Direct communication method, direct communication device and storage medium

Abstract

The invention relates to a direct communication method, a direct communication device and a storage medium. The direct connection communication method is applied to a first device, and comprises the following steps: determining a first condition which represents that resources selected between different devices collide; and sending first indication information, wherein the first indication information is used for indicating to remove the resource collision. The direct connection communication method is applied to a second device, and comprises: receiving first indication information, the first indication information being triggered by a first user equipment when determining that a first condition is satisfied, and being used for indicating to cancel resource collision; and carrying out resource selection based on the first indication information. According to the invention, resource coordination can be carried out when resource collision occurs selected by different devices, and collision is avoided.

Description

[0001] The present disclosure is a divisional application. The application number of the original application is 202080002166.0, the application date is August 26, 2020, and the name of the invention of the original application is “Direct communication method, direct communication device and storage medium”. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to a direct communication method, a direct communication device, and a storage medium. Background Art

[0003] The continuous emergence of a new generation of new Internet applications has put forward higher requirements for wireless communication technology, driving the continuous evolution of wireless communication technology to meet the needs of applications.

[0004] With the development of the new generation of 5G mobile communication technology, 3GPP Rel-16 uses 5G New Radio (NR) technology to support direct communication services and scenarios. For example, it supports new vehicle to everything (V2X) communication services and scenarios.

[0005] In the related art, for a directly connected user device A, a resource set can be sent to a user device B in Mode 2, and the user device B takes it into consideration when selecting resources for its own data transmission. Resource coordination is required between user devices, but there is no coordination solution in the related art. Summary of the invention

[0006] In order to overcome the problems existing in the related art, the present disclosure provides a direct communication method, a direct communication device and a storage medium.

[0007] According to a first aspect of an embodiment of the present disclosure, a direct connection communication method is provided, which is applied to a first device and includes:

[0008] A first condition is determined, where the first condition indicates that resources selected by different devices collide with each other; and first indication information is sent, where the first indication information is used to indicate that the resource collision is resolved.

[0009] In one implementation, the first condition includes that the first device monitors that reserved resources of at least two devices other than the first device overlap.

[0010] In one implementation, the first condition includes that a measured value of reference signal received power of one or more devices whose reserved resources overlap is greater than a specified threshold.

[0011] In one implementation, the direct communication method further includes: receiving downlink control information sent by a network device, where the specified threshold is obtained according to the indication of the downlink control information; or obtaining the specified threshold according to preconfigured information.

[0012] In one implementation, the first indication information includes one or more of the following:

[0013] An indication for resolving resource collision; an indication of time resource and / or frequency resource where resource collision occurs; an indication of user equipment identifier where resource collision occurs.

[0014] In one implementation, sending the first indication information includes: sending the first indication information based on direct connection control information.

[0015] In one implementation, the direct connection control information includes a first indication field, and the first indication field is used to indicate the first indication information.

[0016] In one implementation, the direct connection control information includes a first direct connection control information format, and the first direct connection control information format is used to indicate the first indication information.

[0017] In one implementation, the user equipment identifier includes the user equipment identifier included in the monitored direct connection control information, and the resources reserved by the direct connection control information include at least part of the resources where resource collision occurs.

[0018] In one implementation, the identifier of the user equipment includes the source user equipment identifier, or the source user equipment identifier and the destination user equipment identifier.

[0019] In one implementation, the user equipment identifier includes the identifier of the user equipment that performs direct communication with the first device, and the resources reserved by the user equipment include at least part of the resources where resource collision occurs.

[0020] In one implementation, the direct communication method further includes:

[0021] Receiving downlink control information sent by a network device, where the downlink control information includes an indication for determining whether to execute the determination of the first condition and sending the first indication information, and determining to execute the determination of the first condition and sending the first indication information according to the downlink control information; or determining preconfigured information including an indication for indicating whether to execute the determination of the first condition and sending the first indication information, and determining to execute the determination of the first condition and sending the first indication information according to the preconfigured information.

[0022] In one implementation, the first condition includes:

[0023] The first device is a target user equipment that uses the reserved resources to receive data, or one of the target user equipments that uses the reserved resources to receive data.

[0024] In one implementation, the first condition includes:

[0025] The reserved resources that have a resource collision have a resource reservation period, and / or the resource reservation periods of the reserved resources that have a resource collision have a specific relationship.

[0026] In one implementation, there is an integer multiple relationship between the resource reservation periods.

[0027] In one implementation, the specific relationship is determined based on an indication of downlink control information; or

[0028] The specific relationship is determined according to preconfiguration information.

[0029] According to a second aspect of an embodiment of the present disclosure, a direct communication method is provided, which is applied to a second device, including:

[0030] Receive first indication information, where the first indication information is triggered by the first user equipment when it is determined that a first condition is met and is used to indicate the resolution of resource collision; and perform resource selection based on the first indication information.

[0031] In one implementation, the receiving the first indication information includes: receiving the first indication information based on direct connection control information.

[0032] In one implementation, the direct connection control information includes a first indication field, and the first indication field is used to indicate the first indication information.

[0033] In one implementation, the direct connection control information includes a first direct connection control information format, and the first direct connection control information format is used to indicate the first indication information.

[0034] In one implementation, selecting a resource based on the first indication information includes:

[0035] If the reserved time and frequency resources overlap with the time resources and / or frequency resources in the first indication information where resource collision occurs; and / or if the user equipment identifier indicated in the first indication information is the same as the user equipment identifier used by the second user equipment for direct communication, the second user equipment reselects the time and frequency resources;

[0036] In one implementation, selecting a resource based on the first indication information includes:

[0037] If the time-frequency resources reserved by itself coincide with the time resources and / or frequency resources in the first indication information where resource collisions occur, and if the user equipment identifier used by the second user equipment for direct communication does not include the user equipment identifier indicated in the first indication information, then the second user equipment performs time-frequency resource reselection.

[0038] In one implementation, the first indication information includes one or more of the following:

[0039] An indication for resolving resource collisions; an indication of the time resources and / or frequency resources where resource collisions occur; an indication of the user equipment identifier where resource collisions occur.

[0040] In one implementation, the first condition includes that the first device monitors that the reserved resources of at least two other devices different from the first device coincide.

[0041] In one implementation, the first condition includes that the measured values of the reference signal receiving power of one or more devices where the reserved resources coincide are greater than a specified threshold.

[0042] In one implementation, the specified threshold is obtained according to the indication of downlink control information; or, the specified threshold is obtained according to preconfigured information.

[0043] In one implementation, the first condition includes:

[0044] The first device is the target user equipment that uses the reserved resources for data reception, or one of the target user equipments that uses the reserved resources for data reception.

[0045] In one implementation, the first condition includes:

[0046] The reserved resources where resource collisions occur have a resource reservation period, and / or there is a specific relationship between the resource reservation periods of the reserved resources where resource collisions occur.

[0047] In one implementation, there is an integer multiple relationship between the resource reservation periods.

[0048] In one implementation, the specific relationship is determined according to the indication of downlink control information; or

[0049] The specific relationship is determined according to preconfigured information.

