CN106686693B - A system information transmission method and device - Google Patents

Abstract

The present invention discloses a system information transmission method, comprising: when it is determined that a base station is in a first state, sending first indication information; wherein, the first indication information is used to represent that the base station is in a first state; the The first state is used to indicate that the load of the cell is lower than the preset threshold; when it is determined that the base station is in the second state, the system information is sent according to the preset period; wherein, the second state is used to indicate the load of the cell If it is higher than the preset threshold, or used to indicate that the number of request messages received by the cell is higher than the preset threshold, the request messages are: an access request for obtaining system messages. The invention also discloses a base station and a terminal for implementing the method.

Description

A system information transmission method and device

technical field

The present invention relates to a system information transmission technology of a wireless communication system, in particular to a system information transmission method and device.

Background technique

In the existing LTE system, the system information is broadcast by the base station to the terminal, and the system information includes the necessary network parameters and configuration information such as the terminal camping in a cell, performing cell selection or reselection, and initiating an RRC connection. The system information acquisition method of the existing LTE system is usually as follows: the base station periodically broadcasts the system information, and the terminal can only acquire the system information broadcast by the base station in the silent (IDLE) state.

However, the above method has the following problems:

1) No matter the number of terminals in the cell is large or small, the base station must broadcast system messages uninterruptedly, and the system message sending mechanism is inflexible, resulting in waste of broadcast resources of the base station and power consumption;

2) The terminal acquires system information in a single way.

SUMMARY OF THE INVENTION

In order to solve the existing technical problems, the embodiments of the present invention provide a system information transmission method and device.

An embodiment of the present invention provides a method for transmitting system information, which is applied to a base station, and the method includes:

When it is determined that the base station is in the first state, the first indication information is sent;

Wherein, the first indication information is used to indicate that the base station is in a first state; the first state is used to indicate that the load of the cell is lower than a preset threshold;

When it is determined that the base station is in the second state, the system information is sent according to a preset period;

Wherein, the second state is used to indicate that the load of the cell is higher than a preset threshold, or used to indicate that the number of first request messages received by the cell is higher than a preset threshold, the first request The message is: an access request to obtain system information.

The embodiment of the present invention also provides a method for transmitting system information, which is applied to the first terminal, and the method includes:

Receive and analyze messages sent by base stations;

Judging the working state of the base station based on the message, where the working state includes: a first state and a second state;

Wherein, the first state is used to indicate that the load of the cell is lower than a preset threshold, and the base station in the first state sends first indication information indicating that it is in the first state; the second state is used to Indicates that the load of the cell is higher than a preset threshold, or is used to indicate that the number of first request messages received by the cell is higher than the preset threshold, where the first request message is: an access request for obtaining system information ;

When it is determined that the base station is in the first state, send the first request message; receive system information sent by the base station through RRC signaling;

When it is determined that the base station is in the second state, system information sent by the base station according to a preset period is received.

The embodiment of the present invention also provides a base station for transmitting system information, the base station includes:

a first judgment module, configured to judge whether the base station is in the first state or the second state, and notify the first processing module of the judgment result;

a first processing module, configured to send the first indication information when the first judgment module determines that the base station is in the first state; when the first judgment module determines that the base station is in the second state, send system information according to a preset period;

The first indication information is used to represent that the base station is in a first state; the first state is used to represent that the load of the cell is lower than a preset threshold; the second state is used to represent The load of the cell is higher than the preset threshold, or it is used to indicate that the number of first request messages received by the cell is higher than the preset threshold, where the first request message is: an access request for acquiring system information.

An embodiment of the present invention also provides a terminal for transmitting system information, the terminal comprising:

a second judgment module, configured to receive and analyze the message sent by the base station; judge the working state of the base station based on the message sent by the base station, and notify the second processing module of the judgment result;

The working state includes: a first state and a second state; the first state is used to indicate that the load of the cell is lower than a preset threshold, and the base station in the first state sends a signal indicating that it is in the first state the first indication information; the second state is used to indicate that the load of the cell is higher than the preset threshold, or used to indicate that the number of first request messages received by the cell is higher than the preset threshold, so The first request message is: an access request to obtain system information;

The second processing module is configured to send the first request message when it is determined that the base station is in the first state, and receive the system information sent by the base station through RRC signaling; when it is determined that the base station is in the second state, receive the base station System information sent according to a preset period.

