CN116133148A

CN116133148A - Resource reselection method, first communication device and second communication device

Info

Publication number: CN116133148A
Application number: CN202111348850.7A
Authority: CN
Inventors: 刘是枭; 纪子超; 王欢
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2023-05-16

Abstract

The application discloses a resource reselection method, a first communication device and a second communication device, which belong to the technical field of communication, and the resource reselection method in the embodiment of the application comprises the following steps: when the first communication device detects that the second transmission resource of the second communication device collides with the first transmission resource of the first communication device and/or the third transmission resource of the third communication device, the first communication device sends a first resource reselection indication to the second communication device, wherein the first resource reselection indication is used for indicating to trigger the second communication device to perform resource reselection; or the first communication device determines the first detection information or the second detection information, and sends a second resource reselection instruction to the second communication device when the first detection information meets the first condition, or does not send the second resource reselection instruction when the second detection information meets the second condition; the second resource reselection indication is used for indicating to trigger the second communication device to perform resource reselection.

Description

Resource reselection method, first communication device and second communication device

Technical Field

The application belongs to the technical field of communication, and particularly relates to a resource reselection method, first communication equipment and second communication equipment.

Background

In a Sidelink (SL) resource selection enhancement scheme, performing interference detection or resource reservation collision detection on a User Equipment (UE) side or other terminal sides of a receiving (Reception, RX), and if collision between a resource reserved by a transmitting (Transmission, TX) UE or a PSFCH resource associated with a resource reserved by the TX UE and a resource reserved by other UEs, a PSFCH resource associated with a resource reserved by other UEs or an uplink Transmission resource of other UEs is detected, sending signaling to the TX UE for indicating triggering the TX UE to perform resource reselection; and (4) after receiving the signaling, the TX UE performs resource reselection.

In a multicast communication scene or a unicast communication scene, if the resource reselection signaling received by the TX UE is too much in a period of time or at the same moment, excessive resources may need to be reselected, reselection overhead is increased, the resources reselected by the TX UE may collide with other UEs in extreme cases, so that the TX UE can continuously reselect, and finally, no proper resources are used for data transmission, so that packet loss is caused, and the system performance is reduced; for UEs transmitting the reselection signaling, excessive reselection signaling transmission may also cause excessive signaling overhead of the system.

Disclosure of Invention

The embodiment of the application provides a resource reselection method, first communication equipment and second communication equipment, which can solve the problem of high system overhead caused by excessive resource reselection signaling.

In a first aspect, a resource reselection method is provided, the method comprising:

in case the first communication device detects that the second transmission resource of the second communication device collides with the first transmission resource of said first communication device and/or the third transmission resource of the third communication device,

the first communication equipment sends a first resource reselection indication to the second communication equipment, wherein the first resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection; or alternatively, the process may be performed,

the first communication device determines first detection information or second detection information, and sends a second resource reselection instruction to the second communication device when the first detection information meets a first condition, or does not send the second resource reselection instruction when the second detection information meets a second condition; and the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection.

In a second aspect, a resource reselection method is provided, the method comprising:

Under the condition that second communication equipment receives a second resource reselection instruction sent by first communication equipment, the second communication equipment performs resource reselection; the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection; or alternatively, the process may be performed,

under the condition that second communication equipment receives a first resource reselection instruction or a second resource reselection instruction sent by first communication equipment, the second communication equipment determines third detection information or fourth detection information, and performs resource reselection under the condition that the third detection information meets a third condition or does not perform resource reselection under the condition that the fourth detection information meets a fourth condition; the first resource reselection indication is used for indicating to trigger the second communication equipment to reselect resources.

In a third aspect, there is provided a resource reselection apparatus for use with a first communication device, the apparatus comprising:

a first sending module, configured to send a first resource reselection indication to a second communication device when the first communication device detects that a second transmission resource of the second communication device collides with a first transmission resource of the first communication device and/or a third transmission resource of a third communication device, where the first resource reselection indication is used to instruct triggering the second communication device to perform resource reselection; or alternatively, the process may be performed,

A first determining module, configured to determine first detection information or second detection information, and send a second resource reselection indication to the second communication device if the first detection information meets a first condition, or not send the second resource reselection indication if the second detection information meets a second condition; and the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection.

In a fourth aspect, there is provided a resource reselection apparatus for use with a second communication device, the apparatus comprising:

the first reselection module is used for carrying out resource reselection under the condition that the second communication equipment receives a second resource reselection instruction sent by the first communication equipment; the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection; or alternatively, the process may be performed,

the second determining module is used for determining third detection information or fourth detection information when the second communication device receives a first resource reselection instruction or a second resource reselection instruction sent by the first communication device, and performing resource reselection when the third detection information meets a third condition or not performing resource reselection when the fourth detection information meets a fourth condition; the first resource reselection indication is used for indicating to trigger the second communication equipment to reselect resources.

In a fifth aspect, there is provided a first communications device 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 first communication device is provided, comprising a processor and a communication interface, wherein,

the communication interface is used for: when a first communication device detects that a second transmission resource of a second communication device collides with a first transmission resource of the first communication device and/or a third transmission resource of a third communication device, a first resource reselection indication is sent to the second communication device, and the first resource reselection indication is used for indicating to trigger the second communication device to perform resource reselection; or alternatively, the process may be performed,

the processor is configured to: determining first detection information or second detection information;

the communication interface is further for: transmitting a second resource reselection indication to the second communication device if the first detection information satisfies a first condition, or not transmitting a second resource reselection indication if the second detection information satisfies a second condition; and the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection.

In a seventh aspect, there is provided a second communication device 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 second aspect.

In an eighth aspect, a second communication device is provided, including a processor and a communication interface, where the processor is configured to: under the condition that the second communication equipment receives a second resource reselection instruction sent by the first communication equipment, carrying out resource reselection; the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection; or alternatively, the process may be performed,

determining third detection information or fourth detection information under the condition that the second communication equipment receives a first resource reselection instruction or a second resource reselection instruction sent by the first communication equipment, and performing resource reselection under the condition that the third detection information meets a third condition or not performing resource reselection under the condition that the fourth detection information meets a fourth condition; the first resource reselection indication is used for indicating to trigger the second communication equipment to reselect resources.

In a ninth aspect, there is provided a resource reselection system comprising: a first communication device operable to perform the steps of the method as described in the first aspect, and a second communication device operable to perform the steps of the method as described in the second aspect.

In a tenth 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 second aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor, 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 second aspect.

In a twelfth 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 steps of the method as described in the second aspect.

In the embodiment of the application, when the first communication device detects that the second transmission resource of the second communication device collides with the first transmission resource of the first communication device and/or the third transmission resource of the third communication device, the first communication device sends a first resource reselection indication to the second communication device, and the first communication device is indicated to trigger the second communication device to reselect resources; or the first communication device sends a second resource reselection instruction to the second communication device under the condition that the first detection information meets the first condition, and instructs to trigger the second communication device to perform resource reselection, or the first communication device does not send the second resource reselection instruction under the condition that the second detection information meets the second condition, so that the number of times of sending the second resource reselection instruction is limited based on the first detection information and the first condition, or the number of times of sending the second resource reselection instruction is limited based on the second detection information and the second condition, the frequency of sending the resource reselection instruction by the first communication device can be reduced, the frequency of resource reselection by the second communication device is reduced, and the system overhead is reduced.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is one of the flow diagrams of the resource reselection method provided in the embodiments of the present application;

FIG. 3 is a second flow chart of a resource reselection method according to an embodiment of the present disclosure;

fig. 4 is one of signaling interaction diagrams of a resource reselection method provided in an embodiment of the present application;

FIG. 5 is a second signaling interaction diagram of a resource reselection method according to an embodiment of the present disclosure;

FIG. 6 is a third signaling interaction diagram of a resource reselection method according to an embodiment of the present disclosure;

fig. 7 is one of schematic structural diagrams of a resource reselection device provided in an embodiment of the present application;

FIG. 8 is a second schematic diagram of a resource reselection device according to an embodiment of the present disclosure;

fig. 9 is one of schematic structural diagrams of a communication device provided in an embodiment of the present application;

fig. 10 is a second schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

Technical solutions in 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 obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects 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 terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may 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 is noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/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), 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 (SC-carrier Frequency Division Multiple Access, FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described 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.

In this embodiment of the present application, the first communication device and the second communication device may be UE, a control node, or a network side device. For example, the first communication device is an RX UE in SL communication, the second communication device is a TX UE, and for another example, the second communication device is a data receiving end or a data transmitting end of the first communication device.

Here, an example will be described in which an SL link is established between the first communication apparatus and the second communication apparatus. Fig. 1 shows a schematic structure of a wireless communication system to which the embodiments of the present application are applicable. As shown in fig. 1, the wireless communication system includes a first communication device 11, a second communication device 12, and a network-side device 13; the first communication device 11 and the second communication device 12 may perform wireless communication via the network side device 13, for example, the first communication device 11 and the second communication device 12 respectively establish wireless connection with the network side device 13 based on a universal user network interface (Uu) interface, so as to implement communication by means of the network side device 13; direct communication between the first communication device 11 and the second communication device 12 is also possible, for example, the first communication device 11 and the second communication device 12 perform direct PC5 communication based on the SL link without using a cellular network.

The first communication Device 11 and the second communication Device 12 may be a mobile phone, a tablet Computer (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 (mobile personal Computer, UMPC), a mobile internet appliance (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 machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and 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 specific types of the first communication device 11 and the second communication device 12 are not limited in the embodiments of the present application. The network-side device 13 may comprise an access network device or a core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. The access network device may include a base station, a WLAN access point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission receiving point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only the base station in the NR system is described by way of example, and the specific type of the base station is not limited.

The resource reselection method provided by the embodiment of the application is described in detail below through some embodiments and application scenes thereof with reference to the accompanying drawings.

The embodiment of the application provides a resource reselection method, which can be applied to a scene that collision conflict is generated between transmission resources of more than two communication devices in a communication system based on SL technology, and when a first communication device detects that a second transmission resource of a second communication device collides with a first transmission resource of the first communication device and/or a third transmission resource of a third communication device, the first communication device sends a first resource reselection instruction to the second communication device to instruct triggering the second communication device to perform resource reselection; or the first communication device sends a second resource reselection instruction to the second communication device under the condition that the first detection information meets the first condition, and instructs to trigger the second communication device to perform resource reselection, or the first communication device does not send the second resource reselection instruction under the condition that the second detection information meets the second condition, so that the number of times of sending the second resource reselection instruction is limited based on the first detection information and the first condition, or the number of times of sending the second resource reselection instruction is limited based on the second detection information and the second condition, the frequency of sending the resource reselection instruction by the first communication device can be reduced, the frequency of resource reselection by the second communication device is reduced, and the system overhead is reduced.

Fig. 2 is one of flow diagrams of a resource reselection method provided in an embodiment of the present application, as shown in fig. 2, where the method includes:

step 201, when the first communication device detects that a second transmission resource of the second communication device collides with a first transmission resource of the first communication device and/or a third transmission resource of the third communication device, the first communication device sends a first resource reselection indication to the second communication device, where the first resource reselection indication is used for indicating to trigger the second communication device to perform resource reselection; or the first communication device determines the first detection information or the second detection information, and sends a second resource reselection instruction to the second communication device when the first detection information meets the first condition, or does not send the second resource reselection instruction when the second detection information meets the second condition; the second resource reselection indication is used for indicating to trigger the second communication device to perform resource reselection.

It should be noted that the embodiments of the present application may be applied to a communication system based on SL technology, and in particular, in a scenario where transmission resources of two or more communication devices collide. The first communication device and the second communication device perform SL communication based on the SL transmission resource. It will be appreciated that the first communication device and the second communication device may also communicate with a network-side device (e.g. a base station) based on a Uu interface, respectively, or the first communication device and the second communication device may perform SL transmission and Uplink (UL) transmission of the Uu interface, respectively. The first communication device and the second communication device may include, but are not limited to, the types of first communication device 11 and second communication device 12 listed above. For example, the first communication device may be a relatively powerful communication device, such as a scheduling capable UE or a scheduling node.

In practice, the first transmission resources of the first communication device may comprise: the first communication device selects or reserves SL transmission resources, feedback channel resources corresponding to the SL transmission resources selected or reserved by the first communication device, or UL transmission resources of the first communication device.

The second transmission resources of the second communication device may include: and the second communication equipment selects or reserves the auxiliary link SL transmission resource or the feedback channel resource corresponding to the SL transmission resource selected or reserved by the second communication equipment.

The third transmission resource of the third communication device may include: the third communication device selects or reserves SL transmission resources, feedback channel resources corresponding to the SL transmission resources selected or reserved by the third communication device, or uplink transmission resources of the third communication device.

As can be appreciated, SL transmission resources are used for SL transmission between different UEs; uplink transmission resources are used for UL transmissions by the UE and the base station.

Optionally, the first resource reselection indication or the second resource reselection indication includes the first detection information or the second detection information, so that when the second communication device receives the first resource reselection indication or the second resource reselection indication sent by the first communication device, the second communication device can directly acquire the first detection information or the second detection information, so that the second communication device can conveniently make a decision about whether to perform resource reselection.

In this embodiment of the present application, the first detection information or the second detection information may include at least one of the following:

a) First information of the second communication device.

For example, the first information of the second communication device may include at least one of: -quality of service (Quality of Service, qoS) information of the second communication device; location information of the second communication device; terminal capability information of the second communication device; and transmitting information by the service of the second communication equipment.

b) First collision resource information.

For example, the first collision resource information may include at least one of: the number of collision resources in the second transmission resources; the position information of collision resources in the second transmission resources; age information of collision resources in the second transmission resources; the collision resource in the second transmission resource corresponds to a Transport Block (TB) or the retransmission times of the service; the number of second transmission resources; the number of resources other than collision resources in the second transmission resources; and collision types corresponding to the collision resources in the second transmission resources.

c) Second information of the first communication device.

For example, the second information of the first communication device may include at least one of: a resource reselection decision; service priority of the first communication device; feedback information receiving and determining; transmission resources of the first communication device; retransmission mode of the first communication device; the first communication device transmits an accumulated number of resource reselection indications to the second communication device over a first period of time.

d) First channel information.

For example, the first channel information may include: channel busy ratio (channel busy ratio, CBR).

e) Third information of the third communication device.

For example, the third information of the third communication device may include: and the service priority of the third communication equipment.

In the resource reselection method provided by the embodiment of the application, when the first communication device detects that the second transmission resource of the second communication device collides with the first transmission resource of the first communication device and/or the third transmission resource of the third communication device, the first communication device sends a first resource reselection instruction to the second communication device, and the first communication device is instructed to trigger the second communication device to reselect resources; or the first communication device sends a second resource reselection instruction to the second communication device under the condition that the first detection information meets the first condition, and instructs to trigger the second communication device to perform resource reselection, or the first communication device does not send the second resource reselection instruction under the condition that the second detection information meets the second condition, so that the number of times of sending the second resource reselection instruction is limited based on the first detection information and the first condition, or the number of times of sending the second resource reselection instruction is limited based on the second detection information and the second condition, the frequency of sending the resource reselection instruction by the first communication device can be reduced, the frequency of resource reselection by the second communication device is reduced, and the system overhead is reduced.

Here, description will be made of an implementation in which the first detection information satisfies the first condition and the second detection information satisfies the second condition.

1. In the case that the first detection information or the second detection information includes first information of the second communication device, the first detection information satisfies the first condition or the second detection information satisfies the second condition, including at least one of:

1. the QoS information of the second communication device satisfies at least one of:

1) The traffic packet delay budget (Packet Delay Budget, PDB) of the second communication device meets the target threshold.

2) The service reliability requirement of the second communication equipment meets the target threshold;

3) The minimum service communication distance of the second communication equipment meets the target threshold;

4) The service transmission rate of the second communication equipment meets the target threshold;

5) The service priority of the second communication device meets the target threshold.

Specifically, taking the case that the service PDB of the second communication device meets the target threshold as an example, if the service PDB of the second communication device is greater than, less than, not less than, or not greater than a configured threshold, the first communication device sends/does not send a second resource reselection indication to the second communication device. In practice, the following four configurations may be preconfigured and one configuration is activated:

Configuring a, the service PDB of the second communication equipment meets the target threshold, which means that the service PDB of the second communication equipment is larger than or equal to the target threshold; if the service PDB of the second communication device is larger than or equal to the target threshold, the first detection information is judged to meet the first condition, and the first communication device sends a second resource reselection indication to the second communication device.

B, configuring the service PDB of the second communication equipment to meet the target threshold, wherein the service PDB of the second communication equipment is smaller than or equal to the target threshold; if the service PDB of the second communication device is smaller than or equal to the target threshold, the first detection information is judged to meet the first condition, and the first communication device sends a second resource reselection indication to the second communication device.

C, configuring the service PDB of the second communication equipment to meet the target threshold, wherein the service PDB of the second communication equipment is larger than or equal to the target threshold; if the service PDB of the second communication device is greater than or equal to the target threshold, the second detection information is judged to meet the second condition, and the first communication device does not send a second resource reselection indication to the second communication device.

Configuring d, wherein the service PDB of the second communication equipment meets the target threshold, which means that the service PDB of the second communication equipment is smaller than or equal to the target threshold; if the service PDB of the second communication device is smaller than or equal to the target threshold, the second detection information is judged to meet the second condition, and the first communication device does not send a second resource reselection indication to the second communication device.

Illustrating: in the case that the first communication device detects that the first transmission resource collides with the transmission resource of the second communication device and/or the third communication device, the first communication device may determine whether the second resource reselection indication may be sent according to the service PDB of the second communication device.

For the case where configuration a is validated or active: if the service PDB of the second communication device is greater than or equal to the target threshold, determining that the service PDB of the second communication device meets the target threshold, that is, the first detection information meets the first condition, then the first communication device sends a second resource reselection indication to the second communication device, and the second communication device is triggered to reselect resources. If the service PDB of the second communication device is less than or equal to the target threshold, it is determined that the service PDB of the second communication device does not meet the target threshold, that is, the first detection information does not meet the first condition, and then the first communication device does not send a second resource reselection indication to the second communication device.

Alternatively, for the case where configuration b is validated or activated: if the service PDB of the second communication device is smaller than or equal to the target threshold, it is determined that the service PDB of the second communication device meets the target threshold, that is, the first detection information meets the first condition, and the first communication device sends a second resource reselection indication to the second communication device. If the service PDB of the second communication device is greater than or equal to the target threshold, it is determined that the service PDB of the second communication device does not meet the target threshold, that is, the first detection information does not meet the first condition, and then the first communication device does not send a second resource reselection indication to the second communication device.

Alternatively, for the case where configuration c is validated or activated: if the service PDB of the second communication device is greater than or equal to the target threshold, determining that the service PDB of the second communication device meets the target threshold, that is, the second detection information meets the second condition, and then the first communication device does not send a second resource reselection indication to the second communication device. If the service PDB of the second communication device is less than or equal to the target threshold, it is determined that the service PDB of the second communication device does not meet the target threshold, that is, the second detection information does not meet the second condition, and the first communication device may send a second resource reselection indication to the second communication device.

Alternatively, for the case where configuration d takes effect or is active: if the service PDB of the second communication device is smaller than or equal to the target threshold, it is determined that the service PDB of the second communication device meets the target threshold, that is, the second detection information meets the second condition, and the first communication device does not send a second resource reselection indication to the second communication device. If the service PDB of the second communication device is greater than or equal to the target threshold, it is determined that the service PDB of the second communication device does not meet the target threshold, that is, the second detection information does not meet the second condition, and the first communication device may send a second resource reselection indication to the second communication device.

2. The location information of the second communication device satisfies at least one of:

1) The zone identification (zone ID) of the second communication device is the same as the zone ID of the first communication device.

2) The difference or absolute value of the zone ID of the second communication device and the zone ID of the first communication device satisfies a first threshold.

3) The difference in longitude or latitude between the area (zone) where the second communication device is located and the zone where the first communication device is located meets a second threshold.

4) The distance of the second communication device from the first communication device satisfies a third threshold.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to the position information of the second communication device; specific configurations may include any of the following:

if the zone ID of the second communication device is the same as the zone ID of the first communication device, the first communication device determines that the first detection information meets the first condition, and then the first communication device sends a second resource reselection instruction to the second communication device. Or if the zone ID of the second communication device is the same as the zone ID of the first communication device, the first communication device does not send a second resource reselection instruction to the second communication device if the second detection information is determined to satisfy the second condition.

If the difference or absolute value between the zone ID of the second communication device and the zone ID of the first communication device is greater than, less than, not less than or not greater than a first threshold, the first communication device sends/does not send a second resource reselection indication to the second communication device.

If the difference value between the zone where the second communication device is located and the zone where the first communication device is located in longitude or dimension is larger than, smaller than, not smaller than or not larger than a second threshold, the first communication device sends/does not send a second resource reselection indication to the second communication device.

If the distance between the second communication device and the first communication device is greater than, less than, not less than or not greater than a third threshold, the first communication device sends/does not send a second resource reselection indication to the second communication device. Alternatively, the third threshold may be a value of a minimum communication range (min communication range) corresponding to traffic of the second communication device.

3. The terminal capability information of the second communication device meets the target capability requirement; wherein the target capability includes at least one of: the terminal saves power; the capability of terminal cooperative transmission; the ability to partially detect (partial sensing); the ability to randomly select transmission resources.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to the terminal capability information of the second communication device; specific configurations may include any of the following:

if the second communication equipment has or does not have the terminal power saving capability, the first communication equipment sends or does not send a second resource reselection instruction to the second communication equipment; or alternatively, the process may be performed,

if the second communication equipment has or does not have the terminal cooperative transmission capability, the first communication equipment sends or does not send a second resource reselection instruction to the second communication equipment;

if the second communication device has/does not have the capability of the partial sending, the first communication device sends/does not send a second resource reselection instruction to the second communication device;

if the second communication device has/does not have the capability of randomly selecting transmission resources, the first communication device sends/does not send a second resource reselection instruction to the second communication device.

4. The service transmission information of the second communication device satisfies at least one of the following:

1) The retransmission mode of the service transmission configuration of the second communication equipment is a first retransmission mode; the first retransmission method includes: blind retransmission or retransmission based on automatic hybrid retransmission request (Hybrid Automatic Repeat reQuest, HARQ) feedback.

2) The service transmission type of the second communication equipment is a target transmission mode; the target transmission mode comprises at least one of the following: unicast; multicasting; and (5) broadcasting.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to service transmission information of the second communication device; specific configurations may include any of the following:

if the service transmission type of the second communication equipment is unicast/multicast/broadcast, the first communication equipment sends/does not send a second resource reselection indication to the second communication equipment;

if the retransmission mode of the service transmission configuration of the second communication equipment is blind retransmission, the first communication equipment sends/does not send a second resource reselection instruction to the second communication equipment; in practice, if the second communication device supports the inter-terminal collaboration function, the first communication device only sends the second resource reselection indication for the periodic conflict; alternatively, the first communication device may send a second resource reselection indication once for every N collisions, where the second resource reselection indication is sent may be a physical sidelink feedback channel (physical sidelink feedback channel, PSFCH) resource associated with one of the N collisions;

If the retransmission mode of the service transmission configuration of the second communication equipment is retransmission based on HARQ feedback, the first communication equipment sends/does not send a second resource reselection instruction to the second communication equipment;

if PSFCH channel resources are not configured in the resource pool configured for service transmission of the second communication device, the first communication device does not send a second resource reselection indication to the second communication device.

