Techniques for Sidelink Carrier Aggregation (CA) and Multi-Component Carrier (CC) Authorization

Abstract

The present disclosure relates to multi-component carrier grants. In one aspect, a relay UE may determine a plurality of sidelink component carriers based on a grant including a plurality of downlink component carriers and send the plurality of sidelink component carriers to a remote UE, the plurality of sidelink component carriers being associated with a second communication channel. In another aspect, the remote UE may receive a plurality of sidelink component carriers associated with a first communication channel from the relay UE, the plurality of sidelink component carriers derived from the grant including a plurality of downlink component carriers associated with a second communication channel.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Patent Application No. 63 / 065,926, filed on August 14, 2020, entitled “TECHNIQUES FOR SIDELINK CARRIERAGGREGATION (CA) AND MULTI-COMPONENT CARRER (CC) GRANTS,” and U.S. Patent Application No. 17 / 388,884, filed on July 29, 2021, entitled “TECHNIQUES FOR SIDELINK CARRIERAGGREGATION (CA) AND MULTI-COMPONENT CARRER (CC) GRANTS,” the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] The present disclosure relates generally to communication systems, and more particularly to sidelink carrier aggregation (CA) and multiple component carrier (CC) grants. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. 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, and time division synchronous code division multiple access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted by various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continued mobile broadband evolution released by the 3rd Generation Partnership Project (3GPP) to meet new requirements related to latency, reliability, security, scalability (such as the Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. Further improvements to 5G NR technology are needed. These improvements may also be applicable to other multiple access technologies and telecommunication standards that adopt these technologies.

[0006] Some wireless communication networks include device-to-device (D2D) communications, such as, but not limited to, vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I) (e.g., from a vehicle-based communication device to a road infrastructure node), vehicle-to-network (V2N) (e.g., from a vehicle-based communication device to one or more network nodes, such as a base station), combinations thereof, and / or vehicle-based communication devices communicating with other devices, which may be collectively referred to as vehicle-to-everything (V2X) communications. Further improvements in multiple access and D2D technologies are needed. Summary of the invention

[0007] A simplified summary of one or more aspects is given below in order to provide a basic understanding of these aspects. This summary is not an extensive overview of all contemplated aspects, and is neither intended to identify key or important elements of all aspects, nor to describe the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that is presented later.

[0008] According to an example, a method for wireless communication by a relay user equipment (UE) includes receiving from a network entity a first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel. The method also includes identifying a second plurality of component carrier grants based on the first plurality of component carrier grants, the second plurality of component carrier grants being associated with a second communication channel and including a second plurality of component carriers. The method also includes receiving data on the first plurality of component carriers in resources corresponding to the first plurality of component carrier grants. The method also includes sending the received data in the second plurality of component carriers to a remote UE in resources corresponding to the second plurality of component carrier grants.

[0009] Another example of the subject matter described in the present disclosure can be implemented at an apparatus for wireless communication, the apparatus comprising a memory and at least one processor coupled to the memory. The at least one processor can be configured to receive a first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel from a network entity. The at least one processor can also be configured to identify a second plurality of component carrier grants based on the first plurality of component carrier grants, the second plurality of component carrier grants being associated with a second communication channel and including a second plurality of component carriers. The at least one processor can also be configured to receive data on the first plurality of component carriers in resources corresponding to the first plurality of component carrier grants. The at least one processor can also be configured to send the received data in the second plurality of component carriers to a remote UE in resources corresponding to the second plurality of component carrier grants.

[0010] Additional examples of the subject matter described in the present disclosure can be implemented at an apparatus for wireless communication, the apparatus comprising means for receiving, from a network entity, a first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel. The apparatus also comprises means for identifying, based on the first plurality of component carrier grants, a second plurality of component carrier grants associated with a second communication channel and including a second plurality of component carriers. The apparatus also comprises means for receiving data on the first plurality of component carriers in resources corresponding to the first plurality of component carrier grants. The apparatus also comprises means for sending, to a remote UE in resources corresponding to the second plurality of component carrier grants, the received data in the second plurality of component carriers.

[0011] Another example of the subject matter described in the present disclosure can be implemented on a computer-readable medium storing computer-executable code, which, when executed by a processor, causes the processor to perform the following operations: receiving a first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel from a network entity. The computer-readable medium also includes code that, when executed by the processor, causes the processor to perform the following operations: identifying a second plurality of component carrier grants based on the first plurality of component carrier grants, the second plurality of component carrier grants being associated with a second communication channel and including a second plurality of component carriers. The computer-readable medium also includes code that, when executed by the processor, causes the processor to perform the following operations: receiving data on the first plurality of component carriers in resources corresponding to the first plurality of component carrier grants. The computer-readable medium also includes code that, when executed by the processor, causes the processor to perform the following operations: sending the received data in the second plurality of component carriers to a remote UE in resources corresponding to the second plurality of component carrier grants.

[0012] In a further example, the present disclosure provides a method for wireless communication via a remote UE, comprising: receiving data in a plurality of component carriers in resources corresponding to a plurality of component carrier grants from a relay UE on a communication channel, the plurality of component carrier grants being derived from a different plurality of component carrier grants including a different plurality of component carriers. The method also includes sending different data on a sidelink communication channel to the relay UE on the communication channel.

[0013] Another example of the subject matter described in the present disclosure can be implemented at an apparatus for wireless communication, the apparatus comprising a memory and at least one processor coupled to the memory. The at least one processor can be configured to receive data in multiple component carriers in resources corresponding to multiple component carrier grants from a relay UE on a communication channel, the multiple component carrier grants being derived from different multiple component carrier grants including different multiple component carriers. The at least one processor can also be configured to send different data on a sidelink communication channel to the relay UE on the communication channel.

[0014] Additional examples of the subject matter described in the present disclosure can be implemented at an apparatus for wireless communication, the apparatus including means for receiving data in a plurality of component carriers in resources corresponding to a plurality of component carrier grants from a relay UE on a communication channel, the plurality of component carrier grants being derived from a different plurality of component carrier grants including a different plurality of component carriers. The apparatus also includes means for sending different data on a sidelink communication channel to the relay UE on the communication channel.

[0015] Another example of the subject matter described in the present disclosure can be implemented on a computer-readable medium storing computer-executable code, which, when executed by a processor, causes the processor to perform the following operations: receiving data in multiple component carriers in resources corresponding to multiple component carrier grants from a relay UE on a communication channel, the multiple component carrier grants originating from different multiple component carrier grants including different multiple component carriers. The computer-readable medium also includes code that, when executed by the processor, causes the processor to perform the following operations: sending different data on a sidelink communication channel to the relay UE on the communication channel.

[0016] In addition, the present disclosure provides a method for wireless communication at a network entity, comprising determining a first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel, the first plurality of component carrier grants being used to determine a second plurality of component carrier grants associated with a second communication channel and including the second plurality of component carriers. The method may also include sending the first plurality of component carrier grants to a relay UE on the first communication channel.

[0017] Another example of the subject matter described in the present disclosure can be implemented at an apparatus for wireless communication, the apparatus comprising a memory and at least one processor coupled to the memory. The at least one processor can be configured to determine a first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel, the first plurality of component carrier grants being used to determine a second plurality of component carrier grants associated with a second communication channel and including the second plurality of component carriers. The at least one processor can also be configured to send the first plurality of component carrier grants to a relay UE on the first communication channel.

[0018] Additional examples of the subject matter described in the present disclosure can be implemented at an apparatus for wireless communication, the apparatus including means for determining a first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel, the first plurality of component carrier grants being used to determine a second plurality of component carrier grants associated with a second communication channel and including the second plurality of component carriers. The apparatus may also include means for sending the first plurality of component carrier grants to a relay UE on the first communication channel.

[0019] Another example of the subject matter described in the present disclosure can be implemented on a computer-readable medium storing computer-executable code, which, when executed by a processor, causes the processor to perform the following operations: determine a first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel, the first plurality of component carrier grants being used to determine a second plurality of component carrier grants associated with a second communication channel and including the second plurality of component carriers. The computer-readable medium also includes code that, when executed by the processor, causes the processor to perform the following operations: send the first plurality of component carrier grants to a relay UE on the first communication channel.

[0020] To achieve the foregoing and related ends, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are merely indicative of some of the various ways in which the principles of the various aspects may be employed, and the present description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of an example of a wireless communication system and an access network.

[0022] Figure 2A , 2B , 2C and 2D are used for Figure 1 FIG. 1 is a diagram of an example of a first 5G / NR frame, DL channels within a 5G / NR subframe, a second 5G / NR frame, and UL channels within a 5G / NR subframe used in communications between two communication nodes in a system.

