Patent Description:
In some examples, a wireless multiple-access communication system may include a number of base stations, each simultaneously supporting communication for multiple communication devices, otherwise known as user equipment (UEs). In LTE or LTE-A network, a set of one or more base stations may define an eNodeB (eNB). In other examples (e.g., in a next generation or <NUM> network), a wireless multiple access communication system may include a number of distributed units (DUs) (e.g., edge units (EUs), edge nodes (ENs), radio heads (RHs), smart radio heads (SRHs), transmission reception points (TRPs), etc.) in communication with a number of central units (CUs) (e.g., central nodes (CNs), access node controllers (ANCs), etc.), where a set of one or more distributed units, in communication with a central unit, may define an access node (e.g., a new radio base station (NR BS), a new radio node-B (NR NB), a network node, <NUM> NB, eNB, etc.). A base station or DU may communicate with a set of UEs on downlink channels (e.g., for transmissions from a base station or to a UE) and uplink channels (e.g., for transmissions from a UE to a base station or distributed unit).

However, as the demand for mobile broadband access continues to increase, there exists a desire for further improvements in NR technology.

US patent application <CIT> teaches a positioning processing method wherein a positioning server acquires coexistence interference information of a terminal before instructing, according to the coexistence interference information, the terminal to perform measurement on a suitable positioning signal resource.

US patent application <CIT> discloses a positioning beacon establishing a wireless backhaul connection to a communication network and receiving scheduling information for a positioning reference signal from the communication network over the wireless backhaul connection.

International patent application <CIT> discloses techniques for providing differentiated positioning services including a service for basic positioning (for users or devices that have no need for high accuracy positioning) and a service for high accuracy positioning. The service for high accuracy positioning becomes available to a user equipment upon request wherein providing high accuracy positioning may include providing additional PRS reference signals in response to requests for higher accuracy. The network may, for instance, start transmitting additional positioning signals as a response to a request for high(er) positioning accuracy from a wireless device.

International patent application <CIT> discloses methods and systems for providing location service for user equipment devices. A location server function (LSF) may support on demand location requests from a UE.

The present disclosure provides a method for wireless communication by a user equipment according to claim <NUM>, a method for wireless communication by a base station according to claim <NUM>, an apparatus for wireless communication by a user equipment according to claim <NUM>, and an apparatus for wireless communication by a base station according to claim <NUM>. Specific embodiments are subject of the dependent claims.

It is contemplated that elements described in one aspect may be beneficially utilized on other aspects without specific recitation.

NR may support various wireless communication services, such as Enhanced mobile broadband (eMBB) targeting wide bandwidth (e.g. <NUM> beyond), millimeter wave (mmW) targeting high carrier frequency (e.g. <NUM> or beyond), massive MTC (mMTC) targeting non-backward compatible MTC techniques, and/or mission critical targeting ultra-reliable low latency communications (URLLC).

It should be understood that any aspect of the disclosure described herein may be embodied by one or more elements of a claim.

<FIG> illustrates an example wireless network <NUM>, such as a new radio (NR) or <NUM> network, in which aspects of the present disclosure may be performed. For example, as illustrated, a UE <NUM> may be configured to send a request to a BS <NUM> for on-demand positioning reference signals (PRSs). Such a UE <NUM> and BS <NUM> may, for example, be configured to perform operations shown in <FIG> and <FIG>.

As illustrated in <FIG>, the wireless network <NUM> may include a number of BSs <NUM> and other network entities. A BS may be a station that communicates with UEs. Each BS <NUM> may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" can refer to a coverage area of a Node B and/or a Node B subsystem serving this coverage area, depending on the context in which the term is used. In NR systems, the term "cell" and eNB, Node B, <NUM> NB, AP, NR BS, NR BS, or TRP may be interchangeable. In some examples, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile base station. In some examples, the base stations may be interconnected to one another and/or to one or more other base stations or network nodes (not shown) in the wireless network <NUM> through various types of backhaul interfaces such as a direct physical connection, a virtual network, or the like using any suitable transport network.

A network controller <NUM> may be coupled to a set of BSs and provide coordination and control for these BSs. The BSs <NUM> may also communicate with one another, e.g., directly or indirectly via wireless or wireline backhaul.

A UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a Customer Premises Equipment (CPE), a cellular phone, a smart phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or medical equipment, a biometric sensor/device, a wearable device such as a smart watch, smart clothing, smart glasses, a smart wrist band, smart jewelry (e.g., a smart ring, a smart bracelet, etc.), an internet-of-everything (IOT) device, an entertainment device (e.g., a music device, a video device, a satellite radio, etc.), a vehicular component or sensor, a vehicle (e.g. automobile, bicycle, etc), a smart meter/sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium. Some UEs may be considered evolved or machine-type communication (MTC) devices or evolved MTC (eMTC) devices. Some UEs may be considered Internet-of-Things (IoT) devices.

For example, the spacing of the subcarriers may be <NUM> and the minimum resource allocation (called a 'resource block') may be <NUM> subcarriers (or <NUM>). Consequently, the nominal FFT size may be equal to <NUM>, <NUM>, <NUM>, <NUM> or <NUM> for system bandwidth of <NUM>, <NUM>, <NUM>, <NUM> or <NUM> megahertz (MHz), respectively. For example, a subband may cover <NUM> (i.e., <NUM> resource blocks), and there may be <NUM>, <NUM>, <NUM>, <NUM> or <NUM> subbands for system bandwidth of <NUM>, <NUM>, <NUM>, <NUM> or <NUM>, respectively.

NR may utilize OFDM with a CP on the uplink and downlink and include support for half-duplex operation using time division duplex (TDD). A single component carrier bandwidth of <NUM> may be supported. NR resource blocks may span <NUM> sub-carriers with a sub-carrier bandwidth of <NUM> over a <NUM> duration. Each radio frame may consist of <NUM> half frames, each half frame consisting of <NUM> subframes, with a length of <NUM>. Consequently, each subframe may have a length of <NUM>. Each subframe may indicate a link direction (i.e., DL or UL) for data transmission and the link direction for each subframe may be dynamically switched. Each subframe may include DL/UL data as well as DL/UL control data. UL and DL subframes for NR may be as described in more detail below with respect to <FIG> and <FIG>. Alternatively, NR may support a different air interface, other than an OFDM-based. NR networks may include entities such CUs and/or DUs.

As noted above, a RAN may include a CU and DUs. A NR BS (e.g., eNB, <NUM> Node B, Node B, transmission reception point (TRP), access point (AP)) may correspond to one or multiple BSs. NR cells can be configured as access cell (ACells) or data only cells (DCells). For example, the RAN (e.g., a central unit or distributed unit) can configure the cells. DCells may be cells used for carrier aggregation or dual connectivity, but not used for initial access, cell selection/reselection, or handover. In some cases DCells may not transmit synchronization signals-in some case cases DCells may transmit SS. NR BSs may transmit downlink signals to UEs indicating the cell type. Based on the cell type indication, the UE may communicate with the NR BS. For example, the UE may determine NR BSs to consider for cell selection, access, handover, and/or measurement based on the indicated cell type.

<FIG> illustrates example components of the BS <NUM> and UE <NUM> illustrated in <FIG>, which may be used to implement aspects of the present disclosure. As described above, the BS may include a TRP. One or more components of the BS <NUM> and UE <NUM> may be used to practice aspects of the present disclosure. For example, transceivers that includes antennas <NUM>, processors <NUM>, <NUM>, <NUM>, and/or controller/processor <NUM> of the UE <NUM> and/or transceivers that include antennas <NUM>, processors <NUM>, <NUM>, <NUM>, and/or controller/processor <NUM> of the BS <NUM> may be used to perform the operations described herein and illustrated with reference to <FIG> and <FIG>.

At the base station <NUM>, a transmit processor <NUM> may receive data from a data source <NUM> and control information from a controller/processor <NUM>. The control information may be for the Physical Broadcast Channel (PBCH), Physical Control Format Indicator Channel (PCFICH), Physical Hybrid ARQ Indicator Channel (PHICH), Physical Downlink Control Channel (PDCCH), etc. The data may be for the Physical Downlink Shared Channel (PDSCH), etc. The processor <NUM> may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. The processor <NUM> may also generate reference symbols, e.g., for the PSS, SSS, and cell-specific reference signal. For example, the TX MIMO processor <NUM> may perform certain aspects described herein for reference signal (RS) multiplexing. Downlink signals from modulators 432a through 432t may be transmitted using a transceiver, for example, via the antennas 434a through 434t, respectively.

At the UE <NUM>, one or more transceivers that include the antennas 452a through 452r may receive the downlink signals from the base station <NUM> and may provide received signals to the demodulators (DEMODs) 454a through 454r, respectively. For example, MIMO detector <NUM> may provide detected RS transmitted using techniques described herein. According to one or more cases, aspects can include providing the antennas, as well as some Tx/Rx functionalities, such that they reside in distributed units. For example, some Tx/Rx processing can be done in the central unit, while other processing can be done at the distributed units. For example, in accordance with one or more aspects as shown in the diagram, the BS mod/demod <NUM> may be in the distributed units.

