METHOD AND APPARATUS FOR UPLINK TRANSMISSIONS AND CQI REPORTS WITH CARRIER AGGREGATION

• US 20100226327A1
• Filed: 01/12/2010
• Published: 09/09/2010
• Est. Priority Date: 03/09/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Zhang, Jianzhong, Nam, Young-Han, Liu, Lingjia, Lee, Juho
• Granted Patent: US 8,305,986 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 7/0632 Channel quality parameters, e.g. channel quality indicator [CQI]
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0028 Variable division signaling therefor H04L5/0092
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling
• CPC Class Codes: H04L 5/0083 symbol-by-symbol
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 52/08 Closed loop power control
• CPC Class Codes: H04W 52/34 TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading

Abstract

A mobile station capable of communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network is configured to transmit multiple channel quality index (CQI) reports corresponding to multiple downlink component carriers. The mobile station includes at least one transmit antenna and a transmitter. The transmitter can communicate with a base station over the multiple downlink component carriers and at least one uplink component carrier. The transmitter can transmit the CQI report over the at least one uplink component carrier using at least one of a number of CQI reporting modes.

Claims

1. For use in a wireless communication network, a mobile station capable of communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network, said mobile station comprising:

at least one transmit antenna; and

a transmitter configured to communicate with the at least one base station via a plurality of downlink component carriers and at least one uplink component carrier, wherein the transmitter is configured to transmit at least one periodic Physical Uplink Control Channel (PUCCH) channel quality index (CQI) report for a downlink component carrier in the at least one uplink component carrier, and wherein the periods for the at least one PUCCH CQI report are the same for all uplink component carriers, and wherein a first PUCCH CQI for a first downlink component carrier is carried over a first uplink component carrier.

2. The mobile station as set forth in claim 1, wherein a number of uplink component carriers equals a number of downlink component carriers and wherein the transmitter is configured to transmit the CQI report such that each uplink component carrier carries a CQI corresponding to a respective downlink component carrier.

3. The mobile station as set forth in claim 2, wherein the CQI reporting mode comprises an offset mode such that the transmitter is configured to insert a timing offset into at least one CQI report such that a first CQI is transmitted in a different subframe than a second CQI.

4. The mobile station as set forth in claim 3, wherein when a minimum period among all PUCCH CQI reports is P, a period of the at least one PUCCH CQI report is N*P, where N is an integer, and wherein the offset varies from 0 to P−

1.

5. The mobile station as set forth in claim 1, wherein the CQI reporting mode comprises a hopping mode such that the transmitter is configured to transmit the first PUCCH CQI report for the first downlink component carrier over the first uplink component carrier in a first subframe and over a second uplink component carrier in a subsequent subframe.

6. The mobile station as set forth in claim 5, wherein the transmitter is configured to insert a timing offset into at least one CQI report such that the first PUCCH CQI is transmitted in a different subframe than a second PUCCH CQI report for a second downlink component carrier.

7. For use in a wireless communication network, a mobile station capable of communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network, said mobile station comprising:

at least one transmit antenna; and

a transmitter configured to communicate with the at least one base station via a plurality of downlink component carriers and at least one uplink component carrier, wherein the transmitter is configured to transmit a channel quality index (CQI) report for a corresponding downlink component carrier in the at least one uplink component carrier, wherein a number of uplink component carriers is less than a number of downlink component carriers and wherein the transmitter is configured to transmit the CQI report corresponding to a subset of the downlink component carriers by transmitting at least two CQI reports corresponding to the set of downlink component carriers over one uplink component carrier.

8. The mobile station as set forth in claim 7, wherein the transmitter is configured to multiplex the at least two CQI reports on a different set of resources and transmit the multiplexed CQI reports in a subframe of at least one uplink component carrier.

9. The mobile station as set forth in claim 7, wherein the transmitter is configured to transmit a first of at least two CQI reports in a first subframe and a second of the at least two CQI reports in a second subframe.

10. The mobile station as set forth in claim 7, wherein the transmitter is configured, via one of a UE-specific higher layer signaling and a cell-specific broadcast signal, to select a CQI reporting mode of one of:

sending a first of at least two CQI reports in a first subframe and a second of the at least two CQI reports in a second subframe; and

multiplexing the at least two CQI reports on a different set of resources and transmitting the multiplexed CQI reports in a subframe of at least one uplink carrier.