[0023] Figure 3 is used for Figure 1 A diagram of an example frame structure and resources for sidelink communication between two communication nodes in a system.

[0024] Figure 4 yes Figure 1 Schematic diagram of an example of hardware components of two communicating nodes in a system.

[0025] Figure 5 is available in Figure 1 Schematic diagram of an example of a side link relay communication configuration operating in a system.

[0026] Figure 6 is available in Figure 1 Schematic diagrams of two different examples of side link relay communication configurations operating in a system.

[0027] Figure 7 is Figure 1 A flowchart of an exemplary wireless communication method at a relay UE operable in a system.

[0028] Figure 8 is Figure 1 Flowchart of another example method of wireless communication at a remote UE operable in a system.

[0029] Fig. 9 is Figure 1 A flow chart of a wireless communication method at a network entity operable in a system.

[0030] Fig.10 is a block diagram of an example UE according to various aspects of the present disclosure.

[0031] Fig.11 is a block diagram of an example base station in accordance with various aspects of the present disclosure. DETAILED DESCRIPTION

[0032] The detailed description given below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configuration in which the concepts described herein may be practiced. In order to provide a thorough understanding of the various concepts, the detailed description includes specific details. However, it is apparent to those skilled in the art that these concepts may be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring these concepts.

[0033] The present aspect generally relates to sidelink relay communication, which includes a relay user equipment (UE) relaying communication from a base station to a remote UE via a sidelink, or from a remote UE to a base station via a relay UE. The sidelink may include a physical sidelink shared channel (PSSCH) and a physical sidelink control channel (PSCCH). The PSSCH may carry sidelink data between the relay UE and the remote UE. Sidelink transmission may be defined as a one-to-many scheme, which means that data may be received by multiple UEs belonging to a group. The PSCCH may carry sidelink control information (SCI), which may include information about resource allocation for the PSSCH.

[0034] In particular, the present disclosure relates to enhancements to sidelink communications, and in particular, to sidelink carrier aggregation and multi-component carrier (CC) authorization. In a device-to-device (D2D) communication system operating according to a new radio (NR) scheme, which may include a relay UE that communicates with a network entity and a remote UE, carrier aggregation may be implemented on a sidelink between the relay UE and the remote UE. That is, carriers forming PSSCH and / or PSCCH may be aggregated to increase the total transmission bandwidth and thereby increase the data rate achievable on the above-mentioned communication channels (e.g., PSSCH and PSCCH). Each aggregated carrier may correspond to a CC. Further, each CC may have a certain bandwidth and the number of aggregated carriers may not exceed the maximum number of aggregated carriers. Although carrier aggregation may be useful in high data rate applications in D2D communication systems, the implementation of carrier aggregation may result in increased complexity.

[0035] Thus, the present disclosure mitigates implementation complexity and potential negative impact on UEs during sidelink carrier aggregation by providing downlink and sidelink grants to schedule multiple CCs. Specifically, a UE such as a relay UE can derive or otherwise determine a set of sidelink component carriers on the downlink (e.g., the set of sidelink component carriers that can be used to relay data received from gNb to a remote UE) based on a received grant that includes a set of downlink component carriers. In other words, instead of combining both downlink and sidelink grants for transmission on downlink control information (DCI), sidelink grant information can be derived from a downlink grant at the relay UE, thereby mitigating an increase in the size of the DCI (e.g., as a result of carrying both downlink and sidelink grants).

[0036] These and other features of the present disclosure are described below with respect to Figure 1-11 Discuss in detail.

[0037] Several aspects of telecommunication systems will now be described with reference to various apparatus and methods. These apparatus and methods will be described in the detailed description that follows and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0038] For example, an element, or any part of an element, or any combination of elements can be implemented as a "processing system" including one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on chips (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gate logic, discrete hardware circuits, and other suitable hardware configured to perform various functions described throughout this disclosure. One or more processors in a processing system can execute software. Software can be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes, functions, etc., whether referring to software, firmware, middleware, microcode, hardware description languages, or other names.

[0039] Therefore, in one or more example embodiments, the described functions may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on a computer-readable medium or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. The storage medium may be any available medium that a computer can access. As an example and not limitation, such a computer-readable medium may include a random access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), an optical disk storage, a magnetic disk storage, other magnetic storage devices, a combination of computer-readable media of the above types, or any other medium that can be used to store computer executable code in the form of computer-accessible instructions or data structures.

[0040] Figure 1 is a diagram showing an example of a wireless communication system and access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes a base station 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)).

[0041] In certain aspects, the relay UE 104a may include a relay communication component 121 for assisting in sidelink relay communications between the base station 102a and the remote UE 104b. The relay UE 104a may have a first access link 120a directly with the base station 102a, and a second communication link with the remote UE 104b, which may have a second access link 120b to the base station 102a. The relay communication component 121 of the relay UE 104a may include a sidelink relay multi-CC component 123, which may be selectively configured to derive or otherwise determine a grant of a sidelink CC based on a grant of a downlink CC received from the base station 102a.

[0042] In addition, the remote UE 104b may include a remote communication component 125 for facilitating sidelink relay communications with the relay UE 104a. The remote UE 104b may have a sidelink access 158a and in some aspects an access link 120b to the base station 102a. The remote communication component 125 may be configured to receive data on at least one CC in a set of sidelink CCs received from the relay UE 104a, the relay UE 104a defining a plurality of sidelink component carriers associated with the first communication channel.

[0043] Similarly, the base station 102a may include a base station communications component 127 configured to determine a grant including a plurality of downlink component carriers for the relay UE 104a to derive a plurality of sidelink component carriers for the remote UE 104b.

[0044] Further details of these multi-CC techniques performed by the relay UE 104a, remote UE 104b, and base station 102a are discussed in greater detail below.

[0045] Base stations 102, including base station 102a, may include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femto cells, pico cells, and micro cells.

[0046] Base stations 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with EPC 160 via a backhaul link 132 (e.g., an S1 interface). Base stations 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) may interface with 5G core network 190 via a backhaul link 184. Among other functions, base stations 102 may perform one or more of the following functions: transmission of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), user and device tracking, RAN information management (RIM), paging, positioning, and delivery of warning messages. Base stations 102 may communicate with each other directly or indirectly (eg, through EPC 160 or core network 190) via backhaul links 134 (eg, X2 interfaces). Backhaul links 134 may be wired or wireless.

[0047] Base station 102 can wirelessly communicate with UE 104, including relay UE 104b and sidelink auxiliary multi-link UE 104a. Each base station 102 can provide communication coverage for its own geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' can have a coverage area 110' that overlaps with the coverage area 110 of one or more macro base stations 102. A network including small cells and macro cells can be referred to as a heterogeneous network. A heterogeneous network can also include a home evolved Node B (eNB) (HeNB), which can provide services to a restricted group called a closed subscriber group (CSG). The communication link 120 (including access links 120a and 120b) between base station 102 and UE 104 can include an uplink (UL) (also called a reverse link) transmission from UE 104 to base station 102 and / or a downlink (DL) (also called a forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The communication link may pass through one or more operators. The base station 102 / UE 104 may use up to Y MHz bandwidth per carrier (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) allocated in carrier aggregation or up to a total of Yx MHz (x component carriers) spectrum for transmission in each direction. The carriers may be adjacent or non-adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​than for UL). The component carrier may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0048] Certain UEs 104, such as relay UE 104b and sidelink-assisted multilink UE 104a, may communicate with each other using device-to-device (D2D) communication links 158, an example of which includes sidelink 158a. The D2D communication link 158 may use DL / UL WWAN spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). D2D communications may be through various wireless D2D communication systems, such as FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on IEEE802.11 standards, LTE, or NR.

[0049] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 in the 5 GHz unlicensed spectrum via a communication link 154. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) to determine whether the channel is available prior to communication.

[0050] The small cell 102' may operate in licensed and / or unlicensed spectrum. When operating in the unlicensed spectrum, the small cell 102' may employ NR and use the same 5 GHz unlicensed spectrum used by the Wi-Fi AP 150. The small cell 102' employing NR in the unlicensed spectrum may improve the coverage of the access network and / or increase the capacity of the access network.

