CN113194434B

CN113194434B - Indication method and device for configuration information

Info

Publication number: CN113194434B
Application number: CN202011635859.1A
Authority: CN
Inventors: 焦春旭; 黎超; 向铮铮; 卢磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2023-05-12
Anticipated expiration: 2040-02-14
Also published as: CN118612869A; CN113194434A

Abstract

The application provides a method and a device for indicating configuration information, which are suitable for the fields of vehicle networking V2X, intelligent network vehicle connection, auxiliary driving, intelligent driving and the like, are used for solving the problem that SL transmission in the prior art causes interference to DL transmission, and can effectively save signaling overhead. The method is applied to the first terminal equipment and comprises the following steps: receiving uplink and downlink Time Division Duplex (TDD) configuration sent by network equipment; and sending indication information to the second terminal equipment according to the uplink and downlink TDD configuration, wherein the indication information is borne in a physical layer side uplink broadcast channel PSBCH of a side uplink synchronous signal block S-SSB, and the indication information is used for indicating period information contained in the uplink and downlink TDD configuration.

Description

Indication method and device for configuration information

The application is application number 202080003448.2, and the name of the application is a divisional application of a patent application of 'a method and a device for indicating configuration information'.

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for indicating configuration information.

Background

In a fifth generation (5th generation,5G) mobile communication network New Radio (NR) system, a 5G base station (next generation Node B, gNB) indicates to a UE a time allocation manner of a Downlink (DL) and an Uplink (UL) in a certain time range by transmitting an uplink-downlink time division duplex (time division duplex, TDD) configuration in a Uu interface. The UE may receive DL data from the gNB in DL transmission time and may transmit UL data to the gNB in UL transmission time.

The data transmission of the PC5 interface and Uu interface used for communication between UEs may be performed on the same carrier frequency, but the Side Link (SL) transmission in the PC5 interface cannot occupy DL transmission time. In the prior art, the lack of the indication of the uplink and downlink TDD configurations between UEs causes that the uplink and downlink TDD configurations are not considered when the UEs perform SL transmission, and the UEs occupy DL transmission time, which causes interference to DL transmission.

Disclosure of Invention

The embodiment of the application provides a method and a device for indicating configuration information, which are suitable for the fields of Internet of vehicles (vehicle to everything, V2X), intelligent network connection, auxiliary driving, intelligent driving and the like and are used for solving the problem that SL transmission in the prior art causes interference to DL transmission.

In a first aspect, an embodiment of the present application provides a method for indicating configuration information, which is applied to a first terminal device, including:

receiving uplink and downlink Time Division Duplex (TDD) configuration from network equipment;

and sending indication information to a second terminal device according to the uplink and downlink TDD configuration, wherein the indication information is borne in a physical layer side downlink broadcast channel PSBCH of a side downlink synchronous signal block S-SSB, and the indication information is used for indicating period information contained in the uplink and downlink TDD configuration.

In the embodiment of the invention, the first terminal equipment indicates the uplink and downlink TDD configuration to the second terminal equipment through the PSBCH of the S-SSB, so that the second terminal equipment performs SL transmission according to the indication to avoid interfering with DL transmission, and performs simplified indication on the uplink and downlink TDD configuration, thereby effectively saving signaling overhead.

In an alternative implementation, the period information includes: the number of TDD patterns and/or the period of the TDD patterns.

In an alternative implementation, the indication information is further used to indicate UL transmission time in the period of the TDD pattern.

In the embodiment of the present application, UL transmission time is indicated to the second terminal device, so that the second terminal device can perform SL transmission within the UL transmission time, thereby further avoiding interference to DL transmission.

In an alternative implementation, the indication information includes a first bit sequence, where the first bit sequence is used to indicate a period of the TDD pattern.

In an alternative implementation manner, the indication information includes a first bit sequence, a first part of bits in the first bit sequence is used for indicating the number of the TDD patterns, and a second part of bits in the first bit sequence is used for indicating the period of the TDD patterns.

In an alternative implementation, the indication information includes a second bit sequence;

when the number of TDD patterns included in the uplink and downlink TDD configurations is 1, the second bit sequence is used to indicate UL transmission time in a period of the TDD patterns; or,

when the number of TDD patterns included in the uplink and downlink TDD configurations is N, the second bit sequence is configured to indicate UL transmission time in a period of each of the N TDD patterns; wherein N is an integer greater than 1.

when the number of TDD patterns included in the uplink and downlink TDD configurations is N, a first portion of bits in the second bit sequence is used to indicate a first TDD pattern of N TDD patterns, and a second portion of bits in the second bit sequence is used to indicate UL transmission time in a period of the first TDD pattern.

In an alternative implementation, the UL transmission time in the period of the first TDD pattern is greater than the UL transmission time in the period of a second TDD pattern, where the second TDD pattern is any one of the N TDD patterns except the first TDD pattern.

In the embodiment of the application, the indication information is represented by the bits with limited first bit sequences and/or second bit sequences, so that the analysis is convenient, and the signaling overhead of communication between terminal devices can be saved.

In an alternative implementation, the method further includes:

and determining a first UL transmission time according to the ratio of the subcarrier spacing SCS of the S-SSB to a reference SCS contained in the uplink and downlink TDD configuration, wherein the first UL transmission time is the UL transmission time in the period of any one of the N TDD patterns.

In the embodiment of the present invention, the first UL transmission time is determined according to the SCS of the S-SSB and the reference SCS in the uplink and downlink TDD configuration interacted between the terminal devices, instead of directly sending the reference data in the uplink and downlink TDD configuration, such as the reference SCS, the reference UL transmission time, etc., to the second terminal device, which can be more flexibly suitable for actual communication, and instruct the second terminal device to perform SL transmission in the corresponding UL transmission time, so as to avoid interference with DL transmission.

In an alternative implementation, the method further includes:

comparing the subcarrier spacing SCS of the S-SSB with a SCS threshold; wherein the SCS threshold is related to a number of bits for indicating a first UL transmission time, the first UL transmission time being a UL transmission time in a period of any one of the N TDD patterns;

And determining the first UL transmission time according to the comparison result.

In the embodiment of the present application, consideration of the number of bits used for indicating UL transmission time is added, an SCS threshold is determined, and further, the UL transmission time is determined according to SCS of S-SSB interacted between terminal devices in combination with the SCS threshold, so that limited bits can be reasonably applied while being flexibly applicable to actual communication, and indication of UL transmission time is achieved, so that a second terminal device performs SL transmission in corresponding UL transmission time, and DL transmission is prevented from being interfered.

In an alternative implementation, the determining the first UL transmission time according to the result of the comparison includes:

when the SCS of the S-SSB is smaller than or equal to the SCS threshold value, determining the first UL transmission time according to the ratio of the SCS of the S-SSB to a reference SCS contained in the uplink and downlink TDD configuration; or,

and when the SCS of the S-SSB is larger than the SCS threshold, determining the first UL transmission time according to the ratio of the SCS threshold to a reference SCS contained in the uplink and downlink TDD configuration information.

When the SCS of the S-SSB is larger than the SCS threshold value, determining a second UL transmission time according to the ratio of the SCS of the S-SSB to a reference SCS contained in the uplink and downlink TDD configuration information;

when the second UL transmission time is greater than a time threshold, determining the first UL transmission time according to the time threshold, or,

when the second UL transmission time is less than or equal to the time threshold, determining the first UL transmission time according to the second UL transmission time;

wherein the time threshold is a maximum UL transmission time that the bit for indicating the first UL transmission time can indicate.

when the SCS of the S-SSB is larger than the SCS threshold value, determining a second UL transmission time according to the ratio of the SCS of the S-SSB to a reference SCS contained in the uplink and downlink TDD configuration;

reducing the second UL transmission time according to a preset step length;

and determining the first UL transmission time according to the reduced second UL transmission time.

In a second aspect, an embodiment of the present application provides a method for indicating configuration information, which is applied to a second terminal device, and includes:

And receiving indication information from a first terminal device, wherein the indication information is carried in a physical layer side uplink broadcast channel PSBCH of a side uplink synchronous signal block S-SSB, and the indication information is used for indicating period information contained in uplink and downlink time division duplex TDD configuration received by the first terminal device.

In the embodiment of the application, the second terminal device receives the indication information from the first terminal device, where the indication information is related to the uplink and downlink TDD configuration received by the first terminal device, and the second terminal device may perform SL transmission with other terminal devices according to the indication information, so as to avoid interference caused by SL transmission performed between the terminal devices to DL transmission performed between the network device and the terminal device.

In this embodiment of the present application, the second terminal device may perform SL transmission according to the UL transmission time indicated by the indication information, so as to further avoid interference to DL transmission.

In an alternative implementation, the UL transmission time in the period of any one of the N TDD patterns is determined according to the ratio of the subcarrier spacing SCS of the S-SSB to the reference SCS included in the uplink and downlink TDD configurations.

In an alternative implementation, the UL transmission time in the period of any one of the N TDD patterns is determined according to a comparison result between the subcarrier spacing SCS of the S-SSB and an SCS threshold, the SCS threshold being related to a first number of bits, the first number of bits being a number of bits for indicating the UL transmission time in the period of the any one TDD pattern.

