CN111726864A

CN111726864A - Communication method and device

Info

Publication number: CN111726864A
Application number: CN201910215905.3A
Authority: CN
Inventors: 王俊伟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-09-29
Anticipated expiration: 2039-03-21
Also published as: CN111726864B

Abstract

The application provides a communication method and a communication device, comprising the following steps: the first device receives first control information and second control information, wherein the first control information schedules the first device to receive first data on a time-frequency resource corresponding to a second time unit set, the second control information schedules the first device to send second data on a time-frequency resource corresponding to a third time unit set intersected with the second time unit set, and the first device determines that an attribute of a time unit corresponding to the intersection of the second time unit set and the third time unit set is an uplink or a downlink, so that the requirement of data service transmission delay is met.

Description

Communication method and device

Technical Field

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

Background

As a new Generation mobile communication technology, the rapid development of the fifth Generation mobile communication (5th Generation, 5G) technology meets the application requirements of the intelligent manufacturing transformation for wireless networks. The three application scenarios in 5G are: enhanced Mobile Broadband (eMBB), Low-Latency and high-reliability Communication (URLLC), and Massive Internet of things (mMTC).

The three application scenarios have different requirements on data transmission delay. When data is transmitted, for the terminal equipment, a plurality of scheduling information scheduling the same time-frequency resource to transmit data exists. At present, the time-frequency resource scheduled by the scheduling information received late by the terminal device can only be the non-scheduled time-frequency resource, so that the data with high requirement on low time delay cannot be transmitted in time.

Disclosure of Invention

The application provides a communication method and device, which can determine the symbol attribute on a time unit corresponding to a time-frequency resource, improve the data transmission rate and meet the low-delay requirement of a data service.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, a communication method is provided, which may be applied to a terminal device, or may be applied to a communication apparatus that may support the terminal device to implement the method, for example, the communication apparatus includes a chip system, and for convenience, this application is collectively referred to as a first device. The method comprises the following steps: receiving first configuration information, where the first configuration information is used to indicate a first attribute of each time unit in a first time unit set corresponding to a first time-frequency resource, and the first attribute includes a flexible symbol attribute; receiving first control information, where the first control information is used to schedule the terminal device to receive first data on a time-frequency resource corresponding to a second time unit set, where the second time unit set is a subset of the first time unit set; receiving second control information, wherein the second control information is used for scheduling the terminal equipment to send second data on a time-frequency resource corresponding to a third time unit set, and the third time unit set and the second time unit set have an intersection; then, a second attribute of each time unit in a fourth time unit set is determined, the second attribute includes an uplink or a downlink, and the fourth time unit set is an intersection of the second time unit set and the third time unit set. When a plurality of pieces of control information schedule the first device to transmit data on the same time-frequency resource, the first device needs to determine the type of data transmitted on the same time-frequency resource, that is, whether the first device transmits data or receives data on the same time-frequency resource, so as to improve the transmission efficiency of data and meet the low-delay requirement of data service.

For the received first configuration information, the first configuration information may be used to indicate that an attribute of each time unit in a first time unit set corresponding to a first time-frequency resource of the first device is a flexible symbol attribute, that is, the first device may send uplink information or downlink information in each time unit in the first time unit set, and receive first control information and second control information, where the first control information is used to schedule the first device to receive first data on a subset of the first time unit set, that is, on a time-frequency resource corresponding to a second time unit set, the second control information is used to schedule the first device to send second data on a time-frequency resource corresponding to a third time unit set, and the third time unit set intersects the second time unit set, that is, the first control information and the second control information schedule the first device to transmit data on the same time unit, that is, uplink data and downlink data are transmitted, and the first device cannot meet the requirements of the first control information and the second control information in the same time unit, therefore, the first device needs to determine to transmit the uplink or downlink data in the time unit where the collision occurs, so that the first device can reasonably use the corresponding time-frequency resource to transmit the data, and the transmission rate of the data is improved.

In one possible design, the first device determining the second attribute for each time unit in the fourth set of time units includes: and the first equipment determines the second attribute of each time unit in the fourth time unit set according to the service priority of the first data and the service priority of the second data. When a plurality of pieces of control information schedule the first equipment to transmit the data, the first equipment schedules the first equipment to transmit the data on the corresponding time unit according to the plurality of pieces of control information, and determines the attribute of the time unit in which the data is transmitted by the first equipment and conflicts, so that the data needing to be transmitted first is preferentially met, and the data transmission rate is improved.

For example, the determining, by the first device, the second attribute of each time unit in the fourth time unit set according to the service priority of the first data and the service priority of the second data includes:

the first device determines the service priority of the first data and the service priority of the second data, and determines that the second attribute of each time unit in the fourth time unit set is downlink when the service priority of the first data is higher than the service priority of the second data; or the like, or, alternatively,

and the first device judges the service priority of the first data and the service priority of the second data, and determines that the second attribute of each time unit in the fourth time unit set is uplink under the condition that the service priority of the first data is not higher than the service priority of the second data.

With reference to the first aspect, in a possible implementation manner, before the determining, by the first device, the service priority of the first data and the service priority of the second data, the method further includes: the first device obtains indication information, where the indication information is used to indicate a service priority of the first data and/or a service priority of the second data.

The first device acquires the service priority of the first data and the service priority of the second data so as to determine whether to transmit the first data or the second data preferentially.

With reference to the first aspect, in a possible implementation manner, the indication information includes a radio network temporary identity RNTI.

With reference to the first aspect, in a possible implementation manner, the determining, by the first device, the service priority of the first data and the service priority of the second data includes: and the first equipment judges the service priority of the first data and the service priority of the second data according to the control search space.

In another possible design, the first device determining the second attribute for each time unit in the fourth set of time units includes: the first device determines a second attribute of each time unit in a fourth set of time units according to the received first control information and the received time sequence of the second control information. When the plurality of control information schedule the first equipment to transmit the data, under the condition that the conflict occurs on the time unit, the first equipment determines the attribute of the time unit of the first equipment for transmitting the data according to the time sequence for receiving the plurality of control information, so that the data needing to be transmitted first is preferentially met, and the data transmission rate is improved.

For example, the first device determining, according to the received first control information and the received second control information, the second attribute of each time unit in the fourth time unit set includes:

in the case that the time of receiving the first control information is earlier than the time of receiving the second control information, the first device determines that the second attribute of each time unit in the fourth time unit set is uplink; or

In a case where the time of receiving the first control information is not earlier than the time of receiving the second control information, the first device determines the second attribute of each time unit in the fourth set of time units as a downlink.

With reference to the first aspect, in a possible implementation manner, the first data includes data carried by a downlink channel or a downlink reference signal.

With reference to the first aspect, in a possible implementation manner, the second data includes data carried by an uplink channel or an uplink reference signal.

In a second aspect, a communication device is provided for implementing the method described in the first aspect above. The communication apparatus is a communication apparatus that implements the method described in the first aspect for a terminal device or a support terminal device, for example, the communication apparatus includes a system-on-chip. For example, the apparatus includes a transceiver module and a processing module, where the transceiver module is configured to receive first configuration information, where the first configuration information is used to indicate a first attribute of each time unit in a first time unit set corresponding to a first time-frequency resource, and the first attribute includes a flexible symbol attribute; a transceiver module, further configured to receive first control information, where the first control information is used to schedule the first device to receive first data on a time-frequency resource corresponding to a second time unit set, and the second time unit set is a subset of the first time unit set; the transceiver module is further configured to receive second control information, where the second control information is used to schedule the first device to send second data on a time-frequency resource corresponding to a third time unit set, and the third time unit set and the second time unit set have an intersection; a processing module, configured to determine a second attribute of each time unit in a fourth time unit set, where the second attribute includes an uplink or a downlink, and the fourth time unit set is an intersection of the second time unit set and the third time unit set.

With reference to the second aspect, in a possible implementation manner, the processing module is specifically configured to determine the second attribute of each time unit in the fourth time unit set according to the service priority of the first data and the service priority of the second data.

With reference to the second aspect, in a possible implementation manner, the processing module is further specifically configured to determine, according to a time sequence of the received first control information and the received second control information, a second attribute of each time unit in a fourth time unit set.

With reference to the second aspect, in a possible implementation manner, the determining, by the processing module, the second attribute of each time unit in the fourth time unit set according to the service priority of the first data and the service priority of the second data specifically includes: the processing module is further specifically configured to determine a service priority of the first data and a service priority of the second data; the processing module is further specifically configured to determine that a second attribute of each time unit in the fourth time unit set is downlink, when the service priority of the first data is higher than the service priority of the second data; or, in the case that the service priority of the first data is not higher than the service priority of the second data, the processing module is further specifically configured to determine that the second attribute of each time unit in the fourth time unit set is uplink.

With reference to the second aspect, in a possible implementation manner, the transceiver module is further configured to acquire indication information, where the indication information is used to indicate a service priority of the first data and/or a service priority of the second data.

With reference to the second aspect, in a possible implementation manner, the indication information includes a radio network temporary identity RNTI.

With reference to the second aspect, in a possible implementation manner, the processing module is further specifically configured to determine, according to a control search space, a service priority of the first data and a service priority of the second data.

With reference to the second aspect, in a possible implementation manner, the determining, by the processing module, the second attribute of each time unit in the fourth time unit set according to the received first control information and the received second control information includes: when the time for receiving the first control information is earlier than the time for receiving the second control information, the processing module is further specifically configured to determine that the second attribute of each time unit in the fourth time unit set is an uplink; or in the case that the time of receiving the first control information is not earlier than the time of receiving the second control information, the processing module is further specifically configured to determine that the second attribute of each time unit in the fourth time unit set is downlink.

With reference to the second aspect, in a possible implementation manner, the first data includes data carried by a downlink channel or a downlink reference signal.

With reference to the second aspect, in a possible implementation manner, the second data includes data carried by an uplink channel or an uplink reference signal.

In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device has a function of implementing a behavior of the terminal device in the above method design. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.

In one possible design, the terminal device may be configured to include a transceiver and a processor, the transceiver being configured to receive first configuration information, the first configuration information is used for indicating a first attribute of each time unit in a first time unit set corresponding to a first time-frequency resource, the first attribute comprises a flexible symbol attribute and is further configured to receive first control information, the first control information is used to schedule the first device to receive first data on time-frequency resources corresponding to a second set of time units, the second set of time units is a subset of the first set of time units and is further configured to receive second control information, the second control information is used for scheduling the first device to send second data on a time-frequency resource corresponding to a third time unit set, and the third time unit set and the second time unit set have an intersection; the processor is configured to determine a second attribute for each time cell in a fourth set of time cells, the second attribute including an uplink or a downlink, the fourth set of time cells being an intersection of the second set of time cells and the third set of time cells.

