System and method of communication between multiple point-coordinated wireless networks

A network information and network technology, applied in the field of wireless personal area network and wireless local area network, can solve the problems that the wired backbone does not support the processing of multimedia speed or service quality requirements, and cannot guarantee the availability of the wired backbone.

CN100433673CInactive Publication Date: 2008-11-12FREESCALE SEMICON INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2008-11-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

A wireless scatternet is provided that has at least two networks, each including a controller and one or more devices. The controller of each network has a usable physical area that indicates the farthest distance to which the controller can successfully communicate. The controllers will pass network information to each other in various ways depending upon the extent of overlap between the networks. If two networks have visible overlap, the controllers will pass the network information directly. If they have hidden overlap, one controller will use a device in the other controller's network to pass the network information. If they have indirect overlap, one device from each network will together in a child network, and the controllers will pass the network information via the devices in this child network. The network information may be passed through beacons or a separate broadcast message.
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Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This text claims the earlier application of commonly-owned pending U.S. Provisional Patent Application Serial No. 60 / 333,524, entitled "Scatternet or Multi-Forward AD-HOC Networking Topologies," filed November 28, 2001 date is the priority date, the contents of which are incorporated herein by reference. Background of the invention

[0003] The present invention relates to wireless personal area network and wireless local area network. More specifically, the present invention relates to systems, methods, devices, and computer program products for facilitating communication between multiple overlapping or neighboring wireless personal area networks or wireless local area networks.

[0004] The Open Systems Interconnection (OSI) standard of the International Standards Organization (ISO) provides a seven-layer architecture between end users and physical devices through which different systems can communicate. Each layer is...

Examples

Embodiment Construction

[0062] Embodiments of the present invention provide a scatternet topology that allows wireless communication between different devices in the scatternet. In operation, the devices of the scatternet communicate traffic wirelessly among each other. By comparison, traditional networking schemes allow devices from two different networks to communicate only through wired connections (ie, bridging).

[0063]A scatternet is defined as a system of multiple wireless networks interconnected by one or more wireless links (called forwarding). The function of the networking system is to discover links between these different groups of mobile devices and to establish and update these paths, so that any user can communicate with any other as long as each device has a link to one of the networks forming the scatternet. User Communications. Such an autonomous system of a mobile device may work independently or may have a gateway interfaced with a fixed ie wired network.

[0064] Fig. 5 is a...