[0050] According to the third aspect of the embodiments of the present disclosure, there is provided a direct communication device applied to a first device, including:

[0051] A determination unit, configured to determine a first condition, where the first condition characterizes a collision of resources selected between different devices; a sending unit, configured to send first indication information, where the first indication information is used to indicate the release of the resource collision.

[0052] In one implementation, the first condition includes that the first device monitors that the reserved resources of at least two other devices different from the first device overlap.

[0053] In one implementation, the first condition includes that the measured values of the reference signal received power of one or more devices with overlapping reserved resources are greater than a specified threshold.

[0054] In one implementation, the determination unit is further configured to:

[0055] Receive downlink control information sent by a network device, where the specified threshold is obtained according to the indication of the downlink control information; or, obtain the specified threshold according to pre-configured information.

[0056] In one implementation, the first indication information includes one or more of the following:

[0057] An indication for releasing the resource collision; an indication of the time resource and / or frequency resource where the resource collision occurs; an indication of the user equipment identifier where the resource collision occurs.

[0058] In one implementation, the sending of the first indication information includes: sending the first indication information based on direct connection control information.

[0059] In one implementation, the direct connection control information includes a first indication field, where the first indication field is used to indicate the first indication information.

[0060] In one implementation, the direct connection control information includes a first direct connection control information format, where the first direct connection control information format is used to indicate the first indication information.

[0061] In one implementation, the user equipment identifier includes the user equipment identifier included in the monitored direct connection control information, and the resources reserved by the direct connection control information include at least part of the resources where the resource collision occurs.

[0062] In one implementation, the identifier of the user equipment includes a source user equipment identifier, or a source user equipment identifier and a destination user equipment identifier.

[0063] In one implementation, the user equipment identifier includes the identifier of the user equipment that performs direct connection communication with the first device, and the resources reserved by the user equipment include at least part of the resources where the resource collision occurs.

[0064] In one embodiment, the direct communication device also includes a receiving unit, which is configured to: receive downlink control information sent by a network device, wherein the downlink control information includes an indication for determining whether to execute the determination of the first condition and send the first indication information; the determination unit is also configured to: determine to execute the determination of the first condition and send the first indication information according to the downlink control information; or determine pre-configuration information including an indication of whether to execute the determination of the first condition and send the first indication information, and determine to execute the determination of the first condition and send the first indication information according to the pre-configuration information.

[0065] In one implementation, the first condition includes:

[0066] The first device is a target user equipment that uses the reserved resources to receive data, or one of the target user equipments that uses the reserved resources to receive data.

[0067] In one implementation, the first condition includes:

[0068] The reserved resources that have a resource collision have a resource reservation period, and / or the resource reservation periods of the reserved resources that have a resource collision have a specific relationship.

[0069] In one implementation, there is an integer multiple relationship between the resource reservation periods.

[0070] In one implementation, the specific relationship is determined based on an indication of downlink control information; or

[0071] The specific relationship is determined according to preconfiguration information.

[0072] According to a fourth aspect of an embodiment of the present disclosure, a direct communication apparatus is provided, which is applied to a second device, including:

[0073] The receiving unit is configured to receive first indication information, where the first indication information is triggered by the first user equipment when it is determined that the first condition is met and is used to indicate the resolution of resource collision; the processing unit is configured to perform resource selection based on the first indication information.

[0074] In one implementation, the receiving unit receives the first indication information in the following manner: receiving the first indication information based on direct connection control information.

[0075] In one implementation, the direct connection control information includes a first indication field, and the first indication field is used to indicate the first indication information.

[0076] In one implementation, the direct connection control information includes a first direct connection control information format, and the first direct connection control information format is used to indicate the first indication information.

[0077] In one implementation, the processing unit selects resources based on the first indication information in the following manner:

[0078] If the time-frequency resources reserved by itself coincide with the time resources and / or frequency resources in which resource collision occurs in the first indication information; and / or if the user equipment identifier indicated in the first indication information is the same as the user equipment identifier used for direct communication between the second user equipment and another device, the second user equipment performs time-frequency resource reselection;

[0079] In one implementation, the processing unit selects resources based on the first indication information in the following manner:

[0080] If the time-frequency resources reserved by itself coincide with the time resources and / or frequency resources in which resource collision occurs in the first indication information, and if the user equipment identifier used for direct communication between the second user equipment and another device does not include the user equipment identifier indicated in the first indication information, the second user equipment performs time-frequency resource reselection.

[0081] In one implementation, the first indication information includes one or more of the following:

[0082] An indication for resolving resource collision; an indication of the time resources and / or frequency resources in which resource collision occurs; an indication of the user equipment identifier in which resource collision occurs.

[0083] In one implementation, the first condition includes that the first device monitors that the reserved resources of at least two other devices different from the first device coincide.

[0084] In one implementation, the first condition includes that the measured values of the reference signal receiving power of one or more devices in which the reserved resources coincide are greater than a specified threshold.

[0085] In one implementation, the specified threshold is obtained according to the indication of the downlink control information; or, the specified threshold is obtained according to the pre-configured information.

[0086] In one implementation, the first condition includes:

[0087] The first device is the target user equipment that uses the reserved resources for data reception, or one of the target user equipments that uses the reserved resources for data reception.

[0088] In one implementation, the first condition includes:

[0089] The reserved resources in which resource collision occurs have a resource reservation period, and / or there is a specific relationship between the resource reservation periods of the reserved resources in which resource collision occurs.

[0090] In one implementation, there is an integer multiple relationship between the resource reservation periods.

[0091] In one implementation, the specific relationship is determined based on the indication of downlink control information; or

[0092] the specific relationship is determined according to pre-configured information.

[0093] According to a fifth aspect of the embodiments of the present disclosure, there is provided a direct communication device, including:

[0094] a processor; a memory for storing processor-executable instructions;

[0095] wherein the processor is configured to: execute the direct communication method described in the first aspect or any one of the implementations of the first aspect.

[0096] According to a sixth aspect of the embodiments of the present disclosure, there is provided a direct communication device, including:

[0097] a processor; a memory for storing processor-executable instructions;

[0098] wherein the processor is configured to: execute the direct communication method described in the second aspect or any one of the implementations of the second aspect.

[0099] According to a seventh aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor of a first device, enabling the first device to execute the direct communication method described in the first aspect or any one of the implementations of the first aspect.

[0100] According to an eighth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor of a second device, enabling the second device to execute the direct communication method described in the second aspect or any one of the implementations of the second aspect.

[0101] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: When the first device determines that a first condition for resource collision in the selection between different devices is satisfied, the first device sends first indication information for indicating the release of resource collision, so as to perform resource coordination and release resource collision when resources selected by different devices collide in a Hidden Terminal scenario.

[0102] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. Description of the Drawings

[0103] The accompanying drawings here are incorporated into and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0104] Figure 1 It is a diagram of a direct communication system architecture shown according to an exemplary embodiment.

[0105] Figure 2 It is a flowchart of a direct communication method shown according to an exemplary embodiment.

