WO2019120303A1

WO2019120303A1 - Communication method and apparatus

Info

Publication number: WO2019120303A1
Application number: PCT/CN2018/122916
Authority: WO
Inventors: 杨育波; 张鹏; 赵毅男
Original assignee: 华为技术有限公司
Priority date: 2017-12-23
Filing date: 2018-12-22
Publication date: 2019-06-27
Also published as: CN109963335B; CN109963335A

Abstract

Disclosed in the embodiments of the present application are a communication method and apparatus. The method comprises: when a terminal needs to send URLLC service data, the URLLC service data being able to preempt some or all of time-frequency resources that are allocated by a network device to the terminal for transmitting eMBB service data; the terminal sending first indication information to the network device, the first indication information being used to indicate the time-frequency resources preempted by the URLLC service data. The first indication information may be carried in uplink control information or a sequence sent by the terminal. The method enables the URLLC service data to preempt the time-frequency resources of the same terminal for transmitting the eMBB service data, thereby improving the reliability of transmission of the URLC service data and reducing the latency of transmission of the URLLC service data.

Description

Communication method and device

The present application claims priority to Chinese Patent Application No. PCT Application No. No. No. No. No. No. No. No.

Technical field

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

Background technique

The new radio (NR) mobile communication system can support but is not limited to enhanced mobile broadband (eMBB) services, ultra reliable and low latency communications (URLLC) services, and massive machines. Massive machine type communications (mMTC) business. Typical eMBB services may include: ultra high definition video, augmented reality (AR), virtual reality (VR), etc. The main features of these services are large amount of transmitted data and high transmission rate. Typical URLLC services can include: wireless control in industrial manufacturing or production processes, motion control of driverless cars and drones, and tactile interaction applications such as remote repair and remote surgery. The main features of these services are ultra-reliable. Sex, low latency, less data transfer and burstiness. Typical mMTC services can include: smart grid distribution automation, smart city, etc. The main features are the large number of networked devices, the small amount of transmitted data, and the insensitivity of data to transmission delay. These mMTC terminals need to meet low cost and very long Standby time requirements.

Different services have different requirements for mobile communication systems. How to better support the data transmission requirements of multiple different services at the same time is one of the technical problems that need to be solved in current 5G mobile communication systems.

The generation of data packets of the URLLC service is bursty and random, and may not generate data packets for a long period of time, or may generate multiple data packets in a short time. The data packets of the URLLC service are in most cases small packets, such as 32 or 50 bytes. The characteristics of the data packets of the URLLC service affect the way the transmission resources are allocated in the communication system. The transmission resources include but are not limited to at least one of the following: a time domain symbol, a frequency domain resource, a time-frequency resource, a codeword resource, and a beam resource. Normally, the allocation of transmission resources is done by the base station. In order to reduce the delay of the URLLC service, a grant free uplink transmission is introduced in the NR. The terminal can use the reserved uplink resource for uplink transmission without obtaining the uplink transmission resource allocated by the base station, so that the transmission delay can be effectively reduced. However, as the URLLC uplink service data to be transmitted increases, it may cause a situation where the license-free resources are available.

Summary of the invention

The embodiment of the present application provides a communication method and device, which can improve the reliability of transmitting the first service data and reduce the transmission delay of the first service data.

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

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

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

In a possible design, the communication method of the first aspect may further include: sending second indication information, indicating that the first indication information needs to be received. The two-level indication can reduce the complexity of the network device blindly detecting the first indication information.

In a possible design, before the sending the first indication information, the communication method of the first aspect may further include: receiving third indication information, where the third indication information is used to indicate that the terminal can preempt the allocation for the transmission. The second time-frequency resource of the second service data is used to transmit the first service data. The third indication information is used to enable the terminal to perform preemption, so that network side control can be implemented, the resource scheduling is more flexible, and a customized policy for the terminal can also be implemented.

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 the first service data, where the first time-frequency resource is a second time-frequency resource allocated to the second service data. Part of the first service data and the second service data being uplink service data of the same terminal;

Determining, according to the first indication information, the first time-frequency resource;

Receiving the first service data on the first time-frequency resource.

In a possible design, the communication method of the foregoing second aspect may further include: receiving the second indication information.

In a possible design, the communication method of the foregoing second aspect may further include: sending the third indication information.

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

In a possible design of the communication method of the foregoing first aspect and the second aspect, the first indication information is used to indicate that the first time-frequency resource information used for transmitting the first service data includes: the first indication information The time domain start location information and the frequency domain location information used to indicate the first time-frequency resource; or the first indication information is used to indicate time domain start location information and time domain termination location information of the first time-frequency resource And frequency domain location information.

