CN117042105A

CN117042105A - Synchronization signal determining method, resource selecting and reserving method, device, terminal and storage medium

Info

Publication number: CN117042105A
Application number: CN202210475113.1A
Authority: CN
Inventors: 杨聿铭; 纪子超; 刘思綦
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2023-11-10
Also published as: WO2023208213A1

Abstract

The application discloses a synchronous signal determining method, a resource selecting and reserving method, a device, a terminal and a storage medium, belonging to the field of communication, wherein the synchronous signal determining method comprises the following steps: the first terminal receives and/or transmits a first synchronization signal, and the first synchronization signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal.

Description

Synchronization signal determining method, resource selecting and reserving method, device, terminal and storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a synchronous signal determining method, a resource selecting and reserving method, a device, a terminal and a storage medium.

Background

Currently, long term evolution (Long Term Evolution, LTE) Sidelink (Sidelink) is provided with a dedicated frequency band. Because the design of the LTE Sidelink UE and the New Radio (NR) Sidelink UE is greatly different, the NR Sidelink UE cannot directly access the dedicated frequency band of the LTE Sidelink UE to perform communication. However, the number of NR sip UEs increases gradually, and the number of LTE sip UEs decreases gradually, so that the utilization rate of the dedicated frequency band of LTE sip UEs decreases, and therefore, how to make NR sip UEs coexist with LTE sip UEs on the dedicated frequency band of LTE sip UEs is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a synchronization signal determining method, which can solve the problem that NR Sidelink UE cannot coexist with LTE Sidelink UE on a dedicated frequency band of the LTE Sidelink UE.

In a first aspect, a synchronization signal determining method is provided, applied to a terminal, and the method includes: the first terminal receives and/or transmits a first synchronization signal, and the first synchronization signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal.

In a second aspect, there is provided a synchronization signal determining apparatus including: a processing module; the processing module is used for receiving and/or transmitting a first synchronous signal, and the first synchronous signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal.

In a third aspect, a method for selecting and reserving resources is provided, and the method is applied to a terminal, and includes: the first terminal selects resources on a first resource pool or a first frequency band; and/or sending the second information to reserve resources.

In a fourth aspect, there is provided a resource selection and reservation apparatus, the apparatus comprising: a processing module; the processing module is used for selecting resources on the first resource pool or the first frequency band; and/or sending the second information to reserve resources.

In a fifth aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to receive and/or send a first synchronization signal, where the first synchronization signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal.

In a seventh aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method according to the third aspect.

An eighth aspect provides a terminal, including a processor and a communication interface, where the processor is configured to perform resource selection on a first resource pool or a first frequency band; and/or sending the second information to reserve resources.

In a ninth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect or performs the steps of the method according to the third aspect.

In a tenth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being for running a program or instructions to implement the method according to the first aspect or to implement the method according to the third aspect.

In an eleventh aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the method as described in the first aspect, or to implement the method as described in the third aspect.

In the embodiment of the application, a first terminal receives and/or transmits a first synchronization signal, and the first synchronization signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal. The first terminal can determine the first synchronization signal according to the first information, wherein the first information comprises the frequency of the first synchronization signal, the relation between the first synchronization information and the second synchronization signal, and the first synchronization signal is located in the resource determined by the resource related information of the second synchronization signal.

Drawings

Fig. 1 is a schematic diagram of data transmission between terminals through a sip link according to an embodiment of the present application

Fig. 2 is a flowchart of a resource detection and resource selection/reselection procedure performed by a terminal according to an embodiment of the present application;

Fig. 3 is a schematic diagram of a synchronization signal determining method according to an embodiment of the present application;

fig. 4 is a schematic diagram of a synchronization signal configuration method according to an embodiment of the present application;

fig. 5 is a schematic diagram of a resource selection and reservation method according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a synchronization signal determining apparatus according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a resource selecting and reserving apparatus according to an embodiment of the present application;

fig. 8 is a schematic hardware structure of a communication device according to an embodiment of the present application;

fig. 9 is a schematic hardware structure of a terminal according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application"often used interchangeably, the described techniques may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

The following explains some concepts and/or terms related to the synchronization signal determining method, the resource selecting and reserving method, the device, the terminal and the storage medium provided by the embodiments of the present application.

1. Car networking V2X

LTE systems support sidlink (which may be interpreted as a Sidelink, etc.) transmission, i.e., data transmission between terminals may be performed directly on the physical layer. LTE sip is broadcast based, and although available to support basic security class communications for internet of vehicles (vehicle to everything, V2X), is not applicable to other higher-level V2X services. Whereas a 5G NR system will support more advanced sip transmission designs, such as unicast, multicast or multicast, etc., so that a more comprehensive service type can be supported. Currently, the LTE system supports sidlink from release 12, and is used for direct data transmission between terminals without passing through network devices.

Fig. 1 shows a schematic diagram of data transmission between terminals through a sidlink.

2. NR Sidelink resource allocation

At present, two resource allocation modes are defined by NR V2X, one is mode1, and mode1 schedules resources for a base station; another is mode1, mode1 determines the resources for the UE to transmit on its own, in which case the resource information may be from a broadcast message or preconfigured information from the base station. The resource allocation mode of mode1 and/or mode2 may be used if the UE is operating within the range of the base station and has an RRC connection with the base station, and only the resource allocation mode of mode2 may be used if the UE is operating within the range of the base station but has no RRC connection with the base station. If the UE is out of the range of the base station, only a mode2 resource allocation mode can be used, and V2X transmission is carried out according to the preconfigured information.

For the above mentioned mode 2, the specific operation is as follows: 1. after the resource selection is triggered, the TX UE first determines a resource selection window, where the lower boundary of the resource selection window is at T1 time after the triggering of the resource selection, the upper boundary of the resource selection is at T2 time after the triggering, T2 is a value selected by the UE in a packet delay budget (packet delay budget, PDB) of its TB transmission, and T2 is not earlier than T1. 2. Before the UE performs resource selection, an alternative set of resources for resource selection needs to be determined (candidate resource set), and the reference signal received power (Reference Signal Receiving Power, RSRP) measured on the resources within the resource selection window is compared with a corresponding RSRP threshold (threshold), and if RSRP is lower than RSRP threshold, the resources may be included in the alternative set of resources. 3. After the resource set is determined, the UE randomly selects transmission resources among the candidate resource sets. In addition, the UE may reserve transmission resources for the next transmission at this time of transmission. Fig. 2 shows a flow chart of a process of detecting resources and selecting/reselecting resources by a terminal.

3. Periodic configuration

In NR V2X, if the resource pool supports periodic configuration, the period value of supportable configuration in the resource pool is 0, [1:99],100, 200, 300, 400, 500, 600, 700, 800, 900, 1000ms. The RRC may configure a maximum of 16 values from among the selectable period values, including a period configuration of 0ms.

In LTE V2X, the optional period values are 20, 50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000ms.

3. LTE time slot conversion

The slot transition rule of LTE is P' _{rsvp_TX} ＝P _step ×P _{rsvp_TX} 100, where P _{rsvp_TX} Reservation period value, P, of high-level indication _step Is an intermediate value, as shown in Table 1, P' _{rsvp_TX} Is the number of logical slots corresponding to the reservation period.

Table 1: p of sidelink transmission mode 3 and transmission mode 4 _step Is of the (a) determination mode

4. NR slot conversion

Wherein T' _max Is the number of slots belonging to the resource pool.

At present, the communication of the LTE Sidelink can be provided with a dedicated frequency band, however, because the design of the LTE Sidelink UE and the design of the NR Sidelink UE have great differences, the current NR Sidelink UE cannot directly access the dedicated frequency band of the LTE Sidelink for communication. As the number of LTE sip UEs becomes smaller and larger, the frequency band utilization divided for the LTE sip UEs decreases, so it is necessary to design some methods so that the NR sip UEs can coexist with the LTE sip UEs in these frequency bands.

LTE and NR sidlink have different designs for synchronization signals and synchronization flows, respectively. The synchronization of LTE Sidelink is based on a primary synchronization signal PSSS and a secondary synchronization signal SSSS, with a signal period of 160ms. While synchronization of NR sidlink is based on SSB, SSB can be repeatedly transmitted in a period of 160ms. Because the two signal designs are completely different and independently configured, when determining the resource pool, the resource pool obtained based on the LTE standard and the NR standard may not be consistent after excluding the slot in which the synchronization signal is located (i.e., problem 1).