[0106] Figure 3 It is a flowchart of a direct communication method shown according to an exemplary embodiment.

[0107] Figure 4 It is a block diagram of a direct communication device shown according to an exemplary embodiment.

[0108] Figure 5 It is a block diagram of a direct communication device shown according to an exemplary embodiment.

[0109] Figure 6 It is a block diagram of a device for direct communication shown according to an exemplary embodiment.

[0110] Figure 7 It is a block diagram of a device for direct communication shown according to an exemplary embodiment. Detailed implementation manners

[0111] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0112] The direct communication method provided by the embodiments of the present disclosure can be applied to Figure 1 the direct communication system shown. Referring to Figure 1 as shown, in the scenario where direct communication devices perform direct communication, the network device configures various transmission parameters for data transmission for direct communication device 1. Direct communication device 1, direct communication device 2, and direct communication device 3 perform direct communication. There are obstacles between direct communication device 2 and direct communication device 3. The link for communication between the network device and the direct communication device is the uplink and downlink, and the link between the direct communication devices is the sidelink.

[0113] In the present disclosure, the communication scenario in which direct communication occurs between direct communication devices may be a vehicle-to-everything (V2X) service scenario. Among them, V represents a vehicle-mounted device, and X represents any object that interacts with the vehicle-mounted device. Currently, X mainly includes vehicle-mounted devices, handheld devices, roadside traffic infrastructure, and networks. The information modes of V2X interaction include: interaction between vehicle-mounted devices (Vehicle to Vehicle, V2V), between vehicle-mounted devices and roadside devices (Vehicle to Infrastructure, V2I), between vehicle-mounted devices and handheld devices (Vehicle to Pedestrian, V2P), and between vehicle-mounted devices and networks (Vehicle to Network, V2N).

[0114] The Internet of Vehicles can effectively improve traffic safety, enhance traffic efficiency, and enrich people's travel experiences. Leveraging existing cellular communication technologies to support Internet of Vehicles communication can effectively utilize the existing base station deployments, reduce device overhead, and is also more conducive to providing services with QoS guarantees to meet the requirements of Internet of Vehicles services. Therefore, in Long Term Evolution (LTE) Rel-14 / 15, cellular network support for V2X communication in the Internet of Vehicles was provided, namely Cellular-Vehicle to Everything (C-V2X). In C-V2X, the communication between vehicle-mounted devices and other devices can be relayed through the base station and the core network, that is, using the uplink and downlink between the terminal device and the base station in the original cellular network for communication; or it can directly communicate through the direct link between the devices. Compared with Uu interface communication, sidelink communication has characteristics such as short latency and small overhead, and is very suitable for communication directly between vehicle-mounted devices and other surrounding devices in close geographical proximity.

[0115] With the development of the new generation of 5G mobile communication technology, in 3GPP Rel-16, the 5G NR technology was used to achieve support for new V2X communication services and scenarios, such as vehicle platooning, extended sensors, advanced driving, and remote driving, etc. Generally speaking, 5G V2X sidelink can provide higher communication rates, shorter communication delays, and more reliable communication quality.

[0116] The communication scenario of direct communication between directly connected communication devices can also be a device-to-device (D2D) communication scenario. The directly connected communication devices for direct communication in the embodiments of the present disclosure may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), terminals, terminal equipment, etc. For the convenience of description, the embodiments of the present disclosure are described below using the direct communication device as a user equipment as an example.

[0117] In R17 Sidelink Enhancement approved by 3GPP, the following optimization may be studied: one of the direct communication devices performing direct communication (e.g., direct communication device 2) can send a resource set to other user devices whose resource selection mode is Mode 2 (e.g., direct communication device 3), and the other user devices whose resource selection mode is Mode 2 (e.g., direct communication device 3) can take the resource set into consideration when selecting resources for their own data transmission.

[0118] However, the relationship between the direct-connection communication device 2 and the direct-connection communication device 3, the circumstances under which the direct-connection communication device 2 coordinates, and how the direct-connection communication device 3 utilizes the instructions of the direct-connection communication device 2 are still to be studied.

[0119] One possible use scenario for coordination between users is to solve the Hidden Terminal problem. That is, direct communication device 2 and direct communication device 3 cannot monitor each other's direct transmission, but direct communication device 1 can receive the direct transmission of direct communication device 2 and direct communication device 3. When direct communication device 2 and direct communication device 3 select the same time resources and / or frequency resources, the two cannot detect resource collisions between each other through monitoring. However, if one of the direct communication target user devices includes direct communication device 1, it will cause the reception failure of direct communication device 1. The problem of reception failure of direct communication device 1 can be solved by direct communication device 1 coordinating the resource selection of direct communication device 2 and direct communication device 3.

[0120] The embodiment of the present disclosure provides a direct communication method. When it is determined that the conditions for the collision of resources selected by different devices are met, indication information for indicating the resolution of resource collision is sent, so that in a hidden terminal scenario, when the resources selected by different devices collide, resource coordination is performed to resolve the resource collision.

[0121] For the convenience of description in the embodiments of the present disclosure, a first condition is used to characterize the condition where the resources selected between different devices collide, and a first indication information is used to indicate the release of the resource collision.

[0122] Figure 2 is a flowchart of a direct communication method shown according to an exemplary embodiment. As Figure 2 shown, the direct communication method is used in a first device, and the first device may be a device such as a terminal for performing direct communication, and includes the following steps.

[0123] In step S11, a first condition is determined, and the first condition characterizes that the resources selected between different devices collide.

[0124] In step S12, a first indication information is sent, and the first indication information is used to indicate the release of the resource collision.

[0125] In the embodiments of the present disclosure, when it is determined that the first condition characterizing the collision of resources selected between different devices is satisfied, the first device may be triggered to send the first indication information for indicating the release of the resource collision.

[0126] Among them, in the embodiments of the present disclosure, the collision of resources may be understood as resource overlap, or may also be understood as resource identity.

[0127] Furthermore, in the embodiments of the present disclosure, the collision of resources may be understood as all or part of the time resources, frequency resources, code domain resources or spatial domain resources colliding. For example, the coincidence of time resources, frequency resources, code domain resources or spatial domain resources may be understood as all or part of the resources coinciding.

[0128] In the embodiments of the present disclosure, the implementation process of determining the first condition will be described first.

[0129] In one implementation, the first condition in the embodiments of the present disclosure includes that the first device monitors that the reserved resources of at least two other devices different from the first device overlap.

[0130] Among them, the reserved resources can be determined through the Sidelink Control Information (SCI). For example, when the first user equipment monitors that the sidelink control information from different other user equipments reserves overlapping time-frequency resources, the first user equipment may be triggered to send an indication information for indicating the release of the resource collision.

[0131] It can be understood that the overlap of the reserved resources of at least two other devices in the embodiments of the present disclosure includes partial overlap and complete overlap. Among them, the reserved resources may be time resources, frequency resources, code domain resources or spatial domain resources.

