Information transmission method and device, related equipment and storage medium

Abstract

The invention discloses an information transmission method and device, network equipment, a first terminal, a second terminal and a storage medium. The method comprises the following steps: network equipment sends first information to a first terminal, and the first information comprises configuration information related to small data transmission (SDT) carried out by the first terminal and the network equipment when the first terminal is in an inactive state; and / or, the network device sends second information to a second terminal, the second information including configuration information related to SDT with the network device when the second terminal is in an inactive state; wherein the first terminal can communicate with the network equipment through the second terminal.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and in particular, to an information transmission method, apparatus, related device, and storage medium. Background Art

[0002] The sidelink (SL) relay architecture supports a remote terminal to access the network through a relay terminal, and the remote terminal and the relay terminal have independent bearers; it can be understood that at this time, the remote terminal accesses the network through an indirect path, and this indirect path includes the SL between the remote terminal and the relay terminal (i.e., a wireless communication link established based on the PC5 interface) and the Uu link between the relay terminal and the network side (i.e., a wireless communication link established based on the Uu interface (which can also be called the Uu port, Uu air interface, etc.), and can also be called the Uu port link, Uu air interface link, etc.). A terminal supporting single connection can switch paths between a direct path (this direct path only includes the Uu link) and the above indirect path, while a terminal supporting multi-connection can have a direct path and an indirect path.

[0003] Small data transmission (SDT) is a data transmission technology introduced by related technologies to reduce the resource overhead of terminals. SDT is based on bearer configuration and can specifically include data bearers and signaling bearers. However, for how to implement SDT in the SL relay architecture, related technologies have not yet had an effective solution. Summary of the Invention

[0004] To solve the related technical problems, embodiments of this application provide an information transmission method, apparatus, related device, and storage medium.

[0005] The technical solution of the embodiments of this application is implemented as follows:

[0006] Embodiments of this application provide an information transmission method, which is applied to a network device and includes:

[0007] Sending first information to a first terminal, where the first information includes configuration information related to SDT between the first terminal and the network device when the first terminal is in an inactive state;

[0008] and / or

[0009] Sending second information to a second terminal, where the second information includes configuration information related to SDT between the second terminal and the network device when the second terminal is in an inactive state; where

[0010] The first terminal can communicate with the network device through the second terminal.

[0011] In the above solution, sending the first information to the first terminal includes:

[0012] Sending a first Radio Resource Control (RRC) release message to the first terminal, where the first RRC release message includes third information and the first information, and the third information is used to indicate that the first terminal switches from the connected state to the inactive state.

[0013] In the above solution, sending the second information to the second terminal includes:

[0014] Sending a second RRC release message to the second terminal, where the second RRC release message includes fourth information and the second information, and the fourth information is used to indicate that the second terminal switches from the connected state to the inactive state.

[0015] In the above solution, the second information includes one of the following:

[0016] Configuration information related to a first Data Radio Bearer (DRB), where the first DRB is associated with the Uu relay Radio Link Control (RLC) channel and the PC5 relay RLC channel;

[0017] Configuration information related to the Uu relay RLC channel and configuration information related to the PC5 relay RLC channel; where,

[0018] The Uu relay RLC channel is located between the network device and the second terminal, and the PC5 relay RLC channel is located between the second terminal and the first terminal.

[0019] In the above solution, the first information includes:

[0020] Configuration information related to a second DRB, where the second DRB supports SDT and the second DRB is associated with the PC5 interface;

[0021] Configuration information related to the Uu relay RLC channel and configuration information related to the PC5 relay RLC channel, where the Uu relay RLC channel is located between the network device and the second terminal, and the PC5 relay RLC channel is located between the second terminal and the first terminal.

[0022] In the above solution, the method further includes at least one of the following:

[0023] Performing SDT with the first terminal through a direct connection path based on the first information;

[0024] Based on the first information, perform SDT with the first terminal through a non-direct connection path;

[0025] Based on the second information, perform SDT with the second terminal.

[0026] In the above solution, when the first terminal can directly communicate with the network device and the network device sends the first information to the first terminal, the method further includes:

[0027] Send fifth information to the first terminal, where the fifth information is used to instruct the first terminal to perform SDT with the network device through a direct connection path or a non-direct connection path;

[0028] Based on the first information and the fifth information, perform SDT with the first terminal through a direct connection path or a non-direct connection path.

[0029] An embodiment of the present application further provides an information transmission method, which is applied to a first terminal and includes:

[0030] Receive first information sent by the network side, where the first information includes configuration information related to SDT between the first terminal and the network side when the first terminal is in an inactive state, and the first terminal can communicate with the network side through a second terminal.

[0031] In the above solution, the receiving the first information sent by the network side includes:

[0032] Receive a first RRC release message sent by the network side, where the first RRC release message includes third information and the first information, and the third information is used to instruct the first terminal to switch from a connected state to an inactive state.

[0033] In the above solution, the first information includes:

[0034] Configuration information related to a second DRB, where the second DRB supports SDT and the second DRB is associated with a PC5 interface;

[0035] Configuration information related to a Uu relay RLC channel and configuration information related to a PC5 relay RLC channel, where the Uu relay RLC channel is located between the network side and the second terminal, and the PC5 relay RLC channel is located between the second terminal and the first terminal.

[0036] In the above solution, the method further includes at least one of the following:

[0037] Based on the first information, perform SDT with the network side through a direct connection path;

[0038] Based on the first information, perform SDT with the network side through a non-direct connection path.

[0039] In the above solution, when the first terminal can directly communicate with the network side, the method further includes:

[0040] Receive the fifth information sent by the network side, where the fifth information is used to instruct the first terminal to perform SDT with the network side through a direct connection path or a non-direct connection path;

[0041] Based on the first information and the fifth information, perform SDT with the network side through a direct connection path or a non-direct connection path.

[0042] An embodiment of the present application further provides an information transmission method, which is applied to a second terminal and includes:

[0043] Receive the second information sent by the network side, where the second information includes configuration information related to SDT when the second terminal is in the inactive state, and the first terminal can communicate with the network side through the second terminal.

[0044] In the above solution, the receiving the second information sent by the network side includes:

[0045] Receive the second RRC release message sent by the network side, where the second RRC release message includes the fourth information and the second information, and the fourth information is used to instruct the second terminal to switch from the connected state to the inactive state.

[0046] In the above solution, the second information includes one of the following:

[0047] Configuration information related to the first DRB, where the first DRB is associated with the Uu relay RLC channel and the PC5 relay RLC channel;

[0048] Configuration information related to the Uu relay RLC channel and configuration information related to the PC5 relay RLC channel; where,

[0049] The Uu relay RLC channel is located between the network side and the second terminal, and the PC5 relay RLC channel is located between the second terminal and the first terminal.

[0050] In the above solution, the method further includes:

[0051] Based on the second information, perform SDT with the network side.

[0052] An embodiment of the present application further provides an information transmission device, including:

[0053] A sending unit, configured to send first information to a first terminal, where the first information includes configuration information related to small data transmission (SDT) between the first terminal and a network device when the first terminal is in an inactive state;

[0054] And / or,

[0055] Send second information to a second terminal, where the second information includes configuration information related to SDT between the second terminal and the network device when the second terminal is in an inactive state; where

[0056] The first terminal can communicate with the network device through the second terminal.

[0057] An embodiment of this application further provides an information transmission device, including:

[0058] A first receiving unit, configured to receive first information sent by a network side, where the first information includes configuration information related to SDT between a first terminal and the network side when the first terminal is in an inactive state, and the first terminal can communicate with the network side through a second terminal.

[0059] An embodiment of this application further provides an information transmission device, including:

[0060] A second receiving unit, configured to receive second information sent by the network side, where the second information includes configuration information related to SDT between a second terminal and the network side when the second terminal is in an inactive state, and a first terminal can communicate with the network side through the second terminal.

[0061] An embodiment of this application further provides a network device, including: a first communication interface and a first processor; where

[0062] The first communication interface is configured to send first information to a first terminal, where the first information includes configuration information related to small data transmission (SDT) between the first terminal and the network device when the first terminal is in an inactive state;

[0063] And / or,

[0064] Send second information to a second terminal, where the second information includes configuration information related to SDT between the second terminal and the network device when the second terminal is in an inactive state; where

[0065] The first terminal can communicate with the network device through the second terminal.

[0066] An embodiment of this application further provides a first terminal, including: a second communication interface and a second processor; where

[0067] The second communication interface is used to receive first information sent by the network side. The first information includes configuration information related to SDT between the network side and the first terminal when the first terminal is in the inactive state. The first terminal can communicate with the network side through the second terminal.

[0068] An embodiment of this application further provides a second terminal, including: a third communication interface and a third processor; wherein,

[0069] The third communication interface is used to receive second information sent by the network side. The second information includes configuration information related to SDT between the network side and the second terminal when the second terminal is in the inactive state. The first terminal can communicate with the network side through the second terminal.

[0070] An embodiment of this application further provides a network device, including: a first processor and a first memory for storing a computer program that can run on the processor,

[0071] Wherein, when the first processor is used to run the computer program, it executes the steps of any of the methods on the network device side described above.

[0072] An embodiment of this application further provides a first terminal, including: a second processor and a second memory for storing a computer program that can run on the processor,

[0073] Wherein, when the second processor is used to run the computer program, it executes the steps of any of the methods on the first terminal side described above.

[0074] An embodiment of this application further provides a second terminal, including: a third processor and a third memory for storing a computer program that can run on the processor,

[0075] Wherein, when the third processor is used to run the computer program, it executes the steps of any of the methods on the second terminal side described above.

[0076] An embodiment of this application further provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps of any of the methods on the network device side described above, or implements the steps of any of the methods on the first terminal side described above, or implements the steps of any of the methods on the second terminal side described above.

[0077] The information transmission method, device, related equipment and storage medium provided by the embodiments of this application. The network device sends first information to a first terminal, where the first information includes configuration information related to SDT between the network device and the first terminal when the first terminal is in an inactive state; and / or, sends second information to a second terminal, where the second information includes configuration information related to SDT between the network device and the second terminal when the second terminal is in an inactive state; wherein, the first terminal can communicate with the network device through the second terminal. In the solution provided by the embodiments of this application, when a remote terminal (i.e., the first terminal) can communicate with the network side through a relay terminal (i.e., the second terminal), that is, in the SL relay architecture, the network side sends configuration information related to SDT between the network side and the remote terminal when the remote terminal is in an inactive state (i.e., the first information), and / or, sends configuration information related to SDT between the network side and the relay terminal when the relay terminal is in an inactive state (i.e., the second information). In this way, the remote terminal and / or the relay terminal can perform SDT with the network side based on the configuration of the network side when in an inactive state in the future, so that SDT can be implemented in the SL relay architecture, that is, the capabilities of the remote terminal and / or the relay terminal that support SDT can be utilized to reduce the resource overhead of the remote terminal and / or the relay terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 It is a schematic flow chart of the information transmission method according to the embodiments of this application;

[0079] Figure 2 It is a schematic structural diagram of an information transmission device according to an embodiment of this application;

[0080] Figure 3 It is a schematic structural diagram of another information transmission device according to an embodiment of this application;

[0081] Figure 4 It is a schematic structural diagram of a third information transmission device according to an embodiment of this application;

[0082] Figure 5 It is a schematic structural diagram of a network device according to an embodiment of this application;

[0083] Figure 6 It is a schematic structural diagram of a first terminal according to an embodiment of this application;

[0084] Figure 7 It is a schematic structural diagram of a second terminal according to an embodiment of this application;

[0085] Figure 8 It is a schematic structural diagram of an information transmission system according to an embodiment of this application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0086] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0087] An embodiment of the present application provides an information transmission method, which is applied to a network device and includes:

[0088] Sending first information to a first terminal, where the first information includes configuration information related to SDT between the network device and the first terminal when the first terminal is in an inactive state;

[0089] And / or,

[0090] Sending second information to a second terminal, where the second information includes configuration information related to SDT between the network device and the second terminal when the second terminal is in an inactive state; where

[0091] The first terminal can communicate with the network device through the second terminal.

[0092] Wherein, in actual application, the first terminal can communicate with the network device through the second terminal, which means that the first terminal can perform relay communication with the network device through the second terminal, and the first terminal, the second terminal and the network device can form an SL relay architecture; in other words, the first terminal and the second terminal can communicate through SL, and the second terminal and the network device can communicate through the Uu link.

[0093] Here, it can be understood that when the first terminal communicates with the network device through the second terminal, the first terminal communicates with the network device through a non-direct path, and the non-direct path includes the SL between the first terminal and the second terminal and the Uu link between the second terminal and the network device. In addition, when the first terminal supports multi-connection or multi-link or multi-path transmission, when the first terminal communicates with the network device through the second terminal, the first terminal can also directly communicate with the network device, that is, communicate with the network device through a direct path, that is, directly communicate with the network device through the Uu link.

