Method and device for sending information

Abstract

The embodiment of the present application discloses a method and device for sending information, which relates to the field of communications. The method includes: a first terminal sends a first indication message to a second terminal, the first indication message is used to instruct the second terminal to report the first information; the second terminal reports the first information to the first terminal according to the first indication message, and the first information is used to indicate the channel state information on the channel resource; the first terminal sends a second indication message to the second terminal, and the second indication message is used to indicate the information of the first resource set, and the first resource set is determined by the first terminal with reference to the first information, wherein the resources in the first resource set are resources for sidelink communication. In this way, the resources for the sidelink communication determined by the first terminal are more accurate, which reduces the probability of resource conflicts when the devices in this group perform sidelink communication. The method provided in the embodiment of the present application can be applied to communication systems, such as V2X, LTE‑V, V2V, Internet of Vehicles, MTC, IoT, LTE‑M, M2M, Internet of Things, etc.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a method and device for sending information. Background Art

[0002] Sidelink connection technology, that is, terminal devices can communicate directly using wireless resources, is an important branch of cellular Internet of Things technology. It was first introduced in the application scenario of D2D (Device to Device Communication). The existence of this technology has created a broad prospect for applications such as the Internet of Things and the Internet of Vehicles, and has subverted the communication architecture and operation of traditional cellular networks. In Sidelink technology, resource allocation is divided into two methods, one is the resource allocation method based on the base station, and the other is the resource allocation method selected by the terminal independently. In the resource allocation method selected by the terminal independently, there is a probability of resource conflict because the selection of resources is not centrally controlled and allocated. How to reasonably and effectively compete for resources has always been an important research topic. Summary of the invention

[0003] An embodiment of the present application provides a method and device for sending information, which can enable group members in Sidelink technology to report first information to the group head, and the group head determines the resources for sidelink communication with reference to the received first information, and sends the resources for sidelink communication to the group members, thereby reducing the probability of resource conflicts occurring when the group of devices performs sidelink communication and improving the performance of the entire group communication.

[0004] In a first aspect, an embodiment of the present application provides a method for sending information, which is applied to a wireless communication system, wherein the wireless communication system includes a first terminal and a second terminal, and the second terminal is one or more. The method includes:

[0005] The first terminal sends a first indication message to the second terminal, wherein the first indication message is used to instruct the second terminal to report the first information;

[0006] The second terminal reports first information to the first terminal according to the first indication message, wherein the first information is used to indicate channel state information of the channel resource;

[0007] The first terminal sends a second indication message to the second terminal, wherein the second indication message is used to indicate information of a first resource set, the first resource set is determined by the first terminal with reference to the first information, wherein the resources in the first resource set are resources for sidelink communication.

[0008] Using this method, the second terminal sends the first information to the first terminal, and the first terminal determines a first resource set with reference to the first information. The resources in the first resource set are resources for sidelink communication. The resources for sidelink communication determined in this way are more accurate, and can reduce the probability of resource conflicts occurring when the devices in this group perform sidelink communication.

[0009] In one embodiment, at least one of the first terminal and the second terminal uses resources in the first resource set for sidelink communication.

[0010] In one implementation, the channel state information of the channel resource is first-type state information, and the first-type state information is used to indicate whether the channel quality of the channel resource meets a first threshold, or,

[0011] The channel state information of the channel resource is the second type of state information, and the second type of state information is the channel quality of the channel resource, or,

[0012] The channel state information of the channel resource is the third type of state information, and the third type of state information is used to indicate whether the bit error rate of the channel resource meets the second threshold;

[0013] The channel quality includes reference signal received power RSRP or signal to interference plus noise ratio SINR or reference signal received quality RSRQ.

[0014] In one implementation, the first indication message includes an indication of a reporting content type, and the reporting content type is one or more of the first category status information, the second category status information, or the third category status information.

[0015] In one implementation, the first resource set is determined by the first terminal with reference to the first information, and includes:

[0016] The first terminal determines a second resource set according to second information, where the second information is a set obtained by measurement by the first terminal, the second resource set is determined by the first terminal from a fourth resource set, a proportion of resources in the fourth resource set that meet a measurement threshold in the second terminal is greater than or equal to a first proportion, or a proportion of resources in the fourth resource set that meet the measurement threshold in the first terminal and the second terminal is greater than or equal to the first proportion, or the fourth resource set is a set obtained by measurement by the first terminal;

[0017] The first terminal determines a third resource set according to the first information and the second information, wherein the number of resources in the third resource set is a third number, and the first resource set includes the second resource set and the third resource set.

[0018] In this way, the first terminal first determines the second resource set according to the second information to ensure that the resources of the first terminal are sufficient, and then determines the third resource set according to the first information and the second information to meet the resource needs of the entire group.

[0019] In one implementation, when the reported content type is first type status information or second type status information, the first information is a resource set measured by the second terminal, and the third resource set is determined by the first terminal according to a random principle or a traffic priority principle.

[0020] In one implementation, when the reporting content type is the third type of state information, the first information is an interference set measured by the second terminal, and the method for the first terminal to determine the third resource set includes at least one of the following:

[0021] The first terminal arranges the interference set measured by the second terminal in descending order according to the traffic of the second terminal, and selects resources with the least interference from the interference set in order according to the arrangement order to add to the third resource set;

[0022] or,

[0023] The first terminal calculates an average interference value of resources according to the interference set measured by the second terminal, and selects a third number of resources with the smallest average interference value to add to the third resource set;

[0024] or,

[0025] The first terminal converts the interference value of the resource into spectrum efficiency based on the interference set measured by the second terminal, calculates the transmission duration of the resource in combination with the service volume of the second terminal, and selects a third number of resources with the shortest transmission duration to add to the third resource set.

[0026] In one implementation, the first indication message includes an indication of a set of resources to be measured, where the set of resources to be measured is used to indicate a location of a channel resource measured by the second terminal.

[0027] In one embodiment, the wireless communication system further includes a third terminal, the third terminal belongs to another group, and the first information includes information about interference of the third terminal to the resources to be measured in the resource set to be measured. In this way, when the first terminal determines the first resource set, the interference of adjacent terminals not in the group to the resources to be measured is considered, so that the resources for the sidelink communication finally determined are more accurate.

[0028] In one implementation, the first indication message includes an indication of a first information sending mechanism, and the first information sending mechanism includes first information reporting based on freely selected resources or first information reporting based on reserved resources.

[0029] In one implementation, the first indication message includes an indication of a reporting opportunity, where the reporting opportunity includes periodic reporting or aperiodic reporting.

[0030] In one implementation, the first terminal sends the first indication message to the second terminal, including: the first terminal measures the distance between the first terminal and the second terminal, and when the distance change reaches a first distance threshold, the first terminal sends the first indication message to the second terminal. This can solve the problem of delayed reporting of the first information due to a large change in the location of the second terminal.

[0031] In one implementation, the second terminal receives the first indication message and reports the first information to the first terminal, including:

[0032] The second terminal receives the first indication message, and reports the first information to the first terminal via a radio resource control RRC message, a media control unit MCE message, or a sidelink control indication SCI message.

[0033] In one implementation manner, it is characterized in that the first resource set is determined by the first terminal with reference to the first information, and includes:

[0034] The first resource set is determined by the first terminal with reference to the received first information and the available resource status sent by the fourth terminal, where the fourth terminal is the group head of other groups, or,

[0035] The first resource set is directly determined by the first terminal with reference to the received first information.

[0036] In one implementation, the first terminal sends the second indication message to the second terminal, including:

[0037] The first terminal sends a second indication message to the second terminal by including a radio resource control RRC message or a media control unit MCE message or a sidelink control indication SCI message.

[0038] Another aspect of the present application embodiment provides a method for sending information, which is applied to a first terminal, where the first terminal is included in a wireless communication system, and the wireless communication system also includes one or more second terminals. The method includes:

[0039] The first terminal sends a first indication message to the second terminal, where the first indication message is used to instruct the second terminal to report the first information;

[0040] The first terminal receives first information reported by the second terminal, wherein the first information is used to indicate channel state information of a channel resource;

[0041] The first terminal sends a second indication message to the second terminal, wherein the second indication message is used to indicate information of a first resource set, the first resource set is determined by the first terminal with reference to the first information, wherein the resources in the first resource set are resources for sidelink communication.

[0042] Using this method, the first terminal determines a first resource set with reference to the first information sent by the second terminal, wherein the resources in the first resource set are resources for sidelink communication. The resources for sidelink communication determined in this way are more accurate, and can reduce the probability of resource conflicts occurring when the devices in this group perform sidelink communication.

[0043] In one implementation, the channel state information of the channel resource is first-type state information, and the first-type state information is used to indicate whether the channel quality of the channel resource meets a first threshold, or,

[0044] The channel state information of the channel resource is the second type of state information, and the second type of state information is the channel quality of the channel resource, or,

[0045] The channel state information of the channel resource is the third type of state information, and the third type of state information is used to indicate whether the bit error rate of the channel resource is within the second threshold.

[0046] The channel quality includes reference signal received power RSRP or signal to interference plus noise ratio SINR or reference signal received quality RSRQ.

[0047] In one implementation, the first indication message includes an indication of a reporting content type, and the reporting content type is one or more of the first category status information, the second category status information, or the third category status information.

[0048] In one implementation, the first resource set is determined by the first terminal with reference to the first information, including:

[0049] The first terminal determines a second resource set according to second information, where the second information is a set obtained by measurement by the first terminal, the second resource set is determined by the first terminal from a fourth resource set, a proportion of resources in the fourth resource set that meet a measurement threshold in the second terminal is greater than or equal to a first proportion, or a proportion of resources in the fourth resource set that meet the measurement threshold in the first terminal and the second terminal is greater than or equal to the first proportion, or the fourth resource set is a set obtained by measurement by the first terminal;

[0050] The first terminal determines a third resource set according to the first information and the second information, wherein the number of resources in the third resource set is a third number, and the first resource set includes the second resource set and the third resource set.

[0051] In this way, the first terminal first determines the second resource set according to the second information to ensure that the resources of the first terminal are sufficient, and then determines the third resource set according to the first information and the second information to meet the resource needs of the entire group.

[0052] In one implementation, when the reported content type is first type status information or second type status information, the first information is a resource set measured by the second terminal, and the third resource set is determined by the first terminal according to a random principle or a traffic priority principle.

[0053] In one implementation, when the reporting content type is the third type of state information, the first information is an interference set measured by the second terminal, and the method for the first terminal to determine the third resource set includes at least one of the following:

[0054] The first terminal arranges the interference set measured by the second terminal in descending order according to the traffic of the second terminal, and selects resources with the least interference from the interference set in order according to the arrangement order to add to the third resource set;

[0055] or,

[0056] The first terminal calculates an average interference value of resources according to the interference set measured by the second terminal, and selects a third number of resources with the smallest average interference value to add to the third resource set;

[0057] or,

[0058] The first terminal converts the interference value of the resource into spectrum efficiency based on the interference set measured by the second terminal, calculates the transmission duration of the resource in combination with the service volume of the second terminal, and selects a third number of resources with the shortest transmission duration to add to the third resource set.

[0059] In one implementation, the first indication message includes an indication of a set of resources to be measured, where the set of resources to be measured is used to indicate a location of a channel resource measured by the second terminal.

[0060] In one embodiment, the wireless communication system further includes a third terminal, the third terminal belongs to another group, and the first information includes information about interference of the third terminal to the resources to be measured in the set of resources to be measured. In this way, when the first terminal determines the resources for the sidelink communication, the interference of adjacent terminals not in the group on the resources to be measured is taken into account, so that the resources for the sidelink communication finally determined are more accurate.

[0061] In one implementation, the first indication message includes an indication of a first information sending mechanism, and the first information sending mechanism includes first information reporting based on freely selected resources or first information reporting based on reserved resources.

