Patent ID: 9042356
Filing Date: 2015-05-26
Classification: H04L,H04W

Abstract:
1. A method for confirming delivery of group data to a plurality of radio communication devices in a wireless communication system, the method comprising: sending group data to the plurality of radio communication devices; determining a call hang time sufficient to contain a dedicated acknowledgment slot for each of the plurality of radio communication devices; reserving an acknowledgment slot in the determined call hang time for each radio communication device in the plurality; sending an acknowledgment polling signal to each of the plurality of radio communication devices, the acknowledgment polling signal identifying the respective acknowledgment slot that is reserved for each radio communication device to acknowledge receipt of the group data; and receiving an acknowledgment from at least one of the plurality of radio communication devices during its respective reserved acknowledgment slot; and determining whether the acknowledgment received from the at least one of the plurality of radio communication devices identifies a non-receipt of only a portion of the group data; determining a subset of radio communication devices from among the plurality of radio communication devices that sent an acknowledgment identifying the non-receipt of only a portion of the group data; and determining at least one other call hang time sufficient to contain a dedicated acknowledgment slot for each of the radio communication devices in the subset; reserving an acknowledgment slot in the at least one other call hang time for each radio communication device in the subset; sending another acknowledgment polling signal to the radio communication devices in the subset, the another acknowledgment polling signal identifying the respective acknowledgment slot that is reserved for each radio communication device in the subset to acknowledge receipt of the group data; and receiving an acknowledgment from at least one of the radio communication devices in the subset during its respective reserved acknowledgment slot.