Patent ID: 7957352

Claim:
A wireless device operable to communicate with first and second wireless communication networks of different radio access technologies, comprising: a first modem processor operative to perform processing for a pending call with the first wireless network implementing a first radio access technology from 3rd Generation Partnership Project (3GPP), receive a first message from the first wireless network to perform handoff to the second wireless network, wherein the first message comprises a list of target cells in the second wireless network determined by the first wireless network to have a target cell location corresponding to a location of the wireless device, transmit a search message comprising a list of frequencies corresponding to the target cells to search for in the second wireless network, and provide notification of the handoff; and a second modem processor operative to receive the search message and determine pilot acquisition for the list of frequencies and additional frequencies not included in the list of frequencies to produce a search result comprising the list of frequencies and the additional frequencies, acquire synchronization and timing for each cell for which pilot acquisition is determined, exchange a second message with the second wireless network implementing a second radio access technology from 3rd Generation Partnership Project 2 (3GPP2) to establish a new call with the second wireless network via one of the cells in the search result, perform a call setup procedure with the second wireless network to establish the new call, and perform processing for the new call with the second wireless network.