Information transmission method, device and information transmission equipment

Abstract

The application provides an information transmission method, device and equipment. The method comprises the following steps: receiving direct communication interface control information (SCI) sent by a first terminal; and sending auxiliary information to a second device, wherein the auxiliary information is generated according to the SCI. According to the information transmission method, after the first device receives the SCI sent by the first terminal, the first device can generate auxiliary information according to the SCI, and send the auxiliary information to the second device, so that the second device can determine the time when data reaches the first device according to the indication in the auxiliary information, and the resources required for data transmission are allocated to the first device in advance, thereby reducing the time required for the first device to perform data forwarding, and reducing the end-to-end transmission delay of the service.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless technology, and particularly refers to an information transmission method and device and information transmission equipment. BACKGROUND

[0002] Direct communication refers to a manner in which terminals in proximity can perform data transmission within a short distance range through a direct communication link (also referred to as a Sidelink or PC5 link). The wireless interface corresponding to the Sidelink link is referred to as a direct communication interface (also referred to as a Sidelink interface or PC5 interface). In order to expand network coverage, it can be considered to introduce a relay. The relay itself can be a terminal with a relay function. For a user-to-network relay (UE-to-Network Relay, referred to as U2N relay), the interface between the relay and the network uses a Uu interface, and the interface between the relay and the remote UE (also referred to as a remote UE) uses a direct communication interface (also referred to as a Sidelink interface or PC5 interface). The link between the relay and the network can be referred to as a backhaul link for the remote UE.

[0003] In the L2 U2N scenario, after the relay UE receives the Sidelink Control Information (SCI) from the remote UE, the SCI is first decoded, and then data on the direct communication interface is received according to the indication of the SCI. Then, the relay UE determines whether to trigger the BSR of the Uu interface according to the data received from the remote UE according to the Uu interface buffer status reporting (BSR) trigger condition. If the Uu BSR trigger condition is met, the relay UE reports the BSR to the base station serving it, at this time, if the relay has no uplink resource available, it can also trigger a scheduling request (SR) to obtain the transmission resource of the BSR. The base station allocates the uplink resource of the Uu interface for the relay UE according to the BSR. Then the relay UE forwards the data received from the remote UE to the base station using the uplink resource.

[0004] In the above relay transmission system, the relay UE needs to request resources through the SR / BSR process after receiving data from the remote UE, and both the SR and BSR processes need at least 1 RTT (Round Trip Time) duration. If the retransmission of the SR / BSR is considered, the time required is longer. Therefore, using the above method cannot meet the end-to-end delay requirement of delay-sensitive services, and therefore, an optimization mechanism needs to be considered to reduce the end-to-end delay of the relay system. SUMMARY

[0005] To solve the above technical problems, the purpose of the present application is to provide an information transmission method, device and information transmission equipment, which are used to solve the problem of long delay in the process of transmitting data by the remote terminal using the relay and the opposite terminal.

[0006] The embodiments of the present application provide an information transmission method, wherein the method is executed by a first device, and the method comprises the following steps.

[0007] receiving direct communication interface control information (SCI) sent by a first terminal;

[0008] sending auxiliary information to a second device, wherein the auxiliary information is generated according to the SCI.

[0009] Optionally, the information transmission method, wherein the method further comprises: after receiving the SCI sent by the first terminal, if resource reservation information is included in the SCI, generating the auxiliary information according to the SCI.

[0010] Optionally, the information transmission method, wherein the resource reservation information comprises at least one of the following:

[0011] resource reservation information of direct communication interface initial transmission resources;

[0012] resource reservation information of direct communication interface retransmission resources.

[0013] Optionally, the information transmission method, wherein the second device is one of the following:

[0014] a network device accessed by the first device through a Uu interface;

[0015] a device responsible for scheduling direct communication interface resources between the first device and a second terminal;

[0016] wherein the second terminal is a communication opposite terminal that communicates with the first terminal through the first device.

[0017] Optionally, the information transmission method, wherein the auxiliary information comprises at least one of the following:

[0018] time domain resource indication information;

[0019] data size.

[0020] Optionally, the information transmission method, wherein the time domain resource indication information is determined according to resource reservation information carried in the SCI.

[0021] Optionally, the information transmission method, wherein the data size is determined according to resource reservation information carried in the SCI and modulation and coding strategy (MCS) carried in the SCI.

[0022] Optionally, the information transmission method, wherein the time domain resource indication information is used to indicate time domain resource information corresponding to initial transmission and / or retransmission.

[0023] Optionally, the information transmission method, wherein the time domain resource indication information indicates time domain resource information corresponding to retransmission, including indicating specific time domain resource corresponding to each retransmission.

[0024] Optionally, the information transmission method, wherein the time domain resource indication information indicates time domain resource information corresponding to initial transmission, including one of the following:

[0025] indicating a starting position and a period of time domain resource corresponding to initial transmission;

[0026] indicating a starting position, a period and a repetition number of time domain resource corresponding to initial transmission;

[0027] indicating a starting position, a period and a resource end time of time domain resource corresponding to initial transmission.

[0028] Optionally, the information transmission method, wherein the SCI is a first-stage SCI or a second-stage SCI.

[0029] Optionally, the information transmission method, wherein the method further includes:

[0030] receiving a direct communication interface configuration resource sent by the second device according to the auxiliary information;

[0031] forwarding direct communication interface data sent by the first terminal through the direct communication interface configuration resource.

[0032] Optionally, the information transmission method, wherein in the case that the second device is a network device accessed by the first device through a Uu interface, the direct communication interface configuration resource includes at least one of the following:

[0033] a first type of preconfigured grant of the Uu interface configured for the first device;

[0034] a second type of preconfigured grant of the Uu interface configured for the first device;

[0035] a dynamically scheduled resource of the Uu interface configured for the first device.

[0036] Optionally, the information transmission method, wherein the method further comprises:

[0037] forwarding, to the second device, data sent by the first terminal through the direct communication interface, by using preconfigured grant information or a dynamically scheduled resource of the Uu interface configured for the first device.

[0038] Optionally, the information transmission method, wherein in the case where the second device is a device responsible for scheduling resources of the direct communication interface between the first device and the second terminal, the direct communication interface configuration resource comprises at least one of:

[0039] a first type of preconfigured grant configured for the direct communication interface between the first device and the second terminal;

[0040] a second type of preconfigured grant configured for the direct communication interface between the first device and the second terminal;

[0041] a dynamically scheduled resource configured for the direct communication interface between the first device and the second terminal.

[0042] Optionally, the information transmission method, wherein data sent by the first terminal through the direct communication interface is forwarded to the second terminal by using the direct communication interface configuration resource.

[0043] Optionally, the information transmission method, wherein the device responsible for scheduling resources of the direct communication interface between the first device and the second terminal is the second terminal, or a third terminal different from the first terminal and the second terminal.

[0044] Embodiments of the present application also provide another information transmission method, wherein the method is performed by a second device and comprises:

[0045] receiving auxiliary information sent by a first device; wherein the auxiliary information is generated by the first device according to direct communication interface control information (SCI) sent by a first terminal.

[0046] Optionally, the information transmission method, wherein the second device is one of:

[0047] a network device accessed by the first device through a Uu interface;

[0048] a device responsible for scheduling a direct communication interface resource between the first device and the second terminal;

[0049] The second terminal is a communication peer of the first terminal for relaying communication through the first device.

[0050] Optionally, the information transmission method, wherein the auxiliary information comprises at least one of the following:

[0051] time domain resource indication information;

[0052] data size.

[0053] Optionally, the information transmission method, wherein the time domain resource indication information is determined according to resource reservation information carried in the SCI.

[0054] Optionally, the information transmission method, wherein the data size is determined according to resource reservation information carried in the SCI and modulation and coding strategy (MCS) carried in the SCI.

[0055] Optionally, the information transmission method, wherein the time domain resource indication information is used to indicate time domain resource information corresponding to initial transmission and / or retransmission.

[0056] Optionally, the information transmission method, wherein the time domain resource indication information indicates time domain resource information corresponding to retransmission, comprising:

[0057] indicating specific time domain resources corresponding to each retransmission.

[0058] Optionally, the information transmission method, wherein the time domain resource indication information indicates time domain resource information corresponding to initial transmission, comprising one of the following:

[0059] indicating a starting position and a period of time domain resources corresponding to initial transmission;

[0060] indicating a starting position, a period and a repetition number of time domain resources corresponding to initial transmission;

[0061] indicating a starting position, a period and a resource end time of time domain resources corresponding to initial transmission.

[0062] Optionally, the information transmission method, wherein the method further comprises:

[0063] determining a direct communication interface configuration resource of the first device according to the auxiliary information;

[0064] sending the direct communication interface configuration resource to the first device.

[0065] Optionally, the information transmission method, wherein, in a case that the second device is a network device accessed by the first device through a Uu interface, the direct communication interface configured resource comprises at least one of the following:

[0066] a first type of preconfigured grant of the Uu interface configured for the first device;

[0067] a second type of preconfigured grant of the Uu interface configured for the first device;

[0068] a dynamically scheduled resource of the Uu interface configured for the first device;

[0069] wherein a time domain location of the resource indicated in the preconfigured grant or the dynamically scheduled resource matches a time domain location of the resource indicated in the assistance information.

