CN108200632B

CN108200632B - Method for accessing terminal to LTE network and terminal

Info

Publication number: CN108200632B
Application number: CN201810048783.9A
Authority: CN
Inventors: 刘辉
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-01-18
Filing date: 2018-01-18
Publication date: 2020-09-15
Anticipated expiration: 2038-01-18
Also published as: CN108200632A

Abstract

The invention provides a method for accessing a terminal to an LTE network and the terminal, wherein the method comprises the following steps: in the process that a T3402 timer is started and is not overtime, when the cell registration of a terminal in other networks except an LTE network is detected, cell information of a terminal registration cell is obtained at intervals of preset time; detecting whether the LTE network can be searched again or not according to cell information of a terminal registration cell acquired at intervals of preset time; when the situation that the LTE network can be searched again is detected, at least one target LTE cell obtained by searching the LTE network is obtained; and sending an access request to the at least one target LTE cell so that the terminal can access one of the at least one target LTE cell. The embodiment of the invention enables the terminal to be accessed and resided in the LTE network before the T3402 timer is overtime.

Description

Method for accessing terminal to LTE network and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for accessing a terminal to an LTE network and a terminal.

Background

If there are network coverage or configuration abnormalities in some scenarios, it may affect the terminal to normally reside in an LTE (long term Evolution) network. For example: in a certain LTE cell, when a terminal initiates an attachment (Attach) camping or Tracking Area Update (TAU), in a random access process, because a certain msg message (such as msg2 message) of a network response cannot be received, the terminal may be affected to normally camp on the LTE network; for another example, after the Radio Resource Control (RRC) connection is established through random access, the LTE network does not continue to initiate subsequent operations such as authentication but directly releases the RRC connection, which may affect the terminal to normally reside in the LTE network; if the terminal repeatedly initiates Attach or TAU due to the abnormal conditions and the like, the T3402 timer is started when the number of failures reaches 5 times and the starting condition is satisfied.

In the prior art, although an abnormal cell can be disabled for a period of time by prohibiting the abnormal cell before the T3402 timer is started, and then another cell is replaced to try to initiate an Attach or TAU procedure, this can only prevent the T3402 timer from being started, and once the start of the T3402 timer cannot be avoided, the LTE network cannot be recovered in time even if the cell is immediately moved to a normal area under the condition of dynamic test, and the LTE network can only be recovered after the T3402 timer is overtime. In addition, if the T3402 timer is changed to a shorter timing time or the timer is cancelled, a serious influence in power consumption may be caused.

In summary, there is a problem in the prior art that the LTE network cannot be accessed before the T3402 timer expires.

Disclosure of Invention

The invention aims to provide a method for accessing a terminal to an LTE network and the terminal, which are used for solving the problem that the LTE network cannot be accessed before a T3402 timer is overtime in the prior art.

In order to solve the above technical problem, the embodiment of the present invention is implemented as follows: in a first aspect, an embodiment of the present invention provides a method for a terminal to access an LTE network, where the method includes:

in the process that a T3402 timer is started and is not overtime, when the cell registration of a terminal in other networks except an LTE network is detected, cell information of a terminal registration cell is obtained at intervals of preset time;

detecting whether the LTE network can be searched again or not according to cell information of the terminal registration cell acquired at intervals of preset time;

when the situation that the LTE network can be searched again is detected, at least one target LTE cell obtained by searching the LTE network is obtained;

and sending an access request to the at least one target LTE cell so as to enable the terminal to access one of the at least one target LTE cell.

In a second aspect, an embodiment of the present invention provides a terminal, including:

the first acquisition module is used for acquiring cell information of a terminal registration cell at intervals of preset time when detecting that the terminal registers in cells of other networks except an LTE network in the process that the T3402 timer is started and is not overtime;

the detection module is used for detecting whether the LTE network can be searched again or not according to the cell information of the terminal registration cell acquired at preset time intervals;

the second acquisition module is used for acquiring at least one target LTE cell obtained by searching the LTE network when the condition that the LTE network can be searched again is detected;

a sending module, configured to send an access request to the at least one target LTE cell, so that the terminal accesses one of the at least one target LTE cell.

