Base station device, mobile station device, program, uplink synchronization requesting method, and synchronization-shift measurement signal transmitting method

Inactive Publication Date: 2009-12-24
YAMADA SHOHEI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0027]The base station device of the present invention allocates information indicative of an uplink synchronization request addressed to the mobile station device to a region in a radio frame where parameters used for s

Problems solved by technology

Since the base station device cannot receive the L2/L3 message due to the collision, the base station device cannot transmit a response.
This is because the uplink synchronization is lost, and therefore a transmission of the A

Method used

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  • Base station device, mobile station device, program, uplink synchronization requesting method, and synchronization-shift measurement signal transmitting method
  • Base station device, mobile station device, program, uplink synchronization requesting method, and synchronization-shift measurement signal transmitting method
  • Base station device, mobile station device, program, uplink synchronization requesting method, and synchronization-shift measurement signal transmitting method

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Embodiment Construction

[0069]Hereinafter, an embodiment of the present invention is explained with reference to accompanying drawings. A radio communication system of the embodiment includes a base station device and multiple mobile station devices, similarly to EUTRA. In the embodiment, an “uplink” indicates communication connection from the mobile station device to the base station device. Additionally, a “downlink” indicates a communication connection from the base station device to the mobile station device. The downlink of the embodiment includes the DPiCH, the DSCH, the downlink common control channel, the PDCCH (L1 / L2 (Layer 1 / Layer 2) control channel), and the DL-SCH. The uplink of the embodiment includes the UPiCH, the RACH, and the UL-SCH.

[0070]RACH is an uplink channel having a guard time. For this reason, even if a mobile station device transmits RACH to the base station device with which uplink timing synchronization is not maintained, and if a synchronization shift is within the guard time, ...

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Abstract

A base station device includes: a re-synchronization factor detector that detects an uplink re-synchronization factor of a mobile station device; a data controller that generates, when the re-synchronization factor detector detects the uplink re-synchronization factor, data in which information indicative of an uplink synchronization request addressed to the mobile station device is set to a region on a radio frame to which parameters to be used for synchronous communication with the mobile station device are to be set; and a transmitter that transmits data generated by the data controller.

Description

[0001]This application is a Divisional of co-pending application Ser. No. 12 / 527,680 filed on Aug. 18, 2009, which is a National Phase of PCT / JP2008 / 060706 filed on Jun. 11, 2008, and for which priority is claimed under 35 U.S.C. § 120; and these applications claim priority of Application No. JP2007-155289 filed in Japan on Jun. 12, 2007 under 35 U.S.C. § 119; the entire contents of all are hereby incorporated by reference.TECHNICAL FIELD[0002]The present invention relates to a base station device, a mobile station device, a program, an uplink synchronization requesting method, and a synchronization-shift measurement signal transmitting method. Particularly, the present invention relates to a mobile station device, a program, an uplink synchronization requesting method, and a synchronization-shift measurement signal transmitting method for uplink timing synchronization from the mobile station device to the base station device.[0003]Priority is claimed on Japanese Patent Application ...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W56/00H04W74/08H04W92/10
CPCH04W56/0005H04W56/0045H04L5/0053H04W74/08H04W92/10H04W56/0055H04W56/005H04W56/001H04W72/23H04W72/21
Inventor YAMADA, SHOHEIKATO, YASUYUKI
Owner YAMADA SHOHEI
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