CN108632920B

CN108632920B - System information transmission method and device

Info

Publication number: CN108632920B
Application number: CN201710178793.XA
Authority: CN
Inventors: 李赛楠; 黄煌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-03-23
Filing date: 2017-03-23
Publication date: 2020-03-20
Anticipated expiration: 2037-03-23
Also published as: WO2018171451A1; CN108632920A

Abstract

The application discloses a method and a device for transmitting system information. In the application, other system information blocks having the same system information content with a cell of a target high-frequency cell in a set area range form a system information block group, when a terminal device performs cell switching, the terminal device receives a basic system information message of the target network device, the basic system information message carries an identifier of the system information block group, and the terminal device acquires other system information blocks included in the system information block group having a different identifier from the identifier of the system information block group of the target high-frequency cell according to the difference between the identifier of the system information block group of a source high-frequency cell and the identifier of the system information block group of the target high-frequency cell, so that in a high-frequency networking, the terminal device does not need to acquire other system information blocks included in all the system information block groups of the target high-frequency cell, and signaling overhead between the terminal device and the network device is saved.

Description

System information transmission method and device

Technical Field

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

Background

In order to meet the high capacity requirement of the next generation communication system, a high frequency band greater than 6GHz is introduced for communication, so as to utilize high bandwidth and high rate transmission. Due to high path loss of high-frequency communication, narrow beams are required to ensure propagation distance and high beam gain, however, the coverage of the narrow beams is limited, and narrow beam alignment between the network device and the terminal device is required to ensure communication quality.

System Information (SI) in a Long Term Evolution (LTE) System is organized in the form of System Information Blocks (SIBs), each of which aggregates some function-related parameters. The system information in LTE is transmitted periodically, and the system information in the high-frequency network requires the network device to scan multiple beams and transmit the beams to the terminal device, so as to ensure coverage of the whole cell. Moreover, since the coverage area of the high-frequency cell is small, the distribution of the high-frequency cell needs to be very dense to ensure coverage, when the terminal device moves in a certain area, switching among different high-frequency cells is very frequent, while the system information of each high-frequency cell in the certain area is mostly the same, and if the terminal device needs to acquire all the system information again every time the terminal device enters one cell, a large burden is imposed on the network.

Fig. 1 is a schematic diagram of a system information transmission scheme under a high-frequency and low-frequency hybrid networking in the prior art. In fig. 1, a macro cell (Achor cell) is a low frequency system, and a plurality of high frequency cells (e.g., cell2) and low frequency cells (e.g., small cell 3) may exist in a coverage area of the macro cell, and the macro cell may manage system information of other cells in the coverage area of the macro cell: when the macro cell sends other system information blocks (other SIBs), the other SIBs carry basic system information blocks (minimum SIBs) of cells in the coverage area thereof, and carry identifiers (index) of the cells corresponding to the respective minimum SIBs and valid information (e.g., value tag) of the minimum SIBs.

When the terminal equipment enters the coverage area of the macro cell, the terminal equipment is firstly connected to the macro cell, the minium SIB of all cells in the coverage area of the macro cell is read, and then when the terminal equipment needs to be accessed to other cells in the coverage area of a certain macro cell, the cell identification of the cell and the effective information of the minium SIB are identified, the corresponding minium SIB can be known, and when the terminal equipment needs to acquire the other SIB of the cell, the terminal equipment can also be scheduled and transmitted by the connected macro cell. Because the macro cell is low frequency, beam scanning is not needed for transmitting system information, and the overhead of a large amount of beam scanning for transmitting the system information by the high-frequency small station is reduced.

However, when the communication system is a high-frequency independent network, or some areas only have high-frequency cells and no low-frequency macro cells, the scheme cannot be implemented. Therefore, it is desirable to solve the problem of transmitting system information in a high frequency network to reduce the overhead of transmitting system information.

Disclosure of Invention

The application provides a method and a device for transmitting system information, which are used for solving the problem of transmission of the system information in a high-frequency network and reducing the transmission overhead of the system information.

In one aspect, a method for transmitting system information is provided, where the method includes: when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, the terminal device receives a basic system information message from a network device corresponding to the target high-frequency cell, wherein the basic system information message comprises an identification of a system information block group of at least one other system information block and at least one basic system information block, each system information block group comprises at least one other system information block having the same system information content as at least one cell of the target high-frequency cell within a set area range, and the at least one other system information block is a system information block except the basic system information block; the terminal device further performs at least one of the following steps: if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is identical to the identifier of the at least one system information block group of the target high-frequency cell, the terminal device does not need to acquire at least one other system information block included in any system information block group of the target high-frequency cell; if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is partially the same as the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends a first acquisition request to the network device, where the first acquisition request is used to request acquisition of at least one other system information block included in a system information block group different from the identifier of the at least one system information block group of the target high-frequency cell; if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends a second acquisition request to the network device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high-frequency cell.

In this implementation manner, the terminal device does not need to acquire other system information blocks included in all system information block groups of the target high-frequency cell, thereby saving signaling overhead between the terminal device and the network device.

In another aspect, a method for transmitting system information is provided, the method including: when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, the terminal device receives a basic system information message from a network device corresponding to the target high-frequency cell, wherein the basic system information message comprises an identification of a system information block group of at least one other system information block, and each system information block group comprises at least one other system information block with the same system information content as at least one cell of the target high-frequency cell within a set area; the terminal device further performs at least one of the following steps: if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is identical to the identifier of the at least one system information block group of the target high-frequency cell, the terminal device does not need to acquire at least one other system information block included in any system information block group of the target high-frequency cell; if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is partially the same as the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends a first acquisition request to the network device, where the first acquisition request is used to request acquisition of at least one other system information block included in a system information block group different from the identifier of the at least one system information block group of the target high-frequency cell; if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends a second acquisition request to the network device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high-frequency cell.

In one implementation, the basic system information message further includes an area identification of the target high frequency cell, and the method further includes: the terminal device further performs at least one of the following steps: if the area identifier of the source high-frequency cell is different from the area identifier of the target high-frequency cell, the terminal device sends the second acquisition request to the network device; if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is all the same as the identifier of the at least one system information block group of the target high-frequency cell, the terminal device does not need to acquire at least one other system information block included in any system information block group of the target high-frequency cell; if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell, which is stored by the terminal device, is partially the same as the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends the first acquisition request to the network device; and if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell, which is stored by the terminal device, is different from the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends the second acquisition request to the network device.

In the implementation mode, the operation of comparing whether the system information block group identifiers are the same or not by the terminal equipment is simpler and the efficiency is higher by setting the area identifiers.

In another implementation manner, the system information block groups having the same system information content within the set area range have the same identifier, and the system information block groups having different system information content within the set area range have different identifiers.

In another aspect, a terminal device is provided, where the terminal device has a function of implementing the behavior of the terminal device in the method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In a possible implementation manner, the terminal device includes: a receiving unit, configured to receive a basic system information message from a network device corresponding to a target high frequency cell when a terminal device is handed over from a source high frequency cell to the target high frequency cell, where the basic system information message includes an identifier of a system information block group of at least one other system information block and at least one basic system information block, each system information block group includes at least one other system information block having a same system information content as at least one cell of the target high frequency cell within a set area range, and the at least one other system information block is a system information block other than the basic system information block; a sending unit, configured to perform at least one of the following operations: if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is identical to the identifier of the at least one system information block group of the target high-frequency cell, at least one other system information block included in any system information block group of the target high-frequency cell does not need to be acquired; if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is partially the same as the identifier of the at least one system information block group of the target high-frequency cell, sending a first acquisition request to the network device, where the first acquisition request is used to request to acquire at least one other system information block included in a system information block group different from the identifier of the at least one system information block group of the target high-frequency cell; if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, sending a second acquisition request to the network device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high-frequency cell.

In another possible implementation manner, the terminal device includes: a receiver, a transmitter, a memory, and a processor; wherein the memory stores a set of program codes therein, and the processor is configured to call the program codes stored in the memory to perform the following operations: when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, controlling the receiver to receive a basic system information message from a network device corresponding to the target high-frequency cell, wherein the basic system information message comprises an identification of a system information block group of at least one other system information block and at least one basic system information block, each system information block group comprises at least one other system information block having the same system information content as at least one cell of the target high-frequency cell within a set area range, and the at least one other system information block is a system information block other than the basic system information block; the processor further performs at least one of: if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is identical to the identifier of the at least one system information block group of the target high-frequency cell, at least one other system information block included in any system information block group of the target high-frequency cell does not need to be acquired; if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is partially the same as the identifier of the at least one system information block group of the target high-frequency cell, controlling the transmitter to transmit a first acquisition request to the network device, where the first acquisition request is used to request acquisition of at least one other system information block included in a system information block group different from the identifier of the at least one system information block group of the target high-frequency cell; and if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, controlling the transmitter to transmit a second acquisition request to the network device, wherein the second acquisition request is used for acquiring at least one other system information block included in all system information block groups of the target high-frequency cell.

Based on the same inventive concept, as the principle and the beneficial effects of the apparatus for solving the problems can refer to the method implementation modes of the possible terminal devices and the beneficial effects brought by the method implementation modes, the method implementation can refer to the method implementation, and repeated parts are not described again.

In another aspect, a method for transmitting system information is provided, where the method includes: broadcasting a basic system information message by a network device corresponding to a target high-frequency cell, wherein the basic system information message comprises an identification of a system information block group of at least one other system information block and at least one basic system information block, each system information block group comprises at least one other system information block having the same system information content as at least one cell of the target high-frequency cell within a set area, and the at least one other system information block is a system information block other than the basic system information block; the network device further performs at least one of the following: if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is partially identical to the identifier of the at least one system information block group of the target high-frequency cell, the network device receives a first acquisition request from the terminal device, where the first acquisition request is used to request to acquire at least one other system information block included in a system information block group of the terminal device, where the identifier of the at least one system information block group of the source high-frequency cell is partially different from the identifier of the at least one system information block group of the target high-frequency cell, and the network device sends the requested at least one other system information block included in a system information block group of which the identifier is partially different to the terminal device; if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, the network device receives a second acquisition request from the terminal device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high-frequency cell, and the network device sends the at least one other system information block included in all system information block groups of the target high-frequency cell to the terminal device.

In this implementation manner, the terminal device does not need to acquire other system information blocks included in all system information block groups of the target high-frequency cell, thereby saving signaling overhead between the network device and the terminal device.

In one implementation, the basic system information message further includes an area identification of the target high frequency cell, and the method further includes: the network device further performs at least one of the following: if the area identifier of the source high-frequency cell is different from the area identifier of the target high-frequency cell, the network device receives the second acquisition request from the terminal device, and the network device sends at least one other system information block included in all system information block groups of the target high-frequency cell to the terminal device; if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is the same as the identifier of the at least one system information block group of the target high-frequency cell, the network device receives the first acquisition request from the terminal device, and the network device sends the requested at least one other system information block included in the system information block group of which the identifier is different to the terminal device; if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, the network device receives the second acquisition request from the terminal device, and the network device sends, to the terminal device, at least one other system information block included in all the system information block groups of the target high-frequency cell.

In another implementation manner, the system information block group sent by the network device to the terminal device further includes an identifier of the system information block group.

In this implementation, the terminal device stores at least one other system information block included in the system information block group of the target high-frequency cell according to the identifier of the system information block group, so that when the terminal device is switched to the target high-frequency cell or a cell having the same system information block group as the target high-frequency cell, the terminal device does not need to repeatedly acquire at least one other system information block included in the system information block groups.

In yet another implementation, the method further comprises: if any system information block group of any cell adjacent to the target high-frequency cell comprises at least one other system information block which is updated, the network equipment receives an identifier of the updated at least one system information block group transmitted by the cell which generates the other system information block update in a feedback manner; the network equipment compares the identifier of at least one other system information block group of the target high-frequency cell with the identifier of at least one updated system information block group of the adjacent cell to obtain the identifier of at least one system information block group with the same identifier, and broadcasts the identifier of at least one system information block group with the same identifier in the basic system information message.

