CN117998642A

CN117998642A - Communication method, device, system and storage medium

Info

Publication number: CN117998642A
Application number: CN202211389756.0A
Authority: CN
Inventors: 焦淑蓉; 花梦; 李军
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2024-05-07
Also published as: WO2024093741A1

Abstract

The application discloses a communication method, a device, a system and a storage medium. The method comprises the following steps: the network equipment and the terminal determine a time interval; the network equipment sends downlink control information to the terminal; and the terminal performs data transmission in the time domain resource scheduled by the downlink control information, wherein the time domain resource does not comprise the time interval. Corresponding apparatus, systems, and storage media are also disclosed. By adopting the scheme of the application, the time interval is determined, and when the downlink control information is used for scheduling the time domain resource for data transmission, the time domain resource does not comprise the time interval, so that the design requirement of SBFD systems can be met, and the reliability of communication is improved.

Description

Communication method, device, system and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communications method, apparatus, system, and storage medium.

Background

The adoption of the sub-band full duplex (subband full duplex, SBFD) technology can increase uplink coverage, reduce uplink transmission delay and improve uplink transmission performance. However, it is specified that on SBFD slots (or symbols), downlink transmission can only occur outside of the Uplink (UL) sub-band, whereas on conventional Downlink (DL) slots (or symbols), the bandwidth of the downlink transmission is the bandwidth of the DL portion Bandwidth (BWP). For a terminal receiving downstream in SBFD slots (or symbols), if a receive filter with a bandwidth of DLBWP is still used, the upstream interference signal on the upstream subband (UL subband) is received together. If the interfering terminal that is transmitting in the uplink is close to the terminal, i.e. the power of the uplink interfering signal is high, the duty cycle of the interference in the received signal is high, which not only introduces interference, but also affects the gear of the automatic gain control (automatic gain control, AGC).

In addition, if the bandwidth for downlink transmission in SBFD slots (or symbols) is greatly different from the bandwidth of DL BWP, the reception filter with the bandwidth of DLBWP is always adopted in SBFD slots, which also increases unnecessary power consumption.

Thus, at SBFD slots (or symbols), reception performance can be improved and power consumption reduced if reception can be done only on bandwidths other than UL subband.

Likewise, at SBFD slots (or symbols), transmission performance can be improved and power consumption reduced if transmission can be made only on bandwidths other than the downlink sub-band (DL subband).

However, it takes time for the terminal to switch the filter bandwidth, and a certain time interval is required in between from the time when the network device notifies the terminal of the downstream/upstream bandwidth to the completion of the filter bandwidth switching. In SBFD systems, how to set a proper time interval to meet the design requirement of SBFD systems and improve the reliability of communication is a problem to be solved by the application.

Disclosure of Invention

The application provides a communication method, a device, a system and a storage medium, which are used for determining a time interval, meeting the design requirement of SBFD systems and improving the reliability of communication.

In a first aspect, a communication method is provided, the method comprising: the terminal determines a time interval; the terminal receives downlink control information (downlink control information, DCI); the terminal performs data transmission in the time domain resource scheduled by the DCI, wherein the time domain resource does not comprise the time interval; wherein the location of the time interval comprises at least one of: the time interval is located within a sub-band full duplex time unit; the time interval is positioned in an uplink time unit; the time interval is located in the downlink time unit; the time interval is located in a time unit before the first time; the time interval is located in a time unit after the first time; the first time is a boundary between the downlink time unit and a sub-band full duplex unit adjacent to the downlink time unit, or the first time is a boundary between the uplink time unit and a sub-band full duplex unit adjacent to the uplink time unit.

In this aspect, for the SBFD system, for data transmission on sub-bands with different bandwidths, a certain time interval is required, and when the terminal determines the time interval and downlink control information schedules time domain resources to perform data transmission, the time domain resources do not include the time interval, so that the design requirement of the SBFD system can be met, and the reliability of communication is improved.

In addition, the terminal can switch the receiving bandwidth and the transmitting bandwidth in the time interval, and adopts proper bandwidth to perform signal transmission on SBFD time units, so that interference is reduced, performance is improved, and meanwhile, as data transmission cannot be performed in the switching process, the time domain resource of the data transmission does not comprise the time interval, so that the data transmission is not influenced by the switching process.

In one possible implementation, the method further comprises: the terminal switches the bandwidth size of the filter within the time interval. Wherein the filter includes a transmit filter and a receive filter. The receiving filter is used for receiving the radio frequency signals in the bandwidth and filtering the radio frequency signals outside the bandwidth; the transmission filter is used for transmitting radio frequency signals in the bandwidth and filtering radio frequency signals outside the bandwidth. The bandwidth here refers to a transmission bandwidth corresponding to the radio frequency transmission.

In the implementation, by setting the time interval, the terminal can conveniently switch the bandwidth of the filter in the time interval, so that the interference is reduced, the power consumption of the terminal equipment is also saved, and the system performance is improved.

In another possible implementation, the determining, by the terminal, a time interval includes: the terminal receives the time division duplex parameter and the sub-band full duplex parameter; the terminal determines the time interval according to the time division duplex parameter and the sub-band full duplex parameter; wherein the time division duplex parameter comprises at least one of the following parameters: the method comprises the steps of a time slot index of a downlink time slot, a time slot index of an uplink time slot and a time slot index of a flexible time slot, wherein at least one symbol of an uplink symbol, a downlink symbol and a flexible symbol in the flexible time slot is a symbol index; the sub-band full duplex parameters include at least one of the following: sub-band full duplex time cell index, sub-band position in sub-band full duplex time cell.

In a further possible implementation, the position of the time interval is protocol preset.

In yet another possible implementation, the method further includes: the terminal receives first information, which includes the location of the time interval.

In yet another possible implementation, the method further includes: the terminal transmits capability information including indication information supporting capability of configuring the time interval in a sub-band full duplex system.

In this implementation, SBFD technology is a newly introduced technology in NR, some terminals may support SBFD and some terminals may not support SBFD. For a terminal supporting SBFD, in order for the terminal to get access to the bandwidth size of the handover filter, the terminal should have the capability to support configuring the time interval in the SBFD system, and the terminal may make the network device aware of the capability of the terminal, so that the network device will schedule transmission and/or time interval configuration according to the capability of the terminal.

In yet another possible implementation, the capability information further includes a minimum length of the time interval; or the length of the time interval is protocol preset.

In this implementation, if the network device receives the capability information sent by the terminal, where the capability information includes a length of a time interval, the length of the time interval configured by the network device may be greater than or equal to a minimum length of the time interval reported by the terminal, so that the terminal may reach the switch of the filter bandwidth. The length of the time interval may also be protocol preset.

In yet another possible implementation, one or more symbols of the sub-band full duplex time unit are symbols for performing interference and/or channel quality measurements, the time interval being located before the symbols for performing interference and/or channel quality measurements.

In yet another possible implementation, there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, one of the two non-adjacent subbands is protocol preset or network configured, and the frequency domain resource of DCI scheduling includes part or all of the frequency domain resource of the one subband.

In the implementation, for two non-adjacent sub-bands with the same transmission direction exist on a sub-band full duplex time unit, the frequency domain resource of DCI scheduling comprises part or all of the frequency domain resource of one sub-band so as to meet the scheduling rule, meet the design requirement of SBFD systems and improve the reliability of communication.

In yet another possible implementation, there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, and the frequency domain resource of the DCI schedule includes part or all of the frequency domain resource of a target subband, where the target subband is one of the two non-adjacent subbands; wherein the target subband is a function of subband full duplex time unit variation; or the target sub-band is varied in units of consecutive sub-band full duplex time units.

In this implementation, the target subband is flexible.

In yet another possible implementation, when the default scheduling rule is a first scheduling rule and the DCI schedules the time domain resource according to a second scheduling rule, a position between the DCI and a position of the time domain resource scheduled by the DCI is greater than a first time threshold, where the first time threshold is a positive number; and/or when the default scheduling rule is the second scheduling rule and the DCI schedules the time domain resource according to the first scheduling rule, a position between the DCI and a position of the time domain resource scheduled by the DCI is greater than a second time threshold, where the second time threshold is a positive number; and/or the first DCI schedules the transmission of the first data according to the first scheduling rule, and the second DCI schedules the transmission of the second data according to the second scheduling rule, wherein the transmission position of the first data and the transmission position of the second data are larger than a third time threshold, and the third time threshold is a positive number; wherein the first scheduling rule is a transmission spanning two subbands and the second scheduling rule is a transmission within one of two non-adjacent subbands.

In this implementation, the bandwidth size of the filter is switched by the terminal for transmissions of different bandwidth sizes by the above-mentioned provision of the time threshold.

In yet another possible implementation, there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, and the frequency domain resource of the DCI schedule includes the two non-adjacent subbands, and the method further includes: the terminal performs data transmission in the two non-adjacent sub-bands according to the DCI, and starts a timer; and when the timer is stopped and no new data transmission exists during the running period of the timer, the terminal monitors data in one of the two non-adjacent subbands.

In this implementation, when there is no new data transmission for a period of time, the terminal monitors data in one of the two non-adjacent subbands, i.e. the terminal adopts a smaller filter bandwidth, which is beneficial to saving the power consumption of the terminal.

In yet another possible implementation, the frequency domain resource scheduled by the DCI for data transmission in the sub-band full duplex time unit includes a number of sub-bands associated with a number of sub-bands corresponding to a set of search spaces in which the DCI is located. Thereby simplifying the setup of the communication system.

In yet another possible implementation, the frequency domain resource scheduled by the DCI for data transmission in the sub-band full duplex time unit includes a number of sub-bands associated with a number of sub-bands corresponding to a control resource set in which the DCI is located. Thereby simplifying the setup of the communication system.

