Patent ID: 7656855
Filing Date: 2010-02-02
Classification: H04B,H04J,H04L,H04W

Abstract:
1. In a wireless local area network (LAN) comprising a plurality of access points interconnected with a hub through an Ethernet cable, each access point providing wireless communication services to one or more wireless client devices in its vicinity, an arrangement for providing synchronous communication between each access point comprising: a synchronization generator module located at the hub generating a direct sequence spread spectrum (DS-SS) synchronization signal from a combination of a baseband signal and a plurality of pseudo noise sequences including timing information for providing synchronization, the plurality including at least a first pseudo noise sequence defining a precision phase signal utilized as a pilot tone to maintain synchronization between the plurality of access points and a second pseudo noise sequence defining a time mark signal used as a superframe/beacon synchronization signal between the plurality of access points; and a Power over Ethernet (PoE) coupling arrangement disposed between the synchronization generator and the Ethernet cable for coupling the DS-SS synchronization signal onto the Ethernet cable and transmitting the DS-SS synchronization signal to the plurality of access points.