Information transmission method and device, equipment and medium

Abstract

The invention provides an information transmission method and device, equipment and a medium. The information transmission method comprises the following steps: sending first control information to a second terminal, the first control information comprising at least one of the following information: first indication information used for indicating the type of a second-level SCI; the second indication information is used for indicating a relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; the third indication information is used for indicating that the second-level SCI contains the time domain position of the SL-PRS resource or contains the time domain position of the PSSCH; the fourth indication information is used for indicating the time domain position of the SL-PRS resource; the fifth indication information is used for indicating the time domain position of the PSSCH in the same time slot as the SL-PRS resource; and the sixth indication information is used for indicating the index number of the SL-PRS resource. According to the invention, the terminal can correctly receive the SL-PRS through the first control information.

Description

Technical Field

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

[0002] In the existing New Radio (NR) positioning technology, downlink positioning reference signals and uplink positioning reference signals are defined in the air interface between the base station and the terminal to complete the terminal positioning based on the downlink or uplink positioning reference signals. Considering the relative positioning between terminals, that is, the need for direct link positioning, a direct link positioning reference signal (Sidelink Positioning Reference Signal, SL-PRS) transmitted between terminals is also introduced so that the terminal does not rely on the downlink positioning reference signal or the uplink positioning reference signal, but directly uses the SL-PRS to complete the relative positioning process between terminals.

[0003] When the SL-PRS is transmitted in the shared resource pool, there is currently no relevant technical solution for how to enable the terminal to correctly receive the SL-PRS to complete the direct link positioning. Summary of the invention

[0004] The purpose of the present application is to provide an information transmission method, apparatus, device and medium to solve the problem of how to enable a terminal to correctly receive SL-PRS when SL-PRS is transmitted in a shared resource pool.

[0005] In order to achieve the above-mentioned purpose, in a first aspect, an embodiment of the present application provides an information transmission method, which is applied to a first communication device, including:

[0006] Sending first control information to the second terminal, wherein the first control information includes at least one of the following information:

[0007] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0008] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the physical direct link shared channel PSSCH;

[0009] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0010] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0011] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0012] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0013] In some embodiments, the first indication information is a reserved field value of a first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or,

[0014] The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

[0015] In some embodiments, when the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information;

[0016] When the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

[0017] In some embodiments, the second level SCI is used to indicate SL-PRS resource information.

[0018] In some embodiments, the second indication information is used to indicate:

[0019] The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or,

[0020] In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0021] In some embodiments, the fourth indication information is used to indicate:

[0022] The index number of the first OFDM symbol occupied by the SL-PRS resource; or,

[0023] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or,

[0024] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0025] In some embodiments, the fifth indication information is used to indicate:

[0026] The index number of the last OFDM symbol occupied by the PSSCH; or,

[0027] The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or

[0028] The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

[0029] In some embodiments, the index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0030] The number of OFDM symbols occupied by the SL-PRS resources;

[0031] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0032] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0033] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0034] In some embodiments, when the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

[0035] In some embodiments, the first control information is carried by at least one of the following information:

[0036] First level SCI;

[0037] Level II SCI;

[0038] Downlink control information DCI;

[0039] Radio Resource Control (RRC) signaling;

[0040] Straight-through Link Positioning Protocol SLPP signaling.

[0041] In a second aspect, an embodiment of the present application further provides an information transmission method, which is applied to a second terminal, including:

[0042] Receiving first control information sent by a first communication device;

[0043] According to the first control information, receiving a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal;

[0044] The first control information includes at least one of the following information:

[0045] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0046] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH;

[0047] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0048] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0049] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0050] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0051] In some embodiments, the first indication information is a reserved field value of a first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or,

[0052] The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

[0053] In some embodiments, when the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information;

[0054] When the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

[0055] In some embodiments, the second level SCI is used to indicate SL-PRS resource information.

[0056] In some embodiments, the second indication information is used to indicate:

[0057] The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or,

[0058] In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0059] In some embodiments, the fourth indication information is used to indicate:

[0060] The index number of the first OFDM symbol occupied by the SL-PRS resource; or,

[0061] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or,

[0062] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0063] In some embodiments, the fifth indication information is used to indicate:

[0064] The index number of the last OFDM symbol occupied by the PSSCH; or,

[0065] The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or

[0066] The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

[0067] In some embodiments, the index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0068] The number of OFDM symbols occupied by the SL-PRS resources;

[0069] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0070] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0071] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0072] In some embodiments, when the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

[0073] In some embodiments, the receiving first control information sent by the first communication device includes:

[0074] Receiving first control information sent by a first communication device through at least one of the following information:

[0075] First level SCI;

[0076] Level II SCI;

[0077] Downlink control information DCI;

[0078] Radio Resource Control (RRC) signaling;

[0079] Straight-through Link Positioning Protocol SLPP signaling.

[0080] In some embodiments, the first control information includes the first indication information;

[0081] The receiving, according to the first control information, a direct link positioning reference signal SL-PRS sent by the first terminal includes:

[0082] Determine the type of the second-level SCI according to the first indication information;

[0083] Determining the time domain position of the SL-PRS resource according to the type of the second-level SCI;

[0084] Receive the SL-PRS sent by the first terminal according to the time domain position of the SL-PRS resource.

[0085] In some embodiments, the first control information includes the second indication information and the third indication information;

[0086] The receiving, according to the first control information, a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal includes:

[0087] Determine the time domain position of the SL-PRS resource and / or the time domain position of the PSSCH according to the second indication information, the third indication information and the first level SCI; wherein the first level SCI is used to indicate the time domain position of the PSSCH and the SL-PRS resource;

[0088] receiving the SL-PRS sent by the first terminal according to the time domain position of the SL-PRS resource; and / or,

[0089] The PSSCH sent by the first terminal is received according to the time domain position of the PSSCH.

[0090] In some embodiments, the first control information includes the fifth indication information;

[0091] The receiving, according to the first control information, a physical direct link shared channel PSSCH sent by the first terminal includes:

[0092] Determine the time domain position of the PSSCH according to the fifth indication information;

[0093] The PSSCH sent by the first terminal is received according to the time domain position of the PSSCH.

[0094] In some embodiments, the first control information includes the fourth indication information or the sixth indication information;

[0095] The receiving, according to the first control information, a direct link positioning reference signal SL-PRS sent by the first terminal includes:

[0096] Determine, according to the fourth indication information or the sixth indication information, a time domain position of the SL-PRS resource;

[0097] The SL-PRS sent by the first terminal is received according to the time domain position of the SL-PRS resource.

[0098] In a third aspect, an embodiment of the present application further provides a communication device, the communication device being a first communication device, comprising: a memory, a transceiver, and a processor: the memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor, and performs the following operations:

[0099] Sending first control information to the second terminal, wherein the first control information includes at least one of the following information:

[0100] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0101] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the physical direct link shared channel PSSCH;

[0102] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0103] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0104] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0105] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0106] In some embodiments, the first indication information is a reserved field value of a first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or,

[0107] The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

[0108] In some embodiments, when the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information;

[0109] When the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

[0110] In some embodiments, the second level SCI is used to indicate SL-PRS resource information.

[0111] In some embodiments, the second indication information is used to indicate:

[0112] The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or,

[0113] In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0114] In some embodiments, the fourth indication information is used to indicate:

[0115] The index number of the first OFDM symbol occupied by the SL-PRS resource; or,

[0116] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or,

[0117] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0118] In some embodiments, the fifth indication information is used to indicate:

[0119] The index number of the last OFDM symbol occupied by the PSSCH; or,

[0120] The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or

[0121] The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

[0122] In some embodiments, the index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0123] The number of OFDM symbols occupied by the SL-PRS resources;

[0124] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0125] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0126] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0127] In some embodiments, when the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

[0128] In some embodiments, the first control information is carried by at least one of the following information:

[0129] First level SCI;

[0130] Level II SCI;

[0131] Downlink control information DCI;

[0132] Radio Resource Control (RRC) signaling;

[0133] Straight-through Link Positioning Protocol SLPP signaling.

