Method and system for a data transmission in a communication system

• US 8,194,598 B2
• Filed: 08/29/2006
• Issued: 06/05/2012
• Est. Priority Date: 08/23/2002
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Attar, Rashid Ahmed, Bhushan, Naga
• Primary Examiner(s): PHUNKULH, BOB A
• Application Number:
  US11/512,881
• Publication Number:
  US 20060291389A1
• Time in Patent Office: 2,107 Days
• Field of Search: None
• US Class Current: 370/329
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel
• CPC Class Codes: H04W 52/26 using transmission rate or quality of service QoS [Quality of Service]
• CPC Class Codes: H04W 52/48 during retransmission after error or non-acknowledgment
• CPC Class Codes: H04W 74/0891 for synchronized access

Abstract

Methods and apparatus for a data transmission in a communication system are disclosed. Each of a subset of plural access terminals desiring to transmit user data in an interval transmits a request to transmit in the interval to an access network. The access network makes a decision to schedule at least one of the subset of the plural access terminals to transmit in the interval in accordance with the request. At least one access point of the access network transmits the decision to the plural access terminals.

Claims

1. A method, implemented in an apparatus, for scheduling data transmission, comprising:

determining an opportunity level for an interval in accordance with at least one of an instantaneous quality metric of a reverse link channel in the interval, an average quality metric of the reverse link channel, and an impatience function;

transmitting a request for transmission in the interval, the request comprising the opportunity level; and

receiving a scheduling decision for data transmission on the reverse link channel in response to the request.

2. The method of claim 1, further comprising transmitting the request in a connected state of an access terminal.

3. The method of claim 1, further comprising:

determining the opportunity level for a pre-determined interval; and

transmitting the opportunity level and an interval indicator.

4. The method of claim 1, wherein the impatience function is determined in accordance with at least one of a maximum acceptable transmission delay, a number of packets in a queue at an access terminal, and an average throughput of the reverse link.

5. The method of claim 1, further comprising:

transmitting data in accordance with the scheduling decision.

6. The method of claim 1, wherein the interval includes one or more predetermined intervals.

7. An apparatus adapted for scheduling data transmission, comprising:

means for determining an opportunity level for an interval in accordance with at least one of an instantaneous quality metric of a reverse link channel in the interval, an average quality metric of the reverse link channel, and an impatience function;

means for transmitting a request for transmission in the interval, the request comprising the opportunity level; and

means for receiving a scheduling decision for data transmission on the reverse link channel in response to the request.

8. The apparatus of claim 7, further comprising means for transmitting the request in a connected state of an access terminal.

9. The apparatus of claim 7, further comprising:

means for determining the opportunity level for a pre-determined interval; and

means for transmitting the opportunity level and an interval indicator.

10. The apparatus of claim 7, wherein the impatience function is determined in accordance with at least one of a maximum acceptable transmission delay, a number of packets in a queue at an access terminal, and an average throughput of the reverse link.

11. The apparatus of claim 7, further comprising:

means for transmitting data in accordance with the scheduling decision.

12. A method, implemented in an apparatus, for data transmission, comprising:

receiving at least one request for transmission in an interval, the request comprising an opportunity level indicative of at least one of an instantaneous quality metric of a reverse link channel in the interval, an average quality metric of the reverse link channel, and an impatience function; and

transmitting a scheduling decision for data transmission on the reverse link channel in response to the at least one request.

13. The method of claim 12, further comprising receiving at least one opportunity level and at least one interval indicator.

14. The method of claim 12, the method further comprising determining the scheduling decision in accordance with scheduling rules comprising:

giving a precedence to a request containing a highest opportunity level; and

giving a precedence to a request from an access terminal with a lower transmitted throughput when a plurality of the at least one request contain an identical opportunity level.

15. The method of claim 14, wherein the scheduling rules further comprise giving a precedence at random, if no precedence is established.

16. An apparatus adapted for scheduling data transmission, comprising:

means for receiving at least one request for transmission in an interval, the request comprising an opportunity level indicative of at least one of an instantaneous quality metric of a reverse link channel in the interval, an average quality metric of the reverse link channel, and an impatience function; and

means for transmitting a scheduling decision for data transmission on the reverse link channel in response to the at least one request.

17. The apparatus of claim 16, further comprising means for receiving at least one opportunity level and at least one interval indicator.

