Title:
SYSTEMS AND METHODS FOR CARRIER AGGREGATION
Document Type and Number:
WIPO Patent Application WO/2015/008446
Kind Code:
A1
Abstract:
A User Equipment (UE) for performing carrier aggregation is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. The UE determines a duplex method of each serving cell for frequency-division duplexing (FDD) and time-division duplexing (TDD) carrier aggregation. At least one serving cell is a TDD cell and at least one serving cell is a FDD cell. The UE also determines physical downlink shared channel (PDSCH) Hybrid Automatic Repeat Request Acknowledgement/Negative Acknowledgement (HARQ-ACK) transmission timing for a serving cell. When a primary cell is a TDD cell, the PDSCH HARQ-ACK transmission timing for the serving cell is determined based on a downlink (DL) association set for the serving cell. The UE further sends PDSCH HARQ-ACK information based on the PDSCH HARQ-ACK transmission timing.
Inventors:
YIN ZHANPING
YAMADA SHOHEI
KOWALSKI JOHN MICHAEL
YAMADA SHOHEI
KOWALSKI JOHN MICHAEL
Application Number:
PCT/JP2014/003543
Publication Date:
January 22, 2015
Filing Date:
July 03, 2014
Export Citation:
Assignee:
SHARP KK (JP)
International Classes:
H04W72/04; H04W28/04; H04W72/12
Foreign References:
| US20130170406A1 | 2013-07-04 |
Other References:
NOKIA CORPORATION ET AL.: "Way forward on LTE TDD-FDD CA and TDD-FDD joint operation", 3GPP TSG-RAN MEETING #60 RP-130841, 14 July 2013 (2013-07-14), pages 1 - 2, Retrieved from the Internet
CMCC: "Consideration on general FDD/TDD joint operation for LTE", 3GPP TSG-RAN MEETING #60 RP-130696, 14 July 2013 (2013-07-14), pages 1 - 6, Retrieved from the Internet
LG ELECTRONICS: "HARQ timing for TDD-FDD carrier aggregation", 3GPP TSG-RAN WG1 MEETING #74BIS R1-134396, 11 October 2013 (2013-10-11), pages 1 - 6, Retrieved from the Internet
CMCC: "Consideration on general FDD/TDD joint operation for LTE", 3GPP TSG-RAN MEETING #60 RP-130696, 14 July 2013 (2013-07-14), pages 1 - 6, Retrieved from the Internet
LG ELECTRONICS: "HARQ timing for TDD-FDD carrier aggregation", 3GPP TSG-RAN WG1 MEETING #74BIS R1-134396, 11 October 2013 (2013-10-11), pages 1 - 6, Retrieved from the Internet
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (2-6 Tenjinbashi 2-chome Kita, Kita-ku, Osaka-sh, Osaka 41, JP)
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