Wireless services distribution system

• US 6,009,096 A
• Filed: 07/18/1996
• Issued: 12/28/1999
• Est. Priority Date: 12/30/1994
• Status: Expired due to Fees

• Current Assignee: AT&T Corporation (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Schroeder, Robert Edward, Jaisingh, Gopal K.
• Primary Examiner(s): Nguyen, Chau T.
• Application Number:
  US08/683,338
• Time in Patent Office: 1,258 Days
• Field of Search: 370/277, 370/395, 370/396, 370/397, 370/465, 370/466, 370/467, 370/474, 370/349, 370/401, 370/404, 370/338, 348/7, 348/12, 348/471, 348/466, 348/467, 455/4.2, 455/5.1, 455/3.1, 455/6.1, 455/6.3, 455/561, 455/562, 395/200.5
• US Class Current: 370/310.1
• CPC Class Codes: H04H 60/91 Mobile communication networks for accessing the Internet H04H60/85
• CPC Class Codes: H04L 2012/5607 Radio
• CPC Class Codes: H04L 2012/561 Star, e.g. cross-connect, concentrator, subscriber group equipment, remote electronics
• CPC Class Codes: H04L 2012/5614 User Network Interface
• CPC Class Codes: H04L 2012/5615 Network termination, e.g. NT1, NT2, PBX
• CPC Class Codes: H04L 2012/5616 Terminal equipment, e.g. codecs, synch.
• CPC Class Codes: H04L 2012/5672 Multiplexing, e.g. coding, scrambling
• CPC Class Codes: H04N 2007/145 Handheld terminals
• CPC Class Codes: H04N 21/4381 Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/6181 involving transmission via a mobile phone network arrangements for providing broadcast or conference services to substation in data switching networks in combination with wireless systems H04L12/189; wireless uplink channel access H04W74/004
• CPC Class Codes: H04N 21/64307 ATM
• CPC Class Codes: H04N 7/147 Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals selecting H04Q
• CPC Class Codes: H04N 7/17309 Transmission or handling of upstream communications
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections
• CPC Class Codes: H04W 84/14 WLL [Wireless Local Loop]; RLL [Radio Local Loop]
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A wireless base station having sectorized distribution and omni-distribution of services is combined with ATM processing. Both narrowband and broadband services can be provided to fixed and mobile wireless subscribers by a flexible intelligent ATM base station. Two way integrated voice, wireless data, wireless multimedia, and compressed video services to a wireless subscriber using different narrowband and wideband common air interfaces. Uplink service includes narrowband signaling and bearer information signaling. A wireless base station can transmit a variety of omnidirectional services to all subscribers within a service area and can transmit certain services to a sector of the service area, that is to particular subscribers.

Claims

1. In a multi-service distribution system using ATM format signaling including a plurality of subscribers and an ATM network, a base station comprising:

a sector processor for receiving RF signals from at least one subscriber in a predefined sector of a service area served by the base station and recovering user protocol data units from the RF signals, said RF signals carrying subscriber data in a format exclusive of ATM cells;

a sector multiplexer, connected to said sector processor for combining sectorized signals in the form of user protocol data units into a stream of user protocol data units;

an ATM adaptation processor, coupled to said sector processor, for converting the user protocol data units into an ATM cell payload;

a generator circuit, coupled to said ATM adaptation processor, for generating an ATM cell header and combining the ATM cell header with the ATM cell payload to form an ATM cell;

an ATM multiplexer, coupled to said generator circuit, for multiplexing the ATM cell with other ATM cells to form an ATM cell stream; and

a network interface, coupled to said ATM multiplexer, for transmitting the ATM cell stream to the network.