[0094] In actual application, the network device may specifically include a base station, etc. The embodiments of the present application do not limit the specific type of the network device, as long as its functions can be realized. In addition, the terminal (the first terminal, the second terminal) may also be referred to as a user equipment (UE, User Equipment), and may also be referred to as a user. Among them, the first terminal may also be referred to as a remote terminal, a far-end terminal, a far-end node, a far-end user, or a remote UE (which can be expressed in English as Remote UE), etc. The second terminal may also be referred to as a relay terminal, a relay node, a relay user, or a relay UE (which can be expressed in English as Relay UE), etc. The embodiments of the present application do not limit the specific names of the first terminal and the second terminal, as long as their functions can be realized.

[0095] In actual application, it can be understood that the first information is used to enable the first terminal to support SDT. When the network device sends the first information to the first terminal, the first terminal and / or the second terminal may be in the RRC connected state (which can be expressed in English as connected). In order to perform SDT, the first terminal needs to be in the inactive state. Therefore, the network device may send the first information to the first terminal through an RRC release (which can be expressed in English as RRCRelease) message.

[0096] Based on this, in one embodiment, the sending the first information to the first terminal may include:

[0097] Sending a first RRC release message to the first terminal, the first RRC release message includes third information and the first information, and the third information is used to indicate that the first terminal switches from the connected state to the inactive state.

[0098] Among them, in actual application, the network device may specifically send the first RRC release message to the first terminal through the direct connection path or the non-direct connection path.

[0099] In practical applications, the third information is used to indicate that the first terminal switches from the connected state to the inactive state, or it can be understood that the third information is used to indicate that the first terminal remains in the inactive state. Additionally, the third information can also be referred to as a disable / suspend / pause configuration (which can be expressed in English as "suspend configuration") or a disable / suspend / pause indication (suspend indication), etc. The first RRC release message can also be referred to as an RRC release message carrying / containing a suspend configuration (which can be expressed in English as "RRCRelease with suspend indication / configuration"), etc. The embodiments of the present application do not limit the specific names of the third information and the first RRC release message, as long as their functions are achieved.

[0100] In practical applications, it can be understood that the second information is used to enable the second terminal to support SDT. When the network device sends the second information to the second terminal, the second terminal and / or the first terminal can be in the RRC connected state. For SDT to be performed, the second terminal needs to be in the inactive state. Therefore, the network device can send the second information to the second terminal through an RRC release message.

[0101] Based on this, in one embodiment, the sending of the second information to the second terminal may include:

[0102] Sending a second RRC release message to the second terminal, where the second RRC release message contains a fourth information and the second information, and the fourth information is used to indicate that the second terminal switches from the connected state to the inactive state.

[0103] Among them, in practical applications, the fourth information is used to indicate that the second terminal switches from the connected state to the inactive state, or it can be understood that the fourth information is used to indicate that the first terminal remains in the inactive state. Additionally, the fourth information can also be referred to as a disable / suspend / pause configuration or a disable / suspend / pause indication, etc. The second RRC release message can also be referred to as an RRC release message carrying / containing a suspend configuration, etc. The embodiments of the present application do not limit the specific names of the fourth information and the second RRC release message, as long as their functions are achieved.

[0104] In actual application, to implement the SL relay architecture, the RRC state of the first terminal usually needs to be lower than or equal to that of the second terminal. For example, when the first terminal is in the RRC connected state, the second terminal can only be in the RRC connected state; for another example, when the first terminal is in the inactive state, the second terminal can be in the RRC connected state or the inactive state; for still another example, when the first terminal is in the idle state (which can be expressed as "idle" in English), the second terminal can be in the RRC connected state, the inactive state or the idle state. At this time, the network device enables the first terminal to support SDT through the first information, and / or enables the second terminal to support SDT through the second information, which can make the RRC state of the first terminal higher than that of the second terminal. For example, when both the first terminal and the second terminal are in the RRC connected state, the network device can send the second information and the fourth information to the second terminal only through the second RRC release message. The second terminal can switch from the connected state to the inactive state according to the fourth information, while the first terminal remains in the connected state at this time. Of course, when both the first terminal and the second terminal are in the RRC connected state, the network device can also send the first information and the third information to the first terminal only through the first RRC release message. The first terminal can switch from the connected state to the inactive state according to the third information, while the second terminal remains in the connected state at this time. In addition, it can be understood that when the network device needs to send the first RRC release message and the second RRC release message, and the network device needs to send the first RRC release message through a non-direct path, in order to ensure that the first terminal can obtain the first information, the network device needs to send the first RRC release message to the first terminal first, and then send the second RRC release message to the second terminal.

[0105] In actual application, the first information can also be referred to as SDT configuration information (which can be expressed as "sdt-config" in English), etc. The first information can at least be used to indicate and / or activate SDT resources.

[0106] Based on this, in one embodiment, the first information may include:

[0107] Configuration information related to the second DRB, the second DRB supports SDT, and the second DRB is associated with the PC5 interface;

[0108] Configuration information related to Uu relay RLC channels (which can be expressed in English as Uu Relay RLC channels) and configuration information related to PC5 relay RLC channels (which can be expressed in English as PC5 Relay RLC channels), where the Uu relay RLC channels are located between the network device and the second terminal, and the PC5 relay RLC channels are located between the second terminal and the first terminal.

[0109] Among them, in actual application, the configuration information related to the second DRB may include a DRB list (which can be expressed in English as DRBlist), and the DRB list may include at least one DRB identity (such as ID, etc.), and each DRB identity corresponds to a second DRB that supports SDT (that is, the first information may include at least one piece of configuration information related to the second DRB). The association between the second DRB and the PC5 interface means that the second DRB can correspond to configuration information related to PC5 interfaces such as the PC5 interface (PC5-RLC) of the RLC layer, the PC5 interface (PC5-MAC) of the Media Access Control (MAC) layer, and the PC5 interface (PC5-PHY) of the Physical (PHY) layer; after receiving the first RRC release message containing the first information and the third information, the first terminal can remain in the inactive state according to the third information and retain the configuration information related to the PC5-RLC, PC5-MAC, and PC5-PHY and other PC5 interfaces corresponding to the second DRB according to the first information.