In a fourth aspect, a communications apparatus is provided that includes a processor. The processor is coupled to the memory and is operable to execute instructions in the memory to implement the method of the first aspect or any of the possible implementations of the first aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, and the processor is coupled to the communication interface.

In one implementation, the communication device is a terminal device. When the communication device is a terminal device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip configured in the first device. When the communication device is a chip configured in the first device, the communication interface may be an input/output interface.

In a fifth aspect, a processor is provided, comprising: input circuit, output circuit and processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor performs the method of the first aspect and any one of the possible implementations of the first aspect.

In a specific implementation process, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example and without limitation, a receiver, the signal output by the output circuit may be output to and transmitted by a transmitter, for example and without limitation, and the input circuit and the output circuit may be the same circuit that functions as the input circuit and the output circuit, respectively, at different times. The embodiment of the present application does not limit the specific implementation manner of the processor and various circuits.

In a sixth aspect, a processing apparatus is provided that includes a processor and a memory. The processor is configured to read instructions stored in the memory, and may receive a signal via the receiver and transmit a signal via the transmitter to perform the method of the first aspect and any possible implementation manner of the first aspect.

Optionally, the number of the processors is one or more, and the number of the memories is one or more.

Alternatively, the memory may be integral with the processor or separate from the processor.

In a specific implementation process, the memory may be a non-transient memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately disposed on different chips.

It will be appreciated that the associated data interaction process, for example, sending the indication information, may be a process of outputting the indication information from the processor, and receiving the capability information may be a process of receiving the input capability information from the processor. Specifically, the data output by the processor may be output to the transmitter, and the input data received by the processor may be from the receiver. The transmitter and receiver may be collectively referred to as a transceiver, among others.

The processing means in the above sixth aspect may be one chip. The processor may be implemented by hardware or software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated with the processor, located external to the processor, or stand-alone.

In a seventh aspect, this embodiment of the present application further provides a computer program product including instructions, which, when run in a communication apparatus, causes the communication apparatus to perform the method in any one of the possible implementation manners of the first aspect and the first aspect.

In an eighth aspect, an embodiment of the present application further provides a computer-readable storage medium, including: computer software instructions; the computer software instructions, when executed in the communication apparatus, cause the communication apparatus to perform the method of any one of the possible implementations of the first aspect and the first aspect as described above.

In a ninth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor and may further include a memory, and is configured to implement the functions of the network device or the terminal device in the foregoing method. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

A tenth aspect provides a communication system comprising the communication apparatus of the second aspect and any possible implementation manner of the second aspect.

Drawings

Fig. 1 is a schematic diagram of a communication system 100 of a method provided by an embodiment of the present application.

Fig. 2 is a schematic diagram of transmission and retransmission of TBs.

FIG. 3 is a schematic diagram of 1 frame structure with SCS of 60 KHz.

Fig. 4 is a schematic diagram of data sequential transmission.

FIG. 5 is a schematic illustration of non-sequential transmission of data.

Fig. 6 is a schematic flow chart of a communication method 600 provided in an embodiment of the present application.

Fig. 7 is a schematic diagram illustrating an example of an attribute of each time unit indicated by each piece of information according to the present application.

Fig. 8 is a schematic diagram showing another example of the attribute of each time unit indicated by the respective information of the present application.

Fig. 9 is a schematic diagram showing another example of the attribute of each time unit indicated by the respective information of the present application.

Fig. 10 is a schematic diagram showing another example of the attribute of each time unit indicated by the respective information of the present application.

Fig. 11 is a schematic diagram illustrating another example of the attribute of each time unit indicated by each piece of information in the present application.

Fig. 12 is a schematic diagram illustrating another example of the attribute of each time unit indicated by the respective information of the present application.

Fig. 13 is a schematic diagram showing an example of an attribute of each time unit in the fourth time unit set according to the present application.

Fig. 14 is a schematic diagram showing another example of the attribute of each time unit in the fourth time unit set according to the present application.

Fig. 15 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Fig. 16 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Fig. 17 is a schematic diagram of a possible structure of a network device according to an embodiment of the present application.

Fig. 18 is a simplified schematic diagram of a possible design structure of a terminal device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long term evolution (Long term evolution, LTE) system, a LTE frequency Division duplex (frequency Division duplex, FDD) system, a LTE Time Division Duplex (TDD), a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a world wide Microwave Access (world interoperability for Microwave Access, future max) communication system, a fifth Generation (5G) system of the th, or a New Radio (NR) system.

For the understanding of the embodiments of the present application, a communication system suitable for the method provided by the embodiments of the present application will be first described in detail with reference to fig. 1. Fig. 1 shows a schematic diagram of a communication system 100 suitable for use in the method provided by the embodiments of the present application. As shown, the communication system 100 may include at least one network device, such as a base station (gNB) in the 5G system shown in fig. 1; the communication system 100 may further include at least one terminal device, such as User Equipments (UEs) 1 to 6 shown in fig. 1. The network device and each terminal device can communicate through a wireless link. For example, the network device may send configuration information to the terminal device, and the terminal device may send uplink data to the network device based on the configuration information; for another example, the network device may send downlink data to the terminal device. Thus, the gNB and UEs 1 to 6 in fig. 1 may constitute one communication system.

The terminal devices in the communication system 100, e.g., UE 4 to UE 6, may also constitute a communication system. For example, UE 4 may control UE 5 and UE 6 to perform corresponding instructions. This is not a limitation of the present application.

It should be understood that the network device in the communication system may be any device having a wireless transceiving function.

A network device is an entity, such as a new generation base station (gdnodeb), in a network side for transmitting or receiving signals. The network device may be a device for communicating with the mobile device. The network device may be an AP in a Wireless Local Area Network (WLAN), a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE), or a relay station or an access point, or a network device in a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved Public Land Mobile Network (PLMN), or a network device in an NR system, etc. In addition, in this embodiment of the present application, a network device provides a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (smallcell), where the small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services. Furthermore, the network device may be other means for providing wireless communication functionality for the terminal device, where possible. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. For convenience of description, in the embodiments of the present application, an apparatus for providing a wireless communication function for a terminal device is referred to as a network device.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may also include a Radio Unit (RU). The CU implements part of the function of the gNB, and the DU implements part of the function of the gNB, for example, the CU implements the function of a Radio Resource Control (RRC) layer, a Packet Data Convergence Protocol (PDCP) layer, and the DU implements the function of a Radio Link Control (RLC), a Media Access Control (MAC), and a Physical (PHY) layer. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or the DU + CU under this architecture. It is to be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in a Radio Access Network (RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

The terminal equipment (UE) in the embodiment of the present application may be a wireless terminal equipment capable of receiving network equipment scheduling and indication information, and the wireless terminal equipment may be a device providing voice and/or data connectivity to a user, or a handheld device having a wireless connection function, or other processing device connected to a wireless modem. Wireless terminal devices, which may be mobile terminal devices such as mobile telephones (or so-called "cellular" telephones, cell phones, computers, and data cards, e.g., mobile devices that may be portable, pocket, hand-held, computer-included, or vehicle-mounted) that exchange language and/or data with a radio access network, may communicate with one or more core networks or the internet via a radio access network (e.g., RAN), may be referred to as a wireless terminal device, e.g., a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a tablet computer (Pad), a computer with wireless transceiving functionality, etc., may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (station), a mobile station (mobile station), a Mobile Station (MS), a remote station (remote station), an Access Point (AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), a Subscriber Station (SS), a Customer Premises Equipment (CPE), a terminal (terminal), a UE, a Mobile Terminal (MT), and the like. The wireless terminal device may also be a wearable device as well as a next generation communication system, e.g. a terminal device in a 5G network or a terminal device in a future evolved PLMN network, a terminal device in an NR communication system, etc.

It should also be understood that fig. 1 is a simplified schematic diagram that is merely illustrated for ease of understanding, and that other network devices or other terminal devices, which are not shown in fig. 1, may also be included in the communication system 100.

To facilitate understanding of the embodiments of the present application, a brief description will first be made of several concepts referred to hereinafter.

1. URLLC, as one of three 5G typical services, has main application scenarios including: unmanned, telemedicine, etc., which place more stringent demands on reliability and latency. URLLC service has extremely high requirement on time delay, and under the condition of not considering reliability, the transmission time delay requirement is within 0.5 millisecond; on the premise of reaching 99.999% of reliability, the transmission delay is required to be within 1ms, so that the time interval of the network equipment for transmitting the service is shortened.

2. Typical eMBB services are: ultra high definition video, Augmented Reality (AR), Virtual Reality (VR), and the like. The data volume of the eMBB service is relatively large and the transmission rate is relatively high, so a relatively long time scheduling unit is generally adopted for data transmission to improve the transmission efficiency.

3. A hybrid automatic repeat request (HARQ) mechanism introduces transmission and retransmission of Transport Blocks (TBs). The TB may be a data block from a higher layer, the sending end may cut the TB into a plurality of Code Blocks (CBs), each CB performs Cyclic Redundancy Check (CRC) and encoding, and if the terminal device decodes all the CBs correctly, feeds back an Acknowledgement (ACK) to the network device to indicate that the TB is received correctly, and the network device will send new TB data after receiving the ACK. If the terminal equipment has an error to any one CB in the received TBs, the terminal equipment feeds back a Negative Acknowledgement (NACK) to the network equipment, and the network equipment will resend the TB after receiving the NACK until the terminal equipment receives the feedback ACK or the number of retransmissions reaches a certain threshold. The ACK and NACK may be collectively referred to as hybrid automatic repeat request (HARQ) information in the communication system. Based on transmission and retransmission of TB, error codes caused by adoption of link adaptation can be efficiently compensated, the data transmission rate is improved, and the data transmission delay is reduced.

As shown in fig. 2, it is a diagram of transmission and retransmission of TBs. In fig. 2, the transmitting end may be a network device, the receiving end may be a terminal device, and the transmission (transmission and reception) process of the TB is as follows:

(1) the method comprises the steps that a sending end divides a TB to be transmitted into 4 coding blocks, namely 4 coding blocks are a coding block 0, a coding block 1, a coding block 2 and a coding block 3 respectively, the sending end adds and codes Cyclic Redundancy Check (CRC) to the 4 coding blocks respectively, and needs to add CRC to the whole TB once and sends the TB to a receiving end;

(2) when receiving the TB, the receiving end demodulates, decodes and checks each coding block of the TB.

(3) If the receiving end successfully checks each coding block, the receiving end sends ACK to the sending end; if the receiving end checks each coding block, the receiving end sends NACK to the sending end as long as one coding block is not successfully checked, and the sending end resends the TB. As shown in fig. 2, if the receiving end fails to check the coding block 0, that is, the receiving end fails to receive the TB successfully, the receiving end will feed back NACK to the transmitting end;

(4) the sending end will resend the TB to the receiving end;

(5) and the receiving end receives the TB again, combines the TB with the data block transmitted last time, and then carries out demodulation, decoding and CRC check. As shown in fig. 2, after the receiving end successfully checks each coding block in the TB transmitted this time, and the entire TB is also successfully checked, the receiving end feeds back ACK to the transmitting end, where the ACK indicates that the TB is successfully received this time.