[0070] Optionally, the information transmission method, wherein, in a case that the second device is a device responsible for scheduling a direct communication interface resource between the first device and a second terminal, the direct communication interface configured resource comprises at least one of the following:

[0071] a first type of preconfigured grant configured for a direct communication interface between the first device and the second terminal; wherein the second terminal is a communication peer of the first terminal relaying communication through the first device;

[0072] a second type of preconfigured grant configured for the direct communication interface between the first device and the second terminal;

[0073] a dynamically scheduled resource configured for the direct communication interface between the first device and the second terminal.

[0074] Embodiments of the present application provide an information transmission device, the information transmission device being a first device, comprising a memory, a transceiver and a processor:

[0075] the memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0076] receive direct communication interface control information (SCI) sent by a first terminal;

[0077] send assistance information to a second device, wherein the assistance information is generated according to the SCI.

[0078] Optionally, the information transmission device, wherein the processor is further configured to:

[0079] After receiving the SCI sent by the first terminal, if the resource reservation information is included in the SCI, the auxiliary information is generated according to the SCI.

[0080] Optionally, the information transmission device, wherein the auxiliary information comprises at least one of the following:

[0081] time domain resource indication information;

[0082] data size.

[0083] Optionally, the information transmission device, wherein the time domain resource indication information is determined according to the resource reservation information carried in the SCI.

[0084] Optionally, the information transmission device, wherein the data size is determined according to the resource reservation information carried in the SCI and modulation and coding strategy (MCS) carried in the SCI.

[0085] Optionally, the information transmission device, wherein the processor is further configured to:

[0086] receive the direct communication interface configuration resource sent by the second device according to the auxiliary information;

[0087] forward the direct communication interface data sent by the first terminal through the direct communication interface configuration resource.

[0088] Embodiments of the present application also provide an information transmission device, which is a second device, comprising a memory, a transceiver and a processor:

[0089] the memory is configured to store a computer program; the transceiver is configured to transceive data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0090] receive auxiliary information sent by a first device; wherein the auxiliary information is generated by the first device according to the direct communication interface control information (SCI) sent by a first terminal.

[0091] Optionally, the information transmission device, wherein the processor is further configured to:

[0092] determine the direct communication interface configuration resource of the first device according to the auxiliary information;

[0093] send the direct communication interface configuration resource to the first device.

[0094] Embodiments of the present application also provide an information transmission device, which is executed by a first device, comprising:

[0095] The first receiving unit is configured to receive the SCI sent by the first terminal.

[0096] The first sending unit is configured to send the assistance information to the second device, wherein the assistance information is generated according to the SCI.

[0097] The embodiments of the present application further provide an information transmission device, wherein the device is executed by the second device, and the device comprises:

[0098] The second receiving unit is configured to receive the assistance information sent by the first device, wherein the assistance information is generated by the first device according to the SCI sent by the first terminal.

[0099] The embodiments of the present application further provide a processor readable storage medium, wherein the processor readable storage medium stores a computer program, and the computer program is used for making the processor execute the information transmission method according to any one of the above.

[0100] The above technical solutions of the present application have the following beneficial effects:

[0101] In the above solution, by using the information transmission method according to the embodiments of the present application, after the first device receives the SCI sent by the first terminal, the first device can generate the assistance information according to the SCI and send the assistance information to the second device, so that the second device can determine the time when the data reaches the first device according to the indication in the assistance information, and the resources required for the data transmission can be allocated in advance, thereby reducing the time required for the relay UE data forwarding and reducing the end-to-end transmission delay of the service. BRIEF DESCRIPTION OF DRAWINGS

[0102] Figure 1 FIG. 1 is a structural schematic diagram of an application system according to an embodiment of the information transmission method according to the embodiments of the present application;

[0103] Figure 2 FIG. 2 is a structural schematic diagram of an application system according to another embodiment of the information transmission method according to the embodiments of the present application;

[0104] Figure 3 FIG. 3 is a flowchart of the information transmission method according to one of the embodiments of the present application;

[0105] Figure 4 FIG. 4 is a flowchart of the information transmission method according to the first embodiment of the present application;

[0106] Figure 5 FIG. 5 is a flowchart of the information transmission method according to the second embodiment of the present application;

[0107] Figure 6Flowchart of the third implementation of the information transmission method according to the embodiments of the present application;

[0108] Figure 7 Flowchart of the information transmission method according to another embodiment of the present application;

[0109] Figure 8 Structure diagram of the information transmission device according to one of the embodiments of the present application;

[0110] Figure 9 Structure diagram of the information transmission device according to another embodiment of the present application;

[0111] Figure 10 Structure diagram of the information transmission device according to one of the embodiments of the present application;

[0112] Figure 11 Structure diagram of the information transmission device according to another embodiment of the present application. DETAILED DESCRIPTION

[0113] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0114] As Figure 1 Structure diagram of one of the application systems using the information transmission method according to the embodiments of the present application; in this implementation, the system uses U2N relay, including a remote terminal 10, a relay terminal 20 and a network side device 30, wherein the direct communication interface (also called Sidelink interface or PC5 interface) is used between the remote terminal 10 and the relay terminal 20, the Uu interface is used between the relay terminal 20 and the network side device 30, and the link between the relay terminal 20 and the network side device 30 can be called backhaul link (Backhaul link) for the remote terminal 10.

[0115] As Figure 2Fig. 2 shows a schematic diagram of another embodiment of an application system using the information transmission method described in the embodiments of the present application; in this embodiment, the system uses a user-to-user relay (U2U relay) and includes a first remote terminal 11, a relay terminal 20, and a second remote terminal 12. The first remote terminal 11 and the relay terminal 20 use a direct communication interface (also referred to as a Sidelink interface or a PC5 interface), and the link between the relay terminal 20 and the second remote terminal 12 can be referred to as a backhaul link with respect to the first remote terminal 11.

[0116] In the prior art, in the process of data transmission between a remote terminal and its communication peer terminal using a relay, the relay terminal needs to request resources through an SR / BSR process after receiving the data sent by the remote terminal. The SR and BSR processes both need a duration of at least one RTT, and if the retransmission of the SR / BSR is considered, the time needed is even longer. Therefore, the end-to-end delay requirement of a delay-sensitive service cannot be met. To solve this technical problem, the embodiments of the present application provide an information transmission method. After a first device receives SCI sent by a first terminal (e.g., a remote terminal), the first device sends auxiliary information generated according to the SCI to a second device, so that the second device can determine the time when data arrives at the first device according to the auxiliary information, and the resources needed for the data transmission are allocated in advance. The second device can be assisted to reasonably allocate resources, so that the resources available for data forwarding are ensured when the data transmitted by the first terminal arrives at the first device. In this way, the end-to-end transmission delay of the entire relay system is reduced by reducing the delay of relay forwarding.

[0117] In the embodiments of the present application, one embodiment, as shown in Fig. 1, provides an information transmission method, which is performed by a first device and includes the following steps. Figure 3

[0118] S310, receiving direct communication interface control information (SCI) sent by a first terminal;

[0119] S320, sending the auxiliary information to a second device, wherein the auxiliary information is generated according to the SCI.

[0120] The first device is a relay device, which can be a terminal with a relay function and is used to forward data sent by the first terminal to a network side device or a second terminal.

[0121] ​By using the information transmission method described in the embodiments of the present application, after the first device receives the SCI sent by the first terminal, the first device can generate the auxiliary information according to the SCI and send the auxiliary information to the second device, so that the second device can determine the time when the data reaches the first device according to the indication in the auxiliary information, and allocate the resources required for data transmission to the first device in advance, thereby reducing the time required for the relay terminal to forward data and reducing the end-to-end transmission delay of the service.

[0122] Optionally, the auxiliary information is generated according to the SCI and is used to assist the second device to perform resource configuration.

[0123] Optionally, the second device is one of the following:

[0124] A network device accessed by the first device through a Uu interface;

[0125] A device responsible for scheduling resources of a direct communication interface between the first device and the second terminal;

[0126] The second terminal is a communication peer of the first terminal that performs relay communication through the first device.

[0127] In the embodiments of the present application, the method further includes:

[0128] After receiving the SCI sent by the first terminal, if the SCI includes resource reservation information, the auxiliary information is generated according to the SCI.

[0129] In this embodiment, after the first device (such as a relay terminal) receives the SCI sent by the first terminal, if the SCI includes resource reservation information, the first device generates auxiliary information according to the SCI and sends the auxiliary information to the second device.

[0130] Optionally, the resource reservation information includes at least one of the following:

[0131] Resource reservation information of direct communication interface initial transmission resources;

[0132] Resource reservation information of direct communication interface retransmission resources.

[0133] Optionally, the resource reservation information indicates the corresponding time domain resource position, frequency domain resource position, modulation and coding scheme (MCS), and the like of the direct communication interface initial transmission resources and / or retransmission resources.

[0134] The information transmission method in the embodiments of the present application, in step S310, the received SCI sent by the first terminal can be the first-stage SCI sent by the first terminal, or the second-stage SCI sent by the second terminal; specifically, after receiving the first-stage SCI sent by the first terminal or receiving the second-stage SCI sent by the first terminal, the first device sends the auxiliary information to the second device.

[0135] Optionally, the first-stage SCI or the second-stage SCI includes resource reservation information, and after receiving the SCI including the resource reservation information, the auxiliary information is generated according to the SCI.

[0136] The information transmission method in the embodiments of the present application, in step S320, when the auxiliary information is sent to the second device, the auxiliary information includes at least one of the following:

[0137] time domain resource indication information;

[0138] data size.

