DISTRIBUTION OF DOWNLINK E-DCH POWER USAGE

• US 20110038342A1
• Filed: 04/29/2008
• Published: 02/17/2011
• Est. Priority Date: 04/29/2008
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Wallerius, Roger, Andersson, Andreas, Ankel, Par, Lindskog, Jan, Ranheim, Anders
• Application Number:
  US12/990,045
• Publication Number:
  US 20110038342A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel
• CPC Class Codes: H04W 52/286 during data packet transmission, e.g. high speed packet access [HSPA]
• CPC Class Codes: H04W 52/346 distributing total power among users or channels

Abstract

The present invention relates to a method, a communication system and a Node-B (NB) in a communication system for distribution of downlink E-DCH power usage in a communication system. The system comprises at least one Node-B (NB) for enabling wireless communication with at least one user terminal (UE). The communication is enabled via an enhanced dedicated transport channel (E-DCH) and one high speed downlink shared channel (HS-DSCH) for uplink (UL) and downlink (DL) data traffic between the user terminal (UE) and the Node-B (NB). The Node-B (NB) comprises a HSDPA scheduler (HS-S) for scheduling the data rate for the DL data traffic via the HS-DSCH. It further comprises an EUL scheduler (EUL-S) for scheduling the maximum data rate for the UL data traffic via the E-DCH. The method is particularly characterized in that the Node-B (NB) estimates 111 the power consumption and/or the corresponding transmision time for at least one forthcoming E-DCH DL transmission on at least one E-DCH physical channel. The Node-B (NB) sends 112 the estimated power consumption and/or the corresponding transmission time information to the HSDPA scheduler (HS-S) prior to the E-DCH DL transmission.

Claims

1. Method for distribution of downlink E-DCH power usage in a communication system comprising at least one Node-B (NB) (11) enabling wireless communication with at least one user terminal (UE) (15),

the communication being enabled via an enhanced dedicated transport channel (E-DCH) and one high speed downlink shared channel (HS-DSCH) for uplink (UL) and downlink (DL) data traffic between the user terminal (UE) (15) and the Node-B (NB) (11),

the Node-B (NB) (11) comprising a HSDPA scheduler (HS-S) for scheduling the data rate for the DL data traffic via the HS-DSCH and an EUL scheduler (EUL-S) for scheduling the maximum data rate for the UL data traffic via the E-DCH,

characterized in that

the Node-B (NB) (11) estimating (403,404,603,604,608,809,906,106,111) the power consumption and/or the corresponding transmission time for at least one forthcoming E-DCH DL transmission on at least one E-DCH physical channel,

the Node-B (NB) (11) sending (403,405,603,609,811,908,108,112) the estimated power consumption and/or the corresponding transmission time information to the HSDPA scheduler (HS-S) prior to the E-DCH DL transmission.

2. Method according to claim 1 wherein the EUL scheduler (EUL-S) sends the estimated power consumption and/or the corresponding transmission time information.

3. Method according to any of the preceding claims wherein an entity located outside the EUL scheduler (EUL-S) within the Node-B (NB) (11) sends the estimated power consumption and/or the corresponding transmission time information.

4. Method according to any of the preceding claims wherein the EUL scheduler (EUL-S) estimates the power consumption and/or the corresponding transmission time.

5. Method according to any of the preceding claims wherein an entity located outside the EUL scheduler (EUL-S) within the Node-B (NB) (11) estimates the power consumption and/or the corresponding transmission time.

6. Method according to any of the preceding claims wherein the Node-B (NB) (11) estimates the power consumption and/or the corresponding transmission time for more than one E-DCH DL transmission.

7. Method according to any of the preceding claims wherein the Node-B (NB) (11) estimates (403,603) the power consumption and/or the corresponding transmission time on the Enhanced Absolute Grant Channel (E-AGCH) and/or the Enhanced Relative Grant Channel (E-RGCH) by collecting the power consumption and/or the corresponding transmission time as soon as the EUL scheduler (EUL-S) has taken a scheduling decision.

8. Method according to any of the preceding claims wherein the Node-B (NB) (11) estimates (404,604) the power consumption on the E-DCH Hybrid Automatic Repeat Request (HARQ) Acknowledgement Indicator Channel (E-HICH) by calculating a first average value for the power consumption.

9. Method according to claim 8 wherein the Node-B (NB) (11) calculates (404) the first average value using stored E-HICH power consumption values and the corresponding transmission time information for the E-DCH DL transmission of E-HICH.

10. Method according to claim 9 wherein the Node-B (NB) (11) stores (303) the E-HICH power consumption value and the corresponding transmission time information for the E-DCH DL transmission when detecting that an E-DCH DL transmission is made on the E-HICH channel.

