Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fast channel switching scheme for IEEE 802.11 WLANs

A channel switching and communication channel technology, applied in the field of fast channel switching mechanism, can solve problems such as delay

Inactive Publication Date: 2005-07-13
KONINK PHILIPS ELECTRONICS NV
View PDF0 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A drawback of performing channel switching according to the IEEE802.11 standard is that in some cases it is necessary to wait for at least one or more TBTTs to be known before channel switching is allowed, which may have a considerable waiting time, i.e. delay
Taking into account the above waiting time, it is not possible to suspend communication for a specific time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fast channel switching scheme for IEEE 802.11 WLANs
  • Fast channel switching scheme for IEEE 802.11 WLANs
  • Fast channel switching scheme for IEEE 802.11 WLANs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular structures, interfaces, techniques, etc., in order to provide a thorough understanding of the present invention. For the purposes of conciseness and clarity, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0020] The present invention relates to a fast channel switching scheme for reducing channel switching latency to prevent interference with the operation of other co-located systems, such as mission-critical radar systems in the 5GHz frequency band. It will be apparent to those skilled in the art that the present invention can be easily extended to other frequency bands, such as 2.4 GHz, using different physical layer specifications, such as the IEEE 802.11b physical specification.

[0021] figure 1 It represents a schemati...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed is a method for switching at least one wireless node located within the coverage of a basic service set (BSS) or an basic basic service set (IBSS) from a first communication channel to a second communication channel in a wireless local area network (WLAN). methods and systems. In one embodiment, the method includes the following steps: determining whether a second communication channel to be used by at least one wireless node is required; when it is determined that the second communication channel is required, broadcasting a management frame by the source node to the at least one wireless node, the The management frame includes a channel switching time and a second communication channel identifier; and switching at least one wireless node that receives the management frame from the first communication channel to the second communication channel within a countdown time corresponding to the channel switching time, The channel switching time is less than the beacon interval. In an alternative embodiment, the method includes the steps of: determining whether a second communication channel to be used by at least one wireless node is required; and when it is determined that the second communication channel is required, broadcasting, by the source node, a first management frame to the at least one wireless node , the first management frame includes the channel switching time and the second communication channel identifier; and upon receiving the broadcast first management frame on the at least one wireless node, suspending all further frame exchanges in the first communication channel to mute the second communication channel. A communication channel.

Description

technical field [0001] The present invention relates to fast channel switching mechanisms in 802.11(h) wireless local area networks (WLANs), wherein channel switching is performed independently of the beacon interval period. Background technique [0002] The IEEE 802.11(h) standard specifies the characteristics of the medium access control (MAC) layer and the physical (PHY) layer of the wireless local area network, which is defined in the international standard ISO / IEC 8802-111 "Information Technology-Telecommunications and information exchange between systems-Local and metropolitana area networks-Specific Requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical (PHY) specifications (Information Technology - Telecommunications and Intersystem Information Exchange - Local and Metropolitan Area Networks - Specific Requirements, Part II: Wireless LAN Medium Access Control (MAC) and Physical (PHY) Specification" 1999 version. This standard provides a mechanis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04W48/12H04W72/54H04W84/12
CPCH04W48/12H04W84/12H04W72/54H04L12/28H04W36/06
Inventor A·索姆罗
Owner KONINK PHILIPS ELECTRONICS NV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com