WIRELESS CELLULAR COMMUNICATION SYSTEM

• US 20030125030A1
• Filed: 12/31/1998
• Published: 07/03/2003
• Est. Priority Date: 04/08/1991
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: DIXON, ROBERT C.
• Granted Patent: US 6,983,150 B2
• Time in Patent Office: Days
• US Class Current: 455/447
• CPC Class Codes: H04B 2201/70702 Intercell-related aspects
• CPC Class Codes: H04J 13/16 Code allocation
• CPC Class Codes: H04W 16/02 Resource partitioning among network components, e.g. reuse partitioning
• CPC Class Codes: H04W 16/12 Fixed resource partitioning

Abstract

A wireless communication system including a repeated pattern of cells, in which base station transmitters and user station transmitters for each cell may be assigned a spread spectrum code for modulating radio signal communication in that cell. Radio signals used in that cell are spread across a bandwidth sufficiently wide that both base station receivers and user station receivers in an adjacent cell may distinguish communication which originates in one cell from another. Adjacent cells may use distinguishable frequencies and distinguishable codes, but it is sufficient if adjacent cells use distinguishable frequencies and identical codes. A repeated pattern of cells allows the codes each to be reused in a plurality of cells.

Claims

1. A wireless communication system, comprising

repeated pattern of cells, each cell having a base station;

a user station;

wherein base station transmitters and user station transmitters in a cell are assigned a spread-spectrum code for modulating radio communication in that cell;

whereby radio signals used in that cell are spread across a bandwidth sufficiently wide that both base station receivers and user station receivers in an adjacent cell may distinguish communication which originates in one cell from another; and

whereby said codes are each reused in a plurality of cells.

2. A wireless communication system as in claim 1, wherein said repeated pattern comprises a three-dimensional configuration.

3. A wireless communication system as in claim 1, wherein said repeated pattern comprises the pattern shown in FIG. 1.

4. A wireless communication system as in claim 1, wherein said user station transmitters emit data communication messages which include station identification information.

5. A wireless communication system as in claim 1, wherein said codes are assigned dynamically for each cell.

6. A wireless communication system as in claim 1, wherein said codes are assigned dynamically for each cell by each of a plurality of independent communication systems, after accounting for use by other systems.

7. A wireless communication system as in claim 6, wherein said use is concurrent use.

8. A wireless communication system as in claim 6, wherein said use is prior use.

9. A wireless communication system as in claim 1, wherein said codes comprise a set of codes with minimal cross-correlation attribute.

10. A wireless communication system as in claim 1,

wherein said codes comprise a limited number of predetermined codes;

and

wherein said cells are arranged in a repeated pattern of three cells.

11. A wireless communication system as in claim 10, wherein said limited number is three.

12. A wireless communication system as in claim 10, further comprising time division and frequency division.,

13. A wireless communication system as in claim 12, wherein a plurality of frequencies are assigned dynamically.

14. A wireless communication system as in claim 12, wherein a plurality of frequencies are assigned dynamically by each of a plurality of independent communication systems, after accounting for use by other systems.

15. A wireless communication system as in claim 14, wherein said use is concurrent use.

16. A wireless communication system as in claim 14, wherein said use is prior use.