CN106888471B

CN106888471B - Method and device for determining mobile network signal blind area

Info

Publication number: CN106888471B
Application number: CN201510946554.5A
Authority: CN
Inventors: 王燕; 吴振森; 李乾; 祝远建; 卢晓炯; 田江; 李文良
Original assignee: Xidian University; China Mobile Group Jiangsu Co Ltd
Current assignee: Xidian University; China Mobile Group Jiangsu Co Ltd
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2020-05-12
Anticipated expiration: 2035-12-16
Also published as: CN106888471A

Abstract

The invention discloses a method and a device for determining a mobile network signal blind area, wherein the method comprises the following steps: aiming at a non-4G base station, determining a 4G mobile terminal accessing to the non-4G base station; determining a target mobile terminal for starting a 4G network from the 4G mobile terminals accessed to the non-4G base station; determining the sum of access duration of the target mobile terminal accessed to the non-4G base station in a set time period according to the target mobile terminal; and when the sum of the determined access duration is greater than a set threshold, determining the cell covered by the non-4G base station as a blind area, so as to solve the defect that the blind area of the mobile network cannot be accurately found in the prior art.

Description

Method and device for determining mobile network signal blind area

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for determining a signal blind area of a mobile network.

Background

The 4G (the 4th Generation mobile) network brings richer and faster network experience to people, and network coverage is greatly improved, but inevitably, some coverage blind spots exist, which affect the user's data service use perception. Therefore, network blind areas need to be continuously eliminated, and network coverage needs to be optimized, so that better data service perception is brought to users.

In the prior art, network blind areas are searched through drive test, but the drive test data not only needs to spend a large amount of manpower and material resources, but also has a limited drive test range, cannot find areas with poor signal quality in time, and can find coverage blind areas only after complaints of users.

Another method for eliminating network blind areas in the prior art is as follows: extracting coverage blind areas in the network according to the traffic statistic data, for example, extracting traffic data of each cell in a specified time granularity from a background system of the network; and determining whether weak coverage exists in coverage areas of all the cells according to the extracted voice system data, wherein if the weak coverage exists, the areas with the weak coverage are network coverage blind areas. However, this method has the following drawbacks: traffic statistics generation tends to be lagged and poor in real-time, while users in the network are dynamically changing in real-time. Secondly, the method searches for a network coverage hole by finding out a user who does not generate 4G traffic, however, there are some human reasons, such as that the terminal is artificially locked in a 2G (the 2nd Generation mobile) or 3G (the 3rd Generation mobile) network, and will not generate 4G traffic, and such a user is not generated 4G traffic due to network reasons, which may cause misjudgment.

In summary, the method for determining the signal blind area of the mobile network in the prior art has the disadvantage of low accuracy.

Disclosure of Invention

The embodiment of the invention provides a method and a device for determining a mobile network signal blind area, which are used for solving the defect that the mobile network blind area cannot be accurately found in the prior art.

The method comprises a method for determining a mobile network signal blind area, which comprises the following steps: aiming at a non-4G base station, determining a 4G mobile terminal accessing to the non-4G base station; determining a target mobile terminal for starting a 4G network from the 4G mobile terminals accessed to the non-4G base station; determining the sum of access duration of the target mobile terminal accessed to the non-4G base station in a set time period according to the target mobile terminal; and when the sum of the determined access duration is greater than a set threshold, determining that the cell covered by the non-4G base station is a blind area.

Based on the same inventive concept, the embodiment of the present invention further provides an apparatus for determining a signal blind area of a mobile network, the apparatus comprising: the mobile terminal determining unit is used for determining a 4G mobile terminal accessing to a non-4G base station aiming at the non-4G base station; a target mobile terminal unit is determined, which is used for determining a target mobile terminal for starting a 4G network from the 4G mobile terminals accessed to the non-4G base station; an access duration summation determining unit, configured to determine, according to the target mobile terminal, a sum of access durations that the target mobile terminal accesses to the non-4G base station within a set time period; and the blind area determining unit is used for determining the cell covered by the non-4G base station as a blind area when the sum of the determined access duration is greater than a set threshold.

