Method, apparatus and system for resource determination mechanism with multi-cell DCI

Abstract

The present disclosure describes methods, systems, and devices for a resource determination mechanism with multi-cell scheduled downlink control information (MC-DCI). A method includes receiving a configuration including values of a first group of cells, a first User Specific Search Space (USS) for a Multi-cell Scheduling Downlink Control Information (MC-DCI) on a scheduling cell, a second USS on a scheduled cell associated with the first USS; and determining resources of the first USS and the second USS on the scheduling cell.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications and, more particularly, to methods, devices, and systems for a resource determination mechanism with Multi-Cell Scheduling Downlink Control Information (MC-DCI). Background Art

[0002] Wireless communication technologies are driving the world toward an increasingly interconnected and networked society. High-speed and low-latency wireless communications rely on efficient network resource management and allocation between user devices and radio access network nodes (including but not limited to base stations). Next-generation networks are expected to provide high-speed, low-latency, and ultra-reliable communication capabilities to meet the needs of diverse industries and users.

[0003] Carrier aggregation (CA) is used in the fourth generation communication system (the 4 th Generation, 4G) and the fifth generation communication system (the 5 th The present invention aims to improve the performance of wireless communication systems in 5G (5th Generation) and subsequent updated communication systems. CA can increase the data rate of each user equipment (UE) by allocating multiple component carriers in the frequency domain to the same user equipment (UE). In some embodiments using CA, the scheduling mechanism may only allow the scheduling of a single cell physical uplink shared channel (PUSCH) and / or physical downlink shared channel (PDSCH) according to each scheduling downlink control information (DCI). As more dispersed spectrum bands become available, the demand for simultaneous scheduling of multiple cells is expected to increase. In order to reduce control overhead, it is beneficial to extend from single-cell scheduling to multi-cell PUSCH / PDSCH scheduling using a single scheduling DCI. Some solutions are accompanied by various problems / difficulties. For example, when the scheduling cell and a scheduled cell are both configured with a user specific search space (USS) of DCI format 0_X / 1_X, how to derive the USS of DCI format 0_X / 1_X based on the n_CI of the group of cells. For another example, how to calculate the number of candidates for the reference cell (ie, how to count the candidates for the reference cell).

[0004] The present disclosure describes various embodiments of a resource determination mechanism with multi-cell scheduling downlink control information (MC-DCI), which solves at least one of the problems discussed in the present disclosure. Summary of the Invention

[0005] This document relates to methods, systems, and devices for wireless communications, and more specifically, to methods, systems, and devices for a resource determination mechanism with Multi-Cell Scheduling Downlink Control Information (MC-DCI).

[0006] In one embodiment, the present disclosure describes a method for wireless communication. The method may be performed by a wireless communication device (e.g., user equipment). The method includes receiving a configuration including a value of a first group of cells, a first USS of MC-DCI on a scheduling cell, and a second USS on a scheduled cell associated with the first USS; and determining resources of the first USS and the second USS on the scheduling cell.

[0007] In one embodiment, the present disclosure describes another method for wireless communication. The method may be performed by a wireless communication node (e.g., a base station or a radio access network (RAN)). The method includes sending a configuration including a value of a first group of cells, a first USS of MC-DCI on a scheduling cell, and a second USS on a scheduled cell associated with the first USS, such that, in response to receiving the configuration, the wireless communication device is configured to determine resources of the first USS and the second USS on the scheduling cell.

[0008] In one embodiment, the present disclosure describes another method for wireless communication. The method can be performed by a wireless communication device (e.g., a user equipment). The method includes: receiving a configuration of a search space for MC-DCI for at least one group of cells, wherein: the at least one group of cells is configured for multi-cell scheduling, and at least one cell in the at least one group of cells is scheduled by MC-DCI on a physical downlink control channel (PDCCH) candidate on the scheduling cell; and in response to the MC-DCI including a specific field, applying a set of specific functions based on the specific field.

[0009] In one embodiment, the present disclosure describes another method for wireless communication. The method may be performed by a wireless communication node (e.g., a base station or a RAN). The method includes: transmitting a configuration of a search space for MC-DCI for at least one group of cells, wherein: the at least one group of cells is configured for multi-cell scheduling; scheduling at least one cell in the at least one group of cells by MC-DCI on a PDCCH candidate on the scheduling cell; and a wireless communication device, upon receiving the configuration and in response to the MC-DCI including a specific field, being configured to apply a set of specific functions based on the specific field.

[0010] In some other embodiments, an apparatus for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to perform the above method.

[0011] In some other embodiments, a device for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to perform the above method.

[0012] In some other embodiments, a computer-readable medium includes instructions that, when executed by a computer, cause the computer to perform the above method.

[0013] These and other aspects and embodiments thereof are described in more detail in the drawings, the description, and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1A An example of a wireless communication system including one radio network node and one or more UEs is shown.

[0015] Figure 1B A schematic diagram illustrating an exemplary embodiment of wireless communication is shown.

[0016] Figure 2 An example of a network node is shown.

[0017] Figure 3 An example of a user device is shown.

[0018] Figure 4A A flow chart of a wireless communication method is shown.

[0019] Figure 4B A flow chart of another wireless communication method is shown.

[0020] Figure 4C A flow chart of a wireless communication method is shown.

[0021] Figure 4D A flow chart of another wireless communication method is shown.

[0022] Figure 5A A schematic diagram illustrating an exemplary embodiment of wireless communication is shown.

[0023] Figure 5B A schematic diagram illustrating another exemplary embodiment of wireless communication is shown.

[0024] Figure 6 A schematic diagram illustrating another exemplary embodiment of wireless communication is shown.

[0025] Figure 7 A schematic diagram illustrating another exemplary embodiment of wireless communication is shown. DETAILED DESCRIPTION

[0026] The present disclosure will now be described in detail hereinafter with reference to the accompanying drawings, which form a part hereof and show by way of illustration specific examples of embodiments. However, it should be noted that the present disclosure may be embodied in various different forms, and thus, the subject matter covered or claimed is intended to be construed as not limited to any of the embodiments set forth below.

[0027] Throughout the specification and claims, in addition to the meanings explicitly stated, terms may have subtly different meanings that are implied or suggested in the context. Similarly, the phrases "in one embodiment" or "in some embodiments" as used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" as used herein do not necessarily refer to different embodiments. The phrases "in one embodiment" or "in some embodiments" as used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" as used herein do not necessarily refer to different embodiments. For example, the claimed subject matter is intended to include, in whole or in part, exemplary embodiments or combinations of embodiments.

[0028] In general, terms can be understood at least in part from their use in the context. For example, terms used herein, such as "and," "or," and "and / or," can include multiple meanings that can depend at least in part on the context in which the terms are used. Typically, "or," if used in connection with a list, e.g., A, B, or C, is intended to mean A, B, and C, used herein in an inclusive sense, and A, B, or C, used herein in an exclusive sense. Furthermore, the terms "one or more" or "at least one," as used herein, can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can likewise be understood to convey singular usage or to convey plural usage, depending at least in part on the context. Furthermore, the terms "based on" or "determined by..." can be understood to not necessarily be intended to convey a set of exclusive factors, but can allow for the presence of additional factors that are not necessarily explicitly described, again, depending at least in part on the context.

[0029] This disclosure describes methods and apparatus for a resource determination mechanism with MC-DCI.

[0030] Next-generation (NG) mobile communication systems are driving the world toward an increasingly interconnected and networked society. High-speed and low-latency wireless communications rely on efficient network resource management and allocation between user devices and radio access network nodes (including but not limited to wireless base stations). NG networks are expected to provide high-speed, low-latency, and ultra-reliable communication capabilities to meet the needs of diverse industries and users.

[0031] 4G LTE or LTE-Advance (LTE-A) and 5G mobile communication technologies are facing increasing demands. Based on current development trends, 4G and 5G systems are developing support for enhanced Mobile Broadband (eMBB), Ultra-Reliable Low-Latency Communication (URLLC), and massive Machine-Type Communication (mMTC).

[0032] Carrier aggregation (CA) is used to improve the performance of wireless communication systems in 4G and 5G and further communication systems. CA can increase the data rate of each UE by allocating multiple component carriers in the frequency domain to the same UE. In some embodiments using CA, the scheduling mechanism may only allow scheduling of a single cell PUSCH and / or PDSCH based on the scheduling DCI. With more available scattered spectrum bands, the demand for simultaneous scheduling of multiple cells is expected to increase. In order to reduce control overhead, it is beneficial to extend from single-cell scheduling to multi-cell PUSCH / PDSCH scheduling using a single scheduling DCI.

