A method and device for requesting system information

Abstract

The disclosed embodiment discloses a method and apparatus for requesting system information, which can be applied to the field of communication technology, wherein the method executed by a remote terminal device includes: in response to the remote terminal device not storing valid system information, sending a system information request message, wherein the request message carries a requested system information identifier. When the remote terminal device determines that no valid system information is stored, the remote terminal device can send a system information request message containing the required system information identifier to obtain valid system information, and then communicate based on the obtained valid system information, thereby improving the reliability of communication of the remote terminal device.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method and device for requesting system information. Background Art

[0002] In a communication system, when a terminal device in a connected state does not store valid system information and the terminal device is in a bandwidth part (BWP) of a common search space that is not configured for searching other system information, the terminal device can send a system information request radio resource control (RRC) message to a network device. Alternatively, when a terminal device in a connected state is in a BWP configured with a common search space for searching other system information, but the network device does not broadcast the system information required by the terminal device, the terminal can also send a system information request RRC message to the network device.

[0003] For a remote terminal device in a connected state, since it is not located on the BWP of the public search space, how the terminal device performs a system information request is a problem that needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present disclosure provide a method and apparatus for requesting system information. When a remote terminal device determines that no valid system information is stored, the remote terminal device can send a system information request message containing a required system information identifier to obtain valid system information, and then communicate based on the obtained valid system information to improve the reliability of communication of the remote terminal device.

[0005] In a first aspect, an embodiment of the present disclosure provides a method for requesting system information, the method being executed by a remote terminal device, the method comprising:

[0006] In response to the remote terminal device not storing valid system information, a system information request message is sent, wherein the request message carries a requested system information identifier.

[0007] In the present disclosure, when the remote terminal device determines that no valid system information is stored, it can send a system information request message containing the required system information identifier to obtain valid system information, and then communicate based on the obtained valid system information, thereby improving the reliability of communication of the remote terminal device.

[0008] In a second aspect, an embodiment of the present disclosure provides another method for requesting system information, the method being executed by a relay terminal device, and the method comprising:

[0009] A system information request message sent by a remote terminal device is received, wherein the request message carries a requested system information identifier.

[0010] In the present disclosure, the relay terminal device can receive the system information request message sent by the remote terminal device, thereby providing the required system information to the remote terminal device, so that the remote terminal device can communicate based on the acquired valid system information, thereby improving the reliability of the communication of the remote terminal device.

[0011] In a third aspect, an embodiment of the present disclosure provides another method for requesting system information, the method being executed by a network device, and the method comprising:

[0012] A system information request message sent by a remote terminal device is received, wherein the request message carries a requested system information identifier.

[0013] In the present disclosure, the network device can receive a system information request message sent by a remote terminal device, thereby providing the remote terminal device with the required system information, so that the remote terminal device can communicate based on the acquired valid system information, thereby improving the reliability of communication of the remote terminal device.

[0014] In a fourth aspect, an embodiment of the present disclosure provides a communication device, on a remote terminal device side, including:

[0015] The transceiver module is used to send a system information request message, wherein the request message carries a system information identifier requested by the terminal device, and no valid system information is stored in the terminal device.

[0016] In a fifth aspect, an embodiment of the present disclosure provides a communication device, on a relay terminal device side, including:

[0017] The transceiver module is used to receive a system information request message sent by a remote terminal device, wherein the request message carries a requested system information identifier.

[0018] In a sixth aspect, an embodiment of the present disclosure provides a communication device, on a network device side, including:

[0019] The transceiver module is used to receive a system information request message sent by a remote terminal device, wherein the request message carries a requested system information identifier.

[0020] In a seventh aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the first aspect is executed.

[0021] In an eighth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the second aspect is executed.

[0022] In a ninth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the third aspect is executed.

[0023] In the tenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the first aspect above.

[0024] In the eleventh aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the second aspect above.

[0025] In the twelfth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the third aspect above.

[0026] In a thirteenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the first aspect above.

[0027] In a fourteenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the second aspect above.

[0028] In a fifteenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the third aspect above.

[0029] In the sixteenth aspect, an embodiment of the present disclosure provides a system for requesting system information, the system including the communication device described in aspects four to six, or the system including the communication device described in aspects seven to nine, or the system including the communication device described in aspects ten to twelfth, or the system including the communication device described in aspects thirteen to fifteen.