2. In the case that the first detection information or the second detection information includes first collision resource information, the first detection information satisfies a first condition or the second detection information satisfies a second condition, including at least one of:

1. the number of collision resources in the second transmission resources satisfies at least one of:

1) The number of collision resources in the second transmission resources meets a fourth threshold;

2) The ratio of the number of collision resources in the second transmission resources to the second transmission resources meets a fifth threshold;

3) The ratio of the number of collision resources in at least one period of the second transmission resources to the second transmission resources in at least one period satisfies a sixth threshold.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to the number of collision resources in the second transmission resources; for example, one or more of the fourth threshold, the fifth threshold and the sixth threshold are configured by a predefined/protocol specification/higher layer or network side. Specific configurations may include at least one of:

If the number of collision resources in the second transmission resources is greater than or equal to a fourth threshold, the first communication equipment sends a second resource reselection instruction to the second communication equipment;

if the proportion of the collision resources in the second transmission resources to the second transmission resources is greater than or equal to a fifth threshold, the first communication equipment sends a second resource reselection instruction to the second communication equipment;

and if the proportion of the number of collision resources in at least one period in the second transmission resources to the second transmission resources in at least one period is greater than or equal to a sixth threshold, the first communication equipment sends a second resource reselection indication to the second communication equipment.

It should be noted that, if the first detection information does not meet the first condition, the first communication device does not send the second resource reselection instruction to the second communication device; or if the second detection information does not meet the second condition, the first communication device sends a second resource reselection instruction to the second communication device.

2. The location information of the collision resource in the second transmission resource satisfies at least one of:

1) The position information of collision resources in the second transmission resources is a target position;

2) The distance between the collision resource in the second transmission resource and the current moment meets a seventh threshold;

3) The distance between collision resources in the second transmission resources and the current moment meets the seventh threshold, and the number of collision resources in the second transmission resources meets the eighth threshold;

4) And the ratio of the number of collision resources, of which the distance from the collision resource to the current moment in the second transmission resource meets a seventh threshold, to the second transmission resource meets a ninth threshold.

Specifically, the first communication device is preconfigured to determine whether to send the second resource reselection indication according to the position information of the collision resource in the second transmission resource, and the target position may be, for example, a first reserved resource or a last reserved resource of the second communication device; specific configurations may include at least one of:

if the first reserved resource of the second communication device or only the first reserved resource collides with the resource, the first communication device sends/does not send a second resource reselection instruction to the second communication device;

if the collision resource in the second transmission resource is not the first reserved resource of the second communication device, the first communication device does not send a second resource reselection instruction to the second communication device;

if the distance between the collision resource in the second transmission resource and the current moment is larger than, smaller than, not smaller than or not larger than a seventh threshold, the first communication equipment sends/does not send a second resource reselection instruction to the second communication equipment;

If the distance between the collision resource in the second transmission resource and the current moment meets the seventh threshold, the number of the collision resources is larger than, smaller than, not smaller than or not larger than the eighth threshold, and the first communication equipment sends/does not send a second resource reselection instruction to the second communication equipment;

if the ratio of the number of collision resources, of which the distance between the collision resources and the current moment meets the seventh threshold, in the second transmission resources is greater than, less than, not less than or not greater than the ninth threshold, the first communication device sends/does not send a second resource reselection instruction to the second communication device.

3. The aging information of collision resources in the second transmission resources is a target characteristic; the target characteristic includes periodic collisions or aperiodic collisions.

Specifically, the first communication equipment is preconfigured to determine whether to send a second resource reselection instruction according to the aging information of collision resources in the second transmission resources; specific configurations may include at least one of:

if collision resources in the second transmission resources are periodically collided, the first communication equipment sends/does not send a second resource reselection instruction to the second communication equipment;

if collision resources in the second transmission resources are aperiodic collisions, the first communication device sends/does not send a second resource reselection indication to the second communication device.

4. The number of retransmission times of the TB or the service associated with the collision resource in the second transmission resource meets a tenth threshold.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to the TB or the retransmission times of the service associated with the collision resource in the second transmission resource; specific configurations may include:

if the retransmission times of the TB or the service associated with the collision resource in the second transmission resource are larger than, smaller than, not smaller than or not larger than a tenth threshold, the first communication device sends/does not send a second resource reselection indication to the second communication device.

If the number of the same TB or service corresponding to the collision resource in the second transmission resource is larger than, smaller than, not smaller than or not larger than a preset number threshold, the first communication device sends/does not send a second resource reselection instruction to the second communication device. Optionally, the number of the same TB or service corresponding to the collision resource in the second transmission resource may be counted in a preset period of time.

5. The number of second transmission resources meets an eleventh threshold.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection indication according to the quantity of the second transmission resources; specific configurations may include:

For the case that the resources in the second transmission resources are reserved in an aperiodic manner, if N (e.g., 2 or 3) resources are reserved, the first communication device sends/does not send a second resource reselection indication to the second communication device;

for the case that the resources in the second transmission resources are reserved periodically, if the total reserved resources are larger than, smaller than, not smaller than or not larger than N, the first communication equipment sends/does not send a second resource reselection instruction to the second communication equipment;

for the case where the resources in the second transmission resource are reserved for a period, if N (2 or 3) resources are reserved in a single period, the first communication device transmits/does not transmit a second resource reselection indication to the second communication device.

6. The number of resources other than collision resources in the second transmission resource satisfies a twelfth threshold.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to the number of resources except collision resources in the second transmission resources; specific configurations may include at least one of:

if the number of resources except collision resources in the second transmission resources meets a twelfth threshold, the first communication equipment sends/does not send a second resource reselection instruction to the second communication equipment;

If reserved resources which can be used for transmission are reserved after the collision resources in the second transmission resources, the first communication equipment does not send a second resource reselection instruction to the second communication equipment;

if the reserved resources available for transmission are still available after the resources with collision in the second transmission resources and no collision occurs, the first communication device does not send a second resource reselection instruction to the second communication device.

7. The collision type corresponding to the collision resource in the second transmission resource comprises a target collision type.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to a collision type corresponding to collision resources in the second transmission resources; for example, if the collision type corresponding to the collision resource in the second transmission resource is the preconfigured target collision type, the first communication device does not send the second resource reselection indication to the second communication device.

Optionally, the target collision type may include at least one of:

collision generated by partial or total overlapping of the SL transmission resource selected or reserved by the second communication device and the SL transmission resource selected or reserved by the first communication device;

collision between the SL transmission resource selected or reserved by the second communication device and the feedback channel resource corresponding to the SL transmission resource selected or reserved by the first communication device;

Collision generated by partial or total overlapping of SL transmission resources selected or reserved by the second communication device and UL transmission resources of the first communication device;

collision generated by partial or total overlapping of the SL transmission resource selected or reserved by the second communication device and the SL transmission resource selected or reserved by the third communication device;

collision between the SL transmission resource selected or reserved by the second communication device and the feedback channel resource corresponding to the SL transmission resource selected or reserved by the third communication device;

collision generated by partial or total overlapping of SL transmission resources selected or reserved by the second communication device and UL transmission resources of the third communication device;

collision generated by partial or total overlapping of feedback channel resources corresponding to the SL transmission resources selected or reserved by the second communication equipment and the SL transmission resources selected or reserved by the first communication equipment;

collision is generated between feedback channel resources corresponding to the SL transmission resources selected or reserved by the second communication equipment and feedback channel resources corresponding to the SL transmission resources selected or reserved by the first communication equipment;

collision generated by partial or total overlapping of feedback channel resources corresponding to the SL transmission resources selected or reserved by the second communication device and the UL transmission resources of the first communication device;

Collision generated by partial or total overlapping of feedback channel resources corresponding to the SL transmission resources selected or reserved by the second communication equipment and the SL transmission resources selected or reserved by the third communication equipment;

collision is generated between feedback channel resources corresponding to the SL transmission resources selected or reserved by the second communication equipment and feedback channel resources corresponding to the SL transmission resources selected or reserved by the third communication equipment;

and collision generated by partial or total overlapping of feedback channel resources corresponding to the SL transmission resources selected or reserved by the second communication equipment and the UL transmission resources of the third communication equipment.

It should be noted that the above twelve collisions can be summarized as two collision types: collisions due to partial or total overlap of resources, and collisions of resources due to half duplex limitations. The collision type carried in the first resource reselection indication information or the second resource reselection indication information may include the above twelve collision types, or may include only the two collision types.

3. In the case that the first detection information or the second detection information includes second information of the first communication device and the second transmission resource collides with the first transmission resource, the first detection information satisfies a first condition or the second detection information satisfies a second condition, including at least one of:

1. The resource reselection decision is a target reselection decision; the target reselection decision is to indicate whether the first communication device decides to perform a resource reselection.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to the resource reselection decision of the first communication device; specific configurations may include: if the resource reselection decision of the first communication device decides to perform resource reselection for the first communication device, the first communication device does not send a second resource reselection instruction to the second communication device.

2. The size relation between the service priority of the second communication device and the service priority of the first communication device satisfies a target relation, or the difference value or the absolute value of the difference value between the service priority of the first communication device and the service priority of the second communication device satisfies a thirteenth threshold.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to the service priority of the second communication device and the service priority of the first communication device; specific configurations may include at least one of:

1) If the size relation between the service priority of the second communication device and the service priority of the first communication device meets the target relation, the first communication device sends/does not send a second resource reselection instruction to the second communication device;

For example, if the traffic priority of the first communication device is greater than, equal to, less than, no greater than, or no less than the traffic priority of the second communication device, the first communication device sends/does not send a second resource reselection indication to the second communication device.

For another example, if the traffic priority of the first communication device is less than the traffic priority of the second communication device, the first communication device does not send a second resource reselection indication to the second communication device.

2) If the difference between the traffic priority of the first communication device and the traffic priority of the second communication device, or the absolute value of the difference is greater than, less than, not less than, or not greater than the thirteenth threshold, the first communication device sends/does not send a second resource reselection indication to the second communication device.

For example, if the difference between the service priority of the first communication device and the service priority of the second communication device or the absolute value of the difference is less than or equal to a thirteenth threshold, the first communication device does not send a second resource reselection indication to the second communication device;

for another example, if the traffic priority of the first communication device is less than the traffic priority of the second communication device and the difference or the absolute value of the difference between the traffic priority of the first communication device and the traffic priority of the second communication device is less than or equal to a thirteenth threshold, the first communication device does not send a second resource reselection indication to the second communication device.

3. The feedback information receiving decision is a target feedback decision; the target feedback decision is to indicate whether the first communication device decides to receive HARQ feedback information on feedback channel resources associated with SL transmission resources selected or reserved by the first communication device.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to the feedback information receiving decision of the first communication device; specific configurations may include:

if the feedback information of the first communication device is received and decided as: the first communication device decides not to receive HARQ feedback information on feedback channel resources associated with SL transmission resources selected or reserved by the first communication device, and the first communication device does not send a second resource reselection indication to the second communication device.

4. The number of resources other than the resources colliding with the second communication device in the transmission resources of the first communication device satisfies the fourteenth threshold.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to the quantity of resources except the resources colliding with the second communication device in the transmission resources of the first communication device; specific configurations may include:

If the number of resources except the resources colliding with the second communication device in the transmission resources of the first communication device is smaller than a fourteenth threshold, the first communication device does not send a second resource reselection instruction to the second communication device.