4. And (5) frame structure. In the NR system, the frame structure is based on a fixed frame length, but Sub-Carrier Space (SCS) of the frame structure is configurable. For example, SCS can be 15KHz, or 30KHz, 60KHz or 120 KHz. The corresponding symbol lengths of the subcarriers with different intervals may be different. As shown in fig. 3, each slot includes 14 OFDM symbols, and the scheduling period of the frame structure is based on the slot. For example, fig. 3 shows a 1 SCS 60KHz frame structure, which includes 10 subframes (subframes), i.e., the subframes numbered 0 to 9 shown in the first row of fig. 3. 1 subframe comprises 4 slots (slots), belonging to a scheduling period, i.e. the start of data can only start at the boundary of the subframe, where the number of each slot is numbered from 0, i.e. the 1 st slot, numbered 0, the 2 nd slot, numbered 1 … th slot, numbered 4, and 1 slot comprises 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the 1 slot is 0.25ms long in total. Where each OFDM symbol is numbered from 0, i.e., the 1 st OFDM symbol, numbered 0, the 2 nd OFDM symbol, the 14 th OFDM symbol, numbered 1 …, numbered 13.

5. A symbolic attribute. The symbol attribute is used for indicating that the symbol is used for the network device to send a downlink signal to the terminal device or for indicating that the terminal device sends an uplink signal to the network device. The symbol attributes comprise 3 types, and the uplink symbol is used for transmitting an uplink signal, namely the terminal equipment sends the uplink signal to the network equipment; the downlink signal is used for transmitting the downlink signal, that is, the network device sends the downlink signal to the terminal device; the flexible symbols are flexible variable symbols, that is, may be used to transmit downlink symbols, and may also be used to transmit downlink symbols, that is, the network device may send downlink signals to the terminal device, and the terminal device may send uplink signals to the network device.

6. And (4) a configuration method of the symbolic attribute. There are many ways to arrange the symbolic attributes, and any of the following ways can be used for explanation, but these 4 ways are only examples provided in the present application, and the present application includes, but is not limited to, the following specific ways:

in the first mode, high-level common signaling configuration, for example, uplink and downlink common configuration messages, performs semi-static timeslot type configuration, that is, a symbol is configured as any one of an uplink symbol, a downlink symbol, and a flexible symbol.

And a second mode, high-level dedicated signaling, for example, uplink and downlink dedicated configuration messages, that is, through dedicated signaling, it is determined that a part of symbols are flexible symbol attributes from the symbol attributes configured by the high-level common signaling, and the symbols are modified into downlink symbols, uplink symbols or the flexible symbols are kept unchanged.

A third mode is that the physical layer common signaling, for example, the slot format indication information, further determines that the flexible symbol defined by the higher layer signaling is a downlink symbol, an uplink symbol, or keeps the flexible symbol unchanged through the physical layer common signaling;

(4) physical layer scheduling signaling: for example, downlink control information is scheduled, i.e., the definition for the flexible symbols is adjusted by physical layer scheduling signaling.

7. And (3) sequential transmission: the scheduling information 1 is sent first, the corresponding scheduling data 1 arrives first, and the corresponding feedback information 1 feeds back first, or relative to the scheduling information 2 later in time, the corresponding scheduling data 2 is not earlier than the scheduling information 1 sent earlier, and the corresponding feedback information 2 is not earlier than the feedback information 1 of the scheduling information 1 sent earlier.

Fig. 4 is a schematic diagram illustrating an example of data sequence transmission. For example, in the nth time slot, the network device sends, to the terminal device, scheduling information 1 through a Physical Downlink Control Channel (PDCCH), where the scheduling information 1 is used to instruct the terminal device to transmit data 1 in the (n + 2) th time slot and to instruct each symbol attribute when transmitting the data 1 in the (n + 2) th time slot, that is, each symbol attribute is an uplink symbol, a downlink symbol, or a flexible symbol in the (n + 2) th time slot, and the scheduling information 1 is also used to instruct the terminal device to send, to the network device, feedback information indicating whether the terminal device successfully receives the data 1 transmitted in each symbol in the (n + 2) th time slot in the (n + 4) th time slot. For another example, in the n +1 th slot, the network device sends scheduling information 2 to the terminal device through the PDCCH, where the scheduling information 2 is used to instruct the terminal device to transmit data 2 in the n +3 th slot and to transmit each symbol attribute when transmitting data 2 in the n +3 th slot, that is, each symbol attribute is an uplink symbol, a downlink symbol, or a flexible symbol in the n +3 th slot, and the scheduling information 2 is also used to instruct the terminal device to send feedback information to the network device in the n + 5th slot, where the feedback information is information that instructs the terminal device whether to successfully receive data 2 transmitted in each symbol in the n +3 th slot. In fig. 4, scheduling information 1 is sent earlier than scheduling information 2, so that transmission data 1 indicated by scheduling information 1 is sent earlier than transmission data 2 indicated by scheduling information 2, and meanwhile, feedback information 1 indicated by scheduling information 1 is sent earlier than feedback information 2 indicated by scheduling information 2; i.e. sequential transmission.

8. Non-sequential transmission: the scheduling information 1 sent first, the corresponding scheduling data 1 arrives later, or the feedback information 1 is fed back later, or the corresponding scheduling data 2 is earlier than the scheduling information 1 sent earlier, or the corresponding feedback information 2 is earlier than the feedback information 1 corresponding to the scheduling information 1 sent earlier, relative to the scheduling information 2 later in time.

Fig. 5 is a schematic diagram illustrating an example of non-sequential data transmission. For example, in fig. 5(a), in the nth slot, the network device sends scheduling information 1 to the terminal device through the PDCCH, where the scheduling information 1 is used to instruct the terminal device to transmit data 1 in the n +3 th slot and to send data 1 in the n +3 th slot, that is, each symbol attribute is an uplink symbol, a downlink symbol, or a flexible symbol in the n +3 th slot, and the scheduling information 1 is also used to instruct the terminal device to send feedback information to the network device in the n +4 th slot, where the feedback information is information that instructs the terminal device whether to successfully receive data 1 transmitted in each symbol in the n +3 th slot. For another example, in the n +1 th slot, the network device sends scheduling information 2 to the terminal device through the PDCCH, where the scheduling information 2 is used to instruct the terminal device to transmit data 2 in the n +2 th slot and to transmit data 2 in the n +2 th slot, that is, each symbol attribute is an uplink symbol, a downlink symbol, or a flexible symbol in the n +2 th slot, and the scheduling information 2 is also used to instruct the terminal device to send feedback information to the network device in the n + 5th slot, where the feedback information is information that instructs the terminal device whether to successfully receive data 2 transmitted in each symbol in the n +2 th slot. In fig. 5(a), scheduling information 1 is transmitted earlier than scheduling information 2, transmission data 1 indicated by scheduling information 1 is transmitted later than transmission data 2 indicated by scheduling information 2, and feedback information 1 indicated by scheduling information 1 is transmitted earlier than feedback information 2 indicated by scheduling information 2; i.e. non-sequential transmission. For another example, in fig. 5(b), in the nth slot, the network device sends scheduling information 1 to the terminal device through the PDCCH, where the scheduling information 1 is used to instruct the terminal device to transmit data 1 in the n +2 th slot and to transmit data 1 in the n +2 th slot, that is, each symbol attribute is an uplink symbol, a downlink symbol, or a flexible symbol in the n +2 th slot, and the scheduling information 1 is also used to instruct the terminal device to send feedback information to the network device in the n + 5th slot, where the feedback information is information that instructs the terminal device whether to successfully receive data 1 transmitted by each symbol in the n +2 th slot. For another example, in the n +1 th slot, the network device sends scheduling information 2 to the terminal device through the PDCCH, where the scheduling information 2 is used to instruct the terminal device to transmit data 2 in the n +3 th slot and to transmit each symbol attribute when transmitting data 2 in the n +3 th slot, that is, each symbol attribute is an uplink symbol, a downlink symbol, or a flexible symbol in the n +3 th slot, and the scheduling information 2 is also used to instruct the terminal device to send feedback information to the network device in the n +4 th slot, where the feedback information is information that instructs the terminal device whether to successfully receive data 2 transmitted in each symbol in the n +3 th slot. In fig. 5(b), scheduling information 1 is transmitted earlier than scheduling information 2, and transmission data 1 indicated by scheduling information 1 is also transmitted earlier than transmission data 2 indicated by scheduling information 2, but feedback information 1 indicated by scheduling information 1 is transmitted later than feedback information 2 indicated by scheduling information 2; i.e. non-sequential transmission.

Therefore, in the case of transmitting data, the information scheduled first schedules the corresponding time-frequency resource first, and the information scheduled later can only schedule the time-frequency resource which is not scheduled by the information scheduled first, so that the data with high requirement on low delay cannot be transmitted in time, and the scheduling information with high requirement on low delay cannot meet the requirement on low delay.

Therefore, it is desirable to provide a method for reasonably determining the symbol attribute in the time unit corresponding to the time-frequency resource when data transmission collision occurs in the time unit corresponding to the time-frequency resource scheduled by the scheduling information.

To facilitate understanding of the embodiments of the present application, the following description is made before describing the embodiments of the present application.

First, in the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. If the information indicated by a certain piece of information (e.g., the first indication information described below) is referred to as information to be indicated, in a specific implementation process, there are many ways to indicate the information to be indicated, for example, but not limited to, the information to be indicated may be directly indicated, such as the information to be indicated itself or an index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein an association relationship exists between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other part of the information to be indicated is known or predetermined. For example, the indication of the specific information may be implemented by means of a predetermined arrangement order of the respective information (e.g., protocol specification), thereby reducing the indication overhead to some extent.

Second, the first, second and various numerical numbers in the embodiments shown below are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application. For example, different indication information is distinguished.

Third, in the embodiments illustrated below, "pre-acquisition" may include signaling by the network device or pre-defined, e.g., protocol definition. The "predefined" may be implemented by saving a corresponding code, table, or other means that can be used to indicate the relevant information in advance in the device (for example, including the terminal device and the network device), and the present application is not limited to a specific implementation manner thereof.

Fourth, the "protocol" referred to in the embodiments of the present application may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in the present application.

Fifth, the "plurality" referred to in the embodiments of the present application means two or more. "one or more of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (or more) of a, b, and c may represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, wherein a, b and c can be single or multiple.

Sixth, the predefinition referred to in the embodiments of the present application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.

