Single transceiver architecture for a wireless network

#The present invention relates generally to wireless networks, and more particularly to methods and apparatus for configuring, expanding and maintaining a wireless network for home or office use.

#In recent years, wireless networks have emerged as flexible and cost-effective alternatives to conventional wired local area networks (LANs). At the office and in the home, people are gravitating toward use of laptops and handheld devices that they can carry with them while they do their jobs or move from the living room to the bedroom. This has led industry manufacturers to view wireless technologies as an attractive alternative to Ethernet-type LANs for home and office consumer electronics devices, such as laptop computers, Digital Versatile Disk (“DVD”) players, television sets, and other media devices. Furthermore, because wireless networks obviate the need for physical wires, they can be installed relatively easily.

#Wireless communication systems adapted for use in homes and office buildings typically include an access point coupled to an interactive data network (e.g., Internet) through a high-speed connection, such as a digital subscriber line (DSL) or cable modem. The access point is usually configured to have sufficient signal strength to transmit data to and receive data from remote terminals or client devices located throughout the building. For example, a portable computer in a house may include a PCMCIA card with a wireless transceiver that allows it to receive and transmit data via the access point. Data exchanged between wireless client devices and access points is generally sent in packet format. Data packets may carry information such as source address, destination address, synchronization bits, data, error correcting codes, etc.

#The present invention will be understood more fully from the detailed description that follows and from the accompanying drawings, which however, should not be taken to limit the invention to the specific embodiments shown, but are for explanation and understanding only.

#FIG. 1 is a conceptual diagram of a wireless network according to one embodiment of the present invention.

#FIGS. 2A & 2B illustrate propagation characteristics for access points operating in the 2.4 GHz and 5 GHz frequency bands.

#The present invention is a wireless local area network (WLAN) that utilizes cellular techniques to extend the range of transmission without degrading bandwidth. The wireless network of the present invention is thus ideally suited for transmitting video programs (e.g., digitally-encoded video broadcast services, pay-per-view television, on-demand video services, etc.) throughout a house or other building, thereby creating a “media-live” environment.

#In the following description numerous specific details are set forth, such as frequencies, circuits, configurations, etc., in order to provide a thorough understanding of the present invention. However, persons having ordinary skill in the communication arts will appreciate that these specific details may not be needed to practice the present invention. It should also be understood that the basic architecture and concepts disclosed can be extended to a variety of different implementations and applications. Therefore, the following description should not be considered as limiting the scope of the invention.

#With reference to FIG. 1, a wireless home media network 10 according to one embodiment of the present invention comprises a source video access point 11 coupled to a broadband connection. By way of example, the broadband connection may provide video content from a Direct Broadcast Satellite (DBS) or digital cable service provider. Additional wireless access points (simply referred to as “access points” or “repeaters” in the context of the present application, unless specifically described otherwise) may be physically located in a distributed manner throughout the home or building to provide connectivity among a variety of home media devices configured for wireless communications. As shown in FIG. 1, these home media devices may include a laptop personal computer 12, DVD player 13, wireless-ready television 14, and wireless-linked receiver 15 coupled to either a standard definition or high-definition television (SDTV/HDTV) 16. Other types of devices, such as personal digital assistants (PDAs), may also be coupled to network 10 for receiving and/or transmitting data. Practitioners in the art will appreciate that many client media devices such as personal computers, televisions, PDAs, etc., have the capability of detecting the operating frequency of the access point within a particular micro-cellular transmission range.