[0110] In actual application, the second information may also be referred to as SDT configuration information (which can be expressed in English as sdt-config), etc., and the second information can at least be used to indicate and / or activate SDT resources. Specifically, the second information can indicate and / or activate SDT resources in the following two ways:

[0111] Method 1: Indicate and / or activate the first DRB, and map (i.e., associate) the Uu relay RLC channels (which can be expressed in English as Uu Relay RLC channels) and the PC5 relay RLC channels (which can be expressed in English as PC5 Relay RLC channels) through the first DRB;

[0112] Method 2: Directly indicate and / or activate the Uu relay RLC channels and the PC5 relay RLC channels.

[0113] Based on this, in one embodiment, for the above-mentioned method 1, the second information may include configuration information related to a first DRB, and the first DRB is associated (i.e., mapped) with the Uu relay RLC channel and the PC5 relay RLC channel.

[0114] In one embodiment, for the above-mentioned method 2, the second information may include configuration information related to the Uu relay RLC channel and configuration information related to the PC5 relay RLC channel.

[0115] Among them, the Uu relay RLC channel is located between the network device and the second terminal, and the PC5 relay RLC channel is located between the second terminal and the first terminal. It can be understood that the Uu relay RLC channel and the PC5 relay RLC channel are used for relaying data transmission. The first terminal includes a layer 2 (L2, Layer 2) terminal to network (U2N, UE to Network) remote terminal (which can be expressed in English as L2 U2N Remote UE), and the second terminal includes an L2 U2N relay terminal (which can be expressed in English as L2 U2N Relay UE); in other words, the Uu relay RLC channel may refer to the Uu Relay RLC channels between the network device (such as a base station, etc.) and the L2 U2N Relay UE, and the PC5 relay RLC channel may refer to the PC5 Relay RLC channels between the L2 U2N Relay UE and the L2 U2N Remote UE.

[0116] Specifically, in actual application, the configuration information related to the first DRB may include a DRB list (which can be expressed in English as DRB list), and the DRB list may include at least one DRB identity (which can be expressed in English as DRB identity) (such as ID, etc.). Each DRB identity corresponds to a first DRB that supports SDT (that is, the second information may include at least one piece of configuration information related to the first DRB). The association between the first DRB and the Uu relay RLC channel and the PC5 relay RLC channel means that the first DRB can correspond to (i.e., be mapped to) the configuration information related to the Uu relay RLC channel and the configuration information related to the PC5 relay RLC channel. Additionally, it can be understood that the first DRB is a virtual DRB, that is, the first DRB does not have a Packet Data Convergence Protocol (PDCP) entity and is only used to associate (i.e., map) the Uu relay RLC channel and the PC5 relay RLC channel; therefore, the first DRB can also be referred to as a Virtual DRB, etc. The embodiments of the present application do not limit the name of the first DRB, as long as its function can be achieved.

[0117] In actual application, the specific content of the configuration information related to the Uu relay RLC channel and the configuration information related to the PC5 relay RLC channel can be set according to requirements; exemplarily, the configuration information related to the Uu relay RLC channel may at least include the identification information of the Uu relay RLC channel, etc., and the configuration information related to the PC5 relay RLC channel may at least include the identification information of the PC5 relay RLC channel, etc.

[0118] In actual application, when there is data that needs to be subjected to SDT (the embodiments of the present application do not limit the specific conditions for SDT in the SL relay architecture, such as the threshold of the packet size, etc.), the network device may establish an uplink and / or downlink tunnel (which can be expressed in English as tunnel) for the first DRB, or establish an uplink and / or downlink tunnel for the Uu relay RLC channel and the PC5 relay RLC channel.

[0119] In actual application, after receiving the first information, the first terminal may perform SDT with the network device based on the first information. Among them, when the first terminal only supports single connection, the first terminal may perform SDT with the network device through a non-direct path (i.e., through the second terminal) based on the first information; for example, when there is uplink data to be sent by the first terminal that meets the SDT conditions (the embodiments of the present application do not limit the specific conditions for SDT in the SL relay architecture, such as the threshold of the packet size, etc.), the data can be sent to the network device through a non-direct path (i.e., through the second terminal), that is, the network device can receive the data through a non-direct path (i.e., through the second terminal), and the first terminal can be kept in the inactive state. When the first terminal supports multi-connection or multi-link or multi-path (which can be expressed in English as Multi path) transmission, the first terminal may perform SDT with the network device only through a non-direct path based on the first information, or perform SDT with the network device only through a direct path, or perform SDT with the network device through both a non-direct path and a direct path.

[0120] Based on this, in one embodiment, the method may further include at least one of the following:

[0121] Perform SDT with the first terminal through a direct path based on the first information;

[0122] Perform SDT with the first terminal through a non-direct path based on the first information.

[0123] In actual application, when the first terminal supports multi-connection or multi-link or multi-path (which can be expressed in English as Multi path) transmission, the network device may also indicate in the first RRC release message whether the first terminal performs SDT with the network device through a direct path or a non-direct path.

[0124] Based on this, in one embodiment, when the first terminal can directly communicate with the network device and the network device sends the first information to the first terminal, the method may further include:

[0125] Send the fifth information to the first terminal, where the fifth information is used to indicate whether the first terminal performs SDT with the network device through a direct path or a non-direct path;

[0126] Perform SDT with the first terminal through a direct path or a non-direct path based on the first information and the fifth information.

[0127] Here, the fact that the first terminal can directly communicate with the network device means that the first terminal can communicate with the network device both through the second terminal and directly with the network device; in other words, the first terminal supports multi - connection or multi - link or multi - path (which can be expressed in English as "Multi path") transmission. Additionally, in addition to the first information and the third information, the first RRC release message may further include the fifth information.

[0128] In practical applications, when the first information includes configuration information related to at least one second DRB, each second DRB may be associated with the same or different fifth information, and the fifth information may be used to indicate that the first terminal performs SDT of the corresponding second DRB with the network device through a direct connection path or a non - direct connection path.

[0129] In practical applications, after receiving the second information, the second terminal may perform SDT with the network device based on the second information, that is, perform SDT of the relay data of the first terminal.

[0130] Based on this, in one embodiment, the method may further include:

[0131] Perform SDT with the second terminal based on the second information.

[0132] Correspondingly, an embodiment of the present application further provides an information transmission method, applied to a first terminal, including:

[0133] Receive first information sent by the network side, where the first information includes configuration information related to performing SDT between the first terminal and the network side when the first terminal is in an inactive state, and the first terminal can communicate with the network side through a second terminal.

[0134] Wherein, the network side may specifically include a network device, such as a base station, etc.

