CN111435884B - Frame format configuration method and device - Google Patents

Abstract

The application provides a configuration method and a device of a frame format, wherein the method comprises the following steps: the method comprises the steps that terminal equipment receives first configuration information sent by a base station, wherein the first configuration information is used for indicating the sending opportunity of Channel Occupation Time (COT) indication information; and the terminal equipment monitors the COT indication information at the sending time of the COT indication information, wherein the COT indication information is used for indicating the COT frame format. The sending time of the COT indication information configured for the terminal equipment by the base station can avoid the missed detection of the COT indication information by the terminal equipment caused by signal interference or poor channel quality, and simultaneously, the power consumption of the terminal equipment for detecting the COT indication information can be saved.

Description

Frame format configuration method and device

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for configuring a frame format.

Background

With the development of enhanced mobile broadband (eMBB) services, users have increasingly demanded wireless network bandwidth and throughput. In order to better utilize unlicensed spectrum resources and provide higher service rate and better user experience for terminal users, an unlicensed (un-licensed) access technology is introduced in Long Term Evolution (LTE) and New Radio (NR) systems.

In the system design of LTE-U and NR-U, a transmitter acquires a transmission opportunity through Listen Before Talk (LBT), the transmitter has two dimensions of a frequency domain and a time domain, a bandwidth of the frequency domain corresponds to a bandwidth of the LBT, and an acquired transmission time length is called a Channel Occupancy Time (COT). The length of COT in the current standard is divided into 2ms, 3ms, 4ms, 6ms, 8ms and 10 ms. Outside the COT time length, the sending node must finish sending and make LBT again, so as to obtain a new sending opportunity.

In the prior art, a COT frame structure can adopt a semi-static frame structure configured based on high-level signaling, because the COT is acquired based on an LBT result, the starting position and the ending position are difficult to determine in advance, and the base station cannot send data or symbol information if an uplink symbol is encountered by adopting the semi-static COT frame structure. I.e. no timely and effective communication with the UE is possible. Another method is to send a wake-up signal at the start position of the COT, and place COT indication information or Slot Format Indication (SFI) information after the wake-up signal. However, if the User Equipment (UE) fails to detect the wake-up signal, the COT indication information is also failed to detect, and thus the entire transmission information of the COT is failed to detect.

Disclosure of Invention

The application provides a configuration method and a configuration device of a frame format, which can avoid missed detection of COT indication information by terminal equipment.

In a first aspect, a method for configuring a frame format is provided, including: the method comprises the steps that terminal equipment receives first configuration information sent by a base station, wherein the first configuration information is used for indicating the sending opportunity of Channel Occupation Time (COT) indication information; and the terminal equipment monitors the COT indication information at the sending time of the COT indication information, wherein the COT indication information is used for indicating the COT frame format.

The base station indicates the sending time of the COT indication information to the terminal equipment, so that the terminal equipment can monitor the COT indication information at the indicated sending time, and the missed detection of the COT indication information caused by signal interference or poor channel quality can be avoided.

Optionally, the COT indication information may include a length of the COT, that is, a total COT length or a remaining COT length, where the total COT length refers to a time length from a start of the COT to an end of the COT; the remaining COT length refers to a length of time from a position of the current COT indication information to a COT end.

Optionally, the COT indication information may further include a configuration period of a slot format, that is, uplink and downlink allocations in each slot.

Optionally, the COT indication information may include information of a current channel transmission time. The COT indication information may also be COT initial information or Frame Based Equipment (FBE) information, and the application is not limited thereto.

Optionally, the COT indication information may further include paging location information and/or random access configuration information and/or frame format information of a next COT, and the like.

With reference to the first aspect, in a possible implementation manner, the first configuration information includes: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

Optionally, the transmission offset of the COT indication information refers to an offset time of the first COT indication occasion relative to the timeslot 0 in the whole frame format.

With reference to the first aspect, in a possible implementation manner, the method further includes: and the terminal equipment determines a first preset frame format, wherein the terminal equipment uses the first preset frame format before the sending opportunity of the COT indication information.

The terminal equipment uses the first preset frame format before the sending time of the COT indication information, so that other data can be transmitted before the sending time of the COT indication information, the terminal equipment can reasonably utilize resources, and waste of the resources is avoided.

With reference to the first aspect, in a possible implementation manner, the determining, by the terminal device, a first preset frame format includes: intercepting part of time slots of a second preset frame format or circularly using the time slots of the second preset frame format to determine the first preset frame format.

With reference to the first aspect, in a possible implementation manner, the method further includes: and the terminal equipment receives second configuration information sent by the base station, wherein the second configuration information is used for indicating the second preset frame format.

The terminal device may select a suitable frame format for data transmission according to a requirement of the terminal device for data transmission before the COT indication information is not detected by intercepting a part of the time slots of the second preset frame format or recycling the time slots of the second preset frame format.

With reference to the first aspect, in a possible implementation manner, the method further includes: the terminal equipment monitors an activation signal sent by the base station, wherein the activation signal is used for indicating the terminal equipment to switch to a working mode; wherein the terminal device uses the first preset frame format after the activation signal and before a transmission timing of the COT indication information.

The base station sends the activation signal to the terminal equipment, so that the terminal equipment can switch the working state, and the efficiency of transmitting data to the terminal equipment by the base station can be improved.

With reference to the first aspect, in a possible implementation manner, the resource that carries the COT indication information includes a core physical resource block PRB group that carries the COT indication information, where the core PRB group includes N consecutive PRBs.

Optionally, the base station may divide the bandwidth into M PRB groups within the bandwidth defined by the network, where the resource carrying the COT indication information may be P core PRB groups configured by the base station, and M is greater than or equal to P is greater than or equal to 1.

The terminal equipment monitors COT indication information on P core PRB groups configured by the base station, so that the blind detection amount of the terminal equipment can be reduced.

In a second aspect, a method for configuring a frame format is provided, including: a base station sends configuration information to terminal equipment, wherein the configuration information is used for indicating the sending opportunity of COT (channel occupancy time) indication information; and the base station sends the COT indication information to the terminal equipment at the sending time of the COT indication information, wherein the COT indication information is used for indicating the COT frame format.