For example, if the number of resources except the resources colliding with the second communication device in the transmission resources of the first communication device is zero, that is, the number of available resources except the resources colliding with the second communication device in the transmission resources of the first communication device is not equal to the number of available resources, the first communication device does not send a second resource reselection instruction to the second communication device;

for another example, if there are no resources available for transmission after the resources colliding with the second communication device in the transmission resources of the first communication device, the first communication device does not send a second resource reselection indication to the second communication device;

also for example, if the number of resources available for transmission after the resource colliding with the second communication device in the transmission resources of the first communication device is less than or equal to the fourteenth threshold, the first communication device does not send a second resource reselection indication to the second communication device.

Alternatively, if the PSFCH resource is not configured in the resource pool where the first communication device is located, the first communication device may not send the second resource reselection indication to the second communication device.

5. The retransmission mode of the first communication equipment is a second retransmission mode; wherein, the second retransmission method includes: blind retransmissions or retransmissions based on HARQ feedback.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection instruction according to a retransmission mode of the first communication device; specific configurations may include:

if the retransmission mode of the first communication equipment is blind retransmission, the first communication equipment does not send a second resource reselection instruction to the second communication equipment.

If the retransmission mode of the first communication device is blind retransmission, the first communication device needs to send a second resource reselection instruction to the second communication device. It should be noted that, the resource reselection method provided in the embodiment of the present application may also be applied to a data transmission scenario based on blind retransmission.

6. The first communication device sends a resource reselection indication to the second communication device for a first period of time for a cumulative number of times that satisfies a fifteenth threshold.

Specifically, the first communication device is preconfigured to determine whether to send a second resource reselection indication according to the accumulated times of the first communication device sending the resource reselection indication to the second communication device in a first time period; specific configurations may include: if the accumulated number of times of the resource reselection indication sent by the first communication device to the second communication device in the first time period is greater than, less than, not less than or not greater than a fifteenth threshold, the first communication device sends/does not send the second resource reselection indication to the second communication device.

For example, if the cumulative number of times the first communication device sends the resource reselection indication to the second communication device in the first time period is greater than the fifteenth threshold, the first communication device does not send the second resource reselection indication to the second communication device.

4. In the case where the first detection information or the second detection information includes the first channel information, the first detection information satisfying the first condition or the second detection information satisfying the second condition may include: the CBR meets the sixteenth threshold.

Specifically, the first communication device is preconfigured to determine whether to transmit the second resource reselection indication according to the CBR in the channel.

For example, if CBR in the channel is greater than, less than, not less than, or not greater than a sixteenth threshold, the first communication device sends/does not send a second resource reselection indication to the second communication device.

5. In the case where the first detection information or the second detection information includes third information of a third communication device and the second transmission resource collides with the third transmission resource, the first detection information satisfying the first condition or the second detection information satisfying the second condition may include: the relation between the service priority of the second communication device and the service priority of the third communication device satisfies a seventeenth threshold.

Specifically, the first communication device is preconfigured to determine whether to send the second resource reselection indication according to the relation between the service priority of the second communication device and the service priority of the third communication device.

For example, if the service priority of the third communication device is less than or equal to the service priority of the second communication device, or the difference value or the absolute value difference value between the service priority of the third communication device and the service priority of the second communication device is less than or equal to a seventeenth threshold value, the first communication device does not send a second resource reselection indication to the second communication device; optionally, the first communication device sends a third resource reselection indication to the third communication device, and instructs the third communication device to perform resource reselection.

It should be noted that, in the embodiments of the present application, the threshold values, the condition or rule that the first communication device determines whether to send the reselection indication, and the condition or rule that the second communication device determines whether to perform the resource may be predefined protocol/network side device or higher layer configuration/control node notify the first communication device and the second communication device, and the carrying manner may be information carrying such as RRC/SCI/DCI/MAC CE.

Fig. 3 is a second flowchart of a resource reselection method according to an embodiment of the present application, as shown in fig. 3, where the method includes:

step 301, under the condition that the second communication device receives a second resource reselection instruction sent by the first communication device, the second communication device performs resource reselection; the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection; or under the condition that the second communication equipment receives the first resource reselection instruction or the second resource reselection instruction sent by the first communication equipment, the second communication equipment determines third detection information or fourth detection information, and performs resource reselection under the condition that the third detection information meets a third condition or does not perform resource reselection under the condition that the fourth detection information meets a fourth condition; the first resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection.

It should be noted that the embodiments of the present application may be applied to a communication system based on SL technology, and in particular, in a scenario where transmission resources of two or more communication devices collide. The first communication device and the second communication device perform SL communication based on the SL transmission resource.

In the embodiment of the application, when the first communication device detects that the second transmission resource of the second communication device collides with the first transmission resource of the first communication device and/or the third transmission resource of the third communication device, the first communication device sends a first resource reselection instruction to the second communication device, and the first resource reselection instruction triggers the second communication device to reselect resources; or the first communication equipment determines first detection information or second detection information, and sends a second resource reselection instruction to the second communication equipment under the condition that the first detection information meets a first condition, and the second communication equipment is triggered to perform resource reselection; or, if the second detection information satisfies the second condition, the second resource reselection instruction is not transmitted.

Under the condition that the second communication equipment receives a second resource reselection instruction sent by the first communication equipment, the second communication equipment performs resource reselection; or when the second communication device receives the first resource reselection instruction or the second resource reselection instruction sent by the first communication device, the second communication device determines third detection information or fourth detection information, performs resource reselection when the third detection information meets a third condition, or does not perform resource reselection when the fourth detection information meets a fourth condition.

In practice, the first transmission resources of the first communication device may comprise: the first communication device selects or reserves SL transmission resources, feedback channel resources corresponding to the SL transmission resources selected or reserved by the first communication device, or uplink transmission resources of the first communication device. The second transmission resources of the second communication device may include: the second communication device selects or reserves SL transmission resources or feedback channel resources corresponding to the SL transmission resources selected or reserved by the second communication device. The third transmission resource of the third communication device may include: the third communication device selects or reserves SL transmission resources, feedback channel resources corresponding to the SL transmission resources selected or reserved by the third communication device, or uplink transmission resources of the third communication device. As can be appreciated, SL transmission resources are used for SL transmission between different UEs; uplink transmission resources are used for UL transmissions by the UE and the base station.

Optionally, the first detection information or the second detection information may be included in the first resource reselection instruction or the second resource reselection instruction sent by the first communication device, so that when the second communication device receives the first resource reselection instruction or the second resource reselection instruction sent by the first communication device, the first detection information or the second detection information may be directly known, so that the second communication device may conveniently make a decision about whether to perform resource reselection. Specifically, the first detection information or the second detection information includes at least one of: first information of the second communication device; first collision resource information; second information of the first communication device; first channel information; third information of the third communication device. For the explanation and explanation of the first detection information and the second detection information, reference may be made to the explanation of the above embodiments, and for avoiding repetition, the explanation is omitted here.

Optionally, the implementation manner of determining the third detection information or the fourth detection information by the second communication device may include: the second communication equipment acquires the first detection information or the second detection information based on the first resource reselection indication or the second resource reselection indication; the second communication device determines the third detection information or the fourth detection information based on the first detection information or the second detection information.

Optionally, the third detection information or the fourth detection information may include at least one of:

a) Fourth information of the second communication device.

For example, the fourth information of the second communication device may include at least one of: service QoS information of the second communication device; terminal capability information of the second communication device; the service transmission information of the second communication equipment; the number of resources within a resource selection window of the second communication device; the number of resources within the selectable set of resources of the second communication device; and the second communication device receives the accumulated times of the resource reselection instructions sent by the first communication device in the first time period.

b) And second collision resource information.

For example, the second collision resource information may include at least one of: the number of collision resources in the second transmission resources; the position information of collision resources in the second transmission resources; age information of collision resources in the second transmission resources; collision resources in the second transmission resources correspond to TB or retransmission times of the service; the number of second transmission resources; the number of resources other than collision resources in the second transmission resources; the number of resources used for the same TB transmission except collision resources in the second transmission resources; collision types corresponding to collision resources in the second transmission resources; and the collision type number corresponding to the collision resource in the second transmission resource.

c) Fifth information of the first communication device.

For example, the fifth information of the first communication device may include at least one of: a resource reselection decision; service priority of the first communication device; feedback information receiving and determining; transmission resources of the first communication device; retransmission scheme of the first communication device.

d) Second channel information.

For example, the second channel information may include CBR.

e) Sixth information of the third communication device.

For example, the sixth information of the third communication device may include a traffic priority of the third communication device.

In the resource reselection method provided by the embodiment of the application, under the condition that the second communication device receives the second resource reselection instruction sent by the first communication device, the second communication device performs resource reselection; or under the condition that the second communication device receives the first resource reselection instruction or the second resource reselection instruction sent by the first communication device, the second communication device determines third detection information or fourth detection information, and performs resource reselection under the condition that the third detection information meets a third condition, or does not perform resource reselection under the condition that the fourth detection information meets a fourth condition, so that the frequency of performing resource reselection based on the first resource reselection instruction or the second resource reselection instruction and the third detection information or the fourth detection information limit is realized, the frequency of performing resource reselection by the second communication device can be reduced, and the system overhead is reduced.

Here, description will be made of an implementation in which the third detection information satisfies the third condition and the fourth detection information satisfies the fourth condition.

1. In the case that the third detection information or the fourth detection information includes fourth information of the second communication device, the third detection information satisfies a third condition or the fourth detection information satisfies a fourth condition, including at least one of:

1) The traffic PDB of the second communication device meets the target threshold.

Specifically, taking the case that the service PDB of the second communication device meets the target threshold as an example, if the service PDB of the second communication device is greater than, less than, not less than, or not greater than a configured threshold, the second communication device performs/does not perform resource reselection. In practice, the following four configurations may be preconfigured and one configuration is activated:

configuring a, the service PDB of the second communication equipment meets the target threshold, namely that the service PDB of the second communication equipment is larger than the target threshold; if the service PDB of the second communication equipment is larger than the target threshold, judging that the third detection information meets a third condition, and then performing resource reselection by the second communication equipment.

B, configuring the service PDB of the second communication equipment to meet the target threshold, wherein the service PDB of the second communication equipment is smaller than or equal to the target threshold; if the service PDB of the second communication equipment is smaller than or equal to the target threshold, judging that the third detection information meets a third condition, and then performing resource reselection by the second communication equipment.

C, configuring the service PDB of the second communication equipment to meet the target threshold, wherein the service PDB of the second communication equipment is larger than the target threshold; if the service PDB of the second communication equipment is larger than the target threshold, judging that the fourth detection information meets a fourth condition, and not performing resource reselection by the second communication equipment.

Configuring d, wherein the service PDB of the second communication equipment meets the target threshold, which means that the service PDB of the second communication equipment is smaller than or equal to the target threshold; if the service PDB of the second communication equipment is smaller than or equal to the target threshold, the fourth detection information is judged to meet the fourth condition, and then the second communication equipment does not conduct resource reselection.

2. The terminal capability information of the second communication device meets the target capability requirement; wherein the target capability includes at least one of: the terminal saves power; the capability of terminal cooperative transmission; the ability to partially detect (partial sensing); the ability to randomly select transmission resources.

Specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to the terminal capability information of the second communication device. Specific configurations may include any of the following:

if the second communication equipment has or does not have the terminal power saving capability, the second communication equipment performs or does not perform resource reselection;

If the second communication equipment has or does not have the terminal cooperative transmission capability, the second communication equipment performs or does not perform resource reselection;

if the second communication equipment has/does not have the capability of the partial sending, the second communication equipment performs/does not perform resource reselection;

and if the second communication equipment has or does not have the capability of randomly selecting transmission resources, the second communication equipment performs or does not perform resource reselection.

