Information transmission method, device and terminal

Abstract

The present invention provides an information transmission method, device and terminal to solve the problem in the prior art that a terminal cannot perceive the resource occupancy of other terminals in the same resource pool, thereby causing resource selection conflicts. The information transmission method of the present invention: obtains resource occupancy information in a resource pool; according to the resource occupancy information, sends resource indication information, the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent via a control channel and / or a data channel. The terminal of the present invention that subsequently communicates with the first terminal through a direct link can use the resource indication information as a reference to avoid resource selection conflicts caused by hidden nodes, thereby improving system reliability and resource utilization.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to an information transmission method, device and terminal. Background Art

[0002] In the V2X (Vehicle-to-Everything) direct link communication system, such as Figure 1 As shown in the figure, the transmitting terminals Tx UE1 and Tx UE2 can establish direct links with the receiving terminal Rx UE for communication respectively, but due to the limitation of communication distance, Tx UE1 and Tx UE2 cannot perceive each other's existence, nor can they know each other's resource occupancy. When Tx UE1 and Tx UE2 use the same resource pool to communicate with Rx UE through direct links, it is easy to select the same resources to cause conflicts. Summary of the invention

[0003] The object of the present invention is to provide an information transmission method, device and terminal, so as to solve the problem in the prior art that a terminal cannot perceive the resource occupancy of other terminals in the same resource pool, thereby causing resource selection conflicts.

[0004] In order to achieve the above object, an embodiment of the present invention provides an information transmission method, which is applied to a first terminal and includes:

[0005] Get resource occupancy information in the resource pool;

[0006] According to the resource occupancy information, resource indication information is sent, the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and / or a data channel.

[0007] The control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or,

[0008] The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or,

[0009] The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or,

[0010] The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

[0011] The control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or,

[0012] The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

[0013] The resource indication information includes at least one of the following:

[0014] a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information;

[0015] a second indication field, where the second indication field is used to indicate a time domain position of the first resource information;

[0016] A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

[0017] The frequency domain position includes at least two of the starting point index number of the frequency domain subchannel, the number of continuous frequency domain subchannels, and the ending point index number of the frequency domain subchannel; or,

[0018] The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

[0019] The time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or,

[0020] The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

[0021] Wherein, sending resource indication information according to the resource occupation information:

[0022] Determining a target indication mode of resource indication information according to the resource occupation information;

[0023] Send resource indication information according to the target indication method; wherein the target indication method includes one of the following methods:

[0024] Method 1: The first resource information is available resource information;

[0025] Method 2: The second resource information is unavailable resource information.

[0026] The step of determining the target indication mode of the resource indication information according to the resource occupation information includes:

[0027] When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, determining that the target indication mode is the second mode;

[0028] When it is determined, based on the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, the target indication mode is determined to be mode one.

[0029] Wherein, the method further comprises:

[0030] Send a second RRC signaling, where the second RRC signaling carries resource indication information corresponding to method one or method two.

[0031] Wherein, the method further comprises:

[0032] Send a third RRC signaling, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2;

[0033] A third SCI is sent, where the third SCI carries a fourth indication field, where the fourth indication field is used to indicate mode one or mode two.

[0034] The sending of resource indication information includes:

[0035] The resource indication information is sent using at least one of the following transmission modes:

[0036] Broadcasting method;

[0037] Unicast mode;

[0038] Multicast mode.

[0039] In order to achieve the above object, an embodiment of the present invention further provides an information transmission method, which is applied to a second terminal and includes:

[0040] Receive resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, where the first terminal communicates with the second terminal via a direct link, and where the resource indication information is received via a control channel and / or a data channel.

[0041] After receiving the resource indication information sent by the first terminal, the method further includes:

[0042] Obtaining a first candidate resource set according to the resource indication information;

[0043] According to its own resource perception results, resources are excluded to obtain the second candidate resource set;

[0044] Determine a final candidate resource set according to the first candidate resource set and the second candidate resource set;

[0045] According to the final candidate resource set, a sending resource is selected for the service packet to be sent.

[0046] The determining of a final candidate resource set according to the first candidate resource set and the second candidate resource set includes:

[0047] determining a combination of the first candidate resource set and the second candidate resource set as a final candidate resource set; or,

[0048] determining the intersection of the first candidate resource set and the second candidate resource set as the final candidate resource set; or,

[0049] When the intersection of the first candidate resource set and the second candidate resource set is an empty set, or when the intersection of the first candidate resource set and the second candidate resource set does not reach the upper limit of the minimum candidate resource set, the target candidate resource set is determined as the final candidate resource set, and the target candidate resource set is one of the first candidate resource set, the set of the first candidate resource set and the second candidate resource set, and the second candidate resource set.

[0050] Wherein, the method further comprises:

[0051] According to its own resource perception results, it excludes resources and obtains the third candidate resource set;

[0052] According to the third candidate resource set, a sending resource is selected for the service packet to be sent.

[0053] The control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or,

[0054] The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or,

[0055] The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or,

[0056] The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

[0057] The control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or,

[0058] The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

[0059] The resource indication information includes at least one of the following:

[0060] a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information;

[0061] a second indication field, where the second indication field is used to indicate a time domain position of the first resource information;

[0062] A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

[0063] The frequency domain position includes at least two of the starting point index number of the frequency domain subchannel, the number of continuous frequency domain subchannels, and the ending point index number of the frequency domain subchannel; or,

[0064] The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

[0065] The time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or,

[0066] The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

[0067] Wherein, the method further comprises:

[0068] A second RRC signaling sent by the first terminal is received, where the second RRC signaling carries resource indication information corresponding to method one or method two.

[0069] Wherein, the method further comprises:

[0070] Receive a third RRC signaling sent by the first terminal, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2;

[0071] A third SCI sent by the first terminal is received, where the third SCI carries a fourth indication field, and the fourth indication field is used to indicate mode one or mode two.

[0072] Wherein, the method 1 is used to indicate that the first resource information is available resource information;

[0073] The second method is used to indicate that the first resource information is unavailable resource information.

[0074] In order to achieve the above object, an embodiment of the present invention further provides a terminal, which is a first terminal and includes a memory, a transceiver, and a processor:

[0075] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0076] Get resource occupancy information in the resource pool;

[0077] According to the resource occupancy information, resource indication information is sent through a transceiver, the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and / or a data channel.

[0078] The control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or,

[0079] The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or,

[0080] The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or,

[0081] The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

[0082] The control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or,

[0083] The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

[0084] The resource indication information includes at least one of the following:

[0085] a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information;

[0086] a second indication field, where the second indication field is used to indicate a time domain position of the first resource information;

[0087] A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

[0088] The frequency domain position includes at least two of the starting point index number of the frequency domain subchannel, the number of continuous frequency domain subchannels, and the ending point index number of the frequency domain subchannel; or,

[0089] The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

[0090] The time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or,

[0091] The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

[0092] Wherein, the processor is further used for:

[0093] Determining a target indication mode of resource indication information according to the resource occupation information;

[0094] According to the target indication method, the resource indication information is sent by the transceiver; wherein the target indication method includes one of the following methods:

[0095] Method 1: The first resource information is available resource information;

[0096] Method 2: The second resource information is unavailable resource information.

[0097] Wherein, the processor is further used for:

[0098] When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, determining that the target indication mode is the second mode;

[0099] When it is determined, based on the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, the target indication mode is determined to be mode one.

[0100] Wherein, the transceiver is also used for:

[0101] Send a second RRC signaling, where the second RRC signaling carries resource indication information corresponding to method one or method two.

[0102] Wherein, the transceiver is also used for:

[0103] Send a third RRC signaling, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2;

[0104] A third SCI is sent, where the third SCI carries a fourth indication field, where the fourth indication field is used to indicate mode one or mode two.

[0105] Wherein, the transceiver is also used for:

[0106] The resource indication information is sent using at least one of the following transmission modes:

[0107] Broadcasting method;

[0108] Unicast mode;

[0109] Multicast mode.

[0110] In order to achieve the above object, an embodiment of the present invention further provides an information transmission device, including:

[0111] An acquisition module is used to obtain resource occupancy information in a resource pool;

[0112] The first sending module is used to send resource indication information according to the resource occupancy information, the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and / or a data channel.

[0113] In order to achieve the above-mentioned purpose, an embodiment of the present invention further provides a processor-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the information transmission method as described above are implemented.

[0114] In order to achieve the above object, an embodiment of the present invention further provides a terminal, which is a second terminal and includes a memory, a transceiver, and a processor:

[0115] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0116] Receive resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, where the first terminal communicates with the second terminal via a direct link, and where the resource indication information is received via a control channel and / or a data channel.

