下一代移动网络架构.ppt

1、Next Mobile Network Architecture,2012 02 15,这篇文章提出了下一代网络（NMN）的一种通用结构，NMN由四个平台组成：先进的无线接入AMA、光纤移动网络OMN、虚拟移动网络VMN、服务交付网络SDN。四个平台的提出具有革命性的意义。NMN的目标是旨在提供最优的服务，可以从三个方向深入描述：多媒体化、泛在化、全球化。这篇文章描述了关键下一代网络组成技术的研究，比如：先进的无线传输、光纤网、虚拟网的移动性管理、泛在服务管理。,如今，在日本，有一亿两百万3G用户，在世界上有8亿3千万用户在使用3G。3G已经从WCDMA演进到了3.5G（HSPA），已经接近最

2、后一个阶段3.9G。3G核心网已经从GSM电路交换演进为基于IP的分组交换。 这篇文章第二部分讨论了NMN可以实现的三种方向的服务，第三部分描述了一般NMN结构所支持的服务方向，第四部分给出了NMN的一些关键技术和研究。第五部分做出了总结。,三个服务目标,多媒体服务方向 泛在服务方向 全球服务方向,多媒体服务方向: 由于IMT-A旨在获得1Gbps的吞吐量，NMN讲提供同HD-TV同等质量的视频服务。鉴于可以IMT可忽略的信号延迟与NMN提供的智能化服务，将会出现一些复杂的服务，比如：,泛在服务方向 : For example, a woman may carry only cosmetic

3、items and an ornament (Fig.3). She does not need a handset because the ornament works as a mobile terminal. Each cosmetic item offers either mobile terminal functionality or has an RF-ID. In this example, her compact mirror is also a basic mobile terminal that provides visual display functionality.

4、The lipstick has a wireless sensor to track the amount remaining. Such information is reported to NMN via the ornament. NMN will inform her of a brand new lipstick that suits her and the location of the nearest shop through the compacts mirror when she walks around the shopping center.,全球服务方向: NMN i

5、s intended to offer the same services with same quality as offered by home network wherever users go around the world. For example, lets assume that a Japanese boy tries to talk with a Parisienne in Paris. The mobile terminal talks to the Parisienne on his behalf in real time by recognizing his Japa

6、nese, translating Japanese to French, and synthesizing the French equivalents. Note that his voice model has already been generated in advance.,NMN GENERAL ARCHITECTURE,To realize sophisticated services along with the service directions mentioned, we propose the general architecture of NMN shown in

7、Fig.5. NMN is composed of four planes: Advanced Mobile Access (AMA), Optical Mobile Network (OMN), Virtual Mobile Network (VMN), and Service Delivery Network (SDN).,AMA,Figure 6 shows the evolution in mobile radio access system capabilities. The peak user data rate in IMT-A will be achieved to 1 Gbp

8、s maximum. Furthermore, toward the next generation system, it may become possible to realize higher peak user data rate, e.g., 10 Gbps maximum. For the base station of AMA, we are first targeting 1 Gbps peak user data rate with wider service areas. By introducing Femto cells to the indoor environmen

9、t to meet dense local traffic needs effectively, and also introducing Relay cell base stations for service area complementation, much more flexible area expansion can be realized at lower cost.,OMN,随着多媒体服务的应用，网络之间交换的数据量逐渐增大，随着移动接入的宽带化，为了用更小的功率达到所要求的服务质量，就要使用光纤技术。 NMN数据量包括因特网流量、来自/流向外部网络的流量、移动网络中端到端的

10、流量。随着一些新服务的出现（如视频共享），端到端的流量逐渐增大，因此，NMN传输网络需要个数据交换路径一起连接到外部网络。,SDN,The SDN in NMN will evolve to support further advanced network value added services (Fig.8). For example, Mobile Ubiquitous services enhanced by dynamic object management will make the most of cellular terminal mobility. To realize ob

11、ject management, a RF-ID reader equipped with wireless communication and GPS, will acquire the RF-ID information around the user and send the information to the ubiquitous information management server in SDN. This RFID reader function could be placed in the users carry bag as described in Section I

12、I.B.,VMN must be flexible in terms of dynamic configuration/ reconfiguration to utilize the limited resources efficiently while satisfying the service requests. Moreover, VMN needs to be capable of utilizing the physical networks of multiple OMNs across the world to realize global services. Successf

13、ul implementation will trigger a business paradigm shift. For example, in Figure 10, VMN1 is providing home services in Japan while VMN2 is providing the same sets of the home services to a specific area of France in response to the users request. This minimizes the need to keep full sets of physica

14、l resources in areas that users are not visiting while ensuring that the guaranteed services are available wherever the user is visiting.,VMN:,CONCLUSION This paper proposed a general architecture for NMN; it combines AMA, OMN, VMN, and SDN. NMN aims at offering sophisticated services while meeting

15、the trends of multimedia, ubiquitous, and global service. This paper described major research subjects on the key components such as advanced radio transmission, optical mobility management, virtual mobile networks, and ubiquitous service management in NMN. Currently, both mobile and fixed networks are evolving toward the All-IP network. Nevertheless, since their research and standardization activities have been conducted separately, the result is that we have similar, but different, All-IP