3. The service transmission information of the second communication device satisfies at least one of the following:

1) The retransmission mode of the service transmission configuration of the second communication equipment is a first retransmission mode; the first retransmission method includes: blind retransmissions or retransmissions based on HARQ feedback.

Specifically, the second communication device is preconfigured to determine whether to reselect resources according to service transmission information of the second communication device; specific configurations may include any of the following:

if the service transmission type of the second communication equipment is unicast/multicast/broadcast, the second communication equipment performs/does not perform resource reselection;

If the retransmission mode of the service transmission configuration of the second communication equipment is blind retransmission, the second communication equipment performs/does not perform resource reselection; in practice, if the second communication device supports the collaboration function between the terminals, the second communication device performs resource reselection only for the periodic conflict situation;

if the retransmission mode of the service transmission configuration of the second communication equipment is retransmission based on HARQ feedback, the second communication equipment performs/does not perform resource reselection;

if PSFCH channel resources are not configured in the resource pool configured for service transmission of the second communication device, the second communication device does not perform resource reselection.

4. The number of resources within the resource selection window of the second communication device satisfies at least one of:

1) The number of resources in the resource selection window meets an eighteenth threshold;

2) The ratio of the number of resources in the resource selection window to the target number (for example, the total number of resources in X slots) satisfies a nineteenth threshold, and X is an integer;

3) The number of resources for UL transmissions within the resource selection window meets a twentieth threshold;

4) The ratio of the number of resources for UL transmission in the resource selection window to the number of resources in the resource selection window satisfies a twenty-first threshold;

5) The number of resources meeting the HARQ round trip time RTT in the resource selection window meets a second twelve threshold;

6) And the proportion of the number of the resources meeting the HARQ RTT in the resource selection window to the number of the resources in the resource selection window meets a twenty-third threshold.

Specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to the number of resources in a resource selection window of the second communication device; specific configurations may include any of the following:

if the number of the resources in the resource selection window is less than the eighteenth threshold, the second communication equipment does not perform resource reselection;

if the proportion of the number of resources in the resource selection window to the target number (for example, the total number of resources in the X slots) is lower than the nineteenth threshold, the second communication device does not perform resource reselection;

if the number of resources for UL transmission in the resource selection window is higher than the twentieth threshold, the second communication device does not perform resource reselection;

if the proportion of the number of resources used for UL transmission in the resource selection window to the number of resources in the resource selection window is higher than a twenty-first threshold, the second communication equipment does not perform resource reselection;

if the number of the resources meeting the HARQ round trip time RTT in the resource selection window is lower than a second threshold, the second communication equipment does not perform resource reselection;

If the proportion of the number of the resources meeting the HARQ RTT in the resource selection window to the number of the resources in the resource selection window is lower than a twenty-third threshold, the second communication equipment does not conduct resource reselection.

5. The number of resources within the selectable set of resources of the second communication device satisfies at least one of:

1) The number of resources in the set of selectable resources meets a twenty-fourth threshold;

2) The ratio of the number of resources in the selectable resource set to the number of resources in the resource selection window meets a twenty-fifth threshold;

3) The number of resources meeting the HARQ RTT in the resources in the selectable resource set meets a twenty-sixth threshold;

4) The ratio of the number of resources satisfying the HARQ RTT in the resources in the selectable resource set to the number of resources in the selectable resource set satisfies a twenty-seventh threshold.

Specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to the number of resources in the selectable resource set of the second communication device; specific configurations may include any of the following:

if the number of resources except collision resources in the selectable resource set is lower than a twenty-fourth threshold, the second communication device does not perform resource reselection;

if the proportion of the number of the resources except collision resources in the selectable resource set to the number of the resources in the resource selection window is lower than a twenty-fifth threshold, the second communication equipment does not perform resource reselection;

If the quantity of the resources lower than the HARQ RTT in the resources except collision resources in the selectable resource set meets a twenty-sixth threshold, the second communication equipment does not perform resource reselection;

and if the proportion of the number of the resources meeting the HARQ RTT in the resources except collision resources in the selectable resource set to the number of the resources in the selectable resource set is lower than a twenty-seventh threshold, the second communication equipment does not perform resource reselection.

6. The accumulated number of resource reselection instructions sent by the first communication device and received by the second communication device in the first time period meets a fifteenth threshold.

Specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to the accumulated times of the resource reselection instructions sent by the first communication device and received by the second communication device in the first time period.

Specific configurations may include: and if the accumulated number of the resource reselection instructions sent by the first communication device and received by the second communication device in the first time period is greater than, less than, not less than or not greater than a fifteenth threshold, performing/not performing resource reselection by the second communication device.

For example, if the cumulative number of the resource reselection instructions received by the second communication device and sent by the first communication device in the first time period is greater than a fifteenth threshold, the second communication device does not perform resource reselection.

2. In the case that the third detection information or the fourth detection information includes the second collision resource information, the third detection information satisfies the third condition or the fourth detection information satisfies the fourth condition, including at least one of:

Specifically, the second communication equipment is preconfigured to determine whether to reselect the resources according to the number of collision resources in the second transmission resources; specific configurations may include at least one of:

if the number of collision resources in the second transmission resources is greater than or equal to a fourth threshold, the second communication equipment performs resource reselection;

if the proportion of the collision resources in the second transmission resources to the second transmission resources is greater than or equal to a fifth threshold, the second communication equipment performs resource reselection;

And if the proportion of the number of collision resources in at least one period in the second transmission resources to the second transmission resources in at least one period is greater than or equal to a sixth threshold, the second communication equipment performs resource reselection.

Specifically, the second communication device is preconfigured to determine whether to reselect resources according to the position information of collision resources in the second transmission resources, and the target position is, for example, a first reserved resource of the second communication device; specific configurations may include at least one of:

if the first reserved resource of the second communication device or only the first reserved resource collides with the resource, the second communication device performs/does not perform resource reselection;

If the collision resource in the second transmission resource is not the first reserved resource of the second communication equipment, the second communication equipment does not perform resource reselection;

if the distance between the collision resource in the second transmission resource and the current moment is larger, smaller, not smaller or not larger than a seventh threshold, the second communication equipment performs/does not perform resource reselection;

if the distance between the collision resource in the second transmission resource and the current moment meets the number of the collision resources of the seventh threshold, which is larger than, smaller than, not smaller than or not larger than the eighth threshold, the second communication equipment performs/does not perform resource reselection;

and if the ratio of the number of collision resources, of which the distance between the collision resources and the current moment meets the seventh threshold, in the second transmission resources to the second transmission resources is larger than, smaller than, not smaller than or not larger than the ninth threshold, performing/not performing resource reselection by the second communication equipment.

Specifically, the second communication equipment is preconfigured to determine whether to reselect the resources according to the aging information of collision resources in the second transmission resources; specific configurations may include at least one of:

If collision resources in the second transmission resources are periodically collided, the second communication equipment performs/does not perform resource reselection;

for example, if the collision resource in the second transmission resource is a resource in the first period in the second transmission resource, the second communication device performs resource reselection; for another example, if the collision resource in the second transmission resource is a resource in the first N periods in the second transmission resource, the second communication device performs resource reselection

If collision resources in the second transmission resources are aperiodic collisions, the second communication device performs/does not perform resource reselection.

Specifically, the second communication equipment is preconfigured to determine whether to perform resource reselection according to the TB or the retransmission times of the service associated with the collision resource in the second transmission resource; specific configurations may include:

and if the retransmission times of the TB or the service associated with the collision resource in the second transmission resource are larger than, smaller than, not smaller than or not larger than a tenth threshold, the second communication equipment performs/does not perform resource reselection.

5. The number of second transmission resources meets an eleventh threshold.

Specifically, the second communication equipment is preconfigured to determine whether to perform resource reselection according to the number of the second transmission resources; specific configurations may include:

For the case that the resources in the second transmission resource are reserved in an aperiodic mode, if N (e.g., 2 or 3) resources are reserved, the second communication device performs/does not perform resource reselection; for example, the eleventh threshold has a value of N;

for the case that the resources in the second transmission resources are reserved periodically, if the total reserved resources are larger than, smaller than, not smaller than or not larger than N, the second communication equipment performs/does not perform resource reselection;

for the case where the resources in the second transmission resource are reserved for a period, if N (2 or 3) resources are reserved in a single period, the second communication device performs/does not perform resource reselection.

Specifically, the second communication equipment is preconfigured to determine whether to reselect the resources according to the quantity of the resources except collision resources in the second transmission resources; specific configurations may include at least one of:

if the number of resources except collision resources in the second transmission resources meets a twelfth threshold, the second communication equipment performs/does not perform resource reselection;

if reserved resources which can be used for transmission are reserved after the collision resources in the second transmission resources, the second communication equipment does not perform resource reselection;

If the reserved resources available for transmission are still available after the resources with collision in the second transmission resources and no collision occurs, the second communication device does not perform resource reselection.

Specifically, the second communication equipment is preconfigured to determine whether to reselect the resources according to the collision type corresponding to the collision resources in the second transmission resources; for example, if the collision type corresponding to the collision resource in the second transmission resource is the preconfigured target collision type, the second communication device does not perform resource reselection. Optionally, collision resources in the second transmission resources are not used for data transmission.

Optionally, the target collision type may include at least one of:

It should be noted that the above twelve collision types can be summarized as two collision types: 1) Collision due to partial or total overlap of resources, and 2) collision of resources due to half duplex limitations. The collision types carried in the first resource reselection indication information or the second resource reselection indication information may include the above twelve collision types, or may include only the two collision types.

8. The number of resources for the same TB transmission except collision resources in the second transmission resource satisfies a twenty-eighth threshold;

specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to the number of resources used for the same TB transmission except collision resources in the second transmission resources; specific configurations may include at least one of:

If the number of resources for the same TB transmission except collision resources in the second transmission resource meets the twenty-eighth threshold, the second communication device performs/does not perform resource reselection.

9. The number of collision types corresponding to the collision resources in the second transmission resources is greater than, less than, not less than or not greater than a twenty-ninth threshold.

Specifically, the second communication equipment is preconfigured to determine whether to reselect the resources according to the number of collision types corresponding to the collision resources in the second transmission resources; specific configurations may include at least one of:

and if the number of collision types corresponding to the collision resources in the second transmission resources is larger than, smaller than, not smaller than or not larger than a twenty-ninth threshold, the second communication equipment performs/does not perform resource reselection.

3. In the case that the third detection information or the fourth detection information includes fifth information of the first communication device and the second transmission resource collides with the first transmission resource, the third detection information satisfies a third condition or the fourth detection information satisfies a fourth condition, including at least one of:

Specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to the resource reselection decision of the first communication device; specific configurations may include: if the resource reselection decision of the first communication device decides to perform resource reselection for the first communication device, the second communication device does not perform resource reselection.

Specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to the service priority of the second communication device and the service priority of the first communication device; specific configurations may include at least one of:

1) If the size relation between the service priority of the second communication device and the service priority of the first communication device meets the target relation, the second communication device performs/does not perform resource reselection;

for example, if the traffic priority of the first communication device is greater than, equal to, less than, no greater than, or no less than the traffic priority of the second communication device, then the second communication device performs/does not perform resource reselection.

For another example, if the service priority of the first communication device is less than the service priority of the second communication device, the second communication device does not perform resource reselection.

2) If the difference between the service priority of the first communication device and the service priority of the second communication device, or the absolute value of the difference is greater than, less than, not less than, or not greater than the thirteenth threshold, the second communication device performs/does not perform resource reselection.

