CN114828156A

CN114828156A - Method and device for sending system information

Info

Publication number: CN114828156A
Application number: CN202110065648.7A
Authority: CN
Inventors: 曹春燕; 邓云
Original assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Current assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-07-29

Abstract

A method and a device for sending system information relate to the technical field of communication. Wherein, the method comprises the following steps: when the first system information to be forwarded is received, the first device monitors whether the system information forwarded by the second device exists. The distance between the second device and the first device is less than or equal to a first threshold, or the second device is located within the coverage of a network device serving the first device; and if the first equipment does not monitor the system information forwarded by the second equipment, the first equipment forwards the first system information. The first device monitors whether the system information is forwarded by the surrounding second devices before forwarding the system information, and the first device forwards the system information again when the system information is not forwarded by the second device, so that the possibility that different devices repeatedly broadcast the system information is reduced, and system congestion and system resource waste are effectively reduced.

Description

Method and device for sending system information

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for sending system information.

Background

In a Side Link (SL) relay (relay) scenario, an existing protocol supports a relay User Equipment (UE) to forward system information of a serving cell to a remote UE (remote UE), and the UE may send the system information to the remote UE through broadcast, multicast, or dedicated signaling. If all the devices forward the system information of the serving cell in a broadcast manner, for one of the system information, different devices may repeatedly broadcast the system information, which may cause system congestion and waste of resources when a large number of devices exist in the network.

Disclosure of Invention

The embodiment of the application provides a method and a device for sending system information, so that the first device monitors and then forwards the system information before forwarding the system information, and system congestion and system resource waste can be effectively reduced.

In a first aspect, an embodiment of the present application provides a method for sending system information, where the method includes:

when first system information to be forwarded exists, monitoring whether the system information forwarded by second equipment exists by first equipment, wherein the distance between the second equipment and the first equipment is smaller than or equal to a first threshold value, or the second equipment is located in the coverage range of network equipment serving the first equipment;

and if the first equipment does not monitor the system information forwarded by the second equipment, the first equipment forwards the first system information.

In a second aspect, an embodiment of the present application provides an apparatus for sending system information, where the apparatus includes:

the processing unit is used for monitoring whether system information forwarded by second equipment exists or not when first system information to be forwarded is detected, wherein the distance between the second equipment and the device is smaller than or equal to a first threshold value, or the second equipment is located in the coverage range of network equipment serving the device;

a receiving unit, configured to forward the first system information when the processing unit does not monitor the system information forwarded by the second device.

In a third aspect, an embodiment of the present application provides a network device, where the network device is configured to support the first device to implement the method in any of the first aspects.

In a fourth aspect, an embodiment of the present application provides a chip, where the chip is configured to monitor whether there is system information forwarded by a second device when first system information to be forwarded is detected, where a distance between the second device and a device where the chip is located is smaller than or equal to a first threshold, or the second device is located within a coverage area of a network device serving the device where the chip is located;

the chip is further configured to forward the first system information when the system information forwarded by the second device is not monitored.

In a fifth aspect, the present disclosure provides a chip module, which includes a transceiver component and a chip, wherein,

the chip is used for monitoring whether system information forwarded by second equipment exists or not when first system information to be forwarded is obtained, wherein the distance between the second equipment and the equipment where the chip module is located is smaller than or equal to a first threshold value, or the second equipment is located in the coverage range of network equipment serving the equipment where the chip module is located;

and the transceiver component is used for forwarding the first system information when the chip does not monitor the system information forwarded by the second device.

In a sixth aspect, embodiments of the present application provide an electronic device, which includes a processor, a memory, a communication interface, and one or more programs, which are stored in the memory and configured to be executed by the processor, the programs including instructions for performing the steps of the method of any of the first aspects.

In a seventh aspect, this application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, where the computer program, when executed on an electronic device, performs the method of any one of the above first aspects.

In an eighth aspect, embodiments of the present application provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps as described in the first aspect of the embodiments of the present application. The computer program product may be a software installation package.

According to the technical scheme, when first system information to be forwarded is available, first equipment monitors whether the system information forwarded by second equipment exists, and the distance between the second equipment and the first equipment is smaller than or equal to a first threshold value, or the second equipment is located in the coverage range of network equipment serving the first equipment; and if the first equipment does not monitor the system information forwarded by the second equipment, the first equipment forwards the first system information. The first device monitors whether the system information is forwarded by the surrounding second devices before forwarding the system information, and the first device forwards the system information again when the system information is not forwarded by the second device, so that the possibility that different devices repeatedly broadcast the system information is reduced, and system congestion and system resource waste are effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application;

fig. 2 is a schematic diagram of another wireless communication system provided in an embodiment of the present application;

fig. 3 is a flowchart illustrating a method for sending system information according to an embodiment of the present application;

fig. 4 is a flowchart illustrating another method for sending system information according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an apparatus for sending system information according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

It should be understood that the technical solution of the embodiment of the present application may be applied to a Long Term Evolution (LTE) system, a 5G communication system (e.g., New Radio (NR)), a communication system in which multiple communication technologies are merged (e.g., a communication system in which an LTE technology and an NR technology are merged), or various future communication systems, such as a 6G communication system and a 7G communication system, which is not limited in this embodiment of the present application. The technical solution of the embodiment of the present application is also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-any-object communication (Vehicle-to-event) architecture, and the like.

