Multi-channel communication system for wireless local loop communication

• US 6,952,585 B1
• Filed: 02/20/1998
• Issued: 10/04/2005
• Est. Priority Date: 11/19/1997
• Status: Expired due to Fees

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Shi, Hong
• Primary Examiner(s): Corsaro, Nick
• Application Number:
  US09/026,936
• Time in Patent Office: 2,783 Days
• Field of Search: 455/450, 455/451, 455/452, 455/453, 455/561, 455/562, 455/554, 455/555, 455/231, 455/272, 455/273, 455/423, 455/422, 455/130, 455/131, 455/132, 455/133, 370/328, 370/334, 370/336, 370/337
• US Class Current: 455/452.1
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 48/04 based on user or terminal location or mobility data, e.g. moving direction, speed
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 84/14 WLL [Wireless Local Loop]; RLL [Radio Local Loop]

Abstract

The present invention discloses novel methods of communication for wireless local loop communication systems. The method comprises the steps of providing a plurality of fixed access units in radio communication with an array of radio fixed parts; utilizing a plurality of radio channels divided into a predetermined number of synchronized time slots; conducting radio communication between an activated fixed access unit and an activated radio fixed part during a chosen time slot on an assigned radio channel; and denying radio communication on said assigned radio channel during said chosen time slot in a controlled number of radio fixed parts surrounding said activated radio fixed parts.

Claims

1. A method of conducting radio communication in a wireless local loop communication system including a plurality of fixed access units in radio communication with an array of radio fixed parts, comprising the steps of:

utilizing a plurality of radio channels divided into a predetermined number of synchronized time slots;

conducting radio communication between an activated fixed access unit and an activated radio fixed part during a chosen time slot on an assigned radio channel; and

denying radio communication on said assigned radio channel during said chosen time slot in a controlled number of radio fixed parts surrounding said activated radio fixed parts.

2. The method of claim 1 wherein said radio communication may comprise either radio transmission or radio reception.

3. The method of claim 1 wherein said controlled number of radio fixed parts surrounding said activated radio fixed parts comprises the adjacent radio fixed parts.

4. The method of claim 1 wherein said controlled number of radio fixed parts surrounding said activated radio fixed parts comprises the second adjacent radio fixed parts.

5. The method of claim 1 wherein said controlled number of radio fixed parts comprises radio fixed parts back to back with said activated radio fixed part.

6. The method of claim 1 further comprising the step of utilizing an upper frequency band to transmit from said array of radio fixed parts to said plurality of fixed access units.

7. The method of claim 1 further comprising the step of utilizing a lower frequency band to transmit from said plurality of fixed access units to said array of radio fixed parts.

8. A method of multi-channel planning for a wireless local loop communication system, comprising the steps of:

providing an array of radio fixed parts for conducting radio communication with a plurality of fixed access units;

supplying a plurality of indexed radio frequencies divided into a plurality of synchronized time slots;

utilizing an activated radio fixed part and an activated fixed access unit for radio communication in an assigned time slot on a selected indexed radio frequency; and

disallowing radio communication in said assigned time slot on said selected indexed radio frequency in the surrounding radio fixed parts.

9. The method of claim 8 wherein said radio communication comprises either radio transmission or radio reception.

10. The method of claim 8 wherein the surrounding radio fixed parts comprises the adjacent radio fixed parts.

11. The method of claim 8 wherein the surrounding radio fixed parts comprises the second adjacent radio fixed parts.

12. The method of claim 8 wherein the surrounding radio fixed parts comprises the radio fixed parts facing said activated radio fixed part back to back.

13. The method of claim 8 further comprising communicating between the wireless local loop system and a public switched telephone network via a radio access node control chamber connected with a public switched telephone network hub.

14. The method of claim 8 further comprising the step of utilizing an indexed upper frequency band to transmit signals from said array of radio fixed parts to said plurality of fixed access units.

15. The method of claim 8 further comprising the step of utilizing an indexed lower frequency band to transmit signals from said plurality of fixed access units to said array of radio fixed parts.

16. The method of claim 8 further comprising the step of utilizing one of said indexed radio frequencies to handle two-way communication between said activated fixed access unit and said activated radio fixed part.

17. A wireless local loop communication system, comprising:

a plurality of fixed access units in radio communication with an array of radio fixed parts;

a plurality of radio channels divided into a predetermined number of synchronized time slots;

a control unit connected with said array of radio fixed parts for denying radio communication on an assigned radio channel during a chosen time slot in a controlled number of radio fixed parts surrounding an activated radio fixed part.

18. The wireless local loop communication system of claim 17 wherein said radio communication comprises radio transmission and radio reception.

19. The wireless local loop communication system of claim 17 wherein said controlled number of radio fixed parts surrounding said activated radio fixed part comprises the adjacent radio fixed parts.

20. The wireless local loop communication system of claim 17 whrein said controlled number of radio fixed parts surrounding said activated radio fixed part comprises the second adjacent radio fixed parts.

21. The wireless local loop communication system of claim 17 wherein said controlled number of radio fixed parts surrounding said activated radio fixed part comprises the radio fixed part facing said activated radio fixed part back to back.

22. The wireless local loop communication system of claim 17 wherein said controlled number of radio fixed parts surrounding said activated radio fixed part comprises all the radio fixed parts except said activated radio fixed part.

23. The wireless local loop communication system of claim 17 wherein said control unit is connected with a public switched telephone network.