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Interference measuring method and apparatus in wireless communication system

A wireless communication system and interference measurement technology, applied in the field of interference measurement in wireless communication systems and devices thereof, can solve the power level and channel occupation time of interference source interference, the influence of communication system cannot be obtained reliably and cannot be clearly distinguished Problems such as the difference between interference sources

Inactive Publication Date: 2011-06-01
SIEMENS AG
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  • Abstract
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Problems solved by technology

[0007] The above-mentioned methods of knowing the interference source and its power are passive observation (Passive Observation), and the passive monitoring method cannot clearly distinguish the difference between the above-mentioned different interference sources
Furthermore, it is impossible to draw reliable conclusions about the influence of factors such as the number of interference sources, the power level of interference, and the channel occupation time on the communication system

Method used

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  • Interference measuring method and apparatus in wireless communication system
  • Interference measuring method and apparatus in wireless communication system
  • Interference measuring method and apparatus in wireless communication system

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Embodiment Construction

[0030] The WLAN system accessed by CSMA / CA is taken as an example below to illustrate the interference measurement method in the wireless communication system of the present invention. The core idea of ​​the present invention is to use the parameter of channel access delay to indirectly reflect the size and distribution of interference, especially the impact of access mechanism on the wireless communication system.

[0031] exist figure 1 In the shown interference measurement method in the WLAN communication system, the following steps are included:

[0032] Step 101: A WLAN network device in the WLAN communication system stops sending payload data. Alternatively, there are features in the payload data that enable the payload data to be used as a test packet to measure interference, in which case the payload data can be used as the test packet.

[0033] Step 102: The WLAN network device generates at least one test packet, sends the test packet to other network devices in the...

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Abstract

The invention provides an interference measuring method in a wireless communication system, which comprises steps as follows: (1) a network device in the wireless communication system stops transmitting valid load data; (2) the network device generates at least one test pack, transmits the test pack to other network devices in the wireless communication system, and records the average channel access delay of the test pack; and (3) the interference in the wireless communication system is judged according to the average channel access delay. In the method, the parameter average channel access delay is used as a mark for quantifying the interference, thereby evaluating the influence of the interference on the wireless communication system without modifying the hardware of the communication device.

Description

technical field [0001] The invention relates to an interference measurement method and a device thereof, in particular to a method and a device for interference measurement in a wireless communication system. Background technique [0002] There are interferences from all parties in the digital wireless communication system, among which, the wireless communication system accessed by carrier sense multi-access / collision avoidance (Carrier Sense Multi-Access / Collision Avoidance; CSMA / CA) is a A commonly used communication system, which includes communication systems such as wireless local area network IEEE802.11, WLAN, IEEE802.15.4, etc. as standards. [0003] In order to determine the most suitable communication parameters (such as wireless channel, channel bandwidth, etc.) in the communication network, or to estimate the throughput and / or average packet delay of the communication system in a given environment, some network nodes in the network ( Even all network nodes) need ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04W28/04H04L1/00
CPCH04L1/206H04W24/10H04L1/24H04W24/00H04W28/04
Inventor 兰普·马蒂尔斯田继锋李志军穆勒·约克
Owner SIEMENS AG
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