A communication method and a communication device

Abstract

The application provides a communication method and a communication device. The communication method comprises the following steps: a network device sends a downlink control information (DCI) to a terminal device, the DCI is used for indicating a first time domain resource in a first time slot, the first time domain resource is composed of M sub time domain resources, at least two adjacent sub time domain resources in the M sub time domain resources are separated by a first time period, and M is an integer greater than or equal to 2; and the network device sends a physical downlink shared channel (PDSCH) on the first time domain resource. The scheme is used in a communication and sensing integrated system, and can improve the resource utilization of the communication and sensing integrated system.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly to a communication method and a communication device. Background Technology

[0002] Radar sensing, also known as radar detection, is widely used in air and ground traffic monitoring, weather detection, security monitoring, and electromagnetic imaging. With increasing detection demands, using radar alone for wide-area detection becomes costly, especially in continuous network deployments. Considering the abundant spectrum resources and large-scale, wide-coverage deployment of wireless communication, radar sensing and wireless communication can be integrated—a communication-sensing system—which satisfies both wireless communication and detection requirements. Currently, the signals in wireless communication systems are primarily used for communication; therefore, improving the resource utilization rate of this integrated communication-sensing system is a pressing issue. Summary of the Invention

[0003] The communication method and apparatus provided in this application can improve the resource utilization rate of the integrated communication and sensing system.

[0004] Firstly, a communication method is provided, which can be executed by a network device or a chip configured in the network device. The network device can be an access network device or a network unit implementing the corresponding functions of the access network device. The method includes: the network device sending downlink control information (DCI) to a terminal device, the DCI indicating a first time-domain resource in a first time slot, wherein the first time-domain resource consists of M sub-time-domain resources, at least two adjacent sub-time-domain resources are spaced apart by a first time interval, and M is an integer greater than or equal to 2; and transmitting a Physical Downlink Shared Channel (PDSCH) on the first time-domain resource.

[0005] Applying the above scheme to an integrated communication and sensing system can improve the resource utilization of the system. Specifically, by designing a new DCI to notify the aforementioned discontinuous sub-time domain resources, the overhead of using the DCI can be reduced, thus improving resource utilization. Furthermore, using the signal carried by the PDSCH as the sensing signal further improves resource utilization. Even further, transmitting sensing signals through discontinuous time domain resources can reduce the time domain resources occupied by the sensing signals, further improving resource utilization. In addition, this newly designed DCI allows for more flexible allocation of time domain resources.

[0006] In conjunction with the first aspect, one possible design also includes receiving an echo signal of the signal carried by the PDSCH, wherein the echo signal is used to sense the first target.

[0007] In conjunction with the first aspect, one possible design further includes sending Radio Resource Control (RRC) signaling to the terminal device before sending Downlink Control Information (DCI) to the terminal device. The RRC signaling indicates at least one candidate time-domain resource, where each candidate time-domain resource corresponds to an index, and the at least one candidate time-domain resource includes the first time-domain resource. The DCI specifically includes the index corresponding to the first time-domain resource. This scheme can reduce the signaling overhead of the DCI and increase the reliability of signaling transmission.

[0008] Secondly, a communication method is provided, which can be executed by a terminal device or a chip configured in the terminal device. The method includes: the terminal device receiving downlink control information (DCI), the DCI indicating a first time-domain resource in a first time slot, the first time-domain resource consisting of M sub-time-domain resources, wherein at least two adjacent sub-time-domain resources are spaced apart by a first time interval, where M is an integer greater than or equal to 2; and the terminal device receiving a physical downlink shared channel (PDSCH) on the first time-domain resource.

[0009] By designing a new DCI to notify the aforementioned discontinuous time-domain resources, the overhead of using DCI can be reduced, and resource utilization can be improved. Furthermore, this newly designed DCI allows for more flexible allocation of time-domain resources.

[0010] In conjunction with the second aspect, one possible design further includes: receiving Radio Resource Control (RRC) signaling before receiving the DCI, the RRC signaling indicating at least one candidate time-domain resource, wherein each candidate time-domain resource corresponds to an index, and the at least one candidate time-domain resource includes the first time-domain resource; the DCI contains the index corresponding to the first time-domain resource. This scheme can reduce the signaling overhead of directly using the DCI and increase the reliability of signaling transmission.

[0011] In combination with any of the above aspects or designs, one possible design also includes receiving an echo signal of the signal carried by the PDSCH, wherein the echo signal is used to sense the first target.

[0012] In one possible design, combining any of the above aspects or designs, the DCI includes the start position information of each of the M sub-time domain resources and / or the duration information of each of the M sub-time domain resources. In this scheme, the DCI provides more comprehensive information and more flexible resource scheduling.

[0013] Understandably, the start position information of each sub-time domain resource can be included in RRC signaling or fixed in the protocol, or the duration information of each sub-time domain resource can be included in RRC signaling or fixed in the protocol. That is, the above information can be included in a combined RRC signaling and DCI signaling, or part of the above information can be included in RRC signaling, DCI signaling, or a combined signaling, while another part can be fixed in the protocol. This can further reduce DCI overhead and improve the transmission reliability of the above information.

[0014] In combination with any of the above aspects or designs, in one possible design, the DCI includes at least one of the following: the start position information S1 of the first sub-time domain resource among the M sub-time domain resources, the duration information L1 of the first sub-time domain resource, and the offset O1, wherein the start position information S1 of the i-th sub-time domain resource among the M sub-time domain resources is... i There exists a first association relationship with at least one of S1, L1, and O1. Specifically, the first association relationship can be S i =n*S1, S i =i*S1,S i =n*L1+1,S i =n*O1,S i =S i-1 +O1, S i =S i-1 -1+O1,S i =S i-1 +O1, or S i =S i-1 +L1-1+O1, the duration information L of the i-th sub-time domain resource i =L1, where i is an integer greater than or equal to 2 and less than or equal to M. This scheme can reduce the signaling overhead of DCI while ensuring a certain degree of resource scheduling flexibility.

[0015] Understandably, when a portion of S1, L1, and O1 is included in the DCI, the other portions can be included in higher-layer signaling or fixed in the protocol, or one portion of the other portions can be included in higher-layer signaling while another portion is fixed in the protocol. This can further reduce DCI overhead and improve the reliability of the aforementioned information transmission.

[0016] In combination with any of the above aspects or designs, in one possible design, the DCI includes the start position information S1 of the first sub-time domain resource among the M sub-time domain resources, and the duration information L of the i-th sub-time domain resource among the M sub-time domain resources. i And at least one of the offset O1, wherein the starting position information S of the i-th sub-temporal resource i With S1, Li At least one of O1 has a second association relationship. Specifically, the second association relationship can be S. i =n*S1, S i =i*S1,S i =n*O1,S i =nS1+L i-1 -1,S i =S1+nL i-1 -1, or S i =S i-1 +L1-1+O1, where i is an integer greater than or equal to 2 and less than or equal to M. This scheme can reduce the signaling overhead of DCI while ensuring a certain degree of resource scheduling flexibility.

[0017] Understandably, the above S1, L i When a portion of O1 is included in the DCI, the other portions can be included in higher-layer signaling or fixed in the protocol, or a portion of the other portions can be included in higher-layer signaling while the remaining portion is fixed in the protocol. This can further reduce DCI overhead and improve the reliability of the aforementioned information transmission.

[0018] In combination with any of the above aspects or designs, in one possible design, the DCI includes the start position information S1 of the first sub-time domain resource among the M sub-time domain resources, the duration information L1 of the first sub-time domain resource, and the offset O of the i-th sub-time domain resource among the M sub-time domain resources. i At least one of them, wherein the starting position information S of the i-th sub-time domain resource i With the aforementioned S1, L1, O i At least one of them has a third association relationship. Specifically, the third association relationship can be S i =i*S1,S i = (i-1)*S1+O i S i =i*S1+O i , or S i =S i-1 +L1-1+O i The duration information L of the i-th sub-time domain resource i =L1, where i is an integer greater than or equal to 2 and less than or equal to M. This scheme can reduce the signaling overhead of DCI while ensuring a certain degree of resource scheduling flexibility.

[0019] Understandably, the above S1, L1, O iWhen a portion of the information is included in the DCI, the other portions can be included in higher-layer signaling or fixed in the protocol, or a portion of the other portions can be included in higher-layer signaling while the remaining portion is fixed in the protocol. This can further reduce the overhead of the DCI and improve the reliability of the transmission of the aforementioned information.

[0020] In combination with any of the above aspects or designs, in one possible design, the DCI includes at least one of the following: the start position information S1 of the first sub-time domain resource among the M sub-time domain resources, the duration information L of the first sub-time domain resource, and first indication information. When the first indication information is a first value, it indicates the start position information S1 of the i-th sub-time domain resource among the M sub-time domain resources. i Determined based on at least one of S1 and L. Specific S i Satisfy S i =nS i-1 +L, the duration information L of the i-th sub-time domain resource i =L, where i and n are integers greater than or equal to 2 and less than or equal to M. This scheme can reduce the signaling overhead of DCI while ensuring a certain degree of resource scheduling flexibility.

[0021] Understandably, when a portion of the aforementioned S1, L, and first indication information is included in the DCI, the other portions can be included in higher-layer signaling or fixed in the protocol, or one or more of the other portions can be included in RRC signaling while another portion is fixed in the protocol. This can further reduce the overhead of the DCI and improve the reliability of the transmission of the aforementioned information.

[0022] In one possible design, combining any of the above aspects or designs, the DCI includes bitmap information, wherein the bitmap information contains N bits, each corresponding one-to-one with the N time units contained in the first time slot, and the M sub-time domain resources include time units corresponding to bits with a value of "1", but do not include time units corresponding to bits with a value of "0". This scheme ensures better resource scheduling flexibility.

[0023] Understandably, the aforementioned DCI can be replaced with higher-layer signaling such as RRC messages. For example, the bitmap information mentioned above can be included in higher-layer signaling. After sending the higher-layer signaling, the network device sends a DCI to the terminal device, which indicates the use or activation of the first time-domain resource. Further, the network device uses the activated first time-domain resource to send a PDSCH to the terminal device. Correspondingly, the terminal device receives the DCI used to activate the first time-domain resource and receives the PDSCH on the first time-domain resource according to the DCI. This scheme can reduce DCI overhead and improve signaling transmission reliability.