In a second aspect, there is provided a communication method, the method comprising: the network device determines a time interval; the network equipment sends DCI; the network equipment performs data transmission in the time domain resource scheduled by the DCI, wherein the time domain resource does not comprise the time interval; wherein the location of the time interval comprises at least one of: the time interval is located within a sub-band full duplex time unit; the time interval is positioned in an uplink time unit; the time interval is located in the downlink time unit; the time interval is located in a time unit before the first time; the time interval is located in a time unit after the first time; the first time is a boundary between the downlink time unit and a sub-band full duplex unit adjacent to the downlink time unit, or the first time is a boundary between the uplink time unit and a sub-band full duplex unit adjacent to the uplink time unit.

In this aspect, for the SBFD system, for data transmission on sub-bands with different bandwidths, a certain time interval is required, and when the network device schedules the time domain resource to perform data transmission by determining the time interval, the time domain resource does not include the time interval, so that the design requirement of the SBFD system can be met, and the reliability of communication is improved.

In one possible implementation, the network device determines a time interval, comprising: the network equipment transmits time division duplex parameters and sub-band full duplex parameters; the network equipment determines the time interval according to the time division duplex parameter and the sub-band full duplex parameter; wherein the time division duplex parameter comprises at least one of the following parameters: the method comprises the steps of a time slot index of a downlink time slot, a time slot index of an uplink time slot and a time slot index of a flexible time slot, wherein at least one symbol of an uplink symbol, a downlink symbol and a flexible symbol in the flexible time slot is a symbol index; the sub-band full duplex parameters include at least one of the following: sub-band full duplex time cell index, sub-band position in sub-band full duplex time cell.

In another possible implementation, the location of the time interval is protocol preset.

In yet another possible implementation, the method further includes: the network device transmits first information including a location of the time interval.

In yet another possible implementation, the method further includes: the network device receives capability information including indication information supporting a capability to configure the time interval in a sub-band full duplex system.

In yet another possible implementation, the frequency domain resource scheduled by the DCI for data transmission in the sub-band full duplex time unit includes a number of sub-bands associated with a number of sub-bands corresponding to a set of search spaces in which the DCI is located.

In yet another possible implementation, the frequency domain resource scheduled by the DCI for data transmission in the sub-band full duplex time unit includes a number of sub-bands associated with a number of sub-bands corresponding to a control resource set in which the DCI is located.

In a third aspect, a communication apparatus is provided, which can implement the communication method in the first aspect. The communication means may be, for example, a terminal or a system-on-chip of a terminal. The above method may be implemented by software, hardware, or by hardware executing corresponding software.

In a possible implementation manner, the communication device includes a transceiver unit and a processing unit, where the processing unit is configured to determine a time interval; the receiving and transmitting unit is used for receiving DCI; the receiving and transmitting unit is further configured to perform data transmission in the time domain resource scheduled by the DCI, where the time domain resource does not include the time interval; wherein the location of the time interval comprises at least one of: the time interval is located within a sub-band full duplex time unit; the time interval is positioned in an uplink time unit; the time interval is located in the downlink time unit; the time interval is located in a time unit before the first time; the time interval is located in a time unit after the first time; the first time is a boundary between the downlink time unit and a sub-band full duplex unit adjacent to the downlink time unit, or the first time is a boundary between the uplink time unit and a sub-band full duplex unit adjacent to the uplink time unit.

Optionally, the processing unit is further configured to switch the bandwidth size of the filter in the time interval.

Optionally, the transceiver unit is further configured to receive a time division duplex parameter and a subband full duplex parameter; the processing unit is further configured to determine the time interval according to the time division duplex parameter and the subband full duplex parameter; wherein the time division duplex parameter comprises at least one of the following parameters: the method comprises the steps of a time slot index of a downlink time slot, a time slot index of an uplink time slot and a time slot index of a flexible time slot, wherein at least one symbol of an uplink symbol, a downlink symbol and a flexible symbol in the flexible time slot is a symbol index; the sub-band full duplex parameters include at least one of the following: sub-band full duplex time cell index, sub-band position in sub-band full duplex time cell.

Optionally, the location of the time interval is protocol preset.

Optionally, the transceiver unit is further configured to receive first information, where the first information includes a location of the time interval.

Optionally, the transceiver unit is further configured to send capability information, where the capability information includes indication information that supports a capability of configuring the time interval in a sub-band full duplex system.

Optionally, the capability information further includes a minimum length of the time interval; or the length of the time interval is protocol preset.

Optionally, one or more symbols of the sub-band full duplex time unit are symbols for performing interference and/or channel quality measurements, and the time interval precedes the symbols for performing interference and/or channel quality measurements.

Optionally, there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, one of the two non-adjacent subbands is preset by a protocol or configured by a network, and the frequency domain resource of DCI scheduling includes part or all of the frequency domain resource of the one subband.

Optionally, there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, and the frequency domain resource of DCI scheduling includes part or all of the frequency domain resource of a target subband, where the target subband is one of the two non-adjacent subbands; wherein the target subband is a function of subband full duplex time unit variation; or the target sub-band is varied in units of consecutive sub-band full duplex time units.

Optionally, when the default scheduling rule is a first scheduling rule and the DCI schedules the time domain resource according to a second scheduling rule, a position between the DCI and a position of the time domain resource scheduled by the DCI is greater than a first time threshold, where the first time threshold is a positive number; and/or when the default scheduling rule is the second scheduling rule and the DCI schedules the time domain resource according to the first scheduling rule, a position between the DCI and a position of the time domain resource scheduled by the DCI is greater than a second time threshold, where the second time threshold is a positive number; and/or the first DCI schedules the transmission of the first data according to the first scheduling rule, and the second DCI schedules the transmission of the second data according to the second scheduling rule, wherein the transmission position of the first data and the transmission position of the second data are larger than a third time threshold, and the third time threshold is a positive number; wherein the first scheduling rule is a transmission spanning two subbands and the second scheduling rule is a transmission within one of two non-adjacent subbands.

Optionally, there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, the frequency domain resource scheduled by the DCI includes the two non-adjacent subbands, and the transceiver unit is further configured to perform data transmission in the two non-adjacent subbands according to the DCI; the processing unit is also used for starting a timer; and the transceiver unit is further configured to monitor data in one of the two non-adjacent subbands when the timer is stopped if no new data transmission exists during the running of the timer.

Optionally, the number of subbands included in the frequency domain resource for data transmission scheduled by the DCI in the subband full duplex time unit is associated with the number of subbands corresponding to the search space set where the DCI is located.

Optionally, the number of subbands included in the frequency domain resource for data transmission scheduled by the DCI in the subband full duplex time unit is associated with the number of subbands corresponding to the control resource set where the DCI is located.

In a fourth aspect, a communication apparatus is provided, which can implement the communication method in the second aspect. The communication means may be, for example, a network device or a system-on-chip in a network device. The above method may be implemented by software, hardware, or by hardware executing corresponding software.

In one possible implementation, the communication device includes a transceiver unit and a processing unit; wherein the processing unit is used for determining a time interval; the receiving and transmitting unit is used for transmitting DCI; the receiving and transmitting unit is further configured to perform data transmission in the time domain resource scheduled by the DCI, where the time domain resource does not include the time interval; wherein the location of the time interval comprises at least one of: the time interval is located within a sub-band full duplex time unit; the time interval is positioned in an uplink time unit; the time interval is located in the downlink time unit; the time interval is located in a time unit before the first time; the time interval is located in a time unit after the first time; the first time is a boundary between the downlink time unit and a sub-band full duplex unit adjacent to the downlink time unit, or the first time is a boundary between the uplink time unit and a sub-band full duplex unit adjacent to the uplink time unit.

Optionally, the transceiver unit is further configured to send a time division duplex parameter and a subband full duplex parameter; the processing unit is further configured to determine the time interval according to the time division duplex parameter and the subband full duplex parameter; wherein the time division duplex parameter comprises at least one of the following parameters: the method comprises the steps of a time slot index of a downlink time slot, a time slot index of an uplink time slot and a time slot index of a flexible time slot, wherein at least one symbol of an uplink symbol, a downlink symbol and a flexible symbol in the flexible time slot is a symbol index; the sub-band full duplex parameters include at least one of the following: sub-band full duplex time cell index, sub-band position in sub-band full duplex time cell.

Optionally, the location of the time interval is protocol preset.

Optionally, the transceiver unit is further configured to send first information, where the first information includes a location of the time interval.

Optionally, the transceiver unit is further configured to receive capability information, where the capability information includes indication information that supports a capability of configuring the time interval in a subband full duplex system.

With reference to the third aspect or the fourth aspect, in a further possible implementation manner, the communication apparatus in the third aspect or the fourth aspect includes a processor coupled to a memory; the processor is configured to support the apparatus to perform corresponding functions in the communication method described above. The memory is used to couple with the processor, which holds the necessary programs (instructions) and/or data for the device. Optionally, the communication device may further comprise a communication interface for supporting communication between the device and other network elements. Alternatively, the memory may be located inside the communication device or outside the communication device.

With reference to the third aspect or the fourth aspect, in a further possible implementation manner, the communication apparatus in the third aspect or the fourth aspect includes a processor and a transceiver, where the processor is coupled with the transceiver, and the processor is configured to execute a computer program or instructions to control the transceiver to receive and send information; the processor is also adapted to implement the above-described methods by logic circuits or executing code instructions when the processor executes the computer program or instructions. The transceiver device may be a transceiver, a transceiver circuit, or an input-output interface, and is configured to receive signals from devices other than the communication device and transmit the signals to the processor or send the signals from the processor to the devices other than the communication device. When the communication device is a chip, the transceiver is a transceiver circuit or an input/output interface.

