| CPC H04W 60/04 (2013.01) [H04W 68/02 (2013.01)] | 15 Claims |

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1. A method performed by a wireless device in a wireless communication system, the method comprising:
performing a registration procedure to be registered in a first network and a second network;
receiving, from the second network, timing information related to the second network comprising a time period; and
performing an idle mode operation in the first network in the time period while skipping to monitor scheduling information for the second network in the time period,
wherein the idle mode operation comprises at least one of:
monitoring a paging;
performing a random access; or
performing an idle mode measurement.
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