[0033] When multi-cell scheduling with a single scheduling DCI format (e.g., format 0_X and / or 1_X) is introduced for a group of cells, the DCI size of DCI format 0_X / 1_X is counted on one cell in the group of cells, and the blind decode and / or control channel element (BD / CCE) of DCI format 0_X / 1_X is counted on one cell in the group of cells. The search space (SS) of DCI format 0_X / 1_X is configured on one cell in the group of cells and is associated with the search space of the scheduling cell with the same search space identifier (ID). In order to monitor PDCCH candidates for a group of cells configured for multi-cell scheduling, the n_CI value in the search space equation is determined by the value configured for the group of cells. Some solutions have various problems. For example, when both the scheduling cell and a scheduled cell are configured with USS of DCI format 0_X / 1_X, how to derive the USS of DCI format 0_X / 1_X based on n_CI of a group of cells; for another example, how to count the candidates of the reference cell.

[0034] Various embodiments and implementations described in this disclosure include methods and apparatus for a resource determination mechanism with MC-DCI, which solve at least one of the problems discussed in this disclosure.

[0035] Figure 1AA wireless communication system 100 is shown that includes a radio network node 118 and one or more UEs 110. The radio network node may include a network base station, which may be a NodeB (NB, such as a gNB) in a mobile telecommunications environment. Each UE may wirelessly communicate with the radio network node via one or more radio channels 115 for downlink / uplink communication. For example, a first UE 110 may wirelessly communicate with the radio network node 118 via a channel including multiple radio channels during a specific time period. The network base station 118 may send higher-layer signaling to the UE 110. The higher-layer signaling may include configuration information for communication between the UE and the base station. In one embodiment, the higher-layer signaling may include Radio Resource Control (RRC) messages.

[0036] Figure 2 An example of an electronic device 200 implementing a network base station is shown. Optionally, in one embodiment, the example electronic device 200 may include wireless transmit / receive (Tx / Rx) circuitry 208 to send / receive communications with a UE and / or other base stations. The electronic device 200 may also include network interface circuitry 209 to connect the base station to other base stations and / or a core network, such as optical or wired interconnects, Ethernet, and / or other data transmission media / protocols. The electronic device 200 may optionally include an input / output (I / O) interface 206 to communicate with an operator or the like.

[0037] The electronic device 200 may also include system circuitry 204. The system circuitry 204 may include a processor 221 and / or a memory 222. The memory 222 may include an operating system 224, instructions 226, and parameters 228. The instructions 226 may configure one or more processors 124 to perform the functions of a network node. The parameters 228 may include parameters that support the execution of the instructions 226. For example, the parameters may include network protocol settings, bandwidth parameters, radio frequency mapping assignments, and / or other parameters.

[0038] Figure 3An example of an electronic device (e.g., UE) that implements a terminal device 300 is shown. UE 300 may be a mobile device, such as a smartphone or a mobile communication module provided in a vehicle. UE 300 may include a communication interface 302, a system circuit 304, an I / O interface 306, a display circuit 308, and a memory 309. The display circuit may include a user interface 310. System circuit 304 may include any combination of hardware, software, firmware, or other logic / circuits. System circuit 304 may be implemented, for example, using one or more systems on chips (SoCs), application-specific integrated circuits (ASICs), discrete analog and digital circuits, and other circuits. System circuit 304 may be part of the implementation of any desired functionality in UE 300. In this regard, the system circuitry 304 may include logic to facilitate, for example, decoding and playing music and videos, such as MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback; running applications; accepting user input; saving and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections, as an example, for Internet connections; establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on the user interface 310. The user interface 310 and the I / O interface 306 may include a graphical user interface, a touch-sensitive display, tactile feedback or other tactile output, voice or facial recognition input, buttons, switches, speakers, and other user interface elements. Additional examples of the I / O interface 306 may include a microphone, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headphone and microphone input / output jacks, Universal Serial Bus (USB) connectors, memory card slots, radiation sensors (e.g., infrared (IR) sensors), and other types of inputs.

[0039] refer to Figure 3, the communication interface 302 may include radio frequency (RF) transmit (Tx) and receive (Rx) circuitry 316 that handles the transmission and reception of signals through one or more antennas 314. The communication interface 302 may include one or more transceivers. The transceiver may be a wireless transceiver that includes modulation / demodulation circuitry, a digital to analog converter (DAC), a shaping table, an analog to digital converter (ADC), filters, waveform shapers, filters, pre-amplifiers, power amplifiers, and / or other logic for transmission and reception through one or more antennas or (for some devices) through a physical (e.g., wired) medium. The transmitted and received signals may conform to any one of a different array of formats, protocols, modulations (e.g., QPSK, 16-QAM, 64-QAM, or 256-QAM), frequency channels, bit rates, and encodings. As a specific example, the communication interface 302 may include a transceiver that supports transmission and reception under 2G, 3G, BT, WiFi, Universal Mobile Telecommunications System (UMTS), High Speed ​​Packet Access (HSPA)+, 4G / LTE, 5G standards, and / or 6G standards. However, the techniques described below are applicable to other wireless communication technologies, whether derived from the 3rd Generation Partnership Project (3GPP), the GSM Association, 3GPP2, IEEE, or other partners or standards bodies.

[0040] refer to Figure 3 , the system circuitry 304 may include one or more processors 321 and memory 322. The memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328. The processor 321 is configured to execute the instructions 326 to perform the desired functions for the UE 300. The parameters 328 may provide and specify configuration and operating options for the instructions 326. The memory 322 may also store any BT, WiFi, 3G, 4G, 5G, 6G, or other data that the UE 300 will transmit or has received via the communication interface 302. In various embodiments, the system power for the UE 300 may be provided by a power storage device such as a battery or a transformer.

[0041] This disclosure describes various embodiments of a resource determination mechanism with MC-DCI, which may be implemented partially or fully in Figure 2 and Figure 3Various embodiments of the present disclosure can achieve efficient wireless transmission in a telecommunications system, which can increase resource utilization efficiency and / or improve the delay performance of URLLC services.

[0042] In some multi-cell scheduling implementations, under normal circumstances, a scheduled cell may be configured with only one scheduling cell. Figure 1B Multi-cell scheduling is shown, where the first cell (cell 1, 151) can be a scheduling cell, the second cell (cell 2, 152) can be a scheduled cell, the third cell (cell 3, 153) can be another scheduled cell, and the fourth cell (cell 4, 154) can be another scheduled cell. The scheduled cell can be configured with only one scheduling cell and a single MC-DCI, which can be DCI format 0_X / 1_X and carried by PDCCH, which can be used to schedule multiple PxSCHs on multiple cells, each PxSCH on one cell. The term "PxSCH" can be used to refer to PDSCH or PUSCH. In some embodiments, PDCCH can be called a control channel and PxSCH can be called a data channel.

[0043] like Figure 1B As shown, the scheduled cell has only one scheduling cell, and the scheduling cell of the scheduled cell can support MC-DCI and / or single cell scheduling DCI (SC-DCI), which is a traditional DCI format (e.g., DCI format 0_1 / 1_1). MC-DCI may be a new DCI format 0_X / 1_X.

[0044] In some embodiments, for example, under normal circumstances, the DCI size and / or blind decode / control channel element (BD / CCE) of the PDCCH carrying MC-DCI is counted on one cell in a group of cells. In some embodiments, the BD corresponds to the maximum number of monitored PDCCH candidates per slot / span of the downlink (DL) bandwidth part (BWP) with a subcarrier spacing (SCS) configuration μ∈{0,1,2,3} of a single serving cell. CCE corresponds to the maximum number of non-overlapping CCEs per slot / span for a DL BWP with SCS configuration μ∈{0,1,2,3} of a single serving cell

[0045] In some implementations, there may be at least two conditions for multi-cell scheduling.

[0046] One condition: for a group of cells configured for multi-cell scheduling, the existing DCI size budget is maintained on each cell in the group of cells; the DCI size of DCI format 0_X / 1_X is counted on one cell in the group of cells (for example, the DCI size of DCI format 0_X / 1_X is counted on the reference cell); the BD / CCE of DCI format 0_X / 1_X is counted on one cell in the group of cells (for example, the BD / CCE of DCI format 0_X / 1_X is counted on the reference cell); DCI format 0_X and DCI format 1_X use the same reference cell.

[0047] The condition may also include, for a group of cells configured for multi-cell scheduling, when the scheduling cell is included in the group of cells and the search space of DCI format 0_X / 1_X is configured only on the scheduling cell, the reference cell is: the scheduling cell; when the search space of DCI format 0_X / 1_X is configured on a cell other than the scheduling cell, one of the group of cells on which the search space of DCI format 0_X / 1_X is configured and associated with the search space of the scheduling cell with the same search space ID, for example, on which cell the SS of DCI format 0_X / 1_X is configured depends on the gNB.

[0048] The conditions may also include: for a group of cells configured for multi-cell scheduling, resolving the BD / CCE limitations of any given cell: for the reference cell, the total number of BD / CCEs configured for DCI format 0_X / 1_X and legacy DCI format (if configured) does not exceed a predefined limit; for other cells in the groups of cells, one or more predefined limitations on PDCCH / DCI monitoring and BD / CCE counting rules for legacy DCI formats (excluding DCI format 0_X / 1_X) apply.

[0049] Another condition: To monitor PDCCH candidates of a group of cells configured for multi-cell scheduling, the n_CI in the search space equation is determined by the value configured for the group of cells by RRC signaling.