[0024] In combination with any of the above aspects or any design, in one possible design, the length of the first time period is the length of X symbols, where X is an integer greater than or equal to 1; or it is Y ms, where Y is greater than 0.

[0025] In combination with any of the above aspects or any design, in one possible design, the time unit is a symbol or a mini slot.

[0026] Thirdly, a communication device is provided, comprising modules or units for performing the methods in any possible design of the first aspect described above.

[0027] Fourthly, a communication device is provided, comprising modules or units for performing the methods in any possible design of the second aspect described above.

[0028] Fifthly, a communication device is provided, including a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to cause the communication device to perform any of the possible designs in the first aspect described above. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a transceiver and / or an antenna. Optionally, the communication device can be a network device or a chip configured in a network device.

[0029] A sixth aspect provides a communication device including a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to cause the communication device to perform the methods in any possible design of the second aspect described above. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a transceiver and / or an antenna. Optionally, the communication device can be a terminal device or a chip configured in a terminal device.

[0030] In a seventh aspect, a network device is provided that can implement the method in any of the possible designs of the first aspect described above. Optionally, the network device may be a chip (such as a baseband chip or a communication chip) or a base station device, and the above methods can be implemented by software, hardware, or by hardware executing corresponding software.

[0031] In one possible design, the network device includes a processor and a memory. The processor is used to support the network device in performing the methods in any of the possible designs of the first aspect described above; the memory is used to store instructions and / or data. Optionally, the network device further includes a radio frequency unit and an antenna.

[0032] In another possible design, the network device includes a baseband unit and a transceiver unit. The baseband unit is used to perform actions implemented internally by the network device in any of the possible designs of the first aspect described above; the transceiver unit is used to perform actions of the network device sending to or receiving from the outside.

[0033] In another possible design, the network device includes a processor and a transceiver. The processor is used to support the network device in performing the methods in any of the possible designs of the first aspect described above. When the network device is a chip, the transceiver may be an input / output unit, such as an input / output circuit or an input / output interface.

[0034] In yet another possible design, the network device may include a unit module that performs the corresponding actions in any of the possible designs of the first aspect described above.

[0035] Eighthly, a terminal device is provided that can implement the method in any of the possible designs in the second aspect above. Optionally, the terminal device may be a chip (such as a communication chip) or a user equipment, and the above method can be implemented by software, hardware, or by hardware executing corresponding software.

[0036] In one possible design, the terminal device includes a processor and a memory; the processor is configured to support the terminal device in performing the corresponding functions in any of the possible designs of the second aspect described above; the memory is used to store instructions and / or data. Optionally, the terminal also includes radio frequency circuitry and an antenna.

[0037] In another possible design, the terminal device includes a processing unit and a transceiver unit. The processing unit includes a processor and a memory for performing actions implemented internally by the terminal device in any of the possible designs of the second aspect described above; the transceiver unit includes radio frequency circuitry and an antenna for performing actions of transmitting to or receiving from the outside by the terminal device.

[0038] In another possible design, the terminal device includes a processor and a transceiver. The processor is used to support the terminal device in performing the methods in any of the possible designs of the second aspect described above. When the terminal device is a chip, the transceiver can be an input / output unit, such as an input / output circuit or an input / output interface.

[0039] In yet another possible design, the terminal device may include a unit module that performs the corresponding action in any of the possible designs of the second aspect described above.

[0040] In a ninth aspect, a computer-readable storage medium is provided that stores a computer program or instructions which, when executed, implement the method in any possible design of the first aspect described above.

[0041] In a tenth aspect, a computer-readable storage medium is provided that stores a computer program or instructions which, when executed, implement the method in any possible design of the second aspect described above.

[0042] Eleventhly, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is used to receive signals through the input circuit and to transmit signals through the output circuit, causing the processor to execute any of the methods described above or any possible design within that aspect. Optionally, the processor is a chip, the input circuit consists of input pins, the output circuit consists of output pins, and the processing circuit consists of transistors, gate circuits, flip-flops, and / or various logic circuits, etc.

[0043] In a twelfth aspect, a computer program product is provided, comprising: a computer program (also referred to as code or instructions) that, when run, causes a computer to perform any of the possible designs in the first aspect described above.

[0044] In a thirteenth aspect, a computer program product is provided, comprising: a computer program (also referred to as code or instructions) that, when run, causes a computer to perform any of the possible designs in the second aspect described above. Attached Figure Description

[0045] Figure 1 An example of a communication system architecture provided in this application embodiment;

[0046] Figure 2 An example of a communication device structure provided in this application embodiment;

[0047] Figure 3 Another example of a communication device structure provided in the embodiments of this application;

[0048] Figure 4 An example of a circuit system structure provided in this application embodiment;

[0049] Figure 5 This application provides an example of a communication method flow.

[0050] Figure 6 An example of a time-domain resource for a sensing signal provided in an embodiment of this application;

[0051] Figure 7 An example of time-domain resource allocation information provided in an embodiment of this application;

[0052] Figure 8This application provides another example of time-domain resource allocation information in its embodiments.

[0053] Figure 9 This is another example of time-domain resource allocation information provided in the embodiments of this application. Detailed Implementation

[0054] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0055] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and drawings of this application are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or apparatuses.

[0056] The terms "first" and "second," etc., used in the specification, claims, and drawings of this application are only used to distinguish different objects and not to describe a specific order. In the various embodiments of this application, the sequence number of each process does not imply the order of execution; the execution order of each process should be determined by its function and internal logic. The various numerical designations or sequence numbers involved in each process are merely for descriptive convenience and should not constitute any limitation on the implementation process of the embodiments of this application.

[0057] In this application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three or more, and "and / or" is used to describe the relationship between related objects, indicating that there can be three relationships. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items. For example, at least one (item) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c".

[0058] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be implemented alone or in reasonable combinations with other embodiments, and that the explanations or descriptions of various terms appearing in the embodiments can be referenced or interpreted in conjunction with each other in the various embodiments without limitation.

[0059] The communication methods and apparatus provided in this application can be applied to various communication systems, especially harmonized communication and sensing (HCS) systems. These systems include, but are not limited to: Long Term Evolution (LTE) systems, 5th Generation (5G) systems, New Radio (NR) systems, Wireless-Fidelity (WiFi) systems, other wireless communication systems related to the 3rd Generation Partnership Project (3GPP), or future wireless communication systems.

[0060] An integrated communication and sensing system combines communication and sensing functions. The advantages of this integration include: shared hardware for communication and radar sensing functions, saving hardware costs; easy deployment as sensing functions can be deployed directly at existing sites; and convenient collaborative networking, utilizing sensing results to assist communication and improve communication quality. For example, when the sensed target and the communication terminal are the same, beam measurement during communication can be reduced based on the sensing results. Conversely, when the sensed target and the communication terminal are different, if the sensed target obstructs the communication terminal, the base station can adjust the beam in time to ensure normal communication with the terminal.

[0061] The communication system and communication device provided in the embodiments of this application will now be described.

[0062] Figure 1 A communication system is illustrated; specifically, this communication system is an integrated communication and sensing system. For example... Figure 1 As shown, the system 100 includes at least one network device, such as Figure 1 The network device 110 shown; the system 100 may also include at least one terminal device, such as Figure 1 The terminal device 120 shown; the system 100 may also include at least one sensed target, such as Figure 1 The perceived target 130 is shown. It is understood that network devices and terminal devices can also be referred to as communication devices or communication apparatuses. Network device 110 is a network-side device with wireless transceiver capabilities. For example, this network device can be a base station, an evolved NodeB (eNodeB), a next-generation NodeB (gNB) in a 5G mobile communication system, a transmission reception point (TRP), a 3GPP subsequent evolution base station, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, etc. The network device can contain one or more co-located or non-co-located transmission reception points. Furthermore, the network device can include a central unit (CU), a distributed unit (DU), or both CU and DU. Thus, some functions of the wireless access network device can be implemented through multiple network functional entities. These network functional entities can be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform). For example, in vehicle-to-everything (V2X) technology, network devices can be roadside units (RSUs). Multiple network devices in the communication system can be the same type of base station or different types of base stations. Network device 110 can communicate directly with terminal devices via an air interface, or it can communicate with terminal device 120 via a relay station or other terminal devices. Network device 110 can also have sensing capabilities. For instance, after sending a sensing signal, network device 110 will receive an echo signal from the sensed target 130. The electromagnetic feedback signal generated by the sensing signal or electromagnetic wave after transmission, scattering, and reflection by the sensed target is the echo signal.

[0063] The network device 110 can obtain the sensing result of the perceived target based on the sensing signal and the echo signal of the sensing signal. The sensing result may include, for example, the distance, angle, position, moving speed, or external dimensions of the perceived target relative to the network device. In this way, the network device 110 can further utilize the sensing result to assist communication and improve the quality of communication. It should be noted that the sensing function and the communication function can be implemented by the same network device or by multiple network devices cooperating with each other; this application embodiment does not limit this.

[0064] In this application embodiment, the communication device used to implement the network device function can be a network device or an access network device, or a network device or access network device with base station partial functions, or a device that can support the network device or access network device to implement the function, such as a chip system, which can be installed in the network device or access network device.

[0065] Terminal device 120 is a user-side device with wireless transceiver capabilities. It can be a fixed device, mobile device, handheld device (e.g., mobile phone), wearable device, in-vehicle device, or a wireless device (e.g., communication module, modem, or chip system) built into the above devices. Terminal devices are used to connect people, things, and machines, and can be widely used in various scenarios, such as: cellular communication, device-to-device (D2D) communication, V2X communication, machine-to-machine / machine-type communications (M2M / MTC) communication, Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical care, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, drones, robots, and other scenarios. For example, a terminal device can be a handheld terminal in cellular communication, a communication device in D2D, an IoT device in MTC, a surveillance camera in intelligent transportation and smart cities, or a communication device on a drone, etc. Terminal devices are sometimes referred to as user equipment (UE), user terminal, user device, user unit, user station, terminal, access terminal, remote station, mobile device, or wireless communication device, etc.

[0066] In this embodiment of the application, the communication device used to implement the terminal device function can be a terminal device, a terminal device with terminal partial functions, or a device that can support the terminal device to implement the function, such as a chip system, which can be installed in the terminal device.

[0067] The perceived target 130 refers to various tangible objects on the ground that can be sensed, such as mountains, forests, or buildings, and may also include mobile objects such as vehicles, drones, pedestrians, and terminal devices. The perceived target is a target that can be sensed by network devices with sensing capabilities, and this target can feed back electromagnetic waves to the network devices. The perceived target may also be called a detected target, a sensed object, a sensed device, etc., and this application embodiment does not limit the terminology.

