WO2022078390A1

WO2022078390A1 - Resource pool switching method and apparatus, terminal and network side device

Info

Publication number: WO2022078390A1
Application number: PCT/CN2021/123540
Authority: WO
Inventors: 杨聿铭; 彭淑燕; 纪子超; 刘思綦; 王欢
Original assignee: 维沃移动通信有限公司
Priority date: 2020-10-15
Filing date: 2021-10-13
Publication date: 2022-04-21
Also published as: CN114375045A

Abstract

Disclosed are a resource pool switching method and apparatus, a terminal and a network side device, which belong to the technical field of communications. In cases where a first terminal determines, according to the received first indication information and/or according to a pre-configuration, to switch the current resource pool of the first terminal, the first terminal switches the current resource pool of the first terminal to a target resource pool.

Description

Resource pool switching method, device, terminal and network side device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202011105338.5 filed in China on October 15, 2020, the entire contents of which are incorporated herein by reference.

technical field

The present application belongs to the field of communication technologies, and in particular relates to a resource pool switching method, device, terminal and network side equipment.

Background technique

Currently, a terminal supports configuring multiple sending resource pools, and performs detection in the configured resource pools. At a certain moment, the terminal only sends data in one resource pool. Because the performance of the terminal in different resource pools may be different under different system conditions, if the terminal uses the same resource pool to send and receive data under different system conditions, the performance of the terminal will be affected.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a resource pool switching method, device, terminal, and network side equipment, which can solve the problem that the terminal uses the same resource pool to send and receive data under different system conditions, which affects the performance of the terminal.

In a first aspect, a method for switching resource pools is provided, executed by a first terminal, including:

When it is determined to switch the current resource pool of the first terminal according to the received first indication information and/or according to the pre-configuration, the current resource pool of the first terminal is switched to the target resource pool.

In a second aspect, a resource pool switching method is provided, executed by a second terminal, a control node or a network side device, including:

Send first indication information to the first terminal, where the first indication information is used to instruct the first terminal to switch resource pools.

In a third aspect, a resource pool switching device is provided, including:

A switching module, configured to switch the current resource pool of the first terminal as the target when it is determined to switch the current resource pool of the first terminal according to the received first indication information and/or according to the pre-configuration resource pool.

In a fourth aspect, a resource pool switching device is provided, including:

The sending module is configured to send first indication information to the first terminal, where the first indication information is used to instruct the first terminal to switch the resource pool.

In a fifth aspect, a network-side device is provided, the terminal includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the processor When executed, the steps of the resource pool switching method described in the second aspect are realized.

In a sixth aspect, a terminal is provided, the terminal includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, when the program or instruction is executed by the processor The steps of implementing the resource pool switching method according to the first aspect or the second aspect.

In a seventh aspect, a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the resource pool switching method as described in the first aspect are implemented, Or implement the steps of the resource pool switching method described in the second aspect.

In an eighth aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a network-side device program or instruction, and implements the method described in the first aspect. The resource pool switching method described above, or implementing the resource pool switching method described in the second aspect.

In a ninth aspect, a computer program product is provided, the computer program product is stored in a non-volatile storage medium, and the computer program product is executed by at least one processor to implement the resource pool according to the first aspect A switching method, or implementing the resource pool switching method according to the second aspect.

In this embodiment of the present application, the first terminal may determine whether to perform resource pool switching according to the first indication information and/or according to the pre-configuration, and switch the current resource pool of the first terminal if it is determined to perform resource pool switching. is the target resource pool, so that the first terminal can switch the current resource pool, flexibly select the resource pool used by the first terminal, and improve the performance of the resource pool used by the first terminal at different times, so that the first terminal can obtain the resource pool at different times. optimum performance.

Description of drawings

1 is a structural diagram of a network system provided by an embodiment of the present application;

FIG. 2 is one of the flowcharts of the resource pool switching method provided by the embodiment of the present application;

3a is a schematic diagram of resource pool switching provided by an embodiment of the present application;

3b is a schematic diagram of a PSCCH scheduling multiple resource pools for cross-resource pool transmission according to an embodiment of the present application;

FIG. 3c is a schematic diagram of multiple PSCCHs each scheduling each resource pool for cross-resource pool transmission according to an embodiment of the present application;

3d is a schematic diagram of resource reservation across resource pools performed by a first terminal when multiple resource pools are configured for transmission according to an embodiment of the present application;

FIG. 4 is the second flow chart of the resource pool switching method provided by the embodiment of the present application;

5 is a structural diagram of an apparatus for switching a first resource pool provided by an embodiment of the present application;

6 is a structural diagram of a second resource pool switching apparatus provided by an embodiment of the present application;

7 is a structural diagram of a communication device provided by an embodiment of the present application;

FIG. 8 is a structural diagram of a terminal provided by an embodiment of the present application;

FIG. 9 is a structural diagram of a network side device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and "first", "second" distinguishes Usually it is a class, and the number of objects is not limited. For example, the first object may be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

It is worth noting that the technologies described in the embodiments of this application are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. However, the following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the description below, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6th ^Generation , 6G) communication system.

FIG. 1 shows a block diagram of a wireless communication system to which the embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12 . Wherein, the terminal 11 may also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital computer Assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (VUE), pedestrian terminal (PUE) and other terminal-side devices, wearable devices include: bracelets, headphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal 11 . The network side device 12 may be a base station or a core network, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a basic service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, Send Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. The base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The method for switching resource pools provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Please refer to FIG. 2. FIG. 2 is a flowchart of a method for switching resource pools provided by an embodiment of the present application. The method for switching resource pools is executed by a first terminal, including:

Step 201: In the case where it is determined to switch the current resource pool of the first terminal according to the received first indication information and/or according to the pre-configuration, switch the current resource pool of the first terminal to the target resource pool .

The first terminal supports resource pool switching. The above steps may include the following situations: when it is determined to switch the current resource pool of the first terminal according to the received first indication information, the current resource pool of the first terminal is switched to the target resource pool, for example, the first indication information including resource information of the target resource pool, and the first terminal determines the target resource pool to perform handover according to the first indication information;

Or, according to the pre-configuration, when it is determined to switch the current resource pool of the first terminal, switch the current resource pool of the first terminal to the target resource pool, for example, when the first terminal determines that the resource pool switching is required , switch according to the target resource pool determined by the pre-configuration;

Or, when it is determined to switch the current resource pool of the first terminal according to the received first indication information and the pre-configuration, switch the current resource pool of the first terminal to the target resource pool, for example, in When the first indication information instructs the first terminal to perform resource switching, the first terminal may determine the target resource pool to perform switching according to the pre-configuration.

The first indication information may be sent to the first terminal by the second terminal, the control node and the network side device. The pre-configuration may be protocol pre-definition; network-side device configuration or pre-configuration; the first terminal configuration or pre-configuration, and so on.