In this implementation, through backhaul update between network devices, the network device may obtain more updated identifiers of system information block groups of cells within the set area.

In still another aspect, a network device is provided, and the network device has a function of implementing the network device behavior in the method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In one possible implementation, the network device includes: a sending unit, configured to broadcast a basic system information message, where the basic system information message includes an identifier of a system information block group of at least one other system information block and at least one basic system information block, each system information block group includes at least one other system information block having the same system information content as at least one cell of a target high-frequency cell within a set area, and the at least one other system information block is a system information block other than the basic system information block; a receiving unit, configured to receive a first acquisition request from a terminal device if an identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is partially the same as an identifier of the at least one system information block group of the target high frequency cell, where the first acquisition request is used to request to acquire at least one other system information block included in a system information block group of the terminal device whose identifier of the at least one system information block group of the source high frequency cell is partially different from the identifier of the at least one system information block group of the target high frequency cell, and the transmitting unit is used to transmit the at least one other system information block included in the system information block group of which the requested identifier is partially different to the terminal device; and/or the receiving unit is further configured to receive a second acquisition request from the terminal device if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high-frequency cell, and the sending unit is further used to send the at least one other system information block included in all system information block groups of the target high-frequency cell to the terminal device.

In another possible implementation manner, the network device includes: a receiver, a transmitter, a memory, and a processor; wherein the memory stores a set of program codes therein, and the processor is configured to call the program codes stored in the memory to perform the following operations: controlling the transmitter to broadcast a basic system information message, wherein the basic system information message comprises an identification of a system information block group of at least one other system information block and at least one basic system information block, each system information block group comprises at least one other system information block having the same system information content as at least one cell of the target high frequency cell within a set area, and the at least one other system information block is a system information block other than the basic system information block; the processor further performs at least one of: if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is partially identical to the identifier of the at least one system information block group of the target high-frequency cell, controlling the receiver to receive a first acquisition request from the terminal device, where the first acquisition request is used to request acquisition of at least one other system information block included in a system information block group of the source high-frequency cell of the terminal device, where the identifier of the at least one system information block group of the source high-frequency cell is partially different from the identifier of the at least one system information block group of the target high-frequency cell, and controlling the transmitter to transmit the at least one other system information block included in a system information block group of which the requested identifier is partially different to the terminal device; if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, controlling the receiver to receive a second acquisition request from the terminal device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high-frequency cell, and controlling the transmitter to transmit the at least one other system information block included in all system information block groups of the target high-frequency cell to the terminal device.

Based on the same inventive concept, as the principle and the beneficial effects of the apparatus for solving the problems can refer to the method implementation of each possible network device and the beneficial effects brought by the method implementation, the implementation of the apparatus can refer to the implementation of the method, and repeated details are not repeated.

In still another aspect, a method for transmitting system information is provided, the method including: when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, the terminal device receives a basic system information message from a network device corresponding to the target high-frequency cell, wherein the basic system information message comprises at least one basic system information block and an identification of a system information block group of the at least one basic system information block, and each system information block group comprises at least one basic system information block with the same system information content as at least one cell of the target high-frequency cell within a set area; the terminal device further performs at least one of the following steps: if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal equipment is identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, the terminal equipment stops acquiring the basic system information message; if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal device is partially identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, the terminal device obtains at least one basic system information block included in at least one system information block group identifier of at least one basic system information block of the source high-frequency cell and at least one system information block group identifier of at least one basic system information block of the target high-frequency cell.

In this implementation manner, the terminal device determines whether to continue to acquire the basic system information or to monitor the basic system information blocks included in the system information block groups of different parts of the identifier according to the difference between the identifier of the system information block group of the source high-frequency cell and the identifier of the system information block group of the target high-frequency cell, so that in the high-frequency networking, the terminal device does not need to acquire all the basic system information blocks included in the basic system information all the time, and the cruising ability of the terminal device is improved.

As an alternative implementation, there is provided a method for transmitting system information, the method including: when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, the terminal device receives a basic system information message from a network device corresponding to the target high-frequency cell, wherein the basic system information message comprises an identification of a system information block group of at least one basic system information block, and each system information block group comprises at least one basic system information block with the same system information content as at least one cell of the target high-frequency cell within a set area; the terminal device further performs at least one of the following steps: if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal equipment is identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, the terminal equipment stops acquiring the basic system information message; if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal device is partially identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, the terminal device obtains at least one basic system information block included in at least one system information block group identifier of at least one basic system information block of the source high-frequency cell and at least one system information block group identifier of at least one basic system information block of the target high-frequency cell.

In still another aspect, a terminal device is provided, where the terminal device has a function of implementing the behavior of the terminal device in the above method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In a possible implementation manner, the terminal device includes: a receiving unit, configured to receive a basic system information message from a network device corresponding to a target high frequency cell when a terminal device is handed over from a source high frequency cell to the target high frequency cell, where the basic system information message includes at least one basic system information block and an identification of a system information block group of the at least one basic system information block, and each system information block group includes at least one basic system information block having a same system information content as at least one cell of the target high frequency cell within a set area; a sending unit, configured to perform at least one of the following operations: if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal equipment is identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, stopping acquiring the basic system information message; if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal device is partially identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, acquiring at least one basic system information block included in at least one system information block group identifier of at least one basic system information block of the source high-frequency cell and at least one system information block group identifier of at least one basic system information block of the target high-frequency cell.

In another possible implementation manner, the terminal device includes: a receiver, a transmitter, a memory, and a processor; wherein the memory stores a set of program codes therein, and the processor is configured to call the program codes stored in the memory to perform the following operations: when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, controlling the receiver to receive a basic system information message from a network device corresponding to the target high-frequency cell, wherein the basic system information message comprises at least one basic system information block and an identification of a system information block group of the at least one basic system information block, and each system information block group comprises at least one basic system information block with the same system information content as at least one cell of the target high-frequency cell within a set area; the processor further performs at least one of: if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal device is identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, controlling the receiver to stop acquiring the basic system information message; if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal device is the same as the system information block group identifier of at least one basic system information block of the target high-frequency cell, controlling the receiver to acquire at least one basic system information block included in at least one system information block group identifier of at least one basic system information block of the source high-frequency cell and at least one system information block group identifier of at least one basic system information block of the target high-frequency cell.

In still another aspect, a method for transmitting system information is provided, the method including: when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, the terminal device sends an acquisition request of system information of the target high-frequency cell to a target network device corresponding to the target high-frequency cell, wherein the acquisition request comprises an identifier of the source high-frequency cell, and at least one system information block of the source high-frequency cell corresponding to the identifier of the source high-frequency cell is stored in the target high-frequency cell; the terminal equipment receives a response message from the target network equipment; wherein, if the at least one system information block of the target high frequency cell is all the same as the at least one system information block of the source high frequency cell, the response message is used to indicate that the at least one system information block of the target high frequency cell is all the same as the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is partially identical to the at least one system information block of the source high frequency cell, the response message includes at least one system information block of the target high frequency cell that is different from the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is different from the at least one system information block of the source high frequency cell, the response message includes all system information blocks of the target high frequency cell.

In the implementation mode, each cell stores the system information block of the adjacent cell, and when the target network device receives the request for acquiring the system information block of the terminal device for switching, the system information block of the target high-frequency cell and the system information block of the source high-frequency cell are compared to be different, so that the repeated sending of the system information block can be reduced, and the signaling overhead between the network device and the terminal device can be saved.

In one implementation, the obtaining request further includes valid information of the system information block of the source high-frequency cell, where the valid information of the system information block of the source high-frequency cell is used to identify a version of the system information block of the source high-frequency cell.

In this implementation, one system information block may have multiple versions, and the system information content of the system information block of different versions is different.

In a possible implementation manner, the terminal device includes: a sending unit, configured to send, when a terminal device is switched from a source high frequency cell to a target high frequency cell, an acquisition request of system information of the target high frequency cell to a target network device corresponding to the target high frequency cell, where the acquisition request includes an identifier of the source high frequency cell, and the target high frequency cell stores therein at least one system information block of the source high frequency cell corresponding to the identifier of the source high frequency cell; a receiving unit, configured to receive a response message from the target network device; wherein, if the at least one system information block of the target high frequency cell is all the same as the at least one system information block of the source high frequency cell, the response message is used to indicate that the at least one system information block of the target high frequency cell is all the same as the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is partially identical to the at least one system information block of the source high frequency cell, the response message includes at least one system information block of the target high frequency cell that is different from the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is different from the at least one system information block of the source high frequency cell, the response message includes all system information blocks of the target high frequency cell.

In another possible implementation manner, the terminal device includes: a receiver, a transmitter, a memory, and a processor; wherein the memory stores a set of program codes therein, and the processor is configured to call the program codes stored in the memory to perform the following operations: when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, controlling the transmitter to transmit an acquisition request of system information of the target high-frequency cell to a target network device corresponding to the target high-frequency cell, wherein the acquisition request comprises an identifier of the source high-frequency cell, and at least one system information block of the source high-frequency cell corresponding to the identifier of the source high-frequency cell is stored in the target high-frequency cell; controlling the receiver to receive a response message from the target network device; wherein, if the at least one system information block of the target high frequency cell is all the same as the at least one system information block of the source high frequency cell, the response message is used to indicate that the at least one system information block of the target high frequency cell is all the same as the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is partially identical to the at least one system information block of the source high frequency cell, the response message includes at least one system information block of the target high frequency cell that is different from the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is different from the at least one system information block of the source high frequency cell, the response message includes all system information blocks of the target high frequency cell.

In still another aspect, a method for transmitting system information is provided, the method including: when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, a target network device corresponding to the target high-frequency cell receives an acquisition request of a system information block of the target high-frequency cell from the terminal device, wherein the acquisition request comprises an identifier of the source high-frequency cell; the target network equipment searches at least one stored system information block of the source high-frequency cell corresponding to the identifier of the source high-frequency cell; the target network device sends a response message to the terminal device, wherein if at least one system information block of the target high-frequency cell is the same as at least one system information block of the source high-frequency cell, the response message is used for indicating that at least one system information block of the target high-frequency cell is the same as at least one system information block of the source high-frequency cell; if the at least one system information block of the target high frequency cell is partially identical to the at least one system information block of the source high frequency cell, the response message includes at least one system information block of the target high frequency cell that is different from the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is different from the at least one system information block of the source high frequency cell, the response message includes all system information blocks of the target high frequency cell.

In one implementation, the obtaining request further includes valid information of a system information block of the source high-frequency cell, where the valid information of the system information block of the source high-frequency cell is used to identify versions of all system information blocks of the source high-frequency cell; the method further comprises the following steps: and the target network equipment searches at least one stored system information block of the source high-frequency cell corresponding to the identification of the source high-frequency cell and the valid information of the system information block of the source high-frequency cell, wherein at least one version of the system information block of the source high-frequency cell corresponding to the identification of the source high-frequency cell is stored in the target high-frequency cell.

In another implementation, the method further comprises: if the system information block of any cell adjacent to the target high-frequency cell is updated, the target network device receives and stores at least one updated system information block transmitted by the cell which generates the system information block update in a backhaul manner, wherein the at least one system information block comprises an identifier of the cell which generates the system information block update and/or effective information of the at least one system information block.

In this implementation, the network device may obtain more updated system information block groups of the cell through backhaul update between the network devices.

In another implementation manner, the sending, by the terminal device, an acquisition request of a system information block of a target high-frequency cell to a target network device corresponding to the target high-frequency cell includes: the terminal equipment sends a first random access message to the target network equipment through a special leader sequence of a Physical Random Access Channel (PRACH) or a special resource of the PRACH, wherein the special leader sequence of the PRACH or the special resource of the PRACH is used for indicating the target network equipment to send at least one system information block of the target high-frequency cell to the terminal equipment, and the first random access message comprises an identifier of the source high-frequency cell and/or effective information of the system information block of the source high-frequency cell; the terminal device receiving the response message from the target network device, including: and the terminal equipment receives a second random access message from the target network equipment, wherein the second random access message comprises a preamble sequence identification and the response message.