In a third aspect, an embodiment of the present application provides an indicating device for configuration information, including:

a receiving module, configured to receive uplink and downlink time division duplex TDD configuration from a network device;

and the sending module is used for sending indication information to the second terminal equipment according to the uplink and downlink TDD configuration, wherein the indication information is borne in a physical layer side downlink broadcast channel PSBCH of a side downlink synchronous signal block S-SSB, and the indication information is used for indicating the period information contained in the uplink and downlink TDD configuration.

In an alternative implementation, the apparatus further includes:

a processing module, configured to determine a first UL transmission time according to a ratio of a subcarrier spacing SCS of the S-SSB to a reference SCS included in the uplink and downlink TDD configuration, where the first UL transmission time is a UL transmission time in a period of any one of the N TDD patterns.

In an alternative implementation, the apparatus further includes:

a processing module, configured to compare a subcarrier spacing SCS of the S-SSB with an SCS threshold; wherein the SCS threshold is related to a number of bits for indicating a first UL transmission time, the first UL transmission time being a UL transmission time in a period of any one of the N TDD patterns; and determining the first UL transmission time according to the comparison result.

In an alternative implementation, the processing module is further configured to:

reducing the second UL transmission time according to a preset step length;

In a fourth aspect, an embodiment of the present application provides an indicating device for configuration information, including:

the receiving module is configured to receive indication information from a first terminal device, where the indication information is carried in a physical layer side uplink broadcast channel PSBCH of a side uplink synchronization signal block S-SSB, and the indication information is used to indicate period information included in uplink and downlink time division duplex TDD configuration received by the first terminal device.

In this embodiment of the present application, the second terminal device may perform SL transmission according to the UL transmission time indicated by the indication information, so as to avoid interference to DL transmission.

In a fifth aspect, embodiments of the present application provide a communication apparatus, including: a processor and a memory;

the memory is used for storing a computer program;

the processor is configured to execute the computer program stored in the memory, so that the communication device performs the method in any possible implementation manner of the first aspect, or performs the method in any possible implementation manner of the second aspect.

In a sixth aspect, embodiments of the present application provide a communication apparatus, including: a processor and interface circuit;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

the processor is configured to execute the code instructions to perform the method of any of the possible implementations of the first aspect or to perform the method of any of the possible implementations of the second aspect.

In a seventh aspect, embodiments of the present application provide a readable storage medium storing instructions that, when executed, cause a method in any one of the possible implementations of the first aspect to be implemented, or cause a method in any one of the possible implementations of the second aspect to be implemented.

In an eighth aspect, embodiments of the present application provide a computer program product comprising: computer program code which, when run by a processor of a communication device, causes the communication device to perform the method of any one of the possible implementations of the first aspect described above, or the method of any one of the possible implementations of the second aspect described above.

In a ninth aspect, an embodiment of the present application provides a communication system, including the device for indicating configuration information in the third aspect and the device for indicating configuration information in the fourth aspect.

Drawings

Fig. 1 is a schematic diagram of time allocation according to an embodiment of the present application;

fig. 2 is a schematic diagram of an uplink and downlink TDD configuration provided in an embodiment of the present application;

fig. 3 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 4 is a schematic view of an application scenario provided in an embodiment of the present application;

Fig. 5 is a hardware block diagram of a transmitting UE according to an embodiment of the present application;

fig. 6 is a hardware block diagram of a receiving end UE according to an embodiment of the present application;

fig. 7 is a flowchart of a method for indicating configuration information according to an embodiment of the present application;

fig. 8 is a schematic diagram of a first UL transmission time indication provided in an embodiment of the present application;

fig. 9 is a schematic diagram of a second UL transmission time indication provided in an embodiment of the present application;

fig. 10 is a schematic diagram of a third UL transmission time indication provided in an embodiment of the present application;

fig. 11 is a schematic diagram of a fourth UL transmission time indication provided in an embodiment of the present application;

fig. 12 is a schematic diagram of a fifth UL transmission time indication provided in an embodiment of the present application;

fig. 13 is a schematic diagram of comparison of UL slot numbers according to an embodiment of the present application;

fig. 14 is a schematic diagram illustrating another comparison of UL slot numbers according to an embodiment of the present application;

fig. 15 is a flowchart of another method for indicating configuration information according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of an indicating device for configuration information according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of another configuration information indicating device according to an embodiment of the present application;

Fig. 18 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 19 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings, wherein it is apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The embodiment of the application provides a method and a device for indicating configuration information, which are used for solving the problem that SL transmission causes interference to DL transmission in the prior art. Because the principle of solving the problem by the method and the device is the same, the embodiments of the method part and the device part can be referred to each other, and the repetition is not repeated.

The following is an explanation of some terms provided in this application to facilitate understanding by those skilled in the art:

(1) Network equipment

The network device may be a base station or AN Access Node (AN) providing wireless access services for the terminal. The network device may specifically be a base station (base transceiver station, BTS) in a global system for mobile communications (global system for mobile communication, GSM) or a code division multiple access (code division multiple access, CDMA) system, or a base station (NodeB) in a wideband code division multiple access (wideband code division multiple access, WCDMA) system, or a base station device (gNB) in a 5G network, a small base station device, a wireless access node (WiFi AP), a wireless interworking microwave access base station (worldwide interoperability for microwave access base station, wiMAX BS), or the like, which is not limited in this application.

(2) Terminal equipment

A terminal device, also known as a terminal, user Equipment (UE), mobile Station (MS), mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user, such as a handheld device, a vehicle mount device, a wearable device, a computing device, or other processing device connected to a wireless modem, as well as various forms of user devices. Including but not limited to: stations (STA), mobile Stations (MS), subscriber Units (SU), personal computers (personal computer, PC), laptop Computers (LC), tablet Computers (TC), netbooks (netbook), terminals (terminal), personal digital assistants (personal digital assistant, PDA), mobile WiFi hotspot devices (mifi devices), smart watches, smart glasses, etc. The terminal devices may be distributed in the entire network, and for convenience of description, the terminal devices or UEs are abbreviated as terminal devices or UEs in this application.

(3) Time division duplex and uplink and downlink time division duplex configuration

Time division duplexing (time division duplex, TDD) is a duplexing mode widely used in wireless communication, based on which Downlink (DL) and Uplink (UL) transmissions in a communication interface used for communication between a network device and a terminal device, i.e., uu interface, can be performed on the same carrier frequency by means of time division.

In order to realize low-latency transmission, especially to adapt to ultra-low-latency (URLLC) service ultra-low latency requirements, a 5G base station (next generation Node B, gNB) indicates a time allocation manner of DL and UL in a certain time range to a UE by sending uplink and downlink TDD configuration in a Uu interface, as shown in fig. 1, the UE may perform frequent uplink and downlink switching according to the uplink and downlink TDD configuration, may receive DL data from the gNB in DL time, and may send UL data to the gNB in UL time.

The uplink and downlink TDD configuration is divided into uplink and downlink TDD configuration at a cell level and uplink and downlink TDD configuration at a UE level. The uplink and downlink TDD configuration at the cell level is applicable to all UEs within the gNB coverage, which indicates the number of DL slots and UL slots on the slot (slot) granularity, and the number of DL symbols and UL symbols on the orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol granularity; the uplink and downlink TDD configuration at the UE level is applicable to a UE in the coverage of the gNB, and further introduces a configurable time slot on the basis of the cell level, that is, in addition to the DL time slot represented by D, the UL time slot represented by U, and the configurable time slot represented by F. The uplink and downlink TDD configuration in the configurable slot is with granularity of OFDM symbols, i.e. different symbols in the same slot may be in different uplink and downlink states. All OFDM symbols in a configurable slot may be configured as UL symbols or DL symbols.

The gNB sends the corresponding uplink and downlink TDD configuration to the UE through a radio resource control (radio resource control, RRC) signaling, and specifically, the gNB indicates the UE in the gNB coverage area or the cell through a TDD-UL-DL-ConfigCommon cell in the RRC signaling. The indication content of the TDD-UL-DL-ConfigCommon cell in the 3GPP 38.331V15.7.0 standard is as follows:

the TDD-UL-DL-ConfigCommon cell further contains two cells, or three cells, as explained below:

(1) preferenceSubcarriereR spacing: reference subcarrier spacing (subcarrier spacing, SCS) is given:

the value may be one of the following: 15kHz,30kHz,60kHz,120kHz,240kHz. The uplink and downlink TDD configuration will use the reference SCS to determine the time limit of DL and UL transmissions, which may be different from the actual SCS used for data transmissions in the Uu interface, which cannot be larger than the actual SCS used for any data transmission configured in the Uu interface.

(2) Pattern1: a TDD Pattern (Pattern) of the uplink and downlink TDD configuration is given, pattern1 continues to point to a TDD-UL-DL-Pattern cell, from which specific parameters of Pattern1 are given.

(3) Pattern2: an optional cell, when the TDD-UL-DL-ConfigCommon cell does not contain the cell, indicating that there is only one TDD pattern in the uplink-downlink TDD configuration, i.e., pattern1; when the TDD-UL-DL-ConfigCommon cell contains a cell of Pattern2, it is indicated that the uplink and downlink TDD configurations are determined by both of the two TDD patterns of Pattern1 and Pattern2, pattern2 continues to point to the TDD-UL-DL-Pattern cell, and the specific parameters of Pattern2 are given by the TDD-UL-DL-Pattern cell.

