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Method of calibrating terminals with multi-sector antennas, mesh network terminals and mesh networks

A grid network, multi-sector technology, applied in network topology, wireless communication, radio transmission system and other directions to achieve the effect of antenna sector optimization

Inactive Publication Date: 2014-10-15
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008]On the one hand, mesh networks have co-channel links in a reduced size cellular environment, on the other hand CSMA / CA (Carrier Sensing with Collision Avoidance The MAC (Media Access Control) structure of 802.11 of the Multiple Access) type makes it possible to operate each link between the channels at a shared time in order to avoid packet collisions, the result is very poor in space reuse and thus the transmission capacity of the network reduce

Method used

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  • Method of calibrating terminals with multi-sector antennas, mesh network terminals and mesh networks
  • Method of calibrating terminals with multi-sector antennas, mesh network terminals and mesh networks
  • Method of calibrating terminals with multi-sector antennas, mesh network terminals and mesh networks

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Embodiment Construction

[0030] The principle of the invention is to operate a calibration phase of the network that makes it possible at each terminal (access point) located at a node of the network to simultaneously analyze both with regard to the identification of the terminals present in its environment and with regard to the reception of the identified terminals The configuration of its reception in terms of level, this phase is carried out by a sequential scan over 360° of the antenna sector of the terminal, the information derived from this scan being stored in the memory of each terminal.

[0031] exist figure 2 The present method outlined in the illustration of is based on the reception by the terminal to be calibrated of an SSID (Service Set Identifier) ​​identifier, information included in the header of a network identification packet transmitted by another terminal of the network under consideration.

[0032] For each terminal of the network under consideration, these identifiers and asso...

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Abstract

The invention relates to a method for calibrating a terminal with a multi-sector antenna in a mesh broadcast network comprising at least one other terminal. The method comprises the steps of selecting one of the sectors of the antenna of the terminal to be calibrated, receiving through the selected sector an identification signal transmitted by each of the other terminals present in the network and information about the received signal level information, as well as storing for each sector in the memory of the terminal to be calibrated the different identification signals of the terminals present in the network and information about the received signal level.

Description

technical field [0001] The invention relates to a method for calibrating a terminal comprising a multi-sector antenna in a mesh network. The invention also relates to a mesh network terminal comprising such a multi-sector antenna and a mesh network connecting different terminals together. Background technique [0002] Terminals comprising multiple antennas or multi-sector antennas are used in particular in MIMO (Multiple Input Multiple Output) type devices of the standards 802.11 or 802.16, and more particularly in the context of mesh networks in which In an environment where sector antennas are used to authorize the routing of data to different nodes of the network via beamforming techniques. [0003] Clearly, the efficiency of the end system is increased due to the use of directional antennas to maximize the capacity of the transmission channel. In fact, they make it possible to significantly reduce the disturbances that are the cause of sudden drops in network capacity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/00H04W84/18
CPCH04B17/0062H04B17/318H04W84/18H04B17/0057H04B17/21H04B1/006H04B7/0491H04W88/06
Inventor J-L.罗伯特A.洛齐尔P.米纳德P.查姆贝林
Owner THOMSON LICENSING SA