The sending time of the COT indication information is configured through the base station, so that the interference between adjacent cells is avoided.

With reference to the second aspect, in a possible implementation manner, the first configuration information includes: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

With reference to the second aspect, in a possible implementation manner, the method further includes: and the base station sends second configuration information to the terminal equipment, wherein the second configuration information is used for indicating the second preset frame format.

Through the second preset frame format appointed by the base station to the terminal equipment, the base station and the terminal equipment can transmit data in the time slot of the second preset frame format, so that time-frequency resources can be reasonably utilized.

With reference to the second aspect, in a possible implementation manner, the method further includes: and the base station sends an activation signal to the terminal equipment, wherein the activation signal is used for indicating the terminal equipment to be switched to a working mode.

The base station sends an activation signal to the terminal equipment, so that the terminal equipment is switched to a working mode, and the data transmission efficiency is improved.

Optionally, the physical parameter design of the activation signal is different from the parameter design of the COT indicator information signal transmitted through the physical channel or the signal transmitted by other physical signals. For example, the SCS of the activation signal may be 312.5KHz, or 480KHz, or 240KHz, while the COT indicates that the SCS of the information signal is 120KHz, or 60KHz, or 30KHz, or 15 KHz. The physical channel includes a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH) and/or other physical channels, which is not limited in this application.

Optionally, the activation signal may also include COT indication information; namely, the activation signal includes: signal detection sequence, COT duration, frame format indication information, and/or cell identification signal. The signal detection sequence is used for indicating the start of signal transmission or indicating the UE to enter an operating mode, the COT duration represents the length information of the channel occupation time, and the frame format indicates the attribute of part or all of the time slots/symbols (for example, uplink symbols, downlink symbols, flexible symbols, or uncertain signals) in the channel occupation time.

The parameters and format of the activation signal can be the same as those of a preamble (preamble) of an 802.11 series, and after the COT indication information is added into the activation signal, better coexistence of NR-U and WIFI can be realized, and unnecessary interference and power consumption are reduced.

With reference to the second aspect, in a possible implementation manner, the resource carrying the COT indication information includes a core physical resource block PRB group carrying the COT indication information, where the core PRB group includes N consecutive PRBs.

The base station configures P core PRB groups for transmitting COT indication information to the terminal equipment, so that blind detection amount of the terminal equipment can be reduced.

In a third aspect, a communication apparatus is provided, including: a receiving module, configured to receive first configuration information sent by a base station, where the first configuration information is used to indicate a sending opportunity of a channel occupancy time COT indication information; the receiving module is further configured to monitor the COT indication information at a sending time of the COT indication information, where the COT indication information is used to indicate a COT frame format. With reference to the third aspect, in a possible implementation manner, the first configuration information includes: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

With reference to the third aspect, in a possible implementation manner, the communication apparatus further includes: a determining module, configured to determine a first preset frame format, where the determining module uses the first preset frame format before a sending opportunity of the COT indication information.

With reference to the third aspect, in a possible implementation manner, the communication apparatus further includes: and the processing module is used for intercepting part of time slots of a second preset frame format or circularly using the time slots of the second preset frame format so as to determine the first preset frame format.

With reference to the third aspect, in a possible implementation manner, the receiving module is further configured to receive second configuration information sent by the base station, where the second configuration information is used to indicate the second preset frame format.

With reference to the third aspect, in a possible implementation manner, the receiving module is configured to monitor an activation signal sent by the base station, where the activation signal is used to instruct the terminal device to switch to an operating mode; wherein the terminal device uses the first preset frame format after the activation signal and before a transmission timing of the COT indication information.

With reference to the third aspect, in a possible implementation manner, the resource carrying the COT indication information includes a core physical resource block PRB group carrying the COT indication information, where the core PRB group includes N consecutive PRBs.

In a fourth aspect, a communication apparatus is provided, including: a sending module, configured to send configuration information to a terminal device, where the configuration information is used to indicate a sending opportunity of a channel occupancy time COT indication information; the sending module is further configured to send the COT indication information to the terminal device at a sending time of the COT indication information, where the COT indication information is used to indicate a COT frame format.

With reference to the fourth aspect, in a possible implementation manner, the first configuration information includes: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

With reference to the fourth aspect, in a possible implementation manner, the sending module is further configured to send second configuration information to the terminal device, where the second configuration information is used to indicate the second preset frame format.

With reference to the fourth aspect, in a possible implementation manner, the sending module is further configured to send an activation signal to the terminal device, where the activation signal is used to instruct the terminal device to switch to the working mode.

With reference to the fourth aspect, in a possible implementation manner, the resource carrying the COT indication information includes a core physical resource block PRB group carrying the COT indication information, where the core PRB group includes N consecutive PRBs.

In a fifth aspect, a terminal is provided, which comprises means for performing the method described in any one of the possible implementation manners of the first aspect.

A sixth aspect provides a base station comprising means for performing the method of any of the possible implementations of the second aspect.

In a seventh aspect, there is provided a computer program storage medium having program instructions which, when executed directly or indirectly, cause functions of the method of any one of the possible implementations of the first or second aspect to be implemented on any one of the following devices: the base station and the terminal equipment.

In an eighth aspect, a chip system is provided, where the chip system includes at least one processor, and when a program instruction is executed in the at least one processor, the program instruction causes a function in any one of the following apparatuses in a method according to any one of the foregoing possible implementations of the first aspect or the second aspect to be implemented: the base station and the terminal equipment.

In a ninth aspect, a communication system is provided, which includes: a communications device for performing the method of any one of the possible implementations of the first or second aspect.

Drawings

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

Fig. 2 is a diagram of a typical frame format of a LET.

Fig. 3 is a schematic diagram of a frame format with a subcarrier spacing of 60 KHz.

FIG. 4 is a diagram of COT with subcarrier spacing of 15 KHz.

Fig. 5 is a diagram of COT with a subcarrier spacing of 60 KHz.

Fig. 6 is a diagram of a COT frame structure indication.