The system information transmission method and device provided by the embodiments of the present invention send first indication information when it is determined that the base station is in the first state; wherein, the first indication information is used to indicate that the base station is in the first state; the The first state is used to indicate that the load of the cell is lower than the preset threshold; when it is determined that the base station is in the second state, the system information is sent according to the preset period; wherein, the second state is used to indicate the load of the cell If it is higher than the preset threshold value, or used to indicate that the number of request messages received by the cell is higher than the preset threshold value, the request message is: an access request for obtaining system messages. The embodiment of the present invention can realize that the base station can flexibly adjust the transmission mode of system information according to the change of cell load and/or potential load, so that the overhead occupied by system information broadcasting is smaller, and the base station is more energy-saving; in addition, the terminal can also use various The flexible way to obtain system information ensures that the network can obtain system information in a timely manner under the premise of saving overhead and power consumption.

Description of drawings

In the drawings, which are not necessarily to scale, like reference numerals may describe like parts in the different views. Similar reference numbers with different letter suffixes may denote different instances of similar components. The accompanying drawings generally illustrate, by way of example and not limitation, the various embodiments discussed herein.

FIG. 1 is a flow chart 1 of implementing a method for transmitting system information according to an embodiment of the present invention;

FIG. 2 is a second implementation flow chart of a method for transmitting system information according to an embodiment of the present invention;

3 is a schematic structural diagram of a base station according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram 1 of a terminal according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram 1 of a second processing module in a terminal according to an embodiment of the present invention;

FIG. 6 is a second structural schematic diagram of a second processing module in a terminal according to an embodiment of the present invention.

Detailed ways

In the embodiment of the present invention, when it is determined that the base station is in the first state, first indication information is sent; wherein, the first indication information is used to indicate that the base station is in the first state; the first state is used to indicate that the base station is in the first state The load of the cell is lower than the preset threshold; when it is determined that the base station is in the second state, the system information is sent according to the preset period; wherein, the second state is used to indicate that the load of the cell is higher than the preset threshold , or used to indicate that the number of request messages received by the cell is higher than a preset threshold, and the request messages are: an access request for obtaining system messages.

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a flowchart of the implementation of a method for transmitting system information according to an embodiment of the present invention, which is applied to a base station. As shown in FIG. 1 , the method includes:

Step 101: when it is determined that the base station is in the first state, send first indication information;

Wherein, the first indication information is used to indicate that the base station is in a first state; the first state is used to indicate that the load of the cell is lower than a preset threshold;

Step 102: when it is determined that the base station is in the second state, send system information according to a preset period;

Wherein, the second state is used to indicate that the load of the cell is higher than a preset threshold, or used to indicate that the number of first request messages received by the cell is higher than a preset threshold, the first request The message is: an access request to obtain system information.

In practical application, the base station broadcasts (sends) system information in two modes: one is a silent state (first state), and the other is an active state (second state).

Here, when the load of the cell is lower than a certain threshold, the cell will enter a silent state (first state) of system information broadcasting. When the load of the cell is higher than a certain threshold, or when the access request received by the cell that needs to obtain system information exceeds a certain threshold within a certain period of time, the cell will enter the active state of system information broadcasting (second state) . The load may include: the number of connected users, utilization of physical resource blocks, utilization of control channel elements (Control Channel Element, CCE), and the like.

During the silent period (first state) of broadcasting system information, the base station does not broadcast specific system information, but needs to broadcast an indication information (first indication information), indicating that the base station is currently in a silent state.

In the active state (second state) of broadcasting system information, the base station will broadcast the system information with a certain periodic frequency and repetition to ensure that the terminal can obtain the system information in time.

In one embodiment, when it is determined that the base station is in the first state, the method further includes:

The first parameter required when the terminal establishes the RRC connection is sent.