Both Pattern1 and Pattern2 continue to point to TDD-UL-DL-Pattern cells, such as the indication content of TDD-UL-DL-Pattern cells in 3GPP 38.331V15.7.0 standard:

the TDD-UL-DL-Pattern cell further includes five cells, or six cells, as explained below:

(1) dl-UL-transmissionpermeability: denoted as P ms, for indicating a period of one pattern in the uplink and downlink TDD configuration, the value may be one of the following: 0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,5ms,10ms. But if DL-UL-transmission periodicity-v1530 cells are additionally configured in the TDD-UL-DL-Pattern cells, the UE will ignore the indication in the DL-UL-transmission periodicity cells;

(2) nrofDownlinkSlots: denoted as d _slots The value range of the number of the DL time slots in one pattern in the uplink and downlink TDD configuration is an integer between 0 and 320;

(3) nrofDownlinkSymbols: denoted as d _sym The value range of the number of DL symbols in a TDD pattern in the uplink and downlink TDD configuration is an integer between 0 and 13;

(4) nrofUplinkSlots: represented as u _slots The value range of the number of UL time slots in one TDD pattern in the uplink and downlink TDD configuration may be an integer between 0 and 320;

(5) nrofUplinkSymbols: represented as u _sym The value range of the number of the UL symbols in one TDD pattern in the uplink and downlink TDD configuration may be an integer between 0 and 13;

(6) dl-UL-transmissionPeriology-v 1530: the optional cell may have a value in one of the following ranges: 3ms,4ms. When the TDD-UL-DL-Pattern cell does not include the DL-UL-transmissionPeridiology-v 1530 cell, the UE determines a Pattern period in the uplink and downlink TDD configuration through the DL-UL-transmissionPeridiology cell; when the TDD-UL-DL-Pattern cell includes a DL-UL-transmission periodicity-v1530 cell, the UE ignores the content of the DL-UL-transmission periodicity cell, and determines the period of one TDD Pattern in the uplink and downlink TDD configurations from the DL-UL-transmission periodicity-v1530 cell.

According to the time slot configuration period (slot configuration period) specified in the 3GPP 38.213 V16.0.0 standard, the above parameters P, d _slots ，d _sym ，u _slots And N _sym The usage of (2) is as follows: in one TDD pattern included in the uplink and downlink TDD configuration, the uplink and downlink TDD configurations are allocated based on the reference SCS (i.e.,

) The slot configuration period P ms includes +.>

Reference time slots. In S reference time slots, the front d _slots The time slots are DL time slots, the latter u _slots The time slots are UL time slots. Front d _slots D after a time slot _sym The symbols are DL symbols, post u _slots N before each time slot _sym The symbols being UL symbols, the remainder

The symbols are configurable symbols. Wherein (1)>

Representing the number of OFDM symbols in one slot, when using a conventional cyclic prefix (normal cyclic prefix, NCP), the +_>

When using extended cyclic prefix (extended cyclic prefix, ECP), the ++>

For ease of understanding, referring to fig. 2, an embodiment of the present application provides a schematic diagram of an uplink and downlink TDD configuration, and in fig. 2, a period of a TDD pattern in the uplink and downlink TDD configuration and a time allocation manner in the period are specifically shown as follows: the reference SCS indicated in the TDD-UL-DL-ConfigCommon cell is 30kHz, and only includes pattern1 cells; the parameters in the TDD-UL-DL-Pattern cell corresponding to Pattern1 are as follows: p=5 ms, d _slots ＝5，d _sym ＝4，u _slots ＝2，N _sym ＝8。

It should be noted that when the TDD-UL-DL-ConfigCommon cell contains both pattern1 and pattern2, the total period of the uplink and downlink TDD configurations will be the sum of two periods, i.e. (p+p) ₂ ) ms, where P ₂ Indicating the period indicated by the TDD-UL-DL-Pattern cell corresponding to Pattern 2. Within the total period, the front P ms uses the uplink and downlink TDD configuration corresponding to pattern1, and the back P ₂ ms uses the uplink and downlink TDD configuration corresponding to pattern 2. The configuration mode of the uplink and downlink time slots in a single period is consistent with the configuration mode of the uplink and downlink symbol numbers, and no detailed description is given here.

(4) Time slot and subcarrier spacing

A slot is a unit of time used for transmitting DL data, UL data, or SL data. Alternatively, a slot includes 14 or 12 OFDM symbols. In a 5GNR system, the number of slots contained in one frame (frame) is also different for different subcarrier spacings (subcarrier spacing, SCS). Assuming that one frame is specified as 10ms and NCP is used, then:

when the SCS is 15kHz, 10 time slots are contained in a frame of 10ms, and a single time slot corresponds to 1ms;

when the SCS is 30kHz, 20 time slots are contained in a frame of 10ms, and a single time slot corresponds to 0.5ms;

when the SCS is 60kHz, 40 time slots are contained in a frame of 10ms, and a single time slot corresponds to 0.25ms;

when the SCS is 120kHz, 80 slots are contained in a 10ms frame, and a single slot corresponds to 0.125ms.

But if ECP is used, only SCS is supported at 60khz, 40 slots are contained within a 10ms frame, a single slot corresponding to 0.25ms.

(5) In the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, a and B exist together, and B exists alone; the symbol "/", generally indicates that the front and rear associated objects are an "or" relationship. Plural means two or more; in addition, it should be understood that in the description of embodiments of the present application, the words "first," "second," and the like are used merely for distinguishing between the descriptions and not be construed as indicating or implying a relative importance or order.

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

First, fig. 3 illustrates a communication system architecture, where a communication system includes a first terminal device and a second terminal device;

the first terminal device is configured to receive uplink and downlink TDD configuration from a network device (such as the foregoing gNB), and indicate the uplink and downlink TDD configuration to the second terminal device;

and the second terminal equipment is used for determining the usable time of the Side Link (SL) transmission according to the instruction of the first terminal equipment.

In the embodiment of the application, the first terminal equipment indicates the received uplink and downlink TDD configuration to the second terminal equipment, so that interference of SL transmission between the terminal equipment on DL transmission between the network equipment and the terminal equipment can be avoided. In addition, a network device is also illustrated in fig. 3.

In the embodiment of the present application, the UL transmission time is indicated, and may also be understood as the SL transmission time, which is not limited herein.

In an alternative embodiment, the second terminal device may also send an indication of the first terminal device to the other terminal devices.

In an alternative embodiment, the first terminal device may directly indicate the uplink and downlink TDD configurations to the second terminal device by sending a wireless signal to the second terminal device; in another alternative embodiment, the first terminal device may indirectly indicate the uplink and downlink TDD configurations to the second terminal device through the intermediate device, that is, first send a wireless signal to the intermediate device to indicate the uplink and downlink TDD configurations to the intermediate device, and then forward, via the intermediate device, relevant indication information of the uplink and downlink TDD configurations to the second terminal device.

In an alternative embodiment, the first terminal device may be an edge device within the coverage area of the network device, and the second terminal device may be a device capable of directly or indirectly wirelessly communicating with the first terminal device and outside the coverage area of the network device, so as to avoid DL transmission within the SL transmission interference range between the edge device and the device outside the coverage area.

In an alternative embodiment, the first terminal device may send a side uplink synchronization signal block (sidelink synchronization signal block, S-SSB) carrying relevant indication information of the uplink and downlink TDD configuration to the second terminal device via the PC5 interface. Based on the above, the embodiment of the application can be applied to the transmission and receiving scenes of the S-SSB in the SL scene; among them, SL scenes include a car networking communication (vehicle to everything, V2X) scene, a device-to-device (D2D) communication scene, and the like. The S-SSB may also be referred to as a side-uplink synchronization signal/physical layer side-uplink broadcast channel block (S-SS/PSBCH block).

For easy understanding, in the embodiment of the present application, a vehicle-to-vehicle communication (vehicle to vehicle, V2V) scenario in internet of vehicles is specifically taken as an example, and an application scenario schematic diagram is provided, as shown in fig. 4: the scenario includes a transmitting UE (i.e., the first terminal device) and a receiving UE (i.e., the second terminal device). In fig. 4, the transmitting UE and the receiving UE are both exemplified by a vehicle UE. However, the transmitting UE and the receiving UE in the actual application scenario may be any type of terminal device, which is not limited herein.

The transmitting terminal UE is a transmitting entity of the S-SSB in the SL scene. The transmitting end UE can enable other terminal equipment to realize time synchronization with the transmitting end UE by transmitting the S-SSB, thereby realizing the SL communication function. In addition, the transmitting end UE also transmits related indication information of the uplink and downlink TDD configuration by transmitting the S-SSB.

The receiving end UE is a receiving entity of the S-SSB in the SL scene. The receiving end UE can realize time synchronization with other terminal equipment through receiving the S-SSB, thereby realizing the SL communication function. In addition, the receiving end UE may analyze the related indication information of the uplink and downlink TDD configuration transmitted in the S-SSB. When the receiving end UE performs SL transmission, the interference to DL transmission can be avoided according to the relevant indication information of the uplink and downlink TDD configuration.

