WO2019061427A1

WO2019061427A1 - Abnormal frequency point detection method and apparatus, and computer storage medium

Info

Publication number: WO2019061427A1
Application number: PCT/CN2017/104848
Authority: WO
Inventors: 王旭康
Original assignee: 深圳市云中飞网络科技有限公司
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2019-04-04
Also published as: CN107980229B; CN107980229A

Abstract

Disclosed in the present invention are an abnormal frequency point detection method and apparatus, and a computer storage medium, the method comprising: when receiving a CS paging message, a terminal scans the frequency point of a plurality of GSM cells; on the basis of the scanning results, the terminal determines the frequency point of a target GSM cell, and uses the frequency point of the target GSM cell as a target frequency point for communication; on the basis of the target frequency point, the terminal executes an RR channel acquisition procedure; and, when the terminal has executed the RR channel acquisition procedure N times but has not acquired the RR channel allocated by the network, determining that the target frequency point is an abnormal frequency point, N being a preset threshold.

Description

Method and device for detecting abnormal frequency point, computer storage medium

Technical field

The present invention relates to the field of Circuit Area Fallback (CSFB), and particularly to a method and device for detecting abnormal frequency points and a computer storage medium.

Background technique

Since long-term evolution (LTE, Long Term Evolution) and 2G/3G dual-mode terminals are wireless-signal-mode, a dual-mode or multi-mode terminal with LTE and 2G/3G access capabilities, When using LTE access, 2G/3G circuit domain service signals cannot be transmitted. In order to enable the terminal (UE, User Equipment) to perform a CS (Circuit Switched) service, such as voice, and the UE can perform the packet domain (PS, Packet Switch) under the LTE access of the UE. The business is processed correctly, resulting in CSFB technology.

In the CSFB process, the originator of the telephone is called the caller (MO, Mobile Origination), the receiver of the call is called the called (MT, Mobile Termination), and the MO and the MT each have their own CSFB signaling flow. For the MT in the CSFB process, the occurrence of various abnormal conditions often leads to the failure of the CSFB process, which leads to the failure of the phone to be connected. How to effectively ensure the success of the CSFB process is an urgent problem to be solved.

Summary of the invention

In order to solve the above technical problem, an embodiment of the present invention provides a method and apparatus for detecting an abnormal frequency point, and a computer storage medium.

The method for detecting an abnormal frequency point provided by the embodiment of the present invention includes:

When the terminal receives the CS paging message, it applies to multiple global mobile communication systems (GSM, Global System for Mobile Communication) scanning the frequency of the cell;

The terminal determines a frequency point of the target GSM cell based on the scan result, and uses a frequency point of the target GSM cell as a target frequency point for communication;

The terminal performs a radio resource (RR, Radio Resource) channel acquisition process based on the target frequency point;

When the terminal does not obtain the RR channel allocated by the network, the terminal determines that the target frequency is an abnormal frequency, where N is a preset threshold.

In the embodiment of the present invention, the performing RR channel acquisition process includes:

The terminal sends an RR channel request message to the network, and waits for the IA (Immediate Assignment) message returned by the network, where the IA message carries the RR channel allocated by the network to the terminal.

In the embodiment of the present invention, when the terminal does not obtain the RR channel allocated by the network, the terminal determines that the target frequency is an abnormal frequency, including:

When the RR channel acquisition process is performed for the ith time, the terminal does not receive the IA message sent by the network, and determines whether the number i of performing the RR channel acquisition process is less than N;

When the number of times i of performing the RR channel acquisition procedure is less than N, the RR channel request message is sent to the network again, and the number of times the RR channel acquisition procedure is performed is incremented by one;

When the number of times i of performing the RR channel acquisition process is greater than or equal to N, determining that the target frequency point is an abnormal frequency point;

Where i is a positive integer.