[0117] Wherein, the processor is further used for:

[0118] Obtaining a first candidate resource set according to the resource indication information;

[0119] According to its own resource perception results, resources are excluded to obtain the second candidate resource set;

[0120] Determine a final candidate resource set according to the first candidate resource set and the second candidate resource set;

[0121] According to the final candidate resource set, a sending resource is selected for the service packet to be sent.

[0122] Wherein, the processor is further used for:

[0123] determining a combination of the first candidate resource set and the second candidate resource set as a final candidate resource set; or,

[0124] determining the intersection of the first candidate resource set and the second candidate resource set as the final candidate resource set; or,

[0125] When the intersection of the first candidate resource set and the second candidate resource set is an empty set, or when the intersection of the first candidate resource set and the second candidate resource set does not reach the upper limit of the minimum candidate resource set, the target candidate resource set is determined as the final candidate resource set, and the target candidate resource set is one of the first candidate resource set, the set of the first candidate resource set and the second candidate resource set, and the second candidate resource set.

[0126] Wherein, the processor is further used for:

[0127] According to its own resource perception results, it excludes resources and obtains the third candidate resource set;

[0128] According to the third candidate resource set, a sending resource is selected for the service packet to be sent.

[0129] The control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or,

[0130] The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or,

[0131] The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or,

[0132] The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

[0133] The control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or,

[0134] The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

[0135] The resource indication information includes at least one of the following:

[0136] a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information;

[0137] a second indication field, where the second indication field is used to indicate a time domain position of the first resource information;

[0138] A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

[0139] The frequency domain position includes at least two of the starting point index number of the frequency domain subchannel, the number of continuous frequency domain subchannels, and the ending point index number of the frequency domain subchannel; or,

[0140] The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

[0141] The time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or,

[0142] The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

[0143] Wherein, the transceiver is also used for:

[0144] A second RRC signaling sent by the first terminal is received, where the second RRC signaling carries resource indication information corresponding to method one or method two.

[0145] Wherein, the transceiver is also used for:

[0146] Receive a third RRC signaling sent by the first terminal, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2;

[0147] A third SCI sent by the first terminal is received, where the third SCI carries a fourth indication field, and the fourth indication field is used to indicate mode one or mode two.

[0148] Wherein, the method 1 is used to indicate that the first resource information is available resource information;

[0149] The second method is used to indicate that the first resource information is unavailable resource information.

[0150] In order to achieve the above object, an embodiment of the present invention further provides an information transmission device, including:

[0151] The first receiving module is used to receive resource indication information sent by the first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, and the first terminal communicates with the second terminal via a direct link, and the resource indication information is received via a control channel and / or a data channel.

[0152] In order to achieve the above-mentioned purpose, an embodiment of the present invention further provides a processor-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the information transmission method as described above are implemented.

[0153] The above technical solution of the present invention has at least the following beneficial effects:

[0154] In the above-mentioned technical scheme of the embodiment of the present invention, resource occupancy information in the resource pool is obtained; according to the resource occupancy information, resource indication information is sent, and the resource indication information is used to indicate first resource information, and the first resource information is available resource information or unavailable resource information. The resource indication information is sent through a control channel and / or a data channel. In this way, the terminal that subsequently communicates with the first terminal in a direct link can use the resource indication information as a reference to avoid resource selection conflicts caused by hidden nodes, thereby improving system reliability and resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0155] Figure 1 A schematic diagram of a scenario of direct link communication between existing terminals;

[0156] Figure 2This is a flow chart of an information transmission method according to an embodiment of the present invention;

[0157] Figure 3 A schematic diagram of a resource location indicated by resource indication information in a first indication mode according to an embodiment of the present invention;

[0158] Figure 4 A schematic diagram of resource locations indicated by resource indication information in the second indication mode according to an embodiment of the present invention;

[0159] Figure 5 The second flowchart of the information transmission method according to the embodiment of the present invention;

[0160] Figure 6 This is one of the structural block diagrams of a terminal according to an embodiment of the present invention;

[0161] Figure 7 This is one of the module schematic diagrams of the information transmission device according to an embodiment of the present invention;

[0162] Figure 8 This is a second structural block diagram of a terminal according to an embodiment of the present invention;

[0163] Fig. 9 This is the second module schematic diagram of the information transmission device according to the embodiment of the present invention. DETAILED DESCRIPTION

[0164] In the embodiments of the present invention, the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0165] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0166] The embodiments of the present application provide an information transmission method, device and terminal, which are used to solve the problem that a terminal cannot perceive the resource occupancy of other terminals in the same resource pool, thereby causing resource selection conflicts.

[0167] Among them, the method and the device are based on the same application concept. Since the method and the device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0168] Before describing the embodiments of the present application in detail, the Mode 2 resource allocation process in the NR-V2X direct link communication system is briefly introduced.

[0169] 1) Resource perception: Resource perception refers to the terminal judging whether the resource is used by other terminals based on the RSRP (Reference Signal Received Power) strength of the signal received on a certain resource. In the resource perception process, it is necessary to consider the different characteristics of periodic services and non-periodic services in the hybrid service scenarios in NR V2X applications, as well as the impact of service types on resource perception results. At the same time, it is also necessary to perform appropriate resource perception configuration based on the time-frequency resource granularity in the physical channel, resource pool settings and other information. The resource perception window refers to the time window for the terminal to perform resource perception.

[0170] 2) Resource exclusion: The main purpose of resource exclusion is to exclude resources that are not available for resource selection within the resource selection window based on the perception results, such as excluding the time-frequency resources required for the terminal to receive data (NR V2X terminals send and receive data in half-duplex mode, and half-duplex means that the terminal cannot send and receive data at the same time), forming a set of candidate resources, reducing the probability of resource collision and improving reliability.

[0171] 3) Resource selection: The resource selection mechanism is to select appropriate transmission time and frequency resources for the service packet TB (Transport Block) to be sent from the candidate resource set. The resource selection needs to consider the service priority, latency, service packet size, and transmission reliability requirements. The resource selection window refers to the time window in which the terminal performs resource selection.

[0172] NR-V2X Mode 2 uses distributed resource scheduling. Since there is no unified scheduling by the base station, the UE (User Equipment) needs to determine the resource occupancy of other UEs through the resource perception mechanism and select resources based on the resource perception results. Compared with a completely random resource selection mechanism, the resource perception mechanism can improve resource utilization, reduce collision probability, and improve system performance.

[0173] When a service arrives, the terminal receives the data packet in the resource perception window and decodes the SCI (Sidelink Control Information). The resources that fall within the resource selection window and whose RSRP is greater than the RSRP threshold value need to be excluded. The remaining resources are candidate resources. Then, the resources required for direct link transmission are randomly selected from the 20% of candidate resources with the smallest RSSI (Received Signal Strength Indication) or directly selected from all candidate resources. The length of the resource selection window can be configured as the maximum period of the service.

[0174] In the process of implementing this application, the inventors found that in the existing NR V2X Mode 2 distributed resource scheduling system, when determining the candidate resource set, the terminal completely excludes resources based on its own perception of the resource pool, without reference to the resource pool information provided by other terminals. Due to limited communication distance, building obstruction and other reasons, the terminals cannot perceive the resource occupancy of other terminals in the same resource pool, resulting in resource selection conflicts, which not only reduces the reliability of the system, but also reduces the utilization of resources.

[0175] Based on this, Figure 2 As shown, an embodiment of the present invention provides an information transmission method, which is applied to a first terminal, and the method includes:

[0176] Step 201: Obtain resource occupancy information in a resource pool;

[0177] In this step, the resource pool may be a resource pool of a direct link.

[0178] Specifically, the first terminal may analyze the resource occupancy in the resource perception window through resource perception to obtain resource occupancy information in the resource pool, that is, the current resource occupancy in the resource pool.

[0179] Step 202: Send resource indication information according to the resource occupancy information, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, and the resource indication information is sent via a control channel and / or a data channel.

[0180] It should be noted that, when the first resource information is available resource information, the resources corresponding to the available resource information are the remaining resources in the resource pool after excluding the resources corresponding to the resource occupancy information.

[0181] When the first resource information is unavailable resource information, the resource corresponding to the unavailable resource information is the resource corresponding to the resource occupation information.

[0182] Optionally, the available resource information is available resource set information, and the unavailable resource information is unavailable resource set information.

[0183] The information transmission method of an embodiment of the present invention obtains resource occupancy information in a resource pool; based on the resource occupancy information, resource indication information is sent, the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent via a control channel and / or a data channel. In this way, a terminal that subsequently communicates with the first terminal in a direct link can use the resource indication information as a reference to avoid resource selection conflicts caused by hidden nodes, thereby improving system reliability and resource utilization.

