CN109963335B

CN109963335B - Communication method and device

Info

Publication number: CN109963335B
Application number: CN201711411578.6A
Authority: CN
Inventors: 杨育波; 张鹏; 赵毅男
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-12-23
Filing date: 2017-12-23
Publication date: 2022-12-02
Anticipated expiration: 2037-12-23
Also published as: WO2019120303A1; CN109963335A

Abstract

The embodiment of the application discloses a communication method and a communication device, wherein the method comprises the following steps: when the terminal has URLLC service data to be sent, the URLLC service data can occupy part or all of time-frequency resources which are allocated to the terminal by network equipment and are used for transmitting eMBB service data; and the terminal sends first indication information to the network equipment, wherein the first indication information is used for indicating time-frequency resources occupied by URLLC service data. The first indication information may be carried in uplink control information or a sequence transmitted by the terminal. By the method, the URLLC service data can occupy the time-frequency resource of the same terminal for transmitting the eMBB service data, so that the reliability of URLLC service data transmission can be improved, and the transmission delay of the URLLC service data can be reduced.

Description

Communication method and device

Technical Field

The embodiment of the application relates to the field of communication, in particular to a communication method and device.

Background

The New Radio (NR) mobile communication system may support, but is not limited to, enhanced mobile broadband (eMBB) traffic, high-reliable and low-latency communications (URLLC) traffic, and massive machine type communications (mtc) traffic. Typical eMBB services may include: the services include ultra high definition video, augmented Reality (AR), virtual Reality (VR), and the like, and these services are mainly characterized by large transmission data volume and high transmission rate. Typical URLLC traffic may include: the main characteristics of the services are ultra-high reliability, low time delay, less transmission data volume and burstiness. Typical mtc traffic may include: the intelligent power distribution automation, smart city etc. main characteristics are that networking equipment quantity is huge, transmission data volume is less, data are insensitive to transmission delay, and these mMTC terminals need satisfy the demand of low-cost and very long standby time.

Different services have different requirements on mobile communication systems, and how to better support the data transmission requirements of multiple different services simultaneously is one of the technical problems to be solved by the current 5G mobile communication system.

The generation of data packets of URLLC traffic is bursty and random, and may not generate data packets for a long time or may generate multiple data packets for a short time. The data packets of URLLC traffic are in most cases small packets, e.g. 32 or 50 bytes, etc. The characteristics of the data packets of URLLC traffic can affect the way transmission resources are allocated in a communication system. Transmission resources include, but are not limited to, at least one of: time domain symbols, frequency domain resources, time frequency resources, codeword resources, and beam resources. Normally, the allocation of transmission resources is done by the base station. Aiming at the requirement of reducing time delay of URLLC service, NR introduces unlicensed (grant free) uplink transmission. The terminal can use the reserved uplink resource to perform uplink transmission under the condition that the uplink transmission resource allocated by the base station is not obtained, so that the transmission delay can be effectively reduced. However, as the amount of URLLC uplink traffic data to be transmitted increases, situations may arise where no unlicensed resources are available.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, and can

In a first aspect, a communication method is provided, including:

sending first indication information, where the first indication information is used to indicate first time-frequency resource information used for transmitting first service data, where the first service data and second service data are uplink service data of the same terminal, and the first time-frequency resource is part or all of a second time-frequency resource allocated to the second service data; and transmitting the first service data on the first time-frequency resource.

The method can enable the first service data, such as URLLC service data, to seize time-frequency resources of the same terminal for transmitting the second service data, such as eMBB service data, thereby improving the reliability of transmitting the first service data and reducing the transmission delay of the first service data.

In one possible design, the communication method of the first aspect may further include: and sending second indication information for indicating that the first indication information needs to be received. Through a two-stage indication mode, the complexity of blind detection of the first indication information by the network equipment can be reduced.

In one possible design, before the sending the first indication information, the communication method of the first aspect may further include: and receiving third indication information, wherein the third indication information is used for indicating that the terminal can preempt the second time-frequency resource which is allocated to the transmission of the second service data for transmitting the first service data. The terminal is enabled to preempt through the third indication information, so that the control of the network side can be realized, the resource scheduling is more flexible, and in addition, the customized strategy for the terminal can also be realized.

In a second aspect, a communication method is provided, including:

receiving first indication information, where the first indication information is used to indicate first time-frequency resource information used for transmitting first service data, where the first time-frequency resource is a part of a second time-frequency resource allocated to second service data, and the first service data and the second service data are uplink service data of the same terminal;

determining the first time-frequency resource according to the first indication information;

receiving the first traffic data on the first time-frequency resource.

In one possible design, the communication method according to the second aspect may further include: second indication information is received.

In one possible design, the communication method according to the second aspect may further include: and sending third indication information.

In a possible design of the communication method according to the first aspect and the second aspect, the first indication information is used to indicate first time-frequency resource information for transmitting the first service data, and the first indication information includes: the first indication information is used for indicating the number of time-frequency resource units of a first time-frequency resource; or, the first indication information is used to indicate the number of time-frequency resource units of the first time-frequency resource and information of the start position of the time-frequency resource.

In a possible design of the communication method according to the first aspect and the second aspect, the indicating information for indicating the first time-frequency resource information used for transmitting the first service data includes: the first indication information is used for indicating time domain starting position information and frequency domain position information of the first time-frequency resource; or, the first indication information is used to indicate time domain start position information, time domain end position information, and frequency domain position information of the first time-frequency resource.

In a possible design of the communication method according to the first aspect and the second aspect, the first indication information is further used to indicate a modulation and coding scheme MCS and a transport block size TBS of the first service data, so that signaling overhead for specifically indicating the MCS and the TBS can be reduced.

In a possible design of the communication method according to the first aspect and the second aspect, the first indication information is further used to indicate a subcarrier interval for transmitting the first service data, so that the system parameters of the first service data can be configured more flexibly.

In a possible design of the communication method according to the first aspect and the second aspect, the first indication information is carried in uplink control information or a first sequence.

In a possible design, the first indication information may use the second time frequency resource, or use a time frequency resource other than the second time frequency resource, which may be more flexible in implementation.

