Patent Description:
Aspects of wireless communication may comprise direct communication between devices based on sidelink, such as vehicle-to-everything (V2X) or other device-to-device (D2D) communication. There exists a need for further improvements in sidelink communication.

<CIT> describes a system and method for improving downlink spectrum efficiency. A higher order modulation transmission may be configured to be indicated by the network or a device. Multiple modulation and coding scheme (MCS) tables, transport block size (TSB) tables, and/or channel quality index (CQI) tables may be provided to support the higher order modulation transmission.

<NPL> discusses <NUM>nd SCI design w/wo CRC scrambled by Dest L1-ID and CQI table indication for triggered CSI reports and includes a proposal that (<NUM>nd) SCI can indicate the CQI table assumed for the triggered CSI reports.

<NPL> at section <NUM> SCI acquisition subsection <NUM> MCS and CQI table determination proposes that only a single MCS table (and the associated CQI table) can be configured per resource pool.

The invention is defined in the appended independent claims. Optional features are defined in the dependent claims.

By way of example, and not limitation, such computer-readable media can comprise a random-access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.

While aspects and implementations are described in this application by illustration to some examples, those skilled in the art will understand that additional implementations and use cases may come about in many different arrangements and scenarios. Innovations described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, implementations and/or uses may come about via integrated chip implementations and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, artificial intelligence (AI)-enabled devices, etc.). While some examples may or may not be specifically directed to use cases or applications, a wide assortment of applicability of described innovations may occur. Implementations may range a spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some practical settings, devices incorporating described aspects and features may also include additional components and features for implementation and practice of claimed and described aspect. For example, transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, RF-chains, power amplifiers, modulators, buffer, processor(s), interleaver, adders/summers, etc.). It is intended that innovations described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, end-user devices, etc. of varying sizes, shapes, and constitution.

A base station may configure the UE with a CSI configuration for the UE to use when transmitting CSI reports. The configuration may include a CQI table for the UE to use in connection with the CSI report. In contrast to a CSI report configured by a base station, in sidelink communication, there may be a single CSI report configuration for a unicast link between two UEs. Aspects presented herein enable a UE that is triggere d to send an aperiodic CSI report over sidelink to determine a CQI table to use for with the CSI report. The aspects may enable different CQI tables to be applied for different CSI reports even though there may be a single CSI report configuration for sidelink unicast communication.

As presented herein, the UE may receive an indication over sidelink of an MCS table for sidelink communication with another UE. The UE may receive the indication for the MCS table in a first portion of sidelink control information, e.g., which may be referred to as a first stage SCI or SCI-<NUM>. The UE may receive a trigger for providing a CSI report over sidelink. The aperiodic CSI report may be triggered by a second portion of SCI, e.g., which may be referred to as a second stage SCI or SCI-<NUM>. The UE may determine the CQI table to apply for the CSI report over sidelink based on the MCS table indicated in the first stage SCI.

Some wireless communication may be exchanged directly between wireless devices, e.g., over sidelink or a PC5 interface. Among other examples, sidelink communication may include vehicle-based communication devices that can communicate from vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I) (e.g., from the vehicle-based communication device to road infrastructure nodes such as a Road Side Unit (RSU)), vehicle-to-network (V2N) (e.g., from the vehicle-based communication device to one or more network nodes, such as a base station), vehicle-to-pedestrian (V2P), cellular vehicle-to-everything (C-V2X), and/or a combination thereof and/or with other devices, which can be collectively referred to as vehicle-to-anything (V2X) communications. Referring again to <FIG>, in certain aspects, a UE <NUM>, e.g., a transmitting Vehicle User Equipment (VUE) or other UE, may be configured to transmit messages directly to another UE <NUM>. The communication may be based on V2X or other D2D communication, such as Proximity Services (ProSe), etc. Communication based on V2X and/or D2D may also be transmitted and received by other transmitting and receiving devices, such as Road Side Unit (RSU) <NUM>, etc. Aspects of the communication may be based on PC5 or sidelink communication e.g., as described in connection with the example in <FIG>.

