Sectorized cell having non-redundant broadband processing unit

a technology of non-redundancy and processing unit, applied in the field of wireless communication systems, can solve the problems of only a fixed number of service providers, increase the complexity and expense of base stations, and achieve the effect of reducing the cost of base stations

Inactive Publication Date: 2001-06-21
HANGER SOLUTIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A primary limitation in current cellular communication systems is that a service provider is only allocated a fixed number of frequencies with which to handle subscriber calls.
Unfortunately, such replication of digital processing equipment increases the complexity and expense of the base station.

Method used

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  • Sectorized cell having non-redundant broadband processing unit
  • Sectorized cell having non-redundant broadband processing unit
  • Sectorized cell having non-redundant broadband processing unit

Examples

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Embodiment Construction

[0023] The geographic disbursements optimizes service coverage with the entire bandwidth (e.g. 12 MHz) available to the service provider, and ensures non-interfering coverage among dispersed cell sites. Over a broad geographical area however, the frequency allocation within respective cells and the separation between adjacent cell sites may be prescribed to effectively prevent mutual interference among any of the channels of the system. Thus, frequency reuse is the core concept of cellular communications. A rule of thumb in the cellular industry states that a channel can be reused again in every seven cells. The application of this rule varies due to the factors that determine the size of a cell and the propagation of cellular transmissions such as the particular terrain, the degree and density of urban growth, the expected number of subscribers, etc. Since a system operator cannot add channels to their system--each system is limited to 400 channels--frequency reuse schemes are ofte...

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PUM

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Abstract

A technique for converting a non-sectorized cell to a sectorized cell having multiple sectors utilizing a single broadband processing unit. The spectrum of a given frequency band is divided into multiple bands. In the receive path, respective sub-bands are used to convey analog RF signals from a subscriber in respective sectors to an associated transceiver. Each of the transceivers includes a front end for receiving incoming RF signals and an analog-to-digital converter for converting the analog signal to a digital data stream. The digital data streams from transceivers are combined, and supplied to a single channelizer which, in turn, supplies the data to a TDM bus for transmission to a PSTN network. In the reverse path from the PSTN network, TDM digital data signals emanating from a TDM bus are supplied to a combiner which feeds each of the respective transceivers with appropriate data from the combiner. The transceivers convert the digital signal to analog form. After conversion, power amplifiers associated with the respective sectors effect emission of radiated power in the respective sectors.

Description

[0001] This application is a continuation application of and claims the priority from U.S. application Ser. No. 09 / 112,149, entitled "SECTORIZED CELL HAVING NON-REDUNDANT BROADBAND PROCESSING UNIT", filed Jul. 9, 1998, the entirety of which is incorporated herein by reference.[0002] 1. Field of the Invention[0003] The present invention relates to wireless communication systems, but more particularly, to a method and system for attaining sectorization in a cellular communication system utilizing a single broadband processing unit.[0004] 2. Discussion of the Prior Art[0005] In order to provide multi-channel voice and data communications over a broad geographical area, wireless communication providers currently install base station transceivers in protected and maintainable structures, known as cell sites. A cell site encompasses an antenna, a tower or building upon which the antenna is mounted, high-power amplifiers, duplexers, transmitters, receivers and broadband processing equipmen...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04W16/28H04W88/08
CPCH04W16/28H04W88/08Y02B60/50Y02D30/70
Inventor SCHMUTZ, THOMAS R.
Owner HANGER SOLUTIONS LLC
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