WO2019001592A1

WO2019001592A1 - System message acquisition method and apparatus, and computer readable storage medium

Info

Publication number: WO2019001592A1
Application number: PCT/CN2018/102362
Authority: WO
Inventors: 马伟; 李文婷; 马子江; 黄河
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-06-26
Filing date: 2018-08-25
Publication date: 2019-01-03
Also published as: CN109121189A

Abstract

A system message acquisition method and apparatus, and a computer readable storage medium. The system message acquisition method comprises: a terminal sends a preamble sequence to a network side to request a system message, and upon failing to acquire the requested system message, determines whether to resend the preamble sequence to request the system message according to the state of a timer used for the system message request. In the present solution, the operation for requesting the system message is controlled by the timer, so as to control terminal power consumption and network resource occupation.

Description

System message acquisition method and device, computer readable storage medium

Technical field

The present disclosure relates to mobile communication technologies, and in particular, to a system message acquisition method and apparatus, and a computer readable storage medium.

Background technique

The system message of NR (New Radio) is divided into minimum SI (minimum system information) and other SI (other system information). The important information of the minimum SI part is sent on the NR-PBCH (New Radio Physical Broadcast Channel), and the remaining ones are on the NR-PDSCH (New Radio Physical Downlink Shared Channel). send. The minimum SI shall give information about other SIs available in the current cell and the scheduling information of these SIs; at the same time, the minimum SI shall also give information on whether the SI is transmitted in the corresponding time window.

After the terminal enters a cell, the terminal reads the minimum SI, and can learn whether the SI of interest is transmitted in the current cell. If a terminal finds that one or more SIs of interest are not sent in the current cell, the terminal can send a request. The network side is notified to send the one or more SIs. After the terminal sends the SI request (SI request) on the network side, the terminal may receive the SI information in the corresponding time window, that is, “On demand demand SI” in the related art.

The related art provides a method for a terminal to request an SI, that is, a mobile terminal (in this application, a terminal, a mobile terminal, and a user equipment, all referring to a UE) sends a preamble (preamble sequence) to a network side request system message. Based on the received different preambles, the network side can identify that the terminal needs one or more SIs requested.

In the current study, after the SI request is sent by the terminal, if the network side fails to send the response SI information, or the network side sends the response SI but the terminal does not receive it correctly, the terminal will obtain the SI information. The SI request is resent to obtain the one or more SIs, and the terminal may send the SI request multiple times and listen to the time window corresponding to the SI multiple times. In this case, the power consumption of the terminal is too large, and frequently occupying the uplink channel wastes network resources.

Summary of the invention

At least one embodiment of the present disclosure provides a system message acquisition method and apparatus, and a computer readable storage medium, which reduces power consumption of a terminal and reduces occupation of network resources.

In order to achieve the purpose of the present disclosure, at least one embodiment of the present disclosure provides a system message obtaining method, including:

The terminal sends a preamble sequence to request a system message from the network side. After failing to acquire the requested system message, determining whether to resend the preamble sequence to request the system message according to a state of a timer used for the system message request.

In an optional embodiment, determining whether to resend the preamble sequence requesting the system message according to a status of a timer for the system message request includes:

When the timer does not time out, resending the preamble sequence requests the system message from the network side.

When the timer expires, stopping sending the preamble sequence requests the system message from the network side.

In an optional embodiment, the method further includes: after the terminal stops sending the preamble sequence to request the system message from the network side, stopping receiving or continuing to receive the last transmission corresponding to the preamble sequence System message sent by the system message sending window.

In an optional embodiment, the method further includes: when the terminal determines to request a system message and the timer is in a stop state, starting the timer.

In an optional embodiment, the method further includes: stopping the timer after the terminal successfully acquiring the requested system message.

In an optional embodiment, the method further includes:

After the terminal sends the preamble sequence to request the system message from the network side, the terminal receives the requested system message in a subsequent system message sending window;

Alternatively, after the terminal sends the preamble sequence to the network side to request the system message, the terminal receives the random access response sent by the network side at a subsequent time, and sends a third message to the network side to request the system message, after A subsequent system message sending window receives the requested system message.