When the communication device in the third aspect or the fourth aspect is a chip or a chip module, the transmitting unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit such as an input circuit or a communication interface. When the communication device is a terminal or an access network device, the sending unit may be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.

In a fifth aspect, there is provided a computer readable storage medium having stored therein a computer program or instructions which, when executed by a computer, implement the method of the above aspects.

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

In a seventh aspect, there is provided a communication system comprising the communication apparatus of the third aspect and the communication apparatus of the fourth aspect.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system 1000 to which an embodiment of the present application is applied;

fig. 2a is a schematic diagram of frequency division duplex according to an embodiment of the present application;

fig. 2b is a schematic diagram of a time division duplex according to an embodiment of the present application;

fig. 2c is a schematic diagram of full duplex sub-band according to an embodiment of the present application;

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

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

FIG. 4b is a schematic diagram of another SBFD subband according to an embodiment of the present application;

FIG. 5a is a schematic diagram of a time interval according to an embodiment of the present application;

FIG. 5b is a schematic diagram illustrating the position of another time interval according to an embodiment of the present application;

FIG. 5c is a schematic diagram illustrating a position of another time interval according to an embodiment of the present application;

FIG. 5d is a schematic diagram of a position of another time interval according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a position of another time interval according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a search space set according to an embodiment of the present application;

fig. 8a is a schematic diagram of a frequency domain resource scheduled by DCI according to an embodiment of the present application;

fig. 8b is a schematic diagram of another frequency domain resource scheduled by DCI according to an embodiment of the present application;

fig. 8c is a schematic diagram of another frequency domain resource scheduled by DCI according to an embodiment of the present application;

Fig. 9 is a schematic diagram of transmission scheduling in SBFD systems according to an embodiment of the present application;

Fig. 10 is a schematic diagram of transmission scheduling in another SBFD system according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

The embodiment of the application can be applied to various communication systems, such as: long term evolution (long term evolution, LTE) system LTE time division duplex (time division duplex, TDD), fifth generation (5 ^th generation, 5G) communication systems, future sixth generation (6 ^th generation, 6G) communication systems, and the like.

Fig. 1 is a schematic architecture diagram of a communication system 1000 to which an embodiment of the application applies. As shown in fig. 1, the communication system comprises a radio access network 100 and a core network 200, and optionally the communication system 1000 may further comprise the internet 300. The radio access network 100 may include at least one radio access network device (e.g., 110a and 110b in fig. 1) and may also include at least one terminal (e.g., 120a-120j in fig. 1). The terminal is connected with the wireless access network equipment in a wireless mode, and the wireless access network equipment is connected with the core network in a wireless or wired mode. The core network device and the radio access network device may be separate physical devices, or may integrate the functions of the core network device and the logic functions of the radio access network device on the same physical device, or may integrate the functions of part of the core network device and part of the radio access network device on one physical device. The terminals and the radio access network device may be connected to each other by wired or wireless means. Fig. 1 is only a schematic diagram, and other network devices may be further included in the communication system, for example, a wireless relay device and a wireless backhaul device may also be included, which are not shown in fig. 1.

The radio access network device may be a base station (base station), an evolved NodeB (eNodeB), a transmission and reception point (transmission receptionpoint, TRP), a next generation NodeB (gNB) in a fifth generation (5th generation,5G) mobile communication system, a next generation base station in a sixth generation (6th generation,6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; the present application may also be a module or unit that performs a function of a base station part, for example, a Central Unit (CU) or a Distributed Unit (DU). The radio access network device may be a macro base station (e.g. 110a in fig. 1), a micro base station or an indoor station (e.g. 110b in fig. 1), a relay node or a donor node, etc. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the wireless access network equipment. For convenience of description, a base station will be described below as an example of a radio access network device.

A terminal may also be referred to as a terminal device, user Equipment (UE), mobile station, mobile terminal, etc. The terminal may be widely applied to various scenes, for example, device-to-device (D2D), vehicle-to-device (vehicle to everything, V2X) communication, machine-type communication (MTC), internet of things (internet of things, IOT), virtual reality, augmented reality, industrial control, autopilot, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, and the like. The terminal can be a mobile phone, a tablet personal computer, a computer with a wireless receiving and transmitting function, a wearable device, a vehicle, an unmanned aerial vehicle, a helicopter, an airplane, a ship, a robot, a mechanical arm, intelligent household equipment and the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal.

The base station and the terminal may be fixed in position or movable. Base stations and terminals may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. The embodiment of the application does not limit the application scenes of the base station and the terminal.

The roles of base station and terminal may be relative, e.g., helicopter or drone 120i in fig. 1 may be configured as a mobile base station, terminal 120i being the base station for those terminals 120j that access radio access network 100 through 120 i; but for base station 110a 120i is a terminal, i.e., communication between 110a and 120i is via a wireless air interface protocol. Of course, communication between 110a and 120i may be performed via an interface protocol between base stations, and in this case, 120i is also a base station with respect to 110 a. Thus, both the base station and the terminal may be collectively referred to as a communication device, 110a and 110b in fig. 1 may be referred to as a communication device having base station functionality, and 120a-120j in fig. 1 may be referred to as a communication device having terminal functionality.

Communication can be carried out between the base station and the terminal, between the base station and between the terminal and the terminal through the authorized spectrum, communication can be carried out through the unlicensed spectrum, and communication can also be carried out through the authorized spectrum and the unlicensed spectrum at the same time; communication can be performed through a frequency spectrum of 6 gigahertz (GHz) or less, communication can be performed through a frequency spectrum of 6GHz or more, and communication can be performed using a frequency spectrum of 6GHz or less and a frequency spectrum of 6GHz or more simultaneously. The embodiment of the application does not limit the spectrum resources used by the wireless communication.

In the embodiment of the present application, the functions of the base station may be performed by a module (such as a chip) in the base station, or may be performed by a control subsystem including the functions of the base station. The control subsystem comprising the base station function can be a control center in the application scenarios of smart power grids, industrial control, intelligent transportation, smart cities and the like. The functions of the terminal may be performed by a module (e.g., a chip or a modem) in the terminal, or by a device including the functions of the terminal.

In the application, a base station sends a downlink signal or downlink information to a terminal, and the downlink information is borne on a downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on an uplink channel. The terminal establishes a radio connection with a cell controlled by the base station for communication with the base station. The cell with which the terminal has established a radio connection is called the serving cell of the terminal. The terminal may also be interfered by signals from neighboring cells when communicating with the serving cell.

In an embodiment of the present application, the time domain symbol may be an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol, or may be a discrete fourier transform spread-OFDM (Discrete Fourier Transform-spread-OFDM, DFT-s-OFDM) symbol. Symbols in embodiments of the present application refer to time domain symbols unless otherwise specified.

It should be understood that, in the embodiment of the present application, PDSCH, PDCCH and PUSCH are only used as examples of downlink data channels, downlink control channels and uplink data channels, respectively, and the data channels and the control channels may have different names in different systems and different scenarios, and the embodiment of the present application is not limited thereto.

Several duplex modes that may be involved in embodiments of the present application are described below:

currently, there are two duplex modes, frequency division duplex (frequency division duplex, FDD) and time division duplex (time division duplex, TDD) in New Radio (NR).

As shown in fig. 2a, in the schematic diagram of frequency division duplex provided in the embodiment of the present application, downlink transmission may be performed on DL BWP in time slot 0, or uplink transmission may be performed on UL BWP in time slot (slot) 0, where DL BWP and UL BWP are located on different carriers and are separated in the frequency domain.

As shown in fig. 2b, in the schematic diagram of time division duplex provided by the embodiment of the present application, the center frequency points of DL BWP and UL BWP are the same, and the bandwidths of DL BWP and UL BWP may be the same or different, and at the same time, the terminal may only perform uplink or downlink transmission. For example, on slot 0, only downlink transmission can be performed; on slot 4, only uplink transmission can be performed; slot3 is a flexible time slot, i.e. it can be used for uplink or downlink transmission, but cannot be used for uplink or downlink transmission at the same time. The minimum granularity of the uplink and downlink transmission switching is a symbol, for example slot3 is a flexible slot, and consists of 14 or 12 OFDM symbols, wherein the first M symbols are downlink symbols, the last N symbols are uplink symbols, the middle 14-M-N (or 12-M-N) symbols are flexible symbols, 0 < = M < = 14 (or 12), 0 < = N < = 14 (or 12), m+n < = 14 (or 12), the downlink symbols are used for downlink transmission, the uplink symbols are used for uplink transmission, the flexible symbols can be used for uplink and downlink, and the specific transmission direction is notified to the terminal by the network device through radio resource control (radio resource control, RRC) signaling or downlink control information (downlink control information, DCI) scheduling.

Compared with FDD, TDD occupies less frequency domain resources, but in TDD, uplink and downlink transmission cannot be performed simultaneously, for example, only downlink transmission can be performed on slot 0, and uplink transmission cannot be performed, so that uplink transmission delay is increased; on the other hand, the limited number of consecutive uplink timeslots may also result in limited uplink coverage.

