Wireless communication method and device, equipment and storage medium

Abstract

The embodiment of the invention provides a wireless communication method and device, equipment and a storage medium, and the method comprises the steps that network equipment sends first downlink control information (DCI) to terminal equipment, the network equipment sends the first DCI to the terminal equipment, the first DCI is used for scheduling at least two carriers at the same time, the first DCI adopts a first DCI format, and the first DCI is used for scheduling at least two carriers at the same time; the first DCI format comprises a first indication field, the first indication field is used for indicating scheduling information of each carrier in the at least two carriers, the bit width of the first indication field is a first bit width, and the first bit width is determined according to carriers which can be scheduled by the first DCI at the same time.

Description

Wireless communication method, device, equipment, and storage medium Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a wireless communication method and apparatus, device, and storage medium. Background Art

[0002] In fifth-generation (5G) systems, also known as new radio (NR) systems, the network configures different downlink control information (DCI) formats for terminals to accommodate scheduling requirements in different scenarios and network configurations. Different DCI formats can be distinguished by different DCI sizes or the format indicator field in the DCI. In NR systems, one DCI can only schedule one data transmission on one carrier.

[0003] In some scenarios, it is necessary to utilize the limited physical downlink control channel (PDCCH) resources to schedule as much data transmission as possible. Therefore, a solution is proposed in which one DCI schedules multiple data transmissions on multiple carriers (one data transmission on each carrier). When configuring one DCI to schedule data transmissions on multiple carriers, there is an indication field that includes corresponding scheduling information for multiple data transmissions, and the bit width of the indication field is not clearly defined, resulting in the terminal device being unable to successfully receive or decode the scheduling information carried by the DCI.

[0004] Summary of the Invention

[0005] Embodiments of the present application provide a wireless communication method, apparatus, device, and storage medium.

[0006] The wireless communication method provided in the embodiment of the present application includes:

[0007] The network device sends first downlink control information DCI to the terminal device, where the first DCI is used to simultaneously schedule at least two carriers. The first DCI adopts a first DCI format, and the first DCI format includes a first indication field. The first indication field is used to indicate scheduling information of each carrier in the at least two carriers. The bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that the first DCI can schedule simultaneously.

[0008] The wireless communication method provided in the embodiment of the present application includes:

[0009] The terminal device receives the first downlink control information DCI sent by the network device, where the first DCI is used to simultaneously schedule at least two carriers. The first DCI adopts a first DCI format, and the first DCI format includes a first indication field. The first indication field is used to indicate the scheduling information of each carrier in the at least two carriers. The bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that can be simultaneously scheduled by the first DCI.

[0010] The network device provided in the embodiment of the present application includes:

[0011] A first communication unit is configured to send first downlink control information DCI to a terminal device, where the first DCI is used to simultaneously schedule at least two carriers. The first DCI adopts a first DCI format, and the first DCI format includes a first indication field. The first indication field is used to indicate scheduling information of each carrier in the at least two carriers. The bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that can be simultaneously scheduled by the first DCI.

[0012] The terminal device provided in the embodiment of the present application includes:

[0013] The second communication unit is configured to receive first downlink control information DCI sent by a network device, where the first DCI is used to simultaneously schedule at least two carriers, the first DCI adopts a first DCI format, and the first DCI format includes a first indication field, the first indication field is used to indicate scheduling information of each carrier in the at least two carriers, and the bit width of the first indication field is a first bit width, which is determined according to the carriers that can be simultaneously scheduled by the first DCI.

[0014] The communication device provided in an embodiment of the present application may be the terminal device in the above-mentioned solution, and the communication device includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the wireless communication method executed by the above-mentioned terminal device.

[0015] The communication device provided in an embodiment of the present application may be the network device in the above-mentioned solution, and the communication device includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and execute the computer program stored in the memory to execute the above-mentioned wireless communication method performed by the network device.

[0016] The chip provided in the embodiment of the present application is used to implement the above-mentioned wireless communication method.

[0017] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned wireless communication method.

[0018] The computer-readable storage medium provided in an embodiment of the present application is used to store a computer program, and the execution of the computer program enables a computer to execute the above-mentioned wireless communication method.

[0019] The computer program product provided in the embodiments of the present application includes computer program instructions, and the execution of the computer program instructions enables a computer to execute the above-mentioned wireless communication method.

[0020] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned wireless communication method.

[0021] Through the above technical solution, the first DCI sent by the network device to the terminal device is used to schedule at least two carriers, and the first DCI adopts the first DCI format. The first indication field in the first DCI format is used to indicate the scheduling information of each carrier in the at least two carriers. The bit width of the first indication field is determined according to the carriers that the first DCI can schedule at the same time, thereby clearly limiting the bit width of the first indication field, so that when the network device sends the first DCI to the terminal device, the terminal device receives and parses the first indication field in the DCI based on the first bit width, ensuring that the scheduling information indicated by the first indication field can be correctly transmitted between the network device and the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application;

[0024] FIG2 is a first schematic diagram of an optional flow chart of a wireless communication method according to an embodiment of the present application;

[0025] FIG3 is a second optional flow chart of the wireless communication method according to an embodiment of the present application;

[0026] FIG4 is a third optional flow chart of the wireless communication method according to an embodiment of the present application;

[0027] FIG5 is a schematic diagram of an optional structure of a network device according to an embodiment of the present application;

[0028] FIG6 is a schematic diagram of an optional structure of a terminal device according to an embodiment of the present application;

[0029] FIG7 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0030] FIG8 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0031] FIG9 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0034] As shown in Figure 1, a communication system 100 may include a terminal device 110 and a network device 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0035] It should be understood that the embodiments of the present application are only illustrative of the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as NR communication system), or future communication systems.

[0036] In the communication system 100 shown in Figure 1, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 (eg, UE) located within the coverage area.

[0037] The network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0038] The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0039] For example, the terminal device 110 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0040] The terminal device 110 can be used for device-to-device (D2D) communication.

[0041] The wireless communication system 100 may further include a core network device 130 for communicating with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device, such as an Access and Mobility Management Function (AMF), an Authentication Server Function (AUSF), a User Plane Function (UPF), or a Session Management Function (SMF). Optionally, the core network device 130 may also be an Evolved Packet Core (EPC) device of an LTE network, such as a Session Management Function + Core Packet Gateway (SMF+PGW-C) device. It should be understood that SMF+PGW-C can simultaneously implement the functions that can be implemented by SMF and PGW-C. During the network evolution process, the above-mentioned core network device may also be called other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited in the embodiments of the present application.

[0042] The functional units in the communication system 100 may also establish connections and implement communication via next generation (NG) network interfaces.

[0043] For example, the terminal device establishes an air interface connection with the access network device through the Uu interface for transmitting user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (referred to as N1); the access network device, such as the next generation wireless access base station (gNB), can establish a user plane data connection with the UPF through the NG interface 3 (referred to as N3); the access network device can establish a control plane signaling connection with the AMF through the NG interface 2 (referred to as N2); the UPF can establish a control plane signaling connection with the SMF through the NG interface 4 (referred to as N4); the UPF can exchange user plane data with the data network through the NG interface 6 (referred to as N6); the AMF can establish a control plane signaling connection with the SMF through the NG interface 11 (referred to as N11); the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (referred to as N7).

[0044] Figure 1 exemplarily shows a base station, a core network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices and each base station may include other numbers of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0045] It should be noted that Figure 1 is merely an example of a system applicable to this application. Of course, the methods described in the embodiments of this application can also be applied to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein simply describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the associated objects are in an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, "A indicates B" can mean that A directly indicates B, for example, B can obtain information through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can obtain information through C; or it can mean that A and B have an association relationship. It should also be understood that the "correspondence" mentioned in the embodiments of this application can mean that there is a direct or indirect correspondence between two objects, or that there is an association relationship between the two objects, or a relationship between an indicator and the indicated, a configuration and the configured, and so on. It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit its specific implementation method. For example, predefined can refer to a definition in a protocol. It should also be understood that in the embodiments of the present application, the “protocol” can refer to a standard protocol in the field of communications, for example, it can include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0046] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0047] Method for determining the bit width of the indicator field in the DCI format

[0048] In 5G or NR systems, network equipment configures different downlink control information (DCI) formats for terminal devices to adapt to different scenarios and network configuration scheduling requirements. Different DCI formats can be distinguished by different DCI sizes or format indication fields in the DCI. The bit width of each indication field in the DCI is determined by protocol agreement or configuration information.

[0049] The indication field in the DCI format may include at least one of the following indication fields: a hybrid automatic repeat-request (HARQ) process number indication field, an antenna port indication field, precoding information, and a layer number indication field.

[0050] The bit width of the fixed HARQ process number indication field in the protocol is fixed at 4 bits in DCI formats 0_0 / 1_0. In DCI formats 0_1 / 1_1, the bit width is determined by whether the higher-layer parameters harq-ProcessNumberSizeDCI-0-1 and harq-ProcessNumberSizeDCI-1-1 are configured. If the corresponding higher-layer parameters are configured, the bit width is 5 bits; otherwise, the bit width is 4 bits. In DCI formats 0_2 and 1_2, the bit width is determined by the higher-layer parameters harq-ProcessNumberSizeDCI-0-2, harq-ProcessNumberSizeDCI-0-2-r17, harq-ProcessNumberSizeDCI-1-2, and harq-ProcessNumberSizeDCI-1-2-r17, and can be 0, 1, 2, 3, 4, or 0, 1, 2, 3, 4, 5 bits.

[0051] The method for determining the bit width of the antenna port indication field, precoding information and layer number indication field, redundant version indication field and HARQ process number indication field is similar. The antenna port indication field determines the bit width based on the configuration information related to the demodulation reference signal (DMRS) or the indication field configuration information. The precoding information and layer number indication field determine the bit width based on the configured codebook information or codebook type. For example: in DCI format 0_1, if the number of scheduled PUSCHs indicated by the time domain resource indication field is 1, the number of bits of the redundant version indication field is 2; in DCI format 0_2, the number of bits of the redundant version indication field is determined based on the high-level parameter numberOfBitsForRV-DCI-0-2, which is 0, 1 or 2.