In some aspects, the UE <NUM> may include a CQI table component <NUM> configured to receive a first set of control information, e.g., in a first portion of SCI indicating an MCS table and a second set of control information triggering a CSI report, e.g., in a second portion of SCI, and to determine a CQI table for the CSI report based on the MCS table indicated in the first set of control information. The UE <NUM> that transmits the SCI may include a CSI component <NUM> configured to transmit the first set of control information indicating an MCS table and the second set of control information triggering a CSI report from a receiver. The CSI component <NUM> may be configured to receive the CSI report in response to the second set of control information and based on the CQI table associated with the MCS table indicated in the first set of control information.

The communication links <NUM> may use multiple-in put and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and/or transmit diversity. Allocation of carriers may be asymmetric with respectto DL and UL (e.g., more or fewer carriers may be allocated for DL than for UL).

Communications using the mmW / near mmW radio frequency (RF) band (e.g., <NUM> - <NUM>) has extremely high path loss and a short range. Base stations / UEs may operate within one or more frequency range bands.

The concepts described herein may be applicable to sidelink. Aspects may be applicable to other similar areas, such as NR, LTE, LTE-A, CDMA, GSM, and other wireless technologies.

<FIG> includes diagrams <NUM> and <NUM> illustrating example aspects of slot structures that may be used for sidelink communication (e.g., between UEs <NUM>, RSU <NUM>, etc.). The slot structure may be within a <NUM>/NR frame structure in some examples. In other examples, the slot structure may be within an LTE frame structure. The example slot structure in <FIG> is merely one example, and other sidelink communication may have a different frame structure and/or different channels for sidelink communication. Diagram <NUM> illustrates a single resource block of a single slot transmission, e.g., which may correspond to a <NUM> transmission time interval (TTI). A physical sidelink control channel may be configured to occupy multiple physical resource blocks (PRBs), e.g., <NUM>, <NUM>, <NUM>, <NUM>, or <NUM> PRBs. The PSCCH may be limited to a single sub-channel. A PSCCH duration may be configured to be <NUM> symbols or <NUM> symbols, for example. A sub-channel may comprise <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, or <NUM> PRBs, for example. The resources for a sidelink transmission may be selected from a resource pool including one or more subchannels. As a non-limiting example, the resource pool may include between <NUM>-<NUM> subchannels. A PSCCH size may be established for a resource pool, e.g., as between <NUM>-<NUM> % of one subchannel for a duration of <NUM> symbols or <NUM> symbols. The diagram <NUM> in <FIG> illustrates an example in which the PSCCH occupies about <NUM>% of a subchannel, as one example to illustrate the concept of PSCCH occupying a portion of a subchannel. The physical sidelink shared channel (PSSCH) occupies at least one subchannel. The PSCCH may include a first portion of sidelink control information (SCI), and the PSSCH may include a second portion of SCI in some examples.

Each time slot may include a resource block (RB) (also referred to as physical RBs (PRBs)) that extends <NUM> consecutive subcarriers. As illustrated in <FIG>, some of the REs may comprise control information in PSCCH and some REs may comprise demodulation RS (DMRS). At least one symbol may be used for feedback. <FIG> illustrates examples with two symbols for a physical sidelink feedback channel (PSFCH) with adjacent gap symbols. A symbol prior to and/or after the feedback may be used for turnaround between reception of data and transmission of the feedback. The gap enables a device to switch from operating as a transmitting device to prepare to operate as a receiving device, e.g., in the following slot. Data may be transmitted in the remaining REs, as illustrated. The data may comprise the data message described herein. The position of any of the data, DMRS, SCI, feedback, gap symbols, and/or LBT symbols may be different than the example illustrated in <FIG>. Multiple slots may be aggregated together in some aspects.

<FIG> is a block diagram of a first wireless communication device <NUM> in communication with a second wireless communication device <NUM>. In some examples, the devices <NUM> and <NUM> may communicate based on sidelink using a PC5 interface. The devices <NUM> and the <NUM> may comprise a UE, an RSU, a base station, etc. Packets may be provided to a controller/processor <NUM> that implements layer <NUM> and layer <NUM> functionality.