[0184] Specifically, the control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information;

[0185] Here, the first SCI may be SCI format 1_B.

[0186] Alternatively, the data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information;

[0187] Here, the second SCI may be SCI format 2_C.

[0188] Alternatively, the data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information;

[0189] Here, the first RRC signaling may be the RRC signaling of the PC5 port.

[0190] Alternatively, the data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

[0191] Further, the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information;

[0192] Here, the first coordination information indication field may occupy 1 bit of information, that is, by adding 1 bit in the first SCI, it is used to distinguish whether the first SCI indicates the time-frequency resource position corresponding to the PSSCH or the resource indication information.

[0193] For example, if the first coordination information indication field is "0", it means that the first SCI indicates the time-frequency resource position corresponding to the PSSCH; if the second coordination information indication field is "1", it means that the first SCI indicates the resource indication information, and vice versa.

[0194] Alternatively, the data channel is PSSCH, and the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

[0195] Here, the second coordination information indication field may occupy 1 bit of information, that is, by adding 1 bit in the second SCI, it is used to distinguish the time-frequency resource position of the PSSCH indicated by the second SCI or the resource indication information.

[0196] For example, if the second coordination information indication field is "0", it means that the second SCI indicates the time-frequency resource position of PSSCH; if the second coordination information indication field is "1", it means that the first SCI indicates the resource indication information, and vice versa.

[0197] Optionally, the resource indication information includes at least one of the following:

[0198] a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information;

[0199] a second indication field, where the second indication field is used to indicate a time domain position of the first resource information;

[0200] A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

[0201] It should be noted that the first indication field includes N1 bits, N1≥0 and N1 is an integer.

[0202] Optionally, the frequency domain position includes at least two of a starting point index number of a frequency domain subchannel, a number of continuous frequency domain subchannels, and an ending point index number of a frequency domain subchannel;

[0203] Here, the frequency domain resource granularity corresponding to the above frequency domain position, that is, the minimum unit of frequency domain resources is a subchannel.

[0204] Alternatively, the frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

[0205] Here, the frequency domain resource granularity corresponding to the above frequency domain position, that is, the minimum unit of frequency domain resources is a resource block.

[0206] It should be noted that the second indication field includes N2 bits, N2≥0 and N2 is an integer.

[0207] Optionally, the time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number, and a symbol index;

[0208] Here, the time domain resource granularity corresponding to the above time domain position, that is, the minimum unit of the time domain resource is a logical time slot.

[0209] Alternatively, the time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number, and a symbol index.

[0210] Here, the time domain resource granularity corresponding to the above time domain position, that is, the minimum unit of the time domain resource is a physical time slot.

[0211] It should be noted that the third indication field includes N3 bits, N3≥0 and N3 is an integer. The N3 bits correspond to indicating different time slot lengths, where the time slot may be a logical time slot or a physical time slot.

[0212] Here, the repetition period of the resource in the time domain refers to the time interval at which the resource recurs in the time domain.

[0213] As an optional implementation, step 202 of the embodiment of the present application may include:

[0214] Determining a target indication mode of resource indication information according to the resource occupation information;

[0215] The target indication method includes one of the following methods:

[0216] Method 1: The first resource information is available resource information;

[0217] Method 2: The second resource information is unavailable resource information.

[0218] Here, the resource indication information includes two indication modes: mode 1 and mode 2. Figure 3 As shown in FIG. 1 , it is a schematic diagram of the resource location indicated by the resource indication information in the indication mode 1. Figure 4 The figure shows a schematic diagram of resource locations indicated by resource indication information in the second indication mode.

[0219] This step may specifically include:

[0220] When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, determining that the target indication mode is the second mode;

[0221] When it is determined, based on the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, the target indication mode is determined to be mode one.

[0222] Here, the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, indicating that the occupied or reserved resources are relatively small, and the second method is used for resource indication.

[0223] If the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, it means that they are not occupied, that is, the available resources are small, and method 1 is used for resource indication.

[0224] The above-mentioned determination of adopting the first or second method for resource indication according to the congestion level of the resource pool can save the content overhead of the direct link control channel and improve the indication flexibility.

[0225] According to the target indication method, resource indication information is sent.

[0226] As an optional implementation, the method of the embodiment of the present application may further include:

[0227] Send a second RRC signaling, where the second RRC signaling carries resource indication information corresponding to method one or method two.

[0228] Here, the second RRC signaling carries mode one corresponding to the resource indication information, which means that the target indication mode of the received resource indication information is mode one, that is, the first resource information indicated by the resource indication information is available resource information.

[0229] If no new RRC signaling is received, the mode corresponding to the resource indication information remains mode one; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode two, the mode corresponding to the source indication information is switched or updated to mode two.

[0230] The second RRC signaling carries mode 2 corresponding to the resource indication information, which means that the target indication mode of the received resource indication information is mode 2, that is, the first resource information indicated by the resource indication information is unavailable resource information.

[0231] Similarly, if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode 2; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode 1, the mode corresponding to the source indication information is switched or updated to mode 1.

[0232] As another optional implementation, the method of the embodiment of the present application may further include:

[0233] Send a third RRC signaling, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2;

[0234] Here, the method corresponding to carrying resource indication information through the third RRC signaling configuration supports method one and method two.

[0235] A third SCI is sent, where the third SCI carries a fourth indication field, where the fourth indication field is used to indicate mode one or mode two.

[0236] It should be noted that the fourth indication field includes N4 bits, N4 ≥ 0 and N4 is an integer. When a certain indication bit in the fourth indication field is 0, it indicates that the resource indication information corresponds to method 1; when the indication bit in the fourth indication field is 1, it indicates that the resource indication information corresponds to method 2.

[0237] As an optional implementation, step 202 of the method of the embodiment of the present application sending resource indication information may include:

[0238] The resource indication information is sent using at least one of the following transmission modes:

[0239] Broadcasting method;

[0240] Unicast mode;

[0241] Multicast mode.

[0242] Here, the resource indication information is sent in a broadcasting manner, that is, the first terminal sends the resource indication information to all surrounding terminals in a broadcasting manner.

[0243] The resource indication information is sent in a unicast manner, that is, the first terminal establishes unicast communication with the second terminal, and the first terminal sends the resource indication information to the second terminal via unicast.

[0244] The resource indication information is sent in a multicast manner. The first terminal establishes a communication group with N5 (N5≥1) terminals, and the first terminal sends the resource indication information to other terminals in the group through multicast.

[0245] The information transmission method of an embodiment of the present invention obtains resource occupancy information in a resource pool; based on the resource occupancy information, resource indication information is sent, the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent via a control channel and / or a data channel. In this way, a terminal that subsequently communicates with the first terminal in a direct link can use the resource indication information as a reference to avoid resource selection conflicts caused by hidden nodes, thereby improving system reliability and resource utilization.

[0246] like Figure 5 As shown, it is a schematic diagram of a flow chart of an information transmission method provided by an embodiment of the present invention, which is applied to a second terminal. The method includes:

[0247] Step 501: Receive resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, and the first terminal communicates with the second terminal via a direct link, and the resource indication information is received via a control channel and / or a data channel.

[0248] It should be noted that, when the first resource information is available resource information, the resources corresponding to the available resource information are the remaining resources in the resource pool after excluding the resources corresponding to the resource occupancy information.

[0249] When the first resource information is unavailable resource information, the resource corresponding to the unavailable resource information is the resource corresponding to the resource occupation information.

[0250] Optionally, the available resource information is available resource set information, and the unavailable resource information is unavailable resource set information.

[0251] The information transmission method of the embodiment of the present invention receives resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information. The first terminal communicates with the second terminal via a direct link. In this way, the second terminal can use the resource indication information as a reference when communicating with the first terminal via a direct link, thereby avoiding resource selection conflicts caused by hidden nodes and improving system reliability and resource utilization.

[0252] As an optional implementation, step 501 of the method in the embodiment of the present application may include:

[0253] Obtaining a first candidate resource set according to the resource indication information;

[0254] It should be noted that if the first resource information indicated by the resource indication information is available resource information, the resource set corresponding to the available resource information is determined as the first candidate resource set.

[0255] If the first resource information indicated by the resource indication information is unavailable resource information, the remaining resource set after excluding the resource set corresponding to the unavailable resource in the resource pool is determined as the first candidate resource set.