In a possible design of the communication method according to the first and second aspects, the second indication information is carried in a second sequence.

In a possible design of the communication method in the first aspect and the second aspect, the resource block RB in which the second sequence is located is a central RB of the second time-frequency resource.

In a third aspect, a communication device is also provided, which includes a module, a component, or a circuit for implementing the communication method of the first aspect.

In one possible design, the communication device of the third aspect may be a terminal or a chip usable for a terminal.

In a fourth aspect, a communication device is also provided, which includes a module, a component or a circuit for implementing the communication method of the second aspect.

In one possible design, the communication apparatus of the fourth aspect may be a network device or a chip usable for a network device.

In a fifth aspect, a communication system is further provided, which may include the communication apparatus of the third aspect and/or the communication apparatus of the fourth aspect.

In a sixth aspect, embodiments of the present application provide a computer storage medium having a program stored thereon, which, when executed, causes a computer to perform the method of the above aspect.

In a seventh aspect, there is also provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

Drawings

Fig. 1 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 2 is a schematic diagram of a sequence indicating a location of a time-frequency resource of first service data according to an embodiment of the present application;

FIG. 3 is a diagram illustrating a time-frequency resource location of sequence indicator first service data according to an embodiment of the present application;

fig. 4 is a schematic diagram of a sequence indicating a location of a time-frequency resource of first service data in an embodiment of the present application;

fig. 5 is a flowchart illustrating a communication method according to another embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

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

Detailed Description

Some of the terms referred to in this application are described below for the sake of clarity.

In the present application, the terms "network" and "system" are often used interchangeably, and the terms "device" and "apparatus" are also often used interchangeably, but those skilled in the art will understand the meaning. The "communication device" may be a chip (such as a baseband chip, or a data signal processing chip, or a general-purpose chip, etc.), a terminal, a base station, or other network equipment. A terminal is a device with communication capabilities and may include a handheld device with wireless communication capabilities, a vehicle mounted device, a wearable device, a computing device or other processing device connected to a wireless modem, etc. Terminals can be called different names in different networks, for example: user equipment, mobile station, subscriber unit, station, cellular telephone, personal digital assistant, wireless modem, wireless communication device, handheld device, laptop computer, cordless telephone, wireless local loop station, and the like. For convenience of description, the terminal is simply referred to in this application. A Base Station (BS), also called a base station device, is a device deployed in a radio access network to provide wireless communication functions. The call of the base station may be different in different radio access systems, for example, the base station in a Universal Mobile Telecommunications System (UMTS) network is called a node B (NodeB), the base station in a Long Term Evolution (LTE) network is called an evolved node B (eNB or eNodeB), the base station in a New Radio (NR) network is called a transmission point (TRP) or a next generation node B (gNB), or other calls may be used for base stations in other evolved networks. The present application is not limited thereto.

Some terms or concepts in the present application are explained below.

In the embodiment of the application, the time-frequency resources refer to resources corresponding to a determined time domain range and a determined frequency domain; specifically, the time domain resource may be in units of symbols or slots or subframes, and the frequency domain resource may be in units of subcarriers or resource blocks. The symbols herein are also referred to as time domain symbols, and in the present application, the symbols may be equivalent to time domain symbols if not specifically stated.

A Resource Block (RB) is typically the smallest unit of frequency domain resource allocation for a data channel. In NR, 12 subcarriers consecutive in the frequency domain are defined as one RB.

The time-frequency resource unit refers to a block of time-frequency resources, and may correspond to one or more symbols in a time domain, and may correspond to one or more subcarriers or RBs or RB groups in a frequency domain, for example, one or more subcarriers × 1 time-domain symbols may be used as the time-frequency resource unit, or one or more RBs × 1 time-domain symbols may be used as the time-frequency resource unit, or all or part of RB × 1 time-domain symbols allocated to the eMBB service may be used as the time-frequency resource unit. The time-frequency resource unit may be predefined, or may be configured through a higher layer signaling, for example, a Radio Resource Control (RRC) signaling, which is not limited in this embodiment of the present application.

The embodiment of the application provides a communication method, which can be applied to a scene that a first service data occupies a transmission resource allocated to a second service data in uplink transmission. The first service data and the second service data may be two different service data of the same terminal, for example, two different types of service data, or service data of the same type but with different quality of service (QoS) requirements, which is not limited in this embodiment of the present application.

The communication method relates to a first communication device and a second communication device, wherein the first communication device can be a terminal or a chip capable of being used for the terminal, and the second communication device can be a network device or a chip capable of being used for the network device. Further, the network device may be an access network device, such as a base station.

For convenience of explanation and understanding, in the following description, the first service data is URLLC service data, the second service data is eMBB service data, the first communication device is a terminal, and the second communication device is a network device. It can be understood that the first service data may be carried over a first data channel, and the second service data may be carried over a second data channel, so that the first time-frequency resource for transmitting the first service data may be understood as a first time-frequency resource of the first data channel, the second time-frequency resource allocated to the second service data may be understood as a second time-frequency resource allocated to the second data channel, and preemption of the second time-frequency resource by the first service data may be understood as preemption of the time-frequency resource of the second data channel by the first data channel.

For example, the communication method may be as shown in fig. 1, and the method may be applied to a time-frequency resource preemption scenario between two different types of service data of the same terminal, including:

s101, the terminal sends first indication information to the network equipment.

In a possible manner, when the terminal has URLLC service data to send to the network device, if the network device has allocated time-frequency resources to the eMBB service data of the terminal at this time, the URLLC service data may preempt the time-frequency resources allocated to the eMBB service data, that is, the URLLC service data is transmitted using part or all of the time-frequency resources already allocated to the eMBB service data.

In the embodiment of the present application, the time frequency resource allocated to the eMBB service data is referred to as a second time frequency resource. The first time-frequency resource used by the URLLC service data is a part or all of the second time-frequency resource, because it is a time-frequency resource allocated to the eMBB service data that is preempted, that is, the second time-frequency resource includes the first time-frequency resource. It is understood that the first time-frequency resource used by URLLC traffic data may also be referred to as the first time-frequency resource used for transmitting URLLC traffic data.

