CN115550892B

CN115550892B - Method and device for synchronizing system information

Info

Publication number: CN115550892B
Application number: CN202210324499.6A
Authority: CN
Inventors: 韦武朝; 熊正
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2023-10-20
Anticipated expiration: 2042-03-30
Also published as: CN115550892A

Abstract

The application relates to the field of terminals, and provides a method and a device for synchronizing system information, wherein the method comprises the following steps: the method comprises the steps that a first terminal device obtains a system information set of a resident cell of the first terminal device; the method comprises the steps that a first terminal device and a second terminal device establish short-distance wireless communication connection; when the system information set meets the residence requirement of the second terminal equipment, the first terminal equipment sends the system information set to the second terminal equipment through short-distance wireless communication connection. The method can improve the network access rate of the wearable equipment.

Description

Method and device for synchronizing system information

Technical Field

The application relates to the field of terminals, in particular to a method and a device for synchronizing system information.

Background

The wearable device is a portable electronic device capable of being directly worn on a body, and because of the portability, the size of the wearable device is usually smaller, so that the endurance capacity of the wearable device is limited, and in order to reduce the power consumption, the wearable device is usually connected with a base station by means of the communication function of a terminal device such as a mobile phone.

When the communication connection between the wearable device and the mobile phone is disconnected, the wearable device needs to establish a direct communication connection with the base station to realize a communication function. Before the wearable device establishes communication connection with the base station, the steps of searching the network, acquiring system information (system information) and the like need to be carried out for a long time, so that the network of the wearable device is blocked. How to increase the networking rate of wearable devices is a problem that currently needs to be solved.

Disclosure of Invention

The embodiment of the application provides a method, a device, a computer readable storage medium and a computer program product for synchronizing system information, which can improve the network access rate of wearable equipment and are the problems to be solved at present.

In a first aspect, a method for synchronizing system information is provided, including: the method comprises the steps that a first terminal device obtains a system information set of a resident cell of the first terminal device; the method comprises the steps that a first terminal device and a second terminal device establish short-distance wireless communication connection; when the system information set meets the residence requirement of the second terminal equipment, the first terminal equipment sends the system information set to the second terminal equipment through short-distance wireless communication connection.

The first terminal equipment is terminal equipment with strong communication capability or cruising capability such as a mobile phone, and the second terminal equipment is terminal equipment with weak communication capability or cruising capability such as a wearable equipment. After the residence of the cell is successful, the first terminal equipment can acquire a system information set of the cell, and the system information set is also information required by the second terminal equipment to reside in the cell, so when the system information set meets the residence requirement of the second terminal equipment, the first terminal equipment can send the system information set to the second terminal equipment through short-distance wireless communication connection, and when the short-distance wireless communication connection is disconnected, the second terminal equipment can directly establish communication connection with a base station or other network equipment by using the system information set, and operations such as cell downlink synchronization, physical broadcast channel analysis, downlink system information block analysis, uplink synchronization and the like are not required, thereby improving the rate of the second terminal equipment accessing the network and reducing network blocking.

In an alternative implementation, the first terminal device sends the system information set to the second terminal device through a short-range wireless communication connection, including: when the first terminal device is in a stable state, the first terminal device transmits a system information set to the second terminal device through a short-range wireless communication connection.

When the first terminal device is in an unstable state (e.g., a high-speed moving state), the residence cell of the first terminal device will change in a short time, and the system information set received by the second terminal device will fail in a short time, so that the meaning of sending the system information set to the second terminal device when the first terminal device is in an unstable state is not great, but the energy consumption of the two is increased. In this embodiment, the first terminal device sends the system information set to the second terminal device in a stable state, so that power consumption of the first terminal device and the second terminal device can be saved.

In an alternative implementation, the steady state includes: a state in which the moving speed is lower than the speed threshold.

In an alternative implementation, the first terminal device sends the system information set to the second terminal device through a short-range wireless communication connection, including: the first terminal device sends a first synchronization frame to the second terminal device through a short-range wireless communication connection, a system information set is borne in a load field of the first synchronization frame, the first synchronization frame further comprises at least one of a frame function identifier, a sequence number, a system information identifier and frame length information, the frame function identifier is used for indicating the function of the first synchronization frame, the sequence number is used for indicating the sequence of the first synchronization frame in the frame set, the system information identifier is used for indicating the type of the system information borne by the first synchronization frame, and the frame length information is used for indicating the data quantity of the first synchronization frame.

In an alternative implementation, the method further includes: the first terminal equipment receives a response frame from the second terminal equipment through short-range wireless communication connection, wherein the response frame is used for indicating whether the system information set is successfully received; when the first terminal device does not receive the response frame, or when the response frame indicates that the system information set fails to be received, the first terminal device retransmits the system information set to the second terminal device through the short-range wireless communication connection.

The embodiment can improve the transmission success rate of the system information set.

In an alternative implementation, the retransmission of the system information set by the first terminal device to the second terminal device through the short-range wireless communication connection includes: and when the retransmission times of the system information set are smaller than or equal to the times threshold value, the first terminal equipment retransmits the system information set to the second terminal equipment through the short-distance wireless communication connection.

In some cases, the short-range wireless communication connection may fail, and at this time, the retransmission is meaningless, so when the number of retransmissions is smaller than the number threshold, the first terminal device may consider that the short-range wireless communication connection has a possibility of successful transmission, and may continue retransmission; when the number of retransmissions is greater than or equal to the number threshold, the first terminal device may consider that the short-range wireless communication connection is no longer possible for successful transmission, and may stop the retransmission. The embodiment improves the transmission success rate of the system information set while avoiding meaningless retransmission.

In an alternative implementation, when the first synchronization frame includes a frame function identification, a sequence number, and a system information identification, the reply frame includes a frame function identification, a sequence number, and a system information identification.

The response frame contains the frame function identifier, the serial number and the system information identifier, so that the first terminal equipment can determine which system information is successfully transmitted and which system information is failed to be transmitted, and the successful system information is not required to be retransmitted, thereby reducing the power consumption of retransmitting the system information.

In an alternative implementation, when the frame set includes a plurality of synchronization frames, the reply frame includes only a sequence number of a last synchronization frame of the plurality of synchronization frames; alternatively, the reply frame includes a sequence number of a last one of the plurality of synchronization frames and a sequence number of at least one of the plurality of synchronization frames that was not successfully received.

The first terminal device may determine whether the second terminal device successfully receives the plurality of synchronization frames according to the sequence number in the response frame, for example, when the response frame only includes the sequence number of the last synchronization frame in the plurality of synchronization frames, the first terminal device may determine that the second terminal device successfully receives the plurality of synchronization frames; when the response frame only contains the sequence number of the last synchronization frame in the plurality of synchronization frames, the first terminal device can determine that the second terminal device does not receive the last synchronization frame; when the response frame includes the sequence number of the last synchronization frame and the sequence number of the other synchronization frame in the plurality of synchronization frames, the first terminal device may determine that the second terminal device does not receive the other synchronization frame. Thus, the second terminal equipment can complete feedback of the receiving condition of the synchronous frame without sending all the sequence numbers of the response frames, thereby reducing the power consumption of the receiving condition of the feedback synchronous frame.

In an alternative implementation, the system information set is the smallest system information set that meets the residence requirements of the second terminal device.

The first terminal equipment can send the minimum system information set to the second terminal equipment after acquiring the minimum system information set, and the second terminal equipment does not need to wait for acquiring the full system information set and then send the full system information set, so that the second terminal equipment can quickly acquire the capacity of accessing the cell, and if the short-distance wireless communication is suddenly interrupted, the first terminal equipment can not send the full system information set, and the second terminal equipment can also quickly access the cell.

In an alternative implementation, the method further includes: when the first terminal equipment acquires the full-volume system information set of the resident cell, the first terminal equipment transmits the full-volume system information set to the second terminal equipment through short-distance wireless communication connection.

In this embodiment, the second terminal device does not need to acquire the full system information set from the base station, so that the rate of accessing the second terminal device into the cell is improved, and the power consumption of the second terminal device is reduced.

In an alternative implementation, the method further includes: the first terminal equipment updates a system information set; when the updating of the system information set is completed, the first terminal device sends the updated system information set to the second terminal device through the short-distance wireless communication connection.

The first terminal equipment may switch the resident cell, correspondingly, the system information set is updated, the first terminal equipment sends the updated system information set to the second terminal equipment, network access failure of the second terminal equipment caused by expiration of the system information set can be avoided, and therefore the rate of accessing the second terminal equipment into the cell is improved.

In a second aspect, there is provided another method of synchronizing system information, comprising: the second terminal equipment establishes short-distance wireless communication connection with the first terminal equipment; the second terminal device receives a set of system information from the first terminal device over the short range wireless communication connection, the set of system information being used to determine a camping cell of the second terminal device.