When the UE selects the resources, the reserved resources of other terminals are determined according to the conversion rules of the logical time slot and the physical time slot according to the indication of the control information, and if the UE does not make the specification under the background that the time slot conversion rules of the LTE are different from the time slot conversion rules of the NR, the UE can have different understanding on the reserved resources of other UEs to perform wrong resource elimination, thereby influencing the transmission reliability. For example, for an LTE terminal, only the period reservation information is carried on the LTE SCI, and the corresponding position of the reservation period is determined according to the slot conversion rule of LTE. For the NR terminal, if the LTE SCI is detected, when determining a specific resource location corresponding to a reservation period indicated by the LTE SCI, the specific resource location must be determined according to an LTE rule, or an incorrect location may be obtained, which may not only avoid resource collision, but also exclude resources with better transmission quality.

In addition, for a terminal that simultaneously transmits an LTE SCI and an NR SCI or a terminal that simultaneously has an LTE module and an NR module, in order to simultaneously enable other LTE terminals and NR terminals to obtain their own resource reservation information, in the context of using different LTE slot conversion rules and NR slot conversion rules, it is necessary to solve the problem how to use the LTE slot conversion rules and NR slot conversion rules to indicate different reservation period values so that when resource reservation information of a terminal is detected by two types of terminals, only correct reserved resources can be obtained.

Meanwhile, for the NR terminal with the LTE module, the resource conflict of the LTE can be handed to the LTE module for solving. For example, the LTE module is responsible for detecting the LTE SCI and determining the resource location indicated by the LTE SCI, so that the NR terminal can obtain the correct resource reservation location. However, how the NR terminal determines the reserved resource location information using the LTE module in the resource selection process is not standardized. (i.e., problem 2)

The terminal (UE) provided by the embodiment of the present application may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm Computer, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet Device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or furniture), a game console, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, where the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that, the embodiment of the present application is not limited to a specific type of terminal. The method for determining the synchronization signal provided by the embodiment of the application is described in detail below through some embodiments and application scenarios thereof with reference to the accompanying drawings.

Example 1

An embodiment of the present application provides a method for determining a synchronization signal, and fig. 3 shows a flowchart of the method for determining a synchronization signal provided by the embodiment of the present application. As shown in fig. 3, the method for determining a synchronization signal according to the embodiment of the present application may include the following step 201.

Step 201, the first terminal receives and/or transmits a first synchronization signal.

In the embodiment of the present application, the first synchronization signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal.

Alternatively, in the embodiment of the present application, the first terminal may be an NR terminal, and the second terminal may be an LTE terminal, or vice versa. The first terminal and the second terminal may be both NR terminals or both LTE terminals. Of course, the first terminal and the second terminal may be other types of terminals.

It should be noted that, in the embodiment of the present application, the first terminal is taken as an NR terminal, the second terminal is taken as an LTE terminal, and in the case that the first terminal and the second terminal are other types of terminals, the method is also within the protection scope of the method for determining a synchronization signal provided in the embodiment of the present application.

Alternatively, in the embodiment of the present application, the first synchronization signal is a synchronization signal of the first terminal (for example, an NR sync signal of an NR terminal: SSB), or is a synchronization signal of an NR module of the first terminal (NR sync signal); the second synchronization signal may be a synchronization signal of the second terminal (e.g., LTE sync signals of LTE terminals: PSSS and SSSS), or a synchronization signal of an LTE module of the first terminal (LTE sync signal).

It should be noted that, the first synchronization signal may be the first synchronization signal, or a resource of the first synchronization signal.

In the embodiment of the application, a first terminal determines resources of a first synchronization signal according to first information, wherein the first information comprises: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal.

Optionally, in an embodiment of the present application, the first information may be at least one of the following a to j:

a. the first information is that only one first synchronous signal resource is provided in each period

Alternatively, in the embodiment of the present application, in the case where the first information is only one of the first synchronization signal resources in each period, the first synchronization signal may be aligned with the second synchronization signal.

b. The first information is that there is no first synchronization signal resource on the first frequency band

Optionally, in the embodiment of the present application, when the first information is that the first synchronization signal resource does not exist on the first frequency band, the first terminal does not send the SSB on the coexistence frequency band with other terminals (for example, the second terminal), or the configuration/pre-configuration does not include the SSB resource.

Optionally, in an embodiment of the present application, the first information includes a relationship between a first synchronization signal and a second synchronization signal; the relationship of the first synchronization signal and the second synchronization signal includes at least one of:

the resource of the first synchronization signal and the resource of the second synchronization signal are frequency division multiplexed FDM;

the offset of the resource of the first synchronous signal relative to the first reference point is the same as the offset of the resource of the second synchronous signal relative to the second reference point, and the first reference point and the second reference point are the same or different;

the starting position of the resource of the first synchronous signal is the same as the starting position of the resource of the second synchronous signal;

The end position of the resources of the first synchronization signal is the same as the end position of the resources of the second synchronization signal.

c. The first information is the relation between the first synchronous signal and the second synchronous signal

Optionally, in the embodiment of the present application, the position or the relative offset of the resource of the first synchronization signal in one synchronization period is the same as the position or the relative offset of the resource of the second synchronization signal in one synchronization period, that is, the start point alignment or the end point alignment of the resource of the synchronization signal.

d. The first information is the relation between the first synchronous signal and the second synchronous signal

Optionally, in the embodiment of the present application, an offset of a resource of a first synchronization signal of the first synchronization signal with respect to a first reference point is the same as an offset of a resource of a second synchronization signal with respect to a second reference point, where the first reference point and the second reference point are the same or different.

It should be noted that the first reference point and/or the second reference point are predefined by a protocol/network pre-configuration/network configuration/terminal pre-configuration/terminal configuration.

e. The first information is the relation between the first synchronous signal and the second synchronous signal

Optionally, in the embodiment of the present application, a starting position of a resource of the first synchronization signal is the same as a starting position of a resource of the second synchronization signal.

f. The first information is the relation between the first synchronous signal and the second synchronous signal

Optionally, in the embodiment of the present application, the end position of the resource of the first synchronization signal is the same as the end position of the resource of the second synchronization signal.

g. The first information is the relation between the first synchronous signal and the second synchronous signal

Optionally, in the embodiment of the present application, the first terminal may frequency division multiplex FDM the resource of the first synchronization signal and the resource of the second synchronization signal, that is, allocate the resource of the first synchronization signal and the resource of the second synchronization signal in the same time unit, or allocate the resource of the first synchronization signal and the resource of the second synchronization signal in at least partially overlapping time units.

Optionally, in an embodiment of the present application, the resource of the first synchronization signal and the resource FDM of the second synchronization signal include at least one of the following:

the resource of the first synchronization signal of the first terminal and the resource of the second synchronization signal of the second terminal are located in the same time unit or at least partially overlapped time units;

the resource of the first synchronization signal of the NR module of the first terminal and the resource of the second synchronization signal of the LTE module of the first terminal are located in the same time unit or at least partially overlapped time units;

The subcarrier position of the sequence number 0 of the first synchronization signal is N subcarrier positions higher than the subcarrier frequency domain of the highest sequence number of the second synchronization signal (i.e. the first synchronization signal is above the resource of the second synchronization signal), thereby achieving the purpose of frequency division duplexing (Frequency Division Duplexing, FDD).

The subcarrier position with the highest sequence number of the first synchronous signal is N subcarrier positions lower than the subcarrier frequency domain with the highest sequence number of the second synchronous signal (namely, the first synchronous signal is below the resource of the second synchronous signal, thereby achieving the purpose of FDD).

Since the frequency domain width of the sync of LTE is 6 RBs and can be disposed only in the frequency domain center of the partial bandwidth BWP, and the frequency domain width of the sync signal of NR is 11 RBs, the frequency domain position may be disposed at any configurable position. Therefore, considering that when SCS is 15K and 30K, as shown in fig. 4, the sync signal of LTE and the signal of NR can be configured in the same subframe in the form of FDD, so that it can be ensured that the logical time slots in the resource pool are the same from the LTE and NR point of view, avoiding different configurations.

In the embodiment of the application, under the condition that the resource of the first synchronization signal and the resource of the second synchronization signal are FDM, the CC occupied by the NR module and the synchronization signal time domain of the CC occupied by the LTE module are consistent or form an inclusion relation when the first terminal does CA.