In a possible design of the communication method of 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, and the specific indication MCS and the Signaling overhead of the TBS.

In a possible design of the communication method of the foregoing first aspect and the second aspect, the first indication information is further used to indicate a subcarrier spacing for transmitting the first service data, and the first service data may be configured more flexibly. System parameters.

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

In a possible design, the first indication information may use the second time-frequency resource or the 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 of the first aspect and the second aspect, the second indication information is carried in the second sequence.

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

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

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

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

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

In a fifth aspect, there is also provided a communication system, which may comprise the communication device of the above third aspect and/or the communication device of the fourth aspect.

In a sixth aspect, an embodiment of the present application provides a computer storage medium having a program stored thereon that, when executed, causes a computer to perform the method described in 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 methods described in the various aspects above.

DRAWINGS

1 is a schematic flowchart of a communication method according to an embodiment of the present application;

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

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

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

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

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 apparatus according to an embodiment of the present application;

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

Detailed ways

To facilitate understanding, some of the terms related to this application are described below.

In the present application, the terms "network" and "system" are often used interchangeably, and "device" and "device" are often used interchangeably, but those skilled in the art can 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 device. A terminal is a device having a communication function, and may include a handheld device having a wireless communication function, an in-vehicle device, a wearable device, a computing device, or other processing device connected to a wireless modem. Terminals can be called different names in different networks, such as: user equipment, mobile stations, subscriber units, stations, cellular phones, personal digital assistants, wireless modems, wireless communication devices, handheld devices, laptops, cordless phones, Wireless local loop station, etc. For convenience of description, the present application is simply referred to as a terminal. A base station (BS), also referred to as a base station device, is a device deployed in a radio access network to provide wireless communication functions. The name of a base station may be different in different wireless access systems. For example, in a Universal Mobile Telecommunications System (UMTS) network, a base station is called a Node B, and in long term evolution (long term evolution) The base station in the LTE network is called an evolved NodeB (eNB or eNodeB), and the base station in the new radio (NR) network is called a transit reception point (TRP) or a next-generation node. B (generation node B, gNB), or other base stations in various evolved networks may also use other names. This application is not limited to this.

Some terms or concepts in this application are described below.

In the embodiment of the present application, the time-frequency resource refers to a resource corresponding to the determined time domain and the determined frequency domain; specifically, the time domain resource may be a symbol or a time slot or a subframe, and the frequency domain resource It can be in units of subcarriers or resource blocks. The symbols herein are also referred to as time domain symbols. In the present application, symbols and time domain symbols may be equivalent unless otherwise specified.

A resource block (RB) is usually 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 time-frequency resource, which can correspond to one or more symbols in the time domain, and can correspond to one or more sub-carriers or RBs or RB groups in the frequency domain, for example, one or more sub-carriers* 1 time domain symbol as a time-frequency resource unit, or one or more RB*1 time domain symbols as time-frequency resource units, or all or part of RB*1 time-domain symbols allocated to eMBB services as time-frequency resources unit. The time-frequency resource unit may be pre-defined, or may be configured by high-level signaling, such as radio resource control (RRC) signaling, which is not limited in this embodiment of the present application.

The embodiment of the present application provides a communication method, where the communication method can be applied to a scenario in which the first service data in the uplink transmission preempts the transmission resource that has been allocated to the second service data. 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 the same type but different quality of service (QoS) requirements. The service data is not limited in this embodiment of the present application.

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

For convenience of description and understanding, in the following description, the first service data is the URLLC service data, the second service data is the eMBB service data, the first communication device is the terminal, and the second communication device is the network device. . It can be understood that the first service data can be carried by the first data channel, and the second service data can be carried by the second data channel, and the first time-frequency resource resource used for transmitting the first service data can be understood as the first data. The first time-frequency resource of the channel, the second time-frequency time-frequency resource allocated to the second service data can be understood as the second time-frequency resource allocated to the second data channel, and the first service data is used for the second service data time-frequency resource. The preemption can be understood as the 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 applicable to a time-frequency resource preemption scenario between two different types of service data of the same terminal, including:

S101. The terminal sends the first indication information to the network device.

In a possible manner, when the terminal has URLLC service data to be sent to the network device, if the network device has allocated the time-frequency resource to the eMBB service data of the terminal, the URLLC service data may be allocated to the eMBB service data. The frequency resource is preempted, that is, the URLLC service data is transmitted using part or all of the time-frequency resources that have been 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 pre-emptive time-frequency resource allocated to the eMBB service data, and is therefore part or all of the second time-frequency resource, that is, the second time-frequency resource includes the first time-frequency resource. Resources. It can be understood that the first time-frequency resource used by the URLLC service data can also be referred to as a first time-frequency resource for transmitting URLLC service data.

