| 115 | | |
| 116 | | Ray on 3/16: Expect standard range information from NEC in 2+ weeks. [[BR]] |
| 117 | | Max on 3/16: Should consider planning tools seen at 3G trade shows, to estimate ranges. [[BR]] |
| 118 | | |
| | 115 | Need to be able to estimate the expected range and capacity of a completed installation, and how this varies with antenna height, to guide each campus in their planning. Also, how this varies depending on the number of clients and their data rates.[[BR]] |
| | 116 | Then, need to verify estiamtes with measurements at various sites. [[BR]] |
| | 117 | |
| | 118 | |
| | 119 | Ivan Seskar: Have some data from Rutgers WINLAB site, and expect more when Rutgers Bush Campus site is in service. Can configure split between downstream and upstream. With 10MHz bandwidth, limited to approximately 20Mbps total. Have seen range approximately x10 of WiFi range. Have seen downstream of 2+Mbs at 2km combined with 7Mbs at short distances. [[BR]] |
| | 120 | |
| | 121 | Ray Raychaudhuri on 3/16: Expect standard range information from NEC in 2+ weeks. [[BR]] |
| | 122 | |
| | 123 | Max Ott on 3/16: Should consider planning tools seen at 3G trade shows, to estimate ranges. [[BR]] |
| | 124 | |
| | 125 | Tony Michel on 3/30: Preparing plan to measure base station range and capacity at BBN Technologies site, starting with initial checkout. |
| 124 | | || 4.2 || Range and capacity: Need to be able to estimate the expected range and capacity of a completed installation, and how this varies with antenna height, to guide each campus in their planning. Also, how this varies depending on the number of clients and their data rates. || Michel, Seskar || 2/23/10 || - || - || Seskar: Have some data from Rutgers WINLAB site, and expect more when Rutgers Bush Campus site is in service. Can configure split between downstream and upstream. With 10MHz bandwidth, limited to approximately 20Mbps total. Have seen range approximately x10 of WiFi range. Have seen downstream of 2+Mbs at 2km combined with 7Mbs at short distances. NEC will not release their range info. Need to check open WiMAX literature, and measure. || |
| 125 | | || 4.3 || GPS receiver: NEC documentation shows a GPS receiver mounted along with the antenna, and connected to the NW INTFC on the IDU. It provides precise timing signals to the base station. On 2/23, we agreed to include in the kit, since total cost is likely to be less than $125, and it should be installed at the start. || Michel, Seskar || 2/23/10 || - || - || Need to engineer active antenna and cable for up to 100m, and need a BOM for active antenna, arrestor and cable. Candidate is [http://www.antenna.com/apg_products.cgi?id_num=11092 PCTel GPS-TMG-SP-40N] || |
| | 131 | || 4.2 || Range and capacity: Need to be able to estimate the expected range and capacity of a completed installation, and how this varies with antenna height, to guide each campus in their planning. Also, how this varies depending on the number of clients and their data rates. Then, need to verify at sites,|| Michel, Seskar, Rangarajan || 2/23/10 || - || - || On 3/16: Expect standard range information from NEC in 2+ weeks. Ott on 3/16: Should consider planning tools seen at 3G trade shows, to estimate ranges. Michel on 3/10: Preparing emasurement plan. || |
| | 132 | || 4.3 || GPS receiver: NEC documentation shows a GPS receiver mounted along with the antenna, and connected to the NW INTFC on the IDU. It provides precise timing signals to the base station. || Michel, Seskar || 2/23/10 || 2/23/10 || Agreed to include in the kit, since total cost is likely to be less than $125, and it should be installed at the start. || Next: Need to engineer active antenna and cable for up to 100m; see Kit Issues || |
| 465 | 472 | || 6.4 || Kit delivery sequence: It has been planned that three kits will be delivered during Spiral 2, and the remaining four during Spiral 3. It has been planned that the first three kits will be delivered to campuses/sites where there is easy access for support, i.e., at nearby locations: NEC Labs America, Columbia University, and Polytechnic Institute of NYU. However, it would also make sense to deliver a kit ONLY when the campus/site has received an FCC license, and is ready to install the kit. Thus, the delivery sequence may also depend on campus status. || Mussman, Seskar, team || - || - || - || - || |
| 466 | 473 | || 6.5 || Kit contents: Agreed to move power supplies into category provided by Rutgers, since cost is low ($115); also, use only larger supply. Need to add GPS antenna parts, when known. || Michel, Mussman || 2/23/10 || - || - || - || |