Then, when the preemption occurs, the first indication information is used to indicate the first time-frequency resource information.

The first indication information may indicate the first time-frequency resource in various manners, for example, the first indication information may be indicated by Uplink Control Information (UCI) or a sequence, which is not limited in this embodiment of the present application. It can be understood that the first time-frequency resource is indicated by means of UCI or a sequence, and it can also be understood that the first indication information is carried in the UCI or the sequence.

Optionally, the first indication information may be located in a defined time domain resource, where the defined time domain resource may be located from a k-last symbol (symbol) to a last symbol of a slot (slot) or a subframe (subframe) or a mini-slot (mini-slot) or a sub-slot (sub-slot) or a Transmission Time Interval (TTI), where k is smaller than the number of symbols of the slot (slot) or the subframe (subframe) or the mini-slot (mini-slot) or the sub-slot (sub-slot) or the Transmission Time Interval (TTI).

It is to be understood that the first indication information may use the second time frequency resource, and may also use time frequency resources other than the second time frequency resource.

Optionally, the first time-frequency resource information may include: and the time domain position and the frequency domain position information of the first time frequency resource in the second time frequency resource.

In one possible approach, the time domain location information of the first time-frequency resource includes: at least one of the time domain start position, the time domain end position, and the time domain length of the first time-frequency resource may also be time domain position information of the first time-frequency resource directly. It is to be understood that the time domain position of the first time frequency resource may be determined by any two or more of a time domain starting position, a time domain ending position, and a time domain length of the first time frequency resource, and if only one of the time domain starting position, the time domain ending position, and the time domain length of the first time frequency resource is indicated in the first indication information, the other information may be predefined or indicated by other signaling. For example, if the first indication information indicates a time domain start position of the first time frequency resource, a time domain end position or a time domain length of the first time frequency resource may be predefined or determined by signaling, so that in combination, the time domain position of the first time frequency resource may be determined.

In one possible approach, to indicate the time domain position of the first time-frequency resource in the second time-frequency resource, the second time-frequency resource may be divided and numbered according to the granularity of the time-frequency resource unit in the time domain. The time domain resource unit may be one or more time domain symbols, or one or more time slots. Assuming that the second time-frequency resource corresponds to one time slot in time domain, i.e. corresponds to 14 time-domain symbols, the 14 time-domain symbols may be divided into T time-domain resource units, e.g. into 14 or 7 time-domain resource units, i.e. T is equal to 14 or 7. The first indication information may be used to indicate a time domain position of the first time-frequency resource in the second time-frequency resource through a bitmap with a length T, where each bit in the bitmap corresponds to a time domain resource unit in the second time-frequency resource one to one.

In a possible manner, the frequency domain position information of the first time frequency resource may include at least one of a frequency domain starting position, a frequency domain ending position, and a frequency domain length of the first time frequency resource, or may be directly the frequency domain position information of the first time frequency resource. It is to be understood that the frequency domain position of the first time-frequency resource may be determined by any two or more of a frequency domain starting position, a frequency domain ending position, and a frequency domain length of the first time-frequency resource, and if only one of the frequency domain starting position, the frequency domain ending position, and the frequency domain length of the first time-frequency resource is indicated in the first indication information, the other information may be predefined or indicated by other signaling. For example, if the first indication information indicates a frequency domain starting position of the first time frequency resource, a frequency domain ending position or a frequency domain length of the first time frequency resource may be predefined or determined by signaling, so that in combination, the frequency domain position of the first time frequency resource may be determined.

In one possible approach, to indicate the frequency domain location of the first time-frequency resource in the second time-frequency resource, the second time-frequency resource may be divided and numbered in the frequency domain according to the granularity of the frequency-domain resource units. The frequency domain resource unit may be one or more RBs, or may be one or more RB groups. Assuming that the second time-frequency resource corresponds to 100 RBs in the frequency domain, the 100 RBs may be divided into F frequency-domain resource units, for example, into 10 frequency-domain resource units, i.e., F is equal to 10. The first indication information may be used to indicate the frequency domain position of the first time-frequency resource in the second time-frequency resource through a bitmap with a length of F, where each bit in the bitmap corresponds to a frequency domain resource unit in the second time-frequency resource one to one.

Optionally, the first time-frequency resource information may also include at least one of a start position of a time-frequency resource unit of the first time-frequency resource, an end position of the time-frequency resource unit, and a number of the time-frequency resource units, or may be a position of the time-frequency resource unit of the first time-frequency resource directly. It is to be understood that the time-frequency resource of the first time-frequency resource may be determined by any two or more of a start position of the time-frequency resource unit, an end position of the time-frequency resource unit, and a number of the time-frequency resource units of the first time-frequency resource, and if only one of the start position of the time-frequency resource unit, the end position of the time-frequency resource unit, and the number of the time-frequency resource units of the first time-frequency resource is indicated in the first indication information, the other information may be predefined or indicated by other signaling. For example, if the first indication information indicates a start position of a time-frequency resource element of the first time-frequency resource, an end position of the time-frequency resource element of the first time-frequency resource or a number of time-frequency resource elements may be predefined or determined by signaling, so that in combination the time-frequency position of the first time-frequency resource may be determined.

In a possible manner, in order to indicate the position of the time-frequency resource unit of the first time-frequency resource in the second time-frequency resource, the second time-frequency resource may be divided and numbered according to the granularity of the time-frequency resource unit. Assuming that the second time-frequency resource includes S time-frequency resource units, the first indication information may be used to indicate the positions of the time-frequency resource units of the first time-frequency resource in the second time-frequency resource through a bitmap with a length of S, where each bit in the bitmap corresponds to a time-frequency resource unit in the second time-frequency resource.

Optionally, if the first indication information indicates the first time-frequency resource by means of the UCI, the first indication information may be carried in the UCI, for example, the UCI includes a field for indicating the first time-frequency resource. Different values of the field represent different first time-frequency resource information.