[0050] In some embodiments, the maximum number of monitored PDCCH candidates per time slot for a DL BWP with SCS configuration μ∈{0,1,2,3} for a single serving cell is As shown in Table 1, where μ∈{0,1,2,3} corresponds to 15 kHz, 30 kHz, 60 kHz, and 120 kHz, respectively. In some embodiments, the maximum number of non-overlapping CCEs per slot / span for a DL BWP with SCS configuration μ∈{0,1,2,3} for a single serving cell is As shown in Table 2.

[0051] Table 1: Maximum number of monitored PDCCH candidates (or BDs)

[0052]

[0053] Table 2: Maximum number of non-overlapping CCEs

[0054]

[0055] In some embodiments, when the UE is configured with downlink cells whose DL BWP has an SCS configuration μ, where When the DL BWP of the activated cell is the active DL BWP of the activated cell, the DL BWP of the deactivated cell is the DL BWP with the index provided by the firstActiveDownlinkBWP-Id of the deactivated cell, and the UE is not required to Active DL BWPs of downlink cells monitor more than PDCCH candidates or more non-overlapping CCEs.

[0056] In some embodiments, each serving cell has a DCI size budget for the UE. That is, for a cell, it is not expected that the total number of different DCI sizes that the UE is configured to monitor is greater than 4; or the total number of different DCI sizes that the C-RNTI is configured to monitor is greater than 3 for the cell.

[0057] refer to Figure 4A The present disclosure describes various embodiments of a method 400 for wireless communication. The method 400 may be performed by a wireless communication device (e.g., a user equipment). The method 400 may include some or all of the following steps: step 410, receiving a configuration including a value for a first group of cells, a first USS of MC-DCI on a scheduling cell, and a second USS on a scheduled cell associated with the first USS; and / or step 412, determining resources for the first USS and the second USS on the scheduling cell.

[0058] In some embodiments, the method may be performed by a wireless communication device (e.g., a user equipment). The method may include some or all of the following: receiving a configuration of a value of a first group of cells; receiving a first configuration of a first USS of MC-DCI on a scheduling cell; receiving a second configuration of a second USS on a scheduled cell associated with the first USS; and / or determining resources of the first USS and the second USS on the scheduling cell.

[0059] refer to Figure 4B The present disclosure describes various embodiments of another method 430 for wireless communication. The method 430 may be performed by a wireless communication node (e.g., a base station or a RAN). The method 430 may include step 440 of sending a configuration including a value of a first group of cells, a first USS of MC-DCI on a scheduling cell, and a second USS on a scheduled cell associated with the first USS, such that, in response to receiving the configuration, the wireless communication device is configured to determine resources of the first USS and the second USS on the scheduling cell.

[0060] In some embodiments, a method may be performed by a wireless communication node (e.g., a base station or a RAN). The method may include part or all of the following: sending a configuration of a value of a first group of cells; sending a first configuration of a first USS of MC-DCI on a scheduling cell; and / or sending a second configuration of a second USS on a scheduled cell associated with the first USS, so that a wireless communication device is configured to determine resources of the first USS and the second USS on the scheduling cell.

[0061] In some implementations, the value is configured as a Carrier Indicator Field (CIF) of the scheduled cell.

[0062] In some embodiments, the first group of cells includes scheduled cells; the MC-DCI configuration on the scheduled cells in the first group of cells is for multi-cell scheduling; and / or the first USS and the second USS have the same search space ID.

[0063] In some implementations, the reference cell includes one of the following: a scheduling cell carrying MC-DCI or a scheduled cell in the first group of cells.

[0064] In some implementations, the MC-DCI is one of: a DCI of format 0_x or a DCI of format 1_x.

[0065] In some implementations, the value comprises a value of a CIF of the first group of cells.

[0066] In some embodiments, the step of determining resources of the first USS and the second USS on the scheduling cell includes determining a CCE index corresponding to a candidate configured in the first USS or the second USS or a combined USS, wherein the combined USS includes the candidate in the first USS and the candidate in the second USS. In some embodiments, the candidate is counted on the scheduled cell based on the candidate in the first USS and the candidate in the second USS.

[0067] In some embodiments, candidates for an aggregation level are counted as the sum of candidates for the same aggregation level in the first and second USSs; and / or CCE resources corresponding to the sum of candidates in the combined USS are derived based on the value of the first group of cells.

[0068] In some embodiments, CCE resources corresponding to candidates in the first USS and candidates in the second USS are derived based on values ​​of the first group of cells, respectively, and / or candidates of an aggregation level are counted as the sum of candidates of the same aggregation level in the first USS and the second USS, and in response to any two candidates in the first USS and the second USS overlapping each other, only one of the two candidates is counted.

[0069] In some embodiments, the following parts of the MC-DCI are configured to be counted on the scheduled cell: at least one DCI size, at least one blind decoding, or at least one non-overlapping CCE, the following parts of the MC-DCI are configured to be counted on the scheduling cell: at least one DCI size, at least one blind decoding, or at least one non-overlapping CCE, and / or the following MC-DCI are configured to be counted on the scheduled cell and the scheduling cell respectively: at least one DCI size, at least one blind decoding, or at least one non-overlapping CCE.

[0070] In some embodiments, both the candidates configured in the first USS and the candidates configured in the second USS are counted on the scheduled cell; and / or the CCE resources corresponding to the candidates in the first USS are derived based on the first value of the scheduling cell, and the CCE resources corresponding to the candidates in the second USS are derived based on the value of the first group of cells.

[0071] In some embodiments, candidates configured in the first USS are counted on the scheduling cell, and candidates configured in the second USS are counted on the scheduled cell; and / or CCE resources corresponding to the candidates in the first USS are derived based on the first value of the scheduling cell, and CCE resources corresponding to the candidates in the second USS are derived based on the value of the first group of cells.

[0072] In some embodiments, candidates in the second USS are counted on the scheduled cell; and / or CCE resources corresponding to the candidates in the second USS are determined based on values ​​of the first group of cells.

[0073] In some embodiments, candidates in the first USS are discarded, and / or the number of candidates in the first USS is configured to be zero.

[0074] In some embodiments, in addition to the first group of cells, at least another group of cells is configured for multi-cell scheduling by MC-DCI on the same scheduling cell, and the third USS configured on the scheduled cells of the other group of cells has the same search space ID as the first USS and the second USS; the CCE resources corresponding to the candidates in the first USS are determined based on the values ​​of each group of cells respectively; the candidates in the first USS and the candidates in the second USS are counted on the scheduled cells in the first group of cells; and / or the candidates in the first USS and the candidates in the third USS are counted on the scheduled cells in the other group of cells.

[0075] In some embodiments, in addition to the first group of cells, at least another group of cells is configured by MC-DCI on the same scheduling cell for multi-cell scheduling, and the third USS configured on the scheduled cells of the other group of cells has the same search space ID as the fourth USS configured on the scheduling cell; and / or the search space configured with the MC-DCI format includes a parameter of a set index or a second value of a group of cells.

[0076] refer to Figure 4C , the present disclosure describes various embodiments of another method 450 for wireless communication. Method 450 can be performed by a wireless communication device (e.g., a user equipment or a mobile terminal). Method 450 may include some or all of the following steps: step 460, receiving a configuration of a search space for MC-DCI for at least one group of cells, wherein: the at least one group of cells is configured for multi-cell scheduling, and / or at least one cell in the at least one group of cells is scheduled by MC-DCI on a PDCCH candidate on a scheduling cell; and / or step 462, in response to the MC-DCI including a specific field, applying a set of specific functions based on the specific field.

[0077] refer to Figure 4D The present disclosure describes various embodiments of another method 470 for wireless communication. The method 470 may be performed by a wireless communication node (e.g., a base station or a RAN). The method 470 may include step 480 of transmitting a configuration of a search space for MC-DCI for at least one group of cells, wherein: the at least one group of cells is configured for multi-cell scheduling, at least one cell in the at least one group of cells is scheduled by MC-DCI on a PDCCH candidate on a scheduling cell, and / or the wireless communication device, upon receiving the configuration and in response to the MC-DCI including a specific field, is configured to apply a set of specific functions based on the specific field.

[0078] In some embodiments, in response to a specific field being a secondary cell (SCell) sleep indication, a set of specific functions includes: applying one of the following conditions: the frequency domain resource allocation (FDRA) field of all co-scheduled cells at one time satisfies the condition, or the FDRA field of at least one scheduled cell of the co-scheduled cells at one time satisfies the condition; and / or in response to applying the above conditions, at least one field of the modulation and coding scheme (MCS), new data indicator (NDI), redundancy version (RV), HARQ process number (HPN), antenna port (AP), or demodulation reference signal (DMRS) sequence initialization (DSI) is concatenated in one of the following orders: the value of one field of a group of cells, followed by the value of another field of a group of cells, and / or the values ​​of all fields of one cell, followed by the values ​​of all fields of another cell.

