ASSISTED BEAM MANAGEMENT

Methods, systems, and devices for wireless communications are described. A first device may receive a first message indicating location information of a second device. The first device may obtain map information corresponding to a geographic area associated with the location information. The first device may perform a beam sweeping procedure to determine beams to be used for communication with the second device. The first device may communicate with the second device using the determined beams. Additionally, or alternatively, a first device may receive a first message including intersection information that includes beam information associated with the intersection. The first device may perform, with a second device, a beam sweeping procedure to determine, based on the intersection information, beams to be used for communication with the second device. The first device may communicate with the second device using the determined beams.

FIELD OF TECHNOLOGY

The following relates to wireless communications, including assisted beam management.

BACKGROUND

In some wireless communications systems, a wireless device may perform a beam sweeping procedure. However, such approaches may be improved.

SUMMARY

The described techniques relate to improved methods, systems, devices, and apparatuses that support assisted beam management. For example, a first wireless device may receive, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device. The first wireless device may obtain map information corresponding to a geographic area associated with the location information. The first wireless device may perform, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a plurality of available beams to determine, based at least in part on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The first wireless device may communicate, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

Additionally, or alternatively, a first wireless device may receive, over a first frequency band, a first vehicle safety message including intersection information associated with an intersection comprising a plurality of lanes, where the intersection information includes beam direction information associated with a subset of the plurality of lanes. The first wireless device may perform, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a plurality of available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The first wireless device may communicate, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

A method for wireless communications by a first wireless device is described. The method may include receiving, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device, obtaining map information corresponding to a geographic area associated with the location information, performing, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device, and communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

A first wireless device for wireless communications is described. The first wireless device may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively operable to execute the code to cause the first wireless device to receive, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device, obtain map information corresponding to a geographic area associated with the location information, perform, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device, and communicate, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

Another first wireless device for wireless communications is described. The first wireless device may include means for receiving, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device, means for obtaining map information corresponding to a geographic area associated with the location information, means for performing, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device, and means for communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to receive, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device, obtain map information corresponding to a geographic area associated with the location information, perform, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device, and communicate, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

Some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, over the first frequency band from the second wireless device, a first message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes and where performing the beam sweeping procedure may be based on the intersection information.

Some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving the map information from the second wireless device.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the first wireless device may be an on-board unit (OBU) and the second wireless device may be a network entity co-located with a road-side unit.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the first wireless device may be a first on-board unit (OBU) associated with a first vehicle and the second wireless device may be a second OBU associated with a second vehicle.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the first frequency band may be an intelligent transportation system (ITS) band.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the second frequency band may be a millimeter wave band.

A method for wireless communications by a first wireless device is described. The method may include receiving, over a first frequency band, a first vehicle safety message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes, performing, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device, and communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

A first wireless device for wireless communications is described. The first wireless device may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively operable to execute the code to cause the first wireless device to receive, over a first frequency band, a first vehicle safety message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes, perform, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device, and communicate, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

Another first wireless device for wireless communications is described. The first wireless device may include means for receiving, over a first frequency band, a first vehicle safety message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes, means for performing, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device, and means for communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to receive, over a first frequency band, a first vehicle safety message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes, perform, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device, and communicate, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

Some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, over the first frequency band, a second vehicle safety message indicating location information of the second wireless device, obtaining map information corresponding to a geographic area associated with the location information, and where performing the beam sweeping procedure may be based on the location information and the map information.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the first vehicle safety message may be a signal phase and time message, a map data message, or a road geometry attributes message.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the first vehicle safety message includes a beam quantity parameter indicating a set of multiple beams, a beam azimuth angle parameter for each beam of the set of multiple beams, a beam elevation parameter for each beam of the set of multiple beams, a current beam parameter for the subset of the set of multiple lanes, or any combination thereof.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the current beam parameter may be associated with a lane connection parameter that may be associated with the subset of the set of multiple lanes, where performing the beam sweeping procedure may be based on the current beam parameter.

Some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for performing the beam sweeping procedure based on the subset of the set of multiple lanes corresponding to a first vehicle associated with the first wireless device, where the subset of the set of multiple lanes corresponds to the first subset of beams.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the first vehicle safety message includes a set of multiple identifiers associated with the set of multiple available beams and the one or more beams of the first subset of beams may be determined based on corresponding identifiers of the set of multiple identifiers.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the first wireless device may be an on-board unit (OBU) and the second wireless device may be a network entity co-located with a road-side unit.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the first vehicle safety message indicates a public land mobile network (PLMN) identifier associated with the second wireless device.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the first frequency band may be an intelligent transportation system (ITS) band.

In some examples of the method, first wireless devices, and non-transitory computer-readable medium described herein, the second frequency band may be a millimeter wave band.

DETAILED DESCRIPTION

Wireless communications devices may communicate using mmWave communications that may involve predicting current and future beam indices to be used for communications in both wireless wide area network (WWAN) communications as well as in sidelink communications. Determining narrow beams to be used for communications may involve prohibitively large beam training overhead which consumes compute resources and incurs latency cost. Further, for high mobility applications (e.g., vehicle to everything (V2X) communications), this becomes more challenging since the channel may change rapidly and beam training may be performed more frequently.

In some examples, a first wireless device (e.g., an on-board unit) may communicate with a second wireless device (e.g., a road-side unit (RSU) in a WWAN scenario or another OBU in a sidelink scenario) and may receive location information associated with the first wireless device (e.g., a geo-location, GPS coordinates, a relative position of the first wireless device, or the like) that may be overlayed with map information (e.g., pre-loaded map information, received map information, dynamic map information, or any combination thereof). The first wireless device, the second wireless device, or both, may select one or more beams to be used for a beam sweeping procedure based on the location information and the map information and may exclude one or more beams that may not be effective for communications given the location information and map information. Such a beam sweeping procedure may be performed over an access link, a PC5 link, one or more other communication links, or any combination thereof. The first wireless device and the second wireless device may then perform the beam sweeping procedure over this improved set of beams to select or identify beams to be used for communications.

Additionally, or alternatively, in some examples, the second wireless device may transmit messaging (e.g., a signal phase and time (SPaT), a map data (MAP) message, one or more other messages, or any combination thereof) that may include information associated with a traffic intersection as well as beam information associated with a subset of lanes comprised in or associated with the traffic intersection. The first wireless device, the second wireless device, or both may exclude one or more beams from the available beams based on the beam information included in the messaging and may perform the beam sweeping procedure.

As a result of such augmented beam management, latency (e.g., synchronization latency, connection latency, or beam alignment latency) may be reduced as the beam sweeping procedure may consider fewer beams selected based on the location information (e.g., as compared to a set of beams selected without considering the location information). Further, processing overhead or workload and power consumption may be reduced.

Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are then described with reference to wireless communications systems and process flows. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to assisted beam management.

For instance, an access network (AN) or RAN may include communications between access nodes (e.g., an IAB donor), IAB nodes 104, and one or more UEs 115. The IAB donor may facilitate connection between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130). That is, an IAB donor may refer to a RAN node with a wired or wireless connection to core network 130. The IAB donor may include a CU 160 and at least one DU 165 (e.g., and RU 170), in which case the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link). IAB donor and IAB nodes 104 may communicate via an F1 interface according to a protocol that defines signaling messages (e.g., an F1 AP protocol). Additionally, or alternatively, the CU 160 may communicate with the core network via an interface, which may be an example of a portion of backhaul link, and may communicate with other CUs 160 (e.g., a CU 160 associated with an alternative IAB donor) via an Xn-C interface, which may be an example of a portion of a backhaul link.