It can be understood that the first indication information may indicate the start position of the first time-frequency resource by an offset relative to the time-frequency resource unit in which the UCI is located, where the offset may be a positive value or a negative value, where a positive value indicates that the start position of the first time-frequency resource is a certain time-frequency resource unit after the time-frequency resource unit in which the UCI is located, and a negative value indicates that the start position of the first time-frequency resource is a certain time-frequency resource unit before the time-frequency resource unit in which the UCI is located. For example, when the offset value is "1", it indicates that the start position of the first time-frequency resource is the first time-frequency resource unit after the time-frequency resource unit in which the UCI is located, and when the offset value is "-2", it indicates that the start position of the first time-frequency resource is the second time-frequency resource unit before the time-frequency resource unit in which the UCI is located.

Optionally, the number of time-frequency resource units of the first time-frequency resource may be explicitly indicated by the first indication information, and the starting position of the first time-frequency resource is implicitly indicated, for example, the starting position of the default first time-frequency resource starts from the xth time-frequency resource unit after the time-frequency resource unit where the UCI is located, where X is a positive integer, and may be predefined or configured through signaling; alternatively, the information of the number and the starting position of the time-frequency resource elements of the first time-frequency resource may also be explicitly indicated by the first indication information, for example, a part of bits in the first indication information is used to indicate the number of the time-frequency resource elements of the first time-frequency resource, a part of bits is used to indicate the starting position of the first time-frequency resource, or the first indication information indicates the combination information of the number and the starting position of the time-frequency resource elements of the first time-frequency resource.

In this application, the signaling may be RRC signaling, medium access control (medium access control) signaling, or physical layer signaling, and the specific form of the signaling is not limited in this application.

In the following, different manners of indicating the first time/frequency resources when the first time/frequency resources are indicated by means of UCI are exemplified.

(1) Displaying the number of time-frequency resource units indicating the first time-frequency resource through UCI, and implicitly indicating the initial position of the first time-frequency resource

Let X be 1, i.e. the starting position of the first time-frequency resource is from the first time-frequency resource unit after the time-frequency resource unit in which the UCI is located. The value of the field in the UCI for indicating the first time-frequency resource indicates the number of time-frequency resource units of the first time-frequency resource, for example, the binary value of the field for indicating the first time-frequency resource is "11", that is, the value is 3, and indicates that the number of time-frequency resource units of the first time-frequency resource is 3. It can be understood that, in the embodiment of the present application, a value of X is not limited, and the number of bits of the field for indicating the first time-frequency resource is also not limited.

(2) The number and the starting position of the time frequency resource units of the first time frequency resource are both in an explicit indication mode

It may be that the first two bits in the field for indicating the first time-frequency resource in the UCI represent the number of time-frequency resource units of the first time-frequency resource, and the last two bits represent the starting position of the first time-frequency resource, for example, if the field for indicating the first time-frequency resource takes the value of "1101", then the number of time-frequency resource units representing the first time-frequency resource is 3, and the starting position of the first time-frequency resource is from the 1 st time-frequency resource unit after the time-frequency resource unit where the UCI is located. It can be understood that, in the embodiment of the present application, no limitation is made on which bits represent the number of time-frequency resource units of the first time-frequency resource, which bits represent the starting position of the first time-frequency resource, and no limitation is also made on the number of time-frequency resource units representing the first time-frequency resource or the number of bits representing the starting position of the first time-frequency resource.

Or, there may be a corresponding relationship between a value of a field used for indicating the first time-frequency resource in the UCI and the number and the starting position of the time-frequency resource unit of the first time-frequency resource, for example, as shown in table 1:

TABLE 1

Optionally, if the first indication information indicates the first time-frequency resource by means of a sequence (first sequence), the sequence may be a Primary Synchronization Sequence (PSS), a ZC sequence, or an m sequence adopted by a Secondary Synchronization Sequence (SSS), and the type of the sequence is not limited in the embodiment of the present application. For example, taking an m-sequence of length 12 as an example, the sequence is mapped onto 12 consecutive subcarriers in the frequency domain, 12 different cyclic shifts exist in the frequency domain for a certain m-sequence of length 12, and the sequences obtained by the 12 different cyclic shifts can be numbered, and the numbers 0 to 11 correspond to the 12 sequences, respectively.

In one possible approach, one of the 12 sequences may be referred to as a base sequence (or reference sequence) of the m-sequence, and the other 11 sequences may be obtained by cyclic shifting the base sequence. The length of the m-sequence determines how many cyclic shifts the m-sequence has. The m sequences with the length of N have N different cyclic shifts, wherein N is a positive integer.

Indicating the first time-frequency resource by the sequence may be understood as an implicit way, and the time-frequency resource occupied by the sequence itself is associated with the first time-frequency resource.

In a possible manner, the symbol where the sequence is located also represents the time domain position of the URLLC service data, and the frequency domain resource used for transmitting the eMBB service data, excluding the frequency domain resource occupied by the sequence used by the first indication information, is the frequency domain resource of the URLLC service data, so that the first time frequency resource can be indicated.

As shown in fig. 2, a gray shaded portion in the drawing represents a first time-frequency resource, a white portion in the drawing represents a time-frequency resource occupied by the first sequence, and a dark gray portion represents a time-frequency resource of the eMBB service data. It can be appreciated that the dark gray portion, the gray shaded portion, and the white portion in combination are time-frequency resources allocated by the network device to the eMBB traffic data.

For example, after the network device receives the sequence, a symbol in which the sequence used by the first indication information is located may be determined as a time domain position for transmitting URLLC service data, and the frequency domain resource for transmitting URLLC service data may be a frequency domain resource excluding a frequency domain resource occupied by the sequence used by the first indication information in the frequency domain resource for transmitting eMBB service data.

In another possible manner, the frequency domain position occupied by the sequence used by the first indication information also represents the frequency domain position where the URLLC service data is located, and the symbol between the start symbol and the end symbol of the sequence represents the time domain position where the URLLC service data is located, that is, the frequency domain position and the time domain position of the time-frequency resource occupied by the URLLC service data are indicated by the first indication information, as shown in the figure. In fig. 3, a gray-shaded portion represents a first time-frequency resource, a white portion represents a start symbol and a stop symbol of a sequence, and a dark gray portion represents a time-frequency resource of eMBB service data. It can be appreciated that the dark gray portion, the gray shaded portion, and the white portion in combination are time-frequency resources allocated by the network device to the eMBB traffic data.