At least one of the TX processor <NUM>, the RX processor <NUM>, and the controller/processor <NUM> may be configured to perform aspects in connection with the CQI table component <NUM> of <FIG>.

At least one of the TX processor <NUM>, the RX processor <NUM>, and the controller/processor <NUM> may be configured to perform aspects in connection with the CSI component <NUM> of <FIG>.

<FIG> illustrates an example <NUM> of wireless communication between devices based on V2X or other D2D communication. The communication may be based on a slot structure comprising aspects described in connection with <FIG>. For example, the UE <NUM> may transmit a sidelink transmission <NUM>, e.g., comprising a control channel (e.g., PSCCH) and/or a corresponding data channel (e.g., PSSCH), that may be received by UEs <NUM>, <NUM>, <NUM>. A control channel may include information (e.g., sidelink control information (SCI)) for decoding the data channel including reservation information, such as information about time and/or frequency resources that are reserved for the data channel transmission. For example, the SCI may indicate a number of TTIs, as well as the RBs that will be occupied by the data transmission. The SCI may also be used by receiving devices to avoid interference by refraining from transmitting on the reserved resources. The UEs <NUM>, <NUM>, <NUM>, <NUM> may each be capable of sidelink transmission in addition to sidelink reception. Thus, UEs <NUM>, <NUM>, <NUM> are illustrated as transmitting sidelink transmissions <NUM>, <NUM>, <NUM>, <NUM>. The sidelink transmissions <NUM>, <NUM>, <NUM>, <NUM>, <NUM> may be unicast, broadcast or multicast to nearby devices. For example, UE <NUM> may transmit communication <NUM>, <NUM> intended for receipt by other UEs within a range <NUM> of UE <NUM>, and UE <NUM> may transmit communication <NUM>. Additionally/alternatively, RSU <NUM> may receive communication from and/or transmit communication <NUM> to UEs <NUM>, <NUM>, <NUM>, <NUM>.

Sidelink communication may be based on different types or modes of resource allocation mechanisms. In a first resource allocation mode (which may be referred to herein as "Mode <NUM>"), centralized resource allocation may be provided by a network entity. For example, a base station <NUM> or <NUM> may determine resources for sidelink communication and may allocate resources to different UEs <NUM> to use for sidelink transmissions. In this first mode, a UE receives the allocation of sidelink resources from the base station <NUM> or <NUM>. In a second resource allocation mode (which may be referred to herein as "Mode <NUM>"), distributed resource allocation may be provided. In Mode <NUM>, each UE may autonomously determine resources to use for sidelink transmission. In order to coordinate the selection of sidelink resources by individual UEs, each UE may use a sensing technique to monitor for resource reservations by other sidelink UEs and may select resources for sidelink transmissions from unreserved resources. Devices communicating based on sidelink, may determine one or more radio resources in the time and frequency domain that are used by other devices in order to select transmission resources that avoid collisions with other devices. The sidelink transmission and/or the resource reservation may be periodic or aperiodic, where a UE may reserve resources for transmission in a current slot and up to two future slots.

The UEs may transmit SCI in two stages. A first portion of SCI, or a first stage of SCI may be transmitted in the PSCCH. The first portion of SCI may be referred to as SCI-<NUM>. The second portion of the SCI, or the second stage of the SCI, may be transmitted in a PSSCH. The second portion of the SCI may be referred to as SCI-<NUM>. The SCI-<NUM>, e.g., transmitted on the PSCCH, may include information for resource allocation and decoding the SCI-<NUM>. The SCI-<NUM>, e.g., transmitted on the PSSCH, may include information for decoding data. The SCI-<NUM> may be decodable by all UEs whereas some UEs may not be capable of decoding the SCI-<NUM>. The SCI-<NUM> may include one or more of priority information (e.g., a quality of service QoS value), a PSSCH resource assignment (such as frequency and time resource assignment for PSSCH), a resource reservation period, a PSSCH DMRS pattern, a format information of SCI-<NUM> (such as size information), an offset for SCI-<NUM> control resource allocation, an indication of a number of PSSCH DMRS ports, a modulation and coding scheme (MCS), or the like. The SCI-<NUM> may include one or more of a HARQ process ID, a new data indicator (NDI), a source ID, a destination ID, a CSI report trigger, a Zone ID of transmitter and/or a communication range.

