User's Manual

U-NII Config & User Guide 5.2 Axxcelera Broadband Wireless
12.1.1.2 BHM initbridge ...........................................................................................118
12.1.1.3 BHM initr1483............................................................................................118
12.1.1.4 BHM system.conf ......................................................................................118
12.1.2 BHS Configuration Files ................................................................................119
12.1.2.1 BHS resolve...............................................................................................119
12.1.2.2 BHS initbridge............................................................................................119
12.1.2.3 BHS system.conf.......................................................................................119
12.1.2.4 BHS initr1483 ............................................................................................119
12.1.3 Troubleshooting .............................................................................................120
12.1.3.1 Can’t ping the radio from the terrestrial interface. .....................................120
12.1.3.2 Can’t ping the radio across the wireless link. ............................................120
12.2 ATM Extender......................................................................................................121
12.2.1 BHM Configuration Files ...............................................................................122
12.2.1.1 BHM resolve ..............................................................................................122
12.2.1.2 BHM system.conf ......................................................................................122
12.2.1.3 BHM initswitchcli........................................................................................123
12.2.2 BHS Configuration Files ................................................................................123
12.2.2.1 BHS resolve...............................................................................................123
12.2.2.2 BHS system.conf.......................................................................................124
12.2.2.3 BHS initswitchcli ........................................................................................124
12.2.3 Troubleshooting .............................................................................................124
12.2.3.1 Can’t ping the radio from the terrestrial interface ......................................124
12.2.3.2 Can’t ping the radio across the wireless link. ............................................126
13 RF Design and Planning...........................................................................................128
13.1 Overview ..............................................................................................................128
13.2 The U-NII & ISM Channel Plan ...........................................................................128
13.3 Air Interface.........................................................................................................128
13.4 Wireless MAC......................................................................................................128
13.4.1 Downstream burst..........................................................................................129
13.4.1.1 Access Point Turnaround Time (ATT).......................................................129
13.4.1.2 Frame Descriptor Header (FDHDR)..........................................................129
13.4.1.3 Reservation Grant (RG) ............................................................................129
13.4.1.4 Downstream Acknowledgement (DACK) ..................................................130
13.4.1.5 Downstream Data Cells (DCELL)..............................................................130
13.4.1.6 Subscriber Turnaround Time (STT) ..........................................................130
13.4.1.7 Reservation Request (RR) ........................................................................130
13.4.1.8 Upstream Acknowledgement (UACK).......................................................130
13.4.1.9 Upstream Cell (UCELL/UCELLR) .............................................................130
13.5 Delay Compensation ..........................................................................................130
13.6 RF Channels spacing and output power..........................................................132
13.7 TDD (Time Division Duplex)...............................................................................132
13.8 AP and SU Specifications..................................................................................133
13.8.1 AP/SU/Extender Functional Block Diagram ................................................133
13.8.2 Radio Specifications ......................................................................................134
13.8.3 Subscriber Unit Antenna ...............................................................................135
13.8.4 Access Point Antenna ...................................................................................136
13.8.5 Extender Antenna...........................................................................................137
13.9 Topology Types ..................................................................................................138
13.10 Interference Types..............................................................................................139
13.10.1 Type 1 Interference ....................................................................................140
13.10.2 Type 2 Interference ....................................................................................140
13.10.3 Type 3 Interference ....................................................................................141
13.10.4 Type 4 Interference ....................................................................................141
13.11 Recommended Channel Plans ..........................................................................142
13.11.1 Six-Sector, Three-Frequency Plan ...........................................................142
13.11.2 Six-Sector, Six-Frequency Plan................................................................143
March 10, 2003 Company Confidential Page 9 of 149