Method of Multiplexing and Transmission of Uplink Control Information and Related Communication Device

• US 20120113962A1
• Filed: 05/06/2011
• Published: 05/10/2012
• Est. Priority Date: 05/06/2010
• Status: Abandoned Application

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Jen, Yu-Chih
• Application Number:
  US13/102,074
• Publication Number:
  US 20120113962A1
• Time in Patent Office: Days
• US Class Current: 370/336
• CPC Class Codes: H04L 1/16 in which the return channel carries supervisory signals, e.g. repetition request signals
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0042 intra-user or intra-terminal allocation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/0096 Indication of changes in allocation
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands

Abstract

A method of handling an acknowledgement/negative acknowledgement (ACK/NACK) transmission for a mobile device with a carrier aggregation (CA) in a wireless communication system is disclosed. The method comprises receiving a configuration or an activation of the CA with at least one uplink (UL) component carrier and a plurality downlink (DL) component carriers from a network of the wireless communication system, and performing a simultaneous transmission of a scheduling request (SR) and the ACK/NACK, which corresponds to DL transmissions on the plurality of DL component carriers, with at least one PUCCH resource or on at least one PUCCH resource in a subframe according to one of a plurality of ACK/NACK transmission schemes configured or supported by the network.

Claims

1. A method of handling an acknowledgement/negative acknowledgement (ACK/NACK) transmission for a mobile device with a carrier aggregation (CA) in a wireless communication system, the method comprising:

receiving a configuration or an activation of the CA with at least one uplink (UL) component carrier and a plurality downlink (DL) component carriers from a network of the wireless communication system; and

performing a simultaneous transmission of a scheduling request (SR) and the ACK/NACK, which corresponds to DL transmissions on the plurality of DL component carriers, with at least one PUCCH resource or on at least one PUCCH resource in a subframe according to one of a plurality of ACK/NACK transmission schemes configured or supported by the network.

2. The method of claim 1, wherein at least one of at least one SR resource, a bundling, a channel selection, a sequence selection, a sequence hopping, a cyclic time shift selection, a cyclic time shift hopping, a joint coding, a multi-sequence transmission, a reference signal resource, PUCCH format 1/1a/1b symbols of SR resource, and a PUCCH format 2 structure in an extended cyclic prefix (CP) case is used by each of the plurality of ACK/NACK transmission schemes configured or supported by the network.

3. The method of claim 2 further comprising for an ACK/NACK transmission scheme using the at least one SR resource, performing the simultaneous transmission of the SR and the ACK/NACK by using the at least one SR resource to carry the ACK/NACK information when only one ACK/NACK resource is required for the transmission of the ACK/NACK.

4. The method of claim 2 further comprising for an ACK/NACK transmission scheme using the at least one SR resource, performing the simultaneous transmission of the SR and the ACK/NACK by using the at least one SR resource to carry the ACK/NACK information of at least one ACK/NACK resource, when the at least one ACK/NACK resource is required for the transmission of the ACK/NACK.

5. The method of claim 4 further comprising transmitting or dropping the ACK/NACK information of the rest of the at least one ACK/NACK resource.

6. The method of claim 2 further comprising for an ACK/NACK transmission scheme using the bundling, bundling the ACK/NACK information as the ACK/NACK on an ACK/NACK resource and transmitting the ACK/NACK on a SR resource configured by the network.

7. The method of claim 6, wherein the SR resource and the ACK/NACK resource are of a same PUCCH resource;

or the SR resource and the ACK/NACK resource are of different PUCCH resources.

8. The method of claim 6 further comprising:

bundling the ACK/NACK information as the ACK/NACK on the ACK/NACK resource; and

transmitting the ACK/NACK on one of the at least one SR resource, when the mobile device is configured with the at least one SR resource;

wherein the one of the at least one SR resource and the ACK/NACK resource are of a same PUCCH resource.

9. The method of claim 6, wherein a DL assignment index is carried in a radio resource control (RRC) signaling or on a physical DL control channel (PDCCH) for DL transmissions on the plurality DL component carriers for supporting the ACK/NACK transmission scheme using the bundling.