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

The manner in which the first indication information indicates the first time-frequency resource may be multiple, for example, may be indicated by an uplink control information (UCI) or a sequence, which is not limited by the embodiment of the present application. It can be understood that the first time-frequency resource is indicated by a 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 in a slot or a subframe or a mini-slot or a sub-time Subslot or the k-th symbol of the transmission time interval (TTI) to the last symbol, where k is smaller than a slot or a subframe or mini-slot (mini- Slot) or the number of symbols of a subslot or a transmission time interval (TTI).

It can be understood that the first indication information may use the second time-frequency resource, or may use the time-frequency resource other than the second time-frequency resource.

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

In a possible manner, the time domain location information of the first time-frequency resource includes: at least one of a time domain start location, a time domain end location, and a time domain length of the first time-frequency resource, or may be directly the first Time domain location information of time-frequency resources. It can be understood that the time domain location of the first time-frequency resource can be determined by using any two or more of the time domain start location, the time domain end location, and the time domain length of the first time-frequency resource. If only one of the time domain start position, the time domain end 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 the time domain start position of the first time-frequency resource, the time domain end position or the time domain length of the first time-frequency resource may be predefined or determined by signaling, thereby combining The time domain location of the first time-frequency resource can be determined.

In a possible manner, in order to indicate the time domain location 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-domain resource unit in the time domain. The time domain resource unit herein may be one or more time domain symbols, or may be one or more time slots. Assuming that the second time-frequency resource corresponds to one time slot in the time domain, that is, corresponding to 14 time domain symbols, the 14 time domain symbols can be divided into T time domain resource units, for example, divided into 14 or 7 time domains. Resource unit, ie T equals 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 by using a bit bitmap of length T, where each bit in the bit bitmap and the second time-frequency resource Time domain resource units correspond one-to-one.

In a possible manner, the frequency domain location information of the first time-frequency resource may include at least one of a frequency domain start location, a frequency domain end location, and a frequency domain length of the first time-frequency resource, or may be directly the first Frequency domain location information of time-frequency resources. It can be understood that the frequency domain location of the first time-frequency resource can be determined by using any two or more of the frequency domain start location, the frequency domain end location, and the frequency domain length of the first time-frequency resource. The first indication information indicates only one of a frequency domain start position, a frequency domain end position, and a frequency domain length of the first time-frequency resource, and other information may be predefined or indicated by other signaling. For example, if the first indication information indicates the frequency domain start position of the first time-frequency resource, the frequency domain end position or the frequency domain length of the first time-frequency resource may be predefined or determined by signaling, thereby combining The frequency domain location of the first time-frequency resource can be determined.

In a possible manner, in order 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 according to the granularity of the frequency-domain resource unit in the frequency domain. The frequency domain resource unit here may be one or more RBs, or may be one or more RB groups. It is assumed that the second time-frequency resource corresponds to 100 RBs in the frequency domain, and the 100 RBs can be divided into F frequency-domain resource units, for example, into 10 frequency-domain resource units, that is, F is equal to 10. The first indication information may be used to indicate a frequency domain position of the first time-frequency resource in the second time-frequency resource by using a bit bitmap of length F, where each bit in the bit bitmap and the frequency domain in the second time-frequency resource Resource units correspond 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 quantity of the time-frequency resource unit, or may be directly It is the location of the time-frequency resource unit of the first time-frequency resource. It can be understood that the first time-frequency can be determined by any two or more of the time-frequency resource unit start position, the time-frequency resource unit end position, and the number of time-frequency resource units of the first time-frequency resource. The time-frequency resource of the resource, if the first indication information indicates only one of the start position of the time-frequency resource unit of the first time-frequency resource, the end position of the time-frequency resource unit, and the number of time-frequency resource units, then the other The information may be predefined or indicated by other signaling. For example, if the first indication information indicates the start position of the time-frequency resource unit of the first time-frequency resource, the end position of the time-frequency resource unit of the first time-frequency resource or the number of time-frequency resource units may be predefined or passed. The signaling is determined to determine, in combination, the time-frequency location of the first time-frequency resource.

In a possible manner, in order to indicate the location 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 location of the time-frequency resource unit of the first time-frequency resource in the second time-frequency resource by using a bit bitmap of length S. Wherein each bit in the bitmap is in one-to-one correspondence with 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. The different values of the fields represent different first time-frequency resource information.

