CN113596998A

CN113596998A - Communication method and device

Info

Publication number: CN113596998A
Application number: CN202010366026.3A
Authority: CN
Inventors: 李锐杰; 官磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-11-02
Also published as: WO2021219059A1

Abstract

The embodiment of the application provides a communication method and a communication device, which are used for solving the problem of reducing DCI overhead. In the application, the terminal equipment determines third information according to the first TBS information, the first information and the second information; the first information, the second information and the third information are respectively any one of first MCS information, first time domain resource information and first frequency domain resource information, and the first information, the second information and the third information are different from each other. Compared with the scheme that the network equipment needs to indicate the terminal equipment through the DCI in the prior art, the third information is determined by the terminal equipment through a plurality of pieces of information, so that the cost of indicating by the DCI between the network equipment and the terminal equipment is reduced, and the performance of a communication system can be improved.

Description

Communication method and device

Technical Field

The present application relates to the field of communications, and in particular, to a communication method and apparatus.

Background

Currently, data transmission of a terminal device may be scheduled by a network device. The network device may schedule the terminal device to perform data transmission through indication information of Downlink Control Information (DCI) carried in a Physical Downlink Control Channel (PDCCH).

The overhead related to the DCI may include one or more of Modulation and Coding Scheme (MCS) information, time domain resource information, or frequency domain resource information. In many scenarios of ultra-reliable and low-latency communications (URLLC), data is mostly packet traffic, for example, 200 bits (bit), while DCI overhead needs 20 bits, and at this time, DCI overhead occupies 10% of the packet traffic, and may be up to 20% in severe cases, which limits performance of a communication system.

Therefore, how to effectively reduce DCI overhead is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which can effectively reduce DCI overhead, thereby improving the performance of a communication system.

In a first aspect, a communication method is provided, where an execution subject of the method may be a terminal device, and may also be a chip applied to the terminal device. The following description will be given taking as an example that the execution main body is a terminal device. The terminal equipment receives the first TBS information, the first information and the second information. And determining third information according to the first TBS information, the first information and the second information. The first information, the second information and the third information are respectively any one of first MCS information, first time domain resource information and first frequency domain resource information, and the first information, the second information and the third information are different from each other.

According to the scheme provided by the embodiment of the application, the terminal device can determine the third information according to the received first TBS information, the first information and the second information, and because the third information is determined by the terminal device through a plurality of information, the network device does not need to indicate the third information through DCI, the overhead of the network device adopting DCI to indicate the third information can be reduced, and the performance of the communication system can be improved.

In one possible design, the receiving the first TBS information includes: receiving a high-level signaling from a network device, wherein the high-level signaling comprises the first TBS information.

In the solution provided in the embodiment of the present application, because the first TBS information is generally fixed and unchangeable within a period of time, the network device may send the first TBS information to the terminal device through the semi-statically configured high layer signaling, and compared with the prior art in which the network device needs to frequently indicate MCS information, time domain resource information, and frequency domain resource information to the terminal device through DCI, the terminal device determines the scheme of the first TBS information according to the multiple pieces of information, thereby further reducing the overhead of the network device.

In another possible design, when the third information is first time domain resource information, the first time domain resource information and a first length satisfy a first association relationship, and the first length is determined by the first TBS information, the first MCS information, and the first frequency domain resource information.

According to the technical scheme provided by the embodiment of the application, because the first time domain resource information is determined by the terminal equipment through the first TBS information, the first MCS information and the first frequency domain resource information, compared with a scheme in the prior art that the network equipment needs to indicate the first time domain resource information to the terminal equipment through DCI, the overhead of the network equipment adopting the DCI to indicate the first time domain resource information can be further reduced, and the performance of a communication system is improved.

In another possible design, the first length represents a number of symbols included in the first time domain resource information.

In another possible design, when the third information is the first MCS information, a second association relationship is satisfied between a spectral efficiency in the first MCS information and a first spectral efficiency, where the first spectral efficiency is determined by the first time domain resource information, the first frequency domain resource information, and the first TBS information.

According to the technical scheme provided by the embodiment of the application, because the first MCS information is calculated by the terminal device through the first time domain resource information, the first frequency domain resource information and the first TBS information, compared with a scheme in the prior art that the network device needs to indicate the first MCS information to the terminal device through DCI, the overhead of the network device indicating the first MCS information through the DCI can be reduced, and therefore the performance of the communication system can be improved.

In another possible design, if the first information is the first frequency domain resource information, the receiving the first information includes: receiving first Downlink Control Information (DCI), wherein the first DCI indicates at least one target frequency domain resource set of at least two candidate frequency domain resource sets, and frequency domain resources corresponding to the first frequency domain resource information are partial frequency domain resources preset or preconfigured in the at least one target frequency domain resource set.

According to the scheme provided by the embodiment of the application, part of resources of the target resource set can be used for receiving or sending data by indicating the terminal equipment in a preset or configuration mode, so that the size of the target resource set can be flexibly set. For example, if there are 10 RBs, the 10 RBs may be divided into 5 groups in the prior art, and the network device needs to indicate the 10 RBs to the terminal device through DCI with 5-bit overhead; however, in the scheme of the present application, the 10 RBs may be divided into 2 groups, and the network device may preset or pre-configure the first 2 RBs of one of the groups to be used by the terminal device for transmitting data, so that the network device may indicate the terminal device through the first DCI with 2-bit overhead. In addition, the frequency domain resources in the target frequency domain resource set are preset or preconfigured by the network device, and multiple configuration modes can be provided in different time periods, so that the flexibility of using the frequency domain resources by the target terminal device can be improved.

In another possible design, when the at least one target frequency domain resource set is one target frequency domain resource set, and a preset or preconfigured frequency domain resource in the target frequency domain resource set includes multiple frequency domain resource configuration modes, the first DCI includes first indication information indicating a target configuration mode of a frequency domain resource of a target terminal device; or, when the at least one target frequency domain resource set is a plurality of target frequency domain resource sets, and a preset or preconfigured frequency domain resource in at least one target frequency domain resource set of the plurality of target frequency domain resource sets includes a plurality of frequency domain resource configuration modes, the first DCI includes second indication information, the second indication information indicates a target configuration mode of a frequency domain resource of the target terminal device, and the target configuration mode belongs to the plurality of frequency domain resource configuration modes.

In the solution provided by the embodiment of the present application, the preset or preconfigured frequency domain resources may include multiple frequency domain resource configuration modes, and the indication information in the first DCI may indicate one target configuration mode, which is the frequency domain resource of the target terminal device, from the multiple frequency domain resource configuration modes, so that the flexibility of using the frequency domain resource by the target terminal device may be improved.

In another possible design, when the third information is the first frequency domain resource information, a third correlation between the first frequency domain resource information and a second length is satisfied, where the second length is determined by the first TBS information, the first MCS information, and the first time domain resource information.

According to the technical scheme provided by the embodiment of the application, the number of frequency domain resources is calculated through the first time domain resource information, the first MCS information and the first TBS information, and the terminal equipment can determine the first frequency domain resource information by combining with the pre-configured frequency domain information set.

In another possible design, when the third information is the first frequency domain resource information, the determining the first frequency domain resource information according to the first TBS information, the first information, and the second information includes: determining a second length according to the first TBS information, the first MCS information and the first time domain resource information; determining the first frequency domain resource information according to the second length and the first starting position.

In the technical solution provided in the embodiment of the present application, since the second length of the first frequency domain resource information is determined by the terminal device itself through the first time domain resource information, the first MCS information, and the first TBS information, compared with a scheme in the prior art in which the network device needs to indicate the second length of the frequency domain resource information to the terminal device through DCI, the cost of the network device indicating the length of the frequency domain resource information using DCI can be reduced, so that the performance of the communication system can be improved.

In another possible design, the second length represents the number of resource blocks, RBs, or the number of resource block groups, RBGs, included in the first frequency domain resource information.

In another possible design, the receiving the first TBS information, the first information, and the second information includes: receiving second DCI, where the second DCI includes a plurality of information blocks, one of the information blocks corresponds to a target terminal device, the one information block includes third indication information, the third indication information indicates a first resource block of the target terminal device, and the first resource block includes at least one of the first TBS, the first MCS information, the first time domain resource information, or the first frequency domain resource information, or includes partial information of the at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information; and receiving second configuration information, wherein the second configuration information comprises the index of the information block corresponding to the target terminal equipment.

In the communication method provided by the embodiment of the present application, the second DCI sent by the network device to the target terminal device may include multiple target information blocks, and one information block in the multiple target information blocks may correspond to the target terminal device.

In a second aspect, a communication method is provided, and an execution subject of the method may be a terminal device or a chip applied to the terminal device. The following description will be given taking as an example that the execution main body is a terminal device. The terminal equipment receives first configuration information, wherein the first configuration information comprises a first information group set of target terminal equipment. The terminal device receives first Downlink Control Information (DCI), where the DCI includes a plurality of target information blocks, one information block of the target information blocks corresponds to the target terminal device, and the one information block includes first indication information, where the first indication information is used to activate a first target information group of the target terminal device, and the first target information group belongs to the first information group set.

In the communication method provided by the embodiment of the present application, the first DCI sent by the network device to the target terminal device may include multiple target information blocks, and one information block of the multiple target information blocks may correspond to the target terminal device, that is, DCI of multiple terminal devices is jointly encoded.

In one possible design, the method further includes: and receiving second configuration information, wherein the second configuration information comprises the index of the information block corresponding to the target terminal equipment.

In another possible design, the first set of information groups includes at least one candidate target information group including at least one of first transport block size, TBS, information, a first modulation and coding, MCS, information, a first time domain resource, or first frequency domain resource, or a portion of the information in at least one of the first TBS information, the first MCS, the first time domain resource, or the first frequency domain resource.

In another possible design, the first set of information groups includes at least two of the candidate target information groups, and the first indication information is used to activate the first target information group from the at least two candidate target information groups.

According to the scheme provided by the application, because the information in the candidate target information group is configured through the first configuration information, the first indication information can select one information group from the configured information to activate, and the information group comprises the information of a plurality of terminal devices, compared with a scheme in the prior art that the network device needs to frequently indicate an information block to each terminal device through a plurality of DCIs, the overhead of the DCI can be further saved.

In another possible design, the set of candidate target information includes the first TBS information, the first MCS information, and the first time domain resource information, and the method further includes: receiving a second DCI, where the second DCI indicates at least one target frequency domain resource set of at least two candidate frequency domain resource sets, and the frequency domain resources corresponding to the first frequency domain resource information are a preset or preconfigured part of the frequency domain resources in the at least one target frequency domain resource set.

