Beamformed channel busy ratio

Abstract

Various aspects of the disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) can measure, for a first beam group of a set of beam groups associated with the UE, a first channel busy ratio (CBR) for the first beam group. The UE can receive, from a second UE, an indication of a second CBR for a second beam group associated with the second UE. The UE can transmit, to the second UE, a signal using beams included in the first beam group using one or more transmission parameters based at least in part on at least one of the first CBR or the second CBR. Numerous other aspects are described.

Description

[0001] Cross-reference of related applications

[0002] This patent application claims priority to U.S. nonprovisional patent application No. 17 / 167,606, filed on February 4, 2021, entitled “BEAMFORMED CHANNEL BUSYRATIO,” which is hereby incorporated herein by reference. Technical Field

[0003] This disclosure relates generally to wireless communications, and specifically to techniques and apparatus for beamforming channel busy rate (CBR). Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard released by the 3rd Generation Partnership Project (3GPP).

[0005] A wireless network may include multiple base stations (BSs) capable of supporting communication for multiple user equipments (UEs). UEs can communicate with the BS via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, while an uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, Access Point (AP), Radio Headend, Transmitter-Receiver Point (TRP), New Radio (NR) BS, 5G Node B, etc.

[0006] The above multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different user equipment to communicate at the city, country, region, and even global levels. NR (also known as 5G) is a set of enhancements to the LTE mobile standard released by 3GPP. NR aims to better support mobile broadband internet access by improving spectrum efficiency, reducing costs, improving service, utilizing new spectrum, and using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink (UL) to better integrate with other open standards, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements to LTE, NR, and other radio access technologies remain useful. Summary of the Invention

[0007] In some aspects, a user equipment (UE) for wireless communication includes: a memory and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: measure a first channel busy rate (CBR) of a first beam group in a set of beam groups associated with the UE; receive from a second UE an indication of a second CBR of a second beam group associated with the second UE; and transmit to the second UE, using beams included in the first beam group, a signal using one or more transmission parameters at least partially based on at least one of the first CBR or the second CBR.

[0008] In some aspects, a method of wireless communication performed by a UE includes: measuring a first CBR of a first beam group in a set of beam groups associated with the UE; receiving from a second UE an indication of a second CBR of a second beam group associated with the second UE; and transmitting to the second UE a signal using one or more transmission parameters at least partially based on at least one of the first CBR or the second CBR, using beams included in the first beam group.

[0009] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to perform the following operations: measure a first CBR of a first beam group in a set of beam groups associated with the UE; receive from a second UE an indication of a second CBR of a second beam group associated with the second UE; and transmit to the second UE, using beams included in the first beam group, a signal using one or more transmission parameters at least partially based on at least one of the first CBR or the second CBR.

[0010] In some aspects, an apparatus for wireless communication includes: a unit for measuring a first CBR of a first beam group in a set of beam groups associated with the apparatus; a unit for receiving from a UE an indication of a second CBR of a second beam group associated with the UE; and a unit for transmitting to a second UE a signal using one or more transmission parameters at least partially based on at least one of the first CBR or the second CBR, using beams included in the first beam group.

[0011] The aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication equipment and / or processing systems as described herein with reference to the accompanying drawings and description.

[0012] The features and technical advantages of examples according to this disclosure have been outlined quite extensively above to facilitate a better understanding of the following detailed description. Other features and advantages will be described below. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for achieving the same purpose as this disclosure. Such equivalent structures do not depart from the scope of the appended claims. The features of the concepts disclosed herein, their organization and operation, and related advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each drawing is provided for illustrative and descriptive purposes and not as a limitation of the definitions in the claims. Attached Figure Description

[0013] To gain a more detailed understanding of the features of this disclosure, a more specific description of the brief overview above can be obtained by referring to some of the aspects shown in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and should not be considered as limiting its scope, as the description may allow for other equivalent aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0014] Figure 1 This is a schematic diagram illustrating an example of a wireless network.

[0015] Figure 2 This is a schematic diagram illustrating an example of a base station communicating with a UE in a wireless network.

[0016] Figure 3 This is a schematic diagram illustrating an exemplary beamforming architecture that supports beamforming for communication.

[0017] Figure 4 This is a schematic diagram illustrating an example of side link communication.

[0018] Figure 5 This is a schematic diagram illustrating examples of side link communication and access link communication.

[0019] Figure 6 This is a schematic diagram illustrating an example of a beam group.

[0020] Figure 7 This is a schematic diagram illustrating an example of a sidelink communication network.

[0021] Figures 8A-8C This is a schematic diagram illustrating an example of beamforming channel busy rate (CBR) in relation to various aspects of this disclosure.

[0022] Figure 9 and 10 This is a schematic diagram illustrating an example of a beamforming CBR associated with various aspects of this disclosure.

[0023] Figure 11 This is a schematic diagram illustrating an example process associated with beamforming CBR according to various aspects of this disclosure.

[0024] Figure 12 and 13 This is a block diagram of an exemplary apparatus for wireless communication according to various aspects of this disclosure. Detailed Implementation

[0025] Various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function given throughout this disclosure. Rather, these aspects are provided to make this disclosure thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will understand that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or practice. Furthermore, the scope of this disclosure is intended to cover such apparatuses or methods practiced using other structures, functions, or structures and functions that are appended to or different from the aspects of this disclosure set forth herein. It should be understood that any aspect of this disclosure disclosed herein may be embodied by one or more elements of the claims.

[0026] Several aspects of a telecommunications system will now be presented with reference to various devices and technologies. These devices and technologies will be described in detail below and illustrated in the accompanying drawings through various frames, modules, components, circuits, steps, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0027] It should be noted that although the terms commonly associated with 5G or NR radio access technology (RAT) are used in this document to describe the aspects, the aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT and / or RATs after 5G (e.g., 6G).

[0028] Figure 1 This is a schematic diagram illustrating an example of a wireless network 100. Among other examples, wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network. Wireless network 100 may include multiple base stations 110 (shown as BS110a, BS110b, BS110c, and BS110d) and other network entities. A base station (BS) is an entity that communicates with user equipment (UE) and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, Transmitter Receiver Point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0029] A BS can provide communication coverage for macrocells, picocells, femtocells, and / or other cell types. A macrocell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access for UEs with a service subscription. A picocell can cover a smaller geographic area and can allow unrestricted access for UEs with a service subscription. A femtocell can cover a relatively small geographic area (e.g., a home) and can allow restricted access for UEs associated with the femtocell (e.g., UEs in a Closed User Group (CSG)). A BS used for macrocells can be referred to as a macro BS. A BS used for picocells can be referred to as a pico BS. A BS used for femtocells can be referred to as a femtocell BS or a home BS. Figure 1 In the example shown, BS110a can be a macro BS for macro cell 102a, BS110b can be a pico BS for pico cell 102b, and BS110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5G NB,” and “cell” are used interchangeably herein.

[0030] In some respects, the cell may not necessarily be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile BS. In some respects, BSs may interconnect with each other and / or interconnect to one or more other BSs or network nodes (not shown) in the wireless network 100 using any suitable transport network via various types of backhaul interfaces such as direct physical connections or virtual networks.

[0031] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and transmit the data transmissions to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that can relay the transmissions of other UEs. Figure 1 In the example shown, relay BS110d can communicate with macro BS110a and UE 120d to facilitate communication between BS110a and UE 120d. A relay BS can also be called a relay station, relay base station, relay, etc.

[0032] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs) (such as macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs can have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs can have high transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs can have low transmit power levels (e.g., 0.1 to 2 watts).

[0033] Network controller 130 can be coupled to a group of base stations (BSs) and provide coordination and control for these BSs. Network controller 130 can communicate with the BSs via backhaul. The BSs can also communicate with each other directly or indirectly via wireless or wired backhaul.

[0034] UEs 120 (e.g., 120a, 120b, 120c) may be distributed throughout the wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, user unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), 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 computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or apparatus, a biometric sensor / device, a wearable device (smartwatch, smart clothing, smart glasses, smart bracelet, smart jewelry (e.g., smart ring, smart bangle), an entertainment device (e.g., a music or video device or a satellite radio device), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0035] Some UEs can be considered Machine-Type Communication (MTC) or Evolved or Enhanced Machine-Type Communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, which can communicate with a base station, another device (e.g., a remote device), or some other entity. Wireless nodes can provide connectivity to or to a network (e.g., a wide area network such as the Internet or a cellular network) via wired or wireless communication links. Some UEs can be considered Internet of Things (IoT) devices and / or can be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs can be considered Customer Premises Equipment (CPE). UE 120 can be included within a housing that houses components of UE 120, such as processor components and / or memory components. In some aspects, the processor components and memory components can be coupled together. For example, processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0036] Typically, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, air interface, etc. A frequency can also be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0037] In some respects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary device). For example, UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-all (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols), and / or mesh networks. In this case, UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere in this document that are performed by base station 110.

[0038] Devices in the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices in the wireless network 100 can communicate using an operating band with a first frequency range (FR1), which can span from 410 MHz to 7.125 GHz, and / or can communicate using an operating band with a second frequency range (FR2), which can span from 24.25 GHz to 52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred to as intermediate frequency (IF) frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is generally referred to as the "sub-6 GHz" band. Similarly, FR2 is generally referred to as the "millimeter wave" band, although this differs from the extremely high frequency (EHF) band (30 GHz–300 GHz) designated as "millimeter wave" by the International Telecommunication Union (ITU). Therefore, unless otherwise specified, it should be understood that the terms "sub-6GHz," etc., if used herein, can broadly refer to frequencies less than 6GHz, frequencies within FR1, and / or intermediate frequency band frequencies (e.g., greater than 7.125GHz). Similarly, unless otherwise specified, it should be understood that the terms "millimeter wave," etc., if used herein, can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequency band frequencies (e.g., less than 24.25GHz). It is conceivable that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein can be applied to these modified frequency ranges.

[0039] As mentioned above, Figure 1 This is provided as an example. Other examples may be provided in conjunction with... Figure 1 The examples described are different.

[0040] Figure 2 This is a schematic diagram of an example 200 of a base station 110 communicating with a UE 120 in a wireless network 100. The base station 110 may be equipped with T antennas 234a to 234t, while the UE 120 may be equipped with R antennas 252a to 252r, wherein typically T ≥ 1 and R ≥ 1.

[0041] At base station 110, transmit processor 220 can receive data for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQI) received from the UE, process (e.g., code and modulate) the data for each UE based at least in part on the selected MCS(one or more) for the UE, and provide data symbols for all UEs. Transmit processor 220 can also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper-layer signaling) and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding, if applicable) on data symbols, control symbols, overhead symbols, and / or reference symbols, and can provide T output symbol streams to T modulators (MODs) 232a to 232t. Each modulator 232 can process its corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t can be transmitted via T antennas 234a to 234t respectively.