The first terminal equipment is terminal equipment with strong communication capability or cruising capability such as a mobile phone, and the second terminal equipment is terminal equipment with weak communication capability or cruising capability such as a wearable equipment. After the cell residence succeeds, the first terminal equipment can acquire a system information set of the cell, and the system information set is also information required by the second terminal equipment to reside in the cell, so that the first terminal equipment can send the system information set to the second terminal equipment through short-distance wireless communication connection, and after the short-distance wireless communication connection is disconnected, the second terminal equipment can directly establish communication connection with a base station or other network equipment by using the system information set, and operations such as cell downlink synchronization, physical broadcast channel analysis, downlink system information block analysis, uplink synchronization and the like are not required, thereby improving the rate of the second terminal equipment accessing the network and reducing network blocking.

In an alternative implementation, the second terminal device receives the system information set from the first terminal device through a short range wireless communication connection, including: the second terminal device receives the first synchronization frame from the first terminal device through a short-range wireless communication connection, the system information set is carried in a load field of the first synchronization frame, the first synchronization frame further comprises at least one of a frame function identifier, a sequence number, a system information identifier and frame length information, the frame function identifier is used for indicating the function of the first synchronization frame, the sequence number is used for indicating the sequence of the first synchronization frame in the frame set, the system information identifier is used for indicating the type of the system information carried by the first synchronization frame, and the frame length information is used for indicating the data quantity of the first synchronization frame.

In an alternative implementation, the method further includes: the second terminal equipment sends a response frame to the first terminal equipment through short-range wireless communication connection, wherein the response frame is used for indicating whether the system information set is successfully received or not; when the response frame indicates that the system information set fails to be received, the second terminal device receives retransmission data of the system information set from the first terminal device through the short-range wireless communication connection.

In an alternative implementation, the second terminal device receives retransmission data of the system information set from the first terminal device through a short-range wireless communication connection, including: and when the retransmission times of the system information set are smaller than or equal to the times threshold value, the second terminal equipment receives retransmission data of the system information set from the first terminal equipment through the short-distance wireless communication connection.

In some cases, the short-range wireless communication connection may fail, and at this time, the retransmission loses meaning, so when the number of retransmissions is smaller than the number threshold, the second terminal device may consider that the short-range wireless communication connection has a possibility of successful transmission, and may continue to receive the retransmission data; when the number of retransmissions is greater than or equal to the number threshold, the second terminal device may consider that the short-range wireless communication connection is no longer possible for successful transmission, and may stop receiving retransmission data. The embodiment improves the transmission success rate of the system information set while avoiding meaningless retransmission.

In an alternative implementation, the method further includes: when the short-distance wireless communication connection does not meet the transmission requirement, and when the communication parameters corresponding to the system information set meet the requirement of the second terminal equipment, the second terminal equipment searches the resident cell by using the system information set; when the short-distance wireless communication connection does not meet the transmission requirement, and when the communication parameters corresponding to the system information set do not meet the requirement of the second terminal equipment, the second terminal equipment searches the resident cell by using a preset search strategy.

When the short-distance wireless communication connection does not meet the transmission requirement, the second terminal equipment needs to establish direct connection with the base station, wherein when the communication parameters corresponding to the system information set meet the requirement of the second terminal equipment, the second terminal equipment can search the resident cell by using the system information set preferentially, so that full-frequency network searching is not needed, and the electric quantity and network access time can be saved; when the communication parameters corresponding to the system information set do not meet the requirements of the second terminal equipment, the second terminal equipment searches the resident cell by utilizing a preset search strategy, and the probability of communication failure is reduced.

In an alternative implementation, the method further includes: and when the second terminal equipment fails to search the resident cell by using the system information, the second terminal equipment searches the resident cell by using a preset searching strategy.

When the communication parameters corresponding to the system information set meet the requirements of the second terminal equipment, the second terminal equipment may also fail to reside (for example, the second terminal equipment leaves the cell corresponding to the system information), and at this time, the second terminal equipment can preset a search strategy to search for the residing cell, thereby reducing the probability of communication failure.

In an alternative implementation, the preset search strategy includes: and searching the cells according to the sequence of the historical cells, the historical frequency points, the designated frequency points, the preferred frequency band and the full frequency band.

The historical cell is the most likely cell to reside successfully, the historical frequency points are the next, in this embodiment, the search order is ordered according to the probability of successful residence, when the second terminal device searches according to the order of the historical cell, the historical frequency points, the designated frequency points and the preferred frequency band, and then performs full-band search, thereby improving the network access rate and reducing the probability of communication failure.

In an alternative implementation, the method further includes: the second terminal device receives the full set of system information from the first terminal device over the short range wireless communication connection.

In this embodiment, the second terminal device does not need to acquire the full system information set from the base station, thereby improving the rate of accessing the second terminal device into the cell.

In a third aspect, there is provided an apparatus for synchronizing system information, comprising means for performing any one of the methods of the first or second aspects. The device can be a terminal device or a chip in the terminal device. The apparatus may include a processing unit.

When the apparatus is a terminal device, the processing unit may be a processor; the terminal device may further comprise a memory for storing computer program code which, when executed by the processor, causes the terminal device to perform any of the methods of the first or second aspects.

When the apparatus is a chip in a terminal device, the processing unit may be a logic processing unit inside the chip; the chip may also include memory, which may be memory within the chip (e.g., registers, caches, etc.), or memory external to the chip (e.g., read-only memory, random access memory, etc.); the memory is for storing computer program code which, when executed by the processor, causes the chip to perform any one of the methods of the first or second aspects.

In a fourth aspect, there is provided a computer readable storage medium storing computer program code which, when run by an apparatus for synchronizing system information, causes the apparatus to perform any one of the methods of the first or second aspects.

In a fifth aspect, there is provided a computer program product comprising: computer program code which, when run by an apparatus for synchronizing system information, causes the apparatus to perform any one of the methods of the first or second aspects.

Drawings

FIG. 1 is a schematic illustration of an application scenario suitable for use with the present application;

FIG. 2 is a schematic diagram of a method for synchronizing system information according to the present application;

fig. 3 is a schematic diagram of a method for retransmitting system information according to the present application;

FIG. 4 is a schematic diagram of a format of a synchronization frame provided by the present application;

FIG. 5 is a schematic diagram of a format of a reply frame provided by the present application;

FIG. 6 is a schematic diagram of another method for synchronizing system information provided by the present application;

fig. 7 is a schematic diagram of a method for accessing a cell by a wristwatch according to the present application;

FIG. 8 is a schematic diagram of an apparatus for synchronizing system information according to the present application;

FIG. 9 is a schematic diagram of an apparatus for synchronizing system information provided by the present application;

fig. 10 is a schematic diagram of another apparatus for synchronizing system information according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an application scenario suitable for use in the present application.

The mobile phone 110 and the watch 120 can communicate through a short-range wireless communication connection, which may be bluetooth (blue), wireless local area network (wireless local area network, WLAN), infrared transmission, ultra Wideband (UWB), zigBee (ZigBee), ad hoc network (ad hoc), radio frequency identification (radio frequency identification, RFID), or near field communication (near field communication, NFC), and the specific type of the short-range wireless communication connection is not limited by the present application.

Communication between handset 110 and base station 130 may be via a cellular network, which may be a second generation (2 ^th generation, 2G) mobile communication network, third generation (3 ^th generation, 3G) mobile communication network, fourth generation (4 ^th generation, 4G) mobile communication network or fifth generation (5) ^th generation, 5G) mobile communication network, but may be other types of networks, the present application does not limit the communication manner between the mobile phone 110 and the base station 130.

The communication between the watch 120 and the base station 130 may also be performed through a cellular network, where the cellular network may be a 2G mobile communication network, a 3G mobile communication network, a 4G mobile communication network, or a 5G mobile communication network, or may be other types of networks, and the communication manner between the watch 120 and the base station 130 is not limited in the present application.

It should be noted that, the communication network including the mobile phone 110, the watch 120, and the base station 130 is exemplary, for example, the mobile phone 110 may also be a terminal device such as a tablet computer, a vehicle-mounted electronic device, and the watch 120 may also be a wearable device such as smart glasses.

The wearable device is a portable electronic device capable of being directly worn on the body, and due to the portability, the size of the wearable device is usually small, so that the cruising ability of the wearable device is limited. In order to reduce power consumption, the wearable device is usually connected to a base station by means of a communication function of a terminal device such as a mobile phone.

For example, the watch 120 may communicate with the mobile phone 110 via a bluetooth connection and with the base station 130 via the mobile phone 110, and by virtue of this communication, the amount of power of the watch 120 may be saved, since bluetooth consumes less power than a cellular network.

