Placement of idle periods

Abstract

A telecommunications system comprising: a plurality of transmitters capable of transmitting data in superframes, each superframe comprising a plurality of frames, and each frame comprising a plurality of slots; the transmitters being arranged in groups, each group comprising a number of base stations, each group of base stations being assigned one or more slot numbers which are different from those of other groups and each of the transmitters of each group being assigned a different frame number, each transmitter being arranged to operate at reduced transmission power for a period commencing in the allocated slot or slots assigned to its group in the frame assigned to it.

Description

PRIORITY CLAIM[0001]This is a national stage of PCT application No. PCT / IB00 / 01719, filed on Jul. 7, 2000. Priority is claimed on patent application No. 9916220.8 filed in The United Kingdom on Jul. 9, 1999.CROSS-REFERENCE TO RELATED APPLICATIONS [0002]This application is a Reissue application of U.S. Ser. No. 10 / 030,352, filed Jul. 7, 2000, now U.S. Pat. No. 7,158,503, granted Jan. 2, 2007, which is a national stage of PCT application No. PCT / IB00 / 01719, and claims priority on application No. 9916220.8 filed in the United Kingdom on Jul. 9, 1999. <?insert-end id="INS-S-00001" ?>FIELD OF THE INVENTION[0003]The present invention relates to a telecommunications system and in particular to the arrangement of transmitters to potentially allow the transmissions of individual transmitters to be more easily distinguished.BACKGROUND OF THE INVENTION[0004]It is known to be desirable in telecommunications systems to provide positioning methods for determining the geographical location o...

AI Technical Summary

Benefits of technology

This approach enhances the accuracy of mobile phone positioning by ensuring that mobile phones can receive signals from multiple base stations during idle periods, minimizing service quality impact and improving measurement reliability.

Problems solved by technology

One particular problem which a time-based method is capable of overcoming is that of “hearability”.

This problem occurs when the user's mobile phone is much closer to one of the base stations being used for positioning purposes than other surrounding base stations.

In this situation, the signal between the user and the close station is so strong, that it is difficult to transmit and receive signals between the user and the other surrounding base stations.

This problem occurs particularly in a CDMA system, because all base stations typically transmit at the same carrier frequency.

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