Method for processing multi-cell scheduling and user equipment

Abstract

To provide a method for handling a multi-cell scheduling and user equipment.SOLUTION: In this method, downlink control information (DCI) from a first serving cell is received. A first number of multiple scheduled cells according to the DCI is determined. The DCI is configured to schedule at least one communication on the scheduled cells. The communication is performed on at least one of the first number of the scheduled cells according to the DCI. The DCI includes at least one single DCI field, at least one separate DCI field, and at least one configurable DCI field.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention generally relates to a method and user equipment (UE) for handling multi-cell scheduling. [Background technology]

[0002] A user equipment (UE) can be served by multiple cells. For example, FIG. 1 is a schematic diagram illustrating an example of multi-cell communication. Referring to FIG. 1, a transmission reception point (TRP) #1 provides four cells Cell#0 to Cell#3, and a TRP#2 provides two cells Cell#0 to Cell#1. Furthermore, one or some of the cells Cell#0 to Cell#3 can support multi-panel operation, and the others can support single-panel operation. However, the existing DCI does not provide an appropriate field in the control signaling to indicate multi-panel operation for multi-cell scheduling. Summary of the Invention [Problem to be solved by the invention]

[0003] Therefore, the present invention relates to a method for handling multi-cell scheduling and a UE. [Means for solving the problem]

[0004] According to one or more exemplary embodiments of the present invention, a method for processing multi-cell scheduling is used by a UE, the method including: receiving downlink control information (DCI) from a first serving cell; determining a first number of scheduled cells based on the DCI, the DCI configured to schedule at least one communication on the scheduled cells; and performing at least one communication to at least one of the first number of scheduled cells based on the DCI, the DCI including at least one single DCI field, at least one individual DCI field, and at least one configurable DCI field.

[0005] According to one or more exemplary embodiments of the present invention, a UE includes a transceiver, a memory, and a processor. The transceiver is used to transmit or receive signals. The memory is used to store program code. The processor is coupled to the transceiver and the memory. The processor is configured to execute a program to receive a DCI from a first serving cell via the transceiver, determine a first number of scheduled cells based on the DCI, the DCI configured to schedule at least one communication on the scheduled cells, and perform at least one communication to at least one of the first number of scheduled cells based on the DCI. The DCI includes at least one single DCI field, at least one individual DCI field, and at least one configurable DCI field.

[0006] According to one or more exemplary embodiments of the present invention, a method for processing multi-cell scheduling is used by a network device, the method includes configuring a DCI to schedule a first number of scheduled cells, and transmitting the DCI to a UE via a first serving cell to perform multiple multi-cell communications on the scheduled cells, the DCI including at least one single DCI field, at least one individual DCI field, and at least one configurable DCI field.

[0007] In order to make the above content easier to understand, several embodiments will be described in detail below in conjunction with the drawings. [Brief description of the drawings]

[0008] The accompanying drawings are included to provide a further understanding of the principles of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0009] [Figure 1] FIG. 1 is a schematic diagram illustrating an example of multi-cell communication. [Diagram 2] FIG. 1 is a schematic diagram showing DCI size alignment. [Diagram 3] FIG. 1 is a schematic diagram showing DCI size alignment at each step. [Figure 4] 1 is a schematic diagram illustrating a wireless communication network architecture according to one exemplary embodiment of the present invention; [Diagram 5] FIG. 2 is a schematic diagram illustrating DCI size alignment at each step according to an exemplary embodiment of the present invention. [Figure 6] FIG. 2 is a schematic diagram illustrating DCI size alignment at each step according to an exemplary embodiment of the present invention. [Figure 7] 1 is a flowchart illustrating a method for processing multi-cell scheduling according to an exemplary embodiment of the present invention. [Figure 8] FIG. 2 is a schematic diagram illustrating DCI fields of four cells according to an exemplary embodiment of the present invention. [Figure 9] FIG. 2 is a schematic diagram illustrating DCI fields of three cells according to an exemplary embodiment of the present invention. [Figure 10] FIG. 2 is a schematic diagram illustrating DCI fields of three cells according to an exemplary embodiment of the present invention. [Figure 11] FIG. 2 is a schematic diagram illustrating a DCI field with a joint indication according to one exemplary embodiment of the present invention; [Figure 12] FIG. 2 is a schematic diagram illustrating mismatched DCI lengths according to one exemplary embodiment of the present invention; [Figure 13A] FIG. 2 is a schematic diagram illustrating single panel operation according to an exemplary embodiment of the present invention. [Figure 13B] FIG. 2 is a schematic diagram illustrating multi-panel operation according to an exemplary embodiment of the present invention. [Figure 14] FIG. 2 is a schematic diagram illustrating relationship determination according to an exemplary embodiment of the present invention. [Figure 15] FIG. 2 is a schematic diagram illustrating a relationship determination of one Sounding Reference Signal (SRS) resource set configured for a serving cell according to one exemplary embodiment of the present invention. [Figure 16] FIG. 2 is a schematic diagram illustrating a relationship determination of one Sounding Reference Signal (SRS) resource set configured for a serving cell according to one exemplary embodiment of the present invention. [Figure 17] FIG. 1 is a schematic diagram illustrating relationship determination for multi-panel operation according to an exemplary embodiment of the present invention. [Figure 18] FIG. 2 is a schematic diagram illustrating panel selection according to an exemplary embodiment of the present invention. [Figure 19] FIG. 1 is a schematic diagram illustrating relationship determination for multi-panel operation according to an exemplary embodiment of the present invention. [Figure 20] FIG. 2 is a schematic diagram illustrating dynamic single / multi-panel operation according to an exemplary embodiment of the present invention. [Figure 21]FIG. 2 is a schematic diagram illustrating an association of demodulation reference signal (DMRS) ports and code division multiplexing (CDM) groups according to one exemplary embodiment of the present invention. [Figure 22] FIG. 2 is a schematic diagram illustrating an association of demodulation reference signal (DMRS) ports and code division multiplexing (CDM) groups according to one exemplary embodiment of the present invention. [Diagram 23] 1 is a flowchart illustrating a method for processing multi-cell scheduling according to an exemplary embodiment of the present invention. [Figure 24] 1 is a block diagram illustrating a communication device according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which the same reference numerals are used to refer to the same or similar elements throughout the various drawings.

[0011] The abbreviations used herein are defined as follows: Unless otherwise specified, the acronyms have the following meanings: Abbreviation Full name BWP Bandwidth part CB Codebook CC Component carrier CDM Code division multiplexing CG Configure grant CI Cancellation indicator / indication CIF Carrier indicator field CORESET Control resource set CRC Cyclic redundancy check CSI Channel status information CW Codeword C-RNTI Cell-radio network temporary identity DAI Downlink Assignment Index DCI Downlink control information DL Downlink DMRS Demodulation reference signal FDRA Frequency domain resource assignment gNB Next generation node B HARQ-ACK Hybrid automatic repeat request acknowledgement IDIdentity INT Interruption MAC Media access control MCS Modulation coding scheme NACK Negative acknowledgement NDI New data indicator NR New radio OFDM Orthogonal frequency division multiplexing Pcell Primary cell PDCCH Physical downlink control channel PDSCH Physical downlink shared channel PHY Physical PL-RS pathloss reference signal PRB Physical Resource Block PTRS Phase-tracking reference signal PUCCH Physical uplink control channel PUSCH Physical uplink shared channel QAM Quadrature amplitude modulation QCL quasi-co-location RA Resource allocation RE Resource element RNTI Radio network temporary identity RRC Radio resource control RS Reference signal RV Redundancy version SCell Secondary cell SCS Sub-carrier spacing SFI Slot format indicator SLIV Start and length indicator value SP Semi persistent SPS Semi persistent scheduling SRI SRS resource indicator SRS Sounding reference signal SS Search space SSB Synchronization signal block TB Transport block TCI Transmission configuration indication TDRA Time domain resource assignment TPC Transmission power control TPMI Precoding information and number of layers TRP Transmission reception point UCI Uplink control information UE User equipment UL Uplink UL-SCH Uplink shared channel URLLC Ultra-reliable low latency communications USS UE-specific search space

[0012] First, some embodiments will be introduced.

[0013] The DCI of the present invention is also known as the DCI format.

[0014] The DCI or DCI format of the present invention is also known as PDCCH.

[0015] The DCI for multi-cell scheduling may be monitored within the USS set.

[0016] The DCI for multi-cell scheduling may be in a DCI format with CRC scrambled by the C-RNTI.

[0017] The PUSCH may be transmitted within the UL BWP of the serving cell.

[0018] A BWP (e.g., UL and / or DL) is a set of contiguous PRBs on a given carrier. A UE can be configured with up to four BWPs for the downlink and uplink, but only one BWP for the downlink and one BWP for the uplink is active at any given time. Each BWP defined for a numerology can have a different subcarrier spacing, symbol duration, and / or cyclic prefix (CP) length.

[0019] The serving cell of the present invention is also known as a cell, a carrier, or a component carrier.

[0020] The maximum number of co-scheduled cells by DCI is four.

[0021] In the present invention, multiple PUSCHs are scheduled in multiple serving cells (eg, one PUSCH per cell) by DCI.

[0022] For a UE, depending on its capabilities, the maximum number of co-scheduled cells according to the DCI format may be less than or equal to the maximum number of co-scheduled cells supported by the network or gNB.

[0023] For multi-cell scheduling, the scheduling cell and the scheduled cell may be configured in a cell group, which may be, for example, a PUCCH group.

[0024] For multi-cell scheduling, the co-scheduled cells may be configured with the same SCS configuration.

[0025] For multi-cell scheduling, the scheduling cell and the co-scheduled cells may be configured with the same SCS configuration.

[0026] In the present invention, the Type 1 field may be a common field or a first field, the Type 2 field may be a separate field or a second field, and the Type 3 field may be a configurable field or a third field, but the present invention is not limited thereto.

[0027] Combinations of the embodiments disclosed herein are not to be excluded.

[0028] In the present invention, at least one PUSCH on a serving cell is scheduled by a DCI, and it does not exclude that the DCI can schedule a PUSCH on one cell (ie, single-cell scheduling DCI).

[0029] In the present invention, to support multi-cell scheduling from a group of candidate serving cells, one or more problems are addressed: A new DCI format with a new type of DCI field (Type 3). The length, order of the DCI fields, structure of the Type 3 field, and some parameters need to be defined. There is a need to support multi-panel operation with multi-cell scheduling.

[0030] In one embodiment, a new DCI format is introduced. For multi-cell scheduling: DCI format 0_X is used to schedule multiple PUSCHs on multiple cells with one PUSCH per cell; DCI format 1_X is used to schedule multiple PDSCHs on multiple cells with one PDSCH per cell.

[0031] In one embodiment, DCI format 0_X allows different TBs to be scheduled on different cells. In one embodiment, DCI format 1_X allows different TBs to be scheduled on different cells.

[0032] In one embodiment, DCI for multi-cell scheduling is monitored only within the USS set.

[0033] In one embodiment, the co-scheduled cells and the scheduling cells according to DCI format 0_X / 1_X are both included in the same PUCCH group.

[0034] In one embodiment, DCI format 0_X / 1_X on the scheduling cell may be used to schedule PUSCH / PDSCH on multiple cells including the scheduling cell.

[0035] In one embodiment, DCI format 0_X / 1_X on the scheduling cell may be used to schedule PUSCH / PDSCH on multiple cells that do not include the scheduling cell.

[0036] In one embodiment, for a UE, the maximum number of cells scheduled by DCI format 0_X may be the same as or different from the maximum number of cells scheduled by DCI format 1_X.

[0037] In one embodiment, for a DCI format supporting multi-cell scheduling, the UE may determine the number of co-scheduled serving cells (e.g., X0 for DCI format 0_X and X1 for DCI format 1_X) based on the gNB configuration (e.g., SS configuration) or as indicated by DCI format 0_X / 1_X.

[0038] In one embodiment, for a DCI format (e.g., DCI format 0_X and / or DCI format 1_X), the UE may determine a set of candidate cells that can be co-scheduled by the DCI format: The set of candidate cells may be included in the same PUCCH group; The set of candidate cells may be configured by higher layer signaling (eg, SS configuration).

