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- W2612096048 abstract "Precision timing throughout the public and private digitalnetworks is a must and thus the objective. Everytelecommunications service depends on continuous,error- free transmission of information that is onlypossible through the use of precision synchronizationsystems. Today, the Global Positioning System (GPS) isthe most frequently selected technology used in theUnited States and throughout national networks worldwide. This paper describes the use of GPS within thetelecommunications infrastructure today.The method to ensure each network element for moderndigital communications is synchronized, is typically toprocure two attributes: (1) generation of a frequencysource suitable for all services and technologies; and (2)distribute that signal throughout the entire network.In the U.S. the concept is called BITS - BuildingIntegrated Timing Supply, first defined by Bellcore andAT&T, and now prescribed by ANSI Standards for allnational and regional carriers for their central officenodes. GPS with its long term frequency accuracy, ubiquitous availability, and decreasing costs over the last6-8 years makes it very suitable to serve as the BITSsource in some manner. It can serve either as the networktiming source or simply as an overlay synchronizationdistribution network.The greatest difficulty for the telecommunicationsinfrastructure is currently distribution of the networktiming and synchronization source. Network impairmentssuch as jitter and wander that can constantly impact dataflow must be controlled.Complex network architectures such as SONET that utilizethe high speed fiber bandwidth create many new demandson the network synchronization infrastructure.One concern being the large number of clocks cascaded orchained together.Digital wireless network needs, be it GSM, CDMA,TDMA, or DECT impose similiar yet different demands.The use of GPS in a direct or combined manner can reducecost while maintaining the performance required. This iswhat GPS has provided today at CDMA base stations andBITS nodes. The cost of GPS timing receivers has beencoming down in price while maintaining high reliabilityand performance.The practicality of GPS in the telecommunicationsinfrastructure is seen in both the acceptance and costadvantages, as evidenced by the thousands GPS timingdevices used in networks today. The purpose being to serveas an overlay synchronization network - either as thesource, distribution framework, or both. In most cases GPSis used as the primary source and in others as the backup.The last driver for putting GPS into the infrastructure isthen to gain the other benefits a localGPS source provides, network frequency verification, andTime of Day." @default.
- W2612096048 created "2017-05-19" @default.
- W2612096048 creator A5054768193 @default.
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- W2612096048 date "1998-09-18" @default.
- W2612096048 modified "2023-09-24" @default.
- W2612096048 title "Global Positioning System Use In Telecommunications" @default.
- W2612096048 hasPublicationYear "1998" @default.
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