[0256] According to its own resource perception results, resources are excluded to obtain the second candidate resource set;

[0257] Determine a final candidate resource set according to the first candidate resource set and the second candidate resource set;

[0258] This step may specifically include:

[0259] Determine a set of the first candidate resource set and the second candidate resource set as a final candidate resource set;

[0260] Alternatively, determining the intersection of the first candidate resource set and the second candidate resource set as the final candidate resource set;

[0261] Alternatively, when the intersection of the first candidate resource set and the second candidate resource set is an empty set, or when the intersection of the first candidate resource set and the second candidate resource set does not reach the upper limit of the minimum candidate resource set, the target candidate resource set is determined as the final candidate resource set, and the target candidate resource set is one of the first candidate resource set, the set of the first candidate resource set and the second candidate resource set, and the second candidate resource set.

[0262] Here, the minimum upper limit of the candidate resource set refers to the number of candidate resources with the smallest RSSI in the candidate resource set.

[0263] According to the final candidate resource set, a sending resource is selected for the service packet to be sent.

[0264] As an optional implementation, the method of the embodiment of the present application may further include:

[0265] According to its own resource perception results, it excludes resources and obtains the third candidate resource set;

[0266] According to the third candidate resource set, a sending resource is selected for the service packet to be sent.

[0267] This implementation method illustrates that the second terminal can select a candidate resource set not determined based on the resource indication information, and perform resource exclusion and resource selection only based on its own resource perception result.

[0268] Specifically, the control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or,

[0269] The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or,

[0270] The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or,

[0271] The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

[0272] Further, the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or,

[0273] The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

[0274] Optionally, the resource indication information includes at least one of the following:

[0275] a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information;

[0276] a second indication field, where the second indication field is used to indicate a time domain position of the first resource information;

[0277] A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

[0278] Optionally, the frequency domain position includes at least two of a starting point index number of a frequency domain subchannel, a number of continuous frequency domain subchannels, and an ending point index number of a frequency domain subchannel; or,

[0279] The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

[0280] Optionally, the time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or,

[0281] The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

[0282] Optionally, the method of the embodiment of the present application may further include:

[0283] A second RRC signaling sent by the first terminal is received, where the second RRC signaling carries resource indication information corresponding to method one or method two.

[0284] Optionally, the first method is used to indicate that the first resource information is available resource information; and the second method is used to indicate that the first resource information is unavailable resource information.

[0285] Here, if the second RRC signaling carries mode one corresponding to the resource indication information, the second terminal can determine that the first resource information indicated by the resource indication information is available resource information after receiving the resource indication information; here, if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode one; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode two, the mode corresponding to the source indication information is switched or updated to mode two.

[0286] If the second RRC signaling carries mode 2 corresponding to the resource indication information, then after receiving the resource indication information, the second terminal can determine that the first resource information indicated by the resource indication information is unavailable resource information. Here, similarly, if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode 2; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode 1, then the mode corresponding to the source indication information is switched or updated to mode 1.

[0287] As another optional implementation, the embodiment of the present application may further include:

[0288] Receive a third RRC signaling sent by the first terminal, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2;

[0289] Here, the method corresponding to carrying resource indication information through the third RRC signaling configuration supports method one and method two.

[0290] A third SCI sent by the first terminal is received, where the third SCI carries a fourth indication field, and the fourth indication field is used to indicate mode one or mode two.

[0291] It should be noted that the fourth indication field includes N4 bits, N4 ≥ 0 and N4 is an integer. When a certain indication bit in the fourth indication field is 0, it indicates that the resource indication information corresponds to method 1; when the indication bit in the fourth indication field is 1, it indicates that the resource indication information corresponds to method 2.

[0292] The information transmission method of the embodiment of the present invention receives resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information. The first terminal communicates with the second terminal via a direct link. In this way, the second terminal can use the resource indication information as a reference when communicating with the first terminal via a direct link, thereby avoiding resource selection conflicts caused by hidden nodes and improving system reliability and resource utilization.

[0293] The implementation process of the information transmission method of the embodiment of the present application is described in detail with reference to the following examples.

[0294] Example 1: SCI includes resource indication information, and the resource indication information indicates available resource information (SCI indicates an available resource set)

[0295] Terminal 1 performs resource perception and analyzes the resource occupancy in the resource perception window, and obtains the result that the occupied and reserved resources account for 70% of the total resources, exceeding the resource occupancy threshold of 60%. Terminal 1 indicates the location of available resources in 1st-stageSCI:

[0296] Frequency domain position: The first indicator field N1 bit indicates that subchannel k1 is the starting point of the frequency domain, and there are j consecutive subchannels;

[0297] Time domain position: The second indicator field N2 bit indicates that the starting time slot is n1, and the number of consecutive time slots is i; the first and second indicator fields represent a two-dimensional time-frequency resource grid.

[0298] Repetition period: The third indication field N3 bit indicates that the two-dimensional resource grid appears once every p time slots.

[0299] Terminal 2 receives the resource indication information sent by terminal 1 and obtains the corresponding indicated available resource set. When terminal 2 performs the resource selection process, the following scheme can be adopted:

[0300] 1) According to the available resource set and its own resource perception result, resources are excluded to obtain the available resource set and determine the final candidate resource set; according to the final candidate resource set, a sending resource is selected for the service package to be sent.

[0301] Here, the specific implementation process has been described in the above embodiments and will not be repeated here.

[0302] 2) According to its own resource perception results, it excludes resources to obtain an available resource set, and selects sending resources for the service package to be sent based on the available resource set.

[0303] This example is suitable for non-periodic, bursty services where resource occupancy changes frequently and irregularly. Using SCI to indicate resource occupancy information can be updated frequently and quickly, with good real-time performance and high efficiency.

[0304] Example 2: SCI includes resource indication information, and the resource indication information indicates unavailable resource information (SCI indicates an unavailable resource set)

[0305] Terminal 1 performs resource perception and analyzes the resource occupancy in the resource perception window, and obtains the result that the occupied and reserved resources account for 30% of the total resources, exceeding the resource occupancy threshold of 60%. Terminal 1 indicates the location of the occupied / reserved resources (unavailable resources) in the 1st-stageSCI:

[0306] Frequency domain position: The first indicator field N1 bit indicates that subchannel k1 is the starting point of the frequency domain, and there are j consecutive subchannels;

[0307] Time domain position: The second indicator field N2 bit indicates that the starting time slot is n1, and the number of consecutive time slots is i; the first and second indicator fields represent a two-dimensional time-frequency resource grid.

[0308] Repetition period: The third indication field N3 bit indicates that the two-dimensional resource grid appears once every p time slots.

[0309] Terminal 2 receives the resource indication information sent by terminal 1 and obtains the corresponding indicated unavailable resource set. When terminal 2 performs the resource selection process, the following scheme can be adopted:

[0310] 1) Determine a final candidate resource set based on an available resource set obtained from the unavailable resource set and an available resource set obtained by excluding resources according to its own resource perception result; and select a sending resource for the service package to be sent based on the final candidate resource set.

[0311] Here, the specific implementation process has been described in the above embodiments and will not be repeated here.

[0312] 2) According to its own resource perception results, it excludes resources to obtain an available resource set, and selects sending resources for the service package to be sent based on the available resource set.

[0313] This example is suitable for non-periodic, bursty services, where resource occupancy changes frequently and irregularly. Using SCI to indicate resource occupancy information can be updated frequently and quickly, with good real-time performance and high efficiency.

[0314] Example 3: RRC signaling includes resource indication information, where the resource indication information indicates an available resource set (RRC signaling indicates an available resource set)

[0315] Terminal 1 performs resource perception and analyzes the resource occupancy in the resource perception window, and obtains the result that the occupied and reserved resources account for 70% of the total resources, exceeding the resource occupancy threshold of 60%. Terminal 1 indicates the location of available resources in the RRC configuration signaling of PC5 port:

[0316] Frequency domain position: The first indicator field N1 bit indicates that subchannel k1 is the starting point of the frequency domain, and there are j consecutive subchannels;

[0317] Time domain position: The second indicator field N2 bit indicates that the starting time slot is n1, and the number of consecutive time slots is i; the first and second indicator fields represent a two-dimensional time-frequency resource grid.

[0318] Repetition period: The third indication field N3 bit indicates that the two-dimensional resource grid appears once every p time slots.

[0319] Terminal 2 receives the resource indication information sent by terminal 1 and obtains the corresponding indicated available resource set. When terminal 2 performs the resource selection process, the following scheme can be adopted:

[0320] 1) Eliminate resources according to the available resource set and its own resource perception result to obtain the available resource set, and determine the final candidate resource set; select sending resources for the service package to be sent according to the final candidate resource set.

[0321] Here, the specific implementation process has been described in the above embodiments and will not be repeated here.

