Reverse link data rate control method in mobile communication system

• US 20050047344A1
• Filed: 08/31/2004
• Published: 03/03/2005
• Est. Priority Date: 09/01/2003
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seol, Jee Woong
• Granted Patent: US 7,486,620 B2
• Time in Patent Office: Days
• US Class Current: 370/235
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method of controlling a reverse link data rate, A method of controlling reverse link data rate in a mobile communication system supporting hybrid automatic retransmission request (HARQ) transmission is provided, by which a single grant message is transmitted via a forward grant channel to control a reverse link data rate of a plurality of subchannels of a reverse packet data channel. The method includes steps of generating rate control information for determining a data rate for transmission by a mobile station via a reverse traffic channel; and transmitting to the mobile station a message including the generated rate control information and subchannel information, the message corresponding to a series of subchannel transmissions to which the determined data rate will be applied.

Claims

1. A method of controlling reverse link data rate in a mobile communication system supporting hybrid automatic retransmission request (HARQ) transmission, the method comprising steps of:

generating rate control information for determining a data rate for transmission by a mobile station via a reverse traffic channel; and

transmitting to the mobile station a message including the generated rate control information and subchannel information, the message corresponding to a series of subchannel transmissions to which the determined data rate will be applied.

2. The method of claim 1, wherein the determined data rate is based on a current status of the mobile station and a transmission status of the reverse traffic channel.

3. The method of claim 1, wherein the subchannel information is a value indicating a number of subchannels to which the message is applicable.

4. The method of claim 3, wherein the subchannel information is a duration indicator having a predetermined bit length.

5. The method of claim 4, wherein the predetermined bit length is one.

6. The method of claim 4, wherein the predetermined bit length is two.

7. The method of claim 1, wherein the subchannel information comprises a predetermined number of bits of varying place value, each place value indicative of an applicability of the determined data rate to a subchannel corresponding to the place value.

8. The method of claim 7, wherein the predetermined number of bits is two.

9. The method of claim 7, wherein the predetermined number of bits is three.

10. The method of claim 1, wherein the message includes a flag indicating whether the mobile station is to follow the subchannel information.

11. The method of claim 1, wherein the reverse traffic channel is a reverse packet data channel.

12. The method of claim 1, wherein the message is transmitted via a forward grant channel.

13. The method of claim 12, wherein the message is a grant message.

14. The method of claim 1, wherein the rate control information is a maximum traffic-to-pilot power ratio.

15. A method of controlling reverse link data rate in a mobile communication system supporting hybrid automatic retransmission request (HARQ) transmission, the method comprising steps of:

receiving a message including rate control information for transmission on a reverse traffic channel and subchannel information, the message corresponding to a series of subchannel transmissions to which the determined data rate will be applied;

determining, based in the rate control information, a data rate for the reverse traffic channel; and

transmitting reverse link data at the determined data rate via one of the subchannels to which the determined data rate will be applied.

16. The method of claim 15, wherein the determined data rate is based on a current status of the mobile station.

17. The method of claim 15, wherein the subchannel information is a value indicating a number of subchannels to which the reverse link data rate is applied.

18. The method of claim 17, wherein the subchannel information is a duration indicator having a predetermined bit length.

19. The method of claim 18, wherein the predetermined bit length is one.

20. The method of claim 18, wherein the predetermined bit length is two.

21. The method of claim 15, wherein the subchannel information comprises a predetermined number of bits of varying place value, each place value indicative of an applicability of the determined data rate to a subchannel corresponding to the place value.

22. The method of claim 21, wherein the predetermined number of bits is two.

23. The method of claim 21, wherein the predetermined number of bits is three.

24. The method of claim 15, wherein the message includes a flag indicating whether the mobile station is to follow the subchannel information.

25. The method of claim 15, wherein the reverse traffic channel is a reverse packet data channel.

26. The method of claim 15, wherein the message is received via a forward grant channel.

27. The method of claim 26, wherein the message is a grant message.

28. The method of claim 15, wherein the rate control information is a maximum traffic-to-pilot power ratio.