In this implementation, switching the current resource pool of the first terminal to the target resource pool, that is, switching the current resource pool of the first terminal to the target resource pool, can be understood as an action of the first terminal completing the switching.

In this embodiment, the first terminal may determine whether to perform resource pool switching according to the first indication information and/or according to the pre-configuration, and switch the current resource pool of the first terminal as the target if it is determined to perform resource pool switching resource pool, so that the first terminal can switch the current resource pool, flexibly select the resource pool used by the first terminal, and improve the performance of the resource pool used by the first terminal at different times, so that the first terminal can obtain the optimal resource pool at different times. performance.

In the above, the first indication information includes at least one of the following:

the identifier of the target resource pool;

Frequency point information related to the target resource pool.

The first indication information is carried in at least one of downlink control information (Downlink Control Information, DCI), secondary link control information (Sidelink control information, SCI) and high-level signaling, where the high-level signaling is a radio resource Control (Radio Resource Control, RRC) signaling, or Media Access Control (Media Access Control, MAC) control element (Control Element, CE) signaling.

In the above, the identifier of the target resource pool may be indicated by a plurality of bits.

In the case that the first indication information includes the target resource pool, the target resource pool is determined according to the first indication information.

In the above, the first indication information is indication information for multicast transmission, indication information for unicast transmission, indication information for broadcast transmission, or dedicated indication information.

In the above, switching the current resource pool of the first terminal to the target resource pool includes:

If the current resource pool of the first terminal satisfies at least one of the following items, switch the current resource pool of the first terminal to the target resource pool according to the pre-configuration of the first terminal:

The channel occupancy ratio (Channel occupancy ratio, CR) of the current resource pool is greater than the first threshold value;

The channel busy ratio (Channel busy ratio, CBR) of the current resource pool is greater than the second threshold;

The peak rate of the current resource pool is less than a third threshold;

The target resource pool satisfies at least one of the following:

The CR of the target resource pool is not greater than the first threshold;

The CBR of the target resource pool is not greater than the second threshold;

The peak rate of the target resource pool is not less than the third threshold value.

In the above, the first threshold value, the second threshold value, and the third threshold value can be set according to actual conditions, which are not limited here. The CR, CBR or peak rate of the target resource pool is better than the CR, CBR or peak rate of the current resource pool, then after the first terminal switches the current resource pool to the target resource pool, the first terminal can improve the performance of the first terminal on the target resource pool. Data transfer performance.

In an embodiment of the present application, the resource pool switching method further includes:

The second indication information is sent to at least one of a second terminal, a control node, and a network-side device, where the second indication information is used to instruct the first terminal to switch to the target resource pool.

When the first terminal switches the resource pool according to the pre-configuration, before switching, it can send the second indication information to the second terminal, the control node or the network side device communicating with the first terminal, so as to inform the second terminal, the control node and the network side device. The target resource pool for switching between the node and the first terminal of the network side device. In this way, after receiving the second indication information, the second terminal, the control node and the network-side device can perform data transmission and reception on the resources of the target resource pool in subsequent data communication with the first terminal. After receiving the second indication information, the second terminal may also send feedback information to the first terminal to inform the first terminal that it has been switched to the target resource pool.

The second indication information includes at least one of the following:

the identifier of the target resource pool;

Frequency point information related to the target resource pool.

The second indication information is carried in at least one of DCI, SCI and high layer signaling, and the high layer signaling is RRC signaling or MAC CE signaling.

In an embodiment of the present application, the method further includes:

Turn on the switch activation timer;

If the switching activation timer expires, the data reception operation and/or the data transmission operation are suspended.

Optionally, the above process may be performed before switching the current resource pool of the first terminal to the target resource pool.

The first terminal may start the handover activation timer when receiving the first indication information, or the first terminal may determine, according to the received first indication information and/or pre-configuration, that a resource pool handover needs to be performed , turn on the Handover Activation Timer. If the switching activation timer expires, the data receiving operation and/or the data sending operation are suspended, and before the switching activation timer expires, the first terminal can continue to perform the data receiving operation and/or the data sending operation.

In an embodiment of the present application, the method further includes:

Turn on the handover wait timer;

If the handover waiting timer expires, a data reception operation and/or a data transmission operation are performed.

Optionally, the above process may be performed after the switching activation timer is started and before switching the current resource pool of the first terminal to the target resource pool, for example, before the switching timer expires, or before switching. When the timer expires, the handover waiting timer is started. The handover waiting timer is used to indicate that the first terminal can continue to perform the data receiving operation and/or the data sending operation.

In an embodiment of the present application, the method further includes:

Send handover information, where the handover information includes at least one of resource information of the target resource pool, time of a handover activation timer, time of a formal handover, and time of a handover waiting timer.

Optionally, the above process may be performed before switching the current resource pool of the first terminal to the target resource pool, for example, after the first terminal receives the first indication information, or the first terminal determines to perform resource pooling. After the handover, in the time period before the current resource pool of the first terminal is switched to the target resource pool, the processing related to the resource handover can be performed, for example, starting the handover activation timer, turning on the handover waiting timer, and determining the official handover. time and so on. The first terminal may send its own information related to resource switching, that is, switching information, to the opposite terminal that communicates with the first terminal, for example, at least one of the second terminal, the control node, and the network side device.

In the above, after switching the current resource pool of the first terminal to the target resource pool, the method further includes:

If response information for the switching information is received, a data reception operation and/or a data transmission operation are performed.

In an embodiment of the present application, when it is determined to switch the current resource pool of the first terminal according to the received first indication information and/or according to the pre-configuration, the current resource pool of the first terminal is Switch to the target resource pool, including:

In the case where it is determined to switch the current resource pool of the first terminal according to the received first indication information and/or according to the pre-configuration of the first terminal, determine the resource pool set of the first terminal from the set of resource pools of the first terminal. the target resource pool, the resource pool set includes a plurality of resource pools;

The current resource pool of the first terminal is switched to the target resource pool.

The target resource pool may include one or at least two resource pools. If the target resource pool includes at least two resource pools, if the first terminal supports simultaneous data transmission in multiple resource pools, the first terminal may simultaneously use multiple resource pools. The resources in each resource pool are used for data transmission, that is, cross-resource pool transmission is adopted.

When the first terminal determines to switch the current resource pool, the target resource pool is determined from the resource pool set of the first terminal, and the resource pool set includes multiple resource pools.

Wherein, the multiple resource pools satisfy at least one of the following:

The time domain resources of at least two resource pools in the multiple resource pools are the same, or the time domain resources overlap or partially overlap;

Frequency division multiplexing is used for frequency resources in different resource pools in the multiple resource pools;

The period of the first resource pool in the plurality of resource pools is greater than the first time threshold;

The number of time domain resources in the first resource pool of the plurality of resource pools in the period is less than the first number threshold.