[0062] In one implementation, the first indication message includes an indication of a reporting opportunity, where the reporting opportunity includes periodic reporting or aperiodic reporting.

[0063] In one implementation, the first terminal sends the first indication message to the second terminal, including: the first terminal measures the distance between the first terminal and the second terminal, and when the distance change reaches a first distance threshold, the first terminal sends the first indication message to the second terminal. This can solve the problem of delayed reporting of the first information due to a large change in the location of the second terminal.

[0064] In one implementation, the first resource set is determined by the first terminal with reference to the first information, including:

[0065] The first resource set is determined by the first terminal with reference to the received first information and the available resource status sent by the fourth terminal, where the fourth terminal is the group head of other groups, or,

[0066] The first resource set is directly determined by the first terminal with reference to the received first information.

[0067] In one implementation, the first terminal sends the second indication message to the second terminal, including:

[0068] The first terminal sends a second indication message to the second terminal by including a radio resource control RRC message or a media control unit MCE message or a sidelink control indication SCI message.

[0069] Another aspect of the present application embodiment provides a method for sending information, which is applied to a wireless communication system, wherein the wireless communication system includes a first terminal and a second terminal, and the second terminal is one or more terminals, and the method includes:

[0070] The second terminal sends a group joining application to the first terminal, and in response to a received application approval message sent by the first terminal, joins the first group to become a member of the first group;

[0071] The second terminal reports first information to the first terminal, where the first information is used to indicate channel state information of the channel resource;

[0072] The second terminal receives a second indication message sent by the first terminal, where the second indication message is used to indicate information of a first resource set. The first resource set is determined by the first terminal with reference to the first information, wherein the resources in the first resource set are resources for sidelink communication.

[0073] Using this method, the second terminal sends the first information to the first terminal to assist the first terminal in selecting a first resource set, wherein the resources in the first resource set are resources for sidelink communication. In this way, the resources for sidelink communication determined by the first terminal and received by the second terminal are more accurate, which can reduce the probability of resource conflicts occurring when the devices in this group perform sidelink communication.

[0074] In one implementation, the second terminal uses resources in the first resource set to perform sidelink communication.

[0075] In one implementation, the second terminal joins the first group to become a member of the first group, including:

[0076] The second terminal detects the first group, receives a first operation to join the first group and become a member of the first group, the first operation includes user selection, or,

[0077] The second terminal detects the first group, and autonomously chooses to join the first group to become a member of the first group.

[0078] In one implementation, before the second terminal reports the first information to the first terminal, the method further includes:

[0079] The first terminal receives a first indication message from the second terminal, where the first indication message is used to instruct the second terminal to report first information.

[0080] In one implementation, the channel state information of the channel resource is first-type state information, and the first-type state information is used to indicate whether the channel quality of the channel resource meets a first threshold, or,

[0081] The channel state information of the channel resource is the second type of state information, and the second type of state information is the channel quality of the channel resource, or,

[0082] The channel state information of the channel resource is the third type of state information, and the third type of state information is used to indicate whether the bit error rate of the channel resource is within the second threshold.

[0083] The channel quality includes reference signal received power RSRP or signal to interference plus noise ratio SINR or reference signal received quality RSRQ.

[0084] In one implementation, the first indication message includes an indication of a reporting content type, and the reporting content type is one or more of the first category status information, the second category status information, or the third category status information.

[0085] In one implementation, the first resource set is determined by the first terminal with reference to the first information, and includes:

[0086] The first terminal determines a second resource set according to second information, where the second information is a set obtained by measurement by the first terminal, the second resource set is determined by the first terminal from a fourth resource set, a proportion of resources in the fourth resource set that meet a measurement threshold in the second terminal is greater than or equal to a first proportion, or a proportion of resources in the fourth resource set that meet the measurement threshold in the first terminal and the second terminal is greater than or equal to the first proportion, or the fourth resource set is a set obtained by measurement by the first terminal;

[0087] The first terminal determines a third resource set according to the first information and the second information, wherein the number of resources in the third resource set is a third number, and the first resource set includes the second resource set and the third resource set.

[0088] In this way, the first terminal first determines the second resource set according to the second information to ensure that the resources of the first terminal are sufficient, and then determines the third resource set according to the first information and the second information to meet the resource needs of the entire group.

[0089] In one implementation, when the reported content type is first type status information or second type status information, the first information is a resource set measured by the second terminal, and the third resource set is determined by the first terminal according to a random principle or a traffic priority principle.

[0090] In one implementation, when the reporting content type is the third type of state information, the first information is an interference set measured by the second terminal, and the method for the first terminal to determine the third resource set includes at least one of the following:

[0091] The first terminal arranges the interference set measured by the second terminal in descending order according to the traffic of the second terminal, and selects resources with the least interference from the interference set in order according to the arrangement order to add to the third resource set;

[0092] or,

[0093] The first terminal calculates an average interference value of resources according to the interference set measured by the second terminal, and selects a third number of resources with the smallest average interference value to add to the third resource set;

[0094] or,

[0095] The first terminal converts the interference value of the resource into spectrum efficiency based on the interference set measured by the second terminal, calculates the transmission duration of the resource in combination with the service volume of the second terminal, and selects a third number of resources with the shortest transmission duration to add to the third resource set.

[0096] In one implementation, the first indication message includes an indication of a set of resources to be measured, where the set of resources to be measured is used to indicate a location of a channel resource measured by the second terminal.

[0097] In one embodiment, the wireless communication system further includes a third terminal, the third terminal belongs to another group, and the first information includes information about interference of the third terminal to the resources to be measured in the set of resources to be measured. In this way, when the first terminal determines the resources for the sidelink communication, the interference of adjacent terminals not in the group on the resources to be measured is taken into account, so that the resources for the sidelink communication finally determined are more accurate.

[0098] In one implementation, the first indication message includes an indication of a first information sending mechanism, where the first information sending mechanism is first information reporting based on freely selected resources or first information reporting based on reserved resources.

[0099] In one implementation, the first indication message includes an indication of a reporting opportunity, where the reporting opportunity includes periodic reporting or aperiodic reporting.

[0100] In one implementation, the first terminal reports the first information to the second terminal, including:

[0101] The first terminal measures the distance between the second terminal, and when the distance change reaches the second distance threshold, the first terminal non-periodically reports the first information to the second terminal, which can solve the problem of delayed reporting of the first information due to large changes in the location of the second terminal.

[0102] In one implementation, the first terminal reports the first information to the second terminal, including:

[0103] The first terminal reports the first information to the second terminal via a radio resource control RRC message, a media control unit MCE message, or a sidelink control indication SCI message.

[0104] Another aspect of the present application provides a method for sending information, which is applied to a wireless communication system, wherein the wireless communication system includes a first terminal, a second terminal, and a third terminal, wherein the first terminal and the second terminal belong to the same communication group, the first terminal is a group head, and the second terminal is a group member, and the method includes:

[0105] The first terminal sends a first indication message to the second terminal, where the first indication message is used to instruct the second terminal to report the first information, and the first indication message includes an indication of a resource set to be measured;

[0106] The second terminal reports first information to the first terminal according to the first indication message, where the first information includes interference information of the third terminal on the resources to be measured in the set of resources to be measured;

[0107] The first terminal sends a second indication message to the second terminal, wherein the second indication message is used to indicate information of a first resource set, wherein the resources in the first resource set are resources for sidelink communication, and the resources in the first resource set do not include resources whose interference with the resource set to be measured by the third terminal meets preset conditions.

[0108] Using this method, the second terminal reports the first information to the first terminal, and the first information includes interference information of terminals outside the group on the resources to be measured. Then, the first terminal takes into account the interference of terminals outside the group when determining the resources for the sidelink communication, so that the resources for the sidelink communication finally determined are more accurate, which can reduce the probability of resource conflicts occurring when the devices in this group perform sidelink communications.

[0109] In one embodiment, at least one of the first terminal and the second terminal uses resources in the first resource set for sidelink communication.

[0110] In one implementation, the third terminal does not belong to the communication group where the first terminal and the second terminal are located.

[0111] In one embodiment, the resources of the first resource set do not include resources whose interference with the resource set to be measured by the third terminal meets a preset condition, including: the resources in the first resource set do not include resources whose interference information of the third terminal to the resources to be measured in the resource set to be measured reaches an interference threshold, or the resources in the first resource set do not include resources whose interference information of the third terminal, the second terminal and the first terminal to the resources to be measured in the resource set to be measured reaches an interference threshold.

[0112] On the other hand, an embodiment of the present application provides a communication device, which includes a processor, and the processor is used to couple with a memory, read instructions in the memory, and enable the communication device to execute the method of the first aspect according to the instructions.

[0113] In one implementation, the communication device is a terminal or a chip.

[0114] On the other hand, an embodiment of the present application provides a computer program product comprising instructions. When the computer program product is run on a terminal, the terminal executes the method described in the first aspect above.

[0115] On the other hand, an embodiment of the present application provides a computer-readable storage medium, including instructions, which, when executed on a terminal, enable the terminal to execute the method described in the first aspect above.

[0116] On the other hand, the present application provides an information sending device, which is arranged in a terminal, and includes: a configuration sending unit, which is used to send a first indication message to a group member device when the device acts as a group head. A configuration receiving unit, which is used to receive a first indication message sent by the group head when the device acts as a group member device. A measurement unit, which is used to measure resources when the device acts as a group member device or a group head. An auxiliary information reporting unit, which is used to generate first information when the device acts as a group member device, and report the first information to the group head. An available resource decision unit, which is used to determine the resources for side link communication based on the first information reported by the group member devices and combined with its own measurement information when the device acts as a group head. An available resource configuration unit, which is used to configure the resources for side link communication to the group member devices when the device acts as a group head. BRIEF DESCRIPTION OF THE DRAWINGS

[0117] Figure 1 is a schematic diagram of a communication link in a mobile communication network;

[0118] Figure 2 A schematic diagram of the communication process of Sidelink technology;

[0119] Figure 3A-3B It is a schematic diagram of the allocation method of two resources in Sidelink technology;

[0120] Figure 3C-3D It is a flowchart of the allocation method of two resources in Sidelink technology;

[0121] Figure 3E A schematic diagram of a typical home scenario in Sidelink technology;

[0122] Figure 3F A schematic diagram of a typical vehicle platooning scenario in Sidelink technology;

[0123] Figure 4A A schematic diagram of an application scenario of an embodiment of the present application;

[0124] Figure 4B-4C Diagram of enabling the Sidelink function for a terminal;

[0125] Figure 5 A schematic diagram showing how the positional relationships among multiple groups lead to differences in resource selection;

[0126] Figure 6 A general flow chart of a method for sending information provided by an embodiment of the present application;

[0127] Figures 7A-7E A flowchart and schematic diagram of a method for sending information of a first type of status information report provided in an embodiment of the present application;

[0128] Figures 8A-8B A flowchart and schematic diagram of a method for sending information of a second type of status information report provided in an embodiment of the present application;

[0129] Figures 9A-9B A flowchart and schematic diagram of a method for sending information reported by a resource set for reporting the third type of status information provided in an embodiment of the present application;

[0130] Fig.10 A flowchart of a method for reporting information provided in an embodiment of the present application;

[0131] Fig.11 A flowchart of a method for a group head to trigger a group member to report first information provided in an embodiment of the present application;

[0132] Fig.12 A flowchart of another method for sending information provided in an embodiment of the present application;

[0133] Fig.13 An information sending device provided in an embodiment of the present application;

[0134] Fig.14 A schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0135] Fig.15 A structural schematic diagram of a vehicle system is provided for an embodiment of the present application;

[0136] Fig.16 A structural schematic diagram of a roadside device is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0137] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0138] The term "multiple" as used herein refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0139] With the development of wireless communication technology, mobile communication networks are gradually evolving towards 5G NR (New Radio) systems. In the 5G NR system, Sidelink technology is also introduced, that is, terminal devices can communicate directly using wireless resources. Figure 1As shown, the sidelink is different from the uplink and downlink between the terminal device and the base station. The sidelink refers to the link between the terminal devices and corresponds to the PC5 interface.