In another possible manner, the symbol between the start symbol and the end symbol of the sequence used by the first indication information indicates the time domain position of the URLLC service data, and the frequency domain position of the URLLC service data is the same as the frequency domain position of the eMBB service data, that is, the time domain position of the time-frequency resource occupied by the URLLC service data is indicated by the first indication information, and the frequency domain position of the time-frequency resource occupied by the URLLC service data may be predefined or configured through other signaling. It can be understood that the time-frequency resource used by URLLC service data is to remove the time-frequency resource used by the first indication information. As shown in fig. 4, the gray-shaded portion represents a first time-frequency resource, the white portion represents a start symbol and a stop symbol of a sequence, and the dark gray portion represents a time-frequency resource of eMBB service data. It can be appreciated that the dark gray portion, the gray shaded portion, and the white portion in combination are time-frequency resources allocated by the network device to the eMBB traffic data.

S102, the network equipment receives the first indication information and determines the first time-frequency resource according to the first indication information.

After receiving uplink information including the first indication information sent by the terminal, the network device obtains the first indication information through detection, so that the first time-frequency resource can be determined according to the first indication information. For how the network device determines the first time-frequency resource, reference may be made to the description of S101, which is not described herein again.

S103, the terminal sends URLLC service data on the first time-frequency resource.

Accordingly, the network device receives URLLC traffic data on the first time-frequency resource.

It is understood that, in the embodiment of the present application, the precedence order between S101 and S103 is not distinguished or limited, for example, S103 may be executed before, after, or simultaneously with S101, and in addition, the precedence order between S102 and S103 is also not distinguished or limited, and the specific order is determined by the inherent logic of the communication method.

According to the communication method, the uplink control information or the uplink control sequence is used for indicating the uplink preempted time-frequency resource to the network equipment in an explicit or implicit mode, and therefore the network equipment can receive the URLLC service data according to the received first indication information. The URLLC service data occupies time-frequency resources of the same terminal for transmitting the eMBB service data, so that the reliability of URLLC service data transmission can be improved, and the transmission delay of the URLLC service data can be reduced. Because the time frequency resource of the eMMC service data is based on scheduling, the time frequency resource has better channel quality compared with the time frequency resource without authorization, so that the URLLC service data is transmitted through the time frequency resource of the eMMC service data, and the reliability of transmitting the URLLC service data can be improved.

Further, for a scenario that the URLLC service data may use the license-exempt resource, by the method of the embodiment of the present application, since the terminal that concurrently transmits the URLLC service data and the eMBB service data uses the resource based on scheduling to perform uplink transmission of the URLLC service data, more license-exempt resources may be freed for transmitting URLLC service uplink data of other terminals.

Optionally, on the basis of the foregoing embodiment, the first indication information may also be used to indicate a Modulation and Coding Scheme (MCS) and a Transport Block Size (TBS) of the URLLC service data. That is to say, the first indication information may have a corresponding relationship with the MCS and the TBS of the URLLC service data, in addition to the first time-frequency resource, and after receiving the first indication information, the network device may also determine the MCS and the TBS of the URLLC service data according to the first indication information. In a possible manner, the base station configures at least one combination of MCS and TBS through higher layer signaling, for example, RRC signaling, and the terminal indicates the MCS and TBS of the URLLC service data through the first indication information. The combination of one MCS and TBS may be referred to as one MCS/TBS pattern. By indicating the MCS/TBS pattern of URLLC service data, the signaling overhead of specifically indicating MCS and TBS can be reduced. It is to be understood that, in addition to multiplexing the first indication information to indicate the MCS/TBS pattern, an additional field or information bit may be used in the UCI to indicate the MCS/TBS pattern, for example, the field or information bit may be two bits, or the MCS/TBS pattern may be indicated by a different sequence from the first indication information.

Optionally, the first indication information may also be used to indicate one of an MCS and a TBS of the URLLC service data, for example, the first indication information is used to indicate the TBS of the URLLC service data, and the MCS of the URLLC service data may be predefined, or may be notified to the terminal by the network device through other signaling; alternatively, the first indication information is used to indicate the MCS of URLLC traffic data, and the TBS of URLLC traffic data may be predefined, or may be notified to the terminal by the network device through other signaling.

As shown in table 2 below, taking the field including 2 bits as an example, a manner of indicating the URLLC service data MCS/TBS pattern through UCI is illustrated, and it can be understood that the 2-bit field here may be a field in the first indication information, and may also be a 2-bit field in other indication information.

TABLE 2

UCI	Means of
		00	MCS/TBS Pattern 0
01	MCS/TBS Pattern 1
		10	MCS/TBS Pattern 2
11	MCS/TBS Pattern 3

For example, one embodiment of MCS/TBS pattern 0 is that the modulation scheme is Quadrature Phase Shift Keying (QPSK), with a TBS of 504 bits; the MCS/TBS pattern of the embodiments of the present application is not limited thereto.

As shown in table 3 below, taking an m-sequence with a length of 12 as an example, wherein the numbers of 12 cyclic shifts are 0 to 11, a manner of indicating the MCS/TBS pattern of URLLC traffic data by cyclic shifts of the sequence is illustrated.