Seventh, the "one slot" referred to in the embodiments of the present application is described by taking 14 symbols as an example, and the present application does not limit the number of symbols in one slot.

The method provided by the embodiment of the application will be described in detail below with reference to the accompanying drawings.

In the embodiments shown below, optionally, the first device is a terminal device, or a chip configured in the terminal device; the second device is a network device or a chip configured in the network device. The embodiments shown below do not limit the applicable scenarios of the methods provided in the present application.

Hereinafter, the embodiments of the present application will be described in detail by taking an interaction between a first device and a second device as an example. Fig. 6 is a schematic flow chart diagram of a communication method 600 provided by an embodiment of the present application, shown from the perspective of device interaction. As shown in fig. 6, the method 600 may include steps 610 and 640. The various steps in method 600 are described in detail below.

At step 610, the first device receives first configuration information. The first configuration information is used to indicate a first attribute of each time unit in a first time unit set corresponding to a first time-frequency resource, where the first attribute includes a flexible symbol attribute.

Optionally, the first configuration information may be sent by the second device when the first device receives the second configuration information. The first configuration information may also be sent by the first device to the other device.

The first time-frequency resource may include a resource in a time domain and a resource in a frequency domain. In the time domain, the time-frequency resource may include one or more time units. One time unit may be one symbol, or one Mini-slot (Mini-slot), or one slot (slot), or one subframe (subframe), where the duration of one subframe in the time domain may be 1 millisecond (ms), one slot may be composed of 7 or 14 symbols, and one Mini-slot may include at least one symbol (e.g., 2 symbols or 7 symbols or 14 symbols, or any number of symbols less than or equal to 14 symbols).

Optionally, the first attribute may include, in addition to the flexible symbol attribute, an uplink symbol attribute and/or a downlink symbol attribute, and the application does not limit whether the first attribute includes the uplink symbol attribute and/or the downlink symbol attribute.

Optionally, the first configuration information may further indicate an attribute of each time in the other unit set corresponding to the first time-frequency resource.

Wherein, the first configuration information may be configured by, but not limited to, the following ways:

mode 1: the first configuration information is configured through higher layer common signaling.

Mode 2: the first configuration information is configured through higher layer specific signaling.

Mode 3: the first configuration information may be configured through physical layer common signaling.

Mode 4: the first configuration information may also be configured through physical layer scheduling signaling.

For example, as shown in fig. 7, the first configuration information indicates a first property of each symbol in the 28-symbol (i.e., 2 slots) time-frequency resource, i.e., all symbols of the n +2 th slot and the n +3 th slot are the first time unit. And the first attributes are respectively: the 0 th symbol to the 5th symbol on the n +2 th time slot are downlink symbol attributes, the 6 th symbol to the 13 th symbol on the n +2 th time slot are flexible symbol attributes, and all symbols on the n +3 th time slot are downlink symbol attributes. The flexible symbol may be a downlink symbol or an uplink symbol. The downlink symbol is that the network device sends a signal to the terminal device on the symbol, and the downlink symbol is that the terminal device sends a signal to the network device on the symbol. For another example, as shown in fig. 8, the first configuration information indicates a first property of each symbol in the 14-symbol time-frequency resource, that is, all symbols of the n +2 th slot in the first time unit. And the first attributes are respectively: the 0 th symbol to the 13 th symbol on the n +2 th slot are flexible symbol attributes.

In step 620, the first device receives the first control information. The first control information is used to schedule the first device to receive the first data on the time-frequency resources corresponding to a second time unit set, where the second time unit set is a subset of the first time unit set.

The second time unit set is a subset of the first time unit set, and may be divided into two cases, that is, the second time unit set may be the same set as the first time set, or the second time unit set may also be a proper subset of the first time unit set. For example, as shown in fig. 7, the first control information is used to schedule each symbol in the time-frequency resource corresponding to the (n + 2) th time slot of the first device to receive the first data, that is, a symbol attribute of each symbol in the time-frequency resource corresponding to the (n + 2) th time slot is a downlink symbol attribute. For another example, as shown in fig. 8, the first control information is used to schedule the first device to receive the first data at the 2 nd symbol to the 13 th symbol in the time-frequency resource corresponding to the n +2 th slot, that is, the symbol attributes of the 2 nd symbol to the 13 th symbol in the time-frequency resource corresponding to the n +2 th slot are downlink symbol attributes.

For example, as shown in fig. 7, the first time unit is all symbols of the (n + 2) th slot and all symbols of the (n + 3) th slot, and the second time unit is all symbols of the (n + 2) th slot, i.e. the second time unit set is a proper subset of the first time unit set. For another example, as shown in fig. 9, the first time unit is all symbols of the (n + 2) th slot, and the second time unit set is all symbols of the (n + 2) th slot, that is, the second time unit set and the first time unit set are the same set.

Optionally, the first data may be data carried by a downlink channel, and the downlink channel may be a Physical Downlink Shared Channel (PDSCH) or a Physical Downlink Control Channel (PDCCH). The first data may also be a downlink reference signal, which may be a downlink demodulation reference signal (DMRS) or a downlink channel state information reference signal (CS-RS). This is not a limitation of the present application.

Optionally, the first control information may also schedule the first device to receive the first data on time-frequency resources corresponding to other time unit sets, where the other time unit sets are also subsets of the first time unit set.

Alternatively, the first control information may be configured through higher layer signaling.

In step 630, the first device receives second control information. The second control information is used for scheduling the first device to send second data on a time-frequency resource corresponding to a third time unit set, and the third time unit set and the second time unit set have intersection.

The third time unit set and the second time unit set have an intersection, which can be divided into two cases, that is, the third time unit set and the second time set can have an intersection; or the second set of time units is the same set as the third set of time units.

For example, as shown in fig. 7, the second control information is used to schedule the first device to transmit the second data in the 8 th to 13 th symbols in the time-frequency resource corresponding to the n +2 th time slot, that is, the symbol attributes of the 8 th to 13 th symbols in the time-frequency resource corresponding to the n +2 th time slot are uplink symbol attributes. For example, as shown in fig. 11, the second control information is used to schedule the first device to transmit the second data in the 2 nd to 7 th symbols in the time-frequency resource corresponding to the n +2 th time slot, that is, the symbol attributes of the 2 nd to 7 th symbols in the time-frequency resource corresponding to the n +2 th time slot are uplink symbol attributes.

For example, as shown in fig. 7, the second time unit set is a set composed of all symbols of the n +2 th slot, and the third time unit set is a set composed of the 8 th symbol to the 13 th symbol of the n +2 th slot, that is, the third time unit set is a part of the second time unit set. For another example, as shown in fig. 9, the second time unit set is a set consisting of the 2 nd symbol to the 5th symbol of the n +2 th slot, and the third time unit set is a set consisting of the 2 nd symbol to the 5th symbol of the n +2 th slot, that is, the third time unit set and the second time unit set are the same set. For another example, as shown in fig. 11, the second time unit set is also a set composed of the 5th symbol to the 10 th symbol of the n +2 th time slot, and the third time unit set is a set composed of the 2 nd symbol to the 7 th symbol of the n +2 th time slot, that is, the third time unit set and the second time unit set have an intersection, that is, the intersection is the 5th symbol to the 7 th symbol of the n +2 th time slot.

The second data may be data carried by an uplink channel, where the uplink channel may be a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH); the data carried by the uplink control channel may be uplink control information, and the uplink control information may include feedback information of a hybrid automatic repeat request HARQ. The second data may also be an uplink reference signal, which may be an uplink demodulation reference signal (DMRS) or an uplink channel Sounding Reference Signal (SRS). This is not a limitation of the present application.

Alternatively, the second control information may be configured through higher layer signaling.

At step 640, the first device determines a second attribute for each time unit in the fourth set of time units. The second attribute includes an uplink or a downlink, and the fourth time cell set is an intersection of the second time cell set and the third time cell set.

When the second attribute is uplink, that is, the first device transmits the second data on the fourth time unit, it can be understood that the first device transmits the second data to the second device on the fourth time unit through the PUSCH; or the first device transmits the second data to the second device through the PUCCH in the fourth time unit. It can be appreciated that the first device may transmit uplink DMRS, uplink SRS, or HARQ feedback information to the second device on the fourth time element. In case the second attribute is downstream, i.e. the first device receives the first data on the fourth time unit. It can be understood that the first device receives the first data transmitted by the second device through the PDSCH on the fourth time unit; or the first device receives the first data sent by the second device through the PDCCH in the fourth time unit. It can be understood that, in the fourth time unit, the first device may transmit the downlink DMRS and the downlink SRS to the second device.

The fourth time unit set is an intersection of the second time unit set and the third time unit set, and may be divided into two cases. In one case, when the second time unit set and the third time unit set are the same set, the fourth time unit set is the second time unit set or the third time unit set. In another case, when the second time cell set and the third time cell set are not the same set, the fourth time cell set is a portion where the second time cell combination and the third time cell set intersect.

For example, as shown in fig. 7, the second time unit set is a set of time units between the 0 th symbol and the 13 th symbol of the n +2 th slot, the third time unit set is a set of time units between the 8 th symbol and the 13 th symbol of the n +2 th slot, and the fourth time unit set is a set of time units between the 8 th symbol and the 13 th symbol of the n +2 th slot, that is, the first device determines the symbol attributes of the 8 th symbol and the 13 th symbol of the n +2 th slot.

For example, as shown in fig. 8, the second time unit set is a set of time units between the 2 nd symbol and the 13 th symbol of the n +2 th slot, the third time unit set is a set of time units between the 0 th symbol and the 5th symbol of the n +2 th slot, and the fourth time unit set is a set of time units between the 2 nd symbol and the 5th symbol of the n +2 th slot, that is, the first device determines the symbol attributes of the 2 nd symbol and the 5th symbol of the n +2 th slot.

For example, as shown in fig. 9, the second time unit set is a set of time units between the 2 nd symbol and the 5th symbol of the n +2 th slot, the third time unit set is a set of time units between the 2 nd symbol and the 5th symbol of the n +2 th slot, and the fourth time unit set is a set of time units between the 2 nd symbol and the 5th symbol of the n +2 th slot, that is, the first device determines the symbol attributes of the 2 nd symbol to the 5th symbol of the n +2 th slot.

Alternatively, the first device may determine the second attribute of each time unit in the fourth set of time units in, but not limited to, the following two ways.

Mode 1: and the first equipment determines the second attribute of each time unit in the fourth time unit set according to the service priority of the first data and the service priority of the second data.

For example, the traffic of the first data may be an eMBB traffic, and the traffic of the second data may be a URLLC traffic. For another example, the first data service may be a URLLC service, and the second data service may be an eMBB service. This is not a limitation of the present application.

