CN117769036A

CN117769036A - Communication method and device

Info

Publication number: CN117769036A
Application number: CN202211116823.1A
Authority: CN
Inventors: 周欢; 丁昱
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2024-03-26

Abstract

The application provides a communication method and device, which relate to the technical field of mobile communication, and after obtaining time domain resource configuration information, a terminal device obtains frequency domain resource configuration information if the time domain resource configuration information comprises a time slot format corresponding to a plurality of sub-bands, and can accurately determine whether time-frequency resources occupied by a first channel can be used for data transmission according to the time domain resource configuration information, the frequency domain resource configuration information and a transmission direction corresponding to the first channel.

Description

Communication method and device

Technical Field

The present disclosure relates to the field of mobile communications technologies, and in particular, to a communication method and device.

Background

In the existing communication system, the time division duplex (Time Division Duplex, TDD) system may cause an increase in service scheduling delay compared to the frequency division duplex (Frequency Division Duplex, FDD) system. In order to solve the time delay problem caused by the TDD system, one possible way is to introduce full duplex of the subbands, that is, different uplink and downlink time slot ratios are adopted for different subbands of the same carrier.

In the existing sub-band full duplex system, after the terminal equipment enters a connection state, the network equipment configures semi-static uplink and downlink time slot configuration of a terminal equipment level for each terminal equipment. However, how to accurately determine whether the currently occupied time-frequency resource is available for data transmission by the terminal device needs to be solved.

Disclosure of Invention

The application provides a communication method and equipment, which can solve the technical problem that in the prior art, terminal equipment is difficult to accurately judge whether currently occupied time-frequency resources can be used for data transmission or not in a sub-band full duplex scene.

In a first aspect, an embodiment of the present application provides a communication method, including:

acquiring time domain resource configuration information;

when the time domain resource configuration information comprises a time slot format corresponding to a plurality of sub-bands, acquiring frequency domain resource configuration information;

and determining whether a first time-frequency resource occupied by the first channel is available for data transmission according to the time-domain resource configuration information, the frequency-domain resource configuration information and the transmission direction corresponding to the first channel.

In some embodiments, the method further comprises:

when the time domain resource configuration information only comprises the time slot format of the time domain resource occupied by the terminal equipment, determining whether the first time frequency resource can be used for data transmission according to the time domain resource configuration information and the transmission direction corresponding to the first channel.

In some embodiments, the time domain resource configuration information is used to indicate a transmission direction corresponding to each symbol, and the frequency domain resource configuration information is used to indicate a transmission direction corresponding to each frequency domain resource.

In some embodiments, the transmission direction corresponding to the first channel is a downlink direction;

the determining whether the first time-frequency resource occupied by the first channel is available for data transmission according to the time-domain resource configuration information, the frequency-domain resource configuration information and the transmission direction corresponding to the first channel comprises:

determining whether a symbol occupied by the first channel and at least a part of frequency domain resources are used for uplink transmission or contain flexible symbols according to the time domain resource configuration information and the frequency domain resource configuration information;

and when the symbol occupied by the first channel and at least one part of frequency domain resources are used for uplink transmission or contain flexible symbols, determining that the first time-frequency resources are not used for data transmission.

In some embodiments, the transmission direction corresponding to the first channel is an uplink direction;

determining whether a symbol occupied by the first channel and at least a part of frequency domain resources are used for downlink transmission or contain flexible symbols according to the time domain resource configuration information and the frequency domain resource configuration information;

And when the symbol occupied by the first channel and at least one part of frequency domain resources are used for downlink transmission or contain flexible symbols, determining that the first time-frequency resources are not used for data transmission.

In some embodiments, the determining whether the first time-frequency resource occupied by the first channel is available for data transmission according to the transmission directions corresponding to the time-domain resource configuration information, the frequency-domain resource configuration information and the first channel includes:

determining symbols occupied by the first channel and frequency domain resources according to the time domain resource configuration information and the frequency domain resource configuration information;

when flexible symbols of the first channel and the second channel on the same frequency domain resource overlap, determining that the first time-frequency resource is not used for data transmission; the transmission direction corresponding to the first channel is inconsistent with the transmission direction corresponding to the second channel.

Determining the symbol position of the frequency domain resource occupied by the first channel according to the time domain resource configuration information and the frequency domain resource configuration information;

when there is an overlap of symbol positions of the frequency domain resources occupied by the first channel with symbol positions of the frequency domain resources occupied by the synchronization signal block (Synchronization Signal and PBCH block, SSB), it is determined that the first time-frequency resource is not used for data transmission.

and when the symbol positions of the frequency domain resources occupied by the first channel overlap with the symbol positions of the frequency domain resources occupied by the physical random access channel (Physical Random Access Channel, PRACH), determining that the first time-frequency resources are not used for data transmission.

when the symbol of the frequency domain resource occupied by the first channel is a flexible symbol, determining whether the first time-frequency resource can be used for data transmission according to the transmission direction of downlink control message (Downlink Control Information, DCI) scheduling and the transmission direction corresponding to the first channel.

In some embodiments, the determining whether the first time-frequency resource is available for data transmission according to the transmission direction of DCI scheduling and the transmission direction corresponding to the first channel includes:

if the transmission direction corresponding to the first channel is consistent with the transmission direction of the DCI scheduling, determining that the first time-frequency resource can be used for data transmission;

and if the transmission direction corresponding to the first channel is inconsistent with the transmission direction of the DCI scheduling, determining that the first time-frequency resource is not used for data transmission.

and when flexible symbols exist in the symbols of the frequency domain resources occupied by the first channel and flexible symbols exist in the symbols of the frequency domain resources occupied by the uplink channel or the uplink signal scheduled by the DCI, determining that the first time-frequency resource is not used for data transmission.

When a flexible symbol exists in the symbols of the frequency domain resources occupied by the first channel and a flexible symbol exists in the symbols of the frequency domain resources occupied by the downlink channel or the downlink signal scheduled by the DCI, determining that the first time-frequency resource is not used for data transmission under the condition that the symbols of the frequency domain resources occupied by the first channel meet a preset time interval.

