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Base station device, mobile station device, mobile communication system, communication method, control program, and integrated circuit

A mobile communication system, integrated circuit technology, applied in the directions of synchronization devices, wireless communication, electrical components, etc., can solve the problems of increased random access preamble collisions, complex processing of mobile station devices, etc., and achieve good efficiency.

Active Publication Date: 2016-10-05
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a plurality of cells are assigned to one mobile station apparatus, if a plurality of random access processes are simultaneously performed for each cell, not only the processing of the mobile station apparatus becomes complicated, but also because one mobile station apparatus performs Collision of random access preambles between mobile station apparatuses increases due to multiple random access processes

Method used

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  • Base station device, mobile station device, mobile communication system, communication method, control program, and integrated circuit
  • Base station device, mobile station device, mobile communication system, communication method, control program, and integrated circuit
  • Base station device, mobile station device, mobile communication system, communication method, control program, and integrated circuit

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no. 1 Embodiment approach

[0080] [composition explanation]

[0081] figure 1 It is a diagram showing the configuration of the mobile station apparatus 1 according to the embodiment of the present invention. The mobile station apparatus 1 is composed of the following elements: a wireless unit 101, transmission processing units 103-1 to 103-5 (hereinafter, the transmission processing units 103-1 to 103-5 will be collectively referred to as the transmission processing unit 103), a reception processing unit 105-1 to 105-5 (the transmission processing units 105-1 to 105-5 are collectively referred to as the transmission processing unit 105 below), the transmission data control unit 107, the control data extraction unit 109, and the random access preamble generation unit 111. Transmission timing adjustment units 113-1 to 113-5 (the transmission timing adjustment units 113-1 to 113-5 are collectively referred to as the transmission timing adjustment unit 113 below), the control unit 115, and the scheduling u...

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Abstract

When the transmission timing from the mobile station apparatus differs for each cell, random access can be efficiently performed. The base station apparatus is used in a mobile communication system for performing random access from the mobile station apparatus to the base station apparatus, assigns a plurality of cells to the mobile station apparatus, groups cells with the same transmission timing in the mobile station apparatus, and performs The transmission timing determined for each of the groups is notified to the mobile station apparatus that grants random access to any cell included in the group, which will be used for granting the random access to any one of the cells included in the group. Information that the accessed cell performs random access is notified to the mobile station apparatus.

Description

technical field [0001] The present invention relates to a base station device, a mobile station device, a mobile communication system, a communication method, a control program, and an integrated circuit that efficiently perform random access. Background technique [0002] In 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project), the W-CDMA scheme is standardized as a 3rd generation cellular mobile communication system, and services are sequentially started. In addition, HSDPA, which further improves the communication speed, was also standardized and started service. [0003] On the other hand, in 3GPP, the standardization of the Evolved Universal Terrestrial Radio Access (Evolved Universal Terrestrial Radio Access, Evolved Universal Mobile Telecommunications System and Terrestrial Radio Access; hereinafter referred to as "EUTRA") is also in progress. As a downlink communication method of EUTRA, an OFDM (Orthogonal Frequency Division Multiplexing) me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04W74/08H04W72/54
CPCH04W74/002H04W74/0833H04W74/0838H04W72/21H04W72/23H04W72/0446
Inventor 加藤恭之上村克成铃木翔一
Owner SHARP KK
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