[0039] In one embodiment, to discuss the field design of DCI format 0_X / 1_X for scheduling one or more cells, the DCI field types are reformulated as follows: Type 1 fields: Type 1A field: a single field indicating common information for all co-scheduled cells; Type 1B field: a single field indicating separate information for each of the cells co-scheduled via joint indication; Type 1C field: A single field indicating information for only one of the co-scheduled cells. Type 2 fields: Individual fields used for each co-scheduled cell. Type 3 fields: common or individual fields for each of the co-scheduled cells, or individual fields for each subgroup, depending on explicit configuration.

[0040] It should be noted that a subgroup contains a subset of co-scheduled cells where a single field is commonly applied to the co-scheduled cells belonging to the same subgroup.

[0041] In one embodiment, for multi-cell scheduling, the co-scheduled cells are indicated by DCI format 0_X / 1_X. At least the following options are considered: Option 1: The indicator in the DCI points to a row in the table that defines the combination of scheduled cells: The table is configured by RRC signaling; Separate tables may be configured for multi-cell PDSCH scheduling and multi-cell PUSCH scheduling; Option 2: The indicator in the DCI is a bitmap corresponding to the set of configured cells that can be scheduled by DCI0_X / 1_X: Separate sets of configured cells for multi-cell PDSCH scheduling and multi-cell PUSCH scheduling; Option 3: Use an existing field (eg, CIF, FDRA) to indicate whether one or more cells have been scheduled.

[0042] In one embodiment, DCI size alignment is performed on all search spaces configured in the BWP and across all slots, and then for a given DCI format in a given search space, the DCI size is the same between slots. In one embodiment, there is no per-slot dependency (except when BWP switching or some RRC configuration is disabled based on the standard). In one embodiment, the UE may expect to monitor PDCCH candidates for up to four sizes of DCI formats, including up to three sizes of DCI formats with C-RNTI scrambled CRC per serving cell. The UE counts the number of sizes of DCI formats per serving cell based on the number of configured PDCCH candidates in each search space set of the corresponding active DL BWP.

[0043] FIG. 2 is a schematic diagram showing DCI size alignment. Referring to FIG. 2, in step 0, the fallback DCIs (e.g., formats 0_0 and 1_0) monitored in the CSS are determined, and size alignment is performed between the fallback DCIs in the CSS. In step 1, the fallback DCIs monitored in the USS are determined, and size alignment is performed between the fallback DCIs in the USS. In step 2, the non-fallback DCIs (i.e., formats 0_1 and 1_1) monitored in the USS are determined, and the non-fallback DCIs must have a different size from the fallback DCIs in the USS (e.g., by adding padding bits, if necessary). In step 2A, the non-fallback DCIs (i.e., formats 0_2 and 1_2) monitored in the USS are determined, and the non-fallback DCIs must have a different size from the fallback DCIs in the USS (e.g., by adding padding bits, if necessary).

[0044] In Step 3, determine whether both of the following conditions are met: For a cell, the total number of different DCI sizes configured to be monitored is less than or equal to four; For the cell, the total number of different DCI sizes with C-RNTIs configured to monitor is less than or equal to 3. If both of these conditions are met, the size alignment procedure is completed.

[0045] If these conditions are not met, in step 4A, remove the padding bits introduced in steps 2 and 2A, determine the fallback DCIs monitored in the USS, and perform size alignment between the fallback DCIs in the USS.

[0046] In Step 4B, determine whether the following conditions are met: After applying the above steps, the total number of different DCI sizes configured to monitor for the cell is greater than 4; or After applying the above steps, for a cell, the total number of different DCI sizes with C-RNTIs configured to monitor is greater than three. If the number of information bits in DCI format 0_2 before padding is smaller than the payload size of DCI format 1_2 for scheduling the same serving cell, generate the number of zero padding bits for DCI format 0_2 until the payload size is equal to DCI format 1_2. If the number of information bits in DCI format 1_2 before padding is smaller than the payload size of DCI format 0_2 for scheduling the same serving cell, add zeros to DCI format 1_2 until the payload size is equal to DCI format 0_2.

[0047] In Step 4C, determine whether the following conditions are met: After applying the above steps, the total number of different DCI sizes configured to monitor for the cell is greater than 4; or After applying the above steps, for a cell, the total number of different DCI sizes with C-RNTIs configured to monitor is greater than three. If the number of information bits in DCI format 0_1 ​​before padding is smaller than the payload size of DCI format 1_1 for scheduling the same serving cell, generate the number of zero padding bits for DCI format 0_1 ​​until the payload size is equal to DCI format 1_1. If the number of information bits in DCI format 1_1 before padding is smaller than the payload size of DCI format 0_1 ​​for scheduling the same serving cell, add zeros to DCI format 1_1 until the payload size is equal to DCI format 0_1.

[0048] FIG. 3 is a schematic diagram showing DCI size alignment at each step. Referring to FIG. 3, the length of DCI formats 0_0 and 1_0 in the CSS is determined as size A, the length of DCI formats 0_0 and 1_0 in the USS is determined as size B, the length of DCI format 0_1 ​​is determined as size C, the length of DCI format 1_1 is determined as size D, the length of DCI format 0_2 is determined as size E, and the length of DCI format 1_2 is determined as size F. In step 4A, the length of DCI formats 0_0 and 1_0 in the USS is aligned as size A. In step 4B, the length of DCI formats 0_2 and 1_1 is aligned as size G. In step S4C, the length of DCI formats 0_1 and 1_1 is aligned as size H. Finally, there are only three different DCI sizes: size A, size H, and size G.

[0049] FIG. 4 is a schematic diagram illustrating a wireless communication network architecture 1 according to one exemplary embodiment of the present invention. Referring to FIG. 4, a wireless communication network architecture (e.g., a Long Term Evolution (LTE) system, an LTE-Advanced (LTE-A) system, an LTE-Advanced Pro (LTE-A Pro) system, or a 5G NR Radio Access Network (RAN)) typically includes one or more base stations (BS) NW, one or more UEs, and one or more optional network elements that provide connectivity to the network. The UE communicates with a network (e.g., a Core Network (CN), an Evolved Packet Core (EPC) network, an Evolved Universal Terrestrial Radio Access network (E-UTRAN), a 5G Core (5GC), or the Internet) via a RAN established by one or more base stations.

[0050] It should be noted that in the present invention, the UE may include a mobile station, a mobile terminal or device, or a user communication radio terminal, but the present invention is not limited thereto. For example, the UE may be a mobile phone, a tablet, a wearable device, a sensor, a vehicle, or a portable radio device including a personal digital assistant (PDA) with a wireless communication function, but the present invention is not limited thereto. The UE is configured to receive and transmit signals over an air interface to one or more cells in a radio access network.

[0051] The base station NW may be configured to provide communication services based on at least one of the following Radio Access Technologies (RATs): Worldwide Interoperability for Microwave Access (WiMAX), Global System for Mobile communications (GSM, commonly referred to as 2G), Enhanced Data rates for GSM Evolution (EDGE) Radio Access Network (GERAN), General Packet Radio Service (GPRS), Universal Mobile Telecommunication System (UMTS, commonly referred to as 3G) based on basic wideband-code division multiple access (W-CDMA), high-speed packet access (HSPA), LTE, LTE-A, eLTE (evolved LTE, e.g., LTE connected to 5GC), NR (commonly referred to as 5G), and / or LTE-A Pro. However, the scope of the present invention should not be limited to the above-mentioned protocols.

[0052] The base station NW may include, but is not limited to, a node B (NB) in UMTS, an evolved node B (eNB) in LTE or LTE-A, a radio network controller (RNC) in UMTS, a base station controller (BSC) in an EDGE Radio Access Network (GERAN), a next-generation eNB (ng-eNB) in an evolved universal terrestrial radio access network (E-UTRA) BS connecting to 5GC, a next-generation Node B (gNB) in a 5G Access Network (5G-AN), and any other device capable of controlling wireless communication and managing radio resources in a cell. The BS NW may connect to one or more UEs via a wireless interface to the network and provide services.

[0053] A base station (BS) NW (also called a network device) can provide wireless coverage to a particular geographic area using multiple cells included in the RAN. The BS NW can support the operation of cells. Each cell may be operable to serve at least one UE within its wireless coverage. Specifically, each cell (usually called a serving cell) can serve one or more UEs within its wireless coverage (e.g., each cell schedules downlink (DL) and optionally uplink (UL) resources for at least one UE within its wireless coverage and performs DL and optionally UL packet transmissions). The BS NW can communicate with one or more UEs in a wireless communication system via multiple cells.

[0054] The base station NW may include a network node NN and one or more TRPs, for example TRP#1 and TRP#2.

[0055] The network node NN may be, but is not limited to, a Node B (NB) in LTE, an evolved Node B (eNB) in LTE-A, a Radio Network Controller (RNC) in UMTS, a Base Station Controller (BSC) in GSM / GERAN, a New Radio Evolved Node B (NR eNB) in NR, a Next Generation Node B (gNB) in NR, and any other device capable of controlling radio communications and managing radio resources in one or more cells.

[0056] A TRP (e.g., TRP#1 or TRP#2) may also be considered as a remote radio head (RRH) and may be a transceiver based on the protocol of a 5G NR wireless communication system and / or a 4G wireless communication system. The TRP may be communicatively connected to a network node NN. The network node NN may connect to and provide services to one or more UEs via one or more TRPs in the wireless communication system. For example, TRP#1 and TRP#2 provide services to UEs, but the present invention is not limited thereto.

[0057] As mentioned above, the NR frame structure supports flexible configuration to meet various next-generation (e.g., 5G) communication requirements, such as Enhanced Mobile Broadband (eMBB), Massive Machine Type Communication (mMTC), and Ultra-Reliable and Low-Latency Communication (URLLC), while simultaneously meeting high reliability, high data rate, and low latency requirements. Orthogonal Frequency-Division Multiplexing (OFDM) technology agreed upon by 3GPP can be used as a baseline for the NR waveform. Scalable OFDM numerology, such as adaptive subcarrier spacing, channel bandwidth, and cyclic prefix (CP), may also be used. In addition, two coding schemes are considered for NR: (1) Low-Density Parity-Check (LDPC) code and (2) Polar Code. Adaptation of the coding scheme can be configured based on channel conditions and / or service application.

[0058] It should be understood that the terms "system" and "network" used in the present invention are often used interchangeably. "And / or" in the present invention is simply a relational relationship describing related objects, for example, A and / or B means that three kinds of relations may exist, so it can mean three situations: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in the present invention generally indicates that related objects are in an "or" relationship.

[0059] In order to facilitate understanding of the technical solutions of the embodiments of the present invention, the following describes some technical concepts related to the embodiments of the present invention.

[0060] In one embodiment, for multi-cell scheduling, the UE may determine the length (e.g., L) of the DCI format (e.g., DCI format 0_X / 1_X) based on one or more higher layer configurations. In one embodiment, the higher layer configuration (e.g., SS configuration) may indicate the DCI length. The length of DCI format 0_X / 1_X may not be equal to the length of other DCI formats with CRC scrambled by C-RNTI. The length of DCI format 0_X / 1_X may be equal to the length of other DCI formats with CRC scrambled by, for example, SFI-RNTI, INT-RNTI, CI-RNTI, TPC-PUCCH-RNTI, TPC-PUSCH-RNTI, and / or TPC-SRS-RNTI. DCI format 0_X and DCI format 1_X may be configured with the same length or different lengths.

[0061] In one embodiment, the length of a DCI format (e.g., DCI format 0_X / DCI format 1_X) may not be equal to other DCI formats (e.g., DCI format 0_0 / 0_1, DCI format 0_1 / 1_1, and / or DCI format 0_2 / 1_2). For example, after DCI size alignment, the length of DCI format 0_1 / 1_1 may be equal to the length of DCI format 0_2 / 1_2.

[0062] In one embodiment, the length of a DCI format (e.g., DCI format 0_X / DCI format 1_X) may be equal to other DCI formats (e.g., DCI format 0_0 / 0_1, DCI format 0_1 / 1_1 and / or DCI format 0_2 / 1_2), for example, after DCI size alignment.