11. Method according to any of the claims 9-10 wherein when the first average value for the power consumption for E-HICH has been calculated, the Node-B (NB) (11) estimates (608) the power consumption by performing the following steps:

calculating (605) a second average value for the quotient between an E-HICH Negative ACK (NACK) and Acknowledgement (ACK) for a first time period,

calculating (606) a third average value for the quotient between a E-HICH Negative ACK (NACK) and Acknowledgement (ACK) for a second time period being smaller than the first time period,

biasing or compensating (607) the first average value for the power consumption for the E-HICH using the quotient between the second average value and the third average value for the quotient between an E-HICH Negative ACK (NACK) and Acknowledgement (ACK.

12. Method according to claim 11 wherein the Node-B (NB) (11) calculates (604) the first average value using stored E-HICH ACK and NACK power consumption transmit attempt values and corresponding transmission time information for the E-DCH DL transmission.

13. Method according to claim 12 wherein the Node-B (NB) (11) stores (504,505) the E-HICH either ACK or NACK power consumption value and corresponding transmission time information for the E-DCH DL transmission when detecting that a E-DCH DL transmission is made on the E-HICH channel.

14. Method according to any of the claims 8-13 wherein the Node-B (NB) (11) sends (405,609) the estimated power consumption by sending the first average value or biased first average value for the power consumption for the E-HICH to the HSDPA scheduler (HS-S).

15. Method according to any of the claims 1-7 wherein the Node-B (NB) (11) estimates (809,906,106) the power consumption and/or the corresponding transmission time on the E-DCH Hybrid Automatic Repeat Request (HARQ) Acknowledgement Indicator Channel (E-HICH) by performing the following steps:

awaiting the reception (802,902,102) of the Enhanced Downlink Physical Control Channel (E-DPCCH),

storing (805,904,104) a determined transmission time for a E-DCH DL transmission on an E-DCH Hybrid Automatic Repeat Request (HARQ) Acknowledgement Indicator Channel (E-HICH),

determining (810,907,107) the deadline where the HSDPA scheduler (HS-S) must collect the estimated power consumption and/or the corresponding transmission time for E-HICH in order to schedule the data rate for the DL data traffic via the HS-DSCH.

16. Method according to claim 15 wherein the Node-B (NB) (11) decodes (803,903) the content of E-DPCCH before storing (805,904) the determined transmission time.

17. Method according to any of the claims 15-16 wherein the Node-B (NB) (11) decodes (804) the content of a received Enhanced Downlink Physical Dedicated Channel (E-DPDCH) before storing (805) the determined transmission time.

18. Method according to claim 15 wherein the Node-B (NB) (11) detects (103) a Discontinuous Transmission (DTX) before storing (104) the determined transmission time.

19. Method according to any of the claims 15-18 wherein the Node-B (NB) (11) performs the following steps after storing the determined transmission time:

awaiting (806) information if an Acknowledgement (ACK) or a Negative ACK (NACK) is about to be transmitted in the E-DCH DL transmission on the E-HICH,

determining (806) whether it as an ACK or NACK that will be transmitted,

fetching (807,808) the latest available estimated power consumption for the ACK and NACK that will be transmitted.

20. Method according to any of the claims 15-18 wherein the Node-B (NB) (11) performs the following step after storing the determined transmission time:

fetching (905,105) the combined value of the latest available power consumption for the ACK or NACK that will be transmitted in the E-DCH DL transmission on the E-HICH.

21. Method according to any of the claims 15-20 wherein the Node-B (NB) (11) sends (811,908,108) the estimated power consumption and/or the corresponding transmission time information for all E-HICH contributors to the HSDPA scheduler (HS-S).

22. Method according to any of the claims 7-21 wherein the Node-B (NB) (11) estimates the power consumption and/or the corresponding transmission time per UE (15).

23. Method according to any of the preceding claims wherein the HSDPA scheduler (HS-S) uses the estimated power consumption and/or the corresponding transmission time when scheduling the data rate for the DL data traffic via the HS-DSCH.

24. Method according to any of the claims 1-14 wherein the estimation (403,404,604,608) of the power consumption and/or the corresponding transmission time is preceded by the awaiting (402,602) of the completed E-DCH scheduling.