An IAB node 104 may refer to a RAN node that provides IAB functionality (e.g., access for UEs 115, wireless self-backhauling capabilities). A DU 165 may act as a distributed scheduling node towards child nodes associated with the IAB node 104, and the IAB-MT may act as a scheduled node towards parent nodes associated with the IAB node 104. That is, an IAB donor may be referred to as a parent node in communication with one or more child nodes (e.g., an IAB donor may relay transmissions for UEs through one or more other IAB nodes 104). Additionally, or alternatively, an IAB node 104 may also be referred to as a parent node or a child node to other IAB nodes 104, depending on the relay chain or configuration of the AN. Therefore, the IAB-MT entity of IAB nodes 104 may provide a Uu interface for a child IAB node 104 to receive signaling from a parent IAB node 104, and the DU interface (e.g., DUs 165) may provide a Uu interface for a parent IAB node 104 to signal to a child IAB node 104 or UE 115.

For example, IAB node 104 may be referred to as a parent node that supports communications for a child IAB node, or referred to as a child IAB node associated with an IAB donor, or both. The IAB donor may include a CU 160 with a wired or wireless connection (e.g., a backhaul communication link 120) to the core network 130 and may act as parent node to IAB nodes 104. For example, the DU 165 of IAB donor may relay transmissions to UEs 115 through IAB nodes 104, or may directly signal transmissions to a UE 115, or both. The CU 160 of IAB donor may signal communication link establishment via an F1 interface to IAB nodes 104, and the IAB nodes 104 may schedule transmissions (e.g., transmissions to the UEs 115 relayed from the IAB donor) through the DUs 165. That is, data may be relayed to and from IAB nodes 104 via signaling via an NR Uu interface to MT of the IAB node 104. Communications with IAB node 104 may be scheduled by a DU 165 of IAB donor and communications with IAB node 104 may be scheduled by DU 165 of IAB node 104.

A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell. A small cell may be associated with a lower-powered network entity 105 (e.g., a lower-powered base station 140), as compared with a macro cell, and a small cell may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG), the UEs 115 associated with users in a home or office). A network entity 105 may support one or multiple cells and may also support communications via the one or more cells using one or multiple component carriers.

The wireless communications system 100 may support synchronous or asynchronous operation. For synchronous operation, network entities 105 (e.g., base stations 140) may have similar frame timings, and transmissions from different network entities 105 may be approximately aligned in time. For asynchronous operation, network entities 105 may have different frame timings, and transmissions from different network entities 105 may, in some examples, not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operations.

Some signals, such as data signals associated with a particular receiving device, may be transmitted by transmitting device (e.g., a transmitting network entity 105, a transmitting UE 115) along a single beam direction (e.g., a direction associated with the receiving device, such as a receiving network entity 105 or a receiving UE 115). In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted along one or more beam directions. For example, a UE 115 may receive one or more of the signals transmitted by the network entity 105 along different directions and may report to the network entity 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.

The wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. An RLC layer may perform packet segmentation and reassembly to communicate via logical channels. A MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer also may implement error detection techniques, error correction techniques, or both to support retransmissions to improve link efficiency. In the control plane, an RRC layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a network entity 105 or a core network 130 supporting radio bearers for user plane data. A PHY layer may map transport channels to physical channels.

For example, a wireless device (e.g., an OBU or a UE) may receive location information and may overlay map information with the location information to aid in performing a beam sweeping procedure (e.g., to reduce a quantity of beams that are to be swept during the beam sweeping procedure). Additionally, or alternatively, a wireless device may receive intersection information (e.g., in a SPAT message or MAP message) that may include beam information (e.g., beam direction information or other information about one or more beams associated with the intersection) that may aid in performing a beam sweeping procedure (e.g., to reduce a quantity of beams that are to be swept during the beam sweeping procedure).

FIG. 2 shows an example of a wireless communications system 200 that supports assisted beam management in accordance with one or more aspects of the present disclosure.

In WWAN communications (e.g., involving mm Wave communications), wireless devices may predict the current and future beam indexes to be used for communications. However, determining beams to use for communications may involve prohibitively large beam training overhead which consumes compute resources and incurs latency cost. Further, for high mobility applications, beam prediction or management may involve additional challenges due to the channel rapidly changing and more frequently performed beam training.

Some approaches use sensing information of the environment (e.g., through camera, LiDAR, or other environmental sensing) to reduce the training overhead. For example, a wireless device may predict one or more beams using sensory input from same time step or may predict one or more future beams using sensory input from previous time steps.

However, such approaches may be improved by utilizing location information in vehicle safety messages (e.g., vehicle to vehicle (V2V) messages or vehicle to infrastructure (V2I) messages) exchanged between one or more OBUs, one or more RSUs, one or more network entities co-located with one or more RSUs, or any combination thereof, to further reduce the training overhead for WWAN beam prediction and tracking. Once such information is obtained and beams are selected or predicted, such obtained beam information may be transmitted to a trailing OBU (or an OBU in any position, such as a position relative to the first wireless device or in a position next to the first wireless device) to further reduce overhead for that OBU as well.

For example, the RSU 220 that is co-located with the network entity 105-a may communicate with the first OBU 210, which may be associated with a vehicle. In some examples, such communications may be performed over a first channel 235, which may be associated with an ITS band. Such communications may aid in facilitating beam management for communications between the OBU 210 and the network entity 105-a. In some examples, the various wireless devices (e.g., the first OBU 210, the second OBU 215, the RSU 220, the network entity 105-a, or any combination thereof) may include multiple antenna elements or arrays to communicate via different bands, such as an ITS band (e.g., with which the first channel 235 may be associated) and a mmWave band (e.g., with which the second channel 240 may be associated).

In some examples, the first OBU 210 may receive (e.g., from the RSU 220 over the first channel 235 which may be associated with an ITS band, such as a 5.9 GHZ band) a first vehicle safety message 255 (e.g., a V2I or I2V message) that may include location information 280 associated with the RSU 220, the co-located network entity 105-a, or both). The location information 280 included may allow for more efficient beam management for communications over the second channel 240 (e.g., which may be associated with a mmWave band or FR2 band).

For example, the first OBU 210 and the network entity 105-a may perform a beam sweeping procedure that may be based on the location information received over the first channel 235 in the first vehicle safety message. The first OBU 210 and the network entity 105-a may employ beam sweeps including beams (e.g., the beams 225, the beams 230, or both) that are oriented towards one or more locations indicated in the location information 280 (e.g., only a subset of available beams of the first OBU 210 are used in a beam sweeping procedure, where beams in the beam subset are oriented in the direction of the location information 280, and other beams of the available beams are excluded from the beam sweeping procedure). The beam subset may include beams occurring within one or more sectors of a sphere, or within an azimuth range corresponding to the location information 280, or with an elevation range corresponding to the location information 280, and may exclude other available beams. For example, beams pointed in a different direction, such as beams 285 of the first OBU 210, may be excluded from the beam sweeping procedure. The network entity 105-a and the OBU 215 may similarly have one or more beams pointed in directions that are oriented away from a desired direction, and may also be excluded from the beam sweeping procedure. As part of the beam sweeping procedure, the beams 225 and the beams 230 may be swept individually to determine which beams of the beams 225 and the beams 230 are to be used for communications between the first OBU 210 and the network entity 105-a (e.g., for communicating the one or more first messages 260).

The use of such location information 280 during an initial access procedure may reduce synchronization and connection latency as well as processor workload. Further, power consumption may be reduced at one or more of the devices (e.g., OBUs, RSUs, network entities, a small cell RSU/gNB, or any combination thereof).

Further, the first OBU 210 may transmit path prediction information to the network entity 105-a or the RSU 220, optionally in a basic safety message (BSM). Such path prediction information may include one or more predicted positions of the first OBU 210 or an associated vehicle at one or more points in time. The network entity 105-a may use the path prediction information for finer beam tracking, such as by refining the beam sweeping procedure (e.g., by selecting one or more beams that may correspond to the prediction information or positions indicated therein).

In some examples, the first OBU 210 may be associated with an autonomous vehicle. In such examples, the autonomous vehicle or first OBU 210 may transmit a path trajectory to the network entity 105-a to similarly improve the beam sweeping procedure (e.g., by allowing the network entity 105-a to select beams for the beam sweeping procedure that correspond to the path trajectory transmitted by the first OBU 210).