In order to solve the latency problem of TDD, flexible duplexing is being discussed in the standard, and it can be understood that complementary TDD (complementaryTDD, C-TDD), which can also be referred to as Full duplex (Full duplex), and other names, such as sub-band Full duplex (subband Full duplex, SBFD), are currently discussed more. The core idea is that uplink and downlink transmission resources can be configured at the same time on a certain symbol or time slot of the TDD system, for example, as shown in fig. 2c, which is a schematic diagram of full duplex of a subband provided in the embodiment of the present application, a segment of frequency domain resource exists in a downlink BWP on a time slot, for example, slot 0, where uplink transmission can be performed on the frequency domain resource, so that uplink transmission can be performed on slot 0, and delay of uplink transmission is reduced, and the segment of frequency domain resource is generally called uplink subband. At this time, on slot 0, downlink transmission may also be performed. The network device can simultaneously perform uplink and downlink transmission on slot 0. The terminal may also perform uplink and downlink transmission (i.e., a full duplex terminal) on slot 0 at the same time, and may also perform only uplink or downlink transmission (i.e., a half duplex terminal). SBFD compared with TDD, the uplink resource is increased, so that the uplink transmission delay can be reduced, and the uplink coverage can be increased. For another example, on different symbols of the same slot, some symbols are used for downlink transmission only, and some symbols have both downlink and uplink frequency domain resources.

Likewise, there may be a segment of frequency domain resources in the uplink BWP, on which downlink transmission may be performed, where the segment of frequency domain resources is generally referred to as a downlink subband.

At present, when the standard support network device informs the terminal of the time-frequency domain resource information of SBFD sub-bands, the terminal supporting SBFD can optimize its own transmission behavior by using the information, thereby improving the performance.

For SBFD-enabled terminals, assuming UL subbands are configured on SBFD symbols, the SBFD system design also falls into the following options:

option 1: a SBFD-supported terminal does not expect to be scheduled by the network device for uplink transmission outside the UL subband or for downlink transmission in the UL subband on SBFD symbols;

option 2: the SBFD-supported terminal does not expect to be scheduled by the network device for uplink transmission outside the UL subband on SBFD symbols, and can be scheduled by the network device for downlink transmission in the UL subband;

Option 3: the SBFD-supported terminal can be scheduled by the network device to perform uplink transmission outside the UL sub-band on SBFD symbols, and is not expected to be scheduled by the network device to perform downlink transmission in the UL sub-band;

Option 4: the SBFD-capable terminal may be scheduled by the network device for uplink transmission outside of the UL subband or may be scheduled by the network device for downlink transmission within the UL subband on SBFD symbols.

The above options can be summarized as table 1:

TABLE 1

	Uplink transmission outside UL sub-band	Downlink transmission in UL sub-band
			Option 1	Whether or not	Whether or not
Option 2	Whether or not	Is that
			Option 3	Is that	Whether or not
Option 4	Is that	Is that

For the terminals in option 1 and option 3 described above, on SBFD slots, the downlink transmission can only occur outside the UL sub-band, while on the legacy DL slots, the bandwidth of the downlink transmission is that of DL BWP. For a terminal receiving downstream in SBFD slots, if a receiving filter with a bandwidth of DLBWP is still used, the upstream interference signals on the upstream sub-band are received together. If the interfering terminal in uplink transmission is close to the terminal, that is, the power of the uplink interfering signal is large, the duty ratio of the interference in the received signal is large, so that the interference can be introduced, and the gear of the AGC can be influenced.

In addition, if the bandwidth for downlink transmission in SBFD slots is greatly different from the bandwidth of DL BWP, the reception filter whose bandwidth is DL BWP is always adopted in SBFD slots, which also increases unnecessary power consumption.

Thus, at SBFD slots, reception performance can be improved and power consumption reduced if reception can be done only on bandwidths other than UL subband.

Similarly, assuming DL subbands are configured on SBFD symbols, uplink transmission can only occur outside of the DL subbands on SBFD slots. At SBFD slots, transmission performance can be improved and power consumption reduced if transmission can be made only on bandwidths other than the downlink sub-band.

The terminal needs time to switch the bandwidth of the filter, and a certain time interval is needed from the moment that the network equipment notifies the terminal of the downlink/uplink bandwidth to the completion of the bandwidth switching of the filter. For example, from the time when the network device notifies the terminal of the downstream/upstream bandwidth to the completion of the filter bandwidth switching, a number of symbols are required in the middle. The network device informs the terminal of the downlink/uplink bandwidth in two ways: one is RRC signaling configuration, which can be regarded as a semi-static configuration scheme, the change is slow, which is equivalent to that the terminal can know the change of the downlink bandwidth in advance for a period of time, and the number of symbols required by the bandwidth switching of the filter is small; the other is dynamic DCI notification, which can be regarded as dynamic rapid notification, and the terminal can firstly receive DCI and analyze the information about downlink/uplink bandwidth and use the DCI to guide the switching of the filter bandwidth, and the number of symbols needed for the switching of the filter bandwidth is larger.

Thus, in SBFD systems, the appropriate time interval may be set.

There is currently no corresponding solution.

In view of this, the present application provides a communication scheme, for SBFD systems, for transmitting data on subbands with different bandwidths, a certain time interval is required, and when a terminal and a network device schedule a time domain resource to transmit data by determining the time interval, the time domain resource does not include the time interval, so that the design requirement of SBFD systems can be satisfied, and the reliability of communication is improved.

Fig. 3 is a schematic flow chart of a communication method according to an embodiment of the present application. Illustratively, the method may include the steps of:

S301, the terminal sends capability information to the network equipment.

Accordingly, the network device receives the capability information.

As previously described, SBFD technology is a newly introduced technology in NR, some terminals may support SBFD and some terminals may not support SBFD. For a terminal supporting SBFD, in order for the terminal to get access to the bandwidth size of the handover filter, the terminal should have the capability to support the configuration of time intervals in the SBFD system or to support the bandwidth handover within the time intervals. And, the terminal may make the network device aware of the capabilities of the terminal, so that the network device may schedule transmissions and/or time interval configurations according to the capabilities of the terminal.

Thus, the terminal may send capability information to the network device. Wherein the capability information includes indication information supporting capability to configure a time interval in a sub-band full duplex system; or the capability information includes indication information supporting the capability of bandwidth switching within the time interval.

Of course, the following terminals, i.e. terminals supporting SBFD operations, may all have the above-mentioned capabilities, as are network devices which default to such terminals. This step is therefore optional and is shown in dashed lines.

The filter bandwidth of the terminal refers to the filter bandwidth of the terminal when receiving or transmitting signals, and by selecting the filter bandwidth adapted to the frequency domain range of the signals, the out-of-band interference can be reduced, and meanwhile, the power consumption can be saved.

In one example, the terminal may employ different upstream BWP in SBFD slots (or symbols) and upstream slots (or symbols), such as the terminal operating in a first upstream BWP in upstream slots (or symbols) and in second and/or third upstream BWP in SBFD slots, the frequency domain range of the second and/or third upstream BWP being within the frequency domain range of the first upstream BWP, and the bandwidth of the second and/or third upstream BWP being smaller than the bandwidth of the first upstream BWP.

In another example, different downlink BWP is employed in SBFD slots (or symbols) and downlink slots (or symbols), such as the terminal operates in the first downlink BWP in the downlink slots (or symbols) and operates in the second and/or third downlink BWP in the SBFD slots (or symbols), the frequency domain range of the second and/or third downlink BWP is located within the frequency domain range of the first downlink BWP, and the bandwidth of the second and/or third downlink BWP is smaller than the bandwidth of the first downlink BWP.

In another example, the terminal may operate in a first upstream BWP in an upstream slot (or symbol), in a first and/or second upstream sub-band in a SBFD slot (or symbol), the frequency domain range of the first and/or second upstream sub-band being located within the frequency domain range of the first upstream BWP, and the bandwidth of the first and/or second upstream sub-band being smaller than the bandwidth of the first upstream BWP.

In another example, the terminal operates in a first downlink BWP in a downlink slot (or symbol), operates in a first and/or second downlink sub-band in a SBFD slot (or symbol), the frequency domain range of the first and/or second downlink sub-band is located within the frequency domain range of the first downlink BWP, and the bandwidth of the first and/or second downlink sub-band is smaller than the bandwidth of the first downlink BWP.

In one implementation, the terminal reports capability information for performing bandwidth switching in a supporting time interval, where the length of the time interval may be preset by a protocol.

In another implementation, the terminal reports capability information for performing bandwidth switching in a supporting time interval, where the capability information may further include a length of the time interval, where the length of the time interval is selected from a candidate set of lengths of time intervals preset by the protocol. Or the capability information may further include a minimum length of a time interval, where the minimum length is a minimum time for the terminal to get to handover, and the length of the time interval configured by the network device may be greater than or equal to the minimum length, where the minimum length of the time interval is selected from a minimum length candidate set of the time interval preset by the protocol.

In another implementation, the terminal reports capability information supporting configuration of the time interval in the sub-band full duplex system, and the length of the time interval may be preset by a protocol. The terminal may switch the bandwidth in the time interval, and may switch between the sub-band bandwidth and the BWP bandwidth, where the bandwidth may be a receiving bandwidth or a transmitting bandwidth: if the bandwidth is the receiving bandwidth, the terminal can switch between the downlink sub-band bandwidth and the downlink BWP bandwidth in the time interval; if it is the transmission bandwidth, the terminal may switch between the uplink sub-band bandwidth and the uplink BWP bandwidth in the time interval.

In another implementation, the terminal reports capability information supporting configuration of the time interval in the sub-band full duplex system, where the capability information may further include a length of the time interval, where the length of the time interval is selected from a candidate set of lengths of time intervals preset by the protocol. Or the capability information may further include a minimum length of a time interval, where the minimum length is a minimum time for the terminal to get to handover, and the length of the time interval configured by the network device may be greater than or equal to the minimum length, where the minimum length of the time interval is selected from a minimum length candidate set of the time interval preset by the protocol. The terminal may switch the bandwidth in the time interval, and may switch between the sub-band bandwidth and the BWP bandwidth, where the bandwidth may be a receiving bandwidth or a transmitting bandwidth: if the bandwidth is the receiving bandwidth, the terminal can switch between the downlink sub-band bandwidth and the downlink BWP bandwidth in the time interval; if it is the transmission bandwidth, the terminal may switch between the uplink sub-band bandwidth and the uplink BWP bandwidth in the time interval.

