WO2020061950A1

WO2020061950A1 - Communication method, terminal device, and network device

Info

Publication number: WO2020061950A1
Application number: PCT/CN2018/108097
Authority: WO
Inventors: 唐海
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-09-27
Filing date: 2018-09-27
Publication date: 2020-04-02
Also published as: CN111886912B; CN111886912A; TW202041072A

Abstract

Embodiments of the present application relate to a communication method, a terminal device, and a network device. The method comprises: the terminal device receives first indication information sent by the network device, the first indication information being used for indicating a time-frequency resource set, and the time-frequency resource set comprising at least one time-frequency resource; the terminal device receives second indication information sent by the network device, the second indication information being used for indicating occupied time-frequency resources in the time-frequency resource set. According to the communication method, the terminal device, and the network device in the embodiments of the present application, the accuracy of indicating that the time-frequency resources are occupied can be improved.

Description

Communication method, terminal equipment and network equipment

Technical field

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

Background technique

New wireless (New Radio, NR) system introduces Ultra Reliable and Low Latency Communications (URLLC). The feature of this service is that it can achieve ultra high reliability within extreme delay (for example, 1ms). (E.g., 99.999%). In order to achieve this goal, the preemption mechanism (Preemption) is introduced in the downlink, that is, the URLLC service can be inserted in the process of Enhanced Mobile Broadband (eMBB) service transmission. In order to reduce the impact of the URLLC service on the eMBB service, preemption indication signaling is introduced, which is used to notify the terminal device which time-frequency resources of the eMBB service are occupied by the URLLC service.

However, the accuracy of the existing method for indicating that the time-frequency resource is occupied is not high.

Summary of the Invention

The embodiments of the present application provide a communication method, a terminal device, and a network device, which can improve the accuracy of indicating that time-frequency resources are occupied.

According to a first aspect, a communication method is provided. The method includes: receiving, by a terminal device, first indication information sent by a network device, where the first indication information is used to indicate a time-frequency resource set, and the time-frequency resource set includes at least A time-frequency resource;

Receiving, by the terminal device, second instruction information sent by the network device, where the second instruction information is used to indicate occupied time-frequency resources in the time-frequency resource set.

In a second aspect, a communication method is provided. The method includes: a network device sending first instruction information to a terminal device, where the first instruction information is used to indicate a time-frequency resource set, and the time-frequency resource set includes at least one Time-frequency resources

The network device sends second instruction information to the terminal device, where the second instruction information is used to indicate occupied time-frequency resources in the time-frequency resource set.

According to a third aspect, a terminal device is provided to execute the method in the first aspect or the implementations thereof.

Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect or each implementation manner thereof.

According to a fourth aspect, a network device is provided for executing the method in the second aspect or the implementation manners thereof.

Specifically, the network device includes a function module for executing the method in the second aspect or the implementations thereof.

In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, and execute the method in the above-mentioned first aspect or its implementations.

According to a sixth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or the implementations thereof.

In a seventh aspect, a chip is provided for implementing any one of the first to second aspects or a method in each implementation thereof.

Specifically, the chip includes a processor for invoking and running a computer program from a memory, so that a device installed with the chip executes any one of the first aspect to the second aspect described above or implementations thereof. method.

According to an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to execute the method in any one of the first to second aspects described above or in its implementations.

In a ninth aspect, a computer program product is provided, including computer program instructions that cause a computer to execute the method in any one of the first to second aspects described above or in various implementations thereof.

In a tenth aspect, a computer program is provided that, when run on a computer, causes the computer to execute the method in any one of the first to second aspects described above or in its implementations.

In the above technical solution, the network device sends the time-frequency resource set to the terminal device, and then indicates the occupied time-frequency resource to the terminal device based on the time-frequency resource set. The thus-occupied time-frequency resource is the actually occupied time-frequency. Resources, thereby improving the accuracy of indicating that time-frequency resources are occupied.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.

FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 3 is a schematic diagram illustrating that time-frequency resources are occupied according to an embodiment of the present application.

FIG. 4 is another schematic diagram indicating that time-frequency resources are occupied according to an embodiment of the present application.

FIG. 5 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG. 7 is a schematic block diagram of a network device according to an embodiment of the present application.

FIG. 8 is a schematic block diagram of a communication device according to an embodiment of the present application.

FIG. 9 is a schematic block diagram of a chip according to an embodiment of the present application.

FIG. 10 is a schematic block diagram of a communication system according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (Wideband Code Division Multiple Access) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or a communication terminal or a terminal). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located within the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system. (Evolutional NodeB, eNB or eNodeB), or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device may be a mobile switching center, relay station, access point, vehicle equipment, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in public land mobile networks (PLMN) that will evolve in the future.

The communication system 100 further includes at least one terminal device 120 located within a coverage area of the network device 110. As the "terminal equipment" used herein includes, but is not limited to, connection via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection ; And / or another data connection / network; and / or via a wireless interface, such as for cellular networks, Wireless Local Area Networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and / or another terminal device configured to receive / transmit communication signals; and / or Internet of Things (IoT) devices. A terminal device configured to communicate through a wireless interface may be referred to as a “wireless communication terminal”, a “wireless terminal”, or a “mobile terminal”. Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communications systems (PCS) terminals that can combine cellular radiotelephones with data processing, facsimile, and data communications capabilities; can include radiotelephones, pagers, Internet / internal PDA with network access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palm-type receivers or others including radiotelephone transceivers Electronic device. A terminal device can refer to an access terminal, user equipment (User Equipment), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or User device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Processing (PDA), and wireless communication. Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks, or terminal devices in future evolved PLMNs, etc.

Optionally, terminal devices 120 may perform terminal direct device (D2D) communication.

Optionally, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like in this embodiment of the present application is not limited thereto.

It should be understood that the device having a communication function in the network / system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobile management entity, and the like, which is not limited in the embodiments of the present application.