Optionally, in the embodiment of the present application, the first information is that the first synchronization signal is located in a first resource; the first synchronization signal being located at the first resource includes at least one of:

the first synchronization signal is configured in a Downlink time slot and/or a flexible time slot of Time Division Duplex (TDD) configuration information of the LTE; because the resource pool configuration of the secondary link generally only includes Uplink timeslots and/or flexible timeslots in the TDD configuration information, when the first synchronization signal is configured in Downlink timeslots and/or flexible timeslots of the TDD configuration information of LTE, resources overlapping with the first synchronization signal will not be in the resource pool determined by LTE, so as to avoid conflicts between LTE data transmission and synchronization signals of NR.

The first synchronization signal is configured in a resource with the configuration information of the target secondary link resource pool indicated as 0; because the resource pool configuration of the secondary link indicates which resources are located in the resource pool through the bitmap, only the resources with 1 in the bitmap are the resources located in the resource pool, when the first synchronization signal is configured in the resources with the secondary link resource pool configuration information of LTE indicated as 0, the resources which are overlapped with the first synchronization signal will not exist in the resource pool determined by LTE, so as to avoid the conflict between LTE data transmission and the synchronization signal of NR.

The second synchronization signal is reused. When the NR terminal gives up sending the NR synchronization signal and redirects the LTE synchronization signal, the conflict between the LTE data sending and the NR synchronization signal and the conflict between the NR data sending and the LTE synchronization signal are naturally avoided due to the fact that the LTE resource pool and the NR resource pool are identical in the resources eliminated.

h. The first information is that the first synchronization signal is located in the first resource

Optionally, in the embodiment of the present application, the first synchronization signal may be configured in a Downlink timeslot and/or a flexible timeslot of time division duplex (Time Division Duplexing, TDD) configuration information.

i. The first information is that the first synchronization signal is located in the first resource

Optionally, in the embodiment of the present application, the first synchronization signal may be configured in a resource with a configuration information indication (bitmap) of 0 in the target sidelink resource pool (for example LTE resource pool).

j. The first information is that the first synchronization signal is located in the first resource

Optionally, in the embodiment of the present application, the first terminal may reuse the second synchronization signal (e.g. the synchronization signal received and/or transmitted by the first terminal belongs to the LTE sync signal).

Optionally, in an embodiment of the present application, reusing the second synchronization signal includes at least one of:

The transmitted synchronizing signal is an LTE synchronizing signal of a long term evolution system;

reusing the physical layer design rule of the second synchronization signal;

in case of determining a target resource pool (e.g. NR resource pool), excluding the time slot in which the second synchronization signal is located;

there is only one first synchronization signal resource per period.

When the first terminal receives and/or transmits the first synchronization signal, the first terminal may solve the problem of inconsistent resource pool configuration when the first synchronization signal is determined by the first information.

Therefore, in an embodiment of the present application, in view of the above problem 1, the embodiment of the present application provides a synchronization signal determining method, where a first terminal receives and/or transmits a first synchronization signal, where the first synchronization signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal. The first terminal can determine the first synchronization signal according to the first information, wherein the first information comprises the frequency of the first synchronization signal, the relation between the first synchronization information and the second synchronization signal, the first synchronization signal is located in the resource determined by the resource related information of the second synchronization signal, and the second synchronization signal can be configured at any configurable position because the second synchronization signal can only be configured at the center of the frequency domain of the partial bandwidth BWP, so that the first synchronization signal and the second synchronization signal can be configured in the same subframe in an FDD mode, different configurations can be avoided, and the first terminal can determine a corresponding resource pool according to the first synchronization signal, so that the first terminal can coexist with other terminals on the dedicated frequency band of the LTE Sidelink UE.

The embodiment of the application provides a synchronization signal determining method, wherein a first terminal receives and/or transmits a first synchronization signal, and the first synchronization signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal. The first terminal can determine the first synchronization signal according to the first information, wherein the first information comprises the frequency of the first synchronization signal, the relation between the first synchronization information and the second synchronization signal, and the first synchronization signal is located in the resource determined by the resource related information of the second synchronization signal.

Example two

The embodiment of the application provides a resource selection and reservation method, and fig. 5 shows a flow chart of the resource selection and reservation method provided by the embodiment of the application. As shown in fig. 5, the method for selecting and reserving resources provided in the embodiment of the present application may include steps 301 and/or 401 described below.

Step 301, the first terminal performs resource selection on the first resource pool or the first frequency band.

Optionally, in the embodiment of the present application, the first resource pool is a resource pool where the first terminal and the second terminal coexist, and the first frequency band is a frequency band where the first terminal and the second terminal coexist. The coexisting resource pool is a resource pool in which a resource pool allocated to a first terminal and a resource pool allocated to a second terminal overlap at least partially, and the partially overlapping resources are usable by both the first terminal and the second terminal, and therefore the coexisting resource pool is simply referred to as the first terminal and the second terminal. And the coexisting frequency band means that the frequency band is provided with both the first terminal and the second terminal.

Step 401, the first terminal sends second information to reserve resources.

Optionally, in the embodiment of the present application, the first resource pool or the first frequency band only allows the terminal with the first module to access. In this case, only the NR terminal with the LTE module and the LTE terminal exist in the coexistence resource pool, and the NR terminal with the LTE module can detect the LTE SCI and send the LTE SCI through the LTE module, so as to solve the problem that the NR terminal and the LTE terminal cannot mutually detect reserved resources indicated by the SCI, thereby solving resource conflict between two access technologies.

Optionally, in the embodiment of the present application, the network configuration/pre-configuration of the first terminal (for example, the configuration of the first resource pool, the configuration of the first frequency band, the frequency spectrum configuration, etc.) may refer to the network configuration of LTE. In this case, the configuration in the resource pool or the frequency band configured to the NR terminal can be consistent with the resource pool configuration or the frequency band configuration of the LTE terminal, so that a plurality of problems caused by different configuration parameters in the coexistence scene are solved. For example, if the NR resource pool also references the SCS configuration of LTE to 15KHz, it can be consistent with LTE, so that there is no need to solve the problem that the LTE terminal cannot decode SCI and reference signals other than the 15KHz configuration.

It should be noted that the above references refer to: the NR base station provides a resource pool or a frequency configuration of LTE to the NR UE, or the resource pool or the frequency configuration of LTE is contained in the pre-configuration of the NR UE for NR Sidelink transmission, and the NR UE is used for NR Sidelink transmission.

Optionally, in the embodiment of the present application, the configuration of the first resource pool or the first frequency band includes at least one of the following:

reservation period set configuration information (SL-RestrictResourceReserve periodic List/SL-RestrictResourceReserve period); for example, a parameter indicating a set of reservation periods for an LTE terminal.

Subchannel size configuration information (sizebhannel size (r 14)); for example, parameters indicating the subchannel size configuration of the resource pool where the LTE terminal is located.

Subchannel number configuration information (Subchannel number (numsubshannel-r 14)); for example, a parameter for indicating the configuration of the number of sub-channels of the resource pool where the LTE terminal is located.

TDD configuration information (TDD-config); for example, parameters indicating LTE time division duplex subframe or slot configuration.

Sidelink communication resource pool configuration information (SL-CommResourcePool); for example, parameters for indicating LTE resource pool configuration.

Sidelink communication configuration information (SL-CommConfig); for example, parameters for indicating LTE communication configuration.

System information block information (systemiformationblocktype 21), for example, system information SIB21 under LTE SL.

Optionally, in the embodiment of the present application, the first resource pool does not include a time slot including a resource of the first synchronization signal and a time slot including a resource of the second synchronization signal, where the first synchronization signal is a first terminal synchronization signal, and the second synchronization signal is a second terminal synchronization signal. (i.e., slots belonging to the Sidelink resource pool exclude slots configured with NR SSB and LTE sync signals.)

Optionally, in the embodiment of the present application, the problem of inconsistent resource pool configuration may be solved by modifying the LTE and NR resource pool configuration rules, and simultaneously excluding the time slots in which the first synchronization signal (e.g., SSB) and the second synchronization signal (e.g., LTE sync signal) are located.

Alternatively, in the embodiment of the present application, the above step 301 may be specifically implemented by the following step 301 a.

Step 301a, the first terminal processes the resources of the target resource set according to the target information.

In the embodiment of the present application, the target resource set is a candidate resource set of a secondary link of the first terminal; the target information includes at least one of: reserved resources, first information, a specific resource set and a time unit where a second synchronous signal is located of a second terminal; the second synchronizing signal is the synchronizing signal of the second terminal; wherein the first information comprises at least one of: secondary link control information SCI of the first terminal, reference signal received power RSRP of resources in the target resource set, target resource set

Optionally, in an embodiment of the present application, the target information may be at least one of the following a to f:

a. the target information is the reserved resource of the second terminal

Optionally, in the embodiment of the present application, the target information is a reserved resource of the second terminal, where the reserved resource includes a reserved period and a logical time slot number corresponding to the reserved period.