When the bluetooth connection between the wristwatch 120 and the mobile phone 110 is disconnected, the wristwatch 120 needs to establish a direct communication connection with the base station 130 to realize the communication function. Before the wearable device establishes communication connection with the base station, the steps of searching the network, acquiring system information (system information) and the like need to be carried out for a long time, so that the network of the wearable device is blocked.

The method for synchronizing system information provided by the present application is described below.

As shown in fig. 2, the method includes the following.

S210, the mobile phone 110 receives the system information set from the base station 130.

After searching a cell and acquiring downlink synchronization, the mobile phone 110 may obtain information such as a physical layer cell identifier (physical layer cell identifier, PCI) of the cell and Timing Advance (TA) of a system frame, and then the mobile phone 110 may acquire a system information set of the cell, where the system information set is used to indicate configuration of the cell, so that the mobile phone 110 can work correctly in the cell after accessing the cell. Wherein the set of system information includes one or more pieces of system information.

The system information is cell-level information, i.e., all terminal devices accessing the cell are in effect. The system information may be divided into a master information block (master information block, MIB) and a system information block (system information block, SIB), each system information comprising a set of parameters related to a certain function, e.g., MIB typically comprises some important parameters through which a terminal device needs to acquire SIB, SIB1 typically comprises parameters for determining whether a cell is suitable for camping, and time domain scheduling information of other SIBs.

Table 1 shows the system information sets for several cellular networks.

TABLE 1

The minimum system information set is a set of parameters that meet the basic communication requirements. It should be noted that, table 1 is an exemplary illustration, and the minimum system information set total system information set may also be other configurations, for example, some base stations deployed by operators do not include SIB9, and then the total system information set does not include SIB9.

S220, the mobile phone 110 establishes a short-range wireless communication connection with the wristwatch 120.

The procedure for establishing a short-range wireless communication connection will be briefly described below by taking a bluetooth connection as an example.

The handset 110 and the watch 120 may first establish a physical layer channel through the steps of creating a connection (create connection), requesting a connection (connection request), and setting up completion (setup complete). The physical layer channels, which may also be referred to as physical links, are concepts in the baseband protocol, including asynchronous links (asynchronous connectionless, ACL) and synchronous links (synchronous connection oriented, SCO), where ACL may be used for data with lower latency requirements, such as packet data; SCO can be used for data with high transmission delay requirements, such as voice data.

After the physical layer channel is established, the handset 110 and the watch 120 need to establish a logical link control and adaptation protocol (logical link control and adaption protocol, L2 CAP) connection so that the application layer of the handset 110 and the application layer of the watch 120 can communicate. The L2CAP connection belongs to a logical channel, and an endpoint of the logical channel may be represented by a channel identifier (channel identifier, CID), and each application (profile) instance of the bluetooth device needs to acquire the CID to establish a connection of the application layer.

Optionally, after the physical layer channel is established, the handset 110 may also perform an authentication step with the watch 120 to generate a session key. The session key may be stored in a secure storage environment of the handset 110 or the watch 120, such as a Secure Element (SE), a trusted execution environment (trusted execution environment, TEE), or a secure white box.

It should be noted that, the mobile phone 110 may first establish a short-distance wireless communication connection, and then acquire a system information set; or the system information set can be acquired first, and then the short-distance wireless communication connection is established. The present application does not limit the order in which S210 and S220 are executed by the mobile phone 110.

S230, when the system information set meets the residence requirement of the second terminal device, the mobile phone 110 sends the system information set to the watch 120 through the short-range wireless communication connection.

The mobile 110 may perform S230 after successful camping (including successful network search camping, successful cell reselection camping, or successful cell handover camping).

The resident requirement is a preset rule, for example, the resident requirement may be set to include the minimum system information set in the system information set, or the resident requirement may be set to include the total system information set in the system information set.

When the residence requirement is set to be that the system information set contains the minimum system information set, the mobile phone 110 can send the minimum system information set to the watch 120 after acquiring the minimum system information set, and the watch 120 does not need to wait for acquiring the full system information set and then send the full system information set, so that the watch 120 can quickly acquire the capability of accessing the cell, and if the short-distance wireless communication connection is suddenly interrupted, the mobile phone 110 can not send the full system information set, and the watch 120 can also quickly access the cell.

Optionally, when the mobile phone 110 acquires the full system information set of the camping cell, the mobile phone 110 sends the full system information set to the watch 120 through the short-range wireless communication connection. In this way, the watch 120 does not need to acquire the full system information set from the base station 130, further improving the rate of access of the watch 120 to the cell, and reducing the power consumption of the watch 120.

Optionally, when S230 is executed, the mobile phone 110 needs to determine whether the mobile phone 110 is currently in a stable state, and when the mobile phone 110 is in a stable state, the system information set is sent to the watch 120 through the short-range wireless communication connection.

The above-mentioned stable state refers to a network stable state, for example, when the mobile phone 110 is located on a high-speed rail, the mobile phone 110 is in a high-speed moving state, and the residence cell of the mobile phone 110 may change in a short time, at this time, when the mobile phone 110 is in an unstable state, if the mobile phone 110 sends the current system information set to the watch 120, the system information set may fail in a short time, so when the mobile phone 110 is in an unstable state, the meaning of sending the system information set to the watch 120 is not great, but the energy consumption of the two is increased. In this embodiment, the mobile phone 110 sends the system information set to the watch 120 in a stable state (e.g., stationary, running, etc.), so that the power consumption of the first terminal device and the second terminal device can be saved.

The mobile phone 110 may determine whether the mobile phone 110 is currently in a stable state through a sensor or a positioning signal, for example, if the mobile phone 110 determines that the user is in a running scene through an acceleration sensor, the mobile phone 110 may determine that the mobile phone is currently in a stable state; if the mobile phone 110 determines that the position of the user changes in a short time through the satellite positioning signal, but the moving speed is less than the speed threshold, the mobile phone 110 determines that the user is in a stable state. The mobile phone 110 may also determine whether the mobile phone 110 is currently in a steady state through some specific information (such as high-speed railway ticket information), and the specific manner of determining whether the mobile phone 110 is currently in a steady state is not limited in the present application.

In an alternative implementation, the first terminal device may switch the camping cell, and correspondingly, the system information set may also be updated, and when the updating of the system information set is completed, the mobile phone 110 sends the updated system information set to the watch 120 through the short-range wireless communication connection, so that the network access failure of the watch 120 caused by the expiration of the system information set is avoided.

An example of the handset 110 transmitting a set of system information to the watch 120 over a short range wireless communication connection is described below in connection with fig. 3.

S310, the mobile phone 110 sends the sync frame 1 to the watch 120.

S320, the mobile phone 110 sends the sync frame 2 to the watch 120.

In some cases, the system information set contains more information, and the mobile phone 110 may send multiple synchronization frames, such as synchronization frame 1 and synchronization frame 2, and the mobile phone 110 may also send more synchronization frames. When the system information set contains less information, the handset 110 may send one sync frame, e.g., the handset 110 may send only sync frame 1.

Taking sync frame 1 as an example, the format of sync frame 1 is shown in fig. 4. Wherein the Identifier (ID) is a frame function identifier field for indicating that the function of the synchronization frame 1 is a synchronization system information set. A Sequence Number (SN) is used to indicate the order of the synchronization frame 1 in the frame set, for example, SN of the synchronization frame 1 is 1, and is used to indicate that the synchronization frame 1 is the first synchronization frame in the frame set (the set of synchronization frames 1 and 2). The SIBs are system information identifiers for indicating the type of system information carried by the synchronization frame 1, and for example, when the system information carried by the synchronization frame 1 is SIB1, the SIBs field may be set to 00001. The Length (LEN) is frame length information for indicating the data amount of the sync frame 1. The payload (payload) is a field that carries system information. The SN, SIBs, and LEN may all be in Tag Length Value (TLV) format.

After the watch 120 receives the synchronization frame, it may feed back the reception of the synchronization frame.

S330, the wristwatch 120 transmits a response frame to the mobile phone 110 through the short-range wireless communication connection.

The response frame is used for indicating whether the system information set is successfully received, and when the mobile phone 110 does not receive the response frame or when the response frame indicates that the system information set is failed to be received, the mobile phone 110 retransmits the system information set to the watch 120 through the short-range wireless communication connection, so that the transmission success rate of the system information set is improved.

The format of the response frame is shown in fig. 5. Wherein the ID is a frame function identification field for indicating the function of the response frame. The SN is used to indicate the order of the sync frames corresponding to the acknowledgement frames in the frame set. The SIBs are used to indicate the type of system information corresponding to the response frame.