[0052] One DCI schedules physical downlink shared channels (PDSCH) or physical uplink shared channels (PUSCH) on multiple carriers.

[0053] In 5G or NR systems, a single DCI can only schedule data transmission on a single carrier. In some network configurations, such as when LTE and NR share a frequency band, or when a large amount of service data needs to be transmitted, or when multiple carriers need to be transmitted simultaneously, it is necessary to utilize the limited configured PDCCH resources to schedule as much data transmission as possible. Therefore, a solution is proposed for scheduling multiple data transmissions on multiple carriers (one data transmission on each carrier) using a single DCI (DCI format 0_X / 1_X). When configuring a single DCI to schedule data transmission on multiple carriers, a carrier set and a cell combination contained in the set are configured. Each carrier set corresponds to a DCI format or a DCI format of size X, which can schedule a cell combination consisting of the carriers in the set. A cell combination contains multiple carriers scheduled simultaneously by a single DCI. Carrier sets and the cell combinations within a carrier set are configured via higher-layer signaling. The number of cell combinations in a carrier set is not limited to one. The number of carrier sets is not limited to one.

[0054] This type of DCI that can schedule multiple data transmissions on different carriers contains the same indication fields as the DCI that schedules one data transmission on one carrier. Some indication fields indicate the same information for multiple data transmissions, and their bit width is the same as the corresponding indication fields in the existing DCI. Some indication fields include scheduling information corresponding to multiple data transmissions. The classification of indication fields is as follows:

[0055] Type 1 (Type-1), DCI contains only one indication field, and the data transmission on multiple scheduled carriers shares the indication information, or indicates the scheduling information of data transmission on different carriers through joint coding. It is specifically divided into Type-1A, Type-1B and Type-1C;

[0056] Type 2 (Type-2), an indication field used for a certain type of information in DCI, indicates multiple scheduled carriers separately. It can be understood that the indication information of multiple carriers is cascaded as the indication information of the indication field, and the number of cascaded indication information is not less than the number of carriers in the carrier combination scheduled by the current DCI;

[0057] Type-3 can be configured as Type 1 or Type 2.

[0058] In order to meet the needs of one DCI scheduling data transmission of multiple carriers, a new DCI format needs to be defined for this purpose. In the existing DCI format, the bit width of each indicator field is fixed or determined according to the configuration. In the new DCI format, the bit width of some indicator fields is the same as the original DCI format, and some indicator fields (Type-2feild) respectively indicate the scheduling information of each data transmission, and there is no clear rule for how to determine the bit width. In the related art, according to the working mode of the system, each DCI format needs to have a clear number of information bits. Correspondingly, the bit width of each indicator field is clear after the configuration is determined. Only in this way can the terminal device determine the accurate scheduling information based on the number of information bits of the DCI and the bit width of each indicator field. The method for determining the bit width of some indicator fields in the new DCI format is unclear, which will cause the terminal device to fail to successfully receive or decode the DCI to obtain accurate scheduling information, which will directly affect the system performance.

[0059] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0060] The wireless communication method provided in an embodiment of the present application is applied to a network device, as shown in FIG2 , and includes:

[0061] S201. The network device sends first downlink control information DCI to the terminal device. The first DCI is used to simultaneously schedule at least two carriers. The first DCI adopts a first DCI format. The first DCI format includes a first indication field. The first indication field is used to indicate scheduling information of each carrier in the at least two carriers. The bit width of the first indication field is a first bit width. The first bit width is determined according to the carriers that can be simultaneously scheduled by the first DCI.

[0062] The wireless communication method provided in the embodiment of the present application is applied to a terminal device, as shown in FIG3 , and includes:

[0063] S301. The terminal device receives the first downlink control information DCI sent by the network device, where the first DCI is used to simultaneously schedule at least two carriers. The first DCI adopts a first DCI format, and the first DCI format includes a first indication field. The first indication field is used to indicate the scheduling information of each carrier in the at least two carriers. The bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that can be simultaneously scheduled by the first DCI.

[0064] The wireless communication method provided in the embodiment of the present application is applied to a communication system including a terminal device and a network device, as shown in FIG4 :

[0065] S401. A network device sends a first DCI to a terminal device.

[0066] The first DCI is used to simultaneously schedule at least two carriers, the first DCI adopts a first DCI format, the first DCI format includes a first indication field, the first indication field is used to indicate the scheduling information of each carrier in the at least two carriers, and the bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that the first DCI can simultaneously schedule.

[0067] Below, the wireless communication method described in any of Figures 2 to 4 provided in the embodiments of the present application is further described.

[0068] The first DCI sent by the network device to the terminal device is used to call at least two carriers simultaneously. It can be understood that the first DCI has the ability to schedule at least two carriers simultaneously. The carriers scheduled simultaneously by the first DCI sent by the network device to the terminal device actually include one or at least two carriers.

[0069] The first DCI simultaneously scheduling at least two carriers can be understood as the first DCI simultaneously scheduling at least two data transmissions on at least two carriers, wherein one carrier carries one data transmission.

[0070] The first DCI format uses the first DCI format, which can be DCI format 0_X or DCI format 1_X. DCI format 0_X is used to schedule uplink transmissions, such as the PUSCH. If the first DCI format is DCI format 0_X, all data scheduled by the first DCI are uplink transmissions. DCI format 1_X is used for downlink transmissions, such as the PDSCH. If the first DCI format is DCI format 1_X, all data scheduled by the first DCI are downlink transmissions.

[0071] The first DCI format includes a first indication field, namely a first information indication field. The first indication field can indicate one of the following scheduling information: time domain resource information, frequency domain resource information, modulation and coding scheme (MCS) information, redundancy version (RV) information, HARQ process information, priority information, phase tracking reference signal (PTRS)-DMRS association information, sounding reference signal (SRS) request information, channel status information (CSI) request information, etc. Different first indication fields are used to indicate different scheduling information.

[0072] The type of the first indication field is type 2, and the first indication field is used to indicate the scheduling information of each carrier in the at least two carriers scheduled simultaneously. Here, different first indication fields are used to indicate different scheduling information, and a first indication field is used to indicate the scheduling information of each carrier in the at least two carriers scheduled simultaneously corresponding to the first indication field. It can be understood that the first indication field includes the indication information of each carrier in the at least two carriers scheduled simultaneously, and the indication information of one carrier is used to indicate the scheduling information of the carrier. In one example, if the first indication field indicates the HARQ process number, and the first DCI schedules carrier 1 and carrier 2 at the same time, then the first indication field indicates the HARQ process number corresponding to the data transmission of carrier 1 and the HARQ process number corresponding to the data transmission of carrier 2. In one example, if the first indication field indicates the RV, and the first DCI schedules carrier 1, carrier 2, and carrier 3 at the same time, then the first indication field indicates the RV of carrier 1, the RV of carrier 2, and the RV of carrier 3.

[0073] The bit width of the first indication field is the first bit width, which is the size of the number of bits occupied by the first indication field in the first DCI format, and can be understood as the maximum number of valid bits included in the first indication field. The valid bit is the bit that includes valid information in the first indication field, and the bits occupied by the valid information included in the first indication field may be less than or equal to the first bit width.

[0074] The size of the first bit width is related to the carriers that the first DCI can schedule simultaneously. In an embodiment of the present application, multiple carriers that can be scheduled simultaneously by the first DCI constitute a carrier combination corresponding to the first DCI, i.e., a cell combination. The first DCI can simultaneously schedule a carrier combination in a carrier group or a carrier combination in a first carrier set. It is understandable that a carrier group includes at least one carrier set, and a carrier set includes at least one carrier combination. The first DCI formats corresponding to different carrier groups or carrier sets may be the same or different.

[0075] In an embodiment of the present application, after the terminal device is configured with a carrier group or carrier set, each carrier group or carrier set is configured with a carrier combination, and one carrier group or carrier set is configured to schedule the DCI format of the carrier combination in the carrier group or carrier set.

[0076] It is understandable that the DCI format configured for scheduling a carrier group or carrier set for a carrier combination in the carrier group or carrier set is the DCI format corresponding to the carrier group or carrier set. A first DCI using the first DCI format can schedule a carrier combination in the carrier group or carrier set corresponding to the first DCI format. If the first DCI schedules a carrier combination in a carrier group, the concept of a carrier set is directly skipped.

[0077] In some embodiments, the carrier group includes at least one of the following: a Master Cell Group (MCG), a Secondary Cell Group (SCG), or a Physical Uplink Control Channel (PUCCH) group.

[0078] For the first DCI format, the first DCI format is configured with a corresponding carrier group or carrier set, and the carrier group or carrier set is configured with at least one carrier combination. The first DCI format can schedule any carrier combination in the carrier group or carrier set.

[0079] In one example, the first carrier set corresponding to the first DCI format is {cell 1, cell 2, cell 3, cell 4}, and the carrier combinations in the first carrier set include: {Cell 1+cell 2}, {Cell 1+cell 3}, {Cell 1+cell 2+cell 3}, {Cell 1+cell 3+cell 4}, then the carrier combinations that can be scheduled by the first DCI format include: {Cell 1+cell 2}, {Cell 1+cell 3}, {Cell 1+cell 2+cell 3}, {Cell 1+cell 3+cell 4}.

[0080] The first DCI sent by the network device to the terminal device is used to schedule at least two carriers, and the first DCI adopts the first DCI format. The first indication field in the first DCI format is used to indicate the scheduling information of each carrier in the at least two carriers. The bit width of the first indication field is determined according to the carriers that the first DCI can schedule simultaneously, thereby clearly limiting the bit width of the first indication field, so that when the network device sends the first DCI to the terminal device, the terminal device receives and parses the first indication field in the DCI based on the first bit width, ensuring that the scheduling information indicated by the first indication field can be correctly transmitted between the network device and the terminal device.

[0081] In the embodiment of the present application, the first bit width is determined in at least one of the following two ways:

[0082] Determination method 1: The first bit width is determined according to the first parameter and the second parameter.

[0083] Determination method two: the first bit is determined according to the first parameter.