According to the scheme, part of resources of the target resource set can be used for receiving or sending data by indicating the terminal equipment in a preset or configuration mode, so that the size of the target resource set can be flexibly set. For example, if there are 10 RBs, the 10 RBs may be divided into 5 groups in the prior art, and the network device needs to indicate the 10 RBs to the terminal device through DCI with 5-bit overhead; however, in the scheme of the present application, the 10 RBs may be divided into 2 groups, and the network device may preset or pre-configure the first 2 RBs of one of the groups to be used by the terminal device for transmitting data, so that the network device may indicate the terminal device through the first DCI with 2-bit overhead. In addition, the frequency domain resources in the target frequency domain resource set are preset or preconfigured by the network device, and multiple configuration modes can be provided in different time periods, so that the flexibility of using the frequency domain resources by the target terminal device can be improved.

In another possible design, when the at least one target frequency domain resource set is one target frequency domain resource set, and a preset or preconfigured frequency domain resource in the target frequency domain resource set includes multiple frequency domain resource configuration manners, the first DCI includes second indication information indicating a target configuration manner of a frequency domain resource of the target terminal device; and/or when the at least one target frequency domain resource information set is a plurality of target frequency domain resource sets, and a preset or preconfigured frequency domain resource in at least one target frequency domain resource set of the plurality of target frequency domain resource sets includes a plurality of frequency domain resource configuration modes, the first DCI includes third indication information, the third indication information indicates a target configuration mode of a frequency domain resource of the target terminal device, and the target configuration mode belongs to the plurality of frequency domain resource configuration modes.

In another possible design, the method further includes: and receiving fourth indication information, wherein the fourth indication information is used for indicating the target terminal equipment to terminate the use of the target resource corresponding to the first target information group.

According to the scheme provided by the embodiment of the application, before the target terminal device receives the fourth indication information, the target terminal device can use the target resource corresponding to the first target information group, and the network device is not required to continuously send the information block to the target terminal device through the DCI, so that the DCI overhead can be further saved, and the performance of the communication system can be improved.

In a third aspect, a communication method is provided, where an execution subject of the method may be a network device or a chip applied to the network device. The following description will be given taking as an example that the execution subject is a network device. The network equipment determines third information and sends first Transport Block Size (TBS) information, first information and second information, wherein the first TBS information, the first information and the second information are used for indicating the third information. Wherein the first information, the second information, and the third information are any one of first modulation and coding MCS information, first time domain resource information, and first frequency domain resource information, respectively, and the first information, the second information, and the third information are different from each other.

In another possible design, the sending the first TBS information includes: and sending a high-level signaling to the target terminal equipment, wherein the high-level signaling comprises the first TBS information.

In another possible design, when the third information is first time domain resource information, the first time domain resource information and a first length satisfy a first association relationship, and the first length is related to the first TBS information, the first MCS information, and the first frequency domain resource information.

In another possible design, when the third information is the first MCS information, the spectral efficiency in the first MCS information and a first spectral efficiency satisfy a second association relationship, and the first spectral efficiency is related to the first time domain resource information, the first frequency domain resource information, and the first TBS information.

In another possible design, the sending the first information is the first frequency domain resource information, and the sending the first information includes: sending first Downlink Control Information (DCI), wherein the first DCI indicates at least one target frequency domain resource set of at least two candidate frequency domain resource sets, and frequency domain resources corresponding to the first frequency domain resource information are partial frequency domain resources preset or preconfigured in the at least one target frequency domain resource set.

In another possible design, when the at least one target frequency domain resource set is one target frequency domain resource set, and a preset or preconfigured frequency domain resource in the target frequency domain resource set includes multiple frequency domain resource configuration modes, the first DCI includes first indication information indicating a target configuration mode of a frequency domain resource of a target terminal device; and/or when the at least one target frequency domain resource information set is a plurality of target frequency domain resource sets, and a preset or preconfigured frequency domain resource in at least one target frequency domain resource set of the plurality of target frequency domain resource sets includes a plurality of frequency domain resource configuration modes, the first DCI includes second indication information, the second indication information indicates a target configuration mode of a frequency domain resource of the target terminal device, and the target configuration mode belongs to the plurality of frequency domain resource configuration modes.

In another possible design, when the third information is the first frequency domain resource information, a third correlation relationship is satisfied between the first frequency domain resource information and a second length, and the second length is related to the first TBS information, the first MCS information, and the first time domain resource information.

In another possible design, the second length represents a number of resource blocks, RBs, or a number of resource blocks, RBGs, included in the first frequency-domain resource information.

In another possible design, the sending the first TBS information, the first information, and the second information includes: sending a second DCI, where the second DCI includes a plurality of information blocks, one of the information blocks corresponds to a target terminal device, and the one information block includes third indication information, where the third indication information indicates a first resource block of the target terminal device, and the first resource block includes at least one of the first TBS, the first MCS information, the first time domain resource information, or the first frequency domain resource information, or includes partial information of the at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information; and sending second configuration information, wherein the second configuration information comprises the index of the information block corresponding to the target terminal equipment.

The beneficial effects of the third aspect can refer to the beneficial effects of the first aspect, and are not described herein again.

In a fourth aspect, a communication method is provided, where an execution subject of the method may be a network device or a chip applied to the network device. The following description will be given taking as an example that the execution subject is a network device. The network equipment sends first configuration information, wherein the first configuration information comprises a first information group set of target terminal equipment, and sends first Downlink Control Information (DCI). The first DCI includes a plurality of target information blocks of a plurality of terminal devices, where one information block of the plurality of target information blocks corresponds to the target terminal device, and the one information block includes first indication information, where the first indication information is used to activate a first target information group of the target terminal device, and the first target information group belongs to the first information group set.

In one possible design, the method further includes: and sending second configuration information, wherein the second configuration information comprises the index of the information block corresponding to the target terminal equipment.

In another possible design, the set of candidate target information includes the first TBS information, the first MCS information, and the first time domain resource information, and the method further includes: and sending a second DCI, wherein the second DCI indicates at least one target frequency domain resource set of at least two candidate frequency domain resource sets, and the frequency domain resources corresponding to the first frequency domain resource information are part of preset or preconfigured frequency domain resources in the at least one target frequency domain resource set.

In another possible design, the method further includes: and sending fourth indication information, wherein the fourth indication information indicates the target terminal equipment to terminate the use of the target resource corresponding to the first target information group.

The beneficial effects of the fourth aspect can refer to the beneficial effects of the second aspect, and are not described herein again.

In a fifth aspect, a communication apparatus is provided, and beneficial effects may be found in the description of the first aspect, which is not described herein again. The communication device has the functionality to implement the actions in the method embodiment of the first aspect described above. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware includes one or more modules corresponding to the above-described functions. In one possible design, the communication device includes: a receiving and sending module, configured to receive first transport block size TBS information, first information, and second information; a processing module, configured to determine third information according to the first TBS information, the first information, and the second information; wherein the first information, the second information and the third information are any one of first modulation and coding MCS information, first time domain resource information and first frequency domain resource information, respectively, and the first information, the second information and the third information are different from each other. The modules may perform corresponding functions in the method example of the first aspect, for specific reference, detailed description of the method example is given, and details are not repeated here.

In a sixth aspect, a communication apparatus is provided, and the beneficial effects may be found in the description of the second aspect and will not be described herein again. The communication device has the functionality to implement the actions in the method example of the second aspect described above. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. In one possible design, the communication device includes: a processing module, configured to store an instruction for instructing the transceiver module to receive first configuration information, where the first configuration information includes a first information group set of a target terminal device; and receiving first Downlink Control Information (DCI), wherein the first DCI comprises a plurality of target information blocks, one information block in the plurality of target information blocks corresponds to the target terminal device, the one information block comprises first indication information, the first indication information is used for activating a first target information group of the target terminal device, and the first target information group belongs to the first information group set. The modules may perform corresponding functions in the method example of the second aspect, for specific reference, detailed description of the method example is given, and details are not repeated here.

In a seventh aspect, a communication apparatus is provided, and beneficial effects may be found in the description of the third aspect and will not be described herein again. The communication device has the functionality to implement the actions in the method instance of the third aspect described above. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. In one possible design, the communication device includes: the processing module is used for determining third information; a transceiver module, configured to send first transport block size, TBS, information, and second information, where the first TBS information, the first information, and the second information are used to indicate the third information; wherein the first information, the second information and the third information are any one of first modulation and coding MCS information, first time domain resource information and first frequency domain resource information, respectively, and the first information, the second information and the third information are different from each other. The modules may perform corresponding functions in the method example of the third aspect, for specific reference, detailed description of the method example is given, and details are not repeated here.

In an eighth aspect, a communication apparatus is provided, and beneficial effects may be found in the description of the fourth aspect and will not be described herein again. The communication device has the functionality to implement the actions in the method instance of the fourth aspect described above. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. In one possible design, the communication device includes: a processing module, configured to store an instruction, configured to instruct a transceiver module to send first configuration information, where the first configuration information includes a first information group set of a target terminal device; and sending first DCI downlink control information, where the first DCI includes a plurality of target information blocks of a plurality of terminal devices, where one information block of the plurality of target information blocks corresponds to the target terminal device, where the one information block includes first indication information, where the first indication information is used to activate a first target information group of the target terminal device, and the first target information group belongs to the first information group set. These modules may perform corresponding functions in the method example of the fourth aspect, for specific reference, detailed description of the method example is given, and details are not repeated here.

In a ninth aspect, a communication apparatus is provided, and the communication apparatus may be the terminal device in the above method embodiment, or a chip provided in the terminal device. The communication device comprises a communication interface, a processor and optionally a memory. Wherein the memory is adapted to store a computer program or instructions, and the processor is coupled to the memory and the communication interface, and when the processor executes the computer program or instructions, the communication apparatus is adapted to perform the method performed by the terminal device in the above-mentioned method embodiments.

In a tenth aspect, a communication apparatus is provided, where the communication apparatus may be the network device in the above method embodiment, or a chip provided in the network device. The communication device comprises a communication interface, a processor and optionally a memory. Wherein the memory is used for storing a computer program or instructions, and the processor is coupled with the memory and the communication interface, and when the processor executes the computer program or instructions, the communication device is caused to execute the method executed by the network device in the above method embodiment.

In an eleventh aspect, there is provided a computer program product comprising: computer program code which, when run, causes the method performed by the terminal device in the above aspects to be performed.

In a twelfth aspect, there is provided a computer program product comprising: computer program code which, when executed, causes the method performed by the network device in the above aspects to be performed.

