US 10,433,340 B2Granted

Base station apparatus, mobile station apparatus, and communication method

AssigneeSharp Kabushiki Kaisha

InventorsYasuyuki Kato, Katsunari Uemura, Shoichi Suzuki

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Abstract

A mobile station (MS) obtains a parameter, performs transmission of a preamble, and sets a counter incremented based on transmission of the preamble. The MS is able to indicate a random access problem corresponding to one transmission timing cell group in a case where the counter reaches the parameter+1 and the transmission of the preamble is performed on the one transmission timing cell group, where the one transmission timing cell group being one of the plurality of transmission timing cell groups, and the MS is able to not indicate a random access problem corresponding to another transmission timing cell group in a case where the counter reaches the parameter+1 and the transmission of the preamble is performed on the another transmission timing cell group, where the another transmission timing cell group being one of the plurality of transmission timing cell groups.

Claims3

Dependent claims

A mobile station apparatus applied to a mobile communication system in which a plurality of cells are allocated to the mobile station apparatus, the plurality of cells grouped into a plurality of cell groups, the mobile station apparatus comprising:

control circuitry configured to and/or programmed to perform both of a contention based random access procedure to a base station apparatus and a non-contention based random access procedure to the base station apparatus, wherein both of the contention based random access procedure and the non-contention based random access procedure corresponds to at least one of the cells which belongs to a first cell group of the plurality of the cell groups,
the control circuitry further configured to and/or programmed to perform a non-contention based random access procedure to the base station apparatus, wherein the non-contention based random access procedure corresponds to at least one of the cells belonging to a second cell group other than the first cell group,
the control circuitry further configured to and/or programmed to:
indicate a random access problem corresponding to the first cell group in a case where a number of transmissions of a random access preamble exceeds a maximum number of retransmissions, and
not indicate a random access problem corresponding to the second cell group in a case where the number of transmissions of a random access preamble exceeds the maximum number of retransmissions.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/341,734Filed 2 Nov 2016 · continuation
Priority: JP 2010-1779186 Aug 2010
Published: US 2017/0079072 A116 Mar 2017
Granted: 1 Oct 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04W 74/002
Wireless channel access: transmission of channel access control information
H04W 72/0446
Based on the type of the allocated resource: resources in time domain, e.g. slots or frames
H04W 72/21
Control channels or signalling for resource management: in the uplink direction of a wireless link, i.e. towards the network
H04W 72/23
Control channels or signalling for resource management: in the downlink direction of a wireless link, i.e. towards a terminal

Family

PCT/JP2011/066740Parent of this continuation · filed 22 Jul 2011
Application14/754,004Parent of this continuation · filed 29 Jun 2015
US 9,094,989 B2Parent of this continuation · filed 28 Jul 2015
US 2017/0079072 A1Pre-grant publication · published 16 Mar 2017
US 9,538,556 B2Parent of this continuation
Application13/814,424Parent of this continuation
US 2013/0215848 A1Published application
US 2015/0319785 A1Published application
US 10,433,340 B2This patent

From the US filing history. Foreign family members aren’t listed.