INDICATING DYNAMIC ALLOCATION OF COMPONENT CARRIERS IN MULTI-COMPONENT CARRIER SYSTEMS

• US 20100322158A1
• Filed: 06/22/2009
• Published: 12/23/2010
• Est. Priority Date: 06/22/2009
• Status: Active Grant

• Current Assignee: WSOU Investments, LLC (WSOU Holdings, LLC)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: CHENG, FENG-CHEN, LEE, JUNG A.
• Granted Patent: US 8,432,859 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0046 Code rate detection or code type detection H04L1/0038 takes precedence; detection of the data rate H04L25/0262; for packet format H04L1/0091
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated

Abstract

The present invention provides a method involving an access network and user equipment that supports communication over an air interface using a plurality of component carriers. The method includes transmitting information indicating that a first component carrier is an anchor carrier for the user equipment. The information is transmitted from the access network in a first field of the first component carrier, which selected from the plurality of component carriers. The method also includes transmitting information indicating that one or more second component carriers is allocated as a non-anchor carrier for the user equipment.

Claims

1. A method involving an access network and at least one user equipment that support communication over an air interface using a plurality of component carriers, comprising:

transmitting, from the access network, in a first field of a first component carrier selected from the plurality of component carriers, information indicating that the first component carrier is an anchor carrier for said at least one user equipment; and

transmitting, from the access network, in a second field of the first component carrier, information indicating that at least one second component carrier selected from the plurality of component carriers is allocated as at least one non-anchor carrier for said at least one user equipment.

2. The method of claim 1, wherein transmitting the information indicating that the first component carrier is the anchor carrier comprises transmitting information that can be blindly decoded by said at least one user equipment.

3. The method of claim 2, wherein transmitting the information indicating that said at least one second component carrier is said at least one non-anchor carrier comprises transmitting information that allows said at least one user equipment to decode said at least one second component carrier.

4. The method of claim 1, wherein transmitting information in the second field of the first component carrier comprises transmitting a second field having a number of bits sufficient to indicate each available combination of the anchor carrier and said at least one non-anchor carrier that can be selected from the plurality of component carriers.

5. The method of claim 1, wherein transmitting information in the first and second fields comprises transmitting information indicating the anchor carrier and said at least one non-anchor carrier for an associated subframe.

6. The method of claim 5, comprising dynamically changing the information transmitted in the first and second fields to indicate changes in at least one of the anchor carrier and said at least one non-anchor carrier over a plurality of subframes.

7. The method of claim 1, wherein transmitting information in the first and second fields comprises transmitting information indicating the anchor carrier and said at least one non-anchor carrier that are allocated to support physical downlink control channels for said at least one user equipment.

8. The method of claim 1, wherein transmitting information in the first and second fields comprises transmitting information indicating a scheduling grant allocating physical uplink shared channels supported by the anchor carrier and said at least one non-anchor carrier to said at least one user equipment.

9. The method of claim 8, comprising transmitting information indicating at least one physical uplink control channel allocated to said at least one user equipment.

10. The method of claim 9, wherein transmitting said information indicating said at least one physical uplink control channel comprises transmitting said information using radio resource control signaling.

11. The method of claim 9, wherein transmitting said information indicating said at least one physical uplink control channel comprises transmitting said information using at least one physical downlink control channel to said at least one user equipment.

12. A method involving an access network and at least one user equipment that support communication over an air interface using a plurality of component carriers, comprising:

receiving, at said at least one user equipment, in a first field of a first component carrier selected from the plurality of component carriers, information indicating that the first component carrier is an anchor carrier for said at least one user equipment; and

receiving, at said at least one user equipment, in a second field of the first component carrier, information indicating that at least one second component carrier selected from the plurality of component carriers is allocated as at least one non-anchor carrier for said at least one user equipment.

13. The method of claim 12, comprising blindly decoding, at said at least one user equipment, the first component carrier to determine that the first component carrier is the anchor carrier using the decoded information in the first field of the first component carrier.

14. The method of claim 13, comprising decoding, at said at least one user equipment, said at least one second component carrier using said information in the second field to identify said at least one second component carrier prior to decoding.

15. The method of claim 12, wherein receiving information in the second field of the first component carrier comprises receiving information in a second field having a number of bits sufficient to indicate each available combination of the anchor carrier and said at least one non-anchor carrier that can be selected from the plurality of component carriers.

16. The method of claim 12, wherein receiving information in the first and second fields comprises receiving information indicating the anchor carrier and said at least one non-anchor carrier for an associated subframe.

17. The method of claim 16, comprising receiving dynamically changing information transmitted in the first and second fields to indicate changes in at least one of the anchor carrier and said at least one non-anchor carrier over a plurality of subframes.

18. The method of claim 12, wherein receiving information in the first and second fields comprises receiving information indicating the anchor carrier and said at least one non-anchor carrier that are allocated to support physical downlink control channels for said at least one user equipment.

19. The method of claim 12, wherein receiving information in the first and second fields comprises receiving information indicating a scheduling grant allocating physical uplink shared channels supported by the anchor carrier and said at least one non-anchor carrier to said at least one user equipment.

20. The method of claim 19, comprising receiving information indicating at least one physical uplink control channel allocated to said at least one user equipment.

21. The method of claim 20, wherein receiving said information indicating said at least one physical uplink control channel comprises receiving radio resource control signaling indicating said information.

22. The method of claim 20, wherein receiving said information indicating said at least one physical uplink control channel comprises receiving said information over at least one physical downlink control channel between the access network and said at least one user equipment.

23. The method of claim 12, comprising using the information in the first and second field to configure said at least one user equipment for communication over the anchor carrier and said at least one non-anchor carrier.