[0139] Optionally, the time domain resource indication information is determined according to the resource reservation information carried in the SCI; and the data size is determined according to the resource reservation information carried in the SCI and the modulation and coding strategy (MCS) carried in the SCI.

[0140] In one embodiment, optionally, the time domain resource indication information is used to indicate the time domain resource information corresponding to the initial transmission and / or retransmission.

[0141] Specifically, when the auxiliary information is generated according to the SCI, the specific position of the time domain resource corresponding to the initial transmission and / or retransmission resource of the direct communication interface scheduled by the SCI is determined according to the resource reservation information in the SCI, and the specific position of the time domain resource is taken as the time domain resource indication information.

[0142] Optionally, the time domain resource indication information indicates the time domain resource information corresponding to the retransmission in the following manner:

[0143] indicating the specific time domain resource corresponding to each retransmission.

[0144] In another embodiment, optionally, the time domain resource indication information indicates the time domain resource information corresponding to the initial transmission in the following manner:

[0145] indicating the start position and period of the time domain resource corresponding to the initial transmission;

[0146] indicating the start position, period and repetition number of the time domain resource corresponding to the initial transmission;

[0147] indicating the start position, period and resource end time of the time domain resource corresponding to the initial transmission.

[0148] Optionally, in the embodiment of the application, in step S320, when the first device sends the assistance information to the second device, the assistance information is sent through existing Uu interface RRC signaling, for example, the assistance information can be sent through terminal assistance information UEAssistantInformation or sidelink terminal information SidelinkUEInformation; in another implementation, the assistance information can be sent through specific Uu interface RRC signaling, for example, a new Uu interface RRC signaling is introduced to send the assistance information.

[0149] Optionally, in the embodiment of the information transmission method of the application, after the assistance information is sent to the second device in step S320, the method further comprises:

[0150] receiving a direct communication interface configuration resource sent by the second device according to the assistance information;

[0151] forwarding direct communication interface data sent by the first terminal through the direct communication interface configuration resource.

[0152] Optionally, in the case where the second device is a network device accessed by the first device through a Uu interface, the direct communication interface configuration resource comprises at least one of the following:

[0153] a first type of preconfigured grant of the Uu interface configured for the first device;

[0154] a second type of preconfigured grant of the Uu interface configured for the first device;

[0155] a dynamically scheduled resource of the Uu interface configured for the first device.

[0156] Optionally, the method further comprises:

[0157] forwarding data sent by the first terminal through a direct communication interface to the second device through preconfigured grant information or a dynamically scheduled resource of the Uu interface configured for the first device.

[0158] In the embodiment, in the case where the second device is a network device accessed by the first device through a Uu interface, after the second device receives the assistance information, the second device performs at least one of the following operations:

[0159] configuring type 1 CG (first type of preconfigured grant) of the Uu interface for the first device according to the assistance information;

[0160] configuring type 2 CG (second type of preconfigured grant) of the Uu interface for the first device according to the assistance information;

[0161] dynamically schedule the first device according to the assistance information.

[0162] In another implementation of the information transmission method, in a case where the second device is a device responsible for scheduling resources of a direct communication interface between the first device and the second terminal, the direct communication interface configuration resource includes at least one of the following:

[0163] a first type of preconfigured grant configured for the direct communication interface between the first device and the second terminal;

[0164] a second type of preconfigured grant configured for the direct communication interface between the first device and the second terminal;

[0165] a dynamically scheduled resource configured for the direct communication interface between the first device and the second terminal.

[0166] In this implementation, optionally, the information transmission method further includes:

[0167] forwarding, to the second terminal, data sent by the first terminal through the direct communication interface according to the direct communication interface configuration resource.

[0168] In this implementation, in a case where the second device is a device responsible for scheduling resources of a direct communication interface between the first device and the second terminal, after the second device receives the assistance information, the second device performs at least one of the following operations:

[0169] configuring, according to the assistance information, a type 1 CG (first type of preconfigured grant) for the direct communication interface between the first device and the second terminal;

[0170] configuring, according to the assistance information, a type 2 CG (second type of preconfigured grant) for the direct communication interface between the first device and the second terminal;

[0171] dynamically scheduling, according to the assistance information, the direct communication interface between the first device and the second terminal.

[0172] In this implementation, optionally, the device responsible for scheduling resources of a direct communication interface between the first device and the second terminal is the second terminal, or a third terminal different from the first terminal and the second terminal.

[0173] With the embodiment, the second device is a device responsible for scheduling the direct communication interface resource between the first device and the second terminal, and when the second device is the second terminal or the third terminal, it forms a U2U relay, the first device (i.e., a relay terminal) sends the assistance information generated according to the SCI to the second terminal or the third terminal, and the second terminal or the third terminal configures the direct communication interface configuration resource between the first device and the second terminal.

[0174] The information transmission method described in the embodiments of the present application is exemplarily illustrated in the following in combination with specific embodiments.

[0175] Embodiment One

[0176] In this embodiment, the information transmission method is applied to a U2N relay, and as shown in FIG. 1, the information transmission method described in the embodiment includes the following steps: Figure 4

[0177] S410, the remote terminal (i.e., the first terminal) performs direct communication interface resource allocation;

[0178] For an L2 U2N relay, the remote terminal only supports resource allocation mode 2 (i.e., Mode 2) in the direct communication interface. Specifically, the remote terminal can directly select the direct communication resource from the resource pool corresponding to the direct communication interface.

[0179] S420, the remote terminal sends the SCI to the relay terminal (i.e., the first device);

[0180] In step S410, after the remote terminal performs direct communication interface resource allocation, it can determine the content to be filled in the SCI sent by the direct communication interface. Then, the remote terminal can send the SCI to the relay terminal. In the embodiments of the present application, the SCI sent by the remote terminal to the relay terminal can include resource reservation information; optionally, the resource reservation information includes resource reservation information of the initial transmission resource and / or resource reservation information of the retransmission resource. The resource reservation information indicates the specific time domain resource position, frequency domain resource position, MCS, etc. corresponding to the initial transmission and retransmission.

[0181] S430, the relay terminal sends the assistance information to the network device (second device);

[0182] In the embodiments of the present application, the relay terminal sends the assistance information to the network device accessed by the first device through the Uu interface, i.e., the second device is the network device accessed by the first device through the Uu interface.

[0183] ​In this embodiment, the relay terminal receives the SCI from the remote terminal, and if the SCI contains resource reservation information, the relay terminal triggers the sending of the assistance information to the network device.

[0184] Optionally, the SCI received by the relay terminal from the remote terminal can be a second-stage SCI (2nd-stage SCI), that is, after the relay terminal receives the second-stage SCI from the remote terminal, if the first-stage SCI received before and / or the second-stage SCI currently received contain resource reservation information, the relay terminal triggers the sending of the assistance information to the network device.

[0185] Optionally, the assistance information contains one or more of the following contents:

[0186] Time domain resource indication information;

[0187] Data size.

[0188] In this embodiment, the time domain resource indication information can be embodied as one of the following:

[0189] According to the resource reservation information in the SCI, the specific position of the time domain resource corresponding to the direct communication interface initial transmission and / or retransmission resource scheduled by the SCI is determined, and the specific position of the time domain resource is taken as the time domain resource position information.

[0190] For example, the initial transmission time indicated by the resource reservation information in the SCI includes T1, T4 and T5, and the retransmission time includes T1, T2 and T3. In this embodiment, the specific position of the time domain resource indicated in the time domain resource indication information includes T1, T2, T3, T4 and T5.

[0191] Specifically, the time domain resource indication information is used to indicate the time domain resource information corresponding to the initial transmission and / or retransmission:

[0192] The time domain resource indication information indicating the time domain resource information corresponding to the retransmission includes indicating the specific time domain resource corresponding to each retransmission;

[0193] For the time domain resource information corresponding to the initial transmission, one of the following modes is used for indication:

[0194] indicating the start position and period of the time domain resource corresponding to the initial transmission;

[0195] indicating the start position, period and repetition number of the time domain resource corresponding to the initial transmission;

[0196] indicating the start position, period and resource end time of the time domain resource corresponding to the initial transmission.

[0197] For example, for the time domain resource information corresponding to the initial transmission, the specific position T1 of the time domain resource, the period P1 and the number of repetitions 5 can be indicated. For the time domain resource information corresponding to the retransmission, the specific retransmission time T2 and T3 can be indicated.

[0198] In the embodiments of the present application, the data amount size in the assistance information is determined according to the resource reservation information carried in the SCI and the modulation and coding strategy (MCS) carried in the SCI.

[0199] S440, the network device performs Uu interface resource allocation;

[0200] The network device sends Uu interface scheduling signaling to the relay terminal after receiving the assistance information sent by the relay terminal. Specifically, at least one of the following scheduling modes can be used:

[0201] Mode one: the network device configures type 1 CG (first type of preconfigured grant) for the relay terminal on the Uu interface according to the assistance information;

[0202] The scheduling mode is mainly applicable to the case where the SCI only contains initial transmission resource reservation information, or to the case where the SCI contains both initial transmission resource reservation information and retransmission resource reservation information, and the time domain resource positions corresponding to the initial transmission and the retransmission are relatively regular (such as periodic occurrence). Moreover, the network device performs Type 1 CG configuration to ensure that the relay terminal has UL available resources on the Uu interface after receiving the direct communication interface data from the remote terminal, thereby reducing the delay of Uu interface UL transmission.