[0322] 2) According to its own resource perception results, it excludes resources to obtain an available resource set, and selects sending resources for the service package to be sent based on the available resource set.

[0323] This example is suitable for services with more periodic and stable triggers, and the resource occupation position is fixed and periodic. Use the RRC configuration signaling of the PC5 port to indicate resource occupation information. Once configured, it can remain unchanged for a long time, avoiding frequent sending of SCI to occupy direct link resources.

[0324] Example 4: Sending resource indication information by broadcasting

[0325] Terminal 1 performs resource perception and analyzes the resource occupancy in the resource perception window, and obtains the result that the occupied and reserved resources account for 70% of the total resources, exceeding the resource occupancy threshold of 60%. Terminal 1 indicates the location of the occupied / reserved resources (unavailable resources) in the 1st-stage SCI by broadcasting:

[0326] Frequency domain position: The first indicator field N1 bit indicates that subchannel k1 is the starting point of the frequency domain, and there are j consecutive subchannels;

[0327] Time domain position: The second indicator field N2 bit indicates that the starting time slot is n1, and the number of consecutive time slots is i; the first and second indicator fields represent a two-dimensional time-frequency resource grid.

[0328] Repetition period: The third indication field N3 bit indicates that the two-dimensional resource grid appears once every p time slots.

[0329] Terminal 2 receives the resource indication information broadcast by terminal 1 and obtains the corresponding indicated unavailable resource set. When terminal 2 performs the resource selection process, the following scheme can be adopted:

[0330] 1) Determine a final candidate resource set based on an available resource set obtained from the unavailable resource set and an available resource set obtained by excluding resources according to its own resource perception result; and select a sending resource for the service package to be sent based on the final candidate resource set.

[0331] Here, the specific implementation process has been described in the above embodiments and will not be repeated here.

[0332] 2) According to its own resource perception results, it excludes resources to obtain an available resource set, and selects sending resources for the service package to be sent based on the available resource set.

[0333] This example sends available or unavailable resource sets to other terminals through broadcasting, thereby improving the speed at which other terminals exclude and select resources, avoiding resource conflicts caused by hidden nodes, and improving the receiving performance of the entire system / resource pool.

[0334] Example 5: Sending resource indication information in unicast mode

[0335] Terminal 1 performs resource perception and analyzes the resource occupancy in the resource perception window, and obtains the result: occupied and reserved resources account for 70% of the total resources, exceeding the resource occupancy threshold of 60%. Terminal 1 and Terminal 2 establish unicast transmission of a direct link. Terminal 1 indicates the location of occupied / reserved resources (unavailable resources) in the 1st-stage SCI:

[0336] Frequency domain position: The first indicator field N1 bit indicates that subchannel k1 is the starting point of the frequency domain, and there are j consecutive subchannels;

[0337] Time domain position: The second indicator field N2 bit indicates that the starting time slot is n1, and the number of consecutive time slots is i; the first and second indicator fields represent a two-dimensional time-frequency resource grid.

[0338] Repetition period: The third indication field N3 bit indicates that the two-dimensional resource grid appears once every p time slots.

[0339] After receiving the resource indication information sent by terminal 1, terminal 2 obtains the corresponding indicated unavailable resource set. When terminal 2 performs the resource selection process, the following scheme can be adopted:

[0340] 1) Determine a final candidate resource set based on an available resource set obtained from the unavailable resource set and an available resource set obtained by excluding resources according to its own resource perception result; and select a sending resource for the service package to be sent based on the final candidate resource set.

[0341] Here, the specific implementation process has been described in the above embodiments and will not be repeated here.

[0342] 2) According to its own resource perception results, it excludes resources to obtain an available resource set, and selects sending resources for the service package to be sent based on the available resource set.

[0343] This example is suitable for providing a set of available or unavailable resources to other terminals in a targeted manner, thereby increasing the speed at which other terminals exclude and select resources, avoiding resource conflicts caused by hidden nodes, and improving their own receiving performance.

[0344] Example 6: Sending resource indication information in multicast mode

[0345] Terminal 1 senses resources and analyzes the resource occupancy in the resource sensing window, and obtains the result: occupied and reserved resources account for 70% of the total resources, exceeding the resource occupancy threshold of 60%. Terminal 1 forms a group with other L terminals and establishes a direct link. Terminal 1 indicates the location of occupied / reserved resources (unavailable resources) in the 1st-stage SCI through multicast and sends to the member terminals of the group:

[0346] Frequency domain position: The first indicator field N1 bit indicates that subchannel k1 is the starting point of the frequency domain, and there are j consecutive subchannels;

[0347] Time domain position: The second indicator field N2 bit indicates that the starting time slot is n1, and the number of consecutive time slots is i; the first and second indicator fields represent a two-dimensional time-frequency resource grid.

[0348] Repetition period: The third indication field N3 bit indicates that the two-dimensional resource grid appears once every p time slots.

[0349] Terminal 2, as a member of the group, receives the resource indication information sent by Terminal 1.

[0350] Obtain the unavailable resource set corresponding to the indication. When terminal 2 performs the resource selection process, the following scheme may be adopted:

[0351] 1) Determine a final candidate resource set based on an available resource set obtained from the unavailable resource set and an available resource set obtained by excluding resources according to its own resource perception result; and select a sending resource for the service package to be sent based on the final candidate resource set.

[0352] Here, the specific implementation process has been described in the above embodiments and will not be repeated here.

[0353] 2) According to its own resource perception results, it excludes resources to obtain an available resource set, and selects sending resources for the service package to be sent based on the available resource set.

[0354] This example is applicable to sending available or unavailable resource sets to other terminals in the group through multicast, which improves the speed of group member terminals excluding and selecting resources, avoids resource conflicts caused by hidden nodes, and improves the receiving performance of the terminals and resource pool in the group.

[0355] As shown in FIG. 6 , an embodiment of the present invention further provides a terminal, which is a first terminal, a memory 620, a transceiver 600, and a processor 610: the memory 620 is used to store a computer program; the transceiver 600 is used to send and receive data under the control of the processor 610; the processor 610 is used to read the computer program in the memory 620 and perform the following operations:

[0356] Get resource occupancy information in the resource pool;

[0357] According to the resource occupancy information, resource indication information is sent through a transceiver, where the resource indication information is used to indicate first resource information, and the first resource information is available resource information or unavailable resource information.

[0358] Among them, Figure 6 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 610 and various circuits of memory represented by memory 620 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 600 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including wireless channels, wired channels, optical cables, and other transmission media. For different user devices, the user interface 630 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0359] The processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 610 when performing operations.

[0360] Optionally, the processor 610 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0361] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0362] Optionally, the control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or,

[0363] The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or,

[0364] The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or,

[0365] The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

[0366] Optionally, the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or,

[0367] The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

[0368] Optionally, the resource indication information includes at least one of the following:

[0369] a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information;

[0370] a second indication field, where the second indication field is used to indicate a time domain position of the first resource information;

[0371] A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

[0372] Optionally, the frequency domain position includes at least two of the starting point index number of the frequency domain subchannel, the number of continuous frequency domain subchannels and the ending point index number of the frequency domain subchannel; or,

[0373] The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

[0374] Optionally, the time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or,

[0375] The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

[0376] Optionally, the processor 610 is further configured to:

[0377] Determining a target indication mode of resource indication information according to the resource occupation information;

[0378] According to the target indication method, the resource indication information is sent by the transceiver; wherein the target indication method includes one of the following methods:

[0379] Method 1: The first resource information is available resource information;

[0380] Method 2: The second resource information is unavailable resource information.

[0381] Optionally, the processor 610 is further configured to:

[0382] When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, determining that the target indication mode is the second mode;

[0383] When it is determined, based on the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, the target indication mode is determined to be mode one.

[0384] Optionally, the transceiver 600 is further used for:

[0385] Send a second RRC signaling, where the second RRC signaling carries resource indication information corresponding to method one or method two.

[0386] Optionally, the transceiver 600 is further used for:

[0387] Send a third RRC signaling, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2;

[0388] A third SCI is sent, where the third SCI carries a fourth indication field, where the fourth indication field is used to indicate mode one or mode two.

[0389] Optionally, the transceiver 600 is further used for:

[0390] The resource indication information is sent using at least one of the following transmission modes:

[0391] Broadcasting method;

[0392] Unicast mode;

[0393] Multicast mode.

[0394] The terminal of an embodiment of the present invention obtains resource occupancy information in a resource pool; based on the resource occupancy information, resource indication information is sent, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, and the resource indication information is sent via a control channel and / or a data channel. In this way, subsequent terminals that communicate with the first terminal in a direct link can use the resource indication information as a reference to avoid resource selection conflicts caused by hidden nodes, thereby improving system reliability and resource utilization.