[0042] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations, and can provide received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can adjust (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM) to obtain received symbols. MIMO detector 256 can obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection (if applicable) on the received symbols, and provide detected symbols. Receiver processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to data sink 260, and provide decoded control information and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine parameters such as the Reference Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Received Quality (RSRQ), and / or Channel Quality Indicator (CQI). In some respects, one or more components of the UE 120 may be included in the housing 284.

[0043] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in a core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0044] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, or may be included within one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements coupled to one or more transmitting and / or receiving components (such as...) Figure 2 One or more antenna elements (one or more components).

[0045] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reporting including RSRP, RSSI, RSRQ, and / or CQI). Transmit processor 264 can also generate reference symbols for one or more reference signals. Symbols from transmit processor 264 can be pre-encoded (if applicable) by TX MIMO processor 266, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some aspects, modulators and demodulators (e.g., MOD / DEMOD 254) of UE 120 can be included in the modem of UE 120. In some aspects, UE 120 includes a transceiver. The transceiver may include any combination of antenna(s) 252, modulator and / or demodulator 254, MIMO detector 256, receiver processor 258, transmitter processor 264, and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein, for example, as referenced. Figure 8A , 8B As described in 8C, 9, 10 and / or 11.

[0046] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule UE 120 for downlink and / or uplink communication. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of base station 110 may be included in the modem of base station 110. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antenna(s) 234, modulator and / or demodulator 232, MIMO detector 236, receiver processor 238, transmitter processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein, for example, as referenced. Figure 8A , 8B As described in 8C, 9, 10 and / or 11.

[0047] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any one or more other components may perform one or more techniques associated with beamforming channel busy rate (CBR), as described in more detail elsewhere in this document. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component can execute or direct, for example Figure 11 The operation of process 1100 and / or other processes described herein. Memory 242 and 282 may store data and program code for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly, or after compilation, transformation, and / or interpretation), these one or more instructions may cause the processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 11 The operation of process 1100 and / or other processes as described herein. In some aspects, executing instructions may include: running the instructions, transforming the instructions, compiling the instructions, and / or interpreting the instructions, among other examples.

[0048] In some aspects, UE 120 includes: a unit for measuring a first CBR of a first beam group in a set of beam groups associated with UE 120; a unit for receiving from a second UE an indication of a second CBR of a second beam group associated with the second UE; and / or a unit for transmitting to the second UE a signal using one or more transmission parameters at least partially based on at least one of the first CBR or the second CBR, using beams included in the first beam group. The unit for UE 120 to perform the operations described herein may include one or more of, for example, antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, or memory 282.

[0049] In some aspects, UE 120 includes: a unit for receiving, using the beam or another beam included in the first beam group, an indication from a second UE or one or more other UEs of the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals; and / or a unit for determining a first CBR of the first beam group based at least in part on the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals.

[0050] In some aspects, UE 120 includes a unit for receiving the indication via at least one of an announcement message or a physical-side link feedback channel signal.

[0051] In some aspects, UE 120 includes: a unit for determining the one or more transmission parameters based at least in part on a first CBR or a second CBR.

[0052] In some aspects, UE 120 includes: a unit for determining the highest CBR among a first CBR and a second CBR; and / or a unit for determining the one or more transmission parameters based at least in part on the highest CBR.

[0053] In some aspects, UE 120 includes: a unit for determining a first transmission parameter included in the one or more transmission parameters based at least in part on a first CBR; and / or a unit for determining a second transmission parameter included in the one or more transmission parameters based at least in part on a second CBR.

[0054] In some aspects, UE 120 includes: a unit for receiving from a third UE an indication of a third CBR for a third beam group associated with the third UE; and / or a unit for transmitting to the third UE, using beams included in the first beam group, different signals using one or more transmission parameters at least partially based on at least one of the first CBR or the third CBR.

[0055] Although Figure 2 The boxes in the diagram are shown as different components, but the functions described above for each box can be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described for transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by or under the control of controller / processor 280.

[0056] As mentioned above, Figure 2 This is provided as an example. Other examples may be provided in conjunction with... Figure 2 The examples described are different.

[0057] Figure 3This is a schematic diagram illustrating an exemplary beamforming architecture 300 supporting beamforming for communication. In some aspects, architecture 300 can implement various aspects of wireless network 100. In some aspects, as described herein, architecture 300 can be implemented in a transmitting device (e.g., a first wireless communication device, UE, or base station) and / or a receiving device (e.g., a second wireless communication device, UE, or base station).

[0058] In summary, Figure 3 This is a schematic diagram illustrating exemplary hardware components of a wireless communication device according to certain aspects of this disclosure. The illustrated components may include those for antenna element selection and / or beamforming for wireless signal transmission. Various architectures exist for antenna element selection and phase shifting; only one example is shown here. Architecture 300 includes a modem (modulator / demodulator) 302, a digital-to-analog converter (DAC) 304, a first mixer 306, a second mixer 308, and a splitter 310. Architecture 300 also includes a plurality of first amplifiers 312, a plurality of phase shifters 314, a plurality of second amplifiers 316, and an antenna array 318 including a plurality of antenna elements 320.

[0059] Transmission lines or other waveguides, wires, traces, etc., connecting various components are shown to illustrate how signals to be transmitted can propagate between components. Reference numerals 322, 324, 326, and 328 indicate regions in architecture 300 where different types of signals propagate or are processed. Specifically, reference numeral 322 indicates the region where digital baseband signals propagate or are processed, reference numeral 324 indicates the region where analog baseband signals propagate or are processed, reference numeral 326 indicates the region where analog intermediate frequency (IF) signals propagate or are processed, and reference numeral 328 indicates the region where analog radio frequency (RF) signals propagate or are processed. The architecture also includes a local oscillator A330, a local oscillator B332, and a controller / processor 334. In some aspects, the controller / processor 334 corresponds to the above combination. Figure 2 The described base station controller / processor 240 and / or more combined Figure 2 The controller / processor 280 of the UE is described.

[0060] Each antenna element 320 may include one or more sub-elements for radiating or receiving RF signals. For example, a single antenna element 320 may include a first sub-element cross-polarized with a second sub-element, which can be used to independently transmit cross-polarized signals. Antenna elements 320 may include patch antennas, dipole antennas, or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern. The spacing between antenna elements 320 may allow signals transmitted by the antenna elements 320 at desired wavelengths to interact or interfere (e.g., to form a desired beam). For example, given a desired range of wavelengths or frequencies, the spacing may provide a quarter-wavelength, half-wavelength, or other fraction of the wavelength between adjacent antenna elements 320 to allow interaction or interference of signals transmitted by the individual antenna elements 320 within that desired range.

[0061] Modem 302 processes and generates digital baseband signals and can also control the operation of DAC 304, first mixer 306 and second mixer 308, splitter 310, first amplifier 312, phase shifter 314 and / or second amplifier 316 to transmit signals via one or more antenna elements 320. Modem 302 can process signals and control operations according to communication standards such as the wireless standards discussed herein. DAC 304 can convert digital baseband signals received from (and to be transmitted) by modem 302 into analog baseband signals. First mixer 306 uses local oscillator A 330 to upconvert the analog baseband signal to an analog IF signal within the IF. For example, first mixer 306 can mix the signal with an oscillation signal generated by local oscillator A 330 to "shift" the baseband analog signal to the IF. In some cases, some processing or filtering (not shown) may be performed at the IF. Second mixer 308 uses local oscillator B 332 to upconvert the analog IF signal to an analog RF signal. Similar to the first mixer, the second mixer 308 can mix the signal with an oscillation signal generated by the local oscillator B 332 to "shift" the IF analog signal to the RF or frequency at which the signal will be transmitted or received. The modem 302 and / or the controller / processor 334 can adjust the frequencies of the local oscillator A 330 and / or the local oscillator B 332 to generate the desired IF and / or RF frequencies and use them to facilitate the processing and transmission of signals within the desired bandwidth.

[0062] In the illustrated architecture 300, the signal up-converted by the second mixer 308 is separated or replicated into multiple signals by the splitter 310. The splitter 310 in architecture 300 separates the RF signal into multiple identical or nearly identical RF signals. In other examples, this separation can be performed for any type of signal, including baseband digital signals, baseband analog signals, or IF analog signals. Each of these signals may correspond to an antenna element 320, and the signal propagates through and is processed by amplifiers 312, 316, phase shifters 314, and / or other elements corresponding to the respective antenna element 320 to be provided to and transmitted by the corresponding antenna element 320 of the antenna array 318. In one example, the splitter 310 may be an active splitter connected to a power supply and providing some gain such that the RF signal leaving the splitter 310 is at a power level equal to or greater than the signal entering the splitter 310. In another example, splitter 310 is a passive splitter not connected to a power source, and the RF signal leaving splitter 310 can be at a lower power level than the RF signal entering splitter 310.

[0063] After being separated by splitter 310, the resulting RF signal can enter an amplifier, such as a first amplifier 312 or a phase shifter 314 corresponding to antenna element 320. The first amplifier 312 and the second amplifier 316 are shown in dashed lines because in some respects one or both may not be necessary. In some respects, both the first amplifier 312 and the second amplifier 316 are present. In some respects, neither the first amplifier 312 nor the second amplifier 316 is present. In some respects, one of the two amplifiers 312, 316 is present, while the other is absent. As an example, if splitter 310 is an active splitter, the first amplifier 312 may not be used. As a further example, if phase shifter 314 is an active phase shifter capable of providing gain, the second amplifier 316 may not be used.

[0064] Amplifiers 312 and 316 can provide a desired level of positive or negative gain. Positive gain (positive dB) can be used to increase the signal amplitude radiated by a particular antenna element 320. Negative gain (negative dB) can be used to reduce the signal amplitude of a particular antenna element and / or suppress signal radiation. Each of amplifiers 312 and 316 can be independently controlled (e.g., via modem 302 or controller / processor 334) to provide independent control over the gain of each antenna element 320. For example, modem 302 and / or controller / processor 334 may have at least one control line connected to each of splitter 310, first amplifier 312, phase shifter 314, and / or second amplifier 316, which can be used to configure the gain to provide the desired amount of gain for each component and thus the desired amount of gain for each antenna element 320.