It should be noted that the conventional wireless communication system has a limited number of supported connections and is easy to implement. However, with the development of communication technology, the wireless communication system may support not only a conventional wireless communication system, but also a device to device (D2D) communication, a machine to machine (M2M) communication, a Machine Type Communication (MTC), a vehicle to vehicle (V2V) communication, a vehicle to internet (V2X) communication, a narrowband internet of things (NB-IoT) communication, and the like, and thus the technical solution of the embodiment of the present application may also be applied to the above wireless communication system.

Alternatively, the wireless communication system of the embodiment of the present application may be applied to beamforming (beamforming), Carrier Aggregation (CA), Dual Connectivity (DC), or Standalone (SA) deployment scenarios.

The embodiment of the application relates to relay user equipment. The relay user equipment includes equipment with a wireless communication function, and may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in smart home (smart home), and the like. The relay user equipment may also be a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, a computer device or other processing device connected to a wireless modem, a terminal device in a future 5G Network, or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like. Specifically, the relay user equipment may be a user equipment, an access terminal, a subscriber unit, a subscriber Station, a Mobile Station (MS), a remote Station, a remote terminal, a Mobile device, a user terminal, a Wireless communication device, a user agent or a user equipment, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) Station, a Personal Digital Assistant (PDA), a terminal equipment in a 5G network or a future evolution network, and the like, which is not limited in the embodiment of the present application.

The embodiment of the application relates to a network device. The Network device may be a device for communicating with the terminal device, and includes a Radio Access Network (RAN) device. For example, the Network device may also be a node device in a Wireless Local Area Network (WLAN), such as an Access Controller (AC), a gateway, or a WIFI Access Point (AP); for another example, the network device may also be an access network device (e.g., a gNB, a CU, a DU) in an NR system, and a node B (ng-eNB) that continues to evolve, where the gNB and the terminal device communicate with each other by using an NR technology, the ng-eNB and the terminal device communicate with each other by using an E-utra (evolved Universal Radio access) technology, and both the gNB and the ng-eNB may be connected to a 5G core network. The network device in the embodiment of the present application also includes a device that provides a network device function in a future new communication system, and the like.

For example, referring to fig. 1, fig. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present disclosure. As shown in fig. 1, the wireless communication system 10 may include a remote terminal 110, a relay user equipment 120, and a network device 130. The Remote terminal 110(Remote UE) may be in the coverage area of the network device 130 or out of the coverage area, so the Remote terminal 110 may forward system information, signaling or data, etc. through the relay user equipment 120 in the coverage area of the network device 130. Among them, the relay user equipment 120 (device) is a terminal device capable of providing a relay service capability, and the relay user equipment 120 may be one relay user equipment (i.e., target relay user equipment) determined by the remote terminal 110 through a relay discovery procedure, or the relay user equipment 120 may be one relay user equipment (i.e., target relay user equipment) where the remote terminal 110 resides. One network device may include a plurality of relay user devices 120, and each relay user device 120 may provide relay service for a plurality of remote terminals 110.

It should be noted that, the relay user equipment 120 and the network equipment 130 may establish communication through the Uu interface. When the remote terminal 110 is in an RRC CONNECTED state (RRC _ CONNECTED), a communication connection is established between the remote terminal 110 and the relay user equipment 120 through the PC5 interface, and the cell corresponding to the network device 130 is a serving cell of the relay user equipment 120. At this time, the relay user equipment 120 and the network equipment 130 may adopt an existing terminal-to-serving cell communication mechanism, and system information, signaling or data transmission may be performed between the relay user equipment 120 and the remote terminal 110 through a direct communication mechanism. For downlink, the relay user equipment 120 may forward system information, signaling, or data sent by the network equipment 130 to the remote terminal 110; for uplink, the relay user equipment 120 may forward the signaling or data sent by the remote terminal 110 to the network equipment 130.

In addition, when the remote terminal 110 is in an RRC IDLE state (RRC _ IDLE) or an RRC INACTIVE state (RRC _ INACTIVE), the remote terminal 110 resides under the relay user equipment 120. At this time, although no communication connection is established between the remote terminal 110 and the relay user equipment 120, the remote terminal 110 may also forward system information or signaling through the relay user equipment 120.

Optionally, the wireless communication system 10 may further include a plurality of network devices, and each network device may include a certain number of remote terminals and/or a certain number of relay user equipments within a coverage area thereof, which is not limited in particular herein.

Optionally, the wireless communication system 10 may further include other network entities such as a network controller, a mobility management entity, etc., which are not specifically limited herein.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1. Proximity-based services (ProSe) communication

The system and Service Aspects (SA) group of the third Generation Partnership Project (3rd Generation Partnership Project,3GPP) started a related study of ProSe communication at Release12 (Release 12). In ProSe communication, terminals may communicate directly with each other through a PC5 interface, a PC5 interface is a direct interface between terminals, and a communication interface between a terminal and a network device is referred to as a Uu interface.

Because an actual network deployment has a coverage blind spot, and a terminal in the coverage blind spot cannot communicate with a network device, a communication architecture of a relay user equipment (UE-to-network relay) is introduced in an SA group of 3GPP when Prose communication is studied, and network coverage is improved by forwarding a data service through the relay user equipment to solve the problem of coverage blind spot. Wherein the relay user equipment may be within a coverage area or outside the coverage area of the network equipment.

For example, please refer to fig. 2. Since the terminal device 210A is outside the coverage of the network device 220, the terminal device 210A can access the network through the terminal 220B that is within the coverage of the network device 220. The terminal device 220B is a relay user equipment (or referred to as UE-to-network relay) capable of providing a relay service capability. In addition, direct communication between the terminal device 210C and the terminal device 210D can be performed through the PC5 interface, and communication between the terminal device 210E and the terminal device 210G can be performed through the terminal device 210F. Among other things, terminal device 220F is a relay terminal (or UE-to-UE relay) capable of providing relay service capabilities.