Fig. 7 is a structural diagram of a static/semi-static frame format configured by high-layer signaling.

Fig. 8 is a structural diagram of a dynamic frame format based on COT indication information.

Fig. 9 is a schematic flowchart of a configuration method of a frame format according to an embodiment of the present application.

Fig. 10 is a schematic diagram of a COT frame format according to an embodiment of the present application.

Fig. 11 is a schematic flowchart of another configuration method of a frame format according to an embodiment of the present application.

Fig. 12 is a schematic diagram of a frame format according to an embodiment of the present application.

Fig. 13 is a schematic diagram of uplink and downlink allocations on a 2 nd timeslot in a frame format according to an embodiment of the present application.

Fig. 14 is a schematic structural diagram of another frame format according to an embodiment of the present application.

Fig. 15 is a schematic structural diagram of another frame format according to an embodiment of the present application.

Fig. 16 is a schematic diagram of uplink and downlink configuration of a 1 st timeslot in a frame format according to an embodiment of the present application.

Fig. 17 is a schematic diagram of uplink and downlink ratios of 2 nd and 3 rd time slots in a frame format according to an embodiment of the present application.

Fig. 18 is a schematic diagram of another COT frame format according to an embodiment of the present application.

Fig. 19 is a schematic diagram of dynamic and periodic COT indication information provided in an embodiment of the present application.

Fig. 20 is a schematic diagram of a PRB grouping according to an embodiment of the present application.

Fig. 21 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Fig. 22 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.

For the understanding of the embodiments of the present application, a communication system suitable for the embodiments of the present application will be described in detail with reference to fig. 1. A schematic diagram of a communication system 100 suitable for use in embodiments of the present application is shown in fig. 1. As shown, the communication system 100 may include at least one network device, such as a base station (gNB) in the 5G system shown in fig. 1; the communication system 100 may further include at least one terminal device, such as User Equipment (UE) 1 to UE5 shown in fig. 1. By way of example and not limitation, in the embodiments of the present application, the network device and the terminal device may communicate with each other through radio waves, and may also communicate through visible light, laser, infrared, optical quantum, power line, optical fiber, coaxial cable, copper stranded wire, and the like. For example, the network device may send configuration information to the terminal device, and the terminal device may send uplink data to the network device based on the configuration information; for another example, the network device may send downlink data to the terminal device. Thus, the gNB and the UE in fig. 1 may constitute one communication system.

It should be understood that the network device in the communication system may be any device having a wireless transceiving function. The network devices include, but are not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (e.g., home evolved NodeB or home Node B, HNB), baseband Unit (BBU), Access Point (AP) in wireless fidelity (WiFi) system, wireless relay Node, wireless backhaul Node, Transmission Point (TP) or Transmission and Reception Point (TRP), etc., and may also be 5G, such as NR, gbb in the system, or transmission point (TRP or TP), one or a group of base stations in the 5G system may also include multiple antennas, or panels, and may also be configured as network panels or NB, such as a baseband unit (BBU), or a Distributed Unit (DU), etc.

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

It should also be understood that terminal equipment in the wireless communication system may also be referred to as User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios.

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

Fig. 2 is a typical frame structure of LTE. As shown in fig. 2, in the LTE system, the frame structure is based on a fixed frame length. A subcarrier space (SCS) of one radio frame is 15KHz and includes 10 subframes (one-subframe). The 1 subframe includes 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, which are 1ms long. One subframe comprises 2 slots (slots) belonging to one scheduling period, i.e. the start of data can only start at the boundary of a subframe (sub-frame). The number of the time slots is numbered from 0, i.e. the first time slot, numbered 0, the second time slot, the twentieth time slot, numbered 1 …, numbered 19.

In NR systems, the frame structure is also based on a fixed frame length, but the SCS of the frame structure is configurable. For example, SCS can be 15KHz, or 30KHz, 60KHz or 120 KHz. The corresponding symbol lengths of the subcarriers with different intervals may be different. Each slot includes 14 OFDM symbols and the scheduling period of the frame structure is based on the slot. For example, fig. 3 shows a frame structure with 1 SCS of 60KHz, and the scheduling units of the frame structure are time slots.

As shown in fig. 3, 1 radio frame of 10ms includes 10 subframes. One subframe is 1 ms. One subframe includes 4 slots. One slot is 0.25ms, and one slot includes 14 OFDM symbols. The 10 time slots are also numbered from 0, i.e. the first time slot is numbered 0, the second time slot is numbered 1 … and the tenth time slot is numbered 9. The 14 OFDM symbols are also numbered starting from 0, i.e. the first symbol, numbered 0, the second symbol, numbered 1 …, the fourteenth symbol, numbered 13.

In the system design of LTE-U and NR-U, transmission opportunities are acquired through LBT. The transmitter has two dimensions, frequency and time. The frequency domain bandwidth of the sending opportunity corresponds to the bandwidth of the LBT, and the obtained sending time length is called COT. The currently defined COT has lengths of 2ms, 3ms, 4ms, 6ms, 8ms, and 10ms, respectively. Outside the COT time length, the transmitting node must finish transmitting and perform LBT again to obtain a new transmission opportunity.

FIG. 4 shows COT with SCS of 15 KHz. As shown in the example of fig. 4, the base station performs LBT on symbols 0, 1, and 2 of subframe 0 and subframe 1, and successfully acquires COT1 of the transmission channel on symbol 2 of subframe 1 for 8 ms. The COT1 ends at the end of subframe 8. The base station regains 8ms of COT2 at the end of subframe 11. The COT2 ends at the end of subframe 19. Wherein, 1 subframe includes 1 slot, and 1 slot includes 14 symbols.

FIG. 5 is a COT diagram with SCS of 60 KHz. As shown in the example of fig. 5, the base station performs LBT on subframe 0, and acquires COT1 of the transmission channel at the end of subframe 0 for 8 ms. The COT1 includes 8 subframes, ending at the end of subframe 8. The base station regains a COT2 of 6ms at the end of subframe 11, which includes 6 subframes. The COT2 ends at the end of subframe 17. Where 1 subframe includes 4 slots and 1 slot includes 14 symbols.