In some examples, the network entity 105-a may transmit an indication of a future beam selection 275 of the beams 225, the beams 230, or both, that are associated with one or more future points in time. The first OBU 210 may use the information of the beam selection 275 to further reduce the complexity of the beam sweeping procedure (e.g., by reducing the pool of beams that are to be swept in the beam sweeping procedure) and allow for better beam tracking.

In some examples, the first OBU 210 may transmit (e.g., over the third channel 245, which may be associated with a mmWave band) a sensor data sharing message (SDSM) or a collective perception message (CPM), such as the SDSM/CPM 265 (which may be either an SDSM or a CPM) to the second OBU 215 that may be associated with a second vehicle (e.g., a trailing vehicle or a vehicle in any position, such as a position relative to the first OBU 210 or in a position next to the first wireless device). In some examples, instead of an SDSM or CPM, the first OBU 210 may transmit another type of signaling or messaging that may perform similar functions or carry similar information described herein in relation to the SDSM or CPM. Additionally, or alternatively, the first OBU 210 may transmit information associated with the network entity 105-a, such as a quantity of beams, a geo-location, one or more services provided by the network entity 105-a, other information associated with the network entity 105-a, or any combination thereof. Further, the SDSM/CPM 265 may also include information associated with the first OBU 210, such as a location of the first OBU 210. Use of SDSM/CPM may be beneficial if RSU 220 is collocated with the network entity 105-a where the network entity 105-a is not transmitting I2V messages that include location information of the network entity 105-a. In some examples, a trailing vehicle may adjust its driving path accordingly (e.g., to end up in a good coverage zone for the network entity 105-a).

The second OBU 215 may use the information in the SDSM/CPM 265 to more efficiently select beams for and perform the beam sweeping procedure. For example, the second OBU 215 may select one or more beams (e.g., of the beams 250, the beams 230, or both) that may correspond with the location of the network entity 105-a or that correspond with the beams determined through the beam sweeping procedure between the first OBU 210 and the network entity 105-a (e.g., one or more of the beams 230). In this way, the second OBU 215 may perform its own beam sweeping procedure with the network entity 105-a with reduced synchronization and connection latency, processor workload, and power consumption. The second OBU 215 may then communicate the one or more second message 270 with the network entity 105-a using the one or more beams (e.g., that were selected or determined) as a result of the beam sweeping procedure between the second OBU 215 and the network entity 105-a.

Such use of the SDSM/CPM 265 may be particularly useful in situations in which the RSU 220 that is co-located with the network entity 105-a is not transmitting the first vehicle safety message 255 or is no including the location information 280 in the first vehicle safety message 255. Thus, even if the first OBU 210 does not use the location information 280 during its beam sweeping procedure with the network entity 105-a, the second OBU 215 may utilize the results (e.g., a beam selection) of the beam sweeping procedure between the first OBU 210 and the network entity 105-a to reduce latency, overhead, and power consumption during the beam sweeping procedure between the second OBU 215 and the network entity 105-a.

In some examples, the second vehicle associated with the second OBU 215 may alter a driving path based on the SDSM/CPM 265. For example, the second vehicle may adjust its driving path to better travel through a coverage zone of the network entity 105-a, thereby improving the beam sweeping procedure between the second OBU 215 and the network entity 105-a, as well as the communications performed using the beams determined or selected during the beam sweeping procedure (e.g., communicating the one or more second messages 270).

In some examples, an SDSM, CPM, or other signaling may include source data, detected object data or both. In some examples, the SDSM/CPM 265 may include information or parameters in the host data, such as the following example sensor sharing message that may include the MmWave parameter. This parameter or sequence, one or more other parameters or sequences, or both may indicate the information associated with the network entity 105-a, such as a quantity of beams, a location, one or more services provided by the network entity 105-a, other information associated with the network entity 105-a, or any combination thereof.

In some examples, the MmWaveData parameter or sequence may include information such as the information included in the following example MmWaveData parameter or sequence.

Array of beams   beamNum OPTIONAL,

Array loc_correspond_beam_locBeam OPTIONAL

Further, the SDSM/CPM 265 or other signaling may further include information or parameters in the detected object data (e.g., for one or more detected or perceived objects), such as the following example DetetectedObjectList that may include DetectedObjectData for detected object. Such DetectedObjectData instances may include the DetMmWave parameter. This parameter or sequence, one or more other parameters or sequences, or both may indicate the information associated with the network entity 105-a, such as a quantity of beams, a location, one or more services provided by the network entity 105-a, other information associated with the network entity 105-a, or any combination thereof.

detObjCommon DetectedObjectCommonData, -- Common data for detected

object

In some examples, the detMmWave parameter or sequence may include information such as the information included in the following example detMmWave parameter or sequence.

Array of beams   beamNum OPTIONAL,

In some examples, the first OBU 210, the network entity 105-a, the second OBU 215, or any combination thereof, may obtain map information 290 that may correspond to or be associated with the location information 280, a location of the first OBU 210, a location of the RSU 220, a location of the network entity 105-a, the second OBU 215, or any combination thereof. In some examples, the map information 290 may be independent from location information (e.g., the location information 280). The first OBU 210, the network entity 105-a, the second OBU 215, or any combination thereof, may overlay the map information 290 and the location information 280 (or other location information as described herein) and may perform a beam sweeping procedure using one or more beams (e.g., the beams 225, the beams 230, or the beams 250) that may be selected for the beam sweeping procedure based at least in part on the map information 290, the location information 280, other location information described herein, or any combination thereof. The use of the map information 290 may apply to a beam sweeping procedure between the first OBU 210 and the network entity 105-a, a beam sweeping procedure between the second OBU 215 and the network entity 105-a, or any combination thereof.

In some examples, the map information 290 may be pre-loaded, obtained over a wireless communications network, or any combination thereof. For example, a coarse or less-detailed version of the map information 290 may be pre-loaded at a device and finer map details may be downloaded over a wireless communications network (e.g., based on a location of such a device). Further, in some examples, the entirety may be map information 290 may be downloaded over a wireless communications network.

The use of such map information 290 may aid the first OBU 210, the second OBU 215, the network entity 105-a, or any combination thereof, to improve upon the location information 280 or other location information. For example, a location of the RSU 220 or the first OBU 210 may be more precisely calculated or obtained (e.g., a lane position or location may be determined more precisely). In some examples, obstacles, road trajectories, geographic features, buildings, or other environmental conditions or objects may be determined based on the map information 290 and the beam sweeping process may be adjusted accordingly (e.g., through selection of one or more beams to be used for the beam sweeping process based on the map information 290).

FIG. 3 shows an example of a wireless communications system 300 that supports assisted beam management in accordance with one or more aspects of the present disclosure.

Just as a beam sweeping procedures between an OBU and a network entity 105-a may be improved, so may beam sweeping procedures between multiple OBUs communicating in sidelink be improved. For example, in sidelink communications (e.g., including sidelink mmWave communications), wireless devices may predict the current and future beam indexes to be used for communications. However, determining narrow beams may involve prohibitively large beam training overhead which consumes compute resources and incurs latency cost. Further, for high mobility applications, beam prediction or management may involve additional challenges due to the channel rapidly changing and more frequently performed beam training.

Some approaches (e.g., for stationary cases) use sensing information of the environment (e.g., through camera, LiDAR, or other environmental sensing) to reduce the training overhead. For example, a wireless device may predict one or more beams using sensory input from a same or current time or may predict one or more future beams using sensory input from previous time steps. However, such approaches may be improved by utilizing location information and beam management information in SSB communications (or in other signaling) and MSCMs exchanged between OBUs to reduce the training overhead for sidelink beam prediction and tracking. For example, OBUs may communicate via a unicast session in sidelink unlicensed mmWave communications for applications such as raw sensor sharing with first antennas and hardware and may further transmit vehicle safety messages (e.g., such as BSMs) using an ITS band with second antenna or hardware.