The processor <NUM> and/or other processors and modules at the base station <NUM> may perform or direct, e.g., the execution of the functional blocks illustrated in <FIG> and <FIG>, and/or other processes for the techniques described herein. The processor <NUM> and/or other processors and modules at the UE <NUM> may also perform or direct processes for the techniques described herein. The memories <NUM> and <NUM> may store data and program codes for the BS <NUM> and the UE <NUM>, respectively.

The SS may provide the CP length and frame timing. The PBCH carries some basic system information, such as system frame number, subcarrier spacing in SIB1, Msg. <NUM>/<NUM> for initial access and broadcast SI-messages, cell barring information, etc. The SS blocks may be organized into SS bursts to support beam sweeping.

According to aspects, and as will be described in more detail herein, multiple base stations (BSs) (e.g., Node Bs, TRPs, APs) of a wireless network may communicate with a UE. Further, in such communications, multiple Node BSs may be geographically separated from each other as well as the UE. The geographical position of the UE may often be determined in order to provide and improve communications between the base stations and the UE.

Positioning reference signals (PRSs) were introduced in LTE Release <NUM> to assist in determining the location of User Equipment (UE) based on radio access network information. In general, PRS signals may be transmitted within pre-defined bandwidth and according to a set of configuration parameters such as subframe offset, periodicity, and duration. The PRS bandwidth may be configurable on a per-cell basis, where <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, and <NUM> bandwidths are supported. However, regardless of the bandwidth, PRS may be transmitted in the center resource blocks of a given bandwidth. Additionally, in some cases, PRS periodicity may be fixed such that all repetitions of PRS use the same bandwidth.

Further, each cell may apply a different muting pattern (defining times where the cell does not transmit PRS) in an effort to avoid interference with PRS transmitted from other cells. PRS may be transmitted at pre-defined subframes and repeated (e.g., in several consecutive subframes, with each set of subframes referred to as a "positioning occasion"). The sequence transmitted as a PRS may be based on any suitable known sequence. PRS from different cells may be multiplexed in the code domain (e.g., each cell transmitting a different (orthogonal) PRS sequence), in the frequency domain (e.g., at different frequency offsets), and/or in the time domain (e.g., using time based blanking).

As noted above, PRSs may be used in determining the location of UE, for example, based on radio access network information. The process of determining the location of a UE follows three major steps. For example, a UE may first receive PRSs from its serving cell and neighboring cells. Based on the received PRSs, the UE may measure observed time difference of arrival (OTDOA) and report a reference signal time difference (RSTD) measurement to its serving cell. The network may then use the RTSD measurement to calculate the longitude and latitude of the UE.

A specific example of a traditional LTE UE positioning reference signal (RS) scenario is shown in <FIG>. Particularly, <FIG> shows an example subframe configuration for LTE UE positioning RS (PRS). <FIG> shows an example CRS pattern, an example PRS pattern, and example PCFICH, PHICH, and PDCCH patterns.

In this example of LTE UE Positioning RS, a PRS can be broadcast periodically with a PRS periodicity of <NUM>, <NUM>, <NUM>, and/or <NUM>. The PRS may be generated similarly to CRS in this scenario as shown. For example, a seed for a PN sequence generator may depend on a slot index, a symbol index, and a cell ID. Frequency reuse may also be provided by providing, for example, six possible diagonal frequency shift patterns, staggering PRS REs to reduce PRS collision, and by avoiding PRS collision by, for example, setting cell <NUM> to have the identical PRS as cell <NUM>. In this example subframes (<NUM>, <NUM>) and (<NUM>, <NUM>) are considered consecutive subframes. Some features of this LTE UE positioning RS scenario can include no data transmission in RBs comprising PRS for low interference, eNBs being synchronized, as well as PRS muting to improve detectability defined as an ability to detect weak cell transmissions.

In one or more aspects of embodiments described herein, in NR UE positioning, reference signals and physical channels (with the possible exception of synchronization signals, PBCH/MIB, and/or PDSCH carrying MSIB) may be transmitted on-demand or event-triggered. This may have several advantages, for example, for network energy savings, or for improved efficiency of resource utilization, or for lower latency of positioning. In NR UE positioning a UE may use synchronization signals for UE positioning. Currently, periodic PRS transmission takes resources from data scheduling. Accordingly, periodic PRS transmission may be limited to provide more resources for data scheduling. Accordingly, there may be latency caused by having to wait for next instance of PRS. In contrast, with an on-demand embodiment, a request can be made for a burst of PRS 'in between' the broadcast PRS periods.