[0068] In this embodiment, the terminal device or network device includes a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux, Unix, Android, iOS, or Windows. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Furthermore, this embodiment does not specifically limit the structure of the execution entity of the method provided in this embodiment, as long as it can communicate according to the method provided in this embodiment by running a program that records the code of the method provided in this embodiment. For example, the execution entity of the method provided in this embodiment can be a terminal device or a network device, or a functional unit within the terminal device or network device capable of calling and executing a program.

[0069] Furthermore, various aspects or features of this application may be embodied as methods, apparatus, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used herein encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). Additionally, the various storage media described herein may represent one or more devices and / or other machine (such as a computer) readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0070] Figure 2 A schematic diagram of the structure of a communication device 1000 provided in an embodiment of this application is given. Figure 2 As shown, the communication device 1000 may include a processing unit 1100 and a transceiver unit 1200.

[0071] The communication device 1000 can be used as a network device 110 or as a device applied in the network device 110. Alternatively, the communication device 1000 can be used as a terminal device 120 or as a device applied in the terminal device 120.

[0072] Processing unit 1100 can process received signals or information, or process signals or information before sending them. When processing unit 1100 is part of network device 110, it can process downlink data corresponding to the sensing signal so that transceiver unit 1200 can send the processed sensing signal (downlink data). Alternatively, it can further process information that has undergone baseband processing. For example, if the information received by transceiver unit 1200 is an echo signal from a sensed target, processing unit 1100 of network device 110 can obtain information such as the position and movement speed of the sensed target based on the echo signal. If the information received by transceiver unit 1200 is feedback information from a terminal device regarding downlink data, processing unit 1100 of network device 110 can determine whether to retransmit the downlink data based on the feedback information. When processing unit 1100 is part of terminal device 120, it can perform baseband processing on signals or information received by transceiver unit 1200. For example, after receiving downlink data from transceiver unit 1200, processing unit 1100 performs subsequent processing on the downlink data.

[0073] The transceiver unit 1200 can receive and / or transmit signals. For example, when the transceiver unit 1200 is part of network device 110, it can send signals or information to terminal device 120, which may include DCI, PDSCH, etc., or send sensing signals to the sensed target 130. Correspondingly, when the transceiver unit 1200 is part of terminal device 120, it can receive the aforementioned signals or information from network device 110. As another example, when the transceiver unit 1200 is part of network device 110, it can receive signals or information from terminal device 120, which may include measurement reports, uplink data, uplink reference signals, downlink data reception status information, etc. Correspondingly, when the transceiver unit 1200 is part of terminal device 120, it can send the aforementioned signals or information to network device 110.

[0074] The communication device 1000 may further include a communication unit 1300. This communication unit 1300 can receive and / or transmit signals or information with other network devices. For example, when the communication unit 1300 belongs to network device 110, when the communication unit 1300 can communicate with other network devices (… Figure 1 (Not shown in the image). For example, if the network device 110 is a base station, CU, or DU, and other network devices are also base stations, CUs, or DUs, then the communication unit 1300 can communicate with other base stations, CUs, or DUs (receive and / or transmit signals or information). As another example, if the network device 110 is a base station, CU, or DU, and other network devices are the core network, then the communication unit 1300 can communicate with the core network (receive and / or transmit signals or information).

[0075] Figure 3 This is a schematic block diagram of another communication device 2000 provided in an embodiment of this application. Figure 3 As shown, the communication device 2000 may include one or more processors 2100. Figure 3 (Only one processor is shown in the image), and it may also include a transceiver 2200.

[0076] The communication device 2000 can be used as a network device 110 or as a device applied in the network device 110. Alternatively, the communication device 2000 can be used as a terminal device 120 or as a device applied in the terminal device 120.

[0077] Specifically, the functions of the processing unit 1100 in the communication device 1000 can be implemented by one or more processors 2100. The functions of the transceiver unit 1200 in the communication device 1000 can be implemented by a transceiver 2200. The transceiver 2200 is used to communicate with other devices / appliances via a transmission medium.

[0078] exist Figure 3 In various implementations of the communication device 2000 shown, the transceiver 2200 may include a receiver and a transmitter, the receiver being used to perform the function (or operation) of receiving, and the transmitter being used to perform the function (or operation) of transmitting.

[0079] The communication device 2000 may also include one or more memories 2300 for storing program instructions and / or data. The memories 2300 and the processor 2100 are coupled. The coupling in this embodiment is an indirect coupling or communication connection between devices or units, which may be electrical, mechanical, or other forms, for information exchange between devices or units. The processor 2100 may operate in conjunction with the memories 2300. The processor 2100 may execute program instructions stored in the memories 2300. Optionally, at least one of the aforementioned memories may be included in the processor.

[0080] The specific connection medium between the processor 2100, transceiver 2200, and memory 2300 described above is not limited in the embodiments of this application. Figure 3 In the given example, the processor 2100, transceiver 2200, and memory 2300 are connected via bus 2400, which is represented by thick lines. The connections between other components are for illustrative purposes only and are not intended to be limiting. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, Figure 3 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0081] Understandable, Figure 3 When the communication device shown is a network device, the network device may also have more than Figure 3 More units or devices, etc. It is also understandable that, in... Figure 3 When the communication device shown is a terminal device, the terminal device may also have more than Figure 3 More components, etc. This application does not limit this to the embodiments.

[0082] Understandable, Figure 3 When the communication device shown is a network device, the aforementioned units or devices may be located in the same physical entity or in different physical entities. This application does not limit this.

[0083] Figure 4 This is a schematic block diagram of a circuit system 3000 provided in an embodiment of this application. Figure 4 As shown, the network device may include processing circuitry 3100 and interface circuitry 3200.

[0084] The circuit system 3000 can be used as a network device 110 or a device applied within the network device 110. Alternatively, the circuit system 3000 can be used as a terminal device 120 or a device applied within the terminal device 120. In this case, the processing unit 1100 can be implemented using the processing circuit 3100, and the transceiver unit 1200 can be implemented using the interface circuit 3200. The processing circuit 3100 can be a chip, logic circuit, integrated circuit, or system-on-chip (SoC) chip, etc., and the interface circuit 3200 can be a communication interface, input / output interface, etc.

[0085] In the embodiments of this application, the processor 2100 or processing circuit 3100 may be a general-purpose processor, digital signal processor, application-specific integrated circuit, field-programmable gate array or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc., and can implement or execute the various methods, steps and logic block diagrams provided in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods provided in the embodiments of this application can be directly reflected as being executed by a hardware processor, or being executed by a combination of hardware and software modules in the processor, etc.

[0086] The method provided in the embodiments of this application will now be described in conjunction with the above-described communication device and system.

[0087] Before introducing the methods of the embodiments of this application, let's first introduce some technical terms related to the embodiments of this application.

[0088] I. Sensing Signal: This refers to a signal used to sense or detect a target, or in other words, a signal used to sense or detect environmental information. For example, a sensing signal is an electromagnetic wave sent by a network device to sense environmental information. Sensing signals can also be called radar signals, radar sensing signals, detection signals, radar detection signals, environmental sensing signals, etc., and are not limited to these terms in the embodiments of this application.

[0089] II. Echo signal: The electromagnetic feedback signal generated by electromagnetic waves being transmitted, scattered, and reflected by the sensed target.

[0090] III. The perceived target: This can include various tangible objects on the ground that can be sensed, such as mountains, forests, or buildings, and can also include mobile objects such as vehicles, drones, pedestrians, and terminal devices. The perceived target is a target that can be sensed by a network device with sensing capabilities, and this target can feed back electromagnetic waves to the network device. The perceived target can also be called a detected target, a sensed object, a sensed device, etc., and this application embodiment does not limit this terminology.

[0091] IV. Resources: refers to wireless resources, including time-domain resources, frequency-domain resources, or code-domain resources.

[0092] V. Resource element (RE): The smallest unit of resource. A resource element consists of a time-domain symbol (hereinafter referred to as a symbol in this application embodiment) and a subcarrier in the frequency domain. It can be uniquely identified by an index pair (k, l), where k is the subcarrier index and l is the symbol index.

[0093] VI. Time-domain symbol: also known as a symbol, the time-domain symbol can be an orthogonal frequency division multiplexing (OFDM) symbol or a symbol under other multiple access methods. This application does not limit this. The length of the time-domain symbol can be different for different subcarrier spacings.

[0094] VII. Time Slot: A slot consists of N symbols, where N is a positive integer. For example, in an NR system, N can be 14 for a normal cyclic prefix (NCP) and 12 for an extended cyclic prefix (ECP). When the scheme of this application embodiment is applied to other systems, N can also be other values. The length of a slot can vary for different subcarrier intervals. For example, when the subcarrier interval is 15kHz and the CP is NCP, a slot is 1ms and consists of 14 symbols. This application embodiment does not limit the value of the subcarrier interval.

[0095] 8. Physical Channel: Carries signals or information. For example, a physical channel can be a physical downlink shared channel (PDSCH), physical downlink control channel (PDCCH), physical broadcast channel (PBCH), physical sidelink shared channel (PSSCH), physical sidelink control channel (PSCCH), physical sidelink broadcast channel (PSBCH), physical sidelink feedback channel (PSFCH), physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), etc. New physical channel names may be introduced for subsequent network evolution; this application does not impose limitations on these names.

[0096] 9. Reference Signal (RS): Reference signals can be used for physical channel demodulation, channel measurement, interference measurement, or synchronization tracking. Reference signals can be demodulation reference signals (DMRS), channel state information reference signals (CSI-RS), sounding reference signals (SRS), phase-tracking reference signals (PT-RS), primary synchronization signals (PSS), or secondary synchronization signals (SSS). DMRS is used to demodulate the physical channel; for example, network devices or terminal devices perform channel estimation based on DMRS and then demodulate the physical channel based on the estimated channel values. CSI-RS is used to obtain channel state information; for example, network devices send CSI-RS to terminal devices, the terminal devices obtain channel state information (CSI) based on the CSI-RS measurements, and feed the CSI back to the network devices. The network devices then schedule the terminal devices based on this CSI. Of course, reference signals can also be other types of reference signals or reference signals with other functions.