[0134] In a fourth aspect, an embodiment of the present application further provides an information transmission device, including:

[0135] The first sending unit is configured to send first control information to the second terminal, wherein the first control information includes at least one of the following information:

[0136] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0137] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the physical direct link shared channel PSSCH;

[0138] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0139] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0140] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0141] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0142] In a fifth aspect, an embodiment of the present application further provides a terminal, which is a second terminal, comprising: a memory, a transceiver, and a processor: the memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor, and performs the following operations:

[0143] Receiving first control information sent by a first communication device;

[0144] According to the first control information, receiving a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal;

[0145] The first control information includes at least one of the following information:

[0146] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0147] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH;

[0148] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0149] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0150] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0151] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0152] In some embodiments, the first indication information is a reserved field value of a first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or,

[0153] The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

[0154] In some embodiments, when the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information;

[0155] When the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

[0156] In some embodiments, the second level SCI is used to indicate SL-PRS resource information.

[0157] In some embodiments, the second indication information is used to indicate:

[0158] The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or,

[0159] In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0160] In some embodiments, the fourth indication information is used to indicate:

[0161] The index number of the first OFDM symbol occupied by the SL-PRS resource; or,

[0162] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or,

[0163] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0164] In some embodiments, the fifth indication information is used to indicate:

[0165] The index number of the last OFDM symbol occupied by the PSSCH; or,

[0166] The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or

[0167] The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

[0168] In some embodiments, the index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0169] The number of OFDM symbols occupied by the SL-PRS resources;

[0170] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0171] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0172] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0173] In some embodiments, when the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

[0174] In some embodiments, the transceiver is further configured to:

[0175] Receiving first control information sent by a first communication device through at least one of the following information:

[0176] First level SCI;

[0177] Level II SCI;

[0178] Downlink control information DCI;

[0179] Radio Resource Control (RRC) signaling;

[0180] Straight-through Link Positioning Protocol SLPP signaling.

[0181] In some embodiments, the first control information includes the first indication information; and the processor is further configured to:

[0182] Determine the type of the second-level SCI according to the first indication information;

[0183] Determining the time domain position of the SL-PRS resource according to the type of the second-level SCI;

[0184] The SL-PRS sent by the first terminal is received by the transceiver according to the time domain position of the SL-PRS resource.

[0185] In some embodiments, the first control information includes the second indication information and the third indication information; and the processor is further configured to:

[0186] Determine the time domain position of the SL-PRS resource and / or the time domain position of the PSSCH according to the second indication information, the third indication information and the first level SCI; wherein the first level SCI is used to indicate the time domain position of the PSSCH and the SL-PRS resource;

[0187] The transceiver is also used for:

[0188] receiving the SL-PRS sent by the first terminal according to the time domain position of the SL-PRS resource; and / or,

[0189] The PSSCH sent by the first terminal is received according to the time domain position of the PSSCH.

[0190] In some embodiments, the first control information includes the fifth indication information; and the processor is further configured to:

[0191] Determine the time domain position of the PSSCH according to the fifth indication information;

[0192] The PSSCH sent by the first terminal is received by the transceiver according to the time domain position of the PSSCH.

[0193] In some embodiments, the first control information includes the fourth indication information or the sixth indication information; and the processor is further configured to:

[0194] Determine, according to the fourth indication information or the sixth indication information, a time domain position of the SL-PRS resource;

[0195] The SL-PRS sent by the first terminal is received by the transceiver according to the time domain position of the SL-PRS resource.

[0196] In a sixth aspect, an embodiment of the present application further provides an information transmission device, including:

[0197] A first receiving unit, configured to receive first control information sent by a first communication device;

[0198] A second receiving unit, configured to receive a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal according to the first control information;

[0199] The first control information includes at least one of the following information:

[0200] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0201] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH;

[0202] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0203] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0204] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0205] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0206] In the seventh aspect, an embodiment of the present application also provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the steps of the information transmission method described in the first aspect above, or execute the steps of the information transmission method described in the second aspect above.

[0207] The above technical solution of the present application has at least the following beneficial effects:

[0208] In the above-mentioned technical scheme of the embodiment of the present application, the first control information is sent to the second terminal, wherein the first control information includes at least one of the following information: first indication information, used to indicate the type of the second-level SCI; second indication information, used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; third indication information, used to indicate that the second-level SCI contains the time domain position of the SL-PRS resource or contains the time domain position of the PSSCH; fourth indication information, used to indicate the time domain position of the SL-PRS resource; fifth indication information, used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; sixth indication information, used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource; in this way, when the SL-PRS is transmitted in the shared resource pool, the terminal can correctly receive the SL-PRS through the time domain position indication of the SL-PRS resource in the first control information, thereby completing the direct link positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0209] Figure 1 This is a schematic diagram of positioning between terminals using SL-PRS

[0210] Figure 2 This is one of the flowcharts of the information transmission method according to an embodiment of the present application;

[0211] Figure 3 This is one of the schematic diagrams of the relative relationship between the SL-PRS resource time domain position and the PSSCH time domain position in an embodiment of the present application;

[0212] Figure 4 This is a second schematic diagram of the relative relationship between the SL-PRS resource time domain position and the PSSCH time domain position according to an embodiment of the present application;

[0213] Figure 5 A schematic diagram of the time domain position of the SL-PRS resource indicated by the fourth indication information of an embodiment of the present application;

[0214] Figure 6 Schematic diagram of the time domain position of the PSSCH indicated by the fifth indication information of an embodiment of the present application

[0215] Figure 7 A schematic diagram of the index number of the SL-PRS resource indicated by the sixth indication information of an embodiment of the present application;

[0216] Figure 8 This is a schematic diagram of sending the first control information according to an embodiment of the present application;

[0217] Fig. 9 This is a second flow chart of the information transmission method according to an embodiment of the present application;

[0218] Fig.10 A structural block diagram of a communication device according to an embodiment of the present application;

[0219] Fig.11 This is one of the module schematic diagrams of the information transmission device according to an embodiment of the present application;

[0220] Fig.12 This is a structural block diagram of a terminal according to an embodiment of the present application;

[0221] Fig.13 This is the second module schematic diagram of the information transmission device according to an embodiment of the present application. DETAILED DESCRIPTION

[0222] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0223] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0224] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0225] In order to facilitate understanding of the solution of this application, the relevant contents involved in this application are first introduced.

[0226] like Figure 1 The figure shows a schematic diagram of using SL-PRS for positioning between terminals. Among them, terminal 1 uses time-frequency resources to send SL-PRS to terminals 2 to 4 respectively. After receiving SL-PRS, terminals 2 to 4 send the measurement results to terminal 1 to assist terminal 1 in completing positioning solution.

[0227] In the existing SL data communication technology, the control information used to indicate the transmission parameters of the physical sidelink shared channel (PSSCH) is carried through two levels of sidelink control information (SCI), namely: the first level SCI and the second level SCI. The first level SCI is used to indicate the time-frequency resource information of the PSSCH, and the second level SCI is used to indicate the HARQ information related to the PSSCH and the ID information of the source and the target. The second level SCI includes SCI format 2-A / B / C.

[0228] Currently, PSSCH and SL-PRS are multiplexed in a time division multiplexing (TDM) manner, that is, PSSCH and SL-PRS occupy different symbols in the same time slot.

[0229] SL-PRS may be transmitted in a dedicated resource pool or in a shared resource pool. Dedicated resource pool and shared resource pool are two types of resource pools that can be used for SL-PRS transmission. In a dedicated resource pool, only SL-PRS and its associated physical sidelink control channel (PSCCH) can be transmitted. In a shared resource pool, both SL-PRS and SL data not related to positioning, such as PSSCH or physical sidelink feedback channel (PSFCH), can be transmitted.

[0230] When SL-PRS is transmitted in a shared resource pool, PSSCH and SL-PRS are transmitted in the same time slot. The terminal needs to determine the type information of the second-level SCI used to indicate the SL-PRS resource information and the specific OFDM symbol position of the SL-PRS resource in the time slot before it can receive the SL-PRS and complete the SL positioning. However, there is currently no relevant technical solution for how to send indication information to the terminal so that the terminal can obtain this information. If the terminal cannot determine the various information of the SL-PRS transmission to be received, it cannot complete the reception and decoding of the SL-PRS, and thus cannot complete the direct link positioning based on the SL-PRS.

[0231] In order to solve the above-mentioned technical problems, the embodiments of the present application provide information transmission methods, devices, equipment and media, wherein the methods and devices are based on the same application concept. Since the principles of solving problems by the methods and devices are similar, the implementation of the devices and methods can refer to each other, and the repeated parts will not be repeated.

