Multiplexing on the reverse link feedbacks for multiple forward link frequencies

• US 8,983,480 B2
• Filed: 10/18/2010
• Issued: 03/17/2015
• Est. Priority Date: 04/08/2005
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Rezaiifar, Ramin, Agashe, Parag, Black, Peter J.
• Primary Examiner(s): LAMONT, BENJAMIN S
• Application Number:
  US12/906,378
• Publication Number:
  US 20110026497A1
• Time in Patent Office: 1,611 Days
• Field of Search: 455/522, 455/526, 455/515, 455/450, 455/445
• US Class Current: 455/450
• CPC Class Codes: G11B 5/40 Protective measures on heads, e.g. against excessive temperature G11B5/31 takes precedence; protection against wear G11B5/255 ; protective structure of the head: see under structures, e.g. G11B5/3106
• CPC Class Codes: G11B 5/8404 manufacturing base layers
• CPC Class Codes: H04J 13/0003 Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
• CPC Class Codes: H04W 72/0466 the resource being a scrambling code

Abstract

A method and apparatus for multiplexing reverse link feedback channels on a single reverse link frequency supporting multiple forward link frequencies for forward link channels is provided. The design includes assigning the reverse link frequency to a mobile station, assigning one or more of the forward link frequencies to the reverse link frequency, and code division multiplexing a plurality of the reverse link feedback channels on the reverse link frequency.

Claims

1. A method for wireless communication, comprising:

receiving a set of long code masks at a mobile station, wherein each long code mask in the set of long code masks includes a multiple bit feedback multiplexing index correlating one forward link channel on one forward link frequency with one reverse link frequency;

receiving a channel assignment message at the mobile station, the channel assignment message assigning a first reverse link frequency to the mobile station and specifying relationships between a plurality of forward link frequencies and at least one reverse link frequency;

assigning a first long code mask to a first frequency of a forward link channel according to a first multiple bit feedback multiplexing index and assigning a second long code mask to a second frequency of the forward link channel according to a second multiple bit feedback multiplexing index;

multiplexing the first frequency of the forward link channel to the first reverse link frequency using the first long code mask and the second frequency of the forward link channel to the first reverse link frequency using the second long code mask; and

turning off a second reverse link frequency that the mobile station is configured to employ for sending data.

2. The method according to claim 1, wherein said at least two channels comprise an acknowledge channel and a data rate control channel.

3. The method according to claim 1, wherein said at least two channels are code division multiplexed.

4. The method according to claim 1, wherein receiving the channel assignment message at the mobile station comprises receiving a traffic channel assignment (TCA) message transmitted from a base station.

5. The method according to claim 1, wherein turning off the second reverse link frequency comprises autonomously turning off said second reverse link frequency.

6. The method according to claim 3, wherein said long code mask for each of said reverse link feedback channels is identified by a two bit feedback multiplexing index.

7. The method according to claim 4, wherein the assigning multiple long code masks comprises associating multiple long code masks with said reverse link feedback channels, wherein said reverse link feedback channels are code division multiplexed.

8. The method according to claim 7, wherein said long code mask for each of said reverse link feedback channels is identified by a feedback multiplexing index of more than two bits.

9. The method according to claim 6, wherein said long code mask comprises an index field and an access terminal identifier field.

10. The method according to claim 8, wherein said long code mask comprises an index field and an access terminal identifier field.

11. The method according to claim 1, wherein the forward link channels are equal in number to the reverse link feedback channels.

12. The method according claim 1, wherein turning off said second reverse link frequency comprises turning off pilot and data signals on said second reverse link frequency.

13. A communication apparatus, comprising:

a transmitter;

a receiver operably connected to said transmitter;

a processor operably connected to said transmitter and said receiver; and

memory operably connected to said processor, wherein said communication apparatus is adapted to execute instructions stored in said memory comprising;

receiving a set of long code masks, wherein each long code mask in the set of long code masks includes a multiple bit feedback multiplexing index correlating one forward link channel on one forward link frequency with one reverse link frequency;

receiving a channel assignment message, the channel assignment message assigning a first reverse link frequency and specifying relationships between a plurality of forward link frequencies and at least one reverse link frequency;

assigning a first long code mask to a first frequency of a forward link channel according to a first multiple bit feedback multiplexing index and assigning a second long code mask to a second frequency of the forward link channel according to a second multiple bit feedback multiplexing index;

multiplexing the first frequency of the forward link channel to the first reverse link frequency using the first long code mask and the second frequency of the forward link channel to the first reverse link frequency using the second long code mask; and

turning off a second reverse link frequency that the communication apparatus is configured to employ for sending data.

