Cable and telecom are rivals again with new IoT networks

Comcast and the biggest U.S. carriers are taking their long-running rivalry to the internet of things.The country's largest cable company and telecommunications giants, Verizon and AT&T, have been fighting each other for years in home broadband, business internet service and wireless access. Now they're set to compete over LPWANs, the low-power, wide-area networks that could connect many of the IoT devices of the future.On Wednesday, Comcast said it would launch trials of one LPWAN technolog