Techniques for sidelink carrier aggregation (CA) and cross-carrier scheduling indication in sidelink control information (SCI)

Abstract

The present disclosure relates to sidelink carrier aggregation and cross-carrier scheduling indication in sidelink control information (SCI). In one aspect, a sending UE may configure a multi-component carrier grant, which includes multiple component carriers for a physical sidelink shared channel (PSSCH). The sending UE may also send one or both of a first SCI set or a second SCI, each first SCI in the first SCI set including a single component carrier grant corresponding to one component carrier from the multi-component carrier grant and associated with scheduling information for the one component carrier, and the second SCI including the multi-component carrier grant and associated with scheduling information for multiple component carriers. In another aspect, a receiving UE may receive one or both of the transmitted first SCI set or the transmitted second SCI.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of the following applications: U.S. Provisional Patent Application No. 63 / 065,962, filed on August 14, 2020 and entitled “TECHNIQUES FOR SIDELINK CARRIER AGGREGATION (CA) AND CROSS-CARRIER SCHEDULING INDICATION IN SIDELINK CONTROL INFORMATION (SCI)”, and U.S. Patent Application No. 17 / 378,461, filed on July 16, 2021 and entitled “TECHNIQUES FOR SIDELINK CARRIER AGGREGATION (CA) AND CROSS-CARRIER SCHEDULING INDICATION IN SIDELINK CONTROL INFORMATION (SCI)”, the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] The present disclosure generally relates to communication systems, and more particularly, to sidelink carrier aggregation (CA) and cross-carrier scheduling indication in sidelink control information (SCI). Background Art

[0004] Wireless communication systems are widely deployed to provide various 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 in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution released by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., together with the Internet of Things (IoT)) and other requirements. 5GNR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Some aspects of 5GNR may be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements in 5G NR technology. These improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies.

[0006] Some wireless communication networks include device-to-device (D2D) communications, such as, but not limited to, vehicle-based communication devices that may communicate according 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 communicate with other devices, which may be collectively referred to as vehicle-to-everything (V2X) communications. Further improvements in multiple access and D2D technologies are desirable. Summary of the invention

[0007] A brief summary of one or more aspects is given below to provide a basic understanding of such aspects. This summary is not an extensive overview of all expected aspects, and is neither intended to identify the key or important elements of all aspects, nor to delineate 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 will be given later.

[0008] According to an example, a method for wireless communication at a transmitter includes: configuring a multi-component carrier grant for transmission to a receiver, the multi-component carrier grant including multiple component carriers for a physical sidelink shared channel (PSSCH). The method may also include: sending one or both of a first sidelink control information (SCI) set or a second SCI, each first SCI in the first SCI set including a single component carrier grant corresponding to one component carrier from the multi-component carrier grant and associated with scheduling information of the one component carrier, the second SCI including the multi-component carrier grant and associated with scheduling information of the multiple component carriers.

[0009] Another example of the subject matter described in the present disclosure may be implemented at an apparatus for wireless communication, the apparatus comprising a memory storing instructions and at least one processor. The at least one processor may be configured to execute the instructions to perform the following operations: configure a multi-component carrier grant for transmission to a receiver, the multi-component carrier grant comprising multiple component carriers for PSSCH. The at least one processor may also be configured to execute the instructions to perform the following operations: send one or both of a first SCI set or a second SCI, each first SCI in the first SCI set comprising a single component carrier grant corresponding to one component carrier from the multi-component carrier grant and associated with scheduling information for the one component carrier, the second SCI comprising the multi-component carrier grant and associated with scheduling information for the multiple component carriers.

[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 configuring a multi-component carrier grant for transmission to a receiver, the multi-component carrier grant comprising a plurality of component carriers for a PSSCH. The apparatus may also include: means for sending one or both of a first SCI set or a second SCI, each first SCI in the first SCI set comprising a single component carrier grant corresponding to one component carrier from the multi-component carrier grant and associated with scheduling information for the one component carrier, the second SCI comprising the multi-component carrier grant and associated with scheduling information for the plurality of component carriers.

[0011] Another example of the subject matter described in the present disclosure can be implemented at a computer-readable medium storing computer executable code, which, when executed by a processor, causes the processor to perform the following operations: configure a multi-component carrier grant for transmission to a receiver, the multi-component carrier grant including multiple component carriers for PSSCH. The processor can also execute the executable code to perform the following operations: send one or both of a first SCI set or a second SCI, each first SCI in the first SCI set including a single component carrier grant corresponding to one component carrier from the multi-component carrier grant and associated with scheduling information for the one component carrier, the second SCI including the multi-component carrier grant and associated with scheduling information for the multiple component carriers.

[0012] In another example, the present disclosure provides a method for wireless communication at a receiver, comprising: sending UE capability information indicating cross-carrier scheduling capability. The method may also include: receiving one or both of a first SCI set or a second SCI, each first SCI in the first SCI set including a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information of the one component carrier, and the second SCI including the multi-component carrier grant and associated with scheduling information of multiple component carriers.

[0013] Another example of the subject matter described in the present disclosure may be implemented at an apparatus for wireless communication, the apparatus comprising a memory storing instructions and at least one processor, the at least one processor being configured to execute the instructions. The at least one processor may be configured to execute the instructions to perform the following operations: send UE capability information indicating cross-carrier scheduling capability. The at least one processor may also be configured to execute the instructions to perform the following operations: receive one or both of a first SCI set or a second SCI, each first SCI in the first SCI set comprising a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information for the one component carrier, the second SCI comprising the multi-component carrier grant and associated with scheduling information for multiple component carriers.

[0014] Additional examples of the subject matter described in the present disclosure may be implemented at an apparatus for wireless communication, the apparatus comprising: a unit for sending UE capability information indicating cross-carrier scheduling capability. The apparatus may also include: a unit for receiving one or both of a first SCI set or a second SCI, each first SCI in the first SCI set including a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information for the one component carrier, and the second SCI including the multi-component carrier grant and associated with scheduling information for multiple component carriers.

[0015] Another example of the subject matter described in the present disclosure can be implemented at a computer-readable medium storing computer executable code, which, when executed by a processor, causes the processor to perform the following operations: send UE capability information indicating cross-carrier scheduling capability. The processor can also execute the executable code to perform the following operations: receive one or both of a first SCI set or a second SCI, each first SCI in the first SCI set including a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information of the one component carrier, and the second SCI including the multi-component carrier grant and associated with scheduling information of multiple component carriers.

[0016] To accomplish the foregoing and related purposes, one or more aspects include features fully described below and particularly pointed out in the claims. The following description and drawings set forth in detail certain illustrative features of one or more aspects. However, these features are indicative of only some of the various ways in which the principles of the various aspects may be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of an example of a wireless communication system and an access network.

[0018] Figure 2A It is for Figure 1 Schematic diagram of an example of a first 5G / NR frame used in communication between two communication nodes in a system.

[0019] Figure 2B It is for Figure 1 Schematic diagram of an example of downlink channels within a 5G / NR subframe used in communications between two of the communication nodes in a system.

[0020] Figure 2C It is for Figure 1 Schematic diagram of an example of a second 5G / NR frame used in communications between two communication nodes in a system.

[0021] Figure 2D It is for Figure 1 Schematic diagram of an example of uplink channels within a 5G / NR subframe used in communications between two of the communication nodes in a system.

[0022] Figure 3 is used in Figure 1 Schematic diagram of an example frame structure and resources for sidelink communication between two of the communication nodes in a system.