25. Node-B (NB) (11) for distribution of downlink E-DCH power usage, the Node-B being located in a communication system for enabling wireless communication with at least one user terminal (UE) (15),

the communication being enabled via an enhanced dedicated transport channel (E-DCH) and one high speed downlink shared channel (HS-DSCH) for uplink (UL) and downlink (DL) data traffic between the user terminal (UE) (15) and the Node-B (NB) (11),

the Node-B (NB) (11) comprising a HSDPA scheduler (HS-S) for scheduling the data rate for the DL data traffic via the HS-DSCH and an EUL scheduler (EUL-S) for scheduling the maximum data rate for the UL data traffic via the E-DCH,

characterized in that

the Node-B (NB) (11) comprises a mechanism for estimating (403,404,603,604,608,809,906,106,111) the power consumption and/or the corresponding transmission time for at least one forthcoming E-DCH DL transmission on at least one E-DCH physical channel,

the Node-B (NB) (11) further comprises a mechanism for sending (403,405,603,609,811,908,108,112) the estimated power consumption and/or the corresponding transmission time information to the HSDPA scheduler (HS-S) prior to the E-DCH DL transmission.

26. Node-B (NB) (11) according to claim 25 wherein the EUL scheduler (EUL-S) comprises a mechanism for sending the power consumption and/or the corresponding transmission time.

27. Node-B (NB) (11) according to any of the claims 25-26 wherein an entity located outside the EUL scheduler (EUL-S) within the Node-B (NB) (11) comprises a mechanism for sending the estimated power consumption and/or the corresponding transmission time information from.

28. Node-B (NB) (11) according to any of the claims 25-27 wherein the EUL scheduler (EUL-S) comprises a mechanism for estimating the power consumption and/or the corresponding transmission time.

29. Node-B (NB) (11) according to any of the claims 25-28 wherein an entity located outside the EUL scheduler (EUL-S) within the Node-B (NB) (11) comprises a mechanism for estimating the power consumption and/or the corresponding transmission time.

30. Node-B (NB) (11) according to any of the claims 25-29 wherein the Node-B (NB) (11) comprises a mechanism for estimating the power consumption and/or the corresponding transmission time for more than one E-DCH DL transmission.

31. Node-B (NB) (11) according to any of the claims 25-30 wherein the Node-B (NB) (11) comprises a mechanism for estimating (403,603) the power consumption and/or the corresponding transmission time on the Enhanced Absolute Grant Channel (E-AGCH) and/or the Enhanced Relative Grant Channel (E-RGCH) by collecting the power consumption and/or the corresponding transmission time as soon as the EUL scheduler (EUL-S) has taken a scheduling decision.

32. Node-B (NB) (11) according to any of the claims 25-31 wherein the Node-B (NB) (11) comprises a mechanism for estimating (404,604) the power consumption on the E-DCH Hybrid Automatic Repeat Request (HARQ) Acknowledgement Indicator Channel (E-HICH) by calculating a first average value for the power consumption.

33. Node-B (NB) (11) according to claim 32 wherein the Node-B (NB) (11) comprises a mechanism for calculating (404) the first average value using stored E-HICH power consumption values and the corresponding transmission time information for the E-DCH DL transmission of E-HICH.

34. Node-B (NB) (11) according to claim 33 wherein the Node-B (NB) (11) comprises a mechanism for storing (303) the E-HICH power consumption value and the corresponding transmission time information for the E-DCH DL transmission when detecting that an E-DCH DL transmission is made on the E-HICH channel.

35. Node-B (NB) (11) according to any of the claims 33-34 wherein when the first average value for the power consumption for E-HICH has been calculated, the Node-B (NB) (11) comprises a mechanism for estimating (608) the power consumption by performing the following steps:

calculating (605) a second average value for the quotient between an E-HIGH Negative ACK (NACK) and Acknowledgement (ACK) for a first time period,

calculating (606) a third average value for the quotient between a E-HIGH Negative ACK (NACK) and Acknowledgement (ACK) for a second time period being smaller than the first time period,

biasing or compensating (607) the first average value for the power consumption for the E-HICH using the quotient between the second average value and the third average value for the quotient between an E-HICH Negative ACK (NACK) and Acknowledgement (ACK.

36. Node-B (NB) (11) according to claim 35 wherein the Node-B (NB) (11) comprises a mechanism for calculating (604) the first average value using stored E-HICH ACK and NACK power consumption transmit attempt values and corresponding transmission time information for the E-DCH DL transmission.

37. Node-B (NB) (11) according to claim 36 wherein the Node-B (NB) (11) comprises a mechanism for storing (504,505) the E-HICH either ACK or NACK power consumption value and corresponding transmission time information for the E-DCH DL transmission when detecting that a E-DCH DL transmission is made on the E-HICH channel.