[0030] In the seventeenth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing instructions for the above-mentioned terminal device, and when the instructions are executed, the terminal device executes the method described in the first aspect.

[0031] In an eighteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions used by the above-mentioned network device. When the instructions are executed, the network device executes the method described in the above-mentioned second aspect.

[0032] In the nineteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions used by the above-mentioned network device. When the instructions are executed, the network device executes the method described in the third aspect.

[0033] In a twentieth aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

[0034] In a twenty-first aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the second aspect above.

[0035] In the twenty-second aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the third aspect above.

[0036] In a twenty-third aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, for supporting a terminal device to implement the functions involved in the first aspect, for example, determining or processing at least one of the data and information involved in the above method. In a possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the terminal device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0037] In a twenty-third aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, for supporting a network device to implement the functions involved in the second aspect, for example, determining or processing at least one of the data and information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the network device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0038] In the twenty-fourth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, for supporting a network device to implement the functions involved in the third aspect, for example, determining or processing at least one of the data and information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the network device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0039] In a twenty-fifth aspect, the present disclosure provides a computer program which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

[0040] In a twenty-sixth aspect, the present disclosure provides a computer program which, when executed on a computer, enables the computer to execute the method described in the second aspect.

[0041] In a twenty-seventh aspect, the present disclosure provides a computer program which, when executed on a computer, enables the computer to execute the method described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

[0043] Figure 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0044] Figure 2 is a flowchart of a method for requesting system information provided by an embodiment of the present disclosure;

[0045] Figure 3 is a flowchart of another method for requesting system information provided by an embodiment of the present disclosure;

[0046] Figure 4 is a flowchart of another method for requesting system information provided by an embodiment of the present disclosure;

[0047] Figure 5 is a flowchart of another method for requesting system information provided by an embodiment of the present disclosure;

[0048] Figure 6 is a flowchart of another method for requesting system information provided by an embodiment of the present disclosure;

[0049] Figure 7 is a structural diagram of a communication device provided by an embodiment of the present disclosure;

[0050] Figure 8is a schematic diagram of the structure of another communication device provided by an embodiment of the present disclosure;

[0051] Fig. 9 It is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0052] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0053] For ease of understanding, the terms involved in the present disclosure are first introduced.

[0054] 1. Remote terminal equipment

[0055] A remote terminal device refers to a terminal device that is not directly connected to a network device, but is connected to the network device through another terminal device or other relay terminal device.

[0056] 2. Relay terminal equipment

[0057] A device that can provide relay function for a remote terminal device is called a relay terminal device.

[0058] See also Figure 1 , Figure 1 The following is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. The communication system may include but is not limited to a network device and a terminal device. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of the present disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system shown in the figure takes a network device 11, a remote terminal device 12 and a relay terminal device 13 as an example.

[0059] It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as long term evolution (LTE) system, fifth generation (5G) mobile communication system, 5G new radio (NR) system, or other future new mobile communication systems.

[0060] The network device 11 in the embodiment of the present disclosure is an entity on the network side for transmitting or receiving signals. For example, the network device 11 may be an evolved NodeB (eNB), a transmission point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the network device. The network device provided in the embodiment of the present disclosure may be composed of a centralized unit (CU) and a distributed unit (DU), wherein the CU may also be referred to as a control unit. The CU-DU structure may be used to split the protocol layer of the network device, such as a base station, and the functions of some protocol layers are placed in the CU for centralized control, and the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0061] The remote terminal device 12 and a relay terminal device 13 in the embodiment of the present disclosure can be an entity for receiving or transmitting signals on the user side, such as a mobile phone. The terminal device can also be called a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. The terminal device can be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smarthome), etc. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the terminal device.

[0062] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. A person skilled in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0063] See also Figure 2 , Figure 2 FIG. 1 is a flow chart of a method for requesting system information provided by an embodiment of the present disclosure, and the method is executed by a remote terminal device. Figure 2 As shown, the method may include but is not limited to the following steps:

[0064] Step 201: In response to the remote terminal device not storing valid system information, a system information request message is sent, where the request message carries a requested system information identifier.