After receiving the response frame, the mobile phone 110 can determine which system information is successfully transmitted and which system information is failed to be transmitted according to the frame function identifier, the serial number and the system information identifier, and the system information which is successfully transmitted does not need to be retransmitted, so that the power consumption for retransmitting the system information is reduced.

When the frame set includes a plurality of synchronization frames, the response frame may include only a sequence number of a last synchronization frame among the plurality of synchronization frames; alternatively, the acknowledgement frame may include a sequence number of a last synchronization frame of the plurality of synchronization frames and a sequence number of at least one synchronization frame of the plurality of synchronization frames that was not successfully received.

For example, if watch 120 receives sync frame 1 and sync frame 2 successfully, then the reply frame may contain only the SN of sync frame 2 (i.e., the SN of the last sync frame in sync frame 1 and sync frame 2), indicating that all sync frames in the set of frames were received successfully; after receiving the response frame, the mobile phone 110 does not retransmit the synchronization frame 1 and the synchronization frame 2. When the reply frame contains only SN of the synchronization frame 1, the mobile phone 110 determines that the synchronization frame 1 is successfully received, and the synchronization frame 2 is failed to be received, and retransmits the synchronization frame 2.

For another example, the mobile phone 110 sends 3 synchronization frames, namely, a synchronization frame 1, a synchronization frame 2 and a synchronization frame 3, the watch 120 fails to receive the synchronization frame 1, and receives the synchronization frame 2 and the synchronization frame 3 successfully, the response frame may include SNs of the synchronization frame 1 and the synchronization frame 3, and the SN of the synchronization frame 1 is located in a reception failure field, and the SN of the synchronization frame 3 is located in a reception success field; the SN of the synchronization frame 3 indicates that the last synchronization frame received by the watch 120 is the synchronization frame 3, the SN of the synchronization frame 1 indicates that the synchronization frame 1 fails to be received, and the mobile phone 110 retransmits the synchronization frame 1 after receiving the response frame.

As can be seen from the above two examples, the wristwatch 120 can complete feedback of the reception situation of the synchronization frame without transmitting all the sequence numbers of the acknowledgement frames, thereby reducing the power consumption of the reception situation of the feedback synchronization frame.

S340, the mobile phone 110 sends the retransmitted synchronization frame to the watch 120 through the short-range wireless communication connection.

In an alternative implementation manner, before retransmitting the system information set, the mobile phone 110 determines the retransmission times of the system information set to be retransmitted, and when the retransmission times of the system information set are smaller than the times threshold, the mobile phone 110 retransmits the system information set to the watch 120 through a short-range wireless communication connection; when the number of retransmissions of the system information set is greater than or equal to the number threshold, the handset 110 does not retransmit the system information set.

Similarly, the watch 120 determines the number of retransmissions of the system information set before receiving the retransmitted system information set, and when the number of retransmissions of the system information set is less than the number threshold, the watch 120 receives the retransmitted system information set from the mobile phone 110 over the short range wireless communication connection; when the number of retransmissions of the system information set is greater than or equal to the number threshold, the watch 120 no longer receives the retransmitted system information set from the handset 110 over the short range wireless communication connection.

For example, if the threshold of the number of retransmissions is 5 and the current number of retransmissions of the synchronization frame 1 is 4, the mobile phone 110 may continue to retransmit the synchronization frame 1, and the watch 120 also continues to receive the synchronization frame 1; if the current retransmission number of the synchronization frame 1 is 5, the mobile phone 110 does not retransmit the synchronization frame 1, and the watch 120 does not receive the synchronization frame 1.

When the number of retransmissions is less than the number threshold, the handset 110 and the watch 120 may consider that the short-range wireless communication connection may still be successfully transmitted, and may continue retransmission; when the number of retransmissions is equal to or greater than the number threshold, the handset 110 and the watch 120 may consider that the transmission of the short-range wireless communication connection is unlikely to be successful, and may discard the retransmission; the embodiment improves the transmission success rate of the system information set while avoiding meaningless retransmission.

Fig. 6 shows a flow chart of a method of synchronizing between the handset 110 and the watch 120.

The mobile phone 110 and the watch 120 are firstly subjected to bluetooth pairing, and after the pairing is successful, the mobile phone 110 acquires a system information set.

Then, the mobile phone 110 determines whether the current scenario satisfies the synchronization scenario, that is, whether the system information set satisfies the residence requirement of the watch 120, for example, if the current system information set is a 5G system information set and the watch 120 does not support the 5G network, the mobile phone 110 determines that the system information set does not satisfy the residence requirement of the watch 120; if the current system information set is a 4G system information set and the watch 120 supports a 4G network, the mobile phone 110 determines that the system information set meets the residence requirement of the watch 120.

When the current scene does not satisfy the synchronous scene, the mobile phone 110 ends the flow. When the current scene satisfies the synchronization scene, the mobile phone 110 determines whether it is currently in a stable state.

If the mobile phone 110 is in an unstable state, the process ends, and the mobile phone 110 does not send the system information set to the watch 120; if the mobile phone 110 is in a stable state, the mobile phone 110 and the watch 120 synchronize the system information set, that is, the mobile phone 110 and the watch 120 perform the method shown in fig. 3.

It can be seen that, based on the method provided by the present application (e.g., the method shown in fig. 2 to 6), after the cell camping succeeds, the mobile phone 110 sends the system information set required by the wristwatch 120 to the wristwatch 120 through the short-range wireless communication connection, so that when the short-range wireless communication connection is disconnected, the wristwatch 120 can directly use the system information set to establish communication connection with the base station 130 or other network devices, without performing operations such as cell downlink synchronization (e.g., receiving the primary synchronization signal (primary synchronization signal, PSS) and the secondary synchronization signal (secondary synchronization signal, SSS)), analyzing the physical broadcast channel (physical broadcast channel, PBCH) (e.g., receiving the MIB), analyzing SIBs, uplink synchronization, and the like, thereby improving the rate of accessing the wristwatch 120 into the network, and reducing network blocking.

After the watch 120 acquires the system information set, if the short-range wireless communication connection functions normally, the watch 120 may continue to indirectly communicate with the base station 130 through the short-range wireless communication connection; if the short-range wireless communication connection is functionally abnormal, the wristwatch 120 can establish a connection with the base station 130 using the system information set, and directly communicate with the base station 130.

The method of accessing the base station 130 by the watch 120 is shown in fig. 7.

S710, the wristwatch 120 detects that the short-range wireless communication connection does not meet the transmission requirement.

For example, when the bluetooth connection is disconnected, the wristwatch 120 determines that the bluetooth connection does not meet the transmission requirements; when the received signal strength indication (received signal strength indicator, RSSI) of the bluetooth connection is less than the strength threshold, the watch 120 determines that the bluetooth connection does not meet the transmission requirements.

The wristwatch 120 can also determine whether the bluetooth connection meets the transmission requirement according to other manners (such as signal to noise ratio), and the specific manner of determining whether the bluetooth connection meets the transmission requirement by the wristwatch 120 is not limited by the present application.

S720, the watch 120 judges whether the communication parameters corresponding to the current system information set meet the requirements.

The communication parameters may be network type, frequency band or frequency point.

For example, if the network system corresponding to the current system information set is 4G and the watch 120 supports the 4G network, the watch 120 determines that the communication parameters corresponding to the current system information set meet the requirements.

For another example, if the frequency point corresponding to the current system information set is a frequency point that is not supported by the watch 120, the watch 120 determines that the communication parameters corresponding to the current system information set do not meet the requirements.

As can be seen from the above examples, when the communication parameters corresponding to the system information set meet the requirements of the watch 120, the watch 120 can search for the resident cell by using the system information set preferentially, so that the full-frequency network searching is not required, and the electric quantity and the time consumed for network access can be saved; when the communication parameters corresponding to the system information set do not meet the requirements of the watch 120, the watch 120 searches the resident cell by utilizing a preset search strategy, so that the probability of communication failure is reduced.

When the communication parameters corresponding to the current system information set meet the requirements, the watch 120 may initiate physical layer synchronization and execute S730; when the communication parameters corresponding to the current system information set are not satisfactory, the wristwatch 120 can execute S740.

S730, the watch 120 determines whether the physical layer synchronization is successful.

When the communication parameters corresponding to the system information set meet the requirements of the watch 120, the watch 120 may also fail to camp (for example, the watch 120 leaves the cell corresponding to the system information set), and at this time, the watch 120 may preset a search policy to search for the camping cell, thereby reducing the probability of communication failure.

If the physical layer synchronization is successful, the watch 120 determines that the cell residence is successful, and the process is ended; if the physical layer synchronization is unsuccessful, the wristwatch 120 may perform S740.

S740, the wristwatch 120 searches for the camping cell according to the preset search strategy.

