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A novel intelligent mobile backhaul RAN architecture for emerging heterogeneous networks

机译：用于新兴异构网络的新型智能移动回程RAN架构

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The global demand for mobile-broadband data services has experienced phenomenal growth over the last few years, driven by the rapid proliferation of smart devices such as smartphones and tablets. This growth is expected to continue unabated as mobile data traffic is predicted to grow anywhere from 20 to 50 times over the next 5 years. Exacerbating the problem is that such unprecedented surge in smartphones usage, which is characterized by frequent short on/off connections and mobility, generates heavy signaling traffic load in the network "signaling storms". This consumes a disproportion amount of network resources, compromising network throughput and efficiency, and in extreme cases can cause the cellular networks to crash. Heterogeneous networks (HetNets), which comprise a combination of macro-cell base stations and low-cost low-power small cell (SC) base stations operating over both licensed (e.g., femto and picocells) and unlicensed (e. g., WiFi access points) bands, have recently emerged as a viable solution to cope with such unprecedented mobile traffic growth. While deploying large number of SCs close to users will certainly help to solve the radio access network's (RAN) capacity and coverage problem, however, there is a significant price to pay - HetNets create a new challenge for the backhaul. The key challenge is how to provide cost-effective, scalable and flexible mobile backhaul solution to connect SCs to the mobile core network. The purpose of this paper is to propose and devise a cost-effective PON-based HetNet mobile backhaul RAN architecture that: 1) leverages existing fibered and powered facilities associated with a PON-based fiber-to-the-Node/ Home (FTTN/FTTH) residential access network; 2) enables, for the first time to the best of our knowledge, the support of efficient ground-breaking mobile data and signaling offload techniques, which significantly enhance the performance of both the LTE-A-based HetNet RAN and mobile core network (Evolved Pac- et Core (EPC) per 3GPP standard), ensure that core network equipment is used more productively, and moderate the evolving signaling growth and optimize its impact.
机译：在过去的几年中，由于智能手机和平板电脑等智能设备的迅猛发展，全球对移动宽带数据服务的需求经历了惊人的增长。随着移动数据流量在未来5年内预计将以20到50倍的速度增长，预计这种增长将持续下去。加剧该问题的是，智能手机使用率的空前增长（其特点是频繁的短时开/关连接和移动性）在网络“信令风暴”中产生了沉重的信令流量负载。这消耗了不成比例的网络资源，损害了网络吞吐量和效率，并且在极端情况下可能导致蜂窝网络崩溃。异构网络（HetNet），包括宏蜂窝基站和在许可（例如，毫微微小区和微微小区）和未许可（例如，WiFi接入点）上运行的低成本低功耗小蜂窝（SC）基站的组合频段，最近已经成为应对这种前所未有的移动业务增长的可行解决方案。虽然在用户附近部署大量SC无疑将有助于解决无线接入网（RAN）的容量和覆盖范围的问题，但是要付出巨大的代价-HetNets为回程带来了新的挑战。关键的挑战是如何提供经济高效，可扩展且灵活的移动回程解决方案，以将SC连接到移动核心网络。本文的目的是提出并设计一种经济高效的基于PON的HetNet移动回程RAN架构，该架构：1）利用与基于PON的光纤到节点/家庭（FTTN / FTTH）住宅接入网; 2）据我们所知，首次实现了对高效突破性移动数据和信令卸载技术的支持，这些技术显着增强了基于LTE-A的HetNet RAN和移动核心网的性能（已演进符合3GPP标准的Pac et Core（EPC）），确保更高效地使用核心网络设备，并缓和不断发展的信令增长并优化其影响。

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