WO2018228100A1

WO2018228100A1 - Network access method and mobile terminal

Info

Publication number: WO2018228100A1
Application number: PCT/CN2018/086455
Authority: WO
Inventors: 张昊; 葛磊; 张晨璐; 刘子海
Original assignee: 维沃移动通信有限公司
Priority date: 2017-06-16
Filing date: 2018-05-11
Publication date: 2018-12-20
Also published as: CN107071807A

Abstract

Provided are a network access method and a mobile terminal. The method comprises: if a paging request message sent by a network device is received, sending a first random access request to the network device in a first target cell of the current location area; determining whether a first response message, which corresponds to the first random access request and is sent by the network device, is received before a target timer times out; and if the first response message corresponding to the first random access request is not received before the target timer times out, determining a second target cell, and sending a second random access request to the network device in the second target cell.

Description

Network access method and mobile terminal

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201710459809.4, filed on Jun.

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to a network access method and a mobile terminal.

Background technique

With the development of science and technology, communication technology has developed rapidly and made great progress. With the improvement of communication technologies, mobile terminals are becoming more and more popular, and the functions of mobile terminals are becoming more and more abundant. The user can make a voice call using the mobile terminal.

Network coverage varies greatly in different regions, so mobile terminals are required to adapt to complex network environments, thus ensuring smooth implementation of various functions. When the mobile terminal needs to establish a radio resource management (RR, Radio Resource) wireless connection with the network device to initiate a random access request, if the network environment is poor, for example, the signal quality of the cell that initiates the random access request is poor, the cell The signal to noise ratio of the signal is relatively low or the network has no resources to allocate in the cell, which may cause the mobile terminal to fail to access the network. Therefore, in the related art, in a region where the network coverage is poor, the success rate of the mobile terminal accessing the network is low.

Summary of the invention

Some embodiments of the present disclosure provide a network access method and a mobile terminal to solve the problem that a mobile terminal has a low success rate of accessing a network in a region with poor network coverage.

In a first aspect, some embodiments of the present disclosure provide a network access method, which is applied to a mobile terminal, where the method includes:

Receiving a paging request message sent by the network device, sending, by the first target cell in the current location area, the first random access request to the network device;

Determining whether the first response message corresponding to the first random access request sent by the network device is received before the target timer expires, where the first response message carries the mobile terminal for indicating the mobile terminal Radio resource configuration information for communication;

Determining a second target cell and transmitting the second target cell to the network device if the first response message corresponding to the first random access request is not received before the target timer expires Second random access request.

In a second aspect, some embodiments of the present disclosure further provide a mobile terminal, including:

a first sending module, configured to: when receiving a paging request message sent by the network device, send, by the first target cell in the current location area, the first random access request to the network device;

a first determining module, configured to determine whether a first response message corresponding to the first random access request sent by the network device is received before the target timer expires, where the first response message is carried There is radio resource configuration information for instructing the mobile terminal to communicate;

a second sending module, configured to determine a second target cell if the first response message corresponding to the first random access request is not received before the target timer expires, and in the second target The cell sends a second random access request to the network device.

In a third aspect, some embodiments of the present disclosure further provide a mobile terminal, including: a processor, a memory, and a network access program stored on the memory and operable on the processor, The steps of the network access method described above are implemented when the network access procedure is executed by the processor.

In a fourth aspect, some embodiments of the present disclosure further provide a computer readable storage medium, wherein the computer readable storage medium has a network access program stored thereon, and the network access program is processed by a processor. The steps of implementing the above network access method are implemented.

As such, in some embodiments of the present disclosure, if the paging request message sent by the network device is received, the first target cell in the current location area sends a first random access request to the network device; Whether the first response message corresponding to the first random access request sent by the network device is received before the timeout, wherein the first response message carries a radio resource used to indicate that the mobile terminal performs communication Configuring information; if the first response message corresponding to the first random access request is not received before the target timer expires, determining a second target cell, and in the second target cell The network device sends a second random access request. In this way, the mobile terminal may send the first random access request in the first target cell, and if the corresponding first response message is not received before the target timer expires, the second random access request may be sent on the second target cell. . The success rate of the mobile terminal accessing the network is improved.

DRAWINGS

In order to more clearly illustrate the technical solutions of some embodiments of the present disclosure, the drawings used in the description of some embodiments of the present disclosure will be briefly described below. It is obvious that the drawings in the following description are only the disclosure of the present disclosure. For some embodiments, other drawings may be obtained from those of ordinary skill in the art in light of the inventive workability.

1 is a schematic diagram of a mobile terminal and a base station provided by some embodiments of the present disclosure;

FIG. 2 is a flowchart of a network access method according to some embodiments of the present disclosure;

3 is a schematic diagram of a method for initiating a random access request according to some embodiments of the present disclosure;

FIG. 4 is a flowchart of another network access method according to some embodiments of the present disclosure;

FIG. 5 is a schematic diagram of another method for initiating a random access request according to some embodiments of the present disclosure;

FIG. 6 is a schematic diagram of another method for initiating a random access request according to some embodiments of the present disclosure;

FIG. 7 is a structural diagram of a mobile terminal according to some embodiments of the present disclosure;

FIG. 8 is a structural diagram of another mobile terminal according to some embodiments of the present disclosure;

FIG. 9 is a structural diagram of another mobile terminal according to some embodiments of the present disclosure.