38. Node-B (NB) (11) according to any of the claims 32-37 wherein the Node-B (NB) (11) comprises a mechanism for sending (405,609) the estimated power consumption by sending the first average value or biased first average value for the power consumption for the E-HICH to the HSDPA scheduler (HS-S).

39. Node-B (NB) (11) according to any of the claims 25-31 wherein the Node-B (NB) (11) comprises a mechanism for estimating (809,906,106) the power consumption and/or the corresponding transmission time on the E-DCH Hybrid Automatic Repeat Request (HARQ) Acknowledgement Indicator Channel (E-HICH) by performing the following steps:

awaiting the reception (802,902,102) of the Enhanced Downlink Physical Control Channel (E-DPCCH),

storing (805,904,104) a determined transmission time for a E-DCH DL transmission on an E-DCH Hybrid Automatic Repeat Request (HARQ) Acknowledgement Indicator Channel (E-HICH),

determining (810,907,107) the deadline where the HSDPA scheduler (HS-S) must collect the estimated power consumption and/or the corresponding transmission time for E-HICH in order to schedule the data rate for the DL data traffic via the HS-DSCH.

40. Node-B (NB) (11) according to claim 39 wherein the Node-B (NB) (11) comprises a mechanism for decoding (803,903) the content of E-DPCCH before storing (805,904) the determined transmission time.

41. Node-B (NB) (11) according to any of the claims 39-40 wherein the Node-B (NB) (11) comprises a mechanism for decoding (804) the content of a received Enhanced Downlink Physical Dedicated Channel (E-DPDCH) before storing (805) the determined transmission time.

42. Node-B (NB) (11) according to claim 39 wherein the Node-B (NB) (11) comprises a mechanism for detecting (103) a Discontinuous Transmission (DTX) before storing (104) the determined transmission time.

43. Node-B (NB) (11) according to any of the claims 39-42 wherein the Node-B (NB) (11) comprises a mechanism for performing the following steps after storing the determined transmission time:

awaiting (806) information if an Acknowledgement (ACK) or a Negative ACK (NACK) is about to be transmitted in the E-DCH DL transmission on the E-HICH,

determining (806) whether it as an ACK or NACK that will be transmitted,

fetching (807,808) the latest available estimated power consumption for the ACK and NACK that will be transmitted.

44. Node-B (NB) (11) according to any of the claims 39-42 wherein the Node-B (NB) (11) comprises a mechanism for performing the following step after storing the determined transmission time:

fetching (905,105) the combined value of the latest available power consumption for the ACK or NACK that will be transmitted in the E-DCH DL transmission on the E-HICH.

45. Node-B (NB) (11) according to any of the claims 39-44 wherein the Node-B (NB) (11) comprises a mechanism for sending (811,908,108) the estimated power consumption and/or the corresponding transmission time information for all E-HICH contributors to the HSDPA scheduler (HS-S).

46. Node-B (NB) (11) according to any of the claims 25-45 wherein the Node-B (NB) (11) comprises a mechanism for estimating the power consumption and/or the corresponding transmission time per UE (15).

47. Node-B (NB) (11) according to any of the claims 25-46 wherein the HSDPA scheduler (HS-S) comprises a mechanism for using the estimated power consumption and/or the corresponding transmission time when scheduling the data rate for the DL data traffic via the HS-DSCH.

48. Node-B (NB) (11) according to any of the claims 25-38 wherein the estimation (403,404,604,608) of the power consumption and/or the corresponding transmission time is preceded by the awaiting (402,602) of the completed E-DCH scheduling.

49. Communication system for distribution of downlink E-DCH power usage, at least one Node-B being located in the communication system for enabling wireless communication with at least one user terminal (UE) (15),

the communication being enabled via an enhanced dedicated transport channel (E-DCH) and one high speed downlink shared channel (HS-DSCH) for uplink (UL) and downlink (DL) data traffic between the user terminal (UE) (15) and the Node-B (NB) (11),

the Node-B (NB) (11) comprising a HSDPA scheduler (HS-S) for scheduling the data rate for the DL data traffic via the HS-DSCH and an EUL scheduler (EUL-S) for scheduling the maximum data rate for the UL data traffic via the E-DCH,

characterized in that

the Node-B (NB) (11) comprises a mechanism for estimating (403,404,603,604,608,809,906,106,111) the power consumption and/or the corresponding transmission time for at least one forthcoming E-DCH DL transmission on at least one E-DCH physical channel,

the Node-B (NB) (11) further comprises a mechanism for sending (403,405,603,609,811,908,108,112) the estimated power consumption and/or the corresponding transmission time information to the HSDPA scheduler (HS-S) prior to the E-DCH DL transmission.