In a thirteenth aspect, the present application provides a chip system, which includes a processor, and is configured to implement the functions of the terminal device in the method of the foregoing aspects. In one possible design, the system-on-chip further includes a memory for storing program instructions and/or data. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In a fourteenth aspect, the present application provides a chip system, which includes a processor for implementing the functions of the network device in the method of the above aspects. In one possible design, the system-on-chip further includes a memory for storing program instructions and/or data. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In a fifteenth aspect, the present application provides a computer-readable storage medium storing a computer program that, when executed, implements the method performed by a terminal device in the above aspects.

In a sixteenth aspect, the present application provides a computer-readable storage medium storing a computer program that, when executed, implements the method performed by the network device in the above-described aspects.

Drawings

Fig. 1 is a schematic diagram of a communication-based system according to an embodiment of the present application.

Fig. 2 is a schematic diagram of an indication of time domain resources provided in an embodiment of the present application.

Fig. 3 is a schematic diagram of an indication of frequency domain resources according to an embodiment of the present application.

Fig. 4 is a flowchart illustrating a communication method provided in an embodiment of the present application.

Fig. 5 is a schematic diagram of resources configured on a subband by different terminal devices according to an embodiment of the present application.

Fig. 6 is a schematic diagram of resources configured on a subband by different terminal devices according to an embodiment of the present application.

Fig. 7 is a schematic diagram of different permutation and combination of multiple RBs required by a terminal device according to an embodiment of the present application.

Fig. 8 is a schematic diagram of different terminal devices corresponding to different information blocks according to an embodiment of the present application.

Fig. 9 is a flowchart illustrating another communication method according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of another communication apparatus provided in an embodiment of the present application.

Detailed Description

The terms "first," "second," and "third," etc. in the description and claims of this application and the above-described drawings are used for distinguishing between different objects and not for limiting a particular order.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

Fig. 1 is an architecture diagram of a mobile communication system to which an embodiment of the present application is applied. As shown in fig. 1, the mobile communication system includes a core network device 110, a radio access network device 120, and at least one terminal device (such as a terminal device 130 and a terminal device 140 shown in fig. 1). The terminal equipment is connected with the wireless access network equipment in a wireless mode, and the wireless access network equipment is connected with the core network equipment in a wireless or wired mode. The core network device and the radio access network device may be separate physical devices, or the function of the core network device and the logical function of the radio access network device may be integrated on the same physical device, or a physical device may be integrated with a part of the function of the core network device and a part of the function of the radio access network device. The terminal equipment may be fixed or mobile. Fig. 1 is a schematic diagram, and other network devices, such as a wireless relay device and a wireless backhaul device, may also be included in the communication system, which are not shown in fig. 1. The embodiments of the present application do not limit the number of core network devices, radio access network devices, and terminal devices included in the mobile communication system.

The radio access network device is an access device that the terminal device accesses to the mobile communication system in a wireless manner, and may be a base station (base station), an evolved NodeB (eNodeB), a Transmission Reception Point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, and the like; or may be a module or a unit that performs part of the functions of the base station, for example, a Centralized Unit (CU) or a Distributed Unit (DU). The embodiments of the present application do not limit the specific technologies and the specific device forms adopted by the radio access network device. In this application, a radio access network device is referred to as a network device for short, and if no special description is provided, the network device refers to a radio access network device. Such as radio access network device 120 may be referred to as network device 120. The radio access network device 130 may be referred to as a network device 130.

A terminal device may also be referred to as a terminal, User Equipment (UE), a mobile station, a mobile terminal, etc. The terminal device can be a mobile phone, a tablet computer (Pad), a computer with a wireless transceiving function, a virtual reality terminal device, an augmented reality terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote operation, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home and the like. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.

The present application may be applied to a 5G New Radio (NR) system, and may also be applied to other communication systems, as long as an entity in the communication system needs to send transmission direction indication information, and another entity needs to receive the indication information, and determine a transmission direction within a certain time according to the indication information.

The network equipment and the terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; can also be deployed on the water surface; it may also be deployed on airborne airplanes, balloons and satellite vehicles. The embodiment of the application does not limit the application scenarios of the network device and the terminal device.

The network device and the terminal device may communicate with each other through a licensed spectrum (licensed spectrum), may communicate with each other through an unlicensed spectrum (unlicensed spectrum), or may communicate with each other through both the licensed spectrum and the unlicensed spectrum. The network device and the terminal device may communicate with each other through a frequency spectrum of 6 gigahertz (GHz) or less, through a frequency spectrum of 6GHz or more, or through both a frequency spectrum of 6GHz or less and a frequency spectrum of 6GHz or more. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.

In various embodiments of the present application, the time domain symbol may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a single carrier-frequency division multiplexing (SC-FDM) symbol. The symbols in the embodiments of the present application all refer to time domain symbols, if not otherwise specified.

It can be understood that, in the embodiment of the present application, the PUSCH is only used as an example of an uplink data channel, and in different systems and different scenarios, the data channel may have different names, which is not limited in the embodiment of the present application.

Compared with the previous generations of mobile communication systems, the 5G system has higher requirements on the aspects of transmission rate, time delay, power consumption and the like, and can be applied to wider application scenes including but not limited to automatic driving, AR/VR, factory services, smart grids, Internet of things and the like. Among them, URLLC, as one of three typical services in a 5G communication system, puts more strict requirements on reliability and time delay.

Currently, the base station may schedule the terminal device to receive or transmit data through the indication information of the DCI carried in the PDCCH. The DCI related to the data channel may include formats 0 to 0(Format 0 to 0), Format 0 to 1, Format 1 to 0, and Format 1 to 1. Specifically, Format 0-0 and Format 0-1 may be used for scheduling of an uplink data channel, and Format 1-0 and Format 1-1 may be used for indicating a downlink data channel.

The overhead related to the DCI may include one or more of MCS information, time domain resource information, and frequency domain resource information, which will be separately described below.

1. Transport Block Size (TBS) information and MCS information

The network device may send the MCS information to the target terminal device through the DCI, and may obtain the TBS information through calculation, where the TBS in this embodiment may be a size of data included in a Transport Block (TB), that is, a data amount or a bit number carried on a certain resource.

In order to facilitate understanding of the scheme of the present application, the TBS calculation method will be described in detail below.

First, the number of Resource Elements (REs) in one slot may be determined, and the number of usable REs of each Physical Resource Block (PRB) may be calculated by using formula (1).

Wherein, N'_REMay represent the number of REs available on one PRB;

the number of carriers in the frequency domain in one PRB can be represented;

the number of symbols scheduled by a Physical Uplink Shared Channel (PUSCH) or a Physical Downlink Shared Channel (PDSCH) in a time slot may be represented;

the number of REs occupied by a demodulation reference signal (DMRS) in one PRB may be represented, including DMRS overhead;

may represent overhead for parameter (xhead) configuration in a higher layer parameter physical uplink shared channel-serving cell configuration (PUSCH-ServingCellConfig).

The number of REs used to calculate TBS is obtained by formula (2).

N_RE＝min(156,N'_RE)·n_PRB (2)

Wherein N is_REMay represent the number of REs, n, used to calculate TBS_PRBMay represent the number of PRBs allocated.

The information bit number is obtained by formula (3).

N_info＝N_RE·R·Q_m·υ (3)

Wherein N is_infoCan be the number of information bits, R is the codeRate, Q_mAnd the modulation order upsilon is the number of transmitted layers. And R and Q_mThese two parameters are found in the protocol table by the value indicated by the MCS field in the DCI.

If N is present_info3824, the quantized median value of the information bit is calculated by equation (4).

Wherein N is_i'_nfoThe quantized median value of the information bit can be represented, n ═ max (3, [ log [ ])₂(N_info)]-6) looking up in the protocol table not less than N_i'_nfoThe most recent value is used as TBS.

If, N_info>3824, a quantized intermediate value of the information bit is calculated by equation (5).

Wherein the content of the first and second substances,

if the code rate R is ≦ 1/4, the TBS may be calculated based on equation (6).

Wherein the content of the first and second substances,

otherwise, the TBS may be calculated based on equation (7).

Wherein the content of the first and second substances,

2. time domain resource information and frequency domain resource information

(1) Time domain resource information

The PDSCH time domain resource information may be indicated by DCI. The time domain resource information may include a mapping manner, K₀S, L. The mapping mode may include type a and type B, K₀May indicate a time slot interval of the PDSCH with respect to the PDCCH corresponding thereto, and S and L respectively indicate a time slot interval at K₀The start position and length in the indicated slot. Specifically, as shown in fig. 2 (a).

To facilitate understanding of the scheme of the present application, the following is a brief description of the types of mapping schemes involved.

Type a indicates that the symbols occupied by PDSCH may start from {0,1, 2, 3} symbol positions within a slot, with a symbol length of 3-14 symbols (the slot boundary cannot be exceeded). For the allocation mode, the number of allocated time domain symbols is large, and the method is suitable for large-bandwidth scenes. A typical application scenario may be: the symbols 0-2 PDCCH and 3-13 PDSCH in a slot occupy the entire slot, and type a may also be referred to as slot-based scheduling.

Type B indicates that the PDSCH occupies symbols starting from {0,1, …,12} symbol positions within a slot, but the symbol length is limited to {2,4,7} symbols (the slot boundary cannot be exceeded). For the allocation mode, the PDSCH initial symbol position can be flexibly configured, the number of allocated symbols is small, the time delay is short, and the method is suitable for Low Latency (LL) and high reliability (UR) scenes and realizes URLLC application. Type B may therefore also be generally referred to as a type of non slot based scheduling.

And if the DCI carried in the PDCCH selects a certain row in a table pre-configured by a high layer, the selected row is used as the time domain resource of the PDSCH. The following table is an example. For example, when the DCI carried in the PDCCH indicates a row index (index) of 1 and a demodulation reference signal (DMRS) Position (which may also be referred to as DMRS-type a-Position) of 2, it can be seen from table 1，K₀＝0，S＝2，L＝12。

TABLE 1

It should be understood that table 1 is exemplary only and should not impose any limitations on the time domain resource table.

(2) Frequency domain resource information

The PDSCH frequency domain resource information may also be indicated by DCI carried in the PDCCH. There are two indication modes for the indication of the frequency domain resources.

The first way is type 0, and the frequency domain granularity of this indication is Resource Block Groups (RBGs). The following description will be given taking as an example a bandwidth of 10 Resource Blocks (RBs) and an RBG size of 2, as shown in fig. 3 (a). Each resource block group has a size of 2 RBs, and thus, 10 RBs can be divided into 5 groups. The frequency domain resources occupied by the PDSCH may be indicated in the form of bits. Taking the PDCCH indicating information as 10001, the PDSCH occupies RBG0 and RBG 4.