Alternatively, the first device may acquire the priority of the first data service and the priority of the second data service in the following three ways, but is not limited to the following three ways.

Mode A: the first device may determine the service priority of the first data and the service priority of the second data according to the indication information.

Optionally, the first device acquires the indication information. The indication information is used for indicating the service priority of the first data and/or the service priority of the second data. That is, the first device can know the service priority of the first data and the service priority of the second data according to the indication information.

Optionally, the priority of the first data service and the priority of the second data service indicated in the indication information may be acquired by the first device at the same time. For example, the indication information may indicate that the service priority of the first data is 1, the service priority of the second data is 2, and the indication information further indicates that 1 is higher than 2, and the first device may know that the service priority of the first data is higher than the service priority of the second data after receiving the indication information.

Optionally, the priority of the first data service and the priority of the second data service indicated in the indication information may also be obtained by the first device at different times. For example, at a first time, the service priority of the first device for acquiring the first data is 1; at the second time, the service priority of the second data obtained by the first device is 2, and the first device can know that the service priority of the first data is higher than that of the second data according to the indication information received by the first device at the first time and the indication information received by the first device at the second time.

Optionally, the indication information may also be obtained by the first device from the first control information and/or the second control information, that is, the control information may not only indicate the attribute of the scheduled time unit, but also indicate the priority of the control information for scheduling data transmission on the time unit.

Optionally, the indication information not only indicates the service priority of the first data and/or the service priority of the second data, but also indicates the service priority of other data, which is not limited in this application.

Mode B: the first device may determine the service priority of the first data and the service priority of the second data according to a Radio Network Temporary Identity (RNTI).

Optionally, the RNTI comprises at least one of: a cell radio network temporary identifier (C-RNTI), a random access radio network temporary identifier (RA-RNTI), a paging radio network temporary identifier (P-RNTI), a system information radio network temporary identifier (SI-RNTI), a temporary (temporary) RNTI, a modulation and coding scheme (MCS-C-RNTI).

Optionally, the indication information may include an RNTI, and the indication information may further include a priority order of the RNTI.

Alternatively, the RNTI may be carried by the control information, and the priority order of the RNTI may be specified by the communication system or the communication protocol.

The first device may know the service priority of the first data and the service priority of the second data through the indication information or the control information. For example, the traffic of the first data may be an eMBB traffic, and the traffic of the second data may be a URLLC traffic. The priority of URLLC traffic is higher than that of eMBB traffic. For example, the MCS-C-RNTI may be for URLLC traffic and the C-RNTI may be for eMBB traffic. For example, the first control information carries a C-RNTI, the second control information carries an MCS-C-RNTI, and according to the priority order of the RNTIs, the first device can know that the service priority of the second control information for scheduling the first device to transmit the second data on the time-frequency resource corresponding to the third time unit set is higher than the service priority of the first control information for scheduling the first device to receive the first data on the time-frequency resource corresponding to the second time unit set. For example, C-RNTI has the highest priority, and MCS-C-RNTI is the second. For example, the first control information carries a C-RNTI, the second control information carries an MCS-C-RNTI, and according to the priority order of the RNTIs, the first device can know that the service priority of the first control information for scheduling the first device to receive the first data on the time-frequency resource corresponding to the second time unit set is higher than the service priority of the second control information for scheduling the first device to transmit the second data on the time-frequency resource corresponding to the third time unit set.

Optionally, the first device may parse the first control information and the second control information by using the RNTI as a scrambling code.

Mode C: and the first equipment acquires the service priority of the first data and the service priority of the second data according to the control search space.

Optionally, the communication protocol or the communication system may configure a blind search space (searchspace) of the first control information and a blind search space of the second control information, and may also configure a priority of the blind search spaces, and the first device may know, through the corresponding search spaces, which control information schedules a higher priority of a service of data transmitted by the first device in the corresponding time unit.

For example, the communication protocol or the communication system configures 2 search spaces, for example, search space 1 and search space 2, and at the same time, the communication protocol or the communication system also configures the priority of the search spaces, for example, the priority of search space 1 is higher than the priority of search space 2, and then the control information that is blindly detected by the first device from search space 1 schedules the traffic of the data that is transmitted by the first device on the corresponding time unit with higher priority than the control information that is blindly detected by search space 2 schedules the traffic of the data that is transmitted by the first device on the corresponding time unit.

The first device can obtain the service priority of the first data and the service priority of the second data through the three modes, and judge the service priority of the first data and the service priority of the second data. The following two cases can be classified.

Case 1: and under the condition that the service priority of the first data is higher than that of the second data, the first equipment determines the second attribute of each time unit in the fourth time unit set as downlink.

For example, as shown in fig. 7, the first configuration information indicates that the 0 th symbol to the 5th symbol in the n +2 th slot are downlink symbol attributes, the 6 th symbol to the 13 th symbol in the n +2 th slot are flexible symbol attributes, and all symbols in the n +3 th slot are downlink symbol attributes, that is, all symbols in the n +2 th slot and the n +3 th slot are first time units. The first device receives first control information in the nth slot, and the first control information schedules the 0 th symbol to the 13 th symbol of the (n + 2) th slot to receive first data, that is, the second time unit is all symbols of the (n + 2) th slot. The first device receives second control information in an n +1 th time slot, the second control information schedules 8 th to 13 th symbols of an n +2 th time slot to transmit second data, namely, 8 th to 13 th symbols of an n +2 th time slot in a third time unit, the 8 th to 13 th symbols of an n +2 th time slot in a fourth time unit can be obtained according to the second time unit and the third time, the first device needs to determine symbol attributes of the 8 th to 13 th symbols of the n +2 th time slot, namely, the first device needs to determine whether the 8 th to 13 th symbols of the n +2 th time slot are used for receiving first data or transmitting the second data, and the first device determines the 8 th to 13 th symbols of the n +2 th time slot are used for receiving the first data because the traffic priority of the first data is higher than the traffic priority of the second data, that is, the first device determines that the attribute of the 8 th symbol to the 13 th symbol of the (n + 2) th slot is downlink.

For example, as shown in fig. 8, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, i.e., the first time unit is all symbols of the n +2 th slot. The first device receives first control information in the nth slot, and the first control information schedules the 2 nd symbol to the 13 th symbol of the (n + 2) th slot to receive first data, that is, the second time unit is the 2 nd symbol to the 13 th symbol of the (n + 2) th slot. The first device receives second control information in an n +1 th time slot, the second control information schedules 0 th symbol to 5th symbol of an n +2 th time slot to transmit second data, that is, the third time unit is the 2 nd symbol to 5th symbol of the n +2 th time slot, the 2 nd symbol to 5th symbol of the n +2 th time slot can be obtained according to the second time unit and the third time, the symbol attributes of the 2 nd symbol to 5th symbol of the n +2 th time slot need to be determined, that is, the first device needs to determine whether the 2 nd symbol to 5th symbol of the n +2 th time slot are used for receiving first data or transmitting the second data, and the first device determines the 2 nd symbol to 5th symbol of the n +2 th time slot are used for receiving the first data because the traffic priority of the first data is higher than the traffic priority of the second data, that is, the first device determines that the attribute of the 2 nd symbol to the 5th symbol of the (n + 2) th slot is downlink.

For example, as shown in fig. 9, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, i.e., the first time unit is all symbols of the n +2 th slot. The first device receives first control information in the nth slot, and the first control information schedules the 2 nd symbol to the 5th symbol of the (n + 2) th slot to receive first data, that is, the second time unit is the 2 nd symbol to the 5th symbol of the (n + 2) th slot. The first device receives second control information in an n +1 th time slot, the second control information schedules 2 nd to 5th symbols of an n +2 th time slot to transmit second data, that is, the third time unit is the 2 nd to 5th symbols of the n +2 th time slot, the 2 nd to 5th symbols of the n +2 th time slot can be obtained according to the second time unit and the third time, the fourth time unit is the 2 nd to 5th symbols of the n +2 th time slot, the first device needs to determine symbol attributes of the 2 nd to 5th symbols of the n +2 th time slot, that is, the first device needs to determine whether the 2 nd to 5th symbols of the n +2 th time slot are used for receiving first data or transmitting the second data, and the first device determines the 2 nd to 5th symbols of the n +2 th time slot are used for receiving the first data because the traffic priority of the first data is higher than the traffic priority of the second data, that is, the first device determines that the attribute of the 2 nd symbol to the 5th symbol of the (n + 2) th slot is downlink.

For example, as shown in fig. 10, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, i.e., the first time unit is all symbols of the n +2 th slot. The first device receives second control information in the nth slot, and the second control information schedules the 0 th symbol and the 13 th symbol of the (n + 2) th slot to transmit second data, that is, the second time unit is all symbols of the (n + 2) th slot. The first device receives first control information in an n +1 th slot, the first control information schedules 3 rd symbol and 4 th symbol of an n +2 th slot to receive first data, namely 3 rd symbol to 4 th symbol of the n +2 th slot in a third time unit, the 2 nd symbol to 5th symbol of the n +2 th slot in a fourth time unit can be obtained according to the second time unit and the third time, the first device needs to determine symbol attributes of the 3 rd symbol and the 4 th symbol of the n +2 th slot, namely the first device needs to determine whether the 3 rd symbol and the 4 th symbol of the n +2 th slot are used for receiving first data or transmitting the second data, and the first device determines the 3 rd symbol and the 4 th symbol of the n +2 th slot are used for receiving the first data because the traffic priority of the first data is higher than the traffic priority of the second data, that is, the first device determines that the attributes of the 3 rd symbol and the 4 th symbol of the (n + 2) th slot are downlink.

For example, as shown in fig. 11, the first configuration information indicates that the 0 th symbol to the 13 th symbol on the n +2 th slot are flexible symbol attributes, that is, the first time unit is all symbols of the n +2 th slot. The first device receives second control information in the nth slot, and the second control information schedules the 2 nd symbol to the 7 th symbol of the (n + 2) th slot to receive the first data, that is, the second time unit is the 2 nd symbol to the 7 th symbol of the (n + 2) th slot. The first device receives first control information in an n +1 th slot, the first control information schedules 5th to 10 th symbols of an n +2 th slot to transmit second data, namely, the third time unit is the 5th to 10 th symbols of the n +2 th slot, the 5th to 7 th symbols of the n +2 th slot can be obtained according to the second time unit and the third time, the fourth time unit is the 5th to 7 th symbols of the n +2 th slot, the first device needs to determine symbol attributes of the 5th to 7 th symbols of the n +2 th slot, namely, the first device needs to determine whether the 5th to 7 th symbols of the n +2 th slot are used for receiving first data or transmitting the second data, and the first device determines the 5th to 7 th symbols of the n +2 th slot are used for receiving the first data because the traffic priority of the first data is higher than the traffic priority of the second data, that is, the first device determines that the attribute of the 5th symbol to the 7 th symbol of the (n + 2) th slot is downlink.