[0097] In integrated communication and sensing systems, in order to improve sensing performance and reduce the overhead of sensing signals, sensing signals are usually transmitted discontinuously in the time domain. Figure 6 An example of the distribution of the sensing signal within a slot is given. Figure 6 In the diagram, the sensing signal occupies symbols 6 and 13. Other symbols can be used by the network device to transmit data, control information, reference signals, etc., to one or more terminal devices. It is understood that the distribution of the sensing signal within a slot can also be on other symbols, such as symbols 5 and 14, symbols 3, 4, 9, 10, symbols 3, 6, 13, etc. This application does not specifically limit the symbols occupied by the sensing signal within a slot in its embodiments.

[0098] By transmitting sensing signals using discontinuous time-domain resources, network devices can detect sensed targets with relatively low system overhead. For example, the network device can estimate the Doppler frequency offset of the sensed target, and thus estimate its moving speed. Furthermore, to fully utilize the resources occupied by the sensing signals, these signals can be downlink data sent by the network device to one or more terminal devices, and may also include a reference signal for demodulating the downlink data. For example, the sensing signal can be a PDSCH of one or more terminal devices, and a DMRS for demodulating the PDSCH. When the downlink data is unicast data, the sensing signal can be a PDSCH sent to a single terminal device; when the downlink data is multicast data, the sensing signal can be a PDSCH sent to a group of terminal devices. Typically, this group of terminal devices can include multiple terminal devices, all of which receive the information carried on the PDSCH.

[0099] When a network device sends downlink data to one or more terminal devices, it can send downlink control information (DCI) via the PDCCH. The DCI carries time-frequency domain resource information used for transmitting downlink data, i.e., the time-frequency domain resource information for transmitting the PDSCH. Typically, the PDSCH resides within a slot in the time domain, occupying one or more symbols. Correspondingly, the time-domain resource allocation information carried in the DCI can include the index S of the starting symbol for transmitting the PDSCH within that slot and the number of consecutive symbols L. Specifically, S represents the index of the first symbol of the transmitted PDSCH within the current slot. As mentioned earlier, for NCP, a slot has 14 symbols, and the index value can range from 0 to 13. For ECP, a slot has 12 symbols, and the index value can range from 0 to 12. L represents the L consecutive symbols starting from the index of the starting symbol. Understandably, there are certain constraints on the values ​​of S and L; for example, in NCP, S + L is less than or equal to 14.

[0100] In one implementation, multiple combinations of S and L can be specified in the protocol, each combination forming a time-domain resource allocation information. The network device sends one of these combinations to the terminal device via DCI. Table 1 below shows a possible combination of S and L included in the time-domain resource allocation information in the DCI during NCP. As shown in Table 1, when the row index carried in the DCI is 1, the corresponding S=2, L=12; when the row index carried in the DCI is 2, the corresponding S=3, L=11, and so on, without further details.

[0101] Table 1

[0102]

[0103] In another implementation, possible combinations of S and L can be configured semi-statically via signaling. For example, radio resource control (RRC) signaling can be used to notify one or more combinations of S and L. A combination of S and L is called a start and length indicator (SLIV), meaning that one SLIV value corresponds to one S and L. The network device then sends one of the SLIVs to the terminal device via DCI, and the terminal device obtains the S and L through the mapping between SLIV and S and L.

[0104] Specifically, for NCP, SLIV can have the following relationship with S and L:

[0105] When L-1≤7, SLIV=14*(L-1)+S; otherwise, SLIV=14*(14-L+1)+(14-1S).

[0106] Meanwhile, the combination of values ​​for S and L should also satisfy certain constraints. For example, for NCP, S+L≤14, and for ECP, S+L≤12.

[0107] For example, if SLIV = 20, then S = 6 and L = 2. Understandably, although S = 6 and L = 14 also satisfy the above correspondence between SLIV and S, L, since S + L is greater than 14, it is not a valid value.

[0108] The network devices described above, through the combination of S and L, can only notify time-domain resources that are continuous in the time domain. However, the sensing signals sent by the network devices are discontinuous in the time domain (e.g., ...). Figure 2 (As shown). Therefore, the combination of S and L mentioned above will affect the resource utilization of the communication-sensing integrated system. For example, to notify multiple non-contiguous time-domain resources, multiple DCIs may be required, thereby increasing signaling overhead and affecting resource utilization.

[0109] Figure 5This is a schematic flowchart illustrating a communication method provided in an embodiment of this application. In this embodiment, a network device indicates discontinuous sub-time domain resources through indication information for transmitting a PDSCH. The PDSCH, or the signal carried by the PDSCH, can be used as a sensing signal to sense a target device. This method can improve the resource utilization of the integrated communication and sensing system. Specifically, by designing a new DCI to notify the aforementioned discontinuous sub-time domain resources, the overhead of using the DCI can be reduced, improving the utilization of control channel resources. Furthermore, using the signal carried by the PDSCH as a sensing signal improves the utilization of data channel resources. Even further, transmitting sensing signals through discontinuous time domain resources reduces the time domain resources occupied by sensing signals, improving resource utilization. In addition, this newly designed DCI allows for more flexible allocation of time domain resources.

[0110] In the methods described below, the perceived target 130 and the terminal device 120 may be the same or different. The embodiments described in this application are not intended to be limiting.

[0111] In the following method, the steps of the network device can be implemented by different functional entities that make up the network device; in other words, the functional entities that perform the steps of the network device can be located in different physical entities. For example, the actions of transmitting or receiving by the network device can be located in the radio frequency (RF) unit, the radio remote unit (RRU), or the active antenna unit (AAU) of the network device. The actions of processing by the network device can be located in the central unit (CU) of the network device, etc. This application does not impose any limitations on this.

[0112] Specifically, the method may include the following steps.

[0113] S101, network device 110 sends instruction information to terminal device 120, and the corresponding terminal device 120 receives instruction information from network device 110.

[0114] Specifically, the indication information may include time-domain resource allocation information. This time-domain resource allocation information indicates the first time-domain resource.

[0115] It is understood that, in various embodiments of this application, the indication information can be carried in the physical layer signaling downlink control information (DCI) to enable more dynamic and flexible notification of the first time domain resources, or it can be carried in the higher layer signaling to enable more reliable notification of the first time domain resources, which is suitable for scenarios where the first time domain resources change relatively slowly.

[0116] Alternatively, the indication information can also be transmitted through a combination of physical layer signaling and higher-layer signaling. For example, network device 110 configures multiple candidate time-domain resources through higher-layer signaling. These multiple candidate time-domain resources include a first time-domain resource. At least one of the multiple candidate time-domain resources can contain at least two sub-time-domain resources, and each candidate time-domain resource corresponds to an index. Then, the network device notifies the actual time-domain resource to be used, such as the first time-domain resource, through physical layer signaling. Specifically, the index corresponding to the first time-domain resource can be carried in the DCI to indicate the first time-domain resource. This can increase the reliability of signaling transmission, reduce signaling overhead, and provide a certain degree of flexibility. The higher-layer signaling can be an RRC message or a media access control (MAC) control element (CE). The RRC message can include a dedicated RRC message or a broadcast / multicast RRC message; this embodiment of the application is not limited to these.

[0117] Alternatively, this indication information can be represented by a combination of at least two of the following: physical layer signaling, higher-layer signaling, and protocol-fixed information. For example, some information in the indication information may be carried in physical layer signaling, while other information may be carried in higher-layer signaling; or some information may be carried in physical layer signaling, while other information may be fixed in the protocol; or some information may be carried in physical layer signaling, other information may be carried in higher-layer signaling, and the remaining information may be fixed in the protocol. For an explanation of higher-layer and physical layer signaling, please refer to the above text, which will not be repeated here. The following section will detail the specific content included in the indication information.

[0118] Specifically, the first time-domain resource can be located within a single time slot. In the embodiments of this application, this single time slot is referred to as the first time slot. For an introduction to time slots, please refer to the above text, which will not be repeated here. The first time-domain resource consists of M sub-time-domain resources. At least two adjacent sub-time-domain resources are separated by a first time interval, where M is an integer greater than or equal to 2. It can be understood that in the embodiments of this application, two adjacent sub-time-domain resources refer to those that are adjacent in the time domain, and there are no other sub-time-domain resources between the two adjacent sub-time-domain resources. For example, assuming M = 3, and the M sub-time-domain resources occupy symbol 3 (first sub-time-domain resource), symbol 6 (second sub-time-domain resource), and symbol 13 (third sub-time-domain resource) in the first time slot, then the first and second sub-time-domain resources are adjacent sub-time-domain resources, and the second and third sub-time-domain resources are adjacent sub-time-domain resources. However, the first and third sub-time-domain resources are not adjacent sub-time-domain resources (there is a second sub-time-domain resource in between).

[0119] Figure 6 An example of the first time slot is shown, such as Figure 6 As shown, the first time slot contains N = 14 symbols (corresponding indices 0 to 13), and the first time domain resource consists of one sub-time domain resource on symbol 6 and one sub-time domain resource on symbol 13, i.e., M = 2. It is understood that a time unit can be a single symbol (such as an OFDM symbol), or it can be X symbols, or a duration such as 0.07 milliseconds (ms). This application embodiment does not impose such limitations. It is understood that the first time slot can contain other numbers of symbols, such as 12 symbols, and this application embodiment does not impose such limitations. It is understandable that the distribution of the first time domain resource within the first time slot can be on other symbols, such as symbol 5 (first sub-time domain resource) and symbol 14 (second sub-time domain resource), such as symbols 3 and 4 (first sub-time domain resource), 9 and 10 (second sub-time domain resource), such as symbols 3 (first sub-time domain resource), 6 (second sub-time domain resource), 13 (third sub-time domain resource), etc. The embodiments of this application do not specifically limit the distribution of the first time domain resource within the first time slot.

[0120] It is understood that at least two adjacent sub-time domain resources in the M sub-time domain resources are separated by a first time period. The first time period may contain one or more time units. For example, when the time unit is a symbol, the first time period may be a symbol (such as an OFDM symbol), or X symbols, or a duration, such as 0.07 milliseconds (ms), or one or more mini-time slots, or one or more time slots, etc. The embodiments of this application do not impose any limitations on this.

[0121] In the following description, time units are used as the symbol for example.

[0122] Alternatively, the first time-domain resource can be located in different time slots. For example, if M=4, the first two sub-time-domain resources included in the first time-domain resource are located at symbols 6 (first sub-time-domain resource) and 13 (second sub-time-domain resource) in time slot N, and the last two sub-time-domain resources are located at symbols 4 (third sub-time-domain resource) and 11 (fourth sub-time-domain resource) in time slot N+1, etc. This application does not limit the location of the first time-domain resource in its embodiments.