For example, if the difference between the service priority of the first communication device and the service priority of the second communication device or the absolute value of the difference is less than or equal to a thirteenth threshold, the second communication device does not perform resource reselection;

for another example, if the traffic priority of the first communication device is less than the traffic priority of the second communication device and the difference or the absolute value of the difference between the traffic priority of the first communication device and the traffic priority of the second communication device is less than or equal to a thirteenth threshold, the second communication device does not perform the resource reselection.

Specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to the feedback information receiving decision of the first communication device; specific configurations may include:

if the feedback information of the first communication device is received and decided as: the first communication device decides not to receive HARQ feedback information on feedback channel resources associated with SL transmission resources selected or reserved by the first communication device, and the second communication device does not perform resource reselection.

Specifically, the second communication device is preconfigured to determine whether to reselect resources according to the quantity of resources except the resources colliding with the second communication device in the transmission resources of the first communication device; specific configurations may include:

if the number of the resources except the resources colliding with the second communication device in the transmission resources of the first communication device is smaller than the fourteenth threshold, the second communication device does not perform resource reselection.

For example, if the number of resources except the resources colliding with the second communication device in the transmission resources of the first communication device is zero, that is, the number of available resources except the resources colliding with the second communication device in the transmission resources of the first communication device is not available, the second communication device does not perform resource reselection;

For another example, if there is no resource available for transmission after the resource colliding with the second communication device in the transmission resources of the first communication device, the second communication device does not perform resource reselection;

for example, if the number of resources available for transmission after the collision with the second communication device in the transmission resources of the first communication device is less than or equal to the fourteenth threshold, the second communication device does not perform the resource reselection.

Alternatively, if the PSFCH resource is not configured in the resource pool where the first communication device is located, the second communication device may not perform resource reselection.

Specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to the retransmission mode of the first communication device; specific configurations may include:

if the retransmission mode of the first communication equipment is blind retransmission, the second communication equipment does not perform resource reselection.

4. In the case that the third detection information or the fourth detection information includes the second channel information, the third detection information satisfying the third condition or the fourth detection information satisfying the fourth condition may include: the CBR meets the sixteenth threshold.

Specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to CBR in the channel.

For example, if the CBR in the channel is below the sixteenth threshold, the second communication device performs a resource reselection.

5. In the case that the third detection information or the fourth detection information includes sixth information of the third communication device and the second transmission resource collides with the third transmission resource, the third detection information satisfying the third condition or the fourth detection information satisfying the fourth condition may include: the relation between the service priority of the second communication device and the service priority of the third communication device satisfies a seventeenth threshold.

Specifically, the second communication device is preconfigured to determine whether to perform resource reselection according to the relation between the service priority of the second communication device and the service priority of the third communication device.

For example, if the relation between the service priority of the second communication device and the service priority of the third communication device meets the seventeenth threshold, the second communication device performs resource reselection;

if the service priority of the third communication device is less than or equal to the service priority of the second communication device, or the difference value or the absolute value between the service priority of the third communication device and the service priority of the second communication device is less than or equal to a seventeenth threshold value, the second communication device does not perform resource reselection.

It should be noted that, in the embodiment of the present application, each threshold value may be a predefined protocol/network side device or a higher layer configuration/control node, and the carrying manner may be information carrying such as RRC/SCI/DCI/MAC CE.

The signaling interaction procedure of the first communication device and the second communication device is explained below.

Fig. 4 is one of signaling interaction diagrams of a resource reselection method provided in an embodiment of the present application, where the method is performed by a first communication device and a second communication device in cooperation, as shown in fig. 4, and the method includes:

step 401, in a case that the first communication device detects that the second transmission resource of the second communication device collides with the first transmission resource of the first communication device and/or the third transmission resource of the third communication device, the first communication device determines the first detection information or the second detection information.

Step 402, the first communication device sends a second resource reselection indication to the second communication device when the first detection information meets a first condition, or does not send the second resource reselection indication when the second detection information meets a second condition; and the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection.

Step 403, under the condition that the second communication device receives the second resource reselection instruction sent by the first communication device, the second communication device performs resource reselection; and the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection.

Fig. 5 is a second signaling interaction diagram of a resource reselection method provided in an embodiment of the present application, where the method is performed by a first communication device and a second communication device in cooperation, as shown in fig. 5, and the method includes:

step 501, in a case that the first communication device detects that a second transmission resource of the second communication device collides with a first transmission resource of the first communication device and/or a third transmission resource of the third communication device, the first communication device determines first detection information or second detection information.

Step 502, the first communication device sends a second resource reselection instruction to the second communication device when the first detection information meets a first condition, or does not send the second resource reselection instruction when the second detection information meets a second condition; and the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection.

Step 503, when the second communication device receives the second resource reselection instruction sent by the first communication device, the second communication device determines third detection information or fourth detection information, and performs resource reselection when the third detection information meets a third condition, or does not perform resource reselection when the fourth detection information meets a fourth condition; the first resource reselection indication is used for indicating to trigger the second communication equipment to reselect resources.

Fig. 6 is a third signaling interaction diagram of a resource reselection method provided in an embodiment of the present application, where the method is performed by a first communication device and a second communication device in cooperation, as shown in fig. 6, and the method includes:

step 601, when a first communication device detects that a second transmission resource of a second communication device collides with a first transmission resource of the first communication device and/or a third transmission resource of a third communication device, the first communication device sends a first resource reselection indication to the second communication device, where the first resource reselection indication is used for indicating to trigger the second communication device to perform resource reselection.

Step 602, when the second communication device receives the first resource reselection instruction sent by the first communication device, the second communication device determines third detection information or fourth detection information, and performs resource reselection when the third detection information meets a third condition, or does not perform resource reselection when the fourth detection information meets a fourth condition; the first resource reselection indication is used for indicating to trigger the second communication equipment to reselect resources.

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

Fig. 7 is one of schematic structural diagrams of a resource reselection apparatus provided in the embodiment of the present application, which is applied to a first communication device, as shown in fig. 7, where the resource reselection apparatus 700 includes:

a first sending module 701, configured to send a first resource reselection indication to a second communication device when the first communication device detects that a second transmission resource of the second communication device collides with a first transmission resource of the first communication device and/or a third transmission resource of a third communication device, where the first resource reselection indication is used to instruct triggering the second communication device to perform resource reselection; or alternatively, the process may be performed,

a first determining module 702, configured to determine first detection information or second detection information, and send a second resource reselection indication to the second communication device if the first detection information meets a first condition, or not send the second resource reselection indication if the second detection information meets a second condition; and the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection.

In the resource reselection device provided by the embodiment of the application, when the first communication device detects that the second transmission resource of the second communication device collides with the first transmission resource of the first communication device and/or the third transmission resource of the third communication device, a first resource reselection instruction is sent to the second communication device, and the second communication device is triggered to reselect the resource; or sending a second resource reselection instruction to the second communication device when the first detection information meets the first condition, and indicating to trigger the second communication device to perform resource reselection, or not sending the second resource reselection instruction when the second detection information meets the second condition, so that the number of times of sending the second resource reselection instruction is limited based on the first detection information and the first condition, or the number of times of sending the second resource reselection instruction is limited based on the second detection information and the second condition, and the frequency of sending the resource reselection instruction by the first communication device can be reduced, the frequency of resource reselection by the second communication device is reduced, and the system overhead is reduced.

Optionally, the first transmission resource includes: the SL transmission resource selected or reserved by the first communication device, the feedback channel resource corresponding to the sub-link SL transmission resource selected or reserved by the first communication device, or the uplink UL transmission resource of the first communication device;

The second transmission resource includes: the SL transmission resource selected or reserved by the second communication device or the feedback channel resource corresponding to the SL transmission resource selected or reserved by the second communication device;

the third transmission resource includes: the third communication device selects or reserves SL transmission resources, feedback channel resources corresponding to the SL transmission resources selected or reserved by the third communication device, or uplink transmission resources of the third communication device.

Optionally, the first detection information or the second detection information includes at least one of the following:

first information of the second communication device;

first collision resource information;

second information of the first communication device;

first channel information;

third information of the third communication device.

Optionally, the first information of the second communication device includes at least one of the following:

service quality of service, qoS, information for the second communication device;

location information of the second communication device;

terminal capability information of the second communication device;

and transmitting information by the service of the second communication equipment.

Optionally, in the case that the first detection information includes first information of the second communication device, the first detection information satisfies a first condition, including at least one of:

The QoS information of the second communication device satisfies at least one of: the service packet delay budget PDB of the second communication device meets a target threshold; the service reliability requirement of the second communication equipment meets a target threshold; the service minimum communication distance of the second communication equipment meets a target threshold; the service transmission rate of the second communication equipment meets a target threshold; the service priority of the second communication equipment meets a target threshold;

the location information of the second communication device satisfies at least one of: the zone identification zone ID of the second communication device is the same as the zone ID of the first communication device; the difference or absolute value between the zone ID of the second communication device and the zone ID of the first communication device meets a first threshold; the difference value of the zone where the second communication equipment is located and the zone where the first communication equipment is located in longitude or latitude meets a second threshold; the distance between the second communication device and the first communication device meets a third threshold;

the terminal capability information of the second communication equipment meets the target capability requirement; wherein the target capability includes at least one of: the terminal saves power; the capability of terminal cooperative transmission; the ability to partially detect partial sending; the ability to randomly select transmission resources;

The service transmission information of the second communication device satisfies at least one of the following: the retransmission mode of the service transmission configuration of the second communication equipment is a first retransmission mode; the first retransmission method includes: blind retransmission or retransmission based on automatic hybrid retransmission request (HARQ) feedback; the service transmission type of the second communication equipment is a target transmission mode; the target transmission mode comprises at least one of the following: unicast; multicasting; and (5) broadcasting.

Optionally, the first collision resource information includes at least one of:

the number of collision resources in the second transmission resources;

the position information of collision resources in the second transmission resources;

age information of collision resources in the second transmission resources;

collision resources in the second transmission resources correspond to TB or retransmission times of the service;

the number of second transmission resources;

the number of resources other than collision resources in the second transmission resources;

and collision types corresponding to the collision resources in the second transmission resources.

Optionally, in the case that the first detection information includes the first collision resource information, the first detection information satisfies a first condition, including at least one of:

The number of collision resources in the second transmission resources satisfies at least one of: the number of collision resources in the second transmission resources meets a fourth threshold; the ratio of the number of collision resources in the second transmission resources to the second transmission resources meets a fifth threshold; the ratio of the number of collision resources in at least one period in the second transmission resources to the second transmission resources in at least one period meets a sixth threshold;

the location information of the collision resource in the second transmission resource satisfies at least one of the following: the position information of collision resources in the second transmission resources is a target position; the distance between the collision resource in the second transmission resource and the current moment meets a seventh threshold; the distance between collision resources in the second transmission resources and the current moment meets the seventh threshold, and the number of collision resources in the second transmission resources meets the eighth threshold; the ratio of the number of collision resources, which are in the second transmission resources and have the distance from the collision resources to the current moment and meet a seventh threshold, to the second transmission resources meets a ninth threshold;

the aging information of collision resources in the second transmission resources is a target characteristic; the target characteristics include periodic collisions or aperiodic collisions;

The retransmission times of the TB or the service associated with the collision resource in the second transmission resource meet a tenth threshold;

the number of second transmission resources meets an eleventh threshold;

the number of resources except collision resources in the second transmission resources meets a twelfth threshold;

and the collision type corresponding to the collision resource in the second transmission resource comprises a target collision type.

Optionally, the target collision type includes at least one of:

Optionally, the second information of the first communication device includes at least one of:

a resource reselection decision;

service priority of the first communication device;

feedback information receiving and determining;

transmission resources of the first communication device;

a retransmission mode of the first communication device;

the first communication device sends an accumulated number of resource reselection indications to the second communication device over a first period of time.