[0395] It should be noted here that the above-mentioned device provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0396] like Figure 7 As shown, the embodiment of the present invention further provides an information transmission device, including:

[0397] The acquisition module 701 is used to acquire resource occupancy information in the resource pool;

[0398] The first sending module 702 is used to send resource indication information according to the resource occupancy information, and the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and / or a data channel.

[0399] Optionally, the control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or,

[0400] The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or,

[0401] The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or,

[0402] The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

[0403] Optionally, the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or,

[0404] The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

[0405] Optionally, the resource indication information includes at least one of the following:

[0406] a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information;

[0407] a second indication field, where the second indication field is used to indicate a time domain position of the first resource information;

[0408] A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

[0409] Optionally, the frequency domain position includes at least two of a starting point index number of a frequency domain subchannel, a number of continuous frequency domain subchannels, and an ending point index number of a frequency domain subchannel; or,

[0410] The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

[0411] Optionally, the time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or,

[0412] The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

[0413] Optionally, the first sending module 702 includes:

[0414] A first determining unit, configured to determine a target indication mode of the resource indication information according to the resource occupancy information;

[0415] The first sending unit is configured to send resource indication information according to the target indication method; wherein the target indication method includes one of the following methods:

[0416] Method 1: The first resource information is available resource information;

[0417] Method 2: The second resource information is unavailable resource information.

[0418] Optionally, the first determining unit is specifically configured to:

[0419] When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, determining that the target indication mode is the second mode;

[0420] When it is determined, based on the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, the target indication mode is determined to be mode one.

[0421] Optionally, the information transmission device may further include:

[0422] The second sending module is used to send a second RRC signaling, where the second RRC signaling carries resource indication information corresponding to mode one or mode two.

[0423] Optionally, the information transmission device may further include:

[0424] A third sending module, used to send a third RRC signaling, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2;

[0425] The fourth sending module is used to send a third SCI, where the third SCI carries a fourth indication field, and the fourth indication field is used to indicate mode one or mode two.

[0426] Optionally, the first sending module 702 includes:

[0427] The second sending unit is configured to send the resource indication information by using at least one of the following transmission modes:

[0428] Broadcasting method;

[0429] Unicast mode;

[0430] Multicast mode.

[0431] The information transmission device of the embodiment of the present invention obtains resource occupancy information in a resource pool; based on the resource occupancy information, resource indication information is sent, and the resource indication information is used to indicate first resource information, and the first resource information is available resource information or unavailable resource information. The resource indication information is sent through a control channel and / or a data channel. In this way, the terminal that subsequently communicates with the first terminal in a direct link can use the resource indication information as a reference to avoid resource selection conflicts caused by hidden nodes, thereby improving system reliability and resource utilization.

[0432] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0433] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0434] It should be noted here that the above-mentioned device provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0435] In some embodiments of the present invention, a computer-readable storage medium is further provided, on which a computer program is stored, and when the program is executed by a processor, the following steps are implemented:

[0436] Get resource occupancy information in the resource pool;

[0437] According to the resource occupancy information, resource indication information is sent, the resource indication information is used to indicate first resource information, the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and / or a data channel.

[0438] When the program is executed by the processor, the above application can be realized. Figure 2 To avoid repetition, all implementation methods in the method embodiment on the first terminal side are not described again here.

[0439] like Figure 8 As shown, an embodiment of the present invention further provides a terminal, which is a second terminal, including a memory 820, a transceiver 800, and a processor 810: the memory 820 is used to store a computer program; the transceiver 800 is used to send and receive data under the control of the processor 810; the processor 810 is used to read the computer program in the memory and perform the following operations:

[0440] Resource indication information sent by a first terminal is received through a transceiver, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, and the first terminal communicates with the second terminal through a direct link, and the resource indication information is received through a control channel and / or a data channel.

[0441] Among them, Figure 8 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 810 and various circuits of memory represented by memory 820 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 800 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including transmission media such as wireless channels, wired channels, and optical cables. For different user devices, the user interface 830 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0442] The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 810 when performing operations.

[0443] Optionally, the processor 810 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0444] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory may also be physically separated. Optionally, the processor 810 is also used to:

[0445] Obtaining a first candidate resource set according to the resource indication information;

[0446] According to its own resource perception results, resources are excluded to obtain the second candidate resource set;

[0447] Determine a final candidate resource set according to the first candidate resource set and the second candidate resource set;

[0448] According to the final candidate resource set, a sending resource is selected for the service packet to be sent.

[0449] Optionally, the processor 810 is further configured to:

[0450] determining a combination of the first candidate resource set and the second candidate resource set as a final candidate resource set; or,

[0451] determining the intersection of the first candidate resource set and the second candidate resource set as the final candidate resource set; or,

[0452] When the intersection of the first candidate resource set and the second candidate resource set is an empty set, or when the intersection of the first candidate resource set and the second candidate resource set does not reach the upper limit of the minimum candidate resource set, the target candidate resource set is determined as the final candidate resource set, and the target candidate resource set is one of the first candidate resource set, the set of the first candidate resource set and the second candidate resource set, and the second candidate resource set.

[0453] Optionally, the processor 810 is further configured to:

[0454] According to its own resource perception results, it excludes resources and obtains the third candidate resource set;

[0455] According to the third candidate resource set, a sending resource is selected for the service packet to be sent.

[0456] Optionally, the control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or,

[0457] The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or,

[0458] The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or,

[0459] The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

[0460] Optionally, the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or,

[0461] The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

[0462] Optionally, the resource indication information includes at least one of the following:

[0463] a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information;

[0464] a second indication field, where the second indication field is used to indicate a time domain position of the first resource information;

[0465] A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

[0466] Optionally, the frequency domain position includes at least two of the starting point index number of the frequency domain subchannel, the number of continuous frequency domain subchannels and the ending point index number of the frequency domain subchannel; or,

[0467] The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

[0468] Optionally, the time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or,

[0469] The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

[0470] Optionally, the transceiver 800 is further used for:

[0471] A second RRC signaling sent by the first terminal is received, where the second RRC signaling carries resource indication information corresponding to method one or method two.

[0472] Optionally, the transceiver 800 is further used for:

[0473] Receive a third RRC signaling sent by the first terminal, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2;

[0474] A third SCI sent by the first terminal is received, where the third SCI carries a fourth indication field, and the fourth indication field is used to indicate mode one or mode two.

[0475] Optionally, the first method is used to indicate that the first resource information is available resource information;

[0476] The second method is used to indicate that the first resource information is unavailable resource information.

[0477] The terminal of the embodiment of the present invention receives resource indication information sent by the first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information. The first terminal communicates with the second terminal via a direct link. In this way, the second terminal can use the resource indication information as a reference when communicating with the first terminal via the direct link, thereby avoiding resource selection conflicts caused by hidden nodes and improving system reliability and resource utilization.

[0478] It should be noted here that the above-mentioned device provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0479] like Fig. 9 As shown, the present invention also provides an information transmission device, including:

[0480] The first receiving module 901 is used to receive resource indication information sent by the first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, and the first terminal communicates with the second terminal via a direct link, and the resource indication information is received via a control channel and / or a data channel.

[0481] Optionally, the information transmission device may further include:

[0482] A first processing module, configured to obtain a first candidate resource set according to the resource indication information;

[0483] The second processing module is used to exclude resources according to its own resource perception result to obtain a second candidate resource set;

[0484] A third processing module, configured to determine a final candidate resource set according to the first candidate resource set and the second candidate resource set;

[0485] The first resource selection module is used to select a sending resource for the service packet to be sent according to the final candidate resource set.

[0486] Optionally, the third processing module includes:

[0487] a first processing unit, configured to determine a set of the first candidate resource set and the second candidate resource set as a final candidate resource set; or

[0488] a second processing unit, configured to determine an intersection of the first candidate resource set and the second candidate resource set as a final candidate resource set; or

[0489] The third processing unit is used to determine a target candidate resource set as a final candidate resource set when the intersection of the first candidate resource set and the second candidate resource set is an empty set, or when the intersection of the first candidate resource set and the second candidate resource set does not reach the upper limit of the minimum candidate resource set, wherein the target candidate resource set is one of the first candidate resource set, the set of the first candidate resource set and the second candidate resource set, and the second candidate resource set.

[0490] Optionally, the information transmission device may further include:

[0491] The fourth processing module is used to exclude resources according to its own resource perception result to obtain a third candidate resource set;

[0492] The first resource selection module is used to select a sending resource for the service packet to be sent according to the third candidate resource set.

