WO2023060988A1

WO2023060988A1 - Reestablishment method in communication abnormality, terminal device, and storage medium

Info

Publication number: WO2023060988A1
Application number: PCT/CN2022/108542
Authority: WO
Inventors: 麻鹏
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-10-15
Filing date: 2022-07-28
Publication date: 2023-04-20
Also published as: CN113825163A

Abstract

Disclosed in embodiments of the present application are a reestablishment method in a communication abnormality, a terminal device, and a storage medium, used for reestablishing when a current serving cell accessed by the terminal device is abnormal and a signal is normal, thereby improving the communication abnormality recovery capability of the terminal device. The method in the embodiments of the present application comprises: when it is monitored that the current serving cell accessed by the terminal device is abnormal, the signal is normal, and a network device is not configured with other cells/measurement results of the other cells do not meet a measurement threshold, selecting a target cell from cells meeting a first condition; and releasing an RRC connection of the current serving cell, and initiating a reestablishment request to the target cell, wherein the first condition comprises: an S criterion; belonging to a same base station with the current serving cell; and cells in a historical cell maintenance table, the historical cell maintenance table comprising N recently registered cells, and/or a cell having reference signal received power greater than a power threshold, N being an integer greater than 0.

Description

Reconstruction method, terminal equipment and storage medium when communication is abnormal

This application claims the priority of the Chinese patent application with the application number 2021112024596 and the application title "reconstruction method, terminal equipment and storage medium when communication is abnormal" submitted to the China Patent Office on October 15, 2021, the entire content of which is incorporated by reference incorporated in this application.

technical field

The present application relates to the communication field, and in particular to a reconstruction method, a terminal device and a storage medium when the communication is abnormal.

Background technique

With the development of modern network communications, the advent of the 5G era and the subsequent 6G era, data services are the most frequently used services and the services that users are most concerned about; and due to the immaturity of network resources and the large number of local users resulting in network resource congestion, etc., There will be some exceptions in the data business. In the existing 3GPP protocol, there are some schemes on the network side, such as actively scheduling each user equipment (User Equipment, UE) for handover, so as to achieve the effect of recovering the state of the terminal equipment from an abnormality. Mainstream first-line terminal factories also have certain means to monitor abnormalities, and adopt some recovery methods when abnormalities occur.

However, the recovery strategy of the existing terminal equipment is relatively single, and the means are relatively rough. For example: when data abnormality occurs, trigger data registration, and then re-register data; or, by switching flight mode. These methods are indeed helpful in particularly serious scenarios, but the side effects are also more obvious, such as an increase in the call failure rate of the terminal, and a decrease in the paging success rate.

Contents of the invention

The embodiment of the present application provides a reconstruction method when the communication is abnormal, a terminal device and a storage medium, which are used for reconstruction when the current serving cell accessed by the terminal device is abnormal and the signal is normal, so as to improve the recovery ability of the terminal device for abnormal communication .

The first aspect of the present application provides a reconstruction method when the communication is abnormal, which may include:

When the current serving cell accessed by the terminal device is monitored to be abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, select the target cell from the cells that meet the first condition;

Release the RRC connection of the current serving cell, and initiate a reestablishment request to the target cell;

Wherein, the first condition includes:

S criterion;

belong to the same base station as the current serving cell;

And it is a cell in the historical cell maintenance table, the historical cell maintenance table includes the last registered N cells, and/or, the cell whose reference signal received power is greater than the power threshold, and N is an integer greater than 0.

The second aspect of the present application provides a terminal device, which may include:

The selection module is used for monitoring the current serving cell accessed by the terminal device to be abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, in the cell that meets the first condition Select the target area;

An establishment module, configured to release the RRC connection of the current serving cell, and initiate a reestablishment request to the target cell;

Wherein, the first condition includes:

S criterion;

belong to the same base station as the current serving cell;

The third aspect of the present application provides a terminal device, which may include:

a memory storing executable program code;

a processor coupled to the memory;

The processor invokes the executable program code stored in the memory, so that the processor correspondingly executes the method described in the first aspect.