For example, in order to set up a unicast sidelink session, the first OBU 310 and the second OBU 315 may align their beams in a beam sweeping procedure, optionally involving sidelink SSB communications or any other type of signaling that may be compatible with a beam sweeping procedure. For example, other types of sensing may be used. Though examples included herein may describe types of signaling, other types of signaling may also be used (e.g., types of RF sensing signaling) with the same or similar techniques. These techniques may also be used to set up a unicast sidelink session between OBU-RSUs. Such operations may transmit beam sweeping, but this may involve additional latency as compared to WWAN situations due to differences in periodicities. For example, in sidelink, transmit beam sweeping of 64 beams may have a duration of at least 8 ms (e.g., for an S-SSB burst). Since an S-SSB burst has a periodicity of 160 ms, assuming just 8 beams on the receiving side, the whole beam sweeping procedure may have a duration of more than 1.28 seconds. Such a latency is higher than a beam alignment latency in WWAN (e.g., where SSB bursts may have a periodicity of 20 ms). Given this increase in latency, including location information (e.g., geolocation information, relative positioning information, or other location information) in vehicle safety messages (e.g., BSMs) or other messages may aid in significant reductions in latency, overhead, and power consumption.

In some examples, OBUs may transmit such vehicle safety messages (e.g., BSMs) at different rates (e.g., 10 Hz or lower depending on congestion level). As such, the location information 395 included in the first vehicle safety message 355 may be used to adjust beams 325, beams 330, or both during initial alignment and session setup and as well as during tracking operations. In some examples, sidelink positioning information or procedure may be used to augment the accuracy of the location information 395. Such sidelink positioning information may be applicable in OBU to OBU communications or in OBU to RSU communications in which the RSU has an accurate understanding of its own true location.

For example, the second OBU 315 may transmit the first vehicle safety message 355 (e.g., which may be a BSM) to the second OBU 310 over the first channel 335 (which may be associated with an ITS band). The first vehicle safety message 355 may include the location information 395 that may be associated with the second OBU 315. Such location information 395 may indicate one or more positions of the second OBU 315, past, present, or future. The first OBU 310 and the second OBU 315 may perform a beam sweeping procedure (e.g., over the second channel 340, which may be associated with a mmWave band) to select or determine one or more beams (e.g., of the beams 325, beams 330, or both) to be used for communications (e.g., for communicating the one or more first messages 360 over the second channel 340).

In some examples, the location information 395 may be used to select or determine (or, alternatively, exclude) one or more beams from a pool of candidate beams that will be used for performing the beam sweeping procedure. For example, some beams of the beams 325, the beams 330, or both, may be oriented in a direction or towards a location corresponding with the location information 395 and may be included in the beam sweeping procedure. Other beams, however, may be excluded from the beam sweeping procedure if they are not at least partially oriented in a direction or towards a location corresponding with the location information 395.

In some examples, the first OBU 310 and the second OBU 315 may engage in a mmWave unicast session (e.g., for raw sensor sharing) as they exchange the MSCMs 365 to coordinate a maneuver 370 such as a lane change. The maneuver 370 may include one or more positions (designated by P1, P2, . . . Pn) in which the first vehicle may be located at point during the maneuver.

As part of the maneuver coordination process, the first OBU 310 and the second OBU 315 may exchange MSCMs 365 of various types (e.g., including those depicted in FIG. 3) that may be (e.g., either individually or collectively) unicast messages, groupcast messages, or broadcast messages. For example, the first OBU 310 may transmit a first MSCM 365 to the second OBU 315 that may be a maneuver request message (e.g., a Type 1 MSCM). The maneuver request message may include information such as a maneuver start and end time, min and max speed, and target road resource (TRR). Other MSCM types may include a Maneuver Intent (mSCMType=0), a Maneuver Request (mSCMType=1), a Maneuver Response (mSCMType=2), a Maneuver Reservation (mSCMType=3), an HV (e.g., leading vehicle) Maneuver Cancellation (mSCMType=4), an RV (e.g., trailing vehicle or a vehicle in any position, such as a position relative to an OBU or other wireless device associated with a vehicle or in a position next to the OBU or other wireless device associated with a vehicle) Maneuver Cancellation Request (mSCMType=5), Emergency Maneuver Reservation (mSCMType=6), and Maneuver Execution Status (mSCMType=7).

However, in some examples, the maneuver coordination process using MSCMs 365 may be improved by including additional types of MSCMs 365 that may include a beam management request (MSCM Type=8), a beam management response (MSCM Type=9), or both.

For example, the first OBU 310 may transmit a beam management request MSCM (e.g., a Type 8 MSCM) to initiate a beam management session with one or more particular OBUs or vehicles (e.g., the second OBU 315 associated with the second vehicle) determined by one or more destinationIDs that may be included in the beam management request MSCM. The beam management request MSCM may also include additional information about the maneuver to be performed that may not have been included in the maneuver request, such as such as midway positions P1 and P2 with corresponding time instances). In some examples, a data field may be included in the maneuver request message to indicate OBUs or vehicles to which beam management is to be performed.

The second OBU 315 may use the information about the first OBU's 310 maneuver into account and calculate relevant beams (e.g., beams B1, B2, . . . Bn) during its maneuver course until landing at the TRR. The second OBU 315 may transmit a beam management response MSCM (e.g., a Type 9 MSCM) to the first OBU 310 that may include the relevant calculated beams to be used during the maneuver. The beam management response MSCM may indicate a correlation between the positions (e.g., P1, P2, . . . Pn) and the beams (B1, B2, . . . Bn) and may be a unicast, groupcast, or broadcast message. In some examples, angular coverage of each beam (e.g., in azimuth and elevation) may also be conveyed in the beam management response MSCM.

In some examples, the first OBU 310, the second OBU 315, or any combination thereof, may obtain map information 398 that may correspond to or be associated with the location information 395, a location of the first OBU 310, the second OBU 315, or any combination thereof. In some examples, the map information 398 may be independent from location information (e.g., the location information 395). The first OBU 310, the second OBU 315, or any combination thereof, may overlay the map information 398 and the location information 395 (or other location information as described herein) and may perform a beam sweeping procedure using one or more beams (e.g., the beams 225, the beams 230, or the beams 250) that may be selected for the beam sweeping procedure based at least in part on the map information 398, the location information 395, other location information described herein, or any combination thereof. The use of the map information 398 may apply to a beam sweeping procedure between the first OBU 310 and the network entity 105-a, a beam sweeping procedure between the second OBU 315 and the network entity 105-a, or any combination thereof.

In some examples, the map information 398 may be pre-loaded, obtained over a wireless communications network, or any combination thereof. For example, a coarse or less-detailed version of the map information 398 may be pre-loaded at a device and finer map details may be downloaded over a wireless communications network (e.g., based on a location of such a device). Further, in some examples, the entirety may be map information 398 may be downloaded over a wireless communications network.

The use of such map information 398 may aid the first OBU 310, the second OBU 315, the network entity 105-a, or any combination thereof, to improve upon the location information 395 or other location information. For example, a location of the first OBU 310 or the second OBU 315 may be more precisely calculated or obtained (e.g., a lane position or location may be determined more precisely). In some examples, obstacles, road trajectories, geographic features, buildings, or other environmental conditions or objects may be determined based on the map information 398 and the beam sweeping process may be adjusted accordingly (e.g., through selection of one or more beams to be used for the beam sweeping process based on the map information 398).

FIG. 4 shows an example of a process flow 400 that supports assisted beam management in accordance with one or more aspects of the present disclosure.

The process flow 400 may implement various aspects of the present disclosure described herein. The elements described in the process flow 400 (e.g., the first wireless device 405, the second wireless device 410, and the third wireless device 415) may be examples of similarly-named elements described herein.