[0123] Understandably, this step is optional for both network device 110 and the sensed target 130. This step is also optional for both network device 110 and terminal device 120 if the protocol specifies a distribution information of a first time-domain resource; that is, both network device 110 and terminal device 120 perform downlink data transmission according to the distribution information of the first time-domain resource specified in the protocol.

[0124] In step S101, the actions performed by the network device 110 can be executed by the processing unit 1100, processor 2100, or processing circuit 3100 of the aforementioned communication device (as a network device) through the transceiver unit 1200, transceiver 2200, or interface circuit 3200 of the aforementioned communication device (as a network device). Correspondingly, the actions performed by the terminal device 120 can be executed by the processing unit 1100, processor 2100, or processing circuit 3100 of the terminal device through the transceiver unit 1200, transceiver 2200, or interface circuit 3200 of the aforementioned communication device (as a network device).

[0125] S102, network device 110 sends Physical Downlink Shared Channel (PDSCH) to terminal device 120 on the first time domain resource.

[0126] The PDSCH or some or all of the signals carried by the PDSCH can be used as sensing signals. In other words, the sensing signal is the Physical Downlink Shared Channel (PDSCH) carried on the first time domain resource, or the sensing signal is some or all of the signals carried by the PDSCH, or the signals on the time-frequency resources occupied by the PDSCH can be used as sensing signals, or the signals on the time-frequency resources occupied by the PDSCH together with the pilot signals associated with the PDSCH can be used as sensing signals. The pilot signals associated with the PDSCH can be DMRS for demodulating the PDSCH, or phase tracking reference signals (PTRS) for phase tracking.

[0127] It should be noted that, Figure 5 The two S102s shown do not mean that the network device 110 needs to execute S102 twice to send the sensing signal and downlink data respectively. Rather, it means that the S102 executed by the network device 110 can be downlink data for the terminal device 120 and sensing signal for the sensed target 130.

[0128] Accordingly, the terminal device 120 receives PDSCH (downlink data) on the first time domain resource according to the instruction information.

[0129] As can be understood, in the embodiments of this application, the PDSCH transmitted in the first time-domain resource is used to transmit the same redundant version (RV) of a transport block (TB). That is, the TB block is transmitted jointly by M sub-time-domain resources, rather than each sub-time-domain resource transmitting the TB block or multiple RVs of the TB separately.

[0130] It is understood that the downlink data can be downlink data (PDSCH) sent by a network device to one or more terminal devices, and this application embodiment does not impose any limitations. For example, the downlink data can be multicast / broadcast data, specifically, multicast / broadcast data can be video, dynamic layers, or road safety information, etc.

[0131] In step S102, the actions performed by the network device 110 can be executed by the processing unit 1100, processor 2100, or processing circuit 3100 of the aforementioned communication device (as a network device) through the transceiver unit 1200, transceiver 2200, or interface circuit 3200 of the aforementioned communication device (as a network device). Correspondingly, the actions performed by the terminal device 120 can be executed by the processing unit 1100, processor 2100, or processing circuit 3100 of the terminal device through the transceiver unit 1200, transceiver 2200, or interface circuit 3200 of the aforementioned communication device (as a network device).

[0132] S103, Network device 110 receives all or part of the echo signal of PDSCH.

[0133] In this embodiment of the application, the perceived target 130 is referred to as the first target.

[0134] Specifically, network device 110 receives the echo signal of all or part of the signal carried by the PDSCH, that is, the network device receives the echo signal of the sensed target 130 in response to the sensed signal, and this echo signal is used to sense the sensed target 130. In other words, the sensed signal generates an electromagnetic feedback signal, i.e., an echo signal, after being transmitted, scattered, and reflected by the sensed target 130. The sensed target 130 can be one or more, and this application embodiment does not impose any limitations.

[0135] In step S103, the actions performed by the network device 110 can be executed by the processing unit 1100, processor 2100 or processing circuit 3100 of the aforementioned communication device (as a network device) through the transceiver unit 1200, transceiver 2200 or interface circuit 3200 of the aforementioned communication device (as a network device).

[0136] S104, Network device 110 senses the first target (the sensed target 130).

[0137] Specifically, network device 110 senses the first target based on all or part of the echo signal received from the PDSCH.

[0138] For example, network device 110 obtains the sensing results of the first target based on the sensing signal and the echo signal of the sensing signal. This includes, for example, the distance, angle, position, moving speed, or dimensions of the first target relative to the network device. In this way, network device 110 can further utilize the sensing results to assist communication and improve communication quality.

[0139] In this embodiment, the network device 110 employs a self-transmitting and self-receiving mechanism. After sending a sensing signal, it receives the echo signal of the sensing signal and processes it. For example, if the network device sends a sensing signal at time t and receives the echo signal at time t+k, the distance to the sensed target can be estimated to be approximately: ((t+k)-t)*c / 2, where c is the speed of light.

[0140] In step S104, the actions performed by the network device 110 can be executed by the processing unit 1100, processor 2100, or processing circuit 3100 of the aforementioned communication device (as a network device).

[0141] Step S104 is optional.

[0142] It should be noted that the order between S101 and S102 can be either S101 first or S102 first, and this application embodiment does not impose any restrictions.

[0143] In this embodiment, by designing a new DCI to notify the aforementioned discontinuous time-domain resources, the overhead of using the DCI can be reduced, and resource utilization can be improved. Furthermore, using the signal carried by the PDSCH as a sensing signal further improves resource utilization. Even further, by sending sensing signals through discontinuous time-domain resources, the time-domain resources occupied by the sensing signals can be reduced, further improving resource utilization. In addition, this newly designed DCI allows for more flexible allocation of time-domain resources.

[0144] The following embodiments illustrate specific implementations of the instruction information based on the above embodiments. Unless otherwise specified, the same terms and descriptions used in the following embodiments and those in the above embodiments may be referred to each other to reduce repetition.

[0145] Figure 7 This illustrates one method for implementing indication information. This indication information can be included in downlink control information (DCI), such as... Figure 7 As shown, the DCI contains the start position information S of each of the M sub-time domain resources. i And the duration information L of each of the M sub-time domain resources. i ,i represents the i-th sub-temporal resource, where i is a positive integer and 1≤i≤M, and M is an integer greater than or equal to 2.

[0146] refer to Figure 7 If M=2, the indication information includes time-domain resource allocation information {S1, L1}, {S2, L2}. For example, when row index = 2, the corresponding {S1, L1} is {4, 2}, indicating that the first sub-time-domain resource starts at symbol 4 and lasts for 2 symbols. The corresponding {S2, L2} is {12, 2}, indicating that the second sub-time-domain resource starts at symbol 12 and lasts for 2 symbols. As another example, when row index = 3, the corresponding {S1, L1} is {6, 3}, indicating that the first sub-time-domain resource starts at symbol 6 and lasts for 3 symbols. The corresponding {S2, L2} is {13, 1}, indicating that the second sub-time-domain resource starts at symbol 13 and lasts for 1 symbol.

[0147] As is understood, in the embodiments of this application, the first sub-time domain resource refers to the earliest sub-time domain resource in the first time slot.

[0148] See again Figure 7 If M=3, the indication information includes time-domain resource allocation information {S1, L1}, {S2, L2}, {S3, L3}. For example, when the row index = n, the corresponding {S1, L1} is {6, 1}, indicating that the starting position of the first sub-time-domain resource is symbol 6 and the duration is 1 symbol. The corresponding {S2, L2} is {9, 1}, indicating that the starting position of the second sub-time-domain resource is symbol 9 and the duration is 1 symbol. The corresponding {S3, L3} is {13, 1}, indicating that the starting position of the third sub-time-domain resource is symbol 13 and the duration is 1 symbol. For example, when row index = n+1, the corresponding {S1, L1} is {5, 2}, indicating that the starting position of the first sub-time domain resource is symbol 5 and the duration is 2 symbols. The corresponding {S2, L2} is {8, 2}, indicating that the starting position of the second sub-time domain resource is symbol 8 and the duration is 2 symbols. The corresponding {S3, L3} is {12, 2}, indicating that the starting position of the third sub-time domain resource is symbol 12 and the duration is 2 symbols.

[0149] Figure 7 Only the cases of M=2 and M=3 are shown. It is understood that M can also be other values, and this application does not impose any restrictions.

[0150] In one implementation, the time-domain resource allocation information {S} corresponding to different M values i L i}, combinations of i∈[1,M] can be shared Figure 7 The temporal resource allocation table shown indicates that "i∈[1,M]" means that the value of i can range from 1 to M. In this case, the row index is uniformly encoded in the temporal resource allocation information corresponding to multiple M values; for example, M=2 and M=3 both use... Figure 7The table. Furthermore, M=1 can also be shared with M=2 and M=3. Figure 7 The table shown is as follows. Among them, such as... Figure 7 If S in the table shown i =0 indicates that the i-th sub-time domain resource does not exist, or that the i-th to M-th sub-time domain resources do not exist, or that the i-th sub-time domain resource is not indicated in the indication information, or that the i-th to M-th sub-time domain resources are not indicated in the indication information. For example, when row index = 1, S2 = 0, indicating that the 2nd sub-time domain resource does not exist, or that the 2nd to M-th sub-time domain resources do not exist. It can be understood that if S... i =0 can also be interpreted as the M value corresponding to the row index actually being i-1. For example Figure 7 In this context, a row index of 2 corresponds to S2 = 0, which can be understood as M = 1, etc. When the indication information is included in the DCI, the DCI can carry a row index indicating the first time-domain resource. Indication information using this method can uniformly process time-domain resources with different M values, simplifying the processing procedure.

[0151] In another implementation, the time-domain resource allocation information {S} corresponding to different M values i L i The combination of i ∈ [1, M] can correspond to different tables. For example, the time-domain resource allocation information corresponding to M=1 corresponds to the first table, the time-domain resource allocation information corresponding to M=2 corresponds to the second table, and the time-domain resource allocation information corresponding to M=3 corresponds to the third table, etc. In this case, the indication information can include the information of the table used and the row index in the corresponding table to indicate the start position information and duration information of the M sub-time-domain resources. Furthermore, the table information used can be indicated by higher-layer signaling, and the row index information in the corresponding table can be indicated by physical layer signaling. The specific signaling format can be found in the above description and will not be repeated here. This implementation method can reduce the overhead of physical layer signaling.