S302a. the network device determines a time gap (time gap).

S302b, the terminal determines a time interval.

As previously described, on SBFD slots or SBFD symbols, downlink transmissions can only occur outside the UL sub-band; and/or uplink transmissions can only occur outside of the DL subbands. One resource period includes a downlink slot, an uplink slot, a flexible slot, and SBFD slots, or includes a downlink symbol, an uplink symbol, a flexible symbol, and a SBFD symbol. On DL symbols of a legacy DL slot or flexible slot, the bandwidth of the downlink transmission is the bandwidth of DL BWP; on the UL symbol of the conventional UL slot or flexible slot, the bandwidth of the uplink transmission is the bandwidth of UL BWP. The network device schedules the terminal to perform data transmission in the resource period, and for downlink transmission, the receiving filter of the terminal is switched from receiving in DL BWP to receiving in DL subband or from receiving in DL BWP, and a certain time interval is required to enable the terminal to switch the bandwidth size of the receiving filter. Similarly, for uplink transmission, the transmit filter of the terminal is switched from transmitting in ULBWP to transmitting in UL subband, or from transmitting in UL subband to transmitting in UL BWP, and a certain time interval is required to allow the terminal to switch the bandwidth size of the transmit filter.

Thus, the network device and the terminal can determine the appropriate time interval.

The terminal may determine the time interval by receiving a time division duplex parameter and a subband full duplex parameter transmitted by the network device, for example.

Wherein the time division duplex parameters include at least one of the following: the time slot index of the downlink time slot, the time slot index of the uplink time slot, the time slot index of the flexible time slot, and the symbol index of at least one symbol of the uplink symbol, the downlink symbol and the flexible symbol in the flexible time slot. The downlink symbols in the downlink time slot and the flexible time slot are used for downlink data transmission; uplink symbols in the uplink time slot and the flexible time slot are used for uplink data transmission; and flexible symbols in flexible slots can be used for both uplink and downlink data transmission.

Wherein the sub-band full duplex parameters include at least one of the following: sub-band full duplex time cell index, sub-band position in sub-band full duplex time cell. In this embodiment, the time unit may be any one of the following: frame, subframe (subframe), slot, minislot (mini-slot), OFDM symbol. The present embodiment is described by taking a time unit as a time slot.

Illustratively, SBFD slots may be part of the DL slots or UL slots configured in the TDD parameter, that is SBFD slots replace part or all of the DL slots configured by the TDD parameter, or SBFD slots replace part or all of the DL slots configured by the TDD parameter; SBFD slots may also be newly defined slots different from DL slots, UL slots, flexible slots, that is, all slots may be configured as four types of slots, DL slots, UL slots, flexible slots, SBFD slots, directly by SBFD parameters or new TDD parameters.

Illustratively, SBFD symbols may be DL symbols configured in TDD parameters or partial symbols in UL symbols, that is SBFD symbols replace some or all DL symbols configured by TDD parameters, or SBFD symbols replace some or all DL symbols configured by TDD parameters; the SBFD slots may also be newly defined symbols different from DL symbols, UL symbols, flexible symbols, that is, all symbols may be configured into four types of symbols, namely DL symbols, UL symbols, flexible symbols, SBFD symbols, directly by SBFD parameters or new TDD parameters.

SBFD subbands refer to the frequency domain locations of the uplink subbands and the downlink subbands.

Taking DL BWP as an example, as shown in fig. 4a, a schematic diagram of SBFD subbands provided in an embodiment of the present application is that SBFD time slots include a section of frequency domain resources, which can be used as uplink subbands for uplink transmission. The starting frequency domain position of the uplink sub-band corresponds to the starting frequency domain position of DL BWP.

As shown in fig. 4b, another schematic diagram of SBFD subbands is provided in the embodiment of the present application, where the uplink subband in the SBFD slot is located in the intermediate frequency domain of DLBWP.

Taking downlink transmission as an example, one resource period includes one or more DL time slots, one or more UL time slots, one or more flexible time slots, and one or more SBFD time slots, and the terminal receives the time division duplex parameter and the subband full duplex parameter sent by the network device, and determines SBFD time slots and DL time slots according to the time division duplex parameter and the subband full duplex parameter. Next, the terminal determines a time interval according to SBFD slots and DL slots.

Illustratively, determining the time interval may be determining a time domain position of the time interval within one resource period.

For example, for the location of the time interval, according to a default rule, protocol preset, or network configuration, there may be several implementations, which are not limited by the present embodiment:

Implementation 1: the time interval is located within a sub-band full duplex time unit. For example, taking a time unit as a time slot as an example, as shown in fig. 5a, a schematic position diagram of a time interval provided in an embodiment of the present application is shown, in a resource period shown in the figure, two adjacent SBFD time slots exist between two downlink time slots, and a network device and a terminal perform downlink data transmission in a first downlink time slot, where the data transmission is performed in a DL BWP. The network device and terminal then perform downlink data transmission on the DL subband in SBFD slots adjacent to the first downlink slot (i.e., the first SBFD slot in the figure). The reception filter of the terminal is switched to DL subband reception by reception in DL BWP, requiring a certain time interval. The time interval is located within SBFD slots. In this way, the network device and the terminal can perform downlink data transmission in a complete downlink time slot and a complete BWP, thereby improving the utilization ratio of resources.

Similarly, the network device and the terminal perform downlink data transmission in the second SBFD timeslot, and then the network device and the terminal perform downlink data transmission in a downlink timeslot adjacent to the second SBFD timeslot (i.e. the second downlink timeslot in the figure), where the time interval is located in the second SBFD timeslot, so that the network device and the terminal may perform downlink data transmission in one complete downlink timeslot and one complete DL BWP.

Implementation 2: the time interval is located within the downstream time cell. For example, taking a time unit as a time slot as an example, as shown in fig. 5b, another schematic diagram of a location of a time interval provided in an embodiment of the present application is shown, in which, in a resource period shown in the figure, there are two adjacent SBFD time slots between two downlink time slots, and the network device and the terminal perform downlink data transmission in the first downlink time slot, where the data transmission is performed in one DL BWP. The network device and terminal then perform downlink data transmission on the DL subband in SBFD slots adjacent to the first downlink slot (i.e., the first SBFD slot in the figure). The reception filter of the terminal is switched to DL subband reception by reception in DL BWP, requiring a certain time interval. The time interval is located in a downlink time slot.

Similarly, the network device and the terminal perform downlink data transmission in the second SBFD timeslot, and then the network device and the terminal perform downlink data transmission in a downlink timeslot adjacent to the second SBFD timeslot (i.e. the second downlink timeslot in the figure), where the time interval is located in the second downlink timeslot.

Implementation 3: the time interval is located within the uplink time unit. Illustratively, taking the example that the time unit is a time slot, there are two adjacent SBFD time slots between two uplink time slots, and the network device and the terminal perform uplink data transmission in the first uplink time slot, and the data transmission is performed in one UL BWP. The network device and terminal then transmit uplink data in SBFD slots adjacent to the first uplink slot, the data transmission being on the UL sub-band. The transmit filter of the terminal is switched to UL subband reception by reception in UL BWP, requiring a certain time interval. The time interval is located in the uplink time slot.

Similarly, the network device and the terminal perform uplink data transmission in the second SBFD time slot, and then the network device and the terminal perform uplink data transmission in the uplink time slot adjacent to the second SBFD time slot, where the time interval is located in the second uplink time slot.

Implementation 4: the time interval is located within a time unit prior to the first time. The first time is the boundary between the downlink time unit and the sub-band full duplex unit adjacent to the downlink time unit, or the first time is the boundary between the uplink time unit and the sub-band full duplex unit adjacent to the uplink time unit.

Taking the time unit as a time slot as an example, as shown in fig. 5c, a schematic diagram of the location of another time interval is provided for an embodiment of the present application, in the resource period shown in the figure, two adjacent SBFD time slots exist between two downlink time slots, and the network device and the terminal perform downlink data transmission in the first downlink time slot, where the data transmission is performed in one DL BWP. After a first time, the network device and terminal perform downlink data transmission in SBFD slots adjacent to the first downlink slot (i.e., the first SBFD slots in the figure), where the data transmission is performed on the DL subband. The reception filter of the terminal is switched to DL subband reception by reception in BWP, requiring a certain time interval. The time interval is located in a downstream time slot prior to the first time. Wherein the first time is a boundary between the first downlink timeslot and SBFD timeslots adjacent to the first downlink timeslot.

Similarly, the network device and the terminal perform downlink data transmission in the second SBFD time slot, after the first time, the network device and the terminal perform downlink data transmission in a downlink time slot adjacent to the second SBFD time slot (i.e. the second downlink time slot in the figure), and the time interval is located in a SBFD time slot before the first time.

Implementation 5: the time interval is located in a time unit after the first time. The first time is the boundary between the downlink time unit and the sub-band full duplex unit adjacent to the downlink time unit, or the first time is the boundary between the uplink time unit and the sub-band full duplex unit adjacent to the uplink time unit.

