Method implemented in a user equipment

• US 9,088,971 B2
• Filed: 12/19/2012
• Issued: 07/21/2015
• Est. Priority Date: 12/23/2011
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Anderson, Nicholas William, Harrison, Robert Mark, Novak, Robert, Vutukuri, Eswar
• Primary Examiner(s): KHAJURIA, SHRIPAL K
• Application Number:
  US13/719,667
• Publication Number:
  US 20130163535A1
• Time in Patent Office: 944 Days
• Field of Search: 370/329
• US Class Current: 1/1
• CPC Class Codes: H04B 7/04 using two or more spaced independent antennas
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 1/0625 Transmitter arrangements
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

In some implementations, a method implemented in user equipment UE for use in a wireless system for single carrier frequency division multiple access SC-FDMA includes receiving an assignment of a recurring scheduling request resource from within the wireless system. Information is transmitted on an instance of the assigned recurring scheduling request resource within an SC-FDMA uplink shared channel signal wherein said information comprises a user ID.

Claims

1. A method implemented in a user equipment UE for use in a wireless system for single carrier frequency division multiple access SC-FDMA, the method comprising:

receiving an assignment of a recurring scheduling request resource from within the wireless system, wherein the assignment of the recurring scheduling request is transmitted to a plurality of UEs including the UE; and

transmitting information on an instance of the assigned recurring scheduling request resource within an SC-FDMA uplink shared channel signal wherein said information comprises a user ID.

2. A method according to claim 1 further comprising determining a need to transmit on scheduled uplink resources within the wireless system;

and

wherein said transmitting is performed upon determining that there is a need to transmit on scheduled uplink resources.

3. A method according to claim 1 wherein the assignment is received via a broadcast transmission or common signalling message transmitted by an eNB of the wireless system.

4. A method according to claim 1 wherein the assignment is received via a dedicated transmission by an eNB of the wireless system.

5. A method according to claim 1 wherein the user ID is related to a Cell Radio Network Temporary Identifier C-RNTI.

6. A method according to claim 1 wherein the information further comprises a medium access control MAC element comprising the user ID.

7. A method according to claim 1 wherein the information further comprises a buffer status report BSR.

8. A method according to claim 1 wherein the information further comprises radio channel status information.

9. The method of claim 8 wherein the radio channel status information comprises one or more of:

A Channel Quality Information (CQI) report

A Precoding Matrix Indication (PMI) report

A Rank Indication (RI) report

A Channel Status Information (CSI) report

A Power Headroom Report (PHR).

10. A method according to claim 1 wherein transmitting the information within the SC-FDMA uplink shared channel signal comprises scrambling bits with a non-user-specific bit scrambling sequence.

11. A method according to claim 10 wherein the bit scrambling sequence is associated with the assigned scheduling request resource.

12. A method according to claim 10 wherein information related to the non-user specific bit scrambling sequence is received from an eNB of the wireless system.

13. A method according to claim 1 further comprising monitoring a PDCCH channel for an uplink grant signal addressed to the user ID of the UE confirming grant of the requested uplink resources.

14. A method according to claim 13 further comprising transmitting a further scheduling request upon monitoring the PDCCH channel for a period of time without detecting the uplink grant signal.

15. A method according to claim 14 wherein the further scheduling request is transmitted on a subsequent instance of the assigned scheduling request resource.

16. A method according to claim 15 wherein the further scheduling request utilises an alternative scheduling request access method and is transmitted on a Dedicated Scheduling Request DSR resource or on a Random Access Channel RACH resource.

17. A method according to claim 16 wherein the further scheduling request utilising an alternative scheduling request access method is transmitted upon determining that a maximum allowed number of scheduling requests utilising the same access method has been reached.

18. A method according to claim 1 wherein the information includes user-plane data.

19. A method according to claim 1 further comprising receiving a signal comprising an indication from an eNB of the wireless system, the indication relating to a permission to include user plane data with the information [and including or not including user plane data within the information in accordance with the received indication.

20. A method according to claim 18 further comprising receiving ACK/NACK information from a eNB on a Physical Hybrid Automatic Repeat Request Indicator Channel PHICH and triggering at least one re-transmission of the SC-FDMA uplink shared channel signal in accordance with a hybrid automatic repeat request HARQ scheme upon receiving a NACK on the PHICH channel.