In the above, the resource pools in the resource pool set may be predefined by a protocol, configured or preconfigured by a network side device, configured or preconfigured by the first terminal, and so on. The time domain resources of at least two resource pools in the multiple resource pools are the same, or the time domain resources overlap or partially overlap, for example, the time slot ( slot) are partially or fully the same.

The frequency domain resources of different resource pools exist in the form of frequency division multiplexing. The starting positions of frequency resources in different resource pools using frequency division multiplexing in the multiple resource pools are determined by at least one of the following methods:

Indicated by high-level configuration and/or pre-configured start position parameters, such as the sl_StartRB-Subchannel parameter;

The starting physical resource block (Physical Resource Block, PRB) of the next resource pool in the frequency domain is the mth PRB after the end of the previous resource pool, where m is a positive integer, and m is determined by high-level signaling. For example, m is determined by high-level signaling. Let pre-defined, configured or pre-configured, the next resource pool and the previous resource pool are different resource pools using frequency division multiplexing among the plurality of resource pools.

For terminals that support power saving, a longer period (for example, the period is greater than 1024ms) and/or sparse resources (for example, the number of time domain resources in the period is less than the first number threshold, and/or the sum of the two time domain resources) can be set A resource pool whose interval is not less than the first time threshold).

In an embodiment of the present application, when it is determined to switch the current resource pool of the first terminal according to the received first indication information, the current resource pool of the first terminal is switched to the target resource pool, include:

In the case that the first terminal does not include the target resource pool indicated by the first indication information, that is, the resource pool set of the first terminal does not include the target resource pool, the current resource pool of the first terminal is switched to Default resource pool.

The default resource pool may be determined by protocol pre-definition, or determined by network-side device configuration or pre-configuration, or determined by first terminal configuration or pre-configuration.

In an embodiment of the present application, the resource switching method further includes: when it is determined according to the received first indication information that the first terminal does not include the target resource pool indicated by the first indication information, no the current resource pool of the first terminal is switched;

or,

When it is determined according to the received first indication information that the current resource pool of the first terminal is the same as the target resource pool indicated by the first indication information, the current resource pool of the first terminal is not switched.

In the above, if the first terminal does not include the target resource pool indicated by the first indication information, that is, the resource pool set of the first terminal does not include the target resource pool, or, the current resource of the first terminal If the pool is the same as the target resource pool indicated by the first indication information, the first terminal does not switch the current resource pool.

In the above, after the switching of the current resource pool of the first terminal to the target resource pool, the method further includes:

Data transmission is performed using the target resources in the target resource pool. Wherein, the target resource is a resource other than the following resources in the multiple resource pools:

In the reserved resources of other terminals, the reference signal received power (Reference Signal Received Power, RSRP) is larger than the preset threshold. The other terminals do not include the first terminal. The first indication information is jointly encoded with resource reservation information of other terminals.

The reserved resources are determined by the first terminal performing joint detection and/or resource exclusion in the multiple resource pools.

When the first terminal performs detection in multiple resource pools, it can perform independent detection (sensing), resource exclusion, etc. on each resource pool, and then (for one SCI can schedule resources in multiple resource pools or facilitate other forms of cross-resource pool transfer) jointly perform resource selection across resource pools, and/or select resources for transfer across resource pools.

For example, the first terminal performs detection in the first resource pool, and obtains the first detection result; performs detection in the second resource pool, acquires the second detection result, and sequentially performs detection on each resource pool to obtain the corresponding detection result. According to the detection results and resource exclusion results of each resource pool, resource selection is performed in multiple resource pools.

Optionally, in order to detect the situation of resource reservation across resource pools, joint detection across resource pools, joint resource exclusion, joint candidate resource set establishment, joint resource selection, and/or resource selection for cross-resource pool transmission are performed. The first terminal performs joint detection on multiple resource pools, excludes reserved resources in the same resource pool and/or across resource pools, and/or, according to the detection results and resource exclusion results of the resource pools, in multiple resource pools (may be Select some or all of multiple resource pools for resource selection.

When limited by power, and/or the ability to transmit multiple resource pools, and/or the ability to transmit across resource pools, and/or radio frequency (Radio Frequency, RF) chain related restrictions, the transmission of resources on a resource pool is limited. The candidate resources in the other part or all of the resource pools in the subframe where it is located are excluded.

If multiple resource pools include reserved resources in different resource pools, the resource information of one or more resource pools where the reserved resources are located may be carried in the SCI.

In the above, the reserved resources include resources reserved by other terminals across resource pools in the multiple resource pools.

In the above, the target resource is a resource in the current time domain resources in the multiple resource pools; or, the target resource is a resource with the same or overlapping time domain resources in the multiple resource pools.

In the above, the target resource pool includes N resource pools in the plurality of resource pools;

The data transmission using the target resources in the target resource pool includes:

Use the target resources in the N resource pools scheduled by one SCI to perform data transmission;

or,

Use the target resources in the N resource pools scheduled by the N SCIs to perform data transmission;

N is an integer greater than 1.

When the target resources in the N resource pools scheduled by one SCI are used for data transmission, the same service data may be transmitted by using the target resources in the N resource pools scheduled by one SCI. Similarly, the target resources in the N resource pools scheduled by the N SCIs are used for data transmission, and the target resources in the N resource pools scheduled by the N SCIs can also be used to transmit the same service data.

In order that the SCI of one resource pool can schedule the resources of multiple resource pools (as shown in the embodiment shown in Figure 3a), select the resources with the same time domain on the multiple resource pools (some or all of the multiple resource pools can be selected) , or there are time-domain resources with overlapping time;

If data is transmitted in multiple resource pools at the same time, one SCI can schedule resources of multiple resource pools for transmission at the same time, or multiple SCIs can schedule resources of one resource pool for transmission when the SCI indicates the correlation (as shown in the figure). In the embodiment shown in 3b, multiple resource pools transmit data/TB belonging to one service: In the above, in the case of performing data transmission through the target resources in the N resource pools scheduled by one SCI, the N The SCI corresponding to the physical secondary link shared channel (Pysical Sidelink Share Channel, PSSCH) of the second resource pool in the resource pools carries third indication information, and the third indication information is used to indicate that the N resource pools are used for Transfer across resource pools. Other resource pools in the N resource pools except the second resource pool are used for transmitting PSSCH, or for transmitting PSSCH and the SCI. That is to say, the SCI corresponding to the PSSCH on one resource pool carries the third indication information, indicating that multiple resource pools are scheduled at the same time to perform cross-resource pool transmission, and other scheduled resource pools can only transmit PSSCH, or transmit SCI and PSSCH . In the above, in the case of performing data transmission through the target resources in the N resource pools scheduled respectively by the N SCIs, the SCI corresponding to the PSSCH of each third resource pool in the N resource pools carries the fourth indication information, and the fourth indication information is used to indicate that the transmission on the third resource pool belongs to cross-resource pool transmission.

