Wireless communication system and subscriber unit that support selection of operation from multiple frequency bands and multiple protocols and method of operation therefor

• US 6,374,109 B1
• Filed: 07/31/2000
• Issued: 04/16/2002
• Est. Priority Date: 05/08/1997
• Status: Expired due to Term

• Current Assignee: Apple Inc.
• Original Assignee: Nortel Networks Limited (Nortel Networks Corporation)
• Inventors: Shaheen, Kamel M., Huang, Chenhong
• Primary Examiner(s): Trost, William
• Assistant Examiner(s): SOBUTKA, PHILIP
• Application Number:
  US09/629,788
• Time in Patent Office: 624 Days
• Field of Search: 455/552, 455/553, 455/434, 455/435, 455/450, 455/451, 455/452, 455/525, 455/575, 375/220, 370/343, 370/329, 370/330, 370/341, 370/347
• US Class Current: 455/434
• CPC Class Codes: H04B 7/2612 Arrangements for wireless medium access control, e.g. by allocating physical layer transmission capacity H04B7/2615 - H04B7/2643 take precedence; provision for broadband connection H04Q11/0478
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A wireless communication system facilitates wireless communication with a subscribing unit operating within a respective service area. At least one base station supports wireless communication within the service area in a plurality of frequency bands and according to a plurality of communication protocols. In a broadcast message, a transmitting base station indicates to the subscribing unit the plurality of frequency bands and the plurality of communication protocols available. The subscribing unit receives the broadcast message and communicates with the base station on one of the plurality of frequency bands according to one of the plurality of communication protocols. In another embodiment, the system includes a plurality of base stations providing overlying coverage within the service area. In such systems, multiple broadcast message may provide information regarding the overlying coverage provided. The broadcast message may also include channel information that indicates the available channels within the available frequency bands, preference information, traffic levels within the frequency bands, available bandwidth within the frequency bands and system operator information that may indicates to the subscribing unit operation on reserved portions of the frequency band is available. The broadcast message may also indicate traffic levels on overlying systems, the bandwidth provided and cost of service for the overlying systems. A subscribing unit operating within the service area receives the broadcast message, makes operational decisions, may elicit additional information, makes operational determinations and communicates on a selected frequency band according to a selected communication protocol.

Claims

1. A subscribing unit comprising:

a case;

an antenna coupled to the case;

a wireless interface disposed within the case and coupled to the antenna that facilitates communication with a base station to receive a broadcast message from the base station, the broadcast message indicating the base station'"'"'s supported operations in a plurality of frequency bands and according to a plurality of communication protocols;

wherein the wireless interface also facilitates transmission of a request to the base station based upon contents of the broadcast message, the request requesting additional information regarding one of the plurality of frequency bands or one of the plurality of communication protocols supported by the base station;

wherein the subscribing unit receives additional information regarding one of the plurality of frequency bands or one of the plurality of communication protocols supported by the base station;

wherein the subscribing unit selects a frequency band and a communication protocol from the plurality of frequency bands and the plurality of communication protocols; and

wherein the subscribing unit communicates with the base station in the selected frequency band and according to the selected communication protocol.

2. The subscribing unit of claim 1, wherein the additional information relates to a digital communication protocol.

3. The subscribing unit of claim 1, wherein:

the broadcast message further includes channel information, the channel information indicating available channels within the frequency bands; and

the selection unit selecting the at least one channel of the plurality of available channels.

4. The subscribing unit of claim 1, wherein the plurality of frequency bands include the 800 MHz frequency band and the 1900 MHz frequency band.

5. The subscribing unit of claim 1, wherein the plurality of communication protocols include an analog protocol and a code division multiple access protocol.

6. The subscribing unit of claim 5, wherein the plurality of communication protocols is selected from the group consisting of IS-91A, TIA/EIA 691, TIA/EIA 553A, IS-95B and later revision protocols.

7. The subscribing unit of claim 1, wherein the information request includes a request for information regarding code division multiple access operation in the 1900 MHz frequency band.

8. The subscribing unit of claim 1, wherein the additional information relates to high speed data operations.

9. A subscribing unit comprising:

a case;

an antenna coupled to the case;

a wireless interface disposed within the case and coupled to the antenna that facilitates communication with a base station to receive a broadcast message from the base station, the broadcast message including information to indicate the base station'"'"'s supported operations in a plurality of frequency bands and according to a plurality of communication protocols, wherein the plurality of communication protocols includes an analog communication protocol and a digital communication protocol;

wherein the wireless interface also facilitates transmission of a request to the base station based upon contents of the broadcast message, the request requesting additional information regarding the digital communication protocol;

wherein the subscribing unit receives additional information regarding the digital communication protocol;

wherein the subscribing unit selects a frequency band and a communication protocol from the plurality of frequency bands and the plurality of communication protocols; and

wherein the subscribing unit communicates with the base station in the selected frequency band and according to the selected communication protocol.

10. The subscribing unit of claim 9, wherein the additional information indicates channels available that support the digital communication protocol.

11. The subscribing unit of claim 9, wherein the additional information relates to high speed data operations.

12. The subscribing unit of claim 9, wherein:

the digital protocol comprises a CDMA communication protocol; and

the additional information indicates channels in which the CDMA communication protocol is supported.

13. The subscribing unit of claim 12, wherein the channels in which the CDMA communication protocol is supported reside in the 1900 MHz frequency band.

14. A subscribing unit comprising:

a case;

an antenna coupled to the case;

a wireless interface disposed within the case and coupled to the antenna that facilitates communication with a base station to receive a broadcast message from the base station, the broadcast message including information to indicate;

a channel to acquire in the 800 MHz frequency band;

whether CDMA operation is available in the 800 MHz frequency band; and

whether CDMA operation is available in the 1900 MHz frequency band;

wherein the wireless interface also facilitates transmission of a request to the base station based upon contents of the broadcast message, the request requesting additional information regarding CDMA operation in the 1900 MHz frequency band;

wherein the subscribing unit receives additional information regarding CDMA operation in the 1900 MHz frequency band;

wherein the subscribing unit determines a frequency band in which to operate and whether to operate according to the CDMA operations or analog operations; and

wherein the subscribing unit communicates with the base station in the selected frequency band and a selected one of CDMA operations or analog operations.

15. The subscribing unit of claim 14, wherein the additional information regarding CDMA operation in the 1900 MHz frequency band indicates whether CDMA operations are available in the 1900 MHz frequency band.

16. The subscribing unit of claim 14, wherein the additional information regarding CDMA operation in the 1900 MHz frequency band indicates channels available for CDMA operations in the 1900 MHz frequency band.

17. The subscribing unit of claim 14, wherein the additional information regarding CDMA operation in the 1900 MHz frequency band indicates availability of high speed data service.