[0135] In one embodiment, the receiving the first information sent by the network side may include:

[0136] Receive a first RRC release message sent by the network side, where the first RRC release message includes third information and the first information, and the third information is used to indicate that the first terminal switches from a connected state to an inactive state.

[0137] In one embodiment, the method may further include at least one of the following:

[0138] Perform SDT with the network side through a direct connection path based on the first information;

[0139] Perform SDT with the network side through a non - direct connection path based on the first information.

[0140] In one embodiment, when the first terminal can directly communicate with the network side, the method may further include:

[0141] Receiving fifth information sent by the network side, where the fifth information is used to indicate that the first terminal performs SDT with the network side through a direct connection path or a non-direct connection path;

[0142] Based on the first information and the fifth information, perform SDT with the network side through a direct connection path or a non-direct connection path.

[0143] Correspondingly, an embodiment of the present application further provides an information transmission method, which is applied to a second terminal and includes:

[0144] Receiving second information sent by the network side, where the second information includes configuration information related to SDT between the second terminal and the network side when the second terminal is in an inactive state, and the first terminal can communicate with the network side through the second terminal.

[0145] Wherein, in one embodiment, the receiving the second information sent by the network side may include:

[0146] Receiving a second RRC release message sent by the network side, where the second RRC release message includes fourth information and the second information, and the fourth information is used to indicate that the second terminal switches from a connected state to an inactive state.

[0147] In one embodiment, the method may further include:

[0148] Based on the second information, perform SDT with the network side.

[0149] Correspondingly, an embodiment of the present application further provides an information transmission method, as Figure 1 shown, the method includes:

[0150] Step 101: A network device sends first information to a first terminal and / or sends second information to a second terminal, where the first information includes configuration information related to SDT between the first terminal and the network device when the first terminal is in an inactive state, and the second information includes configuration information related to SDT between the second terminal and the network device when the second terminal is in an inactive state;

[0151] Step 102: The first terminal receives the first information sent by the network device and / or the second terminal receives the second information sent by the network device.

[0152] The information transmission method provided by the embodiments of the present application is such that a network device sends first information to a first terminal, where the first information includes configuration information related to SDT between the network device and the first terminal when the first terminal is in an inactive state; and / or sends second information to a second terminal, where the second information includes configuration information related to SDT between the network device and the second terminal when the second terminal is in an inactive state; wherein the first terminal can communicate with the network device through the second terminal. The solution provided by the embodiments of the present application, in the case where a remote terminal (i.e., the first terminal) can communicate with the network side through a relay terminal (i.e., the second terminal), that is, in an SL relay architecture, the network side sends configuration information related to SDT between the network side and the remote terminal when the remote terminal is in an inactive state (i.e., the first information), and / or sends configuration information related to SDT between the network side and the relay terminal when the relay terminal is in an inactive state (i.e., the second information). In this way, the remote terminal and / or the relay terminal can subsequently perform SDT with the network side based on the configuration of the network side when in an inactive state, so as to be able to implement SDT in the SL relay architecture, that is, to utilize the capabilities of the remote terminal and / or the relay terminal that can support SDT, and reduce the resource overhead of the remote terminal and / or the relay terminal.

[0153] To implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide an information transmission device, which is set on the network device, as Figure 2 shown. The device includes:

[0154] A sending unit 201, configured to send first information to a first terminal, where the first information includes configuration information related to SDT between the network device and the first terminal when the first terminal is in an inactive state;

[0155] and / or,

[0156] send second information to a second terminal, where the second information includes configuration information related to SDT between the network device and the second terminal when the second terminal is in an inactive state; wherein,

[0157] the first terminal can communicate with the network device through the second terminal.

[0158] In one embodiment, the sending unit 201 is specifically configured to send a first RRC release message to the first terminal, where the first RRC release message includes third information and the first information, and the third information is used to indicate that the first terminal switches from a connected state to an inactive state.

[0159] In one embodiment, the sending unit 201 is specifically configured to send a second RRC release message to the second terminal, where the second RRC release message includes fourth information and the second information, and the fourth information is used to indicate that the second terminal switches from a connected state to an inactive state.

[0160] In one embodiment, as Figure 2 shown, the apparatus may further include a first transmission unit 202, configured to perform at least one of the following:

[0161] Perform SDT with the first terminal through a direct connection path based on the first information;

[0162] Perform SDT with the first terminal through a non-direct connection path based on the first information;

[0163] Perform SDT with the second terminal based on the second information.

[0164] In one embodiment, when the first terminal can directly communicate with the network device and the network device sends the first information to the first terminal, the sending unit 201 is further configured to send fifth information to the first terminal, where the fifth information is used to indicate that the first terminal performs SDT with the network device through a direct connection path or a non-direct connection path;

[0165] Correspondingly, the first transmission unit 202 is further configured to perform SDT with the first terminal through a direct connection path or a non-direct connection path based on the first information and the fifth information.

[0166] In practical applications, the sending unit 201 may be implemented by a communication interface in the information transmission device; the first transmission unit 202 may be implemented by a processor in the information transmission device in combination with the communication interface.

[0167] To implement the method on the first terminal side in the embodiments of the present application, the embodiments of the present application further provide an information transmission device, which is disposed on the first terminal, as Figure 3 shown, the device includes:

[0168] A first receiving unit 301, configured to receive first information sent by the network side, where the first information includes configuration information related to SDT when the first terminal is in an inactive state and the first terminal can communicate with the network side through a second terminal.

[0169] Wherein, in one embodiment, the first receiving unit 301 is specifically configured to receive a first RRC release message sent by the network side, where the first RRC release message includes third information and the first information, and the third information is used to indicate that the first terminal switches from a connected state to an inactive state.

[0170] In one embodiment, as Figure 3 shown, the apparatus may further include a second transmission unit 302, configured to perform at least one of the following:

[0171] Perform SDT with the network side through a direct connection path based on the first information;

[0172] Perform SDT with the network side through a non-direct connection path based on the first information.

[0173] In one embodiment, when the first terminal can directly communicate with the network side, the first receiving unit 301 is further configured to receive fifth information sent by the network side, where the fifth information is used to indicate that the first terminal performs SDT with the network side through a direct connection path or a non-direct connection path;

[0174] Correspondingly, the second transmission unit 302 is further configured to perform SDT with the network side through a direct connection path or a non-direct connection path based on the first information and the fifth information.

[0175] In practical applications, the first receiving unit 301 may be implemented by a communication interface in the information transmission device; the second transmission unit 302 may be implemented by a processor in the information transmission device in combination with the communication interface.

