LTE移動通信システムのフィールドトライアル

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けんじつなかわ
5 years ago
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1 LTE Field Trial for LTE Mobile Network System 鬼柳広幸箕輪守彦あらまし LTELong Term Evolution LTE 1.7 GHz 5 MHzEnd to EndLTE 34.6 Mbps9.5 Mbps IP LTE Abstract The Long Term Evolution (LTE) mobile network system is a wireless broadband infrastructure that supports the construction of a smart ubiquitous society. Fujitsu has conducted a field trial to verify this LTE system that provides a field-proven platform for the forthcoming Cloud age, so that it can be promptly established. In this field trial, 5 MHz bandwidth in the 1.7 GHz band was used to construct an end-to-end LTE system for the global market and the area design was checked and its performance evaluated. Throughput performance of up to 34.6 Mbps for downlink and 9.5 Mbps for uplink was achieved, which confirmed that the system had adequately high performance in the field. In addition, operations of applications conventionally used in fixed IP networks were checked in the LTE system to verify they are ready for the Cloud age. This paper describes the test results of the LTE field trial. 442 FUJITSU. 62, 4, p , 2011

2 まえがき LTELong Term Evolution LTE NTT Xi LTE フィールドトライアルの環境構築 1.7 GHz5 MHz 1.2 km/ 表 -1 LTE OFDMAOrthogonal Frequency Division Multiple AccessSC-FDMA Single Carrier-Frequency Division Multiple Access LTE / MIMO XiXi/NTT -1 / 37 DL/UL MHz/ MHz 5 MHz 43 dbm Tx/Rx 2/2 DL OFDMA UL SC-FDMA TM4 MIMO Closed-loop with rank adaptation DLUL Multiple Input Multiple Output 22 Closed-loopPrecoding MIMO 5 MHz 35 Mbps 9.5 Mbps LTE LTEEPCEvolved Packet Core End to End37 LTE EPC LTE 図 LTE RRHRemote Radio Head フィールドトライアルの実施と実験成果スループット性能 V/H2 30 m 図 -2a LTE 表 -2/ MIMO 1 2V 2 m-2b 1.5VV 図 -3a b2 図 -4 FUJITSU. 62, 4 07,

3 アテ BBUBase Band Unit RRH EPC #3 トーアトー LTE #2 #1 1 トーアテ BBU イトラト RRH アテ BBU #2 #1 トー #2 RRH # LTE Fig.1-LTE system structure. a b -2 Fig.2-eNodeB and test car. F G VV45 図 -5S E Mbps Mbps FUJITSU. 62, 4 07, 2011

7 db SINRH 29.8 db 36.8 db 0.64 0.18-4 Fig.4-Drive test route.

4 F G45 35 Mbps VV 25 Mbps 表 -3 V/H SINRSignal to Noise Interference Ratio VV45 20 エリアおよびハンドオーバ評価 LTE avv b45-3 Fig.3-UE antenna layout. -3 VV Mbps 21.7 Mbps 27.2 Mbps 34.1 Mbps SINRV 31.8 db 37.7 db SINRH 29.8 db 36.8 db Fig.4-Drive test route. スルート Mbps S A B C D E F 通 V V 45 通 G m -5 Fig.5-DL throughput. FUJITSU. 62, 4 07,

5 H.O H.O 表 H.O 95 H.O H.O H.OH.O H.O H.O H.O 屋内性能図 MbpsLTE MIMO Energy Savings Energy SavingsESSONSelf-Organizing Network 3 1ES 2 表 -5ES 3 RSRPReference Signal Received Power ESRSRP offbrsrp RSRP-120 dbm ES ES Fig.6-DL throughput (Indoor Env.). -5ES ES RSRP-120 dbm 446 FUJITSU. 62, 4 07, 2011

TV イ -82010 Fig.8-Wireless Japan 2010 exhibition.

6 TV イ Fig.8-Wireless Japan 2010 exhibition. 自然エネルギー供給 2 図 -7 アプリケーション動作環境の検証 LTE IPTV IP-9500 LTE LTE TV 図 -8 LTETV LTE -7 Fig.7-Hybrid power generater. TVLTE むすび End to EndLTE FUJITSU. 62, 4 07,

7 Energy Savings IP LTE 参考文献 1 LTE MIMO 2010 B LTE 2010 B-5-44 著者紹介鬼柳広幸 ( きやなぎひろゆき ) 箕輪守彦 ( みのわもりひこ ) 448 FUJITSU. 62, 4 07, 2011

屋外型LTE無線基地局装置（eNodeB）

屋外型LTE無線基地局装置（eNodeB） LTE Outdoor LTE Infrastructure Equipment () 渡辺君夫町田守あらまし 3GPPLTE LTE Abstract Fujitsu has developed outdoor LTE infrastructure equipment () based on the specifications in the 3rd Generation Partnership