In a third aspect, an embodiment of the present invention provides a terminal, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the method for accessing the terminal to the LTE network.

According to the embodiment of the invention, when the T3402 timer is started and is not overtime, when the cell registration of the terminal in other networks except the LTE network is detected, whether the LTE network can be searched again is detected according to the cell information of the terminal registration cell acquired at preset time intervals, at least one target LTE cell is searched when the LTE network can be searched again is detected, and then the access request is sent to the searched at least one target LTE cell, so that the possibility that the terminal is accessed to the LTE network before the T3402 timer is started but overtime is provided, the terminal can be accessed to and resided in the LTE network before the T3402 timer is overtime, and the problem that the terminal cannot be accessed to the LTE network before the T3402 timer is overtime in the prior art is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a flowchart illustrating steps of a method for a terminal to access an LTE network according to an embodiment of the present invention;

fig. 2 shows a block diagram of modules of a terminal in an embodiment of the invention;

fig. 3 shows a block diagram of a terminal in an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, a flowchart of steps of a method for a terminal to access an LTE network in an embodiment of the present invention is shown, where the method includes the following steps:

step 101, in the process that the timer T3402 is started and not overtime, when detecting that the terminal registers in a cell in a network other than the LTE network, acquiring cell information of the terminal registration cell at intervals of preset time.

Specifically, before the T3402 timer is started, the terminal may select an LTE cell meeting the condition according to a preset network searching rule to attempt to initiate Attach or TAU, and then determine whether the start condition of the T3402 timer is reached.

It should be noted that the preset network searching rule includes, but is not limited to, a protocol original rule and an optimized network selection process. In addition, the starting conditions of the T3402 timer include, but are not limited to, 5 times of Attach or TAU failure originally required by the protocol, failure after various barred (Bar) cell optimizations, and optimization of various retry number modifications.

When the starting condition of the timer T3402 is not met, for example, LTE registration is suspended in a mode of normally registering to an LTE network according to a standard flow, switching a network mode to be 3G network priority or starting an offline mode, and the like, and then a subsequent process is completed according to the standard flow.

When the starting condition of the T3402 timer is reached, in the process that the T3402 timer is started and is not overtime, whether the terminal is registered in a cell in another network except the LTE network may be detected, where the another network may include a 2G network or a 3G network.

When detecting that the terminal registers in a cell in a network other than the LTE network, the cell information of the terminal registered cell may be acquired every preset time.

Specifically, the cell information may include at least one of Radio Access Technologies (RAT), a cell ID, and signal strength information. The Signal Strength information may include at least one of a Received Signal Strength Indication (RSSI), a Reference Signal Receiving Power (RSRP), and a Signal-to-NOISE RATIO (SNR).

It should be noted that the preset time of the interval may range from 5s to 30 s. Therefore, the performance or the operation of other modules cannot be influenced by acquiring information too frequently due to too short intervals, and the time for the terminal to access the LTE network cannot be influenced by the longer operation time of the whole operation process due to too long intervals.

Step 102, detecting whether the LTE network can be searched again according to the cell information of the terminal registration cell acquired at every preset time interval.

In this step, specifically, when detecting whether the LTE network can be searched again according to the cell information of the terminal registration cell acquired at every preset time, the cell information of the first registration cell recorded at the first time and the cell information of the second registration cell recorded at the second time may be acquired, and then the cell information of the first registration cell and the cell information of the second registration cell are compared to determine whether the LTE network can be searched again. The second time is separated from the first time by a preset time, specifically, the first time may be a current time, and the second time is separated by the preset time before the current time; the cell information includes: at least one of radio access technology (RAT for short), cell identification (ID for short), and signal strength information.

When the cell information of the first registration cell is compared with the cell information of the second registration cell to determine whether the LTE network can be searched again, the following items may be included:

firstly, a first RAT of a first registration cell is compared with a second RAT of a second registration cell, and if a first comparison result obtained by comparison is that RAT switching is determined to occur, it is determined that the LTE network can be searched again. For example, the terminal registers in the 2G network when the T3402 timer is started, but resides in the 3G network at the current time, it may be considered that the change of the network environment causes the change of the resident network, that is, the RAT handover occurs, and it may be determined that the LTE network can be searched again at this time.