Specifically, referring to a hardware block diagram of a transmitting UE shown in fig. 5, the transmitting UE includes a processing module and a communication module. The processing module is used for processing algorithms, software, programs, storage and the like involved in the communication process. The communication module comprises a transmitting module for transmitting wireless signals such as S-SSB, SL data, UL data, and a receiving module for receiving wireless signals such as S-SSB, SL data, DL data; referring to a hardware block diagram of a receiving end UE shown in fig. 6, the receiving end UE includes a processing module and a communication module. The processing module is used for processing algorithms, software, programs, storage and the like involved in the communication process. The communication module includes a transmitting module for transmitting wireless signals, such as S-SSB, SL data, and a receiving module for receiving wireless signals, such as S-SSB, SL data.

Further, considering that the network device indicates the uplink and downlink TDD configuration to the first terminal device through RRC signaling, the signaling overhead used by the TDD-UL-DL-ConfigCommon cell is large, and if the first terminal device directly sends the uplink and downlink TDD configuration to other UEs, such as the second terminal device, a large signaling overhead is also generated. Optionally, in the embodiment of the present application, a brief configuration may be indicated to other UEs according to uplink and downlink TDD configurations, so that the other UEs perform SL transmission according to the indication to avoid interfering DL transmission. The detailed description is as follows:

referring to fig. 7, an embodiment of the present application provides a method for indicating configuration information, where the method is applied to a first terminal device, and includes:

step S701, an uplink and downlink TDD configuration from a network device is received.

Step S702, according to the uplink and downlink TDD configuration, sends indication information to the second terminal device, where the indication information is carried in a physical layer side uplink broadcast channel PSBCH of the side uplink synchronization signal block S-SSB, and the indication information is used to indicate period information included in the uplink and downlink TDD configuration.

In the embodiment of the present application, the first terminal device performs the simplified indication on the uplink and downlink TDD configurations while performing the indication on the uplink and downlink TDD configurations through the PSBCH of the S-SSB, that is, indicates the period information included in the uplink and downlink TDD configurations, and can reduce signaling overhead compared with directly sending the uplink and downlink TDD configurations.

In an alternative embodiment, the indication information is further used for indicating UL transmission time in the period of the TDD pattern, so as to indicate to the second terminal device that SL transmission is performed within the UL transmission time, so as to avoid interference caused by the DL transmission time occupied by the SL transmission; wherein the UL transmission time includes a UL slot number and/or a UL symbol number.

In an alternative embodiment, the indication information may be carried in particular in the payload (payload) of the PSBCH of the side-uplink synchronization signal block S-SSB. In particular, the indication information may be carried by a part of bits of the PSBCH payload, such as W bits of the PSBCH payload, in which the period information is indicated by a bit sequence of X bits, in which the UL transmission time is indicated by a bit sequence of Y bits, where W is an integer greater than or equal to 0, X is an integer greater than or equal to 0 and less than or equal to W, and Y is an integer greater than or equal to 0 and less than or equal to W.

In an alternative embodiment, the foregoing period information includes: the number of TDD patterns and/or the period of TDD patterns; wherein the number of TDD patterns is one or more, and the period of the TDD pattern includes a period of each of the one or more TDD patterns.

In an alternative embodiment, the indication information includes a first bit sequence, where the first bit sequence corresponds to the foregoing period information, and the specific indication manner may be implemented with reference to the following two embodiments:

first embodiment:

a first part of bits in the first bit sequence are used for indicating the number of the TDD patterns, and a second part of bits in the first bit sequence are used for indicating the period of the TDD patterns; the period of the TDD pattern is related to the number of TDD patterns, for example, according to the indication content of the TDD-UL-DL-ConfigCommon cell in the 3GPP 38.331V15.7.0 standard, the uplink and downlink TDD configurations only include pattern1, which means that the number of TDD patterns is 1, and the period of the TDD pattern only includes the period of pattern 1; the uplink and downlink TDD configurations include pattern1 and pattern2, which indicates that the number of TDD patterns is 2, and the period of the TDD patterns includes the period of pattern1 and the period of pattern2. That is, when the number of TDD patterns has a value ranging from 1 to 2, it can be determined whether the uplink and downlink TDD configurations include pattern2 according to the indication of the first portion of bits.

In implementation, a periodic index table may be configured in the first terminal device and the second terminal device, and the second part of bits in the first bit sequence is assigned according to the index corresponding to the period of the TDD pattern, so as to implement indication of the period of the TDD pattern.

For ease of understanding, the period of the TDD-UL-DL-Pattern cell in the 3GPP 38.331 V15.7.0 standard is described as follows:

optionally, the first part of bits in the first bit sequence includes 1 bit, where a value of 0 for 1 bit indicates that the number of TDD patterns included in the uplink and downlink TDD configurations is 1, that is, only pattern1 is included in the uplink and downlink TDD configurations, and a value of 1 for 1 bit indicates that the number of TDD patterns included in the uplink and downlink TDD configurations is 2, that is, pattern1 and pattern2 are included in the uplink and downlink TDD configurations; alternatively, a 1-bit value of 1 indicates that the number of TDD patterns included in the uplink and downlink TDD configurations is 1, that is, the uplink and downlink TDD configurations include only pattern1, and a 1-bit value of 0 indicates that the number of TDD patterns included in the uplink and downlink TDD configurations is 2, that is, the uplink and downlink TDD configurations include pattern1 and pattern2.

Optionally, the remaining bits of the first bit sequence except 1 bit are used as the second partial bits to indicate the period of pattern1, or the period of pattern1 and the period of pattern2.

For example, if the first bit sequence is the bit sequence of the X bits of the PSBCH payload, the number of TDD patterns is indicated by 1 bit in the X bits, one of the uplink and downlink TDD configurations is indicated by X-1 bits, or two periods. When the number of TDD patterns is 1, the X-1 bit indicates one period in the uplink and downlink TDD configuration, i.e., the period of pattern 1; when the number of TDD patterns is 2, the X-1 bit indicates two periods in the uplink and downlink TDD configuration, i.e., the period of pattern1 and the period of pattern2.

Illustratively, when the number of TDD patterns is 1, the X-1 bit may be used to indicate one period of the period range {0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,3ms,4ms,5ms,10ms }, or when two selectable periods of 3ms and 4ms are not considered, the X-1 bit may be used to indicate one period of the period range {0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,5ms,10ms }. Specifically, the indication of one cycle may be performed using tables as shown in tables 1 and 2.

Wherein the period ranges shown in Table 1 are {0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,3ms,4ms,5ms,10ms }, one number (i.e., the index mentioned above) is indicated by the X-1 bit, i.e., one period, as follows:

TABLE 1

Numbering device	Period P (ms)
		0	0.5
1	0.625
		2	1
3	1.25
		4	2
5	2.5
		6	3
7	4
		8	5
9	10
		10～15	Reservation of

The period ranges shown in Table 2 are {0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,5ms,10ms }, with one number (i.e., the index mentioned above) indicated by the X-1 bit indicating one period, as follows:

TABLE 2

Numbering device	Period P (ms)
		0	0.5
1	0.625
		2	1
3	1.25
		4	2
5	2.5
		6	5
7	10
		8～15	Reservation of

The correspondence between the numbers and the periods in the tables 1 and 2 is not limited, and the actual period may be any one line, a few lines, all lines, or more lines of the table. Optionally, the value of X is 5.

Illustratively, when the number of TDD patterns is 2, the X-1 bit may be used to indicate a combination of two periods. In the NR Uu interface, if the number of TDD patterns in the uplink and downlink TDD configurations is 2, and the periods of two TDD patterns are Pms and P, respectively ₂ ms, then (P+P) ₂ ) It must be possible to divide the whole by 20ms, or 20 ms/(P+P) ₂ ) Is an integer. Under this condition, when two selectable periods of 3ms and 4ms are considered, there are 16 kinds of combinations of two periods, and when two selectable periods of 3ms and 4ms are not considered, there are 10 kinds of combinations of two periods. Specifically, the indication of one cycle may be performed using tables as shown in tables 3 and 4.

Wherein, two optional periods of 3ms and 4ms are considered in table 3, the first period and the second period correspond to the period of pattern1 and the period of pattern2 in the uplink and downlink TDD configuration, respectively, and the values of the first period and the second period are {0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,3ms,4ms,5ms,10ms }, so there are 16 period combinations, and one period combination is indicated by indicating one number (i.e. the index) through X-1 bits, as follows:

TABLE 3 Table 3

Two optional periods of 3ms and 4ms are not considered in table 4, the first period and the second period correspond to the period of pattern1 and the period of pattern2 in the uplink and downlink TDD configuration, respectively, and the values of the first period and the second period are {0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,5ms,10ms }, so there are 10 period combinations, and one number (i.e., the index) is indicated by X-1 bits, that is, one period combination is indicated as follows:

TABLE 4 Table 4

The correspondence between the numbers and the cycle combinations in tables 3 and 4 is not limited, and the cycle combinations actually used may be any one row, a few rows, all rows, or more rows of the table. Optionally, the value of X is 5.

Second embodiment:

the first bit sequence is used for indicating the period of the TDD pattern, the period of the TDD pattern is related to the number of the TDD pattern, for example, according to the indication content of the TDD-UL-DL-ConfigCommon cell in the 3GPP 38.331 V15.7.0 standard, the uplink and downlink TDD configuration only comprises pattern1, which indicates that the number of the TDD pattern is 1, and the period of the TDD pattern only comprises the period of pattern 1; the uplink and downlink TDD configurations include pattern1 and pattern2, which indicates that the number of TDD patterns is 2, and the period of the TDD patterns includes the period of pattern1 and the period of pattern 2.