[0065] Phase shifter 314 can provide a configurable phase shift or phase offset to the corresponding RF signal to be transmitted. Phase shifter 314 can be a passive phase shifter that is not directly connected to a power supply. Passive phase shifters may introduce some insertion loss. Second amplifier 316 can amplify the signal to compensate for the insertion loss. Phase shifter 314 can also be an active phase shifter connected to a power supply, such that an active phase shifter provides a certain amount of gain or prevents insertion loss. The configuration of each phase shifter 314 is independent, meaning that each phase shifter 314 can be independently configured to provide the desired amount of phase shift, the same amount of phase shift, or some other configuration. Modem 302 and / or controller / processor 334 may have at least one control line connected to each phase shifter 314, and it can be used to configure the phase shifter 314 to provide the desired amount of phase shift or phase offset between antenna elements 320.

[0066] In the illustrated architecture 300, the RF signal received by antenna element 320 is provided to one or more first amplifiers 356 to enhance the signal strength. The first amplifiers 356 may be connected to the same antenna array 318 (e.g., for time division duplex (TDD) operation). The first amplifiers 356 may be connected to different antenna arrays 318. The enhanced RF signal is input to one or more phase shifters 354 to provide a configurable phase shift or phase offset for the corresponding received RF signal, enabling reception via one or more Rx beams. The phase shifters 354 may be active or passive phase shifters. The configuration of the phase shifters 354 is independent, meaning that each phase shifter 354 can be independently configured to provide the desired amount of phase shift, the same amount of phase shift, or some other configuration. The modem 302 and / or controller / processor 334 may have at least one control line connected to each phase shifter 354, and may be used to configure the phase shifter 354 to provide a desired amount of phase shift or phase offset between antenna elements 320 to enable reception via one or more Rx beams.

[0067] The output of phase shifter 354 can be input to one or more second amplifiers 352 for signal amplification of the phase-shifted received RF signal. Second amplifiers 352 can be individually configured to provide a configured amount of gain. Second amplifiers 352 can be individually configured to provide a certain amount of gain to ensure that the signals input to combiner 350 have the same amplitude. Amplifiers 352 and / or 356 are shown in dashed lines because they may not be necessary in some respects. In some respects, both amplifiers 352 and 356 are present. In other respects, neither amplifier 352 nor amplifier 356 is present. In still other respects, one of amplifiers 352 and 356 is present, while the other is not.

[0068] In the illustrated architecture 300, the signal output from phase shifter 354 (via amplifier 352 when present) is combined in combiner 350. Combiner 350 in architecture 300 combines RF signals into a single signal. Combiner 350 can be a passive combiner (e.g., not connected to a power supply), which may result in some insertion loss. Combiner 350 can also be an active combiner (e.g., connected to a power supply), which can result in some signal gain. When combiner 350 is an active combiner, it can provide a different (e.g., configurable) amount of gain for each input signal, such that these input signals have the same amplitude when combined. When combiner 350 is an active combiner, combiner 350 may not require a second amplifier 352, as the active combiner can provide signal amplification.

[0069] The output of combiner 350 is input to mixers 348 and 346. Mixers 348 and 346 typically use inputs from local oscillators 372 and 370, respectively, to down-convert the received RF signal to generate an intermediate or baseband signal carrying encoded and modulated information. The outputs of mixers 348 and 346 are input to an analog-to-digital converter (ADC) 344 for conversion into a digital signal. The digital signal output from ADC 344 is input to modem 302 for baseband processing, such as decoding, deinterleaving, etc.

[0070] Architecture 300 is given by way of example only to illustrate an architecture for transmitting and / or receiving signals. In some cases, architecture 300 and / or each part of architecture 300 may be repeated multiple times within the architecture to accommodate or provide any number of RF chains, antenna elements, and / or antenna panels. Furthermore, many alternative architectures are possible and anticipated. For example, although only a single antenna array 318 is shown, two, three, or more antenna arrays may be included, each having its own corresponding amplifier, phase shifter, splitter, mixer, DAC, ADC, and / or modem, one or more of these. For example, a single UE may include two, four, or more antenna arrays for transmitting or receiving signals at different physical locations on the UE or in different directions.

[0071] Furthermore, in different implementation architectures, mixers, splitters, amplifiers, phase shifters, and other components can be located in different signal type regions (e.g., indicated by different reference numerals in figures 322, 324, 326, and 328). For example, in different examples, splitting the signal to be transmitted into multiple signals can occur at analog RF, analog IF, analog baseband, or digital baseband frequencies. Similarly, amplification and / or phase shifting can also occur at different frequencies. For example, in some aspects, one or more of splitters 310, amplifiers 312, 316, or phase shifters 314 can be located between DAC 304 and the first mixer 306 or between the first mixer 306 and the second mixer 308. In one example, the functionality of one or more components can be combined into a single component. For example, phase shifter 314 can perform amplification to include or replace the first amplifier 312 and / or the second amplifier 316. As another example, phase shifting can be implemented by the second mixer 308 to eliminate the need for a separate phase shifter 314. This technique is sometimes referred to as local oscillator (LO) phase shifting. In some aspects of this configuration, there can be multiple IF-to-RF mixers within the second mixer 308 (e.g., for each antenna element chain), and the local oscillator B 332 can provide a different local oscillator signal (with different phase shifts) to each IF-to-RF mixer.

[0072] Modem 302 and / or controller / processor 334 can control one or more of other components 304 to 372 to select one or more antenna elements 320 and / or form a beam for transmitting one or more signals. For example, antenna elements 320 can be individually selected or not selected for signal (or multiple signals) transmission by controlling the amplitude of one or more corresponding amplifiers such as first amplifier 312 and / or second amplifier 316. Beamforming involves generating a beam using multiple signals on different antenna elements, wherein one or more or all of the multiple signals are phase-shifted relative to each other. The formed beam can carry reference signals or information from the physical layer or higher. As each of the multiple signals is radiated from its respective antenna element 320, the radiated signals interact, interfere (constructive and destructive interference), and amplify each other to form the resulting beam. Shape (such as amplitude, width, and / or the presence of sidelobes) and orientation (such as the angle of the beam relative to the surface of the antenna array 318) can be dynamically controlled by modifying the phase shift or phase offset of the plurality of signals relative to each other, provided by the phase shifter 314 and the amplitude provided by the amplifiers 312, 316. The controller / processor 334 may be partially or wholly located within one or more other components of the architecture 300. For example, in some aspects, the controller / processor 334 may be located within the modem 302.

[0073] As mentioned above, Figure 3 This is provided as an example. Other examples may be provided in conjunction with... Figure 3 The examples described are different.

[0074] Figure 4 This is a schematic diagram illustrating example 400 of side-link communication. (See diagram below.) Figure 4 As shown, the first UE 405-1 can communicate with the second UE 405-2 (and one or more other UEs 405) via one or more sidelink channels 410. UEs 405-1 and 405-2 can communicate using one or more sidelink channels 410 for P2P communication, D2D communication, V2X communication (e.g., which may include V2V communication, V2I communication, vehicle-to-pedestrian (V2P) communication, mesh networking, etc.), etc. In some aspects, UE 405 (e.g., UE 405-1 and / or UE 405-2) may correspond to one or more other UEs described in other parts of this document, such as UE 120. In some aspects, one or more sidelink channels 410 may use a PC5 interface and / or may operate in a high-frequency band (e.g., the 5.9 GHz band). Additionally or alternatively, UE 405 may use Global Navigation Satellite System (GNSS) timing to synchronize the timing of transmission time intervals (TTIs) (e.g., frames, subframes, time slots, symbols, etc.).

[0075] like Figure 4As further shown, one or more sidelink channels 410 may include a Physical Sidelink Control Channel (PSCCH) 415, a Physical Sidelink Shared Channel (PSSCH) 420, and / or a Physical Sidelink Feedback Channel (PSFCH) 425. PSCCH 415 can be used to transmit control information, similar to a Physical Downlink Control Channel (PDCCH) and / or a Physical Uplink Control Channel (PUCCH) for cellular communication with base station 110 via an access link or access channel. PSSCH 420 can be used to transmit data, similar to a Physical Downlink Shared Channel (PDSCH) and / or a Physical Uplink Shared Channel (PUSCH) for cellular communication with base station 110 via an access link or access channel. For example, PSCCH 415 may carry sidelink control information (SCI) 430, which may indicate various control information for sidelink communication, such as one or more resources (e.g., time resources, frequency resources, spatial resources, etc.) in the case where a transport block (TB) 435 may be carried on PSSCH 420. TB 435 may include data. PSFCH 425 may be used to communicate with the side link feedback 440, such as Hybrid Automatic Repeat Request (HARQ) feedback (e.g., ACK / NACK information), Transmit Power Control (TPC), Schedule Request (SR), etc.

[0076] In some aspects, one or more sidelink channels 410 may use resource pools. For example, a scheduling assignment (e.g., included in SCI 430) may be transmitted in a subchannel using a specific resource block (RB) spanning a time period. In some aspects, data transmissions associated with a scheduling assignment (e.g., data transmissions on PSSCH 420) may occupy adjacent RBs in the same subframe as the scheduling assignment (e.g., using frequency division multiplexing). In some aspects, the scheduling assignment and associated data transmissions are not transmitted on adjacent RBs.

[0077] In some aspects, UE 405 may operate using a transmission mode in which resource selection and / or scheduling is performed by UE 405 (e.g., not base station 110). In some aspects, UE 405 may perform resource selection and / or scheduling by sensing channel availability for transmission. For example, UE 405 may measure Received Signal Strength Indicator (RSSI) parameters (e.g., sidelink RSSI (S-RSSI) parameters) associated with various sidelink channels, may measure Reference Signal Received Power (RSRP) parameters (e.g., PSSCH-RSRP parameters) associated with various sidelink channels, may measure Reference Signal Received Quality (RSRQ) parameters (e.g., PSSCH-RSRQ parameters) associated with various sidelink channels, and so on, and may select the channel for transmission for sidelink communication based at least in part on (one or more) of these measurements.

[0078] Alternatively, UE 405 may use SCI 430 received in PSCCH 415 to perform resource selection and / or scheduling, SCI 430 indicating occupied resources, channel parameters, etc. Alternatively, UE 405 may perform resource selection and / or scheduling by determining the Channel Busy Rate (CBR) associated with each side link channel, where the CBR may be used for rate control (e.g., by indicating the maximum number of resource blocks that UE 405 can use for a particular set of subframes).

[0079] In a transport mode where resource selection and / or scheduling is performed by UE 405, UE 405 can generate a sidelink grant and can send the grant in SCI 430. The sidelink grant can indicate one or more parameters (e.g., transport parameters) to be used for an upcoming sidelink transport, such as one or more resource blocks to be used for an upcoming sidelink transport (e.g., for TB435) on PSSCH 420, one or more subframes to be used for the upcoming sidelink transport, modulation and coding scheme (MCS) to be used for the upcoming sidelink transport, etc. In some aspects, UE 405 can generate a sidelink grant indicating one or more parameters for semi-persistent scheduling (SPS), such as the periodicity of the sidelink transport. Alternatively or concurrently, UE 405 can generate a sidelink grant for event-driven scheduling (such as for on-demand sidelink messages).