At present, if the URLLC service occupies the time-frequency resources of the eMBB service, the downlink preemption indication includes two methods: (1) 14 bits correspond to 14 symbol groups, indicating which time-frequency resources of the eMBB service are occupied, of which, The frequency domain bandwidth of the occupied time-frequency resource is the Bandwidth Part (BWP) bandwidth. (2) 14 bits correspond to 7 symbol groups * 2 frequency bands, indicating which time-frequency resources of the eMBB service are occupied, wherein the frequency domain bandwidth of the indicated occupied time-frequency resources is (BWP / 2) rounded bandwidth .

The above instructions are mainly for unpredictable URLLC services. The time-frequency resources occupied by the services are unpredictable, but most of them are large-bandwidth transmissions. Therefore, coarse-grained frequency domain and fine-grained time domain instructions are used. Because coarse-grained indication is used in the frequency domain, the bandwidth of the occupied time-frequency resource may be greater than or less than the bandwidth of the actually occupied time-frequency resource, so the accuracy of this indication is low.

In view of this, this application proposes a communication method, which can improve the accuracy of indicating that the time-frequency resource is occupied.

FIG. 2 is a schematic flowchart of a communication method 200 according to an embodiment of the present application. The method 200 may be executed by a terminal device, and may include at least part of the following content.

It should be understood that the embodiments of the present application can be applied not only to semi-persistent / semi-static transmission of positive acknowledgements (Acknowledgment, ACK) / negative acknowledgements (Negative Acknowledgment, NACK), but also to semi-persistent / semi-static downlink data transmission. Of course, the embodiments of the present application can also be applied to a scenario of uplink transmission.

In 210, the terminal device receives the first instruction information sent by the network device.

The first indication information is used to indicate a time-frequency resource set, and the time-frequency resource set includes at least one time-frequency resource. For convenience of description, this embodiment of the present application refers to the terminal device as a first terminal device and the time-frequency resource set as a first time-frequency resource set.

Optionally, in the embodiment of the present application, the first time-frequency resource set may represent a time-frequency resource set that may be occupied.

Optionally, in this embodiment of the present application, the time-frequency resource in the first time-frequency resource set may be a transmission opportunity. For example, the bit {11000100} of the first indication information may indicate 8 transmission opportunities, and one bit corresponds to one transmission opportunity.

Optionally, the time-frequency resources in the first time-frequency resource set may be time-frequency resources belonging to at least one terminal device for transmitting at least one service.

Exemplarily, the time-frequency resources in the first time-frequency resource set may be resources that belong to the first terminal device for transmitting the first service. At this time, the time-frequency resources in the first time-frequency resource set may be used by the first terminal. The second service of the device is occupied, or is occupied by the first service and / or the second service of the second terminal device.

As another example, the time-frequency resources in the first time-frequency resource set may be resources that belong to the second terminal device to transmit the first service. At this time, the time-frequency resources in the first time-frequency resource set may be used by the first terminal device. Occupied by the first service and / or the second service, or occupied by the second service of the second terminal device.

For another example, the time-frequency resources in the first time-frequency resource set may be resources that belong to the first terminal device and the second terminal device to transmit the first service. At this time, the time-frequency resources in the first time-frequency resource set may be Occupied by the second service of the first terminal device and / or the second terminal device.

The second service is at least one service other than the first service. The priority of the second service may be higher than the priority of the first service, or the delay of the second service may be shorter than the delay of the first service. For example, the first service may be an eMBB service, and the second service may be a URLLC service.

Optionally, the granularity of the time-frequency resources may be a symbol level, and the granularity of the frequency-domain resources may be a Physical Resource Block (PRB) level. Exemplarily, the frequency domain resource of the time-frequency resource may be at least one PRB. Such as 1-2 PRBs. As another example, the frequency domain resource of the time-frequency resource may be at least one Resource Block Group (RBG). Such as 1-2 RBG.

Optionally, when the first time-frequency resource set includes multiple time-frequency resources, two adjacent time-frequency resources in the multiple time-frequency resources may be continuous or discontinuous in the time domain. This application The embodiment does not specifically limit this.

For example, time-frequency resource 1 and time-frequency resource 2 are adjacent in the time domain. The time-domain position of time-frequency resource 1 may be symbol 1 and symbol 2, and the time-domain position of time-domain resource 2 may be symbol 6 and symbol 7.

In the embodiment of the present application, the first indication information indicates the first time-frequency resource set. As an example, it can be understood that the first indication information explicitly indicates the first time-frequency resource set.

Optionally, the first indication information may indicate only the first time-frequency resource set, or may indicate the first time-frequency resource set and the second time-frequency resource set, where the second time-frequency resource set is a division of the first time-frequency resource. At least one time-frequency resource set outside the set.

It can be seen that when the first indication information indicates the first time-frequency resource set and the second time-frequency resource set, the network device can only send one first indication information to the terminal device, and then all the time-frequency resource sets can be indicated.

As another example, the first indication information indicates the first time-frequency resource set, which can be understood as: the first indication information implicitly indicates the first time-frequency resource set.

In a possible embodiment, the first indication information may indicate a first time-frequency resource set configuration. At this time, the terminal device may determine the first time-frequency resource set according to the first time-frequency resource set configuration.

Optionally, the first time-frequency resource set configuration may include, but is not limited to, at least one of the following: a time-domain position of each time-frequency resource in the first time-frequency resource set, and each of the first time-frequency resource set. The frequency domain position of each time-frequency resource, the period of each time-frequency resource in the first time-frequency resource set, and the pattern of each time-frequency resource in the first time-frequency resource set.

The time domain position of each time-frequency resource can be understood as the position of the time unit where each time-frequency resource is located. Optionally, the time unit mentioned herein may be a subframe, a time slot, a symbol, or a short transmission interval (Short Transmission Interval, sTTI). For example, the time-frequency resource is located in the fourth time slot and the fifth time slot in the time domain.

Exemplarily, the configuration of the first time-frequency resource set may include: frequency-domain resources of one time-frequency resource are PRB1-PR5, occupying 2 symbols in the time domain, 2 symbols in the period, and 1 symbol in the time domain offset .

