METHOD AND APPARATUS FOR FAST CLOSED-LOOP RATE ADAPTATION IN A HIGH RATE PACKET DATA TRANSMISSION

• US 20130315143A1
• Filed: 07/29/2013
• Published: 11/28/2013
• Est. Priority Date: 05/12/2000
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Esteves, Eduardo S., Attar, Rashid Ahmed Akbar, Bhushan, Naga
• Application Number:
  US13/953,070
• Publication Number:
  US 20130315143A1
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04W 16/02 Resource partitioning among network components, e.g. reuse partitioning
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters

Abstract

In a high data rate communication system capable of variable rate transmission, an open loop rate control can be adjusted with a closed loop rate control to maximize throughput. An access point generates interleaved multi-slot packets that allow an access terminal to transmit indicator messages to the access point in accordance with recently received data carried within slots of the multi-slot packets.

Claims

1. A method for wireless communication, comprising:

transmitting a first slot of a first multi-slot packet;

receiving an indicator message indicating a reception status of the first slot of the first multi-slot packet; and

cancelling transmission of remaining slots of the first multi-slot packet if the indicator message is an acknowledgment.

2. The method as in claim 1, if the indicator message is negative, the method further comprising:

transmitting a next slot of the first multi-slot packet;

receiving an indicator message indicating a reception status of the next slot of the first multi-slot packet; and

cancelling transmission of remaining slots of the first multi-slot packet if the indicator message is an acknowledgment.

3. The method as in claim 1, further comprising:

encoding the first multi-slot packet; and

partitioning the first multi-slot packet into multiple slots.

4. The method as in claim 1, wherein each slot of the first multi-slot packet is transmitted at a predetermined time slot.

5. The method as in claim 1, further comprising:

transmitting a first slot of a second multi-slot packet in a time slot allocated to one of the remaining slots of the first multi-slot packet.

6. The method as in claim 1, wherein the first multi-slot packet has a target packet error rate corresponding to a normal end of the first multi-slot packet, and wherein a packet error rate of the first multi-slot packet is different from target packet error rate.

7. The method as in claim 6, wherein the normal end of the first multi-slot packet corresponds to transmission of all slots of the multi-slot packet.

8. The method as in claim 1, wherein the first multi-slot packet has a target data rate corresponding to transmission of all slots of the first multi-slot packet, and wherein a data rate of the transmitted first multi-slot packet is greater than the target data rate.

9. The method as in claim 1, wherein the indicator message provides closed loop rate adaptation for multi-slot packet data rates.

10. The method as in claim 9, further comprising:

receiving a data rate indicator; and

determining a target data rate for the first multi-slot packet as a function of the data rate indicator.

11. The method as in claim 1, wherein each slot of the first multi-slot packet is transmitted at a predetermined time slot and wherein the predetermined data slots are interlaced with predetermined gap slots in an alternating pattern.

12. The method as in claim 1, further comprising:

transmitting all slots of the first multi-slot packets;

receiving an extend indicator; and

transmitting at least one of the slots of the first multi-slot packet in response to receiving the extended indicator.

13. The method as in claim 1, further comprising:

receiving, periodically, information indicative of a quality measure of the wireless channel,

wherein cancelling transmission of remaining slots of the first multi-slot packet if the decoding is successful further comprises receiving a closed loop rate control message.

14. A wireless apparatus, comprising:

means for transmitting a first slot of a first multi-slot packet;

means for receiving an indicator message indicating a reception status of the first slot of the first multi-slot packet; and

means for cancelling transmission of remaining slots of the first multi-slot packet if the indicator message is an acknowledgment.

15. The wireless apparatus as in claim 14, further comprising:

means for transmitting a next slot of the first multi-slot packet if the indicator message is negative;

means for receiving an indicator message indicating a reception status of the next slot of the first multi-slot packet; and

means for cancelling transmission of remaining slots of the first multi-slot packet if the indicator message is an acknowledgment.

16. The wireless apparatus as in claim 14, wherein the first multi-slot packet has a target packet error rate corresponding to a normal end of the first multi-slot packet, and wherein a packet error rate of the first multi-slot packet is different from the target packet error rate, and further comprising:

means for receiving a data rate indicator; and

means for determining a target data rate for the first multi-slot packet as a function of the data rate indicator.

17. A computer program product, comprising:

computer-readable medium; and

code for causing a computer to transmit a first slot of a first multi-slot packet;

code for causing a computer to receive an indicator message indicating a reception status of the first slot of the first multi-slot packet; and

code for causing a computer to cancel transmission of remaining slots of the first multi-slot packet if the indicator message is an acknowledgment.

18. The computer program product of claim 17, further comprising code for causing a computer to calculate a number of slots for transmission of a packet of data in a multi-slot packet.

19. The computer program product of claim 17, wherein the computer program product further comprises:

code for causing a computer to transmit a next slot of the first multi-slot packet if the indicator message is negative;

code for causing a computer to receive an indicator message indicating a reception status of the next slot of the first multi-slot packet; and

code for causing a computer to cancel transmission of remaining slots of the first multi-slot packet if the indicator message is an acknowledgment.

20. The computer program product of claim 17, wherein the computer program further comprises:

code for causing a computer to encode the first multi-slot packet; and

code for causing a computer to partition the first multi-slot packet into multiple slots.

21. A computer program which makes a computer execute:

a first procedure for transmitting a first slot of a first multi-slot packet;

a second procedure for receiving an indicator message indicating a reception status of the first slot of the first multi-slot packet; and

a third procedure for canceling transmission of remaining slots of the first multi-slot packet if the indicator message is an acknowledgment.