[0079] In some embodiments, in response to a particular field being a downlink feedback indicator (DFI), a set of particular functions includes one of the following: using only one cell among the co-scheduled cells at a time to indicate a configured grant-DFI (CG-DFI), and using the first type of field of the cell for a hybrid automatic repeat request acknowledgment (HARQ-ACK) bitmap; using all cells of the co-scheduled cells at a time to indicate the CG-DFI, and using all remaining fields as a HARQ-ACK bitmap, and / or using only one or more cells among the co-scheduled cells at a time to indicate the CG-DFI, and using the first type of field of the cell for the HARQ-ACK bitmap.

[0080] In some embodiments, in response to a specific field being an X-bit first type Sounding Reference Signal (SRS) request, a set of specific functions includes one of the following: using the specific field as a 1-bit second type for a non-supplementary uplink (non-SUL) / supplementary uplink (SUL) indicator and an X-1-bit first type for SRS; using the specific field as a 2-bit second type for a non-SUL / SUL indicator and an X-2-bit first type for SRS, and / or implicitly indicating non-SUL / SUL via a column in a table configured by a higher layer parameter and using the specific field as an X-bit first type for SRS, where X is an integer greater than 2. In some embodiments, X is 4.

[0081] In some embodiments, in response to the specific field being a UL or SUL (UL / SUL) indicator and more than one group of cells being introduced: only one group of cells is configured with a first type UL / SUL indicator, or the number of cells in one cell group is not greater than N, where N is a positive integer.

[0082] Embodiment Set I

[0083] This disclosure describes various embodiments in which USSs with DCI formats 0_X / 1_X can be configured on two cells based on the following scenarios. If a search space with DCI formats 0_X / 1_X is configured on the cell in addition to the scheduling cell, the reference cell is one of the cells configured with search spaces with DCI formats 0_X / 1_X and is associated with the search space of the scheduling cell with the same search space ID. In some implementations, the cell on which the USS with DCI formats 0_X / 1_X is configured depends on the gNB.

[0084] Various embodiments can solve the problem of how to derive USS of DCI format 0_X / 1_X based on n_CI of a group of cells and how to count candidates for reference cells when both the scheduling cell and a scheduled cell are configured with USS of DCI format 0_X / 1_X.

[0085] In some implementations, USS#A (USS#1 configured on a scheduled cell in a group of cells) and USS#B (USS#1 configured on a scheduling cell) are configured based on SS linkage. There may be two cases: Case 1, where the scheduling cell is within the group; and Case 2, where the scheduling cell is not included in the group.

[0086] There are the following options to address this issue: when determining the search space for DCI format 0_X / 1_X, using n_CI of a group of cells, whether to calculate only candidates for USS#A or USS#B, or to calculate both candidates for USS#A and USS#B.

[0087] For option 1, candidates in both USSs are counted, and the CCE resources of the candidates in both USSs are determined by the n_CI of the group of cells. Option 1-1: Candidates of the same aggregation level are summed, and then the n_CI of the group of cells is used to derive the CCE resources of the candidates, counting all candidates. Option 1-2: The n_CI of the group of cells is used to derive the CCE resources of the candidates in each USS separately. If two candidates in two USSs overlap, they are counted as one candidate.

[0088] In some implementations, both USS#A and USS#B are counted, and the n_CI of the group of cells is used to determine the candidates in these two USSs. The benefit of this option is that the scheduling cell is also in the group of cells, and only one reference cell is assumed. However, a potential problem is that the candidates in each USS may surpass each other. As a result, the number of candidates can be based on Figure 5A Determine as shown in option 1-1, and / or based on Figure 5B Please confirm with options 1-2 as shown.

[0089] In some embodiments, based on Option 1-2, the BD / CCE or DCI size of DCI format 0_X / 1_X of USS#A and USS#B is counted using one of the following options: Option 1-2-1: All are counted on the scheduling cell. Option 1-2-2: All are counted on the scheduled cell. If two candidates of the same aggregation level of two USSs overlap, they are counted as one candidate. Option 1-2-3: Candidates in each USS are counted separately on the scheduled cell and the scheduling cell.

[0090] For Option 2, candidates in both USSs are counted. The CCE resources of the candidates in the USS configured on the scheduled cell are determined by the n_CI of the group of cells, while the CCE resources of the candidates in the USS configured on the scheduling cell are determined by the n_CI of the scheduling cell. The BD / CCE or DCI size of DCI format 0_X / 1_X for USS#A and USS#B is calculated as one of the following: Option 2-1: All candidates are counted in the scheduling cell. Option 2-2: Candidates in each USS are counted separately in the scheduled cell and the scheduling cell.

[0091] In some embodiments, reference Figure 6, both USS#A and USS#B are counted, and the candidates in USS#A are determined by the n_CI of this group of cells. The candidates in USS#B are determined by the n_CI of the scheduling cell. This option facilitates the operation of the scheduled cell, making the operation of the scheduled cell simpler, and both are counted on the reference cell, and the operation of the scheduling cell complies with the current specification, which makes the CCE resources of USS#A and USS#B more balanced on the scheduling cell.

[0092] In some embodiments, one potential problem may include that it may not make sense to schedule a cell outside of the set of cells.

[0093] For option 3, only the candidates in the USS configured on the scheduled cell are counted, and the CCE resources of the candidates in the USS configured on the scheduled cell are determined by the n_CI of this group of cells. The candidates in the USS configured on the scheduling cell are discarded or the number of candidates in the USS configured on the scheduling cell is configured to 0.

[0094] In some embodiments, reference Figure 7 , only USS#A is counted, and the candidates in USS#A are determined by the n_CI of this group of cells. Candidates in USS#B are discarded or configured as 0 candidates. This option facilitates operation of scheduled cells that only configure candidates on themselves. Only SS links are used, and candidates in USSs with the same ID in the scheduling cell are not used, to avoid the problem of how to count two USSs in two cells with the same n_CI.

[0095] There may be various benefits associated with various embodiments. For example, in some embodiments, when both the scheduling cell and a scheduled cell are configured with USSs of DCI format 0_X / 1_X, how to derive the USSs of DCI format 0_X / 1_X based on the n_CI of this group of cells and how to count the candidates of the reference cell, by partial or full counting, to determine CCE resources or candidates. For the UE, it is beneficial to support this capability to align with the network's understanding of resources and the number of candidates used for blind decoding of MC-DCI on the scheduling cell.

[0096] Example Set II

[0097] This disclosure describes various embodiments in which multiple groups of cells may be supported for multi-cell scheduling. Since a maximum of 4 cells may be configured / co-scheduled, but a cell group may have a maximum of 8 cells, it is reasonable to support at least 2 groups of cells.

[0098] In some embodiments, to monitor PDCCH candidates for a group of cells configured for multi-cell scheduling, the n_CI in the search space equation is determined by the value configured for that group of cells via RRC signaling. In some embodiments, scheduling multiple groups of cells from the same scheduling cell is not supported. In some embodiments, scheduling multiple groups of cells from the same scheduling cell is supported, where the DCI format 1_X / 0_X is associated with which group of cells is distinguished by the network configuration of the multiple groups of cells. In some embodiments, scheduling multiple groups of cells from the same scheduling cell is supported, where the DCI format 1_X / 0_X has an indication field indicating which group of cells the DCI format 1_X / 0_X is associated with.

[0099] Various embodiments describe methods of how to handle more than one group of configurations. In the case where multiple groups of cells are scheduled from the same scheduling cell, the search space configuration is handled by one of the following options.

[0100] For option 1, configure one / the same DCI format 0x / 1x search space and use the n_CI of each group of cells to determine the CCE resources. With this option, although the number of candidates for a search space will double, they will be used for different groups of cells.

[0101] For option 2, a different search space is configured for each group of cells. That is, the search space with DCI format 0_X / 1_X also includes a set index or n_CI parameter for a group of cells. With this option, the search space configuration also includes parameters for which group of cells are scheduled. For example, the set index is added to the USS configuration.

[0102] There may be various benefits associated with various embodiments. For example, in some embodiments, when supporting multiple groups of cells scheduled from the same scheduling cell, one or different search spaces may be configured and used for more than one group of cells. This may facilitate capacity or load balancing of CCE resources for MC-DCI for cells in different groups.

[0103] Example Set III

[0104] The present disclosure describes various embodiments, wherein for multi-cell scheduling, when an SCell dormancy indication field is configured in MC-DCI, the embodiments disclose how to apply MC-DCI-based functions.

[0105] In some embodiments, the SCell dormancy indication field in the current DCI format can be described as follows. When the higher-layer parameter dormancyGroupWithinActiveTime is not configured, the SCell dormancy indication can have 0 bits; otherwise, a 1, 2, 3, 4, or 5-bit bitmap is determined according to the number of different DormancyGroupIDs provided by the higher-layer parameter dormancyGroupWithinActiveTime, where each bit corresponds to one of the SCell groups configured by the higher-layer parameter dormancyGroupWithinActiveTime, and the most significant bit (MSB) to the least significant bit (LSB) of the bitmap correspond to the first to last configured SCell groups in ascending order of DormancyGroupID. This field is present only when the format is carried by PDCCH on the primary cell during the discontinuous reception (DRX) active time and the UE is configured with at least two DL BWPs for the SCell.