In the embodiment of the present invention, the method further includes:

When the terminal acquires the RR channel allocated by the network, sends a Set Asynchronous Balanced Mode (SABM) frame to the network based on the RR channel, and starts a timer to wait for the network to return. Number verification (UA) frame;

Before the timer expires, determining whether the terminal receives the UA returned by the network frame;

When the terminal does not receive the UA frame returned by the network before the timer expires, it is determined that the target frequency point is an abnormal frequency point.

In this embodiment of the present invention, the timer is a T200 timer.

In the embodiment of the present invention, the method further includes:

Marking the abnormal frequency points, and storing the marked abnormal frequency points in the abnormal frequency database;

When the terminal receives the CS paging message again, the frequency of the GSM cell to be scanned is filtered based on the abnormal frequency database, wherein the frequency of the GSM cell to be scanned does not include the abnormal frequency Abnormal frequency in the database.

The device for detecting an abnormal frequency point provided by the embodiment of the invention includes:

a paging unit configured to receive a CS paging message;

a frequency point scanning unit configured to scan frequency points of multiple GSM cells;

a determining unit, configured to determine a frequency point of the target GSM cell based on the scan result, and use a frequency point of the target GSM cell as a target frequency point for communication;

An RR channel acquiring unit, configured to perform an RR channel acquisition process based on the target frequency point;

The first abnormal frequency detecting unit is configured to determine that the target frequency is an abnormal frequency when the terminal does not obtain the RR channel allocated by the network, and wherein the N is a preset threshold. .

In the embodiment of the present invention, the RR channel acquiring unit is configured to: send an RR channel request message to the network, and wait for the IA message returned by the network, where the IA message carries the network as the terminal The assigned RR channel.

In the embodiment of the present invention, the RR channel acquiring unit is further configured to: when the RR channel acquisition process is performed for the ith time, the terminal does not receive the IA message sent by the network, and determines to perform an RR channel acquisition process. Whether the number of times i is less than N; when the RR channel acquisition process is performed When the number of times i is less than N, the RR channel request message is sent again to the network, and the number of times the RR channel acquisition procedure is performed is incremented by one;

The first abnormal frequency detection unit is configured to: when the number of times i of performing the RR channel acquisition process is greater than or equal to N, determine that the target frequency is an abnormal frequency; wherein i is a positive integer.

In the embodiment of the present invention, the device further includes:

a radio resource establishing unit, configured to: when the terminal acquires the RR channel allocated by the network, send a SABM frame to the network based on the RR channel, and start a timer to wait for a UA frame returned by the network;

The second abnormal frequency detecting unit is configured to determine, before the timer expires, whether the terminal receives the UA frame returned by the network; when the timer expires, the terminal does not receive When the UA frame returned by the network is determined, the target frequency point is determined to be an abnormal frequency point.

In this embodiment of the present invention, the timer is a T200 timer.

In the embodiment of the present invention, the device further includes:

a marking unit configured to mark the abnormal frequency point and store the marked abnormal frequency point in the abnormal frequency point database;

a screening unit, configured to: when the CS paging message is received again, filter, according to the abnormal frequency point database, a frequency of the GSM cell to be scanned, where the frequency of the GSM cell to be scanned does not include the abnormality The frequency of the anomaly in the frequency database.

The computer storage medium provided by the embodiment of the present invention has computer executable instructions stored thereon, and the computer executable instructions are implemented by the processor to implement the abnormal frequency detection method.

In the technical solution of the embodiment of the present invention, when receiving the CS paging message, the terminal scans the frequency points of the multiple GSM cells; the terminal determines the frequency of the target GSM cell based on the scanning result, and uses the target GSM. The frequency of the cell is used as a target frequency point for communication; the terminal performs an RR channel acquisition process based on the target frequency point; and the terminal performs N times of RR channel acquisition process When the RR channel allocated by the network is not obtained, the target frequency point is determined to be an abnormal frequency point, where N is a preset threshold. And when the terminal acquires the RR channel allocated by the network, sending a SABM frame to the network based on the RR channel, and starting a timer to wait for a UA frame returned by the network; before the timer expires, determining Whether the terminal receives the UA frame returned by the network; when the terminal does not receive the UA frame returned by the network before the timer expires, determining that the target frequency point is an abnormal frequency point. With the technical solution of the embodiment of the present invention, the frequency of the abnormal GSM cell can be detected. The abnormal GSM cell is also the cell where the network is congested. Therefore, in the subsequent CSFB process, these abnormal frequency points are directly ignored. , greatly improving the probability of success of the CSFB process and improving the user's calling experience.