[0084] In the above determination method, the first parameter is determined according to the carriers that the first DCI can schedule simultaneously.

[0085] For determining method one

[0086] The value of the first parameter is M, and the value of the second parameter is N, then the first bit width is determined according to M and N.

[0087] In some embodiments, the first bit width is determined according to the product of the first parameter and the second parameter. In this case, the first bit width is equal to M*N.

[0088] In some embodiments, the first parameter includes at least one of the following:

[0089] a first number, where the first number is the maximum number of carriers that can be simultaneously scheduled by the first DCI;

[0090] The second number is the number of carriers included in the first carrier combination in the at least one carrier combination corresponding to the first DCI, and the first carrier combination is the carrier combination including the most carriers in the at least one carrier combination.

[0091] The first number may be configured by the network device and represents the maximum number of carriers that can be simultaneously scheduled by the first DCI, wherein the number of carriers simultaneously scheduled by the first DCI is less than or equal to the first number.

[0092] In one example, the first number of configured first DCIs is 3.

[0093] The second number is the maximum number of carriers included in the carrier combination corresponding to the first DCI. The carrier combination corresponding to the first DCI is a carrier combination that can be scheduled by the first DCI. The at least one carrier combination corresponding to the first DCI includes the carrier group corresponding to the first DCI or the carrier combination included in the first carrier set.

[0094] It can be understood that the cells and carriers in the embodiments of the present application can be described interchangeably, for example, a carrier combination can be described as a cell combination, and a carrier set can be described as a cell set.

[0095] In one example, the first carrier set corresponding to the first DCI format is {cell 1, cell 2, cell 3, cell 4}, and the carrier combinations in the first carrier set include: {Cell 1+cell 2}, {Cell 1+cell 3}, {Cell 1+cell 2+cell 3}, {Cell 1+cell 3+cell 4}, then the carrier combinations that can be scheduled by the first DCI format include: {Cell 1+cell 2}, {Cell 1+cell 3}, {Cell 1+cell 2+cell 3}, {Cell 1+cell 3+cell 4}, then the second quantity corresponding to the first DCI is 4.

[0096] In some embodiments, the second parameter includes at least one of the following:

[0097] The third quantity agreed upon in the agreement;

[0098] A fourth number, the fourth number is determined according to the configuration information of the first indication field corresponding to each carrier in the carrier group or the first carrier set, and the first carrier set is the carrier set corresponding to the first DCI format.

[0099] Here, the fourth number is determined according to the configuration information of the first indication field corresponding to each carrier in the carriers that can be scheduled by the first DCI. The configuration information can be understood as the indication information used to configure the carrier to correspond to the first indication field.

[0100] The first carrier set is the carrier set corresponding to the first DCI format. The first carrier set can be understood as the carrier set in which the terminal device is configured, to which the carrier combination that can be scheduled and configured with the first DCI format belongs, and the carrier combination in the first carrier set is configured to be scheduled by the first DCI format.

[0101] In some embodiments, the configuration information includes at least one of the following:

[0102] scheduling information of the carrier;

[0103] The number of bits corresponding to the carrier in the first indication field.

[0104] If the configuration information is scheduling information for a carrier, the fourth number is determined based on the number indicated by the scheduling information for each carrier in the first indication field. It can be understood that the scheduling information corresponding to a carrier can be pre-configured, and when the carrier is scheduled by the first DCI, the scheduling information corresponding to the carrier is included in the first indication field of the first DCI.

[0105] In one example, the first indication field is used to indicate the HARQ process number, and the fourth number is determined according to the number of HARQ processes corresponding to each carrier in the carrier group or the first carrier set.

[0106] If the configuration information is the number of bits corresponding to the carrier, the fourth number is determined based on the number of bits corresponding to each carrier in the first indication field. It can be understood that the number of bits corresponding to the carrier can be pre-configured, and when the carrier is scheduled by the first DCI, the first DCI includes scheduling information for the carrier in the first indication field, and the number of bits occupied by the scheduling information for the carrier is the number of bits.

[0107] In one example, the first indication field is used to indicate the HARQ process number, and the fourth number is determined according to the number of bits of the HARQ process number corresponding to each carrier in the carrier group or the first carrier set.

[0108] In some embodiments, the fourth number is one of the fifth numbers corresponding to each carrier in the carrier group or the first carrier set, and the fifth number is determined according to configuration information of the corresponding carrier.

[0109] The fifth number corresponding to the carrier may be the number indicated by the scheduling information corresponding to the carrier in the first indication field or the number of bits occupied by the scheduling information in the first indication field.

[0110] The fourth number is one of the fifth numbers corresponding to each carrier.

[0111] In an example, the first carrier combination corresponding to the first DCI includes: cell1, cell2, cell3, and cell3, and the fourth number is one of the fifth number of cell1, the fifth number of cell2, the fifth number of cell3, and the fifth number of cell4.

[0112] In some embodiments, the fourth number is a maximum value or a minimum value among the fifth numbers corresponding to the carriers in the carrier group or the first carrier set.

[0113] Here, the value of the fourth number is greater than or equal to 0, or the value of the fourth number is greater than 0.

[0114] In the case where the fifth quantity corresponding to a carrier included in the carrier group or the first carrier set is 0, the fourth quantity may be the minimum value of the fifth quantities corresponding to each carrier, which may be 0, or may be the minimum value of the fifth quantities other than 0 in the fifth quantities corresponding to each carrier in the carrier group or the first carrier set.

[0115] In one example, the first indication field indicates a HARQ process number, and the first carrier set corresponding to the first DCI includes cell1, cell2, cell3, and cell4. The number of bits of the corresponding HARQ process numbers configured for cell1 to cell4 are: 1, 1, 2, and 0, respectively; if the fourth number is the maximum number of bits corresponding to each carrier, the fourth number is 2; if the fourth number is the minimum number of bits corresponding to each carrier, the fourth number is 0; if the fourth number is the minimum value other than 0 among the number of bits corresponding to each carrier, the fourth number is 1.

[0116] In the determination method 1 provided in the embodiment of the present application, the first parameter can be understood as the maximum number of carriers that can be scheduled simultaneously by the first indication field, and the second number can be understood as the number of bits occupied by one carrier in the first indication field, thereby determining the bit width of the first indication field based on the product of the first parameter and the second parameter, thereby determining the number of bits of the first indication field according to the information (number of HARQ processes) configured by the network device for the first indication field of the first DCI, thereby reducing signaling complexity.

[0117] When the second parameter is the fourth number and the fourth number is the maximum value among the fifth numbers of each carrier, the method for determining the first indication field of the first DCI format used for the configured carrier set is simple, and the number of bits of the information indication field is saved, while ensuring that the first indication field can include the scheduling information of each carrier in the simultaneously scheduled carriers.

[0118] When the second parameter is the fourth number and the fourth number is the minimum value of the fifth numbers of each carrier, the maximum number of information indication field bits is saved as much as possible to achieve compression of the first DCI size.

[0119] In the first determination method, the first bit width may be determined in at least one of the following ways:

[0120] the product of the first quantity and the third quantity;

[0121] the product of the second quantity and the third quantity;

[0122] the product of the first quantity and the fourth quantity;

[0123] The product of the second quantity and the fourth quantity.

[0124] When the first parameter is the first quantity, when determining the first bit width of the first indication field, the network device or terminal device does not need to determine the carrier combination that the first DCI can schedule, but only needs to determine the first bit width based on the information configured by the network device.

[0125] When the first parameter is the second number, the network device or terminal device first determines the carrier combination that the first DCI can schedule when determining the first bit width of the first indication field, and determines the first bit width based on the analysis of the carrier combination that the first DCI can schedule.

[0126] When the second parameter is the third number, the network device or the terminal device does not need to determine the carrier group or the first carrier set corresponding to the first DCI when determining the first bit width of the first indication field.

[0127] When the second parameter is the third number, when determining the first bit width of the first indication field, the network device or terminal device needs to determine the carrier group or the first carrier set corresponding to the first DCI, determine the third number by analyzing the carrier group or the first carrier set, and thus determine the first bit width based on the third number.

[0128] For determination method 2

[0129] The value of the first parameter is M, and the first bit width is determined according to M.

[0130] In some embodiments, the first parameter is one of the sixth quantities corresponding to each carrier combination in the carrier group or the first carrier set, the sixth quantity is the sum of the fifth quantities corresponding to each carrier in the corresponding carrier combination, and the fifth quantity is determined according to the configuration information of the corresponding carrier.

[0131] In this embodiment of the present application, for a carrier group or a first carrier set, each of the included different carrier groups and each corresponds to a sixth quantity. For each sixth quantity, the sixth quantity is the sum of the fifth quantities corresponding to each carrier in the corresponding carrier combination. It is understood that, for a carrier combination, the sixth quantity corresponding to the carrier combination is the sum of the fifth quantities corresponding to each carrier in the carrier combination. The first parameter is one of the sixth quantities corresponding to each carrier combination.

[0132] In one example, the first carrier set corresponding to the first DCI format is {cell 1, cell 2, cell 3, cell 4}, and the carrier combinations in the first carrier set include: {Cell 1+cell 2}, {Cell 1+cell 3}, {Cell 1+cell 2+cell 3}, {Cell 1+cell 3+cell 4}, then the carrier combinations that can be scheduled by the first DCI format include: {Cell 1+cell 2}, {Cell 1+cell 3}, {Cell 1+cell 2+cell 3}, {Cell 1+cell 3+cell 4}, {Cell 1+cell 2}, {Cell 1+cell 3}, {Cell 1+cell 2+cell 3}, {Cell 1+cell 3+cell 4} respectively correspond to a sixth quantity; the sixth quantity corresponding to {Cell 1+cell 2} is the sum of the fifth quantity corresponding to Cell 1 and the fifth quantity corresponding to cell 2, {Cell 1+cell 3} is the sum of the fifth quantity corresponding to Cell 1 and the fifth quantity corresponding to cell 2, and {Cell 1+cell 3} is the sum of the fifth quantity corresponding to Cell 1 and the fifth quantity corresponding to cell 2. The sixth number corresponding to {Cell 1+cell 3} is the sum of the fifth number corresponding to Cell 1 and the fifth number corresponding to cell 3, and the sixth number corresponding to {Cell 1+cell 2+cell 3} is the sum of the fifth number corresponding to Cell 1, the fifth number corresponding to cell 2, and the fifth number corresponding to cell 3. The sixth number corresponding to {Cell 1+cell 3+cell 4} is the sum of the fifth number corresponding to Cell 1, the fifth number corresponding to cell 3, and the fifth number corresponding to cell 4; the first parameter corresponding to the first DCI is one of the sixth numbers corresponding to each carrier combination in the following carrier combinations: {Cell 1+cell 2}, {Cell 1+cell 3}, {Cell 1+cell 2+cell 3}, {Cell 1+cell 3+cell 4}.