In an optional embodiment, the failure to obtain the requested system message includes one of the following:

After transmitting the preamble sequence, the terminal does not receive the requested system message in a specified time window;

After transmitting the preamble sequence, the terminal does not receive the random access response sent by the network side at a subsequent time;

After transmitting the third message, the terminal does not receive the requested system message in the specified time window.

In an optional embodiment, the requested system message is not received: all or part of the content of the requested system message is not received.

In an optional embodiment, the timer status includes whether the timing of the timer exceeds a preset timing threshold, the timing threshold is locally preset by the terminal, or is obtained by the terminal from the network side.

In an optional embodiment, the timing threshold is locally preset by the terminal, and the timing threshold is a parameter preset in a user identification module or a global user identification module of the terminal.

In an optional embodiment, the obtaining, by the terminal, from the network side, the acquiring, by the terminal, the timing threshold from a minimum system message sent by the network side.

In an optional embodiment, when the terminal sends the preamble sequence to request the system message to the network side, and the subsequent system message sending window receives the requested system message, the method further includes:

When the terminal decides to stop sending the preamble sequence to request the system message according to the state of the timer, the terminal sends a preamble sequence to the network side, and after receiving the random access response for the preamble sequence, Sending a third message requests the system message.

In an optional embodiment, the method further includes:

When the terminal decides to stop sending the preamble sequence to request the system message according to the state of the timer, the terminal initiates a general random access procedure request to establish a radio resource control connection with the network side, and controls the connection establishment request in the radio resource. The system has system request information;

After establishing a radio resource control connection with the network side, the system message is obtained by using radio resource control proprietary signaling.

In an optional embodiment, when the terminal decides to stop sending the preamble sequence to request the system message according to the state of the timer, the terminal re-receives the minimum system message, if other systems in the newly received minimum system message The message information changes and the timer is reset.

In an optional embodiment, when the terminal decides to stop sending the preamble sequence to request the system message according to the state of the timer, the terminal re-receives the minimum system message, if other systems in the newly received minimum system message If the message information does not change, the current cell of the terminal is used as a forbidden access cell or a low priority cell.

At least one embodiment of the present disclosure provides a system message acquiring apparatus, including:

a sending module, configured to: send a preamble sequence to request a system message from the network side;

a receiving module, configured to acquire a system message sent by the network side;

a timer module, configured to maintain a timer for the system message request;

The determining module is configured to: after the receiving module fails to acquire the system message, determine whether to resend the preamble sequence requesting the system message according to a state of a timer used for the system message request.

In an optional embodiment, the determining module determines whether to resend the preamble sequence to request the system message according to a status of a timer for the system message request, including:

In an optional embodiment, the receiving, by the receiving module, the system message sent by the network side includes:

After the sending module sends the preamble sequence to the network side to request the system message, receiving the requested system message in a subsequent system message sending window;

Or after the sending module sends the preamble sequence to the network side to request the system message, the receiving module receives the random access response sent by the network side at a subsequent time, and the sending module sends the third message to the office. After the network side requests the system message, the system message of the request is received in a subsequent system message sending window.

In an optional embodiment, the sending module is further configured to: when the determining module determines to stop sending the preamble sequence to request the system message according to the state of the timer, initiate a general random access procedure request establishment and a radio resource control connection on the network side, and the system request information is included in the radio resource control connection establishment request message;

The receiving module is further configured to acquire the system message by using radio resource control proprietary signaling after the terminal establishes a radio resource control connection with the network side.

In an optional embodiment, the receiving module is further configured to: when the determining module determines to stop sending the preamble sequence to request the system message according to a state of the timer, re-receive a minimum system message;

The determining module is further configured to: if the other system message information in the newly received minimum system message does not change, use the current cell of the terminal as a forbidden access cell or a low priority cell.

At least one embodiment of the present disclosure provides a system message acquiring apparatus, including a memory and a processor, where the memory stores a program, and when the program is read and executed by the processor, the following operations are performed:

The sending preamble sequence requests the system message from the network side. After failing to acquire the requested system message, determining whether to resend the preamble sequence requesting the system message according to the state of the timer used for the system message request.