In another implementation manner, the sending, by the terminal device, an acquisition request of a system information block of a target high-frequency cell to a target network device corresponding to the target high-frequency cell includes: the terminal device sends a third random access message to the target network device, where the third random access message is used to instruct the target network device to issue at least one system information block of the target high-frequency cell to the terminal device, the third random access message includes an identifier of the source high-frequency cell and/or effective information of the system information block of the source high-frequency cell, and the third random access message is a first uplink transmission scheduled by the terminal device on a Physical Uplink Shared Channel (PUSCH); the terminal device receiving the response message from the target network device, including: and the terminal equipment receives a fourth random access message from the target network equipment, wherein the fourth random access message is a random access contention resolution message and comprises the response message.

In another implementation manner, the sending, by the terminal device, an acquisition request of a system information block of a target high-frequency cell to a target network device corresponding to the target high-frequency cell includes: the terminal device sends an unauthorized transmission message to the target network device, wherein the unauthorized transmission message is used for indicating the target network device to issue at least one system information block of the target high-frequency cell to the terminal device, and the unauthorized transmission message comprises an identifier of the source high-frequency cell and/or effective information of the system information block of the source high-frequency cell.

In one possible implementation, the network device includes: a receiving unit, configured to receive an acquisition request of a system information block of a target high frequency cell from a terminal device when the terminal device is handed over from a source high frequency cell to the target high frequency cell, where the acquisition request includes an identifier of the source high frequency cell; a sending unit, configured to search at least one stored system information block of the source high-frequency cell corresponding to the identifier of the source high-frequency cell; a sending unit, configured to send a response message to the terminal device, where if at least one system information block of the target high frequency cell is identical to at least one system information block of the source high frequency cell, the response message is used to indicate that the at least one system information block of the target high frequency cell is identical to the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is partially identical to the at least one system information block of the source high frequency cell, the response message includes at least one system information block of the target high frequency cell that is different from the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is different from the at least one system information block of the source high frequency cell, the response message includes all system information blocks of the target high frequency cell.

In another possible implementation manner, the network device includes: a receiver, a transmitter, a memory, and a processor; wherein the memory stores a set of program codes therein, and the processor is configured to call the program codes stored in the memory to perform the following operations: when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, controlling the receiver to receive an acquisition request of a system information block of the target high-frequency cell from the terminal device, wherein the acquisition request comprises an identifier of the source high-frequency cell; searching at least one stored system information block of the source high-frequency cell corresponding to the identifier of the source high-frequency cell; controlling the transmitter to transmit a response message to the terminal device, wherein if the at least one system information block of the target high-frequency cell is identical to the at least one system information block of the source high-frequency cell, the response message is used for indicating that the at least one system information block of the target high-frequency cell is identical to the at least one system information block of the source high-frequency cell; if the at least one system information block of the target high frequency cell is partially identical to the at least one system information block of the source high frequency cell, the response message includes at least one system information block of the target high frequency cell that is different from the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is different from the at least one system information block of the source high frequency cell, the response message includes all system information blocks of the target high frequency cell.

Yet another aspect of the present application provides a computer-readable storage medium having stored therein instructions, which when executed on a computer, cause the computer to perform the method of the above-described aspects.

Yet another aspect of the present application provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of the above-described aspects.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings required to be used in the embodiments or the background art of the present invention will be described below.

Fig. 1 is a schematic diagram of a system information transmission scheme under a high-frequency and low-frequency hybrid networking in the prior art;

fig. 2 is a schematic diagram of a communication system according to an embodiment of the present invention;

fig. 3 is an interaction diagram of a transmission method of system information in a high-frequency network according to an embodiment of the present invention;

fig. 4 is a schematic diagram of high frequency cell area distribution according to an example embodiment of the present invention;

fig. 5 is an interaction diagram of another method for transmitting system information in a high-frequency network according to an embodiment of the present invention;

fig. 6 is an interaction diagram of another method for transmitting system information in a high-frequency network according to an embodiment of the present invention;

fig. 7 is an interaction diagram of a method for transmitting system information in a high-frequency network according to another embodiment of the present invention;

fig. 8 is an interaction diagram illustrating an acquisition of a system information block when a connected terminal device switches cells;

fig. 9 is a schematic block diagram of a terminal device according to an embodiment of the present invention;

fig. 10 is a block diagram of a network device according to an embodiment of the present invention;

fig. 11 is a schematic block diagram of another terminal device according to an embodiment of the present invention;

fig. 12 is a schematic block diagram of another terminal device according to an embodiment of the present invention;

fig. 13 is a block diagram of another network device according to an embodiment of the present invention;

fig. 14 is a hardware architecture diagram of a terminal device according to an embodiment of the present invention;

fig. 15 is a diagram illustrating a hardware architecture of a network device according to an embodiment of the present invention;

fig. 16 is a hardware architecture diagram of another terminal device according to an embodiment of the present invention;

fig. 17 is a hardware architecture diagram of another terminal device according to an embodiment of the present invention;

fig. 18 is a hardware architecture diagram of another network device according to an embodiment of the present invention.

Detailed Description

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

The communication system related to the embodiment of the invention comprises network equipment and terminal equipment. The Communication System may be a Global System for Mobile communications (GSM), a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a Worldwide Interoperability for microwave Access (WiMAX) System, a Long Term Evolution (Long Term Evolution, LTE) System, a 5G Communication System (e.g., a new radio, NR) System, a Communication System in which Multiple Communication technologies are integrated (e.g., a Communication System in which an LTE technology and an NR technology are integrated), or a Communication System in which a subsequent Evolution is performed.

The terminal device in the present application is a device with a wireless communication function, and may be a handheld device with a wireless communication function, an in-vehicle device, a wearable device, a computing device or other processing device connected to a wireless modem, and the like. The terminal devices in different networks may be called different names, for example: user Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, Wireless communication device, User agent or User Equipment, cellular telephone, cordless telephone, Session Initiation Protocol (SIP) telephone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), terminal Equipment in a 5G network or future evolution network, and the like.

The network device in this application is a device deployed in a radio access network to provide wireless communication functions, including but not limited to: a Base Station (e.g., BTS (Base Transceiver Station, BTS), a Node B (NodeB, NB), an evolved Node B (eNB or eNodeB), a transmission Node or a Transceiver point (TRP or TP) in the NR system or a next generation Node B (gNB), a Base Station or a network device in a future communication network, a relay Station, an access point, a vehicle-mounted device, a wearable device, a Wireless Fidelity (Wi-Fi) Station, a Wireless backhaul Node, a small Station, a micro Station, and so on.

Fig. 2 is a schematic diagram of a communication system according to an embodiment of the present invention. Specifically, taking a network device as an example of a base station, in fig. 2, the base station 102 may include multiple antenna groups. Each antenna group can include one or more antennas, e.g., one antenna group can include

antennas

104 and 106, another antenna group can include

antennas

108 and 110, and additional groups can include

antennas

112 and 114. Different antenna groups in high frequency communication may be combined into different antenna planes (panels), for example, one antenna group forms one beam pointing in one direction and another antenna group forms another beam pointing in another direction, and more antennas may be needed to fit different device capabilities, so that additional groups may be provided with different numbers of antennas according to different device capabilities. Illustratively, 2 antennas are shown in fig. 2 for each antenna group, however, more or fewer antennas may be utilized for each group. Base station 102 can additionally include a transmitter chain and a receiver chain, each of which can be implemented as a number of components associated with signal transmission and reception, e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc., as will be appreciated by one skilled in the art.

Base station 102 may communicate with one or more terminal devices, such as terminal device 116 and terminal device 122. However, it is to be appreciated that base station 102 can communicate with any number of terminal devices similar to

terminal devices

116 or 122. As shown in fig. 2, terminal device 116 is in communication with

antennas

112 and 114, where

antennas

112 and 114 transmit information to terminal device 116 over forward link 118 and receive information from terminal device 116 over reverse link 120. In addition, terminal device 122 is in communication with

antennas

104 and 106, where

antennas

104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126. In a Frequency Division Duplex (FDD) system, forward link 118 can utilize a different Frequency band than that used by reverse link 120, and forward link 124 can utilize a different Frequency band than that used by reverse link 126, for example. Further, in a Time Division Duplex (TDD) system, forward link 118 and reverse link 120 can utilize a common frequency band and forward link 124 and reverse link 126 can utilize a common frequency band.

The area covered by each set of antennas and/or the area covered by the transmission that is designed for communication is referred to as a sector of base station 102. For example, antenna groups can be designed to communicate to terminal devices in a sector of the areas covered by base station 102. During communication by base station 102 with

terminal devices

116 and 122 over forward links 118 and 124, respectively, the transmitting antennas of base station 102 can utilize beamforming to improve signal-to-noise ratio of forward links 118 and 124. Moreover, mobile nodes in neighboring cells can experience less interference when base station 102 utilizes beamforming to transmit to

terminal devices

116 and 122 scattered randomly through an associated coverage, as compared to a base station transmitting through a single antenna to all its access terminal devices.

Base station 102, terminal device 116, or terminal device 122 may be a wireless communication transmitting apparatus and/or a wireless communication receiving apparatus at a given time. When sending data, the wireless communication sending device may encode the data for transmission. Specifically, the wireless communication transmitting apparatus can acquire, for example, generate, receive from other communication apparatuses, or store in a memory, a certain number of data bits to be transmitted to the wireless communication receiving apparatus through the channel. Such data bits may be contained in a transport block or transport blocks of data, which may be segmented to produce multiple code blocks.

The embodiment of the invention provides a method and a device for transmitting system information, which are characterized in that other system information blocks with the same system information content as a cell of a target high-frequency cell in a set area range are combined into a system information block group, when the terminal equipment performs cell switching, the terminal equipment receives basic system information of target network equipment, the basic system information message carries the identification of the system information block group, the terminal equipment acquires other system information blocks which are included in the system information block group with the identification different from that of the system information block group of the target high-frequency cell according to the difference between the identification of the system information block group of the source high-frequency cell and the identification of the system information block group of the target high-frequency cell, therefore, in the high-frequency networking, the terminal equipment does not need to acquire other system information blocks included in all the system information block groups of the target high-frequency cell, and the signaling overhead between the terminal equipment and the network equipment is saved.

Referring to fig. 3, an interaction diagram of a method for transmitting system information according to an embodiment of the present invention is shown, where the method includes the following steps:

s101, broadcasting basic system information by network equipment corresponding to the target high-frequency cell.

The SIB mainly includes (1) a Master Information Block (MIB): basic parameters required when the terminal equipment is initially accessed to a network; (2) SIB 1: cell access and cell selection related parameters and time domain scheduling information of other SIBs; (3) SIB 2: common radio resource configuration information; (4) SIB 3-SIB 8 for controlling parameters of cell reselection of same frequency, Inter-frequency and Inter-RAT; (5) SIB 9: a home base station name; (6) SIB 10-SIB 12: earthquake and tsunami warning message; and the like, of course, the embodiment does not limit the number of SIBs and the function of each SIB, and there may be corresponding definitions according to the corresponding communication system. In this embodiment, the system information blocks are divided into basic system information blocks (e.g., minimum SIBs) and other system information blocks (e.g., other SIBs), where the SIs are organized in the form of SIBs, i.e., the minimum SIBs are SIBs in the minimum SI and the other SIBs are SIBs in the other SI. The basic system information block may include MIB, SIB1, and SIB2, but is not limited to the system information block included in the basic system information block. The other system information blocks are system information blocks other than the basic system information block. The basic system information block is system information which is periodically broadcast and transmitted.