[0023] Figure 4 yes Figure 1 Schematic diagram of an example of hardware components of two communication nodes in a communication node system.

[0024] Figure 5 is available in Figure 1 Schematic diagram of an example sidelink relay communication configuration operating in a system.

[0025] Figure 6 is available in Figure 1 Schematic diagrams of two different examples of sidelink relay communication configurations operating in a system.

[0026] Figure 7 is available in Figure 1 Conceptual diagram of various cross-carrier scheduling scenarios operating in a system.

[0027] Figure 8 is available in Figure 1 Flowchart of another example method for performing wireless communications at a transmitter operating in a system.

[0028] Fig. 9 is available in Figure 1 A flow chart of a method for performing wireless communications at a receiver operating in a system.

[0029] Fig.10 is a block diagram of an example UE in accordance with various aspects of the present disclosure.

[0030] Fig.11 is a block diagram of an example base station in accordance with various aspects of the present disclosure. DETAILED DESCRIPTION

[0031] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of each configuration and is not intended to represent the only configuration in which the concepts described herein may be practiced. For the purpose of providing a comprehensive understanding of each concept, the detailed description includes specific details. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in the form of block diagrams in order to avoid obscuring such concepts.

[0032] In summary, the present disclosure relates to sidelink communications, which include a relay user equipment (UE) relaying communications from a base station to a remote UE on a sidelink, or relaying communications 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 UEs. 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.

[0033] In particular, the present disclosure relates to enhancements to sidelink communications, and in particular to cross-carrier scheduling indications in SCI. In a device-to-device (D2D) communication system operating in accordance with a new radio (NR) scheme (which may include a relay UE that communicates with both 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 a PSSCH and / or PSCCH may be aggregated to increase the total transmission bandwidth, and thus increase the data rate achievable on the above-mentioned communication channels (e.g., PSSCH and PSCCH). Each aggregated carrier may correspond to a CC. In addition, each CC may have a specific bandwidth and may not exceed a maximum number of aggregated carriers. Although carrier aggregation may be useful in high data rate applications in a D2D communication system, the implementation of carrier aggregation may result in increased complexity.

[0034] Therefore, the present disclosure reduces the implementation complexity of UEs during sidelink carrier aggregation by providing a technique for allowing various types of UEs within a communication network to effectively read cross-carrier scheduling of a carrier indicator field (CIF). The CIF that can be sent in the sidelink control information (SCI) can indicate on which carrier the scheduled resources are located. Therefore, in order to ensure that the UE can effectively read the CIF for multiple CC scheduling (e.g., one or more CCs), the sending UE can send a first SCI in each of these CCs, so that each first SCI indicates resource scheduling information in the CC in which the first SCI is sent. That is, each first SCI can be associated with a PSSCH in the same CC as the first SCI. The sending UE can also send a second SCI in a CC that may or may not be one of the multiple CCs, and the second SCI indicates resource scheduling information in all CCs in the multiple CCs. In other words, the second SCI can be associated with the PSSCH in all CCs. Similarly, the receiver UE can receive information sent by the sending UE in a similar manner.

[0035] The following is about Figure 1-11 These and other features of the present disclosure are discussed in detail.

[0036] Several aspects of the telecommunication system will now be presented with reference to various apparatuses and methods. These apparatuses and methods will be described in the following detailed description 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 such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0037] 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 chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other appropriate hardware configured to perform various functions described throughout the present disclosure. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, 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, threads of execution, processes, functions, etc.

[0038] Accordingly, 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 or encoded on a computer-readable medium as one or more instructions or codes. Computer-readable media include computer storage media. Storage media may be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, 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 that can be accessed by a computer in the form of instructions or data structures.

[0039] Figure 1is a schematic 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)).

[0040] In certain aspects, the relay UE 104a may include a relay communication component 121 for facilitating 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, and the remote UE 104b may have a second access link 120b to the base station 102a. The relay communication component 121 may be configured to support cross-carrier scheduling.

[0041] 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, it has an access link 120b to the base station 102a. The remote communication component 125 may be configured to support cross-carrier scheduling. Similarly, the base station 102a may include a base station communication component 127, which is configured to communicate with the UE and support cross-carrier scheduling.

[0042] Further details of these cross-carrier scheduling techniques performed by the relay UE 104a, the remote UE 104b, and / or the base station 102a will be discussed in greater detail below.

[0043] 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.

[0044] The base station 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with the EPC 160 via a backhaul link 132 (e.g., an S1 interface). The base station 102 configured for 5G NR (collectively referred to as the Next Generation RAN (NG-RAN)) can interface with the 5G core network 190 via a backhaul link 184. Among other functions, the base station 102 can also 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) over backhaul links 134 (eg, X2 interfaces). Backhaul links 134 may be wired or wireless.

[0045] Base station 102 can communicate wirelessly with UE 104 (including relay UE 104b and sidelink assisted multi-link UE 104a). Each base station 102 in base station 102 can provide communication coverage for a corresponding geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' may have a coverage area 110' that overlaps with the coverage area 110 of one or more macro base stations 102. A network including both small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG). The communication link 120 (including access links 120a and 120b) between base station 102 and UE 104 may include an uplink (UL) (also referred to as a reverse link) transmission from UE 104 to base station 102 and / or a downlink (DL) (also referred to as 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 be through one or more carriers. The base station 102 / UE 104 may use a spectrum of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrier aggregation of up to Yx MHz (x component carriers) for transmission in each direction. The carriers may be adjacent to each other or may not be 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).

[0046] Certain UEs 104 (such as relay UE 104b and sidelink assisted multilink UE 104a) can communicate with each other using device-to-device (D2D) communication links 158 (one example of which includes sidelink 158a). The D2D communication link 158 can use DL / UL WWAN spectrum. The D2D communication link 158 can 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 communication can be through a variety of wireless D2D communication systems, such as FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on IEEE 802.11 standards, LTE, or NR.

[0047] 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) prior to communication to determine whether the channel is available.

[0048] 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 as used by the Wi-Fi AP 150. The small cell 102' employing NR in the unlicensed spectrum may improve coverage and / or increase capacity of the access network.

[0049] The base station 102 (whether a small cell 102' or a large cell (e.g., a macro base station)) may include an eNB, a gNodeB (gNB), or another type of base station. Some base stations (such as gNB 180) may operate in the traditional sub-6 GHz spectrum, in millimeter wave (mmW) frequencies, and / or near mmW frequencies to communicate with the UE 104. When the gNB 180 operates in mmW or near mmW frequencies, the gNB 180 may be referred to as a mmW base station. Extremely high frequency (EHF) is a portion of RF in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and has a wavelength between 1 mm and 10 mm. Radio waves in this band may be referred to as millimeter waves. Near mmW may extend down to frequencies of 3 GHz, which have a wavelength of 100 mm. The super high frequency (SHF) band extends between 3 GHz and 30 GHz and is also referred to as centimeter waves. Communications using the 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 utilize beamforming 182 with the UE 104 to compensate for the extremely high path loss and short range.

[0050] 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 station 180 / UE 104. The transmit direction and receive direction for the base station 180 may be the same or may be different. The transmit direction and receive direction for the UE 104 may be the same or may be different.

[0051] 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 IP address allocation to the UE as well as 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 setup 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 services to base stations 102 belonging to a multicast broadcast single frequency network (MBSFN) area broadcasting a particular service, and may be responsible for session management (start / stop) and for collecting eMBMS-related billing information.