At least one embodiment of the present disclosure provides a computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the following step:

Compared with the related art, the application controls the operation of the system message by using a timer, stops the requesting system message in time after the timeout, and reduces the power consumption of the terminal and the occupation of network resources.

Other features and advantages of the present disclosure will be set forth in the description which follows. The objectives and other advantages of the present disclosure can be realized and obtained by the structure particularly pointed out in the appended claims.

DRAWINGS

The drawings are used to provide a further understanding of the technical solutions of the present disclosure, and constitute a part of the specification, and the embodiments of the present application are used to explain the technical solutions of the present disclosure, and do not constitute a limitation of the technical solutions of the present disclosure.

FIG. 1 is a flowchart of a method for acquiring a system message according to an embodiment of the present disclosure;

2 is a flowchart of a method for acquiring a system message according to an embodiment of the present disclosure;

FIG. 3 is a flowchart of a method for acquiring a system message according to an embodiment of the present disclosure;

FIG. 4 is a flowchart of a method for acquiring a system message according to an embodiment of the present disclosure;

FIG. 5 is a flowchart of a method for acquiring a system message according to an embodiment of the present disclosure;

FIG. 6 is a block diagram of a system message acquiring apparatus according to an embodiment of the present disclosure.

Detailed ways

The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The steps illustrated in the flowchart of the figures may be executed in a computer system such as a set of computer executable instructions. Also, although logical sequences are shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

At least one embodiment of the present disclosure provides a method for acquiring a system message, as shown in FIG. 1 , including:

Step 101: The terminal sends a preamble sequence to request a system message from the network side.

Step 102: After failing to acquire the requested system message, determine whether to resend the preamble sequence to request the system message according to a status of a timer used for the system message request.

When the timer does not time out, resending the preamble sequence to request the system message from the network side;

In an optional embodiment, after the terminal stops sending the preamble sequence to request the system message from the network side, the terminal stops receiving or continues to receive the system message sending window corresponding to the last time sending the preamble sequence. system information. That is, before the timer expires, the terminal sends the system message sent by the system message sending window corresponding to the preamble sequence to the system sequence message of the preamble sequence.

In an optional embodiment, the timer is initiated when the terminal decides to request a system message and the timer is in a stopped state. For example, the timer can be started before the first preamble sequence request system message is sent. Of course, the timer can also be started after sending the preamble sequence request system message and obtaining the requested system message fails.

In an optional embodiment, after the terminal successfully acquires the requested system message, the timer is stopped.

In an optional embodiment, when the information of other SI in the received minimum SI changes, the timer is reset. The resetting of the timer is to initialize the timer and restart.

Among them, whether the timer expires is judged according to the timing threshold. In actual use, the timer can be initially set to the timing threshold. After the timer starts counting, its timing value begins to decrease. When the timer's timing value reaches zero, it indicates timeout, or the timer initial value is set to Zero, after the timer starts counting, its timing value starts to increase. When the timer's timing value is greater than the timing threshold, it indicates timeout. The specific timing method used is not limited in this application. Depending on the timing method, the initialization is different, either by clearing the timer or by setting the timer to the timing threshold.

In an optional embodiment, the timing threshold is locally preset by the terminal, or is obtained by the terminal from the network side. For example, the timing threshold is preset for the terminal to be preset: the timing threshold is a subscriber identity module (SIM) or a global subscriber identity module (USIM) in the terminal. Set the parameters. For example, the obtaining, by the terminal, from the network side includes: acquiring, by the terminal, the timing threshold from a minimum SI sent by the network side.

In an alternative embodiment, the terminal obtains system messages in two ways:

Manner 1: After the terminal sends a preamble sequence to request a system message from the network side, the terminal receives the requested system message in a subsequent system message sending window.

Manner 2: After the terminal sends the preamble sequence to the network side to request the system message, the terminal receives the random access response (Radom Access Response, RAR for short) sent by the network side at a subsequent time, and sends a third message to the network. After the side requests the system message, the requested system message is received in a subsequent system message sending window.