[0232] like Figure 2 As shown, it is a flow chart of the information transmission method provided in the embodiment of the present application, which is applied to a first communication device, specifically, the first communication device is a first terminal or a base station. The method may specifically include:

[0233] Step 201: Send first control information to a second terminal, where the first control information includes at least one of the following information:

[0234] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0235] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the physical direct link shared channel PSSCH;

[0236] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0237] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0238] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0239] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0240] In some embodiments, the second level SCI is used to indicate SL-PRS resource information.

[0241] Specifically, the first indication information is used to indicate the type of the second-level SCI in the shared resource pool.

[0242] In an optional implementation manner, the first indication information is a reserved field value of a first field in the first-level SCI; wherein the first field is used to indicate a format of the second-level SCI;

[0243] Specifically, the reserved field value of the first field is 11, which is used to indicate the type of the second-level SCI. That is, the field "second-level SCI format" (first field) in the first-level SCI = 11, indicating the type of the second-level SCI, which is used to indicate the SL-PRS resource information.

[0244] In another optional implementation, the first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

[0245] Specifically, the first format is represented by the preset field value of the first field in the first-level SCI, wherein the preset field value of the first field is 10, that is, the field "second-level SCI format" (first field) in the first-level SCI = 10, and the first format is the second-level SCI format 2-C.

[0246] Further, in the case where the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information; that is, the second-level SCI format 2-C retains its original purpose.

[0247] When the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the SL-PRS resource information. That is, at this time, the first format is a new format, that is, the second-level SCI format 2-C is a new format for indicating the SL-PRS resource information, and belongs to a new type of the second-level SCI.

[0248] Example 1

[0249] 1. Terminal A sends first control information to terminal B, where the first control information includes first indication information.

[0250] 2. Terminal B receives the SL-PRS and / or PSSCH sent by terminal A according to the first control information.

[0251] The first indication information indicates the type of the second-level SCI used to indicate the SL-PRS resource information in the shared resource pool. The first indication information is carried by the first-level SCI. Regarding how the first-level SCI carries the first indication information, the following two candidate solutions are included.

[0252] Candidate solution 1: The first indication information uses the reserved field value of the field "Format of second level SCI" in the first level SCI, that is, the field "Format of second level SCI" in the first level SCI = 11, to indicate the type of second level SCI used to indicate SL-PRS resource information.

[0253] Candidate solution 2: Set the field "Format of second-level SCI" in the first-level SCI = 10, that is, 10 corresponds to the second-level SCI format 2-C; the first indication information uses the reserved bits in the second-level SCI format 2-C to indicate whether the second SCI is used to indicate SL-PRS resource information.

[0254] Specifically, when the reserved bit = 0, the second-level SCI format 2-C maintains its original purpose, that is, the second-level SCI format 2-C is used to indicate inter-user coordination information.

[0255] When the reserved bit = 1, the second-level SCI format 2-C is a new format used to indicate SL-PRS resource information and belongs to a new type of second-level SCI.

[0256] For candidate solution 1, as shown in Table 1, the first-level SCI contains the field "second-level SCI format", and this field has four possible values, namely 00, 01, 10, and 11. The meaning of each value is shown in the following table. For example, when the value of this field is 10, it means that the format of the second-level SCI is SCI format 2-C. When the value of this field is 11 (reserved field value), this is a reserved state, that is, no meaning has been assigned to this value. At this time, in order to indicate the type of the second-level SCI used to indicate SL PRS resource information in the shared resource pool, the reserved state of the field "second-level SCI format" in the first-level SCI = 11 is used to indicate the new type of the second-level SCI. For example, it can be used to indicate SCI format2-D, as shown in Table 2.

[0257] Table 1: Fields in the first level SCI "Second level SCI format" (reserved status not used)

[0258] The value of the field "Second level SCI format" The second level SCI format represented 00 SCI format 2-A 01 SCI format 2-B 10 SCI format 2-C 11 reserve

[0259] Table 2: Field "Second Level SCI Format" in the First Level SCI (reserved for use)

[0260] The value of the field "Second level SCI format" The second level SCI format represented 00 SCI format 2-A 01 SCI format 2-B 10 SCI format 2-C 11 SCI format 2-D

[0261] In this embodiment, the terminal determines the type of the second-level SCI used to indicate SL-PRS resource information in the shared resource pool according to the first indication information, so that the terminal can complete the reception and decoding of SL-PRS according to the first indication information, and complete the direct link positioning according to SL-RPS.

[0262] In some embodiments, the second indication information is used to indicate:

[0263] The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or,

[0264] In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0265] Example 2

[0266] 1. Terminal A or the base station sends first control information to terminal B, where the first control information includes second indication information and third indication information.

[0267] 2. Terminal B receives the SL-PRS and / or PSSCH sent by terminal A according to the first control information.

[0268] Among them, the second indication information indicates the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH.

[0269] Specifically, the candidate solutions corresponding to the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH are as follows:

[0270] Candidate solution 1: In one time slot, both PSSCH and SL-PRS resources are included, and the OFDM symbol occupied by the PSSCH is located before the OFDM symbol occupied by the SL-PRS resource.

[0271] Candidate solution 2: In one time slot, both PSSCH and SL-PRS resources are included, and the OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resources.

[0272] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH.

[0273] Specifically, the candidate solutions corresponding to the third indication information are as follows:

[0274] Candidate solution 1: The third indication information indicates the time domain position of the SL-PRS resources included in the second-level SCI; in this way, the terminal can determine the time domain position of the PSSCH based on the time domain position of the "PSSCH+SL PRS resources" in the first-level SCI.

[0275] Candidate solution 2: The third indication information indicates the time domain position of the PSSCH included in the second-level SCI; in this way, the terminal can determine the time domain position of the SL-PRS resource based on the time domain position of the "PSSCH+SL PRS resource" in the first-level SCI.

[0276] like Figure 3 As shown in the figure, each small square in the figure represents a physical resource block (PRB) in the frequency domain and an OFDM symbol in the time domain. A subchannel consists of 4 PRBs. PSSCH uses 6 OFDM symbols (symbols #4 to #9) in the time domain and 8 PRBs in the frequency domain, namely PRB #1 to #8. These 8 PRBs form two subchannels.

[0277] SL-PRS resources use 4 OFDM symbols (symbols #10 to #13) in the time domain and 8 PRBs (PRB #1 to #8) in the frequency domain. PSCCH uses 2 OFDM symbols (symbols #2 to #3) in the time domain and 4 PRBs (PRB #1 to #4) in the frequency domain. PSCCH carries the first level SCI. PSSCH carries the second level SCI and SL-SCH data.

[0278] The second indication information indicates the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH. This relative relationship is that the SL-PRS resource is before or after the PSSCH. Figure 3 As shown, in a time slot of the shared resource pool, both PSSCH and SL-PRS resources are included, and the OFDM symbol occupied by the PSSCH is located before the OFDM symbol occupied by the SL-PRS resource.

[0279] like Figure 4 As shown, in a time slot of the shared resource pool, both PSSCH and SL-PRS resources are included, and the OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0280] In addition, in the first-level SCI, the time domain position of the "PSSCH+SL-PRS resource" is indicated, that is, the specific time slot number. However, terminal B does not know which time slots are used to transmit PSSCH and which time slots are used to transmit SL-PRS resources in the time slot. At this time, the time domain position occupied by PSSCH or the time domain position occupied by SL-PRS resources is indicated by the third indication information, so that terminal B can obtain the time domain position of SL-PRS or PSSCH. In this way, there are the following two candidate solutions:

[0281] Candidate solution 1: The third indication information indicates the time domain position of the SL-PRS resources included in the second-level SCI; in this way, the terminal can determine the time domain position of the PSSCH based on the time domain position of the "PSSCH+SL PRS resources" in the first-level SCI.

[0282] Candidate solution 2: The third indication information indicates the time domain position of the PSSCH included in the second-level SCI; in this way, the terminal can determine the time domain position of the SL PRS resource according to the time domain position of the "PSSCH+SL PRS resource" in the first-level SCI.

[0283] In this embodiment, the terminal determines the relative relationship between the time domain position of the SL-PRS resource in the shared resource pool and the time domain position of the PSSCH, as well as the time domain position of the SL-PRS based on the second indication information and the third indication information, so that the terminal can complete the reception and decoding of the SL-PRS according to the second indication information and the third indication information, and complete the direct link positioning based on the SL-PRS.

[0284] In some embodiments, the fourth indication information is used to indicate:

[0285] The index number of the first OFDM symbol occupied by the SL-PRS resource; or

[0286] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or

[0287] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0288] Example 3

[0289] 1. Terminal A or a base station sends first control information to terminal B, where the first control information contains fourth indication information; wherein the fourth indication information indicates the time domain position of the SL-PRS resource in the shared resource pool.