[0106] In some embodiments, when a single HARQ-ACK request is not present or is set to "0", and for resource allocation type 0, all bits of the frequency domain resource allocation are set to 0, or for resource allocation type 1, all bits of the frequency domain resource allocation are set to 1, or for dynamic switching resource allocation type, all bits of the frequency domain resource allocation are set to 0 or 1, the field is retained and the following fields in the above fields are used for SCell dormancy indication, wherein each bit corresponds to one of the configured SCells, corresponding to the SCell with the lowest to highest SCell index, and the MSB to LSB of the following fields are concatenated in the following order: modulation and coding scheme of transport block 1; new data indicator of transport block 1; redundant version of transport block 1; HARQ process number; antenna port; and DMRS sequence initialization.

[0107] In some embodiments, a condition for applying the SCell sleep indication may include whether the single HARQ-ACK request is not present or is set to "0", and for resource allocation type 0, all bits of the frequency domain resource allocation are set to 0, for resource allocation type 1, all bits of the frequency domain resource allocation are set to 1, or for dynamic switching resource allocation type, all bits of the frequency domain resource allocation are set to 0 or 1.

[0108] In some implementations, the single HARQ acknowledgment request is type 1A, and / or the FDRA is type 2.

[0109] In various embodiments / implementations of the present disclosure, a Type 1A field is a single field that indicates common information to all co-scheduled cells; a Type 1B field is a single field that indicates individual information to each co-scheduled cell via a joint indication; and a Type 1C field is a single field that indicates information to only one co-scheduled cell. A Type 2 field is a separate field for each co-scheduled cell. A Type 3 field is either common or independent for each co-scheduled cell, or independent for each subgroup, depending on explicit configuration.

[0110] In some embodiments, in the case of MC-DCI, the application of the condition is one of the following: Alternative 1: The FDRA field of all co-scheduled cells at once meets the condition. Alternative 2: The FDRA field of at least one scheduled cell among the co-scheduled cells at once meets the condition.

[0111] In some embodiments, when this condition is applied, all or part of the following fields are used in sequence, including MCS, NDI, RV, HPN, AP, or DSI, based on one of the following: Alternative 1 fields take precedence; Alternative 2 cells take precedence; Alternative 3 and Alternative 1 / 2 use only Type 2 fields; Alternative 4, Alternative 2, and Type 1A fields are used as first / last cell fields.

[0112] For a non-limiting example, when the fields of all co-scheduled cells (e.g., cell #1 and cell #2) meet the conditions at once, the following fields are used in sequence, concatenated based on one of the following: For Alternative 1 (field priority): MCS 1 of cell 1, MCS 1 of cell 2, NDI 1 of cell 1, NDI 1 of cell 2, etc. For Alternative 2 (cell priority): MCS 1 of cell 1, NDI 1 of cell 1, RV of cell 1, ..., MCS 1 of cell 2, NDI 1 of cell 2, and RV 1 of cell 2.

[0113] In some embodiments, because some fields are type 1A (e.g., DMRS sequence initialization), some fields are type 3 (e.g., antenna port), and some fields are type 2 (e.g., MCS, RV, NDI, or HPN), when using alternative 2, the bit order can be arranged according to one of the following.

[0114] In an alternative embodiment, only type 2 fields are used, including MCS, RV, NDI, and HPN. Antenna ports can also be used if they are configured as type 2. DMRS sequence initialization is not used.

[0115] For another alternative embodiment, the Type 1 field may be used as the first / last cell field. Thus, the DMRS sequence initialization and antenna port (when configured as Type 1A) may be used as the first cell or last cell field.

[0116] Optionally, for another alternative implementation, when the above conditions apply only to Type 1A / 1B, the field of Type 1C may be directly used for the cell to which the field is applied.

[0117] There may be various benefits associated with implementations / examples. For example, in some embodiments, when the SCell Sleep Indication field is configured in the MC-DCI, applying MC-DCI-based functionality can be achieved by performing FDRA on one, some, or all of the multiple cells that meet the conditions, and first using the field or cell to determine the SCell Sleep Indication. It is beneficial for the UE to support this functionality and be consistent with the network's understanding of the SCell Sleep Indication in the MC-DCI.

[0118] Example Set IV

[0119] For multi-cell scheduling, the present disclosure describes various embodiments of applying MC-DCI-based functions when a Downlink Feedback Indicator (DFI) field is configured in MC-DCI.

[0120] In some embodiments, the DFI field of the current DCI format is listed below. DCI format 0_1 ​​with CRC scrambled by C-RNTI or CS-RNTI or SP-CSI-RNTI or MCS-C-RNTI can be used to transmit information including a DFI flag. The DFI flag can be 0 or 1 bit. When the UE is configured to monitor DCI format 0_1 ​​with CRC scrambled by CS-RNTI, and when the higher layer parameter cg-RetransmissionTimer is configured, the DFI flag is 1 bit when operating in a cell with shared spectrum channel access. For DCI format 0_1 ​​with CRC scrambled by CS-RNTI, a bit value of 0 indicates activation or release of type 2 CG transmission, and a bit value of 1 indicates CG-DFI. For DCI format 0_1 ​​with CRC scrambled by C-RNTI / SP-CSI-RNTI / MCS-C-RNTI, and for operation in a cell with shared spectrum channel access, this bit is reserved. Otherwise, in other cases, the DFI flag can be 0 bit.

[0121] In some embodiments, when DCI format 0_1 ​​is used to indicate CG-DFI, all remaining fields are set as follows. The HARQ-ACK bitmap has 16 bits, where the order of the bitmap to HARQ process index mapping is such that the HARQ process index is mapped in ascending order from MSB to LSB of the bitmap. For each bit of the bitmap, a value of 1 indicates an ACK and a value of 0 indicates a NACK. The TPC command for the scheduled PUSCH has a predefined 2 bits. In some embodiments, all remaining bits in format 0_1 ​​are set to zero.

[0122] In some embodiments, when DCI format 0_X can be used to indicate CG-DFI, all co-scheduled cells are shared spectrum and the DFI flag is indicated as 1 (type 1A / 1C) or all bits are 1 (type 2), and the subsequent bits can be cell priority or field priority to be sorted.

[0123] In some implementations, the DFI flag in DCI format 0_X may be type 1A, type 1C, or type 2.

[0124] For one option, in the case of Type 1C, only one of the co-scheduled cells indicates CG-DFI at a time, and the Type 2 field of that cell is used for the HARQ-ACK bitmap and TPC is used for PUSCH. In some implementations, the Type 2 field of each cell will be used to indicate the HARQ-ACK bitmap, and TPC will be used only for PUSCH of that cell.

[0125] For another option, in case of Type 1A, CG-DFI is indicated in all cells that are scheduled together at one time, and all remaining fields are set to HARQ-ACK bitmap, and TPC for PUSCH has (1) field priority or (2) cell priority to use the fields of each scheduled cell.

[0126] For another option, in the case of Type 2, CG-DFI is indicated at a time only for a cell that is co-scheduled, and the Type 2 field of the cell is used for the HARQ-ACK bitmap and TPC is used for PUSCH, that is, the Type 2 field of each cell will be used to indicate the HARQ-ACK bitmap and TPC for PUSCH with (1) field priority or (2) cell priority to use the field of each scheduled cell.

[0127] There may be various benefits associated with embodiments / implementations. For example, in this embodiment, when the DFI field is configured in MC-DCI, the MC-DCI-based functionality can be implemented by using the type 2 field of one, some, or all cells of the HARQ-ACK bitmap and the TPC of the PUSCH. It is beneficial for the UE to support this functionality and be consistent with the network's understanding of the DFI in the MC-DCI.

[0128] Embodiment Set V

[0129] For multi-cell scheduling, the present disclosure describes various embodiments of applying MC-DCI-based functions when an N-bit type 1B SRS request is used in MC-DCI. Optionally, N=4.

[0130] In some embodiments, a DCI with format 0_1 ​​may include a UL / SUL indicator. For a UE that does not have supplementaryUplink configured in the ServingCellConfig in the cell, or for a UE that has supplementaryUplink configured in the ServingCellConfig in the cell but has only one carrier configured for PUSCH transmission in the cell, the UL / SUL indicator may be 0 bits; otherwise, it may be 1 bit as defined in Table 3.

[0131] In some embodiments, a DCI with format 0_1 ​​may include an SRS request. The SRS request may have 2 bits, as defined in Table 4, for UEs that are not configured with supplementaryUplink in the ServingCellConfig in the cell; and 3 bits, for UEs that are configured with supplementaryUplink in the ServingCellConfig in the cell, where the first bit is a non-SUL / SUL indicator as defined in Table 3, and the second and third bits are defined by Table 4. This bit field may also indicate the associated CSI-RS.

