Reverse link enhancement for CDMA 2000 release D

• US 20040240424A1
• Filed: 03/05/2004
• Published: 12/02/2004
• Est. Priority Date: 03/06/2003
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Nortel Networks Limited (Nortel Networks Corporation)
• Inventors: Li, Jun, Vrzic, Sophie, Zhang, Hang, Fong, Mo-Han, Iraqi, Ali, Chheda, Ashvin H.
• Granted Patent: US 7,327,716 B2
• Time in Patent Office: Days
• US Class Current: 370/349
• CPC Class Codes: H04W 28/22 Negotiating communication rate

Abstract

A mobile station transmits sub-packets at a specified transmission rate or an autonomous transmission rate based on a PERSISTENCE bit. The mobile station increments, decrements, or does not change the transmission rate when the PERSISTENCE bit is a second logic state and a rate control bit (RCB) value is a first, a second, or a third value. Another embodiment of the present invention includes an ALL_ACID_IND bit that instructs the mobile station to adjust the specified transmission rate for either a single H-ARQ channel or for all H-ARQ channels. In an alternate embodiment, the mobile station uses the RCB in conjunction with a NAK to adjust a transmission-to-pilot ratio. After the NAK, the mobile station monitors the RCB value to increase the transmission rate, decrease the transmission rate, or not to change the transmission rate of subsequent sub-packets of the same data packet.

Claims

1. A method for setting a reverse link transmission rate for a mobile station (MS) in a data packet network, comprising:

receiving a transmission grant signal transmitted by a base station (BS) wherein the transmission grant signal includes a specified transmission rate;

receiving a PERSISTENCE bit;

transmitting sub-packets of a first data packet at the specified transmission rate as specified in a commanded traffic to pilot power ratio received from a base station until an acknowledge (ACK) is received from the BS; and

transmitting sub-packets of a second data packet at one of an incrementally adjusted transmission rate or an autonomous transmission rate based upon a logic state of the PERSISTENCE bit.

2. The method of claim 1 wherein the sub-packets of the second data packet are transmitted at one of the autonomous transmission rate or an adjusted rate based on the autonomous rate when the PERSISTENCE bit is set to a first logic state.

3. The method of claim 2 wherein the sub-packets of the second data packet are transmitted at the incrementally adjusted transmission rate when the PERSISTENCE bit is set to a second logic state.

4. The method of claim 3 wherein the incrementally adjusted transmission rate is adjusted based on a rate control bit (RCB) that is evaluated when the PERSISTENCE bit is set to the second logic state.

5. The method of claim 4 wherein the RCB having an RCB value that prompts the MS to increment the incrementally adjusted transmission rate.

6. The method of claim 5 wherein the RCB having an RCB value that prompts the MS to decrement the incrementally adjusted transmission rate.

7. The method of claim 6 wherein the RCB having an RCB value that prompts the MS not to adjust the incrementally adjusted transmission rate.

8. The method of claim 3 wherein the transmission grant signal further includes an ALL_ACID_IND bit.

9. The method of claim 8 wherein the MS incrementally adjusts only the current H-ARQ channel based on a first logic state of the ALL_ACID_IND bit and incrementally adjust all the H-ARQ channels based on a second logic state of the ALL_ACID_IND bit.

10. The method of claim 1 wherein the MS evaluates a rate control bit for transmission-to-pilot ratio adjustment when a negative acknowledge (NAK) is received from the BS for the sub-packet of the first data packet.

11. A method for setting a reverse link transmission rate for a mobile station (MS) in a packet data network, comprising:

receiving a transmission grant signal transmitted by a base station (BS) wherein the transmission grant signal includes a specified transmission rate;

receiving a PERSISTENCE bit and an ALL_ACID_IND bit;

transmitting sub-packets of a first data packet at the specified transmission rate as specified in a commanded traffic to pilot power ratio received from a base station until an acknowledge (ACK) is received from the BS; and

transmitting sub-packets of a second data packet at one of an incrementally adjusted transmission rate or a defined autonomous transmission rate based upon a logic state of the PERSISTENCE bit and a logic state of the ALL_ACID_IND bit.

12. The method of claim 11 wherein the sub-packets of one of the first data packet and of the second data packet are transmitted at one of the autonomous transmission rate or an adjusted rate based on the autonomous rate when the PERSISTENCE bit is set to a first logic state.

13. The method of claim 12 wherein the sub-packets of one of the first data packet and of the second data packet are transmitted at the incrementally adjusted transmission rate when the PERSISTENCE bit is in a second logic state.

14. The method of claim 13 wherein a value of a rate control bit (RCB) prompts the MS to one of incrementing the incrementally adjusted transmission rate, or decrementing the incrementally adjusted transmission rate, or not adjusting the incrementally adjusted transmission rate.