The application scenario of this embodiment is a high-frequency networking scenario. Fig. 4 is a schematic diagram of high frequency cell area distribution according to an example embodiment of the present invention. As shown in fig. 4, for the high frequency network, dividing the area into a set of cells within a set area where the contents of other system information blocks are mostly the same, for example, an area 1 includes a cell1, a cell2 and a cell3, where each cell includes one or more network devices, and most other system information blocks in the three cells are the same, and similarly, an area 2 includes a cell4 and a cell5, and most other system information blocks in the two cells are the same (in practical cases, the number of cells included in one area may be more). The set area range refers to an area of a circle formed by a custom set distance as a radius, or an adjacent area, and may be a Tracking Area (TA). If the area is set as TA, the area identifier broadcasted in the minimumSIB is TAC (tracking area code).

For example, the area 1 includes a cell1, a cell2, and a cell3, wherein SIB X (X is a positive integer) and SIB (X +1) in other SIB of the cell1 may be used for the cell2, that is, SIB X and SIB (X +1) in other SIB of the cell2 may be the same as system information content of current SIB X and SIB (X +1) in the cell1 for a certain period of time, and then the SIB X and SIB (X +1) are identified (other group id) as one system information block group (other SIB group). If there are multiple cells in the area that may have multiple identical other SIBs at the same time, these multiple other SIBs may be used as one system information block group. The system information block groups with the same system information content in the set area range have the same identification, and the system information block groups with different system information content in the set area range have different identifications. It should be noted that, in this embodiment, other SIB groups of cells closer to each other in different areas (e.g., cells in adjacent areas, cells in different areas but with a certain distance therebetween, cells with a certain number of cells therebetween in different areas, etc.) cannot be repeated, that is, the same other SIB group id corresponds to the same SIB content; the other SIB group id of the cells in different areas beyond the above distance may be repeated, i.e. the same other SIB group id may correspond to different SIB content. The other SIB in the other SIB group can also include version information of the other SIB, and for the same other SIB, the version is different, and the system information content may be different, so the corresponding other SIB group id is also different. The identification of the other SIB groups in a region can be seen in Table 1, and it can be seen that each identified other SIBgroup can be used by at least two cells in the region. Each network device in the area needs to know the available other SIB group and its corresponding other SIB group id of each cell within the coverage of the network device. It should be noted that the partition of the areas and the mapping relationship between the other SIB group id and the other SIB group and their versions in each area may be predefined by a protocol, which may be fixed or may be dynamically updated.

Optionally, the other SIB for each cell in a set area may be identified, only the other SIB for other cells in the set area in the cell may be identified, where the identification may be 1,2, …, M (M is a positive integer), or other identification manners.

Further, this embodiment is specifically a scenario in which the terminal device is switched from the source high frequency cell to the target high frequency cell. The network device corresponding to the target high-frequency cell broadcasts the basic system information message, the target high-frequency cell and the source high-frequency cell are generally in a set area range, and the terminal device can receive the basic system information message from the network device corresponding to the target high-frequency cell. Wherein the basic system information message comprises an identification (other SIB group id) of a system information block group (other SIB group) of at least one other system information block (other SIB) and at least one basic system information block (minimum SIB), each of the system information block groups comprising at least one other system information block having the same system information content as at least one cell of the target high frequency cell within a set area range, the at least one other system information block being a system information block other than the basic system information block. The terminal device may store an identification of the system information block set of the target high frequency cell.

As an alternative to S101, the basic system information message may also only include the identification of the system information block group of the at least one other system information block, but not include the at least one basic system information block.

TABLE 1 example of other SIB group id list in one area

The terminal device further performs at least one of the following steps S102 to S102 ″:

s102, if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is identical to the identifier of the at least one system information block group of the target high frequency cell, the terminal device does not need to acquire at least one other system information block included in any system information block group of the target high frequency cell;

s102', if the identifier of the at least one system information block group of the source high frequency cell stored in the terminal device is partially the same as the identifier of the at least one system information block group of the target high frequency cell, the terminal device sends a first acquisition request to the network device, where the first acquisition request is used to request to acquire at least one other system information block included in a system information block group that is different from the identifier of the at least one system information block group of the target high frequency cell;

s102 ″, if the identifier of the at least one system information block group of the source high frequency cell stored in the terminal device is different from the identifier of the at least one system information block group of the target high frequency cell, the terminal device sends a second acquisition request to the network device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell.

When the terminal equipment wants to be switched to a target high-frequency cell, firstly comparing the identifier of the system information block group of the source high-frequency cell with the identifier of the system information block group of the target high-frequency cell, and if the comparison result shows that the identifier of the system information block group of the source high-frequency cell is the same as the identifier of the system information block group of the target high-frequency cell, the terminal equipment does not need to acquire the other SIB included in any system information block group of the target high-frequency cell when being switched to the target high-frequency cell, so that the signaling overhead between the terminal equipment and the network equipment is greatly saved, and the sending of the repeated other SIB is greatly reduced; if the comparison result shows that the identification of the system information block group of the source high-frequency cell is partially the same as the identification of the system information block group of the target high-frequency cell, the terminal equipment only needs to acquire the other SIB included in the system information block group of the source high-frequency cell, which has the identification different from that of the system information block group of the target high-frequency cell, so that the signaling overhead between the terminal equipment and the network equipment can be saved to a certain extent, and the transmission of the repeated other SIB is reduced to a certain extent; if the comparison result shows that the identity of the system information block group of the source high frequency cell is different from the identity of the system information block group of the target high frequency cell, the terminal device needs to acquire the other SIB included in all the system information block groups of the target high frequency cell.

The network device further performs at least one of the following steps S103 to S103':

s103, if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is partially the same as the identifier of the at least one system information block group of the target high frequency cell, the network device receives a first acquisition request from the terminal device, where the first acquisition request is used to request to acquire at least one other system information block included in a system information block group of the source high frequency cell of the terminal device, where the identifier of the at least one system information block group of the source high frequency cell is partially different from the identifier of the at least one system information block group of the target high frequency cell, and the network device sends the requested at least one other system information block included in a system information block group of which the identifier is partially different to the terminal device;

s103', if the identifier of the at least one system information block group of the source high frequency cell stored in the terminal device is different from the identifier of the at least one system information block group of the target high frequency cell, the network device receives a second acquisition request from the terminal device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell, and the network device sends the at least one other system information block included in all system information block groups of the target high frequency cell to the terminal device.

Correspondingly, when receiving different acquisition requests of the terminal equipment, the network equipment sends the other SIB included in the system information block group requested by the acquisition request to the terminal equipment according to the indication of the acquisition request. Especially, as in S103, the first acquisition request only requests to acquire the other SIB included in the system information block group having the identifier different from the identifier of the system information block group of the target high frequency cell, which saves signaling overhead between the network device and the terminal device to a certain extent.

Optionally, when the network device sends the other SIB included in the system information block group requested by the acquisition request to the terminal device, the network device may further carry an identifier of the system information block group, so that the terminal device stores the other SIB included in the system information block group of the target high-frequency cell according to the identifier of the system information block group, and thus when the terminal device is switched to the target high-frequency cell or a cell having the same system information block group as the target high-frequency cell, the terminal device does not need to repeatedly acquire the other SIB included in the system information block groups. It should be noted that, the system information block requested by the terminal device is a system information block that the terminal device needs to acquire, and at least one other SIB corresponding to the other SIB group id broadcasted by the network device may also be the other SIB that the terminal device needs to acquire (because the protocol may define which other SIBs the terminal device needs to acquire, and other SIB terminal devices may not acquire).

According to the system information transmission method provided by the embodiment of the invention, other system information blocks having the same system information content with the cell of the target high-frequency cell in the set area range form a system information block group, when the terminal equipment performs cell switching, the terminal equipment receives basic system information of target network equipment, the basic system information message carries the identification of the system information block group, the terminal equipment acquires other system information blocks which are included in the system information block group with the identification different from that of the system information block group of the target high-frequency cell according to the difference between the identification of the system information block group of the source high-frequency cell and the identification of the system information block group of the target high-frequency cell, therefore, in the high-frequency networking, the terminal equipment does not need to acquire other system information blocks included in all the system information block groups of the target high-frequency cell, and the signaling overhead between the terminal equipment and the network equipment is saved.

Referring to fig. 5, an interaction diagram of another method for transmitting system information according to an embodiment of the present invention is shown, where the method includes the following steps:

s201, if any system information block included in any system information block group of any cell adjacent to the target high-frequency cell is updated, the network device of the target high-frequency cell receives an identifier of at least one updated system information block group transmitted by the cell that generates the update of the other system information block.

If the area of the set range is larger or the number of cells included in the area is larger (many cells in the area are not adjacent), each cell in the area may only carry the other SIB group id of the identified other SIB group currently included in the area and the neighboring cell in the same manner, which requires that each neighboring cell in the area shares the other SIB group id of the identified other SIB group currently included in the area, that is, the network device of each cell in the area stores the other SIB group id of the identified other SIB group currently included in the neighboring cell.

When the identified other SIB group contained in the cell has an update, the updated other SIB group id of the neighboring network devices in the area is notified through a backhaul (backhaul) transmission between the network devices, or the updated other SIB group id is notified to the neighboring network devices through a central network controller or other network device.

S202, the network device compares the identifier of at least one other system information block group of the target high-frequency cell with the identifier of at least one updated system information block group of the neighboring cell to obtain an identifier of at least one system information block group with the same identifier, and broadcasts the identifier of at least one system information block group with the same identifier in a basic system information message.

The network equipment corresponding to each cell in the area knows the other SIB group id of the identified other SIB group currently contained in the adjacent cell, compares the other SIB group id with the other SIB group id of the identified other SIB group currently contained in the network equipment, and broadcasts only the other SIB group id having the same other SIB group as the adjacent cell.

Meanwhile, in this way, when the content of the other SIB group in one cell is updated, the other SI id carried when the minimum SIB is broadcast in a plurality of neighboring cells may be changed, thereby triggering a system information block update procedure of the plurality of cells (paging notifies the terminal equipment in the TA area of the change of the system message). To avoid this, the system information update procedure may not be triggered when the other SI id carried when only the minimum SIB is broadcast in the cell changes without any change in other system information content. It should be noted that steps S201 to S203 may also be optional steps, and the target network device may obtain the update of the identifier of the system information block group of the other cell in other manners.

The present embodiment is specifically a scenario in which a terminal device switches from a source high frequency cell to a target high frequency cell. The network device corresponding to the target high-frequency cell broadcasts the basic system information message, and the terminal device can receive the basic system information message from the network device corresponding to the target high-frequency cell. Wherein the basic system information message comprises an identification (other SIB group id) of a system information block group (other SIB group) of at least one other system information block (other SIB) and at least one basic system information block (minimum SIB), each of the system information block groups comprising at least one other system information block having the same system information content as at least one cell of the target high frequency cell within a set area range, the at least one other system information block being a system information block other than the basic system information block. The terminal device may store an identification of the system information block set of the target high frequency cell.

The terminal device further performs at least one of the following steps S203 to S203' ″:

s203, if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is all the same as the identifier of the at least one system information block group of the target high frequency cell, the terminal device does not need to obtain at least one other system information block included in any system information block group of the target high frequency cell;

s203', if the area identifier of the source high frequency cell is different from the area identifier of the target high frequency cell, the terminal device sends a second acquisition request to the network device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell;

s203 ″, if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell stored in the terminal device is partially the same as the identifier of the at least one system information block group of the target high frequency cell, the terminal device sends a first acquisition request to the network device, where the first acquisition request is used to request to acquire at least one other system information block included in a system information block group different from the identifier of the at least one system information block group of the target high frequency cell;

s203 ″, if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell stored in the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends the second acquisition request to the network device.