18. The apparatus of claim 16, further comprising means for determining the scheduling decision in accordance with scheduling rules comprising:

giving a precedence to a request containing a highest opportunity level; and

giving a precedence to a request from an access terminal with a lower transmitted throughput when a plurality of the at least one request containing an identical opportunity level.

19. The apparatus of claim 18, wherein the scheduling rules further comprise giving a precedence at random, if no precedence is established.

20. A non-transitory, computer-readable medium encoded thereon with instructions that when executed cause an apparatus to carry out a method for transmitting data, the method comprising:

determining an opportunity level for an interval in accordance with at least one of an instantaneous quality metric of a reverse link channel in the interval, an average quality metric of the reverse link channel, and an impatience function;

transmitting a request for transmission in the interval, the request comprising the opportunity level; and

receiving a scheduling decision for data transmission on the reverse link channel in response to the request.

21. The non-transitory, computer-readable medium of claim 20, wherein the method further comprises transmitting the request in a connected state of an access terminal.

22. The non-transitory, computer-readable medium of claim 20, wherein the method further comprises:

determining the opportunity level for a pre-determined interval; and

transmitting the opportunity level and an interval indicator.

23. The non-transitory, computer-readable medium of claim 20, wherein the impatience function is determined in accordance with at least one of a maximum acceptable transmission delay, a number of packets in a queue at an access terminal, and an average throughput of the reverse link.

24. The non-transitory, computer-readable medium of claim 20, wherein the method further comprises:

transmitting data in accordance with the scheduling decision.

25. A non-transitory, computer-readable medium encoded thereon with instructions that when executed cause an apparatus to carry out a method for scheduling data transmission, the method comprising:

receiving at least one request for transmission in an interval, the request comprising an opportunity level indicative of at least one of an instantaneous quality metric of a reverse link channel in the interval, an average quality metric of the reverse link channel, and an impatience function; and

transmitting a scheduling decision for data transmission on the reverse link channel in response to the at least one request.

26. The non-transitory, computer-readable medium of claim 25, wherein the method further comprises receiving at least one opportunity level and at least one interval indicator.

27. The non-transitory, computer-readable medium of claim 25, wherein the method further comprises determining the scheduling decision in accordance with scheduling rules comprising:

giving a precedence to a request containing a highest opportunity level; and

giving a precedence to a request from an access terminal with a lower transmitted throughput when a plurality of the at least one request contain an identical opportunity level.

28. The non-transitory, computer-readable medium of claim 27, wherein the scheduling rules further comprise scheduling the transmission at random, if no precedence is established.

29. A communication device comprising:

a controller; and

a transmitter coupled to the controller;

wherein the controller includes instructions comprising;

determine an opportunity level for an interval in accordance with at least one of an instantaneous quality metric of a reverse link channel in the interval, an average quality metric of the reverse link channel, and an impatience function;

transmit a request for transmission in the interval, the request comprising the opportunity level; and

receive a scheduling decision for data transmission on the reverse link channel in response to the request.

30. The communication device of claim 29, wherein the instructions further comprise transmit the request in a connected state of an access terminal.

31. The communication device of claim 29, wherein the instructions further comprise:

determine the opportunity level for a pre-determined interval; and

transmit the opportunity level and an interval indicator.

32. The communication device of claim 29, wherein the impatience function is determined in accordance with at least one of a maximum acceptable transmission delay, a number of packets in a queue at an access terminal, and an average throughput of the reverse link.

33. The communication device of claim 29, wherein the instructions further comprise transmit data in accordance with the scheduling decision.

34. An apparatus for scheduling data transmission, comprising:

a controller; and

a transmitter coupled to the controller;

wherein the controller includes instructions comprising;

receive at least one request for transmission in an interval, the request comprising an opportunity level indicative of at least one of an instantaneous quality metric of a reverse link channel in the interval, an average quality metric of the reverse link channel, and an impatience function; and

transmit a scheduling decision for data transmission on the reverse link channel in response to the at least one request.

35. The apparatus of claim 34, wherein the instructions further comprise receive at least one opportunity level and at least one interval indicator.

36. The apparatus of claim 34, wherein the instructions further comprise determining the scheduling decision in accordance with scheduling rules comprising:

giving a precedence to a request containing a highest opportunity level; and

giving a precedence to a request from an access terminal with a lower transmitted throughput when a plurality of the at least one request containing an identical opportunity level.

37. The apparatus of claim 36, wherein the scheduling rules further comprise giving a precedence at random, if no precedence is established.