Fig. 6 is a diagram of a COT frame structure indication. After the base station obtains the COT, it needs to determine a frame structure, that is, a set of downlink symbols (sent to the UE by the base station) and a set of uplink symbols.

As shown in fig. 6, the base station performs LBT on symbols 0, 1, and 2 of subframe 0 and subframe 1, and successfully acquires COT1 of the transmission channel on symbol 2 of subframe 1 for 8 ms. The COT1 ends at the end of subframe 8. The base station regains the COT2 of 8ms at the end of subframe 11, which COT2 ends at the end of subframe 19. Wherein, 1 subframe includes 1 slot, and 1 slot includes 14 symbols.

In fig. 6, the base station successfully acquires COT1 of the transmission channel on symbol 2 of subframe 1, so that the frame structure of COT1 can be determined, that is, it can be determined that COT1 is downlink symbols from symbol 2 of subframe 1 to the end of subframe 6, that is, at this time, only the base station can transmit data or symbol information to the user equipment; COT1 is uplink symbols from the beginning of subframe 7 to the end of subframe 8, i.e. only the ue can send data or symbol information to the base station. The base station successfully acquires COT2 at the end of the subframe 11, so that the frame structure of COT2 can be determined, that is, it can be determined that COT2 is downlink symbols from the beginning of subframe 12 to the end of subframe 15 and on subframe 18, that is, at this time, only the base station can send data or symbol information to the user equipment; COT2 is uplink symbols from the beginning of subframe 16 to the end of subframe 17 and on subframe 19, that is, only the ue can transmit data or symbol information to the base station.

It should be understood that the frame structure can be understood as two dimensions:

first, a time length unit. I.e. a length of 1 radio frame (e.g. 10ms), 1 radio frame comprising the number of subframes (e.g. 10), a length of 1 subframe (e.g. 1ms), 1 subframe comprising the number of slots (e.g. 1, 2, 4, 8, 16, subcarrier-dependent spacing), 1 slot comprising the number of symbols (e.g. 14).

Second, symbolic attributes. The process of determining the symbol attribute may be referred to as slot allocation, or uplink and downlink allocation, or as slot format. Through the configuration of the symbol attributes, whether the OFDM symbol belongs to an uplink symbol, a downlink symbol, or an F symbol (flexible variable symbol, i.e., uplink or downlink) can be determined.

Generally, in 1 slot/subframe, if all symbols are uplink, it is called uplink slot/subframe, and if all symbols are downlink, it is called downlink slot/subframe. If the uplink and the downlink are included, the time slot/subframe is called a hybrid time slot/subframe, or an uplink and downlink switching time slot/subframe, or a switching time slot/frame.

Currently, static/semi-static configuration frame format configuration is performed based on higher layer messages (e.g., broadcast messages). The static/semi-static configuration frame format configuration is a high-level parameter uplink and downlink common configuration (UL-DL-configuration-common), and is a slot format within a certain period time (for example, the period length is 0.5ms, 1ms, 2ms, 3ms, 4ms, 5ms, 10 ms). The time slot format scheduling content requirements are as follows:

1. the number of continuous downlink time slots (the value range is 0-320);

2. the number of downlink/downlink symbols in the uplink and downlink conversion time slot, and the sum of the uplink and downlink coincidence numbers is not more than 14;

3. the number of continuous uplink time slots (the value range is 0-320).

Fig. 7 is a structural diagram of a static/semi-static frame format configured by high-layer signaling. As shown in fig. 7, DL is a downlink timeslot, UL is an uplink timeslot, and S is an uplink/downlink switching timeslot (i.e., including an uplink, including a downlink, or including a flexible symbol). For a frame with a length of 10ms, the configuration parameters of the frame structure are respectively: the cycle length is 2.5ms, the SCS is 30KHz, the number of continuous downlink time slots is 3, and the number of continuous uplink time slots is 1. The number of the uplink/downlink conversion slots is 1, and in the uplink/downlink conversion slots, the downlink is 10 symbols, the uplink is 0 symbol, and the uplink/downlink is converted into 4 symbols (for example, X symbol in fig. 7).

In LBT, when the static/semi-static frame format is obtained, the COT start position and COT end position are difficult to determine in advance. If a semi-static COT frame format is adopted, in an uplink symbol, the base station cannot send data or symbol information, namely, the base station cannot perform timely and effective communication with the UE. Therefore, the service flexibility is low.

Fig. 8 is a structural diagram of a dynamic frame format based on COT indication information, which is based on a static/semi-static frame format, by adding a wake-up signal at a start position of COT and placing the COT indication information after the wake-up signal. The UE listens for the wake-up signal at any time. If the wake-up signal is monitored at the start position of the COT, the UE detects the COT indication information and acquires the COT frame format information (namely uplink and downlink ratio) according to the COT indication information.

However, in the UE monitoring process, whether the COT indication information can be detected depends on the wake-up signal. It is possible to detect the COT indication information only after the UE listens to the wake-up signal. Therefore, if the UE misses the wake-up signal, the UE may also miss the COT indication information, and the UE cannot know the uplink and downlink ratio of the whole COT frame format, that is, the data transmission process in the COT frame format may also be lost. And for idle state or inactive UE, if want to receive the paging message, need to monitor the wake-up signal and COT indicating information first, and obtain the COT frame format, thus has increased the power consumption of UE.

Therefore, it is highly desirable to provide a method capable of successfully acquiring the COT frame format while satisfying the requirement of flexibility of service, and the following describes the embodiment of the present application in detail with reference to fig. 9.

Fig. 9 is a schematic flow chart of a configuration method 900 of a frame format according to an embodiment of the present application. The method includes steps S910 to S920.

In step S910, the terminal device receives first configuration information sent by the base station, where the first configuration information is used to indicate a sending timing of the information indicating the time occupied by the channel, COT.

Optionally, there may be a plurality of sending timings of the COT indication information, and the number of sending timings of the COT indication information is not limited in the present application.

For example, fig. 10 shows a COT frame format according to an embodiment of the present application. The COT shown in fig. 10 indicates timing 1, COT indicates timing 2, and COT indicates timing 3.