In some examples described herein, the second wireless device 410 may be an RSU, a network entity, a network entity co-located with an RSU, an OBU, or another wireless device. In some cases, different operations described in the process flow 400 may apply to different examples of the second wireless device 410. For example, as shown in the process flow 400, an example of a second wireless device 410 that is a network entity co-located with an RSU is depicted alongside another example of a second wireless device 410 that is an OBU. In some examples, one or more operations in the process flow 400 may apply to or may be associated with the example of the network entity co-located with the RSU, the example of the OBU, or both. Though some elements and operations are shown as examples, other combinations of elements, operations, or other subject matter disclosed herein are also possible.

In the following description of the process flow 400, the operations between the various entities or elements may be performed in different orders or at different times. Some operations may also be left out of the process flow 400, or other operations may be added. Although the various entities or elements are shown performing the operations of the process flow 400, some aspects of some operations may also be performed by other entities or elements of the process flow 400 or by entities or elements that are not depicted in the process flow, or any combination thereof.

At 420, the first wireless device 405 may receive, over a first frequency band, a first vehicle safety message that may indicate location information of a second wireless device 410. In some examples, the first wireless device is an on-board unit (OBU) and the second wireless device 410 is a network entity co-located with a road-side unit (RSU). In some examples, the first wireless device is a first on-board unit (OBU) and the second wireless device 410 is a second OBU. In some examples, the first frequency band is an intelligent transportation system (ITS) band.

At 425, the first wireless device 405 may transmit, to the second wireless device 410, a predicted path on which the first wireless device is to travel. In some examples, the first subset of beams corresponds to the predicted path and the location information.

At 430, the first wireless device 405 may receive, from the second wireless device 410, an indication of the first subset of beams.

At 435, the first wireless device 405 may perform, with the second wireless device 410 over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a plurality of available beams to determine one or more beams of the first subset of beams to be used for communication with the second wireless device 410, each beam of the first subset of beams being oriented at least partially in a direction corresponding to the location information of the second wireless device 410. In some examples, the beam sweeping procedure may be performed over an access link, a PC5 link, one or more other communication links, or any combination thereof. In some examples, the second frequency band is a millimeter wave band.

At 440, the first wireless device 405 may communicate, over the second frequency band, one or more messages with the second wireless device 410 using the one or more beams of the first subset of beams. In some examples, the first wireless device 405 may communicate over the second frequency band with the second wireless device 410 using the one or more beams of the first subset of beams in a sidelink unicast session.

At 445, the first wireless device 405 may transmit, to a third wireless device 415 associated with a second vehicle, an indication of the one or more beams of the first subset of beams and the first subset of beams corresponds to a location of the first wireless device and the location information and wherein the first subset of beams is identified based on the location of the first wireless device and the location information. In some examples, the first wireless device 405 may transmit the indication of the one or more beams of the first subset of beams via a sensor data sharing message or a collective perception message.

At 450, the first wireless device 405 may transmit, to the third wireless device 415, an indication of a quantity of beams of the one or more beams of the first subset of beams, an indication of one or more beam azimuths associated with the one or more beams of the first subset of beams, an indication of one or more beam elevations associated with the one or more beams of the first subset of beams, an indication of one or more services provided by the second wireless device 410, or any combination thereof.

At 455, the first wireless device 405 may transmit, to the second wireless device 410, a first maneuver sharing and coordination message (MSCM) that may include a beam management session request and maneuver information associated with a maneuver to be performed by a vehicle associated with the first wireless device. In some examples, the first MSCM may indicate one or more wireless devices associated with corresponding vehicles that are requested to participate in the beam sweeping procedure.

At 460, the first wireless device 405 may receive, from the second wireless device 410, a second MSCM that may include an indication of the first subset of beams, the first subset of beams oriented at least partially towards one or more locations associated with the maneuver.

FIG. 5 shows an example of a process flow 500 that supports assisted beam management in accordance with one or more aspects of the present disclosure.

The process flow 500 may implement various aspects of the present disclosure described herein. The elements described in the process flow 500 (e.g., the first wireless device 505 505, the second wireless device 510, and the third wireless device 515) may be examples of similarly-named elements described herein.

In the following description of the process flow 500, the operations between the various entities or elements may be performed in different orders or at different times. Some operations may also be left out of the process flow 500, or other operations may be added. Although the various entities or elements are shown performing the operations of the process flow 500, some aspects of some operations may also be performed by other entities or elements of the process flow 500 or by entities or elements that are not depicted in the process flow, or any combination thereof.

At 520, the second wireless device 510 may transmit, over a first frequency band, a first vehicle safety message that may indicate location information of the second wireless device. In some examples, the first wireless device 505 is an on-board unit (OBU) and the second wireless device is a network entity co-located with a road-side unit (RSU). In some examples, the first frequency band is an intelligent transportation system (ITS) band. In some examples, the second frequency band is a millimeter wave band.

At 525, the second wireless device 510 may receive, from the first wireless device 505, a predicted path on which the first wireless device 505 is to travel and the first subset of beams may correspond to the predicted path and the location information.

At 530, the second wireless device 510 may transmit, to the first wireless device 505, an indication of the first subset of beams.

At 535, the second wireless device 510 may perform, with a first wireless device 505 over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a plurality of available beams to determine one or more beams of the first subset of beams to be used for communication with the first wireless device 505, each beam of the first subset of beams being oriented at least partially in a direction corresponding to the location information of the second wireless device.

At 540, the second wireless device 510 may communicate, over the second frequency band, one or more messages with the first wireless device 505 using the one or more beams of the first subset of beams.

At 545, the second wireless device 510 may perform, with a third wireless device 515 over the second frequency band and based on the one or more beams of the first subset of beams, a second beam sweeping procedure to determine one or more second beams of the first subset of beams to be used for communication with the third wireless device 515 and a location of the third wireless device 515 corresponds to the location information of the second wireless device.

At 550, the second wireless device 510 may communicate, over the second frequency band, one or more second messages with the third wireless device 515 using the one or more second beams.

FIG. 6 shows an example of a wireless communications system 600 that supports assisted beam management in accordance with one or more aspects of the present disclosure.

In some examples, the first wireless device 605 (e.g., an OBU) may communicate with the second wireless device 610. The second wireless device 610 may include an RSU, a network entity, or both. In some examples, the second wireless device 610 may include an RSU and a network entity that are co-located. The first wireless device 605 may be associated with a vehicle that may be traveling near an intersection 650, which may include one or more lanes 655.

In some examples, the first wireless device 605 may receive the first vehicle safety message 620 from the second wireless device 610. In some examples, the first vehicle safety message 620 may be a signal phase and timing (SPaT) message, a TSPaT message, a map data (MAP) message, or a road geometry attributes message. The first vehicle safety message 620 may include intersection information 625 associated with the intersection 650. The intersection information 625 may include information associated with the beams 635, the beams 640, or both, that may be used for a beam sweeping procedure between the first wireless device 605 and the second wireless device 610.

For example, the intersection information 625 may include information associated with the intersection, including an intersection identifier, a reference point, one or more indications of the lanes 655, one or more connections associated with one or more lanes 655, one or more signal groups (e.g., that include or are associated with one or more connections), or any combination thereof. Such information may be included in a MAP message such as the following example MAP message:

Intersection ID, Reference Point

Node Points

Lane N

Connection N

Additionally, or alternatively, the intersection information 625 may include an intersection state for the intersection 650, an intersection identifier associated with the intersection 650, one or more indications of one or more signal groups, a current phase for a signal group, an end time for a current phase for a signal group, one or more upcoming phases for a signal group, or any combination thereof. Such information may be expressed as shown in the following example of a SPAT message:

Intersection State 1

Intersection ID

Signal Group 1

Current Phase

End Time

Next Phase 1

Next Phase N

Signal Group 2

Signal Group 3

Signal Group N

Additionally, or alternatively, the intersection information 625 may include a public land mobile network (PLMN) identifier, beam azimuth information, beam elevation information, current beam information (e.g., a beam used at the second wireless device 610), or any combination thereof. Such information may be associated with an intersection geometry portion of a MAP message, one or more connection portions of a MAP message, or any combination thereof. Additionally, or alternatively, such information may be associated with a signal group indicated or included in a SPaT message. Further, such information may be expressed as in the following examples of mmWave data elements:

Array of beams beamNum OPTIONAL,

In some examples, the intersection information 625 may be static, semi-static, or dynamic. For example, in some situations or intersections 650, a direction of traffic or other characteristic of the intersection may be different at different times of day or based on other factors. In some examples, the second wireless device 610 (e.g., the network entity of the second wireless device 610) may include a capability for antenna steering, which may be used to adjust an amount of wireless coverage or bandwidth to one or more lanes 655 of the intersection 650. In some examples, beam widths of the beams 635, the beams 640, or both, may be adjusted based on different traffic conditions.