On one hand, the embodiment of the invention determines the 4G mobile terminal accessed to the base station through the 2G base station and the 3G base station, and eliminates the 4G mobile terminal without opening the 4G network from the 4G mobile terminal to obtain the final target mobile terminal; and on the other hand, determining the sum of access duration of the target mobile terminal accessed to the non-4G base station in a set time period, and when the determined sum of the access duration is greater than a set threshold, determining that the cell covered by the non-4G base station is a blind area. Therefore, the embodiment of the invention obtains an accurate target mobile terminal by excluding the 4G mobile terminal which does not start the 4G network, counts the sum of the access time lengths of the target mobile terminal accessing the non-4G base station in a set time period, and proves that the terminals in the coverage range of the base station all generate backflow when the determined sum of the access time lengths is greater than a set threshold value, so that the coverage effect of the 4G network of the base station is not good and the base station is determined to be a blind area.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic flow chart illustrating a method for determining a mobile network signal blind area according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a 2G/3G network topology according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating a method for systematically determining a mobile network signal dead zone according to an embodiment of the present invention;

fig. 4 is a diagram of an apparatus for determining a signal blind area of a mobile network according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Various aspects are described herein in connection with a terminal and/or a base station. Terminals, devices that provide voice and/or data connectivity to a user, including wireless terminals or wired terminals. The wireless terminal may be a handheld device having wireless connection capabilities, or other processing device connected to a wireless modem, a mobile terminal communicating with one or more core networks via a radio access network. For example, wireless terminals may be mobile telephones (or "cellular" telephones) and computers with mobile terminals. As another example, a wireless terminal may be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device. As another example, a wireless terminal may be part of a mobile station (mobile station), an access point (access point), or a User Equipment (UE).

Referring to fig. 1, an embodiment of the present invention provides a flow diagram of a method for determining a mobile network signal blind area, and a specific implementation method includes:

step S101, aiming at a non-4G base station, determining a 4G mobile terminal accessing to the non-4G base station.

And step S102, determining a target mobile terminal for starting the 4G network from the 4G mobile terminals accessed to the non-4G base station.

And step S103, determining the sum of access time lengths of the target mobile terminal accessed to the non-4G base station in a set time period according to the target mobile terminal.

And step S104, when the sum of the determined access duration is greater than a set threshold, determining that the cell covered by the non-4G base station is a blind area.

In step S101, a non-4G base station generally includes a 2G or 3G base station, and acquires, for a non-4G base station, an original signaling of a signaling link of a Gb interface and a luPS interface of the non-4G base station, and analyzes the original signaling, so as to acquire a TDR (event detail record) corresponding to the original signaling; and determining the 4G mobile terminal accessed to the non-4G base station according to the International Mobile Equipment Identity (IMEI) in the TDR.

Specifically, as shown in fig. 2, the 2G/3G network topology in the figure includes: a base station transceiver station (BTS), a Base Station Controller (BSC), a GPRS service support node (SGSN), a GPRS Gateway Support Node (GGSN), and a Public Data Network (PDN); 3G mobile base stations (Node B), Radio Network Controllers (RNC), Other public land mobile networks (Other PLMN). Wherein, the interface between SGSN and BSC is Gb interface; the interface between RNC and SGSN is IuPS interface. The Gb interface protocol is used to transmit signaling and data information, i.e. the interface both transmits signaling and transmits internet data of the mobile terminal. A network side actively acquires original signaling of a signaling link of a Gb interface and an IuPS interface within a period of time, and generates a characteristic value according to an attachment acceptance message or a routing area update acceptance message when the acquired original signaling is the attachment acceptance message or the routing area update acceptance message; and determining the corresponding TDR according to the characteristic value.

Specifically, when acquiring signaling of a signaling link of a Gb interface, synthesizing a characteristic value according to a TLLI (temporary link indicator) of an attach request message or a routing area update request message, and establishing a mapping relationship between the signaling characteristic value and the TDR; when the obtained signaling is judged to be the attachment acceptance message or the routing area updating acceptance message, according to the temporary link indication TLLI synthesis characteristic value when the attachment acceptance message or the routing area updating acceptance message is received, and according to the synthesis characteristic value and the mapping relation, searching the corresponding TDR; when obtaining the signaling of the signaling link of the IuPS interface, synthesizing a characteristic value according to the source reference address SLR of the attachment request message or the routing area updating request message, and establishing the mapping relation between the signaling characteristic value and the TDR; and when the obtained signaling is judged to be the attachment acceptance message or the routing area updating acceptance message, synthesizing the characteristic value according to the DLR (destination reference address) when the attachment acceptance message or the routing area updating acceptance message, and searching the corresponding TDR according to the synthesized characteristic value and the mapping relation.