DRAWINGS

FIG. 1 is a schematic diagram of an RR channel acquisition process according to an embodiment of the present invention;

2 is a schematic diagram of a CC establishment process according to an embodiment of the present invention;

3 is a schematic flowchart 1 of a method for detecting an abnormal frequency point according to an embodiment of the present invention;

4 is a second schematic flowchart of a method for detecting an abnormal frequency point according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram 1 of a structure of an abnormal frequency detecting device according to an embodiment of the present invention; FIG.

6 is a second structural diagram of a structure of an abnormal frequency detecting device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed ways

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As the number of UEs continues to increase, more and more communication services will appear simultaneously at the same time. In the case of limited network resources, network congestion will occur. Network congestion generally exists in areas where communication services are busy. For the UE, it is often that the phone is not available for a period of time. In another period of time, communication is normal. The basic reason is that the MT is located in the cell with the best signal in the CSFB process, and this cell is usually the cell with the most access users (that is, the cell with network congestion), which causes the MT call to fail.

Under normal circumstances, the CSFB-enabled terminal can search for the LTE network, complete the LTE/2G network joint registration, and be able to voice call and call.

The CSFB process includes three phases: 1) the UE initiates a call (corresponding to MO) on the LTE network, or receives a page (corresponding to the MT); 2) the UE falls back under the guidance of the LTE network and searches for a suitable GSM cell for access; 3) The UE reads the GSM cell system broadcast message and establishes a voice call.

For the MT, the foregoing CSFB process includes at least an RR channel acquisition process and a call control (CC, Call Control) establishment process, where the CC establishment process includes an RR channel acquisition process. The RR channel acquisition process and the CC establishment process are separately described below.

FIG. 1 is a schematic diagram of an RR channel acquisition process according to an embodiment of the present invention. As shown in FIG. 1 , the RR channel acquisition process includes the following steps:

Step 101: The UE is powered on, and performs an Evolved Packet System (EPS)/International Mobile Subscriber Identification Number (IMSI) attachment.

Step 102: The UE receives the CS paging message.

Step 103: The UE scans frequency points of multiple GSM cells, and selects a frequency point of a GSM cell for communication.

Here, the frequency point of the selected GSM cell is referred to as a target frequency point.

Step 104: The UE sends an RR channel request message (RR_CHANNEL_REQUEST) to the network based on the target frequency point.

Step 105: The UE receives the network reply IM message, and obtains the RR channel allocated by the network through the IM message.

In the above process, the UE sends an RR_CHANNEL_REQUEST to request random connection to the network. The incoming channel, that is, the RR channel, after which the UE waits for the network to reply to the IA message. However, due to network congestion, the UE does not receive the IA message sent by the network. This causes the random access procedure to fail, eventually causing the CSFB process to fail. , performance in the MT call nowhere.

FIG. 2 is a schematic diagram of a CC establishment process according to an embodiment of the present invention. As shown in FIG. 2, the CC establishment process includes the following steps:

Step 201: The UE is powered on and performs EPS/IMSI attachment.

Step 202: The UE receives the CS paging message.

Step 203: The UE scans frequency points of multiple GSM cells, and selects a frequency point of a GSM cell for communication.

Step 204: The UE sends an RR_CHANNEL_REQUEST to the network based on the target frequency point.