[0493] Optionally, the control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or,

[0494] The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or,

[0495] The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or,

[0496] The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

[0497] Optionally, the control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or,

[0498] The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

[0499] Optionally, the resource indication information includes at least one of the following:

[0500] a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information;

[0501] a second indication field, where the second indication field is used to indicate a time domain position of the first resource information;

[0502] A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

[0503] Optionally, the frequency domain position includes at least two of a starting point index number of a frequency domain subchannel, a number of continuous frequency domain subchannels, and an ending point index number of a frequency domain subchannel; or,

[0504] The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

[0505] Optionally, the time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or,

[0506] The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

[0507] Optionally, the information transmission device further includes:

[0508] The second receiving module is used to receive a second RRC signaling sent by the first terminal, where the second RRC signaling carries resource indication information corresponding to mode one or mode two.

[0509] Optionally, the information transmission device further includes:

[0510] A third receiving module is used to receive a third RRC signaling sent by the first terminal, where the third RRC signaling carries mode 1 and mode 2 corresponding to resource indication information;

[0511] The fourth receiving module is used to receive the third SCI sent by the first terminal, where the third SCI carries a fourth indication field, and the fourth indication field is used to indicate mode one or mode two.

[0512] Optionally, the first mode is used to indicate that the first resource information is available resource information;

[0513] The second method is used to indicate that the first resource information is unavailable resource information.

[0514] The information transmission device of the embodiment of the present invention receives resource indication information sent by the first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information. The first terminal communicates with the second terminal via a direct link. In this way, the second terminal can use the resource indication information as a reference when communicating with the first terminal via the direct link, thereby avoiding resource selection conflicts caused by hidden nodes and improving system reliability and resource utilization.

[0515] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0516] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0517] It should be noted here that the above-mentioned device provided in the embodiment of the present invention can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0518] In some embodiments of the present invention, there is further provided a processor-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the following steps are implemented:

[0519] Receive resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, where the first terminal communicates with the second terminal via a direct link, and where the resource indication information is received via a control channel and / or a data channel.

[0520] When the program is executed by the processor, the above application can be realized. Figure 5 To avoid repetition, all implementation methods in the method embodiment on the second terminal side are not described again here.

[0521] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, applicable systems can be global system of mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet radio service (General Packet Radio Service, GPRS) system, long-term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplex (Time Division Duplex, TDD) system, advanced long-term evolution (Long Term Evolution Advanced, LTE-A) system, universal mobile system (Universal Mobile Telecommunication System, UMTS), global interconnection microwave access (Worldwide interoperability for Microwave Access, WiMAX) system, 5G new air interface (New Radio, NR) system, etc. These various systems include terminal equipment and network equipment. The system may also include core network parts, such as the Evolved Packet System (EPS), 5G System (5GS), etc.

[0522] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0523] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0524] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0525] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0526] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0527] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An information transmission method, applied to a first terminal, characterized in that: include: Get resource occupancy information in the resource pool; Send resource indication information according to the resource occupation information, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and / or a data channel; The sending of resource indication information according to the resource occupation information: Determining a target indication mode of resource indication information according to the resource occupation information; Send resource indication information according to the target indication method; wherein the target indication method includes one of the following methods: Method 1: The first resource information is available resource information; Method 2: The first resource information is unavailable resource information; The determining, according to the resource occupancy information, a target indication mode of the resource indication information comprises: When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, determining that the target indication mode is the second mode; When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, determining that the target indication mode is the mode 1; The method further comprises: Sending a second RRC signaling, where the second RRC signaling carries mode 1 or mode 2 corresponding to resource indication information; The second RRC signaling carries mode 1 corresponding to the resource indication information, indicating that the target indication mode of the received resource indication information is mode 1, that is, the first resource information indicated by the resource indication information is available resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode 1; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode 2, the mode corresponding to the original indication information is switched or updated to mode 2; If the second RRC signaling carries mode two corresponding to the resource indication information, it means that the target indication mode of the received resource indication information is mode two, that is, the first resource information indicated by the resource indication information is unavailable resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode two; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode one, the mode corresponding to the original indication information is switched or updated to mode one.

2. The method according to claim 1, characterized in that: The control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or, The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or, The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or, The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

3. The method according to claim 2, characterized in that The control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or, The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

4. The method according to claim 1, characterized in that: The resource indication information includes at least one of the following: a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information; a second indication field, where the second indication field is used to indicate a time domain position of the first resource information; A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

5. The method according to claim 4, characterized in that The frequency domain position includes at least two of the starting point index number of the frequency domain subchannel, the number of continuous frequency domain subchannels and the ending point index number of the frequency domain subchannel; or, The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

6. The method according to claim 4, characterized in that The time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or, The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

7. The method according to claim 1, characterized in that The method further comprises: Send a third RRC signaling, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2; A third SCI is sent, where the third SCI carries a fourth indication field, where the fourth indication field is used to indicate mode one or mode two.

8. The method according to claim 1, characterized in that The sending of resource indication information includes: The resource indication information is sent using at least one of the following transmission modes: Broadcasting method; Unicast mode; Multicast mode.

9. An information transmission method, applied to a second terminal, characterized in that: include: receiving resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, where the first terminal communicates with the second terminal through a direct link, and where the resource indication information is received through a control channel and / or a data channel; where the resource indication information is sent by the first terminal according to a target indication mode, where the target indication mode is determined by the first terminal based on resource occupancy information, and where the target indication mode includes one of the following modes: Method 1: The first resource information is available resource information; Method 2: The first resource information is unavailable resource information; When the first terminal determines, according to the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, the target indication mode is determined by the first terminal as mode 2; When the first terminal determines, according to the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, the target indication mode is determined by the first terminal as mode 1; The method further comprises: Receiving second RRC signaling sent by the first terminal, where the second RRC signaling carries mode 1 or mode 2 corresponding to resource indication information; The second RRC signaling carries mode 1 corresponding to the resource indication information, indicating that the target indication mode of the received resource indication information is mode 1, that is, the first resource information indicated by the resource indication information is available resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode 1; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode 2, the mode corresponding to the original indication information is switched or updated to mode 2; If the second RRC signaling carries mode two corresponding to the resource indication information, it means that the target indication mode of the received resource indication information is mode two, that is, the first resource information indicated by the resource indication information is unavailable resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode two; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode one, the mode corresponding to the original indication information is switched or updated to mode one.

10. The method according to claim 9, characterized in that After receiving the resource indication information sent by the first terminal, the method further includes: Obtaining a first candidate resource set according to the resource indication information; According to its own resource perception results, resources are excluded to obtain the second candidate resource set; Determine a final candidate resource set according to the first candidate resource set and the second candidate resource set; According to the final candidate resource set, a sending resource is selected for the service packet to be sent.

11. The method according to claim 10, characterized in that The determining a final candidate resource set according to the first candidate resource set and the second candidate resource set includes: determining a combination of the first candidate resource set and the second candidate resource set as a final candidate resource set; or, determining the intersection of the first candidate resource set and the second candidate resource set as the final candidate resource set; or, When the intersection of the first candidate resource set and the second candidate resource set is an empty set, or when the intersection of the first candidate resource set and the second candidate resource set does not reach the upper limit of the minimum candidate resource set, the target candidate resource set is determined as the final candidate resource set, and the target candidate resource set is one of the first candidate resource set, the set of the first candidate resource set and the second candidate resource set, and the second candidate resource set.

12. The method according to claim 9, characterized in that The method further comprises: According to its own resource perception results, it excludes resources and obtains the third candidate resource set; According to the third candidate resource set, a sending resource is selected for the service packet to be sent.

13. The method according to claim 9, characterized in that The control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or, The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or, The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or, The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

14. The method according to claim 13, characterized in that The control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or, The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

15. The method according to claim 9, characterized in that The resource indication information includes at least one of the following: a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information; a second indication field, where the second indication field is used to indicate a time domain position of the first resource information; A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

16. The method according to claim 15, characterized in that The frequency domain position includes at least two of the starting point index number of the frequency domain subchannel, the number of continuous frequency domain subchannels and the ending point index number of the frequency domain subchannel; or, The frequency domain position includes a starting point index of a resource block RB and the number of consecutive RBs.

17. The method according to claim 15, characterized in that The time domain position includes at least one of a direct frame number DFN, a logical subframe number, a logical time slot number and a symbol index; or, The time domain position includes at least one of a system frame number SFN, a physical subframe number, a physical time slot number and a symbol index.