The second way is type 1, the indication way is continuously allocated. RB in PDCCH which can indicate frequency domain_startAnd L_RB，RB_startCan indicate the starting position of occupying RB, L_RBMay indicate the length of the occupied RB. Taking the bandwidth as 10RB as an example, as shown in (b) of FIG. 3, if RB_start＝2，L_RBThe frequency domain resources occupied by PDSCH may include RB2, RB3, and RB4 ═ 3.

The indication of the time domain and frequency domain resource information of the downlink data channel is briefly described above, the indication of the time domain and frequency domain resource information of the uplink data channel is described below, and there is a difference that the indication of the time domain and frequency domain resource information of the uplink data channel is similar to the indication of the time domain and frequency domain resource information of the downlink data channel, which will be described in detail below.

The indication of time domain resource information for PUSCH is similar to the indication of PDSCH time domain resource information, except for the slot offset relative to the corresponding PDCCH of the data channel. For the downlink data channel, the slot offset may be K₀Indicating that for the uplink data channel, the slot offset can be K₂The details are shown below.

The PUSCH may be scheduled through the PDCCH. Among them, DCI format 0-0 and format 0-1 may be used to schedule PUSCH. The time domain resource allocation (time domain resource allocation) in the DCI may correspond to a row in the resource allocation table. Each row in the resource allocation table may include three pieces of information, respectively K₂Start symbol S and length L, and the mapping type.

The mapping types may include type a and type B, similar to the types indicated above, and are not described here for brevity.

Similarly, the time domain resource information of the PUSCH may also include a mapping mode, K₂S, L. Wherein, K₂The slot interval of the PUSCH relative to the PDCCH corresponding thereto can be represented, and S and L can be respectively represented at K₂The start position and length in the indicated slot refer to (b) in fig. 2.

And if the DCI carried in the PDCCH selects a certain row in a table pre-configured by a high layer, the selected row is used as the time domain resource of the PUSCH. Taking table 2 as an example, for example, when a DCI carried in a PDCCH indicates a row index (index) is 1, it can be seen from table 2 that K in the time domain resource information₂J, S-0, and L-14, where j may be determined by subcarrier spacing, as described in table 3.

TABLE 2

Line index	PUSCH mapping type	K₂	S	L
					1	Type A	j		0	14
2	Type A	j		0							12
					3	Type A	j		0	10
4	Type B	j		2							10
					5	Type B	j		4	10
6	Type B	j		4							8
					7	Type B	j		4	6
8	Type A	j+1	0	14
					9	Type A	j+1	0	12
10	Type A	j+1	0	10
					11	Type A	j+2	0	14
12	Type A	j+2	0	12
					13	Type A	j+2	0	10
14	Type B	j		8						6
					15	Type A	j+3	0	14
16	Type A	j+3	0	10

TABLE 3

μPUSCH	j
			0	1
1	1
		2	2
3	3

Similarly, tables 2 and 3 are also exemplary only and should not impose any limitations on the time domain resource table.

The indication of the PUSCH frequency domain resource information is similar to the indication of the PDSCH resource information, and is not repeated here for brevity.

In many service scenarios of URLLC, data is mostly packet service, for example, 200 bits (bit), and DCI overhead needs 20 bits, at this time, DCI overhead occupies 10% of packet service, and may reach 20% in severe cases, which limits performance of communication system. Therefore, how to effectively reduce DCI overhead is a problem to be solved.

As shown in fig. 4, an embodiment of the present application provides a flowchart of a communication method, which may be executed by a terminal device and a network device, or may also be executed by a chip in the terminal device and a chip in the network device. The communication method 400 may include:

s410, the network device determines the third information.

S420, the network device sends first TBS information, first information, and second information, where the first TBS information, the first information, and the second information are used to indicate the third information.

Wherein the steps S410-S420 may be performed by core network device 110 and/or radio access network device 120 in fig. 1.

S430, the terminal device receives the first TBS information, the first information and the second information.

S440, the terminal device determines third information according to the first TBS information, the first information, and the second information.

Wherein the steps S430-S440 may be performed by the terminal device 130 and/or the terminal device 140 in fig. 1.

The first information, the second information and the third information are respectively any one of first MCS information, first time domain resource information and first frequency domain resource information, and the first information, the second information and the third information are different from each other.

For example, the first information and the second information may be first MCS information and first time domain resource information, and the third information may be first frequency domain resource information, wherein the first information may be the first MCS information and the second information may be the first time domain resource information, or the first information may be the first time domain resource information and the second information may be the first MCS information; or, the first information and the second information may be first MCS information and first frequency domain resource information, and the third information may be first time domain resource information, where the first information may be the first MCS information and the second information may be the first frequency domain resource information, or the first information may be the first frequency domain resource information and the second information may be the first MCS information; alternatively, the first information and the second information may be first time domain resource information and first frequency domain resource information, and the third information may be first MCS information, where the first information may be the first time domain resource information, and the second information may be the first frequency domain resource information, or the first information may be the first frequency domain resource information, and the second information may be the first time domain resource information, and this is not limited in this application.

According to the scheme provided by the embodiment of the application, the target terminal device can determine the third information according to the received first TBS information, the first information and the second information, and because the third information is determined by the target terminal device through a plurality of information, the network device does not need to indicate the third information through DCI, the overhead of the network device adopting DCI to indicate the third information can be reduced, and thus the performance of the communication system can be improved.

For example, the network device may send first TBS information to the target terminal device, where the first TBS information may be sent through higher layer signaling. Correspondingly, the target terminal equipment receives the high-level signaling.

The higher layer signaling may be signaling of a Medium Access Control (MAC) layer or signaling of a Radio Resource Control (RRC) layer, and the like, and this is not limited in this application.

For example, when the third information is first time domain resource information, the first time domain resource information and a first length satisfy a first association relationship, and the first length is determined by the first TBS information, the first MCS information, and the first frequency domain resource information. For example, the first length may be expressed as a number of symbols included in the first time domain resource information. Alternatively, the first length may also be the length L of the time domain resource information mentioned above.

The first association relationship may mean that the first length is the same as the length in the first time domain information; or may be that the difference between the first length and the length in the first time domain information is minimal.

The first association relationship may be a default, or may be selected from a plurality of time domain resource information based on a priority principle, or may be selected from a plurality of time domain resource information corresponding to n symbols, where the value of n may be preset.

Accordingly, the target terminal device may determine the first length based on the received first frequency domain resource information, the first MCS information, and the first TBS information, and determine the first time domain resource information from the pre-configured time domain resource information set according to the first length. The network device may send the pre-configured set of time domain resource information to the target terminal device. Each time domain resource information in the time domain resource information set may include one or more of a resource indication type, a frequency domain resource mapping manner, a resource indication value of a time domain resource, a time domain resource start position, or an occupied length.

The target terminal device may calculate the required RE through the first MCS information and the first TBS information, obtain the required first length L by combining the first frequency domain resource information, and select one time domain resource information having the same length as the first length L or the smallest length difference from the pre-configured time domain resource information set as the first time domain resource information of the target terminal device. For example, it is assumed that the preconfigured time domain resource information set includes 3 types of time domain resource information, which are resource information a, resource information B, and resource information C, and the number of lengths L corresponding to the 3 types of resource information is 1, 6, and 8, respectively. If the first length determined by the above calculation is 6, since the first length is the same as the length in the resource information B in the case where the first length is guaranteed to be the same as the length in the first time domain information in the 3 kinds of resource information, the target terminal device may select the resource information B as the first time domain resource information. If the first length determined by the above calculation is 2, the target terminal device may select the resource information a as the first time domain resource information, because in the 3 kinds of resource information, the difference between the first length and the length corresponding to the resource information a is the smallest under the condition that the difference is guaranteed to be the smallest.

In some embodiments, if a plurality of resource information in the preconfigured time domain resource information set all satisfy the above condition, the selection may be performed based on a preset criterion. For example, the target terminal device or the network device may default a certain resource information as the first time domain resource information, the target terminal device may also select a certain resource information as the first time domain resource information based on a priority principle, and the target terminal device may also select, from the multiple time domain resource information, the corresponding time domain resource information after the n symbols as the first time domain resource information of the target terminal device.

For example, it is assumed that the preconfigured time domain resource information set includes 5 time domain resource information, which are time domain resource information A, B, C, D and E, respectively, and the lengths L included in the 5 time domain resource information are 1, 6, 8, and 12, respectively. If the first length L determined in the above step is 6, it is determined that the selection range of the first time domain resource information is B and C, in this case, one way is that the terminal device may select the time domain resource information B as the first time domain resource information of the target terminal device by default or select the time domain resource information C as the first time domain resource information of the target terminal device by default. In another way, the terminal device may select based on a priority principle, for example, the time domain resource information B may be configured in advance to be better than the time domain resource information C, and then the time domain resource information B may be selected as the first time domain resource information of the target terminal device. For example, the time domain resource information B and C respectively correspond to one K0, in this scenario, the time domain resource information with the smallest K0 value corresponding to the time domain resource information B or C after n symbols may be selected as the first time domain resource information; or the time domain resource information B and C respectively correspond to the same K0, the time domain resource information with the minimum S value corresponding to the time domain resource information B or C is further selected as the first time domain resource information.

According to the technical scheme provided by the embodiment of the application, because the first time domain resource information is determined by the target terminal equipment through the first TBS information, the first MCS information and the first frequency domain resource information, compared with a scheme in the prior art that the network equipment needs to indicate the first time domain resource information to the target terminal equipment through DCI, the overhead of the network equipment adopting DCI to indicate the first time domain resource information can be further reduced, and the performance of a communication system can be further improved.

It should be noted that, in the embodiment of the present application, time domain resource information of a downlink data channel is used for description, and time domain resource information of an uplink data channel is similar to the time domain resource information of the downlink data channel, but the difference is that K is used for time slot offset in the time domain resource information of the downlink data channel₂Indicating that K is used for time slot offset in time domain resource information of uplink data channel₀For brevity, the description is omitted here.

Illustratively, when the third information is the first MCS information, the spectral efficiency in the first MCS information and a first spectral efficiency satisfy a second association relationship, and the first spectral efficiency is determined by the first time domain resource information, the first frequency domain resource information, and the first TBS information.

In this embodiment of the application, the first time domain resource information may include one or more of a starting symbol S and a length L of the time domain resource, a Starting and Length Indicator Value (SLIV) of the time domain resource, or a mapping manner of the time domain resource; the first frequency domain resource information in this embodiment may include a frequency domain resource indication type, a mapping manner of the frequency domain resource, a Resource Indication Value (RIV) of the frequency domain resource, a frequency domain resource starting RB or an occupied RB length L_RBAnd a bitmap of frequency domain resources.

