Wireless base station architecture

• US 5,574,966 A
• Filed: 12/30/1994
• Issued: 11/12/1996
• Est. Priority Date: 12/30/1994
• Status: Expired due to Term

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Barzegar, Farhad, Schroeder, Robert E.
• Primary Examiner(s): Peng, John K.
• Assistant Examiner(s): HSIA, SHERRIE Y
• Application Number:
  US08/367,402
• Time in Patent Office: 683 Days
• Field of Search: 455/3.2, 455/4.1, 455/6.1, 455/6.3, 455/33.1, 455/33.3, 348/723, 348/725, 348/13, 370/112, 370/77, 379/56, 379/58, 379/59
• US Class Current: 725/62
• CPC Class Codes: H04H 20/38 Arrangements for distribution where lower stations, e.g. receivers, interact with the broadcast
• CPC Class Codes: H04H 20/42 Arrangements for resource management
• CPC Class Codes: H04H 20/46 specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
• CPC Class Codes: H04H 20/72 of terrestrial networks
• CPC Class Codes: H04N 2007/145 Handheld terminals
• CPC Class Codes: H04N 21/6112 involving terrestrial transmission, e.g. DVB-T
• CPC Class Codes: H04N 21/64784 Data processing by the network data processing in packet switching systems H04L12/56; flow control in packet networks H04L47/10; intermediate storage or scheduling H04L49/90; provisioning of proxy services in data packet switching networks H04L67/56

Abstract

A wireless base station architecture that is particularly well-suited for providing audio, video and data services. An exemplary embodiment preferably transmits to all of an area those "common services" (e.g., broadcast television) that are intended to be received by multiple recipients throughout the area, but, in contrast, transmits only into a sector those recipient-specific services (e.g., point-to-point voice services, interactive video services) that are intended for less than all of the recipients in the area. In an exemplary embodiment, a demultiplexor directs both broadcast video and recipient-specific or "sectorized" video signals to a video processor, which prepares them for transmission. The demultiplexor also directs sectorized audio signals to an audio processor/RF combiner, which prepares them for transmission. The video processor preferably directs the broadcast video signals to an antenna, which radiates the signal throughout the area, but directs the sectorized video signals to the audio processor/RF combiner. The audio processor/RF combiner combines the sectorized audio signals and the sectorized video signals before transmitting them to an antenna, which radiates the combined signal throughout the sector.

Claims

1. A wireless base station comprising:

a demultiplexor for receiving at least one common service video signal, which is intended to be broadcast to an area, at least one sectorized service video signal, which is intended to be broadcast to a sector, and at least one sectorized service audio signal, which is intended to be broadcast to said sector, and for directing said common service video signal and said sectorized service video signal to a video processor, and for directing said sectorized service audio signal to an audio processor/RF combiner;

said video processor for preparing said common service video signal and said sectorized service video signal for broadcast, for directing said common service video signal to a first antenna, which radiates said common service video signal to said area, and for directing said sectorized service video signal to said audio processor/RF combinet; and

said audio processor/RF combiner for preparing said sectorized service audio signal for broadcast, for combining said sectorized service audio signal and said sectorized service video signal to form a combined signal, and for directing said combined signal to a second antenna, which radiates said combined signal to said sector.

2. The wireless base station of claim 1 wherein said base station is designed to provide service to three sectors.

3. The wireless base station of claim 1 wherein said video processor comprises:

a broadcast video subprocessor; and

at least three sectorized video subprocessors.

4. The wireless base station of claim 3 wherein said broadcast video subprocessor comprises at least two amplifiers and a combiner.

5. The wireless base station of claim 3 wherein each of said sectorized video subprocessors comprises at least two amplifiers and a combiner.

6. The wireless base station of claim 1 wherein said audio processor/RF combiner comprises at least two amplifiers and a combiner.