[0290] 2. Terminal B receives the SL-PRS and / or PSSCH sent by terminal A according to the first control information.

[0291] Specifically, the fourth instruction information is as follows:

[0292] The fourth indication information only indicates the index number of the first OFDM symbol occupied by the SL-PRS resource, while the SL-PRS resource will occupy all remaining available OFDM symbols in the time slot. Or,

[0293] The fourth indication information indicates the index number of the first OFDM symbol occupied by the SL-PRS resource and the number of OFDM symbols occupied by the SL-PRS resource.

[0294] The fourth indication information indicates the index number of the first OFDM symbol occupied by the SL-PRS resource and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0295] like Figure 5As shown in the figure, each small square represents a PRB in the frequency domain and an OFDM symbol in the time domain. A subchannel consists of 4 PRBs. PSSCH uses 6 OFDM symbols (symbols #4 to #9) in the time domain and 8 PRBs in the frequency domain, namely PRB #1 to #8. These 8 PRBs form two subchannels.

[0296] SL-PRS resources use 4 OFDM symbols (symbols #10 to #13) in the time domain and 8 PRBs (PRB #1 to #8) in the frequency domain. PSCCH uses 2 OFDM symbols (symbols #2 to #3) in the time domain and 4 PRBs (PRB #1 to #4) in the frequency domain. PSCCH carries the first level SCI. PSSCH carries the second level SCI and SL-SCH data.

[0297] For example, the fourth indication information indicates the index number of the first OFDM symbol occupied by the SL-PRS resource (ie: Figure 5 The index number of the last OFDM symbol occupied by the SL-PRS resource (i.e.: Figure 5 The ending OFDM symbol in the graph is indexed as #13).

[0298] In this embodiment, the terminal determines the time domain position of the SL-PRS resource in the shared resource pool according to the fourth indication information, so that the terminal can complete the reception and decoding of the SL-PRS according to the fourth indication information, and complete the direct link positioning according to the SL-PRS.

[0299] In some embodiments, the fifth indication information is used to indicate:

[0300] The index number of the first OFDM symbol occupied by the PSSCH; or

[0301] The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or

[0302] The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

[0303] Example 4

[0304] 1. Terminal A or a base station sends first control information to terminal B, where the first control information includes fifth indication information; wherein the fifth indication information indicates the time domain position of the PSSCH in the shared resource pool.

[0305] 2. Terminal B receives the SL-PRS and / or PSSCH sent by terminal A according to the first control information.

[0306] Specifically, the fifth indication information is as follows:

[0307] The fifth indication information only indicates the last OFDM symbol index number occupied by the PSSCH, while the PSSCH will occupy all remaining available OFDM symbols in the time slot; or,

[0308] The fifth indication information indicates the first OFDM symbol index number occupied by the PSSCH and the number of OFDM symbols occupied by the PSSCH; or,

[0309] The fifth indication information indicates the first OFDM symbol index number occupied by the PSSCH and the last OFDM symbol index number occupied by the PSSCH.

[0310] like Figure 6 As shown in the figure, each small square represents a PRB in the frequency domain and an OFDM symbol in the time domain. A subchannel consists of 4 PRBs. PSSCH uses 6 OFDM symbols (symbols #4 to #9) in the time domain and 8 PRBs in the frequency domain, namely PRB #1 to #8. These 8 PRBs form two subchannels.

[0311] SL-PRS resources use 4 OFDM symbols (symbols #10 to #13) in the time domain and 8 PRBs (PRB #1 to #8) in the frequency domain. PSCCH uses 2 OFDM symbols (symbols #2 to #3) in the time domain and 4 PRBs (PRB #1 to #4) in the frequency domain. PSCCH carries the first level SCI. PSSCH carries the second level SCI and SL-SCH data.

[0312] For example, the fifth indication information indicates the first OFDM symbol index number occupied by the PSSCH (ie: Figure 6 The starting OFDM symbol in the PSSCH is indexed as #4), and the last OFDM symbol index occupied by the PSSCH (ie: Figure 6 The ending OFDM symbol in the graph is indexed as #9).

[0313] In this embodiment, the terminal determines the time domain position of the PSSCH in the shared resource pool according to the fifth indication information, so that the terminal can complete the reception and decoding of the SL-PRS according to the fifth indication information, and complete the direct link positioning according to the SL-PRS.

[0314] It should be noted that, corresponding to the sixth indication information, the index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0315] The number of OFDM symbols occupied by the SL-PRS resource;

[0316] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0317] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0318] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0319] Further, when the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

[0320] Example 5

[0321] 1. Terminal A or a base station sends first control information to terminal B, where the first control information contains sixth indication information, where the sixth indication information indicates an index number of an SL-PRS resource in a shared resource pool;

[0322] 2. Terminal B receives the SL-PRS and / or PSSCH sent by terminal A according to the first control information.

[0323] Specifically, the sixth indication information is as follows:

[0324] The sixth indication information is the index number of the SL-PRS resource. The terminal indicates the time domain position of the SL-PRS resource through the index number of the SL-PRS resource. The index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0325] The number of OFDM symbols occupied by the SL-PRS resource;

[0326] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0327] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0328] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0329] When the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the terminal assumes that the SL-PRS resource is placed after the PSSCH and must be placed at the beginning of the next OFDM symbol of the PSSCH, see Figure 7 .

[0330] That is to say, the time domain resource information occupied by the SL-PRS resource is indicated by means of the SL-PRS resource ID, which is an implicit indication method. Since the SL-PRS resource ID corresponds one-to-one to the information of the symbol occupied by the SL-PRS resource, the time domain resource information occupied by the SL-PRS resource can be indicated by the SL-PRS resource ID. If the offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH is not used, the terminal needs to assume that the SL-PRS resource is placed after the PSSCH and must be placed starting from the next OFDM symbol of the PSSCH, that is, the offset is 0.

[0331] In this embodiment, the terminal determines the time domain position of the SL-PRS in the shared resource pool according to the sixth indication information, so that the terminal can complete the reception and decoding of the SL-PRS according to the sixth indication information, and complete the direct link positioning according to the SL-PRS.

[0332] In some embodiments, the first control information is carried by at least one of the following information:

[0333] First level SCI;

[0334] Level II SCI;

[0335] Downlink control information DCI;

[0336] Radio Resource Control (RRC) signaling;

[0337] Straight-through Link Positioning Protocol SLPP signaling.

[0338] Example 6

[0339] 1. Terminal A or a base station sends first control information to terminal B, where the first control information contains at least one of first indication information, second indication information, third indication information, fourth indication information, fifth indication information and sixth indication information.

[0340] 2. Terminal B receives the SL-PRS and / or PSSCH sent by terminal A according to the first control information.

[0341] Specifically, the carrier information of the first control information is as follows:

[0342] The first control information is carried by the first level SCI, such as SCI format 1A;

[0343] The first control information is carried by the second-level SCI, such as SCI format 2D;

[0344] The first control information is carried by downlink control information (Downlink Control Information, DCI);

[0345] The first control information is carried by Radio Resource Control (RRC) signaling, such as PC5RRC signaling;

[0346] The first control information is carried by Sidelink Positioning Protocol (SLPP) signaling;

[0347] The first control information is carried by a mixed combination of the above multiple carriers, such as the first indication information is indicated by the first-level SCI, the second indication information is indicated by the PC5 RRC signaling, and the third indication information is carried by the SLPP signaling.

[0348] like Figure 8 As shown, terminal A sends the first control information to terminal B. If SCI is used for carrying, since SCI is directly carried through the physical layer channel, the latency is low, but the physical layer signaling overhead is high. If RRC or SLPP high-level signaling is used for carrying, the physical layer signaling will not be occupied, but the latency is high. The first control information can also be carried by a mixed carrier of the above multiple carriers, such as the first indication information is indicated by the first-level SCI, the second indication information is indicated by the PC5 RRC signaling, and the third indication information is carried by the SLPP signaling, so that a balance between the physical layer signaling overhead and the latency can be achieved.

[0349] In this embodiment, the terminal selects a suitable method for carrying the first control information based on a comprehensive consideration of the physical layer signaling overhead and delay, so that the terminal can send or receive SL PRS according to the first control information and complete direct link positioning while meeting the requirements of physical layer signaling overhead and delay.