21. A method according to claim 20 further comprising upon receipt of an ACK signal on the PHICH channel, monitoring a PDCCH channel for an uplink grant signal addressed to the user ID of the UE to confirm grant of the requested uplink resources.

22. A method according to claim 20 further comprising retransmitting the information on an instance of the assigned recurring scheduling request resource upon monitoring the PDCCH channel for a period of time without detecting an uplink grant signal.

23. A method according to claim 22 further comprising counting a number of times the information has been transmitted and utilising an alternative scheduling request access method upon determining that a maximum allowed number of transmissions has been reached.

24. A method according to claim 23 wherein the alternative scheduling request access method utilises a Dedicated Scheduling Request DSR resource or a Random Access Channel RACH resource.

25. A method according to claim 1 wherein the SC-FDMA signal utilised by the wireless system comprises reference signals having a cyclic shift of a spreading sequence and the method further comprises:

selecting a reference signal cyclic shift; and

utilising the selected reference signal cyclic shift to transmit reference signals accompanying the transmitted information on the instance of the recurring scheduling request resource.

26. A method according to claim 1 wherein the SC-FDMA signal utilised by the wireless system comprises reference signals and the method further comprises:

receiving a reference signal configuration; and

utilising the reference signal configuration to transmit reference signals accompanying the information on the instance of the recurring scheduling request resource.

27. A method according to claim 26 wherein the reference signal configuration comprises a reference signal cyclic shift.

28. A method according to claim 26 wherein the received reference signal configuration defines an allowed set of reference signal cyclic shifts and the reference signal cyclic shift is selected from within the allowed set.

29. A method according to claim 1 further comprising determining one or more attributes of the recurring scheduling request resource from a received RRC signalling message.

30. A method according to claim 29 further comprising determining one or more other attributes of the recurring scheduling request resource from a received PDCCH signalling message.

31. A method according to claim 29 wherein the one or more attributes include a group radio network temporary identifier g-RNTI for initialising a bit scrambling sequence generator for scrambling the information transmitted within the SC-FDMA uplink shared channel signal on the recurring scheduling request resource.

32. A method according to claim 1 wherein the assigned scheduling request resource is within a PUCCH frequency region of an uplink system bandwidth of the wireless system.

33. A method according to claim 1 wherein the assigned recurring scheduling request resource is within a PUSCH frequency region of an uplink system bandwidth of the wireless system.

34. A method according to claim 1 wherein receiving the assignment of the recurring scheduling request resource comprises receiving an assignment of a plurality of recurring scheduling request resources.

35. A method according to claim 1 wherein the assignment of the scheduling request resource is by semi persistent scheduling SPS administered via assigning a time domain recurrence of the resource using an RRC signalling message and using a Physical Downlink Control Channel PDCCH message of the wireless system to assign one or more other attributes of the scheduling request resource or to deactivate or activate an assignment of the scheduling request resource.

36. A method according to claim 35 further comprising upon determining that the UE is in a long or short DRX cycle and upon determining a need to transmit messages on the scheduled uplink resources:

checking that the recurring scheduling request resource will be valid for the next occurrence of the resource and transmitting on that resource only if the check determines that the allocation is valid.

37. A method according to claim 36 wherein if the check determines that the allocation is not valid:

using an alternative uplink scheduling request method or an alternative access method;

or

continuing to monitor the PDCCH in order to identify valid resource time occasions.

38. A user equipment (UE) for use in a wireless system for single carrier frequency division multiple access SC-FDMA, comprising:

one or more processors configured to;

receive an assignment of a recurring scheduling request resource from within the wireless system, wherein the assignment of the recurring scheduling request is transmitted to a plurality of UEs including the UE; and

transmit information on an instance of the assigned recurring scheduling request resource within an SC-FDMA uplink shared channel signal wherein said information comprises a user ID.

39. The UE of claim 38, the one or more processors further configured to determine a need to transmit on scheduled uplink resources within the wireless system;

and

wherein said transmitting is performed upon determining that there is a need to transmit on scheduled uplink resources.

40. The UE of claim 38, wherein the assignment is received via a broadcast transmission or common signalling message transmitted by an eNB of the wireless system.

41. The UE of claim 38, wherein the assignment is received via a dedicated transmission by an eNB of the wireless system.