10. The method of claim 2 further comprising for an ACK/NACK transmission scheme using the channel selection and the mobile device being configured with the at least one SR resource, performing the channel selection;

multiplexing the ACK/NACK information as the ACK/NACK on at least one ACK/NACK resource into a first ACK/NACK resource; and

transmitting the ACK/NACK on a first SR resource if the first SR resource and the first ACK/NACK resource are of a same PUCCH resource.

11. The method of claim 10 further comprising transmitting the ACK/NACK on the first ACK/NACK resource and transmitting the SR simultaneously on a SR resource which is the only SR resource configured to the mobile device, if the SR source and the first ACK/NACK resource are of different PUCCH resources.

12. The method of claim 10, wherein an Acknowledgement resource index is carried in the RRC signaling or on the PDCCH for DL transmissions on the plurality DL component carriers for supporting the ACK/NACK transmission scheme using the channel selection.

13. The method of claim 10 further comprising transmitting the ACK/NACK on one of the at least one SR resource if a number of the at least one SR resource configured to the mobile device and a number of the at least one ACK/NACK resource are the same, wherein the one of the at least one SR resource and an ACK/NACK resource after channel selection or the ACK/NACK resource are of a same PUCCH resource.

14. The method of claim 2, wherein for an ACK/NACK transmission scheme using the multi-sequence transmission, the mobile device is configured with the at least one SR resource.

15. The method of claim 14 further comprising transmitting the ACK/NACK information scheduled on each of at least one ACK/NACK resource on a corresponding SR resource of the at least one SR resource, if the number of the at least one SR resource and the number of the at least one ACK/NACK resource are configured to be the same, wherein the each of the at least one ACK/NACK resource and the corresponding SR resource of the at least one SR resource are of a same PUCCH resource.

16. The method of claim 14 further comprising transmitting the ACK/NACK information scheduled on a second ACK/NACK resource of the at least one ACK/NACK resource on a SR resource which is the only SR resource configured to the mobile device, if the SR resource and the second ACK/NACK resource of the at least one ACK/NACK resource are of a same PUCCH resource.

17. The method of claim 16 further comprising simultaneously transmitting the ACK/NACK information on the rest of the at least one ACK/NACK resource, wherein the rest of the at least one ACK/NACK resource is different from the second ACK/NACK resource of the at least one ACK/NACK resource.

18. The method of claim 2 further comprising for an ACK/NACK transmission scheme using the PUCCH format 1/1a/1b symbols of SR resource, transmitting the SR by using one of reference signal (RS) symbols for reference signals or one of 8 data symbols if the ACK/NACK for DL transmissions on the plurality DL component carriers is multiplexed in a structure similar to the PUCCH format 1/1a/1b structure.

19. The method of claim 2, wherein a PUCCH format for an ACK/NACK transmission scheme or the simultaneous transmission of the SR and the ACK/NACK is the PUCCH format 1/1a/1b.

20. The method of claim 2 further comprising for an ACK/NACK transmission scheme using the joint coding, jointly encoding the SR and the ACK/NACK in a PUCCH format for the simultaneous transmission of the SR and the ACK/NACK.

21. The method of claim 20, wherein a normal cyclic prefix is applied for each subframe of a frame structure.

22. The method of claim 2 further comprising for an ACK/NACK transmission scheme using the reference signal resource, transmitting the SR by using one of the RS symbols for reference signals, if the ACK/NACK for DL transmissions on the plurality DL component carriers is multiplexed in a structure similar to a PUCCH format 2/2a/2b structure.

23. The method of claim 22 further comprising enabling the ACK/NACK transmission scheme for a low Doppler situation.

24. The method of claim 22, wherein the network performs a blind decoding or a hypothesis testing to decode the ACK/NACK and the SR.

25. The method of claim 22 further comprising not scrambling the SR by using a length-31 Gold sequence.

26. The method of claim 2 further comprising for an ACK/NACK transmission scheme using the PUCCH format 2 structure, jointly encoding or multiplexing the SR and the ACK/NACK by using a Reed-Muller based block code (20, K(ACK/NACK)+K(SR)).

27. The method of claim 26, wherein the largest number of information bits supported by the Reed-Muller based block code is 13.