The second association relationship may mean that the first spectrum efficiency is the same as the spectrum efficiency in the first MCS information; or may be that the first spectral efficiency is the smallest difference from the spectral efficiency in the first MCS information.

Correspondingly, the target terminal device determines a first spectrum efficiency based on the received first time domain resource information, the received first frequency domain resource information and the received first TBS information, and determines first MCS information from a preset table according to the first spectrum efficiency.

First, the target terminal device may calculate the number of REs carrying data according to the first time domain resource information and the first frequency domain resource information. For example, the target terminal device may obtain N according to the above formula (2)_REAnd then obtaining the first spectrum efficiency mu according to the formula (8).

μ＝N_TB/N_RE (8)

Wherein N is_TBTBS may be expressed in units of bits.

After the target terminal device obtains the first spectral efficiency μ through calculation, the modulation order Q corresponding to the spectral efficiency with the minimum difference value with the first spectral efficiency μmay be selected from the MCS table 4 according to the first spectral efficiency μ_mAnd a code rate R. It should be understood that Table 4 is also exemplary onlyShould not impose any restrictions on the MCS table.

TABLE 4

Assuming that the spectrum efficiency calculated by the target terminal device through the above formula is 1.1, the modulation order Q can be known from the look-up table 4_mMay be 2, code rate R [1024 ]]May be 602, then the corresponding code rate R may be 0.5879.

According to the technical scheme provided by the embodiment of the application, because the first MCS information is calculated by the terminal device through the first time domain resource information, the first frequency domain resource information and the first TBS information, compared with a scheme in the prior art that the network device needs to indicate the first MCS information to the target terminal device through DCI, the overhead of the network device indicating the first MCS information through the DCI can be reduced, and therefore the performance of the communication system can be improved.

It was explained above that the target terminal device may determine the first time domain resource information from the first TBS information, the first MCS information and the first frequency domain resource information, or the target terminal device may determine the first MCS information from the first TBS information, the first time domain resource information and the first frequency domain resource information. In the foregoing process, the target terminal device may receive the first frequency domain resource information through DCI, which is described in detail below.

For example, the first information is the first frequency domain resource information, and the network device may send a first DCI to the target terminal device, where the first DCI indicates at least one target frequency domain resource set of at least two candidate frequency domain resource sets, and the frequency domain resources corresponding to the first frequency domain resource information are partial frequency domain resources preset or preconfigured in the at least one target frequency domain resource set. Correspondingly, the target terminal device receives the first DCI.

The candidate frequency domain resource set in the embodiment of the present application may include a plurality of subbands, where a subband condition occupied by at least one terminal device, a frequency domain resource occupied by each subband, and a configuration manner of at least one terminal device on each subband may be pre-configured by the network device.

As shown in fig. 5 (a), a schematic diagram of resources configured on a sub-band for different terminal devices according to an embodiment of the present application is provided. For example, as shown in (a) in fig. 5, terminal device 1 occupies 2 subbands, which are subband 1 and subband 2, respectively; the frequency domain resources occupied by each of the plurality of sub-bands may include which resources each sub-band includes, for example, the frequency domain resources occupied on sub-band 1 include RB0, RB1, RB2, RB3, RB4, RB5, RB6, and RB8, and the frequency domain resources occupied on sub-band 2 include RB0, RB1, RB2, RB3, RB4, RB5, RB6, and RB 7; further, fig. 5 (a) also shows a configuration manner of the sub-band occupied by the terminal device, for example, terminal device 1 occupies RB0 and RB1 on sub-band 1, and terminal device 1 occupies RB3 on sub-band 2.

For example, if the first DCI may indicate subband 1, the first frequency-domain resource information may be a partial frequency-domain resource in subband 1, and assuming that the target terminal device is terminal device 1, the target terminal device may determine that RB0 and RB1 are frequency-domain resources corresponding to the first frequency-domain resource information; if the first DCI indicates subband 2, the first frequency-domain resource information may be a partial frequency-domain resource in subband 2, and assuming that the target terminal device is terminal device 1, the target terminal device may determine that RB3 is a frequency-domain resource corresponding to the first frequency-domain resource information.

In the embodiment of the present application, the number of RBs allocated in each subband may be the same or different. For example, the number of RBs allocated for subband 1 and subband 2 may each be 10; or subband 1 may be assigned a number of 9 and subband 2 may be assigned a number of 10; the present application is not limited thereto.

In addition, the preset or preconfigured partial frequency domain resources in the embodiment of the present application may refer to that the frequency domain resources in the sub-band are discontinuous (or may also be referred to as discrete). Discontinuous frequency domain resources in this application may mean that frequency domain resources do not occupy the entire sub-band, e.g., frequency domain resources in sub-band 1 of terminal device 5 including RB4, RB5, and RB6, and frequency domain resources in sub-band 2 including RB1, RB2, and RB5, RB6, and RB7 may all be considered discontinuous in frequency domain resources.

Fig. 5 (b) is a schematic diagram of resources configured on a sub-band for different terminal devices according to another embodiment of the present application. The frequency domain resources on subband 1 include RB0, RB1, RB2, RB3, RB4, RB5, RB6, and RB 8; the frequency domain resources occupied by terminal device 1 on sub-band 1 are RB0 and RB1, and the frequency domain resources occupied by terminal device 2 on sub-band 1 are RB0, RB1, and RB 2.

In some cases, the terminal device may include multiple configuration modes on one subband, and based on this, the indication information included in the first DCI may also indicate a target configuration mode.

Exemplarily, when the at least one target frequency domain resource set is one target frequency domain resource set, and a preset or preconfigured frequency domain resource in the target frequency domain resource set includes multiple frequency domain resource configuration manners, the first DCI includes first indication information indicating a target configuration manner of a frequency domain resource of the target terminal device; alternatively, the first and second electrodes may be,

when the at least one target frequency domain resource set is a plurality of target frequency domain resource sets, and a preset or preconfigured frequency domain resource in at least one target frequency domain resource set of the plurality of target frequency domain resource sets includes a plurality of frequency domain resource configuration modes, the first DCI includes second indication information, the second indication information indicates a target configuration mode of a frequency domain resource of the target terminal device, and the target configuration mode belongs to the plurality of frequency domain resource configuration modes.

Fig. 6 (a) is a schematic diagram of resources configured on a sub-band for different terminal devices according to another embodiment of the present application. The target frequency domain resource set is subband 1, and the configuration mode of terminal device 1 is configuration mode 1, configuration mode 2, and configuration mode 3, the configuration mode of terminal device 2 may be configuration mode 4 and configuration mode 5, and the configuration mode of terminal device 3 is configuration mode 6, where the occupied frequency domain resources corresponding to each configuration mode may be the same or different, and are not limited.

If the target terminal device is terminal device 1, the first indication information in the first DCI is further used to indicate a target configuration mode of the frequency domain resource of the target terminal device. For example, if the first indication information indicates that the configuration mode 1 is the target configuration mode, the target terminal device may transmit or receive data using RB0 and RB 1.

It can be understood that, if the target terminal device is terminal device 3, since terminal device 3 only includes configuration 6 on subband 1, the first indication information may no longer indicate the target configuration, and terminal device 3 may transmit or receive data using RB3, RB5, and RB 8.

The at least one target frequency-domain resource set includes multiple target frequency-domain resource sets, that is, includes multiple subbands, for example, includes two subbands, as shown in (b) in fig. 6, which is a schematic diagram of resources configured on subbands by different terminal devices according to another embodiment of the present application. The target frequency domain resource set includes a subband 1 and a subband 2, and the configuration mode of the terminal device 1 may include a configuration mode 1, a configuration mode 2, and a configuration mode 3, the configuration mode of the terminal device 2 may include a configuration mode 4 and a configuration mode 5, and the configuration mode of the terminal device 3 may include a configuration mode 6, where the occupied frequency domain corresponding to each configuration mode may be the same or different, and is not limited. For example, if the target terminal device is terminal device 1, the second indication information in the first DCI is also used to indicate a target configuration scheme of the frequency domain resources of the target terminal device, for example, if the second indication information indicates that configuration scheme 1 is the target configuration scheme, the target terminal device may transmit or receive data using RB0 and RB1 on subband 1 or RB3 on subband 2.

It can be understood that, if the target terminal device is terminal device 3, since terminal device 3 only includes configuration 6, the second indication information may no longer indicate the target configuration, and terminal device 3 may transmit or receive data using RB3, RB5, and RB8 on subband 1 or RB2, RB3, and RB5 on subband 2. These are merely examples provided for understanding the present application, which includes and is not limited to the above examples.

Based on this, it is explained above that the third information may be the first time domain resource information or the first MCS information, and in some embodiments, the third information may also be the first frequency domain resource information, in which case the determination of the first frequency domain resource information may be related to the second length, see the following text.

Exemplarily, when the third information is the first frequency domain resource information, the first frequency domainThe resource information and a second length satisfy a third association relationship, the second length being determined by the first TBS information, the first MCS information, and the first time domain resource information. For example, the second length may be expressed as the number of RBs or the number of RBGs included in the first frequency-domain resource information. Alternatively, the second length may also be the length L of the occupied RB mentioned above_RB。

Wherein, the third association may mean that the second length is the same as the length in the first frequency domain resource information set; or may be that the difference between the second length and the length in the first frequency domain resource information is the smallest.

The first frequency domain resource information may be a default, or may be selected from a plurality of frequency domain resource information based on a priority rule.

Correspondingly, the target terminal device determines a second length based on the received first time domain resource information, the first MCS information and the first TBS information, and determines the first frequency domain resource information from the pre-configured frequency domain resource information set according to the second length. The network device may send the pre-configured set of frequency domain resource information to the target terminal device. Each frequency domain information in the frequency domain resource information set may include a resource indication type, a frequency domain resource mapping manner, a resource indication value of a frequency domain resource, a frequency domain resource starting RB, and an occupied RB length L_RBOr a bitmap of frequency domain resources, etc.

Specifically, for example, the second length indicates the number of RBs included in the first frequency-domain resource information, as described above, the target terminal device may calculate the number of RBs that needs to be occupied by using the first time-domain resource information, the first MCS information, and the first TBS information, and then select one frequency-domain resource information from the pre-configured frequency-domain resource information set as the first frequency-domain resource information.