And secondly, if the first comparison result is that the RAT switching is not determined to occur, comparing the first ID of the first registered cell with the second ID of the second registered cell, and if the second comparison result obtained by comparison is that the LTE network can be searched again when the small cell switching is determined to occur. For example, when the T3402 timer is started, the terminal resides in a cell a of the 2G network, but at the current time, the terminal resides in a cell B of the 2G network, it may be considered that a change in the network environment causes a change in the resident network, that is, a cell handover occurs, and it may be determined that the LTE network can be searched again at this time.

And thirdly, if the second comparison result is that the cell switching is not determined, comparing the first signal strength information of the first registered cell with the second signal strength information of the second registered cell, and if the third comparison result obtained by comparison is that the cell signal strength changes and the cell signal strength change value is greater than a preset threshold value, judging that the LTE network can be searched again. For example, when the T3402 timer is started, the terminal resides in the a cell of the 2G network, and the terminal also resides in the a cell of the 2G network at the current time, but it is detected that the RSSI change value of the cell at the current time is more than 5db than that of the T3402 timer, it may be considered that the network environment change causes the change of the resident network, that is, the cell signal strength change value is greater than the preset threshold value, and it may be determined that the LTE network can be searched again at this time.

Therefore, whether the terminal has RAT switching when the first time is longer than the second time, whether the terminal has cell switching when the RAT switching does not occur, and whether the cell signal intensity change is larger than a preset threshold when the cell switching does not occur are sequentially used as conditions for judging whether the LTE network can be searched again, situations that the terminal is easy to search failure and increases power consumption when the terminal carries out blind and frequent search of the LTE cell are avoided, the terminal can carry out LTE network search when one condition is met, and whether the LTE network can be searched again is quickly judged.

And 103, acquiring at least one target LTE cell obtained by searching the LTE network when the condition that the LTE network can be searched again is detected.

In this step, specifically, when it is detected that the LTE network can be searched again, the LTE network is searched, and at least one target LTE cell obtained by the LTE network search is acquired.

When at least one target LTE cell obtained by searching the LTE network is obtained, when the condition that the LTE network can be searched again is detected, the identification information of all LTE cells obtained by searching the LTE network can be obtained and recorded; then acquiring identification information of the LTE abnormal cell causing the T3402 timer to be started; and finally, acquiring other LTE cells except the LTE abnormal cell in all the LTE cells according to the identification information of all the LTE cells and the identification information of the LTE abnormal cell, and recording the other LTE cells as the target LTE cell. Specifically, the identification information may include a Physical Cell Identifier (PCI) and a frequency point. Specifically, when the target LTE cell is obtained, other identification information excluding the identification information of the LTE abnormal cell in the identification information of all LTE cells may be determined, and then, other LTE cells corresponding to the other identification information may be recorded as the target LTE cell. Therefore, when the terminal sends the access request to at least one target LTE cell, the terminal does not send the access request to the LTE abnormal cell any more, and the situation that the access request is repeatedly sent to the LTE abnormal cell is avoided.

Here, when it is detected that the LTE network can be searched again and the LTE network search is performed, the LTE network search is performed without affecting the continuous timing of the T3402 timer, that is, after the continuous timing of the T3402 timer.

In addition, specifically, when it is detected that the LTE network can be searched again, if the target LTE cell is not searched during the LTE network search, the step of acquiring cell information of the terminal registration cell at intervals of a preset time is performed, so that whether the LTE network can be searched again can be continuously detected according to the newly acquired cell information of the terminal registration cell, and thus, the opportunity of accessing the LTE network before the time of the T3402 timer is exceeded is increased.

Of course, it should be noted herein that when detecting that the T3402 timer is overtime, it is required to clear the cell information of the terminal registration cell and the cell information of the target LTE cell, which are acquired at intervals of preset time, and to re-search the network according to the LTE protocol specification.

And 104, sending an access request to the at least one target LTE cell so that the terminal can access one of the at least one target LTE cell.

In this step, specifically, the access request may include an Attach request and a TAU request.