[0052] 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. The AMF 192 may communicate with a unified data management (UDM) 196. The AMF 192 is a control node that handles signaling between the UE 104 and the core network 190. Typically, the AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are transmitted through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to an IP service 197. The IP service 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services.

[0053] 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 station, a radio base station, a radio transceiver, a transceiver functional unit, a basic service set (BSS), an extended service set (ESS), a transmit receive point (TRP), or some other appropriate 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 unit, 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 computer, 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 similarly functional device. Some of UE 104 may be referred to as IoT devices (e.g., a parking meter, a gas pump, an oven, a vehicle, a heart monitor, etc.). UE 104 may also be referred to as a station, a mobile station, a user 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 subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handheld device, a user agent, a mobile client, a client, or some other suitable terminology.

[0054] Figures 2A-2D A diagram of example frame structures and resources for facilitating cross-carrier scheduling that may be utilized in communications between base stations 102 and UEs 104 as described in the present disclosure is included. Figure 2A 200 is a diagram illustrating an example of a first subframe within a 5G / NR frame structure. Figure 2B is a diagram 230 showing an example of DL channels within a 5G / NR subframe. Figure 2C 250 is a diagram illustrating an example of a second subframe within a 5G / NR frame structure. Figure 2D 280 is a diagram showing an example of an UL channel within a 5G / NR subframe. The 5G / NR frame structure can be FDD (wherein, for a particular set of subcarriers (carrier system bandwidth), subframes within the subcarrier set are dedicated to either DL or UL), or can be TDD (wherein, for a particular set of subcarriers (carrier system bandwidth), subframes within the subcarrier set are dedicated to both DL and UL). Figure 2A , 2CIn the example provided, the 5G / NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (most of which are DL), where D is DL, U is UL, and X is flexible between DL / UL, and subframe 3 is configured with slot format 34 (most of which are UL). Although subframes 3 and 4 are shown as having 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 full DL and full UL, respectively. Other slot formats 2-61 include a mix of DL, UL and flexible symbols. The UE is configured to have a slot format (dynamically configured by DL control information (DCI) or semi-statically / statically configured by radio resource control (RRC) signaling) through a received slot format indicator (SFI). It should be noted that the following description also applies to the 5G / NR frame structure as TDD.

[0055] Other wireless communication technologies may have different frame structures and / or different channels. A frame (10ms) may be divided into 10 subframes (1ms) of equal size. Each subframe may include one or more time slots. A subframe may also include a microslot, which may include 7, 4 or 2 symbols. Each time slot may include 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. The symbol on the DL may be a cyclic prefix (CP) OFDM (CP-OFDM) symbol. The symbol on the UL may be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbol (also known as a single carrier frequency division multiple access (SC-FDMA) symbol) (for power-limited scenarios; limited to single stream transmission). The number of time slots in a subframe may be based on the time slot configuration and numerology. For slot configuration 0, different digital schemes μ0 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. Accordingly, for slot configuration 0 and digital scheme μ, there are 14 symbols / slot and 2 μ time slots / 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. Therefore, 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 related to the subcarrier spacing. Figures 2A-2DAn example is provided for slot configuration 0 with 14 symbols per slot and a digital scheme μ = 0 with 1 slot per subframe. The subcarrier spacing is 15 kHz and the symbol duration is approximately 66.7 μs.

[0056] The resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) (also called a physical RB (PRB)), which extends 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.

[0057] like Figure 2A As shown, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulation RS (DM-RS) for channel estimation at the UE (indicated as R for a specific configuration). x , where 100x is the port number, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS). RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0058] Figure 2B Examples of various DL channels within a subframe of a frame are shown. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs), each CCE including nine RE groups (REGs), and each REG including four consecutive REs in one OFDM symbol. The primary synchronization signal (PSS) may be within symbol 2 of a specific subframe of the frame. The PSS is used by UE104 to determine the subframe / symbol timing and the physical layer identification. The secondary synchronization signal (SSS) may be within symbol 4 of a specific subframe of the frame. The SSS is used by the UE to determine the physical layer cell identification group number and the 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), which carries 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 (eg, System Information Block (SIB)) that is not transmitted through the PBCH, and paging messages.

[0059] like Figure 2CAs shown, some of the REs carry DM-RS for channel estimation at the base station (indicated as R for a specific configuration, but other DM-RS configurations are possible). 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 one or two symbols of the PUSCH. In different configurations, the PUCCH DM-RS can be sent depending on whether a short PUCCH or a long PUCCH is sent and depending 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 on the UL.

[0060] Figure 2D Examples of various UL channels within a subframe of a frame are shown. The PUCCH may be positioned 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.

[0061] Figure 3 300 is a schematic diagram of an example of a time slot structure that can be used within a 5G / NR frame structure (e.g., for sidelink communications, including cross-carrier scheduling). This is just an example, and other wireless communication technologies may have different frame structures and / or different channels. A frame (e.g., 10ms) can be divided into subframes of equal size (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 include 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.

[0062] A resource grid may be used to represent a frame structure. Each time slot may include a resource block (RB), also referred to as a physical RB (PRB), which extends over 12 consecutive subcarriers. The resource grid may be divided into a plurality of resource elements (REs). The number of bits carried by each RE may depend on the modulation scheme. Some of the REs may include control information (e.g., together with a demodulation RS (DMRS)). The control information may include sidelink control information (SCI). In some implementations, at least one symbol at the beginning of a time slot may be used by a transmitting device to perform a listen-before-talk (LBT) operation before transmitting. In some implementations, at least one symbol may be used for feedback, as described herein. In some implementations, another symbol, such as at the end of a 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 (e.g., in a subsequent time slot). As shown, data may be sent in the remaining REs. The data may include the data messages described herein. The position of any one of the SCI, feedback, and LBT symbols may be different from that in Figure 3 In some implementations, 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 the gap symbols may be different from the symbols used for a single time slot.

[0063] Figure 44 is a schematic 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 communication and / or UE 104-UE 104 communication in the system 100 supporting cross-carrier scheduling. For example, such communication may include, but is not limited to, communication 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 the access network. In a specific example, TX / RX node 410 may be an example implementation of base station 102, and wherein 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 3 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 switching 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; and MAC layer functions associated with: mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0064] 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 of the transmission channel, forward error correction (FEC) encoding / decoding of the transmission channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, 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-order 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 using an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to generate multiple spatial streams. Channel estimates from the channel estimator 474 can be used to determine the coding and modulation schemes and for spatial processing. Channel estimates can be derived from reference signals and / or channel condition feedback sent by the tx / rx node 450. Each spatial stream is then provided to a different antenna 420 via a separate transmitter 418TX. Each transmitter 418TX can modulate an RF carrier with a corresponding spatial stream for transmission.

[0065] At the TX / RX node 450, each receiver 454RX receives a signal through its corresponding antenna 452. Each receiver 454RX recovers the information modulated onto the 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, the RX processor 456 can combine them into a single OFDM symbol stream. The RX processor 456 then uses a fast Fourier transform (FFT) to convert the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier and the reference signal 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.

[0066] 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.

[0067] Similar to the functions described in conjunction with DL transmissions performed by 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, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with: mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0068] Channel estimates derived by the channel estimator 458 from a reference signal or feedback sent by the TX / RX node 410 may be used by the TX processor 468 to select the 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 corresponding spatial stream for transmission.

[0069] At the TX / RX node 410, UL transmissions are processed in a manner similar to that described in conjunction with the receiver functionality at the 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.

[0070] 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 channels 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.

[0071] In one implementation, 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 Various aspects related to components 121, 125 and / or 127.

[0072] In one implementation, 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 Various aspects related to components 121, 125 and / or 127.

[0073] refer to Figure 5 and 6 , the sidelink relay communication scenarios 500, 602, and / or 604 include relaying communications on a sidelink. As described above, the sidelink communications generally include any type of D2D communications. D2D communications may be used in applications such as, but not limited to, vehicle-to-everything (V2X) or vehicle-to-any other device type communications, sensor networks, public safety related communication services with limited infrastructure availability, or any other such type of applications.

[0074] In the sidelink relay communication scenarios 500, 602 and / or 604, the relay UE 104a can establish multi-link communication with one or more base stations 102a and / or 102b on two or more communication links, the two or more 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, such as 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 102b via a sidelink 158a with the remote UE 104b, and the remote UE 104b has a second access link 120b with the base station 102a.

[0075] 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 sidelink 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 sidelink relay communication scenarios 500, 602, and / or 604 may be used for improved diversity (e.g., sending the same data on two links (access link and sidelink)) and / or improved throughput (e.g., sending different independent data on each link). In one implementation, in a mmW system, this type of multi-link communication may be obtained using multiple transmit / receive beams and multiple antenna panels (subarrays) between UEs and / or between a corresponding UE and a corresponding base station / gNB.

[0076] 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 multi-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 communicates indirectly with the base station 102b via a sidelink 158a with a remote UE 104b, and the remote UE 104b has a second access link 120b with the base station 102b. In addition, in this case, the base stations 102a and 102b can exchange communications on the backhaul link 134a.

[0077] 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 ).

[0078] Generally, cross-carrier scheduling is a method of scheduling data transmission in a first component carrier using a scheduling control signal sent in a component carrier from a first component carrier. For example, a first UE may send a sidelink scheduling control signal PSCCH in a first CC to a receiving second UE, which schedules data transmission PSSCH in a second CC. The advantage of cross-carrier scheduling is that it allows a network node to use only one scheduling control signal for multi-carrier data transmission. As an example, a first UE may send a sidelink scheduling control signal PSCCH in a first CC, which schedules PSSCH in the first CC and the second CC.

[0079] However, in current sidelink implementations, it may not be possible to indicate a CC for scheduled data transmission that is different from the CC in which the scheduling control signal is sent. That is, in current sidelink implementations, it may be assumed that the data transmission and the corresponding scheduling control signal are in the same component carrier. In some implementations, there are two forms of sidelink control indicators that can be used to schedule sidelink data transmission.

[0080] The first SCI (e.g., SCI1) may include one or more of the following: three-bit priority, time domain resource allocation (TDRA) and / or frequency domain resource allocation (FDRA), resource reservation period, demodulation reference signal (DMRS) mode and / or corresponding number of ports, a second SCI (e.g., SCI2) format and / or beta factor, and a modulation and coding scheme (MCS).

[0081] The second SCI (e.g., SCI2) may include one or more of the following: a hybrid automatic repeat request (HARQ) process identifier (ProcessID), a new data indicator (NDI), a redundancy value (RV), a source identifier (SourceID) (which may be 8 bits), a destination identifier (DestID) (which may be 16 bits), a channel state information (CSI) request, and a zone identifier (ZoneID) and a communication range (for type 1 multicast).

[0082] In order to facilitate cross-carrier scheduling in the sidelink in the sidelink implementation, an extended form of SCI including a carrier indication field (CIF) may be introduced. The CIF may be in either the extended first SCI (e.g., SCI1) or the extended second SCI (e.g., SCI2). However, devices manufactured before the introduction of the new SCI may not understand the extended SCI. One way to ensure that such devices are still available and the introduction of the extended SCI is to prohibit the use of these devices in the new frequency band (FR 2 / 2x / 4). In this way, only devices with extended SCI are used in the new frequency band, and these devices can perform multi-carrier cross-carrier scheduling.

[0083] Another solution to the above problem that the existing UE cannot read the extended SCI may be to send both the current SCI and the extended SCI. An example of such a solution: Assume that the new SCI1 contains CIF. UE1 may wish to perform cross-carrier scheduling on UE2 so that the scheduling control signal can be in CC1 and the corresponding data transmission is in CC2. UE1 can then send the extended SCI1 in CC1 and the current SCI1 in CC2. The extended SCI1 may be readable by UE2, and the current SCI1 may be readable by any nearby UE. As another example, consider that UE1 may wish to perform multi-carrier cross-carrier scheduling on UE2 so that the multi-carrier scheduling control signal is in CC1 (using extended SCI1) and the corresponding data transmission is in CC2 and CC3. UE1 can send extended SCI1 in CC1 and two additional SCI1s in the current form in CC2 and CC3. The benefit of extended SCI1 is that UE2, as the target receiver, does not have to monitor the two traditional SCI1s in CC2 and CC3, but instead UE2 can monitor a single extended SCI1 in CC1.

[0084] The purpose of the two additional SCI1s in the current form may be to indicate to any UE portion of the first UE set that has reduced or different capabilities relative to the second UE set in the vicinity that the resources indicated by the two SCI1s in CC2 and CC3 may be reserved for the transmission of data. If CC1 and CC2 are the same in the previous example, SCI1 in the new form and SCI1 in the current form may be sent successively in CC2. For this case, it may be that some UEs may not have the ability to send two SCI1s back to back, and multi-carrier cross scheduling may not be allowed in this case.

[0085] As described in the above paragraphs, CIF may be included in the extended SCI1 so that a UE attempting to perform multi-carrier cross-carrier scheduling may send a new SCI1 and multiple SCI1s in the current form in all CCs where data transmission will occur. Another implementation may include CIF in the extended SCI2. With this implementation, a multi-carrier cross-carrier scheduling UE may still send multiple SCI1s in the current form in all component carriers where data transmission will occur, and in addition, the UE may send SCI1 in the current form in the component carrier where SCI2 in the new form is sent.

[0086] If the extended SCI1 including the multi-CC grant is to be transmitted on one of the component carriers associated with the multi-CC grant, the transmitting UE may perform TDM on the transmission of the extended SCI1 and the transmission of the SCI1 with the current format in the one of the component carriers associated with the multi-CC grant. For example, the transmitting UE may first transmit the extended SCI1 followed by the SCI1 with the current format. Such TDM of the extended SCI1 and the current SCI1 may be implemented when the PSCCH to PSSCH delay in the component carrier is greater than zero.

[0087] In another aspect, if extended SCI2 sent in the first component carrier is used to schedule PSSCH in the second component carrier, a UE that cannot decode extended SCI2 may read SCI1 with the current format associated with extended SCI2 and may mistakenly believe that the first component carrier will be used for PSSCH transmission.

[0088] In some implementations, the SCI monitoring burden may be limited by constraining multi-carrier cross-carrier scheduling to specific CCs. The allowed CCs may be configured by a network entity.

[0089] refer to Figure 7 , multiple cross-carrier scheduling scenarios 700 can be implemented to allow various UE types to read the CIF in the SCI.

[0090] Specifically, a single grant may correspond to a cross-CC grant (e.g., CC1→CC2) or a same CC grant (e.g., CC1→CC1). Cross-CC grants may provide asymmetry in CCs (e.g., HetNet, Licensed Assisted Access (LAA), network load), thereby merging grants in more reliable CCs. Even without asymmetry, grant merging in a few CCs may limit PSCCH monitoring and save power. Multi-CC grants may correspond to multiple cross-CC grants (e.g., CC1→CC2+CC3) or the same multi-CC grant (e.g., CC1vCC1+CC2).