[0203] Mode two, the network device configures type 2 CG (second type of preconfigured grant) for the relay terminal on the Uu interface according to the assistance information;

[0204] The scheduling mode is mainly applicable to the case where the SCI only contains initial transmission resource reservation information, or to the case where the SCI contains both initial transmission resource reservation information and retransmission resource reservation information, and the time domain resource positions corresponding to the initial transmission and the retransmission are relatively regular (such as periodic occurrence). Moreover, the network device performs Type 2 CG configuration to ensure that the relay terminal has UL available resources on the Uu interface after receiving the direct communication interface data from the remote terminal, thereby reducing the delay of Uu interface UL transmission.

[0205] Mode three, the network device dynamically schedules the relay terminal according to the assistance information.

[0206] The scheduling mode has universality, and the base station only needs to ensure that the relay terminal has UL available resources on the Uu interface after receiving the direct communication interface data from the remote terminal, thereby reducing the delay of Uu interface UL transmission.

[0207] S450, the relay terminal forwards the direct communication interface data sent by the first terminal through the received allocated resource.

[0208] Specifically, after the relay terminal receives the direct communication interface data from the remote terminal, the relay terminal forwards the received direct communication interface data to the network device by using the Uu interface UL resource obtained in step S440.

[0209] With this embodiment, after the relay terminal receives the SCI sent by the remote terminal, the relay terminal can generate the assistance information according to the resource reservation information in the SCI, and send the assistance information to the network device, so that the network device performs Uu interface resource allocation according to the assistance information, to assist the network device to determine the resource used by the relay terminal for forwarding data, so as to reduce the time delay of the relay terminal forwarding the data sent by the remote terminal.

[0210] Embodiment two

[0211] In this embodiment, the information transmission method is applied to a U2U relay, and the information transmission method includes the following steps, as shown in the figure. Figure 5 The information transmission method includes the following steps.

[0212] S510, a first remote terminal (also referred to as a first terminal) performs direct communication interface resource allocation;

[0213] For L2 U2U relay, if the first remote terminal only supports resource allocation mode 2 (i.e. Mode 2) in the direct communication interface, the first remote terminal can directly select the direct communication resource from the available resource pool of the direct communication interface.

[0214] S520, the first remote terminal sends SCI to a relay terminal (also referred to as a first device);

[0215] In step S510, after the first remote terminal performs direct communication interface resource allocation, the first remote terminal can determine the content to be filled in the SCI sent by the direct communication interface. Then, the first remote terminal can send the SCI to the relay terminal. In the embodiment of the present application, the SCI sent by the first remote terminal to the relay terminal can include resource reservation information; optionally, the resource reservation information includes resource reservation information of initial transmission resource and / or resource reservation information of retransmission resource. The resource reservation information indicates the specific time domain resource position, frequency domain resource position, MCS, etc. corresponding to the initial transmission and retransmission.

[0216] S530, the relay terminal sends assistance information to a network device (second device);

[0217] In the embodiment of the present application, if the relay terminal is in the network, the relay terminal receives the SCI sent by the first remote terminal, and if the SCI includes resource reservation information, the relay terminal sends the assistance information to the target device (second device) responsible for scheduling the direct communication interface resource between the relay terminal and the second remote terminal (i.e., the second terminal); in the embodiment of the present application, the target device receiving the assistance information sent by the relay terminal is the network device serving the relay terminal. The second remote terminal is the communication peer of the first remote terminal for relay communication through the relay terminal.

[0218] In this implementation, the relay terminal receives the SCI from the remote terminal, and if the SCI includes resource reservation information, the relay terminal triggers the sending of the assistance information to the network device.

[0219] Optionally, the SCI received by the relay terminal from the remote terminal can be a second-stage SCI (2nd-stage SCI), i.e., after the relay terminal receives the second-stage SCI from the remote terminal, the first-stage SCI received before and / or the second-stage SCI currently received include resource reservation information, the relay terminal triggers the sending of the assistance information to the network device.

[0220] Optionally, the assistance information includes one or more of the following contents:

[0221] Time domain resource indication information;

[0222] Data size.

[0223] In the embodiment of the present application, the time domain resource indication information can be embodied as one of the following:

[0224] According to the specific position of the time domain resource corresponding to the direct communication interface initial transmission and / or retransmission resource scheduled by the SCI according to the resource reservation information in the SCI, the specific position of the time domain resource is taken as the time domain resource position information.

[0225] For example, the initial transmission time indicated by the resource reservation information in the SCI includes T1, T4 and T5, and the retransmission time includes T1, T2 and T3, and in this implementation, the specific position of the time domain resource indicated in the time domain resource indication information includes T1, T2, T3, T4 and T5.

[0226] Specifically, the time domain resource indication information is used to indicate the time domain resource information corresponding to the initial transmission and / or retransmission:

[0227] The time domain resource indication information indicates the time domain resource information corresponding to the retransmission, including: indicating the specific time domain resource corresponding to each retransmission;

[0228] For the time domain resource information corresponding to the initial transmission, one of the following ways is used to indicate:

[0229] indicate the start position and the period of the time domain resource corresponding to the initial transmission;

[0230] indicate the start position, the period and the repetition number of the time domain resource corresponding to the initial transmission;

[0231] indicate the start position, the period and the end time of the resource of the time domain resource corresponding to the initial transmission.

[0232] For example, for the time domain resource information corresponding to the initial transmission, the specific position T1, the period P1 and the repetition number 5 of the time domain resource can be indicated. For the time domain resource information corresponding to the retransmission, the specific retransmission time T2 and T3 can be indicated.

[0233] In the embodiments of the application, the data size in the assistance information is determined according to the resource reservation information carried in the SCI and the modulation and coding strategy (MCS) carried in the SCI.

[0234] S540, performing allocation of a direct communication interface resource between the relay terminal and the second remote terminal;

[0235] The network device receives the assistance information sent by the relay terminal, and sends scheduling signaling for allocation of a direct communication interface resource between the relay terminal and the second remote terminal to the relay terminal. Specifically, at least one of the following scheduling modes can be used: Mode one: according to the assistance information, the network device configures type 1 CG (first type of preconfigured grant) for the direct communication interface between the relay terminal and the second remote terminal;

[0236] The scheduling mode is mainly applicable to the case where the SCI only contains initial transmission resource reservation information, or the case where the SCI contains both initial transmission resource reservation information and retransmission resource reservation information, and the time domain resource positions corresponding to the initial transmission and the retransmission are relatively regular (such as periodicity). In addition, the network device performs Type 1 CG configuration to ensure that the relay terminal has available resources on the direct communication interface between the relay terminal and the second remote terminal after receiving the direct communication interface data from the first remote terminal, thereby reducing the delay of Uu interface UL transmission.

[0237] Mode two: according to the assistance information, the network device configures type 2 CG (second type of preconfigured grant) for the direct communication interface between the relay terminal and the second remote terminal;

[0238] In the same way as mode one, the scheduling mode is mainly applicable to the case where the SCI only contains initial transmission resource reservation information, or to the case where the SCI contains both initial transmission resource reservation information and retransmission resource reservation information, and the time domain resource positions corresponding to the initial transmission and retransmission are relatively regular (for example, periodically appear), and the network device performing Type 2 CG configuration needs to ensure that there is available resource on the direct communication interface between the relay terminal and the second remote terminal after the relay terminal receives the direct communication interface data from the remote terminal, so as to reduce the delay of Uu interface UL transmission.

[0239] Mode three, according to the auxiliary information, the dynamic scheduling resource configured for the direct communication interface between the relay terminal and the second remote terminal.

[0240] The scheduling mode has universality, and the network device needs to ensure that there is available resource on the direct communication interface between the relay terminal and the second remote terminal after the relay terminal receives the direct communication interface data from the first remote terminal when performing resource scheduling, so as to reduce the delay of Uu interface UL transmission.

[0241] S550, the relay terminal forwards the direct communication interface data sent by the first remote terminal to the second remote terminal through the received allocation resource;

[0242] In this step, the relay terminal forwards the received direct communication interface data to the second remote terminal according to the resource allocated in step S540 after receiving the direct communication interface data from the first remote terminal. In this embodiment, after receiving the SCI sent by the first remote terminal, the relay terminal can generate auxiliary information according to the resource reservation information in the SCI, and send the auxiliary information to the target device (second device) responsible for scheduling the direct communication interface resource between the relay terminal and the second remote terminal (i.e. the second terminal), so that the second device allocates the direct communication interface resource between the relay terminal and the second remote terminal according to the auxiliary information, so as to assist the network device in determining the resource used by the relay terminal for forwarding data through the auxiliary information, thereby reducing the delay of the relay terminal in forwarding the data sent by the remote terminal.

[0243] Embodiment three

[0244] In this embodiment, the information transmission method is applied to U2U relay, and the information transmission method includes the following steps, as shown in FIG. 6. Figure 6

[0245] S610, the first remote terminal (i.e. the first terminal) performs direct communication interface resource allocation;

[0246] ​For the L2 U2U relay, if the first remote terminal only supports resource allocation mode 2 (i.e., Mode 2) on the direct communication interface, the first remote terminal can directly select the direct communication resource from the available resource pool of the direct communication interface.