[0132] In another embodiment, in the embodiments of the present disclosure, the first condition includes that the measured value of the reference signal received power (RSRP) of one or more devices with overlapping reserved resources is greater than a specified threshold.

[0133] In the embodiments of the present disclosure, the specified threshold may be determined by downlink control information or pre-configured.

[0134] On the one hand, the first device receives the downlink control information sent by a network device (such as a base station) and determines the specified threshold of the measured value of the reference signal received power for determining whether the first condition is satisfied through the received downlink control information. On the other hand, the first device may obtain the specified threshold of the measured value of the reference signal received power for determining whether the first condition is satisfied according to pre-configured information.

[0135] Furthermore, in the embodiments of the present disclosure, the specified threshold of the measured value of the reference signal received power for determining whether the first condition is satisfied may be related to the sidelink data transmission priority indicated by the sidelink control information, and there is a corresponding relationship between the specified threshold and the sidelink data transmission priority indicated by the sidelink control information. In one example, when the priority is i, the threshold is Threshold_i, and when the priority is j, the threshold is Threshold_j. Assume that the user equipment monitors two downlink control information with overlapping reserved time-frequency resources, such as downlink control information 1 and downlink control information 2, and the sidelink transmission priorities indicated by them are priority 1 and priority 2 respectively, and the corresponding thresholds are T1 and T2 respectively. Then the measured value of the sidelink reference signal received power (S-RSRP) corresponding to the downlink control information 1 needs to be greater than T1, and the measured value of the S-RSRP corresponding to the downlink control information 2 needs to be greater than T2.

[0136] Among them, the overlap of reserved resources can be determined by monitoring the downlink control information. For different devices that monitor the downlink control information with overlapping reserved resources, and the measured value of the reference signal received power corresponding to the downlink control information exceeds the specified threshold, it can be determined that the first condition is satisfied. In one example, for two sidelink control information that monitor overlapping reserved time-frequency resources, if the measured value of the corresponding S-RSRP exceeds the given S-RSRP threshold, it can be determined that the first condition for triggering the transmission of the first indication information is satisfied. Among them, the given S-RSRP threshold can be obtained through pre-configuration or base station downlink signaling configuration.

[0137] In another embodiment, the first condition includes that the first device is the target user equipment that uses the reserved resources for data reception, or one of the target user equipments that use the reserved resources for data reception. For example, among the at least one downlink control information with overlapping reserved resources, the target user equipment identifier indicated by at least one downlink control information includes the first device, that is, the first device is the target user equipment indicated by the downlink control information, or when broadcasting or multicasting, the first device is one of the target user equipments indicated by the downlink control information.

[0138] In another embodiment, the first condition includes that the reserved resources with resource collision have a resource reservation period, and the resource reservation periods indicated by at least two downlink control information with overlapping reserved resources are not zero. And / or there is a specific relationship between the resource reservation periods of the reserved resources with resource collision. Among them, the specific relationship is determined based on the indication of the downlink control information; or the specific relationship is determined according to the pre-configured information. In one example, there is an integer multiple relationship between the resource reservation periods. For example, the resource reservation period indicated by one downlink control information can divide the resource reservation period indicated by another downlink control information.

[0139] The embodiments of the present disclosure will hereinafter describe the transmission of the first indication information.

[0140] In one embodiment of the embodiments of the present disclosure, the first indication information can be sent through the downlink control information.

[0141] In the embodiments of the present disclosure, the first indication information may include one or more of the following: an indication for releasing resource collision; an indication of time resources and / or frequency resources with resource collision; an indication of the user equipment identifier with resource collision.

[0142] In one example, the release of resource collision is indicated in the downlink control information. And / or the time resources and / or frequency resources with resource collision are indicated in the downlink control information. And / or the user equipment identifier with resource collision is indicated in the downlink control information.

[0143] On the one hand, the downlink control information includes a first indication field, and the first indication field is used to indicate the first indication information. For example, in the embodiments of the present disclosure, the field that reuses the first part of the downlink control information for resource reservation can be used to indicate the first indication information. On the other hand, a new second part of the downlink control information format is designed to indicate the first indication information in the second part of the downlink control information format. That is, the direct connection control information includes a first direct connection control information format, and the first direct connection control information format is used to indicate the first indication information.

[0144] In an embodiment of the present disclosure, when indicating a user equipment identifier where a resource collision occurs in downlink control information, on the one hand, the user equipment identifier includes the user equipment identifier included in the sidelink control information that is monitored, and the resources reserved by the sidelink control information include at least part of the resources where the resource collision occurs. On the other hand, the identifier of the user equipment includes the source user equipment identifier, or the source user equipment identifier and the destination user equipment identifier. In one example, the source user equipment identifier, or the source user equipment identifier and the destination user equipment identifier used when performing resource reservation using the downlink control information where a resource reservation collision occurs, indicates the sending user equipment of the downlink control information for indicating the reservation configuration.

[0145] In an embodiment of the present disclosure, when indicating a user equipment identifier where a resource collision occurs in downlink control information, the user equipment identifier includes the identifier of the user equipment that performs sidelink communication with the first device, and the resources reserved by the user equipment include at least part of the resources where the resource collision occurs. In one example, among the downlink control information where a resource reservation collision occurs that triggers the resolution of the resource collision, the downlink control information where itself is the target user equipment is selected. A downlink control information including a first indication information is sent to the user equipment that sends the downlink control information, indicating the user equipment that sends the downlink control information as the target device of the receiving end.

[0146] When implementing the embodiment of the present disclosure, the above sidelink communication method can be selectively enabled or disabled, that is, determining the first condition and / or sending the first indication information is performed or not.

[0147] In one implementation, the first device can receive the downlink control information sent by the network device, and the downlink control information includes an indication for determining whether to perform determining the first condition and sending the first indication information. The downlink control information includes an indication for determining to perform determining the first condition and sending the first indication information, and the first device determines to perform determining the first condition and sending the first indication information according to the downlink control information. The downlink control information includes an indication for determining not to perform determining the first condition and sending the first indication information, and the first device determines not to perform determining the first condition and sending the first indication information according to the downlink control information.

[0148] In another implementation, the first device can determine pre-configuration information including an indication for indicating whether to perform determining the first condition and sending the first indication information, and determine whether to perform determining the first condition and sending the first indication information according to the pre-configuration information. The pre-configuration information includes an indication for determining to perform determining the first condition and sending the first indication information, and the first device determines to perform determining the first condition and sending the first indication information according to the pre-configuration information. The pre-configuration information includes an indication for determining not to perform determining the first condition and sending the first indication information, and the first device determines not to perform determining the first condition and sending the first indication information according to the pre-configuration information.

[0149] In an embodiment of the present disclosure, when the first device determines that the first condition is satisfied, it sends first indication information to indicate the release of resource collision. When a device receives the first indication information, it can perform resource coordination to release the resource collision when selecting resources.

[0150] Figure 3 It is a flowchart of a direct communication method shown according to an exemplary embodiment. As Figure 3 shown, the direct communication method is used in a second device, and the second device can be a device such as a terminal for performing direct communication, including the following steps.