Step 205: The UE receives the network reply IM message, and obtains the RR channel allocated by the network by using the IM message.

Step 206: The UE sends the SABM frame to the network based on the RR channel.

Step 207: The UE starts the T200 timer.

Step 208: The UE receives the UA frame replied by the network before the T200 timer expires.

In the above process, after the network allocates the RR channel to the UE, the UE sends a SABM frame to the network at the data link layer (L2 layer), and waits for the network to return a response frame, that is, a UA frame. When the UE sends a SABM frame to the network, the T200 timer is enabled. If the network is congested, the UE will not receive the UA frame returned by the network, causing the T200 timer to expire. As a result, the random access process fails, eventually leading to the CSFB process. Failure, performance in the MT call nowhere.

For the problem that the network congestion causes the CSFB process to fail, the embodiment of the present invention provides a method for detecting an abnormal frequency point, which can effectively detect the frequency of the abnormal GSM cell, thereby effectively avoiding subsequent access to the abnormal frequency point. A problem with the CSFB process failure has occurred.

FIG. 3 is a schematic flowchart 1 of a method for detecting an abnormal frequency point according to an embodiment of the present invention. As shown in FIG. 3, the method for detecting an abnormal frequency point includes the following steps:

Step 301: When the terminal receives the CS paging message, the terminal scans the frequency points of the multiple GSM cells.

In the embodiment of the present invention, the terminal refers to the MT, and after the terminal is powered on, the joint EPS/IMSI attachment is first performed. Then, the terminal receives the CS paging message sent by the network side. Here, the MO is required to initiate a call for the MT first, and then the MT receives the CS paging message sent by the network side.

Specifically, after receiving the initial address request (IAM) incoming message, the mobile services switching center (MSC) in the network sends the SGsAP-PAGING-REQUEST message according to the existing SGs association and Mobility Management Entity (MME) information. To the MME, the SGsAP-PAGING-REQUEST message carries the following information: IMSI, Temporary Mobile Subscriber Identity (TMSI), Service Indicator, Calling Number, and Location Area Information. The MME sends a paging message to the base station, and the base station initiates an air interface Paging process. The UE establishes a connection and sends an Extended Service Request message to the MME. The MME sends an SGsAP-SERVICE-REQUEST message to the MSC. The MSC receives the message and does not resend the paging request message to the MME. To avoid the call waiting time being too long during the call connection process, the MSC receives the SGs Service Request message containing the idle state indication, first notifying that the calling call is in the process of being connected. The MME sends an Initial UE Context Setup message to the base station. Here, the Initial UE Context Setup message carries a CS Fallback Indicator, and the CS Fallback Indicator is used to indicate that the base station UE needs to fall back to the UMTS Terrestrial Radio Access Network due to the CSFB service requirement (UTRAN, UMTS Terrestrial Radio Access Network). ) / GSM / EDGE Radio Access Network (GERAN, GSM EDGE Radio Access Network).

When the terminal receives the CS paging message, the frequency of the multiple GSM cells is scanned. Here, the network side may configure a 2G frequency point group for the terminal, where the 2G frequency point group includes frequency points of multiple GSM cells, and then the terminal scans the frequency points of the multiple GSM cells. of course, The terminal can also perform frequency point scanning directly in a certain 2G frequency range. Here, the results of the scanning include, but are not limited to, the signal strength of the frequency points of the respective GSM cells.

Step 302: The terminal determines a frequency point of the target GSM cell based on the scan result, and uses a frequency point of the target GSM cell as a target frequency point for communication.

In the embodiment of the present invention, the terminal determines, according to the scanning result, the frequency point of the target GSM cell, specifically: the terminal determines the frequency point with the strongest signal strength from the signal strength of the frequency point of each GSM cell, as the communication is used. Target frequency.

Step 303: The terminal performs a radio resource RR channel acquisition process based on the target frequency point.