For example, as shown in fig. 12, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, that is, the first time unit is all symbols of the n +2 th slot. The first device receives second control information in the nth slot, and the second control information schedules 8 th to 11 th symbols of the (n + 2) th slot to transmit second data, that is, the second time unit is the 8 th to 11 th symbols of the (n + 2) th slot. The first device receives first control information in an n +1 th slot, the first control information schedules 8 th to 11 th symbols of an n +2 th slot to receive first data, namely 8 th to 11 th symbols of an n +2 th slot in a third time unit, the 8 th to 11 th symbols of an n +2 th slot in a fourth time unit can be obtained according to the second time unit and the third time, the first device needs to determine symbol attributes of the 8 th to 11 th symbols of the n +2 th slot, namely the first device needs to determine whether the 8 th to 11 th symbols of the n +2 th slot are used for receiving first data or sending the second data, and the first device determines the 8 th to 11 th symbols of the n +2 th slot to be used for receiving the first data because the traffic priority of the first data is higher than the traffic priority of the second data, that is, the first device determines that the attribute of the 8 th symbol to the 11 th symbol of the (n + 2) th slot is downlink.

Case 2: and under the condition that the service priority of the first data is not higher than the service priority of the second data, the first device determines that the second attribute of each time unit in the fourth time unit set is uplink.

For example, as shown in fig. 7, the first configuration information indicates that the 0 th symbol to the 5th symbol in the n +2 th slot are downlink symbol attributes, the 6 th symbol to the 13 th symbol in the n +2 th slot are flexible symbol attributes, and all symbols in the n +3 th slot are downlink symbol attributes, that is, all symbols in the n +2 th slot and the n +3 th slot are first time units. The first device receives first control information in the nth slot, and the first control information schedules the 0 th symbol to the 13 th symbol of the (n + 2) th slot to receive first data, that is, the second time unit is all symbols of the (n + 2) th slot. The first device receives second control information at an n +1 th time slot, the second control information schedules 8 th to 13 th symbols of an n +2 th time slot to transmit second data, namely, 8 th to 13 th symbols of an n +2 th time slot in a third time unit, the 8 th to 13 th symbols of an n +2 th time slot in a fourth time unit can be obtained according to the second time unit and the third time, the first device needs to determine symbol attributes of the 8 th to 13 th symbols of the n +2 th time slot, namely, the first device needs to determine whether the 8 th to 13 th symbols of the n +2 th time slot are used for receiving first data or transmitting the second data, and the first device determines that the 8 th to 13 th symbols of the n +2 th time slot are used for transmitting the second data because the traffic priority of the first data is not higher than the traffic priority of the second data, that is, the first device determines that the attribute of the 8 th symbol to the 13 th symbol of the (n + 2) th slot is uplink.

For example, as shown in fig. 8, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, i.e., the first time unit is all symbols of the n +2 th slot. The first device receives first control information in the nth slot, and the first control information schedules the 2 nd symbol to the 13 th symbol of the (n + 2) th slot to receive first data, that is, the second time unit is the 2 nd symbol to the 13 th symbol of the (n + 2) th slot. The first device receives second control information at an n +1 th time slot, the second control information schedules 0 th symbol to 5th symbol of an n +2 th time slot to transmit second data, namely, the third time unit is the 2 nd symbol to 5th symbol of the n +2 th time slot, the 2 nd symbol to 5th symbol of the n +2 th time slot can be obtained according to the second time unit and the third time, the symbol attributes of the 2 nd symbol to 5th symbol of the n +2 th time slot are determined, namely, the first device needs to determine whether the 2 nd symbol to 5th symbol of the n +2 th time slot are used for receiving the first data or transmitting the second data, and the first device determines the 2 nd symbol to 5th symbol of the n +2 th time slot to be used for transmitting the second data because the traffic priority of the first data is not higher than the traffic priority of the second data, that is, the first device determines that the attribute of the 2 nd symbol to the 5th symbol of the (n + 2) th slot is uplink.

For example, as shown in fig. 9, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, i.e., the first time unit is all symbols of the n +2 th slot. The first device receives first control information in the nth slot, and the first control information schedules the 2 nd symbol to the 5th symbol of the (n + 2) th slot to receive first data, that is, the second time unit is the 2 nd symbol to the 5th symbol of the (n + 2) th slot. The first device receives second control information at an n +1 th time slot, the second control information schedules 2 nd to 5th symbols of the n +2 th time slot to transmit second data, namely, 2 nd to 5th symbols of the n +2 th time slot in a third time unit, the 2 nd to 5th symbols of the n +2 th time slot in a fourth time unit can be obtained according to the second time unit and the third time, the first device needs to determine symbol attributes of the 2 nd to 5th symbols of the n +2 th time slot, namely, the first device needs to determine whether the 2 nd to 5th symbols of the n +2 th time slot are used for receiving first data or transmitting the second data, and the first device determines that the 2 nd to 5th symbols of the n +2 th time slot are used for transmitting the second data because the traffic priority of the first data is not higher than the traffic priority of the second data, that is, the first device determines that the attribute of the 2 nd symbol to the 5th symbol of the (n + 2) th slot is uplink.

For example, as shown in fig. 10, the first configuration information indicates that the 0 th symbol to the 13 th symbol on the n +2 th slot are all symbols of the flexible symbol attribute, i.e., the first time unit is the n +2 th slot. The first device receives second control information in the nth slot, and the second control information schedules the 0 th symbol and the 13 th symbol of the (n + 2) th slot to transmit second data, that is, the second time unit is all symbols of the (n + 2) th slot. The first device receives first control information in an n +1 th slot, the first control information schedules 3 rd symbol and 4 th symbol of an n +2 th slot to receive first data, namely 3 rd symbol to 4 th symbol of the n +2 th slot in a third time unit, the 2 nd symbol to 5th symbol of the n +2 th slot in a fourth time unit can be obtained according to the second time unit and the third time, the first device needs to determine symbol attributes of the 3 rd symbol and the 4 th symbol of the n +2 th slot, namely the first device needs to determine whether the 3 rd symbol and the 4 th symbol of the n +2 th slot are used for receiving first data or transmitting the second data, and the first device determines the 3 rd symbol and the 4 th symbol of the n +2 th slot are used for transmitting the second data because the traffic priority of the first data is not higher than the traffic priority of the second data, that is, the first device determines that the attributes of the 3 rd symbol and the 4 th symbol of the (n + 2) th slot are uplink.

For example, as shown in fig. 11, the first configuration information indicates that the 0 th symbol to the 13 th symbol on the n +2 th slot are flexible symbol attributes, that is, the first time unit is all symbols of the n +2 th slot. The first device receives second control information in the nth slot, and the second control information schedules the 2 nd symbol to the 7 th symbol of the (n + 2) th slot to receive the first data, that is, the second time unit is the 2 nd symbol to the 7 th symbol of the (n + 2) th slot. The first device receives first control information at an n +1 th time slot, the first control information schedules 5th to 10 th symbols of an n +2 th time slot to transmit second data, namely, 5th to 10 th symbols of an n +2 th time slot in a third time unit, and the 5th to 7 th symbols of an n +2 th time slot in a fourth time unit can be obtained according to the second time unit and the third time, the first device needs to determine symbol attributes of the 5th to 7 th symbols of the n +2 th time slot, namely, the first device needs to determine whether the 5th to 7 th symbols of the n +2 th time slot are used for receiving first data or transmitting the second data, and the first device determines that the 5th to 7 th symbols of the n +2 th time slot are used for transmitting the second data because the traffic priority of the first data is not higher than the traffic priority of the second data, that is, the first device determines that the attribute of the 5th symbol to the 7 th symbol of the (n + 2) th slot is uplink.

For example, as shown in fig. 12, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, that is, the first time unit is all symbols of the n +2 th slot. The first device receives second control information in the nth slot, and the second control information schedules 8 th to 11 th symbols of the (n + 2) th slot to transmit second data, that is, the second time unit is the 8 th to 11 th symbols of the (n + 2) th slot. The first device receives first control information at an n +1 th time slot, the first control information schedules 8 th to 11 th symbols of an n +2 th time slot to receive first data, namely 8 th to 11 th symbols of an n +2 th time slot as a third time unit, the 8 th to 11 th symbols of an n +2 th time slot as a fourth time unit can be obtained according to the second time unit and the third time, the first device needs to determine symbol attributes of the 8 th to 11 th symbols of the n +2 th time slot, namely the first device needs to determine whether the 8 th to 11 th symbols of the n +2 th time slot are used for receiving first data or sending the second data, and the first device determines that the 8 th to 11 th symbols of the n +2 th time slot are used for sending the second data because the traffic priority of the first data is not higher than the traffic priority of the second data, that is, the first device determines that the attribute of the 8 th symbol to the 11 th symbol of the (n + 2) th slot is uplink.

Mode 2: the first device determines a second attribute of each time unit in the fourth set of time units according to the time order of the received first control information and the received second control information.

Optionally, the starting time of the first device receiving the first control information may be based on the time of the first device receiving the first control information; the start time of the first device receiving the second control information may be based on the time the first device receives the second control information. Or, the starting time of the first device receiving the first control information may be based on the time of the second device sending the first control information, that is, the starting time of the first device receiving the first control information may be the time of the first device receiving the first control information minus the transmission time of the second device transmitting the first control information to the first device; the starting time of the first device receiving the second control information may be based on the time of the second device sending the second control information, that is, the starting time of the first device receiving the second control information may be the time of the first device receiving the second control information minus the transmission time of the second device transmitting the second control information to the first device. This is not a limitation of the present application.

Case 1': in a case where a time of receiving the first control information is earlier than a time of receiving the second control information, the first device determines the second attribute of each time unit in the fourth set of time units to be an uplink.

For example, as shown in fig. 7, the first configuration information indicates that the 0 th symbol to the 5th symbol in the n +2 th slot are downlink symbol attributes, the 6 th symbol to the 13 th symbol in the n +2 th slot are flexible symbol attributes, and all symbols in the n +3 th slot are downlink symbol attributes, that is, all symbols in the n +2 th slot and the n +3 th slot are first time units. The first device receives first control information in the nth slot, and the first control information schedules the 0 th symbol to the 13 th symbol of the (n + 2) th slot to receive first data, that is, the second time unit is all symbols of the (n + 2) th slot. The first device receives second control information in an n +1 th slot, the second control information schedules 8 th to 13 th symbols of an n +2 th slot to transmit second data, that is, the third time unit is the 8 th to 13 th symbols of the n +2 th slot, and the 8 th to 13 th symbols of the n +2 th slot can be obtained according to the second time unit and the third time, the symbol attributes of the 8 th to 13 th symbols of the n +2 th slot need to be determined, that is, the first device needs to determine whether the 8 th to 13 th symbols of the n +2 th slot are used for receiving first data or transmitting the second data, because the first device receives the first control information in the n th slot, the first device receives the second control information in the n +1 th slot, and the time for the first device to receive the first control information is earlier than the time for the first device to receive the second control information, the first device determines that the 8 th symbol to the 13 th symbol of the n +2 th slot are used for sending the second data, i.e. the first device determines that the attributes of the 8 th symbol to the 13 th symbol of the n +2 th slot are uplink.