The UE <NUM>, <NUM>, <NUM>, <NUM> or RSU <NUM> may comprise a CQI Table component <NUM> and/or a CSI component <NUM>, as described in connection with <FIG>. The UEs may use the CSI component <NUM> when requesting/receiving CSI reports from other UEs and may use the CQI table component <NUM> when transmitting CSI reports to a requesting UE. As the UEs may operate as a sidelink receiver and a sidelink transmitter, the UEs may include both components and may use the components based on whether the UE is transmitting sidelink communication or receiving sidelink communication.

Wireless communication may be based on a modulation and coding scheme that provides a code rate for data transmitted by a wireless device. The MCS may be based on a table. There may be multiple MCS tables. For example, for communication between a base station and a UE over a Uu interface with cyclic prefix - orthogonal frequency division multiplexing (CP-OFDM), there may be three MCS tables. A first table may include a <NUM>-QAM MCS table. A second table may include a <NUM>-QAM table. A third table may include a low spectral efficiency MCS table. Multiple MCS tables may also be used in sidelink communication.

For communication between a base station and a UE over the Uu interface, there are multiple CQI tables. A first CQI table includes a <NUM>-QAM MCS table associated with a <NUM>% block error rate (BLER) target. A second CQI table includes a <NUM> QAM table associated with a <NUM>% BLER target. A third CQI table includes a low spectral efficiency CQI table associated with a 1e-<NUM> BLER target. For communication over an Uu interface, a base station configures the UE with a CQI table for each CSI report configuration. For example, the base station may configure the UE for a CSI report in downlink control information that indicates the CQI table for the configured CSI report.

In contrast to a CSI report configured by a base station, in sidelink communication, there may be a single CSI report configuration for a unicast link between two UEs, e.g., between UE <NUM> and <NUM> in <FIG>. The MCS table for communication may be signaled from one UE to the other UE in a first stage SCI (e.g., SCI-<NUM>). Periodic CSI reporting may not be supported for sidelink. Instead, an aperiodic CSI report may be triggered based on SCI received from another UE. For example, a second stage SCI (e.g., SCI-<NUM>) may include a trigger for an aperiodic sidelink report. Aspects presented herein enable a UE that is triggered to send an aperiodic CSI report over sidelink to determine a CQI table to use for the CSI report. The aspects may enable different CQI tables to be applied for different CSI reports even though there may be a single CSI report configuration for unicast communication between the two UEs.

As presented herein, the UE that is triggered to send the CSI report may determine the CQI table for the CSI report based on an MCS table indication in SCI. The SCI may be associated with the triggered CSI report. For example, the SCI may comprise the CSI report trigger. As an example, the MCS table indication may be received in a first set of control information (such as SCI-<NUM>), and the CSI trigger may be received in a second set of control information (such as SCI-<NUM>). The UE may use an association or relationship between the control information to determine the CQI table, for reporting CSI in the CSI report, based on the MCS of the associated control information.