In some embodiments, the transmission direction corresponding to the first channel is a downlink direction, and the first time-frequency resource occupies a plurality of subbands;

determining whether at least one sub-band exists in a plurality of sub-bands occupied by the first time-frequency resource for uplink transmission according to the time-domain resource configuration information and the frequency-domain resource configuration information;

and when at least one sub-band exists in the plurality of sub-bands occupied by the first time-frequency resource for uplink transmission, determining that the first time-frequency resource is not used for data transmission.

In some embodiments, the transmission direction corresponding to the first channel is an uplink direction, and the first time-frequency resource occupies a plurality of subbands;

determining whether at least one sub-band exists in a plurality of sub-bands occupied by the first time-frequency resource for downlink transmission according to the time-domain resource configuration information and the frequency-domain resource configuration information;

and when at least one sub-band is used for downlink transmission in a plurality of sub-bands occupied by the first time-frequency resource, determining that the first time-frequency resource is not used for data transmission.

And when the symbol positions of the frequency domain resources occupied by the first channel are overlapped with the symbol positions of the frequency domain resources occupied by the SSB in at least one sub-band, determining that the first time-frequency resources are not used for data transmission.

and when the symbol positions of the frequency domain resources occupied by the first channel are overlapped with the symbol positions of the frequency domain resources occupied by the PRACH in at least one sub-band, determining that the first time-frequency resources are not used for data transmission.

In some embodiments, the first time-frequency resource occupies a plurality of subbands;

Determining that the first time-frequency resource occupies a plurality of sub-bands according to the time-domain resource configuration information and the frequency-domain resource configuration information;

when the DCI is used for scheduling a plurality of sub-bands occupied by the first time-frequency resource, determining whether the first time-frequency resource is available for data transmission according to the transmission direction scheduled by the DCI and the transmission direction corresponding to the first channel.

determining that the first time-frequency resource occupies a plurality of subbands according to the time-domain resource configuration information and the frequency-domain resource configuration information, and configuring the symbol of at least one subband as a flexible symbol;

and when flexible symbols exist in symbols occupied by an uplink channel or an uplink signal scheduled by DCI, determining that the first time-frequency resource is not used for data transmission.

when flexible symbols exist in symbols occupied by downlink channels or downlink signals scheduled by DCI, determining that the first time-frequency resource is not used for data transmission under the condition that the symbols occupied by the first channels meet a preset time interval.

In a second aspect, embodiments of the present application provide a communication apparatus, including:

the acquisition module is used for acquiring time domain resource configuration information;

the acquisition module is further configured to acquire frequency domain resource configuration information when the time domain resource configuration information includes a time slot format corresponding to a plurality of subbands;

the determining module is configured to determine whether a first time-frequency resource occupied by a first channel is available for data transmission according to the time-domain resource configuration information, the frequency-domain resource configuration information, and a transmission direction corresponding to the first channel.

In a third aspect, an embodiment of the present application provides a terminal device, including: at least one processor and memory;

the memory is used for storing computer execution instructions;

the at least one processor is configured to execute the computer-executable instructions stored in the memory to implement the communication method as provided in the first aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions that, when executed by a computer, implement a communication method as provided in the first aspect.

In a fifth aspect, embodiments of the present application provide a computer program product comprising a computer program which, when executed by a computer, implements a communication method as provided in the first aspect.

According to the communication method and the communication device, after the terminal device obtains the time domain resource configuration information, if the time domain resource configuration information comprises the time slot formats corresponding to the plurality of sub-bands, the frequency domain resource configuration information is obtained, and whether the time-frequency resources occupied by the first channel can be used for data transmission or not can be accurately determined according to the time domain resource configuration information, the frequency domain resource configuration information and the transmission direction corresponding to the first channel.

Drawings

Fig. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application;

fig. 2a to fig. 2d are schematic diagrams of several transmission resource configurations according to embodiments of the present application;

fig. 3 is a schematic flow chart of a communication method according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a resource allocation according to an embodiment of the present application;

fig. 5 is a second schematic diagram of resource allocation provided in an embodiment of the present application;

fig. 6 is a schematic diagram III of a resource configuration provided in an embodiment of the present application;

fig. 7 is a schematic diagram of a resource allocation provided in an embodiment of the present application;

fig. 8 is a schematic diagram of a resource configuration provided in an embodiment of the present application;

FIG. 9 is a schematic diagram of a program module of a communication device according to an embodiment of the disclosure;

fig. 10 is a schematic hardware structure of a terminal device according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure. Furthermore, while the disclosure is presented in the context of an exemplary embodiment or embodiments, it should be appreciated that the various aspects of the disclosure may, separately, comprise a complete embodiment.

It should be noted that the brief description of the terms in the present application is only for convenience in understanding the embodiments described below, and is not intended to limit the embodiments of the present application. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.

The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between similar or similar objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprise" and "have," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to those elements expressly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

The term "module" as used in this application refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the function associated with that element.

The embodiments of the present application can be applied to various wireless communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolution system of NR system, LTE-based access to unlicensed spectrum, LTE-U) system over unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system over unlicensed spectrum, or other communication system, etc.

In general, the conventional wireless communication system supports a limited number of connections and is easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example: device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), and inter-Vehicle (Vehicle to Vehicle, V2V) communication, vehicle-to-anything (V2X) communication, etc., embodiments of the present application may also be applied to these communication systems.

Optionally, the wireless communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) scenario.

Referring to fig. 1, fig. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application. The wireless communication system provided in the present embodiment includes a terminal device 101 and a network device 102.

Alternatively, the terminal device 101 may be various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a remote station, a remote terminal, a mobile device, a wireless communication device, a User agent, or a User Equipment. But also cellular phones, cordless phones, session initiation protocol (Session Initiation Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, palm top computers (Personal Digital Assistant, PDA), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, car-mounted devices, wearable devices, terminal devices in future 5G networks or terminal devices in future evolving public land mobile communication networks (Public Land Mobile Network, PLMNs), etc., as long as the terminal devices are capable of wireless communication with network device 102.

Optionally, the network device 102, i.e. public mobile communication network device, is an interface device for accessing the internet by the terminal device 101, and is also a form of a radio Station, which refers to a radio transceiver Station for performing information transfer with the terminal device in a certain radio coverage area, and includes a Base Station (BS), which may also be referred to as a Base Station device, and is an apparatus deployed in a radio access network (Radio Access Network, RAN) to provide a wireless communication function. For example, the device for providing a base station function in the 2G network includes a base radio transceiver station (Base Transceiver Station, BTS), the device for providing a base station function in the 3G network includes a node B (NodeB), the device for providing a base station function in the 4G network includes an Evolved NodeB (eNB), the device for providing a base station function in the wireless local area network (Wireless Local Area Networks, WLAN) is an Access Point (AP), the device for providing a base station function in the 5G NR is a nb, and the node B (ng-eNB) continues to evolve, wherein the nb and the terminal device communicate using NR technology, the ng-eNB and the terminal device communicate using Evolved universal terrestrial radio Access network (Evolved-Universal Terrestrial Radio Access, E-UTRA) technology, and both the nb and the ng-eNB can be connected to the 5G core network. The network device 102 in the embodiment of the present application also includes a device that provides a base station function in a new communication system in the future, and the like.

The embodiment of the application defines a unidirectional communication link from an access network to terminal equipment as Downlink (DL), wherein data transmitted on the Downlink is Downlink data, and the transmission direction of the Downlink data is called as Downlink direction; and the unidirectional communication link from the terminal equipment to the access network is Uplink (UL), the data transmitted on the Uplink is Uplink data, and the transmission direction of the Uplink data is called as Uplink direction.

In a conventional TDD system, the uplink and downlink timeslot proportioning is wideband, i.e., the entire operating bandwidth is uplink or downlink in each timeslot. When one slot is downlink, it cannot be used to transmit uplink data, and vice versa. Therefore, the conventional TDD system may bring about an increase in traffic scheduling delay compared to the FDD system. In addition, in order to reduce the implementation complexity of the network device, the transmission directions of all the frequency domain resources of one TDD carrier at the same time are the same and are the uplink direction or the downlink direction, that is, the uplink and downlink time slot ratios of different frequency domain resources of one TDD carrier cannot be flexibly configured, and as the service diversifies, especially considering the service requirements of the vertical industry, the uplink and downlink transmission requirements of different services are different, and the single uplink and downlink time slot ratio cannot meet the requirements of different services.

For the above reasons, considering the implementation complexity of the network device at the same time, one possible way is to introduce full duplex of sub-bands, that is, different sub-bands of the same carrier adopt different uplink and downlink time slot ratios.

For a better understanding of the embodiments of the present application, reference is made to fig. 2a to 2d, and fig. 2a to 2d are schematic diagrams of several transmission resource configurations provided in the embodiments of the present application.

In fig. 2a to 2D, "D" represents a downlink subband and "U" represents an uplink subband.

The NR incorporates a Slot Format (SF) and includes the number of downlink symbols, the number of flexible symbols (hereinafter referred to as 'X') and the number of uplink symbols in a certain Slot. The SF includes three configurations, one configured by semi-static cell-level radio resource control (Radio Resource Control, RRC) signaling, the second configured by terminal device-specific RRC signaling, and the third configured by dynamic transmission of a slot format indication (Slot Format Indication, SFI) to a group of terminal devices, namely dynamic slot format information (dynamic SFI), using a physical downlink control channel (Physical Downlink Control Channel, PDCCH).

The SFI information carried on the PDCCH may indicate the format of one or more slots (slots) on one or more carriers. After the UE monitors the SFI, the UE obtains the index information and the index points to a UE-specific table, so that it can know which symbols in the slot are "UL", which are "DL", and which are "X". Wherein, the UE-specific table is configured and combined from a "single slot format" table, and the "single slot format" table contains all supportable slot formats (less than 256) in NR, including the following forms:

1. 0 switch point in one slot: 14 downlink symbols, or 14 flexible symbols, or 14 uplink symbols.

2. 1D/U switch point in one slot: a slot starts with 0 or more DL symbols and ends with 0 or more UL symbols, with a flexible symbol in the middle, and includes at least one flexible symbol, and one DL or one UL symbol.

3. 2D/U switch points within a slot: the first 7 symbols of the slot start with 0 or more DL symbols and end with at least 1 UL symbol, with the flexible symbol in the middle. The last 7 symbols of the slot start with 0 or more DL symbols, end with 0 or more UL symbols, and middle with 0 or more flexible symbols.

After the tdd-UL-DL-Configuration Common and tdd-UL-DL-Configuration Dedicated configurations determine the uplink and downlink configurations, the use of uplink and downlink symbols includes the following conditions:

condition 1: the PDCCH/physical downlink shared channel (Physical Downlink Shared Channel, PDSCH)/channel state information Reference Signal (Channel State Information-Reference Signal, CSI-RS) cannot be received on the uplink symbol.

Condition 2: the physical uplink control CHannel (Physical Uplink Control CHannel, PUCCH)/physical uplink shared CHannel (Physical Uplink Shared Channel, PUSCH)/physical random access CHannel (Physical Random Access Channel, PRACH)/CHannel sounding reference signal (Sounding Reference Signal, SRS) cannot be transmitted on the downlink symbol.

Condition 3: higher layers (highers) cannot be configured with both transmission and reception on the same flexible symbol, e.g. some periodic reception and periodic transmission of RRC configurations.

Condition 4: the SSB symbol positions are not expected to be configured as uplink symbols, if the PUSCH/PUCCH/PRACH symbol overlaps with any of the SSB symbols, the SSB symbol positions cannot transmit PUSCH/PUCCH/PRACH; in addition, the SSB symbol positions cannot transmit SRS either.

Condition 5: the PRACH indication, i.e. the symbol position configured to transmit the PRACH cannot be configured as a downlink symbol, including the Ngap symbol before the PRACH symbol, and if the PDSCH/PDCCH/CSI-RS overlaps with any of the symbols thereof, the symbol position configured to transmit the PRACH cannot receive the PDSCH/PDCCH/CSI-RS.

Condition 6: flexible on-symbol scheduling is flexible, and DCI scheduling determines whether downlink or uplink transmission is performed at the symbol position.

Condition 7: for TDD, the PDSCH/CSI-RS configured by a higher layer is on a flexible symbol, and if the PUSCH/PUCCH/PRACH/SRS transmitting symbol scheduled by DCI format 0-0/0-1/1-0/1/2-3 is on the flexible symbol, PDSCH/CSI-RS receiving is not configured; otherwise, PDSCH/CSI-RS reception may be configured.

Condition 8: for TDD, the PUSCH/PUCCH/PRACH/SRS transmitting symbol configured by the higher layer is in a flexible symbol set, if receiving PDSCH/CSI-RS indicated by DCI format 1-0/1-1/0-1, the PUSCH/PUCCH/PRACH/SRS is not transmitted on the premise that the transmitting symbol meets the time interval requirement.

After the terminal equipment enters the connection state, the network equipment configures semi-static uplink and downlink time slot configuration or dynamic uplink and downlink time slot ratio of the terminal equipment level for each terminal equipment, but the configuration of the connection state can only configure flexible time slots/symbols into uplink or downlink, and cannot change the configuration of uplink time slots/symbols and downlink time slots/symbols. At present, a judgment basis is needed by the terminal equipment to judge whether the currently occupied time-frequency resource can be used for data transmission.

In view of the above technical problems, in the embodiments of the present application, a communication method is provided, after obtaining time domain resource configuration information, if the time domain resource configuration information includes a slot format corresponding to a plurality of subbands, a terminal device obtains frequency domain resource configuration information, and according to the time domain resource configuration information, the frequency domain resource configuration information, and a transmission direction corresponding to a first channel, it can be accurately determined whether a time-frequency resource occupied by the first channel is available for data transmission. For details, reference is made to what is described in the following examples.

Referring to fig. 3, fig. 3 is a flow chart of a communication method according to an embodiment of the present application. In a possible embodiment, the communication method includes:

S301, acquiring time domain resource configuration information.

In some embodiments, the time domain resource configuration information includes SFI information, and the terminal device may obtain the SFI information from the PDCCH, where the SFI information may indicate a slot format of one or more slots on one or more carriers.

In some embodiments, the time domain resource configuration information may be used to indicate a transmission direction corresponding to each symbol.

S302, when the time domain resource configuration information comprises a time slot format corresponding to a plurality of sub-bands, acquiring frequency domain resource configuration information.

In some embodiments, when the time domain resource configuration information includes only the slot format of the sub-band corresponding to the terminal device, the terminal device may still determine whether the first time-frequency resource occupied by the first channel is available for data transmission according to the existing condition and the transmission direction corresponding to the first channel. And when the time domain resource configuration information comprises a time slot format corresponding to a plurality of sub-bands or all sub-bands, acquiring frequency domain resource configuration information.

In some embodiments, the above frequency domain resource configuration information may be used to indicate a transmission direction corresponding to each frequency domain resource.

S303, determining whether a first time-frequency resource occupied by a first channel is available for data transmission according to the time-domain resource configuration information, the frequency-domain resource configuration information and the transmission direction corresponding to the first channel.

In this embodiment of the present application, when determining whether the first time-frequency resource is available for data transmission, it is not only required to determine, according to the time-domain resource configuration information, whether the direction of the symbol occupied by the first time-frequency resource conflicts with the transmission direction corresponding to the first channel and some existing configuration rules, but also required to determine, according to the frequency-domain resource configuration information, whether the frequency-domain resource occupied by the first time-frequency resource conflicts with the slot format.

It can be understood that, compared with the prior art that only the symbol direction is used to determine whether the first time-frequency resource is available for data transmission, the method and the device for determining whether the occupied frequency domain resource conflicts with the slot format need to be determined on the basis of the existing symbol direction determination, so that whether the first time-frequency resource is available for data transmission can be determined more accurately.

According to the communication method provided by the application, after the terminal equipment obtains the time domain resource configuration information, if the time domain resource configuration information comprises the time slot formats corresponding to the plurality of sub-bands, the frequency domain resource configuration information is obtained, and whether the time-frequency resource occupied by the first channel can be used for data transmission can be accurately determined according to the time domain resource configuration information, the frequency domain resource configuration information and the transmission direction corresponding to the first channel.

Based on the description in the foregoing embodiments, in some embodiments, when the terminal device only obtains the slot format of the transmission resource currently occupied by the terminal device, it may still determine whether uplink transmission and downlink reception can be performed by using the transmission resource currently occupied according to the existing determination condition.

For example, when the currently occupied symbol of the terminal device is configured as an uplink symbol, the terminal device cannot perform downlink reception on the currently occupied symbol; when the currently occupied symbol of the terminal equipment is configured as a downlink symbol, the terminal equipment cannot perform uplink transmission on the currently occupied symbol.

When configuring the time slot format of the transmission resource, the network device needs to configure the time slot format information according to the frequency domain position of the expected terminal device.

In some embodiments, when the time domain resource configuration information acquired by the terminal device includes directions of multiple or all sub-bands, it is determined whether the currently occupied time-frequency resource can be sent up or received down, not only whether the direction of the occupied symbol conflicts with DL/UL, but also whether the occupied frequency domain resource conflicts with the slot format.

In the first embodiment, a subband may be used as a condition for determining whether transmission or reception is possible together with a slot format, including:

condition 1: when the transmission direction corresponding to the first channel is the downlink direction, if the symbol occupied by the first channel and at least a part of the frequency domain resources are used for uplink transmission or include flexible symbols, determining that the first time-frequency resources are not used for data transmission.

In some embodiments, the first channel may be a downlink physical channel such as PDCCH, PDSCH, or a downlink signal such as CSI-RS, which is not limited in the embodiments of the present application.

For example, if the symbol in which the PDCCH/PDSCH/CSI-RS is located and at least a portion of the frequency domain resources are indicated as uplink symbols by the higher layer signaling configuration or DCI format 2_0, or are indicated as flexible symbols by the DCI, the first time-frequency resource cannot be used to receive the PDCCH/PDSCH/CSI-RS.

Condition 2: when the transmission direction corresponding to the first channel is the uplink direction, if the symbol occupied by the first channel and at least a part of the frequency domain resources are used for downlink transmission or include flexible symbols, determining that the first time-frequency resources are not used for data transmission.

In some embodiments, the first channel may be an uplink physical channel such as PUSCH, PUCCH, PRACH, or an uplink signal such as SRS, which is not limited in the embodiments of the present application.

For example, if the symbol where PUSCH/PUCCH/PRACH/SRS is located and the frequency domain resource is indicated by the higher layer signaling configuration or DCI format 2_0 or is a downlink symbol or is indicated by DCI as a flexible symbol, the first time-frequency resource cannot be used for transmitting PUSCH/PUCCH/PRACH/SRS.

Condition 3: when flexible symbols of the first channel and the second channel on the same frequency domain resource overlap, determining that the first time-frequency resource is not used for data transmission; the transmission direction corresponding to the first channel is inconsistent with the transmission direction corresponding to the second channel.

In some embodiments, higher layer signaling cannot be configured with both transmission and reception on flexible symbols of the same block of frequency domain resources, e.g., some periodic reception and periodic transmission of RRC configurations.

Exemplary, referring to fig. 4, fig. 4 is a schematic diagram of a resource configuration provided in an embodiment of the present application; in some embodiments, when there is overlap of flexible symbols of PUSCH and PDSCH on the same frequency domain resource, it is determined that the first time-frequency resource is not used for transmitting PUSCH.

Condition 4: when the symbol positions of the frequency domain resources occupied by the first channel overlap with those of the frequency domain resources occupied by the SSB, it is determined that the first time-frequency resources are not used for data transmission.

In some embodiments, symbol positions of the frequency domain resources where the SSB is located or belongs are not expected to be configured as uplink symbols.

The first channel may be PUSCH, PUCCH, PRACH or the like.

For example, if the symbol of the frequency domain resource where the PUSCH/PUCCH/PRACH is located overlaps with any symbol of the frequency domain resource where the SSB is located or belongs to, the first time-frequency resource cannot be used for transmitting the PUSCH/PUCCH/PRACH; and the symbol position of the frequency domain resource where the SSB is located cannot transmit SRS.

Referring to fig. 5, fig. 5 is a second schematic diagram of resource allocation provided in an embodiment of the present application; in some embodiments, when the symbol of the frequency domain resource where the PUSCH is located overlaps with any symbol of the frequency domain resource where the SSB is located or belongs to, the first time-frequency resource is not used for transmitting the PUSCH.

Condition 5: and when the transmission direction corresponding to the first channel is the downlink direction, if the symbol position of the frequency domain resource occupied by the first channel is overlapped with the symbol position of the frequency domain resource occupied by the PRACH, determining that the first time-frequency resource is not used for data transmission.

The first channel may be PDSCH or PDCCH, or CSI-RS.

In some embodiments, the symbol position of the frequency domain resource where the PRACH is configured to transmit the PRACH cannot be configured as a downlink symbol, including an Ngap symbol before the frequency domain resource symbol where the PRACH is located, and if the frequency domain resource where the PDSCH/PDCCH/CSI-RS is located overlaps with any symbol of the frequency domain resources occupied by the PRACH, the first time-frequency resource cannot be used for receiving the PDSCH/PDCCH/CSI-RS.

Referring to fig. 6, fig. 6 is a third schematic diagram of resource allocation provided in an embodiment of the present application; in some embodiments, when the symbol of the frequency domain resource where the PDSCH is located overlaps with any symbol of the frequency domain resource where the PRACH occasion is located or belongs to, the first time-frequency resource is not used for receiving the PDSCH.

Condition 6: when the symbol of the frequency domain resource occupied by the first channel is a flexible symbol, determining whether the first time-frequency resource can be used for data transmission according to the transmission direction of DCI scheduling and the transmission direction corresponding to the first channel.

In some embodiments, if the higher layer signaling configuration or DCI indicates that the frequency domain resource symbol position is a flexible symbol, the DCI scheduling determines whether to receive or transmit uplink in the frequency domain resource symbol position.

If the transmission direction corresponding to the first channel is consistent with the transmission direction of DCI scheduling, the first time-frequency resource can be used for data transmission; if the transmission direction corresponding to the first channel is inconsistent with the transmission direction of the DCI scheduling, the first time-frequency resource is not used for data transmission.

For example, when the first channel is PDSCH, if the symbol of the frequency domain resource occupied by the DCI scheduling the first channel is downlink reception, the first time-frequency resource may be used to receive PDSCH; if the symbol of the frequency domain resource occupied by the DCI scheduling the first channel is uplink transmission, the first time-frequency resource is not available for receiving PDSCH. When the first channel is PUSCH, if the symbol of the frequency domain resource occupied by the DCI scheduling the first channel is downlink reception, the first time-frequency resource may not be used to transmit PUSCH; if the symbol of the frequency domain resource occupied by the DCI scheduling the first channel is uplink transmission, the first time-frequency resource may be used to transmit PUSCH.

Condition 7: when the transmission direction corresponding to the first channel is the downlink direction, if flexible symbols exist in the symbols of the frequency domain resources occupied by the first channel, and flexible symbols exist in the symbols of the frequency domain resources occupied by the uplink channel or the uplink signal scheduled by the DCI, determining that the first time-frequency resources are not used for data transmission.

The first channel may be PDSCH or CSI-RS.

For TDD, PDSCH/CSI-RS configured by high-layer signaling is on flexible symbol, if there is a transmission symbol of frequency domain resource of PUSCH/PUCCH/PRACH/SRS scheduled by DCI format 0-0/0-1/1-0/1/2-3 on flexible symbol, then the first time frequency resource does not receive PDSCH/CSI-RS; otherwise, the first time-frequency resource can receive PDSCH/CSI-RS.

Referring to fig. 7, fig. 7 is a schematic diagram of a resource configuration provided in an embodiment of the present application; in some embodiments, when the symbol of the frequency domain resource where the PDSCH is located is on a flexible symbol, if the transmission symbol of the frequency domain resource where the PUSCH scheduled by the DCI is located is on the flexible symbol, the first time-frequency resource does not perform PDSCH reception; otherwise, the first time-frequency resource can perform PDSCH reception.

Condition 8: when the transmission direction corresponding to the first channel is the uplink direction, if flexible symbols exist in the symbols of the frequency domain resources occupied by the first channel, and flexible symbols exist in the symbols of the frequency domain resources occupied by the downlink channel or the downlink signal scheduled by the DCI, determining that the first time-frequency resource is not used for data transmission under the condition that the symbols of the frequency domain resources occupied by the first channel meet the preset time interval.

The first channel may be an uplink physical channel such as PUSCH, PUCCH, PRACH, or an uplink signal such as SRS, which is not limited in the embodiment of the present application.

For TDD, the transmission symbol of the frequency domain resource where the PUSCH/PUCCH/PRACH/SRS configured by the higher layer signaling is located is in the flexible set, if the reception symbol of the frequency domain resource where the PDSCH/CSI-RS indicated by the DCI format 1-0/1-1/0-1 is located is on the flexible symbol, on the premise that the transmission symbol meets the time interval requirement, the first time-frequency resource is not used for transmitting the PUSCH/PUCCH/PRACH/SRS.

Referring to fig. 8, fig. 8 is a schematic diagram of a resource configuration provided in an embodiment of the present application; in some embodiments, when the symbol of the frequency domain resource where the PUSCH is located is on a flexible symbol, if the received symbol of the frequency domain resource where the PDSCH scheduled by the DCI is located is on the flexible symbol, the first time-frequency resource does not perform PUSCH transmission; otherwise, the first time-frequency resource may perform PUSCH transmission.

In the second embodiment, it may be determined whether the first time-frequency resource is in one sub-band or spans multiple sub-bands, and when in one sub-band, it may be determined in an existing manner whether the first time-frequency resource in this sub-band is available for data transmission, including:

condition 1: the PDCCH/PDSCH/CSI-RS cannot be received on the uplink symbols of this subband.

Condition 2: PUSCH/PUCCH/PRACH/SRS cannot be transmitted on the downlink symbol of this subband.

Condition 3: the higher layer cannot configure both transmission and reception on the same flexible symbol of this sub-band, e.g. some periodic reception and periodic transmission of the RRC configuration.

Condition 4: the SSB symbol position of this subband is not expected to be configured as an uplink symbol, and if the PUSCH/PUCCH/PRACH symbol of this subband overlaps with any of the SSB symbols of this subband, PUSCH/PUCCH/PRACH cannot be transmitted; the SSB symbol positions cannot transmit SRS either.

Condition 5: PRACH transmission, i.e., the symbol position of the PRACH configured to transmit this subband, cannot be configured as a downlink symbol, including the Ngap symbol preceding the PRACH symbol, and if the PDSCH/PDCCH/CSI-RS overlaps with any of its symbols, the PDSCH/PDCCH/CSI-RS cannot be received.

Condition 6: the DCI schedule determines whether any symbol positions in this subband are downlink or uplink.

Condition 7: for TDD, PDSCH/CSI-RS of this sub-band of high-level configuration is on flexible symbol, if there is a PUSCH/PUCCH/PRACH/SRS transmitting symbol scheduled by DCI format 0-0/0-1/0/1/2-3 on flexible symbol of this sub-band, then PDSCH/CSI-RS reception is not configured; otherwise, PDSCH/CSI-RS reception may be configured.

Condition 8: for TDD, the PUSCH/PUCCH/PRACH/SRS transmission symbol of this subband configured by the higher layer is in the flexible symbol set, if receiving the PDSCH/CSI-RS reception of this subband indicated by DCI format 1-0/1-1/0-1, the PUSCH/PUCCH/PRACH/SRS is not transmitted on the premise that the transmission symbol satisfies the time interval requirement.

In the second embodiment, when the first time-frequency resource spans multiple subbands, each subband is traversed, and when each subband meets the relevant condition, the first time-frequency resource can be used for data transmission; the first time-frequency resource is not available for data transmission when any of the following conditions is satisfied by any of the subbands.

Condition 1: and when the transmission direction corresponding to the first channel is the downlink direction, if at least one sub-band used for uplink transmission exists in a plurality of sub-bands occupied by the first time-frequency resource, determining that the first time-frequency resource is not used for data transmission.

The first channel may be a downlink physical channel such as PDCCH or PDSCH, or may be a downlink signal such as CSI-RS.

For example, when the PDCCH/PDSCH/CSI-RS spans multiple subbands, if at least one subband is configured or indicated as an uplink symbol, the PDCCH/PDSCH/CSI-RS cannot be received.

Condition 2: and when at least one sub-band exists in a plurality of sub-bands occupied by the first time-frequency resource for downlink transmission, determining that the first time-frequency resource is not used for data transmission.

The first channel may be an uplink physical channel such as PUSCH, PUCCH, PRACH or an uplink signal such as SRS.

For example, when PUSCH/PUCCH/PRACH/SRS spans multiple subbands, PUSCH/PUCCH/PRACH/SRS cannot be transmitted if at least one subband is configured or indicated as a downlink symbol.

Condition 3: and when the symbol position of the frequency domain resource occupied by the first channel is overlapped with the symbol position of the frequency domain resource occupied by the SSB in at least one sub-band, determining that the first time-frequency resource is not used for data transmission.

Where the frequency domain locations of the SSBs span multiple subbands, the symbol locations of all subbands are not expected to be configured as uplink symbols.

The first channel may be an uplink physical channel such as PUSCH, PUCCH, PRACH.

For example, when the PUSCH/PUCCH/PRACH symbol overlaps with any symbol corresponding to the SSB in at least one subband, PUSCH/PUCCH/PRACH cannot be transmitted; and the symbol position of the SSB within at least one sub-band cannot transmit SRS.

Condition 4: and when the symbol position of the frequency domain resource occupied by the first channel is overlapped with the symbol position of the frequency domain resource occupied by the PRACH in at least one sub-band, determining that the first time-frequency resource is not used for data transmission.

For example, when the PRACH symbol spans multiple subbands, the symbol positions of all the subbands are not expected to be configured for downlink reception, i.e., the symbol positions of all the subbands where the time-frequency resource configured to transmit the PRACH is located cannot be configured as downlink symbols, including the Ngap symbol before the PRACH symbol, and if the PDSCH/PDCCH/CSI-RS overlaps with any frequency-domain position and symbol thereof, the PDSCH/PDCCH/CSI-RS cannot be received.

Condition 5: when the DCI is used for scheduling a plurality of sub-bands occupied by the first time-frequency resources, determining whether the first time-frequency resources are available for data transmission according to the transmission direction of the DCI scheduling and the transmission direction corresponding to the first channel.

When the DCI schedule spans multiple subbands, the symbol positions of all the subbands determine whether to downlink or uplink according to the DCI schedule.

Condition 6: the transmission direction corresponding to the first channel is the downlink direction; the first time-frequency resource occupies a plurality of sub-bands, and the symbols of at least one sub-band are configured as flexible symbols; when flexible symbols exist in symbols occupied by an uplink channel or an uplink signal scheduled by DCI, determining that the first time-frequency resource is not used for data transmission.

For TDD, when PDSCH/CSI-RS configured by higher layer signaling spans multiple subbands, the symbol position of at least one subband is configured on a flexible symbol, and if there is a PUSCH/PUCCH/PRACH/SRS scheduled by DCI format 0-0/0-1/2-3 and at least one subband is on the flexible symbol, PDSCH/CSI-RS reception is not performed by the first time-frequency resource; otherwise, the first time-frequency resource can be configured for PDSCH/CSI-RS reception.

Condition 7: the transmission direction corresponding to the first channel is the uplink direction; the first time-frequency resource occupies a plurality of sub-bands, and the symbols of at least one sub-band are configured as flexible symbols; when flexible symbols exist in symbols occupied by downlink channels or downlink signals scheduled by DCI, under the condition that the symbols occupied by a first channel meet a preset time interval, determining that the first time-frequency resource is not used for data transmission.

For example, for TDD, when the PUSCH/PUCCH/PRACH/SRS configured by higher layer signaling spans multiple subbands, the symbol position transmission symbol of at least one subband is in the flexible symbol set, if PDSCH/CSI-RS reception indicated by DCI format1-0/1-1/0-1 is received, then PUSCH/PUCCH/PRACH/SRS is not transmitted on the premise that the transmission symbol satisfies the time interval requirement.

Based on the foregoing description of the embodiments, a communication device is further provided in the embodiments of the present application, and referring to fig. 9, fig. 9 is a schematic program module of a communication device provided in the embodiments of the present disclosure. In some embodiments, the communication device 90 includes:

An obtaining module 901, configured to obtain time domain resource configuration information.

The obtaining module 901 is further configured to obtain frequency domain resource configuration information when the time domain resource configuration information includes a slot format corresponding to a plurality of subbands.

A determining module 902, configured to determine whether a first time-frequency resource occupied by a first channel is available for data transmission according to the time-domain resource configuration information, the frequency-domain resource configuration information, and a transmission direction corresponding to the first channel.

According to the communication device provided by the application, after the terminal equipment obtains the time domain resource configuration information, if the time domain resource configuration information comprises the time slot formats corresponding to the plurality of sub-bands, the frequency domain resource configuration information is obtained, and whether the time-frequency resource occupied by the first channel can be used for data transmission can be accurately determined according to the time domain resource configuration information, the frequency domain resource configuration information and the transmission direction corresponding to the first channel.

In some implementations, the determining module 902 is further to:

In some embodiments, the transmission direction corresponding to the first channel is a downlink direction; the determining module 902 is specifically configured to:

In some embodiments, the transmission direction corresponding to the first channel is an uplink direction; the determining module 902 is specifically configured to:

In some embodiments, the determining module 902 is specifically configured to:

and when the symbol positions of the frequency domain resources occupied by the first channel overlap with those of the frequency domain resources occupied by the SSB, determining that the first time-frequency resources are not used for data transmission.

and when the symbol positions of the frequency domain resources occupied by the first channel overlap with those of the frequency domain resources occupied by the PRACH, determining that the first time-frequency resources are not used for data transmission.

In some embodiments, the determining module 902 is specifically configured to:

when the symbol of the frequency domain resource occupied by the first channel is a flexible symbol, determining whether the first time-frequency resource can be used for data transmission according to the transmission direction of DCI scheduling and the transmission direction corresponding to the first channel.

In some embodiments, the determining module 902 is specifically configured to:

In some embodiments, the transmission direction corresponding to the first channel is a downlink direction, and the first time-frequency resource occupies a plurality of subbands; the determining module 902 is specifically configured to:

In some embodiments, the transmission direction corresponding to the first channel is an uplink direction, and the first time-frequency resource occupies a plurality of subbands; the determining module 902 is specifically configured to:

In some embodiments, the first time-frequency resource occupies a plurality of subbands; the determining module 902 is specifically configured to:

It should be noted that, in the embodiment of the present application, the specific execution content of the acquiring module 901 and the determining module 902 may refer to the relevant content in the embodiment shown in fig. 3 to 8, which is not described herein.