TABLE 3

Numbering of cyclic shifts of sequences	Means of
		0	MCS/TBS Pattern 0
1	MCS/TBS Pattern 1
		2	MCS/TBS Pattern 2
3	MCS/TBS Pattern 3
		4	MCS/TBS Pattern 4
5	MCS/TBS Pattern 5
		6	MCS/TBS Pattern 6
7	MCS/TBS Pattern 7
		8	MCS/TBS Pattern 8
9	MCS/TBS Pattern 9
		10	MCS/TBS Pattern 10
11	MCS/TBS Pattern 11

Optionally, the first indication information may be further configured to indicate a subcarrier interval of the URLLC service data, that is, the first indication information may have a corresponding relationship with the first time-frequency resource, may also have a corresponding relationship with at least one of an MCS and a TBS of the URLLC service data, and may also have a corresponding relationship with the subcarrier interval of the URLLC service data. After receiving the first indication information, the network device may also determine the subcarrier interval of the URLLC service data according to the first indication information. In a possible mode, the network device configures at least one optional subcarrier interval for URLLC service data through high-level signaling, and the terminal indicates the subcarrier interval of URLLC service data through the first indication information. The first indication information indicates the subcarrier spacing of URLLC traffic data, so that the system parameter of URLLC traffic data can be configured more flexibly, and the system parameter herein may also be called numerology in some cases. It is to be understood that, in addition to multiplexing the first indication information to indicate the subcarrier spacing, an additional field or information bit may be used in the UCI to indicate the subcarrier spacing, for example, a two-bit field or information bit may be used, or the subcarrier spacing may be indicated by other indication information different from the first indication information. The indication information may be indicated by means of UCI or sequence.

As shown in table 4 below, a manner of indicating subcarriers of URLLC traffic data through UCI is illustrated by taking an example in which a field includes 2 bits.

TABLE 4

UCI	Subcarrier spacing
		00	15kHz
01	30kHz
		10	60kHz
11	120kHz

For indicating the subcarrier spacing by sequence, one possible way may be: each sequence cyclic shift corresponds to a subcarrier spacing, and different sequence cyclic shifts may correspond to different or the same subcarrier spacing. For example, an m-sequence with a length of 12 is taken as an example, where 12 cyclic shifts are numbered from 0 to 11, the subcarrier spacing corresponding to cyclic shift 0 to 3 may be 15kHz, the subcarrier spacing corresponding to cyclic shift 4 to 7 may be 30kHz, and the subcarrier spacing corresponding to cyclic shift 8 to 11 may be 60kHz.

In summary, that is, the first indication information may indicate the first time-frequency resource, and may also indicate a subcarrier spacing of URLLC traffic data and/or an MCS/TBS pattern of URLLC traffic data.

It is understood that, before S101, the following may be further included: and the terminal receives third indication information from the network equipment, wherein the third indication information is used for indicating that the terminal can preempt second time-frequency resources which are already allocated for transmitting eMBB service data and used for transmitting URLLC service data. After receiving the third indication information, the terminal may execute S101 if necessary. The third indication information may be carried by higher layer signaling, e.g., RRC signaling. Optionally, the network device may determine whether to configure the terminal for preemption according to the capability information reported by the terminal.

It is to be understood that the third indication information may be a field, and may indicate that the terminal cannot preempt the second time-frequency resource already allocated for transmitting the eMBB service data, in addition to indicating that the terminal can preempt the second time-frequency resource already allocated for transmitting the eMBB service data.

In order to further reduce the complexity of blind detection of the first indication information by the network device, the first time-frequency resource may be notified in a two-stage indication manner. In addition, in addition to notifying the network device of the first time-frequency resource, this two-stage indication manner may also be used to notify a subcarrier spacing of URLLC traffic data and/or an MCS/TBS pattern of URLLC traffic data, as shown in fig. 5, another embodiment of the present application provides a communication method, where the method may include:

s501, the terminal sends second indication information to the network device, where the second indication information is used to indicate that the first indication information needs to be received, that is, to indicate that preemption occurs, where the preemption occurs indicates that URLLC service data occupies a second time-frequency resource allocated to the eMBB service data.

In one possible approach, the second indication information may indicate that the first indication information needs to be received through UCI or a second sequence. It is to be understood that the indication by the UCI or the second sequence may also be understood as carrying the second indication information in the UCI or the second sequence.

Taking the example that the first indication information needs to be received through the second sequence indication, assuming that the second sequence length is 12, and the second sequence length is mapped on 12 continuous subcarriers of 1 symbol, in a possible manner, the RB where the second sequence is located is the central RB of the second time-frequency resource, which can improve the detection efficiency of the network device. And assuming that the number of the RB corresponding to the second time-frequency resource is from the P-th RB to the Q-th RB, the number M of the center RB of the second time-frequency resource is P + floor ((Q-P)/2) or P + ceil ((Q-P)/2), wherein P and Q are non-negative integers, P is smaller than Q, floor is rounded down, and ceil is rounded up. For example, P equals 0,Q equals 10, then M equals 5; p equals 0,Q equals 11, then M equals 5 or 6.

It can be understood that the time-frequency resource in which the second sequence is located may be configured to the terminal by the network device through signaling or may be predefined by the system, which is not limited in this embodiment of the application.

S502, the terminal sends first indication information to the network equipment.

Here, the manner in which the terminal sends the first indication information to the network device and the meaning and content of the first indication information may specifically refer to the corresponding description of the foregoing embodiment, and are not described herein again.

It is understood that S501 may be executed before S502 or simultaneously with S502, which is not limited in this embodiment of the application.

S503, the network device receives the first indication information and the second indication information, and determines the first time-frequency resource according to the first indication information.

If the network device detects the second indication information, the first indication information can be further detected; if the network device does not detect the second indication information, the first indication information may not be detected any more. Since the network device detects the first indication information according to the second indication information, the second indication information may also be referred to as information for indicating the network device to receive the first indication information.

After receiving uplink information including the first indication information sent by the terminal, the network device obtains the first indication information through detection, so that the first time-frequency resource can be determined according to the first indication information. Further, the network device may also determine a subcarrier spacing of URLLC traffic data and/or an MCS/TBS pattern of URLLC traffic data according to the first indication information. Optionally, the network device may also determine the first time-frequency resource and/or the subcarrier interval of the URLLC service data and/or the MCS/TBS pattern of the URLLC service data comprehensively according to the first indication information and the second indication information.

S504, the terminal sends URLLC business data on the first time-frequency resource

Correspondingly, the network equipment receives the URLLC service data on the first time-frequency resource, and demodulates and decodes the URLLC service data.

It is understood that, in the embodiments of the present application, the sequence numbers of the steps are not used to limit the sequence of the steps, and the specific sequence is determined by the inherent logic of the communication method.

In the embodiment of the application, the complexity of the first indication information of the base station for blind test can be effectively reduced by introducing the second indication information, and when the second indication information is detected in a blind mode, subsequent secondary blind tests are performed, so that the false alarm probability can be reduced.

