SYSTEM AND METHOD FOR RATE ASSIGNMENT

• US 20090097412A1
• Filed: 12/19/2008
• Published: 04/16/2009
• Est. Priority Date: 09/10/2002
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Chen, Tao, Jain, Avinash, Damnjanovic, Jelena
• Granted Patent: US 8,787,180 B2
• 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 requested rate, comprising:

determining a normalized average pilot transmit power; and

determining a maximum requested rate based on the normalized average pilot transmit power and a pilot reference value.

2. The method of claim 1, wherein the determining a normalized average pilot transmit power is based on an actual transmit pilot power after power constraints are applied.

3. The method of claim 2, wherein the determining a normalized average pilot transmit power allows for headroom.

4. 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.

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

means for determining a normalized average pilot transmit power;

means for determining a pilot reference level value; and

means for determining a maximum requested rate based on the normalized average pilot transmit power and the pilot reference value.

6. An apparatus for determining a maximum requested rate, comprising:

means for determining a normalized average pilot transmit power;

means for determining a pilot reference level value; and

means for determining a maximum requested rate based on the normalized average pilot transmit power and the pilot reference value.

7. 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.

8. A mobile station, 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

a normalized average pilot transmit power from the plurality of receive signals and

determines a maximum requested rate based on the normalized average pilot transmit power and a pilot reference value; and

a transmitter coupled to the controller, the transmitter conditions the maximum requested rate for transmission.

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

determining a normalized average pilot transmit power; and

determining a maximum requested rate based on the normalized average pilot transmit power and a pilot reference value.

11. 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.