Yet another aspect of the embodiments of the present application provides a computer-readable storage medium, including instructions, which, when run on a processor, cause the processor to execute the method described in the first aspect of the present application.

Still another aspect of the embodiments of the present invention discloses a computer program product, which, when running on a computer, causes the computer to execute the method described in the first aspect of the present application.

Still another aspect of the embodiments of the present invention discloses an application release platform, the application release platform is used to release computer program products, wherein, when the computer program products run on a computer, the computer is made to execute the first aspect of the present application the method described.

It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

In this embodiment of the application, if the current serving cell accessed by the terminal device is monitored to be abnormal, the signal strength is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, the first condition is met Select a target cell from among the cells; release the RRC connection of the current serving cell, and initiate a reestablishment request to the target cell; wherein, the first condition includes: S criterion; belongs to the same base station as the current serving cell; and is a cell in the historical cell maintenance table, the historical cell maintenance table includes the most recently registered N cells, and/or, the cell whose reference signal received power is greater than the power threshold, and N is an integer greater than 0. That is, when the current serving cell accessed by the terminal device is abnormal and the signal is normal, reconstruction can be performed to improve the recovery capability of the terminal device from abnormal communication.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that are required in the description of the embodiments and prior art. Obviously, the accompanying drawings in the following description are only some implementations of the present application For example, other drawings can also be obtained from these drawings.

FIG. 1A is a schematic flow diagram of RRC reconstruction in the 3GPP protocol;

FIG. 1B is a schematic flow diagram of RRC setting in the 3GPP protocol;

FIG. 1C is a schematic flow diagram of converting RRC reconstruction into RRC setting in the 3GPP protocol;

Fig. 2 is a schematic diagram of an embodiment of the reconstruction method when the communication is abnormal in the embodiment of the present application;

FIG. 3 is a schematic diagram of an embodiment of a terminal device in an embodiment of the present application;

FIG. 4 is a schematic diagram of another embodiment of a terminal device in the embodiment of the present application.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be described below in conjunction with the drawings in the embodiment of the application. Obviously, the described embodiment is only a part of the application Examples, but not all examples. Based on the embodiments in this application, all should belong to the protection scope of this application.

1. Radio Resource Control (RRC) reconstruction process

As shown in FIG. 1A , it is a schematic flow chart of RRC reestablishment in the 3GPP protocol. 1. The terminal device sends an RRC Reestablishment Request (RRC Reestablishment Request) to the network device; 2. The network device sends an RRC Reestablishment message (RRC Reestablishment) to the terminal device; 3. The terminal device then sends an RRC Reestablishment Complete message (RRC Reestablishment Complete) to the network device ). Thus, the RRC connection re-establishment (RRC connection re-establishment) process is completed.

2. RRC setting process

As shown in FIG. 1B , it is a schematic flow chart of RRC setting in the 3GPP protocol. The terminal device sends an RRC setup request (RRC Setup Request) to the network device; the network device sends an RRC setup message (RRC Setup) to the terminal device; the terminal device then sends an RRC setup complete message (RRC Setup Complete) to the network device. Thus, the RRC connection establishment (RRC connection establishment) process is completed.

3. RRC rebuilding to RRC setting process

As shown in FIG. 1C , it is a schematic flow chart of converting RRC reestablishment into RRC setting in the 3GPP protocol. The terminal device sends an RRC reestablishment request (RRC Reestablishment Request) to the network device; the network device sends an RRC setup message (RRC Setup) to the terminal device; the terminal device then sends an RRC setup complete message (RRC Setup Complete) to the network device. Thus, the RRC connection re-establishment (RRC connection re-establishment) fallback to RRC connection establishment (RRC connection establishment) process is completed.

The mobile terminal mainly involved in the embodiment of the present application may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) mobile terminal, an augmented reality (Augmented Reality, AR) Mobile terminals, wireless mobile terminals in industrial control, wireless mobile terminals in self driving, wireless mobile terminals in remote medical, wireless mobile terminals in smart grid Terminals, wireless mobile terminals in transportation safety, wireless mobile terminals in smart cities, or wireless mobile terminals in smart homes. In the following embodiments, the mobile terminal can be described by taking a mobile phone as an example.

