Feedback information transmission method, channel monitoring method and communication device

Abstract

Disclosed are a feedback information transmission method, a channel monitoring method and a communication device, the feedback information transmission method comprising: receiving a PDCCH, the PDCCH being used for scheduling PDSCHs of at least two cells, subcarrier intervals of at least N cells in the at least two cells being different, and receiving the PDSCHs of the at least two cells; sending a PUCCH (Physical Uplink Control Channel) in the first time slot, wherein the PUCCH comprises HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledgement) information of PDSCHs Wherein the first time slot is determined based on a second time slot, and the second time slot is a receiving time slot of the reference PDSCH; the reference PDSCH is a PDSCH in the PDSCHs of the at least two cells. By the adoption of the HARQ-ACK information feedback method and device, HARQ-ACK information feedback can be achieved when cells with different subcarrier intervals exist in at least two cells scheduled by one PDCCH.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a feedback information transmission method, a channel monitoring method and a communication device. Background Art

[0002] The multi-cell scheduling method means that a network device (such as a base station) can schedule a terminal device to receive or send on multiple cells through a physical downlink control channel (PDCCH), for example, through a downlink control information (DCI) for scheduling the transmission of the physical downlink shared channel (PDSCH) of multiple cells. At present, the subcarrier spacing of multiple cells scheduled by a PDCCH is the same. In other words, the length of a time slot of the multiple cells is the same. However, in actual network deployment, the subcarrier spacing of different cells in the carrier aggregation (CA) scenario may be different. Therefore, there may be cells with different subcarrier spacings among multiple cells scheduled by a DCI. How to perform HARQ-ACK information feedback when there are cells with different subcarrier spacings among multiple cells scheduled by a DCI is an urgent problem to be solved. Summary of the invention

[0003] The embodiments of the present application provide a feedback information transmission method, a channel monitoring method and a communication device, which can realize HARQ-ACK information feedback when there are cells with different subcarrier intervals in at least two cells scheduled by a PDCCH.

[0004] In a first aspect, an embodiment of the present application provides a feedback information transmission method, the method comprising:

[0005] Receiving a physical downlink control channel PDCCH, where the PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where subcarrier spacings of at least N cells of the at least two cells are different, and N is a positive integer greater than or equal to 2;

[0006] Receiving PDSCHs of the at least two cells;

[0007] Sending a physical uplink control channel PUCCH in a first time slot, where the PUCCH includes hybrid automatic repeat request confirmation HARQ-ACK information of the PDSCHs of the at least two cells;

[0008] The first time slot is determined based on the second time slot, and the second time slot is a reception time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells.

[0009] Based on the description of the first aspect, when there are cells with different subcarrier spacings among at least two cells scheduled by a PDCCH, the terminal device can use the PDSCH in the PDSCHs of the at least two cells as a reference PDSCH, and determine the first time slot for feedback of HARQ-ACK information based on the second time slot of receiving the reference PDSCH, thereby realizing HARQ-ACK information feedback when there are cells with different subcarrier spacings among at least two cells scheduled by a PDCCH.

[0010] In a possible implementation manner, the reference PDSCH is a PDSCH of a cell having the largest subcarrier spacing among the at least two cells; or,

[0011] The reference PDSCH is the PDSCH of a cell having the smallest subcarrier spacing among the at least two cells.

[0012] By implementing this method, the PDSCH of the cell with the largest subcarrier spacing or the smallest subcarrier spacing among at least two cells can be used as the reference PDSCH, so as to accurately determine the time slot for feeding back HARQ-ACK information.

[0013] In a possible implementation manner, the reference PDSCH is a PDSCH of a cell having a largest cell index value among the at least two cells; or,

[0014] The reference PDSCH is the PDSCH of the cell with the smallest cell index value among the at least two cells.

[0015] By implementing this method, the PDSCH of the cell with the largest or smallest cell index value among at least two cells can be used as a reference PDSCH, thereby accurately determining the time slot for feeding back HARQ-ACK information.

[0016] In a possible implementation manner, the reference PDSCH is a PDSCH having the latest reception end time among the PDSCHs of the at least two cells.

[0017] By implementing this method, the PDSCH with the latest reception end time can be used as the reference PDSCH, so as to facilitate determining the time slot for feeding back HARQ-ACK information when there are cells with different subcarrier spacings among at least two cells scheduled by a PDCCH.

[0018] In a possible implementation, if the PDSCH with the latest reception end time among the PDSCHs of the at least two cells includes PDSCHs of M cells, and subcarrier spacings of at least K cells among the M cells are different,

[0019] Then the reference PDSCH is the PDSCH of the cell with the largest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest cell index value among the M cells, or the reference PDSCH is the PDSCH of the cell with the largest cell index value among the M cells;

[0020] Among them, 2≤K≤M, and M and K are positive integers.

[0021] By implementing this method, when there are cells with different subcarrier spacings in the PDSCHs of the M cells with the latest reception end times, the reference PDSCH can be determined by the subcarrier spacing or the cell index value, thereby accurately and uniquely determining the time slot for feedback of the HARQ-ACK information.

[0022] In a possible implementation, the index number of the first time slot is n+k, where n is used to index the last uplink time slot that overlaps with the second time slot, and k represents a time slot offset.

[0023] By implementing this method, the first time slot for feeding back HARQ-ACK information can be determined by the last uplink time slot overlapping with the second time slot and the time slot offset, which is compatible with the existing method for determining the time slot for feeding back HARQ-ACK information.

[0024] In a second aspect, an embodiment of the present application provides a feedback information transmission method, the method comprising:

[0025] Sending a physical downlink control channel PDCCH, where the PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where subcarrier spacings of at least N cells of the at least two cells are different, and N is a positive integer greater than or equal to 2;

[0026] Sending the PDSCHs of the at least two cells;

[0027] Receiving a physical uplink control channel PUCCH in a first time slot, wherein the PUCCH includes hybrid automatic repeat request confirmation HARQ-ACK information of the PDSCHs of the at least two cells;

[0028] The first time slot is determined based on the second time slot, and the second time slot is a reception time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells.

[0029] In a possible implementation manner, the reference PDSCH is a PDSCH of a cell having the largest subcarrier spacing among the at least two cells; or,

[0030] The reference PDSCH is the PDSCH of a cell having the smallest subcarrier spacing among the at least two cells.

[0031] In a possible implementation manner, the reference PDSCH is a PDSCH of a cell having a largest cell index value among the at least two cells; or,

[0032] The reference PDSCH is the PDSCH of the cell with the smallest cell index value among the at least two cells.

[0033] In a possible implementation manner, the reference PDSCH is a PDSCH having the latest reception end time among the PDSCHs of the at least two cells.

[0034] In a possible implementation, if the PDSCH with the latest reception end time among the PDSCHs of the at least two cells includes PDSCHs of M cells, subcarrier spacings of at least K cells among the M cells are different;

[0035] The reference PDSCH is the PDSCH of the cell with the largest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest cell index value among the M cells, or the reference PDSCH is the PDSCH of the cell with the largest cell index value among the M cells;

[0036] Among them, 2≤K≤M, and M and K are positive integers.

[0037] In a possible implementation, the index number of the first time slot is n+k, where n is used to index the last uplink time slot that overlaps with the second time slot, and k represents a time slot offset.

[0038] The beneficial effects of the second aspect and various optional implementations of the second aspect can refer to the beneficial effects of the first aspect and various optional implementations of the first aspect, and will not be repeated here.

[0039] In a third aspect, an embodiment of the present application provides a channel monitoring method, the method comprising:

[0040] Monitoring a first physical downlink control channel PDCCH in a first cell, where the first PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where the at least two cells include the second cell;

[0041] Monitoring a second PDCCH in the second cell, where the second PDCCH is used to schedule a PDSCH in the second cell;

[0042] The PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by a reference cell, and the reference cell is the first cell or the second cell.

[0043] Based on the description of the third aspect, a first PDCCH for scheduling multiple cells (i.e., multi-carrier scheduling) is sent on a first cell, and a second PDCCH for self-carrier scheduling is sent on a second cell. The multiple cells include the second cell. In other words, there are multiple scheduling cells for the scheduled second cell. An embodiment of the present application provides a method for determining the upper limit of PDCCH monitoring in a scenario where there are multiple scheduling cells in the scheduled cell.

[0044] In a possible implementation manner, the reference cell is the first cell, and the PDCCH monitoring upper limit of the first cell is the PDCCH monitoring upper limit supported by the first cell.

[0045] When this method is implemented, the reference cell is the first cell, and the PDCCH monitoring upper limit supported by the first cell can be used as the PDCCH monitoring upper limit of the first cell, that is, the PDCCH monitoring upper limit supported by the first cell is directly determined as the PDCCH monitoring upper limit of the first cell.

[0046] In a possible implementation manner, the reference cell is the first cell, and the PDCCH monitoring upper limit of the second cell is the PDCCH monitoring upper limit supported by the second cell.

[0047] When implementing this method, the reference cell is the first cell, and the PDCCH monitoring upper limit supported by the second cell can be used as the PDCCH monitoring upper limit of the second cell, thereby providing a method for determining the PDCCH monitoring upper limit in a scenario where there are multiple scheduling cells in the second cell.

[0048] In a possible implementation manner, the reference cell is the second cell, and the sum of the PDCCH monitoring upper limit of the first cell and the PDCCH monitoring upper limit of the second cell is the PDCCH monitoring upper limit supported by the second cell.

[0049] When this method is implemented, the reference cell is the second cell, and the PDCCH monitoring upper limit supported by the second cell can be distributed to the first cell and the second cell, thereby facilitating the determination of the PDCCH monitoring upper limit in a scenario where there are multiple scheduling cells in the scheduled second cell.

[0050] In one possible implementation, the PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by the second cell and a first ratio, and the PDCCH monitoring upper limit of the second cell is determined based on the PDCCH monitoring upper limit supported by the second cell and a second ratio, the sum of the first ratio and the second ratio is 1, and the first ratio and the second ratio are both less than 1.

[0051] The PDCCH monitoring upper limit of the first cell can be determined by the PDCCH monitoring upper limit supported by the second cell and the first ratio, and the PDCCH monitoring upper limit of the second cell can be determined by the PDCCH monitoring upper limit supported by the second cell and the second ratio, that is, allocation is performed in a proportional manner, which is convenient for determining the PDCCH monitoring upper limit of the scheduled second cell in the scenario where there are multiple scheduling cells.