[0176] To implement the method on the second terminal side in the embodiments of the present application, the embodiments of the present application further provide an information transmission device, which is disposed on the second terminal, as Figure 4 shown, the device includes:

[0177] A second receiving unit 401, configured to receive second information sent by the network side, where the second information includes configuration information related to SDT when the second terminal is in an inactive state, and the first terminal can communicate with the network side through the second terminal.

[0178] Wherein, in one embodiment, the second receiving unit 401 is specifically configured to receive a second RRC release message sent by the network side, where the second RRC release message includes fourth information and the second information, and the fourth information is used to indicate that the second terminal switches from a connected state to an inactive state.

[0179] In one embodiment, as Figure 4 shown, the device may further include a third transmission unit 402, configured to perform SDT with the network side based on the second information.

[0180] In practical applications, the second receiving unit 401 may be implemented by a communication interface in the information transmission device; the third transmission unit 402 may be implemented by a processor in the information transmission device in combination with the communication interface.

[0181] It should be noted that: when the information transmission device provided in the above embodiment performs information transmission, only the division of the above program modules is used for illustration. In actual applications, the above processing can be allocated to different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the information transmission device provided in the above embodiment and the embodiment of the information transmission method belong to the same concept. For the specific implementation process, please refer to the method embodiment, which will not be elaborated here.

[0182] Based on the hardware implementation of the above program modules, and in order to implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide a network device, as Figure 5 shown. The network device 500 includes:

[0183] A first communication interface 501, capable of performing information interaction with a terminal (such as a first terminal and / or a second terminal, etc.) and / or other network devices;

[0184] A first processor 502, connected to the first communication interface 501 to implement information interaction with a terminal and / or other network devices, and used to execute the method provided by one or more technical solutions on the network device side when running a computer program;

[0185] A first memory 503, where the computer program is stored on the first memory 503.

[0186] Specifically, the first communication interface 501 is used to send first information to the first terminal, and the first information includes configuration information related to SDT between the first terminal and the network device 500 when the first terminal is in an inactive state;

[0187] and / or,

[0188] send second information to the second terminal, and the second information includes configuration information related to SDT between the second terminal and the network device 500 when the second terminal is in an inactive state; where

[0189] the first terminal can communicate with the network device 500 through the second terminal.

[0190] In one embodiment, the first communication interface 501 is further used to send a first RRC release message to the first terminal, and the first RRC release message includes third information and the first information, and the third information is used to indicate that the first terminal switches from a connected state to an inactive state.

[0191] In one embodiment, the first communication interface 501 is further configured to send a second RRC release message to the second terminal, where the second RRC release message includes fourth information and the second information, and the fourth information is used to indicate that the second terminal switches from a connected state to an inactive state.

[0192] In one embodiment, the first processor 502 is configured to perform at least one of the following:

[0193] Perform SDT with the first terminal through a direct connection path based on the first information, where the direct connection path is implemented through the first communication interface 501;

[0194] Perform SDT with the first terminal through a non-direct connection path based on the first information, where the non-direct connection path is implemented through the first communication interface 501;

[0195] Perform SDT with the second terminal through the first communication interface 501 based on the second information.

[0196] In one embodiment, when the first terminal can directly communicate with the network device 500 and the network device 500 sends the first information to the first terminal, the first communication interface 501 is further configured to send fifth information to the first terminal, where the fifth information is used to indicate that the first terminal performs SDT with the network device 500 through a direct connection path or a non-direct connection path;

[0197] Correspondingly, the first processor 502 is further configured to perform SDT with the first terminal through a direct connection path or a non-direct connection path based on the first information and the fifth information.

[0198] It should be noted that the specific processing procedures of the first communication interface 501 and the first processor 502 can be understood with reference to the above method, and will not be elaborated here.

[0199] Of course, in practical applications, each component in the network device 500 is coupled together through a bus system 504. It can be understood that the bus system 504 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 504 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear description, in Figure 5 all kinds of buses are labeled as the bus system 504.

[0200] The first memory 503 in the embodiments of the present application is used to store various types of data to support the operation of the network device 500. Examples of these data include: any computer program for operating on the network device 500.

[0201] The method disclosed in the embodiments of the present application can be applied to or implemented by the first processor 502. The first processor 502 may be an integrated circuit chip with signal processing capabilities. During implementation, the steps of the above method can be completed by the integrated logic circuit of the hardware in the first processor 502 or instructions in software form. The above first processor 502 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 502 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application, it can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the first memory 503. The first processor 502 reads the information in the first memory 503 and combines its hardware to complete the steps of the foregoing method.

[0202] In an exemplary embodiment, the network device 500 can be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontroller units (MCUs), microprocessors, or other electronic components, and is used to execute the foregoing method.

[0203] Based on the hardware implementation of the above program module, and in order to implement the method on the first terminal side in the embodiments of the present application, the embodiments of the present application also provide a first terminal, as Figure 6 shown. The first terminal 600 includes:

[0204] A second communication interface 601, capable of interacting with the network side and / or other terminals (such as the second terminal, etc.) for information.

[0205] A second processor 602, connected to the second communication interface 601 to enable information interaction with the network side and / or other terminals, and when running a computer program, executes the method provided by one or more of the above-mentioned first terminal-side technical solutions;

[0206] A second memory 603, where the computer program is stored on the second memory 603.

[0207] Specifically, the second communication interface 601 is used to receive first information sent by the network side, where the first information includes configuration information related to SDT between the first terminal 600 and the network side when the first terminal 600 is in an inactive state, and the first terminal 600 can communicate with the network side through a second terminal.

[0208] Wherein, in one embodiment, the second communication interface 601 is further used to receive a first RRC release message sent by the network side, where the first RRC release message includes third information and the first information, and the third information is used to indicate that the first terminal 600 switches from a connected state to an inactive state.

[0209] In one embodiment, the second processor 602 is used to perform at least one of the following:

[0210] Based on the first information, perform SDT with the network side through a direct connection path, and the direct connection path is implemented through the second communication interface 601;

[0211] Based on the first information, perform SDT with the network side through a non-direct connection path, and the non-direct connection path is implemented through the second communication interface 601.

[0212] In one embodiment, when the first terminal 600 can directly communicate with the network side, the second communication interface 601 is further used to receive fifth information sent by the network side, where the fifth information is used to indicate that the first terminal 600 performs SDT with the network side through a direct connection path or a non-direct connection path;

[0213] Correspondingly, the second processor 602 is further used to perform SDT with the network side through a direct connection path or a non-direct connection path based on the first information and the fifth information.