The main difference between this embodiment and the embodiment shown in fig. 3 is that, in this embodiment, the basic system information message further includes an area identifier of the target high frequency cell. As shown in fig. 4, each area within the setting area is numbered (system information area id), the number may be 1,2, …, N (N is a positive integer), the system information block groups having the same system information content within the setting area range have the same identifier, and the system information block groups having different system information content within the setting area range have different identifiers. Alternatively, it is satisfied that the system information area ids of the cells in one area are the same, and the system information area ids of the neighboring areas (or the areas closer in distance) are different. Alternatively, the area identification beyond the set area range may be repeated. Because the contents of other system information blocks broadcast by cells in a set area range are mostly the same, whereas the contents of other system information blocks of cells in different area ranges are generally different, the terminal device first compares whether the area identifiers of the source high-frequency cell and the target high-frequency cell are the same before comparing the identifiers of the system information block groups of the source high-frequency cell and the target high-frequency cell, if the comparison result is different, it is not necessary to further compare whether the identifiers of the system information block groups of the source high-frequency cell and the target high-frequency cell are the same, and the terminal device needs to acquire the other SIB included in all the system information block groups of the target high-frequency cell from the network device; if the comparison result is the same, corresponding processing is performed according to whether the identifiers of the system information block groups of the source high-frequency cell and the target high-frequency cell are all the same, partially the same, or all different, and the processing procedure is the same as S102 to S102 ″ of the embodiment shown in fig. 3, which is not described herein again.

The network device further performs at least one of the following steps S204 to S204 ″:

s204, if the area identifier of the source high frequency cell is different from the area identifier of the target high frequency cell, the network device receives a second acquisition request from the terminal device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell, and the network device sends the at least one other system information block included in all system information block groups of the target high frequency cell to the terminal device;

s204', if the area identification of the source high-frequency cell is the same as the area identification of the target high-frequency cell, and if the identity of the at least one system information block group of the source high frequency cell stored by the terminal device is partially the same as the identity of the at least one system information block group of the target high frequency cell, the terminal device sends the first acquisition request to the network device, where the first acquisition request is used to request to acquire at least one other system information block included in at least one system information block group of the terminal device, where the identity of the at least one system information block group of the source high frequency cell is partially different from the identity of the at least one system information block group of the target high frequency cell, and the network device sends the requested at least one other system information block included in the system information block group with the partially different identification to the terminal device;

s204 ″, if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell stored in the terminal device is different from the identifier of the at least one system information block group of the target high frequency cell, the terminal device sends the second acquisition request to the network device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell, and the network device sends the at least one other system information block included in all system information block groups of the target high frequency cell to the terminal device.

For a network device, one of two acquisition requests is received: that is, the process of acquiring the other SIB included in all system information block groups or acquiring the other SIB included in the system information block group with different identifiers of the system information block groups of the source high frequency cell and the target high frequency cell is the same as S103 to S103' in the embodiment shown in fig. 3, and is not described herein again. It should be noted that, the system information block requested by the terminal device is a system information block that the terminal device needs to acquire, and at least one other SIB corresponding to the other SIB group id broadcasted by the network device may also be the other SIB that the terminal device needs to acquire (because the protocol may define which other SIBs the terminal device needs to acquire, and other SIB terminal devices may not acquire).

According to the method for transmitting system information provided by the embodiment of the present invention, when a terminal device performs cell handover, the terminal device receives a basic system information message of a target network device, where the basic system information message carries an identifier of the system information block and an identifier of a target high frequency cell, and the terminal device obtains other system information blocks included in a system information block group having a different identifier from the system information block group of the target high frequency cell according to a difference between the identifier of a source high frequency cell and the identifier of the target high frequency cell and a difference between the identifier of the system information block group of the source high frequency cell and the identifier of the system information block group of the target high frequency cell, so that in a high frequency network, the terminal device does not need to obtain other system information blocks included in all the system information block groups of the target high frequency cell And the signaling overhead between the terminal equipment and the network equipment is saved.

Referring to fig. 6, an interaction diagram of another method for transmitting system information according to an embodiment of the present invention is shown, where the method includes the following steps:

s301, when a terminal device is handed over from a source high frequency cell to a target high frequency cell, the terminal device receives a basic system information message from a network device corresponding to the target high frequency cell, where the basic system information message includes at least one basic system information block and an identifier of a system information block group of the at least one basic system information block, and each system information block group includes at least one basic system information block having the same system information content as at least one cell of the target high frequency cell within a set area range.

In this embodiment, the system information blocks are divided into basic system information blocks (minimum SIBs) and other system information blocks (other SIBs). The basic system information block may include MIB, SIB1, and SIB2, but is not limited to the system information block included in the basic system information block. The other system information blocks are system information blocks other than the basic system information block. The basic system information block is system information which is periodically broadcast and transmitted.

The application scenario of this embodiment is a high-frequency networking scenario. Fig. 4 is a schematic diagram of high frequency cell area distribution according to an example embodiment of the present invention. As shown in fig. 4, for the high frequency network, dividing the area into a set of cells within a set area where the contents of the basic system information blocks are mostly the same, for example, an area 1 includes a cell1, a cell2 and a cell3, where each cell includes one or more network devices, most of the basic system information blocks in the three cells are the same, and similarly, an area 2 includes a cell4 and a cell5, and most of the basic system information blocks in the two cells are the same (in practical cases, the number of cells included in one area may be more). The set area range refers to an area of a circle formed by a custom set distance as a radius, or an adjacent area, and may be a Tracking Area (TA). If the area is set as TA, the area identifier broadcast in the minimumSIB is TAC.

For example, the area 1 includes a cell1, a cell2, and a cell3, wherein SIB X (X is a positive integer) and SIB (X +1) in the minimum SIB of the cell1 may be used for the cell2, that is, SIB X and SIB (X +1) in the minimum SIB of the cell2 may be the same as system information content of current SIB X and SIB (X +1) in the cell1 for a certain period of time, and then SIB X and SIB (X +1) are identified as one system information block group (minimum group id). If there are multiple cells in the area that may have multiple identical minimum SIBs at the same time, the multiple minimum SIBs may be used as one system information block group. The minimumSIB group id in the same region can not be repeated, and the minimumSIB group id in different regions can be repeated. The minimum SIB in the minimum SIB group may further include version information of the minimum SIB, and for the same minimum SIB, the version is different and the system information content may be different.

Further, this embodiment is specifically a scenario in which the terminal device is switched from the source high frequency cell to the target high frequency cell. The network device corresponding to the target high-frequency cell broadcasts the basic system information message, and the terminal device can receive the basic system information message from the network device corresponding to the target high-frequency cell. Wherein the basic system information message comprises at least one basic system information block (minimum SIB) and an identification (minimum SIB group id) of a system information block group (minimum SIB group) of the at least one basic system information block (minimum SIB), each of the system information block groups comprising at least one basic system information block having the same system information content as at least one cell of the target high frequency cell within a set area. The terminal device may store an identification of the system information block set of the target high frequency cell.

The terminal device further performs at least one of the following steps S302 and S302':

s302, if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal equipment is the same as the identifier of the at least one system information block group of the target high-frequency cell, the terminal equipment stops acquiring the basic system information message;

s302', if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is partially the same as the identifier of the at least one system information block group of the target high frequency cell, the terminal device obtains at least one basic system information block included in at least one system information block group of a portion where the identifier of the at least one system information block group of the source high frequency cell is different from the identifier of the at least one system information block group of the target high frequency cell.

When the terminal equipment is to be switched to a target high-frequency cell, firstly comparing the identifier of the system information block group of the basic system information block of the source high-frequency cell with the identifier of the system information block group of the basic system information block of the target high-frequency cell, and if the comparison result shows that the identifier of the system information block group of the basic system information block of the source high-frequency cell is the same as the identifier of the system information block group of the basic system information block of the target high-frequency cell, the terminal equipment can stop obtaining the basic system information message after being switched to the target high-frequency cell; if the result of the comparison is that the identity of the system information block group of the basic system information block of the source high frequency cell is the same as the identity part of the system information block group of the basic system information block of the target high frequency cell, the terminal device only needs to acquire the minimum SIB included in the system information block group identifying the different parts, acquire the basic system message including the identity of the system information block group and/or the basic system information block of the target high frequency cell, and/or demodulate the acquired basic system information block. Therefore, in high-frequency networking, the terminal equipment does not need to acquire all basic system information blocks included in the basic system information message all the time, and the cruising ability of the terminal equipment is improved.

Optionally, the terminal device may further perform region determination on the source high frequency cell and the target high frequency cell, and S302' may be replaced by the terminal device to perform at least one of the following steps:

if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is all the same as the identifier of the at least one system information block group of the target high-frequency cell, the terminal device stops acquiring the basic system information message;

if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is partially the same as the identifier of the at least one system information block group of the target high-frequency cell, the terminal device obtains at least one basic system information block included in the at least one system information block group of the source high-frequency cell, the identifier of the at least one system information block group of the source high-frequency cell being different from the identifier of the at least one system information block group of the target high-frequency cell;

and if the area identifier of the source high-frequency cell and the area identifier of the target high-frequency cell are the same, the terminal equipment acquires at least one basic system information block included in all the system information block groups.

According to the transmission method of the system information provided by the embodiment of the invention, the basic system information blocks which have the same system information content with the cells of the target high-frequency cell in the set area range form a system information block group, when the terminal equipment performs cell switching, the terminal equipment receives basic system information of target network equipment, the basic system information message carries the identification of the system information block group, the terminal equipment determines whether to continue to acquire the basic system information block included in the system information block group of the different part of the basic system message or the monitoring identification according to the difference between the identification of the system information block group of the source high-frequency cell and the identification of the system information block group of the target high-frequency cell, therefore, in high-frequency networking, the terminal equipment does not need to acquire all basic system information blocks included in the basic system information message all the time, and the cruising ability of the terminal equipment is improved.

Referring to fig. 7, an interaction diagram of another method for transmitting system information according to an embodiment of the present invention is shown, where the method includes the following steps:

s401, if the system information block of any cell adjacent to the target high-frequency cell is updated, the target network device receives at least one updated system information block transmitted in a cell backhaul process where the system information block is updated, where the at least one system information block includes an identifier of the cell where the system information block is updated, and/or valid information of the at least one system information block.

S402, the target network device stores the updated at least one system information block transmitted by the cell backhaul generating the system information block update.

In this embodiment, the system information blocks are divided into basic system information blocks (minimum SIBs) and other system information blocks (other SIBs). The basic system information block may include MIB, SIB1, and SIB2, but is not limited to the system information block included in the basic system information block. The other system information blocks are system information blocks other than the basic system information block. The basic system information block is system information which is periodically broadcast and transmitted. The system information block in this embodiment may be referred to as other SIB.

When the SIB contained in the adjacent cell is updated, transmitting the updated SIB(s) to the network device corresponding to the adjacent cell through backhaul (backhaul) transmission between the network devices, or transmitting the updated SIB(s) to the network device corresponding to the adjacent cell through a central network controller or other network devices. The SIB includes the identity of the cell and may also include valid information of the SIB. The valid information of the SIB of a cell is used to identify the versions of all SIBs of the cell, and if the same SIB has different versions, the system information content is different. The update and store operations are optional, so steps S401, S402 are indicated in the figure with dashed lines.

S403, when a terminal device is switched from a source high frequency cell to a target high frequency cell, the terminal device sends an acquisition request of system information of the target high frequency cell to a target network device corresponding to the target high frequency cell, where the acquisition request includes an identifier of the source high frequency cell and/or valid information of a system information block of the source high frequency cell, and the target high frequency cell stores at least one system information block of the source high frequency cell corresponding to the identifier of the source high frequency cell.

When the terminal device is switched from the source high-frequency cell to the target high-frequency cell, the terminal device needs to acquire system information of the target high-frequency cell to prepare for subsequent data transmission, and therefore, the terminal device sends an acquisition request of the system information of the target high-frequency cell to target network equipment corresponding to the target high-frequency cell, wherein the acquisition request includes an identifier of the source high-frequency cell and/or effective information of a system information block of the source high-frequency cell. At this time, the terminal device is generally in an idle (idle) state/an inactive (inactive) state.