In the first method, after the terminal sends the preamble sequence to the network side to request the system message, when the subsequent system message sending window does not receive the requested system message, the obtained system message fails to be acquired, and the subsequent system message is sent. When the window receives the requested system message, it successfully obtains the requested system message.

In the second mode, after the terminal sends the third message to the network side to request the system message, the terminal receives the requested system message in a subsequent system message sending window, and successfully acquires the requested system message. If the terminal does not receive the RAR sent by the network side at a subsequent time after transmitting the preamble sequence; or, after transmitting the third message, the terminal does not receive the specified time window. The system message requested, the terminal fails to acquire the requested system message.

The system message that is not received is that all or part of the content of the requested system message is not received.

The receiving the requested system message is to receive all or part of the content of the requested system message.

The above two needs to be used correspondingly. That is, if the requested system message is received: the entire content of the requested system message is received, then if only part of the requested system message is received, it is determined that the requested system is not received. Message. If the requested system message is received: part of the content of the requested system message is received, at this time, only part of the content may be received to determine that the requested system message is received.

In an optional embodiment, when the system message is obtained according to the method of the first manner, the method further includes:

When the terminal decides to stop sending the preamble sequence to request the system message according to the state of the timer, the terminal sends a preamble sequence to the network side, and after receiving the random access response for the preamble sequence, Sending a third message requests the system message. That is, after the timer expires, the preamble sequence may be sent to the network side by the terminal, and after receiving the random access response for the preamble sequence, the third message is sent to request the system message.

In an optional embodiment, when the system message is obtained according to the method described in the first mode or the second mode, the method further includes:

When the terminal decides to stop sending the preamble sequence to request the system message according to the state of the timer, the terminal initiates a general random access procedure request to establish a radio resource control (Radio Resource Control, RRC for short) connection on the network side, and The RRC connection setup request message carries system request information;

After establishing an RRC connection with the network side, the system message is obtained through RRC dedicated signaling.

That is, after the timer expires, the system message can also be obtained through the RRC dedicated signaling sent by the network side by establishing an RRC connection.

The system message obtaining method provided by the present application stops the sending of the preamble request system message after the timer expires by setting a timer. Compared with the related art, the manner of continuously sending the preamble request system message can reduce the power consumption of the terminal and reduce the network. The occupation of resources.

An embodiment of the present disclosure provides a method for acquiring a system message, including:

The timer for the system message request is started when the system message request operation is started;

During the timer timing: the mobile terminal sends a preamble to the network device request system message; and receives the requested system message. After obtaining the requested system message fails; resending the preamble to make a system message request. When the timer expires, the system message request operation is stopped.

Embodiment 1

This embodiment provides a method for acquiring a system message, as shown in FIG. 2, including:

Step 201: The terminal acquires a timing threshold of the timer.

For example, the terminal acquires the timing threshold from the local or acquires the timing threshold from the network side;

For example, local acquisition can be obtained from a baseband chip.

For example, the obtaining the timing threshold from the network side may be: after the terminal enters a cell, the minimum SI of the cell is read, and the timing threshold of the timer is read from the minimum SI.

Step 202: When the terminal needs to acquire other system messages (other SI), start the timer.

Step 203: The terminal sends a preamble for requesting the system message.

Step 204: After sending the preamble, the terminal receives the system message by sending a time window of the system message on the network side;

Step 205: Determine whether the terminal successfully receives the requested system message. If the system message is successfully received, the process of requesting the system message is successful, and the timer is stopped, and the system message is not successfully received. Then go to step 206;

Step 206: Determine whether the timer expires. If the timeout occurs, the system message request process fails and ends the system message request operation. If the timer does not time out, then step 203 is performed.

In this embodiment, the timer is used to determine whether to resend the preamble request system message, and the preamble acquisition system message is stopped after the timer expires, which reduces the power consumption of the terminal and reduces the occupation of network resources.

Embodiment 2

This embodiment provides another implementation manner of the system message obtaining method, as shown in FIG. 3, including:

Step 301: The terminal acquires a timing threshold of the timer.