For another example, the configuration of the first time-frequency resource set may include: a pattern of the time-frequency resource is a sub-slot occupation pattern {10101110111010111011} within one radio frame.

In another possible embodiment, the first indication information may indicate other parameters. After receiving the first indication information, the terminal device may determine the first time-frequency resource set according to other parameters indicated by the first indication information.

Optionally, the other parameter may be an index of the first time-frequency resource set. The terminal device may determine the first time-frequency resource set among the multiple time-frequency resource sets according to the index.

For example, if there are three time-frequency resource sets, which are a first time-frequency resource set, a second time-frequency resource set, and a third time-frequency resource set, and the index of the first time-frequency resource set is 1, the terminal device may 1. Determine a first time-frequency resource set.

In another possible embodiment, the first indication information may indicate identification information of the first time-frequency resource set. The terminal device may determine the first time-frequency resource set according to the identification information.

Optionally, the first time-frequency resource set may be predefined. Preferably, the first time-frequency resource set may be semi-statically configured, that is, at least one time-frequency resource in the first time-frequency resource set may be a semi-static resource.

For example, at least one time-frequency resource in the first time-frequency resource set may be an ACK / NACK feedback resource corresponding to a schedule-free transmission (Grant Free), or a resource allocation for downlink semi-persistent scheduling (SPS) the same.

Optionally, the first indication information may be carried in Radio Resource Control (RRC) signaling.

Optionally, the method may further include: the terminal device receives the fourth indication information sent by the network device. The fourth indication information may be used to activate or deactivate time-frequency resources in the first time-frequency resource set.

Optionally, the fourth indication information may be carried in physical layer signaling or Media Access Control (MAC) signaling. For example, the fourth indication information may be carried in downlink control information (Downlink Control Information) (DCI). As another example, the fourth indication information may be carried in a common physical downlink control channel (Physical Downlink Control Channel, PDCCH).

As an example, the fourth indication information may activate or deactivate time-frequency resources in the first time-frequency resource set through at least one bit.

Exemplarily, the fourth indication information may activate the time-frequency resources in the first time-frequency resource set by bit “1”, and deactivate the time-frequency resources in the first time-frequency resource set by bit “0”.

As another example, the number of bits of the fourth indication information may be multiple. If the multiple bits are the same, it means that the time-frequency resources in the first time-frequency resource set are activated. If there are at least two bits in the multiple bits, Different bits indicate that the time-frequency resources in the first time-frequency resource set are deactivated. For example, "000" indicates activation of time-frequency resources in the first time-frequency resource set, and "010" indicates deactivation of time-frequency resources in the first time-frequency resource set.

As another example, the fourth indication information may activate or deactivate time-frequency resources in the first time-frequency resource set by using the first parameter.

Exemplarily, if the fourth indication information includes the first parameter, it means that the time-frequency resource in the first time-frequency resource set is activated; if the fourth indication information does not include the first parameter, it means that the first time-frequency is deactivated Time-frequency resources in the resource collection.

It should be noted that the embodiment of the present application does not specifically limit the first parameter, and any parameter that can activate or deactivate the time-frequency resource in the first time-frequency resource set is included in the protection scope of the present application.

As another example, the fourth indication information may include activation signaling, where the activation signaling is used to activate time-frequency resources in the first time-frequency resource set; and / or the fourth indication information may include deactivation signaling The deactivation signaling may be used to deactivate time-frequency resources in the first time-frequency resource set.

When the fourth indication information includes activation signaling but does not include deactivation signaling, the fourth indication information may activate time-frequency resources in the first time-frequency resource set through activation signaling, and deactivate through at least one bit or the first parameter. Time-frequency resources in the first time-frequency resource set.

When the fourth indication information includes deactivation signaling but does not include activation signaling, the third indication information may activate time-frequency resources in the first time-frequency resource set through at least one bit or the first parameter, and may be deactivated through deactivation signaling. Time-frequency resources in the first set of time-frequency resources are activated.

When the fourth indication information includes activation signaling and deactivation signaling, the third indication information may activate time-frequency resources in the first time-frequency resource set through activation signaling, and deactivate the first time-frequency resources through deactivation signaling. Time-frequency resources in the collection.

Optionally, the activation signaling and the deactivation signaling may be transmitted through the same DCI format. As an example, the DCI format may include an N-bit activation signaling field. When the N bits are all 1, it indicates that the time-frequency resources in the first time-frequency resource set are activated. When the N bits are all 0, it indicates that Deactivate the time-frequency resources in the first time-frequency resource set. Among them, N is a positive integer.

Optionally, in the embodiment of the present application, the effective time of the activation signaling or the deactivation signaling may be preset or indicated by the network device to the terminal device through signaling. For example, a network device may configure activation time of activation signaling to be p time units through high-level signaling. When a terminal device receives activation signaling on time unit n, it may activate on time unit n + p and later time units. Time-frequency resources in the first set of time-frequency resources that appear. For another example, the network device can configure the activation time of the deactivation signaling to be q time units through high-level signaling. When the terminal device receives the deactivation signaling on time unit n, it can deactivate on time unit n + q and later Time-frequency resources in the first time-frequency resource set appearing in the time unit of.

It should be understood that, in the embodiments of the present application, the term “and / or” is merely an association relationship describing an associated object, which means that there may be three kinds of relationships, for example, A and / or B may indicate that: A exists alone, There are three cases, A and B, and B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

In 220, the terminal device receives the second instruction information sent by the network device.

The second indication information may be used to indicate the time-frequency resources that are occupied in the first set of time-frequency resources, that is, the second indication information may be used to indicate the time-frequency resources that are actually occupied among the time-frequency resources that may be occupied. .

In this way, the network device indicates to the terminal device the actually occupied time-frequency resource based on the possibly occupied time-frequency resource, so that the size of the occupied time-frequency resource indicated by the network device is the size of the actually occupied time-frequency resource. Thereby, the accuracy of indicating that resources are occupied can be improved.

Optionally, the second indication information may be preemption indication signaling. The second indication information may be carried in physical layer signaling, such as in DCI.

