Mobile units within an area are located using a wireless local area network. Reference signal transmitters are provided at selected fixed locations within the area. Reference signals are transmitted using the reference signal transmitters using a first selected channel of the wireless local area network. A computer is provided having a database relating signal characteristics of signals transmitted by the reference signal transmitters to location within the area At least one access point is coup...

An iterative decoder for use in a WLAN includes an inner decoder/detector, a first subtraction module, a deinterleaving module, an outer decoder, a second subtraction module, an interleaving module, and a determining module. The inner decoder/detector determines inner coded bits and extrinsic information of the inner coded bits from symbol vector based on a channel matrix and inner extrinsic information feedback. The first subtraction module subtracts the inner extrinsic information feedback fro...

The present invention provides a system for controlling isochronous data admission, within a WLAN system (102) that transports both isochronous and asynchronous data. The system includes an apparatus (300), functioning as an access point within a WLAN system. The apparatus comprises a memory (306) and a transceiver (312) communicatively coupled to the memory. The apparatus further comprises an access coordinator (302), communicatively coupled to the memory, and adapted to: evaluate actual access...

A handover method in a wireless local area network (WLAN) environment, a mobile node device that carries out a handover in a WLAN environment, and a beacon signal structure are provided. The handover method involves receiving a beacon signal containing access router identification information; and carrying out a handover based on the access router identification information contained in the beacon signal. The mobile node device includes a beacon signal reception unit for receiving a beacon signa...

A single chip radio transceiver includes circuitry that enables detection of radar signals to enable the radio transceiver to halt communications in overlapping communication bands to avoid interference with the radar transmitting the radar pulses. One design goal, however, is to avoid false triggers that result from spurious tones and omissions and that further detects radar signals even in circumstances in which a radar pulse has been masked or eliminated by interference. Accordingly, the rada...

The invention relates to a method for transmitting data in a WLAN network (WLAN=Wireless Local Area Network) during which WLAN messages are transmitted in the L2 protocol layer between a terminal and an access node of the WLAN network, whereby the access node can be connected to one or more data networks. According to the invention, the WLAN messages contain SIP messages with SIP authentication data (SIP=Session Initiation Protocol). The SIP authentication data is extracted from WLAN messages ar...

A method for communication includes initiating a call between a mobile station in a cellular communication network and a subscriber unit that is accessible via the cellular communication network. A first connection to serve the call is opened between a base station in the cellular communication network and the mobile station. A second connection to serve the call is opened between the mobile station and an access point in a wireless local area network (WLAN). While the first connection is open, ...

In a wireless local area network, a method and apparatus for providing a multicast address data packet from a single access point to one or more mobile units coupled to the access point is disclosed. A data frame packet is formed containing two or more data packets, each packet targeted for different mobile units having unique unicast addresses. The data frame is transmitted to the mobile units and each of the mobile units derives the proper data intended for it from the data packets, by examini...

In triggering a handoff by a wireless transmit/receive unit (WTRU) from a current basic service set (BSS) in a wireless local area network (WLAN), the following are performed. A highest class of traffic service and quality of service (QoS) is determined for the highest class from a basic service set (BSS) beacon. Handoff is terminated and communication is retained with a current BSS when the signal to noise ratio (SNR) or received signal strength (RSS) is greater than a high threshold of the hig...

A WLAN (Wireless Local Area Network) receiver having a synchronization unit is provided. The synchronization unit comprises a first functional unit for performing a first signal processing function, a second functional unit for performing a second signal processing function different from the first signal processing function, and at least one signal processing circuit. In the synchronization unit the first functional unit is operating at least one of the signal processing circuits for performing...