<FIG> illustrates an example communication flow <NUM> between a UE <NUM> and a UE <NUM> that includes the transmission of an aperiodic CSI report over sidelink. The UE <NUM> sends SCI-<NUM><NUM> indicating an MCS table to the UE <NUM>. In some aspects, the UE <NUM> may have a unicast link with the UE <NUM>. In other aspects, the UE <NUM> may broadcast or groupcast the SCI-<NUM> to nearby UEs including the UE <NUM>. The UE <NUM> then transmits the SCI-<NUM><NUM> with an indication for the UE <NUM> to provide a CSI report. The SCI-<NUM> may be referred to as triggering an aperiodic CSI report by the UE <NUM>. In response to receiving the SCI-<NUM><NUM>, the UE <NUM> performs channel measurements, at <NUM>, and calculates the CSI. For example, at <NUM>, the UE may determine a CQI based on the channel measurements performed at <NUM> and the CQI table determined at <NUM>. For example, the UE <NUM> may measure one or more of an achievable spectral efficiency (and indicated as a channel quality index (CQI), a rank of the channel (and indicated as a rank indicator (RI)), and a precoder that achieves the peak spectral efficiency (and indicated as a precoder matrix index (PMI)). The UE <NUM> reports the CSI, including the CQI, to the UE <NUM> in a CSI report <NUM>. For example, the CSI report may include an indicator that carries information about the channel quality. The indicator may include an index from a CQI table. The CQI table may include entries based on modulation, code rate, and efficiency. The CQI table shown here provides one example MCS table to illustrate the concept. Based on the channel measurements and the MCS table indicated in the SCI-<NUM>, the UE may determine an index from the table that represents the measured channel quality and may include the index in the CSI report <NUM>. The use of the index from the CQI table enables the UE to report a quantized value for the observed channel quality. As illustrated at <NUM>, the UE <NUM> determines the CQI table to use for the CSI report <NUM> based on the MCS table indicated in the SCI-<NUM>, e.g., the SCI-<NUM> that is associated with the SCI-<NUM> that triggered the CSI report.

According to the invention, there are multiple CQI tables, and the UE <NUM> determines which of the CQI tables to use for the CSI report based on the MCS table indicated in the SCI-<NUM>.

Each of the multiple MCS tables is associated with a particular CQI table. The association may be defined, in some examples. As an example, the association between an MCS table and a CQI table may be defined in a standard. In other examples, the association may be configured, e.g., over PC5-RRC signaling. For example, as illustrated in <FIG>, an association between the MCS tables and the CQI tables may be indicated in PC5-RRC signaling, at <NUM>. As an example, a low spectral efficiency <NUM> QAM MCS table may be associated with a low spectral efficiency <NUM> QAM CQI table. A regular <NUM> QAM MCS table may be associated with a regular <NUM> QAM CQI table. A <NUM> QAM MCS table may be associated with a <NUM> QAM CQI table.

Different SCI-<NUM> from the UE <NUM> may indicate different MCS tables. As the UE <NUM> uses the MCS table indicated in the SCI-<NUM> to determine the CQI table for reporting CSI, the UE <NUM> uses different CQI tables for a CSI report triggered in SCI-<NUM> that is associated with SCI-<NUM> indicating different MCS tables.

The BLER target may be based on the CQI table, e.g., the CQI table determined by the UE at <NUM>.

The aspects presented herein enable the CQI table to be determined by the UE <NUM> without signaling the CQI table to the UE <NUM>, which improves the efficient use of wireless resources and reduced the amount of signaling between the two UEs. Additionally, the manner of determining the CQI table presented in <FIG> enables different CQI tables to be used for different CSI reports even if there is a single CSI configuration for the sidelink unicast between two UEs. The CQI table may be updated in RRC signaling. However, the aspects presented in <FIG> enable the CQI table to updated when the MCS table changes and without an RRC reconfiguration.

<FIG> is a flowchart <NUM> of a method of wireless communication. The method may be performed by a wireless device that communications based on sidelink. In some examples, the method may be performed by a UE (e.g., the UE <NUM>, <NUM>, <NUM>, <NUM>; the wireless device <NUM>; the apparatus <NUM>). One or more aspects illustrated in <FIG> may be optional. Various implementations may include a method with any combination of the aspects described in connection with <FIG>. The aspects presented herein may enable the use of different CQI tables for sidelink CSI reports.

At <NUM>, the wireless device receives a first set of control information indicating an MCS table. The first set of control information is received in a first portion of SCI, such as SCI-<NUM> received on a PSCCH. The first portion of SCI is referred to as a first stage SCI. The first set of control information may include aspects described in connection with <NUM> in <FIG>. The reception of the first set of control information may be performed by the MCS Table component <NUM> of the apparatus <NUM> in <FIG>, for example.