[0133] In some embodiments, the first parameter is a maximum value or a minimum value of sixth quantities corresponding to the carrier group or each carrier combination in the first carrier set.

[0134] For the second determination method, the network device or terminal device determines the number of bits required for the first indication field based on all carrier combinations that can be scheduled, which can reduce redundant bit information as much as possible, compress the size of the DCI format, and reduce decoding complexity.

[0135] In actual applications, the network device sends first indication information to the terminal device, where the first indication information is used to indicate a method for determining the first bit width.

[0136] The network device notifies the terminal device of the current determination method of the first bit width by sending the first indication information, so that the terminal device can determine the first bit width of the first indication field in a corresponding determination method.

[0137] In some embodiments, in the first DCI, the number of valid bits included in the first indication field is the first bit width or the second bit width, the second bit width is the bit width corresponding to the second carrier combination scheduled by the first DCI, and the second carrier combination includes the at least two carriers.

[0138] Here, the valid bits in the first indication field are the bits occupied by the valid information carried by the first indication field, and the number of valid bits in the first DCI is the first bit width or the second bit width, wherein the second bit width is the bit width corresponding to the second carrier combination currently scheduled by the first DCI. It can be understood that the bit width of the first indication field is the first bit width, and the bits occupied by the valid information in the first indication field are all or part of the bits of the first indication field.

[0139] The valid information in the first indication field can be understood as information that needs to be parsed by the terminal device.

[0140] In some embodiments, the second bit width is determined according to the fifth number of each carrier in the second carrier combination or the seventh number corresponding to the second carrier combination, the seventh number is the sum of the fifth numbers corresponding to each carrier in the second carrier combination, and the fifth number is determined according to the configuration information of the corresponding carrier.

[0141] In one example, the first carrier set corresponding to the first DCI format is {cell 1, cell 2, cell 3, cell 4}, and the carrier combinations in the first carrier set include: {Cell 1+cell 2}, {Cell 1+cell 3}, {Cell 1+cell 2+cell 3}, {Cell 1+cell 3+cell 4}, then the carrier combinations that can be scheduled by the first DCI format include: {Cell 1+cell 2}, {Cell 1+cell 3}, {Cell 1+cell 2+cell 3}, {Cell 1+cell 3+cell 4}, and the carrier combination currently scheduled by the first DCI sent by the network device to the terminal device is {Cell 1+cell 3}, then the number of first bits in the first indication field is the first bit width or the second bit width, and the second bit width is the sum of the fifth number corresponding to Cell 1 and the fifth number corresponding to cell 3.

[0142] In some embodiments, the number of valid bits is less than or equal to the first bit width.

[0143] It is understandable that the number of bits of valid information in the first indication field is not greater than the first bit width.

[0144] In some embodiments, parsing of the valid information included in the first indication field starts from a high bit or a low bit of the first indication field.

[0145] When the terminal device receives the first DCI and parses the valid information in the first indication field in the first DCI, it starts parsing from the high bit or the low bit of the first indication field.

[0146] The high bit can be understood as the last bit received in the first indication field, and the low bit can be understood as the first bit received in the first indication field.

[0147] It is understandable that when the scheduling information indicated by the first DCI is mapped to the scheduled carriers, the mapping is performed from large to small or from small to large according to the carrier identifiers (cell ids) of the scheduled carriers in the second carrier combination.

[0148] In some embodiments, if the number of valid bits is less than the first bit width, the first bit is a preset value or is reserved, and the first bit is the bit in the first indication field other than the valid bits.

[0149] When the first bit is reserved, the terminal device does not parse the first bit in the first indication field.

[0150] In one example, the first bit width is 9, and the first indication field indicating the HARQ process number in the first DCI includes 9 bits {b1, b2, b3, b4, b5, b6, b7, b8, b9}; when the first DCI format schedules carrier combination 1 {cell1+cell2}, the actual number of bits required by cell1 is 3, and the actual number of bits required by cell2 is 4, then {b1, b2, b3} is used to indicate the HARQ process number of cell1, {b4, b5, b6, b7} is used to indicate the HARQ process number of cell2, and the remaining bits b8 to b9 are set to preset values ​​0 or 1, or set to reserved, and the terminal device parses {b1, b2, b3} to obtain the HARQ process number of cell1, and parses {b4, b5, b6, b7} to obtain the HARQ process number of cell2. number, and the terminal parses or does not parse the remaining bits b8~b9; when the first DCI format schedules carrier combination 1 {cell1+cell3}, the actual number of bits required by cell1 is 3, and the actual number of bits required by cell3 is 2, then {b1, b2, b3} is used to indicate the HARQ process number of cell1, and {b4, b5} is used to indicate the HARQ process number of cell3. The remaining bits b6~b9 are set to the preset value 0 or 1, or set to reserved. The terminal device parses {b1, b2, b3} to obtain the HARQ process number of cell1 and parses {b4, b5} to obtain the HARQ process number of cell3. The terminal device parses or does not parse the remaining bits b6~b9.

[0151] In an embodiment of the present application, the terminal device can determine the number of bits required for the HARQ process number indication field based on all carrier combinations (cell combinations) that can be scheduled, thereby reducing redundant bit information as much as possible, compressing the size of the DCI format, and reducing decoding complexity.

[0152] Below, the wireless communication method provided in the embodiment of the present application is further described.

[0153] The first downlink control information format is used to schedule multiple data transmissions (or to schedule multiple carriers), where different data transmissions in the multiple data transmissions are carried on different carriers, and one carrier carries one data transmission. The multiple data transmissions are all uplink transmissions (PUSCH) or downlink transmissions (PDSCH). The first downlink control information format includes a first information indication field. The first bit width corresponding to the first information indication field is determined according to the first parameter and / or the second parameter. The first information indication field is used to indicate scheduling information or transmission configuration information for multiple data transmissions (or for indicating scheduling information or transmission configuration information for data transmission on multiple carriers). The scheduling information or transmission configuration information may include: time domain resource information, frequency domain resource information, modulation and coding scheme (MCS) information, redundancy version (RV) information, HARQ process information, priority information, phase tracking reference signal (PTRS)-DMRS association information, sounding reference signal (SRS) request information, channel status information (CSI) request information, etc.

[0154] There are two ways to determine the first bit width:

[0155] Solution 1: The first bit width corresponding to the first information indication field is determined according to the product of the values ​​of the first parameter and the second parameter.

[0156] Solution 2: The first bit width corresponding to the first information indication field is determined according to the first parameter.

[0157] In solution 1, the first parameter is a value agreed upon by the protocol, or a maximum value or a minimum value of the third parameter corresponding to each carrier in the carrier set corresponding to the first downlink control information format.

[0158] The third parameter is determined based on the configuration information of the corresponding first information indication field of a carrier, and is the number indicated by the configuration information of the carrier or the number of bits required for the configuration information. Taking the first information indication field indicating the HARQ process number as an example, the third parameter is the number of HARQ processes configured for a carrier, or the number of bits required to indicate the HARQ process (number) for a carrier; taking the first information indication field indicating the number of RVs as an example, the third parameter is the RV configured for a carrier, or the number of bits required to indicate the RV for a carrier.

[0159] In Solution 1, the second parameter is the maximum number of carriers or scheduled data transmissions that can be scheduled by the first downlink control information format. The second parameter is determined according to the first configuration information, or the second parameter is the maximum number of carriers included in the carrier combination.

[0160] In solution 2, the first parameter is the maximum value of the fourth parameter corresponding to the schedulable carrier combination corresponding to the first downlink control information format. The fourth parameter is the sum of the values ​​of the third parameters corresponding to each carrier in the schedulable carrier combination.

[0161] In the embodiment of the present application, the schedulable carrier combination corresponding to the first downlink control information format includes at least one of the following:

[0162] All carrier combinations included (configured) in the carrier set corresponding to the first downlink control information format;

[0163] All (configured) carrier combinations in the carrier group (MCG, SCG, or PUCCH group) configured for the terminal device.

[0164] In the first DCI format, the number of bits corresponding to the first information indication field or the number of valid information bits can be the first bit width corresponding to the first information indication field in the first downlink information format, and can be the second bit width corresponding to the first carrier combination scheduled by the first downlink information (in this case, it is necessary to first parse the scheduled first carrier combination to determine the second bit width, and then parse the indication information), and the second bit width is determined according to the third parameter corresponding to each carrier in the first carrier combination or the fourth parameter corresponding to the first carrier combination.

[0165] Parsing of valid information in the first information indication field begins with the high bit or the low bit. The number of bits of valid information is no greater than the first bit width. (If the number of valid bits is less than the configured / determined bit width, the remaining bits, excluding the valid bits, are set to a preset value (0 or 1) or are set to reserved (the terminal does not parse or ignores them)).

[0166] Each carrier set corresponds to a first DCI format, and the bit widths of the first downlink control information formats corresponding to different carrier sets are the same or different, and each carrier set includes all carriers in all carrier combinations that can be scheduled by the first control information format.

[0167] The carrier set is configured through the network; the carrier combination included in the carrier set is configured through the network.

[0168] The wireless communication method provided in the embodiments of the present application can be implemented as but not limited to the following embodiments 1 to 5.

[0169] Example 1

[0170] The network configuration {cell 1 to cell 4} is a first set of cells, ie, a first carrier set, and a carrier combination of carriers that can be scheduled simultaneously in the first carrier set, ie, a cell combination, as shown in Table 1.