[0063] For example, Figure 5 is a schematic diagram illustrating DCI size alignment at each step according to one exemplary embodiment of the present invention. Referring to Figure 5, the length of DCI format 0_X is determined as size E', and the length of DCI format 1_X is determined as size F', where size F' may be equal to E'. In step 4C', the lengths of DCI formats 0_X and 1_X may be aligned as size I. However, after step 4C / 4C', there are four different DCI sizes. Therefore, in step 4D, the lengths of DCI formats 0_1, 1_1, 0_2, and 1_2 are aligned as size K, which is equal to the largest one of size G and size H.

[0064] 6 is a schematic diagram illustrating DCI size alignment in each step according to one exemplary embodiment of the present invention. Referring to FIG. 6, instead, in step 4D, the lengths of DCI formats 0_X and 1_X are aligned as size K, which is equal to the largest one of size G and size H. After step 4D, there are three different DCI sizes, and the condition of step 3 is met.

[0065] 7 is a flow chart showing a processing method for multi-cell scheduling according to one exemplary embodiment of the present invention. Referring to FIG. 7, the method is suitable for a UE. The UE receives DCI from a serving cell (step S710). In one embodiment, the first serving cell is provided by TRP#1 or TRP#2 as shown in FIG.

[0066] The UE determines a first number of scheduled cells based on the DCI (step S720). Specifically, the DCI is configured to schedule the UE using one or more communications, for example, to receive a PDSCH or transmit a PUSCH on the scheduled cells. The first number is a positive integer. In one embodiment, the UE can determine the first number of scheduled cells from a third number of scheduled cells. The third number is a positive integer. The first number is less than or equal to the third number. For example, the first number is 3 and the third number is 4. The maximum value of the third number of serving cells is 4, and / or the minimum value of the first number of serving cells is 1.

[0067] The UE performs one or more communications in one or more of the first number of scheduled cells based on the DCI (step S730). Specifically, the DCI includes one or more single DCI fields, one or more individual DCI fields, and one or more configurable DCI fields.

[0068] For example, Figure 8 is a schematic diagram illustrating DCI fields for scheduling communication on four cells according to one exemplary embodiment of the present invention. Referring to Figure 8, in the DCI bitstream, there may be multiple common fields (i.e., single DCI fields), multiple individual fields (i.e., individual DCI fields), and multiple Type 3 fields (i.e., configurable DCI fields). Each Type 3 field may be common information, individual information, or information per subgroup.

[0069] In one embodiment, the following types of DCI fields can be used in a DCI format for multi-cell scheduling: Type 1 fields: A single DCI field indicating common information for all co-scheduled cells; A single DCI field indicating separate information for each co-scheduled cell via joint indication, and / or A single DCI field indicating information for only one of the co-scheduled cells; Type 2 fields: individual fields used for each co-scheduled cell; Type 3 fields: Common or individual fields for each of the co-scheduled cells, or individual fields for each subgroup, based on higher layer configuration.

[0070] In one embodiment, a subgroup may include a subset of co-scheduled cells for which a single DCI field is commonly applied to the co-scheduled cells belonging to the same subgroup. may indicate common information (e.g., PTRS-DMRS association); or Separate information can be indicated for each of the co-scheduled cells in the same subgroup via joint indications (eg, TCI, SRI).

[0071] In one embodiment, the DCI format conveys the following information: Part 1: Identifier of the DCI format (e.g. DCI format 0_X or 1_X) - e.g. 1 bit; Part 2: Indicators for co-scheduled cells, For example, number of co-scheduled cells = X; Part 3: At least one DCI field indicating common information of all co-scheduled cells (e.g., Type 1 field); Part 4: For each DCI field (e.g., for Type 3 fields), determine the number of bits based on higher layer signaling (e.g., common, per subgroup, or individual); Part 5: A first group of DCI fields dedicated to the first co-scheduled cell; For example, the lowest cell ID among the co-scheduled cells (e.g., #1 in Fig. 8); Part 6: A second group of DCI fields dedicated to a second co-scheduled cell; For example, the second lowest cell ID among the co-scheduled cells (e.g., #2 in Fig. 8); Part X+4: Xth group of DCI fields dedicated to the Xth co-scheduled cell; For example, the highest cell ID among the co-scheduled cells (e.g., #4 in Fig. 8); Part X+5: Padding bits, if necessary. Parts 5 through X+4 are Type 2 fields.

[0072] In one embodiment, the DCI format conveys the following information: Part 1: Identifier of the DCI format (e.g. DCI format 0_x or 1_x) - e.g. 1 bit; Part 2: Indicators for co-scheduled cells, For example, number of co-scheduled cells = X; Part 3: For each of the remaining DCI fields in the DCI format, determine the number of bits based on its type (e.g., common, per subgroup, or individual); Part 4: Padding bits, if necessary.

[0073] In one embodiment, the single DCI field corresponds to one, some, or all of the first number of scheduled cells with which the UE has one or more communications (e.g., receives a PDSCH or transmits a PUSCH), i.e., the UE can receive a PDSCH or transmit a PUSCH on the scheduled cell indicated in the single DCI field if, or only if, the single DCI field indicates scheduled cell information from the first number of scheduled cells.

[0074] Taking FIG. 8 as an example, the common field indicates information of Cell#1 to Cell#4. Cell#1 to Cell#4 are co-scheduled cells indicated by DCI. Therefore, a UE that receives DCI can receive PDSCH or transmit PUSCH on Cell#1 to Cell#4.

[0075] Figure 9 is a schematic diagram illustrating DCI fields for three cells according to one exemplary embodiment of the present invention. In Figure 9, the common fields indicate information of Cell#1 to Cell#3. Cell#1 to Cell#3 are co-scheduled cells indicated by the DCI. Therefore, a UE that receives the DCI can receive PDSCH or transmit PUSCH on Cell#1 to Cell#3.

[0076] Figure 10 is a schematic diagram illustrating DCI fields for three cells according to one exemplary embodiment of the present invention. Referring to Figure 10, the common fields indicate information of Cell#A to Cell#C. Cell#A to Cell#C are co-scheduled cells indicated by the DCI. Therefore, a UE that receives the DCI can receive PDSCH or transmit PUSCH on Cell#A to Cell#C.

[0077] In one embodiment, the single DCI field may include at least one of the following: an identifier of the DCI format (e.g. DCI format 0_X or 1_X), e.g. in 1 bit; An indicator of co-scheduled cells (e.g., number of co-scheduled cells = X); Bandwidth part (BWP) indicator for multiple scheduled cells supporting dynamic BWP switching; Downlink Allocation Index; physical uplink control channel (PUCCH) transmission power control (TPC) commands (if the DCI format is DCI format 1_X); PUCCH resource indicator (if DCI format is DCI format 1_X); Physical downlink shared channel to hybrid automatic repeat request (PDSCH to HARQ) timing indicator (if the DCI format is DCI format 1_X); One-shot HARQ-ACK request (if the DCI format is DCI format 1_X); Beta offset indicator (if the DCI format is DCI format 0_X); A channel state information (CSI) request (if the DCI format is DCI format 0_X); and Time Domain Resource Allocation (TDRA).

[0078] In one embodiment, the individual DCI fields correspond to a second number of information blocks, each information block indicating control information of one of the scheduled cells. Taking FIG. 8 as an example, the individual fields indicate control information of Cell#1 to Cell#4 for each information block. That is, the four information blocks correspond to Cell#1 to Cell#4, respectively. Taking FIG. 9 as an example, the individual fields indicate control information of Cell#1 to Cell#3 for each information block. Taking FIG. 10 as an example, the individual fields indicate control information of Cell#A to Cell#C for each information block.

[0079] In one embodiment, the second number is equal to the first number. For example, if there are four scheduled cells, the DCI includes a separate DCI field having four information blocks.

[0080] In one embodiment, the second number of information blocks are arranged based on the ascending order of the serving cell index, and the first information block corresponds to the smallest serving cell index. Taking FIG. 8 as an example, the ascending order is #1, #2, #3, and #4. The first information block corresponds to Cell#1. Taking FIG. 10 as an example, the ascending order is #A, #B, and #C. The first information block corresponds to Cell#A. However, in another embodiment, the order of the information blocks may be arranged based on the descending order of the serving cell index, or may be arranged in another order.

[0081] In one embodiment, the control information corresponds to one of the following: new data indicator (NDI); redundancy version (RV); modulation coding scheme (MCS); and Frequency domain resource assignment (FDRA).

[0082] In one embodiment, the UE may determine, based on higher layer configuration, whether the Type 3 field (e.g., a configurable field) is a common field or an individual field for each of the first number of scheduled cells (e.g., co-scheduled cells), or whether it is an individual field for each subgroup.

[0083] In one embodiment, when the configurable DCI field is a first type, the UE can determine one of the one or more configurable DCI fields corresponding to the first number of scheduled cells, and when the configurable DCI field is a second type, the UE can determine one of the one or more configurable DCI fields including a plurality of information blocks, each information block corresponding to a subgroup or one of the first number of scheduled cells. For example, the first type is the above-mentioned Type 1 or a common type, and the second type is the above-mentioned Type 2 or an individual type. Taking FIG. 8 as an example, the (N-1)th type 3 field is a common DCI field, and the common field corresponds to all Cell#1 to Cell#4. The Nth type 3 field is an individual field, and each information block of the individual field corresponds to one subgroup. One subgroup may be any combination of Cell#1 to Cell#4 based on higher layer configuration. Taking FIG. 10 as an example, the first type 3 field is an individual field, and each information block of the individual field corresponds to one of Cell#A to Cell#C.

[0084] In one embodiment, for a DCI (Type 3) field, the UE may receive a higher layer (e.g., SS configuration) configuration to determine whether the DCI field is a common field for co-scheduled cells (Case 1), an individual field (Case 2), or a common field for a subgroup (Case 3). For example, the configuration may include at least one of the following: The identifier of the type 3 field, e.g., Type3FieldID; A set of serving cells corresponding to the Type3FieldID, e.g., Type3CellGroup; A field type (e.g., FieldType) that indicates the DCI field as one of the following cases: Individual fields / information for every cell, Show common fields / information, or indicating separate fields / information for each of the co-scheduled cells in the same subgroup via joint indication; If the field type is indicated as a common field, the reference cell for determining information from the DCI field (e.g., ReferenceCell); List of DCI fields, e.g., Rate Matching Indicator, ZP CSI-RS Trigger, TCI, etc.

[0085] In one embodiment, the configurable DCI fields include at least one of the following: Rate matching indicator; Zero power (ZP) channel state information-reference signal (CSI-RS) trigger; Precoding information and number of layers; Phase-tracking reference signal-demodulation reference signal (PTRS-DMRS) related; Antenna ports; transmission configuration indicator (TCI); Sounding reference signal (SRS) request; DMRS sequence initialization; SRS resource indicator (SRI); and Physical resource block (PRB) bundle size indicator.

[0086] In one embodiment, for a set of DCI fields, each of the set of DCI fields indicates common information for a subgroup of a first number of scheduled cells (e.g., co-scheduled cells). For example, the set of SRI fields includes two SRIs, where a first SRI indicates common information for a first subgroup of co-scheduled cells and a second SRI indicates common information for a second subgroup of co-scheduled cells. As another example, the PRB bundle size indicator includes two bits, where a first bit indicates a first PRB bundle size for a first subgroup of co-scheduled cells and a second bit indicates a first PRB bundle size for a second subgroup of co-scheduled cells.

[0087] In one embodiment, based on higher layer configuration, the subset of co-scheduled cells may include, for example, the first serving cell mentioned above. The set of DCI fields includes X individual pieces of information for the X co-scheduled cells, respectively. Take FIG. 8 as an example, X=4, and the DCI field includes four individual pieces of information blocks for Cell#1 to Cell#4.

[0088] In one embodiment, based on higher layer configuration, the subset of co-scheduled cells may include all co-scheduled cells. Take Fig. 9 as an example, the subset of co-scheduled cells includes Cell#1 to Cell#3.

[0089] In one embodiment, when the UE is configured with a DCI format for multi-cell PUSCH / PDSCH scheduling (e.g., with M candidate serving cells), for each of the scheduled serving cells, the UE can determine the TDRA based on a common TDRA field in the DCI format. For example, in Table 1, each code point of the TDRA field can include at least one of K0 (or K2), SLIV, and mapping type for each of the M candidate serving cells. M may be a predefined value, a fixed value, or may be set by a network device. The UE can determine the TDRA of each of the scheduled serving cells based on its TDRA configuration and the numerology (e.g., SCS) of the PDCCH and PUSCH / PDSCH.