For example, in the silent state (the first state), the base station may also broadcast some system information and parameters necessary for the terminal to access the network to enter the radio resource control (RRC) connected state.

Here, the first parameter includes system information necessary when the terminal establishes an RRC connection.

In one embodiment, the system information includes a set of system configuration parameters or a set of more than two sets of system configuration parameters, correspondingly,

When it is determined that the base station is in the first state, the method further includes:

At least one index number is sent, each index number corresponding to a set of system configuration parameters in the system information.

Here, each set of system configuration parameters is: completed system information corresponding to one cell, and at least one of the two or more sets of system configuration parameters in the set is valid.

For example, the system information sent is set1 and set2, wherein set1 specifically includes a=2, b=3, and c=250; and set2 includes a=233, b=338476, and c=258. As for which group of parameters is valid, the group of set values currently broadcast is the current configuration of the cell. The set1 or set2 may be the index numbers mentioned above.

In an embodiment, the sent system information includes: system information of at least one cell. For example, it includes: the system information of the current cell (the current serving cell or the cell where the terminal is camping), and also includes the system information of other cells, usually the system information of neighboring cells.

Here, the system information sent includes: the system information of the current cell and the system information of the neighboring cell; wherein,

The system information of the neighbor cell at least includes: system configuration parameters different between the neighbor cell and the current cell.

That is, only the contents different from the system information of the local cell are given, and other contents that are the same as the system information of the local cell do not need to be given. For example: the system information of this cell is a=2, b=3, c=250; and the system information of the neighboring cell is a=2, b=3, c=2, then it is only necessary to add the neighboring cell to the system information sent The system information c=2 is sufficient, which is also called Δ configuration.

In an embodiment, the sent system information further includes: a time-frequency position used when sending the system information of the neighbor cell.

In this way, the terminal can quickly acquire the system information of the neighboring cell in the system information based on the time-frequency position.

In one embodiment, when it is determined that the base station is in the first state, the method further includes:

When it is determined that the system information has been changed, it switches to the second state.

Here, the base station switches to the second state, so as to quickly notify the terminals residing within the coverage area of the changed system information, so as to complete the update of the system information. The base station may notify the terminal by means of paging or the like.

In one embodiment, the method further includes:

determining that the base station is pre-switched from the second state to the first state;

At least one terminal within the designated coverage area sends the system information when the base station is in the first state.

Here, when the base station needs to switch from the second state (active state) to the first state (silent state), the base station may designate certain terminals within its coverage to provide broadcast message acquisition services (for details, refer to the terminal below side description).

An embodiment of the present invention further provides a method for transmitting system information, which is applied to the first terminal. As shown in FIG. 2 , the method includes:

Step 201: Receive and analyze the message sent by the base station; judge the working state of the base station based on the message, and the working state includes: a first state and a second state;

Wherein, the first state is used to indicate that the load of the cell is lower than a preset threshold, and the base station in the first state sends first indication information indicating that it is in the first state; the second state is used to Indicates that the load of the cell is higher than a preset threshold, or is used to indicate that the number of first request messages received by the cell is higher than the preset threshold, where the first request message is: an access request for obtaining system information ;

Step 202: when it is determined that the base station is in the first state, send the first request message; receive system information sent by the base station through RRC signaling;

Step 203: When it is determined that the base station is in the second state, receive system information sent by the base station according to a preset period.

In this embodiment, the system information sent by the base station includes: system information of at least one cell. For example, it includes: the system information of the current cell (the current serving cell or the cell where the terminal is camping), and also includes the system information of other cells, usually the system information of neighboring cells.

In practical application, when it is determined that the base station is in the first state, the first request message is sent; the system information sent by the base station through RRC signaling may be:

For example: when the first terminal needs to obtain the system information of the camping cell, if it finds the first indication information sent by the base station, it knows that the base station is currently in the silent period (the first state) of broadcasting system information, and will send the information to the camping cell. Initiate a connection establishment request and include the reason in the connection establishment request: System information needs to be obtained. After the base station obtains the connection establishment request of the first terminal that needs to obtain system information, it establishes an RRC connection with the first terminal, and sends the system information to the first terminal through RRC signaling.