As an example but not a limitation, in this embodiment of the application, the mobile terminal may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

This application mainly involves the refinement of communication abnormality recovery strategy. Using the reconstruction mechanism of 3GPP, in the identified and defined scene, select the appropriate target cell for RRC reconstruction, compatible with the network performance in the real network environment, and quickly try to restore services and improve user experience.

The following is a further description of the embodiment of the present application in the form of an embodiment. As shown in FIG. 2, it is a schematic diagram of an embodiment of the reconstruction method when the communication is abnormal in the embodiment of the present application, which may include:

201. When it is monitored that the current serving cell accessed by the terminal device is abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, select the target cell from the cells that meet the first condition .

Wherein, the first condition includes:

(1) S criterion;

(2) When the current serving cell is calculating the S criterion, the S value is the sum of the currently calculated value and the target offset;

(3) It is a cell in the historical cell maintenance table, the historical cell maintenance table includes N cells that have been registered recently, and/or, the cell whose reference signal received power is greater than the power threshold, and N is an integer greater than 0.

It can be understood that the cell satisfies the S criterion, that is, the received reference signal power Srxlev>0dB in the cell search and the received reference signal quality Squal>0dB in the cell search.

Optionally, when it is monitored that the current serving cell accessed by the terminal device is abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, in the cell that meets the first condition Selecting the target cell may include: when monitoring the abnormal duration of the current serving cell accessed by the terminal device reaches the first preset duration, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold In this case, the target cell is selected from the cells satisfying the first condition.

It is understood that abnormalities may include moderate abnormalities and severe abnormalities. It can be understood that if the downlink rate represented by the downlink data of the current serving cell is less than the first rate threshold and greater than the second rate threshold, it can be considered as a moderate abnormality; the downlink rate represented by the downlink data of the current serving cell is less than or equal to the second rate threshold , can be considered as a serious abnormality. Exemplarily, when there is a moderate abnormality, the downlink rate of the current serving cell is greater than 100k and less than 1M. In severe abnormality, the downlink rate of the current serving cell is less than or equal to 100k.

Exemplarily, when it is monitored that the abnormal duration of the current serving cell (such as Cell A) accessed by the terminal device reaches the first preset duration, the signal strength is normal (for example: the downlink rate is lower than 1M, the duration is 30 seconds, and the signal strength is between -80db or more), and the network device does not configure other cells or the measurement results of other cells do not reach the measurement threshold, select the target cell from the cells that meet the first condition.

Strategy 1. Optionally, when it is monitored that the current serving cell accessed by the terminal device is abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, the first Select the target cell from the cell of the conditions, which may include:

When it is monitored that the downlink rate represented by the downlink data of the current serving cell accessed by the terminal device is less than the first rate threshold and greater than the second rate threshold, the signal strength is greater than the strength threshold, and the network device is not configured with other cells/measurement results of other cells When the measurement threshold is not met, select the target cell from the cells satisfying the first condition;

The first condition also includes:

(4) marking the target duration for the current serving cell;

(5) and when the current serving cell calculates the S criterion, the S value is the sum of the currently calculated value and the target offset.

It can be understood that the target duration is marked for the current serving cell, that is, the current serving cell will not be selected as the target cell within the target duration.

Exemplarily, when it is monitored that the current serving cell (such as Cell A) accessed by the terminal device is moderately abnormal, the signal strength is normal (for example: the downlink rate is lower than 1M, the duration is 30 seconds, and the signal strength is above -80db) , and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, continuing to do business on Cell A at this time will inevitably affect user experience, and in the prior art, Cell A has good signal conditions , it is impossible for the network device to actively switch cells. In the embodiment of the present application, the RRC connection is released on Cell A, and the suboptimal cell Cell B outside Cell A is found as the target cell for RRC reconstruction.

It should be noted that, in the embodiment of the present application, the focus is on selecting the best target cell for RRC reconstruction. In the 3GPP protocol, cell re-establishment follows a cell selection process (cell search) rather than reselection. Cell reselection is performed in neighboring cells; however, cell reconstruction is performed in any cell that can meet the S criterion. That is, cell re-establishment may occur in the previous cell, or a neighboring cell of the previous cell, or any other detected cell satisfying the S criterion.