In the above, the SCI corresponding to the PSSCH of each resource pool carries the fourth indication information, indicating that the transmissions on multiple resource pools are related, that is, indicating that the transmissions on this resource pool belong to the current cross-resource pool transmission;

In the above, when the target resources in the N resource pools are used for data transmission, the transmission power of the fourth resource pool in the N resource pools is adjusted.

Wherein, the fourth resource pool is determined according to the following methods:

It is determined according to the priority of the data packets sent by one or more resource pools in the N resource pools; or, it is determined by the first terminal.

When the first terminal is limited by power and cannot transmit at full power on multiple resource pools at the same time, it can first adjust the transmit power on the resource pool where the data packets with lower priority are located according to the size of the priority, so that the total transmit power satisfies the power constraints. That is, the fourth resource pool may be the resource pool with the lowest priority of the data packets sent in the N resource pools, or the fourth resource pool may be the priority of the data packets sent in the N resource pools is lower than the preset priority Threshold resource pool.

If the priorities of data packets sent by multiple resource pools in the N resource pools are the same, the first terminal itself decides which resource pool to adjust the transmit power first, so that the total transmit power satisfies the power limit condition. The above process is exemplified below.

If UE A (ie the first terminal) communicates with UE B (ie the second terminal), UE B wants UE A to switch the resource pool, for example, to a resource pool capable of high data rate communication, or to detect the first terminal When the available resources in the current resource pool of the user are insufficient, UE B sends first indication information to UE A to instruct UE A to perform resource pool switching, and the first indication information may be carried in DCI, SCI or high-level signaling.

After UE A receives the first indication information, it starts the handover activation timer;

UE A carries one or more of the handover target resource pool identifier, handover activation timer time, formal handover time and handover waiting timer time in the SCI and sends it to UE B;

UE A no longer continues to perform the receiving operation in the symbol or time slot after the handover activation timer expires, until the handover waiting timer expires and/or the higher layer signaling indicates that the handover operation is completed;

UE A does not continue to perform the sending operation until the handover waiting timer expires and/or after receiving feedback from UE B.

After UE B receives UE A's SCI about resource pool handover, UE B continues to communicate with UE A until the time of the handover activation timer expires.

After the official handover time or a period of time notified by UE A (if UE A does not notify the handover time information, UE B decides the handover time by itself), adjust the resource pool that communicates with UE A according to the indication information in the SCI, and wait for the handover timer After the time or after a period of time, continue to perform sending and/or receiving operations related to UE A. In addition, UE B can also send feedback about resource pool switching to UE A, informing UE A that it has switched resource pools.

In the above, after receiving the first indication information, UE A performs handover after time t, and time t is the duration of the switching activation timer, which is related to the processing duration of the current data packet and/or the RF chain processing time.

The first terminal may perform resource pool switching based on the purpose of power saving. If the current resource pool of the first terminal is P1, and if the first terminal needs to save power, P1 may be a resource pool with a long period but sparse resources. When the first terminal needs a lot of resources for data transmission when the service arrives, it can switch P1 to another resource pool P2 with more available resources according to the DCI/SCI/higher layer signaling instruction. If the service ends, the first terminal no longer needs a lot of resources. In order to reduce energy consumption, it needs to switch to a power-saving resource pool, and the resource pool switching can be performed again. The first terminal can switch the resource pool according to the received DCI/SCI/higher layer signaling, or the first terminal decides to switch from one resource pool to another resource pool by itself (in this case, the first terminal determines according to the pre-configuration. target resource pool).

As shown in FIG. 3a, when the first terminal receives the first indication information at time t1, or decides to switch the resource pool by itself, the switch activation timer is started. After the handover activation timer expires, that is, at time t2, the handover action is officially performed, data transmission and reception is stopped, and a handover waiting timer is started. After the handover waiting timer or after receiving the high-level signaling instructing the terminal to complete the handover action, it is deemed that the handover to the target resource pool is made, and this time is time t3. The first terminal starts to perform operations such as sending and receiving data on the new resource pool (ie, the target resource pool).

Figure 3b shows that one PSCCH schedules multiple resource pools for cross-resource pool transmission. The first terminal uses the three resource pools to transmit the same service data. The first terminal performs joint detection (sensing) across resource pools in its multiple resource pools, detects whether there is resource reservation information in the same resource pool and across resource pools, obtains a joint detection result, and then performs unified detection on the occupied resources. Exclude, and get a total set of candidate resources. The three resource pools jointly perform resource selection, and select the same or overlapping time domain resources on the three resource pools.

As shown in Figure 3b, during transmission, the SCI corresponding to the PSSCH in P2 carries the resources scheduled in the other two P1 and P3 for cross-resource pool transmission. The time domain resources and/or some necessary configurations on the transmission resources in P1 and P3 are consistent with those in P2. The transmissions on P1 and P3 may not carry PSCCH, and the PSCCH on P2 uniformly indicates scheduling.

Figure 3c shows that multiple PSCCHs each schedule each resource pool for cross-resource pool transmission. The first terminal uses the three resource pools to transmit the same service data. The first terminal performs independent detection in multiple resource pools (sensing): the first terminal performs detection in the first resource pool, acquires the first detection result, performs detection in the second resource pool, acquires the second detection result, and Perform detection in the third resource pool, obtain the third detection result, etc., and then perform independent resource exclusion to establish respective candidate resource sets (here, joint detection (sensing), resource exclusion, and candidate resource set establishment can also be performed), Finally (for the convenience of SCI indicating that transmissions on multiple resource pools have related relationships and/or the same service data and/or the same TB, etc.), resource selection is jointly performed across resource pools.

During transmission, the three resource pools are not restricted to select the same or overlapping time-frequency resources. Therefore, the transmission on each pool needs to carry SCI information, and the resource selection and configuration related to the transmission on this resource pool are separately indicated, such as modulation and Coding scheme (Modulation and coding scheme, MCS), demodulation reference signal (Demodulation Reference Signal, DMRS) configuration, etc. The SCI carried by the transmissions on the two resource pools transmitted later in time will carry additional indication information to point to the earliest transmission to indicate that the transmissions on the two resource pools also belong to this cross-resource pool transmission. The above does not limit It must be a related indication in time, and it can also be an indication of other domains or related relationships.

Figure 3d shows that the first terminal can perform resource reservation across resource pools when multiple resource pools are configured for transmission. The first terminal may reserve resources on the resource pool P1 across resource pools through an SCI instruction in the case of insufficient P2 resources or saving control signaling overhead on another resource pool. In this case, the SCI needs to carry resource information of the target resource pool for reserving resources across resource pools, such as a resource pool identifier.