Examples of the method of synchronizing system information provided by the present application are described above in detail. It will be appreciated that the means for synchronizing system information, in order to achieve the above-described functions, comprise corresponding hardware structures and/or software modules for performing the respective 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 implemented 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 present application may divide the functional units of the apparatus for synchronizing system information according to the above-described method example, for example, each function may be divided into each functional unit, or two or more functions may be integrated in one processing unit. The integrated units may be implemented in hardware or in software functional units. It should be noted that the division of the units in the present application is illustrative, and is merely a logic function division, and other division manners may be implemented in practice.

Fig. 8 is a schematic structural diagram of an apparatus for synchronizing system information according to the present application.

The apparatus 800 includes a processing unit 810 and a communication unit 820, the processing unit 810 being capable of controlling the communication unit 820 to receive or transmit.

In an alternative embodiment, the processing unit 810 and the communication unit 820 are modules of the first terminal device, and the processing unit 810 is configured to: acquiring a system information set of a resident cell of a first terminal device;

the communication unit 820 is configured to: establishing short-range wireless communication connection with a second terminal device; and when the system information set meets the residence requirement of the second terminal equipment, the system information set is sent to the second terminal equipment through the short-distance wireless communication connection.

Optionally, the communication unit 820 is specifically configured to: and when the first terminal equipment is in a stable state, the system information set is sent to the second terminal equipment through the short-range wireless communication connection.

Optionally, the steady state includes: a state in which the moving speed is lower than the speed threshold.

Optionally, the communication unit 820 is specifically configured to: and sending a first synchronization frame to the second terminal equipment through the short-range wireless communication connection, wherein the system information set is carried in a load field of the first synchronization frame, the first synchronization frame further comprises at least one of a frame function identifier, a sequence number, a system information identifier and frame length information, the frame function identifier is used for indicating the function of the first synchronization frame, the sequence number is used for indicating the sequence of the first synchronization frame in the frame set, the system information identifier is used for indicating the type of the system information carried by the first synchronization frame, and the frame length information is used for indicating the data quantity of the first synchronization frame.

Optionally, the communication unit 820 is further configured to: receiving a response frame from the second terminal device through the short-range wireless communication connection, wherein the response frame is used for indicating whether the system information set is successfully received; and retransmitting the system information set to the second terminal equipment through the short-range wireless communication connection when the first terminal equipment does not receive the response frame or when the response frame indicates that the system information set fails to be received.

Optionally, the communication unit 820 is specifically configured to: and retransmitting the system information set to the second terminal equipment through the short-distance wireless communication connection when the retransmission times of the system information set are smaller than a time threshold.

Optionally, when the first synchronization frame includes the frame function identifier, the sequence number, and the system information identifier, the acknowledgement frame includes the frame function identifier, the sequence number, and the system information identifier.

Optionally, when the frame set includes a plurality of synchronization frames, the response frame includes only a sequence number of a last synchronization frame of the plurality of synchronization frames; or, the response frame includes a sequence number of a last synchronization frame in the plurality of synchronization frames, and a sequence number of at least one synchronization frame that is not successfully received in the plurality of synchronization frames.

Optionally, the system information set is a minimum system information set that meets the residence requirement of the second terminal device.

Optionally, the communication unit 820 is further configured to: and when the first terminal equipment acquires the full-volume system information set of the resident cell, the full-volume system information set is sent to the second terminal equipment through the short-distance wireless communication connection.

Optionally, the processing unit 810 is further configured to: updating the system information set; the communication unit 820 is also configured to: and when the updating of the system information set is completed, the updated system information set is sent to the second terminal equipment through the short-distance wireless communication connection.

In another alternative embodiment, the processing unit 810 and the communication unit 820 are modules of the second terminal device, and the processing unit 810 is configured to control the communication unit 820 to perform:

establishing short-range wireless communication connection with a first terminal device;

a set of system information is received from the first terminal device over the short range wireless communication connection, the set of system information being used to determine a camping cell of the second terminal device.

Optionally, the communication unit 820 is specifically configured to: and receiving a first synchronization frame from the first terminal equipment through the short-range wireless communication connection, wherein the system information set is carried in a load field of the first synchronization frame, the first synchronization frame further comprises at least one of a frame function identifier, a sequence number, a system information identifier and frame length information, the frame function identifier is used for indicating the function of the first synchronization frame, the sequence number is used for indicating the sequence of the first synchronization frame in the frame set, the system information identifier is used for indicating the type of system information carried by the first synchronization frame, and the frame length information is used for indicating the data quantity of the first synchronization frame.

Optionally, the communication unit 820 is further configured to: transmitting a response frame to the first terminal device through the short-range wireless communication connection, wherein the response frame is used for indicating whether the system information set is successfully received; and receiving retransmission data of the system information set from the first terminal equipment through the short-range wireless communication connection when the response frame indicates that the system information set fails to be received.

Optionally, the communication unit 820 is specifically configured to: and when the retransmission times of the system information set are smaller than a time threshold, receiving retransmission data of the system information set from the first terminal equipment through the short-distance wireless communication connection.

Optionally, the processing unit 810 is further configured to: when the short-distance wireless communication connection does not meet the transmission requirement, and when the communication parameters corresponding to the system information set meet the requirement of the second terminal equipment, searching the resident cell by using the system information set; and when the short-distance wireless communication connection does not meet the transmission requirement, and when the communication parameters corresponding to the system information set do not meet the requirement of the second terminal equipment, searching the resident cell by using a preset searching strategy.

Optionally, the processing unit 810 is further configured to: and searching the resident cell by using the preset searching strategy when searching the resident cell by using the system information fails.

Optionally, the preset search strategy includes: and searching the cells according to the sequence of the historical cells, the historical frequency points, the designated frequency points, the preferred frequency band and the full frequency band.

Optionally, the communication unit 820 is further configured to: a full set of system information is received from the first terminal device over the short range wireless communication connection.

The specific manner in which the apparatus 800 performs the method of synchronizing system information and the resulting benefits may be found in the relevant description of the method embodiments described above.

Fig. 9 is a schematic structural diagram of an apparatus for synchronizing system information according to the present application. Device 900 may be used to implement the methods described in the method embodiments above, and device 900 may be a chip or a terminal device.

The device 900 comprises one or more processors 901, which one or more processors 901 may support the device 900 to implement the method in the corresponding method embodiment of fig. 2. The processor 901 may be a general purpose processor or a special purpose processor. For example, the processor 901 may be a central processing unit (central processing unit, CPU) or a baseband processor. The baseband processor may be used to process communication data (e.g., a system information set) and the CPU may be used to control the device 900, execute software programs, and process data for the software programs.

The device 900 may further comprise a transceiver unit 905 and an antenna 906 for enabling input (reception) and output (transmission) of signals.

For example, the device 900 may be a chip, the transceiver 905 may be input and/or output circuitry of the chip, or the transceiver 905 may be a communication interface of the chip, which may be an integral part of a terminal device or other wireless communication device.

The device 900 may include one or more memories 902 having a program 904 stored thereon, the program 904 being executable by the processor 901 to generate instructions 903 such that the processor 901 performs the methods described in the method embodiments described above in accordance with the instructions 903. Optionally, the memory 902 may also have data stored therein. Alternatively, the processor 901 may also read data stored in the memory 902, which may be stored at the same memory address as the program 904, or which may be stored at a different memory address than the program 904.

The processor 901 and the memory 902 may be provided separately or may be integrated together, for example, on a System On Chip (SOC).

It should be understood that the steps of the above-described method embodiments may be accomplished by logic circuitry in the form of hardware or instructions in the form of software in the processor 901. The processor 901 may be a CPU, digital signal processor (digital signal processor, DSP), application specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA), or other programmable logic device such as discrete gates, transistor logic, or discrete hardware components.

The specific manner in which the apparatus 900 performs the method of synchronizing system information and the resulting benefits may be found in the relevant description of the method embodiments described above.

Fig. 10 is a schematic structural diagram of another apparatus for synchronizing system information according to the present application.

The apparatus 100 may be a mobile phone, a smart screen, a tablet computer, a wearable device, an in-vehicle electronic device, an augmented reality (augmented reality, AR) device, a Virtual Reality (VR) device, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (personal digital assistant, PDA), a projector, etc., and the embodiments of the present application do not limit the specific type of the apparatus 100.

The apparatus 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, keys 190, a motor 191, an indicator 192, a camera 193, a display 194, and a subscriber identity module (subscriber identification module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

The configuration shown in fig. 10 does not constitute a specific limitation on the apparatus 100. In other embodiments of the application, the apparatus 100 may include more or fewer components than those shown in FIG. 10, or the apparatus 100 may include a combination of some of the components shown in FIG. 10, or the apparatus 100 may include sub-components of some of the components shown in FIG. 10. The components shown in fig. 10 may be implemented in hardware, software, or a combination of software and hardware.

