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Title:
MOBILE STATION APPARATUS, BASE STATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD, INTEGRATED CIRCUIT, AND MOBILE STATION APPARATUS CONTROL PROGRAM
Document Type and Number:
WIPO Patent Application WO/2011/118306
Kind Code:
A1
Abstract:
When a mobile station apparatus, which can use a plurality of frequency bands to connect with a base station apparatus, is to perform an uplink transmission, the mobile station apparatus selects an optimum one of combinations between the plurality of frequency bands and uplink transmission methods, thereby performing the uplink transmission. The mobile station apparatus, which is operative to group a plurality of cells together to connect to a base station apparatus and make a request to the base station apparatus for an uplink radio resource required to transmit uplink data, selects, based on a first condition, from among the plurality of cells, an uplink to make the radio resource request using a random access channel, and selects, based on a second condition, either the transmission of the radio resource request using the random access channel or the transmission of uplink data using an uplink radio resource common to another mobile station apparatus.

Inventors:
UEMURA KATSUNARI
Application Number:
PCT/JP2011/053634
Publication Date:
September 29, 2011
Filing Date:
February 21, 2011
Export Citation:
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Assignee:
SHARP KK (JP)
UEMURA KATSUNARI
International Classes:
H04W74/02; H04W72/12
Domestic Patent References:
WO2009154102A12009-12-23
Other References:
FUJITSU: "RACH for connected mode in carrier aggregation", 3GPP TSG-RAN WG2 MEETING #69, R2-101541, 22 February 2010 (2010-02-22), XP050421882
SAMSUNG: "UL CC selection for RACH", 3GPP TSG RAN WG2 #69, R2-101039, 22 February 2010 (2010-02-22), XP050421735
CATT: "Impact of carrier aggregation on MAC layer", 3GPP TSG-RAN WG2 #67BIS, R2-095484, 12 October 2009 (2009-10-12), XP050390040
INTERDIGITAL: "RACH Procedures for Carrier Aggregation", 3GPP TSG-RAN WG2 MEETING #69, R2-101304, 22 February 2010 (2010-02-22), XP050421650
ALCATEL-LUCENT SHANGHAI BELL ET AL.: "PRACH transmissions in Carrier Aggregation", TSG-RAN WG2#69, R2-101388, 3GPP, 22 February 2010 (2010-02-22), XP050421808
CATT: "Consideration on RACH in CA", 3GPP TSG RAN WG2 MEETING #69, R2-101058, 22 February 2010 (2010-02-22), XP050421372
See also references of EP 2552170A4
Attorney, Agent or Firm:
FUKUCHI TAKEO (JP)
Fukuchi Takeo (JP)
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Claims: