Abstract
Reaching a flat network is the main target of future evolved packet core for the 5G mobile networks. The current 4th generation core network is centralized architecture, including Serving Gateway and Packet-data-network Gateway; both act as mobility and IP anchors. However, this architecture suffers from non-optimal routing and intolerable latency due to many control messages. To overcome these challenges, we propose a partially distributed architecture for 5th generation networks, such that the control plane and data plane are fully decoupled. The proposed architecture is based on including a node Multi-session Gateway to merge the mobility and IP anchor gateway functionality. This work presented a control entity with the full implementation of the control plane to achieve an optimal flat network architecture. The impact of the proposed evolved packet Core structure in attachment, data delivery, and mobility procedures is validated through simulation. Several experiments were carried out by using NS-3 simulation to validate the results of the proposed architecture. The Numerical analysis is evaluated in terms of total transmission delay, inter and intra handover delay, queuing delay, and total attachment time. Simulation results show that the proposed architecture performance-enhanced end-to-end latency over the legacy architecture.
Highlights
In recent years, the increase in mobile traffic exerted pressure on mobile operators to re-engineer next-generation core networks by proposing flat-network architecture to provide a scalable solution for billions of devices [1,2,3]
We build new network entities representing the mobile core, such as Mobile Control Entity, which combines the Management Mobility Entity (MME), Serving Gateway (S-GW), and Packet-data-network gateway (P-GW), and consists of several control entities to avoid a single point of failure
The Numerical analysis and simulation results showed that the proposed Software Defined Networking (SDN)-based Distributed Mobility Management (DMM) architecture performance-enhanced end-to-end latency over the legacy architecture
Summary
The increase in mobile traffic exerted pressure on mobile operators to re-engineer next-generation core networks by proposing flat-network architecture to provide a scalable solution for billions of devices [1,2,3]. The data delivery procedures, including initial attach and mobility management, are based on the concept of GPRS tunneling protocol (GTP) [18,19] All such proposals show SDN-based architecture splitting control and data plane They analyzed the procedures necessary for the entire OpenFlow-enabled LTE/EPC. the results with signaling load are good, the proposed architectures are still based on centralized mobility. In [28] the authors proposed two solutions for a partially distributed approach; the first solution includes PMIPv6-based DMM based modifying classical Proxy Mobile IPv6 protocol. It follows a Software-Defined Networking called SDN-based DMM.
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