Converging NGN Wireline and Mobile 3G Networks with IMS: by Rebecca Copeland

By Rebecca Copeland

Targeting the longer term community structure and its major rules, Converging NGN Wireline and cellular 3G Networks with IMS offers a finished view of the equipment, capabilities, community components, and the interfaces between them that allow the construction of a carrier agnostic and entry agnostic consultation keep watch over layer in accordance with the IMS criteria.

After an advent to IMS ideas with marketplace tendencies, technological strategies, migration concerns, and worldwide criteria, the e-book describes converged consultation regulate and multimedia dealing with with identification administration, provider profiles, and occasion and purposes triggering in addition to admission tactics for various forms of entry networks. next chapters take on the all-important facets of IP charging mechanisms, service-based caliber of carrier, protection, border regulate, and legacy prone, allowing an intensive appreciation of the total community requisites. anyplace attainable, the writer issues out the convergence of criteria and info diversified standards and terminology for TISPAN and 3GPP.

Delivering deep perception into the function of IMS in mounted line and cellular networks, this e-book explains the hot applied sciences from ideas to specific strategies to offer a transparent realizing of the way the subsequent iteration of converged communique should be completed with controlled caliber, protection, and chargeability.

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These services do not require any special settings or prestored data. These services may be offered to a Visited user from the Local network. In particular, Location-Based Services that detect the user’s current physical location can provide services and information only available within the Visited Network, relevant to the locality. These services are therefore provided without the need to connect to the Home Network. Access to them may require only local authorization. As the users are not fully identified, they cannot be easily charged (unless they are on a Pre-pay service).

The following table lists functions within IP communication that need protecting from various risks. It lists the type of security relevant for the function, along with examples of methods that can be applied to mitigate these risks. ), Random challenge NNI and UNI authentication Mutual authentication MAC, AUTN Session initiation Service authorization IKE, ESP, SIP screening Invoking AS AS registration, third-party registration HTTPS, ALG Media payload Media screening, packet filtering, tunneling SA/IPSec, ALG, TLS Charging Charging rules enforcement COPS/Diameter Authorization of resources QoS profiles, end-to-end QoS Encryption, IPSec protocol QoS enforcement Traffic shaping (anti-DoS) Secure COPS/Diameter Inter-operator routing NNI mutual authentication Border Gateway filtering IKE, ESP, TLS SIP Screening, IPSec Internal network elements and servers Topology hiding, generic addressing NAT/PAT, DNS queries for FQDN resolution Service provider’s access Application authentication Filter/authorize operations AKA/HTTPS Digest SIP screening, Applications gateway User provisioning Administrative privileges, data Encryption privacy Source: Compiled from multiple sources.

IMS distinguishes between the Media layer, the Control layer and the Services layer to allow for rapid development of new applications and services on the one hand, and linking them to the ever-increasing types of access and media technologies on the other hand. The decoupling between these layers is therefore a cornerstone design principle and a marked deviation from traditional voice networks. This layered model also defines clear interfaces between Access Nodes and Control Servers, with admission control and authentication procedures that can be adjusted to suit differences in terminals and access methods.

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