[0091] For example, the first scenario 702 depicts a scenario in which there is no cross-carrier scheduling and both SCI (PSCCH) and data (PSSCH) are in the same component carrier. In the second scenario 704, extended SCI1 710 or SCI2 712 is used for cross-carrier scheduling and SCI1 in its current form is present in the same component carrier as the PSSCH. The current SCI1 is sent by the transmitting UE to allow any nearby UE that cannot decode the extended SCI1 710 or SCI2 712 to know the resources of the scheduled PSSCH. In the third scenario 706, the extended SCI1 710 or SCI2 712 is used to schedule two PSSCH transmissions in two different component carriers, which are different from the component carrier in which the extended SCI1 710 or SCI2 712 is sent. The two current SCI1s are sent by the transmitting UE in the component carrier in which the two PSSCH transmissions are scheduled. In a fourth scenario 708, two PSSCH transmissions are scheduled in two different component carriers, one of which is the component carrier in which the extended SCI1 710 or SCI2 712 is transmitted.

[0092] refer to Figure 8 , the example method 800 of wireless communication may be performed by, for example, a relay UE 104a, which may include, for example, Figure 1 , 4 or one or more components discussed in 10, and may be based on the above Figure 5-7 The cross-carrier scheduling technology discussed is used for operation.

[0093] At 802, method 800 includes: configuring a multi-component carrier grant for transmission to a receiver, the multi-component carrier grant including a plurality of component carriers for PSSCH. For example, in one aspect, the remote UE 104b 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 communication component 121 to configure a multi-component carrier grant for transmission to the receiver, the multi-component carrier grant including a plurality of component carriers for PSSCH. Thus, the UE 104b, the processor 1012, the communication component 121, or one of its subcomponents may define a unit for configuring a multi-component carrier grant for transmission to the receiver, the multi-component carrier grant including a plurality of component carriers for PSSCH. For example, the processor 1012 of the relay UE 104a in conjunction with the transceiver 1002 may configure a multi-component carrier grant including a plurality of component carriers for PSSCH transmission to the receiver.

[0094] At 804, the method 800 includes: sending one or both of a first set of SCIs or a second SCI, each of the first SCIs in the first set of SCIs including a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information for the one component carrier, and the second SCI including a multi-component carrier grant and associated with scheduling information for multiple component carriers. 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 relay communication component 121 to send one or both of a first set of SCIs 710 or a second set of SCIs 712, each of the first SCIs 710 including a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information for the one component carrier, and the second SCI 712 including a multi-component carrier grant and associated with scheduling information for multiple component carriers. Thus, the UE 104b, the processor 1012, the communication component 121, or one of its subcomponents may define means for transmitting one or both of a first set of SCIs or a second set of SCIs, each of which includes a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information for the one component carrier, and a second set of SCIs including a multi-component carrier grant and associated with scheduling information for multiple component carriers. For example, the processor 1012 of the relay UE 104a may activate the transceiver 1002 and the associated RF front end 1088 components to transmit one or both of a first set of SCIs or a second set of SCIs, each of which includes a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information for the one component carrier, and a second set of SCIs including a multi-component carrier grant and associated with scheduling information for multiple component carriers.

[0095] In some implementations, sending one or both of the first SCI or the second SCI may include sending both the first SCI set and the second SCI such that each component carrier in the multiple component carriers has a first payload associated with a single component carrier grant, and the second SCI has a second payload that is different from the first payload and is associated with a multiple component carrier grant.

[0096] In some implementations, the first SCI may indicate to the first set of UEs a reservation of resources indicated by a single component carrier grant.

[0097] In some implementations, sending one or both of the first SCI or the second SCI may include sending the first SCI in each component carrier of a multi-component carrier grant and sending the second SCI in a component carrier in the multi-component carrier grant that is different from the component carrier.

[0098] In some implementations, each of the first SCIs may indicate a reservation by the first set of UEs for resources indicated in a single component carrier grant, the single component carrier grant corresponding to the first component carrier.

[0099] In some implementations, sending one or both of the first SCI or the second SCI may include: sending the first SCI associated with the first set of UEs in each component carrier of a multi-component carrier authorization; sending the second SCI associated with the second set of UEs in one component carrier of the multi-component carrier authorization, and the multi-component carrier authorization includes the first component carrier and the second component carrier.

[0100] In some implementations, the second SCI may include scheduling information up to the number of component carriers, or wherein the second SCI may include a designated component carrier from the number of component carriers for scheduling all transmissions in the number of component carriers.

[0101] In some implementations, the first SCI may be associated with a first SCI format and the second SCI may be associated with a second SCI format different from the first SCI format.

[0102] In some implementations, the second SCI may correspond to one of SCI1 or SCI2.

[0103] refer to Fig. 9 , the example method 900 of wireless communication may be performed by, for example, a remote UE 104b, which may include, for example, Figure 1 , 4 or one or more components discussed in 10, and may be based on the above Figure 5-7 The cross-carrier scheduling technology discussed is used for operation.

[0104] At 802, method 800 includes sending UE capability information indicating cross-carrier scheduling capability. For example, in one aspect, the remote UE 104b can 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 remote communication component 125 to send UE capability information indicating cross-carrier scheduling capability. Therefore, the UE 104b, the processor 1012, the communication component 121, or one of its subcomponents can define a unit for sending UE capability information indicating cross-carrier scheduling capability. For example, the processor 1012 of the remote UE 104b can activate the transceiver 1002 and the associated RF front end 1088 components to send UE capability information indicating cross-carrier scheduling capability.

[0105] At 904, the method 900 includes receiving one or both of a first set of SCIs or a second SCI, each of the first SCIs in the first set of SCIs including a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information for the one component carrier, and the second SCI including a multi-component carrier grant and associated with scheduling information for multiple component carriers. For example, in one aspect, the remote UE 104b 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 remote communication component 125 to receive one or both of the first set of SCIs or a second SCI, each of the first SCIs including a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information for the one component carrier, and the second SCI including a multi-component carrier grant and associated with scheduling information for multiple component carriers. Thus, the UE 104b, the processor 1012, the communication component 121, or one of its subcomponents may define means for receiving one or both of a first set of SCIs or a second set of SCIs, each of which includes a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information for the one component carrier, and a second SCI that includes a multi-component carrier grant and is associated with scheduling information for multiple component carriers. For example, the processor 1012 of the remote UE 104b may activate the transceiver 1002 and the associated RF front end 1088 components to receive one or both of a first set of SCIs or a second set of SCIs, each of which includes a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information for the one component carrier, and a second SCI that includes a multi-component carrier grant and is associated with scheduling information for multiple component carriers.

[0106] In some implementations, receiving one or both of the first SCI or the second SCI may include: receiving both the first SCI set and the second SCI, such that each component carrier in the multiple component carriers has a first payload associated with a single component carrier grant, and the second SCI has a second payload different from the first payload and associated with the multiple component carrier grant.

[0107] In some implementations, the first SCI may indicate to the first set of UEs a reservation of resources indicated by a single component carrier grant.

[0108] In some implementations, receiving one or both of the first SCI or the second SCI may include: receiving the first SCI in each component carrier of a multi-component carrier grant; receiving the second SCI in a component carrier different from the component carrier in the multi-component carrier grant.

[0109] In some implementations, each of the first SCIs may indicate a reservation by the first set of UEs for resources indicated in a single component carrier grant, the single component carrier grant corresponding to the first component carrier.