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

Optionally, the first indication information may be used to indicate the number of time-frequency resource units of the first time-frequency resource in an explicit manner, and the first time-frequency resource start position is implicitly indicated, such as a default first time-frequency resource. The starting position is started from the Xth time-frequency resource unit after the time-frequency resource unit of the UCI, and X is a positive integer, and the X may be predefined or configured by signaling; or An indication information indicates the number of time-frequency resource units of the first time-frequency resource and the information of the starting position in an explicit manner, for example, a part of the bits in the first indication information is used to indicate a time-frequency resource unit of the first time-frequency resource. The number of bits is used to indicate the starting position of the first time-frequency resource, or the first indication information indicates the combination of the number of time-frequency resource units of the first time-frequency resource and the starting position.

In this application, the signaling may be RRC signaling, media access control signaling, or physical layer signaling. The specific form of signaling is not limited in this application.

The following describes an example of different ways of indicating the first time-frequency resource in the case where the first time-frequency resource is indicated by the UCI mode.

(1) Displaying, by UCI, the number of time-frequency resource units indicating the first time-frequency resource, implicitly indicating that the first time-frequency resource starting position assumes that X is 1, that is, the starting position of the first time-frequency resource is from the UCI. The first time-frequency resource unit after the time-frequency resource unit begins. The value of the field used to indicate the first time-frequency resource in the UCI indicates the number of time-frequency resource units of the first time-frequency resource, for example, the binary value of the field used to indicate the first time-frequency resource is “11”, That is to say, the value is 3, indicating that the number of time-frequency resource units of the first time-frequency resource is 3. It is to be understood that, in the embodiment of the present application, the value of X is not limited, and the number of bits used to indicate the field of the first time-frequency resource is not limited.

(2) The number of time-frequency resource units of the first time-frequency resource and the starting position are all explicitly indicated

The first two bits in the field used to indicate the first time-frequency resource in the UCI indicate 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, The value of the field used to indicate the first time-frequency resource is “1101”, and the number of time-frequency resource units of the first time-frequency resource is 3, and the starting position is the starting position of the first time-frequency resource. The first time-frequency resource unit after the time-frequency resource unit of the UCI starts. It can be understood that, in the embodiment of the present application, which bits represent the number of time-frequency resource units of the first time-frequency resource, and which bits represent the starting position of the first time-frequency resource are not limited, and The number of time-frequency resource units of the frequency resource or the number of bits indicating the start position of the first time-frequency resource is not limited.

Alternatively, the value of the field used to indicate the first time-frequency resource in the UCI may be corresponding to the number of the time-frequency resource units of the first time-frequency resource and the starting position, 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 synchronize sequence (PSS), or a ZC sequence, or a secondary synchronization sequence ( The sequence of the sequence of the second sequence, the SSS, and the like, the embodiment of the present application does not limit the type of the sequence. For example, taking the m sequence of length 12 as an example, the sequence is mapped to consecutive 12 subcarriers in the frequency domain. For a certain m sequence of length 12, there are 12 different cyclic shifts in the frequency domain. Sequences obtained by these 12 different cyclic shifts can be numbered, and numbers 0 to 11 correspond to the 12 sequences, respectively.

In one possible way, 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 of the base sequence. The length of the m sequence determines how many cyclic shifts the m sequence has. There are N different cyclic shifts for the m sequence of length N, where N is a positive integer.

The first time-frequency resource indicated by the sequence can be understood as an implicit manner, and the time-frequency resource occupied by the sequence itself is associated with the first time-frequency resource.

In a possible manner, the symbol of the sequence also indicates the time domain location of the URLLC service data, and the frequency of the frequency domain resource occupied by the sequence used to remove the first indication information in the frequency domain resource for transmitting the eMBB service data. The domain resource is a frequency domain resource of the URLLC service data, and thus the first time-frequency resource can be indicated.

As shown in FIG. 2, the shaded gray portion in the figure represents the first time-frequency resource, the white portion in the figure represents the time-frequency resource occupied by the first sequence, and the dark gray portion represents the time-frequency resource of the eMBB service data. It can be understood that the dark gray portion, the gray shaded portion, and the white portion are combined to be a time-frequency resource allocated by the network device to the eMBB service data.

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

In another possible manner, the frequency domain position occupied by the sequence used by the first indication information also indicates the frequency domain location where the URLLC service data is located, and the symbolic representation between the start symbol and the termination symbol of the sequence. The time domain location where the URLLC service data is located, that is, the frequency domain location and the time domain location of the time-frequency resource that the URLLC service data preempts are indicated by the first indication information, as shown in the figure. In Fig. 3, the gray shaded portion indicates the first time-frequency resource, the white portion indicates the start symbol and the end symbol of the sequence, and the dark gray portion indicates the time-frequency resource of the eMBB service data. It can be understood that the dark gray portion, the gray shaded portion, and the white portion are combined to be a time-frequency resource allocated by the network device to the eMBB service 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 location where the URLLC service data is located, and the frequency domain location of the URLLC service data and the eMBB service data. The frequency domain location is the same, that is, the time domain location of the time-frequency resource preempted by the URLLC service data is indicated by the first indication information, and the frequency domain location of the time-frequency resource preempted by the URLLC service data may be predefined or passed other signaling. Configured. It can be understood that the time-frequency resource used by the URLLC service data is to remove the time-frequency resource used by the first indication information. As shown in FIG. 4, the shaded gray portion indicates the first time-frequency resource, the white portion indicates the start symbol and the end symbol of the sequence, and the dark gray portion indicates the time-frequency resource of the eMBB service data. It can be understood that the dark gray portion, the gray shaded portion, and the white portion are combined to be a time-frequency resource allocated by the network device to the eMBB service data.