[0052] In a possible implementation manner, if the search space of the first PDCCH is configured on the first cell, and the search space of the first PDCCH is configured on the second cell, and the search space identifier of the first cell is the same as the search space identifier of the second cell, then the reference cell is the second cell; or,

[0053] If the search space of the first PDCCH is configured on the first cell and the search space of the first PDCCH is not configured on a cell other than the first cell among the at least two cells, the reference cell is the first cell.

[0054] By implementing this method, the reference cell in the first cell and the second cell can be accurately determined, thereby facilitating determination of the upper limit of PDCCH monitoring of the first cell and the second cell.

[0055] In a fourth aspect, an embodiment of the present application provides a communication device, the communication device comprising:

[0056] A receiving unit, configured to receive a physical downlink control channel PDCCH, where the PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where at least N of the at least two cells have different subcarrier spacings, where N is a positive integer greater than or equal to 2;

[0057] The receiving unit is further configured to receive the PDSCHs of the at least two cells;

[0058] A sending unit, configured to send a physical uplink control channel PUCCH in a first time slot, wherein the PUCCH includes hybrid automatic repeat request confirmation HARQ-ACK information of the PDSCHs of the at least two cells;

[0059] The first time slot is determined based on the second time slot, and the second time slot is a reception time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells.

[0060] In a fifth aspect, an embodiment of the present application provides a communication device, the communication device comprising:

[0061] A sending unit, configured to send a physical downlink control channel PDCCH, where the PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where subcarrier spacings of at least N cells of the at least two cells are different, and N is a positive integer greater than or equal to 2;

[0062] The sending unit is further used to send the PDSCH of the at least two cells;

[0063] A receiving unit, configured to receive a physical uplink control channel PUCCH in a first time slot, wherein the PUCCH includes hybrid automatic repeat request confirmation HARQ-ACK information of the PDSCHs of the at least two cells;

[0064] The first time slot is determined based on the second time slot, and the second time slot is a reception time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells.

[0065] In a possible implementation manner of the fourth aspect or the fifth aspect, the reference PDSCH is a PDSCH of a cell with the largest subcarrier spacing among the at least two cells; or,

[0066] The reference PDSCH is the PDSCH of a cell having the smallest subcarrier spacing among the at least two cells.

[0067] In a possible implementation manner of the fourth aspect or the fifth aspect, the reference PDSCH is a PDSCH of a cell with a largest cell index value among the at least two cells; or,

[0068] The reference PDSCH is the PDSCH of the cell with the smallest cell index value among the at least two cells.

[0069] In a possible implementation manner of the fourth aspect or the fifth aspect, the reference PDSCH is the PDSCH with the latest reception end time among the PDSCHs of the at least two cells.

[0070] In a possible implementation manner of the fourth aspect or the fifth aspect, if the PDSCH with the latest reception end time among the PDSCHs of the at least two cells includes PDSCHs of M cells, and subcarrier spacings of at least K cells among the M cells are different,

[0071] Then the reference PDSCH is the PDSCH of the cell with the largest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest cell index value among the M cells, or the reference PDSCH is the PDSCH of the cell with the largest cell index value among the M cells;

[0072] Among them, 2≤K≤M, and M and K are positive integers.

[0073] In a possible implementation of the fourth aspect or the fifth aspect, the index number of the first time slot is n+k, the n is used to index the last uplink time slot that overlaps with the second time slot, and the k represents the time slot offset.

[0074] In a sixth aspect, an embodiment of the present application provides a communication device, the communication device comprising:

[0075] A first monitoring unit, configured to monitor a first physical downlink control channel PDCCH in a first cell, where the first PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where the at least two cells include a second cell;

[0076] A second monitoring unit, configured to monitor a second PDCCH in the second cell, where the second PDCCH is used to schedule a PDSCH of the second cell;

[0077] The PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by a reference cell, and the reference cell is the first cell or the second cell.

[0078] In a possible implementation manner, the reference cell is the first cell, and the PDCCH monitoring upper limit of the first cell is the PDCCH monitoring upper limit supported by the first cell.

[0079] In a possible implementation manner, the reference cell is the first cell, and the PDCCH monitoring upper limit of the second cell is the PDCCH monitoring upper limit supported by the second cell.

[0080] In a possible implementation manner, the reference cell is the second cell, and the sum of the PDCCH monitoring upper limit of the first cell and the PDCCH monitoring upper limit of the second cell is the PDCCH monitoring upper limit supported by the second cell.

[0081] In one possible implementation, the PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by the second cell and a first ratio, and the PDCCH monitoring upper limit of the second cell is determined based on the PDCCH monitoring upper limit supported by the second cell and a second ratio, the sum of the first ratio and the second ratio is 1, and the first ratio and the second ratio are both less than 1.

[0082] In a possible implementation manner, if the search space of the first PDCCH is configured on the first cell, and the search space of the first PDCCH is configured on the second cell, and the search space identifier of the first cell is the same as the search space identifier of the second cell, then the reference cell is the second cell; or,

[0083] If the search space of the first PDCCH is configured on the first cell and the search space of the first PDCCH is not configured on a cell other than the first cell among the at least two cells, the reference cell is the first cell.

[0084] In the seventh aspect, an embodiment of the present application provides a communication device, which includes a processor and a memory, the processor and the memory are interconnected, the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the method as described in the first aspect or any optional embodiment of the first aspect, or to execute the method as described in the second aspect or any optional embodiment of the second aspect, or to execute the method as described in the third aspect or any optional embodiment of the third aspect.

[0085] In an eighth aspect, an embodiment of the present application provides a chip, comprising a processor and an interface, wherein the processor and the interface are coupled; the interface is used to receive and / or output signals, and the processor is used to execute code instructions to execute the method described in the first aspect or any optional embodiment of the first aspect, or to execute the method described in the second aspect or any optional embodiment of the second aspect, or to execute the method described in the third aspect or any optional embodiment of the third aspect.

[0086] In the ninth aspect, an embodiment of the present application provides a module device, which includes a communication module, a power module, a storage module and a chip module, wherein: the power module is used to provide power to the module device; the storage module is used to store data and / or instructions; the communication module communicates with an external device; the chip module is used to call the data and / or instructions stored in the storage module, and in combination with the communication module, execute the method as described in the first aspect or any optional embodiment of the first aspect, or execute the method as described in the second aspect or any optional embodiment of the second aspect, or execute the method as described in the third aspect or any optional embodiment of the third aspect.

[0087] In the tenth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program includes program instructions. When the computer executes the program instructions, it implements the method as described in the first aspect or any optional embodiment of the first aspect, or implements the method as described in the second aspect or any optional embodiment of the second aspect, or implements the method as described in the third aspect or any optional embodiment of the third aspect.

[0088] In the eleventh aspect, an embodiment of the present application provides a computer program product, which includes a computer program or a computer code, and when the computer program product is run on a computer, it is used to implement the method described in the first aspect or any optional embodiment of the first aspect, or to implement the method described in the second aspect or any optional embodiment of the second aspect, or to implement the method described in the third aspect or any optional embodiment of the third aspect.

[0089] In a twelfth aspect, an embodiment of the present application provides a communication system, which includes a terminal device and a network device. BRIEF DESCRIPTION OF THE DRAWINGS

[0090] Figure 1a It is a structural diagram of a communication system provided in an embodiment of the present application;

[0091] Figure 1b is a schematic diagram of multi-cell scheduling provided in an embodiment of the present application;

[0092] Figure 1c is a schematic diagram of another multi-cell scheduling provided in an embodiment of the present application;

[0093] Figure 1d is a schematic diagram of another multi-cell scheduling provided in an embodiment of the present application;

[0094] Figure 1e is a schematic diagram of a search space configuration provided in an embodiment of the present application;

[0095] Figure 1f is another schematic diagram of search space configuration provided in an embodiment of the present application;

[0096] Figure 2a It is a flowchart of a feedback information transmission method provided in an embodiment of the present application;

[0097] Figure 2b is a schematic diagram of multi-cell scheduling provided in an embodiment of the present application;

[0098] Figure 3a It is a flow chart of a channel monitoring method provided in an embodiment of the present application;

[0099] Figure 3b This is a schematic diagram of PDSCH scheduling provided by an embodiment of the present application;

[0100] Figure 3c This is another PDSCH scheduling schematic diagram provided in an embodiment of the present application;

[0101] Figure 3d This is another PDSCH scheduling schematic diagram provided in an embodiment of the present application;

[0102] Figure 4 is a structural diagram of a communication device provided in an embodiment of the present application;

[0103] Figure 5 is a structural diagram of another communication device provided in an embodiment of the present application;

[0104] Figure 6 is a structural diagram of another communication device provided in an embodiment of the present application;

[0105] Figure 7 It is a structural schematic diagram of a module device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0106] In the embodiments of the present application, unless otherwise specified, the character " / " indicates that the objects before and after the association are in an or relationship. For example, A / B can represent A or B. "And / or" describes the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone.

[0107] It should be pointed out that the words "first", "second", etc. involved in the embodiments of the present application are only used to distinguish the description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, nor can they be understood as indicating or implying order.

[0108] In the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. In addition, "at least one of the following" or similar expressions refers to any combination of these items, which may include any combination of single items or plural items. For example, at least one of A, B, or C may represent: A, B, C, A and B, A and C, B and C, or A, B and C. Among them, each of A, B, and C may be an element itself, or a set containing one or more elements.

[0109] In the embodiments of the present application, "exemplary", "in some embodiments", "in another embodiment", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0110] In the embodiments of the present application, "of", "corresponding", and "corresponding" can sometimes be used interchangeably. It should be noted that when the distinction between them is not emphasized, the meanings to be expressed are consistent. In the embodiments of the present application, communication and transmission can sometimes be used interchangeably. It should be noted that when the distinction between them is not emphasized, the meanings to be expressed are consistent. For example, transmission can include sending and / or receiving, which can be a noun or a verb.

[0111] The equal to involved in the embodiments of the present application can be used in conjunction with greater than, and is applicable to the technical solution adopted when greater than, and can also be used in conjunction with less than, and is applicable to the technical solution adopted when less than. It should be noted that when equal to is used in conjunction with greater than, it cannot be used in conjunction with less than; when equal to is used in conjunction with less than, it cannot be used in conjunction with greater than.

[0112] See also Figure 1a , Figure 1a is a schematic diagram of the structure of a communication system provided in an embodiment of the present application. The communication system may include but is not limited to one or more network devices, one or more terminal devices, such as Figure 1a Take a network device 101 and a terminal device 102 as an example, where: Figure 1a The network device 101 in the figure takes a base station as an example, and the terminal device 102 takes a mobile phone as an example. The terminal device 102 can establish a wireless link with the network device 101 to communicate. Figure 1a The communication system shown includes but is not limited to network equipment and terminal equipment, and may also include other communication equipment. Figure 1a The number and form of the devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of the present application.