Optionally, in the embodiment of the present application, the second indication information may indicate a time-frequency resource occupied in the first time-frequency resource set by using a bit mapping manner. The manner of bit mapping can be understood as the one-to-one correspondence between the bits of the second indication information and the time-frequency resources in the first time-frequency resource set.

Optionally, the bit {1} may indicate that the time-frequency resource in the first time-frequency resource set is occupied, and {0} indicates that the time-frequency resource in the first time-frequency resource set is not occupied. For example, there are four time-frequency resources in the first time-frequency resource set, that is, four time-frequency resources that may be occupied. The second indication information may use {0010} to indicate whether the four first time-frequency resources are actually occupied. It can be seen that the third first time-frequency resource is occupied, and the other first time-frequency resources are not occupied.

It should be understood that the bit “1” in the embodiment of the present application indicates that the time-frequency resource is occupied, and “0” indicates that the time-frequency resource is not occupied. The scope of the embodiments of the present application. Certainly, in the embodiment of the present application, the bit “0” may be used to indicate that the time-frequency resource is occupied, and “1” indicates that the time-frequency resource is not occupied, or other parameters may be used to indicate whether the time-frequency resource is occupied.

It should be noted that, in the embodiment of the present application, since each time-frequency resource in the first time-frequency resource set corresponds to one transmission opportunity, that is, one bit of the second indication information corresponds to one transmission opportunity.

It should also be noted that the number of bits of the second indication information is limited. When the first time-frequency resource set includes multiple time-frequency resources, the bits of the second indication information may indicate the number of bits in the first time-frequency resource set. At least part of the time-frequency resources. At this time, the terminal device may determine which time-frequency resources in the first time-frequency domain resource set correspond to the time-frequency resources corresponding to the bits carried in the second indication information. For example, the first time-frequency resource set includes 10 time-frequency resources, and the bit carried in the second indication information is {0010}. The terminal device needs to determine that the four time-frequency resources indicated by the second indication information are 10 time-frequency resources. Which 4 time-frequency resources

At this time, optionally, when the second indication information indicates time-frequency resources occupied by at least part of the time-frequency domain resources in the first time-frequency domain resource set, the method 200 may further include: the terminal device determines a time window, where , The time window includes at least part of the time-frequency resources in the first time-frequency resource set. The terminal device may then determine the occupied time-frequency resources in the first time-frequency resource set based on the second indication information and at least part of the time-frequency resources in the first time-frequency resource set included in the time window.

For example, the first time-frequency resource set includes 10 time-frequency resources, which are time-frequency resource 1, time-frequency resource 2, ..., time-frequency resource 10, and the terminal device determines that the time window includes time-frequency resource 2 and time-frequency. Resource 3, time-frequency resource 4 and time-frequency resource 5, and the bit carried in the second indication information is {0010}, then the terminal device may determine that time-frequency resource 5 is occupied among the ten time-frequency resources.

The time window may be expressed as a time range, and the time-frequency resources in the time window may be time-frequency resources indicated by the second indication information. That is, the bits of the second indication information correspond to the time-frequency resources in the time window on a one-to-one basis.

Optionally, the time window may be agreed upon by the agreement.

Alternatively, the time window may be determined by the network device. In this case, the method 200 may further include: the network device sends third instruction information to the terminal device, where the third instruction may be used to indicate a time window.

In the embodiment of the present application, the network device may send the first instruction information, the second instruction information, and the third instruction information to the terminal device together, and the network device may also send the first instruction information, the second instruction information, and the third instruction, respectively. Information, of course, the network device may also send at least two of the first indication information, the second indication information, and the third indication information together, and the other one is sent independently, which is not specifically limited in the embodiment of the present application.

Typically, the network device may send the first instruction information and the third instruction information to the terminal device together, and independently send the second instruction information to the terminal device. At this time, the first indication information and the third indication information may be carried in RRC signaling, and the second indication information may be carried in physical layer signaling.

As an example, the time window may be a first time period before a time unit from which the terminal device receives the second indication information.

Optionally, the division of the time window may be based on the absolute time. For example, 5ms is a time window. At this time, the first time period is 5ms. For another example, the first time period may be the time point when the terminal device receives the second indication information as a starting point, the previous 1-2 time slots, or may be a fixed window, for example, a radio frame.

Optionally, the time window may be divided based on the number of time-frequency resources. For example, 10 time-frequency resources are a time window. At this time, the first time period is a time period in which the ten time-frequency resources are located. In this case, different time windows may have different lengths.

As another example, the time window may be a first time period after a time unit from the time when the terminal device receives the second indication information.

As another example, the time window may be a second time period before the time unit from which the terminal device receives the second indication information, and a third time period after the time unit from which the terminal device receives the second indication information .

The sum of the second time period and the third time period may be equal to the first time period. The second time period may be equal to or different from the third time period, which is not limited in the embodiment of the present application.

In the embodiment of the present application, the number of bits of the second indication information received by the terminal device at different times is the same.

If the time window is divided based on the number of time-frequency resources, the number of time-frequency resources in the time window corresponding to the second instruction information received by the terminal device at different times is the same. In this case, the terminal device is in a different The number of bits of the second indication information received at the time is always the same.

If the time window is divided based on absolute time, the number of time-frequency resources in the first time window may be different from the number of time-frequency resources in the second time window. The first time window is the current time received by the terminal device. A time window corresponding to the second instruction information, and the second time window is a time window corresponding to the second instruction information received at least once before the terminal device.

For example, 5ms is a time window, and the terminal device receives the second indication information at the first time, and 5ms before the first time is the first time window, and the first time window includes 3 time-frequency resources. The terminal device receives the second instruction information at the second time, and 5ms before the second time is the second time window, and the second time window includes 2 time-frequency resources.

In this case, the number of bits of the second instruction information received by the terminal device at any time is a first value, where the first value is within a time window corresponding to the second instruction information received by the terminal device at different times. The value with the most time-frequency resources.

For example, the terminal device has 3 time-frequency resources in the time window corresponding to the second instruction information received at the first moment, and has 2 time-frequency resources in the time window corresponding to the second instruction information received at the second time. The number of bits of the second indication information is three.