[0051] The base station 102, whether a small cell 102' or a large cell (e.g., a macro base station), can include an eNB, a gNodeB (gNB), or another type of base station. Some base stations, such as gNB 180, can operate in traditional sub-6 GHz spectrum, millimeter wave (mmW) frequencies, and / or near-mmW frequencies for communicating with UE 104. When the gNB 180 operates at mmW or near-mmW frequencies, the gNB 180 can be referred to as a mmW base station. Extremely high frequency (EHF) is a portion of the RF in the electromagnetic spectrum. EHF ranges from 30 GHz to 300 GHz and has wavelengths between 1 mm and 10 mm. Radio waves in this band can be referred to as millimeter waves. Near mmW can extend down to frequencies of 3 GHz with wavelengths of 100 mm. The super high frequency (SHF) band extends between 3 GHz and 30 GHz and is also called centimeter waves. Communications using mmW / near-mmW radio frequency bands (e.g., 3 GHz–300 GHz) have extremely high path losses and short distances. The mmW base station 180 may use beamforming 182 with the UE 104 to compensate for the extremely high path loss and short range.

[0052] The base station 180 may transmit beamformed signals in one or more transmit directions 182' to the UE 104. The UE 104 may receive beamformed signals from the base station 180 in one or more receive directions 182". The UE 104 may also transmit beamformed signals to the base station 180 in one or more transmit directions. The base station 180 may receive beamformed signals from the UE 104 in one or more receive directions. The base station 180 / UE 104 may perform beam training to determine the best receive and transmit directions for each of the base stations 180 / UE 104. The transmit and receive directions of the base station 180 may be the same or different. The transmit and receive directions of the UE 104 may be the same or different.

[0053] The EPC 160 may include a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and a packet data network (PDN) gateway 172. The MME 162 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. Typically, the MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the serving gateway 166, which itself is connected to the PDN gateway 172. The PDN gateway 172 provides UE IP address allocation and other functions. The PDN gateway 172 and the BM-SC 170 are connected to IP services 176. The IP services 176 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS transmissions, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and may be used to schedule MBMS transmissions. The MBMS Gateway 168 may be used to distribute MBMS traffic to base stations 102 belonging to a multicast broadcast single frequency network (MBSFN) area that broadcasts a specific service, and may be responsible for session management (start / stop) and collecting eMBMS-related billing information.

[0054] The core network 190 may include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. AMF 192 may communicate with a unified data management (UDM) 196. AMF 192 is a control node that handles signaling between UE 104 and the core network 190. Typically, AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are transmitted through UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 is connected to IP services 197. IP services 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services.

[0055] A base station may also be referred to as a gNB, a Node B, an evolved Node B (eNB), an access point, a base transceiver, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmission reception point (TRP), or some other suitable term. Base station 102 provides an access point to EPC 160 or core network 190 for UE 104. Examples of UE 104 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similar functional device. Some UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile user station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

[0056] Figures 2A-2D A diagram of example frame structures and resources that may be used to facilitate multi-CC grants in communications between base stations 102 and UEs 104 as described in the present disclosure is included. Figure 2A FIG200 is a diagram illustrating an example of a first subframe within a 5G / NR frame structure. Figure 2B FIG230 is a diagram illustrating an example of DL channels within a 5G / NR subframe. Figure 2C FIG250 is a diagram illustrating an example of a second subframe within a 5G / NR frame structure. Figure 2D FIG280 is a diagram illustrating an example of UL channels within a 5G / NR subframe. The 5G / NR frame structure may be FDD, where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL, or may be TDD, where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL. Figure 2A , 2CIn the example provided, it is assumed that the 5G / NR frame structure is TDD, where subframe 4 is configured as slot format 28 (mainly DL), where D is DL, U is UL, and X is flexible between DL / UL, and subframe 3 is configured as slot format 34 (mainly UL). Although subframes 3 and 4 are shown with slot formats 34 and 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are DL and UL, respectively. Other slot formats 2-61 include a mix of DL, UL and flexible symbols. The slot format is configured for the UE via a received slot format indicator (SFI) (dynamically via DL control information (DCI), or semi-statically / statically via radio resource control (RRC) signaling). Please note that the description below also applies to the 5G / NR frame structure for TDD.

[0057] Other wireless communication technologies may have different frame structures and / or different channels. A frame (10ms) can be divided into 10 equally sized subframes (1ms). Each subframe may include one or more time slots. A subframe may also include mini-slots, which may include 7, 4, or 2 symbols. Each time slot may contain 7 or 14 symbols, depending on the time slot configuration. For time slot configuration 0, each time slot may include 14 symbols, while for time slot configuration 1, each time slot may include 7 symbols. The symbols on the DL may be cyclic prefix (CP) OFDM (CP-OFDM) symbols. The symbols on the UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (also known as single carrier frequency division multiple access (SC-FDMA) symbols) (for power-limited scenarios; limited to single stream transmission). The number of time slots within a subframe is based on the time slot configuration and the digital scheme. For slot configuration 0, different digital schemes μ from 0 to 5 allow 1, 2, 4, 8, 16, and 32 slots per subframe, respectively. For slot configuration 1, different digital schemes 0 to 2 allow 2, 4, and 8 slots per subframe, respectively. Therefore, for slot configuration 0 and digital scheme μ, there are 14 symbols / slot and 2 μ timeslot / subframe. The subcarrier spacing and symbol length / duration are functions of the digital scheme. The subcarrier spacing can be equal to 2 μ *15kHz, where μ is digital scheme 0 to 5. Thus, digital scheme μ=0 has a subcarrier spacing of 15kHz, and digital scheme μ=5 has a subcarrier spacing of 480kHz. The symbol length / duration is inversely proportional to the subcarrier spacing. Figures 2A-2D An example is provided for slot configuration 0 of 14 symbols per slot and a digital scheme μ = 0 of 1 slot per subframe. The subcarrier spacing is 15 kHz and the symbol duration is approximately 66.7 μs.

[0058] A resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) (also called a physical RB (PRB)) extending 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0059] like Figure 2A As shown, some REs carry reference (pilot) signals (RS) for UEs. RSs may include demodulation RSs (DM-RSs) (denoted as R x for a particular configuration, where 100x is the port number, but other DM-RS configurations are also possible) and channel state information reference signals (CSI-RSs) for channel estimation at the UE. RSs may also include beam measurement RSs (BRSs), beam refinement RSs (BRRSs), and phase tracking RSs (PT-RSs).

[0060] Figure 2B An example of various DL channels within a subframe of a frame is illustrated. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs), each CCE including nine RE groups (REGs), each REG including four consecutive REs in an OFDM symbol. The primary synchronization signal (PSS) may be within symbol 2 of a particular subframe of a frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identification. The secondary synchronization signal (SSS) may be within symbol 4 of a particular subframe of a frame. The UE uses the SSS to determine the physical layer cell identification group number and radio frame timing. Based on the physical layer identification and the physical layer cell identification group number, the UE may determine the physical cell identifier (PCI). Based on the PCI, the UE may determine the location of the above-mentioned DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) may be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block. The MIB provides the number of RBs in the system bandwidth and the system frame number (SFN). The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information not sent through the PBCH (eg, System Information Block (SIB)), and paging messages.

[0061] like Figure 2CAs shown, some REs carry DM-RS (denoted as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE can send DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH). The PUSCH DM-RS can be sent in the first or first two symbols of the PUSCH. The PUCCH DM-RS can be sent in different configurations, depending on whether a short PUCCH or a long PUCCH is sent and on the specific PUCCH format used. Although not shown, the UE can send a sounding reference signal (SRS). The SRS can be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0062] Figure 2D An example of various UL channels within a subframe of a frame is illustrated. The PUCCH may be located as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), and HARQ ACK / NACK feedback. The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0063] Figure 3 Figure 300 is an example of a time slot structure that can be used within a 5G / NR frame structure, for example, for sidelink communications including multi-CC authorization. This is just one example, and other wireless communication technologies may have different frame structures and / or different channels. A frame (10ms) can be divided into 10 equally sized subframes (1ms). Each subframe may include one or more time slots. A subframe may also include microslots, which may include 7, 4, or 2 symbols. Each time slot may contain 7 or 14 symbols, depending on the time slot configuration. For time slot configuration 0, each time slot may include 14 symbols, and for time slot configuration 1, each time slot may include 7 symbols.

[0064] A resource grid can be used to represent the frame structure. Each time slot may include a resource block (RB) (also called a physical RB (PRB)) extending 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme. Some REs may include control information, for example together with a demodulation RS (DM-RS). The control information may include sidelink control information (SCI). In some embodiments, at least one symbol at the beginning of the time slot may be used by the transmitting device to perform a listen-before-talk (LBT) operation before transmission. In some embodiments, at least one symbol may be used for feedback, as described herein. In some embodiments, another symbol, for example, at the end of the time slot, may be used as a gap. The gap enables the device to switch from operating as a transmitting device to preparing to operate as a receiving device, for example, in a subsequent time slot. As shown in the figure, data may be sent in the remaining REs. The data may include the data messages described herein. The position of any of the SCI, feedback, and LBT symbols may be the same as Figure 3 In some embodiments, multiple time slots may be aggregated together, and Figure 3 The example aggregation of two time slots in should not be considered limiting, as the number of aggregated time slots may also be greater than two. When time slots are aggregated, the symbols used for feedback and / or gap symbols may be different from the symbols used for a single time slot.