11. The mobile station as set forth in claim 10, wherein the CQI reporting mode further comprises at least one of:

a user equipment specific message in an uplink scheduling assignment grant wherein each transmit power control (TPC) corresponds to one component carrier for the mobile station; and

a component carrier specific message in a common command wherein at least one TPC corresponds to all component carriers.

12. The mobile station as set forth in claim 7, wherein a plurality of the CQI reports across multiple component carriers are jointly encoded and transmitted over an enlarged payload, and wherein the enlarged payload comprises a plurality of uplink PUCCH resources.

13. The mobile station as set forth in claim 12, wherein at least two PUCCH CQI reports are sent over one uplink component carrier using at least one of a different cyclic shift and resource block number.

14. The mobile station as set forth in claim 12, wherein multiple antenna are utilized to transit the jointly encoded CQI reports and wherein each of the multiple antenna corresponds to a signal transmitted on a separate PUCCH resource.

15. For use in a wireless communication network, a mobile station capable of communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network, said mobile station comprising:

at least one transmit antenna; and

a transmitter configured to communicate with the at least one base station via a plurality of downlink component carriers and at least one uplink component carrier, wherein the transmitter is configured transmit data and a channel quality index (CQI) report for a corresponding downlink component carrier in the at least one uplink component carrier and the transmission is via one of;

a plurality of uplink component carriers when the transmitter includes a plurality of power amplifiers; and

a first uplink component carrier in a first subframe and a second uplink component carrier in a second subframe when the transmitter includes one power amplifier.

16. The mobile station as set forth in claim 15, wherein the mobile station includes at least two transmit antenna, and wherein the transmitter is configured to transmit a first component carrier over a first antenna and a second component carrier over a second antenna.

17. The mobile station as set forth in claim 15, wherein the transmitter is configured to transmit a subset of component carriers over each antenna.

18. For use in a wireless communication network, a mobile station capable of communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network, said mobile station comprising:

at least one transmit antenna;

a transmitter configured to communicate with the at least one base station via a plurality of uplink component carriers and at least one downlink component carrier, wherein the transmitter is configured to transmit data and a channel quality index (CQI) report for a corresponding downlink component carrier in the at least one uplink component carrier; and

a receiver configured to receive a transmit power control (TPC) command message jointly encoding a plurality of TPC fields, wherein each of the plurality of TPC fields is configured by a higher layer signaling to associate with at least one of the plurality of uplink component carriers.

19. The mobile station as set forth in claim 18, wherein the association is an uplink component carrier specific association, wherein each of a multiple of the plurality of TPC fields associates with one of the plurality of uplink component carriers.

20. The mobile station as set forth in claim 18, wherein the association is an uplink component carrier common association, wherein one of the plurality of TPC fields associates with all of the plurality of uplink component carriers.

21. The mobile station as set forth in claim 18, wherein the TPC command message is one of a DCI Format 3 and DCI Format 3A in accordance to a 3GPP Technical Specification 36.212.

22. For use in a wireless communication network, a method for communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network, the communication via a plurality of downlink component carriers and at least one uplink component carrier, the method comprising:

transmitting at least one periodic Physical Uplink Control Channel (PUCCH) channel quality index (CQI) report for a downlink component carrier in the at least one uplink component carrier, wherein the periods for the at least one PUCCH CQI report are the same for all uplink component carriers, and wherein a first PUCCH CQI for a first downlink component carrier is carried over a first uplink component carrier.

23. The method as set forth in claim 22, wherein a number of uplink component carriers equals a number of downlink component carriers, and wherein transmitting comprises:

transmitting the CQI report such that each uplink component carrier carries a CQI corresponding to a respective downlink component carrier.

24. The method as set forth in claim 23, wherein the CQI reporting mode comprises an offset mode, the method further comprising:

inserting a timing offset into at least one CQI report such that a first CQI is transmitted in a different subframe than a second CQI.

25. The method as set forth in claim 24, wherein when a minimum period among all PUCCH CQI reports is P, a period of the at least one PUCCH CQI report is N*P, where N is an integer, and wherein the offset varies from 0 to P−

1.

26. The method as set forth in claim 22, wherein the CQI reporting mode comprises a hopping mode, and wherein transmitting comprises:

transmitting the first PUCCH CQI report for the first downlink component carrier over the first uplink component carrier in a first subframe and over a second uplink component carrier in a subsequent subframe.

