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Method and system for regulating switch-in point transmitting power

A transmission power and access point technology, applied in the direction of transmission control/equalization, etc., can solve problems such as the inability to guarantee the effect of co-channel interference, increase the cost of implementation, and decrease the overall performance of the network, so as to improve system throughput and reduce co-frequency interference. Interference, effect of increasing coverage

Inactive Publication Date: 2007-01-03
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] 1. It is necessary to change the frame structure and frame content of the existing IEEE802.11 protocol, including changing the frame format, so that the existing protocol equipment must be improved, which increases the implementation cost
[0012] 2. The existing technology adjusts the AP transmit power mainly from the perspective of energy saving. Although the same-channel interference can be reduced to a certain extent, the effect of reducing the same-channel interference cannot be guaranteed; and, only considering energy saving, it is easy to cause the overall performance of the network to deteriorate. decline

Method used

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  • Method and system for regulating switch-in point transmitting power

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Embodiment Construction

[0049] The core idea of ​​the present invention is: add an access controller (AC) specially used for power control to all APs in the system, the AC determines the channel quality of the AP by sending data packets to the AP, if the channel quality of the AP is detected If it is less than the predetermined lower limit adjustment value, then increase the transmit power of the AP; if it is detected that the channel quality of the AP is greater than the predetermined upper limit adjustment value, then reduce the AP transmit power.

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] image 3 is a flow chart of adjusting the transmit power of the AP provided by the embodiment of the present invention. In this embodiment, an AC is added, such as image 3 As shown, the specific steps are as follows:

[0052] Step 301: the AC acquires the address list of STAs accessing the AP from the...

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PUM

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Abstract

This invention discloses a method for adjusting AP emission power including: computing the current channel quality of the AP to adjust its emission power, namely, when the current channel quality of AP is tested to be smaller than a preset lower limit adjustment value, the AP emission power is increased, when the quality is greater than a preset upper limit value, the emission power of AP is reduced, which discloses a system for adjusting AP emission power including: AC and AP and gets balance between information resource utilization and data transmission quality guarantee and applies ICMP for signaling interaction without changing the protocol contents of the MAC layer and the physical layer of current IEEE 802.11.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and system for adjusting the transmission power of an access point. Background technique [0002] Wireless Local Area Network / Wireless Personal Area Network (WLAN / WPAN) has developed rapidly in the past ten years, among which WLAN of IEEE802.11b standard is most widely used. According to the IEEE802.11 protocol, each access point (AP) has a certain coverage area, and the stations (STAs) located within the coverage area of ​​each AP are connected to the AP to form a basic service set (BSS), such as figure 1 shown. The coverage of adjacent BSSs can easily overlap each other. For example: IEEE802.11b / g works in the 2.4GHz public frequency band. In the 83.5M bandwidth, although there are 13 channels, only 3 channels that do not interfere with each other can exist at the same time. Therefore, adjacent APs are likely to be on the same channel. In this way, whe...

Claims

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Application Information

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IPC IPC(8): H04B7/005
Inventor 曾澄党文栓徐雅静闫晓东徐惠民
Owner HUAWEI TECH CO LTD
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