[0152] It can be replaced. Figure 7 The indicated information can be transmitted via higher-level signaling. For example, a time-domain resource allocation information {S} can be carried in an RRC message. i L i}, i∈[1,M] combinations, such as carrying time-domain resource allocation information as {S1, L1}, {S2, L2}, or carrying time-domain resource allocation information as {S1, L1}, {S2, L2}, {S3, L3}, or carrying multiple SLIVs, different SLIVs and different {S i L i} Association, such as SLIV1 being associated with {S1, L1}, SLIV2 being associated with {S2, L2}, the terminal can determine the corresponding {S1, L1} based on the SLIV association. iL i The specific instruction method is similar to that when the instruction information is DCI information, and will not be repeated here. Using higher-level signaling transmission can enhance the reliability of the instruction information.

[0153] It can be replaced. Figure 7 The aforementioned indication information can be represented by a combination of at least two of physical layer signaling, higher-layer signaling, and protocol fixes. For example, {S} can be transmitted in physical layer signaling. i}, fixed in high-level signaling or protocols {L i Alternatively, or vice versa. This scheme can further reduce DCI signaling overhead and enhance the reliability of indication information.

[0154] It is worth noting that in the same time-domain resource allocation information, different {S i L i The symbols corresponding to} can be in no particular order, but are usually different from {S i L i The} symbols correspond to different symbols and will not overlap. This ensures that fewer row indexes are used to set up the table, reducing signaling overhead.

[0155] use Figure 7 The implementation shown provides more comprehensive information and more flexible resource scheduling, meaning it can flexibly indicate the start position and length information of resources in different time domains.

[0156] Figure 8 Another implementation of the indication information is shown. This indication information can be included in higher-layer signaling such as RRC messages, or in physical layer information such as DCI. This indication information uses a bitmap to indicate the M sub-time-domain resources contained in the first time-domain resource. Specifically, Figure 8 This illustrates a time slot (e.g., the first time slot) containing N = 14 symbols, with corresponding indices from 0 to 13. The indication information can contain N = 14 bits, each corresponding to a symbol from 0 to 13. When a bit in the indication information is 1, it indicates that the symbol corresponding to that bit belongs to the first time domain resource and can be used to transmit sensing signals (downlink data). When a bit in the indication information is 0, it indicates that the symbol corresponding to that bit does not belong to the first time domain resource. That is, the M sub-time domain resources within the first time domain resource include symbols corresponding to bits with a value of 1, but do not include symbols corresponding to bits with a value of 0. It can be understood that when multiple consecutive bits are 1, the symbols corresponding to these consecutive bits can belong to the same sub-time domain resource; when non-consecutive bits are 1, the corresponding symbols belong to different sub-time domain resources. For example... Figure 8As shown, the value of each bit in the bitmap is 00000010000001, indicating that the first time-domain resource consists of two sub-time-domain resources (symbol 6 corresponds to the first sub-time-domain resource and symbol 13 corresponds to the second time-domain resource). For example, the value of each bit in the bitmap is 00000110000001 (…). Figure 8 (Not shown in the image), indicating that the first time-domain resource consists of two sub-time-domain resources (the first sub-time-domain resource corresponding to symbols 6 and 7 and the second time-domain resource corresponding to symbol 13). Using a bitmap approach allows for more flexible allocation of the first time-domain resource. Figure 7 The implementation shown offers more flexible resource scheduling. Specifically, the bitmap can flexibly indicate the start position and length information of different sub-time domain resources, thereby making more effective use of time domain resources and improving communication performance.

[0157] Figure 9 Another method of implementing the instruction information is shown. In this implementation, compared to... Figure 7 and Figure 8 The implementation shown can further reduce signaling overhead.

[0158] like Figure 9 As shown, the indication information can be included in physical layer information such as DCI. This indication information may include at least one of the following: the start position information S1 of the first sub-time domain resource among M sub-time domain resources, the duration information L1 of the first sub-time domain resource, and the offset O1. The start position information S1 of the i-th sub-time domain resource among the M sub-time domain resources... i A first association exists with at least one of S1, L1, and O1. Alternatively, the starting position information S of the i-th sub-time domain resource among the M sub-time domain resources can be... i Determined based on at least one of S1, L1, and O1.

[0159] In one implementation, S i The first association with S1 may include:

[0160] S i =n*S1, or S i = i*S1, where n is a positive integer, and L is the duration information of the i-th sub-temporal resource. i =L1, where i is an integer greater than or equal to 2 and less than or equal to M.

[0161] In another implementation, S i The first association with L1 may include: S i = n*L1+1, where n is a positive integer.

[0162] In another implementation, S iThe first association with O1 may include: S i = n*O1, where n is a positive integer.

[0163] In another implementation, S i The first association between S1 and O1 may include:

[0164] S i =S i-1 -1+O1, or, S i =S i-1 +O1, the duration information L of the i-th sub-time domain resource. i =L1,

[0165] Where i is an integer greater than or equal to 2 and less than or equal to M. Furthermore, O1 is greater than L1.

[0166] In another implementation, the first association may include:

[0167] S i =S i-1 +L1-1+O1, the duration information L of the i-th sub-time domain resource. i =L1, where i is an integer greater than or equal to 2 and less than or equal to M.

[0168] For example, for row index n, the indication information contains {S1, L1} as {6, 1}, O1 as 7, and assuming M = 2, then the first time-domain resource indicated by this indication information, in addition to the time-domain resource corresponding to symbol 6, also includes symbol 13 (S i =S i-1 +L1-1+O1=6+1-1+7). For example, for row index n+1, the indication information contains {S1, L1} as {5, 2}, O1 as 7, and assuming M=2, then the first time-domain resource indicated by this indication information, in addition to the time-domain resources corresponding to symbols 5 and 6, also includes symbols 12 and 13 (S... i =S i-1 The time-domain resources corresponding to (+L1-1+O1=5+2-1+6) are as follows. For example, for row index 1, the indication information contains {S1, L1} as {2, 2}, O1 as 2, and assuming M=3, then the first time-domain resources indicated by this indication information include not only the time-domain resources corresponding to symbols 2 and 3, but also the time-domain resources corresponding to symbols 5 and 6, and the time-domain resources corresponding to symbols 8 and 9.

[0169] and Figure 7 Similar to the description in the text, in one implementation, the time-domain resource allocation information {S1, L1, O1} corresponding to different M values ​​can be shared. Figure 9 The table shown contains, for example, Figure 9In the table shown, if O1 = 0, it indicates that the 2nd to Mth sub-time domain resources do not exist, or that the indication information does not specify the i-th to M-th sub-time domain resources. It can be understood that if O1 = 0, it can also be interpreted as the M value corresponding to that row index actually being 1. For example... Figure 9 In this context, row index 2 corresponds to O1=0, which can be understood as M=1, etc. For a related description, please refer to the text above. Figure 7 The corresponding description. This method of indication allows for unified processing of time-domain resources with different M values, simplifying the processing procedure.

[0170] In another implementation, different combinations of time-domain resource allocation information {S1, L1, O1} corresponding to different M values ​​can correspond to different tables. In this case, the indication information can include information about the table used and the row index in the corresponding table to indicate the start position and duration information of the M sub-time-domain resources. Furthermore, the table information used can be indicated by higher-layer signaling, and the row index information in the corresponding table can be indicated by physical layer signaling. The specific signaling format can be found above and will not be repeated here. This implementation can reduce the overhead of physical layer signaling.

[0171] Understandably, one or more of S1, L1, and O1 mentioned above can be included in higher-layer signaling or fixed in the protocol. For example, S1 and L1 can be included in the DCI, and O1 can be included in the RRC signaling; or, S1 can be included in the DCI, and L1 and O1 can be included in the RRC signaling; or, S1 can be included in the DCI, and L1 can be included in the RRC signaling, with O1 fixed in the protocol or O1 not present. This can further reduce the overhead of the DCI and improve the reliability of the transmission of the above information.

[0172] When O1 is fixed in the protocol or when O1 does not exist, there are several possible implementation methods.

[0173] In the first implementation, the starting position information of the i-th sub-temporal resource can be S i Satisfying the following S i =n*S i-1 , where n is an integer greater than 1. For example, if n = 3, M = 2, S1 = 2, L1 = 1, then the first sub-time domain resource is symbol 2, the second sub-time domain resource is symbol 6 (S2 = 3 * S1 = 6, L2 = L1 = 1), and so on. In this case, the signaling overhead can be further reduced.

[0174] In the second implementation, the starting position information S of the i-th sub-temporal resource i Satisfy S i =n*S i-1+L1, where n is an integer greater than 1. For example, if n = 3, M = 2, S1 = 2, and L1 = 1, then the first sub-time domain resource is symbol 2, the second sub-time domain resource is symbol 7 (S2 = 3*S1 + L1 = 7, L2 = L1 = 1), and so on. In this case, the signaling overhead can be further reduced.

[0175] In the third implementation, the starting position information S of the i-th sub-temporal resource i Satisfy S i = n * S1, where n is an integer greater than 1. For example, if n = 3, M = 2, S1 = 2, L1 = 1, then the first sub-time domain resource is symbol 2, the second sub-time domain resource is symbol 6 (S2 = 3 * S1 = 6, L2 = L1 = 1), and so on. For example, if n = 3, M = 3, then the first sub-time domain resource is symbol 2, the second sub-time domain resource is symbol 6 (S2 = 3 * S1 = 6, L2 = L1 = 1), and the third sub-time domain resource is symbol 9 (S3 = 3 * S1 = 9, L2 = L1 = 1), and so on. In this case, signaling overhead can be further reduced.

[0176] Furthermore, the indication information may also include an enable flag, which is also referred to as the first indication information in this embodiment. When the flag is 1 (first value), it is used to indicate the start position and duration of the M sub-time domain resources. For specific implementation details, please refer to the above. When the flag is 0 (second value), it is used to indicate only the start position and duration of the first sub-time domain resource. That is, at this time, the indication information does not indicate other sub-time domain resources besides the first sub-time domain resource, or in other words, at this time, it is equivalent to M=1.

[0177] Understandably, for several implementation methods when O1 is fixed in the protocol or when O1 is not present, S1, L1, and the first indication information can be included in physical layer signaling, higher layer signaling, or a combination thereof. For example, DCI includes at least one of S1, L1, and the first indication information, while the others are included in higher layer signaling or fixed in the protocol. See similar descriptions above for details.