If the re-established cell does not have the context of this UE, the re-establishment will fail. Therefore, in the previous cell re-establishment, there is still a probability of success, but if it is re-established in a cross-base station (eNodeB) neighboring cell, because there is no context of this UE, RRC re-establishment may fail (for the time being, the UE context on the X2 interface is not considered parameter passing).

According to the interpretation of the above agreement, the reconstruction target cell meets the following conditions:

(1), S criterion, that is, the reference signal received power and the reference signal received quality are greater than >0;

(2) Mark the source cell, that is, the current serving cell (bar) the target duration (for example, 30 seconds), and when calculating the S value of the source cell, it is necessary to add an offset value (offset), for example: the offset value is -15db;

(3), belonging to the sub-district in the historical sub-district maintenance table; Exemplarily, the historical sub-district maintenance table includes recording the most recently used 3 registered sub-districts as preferred sub-districts; List districts (maintain high-quality districts);

(4) It belongs to the same base station as the source cell, that is, the current serving cell.

It can be understood that, for the E-UTRAN Cell Identifier, ECI=eNodeB-ID+Cell-ID. Wherein, the eNodeB-ID is 20 bits (bits), and the Cell-ID is 8 bits (bits). Therefore, if it is required that the target cell and the source cell belong to the same base station, that is, the first 20 bits in the ECI must be the same.

Optionally, if no cell with the same eNodeB can be found, another cell can be selected as the target cell.

It can be understood that, for example, if the source cell is marked (bar) for 30 seconds, the source cell will not be selected as the target cell within the 30 seconds. After the 30 seconds, when calculating the S value of the source cell, an offset value (offset) needs to be added to the calculated S value of the source cell.

After selecting the target cell, the terminal device can initiate an RRC Reestablishment Request (RRC Reestablishment Request) to the target cell and wait for the network response; Establishment (fallback to RRC establishment)), then the reconstruction is successful.

If the RRC Reestablishment Request (RRC Reestablishment Request) is initiated for the first time, and the network device has not responded, it can also be understood as not responding within the second preset time length, then it can be adjusted to initiate an RRC Setup Request (RRC Setup Request) on the target cell. ), waiting for the network device to send an RRC setup message (RRC Setup) to the terminal device.

Strategy 2. Optionally, when it is monitored that the current serving cell accessed by the terminal device is abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, the first Select the target cell from the cell of the conditions, which may include:

When it is monitored that the downlink rate represented by the downlink data of the current serving cell of the terminal device is less than or equal to the second rate threshold, the signal strength is greater than the strength threshold, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold. De-registration and re-registration process;

In a case where the downlink rate of the terminal device performing re-registration with the serving cell is less than a first rate threshold, select a target cell from cells satisfying the first condition.

It should be noted that, optionally, the first condition here may also include: marking the target duration for the current serving cell; shifted and. But generally speaking, if the current serving cell accessed by the terminal device is monitored to be seriously abnormal, then the first condition for selecting the target cell may be relaxed, that is, the first condition may not include the above (4) and (5).

Exemplarily, when it is monitored that the current serving cell (such as Cell A) accessed by the terminal device is severely abnormal, that is, the rate is extremely low, and the signal strength is normal (for example: the downlink rate is lower than 100k, the duration is 30 seconds, and the signal strength is between -80db or above), and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, the abnormality is serious at this time, and the switch data or switch flight mode can be automatically triggered to actively de-register (detach) + reset In the process of attaching, if the data service rate status still fails to return to normal at this time, perform recovery actions similar to those in strategy 1. That is, select the target cell from the cells that meet the first condition; or, if no target cell is selected from the cells that meet the first condition, you can select the target cell from the cells that meet the second condition.

It can also be understood that when the first condition includes "marking the target duration for the current serving cell; and when the current serving cell performs S criterion calculation, the S value is the sum of the currently calculated value and the target offset" If the target cell is selected, the target cell will not be the current serving cell within the target duration of the current serving cell being barred; the first condition does not include "marking the target duration for the current serving cell; and the current serving cell When calculating the S criterion, if the S value is the sum of the currently calculated value and the target offset", if the target cell is selected, the target cell may also be the current serving cell. It should be noted that the first condition does not include the cells that "mark the target duration for the current serving cell; and when the S criterion is calculated for the current serving cell, the S value is the sum of the currently calculated value and the target offset" The main purpose of selecting the target cell is to prevent that there is no optional cell.