[0065] Figure 44 is a diagram of hardware components of example transmit and / or receive (TX / RX) nodes 410 and 450, which may be any combination of base station 102-UE 104 communications and / or UE 104-UE 104 communications in a system 100 that supports multi-CC authorization. For example, such communications may include, but are not limited to, communications such as base station 102 transmitting to relay UE 104a, relay UE transmitting to remote UE 104b, remote UE 104b transmitting to relay UE 104a, or relay UE 104a transmitting to base station 102 in an access network. In a specific example, TX / RX node 410 may be an example implementation of base station 102, and TX / RX node 450 may be an example implementation of UE 104. In the DL, IP packets from EPC 160 may be provided to controller / processor 475. Controller / processor 475 implements layer 4 and layer 2 functions. Layer 4 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 475 provides RRC layer functions associated with broadcasting of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functions associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functions associated with transmission of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; MAC layer functions associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs to transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0066] The transmit (TX) processor 416 and the receive (RX) processor 470 implement layer 1 functions associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection on the transmission channel, forward error correction (FEC) encoding / decoding of the transmission channel, interleaving, rate matching, mapping to physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 416 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols can then be divided into parallel streams. Each stream can then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time domain and / or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator 474 may be used to determine coding and modulation schemes, as well as for spatial processing. The channel estimates may be derived from a reference signal and / or channel condition feedback sent by the tx / rx node 450. Each spatial stream may then be provided to a different antenna 420 via a separate transmitter 418TX. Each transmitter 418TX may modulate an RF carrier with a respective spatial stream for transmission.

[0067] At the TX / RX node 450, each receiver 454RX receives a signal through its respective antenna 452. Each receiver 454RX recovers information modulated onto an RF carrier and provides the information to a receive (RX) processor 456. The TX processor 468 and the RX processor 456 implement layer 1 functions associated with various signal processing functions. The RX processor 456 can perform spatial processing on the information to recover any spatial stream destined for the TX / RX node 450. If multiple spatial streams are destined for the TX / RX node 450, they can be combined into a single OFDM symbol stream by the RX processor 456. The RX processor 456 then converts the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols and reference signals on each subcarrier are recovered and demodulated by determining the most likely signal constellation point sent by the TX / RX node 410. These soft decisions can be based on the channel estimates calculated by the channel estimator 458. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by the TX / RX node 410. The data and control signals are then provided to the controller / processor 459, which implements layer 4 and layer 2 functions.

[0068] The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer readable medium. In the UL, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 459 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0069] Similar to the functions described in conjunction with DL transmission of the TX / RX node 410, the controller / processor 459 provides RRC layer functions associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functions associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functions associated with transmission of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; MAC layer functions associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs to TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0070] Channel estimates derived from a reference signal by the channel estimator 458 or feedback sent by the TX / RX node 410 may be used by the TX processor 468 to select appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the TX processor 468 may be provided to different antennas 452 via separate transmitters 454TX. Each transmitter 454TX may modulate an RF carrier with a respective spatial stream for transmission.

[0071] UL transmissions are processed at TX / RX node 410 in a manner similar to that described in conjunction with the receiver functionality at TX / RX node 450. Each receiver 418RX receives a signal through its respective antenna 420. Each receiver 418RX recovers information modulated onto an RF carrier and provides the information to a RX processor 470.

[0072] The controller / processor 475 may be associated with a memory 476 that stores program codes and data. The memory 476 may be referred to as a computer readable medium. In the UL, the controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets from the tx / rx node 450. The IP packets from the controller / processor 475 may be provided to the EPC 160. The controller / processor 475 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0073] In an embodiment, at least one of the TX processor 468, the RX processor 456, and the controller / processor 459 may be configured to perform operations related to Figure 1 Aspects related to components 121, 125 and / or 127.

[0074] In an embodiment, at least one of the TX processor 416, the RX processor 470, and the controller / processor 475 may be configured to perform operations related to Figure 1 Aspects related to components 121, 125 and / or 127.

[0075] refer to Figure 5 and 6 , the sidelink relay communication scenarios 500, 602, and / or 604 include communication via a sidelink relay. As described above, the sidelink communication generally includes any type of D2D communication. D2D communication can be used for applications such as, but not limited to, vehicle-to-everything (V2X) or vehicle-to-any other device type communication, sensor networks, public safety-related communication services with limited infrastructure availability, or any other such type of application.

[0076] In the sidelink relay communication scenarios 500, 602, and / or 604, the relay UE 104a may establish multi-link communication with one or more base stations 102a and / or 102b via two or more communication links, the communication links including at least one direct link and at least one indirect link via a sidelink with a remote UE 104b. In the first case, for example, in the sidelink relay communication scenarios 500 and 602, the sidelink relay UE 104a communicates directly with the base station 102a via a first access link (AL) 120a, and indirectly communicates with the base station 102a via a sidelink 158a of the remote UE 104b having a second access link 120b with the base station 102a.

[0077] Typically, an access link such as access link 120a or 120b is a communication link between a corresponding UE and a corresponding base station (or gNB), which may also be referred to as a Uu interface in 4G LTE and / or 5G NR technology. Typically, a side link 158a is a communication link between UEs, which may be referred to as a PC5 interface in 4G LTE and / or 5G NR technology. In any case, the side link relay communication scenarios 500, 602, and / or 604 may be used to improve diversity, for example, by sending the same data over two links (access link and side link), and / or to improve throughput, for example, by sending different, independent data on each link. In one embodiment, in a mmW system, this type of multi-link communication may be implemented between UEs and / or between a corresponding UE and a corresponding base station / gNB using multiple transmit / receive beams and multiple antenna panels (subarrays).

[0078] In addition, in a second case, such as in a sidelink relay communication scenario 604, a relay UE 104a can establish multiple links with multiple base stations 102a and 102b, which can be referred to as a multiple transmit-receive point (multi-TRP) architecture. In this case, the relay UE 104a communicates directly with the base station 102a via a first access link (AL) 120a, and indirectly communicates with the base station 102b via a side link 158a of a remote UE 104b having a second access link 120b with the base station 102b. In addition, in this case, the base stations 102a and 102b can exchange communications via a backhaul link 134a.

[0079] Furthermore, in the sidelink relay communication scenarios 500, 602, and / or 604, the communications exchanged between the base station 102a / 102b, the relay UE 104a, and the remote UE 104b may be uplink (UL) communications 502 and / or downlink (DL) communications 504 (see Figure 5 ).

[0080] In some embodiments, a downlink grant including a first CC set and a sidelink grant including a second CC set (e.g., mode 1) can be combined into a single control message, or kept separate. A downlink grant including a first CC set can schedule downlink data transmission from a base station 102 (e.g., gNb) to a relay UE 104a in one or more CCs, and a sidelink grant including a second CC set can schedule data relay received from the base station 102 to a remote UE 104b. A coupled grant can be formed by combining downlink and sidelink grants. In some scenarios, the content of the downlink transmission and the content of the sidelink relay transmission may be the same. However, in some scenarios, MAC control elements (MAC-CEs) may be added or deleted, or padding may be added or deleted if the transport block size (TBS) does not match, but the content of the downlink and relay transmissions may overlap significantly.

[0081] In some aspects, a negative acknowledgement (NACK) for a physical downlink shared channel (PDSCH) may cancel a sidelink grant to avoid relaying corrupted data received by the remote UE 104b on the downlink. Additionally, a sidelink grant that allocates resources on the sidelink for relay purposes may have over-allocated resources to accommodate potential sidelink relay retransmissions, and an acknowledgement indicating successful delivery on the sidelink may cancel any unused portion of the over-allocated sidelink resources.