Optionally, the first configuration information may include: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

For example, as shown in fig. 10, the COT indication information period may be 4 slots, that is, COT indication timing 1 is at the start position of slot 0, COT indication timing 2 is at the start position of slot 4, that is, the interval between COT indication timing 1 and COT indication timing 2 is 4 slots; that is, COT-indicating timing 2 is at the start of slot 4, COT-indicating timing 3 is at the start of slot 8, that is, there are 4 slots between COT-indicating timing 2 and COT-indicating timing 3.

For another example, the transmission offset of the COT indication information is an offset time of the first COT indication timing (e.g., COT indication timing 1) with respect to the slot 0 in the entire frame format. For example, in fig. 10, the COT instruction timing 1 is at the start position of the slot 0, that is, the transmission offset of the COT instruction information is 0. For another example, if the COT indication timing 1 is at the beginning of the slot 1, that is, the transmission offset of the COT indication information is 1 slot.

Optionally, the resource carrying the COT indication information may be random, that is, when the UE monitors the COT indication information, blind detection is required, so as to obtain the COT indication information. Optionally, the resource carrying the COT indication information may be 1 dedicated physical resource block configured by the base station. For example, as shown in fig. 20, the base station may divide the bandwidth into M Physical Resource Block (PRB) groups, that is, a PRB group 1, a PRB group 2, and a PRB group 3 … PRB group M, where each PRB group includes N consecutive PRBs, that is, a PRB 1, a PRB 2, a PRB3, and a … PRB group N, and the base station may determine one core PRB group from the M PRB groups, where the core PRB group may be any one of the M PRB groups, that is, the PRB group 1, and may also be a PRB group 5, which is not limited in this embodiment of the present application. The related COT indication information and/or the activation signal may be transmitted through the core PRB group, that is, at a transmitting end (e.g., a base station), the COT indication information and/or the activation signal may be transmitted only when the PRB group LBT corresponding to the core PRB group is successful. At the receiving end (e.g., terminal device), it is accordingly only necessary to detect the COT information and/or activation signal on the core PRB set. Therefore, the blind detection amount of the terminal equipment can be reduced, and the signaling overhead is saved.

Optionally, the resource for carrying the COT indication information may be that the base station configures P dedicated physical resource blocks, and M is greater than or equal to P is greater than or equal to 2. For example, the base station may divide the bandwidth into M PRB groups within the bandwidth defined by the network, each PRB group includes N consecutive Physical Resource Block (PRB) groups, and the base station may determine P core PRB groups from the M PRB groups, where the P core PRB groups may be any P PRB groups in the M PRB groups, that is, 3 PRB groups (e.g., PRB group 1, PRB group 3, and PRB group 5), or 2 PRB groups (e.g., PRB group 2 and PRB group 3), which is not limited in this embodiment of the present application. The related COT indication information and/or the activation signal may be transmitted through the P core PRB sets, that is, at a transmitting end (e.g., a base station), the COT indication information and/or the activation signal may be transmitted only when a PRB set LBT corresponding to a core PRB set succeeds. At the receiving end (e.g., terminal device), it is accordingly only necessary to detect the COT information and/or the activation signal on the P core PRB sets.

The base station configures P core PRB groups for transmitting COT indication information to the terminal equipment, so that blind detection amount of the terminal equipment can be reduced.

In step S920, the terminal device monitors the COT indication information at a sending timing of the COT indication information, where the COT indication information is used to indicate a COT frame format.

The base station indicates the sending time of the COT indication information to the terminal equipment, so that the terminal equipment can monitor the COT indication information at the indicated sending time, and the missed detection of the COT indication information caused by signal interference or poor channel quality can be avoided.

Meanwhile, the terminal equipment does not need to monitor the COT indication information at each moment, so that the power consumption of the terminal equipment for detecting the COT indication information is saved.

Optionally, the COT indication information may include a length of the COT, that is, a total COT length or a remaining COT length, where the total COT length refers to a time length from a start of the COT to an end of the COT; the remaining COT length refers to a length of time from a position of the current COT indication information to a COT end.

Optionally, the COT indication information may further include a configuration period of a slot format, that is, uplink and downlink allocations in each slot.

Optionally, the COT indication information may further include information of a current channel transmission time. The COT indication information may also be COT initial information or Frame Based Equipment (FBE) information, and the application is not limited thereto.

Optionally, the COT indication information may further include paging location information and/or random access configuration information and/or frame format information of a next COT, and the like.

Optionally, the method 900 may further include steps S1010 to S1040. The present application is not limited to the execution sequence between the steps.

In step S1010, the terminal device receives second configuration information sent by the base station, where the second configuration information is used to indicate the second preset frame format.

For example, taking the COT frame format shown in fig. 10 as an example, a second preset frame format is adopted between the time slot 1 and the time slot 3.

For example, in the second slot of the second preset frame format, the number of downlink symbols may be none, all, or N (i) (1 ≦ i ≦ 7), where all indicates that all symbols of the second slot of the second preset frame format are downlink, none indicates that all symbols of the second slot of the second preset frame format are uplink, and N (i) indicates that the number of downlink symbols in the symbols of the second slot of the second preset frame format is i, for example, when i ≦ 2, N (2) indicates that the number of downlink symbols in the symbols of the second slot of the second preset frame format is 2, and the rest is uplink symbols, that is, the number of uplink symbols is 5. For another example, when i is 7, the number of downlink symbols in the symbols of the second slot in the N (7) second preset frame format is 7, and there is no uplink symbol, that is, the number of uplink symbols is 0.

For another example, the uplink and downlink ratio of the timeslot after timeslot 2 may be: the number of the continuous downlink time slots is A; the number of the continuous downlink symbols is B; the number of the continuous uplink time slots is C; the number of the continuous uplink symbols is D; wherein A, B, C and D are all more than or equal to 0 and are integers.

For example, as shown in fig. 12, a second predetermined frame format according to an embodiment of the present application is shown.

