HYPERFRAME NUMBER DESYNCHRONIZATION RECOVERY MECHANISM

摘要

The disclosure provides for recovering from radio link desynchronization. A network node may determining a first validity rate of a first plurality of protocol data units (PDUs) including a length indicator transmitted over the radio link using ciphering based on a hyperframe number and determining a second validity rate of a second plurality of PDUs without a length indicator transmitted over the radio link using ciphering based on the hyperframe number. The network node may detect desynchronization of the hyperframe number based on the first validity rate and the second validity rate. The network node may initiate a reset procedure to set a new hyperframe number for the radio link. The network node may detect desynchronization when the first validity rate is less than a first threshold, and the second validity rate is greater than or equal to a second threshold.

主权项

1. A method for recovering from radio link desynchronization, comprising:
determining a first validity rate of a first plurality of protocol data units (PDUs) including a length indicator transmitted over the radio link using ciphering based on a hyperframe number; determining a second validity rate of a second plurality of PDUs without a length indicator transmitted over the radio link using ciphering based on the hyperframe number; detecting a desynchronization of the hyperframe number based on the first validity rate and the second validity rate; and initiating a reset procedure to set a new hyperframe number for the radio link based on detecting the desynchronization.