[0214] It should be noted that: The specific processing procedures of the second communication interface 601 and the second processor 602 can be understood with reference to the above method, and will not be elaborated here.

[0215] Of course, in practical applications, the various components in the first terminal 600 are coupled together through a bus system 604. It can be understood that the bus system 604 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 604 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 6 the various buses are all labeled as the bus system 604.

[0216] The second memory 603 in the embodiments of the present application is used to store various types of data to support the operation of the first terminal 600. Examples of these data include: any computer program for operating on the first terminal 600.

[0217] The method disclosed in the embodiments of the present application above can be applied to the second processor 602 or implemented by the second processor 602. The second processor 602 may be an integrated circuit chip with signal processing capabilities. During the implementation process, the steps of the above method can be completed by the integrated logic circuit in the hardware of the second processor 602 or instructions in the form of software. The above second processor 602 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 602 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application, it can be directly embodied as being executed and completed by a hardware decoding processor, or by a combination of the hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the second memory 603. The second processor 602 reads the information in the second memory 603 and combines its hardware to complete the steps of the foregoing method.

[0218] In an exemplary embodiment, the first terminal 600 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for executing the foregoing method.

[0219] Based on the above hardware implementation of the program module, and in order to implement the method on the second terminal side in the embodiments of the present application, the embodiments of the present application also provide a second terminal, as Figure 7 shown. This second terminal 700 includes:

[0220] A third communication interface 701 capable of interacting with the network side and / or other terminals (such as the first terminal, etc.) for information.

[0221] A third processor 702, connected to the third communication interface 701, is configured to implement information interaction with the network side and / or other terminals. When running a computer program, it executes the method provided by one or more of the above-mentioned second terminal-side technical solutions;

[0222] A third memory 703, on which the computer program is stored.

[0223] Specifically, the third communication interface 701 is configured to receive second information sent by the network side. The second information includes configuration information related to SDT with the network side when the second terminal 700 is in an inactive state. The first terminal can communicate with the network side through the second terminal 700.

[0224] Wherein, in one embodiment, the third communication interface 701 is further configured to receive a second RRC release message sent by the network side. The second RRC release message includes fourth information and the second information. The fourth information is used to indicate that the second terminal 700 switches from a connected state to an inactive state.

[0225] In one embodiment, the third processor 702 is configured to perform SDT with the network side through the third communication interface 701 based on the second information.

[0226] It should be noted that the specific processing procedures of the third communication interface 701 and the third processor 702 can be understood with reference to the above method and will not be elaborated here.

[0227] Of course, in practical applications, each component in the second terminal 700 is coupled together through a bus system 704. It can be understood that the bus system 704 is used to realize the connection and communication between these components. The bus system 704 includes, in addition to a data bus, a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 7 all kinds of buses are labeled as the bus system 704.

[0228] The third memory 703 in the embodiment of the present application is used to store various types of data to support the operation of the second terminal 700. Examples of these data include: any computer program for operating on the second terminal 700.

[0229] The method disclosed in the embodiments of the present application can be applied to or implemented by the third processor 702. The third processor 702 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method can be completed by the integrated logic circuit of the hardware in the third processor 702 or instructions in the form of software. The above-mentioned third processor 702 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The third processor 702 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by the hardware decoding processor, or by a combination of the hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the third memory 703. The third processor 702 reads the information in the third memory 703 and combines its hardware to complete the steps of the foregoing method.

[0230] In an exemplary embodiment, the second terminal 700 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for executing the foregoing method.

[0231] It can be understood that the memories (the first memory 503, the second memory 603, and the third memory 703) in the embodiments of the present application can be volatile memories or non-volatile memories, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory), an electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), a ferromagnetic random access memory (FRAM, ferromagnetic random access memory), a flash memory (Flash Memory), a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM, Compact Disc Read-Only Memory); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM, Random Access Memory), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as a static random access memory (SRAM, Static Random Access Memory), a synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), a dynamic random access memory (DRAM, Dynamic Random Access Memory), a synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), a double data rate synchronous dynamic random access memory (DDR SDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), an enhanced synchronous dynamic random access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), a synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and a direct rambus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0232] To implement the method provided in the embodiments of this application, the embodiments of this application also provide an information transmission system, as Figure 8 shown, the system includes: a first terminal 801, a second terminal 802, and a network device 803.

[0233] Here, it should be noted that: the specific processing procedures of the first terminal 801, the second terminal 802, and the network device 803 have been described in detail above and will not be elaborated here.

[0234] In an exemplary embodiment, the embodiments of this application also provide a storage medium, namely a computer storage medium, specifically a computer-readable storage medium. For example, it includes a first memory 503 that stores a computer program, and the above computer program can be executed by a first processor 502 of the network device 500 to complete the steps of the method on the network device side described above. Another example is a second memory 603 that stores a computer program, and the above computer program can be executed by a second processor 602 of the first terminal 600 to complete the steps of the method on the first terminal side described above. Another example is a third memory 703 that stores a computer program, and the above computer program can be executed by a third processor 702 of the second terminal 700 to complete the steps of the method on the second terminal side described above. The computer-readable storage medium can be a FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0235] It should be noted that: "first", "second", etc. are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence.

[0236] In addition, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0237] The above is only a preferred embodiment of this application and is not used to limit the protection scope of this application.

Claims

1. An information transmission method, characterized in that, Applied to a network device, including: Sending first information to a first terminal, where the first information includes configuration information related to small data transmission (SDT) between the network device and the first terminal when the first terminal is in an inactive state; And / or, Sending second information to a second terminal, where the second information includes configuration information related to SDT between the network device and the second terminal when the second terminal is in an inactive state; wherein, The first terminal can communicate with the network device through the second terminal.

2. The method according to claim 1, characterized in that, The sending the first information to the first terminal includes: Sending a first radio resource control (RRC) release message to the first terminal, where the first RRC release message includes third information and the first information, and the third information is used to indicate that the first terminal switches from a connected state to an inactive state.

3. The method according to claim 1, wherein The sending the second information to the second terminal includes: Sending a second RRC release message to the second terminal, where the second RRC release message includes fourth information and the second information, and the fourth information is used to indicate that the second terminal switches from a connected state to an inactive state.