Optionally, in the embodiment of the present application, the first terminal may determine a logical location or a physical location of the resource according to a first rule, where the first rule is:

P' _{rsvp_TX} ＝P _step ×P _{rsvp_TX} And/100 (i.e., reuse of the slot transition rules of LTE, consistent with LTE terminals).

Alternatively, in the embodiment of the present application, in the case where the target information is the reserved resource of the second terminal, the above step 301a may be specifically implemented through the following steps 301a1 and 301a 2.

Step 301a1, a first terminal determines resources in a corresponding target resource set according to a reservation period and a logic time slot number corresponding to the reservation period;

in step 301a2, the first terminal performs resource exclusion on the target resource set according to the resources in the target resource set.

It should be noted that, the target resource set refers to a candidate resource set in the resource selection process. The candidate resource set is initialized according to a resource selection window at the beginning of resource selection, then the resources meeting the exclusion condition are excluded, and finally a candidate resource set which can be reported to the MAC layer is obtained. The MAC layer randomly selects resources from the reported candidate resource set as the sending resources of the terminal.

b. The target information is the reserved resource of the second terminal

Optionally, in the embodiment of the present application, the first terminal receives the SCI format 1, and in the case that the period reservation indication field in the SCI format 1 exists, the period reservation indication field of the SCI format 1 may indicate a reservation period, and the priority indication field indicates priority.

The priority is a priority of a Transport Block (TB) corresponding to the SCI.

Alternatively, in the embodiment of the present application, in the case where the target information is the first information, the above step 301a may be specifically implemented by the following step 301a 3.

In step 301a3, the first terminal performs resource exclusion on resources meeting the first target condition in the target resource set according to the first information.

Wherein the first target condition includes at least one of:

the period reservation indication field of SCI indicates the reservation period;

the priority indication field of SCI indicates priority;

the RSRP corresponding to the resources is larger than or equal to a first threshold value;

the priority of the resource is greater than or equal to a second threshold value;

the resources overlap with reserved resources corresponding to resources indicated by SCI.

Optionally, in the embodiment of the present application, the first terminal receives first information, where the first information includes information such as a detected reservation period, a priority, and a measured RSRP of SCI format1, and uses the information to exclude resources that meet the condition according to an existing resource selection procedure. At this time, the first terminal processes the reserved resources of the LTE terminal or the LTE module according to the detected NR reserved resources processing flow.

c. The target information is a specific resource set

The form of the reserved resource information of LTE received by the first terminal or the NR module of the first terminal is a resource set, and there is no other priority or RSRP related information, so only the resource set needs to be processed in a certain step of resource selection, and the reserved resource of LTE does not need to be excluded by judging priority, RSRP or the like according to the whole flow of resource selection.

Alternatively, in the embodiment of the present application, the first terminal may exclude a specific resource set from the candidate resource set.

Alternatively, in the embodiment of the present application, in the case where the target information is a specific resource set, the above step 301a may be specifically implemented by the following step 301a 4.

Step 301a4, the first terminal performs resource exclusion on a specific resource set in the target resource set.

Wherein the particular set of resources is determined by the first module; the particular set of resources is passed by the first module to the second module.

The first module is an LTE module, and the second module is an NR module.

Alternatively, in the embodiment of the present application, the step 301a4 may be specifically implemented by the following step 11 and/or step 12.

And step 11, when the first terminal determines that the target resource set meets the condition, the first terminal excludes the resources overlapped with the specific resource set from the target resource set (namely, the physical layer of the first terminal excludes the resources overlapped with the specific resource set from the candidate resource set after determining that the candidate resource set meeting the X×Mtotal).

And step 12, the MAC layer of the first terminal excludes resources overlapped with the specific resource set from the resource set reported by the physical layer.

d. The target information is a specific resource set

Alternatively, in the embodiment of the present application, the first terminal may exclude resources that overlap with the specific resource set after initializing the candidate resource set, that is, the first terminal excludes the first resource set after initializing the candidate resource set according to the resource selection window.

Alternatively, in the embodiment of the present application, in the case where the target information is a specific resource set, the above step 301a may be specifically implemented by the following step 301a 5.

Step 301a5, the first terminal initializes the target resource set, and excludes the resources overlapping with the specific resource set in the initialized target resource set.

e. The target information is the reserved resource of the second terminal

Optionally, in the embodiment of the present application, when the LTE module of the first terminal detects the reserved resource of LTE, the NR module performs resource exclusion and/or resource reservation according to the resource determined by the LTE module (i.e. the information decoded by the LTE module is shared to the NR module).

Optionally, in the embodiment of the present application, in a case where the target information is a reserved resource of the second terminal; the above step 301a may be specifically realized by the following step 301a 6.

Step 301a6, in the case that the first terminal detects the reserved resource of the second terminal, the first terminal excludes the reserved resource of the second terminal from the target resource set.

Optionally, in the embodiment of the present application, when the first terminal has both the first module (NR module) and the second module (LTE module), the configuration is allowed on the same-frequency resource pool (i.e., the resource pool to which the LTE terminal is allowed to access is configured only when the NR terminal has both modules and can exchange information such as resource detection with each other.

f. The target information is the time unit of the second synchronous signal

Optionally, in the embodiment of the present application, the MAC layer of the first terminal indicates a reserved period supported by LTE, and determines an actual position of the reserved period according to a conversion rule of LTE, so that the LTE module or the LTE SCI to be sent determines the indication period value according to the period indicated by the MAC layer. If the NR SCI is required to be transmitted or the NR module is required to be transmitted, determining a reservation period corresponding to the periodic reservation resource according to the slot conversion rule of NR, wherein the reservation period is indicated by the SCI. Therefore, in order to prevent the reservation period calculated according to the rule of NR from causing failure in the resource pool configuration, it is necessary to configure the reservation period of 1 to 99ms in the resource pool at the time of configuration.

Optionally, in the embodiment of the present application, in a case where the target information is a time unit where the second synchronization signal is located; the above step 301a may be specifically implemented by the following step 301a 7.

Step 301a7, the first terminal excludes the time slot where the second synchronization signal is located in the target resource set.

The second synchronization signal is a synchronization signal of the second terminal.

Alternatively, in the embodiment of the present application, the above step 301a7 may be specifically implemented by the following step 13 and/or step 14.

And 13, the first terminal determines the time slot of the second synchronous signal and excludes the corresponding resource in the target resource set according to the time slot where the second synchronous signal is positioned.

Step 14, the first terminal obtains the time slot of the second synchronizing signal through the configuration information of the higher layer, and excludes the corresponding resource in the target resource set according to the time slot where the second synchronizing signal is located.

Alternatively, in the embodiment of the present application, the above step 401 may be specifically implemented by the following step 401.

Step 401, the first terminal sends the second information according to the third information, and performs resource reservation.

Wherein the third information includes: the reservation period indicated in the indication information of the higher layer and/or the logical time slot number corresponding to the reservation period. The second information includes: first control information, and/or second control information. The reservation period indicated by the first control information is determined according to the indication information of the higher layer. The reserved period indicated by the second control information is determined according to the reserved resource position indicated by the first control information and/or the logic time slot number corresponding to the reserved period.

The first control information is LTE SCI, and the second control information is NR SCI.

Alternatively, in the embodiment of the present application, the above step 401 may be specifically implemented by the following step 401 a.

Step 401a, the first terminal sends second information according to fourth information, and performs resource reservation;

the reservation period configured by the fourth information for the resource pool comprises a first period set.

Optionally, in an embodiment of the present application, the first period set is 1-99ms.

Alternatively, in the embodiment of the present application, the above step 301 may be implemented by the following step 301 b.

In step 301b, when the first terminal selects a resource, the first terminal selects a resource in the target resource set, which may indicate the physical sidelink feedback channel PSFCH occalasion through retransmission indication information. Or the first terminal detects that other first terminals indicate PSFCH occasin, and the first terminal selects resources which can indicate the PSFCH occasin through retransmission indication information in the target resource set.

Alternatively, in the embodiment of the present application, the above step 301 may be implemented by the following step 301 c.

Step 301c, when the first module of the first terminal triggers resource reporting at the time N, the second module of the first terminal performs resource selection and/or reports to the MAC layer by using the information of the first module after the time n+k.

