The present invention uses a list management server for specifying conference participants in an IMS environment. More specifically, a conference list can be established for a standard list management server. The conference list can be a group list that is identified with a unique public URI. The group list can include multiple members, where each member can be identified by a member URI. Members can be specific participants associated with a user specific URI and/or can be a group of participants. When the conference is initiated, a new communication session can be instantiated and a conferencing application execute. After session instantiation, participants included in the conference list can join the session.

Using a list management server for conferencing in an IMS environment

In this position paper we introduce Virtual Telco, a comprehensive effort to simplify the management of deployed telecommunication services by using a Cloud computing approach. The main objective of Virtual Telco is to replace the costly dedicated hardware implementing several centralized control plane functions and other services with distributed solutions that may be allocated on-demand over a pool of dependable, dynamically contracted computing and networking resources that are easy to manage. Virtual Telco relies on state-of-the-art techniques in the domains of virtualization and distributed systems to meet the challenging criteria of reliability, scalability, and timeliness required by present and future telecommunication standards and services. As a representative example of a Virtual Telco application, we propose the case of the distributed mobility management entity (MME) for next-generation LTE cellular networks.

Telco clouds and Virtual Telco: Consolidation, convergence, and beyond

A method and apparatus are described for accessing services affiliated with a service provider. A first discovery procedure may be performed to discover at least one service provider, and a bootstrap procedure may be performed with the at least one discovered service provider. A second discovery procedure may then be performed to determine available service capability layers (SCLs) supported by the at least one discovered service provider. The first discovery procedure may include transmitting a service provider discovery request including information for querying a record database to determine matching service provider discovery records, and receiving a service provider discovery response including a service discovery function record list that matches queries in the service provider discovery request. At least one service provider from the service discovery function record list may be selected to bootstrap with. Various versions of the second discovery procedure are described.

Method and apparatus for accessing services affiliated with a discovered service provider

This paper presents a realization of a multi-service P2P overlay architecture that allows for establishing SIP multimedia sessions between mobile community members with little or no need for centralized servers of any kind. The overlay architecture forms a cost efficient platform for providing innovative mobile services. As an example, this paper presents an implementation of a mobile P2PSIP VoIP service. The implementation allows a mobile phone user make voice calls using resources of the P2P overlay. The mobile phone user may freely use standard call manager and contact list in a mobile phone. The paper also presents a method for locating relay servers that are used in NAT traversal.

/pdf/mobile-p2psip-peer-to-peer-sip-communication-in-mobile-39w93j3a57.pdf

Mobile P2PSIP - Peer-to-Peer SIP Communication in Mobile Communities

A method of processing a transaction between a first user in a first telecommunications network and a second user in a second telecommunications network is disclosed. The first and second telecommunications networks comprise respective first and second transaction processing systems which are not required to have a direct interface between them. A transaction request is received from a first user in the first telecommunications network to effect a transfer of credit to a second user in the second telecommunications network. The transaction request includes an identifier of the second user. A credit value for the transaction is determined. The system verifies that the first user has access to credit sufficient to effect the transfer, and credit associated with the first user is reserved in the first network for the transaction. A transaction instruction message (including the determined value for the transaction) is generated to instruct transfer of credit to the second user, and is forwarded to a trusted third party intermediary server, which interfaces to a plurality of telecommunications networks to arrange transactions between the telecommunications networks. After a confirmation message is received confirming delivery of the credit to the second user, the reserved credit is then debited from an account associated with the first user in the first telecommunications network. An accounting packet associated with at least one transaction and the accounting packet or an aggregated accounting packet for a plurality of transactions is forwarded to an accounting server associated with the intermediary server. This effects transfer of monetary value between an account associated with the first telecommunications network and an account associated with the trusted third party intermediary server.

Transaction processing system and method

The invention provides a system, method, and network elements for providing a service, preferably an advice of charge, AoC, service requested by a user equipment at a session set-up or during a session. An application server provides information for the requested service to the user equipment. In an embodiment, authorization information and the information for the requested service may be sent to the user equipment. Depending on an input by the user or other type of confirmation such as expiration of a timer, the user equipment may initiate continuation of the session, for example by generating an authorization response based on the received authorization information, and sending the generated authorization response to the application server for verification.

System, method, and network elements for providing a service such as an advice of charge supplementary service in a communication network

This document presents the architecture of a distributed IP Multimedia Subsystem (IMS). The architecture distributes network functional elements in Distributed Hash Tables (DHT) overlay network. This work focuses on distributing the SIP proxies, such as the Serving-Call/Session Control Function (S-CSCF) and the Interrogating-Call/Session Control Function, as well as the Home Subscriber server (HSS), and up to some degree, presence servers. A combined DHT overlay network is also proposed. Distribution of the network functional elements in a DHT fashion leads to increased robustness of IMS network elements. Besides the self-organizing overlay network offers a significant savings in OPEX.

A Distributed IP Multimedia Subsystem (IMS)

The present invention relates to a method, apparatus, system, and computer program product, in which a unique identifier of a node of a network is used to request from a database location-dependent information for a device attached to said node. An identifier of at least one server serving an area in which said device is located is then retrieved by using said location-dependent information.

Server Identifier Acquisition Based on Device Location

This paper presents the architecture and the signaling flows of a multi-service overlay network implemented over the IP Multimedia Subsystem (IMS). The overlay network uses the concept of SIP-based Peer-to-peer (P2P) for providing resource sharing services, such as photograph exchange, allowing the distribution of resources across an overlay network formed for that purpose. The SIP P2P overlay network forms a cost efficient platform for providing innovative mobile services. Using the presented platform, fixed and mobile operators can provide valuable services utilizing the strengths of the IMS such as sophisticated charging, control, security and authentication mechanisms.

Resource Sharing and Discovery on Top of IMS

This paper presents an architecture called Social Distributed Hash Table (SDHT) that combines strengths of Distributed Hash Table (DHT) algorithms and social networks making mobile search fast and context oriented. The paper presents possible implementations of the proposed architecture in the IP Multimedia Subsystem (IMS) (1) and as a standalone SIP based system. The architecture forms a cost efficient platform for providing innovative mobile services that take advantage of social context of human communication. The architecture can be used to deploy a global virtual mobile network by placing SDHT nodes in different geographical regions. The paper also presents a content sharing inside community service.

Miguel A. Garcia-Martin

Papers

System, method, and network elements for providing a service such as an advice of charge supplementary service in a communication network

A Distributed IP Multimedia Subsystem (IMS)

Server Identifier Acquisition Based on Device Location

Resource Sharing and Discovery on Top of IMS

Social Distributed Hash Table Share and collaborate in your social network