Resource allocation in wireless communication systems

• US 8,934,417 B2
• Filed: 03/16/2009
• Issued: 01/13/2015
• Est. Priority Date: 03/16/2009
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Inventors: Nory, Ravikiran, Kuchibhotla, Ravi, Love, Robert T., Nangia, Vijay, Nimbalker, Ajit, Stewart, Kenneth A., Zhuang, Xiangyang
• Primary Examiner(s): Shah, Chirag
• Assistant Examiner(s): REDDIVALAM, SRINIVASA R
• Application Number:
  US12/405,046
• Publication Number:
  US 20100232373A1
• Time in Patent Office: 2,129 Days
• Field of Search: None
• US Class Current: 370/329
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A wireless communication terminal including a controller coupled to a transceiver, configured to receive a first and second control messages on an anchor carrier is disclosed. The first control message includes a resource assignment for the anchor carrier and the second control message is associated with a set of component carriers that are distinct from the anchor carrier. The controller determines a resource assignment for at least one component carrier in the set of component carriers using both the first and the second control messages.

Claims

1. A wireless communication terminal comprising:

a wireless transceiver; and

a controller coupled to the wireless transceiver, the controller configuring the transceiver to receive a first control message on an anchor carrier;

the controller configured to determine a Physical Downlink Shared Channel (“

PDSCH”

) resource assignment for the anchor carrier using a first Downlink Control Information (“

DCI”

) in the first control message;

the controller configuring the transceiver to receive a second control message on the anchor carrier, the second control message associated with a set of component carriers, the set of component carriers are distinct from the anchor carrier; and

the controller configured to determine a PDSCH resource assignment on each component carrier in the set of component carriers using both the first DCI in the first control message and a second DCI in the second control message.

2. The terminal of claim 1 wherein the controller is configured to determine a resource assignment for receiving the PDSCH on at least one component carrier in the set of component carriers using both the first and the second control messages based on bit map information.

3. The terminal of claim 2, the control message includes the bit map information.

4. The terminal of claim 1, the first control message is a first PDCCH message and the second control message is a second PDCCH message.

5. The terminal of claim 4, the first control message is a PDCCH message selected from a group of downlink control information [DCI] formats comprising:

[0];

[1];

[1A];

[1B];

[1C];

[1D];

[2] or [2A].

6. The terminal of claim 1, the second control message includes resource assignment type information indicating how to interpret the second control message.

7. The terminal of claim 1:

wherein the second control message includes a resource assignment offset for receiving the PDSCH on at least one component carrier in the set of component carriers; and

wherein the controller is configured to determine a resource assignment for receiving the PDSCH on the at least one component carrier in the set of component carriers using the resource assignment offset in the second control message.

8. The terminal of claim 1:

wherein the second control message includes a modulation coding scheme offset for at least one component carrier in the set of component carriers; and

wherein the controller is configured to determine a resource assignment for receiving the PDSCH on the at least one component carrier in the set of component carriers using the modulation coding scheme offset in the second control message.

9. The terminal of claim 1, the controller configured to cause the transceiver to monitor a PDCCH of component carriers activated by a configuration message.

10. The terminal of claim 9, wherein the configuration message is a long term bitmap.

11. A method in a wireless communication terminal, the method comprising:

receiving, at the terminal, a first control message on an anchor carrier;

determining a Physical Downlink Shared Channel (“

PDSCH”

) resource assignment for the anchor carrier using a first Downlink Control Information (“

DCI”

) in the first control message;

receiving a second control message on the anchor carrier, the second control message associated with a set of component carriers, wherein the set of component carriers are distinct from the anchor carrier; and

determining a PDSCH resource assignment on each component carrier in the set of component carriers using both the first DCI in the first control message and a second DCI in the second control message.

12. The method of claim 11 further comprising determining a resource assignment for receiving the PDSCH on at least one component carrier in the set of component carriers using both the first and the second control messages based on bit map information.

13. The method of claim 12, the control message includes the bit map information.

14. The method of claim 11, receiving the first and second control messages as separate first and second physical downlink control channel (PDCCH) messages.

15. The method of claim 14, receiving the first control message includes receiving a PDCCH message selected from a group of downlink control information formats comprising:

[0];

[1];

[1A];

[1B];

[1C];

[1D];

[2] or [2A].

16. The method of claim 11, wherein the second control message includes resource assignment type information indicating how to interpret the second control message.

17. The method of claim 11:

wherein the second control message includes a resource assignment offset for receiving the PDSCH on at least one component carrier in the set of component carriers;

the method further comprising determining a resource assignment for the at least one component carrier in the set of component carriers using the resource assignment offset in the second control message.

18. The method of claim 11:

wherein the second control message includes a modulation coding scheme offset for at least one component carrier in the set of component carriers;

the method further comprising determining a resource assignment for receiving the PDSCH on the at least one component carrier in the set of component carriers using the modulation coding scheme offset in the second control message.

19. The method of claim 11 further comprising:

receiving the second control message includes information for at least one component carrier, the information selected from a group comprising a hybrid automatic repeat request process identity, a new data indicator, and a redundancy version; and

determining a resource assignment for receiving the PDSCH on at least one component carrier in the set of component carriers using the information in the second control message.

20. The method of claim 11,

identifying the first control message for the anchor carrier using a first error detection mask,

identifying the second control message using a second error detection mask.

21. The method of claim 11, receiving a configuration message identifying the set of component carriers associated with the anchor carrier.

22. The method of claim 11 further comprising:

receiving a configuration message instructing a set of component carriers whose PDCCH messages are to be monitored; and

monitoring a PDCCH of the component carriers indicated in the configuration message.