In Fig. 3b and Fig. 3c, n can be understood as the moment when resource selection is triggered.

In the resource pool switching method in the present application, the first terminal can switch between different resource pools, and the terminal can be expected to obtain optimal performance at different times. In addition, since the first terminal can transmit in multiple resource pools at a certain time, the peak rate of the first terminal can be increased.

Please refer to FIG. 4. FIG. 4 is a flowchart of a method for switching resource pools provided by an embodiment of the present application. The method for switching resource pools is executed by a second terminal, a control node, or a network-side device, including:

Step 301: Send first indication information to a first terminal, where the first indication information is used to instruct the first terminal to switch resource pools.

In this embodiment, the first indication information is sent to the first terminal, where the first indication information is used to instruct the first terminal to switch the resource pool, so that the first terminal can switch the current resource pool and improve the The performance of the resource pool used at different times enables the first terminal to obtain optimal performance at different times.

In an embodiment of the present application, the method further includes:

Receive second indication information sent by the first terminal, where the second indication information is used to instruct the first terminal to switch to the target resource pool. The second indication information includes at least one of the following:

the identifier of the target resource pool;

Frequency point information related to the target resource pool.

In an embodiment of the present application, after the sending the first indication information to the first terminal, the method further includes:

receiving handover information sent by the first terminal, where the handover information includes at least one of resource information of the target resource pool, time of a handover activation timer, time of a formal handover, and time of a handover waiting timer;

Sending response information to the first terminal.

In the above, after the first terminal receives the first indication information, in the time period before switching the current resource pool of the first terminal to the target resource pool, it can perform the processing related to the resource switching, for example, start the switching activation timing switch, start the handover wait timer, determine the time for the official handover, and so on. The first terminal may send its own information related to resource switching, that is, switching information, to the opposite terminal that communicates with the first terminal, for example, at least one of the second terminal, the control node, and the network side device. After receiving the handover information, the second terminal, the control node or the network side device sends response information to the first terminal. In the above, the first indication information includes at least one of the following:

the identifier of the target resource pool;

Frequency point information of the target resource pool.

The first indication information is carried in at least one of downlink control information DCI, SCI and high-layer signaling, and the high-layer signaling is radio resource control RRC signaling, or medium access control control element MAC CE signaling.

The first indication information is jointly encoded with resource reservation information of other terminals. The first indication information is indication information for multicast transmission, indication information for unicast transmission, indication information for broadcast transmission, or dedicated indication information. It should be noted that, in the resource pool switching method provided by the embodiments of the present application, the execution subject may be a resource pool switching apparatus, or a control module in the resource pool switching apparatus for executing the resource pool switching method. In the embodiment of the present application, the resource pool switching device provided by the embodiment of the present application is described by taking a method for performing a resource pool switching by a resource pool switching device as an example.

Please refer to FIG. 5. FIG. 5 is a structural diagram of a resource pool switching apparatus provided by an embodiment of the present application. A first resource pool switching apparatus 500, executed by a second terminal, a control node, or a network side device, includes:

The first sending module 501 is configured to send first indication information to a first terminal, where the first indication information is used to instruct the first terminal to switch resource pools.

Further, the first resource pool switching apparatus 500 further includes:

The first receiving module is configured to receive second indication information sent by the first terminal, where the second indication information is used to instruct the first terminal to switch to the target resource pool.

Further, the first resource pool switching apparatus 500 further includes:

The second receiving module is configured to receive the handover information sent by the first terminal, where the handover information includes at least one of resource information of the target resource pool, the time of the handover activation timer, the time of the formal handover, and the time of the handover waiting timer item;

The second sending module is configured to send response information to the first terminal.

Further, the first indication information includes at least one of the following:

the identifier of the target resource pool;

Frequency point information of the target resource pool.

Further, the first indication information is carried in at least one of downlink control information DCI, SCI and high-level signaling, and the high-level signaling is radio resource control RRC signaling, or medium access control control element MAC CE. signaling.

Further, the first indication information is jointly coded with resource reservation information of other terminals.

Further, the first indication information is indication information of multicast transmission, indication information of unicast transmission, indication information of broadcast transmission or dedicated indication information.

The first resource pool switching apparatus 500 in this embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal.

The first resource pool switching apparatus 500 in this embodiment of the present application may be an apparatus having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

The first resource pool switching apparatus 500 provided in this embodiment of the present application can implement each process implemented by the method embodiment of FIG. 4, and achieve the same technical effect. In order to avoid repetition, details are not repeated here.

Please refer to FIG. 6. FIG. 6 is a structural diagram of a first resource pool switching apparatus provided by an embodiment of the present application. The first resource pool switching apparatus 600, executed by a first terminal, includes:

A switching module 601, configured to switch the current resource pool of the first terminal to The target resource pool.

Further, the first resource pool switching apparatus 600 further includes:

a first sending module, configured to send the second indication information to at least one of a second terminal, a control node, and a network-side device, where the second indication information is used to instruct the first terminal to switch to the target resource pool .

Further, the first resource pool switching apparatus 600 further includes:

The first opening module is used to start the switching activation timer;

A suspending module, configured to suspend a data receiving operation and/or a data sending operation if the switching activation timer expires.

Further, the first resource pool switching apparatus 600 further includes:

The second opening module is used to start the switching waiting timer;

A first execution module, configured to execute a data reception operation and/or a data transmission operation if the handover waiting timer expires.

Further, the first resource pool switching apparatus 600 further includes:

The second sending module is configured to send handover information, where the handover information includes at least one of the resource information of the target resource pool, the time of the handover activation timer, the time of the formal handover, and the time of the handover waiting timer.

Further, the first resource pool switching apparatus 600 further includes:

The second executing module is configured to execute a data receiving operation and/or a data sending operation if the response information for the switching information is received.

the identifier of the target resource pool;

Frequency point information related to the target resource pool.

Further, the switching module 601 is configured to switch the current resource pool of the first terminal to the target resource pool according to the pre-configuration of the first terminal if the current resource pool of the first terminal satisfies at least one of the following items :

The CR of the current resource pool is greater than the first threshold;

The CBR of the current resource pool is greater than the second threshold;

The peak rate of the current resource pool is less than a third threshold;

The target resource pool satisfies at least one of the following:

The CR of the target resource pool is not greater than the first threshold;

The CBR of the target resource pool is not greater than the second threshold;

Further, the target resource pool is determined according to the first indication information or the pre-configuration.

Further, the switching module 601 is configured to switch the current resource pool of the first terminal to a default resource pool when the first terminal does not include the target resource pool indicated by the first indication information.