Specifically, the terminal sends an RR channel request message (RR_CHANNEL_REQUEST) to the network, and waits for the IA message returned by the network, where the IA message carries the RR channel allocated by the network to the terminal.

Step 304: When the terminal does not obtain the RR channel allocated by the network, the terminal determines that the target frequency is an abnormal frequency, where N is a preset threshold.

In the embodiment of the present invention, when the RR channel acquisition process is performed for the ith time, the terminal does not receive the IA message sent by the network, and determines whether the number i of performing the RR channel acquisition process is less than N;

Where i is a positive integer.

The method of the embodiment of the invention further includes the following steps:

Step 305: Mark the abnormal frequency point, and store the marked abnormal frequency point into the abnormal frequency point database.

Step 306: When the terminal receives the CS paging message again, the frequency of the GSM cell to be scanned is filtered out according to the abnormal frequency point database, where the frequency of the GSM cell to be scanned does not include the Abnormal frequency points in the abnormal frequency database.

4 is a schematic flowchart 2 of a method for detecting an abnormal frequency point according to an embodiment of the present invention. As shown in FIG. 4, the method for detecting an abnormal frequency point includes the following steps:

Step 401: When the terminal receives the CS paging message, the terminal scans the frequency points of the multiple GSM cells.

Step 402: The terminal determines a frequency point of the target GSM cell based on the scan result, and uses a frequency point of the target GSM cell as a target frequency point for communication.

Step 403: The terminal performs a radio resource RR channel acquisition process based on the target frequency point.

Step 404: When the terminal acquires the RR channel allocated by the network in the process of performing the jth RR channel acquisition process, the SABM frame is sent to the network based on the RR channel, and the timer is started to wait for the UA frame returned by the network. .

Here, j is a positive integer less than or equal to N, and N is a preset threshold, for example, 5.

In the embodiment of the present invention, when the RR channel acquisition process is performed for the ith time, the terminal does not receive the IA message sent by the network, and determines whether the number i of performing the RR channel acquisition process is less than N; When the number of times of the RR channel acquisition process is less than N, the RR channel request message is sent to the network again, and the number of times the RR channel acquisition process is performed is incremented by one; when the RR channel acquisition process is performed for the jth time, the network is acquired. The assigned RR channel.

Step 405: Before the timer expires, determine whether the terminal receives the UA frame returned by the network.

Here, the timer super refers to the T200 timer.

Specifically, the SAMB frame is located at the link layer, and the protocol adopted by the link layer is a Dm channel link access protocol (LAPDM). The role of the link layer is to ensure that data is error-free during transmission, so that it can be guaranteed. The terminal can receive the data accurately, avoiding the situation that both parties are waiting. All SAMB frames and UA frames are normally paired. The message carried in the SAMB frame is: paging response for the called party. In addition, after the terminal sends the SAMB frame, the timer T200 is started. If the terminal does not receive the UA frame within the T200 time, the data link is considered. The road is locked.

Step 406: When the terminal does not receive the UA frame returned by the network before the timer expires, it is determined that the target frequency point is an abnormal frequency point.

Here, before the timer expires, when the terminal does not receive the UA frame returned by the network, the CC establishment fails, and the currently used target frequency point is an abnormal frequency point.

Step 407: Mark the abnormal frequency point, and store the marked abnormal frequency point to different Constant frequency point database.

Step 408: When the terminal receives the CS paging message again, the frequency of the GSM cell to be scanned is filtered according to the abnormal frequency point database, where the frequency of the GSM cell to be scanned does not include the Abnormal frequency points in the abnormal frequency database.

FIG. 5 is a first schematic structural diagram of a device for detecting an abnormal frequency point according to an embodiment of the present invention. As shown in FIG. 5, the detecting device for the abnormal frequency point includes:

The paging unit 501 is configured to receive the CS paging message;

The frequency point scanning unit 502 is configured to scan frequency points of multiple GSM cells;

The determining unit 503 is configured to determine a frequency point of the target GSM cell based on the scan result, and use a frequency point of the target GSM cell as a target frequency point for communication;

The RR channel obtaining unit 504 is configured to perform an RR channel acquisition process based on the target frequency point;

The first abnormal frequency detecting unit 505 is configured to determine that the target frequency is an abnormal frequency when the terminal does not obtain the RR channel allocated by the network, and wherein the N is a preset. Threshold.