S404, the target network device searches at least one stored system information block of the source high-frequency cell corresponding to the identifier of the source high-frequency cell and/or the valid information of the system information block of the source high-frequency cell, wherein at least one version of the system information block of the source high-frequency cell corresponding to the identifier of the source high-frequency cell is stored in the target high-frequency cell.

In the foregoing step, the target high-frequency cell has already acquired the system information blocks of the neighboring cells through the backhaul transmission of the network devices corresponding to the neighboring cells, so according to the identifier of the source high-frequency cell and/or the effective information of the SIB of the source high-frequency cell, one or more SIBs of the source high-frequency cell corresponding to the identifier of the source high-frequency cell and/or the effective information of the SIB of the source high-frequency cell can be found.

S405, the target network device sends a response message to the terminal device, wherein if at least one system information block of the target high-frequency cell is the same as at least one system information block of the source high-frequency cell, the response message is used for indicating that at least one system information block of the target high-frequency cell is the same as at least one system information block of the source high-frequency cell; if the at least one system information block of the target high frequency cell is partially identical to the at least one system information block of the source high frequency cell, the response message includes at least one system information block of the target high frequency cell that is different from the at least one system information block of the source high frequency cell; if the at least one system information block of the target high frequency cell is different from the at least one system information block of the source high frequency cell, the response message includes all system information blocks of the target high frequency cell.

The target network equipment compares the searched one or more SIBs of the source high-frequency cell with one or more SIBs of the target high-frequency cell one by one, if the comparison result is that the two SIBs are all the same, the target network equipment sends a response message to the terminal equipment, and the response message only needs to indicate that the one or more SIBs of the source high-frequency cell are all the same as the one or more SIBs of the target high-frequency cell, so that repeated sending of system information blocks is greatly reduced, and signaling overhead between the network equipment and the terminal equipment is greatly saved; if the comparison result is that the two parts are partially the same, the response message only needs to carry different SIBs in the SIBs of the target high-frequency cell and the high-frequency cell of the source, thereby reducing the repeated sending of the system information block to a certain extent and saving the signaling overhead between the network equipment and the terminal equipment to a certain extent; if the comparison result is different, the response message needs to carry all the SIBs of the target high-frequency cell.

In specific implementation, the idle/inactive terminal device may send a system information block acquisition request to the target network device in the following three ways:

1. the terminal device sends an acquisition request of a system information block of the target high-frequency cell to the target network device corresponding to the target high-frequency cell, and the acquisition request comprises the following steps: the terminal device sends a first Random Access message to the target network device through a dedicated preamble sequence of a Channel (e.g., a Physical Random Access Channel (PRACH)) for performing Random Access or a PRACH dedicated resource, where the dedicated preamble sequence of the PRACH or the PRACH dedicated resource is used to instruct the target network device to issue at least one system information block of the target high-frequency cell to the terminal device, and the first Random Access message includes an identifier of the source high-frequency cell and/or valid information of the system information block of the source high-frequency cell; the terminal device receiving the response message from the target network device, including: and the terminal equipment receives a second random access message from the target network equipment, wherein the second random access message comprises a preamble sequence identification and the response message.

Specifically, the random access message 1 is a preamble sequence (preamble) sent by the terminal device to the network device in the physical random access channel. The terminal equipment sends a system information block acquisition request through the PRACH dedicated preamble or PRACH dedicated resource through the random access message 1. The special preamble is different from the traditional preamble, the special preamble is specially used for requesting system information and is not used for initiating random access, and the special preamble can be designed to correspond to the request of one or more specific SIBs; or the system information block acquisition request is sent through the dedicated resources of the PRACH, that is, a dedicated part is marked in the PRACH and used for sending the system information block acquisition request, but not used for random access, and if the network device receives the preamble in this part of the PRACH resources, it is considered that the terminal device requests the system information block instead of initiating the random access, and the specific dedicated resources of the PRACH can be designed to correspond to the request of the specific SIB or SIBs.

When the terminal device sends a system information block acquisition request through the PRACH dedicated preamble or the PRACH dedicated resource, the identifier of the source high frequency cell/the effective information of the system information block of the source high frequency cell is carried in the random access message 1, specifically, the effective information of the identifier of the source cell/the system information block of the source high frequency cell may be time division multiplexed with the preamble, may also be frequency division multiplexed with the preamble, or may be combined in other manners, without limitation.

After receiving a system information block acquisition request sent by a dedicated preamble or a dedicated resource of the PRACH, the target network device sends a corresponding system information block to the terminal device, and may carry a corresponding preamble identity, where the preamble identity is used for the terminal device to identify the system information block sent to the terminal device, that is, the terminal device determines whether the received preamble identity corresponds to the preamble sent by the terminal device, and if so, the terminal device regards that the received preamble identity is sent to the system information block of the terminal device. Specifically, after the terminal device sends the System Information block acquisition request through the dedicated preamble or PRACH dedicated resource, a Channel (e.g., Physical Downlink Control Channel (PDCCH)) scrambled by a System Information radio network Temporary Identity (SI-RNTI) for Downlink Control is blindly detected in the corresponding time-frequency resource, so as to receive the System Information block sent to the terminal device at the corresponding resource location. The corresponding time frequency resource may be a segment of time frequency resource having a predetermined relationship with the time frequency resource for the terminal device to send the system information block acquisition request, for example, two subframes after 3 subframes are separated from the system information block acquisition request sending subframe, the corresponding time frequency resource may also be obtained by the terminal device from the scheduling information of the Other SIB in the minimum SIB, the corresponding time frequency resource may be a segment of time window starting from a certain subframe/slot, and the length of the time window is configurable; different source cell identifications and different dedicated preamble/preamble sending time-frequency resources can correspond to different SI-RNTIs, so that terminal equipment which sends different source cell identifications and different dedicated preamble/preamble sending time-frequency resources can receive system information of different versions.

2. The terminal device sends an acquisition request of a system information block of the target high-frequency cell to the target network device corresponding to the target high-frequency cell, and the acquisition request comprises the following steps: the terminal device sends a third random access message to the target network device, where the third random access message is used to instruct the target network device to issue at least one system information block of the target high-frequency cell to the terminal device, the third random access message includes an identifier of the source high-frequency cell and/or valid information of the system information block of the source high-frequency cell, and the third random access message is a first Uplink transmission scheduled by the terminal device on a Channel (e.g., a Physical Uplink Shared Channel (PUSCH)) used for Uplink data transmission; the terminal device receiving the response message from the target network device, including: and the terminal equipment receives a fourth random access message from the target network equipment, wherein the fourth random access message is a random access contention resolution message and comprises the response message.

Specifically, the terminal device sends a system information block acquisition request through a random access message 3, where the random access message 3 is uplink transmission first scheduled by the terminal device on a PUSCH and may include a Radio Resource Control (RRC) link request, a tracking area update or a scheduling request, and the like. The terminal device carries the identifier of the source cell in the system information block acquisition request. The message 4 in the random access process is a contention resolution message sent by the network device on a Channel (e.g., a Physical Downlink Shared Channel (PDSCH)) used for sending Downlink data, and the network device sends a corresponding system information block to the terminal device in the message 4 in the random access process and carries an identifier of the terminal device, so that the terminal device can identify the system information block sent to itself. The specific process of sending and acquiring the system information block may refer to mode 1.

3. The terminal device sends an acquisition request of a system information block of the target high-frequency cell to the target network device corresponding to the target high-frequency cell, and the acquisition request comprises the following steps: the terminal device sends an unauthorized transmission message to the target network device, wherein the unauthorized transmission message is used for indicating the target network device to issue at least one system information block of the target high-frequency cell to the terminal device, and the unauthorized transmission message comprises an identifier of the source high-frequency cell and/or effective information of the system information block of the source high-frequency cell.

Specifically, the terminal device in the Inactive state may also send a system information block acquisition request to the target network device in a Grant-Free (Grant-Free) manner. The Grant-Free transmission scheme refers to that in a Public Land Mobile Network (PLMN), the terminal device does not need to request the Network device to allocate and indicate transmission resources in a scheduling request manner. Specifically, the terminal device may perform data transmission on the designated time-frequency resource according to different characteristics of the transmission data, such as requirements on transmission delay or reliability, by using a method that can be supported by the time-frequency resource and includes a code resource, a pilot resource, a modulation and coding scheme, a feedback category, a diversity method, and the like, so as to reduce network signaling overhead and/or reduce transmission delay. The terminal device carries the identification of the source cell/the effective information of the system information block of the source cell in the request, the network device sends the corresponding system information block to the terminal device after receiving the request, and carries the identification of the terminal device, so that the terminal device can identify the system information block sent to the terminal device. The specific process of sending and acquiring the system information block may refer to mode 1.

In addition, if the terminal device is in a connected (connected) state, and the terminal device is switched from the source cell to the target cell, the target cell already knows the identifier of the source cell, the source cell can notify the target network device corresponding to the target cell of the effective information of the system message block of the source cell through a signaling in the switching process, an interaction diagram for acquiring the system message block when the terminal device in the connected state switches the cell is shown in fig. 8, and a specific interaction flow is as follows:

step 1 and step 2: the terminal equipment reports the measurement report to the source network equipment, and the source network equipment determines whether to switch the terminal equipment to other network equipment or not, and the process can refer to the related flow of the prior art;

and step 3: the source network equipment initiates a switching request to the target network equipment and carries effective information (such as Value Tag) of a system information block of a source cell;

and 4, step 4: the target cell carries out access control and wireless resource allocation on the terminal equipment, and judges whether the system information block of the cell is the same as the system information block of the source cell or not according to the received effective information of the system information block of the source cell and the stored system information block of the adjacent cell;

and 5: the target network device replies a switching confirmation message to the source network device, wherein the message comprises an admission result and wireless resource configuration information, if the target network device judges that the local cell system information required by the terminal device is different from the source cell system information in step 4, different parts of system information are sent to the source network device, and the part of system information can comprise other SIB and/or minimum SIB;

step 6: the source network device forwards the information (system information of different parts) to the terminal device and commands the terminal device to switch;

step 7, 8, 9: the terminal device completes the access in the target network device according to the configuration information, and the process can refer to the related flow of the prior art.

According to the transmission method of the system information provided by the embodiment of the invention, the system information blocks of the adjacent cells are stored in each cell, and when the target network equipment receives the acquisition request of the system information block of the terminal equipment for switching, the system information block of the target high-frequency cell is compared with the system information block of the source high-frequency cell, so that the repeated transmission of the system information block can be reduced, and the signaling overhead between the network equipment and the terminal equipment is saved.

The method of embodiments of the present invention is set forth above in detail and the apparatus of embodiments of the present invention is provided below.

Referring to fig. 9, a block diagram of a terminal device according to an embodiment of the present invention is shown, where the terminal device 1000 may include a receiving unit 11 and a sending unit 12.

The receiving unit 11 may be configured to perform downlink communication with a network device, for example, execute the above-mentioned part of S101, and receive a basic system information message from the network device corresponding to the target high frequency cell.

The sending unit 12 is configured to perform uplink communication with the network device, for example, perform at least one part of the foregoing S102 to S102 ″ or perform at least one part of the foregoing S203 to S203' ″ to acquire another system information block from the network device.

The specific implementation of the above modules can be referred to the description in the method embodiment, and is not described herein again.

According to the terminal equipment provided by the embodiment of the invention, other system information blocks with the same system information content as the cell of the target high-frequency cell in the set area range form a system information block group, when the terminal equipment performs cell switching, the terminal equipment receives basic system information of target network equipment, the basic system information message carries the identification of the system information block group, the terminal equipment acquires other system information blocks which are included in the system information block group with the identification different from that of the system information block group of the target high-frequency cell according to the difference between the identification of the system information block group of the source high-frequency cell and the identification of the system information block group of the target high-frequency cell, therefore, in the high-frequency networking, the terminal equipment does not need to acquire other system information blocks included in all the system information block groups of the target high-frequency cell, and the signaling overhead between the terminal equipment and the network equipment is saved.

