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Method and device for searching network coverage dead zone in mobile communication network

A mobile communication network and network search technology, which is applied in the field of network coverage blind spot search based on traffic statistics data, can solve problems such as limited data, limited range of drive test, and inability to accurately reflect signal coverage, so as to achieve high accuracy and avoid Comprehensive effect of use and data coverage

Inactive Publication Date: 2014-09-10
CHINA ACADEMY OF INFORMATION & COMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the accumulation of drive test data not only requires a lot of manpower and material resources, but also the data of the drive test is limited, and the range of the drive test is also limited, which cannot accurately reflect the signal coverage and cannot find areas with poor signal quality in time, so we can only wait. Blind spots can only be discovered after user complaints

Method used

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  • Method and device for searching network coverage dead zone in mobile communication network
  • Method and device for searching network coverage dead zone in mobile communication network
  • Method and device for searching network coverage dead zone in mobile communication network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Taking a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) network as an example, a user equipment (User Equipment, UE) must establish a signaling connection when switching on and off, registering, updating a location area, and performing services. First, the UE must first send a wireless Resource Control Protocol (Radio Resource Control, RRC) Connection Request (RRC Connection Request), and the RRC Connection Request message carries the UE's identity, establishment reason, and the received signal code power (Received Signal Code Power, RSCP) value of the current cell and other information.

[0030] In Embodiment 1, in this example, 5 cells in the TD-SCDMA network are taken as an example for illustration, such as figure 1 As shown, a method for finding a network coverage hole in a mobile communication network includes:

[0031] S101. Extract the first level value, ie, the RSCP value, of each cell when the RRC connection is established with a time granu...

Embodiment 2

[0044] In Embodiment 2, in this example, three cells in the TD-SCDMA network are taken as an example for illustration, such as figure 2 As shown, a method for finding a network coverage hole in a mobile communication network includes:

[0045] S201. Extract the second level value, ie, the RSCP value, of each cell when switching within a radio network controller (Radio Network Controller, RNC) with a time granularity of one day from the background system of the network.

[0046] S202. Compare the magnitude of the RSCP with a second predetermined value (eg -95dbm).

[0047] S203. Obtain the number of successful intra-RNC handovers with RSCP<-95dbm, as shown in Table 2.

[0048] Table 2

[0049]

[0050] S204, calculate the ratio of the number of successful handovers in the RNC with RSCP<-95dbm to the total number of successful handovers in the RNC in the cell, and use the ratio as the second judgment value, expressed as B, specifically, the number of successful handovers i...

Embodiment 3

[0057] RRC (Radio Resource Control Protocol): From the perspective of signaling tracking, after the RNC sends the RRC Connection Setup (rrcConnectionSetup) request, it does not receive the RRC Connection Setup Complete (rrcConnectionSetupcomplete) message reported by the UE, then the KPI (Key Performance Indicator) counts RRC The cause of establishment failure is no reply (no response).

[0058] RAB (Radio Access Bearer): From the perspective of signaling tracking, after the RNC sends out the radio bearer setup (radiobearerSetup) and radio link reconfiguration (radiolinkreconfigurationcommit) requests, it does not receive the radio link reestablishment indication (RadioLinkRestoreIndication) reported by the base station and the UE The radio bearer setup completed (radiobearerSetupcomplete), the KPI statistics show that the cause of RAB setup failure is Ue_Operate_TimeOut (terminal operation timeout).

[0059] During the establishment of RRC, the number of times of no reply of ...

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Abstract

The invention discloses a method and device for searching a network coverage dead zone in a mobile communication network. The method comprises the steps of: extracting microphone data of each cell within specified time and granularity from a background system of the network and determining whether the covering region of each cell exists poor coverage based on the extracted microphone data, wherein the region with poor coverage is the network coverage dead zone if the covering regions exist poor coverage. Correspondingly, the device comprises a data extracting module for extracting microphone data of each cell in the specified time and granularity from a background system of the network and a dead zone analyzing module for determining whether the covering region of each cell exists poor coverage based on the extracted microphone data, wherein the region with poor coverage is the network coverage dead zone if the covering regions exit poor coverage. Accoding to the invnetion, the network coverage dead zone is searched based on the microphone data of the network system in an execution manner; the microphone data is directly extracted from the background of the system easily and conveniently; and moreover, the microphone data has universal coverage and the searching accuracy is high.

Description

technical field [0001] The present invention generally relates to the field of mobile communication, and in particular to a method and corresponding equipment for finding a network coverage blind area based on traffic statistics data in a mobile communication network. Background technique [0002] After the mobile communication network is built, there will often be some coverage blind spots. At present, the drive test is usually the main method of checking the blind spots. Through the accumulation of a large number of drive tests, the coverage blind spots existing in the existing network are found, and then the blind spots are filled. means to solve the coverage problem. [0003] However, the accumulation of drive test data not only requires a lot of manpower and material resources, but also the data of the drive test is limited, and the range of the drive test is also limited, which cannot accurately reflect the signal coverage situation, and cannot find areas with poor sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04W76/02
Inventor 潘峰闫丽胡坚波王三暖王川
Owner CHINA ACADEMY OF INFORMATION & COMM
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