2. The base station according to claim 1, wherein the RF signals include audio signals.

3. The base station according to claim 2, wherein the RF signals include video signals.

4. The base station according to claim 1, wherein the RF signals include video signals.

5. In a multi-service distribution system using ATM format signaling including a plurality of subscribers and an ATM network, a base station comprising:

an ATM demultiplexer for demultiplexing ATM cell streams received from the network into a plurality of ATM cells;

an extractor circuit, coupled to said ATM demultiplexer, for extracting cell headers from ATM cells leaving ATM cell payloads;

an ATM adaptation processor, coupled to said extractor circuit, for converting the ATM cell payloads into user protocol data units; and

a transmission processor, coupled to said ATM adaptation processor, for transmitting user protocol data units as first RF signals to at least one subscriber, said transmission processor including,

a broadcast processor for transmitting user protocol data units as first RF signals to all subscribers within a service area of the base station; and

a sector processor for transmitting user protocol data units as first RF signals to at least one subscriber in a predefined sector of the service area of the base station.

6. The base station according to claim 5, wherein the first RF signals transmitted by said broadcast processor include video signals.

7. The base station according to claim 5, wherein the RF signals transmitted by said sector processor includes audio and video signals, and wherein said sector processor combines audio and video signals in the RF signals for multimedia services.

8. The base station according to claim 5 further comprising a demultiplexer, coupled between said adaptation processor and said transmission processor, for receiving a stream of user protocol data units from said adaptation processor, said demultiplexer including

a broadcast demultiplexer for demultiplexing a broadcast stream of the user protocol data units for broadcast transmission, and passing the demultiplexed broadcast user protocol data units to said broadcast processor, and

a sector demultiplexer for demultiplexer a sector stream of the user protocol data units for sectorized transmission, and passing the demultiplexed sectorized user protocol data units to said sector processor.

9. The base station according to claim 8, wherein said sector demultiplexer includes a plurality of sector multiplexers, at least one for each sector in the base station service area.

10. The base station according to claim 5, wherein said sector processor receives second RF signals from at least one subscriber in the predefined sector and recovers second user protocol data units from the second RF signals, and wherein said ATM adaptation processor obtains a second ATM cell payload from the second user protocol data units, said base station further comprising:

a generator circuit, coupled to said ATM adaptation processor, for generating a second ATM cell header and combining the second ATM cell header with the second ATM cell payload to form a second ATM cell;

an ATM multiplexer, coupled to said generator circuit, for multiplexing the second ATM cell with other ATM cells to form a second ATM cell stream; and

a network interface, coupled to said ATM multiplexer, for transmitting the second ATM cell stream to the network.

11. The base station according to claim 10, wherein the first and second RF signals include audio signals.

12. The base station according to claim 11, wherein the first RF signals include video signals.

13. The base station according to claim 10, further comprising a multiplexer demultiplexer, coupled between said adaptation processor and said transmission processor, including

a broadcast demultiplexer for demultiplexing a broadcast stream of the first user protocol data units for broadcast transmission, and passing the demultiplexed broadcast user protocol data units to said broadcast processor,

a sector demultiplexer for demultiplexing a sector stream of the first user protocol data units for sectorized transmission, and passing the demultiplexed sectorized user protocol data units to said sector processor, and

a sector multiplexer, connected between said sector processor and said adaptation processor, for combining sectorized signals in the form of the second user protocol data units into a stream of the second user protocol data units.

14. In a multi-service distribution system using ATM format signaling including a plurality of subscribers and an ATM network, a base station comprising:

a sector processor for receiving RF signals from at least one subscriber in a predefined sector of a service area served by the base station and recovering user protocol data units from the RF signals;

a sector multiplexer, connected to said sector processor for combining sectorized signals in the form of user protocol data units into a stream of user protocol data units;

an ATM adaptation processor, coupled to said sector multiplexer, for converting the user protocol data units into an ATM cell payload;

a generator circuit, coupled to said ATM adaptation processor, for generating an ATM cell header and combining the ATM cell header with the ATM cell payload to form an ATM cell;

an ATM multiplexer, coupled to said generator circuit, for multiplexing the ATM cell with other ATM cells to form an ATM cell stream; and

a network interface, coupled to said ATM multiplexer, for transmitting the ATM cell stream to the network.

15. The base station according to claim 14, wherein the RF signals include audio signals.

16. The base station according to claim 15, wherein the RF signals include video signals.

17. The base station according to claim 14, wherein the RF signals include video signals.