42. The UE of claim 38, wherein the user ID is related to a Cell Radio Network Temporary Identifier C-RNTI.

43. The UE of claim 38, wherein the information further comprises a medium access control MAC element comprising the user ID.

44. The UE of claim 38, wherein the information further comprises a buffer status report BSR.

45. The UE of claim 38, wherein the information further comprises radio channel status information.

46. The UE of claim 38, the one or more processors configured to transmit the information within the SC-FDMA uplink shared channel signal comprises the one or more processors configured to scramble bits with a non-user-specific bit scrambling sequence.

47. The UE of claim 38, the one or more processors further configured to monitor a PDCCH channel for an uplink grant signal addressed to the user ID of the UE confirming grant of the requested uplink resources.

48. The UE of claim 38, wherein the information includes user-plane data.

49. The UE of claim 38, the one or more processors further configured to receive a signal comprising an indication from an eNB of the wireless system, the indication relating to a permission to include user plane data with the information and including or not including user plane data within the information in accordance with the received indication.

50. The UE of claim 38, wherein the SC-FDMA signal utilised by the wireless system comprises reference signals having a cyclic shift of a spreading sequence, the one or more processors further configured to:

select a reference signal cyclic shift; and

utilise the selected reference signal cyclic shift to transmit reference signals accompanying the transmitted information on the instance of the recurring scheduling request resource.

51. The UE of claim 38, wherein the SC-FDMA signal utilised by the wireless system comprises reference signals, the one or more processors further configured to:

receive a reference signal configuration; and

utilise the reference signal configuration to transmit reference signals accompanying the information on the instance of the recurring scheduling request resource.

52. The UE of claim 38, the one or more processors further configured to determine one or more attributes of the recurring scheduling request resource from a received RRC signalling message.

53. The UE of claim 38, wherein the assigned scheduling request resource is within a PUCCH frequency region of an uplink system bandwidth of the wireless system.

54. The UE of claim 38, wherein the assigned recurring scheduling request resource is within a PUSCH frequency region of an uplink system bandwidth of the wireless system.

55. The UE of claim 38, wherein the one or more processors further configured to receive the assignment of the recurring scheduling request resource comprises the one or more processors further configured to receive an assignment of a plurality of recurring scheduling request resources.

56. The UE of claim 38, wherein the assignment of the scheduling request resource is by semi persistent scheduling SPS administered via assigning a time domain recurrence of the resource using an RRC signalling message and using a Physical Downlink Control Channel PDCCH message of the wireless system to assign one or more other attributes of the scheduling request resource or to deactivate or activate an assignment of the scheduling request resource.

57. A non-transitory computer readable medium for use in a user equipment for single carrier frequency division multiple access SC-FDMA, comprising storing instructions to cause a processor to perform operations comprising:

receiving an assignment of a recurring scheduling request resource from within the wireless system, wherein the assignment of the recurring scheduling request is transmitted to a plurality of UEs including the UE; and

transmitting information on an instance of the assigned recurring scheduling request resource within an SC-FDMA uplink shared channel signal wherein said information comprises a user ID.

58. The computer readable medium of claim 57, wherein the assigned recurring scheduling request resource is within a PUSCH frequency region of an uplink system bandwidth of the wireless system.

59. The computer readable medium of claim 57, wherein the instructions comprising receiving the assignment of the recurring scheduling request resource comprises receiving an assignment of a plurality of recurring scheduling request resources.

60. The computer readable medium of claim 57, wherein the assigned scheduling request resource is within a PUCCH frequency region of an uplink system bandwidth of the wireless system.

61. A method implemented in a user equipment UE for a wireless telecommunications system, comprising:

receiving an assignment of a recurring scheduling request resource comprising a plurality of subcarriers, wherein the assignment of the recurring scheduling request is transmitted to a plurality of UEs including the UE;

determining a need to transmit on scheduled uplink resources;

encoding the information comprising at least a portion of a user ID to generate encoded bits;

modulating the encoded bits to produce modulated symbols;

spreading the modulated symbols;

mapping each of the spread modulated symbols to the plurality of subcarriers; and

upon determining that there is a need to transmit, transmitting information on an instance of the plurality of subcarriers of the assigned recurring scheduling request resource within an uplink shared channel signal wherein said information comprises at least a portion of a user ID.