[0247] S620, the first remote terminal sends the SCI to the relay terminal (i.e., the first device);

[0248] In step S610, after the first remote terminal performs resource allocation on the direct communication interface, the first remote terminal can determine the content to be filled in the SCI sent on the direct communication interface. Then, the first remote terminal can send the SCI to the relay terminal. In the SCI sent by the first remote terminal to the relay terminal, the resource reservation information can be included. Optionally, the resource reservation information includes resource reservation information of the initial transmission resource and / or resource reservation information of the retransmission resource. The resource reservation information indicates the specific time domain resource position, frequency domain resource position, MCS, etc. corresponding to the initial transmission and retransmission.

[0249] S630, the relay terminal sends the assistance information to the third remote terminal;

[0250] In the embodiment of the application, the relay terminal receives the SCI sent by the first remote terminal, and if the SCI includes the resource reservation information, the relay terminal sends the assistance information to the target device. In the embodiment of the application, the target device receiving the assistance information is a device responsible for scheduling the resources of the direct communication interface between the relay terminal and the second remote terminal (i.e., the second terminal). Optionally, the device can be the third remote terminal, which can be the same as or different from the second remote terminal. The second remote terminal is the communication opposite end of the first remote terminal for relay communication through the relay terminal.

[0251] In this implementation, the relay terminal receives the SCI from the remote terminal, and if the SCI includes the resource reservation information, the relay terminal triggers to send the assistance information to the network device.

[0252] Optionally, the SCI received by the relay terminal from the remote terminal can be the second-stage SCI (2nd-stage SCI). That is, after the relay terminal receives the second-stage SCI from the remote terminal, if the first-stage SCI received before and / or the second-stage SCI currently received include the resource reservation information, the relay terminal triggers to send the assistance information to the network device.

[0253] Optionally, the assistance information includes one or more of the following contents:

[0254] Time domain resource indication information;

[0255] Data size.

[0256] In an embodiment of the present application, the time domain resource indication information can be embodied as one of the following:

[0257] According to the specific position of the time domain resource corresponding to the direct communication interface initial transmission and / or retransmission resource scheduled by the SCI determined by the resource reservation information in the SCI, the specific position of the time domain resource is taken as the time domain resource position information.

[0258] For example, the initial transmission time indicated by the resource reservation information in the SCI includes T1, T4 and T5, and the retransmission time includes T1, T2 and T3. In this embodiment, the specific position of the time domain resource indicated in the time domain resource indication information includes T1, T2, T3, T4 and T5.

[0259] Specifically, the time domain resource indication information is used to indicate the time domain resource information corresponding to the initial transmission and / or retransmission.

[0260] The time domain resource indication information indicates the time domain resource information corresponding to the retransmission, including indicating the specific time domain resource corresponding to each retransmission.

[0261] The time domain resource information corresponding to the initial transmission is indicated in one of the following ways:

[0262] The start position and period of the time domain resource corresponding to the initial transmission are indicated.

[0263] The start position, period and repetition number of the time domain resource corresponding to the initial transmission are indicated.

[0264] The start position, period and resource end time of the time domain resource corresponding to the initial transmission are indicated.

[0265] For example, the time domain resource information corresponding to the initial transmission can indicate the specific position T1 of the time domain resource, the period P1 and the repetition number 5. The time domain resource information corresponding to the retransmission can indicate the specific retransmission time T2 and T3.

[0266] In an embodiment of the present application, the data size in the auxiliary information is determined according to the resource reservation information carried in the SCI and the modulation and coding strategy MCS carried in the SCI.

[0267] S640, the allocation of the direct communication interface resource between the relay terminal and the second remote terminal is performed.

[0268] The third remote terminal sends scheduling signaling for allocation of a direct communication interface resource between the relay terminal and the second remote terminal to the relay terminal after receiving the assistance information sent by the relay terminal. Specifically, at least one of the following scheduling modes can be used: Mode one: according to the assistance information, the third remote terminal configures type 1 CG (first type of preconfigured grant) for the direct communication interface between the relay terminal and the second remote terminal;

[0269] The scheduling mode is mainly applicable to a case where only initial transmission resource reservation information is included in the SCI, or a case where both initial transmission resource reservation information and retransmission resource reservation information are included in the SCI, and the time domain resource positions corresponding to the initial transmission and the retransmission are relatively regular (for example, periodically appear), and the network device performs Type 1 CG configuration to ensure that the relay terminal has available resources on the direct communication interface between the relay terminal and the second remote terminal after receiving the direct communication interface data from the first remote terminal, thereby reducing the delay of Uu interface UL transmission.

[0270] Mode two: according to the assistance information, the third remote terminal configures type 2 CG (second type of preconfigured grant) for the direct communication interface between the relay terminal and the second remote terminal;

[0271] The scheduling mode is mainly applicable to a case where only initial transmission resource reservation information is included in the SCI, or a case where both initial transmission resource reservation information and retransmission resource reservation information are included in the SCI, and the time domain resource positions corresponding to the initial transmission and the retransmission are relatively regular (for example, periodically appear), and the third remote terminal performs Type 2 CG configuration to ensure that the relay terminal has available resources on the direct communication interface between the relay terminal and the second remote terminal after receiving the direct communication interface data from the remote terminal, thereby reducing the delay of Uu interface UL transmission.

[0272] Mode three, according to the assistance information, a dynamic scheduling resource is configured for the direct communication interface between the relay terminal and the second remote terminal.

[0273] The scheduling mode has universality, and the third remote terminal needs to ensure that the relay terminal has available resources on the direct communication interface between the relay terminal and the second remote terminal after receiving the direct communication interface data from the first remote terminal when performing resource scheduling, thereby reducing the delay of Uu interface UL transmission.

[0274] S650, the relay terminal forwards the direct communication interface data sent by the first remote terminal to the second remote terminal through the received allocated resource;

[0275] In this step, after receiving the direct communication interface data from the first remote terminal, the relay terminal forwards the received direct communication interface data to the second remote terminal according to the resources allocated in step S640; in the embodiment of the application, the third remote terminal and the second remote terminal are the same terminal, and the relay terminal forwards the received direct communication interface data to the third remote terminal according to the resources allocated in step S640.

[0276] With this embodiment, after receiving the SCI sent by the first remote terminal, the relay terminal can generate the auxiliary information according to the resource reservation information in the SCI, and send the auxiliary information to the third remote device (second device) responsible for scheduling the direct communication interface resources between the relay terminal and the second remote terminal (i.e., the second terminal), so that the third remote device allocates the direct communication interface resources between the relay terminal and the second remote terminal according to the auxiliary information, to assist the network device in determining the resources used by the relay terminal for forwarding data, so as to reduce the delay of the relay terminal in forwarding the data sent by the remote terminal.

[0277] The embodiment of the application also provides an information transmission method, which is executed by a second device, as shown in the following. Figure 7 The method comprises the following steps.

[0278] S710, receiving auxiliary information sent by a first device; wherein the auxiliary information is generated by the first device according to direct communication interface control information (SCI) sent by a first terminal.

[0279] With the information transmission method in this embodiment, after the first device receives the SCI sent by the first terminal (such as a remote terminal), the auxiliary information generated according to the SCI is sent to the second device to assist the second device in reasonably allocating resources, so that there are resources available for data forwarding when the data of the first terminal reaches the first device, thereby reducing the end-to-end transmission delay of the entire relay system by reducing the relay forwarding delay

[0280] Optionally, the information transmission method, wherein the second device is one of the following:

[0281] a network device accessed by the first device through a Uu interface;

[0282] a device responsible for scheduling the direct communication interface resources between the first device and a second terminal;

[0283] wherein the second terminal is a communication peer of the first terminal for relay communication through the first device.

[0284] Optionally, the information transmission method, wherein the auxiliary information comprises at least one of the following:

[0285] time domain resource indication information;

[0286] data size.

[0287] Optionally, the information transmission method, wherein the time domain resource indication information is determined according to resource reservation information carried in the SCI.

[0288] Optionally, the information transmission method, wherein the data size is determined according to resource reservation information carried in the SCI and modulation and coding strategy (MCS) carried in the SCI.

[0289] Optionally, the information transmission method, wherein the time domain resource indication information is used to indicate time domain resource information corresponding to initial transmission and / or retransmission.

[0290] Optionally, the information transmission method, wherein the time domain resource indication information indicates time domain resource information corresponding to retransmission, including:

[0291] indicating specific time domain resources corresponding to each retransmission.

[0292] Optionally, the information transmission method, wherein the time domain resource indication information indicates time domain resource information corresponding to initial transmission, including one of:

[0293] indicating a starting position and a period of time domain resources corresponding to initial transmission;

[0294] indicating a starting position, a period and a repetition number of time domain resources corresponding to initial transmission;

[0295] indicating a starting position, a period and a resource end time of time domain resources corresponding to initial transmission.

[0296] Optionally, the information transmission method, wherein the method further includes:

[0297] determining a direct communication interface configuration resource of the first device according to the auxiliary information;

[0298] sending the direct communication interface configuration resource to the first device.

[0299] Optionally, the information transmission method, wherein in the case that the second device is a network device accessed by a first device through a Uu interface, the direct communication interface configuration resource includes at least one of:

[0300] a first type of preconfigured grant of the Uu interface configured for the first device;

[0301] a second type of preconfigured grant of the Uu interface configured for the first device;

[0302] a dynamic scheduling resource of a Uu interface configured for the first device;

[0303] wherein a time domain location of the resource indicated in the preconfigured grant or the dynamic scheduling resource matches a time domain location of the resource indicated in the assistance information.