[0151] In step S21, receive the first indication information, which is triggered by the first user equipment when it determines that the first condition is satisfied and is used to indicate the release of resource collision.

[0152] In step S22, perform resource selection based on the first indication information.

[0153] In an embodiment of the present disclosure, the second device can receive the first indication information based on the direct control information.

[0154] On the one hand, in an embodiment of the present disclosure, the downlink control information includes a first indication field, and the first indication field is used to indicate the first indication information. For example, in an embodiment of the present disclosure, the field that reuses the first part of the downlink control information for resource reservation can indicate the first indication information. On the other hand, in an embodiment of the present disclosure, a new second part of the downlink control information format is designed to indicate the first indication information in the second part of the downlink control information format. That is, the direct control information includes a first direct control information format, and the first direct control information format is used to indicate the first indication information.

[0155] When the present disclosure embodiment performs resource selection based on the first indication information, on the one hand, if the time-frequency resources reserved by the second device itself coincide with the time resources and / or frequency resources that have resource collision in the first indication information; and / or if the user equipment identifier indicated in the first indication information is the same as the user equipment identifier used by the second user equipment for direct communication, then the second user equipment performs time-frequency resource reselection. On the other hand, if the time-frequency resources reserved by the second device itself coincide with the time resources and / or frequency resources that have resource collision in the first indication information, and if the user equipment identifier used by the second user equipment for direct communication does not include the user equipment identifier indicated in the first indication information, then the second user equipment performs time-frequency resource reselection.

[0156] The first condition involved in the implementation process of the direct communication method executed by the second device in the embodiment of the present disclosure may refer to the first condition involved in the implementation process of the direct communication method executed by the first device, and will not be described in detail here. For example, in one implementation, the first condition includes one or more of the following: the first device detects that the reserved resources of at least two other devices different from the first device overlap. The measured value of the reference signal receiving power of one or more devices whose reserved resources overlap is greater than a specified threshold. The first device is a target user device that uses reserved resources to receive data, or one of the target user devices that uses reserved resources to receive data.

[0157] In one implementation, the designated threshold is obtained according to an indication of downlink control information; or, the designated threshold is obtained according to pre-configuration information.

[0158] In one implementation, the reserved resources that have a resource collision have a resource reservation period, and / or the resource reservation periods of the reserved resources that have a resource collision have a specific relationship. There is an integer multiple relationship between the resource reservation periods. In one implementation, the specific relationship is determined based on an indication of the downlink control information; or the specific relationship is determined based on pre-configuration information.

[0159] In the embodiment of the present disclosure, the first indication information includes one or more of the following:

[0160] An indication for resolving resource collisions. An indication of the time resources and / or frequency resources where resource collisions occurred. An indication of the user equipment identification where resource collisions occurred.

[0161] In one example, when the user equipment identifier of a resource collision is indicated in the downlink control information, in one implementation, the user equipment identifier includes the user equipment identifier contained in the monitored direct connection control information, and the resources reserved by the direct connection control information include at least part of the resources where the resource collision occurs. Among them, the identifier of the user equipment includes the source user equipment identifier, or the source user equipment identifier and the destination user equipment identifier. In another implementation, the user equipment identifier includes the identifier of a user equipment that is in direct communication with the first device, and the resources reserved by the user equipment include at least part of the resources where the resource collision occurs.

[0162] In one example, if the source user equipment identifier used when the downlink control information with resource reservation collision occurs is used to indicate the sending user equipment of the downlink control information of the reserved configuration, or the source user equipment identifier and the destination user equipment identifier indicate the sending user equipment of the downlink control information of the reserved configuration, on the one hand, the indicated user equipment needs to reselect resources to avoid collision. On the other hand, the indicated user equipment does not need to reselect resources; if other user equipment finds that the time-frequency resources reserved by itself overlap with the time-frequency resources indicated in the downlink control information where the resources collide, it needs to reselect resources.

[0163] In the direct communication method provided by an embodiment of the present disclosure, when a first device determines that a first condition for resource collision among different devices is met, the first device sends first indication information for indicating resource collision resolution, so that when resources selected by a second device collide in a Hidden Terminal scenario, the second device performs resource coordination to resolve the resource collision.

[0164] Based on the same concept, an embodiment of the present disclosure further provides a direct communication device.

[0165] It can be understood that, in order to implement the above functions, the direct communication device provided by an embodiment of the present disclosure includes corresponding hardware structures and / or software modules for executing each function. Combining the units and algorithm steps of the examples disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiments of the present disclosure.

[0166] Figure 4 It is a block diagram of a direct communication device shown according to an exemplary embodiment. Referring to Figure 4 , the direct communication device 100 is applied to a first device and includes a determination unit 101 and a sending unit 102.

[0167] The determination unit 101 is configured to determine a first condition, where the first condition characterizes that resources selected among different devices collide. The sending unit 102 is configured to send first indication information, and the first indication information is used to indicate resource collision resolution.

[0168] In one implementation, the first condition includes that the first device monitors that reserved resources of at least two other devices different from the first device overlap.

[0169] In one implementation, the first condition includes that measured values of reference signal receiving power of one or more devices with overlapping reserved resources are greater than a specified threshold.

[0170] In one implementation, the determination unit 101 is further configured to:

[0171] Receive downlink control information sent by a network device, and the specified threshold is obtained according to the indication of the downlink control information. Alternatively, the specified threshold is obtained according to preconfigured information.

[0172] In one implementation, the first indication information includes one or more of the following:

[0173] Indications for resolving resource collisions. Indications of time resources and / or frequency resources where resource collisions occur. Indications of user equipment identities where resource collisions occur.

[0174] In one implementation, the sending unit 102 sends first indication information based on sidelink control information.

[0175] In one implementation, the sidelink control information includes a first indication field for indicating the first indication information.

[0176] In one implementation, the sidelink control information includes a first sidelink control information format for indicating the first indication information.

[0177] In one implementation, the user equipment identity includes the user equipment identity included in the monitored sidelink control information, and the resources reserved by the sidelink control information include at least part of the resources where resource collisions occur.

[0178] In one implementation, the identity of the user equipment includes the source user equipment identity, or the source user equipment identity and the destination user equipment identity.

[0179] In one implementation, the user equipment identity includes the identity of the user equipment that communicates directly with the first device, and the resources reserved by the user equipment include at least part of the resources where resource collisions occur.

[0180] In one implementation, the sidelink communication device 100 further includes a receiving unit 103 configured to: receive downlink control information sent by a network device, where the downlink control information includes an indication for determining whether to perform the determination of the first condition and send the first indication information. The determination unit 101 is further configured to: determine to perform the determination of the first condition and send the first indication information according to the downlink control information. Or determine pre-configuration information including an indication of whether to perform the determination of the first condition and send the first indication information, and determine to perform the determination of the first condition and send the first indication information according to the pre-configuration information.

[0181] In one implementation, the first condition includes: the first device is the target user equipment that uses the reserved resources for data reception, or one of the target user equipments that uses the reserved resources for data reception.