[0171] Table 1. Carrier combination examples

[0172] Cell combination index Co-scheduled cells or cell combinations 1Cell 1+cell 2 2Cell 3+cell 4 3Cell 1+cell 3 4Cell 1+cell 2+cell 3 5Cell 1+cell 3+cell 4

[0173] The DCI formats for scheduling these carrier combinations are DCI formats 0_X or 1_X. Format 0_X is used to schedule uplink transmission (PUSCH), and format 1_X is used to schedule downlink transmission (PDSCH). The maximum number of carriers that can be scheduled by DCI format 0_X is 3, and the maximum number of carriers that can be scheduled by DCI format 1_X is 3.

[0174] For each carrier in the first carrier set, the number of HARQ processes supported is configured, for example: cell1-8, cell2-16, cell3-4, cell4-16. The number of bits of the indication information indicating the HARQ process number is the logarithm of the number of supported HARQ processes times 2, that is, {log2(8), log2(16), log2(4), log2(16)} = {3, 4, 2, 4} bits.

[0175] When determining the bit width of the HARQ process number indication field in DCI format 0_X, the following method can be used:

[0176] In method 1A, the protocol stipulates that the second number is 4 bits. The maximum number of carriers that can be scheduled in DCI format 0_X is 3. Therefore, the bit width of the HARQ process number indication field in DCI format 0_X is 4*3=12 bits. Therefore, when transmitting or parsing DCI information according to DCI format 0_X, the bit information used for the HARQ process number indication field is 12 bits. Each 4 bits is used for one carrier. If the number of scheduled carriers is less than 3, each 4 bits is used for one scheduled carrier, starting from the low bit or the high bit.

[0177] For mode 1A, the method for determining the HARQ process number indication field in the DCI format 0_X used for the configured carrier set is simple and can be determined based on the configured maximum number of scheduled carriers.

[0178] Method 1B: In the first carrier set, the maximum number of HARQ process number indication bits corresponding to each carrier is 4, and the maximum number of carriers that can be scheduled by DCI format 0_X is 3. Therefore, the bit width used for the HARQ process number indication field in DCI format 0_X is 4*3=12 bits.

[0179] Method 1C, in the first carrier set, among the number of HARQ processes supported by each carrier, the maximum number of bits used to determine the HARQ process number indication corresponding to each carrier is used. The maximum number of HARQ processes supported is 16, and the corresponding number of HARQ process number indication bits is log2(16)=4. The maximum number of carriers that can be scheduled by DCI format 0_X is 3, so the bit width used for the HARQ process number indication field in DCI format 0_X is 4*3=12.

[0180] For mode 1C, the number of bits in the information indication field can be appropriately saved according to the actual cell combination configuration.

[0181] Method 1D: In the first carrier set, the minimum number of HARQ process number indication bits corresponding to each carrier is 2, and the maximum number of carriers that can be scheduled by DCI format 0_X is 3. Then the bit width used for the HARQ process number indication field in DCI format 0_X is 2*3=6.

[0182] Method 1E, in the first carrier set, the minimum number of HARQ processes supported by each carrier is used to determine the number of HARQ process number indication bits corresponding to each carrier. The maximum number of HARQ processes supported is 4, and the corresponding number of HARQ process number indication bits is log2(4)=2. The maximum number of carriers that can be scheduled by DCI format 0_X is 3, so the bit width used for the HARQ process number indication field in DCI format 0_X is 2*3=6.

[0183] For mode 1E, the maximum number of bits in the information indication field can be saved, thereby achieving DCI size compression.

[0184] Method 1F: Calculate the number of bits used for the HARQ process number for each carrier combination in the first carrier set, and obtain Table 2.

[0185] Table 2. Example of bit numbers corresponding to carrier combinations

[0186]

[0187] The maximum number of bits corresponding to all carrier combinations is 9, so the bit width of the HARQ process number indication field in the DCI format 0_X is 9.

[0188] For mode 1F, the number of bits required for the HARQ process number indication field is determined based on all schedulable cell combinations, which can reduce redundant bit information as much as possible, compress the size of the DCI format, and reduce decoding complexity.

[0189] When transmitting or parsing DCI information according to DCI format 0_X, the number of bits used for the HARQ process number indication field is 9. The number of bits corresponding to each carrier is determined based on the actual scheduled carrier combination, and parsing starts with the high-order or low-order bits. If the number of bits corresponding to the actual scheduled carrier combination is less than 9, the excess bits are set to 0 or 1. Alternatively, the number of bits used for the HARQ process number indication field in the DCI is equal to the number of bits corresponding to the actual scheduled carrier combination.

[0190] The wireless communication method provided in the first embodiment determines the number of bits according to existing configuration information (the number of HARQ processes), thereby reducing signaling complexity.

[0191] Example 2

[0192] The network configuration {cell 1 to cell 4} is a first set of cells, ie, a first carrier set, and a carrier combination of carriers that can be scheduled simultaneously in the first carrier set, ie, a cell combination, as shown in Table 1.

[0193] The DCI formats for scheduling these carrier combinations are DCI formats 0_X or 1_X. Format 0_X is used to schedule uplink transmission (PUSCH), and format 1_X is used to schedule downlink transmission (PDSCH). The maximum number of carriers that can be scheduled by DCI format 0_X is 3, and the maximum number of carriers that can be scheduled by DCI format 1_X is 3.

[0194] For each carrier in the first carrier set, configure the corresponding HARQ process number indicator bit number, for example: cell1-1, cell2-3, cell3-2, cell4-4. This configuration can be configured for DCI format 0_X, or it can be multiplexed with configuration information for other DCI formats.

[0195] When determining the bit width of the HARQ process number indication field in DCI format 0_X, the following method can be used:

[0196] In mode 2A, the protocol stipulates that the second number is 4 bits. The maximum number of carriers that can be scheduled in DCI format 0_X is 3. Therefore, the bit width of the HARQ process number indication field in DCI format 0_X is 4*3=12 bits. Therefore, when transmitting or parsing DCI information according to DCI format 0_X, the bit information used for the HARQ process number indication field is 12 bits. Each 4 bits is used for one carrier. If the number of scheduled carriers is less than 3, each 4 bits is used for one scheduled carrier, starting from the low bit or the high bit.

[0197] Mode 2B: In the first carrier set, the maximum number of HARQ process number indication bits corresponding to each carrier is 4, and the maximum number of carriers that can be scheduled by DCI format 0_X is 3. Therefore, the bit width used for the HARQ process number indication field in DCI format 0_X is 4*3=12.

[0198] Method 2C: In the first carrier set, the minimum number of HARQ process number indication bits corresponding to each carrier is 1, and the maximum number of carriers that can be scheduled by DCI format 0_X is 3. Then the bit width used for the HARQ process number indication field in DCI format 0_X is 1*3=3.

[0199] Method 2D: Calculate the number of bits used for the HARQ process number for each carrier combination in the first carrier set, and obtain Table 3:

[0200] The maximum number of bits corresponding to all carrier combinations is 7, so the bit width of the HARQ process number indication field in DCI format 0_X is 7.

[0201] Table 3. Example of bit numbers corresponding to carrier combinations

[0202]

[0203] When transmitting or parsing DCI information according to DCI format 0_X, the number of bits used for the HARQ process number indication field is 7 bits. The number of bits corresponding to each carrier is determined based on the actual scheduled carrier combination, and the parsing starts from the high-order or low-order bits. If the number of bits corresponding to the actual scheduled carrier combination is less than 9, the excess bits are set to 0 or 1. Alternatively, the number of bits used for the HARQ process number indication field in the DCI information is equal to the number of bits corresponding to the actual scheduled carrier combination.

[0204] Example 3

[0205] The network configuration {cell 1 to cell 4} is a first set of cells, ie, a first carrier set, and a carrier combination of carriers that can be scheduled simultaneously in the first carrier set, ie, a cell combination, as shown in Table 4.

[0206] Table 4. Carrier combination examples

[0207] Cell combination index Co-scheduled cell or cell combination 1Cell 1+cell 2 2Cell 3+cell 4 3Cell 1+cell 3 4Cell 1+cell 2+cell 3 5Cell 1+cell 3+cell 4 6Cell 1+cell 2+cell 3+cell 4

[0208] The DCI formats for scheduling these carrier combinations are DCI formats 0_X or 1_X. Format 0_X is used to schedule uplink transmission (PUSCH), and format 1_X is used to schedule downlink transmission (PDSCH). The maximum number of carriers that can be scheduled by DCI format 0_X is 4, and the maximum number of carriers that can be scheduled by DCI format 1_X is 4.

[0209] For each carrier in the first carrier set, configure the corresponding Redundancy version indication bit number, for example: cell1-1, cell2-1, cell3-2, cell4-0. This configuration can be configured for DCI format 0_X, or it can be reused for configuration information of other DCI formats.

[0210] When determining the bit width of the Redundancy version indication field in DCI format 0_X, the following method can be used:

[0211] In mode 3A, the protocol stipulates that the second number is 2 bits. The maximum number of carriers that can be scheduled in DCI format 0_X is 4. Therefore, the bit width used for the Redundancy Version Indication field in DCI format 0_X is 2*4=8 bits. Therefore, when transmitting or parsing DCI information according to DCI format 0_X, the bit information used for the Redundancy Version Indication field is 8 bits. Every 2 bits are used for one carrier. If the number of scheduled carriers is less than 4, every 2 bits are used for one scheduled carrier, starting from the low bit or the high bit.

[0212] Method 3B: In the first carrier set, the maximum number of redundancy version indication bits corresponding to each carrier is 2, and the maximum number of carriers that can be scheduled by DCI format 0_X is 4. Therefore, the bit width for the redundancy version indication field in DCI format 0_X is 2*4=8 bits.

[0213] Method 3C: In the first carrier set, the minimum number of redundancy version indication bits corresponding to each carrier is 1, and the maximum number of carriers that can be scheduled by DCI format 0_X is 4. Therefore, the bit width for the redundancy version indication field in DCI format 0_X is 0*4=0 bit.

