Central coordinator switching method and coordinator

Abstract

The invention provides a central coordinator switching method and a coordinator. The method comprises the following steps of: transmitting a switching request message to a second central coordinator by a first central coordinator; if a response message of the switching request is received from the second central coordinator, wherein the response message of the switching request comprises an accepting identifier, before switching from the first central coordinator switches to the second central coordinator, obtaining the hidden sites corresponding to the second central coordinator and the specified proxy coordinators corresponding to the hidden sites according to a topology table stored in the first central coordinator; transmitting network site information to the second central coordinator, so as to make the second central coordinator to update the TEI (Terminal Equipment Identifier) of the associated sites in the network managed by the second central coordinator according to the network site information, wherein the network site information includes the identifiers of the hidden sites and the identifiers of the specified proxy coordinators corresponding to the identifier of the hidden sites.

Description

Technical field [0001] The invention relates to communication technology, in particular to a central coordinator switching processing method and a coordinator. Background technique [0002] Power Line Communication (PLC) is to load high-frequency signals carrying information on the power line, and use the power line for data transmission. The home broadband PLC network is a centralized management network. Each logical network has a Central Coordinator (CCo). The CCo is not only a PLC device, but also responsible for the management of the entire network, such as: Network establishment, site access and authorization, bandwidth allocation and resource scheduling of the entire network, coordination with multiple adjacent networks and network power management, etc. In addition, in the home broadband PLC network, due to channel conditions or other factors, some stations may not be able to listen to messages such as beacons sent by CCo, that is, there are hidden stations (Hidden Statio...

AI Technical Summary

Problems solved by technology

[0004] 1. Some sites were originally not hidden sites, but may become hidden sites after the switching of the coordinator;

[0005] 2. Some sites were originally hidden sites, but after the switching of the coordinator, the new CCo can be directly detected and become non-hidden sites;

[0006] 3. Some hidden sites are still hidden sites relative to the new CCo

[0007] For case 1, the new CCo needs to know these hidden sites and assign PCo for these hidden sites; for case 2, it needs to cancel the proxy function of PCo designated for these hidden sites; Whether some PCo is suitable, if not, it is necessary to re-designate a suitable PCo. Therefore, after the switching of the coordinator, it is equivalent to rebuilding the network, which brings problems of large delay, increased overhead and occupation of network resources. ; In addition, it may also cause some stations to miss the information in the central beacon sent by the new CCo, so that they cannot obtain enough scheduling and allocation information of network resources, which affects the transmission of data services

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