Timing advance configuration for multiple uplink component carriers

US9402255B2 · kind B2 · utility

Assignee

• Panasonic Intellectual Property Corporation of America · US

Inventors

• Joachim Löhr · Wiesbaden, DE
• Christian Wengerter · Kleinheubach, DE
• Martin Feuersanger · Bremen, DE
• Takashi Tamura · Yokohama, JP
• Hidetoshi Suzuki · Tokyo, JP
• Takahisa Aoyama · Osaka, JP

Key dates

• Filing date: Aug 15, 2011
• Grant date: Jul 26, 2016
• Expiry date: Dec 3, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W56/0045
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

The invention relates methods for time aligning uplink transmissions by a mobile terminal in a mobile communication system, and to methods for performing a handover of a mobile terminal to a target aggregation access point. The invention is also providing apparatus and system for performing these methods, and computer readable media the instructions of which cause the apparatus and system to perform the methods described herein. In order to allow for aligning the timing of uplink transmissions on uplink component carriers, where different propagation delays are imposed on the transmissions on the uplink component carriers, the inventions suggests to time align the uplink component carriers based on a reference time alignment of a reference cell and a reception time difference or propagation delay difference between the downlink transmissions in the reference cell and the other radio cells, the uplink component carriers of which need to be time aligned.