Thus, the second wireless device 610 may indicate one or more beams, beam direction information, beam exclusion information, or any combination thereof to the first wireless device 605 and other wireless devices. Such information may be applicable to one or more lanes 655 of the intersection. For example, first beam information may be applicable for devices associated with a first set of lanes (e.g., of the lanes 655) whereas second beam information (e.g., different than the first beam information) may be applicable to devices associated with a second set of lanes (e.g., of the lanes 655). A set of lanes may include one or more ingress lanes, one or more egress lanes, or any combination thereof.

After or in response to performing the beam sweeping procedure, the first wireless device 605 and the second wireless device 610 may communicate one or more messages 630 using one or more beams determined or selected though the beam sweeping procedure.

FIG. 7 shows an example of a process flow 700 that supports assisted beam management in accordance with one or more aspects of the present disclosure.

The process flow 700 may implement various aspects of the present disclosure described herein. The elements described in the process flow 700 (e.g., the first wireless device 705 and the second wireless device 710) may be examples of similarly named elements described herein.

In the following description of the process flow 700, the operations between the various entities or elements may be performed in different orders or at different times. Some operations may also be left out of the process flow 700, or other operations may be added. Although the various entities or elements are shown performing the operations of the process flow 700, some aspects of some operations may also be performed by other entities or elements of the process flow 700 or by entities or elements that are not depicted in the process flow, or any combination thereof.

At 720, the first wireless device 705 may receive, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device. In some examples, the first wireless device is an on-board unit (OBU) and the second wireless device 710 is a network entity co-located with a road-side unit. In some examples, the first wireless device is a first on-board unit (OBU) associated with a first vehicle and the second wireless device 710 is a second OBU associated with a second vehicle. In some examples, the first frequency band is an intelligent transportation system (ITS) band.

At 725, the first wireless device 705 may receive, over the first frequency band from the second wireless device, a first message that may include intersection information associated with an intersection that may include a plurality of lanes and the intersection information may include beam direction information associated with a subset of the plurality of lanes.

At 730, the first wireless device 705 may obtain map information corresponding to a geographic area associated with the location information. In some examples, the first wireless device 705 may receive the map information from the second wireless device.

At 735, the first wireless device 705 may perform, with the second wireless device 710 over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a plurality of available beams to determine, based on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device. In some examples, performing the beam sweeping procedure is based on the intersection information. In some examples, the second frequency band is a millimeter wave band.

At 740, the first wireless device 705 may communicate, over the second frequency band, one or more messages with the second wireless device 710 using the one or more beams of the first subset of beams.

FIG. 8 shows an example of a process flow 800 that supports assisted beam management in accordance with one or more aspects of the present disclosure.

The process flow 800 may implement various aspects of the present disclosure described herein. The elements described in the process flow 800 (e.g., the first wireless device 805 and the second wireless device 810) may be examples of similarly named elements described herein.

In the following description of the process flow 800, the operations between the various entities or elements may be performed in different orders or at different times. Some operations may also be left out of the process flow 800, or other operations may be added. Although the various entities or elements are shown performing the operations of the process flow 800, some aspects of some operations may also be performed by other entities or elements of the process flow 800 or by entities or elements that are not depicted in the process flow, or any combination thereof.

At 820, the first wireless device 805 may receive, over a first frequency band, a first vehicle safety message that may include intersection information associated with an intersection that may include a plurality of lanes and the intersection information may include beam direction information associated with a subset of the plurality of lanes. In some examples, the first vehicle safety message is a signal phase and time message, a map data message, or a road geometry attributes message. In some examples, the first vehicle safety message may include a beam quantity parameter indicating a plurality of beams, a beam azimuth angle parameter for each beam of the plurality of beams, a beam elevation parameter for each beam of the plurality of beams, a current beam parameter for the subset of the plurality of lanes, or any combination thereof. In some examples, the current beam parameter is associated with a lane connection parameter that is associated with the subset of the plurality of lanes. In some examples,

the first vehicle safety message may include a plurality of identifiers associated with the plurality of available beams. In some examples, the first wireless device is an on-board unit (OBU) and the second wireless device 810 is a network entity co-located with a road-side unit. In some examples, the first vehicle safety message indicates a public land mobile network (PLMN) identifier associated with the second wireless device. In some examples, the first frequency band is an intelligent transportation system (ITS) band.

At 825, the first wireless device 805 may receive, over the first frequency band, a second vehicle safety message indicating location information of the second wireless device.

At 830, the first wireless device 805 may obtain map information corresponding to a geographic area associated with the location information.

At 835, the first wireless device 805 may perform, with a second wireless device 810 over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a plurality of available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device. In some examples, performing the beam sweeping procedure is based on the location information and the map information. In some examples, the first wireless device 805 may perform the beam sweeping procedure based on the subset of the plurality of lanes corresponding to a first vehicle associated with the first wireless device and the subset of the plurality of lanes corresponds to the first subset of beams. In some examples, performing the beam sweeping procedure is based on the current beam parameter. In some examples,

the one or more beams of the first subset of beams are determined based on corresponding identifiers of the plurality of identifiers. In some examples, the second frequency band is a millimeter wave band.

At 840, the first wireless device 805 may communicate, over the second frequency band, one or more messages with the second wireless device 810 using the one or more beams of the first subset of beams.

FIG. 9 shows a block diagram 900 of a device 905 that supports assisted beam management in accordance with one or more aspects of the present disclosure. The device 905 may be an example of aspects of a UE 115 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communications manager 920. The device 905, or one or more components of the device 905 (e.g., the receiver 910, the transmitter 915, and the communications manager 920), may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses).

The transmitter 915 may provide a means for transmitting signals generated by other components of the device 905. For example, the transmitter 915 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to assisted beam management). In some examples, the transmitter 915 may be co-located with a receiver 910 in a transceiver module. The transmitter 915 may utilize a single antenna or a set of multiple antennas.

The communications manager 920, the receiver 910, the transmitter 915, or various combinations thereof or various components thereof may be examples of means for performing various aspects of assisted beam management as described herein. For example, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be capable of performing one or more of the functions described herein.

In some examples, the communications manager 920 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 910, the transmitter 915, or both. For example, the communications manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated in combination with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.

Additionally, or alternatively, the communications manager 920 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 920 is capable of, configured to, or operable to support a means for receiving, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device. The communications manager 920 is capable of, configured to, or operable to support a means for obtaining map information corresponding to a geographic area associated with the location information. The communications manager 920 is capable of, configured to, or operable to support a means for performing, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The communications manager 920 is capable of, configured to, or operable to support a means for communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

Additionally, or alternatively, the communications manager 920 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 920 is capable of, configured to, or operable to support a means for receiving, over a first frequency band, a first vehicle safety message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes. The communications manager 920 is capable of, configured to, or operable to support a means for performing, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The communications manager 920 is capable of, configured to, or operable to support a means for communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

By including or configuring the communications manager 920 in accordance with examples as described herein, the device 905 (e.g., at least one processor controlling or otherwise coupled with the receiver 910, the transmitter 915, the communications manager 920, or a combination thereof) may support techniques for reduced processing, reduced power consumption, more efficient utilization of communication resources, or any combination thereof.