For example, assume that the pre-configured frequency domain and frequency domain information set includes 3 kinds of frequency domain resource information, which are frequency domain resource information a, frequency domain resource information B, and frequency domain resource information C, respectively, and the number of RBs corresponding to the 3 kinds of frequency domain resource information is 9, 12, and 20, respectively. If the number of RBs needed according to the above step is 10, the target terminal device may select the frequency domain resource information B as the first time domain resource information because the difference between the second length and the length corresponding to the frequency domain resource information B is the smallest in the 3 types of frequency domain resource information under the condition that the difference is the smallest; if the number of RBs needed is 9, which is obtained according to the above steps, in the 3 types of resource information, under the condition that the second length is guaranteed to be the same as the length in the first frequency domain resource information set, the second length is the same as the length corresponding to the resource information a, and the target terminal device may select the frequency domain resource information a as the first time domain resource information.

In some embodiments, a plurality of frequency domain resource information in the preconfigured frequency domain resource information set all satisfy the above condition, and the selection may be performed based on a preset criterion. For example, the terminal device may default a certain resource information as the first frequency domain resource information, or the terminal device may select a certain resource information as the first frequency domain resource information based on a priority principle.

For example, it is assumed that the pre-configured frequency domain resource information set includes 5 kinds of frequency domain resource information, which are frequency domain resource information a, frequency domain resource information B, frequency domain resource information C, frequency domain resource information D, and frequency domain resource information E, and the number of RBs included in the 5 kinds of frequency domain resource information is 5, 6, 12, and 20, respectively. If the number of RBs required according to the above steps is 10, both the frequency domain resource information C and the frequency domain resource information D may be the first frequency domain resource information of the target terminal device.

In this case, one way is that the target terminal device may select the frequency domain resource information C as the first frequency domain resource information of the terminal device by default or select the frequency domain resource information D as the first frequency domain resource information of the target terminal device by default. Alternatively, the target terminal device may select based on a priority rule, for example, in the first case, the priority rule may be frequency domain resource information with a resource indication mode of Type 1. If the frequency domain resource information C and the frequency domain resource information D include the same number of frequency domain resources, but the resource indication mode corresponding to the frequency domain resource information C is Type 0, and the resource indication mode corresponding to the frequency domain resource information D is Type 1, the target terminal device may select the frequency domain resource information D as the first frequency domain resource information of the target terminal device; alternatively, in the second case, the priority rule may be configured in advance. For example, the network device may pre-configure the frequency domain resource information C to be better than the frequency domain resource information D, and the target terminal device may select the frequency domain resource information C as the first frequency domain resource information of the target terminal device.

If the second length indicates the number of RBGs included in the first frequency domain resource information, the first frequency domain resource information is determined based on the second length, which is similar to the number of RBs described above, and is not repeated here for brevity.

According to the technical scheme provided by the embodiment of the application, the target terminal device calculates the number of frequency domain resources through the first time domain resource information, the first MCS information and the first TBS information, and the first frequency domain resource information can be determined by combining a pre-configured frequency domain information set.

Exemplarily, when the third information is the first frequency domain resource information, the terminal device determines a second length according to the first TBS information, the first MCS information, and the first time domain resource information; and the terminal equipment determines the first frequency domain resource information according to the second length and the first starting position.

In this embodiment, the network device may send the index of the first MCS information to the target terminal device, and the target terminal device searches for the modulation order Q according to the index of the MCS_mAnd a code rate R; or the network device may also modulate the order Q_mAnd sending the sum code rate R to the target terminal equipment. Furthermore, the network device may also send an indication type of the frequency domain resources to the target terminal device, e.g. type 0 and type 1 as mentioned above.

In this embodiment of the application, the first time domain resource information may include one or more of a starting symbol S and a length L of the time domain resource, a starting and length indication value SLIV of the time domain resource, or a mapping manner of the time domain resource.

Accordingly, the target terminal device calculates the length of the frequency domain resource based on the received first time domain resource information, the first MCS information, and the first TBS information.

The number of REs to be occupied, i.e. N mentioned above, can be first calculated from the first TBS information and the first MCS information_REThen according to N_REAnd combining the first time domain resource information to obtain the length of the RB required to be occupied.

For ease of understanding, the following concepts are presented. REs may represent a minimum granularity of physical layer resources; for time domain resources, the minimum granularity may be 1 OFDM symbol; for frequency domain resources, the minimum granularity may be 1 subcarrier; the 12 subcarriers may be 1 RB.

Specifically, it is assumed that the number of REs to be occupied calculated according to the first TBS information and the first MCS information is 120, and if the time domain resource is 10 symbols, it can be obtained that the frequency domain resource needs to occupy 12 subcarriers, that is, the length of the RB to be occupied is 1.

For the frequency domain resource type of type 1, the length of the RB to be occupied, i.e. the length L of the RB mentioned above, can be obtained by calculating the received first time domain resource information, the first MCS information and the first TBS information_RBTherefore, the network device may not need to send the length L indicating the occupied frequency resource to the target terminal device_RBThus, DCI overhead can be saved and the performance of the communication system can be improved.

For the frequency domain resource type of type 0, as mentioned above, assuming that there are 10 RBGs, 10 bits of information are needed, i.e. the network device needs 10 bits of DCI overhead to indicate the frequency domain resource information to the target terminal device. Since the number of RBs to be occupied can be obtained by calculating the received first time domain resource information, the first MCS information, and the first TBS information, assuming that 5 RBGs are required, frequency domain resource information can be indicated to the target terminal device by 8 bits of information, which can reduce DCI overhead and further improve the performance of the communication system.

In particular toIt is assumed that 0 indicates that the corresponding RBG is not allocated to the target terminal device, and 1 indicates that the corresponding RBG is allocated to the target terminal device. If the number of resources to be allocated to the target terminal device is known, which is equivalent to knowing that there are several 1's and several 0's in the bit sequence, the overhead of DCI can be reduced. Again using the 10 RBGs described above as an example, the 10 RBGs have 2¹⁰As shown in (a) of fig. 7, the 1024 combinations may be indicated by 10-bit information. Since it can be determined by calculation that the number of RBs to be occupied is 5, there is at most

Such a combination, as shown in (b) of fig. 7, may indicate such 252 combinations to the target terminal device with 8 bits of information.

In the technical solution provided in the embodiment of the present application, since the second length of the first frequency domain resource information is determined by the terminal device itself through the first time domain resource information, the first MCS information, and the first TBS information, compared with a scheme in the prior art in which the network device needs to indicate the second length of the frequency domain resource information to the target terminal device through DCI, the cost of the network device indicating the length of the frequency domain resource information using DCI can be reduced, so that the performance of the communication system can be improved.

Illustratively, the network device sends a second DCI to a target terminal device, where the second DCI includes a plurality of information blocks, one of the information blocks corresponds to the target terminal device, and the one information block includes third indication information indicating a first resource block of the target terminal device, where the first resource block includes at least one of the first TBS, the first MCS information, the first time domain resource information, or the first frequency domain resource information, or includes partial information of the at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information; and the network equipment sends second configuration information to the target terminal equipment, wherein the second configuration information comprises the index of the information block corresponding to the target terminal equipment. Correspondingly, the target terminal device receives the second DCI and the second configuration information.

Specifically, the network device may transmit the second DCI and the second configuration information to the target terminal device. Accordingly, the target terminal device may determine the content of the received information according to the third indication information included in one information block in the second DCI and the index of one information block included in the second configuration information.

It should be noted that, in this embodiment of the present application, the first resource block may be at least one of first TBS information, first MCS information, first time domain resource information, or first frequency domain resource information, for example, may be the first TBS information; alternatively, the first resource block may be the first TBS information and the first MCS information; or, the first resource block may be the first TBS information and the first MCS information and the first time domain resource information; alternatively, the first resource block may be the first TBS information, the first MCS information, the first time domain resource information, and the first frequency domain resource information.

It should be understood that, in the case that the first resource block includes one or more kinds of information, the included information is only an example, and may also be other information, and for brevity, the description is not repeated here.

The first resource block in the embodiment of the present application may also be partial information in at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information.

For example, if the first resource block includes partial information of one type of information, the first resource block may include partial information in the first TBS information, or the first resource block may include partial information in the first MCS information, or the first resource block may include partial information in the first time domain resource information, or the first resource block may include partial information in the first frequency domain resource information.

If the first resource block may include partial information of two kinds of information, the first resource block may include partial information of each of the two kinds of information, or partial information of one kind of information of the two kinds of information. Taking the first TBS information and the first MCS information as an example, the first resource block may include partial information of the first TBS information and partial information in the first MCS information; alternatively, the first resource block may also include partial information of the first TBS information and the first MCS information; alternatively, the first resource block may also include partial information of the first TBS information and the first MCS information. This is not a particular limitation of the present application.

For other possibilities, similar to the examples given above, further description is omitted here for the sake of brevity.

If the first resource block may also include partial information of three kinds of information, the first resource block may include partial information of each of the three kinds of information, or include partial information of at most two kinds of information of the three kinds of information. Taking the first TBS information, the first MCS information, and the first time domain resource information as an example, the first resource block may include partial information of the first TBS information, partial information of the first MCS information, and partial information of the first time domain resource information; alternatively, the first resource block may also include the first TBS information, the partial information of the first MCS information, and the partial information in the first time domain resource information, or the first resource block may include the partial information of the first TBS information, the partial information of the first MCS information, and the first time domain resource information.

As for other possibilities, similar to the examples given above, further description is omitted here for the sake of brevity.

If the first resource block may also include partial information of four kinds of information, the first resource block may include partial information of each kind of information of the four kinds of information, or include partial information of at most three kinds of information of the four kinds of information. This implementation is similar to that described above and, for brevity, will not be described again here.

In addition, in this embodiment, the second DCI may include a plurality of information blocks, where one information block of the plurality of information blocks corresponds to the target terminal device, and other information blocks of the plurality of information blocks may correspond to other terminal devices.

For example, as shown in (a) of fig. 8, the second DCI includes a plurality of information blocks, which are information block 1, information block 2, information block 3, information block 4, and information block 5, and as can be seen from the figure, terminal device 1 occupies information block 1, terminal device 2 occupies information block 2, terminal device 3 occupies information block 3, terminal device 4 occupies information block 4, and terminal device 5 occupies information block 5, and if terminal device 1 is a target terminal device in the implementation of the present application, the target terminal device occupies information block 1.

If the identifier "0, 1, 2, 3, 4" respectively corresponds to the information block 1, the information block 2, the information block 3, the information block 4, and the information block 5 in the graph, the network device may send the identifier "0" to the target terminal device, and the target terminal device may determine that the information block 1 is an information block in the present application.

It is to be understood that the above-mentioned figures are only exemplary, and the information blocks occupied by different terminal devices in the plurality of terminal devices are not limited to those shown in the above-mentioned figures, and may be in other ways without limitation.