[0140] Similar to the Sidelink technology in the 4G LTE (Long Term Evolution) system, the Sidelink technology of the above NR system can be applied to application scenarios such as V2X (Vehicle to Everything). The physical channels of the Sidelink of the NR system are mainly composed of PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSBCH (Physical Sidelink Broadcast Channel) and PSFCH (Physical Sidelink Feedback Channel). The first three physical channels already exist in the Sidelink of the LTE system, and PSFCH is a new physical channel introduced by the Sidelink technology of the NR system to support HARQ (Hybrid Automatic Repeat Request) transmission. The PSSCH channel is mainly used to transmit Sidelink data information; the PSCCH is mainly used to transmit Sidelink control information, that is, it is used to transmit Sidelink Control Information (SCI) messages. In addition, there are two synchronization signals: Primary Sidelink Synchronization Signal (PSSS) and Secondary Sidelink Synchronization Signal.

[0141] Sidelink was first introduced in the LTE system and is mainly used in D2D (Device to Device Communication) technology. The main purpose is to ensure the effective communication of public safety information (Public Safety Communication). Later, the concept of V2X (Vehicle to Everything) was introduced in the LTE system, and Sidelink was also included as part of the V2X standardization. Sidelink is defined as a communication mode that enables direct communication of short-range services between terminal devices through the PC5 interface. In the latest version of 3GPP (3rd Generation Partnership Project), Sidelink resource allocation based on air interface assistance and PC5 interface management is regarded as the next research focus. This research helps to meet the V2X requirements for communication performance such as latency and reliability in the NR system, and is of great significance for communication scenarios in which users who can only communicate with V2X through Sidelink can independently select resource modes.

[0142] The communication process of Sidelink is as follows Figure 2 As shown in the figure, it is divided into two parts: synchronization and communication. In order to make all terminal devices enter the synchronization state during the synchronization process, there are currently two types of Sidelink synchronization processes: synchronization process based on GNSS (Global Navigation Satellite System) and synchronization process based on base stations. In the communication process, resources are allocated in two ways: Figure 3A It is a base station-based resource allocation method. In this resource allocation method, there is a control link between the base station and the terminal device; Figure 3B This is a resource allocation method selected autonomously by the terminal. In this resource allocation method, there is no control link between the base station and the terminal device.

[0143] Figure 3C The specific process of the base station-based resource allocation method is given. When terminal 1 needs to send data, it sends a resource request to the base station. After receiving the resource request, the base station sends the allocated resources to terminal 1 through DCI (Downlink Control Indicator). After receiving the DCI message, terminal 1 uses the resources indicated in the DCI message to send data to terminal 2. From the above process, it can be seen that in the base station-based resource allocation method, the terminal's Sidelink resources need to be centrally allocated by the base station, so Figure 3C The resource allocation method shown will generally not cause resource conflicts.

[0144] Figure 3D The specific process of the terminal autonomously selecting the resource allocation method is given. When terminal 1 needs to send data, terminal 1 first performs resource sensing (Resource Sensing). Specifically, terminal 1 measures all resources in the resource pool, and then selects a group of resources from the resource pool to send data. The configuration of the resource pool is divided into two scenarios. One is that the terminal is within the coverage of the base station network, and the configuration of the resource pool can be obtained from the system message of the base station; the other is that the terminal is not within the coverage of the base station network, and the configuration of the resource pool is pre-configured. From the above process, it can be seen that in the resource allocation method autonomously selected by the terminal, the terminal is completely autonomous in selecting resources, so Figure 3D The resource allocation method shown will cause resource conflicts, but since the terminal does not need to apply for resources from the base station, it saves signaling overhead and reduces data transmission latency. In addition, the resource allocation method selected by the terminal independently is also suitable for scenarios where the terminal is not within the coverage of the base station network or the base station network coverage is poor.

[0145] Sidelink technology has a wide range of application scenarios, including home scenarios, conference room scenarios, team game scenarios, and vehicle formation scenarios. Each application scenario includes multiple terminals. For example, the home scenario includes mobile phones, TVs, PCs, tablets, speakers, bracelets, headphones and other terminal devices; the conference room scenario includes large screens, PCs, mobile phones, tablets and other terminal devices; the team game scenario includes multiple game terminals; and the vehicle formation scenario includes multiple moving vehicles, pedestrians and roadside units (RSUs). Figure 3E A typical home scene 30 in the Sidelink technology is shown, including a mobile phone 31, a PC 32, a TV 33, a speaker 34, a tablet 35, a headset 36, and a bracelet 37. The devices can communicate directly with each other via Sidelink. Figure 3F The figure shows a typical vehicle formation scenario in the Sidelink technology, including pedestrian terminal equipment 311, vehicle 312, roadside unit RSU313, vehicle 314, and base station 316, and each device can communicate with each other. The communication between vehicle 312 and vehicle 314 is called V2V (Vehicle to Vehicle), the communication between vehicle 314 and roadside unit RSU313 is called V2I (Vehicle to Infrastructure), the communication between vehicle 314 and pedestrian terminal equipment 311 is called V2P (Vehicle to Pedestrian), and the communication between vehicle 314 and base station 316 is called V2N (Vehicle to Network).

[0146] Based on the above typical application scenarios, in Sidelink technology, the mechanism of operating in groups has become the main research object, where groups are also called communication groups. The mechanism of operating in groups has many advantages. Specifically, in a heavy load scenario, if all user devices compete for resources autonomously, the probability of resource conflicts and collisions will be very high. If there is a group head to coordinate the allocation of resources, the probability of resource conflicts and collisions can be greatly reduced. Resources are negotiated in a large granularity between groups, and the group heads in the group uniformly allocate resources, which can improve the efficiency of resource use. In addition, since the information interaction with the base station is reduced, the air interface delay can be reduced.

[0147] Figure 4AAn application scenario of an embodiment of the present application is given, in which multiple terminals form a group to enhance communication efficiency. The terminal 10 is a group head, which can also be called a Group Header or a group head terminal or a group head device. The group head can play the role of a part of the base station to coordinate the management of the entire group. A terminal is a device that provides voice and / or data connectivity to a user, such as a handheld device with a wireless connection function, a vehicle-mounted device, etc. A terminal can also be called a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, a user equipment, or a user device. The terminal may be a station (STA) in a wireless local area network (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, and a terminal in a next-generation communication system (e.g., a terminal in a fifth-generation (5G) communication network) or a terminal in a future-evolved public land mobile network (PLMN) network. Among them, 5G can also be referred to as a new radio (NR). In one possible application scenario of the present application, the terminal is a terminal that often works on the ground, such as a vehicle-mounted device. In the present application, for the sake of ease of description, the chip deployed in the above-mentioned device, or the chip may also be referred to as a terminal.

[0148] As an example, in the embodiment of the present application, the terminal can also be a wearable device. Wearable devices can also be called wearable smart devices, which are a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0149] exist Figure 4A The terminal 10 acting as the group head is also a type of terminal in terms of product form, but it has the capabilities of some base stations, that is, it has a central control function and can allocate resources to other terminals. Figure 4A In addition to the terminal 10 acting as the group head, the other terminals are group members, and the group members can also be called Group Members or group member terminals or group member devices.

[0150] In Sidelink technology, the operation of the group mechanism requires a complete set of process mechanisms, among which the key processes and technologies include: group establishment, group head selection, group maintenance, resource competition between groups, and resource allocation within a group.

[0151] In a possible implementation, the terminal may accept the user's setting to open the Sidelink group function, which belongs to a third-party application of the terminal or a system application of the terminal, such as Figure 4B As shown, on the Sidelink setting page 401 of the terminal, the user can enable the group function by turning on the Sidelink Group switch 402. Figure 4C As shown, the terminal receives the user's operation and turns on the Sidelink Group switch. At this time, the terminal finds that there are two groups, Group 1 and Group 2, around it. The terminal can accept the user's choice to join a certain group, or the terminal can choose to join a certain group independently. In this way, the user can selectively turn on the group function and selectively join a certain group, which enhances the terminal security and user experience.

[0152] The embodiments of the present application mainly relate to the problem of resource competition between groups in Sidelink technology. In the Sidelink technology using the group mechanism, the resources of each group can compete for resources on a group basis, or can compete for independent resources on a terminal basis. In the competition mode based on groups, the resources between groups can be mutually orthogonal or partially overlapped. The resources between groups need to be obtained through the group head for the entire group to compete. When the distance between two group heads is close, the selection of overlapping resources will cause greater interference to the signal on the overlapping resources, so the two group heads that are close will avoid selecting overlapping resources to increase the probability of successful signal demodulation. On the contrary, the two group heads that are far away will try to select overlapping resources to improve the utilization rate of resources. Therefore, the different positions of the group heads will lead to large differences in the resource results obtained by the competition, and some resources may not be suitable for the group members in the group.

[0153] like Figure 5 As shown in the figure, there are three groups, namely Group A, Group B-1 and Group B-2. The group head in Group B-1 is far away from Group A. Therefore, when competing for resources, the group head in Group B-1 may think that Group A has little interference with Group B-1, so it selects resources that partially overlap or completely overlap with Group A. The group member in the lower left corner of Group B-1 is very close to Group A. If resources that completely overlap with Group A are used, serious interference will occur, resulting in poor performance of these user devices. Similarly, the group head in Group B-2 is close to Group A. Therefore, when competing for resources, the group head in Group B-2 may think that Group A has a great interference with Group B-2, so it may choose resources that are completely staggered with Group A. The group member in the lower right corner of Group B-2 is far away from Group A, so it can use resources that partially overlap with Group A, which will result in low resource utilization.

[0154] In order to solve the above problems, an embodiment of the present application provides a method for sending information to assist the group head in selecting resources. The selection of resources is ultimately for communication between group members, so obtaining feedback from group members is an important means to ensure resource selection performance. Specifically, the group member terminal device measures the occupancy of resources on the channel and reports the measurement results to the group head. Based on its own measurement results and the results reported by the group members, the group head makes a unified decision on the resources for the final sidelink communication and sends the resources for the sidelink communication to all group members, thereby ensuring the performance of the group communication.

[0155] The overall process of a method for sending information provided by an embodiment of the present application is as follows: Figure 6 As shown, the method is applied to a wireless communication system, the wireless communication system includes a first terminal and a second terminal, wherein the first terminal is a group head, the second terminal is a group member, and the second terminal is one or more. The method mainly includes:

[0156] S601, a first terminal sends a first indication message to a second terminal, the first indication message being used to instruct the second terminal to report first information. The specific first indication message includes an indication of a first information reporting opportunity, an indication of a resource set to be measured, an indication of a reporting content type, an indication of a measurement threshold, an indication of a first information sending mechanism, etc.

[0157] S602, the second terminal reports the first information to the first terminal. The first information is used to indicate the channel state information of the channel resource, wherein the channel resource is the resource that the first terminal instructs the second terminal to measure. Specifically, the second terminal measures the resource according to the first indication message sent by the first terminal, and periodically or non-periodically reports the first information to the first terminal after the measurement is completed. The first information includes the interference information of the corresponding resource to be measured collected by the second terminal, and the interference information includes, for example, the interference information of the adjacent terminal on the resource to be measured. The adjacent terminal may include the terminal of this group or the terminal of the adjacent group. When the second terminal collects the interference information of the terminal of the adjacent group on the corresponding resource to be measured and reports it to the first terminal, the first terminal can refer to the interference information to select the resource to avoid the interference of the adjacent group on the transmission of the resource of this group, thereby improving the transmission efficiency. Of course, the interference information also includes the interference information of the non-adjacent terminal on the resource to be measured. In an optional implementation, when the second terminal measures the resource to be measured, it only measures the interference of the terminal equipment of the non-group on the resource to be measured, that is, the first information only includes the interference of the terminal equipment of other groups on the resource to be measured. Optionally, the second terminal has completed the measurement of resources before receiving the first indication message from the first terminal, and directly reports the first information according to the indication when receiving the first indication message sent by the first terminal.