2. Side link (Sidelink, SL)

SL communication is a wireless communication directly between two or more terminal devices. In SL communication, two or more terminal devices in geographical proximity to each other may communicate directly without going through an eNodeB or BS or core network. Thus, data transmission in SL communication is different from typical cellular network communication (e.g., sending data to a BS (i.e., uplink transmission) or receiving data from a BS (i.e., downlink transmission)). In SL communication, data is transmitted directly from a source terminal device (i.e., a transmitting terminal device) to a target terminal device (i.e., a receiving terminal device) through a unified air interface such as a PC5 interface, without passing through a BS.

3. System Information (SI)

The NR communication system classifies system information of the NR Uu interface more definitely based on the LTE communication system, thereby ensuring that the terminal can normally camp on a cell providing service for the terminal, and provides necessary common channel information of its access network and ensures its mobility in a non-connected state.

The system information may be divided into a Master Information Block (MIB) and a series of System Information Blocks (SIBs) according to the importance of the system information content and the propagation manner.

In order to more reasonably arrange the utilization of network resources, the propagation modes of system information can be divided into a mode of periodic broadcast and a mode of sending on-demand (on-demand) request based on a terminal. In the periodic broadcast mode, the base station may always send the calculated SI within a system information time window (SI-window) corresponding to the SI. In the mode of requesting transmission on demand based on the terminal, if the terminal does not request to transmit the SI, the base station does not transmit the SI to the terminal; if the terminal has a request to send the SI, the base station sends the SI to the terminal at a certain moment in the calculated system information time window corresponding to the SI.

The system information may be divided into MIB and a series of SIBs, or may be divided into Minimum system information (Minimum SI) and Other system information (Other SI). The Minimum SI may include MIB and SIB1, which are transmitted through a Broadcast Channel (BCH) and a downlink shared channel (DL-SCH), respectively, and the propagation mode of the Minimum SI is periodic broadcast. Other SIBs are collectively called Other SI, and the propagation method thereof may be a periodic broadcast or a transmission method based on a terminal request on demand. Meanwhile, the terminal can normally reside or access the current cell only when reading the Minimum SI of the current cell, and the current cell is not allowed to reside if the base station does not broadcast the complete Minimum SI.

For the MIB, the MIB contains cell barring status related information and a number of physical layer parameters needed to acquire the SIB1 for the current cell. The transmission period of the MIB is fixed to 80ms, and the same information can be repeatedly transmitted within 80 ms. If the terminal receives the MIB, the MIB is stored, and the following judgment process is executed according to the content of the MIB: when the terminal is in an idle state, an inactive state or a connected state, if the current cell is forbidden to access (Barred), judging whether cell reselection aiming at other cells is allowed on the same frequency point or not according to intraFreqReselection information; and if the current cell allows access, acquiring time-frequency parameters of a control channel indicating the reception of the SIB1 and the like.

For SIB1, SIB1 contains some special system setup information for the current cell, such as parameters needed for initial access, current cell common configuration, and scheduling information for the SIBs in Other SI. The scheduling information of each SIB in the Other SI includes Other SI scheduling and usage rule parameters, status indication information indicating whether each SIB is currently transmitted, system information area Identification (ID), and configuration status of SIBs that need to be requested to be broadcasted.

In addition, the transmission period of the SIB1 is 160ms, the same information can be repeatedly transmitted within 160ms, and the default repetition period is 20 ms. If the terminal receives SIB1, SIB1 is stored and the following procedure is performed depending on its content: storing cell access related information (including plmn-IdentityList, trackingAreaCode, cellIdentity, etc.); applying a serving cell common configuration parameter; the validity of each SIB in Other SI was examined. If the terminal stores the effective version, the version is used; otherwise, the terminal decides to directly read the system information or initiate a request to the base station according to the scheduling information of each SIB in Other SI in SIB1 and the broadcasting situation of currently required SIBs.

For Other SI, an Other SI may include one or more SIBs (e.g., SIB2/SIB3, etc.). The transmission of each SIB in the Other SI is performed by a dynamic scheduling manner within a periodic system information time window (SI-window). Wherein, SIBs with the same period in Other SI can be sent in the same SI, and each SI corresponds to a SI-window, and SI-windows of different SIs have the same length but are not allowed to overlap each Other.

If the terminal wants to acquire the Other SI, it needs to determine the sequence value of each SIB according to the scheduling information of each SIB in the Other SI in SIB1, and then calculate the SI-window position corresponding to each SIB. The base station may send the corresponding SIB multiple times within one SI-window, and if the terminal does not successfully acquire in the SI-window, the base station may continue to acquire in the subsequent SI-window corresponding to the SIB.

The terminal needs to store the MIB, SIB1 or other SIBs acquired from the current camping or serving cell. Meanwhile, the effective time of each system information version after the validity is confirmed is at most 3 hours, and the system information version is deleted by the terminal after the effective time is exceeded.

The MIB and the SIB1 are both cell-level specific messages, i.e. after a terminal accesses or camps in a current cell, the correctness and validity of the MIB and SIB1 of the current cell must be guaranteed.

Each SIB in Other SI can be configured as system information at a cell level or an area level. The system information of the cell level is only used in a certain cell and is invalid after the terminal leaves the cell; the system information at the area level is common within a set SI area, and one SI area may contain one or more cells.

