Patent ID: 9572128
Date: 2017-02-14
CPC Classifications: H04W

Claim:
1. A method for performing a ranging for Machine To Machine (M2M) communication, comprising: periodically receiving, by a M2M device, a system configuration descriptor message including first dedicated ranging channel allocation information; entering, by the M2M device, into an idle mode; receiving, by the M2M device in the idle mode, a paging message from a base station, the paging message including second dedicated ranging channel allocation information and a dedicated channel allocation timer; and transmitting, by the M2M device, a ranging code to the base station in accordance with the second dedicated ranging channel allocation information when the second dedicated ranging channel allocation information is valid, wherein the second dedicated ranging channel allocation information included in the paging message is valid within a time duration indicated by the dedicated channel allocation timer when the second dedicated ranging channel allocation information in the paging message is different from the first dedicated ranging channel allocation information allocated via the system configuration descriptor message, and wherein the first and second dedicated ranging channel allocation information are used for performing a ranging procedure.