The terminal acquires the timing threshold from the local area or acquires the timing threshold from the network side.

Step 302: When the terminal needs to acquire the other system message (other SI), start a timer.

Step 303: The terminal sends a preamble for requesting the system message.

Step 304, the terminal receives the response RAR of the preamble by the network side;

Step 305: The terminal sends a third message (MSG3) to the network side to request the system message.

Step 306: After sending the MSG3, the terminal receives the system message by sending a time window of the system message on the network side;

Step 307, determining whether the terminal successfully receives the requested system message, if the system message is successfully received, the process of requesting the system message is successful, stopping the timer, and ending; if the system message is not successfully received, Go to step 308;

In step 308, it is determined whether the timer expires. If the timeout is not changed to step 303, if the timeout expires, the system message request operation is stopped and the process ends.

Embodiment 3

This embodiment provides another implementation manner of a method for acquiring a system message. As shown in FIG. 4, the method includes:

Step 401: The terminal acquires a timing threshold of the timer.

Step 402: When the terminal needs to obtain other system messages, start the timer.

Step 403: The terminal sends a preamble for requesting the system message.

Step 404: After sending the preamble, the terminal receives the system message by sending a time window of the system message on the network side;

Step 405, it is determined whether the terminal successfully receives the requested system message, if the system message is successfully received, the process of requesting the system message is successful, the timer is stopped, and the process ends; otherwise, the process proceeds to step 406;

Step 406, it is determined whether the timer expires, if timeout, then go to step 407, if the timer has not timed out, then go to step 403;

Step 407: The terminal sends a preamble to the network side to initiate a random access procedure, establishes an RRC connection with the network side, and carries the SI request information in the RRC connection setup request.

Step 408: After the RRC connection is established, the terminal receives the SI sent by the network side through the RRC dedicated signaling.

Embodiment 4

This embodiment provides another implementation manner of the system message obtaining method, as shown in FIG. 5, including:

Step 501: The terminal acquires a timing threshold of the timer.

Step 502: When the terminal needs to acquire the other system message (other SI), start the timer. During the timer timing, perform the following operations:

A, the terminal sends a preamble for requesting the system message;

B. After the mobile terminal sends the preamble, the time window for sending the system message on the network side receives the system message;

C, determining whether the terminal successfully receives the requested system message, if the system message is successfully received, the process of requesting the system message is successful, and stopping the timer; if the system message is not successfully received, returning to the step A;

Step 503: If the timer expires, triggering the termination of the system message request operation, including: stopping sending the preamble request system message, and stopping receiving the system message.

An embodiment of the present disclosure provides a system message acquiring apparatus, as shown in FIG. 6, including:

The sending module 601 is configured to: send a preamble sequence to request a system message from the network side;

The receiving module 602 is configured to receive a system message sent by the network side;

a timer module 603, configured to maintain a timer for the system message request;

The determining module 604 is configured to, after the receiving module fails to acquire the system message, determine whether to resend the preamble sequence requesting the system message according to a state of a timer used for the system message request.

Determining, by the determining module, whether to resend the preamble sequence to request the system message according to a status of a timer for the system message request includes:

In an optional embodiment, the determining module 604 determines whether to resend the preamble sequence to request the system message according to a status of a timer for the system message request, including:

In an optional embodiment, the receiving, by the receiving module 602, the system message sent by the network side includes:

In an optional embodiment, the sending module 601 is further configured to: when the determining module 604 decides to stop sending the preamble sequence to request the system message according to the state of the timer, initiate a general random access procedure request. Establishing a radio resource control connection with the network side, and having system request information in the radio resource control connection establishment request message;

In an optional embodiment, the receiving module 601 is further configured to: when the determining module 604 decides to stop sending the preamble sequence to request the system message according to the state of the timer, re-receiving the minimum system message;

The determining module 604 is further configured to: if the other system message information in the newly received minimum system message does not change, use the current cell of the terminal as a forbidden access cell or a low priority cell.

