CN111886912B

CN111886912B - Communication method, terminal equipment and network equipment

Info

Publication number: CN111886912B
Application number: CN201880090967.XA
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-09-27
Filing date: 2018-09-27
Publication date: 2022-01-11
Anticipated expiration: 2038-09-27
Also published as: TW202041072A; CN111886912A; WO2020061950A1

Abstract

The embodiment of the application relates to a communication method, terminal equipment and network equipment, wherein the method comprises the following steps: the method comprises the steps that terminal equipment receives first indication information sent by network equipment, wherein the first indication information is used for indicating a time-frequency resource set, and the time-frequency resource set comprises at least one time-frequency resource; and the terminal equipment receives second indication information sent by the network equipment, wherein the second indication information is used for indicating occupied time frequency resources in the time frequency resource set. The communication method, the terminal device and the network device in the embodiment of the application can improve the accuracy of indicating that the time frequency resource is occupied.

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

New Radio (NR) systems introduce Ultra-Reliable and Low-Latency Communications (URLLC), which is characterized by Ultra-high reliability (e.g., 99.999%) transmissions within an extreme time delay (e.g., 1 ms). In order to achieve the goal, a Preemption mechanism (Preemption) is introduced in the downlink, that is, during the transmission of Enhanced Mobile Broadband (eMBB) service, URLLC service may be inserted. In order to reduce the influence of the URLLC service on the eMBB service, a 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 existing method for indicating that the time-frequency resource is occupied has low indication accuracy.

Disclosure of Invention

The embodiment of the application provides a communication method, terminal equipment and network equipment, which can improve the accuracy of indicating that time-frequency resources are occupied.

In a first aspect, a communication method is provided, the method including: the method comprises the steps that terminal equipment receives first indication information sent by network equipment, wherein the first indication information is used for indicating a time-frequency resource set, and the time-frequency resource set comprises at least one time-frequency resource;

and the terminal equipment receives second indication information sent by the network equipment, wherein the second indication information is used for indicating occupied time frequency resources in the time frequency resource set.

In a second aspect, a communication method is provided, the method comprising: the method comprises the steps that network equipment sends first indication information to terminal equipment, wherein the first indication information is used for indicating a time-frequency resource set, and the time-frequency resource set comprises at least one time-frequency resource;

and the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating occupied time frequency resources in the time frequency resource set.

In a third aspect, a terminal device is provided, configured to perform the method in the first aspect or each implementation manner thereof.

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

In a fourth aspect, a network device is provided for performing the method of the second aspect or its implementation manners.

In particular, the network device comprises functional modules for performing the methods of the second aspect or its implementations described above.

In a fifth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.

In a sixth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of the second aspect or each implementation mode thereof.

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

Specifically, the chip includes: a processor configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method in any one of the first aspect to the second aspect or the implementation manners thereof.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any one of the first to second aspects or implementations thereof.

A tenth aspect provides a computer program that, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

According to the technical scheme, the network equipment sends the time frequency resource set to the terminal equipment, and then indicates occupied time frequency resources to the terminal equipment based on the time frequency resource set, so that the indicated occupied time frequency resources are actually occupied time frequency resources, and therefore the accuracy of indicating that the time frequency resources are occupied can be improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

Fig. 2 is a schematic flow chart of a communication method provided in an embodiment of the present application.

Fig. 3 is a schematic diagram for indicating that a time-frequency resource is occupied according to an embodiment of the present disclosure.

FIG. 4 is another schematic diagram for indicating that a time-frequency resource is occupied according to an embodiment of the present disclosure.

Fig. 5 is a schematic flow chart of a communication method provided in an embodiment of the present application.

Fig. 6 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 7 is a schematic block diagram of a network device provided in an embodiment of the present application.

Fig. 8 is a schematic block diagram of a communication device provided in an embodiment of the present application.

Fig. 9 is a schematic block diagram of a chip provided in an embodiment of the present application.

Fig. 10 is a schematic block diagram of a communication system provided in an embodiment of the present application.

Detailed Description

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, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile Communication (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) Communication System, or a 5G System.