Processor 110 may include one or more processing units. For example, the processor 110 may include at least one of the following processing units: application processors (application processor, AP), modem processors, graphics processors (graphics processing unit, GPU), image signal processors (image signal processor, ISP), controllers, video codecs, digital signal processors (digital signal processor, DSP), baseband processors, neural-Network Processors (NPU). The different processing units may be separate devices or integrated devices.

The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby improving the efficiency of the system.

In some embodiments, the processor 110 may include one or more interfaces. For example, the processor 110 may include at least one of the following interfaces: inter-integrated circuit, I2C) interfaces, inter-integrated circuit audio (inter-integrated circuit sound, I2S) interfaces, pulse code modulation (pulse code modulation, PCM) interfaces, universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART) interfaces, mobile industry processor interfaces (mobile industry processor interface, MIPI), general-purpose input/output (GPIO) interfaces, SIM interfaces, USB interfaces.

The I2C interface is a bi-directional synchronous serial bus comprising a serial data line (SDA) and a serial clock line (derail clock line, SCL). In some embodiments, the processor 110 may contain multiple sets of I2C buses. The processor 110 may be coupled to the touch sensor 180K, charger, flash, camera 193, etc., respectively, through different I2C bus interfaces. For example: the processor 110 may couple the touch sensor 180K through an I2C interface, causing the processor 110 to communicate with the touch sensor 180K through an I2C bus interface, implementing the touch functionality of the device 100.

The I2S interface may be used for audio communication. In some embodiments, the processor 110 may contain multiple sets of I2S buses. The processor 110 may be coupled to the audio module 170 via an I2S bus to enable communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through the I2S interface, to implement a function of answering a call through the bluetooth headset.

PCM interfaces may also be used for audio communication to sample, quantize and encode analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled through a PCM interface. In some embodiments, the audio module 170 may also transmit audio signals to the wireless communication module 160 through the PCM interface to implement a function of answering a call through the bluetooth headset. Both the I2S interface and the PCM interface may be used for audio communication.

The UART interface is a universal serial data bus for asynchronous communications. The bus may be a bi-directional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is typically used to connect the processor 110 with the wireless communication module 160. For example: the processor 110 communicates with a bluetooth module in the wireless communication module 160 through a UART interface to implement a bluetooth function. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through a UART interface, to implement a function of playing music through a bluetooth headset.

The MIPI interface may be used to connect the processor 110 with peripheral devices such as the display 194 and camera 193. The MIPI interfaces include camera serial interfaces (camera serial interface, CSI), display serial interfaces (display serial interface, DSI), and the like. In some embodiments, processor 110 and camera 193 communicate through a CSI interface to implement the photographing function of apparatus 100. Processor 110 and display 194 communicate via a DSI interface to implement the display functions of apparatus 100.

The GPIO interface may be configured by software. The GPIO interface may be configured as a control signal interface as well as a data signal interface. In some embodiments, a GPIO interface may be used to connect the processor 110 with the camera 193, the display 194, the wireless communication module 160, the audio module 170, and the sensor module 180. The GPIO interface may also be configured as an I2C interface, an I2S interface, a UART interface, or a MIPI interface.

The USB interface 130 is an interface conforming to the USB standard specification, and may be, for example, a Mini (Mini) USB interface, a Micro (Micro) USB interface, or a C-type USB (USB Type C) interface. The USB interface 130 may be used to connect a charger to charge the device 100, to transfer data between the device 100 and a peripheral device, and to connect a headset to play audio through the headset. USB interface 130 may also be used to connect other devices 100, such as AR equipment.

The connection relationships between the modules shown in fig. 10 are merely illustrative, and do not constitute a limitation on the connection relationships between the modules of the apparatus 100. Alternatively, the modules of the apparatus 100 may be combined by using a plurality of connection manners in the foregoing embodiments.

The charge management module 140 is used to receive power from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charge management module 140 may receive the current of the wired charger through the USB interface 130. In some wireless charging embodiments, the charge management module 140 may receive electromagnetic waves (current path shown in dashed lines) through the wireless charging coil of the device 100. The charging management module 140 may also provide power to the device 100 through the power management module 141 while charging the battery 142.

The power management module 141 is used for connecting the battery 142, and the charge management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140 to power the processor 110, the internal memory 121, the display 194, the camera 193, the wireless communication module 160, and the like. The power management module 141 may also be used to monitor parameters such as battery capacity, battery cycle times, and battery state of health (e.g., leakage, impedance). Alternatively, the power management module 141 may be provided in the processor 110, or the power management module 141 and the charge management module 140 may be provided in the same device.

The wireless communication function of the apparatus 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the apparatus 100 may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution for wireless communication applied on the device 100, such as at least one of the following: second generation (2) ^th generation, 2G) mobile communication solutions, third generation (3 ^th generation, 3G) mobile communication solution, fourth generation (4 ^th generation, 4G) mobile communication solution, fifth generation (5 ^th generation, 5G) mobile communication solution. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering and amplifying the received electromagnetic waves, and then transmit the electromagnetic waves to a modem processor for demodulation. The mobile communication module 150 may further amplify the signal modulated by the modem processor, and the amplified signal is converted into electromagnetic waves by the antenna 1 and radiated. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be provided in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low frequency baseband signal to the baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs sound signals through audio devices (e.g., speaker 170A, receiver 170B) or displays images or video through display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional module, independent of the processor 110.

Similar to the mobile communication module 150, the wireless communication module 160 may also provide wireless communication solutions applied on the device 100, such as at least one of the following: wireless local area networks (wireless local area networks, WLAN), bluetooth (BT), bluetooth low energy (bluetooth low energy, BLE), ultra Wide Band (UWB), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication (near field communication, NFC), infrared (IR) technologies. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, frequency-modulates and filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate and amplify it, and convert the signal into electromagnetic waves to radiate via the antenna 2.

In some embodiments, antenna 1 of apparatus 100 is coupled to mobile communication module 150 and antenna 2 of apparatus 100 is coupled to wireless communication module 160 such that electronic device 100 may communicate with networks and other electronic devices via wireless communication techniques. The wireless communication technology may include at least one of the following communication technologies: global system for mobile communications (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM, IR technologies. The GNSS may include at least one of the following positioning techniques: global satellite positioning system (global positioning system, GPS), global navigation satellite system (global navigation satellite system, GLONASS), beidou satellite navigation system (beidou navigation satellite system, BDS), quasi zenith satellite system (quasi-zenith satellite system, QZSS), satellite based augmentation system (satellite based augmentation systems, SBAS).

The device 100 may implement display functions through a GPU, a display screen 194, and an application processor. The GPU is a microprocessor for image processing, and is connected to the display 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 194 may be used to display images or video. The display 194 includes a display panel. The display panel may employ a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a Mini light-emitting diode (Mini LED), a Micro light-emitting diode (Micro LED), a Micro OLED (Micro OLED), or a quantum dot LED (quantum dot light emitting diodes, QLED). In some embodiments, the apparatus 100 may include 1 or N display screens 194, N being a positive integer greater than 1.

The apparatus 100 may implement a photographing function through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, and the like.

The ISP is used to process data fed back by the camera 193. For example, when photographing, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electric signal, and the camera photosensitive element transmits the electric signal to the ISP for processing and is converted into an image visible to naked eyes. The ISP can carry out algorithm optimization on noise, brightness and color of the image, and can optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in the camera 193.

The camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image onto the photosensitive element. The photosensitive element may be a charge coupled device (charge coupled device, CCD) or a Complementary Metal Oxide Semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, which is then transferred to the ISP to be converted into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into a standard Red Green Blue (RGB), YUV, etc. format image signal. In some embodiments, the apparatus 100 may include 1 or N cameras 193, N being a positive integer greater than 1.

The digital signal processor is used for processing digital signals, and can process other digital signals besides digital image signals. For example, when the apparatus 100 selects a frequency bin, a digital signal processor is used to fourier transform the frequency bin energy, or the like.

Video codecs are used to compress or decompress digital video. The apparatus 100 may support one or more video codecs. In this way, the apparatus 100 may play or record video in a variety of encoding formats, such as: dynamic picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3, and MPEG4.

The NPU is a processor which refers to the biological neural network structure, for example, refers to the transmission mode among human brain neurons to rapidly process input information, and can also be continuously self-learned. Intelligent awareness and other functions of the device 100 may be implemented by the NPU, for example: image recognition, face recognition, speech recognition, and text understanding.

The external memory interface 120 may be used to connect an external memory card, such as a Secure Digital (SD) card, to implement the memory capability of the expansion device 100. The external memory card communicates with the processor 110 through an external memory interface 120 to implement data storage functions. For example, files such as music, video, etc. are stored in an external memory card.