Optionally, in a case where the first detection information includes second information of the first communication device and the second transmission resource collides with the first transmission resource, the first detection information satisfies a first condition, including at least one of:

the resource reselection decision is a target reselection decision; the target reselection decision is used for indicating whether the first communication device decides to perform resource reselection;

The size relation between the service priority of the second communication device and the service priority of the first communication device meets a target relation, or the difference value or the absolute value of the difference value between the service priority of the first communication device and the service priority of the second communication device meets a thirteenth threshold;

the feedback information receiving decision is a target feedback decision; the target feedback decision is used for indicating whether the first communication device decides to receive HARQ feedback information on feedback channel resources associated with SL transmission resources selected or reserved by the first communication device;

the number of resources, except the resources colliding with the second communication device, in the transmission resources of the first communication device meets a fourteenth threshold;

the retransmission mode of the first communication equipment is a second retransmission mode; wherein, the second retransmission method includes: blind retransmission or retransmission based on HARQ feedback;

the accumulated number of times the first communication device sends the resource reselection indication to the second communication device in the first time period meets a fifteenth threshold.

Optionally, in a case where the second detection information includes second information of the first communication device and the second transmission resource collides with the first transmission resource, the second detection information satisfies a second condition, including at least one of:

The resource reselection decision is: the first communication equipment performs resource reselection;

the service priority of the first communication device is smaller than the service priority of the second communication device; or, the difference or the absolute value of the difference between the service priority of the first communication device and the service priority of the second communication device is smaller than or equal to a thirteenth threshold; or, the service priority of the first communication device is less than the service priority of the second communication device and the difference or the absolute value of the difference between the service priority of the first communication device and the service priority of the second communication device is less than or equal to a thirteenth threshold;

the feedback information reception decision is: the first communication device does not receive feedback information on feedback channel resources associated with SL transmission resources selected or reserved by the first communication device;

the transmission resource of the first communication device has no available resource quantity except the resource colliding with the second communication device;

the transmission resources of the first communication device have no resources available for transmission after the resources colliding with the second communication device;

the number of resources available for transmission after the resources colliding with the second communication device in the transmission resources of the first communication device is less than or equal to a fourteenth threshold;

The retransmission mode of the first communication equipment is blind retransmission;

PSFCH resources are not configured in a resource pool where the first communication equipment is located;

the cumulative number of times the first communication device sends a resource reselection indication to the second communication device in the first time period exceeds a fifteenth threshold.

Optionally, the first channel information includes: channel busy ratio CBR;

in the case where the first detection information includes the first channel information, the first detection information satisfies a first condition including:

the CBR meets the sixteenth threshold.

Optionally, the third information of the third communication device includes: and the service priority of the third communication equipment.

Optionally, in a case where the first detection information includes third information of the third communication device and the second transmission resource and the third transmission resource collide, the first detection information satisfies a first condition, including:

the relation between the service priority of the second communication device and the service priority of the third communication device satisfies a seventeenth threshold.

Optionally, in a case where the second detection information includes third information of the third communication device and the second transmission resource collides with the third transmission resource, the second detection information satisfies a second condition, including:

The service priority of the third communication device is smaller than or equal to the service priority of the second communication device; or, a difference value or a difference value of absolute values between the service priority of the third communication device and the service priority of the second communication device is less than or equal to a seventeenth threshold value.

Optionally, the first detection information or the second detection information is included in the first resource reselection indication or the second resource reselection indication.

The resource reselection device in the embodiment of the present application may be a communication device, for example, a communication device with an operating system, or may be a component in a communication device, for example, an integrated circuit or a chip. The communication device may be a terminal or may be other devices than a terminal. By way of example, the communication devices may include, but are not limited to, the types of first communication device 11 or second communication device 12 listed above, and the other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not specifically limited.

The resource reselection device provided in the embodiment of the present application can implement each process implemented by the embodiment of the method shown in fig. 2, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.

Fig. 8 is a second schematic structural diagram of a resource reselection device provided in the embodiment of the present application, which is applied to a second communication apparatus, as shown in fig. 8, where the resource reselection device 800 includes:

a first reselection module 801, configured to perform resource reselection when the second communication device receives a second resource reselection instruction sent by the first communication device; the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection; or alternatively, the process may be performed,

a second determining module 802, configured to determine third detection information or fourth detection information when the second communication device receives a first resource reselection instruction or a second resource reselection instruction sent by the first communication device, and perform resource reselection when the third detection information meets a third condition, or not perform resource reselection when the fourth detection information meets a fourth condition; the first resource reselection indication is used for indicating to trigger the second communication equipment to reselect resources.

In the resource reselection device provided by the embodiment of the application, resource reselection is performed under the condition that the second communication equipment receives the second resource reselection instruction sent by the first communication equipment; or under the condition that the second communication device receives the first resource reselection instruction or the second resource reselection instruction sent by the first communication device, determining third detection information or fourth detection information, and performing resource reselection under the condition that the third detection information meets a third condition, or not performing resource reselection under the condition that the fourth detection information meets a fourth condition, so that the frequency of performing resource reselection based on the first resource reselection instruction or the second resource reselection instruction and the third detection information or the fourth detection information is limited, the frequency of performing resource reselection by the second communication device can be reduced, and the system overhead is reduced.

Optionally, the third detection information or the fourth detection information includes at least one of the following:

fourth information of the second communication device;

second collision resource information;

fifth information of the first communication device;

second channel information;

sixth information of the third communication device.

Optionally, the fourth information of the second communication device includes at least one of the following:

terminal capability information of the second communication device;

the service transmission information of the second communication equipment;

the number of resources within a resource selection window of the second communication device;

the number of resources within the selectable set of resources of the second communication device;

and the second communication device receives the accumulated times of the resource reselection instructions sent by the first communication device in the first time period.

Optionally, in the case that the third detection information includes fourth information of the second communication device, the third detection information satisfies a third condition, including at least one of:

the service transmission information of the second communication device satisfies at least one of the following: the retransmission mode of the service transmission configuration of the second communication equipment is a first retransmission mode; the first retransmission method includes: blind retransmission or retransmission based on automatic hybrid retransmission request (HARQ) feedback; the service transmission type of the second communication equipment is a target transmission type; the target transmission mode comprises at least one of the following: unicast; multicasting; broadcasting;

the number of resources within the resource selection window of the second communication device satisfies at least one of: the number of resources in the resource selection window meets an eighteenth threshold; the ratio of the number of the resources in the resource selection window to the total number of the resources in the X slots meets a nineteenth threshold, and X is an integer; the number of resources for UL transmissions within the resource selection window meets a twentieth threshold; the ratio of the number of resources for UL transmission in the resource selection window to the number of resources in the resource selection window satisfies a twenty-first threshold; the number of resources meeting the HARQ round trip time RTT in the resource selection window meets a second twelve threshold; the proportion of the number of the resources meeting the HARQ RTT in the resource selection window to the number of the resources in the resource selection window meets a twenty-third threshold;

The number of resources within the selectable set of resources of the second communication device satisfies at least one of: the number of resources in the set of selectable resources meets a twenty-fourth threshold; the ratio of the number of resources in the selectable resource set to the number of resources in the resource selection window meets a twenty-fifth threshold; the number of resources meeting the HARQ RTT in the resources in the selectable resource set meets a twenty-sixth threshold; the ratio of the number of the resources meeting the HARQ RTT in the resources in the selectable resource set to the number of the resources in the selectable resource set meets a twenty-seventh threshold;

the accumulated number of resource reselection instructions sent by the first communication device and received by the second communication device in the first time period meets a fifteenth threshold.

Optionally, the second collision resource information includes at least one of:

the number of collision resources in the second transmission resources;

age information of collision resources in the second transmission resources;

the number of second transmission resources;

The number of resources used for the same TB transmission except collision resources in the second transmission resources;

collision types corresponding to collision resources in the second transmission resources;

and the collision type number corresponding to the collision resource in the second transmission resource.

Optionally, in the case that the third detection information includes the second collision resource information, the third detection information satisfies a third condition, including at least one of:

the number of second transmission resources meets an eleventh threshold;

the number of resources used for the same TB transmission except collision resources in the second transmission resources meets a twenty-eighth threshold;

the collision type corresponding to the collision resource in the second transmission resource comprises a target collision type;

and the number of collision types corresponding to the collision resources in the second transmission resources meets a twenty-ninth threshold.

Optionally, the target collision type includes at least one of:

The feedback channel resource corresponding to the SL transmission resource selected or reserved by the second communication device collides with part or all of the SL transmission resource selected or reserved by the third communication device;

and the feedback channel resource corresponding to the SL transmission resource selected or reserved by the second communication equipment and the UL transmission resource of the third communication equipment are partially or completely overlapped to generate collision.

Optionally, the fifth information of the first communication device includes at least one of:

a resource reselection decision;

service priority of the first communication device;

feedback information receiving and determining;

transmission resources of the first communication device;

and the retransmission mode of the first communication equipment.

Optionally, in a case where the third detection information includes fifth information of the first communication device and the second transmission resource collides with the first transmission resource, the third detection information satisfies a third condition, including at least one of:

the feedback information receiving decision is a target feedback decision; the target feedback decision is used for indicating whether the first communication device decides to receive automatic hybrid retransmission, HARQ, feedback information on feedback channel resources associated with SL transmission resources selected or reserved by the first communication device;

the retransmission mode of the first communication equipment is a second retransmission mode; wherein, the second retransmission method includes: blind retransmissions or retransmissions based on HARQ feedback.

Optionally, in a case where the fourth detection information includes fifth information of the first communication device and the second transmission resource collides with the first transmission resource, the fourth detection information satisfies a fourth condition, including at least one of:

the service priority of the first communication device is smaller than the service priority of the second communication device, or the difference value or the absolute value of the difference value between the service priority of the second communication device and the service priority of the first communication device is smaller than or equal to a thirteenth threshold; or, the service priority of the first communication device is less than the service priority of the second communication device and the difference or the absolute value of the difference between the service priority of the second communication device and the service priority of the first communication device is less than or equal to a thirteenth threshold;

PSFCH resources are not configured in a resource pool where the first communication device is located.

Optionally, the second channel information includes: channel busy ratio CBR;

in the case where the third detection information includes the second channel information, the third detection information satisfies a third condition including:

the CBR meets the sixteenth threshold.

Optionally, the sixth information of the third communication device includes: and the service priority of the third communication equipment.

Optionally, in a case where the third detection information includes sixth information of the third communication device and the second transmission resource collides with the third transmission resource, the third detection information satisfies a third condition, including:

Optionally, in a case where the fourth detection information includes sixth information of the third communication device and the second transmission resource collides with the third transmission resource, the fourth detection information satisfies a fourth condition, including:

Optionally, the first resource reselection indication or the second resource reselection indication includes first detection information or second detection information; wherein the first detection information or the second detection information includes at least one of: first information of the second communication device; first collision resource information; second information of the first communication device; first channel information; third information of the third communication device;

the second communication device determines third detection information or fourth detection information, including:

the second communication device obtains the first detection information or the second detection information based on the first resource reselection indication or the second resource reselection indication;

the second communication device determines the third detection information or the fourth detection information based on the first detection information or the second detection information.

Optionally, in a case where the fourth detection information includes fourth information of the second communication device, the fourth detection information satisfies a fourth condition, including:

the number of resources within the resource selection window of the second communication device satisfies at least one of:

the number of resources within the resource selection window is below an eighteenth threshold;

the ratio of the number of resources in the resource selection window to the target number is lower than a nineteenth threshold;

the number of resources for UL transmissions within the resource selection window is above a twentieth threshold;

the ratio of the number of resources for UL transmission in the resource selection window to the number of resources in the resource selection window is higher than a twenty-first threshold;

the number of resources meeting the HARQ round trip time RTT in the resource selection window is lower than a twenty-second threshold;

and the proportion of the number of the resources meeting the HARQ RTT in the resource selection window to the number of the resources in the resource selection window is lower than a twenty-third threshold.

