SYSTEM AND METHOD FOR RATE ASSIGNMENT

• US 20140247738A1
• Filed: 05/09/2014
• Published: 09/04/2014
• Est. Priority Date: 09/10/2002
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Jain, Avinash, Damnjanovic, Jelena, Chen, Tao
• Application Number:
  US14/273,838
• Publication Number:
  US 20140247738A1
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 52/12 Outer and inner loops
• CPC Class Codes: H04W 52/26 using transmission rate or quality of service QoS [Quality of Service]
• CPC Class Codes: H04W 52/267 taking into account the information rate
• CPC Class Codes: H04W 52/34 TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
• CPC Class Codes: H04W 52/40 during macro-diversity or soft handoff
• CPC Class Codes: H04W 52/44 in connection with interruption of transmission
• CPC Class Codes: H04W 52/54 Signalisation aspects of the TPC commands, e.g. frame structure
• CPC Class Codes: H04W 52/60 using different transmission rates for TPC commands
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling

Abstract

A method and apparatus for determining the data rate of a reverse link communication. An embodiment includes transmitting at a null rate on the communication channel only when the station is not transmitting voice, signaling, or data. An embodiment includes determining a maximum requested rate based on the normalized average pilot transmit power and the pilot reference value, and determining the timing of the rate request. An embodiment involves determining a maximum transmission rate. An embodiment involves determining sufficient power and a power-control set point.

Claims

1. A method of determining a maximum transmission rate, comprising:

determining R_max(power), the maximum transmission rate reported in a rate request message;

determining a maximum supportable transmission rate based on a queue estimate; and

selecting the minimum of the R_max(power) and the maximum supportable transmission rate.

2. The method of claim 1, further comprising updating the queue estimate to a queue size reported in the rate request message.

3. The method of claim 2, further comprising:

decoding a fundamental channel frame and decoding a supplemental channel frame; and

updating the queue estimate based on data in the decoded fundamental channel frame and the decoded supplemental channel frame.

4. The method of claim 1, wherein determining the maximum supportable transmission rate comprises:

determining a buffer size estimate based on the queue estimate; and

determining a maximum transmission rate at which an amount of data transmitted in a frame is equal to or less than the buffer size estimate.

5. An apparatus for determining a maximum transmission rate, comprising:

means for determining R_max(power), the maximum transmission rate reported in a rate request message;

means for determining a maximum supportable transmission rate based on a queue estimate; and

means for selecting the minimum of the R_max(power) and the maximum supportable transmission rate.

6. The apparatus of claim 5, further comprising means for updating the queue estimate to a queue size reported in the rate request message.

7. The apparatus of claim 6, further comprising:

means for decoding a fundamental channel frame and decoding a supplemental channel frame; and

means for updating the queue estimate based on data in the decoded fundamental channel frame and the decoded supplemental channel frame.

8. The apparatus of claim 6, wherein the means for determining the maximum supportable transmission rate comprises:

means for determining a buffer size estimate based on the queue estimate; and

means for determining a maximum transmission rate at which an amount of data transmitted in a frame is equal to or less than the buffer size estimate.

9. A station for determining a maximum transmission rate, comprising:

an antenna for receiving and transmitting a plurality of signals;

a receiver coupled to the antenna, the receiver receives the plurality of receive signals;

a controller coupled to the receiver, the controller determines

R_max(power), the maximum transmission rate reported in a rate request message;

determines a maximum supportable transmission rate based on a queue estimate; and

selects the minimum of the R_max(power) and the maximum supportable transmission rate; and

a transmitter coupled to the controller, the transmitter conditions the minimum for transmission.

10. The station of claim 9, wherein the controller updates the queue estimate to a queue size reported in the rate request message.

11. The station of claim 10, wherein the controller

decodes a fundamental channel frame and decoding a supplemental channel frame;

and

updates the queue estimate based on data in the decoded fundamental channel frame and the decoded supplemental channel frame.

12. The station of claim 9, wherein the controller determines the maximum supportable transmission rate by:

determining a buffer size estimate based on the queue estimate; and

determining a maximum transmission rate at which an amount of data transmitted in a frame is equal to or less than the buffer size estimate.

13. A computer-readable medium embodying a program of instructions executable by a processor to perform a method of determining a maximum transmission rate, the method comprising:

determining R_max(power), the maximum transmission rate reported in a rate request message;

determining a maximum supportable transmission rate based on a queue estimate; and

selecting the minimum of the R_max(power) and the maximum supportable transmission rate.

14. The computer-readable medium of claim 13, wherein the method further comprises updating the queue estimate to a queue size reported in the rate request message.

15. The computer-readable medium of claim 14, wherein the method further comprises:

decoding a fundamental channel frame and decoding a supplemental channel frame; and

updating the queue estimate based on data in the decoded fundamental channel frame and the decoded supplemental channel frame.

16. The computer-readable medium of claim 13, wherein determining the maximum supportable transmission rate comprises:

determining a buffer size estimate based on the queue estimate; and

determining a maximum transmission rate at which an amount of data transmitted in a frame is equal to or less than the buffer size estimate.