[0132] In some embodiments, a DCI with format 0_1 ​​may include an SRS offset indicator, which may have 0, 1, or 2 bits. If the higher-level parameter AvailableSlotOffset is not configured for any aperiodic SRS resource set in the scheduled cell, or if the higher-level parameter AvailableSlotOffset is configured for at least one periodic SRS resource set in the scheduled cell, and the maximum number of entries of AvailableSlotOffset configured for all aperiodic SRS resource sets is 1, the SRS offset indicator may have 0 bits; otherwise, according to Table 5, The bit is used to indicate the available slot offset, where K is the maximum number of entries of AvailableSlotOffset configured for all aperiodic SRS resource sets in the scheduled cell.

[0133] Table 3: UL / SUL designators

[0134] UL / SUL indicator values Uplink 0 Non-supplemental uplink 1 Auxiliary uplink

[0135] Table 4: SRS Request

[0136]

[0137]

[0138] Table 5: SRS offset indicator

[0139]

[0140]

[0141] In some embodiments, for DCI format 0_1, the UL / SUL indicator is used to indicate the carrier of the PUSCH transmission. The first bit of the 3-bit SRS request is a non-SUL / SUL indicator, which is used to indicate the carrier of the SRS transmission.

[0142] In some embodiments, when a UE reports an optional feature, different values ​​may be used to indicate the UL / SUL indicator and the non-SUL / SUL indicator. The optional UE feature is "simultaneous transmission of SRS on SUL / non-SUL carriers and simultaneous transmission of PUSCH / PUCCH / SRS on another UL carrier in the same cell."

[0143] In some embodiments, Type 1B for 4-bit SRS request may be used based on one of the following options: Option 1: Based on Type 1C for UL / SUL indicator; Option 2: Based on Type 2 for UL / SUL indicator.

[0144] Option 1 includes a 1-bit non-SUL / SUL indicator + a 3-bit Type 1B for SRS requests for four co-scheduled cells, or if supplementaryUplink is not configured in the cell's ServingCellConfig, a 3-bit Type 1B for SRS requests for four co-scheduled cells. The 1-bit non-SUL / SUL indicator applies only to one cell. Table 6 shows the 3-bit Type 1B corresponding to the SRS request for four co-scheduled cells, where SRS 0 / 1 / 2 / 3 represents the values ​​00 / 01 / 10 / 11 in Table 4.

[0145] For the SRS offset indicator, up to 3 bits may be used, similar to Table 6, as shown in Table 7, where offsets 0 / 1 / 2 / 3 represent values ​​00 / 01 / 10 / 11 in Table 5.

[0146] Table 6: SRS Request

[0147] index Cell 0 Community 1 Community 2 Community 3 0 SRS 0 SRS 0 SRS 0 SRS 0 1 SRS1 SRS1 SRS1 SRS1 2 SRS2 SRS2 SRS2 SRS2 3 SRS 3 SRS 3 SRS 3 SRS 3 4 SRS 0 SRS1 SRS2 SRS 3 5 SRS1 SRS2 SRS 3 SRS 0 6 SRS2 SRS 3 SRS 0 SRS1 7 SRS 3 SRS 0 SRS1 SRS2

[0148] Table 7: SRS offset indicator

[0149] index Cell 0 Community 1 Community 2 Community 3 0 Offset 0 0 or reserved Offset 0 Offset 0 1 Offset 1 0 or reserved Offset 1 Offset 1 2 Offset 2 0 or reserved Offset 0 Offset 2 3 Offset 3 0 or reserved Offset 1 reserve 4 Offset 0 0 or reserved Offset 0 Offset 0 5 Offset 1 0 or reserved Offset 1 Offset 1 6 Offset 2 0 or reserved Offset 0 Offset 2 7 Offset 3 0 or reserved Offset 1 reserve

[0150] As described below, Option 2 may include more than one sub-option. Option 2-1: 1-bit non-SUL / SUL indicator + 3-bit Type 1B for SRS requests for 4 co-scheduled cells, or 3-bit Type 1B for SRS requests for 4 co-scheduled cells if supplementaryUplink is not configured in the cell's ServingCellConfig. The 1-bit Type 1A non-SUL / SUL indicator applies to all cells. Option 2-2: 2-bit non-SUL / SUL indicator + 2-bit Type 1B for SRS requests for 4 co-scheduled cells, or 2 or 3-bit Type 1B for SRS requests for 4 co-scheduled cells if supplementaryUplink is not configured in the cell's ServingCellConfig. The 2-bit Type 1B non-SUL / SUL indicator applies to all cells. Option 2-3: 0-bit non-SUL / SUL indicator (implicitly indicated by an additional column in the RRC table) + 4-bit type 1B for SRS requests of 4 co-scheduled cells. When supplementaryUplink is not configured in the cell's ServingCellConfig, the UE can discard the cell's non-SUL / SUL indicator. Optionally, a configuration restriction is introduced to disallow at least one of SUL+SUL and SUL+non-corresponding NUL. That is, whether simultaneous SRS transmission between cells on a SUL carrier and other SUL carriers, or on a SUL carrier and a non-corresponding NUL carrier, is supported depends on the UE's capabilities.

[0151] Table 8: SUL and non-SUL

[0152]

[0153]

[0154] In some implementations, simultaneous SRS transmission between cells as shown in Table 8 may be supported on either a SUL carrier and other SUL carriers, or on a SUL carrier and a non-corresponding NUL carrier. When simultaneous SRS transmission between cells on a UL carrier and other SUL carriers is not supported, index x=1 / 2 is not supported. When simultaneous SRS transmission between cells on a UL carrier and a non-corresponding NUL carrier is not supported, index x=15 is not supported.

[0155] In some implementations, up to 3 bits may be used for the SRS offset indicator, as also shown in Table 7. The SRS offset indicator field is independent of the UL / SUL indicator.

[0156] To summarize some embodiments, the 4-bit Type 1B SRS request field in the MC-DCI format is used by one of the following: 1-bit Type 1A / 1C non-SUL / SUL indicator + 3-bit Type 1B for SRS; 2-bit Type 1B non-SUL / SUL indicator + 2 / 3-bit Type 1B for SRS; or 0-bit non-SUL / SUL indicator (implicitly indicated by an additional column in the RRC table) + 4-bit Type 1B for SRS requests for 4 co-scheduled cells. Optionally, a configuration restriction is introduced to disallow at least one of SUL+SUL, SUL+non-corresponding NUL.

[0157] There may be various benefits associated with some embodiments / implementations. For example, in this embodiment, when the Type 1B SRS request field is used in MC-DCI, the MC-DCI-based functionality can be implemented by using explicit or implicit indication of the non-SUL / SUL indicator. For the UE, supporting this functionality and being consistent with the network's understanding of the SRS request in the MC-DCI is beneficial.

[0158] Example Set VI

[0159] For multi-cell scheduling, the present disclosure describes various embodiments of applying MC-DCI-based functions when a UL / SUL indicator field is configured in MC-DCI.

[0160] In some embodiments, three alternatives / options for the UL / SUL indicator field in MC-DCI are attempted to be down-selected. For one alternative, the UL / SUL indicator in DCI format 0_X for multi-cell PUSCH scheduling is 1 bit (when present) for one serving cell within a set of commonly scheduled cells (i.e., type 1C). For another alternative, the UL / SUL indicator in DCI format 0_X for multi-cell PUSCH scheduling is the sum of {0, 1} bits for each cell in the set of DCI format 0_X (i.e., type 2) configurations. For another alternative, the UL / SUL indicator field is excluded from DCI format 0_X. In some embodiments, all or some of the above alternatives focus on the case of only one group of cells.

[0161] When Type 1C is used for the UL / SUL indicator, various embodiments are described for determining the number of cells configured with a SUL carrier when two groups of cells are supported. For example, there are 8 cells in a cell group (cells #0 / 1 / 2 / 3 / 4 / 5 / 6 / 7), group #0 is configured with cells #0 / 1 / 2 / 3, and group #1 is configured with cells #4 / 5 / 6 / 7. When Type 1C of the UL / SUL indicator is used, only one cell with SUL can be supported by one of the following options. In some embodiments, when the intention is to limit the number of cells in a cell group to only SUL, other restrictions may be considered.

[0162] For option 1, only one group can be configured with the UL / SUL indicator. That is, no matter more than one group is supported, i.e., 2 or 4 groups, only one group can be configured with the Type 1C UL / SUL indicator field.

[0163] For option 2, multiple groups are not supported when the number of cells is not greater than 4. This is beneficial when there are not many cells in a cell group.

[0164] For option 3, more than one set may not be supported.

[0165] For option 4, the number of cells in a group may not be configured as 1. That is, the number of cells in a group may be configured as 2, 3, or 4. Otherwise, the multi-cell scheduling of MC-DCI will be equivalent to the single-cell scheduling of SC-DCI.

[0166] In some embodiments, when more than one group is introduced, the UL / SUL indicator may be used in the following cases: only one group may be configured with a Type 1C UL / SUL indicator; and / or when further combined, the number of cells within a cell group is not greater than N, e.g., N=4.