4. The method according to claim 1, wherein The second information includes one of the following: Configuration information related to a first data radio bearer (DRB), where the first DRB is associated with a Uu relay radio link control (RLC) channel and a PC5 relay RLC channel; Configuration information related to the Uu relay RLC channel and configuration information related to the PC5 relay RLC channel; wherein, The Uu relay RLC channel is located between the network device and the second terminal, and the PC5 relay RLC channel is located between the second terminal and the first terminal.

5. The method according to claim 1, characterized in that, The first information includes: Configuration information related to a second DRB, where the second DRB supports SDT and is associated with a PC5 interface; Configuration information related to the Uu relay RLC channel and configuration information related to the PC5 relay RLC channel, where the Uu relay RLC channel is located between the network device and the second terminal, and the PC5 relay RLC channel is located between the second terminal and the first terminal.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes at least one of the following: Performing SDT with the first terminal through a direct connection path based on the first information; Performing SDT with the first terminal through a non-direct connection path based on the first information; Performing SDT with the second terminal based on the second information.

7. The method according to any one of claims 1 to 5, characterized in that When the first terminal can directly communicate with the network device and the network device sends the first information to the first terminal, the method further includes: Sending fifth information to the first terminal, where the fifth information is used to indicate that the first terminal performs SDT with the network device through a direct connection path or a non-direct connection path; Performing SDT with the first terminal through a direct connection path or a non-direct connection path based on the first information and the fifth information.

8. An information transmission method, characterized in that, Applied to a first terminal, including: Receiving first information sent by the network side, where the first information includes configuration information related to SDT between the first terminal and the network side when the first terminal is in an inactive state, and the first terminal can communicate with the network side through a second terminal.

9. The method according to claim 8, characterized in that The receiving the first information sent by the network side includes: Receive a first RRC release message sent by the network side, where the first RRC release message includes third information and the first information, and the third information is used to indicate that the first terminal switches from the connected state to the inactive state.

10. The method according to claim 8, wherein The first information includes: Configuration information related to a second DRB, where the second DRB supports SDT and is associated with the PC5 interface; Configuration information related to the Uu relay RLC channel and configuration information related to the PC5 relay RLC channel, where the Uu relay RLC channel is between the network side and the second terminal, and the PC5 relay RLC channel is between the second terminal and the first terminal.

11. The method according to any one of claims 8 to 10, characterized in that, The method further includes at least one of the following: Based on the first information, perform SDT with the network side through a direct path; Based on the first information, perform SDT with the network side through a non-direct path.

12. The method according to any one of claims 8 to 10, characterized in that, When the first terminal can directly communicate with the network side, the method further includes: Receive fifth information sent by the network side, where the fifth information is used to indicate that the first terminal performs SDT with the network side through a direct path or a non-direct path; Based on the first information and the fifth information, perform SDT with the network side through a direct path or a non-direct path.

13. An information transmission method, characterized in that, Applied to a second terminal, it includes: Receive second information sent by the network side, where the second information includes configuration information related to performing SDT with the network side when the second terminal is in the inactive state, and the first terminal can communicate with the network side through the second terminal.

14. The method according to claim 13, characterized in that, The receiving the second information sent by the network side includes: Receive a second RRC release message sent by the network side, where the second RRC release message includes fourth information and the second information, and the fourth information is used to indicate that the second terminal switches from the connected state to the inactive state.

15. The method according to claim 13, wherein The second information includes one of the following: Configuration information related to a first DRB, where the first DRB is associated with the Uu relay RLC channel and the PC5 relay RLC channel; Configuration information related to the Uu relay RLC channel and configuration information related to the PC5 relay RLC channel; where The Uu relay RLC channel is between the network side and the second terminal, and the PC5 relay RLC channel is between the second terminal and the first terminal.

16. The method according to any one of claims 13 to 15, characterized in that, The method further includes: Based on the second information, perform SDT with the network side.

17. An information transmission device, characterized in that, It includes: A sending unit, configured to send first information to a first terminal, where the first information includes configuration information related to performing SDT with a network device when the first terminal is in the inactive state; And / or, Send second information to a second terminal, where the second information includes configuration information related to performing SDT with a network device when the second terminal is in the inactive state; where The first terminal can communicate with the network device through the second terminal.

18. An information transmission device, characterized in that, It includes: A first receiving unit, configured to receive first information sent by a network side, where the first information includes configuration information related to SDT between the network side and a first terminal when the first terminal is in an inactive state, and the first terminal can communicate with the network side through a second terminal.

19. An information transmission device, characterized in that, Comprising: A second receiving unit, configured to receive second information sent by a network side, where the second information includes configuration information related to SDT between the network side and a second terminal when the second terminal is in an inactive state, and the first terminal can communicate with the network side through the second terminal.

20. A network device, characterized in that, Comprising: A first communication interface and a first processor; wherein, The first communication interface is configured to send first information to a first terminal, where the first information includes configuration information related to small data transmission (SDT) between the first terminal and the network device when the first terminal is in an inactive state; And / or, Send second information to a second terminal, where the second information includes configuration information related to SDT between the second terminal and the network device when the second terminal is in an inactive state; wherein, The first terminal can communicate with the network device through the second terminal.

21. A first terminal, characterized in that, Comprising: A second communication interface and a second processor; wherein, The second communication interface is configured to receive first information sent by a network side, where the first information includes configuration information related to SDT between the first terminal and the network side when the first terminal is in an inactive state, and the first terminal can communicate with the network side through a second terminal.

22. A second terminal, characterized in that, Comprising: A third communication interface and a third processor; wherein, The third communication interface is configured to receive second information sent by a network side, where the second information includes configuration information related to SDT between the second terminal and the network side when the second terminal is in an inactive state, and the first terminal can communicate with the network side through the second terminal.

23. A network device, characterized in that, Comprising: A first processor and a first memory for storing a computer program that can run on the processor, wherein, when the first processor is used to run the computer program, it executes the steps of the method according to any one of claims 1 to 7.

24. A first terminal, characterized in that, Comprising: A second processor and a second memory for storing a computer program that can run on the processor, wherein, when the second processor is used to run the computer program, it executes the steps of the method according to any one of claims 8 to 12.

25. A second terminal, characterized in that, Comprising: A third processor and a third memory for storing a computer program that can run on the processor, wherein, when the third processor is used to run the computer program, it executes the steps of the method according to any one of claims 13 to 16.

26. A storage medium, on which a computer program is stored, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7, or implements the steps of the method according to any one of claims 8 to 12, or implements the steps of the method according to any one of claims 13 to 16.

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