[0080] As mentioned above, Figure 4 This is provided as an example. Other examples may be provided in conjunction with... Figure 4 The examples described are different.

[0081] Figure 5This is a schematic diagram illustrating example 500 of sidelink communication and access link communication. (Example 500) Figure 5 As shown, the transmitter (Tx) / receiver (Rx) UE 505 and the Rx / Tx UE 510 can communicate with each other via a side link, as described above. Figure 4 As described. Further, in some sidelink modes, base station 110 may communicate with Tx / Rx UE 505 via a first access link. Alternatively, in some sidelink modes, base station 110 may communicate with Rx / Tx UE 510 via a second access link. Tx / Rx UE 505 and / or Rx / Tx UE 510 may correspond to one or more UEs described in other parts of this document, such as... Figure 1 UE 120. Therefore, the direct link between UE 120 (e.g., via the PC5 interface) can be referred to as a sidelink, and the direct link between base station 110 and UE 120 (e.g., via the Uu interface) can be referred to as an access link. Sidelink communication can be sent via the sidelink, and access link communication can be sent via the access link. Access link communication can be downlink communication (from base station 110 to UE 120) or uplink communication (from UE 120 to base station 110).

[0082] As mentioned above, Figure 5 This is provided as an example. Other examples may be provided in conjunction with... Figure 5 The examples described are different.

[0083] Figure 6 This is a schematic diagram illustrating example 600 of a beam group. (See attached diagram.) Figure 6 As shown, UE 605 can use different beams associated with different spatial directions for communication (e.g., transmission and / or reception). Beams can be associated with different shapes (such as amplitude, width, and / or the presence of sidelobes) and orientations (such as the angle of the beam relative to the surface of the antenna array), as combined above. Figure 3 As described. For example, such as Figure 6 As shown, UE 605 is capable of forming wide and / or narrow beams. A wide beam can be associated with a relatively large width. In some aspects, a wide beam can be a beam that has not yet been refined and / or a beam associated with low beamforming gain, among other examples. A narrow beam can be associated with a relatively narrow width. For example, a narrow beam can be a beam that has already been refined and / or a beam associated with high beamforming gain, among other examples. Although... Figure 6 The narrow beams shown have similar widths, but various levels of narrow beams with different widths can exist (e.g., different levels of beam refinement).

[0084] like Figure 6As shown, UE 605 is capable of forming beams in different spatial directions. UE 605 can group or associate beams with similar spatial orientations (e.g., similar angles relative to the surface of the antenna array) into beam groups. A beam group may include one or more beams. In some aspects, a beam group may include one or more wide beams and / or one or more narrow beams. For example, as shown by reference numeral 610, a first beam group of UE 605 (e.g., beam group 1) may include three narrow beams and one wide beam, each having a similar spatial orientation (e.g., towards the east of UE 605). As shown by reference numeral 615, a second beam group of UE 605 (e.g., beam group 2) may include three narrow beams and one wide beam, each having a similar spatial orientation (e.g., towards the north of UE 605). As shown by reference numeral 620 in the accompanying drawings, the third beam group of UE 605 (e.g., beam group 3) may include three narrow beams and one wide beam, each having a similar spatial orientation (e.g., towards the west of UE 605). As shown by reference numeral 625 in the accompanying drawings, the fourth beam group of UE 605 (e.g., beam group 4) may include three narrow beams and one wide beam, each having a similar spatial orientation (e.g., towards the south of UE 605). Figure 6 The beam groups shown are provided as examples. As mentioned above, beam groups may include one or more beams, only (one or more) narrow beams, only (one or more) wide beams, and / or both wide and narrow beams, as well as other examples.

[0085] As mentioned above, Figure 6 This is provided as an example. Other examples may be provided in conjunction with... Figure 6 The examples described are different.

[0086] Figure 7 This is a schematic diagram illustrating example 700 of a side-link communication network. (See diagram below.) Figure 7 As shown, a sidelink communication network may include UE 705. UE 705 may be a transmitting (Tx) UE. As used herein, "transmitting UE" or "Tx UE" may refer to a UE used in conjunction with the described examples for transmitting sidelink communication. Similarly, as used herein, "receiving UE" or "Rx UE" may refer to a UE used in conjunction with the described examples for receiving sidelink communication. For example, in other scenarios, a "Tx UE" may receive communication in a manner similar to that of an Rx UE as described herein. Similarly, an "Rx UE" may transmit communication in a manner similar to that of a Tx UE as described herein.

[0087] like Figure 7As shown, the sidelink communication network may include a first portion indicated by reference numeral 710 and a second portion indicated by reference numeral 715. The first portion may include UE 720, UE 725, UE 730, UE 735, and UE 740. The second portion may include UE 745. UE 705 is capable of transmitting sidelink communication to UE 730 in the first portion of the sidelink communication network using a first beam (e.g., B1), as indicated by reference numeral 755. Alternatively, UE 705 may also transmit sidelink communication to UE 745 in the second portion of the sidelink communication network using a second beam (e.g., B2), as indicated by reference numeral 750.

[0088] Typically, if a channel used for sidelink communication is busy, the sidelink communication may cause interference or collisions with another transmission on that channel. Therefore, when a Tx UE (e.g., UE 705) needs to send sidelink communication to an Rx UE (e.g., UE 730 and / or UE 745), the Tx UE should consider how busy the channel is when determining when / whether to send sidelink communication on the sidelink channel. To achieve this, the Tx UE can be configured to monitor the CBR associated with the sidelink channel. The CBR is a measure of how busy the channel is and therefore indicates the probability of interference or collisions with another transmission on the channel. For example, the CBR can be approximately equal to the amount of resources detected by the UE being used on the channel divided by the total number of resources available on the channel. A relatively high CBR may indicate that the channel is being used frequently for transmissions, meaning the probability of interference or collisions is relatively high. A relatively low CBR may indicate that the channel is not being used frequently, meaning the probability of interference or collisions is relatively low.

[0089] Channel beamforming (CBR) can be defined by wireless communication standards such as 3GPP specifications or otherwise fixed. However, in existing wireless communication systems where CBR-based technologies have been implemented (such as LTE V2X systems), CBR is defined but the concept of beamforming is not addressed. Therefore, in systems using beamforming (e.g., NR systems using millimeter-wave (mmW) communication), conventional methods using CBR may be insufficient for evaluating channel usage.

[0090] For example, as described above, UE 705 can transmit to either the first part of the sidelink communication network or the second part of the wireless communication network. Figure 7As shown, the first part of the sidelink communication network may be congested and includes multiple UEs transmitting on the channel. For example, as indicated by reference numeral 760, UE 720 may transmit sidelink communication to UE 735. Similarly, as indicated by reference numeral 765, UE 725 may transmit sidelink communication to UE 740. Therefore, the first part of the sidelink communication network may be relatively busy and may have a relatively high probability of interference or collision. Conversely, the second part of the sidelink communication network may only include UE 745 and may not have any other UEs transmitting on the sidelink channel. Therefore, the second part of the sidelink communication network may have a relatively low probability of interference or collision.

[0091] However, as described above, UE 705 may not be able to determine the different CBRs of the first beam (e.g., B1 sent to the first part of the sidelink communication network) and the second beam (e.g., B2 sent to the second part of the sidelink communication network) to distinguish between the busy portion (e.g., the first part of the sidelink communication network) and the idle portion (e.g., the second part of the sidelink communication network). As a result, the communication performance of UE 705 may be degraded because UE 705 may use transmission parameters that cause interference or conflict with other communications (e.g., in the busy portion of the sidelink communication network) or are not optimized (e.g., for the idle portion of the sidelink communication network).

[0092] Some of the techniques and apparatus described herein implement beamforming CBR. For example, a Tx UE can use a beam to be used for transmitting sidelink communication to measure a first CBR (e.g., Tx CBR). An Rx UE can use a beam to be used for receiving sidelink communication to measure a second CBR (e.g., Rx CBR). The Rx UE can send an indication of the Rx CBR to the Tx UE. The Tx UE can use the Tx CBR and / or the Rx CBR to determine one or more transmission parameters for sidelink communication. Transmission parameters may include: the number of HARQ retransmissions for sidelink communication, the number of subchannels the Tx UE will use in a time slot, the modulation and coding scheme (MCS) to be used for sidelink communication, and / or the channel occupancy rate (CR) limit of the Tx UE, and other examples. The Tx UE can use one or more determined transmission parameters to transmit sidelink communication to the Rx UE.

[0093] In some respects, the Tx UE can use one or more beams included in the first beam group to measure the Tx CBR of the first beam group. The first beam group may include beams to be used for transmitting side-link communication. Because the beams(s) included in the beam group have similar spatial orientations (e.g., as combined above), Figure 6 Therefore, a beam group should have the same CBR for each beam included in that beam group. Thus, a Tx UE can measure the Tx CBR of a beam group that includes beams to be used for transmit-side crosslink communication. Similarly, an Rx UE can measure the Rx CBR of a beam group that includes beams to be used for receive-side crosslink communication.

[0094] As a result, the Tx UE can utilize beamforming CBR, which can be used to determine transmission parameters for sidelink communication. This allows the Tx UE to identify when it is transmitting to a busy part of the network (e.g., with a relatively high CBR) and use transmission parameters designed to reduce the likelihood or probability of interference or collisions with other transmissions. Similarly, the Tx UE can identify when it is transmitting to an idle part of the network (e.g., with a relatively low CBR) and use transmission parameters designed to improve the communication performance of sidelink communication.

[0095] Figures 8A-8C This is a schematic diagram illustrating an example 800 associated with a beamforming CBR according to various aspects of this disclosure. Figures 8A-8C As shown, Example 800 includes communication between one or more UEs. In some aspects, the UEs may be included in a wireless network, such as wireless network 100 or more. Figure 7 The described side-link communication network. The UE can communicate via the wireless side-link, as described above. Figure 4 And / or as described in 5.

[0096] like Figure 8A As shown, the Tx UE 805 is capable of using the first beam (e.g., as...). Figure 8A As shown in B1), it transmits sidelink communication (e.g., signals). The Tx UE 805 can measure the first beam and / or the CBR of the beam group including the first beam to avoid interference at nearby UEs (such as in...). Figure 8A The collision or interference occurs at UE 815 (as shown). For example, the Tx UE can use the first beam to measure channel usage to determine the channel usage level (e.g., CBR) in the spatial direction associated with the first beam.