[0113] In the embodiments of the present application, the terminal device is a device with wireless transceiver functions, which can be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc. The terminal device can be fixed or mobile. It should be noted that the terminal device can support at least one wireless communication technology, such as long term evolution (LTE), new radio (NR), etc. For example, the terminal device may be a mobile phone, a tablet computer (pad), a desktop computer, a laptop computer, an all-in-one computer, a vehicle-mounted terminal, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a wearable device, a terminal device in a future mobile communication network, or a terminal device in a future evolved public mobile land network (PLMN), etc. In some embodiments of the present application, the terminal device may also be a device with transceiver functions, such as a chip system, wherein the chip system may include a chip and may also include other discrete devices.

[0114] In the embodiment of the present application, the network device is a device that provides wireless communication functions for the terminal device, and can also be referred to as an access network device, a radio access network (RAN) device, etc. Among them, the network device can support at least one wireless communication technology, such as LTE, NR, etc. For example, the network device includes but is not limited to: the next generation base station (generation nodeB, gNB) in the fifth generation mobile communication system (5th-generation, 5G), the base station in the sixth generation mobile communication system (6th-generation, 6G), the evolved node B (evolved node B, eNB), the radio network controller (radio network controller, RNC), the node B (node ​​B, NB), the base station controller (base station controller, BSC), the base transceiver station (base transceiver station, BTS), the home base station (for example, home evolved node B, or home node B, HNB), the baseband unit (baseband unit, BBU), the transmitting and receiving point (transmitting and receiving point, TRP), the transmitting point (transmitting point, TP), the mobile switching center, etc. The network device may also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the network device may be a relay station, an access point, a vehicle-mounted device, a terminal device, a wearable device, and a network device in future mobile communications or a network device in a future evolving PLMN. In some embodiments, the network device may also be a device having a wireless communication function for a terminal device, such as a chip system. For example, the chip system may include a chip and may also include other discrete devices.

[0115] Some terms involved in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

[0116] 1. Self-carrier scheduling

[0117] Self-carrier scheduling means that the data transmission of a cell is scheduled by a physical downlink control channel (PDCCH) on the cell. In other words, downlink control information (DCI) used to schedule the data transmission of the cell is carried by the PDCCH on the cell.

[0118] 2. Cross-carrier scheduling

[0119] Cross-carrier scheduling means that the data transmission of a cell can be scheduled by the PDCCH on another cell. In other words, the DCI used to schedule the data transmission of the cell can be carried by the PDCCH on another cell.

[0120] 3. Multi-carrier scheduling (also called multi-cell scheduling)

[0121] Multi-cell scheduling refers to the base station scheduling terminal devices to receive or send on multiple cells through scheduling signaling (such as DCI), that is, one DCI is used to schedule the physical uplink shared channel (PDSCH) / physical uplink shared channel (PUSCH) of multiple cells. In other words, one DCI can indicate the scheduling information of multiple cells. The multi-cell scheduling method can also be called a multi-carrier scheduling method, a multi-cell scheduling mechanism or a multi-carrier scheduling mechanism. The multiple scheduled cells can be called co-scheduled cells or co-scheduled cells, etc.

[0122] 4. DCI format for multi-cell scheduling

[0123] DCI format 0_3 and DCI format 1_3 can schedule PUSCH or PDSCH of multiple cells with one DCI. DCI format 0_3 is used to schedule PUSCH of multiple cells and schedule different transport blocks (TB) of different cells. DCI format 1_3 is used to schedule PDSCH of multiple cells and schedule different TB of different cells. DCI format 0_3 and DCI format 1_3 can schedule up to 4 cells at the same time. A multi-cell scheduling set refers to a set of multiple cells, and the cells in this set can be scheduled simultaneously by one DCI.

[0124] 5. PDCCH monitoring upper limit

[0125] The upper limit of PDCCH monitoring in the embodiment of the present application may include the upper limit of the number of monitored PDCCH candidates and / or the upper limit of the number of non-overlapping control channel elements (Control-Channel Element, CCE) monitored. Among them, the upper limit of the number of PDCCH candidates is also called the upper limit of blind detection (Blind detection, BD) times, which can be called BD buget. The upper limit of the number of non-overlapping CCEs can be called non-overlapping CCE buget. The following examples illustrate the method for determining the upper limit of the number of monitored PDCCH candidates and the method for determining the upper limit of the number of non-overlapping CCEs monitored.

[0126] Table 1 gives the maximum number of PDCCH candidates that a terminal device can monitor in a time slot in a single cell. Should Related to the subcarrier spacing μ.

[0127]

[0128] Table 1

[0129] Table 2 gives the maximum number of non-overlapping CCEs that a terminal device monitors in a time slot in a single cell. Should Related to the subcarrier spacing μ.

[0130]

[0131] Table 2

[0132] In some implementations, the network device configures the terminal device with Downlink cells, among which, is the number of downlink cells that do not support m-TRP, The maximum number of cells that support m-TRP. The PDCCH blind detection and non-overlapping CCE detection capabilities of downlink cells, that is, the capability of the terminal equipment is

[0133] if μ is SCS, γ is a constant, that is, the total number of downlink cells configured by the network device is less than or equal to the capacity of the terminal device, and the upper limit of the total number of PDCCH candidates monitored by the terminal device in a time slot on the activated downlink bandwidth part (Band Width, BW) of a downlink cell with SCS of μ And the upper limit of the total number of non-overlapping CCEs as follows:

[0134] If the downlink cell does not support m-TRP The cell in the downlink cell,

[0135] If the downlink cell is one that supports m-TRP The cell in the downlink cell, Among them, γ is a constant.

[0136] if That is, the total number of downlink cells configured by the network device is greater than the capacity of the terminal device. The upper limit of the total number of PDCCH candidates monitored by the terminal device in a time slot on the activated downlink BW of a downlink cell with an SCS of μ And the upper limit of the total number of non-overlapping CCEs as follows:

[0137]

[0138] in, is the number of downlink cells supported by the terminal device, The upper limit of the number of PDCCH candidates monitored in a time slot in a downlink cell with an SCS of μ is is the number of downlink cells that do not support m-TRP and have a subcarrier spacing of μ, is the number of cells supporting m-TRP and SCS is μ, γ is a constant, and j is used to represent the subcarrier spacing.

[0139]

[0140] in, is the number of downlink cells supported by the terminal device, is the upper limit of the number of non-overlapping CCEs monitored in a time slot in a downlink cell with an SCS of μ. is the number of downlink cells with SCS μ and not supporting m-TRP, is the number of cells with SCS μ and supporting m-TRP, γ is a constant, and j is used to represent the subcarrier spacing.

[0141] The above examples illustrate as well as The calculation method of and May not be equal, and They may also be unequal, as the protocol states:

[0142] If the downlink cell is a downlink cell that does not support m-TRP, the upper limit of the number of PDCCH candidates monitored in each time slot of the downlink cell is: The upper limit of the number of non-overlapping CCEs monitored in each time slot of the downlink cell is:

[0143] If the downlink cell is a downlink cell that supports m-TRP, the upper limit of the number of PDCCH candidates monitored in each time slot of the downlink cell is: The upper limit of the number of non-overlapping CCEs monitored in each time slot of the downlink cell is: γ is a constant.

[0144] 6. Counting of PDCCH candidates and non-overlapping CCEs in multi-cell scheduling

[0145] PDCCH is located in the scheduling cell, so the terminal device monitors PDCCH in the scheduling cell. The PDCCH can schedule multiple cells, and the multiple cells can be called scheduled cells. It can be understood that the multiple cells can include the scheduling cell.

[0146] The terminal device monitors PDCCH in the scheduling cell. The number of blind detections of PDCCH (also known as the number of PDCCH candidates) and the number of non-overlapping CCEs are counted on the reference cell, that is, the upper limit of BD times / the upper limit of the number of non-overlapping CCEs is determined based on the subcarrier spacing of the reference cell. The number of monitored PDCCH candidates does not exceed the upper limit of the number of PDCCH candidates of the reference cell, and the number of monitored non-overlapping CCEs does not exceed the upper limit of the number of non-overlapping CCEs of the reference cell.

[0147] The reference cell is a scheduling cell or a scheduled cell. The following example illustrates a method for determining the reference cell.

[0148] If the search space of PDCCH is only configured in the scheduling cell, the scheduling cell is the reference cell. If the search space of PDCCH is configured in at most one scheduled cell in addition to the scheduling cell, and the search space identifier configured in the scheduling cell is the same as the search space identifier configured in the scheduled cell, then the scheduled cell is the reference cell.

[0149] Combine the following Figure 1e and Figure 1f For example, a PDCCH schedules CC1, CC2, CC3, and CC4, where CC1 is the scheduled cell. Figure 1e As shown, the search space of the PDCCH is only configured in CC1, so the reference cell is CC1. Please refer to Figure 1f As shown, the search space of the PDCCH is configured not only on CC1 but also on CC2, and CC2 is the reference cell.

[0150] The following example illustrates the feedback of Hybrid Automatic Repeatrequest-Acknowledgement (HARQ-ACK) information for multi-cell scheduling.

[0151] In one implementation, multiple cells scheduled by one DCI have the same subcarrier spacing. The following describes the HARQ-ACK feedback mechanism when multiple cells have the same subcarrier spacing, and one DCI is used to schedule the PDSCH of multiple cells:

[0152] The terminal device feeds back the HARQ-ACK information of the PDSCH of multiple cells in the PUCCH transmitted in the uplink time slot n+k. Among them, n is the last uplink time slot overlapping with the downlink time slot of receiving the reference PDSCH, that is, time slot n is used as a reference; k is indicated by the PDSCH-to-HARQ_feedback timing indicator field in DCI 1_3, which represents the time slot offset between the time slot of receiving the reference PDSCH and the time slot of sending the PUCCH, and k is based on the subcarrier spacing (SCS) of the uplink cell transmitting the PUCCH. Among them, the reference PDSCH refers to the PDSCH with the latest reception end position among the PDSCHs of multiple cells scheduled by a DCI.