[0167] There are various benefits associated with the described embodiments / implementations. For example, in some embodiments, when the UL / SUL indicator field is used in MC-DCI and more than one set of cells is configured, and when Type 1C of the UL / SUL indicator is agreed upon, only one cell with SUL may be supported with additional restrictions. It is beneficial for the UE to support this functionality and be consistent with the network's understanding of the UL / SUL indicator in MC-DCI.

[0168] Example Set VII

[0169] For multi-cell scheduling, the present disclosure describes various embodiments of applying MC-DCI-based functions when N-bit type 1 time domain resource allocation (TDRA) is used in MC-DCI.

[0170] In some embodiments, for multi-cell scheduling, for TDRA indication, part or all of the following protocols may be satisfied. The first protocol includes, for a group of cells co-scheduled by DCI format 0_X / 1_X, a single TDRA field in DCI format 0_X / 1_X indicates the time domain resource allocation of the group of cells, wherein a separate {SLIV, mapping type, scheduling offset K0 (or K2)} is indicated for each co-scheduled PDSCH / PUSCH. The second protocol includes, for DCI format 1_X / 0_X, the Type 1 field includes at least part or all of the following: ChannelAccess-Cpext and / or TDRA.

[0171] In some embodiments, in order to indicate the individual time domain resource allocations for the group of cells through a single TDRA field, a row in the TDRA table may include the time domain resource allocation for each scheduled cell. There are various options for the design of the TDRA table.

[0172] Option 1: The network can configure a TDRA table for each scheduled cell. The TDRA table is a combination of the TDRA tables of the scheduled cells. As can be seen, TDRA is a Type 1A field with an independent RRC configuration. The row index indicated by the TDRA field is shared by each scheduled cell and indicates a separate {SLIV, mapping type, scheduling offset K0 (or K2)} for each TDRA table of each scheduled cell.

[0173] Option 2: The network can configure a new TDRA table for multi-cell PDSCH / PUSCH scheduling. Each row of the new TDRA table can be configured with separate {SLIV, mapping type, scheduling offset K0 (or K2)} for multiple scheduled cells. This is a Type 1B field. The TDRA table for each scheduled cell can also be configured for single-cell scheduling. The TDRA field length depends on the number of rows configured in the table.

[0174] When the TDRA size differs for each cell in Option 1, or if the new TDRA table in Option 2 is not configured and falls back to Option 1, various embodiments are described to illustrate how to interpret the TDRA-based Type 1A field indication. For example, a group of cells includes Cell 1 and Cell 2. Based on Option 1, the TDRA table for Cell 1's PDSCH is configured as a 2-bit table with 4 entries, as shown in Table 9, and the TDRA table for Cell 2's PDSCH is a 3-bit table with 8 entries, as shown in Table 10. In the case where the commonly scheduled cells include Cell 1 and Cell 2 and the Type 1A-based TDRA field is a 3-bit table with the maximum size of cells within the group, when the TDRA field indicates '000', meaning the entry index is 0, the PDSCH on each cell will be scheduled according to the entry index = 0 of each TDRA table. When the TDRA field indicates '100', meaning the entry index is 4, how the PDSCH is scheduled can be determined by one of the following options. In other words, when the TDRA field indicates an invalid value or a value that does not exist in the configured TDRA table of one or more cells, how to schedule the PDSCH may be determined by one of the following options.

[0175] Solution 1: Only PDSCHs with available TDRA entries can be scheduled. That is, the PDSCH on cell 2 can be scheduled according to the entry index = 4 of the TDRA table configured in cell 2, while the PDSCH on cell 1 is not scheduled.

[0176] Solution 2: The PDSCH on each cell can be scheduled according to the entry index of each TDRA table = (indicated index) Mod (total number of entries). That is, the PDSCH on cell 1 can be scheduled according to the entry index = 4 Mod 4 = 0 of the TDRA table configured in cell 1, and the PDSCH on cell 2 can be scheduled according to the entry index = 4 Mod 8 = 4 of the TDRA table configured in cell 2.

[0177] Solution 3: The PDSCH on a cell may be scheduled based on the entry index of another cell with a valid entry. That is, the PDSCH on cell 2 may be scheduled based on the entry index = 4 of the TDRA table configured in cell 2. The PDSCH on cell 1 may be scheduled based on the same time domain resource allocation of the PDSCH on cell #2. Optionally, when there are more than one cell without a valid indication, the same time domain resource allocation of another cell with a valid entry is applied to all of them. Optionally, when there are more than one cell with a valid indication, the same time domain resource allocation as that of the cell with a valid entry is applied to all of the PDSCHs on the cells with invalid indications, where the cell is the cell with the lowest, maximum, or predefined cell index.

[0178] Table 9: TDRA table (2 bits)

[0179]

[0180]

[0181] Table 10: TDRA table (3 bits)

[0182] TDRA table entry (index) K0 SLIV or (S, L) Mapping Type 0 0 (0,14) Type A 1 0 (7,14) Type B 2 1 (0,14) Type A 3 1 (7,14) Type B 4 0 (3,14) Type A 5 0 (13,14) Type B 6 2 (0,14) Type A 7 2 (7,14) Type B

[0183] This disclosure describes various embodiments of a resource determination mechanism with MC-DCI.

[0184] Some embodiments provide solutions for deriving USSs of DCI formats 0_X / 1_X based on n_CI of a group of cells and / or counting candidates for reference cells when both the scheduling cell and one scheduled cell are configured with USSs of DCI formats 0_X / 1_X.

[0185] In Option 1, candidates in both USSs are counted, and the CCE resources of the candidates in both USSs are determined by the n_CI of the group of cells. Option 1-1: The candidates for one aggregation level are summed, and then the n_CI of the group of cells is used to derive the CCE resources of the candidates, counting all candidates. Option 1-2: The n_CI of the group of cells is used to derive the CCE resources of the candidates in each USS separately. If two candidates in two USSs overlap, they are counted as one candidate.

[0186] In Option 2, candidates in both USSs are counted, and the n_CI of the group of cells determines the candidate CCE resources in the USS configured on the scheduled cell, while the n_CI of the scheduling cell determines the candidate CCE resources in the USS configured on the scheduling cell. Option 2-1: Count all in the scheduling cell. Option 2-2: Count separately in the scheduled cell and the scheduling cell.

[0187] In option 3, only the candidates in the USS configured on the scheduled cell are counted, and the CCE resources of the candidates in the USS configured on the scheduled cell are determined by the n_CI of this group of cells. The candidates in the USS configured on the scheduling cell are discarded or the number of candidates in the USS configured on the scheduling cell is configured to 0.

[0188] Some embodiments describe search space configurations for the case where multiple groups of cells are scheduled from the same scheduling cell. Option 1: Using the same search space with DCI format 0_X / 1_X, the CCE resources are determined separately using the n_CI for each group of cells. Option 2: Using a different search space for each group of cells, i.e., the search space with DCI format 0_X / 1_X also includes a set index or n_CI parameter for the group of cells.

[0189] Some embodiments provide implementations corresponding to SCell sleep indication. Application conditions: Alternative 1, the FDRA field of all co-scheduled cells at one time meets the condition; Alternative 2, the FDRA field of at least one scheduling cell of the co-scheduled cells at one time meets the condition. In some embodiments, when the condition is applied, the following fields (MCS, NDI, RV, HPN, AP, DSI) are used in sequence based on one of the following items. Alternative 1, field priority; Alternative 2, cell priority; Alternative 3, field or cell priority, and only type 2 fields are used; Alternative 4, cell priority, type 1A fields are used as fields for the first / last cell.

[0190] Some embodiments provide implementations corresponding to the DFI flag. The DFI flag of DCI format 0_X can be type 1A / 1C / 2. Alternative solution 1, in the case of type 1C, only one cell of the co-scheduled cells is used at a time to indicate the CG-DFI, and the type 2 field of the cell is used for the HARQ-ACK bitmap, and TPC is used for PUSCH, that is, the type 2 field of each cell will be used to indicate the HARQ-ACK bitmap, and TPC is only used for the PUSCH of the cell. Alternative solution 2, in the case of type 1A, all cells of the co-scheduled cells are used at a time to indicate the CG-DFI, and all remaining fields are set to the HARQ-ACK bitmap, and TPC is used for PUSCH, for each scheduled cell, (1) field priority or (2) cell priority. Alternative Option 3, in the case of Type 2, only the cells of the co-scheduled cells are used to indicate the CG-DFI at a time, and the Type 2 field of the cell is used for the HARQ-ACK bitmap, and TPC is used for PUSCH, that is, the Type 2 field of each cell will be used to indicate the HARQ-ACK bitmap, and TPC is only used for the PUSCH of the cell.

[0191] Some embodiments provide implementations of a 4-bit type 1B SRS request field corresponding to the MC-DCI format. The 4-bit type 1B SRS request field of the MC-DCI format is used by one of the following. Alternative 1: 1-bit type 1A / 1C non-SUL / SUL indicator + 3-bit type 1B for SRS. Alternative 2: 2-bit type 1B non-SUL / SUL indicator + 2 / 3-bit type 1B for SRS. Alternative 3: 0-bit non-SUL / SUL indicator (implicitly indicated by an additional column in the RRC table) + 4-bit type 1B for SRS requests of 4 co-scheduled cells. Optionally, a configuration restriction is introduced to disallow at least one of SUL+SUL, SUL+non-corresponding NUL.

