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Control method and system for uplink and downlink power

A power control and transmission power technology, applied in the field of power control, can solve the problems of occupying cell resources, easy to cause call drop, increase of soft handover between indoor cells and outdoor cells, etc., to achieve the effect of improving the effect and reducing the interference

Inactive Publication Date: 2007-11-28
SHANGHAI HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the increase of pilot power in indoor cells will lead to a large increase in soft handover between indoor cells and outdoor cells, occupying a large amount of cell resources, and in the process of soft handover, it is easy to cause call drop and other phenomena that affect user performance

Method used

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  • Control method and system for uplink and downlink power
  • Control method and system for uplink and downlink power
  • Control method and system for uplink and downlink power

Examples

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Effect test

example 1

[0078] Example 1: In the case that there are communication signals in the outdoor network, calculate the interference of indoor communication on the outdoor network, that is, estimate the interference signal leaked out of the downlink.

[0079] R(m)

L(dB, outdoor)

L (dB, indoor)

0.1

-34.21602904

-7

1

-44.21602904

-37

2

-47.226329

-46.03089987

3

-48.98724159

-51.31363764

4

-50.23662895

-55.06179974

5

-51.20572908

-57.96910013

6

-51.99754154

-60.34453751

7

-52.66700944

-62.3529412

8

-53.24692891

-64.09269961

9

-53.75845413

-65.62727528

10

-54.21602904

-67

[0080] Table 1

[0081] The interference signal generated by indoor cell leakage can be described by the following formula:

[0082] Downlink interference...

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Abstract

The invention discloses a controlling method and system of upward-downward power in the wireless communicating domain to reduce the indoor communication for outdoor interference, which comprises the following steps: calculating downward interference control threshold corresponding to calculating chamber according to the downward signal sampling data of adjacent areas; counting upward interference control threshold corresponding to calculating chamber according to the upward signal sampling data in the indoor area; judging the downward and / or downward launching power for the terminal for the terminal in the indoor area during power controlling stage; modulating the power not according to the judging result if the judging result affirms that the downward launching power of terminal at network side will be more than the downward interference control threshold; modulating the downward launching power of terminal to the downward interference control threshold; modulating the upward launching power of terminal to the upward interference control threshold if the judging result affirms that the upward launching power of terminal at network side will be more than the upward interference control threshold.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to power control technology. Background technique [0002] Code Division Multiple Access (CDMA for short) communication system occupies a pivotal position in mobile communication, especially in the third generation of mobile communication (The Third Generation, referred to as "3G"), the three relatively mature standards All belong to the category of CDMA. In a CDMA system, because all users share the same frequency, the mutual interference problem is prominent, so power control is very critical. Whether it is uplink or downlink, it is very necessary to keep the transmit power at the minimum power level that can meet the communication quality requirements, because too small power will cause users to be dissatisfied with the communication quality, and too much power will reduce the operational efficiency of the communication system . [0003] There are generally two power cont...

Claims

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Application Information

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IPC IPC(8): H04B7/005
CPCH04W52/12H04W52/243
Inventor 陈新钟华正
Owner SHANGHAI HUAWEI TECH CO LTD
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