Patent ID: 8594074

Claim:
A method of operating a wireless terminal capable of communicating with a first network and a second network, the first network being a Long Term Evolution (LTE) network, the method comprising: prior to making a request to participate in a circuit switched call with the second network, the wireless terminal camping on a respective selected cell of each of the first network and the second network and thereby having tuned to both the selected cell for the first network and the selected cell for the second network; making a request to participate in the circuit switched call through the second network; in view of already camping on the selected cell of the second network, establishing the circuit switched call with the second network without making a measurement with respect to a cell of the second network in a time period between the making of the request to participate in the circuit switch call and establishment of the circuit switched call with the second network; and in conjunction with the camping, the wireless terminal performing measurements on cells of the second network in gaps of transmissions with the first network.