28. The method of claim 27, wherein the number of information bits for the SR is 1, and the number of information bits for the ACK/NACK is at most 12.

29. The method of claim 26, wherein the Reed-Muller based block code generates a codeword of 20 bits.

30. The method of claim 26, wherein the extended cyclic prefix is applied for each subframe of the frame structure.

31. The method of claim 2 further comprising using the at least one SR resource for transmitting the ACK/NACK or using a SR resource for either transmitting the SR or the ACK/NACK, if the at least one PUCCH resource is required for performing the simultaneous transmission of the SR and the ACK/NACK, according to at least one of the plurality of ACK/NACK transmission schemes configured or supported by the network.

32. The method of claim 2 further comprising using a SR resource for transmitting the ACK/NACK, using a reference symbol to carry the SR, using at least one data symbol to carry the SR or jointly encoding the SR with the ACK/NACK, if only one PUCCH resource is required for performing the simultaneous transmission of the SR and the ACK/NACK, according to at least one of the plurality of ACK/NACK transmission schemes configured or supported by the network.

33. The method of claim 2, wherein at least one SR resource is configured by the network so that at least one ACK/NACK resource after performing the multiplexing, the bundling or the joint coding and the at least one SR resource are always of a same at least one PUCCH resource, when the SR is simultaneously transmitted by using the plurality of ACK/NACK transmission schemes configured or supported by the network for DL transmissions on the plurality of DL component carriers.

34. The method of claim 1, wherein an ACK/NACK transmission or the simultaneous transmission of the SR and the ACK/NACK with the at least one PUCCH resource or on the at least one PUCCH resource is only supported for adjacent PUCCH resources.

35. A method of handling a single carrier property for a mobile device with a carrier aggregation (CA) in a wireless communication system, the method comprising:

receiving a configuration or an activation of the CA with at least one uplink (UL) component carrier and a plurality of downlink (DL) component carriers from a network of the wireless communication system; and

deciding whether to obey the single carrier property according to at least one of a network indication, at least one configured threshold value, a channel estimation, a channel measurement, a positioning measurement and a mobility measurement.

36. The method of claim 35, wherein the at least one configured threshold value is compared with or examined or used for at least one of a power headroom calculation, a power level calculation, a path loss measurement, the channel measurement, the mobility measurement and the positioning measurement.

37. The method of claim 35 further comprising deciding whether performing a multi-sequence transmission or whether performing an acknowledgement/negative acknowledgement (ACK/NACK) transmission only on a SR resource according to the decision of whether to obey the single carrier property, when the ACK/NACK transmission or a simultaneous transmission of the SR and the ACK/NACK requires a plurality of PUCCH resources for DL transmissions on the plurality of DL component carriers.

38. The method of claim 35 further comprising not obeying the single carrier property for necessary UL control information transmission on the plurality of PUCCH resources, when the mobile device is closed to abase station, with a good channel condition, with a small power level, with a limited power level, with a small power headroom or with a limited power headroom compared to corresponding at least one threshold value of the at least one configured threshold value.

39. A method of handling uplink (UL) control information transmission for a mobile device with a carrier aggregation (CA) in a wireless communication system, the method comprising:

receiving a configuration or an activation of the CA with at least one UL component carrier and a plurality downlink (DL) component carriers from a network of the wireless communication system;

transmitting part of the UL control information in a physical UL control channel (PUCCH) format on a PUCCH resource of a plurality of PUCCH resources of a UL component carrier; and

transmitting the rest of the UL control information and physical UL shared channel (PUSCH) data which are multiplexed on a PUSCH;

wherein the UL control information are required for DL signaling or transmissions on the plurality DL component carriers, a plurality of PUCCH transmission schemes or both.

40. The method of claim 39, wherein the plurality of PUCCH transmission schemes comprises at least one transmission scheme of acknowledgement/negative acknowledgement (ACK/NACK), at least one simultaneous transmission of a scheduling request (SR) and ACK/NACK or at least one multiplexing scheme of channel state indicator (CSI) and ACK/NACK.