[0097] For example, as shown by reference numeral 820 in the attached figure, UE 810 may be sending sidelink communication to UE 815. The sidelink communication sent by UE 810 can be received by UE 815. The sidelink communication may be a PSCCH signal (e.g., carrying SCI and / or resource reservation information) or a PSSCH signal. UE 815 can receive and / or decode the sidelink communication sent by UE 810.

[0098] As shown by reference numeral 825, UE 815 may send feedback communication (e.g., ACK / NACK feedback) to UE 810 based on receiving sidelink communication on the PSFCH. The feedback communication may include one or more fields (e.g., one or more bits) to indicate the amount of resources (e.g., the number of subchannels) used by the sidelink communication. For example, one or more fields may be added to the feedback communication (e.g., in addition to ACK / NACK feedback) to indicate the amount of resources (e.g., the number of subchannels) used by the feedback and the sidelink communication. Alternatively or additionally, UE 815 may send or broadcast an announcement message (e.g., a receive (Rx) announcement) indicating resource reservations for one or more upcoming sidelink communications. For example, the sidelink communication from UE 810 may carry an SCI that reserves resources (e.g., one or more subchannels) for the upcoming sidelink communication. UE 815 may send an announcement message indicating the amount of resources (e.g., the number of subchannels) used for the upcoming sidelink communication.

[0099] As indicated by reference numeral 830 in the attached figure, Tx UE 805 may receive feedback communication and / or announcement messages from UE 815 using a first beam (and / or one or more other beams included in a beam group that includes the first beam). For example, as Figure 8A As shown, feedback communication and / or announcement messages can be sent to UE 810 in the spatial direction, enabling Tx UE 805 to receive feedback communication and / or announcement messages using the first beam. This allows Tx UE 805 to identify channel usage in the spatial direction of the first beam, as described in more detail below.

[0100] As shown by reference numeral 835 in the accompanying drawings, Tx UE 805 can measure the first CBR (e.g., Tx CBR) of a first beam and / or a beam group including the first beam (e.g., a first beam group). For example, Tx UE 805 can identify the amount of resources (e.g., the number of sub-channels) used or reserved by UE 815 based at least in part on feedback communication and / or announcement messages. Tx UE 805 can measure the first CBR on a measurement window. For example, Tx UE 805 can monitor feedback communication and / or announcement messages using the first beam and / or using beams included in the first beam group. Tx UE 805 can determine the amount of resources (e.g., the number of sub-channels) in which sidelink communication (e.g., PSSCH transmission) exists, as calculated by Tx UE 805 based at least in part on feedback communication and / or announcement messages received by Tx UE 805 on the first beam or beams included in the first beam group on a measurement window. Tx UE 805 can determine the first CBR based at least in part on the amount of resources (e.g., the number of sub-channels) identified during the measurement window.

[0101] As a result, Tx UE 805 is able to determine channel usage for nearby Rx UEs (such as UE 815). For example, if Tx UE 805 determines a relatively high CBR (First CBR), the first CBR can indicate a busy channel (e.g., a large number of UEs receiving communication in the vicinity of Tx UE 805 (in the spatial direction of the first beam). If Tx UE 805 determines a relatively low CBR (First CBR), the first CBR can indicate an idle channel (e.g., a small number of UEs receiving communication in the vicinity of Tx UE 805 (in the spatial direction of the first beam)).

[0102] like Figure 8B As shown, Rx UE 840 can be the intended recipient of sidelink communication from Tx UE 805 (e.g., as described above, it will use the first beam to transmit). For example, Rx UE 840 may intend to use the second beam (e.g., as...). Figure 8B B2) shown in the diagram receives crosslink communication from the Tx UE 805. The second beam may be included in the beam group (e.g., the second beam group) of the Rx UE 840.

[0103] The Rx UE 840 can be configured to monitor channels in the spatial direction of a second beam and / or a second beam group. For example, such as Figure 8BOne or more UEs, such as UE 845 shown, may be transmitting in the spatial direction of the second beam and / or second beam group. For example, as indicated by reference numeral 850, UE 845 may be transmitting lateral link communication in the spatial direction of the second beam and / or second beam group. This lateral link communication may be a PSCCH signal (e.g., carrying SCI) or a PSSCH signal. The lateral link communication may be intended to be transmitted to another Rx UE ( Figure 8B (not shown in the image).

[0104] As indicated by reference numeral 855, the Rx UE 840 may use the second beam and / or another beam included in the second beam group of the Rx UE 840 to receive, detect, and / or measure sidelink communication. For example, the Rx UE 840 may use the second beam and / or another beam included in the second beam group to measure the RSSI of the sidelink communication (e.g., sidelink RSSI (SL-RSSI)). The SL-RSSI may be defined by a wireless communication standard (such as a 3GPP specification). For example, the SL-RSSI may be a linear average of the total received power observed in the configured sub-channels of the OFDM symbols in the time slots configured for the PSCCH and PSSCH (e.g., starting from the second OFDM symbol of that time slot).

[0105] As indicated by reference numeral 860 in the accompanying drawings, the Rx UE 840 can measure the second CBR (e.g., Rx CBR) of the second beam and / or the second beam group. For example, the Rx UE 840 can use the second beam and / or the second beam group to monitor sidelink communication to measure the SL-RSSI of the sidelink communication (e.g., in a manner similar to that described above). The Rx UE 840 can measure the second CBR based at least in part on the number of subchannels associated with SL-RSSI values ​​that meet a threshold on the measurement window. The Rx UE 840 can measure the second CBR of the second beam (e.g., using the measured SL-RSSI on the second beam) and / or the second beam group (e.g., using the measured SL-RSSI on any beam included in the second beam group).

[0106] As a result, Rx UE 840 is able to determine channel usage in the receive direction (e.g., in the spatial direction of the second beam). For example, if Rx UE 840 determines a relatively high CBR for the second CBR, the second CBR can indicate that the channel is busy in the receive direction (e.g., a large number of UEs are transmitting in the spatial direction of the second beam). If Rx UE 840 determines a relatively low CBR for the second CBR, the second CBR can indicate that the channel is idle in the receive direction (e.g., a small number of UEs are transmitting in the spatial direction of the second beam).

[0107] As indicated by reference numeral 865 in the accompanying drawings, Rx UE 840 can transmit, and Tx UE 805 can receive, an indication of a second CBR (e.g., Rx CBR) for the second beam and / or the second beam group. By transmitting the indication of the second CBR, Tx UE 805 is able to identify the channel usage detected at Rx UE 840 (e.g., the second CBR) and determine, at least in part, the transmission parameters for sidelink communication to Rx UE 840 based on the channel usage at Rx UE 840, as described in more detail below.

[0108] like Figure 8C As shown by reference numeral 870, Tx UE 805 can determine one or more transmission parameters for sidelink communication to Rx UE 840, at least in part, based on a first CBR and / or a second CBR. Transmission parameters may include the number of HARQ retransmissions for sidelink communication, the number of subchannels to be used by Tx UE 805 (e.g., in a time slot), the MCS for sidelink communication, and / or CR limits (e.g., for Tx UE 805 or Rx UE 840), etc.

[0109] Tx UE 805 may use only the first CBR, only the second CBR, and / or both the first and second CBRs to determine one or more transmission parameters. For example, in some aspects, Tx UE 805 may determine the maximum CBR between the first and second CBRs (e.g., the CBR with the higher value). Tx UE 805 may use the maximum CBR to determine one or more transmission parameters, such as the number of HARQ retransmissions for lateral link communication, the number of subchannels to be used by Tx UE 805 (e.g., in a time slot), and / or the MCS for lateral link communication. In some aspects, Tx UE 805 may use the first CBR to determine a first transmission parameter (e.g., a first one or more transmission parameters) and use the second CBR to determine a second transmission parameter (e.g., a second one or more transmission parameters). For example, Tx UE 805 can use a first CBR (e.g., Tx CBR) to determine the CR limit for Tx UE 805, and can use a second CBR (e.g., Rx CBR) to determine the CR limit for Rx UE 840.

[0110] As shown by reference numeral 875 in the accompanying drawings, Tx UE 805 can transmit sidelink communication to Rx UE 840 using one or more transmission parameters (e.g., one or more transmission parameters determined by Tx UE 805 as described above). Tx UE 805 can use a first beam (e.g., B1) to transmit the sidelink communication. Rx UE 840 can use a second beam (e.g., B2) to receive the sidelink communication. As a result, Tx UE 805 can ensure that the sidelink communication has a low probability or likelihood of causing collisions and / or interference (e.g., if the first CBR and / or the second CBR are relatively high, indicating a busy channel) by using a lower number of HARQ retransmissions, a lower number of subchannels, a lower order MCS, and / or a lower CR limit, etc. Similarly, TxUE 805 can improve the communication performance of sidelink communication by using more HARQ retransmissions, more sub-channels, higher-order MCS and / or larger CR limits (e.g., if the first CBR and / or the second CBR are relatively low, indicating an idle channel).

[0111] Furthermore, by using beamforming CBR as described above, Tx UE 805 can identify when it is transmitting to a busy part of the network (e.g., with a relatively high CBR) and use transmission parameters that reduce the likelihood or probability of interference or collision with other transmissions. Similarly, Tx UE 805 can identify when it is transmitting to an idle part of the network (e.g., with a relatively low CBR) and use transmission parameters that improve the communication performance of sidelink communication.

[0112] As mentioned above, Figures 8A-8C This is provided as an example. Other examples may be provided in conjunction with [the relevant information]. Figures 8A-8C The examples described are different.

[0113] Figure 9 These are schematic diagrams illustrating examples 900 and 905 related to beamforming CBRs according to various aspects of this disclosure. Figure 9 As shown, Examples 900 and 905 include communication between one or more UEs. In some aspects, the UEs may be included in a wireless network, such as wireless network 100 or more. Figure 7 The described side-link communication network. The UE can communicate via the wireless side-link, as described above. Figure 4 And / or as described in 5.

[0114] Examples 900 and 905 describe Tx UEs (such as Tx UE 910) that use beamforming CBRs in conjunction with the above. Figures 8A-8CExamples of similar (or identical) methods for determining the sending parameters. Figure 9 The example shown illustrates a situation where relying solely on Tx CBR or Rx CBR may not be sufficient.

[0115] like Figure 9 As shown in Example 900, Tx UE 910 may intend to send (e.g., using the first beam, B1) sidelink communication to Rx UE 915. Rx UE 915 may intend to receive sidelink communication using the second beam (e.g., B2). Figure 9 As shown, UE 920 and UE 925 can communicate in the vicinity of Rx UE 915. For example, as indicated by reference numeral 930, UE 920 can send sidelink communication to UE 925. UE 925 can receive sidelink communication.

