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Radio communication system, base station apparatus, and terminal apparatus

A technology of a terminal device and a base station, which is applied in the fields of wireless communication systems, base station devices and terminal devices, and can solve problems such as waste of frequency use

Inactive Publication Date: 2008-10-01
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In PHS, even if the same control information is common among base stations, each base station transmits using the required time slot individually, so there is waste in frequency usage

Method used

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  • Radio communication system, base station apparatus, and terminal apparatus
  • Radio communication system, base station apparatus, and terminal apparatus
  • Radio communication system, base station apparatus, and terminal apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0046] In the first embodiment, all base stations in a zone transmit the same signal in a time slot allocated in advance to each zone. The base station confirms whether the pre-allocated time slots in areas other than the area to which it belongs are not used by other base stations. The base station uses the confirmed unused time slots to intermittently transmit its own control information.

[0047] In the first embodiment, the terminal selects a connection destination base station based on a common paging signal transmitted from the base station.

[0048] A base station according to this embodiment will be described with reference to FIG. 1 .

[0049] The base station in this embodiment includes a modulation processing unit 101, a selector 102, a data multiplexing processing unit 103, an IFFT (inverse fast Fourier transform: Inverse Fast Fourier Transform) processing unit 104, a cyclic prefix adding processing unit 105, a D / A (digital-to-analog: digital analog) conversion ...

no. 2 approach

[0100] In the second embodiment, like the first embodiment, all the base stations in the area transmit the same signal in the time slots allocated in advance for each area, and the time slots allocated to areas other than the area to which the own base station belongs are detected by the own base station as being idle. Candidates for slots used to transmit control information unique to the own base station.

[0101] The difference between this embodiment and the first embodiment is that each base station in the area uses the pre-assigned time slots other than the time slots for transmitting call information common in the area that are pre-assigned according to the calling area, and the inherent inherent control of the base station is used. The information is sent to the terminal.

[0102] In addition, in this embodiment, unlike the first embodiment, a base station control station (Base Station Controller: BSC) that collectively controls all base stations is provided. In this ...

no. 3 approach

[0141] In the third embodiment, the present embodiment is characterized in that not only the common paging information is multiplexed for each area, but also the base station unique information is multiplexed in the time slot for transmitting the common paging information in each area. Information.

[0142] In the third embodiment, the base station confirms whether the pre-allocated time slots in areas other than the area to which it belongs are not used by other base stations, and uses the time slots confirmed to be unused to intermittently transmit its own control information. One point is the same as that of the first embodiment. Also, in this embodiment, the terminal determines a connection destination base station in the same manner as in the first embodiment, but the method used for determination is different.

[0143] Also in the third embodiment, as in the first and second embodiments, a case where K=M is ​​assumed to be described.

[0144] A base station according to ...

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PUM

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Abstract

The invention provides a time slot distribution structure of channel transmission content for increasing control information and also provides a wireless communication system, base station apparatus and terminal apparatus, which is characterized in that the base station apparatus includes a first transmission unit configured to transmit area common information common to all base station apparatuses in an area by using not less than one time slot of not less than one common time slot assigned to each of a plurality of areas including a plurality of base station apparatuses, the common time slot being assigned to adjacent areas which are different from each other, a carrier sense unit configured to perform carrier sense on a first time slot except for the common time slot, a selection unit configured to select a second time slot determined as being available by the carrier sense, and a second transmission unit configured to intermittently transmit a control signal unique to the base station apparatus in the second time slot at K (K positive integer) time slot periods.

Description

technical field [0001] The present invention relates to a frame structure for assigning a control channel of a wireless communication system, a method of transmitting a terminal call signal, a sequence from a terminal call to a response, and a wireless communication system, a base station device, and a terminal device for realizing the sequence. Background technique [0002] In the cellular mobile wireless communication method that divides the area where wireless communication is performed into a plurality of areas called cells and sets the cells without gaps on the surface centered on the wireless base station, there are cells with a radius of several hundred PHS (Personal Handy-phone System: Personal Handy-phone System) is a representative system using a micro-cell system composed of smaller cells below one meter. [0003] In the PHS, time division multiplexing (Time Division Multiplexing: TDM) is used in the downlink from the base station to the terminal, and time divisio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/30H04Q7/38H04B7/26H04L27/26H04L27/38H04W16/02H04W48/12H04W68/02
CPCH04W48/12H04W48/08H04W68/02H04W72/0406H04W74/0833H04W88/08H04W72/20
Inventor 井上薰坂耕一郎小林崇裕
Owner KK TOSHIBA