[0153] The following example illustrates the determination of HARQ-ACK information feedback for multiple cells scheduled by a DCI:

[0154] For example, see Figure 1b As shown, one DCI schedules the PDSCH of two cells, and the format of the DCI may be DCI1_3. Figure 1b As shown, DCI schedules PDSCH 1 and PDSCH 2, PDSCH1 is the PDSCH of cell 1, and PDSCH2 is the PDSCH of cell 2. The SCS of cell 1 and cell 2 are both 15kHz, and the SCS of the cell transmitting PUCCH is 30kHz. According to the feedback determination mechanism of multi-carrier scheduling when the co-scheduled cells have the same SCS, PDSCH 2 is the PDSCH with the latest end position of multi-cell scheduling, and PDSCH 2 is the reference PDSCH, then time slot n is time slot 5, assuming k = 1, the terminal feeds back the HARQ-ACK information of PDSCH1 and PDSCH2 in time slot 6.

[0155] For another example, please refer to Figure 1c As shown, one DCI schedules the PDSCH of two cells, and the format of the DCI may be DCI1_3. Figure 1cAs shown, DCI schedules PDSCH 1 and PDSCH 2, PDSCH1 is the PDSCH of cell 1, and PDSCH2 is the PDSCH of cell 2. The SCS of cell 1 and cell 2 are both 15kHz, and the SCS of the cell transmitting PUCCH is also 15kHz. According to the feedback determination mechanism of multi-carrier scheduling when the co-scheduled cells have the same SCS, PDSCH1 and PDSCH2 are both the PDSCHs with the latest ending positions, and PDSCH 1 and PDSCH 2 are both reference PDSCHs. Then, time slot n is time slot 1. Assuming k=1, the terminal feeds back the HARQ-ACK information of PDSCH1 and PDSCH2 in time slot 2.

[0156] In the above description, the method for determining the time slot where the HARQ-ACK information is fed back in a DCI-scheduled multiple cell subcarriers are all the same SCS scenario is described. If there are cells with different subcarrier spacings among the multiple cells scheduled by a DCI, the above method for determining the time slot where the HARQ-ACK information is fed back is no longer applicable, and it is not convenient to accurately determine the time slot where the HARQ-ACK information is fed back. Figure 1d To explain:

[0157] For example, Figure 1d As shown, one DCI schedules the PDSCH of two cells, and the format of the DCI may be DCI 1_3. Figure 1d As shown, DCI schedules PDSCH 1 and PDSCH 2, PDSCH1 is the PDSCH of cell 1, and PDSCH2 is the PDSCH of cell 2. The SCS of cell 1 is 15kHz, the SCS of CC2 is 30kHz, and the SCS of the cell that transmits PUCCH is 30kHz. The reception end time of PDSCH1 and PDSCH2 is the same, that is, PDSCH1 and PDSCH2 can both be reference PDSCHs. If the reference PDSCH is PDSCH 1, K=1, the terminal device feeds back HARQ-ACK information in time slot 4; if the reference PDSCH is PDSCH 2, the terminal device feeds back HARQ-ACK information in time slot 3, and it is impossible to accurately determine the time slot where the feedback HARQ-ACK information is located.

[0158] To solve this problem, in the embodiments of the present application, the reference PDSCH can be further determined according to the cell index value or the cell subcarrier spacing. For example, the PDSCH of the cell with the largest cell index value or the smallest cell index value can be determined as the reference PDSCH. For another example, the PDSCH of the cell with the largest cell subcarrier spacing or the smallest subcarrier spacing can be determined as the reference PDSCH. For details, please refer to the description of the subsequent embodiments.

[0159] It should be noted that the various technical solutions (or embodiments) of the present application can be implemented independently or in combination based on certain internal connections. The present application is not limited thereto. In addition, the various terms and definitions between the various embodiments can be referenced to each other. In each embodiment of the present application, different implementations can also be implemented in combination or independently.

[0160] Please refer to Figure 2a , is a flow chart of a feedback information transmission method provided in an embodiment of the present application, such as Figure 2a As shown, the feedback information transmission method of this embodiment includes but is not limited to the following steps:

[0161] 101, a network device sends a PDCCH, where the PDCCH is used to schedule PDSCHs of at least two cells, where subcarrier spacings of at least N cells in the at least two cells are different, and N is a positive integer greater than or equal to 2. Correspondingly, a terminal device receives the PDCCH.

[0162] Among them, the different subcarrier spacings of N cells can be understood as the subcarrier spacings of the N cells are different from each other. In other words, there are N subcarrier spacings in the at least two cells, and N is a positive integer greater than or equal to 2. The number of cells scheduled by PDCCH is greater than or equal to the number of cells with different subcarrier spacings. For example, PDCCH is used to schedule PDSCH1 of cell 1, PDSCH2 of cell 2, and PDSCH3 of cell 3. The subcarrier spacings of cell 1 and cell 3 are both 15kHz, and the subcarrier spacing of cell 2 is 30kHz. There are two subcarrier spacings, that is, N=2, that is, the number of cells scheduled by PDCCH is greater than the value of N. For another example, PDCCH is used to schedule PDSCH1 of cell 1 and PDSCH2 of cell 2. The subcarrier spacing of cell 1 is 15kHz, and the subcarrier spacing of cell 2 is 30kHz, that is, the number of cells scheduled by PDCCH is equal to the value of N.

[0163] In some implementations, the PDCCH carries DCI, the DCI is used to schedule PDSCHs of at least two cells, and the format of the DCI is DCI format 1_3. DCI scheduling of PDSCHs of at least two cells can be understood as the DCI indicating scheduling information of the PDSCHs of the at least two cells, and the scheduling information includes but is not limited to the location of the time-frequency domain resources of the PDSCHs of the at least two cells, the modulation mode of the PDSCHs of the at least two cells, and the like. The terminal device receives the PDCCH and determines the scheduling information of the PDSCHs of the at least two cells according to the DCI carried in the PDCCH.

[0164] In some implementations, the at least two cells used for scheduling by the PDCCH may include the cell where the PDCCH is located, and the cell where the PDCCH is located is the scheduling cell, that is, the at least two cells may include the scheduling cell.

[0165] 102. The network device sends PDSCHs of at least two cells. Correspondingly, the terminal device receives PDSCHs of at least two cells.

[0166] The network device sends the PDSCH of at least two cells according to the scheduling information indicated by the PDCCH, and correspondingly, the terminal device can receive the PDSCH of the at least two cells according to the scheduling information indicated by the PDCCH. For example, if the PDCCH is used to schedule PDSCH1 of cell 1, PDSCH2 of cell 2, and PDSCH3 of cell 3, the terminal device receives PDSCH1 in cell 1, PDSCH2 in cell 2, and PDSCH3 in cell 3.

[0167] 103. The terminal device sends a PUCCH in the first time slot, where the PUCCH includes HARQ-ACK information of PDSCHs of at least two cells. Correspondingly, the network device receives the PUCCH in the first time slot.

[0168] The first time slot is determined based on the second time slot, and the second time slot is a receiving time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells mentioned above.

[0169] For example, PDCCH is used to schedule PDSCH1 of cell 1, PDSCH2 of cell 2, and PDSCH3 of cell 3, then PUCCH includes HARQ-ACK information of PDSCH1, HARQ-ACK information of PDSCH2, and HARQ-ACK information of PDSCH3.

[0170] The terminal device sends the PUCCH in the first time slot, and the first time slot may be determined based on the second time slot where the reference PDSCH is received. Specifically, the second time slot where the reference PDSCH is located may overlap with one or more uplink time slots of the cell where the PUCCH is located, so as to Figure 1d As shown, if the reference PDSCH is PDSCH1, then a time slot where PDSCH1 is located can overlap with two uplink time slots of the cell where PUCCH is located. If the reference PDSCH is PDSCH2, then a time slot where PDSCH2 is located overlaps with a time slot of the cell where PUCCH is located.

[0171] The index number of the last uplink time slot that coincides with the second time slot where the reference PDSCH is located is determined as n, that is, uplink time slot n. Figure 1dAs shown in the figure, if the reference PDSCH is PDSCH1, the second time slot where PDSCH1 is located coincides with uplink time slot 2 and uplink time slot 3, and the last uplink time slot 3 that coincides is determined as time slot n. The first time slot where PUCCH is located is time slot n+k, and k is used to characterize the time slot offset. The value of k can be indicated by the PDSCH-to-HARQ_feedback timingindicator field in DCI 1_3, indicating the time slot offset between the second time slot for receiving the reference PDSCH and the first time slot for sending the PUCCH, and k is based on the subcarrier spacing of the UL cell that transmits the PUCCH. For example, k=1, in Figure 1d In the example, if the reference PDSCH is PDSCH1, the time slot where the PUCCH is located is time slot 4; if the reference PDSCH is PDSCH2, the time slot where the PUCCH is located is time slot 3.

[0172] In an embodiment of the present application, when there are cells with different subcarrier spacings among at least two cells scheduled by a PDCCH, the terminal device may use the PDSCH in the PDSCHs of the at least two cells as a reference PDSCH, and determine the first time slot for feedback of HARQ-ACK information based on the second time slot of receiving the reference PDSCH, thereby realizing HARQ-ACK information feedback when there are cells with different subcarrier spacings among at least two cells scheduled by a PDCCH.

[0173] The following example illustrates how to determine the reference PDSCH:

[0174] Mode 1: A reference PDSCH may be determined from the PDSCHs of at least two cells according to the subcarrier spacing of at least two cells scheduled by the PDCCH. Exemplarily, the PDSCH of the cell with the largest subcarrier spacing or the smallest subcarrier spacing among the at least two cells may be used as the reference PDSCH.

[0175] For example, the PDSCH of the cell with the largest subcarrier spacing among at least two cells may be used as the reference PDSCH. Figure 2b For example, PDCCH is used to schedule PDSCH1 of cell 1 and PDSCH2 of cell 2. The subcarrier spacing of cell 1 is 15kHz, and the subcarrier spacing of cell 2 is 30kHz. The cell with the largest subcarrier spacing is cell 2, so PDSCH2 of cell 2 is the reference PDSCH. If k=1, the first time slot where PUCCH is located is time slot 5.

[0176] For another example, the PDSCH of the cell with the smallest subcarrier spacing among at least two cells may be used as the reference PDSCH. Figure 2bAs an example, PDCCH is used to schedule PDSCH1 of cell 1 and PDSCH2 of cell 2. The subcarrier spacing of cell 1 is 15kHz, and the subcarrier spacing of cell 2 is 30kHz. The cell with the smallest subcarrier spacing is cell 1, so PDSCH1 of cell 1 is the reference PDSCH. If k=1, the first time slot where PUCCH is located is time slot 4.

