rnet Internet Demo client Voice gateway Voice gateway Internet gateway Internet gateway Media server Media Ethernet switch Ethernet switch server Ethernet switch Network Video camera Ethernet Ethernet switch Ethernet switch switch IP phone Demo client IP phone Media server Encode server IP phone Demo client Figure 2.11 The overall structure of the FuTURE TDD trial system. © 2009 by Taylor & Francis Group, LLC Long Term Evolution: 3GPP LTE Radio and Cellular Technology Figure 2.12 The hardware and antenna unit in the FuTURE TDD trial system. introduced. The mobility test was performed between AP1 and AP2, includ- ing a handover test and a high-speed mobile performance test for the terminal. Figure 2.12 shows the antenna deployment in the FuTURE TDD trial system, including the AP, MT, antenna unit, and its field allocation. Figure 2.13 shows the Figure 2.13 The test vehicle of the FuTURE TDD trial system. © 2009 by Taylor & Francis Group, LLC Evolution from TD-SCDMA to FuTURE test vehicle of the FuTURE TDD trial system, which supported vehicle speed up to 50-100 km/h. 2.2.3.3 Field Test Results of FuTURE TDD Trial System For the FuTURE TDD trial network, the campus of Shanghai University of Engineering Science was selected as a typical urban environment with low vehicle speed. The campus map is shown in Figure 2.14. In this map, two-dimensional labels are used for location identifiers in order to facilitate the test process. 2.2.3.3.1 BLER Performance Test In the FuTURE TDD trial network, just as Figure 2.14 shows, four distributed antenna array sites are located at each corner of the campus. For each site, four antennas are set up and eight antennas from two sites are connected to one AP. The test vehicle is equipped with four antennas and moves from point (1, 1) around the campus to point (5, 1). According to instant measurement results, the BLER per- formance of uplink is demonstrated in Figure 2.15. It can be seen that the FuTURE TDD trial system could support a peak data rate of 100 Mb/s along most paths aroun