Illustratively, a 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 referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. In an embodiment, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or via another data network connection; and/or via a Wireless interface connection, e.g., via a connection to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or via a device of another terminal equipment arranged to receive/transmit communication signals; and/or via Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

In one embodiment, direct-to-Device (D2D) communication between end devices 120 is possible.

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

Fig. 1 exemplarily shows one network device and two terminal devices, and in one embodiment, the communication system 100 may include a plurality of network devices and each network device may include other numbers of terminal devices within a coverage area thereof, which is not limited in this embodiment of the present application.

In an embodiment, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a 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 the 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, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

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

The indication is mainly directed to unpredictable URLLC services, where the time-frequency resources occupied by the services are unpredictable, but most of the services are large-bandwidth transmission, and therefore, an indication mode of frequency domain coarse grain and time domain fine grain is adopted. Due to the fact that coarse-grained indication is adopted in the frequency domain, the indicated occupied time frequency resource bandwidth may be larger or smaller than the actually occupied time frequency resource bandwidth, and therefore the accuracy of the indication mode is low.

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

Fig. 2 is a schematic flow chart diagram of a communication method 200 according to an embodiment of the present application. The method 200 may be performed by a terminal device and may include at least some of the following.

It should be understood that the embodiments of the present application may be applicable to not only Acknowledgement (ACK)/Negative Acknowledgement (NACK) for semi-persistent/semi-static transmission, but also semi-persistent/semi-static downlink data transmission. Of course, the embodiments of the present application may also be applied to the uplink transmission scenario.

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

The first indication information is used for indicating a time frequency resource set, and the time frequency resource set comprises at least one time frequency resource. For convenience of description, in the embodiments of the present application, the terminal device is referred to as a first terminal device, and the time-frequency resource set is referred to as a first time-frequency resource set.

In an embodiment of the present application, the first set of time-frequency resources may represent a set of time-frequency resources that may be occupied.

In this embodiment, the time-frequency resources in the first set of time-frequency resources may be transmission opportunities. For example, bit 11000100 of the first indication information may represent 8 transmission opportunities, one bit corresponding to one transmission opportunity.

In one embodiment, the time-frequency resources in the first set of time-frequency resources may belong to time-frequency resources for transmission of at least one service by at least one terminal device.

For example, the time-frequency resource in the first set of time-frequency resources may be a resource belonging to a first service for transmission by the first terminal device, and at this time, the time-frequency resource in the first set of time-frequency resources may be occupied by a second service of the first terminal device, or occupied by the first service and/or the second service of the second terminal device.

Further exemplarily, the time-frequency resource in the first set of time-frequency resources may be a resource belonging to a second terminal device for transmitting the first service, and at this time, the time-frequency resource in the first set of time-frequency resources may be occupied by the first service and/or the second service of the first terminal device, or occupied by the second service of the second terminal device.

Further exemplarily, the time-frequency resources in the first set of time-frequency resources may be resources belonging to the first terminal device and the second terminal device for transmitting the first service, and at this time, the time-frequency resources in the first set of time-frequency resources may be occupied by the second service of the first terminal device and/or the second terminal device.

Wherein the second service is at least one service except 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.

In one embodiment, the granularity of the time-frequency Resource may be at a symbol level, and the granularity of the frequency-domain Resource may be at 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. Further illustratively, the frequency domain Resource of the time frequency Resource may be at least one Resource Block Group (RBG). Such as 1-2 RBGs.

In an embodiment, when the first time-frequency resource set includes a plurality of time-frequency resources, two adjacent time-frequency resources in the plurality of time-frequency resources may be continuous or discontinuous in a time domain, which is not specifically limited in this embodiment of the present application.

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 frequency resource 2 may be symbol 6 and symbol 7.

In the embodiment of the present application, the first indication information indicates a first set of time and frequency resources, which may be understood as follows as an example: the first indication information explicitly indicates a first set of time-frequency resources.

In one embodiment, the first indication information may indicate only the first set of time-frequency resources, or may indicate the first set of time-frequency resources and a second set of time-frequency resources, where the second set of time-frequency resources is at least one set of time-frequency resources other than the first set of time-frequency resources.