[0065] Generally, when a remote terminal device is selecting or accessing a cell, if it finds that necessary information required for cell access is not stored locally, such as no valid system frame number, subcarrier spacing, etc., it can be determined that there is no valid system information block (SIB) locally.

[0066] Optionally, the valid system information is not stored, which may be that the remote terminal device does not store the SIB, or the version number of the stored SIB is different from the version number of the SIB in the broadcast message, that is, the remote terminal device cannot perform the present disclosure and does not make any limitation on this.

[0067] The optional system information identifier may be any identification information that can uniquely identify the system information to be requested, for example, it may be SIB1, SIB2, etc., and the present disclosure does not limit this.

[0068] In the present disclosure, a remote terminal device in a connected state can send a system information request message to a network device, or send a system information request message to a network device through a relay terminal device, as long as it determines that no valid SIB is stored in its system.

[0069] Optionally, if the remote terminal device sends a system information request message to the network device, the system information request message may be a system information request radio resource control (RRC) message, such as a dedicated SIB request (Dedicated SIB Request) message.

[0070] Optionally, if the remote terminal device sends a system information request message to the network device through the relay terminal device, the system information request message may be a sidelink RRC message. For example, the remote terminal device may send a remote terminal device information sidelink (RemoteUEInformationSidelink) message containing a requested system information identifier to the relay terminal device to request the relay terminal device to forward the required system information for it.

[0071] In the present disclosure, as long as the remote terminal device determines that no valid SIB is stored in its system, it can obtain the required system information by sending a system information request message to communicate based on the obtained valid system information, thereby improving the reliability of communication of the remote terminal device.

[0072] See also Figure 3 , Figure 3 FIG. 1 is a flow chart of a method for requesting system information provided by an embodiment of the present disclosure, and the method is executed by a remote terminal device. Figure 3 As shown, the method may include but is not limited to the following steps:

[0073] Step 301: In response to no valid system information being stored, the blocking timer not running, and the network device being configured with a first configuration, a system information request radio resource control RRC message is sent to the network device.

[0074] The first configuration is an on-demand system information request configuration (onDemandSIBRequest). In addition, the on-demand system information request configuration may include a blocking timer duration, and then the remote terminal device may control the blocking timer according to the blocking timer duration in the on-demand system information request configuration.

[0075] Step 302: Start the blocking timer.

[0076] Usually, after the terminal device sends a system information request RRC message, a blocking timer will be started, and during the blocking timer, the system information request RRC message cannot be sent again. Therefore, in the present disclosure, when the remote terminal device determines that no valid system information is stored and the blocking timer is not running, it can determine that the system information request RRC message can be sent at present. At this time, if the network device is configured with the first configuration, that is, the on-demand system information request configuration is obtained, the system information request RRC message sent to the network device can be used to request the required system information from the network device side.

[0077] Optionally, the blocking timer may be a T350 timer.

[0078] Optionally, the remote terminal device can directly send a DedicatedSIBRequest message to the network device to request the required system information; or, it can also send a Dedicated SIBRequest message to the network device through a relay terminal device to request the required system information; or, it can also send a RemoteUEInformationSidelink message to the relay terminal device to request the relay terminal device to forward the required system information for it. This disclosure does not limit this.

[0079] Optionally, the remote terminal device may obtain the first configuration through an RRC reconfiguration message. That is, in the present disclosure, the remote terminal device may also receive an RRC reconfiguration message sent by the network device, and the reconfiguration message carries the first configuration.

[0080] In addition, in order to avoid waste of resources caused by repeated sending of system information request RRC messages by the remote terminal device, it can start a blocking timer after sending the system information request RRC message to the network device, and no longer send the system information request RRC message during the running of the blocking timer.

[0081] Step 303: upon receiving the system information corresponding to the system information identifier, stop the blocking timer.

[0082] In the present disclosure, as long as the remote terminal device receives the requested system information, the blocking timer can be stopped, so that the terminal device can send a new system information request RRC message in time when additional system information is needed, thereby avoiding the delay in sending the new system information request RRC message due to the blocking timer not stopping in time.

[0083] Optionally, the remote terminal device may receive the system information corresponding to the system information identifier in an RRC reconfiguration message, or may receive the system information corresponding to the system information identifier in a system broadcast message; or may receive the system information corresponding to the system information identifier in a sidelink RRC message. This disclosure does not limit this. After receiving the required system information, the terminal device may perform cell selection or access based on the received system information.