[0110] In some implementations, receiving one or both of the first SCI or the second SCI may include: receiving the first SCI associated with the first set of UEs in each component carrier of a multi-component carrier grant; receiving the second SCI associated with the second set of UEs in one component carrier of the multi-component carrier grant, the multi-component carrier grant including the first component carrier and the second component carrier.

[0111] In some implementations, the first SCI may be associated with a first SCI format and the second SCI associated with a second SCI format different from the first SCI format.

[0112] In some implementations, the second SCI may correspond to one of SCI1 or SCI2.

[0113] 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 and a transceiver 1002 that communicate via one or more buses 1044, 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 facilitate cross-carrier scheduling.

[0114] In one aspect, the one or more processors 1012 may include a modem 1040 using one or more modem processors and / or may be part of the modem 1040. 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 in one aspect, may be performed by a single processor, while in other aspects, different functions of these 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 the following: a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiver processor, or a transceiver processor associated with the transceiver 1002. In other aspects, some of the 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.

[0115] In addition, the memory 1016 may be configured to store data used herein and / or a local version of the application 1175 executed by at least one processor 1012 or one or more subcomponents of the communication component 1042 and / or its subcomponents. 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 storing one or more computer executable codes, wherein when the UE 104 operates one or more processors 1012 to execute the relay multi-CC communication component 121 and / or the remote communication component 125 and / or one or more subcomponents thereof, the one or more computer executable codes are used to define the relay multi-CC communication component 121 and / or the remote communication component 125 and / or one or more subcomponents thereof and / or data associated therewith.

[0116] The transceiver 1002 may include at least one receiver 1006 and at least one transmitter 1008. The receiver 1006 may include hardware for receiving data and / or software executable by a processor, 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 signals transmitted by at least one base station 102. In addition, the receiver 1006 may process these received signals and may also obtain measurements of the signals, 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 for sending data and / or software executable by a processor, 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.

[0117] In addition, in one aspect, the UE 104 may include an RF front end 1088 that can operate to communicate with one or more antennas 1065 and the transceiver 1002 for receiving and sending radio transmissions, such as wireless communications sent by at least one base station 102 or sent by the UE 104. The one or more antennas 1065 may include one or more antenna panels and / or sub-arrays, such as may be used for beamforming. 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.

[0118] In one aspect, the LNA 1090 can amplify the received signal at a desired output level. In one aspect, each LNA 1090 can have a specified minimum gain value and a maximum gain value. 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.

[0119] In addition, for example, the RF front end 1088 can use one or more PAs 1098 to amplify the signal for RF output at a desired output power level. In one aspect, each PA 1098 can have a specified minimum gain value and a 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.

[0120] 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, the output from the corresponding PA 1098 can be filtered using a corresponding filter 1096 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 path or a receive path using a specified filter 1096, LNA 1090, and / or PA 1098 based on the configuration specified by the transceiver 1002 and / or the processor 1012.

[0121] Thus, the transceiver 1002 may 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 may be tuned to operate at a specified frequency so that the UE 104 may 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, the modem 1040 may configure the transceiver 1002 to operate at a specified frequency and power level based on, for example, the UE configuration of the UE 104 and the communication protocol used by the modem 1040.

[0122] 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 can be configured to support multiple frequency bands for 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 based on the specified modem configuration to enable the transmission and / or reception of signals from the network. In one aspect, the modem configuration can be based on the mode of the modem and the frequency band in use. In another aspect, the modem configuration can be based on UE configuration information associated with the UE 104 (such as provided by the network during cell selection and / or cell reselection).

[0123] In one aspect, processor 1012 may correspond to Figure 4 Similarly, the memory 1016 may correspond to one or more processors in conjunction with the UE described in the embodiment of the present invention. Figure 4 The memory described by the UE in .

[0124] 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, in addition to including 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 facilitate cross-carrier scheduling.

[0125] The transceiver 1102, receiver 1106, transmitter 1108, one or more processors 1112, memory 1116, application 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 as described above, but may be configured or otherwise programmed for base station operations as opposed to UE operations.

[0126] In one aspect, processor 1112 may correspond to Figure 4 Similarly, the memory 1116 may correspond to one or more processors in combination with the base station described in the embodiment of the present invention. Figure 4 The memory described by the base station in.

[0127] Some additional examples

[0128] Aspects described herein additionally include one or more of the following aspect examples described in the following numbered clauses.

[0129] 1. A method for wireless communication at a transmitter, comprising:

[0130] configuring a multi-component carrier grant for transmission to a receiver, the multi-component carrier grant comprising a plurality of component carriers for a physical sidelink shared channel (PSSCH); and

[0131] Send one or both of a first sidelink control information (SCI) set or a second SCI, wherein each first SCI in the first SCI set includes a single component carrier grant corresponding to one component carrier from the multiple component carrier grant and associated with scheduling information of the one component carrier, and the second SCI includes the multiple component carrier grant and is associated with scheduling information of the multiple component carriers.

[0132] 2. A method as described in clause 1, wherein sending one or both of the first SCI or the second SCI includes: sending both the first SCI set and the second SCI so that each component carrier in the multiple component carriers has a first payload associated with the single component carrier grant, and the second SCI has a second payload different from the first payload and associated with the multiple component carrier grant.

[0133] 3. A method as described in any preceding clause, wherein the first SCI indicates to a first set of user equipments (UEs) a reservation of resources indicated by the single component carrier grant.

[0134] 4. A method as described in any preceding clause, wherein sending one or both of the first SCI or the second SCI comprises:

[0135] sending the first SCI in each component carrier of the multi-component carrier grant; and

[0136] The second SCI is sent in a component carrier different from the component carrier in the multi-component carrier grant.

[0137] 5. A method according to any preceding clause, wherein each of the first SCIs indicates to the first set of user equipments (UEs) a reservation of resources indicated in the single component carrier grant, the single component carrier grant corresponding to the first component carrier.

[0138] 6. A method as described in any preceding clause, wherein sending one or both of the first SCI or the second SCI comprises:

[0139] transmitting the first SCI associated with a first set of user equipments (UEs) in each component carrier of the multi-component carrier grant; and

[0140] The second SCI associated with the second set of UEs is sent in one component carrier of the multi-component carrier grant, the multi-component carrier grant including a first component carrier and a second component carrier.

[0141] 7. A method as described in any preceding clause, wherein the second SCI includes scheduling information for up to the number of component carriers, or wherein the second SCI includes a designated component carrier from the number of component carriers for scheduling all transmissions in the number of component carriers.

[0142] 8. A method according to any preceding clause, wherein the first SCI is associated with a first SCI format and the second SCI is associated with a second SCI format different from the first SCI format.

[0143] 9. A method according to any preceding clause, wherein the second SCI corresponds to one of SCI1 or SCI2.

[0144] 10. A method for wireless communication at a receiver, comprising:

[0145] sending UE capability information indicating cross-carrier scheduling capability; and

[0146] Receive one or both of a first sidelink control information (SCI) set or a second SCI, wherein each first SCI in the first SCI set includes a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information of the one component carrier, and the second SCI includes the multi-component carrier grant and is associated with scheduling information of multiple component carriers.

[0147] 11. A method according to any preceding clause, wherein receiving one or both of the first SCI or the second SCI comprises: receiving both the first SCI set and the second SCI so that each component carrier in the multiple component carriers has a first payload associated with the single component carrier grant, and the second SCI has a second payload different from the first payload and associated with the multiple component carrier grant.

[0148] 12. A method as described in any preceding clause, wherein the first SCI indicates to a first set of UEs a reservation of resources indicated by the single component carrier grant.

