COMMUNICATION SYSTEM, MOBILE STATION DEVICE, BASE STATION DEVICE, RADIO TRANSMISSION CONTROL METHOD, AND INTEGRATED CIRCUIT

Title:

COMMUNICATION SYSTEM, MOBILE STATION DEVICE, BASE STATION DEVICE, RADIO TRANSMISSION CONTROL METHOD, AND INTEGRATED CIRCUIT

Document Type and Number:

WIPO Patent Application WO/2012/086769

Kind Code:

A1

Abstract:

Provided is a communication system in which mobile station devices detect radio link failures in secondary cells, such that radio link failures in secondary cells can be efficiently detected. Also provided are a mobile station device, base station device, radio transmission control method and integrated circuit. The base station device sets control parameters for the purpose of management of radio link conditions of a first cell and a second cell with respect to a mobile station device. A mobile station device has a first layer for the detection of radio link failures of the first cell, and a second layer for the detection of radio link failures of the second cell. If an occurrence of radio link failure in the second cell is detected on the basis of information for the purpose of synchronization assessment relating to the detection of radio link failure notified to the second layer, the second layer terminates uplink transmission of the second cell by the second layer. If the recovery of radio link failure of the second cell is detected after detection of occurrence of radio link failure of the second cell, the second layer resumes uplink transmission of the second cell by the second layer.

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Inventors:

UEMURA KATSUNARI
TSUBOI HIDEKAZU

Application Number:

PCT/JP2011/079848

Publication Date:

June 28, 2012

Filing Date:

December 22, 2011

Export Citation:

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Assignee:

SHARP KK (JP)
UEMURA KATSUNARI
TSUBOI HIDEKAZU

International Classes:

H04W24/04; H04W36/00; H04W56/00

Domestic Patent References:

WO2010084688A1

2010-07-29

Other References:

NTT DOCOMO: "Way forward on Scell Radio Link monitoring", 3GPP TSG-RAN WG4 #56 R4-103433, 27 August 2010 (2010-08-27)
SAMSUNG: "Component carrier failure and radio link failure", 3GPP TSG RAN WG2#69 R2-101041, 26 February 2010 (2010-02-26)

Attorney, Agent or Firm:

FUJIMOTO Eisuke et al. (JP)
Eisuke Fujimoto (JP)

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