In practical application, when it is determined that the base station is in the second state, the receiving system information sent by the base station according to a preset period may be:

For example, if the first terminal needs to obtain the system information of the camping cell, and the base station is in the system information broadcasting active period (second state), it can directly listen to the periodic broadcast of the base station to obtain the system information of the camping cell.

In one embodiment, the method further includes:

the first terminal analyzes the system information sent by the base station; the first terminal is located in the first cell;

Obtaining, based on the system information, a time-frequency location used by the base station when sending the system information of the second cell;

According to the time-frequency position, the system information of the second cell in the system information sent by the base station is received.

For example: when the first terminal measures in cell A that the signal of cell B is higher than a certain threshold, or the signal of cell B is higher than a certain value of cell A, the process of acquiring the system information of cell B is activated; of course, the first terminal also has The process of acquiring the system information of cell B may be activated by itself without being triggered, and the process may include:

First, the first terminal analyzes the system information broadcast by cell A, and learns the time-frequency position where the system information carries the system information of cell B; system message.

In one embodiment, when it is determined that the base station is in the first state, the method further includes:

The first terminal sends a second request message to the second terminal; the second request message is used by the first terminal to obtain the system information of the corresponding cell, and the second request message carries the identifier of the cell;

The first terminal determines whether the second terminal carries the pre-acquired system information, and if so, establishes a connection with the second terminal;

The system information of the pre-acquired cell sent by the second terminal is received.

For example: when the first terminal needs to obtain the system information of a certain cell, it sends a request for assistance in providing system information to other terminals, and the request needs to carry the ID corresponding to the cell of the required system information; when the second terminal receives the request from the first terminal Afterwards, if the second terminal determines that it carries the system information requested by the first terminal, it will establish a connection with the first terminal and provide the first terminal with the system information required by the first terminal.

In one embodiment, when it is determined that the base station is in the first state, the method further includes:

the first terminal monitors a message on the communication link between the terminals; the message includes: system information of at least one cell broadcast by the third terminal; the system information carries the identifier of the at least one cell;

The first terminal determines, based on the identifier, that the system information of the cell broadcast by the third terminal is pre-acquired system information;

The first terminal sends a third request message to the third terminal; the third request message is used by the first terminal to obtain the system information of the corresponding cell, and the third request message carries the identifier of the cell;

The pre-acquired system information sent by the third terminal is received.

For example, when the first terminal needs to obtain system information, it will monitor the messages on the direct communication link between the terminals; at the same time, if the third terminal has the system information of a certain cell, it will publish the information on the direct communication link between terminals. System information, the system information carries the ID of the certain cell, and indicates that other terminals (including the first terminal) and the third terminal own the system information of the cell.

When the first terminal detects the system information published by the third terminal, if the cell ID carried by the third terminal is exactly the cell ID corresponding to the system information required by the first terminal, the first terminal will initiate a notification to the third terminal. The request requires the provision of corresponding system information; the request information needs to clearly indicate which cell system information needs to be provided by the third terminal. After the third terminal receives the request from the first terminal, it will provide the system information of the corresponding cell according to its requirements. to the first terminal.

The embodiment of the present invention can realize that the base station can flexibly adjust the transmission mode of system information according to the change of cell load and/or potential load, so that the overhead occupied by system information broadcasting is smaller, and the base station is more energy-saving; in addition, the terminal can also use various The flexible way to obtain system information ensures that the network can obtain system information in a timely manner under the premise of saving overhead and power consumption.

An embodiment of the present invention further provides a base station for transmitting system information. As shown in FIG. 3 , the base station 30 includes:

The first judgment module 301 is used to judge whether the base station is in the first state or the second state, and notify the first processing module 302 of the judgment result;

The first processing module 302 is configured to send the first indication information when the first judgment module determines that the base station is in the first state; when the first judgment module determines that the base station is in the second state, send system information according to a preset period;

The first indication information is used to indicate that the base station is in a first state; the first state is used to indicate that the load of the cell is lower than a preset threshold; the second state is used to indicate that the load is lower than a preset threshold. The load of the cell is higher than the preset threshold, or it is used to indicate that the number of first request messages received by the cell is higher than the preset threshold, where the first request message is: an access request for acquiring system information.