[0084] In the present disclosure, when the remote terminal device determines that no valid SIB is stored in its system, the blocking timer is not running, and the network device is configured with the first configuration, the remote terminal device can send a system information request RRC message to the network device to obtain the required system information, so as to communicate based on the obtained valid system information, thereby improving the reliability of communication of the remote terminal device.

[0085] See also Figure 4 , Figure 4FIG. 1 is a flow chart of a method for requesting system information provided by an embodiment of the present disclosure, and the method is executed by a remote terminal device. Figure 4 As shown, the method may include but is not limited to the following steps:

[0086] Step 401, in response to no valid system information being stored, the blocking timer not running, and the network device not being configured with a first configuration, sending a system information request sidelink RRC message to a relay terminal device.

[0087] In the present disclosure, when the network device is not configured with the first configuration, the remote terminal device is unable to send a system information request RRC message to the network device according to the first configuration. At this time, if it is determined that no valid system information is stored, a system information request sidelink RRC message can be sent to the relay terminal device.

[0088] Step 402: Receive system information corresponding to the system information identifier sent by the relay terminal device.

[0089] Optionally, after receiving the system information required by the remote terminal device, the relay terminal device can send the received system information to the remote terminal device via a sidelink RRC message. For example, the remote terminal device can receive the system information corresponding to the system information identifier sent by the relay terminal device via a network information forwarding sidelink message (Uu Message Transfer Sidelink).

[0090] In the present disclosure, when the remote terminal device determines that no valid SIB is stored in its system and the network device is not configured with the first configuration, it can send a system information request sidelink RRC message to the relay terminal device to obtain the required system information, so as to communicate based on the obtained valid system information, thereby improving the reliability of communication of the remote terminal device.

[0091] See also Figure 5 , Figure 5 FIG. 1 is a flow chart of a method for requesting system information provided by an embodiment of the present disclosure, and the method is executed by a relay terminal device. Figure 5 As shown, the method may include but is not limited to the following steps:

[0092] Step 501: Receive a system information request message sent by a remote terminal device, where the request message carries a requested system information identifier.

[0093] Optionally, the relay terminal device may receive a system information request sent by the remote terminal device via a sidelink RRC message, such as a RemoteUEInformationSidelink message.

[0094] Among them, the type and implementation form of the system information identifier can refer to the detailed description of any embodiment of the present disclosure, and will not be repeated here.

[0095] Optionally, after receiving the system information request message sent by the remote terminal device, the relay terminal device can determine whether the local area contains system information corresponding to the system information identifier. If so, the system information corresponding to the system information identifier can be returned to the remote terminal device.

[0096] Alternatively, when the relay terminal device determines that the local system information corresponding to the system information identifier is not contained, it may also request the network device for the system information corresponding to the system information identifier. For example, the relay terminal device may request the required system information through the DedicatedSIBRequest message. Afterwards, after receiving the system information corresponding to the system information identifier, the relay terminal device may return the received system information to the remote terminal device. Among them, the relay terminal device may receive the system information corresponding to the system information identifier in the RRC reconfiguration message, or receive the system information corresponding to the system information identifier in the system broadcast message; or receive the system information corresponding to the system information identifier in the sidelink RRC message. The present disclosure does not limit this.

[0097] Optionally, the relay terminal device may send the obtained system information corresponding to the system information identifier to the remote terminal device via a sidelink RRC message. For example, the relay terminal device may send the received system information corresponding to the system information identifier to the remote terminal device via UuMessage Transfer Sidelink.

[0098] In the present disclosure, the relay terminal device can forward the system information request message to the remote terminal device according to the needs of the remote terminal device, so that the remote terminal device obtains the required system information and communicates based on the obtained valid system information, thereby improving the reliability of the communication of the remote terminal device.

[0099] See also Figure 6 , Figure 6 FIG. 1 is a flow chart of a method for requesting system information provided by an embodiment of the present disclosure, and the method is executed by a network device. Figure 6 As shown, the method may include but is not limited to the following steps:

[0100] Step 601: Receive a system information request message sent by a remote terminal device, where the request message carries a requested system information identifier.

[0101] Optionally, the network device may receive a system information request sent by a remote terminal device via a system information request RRC message, for example, via a Dedicated SIBRequest message.