[0350] The information transmission method of the embodiment of the present application sends first control information to the second terminal, wherein the first control information includes at least one of the following information: first indication information, used to indicate the type of the second-level SCI; second indication information, used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; third indication information, used to indicate that the second-level SCI contains the time domain position of the SL-PRS resource or contains the time domain position of the PSSCH; fourth indication information, used to indicate the time domain position of the SL-PRS resource; fifth indication information, used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; sixth indication information, used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource; in this way, when the SL-PRS is transmitted in the shared resource pool, the terminal can correctly receive the SL-PRS through the time domain position indication of the SL-PRS resource in the first control information, thereby completing the direct link positioning.

[0351] like Fig. 9 , which is a flow chart of the information transmission method provided in the embodiment of the present application, and is applied to the second terminal. The method may specifically include:

[0352] Step 901, receiving first control information sent by a first communication device;

[0353] Step 902: receiving a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by a first terminal according to the first control information;

[0354] The first control information includes at least one of the following information:

[0355] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0356] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH;

[0357] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0358] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0359] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0360] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0361] In some embodiments, the second level SCI is used to indicate SL-PRS resource information.

[0362] Specifically, the first indication information is used to indicate the type of the second-level SCI in the shared resource pool.

[0363] In an optional implementation manner, the first indication information is a reserved field value of a first field in the first-level SCI; wherein the first field is used to indicate a format of the second-level SCI;

[0364] Specifically, the reserved field value of the first field is 11, which is used to indicate the type of the second-level SCI. That is, the field "second-level SCI format" (first field) in the first-level SCI = 11, indicating the type of the second-level SCI, which is used to indicate the SL-PRS resource information.

[0365] In another optional implementation, the first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

[0366] Specifically, the first format is represented by the preset field value of the first field in the first-level SCI, wherein the preset field value of the first field is 10, that is, the field "second-level SCI format" (first field) in the first-level SCI = 10, and the first format is the second-level SCI format 2-C.

[0367] Further, in the case where the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information; that is, the second-level SCI format 2-C retains its original purpose.

[0368] When the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the SL-PRS resource information. That is, at this time, the first format is a new format, that is, the second-level SCI format 2-C is a new format for indicating the SL-PRS resource information, and belongs to a new type of the second-level SCI.

[0369] In some embodiments, the second indication information is used to indicate:

[0370] The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or,

[0371] In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0372] In some embodiments, the fourth indication information is used to indicate:

[0373] The index number of the first OFDM symbol occupied by the SL-PRS resource; or

[0374] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or

[0375] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0376] In some embodiments, the fifth indication information is used to indicate:

[0377] The index number of the last OFDM symbol occupied by the PSSCH; or,

[0378] The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or

[0379] The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

[0380] It should be noted that, corresponding to the sixth indication information, the index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0381] The number of OFDM symbols occupied by the SL-PRS resource;

[0382] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0383] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0384] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0385] Further, when the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

[0386] In an optional embodiment, the above step 901, receiving the first control information sent by the first communication device, may include:

[0387] Receiving first control information sent by a first communication device through at least one of the following information:

[0388] First level SCI;

[0389] Level II SCI;

[0390] Downlink control information DCI;

[0391] Radio Resource Control (RRC) signaling;

[0392] Straight-through Link Positioning Protocol SLPP signaling.

[0393] In an optional embodiment, the first control information includes the first indication information; accordingly, the above step 902, receiving the direct link positioning reference signal SL-PRS sent by the first terminal according to the first control information, may include:

[0394] Determine the type of the second-level SCI according to the first indication information;

[0395] Determine the time domain position of the SL-PRS resource according to the type of the second-level SCI;

[0396] Receive the SL-PRS sent by the first terminal according to the time domain position of the SL-PRS resource.

[0397] In an optional embodiment, the first control information includes the second indication information and the third indication information; accordingly, the above step 902, according to the first control information, receiving the direct link positioning reference signal SL-PRS and / or the physical direct link shared channel PSSCH sent by the first terminal, may include:

[0398] Determine the time domain position of the SL-PRS resource and / or the time domain position of the PSSCH according to the second indication information, the third indication information and the first-level SCI; wherein the first-level SCI is used to indicate the time domain position of the PSSCH and the SL-PRS resource;

[0399] receiving the SL-PRS sent by the first terminal according to the time domain position of the SL-PRS resource; and / or,

[0400] According to the time domain position of the PSSCH, the PSSCH sent by the first terminal is received.

[0401] Specifically, Figure 4The example shown shows that in a time slot of the shared resource pool, both PSSCH and SL-PRS resources are included, and the OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resources (ie, the second indication information).

[0402] In addition, in the first-level SCI, the time domain position of the "PSSCH+SL-PRS resource" is indicated, that is, the specific time slot number. However, terminal B does not know which time slots are used to transmit PSSCH and which time slots are used to transmit SL-PRS resources in the time slot. At this time, the time domain position occupied by PSSCH or the time domain position occupied by SL-PRS resources is indicated by the third indication information, so that terminal B can obtain the time domain position of SL-PRS or PSSCH. In this way, there are the following two candidate solutions:

[0403] Candidate solution 1: The third indication information indicates the time domain position of the SL-PRS resources included in the second-level SCI; in this way, the terminal can determine the time domain position of the PSSCH based on the time domain position of the "PSSCH+SL PRS resources" in the first-level SCI.

[0404] Candidate solution 2: The third indication information indicates the time domain position of the PSSCH included in the second-level SCI; in this way, the terminal can determine the time domain position of the SL PRS resource according to the time domain position of the "PSSCH+SL PRS resource" in the first-level SCI.

[0405] In an optional embodiment, the first control information includes the fifth indication information; accordingly, the above step 902, receiving a physical direct link shared channel PSSCH sent by the first terminal according to the first control information, may include:

[0406] Determine the time domain position of the PSSCH according to the fifth indication information;

[0407] According to the time domain position of the PSSCH, the PSSCH sent by the first terminal is received.

[0408] In an optional embodiment, the first control information includes the fourth indication information or the sixth indication information; accordingly, the above step 902, according to the first control information, receiving the direct link positioning reference signal SL-PRS sent by the first terminal, may include:

[0409] Determine, according to the fourth indication information or the sixth indication information, a time domain position of the SL-PRS resource;

[0410] The SL-PRS sent by the first terminal is received according to the time domain position of the SL-PRS resource.

[0411] The information transmission method of the embodiment of the present application receives first control information sent by a first communication device; according to the first control information, receives a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by a first terminal; wherein the first control information includes at least one of the following information: first indication information for indicating the type of the second-level SCI; second indication information for indicating the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; third indication information for indicating that the time domain position of the SL-PRS resource is included in the second-level SCI or The first control information includes the time domain position of the PSSCH; the fourth indication information is used to indicate the time domain position of the SL-PRS resource; the fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; the sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource; in this way, when the SL-PRS is transmitted in the shared resource pool, the terminal can correctly receive the SL-PRS through the time domain position indication of the SL-PRS resource in the first control information, thereby completing the direct link positioning.

[0412] like Fig.10 As shown, the embodiment of the present application further provides a communication device, which is a first communication device, including: a memory 1020, a transceiver 1000, and a processor 1010: the memory 1020 is used to store program instructions; the transceiver 1000 is used to send and receive data under the control of the processor 1010; and performs the following operations:

[0413] Sending first control information to the second terminal, where the first control information includes at least one of the following information:

[0414] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0415] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the physical direct link shared channel PSSCH;

[0416] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0417] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0418] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0419] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0420] Among them, Fig.10 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1010 and memory represented by memory 1020. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1000 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including, these transmission media include wireless channels, wired channels, optical cables and other transmission media.

[0421] The processor 1010 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1010 when performing operations.

[0422] Optionally, the processor 1010 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor 1010 may also adopt a multi-core architecture.

[0423] When the communication device is the first terminal, for different user devices, the user interface 1030 can also be an interface that can connect external or internal devices as required, and the connected devices include but are not limited to a keypad, display, speaker, microphone, joystick, etc.

[0424] The processor 1010 is used to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the program instructions stored in the memory. The processor 1010 and the memory 1020 can also be arranged physically separately.

[0425] In some embodiments, the first indication information is a reserved field value of a first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or,

[0426] The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

[0427] In some embodiments, when the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information;

[0428] In the case where the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

[0429] In some embodiments, the second level SCI is used to indicate SL-PRS resource information.