As shown in fig. 5d, a schematic position diagram of another time interval provided in this embodiment of the present application is shown, in which, in the resource period shown in this figure, two adjacent SBFD timeslots exist between two downlink timeslots, and the network device and the terminal perform downlink data transmission in the first downlink timeslot, where the data transmission is performed in one DL BWP. After a first time, the network device and terminal perform downlink data transmission in SBFD slots adjacent to the first downlink slot (i.e., the first SBFD slots in the figure), where the data transmission is performed on the DL subband. The reception filter of the terminal is switched to DL subband reception by reception in DL BWP, requiring a certain time interval. The time interval is located in SBFD slots after the first time. Wherein the first time is a boundary between the first downlink timeslot and SBFD timeslots adjacent to the first downlink timeslot.

Similarly, the network device and the terminal perform downlink data transmission in the second SBFD time slot, after the first time, the network device and the terminal perform downlink data transmission in a downlink time slot adjacent to the second SBFD time slot (i.e. the second downlink time slot in the figure), and the time interval is located in the downlink time slot after the first time.

The location of the time interval may be protocol preset, for example. Before the terminal leaves the factory, the time interval can be burnt into the memory of the terminal.

Or the location of the time interval may be network configured. For example, the terminal receives first information sent by the network device, and the network device carries the position of the time interval in the first information. For example, the first information may be any one of the following: RRC, medium access control-control element (medium access control-control element, MAC CE), downlink control information (downlink control information, DCI).

Further, when the network configures the position of the time interval, if the network device receives the capability information sent by the terminal, where the capability information includes the length of the time interval, the length of the time interval configured by the network device may be greater than or equal to the minimum length of the time interval reported by the terminal, so that the terminal can switch the bandwidth of the filter conveniently.

Further, the network device may configure the time interval to be a smaller length (denoted as a first length), schedule data for the terminal, and record the transmission performance of the terminal device as a first performance (such as a first error rate or a first block error rate); the length of the time interval is increased, namely, the time interval with the configuration length being larger than the first length (marked as a second length), and the transmission performance of the terminal equipment is marked as a second performance (such as a second error rate or a second block error rate); continuously increasing the time interval length, sequentially obtaining a third length and corresponding third performance, a fourth length and corresponding fourth performance. Or when the performance continuously increases along with the increase of the time interval, the maximum length in the alternative value set of the time interval is taken as the optimal time interval length of the terminal equipment, and the terminal equipment is continuously configured.

Implementation 6: one or more symbols of a sub-band full duplex time unit are symbols for performing interference and/or channel quality measurements, the time interval being located before the symbols for performing interference and/or channel quality measurements.

As shown in fig. 6, a schematic diagram of a position of another time interval according to an embodiment of the present application is provided, if a terminal needs to perform measurement in SBFD time units, a time-frequency resource position for measurement is configured by a network device, and if a frequency domain position of the measurement resource overlaps with a UL subband partially or completely, and a bandwidth of a receiving filter when the terminal device performs measurement is greater than a DL subband bandwidth, a symbol for measurement is equivalent to a DL/UL symbol because the position of the time interval is adjusted accordingly. The last symbols of the second SBFD slot in the figure are configured by the network device as measurement symbols, the position of the time interval is shifted forward, onto SBFD symbols before the measurement symbols.

Wherein, the measurement can be to measure the measurement signal sent by the adjacent cell interference terminal/network equipment, etc., thereby measuring the interference magnitude; the measurement signal transmitted by the network device of the cell can also be measured, so as to measure the quality of the communication channel. The measurement signal may be a downlink channel state information-reference signal (CHANNEL STATE information-REFERENCE SIGNAL, CSI-RS), a synchronization signal block (synchronization signal block, SSB), a synchronization signal, an uplink Sounding REFERENCE SIGNAL (SRS), or the like.

And S303, the network equipment transmits DCI to the terminal.

Accordingly, the terminal receives the DCI.

The DCI is used to schedule a terminal to perform downlink transmission (performed on PDSCH) or uplink transmission (performed on PUSCH) on a certain time domain resource and a certain frequency domain resource.

In NR, the DCI is carried on PDCCH. The DCI includes two fields (fields): a frequency domain resource configuration (Frequency domain resource assignment) and a time domain resource configuration (Time domain resource assignment). The UE determines a time-frequency resource block according to the information of the two domains, and PDSCH/PUSCH is transmitted in the resource block.

Depending on the purpose and content, DCI is divided into a number of formats and scrambled by different radio network temporary identities (RNTI radio network temporary identity, RNTI), such as random access-radio network temporary identities (RADAM ACCESS-radio network temporary identity, RA-RNTI), paging-radio network temporary identities (paging-radio network temporary identity, P-RNTI), etc. The PDCCH information of different terminals is distinguished by the corresponding cell-radio network temporary identity (cell-radio network temporary identity, C-RNTI) information, i.e. the cyclic redundancy check (cyclic redundancy check, CRC) of the DCI is masked by the C-RNTI.

The network device configures the set of alternatives PDCCH (PDCCH candidate) to be monitored for DCI through higher layer signaling (e.g. RRC signaling) to the terminal, and since the terminal does not know in advance on which alternative PDCCH or alternative PDCCHs the base station will send DCI, but the terminal can know what downlink control information it is currently expecting to receive according to the configuration information of the network device, the terminal tries to decode each alternative PDCCH in the set according to the configuration information, i.e. the terminal uses the corresponding RNTI to perform CRC check on the information on the alternative PDCCH, if the CRC check is successful, the terminal knows that the DCI information is successfully decoded. This set is the set of search spaces (SEARCH SPACE), as shown in FIG. 7. The terminal attempts to decode at each alternative PDCCH to determine if the behavior of the corresponding DCI is received is called blind detection (blind detection, BD).

As shown in fig. 7, one search space set may be composed of a plurality of candidate PDCCHs, and different candidate PDCCHs may overlap each other. In addition, the network side can configure multiple search spaces for the terminal at the same time, so as to detect DCI in different formats or DCI carrying different control information. Since these search spaces may not overlap, they may partially or completely overlap, that is, the candidate PDCCHs constituting different search spaces may overlap each other.

S304, the terminal performs data transmission in the time domain resource scheduled by the DCI.

When the network device performs scheduling of data transmission, the data scheduling on the time interval is avoided, otherwise, the terminal cannot perform filter bandwidth switching (which may introduce interference and increase power consumption), or cannot perform data transmission on the time interval (which affects performance).

Therefore, after receiving the DCI, the terminal performs data transmission in the time domain resource scheduled by the DCI. Wherein the time domain resource does not include the time interval.

S305, the terminal switches the bandwidth of the filter in a time interval.

Further, the terminal may switch the filter bandwidth at the time interval, and other data transmission operations are the same as those of the conventional terminal. The filter comprises a receiving filter and a transmitting filter.

The embodiment provides a design of a time interval between SBFD time units and DL time units (or UL time units) in the SBFD system, which is convenient for the terminal to adjust the bandwidth of the receiving (or transmitting) filter according to the downlink (or uplink) system bandwidths on different types of time units, thereby reducing interference, saving power consumption of the terminal equipment and improving system performance.

According to the communication method provided by the embodiment of the application, for SBFD systems, a certain time interval is required for data transmission on sub-bands with different bandwidths, and when a terminal and network equipment schedule time domain resources to carry out data transmission by determining the time interval, the time domain resources do not comprise the time interval, so that the design requirement of the SBFD system can be met, and the communication reliability is improved.

The terminal can switch the receiving bandwidth and the transmitting bandwidth in the time interval, and adopts proper bandwidth to perform signal transmission on SBFD time units, so that interference is reduced, performance is improved, and meanwhile, as data transmission cannot be performed in the switching process, the time domain resource of the data transmission does not comprise the time interval, so that the data transmission is not influenced by the switching process.

For data transmission in the SBFD system described above, implementation of a new scheduling rule is introduced when there are two non-adjacent subbands of the same transmission direction (DL or UL) on the same SBFD slot. As shown in fig. 4b, in the SBFD slots, the uplink subband is located at a middle position in BWP, and then in the SBFD slots, there are two non-adjacent downlink subbands that are the same as the downlink transmission direction: downlink subband 1 and downlink subband 2.

A scheduling rule is: transmissions on the sub-band full duplex time unit are within the same sub-band for the same terminal.

Corresponding to the scheduling rule, there may be several implementations:

one implementation is that two non-adjacent sub-bands with the same transmission direction exist on a sub-band full duplex time unit, one of the two non-adjacent sub-bands is preset by a protocol or configured by a network, and the frequency domain resource of the DCI scheduling comprises part or all of the frequency domain resource of one sub-band. Still referring to fig. 4b, for example, there is a downlink subband 1 and a downlink subband 2 in SBFD slots, and the protocol presets or the network configures the downlink subband 1, the frequency domain resources scheduled by the DCI include part or all of the frequency domain resources of the downlink subband 1.

Another implementation is that there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, and the frequency domain resource of DCI scheduling includes part or all of the frequency domain resource of a target subband, where the target subband is one of the two non-adjacent subbands. In this implementation, the location of the target subband may be relatively flexible.

In one example, the target subband is varied as SBFD slots vary. The variation may be periodic or non-periodic.

As shown in fig. 8a, a schematic diagram of a frequency domain resource for DCI scheduling according to an embodiment of the present application includes two SBFD slots in each resource period. Two resource periods are illustrated. In BWP configured with an uplink subband, the downlink subband above the uplink subband is downlink subband 1, and the downlink subband below the uplink subband is downlink subband 2. In this example, the target subband may be changed in the order of downlink subband 1, downlink subband 2, i.e., corresponding to the first SBFD slots in the first period, within a plurality of resource periods; the target sub-band is downlink sub-band 2 corresponding to the second SBFD slots in the first period; the target sub-band is downlink sub-band 1 corresponding to the first SBFD slots in the second period; the target sub-band is downlink sub-band 2 corresponding to a second SBFD slot in a second period; and so on. In addition, there may be a time interval between the downlink sub-band 1 and the downlink sub-band 2.