It can be seen that, when the first indication information indicates the first set of time-frequency resources and the second set of time-frequency resources, the network device may send only one first indication information to the terminal device, so as to indicate all sets of time-frequency resources.

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

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

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

The time domain position of each time frequency resource can be understood as the position of the time unit in which each time frequency resource is located. In one embodiment, the time unit referred to herein may be a subframe, a slot, a symbol, or a Short Transmission Timing Interval (sTTI). For example, the time-frequency resources are located at the 4 th slot and the 5 th slot in the time domain.

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

For another example, the first set of time-frequency resources configuration may include: the pattern of time-frequency resources is a sub-slot occupancy pattern {10101110111010111011} within 1 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 set of time-frequency resources according to other parameters indicated by the first indication information.

In one embodiment, the other parameter may be an index of the first set of time-frequency resources. The terminal device may determine a first set of time-frequency resources among the multiple sets of time-frequency resources according to the index.

For example, there are 3 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, respectively, and the index of the first time-frequency resource set is 1, the terminal device may determine the first time-frequency resource set according to the index 1.

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

In one embodiment, the first set of time frequency resources may be predefined. Preferably, the first set of time-frequency resources may be semi-statically configured, i.e. at least one time-frequency resource in the first set of time-frequency resources may be a semi-static resource.

For example, at least one time-frequency resource in the first set of time-frequency resources may be the same as a feedback resource of ACK/NACK corresponding to Scheduling Free transmission (Grant Free) or an allocation of a resource of Semi-Persistent Scheduling (SPS).

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

In one embodiment, the method may further comprise: and the terminal equipment receives the fourth indication information sent by the network equipment. Wherein the fourth indication information may be used to activate or deactivate time-frequency resources in the first set of time-frequency resources.

In an embodiment, the fourth indication information may be carried in a physical layer signaling or a Media Access Control (MAC) signaling. For example, the fourth indication Information may be carried in Downlink Control Information (DCI). For another example, the fourth indication information may be carried in a Common (Common) Physical Downlink Control Channel (PDCCH).

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

For example, the fourth indication information may activate the time-frequency resources in the first set of time-frequency resources by a bit "1", and deactivate the time-frequency resources in the first set of time-frequency resources by a bit "0".

Still exemplarily, the number of bits of the fourth indication information may be multiple, and if the multiple bits are the same, it indicates that the time-frequency resource in the first set of time-frequency resources is activated, and if at least two bits of the multiple bits are different, it indicates that the time-frequency resource in the first set of time-frequency resources is deactivated. For example, "000" indicates activation of a time-frequency resource in the first set of time-frequency resources, and "010" indicates deactivation of a time-frequency resource in the first set of time-frequency resources.

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

Exemplarily, if the fourth indication information includes the first parameter, it indicates that the time-frequency resources in the first set of time-frequency resources are activated; and if the fourth indication information does not comprise the first parameter, the deactivation of the time-frequency resources in the first time-frequency resource set is represented.

It should be noted that, in the embodiment of the present application, the first parameter is not specifically limited, and any parameter that can activate or deactivate the time-frequency resources 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 set of time-frequency resources; and/or the fourth indication information may include deactivation signaling, where the deactivation signaling may be used to deactivate a time-frequency resource in the first set of time-frequency resources.

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

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

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

In one embodiment, the activation signaling and the deactivation signaling may be transmitted through the same DCI format. As an example, the DCI format may include an activation signaling field with N bits, where the N bits are all 1 to indicate activation of a time-frequency resource in the first set of time-frequency resources, and the N bits are all 0 to indicate deactivation of the time-frequency resource in the first set of time-frequency resources. Wherein N is a positive integer.

In the embodiment of the present application, the effective time of the activation signaling or the deactivation signaling may be preset or indicated to the terminal device by the network device through signaling. For example, the network device may configure the effective time of the activation signaling to be p time units through the high-level signaling, and the terminal device may activate the time-frequency resource in the first time-frequency resource set occurring at time unit n + p and later when receiving the activation signaling in time unit n. For another example, the network device may configure the effective time of the deactivation signaling to be q time units through a high-level signaling, and the terminal device may deactivate the time-frequency resource in the first time-frequency resource set occurring in time unit n + q and later when receiving the deactivation signaling in time unit n.