[0116] As shown by reference numeral 935 in the attached figure, UE 925 may send feedback communication and / or notification messages to UE 920, indicating the amount of resources (e.g., number of sub-channels) that UE 925 uses to receive sidelink communication (or upcoming sidelink communication), as described above. Figures 8A-8C As described. However, as indicated by reference numeral 940 in the attached figure, Tx UE 910 may be outside the communication range of UE 925. Therefore, Tx UE 910 may not receive feedback communications and / or notification messages sent by UE 925.

[0117] As a result, when measuring the Tx CBR of the first beam (or the beam group including the first beam), Tx UE 910 may not consider the sub-channels used by UE 920 and / or UE 925 for side link communication, as shown by reference numeral 930. Therefore, if Tx UE 910 relies solely on the Tx CBR to determine one or more transmission parameters for side link communication to Rx UE 915, Tx UE 910 may cause interference and / or collisions at Rx UE 915 due to the failure to consider the sub-channels used by UE 920 and / or UE 925 for side link communication (shown by reference numeral 930).

[0118] However, as shown by reference numeral 945, the Rx UE 915 can measure the Rx CBR of the second beam (or the beam group including the second beam) by measuring the RSSI (e.g., SL-RSSI) of the side link communication shown by reference numeral 930 using the second beam (or another beam in the beam group including the second beam), as described above. Figures 8A-8CAs described, Rx UE 915 can send an indication to Tx UE 910 of the Rx CBR measured for the second beam. As a result, when determining the transmission parameters(s) used for sidelink communication to Rx UE 915, Tx UE 910 can consider the sub-channels used by UE 920 and / or 925 for sidelink communication, as indicated by reference numeral 930. This can reduce the likelihood or probability of interference and / or collisions (e.g., interference and / or collisions that might occur if Tx UE 910 relies solely on the Tx CBR) causing sidelink communication to Rx UE 915.

[0119] like Figure 9 As shown in Example 905, Tx UE 910 may intend to send (e.g., using the first beam, B1) sidelink communication to Rx UE 915. Rx UE 915 may intend to receive sidelink communication using the second beam (e.g., B2). Figure 9 As shown, UE 920 and UE 925 can communicate near Tx UE 910. For example, as indicated by reference numeral 950, UE 920 can send sidelink communication to UE 925. UE 925 can receive sidelink communication.

[0120] As shown by reference numeral 955 in the attached figure, UE 925 may send feedback communication and / or notification messages to UE 920, indicating the amount of resources (e.g., number of sub-channels) that UE 925 uses to receive sidelink communication (or upcoming sidelink communication), as described above. Figures 8A-8C As described above, the Tx UE 910 can use the first beam (or another beam included in a beam group that includes the first beam) to receive feedback communications and / or announcement messages to measure the Tx CBR, as described above. Figures 8A-8C As described.

[0121] As indicated by reference numeral 960, Rx UE 915 may be outside the communication range of UE 920. Consequently, when measuring the Rx CBR of the second beam (and / or the beam group including the second beam), Rx UE 915 may not measure that sidelink communication (indicated by reference numeral 950). As a result, as indicated by reference numeral 965, because Rx UE 915 is unable to measure the sidelink communication transmitted by UE 920 (indicated by reference numeral 950), Rx UE 915 may report a low Rx CBR (e.g., approximately or close to zero) for the second beam (and / or the beam group including the second beam).

[0122] Therefore, if Tx UE 910 relies solely on the Rx CBR reported by Rx UE 915 to determine one or more transmission parameters for sidelink communication to Rx UE 915, Tx UE 910 may cause interference and / or collisions at UE 925 because it does not take into account the sub-channels (shown by reference numeral 950) used by UE 920 and / or UE 925 for sidelink communication. However, as described above, it is possible for Tx UE 910 to rely on the Tx CBR to consider the sub-channels (shown by reference numeral 950) used by UE 920 and / or 925 for sidelink communication. Therefore, the transmission parameters (one or more) for sidelink communication to Rx UE 915 (e.g., determined by Tx UE 910, as described above) are determined by Tx UE 910 in conjunction with the above. Figures 8A-8C The described sub-channels (shown by reference numeral 950) used by UE 920 and / or UE 925 for sidelink communication can be considered. As a result, the likelihood or probability of interference and / or collisions caused by sidelink communication to Rx UE 915 (which could happen if Tx UE 910 relies solely on Rx CBR) can be reduced.

[0123] As mentioned above, Figure 9 This is provided as an example. Other examples may be provided in conjunction with... Figure 9 The examples described are different.

[0124] Figure 10 This is a schematic diagram illustrating an example 1000 associated with a beamforming CBR according to various aspects of this disclosure. Figure 10 As shown, Example 1000 includes communication between one or more UEs. In some aspects, the UEs may be included in a wireless network, such as wireless network 100 or more. Figure 7 The described side-link communication network. The UE can communicate via the wireless side-link, as described above. Figure 4 And / or as described in 5.

[0125] like Figure 10 As shown, Tx UE 1005 can use a first beam (e.g., B1) and / or a first beam group including the first beam to communicate with Rx UE 1010 and Rx UE 1015. Rx UE 1010 can use a second beam (e.g., B2) and / or a second beam group including the second beam to receive-side hop-link communication from Tx UE 1005. Rx UE 1015 can use a third beam (e.g., B3) and / or a third beam group including the third beam to receive-side hop-link communication from Tx UE 1005.

[0126] As shown by reference numeral 1020 in the attached figure, the Tx UE 1005 can measure the first CBR (e.g., Tx CBR) of the first beam and / or the first beam group. The Tx UE 1005 can be combined with the above. Figures 8A-8C The first CBR is measured in a similar (or identical) manner to that described in 9. As indicated by reference numeral 1025, the Rx UE 1010 may send an indication to the Tx UE 1005 of the second CBR (e.g., the Rx CBR) of the second beam and / or the second beam group. For example, the Rx UE 1010 may combine the above with... Figures 8A-8C The second CBR is measured in a similar (or identical) manner as described in 9. As indicated by reference numeral 1030, the Rx UE 1015 can send an indication to the Tx UE 1005 of the third CBR (e.g., the Rx CBR) of the third beam and / or third beam group. For example, the Rx UE 1015 can use a method combined with the above... Figures 8A-8C The third CBR shall be measured in a similar (or identical) manner as described in 9.

[0127] As shown by reference numeral 1035 in the attached figure, Tx UE 1005 may determine a first set of one or more transmission parameters for sidelink communication to Rx UE 1010 based at least in part on a first CBR (e.g., Tx CBR) and / or a second CBR (e.g., Rx CBR reported by Rx UE 1010). For example, Tx UE 1005 may combine the above with... Figures 8A-8C The first set of one or more transmission parameters for side link communication to Rx UE 1010 is determined in a similar (or identical) manner to and / or as described in 9.

[0128] As shown by reference numeral 1040 in the attached figure, Tx UE 1005 may determine a second set of one or more transmission parameters for sidelink communication to Rx UE 1015 based at least in part on a first CBR (e.g., Tx CBR) and / or a second CBR (e.g., Rx CBR reported by Rx UE 1015). For example, Tx UE 1005 may combine the above with... Figures 8A-8C A second set of one or more transmission parameters for side link communication to Rx UE 1015 may be determined in a similar (or identical) manner as described in 9.

[0129] As shown by reference numeral 1045 in the attached figure, Tx UE 1005 can send sidelink communication to Rx UE 1010 using a first set of one or more transmission parameters. As a result, the sidelink communication to Rx UE 1010 can take into account the Tx CBR (e.g., the Tx CBR of the first beam and / or the first beam group) measured at Tx UE 1005 and the Rx CBR (e.g., the Rx CBR of the second beam and / or the second beam group) measured at Rx UE 1010.

[0130] As shown by reference numeral 1050 in the attached figure, Tx UE 1005 can send sidelink communication to Rx UE 1015 using a second combination of one or more transmission parameters. As a result, the sidelink communication to Rx UE 1015 can take into account the Tx CBR measured at Tx UE 1005 (e.g., the Tx CBR of the first beam and / or the first beam group) and the Rx CBR measured at Rx UE 1015 (e.g., the Rx CBR of the third beam and / or the third beam group). Therefore, Tx UE 1005 can be made able to distinguish between channel usage detected at Rx UE 1010 and channel usage detected at Rx UE 1015, while also taking into account the channel usage detected at Tx UE 1005. This can improve communication performance to the side link communication of Rx UE 1010 (shown by reference numeral 1045) and / or to the side link communication of Rx UE 1015 (shown by reference numeral 1050).

[0131] Figure 11 This is a schematic diagram illustrating, for example, an example process 1100 performed by a UE according to various aspects of this disclosure. Example process 1100 is an example in which a UE (e.g., UE 120, Tx UE 805, Tx UE 910 and / or Tx UE 1005) performs operations associated with beamforming CBR.

[0132] like Figure 11 As shown, in some aspects, process 1100 may include: measuring a first CBR (block 1110) for a first beam group in a set of beam groups associated with the UE. For example, as described above, the UE (e.g., using...) Figure 12 The CBR measurement component 1208 described herein can measure the first CBR of the first beam group in the set of beam groups associated with the UE.

[0133] like Figure 11As further shown, in some aspects, process 1100 may include: receiving from the second UE an indication of a second CBR for a second beam group associated with the second UE (block 1120). For example, as described above, the UE (e.g., using...) Figure 12 The receiving component 1202 shown can receive an indication of the second CBR for the second beam group associated with the second UE from the second UE.

[0134] like Figure 11 As further shown, in some aspects, process 1100 may include: transmitting a signal to a second UE using a beam included in the first beam group, employing one or more transmission parameters at least partially based on at least one of the first CBR or the second CBR (block 1130). For example, as described above, the UE (e.g., using...) Figure 12 The transmitting component 1204 shown can use the beams included in the first beam group to transmit signals to the second UE using one or more transmission parameters based at least in part on the first CBR or the second CBR.

[0135] Process 1100 may include additional aspects, such as any single aspect and / or any combination of aspects described below and / or in conjunction with one or more other process descriptions described in other parts of this document.

[0136] In a first aspect, measuring the first CBR of the first beam group includes: using the beam or another beam included in the first beam group to receive from the second UE or one or more other UEs an indication of the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals; and determining the first CBR of the first beam group based at least in part on the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals.

[0137] In the second aspect, receiving an indication of the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals, either alone or in combination with the first aspect, includes receiving the indication via at least one of an announcement message or a physical-side walkway feedback channel signal.

[0138] In a third aspect, either alone or in combination with one or more of the first and second aspects, the second CBR is at least partially based on measurements of physical-side crosslink shared channel signals or physical-side crosslink control channel signals performed by the second UE using one or more beams included in the second beam group.

[0139] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, the second beam group includes a receiving beam that the second UE will use to receive the signal from the UE.