[0430] In some embodiments, the second indication information is used to indicate:

[0431] The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or,

[0432] In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0433] In some embodiments, the fourth indication information is used to indicate:

[0434] The index number of the first OFDM symbol occupied by the SL-PRS resource; or

[0435] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or

[0436] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0437] In some embodiments, the fifth indication information is used to indicate:

[0438] The index number of the last OFDM symbol occupied by the PSSCH; or,

[0439] The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or

[0440] The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

[0441] In some embodiments, the index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0442] The number of OFDM symbols occupied by the SL-PRS resource;

[0443] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0444] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0445] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0446] In some embodiments, when the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

[0447] In some embodiments, the first control information is carried by at least one of the following information:

[0448] First level SCI;

[0449] Level II SCI;

[0450] Downlink control information DCI;

[0451] Radio Resource Control (RRC) signaling;

[0452] Straight-through Link Positioning Protocol SLPP signaling.

[0453] The communication device of the embodiment of the present application sends the first control information to the second terminal, wherein the first control information includes at least one of the following information: first indication information, used to indicate the type of the second-level SCI; second indication information, used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; third indication information, used to indicate that the second-level SCI contains the time domain position of the SL-PRS resource or the time domain position of the PSSCH; fourth indication information, used to indicate the time domain position of the SL-PRS resource; fifth indication information, used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; sixth indication information, used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource; in this way, when the SL-PRS is transmitted in the shared resource pool, the terminal can correctly receive the SL-PRS through the time domain position indication of the SL-PRS resource in the first control information, thereby completing the direct link positioning.

[0454] like Fig.11As shown, the embodiment of the present application also provides an information transmission device, including:

[0455] The first sending unit 1101 is configured to send first control information to the second terminal, where the first control information includes at least one of the following information:

[0456] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0457] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the physical direct link shared channel PSSCH;

[0458] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0459] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0460] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0461] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0462] In some embodiments, the first indication information is a reserved field value of a first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or,

[0463] The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

[0464] In some embodiments, when the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information;

[0465] In the case where the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

[0466] In some embodiments, the second level SCI is used to indicate SL-PRS resource information.

[0467] In some embodiments, the second indication information is used to indicate:

[0468] The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or,

[0469] In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0470] In some embodiments, the fourth indication information is used to indicate:

[0471] The index number of the first OFDM symbol occupied by the SL-PRS resource; or

[0472] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or

[0473] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0474] In some embodiments, the fifth indication information is used to indicate:

[0475] The index number of the last OFDM symbol occupied by the PSSCH; or,

[0476] The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or

[0477] The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

[0478] In some embodiments, the index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0479] The number of OFDM symbols occupied by the SL-PRS resource;

[0480] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0481] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0482] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0483] In some embodiments, when the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

[0484] In some embodiments, the first control information is carried by at least one of the following information:

[0485] First level SCI;

[0486] Level II SCI;

[0487] Downlink control information DCI;

[0488] Radio Resource Control (RRC) signaling;

[0489] Straight-through Link Positioning Protocol SLPP signaling.

[0490] The information transmission device of the embodiment of the present application sends first control information to the second terminal, wherein the first control information includes at least one of the following information: first indication information, used to indicate the type of the second-level SCI; second indication information, used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; third indication information, used to indicate that the second-level SCI contains the time domain position of the SL-PRS resource or the time domain position of the PSSCH; fourth indication information, used to indicate the time domain position of the SL-PRS resource; fifth indication information, used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; sixth indication information, used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource; in this way, when the SL-PRS is transmitted in the shared resource pool, the terminal can correctly receive the SL-PRS through the time domain position indication of the SL-PRS resource in the first control information, thereby completing the direct link positioning.

[0491] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0492] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0493] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0494] In some embodiments of the present application, a processor-readable storage medium is further provided, wherein the processor-readable storage medium stores program instructions, and the program instructions are used to enable the processor to execute the following steps:

[0495] Sending first control information to the second terminal, where the first control information includes at least one of the following information:

[0496] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0497] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the physical direct link shared channel PSSCH;

[0498] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0499] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0500] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0501] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0502] When the program is executed by the processor, the above application can be realized. Figure 2 To avoid repetition, all implementations of the method embodiment on the communication device side are not described again here.

[0503] like Fig.12 As shown, the embodiment of the present application further provides a terminal, which is a second terminal, including: a memory 1220, a transceiver 1200, and a processor 1210: the memory 1220 is used to store a computer program; the transceiver 1200 is used to send and receive data under the control of the processor 1210, and perform the following operations:

[0504] Receiving first control information sent by a first communication device;

[0505] According to the first control information, receiving a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal;

[0506] The first control information includes at least one of the following information:

[0507] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0508] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH;

[0509] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0510] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0511] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0512] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0513] Among them, Fig.12In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1210 and various circuits of memory represented by memory 1220 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1200 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including wireless channels, wired channels, optical cables, and other transmission media. For different user devices, the user interface 1230 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0514] The processor 1210 is responsible for managing the bus architecture and general processing, and the memory 1220 can store data used by the processor 1210 when performing operations.

[0515] Optionally, the processor 1210 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor 1210 may also adopt a multi-core architecture.

[0516] The processor 1210 is used to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the program instructions stored in the memory. The processor 1210 and the memory 1220 can also be arranged physically separately.

[0517] In some embodiments, the first indication information is a reserved field value of a first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or,

[0518] The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

[0519] In some embodiments, when the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information;

[0520] In the case where the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

[0521] In some embodiments, the second level SCI is used to indicate SL-PRS resource information.

[0522] In some embodiments, the second indication information is used to indicate:

[0523] The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or,

[0524] In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0525] In some embodiments, the fourth indication information is used to indicate:

[0526] The index number of the first OFDM symbol occupied by the SL-PRS resource; or

[0527] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or

[0528] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0529] In some embodiments, the fifth indication information is used to indicate:

[0530] The index number of the last OFDM symbol occupied by the PSSCH; or,

[0531] The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or

[0532] The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

[0533] In some embodiments, the index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0534] The number of OFDM symbols occupied by the SL-PRS resource;

[0535] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0536] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0537] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0538] In some embodiments, when the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

[0539] In some embodiments, the transceiver 1200 is further configured to:

[0540] Receiving first control information sent by a first communication device through at least one of the following information:

[0541] First level SCI;

[0542] Level II SCI;

[0543] Downlink control information DCI;

[0544] Radio Resource Control (RRC) signaling;

[0545] Straight-through Link Positioning Protocol SLPP signaling.

[0546] In some embodiments, the first control information includes the first indication information; the processor 1210 is further configured to:

[0547] Determine the type of the second-level SCI according to the first indication information;

[0548] Determine the time domain position of the SL-PRS resource according to the type of the second-level SCI;

[0549] The SL-PRS sent by the first terminal is received by the transceiver according to the time domain position of the SL-PRS resource.

[0550] In some embodiments, the first control information includes the second indication information and the third indication information; the processor 1210 is further configured to:

[0551] Determine the time domain position of the SL-PRS resource and / or the time domain position of the PSSCH according to the second indication information, the third indication information and the first-level SCI; wherein the first-level SCI is used to indicate the time domain position of the PSSCH and the SL-PRS resource;

[0552] The transceiver 1200 is also used for:

[0553] receiving the SL-PRS sent by the first terminal according to the time domain position of the SL-PRS resource; and / or,

[0554] According to the time domain position of the PSSCH, the PSSCH sent by the first terminal is received.

[0555] In some embodiments, the first control information includes the fifth indication information; the processor 1210 is further configured to:

[0556] Determine the time domain position of the PSSCH according to the fifth indication information;

[0557] According to the time domain position of the PSSCH, the PSSCH sent by the first terminal is received by the transceiver 1200.

[0558] In some embodiments, the first control information includes the fourth indication information or the sixth indication information; the processor 1210 is further configured to:

[0559] Determine, according to the fourth indication information or the sixth indication information, a time domain position of the SL-PRS resource;

[0560] The SL-PRS sent by the first terminal is received by the transceiver 1200 according to the time domain position of the SL-PRS resource.