[0177] Mode 2: A reference PDSCH may be determined from the PDSCHs of at least two cells according to the cell index values ​​of at least two cells scheduled by the PDCCH. For example, the PDSCH of the cell with the largest cell index value or the smallest cell index value among the at least two cells may be used as the reference PDSCH.

[0178] For example, the PDSCH of the cell with the largest cell index value among at least two cells may be used as the reference PDSCH. Figure 2b As an example, PDCCH is used to schedule PDSCH1 of cell 1 and PDSCH2 of cell 2. Since the cell index value of cell 2 is the largest, the reference PDSCH is PDSCH2 of cell 2. If k=1, the first time slot where PUCCH is located is time slot 5.

[0179] For another example, the PDSCH of the cell with the smallest cell index value among at least two cells may be used as the reference PDSCH. Figure 2b As an example, PDCCH is used to schedule PDSCH1 of cell 1 and PDSCH2 of cell 2. Since the cell index value of cell 1 is the smallest, the reference PDSCH is PDSCH1 of cell 1. If k=1, the first time slot where PUCCH is located is time slot 4.

[0180] Mode 3: The reference PDSCH may be determined from the PDSCHs of at least two cells according to the reception end time of the PDSCHs of at least two cells scheduled by the PDCCH. Alternatively, the PDSCH of the cell with the latest reception end time among the PDSCHs of at least two cells may be used as the reference PDSCH.

[0181] For example, the PDSCH with the latest reception end time among the PDSCHs of at least two cells may be used as the reference PDSCH. Figure 2b As an example, PDCCH is used to schedule PDSCH1 of cell 1 and PDSCH2 of cell 2. Since the reception end time of PDSCH2 is the latest, PDSCH2 of cell 2 is used as the reference PDSCH. If k=1, the first time slot where PUCCH is located is time slot 5.

[0182] Exemplarily, the PDSCH with the latest reception end time among the PDCCHs of at least two cells scheduled by the PDCCH includes the PDSCHs of M cells, and the subcarrier spacings of at least K cells among the M cells are different, wherein 2≤K≤M, and M and K are positive integers. The PDSCH with the latest reception end time includes the PDSCHs of M cells, which can be understood as the PDSCHs of the M cells are the PDSCHs with the latest reception end time among the PDSCHs of at least two cells scheduled by the PDCCH, and the reception end time of the PDSCHs of the M cells is the same. Figure 1d As shown, taking M=K=2 as an example, the PDSCH with the latest reception end time includes PDSCHs of two cells, and the subcarrier spacings of the PDSCHs of the two cells are different. In other words, the lengths of one time slot of the two cells are different.

[0183] In one implementation of determining a reference PDSCH, the reference PDSCH may be determined based on the subcarrier spacing of the M cells. For example, the PDSCH of the cell with the largest subcarrier spacing among the M cells may be used as the reference PDSCH, or the PDSCH of the cell with the smallest subcarrier spacing among the M cells may be used as the reference PDSCH. Figure 1d For example, if the PDSCH of the cell with the largest subcarrier spacing is used as the reference PDSCH, the reference PDSCH is PDSCH2 of cell 2, and if k=1, the first time slot where the PUCCH is located is time slot 3. If the PDSCH of the cell with the smallest subcarrier spacing is used as the reference PDSCH, the reference PDSCH is PDSCH1 of cell 1, and if k=1, the first time slot where the PUCCH is located is time slot 4.

[0184] Another implementation method for determining the reference PDSCH is to determine the reference PDSCH according to the cell index values ​​of the M cells. For example, the PDSCH of the cell with the largest cell index value among the M cells can be used as the reference PDSCH, or the PDSCH of the cell with the smallest cell index value among the M cells can be used as the reference PDSCH. Figure 1d For example, if the PDSCH of the cell with the largest cell index value is used as the reference PDSCH, the reference PDSCH is PDSCH2 of cell 2, and if k=1, the first time slot where the PUCCH is located is time slot 3. If the PDSCH of the cell with the smallest cell index value is used as the reference PDSCH, the reference PDSCH is PDSCH1 of cell 1, and if k=1, the first time slot where the PUCCH is located is time slot 4.

[0185] Please refer to Figure 3a , is a flow chart of a channel monitoring method provided in an embodiment of the present application, such as Figure 3aAs shown, the channel monitoring method of this embodiment includes but is not limited to the following steps:

[0186] 201. Monitor a first PDCCH in a first cell, where the first PDCCH is used to schedule PDSCHs of at least two cells, where the at least two cells include a second cell.

[0187] 202 : Monitor a second PDCCH in a second cell, where the second PDCCH is used to schedule a PDSCH of the second cell.

[0188] Exemplarily, the PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by a reference cell, and the reference cell is the first cell or the second cell.

[0189] The terminal device monitors the first PDCCH in the first cell. The PDCCH monitoring upper limit of the first cell may include the upper limit of the number of PDCCH candidates monitored by the terminal device in the first cell (also referred to as the upper limit of BD times in the first cell) and / or the upper limit of the number of non-overlapping CCEs monitored in the first cell.

[0190] The terminal device monitors the second PDCCH in the second cell. The PDCCH monitoring upper limit of the second cell may include the upper limit of the number of PDCCH candidates monitored by the terminal device in the second cell (also referred to as the upper limit of BD times in the second cell) and / or the upper limit of the number of non-overlapping CCEs monitored in the second cell.

[0191] In the embodiment of the present application, the second cell is scheduled by both the first PDCCH of the first cell and the second PDCCH of the second cell. The DCI format carried in the first PDCCH can be DCI format 1_3, that is, the DCI carried in the first PDCCH is used to schedule multiple cells. The DCI format carried in the second PDCCH can be DCI format 1_1, and the DCI carried in the second PDCCH is used for self-carrier scheduling. Figure 3b As shown, the first PDCCH on cell 1 carries DCI1, which can schedule PDSCH1 of cell 1 and PDSCH2 of cell 2. The second PDCCH on cell 2 carries DCI2, which performs self-carrier scheduling, that is, schedules cell 2.

[0192] The following example describes a method for determining the upper limit of the PDCCH monitoring of the first cell and the upper limit of the PDCCH monitoring of the second cell when the reference cell is the first cell or the second cell:

[0193] Case 1: the reference cell is the first cell.

[0194] When the reference cell is the first cell, the PDCCH monitoring upper limit of the first cell is the PDCCH monitoring upper limit supported by the first cell.

[0195] In one implementation, the upper limit of PDCCH monitoring is the upper limit of the number of PDCCH candidates monitored by the terminal device, and the upper limit of the number of PDCCH candidates monitored by the terminal device in the first cell is the upper limit of the number of PDCCH candidates supported by the first cell.

[0196] If the first cell is a cell that does not support m-TRP, the upper limit of the number of PDCCH candidates supported by the first cell is in, The upper limit of the number of PDCCH candidates of a single cell is determined based on the time slot slot1 of the first cell and the subcarrier spacing μ1 of the first cell. It is the upper limit of the total number of PDCCH candidates of at least one cell with the same subcarrier spacing determined based on the time slot slot1 of the first cell and the subcarrier spacing μ1 of the first cell. and The determination method of , please refer to the description of the above embodiment, which will not be repeated here. That is, if the first cell is a cell that does not support m-TRP, the terminal device cannot monitor more than , in each time slot of the first cell. PDCCH candidates.

[0197] If the first cell is a cell supporting m-TRP, the upper limit of the number of PDCCH candidates supported by the first cell is in, The upper limit of the number of PDCCH candidates of a single cell is determined based on the time slot slot1 of the first cell and the subcarrier spacing μ1 of the first cell. The upper limit of the total number of PDCCH candidates of at least one same SCS cell determined based on the time slot slot1 of the first cell and the subcarrier spacing μ1 of the first cell. and The determination method of , please refer to the description of the above embodiment, which will not be repeated here. That is, if the first cell is a cell supporting m-TRP, the terminal device cannot monitor more than PDCCH candidates.

[0198] In another implementation, the upper limit of PDCCH monitoring is the upper limit of the number of non-overlapping CCEs monitored by the terminal device, and the upper limit of the number of non-overlapping CCEs monitored by the terminal device in the first cell is the upper limit of the number of non-overlapping CCEs supported by the first cell.

[0199] If the first cell is a cell that does not support m-TRP, the upper limit of the number of non-overlapping CCEs supported by the first cell is in, It is the upper limit of the number of non-overlapping CCEs of a single cell determined based on the time slot slot1 of the first cell and the subcarrier spacing μ1 of the first cell. It is the upper limit of the total number of non-overlapping CCEs of at least one cell with the same subcarrier spacing determined based on the time slot slot1 of the first cell and the subcarrier spacing μ1 of the first cell. and The determination method of , please refer to the description of the above embodiment, which will not be repeated here. That is, if the first cell is a cell that does not support m-TRP, the terminal device cannot monitor more than , in each time slot of the first cell. non-overlapping CCEs.

[0200] If the first cell is a cell supporting m-TRP, the upper limit of the number of non-overlapping CCEs supported by the first cell is in, It is the upper limit of the number of non-overlapping CCEs of a single cell determined based on the time slot slot1 of the first cell and the subcarrier spacing μ1 of the first cell. The upper limit of the total number of non-overlapping CCEs of at least one same SCS cell is determined based on the time slot slot1 of the first cell and the subcarrier spacing μ1 of the first cell. and The determination method of , please refer to the description of the above embodiment, which will not be repeated here. That is, if the first cell is a cell supporting m-TRP, the terminal device cannot monitor more than non-overlapping CCEs.

[0201] When the reference cell is the first cell, the PDCCH monitoring upper limit of the second cell is the PDCCH monitoring upper limit supported by the second cell.

[0202] In one implementation, the upper limit of PDCCH monitoring is the upper limit of the number of PDCCH candidates monitored by the terminal device, and the upper limit of the number of PDCCH candidates monitored by the terminal device in the second cell is the upper limit of the number of PDCCH candidates supported by the second cell.

[0203] If the second cell is a cell that does not support m-TRP, the upper limit of the number of PDCCH candidates supported by the second cell is in, The upper limit of the number of PDCCH candidates of a single cell is determined based on the time slot slot2 of the second cell and the subcarrier spacing μ2 of the second cell. The upper limit of the total number of PDCCH candidates of at least one cell with the same subcarrier spacing is determined based on the time slot slot2 of the second cell and the subcarrier spacing μ2 of the second cell. and The determination method of , please refer to the description of the above embodiment, which will not be repeated here. That is, if the second cell is a cell that does not support m-TRP, the terminal device cannot monitor more than , in each time slot of the second cell. PDCCH candidates.