Optionally, in a case where the fourth detection information includes the second collision resource information, the fourth detection information satisfies a fourth condition, including:

the number of resources within the selectable set of resources of the second communication device satisfies at least one of:

The number of resources in the selectable resource set except collision resources is lower than a twenty-fourth threshold;

the ratio of the number of resources except collision resources in the selectable resource set to the number of resources in the resource selection window is lower than a twenty-fifth threshold;

the number of resources lower than the HARQ RTT in the resources except collision resources in the selectable resource set meets a twenty-sixth threshold;

and the proportion of the number of the resources meeting the HARQ RTT in the resources except collision resources in the selectable resource set to the number of the resources in the selectable resource set is lower than a twenty-seventh threshold.

Fig. 9 is one of schematic structural diagrams of a communication device provided in an embodiment of the present application; as shown in fig. 9, the communication device 900 includes a processor 901 and a memory 902, where the memory 902 stores a program or an instruction that can be executed on the processor 901, for example, when the communication device 900 is a first communication device, the program or the instruction implements the steps of the resource reselection method embodiment on the first communication device side when executed by the processor 901, and the same technical effects can be achieved. When the communication device 900 is a second communication device, the program or the instruction, when executed by the processor 901, implements the steps of the embodiment of the resource reselection method on the second communication device side, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides first communication equipment, which comprises a processor and a communication interface, wherein:

The first communication device embodiment corresponds to the first communication device side method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the first communication device embodiment, and the same technical effects can be achieved.

The embodiment of the application also provides second communication equipment, which comprises a processor and a communication interface, wherein the processor is used for:

under the condition that the second communication equipment receives a second resource reselection instruction sent by the first communication equipment, carrying out resource reselection; the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection; or alternatively, the process may be performed,

The second communication device embodiment corresponds to the second communication device side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the second communication device embodiment, and the same technical effects can be achieved.

Fig. 10 is a second schematic structural diagram of a communication device according to an embodiment of the present application; the communication device 1000 may be a first communication device or a second communication device. As shown in fig. 10, the communication device 1000 includes, but is not limited to: at least some of the components of the radio frequency unit 1001, the network module 1002, the audio output unit 1003, the input unit 1004, the sensor 1005, the display unit 1006, the user input unit 1007, the interface unit 1008, the memory 1009, and the processor 1010, etc.

Those skilled in the art will appreciate that the communication device 1000 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 1010 by a power management system to perform functions such as managing charge, discharge, and power consumption by the power management system. The configuration of the communication device shown in fig. 10 does not constitute a limitation of the communication device, and the communication device may include more or less components than illustrated, or may combine certain components, or may be arranged in different components, which are not described in detail herein.

It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processing unit (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 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 at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 can include two portions, a touch detection device and a touch controller. Other input devices 10072 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 this embodiment, after receiving SL data from other communication devices or downlink data from a network device, the radio frequency unit 1001 may transmit the SL data or the downlink data to the processor 1010 for processing; in addition, the radio frequency unit 1001 may send SL data to other communication devices or send uplink data to network side devices. In general, the radio frequency unit 1001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1009 may be used to store software programs or instructions and various data. The memory 1009 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 1009 may include volatile memory or nonvolatile memory, or the memory 1009 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 1009 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, 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 1010.

The radio frequency unit 1001 is configured to send a first resource reselection indication to a second communication device when the first communication device detects that a second transmission resource of the second communication device collides with a first transmission resource of the first communication device and/or a third transmission resource of a third communication device, where the first resource reselection indication is used to instruct triggering the second communication device to perform resource reselection; or alternatively, the process may be performed,

a processor 1010 for determining the first detection information or the second detection information;

the radio frequency unit 1001 is further configured to send a second resource reselection indication to the second communication device if the first detection information meets a first condition, or not send a second resource reselection indication if the second detection information meets a second condition; and the second resource reselection indication is used for indicating to trigger the second communication equipment to perform resource reselection.

In the first communication device provided in the embodiment of the present application, when the first communication device detects that a second transmission resource of the second communication device collides with a first transmission resource of the first communication device and/or a third transmission resource of the third communication device, the first communication device sends a first resource reselection instruction to the second communication device, and the first resource reselection instruction triggers the second communication device to reselect resources; or the first communication device sends a second resource reselection instruction to the second communication device under the condition that the first detection information meets the first condition, and instructs to trigger the second communication device to perform resource reselection, or the first communication device does not send the second resource reselection instruction under the condition that the second detection information meets the second condition, so that the number of times of sending the second resource reselection instruction is limited based on the first detection information and the first condition, or the number of times of sending the second resource reselection instruction is limited based on the second detection information and the second condition, the frequency of sending the resource reselection instruction by the first communication device can be reduced, the frequency of resource reselection by the second communication device is reduced, and the system overhead is reduced.

The embodiment of the application also provides a resource reselection system, which comprises: a first communication device operable to perform the steps of the resource reselection method as shown in fig. 2, and a second communication device operable to perform the steps of the resource reselection method as shown in fig. 3.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the embodiments of the resource reselection method are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no redundant description is provided herein.

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, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run a program or an instruction, implement each process of the above embodiment of the resource reselection method, and achieve 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, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the above-mentioned embodiments of the resource reselection method, and the same technical effects are achieved, so that repetition is avoided, and details are not repeated 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 also 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 solutions 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 (such as ROM/RAM, magnetic disk, optical disk), comprising several 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 described in 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 of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A method of resource reselection, comprising:

2. The resource reselection method of claim 1, wherein the step of selecting the resource comprises,

the first transmission resource includes: the SL transmission resource selected or reserved by the first communication device, the feedback channel resource corresponding to the sub-link SL transmission resource selected or reserved by the first communication device, or the uplink UL transmission resource of the first communication device;

3. The resource reselection method of claim 1, wherein the first detection information or the second detection information comprises at least one of:

first information of the second communication device;

first collision resource information;

second information of the first communication device;

first channel information;

third information of the third communication device.

4. A method of resource reselection according to claim 3, wherein the first information of the second communication device comprises at least one of:

location information of the second communication device;

terminal capability information of the second communication device;

5. The resource reselection method of claim 4, wherein, in the case where the first detection information includes first information of the second communication device, the first detection information satisfies a first condition, comprising at least one of:

6. A resource reselection method according to claim 3 wherein the first collision resource information comprises at least one of:

the number of collision resources in the second transmission resources;

age information of collision resources in the second transmission resources;

The number of second transmission resources;

7. The resource reselection method of claim 6, wherein, in the case that the first detection information includes the first collision resource information, the first detection information satisfies a first condition, comprising at least one of:

the number of second transmission resources meets an eleventh threshold;

8. The resource reselection method of claim 7, wherein the target collision type comprises at least one of:

9. A method of resource reselection according to claim 3, characterized in that the second information of the first communication device comprises at least one of:

a resource reselection decision;

service priority of the first communication device;

feedback information receiving and determining;

transmission resources of the first communication device;

a retransmission mode of the first communication device;

10. The resource reselection method of claim 9, wherein, in a case where the first detection information includes second information of the first communication device and the second transmission resource collides with the first transmission resource, the first detection information satisfies a first condition, comprising at least one of:

11. The resource reselection method of claim 9, wherein in a case where the second detection information includes second information of the first communication device and the second transmission resource collides with the first transmission resource, the second detection information satisfies a second condition, comprising at least one of:

12. The resource reselection method of claim 3, wherein the first channel information comprises: channel busy ratio CBR;

the CBR meets the sixteenth threshold.

13. A resource reselection method according to claim 3, wherein the third information of the third communication device comprises: and the service priority of the third communication equipment.

14. The resource reselection method of claim 13, wherein in a case where the first detection information includes third information of the third communication device and the second transmission resource and the third transmission resource collide, the first detection information satisfies a first condition, comprising:

15. The resource reselection method of claim 13, wherein in a case where the second detection information includes third information of the third communication device and the second transmission resource and the third transmission resource collide, the second detection information satisfies a second condition, comprising:

16. The resource reselection method of claim 1, wherein the first detection information or the second detection information is included in the first resource reselection indication or the second resource reselection indication.

17. A method of resource reselection, comprising:

18. The resource reselection method of claim 17, wherein the third detection information or the fourth detection information comprises at least one of:

fourth information of the second communication device;

second collision resource information;

fifth information of the first communication device;

Second channel information;

sixth information of the third communication device.

19. The resource reselection method of claim 18, wherein the fourth information of the second communication device includes at least one of:

terminal capability information of the second communication device;

the service transmission information of the second communication equipment;

20. The resource reselection method of claim 19, wherein, in the case where the third detection information includes fourth information of the second communication device, the third detection information satisfies a third condition, comprising at least one of:

21. The resource reselection method of claim 18, wherein the second collision resource information comprises at least one of:

the number of collision resources in the second transmission resources;

age information of collision resources in the second transmission resources;

The number of second transmission resources;

22. The resource reselection method of claim 21, wherein, in the case where the third detection information includes the second collision resource information, the third detection information satisfies a third condition, comprising at least one of:

the number of second transmission resources meets an eleventh threshold;

23. The resource reselection method of claim 22, wherein the target collision type comprises at least one of:

24. The resource reselection method of claim 18, wherein the fifth information of the first communication device comprises at least one of:

a resource reselection decision;

service priority of the first communication device;

feedback information receiving and determining;

transmission resources of the first communication device;

and the retransmission mode of the first communication equipment.

25. The resource reselection method of claim 24, wherein, in the case where the third detection information includes fifth information of the first communication device and the second transmission resource collides with the first transmission resource, the third detection information satisfies a third condition, including at least one of:

26. The resource reselection method of claim 24, wherein, in the case where the fourth detection information includes fifth information of the first communication device and the second transmission resource collides with the first transmission resource, the fourth detection information satisfies a fourth condition, comprising at least one of:

27. The resource reselection method of claim 18, wherein the second channel information comprises: channel busy ratio CBR;

the CBR meets the sixteenth threshold.

28. The resource reselection method of claim 18, wherein the sixth information of the third communication device comprises: and the service priority of the third communication equipment.

29. The resource reselection method of claim 28, wherein in a case where the third detection information includes sixth information of the third communication device and the second transmission resource collides with the third transmission resource, the third detection information satisfies a third condition, comprising:

30. The resource reselection method of claim 28, wherein in the case where the fourth detection information includes sixth information of the third communication device and the second transmission resource collides with the third transmission resource, the fourth detection information satisfies a fourth condition, comprising:

31. The resource reselection method of claim 17, wherein the first resource reselection indication or the second resource reselection indication includes first detection information or second detection information; wherein the first detection information or the second detection information includes at least one of: first information of the second communication device; first collision resource information; second information of the first communication device; first channel information; third information of the third communication device;

32. The resource reselection method of claim 19, wherein in the case where the fourth detection information includes fourth information of the second communication device, the fourth detection information satisfies a fourth condition, comprising:

33. The resource reselection method of claim 19, wherein, in the case where the fourth detection information includes the second collision resource information, the fourth detection information satisfies a fourth condition, comprising:

34. A resource reselection apparatus for use with a first communication device, comprising:

35. A resource reselection apparatus for use with a second communication device, comprising:

36. A first communication device 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 reselection method of any of claims 1 to 16.

37. A second communication device 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 reselection method of any of claims 17 to 33.

38. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the resource reselection method of any one of claims 1-16, or the steps of the resource reselection method of any one of claims 17 to 33.