Mobility Management in Wireless Networks : Data Replication Strategies and Applications

af

indgår i serie Ercoftac Series


Mobility Management in Wireless Networks : Data Replication Strategies and Applications
Format:
Bog, hardback
Udgivelsesdato:
01-05-2004
Sprog:
Engelsk
  • Beskrivelse
  • Yderligere info
  • Anmeldelser

In wireless communication systems, the network keeps track of a user's location through an up-to-date user profile stored in various databases. A user profile contains not only a user's current location information, but also service information, such as billing and authentication. The cov- age area of an access network is divided into registration areas (RAs), and each RA is associated with a location database. The two basic op- ations in mobility management are location update and location lookup. When a user moves across the boundaries of these RAs, the network updates his location information in the pertinent databases. When a caller places a call using the callee's identification, the network queries the relevant database(s) to obtain the current location and other service information of the callee. The performance of mobility management can be further enhanced by using replicas of user profiles which may be kept at various locations. Replication techniques make profile information more readily available, thus reducing lookup cost and latency, but to keep these replicas c- sistent and fresh, they must be updated whenever the user profile is updated. The principle of replication is to replicate if the benefit of replication is greater than its overhead. The difficulty, however, lies in accurately measuring the benefit and overhead.

Vis mereVis mindre

ISBN13:
9781402078965
Vægt:
431 g
Dybde:
11 mm
Bredde:
156 mm
Højde:
234 mm
Forlag:
Springer
Format:
Hardback

Vis mereVis mindre

Vis mereVis mindre

Mobility Management in Wireless Networks : Data Replication Strategies and Applications

af

indgår i serie Ercoftac Series

  • Leveringstid 4-6 hverdage
  • Forventet levering 26-07-2019

på lager

Fandt du ikke hvad du søgte?

Hvis denne bog ikke er noget for dig, kan du benytte kategorierne nedenfor til at finde andre titler. Klik på en kategori for at se lignende bøger.

Velkommen til Saxo

Du har nu adgang til din konto hos Saxo, og kan se alle oplysninger om dit medlemskab, dine
ordrer og din digitale boghylde under "Mit Saxo".

Som tak for, at du har aktiveret dit medlemskab, har vi valgt at give dig fri læsning hele
sommeren. Dvs. at du frit kan tilgå de mere en 50.000 bøger i Saxos app, samt købe bøger til
vores altid lave medlemspris og fri fragt her på Saxo.com hele juli. Din næste medlemsbetaling
vil først falde i august.

Vi glæder os meget til at byde dig velkommen i vores univers, og håber at du kommer godt i
gang med Saxo Premium.

God sommer og god læselyst!

Med venlig hilsen Saxo

Kom i gang nu!