When triggering the switch data to do the process of active detach + re-register (attach), the re-registered cell is generally the source cell, that is, the current serving cell of the terminal device (such as Cell A); trigger the switch flight mode to do active de-registration (detach) + re-registration (attach) process, you need to search the network again, then the re-registered cell may be the source cell, or it may be other cells except the source cell.

Optionally, in the schemes of strategy 1 and strategy 2 above, the method further includes:

If there is no cell satisfying the first condition, selecting a target cell from cells satisfying the second condition;

The second condition includes:

S criterion;

202. Release the RRC connection of the current serving cell, and initiate a reestablishment request to the target cell.

203. Receive an RRC re-establishment message sent by the target cell, and send an RRC re-establishment complete message to the target cell; or receive an RRC configuration message sent by the target cell, and send an RRC configuration message to the target cell.

It can be understood that a re-establishment request is initiated to the target cell; an RRC re-establishment message sent by the target cell is received; an RRC re-establishment complete message is sent to the target cell; refer to FIG. 1A . Initiate a reestablishment request to the target cell; receive an RRC setup message sent by the target cell; send an RRC setup message to the target cell; refer to FIG. 1C .

Optionally, the method further includes: when no RRC reestablishment message or RRC setting message is received within the second preset time period, sending an RRC setting request to the target cell; receiving the RRC setting request sent by the target cell message; sending an RRC setup complete message to the target cell.

Optionally, this embodiment of the present application is also applicable to scenarios where the terminal device is under New Radio (NR) Standalone (SA) (38.331) and Long Term Evolution (LTE) (36.331).

To sum up, the terminal devices using strategy A and strategy B have been compared and verified in the real network. In some scenarios, they can achieve better performance than terminal devices that do not use strategy A and strategy B of this patent, which can speed up abnormal recovery.

It should be noted that step 203 is an optional step.

In this embodiment of the application, if the current serving cell accessed by the terminal device is monitored to be abnormal, the signal strength is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, the first condition is met Select a target cell from among the cells; release the RRC connection of the current serving cell, and initiate a reestablishment request to the target cell; wherein, the first condition includes: S criterion; belongs to the same base station as the current serving cell; and is a cell in the historical cell maintenance table, the historical cell maintenance table includes the most recently registered N cells, and/or, the cell whose reference signal received power is greater than the power threshold, and N is an integer greater than 0. That is, when the current serving cell accessed by the terminal device is abnormal and the signal is normal, reconstruction can be performed to improve the recovery capability of the terminal device from abnormal communication. Provides a set of intelligent recovery strategies for terminal equipment with abnormal data. When the current service cell accessed by the terminal equipment is abnormal and the signal is normal, intelligent judgment and rapid reconstruction based on the 3GPP protocol will improve the abnormal recovery ability of the terminal equipment and enhance the net recommendation Value (Net Promoter Score, NPS).

As shown in Figure 3, it is a schematic diagram of an embodiment of the terminal device in the embodiment of the present application, which may include:

The selection module 301 is configured to monitor the current serving cell accessed by the terminal device to be abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, in the cell that meets the first condition Select the target cell in

An establishment module 302, configured to release the RRC connection of the current serving cell, and initiate a reestablishment request to the target cell;

Wherein, the first condition includes:

S criterion;

belong to the same base station as the current serving cell;

Optionally, the selection module 301 is specifically configured to monitor that the downlink rate represented by the downlink data of the current serving cell accessed by the terminal device is less than the first rate threshold and greater than the second rate threshold, the signal strength is greater than the strength threshold, and the network If the device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, select the target cell from the cells that meet the first condition;

The first condition also includes:

marking the target duration for the current serving cell;

And when the current serving cell calculates the S criterion, the S value is the sum of the currently calculated value and the target offset.