As shown in <FIG>, curves may be defined in which a measured difference in arrival time of a reference signal (transmitted at the same time) from two base stations (e.g., eNB1 and eNB2 or eNB1 and eNB3) at the same UE is the same. In other words, at any point along such a curve, the difference in time of arrival (TDOA) should be the same. By finding the intersection between three or more such curves (for three or more different pairs of eNBs), a fairly accurate estimate of UE position may be determined.

However, in some cases it may not be guaranteed that the UE may detect arrival times of at least three base stations' transmissions, as shown in <FIG>, to estimate the UE's location. Accordingly, a reference signal and procedures may be introduced to support UE positioning while also providing network energy savings.

For example, to conserve network resources, base stations may be configured to or determine to not automatically transmit positioning reference signals (PRS). Further, to conserve power, it may be desirable that a UE not monitor for PRS all the time. The on-demand PRS procedure presented herein may help conserve network resources and help a UE conserver power.

In accordance with one or more aspects, one or more on-demand positioning procedures for NR may be defined. In some cases, a UE may provide capability information indicating whether or not the UE supports on-demand PRS instead of, or in addition to, broadcast PRS. Such capability information may also indicate whether DL-based UE positioning, UL-based UE positioning, or both DL-based and UL-based positioning is supported.

<FIG> illustrates examples of different types PRS sent in LTE and NR. As shown, LTE PRS can be broadcast using an Omni-directional signal (e.g., in one slot or symbol). In contrast, the NR PRS can be sent using beam-sweeping (e.g., with a different beam used in each slot or symbol). Accordingly, it can be appreciated that in some cases NR PRS overhead resource usage may include a number of symbols and beams, particularly in a millimeter wave range (FR2) where highly direction signals are sent and beam-sweeping may be needed to reach certain users.

As described above, there may be a desire to reduce overhead of broadcast PRS and also reduce latency of positioning acquisition. Such a reduction in latency may be provided with an on-demand NR PRS. A UE initiating on-demand PRS sends a request with an indication of certain (UE-specific) parameters. The parameters help reduce the number of beams used in beam-sweeping and/or may allow for the periodicity to be requested by the UE (e.g., to speed a sweep across beams specified by the UE). Further, in some cases, the UE may also request a de-activation (stop) of the NR PRS further helping reduce overhead usage.

<FIG> illustrates example operations <NUM> for wireless communications by a UE, in accordance with aspects of the present disclosure. For example, operations <NUM> may be performed by a UE <NUM> of <FIG> to request on-demand PRS.

Operations <NUM> begin, at block <NUM>, with the UE transmitting, to one or more base stations, a request to participate in a UE positioning procedure, wherein the request indicates one or more parameters to be used for transmission of positioning reference signals (PRS) as part of the UE positioning procedure. At <NUM>, the UE receives, from the one or more base stations, PRS transmitted in accordance with at least one of the parameters indicated in the request. While the signaling may be sent in response to the request, the UE may have no way to know if the signaling is actually sent in response to the request or not. Further, the UE may not know if the base station actually selected PRS parameters based on the request or based on some other considerations.

<FIG> illustrates example operations <NUM> for wireless communications by a base station (or other network entity), in accordance with aspects of the present disclosure. For example, operations <NUM> may be performed by a base station <NUM> to receive and process an on-demand PRS request from a UE <NUM> performing operations <NUM> of <FIG>.

Operations <NUM> begin, at block <NUM>, with the base station receiving, from a user equipment (UE), a request to participate in a UE positioning procedure, wherein the request indicates one or more parameters to be used for transmission of positioning reference signals (PRS) as part of the UE positioning procedure. At <NUM>, the base station transmits, to the UE, PRS based on one or more of the parameters indicated in response to the request.

In LTE, a UE may transmit a request for location assistance from the network. However, such a request is addressed directly to some network entity (e.g., location server), and not a base station. Further, such a request may not include PRS parameters, although it may include location accuracy information. In some cases, by addressing a request directly to a base station, for example a gNB, the UE may be able reduce some latency associated with communicating with the network entity (e.g., in the core network). Such a gNB may be configured to respond directly by triggering PRS from multiple geographically separate locations, for example, the locations where remote radio heads (RRHs) for that gNB are located (assuming an RRH deployment). Even without an RRH deployment, a gNB may communicate with its neighbors over an X2 or Xn interface and trigger PRS without the need to communicate with any higher layer or deeper network entity.