[0082] With regard to multi-CC grants, both downlink grants and sidelink grants can schedule multiple CCs. Since both downlink and sidelink grants schedule multiple CCs, grants can be combined, because the data received corresponding to the downlink grant can be relayed to the remote UE 104b on the sidelink, and it may have technical benefits to receive the sidelink grant while receiving the downlink grant. However, combining downlink and sidelink grants may result in a larger DCI size. Therefore, UEs and relay UEs can benefit in particular from the technology for implicitly defining the sidelink grant and thereby deriving the sidelink grant from the downlink grant. That is, in order to mitigate the increase in the DCI size, the relay UE can implicitly derive the sidelink grant from the downlink grant. In some aspects, the mapping can be one-to-one, one-to-many, or many-to-one (e.g., it can be pre-configured or indicated in the DCI).

[0083] In an example, the relay UE 104a may consistently have a designated set of resources. The relay UE 104a may be configured to relay information received on the downlink from the base station 102 to the remote UE 104b using the designated resources. Therefore, the relay UE 104a may not require an explicit sidelink grant indicating which resource to use to relay data to the remote UE 104b. In addition, if the sidelink component carrier is not explicitly included in the grant received by the relay UE 104a from the base station 102, the mapping between the downlink component carrier and the sidelink component carrier may be used to derive the sidelink component carrier.

[0084] In addition, if the relay UE fails to correctly receive the downlink data, it may not relay the downlink data to the remote UE and may cancel the corresponding sidelink grant. In some aspects, variable-sized DCI and / or sidelink control information (SCI) may be allowed based on the number of scheduled CCs or grants. If the maximum number of CCs is not scheduled, this may result in increased complexity but reduced overhead. For example, two-stage DCI / SCI may be used with a first stage of fixed size including variable-sized indications.

[0085] In some aspects, the fully coupled (e.g., combined downlink and sidelink grants have the same payload) scenario with a single CC can be divided into multiple cases. In the first example of per-CC or grant coupling, each downlink payload on a specific CC can be relayed on the corresponding sidelink grant. In this example, one-to-one, one-to-many, and many-to-one mappings can be implemented. In particular, one-to-many mappings can correspond to payload replication, and many-to-one mappings can correspond to cascaded payloads. In a further example, a first SCI grant can be used to relay downlink packets in a first CC, and a second SCI grant can be used to relay downlink packets in a second CC. In a further example, downlink data on a first CC of a first downlink CC set can be relayed to a remote UE 104b on a second CC of a second sidelink CC set, and uplink data CC on a second CC of a second sidelink CC set can be relayed to a base station 102 on a first CC of a first downlink CC set.

[0086] That is, in a specific multi-CC transmission scenario where downlink transmission to a relay UE 104b can be performed in multiple CCs, it can be determined in the absence of a large DCI, how the received data is to be relayed to a remote UE 104b. In a first example of a method for determining that downlink data is to be relayed to a remote UE 104b, the relay UE 104a can use the data received in the downlink CC and relay the data using an implicit sidelink grant associated with the downlink CC in which the data is received from the base station 102. That is, the sidelink grant can be implicitly derived from the downlink CC. Therefore, there may be an association between the downlink CC and the sidelink grant. In particular, there may be a one-to-many mapping / association corresponding to data replication, that is, data received in one downlink CC can be relayed multiple times using multiple implicitly derived sidelink grants. There may also be a many-to-one mapping corresponding to data concatenation, that is, data received in multiple downlink CCs can be combined and relayed using one sidelink grant.

[0087] In a further aspect, the bit set in all downlink payloads can be relayed on the sidelink grant set, but these bits can be re-divided. For example, relay UE 104a can combine the payloads in all CCs and relay them using the division rule across CCs. In an example of determining the mode of relaying downlink data received on multiple downlink CCs to remote UE 104b, relay UE 104a can combine all downlink data received on multiple downlink CCs and relay data using the repetition of the combined data granted by multiple sidelinks. For example, relay UE 104a can receive 1K bits in the first downlink CC and 1K bits in the second downlink CC. Relay UE 104a can combine the two to obtain 2K bits, and relay 0.5K bits using the first sidelink grant and relay 1.5K bits using the second sidelink grant.

[0088] refer to Figure 7 , the example method 1000 of wireless communication may be performed by a relay UE 104a, which may include the following: Figure 1 , 4 or one or more components discussed in 10, and which may be as described above with respect to Figure 5 and 6 The discussed multi-CC authorization technology operates.

[0089] At 702, method 700 includes receiving a first plurality of component carrier grants from a network entity, the first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel. For example, in one aspect, relay UE 104a may operate one or any combination of antenna 1065, RF front end 1088, transceiver 1002, processor 1012, memory 1016, modem 1040, or relay multi-CC communication component 121 to receive a first plurality of component carrier grants from a network entity, the first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel.

[0090] At 704, the method 700 includes identifying a second plurality of component carrier grants based on the first plurality of component carrier grants, the second plurality of component carrier grants being associated with the second communication channel and including the second plurality of component carriers. For example, in one aspect, the relay UE 104a may operate one or any combination of the transceiver 1002, the processor 1012, the memory 1016, the modem 1040, or the relay multi-CC communication component 121 to determine a second plurality of component carrier grants based on the first plurality of component carrier grants, the second plurality of component carrier grants being associated with the second communication channel and including the second plurality of component carriers.

[0091] At 706, the method 700 includes receiving data on the first plurality of component carriers in resources corresponding to the first plurality of component carrier grants. For example, in an aspect, the relay UE 104a may operate one or any combination of the antenna 1065, the RF front end 1088, the transceiver 1002, the processor 1012, the memory 1016, the modem 1040, or the relay multi-CC communication component 121 to receive data on the first plurality of component carriers in resources corresponding to the first plurality of component carrier grants.

[0092] At 708, method 700 includes transmitting the received data to the remote UE in the second plurality of component carriers in resources corresponding to the second plurality of component carrier grants. For example, in an aspect, relay UE 104a may operate one or any combination of antenna 1065, RF front end 1088, transceiver 1002, processor 1012, memory 1016, modem 1040, or relay multi-CC communication component 121 to transmit the received data to the remote UE in the second plurality of component carriers in resources corresponding to the second plurality of component carrier grants.

[0093] In some implementations, the first plurality of component carrier grants may correspond to downlink transmissions and the second plurality of component carrier grants may correspond to sidelink transmissions.

[0094] In some implementations, identifying the second plurality of component carrier grants may further include a mapping of the second plurality of component carrier grants to the first plurality of component carrier grants.

[0095] In some implementations, the first plurality of component carrier grants may correspond to downlink grants defined in a DCI, and the size of the DCI may be based on the number of component carriers per plurality of component carrier grants.

[0096] In some implementations, method 700 may further include identifying a size of the SCI based on a number of component carriers granted per a second plurality of component carriers, wherein sending in the second plurality of component carriers may include sending to the remote UE via the SCI in one or more component carriers in the second plurality of component carriers.

[0097] In some implementations, method 700 may further include receiving data on the PDSCH, sending a NACK in response to receiving the data on the PDSCH, and terminating a second plurality of component carrier grants associated with the PDSCH.

[0098] In some implementations, the first plurality of component carrier grants may be combined with the second plurality of component carrier grants into a single grant associated with respective downlink payloads and sidelink grants.

[0099] In some embodiments, downlink transmissions on a first component carrier in the first plurality of component carriers may be relayed to a remote UE using a first sidelink grant associated with one of the second plurality of component carriers; and downlink transmissions on a second component carrier in the first plurality of component carriers may be relayed to the remote UE using a second sidelink grant associated with one of the second plurality of component carriers.

[0100] In some embodiments, method 700 may further include identifying a partition of data received on the first plurality of component carriers, and relaying a first portion of the partition using one of the plurality of second component carriers and relaying a second portion of the partition using another of the plurality of second component carriers.

[0101] In some implementations, the first communication channel may correspond to a PDSCH and the second communication channel may correspond to a PSSCH.

[0102] refer to Figure 8 , the example method 800 of wireless communication may be performed by a remote UE 104b, which may include the following: Figure 1 , 4 or one or more components discussed in 10, and which may be as described above with respect to Figure 5 and 6The discussed multi-CC authorization technology operates.

[0103] At 802, method 800 includes receiving, from a relay UE on a communication channel, data in resources corresponding to a plurality of component carrier grants, in a plurality of component carriers, the plurality of component carrier grants derived from different plurality of component carrier grants including different plurality of component carriers. For example, in one aspect, remote UE 104b may operate one or any combination of antenna 1065, RF front end 1088, transceiver 1002, processor 1012, memory 1016, modem 1040, or remote communication component 125 to receive, from a relay UE on a communication channel, data in resources corresponding to a plurality of component carrier grants, in a plurality of component carriers, the plurality of component carrier grants derived from different plurality of component carrier grants including different plurality of component carriers.