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

After receiving the uplink information that is sent by the terminal and including the first indication information, the network device obtains the first indication information by using the detection, so that the first time-frequency resource can be determined according to the first indication information. For details on how to determine the first time-frequency resource, refer to the description of S101, and no further details are provided here.

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

Correspondingly, the network device receives the URLLC service data on the first time-frequency resource.

It can be understood that, in the embodiment of the present application, the sequence between S101 and S103 is not distinguished and limited. For example, S103 may be executed before or after S101 or at the same time, and the order between S102 and S103 is not Distinction and limitation are made, and the specific order is determined by the inherent logic of the communication method.

The communication method of the embodiment of the present invention, by using the uplink control information or the sequence, explicitly or implicitly indicates the uplink preempted time-frequency resource to the network device, so that the network device can receive the URLLC service data according to the received first indication information. The URLLC service data preempts the time-frequency resources of the same terminal for transmitting the eMBB service data, which can improve the reliability of transmitting the URLLC service data and reduce the transmission delay of the URLLC service data. Since the time-frequency resources of the eMBB service data are based on scheduling, and have better channel quality than the unlicensed time-frequency resources, the URLLC service data is transmitted through the time-frequency resources of the eMBB service data, and the URLLC service data can be transmitted. Reliability.

Further, in the scenario that the URLLC service data can use the unlicensed resource, the terminal that concurrently transmits the URLLC service data and the eMBB service data uses the scheduling-based resource to perform the uplink transmission of the URLLC service data. More unlicensed resources are vacated 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, the first indication information has a corresponding relationship with the first time-frequency resource, and may also have a corresponding relationship with the MCS and the TBS of the URLLC service data. After receiving the first indication information, the network device may also according to the first indication. The information determines the MCS and TBS of the URLLC service data. In a possible manner, the base station configures at least one combination of the MCS and the TBS by using high layer signaling, for example, RRC signaling, and the terminal indicates the MCS and the TBS of the URLLC service data by using the first indication information. A combination of MCS and TBS can be referred to as an MCS/TBS style. By indicating the MCS/TBS pattern of the URLLC service data, the signaling overhead specifically indicating the MCS and the TBS can be reduced. It can 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, a two-bit field or an information bit. The MCS/TBS pattern may be indicated by a sequence different from the first indication information.

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

As shown in the following table 2, the field includes 2 bits as an example, and a manner of indicating the URLC service data MCS/TBS pattern by UCI is illustrated. It can be understood that the 2-bit field herein may be in the first indication information. The field may also be a 2-bit field in other indication information.

Table 2

UCIUCI	含义meaning
0000	MCS/TBS样式0MCS/TBS style 0
0101	MCS/TBS样式1MCS/TBS style 1
1010	MCS/TBS样式2MCS/TBS style 2
1111	MCS/TBS样式3MCS/TBS style 3

For example, one embodiment of the MCS/TBS pattern 0 is that the modulation mode is quadrature phase shift keying (QPSK), and the TBS is 504 bits. The MCS/TBS pattern of the embodiment of the present application is not limited thereto.

As shown in the following Table 3, an m sequence of length 12 is taken as an example. The 12 types of cyclic shifts are numbered from 0 to 11, and a manner of indicating the MCS/TBS pattern of the URLLC service data by sequence cyclic shift is exemplified.

table 3

序列循环移位的编号Sequence cyclic shift number	含义meaning
00	MCS/TBS样式0MCS/TBS style 0
11	MCS/TBS样式1MCS/TBS style 1
22	MCS/TBS样式2MCS/TBS style 2
33	MCS/TBS样式3MCS/TBS style 3
44	MCS/TBS样式4MCS/TBS style 4
55	MCS/TBS样式5MCS/TBS style 5
66	MCS/TBS样式6MCS/TBS style 6
77	MCS/TBS样式7MCS/TBS Style 7
88	MCS/TBS样式8MCS/TBS style 8
99	MCS/TBS样式9MCS/TBS Style 9
1010	MCS/TBS样式10MCS/TBS style 10
1111	MCS/TBS样式11MCS/TBS style 11