[0102] Among them, the type and implementation form of the system information identifier can refer to the detailed description of any embodiment of the present disclosure, and will not be repeated here.

[0103] In addition, since the remote terminal device can only send a system information request RRC message to the network device when it receives the system information request configuration (i.e., the first configuration), in the present disclosure, the network device can also send an RRC reconfiguration message to the remote terminal device, and the reconfiguration message carries the first configuration for making a system information request.

[0104] Optionally, the first configuration may be on Demand SIB Request, which is not limited in the present disclosure.

[0105] Optionally, the network device may send the system information corresponding to the system information identifier to the remote terminal device via an RRC reconfiguration message; or, the network device may broadcast the system information corresponding to the system information identifier via a broadcast message. Afterwards, the remote terminal device may perform cell selection and access based on the acquired system information.

[0106] In the present disclosure, the network device can receive the system information request message sent by the remote terminal device, thereby providing the required system information to the remote terminal device, so that the remote terminal device communicates based on the acquired system information, thereby improving the reliability of the communication of the remote terminal device.

[0107] See also Figure 7 , which is a structural diagram of a communication device 700 provided in an embodiment of the present disclosure. Figure 7 The communication device 700 shown may include a transceiver module 701 and a processing module 702. The transceiver module 701 may include a sending module and / or a receiving module, the sending module is used to implement a sending function, the receiving module is used to implement a receiving function, and the transceiver module 701 may implement a sending function and / or a receiving function.

[0108] It is understandable that the communication device 700 may be a remote terminal device, or a device in the remote terminal device, or a device that can be used in conjunction with the remote terminal device.

[0109] The communication device 700 is on the network device side, wherein:

[0110] The transceiver module 701 is specifically used to send a system information request message, wherein the request message carries a system information identifier requested by the terminal device, and no valid system information is stored in the terminal device.

[0111] Optionally, the blocking timer is not running, and the network device is configured with a first configuration, the transceiver module 701 is specifically configured to send a system information request radio resource control RRC message to the network device, wherein the first configuration is an on-demand system information request configuration;

[0112] The processing module 702 is used to start the blocking timer.

[0113] Optionally, the transceiver module 701 is specifically used for:

[0114] Receive an RRC reconfiguration message sent by the network device, where the reconfiguration message carries the first configuration.

[0115] Optionally, the processing module 702 is further used to:

[0116] The processing module is further used for:

[0117] receiving the system information corresponding to the system information identifier in the RRC reconfiguration message, stopping the blocking timer; or,

[0118] receiving the system information corresponding to the system information identifier in a system broadcast message, stopping the blocking timer; or,

[0119] The system information corresponding to the system information identifier is received in a sidelink RRC message, and the blocking timer is stopped.

[0120] Optionally, the transceiver module 1701 is specifically used for:

[0121] The transceiver module is specifically used for:

[0122] The network device is not configured with the first configuration and sends a system information request sidelink RRC message to the relay terminal device.

[0123] It can be understood that the communication device 700 can be a relay terminal device, or a device in a relay terminal device, or a device that can be used in conjunction with a relay terminal device.

[0124] The communication device 700 is at the relay terminal device side, wherein:

[0125] The transceiver module 701 is used to receive a system information request message sent by a remote terminal device, wherein the request message carries a requested system information identifier.

[0126] Optionally, the transceiver module 701 is further used for:

[0127] The system information corresponding to the obtained system information identifier is sent to the remote terminal device via a sidelink radio resource control RRC message.

[0128] It can be understood that the communication device 700 can be a network device, a device in a network device, or a device that can be used in conjunction with a network device.

[0129] The communication device 700 is on the network device side, wherein:

[0130] The transceiver module 701 is used to receive a system information request message sent by a remote terminal device, wherein the request message carries a requested system information identifier.

[0131] Optionally, the transceiver module 701 is further used for:

[0132] An RRC reconfiguration message is sent to the remote terminal device, where the reconfiguration message carries a first configuration for performing a system information request.

[0133] Optionally, the transceiver module 701 is further used for:

[0134] Sending the system information corresponding to the system information identifier to the remote terminal device through an RRC reconfiguration message; or,

[0135] The system information corresponding to the system information identifier is broadcasted through a broadcast message.