In Release 17, NR also introduces UE-to-network Release communication architecture. In relay communication, in addition to relaying data traffic for its remote UE, the device may also relay system information of the serving cell for its remote UE, in order to provide the remote UE with necessary common channel information and other network configuration information required for accessing the network. In the sidelink relay scenario, the existing protocol supports the device to forward the system information of the serving cell to the remote UE, and the device may send the system information to the remote UE through broadcast, multicast, or dedicated signaling. If all the devices forward the system information of the serving cell in a broadcast manner, for one of the system information, different devices may repeatedly broadcast the system information, which may cause system congestion and waste of resources when a large number of devices exist in the network.

In order to solve the above problem, an embodiment of the present application provides a method for sending system information, where when a first device needs to forward a certain system information, the first device may first monitor whether there is system information forwarded by other devices around the first device, and when the system information forwarded by other devices is not monitored, the first device forwards the system information that needs to be forwarded, which is beneficial to reducing the possibility that different devices repeatedly broadcast the system information, and further effectively reduces system congestion and system resource waste.

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Take the device to be forwarded the first system information as an example. Referring to fig. 3, fig. 3 is a flowchart illustrating a method for sending system information according to an embodiment of the present application, where the method may be executed on the communication system shown in fig. 1, and specifically includes the following steps:

s310, when the first system information to be forwarded is to be forwarded, the first device monitors whether the system information forwarded by the second device exists.

For example, the distance between the second device and the first device is less than or equal to the first threshold. That is, in the monitoring process, the first device may monitor whether there is system information forwarded by other devices within a certain distance range. Thereby helping to reduce the power consumption of the first device. For example, the first device listens in a first range for system information forwarded by other devices. The first range is a circular area with the first device as the center and the radius as the first threshold. In some embodiments, the first threshold may be configured by the network device, or may be set by the first device autonomously, or the first threshold may be predefined before the device leaves a factory, which is not limited in this embodiment of the present application. For example, the first threshold may take a value of 10Km (kilometer), 15Km, 20Km, or the like, which is not limited.

In other embodiments, the second device may also be located within the coverage of a network device (e.g., a base station) serving the first device.

Wherein the first device and the second device may be Relay terminals or Relay user equipments (Relay UEs) capable of providing Relay service capability. Specifically, the first device is a relay user equipment where a Remote device (Remote UE) resides, and may forward system information, signaling, data, or the like sent by the network device. The second device is a relay user equipment with the distance from the first device being smaller than or equal to a first threshold.

And S320, if the first equipment does not monitor the system information forwarded by the second equipment, the first equipment forwards the first system information.

In the embodiment of the application, under the condition that the first device has the first system information to be forwarded, if the first device does not monitor the system information forwarded by the second device, the first device forwards the first system information which needs to be forwarded again, so that the possibility that different devices repeatedly forward the system information is reduced, and further the system congestion and the waste of system resources are reduced.

For example, a serving cell may include multiple devices, each of which may serve one or more Remote UEs. Generally, after a plurality of devices receive system information sent by a network device, the plurality of devices all need to forward the system information, so that a Remote UE in the transmission range of the plurality of devices can receive the system information forwarded by the plurality of devices. In this embodiment of the present application, when the first device receives the first system information sent by the network device, the first device may adopt a mode of monitoring first and then forwarding, that is, whether there is system information that is forwarded by the second device around is monitored first, and then whether to forward the first system information to be sent by itself is further determined, so as to help reduce the possibility that different devices repeatedly forward the system information, and further help to reduce system congestion and system resource waste.

Further, in some embodiments, the first device may listen for system information forwarded by the second device based on:

the first method is as follows: when the first system information to be forwarded is received, the first device monitors whether the system information forwarded by the second device exists in the monitoring duration. Therefore, the monitoring overhead of the first device can be reduced, and the requirements of the far-end device under different application scenes can be met.

For example, in the embodiment of the present application, the listening duration may satisfy one of the following manners: the monitoring time is a period of time within a preset time, the monitoring time is configured by a network, the monitoring time is preconfigured by a system, the monitoring time is specified by a standard protocol, the monitoring time is determined by the timeout time of a preset timer, and the preset time is configured by the network, specified by the standard protocol or preconfigured by the system.

It should be noted that the listening duration in the embodiment of the present application may be indicated to the first device by the network device, may be preconfigured by the system, may be specified by a standard protocol specified by 3GPP, may be determined by an timeout duration of a preset timer, or may be a period of time within a preset time. As for the preset timer, it can be understood that, when the first device forwards the first system information, the first device may start the preset timer first, and monitor whether there are other relay user devices in the communication range to broadcast the first system information before the preset timer expires, where the preset timer may be network configuration or system pre-configuration. For the preset time, it can be understood that, when the first relay forwards the first system information, the first relay may randomly monitor a period of time t (i.e., a monitoring duration), t ∈ (0, X), and X represents the preset time.

The second method comprises the following steps: when the first system information to be forwarded comprises necessary system information, the first equipment monitors whether the system information forwarded by the second equipment exists.

Illustratively, the first system information includes necessary system information (emergency SIBs) that the first device is actively forwarding to the Remote UE. The necessary system information may be understood as system information necessary for the Remote UE to normally camp on or access the current cell, and the propagation mode may be periodic broadcast, or multicast, or transmitted through dedicated signaling, etc. Take periodic broadcast as an example. The network equipment broadcasts necessary system information periodically, and the first equipment forwards the system information to the Remote UE actively, so that the terminal can normally reside or access the current cell. Further, the necessary system information may be actively sent by the network device when the system information is updated, or may be sent according to a system information request sent by the Remote UE.