[0140] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, process 1100 includes: determining the one or more transmission parameters based at least in part on at least one of the first CBR or the second CBR.

[0141] In the sixth aspect, determining the one or more transmission parameters, either alone or in combination with the fifth aspect, based at least in part on at least one of the first CBR or the second CBR, includes: determining the highest CBR among the first CBR and the second CBR, and determining the one or more transmission parameters based at least in part on the highest CBR.

[0142] In the seventh aspect, determining the one or more transmission parameters, either alone or in combination with the fifth aspect, based at least in part on at least one of the first CBR or the second CBR, includes: determining a first transmission parameter included in the one or more transmission parameters based at least in part on the first CBR; and determining a second transmission parameter included in the one or more transmission parameters based at least in part on the second CBR.

[0143] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, process 1100 includes: receiving from the third UE an indication of a third CBR for a third beam group associated with the third UE; and using a beam included in the first beam group, transmitting to the third UE a different signal using one or more transmission parameters at least partially based on the first CBR or the third CBR.

[0144] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the one or more transmission parameters include: the number of hybrid automatic repeat request retransmissions, the number of sub-channels that the UE will use in a time slot, at least one of modulation and coding schemes or channel occupancy limits.

[0145] although Figure 11 An example block of process 1100 is shown, but in some respects, process 1100 may include... Figure 11 The blocks shown are those that are additional, fewer, different, or arranged differently compared to other blocks. Alternatively, two or more blocks in process 1100 may be executed in parallel.

[0146] Figure 12This is a block diagram of an exemplary device 1200 for wireless communication. Device 1200 may be a UE (e.g., a Tx UE as described herein), or a UE may include device 1200. In some aspects, device 1200 includes a receiving component 1202 and a transmitting component 1204, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1200 can use the receiving component 1202 and the transmitting component 1204 to communicate with another device 1206 (such as a UE, a base station, or another wireless communication device). As further shown, device 1200 may include one or more of a CBR measurement component 1208 or a determination component 1210, etc.

[0147] In some respects, device 1200 can be configured to perform the functions described herein. Figure 8A , 8B One or more operations described in 8C, 9 and / or 10. Additionally or alternatively, the device 1200 may be configured to perform one or more processes described herein (such as... Figure 11 The process 1100) or a combination thereof. In some respects, Figure 12 The device 1200 and / or one or more components shown may include the above combination. Figure 2 One or more components of the UE described. Alternatively or alternatively, Figure 12 One or more of the components shown can be implemented in the above combination Figure 2 Within one or more of the components described. Alternatively or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0148] Receiver 1202 may receive communications from device 1206, such as reference signals, control information, data communications, or combinations thereof. Receiver 1202 may provide the received communications to one or more other components of device 1200. In some aspects, receiver 1202 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signal to one or more other components of device 1206. In some aspects, receiver 1202 may include combinations of the above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0149] Transmitting component 1204 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1206. In some aspects, one or more other components of device 1206 can generate communications and provide the generated communications to transmitting component 1204 for transmission to device 1206. In some aspects, transmitting component 1204 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding) on ​​the generated communications and transmit the processed signals to device 1206. In some aspects, transmitting component 1204 may include combinations of the above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1204 may co-located with the receive component 1202 in a transceiver.

[0150] CBR measurement component 1208 can measure a first CBR of a first beam group in a set of beam groups associated with the UE. Receiving component 1202 can receive from the second UE an indication of a second CBR of a second beam group associated with the second UE. Transmitting component 1204 can transmit to the second UE a signal using one or more transmission parameters at least partially based on at least one of the first or second CBR, using beams included in the first beam group.

[0151] The receiving component 1202 may receive from the second UE or one or more other UEs an indication of the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals, using a beam included in the first beam group or another beam. The CBR measurement component 1208 may determine the first CBR of the first beam group based at least in part on the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals. The receiving component 1202 may receive the indication via at least one of an announcement message or a physical-side walkway feedback channel signal.

[0152] The determining component 1210 can determine the one or more transmission parameters at least partially based on at least one of a first CBR or a second CBR. The determining component 1210 can determine the highest CBR of the first and second CBRs. The determining component 1210 can determine the one or more transmission parameters at least partially based on the highest CBR. The determining component 1210 can determine a first transmission parameter included in the one or more transmission parameters at least partially based on the first CBR. The determining component 1210 can determine a second transmission parameter included in the one or more transmission parameters at least partially based on the second CBR.

[0153] The receiving component 1202 can receive an indication of a third CBR for a third beam group associated with the third UE from the third UE. The transmitting component 1204 can use the beams included in the first beam group to transmit different signals to the third UE using one or more transmission parameters based at least in part on the first CBR or the third CBR.

[0154] supply Figure 12 The number and arrangement of components shown are for illustrative purposes only. In reality, it is possible to have... Figure 12 The components shown are those that are additional, fewer, different, or arranged differently compared to other components. Furthermore, Figure 12 The two or more components shown can be implemented within a single component, or Figure 12 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 12 The collection of (one or more) components shown can perform actions described as being performed by Figure 12 The other set of components shown performs one or more functions.

[0155] Figure 13 This is a block diagram of an exemplary device 1300 for wireless communication. Device 1300 may be a UE (e.g., an Rx UE as described herein), or a UE may include device 1300. In some aspects, device 1300 includes a receiving component 1302 and a transmitting component 1304, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1300 can use the receiving component 1302 and the transmitting component 1304 to communicate with another device 1306 (such as a UE, a base station, or another wireless communication device). As further shown, device 1300 may include a CBR measurement component 1308, etc.

[0156] In some respects, device 1300 can be configured to perform the functions described herein. Figure 8A , 8B One or more operations described in 8C, 9, and / or 10. Additionally or alternatively, the apparatus 1300 may be configured to perform one or more processes or combinations thereof described herein. In some aspects, Figure 13 The device 1300 and / or one or more components shown may include the above combination. Figure 2 One or more components of the UE described. Alternatively or alternatively, Figure 13 One or more of the components shown can be implemented in the above combination Figure 2Within one or more of the components described. Alternatively or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0157] Receiver 1302 may receive communications from device 1306, such as reference signals, control information, data communications, or combinations thereof. Receiver 1302 may provide the received communications to one or more other components of device 1300. In some aspects, receiver 1302 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding), and may provide the processed signal to one or more other components of device 1306. In some aspects, receiver 1302 may include combinations of the above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0158] Transmitting component 1304 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1306. In some aspects, one or more other components of device 1306 can generate communications and provide the generated communications to transmitting component 1304 for transmission to device 1306. In some aspects, transmitting component 1304 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding) on ​​the generated communications and can transmit the processed signals to device 1306. In some aspects, transmitting component 1304 may include combinations of the above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1304 may co-located with the receive component 1302 in a transceiver.

[0159] CBR measurement component 1308 can measure a first CBR of a first beam group in a set of beam groups associated with the UE. Transmitting component 1304 can transmit an indication of the first CBR of the first beam group to the second UE. Receiving component 1302 can receive from the second UE a signal using one or more transmission parameters based at least in part on at least one of the first CBR or the second CBR of the second beam group, using beams included in the second beam group.

[0160] supply Figure 13The number and arrangement of components shown are for illustrative purposes only. In reality, it is possible to have... Figure 13 The components shown are those that are additional, fewer, different, or arranged differently compared to other components. Furthermore, Figure 13 The two or more components shown can be implemented within a single component, or Figure 13 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 13 The collection of (one or more) components shown can perform actions described as being performed by Figure 13 The other set of components shown performs one or more functions.

[0161] The following provides an overview of some aspects of this disclosure:

[0162] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: measuring a first channel busy rate (CBR) of a first beam group in a set of beam groups associated with the UE; receiving from a second UE an indication of a second CBR of a second beam group associated with the second UE; and transmitting to the second UE a signal using one or more transmission parameters at least partially based on at least one of the first CBR or the second CBR, using beams included in the first beam group.

[0163] Aspect 2: According to the method of aspect 1, wherein measuring the first CBR of the first beam group includes: receiving an indication from the second UE or one or more other UEs of the amount of resources that have been or will be used by the second UE or one or more other UEs to receive signals using the beam or another beam included in the first beam group; and determining the first CBR of the first beam group based at least in part on the amount of resources that have been or will be used by the second UE or one or more other UEs to receive signals.

[0164] Aspect 3: According to the method of aspect 2, receiving an indication of the number of resources that have been or will be used by the second UE or the one or more other UEs to receive signals includes receiving the indication via at least one of an announcement message or a physical side link feedback channel signal.

[0165] Aspect 4: The method according to any one of aspects 1-3, wherein the second CBR is based at least in part on measurements of physical-side crosslink shared channel signals or physical-side crosslink control channel signals performed by the second UE using one or more beams included in the second beam group.

[0166] Aspect 5: The method according to any one of aspects 1-4, wherein the second beam group includes a receiving beam that the second UE will use to receive the signal from the UE.

[0167] Aspect 6: The method according to any one of aspects 1-5 further includes: determining the one or more transmission parameters based at least in part on at least one of the first CBR or the second CBR.

[0168] Aspect 7: According to the method of aspect 6, determining the one or more transmission parameters based at least in part on at least one of the first CBR or the second CBR includes: determining the highest CBR among the first CBR and the second CBR; and determining the one or more transmission parameters based at least in part on the highest CBR.

[0169] Aspect 8: According to the method of aspect 6, determining the one or more transmission parameters based at least in part on at least one of a first CBR or a second CBR includes: determining a first transmission parameter included in the one or more transmission parameters based at least in part on the first CBR; and determining a second transmission parameter included in the one or more transmission parameters based at least in part on the second CBR.

[0170] Aspect 9: The method according to any one of aspects 1-8 further includes: receiving from the third UE an indication of a third CBR for a third beam group associated with the third UE, and transmitting to the third UE using a beam included in the first beam group a different signal using one or more transmission parameters at least partially based on the first CBR or the third CBR.

[0171] Aspect 10: The method according to any one of aspects 1-9, wherein the one or more transmission parameters include at least one of the following: the number of hybrid automatic repeat request retransmissions, the number of sub-channels that the UE will use in a time slot, the modulation and coding scheme, or the channel occupancy limit.

[0172] Aspect 11: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more aspects of Aspects 1-10.

[0173] Aspect 12: An apparatus for wireless communication, comprising: a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the methods of one or more aspects of aspects 1-10.

[0174] Aspect 13: An apparatus for wireless communication, comprising at least one unit for performing the methods of one or more aspects of aspects 1-10.

[0175] Aspect 14: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by a processor to perform methods of one or more aspects of aspects 1-10.

[0176] Aspect 15: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more methods of aspects 1-10.

[0177] The foregoing disclosure provides illustrations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations can be made based on the foregoing disclosure, or from practice in these areas.