For example, as shown in fig. 8, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, i.e., the first time unit is all symbols of the n +2 th slot. The first device receives first control information in the nth slot, and the first control information schedules the 2 nd symbol to the 13 th symbol of the (n + 2) th slot to receive first data, that is, the second time unit is the 2 nd symbol to the 13 th symbol of the (n + 2) th slot. The first device receives second control information in an n +1 th slot, the second control information schedules 0 th symbol to 5th symbol of an n +2 th slot to transmit second data, that is, the third time unit is the 2 nd symbol to 5th symbol of the n +2 th slot, and the symbol attributes of the 2 nd symbol to 5th symbol of the n +2 th slot in the fourth time unit can be obtained according to the second time unit and the third time, that is, the first device needs to determine whether the 2 nd symbol to 5th symbol of the n +2 th slot are used for receiving first data or transmitting the second data, because the first device receives the first control information in the n th slot, the first device receives the second control information in the n +1 th slot, and the time for the first device to receive the first control information is earlier than the time for the first device to receive the second control information, the first device determines that the 2 nd symbol to the 5th symbol of the n +2 th slot are used for sending the second data, i.e. the first device determines that the attributes of the 2 nd symbol to the 5th symbol of the n +2 th slot are uplink.

For example, as shown in fig. 9, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, i.e., the first time unit is all symbols of the n +2 th slot. The first device receives first control information in the nth slot, and the first control information schedules the 2 nd symbol to the 5th symbol of the (n + 2) th slot to receive first data, that is, the second time unit is the 2 nd symbol to the 5th symbol of the (n + 2) th slot. The first device receives second control information in an n +1 th time slot, the second control information schedules 2 nd to 5th symbols of the n +2 th time slot to transmit second data, that is, the third time unit is the 2 nd to 5th symbols of the n +2 th time slot, and the symbol attributes of the 2 nd to 5th symbols of the n +2 th time slot, that is, the 2 nd to 5th symbols of the n +2 th time slot, which are fourth time units, can be obtained according to the second time unit and the third time, the first device needs to determine whether the 2 nd to 5th symbols of the n +2 th time slot are used for receiving first data or transmitting the second data, because the first device receives the first control information in the n th time slot, the first device receives the second control information in the n +1 th time slot, and the first device receives the first control information earlier than the first device receives the second control information, the first device determines that the 2 nd symbol to the 5th symbol of the n +2 th slot are used for sending the second data, i.e. the first device determines that the attributes of the 2 nd symbol to the 5th symbol of the n +2 th slot are uplink.

Case 2': in a case where the time of receiving the first control information is not earlier than the time of receiving the second control information, the first device determines the second attribute of each time unit in the fourth set of time units as a downlink.

For example, as shown in fig. 10, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, i.e., the first time unit is all symbols of the n +2 th slot. The first device receives second control information in the nth slot, and the second control information schedules the 0 th symbol and the 13 th symbol of the (n + 2) th slot to transmit second data, that is, the second time unit is all symbols of the (n + 2) th slot. The first device receives first control information in an n +1 th slot, the first control information schedules a 3 rd symbol and a 4 th symbol of an n +2 th slot to receive first data, that is, a 3 rd symbol to a 4 th symbol of the n +2 th slot in a third time unit, and a 2 nd symbol to a 5th symbol of an n +2 th slot in a fourth time unit can be obtained according to the second time unit and the third time, the first device needs to determine symbol attributes of the 3 rd symbol and the 4 th symbol of the n +2 th slot, that is, the first device needs to determine whether the 3 rd symbol and the 4 th symbol of the n +2 th slot are used for receiving first data or sending the second data, and since the first device receives the second control information in the n th slot, the n +1 th slot of the first device receives the first control information, that is, the time when the first device receives the first control information is not earlier than the time when the first device receives the second control information, the first device determines that the 3 rd symbol and the 4 th symbol of the n +2 th slot are for receiving the first data, i.e., the first device determines that the 3 rd symbol and the 4 th symbol of the n +2 th slot have downlink attribute.

For example, as shown in fig. 11, the first configuration information indicates that the 0 th symbol to the 13 th symbol on the n +2 th slot are flexible symbol attributes, that is, the first time unit is all symbols of the n +2 th slot. The first device receives second control information in the nth slot, and the second control information schedules the 2 nd symbol to the 7 th symbol of the (n + 2) th slot to receive the first data, that is, the second time unit is the 2 nd symbol to the 7 th symbol of the (n + 2) th slot. The first device receives first control information in an n +1 th slot, the first control information schedules 5th symbol to 10 th symbol of an n +2 th slot to transmit second data, that is, the third time unit is the 5th symbol to 10 th symbol of the n +2 th slot, and the 5th symbol to 7 th symbol of the n +2 th slot can be obtained according to the second time unit and the third time, the first device needs to determine the symbol attributes of the 5th symbol to 7 th symbol of the n +2 th slot, that is, the first device needs to determine whether the 5th symbol to 7 th symbol of the n +2 th slot are used for receiving first data or transmitting the second data, because the first device receives the second control information in the n th slot, the n +1 th slot of the first device receives the first control information, that is, the time for the first device to receive the first control information is not earlier than the time for the first device to receive the second control information, the first device determines that the 5th symbol to the 7 th symbol of the n +2 th slot are used for receiving the first data, i.e., the first device determines that the attributes of the 5th symbol to the 7 th symbol of the n +2 th slot are downlink.

For example, as shown in fig. 12, the first configuration information indicates that the 0 th to 13 th symbols on the n +2 th slot are flexible symbol attributes, that is, the first time unit is all symbols of the n +2 th slot. The first device receives second control information in the nth slot, and the second control information schedules 8 th to 11 th symbols of the (n + 2) th slot to transmit second data, that is, the second time unit is the 8 th to 11 th symbols of the (n + 2) th slot. The first device receives first control information in an n +1 th slot, the first control information schedules 8 th to 11 th symbols of an n +2 th slot to receive first data, namely 8 th to 11 th symbols of an n +2 th slot in a third time unit, and the symbol attributes of the 8 th to 11 th symbols of the n +2 th slot in a fourth time unit can be obtained according to the second time unit and the third time unit, namely the first device needs to determine whether the 8 th to 11 th symbols of the n +2 th slot are used for receiving first data or sending the second data, because the first device receives the second control information in the n th slot, the first device receives the first control information in the n +1 th slot, namely the time for the first device to receive the first control information is not earlier than the time for the first device to receive the second control information, the first device determines that the 8 th symbol to the 11 th symbol of the n +2 th slot are used for receiving the first data, i.e., the first device determines that the 8 th symbol to the 11 th symbol of the n +2 th slot have downlink attribute.

Optionally, after the first device determines the second attribute of each time unit in the fourth time unit set, there is a symbol attribute inconsistency between the first symbol in the fourth unit and symbols adjacent to other units, or a symbol attribute inconsistency between the last symbol and symbols adjacent to other units, and the first device needs to consider a time for performing a transceiving switch (switching from a receiving end to a transmitting end or switching from the transmitting end to the receiving end), or the first device needs to consider a time before transmitting or receiving, and therefore, the first device needs to determine a time for reserving symbols and the number of reserved symbols, where the reserved symbols occupy flexible symbols of the time unit corresponding to the first time-frequency resource indicated by the first configuration information.

Alternatively, the number of reserved symbols may be determined by, but is not limited to, the following two ways, which will be described in detail below.

Mode D: the first device obtains second configuration information, where the second configuration information is used to indicate the number of reserved symbols.

Alternatively, the second configuration information may be obtained by the first device from control information of a higher priority, or obtained by the first device from higher layer signaling.

For example, the first configuration information may indicate that the number of reserved symbols is 1, or the first configuration information may also indicate that the number of reserved symbols is 2, which is not limited in this application.

Mode E: the first device determines the number of reserved symbols (a) itself. The number of reserved symbols (a) may be determined by the following formula:

wherein, X is the switching time of the uplink symbol and the downlink symbol, Y is the time advance, and Z is the time occupied by the flexible symbol.

Wherein [ ] means rounding up. For example, [4.1] ═ 4.

For example, X may be 15 microseconds, Y may be 10 microseconds, and Z may be 76 microseconds, the number of reserved symbols is

The first device may set a reservation time between the first symbol in the fourth cell and the symbols adjacent to the other cells, or may set a reservation time between the last symbol in the fourth cell and the symbols adjacent to the other cells. For example, as shown in fig. 13, in the case that the traffic priority of the second data is higher than that of the first data, the first device determines the 8 th symbol to the 13 th symbol of the n +2 th slot as transmitting the second data, and the 6 th symbol and the 7 th symbol of the n +2 th slot may be used for receiving the first data, but since the transmission directions of the first data and the second data are opposite, the first device needs to determine the 6 th symbol or the 6 th symbol and the 7 th symbol of the n +2 th slot as reserved symbols. For example, as shown in fig. 14, in a case where the first device receives the second control information earlier than the first control information, the first device determines the 3 rd symbol and the 4 th symbol of the n +2 th slot as receiving the first data, and the 0 th symbol to the 2 nd symbol, and the 5th symbol to the 13 th symbol of the n +2 th slot may be used to transmit the second data, but since the transmission directions of the first data and the second data are opposite, the first device needs to determine the 2 nd symbol and/or the 5th symbol of the n +2 th slot as a reserved symbol.

And after the first device determines the second attribute and/or the reserved symbol of each time unit in the set in the fourth unit, the first device performs data transmission with the second device.

Optionally, when each time unit in the first time unit set transmits data with the first device, the second device calculates available time-frequency resources according to the remaining available symbol number, calculates the size of a transmittable data block according to the new time-frequency resources, performs corresponding coding and modulation, and transmits data with the first device.

Optionally, when each time unit in the first time unit set performs data transmission with the first device, the second device may also calculate the TB data block size according to a time unit scheduled by the control information that is sent first, and when the second device sends the subsequent control information to the first device, the second device also adds the reserved symbol to the control information and sends the control information to the first device. And the first equipment determines the reserved symbols and the symbol attributes according to the control information received later, sends the HARQ feedback information on the uplink symbols on the corresponding time units according to the scheduling, and transmits data on other symbols according to the attributes of each time unit in the original first time unit set.