[0136] In the present disclosure, when the remote terminal device determines that no valid SIB is stored in its system, it can obtain the required system information by sending a system information request message to communicate based on the obtained valid system information, thereby improving the reliability of communication of the remote terminal device.

[0137] See also Figure 8 , Figure 8 800 is a schematic diagram of the structure of another communication device provided in an embodiment of the present disclosure. The communication device 800 may be a network device, a remote terminal device, a relay terminal device, a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the terminal device to implement the above method. The device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

[0138] The communication device 800 may include one or more processors 801. The processor 801 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.

[0139] Optionally, the communication device 800 may further include one or more memories 802, on which a computer program 804 may be stored, and the processor 801 executes the computer program 804 so that the communication device 800 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory 802. The communication device 800 and the memory 802 may be provided separately or integrated together.

[0140] Optionally, the communication device 800 may further include a transceiver 805 and an antenna 806. The transceiver 805 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function. The transceiver 805 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., and is used to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is used to implement a transmitting function.

[0141] Optionally, the communication device 800 may further include one or more interface circuits 807. The interface circuit 807 is used to receive code instructions and transmit them to the processor 801. The processor 801 runs the code instructions to enable the communication device 800 to perform the method described in the above method embodiment.

[0142] The communication device 800 is a remote terminal device: the processor 801 is used to execute Figure 3 Step 302, step 303, etc.

[0143] The communication device 800 is a relay terminal device: the transceiver 805 is used to execute Figure 5 Step 501 in .

[0144] The communication device 800 is a network device: the transceiver 805 is used to perform Figure 6 Steps in Figure 6 Step 601 etc.

[0145] In one implementation, the processor 801 may include a transceiver for implementing receiving and sending functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0146] In one implementation, the processor 801 may store a computer program 803, which runs on the processor 801 and enables the communication device 800 to perform the method described in the above method embodiment. The computer program 803 may be fixed in the processor 801, in which case the processor 801 may be implemented by hardware.

[0147] In one implementation, the communication device 80 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure can be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channelmetal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0148] The communication device described in the above embodiments may be a network device or an access network device (such as the terminal device in the above method embodiment), but the scope of the communication device described in the present disclosure is not limited thereto, and the structure of the communication device may not be limited thereto. Figure 8 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0149] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0150] (2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and computer programs;

[0151] (3) ASIC, such as modem;

[0152] (4) Modules that can be embedded in other devices;

[0153] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0154] (6)Others

[0155] For the case where the communication device may be a chip or a chip system, see Fig. 9 Schematic diagram of the chip structure shown. Fig. 9 The chip shown includes a processor 901 and an interface 903. The number of the processor 901 may be one or more, and the number of the interface 903 may be multiple.

[0156] For the case where the chip is used to implement the functions of the remote terminal device in the embodiment of the present disclosure:

[0157] Interface 903, used to execute Figure 2 Step 201 in; Figure 3 Step 301 etc.

[0158] For the case where the chip is used to implement the function of the relay terminal device in the embodiment of the present disclosure:

[0159] Interface 903, used to execute Figure 5 Step 501 in .

[0160] For the case where the chip is used to implement the functions of the network device in the embodiment of the present disclosure:

[0161] Interface 903, used to execute Figure 6 Step 601 in .

[0162] Optionally, the chip further includes a memory 903, and the memory 903 is used to store necessary computer programs and data.

[0163] Those skilled in the art may also understand that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the functions described for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present disclosure.

[0164] The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0165] The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0166] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the process or function described in the embodiment of the present disclosure is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0167] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can 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. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0168] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0169] Those skilled in the art can understand that the various numerical numbers such as first and second involved in the present disclosure are only used for distinction for convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

[0170] At least one in the present disclosure may also be described as one or more, and a plurality may be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no order of precedence or size between the technical features described by the "first", "second", "third", "A", "B", "C" and "D".

[0171] The corresponding relationships shown in the tables in the present disclosure can be configured or predefined. The values ​​of the information in each table are only examples and can be configured as other values, which are not limited by the present disclosure. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships illustrated in each table. For example, in the table in the present disclosure, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also be other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables.