Optionally, in the embodiment of the present application, the LTE module of the first terminal triggers resource reporting, that is, reports the detected resource reservation information to a higher layer or a second module of the terminal, and the second module of the first terminal may only use the information of the first module to perform resource selection and/or report to a higher layer such as the MAC layer after the K time passes due to the processing delay.

Alternatively, in the embodiment of the present application, the above step 301 may be implemented by the following step 301 d.

In step 301d, the first terminal triggers resource reporting at time n, and the second module of the first terminal may perform resource selection and/or report the candidate resource set to the MAC layer by using the information of the first module after time n+k.

Optionally, in the embodiment of the present application, the above step 401 may be implemented specifically by the following step 401b and/or step 401 c.

Step 401b, the first terminal sends first control information.

Step 401c, the first terminal transmits the PSFCH and/or the first synchronization signal on the resource indicated by the first control information.

Wherein the first control information is SCI of the second terminal.

It should be noted that, since the second terminal may avoid the resources indicated by the other second terminal or the LTE module by detecting the LTE SCI, if the first terminal indicates or reserves the resource location by sending the LTE SCI, the PSFCH or the synchronization signal may be configured or sent on the corresponding resource, and by relying on the LTE terminal to avoid the resource, the purpose of avoiding resource collision with the LTE terminal or the LTE module is achieved.

Optionally, in the embodiment of the present application, DFN offset indicated in the first configuration information of the first frequency band is the same as DFN offset indicated in the second configuration information.

It should be noted that, when selecting the global navigation satellite system (Global Navigation Satellite System, GNSS) as the synchronization source, the first terminal may consider a timer offset (timing offset) when determining the DFN, where the timing offset is indicated by the RRC parameter. For example, in the NR protocol, the timing offset of the DFN is indicated by the sl-OffsetDFN. If the timing offset of the LTE terminal and the NR terminal are different, the determined DFNs will be inconsistent, thereby affecting synchronization. Therefore, in order to keep the LTE terminal and the NR terminal synchronized on the coexistence band to solve the problems of resource collision, etc., the pre-configuration of DFN offset of LTE and NR is the same or the same offset is configured when the network is configured.

Therefore, in the embodiment of the present application, in order to solve the above problem 2, the embodiment of the present application provides a resource selection and reservation method, and in order to solve the problem of different slot conversion rules, there are two solutions, where the first solution is to modify the slot conversion rule of NR to be the same as the rule of LTE, and only one conversion rule in the system is needed, so that the complex conversion problem does not need to be solved. The second solution is to calculate the corresponding reserved period value by using two rules, and carry the reserved period value in the corresponding SCI, so that the receiving end can determine the reserved resource according to the type of the received SCI. However, since the period reservation values defined by the LTE standard and the NR standard have different configurations, and the period reservation value set under the LTE standard is a subset of the period reservation value set under the NR standard, in order to avoid that the calculated period does not cause an indication failure in the set, when the terminal receives the reserved period indicated by the MAC, it needs to determine a specific period reservation resource location according to the timeslot conversion rule of LTE, and then calculate the reserved period value that the NR SCI should indicate according to the resource location and the NR timeslot conversion rule, so as to ensure higher indication accuracy. In addition, in order to ensure that the calculated reservation period value nrsci can also indicate, the reservation period value that needs to be limited to MAC indication can be indicated by the NR SCI after being converted, or 1-99 ms are all configured in the reservation period set supported by the resource pool. And a plurality of different methods are provided for solving the problem of how to use the information transmitted by the LTE module by the NR terminal. For example, the resources determined by the LTE module are excluded when the candidate resource set is initialized; or eliminating the resources determined by the LTE module before or after determining the final reported candidate resource set; the resources determined by the LTE module can be excluded from the candidate resource set reported by the physical layer by the MAC layer, and the physical layer does not need to do additional processing.

According to the synchronization signal determining method provided by the embodiment of the application, the execution main body can be the synchronization signal determining device. In the embodiment of the present application, a synchronization signal determining device executes a synchronization signal determining method as an example, and the synchronization signal determining device provided in the embodiment of the present application is described.

Fig. 6 shows a schematic diagram of a possible configuration of a synchronization signal determination apparatus according to an embodiment of the present application. As shown in fig. 6, the synchronization signal determining apparatus 60 may include: a processing module 61.

Wherein the processing module 61 receives and/or transmits a first synchronization signal, the first synchronization signal being determined by the first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal.

In one possible implementation, the first information includes a relationship of the first synchronization signal and the second synchronization signal; the relationship of the first synchronization signal and the second synchronization signal includes at least one of: the resource of the first synchronization signal and the resource of the second synchronization signal are frequency division multiplexed FDM; the offset of the resource of the first synchronous signal relative to the first reference point is the same as the offset of the resource of the second synchronous signal relative to the second reference point, and the first reference point and the second reference point are the same or different; the starting position of the resource of the first synchronous signal is the same as the starting position of the resource of the second synchronous signal; the end position of the resources of the first synchronization signal is the same as the end position of the resources of the second synchronization signal.

In one possible implementation, the resources of the first synchronization signal and the second synchronization signal resources FDM include at least one of: the resources of the first synchronization signal and the resources of the second synchronization signal are located in the same time unit or at least partially overlapped time units; the resources of the first synchronization signal are above the resources of the second synchronization signal; the resources of the first synchronization signal are below the resources of the second synchronization signal.

In one possible implementation, the first information is that the first synchronization signal is located at the first resource; the first synchronization signal being located at the first resource includes at least one of: the first synchronous signal is configured in a Downlink time slot and/or a flexible time slot of Time Division Duplex (TDD) configuration information; the first synchronization signal is configured in a resource with the configuration information of the target secondary link resource pool indicated as 0; the second synchronization signal is reused.

In one possible implementation, reusing the second synchronization signal includes at least one of: the transmitted synchronizing signal is an LTE synchronizing signal of a long term evolution system; reusing the physical layer design rule of the second synchronization signal; under the condition of determining a target resource pool, excluding the time slot where the second synchronous signal is located; there is only one first synchronization signal resource per period.

The terminal provided by the embodiment of the application can realize each process realized by the first embodiment of the method and achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

The synchronization signal determining device in the embodiment of the application can be a device, a device with an operating system or a UE, and also can be a component, an integrated circuit or a chip in the UE. The apparatus or electronic device may be a mobile terminal or a non-mobile terminal. By way of example, mobile terminals may include, but are not limited to, the types of terminals 11 listed above, and non-mobile terminals may be servers, network attached storage (Network Attached Storage, NAS), personal computers (personal computer, PCs), televisions (TVs), teller machines, self-service machines, etc., and embodiments of the present application are not limited in particular.

According to the resource selection and reservation method provided by the embodiment of the application, the execution main body can be a resource selection and reservation device. In the embodiment of the present application, a method for executing resource selection and reservation by a resource selection and reservation device is taken as an example, and the resource selection and reservation device provided by the embodiment of the present application is described.

Fig. 7 shows a schematic diagram of a possible configuration of a synchronization signal determination apparatus involved in an embodiment of the present application. As shown in fig. 7, the resource selection and reservation device 70 may include: a processing module 71;

The processing module 71 is configured to perform resource selection on the first resource pool or the first frequency band; and/or sending the second information to reserve resources.

In one possible implementation manner, the first resource pool is a resource pool where the first terminal and the second terminal coexist; and/or the first frequency band is a frequency band where the first terminal and the second terminal coexist.

In one possible implementation, the first resource pool or the first frequency band only allows access for terminals with the first module.

In one possible implementation, the configuration of the first resource pool or the first frequency band includes at least one of: reserving period set configuration information; sub-channel size configuration information; sub-channel number configuration information; time division duplex, TDD, configuration information; secondary link communication resource pool configuration information; sidelink communication configuration information; system information block information.

In one possible implementation, the first resource pool does not include a time slot having resources of a first synchronization signal, which is a first terminal synchronization signal, and a time slot having resources of a second synchronization signal, which is a second terminal synchronization signal.

In one possible implementation manner, the processing module 71 is specifically configured to perform resource processing on a target resource set according to target information, where the target resource set is a candidate resource set of the secondary link of the first terminal; the target information includes at least one of: reserved resources, first information, a specific resource set and a time unit where a second synchronous signal is located of a second terminal; the second synchronizing signal is the synchronizing signal of the second terminal; wherein the first information comprises at least one of: secondary link control information SCI of the first terminal, reference signal received power RSRP of resources in the target resource set, priority of resources in the target resource set; the second synchronization signal is a synchronization signal of the second terminal.