[0104] At 804, method 800 includes sending different data on the sidelink communication channel to the relay UE on the communication channel. For example, in one aspect, the remote UE 104b can operate one or any combination of the transceiver 1002, the processor 1012, the memory 1016, the modem 1040, or the remote communication component 125 to send different data on the sidelink communication channel to the relay UE on the communication channel.

[0105] In some implementations, a different plurality of component carriers may correspond to downlink transmissions and a plurality of component carriers may correspond to sidelink transmissions.

[0106] In some implementations, the plurality of component carrier grants may be based on a mapping of the first plurality of component carrier grants to the second plurality of component carrier grants.

[0107] In some implementations, the size of the SCI may be based on the number of component carriers per plurality of component carrier grants, and the method 800 may further include receiving at least the plurality of component carrier grants including receiving at least the plurality of component carrier grants via the SCI to the remote UE.

[0108] In some embodiments, method 800 may further include receiving, from the relay UE, a downlink transmission on a first component carrier of the plurality of component carriers using a first sidelink grant associated with one of the plurality of component carriers, and receiving, from the relay UE, a downlink transmission on a second component carrier of the plurality of component carriers that is relayed to the remote UE using a second sidelink grant associated with one of the plurality of component carriers.

[0109] In some implementations, the communication channel may correspond to a PSCCH.

[0110] refer to Fig. 9, the example method 900 of wireless communication may be performed by a network entity, such as a base station 102, which may include Figure 1 , 4 or one or more components discussed in 11, and which may be as described above with respect to Figure 5 and 6 The discussed multi-CC authorization technology operates.

[0111] At 902, method 900 includes determining a first plurality of component carrier grants, the first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel, the first plurality of component carrier grants used to determine a second plurality of component carrier grants associated with a second communication channel, and including the second plurality of component carriers. For example, in one aspect, network entity 102 may operate one or any combination of a modem or processor, a receiver chain component, a memory, and / or a base station communication component 127, which may be executed to determine a first plurality of component carrier grants, the first plurality of component carrier grants including a first plurality of component carriers associated with a first communication channel, the first plurality of component carrier grants used to determine a second plurality of component carrier grants associated with a second communication channel, and including the second plurality of component carriers.

[0112] At 904, method 900 includes sending a first plurality of component carrier grants to the relay UE on the first communication channel. For example, in one aspect, network entity 102 may operate one or any combination of a modem, a base station communication component 127, a processor, a receiver chain component, and / or a memory thereof, which may be executed to send a first plurality of component carrier grants to the relay UE on the first communication channel.

[0113] In some implementations, the second plurality of component carrier grants may also include a mapping of the second plurality of component carrier grants to the first plurality of component carrier grants.

[0114] In some implementations, the size of the DCI may be based on the number of component carriers granted per multiple component carriers.

[0115] In some implementations, the first communication channel may correspond to a PDSCH.

[0116] In some implementations, the second communication channel may correspond to a PSSCH.

[0117] refer to Fig.10, an example of an implementation of a UE 104 including a relay UE 104a and / or a remote UE 104b may include various components, some of which have been described above and are further described herein, including components such as one or more processors 1012 and memory 1016 communicating via one or more buses 1044 and a transceiver 1002, which may operate in conjunction with a modem 1040 and / or a relay multi-CC communication component 121 and / or a remote communication component 125 to receive a multi-CC grant.

[0118] In one aspect, the one or more processors 1012 may include a modem 1040 and / or may be part of a modem 1040 using one or more modem processors. Thus, various functions associated with the relay multi-CC communication component 121 and / or the remote communication component 125 may be included in the modem 1040 and / or the processor 1012, and may be performed by a single processor in one aspect, while in other aspects, different functions may be performed by a combination of two or more different processors. For example, in one aspect, the one or more processors 1012 may include any one or any combination of a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiver processor, or a transceiver processor. In other aspects, some features of the one or more processors 1012 and / or the modem 1040 associated with the relay multi-CC communication component 121 and / or the remote communication component 125 may be performed by the transceiver 1002.

[0119] In addition, the memory 1016 can be configured to store data used herein and / or local versions of the application 1075 or the communication component 1042 and / or one or more subcomponents executed by at least one processor 1012. The memory 1016 may include any type of computer-readable medium that can be used by a computer or at least one processor 1012, such as a random access memory (RAM), a read-only memory (ROM), a tape, a disk, an optical disk, a volatile memory, a non-volatile memory, and any combination thereof. In one aspect, for example, the memory 1016 may be a non-transitory computer-readable storage medium that stores one or more computer executable codes and / or data associated therewith that define the relay multi-CC communication component 121 and / or the remote communication component 125 and / or one or more of its subcomponents when the UE 104 is operating at least one processor 1012 to execute the relay multi-CC communication component 121 and / or the remote communication component 125 and / or one or more of its subcomponents.

[0120] The transceiver 1002 may include at least one receiver 1006 and at least one transmitter 1008. The receiver 1006 may include hardware and / or software executable by a processor to receive data, the code including instructions and stored in a memory (e.g., a computer-readable medium). The receiver 1006 may be, for example, a radio frequency (RF) receiver. In one aspect, the receiver 1006 may receive a signal transmitted by at least one base station 102. In addition, the receiver 1006 may process such received signals and may also obtain measurements of the signal, such as, but not limited to, Ec / Io, signal-to-noise ratio (SNR), reference signal received power (RSRP), received signal strength indicator (RSSI), etc. The transmitter 1008 may include hardware and / or software executable by a processor to send data, the code including instructions and stored in a memory (e.g., a computer-readable medium). Suitable examples of the transmitter 1008 may include, but are not limited to, an RF transmitter.

[0121] In addition, in one aspect, the UE 104 may include an RF front end 1088 that may operate in communication with one or more antennas 1065 and the transceiver 1002 to receive and send radio transmissions, such as wireless communications sent by at least one base station 102 or wireless transmissions sent by the UE 104. The one or more antennas 1065 may include one or more antenna panels and / or subarrays, which may be used for beamforming, for example. The RF front end 1088 may be connected to the one or more antennas 1065 and may include one or more low noise amplifiers (LNAs) 1090, one or more switches 1092, one or more power amplifiers (PAs) 1098, and one or more filters 1096 for sending and receiving RF signals.

[0122] In one aspect, the LNAs 1090 can amplify received signals at a desired output level. In one aspect, each LNA 1090 can have specified minimum and maximum gain values. In one aspect, the RF front end 1088 can use one or more switches 1092 to select a particular LNA 1090 and its specified gain value based on the desired gain value for a particular application.

[0123] In addition, for example, the RF front end 1088 can use one or more PAs 1098 to amplify signals for RF output at a desired output power level. In one aspect, each PA 1098 can have a specified minimum and maximum gain value. In one aspect, the RF front end 1088 can use one or more switches 1092 to select a particular PA 1098 and its specified gain value based on the desired gain value for a particular application.

[0124] In addition, for example, the RF front end 1088 can use one or more filters 1096 to filter the received signal to obtain an input RF signal. Similarly, in one aspect, for example, a corresponding filter 1096 can be used to filter the output from the corresponding PA 1098 to produce an output signal for transmission. In one aspect, each filter 1096 can be connected to a specific LNA 1090 and / or PA 1098. In one aspect, the RF front end 1088 can use one or more switches 1092 to select a transmit or receive path using a specified filter 1096, LNA 1090, and / or PA 1098 based on a configuration specified by the transceiver 1002 and / or the processor 1012.

[0125] Thus, the transceiver 1002 can be configured to transmit and receive wireless signals through one or more antennas 1065 via the RF front end 1088. In one aspect, the transceiver can be tuned to operate at a specified frequency so that the UE 104 can communicate with, for example, one or more base stations 102 or one or more cells associated with the one or more base stations 102. In one aspect, for example, the modem 1040 can configure the transceiver 1002 to operate at a specified frequency and power level based on the UE configuration of the UE 104 and the communication protocol used by the modem 1040.

[0126] In one aspect, the modem 1040 can be a multi-band multi-mode modem that can process digital data and communicate with the transceiver 1002 so that the digital data is sent and received using the transceiver 1002. In one aspect, the modem 1040 can be multi-band and configured to support multiple frequency bands of a specific communication protocol. In one aspect, the modem 1040 can be multi-mode and configured to support multiple operating networks and communication protocols. In one aspect, the modem 1040 can control one or more components (e.g., RF front end 1088, transceiver 1002) of the UE 104 to achieve signal transmission and / or reception from the network based on a specified modem configuration. In one aspect, the modem configuration can be based on the mode of the modem and the frequency band used. In another aspect, the modem configuration can be based on the UE configuration information associated with the UE 104 provided by the network during cell selection and / or cell reselection.