[0158] S603, the first terminal sends a second indication message to the second terminal, the second indication message is used to indicate information of the first resource set, wherein the first resource set is determined by the first terminal with reference to the received first information, and the resources in the first resource set are resources for sidelink communication. The first terminal determines the first resource set based on the first information reported by the second terminal and in combination with the second information, the second information is the set measured by the first terminal, and then the first terminal sends the first resource set to the second terminal in the group through the second indication message.

[0159] Combination Figure 4A , Fig. 7AA method for sending information provided by an embodiment of the present application is shown. The method is applied to a wireless communication system. The wireless communication system includes a first terminal and a second terminal, wherein the first terminal is a group head, the second terminal is a group member, and the second terminal is one or more. The method is a report of first-type status information, including:

[0160] S701, a first terminal sends a first indication message to a second terminal, the first indication message is used to instruct the second terminal to report first information. The first information is used to indicate channel state information of a channel resource, wherein the channel resource is a resource that the first terminal instructs the second terminal to measure.

[0161] In an optional implementation, after the first terminal is selected to become the group head, the first terminal sends a first instruction message to the second terminal, instructing the second terminal to report the first information.

[0162] In an optional implementation, when the first terminal detects a newly added second terminal, that is, detects a newly added group member device, the first terminal sends a first indication message to the newly added second terminal or all second terminals, instructing the newly added second terminal or all second terminals to report the first information.

[0163] The specific first indication message includes the following indication information:

[0164] 1. Indication of reporting opportunity type: when the first terminal sends the first indication message to the second terminal, it needs to configure the corresponding reporting opportunity. The configuration of the reporting opportunity can be divided into two types: periodic configuration and non-periodic configuration.

[0165] The period configuration means that once the second terminal receives the configuration, it will perform corresponding measurements at a fixed period and report the first information to the first terminal. The period can be 1ms, 2ms, 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, 320ms, etc.

[0166] In an optional implementation, the first terminal may configure a measurement period and a reporting period for the second terminal respectively. Specifically, the measurement period and the reporting period may be the same or different.

[0167] In an optional implementation, the first terminal measures the moving speed of the second terminal, or the second terminal reports the moving speed to the first terminal, and the first terminal configures different periods according to the moving speed of the second terminal.

[0168] The non-periodic configuration means that the first terminal triggers the second terminal to report the first information according to demand, and the second terminal reports the first information at a certain time after receiving the instruction.

[0169] In an optional implementation, the first terminal dynamically instructs the second terminal to report the first information at a certain time in the indication information.

[0170] In an optional implementation, when the second terminal receives the indication information sent by the first terminal, the second terminal reports the first information after a default time period.

[0171] In an optional implementation, the first terminal measures the distance between the first terminal and the second terminal. When the distance change reaches a first distance threshold, the first terminal sends an indication of first information reporting to the second terminal to trigger the second terminal to report the first information non-periodically.

[0172] 2. Indication of the resource set to be measured. The first terminal configures the resource set to be measured for the second terminal. After receiving the indication of the resource set to be measured, the second terminal measures and reports the resources to be measured in the resource set to be measured. The resource set to be measured is used to indicate the location of the channel resources measured by the second terminal. Specifically, the resource set to be measured is the full set or subset of the resource pool of the first terminal, where the configuration of the resource pool is divided into two scenarios. One is that the first terminal is within the coverage of the base station network, and the configuration of the resource pool is obtained from the system message of the base station; the other is that the first terminal is not within the coverage of the base station network, and the configuration of the resource pool is pre-configured.

[0173] In an optional implementation, the first terminal indicates the entire resource pool or a subset of the resource pool as the resource set to be measured to the second terminal based on historical resource usage. For example, if according to statistics, the bit error rate of some resources in the resource pool is very high, these resources are not used as the resource set to be measured.

[0174] In an optional implementation, the second terminal reports the terminal's capabilities to the first terminal in advance, and the first terminal configures different resource sets to be measured according to the performance difference of the second terminal. For example, fewer resources in the resource set to be measured are configured for the second terminal with low performance, and more resources in the resource set to be measured are configured for the second terminal with high performance.

[0175] 3. Indication of the type of reported content. In this embodiment, the type of reported content is the first type of status information, which is used to indicate whether the channel quality of the channel resource meets the first threshold. Specific channel quality includes RSRP (Reference Signal Receiving Power), SINR (Signal to Interference plus Noise Ratio) or RSRQ (Reference Signal Receiving Quality), etc.

[0176] In an optional implementation, the second terminal may report 1 for resources that meet the measurement threshold, and report 0 for resources that do not meet the measurement threshold. Figure 7B As shown, it is assumed that the set of resources to be measured configured by the first terminal is S, including 5 measurement resources. If the measurement values ​​of resource 1 and resource 5 are lower than the measurement threshold, the second terminal sets 1 on the corresponding resources; if the measurement values ​​of the remaining resources are not lower than the measurement threshold, the second terminal sets 0 on the corresponding resources.

[0177] 4. Indication of the measurement threshold, i.e., indication of the first threshold. For the reporting content type of this embodiment, the first terminal may indicate the measurement threshold of the group member device in the reporting content type, or may default, and the second terminal uses the default value. In this embodiment, when the interference in the indication of the reporting content type is RSRP, the measurement threshold includes -60dBm, -65dBm, -70dBm, -75dBm, -80dBm, -85dBm, etc.

[0178] 5. Indication of the first information sending mechanism. In an optional implementation, the first terminal is configured with a reporting indication of the first information based on the reserved resources, and after receiving the indication, the second terminal reports the first information on the reserved resources, so that the first terminal can receive all the first information reported by the second terminal within the expected time.

[0179] In an optional implementation, the first terminal is configured with a reporting indication of first information based on free resource selection, and after receiving the indication, the second terminal needs to sense the resource, and when sensing the appropriate resource, the first information is reported to the first terminal. In this reporting method, since there is a possibility of resource conflict when obtaining the appropriate resource through sensing, the first terminal needs to start a timer to determine whether the first information reported by the second terminal is received in time.

[0180] The first terminal may package the above-mentioned indication information into one message and send it to the second terminal, or may send it to the second terminal in several messages, which is not limited in the embodiment of the present application. The first terminal may send the first indication message to the second terminal through messages such as RRC (Radio Resource Control) messages, MCE (MAC Control Element) messages, and SCI (Sidelink Control Indicator) messages, and the type of bearer message is not limited in the embodiment of the present application. The first terminal sends the first indication message to the second terminal after acquiring suitable resources through perception. Since there is a possibility of resource conflict in acquiring suitable resources through perception, the first terminal may use multiple retransmissions to increase the probability of successfully sending the first indication message.

[0181] S702, the first terminal and the second terminal measure the resources. Specifically, the second terminal measures the resources to be measured in the resource set to be measured indicated by the first terminal. The first terminal can measure all the resources in the resource pool, or it can measure according to the union of the resource sets to be measured configured for all second terminals. In this embodiment, when the interference in the indication of the reported content type is RSRP, the second terminal and the first terminal measure RSRP for each resource. If the second terminal is a terminal device with no perception capability or a terminal device with partial perception capability, the second terminal can obtain the measurement result by receiving the measurement information shared by the surrounding second terminals. Terminal devices with no perception capability are generally terminal devices with relatively high power consumption requirements, such as mobile phones, IoT mobile devices, etc. Terminal devices with partial perception capability are generally terminal devices with relatively low performance and cannot fully perceive resources, such as terminal devices of roadside units, etc.

[0182] In an optional implementation, when measuring the resources to be measured, the first terminal and the second terminal do not distinguish whether the interference to the resources to be measured comes from terminal devices in the same group or terminal devices outside the same group, that is, what is measured is the interference of all terminal devices to the resources to be measured.

[0183] In an optional implementation, when the first terminal and the second terminal measure the resources to be measured, they only measure the interference of terminal devices outside the group on the resources to be measured. Optionally, the mechanism of the zero-power CSI (Channel State Information) reference signal can be used to obtain the interference of terminal devices outside the group on the resources to be measured. Specifically, the design of the time-frequency position of the zero-power CSI reference signal is associated with the group, that is, the time-frequency position of the zero-power CSI reference signal used by the terminal devices in the group is consistent, while the time-frequency position of the zero-power CSI reference signal of different groups is different. Since the terminal devices in this group do not transmit power on the time-frequency resources of the corresponding zero-power CSI reference signal, the signal energy measured by the terminal devices in this group on the time-frequency resources of the corresponding zero-power CSI reference signal of this group is the interference generated by the terminal devices outside the group. Optionally, the mechanism of the SCI (Sidelink Control Indicator) broadcast by this group can be used to obtain the interference of terminal devices outside the group on the resources to be measured. Specifically, for the resources to be measured with data transmission, the terminal devices in the group can receive the SCI in the group, measure the RSRP (Reference Signal Received Power) of the PSSCH DMRS (Demodulation Reference Signal) indicated in the SCI, and when there are multiple DMRS symbols, perform linear averaging, and then normalize the measured RSRP to the RSRP on each RE (Resource Element). In addition, the terminal devices in the group can measure the resources to be measured to obtain RSSI (Received Signal Strength Indicator), and normalize the measured RSSI to the RSSI on each RE. Finally, the RSSI on each RE is subtracted from the RSRP on each RE to obtain the interference of terminal devices outside the group on the resource to be measured. For the resources to be measured without data transmission, the terminal devices in the group directly measure the resources to be measured to obtain RSSI, and normalize the measured RSSI to the RSSI on each RE as the interference of terminal devices outside the group on the resource to be measured. The embodiment of the present application does not limit the implementation method of obtaining the interference caused by terminal devices outside the group to the resource to be measured.

[0184] In an optional implementation, step S702 is performed before S701, and the second terminal has completed the measurement of all resources in the resource pool before receiving the first indication message sent by the first terminal. The resource pool can be obtained from the base station or pre-configured. In this way, after receiving the first indication message, the second terminal can directly report the first information according to the indication information.

[0185] S703, the second terminal reports the first information to the first terminal. Specifically, when the reporting opportunity type configured by the first terminal is periodic reporting, the second terminal reports the first information at a fixed time according to the period, such as Figure 7C When the reporting opportunity type configured by the first terminal is non-periodic reporting, the first terminal can dynamically instruct the second terminal to report the first information at a certain time, or when the second terminal receives the instruction message, it reports the first information at a time after the default time length (n time length), such as Fig.7D Optionally, the first terminal may selectively trigger some second terminals to report the first information by using a non-periodic reporting method. For example, when the first terminal needs to obtain the first information of a second terminal, the non-periodic reporting method may be used to instruct the second terminal to report the first information separately.

[0186] After the second terminal confirms the reporting time, the first information is sent to the first terminal according to the specific sending mechanism configured by the first terminal. When the sending mechanism configured by the first terminal is to report the first information based on the reserved resources, the second terminal uses the reserved resources to report the first information. When the sending mechanism configured by the first terminal is to report the first information based on the free selection of resources, the second terminal first senses the resources and then reports the first information.

[0187] In combination with any of the foregoing implementations, in an optional implementation, the first information reported by the second terminal is M bits, where M is the number of resources to be measured in the set of resources to be measured indicated by the first terminal, and each bit represents whether the measurement of a resource meets the measurement threshold. When the measurement of the resource is lower than the measurement threshold, the corresponding bit position is 1; when the measurement of the resource is not lower than the measurement threshold, the corresponding bit position is 0. In this way, when the first terminal receives the first information sent by the second terminal, the first terminal can obtain the measurement result of each resource in a one-to-one correspondence manner according to the indication of the set of resources to be measured sent to the second terminal.