In the embodiment of the present invention, the RR channel acquiring unit 504 is specifically configured to: send an RR channel request message to the network, and wait for the IA message returned by the network, where the IA message carries the network as the The RR channel allocated by the terminal.

In the embodiment of the present invention, the RR channel acquiring unit 504 is further configured to: when the RR channel acquisition process is performed for the ith time, the terminal does not receive the IA message sent by the network, and determines to perform RR channel acquisition. Whether the number of times i of the process is less than N; when the number of times i of performing the RR channel acquisition process is less than N, the RR channel request message is sent to the network again, and the number of times the RR channel acquisition process is performed is incremented by one;

The first abnormal frequency detection unit 505 is configured to: when the number of times i of performing the RR channel acquisition process is greater than or equal to N, determine that the target frequency is an abnormal frequency; wherein A positive integer.

In the embodiment of the present invention, the device further includes:

The marking unit 506 is configured to mark the abnormal frequency point and store the marked abnormal frequency point in the abnormal frequency point database;

The screening unit 507 is configured to: when the CS paging message is received again, filter, according to the abnormal frequency point database, a frequency point of the GSM cell to be scanned, where the frequency of the GSM cell to be scanned does not include the Abnormal frequency points in the abnormal frequency database.

It should be understood by those skilled in the art that the implementation function of each unit in the detecting device of the abnormal frequency shown in FIG. 5 can be understood by referring to the related description of the detecting method of the abnormal frequency. The function of each unit in the detecting device of the abnormal frequency shown in FIG. 5 can be realized by a program running on the processor, or can be realized by a specific logic circuit.

FIG. 6 is a second schematic structural diagram of an apparatus for detecting an abnormal frequency point according to an embodiment of the present invention. As shown in FIG. 6, the apparatus for detecting an abnormal frequency point includes:

The paging unit 601 is configured to receive the CS paging message;

The frequency point scanning unit 602 is configured to scan frequency points of multiple GSM cells;

The determining unit 603 is configured to determine a frequency point of the target GSM cell based on the scan result, and use a frequency point of the target GSM cell as a target frequency point for communication;

The RR channel obtaining unit 604 is configured to perform an RR channel acquisition process based on the target frequency point;

The first abnormal frequency detection unit 605 is configured to determine that the target frequency is an abnormal frequency when the terminal does not acquire the RR channel allocated by the network, and wherein the N is a preset. Threshold.

In the embodiment of the present invention, the RR channel acquiring unit 604 is specifically configured to: send an RR channel request message to the network, and wait for the IA message returned by the network, where the IA message carries the network as the The RR channel allocated by the terminal.

In the embodiment of the present invention, the RR channel acquiring unit 604 is further configured to: when the RR channel acquisition process is performed for the ith time, the terminal does not receive the IA message sent by the network, and determines to perform RR channel acquisition. Whether the number of times i of the process is less than N; when the number of times i of performing the RR channel acquisition process is less than N, the RR channel request message is sent to the network again, and the number of times the RR channel acquisition process is performed is incremented by one;

The first abnormal frequency detection unit 605 is configured to: when the number of times i of performing the RR channel acquisition process is greater than or equal to N, determine that the target frequency is an abnormal frequency; wherein i is a positive integer.

In the embodiment of the present invention, the device further includes:

The radio resource establishing unit 606 is configured to: when the terminal acquires the RR channel allocated by the network, send a SABM frame to the network based on the RR channel, and start a timer to wait for the UA frame returned by the network;

The second abnormal frequency detecting unit 607 is configured to determine, before the timer expires, whether the terminal receives the UA frame returned by the network; when the timer expires, the terminal does not receive When the UA frame returned by the network is reached, the target frequency point is determined to be an abnormal frequency point.