[0182] In one implementation, the first condition includes: the reserved resources where resource collisions occur have a resource reservation period, and / or there is a specific relationship between the resource reservation periods of the reserved resources where resource collisions occur.

[0183] In one implementation, there is an integer multiple relationship between the resource reservation periods.

[0184] In one implementation, the specific relationship is determined based on the indication of the downlink control information. Alternatively, the specific relationship is determined according to pre-configured information.

[0185] Figure 5 It is a block diagram of a direct communication device shown according to an exemplary embodiment. Refer to Figure 5 , the direct communication device 200 is applied to a second device and includes a receiving unit 201 and a processing unit 202.

[0186] The receiving unit 201 is configured to receive first indication information, which is triggered by a first user equipment when it determines that a first condition is met and is used to indicate the release of resource collision. The processing unit 202 is configured to perform resource selection based on the first indication information.

[0187] In one implementation, the receiving unit 201 receives the first indication information in the following manner: receiving the first indication information based on the direct control information.

[0188] In one implementation, the direct control information includes a first indication field, and the first indication field is used to indicate the first indication information.

[0189] In one implementation, the direct control information includes a first direct control information format, and the first direct control information format is used to indicate the first indication information.

[0190] In one implementation, the processing unit 202 performs resource selection based on the first indication information in the following manner:

[0191] If the time-frequency resources reserved by itself coincide with the time resources and / or frequency resources where resource collision occurs in the first indication information. And / or if the user equipment identifier indicated in the first indication information is the same as the user equipment identifier used by the second user equipment for direct communication, then the second user equipment performs time-frequency resource reselection.

[0192] In one implementation, the processing unit 202 performs resource selection based on the first indication information in the following manner:

[0193] If the time-frequency resources reserved by itself coincide with the time resources and / or frequency resources where resource collision occurs in the first indication information, and if the user equipment identifier used by the second user equipment for direct communication does not include the user equipment identifier indicated in the first indication information, then the second user equipment performs time-frequency resource reselection.

[0194] In one implementation, the first indication information includes one or more of the following: an indication for releasing resource collision. An indication of the time resources and / or frequency resources where resource collision occurs. An indication of the user equipment identifier where resource collision occurs.

[0195] In one implementation, the first condition includes that the first device monitors that the reserved resources of at least two other devices different from the first device overlap.

[0196] In one implementation, the first condition includes that the measured values of the reference signal receiving power of one or more devices with overlapping reserved resources are greater than a specified threshold.

[0197] In one implementation, the specified threshold is obtained according to the indication of the downlink control information. Alternatively, the specified threshold is obtained according to the pre-configured information.

[0198] In one implementation, the first condition includes that the first device is the target user equipment that uses the reserved resources for data reception, or one of the target user equipments that use the reserved resources for data reception.

[0199] In one implementation, the first condition includes that the reserved resources with resource collisions have a resource reservation period, and / or there is a specific relationship between the resource reservation periods of the reserved resources with resource collisions.

[0200] In one implementation, there is an integer multiple relationship between the resource reservation periods.

[0201] In one implementation, the specific relationship is determined according to the indication of the downlink control information. Alternatively, the specific relationship is determined according to the pre-configured information.

[0202] Regarding the device in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments related to the method, and will not be elaborated here.

[0203] Figure 6 It is a block diagram of a device 300 for direct communication shown according to an exemplary embodiment. For example, the device 300 may be the first device or the second device involved in the embodiments of the present disclosure, such as a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0204] Referring to Figure 6 , the device 300 may include one or more of the following components: a processing component 302, a memory 304, a power component 306, a multimedia component 308, an audio component 310, an input / output (I / O) interface 312, a sensor component 314, and a communication component 316.

[0205] The processing component 302 generally controls the overall operation of the device 300, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the above-described methods. In addition, the processing component 302 may include one or more modules to facilitate the interaction between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate the interaction between the multimedia component 308 and the processing component 302.

[0206] The memory 304 is configured to store various types of data to support the operation of the device 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phone book data, messages, pictures, videos, etc. The memory 304 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk, or an optical disk.

[0207] The power component 306 provides power to the various components of the device 300. The power component 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 300.

[0208] The multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may not only sense the boundaries of the touch or swipe actions, but also detect the duration and pressure associated with the touch or swipe operations. In some embodiments, the multimedia component 308 includes a front camera and / or a rear camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each of the front camera and the rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0209] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC) that is configured to receive external audio signals when the device 300 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 further includes a speaker for outputting audio signals.

[0210] The I / O interface 312 provides an interface between the processing component 302 and peripheral interface modules, and the peripheral interface modules may be a keyboard, a click wheel, buttons, and the like. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0211] The sensor component 314 includes one or more sensors for providing an assessment of various aspects of the state of the device 300. For example, the sensor component 314 can detect the open / closed state of the device 300, the relative positioning of components, such as the display and keypad of the device 300. The sensor component 314 can also detect a change in the position of the device 300 or a component of the device 300, the presence or absence of user contact with the device 300, the orientation or acceleration / deceleration of the device 300, and the temperature change of the device 300. The sensor component 314 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 314 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 314 can further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0212] The communication component 316 is configured to facilitate communication between the device 300 and other devices in a wired or wireless manner. The device 300 can access a wireless network based on communication standards, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0213] In an exemplary embodiment, the apparatus 300 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above method.

[0214] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, and the above instructions can be executed by a processor 320 of the apparatus 300 to complete the above method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0215] Figure 7 FIG. is a block diagram of an apparatus 400 for direct communication according to an exemplary embodiment. For example, the apparatus 400 may be the first device or the second device involved in the embodiments of the present disclosure, such as being provided as a server. Referring to Figure 7 , the apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources represented by a memory 432 for storing instructions executable by the processing component 422, such as application programs. The application programs stored in the memory 432 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 422 is configured to execute instructions to perform the above method.

[0216] The apparatus 400 may further include a power component 426 configured to perform power management of the apparatus 400, a wired or network interface 450 (such as a wireless network interface) configured to connect the apparatus 400 to a network, and an input / output (I / O) interface 458. The apparatus 400 may operate based on an operating system stored in the memory 432, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSD TM or the like.

[0217] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 432 including instructions, and the above instructions can be executed by a processing component 422 of the apparatus 400 to complete the above method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0218] It can be further understood that in the present disclosure, "a plurality of" means two or more, and other quantifiers are similar thereto. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. The singular forms of "a", "the", and "said" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0219] It can be further understood that the terms "first", "second", etc. are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other and do not represent a specific order or importance. In fact, the expressions such as "first" and "second" can be used interchangeably completely. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0220] It can be further understood that although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood that these operations are required to be performed in the specific order shown or in a serial order, or that all the operations shown are required to be performed to obtain the desired result. In a specific environment, multitasking and parallel processing may be advantageous.