When the at least one target LTE cell is obtained, an access request can be sent to the at least one target LTE cell, so that the terminal can be accessed to one of the at least one target LTE cell, the opportunity that the terminal is successfully accessed to the LTE network before the T3402 timer is overtime is improved, and the LTE network service can be recovered in advance with higher probability.

In the embodiment, in the process that the T3402 timer is started and is not overtime, when it is detected that the terminal is registered in a network other than the LTE network, whether the LTE network can be searched again is detected according to cell information of the terminal registration cell acquired at preset time intervals, and when the LTE network can be searched again, at least one target LTE cell acquired by the LTE network search is acquired, and then an access request is sent to the at least one target LTE cell, so that the terminal is accessed to one of the at least one target LTE cell, and therefore, the possibility that the terminal is accessed to the LTE network before the T3402 timer is started but overtime is provided, and particularly, in a dynamic environment, the probability of restoring the LTE network service in advance is increased.

As shown in fig. 2, an embodiment of the present invention further provides a terminal, including:

a first obtaining module 201, configured to, in a process that a T3402 timer is started and is not overtime, when detecting that a terminal registers in a cell in a network other than an LTE network, obtain cell information of a terminal registration cell at every preset time interval;

a detecting module 202, configured to detect whether an LTE network can be searched again according to cell information of the terminal registration cell, which is obtained at preset time intervals;

a second obtaining module 203, configured to obtain at least one target LTE cell obtained by LTE network search when it is detected that the LTE network can be searched again;

a sending module 204, configured to send an access request to the at least one target LTE cell, so that the terminal accesses one of the at least one target LTE cell.

In the embodiment, in the process that the T3402 timer is started and is not overtime, when it is detected that the terminal is registered in a network other than the LTE network, whether the LTE network can be searched again is detected according to cell information of a terminal registration cell acquired at intervals of preset time, and when the LTE network can be searched again, at least one target LTE cell acquired by the LTE network search is acquired, and then an access request is sent to the at least one target LTE cell, so that the terminal is accessed to one of the at least one target LTE cell, thereby providing a possibility that the terminal is accessed to the LTE network before the T3402 timer is started but overtime, and particularly increasing a probability of restoring an LTE network service in advance in a dynamic environment.

Optionally, the detection module includes:

a first obtaining unit, configured to obtain cell information of a first registration cell recorded at a first time and cell information of a second registration cell recorded at a second time; wherein a preset time is separated between the second time and the first time, and the cell information includes: at least one of a radio access technology RAT, a cell identification ID, and signal strength information;

and the detection unit is used for comparing the cell information of the first registration cell with the cell information of the second registration cell and judging whether the LTE network can be searched again.

Optionally, the detection unit includes:

the first detection subunit is configured to compare a first RAT of the first registration cell with a second RAT of the second registration cell, and determine that the LTE network can be searched again if a first comparison result obtained by the comparison indicates that RAT handover is determined to occur;

the second detection subunit is configured to compare the first ID of the first registration cell with the second ID of the second registration cell if the first comparison result indicates that RAT handover is not performed, and determine that the LTE network can be searched again if the second comparison result obtained by the comparison indicates that cell handover is performed;

and the third detection subunit is configured to compare the first signal strength information of the first registered cell with the second signal strength information of the second registered cell if the second comparison result indicates that cell handover does not occur, and determine that the LTE network can be searched again if the third comparison result obtained by comparison indicates that the cell signal strength changes and the cell signal strength change value is greater than a preset threshold value.

Optionally, the second obtaining module includes:

the second acquisition unit is used for acquiring and recording the identification information of all LTE cells obtained by searching the LTE network when the situation that the LTE network can be searched again is detected;

a third obtaining unit, configured to obtain identifier information of an LTE abnormal cell that causes the T3402 timer to start;

and a fourth obtaining unit, configured to obtain, according to the identification information of all LTE cells and the identification information of the LTE abnormal cell, other LTE cells except the LTE abnormal cell in all LTE cells, and record the other LTE cells as target LTE cells.

Optionally, the terminal further includes:

and the processing module is used for triggering the first acquisition module to acquire the cell information of the terminal registration cell at preset time intervals if the target LTE cell is not searched during the LTE network search.