Further, the necessary system information in the embodiment of the present application may include a master information block (e.g. MIB indicating system frame number SFN), a system information block type 1 (e.g. SIB1 indicating public land mobile network PLMN and cell information), a system information block type 2 (e.g. SIB2 indicating cell access barring information), and direct communication system information block related information. The related information of the direct communication system information block may include LTE device to device (FeD 2D) system information block related information (e.g., SIB18/SIB 19).

In some implementations, the granularity of the first system information may be SI or SIB. The first system information may be SIBs of the current cell actively sent by the network device or requested by the Remote UE, or may be SI including SIBs of the current cell actively sent by the network device or requested by the Remote UE. The first device may forward necessary system information blocks, such as SIB1, to the Remote UE; some system information blocks SIB or system information SI may also be sent after the request of the Remote UE. When the serving cell transmits system information to the first device, the SIB1 is separately transmitted, and for other SIBs, the serving cell is transmitted through the SI by scheduling information of the other SIBs indicated in the SIB1, and one SI may contain one or more SIBs. For example, the serving cell may transmit SIB2+ SIB3 through one SI. If a certain Remote UE requests SIB2 from the serving device, the first device may send SIB2 to the Remote UE or may directly forward the SI received from the serving cell containing SIB2+ SIB 3.

In the embodiment of the application, different system information granularities are adopted in different scenes, so that the flexibility and the efficiency of network configuration of the system information in the system information request process can be improved.

It should be noted that, in the embodiment of the present application, each SIB in the first system information may be configured as system information at a cell level or an area level. The SIBs of the cell level are used only in the current cell and are invalid after the Remote UE leaves the current cell; the region-level SIBs are commonly used in a set system information region, and one system information region may include one or more cells.

In addition, in other embodiments of the present application, when the first device has the first system information to be forwarded, if the network device indicates that the first device does not listen to the system information forwarded by the second device, the first device may directly forward the first system information without listening to whether there is system information forwarded by the second device. Or, when the first device has the first system information to be forwarded, if the first system information does not include the necessary system information, the first device may also directly forward the first system information without monitoring whether there is system information forwarded by the second device.

In addition, in some embodiments, if the first device monitors that the system information forwarded by the second device (taking the second system information as an example), the first device obtains a first cell identifier, where the first cell identifier is a cell identifier of a cell to which the second system information belongs; and comparing the first cell identity with a second cell identity, the second cell identity being a cell identity of a cell to which the first system information belongs. And when the first cell identification is different from the second cell identification, the first equipment forwards the first system information.

In this embodiment, the first device may obtain a cell identifier (e.g., a first cell identifier or a second cell identifier) from the following messages or signaling: PC5 message with Remote UE, PC5-RRC signaling or signaling specified by standard protocols, such as Sidelink Control Information (SCI) of physical downlink control channel (PSCCH), RRC signaling, etc.

Therefore, when the first device monitors the system information forwarded by the second device, the first device may obtain the first cell identifier, and compare the first cell identifier with the cell identifier (the second cell identifier) of the first system information forwarded by the first device. If the cell identifier corresponding to the system information forwarded by the second device is not the cell identifier of the first system information forwarded by the first device, that is, the first cell identifier is different from the second cell identifier, it indicates that the system information forwarded by the second device and the target system information to be sent by the first device are not the system information of the same cell, so that the first device can forward the first system information.

Optionally, if the first cell identifier is the same as the second cell identifier, the first device may determine whether the second system information is the same as the first system information; if the second system information is different from the first system information, the first device forwards part or all of the first system information.

In the embodiment of the present application, the second system information is different from the first system information, and may include that part or all of the second system information is the same as that of the first system information. For example, the second system information includes an information block 1 and an information block 2, the first system information includes an information block 2 and an information block 3, and the second system information is partially different from the first system information. As another example, the second system information includes an information block 1 and an information block 2, the first system information includes an information block 4 and an information block 3, and the second system information is completely different from the first system information.

For example, the first device may forward a portion of the first system information that is different from the second system information when the second system information is different from the first system information portion. For example, in the case where the second system information includes information block 1 and information block 2, and the first system information includes information block 2 and information block 3, the first device may forward information block 3 without forwarding information block 2, thereby contributing to reduction of signaling overhead.

Alternatively, as yet another example, the first device may forward all of the first system information when the second system information is completely different from the first system information. For example, in the case where the second system information includes information block 1 and information block 2, and the first system information includes information block 4 and information block 3, both information block 4 and information block 3 in the first system information are forwarded by the first device.

It should be noted that, in the case that the first cell identifier is the same as the second cell identifier, the second system information and the first system information to be sent by the first device belong to the system information of the same cell. The first device may compare the second system information with the first system information to further determine whether the second device forwards the first system information that the first device needs to forward.

For example, the first device may match information blocks in the second system information with information blocks in the first system information, respectively. And if the information block in the second system information is partially matched with or completely unmatched with the information block in the first system information, the second system information is different from the first system information. The first device may forward the first system information, or an information block in the first system information that does not match an information block in the second system information, when the information block in the second system information partially matches an information block in the first system information. The first device may forward the first system information when the information block in the second system information does not match the information block in the first system information at all.

Further, in some embodiments, if the second system information is partially or completely the same as the first system information, it is determined whether the first signal quality is lower than a first threshold, where the first signal quality is a signal quality when the second device forwards the system information forwarded by the second device; and if the first signal quality is lower than the first threshold, the first equipment forwards the first system information.