[0204] If the second cell is a cell supporting m-TRP, the upper limit of the number of PDCCH candidates supported by the second cell is in, The upper limit of the number of PDCCH candidates of a single cell is determined based on the time slot slot2 of the second cell and the subcarrier spacing μ2 of the second cell. The upper limit of the total number of PDCCH candidates of at least one same SCS cell determined based on the time slot slot2 of the second cell and the subcarrier spacing μ2 of the second cell. and The determination method of , please refer to the description of the above embodiment, which will not be repeated here. That is, if the second cell is a cell supporting m-TRP, the terminal device cannot monitor more than PDCCH candidates.

[0205] In another implementation, the upper limit of PDCCH monitoring is the upper limit of the number of non-overlapping CCEs monitored by the terminal device, and the upper limit of the number of non-overlapping CCEs monitored by the terminal device in the second cell is the upper limit of the number of non-overlapping CCEs supported by the second cell.

[0206] If the second cell is a cell that does not support m-TRP, the upper limit of the number of non-overlapping CCEs supported by the second cell is in, The upper limit of the number of non-overlapping CCEs of a single cell is determined based on the time slot slot2 of the second cell and the subcarrier spacing μ2 of the second cell. The upper limit of the total number of non-overlapping CCEs of at least one cell with the same subcarrier spacing is determined based on the time slot slot2 of the second cell and the subcarrier spacing μ2 of the second cell. and The determination method of , please refer to the description of the above embodiment, which will not be repeated here. That is, if the second cell is a cell that does not support m-TRP, the terminal device cannot monitor more than , in each time slot of the second cell. non-overlapping CCEs.

[0207] If the second cell is a cell supporting m-TRP, the upper limit of the number of non-overlapping CCEs supported by the second cell is in, The upper limit of the number of non-overlapping CCEs of a single cell is determined based on the time slot slot2 of the second cell and the subcarrier spacing μ2 of the second cell. The upper limit of the total number of non-overlapping CCEs of at least one same SCS cell is determined based on the time slot slot2 of the second cell and the subcarrier spacing μ2 of the second cell. and The determination method of , please refer to the description of the above embodiment, which will not be repeated here. That is, if the second cell is a cell supporting m-TRP, the terminal device cannot monitor more than non-overlapping CCEs.

[0208] Case 2: the reference cell is the second cell.

[0209] When the reference cell is the second cell, the sum of the PDCCH monitoring upper limit of the first cell and the PDCCH monitoring upper limit of the second cell is the PDCCH monitoring upper limit supported by the second cell. That is, the PDCCH monitoring upper limit supported by the second cell is divided into two parts, one for the first PDCCH monitoring of the first cell and the other for the second PDCCH monitoring of the second cell.

[0210] Exemplarily, the PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by the second cell and the first ratio, the PDCCH monitoring upper limit of the second cell is determined based on the PDCCH monitoring upper limit supported by the second cell and the second ratio, the sum of the first ratio and the second ratio is 1, and the first ratio and the second ratio are both less than 1. The first ratio and / or the second ratio may be configured by the network device or specified by the protocol. For example, the network device may configure the first ratio and the second ratio through high-layer signaling.

[0211] For example, the second ratio is α, the first ratio is 1-α, the PDCCH monitoring upper limit of the second cell can be α*the PDCCH monitoring upper limit supported by the second cell, and the PDCCH monitoring upper limit of the first cell can be (1-α)*the PDCCH monitoring upper limit supported by the second cell. In this implementation, the network device can configure the value of α.

[0212] In one implementation, the upper limit of PDCCH monitoring is the upper limit of the number of PDCCH candidates monitored by the terminal device, and the upper limit of the number of PDCCH candidates monitored by the terminal device in the first cell is the product of the upper limit of the number of PDCCH candidates supported by the second cell and the first ratio. The upper limit of the number of PDCCH candidates monitored by the terminal device in the second cell is the product of the upper limit of the number of PDCCH candidates supported by the second cell and the second ratio. The second ratio is α and the first ratio is 1-α as an example.

[0213] If the second cell is a cell that does not support m-TRP, the upper limit of the number of PDCCH candidates supported by the second cell is The upper limit of the number of PDCCH candidates monitored by the terminal device in the first cell is

[0214] The upper limit of the number of PDCCH candidates monitored by the terminal device in the second cell is That is, the terminal device cannot monitor more than PDCCH candidates, the terminal device cannot monitor more than PDCCH candidates.

[0215] If the second cell is a cell supporting m-TRP, the upper limit of the number of PDCCH candidates supported by the second cell is The upper limit of the number of PDCCH candidates monitored by the terminal device in the first cell is The upper limit of the number of PDCCH candidates monitored by the terminal device in the second cell is That is, the terminal device cannot monitor more than PDCCH candidates, the terminal device cannot monitor more than PDCCH candidates.

[0216] In another implementation, the upper limit of PDCCH monitoring is the upper limit of the number of non-overlapping CCEs monitored by the terminal device, and the upper limit of the number of non-overlapping CCEs monitored by the terminal device in the first cell is the product of the upper limit of the number of non-overlapping CCEs supported by the second cell and the first ratio. The upper limit of the number of non-overlapping CCEs monitored by the terminal device in the second cell is the product of the upper limit of the number of non-overlapping CCEs supported by the second cell and the second ratio. The second ratio is α and the first ratio is 1-α as an example.

[0217] If the second cell is a cell that does not support m-TRP, the upper limit of the number of non-overlapping CCEs supported by the second cell is The upper limit of the number of non-overlapping CCEs monitored by the terminal device in the first cell is The upper limit of the number of non-overlapping CCEs monitored by the terminal device in the second cell is That is, the terminal device cannot monitor more than non-overlapping CCEs, the terminal device cannot monitor more than non-overlapping CCEs.

[0218] If the second cell is a cell supporting m-TRP, the upper limit of the number of non-overlapping CCEs supported by the second cell is The upper limit of the number of non-overlapping CCEs monitored by the terminal device in the first cell is The upper limit of the number of non-overlapping CCEs monitored by the terminal device in the second cell is That is, the terminal device cannot monitor more than non-overlapping CCEs, the terminal device cannot monitor more than non-overlapping CCEs.

[0219] The following example illustrates a method for determining a reference cell among at least two cells scheduled by the first PDCCH. If the search space of the first PDCCH is configured on the first cell and the search space of the first PDCCH is configured on the second cell, and the search space identifier of the first cell is the same as the search space identifier of the second cell, then the reference cell is the second cell.

[0220] If the search space of the first PDCCH is only configured on the first cell but not on other cells scheduled by the first PDCCH, the reference cell is the first cell.

[0221] Below Figure 3b to Figure 3d As an example, in Figure 3b to Figure 3d In the example, each cell does not support m-TRP. In the following example, the ratio α can be configured by the network device.

[0222] Please refer to Figure 3b , DCI1 on cell 1 schedules PDSCHs of two cells, namely PDSCHs of cell 1 and cell 2, and DCI on cell 2 performs self-carrier scheduling.

[0223] If cell 1 is the reference cell, for cell 1, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed slot1 is a time slot of cell 1, and μ1 is the subcarrier spacing of cell 1.

[0224] For cell 2, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed slot2 is a time slot of cell 2, and μ2 is the subcarrier spacing of cell 2.

[0225] If cell 2 is the reference cell, the upper limit of the number of PDCCH candidates supported by cell 2 needs to be divided. For cell 2, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed slot2 is a time slot of cell 2, and μ2 is the subcarrier spacing of cell 2.

[0226] For cell 1, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed slot2 is a time slot of cell 2, and μ2 is the subcarrier spacing of cell 2.

[0227] Please refer to Figure 3c , DCI1 on cell 1 schedules PDSCHs of three cells, namely PDSCHs of cell 1, cell 2 and cell 3, and DCI on cell 2 performs self-carrier scheduling. In this embodiment, if cell 1 or cell 2 is a reference cell, the upper limit of the number of PDCCH candidates monitored and the upper limit of the number of non-overlapping CCEs monitored are determined by referring to Figure 3b method of determination.

[0228] If cell 3 is the reference cell, for cell 1, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed Slot3 is a time slot of cell 3, and μ3 is the subcarrier spacing of cell 3.

[0229] For cell 2, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed

[0230] Please refer to Figure 3d , DCI1 on cell 1 schedules PDSCHs of three cells, namely PDSCHs of cell 1, cell 2 and cell 3. DCI2 on cell 2 performs self-carrier scheduling, and DCI3 on ​​cell 3 performs self-carrier scheduling.

[0231] If cell 1 is the reference cell, for cell 1, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed slot1 is a time slot of cell 1, and μ1 is the subcarrier spacing of cell 1.

[0232] For cell 2, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed slot2 is a time slot of cell 2, and μ2 is the subcarrier spacing of cell 2.

[0233] For cell 3, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed Slot3 is a time slot of cell 3, and μ3 is the subcarrier spacing of cell 3.

[0234] If cell 2 is the reference cell, the upper limit of the number of PDCCH candidates supported by cell 2 needs to be divided, one part for multi-cell scheduling of cell 1, and one part for self-carrier scheduling of cell 2. For cell 2, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed slot2 is a time slot of cell 2, and μ2 is the subcarrier spacing of cell 2.

[0235] For cell 1, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed slot2 is a time slot of cell 2, and μ2 is the subcarrier spacing of cell 2.

[0236] For cell 3, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed Slot3 is a time slot of cell 3, and μ3 is the subcarrier spacing of cell 3.

[0237] If cell 3 is the reference cell, the upper limit of the number of PDCCH candidates supported by cell 3 needs to be divided, one part for multi-cell scheduling of cell 1, and one part for self-carrier scheduling of cell 3. For cell 3, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed Slot3 is a time slot of cell 3, and μ3 is the subcarrier spacing of cell 3.

[0238] For cell 1, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed Slot3 is a time slot of cell 3, and μ3 is the subcarrier spacing of cell 3.

[0239] For cell 2, the number of PDCCH candidates monitored by the terminal device in each time slot cannot exceed And the number of non-overlapping CCEs monitored by the terminal device in each time slot cannot exceed slot2 is a time slot of cell 2, and μ2 is the subcarrier spacing of cell 2.

[0240] In an embodiment of the present application, a first PDCCH for scheduling multiple cells (i.e., multi-carrier scheduling) is sent on a first cell, and a second PDCCH for self-carrier scheduling is sent on a second cell. The multiple cells include the second cell. In other words, there are multiple scheduling cells in the scheduled second cell. The embodiment of the present application provides a method for determining the upper limit of PDCCH monitoring in a scenario where there are multiple scheduling cells in the scheduled cell.