FIG. 10 is a structural diagram of another mobile terminal according to some embodiments of the present disclosure;

FIG. 11 is a structural diagram of another mobile terminal according to some embodiments of the present disclosure;

FIG. 12 is a structural diagram of another mobile terminal according to some embodiments of the present disclosure.

detailed description

The technical solutions in some embodiments of the present disclosure will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are a part of the embodiments of the present disclosure, and not all of the embodiments. example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

Referring to FIG. 1, FIG. 1 is a schematic diagram of a mobile terminal and a base station according to some embodiments of the present disclosure. In FIG. 1, the location area includes three target cells, namely, Cell A (Cell-A), Cell B (Cell-B), and Cell C (Cell-C). The specific functions of the mobile terminal and the base station will be specifically described by the following various embodiments.

Referring to FIG. 2, FIG. 2 is a flowchart of a network access method according to some embodiments of the present disclosure, which is applied to a mobile terminal. As shown in Figure 2, the following steps are included:

Step 201: If receiving a paging request message sent by the network device, sending, by the first target cell in the current location area, the first random access request to the network device.

In step 201, if the mobile terminal receives the paging request message sent by the network device, the first target cell in the current location area may send the first random access request to the network device. The current signal type of the mobile terminal may be a Global System for Mobile Communications (GSM) signal, a 3G mobile communication technology 3G signal, a Long Term Evolution (LTE) signal, or a 5G signal of a next-generation mobile communication technology. . In the following description, GSM is taken as an example for explanation.

If the mobile terminal is registered on GSM, in the idle connection mode, GSM can page the mobile terminal in the location area (LA, Location Area). The location area may include multiple target cells, and the first target cell is one of a plurality of target cells included in the location area.

As shown in FIG. 1, the location area includes three target cells, namely, Cell A (Cell-A), Cell B (Cell-B), and Cell C (Cell-C). If the Cell-A is the first target cell where the mobile terminal is located, the mobile terminal can send the first random access to the network device on the Cell-A after receiving the paging request message sent by the network device. request.

As shown in FIG. 3, it is a schematic diagram of initiating a random access request. In FIG. 3, the radio resource management (RR) layer of the network device may send a paging request message, that is, DL_UNIT_DATA_IND (Paging Request), to the RR layer of the mobile terminal. Next, the RR layer of the mobile terminal may send a paging indication, that is, paging_indication, to the Mobility Management (MM) layer of the mobile terminal.

Step 202: Determine whether a first response message corresponding to the first random access request sent by the network device is received before the target timer expires, where the first response message carries an indication The radio resource configuration information that the mobile terminal performs communication.

After the MM layer receives the paging_indication sent by the RR layer, the MM layer of the mobile terminal sends a first paging response message, that is, a Paging Response, to the RR layer of the mobile terminal. At the same time, you can start the T3126 timer to start timing, that is, you can start the T3126Timer to start timing. The T3126 timer can be set for a period of time.

The RR layer of the mobile terminal may send a downlink random access request, ie, DL_RANDOM_ACCESS_REQ, to the data link layer Layer 2 of the mobile terminal. That is, the RR layer of the mobile terminal can send a channel request, that is, a Channel Request, to the data link layer Layer 2 of the mobile terminal. Among them, the data link layer Layer 2 can be recorded as L2. Next, the L2 of the mobile terminal can be triggered to send the first random access request to the L2 of the network device. For example, a first random access request can be sent to the network device on Cell-A.

During the time period set by the T3126 timer, if the mobile terminal sends the first random access request to the network device on the Cell-A, and does not receive the first response corresponding to the first random access request. The message, that is, the Immediate Assignment message sent by the L2 layer of the network device, the mobile terminal can send a second random access request to the network device on the Cell-A. The first response message carries radio resource configuration information used to indicate that the mobile terminal performs communication. If the immediate assignment message corresponding to the second random access request is not received, the mobile terminal may send a third random access request to the network device on Cell-A. By analogy, the mobile terminal can send multiple random access requests to the network device on Cell-A.

It can be determined whether the first response message corresponding to the first random access request sent by the network device is received before the target timer expires, that is, whether the first random number is received within the time period set by the T3126 timer The immediate assignment message corresponding to the access request, that is, whether the immediate assignment message corresponding to the first random access request sent on the Cell-A is received within the time period set by the T3126 timer can be determined.

Step 203: If the first response message corresponding to the first random access request is not received before the target timer expires, determining a second target cell, and in the second target cell, The network device sends a second random access request.

In step 203, if the first response message corresponding to the first random access request is not received before the target timer expires, that is, if the Cell-A is not received within the time period set by the T3126 timer The mobile terminal may determine the second target cell and send the second random access request to the network device in the second target cell, if the first random access request corresponding to the first random access request is sent. That is, the random access request may be sent to the network device again on the second target cell. The second target cell and the first target cell may belong to the same location area, or may not belong to the same location area. For example, the Cell-B in the location area to which the Cell-A belongs may be used as the second target cell, that is, the random access request may be sent to the network device again on the Cell-B.

In some embodiments of the present disclosure, the mobile terminal may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), and a mobile internet device (Mobile Internet). Device, MID) or Wearable Device.

A method of network access of some embodiments of the present disclosure is applied to a mobile terminal. Receiving a paging request message sent by the network device, sending, by the first target cell in the current location area, a first random access request to the network device; determining whether the network device is sent before the target timer expires a first response message corresponding to the first random access request, where the first response message carries radio resource configuration information used to indicate that the mobile terminal performs communication; if the target timer is If the first response message corresponding to the first random access request is not received before the timeout, the second target cell is determined, and the second target access cell sends a second random access request to the network device. In this way, the mobile terminal may send the first random access request in the first target cell, and if the corresponding first response message is not received before the target timer expires, the second random access request may be sent on the second target cell. . The success rate of the mobile terminal accessing the network is improved.

Referring to FIG. 4, FIG. 4 is a flowchart of another network access method according to some embodiments of the present disclosure, which is applied to a mobile terminal. As shown in Figure 4, the following steps are included:

Step 401: If receiving the paging request message sent by the network device, accessing the mobile terminal by using a non-access stratum of the mobile terminal in a first target cell of the current location area The layer sends a first paging response message, and the access layer sends the first random access request to the network device according to the first paging response message.