[0188] In combination with any of the foregoing implementations, in an optional implementation, the first information reported by the second terminal is M bytes, where M is the number of resources indicated by the first terminal, and each byte represents whether the measurement of a resource meets the measurement threshold. When the measurement of the resource is lower than the measurement threshold, the corresponding byte is filled with non-0; when the measurement of the resource is not lower than the measurement threshold, the corresponding byte is filled with 0. In this way, when the first terminal receives the first information sent by the second terminal, the first terminal can obtain the measurement result of each resource block in a one-to-one correspondence manner according to the indication of the resource set to be measured sent to the second terminal.

[0189] In combination with any of the foregoing implementations, in an optional implementation, the first information reported by the second terminal includes a time-frequency position and a measurement result of a group of resources. In this way, when the first terminal receives the first information reported by the second terminal, the first terminal can directly obtain the measurement result of the resource at a specific time-frequency position.

[0190] When the first terminal receives the first information reported by the second terminal, the first terminal saves the first information. Fig. 7E The example of saving the first information of the second terminal in a table is given. The blank position in the table represents that the first terminal does not instruct the second terminal to measure the resource block at this position, for example, the first terminal does not instruct the second terminal 2 to measure resource 1. The first terminal may also use other methods to store the first information reported by the second terminal, which is not limited in the embodiment of the present application.

[0191] In combination with any of the foregoing implementations, in an optional implementation, the second terminal carries the first information through messages including RRC (Radio Resource Control) messages, MCE (MAC Control Element) messages, SCI (Sidelink Control Indicator) messages, etc. Among them, the SCI message is carried through a control channel (Physical Sidelink Control Channel), so the user identification of the reported second terminal must be added to the first information, so that the first terminal can identify the second terminal reporting the first information. RRC messages and MCE messages are carried through a data channel (Physical Sidelink Shared Channel), so the first terminal can identify the reported second terminal through the scrambling information when receiving the first information.

[0192] In summary of any of the aforementioned embodiments, in an optional implementation manner, after the second terminal reports the first information to the first terminal, the second terminal measures the distance between the second terminal and the first terminal, and when the change in the distance reaches the second distance threshold, the second terminal actively reports the first information to the first terminal. This can solve the problem of delayed reporting of the first information due to a large change in the position of the second terminal.

[0193] It should be noted that the measurement value obtained by the second terminal can be directly compared with the measurement threshold to generate the first information for reporting, or the measurement value obtained by the second terminal can be filtered and compared with the measurement threshold to generate the first information for reporting, which is not limited in the embodiment of the present application. In addition, the wireless communication system also includes a third terminal, the third terminal belongs to another group, and the first information includes information about the interference of the third terminal to the resources to be measured in the resource set to be measured.

[0194] S704, the first terminal obtains available candidate resources. Specifically, the first terminal refers to the first information reported by the second terminal and combines the second information to determine the available candidate resources, wherein the first information is a resource set measured by the second terminal, and the second information is a resource set measured by the first terminal.

[0195] In an optional implementation, the first information includes a first measurement result obtained by the second terminal on the resources to be measured in the resource set to be measured, and the first terminal obtains a second measurement result by measuring the resources to be measured in the resource set to be measured, and the first terminal takes a resource set determined by the intersection of the first measurement result and the second measurement result as an available candidate resource.

[0196] In an optional implementation manner, the resource sets measured by the second terminal are S1, S2, ..., S N , where N is the number of group members. The resource set measured by the first terminal is S0, and the number of elements of the resource set S0 is |S0|. The number of available candidate resources determined by the first terminal is K, and the available candidate resources include the second resource set and the third resource set.

[0197] First, in order to ensure that the first terminal has sufficient resources available, the first terminal determines the second resource set according to the first information and the second information. Specifically, the first terminal selects K1 resources from the fourth resource set S′. The selected K1 resource set is That is, the second resource set. The proportion of resources in the fourth resource set S′ that meet the measurement threshold in the second terminal is greater than or equal to the first proportion, and the first proportion can be 60% or 80%, etc. If the first proportion is 100%, it means taking the intersection, and if the first proportion is 1 / N, it means taking the union; or the proportion of resources in the fourth resource set S′ that meet the measurement threshold in the first terminal and the second terminal is greater than or equal to the first proportion, and the first proportion can be 60% or 80%, etc. If the first proportion is 100%, it means taking the intersection, and if the first proportion is 1 / (1+N), it means taking the union. The intersection of S′ and S0 is S′∩S0, and the number of elements in S′∩S0 is |S′∩S0|. When |S′∩S0| is greater than or equal to K1, the group head selects the K1 resources from S′∩S0 to add to the available candidate resources, wherein the K1 resources are the K1 resources with the least interference in the resource set S0 measured by the first terminal, or the K1 resources are K1 resources randomly selected from S′∩S0; when |S′∩S0| is less than K1, the first terminal selects all resources in S′∩S0 to add to the available candidate resources, and selects K1-|S′∩S0| resources from S0 to add to the available candidate resources, wherein the K1-|S′∩S0| resources are the K1-|S′∩S0| resources with the least interference in S0, or the K1-|S′∩S0| resources are K1-|S′∩S0| resources randomly selected from S0.

[0198] Then the first terminal determines a third resource set according to the first information and the second information. Specifically, the first terminal selects K-K1 resources from the unselected resources to add to the available candidate resources, where the set consisting of K-K1 resources is the third resource set. Specifically, S″ is The relative complement in S', that is, the elements in S" belong to S' but not to The number of elements in the relative complement set S″ is |S″|. When K-K1 is less than or equal to |S″|, K-K1 resources are randomly selected from S″ to be added to the available candidate resources; when K-K1 is greater than |S″|, the first terminal selects all resources in S″ to be added to the available candidate resources, and then selects resources from S1, S2, ..., S N Randomly select K-K1-|S″| resources from the unselected resources to add to the available candidate resources, or preferentially select K-K1-|S″| resources from the resource set measured by the second terminal with large business volume to add to the available candidate resources. If these resources are not enough, continue to select resources with the least interference from S0 to add to the available candidate resources until the resource demand of the first terminal is met. When selecting resources, the selected resources will not be repeatedly selected.

[0199] It should be noted that the value of K1 may be equal to K, that is, the first terminal directly selects K1 resources from the fourth resource set to meet the demand for available candidate resources.

[0200] S705, the first terminal determines the first resource set according to the available candidate resources of the group and the available resources sent by the fourth terminal, the resources in the first resource set are the resources for sidelink communication, and the fourth terminal is the group head of other groups. Specifically, after determining the available resources, the fourth terminal sends the available resource situation to the first terminal, and the first terminal finally decides on the first resource set according to the available candidate resources determined in step S704 and the available resources of other groups. For example, the available candidate resources obtained in step S704 are resource 1, resource 2, resource 3, resource 4 and resource 5, and the available resources received from the fourth terminal are resource 3 and resource 4, then the first terminal decides the first resource set to be resource 1, resource 2 and resource 5. When the first terminal decides on the first resource set, it notifies the fourth terminal of the first resource set.

[0201] In combination with any of the foregoing embodiments, in an optional embodiment, if the first terminal is within the coverage of the base station network, the first terminal can report the available candidate resources to the base station, the base station makes a unified decision to obtain the available resources of the group to which the first terminal belongs, and then configures the available resources to the first terminal.

[0202] In an optional implementation, step S705 is not executed, that is, the available candidate resources obtained in step S704 are directly used as the first resource set, that is, the first terminal directly determines the first resource set based on the received first information, and there is no need to notify the group heads of other groups of the first resource set, and step S706 is directly executed.

[0203] S706, the first terminal sends a second indication message to the second terminal, where the second indication message is used to indicate information of the first resource set. When step S705 exists in this embodiment, the first terminal sends the first resource set determined in step S705 to the second terminal. When step S705 does not exist in this embodiment, the first terminal directly sends the available candidate resources obtained in step S704 as the first resource set to the second terminal.

[0204] In an optional implementation, the first terminal sends the second indication message to the second terminal after acquiring appropriate resources through perception. Since there is a possibility of resource conflict in acquiring appropriate resources through perception, the first terminal can use multiple retransmissions to improve the success rate of message sending. Specifically, the first terminal can send the second indication message to the second terminal through messages including RRC (Radio Resource Control, radio resource control) messages, MCE (MAC Control Element, MAC control unit) messages, SCI (Sidelink Control Indicator, Sidelink control indication) messages, etc. When the information of the second indication message is small, it is more suitable to use SCI messages for carrying, which can save resource overhead; when the information of the second indication message is large, it is more suitable to use RRC messages or MCE messages for carrying, which can facilitate the expansion of the size of the second indication message.

[0205] S707: At least one of the first terminal and the second terminal uses resources in the first resource set to perform sidelink communication. Fig. 7A Specifically, when the terminal devices in the group, including the first terminal and the second terminal, need to send data to other devices in the group, they sense the resources in the first resource set to obtain appropriate sidelink resources, and then send data through the sidelink resources.

[0206] Combination Figure 4A , Fig. 8A A method for reporting information provided by an embodiment of the present application is shown. The method is applied to a wireless communication system. The wireless communication system includes a first terminal and a second terminal, wherein the first terminal is a group head, the second terminal is a group member, and the second terminal is one or more. The method is a report of the second type of status information, including:

[0207] S801: A first terminal sends a first indication message to a second terminal, where the first indication message is used to instruct the second terminal to report first information. Specifically, the indication information in the first indication message includes an indication of the type of content to be reported and an indication of a measurement threshold. Fig. 7A Except for the difference in step S701, other indication information such as Fig. 7A The description of step S701 is not repeated here.

[0208] In this embodiment, the reporting content type is the second type of status information, and the second type of status information is the channel quality of the channel resource. Specific channel quality includes RSRP (Reference Signal Receiving Power), SINR (Signal to Interference plus Noise Ratio) or RSRQ (Reference Signal Receiving Quality), etc. Figure 8B As shown, assuming that the measurement resource set configured by the first terminal for the second terminal is S, including 5 measurement resources, when the interference measurement indication is RSRP, the interference values ​​on the 5 measurement resources obtained by the second terminal after measurement are -80dBm, -85dBm, -75dBm, -70dBm, and -80dBm, respectively.

[0209] In this embodiment, since the second terminal directly reports the interference measurement value, the first terminal does not need to send an indication of the measurement threshold to the second terminal.

[0210] S802, the first terminal and the second terminal measure resources. The specific measurement method is consistent with the description in step S702, and will not be repeated here.

[0211] and Fig. 7A Similar to the description of step S702 in , in an optional implementation manner, step S802 is performed before S801, and the second terminal has completed the measurement of all resources in the resource pool before receiving the first indication message sent by the first terminal. The resource pool can be obtained from the base station or pre-configured. In this way, after receiving the first indication message, the second terminal directly reports the first information according to the indication information.

[0212] S803: The second terminal reports the first information to the first terminal. Fig. 7A Except for the difference in step S703, the rest of the contents are the same as Fig. 7A The description of step S703 in FIG. 1 is the same as that of step S703 in FIG. 1 , and will not be repeated here. In this embodiment, the second terminal measures the designated resource and reports the specific interference value to the first terminal.

[0213] In an optional implementation manner, the second terminal measures the designated resource to obtain an interference value but does not perform any processing, and directly reports the specific interference value to the first terminal.

[0214] In an optional implementation manner, the second terminal measures the designated resource to obtain the interference value and performs processing such as filtering and smoothing, and then reports the processed measurement result to the first terminal.