FIG. 10 shows a block diagram 1000 of a device 1005 that supports assisted beam management in accordance with one or more aspects of the present disclosure. The device 1005 may be an example of aspects of a device 905 or a UE 115 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communications manager 1020. The device 1005, or one or more components of the device 1005 (e.g., the receiver 1010, the transmitter 1015, and the communications manager 1020), may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses).

The receiver 1010 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to assisted beam management). Information may be passed on to other components of the device 1005. The receiver 1010 may utilize a single antenna or a set of multiple antennas.

The transmitter 1015 may provide a means for transmitting signals generated by other components of the device 1005. For example, the transmitter 1015 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to assisted beam management). In some examples, the transmitter 1015 may be co-located with a receiver 1010 in a transceiver module. The transmitter 1015 may utilize a single antenna or a set of multiple antennas.

The device 1005, or various components thereof, may be an example of means for performing various aspects of assisted beam management as described herein. For example, the communications manager 1020 may include a location information component 1025, a map information component 1030, a beam sweeping procedure component 1035, a communication component 1040, an intersection information component 1045, or any combination thereof. The communications manager 1020 may be an example of aspects of a communications manager 920 as described herein. In some examples, the communications manager 1020, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1010, the transmitter 1015, or both. For example, the communications manager 1020 may receive information from the receiver 1010, send information to the transmitter 1015, or be integrated in combination with the receiver 1010, the transmitter 1015, or both to obtain information, output information, or perform various other operations as described herein.

The communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. The location information component 1025 is capable of, configured to, or operable to support a means for receiving, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device. The map information component 1030 is capable of, configured to, or operable to support a means for obtaining map information corresponding to a geographic area associated with the location information. The beam sweeping procedure component 1035 is capable of, configured to, or operable to support a means for performing, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The communication component 1040 is capable of, configured to, or operable to support a means for communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

Additionally, or alternatively, the communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. The intersection information component 1045 is capable of, configured to, or operable to support a means for receiving, over a first frequency band, a first vehicle safety message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes. The beam sweeping procedure component 1035 is capable of, configured to, or operable to support a means for performing, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The communication component 1040 is capable of, configured to, or operable to support a means for communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

FIG. 11 shows a block diagram 1100 of a communications manager 1120 that supports assisted beam management in accordance with one or more aspects of the present disclosure. The communications manager 1120 may be an example of aspects of a communications manager 920, a communications manager 1020, or both, as described herein. The communications manager 1120, or various components thereof, may be an example of means for performing various aspects of assisted beam management as described herein. For example, the communications manager 1120 may include a location information component 1125, a map information component 1130, a beam sweeping procedure component 1135, a communication component 1140, an intersection information component 1145, a beam information component 1150, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories), may communicate, directly or indirectly, with one another (e.g., via one or more buses).

Additionally, or alternatively, the communications manager 1120 may support wireless communications in accordance with examples as disclosed herein. The location information component 1125 is capable of, configured to, or operable to support a means for receiving, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device. The map information component 1130 is capable of, configured to, or operable to support a means for obtaining map information corresponding to a geographic area associated with the location information. The beam sweeping procedure component 1135 is capable of, configured to, or operable to support a means for performing, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The communication component 1140 is capable of, configured to, or operable to support a means for communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

In some examples, the intersection information component 1145 is capable of, configured to, or operable to support a means for receiving, over the first frequency band from the second wireless device, a first message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes. In some examples, the beam sweeping procedure component 1135 is capable of, configured to, or operable to support a means for where performing the beam sweeping procedure is based on the intersection information.

In some examples, the map information component 1130 is capable of, configured to, or operable to support a means for receiving the map information from the second wireless device.

In some examples, the first wireless device is an on-board unit (OBU) and the second wireless device is a network entity co-located with a road-side unit.

In some examples, the first wireless device is a first on-board unit (OBU) associated with a first vehicle and the second wireless device is a second OBU associated with a second vehicle.

In some examples, the first frequency band is an intelligent transportation system (ITS) band.

In some examples, the second frequency band is a millimeter wave band.

Additionally, or alternatively, the communications manager 1120 may support wireless communications in accordance with examples as disclosed herein. The intersection information component 1145 is capable of, configured to, or operable to support a means for receiving, over a first frequency band, a first vehicle safety message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes. In some examples, the beam sweeping procedure component 1135 is capable of, configured to, or operable to support a means for performing, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device. In some examples, the communication component 1140 is capable of, configured to, or operable to support a means for communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

In some examples, the location information component 1125 is capable of, configured to, or operable to support a means for receiving, over the first frequency band, a second vehicle safety message indicating location information of the second wireless device. In some examples, the map information component 1130 is capable of, configured to, or operable to support a means for obtaining map information corresponding to a geographic area associated with the location information. In some examples, the beam sweeping procedure component 1135 is capable of, configured to, or operable to support a means for where performing the beam sweeping procedure is based on the location information and the map information.

In some examples, the first vehicle safety message is a signal phase and time message, a map data message, or a road geometry attributes message.

In some examples, the first vehicle safety message includes a beam quantity parameter indicating a set of multiple beams, a beam azimuth angle parameter for each beam of the set of multiple beams, a beam elevation parameter for each beam of the set of multiple beams, a current beam parameter for the subset of the set of multiple lanes, or any combination thereof.

In some examples, the current beam parameter is associated with a lane connection parameter that is associated with the subset of the set of multiple lanes, where performing the beam sweeping procedure is based on the current beam parameter.

In some examples, the beam sweeping procedure component 1135 is capable of, configured to, or operable to support a means for performing the beam sweeping procedure based on the subset of the set of multiple lanes corresponding to a first vehicle associated with the first wireless device, where the subset of the set of multiple lanes corresponds to the first subset of beams.

In some examples, the first vehicle safety message includes a set of multiple identifiers associated with the set of multiple available beams. In some examples, the one or more beams of the first subset of beams are determined based on corresponding identifiers of the set of multiple identifiers.

In some examples, the first wireless device is an on-board unit (OBU) and the second wireless device is a network entity co-located with a road-side unit.

In some examples, the first vehicle safety message indicates a public land mobile network (PLMN) identifier associated with the second wireless device.

In some examples, the first frequency band is an intelligent transportation system (ITS) band.

In some examples, the second frequency band is a millimeter wave band.

FIG. 12 shows a diagram of a system 1200 including a device 1205 that supports assisted beam management in accordance with one or more aspects of the present disclosure. The device 1205 may be an example of or include the components of a device 905, a device 1005, or a UE 115 as described herein. The device 1205 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 1205 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1220, an input/output (I/O) controller 1210, a transceiver 1215, an antenna 1225, at least one memory 1230, code 1235, and at least one processor 1240. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1245).

The I/O controller 1210 may manage input and output signals for the device 1205. The I/O controller 1210 may also manage peripherals not integrated into the device 1205. In some cases, the I/O controller 1210 may represent a physical connection or port to an external peripheral. In some cases, the I/O controller 1210 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system. Additionally, or alternatively, the I/O controller 1210 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I/O controller 1210 may be implemented as part of one or more processors, such as the at least one processor 1240. In some cases, a user may interact with the device 1205 via the I/O controller 1210 or via hardware components controlled by the I/O controller 1210.

In some cases, the device 1205 may include a single antenna 1225. However, in some other cases, the device 1205 may have more than one antenna 1225, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1215 may communicate bi-directionally, via the one or more antennas 1225, wired, or wireless links as described herein. For example, the transceiver 1215 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1215 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 1225 for transmission, and to demodulate packets received from the one or more antennas 1225. The transceiver 1215, or the transceiver 1215 and one or more antennas 1225, may be an example of a transmitter 915, a transmitter 1015, a receiver 910, a receiver 1010, or any combination thereof or component thereof, as described herein.

The at least one memory 1230 may include random access memory (RAM) and read-only memory (ROM). The at least one memory 1230 may store computer-readable, computer-executable code 1235 including instructions that, when executed by the at least one processor 1240, cause the device 1205 to perform various functions described herein. The code 1235 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1235 may not be directly executable by the at least one processor 1240 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1230 may contain, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.