In one possible implementation manner, the target information is a reserved resource of the second terminal, where the reserved resource includes a reserved period and a logical time slot number corresponding to the reserved period; the processing module 71 is specifically configured to determine resources in the corresponding target resource set according to the reservation period and the number of logical timeslots corresponding to the reservation period; and the first terminal performs resource elimination on the target resource set according to the resources in the target resource set.

In one possible implementation, the target information is first information; the processing module 71 is specifically configured to perform resource exclusion on resources that satisfy the first target condition in the target resource set according to the first information; wherein the first target condition includes at least one of: the period reservation indication field of SCI indicates the reservation period; the priority indication field of SCI indicates priority; the RSRP corresponding to the resources is larger than or equal to a first threshold value; the priority of the resource is greater than or equal to a second threshold value; the resources overlap with reserved resources corresponding to resources indicated by SCI.

In one possible implementation, the target information is a specific set of resources; the processing module 71 is specifically configured to at least one of the following: performing resource exclusion on a specific resource set in the target resource set; wherein the particular set of resources is determined by the first module; the particular set of resources is passed by the first module to the second module.

In one possible implementation, the processing module 71 is specifically configured to at least one of: under the condition that the first terminal determines that the target resource set meets the condition, eliminating the resources overlapped with the specific resource set from the target resource set; and excluding the resources overlapped with the specific resource set from the resource set reported by the physical layer.

In one possible implementation, the target information is a specific set of resources; the processing module 71 is specifically configured to initialize the target resource set, and exclude resources in the initialized target resource set, which are coincident with the specific resource set.

In one possible implementation, the target information is a reserved resource of the second terminal; the processing module 71 is specifically configured to exclude the reserved resources of the second terminal from the target resource set if the first terminal detects the reserved resources of the second terminal.

In one possible implementation, the target information is a time unit in which the second synchronization signal is located; the processing module 71 is specifically configured to exclude a time slot in which the second synchronization signal is located in the target resource set, where the second synchronization signal is a synchronization signal of the second terminal.

In one possible implementation, the processing module 71 is specifically configured to at least one of: determining a time slot of a second synchronous signal, and removing corresponding resources in the target resource set according to the time slot of the second synchronous signal; and acquiring a time slot of the second synchronous signal through the configuration information of the higher layer, and eliminating the corresponding resources in the target resource set according to the time slot where the second synchronous signal is positioned.

In one possible implementation manner, the processing module 71 is specifically configured to send the second information according to the third information, and perform resource reservation; wherein the third information includes: the reservation period indicated in the indication information of the higher layer and/or the logic time slot number corresponding to the reservation period; the second information includes: first control information, and/or second control information; the reservation period indicated by the first control information is determined according to the indication information of the high layer; the reserved period indicated by the second control information is determined according to the reserved resource position indicated by the first control information and/or the logic time slot number corresponding to the reserved period.

In one possible implementation manner, the processing module 71 is specifically configured to send the second information according to the fourth information, and perform resource reservation; the reservation period configured by the fourth information for the resource pool comprises a first period set.

In a possible implementation manner, the processing module 71 is specifically configured to select, in a case where the first terminal selects resources, a resource in the target resource set that indicates the physical sidelink feedback channel PSFCH occsion through retransmission indication information.

In one possible implementation manner, the processing module 71 is specifically configured to perform resource selection and/or report to the MAC layer by using information of the first module after the time n+k through the second module when the first module of the first terminal triggers resource reporting at the time N.

In one possible implementation manner, the processing module 71 is specifically configured to trigger resource reporting at time n, and perform resource selection and/or report the candidate resource set to the MAC layer by using the information of the first module after time n+k.

In one possible implementation, the processing module 71 is specifically configured to at least one of: transmitting first control information; and/or transmitting the PSFCH and/or the first synchronization signal at the resource indicated by the first control information; wherein the first control information is SCI of the second terminal.

In one possible implementation, the DFN offset indicated in the first configuration information of the first frequency band is the same as the DFN offset indicated in the second configuration information.

The resource selection and reservation device provided by the embodiment of the application can realize each process realized by the second embodiment and achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

The resource selection and reservation device in the embodiment of the application can be an electronic device, for example, an electronic device with an operating system, or can be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

Optionally, as shown in fig. 8, the embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802, where the memory 802 stores a program or an instruction that can be executed on the processor 801, for example, when the communication device 800 is a terminal, the program or the instruction is executed by the processor 801 to implement each step of the above-mentioned synchronization signal determining method embodiment, or when the program or the instruction is executed by the processor 801 to implement each step of the above-mentioned resource selecting and reserving method embodiment, and the same technical effect can be achieved, and for avoiding repetition, a detailed description is omitted herein.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for receiving and/or transmitting a first synchronous signal by the first terminal, and the first synchronous signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 9 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 100 includes, but is not limited to: at least some of the components of the radio frequency unit 101, the network module 102, the audio output unit 103, the input unit 104, the sensor 105, the display unit 106, the user input unit 107, the interface unit 108, the memory 109, and the processor 110, etc.

Those skilled in the art will appreciate that the terminal 100 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 110 by a power management system to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 9 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 104 may include a graphics processing unit (Graphics Processing Unit, GPU) 1041 and a microphone 1042, with the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 107 includes at least one of a touch panel 1071 and other input devices 1072. The touch panel 1071 is also referred to as a touch screen. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 101 may transmit the downlink data to the processor 110 for processing; in addition, the radio frequency unit 101 may send uplink data to the network side device. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 109 may be used to store software programs or instructions and various data. The memory 109 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 109 may include volatile memory or nonvolatile memory, or the memory 109 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory x09 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory.

Processor 110 may include one or more processing units; optionally, the processor 110 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

In the case where the terminal 100 is the terminal described in the first embodiment,

wherein the processor 110 is configured to receive and/or transmit a first synchronization signal, the first synchronization signal being determined by the first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource; wherein the first resource is determined by resource-related information of the second synchronization signal.

In the case where the terminal 100 is the terminal described in the second embodiment,

the processor 110 is configured to perform resource selection on the first resource pool or the first frequency band; and/or sending the second information to reserve resources.

Optionally, in the embodiment of the present application, the processor 110 is specifically configured to perform resource processing on a target resource set according to target information, where the target resource set is a candidate resource set of the sidelink of the first terminal; the target information includes at least one of: reserved resources, first information, a specific resource set and a time unit where a second synchronous signal is located of a second terminal; the second synchronizing signal is the synchronizing signal of the second terminal; wherein the first information comprises at least one of: secondary link control information SCI of the first terminal, reference signal received power RSRP of resources in the target resource set, priority of resources in the target resource set; the second synchronization signal is a synchronization signal of the second terminal.

Optionally, in the embodiment of the present application, the target information is a reserved resource of the second terminal, where the reserved resource includes a reserved period and a logical time slot number corresponding to the reserved period; the processor 110 is specifically configured to determine resources in the corresponding target resource set according to the reservation period and the number of logical timeslots corresponding to the reservation period; and the first terminal performs resource elimination on the target resource set according to the resources in the target resource set.

Optionally, in the embodiment of the present application, the target information is first information; the processor 110 is specifically configured to perform resource exclusion on resources that satisfy a first target condition in the target resource set according to the first information; wherein the first target condition includes at least one of: the period reservation indication field of SCI indicates the reservation period; the priority indication field of SCI indicates priority; the RSRP corresponding to the resources is larger than or equal to a first threshold value; the priority of the resource is greater than or equal to a second threshold value; the resources overlap with reserved resources corresponding to resources indicated by SCI.

Optionally, in the embodiment of the present application, the target information is a specific resource set; the processor 110 is specifically configured to at least one of: performing resource exclusion on a specific resource set in the target resource set; wherein the particular set of resources is determined by the first module; the particular set of resources is passed by the first module to the second module.

Optionally, in an embodiment of the present application, the processor 110 is specifically configured to at least one of: under the condition that the first terminal determines that the target resource set meets the condition, eliminating the resources overlapped with the specific resource set from the target resource set; and excluding the resources overlapped with the specific resource set from the resource set reported by the physical layer.

Optionally, in the embodiment of the present application, the target information is a specific resource set; the processor 110 is specifically configured to initialize the target resource set, and exclude resources in the initialized target resource set, which are coincident with the specific resource set.

Optionally, in the embodiment of the present application, the target information is a reserved resource of the second terminal; the processor 110 is specifically configured to exclude the reserved resources of the second terminal from the target resource set if the first terminal detects the reserved resources of the second terminal.