In specific implementation, a period index table may be configured in the first terminal device and the second terminal device, and the first bit sequence is assigned according to an index corresponding to the period of the TDD pattern, so as to implement indication of the period of the TDD pattern.

Illustratively, one of the uplink and downlink TDD configurations, or, alternatively, two periods, may be indicated using the aforementioned X-bit sequence of PSBCH payload. When the number of TDD patterns is 1, the X bits indicate one period in the uplink and downlink TDD configuration, i.e., a period of pattern 1; when the number of TDD patterns is 2, the X bits indicate two periods in the uplink and downlink TDD configuration, a period of pattern1 and a period of pattern 2.

Illustratively, the X bits may be used to indicate one period, or two periods, of the period range {0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,3ms,4ms,5ms,10ms }; when two selectable periods of 3ms and 4ms are not considered, the X bit may be used to indicate one period, or two periods, of the period range {0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,5ms,10ms }.

For example, consider two alternative periods of 3ms and 4ms in Table 5, where the number of TDD patterns is 1, the total period in the table represents the period of pattern1, the first period represents the period of pattern1, and the second period is labeled "N/A" to indicate that pattern2 is absent under this condition; when the number of TDD patterns is 2, the total period in the table represents the sum of the period of pattern1 and the period of pattern2, the first period represents the period of pattern1, and the second period represents the period of pattern 2. The above values of the first period and the second period are {0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,3ms,4ms,5ms,10ms }, considering that the number of TDD patterns is 1, or 2 two cases coexist in 26 period combinations, one number (i.e., the index) is indicated by X bits, that is, one period combination is indicated as follows:

TABLE 5

For another example, where two alternative periods of 3ms and 4ms are not considered in Table 6, when the number of TDD patterns is 1, the total period in the table represents the period of pattern1, the first period represents the period of pattern1, and the second period may be labeled "N/A" to indicate that no period of pattern2 exists under this condition; when the number of TDD patterns is 2, the total period in the table represents the sum of the period of pattern1 and the period of pattern2, the first period represents the period of pattern1, and the second period represents the period of pattern 2. The values of the first period and the second period are {0.5ms,0.625ms,1ms,1.25ms,2ms,2.5ms,5ms,10ms }. Considering that the number of TDD patterns is 1 or 2, coexistence is combined in 18 periods, one number (i.e., the aforementioned index) is indicated by X bits, that is, one period combination is indicated, as follows:

TABLE 6

The correspondence between the numbers and the cycle combinations in the tables 5 and 6 is not limited, and the cycle combinations actually used may be any one row, a few rows, all rows, or more rows of the table. Optionally, the value of X is 5.

In an alternative embodiment, the indication information includes a second bit sequence, where the second bit sequence corresponds to the UL transmission time, and the specific indication manner may be performed with reference to the following four embodiments:

First embodiment:

when the number of TDD patterns included in the uplink and downlink TDD configurations is 1, the second bit sequence is used to indicate UL transmission time in the period of the TDD patterns.

Optionally, the second bit sequence is a binary representation of the number corresponding to the UL transmission time.

For easy understanding, the second bit sequence is a bit sequence of Y bits of the PSBCH payload, specifically the number of UL slots, including the number of UL slots in the UL transmission time

Is shown as an example. Referring to fig. 8, the present embodiments provide a first ULA schematic diagram of a transmission time indication. Wherein FIG. 8 illustrates the use of Y=7 bits for indicating +.>

Period p=10 ms, the number of UL slots in the period needs to be indicated as +.>

Y=7 bits in PSBCH payload may be in binary form of a value of 7, denoted 0000111.

Optionally, a portion of the bits of the second bit sequence are binary representations of the number corresponding to the UL transmission time.

For easy understanding, the second bit sequence is a bit sequence of Y bits of the PSBCH payload, and Y-1 bits in the second bit sequence are the number of UL slots

Is shown as an example. Exemplary, Y=7 bit is used to indicate +. >

Y-1 = 6 bits in PSBCH payload may be in binary form of a value of 7, denoted 000111.

Second embodiment:

when the number of the TDD patterns included in the uplink and downlink TDD configurations is N, the second bit sequence is used to indicate UL transmission time in a period of each of the N TDD patterns; wherein N is an integer greater than 1.

For easy understanding, taking the example that N is 2 and the UL transmission time includes the UL slot number, the second bit sequence is the bit sequence of the Y bits of the PSBCH payload, the second bit sequence may be used to indicate the two UL slot numbers corresponding to the two TDD patterns included in the uplink and downlink TDD configurations, which are respectively expressed as

And->

Alternatively, Y in the Y bits is used ₁ Bit indicates the number of UL slots corresponding to one TDD pattern contained in the uplink and downlink TDD configuration, using y ₂ The bit indicates the number of UL slots corresponding to another TDD pattern contained in the uplink and downlink TDD configurations, such as y ₁ The bits are

Is a binary representation of y ₂ Bit is->

Or otherwise; wherein y is ₁ Is an integer of 0 or more and Y or less, Y ₂ Is an integer of 0 or more and Y or less, y=y ₁ +y ₂ . Further alternatively, y is used ₁ Bit, or y ₂ The manner in which the bits indicate the number of UL slots corresponding to a single TDD pattern may be the same as the manner in which the Y bits indicate the number of UL slots corresponding to a single TDD pattern when the number of TDD patterns in the uplink and downlink TDD configurations is 1, and will not be described herein.

Exemplary, Y is 7, Y ₁ Is 3, y ₂ 4. Referring to fig. 9, the embodiment of the present application provides a schematic diagram of a second UL transmission time indication, and fig. 9 illustrates that two UL slot numbers corresponding to two TDD patterns in an uplink and downlink TDD configuration are indicated by using 3 bits and 4 bits, respectively

And->

The periods of two TDD patterns in the uplink and downlink TDD configurations are p=5 ms and P, respectively ₂ The number of two UL slots to be indicated in = 5ms,PSBCH payload is +.>

And

then 7 bits in the PSBCH payload can be divided into 3 bits to represent 100 and 4 bits to represent 0101; correspondingly, 7 bits in PSBCH payload may be denoted 1000101.

Third embodiment:

when the number of TDD patterns included in the uplink and downlink TDD configurations is N, the second bit sequence is used to indicate UL transmission time in a period of a preset specified TDD pattern in the N TDD patterns, where N is an integer greater than 1.

For ease of understanding, taking the example that N is 2 and the UL transmission time includes the UL slot number, the second bit sequence is the bit sequence of the Y bits of the PSBCH payload, the second bit sequence may be used to indicate the UL slot number corresponding to the first TDD pattern of the two TDD patterns included in the uplink and downlink TDD configurations

Alternatively, the second TDD pattern corresponds to two UL slots +.>

I.e. e.g. Y bit is +.>

Or->

Or otherwise. Further alternatively, the manner of using the Y bit to indicate the number of UL slots corresponding to a certain TDD pattern may be the same as the manner of using the Y bit to indicate the UL slots corresponding to a single TDD pattern when the number of TDD patterns in the uplink and downlink TDD configurations is 1, which is not described herein.

Exemplary, Y is 7, and Y bits are used to indicate the number of UL slots corresponding to the second TDD pattern in the uplink and downlink TDD configuration

Referring to FIG. 10, an embodiment of the present applicationA third UL transmission time indication is provided, where the periods of two TDD patterns in the uplink and downlink TDD configurations are p=5 ms and P, respectively ₂ The use of 7 bits to indicate the number of UL slots corresponding to the second TDD pattern +.>

The second TDD pattern to be indicated in PSBCH payload corresponds to the number of UL slots +. >

Then 7 bits in PSBCH payload can be represented as 0000101.

Fourth embodiment:

when the number of the TDD patterns included in the uplink and downlink TDD configurations is N, a first portion of bits in the second bit sequence is used to indicate a first TDD pattern of the N TDD patterns, and a second portion of bits in the second bit sequence is used to indicate UL transmission time in a period of the first TDD pattern; wherein N is an integer greater than 1.

The first TDD pattern may be any one of N TDD patterns. Optionally, the first TDD pattern is a TDD pattern with a maximum UL transmission time in a corresponding period of the N TDD patterns, that is, the UL transmission time in the period of the first TDD pattern is greater than the UL transmission time in the period of the second TDD pattern, and the second TDD pattern is any one TDD pattern except the first TDD pattern of the N TDD patterns.

For ease of understanding, taking the example that N is 2 and the UL transmission time includes the UL slot number, the second bit sequence is a bit sequence of Y bits of the PSBCH payload, a 1 bit in the second bit sequence may be used to indicate a first TDD pattern of two TDD patterns included in the uplink and downlink TDD configurations, where the first TDD pattern may be a first TDD pattern or a second TDD pattern of the two TDD patterns, and a Y-1 bit in the second bit sequence is used to indicate the UL slot number corresponding to the first TDD pattern.

Specifically, the 1-bit value may be set to 0, and the indicated first TDD pattern is the first TDD pattern, and the 1-bit value is 1, and the indicated first TDD pattern is the second TDD pattern. Further alternatively, the manner of using the Y-1 bit to indicate the number of UL slots corresponding to a certain TDD pattern may be the same as the manner of using the Y bit to indicate the UL slots corresponding to a single TDD pattern when the number of TDD patterns in the uplink and downlink TDD configurations is 1, such as, for example, the Y-1 bit is a binary representation of the number of UL slots corresponding to the first TDD pattern, or other manners, which are not described herein.