In step 401, if the mobile terminal receives the paging request message sent by the network device, the first target cell in the current location area may send the first random access request to the network device. Still taking FIG. 1 as an example, in FIG. 1, the location area includes three target cells, namely, Cell A (Cell-A), Cell B (Cell-B), and Cell C (Cell-C). The Cell-A can be used as the first target cell, that is, after receiving the paging request message sent by the network device, the mobile terminal first sends a first random access request to the network device on the Cell-A.

More specifically, the first paging response message may be sent to the access layer of the mobile terminal by the non-access stratum of the mobile terminal, and the access layer of the mobile terminal sends the first random connection to the network device according to the first paging response message. Into the request.

Step 402: Determine whether a first response message corresponding to the first random access request sent by the network device is received before the target timer expires, where the first response message carries an indication The radio resource configuration information that the mobile terminal performs communication.

In step 402, the mobile terminal may set a target timer, and determine whether a first response message corresponding to the first random access request sent by the network device is received before the target timer expires. The first response message carries radio resource configuration information used to indicate that the mobile terminal performs communication.

Step 403: Determine, according to the current signal type of the mobile terminal, the second response message, where the signal type includes a global mobile communication system GSM signal, a third generation mobile communication technology 3G signal, a long term evolution LTE signal, or A generation of mobile communication technology 5G signals.

In step 403, if the first response message corresponding to the first random access request is not received before the target timer expires, that is, if the cell is not received in the time period set by the T3126 timer The second target cell may be determined by the first assignment message corresponding to the first random access request sent, and the second response message may be determined according to the current signal type of the mobile terminal. The current signal type of the mobile terminal may include a GSM signal, a 3G signal, an LTE signal, or a 5G signal.

Optionally, the step of determining the second response message according to the current signal type of the mobile terminal includes:

When the current signal type of the mobile terminal is the GSM signal, determining that the second response message is a second paging response message;

When the current signal type of the mobile terminal is the LTE signal, determining that the second response message is a location area update message.

When the current signal type is an LTE signal, the second response message is a location area update message, that is, a Location Area Update, and the location update message includes the CSMT identifier and is set to TRUE.

When the current signal type of the mobile terminal is a GSM signal, the second response message may be determined as a second paging response message; when the current signal type of the mobile terminal is an LTE signal, the second response message may be determined to be a location area update message.

Step 404: If the first response message corresponding to the first random access request is not received before the target timer expires, determining the second target cell, by using the non-access stratum of the mobile terminal The access layer of the mobile terminal sends a second response message, and the access layer sends the second random access request to the network device according to the second response message.

In step 404, as previously described, if the first response message corresponding to the first random access request is not received before the target timer expires, the second target cell may be determined and may be based on the current mobile terminal. The signal type determines the second response message.

Optionally, the step of determining the second target cell, if the first response message corresponding to the first random access request is not received before the target timer expires, includes:

Performing measurement on the target cell, and sorting the target cell according to the measurement result;

The second target cell is determined according to the ranking result.

The target cell can be measured, and the target cells are sorted according to the measurement result. And determining a second target cell according to the ranking result. For example, a target cell with a relatively large signal-to-noise ratio and a good signal quality may be ranked first, that is, a target cell with a relatively large signal-to-noise ratio and good signal quality may be preferentially used as the second target cell.

For each random access attempt, the cell that fails the random access will not be included in the ordered list of the target cell for a period of time T _forbidden , preventing the cell that failed the previous random access from having a strong signal quality and being re- Selected as the target cell.

Optionally, the target cell includes a cell in a current location area and/or a cell in another location area, where the target cell is N, where N is an integer greater than 1.

The first target cell and the second target cell are all target cells in the N target cells, and the first target cell and the second target cell are located in the same location area or different location areas.

The target cell includes cells in the current location area and/or cells in other location areas, and the target cell is N, where N is an integer greater than 1. The first target cell and the second target cell are all target cells in the N target cells, and the first target cell and the second target cell may be located in the same location area or in different location areas.

After the second response message is determined, the second response message may be sent to the access layer of the mobile terminal by the non-access stratum of the mobile terminal, and the access layer of the mobile terminal sends the second random connection to the network device according to the second response message. Into the request.

For example, as shown in FIG. 5, it is another schematic diagram of initiating a random access request. In FIG. 5, the RR layer of the network device may send a paging request message, that is, DL_UNIT_DATA_IND (Paging Request), to the RR layer of the mobile terminal. Next, the RR layer of the mobile terminal may send a paging indication, that is, paging_indication, to the MM layer of the mobile terminal.

Then, the MM layer of the mobile terminal may send a first paging response message, that is, a Paging Response, to the RR layer of the mobile terminal. At the same time, you can start the T3126 timer to start timing, that is, you can start the T3126Timer to start timing. The T3126 timer can be set for a period of time.

The RR layer of the mobile terminal may send a downlink random access request, that is, DL_RANDOM_ACCESS_REQ, to L2 of the mobile terminal. That is, the RR layer of the mobile terminal can send a channel request, that is, a Channel Request, to the mobile terminal's L2. Next, the L2 of the mobile terminal can be triggered to send the first random access request to the L2 of the network device. For example, a first random access request can be sent to the network device on Cell-A.

During the time period set by the T3126 timer, if the mobile terminal sends the first random access request to the network device on the Cell-A, and does not receive the first response corresponding to the first random access request. The message is the immediate assignment of the message. The mobile terminal can send a second random access request to the network device on Cell-A. If the immediate assignment message corresponding to the second random access request is not received, the mobile terminal may send a third random access request to the network device on Cell-A. By analogy, the mobile terminal can send multiple random access requests to the network device on Cell-A.