Optionally, if the number of resources in the time window is less than the number of bits of the second indication information, the redundant bits may use placeholders. By way of example, "0" can be used to represent a placeholder.

Optionally, the placeholder may be located at the first bit of the bit of the second indication information, or may be located at the last bit of the bit of the second indication information, which is not specifically limited in this embodiment of the present application.

The resource occupancy indication in the embodiment of the present application is described below with reference to FIGS. 3 and 4 by way of example.

FIG. 3 is an occupation indication of a periodic time-frequency resource. The network device is configured with periodic time-frequency resources for downlink transmission. The periodic time-frequency resources are defined as a 2ms time window, and the time-frequency resource occupation is indicated based on the granularity of the sub-slots. Among them, 4 sub-seconds are included in 1ms Slot, 2ms contains 8 sub-slots. The network device indicates the time-frequency resource {1010101010101010} that may be occupied by semi-static transmission through 8 bits, and is configured to the terminal device through high-level signaling. And the network device indicates the occupancy of the semi-static resource to the terminal device based on the configuration. As shown in the figure, the time-frequency resources filled with slashes are actually occupied, and the semi-static resources that are not filled are not occupied. The bit of the second indication information is {0001}, which represents the last of the four semi-static resources that may be occupied. A semi-static resource is occupied.

FIG. 4 is an indication of occupation of aperiodic time-frequency resources. The network device is configured with aperiodic time-frequency resources for downlink transmission, and the network device indicates the time-frequency resources {1000101010101010} that may be occupied by semi-static transmission through 8 bits. The network device is configured to the terminal device through high-level signaling. And the network device indicates the occupancy of the semi-static resource to the terminal device based on the configuration. As shown in the figure, the resources filled with slashes are actually occupied, and the non-filled semi-static resources are not occupied. Because the number of semi-static resources in the two time windows is different, the maximum value of 4 is used. For cases where the number of semi-static resources is small, redundant placeholders are used. As shown in FIG. 4, there are 4 bits of the second indication information, the first three bits are used to indicate whether the semi-static resource is occupied, and the last bit is a redundant place. Therefore, the bit of the second indication information is {0010}, which indicates that the last semi-static resource among the 3 semi-static resources that may be occupied is occupied.

In the embodiment of the present application, as an example, the second indication information may be scrambled by using an RNTI other than a preemption indication (INT) -a wireless network temporary identity (Radio Network Tempory Identity) (RNTI).

It should be noted that the second indication information in the prior art, that is, the preemption indication signaling, is scrambled by INT-RNTI, and the second indication information in the embodiment of the present application is scrambled by RNTI other than INT-RNTI. After receiving the second indication information, the terminal device may distinguish the second indication information in the prior art from the second indication information in the embodiment of the present application. Of course, the embodiment of the present application may also distinguish the second instruction information of the prior art from the second instruction information of the embodiment of the present application in other ways.

Exemplarily, the DCI carrying the second indication information may include an N-bit distinguishing field to distinguish the second indication information of the present application from the second indication information in the prior art.

As another example, the network device may send the first information to the terminal device, where the first information includes a parameter that distinguishes the second indication information of the prior art.

It should be understood that, in the embodiments of the present application, “first”, “second”, and “third” are only used to distinguish different objects, but do not limit the scope of the embodiments of the present application.

In the embodiment of the present application, the network device sends the time-frequency resource set to the terminal device, and then indicates the occupied time-frequency resource to the terminal device based on the time-frequency resource set. The thus-occupied time-frequency resource is actually the time occupied Frequency resources, thereby improving the accuracy of indicating that time-frequency resources are occupied.

FIG. 5 is a schematic flowchart of a communication method 500 according to an embodiment of the present application. The method 500 may be executed by a terminal device, and may include at least part of the following content.

In 510, the network device sends the first instruction information to the terminal device.

The first indication information is used to indicate a time-frequency resource set, and the time-frequency resource set includes at least one time-frequency resource.

In 520, the network device sends the second instruction information to the terminal device.

The second indication information is used to indicate occupied time-frequency resources in the time-frequency resource set.

Optionally, in the embodiment of the present application, the second indication information may indicate the occupied time-frequency resources in the time-frequency resource set by means of bit mapping.

Optionally, in the embodiment of the present application, the second indication information may indicate a time-frequency resource in which at least a part of the time-frequency resource in the time-frequency resource set is occupied.

Optionally, in the embodiment of the present application, the method 500 may further include: the network device sends third instruction information to the terminal device, where the third instruction information is used to indicate a time window, and the time window includes a time-frequency resource set At least part of the time-frequency resources.

Optionally, in the embodiment of the present application, the time window may be a first time period before a time unit from which the network device sends the second instruction information.

Optionally, in the embodiment of the present application, the time window may be divided based on the number of time-frequency resources.

Optionally, in the embodiment of the present application, the time window may be divided based on the absolute time.

Optionally, in the embodiment of the present application, the number of time-frequency resources in the first time window is different from the number of time-frequency resources in the second time window, where the first time window is the first A time window corresponding to the two indication information, and the second time window is a time window corresponding to the second indication information sent by the network device at least once before.

Optionally, in the embodiment of the present application, the number of bits of the second indication information sent by the network device at different times is the same.

Optionally, in the embodiment of the present application, the number of bits of the second instruction information sent by the network device at any time is a first value, and the first value may correspond to the second instruction information sent by the network device at different times. The maximum number of time-frequency resources in the time window.

Optionally, in the embodiment of the present application, the second indication information is scrambled by using an RNTI other than the INT-RNTI.

Optionally, in the embodiment of the present application, the second indication information may be carried in physical layer signaling.

Optionally, in the embodiment of the present application, the first indication information may be carried in RRC signaling.

It should be understood that although the

methods

200 and 500 are respectively described above, this does not mean that the

methods

200 and 500 are independent, and the descriptions of the methods may refer to each other. In the case of no contradiction, the alternatives of each method can be used in combination. For example, the description in method 200 may apply to method 500.