41. The method of claim 39, wherein transmitting the part of UL control information in the PUCCH format on the PUCCH resource of the plurality of PUCCH resources of the UL component carrier comprises transmitting the part of UL control information in the PUCCH format on the PUCCH resource of the plurality of PUCCH resources of the UL component carrier according to at least one of priorities of the UL control information, at least one of the plurality of PUCCH transmission schemes, at least one of the plurality of PUCCH resources, at least one PUCCH resource index, a transmission power limitation of the mobile device, a transmission power headroom of the mobile device, content of UL control information, a PUCCH scheduling timing and a PUSCH scheduling timing.

42. The method of claim 41, wherein the priorities of the UL control information in high to low priority order are the SR, the ACK/NACK, the channel quality indicator (CQI), the precoding matrix indicator (PMI) and the rank indicator (RI).

43. The method of claim 41 further comprising transmitting a sounding reference signal (SRS) on the PUCCH or the PUSCH according to at least one of the PUCCH format for transmitting the UL control information, whether the plurality of PUCCH resources are required, comparison of a priority of the SRS and the priorities of the UL control information and the SRS bandwidth, if the SRS and the UL control information are scheduled in a same subframe.

44. The method of claim 39, wherein the PUCCH and the PUSCH are scheduled in a same subframe or in different subframes.

45. The method of claim 39, wherein a location or mapping of the rest of the UL control information on the PUSCH is decided according to at least one of a modulation and coding scheme (MCS), a resource offset of the rest of the UL control information, an interleaving scheme, a puncturing scheme and a multiplexing scheme.

46. A method of handling uplink (UL) control information transmission for a mobile device with a carrier aggregation (CA) in a wireless communication system, the method comprising:

receiving a configuration or an activation of the CA with at least one UL component carrier and a plurality downlink (DL) component carriers from a network of the wireless communication system;

transmitting part of the UL control information in at least one physical UL control channel (PUCCH) format on at least one PUCCH resource of a UL component carrier; and

transmitting the rest of the UL control information and physical UL shared channel (PUSCH) data which are multiplexed on a PUSCH;

wherein the UL control information are required for DL signaling or transmissions on the plurality DL component carriers, a plurality of PUCCH transmission schemes or both.

47. The method of claim 46, wherein transmitting the part of UL control information in the at least one PUCCH format on the at least one PUCCH resource of the UL component carrier comprises transmitting the part of UL control information in the at least one PUCCH format on a group of the at least one PUCCH resource, if at least one PUCCH resource in the group of the at least one PUCCH resource are adjacent.

48. The method of claim 46, wherein the plurality of PUCCH transmission schemes comprises at least one transmission scheme of acknowledgement/negative acknowledgement (ACK/NACK), at least one simultaneous transmission of a scheduling request (SR) and ACK/NACK or at least one multiplexing scheme of channel state indicator (CSI) and ACK/NACK.

49. The method of claim 46, wherein transmitting the part of UL control information in the at least one PUCCH format on the at least one PUCCH resource of the UL component carrier comprises transmitting the part of UL control information in the at least one PUCCH format on the at least one PUCCH resource of the UL component carrier according to at least one of priorities of the UL control information, at least one of the plurality of PUCCH transmission schemes, at least one of the at least one PUCCH resource, at least one PUCCH resource index, a transmission power limitation of the mobile device, a transmission power headroom of the mobile device, content of UL control information, a PUCCH scheduling timing and a PUSCH scheduling timing.

50. The method of claim 49, wherein the priorities of the UL control information in high to low priority order are the SR, the ACK/NACK, the CQI, the precoding matrix indicator (PMI) and the rank indicator (RI).

51. The method of claim 49 further comprising transmitting a sounding reference signal (SRS) on the PUCCH or the PUSCH according to at least one of the at least one PUCCH format for transmitting the UL control information, whether the at least one PUCCH resource is required, comparison of a priority of the SRS and the priorities of the UL control information and the SRS bandwidth, if the SRS and the UL control information are scheduled in a same subframe.

52. The method of claim 46, wherein the PUCCH and the PUSCH are scheduled in a same subframe or in different subframes.

53. The method of claim 46, wherein a location or mapping of the rest of the UL control information on the PUSCH is decided according to at least one of a modulation and coding scheme (MCS), a resource offset of the rest of the UL control information, an interleaving scheme, a puncturing scheme and a multiplexing scheme.