Wherein, the second state is used to indicate that the load of the cell is higher than a preset threshold, or used to indicate that the number of first request messages received by the cell is higher than a preset threshold, the first request The message is: an access request to obtain system information.

In practical application, the base station broadcasts (sends) system information in two modes: one is a silent state (first state), and the other is an active state (second state).

Here, when the load of the cell is lower than a certain threshold, the cell will enter a silent state (first state) of system information broadcasting. When the load of the cell is higher than a certain threshold, or when the access request received by the cell that needs to obtain system information exceeds a certain threshold within a certain period of time, the cell will enter the active state of system information broadcasting (second state) . The load may include: the number of connected users, utilization of physical resource blocks, utilization of control channel elements (Control Channel Element, CCE), and the like.

During the silent period (first state) of broadcasting system information, the base station does not broadcast specific system information, but needs to broadcast an indication message (first indication information), indicating that the base station is currently in a silent state.

In the active state (second state) of broadcasting system information, the base station will broadcast the system information with a certain periodic frequency and repetition to ensure that the terminal can obtain the system information in time.

In one embodiment,

The first processing module 302 is further configured for the first judgment module 301 to determine that when the base station is in the first state, send the first parameter required by the terminal when establishing the RRC connection.

For example, in the silent state (the first state), the base station may also broadcast some system information and parameters necessary for the terminal to access the network to enter the radio resource control (RRC) connected state.

Here, the first parameter includes system information necessary when the terminal establishes an RRC connection.

In one embodiment, the system information includes a set of system configuration parameters or a set of more than two sets of system configuration parameters, correspondingly,

The first processing module 302 is further configured to send at least one index number when the first judgment module 301 determines that the base station is in the first state, and each index number corresponds to a group of system configuration parameters in the system information.

Here, each set of system configuration parameters is: completed system information corresponding to one cell, and at least one of the two or more sets of system configuration parameters in the set is valid.

For example, the system information sent is set1 and set2, wherein set1 specifically includes a=2, b=3, and c=250; and set2 includes a=233, b=338476, and c=258. As for which group of parameters is valid, the group of set values currently broadcast is the current configuration of the cell. The set1 or set2 may be the index numbers mentioned above.

In one embodiment,

The first processing module 302 is further configured to switch to the second state when the first determination module 301 determines that the base station is in the first state and determines that the system information is changed.

Here, the base station switches to the second state, so as to quickly notify the terminals residing within the coverage area of the changed system information, so as to complete the update of the system information. The base station may notify the terminal by means of paging or the like.

In one embodiment,

The first judgment module 301 is further configured to determine that the base station is pre-switched from the second state to the first state, and notify the first processing module of the result; correspondingly,

The first processing module 302 is further configured to, according to the result, specify that at least one terminal within the coverage area sends the system information when the base station is in the first state.

Here, when the base station needs to switch from the second state (active state) to the first state (silent state), the base station may designate certain terminals within its coverage to provide broadcast message acquisition services (for details, refer to the terminal below side description).

An embodiment of the present invention further provides a terminal for transmitting system information. As shown in FIG. 4 , the terminal 40 includes:

The second judgment module 401 is configured to receive and analyze the message sent by the base station; judge the working state of the base station based on the message sent by the base station, and notify the second processing module 402 of the judgment result;

The working state includes: a first state and a second state; the first state is used to indicate that the load of the cell is lower than a preset threshold, and the base station in the first state sends a signal indicating that it is in the first state the first indication information; the second state is used to indicate that the load of the cell is higher than the preset threshold, or used to indicate that the number of first request messages received by the cell is higher than the preset threshold, so The first request message is: an access request to obtain system information;

The second processing module 402 is configured to send the first request message when it is determined that the base station is in the first state, and receive the system information sent by the base station through RRC signaling; when it is determined that the base station is in the second state, receive the System information sent by the base station according to a preset period.

