 each MS location is randomly distributed with uniform distribution. The serving cell of each MS is determined in two steps due to the wrap-around nature of the cell layout. The first step is to determine the 19 shortest-distanced cells for each MS from all 7 logical cell clusters, and the second step is to determine the serving cell/sector among the nearest 19 cells for each MS based on the strongest link according to path-loss and shadowing. To determine the shortest-distance cell for each MS, the distances between the MS and all logical cell clusters are calculated and the 19 cells with a shortest distance in all 7 cell clusters are selected. The serving cell for each MS provides the strongest link with a strongest received long-term signal power. It should be noted that the shadowing experienced on the link between the MS and cells located in different clusters is the same. CHAPTER 12 Performance of IEEE 802. 16m and 3GPP LTE-Advanced 12.7 IMT-ADVANCED EVALUATION METHODOLOGY AND BASELINE CONFIGURATIONS The IMT-Advanced candidate technologies were required to be evaluated under at least three test environments. The ITU-R WP 5D specified a common evaluation methodology, based on which the candidates were required to be configured and assessed against the IMT-Advanced minimum system requirements. Table 12-6 provides the common parameters for the evaluation of radio access tech- nologies as specified by reference [6]. The BS antennas in each sector are assumed to have antenna patterns in azimuth and elevation directions that are given by: Ae(O) -min 12(*) Elevation Direction (12-14) Azimuth Direction where A(A) is the relative antenna gain (in dB) in the direction of 180° <A<180°, 03dB is the 3 dB beamwidth (A3dB==70°), = Am = 20 dB is the maximum attenuation, Ae(0) is the relative antenna gain (in dB) in the elevation direction -90° < 90°, is the elevation 3 dB beamwidth ( = 15°), and is the tilt angle. The value of the antenna tilt angle is assumed to be 0° for InH, 12° for UMi, 12° for UMa, and 6° for RMa test