In some cases, a UE may request on-demand PRS while in a connected mode between a UE and a base station. In such cases, the PRS request by UE may include a number of different parameters. For example, the parameters may include or indicate one or more of a bandwidth (BW) for sending positioning reference signal (PRS) signaling, a periodicity for sending the PRS signaling, a number of symbols per slot for PRS signaling, a number of repeated slots for PRS signaling, or a number of PRS occasions. As noted above, a UE may specify such parameters in an effort to obtain updated positioning faster than regular (relatively infrequent) PRS transmissions may allow. In some cases, a UE may specify one or more parameters in an effort to plan PRS transmissions for a future time.

In some cases, the parameters may include or indicate a comb density of a desired positioning reference signal (PRS) to use for the UE positioning procedure, and/or a quasi-colocation (QCL)/beam-direction to use for the UE positioning procedure as claimed in the appended claims. In some cases, the parameters may include a desired positioning accuracy or a desired application for using results of the UE positioning procedure (for example V2V, e911, etc.).

In some cases, the request from the UE to the base station may be provided via radio resource control (RRC) signaling, a medium access control element (MAC-CE), a scheduling request (SR), or a beam failure recovery request (BFRQ)-type signal. In some cases, the signaling may provide an index into a table with entries corresponding to sets of parameters (e.g., an RRC-configured parameter-combination table). In the case of a MAC-CE, the UE may receive a PUSCH assignment of resources to send the MAC-CE. In some cases, an SR-id may be associated with a parameter-set, which may reduce latency as compared to a MAC-CE based on SR periodicity.

In some cases, a base station in the network may provide a response to a UE PRS on-demand request. This response may be provided in a number of different ways and may provide a number of different functions and/or information to the UE.

For example, receipt of a request by a gNB may implicitly trigger DL PRS for certain application types, for example, for those with more urgency (e.g., V2V or e911). Alternatively, a gNB can provide signaling for configuring or triggering DL PRS via explicit signaling to the UE (e.g., via RRC/MAC-CE/DCI signaling). The signaling may also be included with other DL signaling, such as DCI assigning DL or UL grants.

A BS receiving an on-demand PRS request from a UE may or may not use all of the indicated parameters. In an illustrative example, the BS may decide which parameters to use based on various factors. Such factors may include overall network congestion, already scheduled PRS transmissions to the UE sending the request (or other UEs). In some cases, the BS may modify current parameters for PRS transmissions, based on the parameters (or other information) indicated in the request. For example, during an E911 call, a BS may increase the frequency of PRS transmissions in an effort to improve location estimation of the UE.

Because the BS may effectively pick and choose which of the parameters indicated in a request to use, the response to the request may provide some indication of which parameters are used. For example, a response may refer to parameters in the request, allowing the network response to be provided as a compact signaling (e.g., just a 1bit Ack to indicate PRS will be performed in accordance with parameters the UE provided in the request). In some cases, a UE determines the PRS configuration parameters based on the signaling from the base station and parameters indicated in the UE request. For example, the received signaling may indicate one or more differences between the configuration settings requested by the UE and the actual configuration settings configured by one or more base stations.

In some cases, mechanisms for deactivation of on-demand PRS may also be provided. This deactivation may be provided via a UE request, or in response to UE report based on PRS. In other cases, the deactivation may be provided automatically based on PRS configuration (e.g., on-demand PRS may stop after N PRS occasions), or by gNB signaling which may be provided in RRC, MAC-CE, DCI, and/or possibly together with other DL signaling such as DCI carrying grants.

In some cases, on-demand PRS may be requested via a random access channel (RACH) procedure, while a UE is in an idle mode. For example, a PRS request by UE may be provided via a physical random access channel (PRACH). In such a case, different combinations of PRS parameters may be associated with different PRACH sequences (e.g., as indicated in SIBs). In such cases, the UE signals the combination of PRS parameters it is requesting by selecting a corresponding PRACH sequence.