[0215] S804, the first terminal obtains available candidate resources. Specifically, the first terminal refers to the first information reported by the second terminal and combines the second information to decide on the available candidate resources, wherein the first information is the interference set measured by the second terminal, and the second information is the interference set measured by the first terminal.

[0216] The interference sets measured by the second terminal are S1, S2, ..., S N , where N is the number of group members, and the interference set measured by the first terminal is S0. The number of available candidate resources determined by the first terminal is K. The available candidate resources include a second resource set and a third resource set.

[0217] First, in order to ensure that the first terminal has sufficient resources available, the first terminal determines the second resource set according to the second information, wherein the second information is the resource set S0 measured by the first terminal, and the second resource set is determined by the first terminal from the fourth resource set. In this embodiment, the fourth resource set is the resource set S0 measured by the first terminal. Specifically, the first terminal selects K1 resources with the least interference from S0 to add to the available candidate resources, wherein K1 is less than or equal to K. Then the first terminal determines the third resource set according to the first information and the second information. Specifically, the first terminal selects K-K1 resources from the unselected resources to add to the available candidate resources. The set composed of K-K1 resources is the third resource set, and the number of resources K-K1 of the third resource set is the third number.

[0218] In an optional implementation manner, the first terminal arranges the interference set measured by the second terminal in descending order according to the traffic of the second terminal, and the interference set measured by the second terminal after the descending order is S′1, S′2, . . . , S′ N , where S′1 is the interference set measured by the second terminal with the largest traffic volume, S′ N The first terminal selects the resource with the least interference from the interference set in descending order and adds it to the available candidate resources until K-K1 available candidate resources are selected. When selecting resources, the selected resources will not be selected again.

[0219] In another optional implementation, the first terminal calculates the interference average value of each resource. When the measured interference value is RSRP, the calculation formula of the interference average value is: l can take the value 0 or 1, where represents the interference value obtained by the first terminal measuring the mth resource, The first terminal selects K-K1 resources with the smallest average interference value to add to the available candidate resources, and does not repeat the selection of the selected resources when selecting resources.

[0220] In another optional implementation, the first terminal converts the interference value on each resource into spectrum efficiency. When the measured interference value is RSRP, the specific conversion formula is: Where E n,m represents the spectrum efficiency of the nth second terminal in the mth resource, rsrp0 is a fixed value (for example, it can be -80dBm), represents the interference value measured by the nth second terminal on the mth resource. Then, the transmission time of each resource is calculated in combination with the traffic of the second terminal. The specific calculation formula is: Among them G n The first terminal selects K-K1 resources with the shortest transmission time and adds them to the available candidate resources. When selecting resources, the selected resources are not selected again.

[0221] It should be noted that the value of K1 may be equal to K, that is, the first terminal directly selects K1 resources from the fourth resource set to meet the demand for available candidate resources.

[0222] Since the first information reported by the second terminal in this embodiment is the specific interference value of the resource, in an optional implementation manner, the first terminal can set different measurement thresholds according to the terminal capabilities reported by the second terminal. For example, for a terminal with low requirements for latency and throughput, the first terminal can set a higher measurement threshold; for a terminal with high requirements for latency and throughput, the first terminal can set a lower measurement threshold. In this way, the available candidate resources obtained for different second terminals are different.

[0223] S805: The first terminal determines a first resource set based on the candidate resources available in the group and the available resources sent by the group heads of other groups. The resources in the first resource set are resources for sidelink communication. Fig. 7A The description of step S705 is consistent with that of step S705, and will not be repeated here.

[0224] It should be noted that if the available candidate resources obtained for different second terminals in step S804 are different, then the first resource sets determined by the first terminal for different second terminals in combination with the available resource conditions sent by the group heads of other groups are also different. After the first terminal obtains the first resource set of each second terminal, the first terminal notifies the group heads of other groups of the intersection of the first resource sets of all second terminals.

[0225] S806: The first terminal sends a second indication message to the second terminal, where the second indication message is information indicating the first resource set. Fig. 7A The description of step S706 is consistent with that of step S706 in the above description and will not be repeated here.

[0226] It should be noted that, when different first resource sets are obtained by decision for different second terminals, the first resource sets sent by the first terminal to different second terminals are also different.

[0227] S807: At least one of the first terminal and the second terminal uses resources in the first resource set to perform sidelink communication. Fig. 8A This step is not shown in FIG. Fig. 7A The description of step S707 is consistent with that of step S707, and will not be repeated here.

[0228] Combination Figure 4A , Fig. 9A A method for sending information provided by an embodiment of the present application is shown, and the method is applied to a wireless communication system, the wireless communication system includes a first terminal and a second terminal, wherein the first terminal is a group head, the second terminal is a group member, and the second terminal is one or more. The method is a report of the third type of status information, including:

[0229] S901: A first terminal sends a first indication message to a second terminal, where the first indication message is used to instruct the first terminal to report first information. Specifically, the indication information in the first indication message includes an indication of the type of content to be reported and an indication of a measurement threshold. Fig. 7A Except for the difference in step S701, other indication information such as Fig. 7A The description of step S701 is not repeated here.

[0230] In this embodiment, the reported content type is the third type of status information, and the third type of status information is used to indicate whether the bit error rate of the channel resource exceeds the second threshold. Specifically, the second terminal counts the bit error rate of statistical data transmission on the measurement resource indicated by the first terminal. The measurement threshold configured by the first terminal, i.e., the second threshold, includes 1%, 5%, 10%, etc. In an optional implementation, the second terminal can use a default measurement threshold, such as 5%, without obtaining it from the first terminal.

[0231] S902, the first terminal and the second terminal measure the resource. Since the measurement of the bit error rate of the resource requires the transmission of service data on the resource, the bit error rate can only be obtained after a period of data transmission.

[0232] In an optional implementation manner, the indication of the reported content type of this embodiment may be performed by the first terminal in order to obtain better performance after other indications of the reported content type have been running for a period of time.

[0233] In an optional implementation manner, the first terminal sends an indication of the reporting content type of this embodiment to the second terminal in an initial stage, and the second terminal reports the first information to the first terminal after performing data transmission for a period of time.

[0234] and Fig. 7A Similar to the description of step S702 in , in an optional implementation manner, step S902 is before step S901, and the second terminal has performed data transmission for a period of time before receiving the first indication message sent by the first terminal, and the second terminal has obtained the bit error rate on the used resources. In this way, after receiving the first indication message, the second terminal directly reports the first information according to the indication information.

[0235] S903: The second terminal reports the first information to the first terminal. Fig. 7A Except for the difference in step S703, the rest of the contents are the same as Fig. 7A The description of step S703 in FIG. 1 is consistent with that in FIG. 1 and will not be repeated here. In this embodiment, the second terminal reports the measurement result of the specified resource to the first terminal. Fig. 9B As shown, assuming that the measurement resource set configured by the first terminal is S, including 5 measurement resources, where the bit error rates of resource 2 and resource 3 are lower than the bit error rate threshold, then the corresponding resources are set to 1; if the bit error rates of the remaining resources are not lower than the bit error rate threshold, then the corresponding resources are set to 0.

[0236] S904: The first terminal obtains available candidate resources. Specifically, the first terminal refers to the first information reported by the second terminal and combines its own measurement information to determine the available candidate resources. Fig. 7A The description of step S704 is consistent with that of step S704, and will not be repeated here.

[0237] S905: The first terminal determines a first resource set based on the candidate resources available in the group and the available resources sent by the group heads of other groups, wherein the resources in the first resource set are resources for sidelink communication. Fig. 7A The description of step S705 is consistent with that of step S705, and will not be repeated here.

[0238] S906: The first terminal sends a second indication message to the second terminal, where the second indication message is information indicating the first resource set. Fig. 7A The description of step S706 is consistent with that of step S706 in the above description and will not be repeated here.

[0239] S907: At least one of the first terminal and the second terminal uses resources in the first resource set to perform sidelink communication. Fig. 9A This step is not shown in FIG. Fig. 7A The description of step S707 is consistent with that of step S707, and will not be repeated here.

[0240] From the above-mentioned embodiments of the present application, it can be seen that in the Sidelink technology using the Group mechanism, after the group head obtains the interference and other information of the entire group, it can coordinate and provide reliable information input in a unified manner, solve the problems of large interference and insufficient resource utilization of edge terminal devices in the group, and improve the communication performance of the system. From the above-mentioned embodiments, it can be seen that the information reporting methods provided by the three embodiments each have their own advantages. Figure 7A-7E In the method for reporting the first type of status information, the first information reported by the group member device is relatively simple, so the group member device occupies relatively few resources when reporting the first information. Figure 8A-B In the second type of status information reporting method, the group member devices report the specific measurement values ​​of the resources, so that the group head can perform differentiated processing on different group member devices based on the specific measurement values. Figure 9A-9B In the third type of status information reporting method, the group head can determine the resources for the side link communication according to the actual bit error situation of the data transmission.

[0241] According to the above description, the group head can switch the first indication message according to different scenarios. For example, the group head first uses the first type of status information reporting method. After running for a period of time, the group head can use the third type of status information reporting method, so that the group head can obtain the bit error situation of the resources, and obtain the resources for the side link communication according to the bit error situation. In this way, the resources for the side link communication obtained by the decision are more accurate. In addition, when the bit error rate reaches the threshold, the indication of the first information reporting is switched to the second type of status information reporting method. In this way, more accurate measurement results reported by the group member devices can be obtained, and the group member devices can also be differentiated to improve the system efficiency of the entire group.

[0242] The following is a method for reporting information provided by an embodiment of the present application. The method is applied to a wireless communication system, wherein the wireless communication system includes a first terminal and a second terminal, wherein the first terminal is a group head of a first group. Fig.10 As shown, the method includes:

[0243] S1001, the second terminal sends a group joining application to the first terminal, and in response to the received application approval message sent by the group head, joins the first group to become a member of the first group. Specifically, after the second terminal detects the first group existing around, the second terminal can receive a first operation, that is, a user's choice, and join the first group, such as Figure 4B and4C The second terminal may also autonomously choose to join the first group, for example, the second terminal chooses to join the group that is closest to the group head of the group.

[0244] S1002, the second terminal reports first information to the first terminal, where the first information is information for assisting the first terminal in selecting a first resource set, wherein the resources in the first resource set are resources for sidelink communication.

[0245] In an optional implementation, after the second terminal joins the first group and becomes a member of the first group, the second terminal reports the first information to the first terminal according to a reporting type of the first information supported by default.

[0246] In an optional implementation, after the first terminal detects that a new first group member is added, the first terminal sends a first indication message to the first group member, and the first group member reports the first information to the first terminal according to the first indication message. Figure 7A-7E The description of step S701 in is consistent and will not be repeated here.

[0247] S1003: The second terminal receives a second indication message sent by the first terminal, where the second indication message is information indicating the first resource set. Figure 7A-7E The steps S704-S706 described in are consistent and will not be repeated here.

[0248] In an optional implementation, all terminals support the reporting of a certain type of first information by default, for example, support the reporting of the first type of status information by default, and after the terminal joins a group and becomes a group member device, it autonomously reports the first information to the group head according to a default period or according to the position change between the terminal and the group head. That is to say, the group member device does not need to wait for receiving the first indication message sent by the group head before reporting the first information to the group head.

[0249] refer to Fig.11 , which shows a method provided by an embodiment of the present application for a group head to trigger a group member to report first information, the method comprising:

[0250] S1101, the group head decides to carry out the first information reporting process.

[0251] In an optional implementation, the group head may manually set up the first information reporting process.

[0252] In an optional implementation, the group head detects the probability of current resource conflict, and when the probability of resource conflict reaches a threshold, switches to the first information reporting process.

[0253] In an optional implementation, when the group head is within the base station network range, the base station may configure the group head to enter the first information reporting process.