It should be noted that: the attach REQUEST message and the ROUTING AREA UPDATE REQUEST message are defined in practical applications as attach REQUEST message and ROUTING AREA UPDATE REQUEST message. The processing of the signaling is a routine technique for those skilled in the art and will not be described herein.

Considering that the TDR includes the IMEI of the terminal, the first 6 digits of the intercepted IMEI are TAC (Type Approval Code), and since the TAC is the first 6 digits of the IMEI, the TAC is a terminal model Approval Code, and generally represents a model. Then, the IMEI database is compared according to the existing terminal, whether the model corresponding to a certain IMEI is a 4G terminal can be judged through the corresponding relation between the IMEI database of the existing terminal and the IMEI of the terminal contained in the DR, and then 2G or 3G terminals can be filtered out, so that the 4G terminal accessed in the period of time can be obtained.

In order to further filter out the situation that the 4G network is not opened by the 4G terminal due to human factors, the embodiment of the present invention further obtains the evolved packet core network capability field of the mobile terminal from the TDR, and determines the target mobile terminal for opening the 4G network according to the evolved packet core network capability field.

It should be noted that the mobile station network capability and evolved packet core network capability fields are represented by E-UTRA TDD support fields in the existing network application. Judging whether the mobile terminal has the 4G network capability according to the evolved packet core network capability field in the mobile station network capability information specifically comprises the following steps:

when the value of the evolved packet core network capability field is supported, determining that the mobile terminal has the 4G network capability; otherwise, determining that the mobile terminal does not have the 4G network capability. This has the effect that the determination result of the signal blind area of the mobile network can be made more accurate.

After the mobile terminal with the 4G network capability is determined, the network side counts the sum of the access time lengths of the part of terminals in a set time period, then compares the sum of the access time lengths with a set threshold value, and if the sum of the access time lengths is greater than the set threshold value, defines a cell covered by the base station as a blind area. The set threshold is determined according to actual conditions, and is not limited herein.

After the blind area is determined, determining position information corresponding to the blind area, and determining the position of the 4G base station to be deployed according to the position information; or determining the position information corresponding to the blind area, determining the 4G base station corresponding to the position information according to the position information, and optimizing the network signal of the 4G base station.

For example, the cell corresponding to the base station a is a blind area, and at this time, the base station B closest to the base station a is a 4G base station, and a method such as increasing the transmission signal power of the 4G base station may be adopted to improve the 4G network signal of the base station a.

The following describes a procedure for determining a signal shadow area of a mobile network in a systematic manner with reference to fig. 3, and the specific steps are as follows.

Step 301: and collecting original signaling of a Gb interface and an IuPS interface, wherein the original signaling comprises messages of attachment, tracking area updating, authentication encryption request response and the like.

Step 302: analyzing the original signaling collected in step 301, obtaining the number of cell users, the user online duration, the IMEI and the wireless access capability from the analyzed original signaling, wherein the wireless access capability reported by the terminal is embodied in the E-UTRA TDD support field in the update message of the attachment and tracking area.

Step 303: and intercepting the first 6 TACs according to the IMEI acquired in the steps, comparing the acquired TACs in an IMEI library of the terminal, and judging whether the terminal is a 4G terminal.

Step 304: if the terminal determined in step 303 is a 4G terminal, the wireless access capability reported by the terminal is checked in the analysis result of step 302, and if the field of E-UTRA TDD supported is supported, that is, the reporting capability shows that the terminal supports a 4G network, it indicates that the terminal normally uses a 4G function, and such a user is the target mobile terminal to be analyzed.

Step 305: and according to the target mobile terminal obtained in the step, counting the sum of the access time of the 2G or 3G network where the terminal is located.

Step 306: when the sum of the access durations obtained in the step 305 is greater than the set threshold, it is determined that the cells covered by the non-4G base station have the problems of poor signal coverage, weak coverage and the like, that is, it is determined that the cells are covered by the 4G network and have blind areas, and for the cells of this type, related personnel can be contacted in time to perform network optimization.

Based on the same technical concept, an embodiment of the present invention further provides a device for determining a signal blind area of a mobile network, including: determine mobile terminal unit 401, determine target mobile terminal unit 402, determine access duration summation unit 403, and determine blind zone unit 404. The device may perform the above-described method embodiments. An apparatus provided by an embodiment of the present invention is shown in fig. 4. Wherein:

a determining mobile terminal unit 401, configured to determine, for a non-4G base station, a 4G mobile terminal accessing to the non-4G base station;

a target mobile terminal determining unit 402, configured to determine a target mobile terminal for starting a 4G network from among 4G mobile terminals accessing the non-4G base stations;

an access duration summation determining unit 403, configured to determine, according to the target mobile terminal, a sum of access durations that the target mobile terminal accesses to the non-4G base station within a set time period;

a blind area determining unit 404, configured to determine, when the sum of the determined access durations is greater than a set threshold, that a cell covered by the non-4G base station is a blind area.