A number of different network responses to UE on-demand PRS request can be provided. For example, one option may include a SIB update carrying information about a PRS configuration. The PRS may be time-limited and therefore there may be no need to monitor for further SIB update indicating deactivation. In some cases, the network response may be heard by all UEs, not just the requesting one. In such a case, broadcast reception of the network response may help save the need to transmit further signaling such as, for example a random access response (RAR) or other responses. This broadcast reception option may be preferable for lower priority requests. For example, a gNB may decide to grant the request and begin PRS transmission depending on the number of such PRS requests it receives. In accordance with another option, the network response may include RAR indicating PRS configuration, or the network response may be one of RAR, Msg3, Msg4, and/or Ack to decide PRS configuration.

<FIG> illustrates example on-demand PRS request scheme, in accordance with aspects of the present disclosure. The scheme shown in <FIG> may implemented by making appropriate modifications to a scheme for SI request. The scheme shown in <FIG> may be used in conventional <NUM>-step RACH as shown or in a <NUM>-step RACH (e.g., when Msg1 and Msg3 are combined in a single MsgA, while Msg2 and Msg4 are combined to form a single MsgB.

As illustrated in <FIG>, one or both of an Msg1 and Msg2 based on-demand PRS scheme or an Msg <NUM> and Msg <NUM> based on demand PRS scheme may be provided.

As illustrated, such a case may involve a SIB <NUM> (or a later SIB) that associates PRACH resources (e.g., sequences) with a complete PRS configuration. In another case, an Msg3/<NUM> based on-demand PRS may be provided. In such a case, the scheme can define a new 'RRCPRSRequest', which the UE may provide via an Msg <NUM> and may include PRS configuration explicitly or via index into a table that is specified in the wireless communication standard and/or configured by one or more SIBs.

Some possible variations are possible when re-using mechanisms like that shown in <FIG> for on-demand PRS. For example, one change may include adding PRS configuration in Msg2 or Msg <NUM>. For Msg2 or Msg <NUM>, the addition could be in PDCCH or in PDSCH. For example, Msg2 may indicate more detailed PRS configuration information. The UE may use Msg3 to indicate further selection/indication of PRS configuration preferences (in particular, among the options indicated in Msg2), and Msg4 could confirm the configuration. Another variation may be to add an acknowledgment (Ack) for Msg4, depending on configuration choices selected. Some PRS configurations may only activate upon Ack, to avoid unnecessary activation of PRS that the requesting UE will not receive because it missed the Msg4. Such a scheme may be used when the Ack signal is expected to be reliable enough, to avoid a scenario where the UE expects but does not receive PRS, because the gNB missed the Ack. Another possible variation is to utilize a same or similar procedure for UL SRS and/or PRS as well. Such a case may include a timing adjustment (TA) in RAR, to ensure that the UL transmission (of SRS/PRS) is time-aligned at its intended gNB receiver.

The methods described herein comprise one or more steps or actions for achieving the described method.

Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an element in the singular is not intended to mean "one and only one" unless specifically so stated, but rather "one or more. Moreover, nothing described herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. §<NUM>, sixth paragraph, unless the element is expressly recited using the phrase "means for" or, in the case of a method claim, the element is recited using the phrase "step for.

For example, operations <NUM> illustrated in <FIG> and operations <NUM> illustrated in <FIG> correspond to means 1000A illustrated in <FIG> and means 1100A illustrated in <FIG>, respectively.

For example, means for transmitting and/or means for receiving may comprise one or more of a transmit processor <NUM>, a TX MIMO processor <NUM>, a receive processor <NUM>, or antenna(s) <NUM> of the base station <NUM> and/or the transmit processor <NUM>, a TX MIMO processor <NUM>, a receive processor <NUM>, or antenna(s) <NUM> of the user equipment <NUM>. Additionally, means for deactivating, means for configuring, means for broadcasting may comprise one or more processors, such as the controller/processor <NUM> of the base station <NUM> and/or the controller/processor <NUM> of the user equipment <NUM>.

In the case of a user terminal <NUM> (see <FIG>); a user interface (e.g., keypad, display, mouse, joystick, etc.) may also be connected to the bus.

For example, instructions for perform the operations described herein and illustrated in <FIG> and <FIG>.

Claim 1:
A method for wireless communication by a user equipment, UE (<NUM>), comprising:
transmitting (<NUM>), to one or more base stations (<NUM>), a request to participate in a UE positioning procedure, wherein the request indicates one or more parameters to be used for transmission of positioning reference signals, PRS, as part of the UE positioning procedure; and
receiving (<NUM>), from the one or more base stations, PRS transmitted in accordance with the one or more parameters indicated in the request;
wherein the one or more parameters indicate a quasi-colocation, QCL/beam-direction to use for the UE positioning procedure.