It can be determined whether an immediate assignment message corresponding to the first random access request is received within a time period set by the T3126 timer, that is, whether the cell is received and received in the time period set by the T3126 timer. The immediate assignment message corresponding to the first random access request sent on the -A.

If the immediate assignment message corresponding to the first random access request sent on the Cell-A is not received within the time period set by the T3126 timer, the mobile terminal may determine the second target cell, and in the The second target cell sends a second random access request to the network device. That is, the random access request may be sent to the network device again on the second target cell. The second target cell and the first target cell may belong to the same location area, or may not belong to the same location area. For example, the Cell-B in the location area to which the Cell-A belongs may be used as the second target cell, that is, the random access request may be sent to the network device again on the Cell-B.

For example, in FIG. 5, if an immediate assignment message corresponding to the first random access request transmitted on the Cell-A is not received within the time period set by the T3126 timer, the mobile terminal may pass the physical layer. Layer 1 selects Cell-B. And the MM layer of the mobile terminal can send the second response message, that is, the second paging response message, that is, the Paging Response, to the RR layer of the mobile terminal. At the same time, the T3126 timer can be started again to start timing, that is, the T3126Timer can be started again to start timing. The T3126 timer can be set for a period of time.

The RR layer of the mobile terminal may again send a downlink random access request, that is, DL_RANDOM_ACCESS_REQ, to the mobile terminal's L2. That is, the RR layer of the mobile terminal can again send a channel request, that is, a Channel Request, to the mobile terminal's L2. Next, it is possible to trigger the L2 of the mobile terminal to send a random access request to the L2 of the GSM again. For example, a second random access request can be sent to the network device on Cell-B.

It may be determined whether a third response message corresponding to the second random access request sent in the second target cell is received within the time period set by the T3126 timer. That is, it can be determined whether a third response message corresponding to the second random access request transmitted on the Cell-B is received within the time period set by the T3126 timer.

If a third response message corresponding to the second random access request transmitted on the Cell-B is received within the time period set by the T3126 timer, it may be determined that the mobile terminal has accessed the GSM.

Next, the RR layer of the mobile terminal may send a downlink setup request, ie DL_EST_REQ, to L2 of the mobile terminal. The downlink setup request includes a paging response, that is, a Paging Response. Then, L2 of the mobile terminal can send a Set Asynchronous Balanced Mode (SABM) frame to the L2 of the GSM. The SABM frame may carry a paging response, that is, a Paging Response. If the L2 of the mobile terminal receives the UA frame within the preset time period, it can be determined that the L2 of the mobile terminal establishes a connection with the L2 of the GSM.

The L2 of the network device can send a downlink setup indication, DL_EST_IND, to the RR layer of the GSM. The downlink setup indication includes a paging response, that is, a Paging Response. The RR layer of the network device can then send an RR setup confirmation, ie RR_EST_CNF, to the MM layer of the network device. The RR establishment confirmation includes a paging response, that is, a Paging Response. So far, the paging response sent by the MM layer of the mobile terminal has reached the MM layer of the network device.

For the mobile terminal side, after the L2 of the mobile terminal receives the UA frame within the preset time period, that is, after determining that the L2 of the mobile terminal establishes a connection with the L2 of the GSM, the L2 of the mobile terminal may send the RR2 of the mobile terminal to the RR layer of the mobile terminal. The downstream establishment confirmation, that is, DL_EST_CNF. So far, since the mobile terminal has accessed the network, and the L2 of the mobile terminal is also connected with the L2 of the GSM, it can be determined that the RR layer of the mobile terminal establishes a connection with the RR layer of the network device.

After determining that the RR layer of the mobile terminal establishes a connection with the RR layer of the network device, the RR layer of the mobile terminal may send an RR establishment indication, that is, RR_EST_IND, to the MM layer of the mobile terminal. The MM layer is notified by the RR establishment indication to the mobile terminal: the RR layer of the mobile terminal has established a connection with the RR layer of the network device. That is, the RR layer of the mobile terminal is in a connected state with the RR layer of the network device, that is, the Connected state.

Next, the MM layer of the network device can send an authentication request, ie, AUTHENTICATION_REQUEST, to the MM layer of the mobile terminal. For example, the MM layer of the network device can send a random number to the MM layer of the mobile terminal. The network device side has an authentication algorithm, and a result can be obtained by the authentication algorithm and the random number; the mobile terminal side also has an authentication algorithm, and a result can also be obtained by the authentication algorithm and the random number.

After the MM layer of the mobile terminal receives the authentication request sent by the MM layer of the network device, the MM layer of the mobile terminal may send an authentication response, ie, AUTHENTICATION_RESPONSE, to the MM layer of the network device. The authentication response may be a result obtained according to an authentication algorithm on the mobile terminal side and the above random number.

The network MSC sends an Authentication Request message to the mobile station to trigger the authentication process. The system includes a random number (RAND) and a CKSN number in the authentication request message, and the RAND has a total of 128 bits. The user key Ki on the SIM card and the random number are subjected to the A3 algorithm of the GSM specification to generate a 32-bit response number SRES (and At the same time, the MS will also use Ki and RAND to obtain a 64-bit Kc through the A8 algorithm, and save it in the SIM card, and then decide whether to activate the encrypted transmission according to the system command. The MS then passes an authentication response (Authentication response). The message sends the SERS back to the system. Since the Ki value exists as the user data in the VLR or HLR, the same A3 and A8 algorithms as the MS are also performed on the network side, and a SRES number and Kc are generated in the VLR, and the network side compares the two SRES values. If the authentication is successful, the access is allowed to access the network. After that, the MSC will continue to trigger the encryption process. If the authentication fails, the system will refuse to continue accessing the MS. At this point the authentication process ends.