Corresponding to the part implemented by the terminal in the communication method described in fig. 1 or fig. 5, the embodiment of the present application further provides a corresponding communication apparatus, where the communication apparatus includes a corresponding module for executing each part in fig. 1 or fig. 5. The module may be software, hardware, or a combination of software and hardware. The communication device may be a terminal or may be a chip for a terminal.

As shown in fig. 6, the communication apparatus 600 may include:

a generating module 601, configured to generate first indication information, where the first indication information is used to indicate first time-frequency resource information used for transmitting first service data, where the first service data and the second service data are uplink service data of the same terminal, and the first time-frequency resource is part or all of a second time-frequency resource allocated to the second service data.

Optionally, the generating module 601 may be further configured to generate second indication information, where the second indication information is used to indicate that the first indication information needs to be received, that is, preemption occurs.

A transceiver module 602, configured to send the first indication information and transmit the first service data on the first time-frequency resource.

Optionally, the transceiver module 602 may further be configured to transmit second indication information.

Optionally, the transceiver module 602 is configured to receive third indication information, where the third indication information is used to indicate that the terminal is capable of preempting a second time-frequency resource that has been allocated for transmitting second service data, for transmitting the first service data.

The communications apparatus 600 can further include a processing module 603 configured to determine, according to the received third indication information, that a second time-frequency resource already allocated for transmission of second service data can be preempted for transmission of the first service data.

For the first indication information, the second indication information, and the third indication information, reference may be made to the related description in the foregoing method embodiments, and details are not repeated here.

It will be appreciated that the transceiver 602 may be used to implement all of the corresponding transmit and receive actions in the embodiments illustrated in fig. 1 or 5.

Optionally, the communication device 600 may further comprise a storage module for storing at least one of parameters, information and instructions.

It should be noted that, for the operation and implementation of each module in the communication apparatus 600 in the embodiment of the present application, reference may be further made to corresponding descriptions in the method embodiment, and details are not described here again.

In one possible design, one or more of the modules in FIG. 6 may be implemented by one or more processors or by one or more processors and memory; or by one or more processors and transceivers; or by one or more processors, transceivers, and memories, which are not limited in this application. The processor may also be configured to implement all of the corresponding processing actions in the embodiments shown in fig. 1 or fig. 5, where the processing actions may include the operations implemented by the generation module 601. The processor and the memory may be provided separately or may be integrated together.

The processor may include at least one of a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a Microcontroller (MCU), an Application Specific Integrated Circuit (ASIC), or a Field Programmable Gate Array (FPGA).

The embodiment of the present application further provides a communication device, where the communication device may be a terminal or a chip that can be used for the terminal, and the communication device may include: the terminal comprises a memory and at least one processor, wherein the memory is used for storing instructions or programs, and the at least one processor is used for calling the instructions or the programs in the memory so as to realize the operation corresponding to the terminal in any one of the methods in the various embodiments. The processor and the memory may be provided separately or may be integrated together.

Corresponding to the part of the communication method described in fig. 1 or fig. 5 implemented by the network device, the embodiment of the present application further provides a corresponding communication apparatus, where the communication apparatus includes a corresponding module for executing each part in fig. 1 or fig. 5. The module may be software, hardware, or a combination of software and hardware. The communication device may be a network device, or may be a chip for a network device. As shown in fig. 7, the communication apparatus may include:

a transceiver module 701, configured to receive first indication information, where the first indication information is used to indicate first time-frequency resource information used for transmitting first service data, where the first time-frequency resource is a part of a second time-frequency resource allocated to second service data, and the first service data and the second service data are uplink service data of a same terminal;

a processing module 702, configured to determine the first time-frequency resource according to the first indication information;

the transceiver module 701 is further configured to receive the first service data on the first time-frequency resource.

Optionally, the transceiver module 701 may be further configured to receive second indication information, where the second indication information needs to receive the first indication information.

Optionally, the transceiver module 701 may further be configured to send third indication information, where the third indication information is used to indicate that the terminal can preempt the second time-frequency resource allocated to the second service data for transmitting the first service data.

It will be appreciated that the transceiver module 701 may be used to implement all of the corresponding transmit and receive actions in the embodiments illustrated in fig. 1 or fig. 5. The processing module 702 may be used to implement all of the corresponding processing actions in the embodiments shown in fig. 1 or fig. 5.

Optionally, the communication device 700 may further comprise a storage module for storing at least one of parameters, information and instructions.

It should be noted that, for the operation and implementation of each module in the communication apparatus 700 in the embodiment of the present application, reference may be further made to corresponding descriptions in the method embodiment, and details are not described here again.

In one possible design, one or more of the modules in FIG. 7 may be implemented by one or more processors or by one or more processors and memory; or by one or more processors and transceivers; or by one or more processors, transceivers, and memories, which are not limited in this application. The processor may also be used to implement all of the corresponding processing acts in the embodiments shown in fig. 1 or fig. 5. The processor and the memory may be provided separately or may be integrated together.

As shown in fig. 8, an embodiment of the present application further provides a communication apparatus 800, where the communication apparatus 800 may be a terminal, or may be a chip that can be used for a terminal, or may be a network device, or may be a chip that can be used for a network device, the communication apparatus includes a processing component 801 and a transceiver component 802,

when the communication apparatus 800 is a terminal or a chip that can be used for a terminal:

a processing unit 801 for implementing operations corresponding to the generating module 601;

a transceiver component 802 for implementing the operation corresponding to the transceiver module 702.

When the communication apparatus 800 is a network device or a chip that can be used for a network device:

a processing unit 801 for implementing operations corresponding to the processing module 702;

a transceiver component 802, configured to implement operations corresponding to the transceiver module 701.

Optionally, the communication device may further comprise a storage means for storing at least one of parameters, information and instructions.

In one possible design, one or more of the components in FIG. 8 may be implemented by one or more processors, or by one or more processors and memory; or by one or more processors and transceivers; or by one or more processors, transceivers, and memories, which are not limited in this application. The processor may also be used to implement all of the corresponding processing acts in the embodiments shown in fig. 1 or fig. 5. The processor and the memory may be provided separately or may be integrated together.