The number of downlink symbols in the first time slot in the second preset frame format is N (4), and from the second time slot, the uplink and downlink ratio in each time slot is respectively: a is 1, B is 7, C is 1, and D is 7. That is, symbols 3 to 6 in slot 1 are downlink symbols, and symbols 7 to 13 in slot 1 are uplink symbols.

Fig. 13 illustrates an uplink/downlink ratio after 2 nd slot cycle in a second preset frame format according to an embodiment of the present application.

In slot 2, all downlink symbols, in slot 3, symbols 0 to 6 are downlink symbols, and symbols 7 to 13 are uplink symbols.

In step S1020, the terminal device receives an activation signal transmitted by the base station.

Optionally, the activation signal may be a wake-up signal, a pilot signal, or a combination of different signals. For example, the combination of the COT activation signal and the channel status monitoring signal may allow the terminal device to perform channel measurement after monitoring the activation signal in step S1030.

Optionally, the physical parameter design of the activation signal is different from the parameter design of the COT indicator information signal transmitted through the physical channel or the signal transmitted by other physical signals. For example, the SCS of the activation signal may be: 312.5KHz, or 480KHz, or 240KHz, and COT indicates that the SCS of the information signal PDCCH is 120KHz, or 60KHz, or 30KHz, or 15 KHz. The physical channel includes a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH) and/or other physical channels, which is not limited in this application.

Optionally, the activation signal may also include COT indication information; namely, the activation signal includes: signal detection sequence, COT duration, frame format indication information, and/or cell identification signal. The signal detection sequence is used for indicating the start of signal transmission or indicating the UE to enter an operating mode, the COT duration represents the length information of the channel occupation time, and the frame format indicates the attribute of part or all of the time slots/symbols (for example, uplink symbols, downlink symbols, flexible symbols, or uncertain signals) in the channel occupation time.

The parameters and format of the activation signal can be the same as those of a preamble (preamble) of an 802.11 series, and after the COT indication information is added into the activation signal, better coexistence of NR-U and WIFI can be realized, and unnecessary interference and power consumption are reduced.

For example, as shown in fig. 10, at the start position of the time slot 1, an activation signal is set.

In step S1030, the terminal device monitors an activation signal sent by the base station, where the activation signal is used to instruct the terminal device to switch to the working mode; wherein the terminal device uses the first preset frame format after the activation signal and before a transmission timing of the COT indication information.

The transmission timing of the COT instruction information is the transmission timing of the first COT instruction information after the activation signal. That is, the transmission timing of the first COT indication information is the transmission timing of the first COT indication information in a state where the terminal device is in a non-idle state. As shown in fig. 10, the COT indication timing 2 is a transmission timing of the first COT indication information, that is, the transmission timing of the COT indication information described in step S1030.

Illustratively, when the terminal device has some modules in the sleep mode, the terminal device listens for a period of time to see whether a request message (e.g., a request for transmitting data or a paging request) is sent to it by the base station, and when the terminal device listens for the activation signal, the terminal device switches the modules in the sleep mode to the working mode.

Alternatively, if the terminal device does not monitor the activation signal, the terminal device may use the first preset frame format before the sending opportunity of the COT indication information.

In step S1040, the terminal device determines a first preset frame format.

And the terminal equipment uses the first preset frame format before the sending opportunity of the COT indication information.

For example, the terminal device may intercept a part of the time slots of the second preset frame format or cyclically use the time slots of the second preset frame format to determine the first preset frame format.

Optionally, if the time length from the activation signal to the transmission timing of the first COT indication information is greater than the time length of the first preset frame format, the second preset frame format may be cyclically used in the time length from the activation signal to the first COT indication information, so as to form the second preset frame format.

Optionally, if the time length from the activation signal to the sending opportunity of the first COT indication information is smaller than the first preset frame format, the terminal device needs to intercept a frame format of a part of the time slot from the second preset frame, so as to form the second preset frame format.

Specifically, the terminal device may sequentially intercept the frame format of the first length as the first preset frame format from an nth (N is a positive integer) time slot of the second preset frame format. The first length is a time length from the activation signal to a transmission timing of the first COT indicator information.

By using the first preset frame format between the sending opportunities of the activation signal to the first COT indication information, the transmission of other data can be carried out before the COT indication information is not detected.

Optionally, the terminal device may sequentially intercept the frame format of the first length as the first preset frame format from the 0 th time slot of the second preset frame format. The first length is a time length from the activation signal to a transmission timing of the first COT indicator information.

Optionally, in the first timeslot of the first preset frame format, a full downlink symbol may be used, a full uplink symbol may be used, or a mixed format (both uplink and downlink symbols) may be used. If there is a channel state monitoring signal after the activation signal, at this time, the full uplink symbol is more reasonable in the first time slot of the first preset frame format. If there is no other signal after activation, either the full downlink symbol or the hybrid format is possible in the first slot of the first preset frame format.

For example, as shown in fig. 13, the second preset frame format is 4 slots long, but the position of the fourth slot is the transmission timing of the first COT indication information, and therefore, the terminal device intercepts the frame format of the first 3 slots of the second preset frame format as the first preset frame format.

Optionally, the terminal device may also sequentially intercept the frame format with the first length as the first preset frame format from the 3 rd time slot of the second preset frame format.

Fig. 14 is a schematic structural diagram of a second preset frame format according to an embodiment of the present application.

As shown in fig. 14, after obtaining the COT indication information, the base station may obtain that the COT is a timeslot from the 7 th timeslot of the second preset frame format to the 14 th timeslot of the second preset frame format, and the timeslot is a timeslot of the COT, and may know that timeslot 7 is a downlink timeslot, timeslot 8 is a conversion timeslot, timeslot 9 is an uplink timeslot, timeslot 10 to timeslot 12 are uplink timeslots, timeslot 13 is a conversion timeslot, and timeslot 14 is an uplink timeslot according to the uplink-downlink ratio of the second preset frame format.

Fig. 15 is a schematic structural diagram of another second preset frame format according to an embodiment of the present application.

In fig. 15, 2 radio frames include 40 time slots, a period is 4 time slots, and in one period, uplink and downlink ratios are sequentially: 2 continuous downlink time slots, one conversion time slot and one uplink time slot.

