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Genetic positioning algorithm under environment of single-base-station heterogeneous network

A base station and algorithm technology, applied in the field of heterogeneous networks, can solve the problems of not making full use of heterogeneous network information

Inactive Publication Date: 2013-03-13
江苏学府医疗科技有限公司
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Problems solved by technology

However, the core positioning algorithms used in the above three research works are still traditional methods, which do not make full use of heterogeneous network information.

Method used

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  • Genetic positioning algorithm under environment of single-base-station heterogeneous network

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Experimental program
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Embodiment Construction

[0023] Input: WLAN network beacon node coordinates and RSSI values ​​between unknown nodes, WCDMA base station coordinates and TOA ranging to unknown nodes.

[0024] Output: The coordinates of unknown nodes to be located in the heterogeneous network.

[0025] step:

[0026] Step1. Based on the TOA ranging value from the unknown node to the WCDMA base station , choose the inner ring radius as , the outer ring radius is The circular area of ​​, and the circular area is evenly divided into n part;

[0027] Step2. Place an initial point at the center of each segment given in Step1, and getn an initial point; use each point to calculate the similarity between the theoretical RSSI value of each WLAN beacon and the measured RSSI value of the unknown node;

[0028] Step3. Select the ring segment where the minimum similarity node is located as the initial area, and distribute it randomly and uniformly in this area sample points as the initial population of the genetic algorit...

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Abstract

The invention relates to a genetic positioning algorithm under the environment of single-base-station heterogeneous network and particularly relates to the technical field of heterogeneous network technology. Aiming at coexisting heterogeneous networks of a wireless local area network (WLAN) and a wideband code division multiple access (WCDMA) network and a scene that the edge of the WCDMA network cannot be positioned, a algorithm, namely the genetic positioning algorithm under the environment of the single-base-station heterogeneous network, for achieving a positioning function by combining with the WLAN network is provided. Due to the fact that in most cases, initial groups selected by the algorithm through similarity are always close to real nodes to be positioned, the situation that genetic searching results are converged to local optimal points occurs rarely.

Description

technical field [0001] The present invention relates to heterogeneous network technology, in particular to a genetic positioning algorithm in a single base station heterogeneous network environment (H04W wireless communication network, H04W 40 / 20 based on geographic location or positioning). Background technique [0002] In recent years, the rapid development of network communication technology has produced a wide variety of network systems, especially the development of wireless communication technology has brought rich and convenient experience to people's production and life. At present, more and more scholars and manufacturers have begun to realize: The future wireless network will be a multi-service heterogeneous network complex formed by the integration of various networks and technologies, with multiple access methods, multiple transmission rates, and multiple quality of service requirements. [0003] Positioning technology has always been a key issue in wireless tech...

Claims

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Application Information

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IPC IPC(8): H04W64/00G01S5/02
Inventor 不公告发明人
Owner 江苏学府医疗科技有限公司
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