Method of allocating transmission resources

• US 6,957,070 B2
• Filed: 02/13/2002
• Issued: 10/18/2005
• Est. Priority Date: 02/20/2001
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Voyer, Nicolas
• Primary Examiner(s): Feild, Joseph
• Assistant Examiner(s): Afshar, Kamran
• Application Number:
  US10/073,318
• Publication Number:
  US 20020119782A1
• Time in Patent Office: 1,343 Days
• Field of Search: 455450-453, 455/456.1, 455/455, 455516-517, 455/63.1, 455/67.11, 455/67.13, 455/552.1, 455/509, 455/562.1, 370/320, 370329-330, 370/335, 370/337, 370/341, 370/441
• US Class Current: 455/450
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04W 16/10 Dynamic resource partitioning
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

Allocation method for allocating transmission resources to a plurality of communications between a base station and a plurality of mobile terminals in which, for a communication with a given mobile terminal, a transmission resource allocation criterion is selected from amongst a plurality of predetermined criteria, the selection of the said criterion being made using a quantity characteristic of the propagation losses between the said mobile terminal and the base station.

Claims

1. Allocation method for allocating transmission resources to a plurality of communications between a base station and a plurality of mobile terminals, characterized in that, for a communication with a given mobile terminal, a resource allocation criterion is selected from amongst a plurality of predetermined allocation criteria consisting of extra-cellular interference and at least one of intra-cellular interference and allocation of time resources, the selection of said criterion being made using a quantity characteristic of the propagation losses between said mobile terminal and the base station.

2. Allocation method according to claim 1, characterized in that said characteristic quantity is a function of the distance between said mobile terminal and the base station.

3. Allocation method according to claim 1, characterized in that said characteristic quantity is a function of the coefficient of coupling between the antenna of said mobile terminal and the antenna of the base station.

4. Allocation method according to one of the preceding claims, characterized in that said resources comprise transmission codes and time slots, a set of codes being associated with each slot.

5. Allocation method according to claim 4, characterized in that said plurality of criteria comprises a first allocation criterion allocating to a new communication the transmission time slot having the lowest level of interference.

6. Allocation method according to claim 4, characterized in that said plurality of criteria comprises a second allocation criterion allocating to a new communication the transmission time slot having the lowest non-zero number of codes not yet allocated.

7. Allocation method according to claim 4, characterized in that said plurality of criteria comprises a third allocation criterion allocating to a new communication the transmission time slot having the largest number of codes not yet allocated.

8. Allocation method according to claim 5, characterized in that the first criterion is selected when the propagation losses are low and in that the second criterion is selected when the propagation losses are high.

9. Allocation method according to claim 5, characterized in that the first criterion is selected when the propagation losses are low and in that the third criterion is selected when the propagation losses are high.

10. Allocation method according to claim 6, characterized in that the first criterion is selected when the propagation losses are low and in that the second criterion is selected when the propagation losses are high.

11. Allocation method according to claim 7, characterized in that the first criterion is selected when the propagation losses are low and in that the third criterion is selected when the propagation losses are high.

12. Allocation method for allocating transmission resources to a plurality of communications between a base station and a plurality of mobile terminals, characterized in that, for a communication with a given mobile terminal, a resource allocation criterion is selected from amongst a plurality of predetermined allocation criteria, the selection of said criterion being made using a quantity characteristic of the propagation losses between said mobile terminal and the base station;

characterized in that said resources comprise transmission time slots; and

in that said plurality of criteria comprises an allocation criterion allocating to a new communication the transmission time slot having the lowest level of interference.

13. Allocation method according to claim 12, characterized in that said characteristic quantity is a function of the distance between said mobile terminal and the base station.

14. Allocation method according to claim 12, characterized in that said characteristic quantity is a function of the coefficient of coupling between the antenna of said mobile terminal and the antenna of the base station.

27. Allocation method according to claim 12, characterized in that said resources further comprise transmission codes, a set of codes being associated with each slot.

15. Allocation method for allocating transmission resources to a plurality of communications between a base station and a plurality of mobile terminals, characterized in that, for a communication with a given mobile terminal, a resource allocation criterion is selected from amongst a plurality of predetermined allocation criteria, the selection of said criterion being made using a quantity characteristic of the propagation losses between said mobile terminal and the base station;

characterized in that said resources comprise transmission time slots; and

in that said plurality of criteria comprises an allocation criterion allocating to a new communication the transmission time slot having the lowest non-zero number of codes not yet allocated.

16. Allocation method according to claim 15, characterized in that said characteristic quantity is a function of the distance between said mobile terminal and the base station.

17. Allocation method according to claim 15, characterized in that said characteristic quantity is a function of the coefficient of coupling between the antenna of said mobile terminal and the antenna of the base station.

28. Allocation method according to claim 15, characterized in that said resources further comprise transmission codes, a set of codes being associated with each slot.

18. Allocation method for allocating transmission resources to a plurality of communications between a base station and a plurality of mobile terminals, characterized in that, for a communication with a given mobile terminal, a resource allocation criterion is selected from amongst a plurality of predetermined allocation criteria, the selection of said criterion being made using a quantity characteristic of the propagation losses between said mobile terminal and the base station;

characterized in that said resources comprise transmission time slots; and

in that said plurality of criteria comprises an allocation criterion allocating to a new communication the transmission time slot having the largest number of codes not yet allocated.

19. Allocation method according to claim 18, characterized in that said characteristic quantity is a function of the distance between said mobile terminal and the base station.

20. Allocation method according to claim 18, characterized in that said characteristic quantity is a function of the coefficient of coupling between the antenna of said mobile terminal and the antenna of the base station.

29. Allocation method according to claim 18, characterized in that said resources further comprise transmission codes, a set of codes being associated with each slot.

21. An allocation method, comprising:

determining a first value which is a function of propagation loss between a mobile terminal and a base station;

comparing said value to a second value;

based on said comparing selecting first and second alternative allocation criteria;

when said first criterion is selected, selecting a time slot in a transmission frame based upon a level of interference; and

when said second criterion is selected, selecting a time slot in a transmission based upon availability of transmission codes.

22. A method according to claim 21, comprising:

when said first criterion is selected, selecting a time slot having a lowest level of interference.

23. A method according to claim 22, comprising:

when said second criterion is selected, selecting one of a time slot having a largest number of available transmission codes and a non-saturated time slot having a smallest number of available transmission codes.

24. A method according to claim 22, comprising:

when said first criterion is selected, determining interference levels at a plurality of time slots in a transmission frame.

25. A method according to claim 21, comprising:

when said second criterion is selected, selecting one of a time slot having a largest number of available transmission codes and a non-saturated time slot having a smallest number of available transmission codes.

26. A method according to claim 21, wherein said determining step comprises:

determining said first value as a function of distance between said mobile terminal and said base station and determining said first value as a function of coefficient coupling between an antenna of said mobile station and an antenna of said base station.