It should be understood that, in the embodiment of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

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

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

Therefore, the network equipment indicates the actually occupied time frequency resource to the terminal equipment based on the probably occupied time frequency resource, so that the occupied time frequency resource indicated by the network equipment is the actually occupied time frequency resource, and the accuracy of indicating that the resource is occupied can be improved.

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

In this embodiment of the application, the second indication information may indicate occupied time-frequency resources in the first set of time-frequency resources in a bit mapping manner. The bit mapping manner may be understood as that bits of the second indication information correspond to time-frequency resources in the first set of time-frequency resources one to one.

In one embodiment, bits {1} may indicate that the time-frequency resources in the first set of time-frequency resources are occupied, and bits {0} indicate that the time-frequency resources in the first set of time-frequency resources are unoccupied. For example, there are 4 time-frequency resources in the first set of time-frequency resources, i.e. there are 4 time-frequency resources that may be occupied. The second indication information may indicate whether the 4 first time-frequency resources are actually occupied using {0010 }. It can be seen that the third first time frequency resource is occupied and the other first time frequency resources are unoccupied.

It should be understood that the bit "1" in the embodiment of the present application indicates that the time frequency resource is occupied, and the bit "0" indicates that the time frequency resource is unoccupied, which is only for helping a person skilled in the art to better understand the embodiment of the present invention, and does not limit the scope of the embodiment of the present application. Of course, in the embodiment of the present application, a bit "0" may also be used to indicate that the time frequency resource is occupied, and a bit "1" indicates that the time frequency resource is not occupied, or other parameters may also be used to indicate whether the time frequency resource is occupied.

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

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

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

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

The time window may be represented as a time range, and the time-frequency resource in the time window may be the time-frequency resource 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 one to one.

In one embodiment, the time window may be protocol agreed.

In one embodiment, the time window may be determined by the network device. In this case, the method 200 may further include: and the network equipment sends third indication information to the terminal equipment, wherein the third indication can be used for indicating the time window.

In this embodiment of the present application, the network device may send the first indication information, the second indication information, and the third indication information to the terminal device together, and the network device may also send the first indication information, the second indication information, and the third indication information respectively.

Typically, the network device may transmit the first indication information and the third indication information together to the terminal device, and transmit the second indication information independently 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 when the second indication information is received from the terminal device.

In one embodiment, the division of the time window may be based on absolute time. For example, 5ms is a time window, and the first time period is 5 ms. For another example, the first time period may be 1-2 time slots before the time when the terminal device receives the second indication information, or may be a fixed window, such as a radio frame.

In one embodiment, the division of the time window may be 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 10 time frequency resources are located. In this case, the lengths of the different time windows may be different.

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

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

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

In the embodiment of the 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 the time frequency resources, the number of the time frequency resources in the time window corresponding to the second indication information received by the terminal device at different times is the same, and in this case, the number of bits of the second indication information received by the terminal device at different times is always the same.

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

For example, 5ms is a time window, 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. And the terminal equipment receives the second indication information at a second moment, wherein 5ms before the second moment is a second time window, and the second time window comprises 2 time-frequency resources.

In this case, the bit number of the second indication information received by the terminal device at any time is a first value, where the first value is a value of the maximum number of time-frequency resources in a time window corresponding to the second indication information received by the terminal device at different times.

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

In one embodiment, 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 be placeholders. Illustratively, a placeholder may be represented using a "0".

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

The resource occupation indication of the embodiment of the present application is illustrated in conjunction with fig. 3 and 4.

Fig. 3 is an indication of occupation of periodic time-frequency resources. The network device configures 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 condition is indicated based on the sub-slot granularity, wherein 1ms comprises 4 sub-slots, and 2ms comprises 8 sub-slots. The network device indicates the time-frequency resource {1010101010101010} possibly occupied by the semi-static transmission by 8 bits, and configures the time-frequency resource to the terminal device through high-layer signaling. And the network device indicates to the terminal device an occupancy status for the semi-static resource based on the configuration. If the time-frequency resource filled with oblique lines is actually occupied and the semi-static resource without filling is not occupied, the bit of the second indication information is {0001}, which indicates that the last semi-static resource of the 4 semi-static resources which may be occupied is occupied.