[0178] Alternatively, the indication information may include at least one of the following: the start position information S1 of the first sub-time domain resource among the M sub-time domain resources, the duration information L1 of the first sub-time domain resource, and the first indication information. Specifically, the start position information S1 of the i-th sub-time domain resource among the M sub-time domain resources... i A fourth association exists with at least one of S1 and L1. Alternatively, the starting position information S of the i-th sub-time domain resource among the M sub-time domain resources can be... iThe fourth association relationship is determined based on at least one of S1 and L1. The description of the first association relationship above is relevant and will not be repeated here.

[0179] This application embodiment also provides another way to implement the indication information, which is similar to... Figure 9 The difference in the implementation shown is that the indication information carries the start position information S1 and duration information L of M sub-time domain resources. i , i∈[1,M] and O1 at least one. The starting position information S of the corresponding i-th sub-temporal resource. i With S1, L i At least one of O1 has a second association relationship. The starting position information S of the i-th sub-time domain resource can be replaced. i According to S1, L i At least one of O1 is used to determine this.

[0180] In one implementation, S i The second association with S1 may include:

[0181] S i =n*S1, or S i = i*S1, where n is a positive integer, and L is the duration information of the i-th sub-temporal resource. i =L1,

[0182] Where i is an integer greater than or equal to 2 and less than or equal to M.

[0183] In another implementation, the first correlation between Si and Li may include: Where j is a positive integer.

[0184] In another implementation, S i The first association with O1 may include: S i = n*O1, where n is a positive integer.

[0185] In another implementation, S i With S1 and L i The second association between them may include:

[0186] S i =nS1+L i-1 -1, or, S i =S1+nL i-1 -1, where n is a positive integer and i is an integer greater than or equal to 2 and less than or equal to M.

[0187] In another implementation, S i With S1, Li The second association between O1 can include:

[0188] S i =S i-1 +L i-1 -1+O1. For example, if M=2, S1=6, L1=1, L2=2, O1=2, then the first sub-time domain resource is symbol 6, and the second sub-time domain resource is symbols 8 and 9. For example, if M=3, S1=6, L1=1, L2=2, L3=1, O1=2, then the first sub-time domain resource is symbol 6, the second sub-time domain resource is symbols 8 and 9, and the third sub-time domain resource is symbol 11. Related descriptions can be found in [reference needed]. Figure 9 The corresponding content, as well as other content mentioned above, will not be repeated here.

[0189] Understandably, the above S1, L i One or more of O1 can be included in higher-level signaling or fixed in the protocol. For example, DCI may include S1, L i The RRC signaling contains O1, or the DCI contains S1, and the RRC signaling contains L. i O1, or, S1 included in DCI, L included in RRC signaling i By fixing O1 in the protocol, the overhead of DCI can be further reduced, and the reliability of the above information transmission can be improved.

[0190] This application embodiment also provides another way to implement the indication information, which is similar to... Figure 9 The difference in the implementation shown is that the indication information carries S1, L1, and the offset O of the i-th sub-temporal resource. i At least one of them, i∈[2,M]. The starting position information S of the corresponding i-th sub-temporal resource. i With S1, L1, O i At least one of them has a third association. The starting position information S of the i-th sub-time domain resource can be replaced. i According to S1, L1, O i It is determined by at least one of them.

[0191] In one implementation, S i The third association relationship with S1 can be found in the description of the first or second association relationship above, and will not be repeated here.

[0192] In another implementation, S i With S1, O i The third association between them can include S i = (i-1)*S1+O i , or Si =i*S1+O i Where n is a positive integer, and L is the duration information of the i-th sub-temporal resource. i =L1, where i is an integer greater than or equal to 2 and less than or equal to M. Furthermore, O i Greater than L1.

[0193] In another implementation, S i With S1, L1, O i The third association between them can include: S i =S i-1 +L1-1+O i For example, if M = 2, S1 = 6, L1 = 1, and O2 = 2, then the first sub-time domain resource is symbol 6, and the second sub-time domain resource is symbol 8. If M = 3, S1 = 6, L1 = 1, O2 = 2, and O3 = 1, then the first sub-time domain resource is symbol 6, the second sub-time domain resource is symbol 8, and the third sub-time domain resource is symbol 10. Related descriptions can be found in [reference needed]. Figure 9 The corresponding content, as well as other content mentioned above, will not be repeated here.

[0194] Understandably, the above S1, L1, O i One or more of these can be included in higher-level signaling or fixed in the protocol. For example, S1 and L1 can be included in DCI, and O can be included in RRC signaling. i Alternatively, S1 can be included in the DCI, and L1 can be included in the RRC signaling. i Alternatively, S1 can be included in the DCI, L1 in the RRC signaling, and O can be fixed in the protocol. i This can further reduce DCI overhead and improve the reliability of the above information transmission.

[0195] It is understandable that when M sub-time domain resources are all located in one time slot, the indication information in the above embodiments indicates {S i L i In the combinations of i∈[1,M], each {S i L iThere are certain constraints between these resources. For example, these constraints may include the absence of duplicate time-domain symbols between different sub-time-domain resources. They may also include the requirement that each sub-time-domain resource indicated by the indication information cannot exceed the first time slot, meaning that the time-domain symbol of any sub-time-domain resource should be between 0 and N-1 (except for the first time-domain resource that periodically repeats across multiple time slots). Furthermore, if some symbols in a sub-time-domain resource indicated by the indication information are located outside the first time slot, it can be understood that the symbols located outside the first time slot are invalid, and only the symbols located within the first time slot are valid and can be used to transmit sensing signals (downlink data). If all symbols occupied by a sub-time-domain resource indicated by the indication information are located outside the first time slot, it can be understood that the sub-time-domain resource is invalid, and the network device will not transmit sensing signals (downlink data) on that sub-time-domain resource. As mentioned above, these constraints may also include the existence of time intervals between at least two adjacent sub-time-domain resources, i.e., they are discontinuous. Further, any two adjacent sub-time-domain resources are discontinuous, with a time interval between them. Furthermore, the time intervals between different adjacent sub-time domain resources can be the same or different, and this application embodiment does not impose any restrictions on this. For example, a first time domain resource consists of three sub-time domain resources a, b, and c, where sub-time domain resource a occupies symbol 3, sub-time domain resource b occupies symbol 7, and sub-time domain resource c occupies symbol 13. Then, the time interval between a and b is 4, and the time interval between b and c is 6.

[0196] Furthermore, this application provides another communication method. In this method, the indication information mentioned above is included in higher-layer signaling, such as an RRC message. That is, network device 110 sends higher-layer signaling, such as an RRC message, to terminal device 120, indicating a first time-domain resource. The corresponding terminal device 120 receives the higher-layer signaling, such as the RRC message. In this step, the action performed by network device 110 can be performed by the processing unit 1100, processor 2100, or processing circuit 3100 of the aforementioned communication device (as a network device) through the transceiver unit 1200, transceiver 2200, or interface circuit 3200 of the aforementioned communication device (as a network device). Correspondingly, the action performed by terminal device 120 can be performed by the processing unit 1100, processor 2100, or processing circuit 3100 of the aforementioned communication device (as a network device) through the transceiver unit 1200, transceiver 2200, or interface circuit 3200.

[0197] Furthermore, the network device sends physical layer signaling, such as DCI, to the terminal device to instruct the terminal device to use the first time-domain resource indicated in the higher-layer signaling for PDSCH transmission. In other words, the physical layer signaling, such as DCI, is used to activate the first time-domain resource indicated by higher-layer signaling, such as an RRC message. Accordingly, the terminal device receives the DCI.

[0198] Furthermore, network device 110 can execute S102 to send PDSCH to the terminal device, and the corresponding terminal device receives the PDSCH. See the above for details.

[0199] This scheme can reduce the signaling overhead of DCI and increase the reliability of signaling transmission.

[0200] In the embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, or it may be an electrical, mechanical, or other form of connection.

[0201] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of this application.

[0202] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0203] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned readable storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0204] In addition, this application also provides a computer program for implementing the operations and / or processes performed by the network device in the information communication method provided in this application.

[0205] This application also provides a computer program for implementing the operations and / or processes performed by the terminal device in the communication method provided in this application.

[0206] This application also provides a computer-readable storage medium storing computer code, which, when executed on a computer, causes the computer to perform operations and / or processes performed by the network device in the communication method provided in this application.

[0207] This application also provides a computer-readable storage medium storing computer code, which, when executed on a computer, causes the computer to perform operations and / or processes performed by the terminal device in the communication method provided in this application.

[0208] This application also provides a computer program product, which includes computer code or a computer program, which, when run on a computer, causes the operations and / or processes performed by the network device in the communication method provided in this application to be executed.

[0209] This application also provides a computer program product, which includes computer code or a computer program, which, when run on a computer, causes the operations and / or processes performed by the terminal device in the communication method provided in this application to be executed.

[0210] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: Send downlink control information (DCI) to the terminal device. The DCI is used to indicate a first time domain resource in a first time slot. The first time domain resource consists of M sub-time domain resources. At least two adjacent sub-time domain resources are separated by a first time interval, where M is an integer greater than or equal to 2. A Physical Downlink Shared Channel (PDSCH) is transmitted on the first time-domain resource. The PDSCH is used to transmit the same redundant version of a transport block, and the signal carried by the PDSCH is used as a sensing signal. Receive all or part of the echo signal of the PDSCH, wherein the echo signal is used to sense a first target, the first target being different from the terminal device.

2. The method according to claim 1, characterized in that, The DCI is used to indicate that the first time-domain resource includes: The DCI includes the start position information of each of the M sub-time domain resources, and / or the duration information of each of the M sub-time domain resources.

3. The method according to claim 1, characterized in that, The DCI is used to indicate that the first time-domain resource includes: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource and offset At least one of the M sub-time domain resources, wherein the starting position information of the i-th sub-time domain resource is included. With the , , At least one of them has a first association relationship, and the duration information of the i-th sub-time domain resource , where i is an integer greater than or equal to 2 and less than or equal to M.

4. The method according to claim 1, characterized in that, The DCI is used to indicate that the first time-domain resource includes: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the i-th time domain resource among the M sub-time domain resources and offset At least one of them, wherein the starting position information of the i-th sub-temporal domain resource With the , , At least one of them has a second association relationship, where i is an integer greater than or equal to 2 and less than or equal to M.