It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not deal with the embodiments of the present application. The implementation process constitutes any limitation.

The communication method according to the embodiment of the present application is described in detail above. The communication device according to the embodiment of the present application will be described below with reference to FIGS. 6 to 8. The technical features described in the method embodiment are applicable to the following device embodiments.

FIG. 6 shows a schematic block diagram of a terminal device 600 according to an embodiment of the present application. As shown in FIG. 6, the terminal device 600 includes:

The communication unit 610 is configured to receive first indication information sent by a network device, where the first indication information is used to indicate a time-frequency resource set, where the time-frequency resource set includes at least one time-frequency resource;

The communication unit 610 is further configured to receive second instruction information sent by the network device, where the second instruction information is used to indicate occupied time-frequency resources in the time-frequency resource set.

Optionally, in the embodiment of the present application, the second indication information indicates the occupied time-frequency resources in the time-frequency resource set by means of bit mapping.

Optionally, in the embodiment of the present application, the second indication information indicates a time-frequency resource in which at least a part of the time-frequency resource in the time-frequency resource set is occupied. The terminal device 600 further includes a processing unit 610 for determining a time window , The time window includes at least part of the time-frequency resources in the time-frequency resource set;

The processing unit 610 is further configured to determine the occupied time-frequency resources in the time-frequency resource set based on the second indication information and at least part of the time-frequency resources in the time-frequency resource set included in the time window.

Optionally, in the embodiment of the present application, the communication unit 610 is further configured to receive third instruction information sent by a network device, where the third instruction information is used to indicate a time window.

Optionally, in the embodiment of the present application, the time window is a first time period before a time unit from which the communication unit 610 receives the second indication information.

Optionally, in the embodiment of the present application, the time window is divided based on the number of time-frequency resources.

Optionally, in the embodiment of the present application, the time window is divided based on the absolute time.

Optionally, in the embodiment of the present application, the number of time-frequency resources in the first time window is different from the number of time-frequency resources in the second time window. The first time window is the current time received by the communication unit 610. The time window corresponding to the second instruction information of the. The second time window is a time window corresponding to the second instruction information received by the communication unit 620 at least once before.

Optionally, in the embodiment of the present application, the number of bits of the second indication information received by the communication unit 610 at different times is the same.

Optionally, in the embodiment of the present application, the number of bits of the second instruction information received by the communication unit 610 at any time is a first value, and the first value is a place of the second instruction information received by the communication unit 610 at a different time. The maximum number of time-frequency resources in the corresponding time window.

Optionally, in the embodiment of the present application, the second indication information is carried in physical layer signaling.

Optionally, in the embodiment of the present application, the first indication information is carried in RRC signaling.

It should be understood that the terminal device 600 may correspond to the terminal device in the method 200, and corresponding operations of the terminal device in the method 200 may be implemented. For brevity, details are not described herein again.

FIG. 7 shows a schematic block diagram of a network device 700 according to an embodiment of the present application. As shown in FIG. 7, the network device 700 includes:

The communication unit 710 is configured to send first indication information to the terminal device, where the first indication information is used to indicate a time-frequency resource set, where the time-frequency resource set includes at least one time-frequency resource;

The communication unit 710 is further configured to send second instruction information to the terminal device, where the second instruction information is used to indicate occupied time-frequency resources in the time-frequency resource set.

Optionally, in the embodiment of the present application, the second indication information indicates a time-frequency resource in which at least a part of the time-frequency resource in the time-frequency resource set is occupied.

Optionally, in the embodiment of the present application, the communication unit 710 is further configured to send third instruction information to the terminal device, where the third instruction information is used to indicate a time window, and the time window includes at least a part of the time-frequency resource set. Time-frequency resources.

Optionally, in the embodiment of the present application, the time window is a first time period before the time unit from which the communication unit 710 sends the second instruction information.

Optionally, in the embodiment of the present application, the number of time-frequency resources in the first time window is different from the number of time-frequency resources in the second time window. The first time window is the current time sent by the communication unit 710. The time window corresponding to the second instruction information, and the second time window is a time window corresponding to the second instruction information sent at least once before the communication unit 710.

Optionally, in the embodiment of the present application, the number of bits of the second instruction information sent by the communication unit 710 at different times is the same.

Optionally, in the embodiment of the present application, the number of bits of the second instruction information sent by the communication unit at any time is a first value, and the first value is a time corresponding to the second instruction information sent by the communication unit 710 at different times. The maximum number of time-frequency resources in the window.

It should be understood that the network device 700 may correspond to the network device in the method 500, and corresponding operations of the network device in the method 500 may be implemented. For brevity, details are not described herein again.

FIG. 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application. The communication device 800 shown in FIG. 8 includes a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 8, the communication device 800 may further include a memory 820. The processor 810 may call and run a computer program from the memory 820 to implement the method in the embodiment of the present application.

The memory 820 may be a separate device independent of the processor 810, or may be integrated in the processor 810.

Optionally, as shown in FIG. 8, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, and specifically, may send information or data to other devices, or receive other Information or data sent by the device.

The transceiver 830 may include a transmitter and a receiver. The transceiver 830 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 800 may specifically be a network device according to an embodiment of the present application, and the communication device 800 may implement a corresponding process implemented by a network device in each method of the embodiments of the present application. .

Optionally, the communication device 800 may specifically be a terminal device in the embodiment of the present application, and the communication device 800 may implement a corresponding process implemented by the terminal device in each method in the embodiments of the present application. For brevity, details are not described herein again. .

FIG. 9 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 900 shown in FIG. 9 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 9, the chip 900 may further include a memory 920. The processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.

The memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.

Optionally, the chip 900 may further include an input interface 930. The processor 910 may control the input interface 930 to communicate with other devices or chips. Specifically, the processor 910 may obtain information or data sent by other devices or chips.

Optionally, the chip 900 may further include an output interface 940. The processor 910 may control the output interface 940 to communicate with other devices or chips. Specifically, the processor 910 may output information or data to the other devices or chips.