In this embodiment of the present invention, the timer is a T200 timer.

In the embodiment of the present invention, the device further includes:

The marking unit 608 is configured to mark the abnormal frequency point and store the marked abnormal frequency point in the abnormal frequency point database;

The screening unit 609 is configured to: when the CS paging message is received again, filter, according to the abnormal frequency point database, a frequency point of the GSM cell to be scanned, where the frequency of the GSM cell to be scanned does not include the Abnormal frequency points in the abnormal frequency database.

It should be understood by those skilled in the art that the implementation function of each unit in the detecting device of the abnormal frequency shown in FIG. 6 can be understood by referring to the related description of the detecting method of the abnormal frequency. Figure 6 The function of each unit in the detecting device of the abnormal frequency can be realized by a program running on the processor, or can be realized by a specific logic circuit.

In the embodiment of the present invention, the abnormal frequency detecting device described above may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as an independent product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, the embodiment of the present invention further provides a computer storage medium, wherein the computer executable instructions are stored, and the computer executable instructions are executed by the processor to implement the foregoing method for detecting an abnormal frequency point in the embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 7, the terminal 70 may include one or more (only one shown) processor 702 (the processor 702 may include but is not limited to micro processing). A processing device such as a Micro Controller Unit (MCU) or a Programmable Gate Array (FPGA), a memory 704 for storing data, and a transmission device 706 for communication functions. It will be understood by those skilled in the art that the structure shown in FIG. 7 is merely illustrative and does not limit the structure of the above electronic device. For example, terminal 70 may also include more or fewer components than shown in FIG. 7, or have a different configuration than that shown in FIG.

The memory 704 can be used to store software programs and modules of application software, such as program instructions/modules corresponding to the method for determining channel frequency hopping in the embodiment of the present invention, and the processor 702 runs the software programs and modules stored in the memory 704, thereby Perform various functional applications and data Processing, that is, implementing the above method. Memory 704 can include high speed random access memory and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, memory 704 can further include memory remotely located relative to processor 702, which can be connected to terminal 70 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Transmission device 706 is for receiving or transmitting data via a network. The network specific examples described above may include a wireless network provided by a communication provider of the terminal 70. In one example, the transmission device 706 includes a network interface controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, the transmission device 706 can be a radio frequency (RF) module for communicating with the Internet wirelessly.

The technical solutions described in the embodiments of the present invention can be arbitrarily combined without conflict.

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

The units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one second processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

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

Claims

A method for detecting an abnormal frequency point, the method comprising:

When receiving the circuit domain CS paging message, the terminal scans frequency points of multiple global mobile communication system GSM cells;

The terminal determines a frequency point of the target GSM cell based on the scan result, and uses a frequency point of the target GSM cell as a target frequency point for communication;

The terminal performs a radio resource RR channel acquisition process based on the target frequency point;

When the terminal does not obtain the RR channel allocated by the network, the terminal determines that the target frequency is an abnormal frequency, where N is a preset threshold.
The method for detecting an abnormal frequency point according to claim 1, wherein the performing the RR channel acquisition process comprises:

The terminal sends an RR channel request message to the network, and waits for the immediate assignment IA message returned by the network, where the IA message carries the RR channel allocated by the network to the terminal.
The method for detecting an abnormal frequency point according to claim 2, wherein when the terminal performs the RR channel acquisition process that is not acquired by the terminal, the target frequency point is determined to be an abnormal frequency point. ,include:

When the RR channel acquisition process is performed for the ith time, the terminal does not receive the IA message sent by the network, and determines whether the number i of performing the RR channel acquisition process is less than N;

When the number of times i of performing the RR channel acquisition procedure is less than N, the RR channel request message is sent to the network again, and the number of times the RR channel acquisition procedure is performed is incremented by one;