[0149] 13. A method as described in any preceding clause, wherein receiving one or both of the first SCI or the second SCI comprises:

[0150] receiving the first SCI in each component carrier of the multi-component carrier grant; and

[0151] The second SCI is received in a component carrier different from the component carrier in the multi-component carrier grant.

[0152] 14. A method as described in any preceding clause, wherein each of the first SCIs indicates to a first set of UEs a reservation of resources indicated in the single component carrier grant corresponding to the first component carrier.

[0153] 15. A method as described in any preceding clause, wherein receiving one or both of the first SCI or the second SCI comprises:

[0154] receiving, in each component carrier of the multi-component carrier grant, the first SCI associated with a first set of UEs; and

[0155] The second SCI associated with a second set of UEs is received in one component carrier of the multi-component carrier grant, the multi-component carrier grant including a first component carrier and a second component carrier.

[0156] 16. A method according to any preceding clause, wherein the first SCI is associated with a first SCI format and the second SCI is associated with a second SCI format different from the first SCI format.

[0157] 17. A method according to any preceding clause, wherein the second SCI corresponds to one of SCI1 or SCI2.

[0158] 18. An apparatus for wireless communication, comprising:

[0159] Transceiver;

[0160] a memory configured to store instructions; and

[0161] at least one processor communicatively coupled to the transceiver and the memory, wherein the at least one processor is configured to:

[0162] configuring a multi-component carrier grant for transmission to a receiver, the multi-component carrier grant comprising a plurality of component carriers for a physical sidelink shared channel (PSSCH); and

[0163] Send one or both of a first sidelink control information (SCI) set or a second SCI, wherein each first SCI in the first SCI set includes a single component carrier grant corresponding to one component carrier from the multiple component carrier grant and associated with scheduling information of the one component carrier, and the second SCI includes the multiple component carrier grant and is associated with scheduling information of the multiple component carriers.

[0164] 19. An apparatus according to any preceding clause, wherein, in order to send one or both of the first SCI or the second SCI, the at least one processor is further configured to: send both the first SCI set and the second SCI so that each component carrier in the multiple component carriers has a first payload associated with the single component carrier grant, and the second SCI has a second payload different from the first payload and associated with the multiple component carrier grant.

[0165] 20. An apparatus as described in any preceding clause, wherein the first SCI indicates to a first set of user equipments (UEs) a reservation of resources indicated by the single component carrier grant.

[0166] 21. An apparatus according to any preceding clause, wherein, to send one or both of the first SCI or the second SCI, the at least one processor is further configured to:

[0167] sending the first SCI in each component carrier of the multi-component carrier grant; and

[0168] The second SCI is sent in a component carrier different from the component carrier in the multi-component carrier grant.

[0169] 22. An apparatus according to any preceding clause, wherein each of the first SCIs indicates to the first set of user equipments (UEs) a reservation of resources indicated in the single component carrier grant, the single component carrier grant corresponding to the first component carrier.

[0170] 23. An apparatus according to any preceding clause, wherein, to send one or both of the first SCI or the second SCI, the at least one processor is further configured to:

[0171] transmitting the first SCI associated with a first set of user equipments (UEs) in each component carrier of the multi-component carrier grant; and

[0172] The second SCI associated with the second set of UEs is sent in one component carrier of the multi-component carrier grant, the multi-component carrier grant including a first component carrier and a second component carrier.

[0173] 24. An apparatus as described in any preceding clause, wherein the second SCI includes scheduling information for up to a number of component carriers, or wherein the second SCI includes a designated component carrier from the number of component carriers for scheduling all transmissions in the number of component carriers.

[0174] 25. An apparatus according to any preceding clause, wherein the first SCI is associated with a first SCI format and the second SCI is associated with a second SCI format different from the first SCI format.

[0175] 26. An apparatus for wireless communication, comprising:

[0176] Transceiver;

[0177] a memory configured to store instructions; and

[0178] at least one processor communicatively coupled to the transceiver and the memory, wherein the at least one processor is configured to:

[0179] sending UE capability information indicating cross-carrier scheduling capability; and

[0180] Receive one or both of a first sidelink control information (SCI) set or a second SCI, wherein each first SCI in the first SCI set includes a single component carrier grant corresponding to one component carrier from a multi-component carrier grant and associated with scheduling information of the one component carrier, and the second SCI includes the multi-component carrier grant and is associated with scheduling information of multiple component carriers.

[0181] 27. An apparatus according to any preceding clause, wherein, in order to receive one or both of the first SCI or the second SCI, the at least one processor is further configured to: receive both the first SCI set and the second SCI, so that each component carrier in the multiple component carriers has a first payload associated with the single component carrier grant, and the second SCI has a second payload different from the first payload and associated with the multiple component carrier grant.

[0182] 28. An apparatus as described in any preceding clause, wherein the first SCI indicates to a first set of UEs a reservation of resources indicated by the single component carrier grant.

[0183] 29. An apparatus according to any preceding clause, wherein, to receive one or both of the first SCI or the second SCI, the at least one processor is further configured to:

[0184] receiving the first SCI in each component carrier of the multi-component carrier grant; and

[0185] The second SCI is received in a component carrier different from the component carrier in the multi-component carrier grant.

[0186] 30. An apparatus as described in any preceding clause, wherein each of the first SCIs indicates to a first set of UEs a reservation of resources indicated in the single component carrier grant, the single component carrier grant corresponding to the first component carrier.

[0187] It is to be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is an illustration of an exemplary method. It is to be understood that the specific order or hierarchy of the blocks in the process / flowchart may be rearranged based on design preferences. In addition, some blocks may be combined or omitted. The attached method claims provide the elements of the various blocks in an example order and are not intended to be limited to the specific order or hierarchy provided.

[0188] Provide the previous description so that any person skilled in the art can practice the various aspects described herein.For those skilled in the art, various modifications to these aspects will be apparent, and the general principles defined herein can be applied to other aspects.Therefore, the claims are not intended to be limited to the aspects shown herein, but to be given the full scope consistent with the textual claims, wherein, unless explicitly stated so, otherwise the reference to an element in the singular form is not intended to mean "one and only one", but to mean "one or more".The word "exemplary" is used herein to mean "used as an example, instance or illustration".Any aspect described as "exemplary" in this article may not be interpreted as preferred or advantageous over other aspects.Unless otherwise explicitly stated, the term "some" refers to one or more.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" and "A, B, C or any combination thereof" include any combination of A, B and / or C, and may include multiples of A, multiples of B or multiples of C. Specifically, 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," and "A, B, C, or any combination thereof" may be only A, only B, only C, 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 or some members of A, B, or C. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will later be known to a person of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. The words "module," "mechanism," "element," "device," and the like may not be substitutes for the word "unit." As such, no claim element is to be interpreted as a functional module unless the element is explicitly stated using the phrase "unit for..."

Claims

1. A method for wireless communication at a transmitting device, comprising: configuring a multi-component carrier grant for transmission to a receiver, the multi-component carrier grant comprising a plurality of component carriers for a physical sidelink shared channel (PSSCH); as well as A first sidelink control information (SCI) set and a second SCI are transmitted, each first SCI in the first SCI set comprising a single component carrier grant indicating resource scheduling information for a corresponding component carrier from the multiple component carrier grants, such that each first SCI in the first SCI set is associated with a PSSCH in the corresponding component carrier, and the second SCI comprises the multiple component carrier grant indicating the resource scheduling information for the multiple component carriers and is associated with the PSSCH in all component carriers in the multiple component carriers.