[0172] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0173] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

[0174] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0175] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0176] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A method for requesting system information, characterized in that: Executed by a remote terminal device, the method includes: The remote terminal device is in a connected state; In response to the remote terminal device not storing valid system information, sending a system information request message, wherein the request message carries a requested system information identifier; The sending of the system information request message includes: In response to the blocking timer not running and the network device being configured with a first configuration, sending a system information request radio resource control (RRC) message to the network device through the relay terminal device, wherein the first configuration is an on-demand system information request configuration; Starting the blocking timer; The method further comprises: A first RRC reconfiguration message sent by the network device is received, where the first RRC reconfiguration message carries the first configuration.

2. The method according to claim 1, characterized in that Also includes: receiving the system information corresponding to the system information identifier in a second RRC reconfiguration message, and stopping the blocking timer; or, receiving the system information corresponding to the system information identifier in a system broadcast message, stopping the blocking timer; or, The system information corresponding to the system information identifier is received in a sidelink RRC message, and the blocking timer is stopped.

3. The method according to any one of claims 1-2, characterized in that: The sending of the system information request message comprises: The network device is not configured with the first configuration and sends a system information request sidelink RRC message to the relay terminal device.

4. A method for requesting system information, characterized in that: Executed by a network device, the method includes: Receiving a system information request message sent by a remote terminal device, wherein the request message carries a requested system information identifier; the remote terminal device is in a connected state; The remote terminal device sends a system information request message, including: In response to the blocking timer not running and the network device being configured with a first configuration, sending a system information request radio resource control (RRC) message to the network device through the relay terminal device, wherein the first configuration is an on-demand system information request configuration; starting the blocking timer; The method further comprises: A first RRC reconfiguration message is sent to the remote terminal device, wherein the first RRC reconfiguration message carries the first configuration.

5. The method according to claim 4, characterized in that Also includes: Sending the system information corresponding to the system information identifier to the remote terminal device through a second RRC reconfiguration message; or, The system information corresponding to the system information identifier is broadcasted through a broadcast message.

6. A remote terminal device, characterized in that: The remote terminal device comprises: a transceiver module and a processing module; In response to the remote terminal device not storing valid system information, the transceiver module sends a system information request message, the request message carries a requested system information identifier, and the remote terminal device is in a connected state; In response to the blocking timer not running and the network device being configured with a first configuration, the transceiver module sending a system information request radio resource control RRC message to the network device through the relay terminal device, wherein the first configuration is an on-demand system information request configuration; The processing module is used to start the blocking timer; The transceiver module is further used to receive a first RRC reconfiguration message sent by the network device, where the first RRC reconfiguration message carries the first configuration.

7. The remote terminal device according to claim 6, characterized in that: The processing module is further used for: receiving the system information corresponding to the system information identifier in a second RRC reconfiguration message, and stopping the blocking timer; or, receiving the system information corresponding to the system information identifier in a system broadcast message, stopping the blocking timer; or, The system information corresponding to the system information identifier is received in a sidelink RRC message, and the blocking timer is stopped.

8. The remote terminal device according to any one of claims 6 to 7, characterized in that: The transceiver module is specifically used for: The network device is not configured with the first configuration and sends a system information request sidelink RRC message to the relay terminal device.

9. A network device, characterized in that: The network equipment includes: A transceiver module, configured to receive a system information request message sent by a remote terminal device, wherein the request message carries a requested system information identifier, and the remote terminal device is in a connected state; The remote terminal device sends a system information request message, including: In response to the blocking timer not running and the network device being configured with a first configuration, the remote terminal device sending a system information request radio resource control RRC message to the network device via a relay terminal device, the first configuration being an on-demand system information request configuration; starting the blocking timer; The transceiver module is further used to send a first RRC reconfiguration message to the remote terminal device, and the first RRC reconfiguration message carries the first configuration.

10. The network device according to claim 9, characterized in that: The transceiver module is also used for: Sending the system information corresponding to the system information identifier to the remote terminal device through a second RRC reconfiguration message; or, The system information corresponding to the system information identifier is broadcasted through a broadcast message.

11. A communication device, characterized in that: The device includes a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device performs the method as claimed in any one of claims 1 to 3, or performs the method as claimed in any one of claims 4 to 5.

12. A computer-readable storage medium, used for storing instructions, which, when executed, implement the method according to any one of claims 1 to 3, or implement the method according to any one of claims 4 to 5.

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