Patent ID: 8971270
Filing Date: 2015-03-03
Classification: H04W

Abstract:
1. A method for paging at least a first, a second, and a third group of devices, attached to at least one radio control entity (eNB) in a network, the method comprising the steps of: assigning a group paging target identity and a group paging resource indication during paging to all devices of the first group of devices; transmitting from an entity in the network a first paging message to the at least one radio control entity, the first paging message comprising the group paging target identity and the group paging resource indication, based on the received group paging resource indication, calculating by the at least one radio control entity transmission resources on a radio channel for transmitting a second paging message to the devices of the first group, transmitting by the at least one radio control entity the second paging message, said second paging message comprising the group paging target identity at the calculated transmission resources of the radio channel, receiving by the devices of the first group the second paging message at the calculated transmission resources of the radio channel, assigning a second group paging target identity to the devices of the first group, second group and third group, assigning a second group paging resource indication to the devices of the second group used by the devices of the second group to calculate the radio channel resources to receive paging messages, wherein the second group paging resource indication is determined such that a re-transmission of the second paging message transmitted for the first group of devices is received by the devices of the second group, assigning a third group paging resource indication to the devices of the third group used by the devices of the third group to calculate the radio channel resources to receive paging messages, wherein the third group paging resource indication is determined such that a second re-transmission of the second paging message transmitted for the first group of devices is received by the devices of the third group, wherein the third group paging resource indication differs from the second group paging resource indication by the same amount as the second group paging resource indication differs from the group paging resource indication, wherein the radio control entity performs re-transmissions of the second paging message based on a cycle parameter, and wherein the devices of the first, second and third group use a second cycle parameter for calculating the radio channel resources to receive paging messages, wherein the second cycle parameter is three times the amount of the cycle parameter used by the radio control entity.