[0241] See also Figure 4 , Figure 4 It is a structural diagram of a communication device provided in an embodiment of the present application. The communication device is applied to a terminal device. Exemplarily, the communication device can be a terminal device or a device in a terminal device, for example, it can be a chip or chip module in the terminal device, or a device that can be used in combination with the terminal device. Figure 4 The communication device 100 shown may include a sending unit 110 and a receiving unit 120, wherein:

[0242] A receiving unit 120 is configured to receive a physical downlink control channel PDCCH, where the PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where at least N of the at least two cells have different subcarrier spacings, where N is a positive integer greater than or equal to 2;

[0243] The receiving unit 120 is further configured to receive the PDSCHs of the at least two cells;

[0244] A sending unit 110 is configured to send a physical uplink control channel PUCCH in a first time slot, where the PUCCH includes hybrid automatic repeat request confirmation HARQ-ACK information of the PDSCHs of the at least two cells;

[0245] The first time slot is determined based on the second time slot, and the second time slot is a reception time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells.

[0246] In a possible implementation manner, the reference PDSCH is a PDSCH of a cell having the largest subcarrier spacing among the at least two cells; or,

[0247] The reference PDSCH is the PDSCH of a cell having the smallest subcarrier spacing among the at least two cells.

[0248] In a possible implementation manner, the reference PDSCH is a PDSCH of a cell having a largest cell index value among the at least two cells; or,

[0249] The reference PDSCH is the PDSCH of the cell with the smallest cell index value among the at least two cells.

[0250] In a possible implementation manner, the reference PDSCH is a PDSCH having the latest reception end time among the PDSCHs of the at least two cells.

[0251] In a possible implementation, if the PDSCH with the latest reception end time among the PDSCHs of the at least two cells includes PDSCHs of M cells, and subcarrier spacings of at least K cells among the M cells are different,

[0252] Then the reference PDSCH is the PDSCH of the cell with the largest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest cell index value among the M cells, or the reference PDSCH is the PDSCH of the cell with the largest cell index value among the M cells;

[0253] Among them, 2≤K≤M, and M and K are positive integers.

[0254] In a possible implementation, the index number of the first time slot is n+k, where n is used to index the last uplink time slot that overlaps with the second time slot, and k represents a time slot offset.

[0255] about Figure 4 The specific embodiment description can refer to Figure 2a The description of the embodiments will not be repeated here.

[0256] Reuse Figure 4 The communication device can be applied to a network device. Exemplarily, the communication device can be a network device or a device in a network device, for example, it can be a chip or a chip module in the network device, or a device that can be used in conjunction with the network device. Figure 4 The communication device 100 shown may include a sending unit 110 and a receiving unit 120, wherein:

[0257] A sending unit 110 is configured to send a physical downlink control channel PDCCH, where the PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where at least N of the at least two cells have different subcarrier spacings, where N is a positive integer greater than or equal to 2;

[0258] The sending unit 110 is further configured to send the PDSCHs of the at least two cells;

[0259] The receiving unit 120 is configured to receive a physical uplink control channel PUCCH in a first time slot, where the PUCCH includes hybrid automatic repeat request confirmation HARQ-ACK information of the PDSCHs of the at least two cells;

[0260] The first time slot is determined based on the second time slot, and the second time slot is a reception time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells.

[0261] In a possible implementation manner, the reference PDSCH is a PDSCH of a cell having the largest subcarrier spacing among the at least two cells; or,

[0262] The reference PDSCH is the PDSCH of a cell having the smallest subcarrier spacing among the at least two cells.

[0263] In a possible implementation manner, the reference PDSCH is a PDSCH of a cell having a largest cell index value among the at least two cells; or,

[0264] The reference PDSCH is the PDSCH of the cell with the smallest cell index value among the at least two cells.

[0265] In a possible implementation manner, the reference PDSCH is a PDSCH having the latest reception end time among the PDSCHs of the at least two cells.

[0266] In a possible implementation, if the PDSCH with the latest reception end time among the PDSCHs of the at least two cells includes PDSCHs of M cells, subcarrier spacings of at least K cells among the M cells are different;

[0267] Then the reference PDSCH is the PDSCH of the cell with the largest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest cell index value among the M cells, or the reference PDSCH is the PDSCH of the cell with the largest cell index value among the M cells;

[0268] Among them, 2≤K≤M, and M and K are positive integers.

[0269] In a possible implementation, the index number of the first time slot is n+k, where n is used to index the last uplink time slot that overlaps with the second time slot, and k represents a time slot offset.

[0270] about Figure 4 The specific embodiment description can refer to the description of embodiment 2a, which will not be repeated here.

[0271] See also Figure 5 , Figure 5 It is a structural schematic diagram of another communication device provided in an embodiment of the present application. The communication device is applied to a terminal device. Exemplarily, the communication device can be a terminal device or a device in a terminal device, for example, it can be a chip or chip module in the terminal device, or a device that can be used in combination with the terminal device. Figure 5 The communication device 200 shown may include a first monitoring unit 210 and a second monitoring unit 220, wherein:

[0272] A first monitoring unit 210 is configured to monitor a first physical downlink control channel PDCCH in a first cell, where the first PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where the at least two cells include a second cell;

[0273] A second monitoring unit 220, configured to monitor a second PDCCH in the second cell, where the second PDCCH is used to schedule a PDSCH of the second cell;

[0274] The PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by a reference cell, and the reference cell is the first cell or the second cell.

[0275] In a possible implementation manner, the reference cell is the first cell, and the PDCCH monitoring upper limit of the first cell is the PDCCH monitoring upper limit supported by the first cell.

[0276] In a possible implementation manner, the reference cell is the first cell, and the PDCCH monitoring upper limit of the second cell is the PDCCH monitoring upper limit supported by the second cell.

[0277] In a possible implementation manner, the reference cell is the second cell, and the sum of the PDCCH monitoring upper limit of the first cell and the PDCCH monitoring upper limit of the second cell is the PDCCH monitoring upper limit supported by the second cell.

[0278] In one possible implementation, the PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by the second cell and a first ratio, and the PDCCH monitoring upper limit of the second cell is determined based on the PDCCH monitoring upper limit supported by the second cell and a second ratio, the sum of the first ratio and the second ratio is 1, and the first ratio and the second ratio are both less than 1.

[0279] In a possible implementation manner, if the search space of the first PDCCH is configured on the first cell, and the search space of the first PDCCH is configured on the second cell, and the search space identifier of the first cell is the same as the search space identifier of the second cell, then the reference cell is the second cell; or,

[0280] If the search space of the first PDCCH is configured on the first cell and the search space of the first PDCCH is not configured on a cell other than the first cell among the at least two cells, the reference cell is the first cell.

[0281] about Figure 5 The specific embodiment description can refer to the description of embodiment 3a, which will not be repeated here.

[0282] See also Figure 6 , Figure 6 is a schematic diagram of a communication device provided in an embodiment of the present application, which is used to implement the above Figure 2a or Figure 3a The functions of the terminal device in the Figure 2a or Figure 3a The communication device 300 may be a terminal device or a device for a terminal device. The device for a terminal device may be a chip system or a chip in a terminal device. The communication device may also be a network device or a device for a network device. The device for a network device may be a chip system or a chip in a network device. Among them, the chip system may be composed of a chip, or may include a chip and other discrete devices.

[0283] The communication device 300 includes at least one processor 320, which is used to implement the data processing function of the terminal device or network device in the method provided in the embodiment of the present application. The communication device 300 may also include a communication interface 310, which is used to implement the transceiver operation of the terminal device or network device in the method provided in the embodiment of the present application. In the embodiment of the present application, the processor 320 may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. In the embodiment of the present application, the communication interface 310 may be a transceiver, circuit, bus, module or other type of communication interface, which is used to communicate with other devices through a transmission medium. For example, the communication interface 310 is used for the communication device 300 to communicate with other devices. The processor 320 uses the communication interface 310 to send and receive data and is used to implement the above method embodiment. Figure 2a or Figure 3a The method described in .

[0284] The communication device 300 may also include at least one memory 330 for storing program instructions and / or data. The memory 330 is coupled to the processor 320. The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 320 may operate in conjunction with the memory 330. The processor 320 may execute program instructions stored in the memory 330. At least one of the at least one memory may be included in the processor.

[0285] When the communication device 300 is turned on, the processor 320 can read the software program in the memory 330, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 320 performs baseband processing on the data to be sent and outputs the baseband signal to the RF circuit ( Figure 6The RF circuit processes the baseband signal and then transmits the RF signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the communication device 300, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 320, which converts the baseband signal into data and processes the data.

[0286] In another implementation, the RF circuit and antenna may be arranged independently from the processor 320 that performs baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be arranged independently from the device in a remote manner.

[0287] The specific connection medium between the communication interface 310, the processor 320 and the memory 330 is not limited in the embodiment of the present application. Figure 6 In the embodiment, the memory 330, the processor 320 and the communication interface 310 are connected via a bus 340. Figure 6 The connections between the other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0288] When the communication device 300 is specifically used in a terminal device, for example, when the communication device 300 is specifically a chip or a chip system, the communication interface 310 may output or receive a baseband signal. When the communication device 300 is specifically a terminal device, the communication interface 310 may output or receive a radio frequency signal.

[0289] It should be noted that the device can execute the relevant steps of the terminal device or network device in the aforementioned method embodiment. For details, please refer to the implementation methods provided in the above steps, which will not be repeated here.

[0290] For each device or product applied to or integrated in the device, each module contained therein can be implemented in the form of hardware such as circuits, and different modules can be located in the same component (for example, a chip, circuit module, etc.) or different components in the terminal, or at least some of the modules can be implemented in the form of a software program that runs on a processor integrated inside the terminal, and the remaining (if any) modules can be implemented in the form of hardware such as circuits.

[0291] The above-mentioned memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM) or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static ram (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0292] The present application provides a chip. The chip includes: a processor and a memory. The number of the processors can be one or more, and the number of the memories can be one or more. The processor can execute the above instructions and data stored in the memory by reading the instructions and data stored in the memory. Figure 2a or Figure 3a The method shown in and the steps performed by the relevant implementation methods.

[0293] like Figure 7 As shown, Figure 7 400 can execute the steps of the terminal device in the above method embodiment, or the module device 400 can execute the steps of the network device in the above method embodiment.