[0304] Optionally, the information transmission method, wherein, in a case where the second device is a device responsible for scheduling a resource of a direct communication interface between the first device and a second terminal, the direct communication interface configuration resource comprises at least one of the following:

[0305] a first type of preconfigured grant configured for a direct communication interface between the first device and the second terminal; wherein the second terminal is a communication peer of the first terminal relaying communication through the first device;

[0306] a second type of preconfigured grant configured for a direct communication interface between the first device and the second terminal;

[0307] a dynamic scheduling resource configured for a direct communication interface between the first device and the second terminal.

[0308] Optionally, the information transmission method, wherein the device responsible for scheduling a resource of a direct communication interface between the first device and the second terminal is the second terminal, or a third terminal different from the first terminal and the second terminal.

[0309] Embodiments of the present application also provide an information transmission device, the information transmission device being a first device, as shown in the following Figure 8 The information transmission device comprises a memory 810, a transceiver 820 and a processor 830:

[0310] The memory 810 is configured to store a computer program; the transceiver 820 is configured to transceive data under control of the processor 830; and the processor 830 is configured to read the computer program in the memory and perform the following operations:

[0311] receive direct communication interface control information (SCI) sent by a first terminal;

[0312] send the assistance information to a second device, wherein the assistance information is generated according to the SCI.

[0313] Optionally, the information transmission device, wherein the processor 830 is further configured to, after receiving the SCI sent by the first terminal, if the SCI comprises resource reservation information, generate the assistance information according to the SCI.

[0314] Optionally, the information transmission device, wherein the resource reservation information comprises at least one of:

[0315] resource reservation information of an initial transmission resource of the direct communication interface;

[0316] resource reservation information of a retransmission resource of the direct communication interface.

[0317] Optionally, the information transmission device, wherein the second device is one of:

[0318] a network device accessed by the first device through a Uu interface;

[0319] a device responsible for scheduling a direct communication interface resource between the first device and a second terminal;

[0320] wherein the second terminal is a communication peer of the first terminal for relaying communication through the first device.

[0321] Optionally, the information transmission device, wherein the assistance information comprises at least one of:

[0322] time domain resource indication information;

[0323] a data size.

[0324] Optionally, the information transmission device, wherein the time domain resource indication information is determined according to resource reservation information carried in the SCI.

[0325] Optionally, the information transmission device, wherein the data size is determined according to resource reservation information carried in the SCI and modulation and coding strategy (MCS) carried in the SCI.

[0326] Optionally, the information transmission device, wherein the time domain resource indication information is used to indicate time domain resource information corresponding to initial transmission and / or retransmission.

[0327] Optionally, the information transmission device, wherein the time domain resource indication information indicates time domain resource information corresponding to retransmission, comprising:

[0328] indicating specific time domain resources corresponding to each retransmission.

[0329] Optionally, the information transmission device, wherein the time domain resource indication information indicates time domain resource information corresponding to initial transmission, comprising one of:

[0330] indicating a starting position and a period of time domain resources corresponding to initial transmission;

[0331] indicating a starting position, a period and a repetition number of time domain resources corresponding to initial transmission;

[0332] indicate a starting position, a period, and a resource ending moment of time domain resources corresponding to initial transmission.

[0333] Optionally, the information transmission device, wherein the SCI is a first-stage SCI or a second-stage SCI.

[0334] Optionally, the information transmission device, wherein the processor 830 is further configured to:

[0335] receive a direct communication interface configuration resource sent by the second device according to the assistance information;

[0336] forward direct communication interface data sent by the first terminal through the direct communication interface configuration resource.

[0337] Optionally, the information transmission device, wherein in a case where the second device is a network device accessed by the first device through a Uu interface, the direct communication interface configuration resource includes at least one of:

[0338] a first type of preconfigured grant of the Uu interface configured for the first device;

[0339] a second type of preconfigured grant of the Uu interface configured for the first device;

[0340] a dynamically scheduled resource of the Uu interface configured for the first device.

[0341] Optionally, the information transmission device, wherein the processor 830 is further configured to:

[0342] forward data sent by the first terminal through a direct communication interface to the second device through preconfigured grant information or a dynamically scheduled resource of the Uu interface configured for the first device.

[0343] Optionally, the information transmission device, wherein in a case where the second device is a device responsible for scheduling a direct communication interface resource between the first device and a second terminal, the direct communication interface configuration resource includes at least one of:

[0344] a first type of preconfigured grant configured for a direct communication interface between the first device and the second terminal;

[0345] a second type of preconfigured grant configured for the direct communication interface between the first device and the second terminal;

[0346] a dynamically scheduled resource configured for the direct communication interface between the first device and the second terminal.

[0347] Optionally, the information transmission device, wherein the data sent by the first terminal through the direct communication interface is forwarded to the second terminal by configuring resources of the direct communication interface.

[0348] Optionally, the information transmission device, wherein the device responsible for scheduling resources of the direct communication interface between the first device and the second terminal is the second terminal, or a third terminal different from the first terminal and the second terminal.

[0349] Optionally, the information transmission device is a relay terminal.

[0350] Optionally, the information transmission device is a relay terminal. Figure 8 Optionally, the information transmission device is a relay terminal.

[0351] The processor 830 is responsible for managing the bus architecture and general processing, and the memory 810 can store data used by the processor 600 in performing operations.

[0352] Optionally, the processor 830 can be a CPU (Central Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). The processor can also adopt a multi-core architecture.

[0353] The embodiments of the present application also provide an information transmission device, the information transmission device being a second device, as shown in Figure 9 The information transmission device includes a memory 910, a transceiver 920, and a processor 930.

[0354] a memory 910 for storing a computer program; a transceiver 920 for transceiving data under control of the processor 930; and a processor 930 for reading the computer program in the memory 910 and performing the following operations:

[0355] receiving assistance information sent by the first device; wherein the assistance information is generated by the first device according to direct communication interface control information SCI sent by the first terminal.

[0356] Optionally, the information transmission device, wherein the second device is one of the following:

[0357] a network device accessed by the first device through a Uu interface;

[0358] a device responsible for scheduling direct communication interface resources between the first device and the second terminal;

[0359] wherein the second terminal is a communication counterpart that communicates with the first terminal through the first device.

[0360] Optionally, the information transmission device, wherein the assistance information includes at least one of the following:

[0361] time domain resource indication information;

[0362] data size.

[0363] Optionally, the information transmission device, wherein the time domain resource indication information is determined according to resource reservation information carried in the SCI.

[0364] Optionally, the information transmission device, wherein the data size is determined according to resource reservation information carried in the SCI and modulation and coding strategy MCS carried in the SCI.

[0365] Optionally, the information transmission device, wherein the time domain resource indication information is used to indicate time domain resource information corresponding to initial transmission and / or retransmission.

[0366] Optionally, the information transmission device, wherein the time domain resource indication information indicates time domain resource information corresponding to retransmission, including:

[0367] indicating specific time domain resources corresponding to each retransmission.

[0368] Optionally, the information transmission device, wherein the time domain resource indication information indicates time domain resource information corresponding to initial transmission, including one of the following:

[0369] indicating a starting position and a period of time domain resources corresponding to initial transmission;

[0370] indicate a starting position, a period and a repetition number of the time domain resource corresponding to the initial transmission;

[0371] indicate a starting position, a period and a resource ending moment of the time domain resource corresponding to the initial transmission.

[0372] Optionally, the information transmission device, wherein the processor 930 is further configured to:

[0373] determine a direct communication interface configuration resource of the first device according to the assistance information;

[0374] send the direct communication interface configuration resource to the first device.

[0375] Optionally, the information transmission device, wherein in a case where the second device is a network device accessed by the first device through a Uu interface, the direct communication interface configuration resource comprises at least one of the following:

[0376] a first type of preconfigured grant of the Uu interface configured for the first device;

[0377] a second type of preconfigured grant of the Uu interface configured for the first device;

[0378] a dynamically scheduled resource of the Uu interface configured for the first device.

[0379] wherein a time domain position of the resource indicated in the preconfigured grant or the dynamically scheduled resource matches a time domain position of the resource indicated in the assistance information.

[0380] Optionally, the information transmission device, wherein in a case where the second device is a device responsible for scheduling a direct communication interface resource between the first device and a second terminal, the direct communication interface configuration resource comprises at least one of the following:

[0381] a first type of preconfigured grant configured for a direct communication interface between the first device and the second terminal; wherein the second terminal is a communication peer of the first terminal relaying communication through the first device;

[0382] a second type of preconfigured grant configured for the direct communication interface between the first device and the second terminal;

[0383] a dynamically scheduled resource configured for the direct communication interface between the first device and the second terminal.

[0384] Optionally, in an embodiment, the information transmission device is a network device or a terminal.

[0385] For example, in a case where the information transmission device is a network side device, Figure 9In particular embodiments, the bus architecture can include any number of interconnecting buses and bridges, depending on the specific application of the processor 930 and the memory 910 represented by various circuitry linking the processor 930 and the memory 910. The bus architecture can also include various other circuitry to link various circuitry, such as peripheral devices, voltage regulators, and power management circuitry, all of which are well known in the art, and therefore, will not be further described herein. The bus interface provides an interface to the transceiver 920. The transceiver 920 can be a plurality of elements, including a transmitter and a receiver, that provide means for communicating with various other apparatus over a transmission medium, including a wireless channel, a wired channel, optical cable, and the like. The processor 930 is responsible for managing the bus architecture and general processing, including the execution of software stored in the memory 910.

[0386] The processor 930 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD), or processor can be a multi-core processor.