5. The method according to claim 1, characterized in that, The DCI is used to indicate that the first time-domain resource includes: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource And the offset of the i-th of the M sub-time domain resources. At least one of them, wherein the starting position information of the i-th sub-temporal domain resource. With the , , At least one of them has a third association relationship, the duration information of the i-th sub-time domain resource. , where i is an integer greater than or equal to 2 and less than or equal to M.

6. The method according to claim 1, characterized in that, The DCI is used to indicate that the first time-domain resource includes: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource And at least one of the first indication information, wherein when the first indication information is a first value, it indicates the starting position information of the i-th sub-time domain resource among the M sub-time domain resources. With the ,and At least one of them has a fourth association relationship, the duration information of the i-th sub-time domain resource. , where i and n are integers greater than or equal to 2 and less than or equal to M.

7. The method according to any one of claims 1-6, characterized in that, Before sending downlink control information (DCI) to the terminal device, the method further includes: Send Radio Resource Control (RRC) signaling to the terminal device, wherein the RRC signaling indicates at least one candidate time-domain resource, wherein each candidate time-domain resource corresponds to an index, and the at least one candidate time-domain resource includes the first time-domain resource; The DCI is used to indicate that the first time-domain resource includes: the DCI contains the index corresponding to the first time-domain resource.

8. The method according to any one of claims 1-6, characterized in that, The first time period is the length of X symbols, where X is an integer greater than or equal to 1; or it is Y ms, where Y is greater than 0; or it is Z time slots, where Z is greater than 0.

9. A communication method, characterized in that, include: Receive downlink control information (DCI), the DCI being used to indicate a first time domain resource in a first time slot, the first time domain resource being composed of M sub-time domain resources, wherein at least two adjacent sub-time domain resources are spaced apart by a first time interval, and M is an integer greater than or equal to 2; A Physical Downlink Shared Channel (PDSCH) is received on the first time-domain resource. The PDSCH is used to transmit the same redundant version of a transport block. The signal carried by the PDSCH is used as a sensing signal. The echo signal of the PDSCH is used to sense a first target, which is different from the terminal device.

10. The method according to claim 9, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of each of the M sub-time domain resources and / or the duration information of each of the M sub-time domain resources.

11. The method according to claim 9, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource and offset At least one of the M sub-time domain resources, wherein the starting position information of the i-th sub-time domain resource is included. With the , , At least one of them has a first association relationship, and the duration information of the i-th sub-time domain resource , where i is an integer greater than or equal to 2 and less than or equal to M.

12. The method according to claim 9, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the i-th time domain resource among the M sub-time domain resources and offset At least one of them, wherein the starting position information of the i-th sub-temporal domain resource With the , , At least one of them has a second association relationship, where i is an integer greater than or equal to 2 and less than or equal to M.

13. The method according to claim 9, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource And the offset of the i-th of the M sub-time domain resources. At least one of them, wherein the starting position information of the i-th sub-temporal domain resource With the , , At least one of them has a third association relationship, the duration information of the i-th sub-time domain resource. , where i is an integer greater than or equal to 2 and less than or equal to M.

14. The method according to claim 9, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource And at least one of the first indication information, wherein when the first indication information is a first value, it indicates the starting position information of the i-th sub-time domain resource among the M sub-time domain resources. and ,and At least one of them has a fourth association relationship, the duration information of the i-th sub-time domain resource. , where i and n are integers greater than or equal to 2 and less than or equal to M.

15. The method according to any one of claims 9-14, characterized in that, Before receiving the downlink control information (DCI), the method further includes: Receive Radio Resource Control (RRC) signaling, the RRC signaling indicating at least one candidate time-domain resource, wherein each candidate time-domain resource corresponds to an index, and the at least one candidate time-domain resource includes the first time-domain resource; The DCI used to indicate a first time-domain resource in a first time slot includes: the DCI contains an index corresponding to the first time-domain resource.

16. The method according to any one of claims 9-14, characterized in that, The first time period is the length of X symbols, where X is an integer greater than or equal to 1; or it is Y ms, where Y is greater than 0; or it is Z time slots, where Z is greater than 0.

17. A communication device, characterized in that, Includes processing units and transceiver units. The processing unit is configured to send downlink control information (DCI) to the terminal device through the transceiver unit. The DCI is used to indicate a first time-domain resource in a first time slot, wherein the first time-domain resource consists of M sub-time-domain resources, and at least two adjacent sub-time-domain resources are spaced apart by a first time interval, where M is an integer greater than or equal to 2. The processing unit is also configured to send a physical downlink shared channel (PDSCH) on the first time-domain resource. The PDSCH is used to transmit the same redundant version of a transport block, and the signal carried by the PDSCH is used as a sensing signal. The processing unit is further configured to receive all or part of the echo signal of the PDSCH through the transceiver unit, wherein the echo signal is used to sense a first target, the first target being different from the terminal device.

18. The apparatus according to claim 17, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of each of the M sub-time domain resources and / or the duration information of each of the M sub-time domain resources.

19. The apparatus according to claim 17, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource and offset At least one of the M sub-time domain resources, wherein the starting position information of the i-th sub-time domain resource is included. With the , , At least one of them has a first association relationship, and the duration information of the i-th sub-time domain resource. , where i is an integer greater than or equal to 2 and less than or equal to M.

20. The apparatus according to claim 17, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the i-th time domain resource among the M sub-time domain resources and offset At least one of them, wherein the starting position information of the i-th sub-temporal domain resource With the , , At least one of them has a second association relationship, where i is an integer greater than or equal to 2 and less than or equal to M.

21. The apparatus according to claim 17, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource And the offset of the i-th of the M sub-time domain resources. At least one of them, wherein the starting position information of the i-th sub-temporal domain resource With the , , At least one of them has a third association relationship, the duration information of the i-th sub-time domain resource. , where i is an integer greater than or equal to 2 and less than or equal to M.

22. The apparatus according to claim 17, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource And at least one of the first indication information, wherein when the first indication information is a first value, it indicates the starting position information of the i-th sub-time domain resource among the M sub-time domain resources. and ,and At least one of them has a fourth association relationship, the duration information of the i-th sub-time domain resource. Where i and n are integers greater than or equal to 2 and less than or equal to M.

23. The apparatus according to any one of claims 17-22, characterized in that, Before sending downlink control information (DCI) to the terminal device, the transceiver unit is further configured to: Send Radio Resource Control (RRC) signaling to the terminal device, wherein the RRC signaling indicates at least one candidate time-domain resource, wherein each candidate time-domain resource corresponds to an index, and the at least one candidate time-domain resource includes the first time-domain resource; The DCI used to indicate a first time-domain resource in a first time slot includes: the DCI contains an index corresponding to the first time-domain resource.

24. The apparatus according to any one of claims 17-22, characterized in that, The first time period is the length of X symbols, where X is an integer greater than or equal to 1; or it is Y ms, where Y is greater than 0; or it is Z time slots, where Z is greater than 0.

25. A communication device, characterized in that, Includes processing units and transceiver units. The processing unit is configured to receive downlink control information (DCI) through the transceiver unit. The DCI indicates a first time-domain resource in a first time slot. The first time-domain resource consists of M sub-time-domain resources, and at least two adjacent sub-time-domain resources are spaced apart by a first time interval, where M is an integer greater than or equal to 2. The processing unit also receives a physical downlink shared channel (PDSCH) on the first time-domain resource. The PDSCH is used to transmit the same redundant version of a transport block. The signal carried by the PDSCH is used as a sensing signal, and the echo signal of the PDSCH is used to sense a first target, which is different from the communication device.

26. The apparatus according to claim 25, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of each of the M sub-time domain resources and / or the duration information of each of the M sub-time domain resources.

27. The apparatus according to claim 25, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource and offset At least one of the M sub-time domain resources, wherein the starting position information of the i-th sub-time domain resource is included. With the , , At least one of them has a first association relationship, and the duration information of the i-th sub-time domain resource , where i is an integer greater than or equal to 2 and less than or equal to M.

28. The apparatus according to claim 25, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the i-th time domain resource among the M sub-time domain resources and offset At least one of them, wherein the starting position information of the i-th sub-temporal domain resource. With the , , At least one of them has a second association relationship, where i is an integer greater than or equal to 2 and less than or equal to M.

29. The apparatus according to claim 25, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource And the offset of the i-th of the M sub-time domain resources. At least one of them, wherein the starting position information of the i-th sub-temporal domain resource With the , , At least one of them has a third association relationship, the duration information of the i-th sub-time domain resource. , where i is an integer greater than or equal to 2 and less than or equal to M.

30. The apparatus according to claim 25, characterized in that, The DCI is used to indicate the first time-domain resource in the first time slot, including: The DCI includes the start position information of the first sub-time domain resource among the M sub-time domain resources. The duration information of the first sub-time domain resource And at least one of the first indication information, wherein when the first indication information is a first value, it indicates the starting position information of the i-th sub-time domain resource among the M sub-time domain resources. and ,and At least one of them has a fourth association relationship, the duration information of the i-th sub-time domain resource. Where i and n are integers greater than or equal to 2 and less than or equal to M.

31. The apparatus according to any one of claims 25-30, characterized in that, The transceiver unit is also used for: Receive Radio Resource Control (RRC) signaling, the RRC signaling indicating at least one candidate time-domain resource, wherein each candidate time-domain resource corresponds to an index, and the at least one candidate time-domain resource includes the first time-domain resource; The DCI used to indicate a first time-domain resource in a first time slot includes: the DCI contains an index corresponding to the first time-domain resource.

32. The apparatus according to any one of claims 25-30, characterized in that, The first time period is the length of X symbols, where X is an integer greater than or equal to 1; or it is Y ms, where Y is greater than 0; or it is Z time slots, where Z is greater than 0.

33. A computer-readable storage medium, characterized in that, Used to store instructions that, when executed by a computer, cause the computer to perform the method as described in any one of claims 1-8, or the method as described in any one of claims 9-16.

34. A communication device, characterized in that, The device includes a processor coupled to a memory for storing instructions which, when executed by the processor, cause the communication device to perform the method as described in any one of claims 1-8.

35. A communication device, characterized in that, The device includes a processor coupled to a memory for storing instructions which, when executed by the processor, cause the communication device to perform the method as described in any one of claims 9-16.

36. A computer program product, characterized in that, Includes a computer program that, when run by a computer, causes the computer to perform the method as described in any one of claims 1-8, or to perform the method as described in any one of claims 9-16.

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