[0090] [Table 1]

[0091] 11 is a schematic diagram illustrating a DCI field with a joint indication according to one exemplary embodiment of the present invention. Referring to FIG. 11, the DCI indicates multi-cell PDSCH transmission on cell B and cell C (selected from cell A to cell E), and the TDRA field indicates 3. Therefore, the UE selects K0 for PDSCH transmission on cell B. B,3 and SLIV B,3 The TDRA is determined based on the K0 C,3 and SLIV C,3 The TDRA can be determined based on the above.

[0092] In one embodiment, the UE may apply one of the one or more configurable DCI fields to the scheduled cell if type information is not present in one of the configurable DCI fields. The type information indicates one of the one or more configurable DCI fields as one or more single DCI fields and / or the type information indicates one of the one or more configurable DCI fields as one or more individual DCI fields. Each configurable DCI field has corresponding type information. The type information is provided via higher layer signaling. This is the case, for example, when the gNB has not configured type information for one of the configurable DCI fields via higher layer signaling, or when the DCI does not carry type information or does not have a corresponding field of type information. Another example is when the DCI has a corresponding field of type information, but the field is configured as zero, null, or invalid. For example, for DCI format 0_X / 1_X, if there is no UE information / configuration to determine whether the Type 3 field is a common field for co-scheduled cells, an individual field, or an individual field for each subgroup, the UE may process the Type 3 field as a common field, which indicates information for one or more co-scheduled cells.

[0093] In one embodiment, the UE may determine one of the one or more configurable DCI fields corresponding to the second number of information blocks when type information is not present in one of the one or more configurable DCI fields. The type information indicates one of the one or more configurable DCI fields as one of the one or more single DCI fields or one of the one or more individual DCI fields. Each configurable DCI field has corresponding type information. The type information is provided via higher layer signaling. This is the case, for example, when the gNB does not configure type information for one of the configurable DCI fields via higher layer signaling, or when the DCI does not carry type information or does not have a corresponding field of type information. Another example is when the DCI has a corresponding field of type information but the field is configured as zero, empty, or invalid. For example, for DCI format 0_X / 1_X, if there is no UE information / configuration to determine whether the Type 3 field is a common field for co-scheduled cells, an individual field, or an individual field for each subgroup, the UE may process the Type 3 field as an individual field. Each individual field indicates control information for one co-scheduled cell. In one embodiment, the second number is equal to the first number.

[0094] In one embodiment, the DCI is configured in a UE-specific search space (USS), and the length of the DCI is determined based on one or more higher layer configurations, for example, the higher layer configuration is a USS configuration.

[0095] In one embodiment, the DCI is scrambled by a cell-radio network temporary identity (C-RNTI), and the length of the DCI is not equal to the length of a first DCI (i.e., another DCI) having a different format scrambled by the C-RNTI.

[0096] In one embodiment, the UE may determine the length of the information blocks in the individual DCI fields or the configurable DCI fields to be the same. The length of each individual DCI field or each configurable DCI field is pre-determined. Taking FIG. 8 as an example, the length of the four information blocks in each of the individual fields of Cell#1 to Cell#4 is the same. In one embodiment, the UE may determine the length of the information blocks in the individual DCI fields or the configurable DCI fields based on one or more higher layer signalings. One higher layer signaling is used for one of the information blocks corresponding to the scheduled cell. For example, the RRC configuration indicates the length of the information blocks in one field.

[0097] FIG. 12 is a schematic diagram illustrating inconsistent DCI lengths according to one exemplary embodiment of the present invention. Referring to FIG. 12, for example, the length of the DCI is set as L for three cells, for example, Cell#1 to Cell#3. However, due to BWP switching, there may be different numbers of co-scheduled cells, different combinations of co-scheduled serving cells, and / or different combinations of BWP sizes in the co-scheduled cells. This length may not be suitable for four cells, for example, Cell#3 to Cell#6, and the corresponding DCI field of Cell#6 may not be in the DCI format.

[0098] In one embodiment, the UE can apply the default value of the control information of the DCI when there is no control information in the DCI. For example, when the DCI does not carry one control information corresponding to the scheduled cell or has no corresponding field of the control information. Also, for example, when the DCI does not carry valid control information corresponding to the scheduled cell. Take Figure 12 as an example, the default value of the control information is applied to Cell#6.

[0099] In one embodiment, the UE may apply default values / patterns or default UE behavior (e.g., based on UE capabilities) for DCI fields that are not in the DCI format (e.g., due to DCI length limitations). For example, the UE may apply a default value / pattern (e.g., 0 or a gNB setting) for "RV" if the indicator is not in the DCI format, a default value / pattern (e.g., "00" or a gNB setting) for "antenna port" if the indicator is not in the DCI format, a default value / pattern (e.g., "0000") for "TPMI" if the TPMI is not in the DCI format, a single antenna port transmission of PUSCH may be assumed if the corresponding "TPMI" is not in the DCI format, a default spatial relation for PUSCH may be applied if the corresponding "SRI" is not in the DCI format, and / or a default spatial relation (e.g., TCI state) for PDSCH if the corresponding "TCI" is not in the DCI format.

[0100] In one embodiment, if there is no control information of one of the scheduled cells in the DCI, the UE may not perform one of the one or more communications to one of the scheduled cells. This is, for example, when the DCI does not carry one control information corresponding to the scheduled cell or does not have a corresponding field of the control information. Taking FIG. 12 as an example, the UE may not perform PUSCH transmission or PDSCH reception on Cell#6 when or only when a specific DCI field (e.g., TDRA, FDRA, MCS, etc.) corresponding to Cell#6 is not in the DCI format and / or when the UE does not have enough DCI to follow the instruction.

[0101] In one embodiment, the UE may apply a quasi-co-location (QCL) assumption for one or more in-communication physical downlink shared channels (PDSCHs) based on the TCI state with the lowest identification (ID) applicable to the PDSCH when there is no transmission configuration indicator (TCI) state in the DCI, for example when the DCI does not carry a TCI state or does not have a corresponding field for the TCI state, or as another example when the DCI has a corresponding field for the TCI state but the field is set as zero, empty, or invalid.

[0102] In a situation where a UE receives a DCI on one serving cell and one of the one or more PDSCHs (e.g., PDSCH#1) scheduled by the DCI is performed on the same serving cell, the UE cannot obtain the TCI field corresponding to the serving cell by the DCI (e.g., due to the limitation of DCI length). If the offset between the reception of the DCI and PDSCH#1 is smaller than a threshold timeDurationForQCL, the UE may determine the PDSCH QCL assumption based on the CORESET with the CORESET ID (e.g., the lowest CORESET ID). Otherwise, the UE may determine the PDSCH QCL assumption based on the CORESET that transmits the DCI that schedules the PDSCH.

[0103] In a situation where a UE receives a DCI on one serving cell and one of the PDSCHs (e.g., PDSCH#1) scheduled by the DCI is carried on another serving cell, the UE may obtain a QCL assumption for the scheduled PDSCH (e.g., PDSCH#1) from the activated TCI state with an ID (e.g., the lowest ID) applicable to the PDSCH in the active BWP of the scheduled cell. The UE may be configured by higher layer signaling (e.g., enableDefaultBeamForCCS) to enable a default beam for CCS.

[0104] In one embodiment, the UE may apply a sounding reference signal (SRS) resource indicator (SRI) to one or more physical uplink shared channel (PUSCH) repetitions or one or more PUSCHs when a SRS resource set is configured. That is, one SRS resource set is configured for a serving cell, i.e., a single panel. The SRI is given by a first DCI field including one SRS resource indicator, and the first DCI field is in the DCI. Figure 13A is a schematic diagram illustrating a single panel operation according to one exemplary embodiment of the present invention. Referring to Figure 13A, one SRS resource set includes two SRS resources corresponding to SRI=0 and SRI=1, respectively. Table 2 is a mapping table between the spatial relationship between the PUSCH and the SRI.

[0105] [Table 2]

[0106] If SRI=0 is configured in the first DCI field in the DCI, the spatial relationship of the PUSCH transmission corresponds to an SRS resource with SRI=0 (e.g., X in the figure). If SRI=1 is configured in the first DCI field in the DCI, the spatial relationship of the PUSCH transmission corresponds to an SRS resource with SRI=1 (e.g., Y in the figure).

[0107] In one embodiment, if there is no SRS resource set indicator in the DCI, the UE may apply the SRI to one or more PUSCH repetitions or one or more PUSCHs based on one SRS resource set if an SRS resource set is configured, for example, when the DCI does not carry an SRS resource set indicator or does not have a corresponding field of the SRS resource set indicator, or as another example, when the DCI has a corresponding field of the SRS resource set indicator but the field is set as zero, empty, or invalid.

[0108] In one embodiment, the UE may apply the SRI to one or more physical uplink shared channel (PUSCH) repetitions or one or more PUSCHs based on a first one of multiple SRS resource sets when an SRS resource set is configured, i.e., multiple SRS resource sets are configured, i.e., multi-panel.

[0109] For example, Figure 13B is a schematic diagram illustrating a multi-panel operation according to an exemplary embodiment of the present invention. Referring to Figure 13B, two SRS resource sets, a first SRS resource set and a second SRS resource set, are configured for a serving cell.

[0110] Table 3 shows the spatial relationship between PUSCH repetition and SRS resource set indicator.

[0111] [Table 3]

[0112] For example, if an SRS resource set indicator="00" is indicated in the first DCI field in the DCI, the spatial relationship of the PUSCH repetitions corresponds to the first SRS resource set. The multiple "A"s in Table 3 represent multiple consecutive PUSCHs (i.e., PUSCH repetitions) performed in association with the first SRS resource set. If an SRS resource set indicator="01" is indicated in the first DCI field in the DCI, the spatial relationship of the PUSCH repetitions corresponds to the second SRS resource set. The multiple "B"s in Table 3 represent multiple consecutive PUSCHs (i.e., PUSCH repetitions) performed in association with the second SRS resource set. However, if an SRS resource set indicator="11" is indicated in the first DCI field in the DCI, the spatial relationship of the PUSCH repetitions corresponds to the first and second SRS resource sets, respectively.

[0113] For each SRS resource set (e.g., A or B as shown), the UE may determine the spatial relationship (e.g., X or Y) of the PUSCH based on the SRI described in the above embodiment corresponding to FIG. 13A.

[0114] In one embodiment, when there is no SRS resource set indicator in the DCI, the UE can apply SRI to one or more PUSCH repetitions or one or more PUSCHs based on the first one of multiple SRS resource sets when an SRS resource set is configured. Take Figures 13A and 13B as an example, when two SRS resource sets are configured, the SRS resource set indicator does not exist in the DCI, so the UE can perform PUSCH repetitions or PUSCHs based on the SRI shown in Table 2.

[0115] In one embodiment, the one or more PUSCHs may be one or more PUSCH repetitions for a TB when or only when the UE is indicated by the DCI to transmit one or more PUSCHs on the serving cell. For example, FIG. 14 is a schematic diagram illustrating the relationship determination according to one exemplary embodiment of the present invention. Referring to FIG. 14, Cell#0 to Cell#3 are candidate cells for multi-cell scheduling. The DCI may indicate PUSCH repetitions with the same TB for Cell#2, for example, PUSCH#20 in slot n and PUSCH#21 in slot n+1.

[0116] In one embodiment, one or more PUSCHs may correspond to one or more TBs when or only when the UE is indicated by the DCI to transmit one or more PUSCHs on the serving cell. For example, the DCI may indicate two PUSCHs with two different TBs for Cell#3, e.g., PUSCH#30 in slot n and PUSCH#31 in slot n+1.

[0117] In one embodiment, in the absence of a Sounding Reference Signal (SRS) Resource Indicator (SRI) in the DCI, determine the spatial relationship of the at least one PUSCH based on any of the following: the spatial relationship of the reference cell or co-scheduled serving cells; Path loss reference signal (PL-RS) configured for the SRS resource set; a given SRI associated with a set of SRS resources; A transmission configuration indicator (TCI) state having a physical downlink shared channel (PDSCH) identity (ID); Physical uplink control channel (PUCCH) ID; The quasi-collocation (QCL) assumption; and ID of the control resource set (CORESET), for example, if the DCI does not carry an SRI or does not have a corresponding field in the SRI, or, as another example, if the DCI has a corresponding field in the SRI but the field is set as zero, empty or invalid.