[0387] The embodiments of the present application also provide an information transmission apparatus, executed by a first device, comprising: Figure 10 As shown in the figure, the information transmission apparatus comprises:

[0388] A first receiving unit 1010, configured to receive a direct communication interface control information (SCI) sent by a first terminal;

[0389] A first sending unit 1020, configured to send the auxiliary information to a second device, wherein the auxiliary information is generated according to the SCI.

[0390] Optionally, the information transmission apparatus, wherein the apparatus further comprises:

[0391] An information generating unit 1030, configured to, after receiving the SCI sent by the first terminal, if the SCI includes resource reservation information, generate the auxiliary information according to the SCI.

[0392] Optionally, the information transmission apparatus, wherein the resource reservation information includes at least one of the following:

[0393] Resource reservation information of a direct communication interface initial transmission resource;

[0394] Resource reservation information of a direct communication interface retransmission resource.

[0395] Optionally, the information transmission apparatus, wherein the second device is one of:

[0396] a network device accessed by the first device through a Uu interface;

[0397] a device responsible for scheduling a direct communication interface resource between the first device and the second terminal;

[0398] wherein the second terminal is a communication peer of the first terminal for relaying communication through the first device.

[0399] Optionally, the information transmission apparatus, wherein the assistance information comprises at least one of:

[0400] time domain resource indication information;

[0401] a data size.

[0402] Optionally, the information transmission apparatus, wherein the time domain resource indication information is determined according to resource reservation information carried in the SCI.

[0403] Optionally, the information transmission apparatus, wherein the data size is determined according to resource reservation information carried in the SCI and modulation and coding strategy (MCS) carried in the SCI.

[0404] Optionally, the information transmission apparatus, wherein the time domain resource indication information is used to indicate time domain resource information corresponding to initial transmission and / or retransmission.

[0405] Optionally, the information transmission apparatus, wherein the time domain resource indication information indicates time domain resource information corresponding to retransmission, comprising:

[0406] indicating specific time domain resources corresponding to each retransmission.

[0407] Optionally, the information transmission apparatus, wherein the time domain resource indication information indicates time domain resource information corresponding to initial transmission, comprising one of:

[0408] indicating a starting position and a period of time domain resources corresponding to initial transmission;

[0409] indicating a starting position, a period and a repetition number of time domain resources corresponding to initial transmission;

[0410] indicating a starting position, a period and a resource end time of time domain resources corresponding to initial transmission.

[0411] Optionally, the information transmission apparatus, wherein the SCI is a first-stage SCI or a second-stage SCI.

[0412] Optionally, the information transmission apparatus, wherein:

[0413] The first receiving unit 1010 is further configured to receive a direct communication interface configuration resource sent by the second device according to the assistance information.

[0414] The first sending unit 1020 is further configured to forward direct communication interface data sent by the first terminal through the direct communication interface configuration resource.

[0415] Optionally, the information transmission apparatus, wherein, in the case that the second device is a network device accessed by the first device through a Uu interface, the direct communication interface configuration resource comprises at least one of:

[0416] a first type of preconfigured grant of the Uu interface configured for the first device;

[0417] a second type of preconfigured grant of the Uu interface configured for the first device;

[0418] a dynamically scheduled resource of the Uu interface configured for the first device.

[0419] Optionally, the information transmission apparatus, wherein the first sending unit 1020 is further configured to:

[0420] forward data sent by the first terminal through a direct communication interface to the second device through preconfigured grant information or a dynamically scheduled resource of the Uu interface configured for the first device.

[0421] Optionally, the information transmission apparatus, wherein, in the case that the second device is a device responsible for scheduling direct communication interface resources between the first device and a second terminal, the direct communication interface configuration resource comprises at least one of:

[0422] a first type of preconfigured grant configured for a direct communication interface between the first device and the second terminal;

[0423] a second type of preconfigured grant configured for the direct communication interface between the first device and the second terminal;

[0424] a dynamically scheduled resource configured for the direct communication interface between the first device and the second terminal.

[0425] Optionally, the information transmission apparatus, wherein the first sending unit 1020 forwards data sent by the first terminal through a direct communication interface to the second terminal through the direct communication interface configuration resource.

[0426] Optionally, the information transmission apparatus, wherein the device responsible for scheduling the direct communication interface resource between the first device and the second terminal is the second terminal, or a third terminal different from the first terminal and the second terminal.

[0427] The embodiment of the present application further provides an information transmission apparatus, executed by a second device, as shown in the figure, the apparatus comprises: Figure 11

[0428] A second receiving unit 1110, configured to receive auxiliary information sent by a first device; wherein the auxiliary information is generated by the first device according to direct communication interface control information SCI sent by a first terminal.

[0429] Optionally, the information transmission apparatus, wherein the second device is one of the following:

[0430] A network device accessed by the first device through a Uu interface;

[0431] A device responsible for scheduling a direct communication interface resource between the first device and a second terminal;

[0432] The second terminal is a communication opposite end in relay communication with the first terminal through the first device.

[0433] Optionally, the information transmission apparatus, wherein the auxiliary information comprises at least one of the following:

[0434] Time domain resource indication information;

[0435] Data size.

[0436] Optionally, the information transmission apparatus, wherein the time domain resource indication information is determined according to resource reservation information carried in the SCI.

[0437] Optionally, the information transmission apparatus, wherein the data size is determined according to resource reservation information carried in the SCI and modulation and coding strategy (MCS) carried in the SCI.

[0438] Optionally, the information transmission apparatus, wherein the time domain resource indication information is used for indicating time domain resource information corresponding to initial transmission and / or retransmission.

[0439] Optionally, the information transmission apparatus, wherein the time domain resource indication information indicates time domain resource information corresponding to retransmission, and the time domain resource indication information comprises:

[0440] Indicating specific time domain resource corresponding to each retransmission.

[0441] ​Optionally, the information transmission apparatus, wherein the time domain resource indication information indicates time domain resource information corresponding to initial transmission, and the time domain resource indication information comprises one of the following:

[0442] a start position and a period of time domain resource corresponding to initial transmission;

[0443] a start position, a period and a repetition number of time domain resource corresponding to initial transmission;

[0444] a start position, a period and an end time of time domain resource corresponding to initial transmission.

[0445] Optionally, the information transmission apparatus, wherein the apparatus further comprises:

[0446] a processing unit 1120 configured to determine a direct communication interface configuration resource of the first device according to the assistance information;

[0447] a second sending unit 1130 configured to send the direct communication interface configuration resource to the first device.

[0448] Optionally, the information transmission apparatus, wherein in a case where the second device is a network device accessed by the first device through a Uu interface, the direct communication interface configuration resource comprises at least one of the following:

[0449] a first type of preconfigured grant of the Uu interface configured for the first device;

[0450] a second type of preconfigured grant of the Uu interface configured for the first device;

[0451] a dynamically scheduled resource of the Uu interface configured for the first device.

[0452] wherein a time domain position of the resource indicated in the preconfigured grant or the dynamically scheduled resource matches a time domain position of the resource indicated in the assistance information.

[0453] Optionally, the information transmission apparatus, wherein in a case where the second device is a device responsible for scheduling a direct communication interface resource between the first device and a second terminal, the direct communication interface configuration resource comprises at least one of the following:

[0454] a first type of preconfigured grant configured for a direct communication interface between the first device and the second terminal; wherein the second terminal is a communication peer of the first terminal relaying communication through the first device;

[0455] a second type of preconfigured grant configured for a direct communication interface between the first device and the second terminal;

[0456] dynamically scheduled resources configured for the direct communication interface between the first device and the second terminal.

[0457] In addition, the division of units in the embodiments of the present application is illustrative, and is merely a logical functional division. In actual implementation, another division manner can be used. In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0458] When the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, the integrated unit can be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0459] It should be noted that the above-described apparatus provided by the embodiments of the present application can implement all method steps achieved by the method embodiments and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments are not described in detail.

[0460] The embodiments of the present application also provide a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to make the processor execute the information transmission method according to any one of the above.

[0461] The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to a magnetic storage (such as a floppy disk, a hard disk, a magnetic tape, a magneto-optical disk (MO), etc.), an optical storage (such as a CD, a DVD, a BD, a HVD, etc.), and a semiconductor storage (such as a ROM, an EPROM, an EEPROM, a non-volatile memory (NAND FLASH), a solid-state disk (SSD)), etc.

[0462] Those skilled in the art will appreciate that embodiments of the present application can be readily used as software, hardware, or a combination of software and hardware. In one

[0463] The present application is described in reference to the flow diagrams and / or block diagrams of the methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flow diagrams and / or block diagrams, and combinations of blocks in the flow diagrams and / or block diagrams, can be implemented by computer executable instructions. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 means for performing one or more functions specified in the flow diagram and / or block diagram block or blocks.

[0464] These processor-executable instructions can also be loaded onto a computer or other programmable data processing devices, so that a series of operations are performed on the computer or other programmable data devices, to generate a computer-implemented process such that the instructions executed on the computer or other programmable devices provide steps for implementing the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 means for performing one or more functions specified in the flow diagram and / or block diagram block or blocks.

[0465] These processor-executable instructions can also be loaded onto a computer or other programmable data processing devices, so that a series of operations are performed on the computer or other programmable data devices, to generate a computer-implemented process such that the instructions executed on the computer or other programmable devices provide steps for implementing the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 means for performing one or more functions specified in the flow diagram and / or block diagram block or blocks.