Optionally, the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For brevity, details are not described herein again.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, details are not described herein again.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-level chip, a system chip, a chip system or a system-on-chip.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip and has a signal processing capability. In the implementation process, each step of the foregoing method embodiment may be completed by using an integrated logic circuit of hardware in a processor or an instruction in a form of software. The above processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (Field, Programmable Gate Array, FPGA), or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the foregoing method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory. The volatile memory may be Random Access Memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) And direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (Double SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct RAMbus RAM, DR RAM) and so on. That is, the memories in the embodiments of the present application are intended to include, but not limited to, these and any other suitable types of memories.

FIG. 10 is a schematic block diagram of a communication system 1000 according to an embodiment of the present application. As shown in FIG. 10, the communication system 1000 includes a terminal device 1010 and a network device 1020.

The terminal device 1010 may be used to implement the corresponding functions implemented by the terminal device in the foregoing method, and the network device 1020 may be used to implement the corresponding functions implemented by the network device in the foregoing method. For brevity, details are not described herein again. .

An embodiment of the present application further provides a computer-readable storage medium for storing a computer program.

Optionally, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For simplicity, here No longer.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. No longer.

An embodiment of the present application further provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instruction causes the computer to execute a corresponding process implemented by the terminal device in each method in the embodiment of the present application. More details.

Optionally, the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instruction causes a computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. More details.

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

Optionally, the computer program may be applied to the terminal device in the embodiment of the present application. When the computer program is run on a computer, the computer is caused to execute a corresponding process implemented by the terminal device in each method in the embodiment of the present application. , Will not repeat them here.

Optionally, the computer program may be applied to a network device in the embodiment of the present application. When the computer program is run on a computer, the computer is caused to execute a corresponding process implemented by the network device in each method in the embodiment of the present application. , Will not repeat them here.

Those of ordinary skill in the art may realize that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

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

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.

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

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory) ROM, random access memory (Random Access Memory, RAM), magnetic disks or optical disks and other media that can store program codes .

The above is only a specific implementation of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A communication method, characterized in that the method includes:

Receiving, by a terminal device, first indication information sent by a network device, where the first indication information is used to indicate a time-frequency resource set, and the time-frequency resource set includes at least one time-frequency resource;

Receiving, by the terminal device, second instruction information sent by the network device, where the second instruction information is used to indicate occupied time-frequency resources in the time-frequency resource set.
The method according to claim 1, wherein the second indication information indicates a occupied time-frequency resource in the time-frequency resource set in a bit mapping manner.
The method according to claim 1 or 2, wherein the second indication information indicates a time-frequency resource in which at least part of the time-frequency resource in the time-frequency resource set is occupied, and the method further comprises:

Determining, by the terminal device, a time window, where the time window includes at least part of the time-frequency resources in the time-frequency resource set;

Determining, by the terminal device, the occupied time-frequency resources in the time-frequency resource set based on the second indication information and at least a part of the time-frequency resources in the time-frequency resource set included in the time window.
The method according to claim 3, further comprising:

Receiving, by the terminal device, third indication information sent by the network device, where the third indication information is used to indicate the time window.
The method according to claim 3 or 4, wherein the time window is a first time period before a time unit from the time unit when the second instruction information is received by the terminal device.
The method according to any one of claims 3 to 5, wherein the time window is divided based on a quantity of time-frequency resources.
The method according to any one of claims 3 to 5, wherein the time window is divided based on an absolute time.
The method according to claim 7, wherein the number of time-frequency resources in the first time window is different from the number of time-frequency resources in the second time window, wherein the first time window is the terminal A time window corresponding to the second instruction information currently received by the device, and the second time window is a time window corresponding to the second instruction information received at least once by the terminal device.
The method according to claim 7 or 8, wherein the number of bits of the second indication information received by the terminal device at different times is the same.
The method according to any one of claims 7 to 9, wherein the number of bits of the second instruction information received by the terminal device at any time is a first value, and the first value is the terminal The maximum number of time-frequency resources in the time window corresponding to the second indication information received by the device at different times.
The method according to any one of claims 1 to 10, wherein the second indication information is scrambled by using an RNTI other than the preemption indication-the wireless network temporary identifier INT-RNTI.
The method according to any one of claims 1 to 11, wherein the second indication information is carried in physical layer signaling.
The method according to any one of claims 1 to 12, wherein the first indication information is carried in radio resource control RRC signaling.
A communication method, characterized in that the method includes:

The network device sends first instruction information to the terminal device, where the first instruction information is used to indicate a time-frequency resource set, and the time-frequency resource set includes at least one time-frequency resource;

The network device sends second instruction information to the terminal device, where the second instruction information is used to indicate occupied time-frequency resources in the time-frequency resource set.
The method according to claim 14, wherein the second indication information indicates a occupied time-frequency resource in the time-frequency resource set in a bit mapping manner.
The method according to claim 14 or 15, wherein the second indication information indicates a time-frequency resource in which at least a part of the time-frequency resource in the time-frequency resource set is occupied.
The method according to claim 16, further comprising:

The network device sends third instruction information to the terminal device, where the third instruction information is used to indicate a time window, and the time window includes at least part of the time-frequency resources in the time-frequency resource set.
The method according to claim 17, wherein the time window is a first time period before a time unit from which the network device sends the second indication information.
The method according to claim 17 or 18, wherein the time window is divided based on a quantity of time-frequency resources.
The method according to claim 17 or 18, wherein the time window is divided based on absolute time.
The method according to claim 20, wherein the number of time-frequency resources in the first time window is different from the number of time-frequency resources in the second time window, wherein the first time window is the network The time window corresponding to the second instruction information sent by the device at the current time, and the second time window is a time window corresponding to the second instruction information sent by the network device at least once before.
The method according to claim 20 or 21, wherein the number of bits of the second indication information sent by the network device at different times is the same.
The method according to any one of claims 20 to 22, wherein the number of bits of the second instruction information sent by the network device at any time is a first value, and the first value is the network device The maximum number of time-frequency resources in a time window corresponding to the second instruction information sent at different times.
The method according to any one of claims 14 to 23, wherein the second instruction information is scrambled by using a wireless network temporary identifier RNTI other than the preemption indicator-the wireless network temporary identifier INT-RNTI.
The method according to any one of claims 14 to 24, wherein the second indication information is carried in physical layer signaling.
The method according to any one of claims 14 to 25, wherein the first indication information is carried in radio resource control RRC signaling.
A terminal device, comprising:

A communication unit, configured to receive first indication information sent by a network device, where the first indication information is used to indicate a time-frequency resource set, where the time-frequency resource set includes at least one time-frequency resource;

The communication unit is further configured to receive second instruction information sent by the network device, where the second instruction information is used to indicate occupied time-frequency resources in the time-frequency resource set.
The terminal device according to claim 27, wherein the second indication information indicates a occupied time-frequency resource in the time-frequency resource set in a bit mapping manner.
The terminal device according to claim 27 or 28, wherein the second indication information indicates a time-frequency resource in which at least part of the time-frequency resource in the time-frequency resource set is occupied, and the terminal device further comprises:

A processing unit, configured to determine a time window, where the time window includes at least part of the time-frequency resources in the time-frequency resource set;

The processing unit is further configured to determine the occupied time-frequency resources in the time-frequency resource set based on the second indication information and at least part of the time-frequency resources in the time-frequency resource set included in the time window. .
The terminal device according to claim 29, wherein the communication unit is further configured to:

Receiving third instruction information sent by the network device, where the third instruction information is used to indicate the time window.
The terminal device according to claim 29 or 30, wherein the time window is a first time period before a time unit from the time unit when the second indication information is received by the communication unit.
The terminal device according to any one of claims 29 to 31, wherein the time window is divided based on a quantity of time-frequency resources.
The terminal device according to any one of claims 29 to 31, wherein the time window is divided based on an absolute time.
The terminal device according to claim 33, wherein the number of time-frequency resources in the first time window is different from the number of time-frequency resources in the second time window, and the first time window is the A time window corresponding to the second instruction information currently received by the communication unit, and the second time window is a time window corresponding to the second instruction information received at least once before the communication unit.
The terminal device according to claim 33 or 34, wherein the number of bits of the second instruction information received by the communication unit at different times is the same.
The terminal device according to any one of claims 33 to 35, wherein the number of bits of the second instruction information received by the communication unit at any time is a first value, and the first value is the first value The maximum number of time-frequency resources in the time window corresponding to the second indication information received by the communication unit at different times.
The terminal device according to any one of claims 27 to 36, wherein the second indication information is scrambled by an RNTI other than a preemption indication-a wireless network temporary identifier INT-RNTI.
The terminal device according to any one of claims 27 to 37, wherein the second indication information is carried in physical layer signaling.
The terminal device according to any one of claims 27 to 38, wherein the first indication information is carried in radio resource control RRC signaling.
A network device, comprising:

A communication unit, configured to send first indication information to a terminal device, where the first indication information is used to indicate a time-frequency resource set, where the time-frequency resource set includes at least one time-frequency resource;

The communication unit is further configured to send second instruction information to the terminal device, where the second instruction information is used to indicate occupied time-frequency resources in the time-frequency resource set.
The network device according to claim 40, wherein the second indication information indicates a time-frequency resource occupied in the time-frequency resource set by a bit mapping manner.
The network device according to claim 40 or 41, wherein the second indication information indicates a time-frequency resource in which at least a part of the time-frequency resource in the time-frequency resource set is occupied.
The network device according to claim 42, wherein the communication unit is further configured to:

Sending third instruction information to the terminal device, where the third instruction information is used to indicate a time window, and the time window includes at least a part of the time-frequency resource in the time-frequency resource set.
The network device according to claim 43, wherein the time window is a first time period before a time unit from which the communication unit sends the second instruction information.
The network device according to claim 43 or 44, wherein the time window is divided based on a number of time-frequency resources.
The network device according to claim 43 or 44, wherein the time window is divided based on an absolute time.
The network device according to claim 46, wherein the number of time-frequency resources in the first time window is different from the number of time-frequency resources in the second time window, wherein the first time window is the The time window corresponding to the second instruction information currently sent by the communication unit, and the second time window is a time window corresponding to the second instruction information sent at least once before by the communication unit.
The network device according to claim 46 or 47, wherein the number of bits of the second instruction information sent by the communication unit at different times is the same.
The network device according to any one of claims 46 to 48, wherein the number of bits of the second instruction information sent by the communication unit at any time is a first value, and the first value is the communication The maximum number of time-frequency resources in the time window corresponding to the second indication information sent by the unit at different times.
The network device according to any one of claims 40 to 49, wherein the second indication information is scrambled by using an RNTI other than a preemption indication-a wireless network temporary identifier INT-RNTI.
The network device according to any one of claims 40 to 50, wherein the second indication information is carried in physical layer signaling.
The network device according to any one of claims 40 to 51, wherein the first indication information is carried in radio resource control RRC signaling.
A terminal device, comprising: a processor and a memory, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, and execute the instructions in claims 1 to 13. The method of any one.
A network device, comprising: a processor and a memory, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, and execute the instructions in claims 14 to 26. The method of any one.
A chip, comprising: a processor, configured to call and run a computer program from a memory, so that a device having the chip installed executes the method according to any one of claims 1 to 13.
A chip, comprising: a processor, configured to call and run a computer program from a memory, so that a device having the chip installed executes the method according to any one of claims 14 to 26.
A computer-readable storage medium, which is used for storing a computer program that causes a computer to execute the method according to any one of claims 1 to 13.
A computer-readable storage medium, which is used to store a computer program that causes a computer to execute the method according to any one of claims 14 to 26.
A computer program product, comprising computer program instructions that cause a computer to execute the method according to any one of claims 1 to 13.
A computer program product, comprising computer program instructions that cause a computer to execute the method according to any one of claims 14 to 26.
A computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 13.
A computer program, wherein the computer program causes a computer to execute the method according to any one of claims 14 to 26.