Optionally, the first indication information may also be used to indicate a subcarrier spacing of the URLLC service data, that is, the first indication information may correspond to the first time-frequency resource, and may also be related to the MCS and TBS of the URLLC service data. At least one of the mappings has a corresponding relationship, and may also have a corresponding relationship with the subcarrier spacing of the URLLC service data. After receiving the first indication information, the network device may also determine the subcarrier spacing of the URLLC service data according to the first indication information. In a possible manner, the network device configures at least one optional subcarrier spacing for the URLLC service data by using the high layer signaling, and the terminal indicates the subcarrier spacing of the URLLC service data by using the first indication information. By indicating the subcarrier spacing of the URLLC service data by using the first indication information, the system parameters of the URLLC service data can be configured more flexibly. The system parameters herein may also be called numerology in some cases. It can 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 an information bit, or may be The subcarrier spacing is indicated by other indication information different from the first indication information. The indication information here can be indicated by means of UCI or a sequence.

As shown in the following Table 4, taking the field including 2 bits as an example, a manner of indicating subcarriers of URLLC service data by UCI is exemplified.

Table 4

UCIUCI	子载波间隔Subcarrier spacing
0000	15千赫兹(kilohertz，kHz)15 kHz (kilohertz, kHz)
0101	30kHz30kHz
1010	60kHz60kHz
1111	120kHz120kHz

One possible way for the sub-carrier spacing to be indicated by the sequence may be that each sequence-cycle shift corresponds to one sub-carrier spacing, and different sequence-cycle shifts may correspond to different or identical sub-carrier spacings. For example, an m sequence of length 12 is taken as an example, wherein the number of 12 kinds of cyclic shifts is 0 to 11, and the subcarrier spacing corresponding to cyclic shift 0-3 is 15 kHz, and the cyclic shift is 4-7. The subcarrier spacing is 30 kHz, and the subcarrier spacing corresponding to cyclic shift 8-11 is 60 kHz.

In summary, that is, the first indication information may indicate the first time-frequency resource, and may also indicate the sub-carrier spacing of the URLLC service data and/or the MCS/TBS pattern of the URLLC service data.

It is to be understood that, before the step S101, the terminal may further include: the terminal receiving, by the network device, third indication information, where the third indication information is used to indicate that the terminal can preempt the second time-frequency resource that has been allocated for transmitting the eMBB service data, Used to transmit URLLC service data. After receiving the third indication information, the terminal may perform S101 if necessary. The third indication information may be carried by high layer signaling, such as RRC signaling. Optionally, the network device may determine, according to the capability information reported by the terminal, whether the terminal is configured to perform preemption.

It can be understood that the third indication information may be a field, which may indicate that the terminal can preempt the second time-frequency resource that has been allocated for transmitting the eMBB service data, and may also indicate that the terminal cannot preempt the service that has been allocated for transmitting the eMBB service. The second time-frequency resource of the data.

In order to further reduce the complexity of the network device blindly detecting the first indication information, the first time-frequency resource may be notified by means of two-level indication. In addition, in addition to notifying the network device of the first time-frequency resource, the two-level indication manner may also be used to notify the subcarrier spacing of the URLLC service data and/or the MCS/TBS pattern of the URLLC service data, as shown in FIG. A further embodiment of the present application provides a communication method, where the method may include:

S501: The terminal sends the 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, used to indicate that preemption occurs, where the preemption indicates that the URLLC service occurs. The data occupies the case of the second time-frequency resource allocated to the eMBB service data.

In a possible manner, the second indication information may be that the first indication information needs to be received by the UCI or the second sequence indication. It can be understood that the UCI or the second sequence indication can also be understood as carrying the second indication information in the UCI or the second sequence.

For example, the second sequence indicates that the first indication information needs to be received, and the second sequence length is 12, which is mapped on 12 consecutive subcarriers of one symbol. In one possible manner, the second sequence is located. The RB is the central RB of the second time-frequency resource, which can improve the detection efficiency of the network device. Assuming that the number of RBs corresponding to the second time-frequency resource is from the Pth RB to the Qth RB, the number M of the center RB of the second time-frequency resource is P+floor((QP)/2) or P+ceil( (QP)/2), where P and Q are both non-negative integers, and P is less than Q, floor is rounded down, and ceil is rounded up. For example, P is equal to 0, Q is equal to 10, then M is equal to 5; P is equal to 0, Q is equal to 11, and M is equal to 5 or 6.

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

S502. The terminal sends the first indication information to the network device.

For example, 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 be specifically referred to the corresponding description of the foregoing embodiment, and details are not described herein again.