[0254] S1102: The group head sends a first indication message to a group member device, where the first indication message is used to instruct the group member device to report first information. Figures 7A-9B The description of the embodiments is consistent with that in the embodiment and will not be repeated here.

[0255] The group member device processes and Figures 7A-9B The description of the embodiments is consistent with that in the embodiment and will not be repeated here.

[0256] A method for sending information provided by an embodiment of the present application is provided below, which is applied to a wireless communication system, wherein the wireless communication system includes a first terminal, a second terminal, and a third terminal, wherein the first terminal and the second terminal belong to the same communication group, the first terminal is a group head, and the second terminal is a group member, such as Fig.12 As shown, the method includes:

[0257] S1201. A first terminal sends a first indication message to a second terminal, where the first indication message is used to instruct the second terminal to report first information, and the first indication information includes an indication of a set of resources to be measured.

[0258] S1202: The second terminal reports first information to the first terminal according to the first indication message, where the first information includes interference information of the third terminal on the measurement resources in the set of resources to be measured.

[0259] S1203, the first terminal sends a second indication message to the second terminal, wherein the second indication message is information indicating a first resource set, wherein the resources in the first resource set are resources for sidelink communication, and the first resource set does not include resources whose interference with the resource set to be measured by the third terminal meets preset conditions.

[0260] In an optional implementation manner, the first resource set does not include resources for which interference information of the third terminal to the measurement resources in the resource set to be measured reaches an interference threshold.

[0261] In an optional implementation manner, the first resource set does not include resources whose interference information of the third terminal, the second terminal, and the first terminal to the measured resources in the resource set to be measured reaches an interference threshold.

[0262] S1204: At least one of the first terminal and the second terminal uses resources in the first resource set to perform sidelink communication.

[0263] It should be noted that Fig.12 The given method of information sending may be implemented in combination with any one of the embodiments given in this application.

[0264] The embodiments of the present application provided above may also be applied to technologies of other communication systems, such as wireless communication systems such as WIFI, Zigbee, Bluetooth, and NFC (Near Field Communication).

[0265] Please refer to Fig.13 , which shows an information sending device provided in an embodiment of the present application, which can implement part or all of the terminal in the embodiment of the present application through software, hardware or a combination of both. The device includes: a configuration sending unit 1301, a configuration receiving unit 1302, a measurement unit 1303, an auxiliary information reporting unit 1304, an available resource decision unit 1305 and an available resource configuration unit 1306.

[0266] The sending unit 1301 is configured to send a first indication message to group member devices when the apparatus acts as a group head.

[0267] The receiving unit 1302 is configured to receive a first indication message sent by a group head when the apparatus serves as a group member device.

[0268] The measuring unit 1303 is configured to measure resources when the apparatus serves as a group member device or a group head.

[0269] The auxiliary information reporting unit 1304 is used to generate first information when the apparatus serves as a group member device, and report the first information to the group head.

[0270] The available resource decision unit 1305 is used to decide the resources for the sidelink communication according to the first information reported by the group member devices and in combination with its own measurement information when the device acts as a group head.

[0271] The available resource configuration unit 1306 is used to configure the resources of the side link communication to the group member devices when the apparatus acts as a group head.

[0272] Please refer to Fig.14, which shows a schematic diagram of the structure of a terminal provided in an embodiment of the present application, the terminal includes: a processor 1401, a receiver 1402, a transmitter 1403, a memory 1404 and a bus 1405. The processor 1401 includes one or more processing cores, and the processor 1401 executes various functional applications and information processing by running software programs and modules. The receiver 1402 and the transmitter 1403 can be implemented as a communication component, and the communication component can be a baseband chip. The memory 1404 is connected to the processor 1401 via a bus 1405. The memory 1404 can be used to store at least one program instruction, and the processor 1401 is used to execute at least one program instruction to implement the technical solution of the above embodiment. Its implementation principle and technical effect are similar to those of the above method related embodiments, and will not be repeated here.

[0273] When the terminal is turned on, the processor can read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent through the antenna (for example, random access preamble), the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the control circuit in the control circuit. The control circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal outward through the antenna in the form of electromagnetic waves. When data is sent to the terminal, the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.

[0274] Please refer to Fig.15 , which shows a schematic diagram of the structure of a vehicle system provided by an embodiment of the present application, which is applied in a vehicle, or the embodiment of the present application can also be applied to a large-scale smart factory or unmanned aerial vehicle equipment, etc. The vehicle system includes: a processor 1501, a receiver 1502, a transmitter 1503, a memory 1504 and a bus 1505. The processor 1501 executes various functional applications and information processing by running software programs and modules. The receiver 1502 and the transmitter 1503 can be implemented as a communication component, which can be a baseband chip. The memory 1504 is connected to the processor 1501 via a bus 1505. The memory 1504 can be used to store at least one program instruction, and the processor 1501 is used to execute at least one program instruction to implement the technical solution of the above embodiment. Its implementation principle and technical effect are similar to those of the above method related embodiments, and will not be repeated here.

[0275] Please refer to Fig.16, which shows a schematic diagram of the structure of a roadside device provided by an embodiment of the present application, which is used in the intelligent vehicle network, and the roadside device includes: a processor 1601, a receiver 1602, a transmitter 1603, a memory 1604 and a bus 1605. The processor 1601 executes various functional applications and information processing by running software programs and modules. The receiver 1602 and the transmitter 1603 can be implemented as a communication component, which can be a baseband chip. The memory 1604 is connected to the processor 1601 via a bus 1605. The memory 1604 can be used to store at least one program instruction, and the processor 1601 is used to execute at least one program instruction to implement the technical solution of the above embodiment. Its implementation principle and technical effect are similar to those of the above method related embodiments, and will not be repeated here.

[0276] Those skilled in the art will appreciate that for ease of description, Figure 14-16 Only one memory and processor are shown. In an actual terminal, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiments of the present application.

[0277] As an optional implementation, the processor may include a baseband processor and a central processing unit, the baseband processor is mainly used to process communication data, and the central processing unit is mainly used to execute software programs and process data of software programs. It can be understood by those skilled in the art that the baseband processor and the central processing unit can be integrated into one processor, or they can be independent processors, interconnected by technologies such as buses. It can be understood by those skilled in the art that the terminal can include multiple baseband processors to adapt to different network formats, the terminal can include multiple central processing units to enhance its processing capabilities, and the various components of the terminal can be connected through various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. The central processing unit can also be described as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data can be built into the processor, or it can be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function. The memory can be integrated in the processor or can be independent of the processor. The memory includes a cache Cache, which can store frequently accessed data / instructions.

[0278] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0279] In the embodiments of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SS), or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0280] The memory in the embodiment of the present application can also be a circuit or any other device capable of realizing a storage function, for storing program instructions and / or data. In the methods provided in the embodiments of the present application, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital video disc (DWD), or a semiconductor medium (e.g., an SSD), etc.

[0281] The embodiment of the present application provides a computer program product, when the computer program product is run on a terminal, the terminal executes the technical solution in the above embodiment. Its implementation principle and technical effect are similar to those of the above related embodiments, and will not be repeated here.

[0282] The embodiment of the present application provides a computer-readable storage medium on which program instructions are stored. When the program instructions are executed by a terminal, the terminal executes the technical solution of the above-mentioned embodiment. Its implementation principle and technical effect are similar to those of the above-mentioned related embodiments, and will not be repeated here. In summary, the above embodiments are only used to illustrate the technical solution of the present application, rather than to limit it; although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical solutions recorded in the above-mentioned embodiments, or to replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for sending information, characterized in that: Applied to a wireless communication system, the wireless communication system includes a first terminal and a second terminal, the second terminal is one or more, and the method includes: The first terminal sends a first indication message to the second terminal, wherein the first indication message is used to instruct the second terminal to report first information; The second terminal reports the first information to the first terminal according to the first indication message, wherein the first information is used to indicate channel state information of a channel resource; The first terminal sends a second indication message to the second terminal, wherein the second indication message is used to indicate information of a first resource set, and the first resource set is determined by the first terminal with reference to the first information, wherein the resources in the first resource set are resources for sidelink communication.

2. The method according to claim 1, characterized in that The method further comprises: At least one of the first terminal and the second terminal uses resources in the first resource set for sidelink communication.

3. The method according to claim 1 or 2, characterized in that: The channel state information of the channel resource is first type of state information, and the first type of state information is used to indicate whether the channel quality of the channel resource meets a first threshold, or, The channel state information of the channel resource is second-type state information, and the second-type state information is channel quality of the channel resource, or, The channel state information of the channel resource is third-type state information, and the third-type state information is used to indicate whether a bit error rate of the channel resource meets a second threshold; The channel quality includes reference signal received power RSRP or signal to interference plus noise ratio SINR or reference signal received quality RSRQ.

4. The method according to claim 3, characterized in that The first indication message includes an indication of a reporting content type, where the reporting content type is one or more of the first category status information, the second category status information, or the third category status information.

5. The method according to claim 4, characterized in that The first resource set is determined by the first terminal with reference to the first information, and includes: The first terminal determines a second resource set according to second information, where the second information is a set obtained by measurement by the first terminal, the second resource set is determined by the first terminal from a fourth resource set, a proportion of resources in the fourth resource set that meet a measurement threshold in the second terminal is greater than or equal to a first proportion, or a proportion of resources in the fourth resource set that meet the measurement threshold in the first terminal and the second terminal is greater than or equal to the first proportion, or the fourth resource set is a set obtained by measurement by the first terminal; The first terminal determines a third resource set according to the first information and the second information, wherein the number of resources in the third resource set is a third number, and the first resource set includes the second resource set and the third resource set.

6. The method according to claim 5, characterized in that When the reported content type is the first type of status information or the second type of status information, the first information is a resource set measured by the second terminal, and the third resource set is determined by the first terminal according to a random principle or a traffic priority principle.

7. The method according to claim 5, characterized in that When the reporting content type is the third type of state information, the first information is an interference set measured by the second terminal, and the method for the first terminal to determine the third resource set includes at least one of the following: The first terminal arranges the interference set measured by the second terminal in descending order according to the traffic of the second terminal, and selects resources with the least interference from the interference set in sequence according to the arrangement order to add to the third resource set; or, The first terminal calculates, according to the interference set measured by the second terminal, an average interference value of resources, and selects the third number of resources with the smallest average interference value of the resources to add to the third resource set; or, The first terminal converts the interference value of the resource into spectrum efficiency based on the interference set measured by the second terminal, calculates the transmission duration of the resource in combination with the service volume of the second terminal, and selects the third number of resources with the smallest transmission duration to add to the third resource set.

8. The method according to claim 1, characterized in that The first indication message includes an indication of a set of resources to be measured, where the set of resources to be measured is used to indicate a location of a channel resource measured by the second terminal.

9. The method according to claim 8, characterized in that The wireless communication system further includes a third terminal, the third terminal belongs to another group, and the first information includes information on interference of the third terminal on the resources to be measured in the set of resources to be measured.

10. The method according to claim 1, characterized in that The first indication message includes an indication of a first information sending mechanism, where the first information sending mechanism includes first information reporting based on freely selected resources or first information reporting based on reserved resources.

11. The method according to claim 1, characterized in that: The first indication message includes an indication of a reporting opportunity, and the reporting opportunity includes periodic reporting or non-periodic reporting.

12. The method according to claim 1, characterized in that The first terminal sending a first indication message to the second terminal includes: The first terminal measures the distance between itself and the second terminal, and when the distance change reaches a first distance threshold, the first terminal sends the first indication message to the second terminal.

13. The method according to claim 1, characterized in that The second terminal receives the first indication message and reports first information to the first terminal, including: The second terminal receives the first indication message, and reports the first information to the first terminal via a radio resource control RRC message, a media control unit MCE message, or a side link control indication SCI message.