[0118] In one embodiment, if one SRS resource set is configured for a serving cell, when the UE is indicated by the DCI to transmit one or more PUSCHs on the serving cell, the UE may determine the spatial relationship of the one or more PUSCHs based on the spatial configuration / relationship of the referenced / co-scheduled serving cells. The referenced / co-scheduled serving cells may be configured by the network device or based on a predefined rule (e.g., the lowest cell ID among the co-scheduled cells). The referenced / co-scheduled cells may be indicated in spatial relationship via the SRI field in the DCI.

[0119] For example, Figure 15 is a schematic diagram illustrating the relationship determination of one Sounding Reference Signal (SRS) resource set configured for a serving cell according to one exemplary embodiment of the present invention. Referring to Figure 15, DCI includes an SRI field of PUSCH #1 in Cell #0. Cell #0 is a reference cell for Cell #1 to Cell #3. The UE determines the spatial relationship of PUSCH #2 and PUSCH #3 based on the SRI of PUSCH #1. For example, SRI=0 is configured for PUSCH #1, and the spatial relationship of PUSCH #2 and PUSCH #3 also corresponds to SRI=0.

[0120] In one embodiment, when an SRS resource set is configured for a serving cell, when the UE is indicated by the DCI to transmit one or more PUSCHs on the serving cell, the UE may determine the spatial relationship of the one or more PUSCHs based on the spatial relationship of the PL-RS configured for the SRS resource set or a predefined SRI (e.g., first) associated with the SRS resource set. For example, when there is no SRI (e.g., corresponding to the serving cell) in the DCI, when there is no reference cell for determining the spatial relationship, and / or when the reference cell of the serving cell is not scheduled by the DCI, the predefined SRI corresponds to the spatial relationship of the PUSCHs. When the UE is indicated by the DCI to transmit one or more PUSCHs on the serving cell, the UE may not transmit the one or more PUSCHs when there is no SRI (e.g., corresponding to the serving cell) in the DCI.

[0121] In one embodiment, when an SRS resource set is configured for a serving cell, and the UE is indicated by the DCI to transmit one or more PUSCHs on the serving cell, the UE may determine the spatial relationship of the one or more PUSCHs based on the active PDSCH TCI state having an ID (e.g., the lowest ID) in the active DL BWP of the serving cell. For example, when there is no SRI (e.g., corresponding to the serving cell) in the DCI, when there is no reference cell for determining the spatial relationship, and / or when the reference cell of the serving cell is not scheduled by the DCI, the active PDSCH TCI state having the lowest ID in the active DL BWP corresponds to the spatial relationship of the PUSCH.

[0122] 16 is a schematic diagram illustrating a relationship determination of one SRS resource set configured for a serving cell according to one exemplary embodiment of the present invention. Referring to FIG. 16, the UE can determine the spatial relationship of PUSCH#1 based on the active PDSCH TCI state with the lowest ID in the active DL BWP of cell#1.

[0123] In one embodiment, if one SRS resource set is configured for a serving cell, when the UE is indicated by the DCI to transmit one or more PUSCHs on the serving cell, the UE may determine the spatial relationship of one or more PUSCHs based on the spatial configuration / relationship of the PUCCH with an ID (e.g., the lowest ID). For example, when there is no SRI (e.g., corresponding to the serving cell) in the DCI, when there is no reference cell for determining the spatial relationship, and / or when the reference cell of the serving cell is not scheduled by the DCI, the spatial configuration / relationship of the PUCCH with the lowest ID corresponds to the spatial relationship of the PUSCH. The PUCCH may be configured in the serving cell. The PUCCH may be configured in other serving cells and may be configured in the same cell group (e.g., PUCCH cell group) as the serving cell.

[0124] Taking Figure 16 as an example, the UE determines the spatial relationship of PUSCH#1 based on the spatial configuration / relationship of the PUCCH with the lowest ID of cell#1. Cell#1 may be a Pcell, a PScell, a PUCCH Scell, or a PUCCH sScell.

[0125] In one embodiment, when multiple SRS resource sets are configured, the UE may determine a first relationship between at least one of the multiple SRS resource sets and one or more PUSCH repetitions or a second relationship between at least one of the SRS resource sets and one or more PUSCHs based on the SRS resource set indicator in the DCI. The UE may transmit one or more PUSCH repetitions based on the first relationship between at least one of the SRS resource sets and the one or more PUSCH repetitions or may transmit one or more PUSCHs based on the second relationship between at least one of the SRS resource sets and one or more PUSCHs. For example, when two SRS resource sets are configured for a serving cell, the (e.g., multi-cell) scheduling DCI may indicate the following transmission schemes with less DCI overhead: Method 0: Multi-TRP operation Method 1: SRS resource set selection (panel selection), There is a (e.g., 1-bit) SRS resource set indicator in the DCI corresponding to the serving cell; For example, panel selection for single TRP operation; Method 2: Dynamic single / multiple TRP operation (e.g., for transport blocks); There is no SRS resource set indicator in the DCI corresponding to the serving cell; For example, single TRP / multiple TRP operation.

[0126] In one embodiment, in scheme 0, the UE is indicated by the DCI to transmit one or more PUSCHs on the serving cell, and there is an SRS resource set indicator (e.g., having 2 bits) corresponding to the serving cell in the DCI. For example, if the DCI indicates codepoint "00" for the SRS resource set indicator, a first SRS resource set may be associated with one or more PUSCHs. If the DCI indicates codepoint "01" for the SRS resource set indicator, a second SRS resource set may be associated with one or more PUSCHs. If the DCI indicates codepoint "10" for the SRS resource set indicator, the first and second SRS resource sets are applied to the first and second (if present) PUSCH repetitions, respectively, and the same SRS resource set mapping pattern continues for the remaining PUSCH repetitions (if present). If the DCI indicates codepoint “11” for the SRS resource set indicator, the second and first SRS resource sets are applied to the first and second (if present) PUSCH repetitions, respectively, and the same SRS resource set mapping pattern continues for the remaining PUSCH repetitions (if present).

[0127] In one embodiment, in scheme 0, the UE is indicated by the DCI to transmit one or more PUSCHs on the serving cell, and there is an SRS resource set indicator (e.g., 1 bit) corresponding to the serving cell in the DCI. For example, if the DCI indicates a codepoint "0" for the SRS resource set indicator, the first and second SRS resource sets are applied to the first and second (if present) PUSCH repetitions, respectively, and the same SRS resource set mapping pattern follows for the remaining PUSCH repetitions (if present). If the DCI indicates a codepoint "1" for the SRS resource set indicator, the second and first SRS resource sets are applied to the first and second (if present) PUSCH repetitions, respectively, and the same SRS resource set mapping pattern follows for the remaining PUSCH repetitions (if present).

[0128] For example, Figure 17 is a schematic diagram illustrating relationship determination for multi-panel operation according to one exemplary embodiment of the present invention. Referring to Figure 17, Table 4 is a mapping table between the SRS resource set indicator and the PUSCH repetition scheme. If the SRS resource set indicator is configured with code point "0", the PUSCH repetition pattern is "AB" or "AABB". If the SRS resource set indicator is configured with code point "1", the PUSCH repetition pattern is "BA" or "BBAA".

[0129] [Table 4]

[0130] In one embodiment, in Manner 0, the UE is indicated by the DCI to transmit one or more PUSCHs on a serving cell, and there is an SRS resource set indicator corresponding to the serving cell in the DCI. The UE may determine one or more spatial relationships of the one or more PUSCHs based on two SRIs for the serving cell in the DCI, where the first SRI may be associated with a first SRS resource set indicated in the DCI, and the second SRI may be associated with a second SRS resource set indicated in the DCI.

[0131] In one embodiment, if there is no SRI in the DCI, the UE may determine a spatial relationship of at least one PUSCH based on any one of the following: a given SRI associated with one of the SRS resource sets; A path loss reference signal (PL-RS) configured for one of the SRS resource sets; A transmission configuration indicator (TCI) state having a physical downlink shared channel (PDSCH) identity (ID); Physical uplink control channel (PUCCH) identification (ID); and Quasi-collocation (QCL) assumptions or values ​​of the control resource set (CORESET).

[0132] For example, if there is no serving cell SRI in the DCI, for a spatial relationship applied to a first SRS resource set, a given SRI (e.g., a first SRI) may be associated with the first SRS resource set and / or may apply the spatial relationship of the PL-RS configured for the first SRS resource set, and for a spatial relationship applied to a second SRS resource set, a given SRI (e.g., a second SRI) may be associated with the second SRS resource set and / or may apply the spatial relationship of the PL-RS configured for the second SRS resource set.

[0133] For example, if there is no SRI of the serving cell in the DCI, the UE may determine at least one spatial relationship of one or more PUSCHs based on an active PDSCH TCI state having an ID (e.g., the smallest ID) and having two TCI states in the active DL BWP of the serving cell, e.g., the first and second TCI states of the PDSCH TCI state ID correspond to the spatial relationship of the first and second SRS resource sets, respectively.

[0134] For example, if there is no SRI of the serving cell in the DCI, the UE may determine at least one spatial relationship of one or more PUSCHs based on the spatial configuration / relationship of a PUCCH having an ID (e.g., the smallest ID), e.g., the spatial configuration / relationship with a relatively low or relatively high ID configured for the PUCCH corresponds to the spatial relationship of the first and second SRS resource sets, respectively.

[0135] For example, if there is no SRI of the serving cell in the DCI, the UE may determine at least one spatial relationship of one or more PUSCHs based on the spatial relationship of a CORESET having a QCL assumption (e.g., of type D) or ID (e.g., the smallest ID), e.g., a first or second TCI state configured for a CORESET corresponds to the spatial relationship of the first and second SRS resource sets, respectively, a TCI state configured for a CORESET of a first CORESET pool index corresponds to the spatial relationship of the first SRS resource set, and a TCI state configured for a CORESET of a second CORESET pool index corresponds to the spatial relationship of the second SRS resource set.

[0136] For example, if there is no SRI of the serving cell in the DCI, the UE may determine at least one spatial relationship of one or more PUSCHs applied to the first SRS resource set based on one SRI of the serving cell in the DCI associated with the first SRS resource set. As another example, if there is no SRI of the serving cell in the DCI, the UE may determine at least one spatial relationship of one or more PUSCHs applied to the second SRS resource set based on a predefined SRI (e.g., first) associated with the second SRS resource set, the spatial relationship of the PL-RS configured for the second SRS resource set, an active PDSCH TCI state having an ID (e.g., smallest ID) and having two TCI states in the active DL BWP of the serving cell, the spatial configuration / relationship of the PUCCH having an ID (e.g., smallest ID), and / or the (e.g., type D) QCL assumption or spatial relationship of the CORESET having an ID (e.g., smallest ID).

[0137] Figure 18 is a schematic diagram illustrating panel selection according to one exemplary embodiment of the present invention. Referring to Figure 18, in scheme 1, the UE is indicated by DCI to transmit at least one or more PUSCHs on a serving cell, and there is an SRS resource set indicator (e.g., 1 bit) corresponding to the serving cell in the DCI. If the DCI indicates a code point "0" for the SRS resource set indicator, the first SRS resource set can be associated with one or more PUSCHs (e.g., case 1 in the figure). If the DCI indicates a code point "1" for the SRS resource set indicator, the second SRS resource set can be associated with one or more PUSCHs (e.g., case 2 in the figure).

[0138] In one embodiment, in scheme 1, the UE is indicated by the DCI to transmit at least one or more PUSCHs on a serving cell, and there is an SRS resource set indicator (e.g., one bit) corresponding to the serving cell in the DCI. The UE can determine one or more spatial relationships of the one or more PUSCHs based on one or more SRI fields in the DCI. One SRI field can correspond to a serving cell. The UE can apply the indicated SRI to the one or more PUSCHs based on the associated SRS resource set indicated by the SRS resource set indicator. The serving cell may be a reference serving cell (e.g., configured by a network device or based on a cell ID) for determining the SRI of all or a subgroup of candidate serving cells. For any serving cell in the candidate cells for multi-cell scheduling (or any cell in the same subgroup), the UE can determine the spatial relationship based on the reference cell and the SRI.