For example, Y is 7, and psbch payload is used to indicate the number of UL slots corresponding to the first of the two TDD patterns of the uplink and downlink TDD configuration, and the 1-bit value in the Y bits is 0. Referring to fig. 11, the embodiment of the present application provides a schematic diagram of a fourth UL transmission time indication, and fig. 11 illustrates that periods corresponding to two TDD patterns in an uplink and downlink TDD configuration are p=5 ms and P, respectively ₂ =5 ms, the remaining 6 of the 7 bits being used to indicate the number of UL slots corresponding to the first of the two TDD patterns in the uplink and downlink TDD configuration

The number of UL slots to be indicated in the PSBCH payload is

Then 7 bits in PSBCH payload can be represented as 0000101.

For example, Y is 7, and psbch payload is used to indicate the number of UL slots corresponding to the second TDD pattern of the two TDD patterns of the uplink and downlink TDD configuration, and the 1-bit value in the Y bits is 1. Referring to fig. 12, the embodiment of the present application provides a schematic diagram of a fifth UL transmission time indication, and fig. 12 illustrates that periods corresponding to two TDD patterns in an uplink and downlink TDD configuration are p=5 ms and P, respectively ₂ =5 ms, the remaining 6 of the 7 bits being used to indicate the number of UL slots corresponding to the second of the two TDD patterns in the uplink and downlink TDD configuration

The number of UL slots to be indicated in PSBCH payload is +.>

Then 7 bits in PSBCH payload may represent1000101.

Further, the UL transmission time indicated by the indication information may be a reference UL transmission time included in the uplink and downlink TDD configuration, or may be determined by adjusting the reference UL transmission time according to an actual communication parameter, where the reference UL transmission time includes the number of UL slots and/or the number of UL symbols in the uplink and downlink TDD configuration.

Wherein the communication parameters for determining UL transmission time include a subcarrier spacing SCS of S-SSB for carrying indication information and/or the number of bits in the indication information for indicating UL transmission time. Specifically, the UL transmission time indicated by the indication information may be determined with reference to the following optional embodiments:

In an alternative embodiment, the first UL transmission time may be determined according to a ratio of the subcarrier spacing SCS of the S-SSB to the reference SCS included in the uplink and downlink TDD configurations, where the first UL transmission time is a UL transmission time in a period of any one of the 1 or N TDD patterns.

Optionally, the subcarrier spacing SCS of the S-SSB is an SCS configured on a SL part Bandwidth (BWP).

For implementation convenience, the embodiment of the present application provides a manner of determining the first UL transmission time, taking the number of UL slots included in the first UL transmission time as an example, as follows:

wherein,,

indicating a number of UL slots included in the first UL transmission time;

Representing a downward rounding; u (u) _slots Indicating the number of reference UL slots included in the uplink and downlink TDD configurations, wherein the period to which the number of reference UL slots belongs is identical to the period to which the number of UL slots included in the first UL transmission time belongs; to->

SCS representing S-SSB to

Reference SCS, < ++I, indicating that the uplink and downlink TDD configuration contains>

Representing the ratio of the SCS of S-SSB to the reference SCS.

Exemplary, assume that the reference SCS indicated in RRC signaling is

，u _slots =2, period p=10 ms, SCS of s-SSB is +.>

Then->

Based on the above parameter settings, as shown in fig. 13, the embodiment of the present application provides a comparison schematic diagram of UL slot number, specifically illustrating a correspondence between the reference UL slot number in uplink and downlink TDD configuration and the UL slot number indicated by the information in PSBCH.

Exemplary, assume that the reference SCS in RRC signaling is

u _slots Period p=2.5 ms, SCS of s-SSB is +.>

Then->

Based on the above parameter settings, as shown in fig. 14, another comparison schematic diagram of UL slot number is provided in the embodiment of the present application, specifically illustrating the correspondence between the reference UL slot number in the uplink and downlink TDD configuration and the UL slot number indicated by the information in the PSBCH.

In another alternative embodiment, the first UL transmission time may be determined according to the result of comparing the subcarrier spacing SCS of the S-SSB with the SCS threshold. Wherein the SCS threshold is related to a number of bits for indicating a first UL transmission time, the first UL transmission time being a UL transmission time in a period of any one of 1 or N TDD patterns.

In practice, the SCS threshold may be determined as follows:

the number of TDD patterns contained in the uplink and downlink TDD configuration is 1, and Y in PSBCH payload is adopted ₂ The bit indicates the first UL transmission time, for example, according to the bit and Y ₂ Bit dependent function

Determining SCS threshold value; wherein "10" is the maximum value of the period of a single TDD pattern, Y ₂ Is a positive integer of Y or less. />

Illustratively, Y ₂ 7, then

SCS due to S-SSB is expressed as

The SCS of the S-SSB can be 15kHz, 30kHz, 60kHz, 120kHz or 240kHz, so Y ₂ When the SCS threshold value is 7, the SCS threshold value can be determined to be 7 according to 192kHz

I.e., 120kHz, the SCS of the S-SSB is less than or equal to the SCS threshold, i.e., the SCS equivalent to the S-SSB is less than or equal to Y ₂ Bit-dependent function->

Illustratively, Y ₂ 6 is then

SCS due to S-SSB is expressed as

The SCS of the S-SSB can be 15kHz, 30kHz, 60kHz, 120kHz or 240kHz, so Y ₂ When the SCS threshold value is 6, the SCS threshold value can be determined to be 6 according to 96kHz

I.e., 60kHz, the SCS of the S-SSB is less than or equal to the SCS threshold, i.e., the SCS equivalent to the S-SSB is less than or equal to Y ₂ Bit-dependent function->

Further, the above determination of the first UL transmission time according to the result of the comparison may be specifically implemented by any one of the following embodiments:

first embodiment:

(1) When the SCS of the S-SSB is smaller than or equal to the SCS threshold value, determining the first UL transmission time according to the ratio of the SCS of the S-SSB to the reference SCS contained in the uplink and downlink TDD configuration.

Wherein,,

indicating a number of UL slots included in the first UL transmission time;

SCS representing S-SSB to

Representing the ratio of the SCS of S-SSB to the reference SCS.

Illustratively, Y in PSBCH payload is employed ₂ Bits indicate the number of UL slots, Y ₂ At this time 7

The SCS threshold is 120kHz, assuming that the reference SCS indicated in the RRC signaling is

u _slots =2, period p=10 ms, SCS of s-SSB is +.>

If the condition that SCS is smaller than or equal to the threshold value of SCS is met, determining that the first UL transmission time is +_ according to the ratio of SCS of S-SSB to reference SCS contained in the uplink and downlink TDD configuration>

Illustratively, Y in PSBCH payload is employed ₂ Bits indicate the number of UL slots, Y ₂ 6 at this time

The SCS threshold is 60kHz, assuming that the reference SCS indicated in the RRC signaling is

u _slots =2, period p=10 ms, SCS of s-SSB is +.>

If the condition that SCS is smaller than or equal to the threshold value of SCS is met, determining that the first UL transmission time is +_ according to the ratio of SCS of S-SSB to reference SCS contained in the uplink and downlink TDD configuration >

(2) When the SCS of the S-SSB is larger than the SCS threshold, determining the first UL transmission time according to the ratio of the SCS threshold to the reference SCS contained in the uplink and downlink TDD configuration information.

For implementation, the embodiment of the application uses Y in PSBCH payload to include the number of UL slots at the first UL transmission time ₂ Bit indicates UL slot number as an example, SCS of S-SSB greater than SCS threshold is equivalent to SCS representing S-SSB

Is greater than->

Under such conditions, the ratio of SCS threshold to reference SCS can be used, i.e

The determining of the UL slot number may be specifically implemented by referring to the above manner of determining the UL slot number according to the ratio of SCS of S-SSB to the reference SCS, which is not described herein.

Illustratively, Y ₂ At this time 7

If SCS of S-SSB is

Greater than 120kHz, the number of UL slots is +.>

May be derived from SCS threshold 120 kHz.

Illustratively, Y ₂ 6. At this time

If SCS of S-SSB is

Above 60kHz, the number of UL slots is +.>

May be derived from SCS threshold 60 kHz.

Second embodiment:

when the SCS of the S-SSB is larger than the SCS threshold value, determining a second UL transmission time according to the ratio of the SCS of the S-SSB to a reference SCS contained in the uplink and downlink TDD configuration information; and when the second UL transmission time is greater than the time threshold, determining the first UL transmission time according to the time threshold, or when the second UL transmission time is less than or equal to the time threshold, determining the first UL transmission time according to the second UL transmission time. Wherein the time threshold is a maximum UL transmission time that a bit indicating the first UL transmission time can indicate.

In particular implementations, Y in PSBCH payload is employed with a first UL transmission time including the number of UL slots ₂ Bit indicates UL slot number as an example, SCS of S-SSB greater than SCS threshold is equivalent to SCS representing S-SSB

Is greater than->

Under this condition, if the number of UL slots is determined from SCS of S-SSB, +.>

Using Y ₂ Bits indicate the aforementioned UL slot number +.>

May not be sufficient, then optionally, Y in PSBCH payload is used ₂ The number of UL slots indicated by the bits is +.>

Represents Y ₂ The maximum UL slot number that a bit can indicate.