The internal memory 121 may be used to store computer executable program code including instructions. The internal memory 121 may include a storage program area and a storage data area. Wherein the storage program area may store application programs required for at least one function (e.g., a sound playing function and an image playing function) of the operating system. The storage data area may store data (e.g., audio data and phonebooks) created during use of the device 100. Further, the internal memory 121 may include a high-speed random access memory, and may also include a nonvolatile memory such as: at least one disk storage device, a flash memory device, and a universal flash memory (universal flash storage, UFS), etc. The processor 110 performs various processing methods of the apparatus 100 by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor.

The device 100 may implement audio functions, such as music playing and recording, through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, and the like.

The audio module 170 is used to convert digital audio information into an analog audio signal output, and may also be used to convert an analog audio input into a digital audio signal. The audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 or a portion of the functional modules of the audio module 170 may be disposed in the processor 110.

The speaker 170A, also referred to as a horn, is used to convert audio electrical signals into sound signals. The device 100 may listen to music or hands-free conversation through the speaker 170A.

A receiver 170B, also referred to as an earpiece, converts the audio electrical signal into a sound signal. When a user uses the device 100 to answer a telephone call or voice message, the user can answer the voice by placing the receiver 170B close to the ear.

Microphone 170C, also known as a microphone or microphone, is used to convert sound signals into electrical signals. When a user makes a call or transmits voice information, a sound signal may be input to the microphone 170C by sounding near the microphone 170C. The apparatus 100 may be provided with at least one microphone 170C. In other embodiments, the apparatus 100 may be provided with two microphones 170C to achieve a noise reduction function. In other embodiments, the device 100 may also be provided with three, four or more microphones 170C to perform the functions of identifying the source of sound and directing the recording. The processor 110 may process the electrical signal output by the microphone 170C, for example, the audio module 170 and the wireless communication module 160 may be coupled through a PCM interface, and after the microphone 170C converts the environmental sound into an electrical signal (such as a PCM signal), the electrical signal is transmitted to the processor 110 through the PCM interface; the electrical signal is subjected to volume analysis and frequency analysis from the processor 110 to determine the volume and frequency of the ambient sound.

The earphone interface 170D is used to connect a wired earphone. The headset interface 170D may be a USB interface 130 or a 3.5mm open mobile device 100 platform (open mobile terminal platform, OMTP) standard interface, a american cellular telecommunications industry association (cellular telecommunications industry association of the USA, CTIA) standard interface.

The pressure sensor 180A is used to sense a pressure signal, and may convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be disposed on the display screen 194. The pressure sensor 180A may be of various types, such as a resistive pressure sensor, an inductive pressure sensor, or a capacitive pressure sensor. The capacitive pressure sensor may be a device comprising at least two parallel plates with conductive material, and when a force is applied to the pressure sensor 180A, the capacitance between the electrodes changes, and the device 100 determines the strength of the pressure based on the change in capacitance. When a touch operation acts on the display screen 194, the apparatus 100 detects the touch operation according to the pressure sensor 180A. The device 100 may also calculate the location of the touch based on the detection signal of the pressure sensor 180A. In some embodiments, touch operations that act on the same touch location, but at different touch operation strengths, may correspond to different operation instructions. For example: executing an instruction for checking the short message when the touch operation with the touch operation intensity smaller than the first pressure threshold acts on the short message application icon; and executing the instruction of newly creating the short message when the touch operation with the touch operation intensity being larger than or equal to the first pressure threshold acts on the short message application icon.

The gyro sensor 180B may be used to determine a motion gesture of the apparatus 100. In some embodiments, the angular velocity of device 100 about three axes (i.e., the x-axis, the y-axis, and the z-axis) may be determined by gyro sensor 180B. The gyro sensor 180B may be used for photographing anti-shake. For example, when the shutter is pressed, the gyro sensor 180B detects the angle of the shake of the apparatus 100, calculates the distance to be compensated for by the lens module according to the angle, and allows the lens to counteract the shake of the apparatus 100 by the reverse motion, thereby realizing anti-shake. The gyro sensor 180B can also be used for scenes such as navigation and motion sensing games.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, the device 100 calculates altitude from barometric pressure values measured by the barometric pressure sensor 180C, aiding in positioning and navigation.

The magnetic sensor 180D includes a hall sensor. The device 100 may detect the opening and closing of the flip holster using the magnetic sensor 180D. In some embodiments, when the device 100 is a flip-top machine, the device 100 may detect the opening and closing of the flip-top according to the magnetic sensor 180D. The device 100 can set the characteristics of automatic unlocking of the flip cover according to the detected opening and closing state of the leather sheath or the detected opening and closing state of the flip cover.

The acceleration sensor 180E can detect the magnitude of acceleration of the device 100 in various directions (typically the x-axis, y-axis, and z-axis). The magnitude and direction of gravity can be detected when the device 100 is stationary. The acceleration sensor 180E may also be used to recognize the gesture of the apparatus 100 as an input parameter for applications such as landscape switching and pedometer.

The distance sensor 180F is used to measure a distance. The device 100 may measure distance by infrared or laser. In some embodiments, for example, in a shooting scene, the apparatus 100 may range using the distance sensor 180F to achieve fast focusing.

The proximity light sensor 180G may include, for example, a light-emitting diode (LED) and a light detector, for example, a photodiode. The LED may be an infrared LED. The device 100 emits infrared light outwards through the LED. The device 100 uses a photodiode to detect infrared reflected light from nearby objects. When reflected light is detected, the apparatus 100 may determine that an object is present nearby. When no reflected light is detected, the apparatus 100 may determine that there is no object nearby. The device 100 can use the proximity light sensor 180G to detect whether the user is holding the device 100 close to the ear for talking, so as to automatically extinguish the screen for power saving. The proximity light sensor 180G may also be used for automatic unlocking and automatic screen locking in holster mode or pocket mode.

The ambient light sensor 180L is used to sense ambient light level. The device 100 may adaptively adjust the brightness of the display 194 based on the perceived ambient light level. The ambient light sensor 180L may also be used to automatically adjust white balance when taking a photograph. Ambient light sensor 180L may also cooperate with proximity light sensor 180G to detect whether device 100 is in a pocket to prevent false touches.

The fingerprint sensor 180H is used to collect a fingerprint. The device 100 can utilize the collected fingerprint characteristics to realize the functions of unlocking, accessing an application lock, photographing, answering an incoming call and the like.

The temperature sensor 180J is for detecting temperature. In some embodiments, the apparatus 100 performs a temperature processing strategy using the temperature detected by the temperature sensor 180J. For example, when the temperature reported by temperature sensor 180J exceeds a threshold, apparatus 100 performs a reduction in performance of a processor located in the vicinity of temperature sensor 180J in order to reduce power consumption to implement thermal protection. In other embodiments, when the temperature is below another threshold, the device 100 heats the battery 142 to avoid low temperatures causing the device 100 to shut down abnormally. In other embodiments, when the temperature is below a further threshold, the device 100 performs boosting of the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperatures.

The touch sensor 180K, also referred to as a touch device. The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, which is also called a touch screen. The touch sensor 180K is for detecting a touch operation acting thereon or thereabout. The touch sensor 180K may communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to touch operations may be provided through the display 194. In other embodiments, the touch sensor 180K may also be disposed on the surface of the device 100 and at a different location than the display 194.

The bone conduction sensor 180M may acquire a vibration signal. In some embodiments, bone conduction sensor 180M may acquire a vibration signal of a human vocal tract vibrating bone pieces. The bone conduction sensor 180M may also contact the pulse of the human body to receive the blood pressure pulsation signal. In some embodiments, bone conduction sensor 180M may also be provided in a headset, in combination with an osteoinductive headset. The audio module 170 may analyze the voice signal based on the vibration signal of the sound portion vibration bone block obtained by the bone conduction sensor 180M, so as to implement a voice function. The application processor may analyze the heart rate information based on the blood pressure beat signal acquired by the bone conduction sensor 180M, so as to implement a heart rate detection function.

The keys 190 include a power-on key and an volume key. The keys 190 may be mechanical keys or touch keys. The device 100 may receive a key input signal and implement a function associated with the case input signal.

The motor 191 may generate vibration. The motor 191 may be used for incoming call alerting as well as for touch feedback. The motor 191 may generate different vibration feedback effects for touch operations acting on different applications. The motor 191 may also produce different vibration feedback effects for touch operations acting on different areas of the display screen 194. Different application scenarios (e.g., time alert, receipt message, alarm clock, and game) may correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

The indicator 192 may be an indicator light, which may be used to indicate a change in state of charge and charge, or may be used to indicate a message, missed call, and notification.