[0139] For example, Figure 19 is a schematic diagram illustrating a relationship determination of multi-panel operation according to one exemplary embodiment of the present invention. Referring to Figure 19, an SRS resource set indicator corresponding to a first SRS resource set is configured in the DCI provided by TRP#1. The UE can further check the SRI field corresponding to the serving cell provided by TRP#1, and perform PUSCH transmission based on the SRI field corresponding to the serving cell (e.g., SRI=“0”).

[0140] In one embodiment, in scheme 1, the UE is indicated by the DCI to transmit at least one or more PUSCHs on a serving cell, and an SRS resource set indicator (e.g., one bit) corresponding to the serving cell is present in the DCI. In the absence of an SRI in the DCI, the UE may determine one or more spatial relationships of the one or more PUSCHs based on any one of the following: spatial configuration / relationships of referenced / co-scheduled serving cells; For example, the SRI of the reference cell (based on the SRS resource set indicator); an active PDSCH TCI state with an ID (e.g., the lowest ID) within the active DL BWP of the serving cell; For example, the first or second TCI state of the PDSCH TCI state ID (based on the SRS resource set indicator); Spatial configuration / relationship of PUCCH with ID (e.g., lowest ID); For example, the spatial configuration / relationship of the PUCCH with an ID (e.g., the lowest ID); and QCL hypothesis or spatial relationship (e.g., of type D) of the CORESET with ID (e.g., lowest ID); For example, the first or second TCI state of the PDSCH TCI state ID (based on the SRS resource set indicator). The UE may assume that one or more PUSCHs are scheduled with a single layer (single antenna port) transmission.

[0141] In one embodiment, in scheme 1, the UE is indicated by the DCI to transmit at least one or more PUSCHs on a serving cell, and there is an SRS resource set indicator (e.g., one bit) corresponding to the serving cell in the DCI. The UE can determine one or more spatial relationships of the one or more PUSCHs based on an active PDSCH TCI state having a spatial relationship or ID (e.g., the lowest ID) of the PL_RS configured for the SRS resource set indicated by the SRS resource set indicator and having two TCI states in the active SL BWP of the serving cell (e.g., the first and second TCI states of the PDSCH TCI state ID correspond to the spatial relationship of the first and second SRS resource sets, respectively). The UE can assume that the one or more PUSCHs are scheduled with a single layer (single antenna port) transmission.

[0142] For example, when there is no SRI (e.g., corresponding to the serving cell) in the DCI, when there is no reference cell for determining the spatial relationship, and / or when the reference cell of the serving cell is not scheduled by the DCI, the UE may determine the spatial relationship of the PUSCH as the PL_RS configured for the indicated SRS resource set in the DCI or the active PSCH TCI state with the lowest ID and two TCI states.

[0143] In scheme 2, the UE is indicated by a DCI to transmit one or more PUSCHs on a serving cell, and the DCI can dynamically indicate single-TRP or multi-TRP transmission for the one or more PUSCHs. In one embodiment, the UE can determine a spatial relationship of the one or more PUSCHs based on one or more demodulation reference signal (DMRS) ports indicated by an antenna port field in the DCI.

[0144] For example, Figure 20 is a schematic diagram illustrating dynamic single / multiple panel operation according to one exemplary embodiment of the present invention. Referring to Figure 20, in case 1, a DCI field in the DCI indicates a DMRS port corresponding to a first SRS resource set, and the UE can perform PUSCH transmission on the first SRS resource set. In case 2, a DCI field in the DCI indicates a DMRS port corresponding to a first and a second SRS resource set, and the UE can perform PUSCH transmission on the first and the second SRS resource sets.

[0145] In one embodiment, the multiple DMRS ports include two DMRS ports multiplexed in one or more symbols DMRS in a code division manner, and each DMRS port is associated with a DMRS code division multiplexing (CDM) group.

[0146] For example, Figure 21 is a schematic diagram illustrating the association of demodulation reference signal (DMRS) ports and code division multiplexing (CDM) groups according to one exemplary embodiment of the present invention. Referring to Figure 21, antenna ports 1000 / 1001 correspond to a first SRS resource set, and antenna ports 1002 / 1003 correspond to a second SRS resource set. In one symbol DMRS and one PRB, two DMRS ports are multiplexed in a code division manner.

[0147] Table 5 is a mapping table between DMRS ports with transform precoder disabled, dmrs-Type=1, maxLength=1, and rank=1, and SRS resource sets.

[0148] [Table 5]

[0149] Table 6 is a mapping table between DMRS ports with transform precoder disabled, dmrs-Type=1, maxLength=1, and rank=2, and SRS resource sets.

[0150] [Table 6]

[0151] Table 7 is a mapping table between the DMRS ports with transform precoder disabled, dmrs-Type=1, maxLength=1, and rank=3, and the multi-panel SRS resource set as default.

[0152] [Table 7]

[0153] Table 8 is a mapping table between the DMRS ports with transform precoder disabled, dmrs-Type=1, maxLength=1, and rank=4, and the multi-panel SRS resource set as default.

[0154] [Table 8]

[0155] Table 9 is a mapping table between DMRS ports with transform precoder disabled, dmrs-Type=1, maxLength=1, and rank=3, and SRS resource sets for single / multiple panel operation.

[0156] [Table 9]

[0157] Table 10 is a mapping table between DMRS ports with transform precoder disabled, dmrs-Type=1, maxLength=1, and rank=4, and SRS resource sets for single / multiple panel operation.

[0158] [Table 10]

[0159] Figure 22 is a schematic diagram illustrating the association of DMRS ports and CDM groups according to one exemplary embodiment of the present invention. Referring to Figure 22, antenna ports 1000 / 1001 / 1004 / 1005 correspond to a first SRS resource set, and antenna ports 1002 / 1003 / 1006 / 1007 correspond to a second SRS resource set. In two symbols DMRS and one PRB, the two DMRS ports are multiplexed in a code division manner.

[0160] Table 11 is a mapping table between DMRS ports with transform precoder disabled, dmrs-Type=1, maxLength=2, and rank=1, and SRS resource sets.

[0161] [Table 11]

[0162] Table 12 is a mapping table between DMRS ports and SRS resource sets with transform precoder disabled, dmrs-Type=1, maxLength=2, and rank=2.

[0163] [Table 12]

[0164] Table 13 is a mapping table between DMRS ports with transform precoder disabled, dmrs-Type=1, maxLength=2, and rank=3, and SRS resource sets.

[0165] [Table 13]

[0166] Table 14 is a mapping table between DMRS ports and SRS resource sets with transform precoder disabled, dmrs-Type=1, maxLength=2, and rank=4.

[0167] [Table 14]

[0168] In one embodiment, in the second scheme, the UE is indicated by the DCI to transmit one or more PUSCHs on a serving cell, and the DCI can dynamically indicate single-TRP or multi-TRP transmission for one or more PUSCHs. The UE can determine a spatial relationship of one or more PUSCHs based on two SRIs of the serving cell in the DCI. The two SRIs include a first SRI and a second SRI. The first SRI can be associated with a first SRS resource set indicated in the DCI. The second SRI can be associated with a second SRS resource set indicated in the DCI. Taking FIG. 19 as an example, SRI=“0” and SRI=“1” are configured in the DCI, and the PUSCH transmission is performed on the SRS resource corresponding to the SRI.

[0169] In one embodiment, in scheme 2, the UE is indicated by a DCI to transmit one or more PUSCHs on the serving cell, and the DCI can dynamically indicate single-TRP or multi-TRP transmission for the one or more PUSCHs. If no SRI is present in the DCI (e.g., there is no SRI), the UE can determine the spatial relationship of the one or more PUSCHs applied to the first SRS resource set based on a predetermined SRI (e.g., first) associated with the first SRS resource set and / or the spatial relationship of the PL-RS configured for the first SRS resource set.

[0170] In one embodiment, in scheme 2, the UE is indicated by a DCI to transmit one or more PUSCHs on the serving cell, and the DCI can dynamically indicate single-TRP or multi-TRP transmission for the one or more PUSCHs. If no SRI is present in the DCI (e.g., there is no SRI), the UE can determine the spatial relationship of the one or more PUSCHs applied to the second SRS resource set based on a predetermined SRI (e.g., second) associated with the second SRS resource set and / or the spatial relationship of the PL-RS configured for the second SRS resource set.

[0171] In one embodiment, in scheme 2, the UE is indicated by a DCI to transmit one or more PUSCHs on a serving cell, and the DCI can dynamically indicate single-TRP or multi-TRP transmission for the one or more PUSCHs. If no SRI is present in the DCI (e.g., there is no SRI), the UE can determine a spatial relationship of the one or more PUSCHs based on at least one of the following: an active PDSCH TCI state having an ID (e.g., the lowest ID) and two TCI states in the active DL BWP of the serving cell; For example, the first and second TCI states of the PDSCH TCI state ID correspond to the spatial relationship of the first and second SRS resource sets, respectively; Spatial configuration / relationship of PUCCH with ID (e.g., lowest ID); For example, the spatial configurations / relationships with relatively low or relatively high IDs configured for PUCCH correspond to the spatial relationships of the first and second SRS resource sets, respectively; QCL hypothesis or spatial relationship (e.g., of type D) of the CORESET with ID (e.g., lowest ID); For example, the first or second TCI state configured for CORESET corresponds to the spatial relationship of the first and second SRS resource sets, respectively. For example, the TCI state configured for a CORESET of a first CORESET pool index corresponds to the spatial relationship of the first SRS resource set, and the TCI state configured for a CORESET of a second CORESET pool index corresponds to the spatial relationship of the second SRS resource set.

[0172] In one embodiment, in scheme 2, the UE is indicated by a DCI to transmit one or more PUSCHs on a serving cell, and the DCI can dynamically indicate single-TRP or multi-TRP transmission for one or more PUSCHs. The UE can apply a sounding reference signal (SRS) resource indicator (SRI) to one or more physical uplink shared channel (PUSCH) repetitions or one or more PUSCHs based on one SRS resource set when multiple SRS resource sets are configured. That is, one SRS resource set is utilized to transmit one or more physical uplink shared channel (PUSCH) repetitions or to transmit one or more PUSCHs, i.e., single panel UL transmission. The SRI is given by a first DCI field including one SRS resource indicator, and the first DCI field is in the DCI. The UE can determine a spatial relationship of one or more PUSCHs applied to the first SRS resource set based on one SRI of the serving cell in the DCI associated with the first SRS resource set.

[0173] In one embodiment, in scheme 2, the UE is indicated by DCI to transmit one or more PUSCHs on the serving cell, and the DCI can dynamically indicate single TRP or multi-TRP transmission for one or more PUSCHs. The UE can apply SRI to one or more PUSCH repetitions or one or more PUSCHs based on one SRS resource set when two SRS resource sets are configured or when there is no SRS resource set indicator in the DCI. This is, for example, when the DCI does not carry an SRS resource set indicator or does not have a corresponding field of the SRS resource set indicator. Another example is when the DCI carries a corresponding field of the SRS resource set indicator but the field is set as zero, null, or invalid.

[0174] In one embodiment, in scheme 2, the UE is indicated by a DCI to transmit one or more PUSCHs on the serving cell, and the DCI may dynamically indicate single-TRP or multi-TRP transmission for the one or more PUSCHs. The UE may determine a spatial relationship of the one or more PUSCHs applied to the second SRS resource set based on at least one of the following: a given SRI (e.g., the first) associated with a second SRS resource set; spatial relationships of the PL-RS constructed for the second SRS resource set; an active PDSCH TCI state having an ID (e.g., the lowest ID) and having two TCI states in the active DL BWP of the serving cell; Spatial configuration / relationship of PUCCH with ID (e.g., lowest ID); A QCL hypothesis (e.g., of type D) or spatial relationship of the CORESET with an ID (e.g., the lowest ID).

[0175] FIG. 23 is a flow chart showing a processing method for multi-cell scheduling according to one exemplary embodiment of the present invention. Referring to FIG. 23, the method is suitable for a network device. The network device configures a DCI for scheduling a first number of scheduled cells (step S2310). The network device transmits the DCI to the UE via a first serving cell to perform multiple multi-cell communications on the scheduled cells (step S2320). The DCI includes one or more single DCI fields, one or more individual DCI fields, and one or more configurable DCI fields. The multi-cell communications is receiving a PDSCH or transmitting a PUSCH on multiple cells.

