Patent ID: 9014714
Filing Date: 2015-04-21
Classification: H04L,H04W

Abstract:
1. A method of providing location privacy of a mobile station, the method performed by the mobile station and comprising: transmitting a deregistration request message to a first base station, the deregistration request message requesting entry to an idle mode; receiving a deregistration command message granting the entry to the idle mode from the first base station in response to the deregistration request message, the deregistration command message including a temporary identifier; transmitting a ranging request message to a second base station in order to perform a location update by using the temporary identifier; and receiving a ranging response message from the second base station in response to the ranging request message, wherein the temporary identifier is temporarily used to provide security of a media access control (MAC) address of the mobile station in a paging group to which the first and the second base station belong; and wherein the temporary identifier is used instead of the MAC address of the mobile station in order to protect the location privacy of the mobile station in the paging group.