- 专利标题： Wireless communication terminal device, wireless communication method and integrated circuit for controlling transmission power of sounding reference signal (SRS)
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申请号： US15206071申请日： 2016-07-08
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公开(公告)号： US09681390B2公开(公告)日： 2017-06-13
- 发明人: Kazuki Takeda , Akihiko Nishio
- 申请人： Sun Patent Trust
- 申请人地址： US NY New York
- 专利权人： Sun Patent Trust
- 当前专利权人： Sun Patent Trust
- 当前专利权人地址： US NY New York
- 代理机构： Seed Intellectual Property Law Group LLP
- 优先权： JP2012-171086 20120801
- 主分类号： H04J1/16
- IPC分类号： H04J1/16 ; H04J3/14 ; H04L12/26 ; H04W52/04 ; H04W16/32 ; H04W52/08 ; H04W52/32 ; H04W52/54 ; H04L5/00 ; H04W52/14 ; H04J11/00 ; H04W88/02 ; H04W88/12
摘要：
A radio terminal is provided that can provide a flexible transmission power control for an SRS without restrictions due to the transmission power control of a PUSCH, for the purpose of enabling use of an SRS for various purposes in a HetNet CoMP environment. The radio terminal receives a control signal including a transmission power control command (TPC command) to be applied to an aperiodic sounding reference signal (A-SRS), through a physical downlink control channel (PDCCH), updates a transmission power value of the A-SRS using the TPC command, and transmits the A-SRS using the updated transmission power value in accordance with a transmission request included in a control signal indicating assignment of a physical downlink data channel (PDSCH) or assignment of a physical uplink data channel (PUSCH).
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