[0176] In one embodiment, the single DCI field corresponds to at least one of the first number of scheduled cells.

[0177] In one embodiment, the single DCI field includes at least one of the following: DCI format identifier; Co-scheduled cell indicator; BWP indicator for multiple scheduled cells supporting dynamic Bandwidth Part (BWP) switching; Downlink Allocation Index; Physical Uplink Control Channel (PUCCH) transmit power control (TPC) commands; PUCCH resource indicator; Physical downlink shared channel to hybrid automatic repeat request (PDSCH to HARQ) timing indicator; One-shot HARQ-ACK request; Beta offset indicator; Channel State Information (CSI) requests; and Time Domain Resource Allocation (TDRA).

[0178] In one embodiment, a separate DCI field corresponds to a second number of information blocks, each information block indicating control information for one of a plurality of scheduled cells.

[0179] In one embodiment, the second number of information blocks are arranged based on ascending order of serving cell index, with the first information block corresponding to the smallest serving cell index.

[0180] In one embodiment, the second number is equal to the first number.

[0181] In one embodiment, the control information corresponds to one of the following: New Data Indicator (NDI); Redundancy version(RV); Modulation and coding scheme (MCS); and Frequency Domain Resource Allocation (FDRA).

[0182] In one embodiment, the network device may configure each configurable DCI field corresponding to a first number of scheduled cells if the configurable DCI field is of a first type, and the network device configures each configurable DCI field to include a number of information blocks, each information block corresponding to the first number, if the configurable DCI field is of a second type. For example, the RRC signaling includes information indicating the type of the configurable DCI field.

[0183] In one embodiment, the configurable DCI fields include at least one of the following: Rate matching indicator; Zero Power (ZP) Channel State Information-Reference Signal (CSI-RS) triggering; Precoding information and number of layers; Phase Tracking Reference Signal-Demodulation Reference Signal (PTRS-DMRS) association; Antenna ports; Transmission Configuration Indicator (TCI); Sounding Reference Signal (SRS) requests; DMRS sequence initialization; SRS Resource Indicator (SRI); and Physical resource block (PRB) bundle size indicator.

[0184] In one embodiment, the network device may configure the lengths of the information blocks in the individual DCI fields or in the configurable DCI fields to be the same length and / or the network device may configure the lengths of the information blocks in the individual DCI fields or in the configurable DCI fields based on at least one higher layer signaling.

[0185] In one embodiment, the DCI is configured within a UE-specific search space (USS), and the length of the DCI is determined based on at least one higher layer configuration.

[0186] In one embodiment, the DCI is scrambled by a Cell Radio Network Temporary Identifier (C-RNTI), and the length of the DCI is not equal to the length of the first DCI having a different format scrambled by the C-RNTI.

[0187] In one embodiment, the network device may transmit a sounding reference signal (SRS) resource indicator (SRI), where the SRI is given by a first DCI field that includes one SRS resource indicator in the DCI.

[0188] In one embodiment, the SRS resource set indicator is not present in the DCI.

[0189] FIG. 24 is a block diagram illustrating a communication device according to one exemplary embodiment of the present invention. Referring to FIG. 24, the communication device 2400 may be a UE or a network device. The communication device 2400 may include a processor 2410, but the present invention is not limited thereto. The processor 2410 (e.g., having a processing circuit) may include an intelligent hardware device, such as a central processing unit (CPU), a microcontroller, an ASIC, etc. The processor 2410 may call and execute a computer program from a memory to implement a method in an embodiment of the present invention.

[0190] The program code stored in the communication device 2400, when executed by the processor 2410, adopts all the technical solutions of all the above-mentioned embodiments, and thus has at least all the advantageous effects brought about by all the technical solutions of all the above-mentioned embodiments, and further description is not incorporated in this specification.

[0191] Optionally, as shown in FIG. 24, the communication device 2400 may further include a memory 2420. The memory 2420 may include computer storage media in the form of volatile and / or non-volatile memory. The memory 2420 may be removable, non-removable, or a combination thereof. Exemplary memories include solid-state memory, hard drives, optical disk drives, and the like. The processor 2410 may call and execute computer programs from the memory 2420 to implement the methods in the embodiments of the present invention.

[0192] The memory 2420 may be a separate device separate from the processor 2410 or may be integrated within the processor 2410.

[0193] Optionally, as shown in FIG. 24, the communication device 2400 may further include a transceiver 2430, and the processor 2410 may control the transceiver 2430 to communicate with other devices. The transceiver 2430 having a transmitter (e.g., transmitting / transmission circuitry) and a receiver (e.g., receiving / reception circuitry) may be configured to transmit and / or receive time and / or frequency resource partitioning information. In some implementations, the transceiver 2430 may be configured to transmit in different types of subframes and slots, including (but not limited to) available, unavailable, and flexibly available subframe and slot formats. The transceiver 2430 may be configured to receive data and control channels.

[0194] In particular, the transceiver 2430 may transmit information or data to other devices or receive information or data transmitted by other devices.

[0195] Specifically, the transceiver 2430 may include a transmitter and a receiver. The transceiver 2430 may further include an antenna, the number of which may be one or more.

[0196] Optionally, the communication device 2400 may be a network device in one embodiment of the present invention, and the communication device 2400 may implement the corresponding processes implemented by the network device in various methods of the embodiment of the present invention. For the sake of brevity, the relevant description is omitted.

[0197] Optionally, the communication device 2400 may be a mobile terminal, a terminal device, or a UE in one embodiment of the present invention, and the communication device 2400 may implement the corresponding processes implemented by the mobile terminal, the terminal device, or the UE in various methods of the embodiment of the present invention. For the sake of brevity, the relevant description is omitted.

[0198] As described above, the multi-cell scheduling and UE processing method in the embodiment of the present invention defines a new type of DCI field that supports multi-panel operation for multi-cell scheduling.

[0199] It will be appreciated by those of ordinary skill in the art that various modifications and variations may be made to the disclosed embodiments without departing from the scope or spirit of the invention. In view of this, it is intended that the present invention cover modifications and variations that come within the scope of the following claims and their equivalents. [Industrial Applicability]

[0200] The multi-cell scheduling and UE processing method of the present invention can be applied to wireless communication technologies. [Explanation of symbols]

[0201] 1 Wireless Communication Network Architecture 2400 Communication Devices 2410 Processor 2420 Memory 2430 Transceiver Cell#0~Cell#6 Cell NN Network Node NW base station S710, S720, S730, S2310, S2320 Step TRP#1, TRP#2 sending and receiving points

Claims

1. A method for handling multi-cell scheduling used by a user equipment (UE), comprising: receiving downlink control information (DCI) from a first serving cell; determining a first number of a plurality of scheduled cells based on the DCI, the DCI configured to schedule at least one communication on the plurality of scheduled cells; performing the at least one communication to at least one of the first number of the plurality of scheduled cells based on the DCI; applying a sounding reference signal (SRS) resource indicator (SRI) to at least one physical uplink shared channel (PUSCH) repetition or at least one PUSCH based on a first one of the plurality of SRS resource sets when a plurality of SRS resource sets are configured; the DCI includes at least one single DCI field, at least one individual DCI field, and at least one configurable DCI field; The SRI is given by a first DCI field including one SRS resource indicator within the DCI.

2. The method of claim 1 , wherein the single DCI field corresponds to the at least one of the first number of the plurality of scheduled cells.

3. The single DCI field: a DCI format identifier; An indicator of a co-scheduled cell; a bandwidth part (BWP) indicator of the plurality of scheduled cells supporting dynamic BWP switching; A downlink allocation index; and physical uplink control channel (PUCCH) transmission power control (TPC) commands; A PUCCH resource indicator; and a physical downlink shared channel-to-hybrid automatic repeat request (PDSCH-to-HARQ) timing indicator; A one-shot HARQ-ACK request; and A beta offset indicator; A channel state information (CSI) request; Time domain resource allocation (TDRA) and The method of claim 2 , comprising at least one of:

4. 2. The method of claim 1, wherein the individual DCI fields correspond to a second number of information blocks, each of the information blocks indicating control information for one of the plurality of scheduled cells.

5. The second number of information blocks are arranged based on an ascending order of serving cell index, with a first information block corresponding to a smallest serving cell index; The method of claim 4 , wherein the second number is equal to the first number.

6. The control information is New Data Indicator (NDI) and Redundancy version (RV) and Modulation coding scheme (MCS); Frequency domain resource assignment (FDRA); The method according to claim 4, which corresponds to one of:

7. determining one of the at least one configurable DCI field corresponding to the first number of the scheduled cells if the configurable DCI field is of a first type; if the configurable DCI field is of a second type, determining one of the at least one configurable DCI field to include a plurality of information blocks, each of the information blocks corresponding to one of a subgroup or the first number of the plurality of scheduled cells; The method of claim 1 further comprising:

8. The configurable DCI field is A rate matching indicator; A zero power (ZP) channel state information-reference signal (CSI-RS) trigger; Precoding information and the number of layers, Phase-tracking reference signal-demodulation reference signal (PTRS-DMRS) related; An antenna port; A transmission configuration indicator (TCI); A sounding reference signal (SRS) request; and Initializing a DMRS sequence; SRS resource indicator (SRI); a physical resource block (PRB) bundle size indicator; and The method of claim 7, comprising at least one of:

9. 2. The method of claim 1, further comprising applying one of the configurable DCI fields to the multiple scheduled cells if type information is not present in one of the configurable DCI fields, the type information indicating one of the configurable DCI fields as one of the single DCI fields or one of the individual DCI fields.

10. 2. The method of claim 1, further comprising determining, if type information is not present in one of the configurable DCI fields, one of the configurable DCI fields that corresponds to a second number of information blocks, wherein the type information indicates one of the configurable DCI fields as one of the single DCI fields or one of the individual DCI fields.

11. determining the length of the information blocks in the individual DCI fields or in the configurable DCI field to be the same length; or determining a length of an information block in the individual DCI field or in the configurable DCI field based on at least one higher layer signaling; The method of any one of claims 1 to 10, further comprising:

12. The method according to any one of claims 1 to 10, further comprising not performing one of the at least one communication for one of the plurality of scheduled cells if control information of one of the plurality of scheduled cells is not present in the DCI.

13. The method according to any one of claims 1 to 10, further comprising applying a default value of one of the scheduled cells when the DCI does not carry control information corresponding to the scheduled cells.

14. 11. The method of claim 1, further comprising: applying a quasi co-location (QCL) assumption for the physical downlink shared channel (PDSCH) in the multiple communications based on a TCI state having a lowest identification (ID) applicable for the PDSCH when no transmission configuration indicator (TCI) state is present in the DCI.

15. determining the first number of the plurality of scheduled cells based on the DCI, further comprising:

11. The method of claim 1, comprising determining the first number of the plurality of scheduled cells from a third number of the plurality of scheduled cells, the first number being smaller than or equal to the third number, the maximum of the third number of serving cells being 4, and / or the minimum of the first number of serving cells being 1.

16. 11. The method according to claim 1, wherein the DCI is configured in a UE-specific search space (USS) and a length of the DCI is determined based on at least one higher layer configuration.

17. 11. The method according to claim 1, wherein the DCI is scrambled by a cell-radio network temporary identity (C-RNTI), and the length of the DCI is not equal to the length of a first DCI having a different format scrambled by the C-RNTI.