In the second preset frame format, the terminal device starts with the 1 st time slot in one period of the first preset frame, and intercepts the frame format of 3 time slots as the first preset frame format.

For example, fig. 16 shows the uplink and downlink ratio of the 1 st timeslot in the format of the first default frame according to the embodiment of the present application.

At the position where the start of the first time slot is the start of the COT, the 2 nd symbol of the first time slot is an activation signal, and the uplink and downlink ratio from the 3 rd symbol to the 13 th symbol in the first time slot of the first preset frame format is the uplink and downlink ratio of the 1 st time slot in the second preset frame, that is, the start of the activation signal is a full downlink symbol.

For example, fig. 17 shows uplink and downlink ratios of 2 nd and 3 rd time slots in a format of a first preset frame according to an embodiment of the present application.

The uplink and downlink ratio of the 2 nd and 3 rd time slots in the format of the first preset frame is the uplink and downlink ratio of the 2/3 th time slot in the second preset frame, that is, the 2 nd time slot in the format of the first preset frame is a conversion time slot (including 4 downlink symbols and 10 uplink symbols), and the 3 rd time slot in the format of the first preset frame is an uplink time slot.

The method 900 may further include step S1050, determining a COT frame format according to the COT indication information.

Fig. 18 is a schematic structural diagram of a COT frame format according to an embodiment of the present application.

Optionally, when the base station configures the COT indication information, the base station may directly indicate a cycle of a COT frame format and an uplink-downlink ratio in each timeslot in the COT indication information. Or indirectly indicating the period of the COT frame format and the uplink and downlink proportion in each time slot.

Mode 1 (direct indication of COT frame format period and uplink and downlink ratio in each time slot)

As shown in fig. 18, the COT indication information includes that the length of the COT indication information is 8ms, that is, from slot 1 to slot 8, and the terminal device monitors the COT indication information at the start position of slot 4, so that data is scheduled according to the COT frame format from the start of slot 4 to the end of slot 8.

The COT indication information also includes uplink and downlink ratio in each time slot. For example, in fig. 18, the uplink and downlink ratios in the time slots 4 to 7 are respectively: the number of the continuous downlink time slots is 2; the number of the continuous downlink symbols is 4; the number of continuous uplink time slots is 10; the number of consecutive uplink symbols is 1.

Mode 2 (indirectly indicating the period of the COT frame format and the uplink and downlink ratio in each time slot)

Alternatively, the base station may configure a plurality of configuration items, that is, the COT indication information and an index of the COT indication information in advance (for example, the configuration in table 1). For example, as shown in table 1, the arrangement 0 corresponds to the COT frame format indication information 0, and the COT indication information 0 includes: the period of the COT frame format is 2ms, and the uplink and downlink ratio in each time slot is as follows: the number of the continuous downlink time slots is 2; the consecutive downlink symbols are 7; the number of continuous uplink time slots is 1; the number of consecutive uplink symbols is 7. For another example, the configuration 3 corresponds to the COT frame format indication information 3, and the COT frame format indication information 3 includes: the period of the COT frame format is 1ms, and the uplink and downlink ratio in each time slot is as follows: the number of the continuous downlink time slots is 1; the consecutive downlink symbols are 4; the number of continuous uplink time slots is 0; the number of consecutive uplink symbols is 10.

The base station can configure a plurality of configuration items in advance, namely the corresponding relation between each configuration item and the COT indication information, so that the base station can be directly used when using which frame format of the uplink and downlink ratio, and the frame format of the uplink and downlink ratio does not need to be configured at present, thereby saving the time of data transmission.

Specifically, the correspondence between each configuration and the COT indication information is as described in table 1. The present application is not limited to the correspondence between the index of each COT indication information and the COT indication information in table 1.

TABLE 1

Fig. 19 is a dynamic and periodic COT indication information provided in an embodiment of the present application.

As shown in fig. 19, optionally, the configuration of the first preset frame format may also be performed by placing dynamic COT indication information. Namely: the indication of the COT structure adopts a method of dynamic COT indication and periodic static COT indication.

Optionally, the dynamic COT indication information follows the COT activation signal, which may transmit 1 or more signals (multiple signals facilitate the setting of the out-of-band filter by the UE).

Optionally, the effective duration of the dynamic COT indication information may be the length of the whole COT, or may be the period position indicated by the first COT information in the COT.

Optionally, the COT length of the periodic COT indication information may refer to a time length from a start position of the COT to an end of the COT, or may refer to a remaining COT duration (from a position of the current COT to an end time of the COT);

by combining the dynamic COT indication with the periodic static COT indication, the configuration of the system can be made more flexible. Meanwhile, the problem that the UE fails to detect the COT activation signal or the COT indication information due to signal interference or poor channel quality can be solved.

Fig. 21 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device 100 may include: a receiving module 110.

Optionally, the receiving module 110 is configured to receive first configuration information sent by the base station, where the first configuration information is used to indicate a sending opportunity of the information indicating the channel occupancy time COT.

Optionally, the receiving module 110 is further configured to monitor the COT indication information at a sending time of the COT indication information, where the COT indication information is used to indicate a COT frame format.

Optionally, the first configuration information includes: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

Optionally, the communications apparatus further includes a determining module 120, configured to determine a first preset frame format, where the determining module uses the first preset frame format before a sending opportunity of the COT indication information.

Optionally, the determining module 120 includes a processing module 130, configured to intercept a partial time slot of a second preset frame format or recycle a time slot of the second preset frame format to determine the first preset frame format.

Optionally, the receiving module 110 is further configured to receive second configuration information sent by the base station, where the second configuration information is used to indicate the second preset frame format.

Optionally, the receiving module 110 is further configured to monitor an activation signal sent by the base station, where the activation signal is used to instruct the terminal device to switch to an operating mode; wherein the terminal device uses the first preset frame format after the activation signal and before a transmission timing of the COT indication information.

Optionally, the resource carrying COT indication information includes a core physical resource block PRB group carrying COT indication information, where the core PRB group includes N consecutive PRB groups.

