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A cross-channel scheduling method and device for RTT measurement and positioning

A channel scheduling and channel technology, applied in the field of cross-channel scheduling methods and devices, can solve problems such as aggravating the tension of air interface resources, and achieve the effect of realizing RTT measurement and alleviating the tension

Active Publication Date: 2019-05-03
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The air interface resources of WLAN are limited. When the scale of WLAN network increases, the tension of air interface resources will be further aggravated.

Method used

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  • A cross-channel scheduling method and device for RTT measurement and positioning
  • A cross-channel scheduling method and device for RTT measurement and positioning
  • A cross-channel scheduling method and device for RTT measurement and positioning

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Embodiment Construction

[0025] In order to alleviate the tension of air interface resources and balance the functions of wireless positioning and wireless access at the same time, in solution 1, the AP deployment scheme with the same channel in the area can be adopted, that is, a large area is divided into multiple small areas, and each cell All APs in the domain are deployed on the same channel. This solution balances the functions of wireless positioning and wireless access to a certain extent by narrowing the collision domain.

[0026] The contention of air interface resources in Solution 1 depends on the size of the conflict domain. To achieve a better wireless positioning effect, generally at least 4 to 5 APs on the same channel are required. In Solution 1, these APs on the same channel Air interface resources will be shared. Therefore, in applications with large wireless access traffic, measurement packet traffic will compete with user application traffic for air interface resources, resulting ...

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Abstract

A RTT measurement method includes the following actions. Operation channels of stations in a network are traversed, and for each traversed channel, the APs in the network are instructed to perform RTT measurement for stations operating on the traversed channel, according to a list indicating stations to be measured by each AP of APs in a network.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a cross-channel scheduling method and device for round-trip time (RTT) measurement and positioning. Background technique [0002] With the application of mobile Internet and big data, indoor positioning technology based on WLAN network is becoming more and more popular, and has bright application prospects in many industries such as retail, hotel, transportation, and medical care. [0003] Traditional WLAN positioning technology relies on Received Signal Strength Indication (RSSI), which can be divided into two specific methods: triangulation based on signal transmission model and fingerprint feature based on signal sampling. Due to indoor multipath effects, obstacles and other factors, the RSSI value is very unstable, resulting in unreliable positioning results based on the RSSI value. The new generation of positioning system is based on the so-called RTT time and relies...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12
CPCH04W64/00G01S5/14G01S13/767
Inventor 李华
Owner NEW H3C TECH CO LTD