Further, the first resource pool switching apparatus 600 further includes:

A no-switching module, configured to not perform the current resource pool of the first terminal when it is determined according to the received first indication information that the first terminal does not include the target resource pool indicated by the first indication information switch;

or,

Further, the switching module 601 includes:

A determination sub-module, configured to determine whether to switch the current resource pool of the first terminal according to the received first indication information and/or according to the pre-configuration of the first terminal, from the first terminal's current resource pool. The target resource pool is determined in a resource pool set, and the resource pool set includes a plurality of resource pools;

A switching submodule, configured to switch the current resource pool of the first terminal to the target resource pool.

Further, the multiple resource pools satisfy at least one of the following:

Further, the starting positions of frequency resources in different resource pools using frequency division multiplexing in the multiple resource pools are determined by at least one of the following methods:

Indicated by high-level configuration and/or pre-configured start position parameters;

The starting physical resource block PRB of the next resource pool in the frequency domain is the mth PRB after the end of the previous resource pool, m is a positive integer, m is determined by high-level signaling, the next resource pool and the previous resource The pools are different resource pools using frequency division multiplexing among the multiple resource pools.

Further, the first resource pool switching apparatus 600 further includes:

The transmission module is used for data transmission using the target resources in the target resource pool.

Further, the target resource is a resource other than the following resources in the multiple resource pools:

Among the reserved resources of other terminals, the reference signal received power RSRP is greater than the preset threshold.

Further, the reserved resources include resources reserved by other terminals across resource pools in the multiple resource pools.

Further, the reserved resources are determined by the first terminal performing joint detection and/or resource exclusion in the multiple resource pools.

Further, the target resource is a resource in the current time domain resources in the multiple resource pools;

or,

The target resources are the same or overlapping resources in the time domain in the multiple resource pools.

Further, the target resource pool includes N resource pools in the multiple resource pools;

or,

N is an integer greater than 1.

Further, in the case of performing data transmission through the target resources in the N resource pools scheduled by one SCI, the SCI corresponding to the physical secondary link shared channel PSSCH of the second resource pool in the N resource pools carries the third indication information, where the third indication information is used to indicate that the N resource pools are used to perform cross-resource pool transmission.

Further, other resource pools in the N resource pools except the second resource pool are used for transmitting PSSCH, or for transmitting PSSCH and the SCI.

Further, in the case of performing data transmission through the target resources in the N resource pools scheduled respectively by the N SCIs, the SCI corresponding to the PSSCH of each third resource pool in the N resource pools carries a fourth indication information, and the fourth indication information is used to indicate that the transmission on the third resource pool belongs to cross-resource pool transmission.

Further, when the target resources in the N resource pools are used for data transmission, the transmission power of the fourth resource pool in the N resource pools is adjusted.

Further, the fourth resource pool is determined according to the following manner: according to priorities of data packets sent by one or more resource pools in the N resource pools; or, determined by the first terminal.

The apparatus 600 for switching the second resource pool in this embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal.

The apparatus 600 for switching the second resource pool in this embodiment of the present application may be an apparatus having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

The second resource pool switching apparatus 600 provided in this embodiment of the present application can implement each process implemented by the method embodiment in FIG. 2 and achieve the same technical effect. To avoid repetition, details are not described here.

Optionally, as shown in FIG. 7 , an embodiment of the present application further provides a communication device 70, including a processor 71, a memory 72, a program or instruction stored in the memory 72 and executable on the processor 71, For example, when the communication device 70 is a terminal, when the program or instruction is executed by the processor 71, each process of the above-mentioned embodiment of the resource pool switching method shown in FIG. 2 or FIG. 4 can be realized, and the same technical effect can be achieved. When the communication device 70 is a network side device, when the program or instruction is executed by the processor 71, each process of the above-mentioned embodiment of the resource pool switching method shown in FIG. 4 can be realized, and the same technical effect can be achieved. Repeat.

FIG. 8 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.

The terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, a processor 1010 and other components .

Those skilled in the art can understand that the terminal 1000 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 1010 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions. The terminal structure shown in FIG. 8 does not constitute a limitation on the terminal, and the terminal may include more or less components than shown, or combine some components, or arrange different components, which will not be repeated here.

It should be understood that, in this embodiment of the present application, the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042. Such as camera) to obtain still pictures or video image data for processing. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072 . The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

In the embodiment of the present application, the radio frequency unit 1001 receives the downlink data from the network side device, and then processes it to the processor 1010; in addition, sends the uplink data to the base station. Generally, the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1009 may be used to store software programs or instructions as well as various data. The memory 1009 may mainly include a stored program or instruction area and a storage data area, wherein the stored program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like. In addition, the memory 1009 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. For example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

The processor 1010 may include one or more processing units; optionally, the processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs or instructions, etc. Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 1010.

Wherein, the processor 1010 is configured to switch the current resource pool of the first terminal to Switch to the target resource pool.

Further, the radio frequency unit 1001 is configured to send the second indication information to at least one of a second terminal, a control node and a network side device, where the second indication information is used to instruct the first terminal to switch to the target resource pool.

Further, the processor 1010 is configured to start the handover activation timer;

Further, the processor 1010 is configured to start the handover waiting timer;

Further, the radio frequency unit 1001 is configured to send handover information, where the handover information includes at least one of the resource information of the target resource pool, the time of the handover activation timer, the time of the formal handover, and the time of the handover waiting timer .

Further, the processor 1010 is configured to perform a data receiving operation and/or a data sending operation if the response information for the switching information is received.

the identifier of the target resource pool;

Frequency point information related to the target resource pool.

Further, the processor 1010 is configured to switch the current resource pool of the first terminal to the target resource pool according to the preconfiguration of the first terminal if the current resource pool of the first terminal satisfies at least one of the following items :

The CR of the current resource pool is greater than the first threshold;

The CBR of the current resource pool is greater than the second threshold;

The peak rate of the current resource pool is less than a third threshold;

The target resource pool satisfies at least one of the following:

The CR of the target resource pool is not greater than the first threshold;

The CBR of the target resource pool is not greater than the second threshold;

Further, the processor 1010 is configured to switch the current resource pool of the first terminal to a default resource pool when the first terminal does not include the target resource pool indicated by the first indication information.

Further, the processor 1010 is configured to, when it is determined according to the received first indication information that the first terminal does not include the target resource pool indicated by the first indication information, not Switch the resource pool;

or,

Further, the processor 1010 is configured to, according to the received first indication information and/or according to the pre-configuration of the first terminal, determine that the current resource pool of the first terminal is to be switched, from the first terminal The target resource pool is determined in a resource pool set of a terminal, and the resource pool set includes a plurality of resource pools;

Further, the multiple resource pools satisfy at least one of the following:

Further, the radio frequency unit 1001 is configured to use the target resources in the target resource pool for data transmission.

or,

A radio frequency unit 1001, configured to perform data transmission using target resources in the N resource pools scheduled by one SCI;

or,

N is an integer greater than 1.