For example, as shown in (b) of fig. 8, the terminal device 1 may occupy the information block 1 and the information block 2, the terminal device 2 may occupy the information block 3 and the information block 4, and the terminal device 3 may occupy the information block 5.

For example, as shown in (c) of fig. 8, both the terminal device 1 and the terminal device 2 may occupy the information block 1 and the information block 2, and the terminal device 3 may occupy the information block 3, the information block 4, and the information block 5.

It should be noted that, since the information block occupied by the at least one terminal device is configured by the network device, the network device may know the information block occupied by each terminal device in the at least one terminal device; for the terminal device, each terminal device in at least one terminal device can know the information block occupied by itself, and does not know the information blocks occupied by other terminal devices.

As shown in fig. 9, a flowchart of another communication method provided in the embodiment of the present application is schematically illustrated, where the communication method may be executed by a terminal device and a network device, or may also be executed by a chip in the terminal device and a chip in the network device. The communication method 900 may include:

s910, the network device sends first configuration information to the terminal device, wherein the first configuration information includes a first information group set of the target terminal device.

S920, the terminal device receives the first configuration information.

In this embodiment, the network device may send the first configuration information to the target terminal device through a high-level signaling, that is, the network device may send the high-level signaling to the target terminal device, where the high-level signaling may include the first configuration information.

The higher layer signaling in the embodiment of the present application may be signaling of a MAC layer or signaling of an RRC layer, and the present application is not limited to this specifically.

S930, the network device sends a first DCI to the terminal device, where the first DCI includes a plurality of target information blocks of the terminal devices, where one information block of the target information blocks corresponds to the target terminal device, and the one information block includes first indication information, where the first indication information is used to activate a first target information group of the target terminal device, and the first target information group belongs to the first information group set.

S940, the terminal equipment receives the first DCI.

It should be particularly noted that the execution sequence of the above example is only one execution sequence of the above example, and may also be S910, S930, S920, and S940. The execution steps of the above examples are not specifically limited in this application.

The first DCI in the embodiment of the present application may include a plurality of target information blocks, and one information block of the plurality of target information blocks may correspond to a target terminal device, and the other target information blocks of the plurality of target information blocks may correspond to other terminal devices. For details, reference may be made to (a) in fig. 8, which is not described herein again.

It is to be understood that the above-mentioned figures are only exemplary, and the information blocks occupied by different terminal devices in the plurality of terminal devices are not limited to those shown in the above-mentioned figures, but may be in other ways, such as those shown in (b) and (c) of fig. 8, without limitation. For details, reference may be made to the above description of (b) and (c) in fig. 8, which are not repeated herein.

The first indication information included in one information block in the embodiment of the present application may activate a first target information group, where the first target information group may be one or multiple, and is not limited.

For example, the network device may further send second configuration information to a target terminal device, where the second configuration information includes an index of the information block corresponding to the target terminal device. Accordingly, the target terminal device may receive the second configuration information.

In this embodiment of the application, the information block that the target terminal device determines to occupy may be determined by an index of an information block corresponding to the target terminal device included in the second configuration information, and if the identifier "0, 1, 2, 3, 4" respectively corresponds to the information block 1, the information block 2, the information block 3, the information block 4, and the information block 5 in the diagram, the network device may send the identifier "0" to the target terminal device, and the target terminal device may determine that the information block 1 is an information block in this application.

Illustratively, the first set of information groups includes at least one candidate target information group, and the candidate target information group includes at least one of first TBS information, first MCS information, first time domain resource information, or first frequency domain resource information, or includes partial information in at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information, and the partial information may be partial information in one kind of information or partial information included in a plurality kinds of information.

The candidate target information set in the embodiment of the present application may include at least one of first TBS information, first MCS information, first time domain resource information, or first frequency domain resource information, for example, the candidate target information set may include the first TBS information; or, the candidate target information group includes the first TBS information and the first MCS information; alternatively, the candidate target information group may include the first TBS information, the first MCS information, and the first time domain resource information; alternatively, the candidate target information set may include the first TBS information, the first MCS information, the first time domain resource information, and the first frequency domain resource information.

It should be understood that, in the case that the candidate target information group includes one or more kinds of information, the included information is only an example, and may also be other information, and for brevity, the details are not described here again.

The candidate target information set in the embodiment of the present application may include partial information in at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information.

For example, if the candidate target information set includes partial information of one type of information, the candidate target information set may include partial information in the first TBS information, or the candidate target information set may include partial information in the first MCS information, or the candidate target information set may include partial information in the first time domain resource information, or the candidate target information set may include partial information in the first frequency domain resource information.

For example, if the candidate object information group may include partial information of two kinds of information, the candidate object information group may include partial information of each of the two kinds of information, or may include partial information of one kind of information of the two kinds of information. Taking the first TBS information and the first MCS information as an example, the candidate target information set may include partial information of the first TBS information and partial information in the first MCS information; the candidate target information set may include the first TBS information and the first MCS information, or the candidate target information set may include the first MCS information and the first TBS information.

If the candidate object information group may also include partial information of three kinds of information, the candidate object information group may include partial information of each of the three kinds of information, or include partial information of at most two kinds of information of the three kinds of information. Taking the first TBS information, the first MCS information, and the first time domain resource information as an example, the candidate target information set may include partial information of the first TBS information, partial information of the first MCS information, and partial information of the first time domain resource information; alternatively, the candidate target information set may include the first TBS information, part of the first MCS information, and part of the first time domain resource information, or the candidate target information set may include part of the first TBS information, part of the first MCS information, and the first time domain resource information.

If the candidate object information group may also include partial information of four kinds of information, the candidate object information group may include partial information of each of the four kinds of information, or include partial information of at most three kinds of information of the four kinds of information. This implementation is similar to that described above and, for brevity, will not be described again here.

Illustratively, if the first set of information groups includes at least two of the candidate target information groups, the first indication information is used to activate the first target information group from the at least two candidate target information groups.

In an embodiment of the application, in a case that the first information group set includes a plurality of candidate target information groups, the first indication information may activate one or more first target information groups as target terminal devices from the plurality of candidate target information groups.

Assuming that the first set of information groups includes 2 candidate target information groups, the first indication information may activate one or two first target information groups as target terminal devices from the 2 candidate target information groups. For example, assuming that the first information group set includes 2 candidate target information groups, i.e. candidate target information group 1 and candidate target information group 2, respectively, the first indication information may indicate candidate target information group 1 and/or candidate target information group 2 as the first target information group of the target terminal device, without limitation.

According to the scheme provided by the application, since the information in the candidate target information group is configured by the first configuration information, the first indication information can be selected from the configured information, and the information group includes information of a plurality of terminal devices, compared with a scheme in the prior art in which a network device needs to frequently indicate an information block to each terminal device through a plurality of DCIs, the DCI overhead can be further saved.

For example, if the candidate target information group includes the first TBS information, the first MCS information, and the first time domain resource information, the network device may further send a second DCI to the target terminal device, where the second DCI indicates at least one target frequency domain resource set of at least two candidate frequency domain resource sets, and the frequency domain resource corresponding to the first frequency domain resource information is a preset or preconfigured partial frequency domain resource in the at least one target frequency domain resource set. Accordingly, the target terminal device may receive the second DCI.

The candidate frequency domain resource set in the embodiment of the present application may include a plurality of subbands, where a subband condition occupied by at least one terminal device, a frequency domain resource occupied by each subband in the plurality of subbands, and a configuration manner of the at least one terminal device on each subband may all be pre-configured by the network device.

For the subbands included in the candidate frequency domain resource information set, reference may be made to (a) and (b) in fig. 5, and details are not repeated.

Exemplarily, if the at least one target frequency domain resource set is one target frequency domain resource set, and a preset or preconfigured frequency domain resource in the target frequency domain resource set includes multiple frequency domain resource configuration manners, the first DCI includes second indication information indicating a target configuration manner of a frequency domain resource of the target terminal device; alternatively, the first and second electrodes may be,

if the at least one target frequency domain resource set is a plurality of target frequency domain resource sets, and a preset or preconfigured frequency domain resource in at least one target frequency domain resource set of the plurality of target frequency domain resource sets includes a plurality of frequency domain resource configuration modes, the first DCI includes third indication information, the third indication information indicates a target configuration mode of a frequency domain resource of the target terminal device, and the target configuration mode belongs to the plurality of frequency domain resource configuration modes.

In this embodiment of the application, when at least one target frequency domain resource set includes one target frequency domain resource set, reference may be made to (a) and (b) in fig. 6 for subbands included in the candidate frequency domain resource information set, and details are not repeated.

For example, the network device may further send fourth indication information to the terminal device, where the fourth indication information indicates that the target terminal device terminates using the target resource corresponding to the first target information group. Accordingly, the terminal device may receive the fourth indication information.

For example, before receiving the fourth indication information, the terminal device may use the target resource corresponding to the first target information group according to a preset period.

In this embodiment of the application, the network device may send the fourth indication information to the target terminal device through the DCI, that is, the network device may send one piece of DCI to the target terminal device, where the DCI may include the fourth indication information and indicate the target terminal device to terminate using the target resource corresponding to the first target information group.

In other words, the target terminal device may continuously use the target resource corresponding to the first target information group according to a preset period before receiving the fourth indication information.

Fig. 10 and 11 are schematic structural diagrams of a possible communication device provided in an embodiment of the present application. The communication devices can realize the functions of the terminal device or the network device in the above method embodiments, and therefore, the beneficial effects of the above method embodiments can also be realized. In the embodiment of the present application, the communication device may be the terminal device 130 or 140 shown in fig. 1, or may be the access network device 120 shown in fig. 1, or may be a module (e.g., a chip) applied to the terminal device or the access network device.

Fig. 10 is a schematic block diagram of a communication apparatus 1000 according to an embodiment of the present application, where the apparatus 1000 may include a transceiver module 1010 and a processing module 1020.

When the communication apparatus 1000 is used to implement the functions of the terminal device in the method embodiment shown in fig. 4, the transceiver module 1010 is configured to receive the first transport block size TBS information, the first information, and the second information. The processing module 1020 is configured to determine third information according to the first TBS information, the first information, and the second information, where the first information, the second information, and the third information are any one of first modulation and coding MCS information, first time domain resource information, and first frequency domain resource information, and the first information, the second information, and the third information are different from each other.

