Deployment and operation
Network
Robots, the scheduler server and peripherals all need fixed IP addresses. Cable the server and third-party devices; the robots use WiFi.
Item
Requirement
Bands
2.4 GHz and 5 GHz
Coverage
Full coverage; −40 to −65 dBm in main areas, ≥−65 dBm anywhere, SNR ≥20 dB
Latency
1,000+ ICMP packets of 1,024 bytes: loss ≤1%, mean round trip ≤50 ms, max ≤500 ms
Throughput
≥10 Mbps up and down per user; ≥500 kbps average with ten or more concurrent users
Roaming
Seamless roaming between APs within 200 ms
VPN
IPSec, SSL or L2TP; latency below 100 ms, loss below 2%, ≥300 KB/s
Signal strength, packet loss and roaming handover time are measured by our engineers during the survey. When vehicles stop for no visible reason, the usual causes are weak signal, slow roaming or high packet loss, so testing must cover the whole operating area, especially dense racking, metal racks and steel beams, and transitions between floors.