Further, the connection between the call control (CC, Call Control) layer of the mobile terminal and the CC layer of the network device can be further performed.

If the third response message corresponding to the second random access request sent by the second target cell is not received within the time period set by the T3126 timer, that is, if the T3126 timer is not received within the time period set by the timer To the third response message corresponding to the second random access request sent on the Cell-B, the target cell may be in the target cell except the first target cell and the second target cell. The device sends a random access request corresponding to each target cell, and after receiving the corresponding response message, determines that the access network is successful, otherwise determines that the access network fails.

As shown in FIG. 6, it is another schematic diagram of initiating a random access request. In FIG. 6, the Radio Resource Control (RRC) layer of LTE may send a paging request message to the RRC layer of the mobile terminal. Next, the Etitled Managed Message (EMM) layer of the mobile terminal may send a service request message, that is, Service Request Msg, to the RRC layer of the mobile terminal. Then, the RRC layer of the mobile terminal may send an RRC connection setup request, that is, UL_CCCH/RRC Connection Request, to the Medium Access Control (MAC) layer of the mobile terminal. Next, the MAC layer of the mobile terminal may send an RRC connection setup, ie, DL_CCCH/RRC Connection Setup, to the RRC layer of the mobile terminal. Then, the RRC layer of the mobile terminal can send an RRC connection setup complete, ie, UL_DCCH/RRC Connection Setup Complete, to the MAC layer of the mobile terminal.

Next, the EMM layer of the LTE may send a CS Service Notification message, ie, CS Service Notification Msg, to the EMM layer of the mobile terminal. Then, the EMM layer of the mobile terminal can send an extended service request message, that is, Extended service request Msg, to the EMM layer of the LTE. Next, the RRC layer of the LTE may send an RRC connection release, ie, DL_DCCH/RRC Connection Release, to the RRC layer of the mobile terminal.

The MM layer of the mobile terminal may send a first paging response message, that is, a Paging Response, to the RR layer of the mobile terminal. At the same time, you can start the T3126 timer to start timing, that is, you can start the T3126 Timer to start timing. The T3126 timer can be set for a period of time.

The RR layer of the mobile terminal may send a downlink random access request, that is, DL_RANDOM_ACCESS_REQ, to L2 of the mobile terminal. That is, the RR layer of the mobile terminal can send a channel request, that is, a Channel Request, to the mobile terminal's L2. Next, the L2 of the mobile terminal can be triggered to send the first random access request to the L2 of the network side. For example, the first random access request can be sent to the network side on Cell-A.

During the time period set by the T3126 timer, if the mobile terminal sends the first random access request to the network side on the Cell-A, and does not receive the first response corresponding to the first random access request. The message is the immediate assignment of the message. The mobile terminal can send a second random access request to the network side on the Cell-A. If the immediate assignment message corresponding to the second random access request is not received, the mobile terminal may send a third random access request to the network side on the Cell-A. By analogy, the mobile terminal can send multiple random access requests to the network side on Cell-A.

If the immediate assignment message corresponding to the first random access request sent on the Cell-A is not received within the time period set by the T3126 timer, the mobile terminal may determine the second target cell, and in the The second target cell sends a second random access request to the network device. That is, the random access request may be sent to the network side again on the second target cell. The second target cell and the first target cell may belong to the same location area, or may not belong to the same location area. For example, the Cell-B in the location area to which the Cell-A belongs may be used as the second target cell, that is, the random access request may be sent to the network side again on the Cell-B.

For example, in FIG. 6, if an immediate assignment message corresponding to the first random access request transmitted on Cell-A is not received within the time period set by the T3126 timer, the mobile terminal may select Cell- B. And the MM layer of the mobile terminal can send the second response message, that is, the location area update message, that is, the Location Area Update, to the RR layer of the mobile terminal. At the same time, the T3126 timer can be started again to start timing, that is, the T3126 Timer can be started again to start timing. The T3126 timer can be set for a period of time.

The RR layer of the mobile terminal may again send a downlink random access request, that is, DL_RANDOM_ACCESS_REQ, to the mobile terminal's L2. That is, the RR layer of the mobile terminal can again send a channel request, that is, a Channel Request, to the mobile terminal's L2. Next, it is possible to trigger the L2 of the mobile terminal to send a random access request to the L2 of the network side again. For example, a second random access request can be sent to the network side on Cell-B.

Step 405: Determine whether a third response message corresponding to the second random access request sent by the network device is received before the target timer expires.

In step 405, it may be determined whether a third response message corresponding to the second random access request sent by the network device is received before the target timer expires. That is, it can be determined whether a third response message corresponding to the second random access request sent by the second target cell is received within the time period set by the T3126 timer. That is, it can be determined whether a third response message corresponding to the second random access request transmitted on the Cell-B is received within the time period set by the T3126 timer.

Step 406: If the third response message corresponding to the second random access request is received before the target timer expires, determining to access the network is successful.

In step 406, if a third response message corresponding to the second random access request is received before the target timer expires, that is, if it is received and sent on the Cell-B within the time period set by the T3126 timer The third response message corresponding to the second random access request may determine that the access network is successful.

Next, the RR layer of the mobile terminal may send a downlink setup request, ie DL_EST_REQ, to L2 of the mobile terminal. The downlink setup request includes a paging response, that is, a Paging Response. Then, L2 of the mobile terminal can send a Set Asynchronous Balanced Mode (SABM) frame to the L2 of the network side. The SABM frame may carry a paging response, that is, a Paging Response. If the L2 of the mobile terminal receives the UA frame within the preset time period, it may be determined that the L2 of the mobile terminal establishes a connection with the L2 of the network side.