When the information block in the second system information is partially or completely matched with the information block in the first system information, the first device may calculate a first signal quality of the second device, and according to the first signal quality of the second device, the first device may know whether the Remote UE can completely and clearly receive the second system information. The first signal quality may be measured by the first device when forwarding the system information forwarded by the second device according to the second device. Illustratively, the first signal quality may also be measured by the first device from a reference signal transmitted by the second device. The first signal quality may include: reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Received Signal Strength Indicator (RSSI).

Specifically, when the first signal quality is lower than the first threshold, the Remote UE may not receive or may not completely and clearly receive the system information transmitted by the second device. Therefore, in order to avoid the problem that the Remote UE does not receive the system information sent by the second device, the first device forwards the first system information when the first signal quality is lower than the first threshold. The first threshold may be network device configured, such as-60 dBm, -55dBm, -50dBm, or-45 dBm. The first threshold may also be updated by the first device according to a policy, for example, for a Remote UE with an ultra-high clear streaming media service requirement, the first threshold may be set to-55 dBm; for Remote UEs with massive large connections, the first threshold may be set to-60 dBm.

Optionally, when the second system information is the same as the first system information, that is, an information block in the system information forwarded by the second device partially matches an information block in the first system information, and the first signal quality is higher than the first threshold, the first device may forward the first system information or an information block in the first system information that does not match the information block in the system information forwarded by the second device. For example, the first device needs to forward SIB2+ SIB3, which hears that the second device forwarded SIB2, at which point the first device may forward only SIB3 or still forward SIB2+ SIB 3.

Optionally, when the system information forwarded by the second device is completely the same as the first system information, that is, an information block in the system information forwarded by the second device is completely matched with an information block in the first system information, and the first signal quality is higher than the first threshold, the first device cancels the forwarding of the current target information message.

It should be noted that, after the first device cancels the forwarding of the current target information message, if the Remote UE requests the network device for the first system information through the first device, the first device may forward the first system information to the Remote UE again.

It can be seen that in the method for sending system information by a device provided in the embodiment of the present application, when first system information is to be forwarded, a first device monitors whether there is system information forwarded by a second device, where a distance between the second device and the first device is less than or equal to a first threshold, or the second device is located in a coverage area of a network device serving the first device; and if the first equipment does not monitor the system information forwarded by the second equipment, the first equipment forwards the first system information. The first device monitors whether the system information is forwarded by the surrounding second devices before forwarding the system information, and the first device forwards the system information again when the system information is not forwarded by the second device, so that the possibility that different devices repeatedly broadcast the system information is reduced, and system congestion and system resource waste are effectively reduced.

Based on the above examples, the embodiment of the present application further provides a flowchart of a method for sending system information, and as shown in fig. 4, the method specifically includes the following steps:

s410, the network device sends first system information and first indication information to the first device, wherein the first indication information is used for indicating the first device to start monitoring the second device. For example, the distance between the second device and the first device is less than or equal to a first threshold or the second device is within the coverage of a network device serving the first device.

The first indication information is used to indicate the first device to start listening to the second device, and may be understood as: the first indication information is used for indicating the first device to monitor whether the system information forwarded by the second device exists.

In this embodiment, before the network device sends the first system information, the network device may configure whether the relay device needs to adopt a mode of monitoring first and then forwarding when forwarding the system information of the serving cell.

Specifically, when the number of the relay devices in the serving cell is greater than the configured threshold, the network device may configure the relay device to start monitoring before forwarding to forward the system information, that is, the first indication information is used to indicate the first device to start monitoring the second device, so that the repeated sending of the system information by the first device may be reduced, and a signaling storm is avoided. When the number of the relay devices in the serving cell is less than or equal to the configured threshold, the network device may configure the relay device to turn off the function of monitoring first and then forwarding the system information, that is, the first indication information is used to indicate that the first device does not turn on the monitoring second device.

In the embodiment of the application, the network device can flexibly turn on or turn off the function of forwarding the system information after the relay device monitors according to the number of the relay devices in the serving cell, so that the utilization rate of system resources is improved.

And S420, after receiving the first indication information and the first system information from the network device, the first device monitors whether the system information forwarded by the second device exists.

Optionally, the first indication information may also be used to indicate a listening duration.

In some scenarios, the Remote UE may have a strict delay requirement on the system information, and therefore the network device may configure the listening time for the first device to listen to the second device, so as to ensure that the requirement of the Remote UE can be met.

Optionally, the monitoring whether there is system information forwarded by the second device includes: and monitoring whether the system information forwarded by the second equipment exists in the monitoring duration.

Specifically, after receiving the first indication information and the first system information, if the first device starts monitoring the second device, the first device monitors the second device within a monitoring duration to meet a requirement of Remote UE and reduce power consumption of the first device.

The monitoring duration may be a random duration t, te (0, X), where X represents a preset time, and X may be specified by a standard or configured by the network device.

In one possible implementation, the method further includes: the first device receives second indication information sent by the network device, where the second indication information is used to indicate that the first device does not monitor system information forwarded by the second device, and the first Relay forwards the first system information.

Specifically, when the number of devices in the serving cell is less than or equal to the configured threshold, the network device sends the first indication information to instruct the first device to stop listening to the second device. Therefore, when the first device receives the first system information, the first device directly forwards the first system information without adopting a mode of monitoring first and then forwarding.

Illustratively, the network device may send the first indication information and/or the second indication information to the first device, where the first indication information and/or the second indication information are carried in configuration information or other information (e.g., newly defined information, or higher layer signaling, etc.).