[0127] In one aspect, processor 1012 may correspond to combining Figure 4 Similarly, the memory 1016 may correspond to the one or more processors described in conjunction with the UE. Figure 4 The memory described by the UE in .

[0128] refer to Fig.11, an example of an implementation of a base station 102 (e.g., base stations 102, 102a, and / or 102b as described above) may include various components, some of which have been described above, but include components such as one or more processors 1112 and memory 1116 and a transceiver 1102 that communicate via one or more buses 1144, which may operate in conjunction with a modem 1440 and a base station communication component 127 to transmit multi-CC grant information.

[0129] The transceiver 1102, receiver 1106, transmitter 1108, one or more processors 1112, memory 1116, applications 1475, bus 1144, RF front end 1188, LNA 1190, switch 1492, filter 1496, PA 1498 and one or more antennas 1465 may be the same or similar to the corresponding components of UE 104 described above, but are configured or otherwise programmed for base station operation rather than UE operation.

[0130] In one aspect, processor 1112 may correspond to combining Figure 4 Similarly, the memory 1116 may correspond to the one or more processors described in the base station in the embodiment of the present invention. Figure 4 The memory described by the base station in.

[0131] Some additional examples

[0132] Aspects described herein additionally include one or more of the following aspect examples described in the following numbered clauses.

[0133] A method for wireless communication at a relay user equipment (UE), comprising:

[0134] receiving, from a network entity, a first plurality of component carrier grants comprising a first plurality of component carriers associated with a first communication channel;

[0135] determining a second plurality of component carrier grants based on the first plurality of component carrier grants, the second plurality of component carrier grants being associated with a second communication channel and comprising a second plurality of component carriers;

[0136] receiving data on the first plurality of component carriers in resources corresponding to the first plurality of component carrier grants; and

[0137] The received data is sent to the remote UE in the second plurality of component carriers in resources corresponding to the second plurality of component carrier grants.

[0138] 2. A method as described in clause 1, wherein the first plurality of component carrier grants correspond to downlink transmissions and the second plurality of component carrier grants correspond to sidelink transmissions.

[0139] 3. A method as described in any of clauses 1 to 2, wherein determining the second plurality of component carrier grants further comprises mapping the second plurality of component carrier grants to the first plurality of component carrier grants.

[0140] 4. A method according to any one of clauses 1 to 3, wherein the first plurality of component carrier grants corresponds to downlink grants defined in downlink control information (DCI), and wherein the size of the DCI is based on the number of component carriers per plurality of component carrier grants.

[0141] 5. The method according to any one of clauses 1 to 4, further comprising:

[0142] A size of sidelink control information (SCI) is determined based on a number of component carriers granted per a second plurality of component carriers, wherein transmitting in the second plurality of component carriers includes transmitting to the remote UE via the SCI in one or more component carriers in the second plurality of component carriers.

[0143] 6. The method according to any one of clauses 1 to 5, further comprising:

[0144] receiving data on a physical downlink shared channel (PDSCH);

[0145] sending a negative acknowledgement (NACK) in response to receiving data on the PDSCH; and

[0146] A second plurality of component carrier grants associated with the PDSCH is terminated.

[0147] 7. A method as described in any of clauses 1 to 6, wherein the first plurality of component carrier grants are combined with the second plurality of component carrier grants into a single grant associated with respective downlink payloads and sidelink grants.

[0148] 8. A method according to any one of clauses 1 to clause 7, wherein downlink transmissions on a first component carrier in the first plurality of component carriers are relayed to a remote UE using a first sidelink grant associated with one of the second plurality of component carriers, and downlink transmissions on a second component carrier in the first plurality of component carriers are relayed to the remote UE using a second sidelink grant associated with one of the second plurality of component carriers.

[0149] 9. The method according to any one of clauses 1 to 8, further comprising:

[0150] determining a partition of data received on a first plurality of component carriers; and

[0151] A first portion of the partition is relayed using one of the plurality of second component carriers and a second portion of the partition is relayed using another of the plurality of second component carriers.

[0152] 10. A method according to any one of clauses 1 to 9, wherein the first communication channel corresponds to a physical downlink shared channel (PDSCH) and the second communication channel corresponds to a physical sidelink shared channel (PSSCH).

[0153] 11. A method of wireless communication at a remote user equipment (UE), comprising:

[0154] Receiving data in multiple component carriers in resources corresponding to multiple component carrier grants from a relay UE on a communication channel, the multiple component carrier grants being derived from different multiple component carrier grants including different multiple component carriers; and sending different data on a sidelink communication channel to the relay UE on the communication channel.

[0155] 12. A method as described in clause 11, wherein the different plurality of component carriers correspond to downlink transmissions and the plurality of component carriers correspond to sidelink transmissions.

[0156] 13. A method as described in any of clauses 11 to 12, wherein the plurality of component carrier grants is based on a mapping of a first plurality of component carrier grants to a second plurality of component carrier grants.

[0157] 14. A method as claimed in any one of clauses 11 to 13, wherein the size of the sidelink control information (SCI) is based on the number of component carriers granted per the plurality of component carriers, the method further comprising:

[0158] Receiving at least the plurality of component carrier grants includes receiving at least the plurality of component carrier grants via an SCI to the remote UE.

[0159] 15. A method according to any one of clauses 11 to 14, further comprising:

[0160] receiving, from the relay UE, a downlink transmission on a first component carrier among the plurality of component carriers using a first sidelink grant associated with the first component carrier among the plurality of component carriers; and

[0161] A downlink transmission on a second component carrier of the plurality of component carriers is received from the relay UE to the remote UE using a second sidelink grant associated with a component carrier of the plurality of component carriers.

[0162] 16. An apparatus for wireless communication, comprising a transceiver; a memory configured to store instructions; and at least one processor communicatively coupled to the transceiver and the memory, wherein the at least one processor is configured to perform the operations of the method according to any one of clauses 1 to 15.

[0163] 17. An apparatus for wireless communications, comprising means for performing the operations of the method of any one of clauses 1 to 15.

[0164] 18. A non-transitory computer-readable medium comprising code executable by one or more processors to perform the operations of the method of any one of clauses 1 to 15.

[0165] 19. A method for wireless communication at a network entity, comprising:

[0166] A first plurality of component carrier grants is determined that includes a first plurality of component carriers associated with a first communication channel, the first plurality of component carrier grants being used to determine a second plurality of component carrier grants associated with a second communication channel and including the second plurality of component carriers.

[0167] A first plurality of component carrier grants is sent to the relay UE on a first communication channel.

[0168] 20. The method of clause 19, wherein the second plurality of component carrier grants further comprises mapping the second plurality of component carrier grants to the first plurality of component carrier grants.

[0169] 21. A method as described in any of clauses 19 to 20, wherein the size of the DCI is based on the number of component carriers granted per plurality of component carriers.

[0170] 22. A method as described in any one of clauses 19 to 21, wherein the first communication channel corresponds to a PDSCH.

[0171] 23. A method according to any one of clauses 19 to 22, wherein the second communication channel corresponds to a PSSCH.

[0172] 24. An apparatus for wireless communication, comprising a transceiver; a memory configured to store instructions; and at least one processor communicatively coupled to the transceiver and the memory, wherein the at least one processor is configured to perform the operations of the method according to any one of clauses 19 to 23.

[0173] 25. An apparatus for wireless communications, comprising means for performing the operations of the method of any one of clauses 19 to 23.

[0174] 26. A non-transitory computer-readable medium comprising code executable by one or more processors to perform the operations of the method of any of clauses 19 to 23.

[0175] It should be understood that the specific order or hierarchy of blocks in the disclosed process / flowchart is an illustration of an exemplary method. Based on design preferences, it is understood that the specific order or hierarchy of blocks in the process / flowchart can be rearranged. In addition, some blocks can be combined or omitted. The accompanying method claims present the elements of each block in an exemplary order, and are not meant to be limited to the specific order or hierarchy presented.

[0176] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but to conform to the full scope consistent with the language claims, wherein the elements mentioned in the singular are not intended to represent "one and only one", unless specifically so stated, but "one or more". The word "exemplary" means "used as an example, instance or illustration" in this article. Any aspect described herein as "exemplary" is not necessarily interpreted as being superior or better than other aspects. Unless otherwise specifically stated, the term "some" refers to one or more. For example, a combination of "at least one of A, B or C", "one or more of A, B or C", "at least one of A, B and C", "one or more of A, B and C", "A, B, C or any combination thereof", including any combination of A, B and / or C, and may include multiple A, multiple B or multiple C. Specifically, for example, combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B and C," "one or more of A, B, and C," "A, B, C, or any combination thereof" may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, wherein any such combination may include one or more members of A, B, or C. All structural and functional equivalents to the elements of the various aspects described in the present disclosure that are known or later become known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be included in the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is expressly recited in the claims. Words such as "module," "mechanism," "element," "device," etc. cannot replace the word "unit." Therefore, any claim element should not be interpreted as means plus function unless the element is expressly recited using the phrase "unit for..."