[0561] The terminal of the embodiment of the present application receives the first control information sent by the first communication device; according to the first control information, receives the direct link positioning reference signal SL-PRS and / or the physical direct link shared channel PSSCH sent by the first terminal; wherein the first control information includes at least one of the following information: first indication information, used to indicate the type of the second-level SCI; second indication information, used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; third indication information, used to indicate that the time domain position of the SL-PRS resource is included in the second-level SCI or the time domain position of the PSSCH is included. The first control information contains the time domain position of PSSCH; the fourth indication information is used to indicate the time domain position of SL-PRS resources; the fifth indication information is used to indicate the time domain position of PSSCH in the same time slot as the SL-PRS resources; the sixth indication information is used to indicate the index number of the SL-PRS resources, and the index number of the SL-PRS resources is used to indicate the time domain position of the SL-PRS resources; in this way, when SL-PRS is transmitted in the shared resource pool, the terminal can correctly receive the SL-PRS through the time domain position indication of the SL-PRS resources in the first control information, thereby completing the direct link positioning.

[0562] like Fig.13 As shown, the present application also provides an information transmission device, including:

[0563] The first receiving unit 1301 is configured to receive first control information sent by a first communication device;

[0564] The second receiving unit 1302 is configured to receive a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal according to the first control information;

[0565] The first control information includes at least one of the following information:

[0566] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0567] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH;

[0568] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0569] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0570] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0571] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0572] In some embodiments, the first indication information is a reserved field value of a first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or,

[0573] The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

[0574] In some embodiments, when the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information;

[0575] In the case where the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

[0576] In some embodiments, the second level SCI is used to indicate SL-PRS resource information.

[0577] In some embodiments, the second indication information is used to indicate:

[0578] The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or,

[0579] In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

[0580] In some embodiments, the fourth indication information is used to indicate:

[0581] The index number of the first OFDM symbol occupied by the SL-PRS resource; or

[0582] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or

[0583] The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

[0584] In some embodiments, the fifth indication information is used to indicate:

[0585] The index number of the last OFDM symbol occupied by the PSSCH; or,

[0586] The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or

[0587] The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

[0588] In some embodiments, the index number of the SL-PRS resource corresponds one-to-one to at least one of the following information:

[0589] The number of OFDM symbols occupied by the SL-PRS resource;

[0590] The index number of the first OFDM symbol occupied by the SL-PRS resource;

[0591] The index number of the last OFDM symbol occupied by the SL-PRS resource;

[0592] The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

[0593] In some embodiments, when the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

[0594] In some embodiments, the first receiving unit 1301 is specifically configured to:

[0595] Receiving first control information sent by a first communication device through at least one of the following information:

[0596] First level SCI;

[0597] Level II SCI;

[0598] Downlink control information DCI;

[0599] Radio Resource Control (RRC) signaling;

[0600] Straight-through Link Positioning Protocol SLPP signaling.

[0601] In some embodiments, the first control information includes the first indication information; the second receiving unit 1302 is specifically configured to:

[0602] Determine the type of the second-level SCI according to the first indication information;

[0603] Determine the time domain position of the SL-PRS resource according to the type of the second-level SCI;

[0604] Receive the SL-PRS sent by the first terminal according to the time domain position of the SL-PRS resource.

[0605] In some embodiments, the first control information includes the second indication information and the third indication information; the second receiving unit 1302 is specifically used to:

[0606] Determine the time domain position of the SL-PRS resource and / or the time domain position of the PSSCH according to the second indication information, the third indication information and the first-level SCI; wherein the first-level SCI is used to indicate the time domain position of the PSSCH and the SL-PRS resource;

[0607] receiving the SL-PRS sent by the first terminal according to the time domain position of the SL-PRS resource; and / or,

[0608] According to the time domain position of the PSSCH, the PSSCH sent by the first terminal is received.

[0609] In some embodiments, the first control information includes the fifth indication information; the second receiving unit 1302 is specifically configured to:

[0610] Determine the time domain position of the PSSCH according to the fifth indication information;

[0611] According to the time domain position of the PSSCH, the PSSCH sent by the first terminal is received.

[0612] In some embodiments, the first control information includes the fourth indication information or the sixth indication information; the second receiving unit 1302 is specifically configured to:

[0613] Determine, according to the fourth indication information or the sixth indication information, a time domain position of the SL-PRS resource;

[0614] The SL-PRS sent by the first terminal is received according to the time domain position of the SL-PRS resource.

[0615] The information transmission device of the embodiment of the present application receives the first control information sent by the first communication device; according to the first control information, receives the direct link positioning reference signal SL-PRS and / or the physical direct link shared channel PSSCH sent by the first terminal; wherein the first control information includes at least one of the following information: first indication information, used to indicate the type of the second-level SCI; second indication information, used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; third indication information, used to indicate the time domain position of the SL-PRS resource included in the second-level SCI or The first control information includes the time domain position of the PSSCH; the fourth indication information is used to indicate the time domain position of the SL-PRS resource; the fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; the sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource; in this way, when the SL-PRS is transmitted in the shared resource pool, the terminal can correctly receive the SL-PRS through the time domain position indication of the SL-PRS resource in the first control information, thereby completing the direct link positioning.

[0616] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0617] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0618] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0619] In some embodiments of the present application, a processor-readable storage medium is further provided, wherein the processor-readable storage medium stores program instructions, and the program instructions are used to enable the processor to execute the following steps:

[0620] Receiving first control information sent by a first communication device;

[0621] According to the first control information, receiving a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal;

[0622] The first control information includes at least one of the following information:

[0623] The first indication information is used to indicate the type of the second-level direct link control information SCI;

[0624] The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH;

[0625] The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH;

[0626] The fourth indication information is used to indicate the time domain position of the SL-PRS resource;

[0627] The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource;

[0628] The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

[0629] When the program is executed by the processor, the above application can be realized. Fig. 9 To avoid repetition, all implementation methods in the terminal side method embodiment shown are not described again here.

[0630] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, applicable systems can be global system of mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet radio service (General Packet Radio Service, GPRS) system, long-term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplex (Time Division Duplex, TDD) system, advanced long-term evolution (Long Term Evolution Advanced, LTE-A) system, universal mobile system (Universal Mobile Telecommunication System, UMTS), global interconnection microwave access (Worldwide interoperability for Microwave Access, WiMAX) system, 5G new air interface (New Radio, NR) system, etc. These various systems include terminal equipment and network equipment. The system may also include core network parts, such as the Evolved Packet System (EPS), 5G System (5GS), etc.

[0631] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0632] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the Long Term Evolution (Long Term Evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0633] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0634] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0635] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0636] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0637] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0638] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An information transmission method, applied to a first communication device, characterized in that: include: Sending first control information to the second terminal, wherein the first control information includes at least one of the following information: The first indication information is used to indicate the type of the second-level direct link control information SCI; The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the physical direct link shared channel PSSCH; The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH; The fourth indication information is used to indicate the time domain position of the SL-PRS resource; The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

2. The method according to claim 1, characterized in that The first indication information is a reserved field value of the first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or, The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

3. The method according to claim 2, characterized in that In the case where the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information; When the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

4. The method according to claim 1 or 2, characterized in that: The second-level SCI is used to indicate SL-PRS resource information.

5. The method according to any one of claims 1 to 3, characterized in that The second indication information is used to indicate: The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or, In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

6. The method according to any one of claims 1 to 3, characterized in that The fourth indication information is used to indicate: The index number of the first OFDM symbol occupied by the SL-PRS resource; or, The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or, The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

7. The method according to any one of claims 1 to 3, characterized in that The fifth indication information is used to indicate: The index number of the last OFDM symbol occupied by the PSSCH; or, The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

8. The method according to any one of claims 1 to 3, characterized in that The index number of the SL-PRS resource corresponds one-to-one to at least one of the following information: The number of OFDM symbols occupied by the SL-PRS resources; The index number of the first OFDM symbol occupied by the SL-PRS resource; The index number of the last OFDM symbol occupied by the SL-PRS resource; The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

9. The method according to any one of claims 1 to 3, characterized in that When the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

10. The method according to any one of claims 1 to 3, characterized in that The first control information is carried by at least one of the following information: First level SCI; Level II SCI; Downlink control information DCI; Radio Resource Control (RRC) signaling; Straight-through Link Positioning Protocol SLPP signaling.

11. An information transmission method, applied to a second terminal, characterized in that: include: Receiving first control information sent by a first communication device; According to the first control information, receiving a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal; The first control information includes at least one of the following information: The first indication information is used to indicate the type of the second-level direct link control information SCI; The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH; The fourth indication information is used to indicate the time domain position of the SL-PRS resource; The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

12. The method according to claim 11, characterized in that The first indication information is a reserved field value of the first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or, The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

13. The method according to claim 12, characterized in that In the case where the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information; When the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

14. The method according to claim 11 or 12, characterized in that: The second-level SCI is used to indicate SL-PRS resource information.