2. The method according to claim 1, wherein: Sending one or both of the first SCI or the second SCI includes: sending both the first SCI set and the second SCI, so that each first SCI in the first SCI has a first payload associated with the single component carrier grant, and the second SCI has a second payload different from the first payload and associated with the multiple component carrier grant.

3. The method according to claim 2, wherein: The first SCI indicates to a first set of user equipments (UEs) a reservation of resources indicated by the single component carrier grant.

4. The method according to claim 1, wherein: Sending one or both of the first SCI or the second SCI includes: sending the first SCI in each component carrier of the multi-component carrier grant; and The second SCI is sent in a component carrier different from the component carrier in the multi-component carrier grant.

5. The method according to claim 4, wherein: Each of the first SCIs indicates to a first set of user equipments (UEs) a reservation of resources indicated in the single component carrier grant, the single component carrier grant corresponding to a first component carrier.

6. The method according to claim 1, wherein: Sending one or both of the first SCI or the second SCI includes: transmitting the first SCI associated with a first set of user equipments (UEs) in each component carrier of the multi-component carrier grant; and The second SCI associated with the second set of UEs is sent in one component carrier of the multi-component carrier grant, the multi-component carrier grant including a first component carrier and a second component carrier.

7. The method according to claim 1, wherein: The second SCI includes the resource scheduling information up to the number of component carriers, or wherein the second SCI includes a designated component carrier from the number of component carriers for scheduling all transmissions in the number of component carriers.

8. The method according to claim 1, wherein: The first SCI is associated with a first SCI format, and the second SCI is associated with a second SCI format different from the first SCI format.

9. The method according to claim 8, wherein: The second SCI corresponds to one of SCI1 or SCI2.

10. A method for wireless communication at a receiving device, comprising: sending UE capability information indicating cross-carrier scheduling capability; as well as A first sidelink control information (SCI) set and a second SCI are received, each first SCI in the first SCI set including a single component carrier grant indicating resource scheduling information for a corresponding component carrier from a multi-component carrier grant, such that each first SCI in the first SCI set is associated with a PSSCH in the corresponding component carrier, and the second SCI includes the multi-component carrier grant indicating the resource scheduling information for multiple component carriers and is associated with PSSCH in all component carriers of the multiple component carriers.

11. The method according to claim 10, wherein: Receiving one or both of the first SCI or the second SCI includes: receiving both the first SCI set and the second SCI so that each component carrier in the multiple component carriers has a first payload associated with the single component carrier grant, and the second SCI has a second payload different from the first payload and associated with the multiple component carrier grant.

12. The method according to claim 11, wherein: The first SCI indicates, to a first set of UEs, a reservation of resources indicated by the single component carrier grant.

13. The method according to claim 10, wherein: Receiving one or both of the first SCI or the second SCI includes: receiving the first SCI in each component carrier of the multi-component carrier grant; and The second SCI is received in a component carrier different from the component carrier in the multi-component carrier grant.

14. The method according to claim 13, wherein: Each first SCI of the first SCIs indicates, to a first set of UEs, a reservation of resources indicated in the single component carrier grant, the single component carrier grant corresponding to a first component carrier.

15. The method according to claim 10, wherein: Receiving one or both of the first SCI or the second SCI includes: receiving, in each component carrier of the multi-component carrier grant, the first SCI associated with a first set of UEs; and The second SCI associated with a second set of UEs is received in one component carrier of the multi-component carrier grant, the multi-component carrier grant including a first component carrier and a second component carrier.

16. The method according to claim 10, wherein: The first SCI is associated with a first SCI format, and the second SCI is associated with a second SCI format different from the first SCI format.

17. The method according to claim 16, wherein: The second SCI corresponds to one of SCI1 or SCI2.

18. An apparatus for wireless communication, comprising: 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 execute the stored instructions to: configuring a multi-component carrier grant for transmission to a receiver, the multi-component carrier grant comprising a plurality of component carriers for a physical sidelink shared channel (PSSCH); and A first sidelink control information (SCI) set and a second SCI are transmitted, each first SCI in the first SCI set comprising a single component carrier grant indicating resource scheduling information for a corresponding component carrier from the multiple component carrier grants, such that each first SCI in the first SCI set is associated with a PSSCH in the corresponding component carrier, and the second SCI comprises the multiple component carrier grant indicating the resource scheduling information for the multiple component carriers and is associated with the PSSCH in all component carriers in the multiple component carriers.

19. The device according to claim 18, wherein: To send one or both of the first SCI or the second SCI, the at least one processor is further configured to send both the first SCI set and the second SCI so that each component carrier in the multiple component carriers has a first payload associated with the single component carrier grant, and the second SCI has a second payload different from the first payload and associated with the multiple component carrier grant.

20. The device according to claim 19, wherein The first SCI indicates to a first set of user equipments (UEs) a reservation of resources indicated by the single component carrier grant.

21. The device according to claim 18, wherein To send one or both of the first SCI or the second SCI, the at least one processor is further configured to: sending the first SCI in each component carrier of the multi-component carrier grant; as well as The second SCI is sent in a component carrier different from the component carrier in the multi-component carrier grant.

22. The device according to claim 21, wherein Each of the first SCIs indicates to a first set of user equipments (UEs) a reservation of resources indicated in the single component carrier grant, the single component carrier grant corresponding to a first component carrier.

23. The device according to claim 18, wherein To send one or both of the first SCI or the second SCI, the at least one processor is further configured to: transmitting the first SCI associated with a first set of user equipments (UEs) in each component carrier of the multi-component carrier grant; as well as The second SCI associated with the second set of UEs is sent in one component carrier of the multi-component carrier grant, the multi-component carrier grant including a first component carrier and a second component carrier.

24. The device according to claim 18, wherein: The second SCI includes the resource scheduling information up to the number of component carriers, or wherein the second SCI includes a designated component carrier from the number of component carriers for scheduling all transmissions in the number of component carriers.

25. The apparatus of claim 18, wherein: The first SCI is associated with a first SCI format, and the second SCI is associated with a second SCI format different from the first SCI format.

26. An apparatus for wireless communication, comprising: 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 execute the stored instructions to: sending UE capability information indicating cross-carrier scheduling capability; as well as A first sidelink control information (SCI) set and a second SCI are received, each first SCI in the first SCI set including a single component carrier grant indicating resource scheduling information for a corresponding component carrier from a multi-component carrier grant, such that each first SCI in the first SCI set is associated with a PSSCH in the corresponding component carrier, and the second SCI includes the multi-component carrier grant indicating the resource scheduling information for multiple component carriers and is associated with PSSCH in all component carriers of the multiple component carriers.

27. The device according to claim 26, wherein: In order to receive one or both of the first SCI or the second SCI, the at least one processor is further configured to: receive both the first SCI set and the second SCI, so that each component carrier in the multiple component carriers has a first payload associated with the single component carrier grant, and the second SCI has a second payload different from the first payload and associated with the multiple component carrier grant.

28. The device according to claim 27, wherein The first SCI indicates, to a first set of UEs, a reservation of resources indicated by the single component carrier grant.

29. The device according to claim 26, wherein: To receive one or both of the first SCI or the second SCI, the at least one processor is further configured to: receiving the first SCI in each component carrier of the multi-component carrier grant; as well as The second SCI is received in a component carrier different from the component carrier in the multi-component carrier grant.

30. The device according to claim 29, wherein: Each first SCI of the first SCIs indicates, to a first set of UEs, a reservation of resources indicated in the single component carrier grant, the single component carrier grant corresponding to a first component carrier.

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