14. The communication apparatus according to claim 13, wherein said at least two channels comprise an acknowledge channel and a data rate control channel.

15. The communication apparatus according to claim 13, wherein said at least two channels are code division multiplexed.

16. The communication apparatus according to claim 13, wherein receiving the channel assignment message comprises receiving a traffic channel assignment (TCA) message transmitted from a base station.

17. The communication apparatus according to claim 13, wherein turning off the second reverse link frequency comprises autonomously turning off said second reverse link frequency.

18. The communication apparatus according to claim 15, wherein said long code mask for each of said reverse link feedback channels is identified by a two bit feedback multiplexing index.

19. The communication apparatus according to claim 16, wherein the assigning multiple long code masks comprises associating multiple long code masks with said reverse link feedback channels, wherein said reverse link feedback channels are code division multiplexed.

20. The communication apparatus according to claim 19, wherein said long code mask for each of said reverse link feedback channels is identified by a feedback multiplexing index of more than two bits.

21. The communication apparatus according to claim 18, wherein said long code mask comprises an index field and an access terminal identifier field.

22. The communication apparatus according to claim 20, wherein said long code mask comprises an index field and an access terminal identifier field.

23. The communication apparatus according to claim 13, wherein the forward link channels are equal in number to the reverse link feedback channels.

24. The communication apparatus according to claim 13, wherein turning off said second reverse link frequency comprises turning off pilot and data signals on said second reverse link frequency.

25. A communication apparatus, comprising:

receiving means for receiving a set of long code masks, wherein each long code mask in the set of long code masks includes a multiple bit feedback multiplexing index correlating one forward link channel on one forward link frequency with one reverse link frequency and receiving a channel assignment message, the channel assignment message assigning a first reverse link frequency and specifying relationships between a plurality of forward link frequencies and at least one reverse link frequency;

processor assigning means for assigning a first long code mask to a first frequency of a forward link channel according to a first multiple bit feedback multiplexing index and assigning a second long code mask to a second frequency of the forward link channel according to a second multiple bit feedback multiplexing index;

processor multiplexing means for multiplexing the first frequency of the forward link channel to the first reverse link frequency using the first long code mask and the second frequency of the forward link channel to the first reverse link frequency using the second long code mask; and

processor switching means for turning off a second reverse link frequency that the communication apparatus is configured to employ for sending data.

26. The communication apparatus according to claim 25, wherein said at least two channels comprise an acknowledge channel and a data rate control channel.

27. The communication apparatus according to claim 25, wherein said at least two channels are code division multiplexed.

28. The communication apparatus according to claim 25, wherein the receiving means comprises means for receiving a traffic channel assignment (TCA) message transmitted from a base station.

29. The communication apparatus according to claim 25, wherein the processor switching means comprise processor controlling means for autonomously turning off said second reverse link frequency.

30. The communication apparatus according to claim 27, wherein said long code mask for each of said reverse link feedback channels is identified by a two bit feedback multiplexing index.

31. The communication apparatus according to claim 28, wherein the processor assigning means comprises means for associating multiple long code masks with said reverse link feedback channels, wherein said reverse link feedback channels are code division multiplexed.

32. The communication apparatus according to claim 31, wherein said long code mask for each of said reverse link feedback channels is identified by a feedback multiplexing index of more than two bits.

33. The communication apparatus according to claim 30, wherein said long code mask comprises an index field and an access terminal identifier field.

34. The communication apparatus according to claim 32, wherein said long code mask comprises an index field and an access terminal identifier field.

35. The communication apparatus according to claim 25, wherein the forward link channels are equal in number to the reverse link feedback channels.

36. The communication apparatus according to claim 25, wherein turning off said second reverse link frequency comprises turning off pilot and data signals on said second reverse link frequency.

37. A non-transitory computer-readable medium embodying a set of instructions executable by one or more processors, comprising:

code for receiving a set of long code masks, wherein each long code mask in the set of long code masks includes a multiple bit feedback multiplexing index correlating one forward link channel on one forward link frequency with one reverse link frequency;

code for receiving a channel assignment message, the channel assignment message including an index assigning a first reverse link frequency and specifying relationships between a plurality of forward link frequencies and at least one reverse link frequency;

code for assigning a first long code mask to a first frequency of the forward link channel according to a first multiple bit feedback multiplexing index and assigning a second long code mask to a second frequency of the forward link channel according to a second multiple bit feedback multiplexing index;

code for multiplexing the first frequency of a forward link channel to the first reverse link frequency using the first long code mask and the second frequency of the forward link channel to the first reverse link frequency using the second long code mask; and

code for turning off a second reverse link frequency that the mobile station is configured to employ for sending data.