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Method and equipment for indentifying interference source cell and adjusting antenna downward inclination angle of cell

An antenna downtilt and interference source technology, which is applied to antennas, transmission monitoring, electrical components, etc., can solve problems such as uplink synchronization interference, reduce the traffic volume of the transmission system, and achieve the effect of reducing uplink synchronization interference.

Active Publication Date: 2011-06-01
CHINA MOBILE GRP BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the UpPTS Shifting scheme can reduce the uplink synchronization interference, the UpPTS Shifting scheme also has the following problems: because in the UpPTS Shifting scheme, the uplink pilot time slot of base station A is pushed back for a period of time, it will occupy service time slots such as TS1 and TS2, Therefore, it will reduce the traffic that the transmission system can carry, that is, the UpPTS Shifting scheme reduces uplink synchronization interference at the expense of uplink transmission capacity; even if the uplink pilot time slot and TS1 common time slot technology is used to solve the problem of uplink transmission capacity reduction , since there is also interference between the uplink pilot time slot and TS1, it will additionally cause the problem of uplink synchronization interference

Method used

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  • Method and equipment for indentifying interference source cell and adjusting antenna downward inclination angle of cell
  • Method and equipment for indentifying interference source cell and adjusting antenna downward inclination angle of cell
  • Method and equipment for indentifying interference source cell and adjusting antenna downward inclination angle of cell

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Embodiment 2

[0049] like image 3 As shown, it is a schematic diagram of a method for adjusting the antenna downtilt angle of a cell in Embodiment 2 of the present invention. The method in Embodiment 2 includes the following steps:

[0050]Step 201: In every two cells in the set area, determine the interference power of the signal transmitted by one cell on the DwPTS to the signal received by the other cell on the UpPTS.

[0051] Step 202: Use the cell whose sum of the received interference power is greater than the first threshold value as the interfered cell.

[0052] Step 203: Determine the interfering source cell corresponding to each interfered cell.

[0053] Step 204: Adjust the downtilt angle of the antenna of the interfering source cell.

[0054] After the antenna downtilt of the interference source cell is adjusted, the interference power to the corresponding interfered cell is smaller than the interference power to the corresponding interfered cell before the antenna downtilt i...

Embodiment 1

[0076] Steps 101 to 103 in the first embodiment are the same as steps 201 to 203 in the second embodiment.

Embodiment 3

[0078] Embodiment 3 of the present invention further adjusts the frequency point of the interference source cell after adjusting the downtilt angle of the interference source cell in Embodiment 2, so as to further reduce the uplink synchronization interference of the interference source base station to the corresponding cell.

[0079] Such as Figure 4 As shown, it is a schematic diagram of the method in Embodiment 3 of the present invention, wherein Step 301 to Step 304 are the same as Step 201 and Step 204 in Embodiment 2.

[0080] Step 305: After adjusting the downtilt angle of the antenna of the interference source cell, when there is still relatively large uplink synchronization interference between the cells, adjust the frequency point of the interference source cell.

[0081] After the frequency point adjustment of the interference source cell, the interference power to the corresponding interfered cell is smaller than the interference power to the corresponding interfe...

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Abstract

The invention discloses a method and equipment for indentifying an interference source cell and adjusting the antenna downward inclination angle of a cell. The main content is as follows: an interference model of inter-cell downlink pilot time slot (DwPTS) to uplink pilot time slot (UpPTS) is taken as a standard for an interference prioritization scheme; and an interfered cell and the interference source cell are determined according to the interference model, thus reducing the interference power of the interfered cell through adjusting the antenna downward inclination angle of the interference source cell, and reducing the inter-cell uplink synchronization interference under the condition of avoiding the problem existing in an UpPTS Shifting scheme exists.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and equipment for determining an interference source cell and adjusting the downtilt angle of an antenna of the cell. Background technique [0002] There are special time slots in the frame structure of TD-SCDMA, such as figure 1 As shown, the downlink pilot time slot (DwPTS) is followed by the guard time slot (GP) and the uplink pilot time slot (UpPTS). For base station A, since the downlink pilot signals transmitted by other base stations with the same frequency reach base station A after a period of transmission, when base station A receives the uplink synchronization signal (SYNC_UL) transmitted by the mobile terminal in the uplink pilot time slot, At the same time, the downlink pilot signal transmitted by other base stations with the same frequency will be received, and the uplink synchronization interference problem will occur, which may eventually cause the mobile termi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H01Q3/32
Inventor 于志文啜钢郭同文刘圣赵良毕王文博胡欲晓李勇李欣然
Owner CHINA MOBILE GRP BEIJING
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