At <NUM>, the wireless device receives a second set of control information triggering a CSI report. The second set of control information may comprise a second portion of the SCI associated with the first portion of the SCI, e.g., SCI-<NUM> that is received on a PSSCH. The second portion of the SCI is referred to as a second stage SCI. The second stage of the SCI is associated with the first stage of the SCI, e.g., that indicated the MCS table. The second set of control information may include aspects described in connection with <NUM> in <FIG>. The reception of the second set of control information may be performed by the control information component <NUM> of the apparatus <NUM> in <FIG>, for example.

At <NUM>, the wireless device determines a CQI table for the CSI report, e.g., a sidelink CSI report, based on the MCS table indicated in the first set of control information, i.e., first stage SCI. The determination may include aspects described in connection with <NUM> in <FIG>. The determination may be performed, for example, by the determination component <NUM> of the apparatus <NUM> in <FIG>. A BLER target for the CSI report may be based on the determined CQI table.

In response to receiving the second set of control information that triggers the CSI report, the wireless device may perform channel measurements in response to the second set of control information that triggers the CSI report, at <NUM>. For example, the wireless device may measure one or more of an achievable spectral efficiency (and indicated as a channel quality index (CQI), a rank of the channel (and indicated as a rank indicator (RI)), and a precoder that achieves the peak spectral efficiency (and indicated as a precoder matrix index (PMI)). The measurements may be performed by the measurement component <NUM> of the apparatus <NUM> in <FIG>, for example.

At <NUM>, the wireless device calculates the CQI to be indicated in the CSI report, e.g., based on the channel measurements and the determined CQI table. For example, the wireless device may determine a CQI index in the determined CQI table based on the measurements, the MCS, etc. The calculation may be determined by the CSI report component <NUM> of the apparatus <NUM> in <FIG>, for example.

At <NUM>, the wireless device transmits the CSI report including CQI that is based on a CQI table associated with the MCS table indicated in the first set of control information. The CSI report may be transmitted over sidelink and may include a reference to an index from the determined CQI table, such as described in connection with <FIG>. Thus, the CSI report may indicate the CQI based on an index of the corresponding CQI table, e.g., determined at <NUM>. The transmission of the CSI report may be performed, e.g., by the transmission component <NUM> of the apparatus <NUM> in <FIG>.

As illustrated at <NUM>, the wireless device may receive an indication of an association between the MCS table and the CQI table. The indication may include aspects described in connection with <NUM> in <FIG>. The indication may be performed, e.g., by the association component <NUM> of the apparatus <NUM> in <FIG>. The indication may be received in PCS-RRC signaling. The wireless device may receive a mapping between multiple MCS tables and multiple CQI tables.

In other examples, the association between the MCS table and the CQI table may be defined and may be known by both the transmitting wireless device and the receiving wireless device. Thus, the wireless device may determine the CQI table, at <NUM>, based on the defined association between the MCS table and the CQI table.

<FIG> is a flowchart <NUM> of a method of wireless communication. The method may be performed by a wireless device that communications based on sidelink. In some examples, the method may be performed by a UE (e.g., the UE <NUM>; the apparatus <NUM>). One or more aspects illustrated in <FIG> may be optional. Various implementations may include a method with any combination of the aspects described in connection with <FIG>. The aspects presented herein may enable the use of different CQI tables for sidelink CSI reports.

A <NUM>, the wireless device transmits a first set of control information indicating an MCS table. The first set of control information is transmitted in a first portion of SCI, SCI-<NUM> transmitted on a PSCCH. The first portion of SCI is referred to as a first stage SCI. The first set of control information may include aspects described in connection with <NUM> in <FIG>. The transmission of the first set of control information may be performed by the MCS Table component <NUM> of the apparatus <NUM> in <FIG>, for example.

At <NUM>, the wireless device transmits a second set of control information triggering a CSI report from a receiver. A CQI table for the CSI report is based on the MCS table indicated in the first set of control information. The second set of control information comprises a second portion of the SCI associated with the first portion of the SCI, i.e., SCI-<NUM> that is transmitted on a PSSCH. The second portion of SCI is referred to as a second stage SCI. The second set of control information may include aspects described in connection with <NUM> in <FIG>. The transmission of the second set of control information may be performed by the control information component <NUM> of the apparatus <NUM> in <FIG>, for example.