Referring to fig. 10, which is a block diagram of a network device according to an embodiment of the present invention, the network device 2000 may include a sending unit 21 and a receiving unit 22.

The sending unit 21 may be configured to perform downlink communication with the terminal device, for example, to perform the part of S101 or S202, broadcast the basic system information message, and for example, to perform at least one part of S103 to S103', or at least one part of S204 to S204 ″ and send the other system information blocks requested to be acquired to the terminal device.

The receiving unit 22 may be configured to perform uplink communication with a terminal device, for example, at least one of the above-mentioned portions S103 to S103', or at least one of the above-mentioned portions S204 to S204 ″, to receive an acquisition request of the terminal device, and further, may also be configured to perform communication with a network device of another cell, for example, to perform the above-mentioned portion S201, and to receive an identifier of at least one system information block group transmitted by a cell backhaul where another system information block update is generated.

According to the network device provided by the embodiment of the invention, other system information blocks having the same system information content with the cell of the target high-frequency cell in the set area range form a system information block group, when the terminal equipment performs cell switching, the terminal equipment receives basic system information of target network equipment, the basic system information message carries the identification of the system information block group, and the terminal equipment acquires other system information blocks included in the system information block group with the identification different from that of the system information block group of the target high-frequency cell according to the difference between the identification of the system information block group of the source high-frequency cell and the identification of the system information block group of the target high-frequency cell, so that in the high-frequency networking, the terminal equipment does not need to acquire other system information blocks included in all system information block groups of the target high-frequency cell, so that signaling overhead between the network equipment and the terminal equipment is saved.

Referring to fig. 11, which is a schematic block diagram of another terminal device according to an embodiment of the present invention, the terminal device 3000 may include a receiving unit 31 and a sending unit 32.

The receiving unit 31 is configured to perform downlink communication with a network device, for example, execute the above-mentioned part of S301, and receive a basic system information message from the network device.

The sending unit 32 is configured to perform uplink communication with the network device, for example, perform at least one of the above S302 and S302', and acquire a basic system information block from the network device.

According to the terminal equipment provided by the embodiment of the invention, the basic system information blocks with the same system information content as the cells of the target high-frequency cell in the set area range form a system information block group, when the terminal equipment performs cell switching, the terminal equipment receives basic system information of target network equipment, the basic system information message carries the identification of the system information block group, the terminal equipment determines whether to continue to acquire the basic system information block included in the system information block group of the different part of the basic system message or the monitoring identification according to the difference between the identification of the system information block group of the source high-frequency cell and the identification of the system information block group of the target high-frequency cell, therefore, in high-frequency networking, the terminal equipment does not need to acquire all basic system information blocks included in the basic system information message all the time, and the cruising ability of the terminal equipment is improved.

Referring to fig. 12, a schematic block diagram of another terminal device according to an embodiment of the present invention is provided, where the terminal device 4000 may include a receiving unit 41 and a sending unit 42.

The sending unit 42 is configured to perform uplink communication with the network device, for example, execute the above-mentioned part of S403, and send an acquisition request of system information to the network device.

The receiving unit 41 is configured to perform downlink communication with the network device, for example, execute the above-mentioned part of S405, and receive a response message of the network device.

According to the terminal device provided by the embodiment of the invention, the system information blocks of the adjacent cells are stored in each cell, and when the target network device receives the acquisition request of the system information block of the terminal device for switching, the system information block of the target high-frequency cell is compared with the system information block of the source high-frequency cell, so that the repeated sending of the system information block can be reduced, and the signaling overhead between the terminal device and the network device can be saved.

Referring to fig. 13, a block diagram of another network device according to an embodiment of the present invention is shown, where the network device may include a receiving unit 51, an executing unit 52, and a sending unit 53.

The receiving unit 51 is configured to perform uplink communication with the terminal device, for example, perform the part of S403, receive a request for obtaining system information of the terminal device, and further perform communication with a network device of another cell, for example, perform the part of S401, and receive at least one updated system information block transmitted by a cell backhaul where the update of the system information block is generated.

The execution unit 52 is configured to control the operation of the network device, for example, execute the above-mentioned part S402, store the updated at least one system information block transmitted by the cell backhaul where the system information block update is generated, and execute the above-mentioned part S404, and search the stored at least one system information block of the source high frequency cell corresponding to the identifier of the source high frequency cell and/or the valid information of the system information block of the source high frequency cell.

The sending unit 53 is configured to perform downlink communication with the terminal device, for example, execute the above-mentioned S405, and send a response message to the terminal device.

According to the network equipment provided by the embodiment of the invention, the system information blocks of the adjacent cells are stored in each cell, and when the target network equipment receives the acquisition request of the system information block of the terminal equipment for switching, the system information block of the target high-frequency cell is compared with the system information block of the source high-frequency cell, so that the repeated sending of the system information block can be reduced, and the signaling overhead between the network equipment and the terminal equipment is saved.

Referring to fig. 14, for a hardware architecture diagram of a terminal device according to an embodiment of the present invention, the terminal device 6000 may include a receiver 61, a transmitter 62, a memory 63, and a processor 64, and the receiver 61, the transmitter 62, the memory 63, and the processor 64 are connected to each other through a bus 65. The related functions implemented by the receiving unit 11 in fig. 9 may be implemented by the receiver 61, and the related functions implemented by the transmitting unit 12 may be implemented by the transmitter 62.

The Memory 63 includes, but is not limited to, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM), or a portable Read-Only Memory (CD-ROM), and the Memory 63 is used for related instructions and data.

The receiver 61 is for receiving data and/or signals and the transmitter 62 is for transmitting data and/or signals. The transmitter and receiver may be separate devices or may be an integral device.

The processor 64 may include one or more processors, such as one or more Central Processing Units (CPUs), and in the case that the processor 64 is a single CPU, the CPU may be a single-core CPU or a multi-core CPU.

The memory 63 is used to store program codes and data of the network device.

The receiver 61 is configured to perform downlink communication with the terminal device, for example, execute the above-mentioned part of S101, and receive a basic system information message from a network device corresponding to the target high frequency cell. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

The transmitter 62 is configured to perform uplink communication with the terminal device, for example, perform at least one of the above-mentioned S102 to S102 ″ or perform at least one of the above-mentioned S203 to S203 ″, and acquire another system information block from the network device.

Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

It will be appreciated that fig. 14 only shows a simplified design of the terminal device. In practical applications, the terminal devices may also respectively include other necessary elements, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement the present invention are within the protection scope of the present invention.

Referring to fig. 15, a hardware architecture diagram of a network device according to an embodiment of the present invention is shown, where the network device 7000 may include a receiver 71, a transmitter 72, a memory 73, and a processor 74, and the receiver 71, the transmitter 72, the memory 73, and the processor 74 are connected to each other through a bus 75. The related functions implemented by the transmitting unit 21 in fig. 10 may be implemented by the transmitter 72, and the related functions implemented by the receiving unit 22 may be implemented by the receiver 71.

Memory 73 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, and memory 73 is used for associated instructions and data.

The receiver 71 is for receiving data and/or signals and the transmitter 72 is for transmitting data and/or signals. The transmitter and receiver may be separate devices or may be an integral device.

The processor 74 may include one or more processors, such as one or more CPUs, which may be single core CPUs or multi-core CPUs in the case where the processor 74 is one CPU.

The memory 73 is used to store program codes and data of the network device.

The transmitter 72 is configured to perform downlink communication with the terminal device, for example, perform the above-mentioned S101 or S202 part, broadcast the basic system information message, and for example, perform at least one part of the above-mentioned S103 to S103', or at least one part of the above-mentioned S204 to S204 ″, and send the other system information block requested to be acquired to the terminal device. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

The receiver 71 is configured to perform uplink communication with a terminal device, for example, at least one part of the foregoing S103 to S103', or at least one part of the foregoing S204 to S204 ″, to receive an acquisition request of the terminal device, and further, may also be configured to perform communication with a network device of another cell, for example, perform the part of the foregoing S201, and receive an identifier of at least one updated system information block group transmitted by cell backhaul generating an update of another system information block.

It will be appreciated that fig. 15 merely shows a simplified design of a network device. In practical applications, the network devices may also respectively include other necessary elements, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all network devices that can implement the present invention are within the protection scope of the present invention.

Referring to fig. 16, for another hardware architecture diagram of a terminal device according to an embodiment of the present invention, the terminal device 8000 may include a receiver 81, a transmitter 82, a memory 83, and a processor 84, where the receiver 81, the transmitter 82, the memory 83, and the processor 84 are connected to each other through a bus 85. The related functions implemented by the receiving unit 31 in fig. 11 may be implemented by the receiver 81, and the related functions implemented by the transmitting unit 32 may be implemented by the transmitter 82.

The memory 83 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, and the memory 83 is used for relevant instructions and data.

The receiver 81 is used for receiving data and/or signals and the transmitter 82 is used for transmitting data and/or signals. The transmitter and receiver may be separate devices or may be an integral device.

The processor 84 may include one or more processors, such as one or more CPUs, which may be single core CPUs or multi-core CPUs in the case that the processor 84 is one CPU.

The memory 83 is used for storing program codes and data of the terminal device.

The receiver 81 is configured to perform uplink communication with the terminal device, for example, execute the above-mentioned S301, and receive a basic system information message from the network device. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

The transmitter 82 is configured to perform downlink communication with the terminal device, for example, perform at least one of the above-mentioned S302 and S302', and acquire the basic system information block to the network device.

It will be appreciated that fig. 16 only shows a simplified design of the terminal device. In practical applications, the terminal devices may also respectively include other necessary elements, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement the present invention are within the protection scope of the present invention.

Referring to fig. 17, for a hardware architecture diagram of another terminal device provided in an embodiment of the present invention, the terminal device 9000 may include a receiver 91, a transmitter 92, a memory 93, and a processor 94, where the receiver 91, the transmitter 92, the memory 93, and the processor 94 are connected to each other through a bus 95. The related functions implemented by the receiving unit 41 in fig. 12 may be implemented by the receiver 91, and the related functions implemented by the transmitting unit 42 may be implemented by the transmitter 92.

The memory 93 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, and the memory 93 is used for relevant instructions and data.

The receiver 91 is for receiving data and/or signals and the transmitter 92 is for transmitting data and/or signals. The transmitter and receiver may be separate devices or may be an integral device.

The processor 94 may include one or more processors, such as one or more CPUs, which may be single core CPUs or multi-core CPUs in the case that the processor 94 is one CPU.

The memory 93 is used to store program codes and data of the terminal device.

The transmitter 92 is configured to perform downlink communication with the terminal device, for example, perform the above-mentioned S403, and send a system information acquisition request to the network device. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

The receiver 91 is configured to perform uplink communication with the terminal device, for example, execute the above-mentioned S405, and receive a response message of the network device.

It will be appreciated that fig. 17 only shows a simplified design of the terminal device. In practical applications, the terminal devices may also respectively include other necessary elements, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement the present invention are within the protection scope of the present invention.

Referring to fig. 18, for a hardware architecture diagram of another network device according to an embodiment of the present invention, the network device 1100 may include a receiver 111, a transmitter 112, a memory 113, and a processor 114, where the receiver 111, the transmitter 112, the memory 113, and the processor 114 are connected to each other through a bus 118. The related functions implemented by the receiving unit 51 in fig. 13 may be implemented by the receiver 111, the related functions implemented by the sending unit 53 may be implemented by the transmitter 112, and the related functions implemented by the executing unit 52 may be implemented by the one or more processors 114.

The memory 113 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, and the memory 113 is used for relevant instructions and data.

The receiver 111 is used for receiving data and/or signals and the transmitter 112 is used for transmitting data and/or signals. The transmitter and receiver may be separate devices or may be an integral device.

The processor 114 may include one or more processors, for example, one or more CPUs, and in the case that the processor 114 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The memory 113 is used to store program codes and data of the network device.