Illustratively, Y ₂ 7. At this time

The above procedure may be further described as: if SCS of S-SSB is +.>

Greater than 120kHz, & gt>

It is still possible to determine this according to the SCS of the S-SSB, but under this condition if +.>

The number of UL slots indicated in the PSBCH payload is

If->

The UL slot number indicated in PSBCH payload is +>

Illustratively, Y ₂ 4. At this time

The above procedure may be further described as: if SCS of S-SSB is +.>

Greater than 15kHz, & gt>

And may still be determined from the SCS of the S-SSB. But under this condition if +.>

The number of UL slots indicated in the PSBCH payload is

If->

The UL slot number indicated in PSBCH payload is +>

Illustratively, Y ₂ 3. At this time

The above procedure may be further described as: SCS if S-SSB +.>

15kHz or more, < > and >>

And may still be determined from the SCS of the S-SSB. Under this condition, if->

The number of UL slots indicated in the PSBCH payload is

If->

The number of UL slots indicated in the PSBCH payload is

Third embodiment:

when the SCS of the S-SSB is larger than the SCS threshold value, obtaining a second UL transmission time according to the ratio of the SCS of the S-SSB to a reference SCS contained in the uplink and downlink TDD configuration; reducing the second UL transmission time according to a preset step length; and determining the first UL transmission time according to the reduced second UL transmission time.

In particular implementations, Y in PSBCH payload is employed with a first UL transmission time including the number of UL slots ₂ Bit indicates UL slot number as an exampleSCS of S-SSB greater than SCS threshold is equivalent to SCS representing S-SSB

Is greater than->

Using Y ₂ Bits indicate the aforementioned UL slot number +.>

Wherein (1)>

Indicating a downward rounding, Z indicates the aforementioned preset step size, Z is a positive integer greater than or equal to 1, and Z is used to indicate that the single UL slot indicated in the PSBCH payload actually represents Z UL slots. Z may be a standard predefined value or a value determined from SCS of S-SSB.

Illustratively, Y ₂ 6. At this time

The above procedure may be further described as: if SCS of S-SSB is +.>

Greater than 60kHz, & gt>

And may still be determined from the SCS of the S-SSB. If the standard predefines z=2, it means that the single UL slot indicated in PSBCH payload actually represents 2 UL slots. Under this condition, the number of UL slots indicated in PSBCH payload is +.>

For example, a->

The UL slot number indicated in PSBCH payload is 37.

In the above example provided by the embodiment of the present application, the W bits of the PSBCH payload are used to indicate the period information and the UL slot number, specifically, the X bits of the W bits are used to indicate the period information, the Y bits of the W bits are used to indicate the UL slot number, and optionally, W is 12, X is 5, and Y is 7, which simplifies the bit number required for indicating the uplink and downlink TDD configuration. The limited bits in PSBCH payload reflect uplink and downlink TDD configuration of Uu interface, so that the problem that DL time slot is used when terminal equipment performs SL transmission to interfere DL transmission of Uu interface is avoided, and signaling overhead between terminal equipment is greatly saved compared with direct uplink and downlink TDD configuration. For example, when the uplink and downlink TDD configuration includes one TDD pattern, the minimum signaling overhead required for directly transmitting the uplink and downlink TDD configuration is 28 bits, where 3 bits indicate the reference SCS,3 bits indicate the period, 7 bits indicate the number of downlink slots, 4 bits indicate the number of downlink symbols, 7 bits indicate the number of uplink slots, and 4 bits indicate the uplink symbols; when the uplink and downlink TDD configuration includes two TDD patterns, the minimum signaling overhead required for directly transmitting the uplink and downlink TDD configuration is 53 bits, where 3 bits indicate a reference SCS,6 bits indicate a period, 14 bits indicate the number of downlink slots, 8 bits indicate the number of downlink symbols, 14 bits indicate the number of uplink slots, and 8 bits indicate the number of uplink symbols.

In addition, the indication method provided by the embodiment of the present application is not limited to use in PSBCH payload, and when the transmitting UE needs to indicate the uplink and downlink TDD configuration finer in the Uu interface to the receiving UE through PC5 RRC signaling, a similar indication method may also be used in PC5 RRC signaling.

Further, referring to fig. 15, another method for indicating configuration information is provided in the embodiment of the present application, where the method is applied to a second terminal device, and includes:

in step S1501, indication information from the first terminal device is received, where the indication information is carried in a physical layer side uplink broadcast channel PSBCH of the side uplink synchronization signal block S-SSB, and the indication information is used to indicate period information included in the uplink and downlink time division duplex TDD configuration received by the first terminal device.

In the implementation, the second terminal device may directly receive the indication information sent by the first terminal device, or indirectly obtain the indication information sent by the first terminal device through a forwarding mechanism of the intermediate device; in addition, the second terminal device can also serve as an intermediate device to forward the received indication information to other terminal devices.

In an alternative embodiment, the indication information is further used to indicate UL transmission time in the period of the TDD pattern; the second terminal equipment performs SL transmission in the UL transmission time when determining the UL transmission time by analyzing the indication information, so that interference caused by the fact that the SL transmission occupies the DL transmission time is avoided; wherein the UL transmission time includes a UL slot number and/or a UL symbol number.

In an alternative embodiment, the indication information may be carried in particular in the payload (payload) of the PSBCH of the side-uplink synchronization signal block S-SSB. In particular, the indication information may be carried by a part of bits of the PSBCH payload, such as W bits of the PSBCH payload, in which X bits are used to indicate the period information and Y bits are used to indicate the UL transmission time, where W is an integer greater than or equal to 0, X is an integer greater than or equal to 0 and less than or equal to W, and Y is an integer greater than or equal to 0 and less than or equal to W.

In an alternative embodiment, the period information includes: the number of TDD patterns and/or the period of TDD patterns; wherein the number of TDD patterns is one or more, and the period of the TDD pattern includes a period of each of the one or more TDD patterns.

The indication information includes a first bit sequence, where the first bit sequence corresponds to the period information, and specifically the indication may be performed by two embodiments as follows:

in an alternative embodiment, the first bit sequence is used to indicate a period of the TDD pattern; in another alternative embodiment, a first portion of bits in the first bit sequence is used to indicate the number of TDD patterns and a second portion of bits in the first bit sequence is used to indicate the period of the TDD patterns. The specific indication method may refer to the foregoing embodiment executed on the first terminal device side, and will not be described herein.

The indication information includes a second bit sequence, where the second bit sequence corresponds to the UL transmission time, and specifically may be indicated by any one of the following four embodiments:

first embodiment: when the number of TDD patterns included in the uplink and downlink TDD configurations is 1, the second bit sequence is used to indicate UL transmission time in the period of the TDD patterns.

Second embodiment: when the number of the TDD patterns included in the uplink and downlink TDD configurations is N, the second bit sequence is used to indicate UL transmission time in a period of each of the N TDD patterns; wherein N is an integer greater than 1.

Third embodiment: when the number of TDD patterns included in the uplink and downlink TDD configurations is N, the second bit sequence is used to indicate UL transmission time in a period of a preset specified TDD pattern in the N TDD patterns, where N is an integer greater than 1.

Fourth embodiment: when the number of the TDD patterns included in the uplink and downlink TDD configurations is N, a first portion of bits in the second bit sequence is used to indicate a first TDD pattern of the N TDD patterns, and a second portion of bits in the second bit sequence is used to indicate UL transmission time in a period of the first TDD pattern; optionally, the UL transmission time in the period of the first TDD pattern is greater than the UL transmission time in the period of the second TDD pattern, and the second TDD pattern is any one of the N TDD patterns except the first TDD pattern.

The specific indication methods of the above four embodiments may refer to the embodiments executed on the first terminal device side, and will not be described herein again.

In an alternative embodiment, the UL transmission time in the period of any one of the N TDD patterns is determined based on the ratio of the subcarrier spacing SCS of the S-SSB to the reference SCS included in the uplink and downlink TDD configurations.

In an alternative embodiment, the UL transmission time in the period of any one of the N TDD patterns is determined according to a comparison result between the subcarrier spacing SCS of the S-SSB and an SCS threshold value, the SCS threshold value being related to a first number of bits, the first number of bits being a number of bits for indicating the UL transmission time in the period of any one of the TDD patterns.

Further, referring to fig. 16, an embodiment of the present application provides an indicating device 1600 for configuration information, including:

a receiving module 1601, configured to receive an uplink and downlink TDD configuration from a network device;

the sending module 1602 is configured to send, to the second terminal device, indication information according to the uplink and downlink TDD configuration, where the indication information is carried in a physical layer side uplink broadcast channel PSBCH of the side uplink synchronization signal block S-SSB, and the indication information is used to indicate period information included in the uplink and downlink TDD configuration.

In an alternative embodiment, the period information includes: the number of TDD patterns and/or the period of the TDD patterns.

In an alternative embodiment, the indication information is also used to indicate UL transmission time in the period of the TDD pattern.

In an alternative embodiment, the indication information includes a first bit sequence, where the first bit sequence is used to indicate a period of the TDD pattern.

In an alternative embodiment, the indication information includes a first bit sequence, a first part of bits in the first bit sequence is used for indicating the number of TDD patterns, and a second part of bits in the first bit sequence is used for indicating the period of the TDD patterns.

