Short-range cellular booster

Abstract

A repeater that passes traffic between network transceivers and user transceivers in a wireless communication system. The transponder contains: a network unit, which maintains a network link with the network transceiver; a subscriber unit, which maintains a subscriber link with the subscriber transceiver; a bidirectional communication path between the network unit and the subscriber unit, which facilitates self-government Signal communication between network transceivers and user transceivers in transponder hops between network transceivers and network elements, between user transceivers and user elements, and between network elements and between the subscriber units; and beamformers coupled to the network unit and the subscriber unit respectively and adapted to convey signals in the frequency bands of operation of the network and subscriber transceivers and to control the effective radiated power.

Description

technical field [0001] The invention relates to a wireless communication system, in particular to a repeater or a short-distance cellular booster in the wireless communication system. Background technique [0002] Existing cellular networks, such as the Global System for Mobile Communications (GSM) and IS95, intend to provide sprawling and continuous coverage in order to support the high terminal mobility expected of such systems. However, despite careful network design, coverage of such networks indoors (in buildings) or in places with high shadowing attenuation (such as tunnels) is often "patched", at best with "coverage gaps". (holes)" and in the worst case no coverage. The reason for the weakened indoor coverage is that cellular base stations are usually placed outside buildings, at higher than average building heights, to provide large area coverage. While the signal may be adequate at "street level", it is severely attenuated by building materials, reducing signal po...

AI Technical Summary

Problems solved by technology

These outdoor repeaters are still too expensive for private users and involve careful planning

Most use large directional antennas or additional backhaul frequencies to reduce antenna gain specifications, which results in lower spectral efficiency and limited capacity

Transponders tend to emit the maximum allowable transmit power and often cause increased interference in the network and therefore may not be suitable for network operators

Indoor repeaters, although less expensive than outdoor versions, typically involve mounting highly directional antennas on the roof and ensuring antenna isolation, creating costly requirements for skilled installation and operation

Therefore, the systems are generally too complex for unskilled users and not cheap enough for use in very localized coverage areas

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