At <NUM>, the wireless device receives the CSI report including CQI that is based on the CQI table associated with the MCS table indicated in the first set of control information. The CSI report may be received over sidelink and may indicate the CQI based on an index of the corresponding CQI table, such as described in connection with <FIG>. The reception of the CSI report may be performed, e.g., by the reception component <NUM> of the apparatus <NUM> and/or the CSI report component <NUM> in <FIG>. A BLER target for the CSI report may be based on the determined CQI table.

As illustrated at <NUM>, the wireless device may transmit an indication of an association between the MCS table and the CQI table. The indication may include aspects described in connection with <NUM> in <FIG>. The indication may be performed, e.g., by the association component <NUM> of the apparatus <NUM> in <FIG>. The indication may be transmitted in PCS-RRC signaling. The wireless device may indicate a mapping between multiple MCS tables and multiple CQI tables.

In other examples, the association between the MCS table and the CQI table may be defined and may be known by both the transmitting wireless device and the receiving wireless device.

The apparatus <NUM> may be a UE, or other device that communicate s based on sidelink. The device includes a baseband processor <NUM> (also referred to as a modem) coupled to a RF transceiver <NUM>. In some aspects, the baseband processor <NUM> may be a cellular baseband processor, and the RF transceiver <NUM> may be a cellular RF transceiver. The apparatus may further include one or more subscriber identity modules (SIM) cards <NUM>, an application processor <NUM> coupled to a secure digital (SD) card <NUM> and a screen <NUM>, a Bluetooth module <NUM>, a wireless local area network (WLAN) module <NUM>, a Global Positioning System (GPS) module <NUM>, and/or a power supply <NUM>. The baseband processor <NUM> communicates through the RF transceiver <NUM> with the UE <NUM> and/or BS <NUM>/<NUM>. The baseband processor <NUM> may include a computer-readable medium / memory. The baseband processor <NUM> is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the baseband processor <NUM>, causes the baseband processor <NUM> to perform the various functions described supra. The computer-readable medium / memory may also be used for storing data that is manipulated by the baseband processor <NUM> when executing software. The baseband processor <NUM> further includes a reception component <NUM>, a communication manager <NUM>, and a transmission component <NUM>. The components within the communication manager <NUM> may be stored in the computer-readable medium / memory and/or configured as hardware within the baseband processor <NUM>. The baseband processor <NUM> may be a component of the device <NUM> and may include the memory <NUM> and/or at least one of the TX processor <NUM>, the RX processor <NUM>, and the controller/processor <NUM>. In one configuration, the apparatus <NUM> may be a modem chip and include just the baseband processor <NUM>, and in another configuration, the apparatus <NUM> may be the entire UE (e.g., see <NUM> of <FIG>) and include the additional modules of the apparatus <NUM>.

The communication manager <NUM> includes an MCS table component <NUM>, a control information component <NUM>, a determination component <NUM>, a measurement component <NUM>, a CSI report component <NUM>, and an association component <NUM> configured to perform the aspects described in connection with <FIG>. For example, the MCS table component <NUM> may be configured to receive or transmit a first set of control information indicating an MCS table, e.g., as described in connection with <NUM> or <NUM> in <FIG> or <FIG>. The apparatus <NUM> may further include a control information component <NUM> configured to receive or transmit a second set of control information triggering a CSI report, e.g., as described in connection with <NUM> or <NUM> in <FIG> or <FIG>. The apparatus <NUM> further includes a CSI report component <NUM> configured to receive or transmit the CSI report including CQI that is based on a CQI table associated with the MCS table indicated in the first set of control information, e.g., as described in connection with <NUM> or <NUM> in <FIG> or <FIG>. The apparatus may further include a determination component <NUM> configured to determine the CQI table based on the defined association between the MCS table and the CQI table, e.g., as described in connection with <NUM> in <FIG>. The apparatus may further include a measurement component <NUM> configured to perform channel measurements in response to the second set of control information that triggers the CSI report, e.g., as described in connection with <NUM> in <FIG>. The apparatus <NUM> may further include a CQI component <NUM> configured to calculate the CQI, for indication in the CSI report, based on the CQI table, e.g., determined by the determination component <NUM>, e.g., as described in connection with <NUM> in <FIG>. The apparatus <NUM> may further include an association component <NUM> configured to receive or transmit an indication of an association between an MCS table and a CQI table, e.g., as described in connection with <NUM> or <NUM> in <FIG> or <FIG>. In other aspects, the association between the MCS table and the CQI table may be defined.