Optionally, in the embodiment of the present application, the target information is a time unit where the second synchronization signal is located; the processor 110 is specifically configured to exclude a time slot in which a second synchronization signal is located in the target resource set, where the second synchronization signal is a synchronization signal of the second terminal.

Optionally, in an embodiment of the present application, the processor 110 is specifically configured to at least one of: determining a time slot of a second synchronous signal, and removing corresponding resources in the target resource set according to the time slot of the second synchronous signal; and acquiring a time slot of the second synchronous signal through the configuration information of the higher layer, and eliminating the corresponding resources in the target resource set according to the time slot where the second synchronous signal is positioned.

Optionally, in the embodiment of the present application, the processor 110 is specifically configured to send the second information according to the third information, so as to perform resource reservation; wherein the third information includes: the reservation period indicated in the indication information of the higher layer and/or the logic time slot number corresponding to the reservation period; the second information includes: first control information, and/or second control information; the reservation period indicated by the first control information is determined according to the indication information of the high layer; the reserved period indicated by the second control information is determined according to the reserved resource position indicated by the first control information and/or the logic time slot number corresponding to the reserved period.

Optionally, in the embodiment of the present application, the processor 110 is specifically configured to send the second information according to the fourth information, so as to perform resource reservation; the reservation period configured by the fourth information for the resource pool comprises a first period set.

Optionally, in the embodiment of the present application, the processor 110 is specifically configured to select, when the first terminal selects a resource, a resource in the target resource set, where the resource indicates a physical sidelink feedback channel PSFCH occsion through retransmission indication information.

Optionally, in the embodiment of the present application, the processor 110 is specifically configured to perform resource selection and/or report to the MAC layer by using information of the first module after the time n+k through the second module when the first module of the first terminal triggers resource reporting at the time N.

Optionally, in the embodiment of the present application, the processor 110 is specifically configured to trigger resource reporting at time n, and perform resource selection and/or report the candidate resource set to the MAC layer by using the information of the first module after time n+k.

Optionally, in an embodiment of the present application, the processor 110 is specifically configured to at least one of: transmitting first control information; and/or transmitting the PSFCH and/or the first synchronization signal at the resource indicated by the first control information; wherein the first control information is SCI of the second terminal.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, where the program or the instruction implements each process of the above-described synchronization signal determining method embodiment or implements each process of the above-described resource selecting and reserving method embodiment when executed by a processor, and the process may achieve the same technical effect, so that repetition is avoided and no detailed description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running a program or instructions, realizing each process of the above-mentioned synchronization signal determining method embodiment, or realizing each process of the above-mentioned resource selecting and reserving method embodiment, and achieving the same technical effect, so that repetition is avoided, and no redundant description is provided herein.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product stored in a storage medium, where the computer program/program product is executed by at least one processor to implement each process of the above-mentioned embodiments of the method for determining a synchronization signal, or implement each process of the above-mentioned embodiments of the method for selecting and reserving resources, and achieve the same technical effects, so that repetition is avoided and no further description is given here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A synchronization signal determination method, comprising:

the first terminal receives and/or transmits a first synchronization signal, wherein the first synchronization signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource;

wherein the first resource is determined by resource-related information of the second synchronization signal.

2. The method of claim 1, wherein the first information comprises a relationship of the first synchronization signal and a second synchronization signal; the relationship of the first synchronization signal and the second synchronization signal comprises at least one of the following:

the offset of the resource of the first synchronization signal relative to a first reference point is the same as the offset of the resource of the second synchronization signal relative to a second reference point, and the first reference point and the second reference point are the same or different;

the initial position of the resource of the first synchronous signal is the same as the initial position of the resource of the second synchronous signal;

The end position of the resource of the first synchronization signal is the same as the end position of the resource of the second synchronization signal.

3. The method of claim 2, wherein the resources of the first synchronization signal and the second synchronization signal resources FDM comprise at least one of:

the resources of the first synchronization signal and the resources of the second synchronization signal are located in the same time unit or at least partially overlapped time units;

the resources of the first synchronization signal are above the resources of the second synchronization signal;

the resources of the first synchronization signal are below the resources of the second synchronization signal.

4. The method of claim 1, wherein the first information is that the first synchronization signal is located at a first resource; the first synchronization signal being located at the first resource includes at least one of:

the first synchronization signal is configured in a Downlink time slot and/or a flexible time slot of Time Division Duplex (TDD) configuration information;

the first synchronization signal is configured in a resource with the configuration information of the target sidelink resource pool indicated as 0;

reusing the second synchronization signal.

5. The method of claim 4, wherein the reusing the second synchronization signal comprises at least one of:

reusing the physical layer design rule of the second synchronization signal;

under the condition that the target resource pool is determined, excluding the time slot where the second synchronous signal is located;

there is only one of the first synchronization signal resources in each period.

6. A method for selecting and reserving resources, comprising:

the first terminal selects resources on a first resource pool or a first frequency band;

and/or

And sending the second information to reserve resources.

7. The method of claim 6, wherein the first resource pool is a resource pool where the first terminal and the second terminal coexist;

and/or

The first frequency band is a frequency band where the first terminal and the second terminal coexist.

8. The method of claim 6, wherein the first resource pool or the first frequency band only allows access for terminals having a first module.

9. The method of claim 6, wherein the configuration of the first resource pool or the first frequency band comprises at least one of:

reserving period set configuration information;

sub-channel size configuration information;

sub-channel number configuration information;

Time division duplex, TDD, configuration information;

secondary link communication resource pool configuration information;

sidelink communication configuration information;

system information block information.

10. The method of claim 6, wherein the first pool of resources does not include a time slot having resources of a first synchronization signal and a time slot having resources of a second synchronization signal, the first synchronization signal being the first terminal synchronization signal and the second synchronization signal being the second terminal synchronization signal.

11. The method according to claim 6, wherein the first terminal performs resource selection on the first resource pool or the first frequency band, and the method comprises:

the first terminal carries out resource processing on a target resource set according to target information, wherein the target resource set is a candidate resource set of a secondary link of the first terminal;

the target information includes at least one of: reserved resources, first information, a specific resource set and a time unit where a second synchronous signal is located of a second terminal; the second synchronous signal is the synchronous signal of the second terminal;

wherein the first information includes at least one of: the secondary link control information SCI of the first terminal, the reference signal received power RSRP of the resources in the target resource set, the priority of the resources in the target resource set; the second synchronization signal is a synchronization signal of the second terminal.

12. The method of claim 11, wherein the target information is a reserved resource of the second terminal, the reserved resource comprising a reservation period and a logical time slot number corresponding to the reservation period;

the first terminal processes the resources of the target resource set according to the target information, and the method comprises the following steps:

the first terminal determines the resources in the corresponding target resource set according to the reserved period and the logic time slot number corresponding to the reserved period;

and the first terminal performs resource elimination on the target resource set according to the resources in the target resource set.

13. The method of claim 11, wherein the target information is the first information;

the first terminal performs resource elimination on the resources meeting the first target condition in the target resource set according to the first information;

wherein the first target condition includes at least one of:

the period reservation indication field of the SCI indicates a reservation period;

the priority indication field of the SCI indicates priority;

the resources overlap with reserved resources corresponding to the resources indicated by the SCI.

14. The method of claim 11, wherein the target information is the particular set of resources; the first terminal processes the resources of the target resource set according to the target information, and the method comprises at least one of the following steps:

the first terminal performs resource elimination on the specific resource set in the target resource set;

wherein the particular set of resources is determined by a first module; the particular set of resources is passed by the first module to the second module.

15. The method of claim 14, wherein the first terminal performs resource exclusion for the particular set of resources in the target set of resources, comprising at least one of:

under the condition that the first terminal determines that the target resource set meets the condition, the first terminal excludes resources which are overlapped with the specific resource set from the target resource set;

and the MAC layer of the first terminal excludes resources overlapped with the specific resource set from the resource set reported by the physical layer.

16. The method according to claim 11 or 14, wherein the target information is a specific set of resources;

the first terminal initializes the target resource set and excludes resources which are overlapped with the specific resource set in the initialized target resource set.

17. The method according to claim 11, wherein the target information is reserved resources of the second terminal; the first terminal processes the resources of the target resource set according to the target information, and the method comprises the following steps:

and under the condition that the first terminal detects the reserved resources of the second terminal, the first terminal excludes the reserved resources of the second terminal from a target resource set.