S430, if the first device does not monitor the system information forwarded by the second device, the first device forwards the first system information.

The specific implementation manner of S420-S430 may refer to the specific implementation manner of fig. 3, which is not described herein again.

It can be seen that in the method for sending system information by a device according to the embodiment of the present application, a first device determines whether to start monitoring a second device according to first indication information of a network device, so that the first device can forward system information in different ways according to a scene, thereby improving a utilization rate of system resources; and when the first device starts monitoring the second device, whether the second device around forwards the system information is monitored before forwarding the system information, and when the second device does not forward the system information, the first device forwards the system information again, which is beneficial to reducing the possibility that different devices repeatedly broadcast the system information, thereby effectively reducing the system congestion and the system resource waste.

The above description has mainly described the solution of the embodiments of the present application from the perspective of the method side. It is to be understood that the relay user equipment includes hardware structures and/or software modules for performing the above functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the present application may perform the division of the functional units on the relay user equipment according to the above method example. For example, each functional unit may be divided for each function, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module. It should be noted that the division of the units in the embodiment of the present application is illustrative, and is only one division of the logic functions, and there may be another division in actual implementation.

Referring to fig. 5, fig. 5 is a block diagram illustrating functional units of an apparatus for sending system information according to an embodiment of the present disclosure. As shown in fig. 5, the apparatus 500 is applied to the first device, and the apparatus 500 includes: a processing unit 510 and a transceiving unit 520, wherein,

the processing unit 510 is configured to monitor whether there is system information forwarded by a second device when there is first system information to be forwarded, where a distance between the second device and the apparatus 500 is smaller than or equal to a first threshold, or the second device is located in a coverage area of a network device serving the apparatus 500;

the transceiver 520 is configured to forward the first system information if the processing unit 510 does not monitor the system information forwarded by the second device.

Optionally, the transceiver unit 520 is further configured to: receiving first indication information sent by the network device, where the first indication information is used to instruct the processing unit 510 to monitor system information forwarded by the second device.

Optionally, the first indication information is further used to indicate a monitoring duration;

in the aspect that the apparatus 500 monitors whether there is system information forwarded by a second device when there is first system information to be forwarded, the processing unit 510 is specifically configured to: and when the first system information to be forwarded is needed, monitoring whether the system information forwarded by the second equipment exists in the monitoring duration.

Optionally, the transceiver unit 520 is further configured to: receiving second indication information sent by the network device, where the second indication information is used to instruct the processing unit 510 not to monitor system information forwarded by the second device; and forwarding the first system information.

Optionally, the processing unit 510 is further configured to: if system information forwarded by second equipment is monitored, a first cell identifier is obtained, wherein the first cell identifier is a cell identifier of a cell to which the second system information belongs;

the transceiver unit 520 is further configured to: and if the first cell identification is different from the second cell identification, forwarding the first system information, wherein the second cell identification is the cell identification of the cell to which the first system information belongs.

Optionally, the processing unit 510 is further configured to: when the first cell identifier is the same as the second cell identifier, judging whether the system information forwarded by the second device is the same as the first system information;

the transceiver unit 520 is further configured to: and if the second system information is different from the first system information, forwarding part or all of the first system information.

Optionally, the processing unit 510 is further configured to: if the system information forwarded by the second device is partially or completely the same as the first system information, judging whether a first signal quality is lower than a first threshold, wherein the first signal quality is the signal quality when the second device forwards the system information forwarded by the second device;

the transceiver unit 520 is further configured to: and if the first signal quality is lower than the first threshold, forwarding the first system information.

Optionally, when there is the first system information to be sent, the processing unit 510 monitors whether there is system information forwarded by the second device, and the processing unit 510 is further configured to: and monitoring whether system information forwarded by the second equipment exists or not when first system information to be sent exists and the first system information comprises necessary system information.

It can be understood that the functions of each program module of the apparatus for sending system information according to the embodiment of the present application may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may refer to the related description of the foregoing method embodiment, which is not described herein again.

It should be appreciated that the apparatus 500 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an optional example, it may be understood by those skilled in the art that the apparatus 500 may be specifically a first device in the foregoing embodiment, and the apparatus 500 may be configured to perform each procedure and/or step corresponding to the first device in the foregoing method embodiment, and in order to avoid repetition, details are not described here again.

The apparatus 500 of each of the above aspects has functions of implementing corresponding steps executed by the first device in the above method; the functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software comprises one or more modules corresponding to the functions; for example, the processing unit 510 may be replaced by a processor, the transceiver unit 520 may be replaced by a transmitter and a receiver, and the transceiving operations and the related processing operations in the various method embodiments are performed respectively.

In the embodiment of the present application, the apparatus 500 in fig. 5 may also be a chip, a chip module, a UE, or a chip system, for example: system on chip (SoC). Correspondingly, the transceiver unit may be a transceiver circuit of the chip, and is not limited herein.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, where the electronic device includes: one or more processors, one or more memories, one or more communication interfaces, and one or more programs; the one or more programs are stored in the memory and configured to be executed by the one or more processors.

The program includes instructions for performing the steps of:

when first system information to be forwarded exists, monitoring whether the system information forwarded by second equipment exists, wherein the distance between the second equipment and the electronic equipment is smaller than or equal to a first threshold value, or the second equipment is located in the coverage range of network equipment serving the electronic equipment;

and if the electronic equipment does not monitor the system information forwarded by the second equipment, forwarding the first system information.