The communication apparatus described in the above embodiments may include each module, which may be a software module, a hardware module, or a part of a software module and a part of a hardware module. For example, for each device or product applied to or integrated in a chip, each module included in the device or product may be implemented in hardware such as a circuit, or at least some modules may be implemented in software program, where the software program runs on a processor integrated in the chip, and the remaining (if any) some modules may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module contained in the device and product can be realized in a hardware mode such as a circuit, different modules can be located in the same component (such as a chip and a circuit module) of the chip module or in different components, or at least part of the modules can be realized in a software program, the software program runs in a processor integrated in the chip module, and the rest (if any) of the modules can be realized in a hardware mode such as a circuit; for each device or product applied to or integrated in the terminal, the included modules may all be implemented in hardware such as a circuit, and different modules may be located in the same component (e.g. a chip, a circuit module, etc.) or different components in the terminal, or at least some modules may be implemented in a software program, where the software program runs on a processor integrated in the terminal, and the remaining (if any) some modules may be implemented in hardware such as a circuit.

Further, based on the descriptions in the above embodiments, there is also provided a terminal device in the embodiments of the present application, where the terminal device includes at least one processor and a memory; wherein the memory stores computer-executable instructions; the at least one processor executes computer-executable instructions stored in the memory to perform steps performed by the terminal device in the communication method as described above.

For a better understanding of the embodiments of the present application, referring to fig. 10, fig. 10 is a schematic hardware structure of a terminal device provided in the embodiments of the present application.

As shown in fig. 10, the terminal device 100 of the present embodiment includes: a processor 1001 and a memory 1002; wherein the method comprises the steps of

Memory 1002 for storing computer-executable instructions;

the processor 1001 is configured to execute computer-executable instructions stored in the memory, so as to implement the steps executed by the terminal device in the communication method described in the foregoing embodiment, and specifically, reference may be made to the description related to the foregoing method embodiment.

Alternatively, the memory 1002 may be separate or integrated with the processor 1001.

When the memory 1002 is provided separately, the device further comprises a bus 1003 for connecting said memory 1002 and the processor 1001.

The present embodiment provides a computer-readable storage medium having stored therein computer-executable instructions that, when executed by a computer, implement the steps performed by a terminal device in the communication method described in the above embodiment.

The embodiments of the present application provide a computer program product comprising a computer program which, when executed by a computer, implements the steps performed by a terminal device in a communication method as described in the above embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple modules may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.

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

In addition, each functional module in each embodiment of the present application may be integrated in one processing unit, or each module may exist alone physically, or two or more modules may be integrated in one unit. The units formed by the modules can be realized in a form of hardware or a form of hardware and software functional units.

The integrated modules, which are implemented in the form of software functional modules, may be stored in a computer readable storage medium. The software functional modules described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or processor to perform some of the steps of the methods described in various embodiments of the present application.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic or optical disk, and the like, which can store program codes.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of communication, comprising:

acquiring time domain resource configuration information;

2. The method as recited in claim 1, further comprising:

3. The method of claim 1, wherein the time domain resource configuration information is used to indicate a transmission direction corresponding to each symbol, and wherein the frequency domain resource configuration information is used to indicate a transmission direction corresponding to each frequency domain resource.

4. The method of claim 3, wherein the transmission direction corresponding to the first channel is a downlink direction;

5. The method of claim 3, wherein the transmission direction corresponding to the first channel is an uplink direction;

6. The method of claim 3, wherein determining whether the first time-frequency resource occupied by the first channel is available for data transmission according to the transmission directions corresponding to the time-domain resource configuration information, the frequency-domain resource configuration information, and the first channel comprises:

7. The method of claim 3, wherein determining whether the first time-frequency resource occupied by the first channel is available for data transmission according to the transmission directions corresponding to the time-domain resource configuration information, the frequency-domain resource configuration information, and the first channel comprises:

And when the symbol positions of the frequency domain resources occupied by the first channel overlap with the symbol positions of the frequency domain resources occupied by the synchronous signal block SSB, determining that the first time-frequency resources are not used for data transmission.

8. The method of claim 3, wherein the transmission direction corresponding to the first channel is a downlink direction;

and when the symbol positions of the frequency domain resources occupied by the first channel overlap with the symbol positions of the frequency domain resources occupied by the physical random access channel PRACH, determining that the first time-frequency resources are not used for data transmission.

9. The method of claim 3, wherein determining whether the first time-frequency resource occupied by the first channel is available for data transmission according to the transmission directions corresponding to the time-domain resource configuration information, the frequency-domain resource configuration information, and the first channel comprises:

when the symbol of the frequency domain resource occupied by the first channel is a flexible symbol, determining whether the first time-frequency resource can be used for data transmission according to the transmission direction of downlink control message DCI scheduling and the transmission direction corresponding to the first channel.

10. The method of claim 9, wherein the determining whether the first time-frequency resource is available for data transmission according to the DCI scheduled transmission direction and the first channel corresponding transmission direction comprises:

11. The method of claim 3, wherein the transmission direction corresponding to the first channel is a downlink direction;

12. The method of claim 3, wherein the transmission direction corresponding to the first channel is an uplink direction;

13. The method of claim 3, wherein the transmission direction corresponding to the first channel is a downlink direction, and the first time-frequency resource occupies a plurality of subbands;

14. The method of claim 3, wherein the transmission direction corresponding to the first channel is an uplink direction, and the first time-frequency resource occupies a plurality of subbands;

15. The method of claim 3, wherein the transmission direction corresponding to the first channel is an uplink direction, and the first time-frequency resource occupies a plurality of subbands;

16. The method of claim 3, wherein the transmission direction corresponding to the first channel is a downlink direction, and the first time-frequency resource occupies a plurality of subbands;

17. A method according to claim 3, wherein the first time-frequency resource occupies a plurality of sub-bands;

18. The method of claim 3, wherein the transmission direction corresponding to the first channel is a downlink direction;

19. The method of claim 3, wherein the transmission direction corresponding to the first channel is an uplink direction;

20. A communication device, comprising:

21. A terminal device, comprising: at least one processor and memory;

the memory is used for storing computer execution instructions;

the at least one processor is configured to execute the computer-executable instructions stored in the memory to implement the communication method of any one of claims 1 to 19.

22. A computer-readable storage medium having stored therein computer-executable instructions that, when executed by a computer, implement the communication method of any one of claims 1 to 19.

23. A computer program product comprising a computer program which, when executed by a computer, implements the communication method of any of claims 1 to 19.