Optionally, the selection module 301 is specifically configured to monitor that the downlink rate represented by the downlink data of the current serving cell of the terminal device is less than or equal to the second rate threshold, the signal strength is greater than the strength threshold, and the network device is not configured with other cells/other cells When the measurement result does not meet the measurement threshold, perform a de-registration and re-registration process; when the downlink rate of the serving cell that the terminal device performs re-registration is less than the first rate threshold, select the target in the cell that meets the first condition district.

Optionally, the selection module 301 is further configured to select a target cell from cells satisfying the second condition if there is no cell satisfying the first condition;

The second condition includes:

S criterion;

Optionally, the selection module 301 is specifically configured to monitor that the current serving cell accessed by the terminal device is abnormal for a first preset duration, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the requirements. In the case of measuring the threshold, the target cell is selected from the cells satisfying the first condition.

Optionally, the terminal device further includes a transceiver module 303,

A transceiver module 303, configured to receive an RRC re-establishment message sent by the target cell; send an RRC re-establishment complete message to the target cell;

or,

The transceiver module 303 is configured to receive an RRC setting message sent by the target cell; and send an RRC setting message to the target cell.

Optionally, the transceiver module 303 is further configured to send an RRC setup request to the target cell if no RRC reestablishment message or RRC setup message is received within the second preset time period; and receive the RRC setup request sent by the target cell A setting message; sending an RRC setting complete message to the target cell.

As shown in Figure 4, it is a schematic diagram of another embodiment of the terminal device in the embodiment of the present application, which may include:

Fig. 4 shows a block diagram of a partial structure of a mobile phone related to a terminal device provided by an embodiment of the present invention. Referring to Fig. 4, the mobile phone includes: a radio frequency (Radio Frequency, RF) circuit 410, a memory 420, an input unit 430, a display unit 440, a sensor 450, an audio circuit 460, a wireless fidelity (wireless fidelity, Wi-Fi) module 470, a processing device 480, and power supply 490 and other components. Those skilled in the art can understand that the structure of the mobile phone shown in FIG. 4 does not constitute a limitation to the mobile phone, and may include more or less components than shown in the figure, or combine some components, or arrange different components.

The following is a specific introduction to each component of the mobile phone in conjunction with Figure 4:

The RF circuit 410 can be used for sending and receiving information or receiving and sending signals during a call. In particular, after receiving the downlink information from the base station, it is processed by the processor 480; in addition, the designed uplink data is sent to the base station. Generally, the RF circuit 410 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (Low Noise Amplifier, LNA), a duplexer, and the like. In addition, RF circuitry 410 may also communicate with networks and other devices via wireless communications. The above wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile communication (Global System of Mobile communication, GSM), General Packet Radio Service (General Packet Radio Service, GPRS), Code Division Multiple Access (Code Division Multiple Access, CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), etc.

The memory 420 can be used to store software programs and modules, and the processor 480 executes various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 420 . The memory 420 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Data created by the use of mobile phones (such as audio data, phonebook, etc.), etc. In addition, the memory 420 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

The input unit 430 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the mobile phone. Specifically, the input unit 430 may include a touch panel 431 and other input devices 432 . The touch panel 431, also referred to as a touch screen, can collect touch operations of the user on or near it (for example, the user uses any suitable object or accessory such as a finger or a stylus on the touch panel 431 or near the touch panel 431). operation), and drive the corresponding connection device according to the preset program. Optionally, the touch panel 431 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to the to the processor 480, and can receive and execute commands sent by the processor 480. In addition, the touch panel 431 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 431 , the input unit 430 may also include other input devices 432 . Specifically, other input devices 432 may include, but are not limited to, one or more of physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.

The display unit 440 may be used to display information input by or provided to the user and various menus of the mobile phone. The display unit 440 may include a display panel 441. Optionally, the display panel 441 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or the like. Further, the touch panel 431 may cover the display panel 441, and when the touch panel 431 detects a touch operation on or near it, it transmits to the processor 480 to determine the type of the touch event, and then the processor 480 determines the type of the touch event according to the The type provides a corresponding visual output on the display panel 441 . Although in FIG. 4 , the touch panel 431 and the display panel 441 are used as two independent components to realize the input and input functions of the mobile phone, in some embodiments, the touch panel 431 and the display panel 441 can be integrated to form a mobile phone. Realize the input and output functions of the mobile phone.

