A Novel Network Architecture for 3G Evolution

Abstract

With the increasing requirement on QoS of data service, the long term evolution (LTE) of 3G is being researched and standardized to provide higher bit rates with lower latency, lower cost and improved coverage. In this paper，a novel network topology optimization of UMTS access networks combining mobility management and improved authentication schemes is proposed to support these requirements. The architecture presents a concept of URA (UMTS Terrestrial Radio Access Network Registration area) self-control system in control plane (C-plane) of access network, so that the handover process of C-plane can be independent of that of user plane (U-plane), which significantly reduces the handover latency. Moreover, a novel layered tunnels topology method is proposed in U-plane to achieve load equilibrium in access gateway (AGW). Based on the proposed network architecture, we give examples of signaling sequence combining fast handover process and proposed authentication scheme, and shows that their performance is generally superior to current 3G network architecture, in terms of reducing handover latency and increasing data security and integrity.

Design of Session and Bearer Control Signaling in 3GPP LTE System

“…In order to satisfy these requirements, new radio transmission technologies such as Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input and Multiple Output (MIMO) are adopted. Also, radio access network and control signaling need to be optimized to meet these requirements [1,2,3].…”

Roaming Between Heterogeneous Wireless Networks

“…In the continuing development of wireless network, 3GPP has proposed the long term evolution (LTE) scheme as the evolutionary path for current 3G network architecture [1] [2]. Assuming that LTE provides an overlay architecture on the current 3G network, the resulting 3G-LTE network potentially creates some issues relating to roaming, QoS and support of local service.…”

Performance of a Two-hop Non-regenerative Wireless Relaying System Employing Distributed LDC

“…The objective of the ubiquitous communications system is to support higher bit rates, improved coverage and spectrum efficiency [2] [3]. One way to widen the network coverage is to use cooperative relaying technique.…”

“…• N 2 is the noise signal vector at RX, and the entries of N 2 , i.e (2) ,. Tm n are independent zero-mean complex Gaussian variables.• A is power amplifier factor (PAF) at RS, and the entries of A, i.e.…”