LTE コアネットワークシステムの開発 LTE Core Network System 勝又貞行丹下透新井国充 Sadayuki Katsumata Toru Tange Kunimitsu Arai 木村建夫 Takeo Kimura 中野雅俊 Masatoshi Nakano 要 LTELTE EPC3GPP LTE Release 9 EPC GUI LTE Abstract JRC has developed LTE Core Network System which consist of 2 major devices of both EPC Evolved Packet Core device and LTE Network Management System called EMS Element Management Systemin order to realize Compact LTE system for small and middle class communication operators. EPC supports standards features and interfaces comply with 3GPP LTE Release 9 in one box, and is installable on universal OS operating system and general hardware platform such as ATCA Advanced Telecommunications Computing Architecture server. Also, JRC EPC offers easy to operate GUI to enable easy configuration, for fast operation. Therefore JRC s EPC enables to fast entry of new LTE networks with minimum CAPEX/OPEX. EMS enables total management of installation, configuration, operation, and maintenance for LTE network devices such as enodeb Evolved Node BEPC, and other network elements. 旨 1. まえがき 2.EPC の機能 3 3G4 4G LTE LTE-Advanced 5 5G 4G LTE EPC Evolved Packet Core EPC CAPEXOPEX EPCLTE LTE enodeb Evolved Node B enodeb EPC LTE EMS Element Management System,EMS EPC EMS EPCLTE MME HSS IP P-GW IP S-GW EPC 1 日本無線技報 No.67 2016-56
般論文Web 図 1 EPC 機能エンティティ Fig.1 EPC function entities 1 MME Mobile Management Entity enodeb Diameter Client Diameter HSSQoS S-GW 2 HSS Home Subscriber Server Diameter Server Diameter QoS MME 3 P-GW Packet Data Network Geteway IP QoS Diffserv Code Point Proxy Mobile IPHA Home Agent 4 S-GW Serving Gateway MME QoS Diffserv Code Point QoS ( 技術レポート )LTE 1 表 1 各インタフェース定義と説明 Table 1 Interface definition and description コアネットワークシステムの開発一LTE-Uu UE enodeb 13 X2 S1-MME S1-U S5 S6 Gx SGi 3.EPC の特長 enodeb enodeb MME enodeb S-GW S-GW P-GW QoS Diffserv Code Point PIMP DHCP MME HSS Diameter QoS P-GW P-GW UE P-GW EPC 1EPC EPC3GPPLTE Release 9 LTE 2 ATCA Advanced Telecommunications Computing Architecture EPC 5 日本無線技報 No.67 2016-57
図 2 Advaned TCA ベース EPC 装置外観 Fig.2 EPC device based on ATCA server 2 EPC ROI 3 IP IP P-GW IP DynamicHSS IP Fixed IP Static 図 3 (a) 端末登録のWeb 画面例 Fig.3 Subscriber Configfuration page screenshot 4Web EPC Web 3 LTE 図 3 (b) 端末リストのWeb 画面例 Fig.3 Subscribers List page screenshot 4.EMSの機能 EMSHTTP PCWeb EMSEMS LTE Radio Access Network 4EMS EMS 日本無線技報 No.67 2016-58
般論文eNode Internet IMS EMS Client EMS Server adio Access Network EPC ( 技術レポート )LTE 2 enodeb EPC LTE EMS EMS EMS enodeb コアネットワークシステムの開発一 enodeb EMS enodeb enodeb E 3 EMS enodeb EPC LTE EMS 5 図 4 EMS 配置イメージ Fig.4 EMS location in LTE netwrok EMS 2 5.EMS の特長 表 2 Table 2 EMS 機能概要 EMS Function e-mail enodeb enodeb enodeb enodeb LTE EMSeNodeBLTE EPC 図 5 EMSトポロジ画面 Fig.5 EMS topology screenshot 4 EPC enodeb CPU 6 EPC 1 enodeb EPC EMS EMS 日本無線技報 No.67 2016-59
参考文献 1 4G No.67 pp.46-51 2016. 2LTE No.67 pp.52-55 2016. 図 6 EPCのネットワークトラフィックグラフ画面 Fig.6 EPC network traffic graph screenshot 5 6.EMSのソフトウェア構成 7 EMS EMSNMS EMS JRC-EMS Server JRC-EMS Agent JRC- EMS Web Component enodeb Setting Web EMS API enodeb 用語一覧 3GPP: Third Generation Partnership Project CAPEX: Capital Expenditure CPU: Central Processing Unit DHCP: Dynamic Host Configuration Protocol EMS: Element Management System EPC: Evolved Packet Core HSS: Home Subscriber Server HTTP: Hyper Text Transfer Protocol IP: Internet Protocol IMS: IP Multimedia System LTE: Long Term Evolution MME: Mobility Management Entity NMS: Network Management System OPEX: Operational expenditure P-GW: Packet Data Network Gateway PDCP: Packet Data Convergence Protocol ROI: Return on investiment S-GW: Serving Gateway UE: User Equipment 図 7 EMSソフトウェア構成 Fig.7 EMS software diagram 7. あとがき EPC EMS EPC EMS LTE MWC2015 日本無線技報 No.67 2016-60