The L2 on the network side may send a downlink establishment indication, that is, DL_EST_IND, to the RR layer on the network side. The downlink setup indication includes a paging response, that is, a Paging Response. Then, the RR layer on the network side can send an RR establishment confirmation, that is, RR_EST_CNF, to the MM layer on the network side. The RR establishment confirmation includes a paging response, that is, a Paging Response. So far, the paging response sent by the MM layer of the mobile terminal has reached the MM layer on the network side.

For the mobile terminal side, after the L2 of the mobile terminal receives the UA frame within the preset time period, that is, after determining that the L2 of the mobile terminal establishes a connection with the L2 of the network side, the L2 of the mobile terminal may be to the RR layer of the mobile terminal. Send a downlink setup acknowledgment, DL_EST_CNF. So far, since the mobile terminal has accessed the network, and the L2 of the mobile terminal is also connected with the L2 of the network side, it can be determined that the RR layer of the mobile terminal establishes a connection with the RR layer of the network side.

After determining that the RR layer of the mobile terminal establishes a connection with the RR layer on the network side, the RR layer of the mobile terminal may send an RR establishment indication, that is, RR_EST_IND, to the MM layer of the mobile terminal. The MM layer of the mobile terminal is notified by the RR establishment indication: the RR layer of the mobile terminal and the RR layer of the network side have established a connection. That is, the RR layer of the mobile terminal is in a connected state with the RR layer on the network side, that is, the Connected state.

Next, the MM layer on the network side can send an authentication request to the MM layer of the mobile terminal, that is, AUTHENTICATION_REQUEST. For example, the MM layer on the network side can send a random number to the MM layer of the mobile terminal. The network side has an authentication algorithm, and a result can be obtained by the authentication algorithm and the random number; the mobile terminal side also has an authentication algorithm, and a result can also be obtained by the authentication algorithm and the random number.

After the MM layer of the mobile terminal receives the authentication request sent by the MM layer on the network side, the MM layer of the mobile terminal may send an authentication response, that is, AUTHENTICATION_RESPONSE, to the MM layer on the network side. The authentication response may be a result obtained according to an authentication algorithm on the mobile terminal side and the above random number.

Further, the connection between the call control (CC, Call Control) layer of the mobile terminal and the CC layer on the network side can be further performed.

Step 407: If the third response message corresponding to the second random access request is not received before the target timer expires, in the target cell, except the first target cell and the second Each target cell outside the target cell sends a random access request corresponding to each target cell to the network device, until a corresponding response message is received, determining that the access to the network is successful, otherwise determining access The network failed.

In step 407, if a third response message corresponding to the second random access request sent in the second target cell is not received within the time period set by the T3126 timer, that is, if the timer is set in the T3126 timer If the third response message corresponding to the second random access request sent on the Cell-B is not received within the time period, each of the target cell may be divided by the first target cell and the second target cell. A random access request corresponding to each target cell is sent to the network device on the target cell, until the corresponding response message is received, and then the access network is determined to be successful, otherwise the access network fails.

A network access method of some embodiments of the present disclosure is applied to a mobile terminal. The mobile terminal may send the first random access request in the first target cell, and if the corresponding first response message is not received before the target timer expires, the second random access request may be sent on the second target cell. The success rate of the mobile terminal accessing the network is improved.

Referring to FIG. 7, FIG. 7 is a structural diagram of a mobile terminal according to some embodiments of the present disclosure. As shown in FIG. 7, the mobile terminal 700 includes a first sending module 701, a first determining module 702, and a second sending module 703.

The first sending module 701 is configured to: if receiving a paging request message sent by the network device, send, by the first target cell in the current location area, the first random access request to the network device;

The first determining module 702 is configured to determine whether the first response message corresponding to the first random access request sent by the network device is received before the target timer expires, where the first response message is Carrying radio resource configuration information for instructing the mobile terminal to communicate;

a second sending module 703, configured to determine a second target cell if the first response message corresponding to the first random access request is not received before the target timer expires, and in the second The target cell sends a second random access request to the network device.

Optionally, the first sending module 701 is specifically configured to:

And receiving, by the network device, the paging request message, sending, by using a non-access stratum of the mobile terminal to an access layer of the mobile terminal, in a first target cell in the current location area. a paging response message, the access layer transmitting the first random access request to the network device according to the first paging response message.

Optionally, the second sending module 703 is specifically configured to:

If the first response message corresponding to the first random access request is not received before the target timer expires, determining the second target cell to move to the mobile terminal through the non-access stratum of the mobile terminal The access layer of the terminal sends a second response message, and the access layer sends the second random access request to the network device according to the second response message.

Optionally, as shown in FIG. 8, the mobile terminal further includes:

The first determining module 704 is configured to determine the second response message according to a current signal type of the mobile terminal, where the signal type includes a GSM signal, a 3G signal, an LTE signal, or a 5G signal.

Optionally, as shown in FIG. 9, the first determining module 704 includes:

The first determining sub-module 7041 is configured to determine, when the current signal type of the mobile terminal is the GSM signal, that the second response message is a second paging response message;

The second determining sub-module 7042 is configured to determine, when the current signal type of the mobile terminal is the LTE signal, that the second response message is a location area update message.

Optionally, as shown in FIG. 10, the second sending module 703 includes:

a sorting sub-module 7031, configured to perform measurement on the target cell, and sort the target cell according to the measurement result;

The third determining submodule 7032 is configured to determine the second target cell according to the sorting result.