The receiver 111 is configured to perform uplink communication with the terminal device, for example, to perform the part of S403, receive a request for obtaining system information of the terminal device, and further, perform communication with a network device of another cell, for example, to perform the part of S401, and receive at least one updated system information block transmitted by a cell backhaul where the update of the system information block is generated.

The processor 114 is configured to control operations of the network device, such as executing the above-mentioned part S402, store the updated at least one system information block of the cell backhaul transmission generating the system information block update, and executing the above-mentioned part S404, and search for the stored at least one system information block of the source high frequency cell corresponding to the identity of the source high frequency cell and/or the valid information of the system information block of the source high frequency cell. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

The transmitter 112 is configured to perform downlink communication with the terminal device, for example, perform the above-mentioned S405, and send a response message to the terminal device. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

It will be appreciated that fig. 18 merely shows a simplified design of a network device. In practical applications, the network devices may also respectively include other necessary elements, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all network devices that can implement the present invention are within the protection scope of the present invention.

In yet another embodiment, a computer-readable storage medium is provided having stored therein instructions that, when executed on a computer, cause the computer to perform the method of the above aspects.

In yet another embodiment, a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of the above aspects is provided.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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.

It can be clearly understood by those skilled in the corresponding field that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk, SSD)), among others.

One of ordinary skill in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, and when executed, may include the processes of the above method embodiments. And the aforementioned storage medium includes: various media capable of storing program codes, such as ROM or RAM, magnetic or optical disks, etc.

Claims

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

when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, the terminal device receives a basic system information message from a network device corresponding to the target high-frequency cell, wherein the basic system information message comprises an identification of a system information block group of at least one other system information block and at least one basic system information block, each system information block group comprises at least one other system information block having the same system information content as at least one cell of the target high-frequency cell within a set area range, and the at least one other system information block is a system information block except the basic system information block;

the terminal device further performs at least one of the following steps:

if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is identical to the identifier of the at least one system information block group of the target high-frequency cell, the terminal device does not need to acquire at least one other system information block included in any system information block group of the target high-frequency cell;

if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is partially the same as the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends a first acquisition request to the network device, where the first acquisition request is used to request acquisition of at least one other system information block included in a system information block group different from the identifier of the at least one system information block group of the target high-frequency cell;

if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends a second acquisition request to the network device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high-frequency cell.

2. The method of claim 1, wherein the basic system information message further includes an area identification of the target high frequency cell, the method further comprising:

the terminal device further performs at least one of the following steps:

if the area identifier of the source high-frequency cell is different from the area identifier of the target high-frequency cell, the terminal device sends the second acquisition request to the network device;

if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is all the same as the identifier of the at least one system information block group of the target high-frequency cell, the terminal device does not need to acquire at least one other system information block included in any system information block group of the target high-frequency cell;

if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell, which is stored by the terminal device, is partially the same as the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends the first acquisition request to the network device;

and if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell, which is stored by the terminal device, is different from the identifier of the at least one system information block group of the target high-frequency cell, the terminal device sends the second acquisition request to the network device.

3. The method according to claim 1 or 2, wherein the system information block groups having the same system information content within the set area range have the same identification, and the system information block groups having different system information content within the set area range have different identifications.

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

broadcasting a basic system information message by a network device corresponding to a target high-frequency cell, wherein the basic system information message comprises an identification of a system information block group of at least one other system information block and at least one basic system information block, each system information block group comprises at least one other system information block having the same system information content as at least one cell of the target high-frequency cell within a set area, and the at least one other system information block is a system information block other than the basic system information block;

the network device further performs at least one of the following:

if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is partially identical to the identifier of the at least one system information block group of the target high-frequency cell, the network device receives a first acquisition request from the terminal device, where the first acquisition request is used to request to acquire at least one other system information block included in a system information block group of the source high-frequency cell of the terminal device, where the identifier of the at least one system information block group of the source high-frequency cell is partially different from the identifier of the at least one system information block group of the target high-frequency cell, and the network device sends the requested at least one other system information block included in a system information block group of which the identifier is partially different to the terminal device;

if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, the network device receives a second acquisition request from the terminal device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high-frequency cell, and the network device sends the at least one other system information block included in all system information block groups of the target high-frequency cell to the terminal device.

5. The method of claim 4, wherein the basic system information message further includes an area identification of the target high frequency cell, the method further comprising:

the network device further performs at least one of the following:

if the area identifier of the source high-frequency cell is different from the area identifier of the target high-frequency cell, the network device receives the second acquisition request from the terminal device, and the network device sends at least one other system information block included in all system information block groups of the target high-frequency cell to the terminal device;

if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is the same as the identifier of the at least one system information block group of the target high-frequency cell, the network device receives the first acquisition request from the terminal device, and the network device sends the requested at least one other system information block included in the system information block group of which the identifier is different to the terminal device;

if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, the network device receives the second acquisition request from the terminal device, and the network device sends, to the terminal device, at least one other system information block included in all the system information block groups of the target high-frequency cell.

6. The method according to claim 4 or 5, wherein the system information block group sent by the network device to the terminal device further comprises an identification of the system information block group.

7. The method of any of claims 4 to 5, further comprising:

if any system information block group of any cell adjacent to the target high-frequency cell comprises at least one other system information block which is updated, the network equipment receives an identifier of the updated at least one system information block group transmitted by the cell which generates the other system information block update in a feedback manner;

the network equipment compares the identifier of at least one other system information block group of the target high-frequency cell with the identifier of at least one updated system information block group of the adjacent cell to obtain the identifier of at least one system information block group with the same identifier, and broadcasts the identifier of at least one system information block group with the same identifier in the basic system information message.

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

when a terminal device is switched from a source high-frequency cell to a target high-frequency cell, the terminal device receives a basic system information message from a network device corresponding to the target high-frequency cell, wherein the basic system information message comprises at least one basic system information block and an identification of a system information block group of the at least one basic system information block, and each system information block group comprises at least one basic system information block with the same system information content as at least one cell of the target high-frequency cell within a set area;

the terminal device further performs at least one of the following steps:

if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal equipment is identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, the terminal equipment stops acquiring the basic system information message;

if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal device is partially identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, the terminal device obtains at least one basic system information block included in at least one system information block group identifier of at least one basic system information block of the source high-frequency cell and at least one system information block group identifier of at least one basic system information block of the target high-frequency cell.

9. A terminal device, comprising:

a receiving unit, configured to receive a basic system information message from a network device corresponding to a target high frequency cell when a terminal device is handed over from a source high frequency cell to the target high frequency cell, where the basic system information message includes an identifier of a system information block group of at least one other system information block and at least one basic system information block, each system information block group includes at least one other system information block having a same system information content as at least one cell of the target high frequency cell within a set area range, and the at least one other system information block is a system information block other than the basic system information block;

a sending unit, configured to perform at least one of the following operations:

if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is identical to the identifier of the at least one system information block group of the target high-frequency cell, at least one other system information block included in any system information block group of the target high-frequency cell does not need to be acquired;

if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is partially the same as the identifier of the at least one system information block group of the target high-frequency cell, sending a first acquisition request to the network device, where the first acquisition request is used to request to acquire at least one other system information block included in a system information block group different from the identifier of the at least one system information block group of the target high-frequency cell;

if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, sending a second acquisition request to the network device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high-frequency cell.

10. The terminal device of claim 9, wherein the basic system information message further includes an area identification of the target high frequency cell, and wherein the sending unit is configured to perform at least one of:

if the area identifier of the source high-frequency cell is different from the area identifier of the target high-frequency cell, sending the second acquisition request to the network equipment;

if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is all the same as the identifier of the at least one system information block group of the target high-frequency cell, it is not necessary to acquire at least one other system information block included in any system information block group of the target high-frequency cell;

if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell, which is stored by the terminal device, is partially the same as the identifier of the at least one system information block group of the target high-frequency cell, sending the first acquisition request to the network device;

and if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell and if the identifier of the at least one system information block group of the source high-frequency cell, which is stored by the terminal equipment, is different from the identifier of the at least one system information block group of the target high-frequency cell, sending the second acquisition request to the network equipment.

11. The terminal apparatus according to claim 9 or 10, wherein the system information block groups having the same system information content within the set area range have the same identification, and the system information block groups having different system information contents within the set area range have different identifications.

12. A network device, comprising:

a sending unit, configured to broadcast a basic system information message, where the basic system information message includes an identifier of a system information block group of at least one other system information block and at least one basic system information block, each system information block group includes at least one other system information block having the same system information content as at least one cell of a target high-frequency cell within a set area, and the at least one other system information block is a system information block other than the basic system information block;

a receiving unit, configured to receive a first acquisition request from a terminal device if an identifier of at least one system information block group of a source high frequency cell stored by the terminal device is the same as an identifier of at least one system information block group of the target high frequency cell, where the first acquisition request is used to request to acquire at least one other system information block included in a system information block group of the source high frequency cell of the terminal device, where the identifier of the at least one system information block group of the source high frequency cell is different from the identifier of the at least one system information block group of the target high frequency cell, and the transmitting unit is used to transmit the at least one other system information block included in the system information block group of which the requested identifier is different to the terminal device; and/or

The receiving unit is further configured to receive a second acquisition request from the terminal device if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high-frequency cell, and the sending unit is further used to send the at least one other system information block included in all system information block groups of the target high-frequency cell to the terminal device.

13. The network device of claim 12, wherein the basic system information message further includes an area identification of the target high frequency cell;

if the area identifier of the source high-frequency cell is different from the area identifier of the target high-frequency cell, the receiving unit is configured to receive the second acquisition request from the terminal device, and the sending unit is configured to send, to the terminal device, at least one other system information block included in all system information block groups of the target high-frequency cell; and/or

If the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is partially the same as the identifier of the at least one system information block group of the target high frequency cell, the receiving unit is configured to receive the first acquisition request from the terminal device, and the transmitting unit is configured to transmit, to the terminal device, at least one other system information block included in a system information block group of which the requested identifier is partially different;

if the area identifier of the source high-frequency cell is the same as the area identifier of the target high-frequency cell, and if the identifier of the at least one system information block group of the source high-frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high-frequency cell, the receiving unit is configured to receive the second acquisition request from the terminal device, and the transmitting unit is configured to transmit, to the terminal device, at least one other system information block included in all system information block groups of the target high-frequency cell.

14. The network device according to claim 12 or 13, wherein the system information block set sent to the terminal device further comprises an identification of the system information block set.

15. The network device of any of claims 12 to 13, wherein:

the receiving unit is further configured to receive, if at least one other system information block included in any system information block group of any cell adjacent to the target high-frequency cell is updated, an identifier of the updated at least one system information block group transmitted in a cell backhaul manner where the other system information block is updated;

the sending unit is further configured to compare the identifier of the at least one other system information block group of the target high-frequency cell with the identifier of the at least one updated system information block group of the neighboring cell, to obtain an identifier of the at least one system information block group with the same identifier, and broadcast the identifier of the at least one system information block group with the same identifier in the basic system information message.

16. A terminal device, comprising:

a receiving unit, configured to receive a basic system information message from a network device corresponding to a target high frequency cell when a terminal device is handed over from a source high frequency cell to the target high frequency cell, where the basic system information message includes at least one basic system information block and an identification of a system information block group of the at least one basic system information block, and each system information block group includes at least one basic system information block having a same system information content as at least one cell of the target high frequency cell within a set area;

a sending unit, configured to perform at least one of the following operations:

if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal equipment is identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, stopping acquiring the basic system information message;

if the system information block group identifier of at least one basic system information block of the source high-frequency cell stored by the terminal device is partially identical to the system information block group identifier of at least one basic system information block of the target high-frequency cell, acquiring at least one basic system information block included in at least one system information block group identifier of at least one basic system information block of the source high-frequency cell and at least one system information block group identifier of at least one basic system information block of the target high-frequency cell.