All relevant contents of each scene related to the method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

It will be appreciated that the memory described above may include both read-only memory and random access memory, and provides instructions and data to the processor. The portion of memory may also include non-volatile random access memory. For example, the memory may also store device type information.

In the embodiment of the present application, the processor of the above apparatus may be a Central Processing Unit (CPU), and the processor may also be other general processors, Digital Signal Processors (DSP), Application Specific Integrated Circuits (ASIC), Field Programmable Gate Arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It is to be understood that reference to "at least one" in the embodiments of the present application means one or more, and "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects. For example, the first information and the second information are different information only for distinguishing them from each other, and do not indicate a difference in the contents, priority, transmission order, importance, or the like of the two kinds of information.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software elements in a processor. The software elements may be located in ram, flash, rom, prom, or eprom, registers, among other storage media that are well known in the art. The storage medium is located in a memory, and a processor executes instructions in the memory, in combination with hardware thereof, to perform the steps of the above-described method. To avoid repetition, it is not described in detail here.

The embodiment of the present application further provides a network device, where the network device is configured to support the first device to implement part or all of the steps of any one of the methods described in the foregoing method embodiments.

The embodiment of the present application further provides a chip, where the chip is configured to monitor whether there is system information forwarded by a second device when first system information to be forwarded is detected, where a distance between the second device and a device where the chip is located is smaller than or equal to a first threshold, or the second device is located within a coverage area of a network device serving the device where the chip is located; the chip is further configured to forward the first system information when the system information forwarded by the second device is not monitored.

The embodiment of the present application further provides a chip module, which includes a transceiver module and a chip, wherein,

the chip is used for monitoring whether system information forwarded by second equipment exists or not when first system information to be forwarded is obtained, wherein the distance between the second equipment and the equipment where the chip module is located is smaller than or equal to a first threshold value, or the second equipment is located in the coverage range of network equipment serving the equipment where the chip module is located; and the transceiver component is used for forwarding the first system information when the chip does not monitor the system information forwarded by the second device.

Embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the methods as described in the above method embodiments.

Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any one of the methods as set out in the above method embodiments. The computer program product may be a software installation package.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially or partially contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, or a TRP, etc.) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Those skilled in the art will appreciate that all or part of the steps of the methods of the above embodiments may be implemented by a program, which is stored in a computer-readable memory, the memory including: flash disk, ROM, RAM, magnetic or optical disk, and the like.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A method for transmitting system information, the method comprising:

2. The method of claim 1, further comprising:

the first device receives first indication information sent by the network device, where the first indication information is used to indicate that the first device monitors system information forwarded by the second device.

3. The method of claim 2, wherein the first indication information is further used for indicating a listening duration;

when the first device has the first system information to be forwarded, monitoring whether the system information forwarded by the second device exists, including:

when the first system information to be forwarded is received, the first device monitors whether the system information forwarded by the second device exists in the monitoring duration.

4. A method according to claim 2 or 3, characterized in that the method further comprises:

the first device receives second indication information sent by the network device, where the second indication information is used to indicate that the first device does not monitor system information forwarded by the second device, and the first device forwards the first system information.

5. The method according to any one of claims 1-4, further comprising:

if the first device monitors system information forwarded by the second device, the first device acquires a first cell identifier, wherein the first cell identifier is a cell identifier of a cell to which the system information forwarded by the second device belongs;

and if the first cell identifier is different from a second cell identifier, the first device forwards the first system information, wherein the second cell identifier is the cell identifier of the cell to which the first system information belongs.

6. The method of claim 5, further comprising:

when the first cell identifier is the same as the second cell identifier, the first device determines whether the system information forwarded by the second device is the same as the first system information;

and if the system information forwarded by the second equipment is different from the first system information, the first equipment forwards part or all of the first system information.

7. The method of claim 6, further comprising:

if the system information forwarded by the second device is partially or completely the same as the first system information, judging whether a first signal quality is lower than a first threshold, wherein the first signal quality is the signal quality when the second device forwards the system information forwarded by the second device;

and if the first signal quality is lower than the first threshold, the first equipment forwards the first system information.

8. The method according to any one of claims 1 to 7, wherein the monitoring whether there is system information forwarded by the second device when there is first system information to be sent by the first device comprises:

and when the first system information to be sent exists and the first system information comprises necessary system information, the first equipment monitors whether the system information forwarded by the second equipment exists.

9. An apparatus for transmitting system information, the apparatus comprising:

and the receiving unit is used for forwarding the first system information when the processing unit does not monitor the system information forwarded by the second device.

10. The apparatus of claim 9, wherein the apparatus is a chip, or a chip module, or a User Equipment (UE).

11. A network device, wherein the network device is configured to support a first device to implement the method of any one of claims 1-8.

12. A chip, wherein the chip is configured to monitor whether there is system information forwarded by a second device when there is first system information to be sent, where a distance between the second device and a device where the chip is located is less than or equal to a first threshold, or the second device is located within a coverage area of a network device serving the device where the chip is located;

13. A chip module is characterized in that the chip module comprises a transceiver component and a chip,

the chip is used for monitoring whether system information forwarded by second equipment exists or not when first system information to be sent exists, wherein the distance between the second equipment and the equipment where the chip module is located is smaller than or equal to a first threshold value, or the second equipment is located within the coverage range of network equipment serving the equipment where the chip module is located;

14. An electronic device, comprising a processor, memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-8.

15. A computer-readable storage medium, in which a computer program is stored, wherein the method according to any of claims 1-8 is performed when the computer program is run on an electronic device.