27. The method as set forth in claim 26, further comprising:

inserting a timing offset into at least one CQI report such that the first PUCCH CQI is transmitted in a different subframe than a second PUCCH CQI report for a second downlink component carrier.

28. For use in a wireless communication network, a method for communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network, the communication via a plurality of downlink component carriers and at least one uplink component carrier, the method comprising:

transmitting a channel quality index (CQI) report for a corresponding downlink component carrier in the at least one uplink component carrier, wherein a number of uplink component carriers is less than a number of downlink component carriers and wherein transmitting the CQI report corresponding to a subset of the downlink component carriers comprises transmitting at least two CQI reports corresponding to the set of downlink component carriers over one uplink component carrier.

29. The method as set forth in claim 28, wherein transmitting further comprises:

multiplexing the at least two CQI reports on a different set of resources; and

transmitting the multiplexed CQI reports in a subframe of at least one uplink component carrier.

30. The method as set forth in claim 28, wherein transmitting further comprises:

transmitting a first of at least two CQI reports in a first subframe and a second of the at least two CQI reports in a second subframe.

31. The method as set forth in claim 28, wherein transmitting further comprises selecting, via one of a UE-specific higher layer signaling and a cell-specific broadcast signal, a CQI reporting mode of one of:

sending a first of at least two CQI reports in a first subframe and a second of the at least two CQI reports in a second subframe; and

multiplexing the at least two CQI reports on a different set of resources and transmitting the multiplexed CQI reports in a subframe of at least one uplink carrier.

32. The method as set forth in claim 31, wherein the CQI reporting mode further comprises at least one of:

a user equipment specific message in an uplink scheduling assignment grant wherein each transmit power control (TPC) corresponds to one component carrier for the mobile station; and

a component carrier specific message in a common command wherein at least one TPC corresponds to all component carriers.

33. The method as set forth in claim 28, further comprising jointly encoding a plurality of the CQI reports across multiple component carriers;

and

transmitting the jointly encoded CQI reports over an enlarged payload, the enlarged payload comprising a plurality of uplink PUCCH resources.

34. The method as set forth in claim 33, further comprising sending at least two PUCCH CQI reports over one uplink component carrier using at least one of a different cyclic shift and resource block number.

35. The method as set forth in claim 33, further comprising utilizing multiple antenna to transit the jointly encoded CQI reports and wherein each of the multiple antenna corresponds to a signal transmitted on a separate PUCCH resource.

36. For use in a wireless communication network, a method for communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network, the communication via a plurality of downlink component carriers and at least one uplink component carrier, the method comprising:

transmitting, by a transmitter, data and a channel quality index (CQI) report for a corresponding downlink component carrier in the at least one uplink component carrier and wherein transmitting comprises one of;

transmitting via a plurality of uplink component carriers when the transmitter includes a plurality of power amplifiers; and

transmitting via a first uplink component carrier in a first subframe and a second uplink component carrier in a second subframe when the transmitter includes one power amplifier.

37. The method as set forth in claim 36, wherein the mobile station includes at least two transmit antenna, and wherein transmitting comprises transmitting a first component carrier over a first antenna and a second component carrier over a second antenna.

38. The method as set forth in claim 36, wherein transmitting comprises transmitting a subset of component carriers over each antenna.

39. For use in a wireless communication network, a method for communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network, the communication via a plurality of downlink component carriers and at least one uplink component carrier, the method comprising:

transmitting, by a transmitter, data and a channel quality index (CQI) report for a corresponding downlink component carrier in the at least one uplink component carrier; and

receiving, by a receiver, a transmit power control (TPC) command message jointly encoding a plurality of TPC fields, wherein each of the plurality of TPC fields is configured by a higher layer signaling to associate with at least one of the plurality of uplink component carriers.

40. The method as set forth in claim 39, wherein the association is an uplink component carrier specific association, wherein each of a multiple of the plurality of TPC fields associates with one of the plurality of uplink component carriers.

41. The method as set forth in claim 39, wherein the association is an uplink component carrier common association, wherein one of the plurality of TPC fields associate with all of the plurality of uplink component carriers.

42. The method as set forth in claim 39, wherein the TPC command message is one of a DCI Format 3 and DCI Format 3A in accordance to a 3GPP Technical Specification 36.212.