Wherein the non-4G base station generally includes a 2G or 3G base station, and the determination mobile terminal unit is specifically configured to:

aiming at a non-4G base station, acquiring original signaling of a signaling link of a Gb interface and a LuPS interface of the non-4G base station, and analyzing the original signaling to acquire a TDR corresponding to the original signaling; and determining the 4G mobile terminal accessed to the non-4G base station according to the IMEI in the TDR.

Specifically, as shown in fig. 2, the 2G/3G network topology in the figure includes: a base station transceiver station (BTS), a Base Station Controller (BSC), a GPRS service support node (SGSN), a GPRS Gateway Support Node (GGSN), and a Public Data Network (PDN); 3G mobile base stations (Node B), Radio Network Controllers (RNC), Other public land mobile networks (Other PLMN). Wherein, the interface between SGSN and BSC is Gb interface; the interface between RNC and SGSN is IuPS interface. The Gb interface protocol is used to transmit signaling and data information, i.e. the interface both transmits signaling and transmits internet data of the mobile terminal. The network side actively collects original signaling of signaling links of a Gb interface and an IuPS interface within a period of time, and determines that the TDR unit 405 is configured to: when the obtained original signaling is an attachment acceptance message or a routing area update acceptance message, generating a characteristic value according to the DLR when the attachment acceptance message or the routing area update acceptance message; and determining the corresponding TDR according to the characteristic value.

Considering that the TDR includes the IMEI of the terminal, the first 6 intercepted IMEI is TAC, because the TAC is the first 6 digits of the IMEI, is a terminal model approval code, and generally represents a model. Then, the IMEI database is compared according to the existing terminal, whether the model corresponding to a certain IMEI is a 4G terminal can be judged through the corresponding relation between the IMEI database of the existing terminal and the IMEI of the terminal contained in the DR, and then 2G or 3G terminals can be filtered out, so that the 4G terminal accessed in the period of time can be obtained.

In order to further filter out that the 4G network is not opened by the 4G terminal due to human factors, the target-determining mobile terminal unit 402 according to the embodiment of the present invention is specifically configured to:

and acquiring the capability field of the evolved packet core network of the mobile terminal from the TDR, and determining a target mobile terminal for starting the 4G network according to the capability field of the evolved packet core network.

when the value of the evolved packet core network capability field is supported, determining that the mobile terminal has the 4G network capability; otherwise, determining that the mobile terminal does not have the 4G network capability.

After the blind area is determined, the network optimization unit 406 is configured to determine location information corresponding to the blind area, and determine a location of the 4G base station to be deployed according to the location information; or determining the position information corresponding to the blind area, determining the 4G base station corresponding to the position information according to the position information, and optimizing the network signal of the 4G base station.

An application process of the apparatus for determining a signal shadow area of a mobile network is further systematically described in conjunction with fig. 3, and specific steps are as follows.

Step 301: determining that the mobile terminal unit 401 collects original signaling of a Gb interface and an IuPS interface, where the original signaling includes messages such as attach, tracking area update, authentication and encryption request response.

Step 302: determining that the mobile terminal unit 401 analyzes the original signaling collected in step 301, and obtains the number of cell users, the user online duration, the IMEI, and the wireless access capability from the analyzed original signaling, where the wireless access capability reported by the terminal is specifically embodied in the E-UTRA TDD support field in the attach and tracking area update message.

Step 303: the determination mobile terminal unit 401 determines that the target mobile terminal unit 402 intercepts the first 6 TAC bits according to the IMEI acquired in the above steps, compares the TAC bits with the IMEI library of the terminal, and determines whether the terminal is a 4G terminal.

Step 304: if the terminal determined by the target mobile terminal unit 402 in step 303 is a 4G terminal, the wireless access capability reported by the terminal is checked in the analysis result of step 302, and if the field of E-UTRA TDD support is supported, that is, the reported capability shows that the terminal supports a 4G network, it indicates that the terminal normally uses a 4G function, and such a user is the target mobile terminal to be analyzed.