[0214] Method 3D, calculates the number of bits used for the Redundancy version for each carrier combination in the first carrier set, and Table 5 can be obtained. The maximum number of bits corresponding to all carrier combinations is 4, so the bit width used for the Redundancy version indication field in DCI format 0_X is 4.

[0215] Table 5. Example of bit numbers corresponding to carrier combinations

[0216] Cell combination index Number of bits of jointly scheduled cells or cell combinations 1 Cell 1 + cell 2 1 + 1 = 2 2 Cell 3 + cell 4 2 + 0 = 2 3 Cell 1 + cell 3 1 + 2 = 3 4 Cell 1 + cell 2 + cell 3 1 + 1 + 2 = 4 5 Cell 1 + cell 3 + cell 4 1 + 2 + 0 = 3 6 Cell 1 + cell 2 + cell 3 + cell 4 1 + 1 + 2 + 0 = 4

[0217] When transmitting or parsing DCI information according to DCI format 0_X, the bit information used for the Redundancy Version Indication field is 4 bits. The number of bits corresponding to each carrier is determined based on the actual scheduled carrier combination. When parsing, start from the high or low bits. The number of bits corresponding to each scheduled carrier is determined according to the configuration. If the number of bits corresponding to the actual scheduled carrier combination is less than 4, the excess bits are set to 0 or 1. Alternatively, the bit information used for the Redundancy Version Indication field in the DCI information is equal to the number of bits corresponding to the actual scheduled carrier combination.

[0218] Example 4

[0219] The network configuration {cell 1 to cell 4} is a first set of cells, ie, a first carrier set, and a carrier combination of carriers that can be scheduled simultaneously in the first carrier set, ie, a cell combination, as shown in Table 4.

[0220] The DCI formats for scheduling these carrier combinations are DCI formats 0_X or 1_X. Format 0_X is used to schedule uplink transmission (PUSCH), and format 1_X is used to schedule downlink transmission (PDSCH). The maximum number of carriers that can be scheduled by DCI format 0_X is 4, and the maximum number of carriers that can be scheduled by DCI format 1_X is 4.

[0221] For each carrier in the first carrier set, the number of PTRS-DMRS association indication bits corresponding to the carrier is determined according to the configured PTRS-UplinkConfig, transform precoder, and maxRank, for example: cell1-2, cell2-0, cell3-2, and cell4-2.

[0222] When determining the bit width of the PTRS-DMRS association indication field in DCI format 0_X, the following method can be used:

[0223] Mode 4A: The protocol stipulates that the second number is 2 bits. The maximum number of carriers that can be scheduled by DCI format 0_X is 4. Therefore, the bit width of the PTRS-DMRS association indication field in DCI format 0_X is 2*4=8 bits. Therefore, when transmitting or parsing DCI information according to DCI format 0_X, the bit information used for the PTRS-DMRS association indication field is 8 bits. Every 2 bits are used for one carrier. If the number of scheduled carriers is less than 4, starting from the low bit or the high bit, every 2 bits are used for one scheduled carrier.

[0224] Mode 4B, in the first carrier set, the maximum number of PTRS-DMRS association indication bits corresponding to each carrier is 2, and the maximum number of carriers that can be scheduled by DCI format 0_X is 4. Then the bit width used for the PTRS-DMRS association indication field in DCI format 0_X is 2*4=8bit.

[0225] Method 4C: In the first carrier set, the minimum number of non-zero PTRS-DMRS association indication bits corresponding to each carrier is 2, and the maximum number of carriers that can be scheduled by DCI format 0_X is 4. Then the bit width used for the PTRS-DMRS association indication field in DCI format 0_X is 2*4=8bit.

[0226] Method 4D: Calculate the number of bits used for PTRS-DMRS association for each carrier combination in the first carrier set, and obtain Table 6. The maximum number of bits corresponding to all carrier combinations is 6, so the bit width used for the PTRS-DMRS association indication field in DCI format 0_X is 6.

[0227] Table 6. Example of bit numbers corresponding to carrier combinations

[0228] Cell combination index Number of bits of jointly scheduled cells or cell combinations 1 Cell 1 + cell 22 + 0 = 22 Cell 3 + cell 42 + 2 = 43 Cell 1 + cell 32 + 2 = 44 Cell 1 + cell 2 + cell 32 + 0 + 2 = 45 Cell 1 + cell 3 + cell 42 + 2 + 2 = 66 Cell 1 + cell 2 + cell 3 + cell 42 + 0 + 2 + 2 = 6

[0229] When transmitting or parsing DCI information according to DCI format 0_X, the bit information used for the PTRS-DMRS association indication field is 4 bits. The number of bits corresponding to each carrier is determined based on the actual scheduled carrier combination. When parsing, start from the high bit or low bit. The number of bits corresponding to each scheduled carrier is determined according to the configuration. If the number of bits corresponding to the actual scheduled carrier combination is less than 4, the excess bits are set to 0 or 1. Alternatively, in the DCI information, the bit information used for the PTRS-DMRS association indication field is equal to the number of bits corresponding to the actual scheduled carrier combination.

[0230] Example 5

[0231] The network configuration {cell 1 to cell 4} is a first set of cells, ie, a first carrier set, and a carrier combination of carriers that can be scheduled simultaneously in the first carrier set, ie, a cell combination, as shown in Table 7.

[0232] Table 7. Carrier combination examples

[0233] Cell combination index Co-scheduled cells or cell combinations 1Cell 1+cell 2 2Cell 1+cell 3 3Cell 1+cell 2+cell 3

[0234] The DCI formats for scheduling these carrier combinations are DCI formats 0_X or 1_X. Format 0_X is used to schedule uplink transmission (PUSCH), and format 1_X is used to schedule downlink transmission (PDSCH). The maximum number of carriers that can be scheduled by DCI format 0_X is 3, and the maximum number of carriers that can be scheduled by DCI format 1_X is 3.

[0235] For each carrier in the first carrier set, the number of HARQ processes supported is configured, for example: cell1-8, cell2-16, cell3-4, cell4-16. The number of HARQ process number indication information bits corresponding to the number of HARQ processes supported is the logarithm of 2, that is, {log2(8), log2(16), log2(4), log2(16)} = {3, 4, 2, 4} bits.

[0236] Regarding the above method of using M*N to determine the bit width of the indicator field in DCI format 0_X (M is the maximum, minimum, or fixed number of bits corresponding to each carrier), assuming that each carrier corresponds to 4 bits of information, the bit width of the HARQ process number indicator field in DCI format 0_X is 4*3=12. The following methods can be used to interpret the HARQ process number indicator field:

[0237] Mode 5A: When interpreting DCI format 0_X, the number of bits used for the HARQ process number indication field is 12. Each 4 bits corresponds to one carrier, and is mapped from large to small or from small to large according to the carrier identifier (cell ID).

[0238] For example, the 12-bit information is {b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12}, and the information is mapped in descending order of the carrier identifier (cell ID) as an example.

[0239] If DCI format 0_X schedules carrier combination 1 {cell1+cell2}, {b1, b2, b3, b4} are used to indicate the HARQ process number of cell1, {b5, b6, b7, b8} are used to indicate the HARQ process number of cell2, and the remaining bits b9 to b12 are set to the preset value 0 or 1, or set to reserved, and the terminal does not parse.

[0240] If DCI format 0_X schedules carrier combination 1 {cell1+cell3}, {b1, b2, b3, b4} are used to indicate the HARQ process number of cell1, {b5, b6, b7, b8} are used to indicate the HARQ process number of cell3, and the remaining bits b9 to b12 are set to the preset value 0 or 1, or set to reserved, and the terminal does not parse.

[0241] If DCI format 0_X schedules carrier combination 1 {cell1+cell2+cell3}, {b1, b2, b3, b4} are used to indicate the HARQ process number of cell1, {b5, b6, b7, b8} are used to indicate the HARQ process number of cell2, and {b9, b10, b11, b12} are used to indicate the HARQ process number of cell2.

[0242] Method 5B: Parse according to the actual number of bits required, and map the bit information corresponding to each carrier from large to small or small to large according to the carrier identifier (cell ID). For example, the 12-bit information is {b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12}.

[0243] If DCI format 0_X schedules carrier combination 1 {cell1+cell2}, the actual number of bits required by cell1 is 3, and the actual number of bits required by cell2 is 4, then {b1, b2, b3} is used to indicate the HARQ process number of cell1, {b4, b5, b6, b7} is used to indicate the HARQ process number of cell2, and the remaining bits b8 to b12 are set to the preset value 0 or 1, or set to reserved, and the terminal does not parse.

[0244] If DCI format 0_X schedules carrier combination 1 {cell1+cell3}, the actual number of bits required for cell1 is 3, and the actual number of bits required for cell3 is 2, then {b1, b2, b3} is used to indicate the HARQ process number of cell1, {b4, b5} is used to indicate the HARQ process number of cell3, and the remaining bits b6 to b12 are set to the preset value 0 or 1, or set to reserved, and the terminal does not parse.

[0245] If the DCI format 0_X schedules the carrier combination 1 {cell1+cell2+cell3}, the actual number of bits required by cell1 is 3, the actual number of bits required by cell2 is 4, and the actual number of bits required by cell3 is 2, then {b1, b2, b3} is used to indicate the HARQ process number of cell1, {b4, b5, b6, b7} is used to indicate the HARQ process number of cell2, and {b8, b9} is used to indicate the HARQ process number of cell3. The remaining bits b10 to b12 are set to the preset value 0 or 1, or set to reserved, and the terminal does not parse.

[0246] Regarding the method for determining the bit width of the indicator field in DCI format 0_X based on the maximum number of bits corresponding to the carrier combination, based on the configured carrier combination, the bit width of the HARQ process number indicator field in DCI format 0_X is the maximum value among {3+4, 3+2, 3+4+2}, i.e., 9 bits. The following methods can be used to interpret the HARQ process number indicator field:

[0247] Parse according to the actual number of bits required, and map the bit information corresponding to each carrier from large to small or from small to large according to the carrier identifier (cell ID). For example, the 9-bit information is {b1, b2, b3, b4, b5, b6, b7, b8, b9}, and map the information in order from large to small according to the carrier identifier (cell ID) as an example.