In an alternative embodiment, the indication information includes a second bit sequence;

When the number of TDD patterns included in the uplink and downlink TDD configurations is N, a first portion of bits in the second bit sequence is used to indicate a first TDD pattern of the N TDD patterns, and a second portion of bits in the second bit sequence is used to indicate UL transmission time in a period of the first TDD pattern.

In an alternative embodiment, the UL transmission time in the period of the first TDD pattern is greater than the UL transmission time in the period of the second TDD pattern, which is any one of the N TDD patterns except the first TDD pattern.

In an alternative embodiment, an indicating device 1600 for configuration information further includes:

a processing module 1603, configured to determine a first UL transmission time according to a ratio of a subcarrier spacing SCS of the S-SSB to a reference SCS included in the uplink and downlink TDD configuration, where the first UL transmission time is a UL transmission time in a period of any one of the N TDD patterns.

In another alternative embodiment, an indicating device 1600 for configuration information further includes:

a processing module 1603 for comparing the subcarrier spacing SCS of the S-SSB with an SCS threshold; wherein the SCS threshold is related to a number of bits for indicating a first UL transmission time, the first UL transmission time being a UL transmission time in a period of any one of the N TDD patterns; and determining the first UL transmission time according to the comparison result.

In an alternative embodiment, the processing module 1603 is further configured to:

when the SCS of the S-SSB is smaller than or equal to the SCS threshold value, determining a first UL transmission time according to the ratio of the SCS of the S-SSB to a reference SCS contained in the uplink and downlink TDD configuration; or,

when the SCS of the S-SSB is larger than the SCS threshold, determining the first UL transmission time according to the ratio of the SCS threshold to the reference SCS contained in the uplink and downlink TDD configuration information.

when the second UL transmission time is greater than the time threshold, determining the first UL transmission time according to the time threshold, or,

when the second UL transmission time is less than or equal to the time threshold, determining a first UL transmission time according to the second UL transmission time;

wherein the time threshold is a maximum UL transmission time that a bit indicating the first UL transmission time can indicate.

Reducing the second UL transmission time according to a preset step length;

Further, referring to fig. 17, the embodiment of the present application further provides an indication device 1700 of configuration information, where the device 1700 includes:

a receiving module 1701, configured to receive indication information from the first terminal device, where the indication information is carried in a physical layer side uplink broadcast channel PSBCH of the side uplink synchronization signal block S-SSB, and the indication information is used to indicate period information included in uplink and downlink time division duplex TDD configuration received by the first terminal device.

Based on the same concept, as shown in fig. 18, a communication device 1800 is provided for the present application. The communication device 1800 may be, for example, a chip or a system-on-chip. Alternatively, the chip system in the embodiments of the present application may be formed by a chip, and may also include a chip and other discrete devices.

The communications apparatus 1800 can include at least one processor 1810 and the apparatus 1800 can also include at least one memory 1820 for storing computer programs, program instructions, and/or data. The memory 1820 is coupled to the processor 1810. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. The processor 1810 may operate in conjunction with the memory 1820. The processor 1810 may execute computer programs stored in the memory 1820. Optionally, at least one of the at least one memory 1820 may be included in the processor 1810.

A transceiver 1830 may also be included in the communication device 1800, and the communication device 1800 may communicate information via the transceiver 1830 and other devices. The transceiver 1830 may be a circuit, bus, transceiver, or any other device that may be used to interact with information.

In a possible implementation manner, the communication apparatus 1800 may be applied to a first terminal device, and the specific communication apparatus 1800 may be the first terminal device, or may be an apparatus capable of supporting the first terminal device, and implementing the function of the first terminal device in any of the foregoing embodiments. The memory 1820 holds the necessary computer programs, program instructions and/or data to implement the functions of the first terminal device in any of the embodiments described above. The processor 1810 may execute the computer program stored in the memory 1820 to perform the method performed by the first terminal device in any of the embodiments described above.

In a possible implementation manner, the communication apparatus 1800 may be applied to the second terminal device, and the specific communication apparatus 1800 may be the second terminal device, or may be an apparatus capable of supporting the second terminal device, and implementing the function of the second terminal device in any of the foregoing embodiments. The memory 1820 holds the necessary computer programs, program instructions and/or data to implement the functions of the second terminal device in any of the embodiments described above. The processor 1810 may execute the computer program stored in the memory 1820 to perform the method performed by the second terminal device in any of the embodiments described above.

In a possible implementation manner, the communication apparatus 1800 may be applied to a network device, and the specific communication apparatus 1800 may be a network device, or may be an apparatus capable of supporting the network device to implement the functions of the network device in any of the foregoing embodiments. The memory 1820 holds the necessary computer programs, program instructions and/or data to implement the functions of the network device in any of the embodiments described above. The processor 1810 may execute a computer program stored in the memory 1820 to perform a method performed by a network device in any of the embodiments described above.

The specific connection medium between the transceiver 1830, the processor 1810 and the memory 1820 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 1820, the processor 1810 and the transceiver 1830 are connected by a bus, which is shown by a thick line in fig. 18, and the connection between other components is merely illustrative, but not limited to. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 18, but not only one bus or one type of bus.

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

In the embodiment of the present application, the memory may be a nonvolatile memory, such as a hard disk (HDD) or a Solid State Drive (SSD), or may be a volatile memory (volatile memory), for example, a random-access memory (RAM). The memory may also be any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of implementing a storage function, for storing a computer program, program instructions and/or data.

Based on the above embodiments, referring to fig. 19, another communication apparatus 1900 is provided in an embodiment of the present application, including: interface circuitry 1910 and a processor 1920;

interface circuitry 1910 for receiving code instructions and transmitting to said processor;

a processor 1920, configured to execute the code instructions to perform a method performed by the first terminal device in any of the embodiments described above or a method performed by the second terminal device in any of the embodiments described above.

Based on the above embodiments, the embodiments of the present application further provide a readable storage medium storing instructions that, when executed, cause a method performed by a first terminal device in any of the above embodiments to be implemented, or cause a method performed by a second terminal device in any of the above embodiments to be implemented. The readable storage medium may include: various media capable of storing program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to encompass such modifications and variations.

Claims

1. A method for indicating configuration information, comprising:

according to the uplink and downlink TDD configuration, sending indication information to a second terminal device, wherein the indication information is used for indicating period information contained in the uplink and downlink TDD configuration, and the period information comprises the number of TDD patterns and a TDD pattern period;

the indication information is a 12-bit sequence, the bit sequence includes a first bit sequence and a second bit sequence, a first part of bits in the first bit sequence indicates that the number of TDD patterns is 2, a second part of bits in the first bit sequence is used for indicating the TDD pattern period of each TDD pattern in the 2 TDD patterns, the second bit sequence indicates UL transmission time in each TDD pattern period, wherein,

the first portion of bits of the first bit sequence is 1 bit, the second portion of bits of the first bit sequence is 4 bits, and the second bit sequence is 7 bits.

2. The method of claim 1, wherein,

the TDD patterns are pattern 1 and pattern 2, and the second portion of bits in the first bit sequence indicates the TDD pattern periods of the pattern 1 and pattern 2 using the following table:

Wherein the first period P and the second period P ₂ The TDD pattern periods of the pattern 1 and the pattern 2, respectively, the numbers being a first period P and a second period P ₂ Corresponding indexes are set in the period of the first bit sequence, and the second part of bits in the first bit sequence are used for indicating the number.

3. The method of claim 1 or 2, wherein,

the first partial bit value of 1 indicates that the number of TDD patterns is two.

4. A method according to any one of claim 1 to 3, wherein,

the second bit sequence is used for indicating the number of time slots corresponding to the UL transmission time in each TDD pattern period.

5. The method of any one of claim 1 to 4, wherein,

the indication information is carried in the physical layer side uplink broadcast channel PSBCH of the side uplink synchronization signal block S-SSB.

6. The method of claim 5, wherein the method further comprises: determining UL transmission time in the TDD pattern period;

the determining the UL transmission time in the TDD pattern period includes: and determining the UL transmission time in the TDD pattern period according to the ratio of the subcarrier spacing SCS of the S-SSB to the reference SCS contained in the uplink and downlink TDD configuration.

7. The method of claim 6, wherein,

the subcarrier spacing SCS of the S-SSB is an SCS configured on the side-uplink partial bandwidth BWP.

8. An indication device for configuration information, comprising:

a sending module, configured to send, according to the uplink and downlink TDD configurations, indication information to a second terminal device, where the indication information is used to indicate period information included in the uplink and downlink TDD configurations, where the period information includes the number of TDD patterns and a TDD pattern period;

9. The apparatus of claim 8, wherein,

10. The apparatus according to any one of claim 8 or 9, wherein,

11. The apparatus according to any one of claims 8 to 10, wherein,

12. The apparatus according to any one of claims 8 to 11, wherein,

13. The apparatus of claim 12, wherein the apparatus further comprises: a processing module, configured to determine UL transmission time in the TDD pattern period;

14. The apparatus of claim 13, wherein the device comprises a plurality of sensors,

15. A communication device comprising a processor and a memory, the memory storing a program running on the processor, the processor implementing the method of any one of claims 1-7 when executing the program.

16. A communication device, comprising: a processor and interface circuit;

the processor for executing the code instructions to perform the method of any of claims 1-7.

17. A computer readable storage medium storing instructions which, when executed, cause the method of any one of claims 1-7 to be implemented.