Wherein, the system information sent by the base station includes: system information of at least one cell. For example, it includes: the system information of the current cell (the current serving cell or the cell where the terminal is camping), and also includes the system information of other cells, usually the system information of neighboring cells.

In practical application, when it is determined that the base station is in the first state, the first request message is sent; the system information sent by the base station through RRC signaling may be:

For example: when the first terminal needs to obtain the system information of the camping cell, if it finds the first indication information sent by the base station, it knows that the base station is currently in the silent period (the first state) of broadcasting system information, and will send the information to the camping cell. Initiate a connection establishment request and include the reason in the connection establishment request: System information needs to be obtained. After the base station obtains the connection establishment request of the first terminal that needs to obtain system information, it establishes an RRC connection with the first terminal, and sends the system information to the first terminal through RRC signaling.

In practical application, when it is determined that the base station is in the second state, the receiving system information sent by the base station according to a preset period may be:

For example, if the first terminal needs to obtain the system information of the camping cell, and the base station is in the system information broadcasting active period (second state), it can directly listen to the periodic broadcast of the base station to obtain the system information of the camping cell.

In one embodiment,

The second judgment module 401 is further configured to analyze the system information sent by the base station, and obtain, based on the system information, the time-frequency position used by the base station to send the system information of the second cell; the terminal is located in the first cell;

The second processing module 402 is further configured to receive the system information of the second cell in the system information sent by the base station according to the time-frequency position.

For example: when the first terminal measures in cell A that the signal of cell B is higher than a certain threshold, or the signal of cell B is higher than a certain value of cell A, the process of acquiring the system information of cell B is activated; of course, the first terminal also has The process of acquiring the system information of cell B may be activated by itself without being triggered, and the process may include:

First, the first terminal analyzes the system information broadcast by cell A, and learns the time-frequency position where the system information carries the system information of cell B; system message.

In one embodiment, when the second judging module 401 judges that the base station is in the first state, as shown in FIG. 5 , the second processing module 402 includes:

The first sending unit 4021 is configured to send a second request message to the second terminal; the second request message is used for the terminal to obtain the system information of the corresponding cell, and the second request message carries the identifier of the cell;

A judgment unit 4022, configured to judge whether the second terminal carries the pre-acquired system information, and if so, establish a connection with the second terminal;

The first receiving unit 4023 is configured to receive the system information of the pre-acquired cell sent by the second terminal.

For example: when the first terminal needs to obtain the system information of a certain cell, it sends a request for assistance in providing system information to other terminals, and the request needs to carry the ID corresponding to the cell of the required system information; when the second terminal receives the request from the first terminal Afterwards, if the second terminal determines that it carries the system information requested by the first terminal, it will establish a connection with the first terminal and provide the first terminal with the system information required by the first terminal.

In one embodiment, when the second judgment module 401 judges that the base station is in the first state, as shown in FIG. 6 , the second processing module 402 includes:

The monitoring unit 4024 is configured to monitor a message on the communication link between the terminals; the message includes: system information of at least one cell broadcast by the third terminal; the system information carries the identifier of the at least one cell;

A determining unit 4025, configured to determine, based on the identifier, that the system information of the cell broadcast by the third terminal is pre-acquired system information;

The second sending unit 4026 is configured to send a third request message to the third terminal; the third request message is used by the terminal to obtain the system information of the corresponding cell, and the third request message carries the identity of the cell ;

The second receiving unit 4027 is configured to receive the pre-acquired system information sent by the third terminal.

For example, when the first terminal needs to obtain system information, it will monitor the messages on the direct communication link between terminals; at the same time, if the third terminal has the system information of a certain cell, it will publish the information on the direct communication link between terminals. System information, the system information carries the ID of the certain cell, and indicates that other terminals (including the first terminal) and the third terminal own the system information of the cell.