In the embodiment, in the process that the T3402 timer is started and is not overtime, when it is detected that the terminal is registered in a network other than the LTE network, whether the LTE network can be searched again is detected according to cell information of a terminal registration cell acquired at every preset time, and when the LTE network can be searched again, at least one target LTE cell acquired by the LTE network search is acquired, and then an access request is sent to the at least one target LTE cell, so that the terminal is accessed to one of the at least one target LTE cell, the possibility that the terminal is accessed to the LTE network before the T3402 timer is started but overtime is provided, particularly, in a dynamic environment, the probability of restoring the LTE network service in advance is increased, and the terminal can be accessed to the LTE network in advance.

Fig. 3 is a schematic diagram of a hardware structure of a terminal implementing various embodiments of the present invention. The terminal 300 includes but is not limited to: radio frequency unit 301, network module 302, audio output unit 303, input unit 304, sensor 305, display unit 306, user input unit 307, interface unit 308, memory 309, processor 310, and power supply 311. Those skilled in the art will appreciate that the terminal structure shown in fig. 3 is not intended to be limiting and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The processor 310 is configured to, in a process that the T3402 timer is started and is not overtime, when detecting that the terminal registers in a cell in a network other than the LTE network, obtain cell information of the terminal registration cell at every preset time interval; detecting whether the LTE network can be searched again or not according to cell information of the terminal registration cell acquired at intervals of preset time; when the situation that the LTE network can be searched again is detected, at least one target LTE cell obtained by searching the LTE network is obtained; and sending an access request to the at least one target LTE cell so as to enable the terminal to access one of the at least one target LTE cell.

In the process that the T3402 timer is started and is not overtime, when it is detected that the terminal is registered in a network other than the LTE network, whether the LTE network can be searched again is detected according to cell information of a terminal registration cell acquired at every preset time, and when the LTE network can be searched again, at least one target LTE cell acquired by the LTE network search is acquired, and then an access request is sent to the at least one target LTE cell, so that the terminal is accessed to one of the at least one target LTE cell, a possibility that the terminal is accessed to the LTE network before the T3402 timer is started but overtime is provided, particularly, in a dynamic environment, a probability of restoring an LTE network service in advance is increased, and the terminal can be accessed to the LTE network in advance.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 301 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 310; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 301 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 301 can also communicate with a network and other devices through a wireless communication system.

The terminal provides wireless broadband internet access to the user through the network module 302, such as helping the user send and receive e-mails, browse web pages, access streaming media, and the like.

The audio output unit 303 may convert audio data received by the radio frequency unit 301 or the network module 302 or stored in the memory 309 into an audio signal and output as sound. Also, the audio output unit 303 may also provide audio output related to a specific function performed by the terminal 300 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 303 includes a speaker, a buzzer, a receiver, and the like.

The input unit 304 is used to receive audio or video signals. The input Unit 304 may include a Graphics Processing Unit (GPU) 3041 and a microphone 3042, and the graphics processor 3041 processes image data of a still picture or video obtained by an image capturing apparatus (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 306. The image frames processed by the graphic processor 3041 may be stored in the memory 309 (or other storage medium) or transmitted via the radio frequency unit 301 or the network module 302. The microphone 3042 may receive sounds and may be capable of processing such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 301 in case of the phone call mode.

The terminal 300 also includes at least one sensor 305, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 3061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 3061 and/or a backlight when the terminal 300 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 305 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 306 is used to display information input by the user or information provided to the user. The Display unit 306 may include a Display panel 3061, and the Display panel 3061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 307 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 307 includes a touch panel 3071 and other input devices 3072. The touch panel 3071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 3071 (e.g., operations by a user on or near the touch panel 3071 using a finger, a stylus, or any suitable object or attachment). The touch panel 3071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 310, and receives and executes commands sent by the processor 310. In addition, the touch panel 3071 may be implemented using various types, such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 307 may include other input devices 3072 in addition to the touch panel 3071. Specifically, the other input devices 3072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein.

