Title:
UE, METHOD FOR APERIODIC SRS IN BASE STATION AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/144062
Kind Code:
A1
Abstract:
The present invention provides a UE, a method for an aperiodic SRS in a base station and a device. For a problem of a scheduling restriction of a traditional A-SRS in unlicensed spectrum communication, the present invention provides the method and apparatus for the A-SRS, wherein physical-layer signaling is used to indicate a sending frequency band of an SRS to implement flexible scheduling of the aperiodic SRS. As an embodiment, the number of antenna ports of the A-SRS is configured by high-layer signaling identified by a logical cell index. A physical resource occupied by the aperiodic SRS is configured by high-layer signaling identified by a carrier index. The logical cell index at different frameworks may correspond to different physical carriers. A scheme provided by the present invention enables the base station to dynamically trigger sending of the SRS on a non-scheduled carrier, thereby meeting a requirement of a DFS technology on an uplink CSI in unlicensed spectrum communication. In addition, the present invention reuses a DCI format in an existing LTE as much as possible and has good compatibility.
Inventors:
ZHANG XIAOBO (CN)
Application Number:
PCT/CN2015/075076
Publication Date:
October 01, 2015
Filing Date:
March 26, 2015
Export Citation:
Assignee:
SHANGHAI LANGBO COMM TECHNOLOGY COMPANY LTD (CN)
International Classes:
H04W72/12
Foreign References:
| CN103621130A | 2014-03-05 | |||
| CN101808409A | 2010-08-18 | |||
| CN103517456A | 2014-01-15 | |||
| CN103580840A | 2014-02-12 | |||
| CN102934382A | 2013-02-13 |
Attorney, Agent or Firm:
SHANGHAI HANGSOME INTELLECTUAL PROPERTY LTD. (CN)
上海汉声知识产权代理有限公司 (CN)
上海汉声知识产权代理有限公司 (CN)
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