It is to be understood that S501 may be performed before S502 or may be performed simultaneously with S502, which is not limited in this embodiment of the present 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 may be further detected; if the network device does not detect the second indication information, the first indication information may not be detected. 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 that the network device receives the first indication information.

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

S504. The terminal sends the URLLC service data on the first time-frequency resource.

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

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

In the embodiment of the present application, by introducing the second indication information, the complexity of the first indication information of the base station blind detection can be effectively reduced. When the second indication information is blindly detected, the subsequent secondary blind detection can be performed, thereby reducing the false alarm. Probability.

Corresponding to the implementation of the terminal in the communication method described in FIG. 1 or FIG. 5, the embodiment of the present application further provides a corresponding communication device, and the communication device includes a corresponding module for executing each part in FIG. 1 or FIG. . The module can be software, hardware, or a combination of software and hardware. The communication device can be a terminal or a chip that can be used for the terminal.

As shown in FIG. 6, the communication device 600 can include:

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

Optionally, the generating module 601 is 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.

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

Optionally, the transceiver module 602 is further configured to send the 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 can preempt the second time-frequency resource that has been allocated for transmitting the second service data, for transmitting the first service data. .

The communication device 600 may further include a processing module 603, configured to determine, according to the received third indication information, that the second time-frequency resource that has been allocated for transmitting the second service data can be preempted for transmitting the first service data.

For the first indication information, the second indication information, and the third indication information, reference may be made to related descriptions in the foregoing method embodiments, and details are not described herein again.

It can be understood that the transceiving 602 can be used to implement all of the corresponding transmitting and receiving actions in the embodiment shown in FIG. 1 or 5.

Optionally, the communication device 600 may further include a storage module, configured to store at least one of parameters, information, and instructions.

It should be noted that the operations and implementation manners of the modules in the communication device 600 in the embodiment of the present application may be further referred to the corresponding description in the method embodiments, and details are not described herein again.

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

The processor may include a central processing unit (CPU), a digital signal processor (DSP), a microcontroller (Microcontroller Unit (MCU), and an application specific integrated circuit (ASIC). Or at least one of a Field-Programmable Gate Array (FPGA).

The embodiment of the present application further provides a communication device, which may be a terminal or a chip that can be used for a terminal, and the communication device may include: a memory and at least one processor, where the memory is used to store an instruction or a program. The at least one processor is configured to invoke an instruction or a program in the memory to implement operations corresponding to the terminal in any of the above various embodiments. The processor and the memory may be provided separately or integrated.

Corresponding to the implementation of the network device in the communication method described in FIG. 1 or FIG. 5, the embodiment of the present application further provides a corresponding communication device, where the communication device includes corresponding portions for performing each part in FIG. 1 or FIG. Module. The module can be software, hardware, or a combination of software and hardware. The communication device can be a network device or a chip that can be used for a network device. As shown in FIG. 7, the communication device can include:

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

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

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

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

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

It can be understood that the transceiver module 701 can be used to implement all corresponding transmitting and receiving actions in the embodiment shown in FIG. 1 or FIG. The processing module 702 can be used to implement all the corresponding processing actions in the embodiment shown in FIG. 1 or FIG. 5.

Optionally, the communication device 700 may further include a storage module, configured to store at least one of parameters, information, and instructions.

It should be noted that the operations and implementation manners of the modules in the communication device 700 in the embodiment of the present application may be further referred to the corresponding description in the method embodiments, and details are not described herein 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 memories; or by one or more processors. And the transceiver; or implemented by one or more processors, transceivers, and memories, which are not limited by the embodiments of the present application. The processor can also be used to implement all of the corresponding processing actions in the embodiment shown in FIG. 1 or 5. The processor and the memory may be provided separately or integrated.

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

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

The processing component 801 is configured to implement an operation corresponding to the generating module 601 described above;

The transceiver component 802 is configured to implement operations corresponding to the transceiver module 702.

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

The processing component 801 is configured to implement operations corresponding to the processing module 702 described above;

The transceiver component 802 is configured to implement operations corresponding to the transceiver module 701.

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

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

In one possible design, the various components of communication device 800 can be implemented by corresponding circuitry.

It should be noted that the operations and implementation manners of the components in the communication device 800 in the embodiment of the present application may be further referred to the corresponding description in the method embodiments, and details are not described herein again.

The embodiment of the present application further provides a communication device, which may be a network device, or a chip that can be used for a network device, and the communication device may include: a memory and at least one processor, where the memory is used to store an instruction or a program. The at least one processor is configured to invoke an instruction or a program in the memory to implement an operation corresponding to the network device in any one of the foregoing various embodiments. The processor and the memory may be provided separately or integrated.

Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of the two. Whether such functionality is implemented by hardware or software depends on the design requirements of the particular application and the overall system. Those skilled in the art can implement the described functions using various methods for each specific application, but such implementation should not be construed as being beyond the scope of the embodiments of the present application.

The techniques described herein can be implemented in a variety of ways. For example, these techniques can be implemented in a combination of hardware, software, or hardware. For hardware implementations, processing units for performing these techniques at a communication device (eg, 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 device (DSPD), application specific integrated circuit (ASIC), programmable logic device (PLD), field programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or In any combination. A general purpose processor may be a microprocessor. Alternatively, the general purpose processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented by a combination of computing devices, such as 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. achieve.

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

In the above embodiments, it may be implemented in whole or in part 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. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)). Combinations of the above should also be included within the scope of the computer readable media.

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

The embodiments of the present application described above are not intended to limit the scope of the present application.

Claims

A communication method, comprising:

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

Transmitting the first service data on the first time-frequency resource.
The method according to claim 1, wherein the first indication information is used to indicate that the first time-frequency resource information used for transmitting the first service data comprises: the first indication information is used to indicate the first time The number of time-frequency resource units of the frequency resource; or the first indication information is used to indicate information about the number of time-frequency resource units of the first time-frequency resource and the start position of the time-frequency resource.
The method according to claim 1, wherein the first indication information is used to indicate that the first time-frequency resource information used for transmitting the first service data comprises: the first indication information is used to indicate the first time Time domain start location information and frequency domain location information of the frequency resource; or the first indication information is used to indicate time domain start location information, time domain termination location information, and frequency domain location information of the first time-frequency resource.
The method according to claim 2 or 3, wherein 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.
The method according to any one of claims 1 to 4, wherein the first indication information is further used to indicate a subcarrier spacing for transmitting the first service data.
The method according to any one of claims 1-5, wherein the first indication information is carried in uplink control information UCI or in a first sequence.
The method according to any one of claims 1-6, further comprising: transmitting second indication information, the second indication information being used to indicate that the first indication information needs to be received.
The method of claim 7 wherein said second indication information is carried in a second sequence.
The method according to claim 8, wherein the resource block RB in which the second sequence is located is a center RB of the second time-frequency resource.
The method according to any one of claims 1 to 9, wherein before the sending the first indication information, the method further comprises:

The third indication information is received, where the third indication information is used to indicate that the terminal can preempt the second time-frequency resource that has been allocated for transmitting the second service data for transmitting the first service data.
The method according to any one of claims 1 to 10, wherein the first service data is URLLC service data, and the second service data is eMBB service data.
A communication method, comprising:

Receiving first indication information, where the first indication information is used to indicate first time-frequency resource information used for transmitting the first service data, where the first time-frequency resource is a second time-frequency resource allocated to the second service data. Part of the first service data and the second service data being uplink service data of the same terminal;

Determining, according to the first indication information, the first time-frequency resource;

Receiving the first service data on the first time-frequency resource.
The method according to claim 12, wherein the first indication information is used to indicate that the first time-frequency resource information used for transmitting the first service data comprises: the first indication information is used to indicate the first time The number of time-frequency resource units of the 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 start position; or the first indication information is used for And indicating time domain start location information and frequency domain location information of the first time-frequency resource; or, the first indication information is used to indicate time domain start location information, time domain termination location information, and frequency of the first time-frequency resource Domain location information.
The method according to claim 13, wherein 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.
The method according to claim 13 or 14, wherein the first indication information is further used to indicate a subcarrier spacing of the first service data.
The method according to any one of claims 12-15, wherein the first indication information is carried in uplink control information or a first sequence.
The method according to any one of claims 12-16, further comprising: receiving second indication information, the second indication information being used to indicate that the first indication information needs to be received.
The method of claim 17 wherein said second indication information is carried in a second sequence.
The method according to claim 18, wherein the resource block in which the sequence is located is a central resource block of the second time-frequency resource.
The method according to any one of claims 12 to 19, further comprising: before the receiving the first indication information,

Sending the third indication information, where the third indication information is used to indicate that the terminal can preempt the second time-frequency resource that has been allocated to the second service data for transmitting the first service data.
The method according to any one of claims 12 to 20, wherein the first service data is URLLC service data, and the second service data is eMBB service data.
A communication device for implementing the communication method according to any one of claims 1-11.
A communication device for implementing the communication method according to any one of claims 12-21.
A computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 11.
A computer readable storage medium comprising instructions which, when executed on a computer, cause a computer to perform the method of any one of claims 12 to 21.
A program product, characterized in that the program product comprises instructions which, when executed, cause a communication device to carry out the communication method according to any one of claims 1-11 or 12-21.
A communication system comprising the communication device of claim 22 and the communication device of claim 23.