In one possible design, the various components of the communications device 800 may be implemented by respective circuits.

It should be noted that, for the operation and implementation of each component in the communication apparatus 800 in the embodiment of the present application, reference may be further made to corresponding descriptions in the method embodiment, and details are not described here again.

An embodiment of the present application further provides a communication apparatus, where the communication apparatus may be a network device or a chip that can be used for the network device, and the communication apparatus may include: the network device comprises a memory and at least one processor, wherein the memory is used for storing instructions or programs, and the at least one processor is used for calling the instructions or the programs in the memory so as to realize the operation corresponding to the network device in any one of the methods in the various embodiments. The processor and the memory may be provided separately or may be integrated together.

Those skilled in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in the embodiments of the present application may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. 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 embodiments of the present application.

The techniques described herein may be implemented by various means. For example, these techniques may be implemented in hardware, software, or a combination of hardware and software. For a hardware implementation, the processing units used to perform the techniques at a communication device (e.g., a base station, terminal, network entity, or chip) may be implemented in one or more general-purpose processors, digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), application Specific Integrated Circuits (ASICs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combinations thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in the embodiments herein may be embodied directly in hardware, in a processor executing instructions, or in a combination of the two. The memory may be RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a memory may be coupled to the processor such that the processor can read information from, and write information to, the memory. Optionally, the memory may also be integrated into the processor. The processor and the memory may be disposed in an ASIC, which may be disposed in the terminal. Alternatively, the processor and the memory may be provided in different components in the terminal.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others. Combinations of the above should also be included within the scope of computer-readable media.

The same or similar parts between the various embodiments in this specification may be referred to each other and combined with each other according to the inherent logic thereof to form a new embodiment.

The above-described embodiments of the present application do not limit the scope of the present application.

Claims

1. A method of communication, comprising:

sending first indication information and second indication information, wherein the first indication information is used for indicating first time-frequency resource information used for transmitting first service data, the first service data and the second service data are uplink service data of the same terminal, the first time-frequency resource is part or all of second time-frequency resources allocated to the second service data, and the second indication information is used for indicating that the first indication information needs to be received and indicating that the first service data occupies the second time-frequency resources;

and transmitting the first service data on the first time-frequency resource.

2. The method of claim 1, wherein the first indication information is used for indicating first time-frequency resource information used for transmitting first traffic data, and comprises: the first indication information is used for indicating the number of time-frequency resource units of a first time-frequency resource; or, the first indication information is used to indicate the number of time-frequency resource units of the first time-frequency resource and information of the start position of the time-frequency resource.

3. The method of claim 1, wherein the first indication information is used for indicating first time-frequency resource information used for transmitting first traffic data, and comprises: the first indication information is used for indicating time domain starting position information and frequency domain position information of the first time-frequency resource; or, the first indication information is used to indicate time domain start position information, time domain end position information, and frequency domain position information of the first time-frequency resource.

4. The method of claim 2 or 3, wherein the first indication information is further used for indicating a Modulation Coding Scheme (MCS) and a Transport Block Size (TBS) of the first traffic data.

5. The method of any of claims 1-3, wherein the first indication information is further used to indicate a subcarrier spacing for transmitting the first traffic data.

6. The method according to any of claims 1-3, wherein the first indication information is carried in uplink control information, UCI, or a first sequence.

7. The method of claim 1, wherein the second indication information is carried in a second sequence.

8. The method of claim 7, wherein the resource block RB in which the second sequence is located is a center RB of the second time-frequency resource.

9. The method according to any of claims 1-3 and 7-8, further comprising, before said sending the first indication information:

and receiving third indication information, wherein the third indication information is used for indicating that the terminal can preempt second time-frequency resources which are allocated to the transmission of the second service data for transmitting the first service data.

10. The method of any of claims 1-3 and 7-8, wherein the first traffic data is URLLC traffic data and the second traffic data is eMBB traffic data.

11. A method of communication, comprising:

receiving first indication information and second indication information, wherein the first indication information is used for indicating first time-frequency resource information used for transmitting first service data, the first time-frequency resource is a part of a second time-frequency resource allocated to second service data, the first service data and the second service data are uplink service data of the same terminal, and the second indication information is used for indicating that the first indication information needs to be received and indicating that the first service data occupies the second time-frequency resource;

receiving the first traffic data on the first time-frequency resource.

12. The method of claim 11, wherein the first indication information is used for indicating first time-frequency resource information used for transmitting first traffic data, and comprises: the first indication information is used for indicating the number of time-frequency resource units of a first time-frequency resource; or, the first indication information is used to indicate the number of time-frequency resource units of the first time-frequency resource and the information of the starting position; or, the first indication information is used to indicate time domain start position information and frequency domain position information of the first time-frequency resource; or, the first indication information is used to indicate time domain start position information, time domain end position information, and frequency domain position information of the first time-frequency resource.

13. The method of claim 12, wherein the first indication information is further used for indicating a Modulation Coding Scheme (MCS) and a Transport Block Size (TBS) of the first traffic data.

14. The method of claim 12 or 13, wherein the first indication information is further used for indicating a subcarrier spacing of the first traffic data.

15. The method according to any of claims 11-13, wherein the first indication information is carried in uplink control information or a first sequence.

16. The method of claim 11, wherein the second indication information is carried in a second sequence.

17. The method according to claim 16, wherein the resource block in which the sequence is located is a center resource block of the second time-frequency resource.

18. The method according to any of claims 11-13, 16-17, further comprising, prior to said receiving first indication information:

and sending third indication information, wherein the third indication information is used for indicating that the terminal can preempt a second time-frequency resource which is already allocated to second service data for transmitting the first service data.

19. The method of any of claims 11-13 and 16-17, wherein the first traffic data is URLLC traffic data, and wherein the second traffic data is eMBB traffic data.

20. A communication apparatus for implementing the communication method according to any one of claims 1 to 10.

21. A communication apparatus for implementing the communication method according to any one of claims 11 to 19.

22. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 10.

23. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 11 to 19.