[0221] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include the common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0222] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A direct communication method, characterized in that, Applied to a first device, the method includes: Determine a first condition, where the first condition indicates that reserved resources selected by at least two other devices different from the first device collide, where the at least two other devices different from the first device include a second device and a third device; Sending first indication information to the second device, where the first indication information is used to indicate that resource collision is resolved; The first device establishes direct communication with the second device, the first device establishes direct communication with the third device, and both the second device and the third device select reserved resources from the Mode 2 resource collection using a Mode 2 resource selection method.

2. The direct communication method according to claim 1, characterized in that The first condition includes at least one of the following: The first device monitors that reserved resources of at least two devices other than the first device overlap, and one of the at least two devices has a direct communication relationship with the first device; The measured value of the reference signal received power of one or more devices whose reserved resources overlap is greater than a specified threshold; The first device is a target user equipment that uses the reserved resources to receive data; The first device is one of the target user devices that uses the reserved resources to receive data; The reserved resources that have resource collision have a resource reservation period; There is a specific relationship between the resource reservation periods of the reserved resources for which resource collision occurs.

3. The direct communication method according to any one of claims 1 to 2, characterized in that, The determining of the first condition includes at least one of the following: The first device monitors the first direct connection control information SCI and the second SCI, and the first reserved resources of the second device indicated by the first SCI overlap with the second reserved resources of the third device indicated by the second SCI; A measured value of a reference signal received power corresponding to the reserved resources of the second device and / or the third device is greater than a specified threshold.

4. The direct communication method according to claim 2 or 3, characterized in that, The method further comprises: receiving downlink control information sent by a network device, wherein the specified threshold is obtained according to an indication of the downlink control information; or, The specified threshold is obtained according to pre-configuration information.

5. The direct communication method according to any one of claims 1 to 4, characterized in that The first indication information includes one or more of the following: Instructions for resolving resource collisions; an indication of a time resource and / or a frequency resource where a resource collision occurs; Indication of the identity of the user equipment where a resource collision occurred.

6. The direct communication method according to claim 1, characterized in that The sending the first indication information includes: The first indication information is sent based on the direct connection control information.

7. The direct communication method according to claim 6, wherein The direct connection control information includes a first indication field, and the first indication field is used to indicate the first indication information.

8. The direct communication method according to claim 6 or 7, characterized in that, The direct connection control information includes a first direct connection control information format, and the first direct connection control information format is used to indicate the first indication information.

9. The direct communication method according to claim 5, wherein The user equipment identifier includes the user equipment identifier included in the monitored direct connection control information, and the resources reserved by the direct connection control information include at least part of the resources where resource collision occurs.

10. The direct communication method according to claim 9, characterized in that, The user equipment identifier includes a source user equipment identifier, or a source user equipment identifier and a destination user equipment identifier.

11. The direct communication method according to claim 9, wherein The user equipment identifier includes an identifier of a user equipment that is in direct communication with the first device, and the resources reserved by the user equipment include at least part of the resources where resource collision occurs.

12. The direct communication method according to claim 1, characterized in that, The method further comprises: Receive downlink control information sent by a network device, where the downlink control information includes an indication for determining whether to perform the determination of the first condition and the sending of the first indication information, and determine to perform the determination of the first condition and the sending of the first indication information according to the downlink control information; or Determine pre-configuration information including an indication for indicating whether to perform the determination of the first condition and the sending of the first indication information, and determine to perform the determination of the first condition and the sending of the first indication information according to the pre-configuration information.

13. The direct communication method according to claim 2, wherein There is an integer multiple relationship between the resource reservation periods.

14. The direct communication method according to claim 2, wherein The specific relationship is determined based on an indication in the downlink control information; or The specific relationship is determined according to pre-configuration information.

15. The direct communication method according to claim 1, characterized in that, There is no direct communication established between the second device and the third device.

16. A direct communication method, characterized in that, Applied to a second device, it includes: Receive a first indication information, which is triggered by a first device when it determines that a first condition is met and is used to indicate the release of resource collision, where the first condition indicates that the reserved resources selected by at least two other devices different from the first device collide, the at least two other devices different from the first device include a second device and a third device, the first device establishes a direct connection communication with the second device, the first device establishes a direct connection communication with the third device, and both the second device and the third device select reserved resources in a Mode 2 resource set using the Mode 2 resource selection method; Perform resource selection based on the first indication information.

17. The direct communication method according to claim 16, characterized in that The first condition includes at least one of the following: The first device monitors that the reserved resources of at least two other devices different from the first device overlap, and one of the at least two devices has a direct connection communication relationship with the first device; The measured value of the reference signal receiving power of one or more devices with overlapping reserved resources is greater than a specified threshold; The first device is a target user equipment that uses reserved resources for data reception; The first device is one of the target user equipments that use reserved resources for data reception; The reserved resources with resource collision have a resource reservation period; There is a specific relationship between the resource reservation periods of the reserved resources with resource collision.

18. The direct communication method according to any one of claims 16 to 17, characterized in that, The first condition is determined by adopting at least one of the following methods: The first device monitors a first direct connection control information SCI and a second SCI, and the first reserved resource of the second device indicated by the first SCI overlaps with the second reserved resource of the third device indicated by the second SCI; The measured value of the reference signal receiving power corresponding to the reserved resources of the second device and / or the third device is greater than a specified threshold.

19. The direct communication method according to claim 16, wherein The receiving of the first indication information includes: Receive the first indication information based on the direct connection control information.

20. The direct communication method according to claim 19, wherein The direct connection control information includes a first indication field, and the first indication field is used to indicate the first indication information.

21. The direct communication method according to claim 19 or 20, characterized in that The direct connection control information includes a first direct connection control information format, and the first direct connection control information format is used to indicate the first indication information.

22. The direct communication method according to claim 16, wherein Performing resource selection based on the first indication information includes: If the time-frequency resources reserved by itself coincide with the time resources and / or frequency resources of the resource collision in the first indication information, and / or if the user equipment identifier indicated in the first indication information is the same as the user equipment identifier used by the second user equipment for direct communication, then The second user equipment performs time-frequency resource reselection.

23. The direct communication method according to claim 16, characterized in that Resource selection based on the first indication information includes: If the time-frequency resources reserved by itself coincide with the time resources and / or frequency resources of the resource collision in the first indication information, and if the user equipment identifier used by the second user equipment for direct communication does not include the user equipment identifier indicated in the first indication information, then The second user equipment performs time-frequency resource reselection.

24. The direct communication method according to any one of claims 16 to 19, characterized in that, The first indication information includes one or more of the following: An indication for resolving resource collision; An indication of the time resources and / or frequency resources of the resource collision; An indication of the user equipment identifier of the resource collision.

25. The direct communication method according to claim 17, wherein The specified threshold is obtained according to the indication of the downlink control information; or, the specified threshold is obtained according to the pre-configured information.

26. The direct communication method according to claim 16, characterized in that, There is no direct communication established between the second device and the third device.

27. A direct connection communication device, characterized in that, Applied to the first device, it includes: A determination unit for determining a first condition, where the first condition characterizes that the reserved resources selected by at least two other devices different from the first device collide, and the at least two other devices different from the first device include a second device and a third device; A sending unit for sending first indication information to the second device, where the first indication information is used to indicate resolving resource collision; Wherein, the first device establishes direct communication with the second device, the first device establishes direct communication with the third device, and both the second device and the third device select reserved resources in the Mode 2 resource set using the Mode 2 resource selection method.