The apparatus may include additional components that perform each of the blocks of the algorithm in the flowcharts of <FIG> and/or <NUM>, as well as the aspects described in connection with the communication flow in <FIG>. As such, each block in the flowcharts of <FIG> and/or <NUM>, as well as the aspects described in connection with the communication flow in <FIG>, may be performed by a component and the apparatus may include one or more of those components.

As shown, the apparatus <NUM> may include a variety of components configured for various functions. In one configuration, the apparatus <NUM>, and in particular the baseband processor <NUM>, includes means for receiving a first set of control information indicating an MCS table. The apparatus <NUM> may include means for receiving a second set of control information triggering a CSI report, and means for transmitting the CSI report including the CQI that is based on a CQI table associated with the MCS table indicated in the first set of control information. The apparatus <NUM> may further include means for determining a CQI table for the CSI report based on the MCS table indicated in the first set of control information. The apparatus <NUM> may further include means for performing channel measurements in response to the second set of control information that triggers the CSI report, and means for calculating the CQI report based on the determined CQI table. The apparatus <NUM> may further include means for receiving an indication of an association between the MCS table and the CQI table. The apparatus <NUM> may further include transmitting a first set of control information indicating an MCS table and means for transmitting a second set of control information triggering a CSI report from a receiver, where a CQI table for the CSI report is based on the MCS table indicated in the first set of control information. The apparatus <NUM> may further include means for receiving the CSI report in response to the second set of control information and based on the CQI table associated with the MCS table indicated in the first set of control information. The apparatus <NUM> may further include means for transmitting an indication of an association between the MCS table and the CQI table. The means may be one or more of the components of the apparatus <NUM> configured to perform the functions recited by the means, e.g., such as described in connection with the algorithm in <FIG> or <FIG>. As described supra, the apparatus <NUM> may include the TX Processor <NUM>, the RX Processor <NUM>, and the controller/processor <NUM>. As such, in one configuration, the means may be the TX Processor <NUM>, the RX Processor <NUM>, and the controller/processor <NUM> configured to perform the functions recited by the means.

Aspects presented herein enable a UE that is triggered to send an aperiodic CSI report over sidelink to determine a CQI table to use for with the CSI report. The aspects may enable different CQI tables to be applied for different CSI reports even though there may be a single CSI report configuration for sidelink unicast communication. As presented herein, the UE may receive an indication over sidelink of an MCS table for sidelink communication with another UE. The UE may receive the indication for the MCS table in a first portion of sidelink control information, e.g., which may be referred to as a first stage SCI or SCI-<NUM>. The UE may receive a trigger for providing a CSI report over sidelink. The aperiodic CSI report may be triggered by a second portion of SCI, e.g., which may be referred to as a second stage SCI or SCI-<NUM>. The UE may determine the CQI table to apply for the CSI report over sidelink based on the MCS table indicated in the first stage SCI.

Claim 1:
An apparatus for wireless communication at a wireless device (<NUM>), comprising:
means for
receiving (<NUM>) a first set of control information in a first stage of sidelink control information, SCI, the first set of control information indicating a modulation and coding scheme, MCS, table;
receiving (<NUM>) a second set of control information in a second stage of the SCI associated with the first stage, the second set of control information triggering a channel state information, CSI, report without indicating a channel quality indicator, CQI, table;
determining (<NUM>) the CQI table from multiple CQI tables based on a defined association between the MCS table indicated in the first stage of the SCI and the CQI table; and
transmitting (<NUM>) the CSI report triggered by the second stage of the SCI, the CSI report including a CQI that is based on the CQI table associated with the MCS table indicated in the first set of control information indicated in the first stage of the SCI.