18. The method according to claim 9, characterized in that The method further comprises: Receive a third RRC signaling sent by the first terminal, where the third RRC signaling carries resource indication information corresponding to mode 1 and mode 2; A third SCI sent by the first terminal is received, where the third SCI carries a fourth indication field, and the fourth indication field is used to indicate mode one or mode two.

19. A terminal, the terminal being a first terminal, characterized in that: It includes memory, transceiver and processor: memory is used to store computer programs; a transceiver, for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: Get resource occupancy information in the resource pool; Sending resource indication information through a transceiver according to the resource occupancy information, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, and the resource indication information is sent through a control channel and / or a data channel; The processor is further configured to: Determining a target indication mode of resource indication information according to the resource occupation information; According to the target indication method, the resource indication information is sent by the transceiver; wherein the target indication method includes one of the following methods: Method 1: The first resource information is available resource information; Method 2: The first resource information is unavailable resource information; The processor is further configured to: When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, determining that the target indication mode is the second mode; When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, determining that the target indication mode is the mode 1; The transceiver is further used for: Sending a second RRC signaling, where the second RRC signaling carries mode 1 or mode 2 corresponding to resource indication information; The second RRC signaling carries mode 1 corresponding to the resource indication information, indicating that the target indication mode of the received resource indication information is mode 1, that is, the first resource information indicated by the resource indication information is available resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode 1; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode 2, the mode corresponding to the original indication information is switched or updated to mode 2; If the second RRC signaling carries mode two corresponding to the resource indication information, it means that the target indication mode of the received resource indication information is mode two, that is, the first resource information indicated by the resource indication information is unavailable resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode two; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode one, the mode corresponding to the original indication information is switched or updated to mode one.

20. The terminal according to claim 19, characterized in that The control channel is a physical direct link control channel PSCCH, the PSCCH carries first direct link control information SCI, and the first SCI includes the resource indication information; or, The data channel is a physical direct link shared channel PSSCH, the PSSCH carries a second SCI, and the second SCI includes the resource indication information; or, The data channel is a PSSCH, the PSSCH carries a first radio resource control RRC instruction, and the first RRC signaling includes the resource indication information; or, The data channel is a PSSCH, the PSSCH carries data information, and the data information includes the resource indication information.

21. The terminal according to claim 20, characterized in that: The control channel is a PSCCH, the first SCI includes a first coordination information indication field, and the first coordination information indication field is used to indicate whether the first SCI includes the resource indication information; or, The data channel is PSSCH, the second SCI includes a second coordination information indication field, and the second coordination information indication field is used to indicate whether the second SCI includes the resource indication information.

22. The terminal according to claim 19, characterized in that The resource indication information includes at least one of the following: a first indication field, where the first indication field is used to indicate a frequency domain position of the first resource information; a second indication field, where the second indication field is used to indicate a time domain position of the first resource information; A third indication field, wherein the third indication field is used to indicate a repetition period of the resources in the first resource information in the time domain.

23. An information transmission device, characterized in that: include: An acquisition module is used to obtain resource occupancy information in a resource pool; A first sending module, configured to send resource indication information according to the resource occupancy information, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, and the resource indication information is sent via a control channel and / or a data channel; The first sending module includes: A first determining unit, configured to determine a target indication mode of the resource indication information according to the resource occupancy information; The first sending unit is configured to send resource indication information according to the target indication method; wherein the target indication method includes one of the following methods: Method 1: The first resource information is available resource information; Method 2: The first resource information is unavailable resource information; The first determining unit is specifically configured to: When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, determining that the target indication mode is the second mode; When it is determined according to the resource occupation information that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, determining that the target indication mode is the mode 1; The information transmission device also includes: A second sending module, used to send a second RRC signaling, where the second RRC signaling carries mode 1 or mode 2 corresponding to resource indication information; The second RRC signaling carries mode 1 corresponding to the resource indication information, indicating that the target indication mode of the received resource indication information is mode 1, that is, the first resource information indicated by the resource indication information is available resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode 1; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode 2, the mode corresponding to the original indication information is switched or updated to mode 2; If the second RRC signaling carries mode two corresponding to the resource indication information, it means that the target indication mode of the received resource indication information is mode two, that is, the first resource information indicated by the resource indication information is unavailable resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode two; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode one, the mode corresponding to the original indication information is switched or updated to mode one.

24. A terminal, the terminal being a second terminal, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: receiving resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, where the first terminal communicates with the second terminal through a direct link, and where the resource indication information is received through a control channel and / or a data channel; where the resource indication information is sent by the first terminal according to a target indication mode, where the target indication mode is determined by the first terminal based on resource occupancy information, and where the target indication mode includes one of the following modes: Method 1: The first resource information is available resource information; Method 2: The first resource information is unavailable resource information; When the first terminal determines, according to the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, the target indication mode is determined by the first terminal as mode 2; When the first terminal determines, according to the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, the target indication mode is determined by the first terminal as mode 1; The transceiver is also used for: Receiving second RRC signaling sent by the first terminal, where the second RRC signaling carries mode 1 or mode 2 corresponding to resource indication information; The second RRC signaling carries mode 1 corresponding to the resource indication information, indicating that the target indication mode of the received resource indication information is mode 1, that is, the first resource information indicated by the resource indication information is available resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode 1; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode 2, the mode corresponding to the original indication information is switched or updated to mode 2; If the second RRC signaling carries mode two corresponding to the resource indication information, it means that the target indication mode of the received resource indication information is mode two, that is, the first resource information indicated by the resource indication information is unavailable resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode two; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode one, the mode corresponding to the original indication information is switched or updated to mode one.

25. The terminal according to claim 24, characterized in that The processor is further configured to: Obtaining a first candidate resource set according to the resource indication information; According to its own resource perception results, resources are excluded to obtain the second candidate resource set; Determine a final candidate resource set according to the first candidate resource set and the second candidate resource set; According to the final candidate resource set, a sending resource is selected for the service packet to be sent.

26. The terminal according to claim 25, characterized in that The processor is further configured to: determining a combination of the first candidate resource set and the second candidate resource set as a final candidate resource set; or, determining the intersection of the first candidate resource set and the second candidate resource set as the final candidate resource set; or, When the intersection of the first candidate resource set and the second candidate resource set is an empty set, or when the intersection of the first candidate resource set and the second candidate resource set does not reach the upper limit of the minimum candidate resource set, the target candidate resource set is determined as the final candidate resource set, and the target candidate resource set is one of the first candidate resource set, the set of the first candidate resource set and the second candidate resource set, and the second candidate resource set.

27. The terminal according to claim 24, characterized in that The processor is further configured to: According to its own resource perception results, it excludes resources and obtains the third candidate resource set; According to the third candidate resource set, a sending resource is selected for the service packet to be sent.

28. An information transmission device, applied to a second terminal, characterized in that: include: A first receiving module is configured to receive resource indication information sent by a first terminal, where the resource indication information is used to indicate first resource information, where the first resource information is available resource information or unavailable resource information, where the first terminal communicates with the second terminal via a direct link, and where the resource indication information is received via a control channel and / or a data channel; where the resource indication information is sent by the first terminal according to a target indication mode, where the target indication mode is determined by the first terminal based on resource occupancy information, and where the target indication mode includes one of the following modes: Method 1: The first resource information is available resource information; Method 2: The first resource information is unavailable resource information; When the first terminal determines, according to the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is less than a preset threshold, the target indication mode is determined by the first terminal as mode 2; When the first terminal determines, according to the resource occupation information, that the proportion of occupied or reserved resources in the resource pool is greater than or equal to the preset threshold, the target indication mode is determined by the first terminal as mode 1; The information transmission device also includes: A second receiving module is used to receive a second RRC signaling sent by the first terminal, where the second RRC signaling carries mode 1 or mode 2 corresponding to resource indication information; The second RRC signaling carries mode 1 corresponding to the resource indication information, indicating that the target indication mode of the received resource indication information is mode 1, that is, the first resource information indicated by the resource indication information is available resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode 1; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode 2, the mode corresponding to the original indication information is switched or updated to mode 2; If the second RRC signaling carries mode two corresponding to the resource indication information, it means that the target indication mode of the received resource indication information is mode two, that is, the first resource information indicated by the resource indication information is unavailable resource information; if no new RRC signaling is received, the mode corresponding to the resource indication information remains mode two; if new RRC signaling is received, and the mode corresponding to the resource indication information carried by the new RRC signaling is mode one, the mode corresponding to the original indication information is switched or updated to mode one.

29. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the steps of the information transmission method described in any one of claims 1 to 8, or to execute the steps of the information transmission method described in any one of claims 9 to 18.

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