[0294] The module device 400 includes: a communication module 410, a power module 420, a storage module 430 and a chip module 440. The power module 420 is used to provide power to the module device; the storage module 430 is used to store data and / or instructions; the communication module 410 is used to communicate with external devices; the chip module 440 is used to call the data and / or instructions stored in the storage module 430, and in combination with the communication module 410, the above-mentioned Figure 2a or Figure 3a The method shown in and the steps performed by the relevant implementation methods.

[0295] The present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and the computer program includes program instructions. When the electronic device executes the program instructions, the above Figure 2a or Figure 3a The steps performed by the terminal device in the method shown in, or the implementation of the above Figure 2a or Figure 3a The steps performed by the network device in the method shown in .

[0296] The computer-readable storage medium may be an internal storage unit of the terminal device or network device described in any of the foregoing embodiments, such as a hard disk or memory of the device. The computer-readable storage medium may also be an external storage device of the terminal device or network device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the device. Further, the computer-readable storage medium may also include both an internal storage unit of the terminal device or network device and an external storage device. The computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device or network device. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media sets. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a high-density digital video disc (DVD)), or a semiconductor medium. The semiconductor medium may be a solid-state hard disk.

[0297] Regarding the various modules / units included in the various devices and products described in the above embodiments, they can be software modules / units, or hardware modules / units, or they can be partially software modules / units and partially hardware modules / units. For example, for various devices and products applied to or integrated in a chip, the various modules / units included therein can all be implemented in the form of hardware such as circuits, or at least some of the modules / units can be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in a chip module, the various modules / units included therein can all be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component of the chip module (such as a chip, circuit module, etc.) or in different components, or at least some of the modules / units can be implemented in the form of software programs. It is implemented in the form of a software program, which runs on a processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in hardware such as circuits; for each device or product applied to or integrated in the data acquisition node, each module / unit contained therein can be implemented in hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal, or, at least some modules / units can be implemented in the form of a software program, which runs on a processor integrated inside the data acquisition node, and the remaining (if any) modules / units can be implemented in hardware such as circuits.

[0298] The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination thereof. When implemented using software, the above embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means.

[0299] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0300] In the several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device embodiments described above are merely schematic; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0301] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0302] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0303] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a gateway node, etc.) to perform some steps of the method described in each embodiment of the present invention.

[0304] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0305] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the application.

Claims

1. A feedback information transmission method, characterized in that: The method comprises: Receiving a physical downlink control channel PDCCH, where the PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where subcarrier spacings of at least N cells of the at least two cells are different, and N is a positive integer greater than or equal to 2; Receiving PDSCHs of the at least two cells; Sending a physical uplink control channel PUCCH in a first time slot, where the PUCCH includes hybrid automatic repeat request confirmation HARQ-ACK information of the PDSCHs of the at least two cells; The first time slot is determined based on the second time slot, and the second time slot is a reception time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells.

2. The method according to claim 1, characterized in that The reference PDSCH is the PDSCH of the cell with the largest subcarrier spacing among the at least two cells; or, The reference PDSCH is the PDSCH of a cell having the smallest subcarrier spacing among the at least two cells.

3. The method according to claim 1, characterized in that The reference PDSCH is the PDSCH of the cell with the largest cell index value among the at least two cells; or, The reference PDSCH is the PDSCH of the cell with the smallest cell index value among the at least two cells.

4. The method according to claim 1, characterized in that The reference PDSCH is the PDSCH with the latest reception end time among the PDSCHs of the at least two cells.

5. The method according to claim 4, characterized in that If the PDSCH with the latest reception end time among the PDSCHs of the at least two cells includes PDSCHs of M cells, and the subcarrier spacings of at least K cells among the M cells are different, Then the reference PDSCH is the PDSCH of the cell with the largest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest cell index value among the M cells, or the reference PDSCH is the PDSCH of the cell with the largest cell index value among the M cells; Among them, 2≤K≤M, and M and K are positive integers.

6. The method according to any one of claims 1 to 5, characterized in that: The index number of the first time slot is n+k, where n is used to index the last uplink time slot that overlaps with the second time slot, and k represents a time slot offset.

7. A feedback information transmission method, characterized in that: The method comprises: Sending a physical downlink control channel PDCCH, where the PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where subcarrier spacings of at least N cells of the at least two cells are different, and N is a positive integer greater than or equal to 2; Sending the PDSCHs of the at least two cells; Receiving a physical uplink control channel PUCCH in a first time slot, wherein the PUCCH includes hybrid automatic repeat request confirmation HARQ-ACK information of the PDSCHs of the at least two cells; The first time slot is determined based on the second time slot, and the second time slot is a reception time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells.

8. The method according to claim 7, characterized in that The reference PDSCH is the PDSCH of the cell with the largest subcarrier spacing among the at least two cells; or, The reference PDSCH is the PDSCH of a cell having the smallest subcarrier spacing among the at least two cells.

9. The method according to claim 7, characterized in that The reference PDSCH is the PDSCH of the cell with the largest cell index value among the at least two cells; or, The reference PDSCH is the PDSCH of the cell with the smallest cell index value among the at least two cells.

10. The method according to claim 9, characterized in that The reference PDSCH is the PDSCH with the latest reception end time among the PDSCHs of the at least two cells.

11. The method according to claim 10, characterized in that If the PDSCH with the latest reception end time among the PDSCHs of the at least two cells includes PDSCHs of M cells, subcarrier spacings of at least K cells among the M cells are different; Then the reference PDSCH is the PDSCH of the cell with the largest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest subcarrier spacing among the M cells, or the reference PDSCH is the PDSCH of the cell with the smallest cell index value among the M cells, or the reference PDSCH is the PDSCH of the cell with the largest cell index value among the M cells; Among them, 2≤K≤M, and M and K are positive integers.

12. The method according to any one of claims 7 to 11, characterized in that: The index number of the first time slot is n+k, where n is used to index the last uplink time slot that overlaps with the second time slot, and k represents a time slot offset.

13. A channel monitoring method, characterized in that: The method comprises: Monitoring a first physical downlink control channel PDCCH in a first cell, where the first PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where the at least two cells include the second cell; Monitoring a second PDCCH in the second cell, where the second PDCCH is used to schedule a PDSCH in the second cell; The PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by a reference cell, and the reference cell is the first cell or the second cell.

14. The method according to claim 13, characterized in that The reference cell is the first cell, and the PDCCH monitoring upper limit of the first cell is the PDCCH monitoring upper limit supported by the first cell.

15. The method according to claim 13 or 14, characterized in that The reference cell is the first cell, and the PDCCH monitoring upper limit of the second cell is the PDCCH monitoring upper limit supported by the second cell.

16. The method according to claim 13, characterized in that The reference cell is the second cell, and the sum of the PDCCH monitoring upper limit of the first cell and the PDCCH monitoring upper limit of the second cell is the PDCCH monitoring upper limit supported by the second cell.

17. The method according to claim 16, characterized in that The PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by the second cell and a first ratio, and the PDCCH monitoring upper limit of the second cell is determined based on the PDCCH monitoring upper limit supported by the second cell and a second ratio, the sum of the first ratio and the second ratio is 1, and the first ratio and the second ratio are both less than 1.

18. The method according to claim 13, characterized in that If the search space of the first PDCCH is configured on the first cell, and the search space of the first PDCCH is configured on the second cell, and the search space identifier of the first cell is the same as the search space identifier of the second cell, then the reference cell is the second cell; or, If the search space of the first PDCCH is configured on the first cell and the search space of the first PDCCH is not configured on a cell other than the first cell among the at least two cells, the reference cell is the first cell.

19. A communication device, characterized in that: include: A receiving unit, configured to receive a physical downlink control channel PDCCH, where the PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where at least N of the at least two cells have different subcarrier spacings, where N is a positive integer greater than or equal to 2; The receiving unit is further configured to receive the PDSCHs of the at least two cells; A sending unit, configured to send a physical uplink control channel PUCCH in a first time slot, wherein the PUCCH includes hybrid automatic repeat request confirmation HARQ-ACK information of the PDSCHs of the at least two cells; The first time slot is determined based on the second time slot, and the second time slot is a reception time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells.

20. A communication device, characterized in that: include: A sending unit, configured to send a physical downlink control channel PDCCH, where the PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where subcarrier spacings of at least N cells of the at least two cells are different, and N is a positive integer greater than or equal to 2; The sending unit is further used to send the PDSCH of the at least two cells; A receiving unit, configured to receive a physical uplink control channel PUCCH in a first time slot, wherein the PUCCH includes hybrid automatic repeat request confirmation HARQ-ACK information of the PDSCHs of the at least two cells; The first time slot is determined based on the second time slot, and the second time slot is a reception time slot of a reference PDSCH; the reference PDSCH is a PDSCH among the PDSCHs of the at least two cells.

21. A communication device, characterized in that: include: A first monitoring unit, configured to monitor a first physical downlink control channel PDCCH in a first cell, where the first PDCCH is used to schedule a physical downlink shared channel PDSCH of at least two cells, where the at least two cells include a second cell; A second monitoring unit, configured to monitor a second PDCCH in the second cell, where the second PDCCH is used to schedule a PDSCH of the second cell; The PDCCH monitoring upper limit of the first cell is determined based on the PDCCH monitoring upper limit supported by a reference cell, and the reference cell is the first cell or the second cell.

22. A communication device, characterized in that: The communication device includes a processor and a memory, and the processor and the memory are connected to each other, wherein the memory is used to store a computer program, and the computer program includes program instructions. The processor calls the program instructions to execute the method according to any one of claims 1 to 6, or executes the method according to any one of claims 7 to 12, or executes the method according to any one of claims 13 to 18.

23. A chip, characterized in that: The chip includes a processor and an interface, and the processor is coupled to the interface; the interface is used to receive or output signals, and the processor is used to execute code instructions, execute the method as described in any one of claims 1 to 6, or execute the method as described in any one of claims 7 to 12, or execute the method as described in any one of claims 13 to 18.

24. A module device, characterized in that: The module device includes a communication module, a power module, a storage module and a chip module, wherein: The power module is used to provide electrical energy to the module device; The storage module is used to store data and / or instructions; The communication module is used to communicate with external devices; The chip module is used to call the data and / or instructions stored in the storage module to execute the method described in any one of claims 1 to 6, or to execute the method described in any one of claims 7 to 12, or to execute the method described in any one of claims 13 to 18.

25. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which includes program instructions. When a computer executes the program instructions, it implements the method according to any one of claims 1 to 6; or implements the method according to any one of claims 7 to 12, or implements the method according to any one of claims 13 to 18.

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