EPDCCH resource and quasi-co-location management in LTE

Patent metadata

Field	Value
Publication number	US-9521664-B2
Application number	US-201314021980-A
Country	US
Kind code	B2
Filing date	Sep 9, 2013
Priority date	Nov 2, 2012
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

A method, an apparatus, and a computer program product for wireless communication are provided. In an aspect, the apparatus may receive a set of configurations for an EPDCCH that are tied to a set of configurations received for a PDSCH. The apparatus may then receive and process the EPDCCH based on at least one configuration from the set of configurations for the EPDCCH. In another aspect, the apparatus may determine at least a first and second resource set configured for a control channel and may determine a common set of aggregation levels for the first and second resource sets. The apparatus may further determine first rate-matching parameters for the first resource set and second rate-matching parameters for the second resource set, and may process the control channel using the common set of aggregation levels and the first and second rate-matching parameters.

First claim

What is claimed is:

1. A method of wireless communication, comprising:
receiving a first set of configurations for a physical downlink shared channel (PDSCH), each configuration in the first set of configurations defining at least one of a starting symbol, rate-matching information, or a quasi-co-location (QCL) indication;
receiving a second set of configurations for an enhanced physical downlink control channel (EPDCCH), the second set of configurations corresponding to a subset from among the first set of configurations and the second set of configurations being indicated by reference to a subset of configurations from among the first set of configurations, wherein each configuration in the second set of configurations corresponds to at least one of:
a quasi-co-location (QCL) indication parameter for the EPDCCH,
a starting symbol parameter for the EPDCCH, or
a rate matching parameter for the EPDCCH,
wherein for each of the second set of configurations, the QCL indication parameter for the EPDCCH, the starting symbol parameter for the EPDCCH, and the rate matching parameter for the EPDCCH is based on a PDSCH configuration from the first set of configurations;
receiving the EPDCCH; and
processing the EPDCCH based on at least one configuration from the second set of configurations.

2. The method of claim 1 , wherein:
the second set of configurations includes a first EPDCCH configuration and a second EPDCCH configuration,
the received EPDCCH is received on a first resource set and a second resource set,
the first EPDCCH configuration is defined for processing the EPDCCH on the first resource set, and
the second EPDCCH configuration is defined for processing the EPDCCH on the second resource set.

3. The method of claim 2 , wherein the first set of configurations includes four PDSCH configurations and the second set of configurations correspond to includes two EPDCCH configurations that are a subset from among the four PDSCH configurations.

4. The method of claim 1 , wherein the second set of configurations is selected from the first set of configurations based on a radio resource control (RRC) configuration.

5. The method of claim 4 , wherein receiving the second set of configurations includes receiving an indicator identifying a QCL configuration parameter, and wherein the second set of configurations is selected from the first set of configurations using the indicator identifying the QCL configuration.

6. The method of claim 1 , wherein the PDSCH is implemented in a coordinated multipoint system.

7. The method of claim 1 , wherein the second set of configurations corresponds to the QCL indication parameter for the EPDCCH.

8. The method of claim 7 , wherein the QCL indication parameter comprises a QCL-Channel State Information (CSI)-Reference Signal (RS)-Index for the EPDCCH.

9. The method of claim 1 , wherein the second set of configurations corresponds to the starting symbol parameter for the EPDCCH.

10. The method of claim 1 , wherein the second set of configurations corresponds to the rate matching parameter for the EPDCCH.

11. The method of claim 1 , wherein each configuration in the second set of configurations corresponds to the QCL indication parameter for the EPDCCH, the starting symbol parameter for the EPDCCH, and the rate matching parameter for the EPDCCH.

12. The method of claim 1 , wherein processing the EPDCCH based on at least one configuration from the second set of configurations includes determining an EPDCCH resource element (RE) mapping and an EPDCCH antenna port quasi co-location based on the at least one configuration from the second set of configurations.

13. The method of claim 1 , wherein the first set of configurations includes a plurality of PDSCH configurations and the second set of configurations includes one or more EPDCCH configurations that are a subset from among the plurality of PDSCH configurations.

14. A method of wireless communication, comprising:
configuring a first set of configurations for a physical downlink shared channel (PDSCH), each configuration in the first set of configurations defining at least one of a starting symbol, rate-matching information, or a quasi-co-location (QCL) indication;
configuring a second set of configurations for an enhanced physical downlink control channel (EPDCCH), the second set of configurations corresponding to a subset from among the first set of configurations and the second set of configurations being indicated by reference to a subset of configurations from among the first set of configurations, wherein each configuration in the second set of configurations corresponds to at least one of:
a quasi-co-location (QCL) indication parameter for the EPDCCH,
a starting symbol parameter for the EPDCCH, or
a rate matching parameter for the EPDCCH,
wherein for each of the second set of configurations, the QCL indication parameter for the EPDCCH, the starting symbol parameter for the EPDCCH, and the rate matching parameter for the EPDCCH is based on a PDSCH configuration from the first set of configurations;
transmitting the first set of configurations for the PDSCH and the second set of configurations for the EPDCCH; and
transmitting the EPDCCH.

15. The method of claim 14 , wherein:
the second set of configurations includes a first EPDCCH configuration and a second EPDCCH configuration,
the transmitted EPDCCH is transmitted on a first resource set and a second resource set,
the first EPDCCH configuration is defined for processing the EPDCCH on the first resource set, and
the second EPDCCH configuration is defined for processing the EPDCCH on the second resource set.

16. The method of claim 15 , wherein the first set of configurations includes four PDSCH configurations and the second set of configurations includes two EPDCCH configurations that are a subset from among the four PDSCH configurations.

17. The method of claim 14 , wherein the second set of configurations is selected from the first of configurations based on a radio resource control (RRC) configuration.

18. The method of claim 17 , wherein the second set of configurations includes an indicator identifying a quasi-co-location configuration.

19. The method of claim 14 , wherein the PDSCH is implemented in a coordinated multipoint system.

20. The method of claim 14 , wherein the second set of configurations corresponds to the QCL indication parameter for the EPDCCH.

21. The method of claim 20 , wherein the QCL indication parameter comprises a QCL-Channel State Information (CSI)-Reference Signal (RS)-Index for the EPDCCH.

22. The method of claim 14 , wherein the second set of configurations corresponds to the starting symbol parameter for the EPDCCH.

23. The method of claim 14 , wherein the second set of configurations corresponds to the rate matching parameter for the EPDCCH.

24. The method of claim 14 , wherein the second set of configurations corresponds to the QCL indication parameter for the EPDCCH, the starting symbol parameter for the EPDCCH, and the rate matching parameter for the EPDCCH.

25. The method of claim 14 , wherein the first set of configurations includes a plurality of PDSCH configurations and the second set of configurations includes one or more EPDCCH configurations that are a subset from among the plurality of PDSCH configurations.

26. An apparatus of wireless communication, comprising:
means for receiving a first set of con

Assignees

• Qualcomm Inc

Inventors

• Chen Wanshi
• Geirhofer Stefan
• Gaal Peter
• Xu Hao
• Luo Tao

Classifications

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04L5/0035 Primary

  Resource allocation in a cooperative multipoint environment · CPC title

• H04W72/044

  based on the type of the allocated resource · CPC title

• H04L5/001

  the frequencies being arranged in component carriers · CPC title

• H04L25/0204

  of multiple channels · CPC title