Claims

1. A method for wireless communication at a relay user equipment (UE), include: receiving, from a network entity, a first plurality of component carrier grants comprising a first plurality of component carriers associated with a first communication channel; determining a second plurality of component carrier grants based on the first plurality of component carrier grants, the second plurality of component carrier grants being associated with a second communication channel and comprising a second plurality of component carriers; receiving data on the first plurality of component carriers in resources corresponding to the first plurality of component carrier grants; transmitting the received data to the remote UE in the second plurality of component carriers in resources corresponding to the second plurality of component carrier grants; determining partitions of the data received on the first plurality of component carriers; as well as A first portion of the partition is relayed using one of the second plurality of component carriers and a second portion of the partition is relayed using another of the second plurality of component carriers.

2. The method according to claim 1, in, The first plurality of component carrier grants correspond to downlink transmissions and the second plurality of component carrier grants correspond to sidelink transmissions.

3. The method according to claim 2, in, Determining the second plurality of component carrier grants further includes mapping the second plurality of component carrier grants to the first plurality of component carrier grants.

4. The method according to claim 3, in, The first plurality of component carrier grants corresponds to downlink grants defined in downlink control information (DCI), and wherein a size of the DCI is based on a number of component carriers per plurality of component carrier grants.

5. The method according to claim 1, further comprising: include: determining a size of sidelink control information (SCI) based on a number of component carriers granted per said second plurality of component carriers, The sending in the second plurality of component carriers includes sending to the remote UE via the SCI in one or more component carriers in the second plurality of component carriers.

6. The method according to claim 1, further comprising: include: receiving data on a physical downlink shared channel (PDSCH); sending a negative acknowledgement (NACK) in response to receiving data on the PDSCH; as well as The second plurality of component carrier grants associated with the PDSCH are terminated.

7. The method according to claim 1, in, The first plurality of component carrier grants and the second plurality of component carrier grants are combined into a single grant associated with respective downlink payloads and sidelink grants.

8. The method according to claim 1, in, Downlink transmissions on a first component carrier in the first plurality of component carriers are relayed to the remote UE using a first sidelink grant associated with one of the second plurality of component carriers, and downlink transmissions on a second component carrier in the first plurality of component carriers are relayed to the remote UE using a second sidelink grant associated with one of the second plurality of component carriers.

9. The method according to claim 1, in, The first communication channel corresponds to a physical downlink shared channel (PDSCH), and the second communication channel corresponds to a physical sidelink shared channel (PSSCH).

10. A method of wireless communication at a remote user equipment (UE), include: receiving, from the relay UE on a communication channel, data in a plurality of component carriers in resources corresponding to a plurality of component carrier grants, the plurality of component carrier grants being derived from different plurality of component carrier grants including different plurality of component carriers, wherein the data comprises a first portion of a partition using one of the plurality of component carriers and a second portion of the partition using another of the plurality of component carriers; and Different data on the sidelink communication channel is sent to the relay UE on the communication channel.

11. The method according to claim 10, in, The different plurality of component carriers correspond to downlink transmissions and the plurality of component carriers correspond to sidelink transmissions.

12. The method according to claim 11, in, The plurality of component carrier grants is based on a mapping of a first plurality of component carrier grants to a second plurality of component carrier grants.

13. The method according to claim 10, in, The size of the sidelink control information (SCI) is based on the number of component carriers granted per the plurality of component carriers, the method further comprising: Receiving at least the plurality of component carrier grants includes receiving at least the plurality of component carrier grants via an SCI to the remote UE.

14. The method of claim 10, further comprising: include: receiving, from the relay UE, a downlink transmission on a first component carrier among the plurality of component carriers using a first sidelink grant associated with the first component carrier among the plurality of component carriers; as well as A downlink transmission on a second component carrier of the plurality of component carriers is received from the relay UE using a second sidelink grant associated with a component carrier of the plurality of component carriers that is relayed to the remote UE.

15. An apparatus for wireless communication, include: Transceiver; a memory configured to store instructions; as well as at least one processor communicatively coupled to the transceiver and the memory, wherein the at least one processor is configured to: receiving, from a network entity, a first plurality of component carrier grants comprising a first plurality of component carriers associated with a first communication channel; determining a second plurality of component carrier grants based on the first plurality of component carrier grants, the second plurality of component carrier grants being associated with a second communication channel and comprising a second plurality of component carriers; receiving data on the first plurality of component carriers in resources corresponding to the first plurality of component carrier grants; transmitting the received data to the remote UE in the second plurality of component carriers in resources corresponding to the second plurality of component carrier grants; determining partitions of the data received on the first plurality of component carriers; and A first portion of the partition is relayed using one of the second plurality of component carriers and a second portion of the partition is relayed using another of the second plurality of component carriers.

16. The device according to claim 15, in, The first plurality of component carrier grants correspond to downlink transmissions and the second plurality of component carrier grants correspond to sidelink transmissions.

17. The device according to claim 16, in, Determining the second plurality of component carrier grants further includes mapping the second plurality of component carrier grants to the first plurality of component carrier grants.

18. The device according to claim 17, in, The first plurality of component carrier grants corresponds to downlink grants defined in downlink control information (DCI), and wherein a size of the DCI is based on a number of component carriers per plurality of component carrier grants.

19. The device according to claim 16, in, The at least one processor is further configured to: determining a size of sidelink control information (SCI) based on a number of component carriers granted per said second plurality of component carriers, In order to transmit in the second plurality of component carriers, the at least one processor is further configured to: transmit to the remote UE via the SCI in one or more component carriers in the second plurality of component carriers.

20. The device according to claim 15, in, The at least one processor is further configured to: receiving data on a physical downlink shared channel (PDSCH); sending a negative acknowledgement (NACK) in response to receiving data on the PDSCH; and The second plurality of component carrier grants associated with the PDSCH are terminated.

21. The device according to claim 15, in, The first plurality of component carrier grants and the second plurality of component carrier grants are combined into a single grant associated with respective downlink payloads and sidelink grants.

22. The device according to claim 15, in, Downlink transmissions on a first component carrier in the first plurality of component carriers are relayed to the remote UE using a first sidelink grant associated with one of the second plurality of component carriers, and downlink transmissions on a second component carrier in the first plurality of component carriers are relayed to the remote UE using a second sidelink grant associated with one of the second plurality of component carriers.

23. The device of claim 15, in, The first communication channel corresponds to a physical downlink shared channel (PDSCH), and the second communication channel corresponds to a physical sidelink shared channel (PSSCH).

24. An apparatus for wireless communication, include: Transceiver; a memory configured to store instructions; as well as at least one processor communicatively coupled to the transceiver and the memory, wherein the at least one processor is configured to: receiving, from the relay UE on a communication channel, data in a plurality of component carriers in resources corresponding to a plurality of component carrier grants, the plurality of component carrier grants being derived from different plurality of component carrier grants including different plurality of component carriers, wherein the data comprises a first portion of a partition using one of the plurality of component carriers and a second portion of the partition using another of the plurality of component carriers; and Different data on the sidelink communication channel is sent to the relay UE on the communication channel.

25. The device according to claim 24, in, The different plurality of component carriers correspond to downlink transmissions and the plurality of component carriers correspond to sidelink transmissions.

26. The device according to claim 25, in, The plurality of component carrier grants is based on a mapping of a first plurality of component carrier grants to a second plurality of component carrier grants.

27. The device of claim 24, in, The size of the sidelink control information (SCI) is based on a number of component carriers granted per the plurality of component carriers, and wherein the at least one processor is further configured to: Receiving at least the plurality of component carrier grants includes receiving at least the plurality of component carrier grants via an SCI to a remote UE.

28. The device of claim 24, in, The at least one processor is further configured to: receiving, from the relay UE, a downlink transmission on a first component carrier among the plurality of component carriers using a first sidelink grant associated with the first component carrier among the plurality of component carriers; as well as A downlink transmission on a second component carrier of the plurality of component carriers is received from the relay UE using a second sidelink grant associated with a component carrier of the plurality of component carriers that is relayed to a remote UE.

Images