The at least one processor 1240 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the at least one processor 1240 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 1240. The at least one processor 1240 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 1230) to cause the device 1205 to perform various functions (e.g., functions or tasks supporting assisted beam management). For example, the device 1205 or a component of the device 1205 may include at least one processor 1240 and at least one memory 1230 coupled with or to the at least one processor 1240, the at least one processor 1240 and at least one memory 1230 configured to perform various functions described herein. In some examples, the at least one processor 1240 may include multiple processors and the at least one memory 1230 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein. In some examples, the at least one processor 1240 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1240) and memory circuitry (which may include the at least one memory 1230)), or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 1240 or a processing system including the at least one processor 1240 may be configured to, configurable to, or operable to cause the device 1205 to perform one or more of the functions described herein. Further, as described herein, being “configured to,” being “configurable to,” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code stored in the at least one memory 1230 or otherwise, to perform one or more of the functions described herein.

Additionally, or alternatively, the communications manager 1220 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1220 is capable of, configured to, or operable to support a means for receiving, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device. The communications manager 1220 is capable of, configured to, or operable to support a means for obtaining map information corresponding to a geographic area associated with the location information. The communications manager 1220 is capable of, configured to, or operable to support a means for performing, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The communications manager 1220 is capable of, configured to, or operable to support a means for communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

Additionally, or alternatively, the communications manager 1220 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1220 is capable of, configured to, or operable to support a means for receiving, over a first frequency band, a first vehicle safety message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes. The communications manager 1220 is capable of, configured to, or operable to support a means for performing, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The communications manager 1220 is capable of, configured to, or operable to support a means for communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

By including or configuring the communications manager 1220 in accordance with examples as described herein, the device 1205 may support techniques for improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, improved utilization of processing capability, or any combination thereof.

In some examples, the communications manager 1220 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1215, the one or more antennas 1225, or any combination thereof. Although the communications manager 1220 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1220 may be supported by or performed by the at least one processor 1240, the at least one memory 1230, the code 1235, or any combination thereof. For example, the code 1235 may include instructions executable by the at least one processor 1240 to cause the device 1205 to perform various aspects of assisted beam management as described herein, or the at least one processor 1240 and the at least one memory 1230 may be otherwise configured to, individually or collectively, perform or support such operations.

At 1305, the method may include receiving, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device. The operations of block 1305 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed by a location information component 1125 as described with reference to FIG. 11.

At 1310, the method may include obtaining map information corresponding to a geographic area associated with the location information. The operations of block 1310 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by a map information component 1130 as described with reference to FIG. 11.

At 1315, the method may include performing, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The operations of block 1315 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by a beam sweeping procedure component 1135 as described with reference to FIG. 11.

At 1320, the method may include communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams. The operations of block 1320 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1320 may be performed by a communication component 1140 as described with reference to FIG. 11.

At 1405, the method may include receiving, over a first frequency band, a first vehicle safety message including intersection information associated with an intersection including a set of multiple lanes, where the intersection information includes beam direction information associated with a subset of the set of multiple lanes. The operations of block 1405 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed by an intersection information component 1145 as described with reference to FIG. 11.

At 1410, the method may include performing, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a set of multiple available beams to determine, based on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device. The operations of block 1410 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed by a beam sweeping procedure component 1135 as described with reference to FIG. 11.

At 1415, the method may include communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams. The operations of block 1415 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed by a communication component 1140 as described with reference to FIG. 11.

Aspect 1: A method for wireless communications at a first wireless device, comprising: receiving, over a first frequency band, a first vehicle safety message indicating location information of a second wireless device; obtaining map information corresponding to a geographic area associated with the location information; performing, with the second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a plurality of available beams to determine, based at least in part on the location information and the map information, one or more beams of the first subset of beams to be used for communication with the second wireless device; and communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

Aspect 2: The method of aspect 1, further comprising: receiving, over the first frequency band from the second wireless device, a first message comprising intersection information associated with an intersection comprising a plurality of lanes, wherein the intersection information comprises beam direction information associated with a subset of the plurality of lanes; wherein performing the beam sweeping procedure is based at least in part on the intersection information.

Aspect 3: The method of any of aspects 1 through 2, further comprising: receiving the map information from the second wireless device.

Aspect 4: The method of any of aspects 1 through 3, wherein the first wireless device is an on-board unit (OBU) and the second wireless device is a network entity co-located with a road-side unit.

Aspect 5: The method of any of aspects 1 through 4, wherein the first wireless device is a first on-board unit (OBU) associated with a first vehicle and the second wireless device is a second OBU associated with a second vehicle.

Aspect 6: The method of any of aspects 1 through 5, wherein the first frequency band is an intelligent transportation system (ITS) band.

Aspect 7: The method of any of aspects 1 through 6, wherein the second frequency band is a millimeter wave band.

Aspect 8: A method for wireless communications at a first wireless device, comprising: receiving, over a first frequency band, a first vehicle safety message comprising intersection information associated with an intersection comprising a plurality of lanes, wherein the intersection information comprises beam direction information associated with a subset of the plurality of lanes; performing, with a second wireless device over a second frequency band that differs from the first frequency band, a beam sweeping procedure using a first subset of beams from a plurality of available beams to determine, based at least in part on the intersection information, one or more beams of the first subset of beams to be used for communication with the second wireless device; and communicating, over the second frequency band, one or more messages with the second wireless device using the one or more beams of the first subset of beams.

Aspect 9: The method of aspect 8, further comprising: receiving, over the first frequency band, a second vehicle safety message indicating location information of the second wireless device; and obtaining map information corresponding to a geographic area associated with the location information; wherein performing the beam sweeping procedure is based at least in part on the location information and the map information.

Aspect 10: The method of any of aspects 8 through 9, wherein the first vehicle safety message is a signal phase and time message, a map data message, or a road geometry attributes message.

Aspect 11: The method of any of aspects 8 through 10, wherein the first vehicle safety message comprises a beam quantity parameter indicating a plurality of beams, a beam azimuth angle parameter for each beam of the plurality of beams, a beam elevation parameter for each beam of the plurality of beams, a current beam parameter for the subset of the plurality of lanes, or any combination thereof.

Aspect 12: The method of aspect 11, wherein the current beam parameter is associated with a lane connection parameter that is associated with the subset of the plurality of lanes, wherein performing the beam sweeping procedure is based at least in part on the current beam parameter.

Aspect 13: The method of any of aspects 8 through 12, further comprising: performing the beam sweeping procedure based at least in part on the subset of the plurality of lanes corresponding to a first vehicle associated with the first wireless device, wherein the subset of the plurality of lanes corresponds to the first subset of beams.

Aspect 14: The method of any of aspects 8 through 13, wherein the first vehicle safety message comprises a plurality of identifiers associated with the plurality of available beams; and the one or more beams of the first subset of beams are determined based at least in part on corresponding identifiers of the plurality of identifiers.

Aspect 15: The method of any of aspects 8 through 14, wherein the first wireless device is an on-board unit (OBU) and the second wireless device is a network entity co-located with a road-side unit.

Aspect 16: The method of any of aspects 8 through 15, wherein the first vehicle safety message indicates a public land mobile network (PLMN) identifier associated with the second wireless device.

Aspect 17: The method of any of aspects 8 through 16, wherein the first frequency band is an intelligent transportation system (ITS) band.

Aspect 18: The method of any of aspects 8 through 17, wherein the second frequency band is a millimeter wave band.

Aspect 19: A first wireless device for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the first wireless device to perform a method of any of aspects 1 through 7.

Aspect 20: A first wireless device for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 7.

Aspect 22: A first wireless device for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the first wireless device to perform a method of any of aspects 8 through 18.

Aspect 23: A first wireless device for wireless communications, comprising at least one means for performing a method of any of aspects 8 through 18.