标题: | 线上收费系统于分享方案下之动态预约方法 A Dynamic Reservation Scheme in Online Charging System for Shared Plan |
作者: | 苏子仲 Su, Tzu-Chung 曾煜棋 Tseng, Yu-Chee 网路工程研究所 |
关键字: | 第四代行动通讯技术标准;长期演进技术;线上收费系统;第三代合作伙伴计画;分享方案;4G;Long Term Evolution (LTE);Online Charging System (OCS);3GPP;Shared plan |
公开日期: | 2015 |
摘要: | 为了简化计费流程与减少资料用量,近年来电信业者们所提出的分享方案蔚为风潮。基于第三代合作伙伴计画(3GPP)所制定之标准,线上收费系统(OCS)必须于服务网路发送一段服务至使用者设备之前先计算并决定好一个核准量(Granted Unit, GU),并为此次工作阶段预留该核准量。然而固定的核准量并不合适于动态的使用者行为变化,因此需要动态地调整 每次给予的核准量。当给予的核准量太小,可能会造成讯息交换次数过于频繁而在预留时产生大量的讯号量;而当给予的核准量太大,可能会造成不平均的资源分配问题。上述这些问题于分享方案底下会更为明显。直至目前为止,如何决定核准量仍为一尚未解决的问题,电信业者可自行设计核准量的决定方法。本文基于同一分享方案底下使用者们的过去使用记 录,提出一个新的方法来动态地分配每位使用者的核准量。实验结果显示,在不可预期之使用者行为使用环境底下,本文所提出之方法可较其他方法节省14%之讯号量。 For simplifying billing and limiting data usage, Shared Plan (SP) is now a popular plan provided by telecommunications operators. Based on the 3rd Generation Partnership Project (3GPP) specifications, Online Charging System (OCS) has to determine the Granted Unit (GU) and create reservations per session before a service is delivered by the serving network to a User Equipment (UE). However, fixed GUs cannot adapt to dynamic consumer behaviors, which usually require dynamic GUs. Clearly, giving small GUs will incur too many signaling messages for making reservations, but giving excessive GUs will cause unbalanced distribution of resources, especially in SP cases. How to determine GUs is an open issue that can be self-defined by telecommunications operators. In this thesis, we propose a new scheme for dynamically assigning GUs to UEs belonging to the same SP, based on their historical data usage and total monthly data allowance. Simulation results show that our scheme can substantially save signalings by 14% compared to other schemes under unpredictable behaviors. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT070256537 http://hdl.handle.net/11536/127479 |
显示于类别: | Thesis |