Optionally, as shown in FIG. 11, the mobile terminal further includes:

The second determining module 705 is configured to determine whether a third response message corresponding to the second random access request sent by the network device is received before the target timer expires;

The second determining module 706 is configured to determine that the access to the network is successful if a third response message corresponding to the second random access request is received before the target timer expires;

a third determining module 707, configured to remove, in the target cell, the first target cell, if a third response message corresponding to the second random access request is not received before the target timer expires And each target cell except the second target cell sends a random access request corresponding to each target cell to the network device, until a corresponding response message is received, determining that the network access succeeds Otherwise, it is determined that access to the network fails.

The mobile terminal 700 can implement various processes implemented by the mobile terminal in the method embodiments of FIG. 2 and FIG. 4, and details are not described herein again to avoid repetition. And if the mobile terminal 800 can send the first random access request in the first target cell, if the corresponding first response message is not received before the target timer expires, the second random access can be sent on the second target cell. request. The success rate of the mobile terminal accessing the network is improved.

Referring to FIG. 12, FIG. 12 is a structural diagram of a mobile terminal provided by an implementation of the present disclosure. As shown in FIG. 12, the mobile terminal 1200 includes: at least one processor 1201, a memory 1202, at least one network interface 1204, and a user interface 1203, and is stored in A network access control program running on the processor 1202 and operable on the processor 1201, the network access control program being executed by the processor 1201 to implement the steps of the network access method. The various components in mobile terminal 1200 are coupled together by bus system 1205. It will be appreciated that the bus system 1205 is used to implement connection communication between these components. The bus system 1205 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 1205 in FIG.

The user interface 1203 may include a display, a keyboard, or a pointing device (eg, a mouse, a track ball, a touch pad, or a touch screen, etc.).

It will be appreciated that memory 1202 in some embodiments of the present disclosure may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. Volatile memory can be a random access memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (SDRAM) And direct memory bus random access memory (DRRAM). The memory 1202 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some implementations, the memory 1202 stores elements, executable modules or data structures, or a subset thereof, or their extended set: an operating system 12021 and an application 12022.

The operating system 12021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 12022 includes various applications, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services. Programs that implement some of the embodiment methods of the present disclosure may be included in the application 12022.

In some embodiments of the present disclosure, by calling a program or an instruction stored in the memory 1202, specifically, a program or an instruction stored in the application 12022, the processor 1201 is configured to:

The methods disclosed in some embodiments of the present disclosure described above may be applied to or implemented by the processor 1201. Processor 1201 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1201 or an instruction in a form of software. The processor 1201 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in some embodiments of the present disclosure may be implemented or performed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in connection with some embodiments of the present disclosure may be directly embodied by the hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1202, and the processor 1201 reads the information in the memory 1202 and completes the steps of the above method in combination with its hardware.

It will be appreciated that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.

For a software implementation, the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein. The software code can be stored in memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

Optionally, the processor 1201 performs the step of: sending the first random access request to the network device in the first target cell in the current location area, if the paging request message sent by the network device is received, including:

Optionally, the processor 1201 performs, if the first response message corresponding to the first random access request is not received before the target timer expires, determining a second target cell, where The step of the second target cell sending the second random access request to the network device includes:

Optionally, if the first response message corresponding to the first random access request is not received before the target timer expires, determining the second target cell, by using the mobile terminal Before the step of the access layer sending the second response message to the access layer of the mobile terminal, the processor 1201 is further configured to:

Determining the second response message according to a current signal type of the mobile terminal, where the signal type includes a global mobile communication system GSM signal, a third generation mobile communication technology 3G signal, a long term evolution LTE signal, or a next generation mobile communication Technical 5G signal.

Optionally, the step of the processor 1201 performing the determining, according to the current signal type of the mobile terminal, the second response message, includes:

Optionally, the processor 1201 performs the step of determining the second target cell if the first response message corresponding to the first random access request is not received before the target timer expires, including:

The second target cell is determined according to the ranking result.

Optionally, after the step of the second target cell sending the second random access request to the network device, the processor 1201 is further configured to:

Determining whether a third response message corresponding to the second random access request sent by the network device is received before the target timer expires;

If the third response message corresponding to the second random access request is received before the target timer expires, determining to access the network is successful;

If the third response message corresponding to the second random access request is not received before the target timer expires, in the target cell, except the first target cell and the second target cell Each of the target cells sends a random access request corresponding to each of the target cells to the network device, until a corresponding response message is received, determining that the access to the network is successful, otherwise determining to access the network failure.

Optionally, the processor 1201 performs, that the target cell includes a cell in a current location area and/or a cell in another location area, where the target cell is N, where N is an integer greater than 1.

The mobile terminal 1200 can implement various processes implemented by the mobile terminal in the foregoing embodiment. To avoid repetition, details are not described herein again. And the mobile terminal 1200 may send the first random access request in the first target cell, and if the corresponding first response message is not received before the target timer expires, the second random access request may be sent on the second target cell. . The success rate of the mobile terminal accessing the network is improved.

Some embodiments of the present disclosure also provide a computer readable storage medium, wherein the computer readable storage medium stores a network access control program, and when the network access control program is executed by the processor The steps of implementing the above network access method.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present disclosure.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of some embodiments of the present disclosure.

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

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, a portion of the technical solution of the present disclosure that contributes in essence or to the related art or a part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above is only the specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the disclosure. It should be covered within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosure should be determined by the scope of the claims.