[0178] As used herein, the term "component" is intended to be interpreted broadly as hardware and / or a combination of hardware and software. "Software" should be interpreted broadly as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, application programs, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, whether referred to as software, firmware, middleware, microcode, hardware description languages, or others. As used herein, processors are implemented in hardware and / or a combination of hardware and software. It is evident that the systems and / or methods described herein can be implemented in various forms of hardware, firmware, and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Therefore, this document describes the operation and behavior of systems and / or methods without reference to any specific software code—it should be understood that software and hardware can be designed to implement systems and / or methods, at least in part, based on the descriptions herein.

[0179] As used in this article, depending on the context, satisfying a threshold can refer to a value greater than the threshold, a value greater than or equal to the threshold, a value less than the threshold, a value less than or equal to the threshold, a value equal to the threshold, a value not equal to the threshold, and so on.

[0180] Although specific combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of aspects. In fact, many of these features can be combined in ways not specifically set forth in the claims and / or disclosed in the specification. While each dependent claim listed below may directly depend on only one claim, the disclosure of aspects includes each dependent claim combined with every other claim in the claim set. As used herein, the phrase “at least one of” in the list of items refers to any combination of these items, including single members. As an example, “at least one of a, b, or c” is intended to cover: a, b, c, ab, ac, bc, and abc, and any combination with multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0181] No element, operation, or instruction used herein should be construed as critical or necessary unless explicitly stated otherwise. Furthermore, as used herein, the article “a (a, an)” is intended to include one or more items and may be used interchangeably with “one or more.” Furthermore, as used herein, the article “described” is intended to include one or more items referenced in connection with the article “described” and may be used interchangeably with “one or more.” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and may be used interchangeably with “one or more.” Where the intent is to include only one item, the phrase “only one” or similar language is used. Furthermore, as used herein, the term “has (has, have, having, etc.)” is intended to be an open-ended term. Furthermore, unless explicitly stated otherwise, the phrase “based on” is intended to mean “at least partially based on.” Furthermore, as used herein, the term “or” is intended to be inclusive when used consecutively and may be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., if used in conjunction with “any” or “only one”).

Claims

1. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: For a first beam group in the set of beam groups associated with the UE, a first channel busy rate (CBR) of the first beam group is measured, wherein the first beam group is configured for side link communication; The second UE receives an indication of a second CBR, the indication of which is based on a measurement performed by the second UE. The second CBR is directed to one or more beams in a second beam group associated with the second UE, wherein the second beam group is configured for receiving side-link communication. Using the beams included in the first beam group, a signal is transmitted to the second UE using one or more transmission parameters based at least in part on the first CBR or the second CBR. Wherein, the one or more transmission parameters include at least one of the following: The number of retransmissions requested by the mixed automatic repeat request, or Channel occupancy limit.

2. The UE of claim 1, wherein, The one or more processors are configured to: when measuring the first CBR of the first beam group. Using the beam or another beam included in the first beam group, receive from the second UE or one or more other UEs an indication of the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals; as well as The first CBR of the first beam group is determined at least in part based on the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals.

3. The UE of claim 2, wherein, The one or more processors, upon receiving an indication of the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals, are configured to: The instruction is received via at least one of an announcement message or a physical side link feedback channel signal.

4. The UE of claim 1, wherein, The second CBR is based at least in part on measurements of the physical-side crosslink shared channel signal or the physical-side crosslink control channel signal performed by the second UE using one or more beams included in the second beam group.

5. The UE of claim 1, wherein, The second beam group includes the receive beam that the second UE will use to receive the signal from the UE.

6. The UE of claim 1, wherein, The one or more processors are further configured to: The one or more transmission parameters are determined at least in part based on at least one of the first CBR or the second CBR.

7. The UE of claim 6, wherein, The one or more processors are configured to: determine the one or more transmission parameters based at least in part on the first CBR or the second CBR. Determine the highest CBR among the first CBR and the second CBR; and The one or more transmission parameters are determined at least in part based on the highest CBR.

8. The UE according to claim 6, wherein, The one or more processors are configured to: determine the one or more transmission parameters based at least in part on the first CBR or the second CBR. The first transmission parameter included in the one or more transmission parameters is determined at least in part based on the first CBR; and The second transmission parameter included in the one or more transmission parameters is determined at least in part based on the second CBR.

9. The UE according to claim 1, wherein, The one or more processors are further configured to: Receive from the third UE an indication of the third CBR for the third beam group associated with the third UE; and Using the beams included in the first beam group, the third UE is transmitted with different signals using one or more transmission parameters based at least in part on the first CBR or the third CBR.

10. The UE according to claim 1, wherein, The one or more transmission parameters also include at least one of the following: The number of sub-channels that the UE will use in the time slot, or Modulation and coding schemes.

11. A method for wireless communication performed by a user equipment (UE), comprising: For a first beam group in the set of beam groups associated with the UE, a first channel busy rate (CBR) of the first beam group is measured, wherein the first beam group is configured for side link communication; The second UE receives an indication of a second CBR, the indication of which is based on a measurement performed by the second UE. The second CBR is directed to one or more beams in a second beam group associated with the second UE, wherein the second beam group is configured for receiving side-link communication. Using the beams included in the first beam group, a signal is transmitted to the second UE using one or more transmission parameters based at least in part on the first CBR or the second CBR. Wherein, the one or more transmission parameters include at least one of the following: The number of retransmissions requested by the mixed automatic repeat request, or Channel occupancy limit.

12. The method according to claim 11, wherein, Measuring the first CBR of the first beam group includes: Using the beam or another beam included in the first beam group, receive from the second UE or one or more other UEs an indication of the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals; and The first CBR of the first beam group is determined at least in part based on the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals.

13. The method according to claim 12, wherein, Receiving an indication of the amount of resources that have been or will be used by the second UE or one or more other UEs to receive signals includes: The instruction is received via at least one of an announcement message or a physical side link feedback channel signal.

14. The method according to claim 11, wherein, The second CBR is based at least in part on measurements of the physical-side crosslink shared channel signal or the physical-side crosslink control channel signal performed by the second UE using one or more beams included in the second beam group.

15. The method according to claim 11, wherein, The second beam group includes the receive beam that the second UE will use to receive the signal from the UE.

16. The method of claim 11, further comprising: The one or more transmission parameters are determined at least in part based on at least one of the first CBR or the second CBR.

17. The method according to claim 16, wherein, Determining the one or more transmission parameters based at least in part on the first CBR or the second CBR includes: Determine the highest CBR among the first CBR and the second CBR; and The one or more transmission parameters are determined at least in part based on the highest CBR.

18. The method according to claim 16, wherein, Determining the one or more transmission parameters based at least in part on the first CBR or the second CBR includes: The first transmission parameter included in the one or more transmission parameters is determined at least in part based on the first CBR; and The second transmission parameter included in the one or more transmission parameters is determined at least in part based on the second CBR.

19. The method of claim 11, further comprising: Receive an instruction from the third UE for the third CBR of the third beam group associated with the third UE; as well as Using the beams included in the first beam group, the third UE is transmitted with different signals using one or more transmission parameters based at least in part on the first CBR or the third CBR.

20. The method according to claim 11, wherein, The one or more transmission parameters also include at least one of the following: The number of sub-channels that the UE will use in the time slot, or Modulation and coding schemes.

21. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: One or more instructions, which, when executed by one or more processors of a user equipment (UE), cause the UE to: For a first beam group in the set of beam groups associated with the UE, a first channel busy rate (CBR) of the first beam group is measured, wherein the first beam group is configured for side link communication; The second UE receives an indication of a second CBR, the indication of which is based on a measurement performed by the second UE. The second CBR is directed to one or more beams in a second beam group associated with the second UE, wherein the second beam group is configured for receiving side-link communication. Using the beams included in the first beam group, a signal is transmitted to the second UE using one or more transmission parameters based at least in part on the first CBR or the second CBR. Wherein, the one or more transmission parameters include at least one of the following: The number of retransmissions requested by the mixed automatic repeat request, or Channel occupancy limit.

22. The non-transitory computer-readable medium according to claim 21, wherein, The one or more instructions that cause the UE to measure the first CBR of the first beam group cause the UE to: Using the beam or another beam included in the first beam group, receive from the second UE or one or more other UEs an indication of the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals; as well as The first CBR of the first beam group is determined at least in part based on the amount of resources that have been or will be used by the second UE or the one or more other UEs to receive signals.

23. The non-transitory computer-readable medium according to claim 21, wherein, The second beam group includes the receive beam that the second UE will use to receive the signal from the UE.

24. The non-transitory computer-readable medium according to claim 21, wherein, The one or more instructions also cause the UE to: The one or more transmission parameters are determined at least in part based on at least one of the first CBR or the second CBR.

25. The non-transitory computer-readable medium according to claim 21, wherein, The one or more instructions also cause the UE to: Receive from the third UE an indication of the third CBR for the third beam group associated with the third UE; and Using the beams included in the first beam group, the third UE is transmitted with different signals using one or more transmission parameters based at least in part on the first CBR or the third CBR.

26. An apparatus for wireless communication, comprising: A unit for measuring a first channel busy rate (CBR) of a first beam group in a set of beam groups associated with the device, wherein the first beam group is configured for side link communication. A unit for receiving an indication of a second CBR from a user equipment (UE), the indication of the second CBR being based on a measurement performed by the UE, the second CBR being for one or more beams in a second beam group associated with the UE, wherein the second beam group is configured for receiving side-link communication; and A unit for transmitting to the UE a signal using one or more transmission parameters based at least in part on at least one of the first CBR or the second CBR, using beams included in the first beam group. Wherein, the one or more transmission parameters include at least one of the following: The number of retransmissions requested by the mixed automatic repeat request, or Channel occupancy limit.

27. The apparatus according to claim 26, wherein, The unit used to measure the first CBR of the first beam group includes: A unit for receiving, using the beam or another beam included in the first beam group, an indication of the amount of resources that have been or will be used by the UE or one or more other UEs to receive signals; and A unit for determining the first CBR of the first beam group based at least in part on the amount of resources that have been or will be used by the UE or one or more other UEs to receive signals.

28. The apparatus according to claim 26, wherein, The second beam group includes the receive beam that the UE will use to receive the signal from the device.

29. The apparatus of claim 26, further comprising: A unit for determining the one or more transmission parameters based at least in part on the first CBR or the second CBR.

30. The apparatus of claim 26, further comprising: A unit for receiving an indication from the second UE of a third CBR for a third beam group associated with the second UE; as well as A unit for transmitting to the second UE using beams included in the first beam group, the second UE, different signals using one or more transmission parameters based at least in part on at least one of the first CBR or the third CBR.

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