Laeyoung Kim

Enhanced 3GPP system for interworking with fixed broadband access network

This article explains the 3GPP-BBF interworking architecture using WLAN access or home (e)NodeB/femtocell access in order to go toward single network for policy and QoS convergence. The interworking architectures and schemes ensure that the customers get the same service via any access network. In addition, this article covers the mechanisms to support evolved packet core routed traffic and non-seamless WLAN offloaded traffic in the interworking architecture.

Machine type communications in 3GPP: From release 10 to release 12

This paper describes the feature development for machine type communications (MTC) in 3GPP from Release 10 to Release 11 and gives an outlook to the upcoming Release 12. Especially, this paper covers the enhanced 3GPP architecture to support the communication between the MTC application in the MTC device and the MTC application in the external network.

Enhanced voice over LTE and its roaming aspects

This paper mainly explains an enhanced domain handover scheme for VoLTE (Voice over LTE) called eSRVCC. The scheme is essential in order to ensure the carrier-grade voice call quality; especially during the network migration phase from legacy circuit switched system to the All IP based EPS (Evolved Packet System). In addition, this paper explains the new mechanisms to support VoLTE in roaming scenarios.

3GPP IMS-Based Inter-Device Collaboration

The consumer demand for personalization of service usage in emerging ubiquitous environments requires that users are able to transfer media among different kind of devices they use for either leisure or business (e.g., mobile phone, TV set, PC, etc.). Within 3GPP, the service continuity between different access networks is taken one step further to allow for session mobility between devices connected via different access networks. This is achieved through extending the capabilities of the IP Multimedia Subsystem (IMS), allowing service providers to provide a unique IMS-based service offering. This paper explores the recently completed 3GPP inter-device collaboration standardization work. In addition, future enhancements for multi-device and multi-user collaboration, under consideration are also briefly described.