The SIM card interface 195 is used to connect a SIM card. The SIM card may be inserted into the SIM card interface 195 to make contact with the apparatus 100, or may be removed from the SIM card interface 195 to make separation from the apparatus 100. The device 100 may support 1 or N SIM card interfaces, N being a positive integer greater than 1. The same SIM card interface 195 may simultaneously insert multiple cards, which may be of the same type or of different types. The SIM card interface 195 may also be compatible with external memory cards. The device 100 interacts with the network through the SIM card to perform functions such as talking and data communication. In some embodiments, the device 100 employs an embedded SIM (eSIM) card, which may be embedded in the device 100 and not separable from the device 100.

The application also provides a computer program product which, when executed by a processor, implements the method of any of the method embodiments of the application.

The computer program product may be stored in a memory and eventually converted to an executable object file that can be executed by a processor through preprocessing, compiling, assembling, and linking.

The computer program product is also code that can be cured in a chip. The application is not limited to the specific form of computer program product.

The application also provides a computer readable storage medium having stored thereon a computer program which when executed by a computer implements the method according to any of the method embodiments of the application. The computer program may be a high-level language program or an executable object program.

The computer readable storage medium may be volatile memory or nonvolatile memory, or may include both volatile memory and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working processes and technical effects of the apparatus and device described above may refer to corresponding processes and technical effects in the foregoing method embodiments, which are not described in detail herein.

In the several embodiments provided by the present application, the disclosed systems, devices, and methods may be implemented in other manners. For example, some features of the method embodiments described above may be omitted, or not performed. The above-described apparatus embodiments are merely illustrative, the division of units is merely a logical function division, and there may be additional divisions in actual implementation, and multiple units or components may be combined or integrated into another system. In addition, the coupling between the elements or the coupling between the elements may be direct or indirect, including electrical, mechanical, or other forms of connection.

It should be understood that, in various embodiments of the present application, the size of the sequence number of each process does not mean that the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In addition, the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely one association relationship describing the associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In summary, the foregoing description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method of synchronizing system information, comprising:

a first terminal device acquires a system information set of a resident cell of the first terminal device, wherein the system information set comprises one or more pieces of system information used for indicating the configuration of the cell where the first terminal device is located so that the accessed terminal device works correctly in the cell, the system information comprises a master information block MIB and a system information block SIB, and the system information set is a minimum system information set meeting the resident requirement of a second terminal device;

The first terminal equipment and the second terminal equipment are connected in a short-distance wireless communication mode, and the second terminal equipment is wearable equipment;

when the first terminal device determines that the system information set meets the residence requirement of the second terminal device and the first terminal device is in a stable state, the first terminal device sends the system information set to the second terminal device through the short-range wireless communication connection, wherein the stable state comprises: a state in which the moving speed is lower than the speed threshold.

2. The method of claim 1, wherein the first terminal device transmitting the set of system information to the second terminal device over the short-range wireless communication connection comprises:

the first terminal device sends a first synchronization frame to the second terminal device through the short-range wireless communication connection, the system information set is carried in a load field of the first synchronization frame, the first synchronization frame further comprises at least one of a frame function identifier, a sequence number, a system information identifier and frame length information, the frame function identifier is used for indicating the function of the first synchronization frame, the sequence number is used for indicating the sequence of the first synchronization frame in the frame set, the system information identifier is used for indicating the type of system information carried by the first synchronization frame, and the frame length information is used for indicating the data quantity of the first synchronization frame.

3. The method as recited in claim 2, further comprising:

the first terminal device receives a response frame from the second terminal device through the short-range wireless communication connection, wherein the response frame is used for indicating whether the system information set is successfully received;

when the first terminal device does not receive the response frame, or when the response frame indicates that the system information set fails to be received, the first terminal device retransmits the system information set to the second terminal device through the short-range wireless communication connection.

4. A method according to claim 3, wherein the first terminal device retransmitting the set of system information to the second terminal device over the short range wireless communication connection comprises:

and when the retransmission times of the system information set are smaller than a time threshold, the first terminal equipment retransmits the system information set to the second terminal equipment through the short-distance wireless communication connection.

5. A method according to claim 3, wherein when the first synchronization frame comprises the frame function identification, the sequence number and the system information identification, the acknowledgement frame comprises the frame function identification, the sequence number and the system information identification.

6. The method of claim 5, wherein when the set of frames comprises a plurality of sync frames,

the response frame only comprises the serial number of the last synchronous frame in the synchronous frames; or,

the response frame includes a sequence number of a last synchronization frame of the plurality of synchronization frames and a sequence number of at least one synchronization frame of the plurality of synchronization frames that was not successfully received.

7. The method as recited in claim 6, further comprising:

when the first terminal equipment acquires the full-volume system information set of the resident cell, the first terminal equipment sends the full-volume system information set to the second terminal equipment through the short-distance wireless communication connection.

8. The method according to any one of claims 1 to 6, further comprising:

the first terminal equipment updates the system information set;

and when the updating of the system information set is completed, the first terminal equipment sends the updated system information set to the second terminal equipment through the short-distance wireless communication connection.

9. A method of synchronizing system information, comprising:

the method comprises the steps that short-distance wireless communication connection is established between second terminal equipment and first terminal equipment, wherein the second terminal equipment is wearable equipment;

The second terminal device receives a system information set from the first terminal device through the short-range wireless communication connection, where the system information set is information sent to the second terminal device when the first terminal device determines that the system information set meets the residence requirement of the second terminal device and the first terminal device is in a stable state, the system information set is used to determine a residence cell of the second terminal device, the system information set includes one or more system information used to indicate configuration of the cell where the second terminal device is located so that the accessed terminal device works correctly in the cell, the system information set includes a master information block MIB and a system information block SIB, and the system information set is a minimum system information set meeting the residence requirement of the second terminal device, and the stable state includes: a state in which the moving speed is lower than the speed threshold.

10. The method of claim 9, wherein the second terminal device receives a set of system information from the first terminal device over the short-range wireless communication connection, comprising:

the second terminal device receives a first synchronization frame from the first terminal device through the short-range wireless communication connection, the system information set is carried in a load field of the first synchronization frame, the first synchronization frame further comprises at least one of a frame function identifier, a sequence number, a system information identifier and frame length information, the frame function identifier is used for indicating the function of the first synchronization frame, the sequence number is used for indicating the sequence of the first synchronization frame in the frame set, the system information identifier is used for indicating the type of system information carried by the first synchronization frame, and the frame length information is used for indicating the data quantity of the first synchronization frame.

11. The method as recited in claim 10, further comprising:

the second terminal equipment sends a response frame to the first terminal equipment through the short-range wireless communication connection, wherein the response frame is used for indicating whether the system information set is successfully received or not;

and when the response frame indicates that the system information set fails to be received, the second terminal equipment receives retransmission data of the system information set from the first terminal equipment through the short-range wireless communication connection.

12. The method of claim 11, wherein the second terminal device receiving retransmission data of the set of system information from the first terminal device over the short range wireless communication connection comprises:

and when the retransmission times of the system information set are smaller than a time threshold, the second terminal equipment receives retransmission data of the system information set from the first terminal equipment through the short-range wireless communication connection.

13. The method of claim 11, wherein when the first synchronization frame includes the frame function identification, the sequence number, and the system information identification, the acknowledgement frame includes the frame function identification, the sequence number, and the system information identification.

14. The method of claim 13, wherein when the set of frames comprises a plurality of synchronization frames,

15. The method according to any one of claims 9 to 14, further comprising:

when the short-distance wireless communication connection does not meet the transmission requirement, and when the communication parameters corresponding to the system information set meet the requirement of the second terminal equipment, the second terminal equipment searches the resident cell by using the system information set;

and when the short-distance wireless communication connection does not meet the transmission requirement, and when the communication parameters corresponding to the system information set do not meet the requirement of the second terminal equipment, the second terminal equipment searches the resident cell by using a preset search strategy.

16. The method as recited in claim 15, further comprising:

and when the second terminal equipment fails to search the resident cell by using the system information set, the second terminal equipment searches the resident cell by using the preset search strategy.

17. The method of claim 15, wherein the preset search strategy comprises:

and searching the cells according to the sequence of the historical cells, the historical frequency points, the designated frequency points, the preferred frequency band and the full frequency band.

18. The method as recited in claim 17, further comprising:

the second terminal device receives a full set of system information from the first terminal device over the short range wireless communication connection.

19. An apparatus for synchronizing system information, comprising a processor and a memory, the processor and the memory being coupled, the memory being for storing a computer program that, when executed by the processor, causes the apparatus to perform the method of any one of claims 1 to 8 or the apparatus to perform the method of any one of claims 9 to 18.

20. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program, which when executed by a processor causes the processor to perform the method of any one of claims 1 to 8 or causes the processor to perform the method of any one of claims 9 to 18.