The handset may also include at least one sensor 450, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor can include an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 441 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 441 and/or when the mobile phone is moved to the ear. or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used to identify the application of mobile phone posture (such as horizontal and vertical screen switching, related Games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; as for other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc. repeat.

The audio circuit 460, the speaker 461, and the microphone 462 can provide an audio interface between the user and the mobile phone. The audio circuit 460 can transmit the electrical signal converted from the received audio data to the loudspeaker 461, and the loudspeaker 461 converts it into an audio signal output; After being received, it is converted into audio data, and then the audio data is processed by the output processor 480, and then sent to another mobile phone through the RF circuit 410, or the audio data is output to the memory 420 for further processing.

Wi-Fi belongs to the short-distance wireless transmission technology. Through the Wi-Fi module 470, the mobile phone can help users send and receive emails, browse web pages, and access streaming media, etc., and it provides users with wireless broadband Internet access. Although FIG. 4 shows the Wi-Fi module 470, it can be understood that it is not an essential component of the mobile phone, and can be omitted as required without changing the essence of the invention.

The processor 480 is the control center of the mobile phone. It uses various interfaces and lines to connect various parts of the entire mobile phone. By running or executing software programs and/or modules stored in the memory 420, and calling data stored in the memory 420, execution Various functions and processing data of the mobile phone, so as to monitor the mobile phone as a whole. Optionally, the processor 480 may include one or more processing units; preferably, the processor 480 may integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces, and application programs, etc. , the modem processor mainly handles wireless communications. It can be understood that the foregoing modem processor may not be integrated into the processor 480 .

The mobile phone also includes a power supply 490 (such as a battery) that supplies power to each component. Preferably, the power supply can be logically connected to the processor 480 through the power management system, so as to realize functions such as managing charging, discharging, and power consumption management through the power management system.

Although not shown, the mobile phone may also include a camera, a Bluetooth module, etc., which will not be repeated here.

In the embodiment of the present invention, the processor 480 is configured to monitor that the current serving cell accessed by the terminal device is abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, Selecting a target cell among cells satisfying the first condition; releasing the RRC connection of the current serving cell, and initiating a reestablishment request to the target cell;

Wherein, the first condition includes:

S criterion;

belong to the same base station as the current serving cell;

Optionally, the processor 480 is specifically configured to monitor that the downlink rate represented by the downlink data of the current serving cell accessed by the terminal device is less than the first rate threshold and greater than the second rate threshold, the signal strength is greater than the strength threshold, and the network If the device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, select the target cell from the cells that meet the first condition;

The first condition also includes:

marking the target duration for the current serving cell;

Optionally, the processor 480 is specifically configured to monitor that the downlink rate represented by the downlink data of the current serving cell of the terminal device is less than or equal to the second rate threshold, the signal strength is greater than the strength threshold, and the network device is not configured with other cells/other cells When the measurement result does not meet the measurement threshold, perform a de-registration and re-registration process; when the downlink rate of the serving cell that the terminal device performs re-registration is less than the first rate threshold, select the target in the cell that meets the first condition district.

Optionally, the processor 480 is further configured to select a target cell from cells satisfying the second condition if there is no cell satisfying the first condition;

The second condition includes:

S criterion;

Optionally, the processor 480 is specifically configured to monitor that the abnormal duration of the current serving cell accessed by the terminal device reaches the first preset duration, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the requirements. In the case of measuring the threshold, the target cell is selected from the cells satisfying the first condition.

Optionally, the RF circuit 410 is configured to receive an RRC re-establishment message sent by the target cell; send an RRC re-establishment complete message to the target cell;

or,

The RF circuit 410 is configured to receive an RRC setup message sent by the target cell; and send an RRC setup message to the target cell.

Optionally, the RF circuit 410 is further configured to send an RRC setup request to the target cell if no RRC reestablishment message or RRC setup message is received within the second preset time period; and receive the RRC setup request sent by the target cell A setting message; sending an RRC setting complete message to the target cell.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present invention will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server, or data center Transmission to another website site, computer, server, or data center by wired (eg, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be stored by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (such as a floppy disk, a hard disk, or a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a Solid State Disk (SSD)).