18. The method of claim 11, wherein there is no SRS resource set indicator in the DCI.

19. determining, when a plurality of SRS resource sets are configured, a first relationship between at least one of the plurality of SRS resource sets and at least one physical uplink shared channel (PUSCH) repetition or a second relationship between at least one of the plurality of SRS resource sets and at least one PUSCH based on an SRS resource set indicator in the DCI; transmitting the at least one PUSCH repetition based on the first relationship between the at least one of a plurality of SRS resource sets and the at least one PUSCH repetition, or transmitting the at least one PUSCH based on the second relationship between the at least one of the plurality of SRS resource sets and the at least one PUSCH; The method of any one of claims 1 to 10, further comprising:

20. Determining the second relationship between the at least one of the plurality of SRS resource sets and the at least one PUSCH further comprises: If there is no sounding reference signal (SRS) resource indicator (SRI) in the DCI, a predetermined SRI associated with one of the plurality of SRS resource sets; A pathloss reference signal (PL-RS) configured for one of the plurality of SRS resource sets; and a transmission configuration indicator (TCI) state having a physical downlink shared channel (PDSCH) identity (ID); A physical uplink control channel (PUCCH) ID; and A quasi-collocation (QCL) assumption or a control resource set (CORESET) value; 20. The method of claim 19, further comprising determining a spatial relationship of the at least one PUSCH based on any one of:

21. Determining the second relationship between the at least one of the plurality of SRS resource sets and the at least one PUSCH further comprises:

20. The method of claim 19, comprising determining a spatial relationship of the at least one PUSCH based on at least one SRI field in the DCI.

22. 20. The method of claim 19, further comprising determining a spatial relationship of the at least one PUSCH based on at least one demodulation reference signal (DMRS) port indicated by an antenna port field in the DCI.

23. If there is no sounding reference signal (SRS) resource indicator (SRI) in the DCI, a spatial relationship of the reference cell or the co-scheduled serving cell; A path loss reference signal (PL-RS) configured for an SRS resource set; and A predefined SRI associated with the SRS resource set; and a transmission configuration indicator (TCI) state having a physical downlink shared channel (PDSCH) identity (ID); A physical uplink control channel (PUCCH) ID; and The quasi-collocation (QCL) assumption; The ID of the control resource set (CORESET); and The method of any one of claims 1 to 10, comprising determining a spatial relationship of the at least one PUSCH based on any of the following:

24. a transceiver used to transmit or receive signals; A memory used to store program code; a transceiver coupled to the memory; receiving downlink control information (DCI) from a first serving cell via the transceiver; determining a first number of a plurality of scheduled cells based on the DCI, the DCI configured to schedule at least one communication on the plurality of scheduled cells; performing the at least one communication to at least one of the first number of the plurality of scheduled cells based on the DCI; applying a sounding reference signal (SRS) resource indicator (SRI) to at least one physical uplink shared channel (PUSCH) repetition or at least one PUSCH based on a first one of the plurality of SRS resource sets when a plurality of SRS resource sets are configured; a processor configured to execute the program code to wherein the DCI includes at least one single DCI field, at least one individual DCI field, and at least one configurable DCI field; A user equipment (UE) where the SRI is given by a first DCI field including one SRS resource indicator within the DCI.

25. 25. The UE of claim 24, wherein the single DCI field corresponds to the at least one of the first number of the scheduled cells.

26. The at least one single DCI field: a DCI format identifier; An indicator of a co-scheduled cell; a bandwidth portion (BWP) indicator for a plurality of scheduled cells supporting dynamic BWP switching; A downlink allocation index; and A physical uplink control channel (PUCCH) transmit power control (TPC) command; A PUCCH resource indicator; and a physical downlink shared channel to hybrid automatic repeat request (PDSCH to HARQ) timing indicator; A one-shot HARQ-ACK request; and A beta offset indicator; A channel state information (CSI) request; and Time Domain Resource Allocation (TDRA); 26. The UE of claim 25, comprising at least one of:

27. 25. The UE of claim 24, wherein the individual DCI field corresponds to a second number of information blocks, each of the information blocks indicating control information for one of the plurality of scheduled cells.

28. The second number of information blocks are arranged based on an ascending order of serving cell index, with a first information block corresponding to a smallest serving cell index; 28. The UE of claim 27, wherein the second number is equal to the first number.

29. The control information is New Data Indicator (NDI); A redundancy version (RV); A modulation and coding scheme (MCS); Frequency Domain Resource Allocation (FDRA); 28. The UE of claim 27, corresponding to one of:

30. The processor further comprises: determining, if the configurable DCI field is of a first type, each of the at least one configurable DCI field corresponding to the first number of the scheduled cells; determining, if the configurable DCI field is of a second type, each of the at least one configurable DCI field including a plurality of information blocks, each of the information blocks corresponding to one of a subgroup or the first number of the plurality of scheduled cells; The UE of claim 24 configured to:

31. The configurable DCI field is A rate matching indicator; Zero power (ZP) channel state information-reference signal (CSI-RS) trigger; Precoding information and number of layers, A phase tracking reference signal-demodulation reference signal (PTRS-DMRS) association; An antenna port; A transmission configuration indicator (TCI); and A sounding reference signal (SRS) request; Initializing a DMRS sequence; an SRS resource indicator (SRI); and a physical resource block (PRB) bundle size indicator; and 31. The UE of claim 30, comprising at least one of:

32. The processor further comprises:

25. The UE of claim 24, configured to apply the configurable DCI fields to the multiple scheduled cells when type information is not present in the configurable DCI fields, the type information indicating one of the configurable DCI fields as one of the single DCI fields or one of the individual DCI fields.

33. The processor further comprises:

25. The UE of claim 24, configured to determine one of the configurable DCI fields corresponding to a second number of information blocks when type information is not present in the configurable DCI fields, the type information indicating one of the configurable DCI fields as one of the single DCI fields or one of the individual DCI fields.

34. The processor further comprises: determining the length of the information blocks in the individual DCI fields or in the configurable DCI field to be the same length; or determining a length of an information block in the individual DCI field or in the configurable DCI field based on at least one higher layer signaling; The UE according to any one of claims 24 to 33, configured to:

35. The processor further comprises: A UE as claimed in any one of claims 24 to 33, configured not to perform one of the at least one communications with one of the plurality of scheduled cells when control information of one of the plurality of scheduled cells is not present in the DCI.

36. The processor further comprises: The UE according to any one of claims 24 to 33, configured to apply a default value of one of the scheduled cells when the DCI does not carry control information corresponding to the scheduled cells.

37. The processor further comprises:

34. The UE of claim 24, configured to apply a quasi-co-location (QCL) assumption for a physical downlink shared channel (PDSCH) in the plurality of communications based on a TCI state having a lowest identification (ID) applicable to the PDSCH when no TCI state is present in the DCI.

38. The processor further comprises:

34. The UE of claim 24, configured to determine the first number of the scheduled cells from a third number of the scheduled cells, the first number being smaller than or equal to the third number, a maximum number of serving cells of the third number being 4, and / or a minimum number of serving cells of the first number being 1.

39. The UE of any one of claims 24 to 33, wherein the DCI is configured within a UE Specific Search Space (USS), and the length of the DCI is determined based on at least one higher layer configuration.

40. The UE of any one of claims 24 to 33, wherein the DCI is scrambled by a Cell Radio Network Temporary Identifier (C-RNTI), and the length of the DCI is not equal to the length of a first DCI having a different format scrambled by the C-RNTI.

41. The UE of claim 24, wherein no SRS resource set indicator is present in the DCI.

42. The processor further comprises: determining, when a plurality of SRS resource sets are configured, a first relationship between at least one of a plurality of SRS resource sets and at least one physical uplink shared channel (PUSCH) repetition or a second relationship between the at least one of the plurality of SRS resource sets and at least one PUSCH based on an SRS resource set indicator in the DCI; transmitting, via the transceiver, the at least one PUSCH repetition based on the first relationship between the at least one of a plurality of SRS resource sets and the at least one PUSCH repetition, or transmitting the at least one PUSCH based on the second relationship between the at least one of the plurality of SRS resource sets and the at least one PUSCH; The UE according to any one of claims 24 to 33, configured to:

43. The processor further comprises: If there is no sounding reference signal (SRS) resource indicator (SRI) in the DCI, a predetermined SRI associated with one of the plurality of SRS resource sets; A path loss reference signal (PL-RS) configured for one of the plurality of SRS resource sets; and a transmission configuration indicator (TCI) state having a physical downlink shared channel (PDSCH) identity (ID); A physical uplink control channel (PUCCH) ID; and A quasi-collocation (QCL) assumption or a value of a control resource set (CORESET); 43. The UE of claim 42, configured to determine a spatial relationship of the at least one PUSCH based on one of:

44. The processor further comprises:

43. The UE of claim 42, configured to determine a spatial relationship of the at least one PUSCH based on at least one SRI field in the DCI.

45. The processor further comprises:

43. The UE of claim 42, configured to determine a spatial relationship of the at least one PUSCH based on at least one demodulation reference signal (DMRS) port indicated by an antenna port field in the DCI.

46. The processor further comprises: If there is no sounding reference signal (SRS) resource indicator (SRI) in the DCI, a spatial relationship of the reference cell or the co-scheduled serving cell; A path loss reference signal (PL-RS) configured for an SRS resource set; and A predefined SRI associated with the SRS resource set; and a transmission configuration indicator (TCI) state having a physical downlink shared channel (PDSCH) identity (ID); A physical uplink control channel (PUCCH) ID; and The quasi-collocation (QCL) assumption; The ID of the control resource set (CORESET); and The UE of any one of claims 24 to 33, configured to determine a spatial relationship of at least one PUSCH based on one of the following:

47. A method for handling multi-cell scheduling used by a network device, comprising: configuring downlink control information (DCI) scheduling a first number of a plurality of scheduled cells; transmitting the DCI to a user equipment (UE) via a first serving cell and conducting a plurality of communications on the plurality of scheduled cells; Transmitting a sounding reference signal (SRS) resource indicator (SRI); wherein the DCI includes at least one single DCI field, at least one individual DCI field, and at least one configurable DCI field; The SRI is given by a first DCI field including one SRS resource indicator within a DCI.

48. 48. The method of claim 47, wherein the single DCI field corresponds to the at least one of the first number of the scheduled cells.

49. The single DCI field: a DCI format identifier; A co-scheduled cell indicator; a BWP indicator of the plurality of scheduled cells supporting dynamic BWP switching; A downlink allocation index; and A physical uplink control channel (PUCCH) transmit power control (TPC) command; A PUCCH resource indicator; and a physical downlink shared channel to hybrid automatic repeat request (PDSCH to HARQ) timing indicator; A one-shot HARQ-ACK request; and A beta offset indicator; A channel state information (CSI) request; and Time Domain Resource Allocation (TDRA); and 49. The method of claim 48, comprising at least one of:

50. 48. The method of claim 47, wherein the individual DCI field corresponds to a second number of information blocks, each of the information blocks indicating control information for one of the plurality of scheduled cells.

51. The second number of information blocks are arranged based on an ascending order of serving cell index, with a first information block corresponding to a smallest serving cell index; 51. The method of claim 50, wherein the second number is equal to the first number.

52. The control information is New Data Indicator (NDI); A redundancy version (RV); A modulation and coding scheme (MCS); Frequency Domain Resource Allocation (FDRA); 51. The method of claim 50, which corresponds to one of:

53. configuring each of the at least one configurable DCI field corresponding to the first number of scheduled cells if the configurable DCI field is of a first type; configuring each of the at least one configurable DCI field to include a plurality of information blocks if the configurable DCI field is of a second type, each of the information blocks corresponding to the first number; 48. The method of claim 47, further comprising:

54. The configurable DCI field is A rate matching indicator; Zero power (ZP) channel state information-reference signal (CSI-RS) trigger; Precoding information and number of layers, A phase tracking reference signal-demodulation reference signal (PTRS-DMRS) association; An antenna port; A transmission configuration indicator (TCI); and A sounding reference signal (SRS) request; Initializing a DMRS sequence; an SRS resource indicator (SRI); and a physical resource block (PRB) bundle size indicator; and 54. The method of claim 53, comprising at least one of:

55. configuring the lengths of the information blocks in the individual DCI fields or in the configurable DCI fields to be the same length; or - configuring a length of an information block in the individual DCI field or in the configurable DCI field based on at least one higher layer signaling; The method of any one of claims 47 to 54, further comprising:

56. A method according to any one of claims 47 to 54, wherein the DCI is configured within a UE Specific Search Space (USS) and the length of the DCI is determined based on at least one higher layer configuration.

57. 55. A method according to any one of claims 47 to 54, wherein the DCI is scrambled by a Cell Radio Network Temporary Identifier (C-RNTI), and the length of the DCI is not equal to the length of a first DCI having a different format scrambled by the C-RNTI.

58. 48. The method of claim 47, wherein there is no SRS resource set indicator in the DCI.

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