Fig. 4 is an indication of occupation of aperiodic time-frequency resources. The network equipment configures aperiodic time frequency resources for downlink transmission, and indicates the time frequency resources {1000101010101010} which may be occupied by semi-static transmission through 8 bits. The network equipment is configured to the terminal equipment through high-level signaling. And the network device indicates to the terminal device an occupancy status for the semi-static resource based on the configuration. If the resource filled with oblique lines is actually occupied, the semi-static resource without filling is not occupied. Since the number of semi-static resources within 2 time windows is different, a maximum of 4 is used. And for the condition of less semi-static resource number, adopting redundant occupation. As shown in fig. 4, the bits of the second indication information have 4 bits, the first three bits are used to indicate whether the semi-static resource is occupied, and the last bit is occupied by redundancy. Therefore, the bit of the second indication information is {0010}, which indicates that the last semi-static resource of the 3 semi-static resources that may be occupied is occupied.

In this embodiment, as an example, the second indication information may be scrambled with an RNTI other than the preemption Indication (INT) -Radio Network Temporary Identity (RNTI).

It should be noted that, in the prior art, the second indication information, that is, the preemption indication signaling, is scrambled by using INT-RNTI, and the second indication information in the embodiment of the present application is scrambled by using RNTI other than INT-RNTI, so that after receiving the second indication information, the terminal device can distinguish the second indication information in the prior art from the second indication information in the embodiment of the present application. Of course, the second indication information in the prior art may be distinguished from the second indication information in the embodiment of the present application in other manners.

Illustratively, the DCI carrying the second indication information may include an N-bit distinguishing region 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 transmit first information including a parameter that distinguishes second indication information of the related art to the terminal device.

It should be understood that, in the embodiments of the present application, the terms "first", "second", and "third", etc. are used merely to distinguish different objects, and do not limit the scope of the embodiments of the present application.

According to the time frequency resource allocation method and the time frequency resource allocation device, the network equipment sends the time frequency resource set to the terminal equipment, the occupied time frequency resource is indicated to the terminal equipment based on the time frequency resource set, the indicated occupied time frequency resource is the actually occupied time frequency resource, and therefore the accuracy of indicating that the time frequency resource is occupied can be improved.

Fig. 5 is a schematic flow chart diagram of a communication method 500 according to an embodiment of the present application. The method 500 may be performed by a terminal device and may include at least some of the following.

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

The first indication information is used for indicating a time frequency resource set, and the time frequency resource set comprises at least one time frequency resource.

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

And the second indication information is used for indicating occupied time frequency resources in the time frequency resource set.

In this embodiment of the application, the second indication information may indicate occupied time-frequency resources in the time-frequency resource set in a bit mapping manner.

In this embodiment of the application, the second indication information may indicate that at least some of the time frequency resources in the set of time frequency resources are occupied.

In an embodiment of the present application, the method 500 may further include: and the network equipment sends third indication information to the terminal equipment, wherein the third indication information is used for indicating a time window, and the time window comprises at least part of time frequency resources in the time frequency resource set.

In the embodiment of the present application, the time window may be a first time period before a time unit when the network device transmits the second indication information.

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

In embodiments of the present application, the time window may be divided based on absolute time.

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

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

In this embodiment of the present application, the bit number of the second indication information sent by the network device at any time is a first value, where the first value may be the maximum time-frequency resource number in a time window corresponding to the second indication information sent by the network device at different times.

In an embodiment of the application, the second indication information is scrambled with an RNTI other than the INT-RNTI.

In this embodiment, the second indication information may be carried in physical layer signaling.

In this embodiment, the first indication information may be carried in RRC signaling.

It should be understood that while

methods

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

methods

200 and 500 are independent and that the descriptions of the respective methods may be referred to one another. Alternatives to the respective methods can be used in combination without contradiction. 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 sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

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

Fig. 6 shows a schematic block diagram of a terminal device 600 of an embodiment of the present application. As shown in fig. 6, the terminal apparatus 600 includes:

a communication unit 610, 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, and the time-frequency resource set includes at least one time-frequency resource;

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

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

In this embodiment of the application, the second indication information indicates that at least a part of time frequency resources in the time frequency resource set are occupied, and the terminal device 600 further includes: a processing unit, configured to determine a time window, where the time window includes at least part of time-frequency resources in a time-frequency resource set;

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

In this embodiment of the present application, the communication unit 610 is further configured to: and receiving third indication information sent by the network equipment, wherein the third indication information is used for indicating a time window.

