Mobile station apparatus and radio communicaltion method

A technology for mobile station and signal transmission, applied in wireless communication, selection device, multiplex communication, etc., which can solve the problems of interruption of communication lines and inability to significantly improve the receiving performance of mobile stations

Inactive Publication Date: 2002-08-21
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in hard handover, the advantage is that it can reduce the interference to the communication of other mobile stations, but the disadvantage is that the possibility of interruption of the communication line is high during handover, and the receiving performance of the mobile station cannot be significantly improved.

Method used

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  • Mobile station apparatus and radio communicaltion method
  • Mobile station apparatus and radio communicaltion method
  • Mobile station apparatus and radio communicaltion method

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Embodiment Construction

[0033] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0034] First, a case where handover is performed between cells will be described. FIG. 3 is a conceptual diagram of a cell of a wireless communication system including a mobile station device according to an embodiment of the present invention. This wireless communication system includes a mobile station 100 , a base station A101 using cell A, a base station B102 using cell B, and a control station 103 .

[0035] When the mobile station 100 is near the boundary between the cell A and the cell B, the base station A101 and the base station B102 perform appropriate handover to transmit a signal to the receiver. The base station A101 and the base station B102 perform CRC (Cyclic Redundancy Check: Cyclic Redundancy Check) processing on the received signal. The control station 103 selects a signal without error among the signals transmitted from the base station A...

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Abstract

A propagation loss measuring unit (207) measures the propagation losses of cells. A propagation loss comparator unit (208) compares the propagation losses of the cells. A transmission slot control unit (209) controls, in accordance with a switching period informed from a base station and acquired by a changing period acquiring unit (206), a data composing unit (211) and a spreader unit (213) so that a signal is transmitted to the base station located in the cell whose propagation loss is smaller. That is, a mobile station (100) transmits an individual communication channel signal according to the propagation loss by appropriately changing the time slot assignment condition in the change cycle informed from the base station.

Description

technical field [0001] The present invention relates to a mobile station device and a radio communication method, and more particularly to a mobile station device and a radio communication method used in a TDD (Time Division Duplex: Time Division Duplex) radio communication system. Background technique [0002] In a cellular mobile communication system, a mobile station usually performs a handover near a cell boundary as a handover to a base station of a communicating party. The mobile station performs inter-sector handover in the same manner as inter-cell handover. There are generally two types of handoff methods: soft handoff and hard handoff. [0003] Hereinafter, inter-sector handover performed in a TDD radio communication system will be described with reference to FIGS. 1A to 1C , and FIGS. 2A and 2B . The TDD method is to divide the line of the same frequency band by time (time slot), and assign the communication channel of the downlink...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/00H04B7/08H04B7/26H04W36/06H04W36/08H04W36/18H04W36/30
CPCH04W36/08H04W36/30H04W36/06H04W36/18H04B7/212H04W36/36
Inventor 平松胜彦北出崇
Owner PANASONIC CORP
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