ANTENNA PORT MANAGEMENT FOR LOCALIZED ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL TRANSMISSIONS

• US 20140198720A1
• Filed: 01/17/2013
• Published: 07/17/2014
• Est. Priority Date: 01/17/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gaal, Peter, Chen, Wanshi
• Granted Patent: US 9,088,974 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• 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 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/04 Wireless resource allocation

Abstract

Methods, systems, and devices are described for managing wireless communications. A first decoding candidate and a second decoding candidate are identified from a plurality of decoding candidates for a localized enhanced Physical Downlink Control Channel (EPDCCH) transmission. A first antenna port is identified from a set of antenna ports for the first decoding candidate. A second antenna port is identified from the set of antenna ports for the second decoding candidate. The second antenna port is different from the first antenna port. The localized EPDCCH is decoded based at least on the first and second decoding candidates and the identified first and second antenna ports.

Claims

1. A method for managing wireless communications, comprising:

identifying a first decoding candidate and a second decoding candidate from a plurality of decoding candidates for a localized enhanced Physical Downlink Control Channel (EPDCCH) transmission;

identifying a first antenna port from a set of antenna ports for the first decoding candidate;

identifying a second antenna port from the set of antenna ports for the second decoding candidate, the second antenna port being different from the first antenna port; and

decoding the localized EPDCCH based at least on the first and second decoding candidates and the identified first and second antenna ports.

2. The method of claim 1, wherein the first decoding candidate and the second decoding candidate are located in a same pair of Physical Resource Blocks (PRBs).

3. The method of claim 1, wherein each of the plurality of the decoding candidates is associated with one or more enhanced control channel elements (ECCEs).

4. The method of claim 3, wherein the identifying of an antenna port for a decoding candidate is based at least in part on a starting ECCE associated with the decoding candidate.

5. The method of claim 3, wherein the first decoding candidate and the second decoding candidate are of a same aggregation level, an aggregation level comprising an integer number of ECCEs.

6. A device configured to manage wireless communications, comprising:

a processor;

a memory; and

instructions stored in the memory, the instructions being executable by the processor to;

identify a first decoding candidate and a second decoding candidate from a plurality of decoding candidates for a localized enhanced Physical Downlink Control Channel (EPDCCH) transmission;

identify a first antenna port from a set of antenna ports for the first decoding candidate;

identify a second antenna port from the set of antenna ports for the second decoding candidate, the second antenna port being different from the first antenna port; and

decode the localized EPDCCH based at least on the first and second decoding candidates and the identified first and second antenna ports.

7. The device of claim 6, wherein the first decoding candidate and the second decoding candidate are located in a same pair of Physical Resource Blocks (PRBs).

8. The device of claim 6, wherein each of the plurality of the decoding candidates is associated with one or more enhanced control channel elements (ECCEs).

9. The device of claim 8, wherein the identifying of an antenna port for a decoding candidate is based at least in part on a starting ECCE associated with the decoding candidate.

10. The device of claim 8, wherein the first decoding candidate and the second decoding candidate are of a same aggregation level, an aggregation level comprising an integer number of ECCEs.

11. An apparatus configured to manage wireless communications, comprising:

means for identifying a first decoding candidate and a second decoding candidate from a plurality of decoding candidates for a localized enhanced Physical Downlink Control Channel (EPDCCH) transmission;

means for identifying a first antenna port from a set of antenna ports for the first decoding candidate;

means for identifying a second antenna port from the set of antenna ports for the second decoding candidate, the second antenna port being different from the first antenna port; and

means for decoding the localized EPDCCH based at least on the first and second decoding candidates and the identified first and second antenna ports.

12. The apparatus of claim 11, wherein the first decoding candidate and the second decoding candidate are located in a same pair of Physical Resource Blocks (PRBs).

13. The apparatus of claim 11, wherein each of the plurality of the decoding candidates is associated with one or more enhanced control channel elements (ECCEs).

14. The apparatus of claim 13, wherein the identifying of an antenna port for a decoding candidate is based at least in part on a starting ECCE associated with the decoding candidate.

15. The apparatus of claim 13, wherein the first decoding candidate and the second decoding candidate are of a same aggregation level, an aggregation level comprising an integer number of ECCEs.

16. A computer program product for managing wireless communications, the computer program product comprising a non-transitory computer-readable medium storing instructions executable by a processor to:

identify a first decoding candidate and a second decoding candidate from a plurality of decoding candidates for a localized enhanced Physical Downlink Control Channel (EPDCCH) transmission;

identify a first antenna port from a set of antenna ports for the first decoding candidate;

identify a second antenna port from the set of antenna ports for the second decoding candidate, the second antenna port being different from the first antenna port; and

decode the localized EPDCCH based at least on the first and second decoding candidates and the identified first and second antenna ports.

17. The computer program product of claim 16, wherein the first decoding candidate and the second decoding candidate are located in a same pair of Physical Resource Blocks (PRBs).

18. The computer program product of claim 16, wherein each of the plurality of the decoding candidates is associated with one or more enhanced control channel elements (ECCEs).

19. The computer program product of claim 18, wherein the identifying of an antenna port for a decoding candidate is based at least in part on a starting ECCE associated with the decoding candidate.

20. The computer program product of claim 18, wherein the first decoding candidate and the second decoding candidate are of a same aggregation level, an aggregation level comprising an integer number of ECCEs.