In the embodiment of the present application, the time window is a first time period before the time unit when the communication unit 610 receives the second indication information.

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

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

In this embodiment of the application, the number of the time-frequency resources in the first time window is different from the number of the time-frequency resources in the second time window, where the first time window is a time window corresponding to the second indication information received by the communication unit 610 at the current time, and the second time window is a time window corresponding to the second indication information received by the communication unit 610 at least once before.

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.

In this embodiment of the present application, the bit number of the second indication information received by the communication unit 610 at any time is a first value, and the first value is the maximum time-frequency resource number in a time window corresponding to the second indication information received by the communication unit 610 at different times.

In the embodiment of the application, the second indication information is scrambled by using RNTI except INT-RNTI.

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

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, which are not described herein again for brevity.

Fig. 7 shows a schematic block diagram of a network device 700 of an embodiment of the application. As shown in fig. 7, the network device 700 includes:

a communication unit 710, configured to send first indication information to a terminal 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;

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

In an embodiment of the application, the second indication information indicates that at least some of the time frequency resources in the set of time frequency resources are occupied.

In this embodiment of the present application, the communication unit 710 is further configured to: and sending third indication information to the terminal equipment, wherein the third indication information is used for indicating a time window, and the time window comprises at least part of time frequency resources in the time frequency resource set.

In the embodiment of the present application, the time window is a first time period before the time unit when the communication unit 710 transmits the second indication information.

In this embodiment of the application, the number of the time-frequency resources in the first time window is different from the number of the time-frequency resources in the second time window, where the first time window is a time window corresponding to the second indication information currently sent by the communication unit 710, and the second time window is a time window corresponding to the second indication information sent by the communication unit 710 at least once before.

In the embodiment of the present application, the number of bits of the second indication information transmitted by the communication unit 710 at different times is the same.

In this embodiment of the present application, the bit number of the second indication information sent by the communication unit at any time is a first value, and the first value is the maximum time-frequency resource number in the time window corresponding to the second indication information sent by the communication unit 710 at different times.

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, which are not described herein again for brevity.

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 comprises 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.

In one embodiment, as shown in fig. 8, the communication device 800 may also include a memory 820. From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

In one embodiment, 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 transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 830 may include a transmitter and a receiver, among others. The transceiver 830 may further include one or more antennas.

In an embodiment, the communication device 800 may specifically be a network device in the embodiment of the present application, and the communication device 800 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, no further description is given here.

In an embodiment, 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 embodiment of the present application, and for brevity, no further description is given here.

Fig. 9 is a schematic structural diagram of a chip of 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.

In one embodiment, as shown in FIG. 9, chip 900 may also include memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

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

In one embodiment, the chip 900 may also include an input interface 930. The processor 910 may control the input interface 930 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

In one embodiment, the chip 900 may also include an output interface 940. The processor 910 may control the output interface 940 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

In an embodiment, the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement a corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

In an embodiment, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, no further description is given here.

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

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The 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 (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. 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 connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 10 is a schematic block diagram of a communication system 1000 provided in 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 configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 1020 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, no further description is provided here.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

In an embodiment, the computer-readable storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

In an embodiment, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables a computer to execute corresponding processes implemented by the network device in the methods in the embodiments of the present application, which are not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

In an embodiment, the computer program product may be applied to the terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

In an embodiment, the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instructions enable a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

In an embodiment, the computer program may be applied to the terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute corresponding processes implemented by the terminal device in the methods in the embodiment of the present application, and for brevity, details are not described here again.

In an embodiment, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, the method comprising:

the method comprises the steps that terminal equipment receives first indication information sent by network equipment, wherein the first indication information is used for indicating a time-frequency resource set, and the time-frequency resource set comprises at least one time-frequency resource;

the terminal device receives second indication information sent by the network device, wherein the second indication information is used for indicating occupied time frequency resources in part of time frequency resources of the time frequency resource set in a bit mapping mode, and other time frequency resources except the part of time frequency resources in the time frequency resource set are unoccupied;

the method further comprises the following steps:

the terminal equipment determines a time window, wherein the time window comprises the partial time frequency resources;

the terminal equipment determines occupied time frequency resources in the partial time frequency resources from the partial time frequency resources included in the time window based on the second indication information; the partial time frequency resources comprise all occupied time frequency resources indicated by the second indication information.

2. The method of claim 1, further comprising:

and the terminal equipment receives third indication information sent by the network equipment, wherein the third indication information is used for indicating the time window.

3. The method of claim 1, wherein the time window is a first time period before a time unit when the terminal device receives the second indication information.

4. The method of claim 1, wherein the time window is partitioned based on a number of time-frequency resources.

5. The method of claim 1, wherein the time window is partitioned based on absolute time.

6. The method according to claim 5, wherein the number of the time-frequency resources in a first time window is different from the number of the time-frequency resources in a second time window, wherein the first time window is a time window corresponding to the second indication information currently received by the terminal device, and the second time window is a time window corresponding to the second indication information received by the terminal device at least once before.

7. The method according to claim 5, wherein the number of bits of the second indication information received by the terminal device at different time is the same.

8. The method according to claim 5, wherein the bit number of the second indication information received by the terminal device at any time is a first value, and the first value is a maximum number of time-frequency resources in a time window corresponding to the second indication information received by the terminal device at different times.

9. The method according to any of claims 1 to 8, wherein the second indication information is scrambled with an RNTI other than a preemption indication-radio network temporary identity, INT-RNTI.

10. The method according to any of claims 1 to 8, wherein the second indication information is carried in physical layer signaling.

11. The method according to any of claims 1 to 8, wherein the first indication information is carried in radio resource control, RRC, signaling.

12. A method of communication, the method comprising:

the method comprises the steps that network equipment sends first indication information to terminal equipment, wherein the first indication information is used for indicating a time-frequency resource set, and the time-frequency resource set comprises at least one time-frequency resource;

the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating occupied time frequency resources in part of time frequency resources of the time frequency resource set in a bit mapping mode, and other time frequency resources except the part of time frequency resources in the time frequency resource set are unoccupied;

the method further comprises the following steps:

the network device sends third indication information to the terminal device, wherein the third indication information is used for indicating a time window, and the time window comprises the part of time-frequency resources, so that the terminal device determines occupied time-frequency resources in the part of time-frequency resources from the part of time-frequency resources included by the time window based on the second indication information; the partial time frequency resources comprise all occupied time frequency resources indicated by the second indication information.

13. The method of claim 12, wherein the time window is a first time period before a time unit when the network device transmits the second indication information.

14. The method of claim 12, wherein the time window is partitioned based on a number of time-frequency resources.

15. The method of claim 12, wherein the time window is partitioned based on absolute time.

16. The method according to claim 15, wherein a number of the time-frequency resources in a first time window is different from a number of the time-frequency resources in a second time window, wherein the first time window is a time window corresponding to second indication information currently sent by the network device, and the second time window is a time window corresponding to second indication information sent by the network device at least once before.

17. The method of claim 15, wherein the number of bits of the second indication information sent by the network device at different time is the same.

18. The method according to claim 15, wherein a bit number of the second indication information sent by the network device at any time is a first value, and the first value is a maximum number of time-frequency resources in a time window corresponding to the second indication information sent by the network device at different times.

19. The method according to any of claims 12 to 18, wherein the second indication information is scrambled with a radio network temporary identity, RNTI, other than the preemption indication-radio network temporary identity, INT-RNTI.

20. The method according to any of claims 12 to 18, wherein the second indication information is carried in physical layer signaling.

21. The method according to any of claims 12 to 18, wherein the first indication information is carried in radio resource control, RRC, signaling.

22. 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, and the time-frequency resource set includes at least one time-frequency resource;

the communication unit is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate occupied time-frequency resources in a part of time-frequency resources of the time-frequency resource set in a bit mapping manner, and other time-frequency resources in the time-frequency resource set except the part of time-frequency resources are unoccupied;

the terminal device further includes:

a processing unit, configured to determine a time window, where the time window includes the partial time-frequency resource;

the processing unit is further configured to determine, based on the second indication information, occupied time frequency resources in the part of time frequency resources included in the time window; the partial time frequency resources comprise all occupied time frequency resources indicated by the second indication information.

23. The terminal device of claim 22, wherein the communication unit is further configured to:

and receiving third indication information sent by the network equipment, wherein the third indication information is used for indicating the time window.

24. The terminal device according to claim 22, wherein the time window is a first time period before a time unit when the communication unit receives the second indication information.

25. The terminal device of claim 22, wherein the time window is partitioned based on a number of time-frequency resources.

26. The terminal device of claim 22, wherein the time window is partitioned based on absolute time.

27. The terminal device of claim 26, wherein a number of the time-frequency resources in a first time window is different from a number of the time-frequency resources in a second time window, wherein the first time window is a time window corresponding to the second indication information currently received by the communication unit, and the second time window is a time window corresponding to the second indication information received by the communication unit at least once before.

28. The terminal device according to claim 26, wherein the number of bits of the second indication information received by the communication unit at different times is the same.

29. The terminal device according to any one of claims 26 to 28, wherein a bit number of the second indication information received by the communication unit at any time is a first value, and the first value is a maximum number of time-frequency resources within a time window corresponding to the second indication information received by the communication unit at different times.

30. A terminal device according to any of claims 22 to 28, wherein the second indication information is scrambled with an RNTI other than the preemption indication-radio network temporary identity, INT-RNTI.

31. The terminal device according to any of claims 22 to 28, wherein the second indication information is carried in physical layer signaling.

32. The terminal device according to any of claims 22 to 28, wherein the first indication information is carried in radio resource control, RRC, signaling.

33. 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, and the time-frequency resource set includes at least one time-frequency resource;

the communication unit is further configured to send second indication information to the terminal device, where the second indication information is used to indicate occupied time-frequency resources in a part of time-frequency resources of the time-frequency resource set in a bit mapping manner, and other time-frequency resources in the time-frequency resource set except the part of time-frequency resources are unoccupied;

the communication unit is further configured to:

sending third indication information to the terminal device, where the third indication information is used to indicate a time window, where the time window includes the part of time-frequency resources, so that the terminal device determines occupied time-frequency resources in the part of time-frequency resources from the part of time-frequency resources included in the time window based on the second indication information; the partial time frequency resources comprise all occupied time frequency resources indicated by the second indication information.

34. The network device of claim 33, wherein the time window is a first time period before a time unit when the communication unit transmits the second indication information.

35. The network device of claim 33, wherein the time window is partitioned based on a number of time-frequency resources.

36. The network device of claim 33, wherein the time window is partitioned based on absolute time.

37. The network device of claim 36, wherein a number of the time-frequency resources in a first time window is different from a number of the time-frequency resources in a second time window, wherein the first time window is a time window corresponding to second indication information currently sent by the communication unit, and the second time window is a time window corresponding to second indication information sent by the communication unit at least once before.

38. The network device according to claim 36, wherein the number of bits of the second indication information transmitted by the communication unit at different time is the same.

39. The network device according to any one of claims 36 to 38, wherein a bit number of the second indication information sent by the communication unit at any time is a first value, and the first value is a maximum number of time-frequency resources within a time window corresponding to the second indication information sent by the communication unit at different times.

40. A network device according to any of claims 33-38, wherein the second indication information is scrambled with an RNTI other than the preemption indication-radio network temporary identity, INT-RNTI.

41. The network device of any of claims 33-38, wherein the second indication information is carried in physical layer signaling.

42. The network device according to any of claims 33 to 38, wherein the first indication information is carried in radio resource control, RRC, signaling.

43. A terminal device, comprising: a processor and a memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any one of claims 1 to 11.

44. A network device, comprising: a processor and a memory, the memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any one of claims 12 to 21.

45. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 11.

46. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 12 to 21.

47. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 11.

48. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 13 to 21.