Further, the touch panel 3071 may be overlaid on the display panel 3061, and when the touch panel 3071 detects a touch operation on or near the touch panel, the touch operation is transmitted to the processor 310 to determine the type of the touch event, and then the processor 310 provides a corresponding visual output on the display panel 3061 according to the type of the touch event. Although the touch panel 3071 and the display panel 3061 are shown as two separate components in fig. 3 to implement the input and output functions of the terminal, in some embodiments, the touch panel 3071 and the display panel 3061 may be integrated to implement the input and output functions of the terminal, which is not limited herein.

The interface unit 308 is an interface through which an external device is connected to the terminal 300. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 308 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 300 or may be used to transmit data between the terminal 300 and an external device.

The memory 309 may be used to store software programs as well as various data. The memory 309 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 309 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 310 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 309 and calling data stored in the memory 309, thereby performing overall monitoring of the terminal. Processor 310 may include one or more processing units; preferably, the processor 310 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 310.

The terminal 300 may further include a power supply 311 (such as a battery) for supplying power to various components, and preferably, the power supply 311 may be logically connected to the processor 310 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

In addition, the terminal 300 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, which includes a processor 310, a memory 309, and a computer program stored in the memory 309 and capable of running on the processor 310, and when the computer program is executed by the processor 310, the processes of the method embodiment for accessing the terminal to the LTE network are implemented, and the same technical effect can be achieved, and details are not described here to avoid repetition.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the embodiment of the method for accessing the terminal to the LTE network, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for a terminal to access an LTE network is characterized by comprising the following steps:

sending an access request to the at least one target LTE cell so that the terminal can access one of the at least one target LTE cell;

the step of acquiring at least one target LTE cell obtained by searching the LTE network when the condition that the LTE network can be searched again is detected comprises the following steps:

when the situation that the LTE network can be searched again is detected, acquiring and recording identification information of all LTE cells obtained by searching the LTE network;

acquiring identification information of an LTE abnormal cell causing the T3402 timer to be started;

and acquiring other LTE cells except the LTE abnormal cell in all the LTE cells according to the identification information of all the LTE cells and the identification information of the LTE abnormal cell, and recording the other LTE cells as target LTE cells.

2. The method of claim 1, wherein the step of detecting whether the LTE network can be searched again according to the cell information of the terminal registration cell acquired at every preset time includes:

acquiring cell information of a first registered cell recorded at a first time and cell information of a second registered cell recorded at a second time; wherein a preset time is separated between the second time and the first time, and the cell information includes: at least one of a radio access technology RAT, a cell identification ID, and signal strength information;

and comparing the cell information of the first registration cell with the cell information of the second registration cell, and judging whether the LTE network can be searched again.

3. The method of claim 2, wherein the step of comparing the cell information of the first registration cell with the cell information of the second registration cell to determine whether the LTE network can be searched again comprises:

comparing the first RAT of the first registered cell with the second RAT of the second registered cell, and if the first comparison result obtained by comparison is that RAT switching is determined to occur, judging that the LTE network can be searched again;

if the first comparison result is that RAT switching is not determined to occur, comparing a first ID of the first registered cell with a second ID of the second registered cell, and if the second comparison result obtained by comparison is that the switching of the cells is determined to occur, judging that the LTE network can be searched again;

and if the second comparison result is that cell switching is not determined, comparing the first signal strength information of the first registered cell with the second signal strength information of the second registered cell, and if a third comparison result obtained by comparison is that cell signal strength changes and the cell signal strength change value is greater than a preset threshold value, judging that the LTE network can be searched again.

4. The method of claim 1, wherein when it is detected that the LTE network can be searched again, the method further comprises:

if the target LTE cell is not searched during the LTE network search, the step of acquiring the cell information of the terminal registration cell at intervals of preset time is carried out.

5. A terminal, comprising:

a sending module, configured to send an access request to the at least one target LTE cell, so that a terminal accesses one of the at least one target LTE cell;

the second acquisition module includes:

6. The terminal of claim 5, wherein the detection module comprises:

7. The terminal of claim 6, wherein the detecting unit comprises:

8. The terminal of claim 5, further comprising:

9. A terminal comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method of a terminal accessing an LTE network according to any of claims 1 to 4.