18. The method of claim 11, wherein the target information is a time unit in which the second synchronization signal is located;

the first terminal performs resource processing on a target resource set according to target information, and the method comprises the following steps:

the first terminal excludes the time slot where the second synchronous signal is located in the target resource set, wherein the second synchronous signal is the synchronous signal of the second terminal.

19. The method of claim 18, wherein the first terminal excludes the time slot in which the second synchronization signal is located in the target resource set, including at least one of:

the first terminal determines the time slot of the second synchronous signal and excludes the corresponding resource in the target resource set according to the time slot of the second synchronous signal;

the first terminal obtains the time slot of the second synchronous signal through the configuration information of the high layer, and excludes the corresponding resource in the target resource set according to the time slot where the second synchronous signal is located.

20. The method of claim 6, wherein the step of providing the first layer comprises,

the sending the second information, performing resource reservation, includes:

the first terminal sends the second information according to the third information to reserve resources;

wherein the third information includes:

the reservation period indicated in the indication information of the higher layer and/or the logic time slot number corresponding to the reservation period;

the second information includes: first control information, and/or second control information;

the reservation period indicated by the first control information is determined according to the indication information of a high layer;

And the reserved period indicated by the second control information is determined according to the reserved resource position indicated by the first control information and/or the logic time slot number corresponding to the reserved period.

21. The method of claim 6, wherein the step of providing the first layer comprises,

the sending the second information, performing resource reservation, includes:

the first terminal sends the second information according to the fourth information to reserve resources;

wherein the reservation period configured for the resource pool by the fourth information includes the first period set.

22. The method of claim 6, wherein the first terminal performs resource selection on a first resource pool or a first frequency band, comprising:

and under the condition that the first terminal selects resources, the first terminal selects resources which are indicated to a physical sidelink feedback channel PSFCH occalasion through retransmission indication information in a target resource set.

23. The method of claim 6, wherein the first terminal performs resource selection on a first resource pool or a first frequency band, comprising:

and under the condition that the first module of the first terminal triggers resource reporting at the time N, the second module of the first terminal selects and/or reports the resource to the MAC layer by utilizing the information of the first module after the time n+K.

24. The method of claim 6, wherein the first terminal performs resource selection on the first resource pool or the first frequency band, comprising:

and the first terminal triggers resource reporting at the moment n, and the second module of the first terminal performs resource selection and/or reports a candidate resource set to the MAC layer by using the information of the first module after the moment n+K.

25. The method of claim 6, wherein the sending the second information for resource reservation comprises at least one of:

transmitting first control information;

and/or

Transmitting the PSFCH and/or the first synchronization signal at the resource indicated by the first control information;

wherein the first control information is SCI of the second terminal.

26. The method of claim 7, wherein the DFN offset indicated in the first configuration information for the first frequency band is the same as the DFN offset indicated in the second configuration information.

27. A synchronization signal determination apparatus, the apparatus comprising: a processing module; the processing module is used for receiving and/or transmitting a first synchronous signal, and the first synchronous signal is determined by first information; the first information includes at least one of: only one first synchronization signal resource exists in each period, the relation between the first synchronization signal and the second synchronization signal exists in the first frequency band, the first synchronization signal resource does not exist in the first frequency band, and the first synchronization signal is located in the first resource;

28. The apparatus of claim 27, wherein the first information comprises a relationship of the first synchronization signal and a second synchronization signal; the relationship of the first synchronization signal and the second synchronization signal comprises at least one of the following:

29. The apparatus of claim 28, wherein the resources of the first synchronization signal and the second synchronization signal resources FDM comprise at least one of:

30. The apparatus of claim 27, wherein the first information is that the first synchronization signal is located at a first resource; the first synchronization signal being located at the first resource includes at least one of:

reusing the second synchronization signal.

31. The apparatus of claim 30, wherein the reusing the second synchronization signal comprises at least one of:

reusing the physical layer design rule of the second synchronization signal;

there is only one of the first synchronization signal resources in each period.

32. A resource selection and reservation device, the device comprising: a processing module; the processing module is used for selecting resources on the first resource pool or the first frequency band;

And/or

And sending the second information to reserve resources.

33. The apparatus of claim 32, wherein the first resource pool is a resource pool where the first terminal and the second terminal coexist;

and/or

34. The apparatus of claim 32, wherein the first resource pool or the first frequency band only allows access for terminals having a first module.

35. The apparatus of claim 32, wherein the configuration of the first resource pool or the first frequency band comprises at least one of:

reserving period set configuration information;

sub-channel size configuration information;

sub-channel number configuration information;

time division duplex, TDD, configuration information;

secondary link communication resource pool configuration information;

sidelink communication configuration information;

system information block information.

36. The apparatus of claim 32, wherein the first pool of resources does not include a time slot having resources for a first synchronization signal and a time slot having resources for a second synchronization signal, the first synchronization signal being the first terminal synchronization signal and the second synchronization signal being a second terminal synchronization signal.

37. The apparatus of claim 32, wherein the processing module is specifically configured to perform resource processing on a target resource set according to target information, where the target resource set is a candidate resource set of the sidelink of the first terminal;

38. The apparatus of claim 37, wherein the target information is a reserved resource of the second terminal, the reserved resource comprising a reservation period and a logical time slot number corresponding to the reservation period;

the processing module is specifically configured to determine, according to the reservation period and the number of logical timeslots corresponding to the reservation period, a resource in the corresponding target resource set;

39. The apparatus of claim 37, wherein the target information is the first information;

the processing module is specifically configured to perform resource exclusion on resources that satisfy a first target condition in the target resource set according to the first information;

wherein the first target condition includes at least one of:

the priority indication field of the SCI indicates priority;

40. The apparatus of claim 37, wherein the target information is the particular set of resources; the processing module is specifically configured to perform resource exclusion on the specific resource set in the target resource set;

41. The apparatus of claim 40, wherein the processing module is specifically configured to at least one of:

under the condition that the first terminal determines that the target resource set meets the condition, excluding resources which are coincident with the specific resource set from the target resource set;

and excluding the resources overlapped with the specific resource set from the resource set reported by the physical layer.

42. The apparatus according to claim 37 or 40, wherein the target information is a specific set of resources;

the processing module is specifically configured to initialize the target resource set, and exclude resources in the initialized target resource set, where the resources overlap with the specific resource set.

43. The apparatus of claim 37, wherein the target information is reserved resources of the second terminal; the processing module is specifically configured to exclude the reserved resource of the second terminal from the target resource set when the first terminal detects the reserved resource of the second terminal.

44. The apparatus of claim 37, wherein the target information is a time unit in which the second synchronization signal is located;

The processing module is specifically configured to exclude a time slot in which a second synchronization signal is located in the target resource set, where the second synchronization signal is a synchronization signal of the second terminal.

45. The apparatus of claim 44, wherein the processing module is specifically configured to at least one of:

determining a time slot of the second synchronous signal, and eliminating corresponding resources in the target resource set according to the time slot of the second synchronous signal;

and acquiring the time slot of the second synchronous signal through the configuration information of a higher layer, and eliminating the corresponding resource in the target resource set according to the time slot where the second synchronous signal is positioned.

46. The apparatus of claim 32, wherein the device comprises a plurality of sensors,

the processing module is specifically configured to send the second information according to the third information, and perform resource reservation;

wherein the third information includes:

47. The apparatus of claim 32, wherein the device comprises a plurality of sensors,

the processing module is specifically configured to send the second information according to the fourth information, and perform resource reservation;

48. The apparatus of claim 32, wherein the processing module is specifically configured to select, in a case where the first terminal selects resources, resources in the target resource set that indicate a physical sidelink feedback channel PSFCH occision through retransmission indication information.

49. The apparatus of claim 32, wherein the processing module is specifically configured to perform resource selection and/or report to a MAC layer by using information of the first module after time n+k when the first module of the first terminal triggers resource reporting at time N.

50. The apparatus of claim 32, wherein the processing module is specifically configured to trigger resource reporting at time n, and perform resource selection and/or report the candidate resource set to the MAC layer by using information of the first module after time n+k.

51. The apparatus according to claim 32, wherein the processing module is specifically configured to at least one of:

transmitting first control information;

and/or

wherein the first control information is SCI of the second terminal.

52. The apparatus of claim 33, wherein the DFN offset indicated in the first configuration information for the first frequency band is the same as the DFN offset indicated in the second configuration information.

53. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the synchronization signal determination method of any one of claims 1 to 5.

54. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the resource selection and reservation method of any of claims 6 to 26.

55. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implements the synchronization signal determination method according to any one of claims 1 to 5 or the steps of the resource selection and reservation method according to any one of claims 6 to 26.