15. The method according to any one of claims 11 to 13, characterized in that The second indication information is used to indicate: The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or, In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

16. The method according to any one of claims 11 to 13, characterized in that The fourth indication information is used to indicate: The index number of the first OFDM symbol occupied by the SL-PRS resource; or, The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or, The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

17. The method according to any one of claims 11 to 13, characterized in that The fifth indication information is used to indicate: The index number of the last OFDM symbol occupied by the PSSCH; or, The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

18. The method according to any one of claims 11 to 13, characterized in that The index number of the SL-PRS resource corresponds one-to-one to at least one of the following information: The number of OFDM symbols occupied by the SL-PRS resources; The index number of the first OFDM symbol occupied by the SL-PRS resource; The index number of the last OFDM symbol occupied by the SL-PRS resource; The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

19. The method according to any one of claims 11 to 13, characterized in that When the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

20. The method according to any one of claims 11 to 13, characterized in that The receiving first control information sent by the first communication device includes: Receiving first control information sent by a first communication device through at least one of the following information: First level SCI; Level II SCI; Downlink control information DCI; Radio Resource Control (RRC) signaling; Straight-through Link Positioning Protocol SLPP signaling.

21. The method according to any one of claims 11 to 13, characterized in that The first control information includes the first indication information; The receiving, according to the first control information, a direct link positioning reference signal SL-PRS sent by the first terminal includes: Determine the type of the second-level SCI according to the first indication information; Determining the time domain position of the SL-PRS resource according to the type of the second-level SCI; Receive the SL-PRS sent by the first terminal according to the time domain position of the SL-PRS resource.

22. The method according to any one of claims 11 to 13, characterized in that The first control information includes the second indication information and the third indication information; The receiving, according to the first control information, a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal includes: Determine the time domain position of the SL-PRS resource and / or the time domain position of the PSSCH according to the second indication information, the third indication information and the first level SCI; wherein the first level SCI is used to indicate the time domain position of the PSSCH and the SL-PRS resource; receiving the SL-PRS sent by the first terminal according to the time domain position of the SL-PRS resource; and / or, The PSSCH sent by the first terminal is received according to the time domain position of the PSSCH.

23. The method according to claim 11, characterized in that The first control information includes the fifth indication information; The receiving, according to the first control information, a physical direct link shared channel PSSCH sent by the first terminal includes: Determine the time domain position of the PSSCH according to the fifth indication information; The PSSCH sent by the first terminal is received according to the time domain position of the PSSCH.

24. The method according to claim 11, characterized in that The first control information includes the fourth indication information or the sixth indication information; The receiving, according to the first control information, a direct link positioning reference signal SL-PRS sent by the first terminal includes: Determine, according to the fourth indication information or the sixth indication information, a time domain position of the SL-PRS resource; The SL-PRS sent by the first terminal is received according to the time domain position of the SL-PRS resource.

25. A communication device, the communication device being a first communication device, characterized in that: include: Memory, transceiver, processor: Memory, used to store program instructions; A transceiver, used for transmitting and receiving data under the control of the processor, and performing the following operations: Sending first control information to the second terminal, wherein the first control information includes at least one of the following information: The first indication information is used to indicate the type of the second-level direct link control information SCI; The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the physical direct link shared channel PSSCH; The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH; The fourth indication information is used to indicate the time domain position of the SL-PRS resource; The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

26. The communication device according to claim 25, characterized in that The first indication information is a reserved field value of the first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or, The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

27. The communication device according to claim 26, characterized in that In the case where the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information; When the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

28. The communication device according to claim 25 or 26, characterized in that: The second-level SCI is used to indicate SL-PRS resource information.

29. The communication device according to any one of claims 25 to 27, characterized in that: The second indication information is used to indicate: The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or, In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

30. The communication device according to any one of claims 25 to 27, characterized in that: The fourth indication information is used to indicate: The index number of the first OFDM symbol occupied by the SL-PRS resource; or, The index number of the first OFDM symbol occupied by the SL-PRS resource, and the number of OFDM symbols occupied by the SL-PRS resource; or, The index number of the first OFDM symbol occupied by the SL-PRS resource, and the index number of the last OFDM symbol occupied by the SL-PRS resource.

31. The communication device according to any one of claims 25 to 27, characterized in that: The fifth indication information is used to indicate: The index number of the last OFDM symbol occupied by the PSSCH; or, The index number of the first OFDM symbol occupied by the PSSCH, and the number of OFDM symbols occupied by the PSSCH; or The index number of the first OFDM symbol occupied by the PSSCH, and the index number of the last OFDM symbol occupied by the PSSCH.

32. The communication device according to any one of claims 25 to 27, characterized in that: The index number of the SL-PRS resource corresponds one-to-one to at least one of the following information: The number of OFDM symbols occupied by the SL-PRS resources; The index number of the first OFDM symbol occupied by the SL-PRS resource; The index number of the last OFDM symbol occupied by the SL-PRS resource; The offset between the first OFDM symbol occupied by the SL-PRS resource and the last OFDM symbol occupied by the PSSCH.

33. The communication device according to any one of claims 25 to 27, characterized in that: When the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource, the time domain position of the SL-PRS resource is located after the time domain position of the PSSCH, and the next OFDM symbol of the PSSCH is the first OFDM symbol of the SL-PRS resource.

34. The communication device according to any one of claims 25 to 27, characterized in that: The first control information is carried by at least one of the following information: First level SCI; Level II SCI; Downlink control information DCI; Radio Resource Control (RRC) signaling; Straight-through Link Positioning Protocol SLPP signaling.

35. An information transmission device, characterized in that: include: The first sending unit is configured to send first control information to the second terminal, wherein the first control information includes at least one of the following information: The first indication information is used to indicate the type of the second-level direct link control information SCI; The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the physical direct link shared channel PSSCH; The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH; The fourth indication information is used to indicate the time domain position of the SL-PRS resource; The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

36. A terminal, the terminal being a second terminal, characterized in that: include: Memory, transceiver, processor: Memory, used to store program instructions; A transceiver, used for transmitting and receiving data under the control of the processor, and performing the following operations: Receiving first control information sent by a first communication device; According to the first control information, receiving a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal; The first control information includes at least one of the following information: The first indication information is used to indicate the type of the second-level direct link control information SCI; The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH; The fourth indication information is used to indicate the time domain position of the SL-PRS resource; The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

37. The terminal according to claim 36, characterized in that The first indication information is a reserved field value of the first field in the first-level SCI; wherein the first field is used to indicate the format of the second-level SCI; or, The first indication information is a reserved bit in a first format, and the first format is an existing format of the second-level SCI.

38. The terminal according to claim 37, characterized in that In the case where the reserved bit in the first format is 0, the second-level SCI format 2-C is used to indicate inter-user coordination information; When the reserved bit in the first format is 1, the second-level SCI format 2-C is used to indicate the direct link positioning reference signal SL PRS resource information.

39. The terminal according to claim 36 or 37, characterized in that: The second-level SCI is used to indicate SL-PRS resource information.

40. The terminal according to any one of claims 36 to 38, characterized in that: The second indication information is used to indicate: The orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH in a time slot is located before the OFDM symbol occupied by the SL-PRS resource; or, In a time slot, the orthogonal frequency division multiplexing OFDM symbol occupied by the PSSCH is located after the OFDM symbol occupied by the SL-PRS resource.

41. An information transmission device, characterized in that: include: A first receiving unit, configured to receive first control information sent by a first communication device; A second receiving unit, configured to receive a direct link positioning reference signal SL-PRS and / or a physical direct link shared channel PSSCH sent by the first terminal according to the first control information; The first control information includes at least one of the following information: The first indication information is used to indicate the type of the second-level direct link control information SCI; The second indication information is used to indicate the relative relationship between the time domain position of the SL-PRS resource and the time domain position of the PSSCH; The third indication information is used to indicate that the second-level SCI includes the time domain position of the SL-PRS resource or the time domain position of the PSSCH; The fourth indication information is used to indicate the time domain position of the SL-PRS resource; The fifth indication information is used to indicate the time domain position of the PSSCH in the same time slot as the SL-PRS resource; The sixth indication information is used to indicate the index number of the SL-PRS resource, and the index number of the SL-PRS resource is used to indicate the time domain position of the SL-PRS resource.

42. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the steps of the information transmission method according to any one of claims 1 to 10, or to execute the steps of the information transmission method according to any one of claims 11 to 24.

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