[0192] Some embodiments provide implementations corresponding to UL / SUL indicators. When multiple groups are introduced, the UL / SUL indicators can be used to: (1) only one group can be configured with a Type 1C UL / SUL indicator; (2) further combined with the number of cells in a cell group being no greater than N, for example, N=4.

[0193] This disclosure describes methods, apparatus, and computer-readable media for wireless communications. This disclosure addresses resource determination mechanisms with MC-DCI. The methods, apparatus, and computer-readable media described in this disclosure can improve the performance of wireless communications by addressing issues associated with resource determination mechanisms with MC-DCI, thereby improving efficiency and overall performance. The methods, apparatus, and computer-readable media described in this disclosure can improve the overall efficiency of wireless communication systems.

[0194] Throughout this specification, references to features, advantages, or similar language do not imply that all features and advantages that can be achieved with the present solution should be or are included in any single embodiment thereof. Rather, language referring to features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present solution. Thus, discussions of features and advantages, and similar language, throughout this specification may, but do not necessarily, refer to the same embodiment.

[0195] Furthermore, the described features, advantages, and characteristics of the present solution may be combined in any suitable manner in one or more embodiments. A person skilled in the relevant art will recognize, based on the description herein, that the present solution may be implemented without one or more specific features or advantages of a particular embodiment. In other cases, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the present solution.

Claims

1. A method for wireless communication performed by a wireless communication device, comprising: receiving a configuration, wherein the configuration includes a value of a first group of cells, a first user-specific search space (USS) of multi-cell scheduling downlink control information (MC-DCI) on a scheduling cell, and a second USS on a scheduled cell associated with the first USS; and Determine resources of the first USS and the second USS on the scheduling cell.

2. A method for wireless communication performed by a wireless communication node, comprising: sending a configuration, wherein the configuration includes a value of a first group of cells, a first user-specific search space (USS) of multi-cell scheduling downlink control information (MC-DCI) on a scheduling cell, and a second USS on a scheduled cell associated with the first USS, so that in response to receiving the configuration, the wireless communication device is configured to determine resources of the first USS and the second USS on the scheduling cell.

3. The method according to claim 1 or 2, wherein: The first group of cells includes the scheduled cell; The first group of cells is configured by the MC-DCI on the scheduling cell for multi-cell scheduling; and The first USS and the second USS have the same search space identifier ID.

4. The method according to claim 1 or 2, wherein: Determining the resources of the first USS and the second USS on the scheduling cell includes: Determine a control channel element (CCE) index corresponding to a candidate configured in the first USS or the second USS or a combined USS, wherein the combined USS includes the candidate in the first USS and the candidate in the second USS.

5. The method according to claim 1 or 2, wherein: Based on the candidates in the first USS and the candidates in the second USS, candidates are counted on the scheduled cell.

6. The method according to claim 5, wherein: Candidates for an aggregation level are counted as the sum of candidates for the same aggregation level in the first USS and the second USS; as well as A control channel element (CCE) resource corresponding to the sum of the candidates in the combined USS is derived based on the values ​​of the first group of cells.

7. The method according to claim 5, wherein: Control channel element (CCE) resources corresponding to candidates in the first USS and candidates in the second USS are derived based on values ​​of the first group of cells, respectively, and candidates of an aggregation level are counted as a sum of candidates of the same aggregation level in the first USS and the second USS, and in response to any two candidates in the first USS and the second USS overlapping with each other, only one of the two candidates is counted.

8. The method according to claim 5, wherein: The candidate configured in the first USS and the candidate configured in the second USS are both counted on the scheduled cell; as well as A control channel element (CCE) resource corresponding to the candidate in the first USS is derived based on a first value of the scheduling cell, and a CCE resource corresponding to the candidate in the second USS is derived based on a value of the first group of cells.

9. The method according to claim 5, wherein: The candidates configured in the first USS are counted on the scheduling cell, and the candidates configured in the second USS are counted on the scheduled cell; as well as A control channel element (CCE) resource corresponding to the candidate in the first USS is derived based on a first value of the scheduling cell, and a CCE resource corresponding to the candidate in the second USS is derived based on a value of the first group of cells.

10. The method according to claim 1 or 2, wherein: Candidates in the second USS are counted on the scheduled cell; and A control channel element (CCE) resource corresponding to the candidate in the second USS is determined based on the value of the first group of cells.

11. The method according to claim 10, wherein: discard the candidate in the first USS, or The number of candidates in the first USS is configured to be zero.

12. The method according to claim 1 or 2, wherein: In addition to the first group of cells, at least another group of cells is configured by the MC-DCI on the same scheduling cell for multi-cell scheduling, and a third USS configured on the scheduled cells of the other group of cells has the same search space identifier ID as the first USS and the second USS; determining, based on the values ​​of each group of cells, control channel element (CCE) resources corresponding to the candidates in the first USS; Candidates in the first USS and candidates in the second USS are counted on the scheduled cell in the first group of cells; as well as The candidates in the first USS and the candidates in the third USS are counted on the scheduled cells in the another group of cells.

13. The method according to claim 1 or 2, wherein: In addition to the first group of cells, at least another group of cells is configured by the MC-DCI on the same scheduling cell for multi-cell scheduling, and a third USS configured on the scheduled cells of the other group of cells has the same search space identifier ID as a fourth USS configured on the scheduling cell; and The search space configured with the MC-DCI format includes a parameter of a set index or a second value of a group of cells.

14. A method for wireless communication performed by a wireless communication device, comprising: A configuration of a search space for multi-cell scheduling downlink control information MC-DCI for at least one group of cells is received, wherein: The at least one group of cells is configured for multi-cell scheduling, and scheduling at least one cell in the at least one group of cells by the MC-DCI on a physical downlink control channel PDCCH candidate on a scheduling cell; and In response to the MC-DCI including a specific field, a set of specific functions is applied based on the specific field.

15. A method for wireless communication performed by a wireless communication node, comprising: Configuration of a search space for sending multi-cell scheduling downlink control information MC-DCI for at least one group of cells, where: The at least one group of cells is configured for multi-cell scheduling, The at least one cell in the at least one group of cells is scheduled by the MC-DCI on a physical downlink control channel (PDCCH) candidate on the scheduling cell, and the wireless communication device, upon receiving the configuration and in response to the MC-DCI including a specific field, is configured to apply a set of specific functions based on the specific field.

16. The method according to claim 14 or 15, wherein: In response to the specific field being a secondary cell (SCell) sleep indication, the set of specific functions includes: Apply one of the following conditions: the frequency domain resource allocation FDRA field of all co-scheduled cells satisfies the condition at one time, or the FDRA field of at least one scheduled cell of the co-scheduled cells satisfies the condition at one time; and In response to the condition being applied, fields including at least one of a modulation and coding scheme MCS, a new data indicator NDI, a redundancy version RV, a hybrid automatic repeat request HARQ process number HPN, an antenna port AP, or a demodulation reference signal DMRS sequence initialization DSI are concatenated in one of the following orders: The value of one field of the set of cells, followed by the value of another field of the set of cells, or The values ​​of all fields of one cell, followed by the values ​​of all fields of another cell.

17. The method according to claim 14 or 15, wherein: In response to the specific field being a downlink feedback indicator (DFI), the set of specific functions includes one of the following: Only one of the co-scheduled cells is used at a time to indicate the configured granted DFI, i.e., CG-DFI, and the first type of field of the cell is used for the hybrid automatic repeat request acknowledgement HARQ-ACK bitmap, Use all cells of the co-scheduled cells at once to indicate the CG-DFI, and use all remaining fields as the HARQ-ACK bitmap, or Only one or more of the co-scheduled cells are used at a time to indicate CG-DFI, and the first type of field of the cell is used for the HARQ-ACK bitmap.

18. The method according to claim 14 or 15, wherein: In response to the specific field being an X-bit first-type sounding reference signal SRS request, the set of specific functions includes one of the following: using the specific field as a 1-bit second type for a non-supplemental uplink / supplemental uplink (SUL) indicator and an X-1-bit first type for an SRS, Using the specific field as a 2-bit second type for non-SUL / SUL indicator and an X-2-bit first type for SRS, or Implicitly indicating non-SUL / SUL by a column in a table configured by a higher layer parameter, and using the specific field as the X-bit first type for SRS, Here, X is an integer greater than 2.

19. The method according to claim 14 or 15, wherein: In response to the specific field being an uplink or supplementary uplink UL / SUL indicator and more than one group of cells being introduced: Only one group of cells is configured with the first type of UL / SUL indicator, or The number of cells in a cell group is no greater than N, where N is a positive integer.

20. A wireless communication device comprising a processor and a memory, wherein: The processor is configured to read code from the memory and implement the method according to any one of claims 1 to 19.

21. A computer program product comprising computer-readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement the method according to any one of claims 1 to 19.

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