An embodiment of the present disclosure provides a system message acquiring apparatus, including a memory and a processor, where the memory stores a program, and when the program is read and executed by the processor, the following operations are performed:

The program implements the above system message acquisition method when being read and executed by the processor. Therefore, refer to the related description in the system message acquisition method for other operations performed when the program is read and executed by the processor.

An embodiment of the present disclosure provides a computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the following steps :

The above program implements the above system message acquisition method when being read and executed by the processor. Therefore, the other operations performed when the program is read by the processor for execution are referred to the related description in the system message acquisition method.

The computer readable storage medium includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like, which can store program codes. Medium.

The embodiments disclosed in the present disclosure are as described above, but are merely used to facilitate the understanding of the present disclosure, and are not intended to limit the present disclosure. Any modification or variation in the form and details of the implementation may be made by those skilled in the art without departing from the spirit and scope of the disclosure. The scope defined by the appended claims shall prevail.

Industrial applicability

The system message obtaining scheme provided by the present disclosure controls the operation of the system message by using a timer, stops the requesting system message in time after the timeout, and reduces the power consumption of the terminal and the occupation of network resources.

Claims

A system message acquisition method includes:

The terminal sends a preamble sequence to request a system message from the network side. After failing to acquire the requested system message, determining whether to resend the preamble sequence to request the system message according to a state of a timer used for the system message request.
The system message obtaining method according to claim 1, wherein the determining whether to resend the preamble sequence requesting the system message according to a state of a timer for the system message request comprises:

When the timer does not time out, resending the preamble sequence requests the system message from the network side.
The system message obtaining method according to claim 1, wherein the determining whether to resend the preamble sequence requesting the system message according to a state of a timer for the system message request comprises:

When the timer expires, stopping sending the preamble sequence requests the system message from the network side.
The system message obtaining method according to claim 3, wherein the method further comprises: after the terminal stops sending the preamble sequence to request the system message from the network side, stopping receiving or continuing to receive the last sending station; The system message sent by the system message sending window corresponding to the preamble sequence.
The system message acquisition method according to claim 1, wherein the method further comprises: when the terminal decides to request a system message and the timer is in a stop state, starting the timer.
The system message obtaining method according to claim 1, wherein the method further comprises: stopping the timer after the terminal successfully acquires the requested system message.
The system message obtaining method according to claim 1, wherein the method further comprises:

After the terminal sends the preamble sequence to request the system message from the network side, the terminal receives the requested system message in a subsequent system message sending window;

Alternatively, after the terminal sends the preamble sequence to the network side to request the system message, the terminal receives the random access response sent by the network side at a subsequent time, and sends a third message to the network side to request the system message, after A subsequent system message sending window receives the requested system message.
The system message acquisition method of claim 7, wherein the failure to acquire the requested system message comprises one of the following:

After transmitting the preamble sequence, the terminal does not receive the requested system message in a specified time window;

After transmitting the preamble sequence, the terminal does not receive the random access response sent by the network side at a subsequent time;

After transmitting the third message, the terminal does not receive the requested system message in the specified time window.
The system message acquisition method according to claim 8, wherein said not receiving the requested system message is: not receiving all or part of the content of the requested system message.
The system message obtaining method according to claim 1, wherein the timer status comprises whether a timer count exceeds a preset timing threshold, the timing threshold is locally preset by the terminal, or Obtained by the network side.
The system message obtaining method according to claim 10, wherein the timing threshold is locally preset by the terminal, and the timing threshold is a parameter preset in a user identification module or a global user identification module of the terminal.
The system message obtaining method according to claim 10, wherein the obtaining, by the terminal, from the network side comprises: acquiring, by the terminal, the timing threshold from a minimum system message sent by the network side.
The system message obtaining method according to any one of claims 1 to 12, wherein when the terminal sends the preamble sequence to request the system message to the network side and the system message sending window receives the requested system message, the method further includes:

When the terminal decides to stop sending the preamble sequence to request the system message according to the state of the timer, the terminal sends a preamble sequence to the network side, and after receiving the random access response for the preamble sequence, Sending a third message requests the system message.
The system message obtaining method according to any one of claims 1 to 12, wherein the method further comprises:

When the terminal decides to stop sending the preamble sequence to request the system message according to the state of the timer, the terminal initiates a general random access procedure request to establish a radio resource control connection with the network side, and controls the connection establishment request in the radio resource. The system has system request information;

After establishing a radio resource control connection with the network side, the system message is obtained by using radio resource control proprietary signaling.
The system message obtaining method according to any one of claims 1 to 12, wherein, when the terminal decides to stop sending the preamble sequence to request the system message according to the state of the timer, the terminal re-receives the minimum system message, if The other system message information in the newly received minimum system message changes, resetting the timer.
The system message obtaining method according to any one of claims 1 to 12, wherein, when the terminal decides to stop sending the preamble sequence to request the system message according to the state of the timer, the terminal re-receives the minimum system message, if If the other system message information in the newly received minimum system message does not change, the cell currently in the terminal is regarded as a forbidden access cell or a low priority cell.
A system message acquiring device includes:

a sending module, configured to send a preamble sequence to request a system message from the network side;

a receiving module, configured to acquire a system message sent by the network side;

a timer module configured to maintain a timer for the system message request;

The determining module is configured to, after the receiving module fails to acquire the system message, determine whether to resend the preamble sequence requesting the system message according to a state of a timer used for the system message request.
The system message obtaining apparatus according to claim 17, wherein the determining module determines whether to resend the preamble sequence to request the system message according to a status of a timer for the system message request, including:

When the timer does not time out, resending the preamble sequence requests the system message from the network side.
The system message obtaining apparatus according to claim 17, wherein the determining module determines whether to resend the preamble sequence to request the system message according to a status of a timer for the system message request, including:

When the timer expires, stopping sending the preamble sequence requests the system message from the network side.
The system message obtaining apparatus according to claim 17, wherein the receiving, by the receiving module, the system message sent by the network side comprises:

After the sending module sends the preamble sequence to the network side to request the system message, receiving the requested system message in a subsequent system message sending window;

Or after the sending module sends the preamble sequence to the network side to request the system message, the receiving module receives the random access response sent by the network side at a subsequent time, and the sending module sends the third message to the office. After the network side requests the system message, the system message of the request is received in a subsequent system message sending window.
The system message obtaining apparatus according to any one of claims 17 to 20, wherein the transmitting module is further configured to: when the determining module decides to stop sending the preamble sequence to request the system message according to a state of the timer Initiating a general random access procedure request to establish a radio resource control connection with the network side, and having system request information in the radio resource control connection establishment request message;

The receiving module is further configured to acquire the system message by using radio resource control proprietary signaling after the terminal establishes a radio resource control connection with the network side.
The system message obtaining apparatus according to any one of claims 17 to 20, wherein the receiving module is further configured to: when the determining module determines to stop sending the preamble sequence to request the system message according to a state of the timer, Re-receive the minimum system message;

The determining module is further configured to: if the other system message information in the newly received minimum system message does not change, use the current cell of the terminal as a forbidden access cell or a low priority cell.
A system message obtaining apparatus, comprising: a memory and a processor, wherein the memory stores a program, and when the program is read and executed by the processor, the following operations are performed:

The sending preamble sequence requests the system message from the network side. After failing to acquire the requested system message, determining whether to resend the preamble sequence requesting the system message according to the state of the timer used for the system message request.
The system message obtaining apparatus according to claim 23, wherein said determining whether to resend said preamble sequence requesting said system message according to a state of a timer for said system message request comprises:

When the timer does not time out, resending the preamble sequence requests the system message from the network side.
The system message obtaining apparatus according to claim 23, wherein said determining whether to resend said preamble sequence requesting said system message according to a state of a timer for said system message request comprises:

When the timer expires, stopping sending the preamble sequence requests the system message from the network side.
A computer readable storage medium, wherein the computer readable storage medium stores one or more programs, the one or more programs being executable by one or more processors to implement the following steps:

The sending preamble sequence requests the system message from the network side. After failing to acquire the requested system message, determining whether to resend the preamble sequence requesting the system message according to the state of the timer used for the system message request.