When the number of times i of performing the RR channel acquisition process is greater than or equal to N, determining that the target frequency point is an abnormal frequency point;

Where i is a positive integer.
The method for detecting an abnormal frequency point according to claim 1, wherein the method further include:

And when the terminal acquires the RR channel allocated by the network, sending an asynchronous balanced mode SABM frame to the network based on the RR channel, and starting a timer to wait for the unnumbered UA frame returned by the network;

Before the timer expires, determining whether the terminal receives the UA frame returned by the network;

When the terminal does not receive the UA frame returned by the network before the timer expires, it is determined that the target frequency point is an abnormal frequency point.
The method for detecting an abnormal frequency point according to claim 4, wherein the timer is a T200 timer.
The method for detecting an abnormal frequency point according to any one of claims 1 to 5, wherein the method further comprises:

Marking the abnormal frequency points, and storing the marked abnormal frequency points in the abnormal frequency database;

When the terminal receives the CS paging message again, the frequency of the GSM cell to be scanned is filtered based on the abnormal frequency database, wherein the frequency of the GSM cell to be scanned does not include the abnormal frequency Abnormal frequency in the database.
An abnormal frequency detecting device, the device comprising:

a paging unit configured to receive a CS paging message;

a frequency point scanning unit configured to scan frequency points of multiple GSM cells;

a determining unit, configured to determine a frequency point of the target GSM cell based on the scan result, and use a frequency point of the target GSM cell as a target frequency point for communication;

An RR channel acquiring unit, configured to perform an RR channel acquisition process based on the target frequency point;

The first abnormal frequency detecting unit is configured to perform N times RR channel acquisition process when the terminal performs When the RR channel allocated by the network is not obtained, the target frequency point is determined to be an abnormal frequency point, where N is a preset threshold.
The apparatus for detecting an abnormal frequency point according to claim 7, wherein the RR channel acquiring unit is specifically configured to: send an RR channel request message to the network, and wait for an IA message returned by the network, where the IA The message carries an RR channel allocated by the network to the terminal.
The abnormal frequency detecting device according to claim 8, wherein

The RR channel acquisition unit is further configured to: when the RR channel acquisition process is performed for the i-th time, when the terminal does not receive the IA message sent by the network, determine whether the number of times i of performing the RR channel acquisition process is less than N When the number of times i of performing the RR channel acquisition procedure is less than N, the RR channel request message is sent to the network again, and the number of times the RR channel acquisition procedure is performed is incremented by one;

The first abnormal frequency detection unit is configured to: when the number of times i of performing the RR channel acquisition process is greater than or equal to N, determine that the target frequency is an abnormal frequency; wherein i is a positive integer.
The apparatus for detecting an abnormal frequency according to claim 7, wherein the apparatus further comprises:

a radio resource establishing unit, configured to: when the terminal acquires the RR channel allocated by the network, send a SABM frame to the network based on the RR channel, and start a timer to wait for a UA frame returned by the network;

The second abnormal frequency detecting unit is configured to determine, before the timer expires, whether the terminal receives the UA frame returned by the network; when the timer expires, the terminal does not receive When the UA frame returned by the network is determined, the target frequency point is determined to be an abnormal frequency point.
The abnormal frequency detecting device according to claim 10, wherein said timing The device is a T200 timer.
The apparatus for detecting an abnormal frequency point according to any one of claims 7 to 11, wherein the apparatus further comprises:

a marking unit configured to mark the abnormal frequency point and store the marked abnormal frequency point in the abnormal frequency point database;

a screening unit, configured to: when the CS paging message is received again, filter, according to the abnormal frequency point database, a frequency of the GSM cell to be scanned, where the frequency of the GSM cell to be scanned does not include the abnormality The frequency of the anomaly in the frequency database.
A computer storage medium having stored thereon computer executable instructions for performing the method steps of any of claims 1-6 when executed by a processor.