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Multi-cell TDMA radio communication through limited subsets of time slots

A limited subset and radio access technology, applied in wireless communication, radio transmission system, communication between multiple stations, etc., can solve problems such as interference and achieve the effect of preventing interference

Inactive Publication Date: 2001-08-22
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, increasing RF power can cause interference to neighboring cells, so strict frequency planning is required, and if feasible, measures must be taken to reduce this interference

Method used

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  • Multi-cell TDMA radio communication through limited subsets of time slots
  • Multi-cell TDMA radio communication through limited subsets of time slots
  • Multi-cell TDMA radio communication through limited subsets of time slots

Examples

Experimental program
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Embodiment Construction

[0037]The present invention will be described below with respect to its application in a cellular radio communication system, such as a cellular radio communication system operating according to the Global System for Mobile Communications (GSM) standard. some kind of restriction. The present invention can be widely applied to Time Division Multiple Access (TDMA) radio communication systems, including cellular radio communication systems and cordless radio communication systems, such as DCS 1800, PCS 1900, PDC, DECT, PHS, CT3 and so on.

[0038] Figure 1 shows a typical structure of a GSM network 10, which includes several functional entities whose functions and interfaces are specified in the available protocols. This GSM network 10 can be divided into three parts.

[0039] The first part, the radio communication terminal or mobile equipment (ME) 11, together with its Subscriber Identity Module (SIM) card 12, is carried by the user.

[0040] The second part, the radio access...

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PUM

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Abstract

A Time Division Multiple Access (TDMA) radio communication system, comprising radio access units or radio base stations (36-41) arranged to provide duplex radio communication with remote radio communication devices (42-44) in geographically limited areas or cells (30-35) through a plurality of receive and transmit time slots (T0-T7) grouped in frames. The radio communication system is arranged to provide radio communication in a cell (30-35) through a limited subset (T0, T4; T1, T5; T2, T6; T3, T7) of the plurality of receive and transmit time slots (T0-T7) of a frame. In a radio communication system comprising a multiple of RF carriers, the system may be arranged to provide radio communication in a cell (30-35) through a limited subset (f1: T0, T4; f2: T0, T4; f1: T1, T5; f2: T1, T5) of said plurality of receive and transmit time slots (T0-T7) of frames at different carriers (f1; f2).

Description

field of invention [0001] The present invention relates to a multi-cell cordless radio communication system, in particular to an indoor cellular radio communication system and radio network planning. Background of the invention [0002] A Time Division Multiple Access (TDMA) radio communication system, such as a microcell cellular radio communication system operating according to the Global System for Mobile Communications (GSM) specification, comprises a plurality of radio access units, ie radio base stations. Each base station provides services for a relatively small area or cell, and the radius of such an area or cell is usually from 10 to 100 meters indoors to 500 meters outdoors. [0003] These radio access units are connected to a central interface unit, also known as a radio exchange (RE) or base station controller (BSC), which itself is connected to a private automatic branch exchange (PABX), public switched telephone network (PSTN ) or the Integrated Services Digit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04W16/02H04W16/12
CPCH04W16/12H04W16/02H04B7/2643
Inventor P·查拉斯
Owner TELEFON AB LM ERICSSON (PUBL)