As a result, the operators are able to offer a carrier grade Wi-Fi that allows the cellular users to offload part of their traffic. Over the past years, 3GPP has been working on new functionality that will allow Wi-Fi AP to connect on the Evolved Packet Core (EPC), which is the core network of 3GPP 4G network and future wireless network. For these reasons, WiFi is emerging to become one of the key enablers to deal with congestion issue of future cellular network.
#Simulate fiwi access network portable
In case of network outage, WiFi can serve as a backup network for cellular network since it is supported by wide varieties of portable devices such as smartphones and tablets. Besides, WiFi can cut down the CAPEX for operators since it is cheaper and easier to deploy in large scale especially in indoor environment such as airport, shopping mall or any other crowded area. Unlike any other small cell technologies (femto-cell and pico-cell), WiFi utilizes unlicensed frequency band causing minimum interference to macro-cell. However, as far as we concerned, more and more network operators commit to adopt WiFi as the extended access for cellular network. 3gpp Access Network Discovery And Selection FunctionģGPP has considered the non-3GPP and 3GPP cellular network The obvious choices for offloading are small cells and Wi-Fi. It helps to ensure optimal usage of available radio resources and load balancing among available radio accesses.Ģ.1. Offloading is referred as using alternative network technologies for delivering data that is originally targeted for, e.g., using WiFi to offload traffic from cellular network when it becomes congested. Offloading mobile traffic to other networks is one of the key solutions for aforementioned problem. For these reasons, increasing network capacity and resilience become major concerns for network operators. In addition, in many areas, the wireless network is vulnerable to natural disasters or outage, which can cause unexpected service disruption to the mobile network. Since the carrier’s network infrastructure cannot measure up with the growth of mobile traffic, network congestion is happening more frequently, especially in crowded area. This massive increase of mobile data traffic raises a major concern for network operators who own limited radio spectrum. Experts forecast that mobile data traffic will increase more than ten times by 2020, whilst billions of devices will be interconnected with mobile broadband connections by then. In recent years, the proliferation of smart devices (smart phones and tablets) and mobile Internet applications is causing the explosion of mobile traffic. WiFi cellular interworking reliable HetNet congestion control network failure tolerance. Therefore, our proposed scheme can be used for a more reliable HetNet in terms of congestion control and disruption tolerance. As a result, service disruption is substantially reduced and quality of experience (downlink/uplink’s throughput) is improved. The simulation result shows that our proposed scheme quickly detects unexpected network failure event and assists active UEs to perform handoff to preferable alternative point of access. We also model and evaluate the proposed scheme in a typical HetNet with interworking WiFi access points and cellular base stations. The proposed scheme is aimed at enhancing the network roaming and selection so that WiFi network can serve as a supplement and backup access network for the cellular not only for congestion control but also in case of unexpected network failure event. In this paper, we propose a novel network roaming and selection scheme based on 3GPP TS 24.312 and IEEE 802.11k, u standards to enhance cellular and WiFi interworking. However, the interoperability issue between the two networks needs to be enhanced so that WiFi can efficiently supplement for the cellular network in case of congestion or outage. The idea of using WiFi to offload data traffic from cellular network has proposed for many years. WiFi offloading is becoming one of the key enablers to help the network operators dealing with the exponentially growing demand of mobile data. Graduate School of Global Information and Telecommunication Studies A Proposal To Enhance Cellular And Wifi Interworking Toward A Reliable Hetnet
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