Radio communication system and mobile station device

• US 8,553,675 B2
• Filed: 06/17/2010
• Issued: 10/08/2013
• Est. Priority Date: 08/08/2007
• Status: Active Grant

• Current Assignee: Ueran Technology LLC
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Yamada, Shohei, Kato, Yasuyuki
• Primary Examiner(s): Vu, Huy D.
• Assistant Examiner(s): Chery, Dady
• Application Number:
  US12/817,433
• Publication Number:
  US 20100246562A1
• Time in Patent Office: 1,209 Days
• Field of Search: 370/241, 370/328, 370/329, 370/336, 370/345, 370/349, 370/350, 370/503, 455/450
• US Class Current: 370/350
• CPC Class Codes: H04W 56/0005 synchronizing of arrival of multiple uplinks
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: H04W 56/0045 compensating for timing error by altering transmission time
• CPC Class Codes: H04W 56/005 compensating for timing error by adjustment in the receiver
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

A mobile station device transmits a random access preamble to a base station device and performs uplink timing alignment based on the synchronization timing deviation information included in a random access response which the base station device transmits in response to the transmitted random access preamble, wherein in an uplink synchronous status, the mobile station device does not perform uplink timing alignment based on synchronization timing deviation information included in a random access response, which is a response to a random access preamble whose preamble ID is randomly selected by the mobile station device.

Claims

1. A radio communication system, comprising:

a base station device; and

a mobile station device configured to transmit a random access preamble to the base station device and to receive a random access response transmitted from the base station device in response to the transmitted random access preamble, wherein

the base station device receives the random access preamble from the mobile station device and transmits the random access response to the mobile station device in response to the received random access preamble, and

wherein, in the mobile station device, when a subframe for transmitting a message scheduled by the random access response from the mobile station device overlaps with a subframe for transmitting uplink control information from the mobile station device, the mobile station device transmits the message scheduled by the random access response.

2. A mobile station device, comprising:

a transmission unit configured to transmit a random access preamble to a base station device; and

a reception unit configured to receive a random access response transmitted from the base station device in response to the transmitted random access preamble,

wherein when a subframe for transmitting a message scheduled by the random access response from the mobile station device overlaps with a subframe for transmitting uplink control information from the mobile station device, the mobile station device transmits the message scheduled by the random access response.

3. A processing method of a mobile station device, the method comprising:

transmitting a random access preamble to a base station device; and

receiving a random access response transmitted from the base station device in response to the transmitted random access preamble,

wherein when a subframe for transmitting a message scheduled by the random access response from the mobile station device overlaps with a subframe for transmitting uplink control information from the mobile station device, the mobile station device transmits the message scheduled by the random access response.