When the first terminal detects the system information published by the third terminal, if the cell ID carried by the third terminal is exactly the cell ID corresponding to the system information required by the first terminal, the first terminal will initiate a notification to the third terminal. The request requires the provision of corresponding system information; the request information needs to clearly indicate which cell system information needs to be provided by the third terminal. After the third terminal receives the request from the first terminal, it will provide the system information of the corresponding cell according to its requirements. to the first terminal.

It can be seen that the embodiment of the present invention can realize that the base station can flexibly adjust the transmission mode of system information according to the change of cell load and/or potential load, so that the overhead occupied by system information broadcasting is smaller, and the base station is more energy-saving; The flexible acquisition of system information in multiple ways ensures that the network can acquire system information in a timely manner under the premise of saving overhead and power consumption.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (19)

1. A method for transmitting system information, applied to a base station, wherein the method comprises: When it is determined that the base station is in the first state, the first indication information is sent; The first indication information is used to indicate that the base station is in a first state; the first state is used to indicate that the load of the cell is lower than a preset threshold, and the base station in the first state does not send system message; receiving a first request message returned in response to the first indication information; When it is determined that the base station is in the second state, the system information is sent according to a preset period; Wherein, the second state is used to indicate that the number of first request messages in the cell is higher than a preset threshold, and the first request message is: an access request for obtaining system information; When it is determined that the base station is in the first state, the method further includes: When it is determined that the system information has been changed, it switches to the second state. 2. The method according to claim 1, wherein, when the determining that the base station is in the first state, the method further comprises: The first parameter required when the terminal establishes the RRC connection is sent. 3. The method according to claim 1, wherein the system information comprises a set of system configuration parameters or a set of more than two sets of system configuration parameters, correspondingly, When it is determined that the base station is in the first state, the method further includes: At least one index number is sent, each index number corresponding to a set of system configuration parameters in the system information. 4. The method according to claim 1, wherein the system information sent comprises: system information of at least one cell. 5. The method according to claim 4, wherein the system information sent comprises: system information of the current cell and system information of a neighboring cell; wherein, The system information of the neighbor cell at least includes: system configuration parameters different between the neighbor cell and the current cell. 6 . The method according to claim 5 , wherein the sent system information further comprises: a time-frequency position used when sending the system information of the neighboring cell. 7 . 7. The method according to claim 1, wherein the method further comprises: determining that the base station is pre-switched from the second state to the first state; At least one terminal within the designated coverage area sends the system information when the base station is in the first state. 8. A method for transmitting system information, applied to a first terminal, wherein the method comprises: Receive and analyze messages sent by base stations; Judging the working state of the base station based on the message, where the working state includes: a first state and a second state; The first state is used to indicate that the load of the cell is lower than a preset threshold, and the base station in the first state sends first indication information indicating that it is in the first state, and does not send system information; the The second state is used to indicate that the number of first request messages received by the cell is higher than a preset threshold, and the first request messages are: an access request for obtaining system information; When it is determined that the base station is in the first state, send the first request message; receive system information sent by the base station through RRC signaling; When it is determined that the base station is in the second state, receiving system information sent by the base station according to a preset period; When it is determined that the base station is in the first state, the method further includes: The first terminal sends a second request message to the second terminal; the second request message is used by the first terminal to obtain the system information of the corresponding cell, and the second request message carries the identifier of the cell; The first terminal determines whether the second terminal carries the pre-acquired system information, and if so, establishes a connection with the second terminal; The system information of the pre-acquired cell sent by the second terminal is received. 9. The method according to claim 8, wherein the system information sent by the base station comprises: system information of at least one cell. 10. The method according to claim 9, wherein the method further comprises: the first terminal analyzes the system information sent by the base station; the first terminal is located in the first cell; Obtaining, based on the system information, a time-frequency location used by the base station when sending the system information of the second cell; According to the time-frequency position, the system information of the second cell in the system information sent by the base station is received. 11. The method according to claim 8, wherein when it is determined that the base station is in the first state, the method further comprises: the first terminal monitors a message on the communication link between the terminals; the message includes: system information of at least one cell broadcast by the third terminal; the system information carries the identifier of the at least one cell; The first terminal determines, based on the identifier, that the system information of the cell broadcast by the third terminal is pre-acquired system information; The first terminal sends a third request message to the third terminal; the third request message is used by the first terminal to obtain the system information of the corresponding cell, and the third request message carries the identifier of the cell; The pre-acquired system information sent by the third terminal is received. 12. A base station for transmitting system information, characterized in that the base station comprises: a first judgment module, configured to judge whether the base station is in the first state or the second state, and notify the first processing module of the judgment result; a first processing module, configured to send first indication information when the first judgment module determines that the base station is in the first state, and receive a first request message returned in response to the first indication information; the first judgment module determines When the base station is in the second state, the system information is sent according to a preset period; The first indication information is used to indicate that the base station is in a first state; the first state is used to indicate that the load of the cell is lower than a preset threshold, and the base station in the first state does not send system information; the second state is used to indicate that the number of first request messages in the cell is higher than a preset threshold, and the first request messages are: an access request for obtaining system information; The first processing module is further configured to switch to the second state when the first determination module determines that the base station is in the first state and determines that the system information is changed. 13. The base station according to claim 12, wherein, The first processing module is further configured to, when the first judgment module determines that the base station is in the first state, send the first parameter required by the terminal when establishing the RRC connection. 14. The base station according to claim 12, wherein the system information includes a set of system configuration parameters or a set of more than two sets of system configuration parameters, correspondingly, The first processing module is further configured to send at least one index number when the first judgment module determines that the base station is in the first state, and each index number corresponds to a group of system configuration parameters in the system information. 15. The base station according to claim 12, wherein, The first judgment module is further configured to determine that the base station is pre-switched from the second state to the first state, and notify the first processing module of the result; correspondingly, The first processing module is further configured to, according to the result, specify that at least one terminal within the coverage area sends the system information when the base station is in the first state. 16. A terminal for transmitting system information, characterized in that the terminal comprises: a second judgment module, configured to receive and analyze the message sent by the base station; judge the working state of the base station based on the message sent by the base station, and notify the second processing module of the judgment result; The working state includes: a first state and a second state; the first state is used to indicate that the load of the cell is lower than a preset threshold, and the base station in the first state sends a signal indicating that it is in the first state The first indication information of the cell does not send system information; the second state is used to indicate that the number of first request messages received by the cell is higher than the preset threshold, and the first request message is: obtain system information access request; The second processing module is configured to send the first request message when it is determined that the base station is in the first state, and receive the system information sent by the base station through RRC signaling; when it is determined that the base station is in the second state, receive the base station System information sent according to a preset period; When the second judgment module judges that the base station is in the first state, the second processing module includes: a first sending unit, configured to send a second request message to a second terminal; the second request message is used by the terminal to obtain system information of a corresponding cell, and the second request message carries an identifier of the cell; a judgment unit, configured to judge whether the second terminal carries the pre-acquired system information, and if so, establish a connection with the second terminal; A first receiving unit, configured to receive the system information of the pre-acquired cell sent by the second terminal. The terminal according to claim 16, wherein the system information sent by the base station comprises: system information of at least one cell. 18. The terminal according to claim 17, wherein, The second judgment module is further configured to analyze the system information sent by the base station, and obtain, based on the system information, the time-frequency position used by the base station to send the system information of the second cell; the terminal is located in the first cell; the first cell The second processing module is further configured to receive the system information of the second cell in the system information sent by the base station according to the time-frequency position. 19. The terminal according to claim 16, wherein when the second judgment module judges that the base station is in the first state, the second processing module comprises: a monitoring unit, configured to monitor a message on a communication link between terminals; the message includes: system information of at least one cell broadcast by a third terminal; the system information carries an identifier of the at least one cell; a determining unit, configured to determine, based on the identifier, that the system information of the cell broadcast by the third terminal is pre-acquired system information; a second sending unit, configured to send a third request message to the third terminal; the third request message is used by the terminal to obtain the system information of the corresponding cell, and the third request message carries the identity of the cell; The second receiving unit is configured to receive the pre-acquired system information sent by the third terminal.

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