[0248] If DCI format 0_X schedules carrier combination 1 {cell1+cell2}, the actual number of bits required by cell1 is 3, and the actual number of bits required by cell2 is 4, then {b1, b2, b3} is used to indicate the HARQ process number of cell1, {b4, b5, b6, b7} is used to indicate the HARQ process number of cell2, and the remaining bits b8~b9 are set to the preset value 0 or 1, or set to reserved, and the terminal does not parse.

[0249] If DCI format 0_X schedules carrier combination 1 {cell1+cell2}, the actual number of bits required by cell1 is 3, and the actual number of bits required by cell2 is 4, then {b1, b2, b3} is used to indicate the HARQ process number of cell1, {b4, b5, b6, b7} is used to indicate the HARQ process number of cell2, and the remaining bits b8~b9 are set to the preset value 0 or 1, or set to reserved, and the terminal does not parse.

[0250] If DCI format 0_X schedules carrier combination 1 {cell1+cell2+cell3}, the actual number of bits required by cell1 is 3, the actual number of bits required by cell2 is 4, and the actual number of bits required by cell3 is 2, then {b1, b2, b3} is used to indicate the HARQ process number of cell1, {b4, b5, b6, b7} is used to indicate the HARQ process number of cell2, and {b8, b9} is used to indicate the HARQ process number of cell3.

[0251] The wireless communication method provided in the embodiment of the present application provides a clear method for determining the bit width of the Type-2 indicator field in the DCI format that can schedule data transmission on multiple carriers, which helps to determine the size of the DCI format and is beneficial for the terminal to perform DCI blind detection and information parsing.

[0252] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0253] It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply a precedence in 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. In addition, in the embodiments of the present application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data, where "downlink" is used to indicate the first direction of transmission of signals or data from a site to a user equipment in a cell, "uplink" is used to indicate the second direction of transmission of signals or data from a user equipment in a cell to a site, and "sidelink" is used to indicate the third direction of transmission of signals or data from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist. Specifically, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0254] FIG5 is a schematic diagram of the structure of a network device provided in an embodiment of the present application. As shown in FIG5 , the network device 500 includes:

[0255] The first communication unit 501 is configured to send first downlink control information DCI to the terminal device, where the first DCI is used to simultaneously schedule at least two carriers. The first DCI adopts a first DCI format, and the first DCI format includes a first indication field. The first indication field is used to indicate scheduling information of each carrier in the at least two carriers. The bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that can be simultaneously scheduled by the first DCI.

[0256] In actual applications, the network device 500 further includes a storage unit configured to store at least one scheduling group corresponding to the first DCI and configuration information corresponding to the carrier group and each carrier in the first carrier set.

[0257] In some embodiments, the first bit width is determined according to the first parameter and the second parameter, and the first parameter is determined according to the carriers that the first DCI can schedule simultaneously.

[0258] In some embodiments, the first bit width is determined according to the product of the first parameter and the second parameter.

[0259] In some embodiments, the first parameter includes at least one of the following:

[0260] a first number, where the first number is the maximum number of carriers that can be simultaneously scheduled by the first DCI;

[0261] The second number is the number of carriers included in the first carrier combination in the at least one carrier combination corresponding to the first DCI, and the first carrier combination is the carrier combination including the most carriers in the at least one carrier combination.

[0262] In some embodiments, the second parameter includes at least one of the following:

[0263] The third quantity agreed upon in the agreement;

[0264] A fourth number, the fourth number is determined according to the configuration information of the first indication field corresponding to each carrier in the carrier group or the first carrier set, and the first carrier set is the carrier set corresponding to the first DCI format.

[0265] In some embodiments, the fourth number is one of the fifth numbers corresponding to each carrier in the carrier group or the first carrier set, and the fifth number is determined according to configuration information of the corresponding carrier.

[0266] In some embodiments, the fourth number is a maximum value or a minimum value among the fifth numbers corresponding to the carriers in the carrier group or the first carrier set.

[0267] In some embodiments, the first bit width is determined according to the first parameter, and the first parameter is determined according to carriers that can be simultaneously scheduled by the first DCI.

[0268] In some embodiments, the first parameter is one of the sixth quantities corresponding to each carrier combination in the carrier group or the first carrier set, the sixth quantity is the sum of the fifth quantities corresponding to each carrier in the corresponding carrier combination, and the fifth quantity is determined according to the configuration information of the corresponding carrier.

[0269] In some embodiments, the first parameter is a maximum value or a minimum value of sixth quantities corresponding to the carrier group or each carrier combination in the first carrier set.

[0270] In some embodiments, the carrier group includes at least one of the following:

[0271] Primary cell group MCG, secondary cell group SCG or physical uplink control channel PUCCH group.

[0272] In some embodiments, in the first DCI, the number of valid bits included in the first indication field is the first bit width or the second bit width, the second bit width is the bit width corresponding to the second carrier combination scheduled by the first DCI, and the second carrier combination includes the at least two carriers.

[0273] In some embodiments, the second bit width is determined according to the fifth number of each carrier in the second carrier combination or the seventh number corresponding to the second carrier combination, the seventh number is the sum of the fifth numbers corresponding to each carrier in the second carrier combination, and the fifth number is determined according to the configuration information of the corresponding carrier.

[0274] In some embodiments, the number of valid bits is less than or equal to the first bit width.

[0275] In some embodiments, parsing of the valid information included in the first indication field starts from a high bit or a low bit of the first indication field.

[0276] In some embodiments, if the number of valid bits is less than the first bit width, the first bit is a preset value or is reserved, and the first bit is a bit in the first indication field except the first valid bit.

[0277] In some embodiments, the configuration information includes at least one of the following:

[0278] scheduling information of the carrier;

[0279] The number of bits corresponding to the carrier.

[0280] FIG6 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. As shown in FIG6 , the terminal device 600 includes:

[0281] The second communication unit 601 is configured to receive first downlink control information DCI sent by a network device, where the first DCI is used to simultaneously schedule at least two carriers. The first DCI adopts a first DCI format, and the first DCI format includes a first indication field. The first indication field is used to indicate scheduling information of each carrier in the at least two carriers. The bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that can be simultaneously scheduled by the first DCI.

[0282] In actual applications, the terminal device 600 further includes a storage unit configured to store configuration information corresponding to at least one scheduling group corresponding to the first DCI and a carrier group or each carrier in the first carrier set.

[0283] In some embodiments, the first bit width is determined according to the first parameter and the second parameter, and the first parameter is determined according to the carriers that the first DCI can schedule simultaneously.

[0284] In some embodiments, the first bit width is determined according to the product of the first parameter and the second parameter.

[0285] In some embodiments, the first parameter includes at least one of the following:

[0286] a first number, where the first number is the maximum number of carriers that can be simultaneously scheduled by the first DCI;

[0287] The second number is the number of carriers included in the first carrier combination in the at least one carrier combination corresponding to the first DCI, and the first carrier combination is the carrier combination including the most carriers in the at least one carrier combination.

[0288] In some embodiments, the second parameter includes at least one of the following:

[0289] The third quantity agreed upon in the agreement;

[0290] A fourth number, the fourth number is determined according to the configuration information of the first indication field corresponding to each carrier in the carrier group or the first carrier set, and the first carrier set is the carrier set corresponding to the first DCI format.

[0291] In some embodiments, the fourth number is one of the fifth numbers corresponding to each carrier in the carrier group or the first carrier set, and the fifth number is determined according to configuration information of the corresponding carrier.

[0292] In some embodiments, the fourth number is a maximum value or a minimum value among the fifth numbers corresponding to the carriers in the carrier group or the first carrier set.

[0293] In some embodiments, the first bit width is determined according to the first parameter, and the first parameter is determined according to carriers that can be simultaneously scheduled by the first DCI.

[0294] In some embodiments, the first parameter is one of the sixth quantities corresponding to each carrier combination in the carrier group or the first carrier set, the sixth quantity is the sum of the fifth quantities corresponding to each carrier in the corresponding carrier combination, and the fifth quantity is determined according to the configuration information of the corresponding carrier.

[0295] In some embodiments, the first parameter is a maximum value or a minimum value of sixth quantities corresponding to the carrier group or each carrier combination in the first carrier set.

[0296] In some embodiments, the carrier group includes at least one of the following:

[0297] Primary cell group MCG, secondary cell group SCG or physical uplink control channel PUCCH group.

[0298] In some embodiments, in the first DCI, the number of valid bits included in the first indication field is the first bit width or the second bit width, the second bit width is the bit width corresponding to the second carrier combination scheduled by the first DCI, and the second carrier combination includes the at least two carriers.

[0299] In some embodiments, the second bit width is determined according to the fifth number of each carrier in the second carrier combination or the seventh number corresponding to the second carrier combination, the seventh number is the sum of the fifth numbers corresponding to each carrier in the second carrier combination, and the fifth number is determined according to the configuration information of the corresponding carrier.

[0300] In some embodiments, the number of valid bits is less than or equal to the first bit width.

[0301] In some embodiments, parsing of the valid information included in the first indication field starts from a high bit or a low bit of the first indication field.

[0302] In some embodiments, if the number of valid bits is less than the first bit width, the first bit is a preset value or is reserved, and the first bit is the bit in the first indication field other than the valid bits.

[0303] In some embodiments, the configuration information includes at least one of the following:

[0304] scheduling information of the carrier;

[0305] The number of bits corresponding to the carrier.

[0306] Those skilled in the art should understand that the relevant descriptions of the above-mentioned terminal devices and network devices in the embodiments of the present application can be understood by referring to the relevant descriptions of the wireless communication methods in the embodiments of the present application.

[0307] Figure 7 is a schematic diagram of a communication device 700 provided in an embodiment of the present application. The communication device can be a terminal device or a network device. The communication device 700 shown in Figure 7 includes a processor 710, which can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

[0308] Optionally, as shown in Figure 7, the communication device 700 may further include a memory 720. The processor 710 may call and execute a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0309] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0310] Optionally, as shown in FIG7 , the communication device 700 may further include a transceiver 730 , and the processor 710 may control the transceiver 730 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0311] The transceiver 730 may include a transmitter and a receiver. The transceiver 730 may further include an antenna, and the number of antennas may be one or more.