The resource allocation shown in fig. 8a may be as a pattern (pattern) preset by a protocol or configured to the terminal by the network device.

As shown in fig. 8b, another schematic diagram of a frequency domain resource for DCI scheduling according to an embodiment of the present application is shown. With respect to fig. 8a, in this figure, the location of the target subband is not strictly changing, but is configured by the network device. For example, the network device sends an indication message, where the indication message includes 1 bit, and when the value of the 1 bit is "0", it indicates that the target subband is downlink subband 1; when the 1 bit is "1", the target subband is downlink subband 2.

In another example, the target subband is varied in consecutive SBFD slots.

As shown in fig. 8c, in another embodiment of the present application, a frequency domain resource scheduled by DCI is shown, where consecutive SBFD slots are used as a unit, where the position of a target subband in the unit (i.e., in the same unit) is unchanged, and the position of the target subband may change between units (i.e., in different units). As shown, in the first resource period, the first two consecutive SBFD slots are transmitted in the downlink subband 1, i.e., the target subband is the downlink subband 1; in the second resource period, the second segment of consecutive two SBFD slots is transmitted in downlink subband 2, i.e., the target subband is downlink subband 2.

The resource allocation shown in fig. 8c may be used as a pattern preset by a protocol or configured to the terminal by the network device.

It will be appreciated that, for the transmission dynamically scheduled by the network device in step S303, the network device may be scheduled so as to be located in the target subband.

For transmission of RRC signaling or other higher layer signaling configuration by the network device, the scheduling of the network device may be such that it is located within the target subband; or the configuration of the network device may not be limited, that is, the periodic transmission resources configured by the network device through RRC signaling or other higher layer signaling may be located in the non-target sub-band, and the terminal only performs transmission in the target sub-band, and does not perform transmission in the non-target sub-band, or the terminal device does not use the transmission resources configured by the network device in the non-target sub-band.

Another scheduling rule is: two scheduling rules (or scheduling actions) may be defined: the first scheduling rule is a transmission across two subbands and the second scheduling rule is a transmission within one of two non-adjacent subbands. One of the scheduling rules may be set as a default schedule, and the other scheduling rule as a non-default schedule.

Corresponding to the scheduling rule, there may be several implementations:

In one implementation, when the default scheduling rule is a first scheduling rule and the DCI schedules the time domain resource according to a second scheduling rule, a time interval between a location where the DCI is located and a location of the time domain resource scheduled by the DCI is greater than a first time threshold, where the first time threshold is a positive number. The length of the first time threshold may be preset by a protocol, and may be different from the length according to the capability information of the terminal. For example, the location of the DCI may be the last symbol of the time domain resource of the DCI or the first symbol of the time domain resource of the DCI. Illustratively, the location of the time domain resource scheduled by the DCI may be the last symbol of the time domain resource scheduled by the DCI or the first symbol of the time domain resource scheduled by the DCI. As shown in fig. 9, in the transmission scheduling diagram in SBFD system provided by the embodiment of the present application, since the terminal receives DCI for blind detection in the search space set, the terminal blindly detects DCI across two subbands. And the PDSCH/PUSCH of the DCI schedule is transmitted in one of the subbands. For this case, the time interval between the last symbol where the DCI is located and the first symbol of the time domain resource (i.e., the time domain resource corresponding to PDSCH/PUSCH) scheduled by the DCI is greater than the first time threshold, so that the terminal can switch the bandwidth size of the filter.

In another implementation, when the default scheduling rule is a second scheduling rule and the DCI schedules the time-domain resource according to the first scheduling rule, a time interval between a location where the DCI is located and a location of the time-domain resource scheduled by the DCI is greater than a second time threshold, where the second time threshold is a positive number. For example, the location of the DCI may be the last symbol of the time domain resource of the DCI or the first symbol of the time domain resource of the DCI. Illustratively, the location of the time domain resource scheduled by the DCI may be the last symbol of the time domain resource scheduled by the DCI or the first symbol of the time domain resource scheduled by the DCI. The length of the second time threshold may be preset by a protocol, and may be different from the length according to the capability information of the terminal. If the network device is transmitting DCI in one of the sub-bands, the terminal correspondingly receives the DCI in that one of the sub-bands. While PDSCH/PUSCH for DCI scheduling is cross-subband. For this case, the time interval between the location of the DCI and the location of the time domain resource (i.e., the time domain resource corresponding to PDSCH/PUSCH) scheduled by the DCI is greater than the second time threshold, so that the terminal can reach the bandwidth size of the handover filter. For example, the second time threshold is greater between the end symbol of the DCI and the start symbol of the PDSCH/PUSCH.

In yet another implementation, the first DCI schedules transmission of first data according to a first scheduling rule and the second DCI schedules transmission of second data according to a second scheduling rule, a time interval between a transmission location of the first data and a transmission location of the second data being greater than a third time threshold, the third time threshold being a positive number. The transmission position of the first data may be, for example, the last symbol of the time domain resource where the first data is located, or the first symbol of the time domain resource where the first data is located. The transmission location of the second data may be, for example, the last symbol of the time domain resource where the second data is located, or the first symbol of the time domain resource where the second data is located. The length of the third time threshold may be preset by a protocol, and may be different from the length according to the capability information of the terminal. As shown in fig. 10, in another embodiment of the present application, transmission scheduling diagram in SBFD systems is provided, transmission 1 is a cross-subband transmission, transmission 2 is an intra-subband transmission, and a transmission position of transmission 1 and a transmission position of transmission 2 are greater than a third time threshold, so that a terminal can switch a bandwidth size of a filter conveniently. Transmission 3 is an intra-subband transmission and transmission 4 is a transmission on a DL slot (equivalent to a cross-subband transmission), with the transmission position of transmission 3 and the transmission position of transmission 4 being greater than a third time threshold, so that the terminal can switch the bandwidth size of the filter. The time between the end symbol of the transmission position temporally preceding and the start symbol of the transmission position temporally succeeding is, for example, greater than a third time threshold.

In still another implementation, assuming that the DCI according to step S303 above performs data transmission in two non-adjacent subbands, the terminal may start a timer. The count unit of the timer may be an OFDM symbol, a slot, for example. The timer may be started when data transmission starts, or may be started when data transmission ends. The duration of the timer may be determined empirically or in other manners, or a network device may select a value from a plurality of alternative value sets preset by the protocol and configure the value to the terminal device. During timer running, if the DCI does not schedule a new data transmission, where the new data refers to different data than the data starting the timer, e.g., the data transmission starting the timer is a transmission of transport block 1, then the new data transmission refers to a data transmission of transport block 2, where data block 1 and data block 2 are different data blocks. When the timer is stopped, the terminal monitors data in one of the two non-adjacent subbands, i.e. the terminal adopts a smaller filter bandwidth, which is beneficial to saving the power consumption of the terminal.

In yet another implementation, the frequency domain resource for data transmission scheduled by DCI in SBFD slots includes a number of subbands associated with a number of subbands corresponding to a set of search spaces in which the DCI is located. For example, assuming that the number of subbands corresponding to the search space set in which the DCI is located is two non-adjacent subbands, the frequency domain resources scheduled by the DCI for data transmission in SBFD slots include two non-adjacent subbands. For another example, assuming that the number of subbands corresponding to the search space set in which the DCI is located is one of two non-adjacent subbands, the frequency domain resource scheduled by the DCI for data transmission in the SBFD slots includes a subband also being one of the two non-adjacent subbands. This can simplify the setup of the communication system.

Still another implementation is that the frequency domain resources for data transmission scheduled by the DCI in SBFD slots include a number of subbands that is associated with a number of subbands corresponding to a set of control resources (control resource set, CORESET) in which the DCI is located. For example, assuming that the number of subbands corresponding to the control resource set in which the DCI is located is two non-adjacent subbands, the frequency domain resources scheduled by the DCI in SBFD slots for data transmission include two non-adjacent subbands. For another example, assuming that the number of subbands corresponding to the control resource set in which the DCI is located is one of two non-adjacent subbands, the frequency domain resource scheduled by the DCI in the SBFD slots for data transmission includes a subband also being one of the two non-adjacent subbands. This can simplify the setup of the communication system.

In general, the scheduling rules are given above when two non-adjacent subbands in the same transmission direction (DL or UL) exist on the same SBFD time unit, so that the terminal can determine the scheduling rules according to the rules and select the adaptive filter bandwidth, thereby reducing interference, saving power consumption of the terminal, and improving system performance.

It will be appreciated that, in order to implement the functions in the above embodiments, the network device and the terminal include corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and method steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application scenario and design constraints imposed on the solution.

Fig. 11 and 12 are schematic structural diagrams of a possible communication device according to an embodiment of the present application. These communication devices may be used to implement the functions of the terminal or the network device in the above method embodiments, so that the beneficial effects of the above method embodiments may also be implemented. In an embodiment of the present application, the communication device may be one of the terminals 120a-120j shown in fig. 1, or may be the network device 110a or 110b shown in fig. 1, or may be a module (e.g. a chip) applied to the terminal or the network device.

As shown in fig. 11, the communication apparatus 1100 includes a processing unit 1110 and a transceiving unit 1120. The communication device 1100 is configured to implement the functions of the terminal or network device in the method embodiment shown in fig. 3.