Further, the fourth resource pool is determined according to the following methods:

Determined according to the priority of the data packets sent by one or more resource pools in the N resource pools;

or,

determined by the first terminal.

The terminal 1000 provided in the above embodiment can implement each process implemented by the method embodiment of FIG. 2 and achieve the same technical effect. To avoid repetition, details are not repeated here.

In another embodiment of the present application, the radio frequency unit 1001 is configured to send first indication information to a first terminal, where the first indication information is used to instruct the first terminal to switch resource pools.

Further, the radio frequency unit 1001 is configured to receive second indication information sent by the first terminal, where the second indication information is used to instruct the first terminal to switch to the target resource pool.

Further, the radio frequency unit 1001 is configured to receive the handover information sent by the first terminal, where the handover information includes resource information of the target resource pool, the time of the handover activation timer, the time of the formal handover, and the time of the handover waiting timer. at least one;

Sending response information to the first terminal.

the identifier of the target resource pool;

Frequency point information of the target resource pool.

The terminal 1000 provided in the foregoing embodiment can implement each process implemented by the method embodiment in FIG. 4 , and achieve the same technical effect. To avoid repetition, details are not repeated here.

Specifically, an embodiment of the present application further provides a network side device. As shown in FIG. 9 , the network side device 1100 includes: an antenna 111 , a radio frequency device 112 , and a baseband device 113 . The antenna 111 is connected to the radio frequency device 112 . In the uplink direction, the radio frequency device 112 receives information through the antenna 111, and sends the received information to the baseband device 113 for processing. In the downlink direction, the baseband device 113 processes the information to be sent and sends it to the radio frequency device 112 , and the radio frequency device 112 processes the received information and sends it out through the antenna 111 .

The above-mentioned frequency band processing apparatus may be located in the baseband apparatus 113 , and the method performed by the network side device in the above embodiments may be implemented in the baseband apparatus 113 . The baseband apparatus 113 includes a processor 114 and a memory 115 .

The baseband device 113 may include, for example, at least one baseband board on which a plurality of chips are arranged. As shown in FIG. 9 , one of the chips is, for example, the processor 114 and is connected to the memory 115 to call the program in the memory 115 to execute The network operations shown in the above method embodiments.

The baseband device 113 may further include a network interface 116 for exchanging information with the radio frequency device 112, and the interface is, for example, a common public radio interface (CPRI for short).

Specifically, the network-side device in the embodiment of the present invention further includes: instructions or programs stored in the memory 115 and executable on the processor 114, and the processor 114 invokes the instructions or programs in the memory 115 to execute the modules shown in FIG. 5 . The implementation method and achieve the same technical effect, in order to avoid repetition, it is not repeated here.

The embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the method embodiment described in FIG. 2 and FIG. 4 is implemented, And can achieve the same technical effect, in order to avoid repetition, it is not repeated here.

Wherein, the processor is the processor in the terminal described in the foregoing embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a network-side device program or instruction to implement the above-mentioned Figure 2, The various processes of the method embodiment shown in FIG. 4 can achieve the same technical effect. In order to avoid repetition, details are not repeated here.

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

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes 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 the reverse order depending on the functions involved. To perform functions, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to some examples may be combined in other examples.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network, etc.) execute the methods described in the various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of this application, without departing from the scope of protection of the purpose of this application and the claims, many forms can be made, which all fall within the protection of this application.

Claims

A resource pool switching method, executed by a first terminal, includes:

When it is determined to switch the current resource pool of the first terminal according to the received first indication information and/or according to the pre-configuration, the current resource pool of the first terminal is switched to the target resource pool.
The method of claim 1, wherein the method further comprises:

Send second indication information to at least one of a second terminal, a control node, and a network-side device, where the second indication information is used to instruct the first terminal to switch to the target resource pool.
The method of claim 1, wherein the method further comprises:

Turn on the switch activation timer;

If the switching activation timer expires, the data reception operation and/or the data transmission operation are suspended.
The method of claim 1, wherein the method further comprises:

Turn on the handover wait timer;

If the handover waiting timer expires, a data reception operation and/or a data transmission operation are performed.
The method of claim 1, wherein the method further comprises:

Handover information is sent, where the handover information includes at least one of resource information of the target resource pool, time of a handover activation timer, time of a formal handover, and time of a handover waiting timer.
The method according to claim 5, wherein after switching the current resource pool of the first terminal to the target resource pool, the method further comprises:

If the response information for the switching information is received, a data receiving operation and/or a data sending operation are performed.
The method according to claim 1, wherein the first indication information includes at least one of the following:

the identifier of the target resource pool;

Frequency point information related to the target resource pool.
The method according to claim 1, wherein the first indication information is carried in at least one of downlink control information DCI, secondary link control information SCI and high layer signaling, and the high layer signaling is radio resource control RRC signaling, or medium access control control element MAC CE signaling.
The method according to claim 1, wherein the first indication information is jointly encoded with resource reservation information of other terminals.
The method according to claim 1, wherein the first indication information is indication information of multicast transmission, indication information of unicast transmission, indication information of broadcast transmission or dedicated indication information.
The method according to claim 1, wherein switching the current resource pool of the first terminal to the target resource pool comprises:

If the current resource pool of the first terminal satisfies at least one of the following, switch the current resource pool of the first terminal to the target resource pool according to the pre-configuration of the first terminal:

The channel occupancy rate CR of the current resource pool is greater than the first threshold;

The channel busy rate CBR of the current resource pool is greater than the second threshold;

The peak rate of the current resource pool is less than a third threshold;

The target resource pool satisfies at least one of the following:

The CR of the target resource pool is not greater than the first threshold;

The CBR of the target resource pool is not greater than the second threshold;

The peak rate of the target resource pool is not less than the third threshold value.
The method according to claim 1, wherein the target resource pool is determined according to the first indication information or the pre-configuration.
The method according to claim 1, wherein when it is determined to switch the current resource pool of the first terminal according to the received first indication information, the current resource pool of the first terminal is switched as the target Resource pools, including:

In the case that the first terminal does not include the target resource pool indicated by the first indication information, the current resource pool of the first terminal is switched to the default resource pool.
The method according to claim 1, wherein the method further comprises: when it is determined according to the received first indication information that the first terminal does not include the target resource pool indicated by the first indication information, not switching the current resource pool of the first terminal;

or,

When it is determined according to the received first indication information that the current resource pool of the first terminal is the same as the target resource pool indicated by the first indication information, the current resource pool of the first terminal is not switched.
The method according to claim 1, wherein, in the case where it is determined to switch the current resource pool of the first terminal according to the received first indication information and/or according to the pre-configuration, the first terminal's current resource pool is The current resource pool is switched to the target resource pool, including:

When it is determined to switch the current resource pool of the first terminal according to the received first indication information and/or according to the pre-configuration of the first terminal, determine the resource pool set of the first terminal from the set of resource pools of the first terminal. the target resource pool, the resource pool set includes a plurality of resource pools;

The current resource pool of the first terminal is switched to the target resource pool.
The method according to claim 15, wherein the plurality of resource pools satisfy at least one of the following:

The time domain resources of at least two resource pools in the multiple resource pools are the same, or the time domain resources overlap or partially overlap;

Frequency division multiplexing is used for frequency resources in different resource pools in the multiple resource pools;

The period of the first resource pool in the plurality of resource pools is greater than the first time threshold;

The number of time domain resources in the first resource pool of the plurality of resource pools in the period is less than the first number threshold.
The method according to claim 16, wherein the starting positions of frequency resources in different resource pools using frequency division multiplexing in the multiple resource pools are determined by at least one of the following methods:

Indicated by high-level configuration and/or pre-configured start position parameters;

The starting physical resource block PRB of the next resource pool in the frequency domain is the mth PRB after the end of the previous resource pool, m is a positive integer, m is determined by high-level signaling, the next resource pool and the previous resource The pools are different resource pools using frequency division multiplexing among the multiple resource pools.
The method according to claim 1, wherein after the switching of the current resource pool of the first terminal to the target resource pool, the method further comprises:

Data transmission is performed using the target resources in the target resource pool.
The method according to claim 18, wherein the target resource is a resource other than the following resources in a plurality of resource pools:

Among the reserved resources of other terminals, the reference signal received power RSRP is greater than the preset threshold.
The method of claim 19, wherein the reserved resources include resources reserved by other terminals across resource pools in the plurality of resource pools.
The method according to claim 19, wherein the reserved resources are determined by the first terminal performing joint detection and/or resource exclusion in the multiple resource pools.
The method according to claim 19, wherein the target resource is a resource in the current time domain resources in the multiple resource pools;

or,

The target resources are the same or overlapping resources in the time domain in the multiple resource pools.
The method of claim 19, wherein the target resource pool comprises N resource pools in the plurality of resource pools;

The data transmission using the target resources in the target resource pool includes:

Use the target resources in the N resource pools scheduled by one SCI to perform data transmission;

or,

Use the target resources in the N resource pools scheduled by the N SCIs to perform data transmission;

N is an integer greater than 1.
The method according to claim 23, wherein, in the case of performing data transmission through the target resources in the N resource pools scheduled by one SCI, the physical secondary chain of the second resource pool in the N resource pools The SCI corresponding to the channel shared channel PSSCH carries third indication information, where the third indication information is used to indicate that the N resource pools are used for cross-resource pool transmission.
The method according to claim 24, wherein other resource pools in the N resource pools except the second resource pool are used for transmitting PSSCH, or for transmitting PSSCH and the SCI.
The method according to claim 24, wherein, in the case of performing data transmission through the target resources in the N resource pools scheduled respectively by the N SCIs, the data transmission rate of each third resource pool in the N resource pools is The SCI corresponding to the PSSCH carries fourth indication information, where the fourth indication information is used to indicate that the transmission on the third resource pool belongs to cross-resource pool transmission.
The method according to claim 24, wherein when the target resources in the N resource pools are used for data transmission, the transmission power of a fourth resource pool in the N resource pools is adjusted.
The method of claim 27, wherein the fourth resource pool is determined in the following manner:

Determined according to the priority of the data packets sent by one or more resource pools in the N resource pools;

or,

determined by the first terminal.
A resource pool switching method, executed by a second terminal, a control node or a network side device, includes:

Send first indication information to the first terminal, where the first indication information is used to instruct the first terminal to switch resource pools.
The method of claim 29, wherein the method further comprises:

Receive second indication information sent by the first terminal, where the second indication information is used to instruct the first terminal to switch to the target resource pool.
The method according to claim 29, wherein after the sending the first indication information to the first terminal, the method further comprises:

receiving handover information sent by the first terminal, where the handover information includes at least one of resource information of the target resource pool, time of a handover activation timer, time of a formal handover, and time of a handover waiting timer;

Sending response information to the first terminal.
The method according to claim 29, wherein the first indication information includes at least one of the following:

The identifier of the target resource pool;

Frequency information of the target resource pool.
The method according to claim 29, wherein the first indication information is carried in at least one of downlink control information, DCI, SCI, and high-layer signaling, and the high-layer signaling is radio resource control (RRC) signaling, or Medium Access Control Control Element MAC CE signaling.
The method according to claim 29, wherein the first indication information is jointly encoded with resource reservation information of other terminals.
The method according to claim 29, wherein the first indication information is indication information of multicast transmission, indication information of unicast transmission, indication information of broadcast transmission or dedicated indication information.
A resource pool switching device, comprising:

A switching module, configured to switch the current resource pool of the first terminal to the target resource pool when it is determined to switch the current resource pool of the first terminal according to the received first indication information and/or according to the pre-configuration .
The apparatus of claim 36, further comprising:

The sending module is configured to send second indication information to at least one of the second terminal, the control node and the network side device, where the second indication information is used to instruct the first terminal to switch to the target resource pool.
A resource pool switching device, comprising:

The sending module is configured to send first indication information to the first terminal, where the first indication information is used to instruct the first terminal to switch the resource pool.
The apparatus of claim 38, further comprising:

A receiving module, configured to receive second indication information sent by the first terminal, where the second indication information is used to instruct the first terminal to switch to the target resource pool.
A terminal, comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, wherein the program or instruction is executed by the processor to implement the procedures as claimed in claims 1 to 1. 28, or, when the program or instruction is executed by the processor, implements the steps of the resource pool switching method according to any one of claims 29 to 35.
A network-side device, comprising a processor, a memory, and a program or instruction stored on the memory and running on the processor, wherein the program or instruction is executed by the processor to achieve as claimed in the claims Steps of the resource pool switching method described in any one of 29 to 35.
A readable storage medium on which a program or an instruction is stored, wherein, when the program or instruction is executed by a processor, the method for implementing the resource pool switching method according to any one of claims 1 to 28 is realized. or, when the program or instruction is executed by the processor, the steps of the resource pool switching method according to any one of claims 29 to 35 are implemented.
A chip, comprising a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used to run a program or an instruction to implement the resource pool according to any one of claims 1 to 28 The steps of the switching method, or, when the program or instructions are executed by the processor, implement the steps of the resource pool switching method according to any one of claims 29 to 35.
A computer program product, wherein the program product is stored in a non-volatile storage medium, the program product being executed by at least one processor to implement the resource pool of any one of claims 1 to 28 The steps of the switching method, or, when the program or instructions are executed by the processor, implement the steps of the resource pool switching method according to any one of claims 29 to 35.