14. The method according to claim 1, characterized in that The first resource set is determined by the first terminal with reference to the first information, and includes: The first resource set is determined by the first terminal with reference to the received first information and the available resource status sent by the fourth terminal, wherein the fourth terminal is the group head of other groups, or, The first resource set is directly determined by the first terminal with reference to the received first information.

15. The method according to claim 1, characterized in that The first terminal sending a second indication message to the second terminal includes: The first terminal sends the second indication message to the second terminal by including a radio resource control RRC message or a media control unit MCE message or a sidelink control indication SCI message.

16. A method for sending information, characterized in that: Applied to a first terminal, the first terminal is included in a wireless communication system, and the wireless communication system also includes one or more second terminals. The method includes: The first terminal sends a first indication message to the second terminal, where the first indication message is used to instruct the second terminal to report first information; The first terminal receives the first information reported by the second terminal, wherein the first information is used to indicate channel state information of a channel resource; The first terminal sends a second indication message to the second terminal, wherein the second indication message is used to indicate information of a first resource set, and the first resource set is determined by the first terminal with reference to the first information, wherein the resources in the first resource set are resources for sidelink communication.

17. The method according to claim 16, characterized in that The channel state information of the channel resource is first type of state information, and the first type of state information is used to indicate whether the channel quality of the channel resource meets a first threshold, or, The channel state information of the channel resource is second-type state information, and the second-type state information is channel quality of the channel resource, or, The channel state information of the channel resource is the third type of state information, and the third type of state information is used to indicate whether the bit error rate of the channel resource is within the second threshold; The channel quality includes reference signal received power RSRP or signal to interference plus noise ratio SINR or reference signal received quality RSRQ.

18. The method according to claim 17, characterized in that The first indication message includes an indication of a reporting content type, where the reporting content type is one or more of the first category status information, the second category status information, or the third category status information.

19. The method according to claim 18, characterized in that The first resource set is determined by the first terminal with reference to the first information, including: The first terminal determines a second resource set according to second information, where the second information is a set obtained by measurement by the first terminal, the second resource set is determined by the first terminal from a fourth resource set, a proportion of resources in the fourth resource set that meet a measurement threshold in the second terminal is greater than or equal to a first proportion, or a proportion of resources in the fourth resource set that meet the measurement threshold in the first terminal and the second terminal is greater than or equal to the first proportion, or the fourth resource set is a set obtained by measurement by the first terminal; The first terminal determines a third resource set according to the first information and the second information, wherein the number of resources in the third resource set is a third number, and the first resource set includes the second resource set and the third resource set.

20. The method according to claim 19, characterized in that When the reported content type is the first type of status information or the second type of status information, the first information is a resource set measured by the second terminal, and the third resource set is determined by the first terminal according to a random principle or a traffic priority principle.

21. The method according to claim 19, characterized in that When the reporting content type is the third type of state information, the first information is an interference set measured by the second terminal, and the method for the first terminal to determine the third resource set includes at least one of the following: The first terminal arranges the interference set measured by the second terminal in descending order according to the traffic of the second terminal, and selects resources with the least interference from the interference set in sequence according to the arrangement order to add to the third resource set; or, The first terminal calculates, according to the interference set measured by the second terminal, an average interference value of resources, and selects the third number of resources with the smallest average interference value of the resources to add to the third resource set; or, The first terminal converts the interference value of the resource into spectrum efficiency based on the interference set measured by the second terminal, calculates the transmission duration of the resource in combination with the service volume of the second terminal, and selects the third number of resources with the smallest transmission duration to add to the third resource set.

22. The method according to any one of claims 16 to 21, characterized in that The first indication message includes an indication of a set of resources to be measured, where the set of resources to be measured is used to indicate a location of a channel resource measured by the second terminal.

23. The method according to claim 22, characterized in that The wireless communication system further includes a third terminal, the third terminal belongs to another group, and the first information includes information on interference of the third terminal on the resources to be measured in the set of resources to be measured.

24. The method according to claim 16, characterized in that The first indication message includes an indication of a first information sending mechanism, where the first information sending mechanism includes first information reporting based on freely selected resources or first information reporting based on reserved resources.

25. The method according to claim 16, characterized in that The first indication message includes an indication of a reporting opportunity, and the reporting opportunity includes periodic reporting or non-periodic reporting.

26. The method according to claim 16, characterized in that The first terminal sending a first indication message to the second terminal includes: The first terminal measures the distance between itself and the second terminal, and when the distance change reaches a first distance threshold, the first terminal sends the first indication message to the second terminal.

27. The method according to claim 16, characterized in that The first resource set is determined by the first terminal with reference to the first information, including: The first resource set is determined by the first terminal with reference to the received first information and the available resource status sent by the fourth terminal, wherein the fourth terminal is the group head of other groups, or, The first resource set is directly determined by the first terminal with reference to the received first information.

28. The method according to claim 16, characterized in that The first terminal sending a second indication message to the second terminal includes: The first terminal sends the second indication message to the second terminal by including a radio resource control RRC message or a media control unit MCE message or a sidelink control indication SCI message.

29. A method for sending information, characterized in that: Applied to a wireless communication system, the wireless communication system includes a first terminal and a second terminal, the second terminal is one or more, and the method includes: The second terminal sends a group joining application to the first terminal, and in response to a received application approval message sent by the first terminal, joins the first group to become a member of the first group; The second terminal reports first information to the first terminal, where the first information is used to indicate channel state information of a channel resource; The second terminal receives a second indication message sent by the first terminal, where the second indication message is used to indicate information of a first resource set, where the first resource set is determined by the first terminal with reference to the first information, wherein the resources in the first resource set are resources for sidelink communication.

30. The method according to claim 29, characterized in that The method further comprises: The second terminal uses the resources in the first resource set to perform sidelink communication.

31. The method according to claim 29 or 30, characterized in that The second terminal joins the first group to become a first group member, including: The second terminal detects the first group, receives a first operation to join the first group and becomes a member of the first group, wherein the first operation includes user selection, or The second terminal detects the first group and autonomously chooses to join the first group to become a member of the first group.

32. The method according to claim 29, characterized in that Before the second terminal reports the first information to the first terminal, the method further includes: The second terminal receives a first indication message from the first terminal, where the first indication message is used to instruct the first terminal to report the first information.

33. The method according to claim 32, characterized in that The channel state information of the channel resource is first type of state information, and the first type of state information is used to indicate whether the channel quality of the channel resource meets a first threshold, or, The channel state information of the channel resource is second-type state information, and the second-type state information is channel quality of the channel resource, or, The channel state information of the channel resource is the third type of state information, and the third type of state information is used to indicate whether the bit error rate of the channel resource is within the second threshold. The channel quality includes reference signal received power RSRP or signal to interference plus noise ratio SINR or reference signal received quality RSRQ.

34. The method according to claim 33, characterized in that The first indication message includes an indication of a reporting content type, where the reporting content type is one or more of the first category status information, the second category status information, or the third category status information.

35. The method according to claim 34, characterized in that The first resource set is determined by the first terminal with reference to the first information, and includes: The first terminal determines a second resource set according to second information, where the second information is a set obtained by measurement by the first terminal, the second resource set is determined by the first terminal from a fourth resource set, a proportion of resources in the fourth resource set that meet a measurement threshold in the second terminal is greater than or equal to a first proportion, or a proportion of resources in the fourth resource set that meet the measurement threshold in the first terminal and the second terminal is greater than or equal to the first proportion, or the fourth resource set is a set obtained by measurement by the first terminal; The first terminal determines a third resource set according to the first information and the second information, wherein the number of resources in the third resource set is a third number, and the first resource set includes the second resource set and the third resource set.

36. The method according to claim 35, characterized in that When the reported content type is the first type of status information or the second type of status information, the first information is a resource set measured by the second terminal, and the third resource set is determined by the first terminal according to a random principle or a traffic priority principle.

37. The method according to claim 35, characterized in that When the reporting content type is the third type of state information, the first information is an interference set measured by the second terminal, and the method for the first terminal to determine the third resource set includes at least one of the following: The first terminal arranges the interference set measured by the second terminal in descending order according to the traffic of the second terminal, and selects resources with the least interference from the interference set in sequence according to the arrangement order to add to the third resource set; or, The first terminal calculates, according to the interference set measured by the second terminal, an average interference value of resources, and selects the third number of resources with the smallest average interference value of the resources to add to the third resource set; or, The first terminal converts the interference value of the resource into spectrum efficiency based on the interference set measured by the second terminal, calculates the transmission duration of the resource in combination with the service volume of the second terminal, and selects the third number of resources with the smallest transmission duration to add to the third resource set.

38. The method according to any one of claims 32 to 37, characterized in that The first indication message includes an indication of a set of resources to be measured, where the set of resources to be measured is used to indicate a location of a channel resource measured by the second terminal.

39. The method according to claim 38, characterized in that The wireless communication system further includes a third terminal, the third terminal belongs to another group, and the first information includes information on interference of the third terminal on the resources to be measured in the set of resources to be measured.

40. The method according to claim 32 or 34, characterized in that The first indication message includes an indication of a first information sending mechanism, where the first information sending mechanism is first information reporting based on freely selected resources or first information reporting based on reserved resources.

41. The method according to claim 32 or 34, characterized in that The first indication message includes an indication of a reporting opportunity, and the reporting opportunity includes periodic reporting or non-periodic reporting.

42. The method according to claim 29, characterized in that The second terminal reporting the first information to the first terminal includes: The second terminal measures the distance between itself and the first terminal, and when the distance change reaches a second distance threshold, the second terminal non-periodically reports first information to the first terminal.

43. The method according to claim 29, characterized in that The second terminal reporting the first information to the first terminal includes: The second terminal reports the first information to the first terminal via a radio resource control RRC message, a media control unit MCE message, or a sidelink control indication SCI message.

44. A method for sending information, characterized in that: Applied to a wireless communication system, the wireless communication system includes a first terminal, a second terminal and a third terminal, the first terminal and the second terminal belong to the same communication group, the first terminal is a group head, and the second terminal is a group member, the method includes: The first terminal sends a first indication message to the second terminal, where the first indication message is used to instruct the second terminal to report first information, and the first indication message includes an indication of a resource set to be measured; The second terminal reports the first information to the first terminal according to the first indication message, where the first information includes interference information of the third terminal to the resources to be measured in the set of resources to be measured; The first terminal sends a second indication message to the second terminal, wherein the second indication message is used to indicate information of a first resource set, wherein the resources in the first resource set are resources for sidelink communication, and the resources in the first resource set do not include resources whose interference with the resource set to be measured by the third terminal meets a preset condition.

45. The method according to claim 44, characterized in that The method further comprises: At least one of the first terminal and the second terminal uses resources in the first resource set for sidelink communication.

46. ​​The method according to claim 44 or 45, characterized in that The third terminal does not belong to the communication group where the first terminal and the second terminal belong.

47. The method according to claim 44, characterized in that The resources of the first resource set do not include resources whose interference to the resource set to be measured by the third terminal meets a preset condition, including: the resources in the first resource set do not include resources whose interference information of the third terminal to the resources to be measured in the resource set to be measured reaches an interference threshold, or the resources in the first resource set do not include resources whose interference information of the third terminal, the second terminal and the first terminal to the resources to be measured in the resource set to be measured reaches the interference threshold.

48. A communication device, characterized in that: The communication device comprises a processor, wherein the processor is coupled to a memory, and reads instructions in the memory and enables the communication device to execute the method according to any one of claims 1 to 15 according to the instructions.

49. The communication device according to claim 48, characterized in that The communication device is a terminal or a chip.

50. A computer program product comprising instructions, characterized in that When the instruction is executed on a terminal, the terminal is caused to execute the method according to any one of claims 1 to 15.

51. A computer-readable storage medium storing instructions, characterized in that: When the instruction is executed on a terminal, the terminal is caused to execute the method according to any one of claims 1 to 15.

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