Claims

A network access method is applied to a mobile terminal, and the method includes:

Receiving a paging request message sent by the network device, sending, by the first target cell in the current location area, the first random access request to the network device;

Determining whether the first response message corresponding to the first random access request sent by the network device is received before the target timer expires, where the first response message carries the mobile terminal for indicating the mobile terminal Radio resource configuration information for communication;

Determining a second target cell and transmitting the second target cell to the network device if the first response message corresponding to the first random access request is not received before the target timer expires Second random access request.
The network access method according to claim 1, wherein the first target cell in the current location area sends a first random access request to the network device if the paging request message sent by the network device is received Steps include:

And receiving, by the network device, the paging request message, sending, by using a non-access stratum of the mobile terminal to an access layer of the mobile terminal, in a first target cell in the current location area. a paging response message, the access layer transmitting the first random access request to the network device according to the first paging response message.
The network access method according to claim 1, wherein the second target is determined if a first response message corresponding to the first random access request is not received before the target timer expires And the step of sending, by the second target cell, the second random access request to the network device, including:

If the first response message corresponding to the first random access request is not received before the target timer expires, determining the second target cell to move to the mobile terminal through the non-access stratum of the mobile terminal The access layer of the terminal sends a second response message, and the access layer sends the second random access request to the network device according to the second response message.
The network access method according to claim 3, wherein the second response message is determined if the first response message corresponding to the first random access request is not received before the target timer expires And the method further includes: before the step of sending, by the non-access stratum of the mobile terminal, the second response message to the access layer of the mobile terminal, the method further includes:

Determining the second response message according to a current signal type of the mobile terminal, where the signal type includes a global mobile communication system GSM signal, a third generation mobile communication technology 3G signal, a long term evolution LTE signal, or a next generation mobile communication Technical 5G signal.
The network access method according to claim 4, wherein the step of determining the second response message according to a current signal type of the mobile terminal comprises:

When the current signal type of the mobile terminal is the GSM signal, determining that the second response message is a second paging response message;

When the current signal type of the mobile terminal is the LTE signal, determining that the second response message is a location area update message.
The network access method according to claim 1, wherein the second target is determined if a first response message corresponding to the first random access request is not received before the target timer expires The steps of the community include:

Performing measurement on the target cell, and sorting the target cell according to the measurement result;

The second target cell is determined according to the ranking result.
The network access method of claim 6, wherein after the step of the second target cell sending a second random access request to the network device, the method further comprises:

Determining whether a third response message corresponding to the second random access request sent by the network device is received before the target timer expires;

If the third response message corresponding to the second random access request is received before the target timer expires, determining to access the network is successful;

If the third response message corresponding to the second random access request is not received before the target timer expires, in the target cell, except the first target cell and the second target cell Each of the target cells sends a random access request corresponding to each of the target cells to the network device, until a corresponding response message is received, determining that the access to the network is successful, otherwise determining to access the network failure.
The network access method according to claim 6 or 7, wherein

The target cell includes cells in a current location area and/or cells in other location areas, where the target cell is N, where N is an integer greater than one;

The first target cell and the second target cell are all target cells in the N target cells, and the first target cell and the second target cell are located in the same location area or different location areas.
A mobile terminal includes:

a first sending module, configured to: when receiving a paging request message sent by the network device, send, by the first target cell in the current location area, the first random access request to the network device;

a first determining module, configured to determine whether a first response message corresponding to the first random access request sent by the network device is received before the target timer expires, where the first response message is carried There is radio resource configuration information for instructing the mobile terminal to communicate;

a second sending module, configured to determine a second target cell if the first response message corresponding to the first random access request is not received before the target timer expires, and in the second target The cell sends a second random access request to the network device.
The mobile terminal of claim 9, wherein the first sending module is specifically configured to:

And receiving, by the network device, the paging request message, sending, by using a non-access stratum of the mobile terminal to an access layer of the mobile terminal, in a first target cell in the current location area. a paging response message, the access layer transmitting the first random access request to the network device according to the first paging response message.
The mobile terminal of claim 9, wherein the second sending module is specifically configured to:

If the first response message corresponding to the first random access request is not received before the target timer expires, determining the second target cell to move to the mobile terminal through the non-access stratum of the mobile terminal The access layer of the terminal sends a second response message, and the access layer sends the second random access request to the network device according to the second response message.
The mobile terminal of claim 11, further comprising:

The first determining module is configured to determine the second response message according to a current signal type of the mobile terminal, where the signal type includes a GSM signal, a 3G signal, an LTE signal, or a 5G signal.
The mobile terminal of claim 12, wherein the first determining module comprises:

a first determining submodule, configured to: when the current signal type of the mobile terminal is the GSM signal, determine that the second response message is a second paging response message;

And a second determining submodule, configured to determine, when the current signal type of the mobile terminal is the LTE signal, that the second response message is a location area update message.
The mobile terminal of claim 9, wherein the second sending module comprises:

a sorting submodule, configured to perform measurement on the target cell, and sort the target cell according to the measurement result;

And a third determining submodule, configured to determine the second target cell according to the sorting result.
The mobile terminal of claim 14, further comprising:

a second determining module, configured to determine whether a third response message corresponding to the second random access request sent by the network device is received before the target timer expires;

a second determining module, configured to determine that the access to the network is successful if a third response message corresponding to the second random access request is received before the target timer expires;

a third determining module, configured to: before the target timer expires, fail to receive a third response message corresponding to the second random access request, in the target cell, except the first target cell and And each target cell except the second target cell sends a random access request corresponding to each target cell to the network device, and after receiving the corresponding response message, determining that the access to the network is successful, Otherwise it is determined that access to the network has failed.
The mobile terminal according to claim 14 or 15, wherein the target cell comprises a cell in a current location area and/or a cell in another location area, the target cell being N, where N is an integer greater than one ;

The first target cell and the second target cell are all target cells in the N target cells, and the first target cell and the second target cell are located in the same location area or different location areas.
A mobile terminal includes a processor, a memory, and a network access program stored on the memory and operable on the processor, the network access program being executed by the processor to implement the claim 1 The steps of the network access method of any one of 8.
A computer readable storage medium, wherein the computer readable storage medium has a network access program stored thereon, and the network access program is executed by the processor to implement any one of claims 1 to 8 The steps of the network access method described.