Method For Recovering From PDCP HFN De-Synchronization For VoLTE Call And Data Failure In RLC Layer

摘要

A method and/or device that determines when an erroneous voice packet has been received over the air interface of a cellular communication network, such as a 4G LTE network, and initiates a voice communications re-establishment procedure when a triggering event—based on receptions of erroneous voice packets—has occurred. The voice communications re-establishment procedure is performed to avoid at least a portion of the air interface (i.e., an uplink or downlink of the Uu interface through which the erroneous voice packets have traversed) from becoming non-operational. The triggering event may be the number of consecutive erroneous voice packets received over an uplink or downlink surpassing a threshold or it may be the length of time that has lapsed during receptions of consecutive erroneous voice packets. The triggering event is an indication that an uplink or downlink will most likely become non-operational if voice communications are not re-established.

主权项

1. A method comprising:
determining, by a network element of a cellular network, reception of an erroneous voice packet over an air interface of the cellular network based on at least one step performed by the network element in response to the reception of the erroneous voice packet and in accordance with at least one protocol of the air interface; and initiating, by the network element, a voice communications reestablishment procedure over the air interface upon an occurrence of a triggering event based on received erroneous voice packets.