When the communication apparatus 1000 is used to implement the function of the network device in the embodiment of the method shown in fig. 4, the processing module 1020 is configured to determine the third information; the transceiver module 1010 is configured to send first transport block size, TBS, information, and second information, where the first TBS information, the first information, and the second information are used to indicate the third information; wherein the first information, the second information, and the third information are any one of first modulation and coding MCS information, first time domain resource information, and first frequency domain resource information, respectively, and the first information, the second information, and the third information are different from each other.

When the communications apparatus 1000 is configured to implement the functions of the terminal device in the method embodiment shown in fig. 9, the processing module 1020 is configured to store an instruction for instructing the transceiver module 1010 to receive first configuration information, where the first configuration information includes a first information group set of a target terminal device; and receiving first Downlink Control Information (DCI), wherein the first DCI comprises a plurality of target information blocks, one information block of the plurality of target information blocks corresponds to the target terminal equipment, the one information block comprises first indication information, the first indication information is used for activating a first target information group of the target terminal equipment, and the first target information group belongs to the first information group set

When the communications apparatus 1000 is used to implement the function of the network device in the method embodiment shown in fig. 9, the processing module is configured to store an instruction for instructing the transceiver module to transmit first configuration information, where the first configuration information includes a first information group set of the target terminal device; and sending first DCI downlink control information, where the first DCI includes a plurality of target information blocks of a plurality of terminal devices, where one information block of the plurality of target information blocks corresponds to the target terminal device, where the one information block includes first indication information, where the first indication information is used to activate a first target information group of the target terminal device, and the first target information group belongs to the first information group set.

For a more detailed description of the transceiver module 1010 and the processing module 1020, reference may be made to the related description of the above method embodiments, and therefore, no further description is provided here.

As shown in fig. 11, the communication device 1100 includes a processor 1110 and an interface circuit 1120. The processor 1110 and the interface circuit 1120 are coupled to each other. It is understood that the interface circuit 1120 may be a transceiver or an input-output interface. Optionally, the communication device 1100 may further include a memory 1130 for storing instructions to be executed by the processor 1110 or for storing input data required by the processor 1110 to execute the instructions or for storing data generated by the processor 1110 after executing the instructions.

When the communication device 1100 is configured to implement the method in the above method embodiments, the processor 1110 is configured to perform the functions of the processing module 1020, and the interface circuit 1120 is configured to perform the functions of the transceiver module 1010.

When the communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiment. The terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, wherein the information is sent to the terminal device by the network device; or, the terminal device chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device, where the information is sent by the terminal device to the network device.

When the communication device is a chip applied to a network device, the network device chip implements the functions of the network device in the above method embodiments. The network device chip receives information from other modules (such as a radio frequency module or an antenna) in the network device, wherein the information is sent to the network device by the terminal device; alternatively, the network device chip sends information to other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the network device to the terminal device.

It is understood that the processor in the embodiments of the present application may be a Central Processing Unit (CPU), other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The general purpose processor may be a microprocessor, but may be any conventional processor.

The method steps in the embodiments of the present application may be implemented by hardware, or may be implemented by software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read-Only Memory (ROM), programmable ROM, Erasable PROM (EPROM), Electrically EPROM (EEPROM), registers, a hard disk, a removable hard disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in an access network device or a terminal device. Of course, the processor and the storage medium may reside as discrete components in an access network device or a terminal device.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer program or instructions may be stored in or transmitted over a computer-readable storage medium. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server that integrates one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; or an optical medium, such as a Digital Versatile Disc (DVD); it may also be a semiconductor medium, such as a Solid State Disk (SSD).

In the embodiments of the present application, unless otherwise specified or conflicting with respect to logic, the terms and/or descriptions in different embodiments have consistency and may be mutually cited, and technical features in different embodiments may be combined to form a new embodiment according to their inherent logic relationship.

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. In the description of the text of the present application, the character "/" generally indicates that the former and latter associated objects are in an "or" relationship; in the formula of the present application, the character "/" indicates that the preceding and following related objects are in a relationship of "division".

It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic.

Claims

1. A method of communication, comprising:

receiving first transport block size, TBS, information, first information, and second information;

determining third information according to the first TBS information, the first information and the second information;

wherein the first information, the second information and the third information are any one of first modulation and coding MCS information, first time domain resource information and first frequency domain resource information, respectively, and the first information, the second information and the third information are different from each other.

2. The method of claim 1, wherein the receiving the first TBS information comprises:

receiving a high-level signaling from a network device, wherein the high-level signaling comprises the first TBS information.

3. The method of claim 1 or 2, wherein when the third information is first time domain resource information, the first time domain resource information and a first length satisfy a first association relationship, and the first length is determined by the first TBS information, the first MCS information, and the first frequency domain resource information.

4. The method of claim 3, wherein the first length represents a number of symbols included in the first time domain resource information.

5. The method of claim 1 or 2, wherein when the third information is the first MCS information, a second association relationship is satisfied between a spectral efficiency in the first MCS information and a first spectral efficiency, and the first spectral efficiency is determined by the first time domain resource information, the first frequency domain resource information, and the first TBS information.

6. The method according to any one of claims 1 to 5, wherein if the first information is the first frequency domain resource information, the receiving the first information comprises:

receiving first Downlink Control Information (DCI), wherein the first DCI indicates at least one target frequency domain resource set of at least two candidate frequency domain resource sets, and frequency domain resources corresponding to the first frequency domain resource information are partial frequency domain resources preset or preconfigured in the at least one target frequency domain resource set.

7. The method of claim 6, wherein when the at least one target frequency domain resource set is one target frequency domain resource set, and a preset or preconfigured frequency domain resource in the target frequency domain resource set comprises multiple frequency domain resource configurations, the first DCI comprises first indication information indicating a target configuration of frequency domain resources of a target terminal device; alternatively, the first and second electrodes may be,

8. The method of claim 1 or 2, wherein when the third information is the first frequency domain resource information, the first frequency domain resource information and a second length satisfy a third relationship, and the second length is determined by the first TBS information, the first MCS information, and the first time domain resource information.

9. The method of claim 1 or 2, wherein when the third information is the first frequency-domain resource information, the determining the first frequency-domain resource information according to the first TBS information, the first information, and the second information comprises:

determining a second length according to the first TBS information, the first MCS information and the first time domain resource information;

determining the first frequency domain resource information according to the second length and the first starting position.

10. The method according to claim 8 or 9, wherein the second length represents the number of resource blocks, RBs, or the number of resource block groups, RBGs, comprised by the first frequency domain resource information.

11. The method of any of claims 1-10, wherein the receiving the first TBS information, the first information, and the second information comprises:

receiving second DCI, where the second DCI includes a plurality of information blocks, one of the information blocks corresponds to a target terminal device, the one information block includes third indication information, the third indication information indicates a first resource block of the target terminal device, and the first resource block includes at least one of the first TBS, the first MCS information, the first time domain resource information, or the first frequency domain resource information, or includes partial information of the at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information;

and receiving second configuration information, wherein the second configuration information comprises the index of the information block corresponding to the target terminal equipment.

12. A method of communication, comprising:

determining third information;

sending first Transport Block Size (TBS) information, first information and second information, wherein the first TBS information, the first information and the second information are used for indicating the third information;

wherein the first information, the second information, and the third information are any one of first modulation and coding MCS information, first time domain resource information, and first frequency domain resource information, respectively, and the first information, the second information, and the third information are different from each other.

13. The method of claim 12, wherein the sending the first TBS information comprises:

and sending a high-level signaling to the target terminal equipment, wherein the high-level signaling comprises the first TBS information.

14. The method of claim 12 or 13, wherein when the third information is first time domain resource information, the first time domain resource information and a first length satisfy a first association relationship, and the first length is related to the first TBS information, the first MCS information and the first frequency domain resource information.

15. The method of claim 14, wherein the first length represents a number of symbols included in the first time domain resource information.

16. The method of claim 12 or 13, wherein when the third information is the first MCS information, a second association relationship is satisfied between a spectral efficiency in the first MCS information and a first spectral efficiency, and the first spectral efficiency is related to the first time domain resource information, the first frequency domain resource information, and the first TBS information.

17. The method according to any of claims 12 to 16, wherein the first information is the first frequency domain resource information, and wherein the sending the first information comprises:

sending first Downlink Control Information (DCI), wherein the first DCI indicates at least one target frequency domain resource set of at least two candidate frequency domain resource sets, and frequency domain resources corresponding to the first frequency domain resource information are partial frequency domain resources preset or preconfigured in the at least one target frequency domain resource set.

18. The method of claim 17, wherein when the at least one target frequency domain resource set is one target frequency domain resource set, and a preset or preconfigured frequency domain resource in the target frequency domain resource set comprises multiple frequency domain resource configurations, the first DCI includes first indication information indicating a target configuration of frequency domain resources of a target terminal device; and/or the presence of a gas in the gas,

when the at least one target frequency domain resource information set is a plurality of target frequency domain resource sets, and a preset or preconfigured frequency domain resource in at least one target frequency domain resource set of the plurality of target frequency domain resource sets includes a plurality of frequency domain resource configuration modes, the first DCI includes second indication information, the second indication information indicates a target configuration mode of a frequency domain resource of the target terminal device, and the target configuration mode belongs to the plurality of frequency domain resource configuration modes.

19. The method of claim 12 or 13, wherein when the third information is the first frequency-domain resource information, the first frequency-domain resource information and a second length satisfy a third association relationship, and the second length is associated with the first TBS information, the first MCS information and the first time-domain resource information.

20. The method of claim 19, wherein the second length represents a number of Resource Blocks (RBs) or a number of RBGs included in the first frequency-domain resource information.

21. The method of any of claims 12-20, wherein the sending the first TBS information, the first information, and the second information comprises:

sending a second DCI, where the second DCI includes a plurality of information blocks, one of the information blocks corresponds to a target terminal device, and the one information block includes third indication information, where the third indication information indicates a first resource block of the target terminal device, and the first resource block includes at least one of the first TBS, the first MCS information, the first time domain resource information, or the first frequency domain resource information, or includes partial information of the at least one of the first TBS information, the first MCS information, the first time domain resource information, or the first frequency domain resource information;

and sending second configuration information, wherein the second configuration information comprises the index of the information block corresponding to the target terminal equipment.

22. A communications device comprising a processor and a communications interface for receiving signals from or transmitting signals to or from a communications device other than the communications device, the processor being operable by logic circuitry or executing code instructions to implement a method as claimed in any one of claims 1 to 11 or 12 to 21.

23. A computer-readable storage medium, characterized in that it stores a computer program which, when executed, implements the method of any one of claims 1 to 11 or 12 to 21.

24. A communication device in a closed-loop application scenario, comprising: comprising means for performing the method of any one of claims 1 to 11 or 12 to 21.