The communication apparatus 100 provided in the present application may correspond to the process executed by the terminal device in the method embodiment of fig. 9 or fig. 11, and the functions of the sending module, the determining module, and the processing module in the communication apparatus may refer to the description above, and detailed descriptions are appropriately omitted here.

It should be understood that the communication apparatus described in fig. 21 may be a terminal device.

Fig. 22 is a schematic structural diagram of another communication device according to an embodiment of the present application. The communication device 200 can include a transmitting module 210.

Optionally, the sending module 210 is configured to send configuration information to the terminal device, where the configuration information is used to indicate a sending opportunity of the information indicated by the channel occupancy time COT.

Optionally, the sending module 210 is further configured to send the COT indication information to the terminal device at a sending time of the COT indication information, where the COT indication information is used to indicate a COT frame format.

Optionally, the first configuration information includes: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

Optionally, the sending module 210 is further configured to send second configuration information to the terminal device, where the second configuration information is used to indicate the second preset frame format.

Optionally, the sending module 210 is further configured to send an activation signal to the terminal device, where the activation signal is used to instruct the terminal device to switch to the working mode.

Optionally, the resource carrying the COT indication information includes a core physical resource block PRB group carrying the COT indication information, where the core PRB group includes N consecutive PRBs.

The communication apparatus 200 provided in the present application may correspond to the process executed by the network side device in the above-mentioned method embodiment of fig. 9 or fig. 11, and the function of the sending module in the communication apparatus may refer to the description above, and detailed description is appropriately omitted here.

It should be understood that the communication apparatus described in fig. 22 may be a network-side device.

Embodiments of the present application also provide a computer program storage medium having program instructions, which, when executed directly or indirectly, cause a computer to perform the method in any of the above method embodiments.

The embodiment of the present application further provides a chip system, where the chip system includes at least one processor, and when the program instructions are executed in the at least one processor, the communication device installed with the chip system is caused to perform the method in any of the above method embodiments.

An embodiment of the present application further provides a communication system, including: a communication device for use in a method in any of the above method embodiments.

In this application, the term "and/or" describes an association relationship of associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

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

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

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (20)

1. A method for configuring a frame format, comprising:

the method comprises the steps that terminal equipment receives first configuration information sent by a base station, wherein the first configuration information is used for indicating the sending opportunity of Channel Occupation Time (COT) indication information;

and the terminal equipment monitors the COT indication information at the sending time of the COT indication information, wherein the COT indication information is used for indicating the COT frame format.

2. The method of claim 1, wherein the first configuration information comprises: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

3. The method of claim 1, further comprising:

and the terminal equipment determines a first preset frame format, wherein the terminal equipment uses the first preset frame format before the sending opportunity of the COT indication information.

4. The method of claim 3, the terminal device determining a first preset frame format, comprising: intercepting part of time slots of a second preset frame format or circularly using the time slots of the second preset frame format to determine the first preset frame format.

5. The method of claim 4, further comprising:

and the terminal equipment receives second configuration information sent by the base station, wherein the second configuration information is used for indicating the second preset frame format.

6. The method according to any one of claims 3 to 5, further comprising:

the terminal equipment monitors an activation signal sent by the base station, wherein the activation signal is used for indicating the terminal equipment to switch to a working mode;

wherein the terminal device uses the first preset frame format after the activation signal and before a transmission timing of the COT indication information.

7. The method of claim 2, wherein the resource carrying the COT indication information comprises a core Physical Resource Block (PRB) group carrying the COT indication information, and wherein the core PRB group comprises N consecutive PRBs.

8. A method for configuring a frame format, comprising:

a base station sends first configuration information to terminal equipment, wherein the first configuration information is used for indicating the sending opportunity of COT (channel occupancy time) indication information;

and the base station sends the COT indication information to the terminal equipment at the sending time of the COT indication information, wherein the COT indication information is used for indicating the COT frame format.

9. The method of claim 8, wherein the first configuration information comprises: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

10. The method of claim 8, further comprising:

and the base station sends second configuration information to the terminal equipment, wherein the second configuration information is used for indicating a second preset frame format.

11. The method according to any one of claims 8 to 10, further comprising:

and the base station sends an activation signal to the terminal equipment, wherein the activation signal is used for indicating the terminal equipment to be switched to a working mode.

12. The method of claim 9, wherein the resource carrying the COT indication information comprises a core Physical Resource Block (PRB) group carrying the COT indication information, and wherein the core PRB group comprises N consecutive PRBs.

13. A communications apparatus, comprising:

a receiving module, configured to receive first configuration information sent by a base station, where the first configuration information is used to indicate a sending opportunity of a channel occupancy time COT indication information;

the receiving module is further configured to monitor the COT indication information at a sending time of the COT indication information, where the COT indication information is used to indicate a COT frame format.

14. The apparatus of claim 13, wherein the first configuration information comprises: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

15. The apparatus of claim 13, wherein the receiving module is further configured to receive second configuration information sent by the base station, and the second configuration information is used to indicate a second preset frame format.

16. The apparatus of claim 15, wherein the receiving module is further configured to monitor an activation signal sent by the base station, and the activation signal is used to instruct the apparatus to switch to the operating mode;

wherein the apparatus uses a first preset frame format after the activation signal and before a transmission opportunity of the COT indication information.

17. A communications apparatus, comprising:

a sending module, configured to send first configuration information to a terminal device, where the first configuration information is used to indicate a sending opportunity of a channel occupancy time COT indication information;

the sending module is further configured to send the COT indication information to the terminal device at a sending time of the COT indication information, where the COT indication information is used to indicate a COT frame format.

18. The apparatus of claim 17, wherein the first configuration information comprises: a sending period of the COT indication information, a sending offset of the COT indication information, or information of resources carrying the COT indication information.

19. The apparatus of claim 17, wherein the sending module is further configured to send second configuration information to the terminal device, where the second configuration information is used to indicate a second preset frame format.

20. The apparatus of claim 19, wherein the sending module is further configured to send an activation signal to the terminal device, and wherein the activation signal is used to instruct the terminal device to switch to the operating mode.

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