[0466] Obviously, various modifications and changes are possible in the present application without departing from the scope and spirit of the application. Accordingly, it is intended that all possible modifications and changes that can be made be included within the scope of the application as defined by the following claims and their equivalents.

Claims

1. A method of information transmission, characterized in that, The method is performed by a first device, and the method comprises: receiving, by a first device, a direct communication interface control information (SCI) sent by a first terminal; sending, by the first device, assistance information to a second device, wherein the assistance information is generated according to the SCI; wherein the method further comprises: after receiving the SCI sent by the first terminal, if resource reservation information is included in the SCI, generating the assistance information according to the SCI; The information transmission method further comprises: receiving, by the first device, a direct communication interface configuration resource sent by the second device according to the assistance information; forwarding, by the first device, direct communication interface data sent by the first terminal through the direct communication interface configuration resource.

2. The information transmission method according to claim 1, wherein: The resource reservation information comprises at least one of: resource reservation information of a direct communication interface initial transmission resource; resource reservation information of a direct communication interface retransmission resource.

3. The information transmission method of claim 1, wherein, The second device is one of: a network device accessed by the first device through a Uu interface; a device responsible for scheduling direct communication interface resources between the first device and a second terminal; wherein the second terminal is a communication peer of the first terminal for relaying communication through the first device.

4. The information transmission method of claim 1, wherein, The assistance information comprises at least one of: time domain resource indication information; a data size.

5. The information transmission method of claim 4, wherein, The time domain resource indication information is determined according to resource reservation information carried in the SCI.

6. The information transmission method of claim 4, wherein, The data size is determined according to resource reservation information carried in the SCI and a modulation and coding strategy (MCS) carried in the SCI.

7. The information transmission method of claim 4, wherein, The time domain resource indication information is used to indicate time domain resource information corresponding to initial transmission and / or retransmission.

8. The information transmission method according to claim 7, characterized by, The time domain resource indication information indicating time domain resource information corresponding to retransmission comprises indicating specific time domain resources corresponding to each retransmission.

9. The information transmission method of claim 7, wherein, The time domain resource indication information indicating time domain resource information corresponding to initial transmission comprises at least one of: indicating a starting position and a period of time domain resources corresponding to initial transmission; indicating a starting position, a period, and a repetition number of time domain resources corresponding to initial transmission; indicating a starting position, a period, and a resource end time of time domain resources corresponding to initial transmission.

10. The information transmission method according to claim 1, wherein: The SCI is a first-stage SCI or a second-stage SCI.

11. The information transmission method of claim 1, wherein, In the case where the second device is a network device accessed by the first device through a Uu interface, the direct communication interface configuration resource comprises at least one of: a first type of preconfigured grant of the Uu interface configured for the first device; a second type of preconfigured grant of the Uu interface configured for the first device; a dynamically scheduled resource of the Uu interface configured for the first device.

12. The information transmission method of claim 11, wherein, The method further comprises: forwarding, by the first device, data sent by the first terminal through a direct communication interface to the second device through preconfigured grant information or a dynamically scheduled resource of the Uu interface configured for the first device.

13. The information transmission method of claim 1, wherein, In the case where the second device is a device responsible for scheduling direct communication interface resources between the first device and a second terminal, the direct communication interface configuration resource comprises at least one of: a first type of preconfigured grant configured for a direct communication interface between the first device and the second terminal; a second type of preconfigured grant configured for a direct communication interface between the first device and the second terminal; a dynamically scheduled resource configured for the direct communication interface between the first device and the second terminal.

14. The information transmission method according to claim 13, further comprising: forwarding, to the second terminal, data transmitted by the first terminal through the direct communication interface, by using the direct communication interface configuration resource.

15. The information transmission method according to claim 3 or 13, characterized by, the device responsible for scheduling the direct communication interface resource between the first device and the second terminal is the second terminal, or a third terminal different from the first terminal and the second terminal.

16. An information transmission method characterized by comprising: The method is performed by a second device, and the method comprises: receiving assistance information transmitted by a first device; wherein the assistance information is generated by the first device according to a direct communication interface control information (SCI) transmitted by a first terminal, in a case that the SCI includes resource reservation information; The information transmission method further comprises: determining, according to the assistance information, a direct communication interface configuration resource of the first device; transmitting, to the first device, the direct communication interface configuration resource.

17. The information transmission method of claim 16, wherein, The second device is one of: a network device accessed by the first device through a Uu interface; a device responsible for scheduling the direct communication interface resource between the first device and the second terminal; The second terminal is a communication peer of the first terminal, which communicates with the first terminal through the first device.

18. The information transmission method of claim 16, wherein, The assistance information includes at least one of: time domain resource indication information; a data size.

19. The information transmission method of claim 18, wherein, The time domain resource indication information is determined according to resource reservation information carried in the SCI.

20. The information transmission method of claim 18, wherein, The data size is determined according to resource reservation information carried in the SCI and a modulation and coding strategy (MCS) carried in the SCI.

21. The information transmission method of claim 18, wherein, The time domain resource indication information is used to indicate time domain resource information corresponding to initial transmission and / or retransmission.

22. The information transmission method of claim 21, wherein, The time domain resource indication information indicating time domain resource information corresponding to retransmission includes: indicating specific time domain resources corresponding to each retransmission.

23. The information transmission method of claim 21, wherein, The time domain resource indication information indicating time domain resource information corresponding to initial transmission includes at least one of: indicating a starting position and a period of time domain resources corresponding to initial transmission; indicating a starting position, a period and a repetition number of time domain resources corresponding to initial transmission; indicating a starting position, a period and a resource end time of time domain resources corresponding to initial transmission.

24. The information transmission method of claim 16, wherein, In a case that the second device is a network device accessed by the first device through a Uu interface, the direct communication interface configuration resource includes at least one of: a first type of preconfigured grant of the Uu interface configured for the first device; a second type of preconfigured grant of the Uu interface configured for the first device; a dynamically scheduled resource of the Uu interface configured for the first device; wherein a time domain position of a resource indicated in the preconfigured grant or the dynamically scheduled resource matches a time domain position of a resource indicated in the assistance information.

25. The information transmission method of claim 16, wherein, In a case that the second device is a device responsible for scheduling the direct communication interface resource between the first device and the second terminal, the direct communication interface configuration resource includes at least one of: a first type of preconfigured grant configured for a direct communication interface between the first device and the second terminal; wherein the second terminal is a communication peer of the first terminal relaying communication through the first device; a second type of preconfigured grant configured for the direct communication interface between the first device and the second terminal; a dynamically scheduled resource configured for the direct communication interface between the first device and the second terminal.

26. An information transmitting apparatus, the information transmitting apparatus being a first apparatus, characterized by comprising: comprising a memory, a transceiver and a processor: the memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: receiving, from a first terminal, a direct communication interface control information (SCI); sending, to a second device, assistance information, wherein the assistance information is generated according to the SCI; wherein the processor is further configured to: if the SCI includes resource reservation information, generating the assistance information according to the SCI after receiving the SCI sent by the first terminal; the processor is further configured to: receiving, from the second device, a direct communication interface configuration resource sent according to the assistance information; forwarding, through the direct communication interface configuration resource, direct communication interface data sent by the first terminal.

27. The information transmitting apparatus according to claim 26, wherein The assistance information includes at least one of: time domain resource indication information; data size.

28. The information transmitting apparatus according to claim 27, wherein The time domain resource indication information is determined according to resource reservation information carried in the SCI.

29. The information transmitting apparatus according to claim 27, wherein The data size is determined according to resource reservation information carried in the SCI and modulation and coding strategy (MCS) carried in the SCI.

30. An information transmitting apparatus, the information transmitting apparatus being a second apparatus, characterized by comprising a memory, a transceiver and a processor: the memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: receiving, from a first device, assistance information; wherein the assistance information is generated by the first device according to a direct communication interface control information (SCI) sent by a first terminal in a case where the SCI includes resource reservation information; wherein the processor is further configured to: determining, according to the assistance information, a direct communication interface configuration resource of the first device; sending, to the first device, the direct communication interface configuration resource.

31. An information transmission apparatus, characterized by comprising: executed by a first device, the apparatus comprising: a first receiving unit configured to receive, from a first terminal, a direct communication interface control information (SCI); a first sending unit configured to send, to a second device, assistance information, wherein the assistance information is generated according to the SCI; wherein the apparatus further comprises: an information generating unit configured to generate the assistance information according to the SCI if the SCI includes resource reservation information after receiving the SCI sent by the first terminal; wherein the first receiving unit is further configured to receive, from the second device, a direct communication interface configuration resource sent according to the assistance information; the first sending unit is further configured to forward, through the direct communication interface configuration resource, direct communication interface data sent by the first terminal.

32. An information transmission apparatus, characterized by comprising: executed by a second device, the apparatus comprising: A second receiving unit, configured to receive auxiliary information sent by a first device; wherein the auxiliary information is generated by the first device according to a direct communication interface control information SCI sent by a first terminal in a case where the SCI includes resource reservation information; The apparatus further includes: A processing unit, configured to determine a direct communication interface configuration resource of the first device according to the auxiliary information; A second sending unit, configured to send the direct communication interface configuration resource to the first device.

33. A processor-readable storage medium, comprising: The processor readable storage medium stores a computer program, and the computer program is used for making the processor execute the information transmission method in any one of claims 1 to 15, or the information transmission method in any one of claims 16 to 25.

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