28. The direct communication device according to claim 27, characterized in that, The first condition includes at least one of the following: The first device monitors that the reserved resources of at least two other devices different from the first device coincide, and one of the at least two devices has a direct communication relationship with the first device; The measured value of the reference signal received power of one or more devices with coincident reserved resources is greater than the specified threshold; The first device is the target user equipment using the reserved resources for data reception; The first device is one of the target user equipment using the reserved resources for data reception; The reserved resources with resource collision have a resource reservation period; There is a specific relationship between the resource reservation periods of the reserved resources with resource collision.

29. The direct communication device according to any one of claims 27 to 28, characterized in that The determination unit determines the first condition in the following manner: The first device monitors a first direct communication control information SCI and a second SCI, and the first reserved resources of the second device indicated by the first SCI coincide with the second reserved resources of the third device indicated by the second SCI; The measured value of the reference signal received power corresponding to the reserved resources of the second device and / or the third device is greater than the specified threshold.

30. The direct communication device according to claim 28 or 29, characterized in that, The device further includes: a receiving unit, The receiving unit is configured to receive downlink control information sent by a network device, and the specified threshold is obtained according to an indication in the downlink control information; The determining unit is further configured to obtain the specified threshold according to preconfigured information.

31. The direct communication device according to any one of claims 27 to 30, characterized in that The first indication information includes one or more of the following: An indication for resolving resource collision; An indication of time resource and / or frequency resource where resource collision occurs; An indication of the user equipment identifier where resource collision occurs.

32. The direct communication device according to claim 27, characterized in that, The sending unit sends the first indication information in the following manner: Sending the first indication information based on direct connection control information.

33. The direct communication device according to claim 32, wherein The direct connection control information includes a first indication field for indicating the first indication information.

34. The direct communication device according to claim 32 or 33, characterized in that, The direct connection control information includes a first direct connection control information format for indicating the first indication information.

35. The direct communication device according to claim 31, wherein The user equipment identifier includes the user equipment identifier included in the monitored direct connection control information, and the resources reserved by the direct connection control information include at least part of the resources where resource collision occurs.

36. The direct communication device according to claim 35, wherein The identifier of the user equipment includes the source user equipment identifier, or the source user equipment identifier and the destination user equipment identifier.

37. The direct communication device according to claim 35, characterized in that, The user equipment identifier includes the identifier of the user equipment that performs direct connection communication with the first device, and the resources reserved by the user equipment include at least part of the resources where resource collision occurs.

38. The direct communication device according to claim 27, wherein The determining unit is further configured to: receive downlink control information sent by a network device, where the downlink control information includes an indication for determining whether to execute the determining of the first condition and sending the first indication information, and determine to execute the determining of the first condition and sending the first indication information according to the downlink control information; Or Determine preconfigured information including an indication for determining whether to execute the determining of the first condition and sending the first indication information, and determine to execute the determining of the first condition and sending the first indication information according to the preconfigured information.

39. The direct communication device according to claim 28, wherein There is an integer multiple relationship between the resource reservation periods.

40. The direct communication device according to claim 28, wherein The specific relationship is determined according to an indication in the downlink control information; or The specific relationship is determined according to preconfigured information.

41. The direct communication device according to claim 27, wherein There is no direct connection communication established between the second device and the third device.

42. A direct communication device, characterized in that, Applied to the second device, it includes: A receiving unit, configured to receive first indication information, which is triggered by a first device when determining that a first condition is met and is used to indicate resolving resource collision, where the first condition indicates that reserved resources selected by at least two other devices different from the first device collide, the at least two other devices different from the first device include the second device and the third device, where the first device establishes direct connection communication with the second device, the first device establishes direct connection communication with the third device, and both the second device and the third device select reserved resources from the Mode 2 resource set using the Mode 2 resource selection method; A processing unit, configured to perform resource selection based on the first indication information.

43. The direct communication device according to claim 42, wherein The first condition includes at least one of the following: The first device monitors that reserved resources of at least two other devices different from the first device overlap, and one of the at least two devices has a direct communication relationship with the first device; The measured reference signal receiving power of one or more devices with overlapping reserved resources is greater than a specified threshold; The first device is a target user equipment that uses reserved resources for data reception; The first device is one of the target user equipments that use reserved resources for data reception; The reserved resources with resource collision have a resource reservation period; There is a specific relationship between the resource reservation periods of the reserved resources with resource collision.

44. The direct communication device according to any one of claims 42 to 43, characterized in that The first condition is determined by using at least one of the following methods: The first device monitors a first direct control information SCI and a second SCI, and the first reserved resource of the second device indicated by the first SCI overlaps with the second reserved resource of the third device indicated by the second SCI; The measured reference signal receiving power corresponding to the reserved resources of the second device and / or the third device is greater than a specified threshold.

45. The direct communication device according to claim 42, wherein The receiving unit receives the first indication information in the following manner: Receiving the first indication information based on the direct control information.

46. The direct communication device according to claim 44, characterized in that, The direct control information includes a first indication field for indicating the first indication information.

47. The direct communication device according to claim 42 or 45, characterized in that, The direct control information includes a first direct control information format for indicating the first indication information.

48. The direct communication device according to claim 42, wherein The processing unit selects resources based on the first indication information in the following manner: If the time-frequency resources reserved by itself overlap with the time resources and / or frequency resources with resource collision in the first indication information, and / or if the user equipment identifier indicated in the first indication information is the same as the user equipment identifier used for direct communication with the second user equipment, then The second user equipment performs time-frequency resource reselection.

49. The direct communication device according to claim 42, wherein The base processing unit selects resources based on the first indication information in the following manner: If the time-frequency resources reserved by itself overlap with the time resources and / or frequency resources with resource collision in the first indication information, and if the user equipment identifier used for direct communication by the second user equipment does not include the user equipment identifier indicated in the first indication information, then The second user equipment performs time-frequency resource reselection.

50. The direct communication device according to any one of claims 42 to 44, characterized in that, The first indication information includes one or more of the following: An indication for resolving resource collision; An indication of the time resources and / or frequency resources with resource collision; An indication of the user equipment identifier with resource collision.

51. The direct communication device according to claim 43, wherein The specified threshold is obtained according to the indication of the downlink control information; or, the specified threshold is obtained according to the pre-configured information.

52. The direct communication device according to claim 42, wherein, There is no direct communication established between the second device and the third device.

53. A direct communication device, characterized in that, Comprising: A processor; A memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the direct communication method according to any one of claims 1 to 15.

54. A direct connection communication device, characterized in that, Comprising: A processor; A memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the direct communication method according to any one of claims 16 to 26.

55. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the first device, the first device is enabled to execute the direct communication method described in any one of claims 1 to 15.

56. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the second device, the second device is enabled to execute the direct communication method described in any one of claims 16 to 26.

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