[0312] Optionally, the communication device 700 may specifically be a network device in an embodiment of the present application, and the communication device 700 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0313] Optionally, the communication device 700 may specifically be a mobile terminal / terminal device in an embodiment of the present application, and the communication device 700 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0314] Figure 8 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 800 shown in Figure 8 includes a processor 810, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0315] Optionally, as shown in FIG8 , the chip 800 may further include a memory 820 , wherein the processor 810 may call and execute a computer program from the memory 820 to implement the method in the embodiment of the present application.

[0316] The memory 820 may be a separate device independent of the processor 810 , or may be integrated into the processor 810 .

[0317] Optionally, the chip 800 may further include an input interface 830. The processor 810 may control the input interface 830 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0318] Optionally, the chip 800 may further include an output interface 840. The processor 810 may control the output interface 840 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0319] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0320] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0321] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0322] FIG9 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in FIG9 , the communication system 900 includes a terminal device 910 and a network device 920 .

[0323] Among them, the terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0324] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0325] It is understood that the memory in the embodiments of the present application 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 read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (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 RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0326] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0327] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0328] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0329] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0330] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0331] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0332] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0333] The embodiment of the present application also provides a computer program.

[0334] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0335] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0336] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0337] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0338] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as 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.

[0339] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0340] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0341] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0342] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, the method comprising: The network device sends first downlink control information DCI to the terminal device, where the first DCI is used to simultaneously schedule at least two carriers. The first DCI adopts a first DCI format, and the first DCI format includes a first indication field. The first indication field is used to indicate scheduling information of each of the at least two carriers. The bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that the first DCI can simultaneously schedule.

2. The method according to claim 1, wherein: The first bit width is determined according to the first parameter and the second parameter, and the first parameter is determined according to carriers that can be simultaneously scheduled by the first DCI.

3. The method according to claim 2, wherein: The first bit width is determined according to the product of the first parameter and the second parameter.

4. The method according to claim 2 or 3, wherein: The first parameter includes at least one of the following: A first number, where the first number is a maximum number of carriers that can be simultaneously scheduled by the first DCI; A second number, where the second number is the number of carriers included in a first carrier combination in at least one carrier combination corresponding to the first DCI, and the first carrier combination is a carrier combination including the most carriers in the at least one carrier combination.

5. The method according to any one of claims 2 to 4, wherein: The second parameter includes at least one of the following: The third quantity agreed upon in the agreement; A fourth number, the fourth number is determined according to the configuration information of the first indication field corresponding to each carrier in the carrier group or the first carrier set, and the first carrier set is the carrier set corresponding to the first DCI format.

6. The method according to claim 5, wherein: The fourth number is one of the fifth numbers corresponding to each carrier in the carrier group or the first carrier set, and the fifth number is determined according to configuration information of the corresponding carrier.

7. The method according to claim 6, wherein: The fourth number is a maximum value or a minimum value of the fifth numbers corresponding to the carriers in the carrier group or the first carrier set.

8. The method according to claim 1, wherein: The first bit width is determined according to the first parameter, and the first parameter is determined according to carriers that can be simultaneously scheduled by the first DCI.

9. The method according to claim 8, wherein: The first parameter is one of the sixth quantities corresponding to each carrier combination in the carrier group or the first carrier set, the sixth quantity is the sum of the fifth quantities corresponding to each carrier in the corresponding carrier combination, and the fifth quantity is determined according to the configuration information of the corresponding carrier.

10. The method according to claim 9, wherein: The first parameter is a maximum value or a minimum value of sixth quantities corresponding to each carrier combination in the carrier group or the first carrier set.

11. The method according to any one of claims 5 to 7, 9 and 10, wherein: The carrier group includes at least one of the following: Main cell group MCG, secondary cell group SCG or physical uplink control channel PUCCH group.

12. The method according to any one of claims 1 to 11, wherein: In the first DCI, the number of valid bits included in the first indication field is the first bit width or the second bit width, the second bit width is the bit width corresponding to the second carrier combination scheduled by the first DCI, and the second carrier combination includes the at least two carriers.

13. The method according to claim 12, wherein: The second bit width is determined according to the fifth number of each carrier in the second carrier combination or the seventh number corresponding to the second carrier combination, the seventh number is the sum of the fifth numbers corresponding to each carrier in the second carrier combination, and the fifth number is determined according to the configuration information of the corresponding carrier.

14. The method according to claim 12 or 13, wherein: The number of valid bits is less than or equal to the first bit width.

15. The method according to claim 14, wherein: Parsing of the valid information included in the first indication field starts from a high bit or a low bit of the first indication field.

16. The method according to claim 15, wherein: If the number of valid bits is less than the first bit width, the first bit is a preset value or is reserved, and the first bit is a bit in the first indication field except the first valid bit.

17. The method according to any one of claims 5, 6, 9 and 13, wherein: The configuration information includes at least one of the following: Scheduling information of the carrier; The number of bits corresponding to the carrier.

18. A wireless communication method, the method comprising: The terminal device receives the first downlink control information DCI sent by the network device, the first DCI is used to simultaneously schedule at least two carriers, the first DCI adopts a first DCI format, the first DCI format includes a first indication field, the first indication field is used to indicate the scheduling information of each carrier in the at least two carriers, the bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that the first DCI can schedule simultaneously.

19. The method according to claim 18, wherein: The first bit width is determined according to the first parameter and the second parameter, and the first parameter is determined according to carriers that can be simultaneously scheduled by the first DCI.

20. The method according to claim 19, wherein: The first bit width is determined according to the product of the first parameter and the second parameter.

21. The method according to claim 19 or 20, wherein: The first parameter includes at least one of the following: A first number, where the first number is a maximum number of carriers that can be simultaneously scheduled by the first DCI; A second number, where the second number is the number of carriers included in a first carrier combination in at least one carrier combination corresponding to the first DCI, and the first carrier combination is a carrier combination including the most carriers in the at least one carrier combination.

22. The method according to any one of claims 19 to 21, wherein: The second parameter includes at least one of the following: The third quantity agreed upon in the agreement; A fourth number, the fourth number is determined according to the configuration information of the first indication field corresponding to each carrier in the carrier group or the first carrier set, and the first carrier set is the carrier set corresponding to the first DCI format.

23. The method according to claim 22, wherein: The fourth number is one of the fifth numbers corresponding to each carrier in the carrier group or the first carrier set, and the fifth number is determined according to configuration information of the corresponding carrier.

24. The method according to claim 23, wherein: The fourth number is a maximum value or a minimum value of the fifth numbers corresponding to the carriers in the carrier group or the first carrier set.

25. The method of claim 18, wherein: The first bit width is determined according to the first parameter, and the first parameter is determined according to carriers that can be simultaneously scheduled by the first DCI.

26. The method according to claim 25, wherein: The first parameter is one of the sixth quantities corresponding to each carrier combination in the carrier group or the first carrier set, the sixth quantity is the sum of the fifth quantities corresponding to each carrier in the corresponding carrier combination, and the fifth quantity is determined according to the configuration information of the corresponding carrier.

27. The method according to claim 26, wherein: The first parameter is a maximum value or a minimum value of sixth quantities corresponding to each carrier combination in the carrier group or the first carrier set.

28. The method according to any one of claims 22 to 24, 26 and 27, wherein: The carrier group includes at least one of the following: Main cell group MCG, secondary cell group SCG or physical uplink control channel PUCCH group.

29. The method according to any one of claims 18 to 28, wherein: In the first DCI, the number of valid bits included in the first indication field is the first bit width or the second bit width, the second bit width is the bit width corresponding to the second carrier combination scheduled by the first DCI, and the second carrier combination includes the at least two carriers.

30. The method of claim 29, wherein: The second bit width is determined according to the fifth number of each carrier in the second carrier combination or the seventh number corresponding to the second carrier combination, the seventh number is the sum of the fifth numbers corresponding to each carrier in the second carrier combination, and the fifth number is determined according to the configuration information of the corresponding carrier.

31. The method according to claim 29 or 30, wherein: The number of valid bits is less than or equal to the first bit width.

32. The method according to claim 31, wherein: Parsing of the valid information included in the first indication field starts from a high bit or a low bit of the first indication field.

33. The method of claim 32, wherein: If the number of valid bits is less than the first bit width, the first bit is a preset value or is reserved, and the first bit is a bit in the first indication field except the valid bits.

34. The method according to any one of claims 22, 23, 26, and 30, wherein: The configuration information includes at least one of the following: Scheduling information of the carrier; The number of bits corresponding to the carrier.

35. A network device comprising: A first communication unit is configured to send first downlink control information DCI to a terminal device, where the first DCI is used to simultaneously schedule at least two carriers, the first DCI adopts a first DCI format, and the first DCI format includes a first indication field, where the first indication field is used to indicate scheduling information of each of the at least two carriers, and the bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that can be simultaneously scheduled by the first DCI.

36. A terminal device, comprising: The second communication unit is configured to receive first downlink control information DCI sent by a network device, where the first DCI is used to simultaneously schedule at least two carriers, the first DCI adopts a first DCI format, and the first DCI format includes a first indication field, where the first indication field is used to indicate scheduling information of each of the at least two carriers, and the bit width of the first indication field is a first bit width, and the first bit width is determined according to the carriers that can be simultaneously scheduled by the first DCI.

37. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 17.

38. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 18 to 34.

39. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 17, or executes a method as claimed in any one of claims 18 to 34.

40. A computer-readable storage medium for storing a computer program, wherein the execution of the computer program enables a computer to execute the method according to any one of claims 1 to 17, or the method according to any one of claims 18 to 34.

41. A computer program product, comprising computer program instructions, wherein the execution of the computer program instructions enables a computer to perform the method according to any one of claims 1 to 17, or the method according to any one of claims 18 to 34.

42. A computer program, wherein the execution of the computer program enables a computer to execute the method according to any one of claims 1 to 17, or the method according to any one of claims 18 to 34.

Images