15. The method of claim 14 wherein the MS incrementally adjusts the incrementally adjusted transmission rate for only the current H-ARQ channel based on a first logic state of the ALL_ACID_IND bit and incrementally adjusts the incrementally adjusted transmission rate for all the H-ARQ channels based on a second logic state of the ALL_ACID_IND bit.

16. A method for controlling reverse link incremental power in a packet data network, comprising:

receiving a transmission grant signal transmitted by a base station (BS) wherein the transmission grant signal includes a transmission rate;

transmitting sub-packets of a data packet at the received transmission data rate until a forward link acknowledge (ACK) is received from the BS;

examining a rate control bit (RCB) when a negative acknowledge (NAK) is received for a sub-packet of the data packet;

adjusting a transmission-to-pilot ratio for sub-packets of the data packet based upon a value of the RCB; and

transmitting subsequent sub-packets of the data packet at the adjusted transmission-to-pilot ratio until the acknowledge (ACK) is received from the base station (BS).

17. The method of claim 16 wherein the transmission-to-pilot ratio is increased by a defined value when the RCB is a first value.

18. The method of claim 17 wherein the transmission-to-pilot ratio is not changed when the RCB is a second value.

19. The method of claim 18 wherein the transmission-to-pilot ratio is decreased by the defined value when the RCB is a third value.

20. A mobile station (MS) comprising:

transceiver circuitry for transmitting and receiving wireless communication signals in a data packet network;

transmission logic to prompt the MS to adjust reverse link transmissions; and

processor, including a memory, for processing data packets received from the transceiver circuitry wherein at least one data packet includes a transmission grant signal received from a base station (BS) wherein the transmission grant signal includes a transmission rate.

21. The MS of claim 20 wherein the transceiver circuitry transmits sub-packets of a first data packet at the received transmission rate until an acknowledge (ACK) is received from the BS.

22. The MS of claim 21 wherein the transmission logic examines a rate control bit (RCB) received from the BS when a negative acknowledge (NAK) is received for the transmitted sub-packet of the first data packet.

23. The MS of claim 22 wherein the transmission logic prompts the processor to adjust a transmission-to-pilot ratio for the sub-packets of the first data packet based upon a first value of the RCB.

24. The MS of claim 23 wherein the transceiver circuitry transmits subsequent sub-packets of the data packets at the adjusted transmission-to-pilot ratio until the ACK is received from the BS.

25. The MS of claim 21 wherein the transmission grant signal further includes a PERSISTENCE bit and wherein the transmission logic prompts the transceiver circuitry to transmit sub-packets of a second data packet at one of an autonomous transmission rate or an incrementally adjusted transmission rate based upon a logic state of the PERSISTENCE bit.

26. The MS of claim 25 wherein the transmission logic prompts the processor to adjust the incrementally adjusted transmission rate based upon a second logic state of the PERSISTENCE bit and based upon a value of a rate control bit (RCB).

27. The MS of claim 26 wherein a first value of the RCB prompts the transmission logic to increment the incrementally adjusted transmission rate.

28. The MS of claim 27 wherein a second value of the RCB prompts the transmission logic not to adjust the incrementally adjusted transmission rate.

29. The MS of claim 28 wherein a third value of the RCB prompts the transmission to decrement the incrementally adjusted transmission rate.

30. The MS of claim 22 wherein the transmission grant signal further includes a PERSISTENCE bit and an ALL_ACID_IND bit and wherein the transmission logic prompts the transceiver circuitry to transmit sub-packets of a second data packet at one of a defined autonomous transmission rate or an incrementally adjusted transmission rate based upon a logic state of the PERSISTENCE bit and a logic state of the ALL_ACID_IND bit.

31. The MS of claim 30 wherein the sub-packets of the second data packet are transmitted at the autonomous transmission rate when the PERSISTENCE bit is set to a first logic state.

32. The MS of claim 31 wherein the sub-packets of the second data packet are transmitted at the incrementally adjusted transmission rate when the PERSISTENCE bit is set to a second logic state and wherein the incrementally adjusted transmission rate is the specified transmission data rate adjusted by the transmission logic.

33. The MS of claim 32 wherein the RCB received from the BS has an RCB value that prompts the transmission logic to one of increment the incrementally adjusted transmission rate, to decrement the incrementally adjusted transmission rate, or to not adjust the incrementally adjusted transmission rate.

34. The MS of claim 33 wherein the transmission logic prompts the processor to only adjust the incrementally adjusted transmission rate for the current H-ARQ channel based on a first logic state of the ALL_ACID_IND bit and to adjust the incrementally adjusted transmission rate for all H-ARQ channels based on a second logic state of the ALL_ACID_IND bit.