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions described in each embodiment are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application.

Claims

A reconstruction method when communication is abnormal, characterized in that it includes:

When the current serving cell accessed by the terminal device is monitored to be abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, select the target cell from the cells that meet the first condition;

Release the RRC connection of the current serving cell, and initiate a reestablishment request to the target cell;

Wherein, the first condition includes:

S criterion;

belong to the same base station as the current serving cell;

And it is a cell in the historical cell maintenance table, the historical cell maintenance table includes the last registered N cells, and/or, the cell whose reference signal received power is greater than the power threshold, and N is an integer greater than 0.
The method according to claim 1 or 2, wherein the current serving cell accessed by the terminal device is monitored to be abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold In the case of , select the target cell among the cells that meet the first condition, including:

When it is monitored that the downlink rate represented by the downlink data of the current serving cell accessed by the terminal device is less than the first rate threshold and greater than the second rate threshold, the signal strength is greater than the strength threshold, and the network device is not configured with other cells/measurement results of other cells When the measurement threshold is not met, select the target cell from the cells satisfying the first condition;

The first condition also includes:

marking the target duration for the current serving cell;

And when the current serving cell calculates the S criterion, the S value is the sum of the currently calculated value and the target offset.
The method according to claim 1 or 2, wherein the current serving cell accessed by the terminal device is monitored to be abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold In the case of , select the target cell among the cells that meet the first condition, including:

When it is monitored that the downlink rate represented by the downlink data of the current serving cell of the terminal device is less than or equal to the second rate threshold, the signal strength is greater than the strength threshold, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold. De-registration and re-registration process;

In a case where the downlink rate of the terminal device performing re-registration with the serving cell is less than a first rate threshold, select a target cell from cells satisfying the first condition.
The method according to claim 3, further comprising:

If there is no cell satisfying the first condition, selecting a target cell from cells satisfying the second condition;

The second condition includes:

S criterion;

And it is a cell in the historical cell maintenance table, the historical cell maintenance table includes the last registered N cells, and/or, the cell whose reference signal received power is greater than the power threshold, and N is an integer greater than 0.
The method according to claim 1 or 2, wherein the current serving cell accessed by the terminal device is monitored to be abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold In the case of , select the target cell among the cells that meet the first condition, including:

When it is monitored that the abnormal duration of the current serving cell accessed by the terminal device reaches the first preset duration, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, the first condition is met Select the target cell from the cell.
The method according to claim 1 or 2, characterized in that the method further comprises:

receiving an RRC re-establishment message sent by the target cell; sending an RRC re-establishment complete message to the target cell;

or,

receiving an RRC setup message sent by the target cell; and sending an RRC setup message to the target cell.
The method according to claim 1 or 2, characterized in that the method further comprises:

If no RRC reestablishment message or RRC setup message is received within the second preset duration, send an RRC setup request to the target cell;

receiving an RRC setup message sent by the target cell;

sending an RRC setup complete message to the target cell.
A terminal device, characterized in that it includes:

The selection module is used for monitoring the current serving cell accessed by the terminal device to be abnormal, the signal is normal, and the network device is not configured with other cells/the measurement results of other cells do not meet the measurement threshold, in the cell that meets the first condition Select the target area;

An establishment module, configured to release the RRC connection of the current serving cell, and initiate a reestablishment request to the target cell;

Wherein, the first condition includes:

S criterion;

belong to the same base station as the current serving cell;

And it is a cell in the historical cell maintenance table, the historical cell maintenance table includes the last registered N cells, and/or, the cell whose reference signal received power is greater than the power threshold, and N is an integer greater than 0.
A terminal device, characterized in that it includes:

a memory storing executable program code;

a processor coupled to the memory;

The processor invokes the executable program code stored in the memory, so that the processor correspondingly executes the method according to any one of claims 1-7.
A computer-readable storage medium, comprising instructions, which, when run on a processor, cause the processor to execute the method according to any one of claims 1-7.