Israeli WiFi chip vendor Celeno Communications landed another European deal this week, securing Belgian operator Telenet to add the OptimizAIR software to its new WiFi marketing service Flow – which is all about managing air time to allocated devices. However, the main topic of conversation in last week’s IBC event was not Celeno’s new account win, but how it is facing up to fierce rival AirTies – discussing the key differences between their competing product lines in a multi-AP marketplace, representing a multi-billion dollar opportunity. AirTies has pioneered a method of mesh networking, using secret behind the scenes techniques to stem the bad apple and sticky client problems that consumer devices can cause in a network, but Celeno’s CEO, Gilad…