Fig. 2 to fig. 14 illustrate the communication method 200 according to the embodiment of the present application in detail. Hereinafter, a communication device according to an embodiment of the present application will be described in detail with reference to fig. 15 to 18.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is introduced from the perspective of the terminal device, the network device, and the interaction between the terminal device and the network device. It is understood that, for each network element, for example, the terminal device and the network device, to implement each function in the method provided in the foregoing embodiments of the present application, the terminal device and the network device include a hardware structure and/or a software module corresponding to executing each function. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the terminal device and the network device may be divided into the functional modules according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

Fig. 15 shows a possible example of the composition of the communication device mentioned above and in the embodiments, in the case of dividing the functional modules by corresponding functions, fig. one, which is capable of executing the steps executed by the network device in any of the method embodiments of the present application. As shown in fig. 15, the communication apparatus is a network device or a communication apparatus supporting the network device to implement the method provided in the embodiment, and for example, the communication apparatus may be a chip system. The communication apparatus may include: a transmission unit 1501 and a processing unit 1502.

A sending unit 1501 is configured to support a communication apparatus to execute the method described in the embodiment of the present application. For example, the sending unit 1501 is configured to execute or support the communication apparatus to execute 610 to 630 of the communication method shown in fig. 6.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

The communication device provided by the embodiment of the application is used for executing the method of any embodiment, so that the same effects as the method of the embodiment can be achieved.

The entity device corresponding to the receiving unit may be a receiver, the entity device corresponding to the sending unit may be a transmitter, and the entity device corresponding to the processing unit may be a processor.

Fig. 16 shows a possible example of the composition of the communication apparatus mentioned above and in the embodiments, in the case of dividing the functional modules by corresponding functions, fig. two, which is capable of executing the steps executed by the terminal device in any of the method embodiments of the present application. As shown in fig. 16, the communication apparatus is a terminal device or a communication apparatus supporting the terminal device to implement the method provided in the embodiment, and for example, the communication apparatus may be a chip system. The communication apparatus may include: a receiving unit 1601 and a processing unit 1602.

A receiving unit 1601 for supporting a communication device to perform the method described in the embodiments of the present application. For example, the receiving unit 1601 is used for receiving data, for example, for supporting the communication apparatus to execute 610 to 630 in the communication method shown in fig. 6.

A processing unit 1602 for executing or for supporting the communication device to execute 640 of the communication method illustrated in fig. 6.

Fig. 17 shows a schematic diagram of a possible structure of the network device involved in the above embodiment.

The network device includes a transmitter/receiver 1701, a controller/processor 1702, and a memory 1703. The transmitter/receiver 1701 is used to support information transceiving between a network device and the terminal device as described in the above embodiments. The controller/processor 1702 performs various functions for communicating with the terminal devices. In the uplink, uplink signals from the terminal device are received via the antenna, conditioned by the receiver 1701, and further processed by the controller/processor 1702 to recover the traffic data and signaling information sent by the terminal device. On the downlink, traffic data and signaling messages are processed by a controller/processor 1702 and conditioned by a transmitter 1701 to generate a downlink signal, which is transmitted via the antenna to the terminal devices. Controller/processor 1702 also performs the processes described in fig. 5 and 6 with respect to the network device and/or other processes for the techniques described herein. The memory 1703 is used to store program codes and data of the network device.

Fig. 18 shows a simplified schematic diagram of a possible design structure of the terminal device involved in the above-described embodiment. The terminal device includes a transmitter 1801, a receiver 1802, a controller/processor 1803, a memory 1804, and a modem processor 1805.

The transmitter 1801 is configured to transmit an uplink signal, which is transmitted to the network device in the above-described embodiment via an antenna. On the downlink, the antenna receives a downlink signal (DCI) transmitted by the network device in the above-described embodiment. The receiver 1802 is configured to receive a downlink signal (DCI) received from an antenna. In modem processor 1805, an encoder 1806 receives and processes traffic data and signaling messages to be sent on the uplink. A modulator 1807 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples. A demodulator 1809 processes (e.g., demodulates) the input samples and provides symbol estimates. A decoder 1808 processes (e.g., decodes) the symbol estimates and provides decoded data and signaling messages for transmission to the terminal device. Encoder 1806, modulator 1807, demodulator 1809, and decoder 1808 may be implemented by a combined modem processor 1805. These elements are processed according to the radio access technology employed by the radio access network.

The controller/processor 1803 controls and manages the operation of the terminal device, and is configured to execute the processing performed by the terminal device in the foregoing embodiment. For example, for controlling the terminal device to determine a second attribute of each time cell in a fourth set of time cells, the second attribute including an uplink or a downlink, the fourth set of time cells being an intersection of the second set of time cells and the third set of time cells and/or other processes of the techniques described herein. By way of example, the controller/processor 1803 may be configured to enable the terminal device to perform step 640 of FIG. 6.

In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

In the embodiment of the present application, the memory may be a non-volatile memory, such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory (e.g., a random-access memory (RAM)). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

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

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

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The method provided by the embodiment of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, 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 loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a terminal, or other programmable apparatus. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (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., Digital Video Disk (DVD)), or a semiconductor medium (e.g., SSD), among others.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, comprising:

the method comprises the steps that first equipment receives first configuration information, wherein the first configuration information is used for indicating a first attribute of each time unit in a first time unit set corresponding to a first time-frequency resource, and the first attribute comprises a flexible symbol attribute;

the first device receives first control information, where the first control information is used to schedule the first device to receive first data on a time-frequency resource corresponding to a second time unit set, where the second time unit set is a subset of the first time unit set;

the first device receives second control information, wherein the second control information is used for scheduling the first device to send second data on time-frequency resources corresponding to a third time unit set, and the third time unit set and the second time unit set have intersection;

the first device determines a second attribute of each time cell in a fourth time cell set, where the second attribute includes an uplink or a downlink, and the fourth time cell set is an intersection of the second time cell set and the third time cell set.

2. The method of claim 1, wherein the first device determining the second attribute for each time unit in the fourth set of time units comprises:

and the first equipment determines the second attribute of each time unit in the fourth time unit set according to the service priority of the first data and the service priority of the second data.

3. The method of claim 1, wherein the first device determining the second attribute for each time unit in the fourth set of time units comprises:

the first device determines a second attribute of each time unit in a fourth set of time units according to the received first control information and the received time sequence of the second control information.

4. The method of claim 2, wherein the determining, by the first device, the second attribute of each time unit in the fourth set of time units according to the traffic priority of the first data and the traffic priority of the second data comprises:

the first equipment judges the service priority of the first data and the service priority of the second data;

the first device determines that the second attribute of each time unit in the fourth time unit set is downlink when the service priority of the first data is higher than the service priority of the second data; or the like, or, alternatively,

and under the condition that the service priority of the first data is not higher than the service priority of the second data, the first device determines that the second attribute of each time unit in the fourth time unit set is uplink.

5. The method of claim 4, wherein before the first device determines the traffic priority of the first data and the traffic priority of the second data, the method further comprises:

the first device obtains indication information, where the indication information is used to indicate a service priority of the first data and/or a service priority of the second data.

6. The method according to claim 5, wherein the indication information comprises Radio Network Temporary Identity (RNTI).

7. The method of claim 4, wherein the determining, by the first device, the traffic priority of the first data and the traffic priority of the second data comprises:

and the first equipment judges the service priority of the first data and the service priority of the second data according to the control search space.

8. The method of claim 3, wherein the first device determining the second attribute of each time unit in the fourth set of time units according to the received first control information and the received second control information in time order comprises:

9. The method according to any one of claims 1, 2, and 4 to 7, wherein the first data comprises data carried by a downlink channel or a downlink reference signal.

10. The method according to any one of claims 1, 2, and 4 to 7, wherein the second data comprises data carried by an uplink channel or an uplink reference signal.

11. A communications apparatus, comprising:

a transceiver module, configured to receive first configuration information, where the first configuration information is used to indicate a first attribute of each time unit in a first time unit set corresponding to a first time-frequency resource, and the first attribute includes a flexible symbol attribute;

a transceiver module, further configured to receive first control information, where the first control information is used to schedule the first device to receive first data on a time-frequency resource corresponding to a second time unit set, and the second time unit set is a subset of the first time unit set;

the transceiver module is further configured to receive second control information, where the second control information is used to schedule the first device to send second data on a time-frequency resource corresponding to a third time unit set, and the third time unit set and the second time unit set have an intersection;

a processing module, configured to determine a second attribute of each time unit in a fourth time unit set, where the second attribute includes an uplink or a downlink, and the fourth time unit set is an intersection of the second time unit set and the third time unit set.

12. The apparatus of claim 11, wherein the processing module is specifically configured to determine the second attribute of each time unit in the fourth set of time units according to a traffic priority of the first data and a traffic priority of the second data.

13. The apparatus of claim 11, wherein the processing module is further specifically configured to determine the second attribute of each time unit in the fourth set of time units according to a time order of the received first control information and the received second control information.

14. The apparatus of claim 12, wherein the processing module is specifically configured to determine the second attribute of each time unit in the fourth set of time units according to the traffic priority of the first data and the traffic priority of the second data comprises:

judging the service priority of the first data and the service priority of the second data;

determining that the second attribute of each time unit in the fourth time unit set is downlink when the service priority of the first data is higher than the service priority of the second data; or the like, or, alternatively,

and determining that the second attribute of each time unit in the fourth time unit set is uplink under the condition that the service priority of the first data is not higher than the service priority of the second data.

15. The apparatus according to claim 14, wherein the transceiver module is further configured to obtain indication information, and the indication information is used to indicate a traffic priority of the first data and/or a traffic priority of the second data.

16. The apparatus of claim 15, wherein the indication information comprises a Radio Network Temporary Identity (RNTI).

17. The apparatus of claim 14, wherein the processing module is further specifically configured to determine a service priority of the first data and a service priority of the second data according to a control search space.

18. The apparatus of claim 13, wherein the processing module is specifically configured to determine the second attribute of each time unit in the fourth set of time units according to the received first control information and the received second control information in time order comprises:

determining that the second attribute of each time unit in the fourth time unit set is an uplink when the time for receiving the first control information is earlier than the time for receiving the second control information; or

And determining the second attribute of each time unit in the fourth time unit set as downlink when the time for receiving the first control information is not earlier than the time for receiving the second control information.

19. The apparatus according to any one of claims 11, 12, and 14 to 17, wherein the first data comprises data carried by a downlink channel or a downlink reference signal.

20. The apparatus according to any one of claims 11, 12, and 14 to 17, wherein the second data comprises data carried by an uplink channel or an uplink reference signal.

21. A computer-readable storage medium, comprising: computer software instructions;

the computer software instructions, when run in a communication device or a chip built in a communication device, cause the device to perform the communication method of any one of claims 1 to 10.