When the communication device 1100 is used to implement the functionality of a terminal in the method embodiment shown in fig. 3: the transceiver unit 1120 is configured to perform operations performed by the terminal in steps S301 and S303 in the embodiment shown in fig. 3; the processing unit 1110 is configured to perform steps S302b, S304, and S305 in the embodiment shown in fig. 3.

When the communication apparatus 1100 is used to implement the functionality of the network device in the method embodiment shown in fig. 3: the transceiver unit 1120 is configured to perform operations performed by the network device in steps S301 and S303 in the embodiment shown in fig. 3; the processing unit 1110 is configured to perform step S302a in the embodiment shown in fig. 3.

The above-mentioned more detailed descriptions of the processing unit 1110 and the transceiver unit 1120 may be directly obtained by referring to the related descriptions in the method embodiment shown in fig. 3, which are not repeated herein.

As shown in fig. 12, the communication device 1200 includes a processor 1210 and an interface circuit 1220. Processor 1210 and interface circuit 1220 are coupled to each other. It is understood that the interface circuit 1220 may be a transceiver or an input-output interface. Optionally, the communication device 1200 may further include a memory 1230 for storing instructions to be executed by the processor 1210 or for storing input data required by the processor 1210 to execute instructions or for storing data generated after the processor 1210 executes instructions.

When the communication device 1200 is used to implement the method shown in fig. 3, the processor 1210 is used to implement the functions of the processing unit 1110, and the interface circuit 1220 is used to implement the functions of the transceiver unit 1120.

When the communication device is a chip applied to the terminal, the terminal chip realizes the functions of the terminal in the embodiment of the method. The terminal chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal, and the information is sent to the terminal by the network equipment; or the terminal chip sends information to other modules in the terminal (such as a radio frequency module or an antenna), which the terminal sends to the network device.

When the communication device is a chip applied to the network equipment, the network equipment chip realizes the functions of the network equipment in the embodiment of the method. The network device chip receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent to the network device by the terminal; or the network device chip sends information to other modules in the network device (such as a radio frequency module or an antenna), which is sent by the network device to the terminal.

It is to be appreciated that the Processor in embodiments of the application may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application Specific Integrated Circuits (ASICs), field programmable gate arrays (Field Programmable GATE ARRAY, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general purpose processor may be a microprocessor, but in the alternative, it may be any conventional processor.

The method steps in the embodiments of the present application may be implemented by hardware, or may be implemented by executing software instructions by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access memory, flash memory, read only memory, programmable read only memory, erasable programmable read only memory, electrically erasable programmable read only memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a network device or terminal device. The processor and the storage medium may reside as discrete components in a network device or terminal device.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, 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 programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user device, or other programmable apparatus. The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, e.g., floppy disk, hard disk, tape; but also optical media such as digital video discs; but also semiconductor media such as solid state disks.

In various embodiments of the application, where no special description or logic conflict exists, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments based on their inherent logic.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. In the text description of the present application, the character "/", generally indicates that the associated objects are an or relationship; in the formula of the present application, the character "/" indicates that the front and rear associated objects are a "division" relationship.

It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application. The sequence number of each process does not mean the sequence of the execution sequence, and the execution sequence of each process should be determined according to the function and the internal logic.

Claims

1. A method of communication, the method comprising:

Determining a time interval;

Receiving downlink control information DCI;

performing data transmission in the time domain resource scheduled by the DCI, wherein the time domain resource does not comprise the time interval;

wherein the location of the time interval comprises at least one of:

The time interval is located within a sub-band full duplex time unit;

The time interval is positioned in an uplink time unit;

The time interval is located in the downlink time unit;

The time interval is located in a time unit before the first time;

the time interval is located in a time unit after the first time;

The first time is a boundary between the downlink time unit and a sub-band full duplex unit adjacent to the downlink time unit, or the first time is a boundary between the uplink time unit and a sub-band full duplex unit adjacent to the uplink time unit.

2. The method according to claim 1, wherein the method further comprises:

the bandwidth size of the filter is switched over the time interval.

3. The method according to claim 1 or 2, wherein the determining the time interval comprises:

Receiving a time division duplex parameter and a sub-band full duplex parameter;

Determining the time interval according to the time division duplex parameter and the sub-band full duplex parameter;

Wherein the time division duplex parameter comprises at least one of the following parameters: the method comprises the steps of a time slot index of a downlink time slot, a time slot index of an uplink time slot and a time slot index of a flexible time slot, wherein at least one symbol of an uplink symbol, a downlink symbol and a flexible symbol in the flexible time slot is a symbol index;

the sub-band full duplex parameters include at least one of the following: sub-band full duplex time cell index, sub-band position in sub-band full duplex time cell.

4. A method according to any of claims 1-3, characterized in that the position of the time interval is protocol preset.

5. A method according to any one of claims 1-3, characterized in that the method further comprises:

First information is received, the first information including a location of the time interval.

6. The method according to any one of claims 1-5, further comprising:

Capability information is transmitted, the capability information including indication information supporting a capability to configure the time interval in a sub-band full duplex system.

7. The method of claim 6, wherein the capability information further comprises a minimum length of the time interval; or (b)

The length of the time interval is preset by a protocol.

8. The method according to any of claims 1-7, wherein one or more symbols of the sub-band full duplex time unit are symbols for performing interference and/or channel quality measurements, the time interval being before the symbols for performing interference and/or channel quality measurements.

9. The method according to any of claims 1-8, wherein there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, one of the two non-adjacent subbands is protocol preset or network configured, and the frequency domain resources of the DCI schedule include part or all of the frequency domain resources of the one subband.

10. The method according to any one of claims 1-8, wherein there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, and the DCI scheduled frequency domain resources include part or all of the frequency domain resources of a target subband, which is one of the two non-adjacent subbands;

wherein the target subband is a function of subband full duplex time unit variation; or (b)

The target subband is varied in units of consecutive subband full duplex time units.

11. The method according to any one of claims 1-10, characterized in that:

When the default scheduling rule is a first scheduling rule and the DCI schedules time domain resources according to a second scheduling rule, the position of the DCI and the position of the time domain resources scheduled by the DCI are greater than a first time threshold, and the first time threshold is a positive number; and/or

When the default scheduling rule is the second scheduling rule and the DCI schedules time domain resources according to the first scheduling rule, the position of the DCI and the position of the time domain resources scheduled by the DCI are greater than a second time threshold, and the second time threshold is a positive number; and/or

The first DCI schedules transmission of first data according to the first scheduling rule, and the second DCI schedules transmission of second data according to the second scheduling rule, wherein a time between a transmission position of the first data and a transmission position of the second data is larger than a third time threshold, and the third time threshold is a positive number;

Wherein the first scheduling rule is a transmission spanning two subbands and the second scheduling rule is a transmission within one of two non-adjacent subbands.

12. The method according to any one of claims 1-11, wherein there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, the DCI scheduled frequency domain resource including the two non-adjacent subbands, the method further comprising:

performing data transmission in the two non-adjacent sub-bands according to the DCI, and starting a timer;

and if no new data transmission exists during the running period of the timer, monitoring data in one of the two non-adjacent sub-bands when the timer is stopped.

13. The method of any of claims 1-12, wherein the frequency domain resources scheduled by the DCI for data transmission within the sub-band full-duplex time unit include a number of sub-bands associated with a number of sub-bands corresponding to a set of search spaces in which the DCI is located.

14. A method of communication, the method comprising:

Determining a time interval;

transmitting downlink control information DCI;

wherein the location of the time interval comprises at least one of:

The time interval is located within a sub-band full duplex time unit;

The time interval is positioned in an uplink time unit;

The time interval is located in the downlink time unit;

The time interval is located in a time unit before the first time;

the time interval is located in a time unit after the first time;

15. The method of claim 14, wherein the determining the time interval comprises:

Transmitting the time division duplex parameter and the sub-band full duplex parameter;

16. A method according to claim 14 or 15, wherein the position of the time interval is protocol preset.

17. The method according to claim 14 or 15, characterized in that the method further comprises:

and transmitting first information, wherein the first information comprises the position of the time interval.

18. The method according to any one of claims 14-17, further comprising:

Capability information is received, the capability information including indication information supporting a capability to configure the time interval in a sub-band full duplex system.

19. The method of claim 18, wherein the capability information further comprises a minimum length of the time interval; or (b)

The length of the time interval is preset by a protocol.

20. The method according to any of claims 14-19, wherein one or more symbols of the sub-band full duplex time unit are symbols for performing interference and/or channel quality measurements, the time interval being before the symbols for performing interference and/or channel quality measurements.

21. The method according to any of claims 14-20, wherein there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, one of the two non-adjacent subbands is protocol preset or network configured, and the frequency domain resources of the DCI schedule include part or all of the frequency domain resources of the one subband.

22. The method according to any one of claims 14-21, wherein there are two non-adjacent subbands with the same transmission direction on the subband full duplex time unit, and the DCI scheduled frequency domain resources include part or all of the frequency domain resources of a target subband, which is one of the two non-adjacent subbands;

23. The method according to any one of claims 14-22, wherein:

24. The method of any of claims 14-23, wherein the frequency domain resources scheduled by the DCI for data transmission within the sub-band full-duplex time unit include a number of sub-bands associated with a number of sub-bands corresponding to a set of search spaces in which the DCI is located.

25. A communication device comprising means for performing the method of any of claims 1-24.

26. A communication device comprising a processor and interface circuitry for receiving signals from other communication devices than the communication device and transmitting signals from the processor to the processor or sending signals from the processor to other communication devices than the communication device, the processor being configured to implement the method of any of claims 1-24 by logic circuitry or executing code instructions.

27. A computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the method according to any of claims 1-24.