Step 305: the access duration summation determining unit 403 calculates the sum of the access durations of the 2G or 3G networks in which the terminals are located according to the target mobile terminal obtained in the above steps.

Step 306: when the blind area determining unit 404 determines that the total access time obtained in the step 305 is greater than the set threshold, it determines that the cells covered by the non-4G base station have the problems of poor signal coverage, weak coverage and the like, that is, it is determined as a 4G network coverage blind area, and for such cells, it may contact related personnel in time to perform network optimization.

In summary, in the embodiments of the present invention, on one hand, the 2G base station and the 3G base station determine the 4G mobile terminal accessing to such base station, and exclude the 4G mobile terminal that does not start the 4G network from such 4G mobile terminal, so as to obtain the final target mobile terminal; and on the other hand, determining the sum of access duration of the target mobile terminal accessed to the non-4G base station in a set time period, and when the determined sum of the access duration is greater than a set threshold, determining that the cell covered by the non-4G base station is a blind area. Therefore, the embodiment of the invention obtains an accurate target mobile terminal by excluding the 4G mobile terminal which does not start the 4G network, counts the sum of the access time lengths of the target mobile terminal accessing the non-4G base station in a set time period, and proves that the terminals in the coverage range of the base station all generate backflow when the determined sum of the access time lengths is greater than a set threshold value, so that the coverage effect of the 4G network of the base station is not good and the base station is determined to be a blind area.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for determining a mobile network signal shadow area, the method comprising:

aiming at a non-4G base station, acquiring original signaling of a signaling link of a Gb interface and a luPS interface of the non-4G base station, analyzing the original signaling, and acquiring an event detailed record (TDR) corresponding to the original signaling;

determining a 4G mobile terminal accessed to the non-4G base station according to the international identification code IMEI of the mobile equipment in the TDR;

determining a target mobile terminal for starting a 4G network from the 4G mobile terminals accessed to the non-4G base station;

determining the sum of access duration of the target mobile terminal accessed to the non-4G base station in a set time period according to the target mobile terminal;

and when the sum of the determined access duration is greater than a set threshold, determining that the cell covered by the non-4G base station is a blind area.

2. The method of claim 1, wherein the parsing the original signaling to obtain an event detail record (TDR) corresponding to the original signaling comprises:

when the obtained original signaling is an attachment acceptance message or a routing area update acceptance message, generating a characteristic value according to the attachment acceptance message or the routing area update acceptance message;

and determining the corresponding TDR according to the characteristic value.

3. The method of claim 1, wherein determining a target mobile terminal for turning on a 4G network from among 4G mobile terminals accessing the non-4G base stations comprises:

4. The method according to any of claims 1 to 3, wherein after determining that the cell covered by the non-4G base station is a blind area, the method further comprises:

determining position information corresponding to the blind area, and determining the position of the 4G base station to be deployed according to the position information; alternatively, the first and second electrodes may be,

and determining position information corresponding to the blind area, determining a 4G base station corresponding to the position information according to the position information, and optimizing a network signal of the 4G base station.

5. An apparatus for determining a mobile network signal shadow zone, the apparatus comprising:

determining a mobile terminal unit, configured to acquire, for a non-4G base station, an original signaling of a signaling link of a Gb interface and a luPS interface of the non-4G base station, and analyze the original signaling, to acquire an event detailed record TDR corresponding to the original signaling; determining a 4G mobile terminal accessed to the non-4G base station according to the international identification code IMEI of the mobile equipment in the TDR;

a target mobile terminal unit is determined, which is used for determining a target mobile terminal for starting a 4G network from the 4G mobile terminals accessed to the non-4G base station;

an access duration summation determining unit, configured to determine, according to the target mobile terminal, a sum of access durations that the target mobile terminal accesses to the non-4G base station within a set time period;

and the blind area determining unit is used for determining the cell covered by the non-4G base station as a blind area when the sum of the determined access duration is greater than a set threshold.

6. The apparatus of claim 5, further comprising:

a TDR determining unit, configured to generate a characteristic value according to an attach accept message or a routing area update accept message when the obtained original signaling is the attach accept message or the routing area update accept message;

and determining the corresponding TDR according to the characteristic value.

7. The apparatus as claimed in claim 5, wherein said determining a target mobile terminal unit is specifically configured to:

8. The apparatus of any of claims 5 to 7, further comprising:

the network optimization unit is used for determining the position information corresponding to the blind area and deploying the 4G base station according to the position information; alternatively, the first and second electrodes may be,