RPD UCD refresh for timestamp recovery
Present disclosure describes the techniques for regaining synchronization between the RPD and the PTP server, without resetting RPD, in the event of run time-phase jump experienced at RPD. To do so, said technique discloses identifying a run time phase jump event at a remote Physical device (RPD) and initiating an Upstream Channel Descriptor (UCD) refresh procedure to reconnect the RPD with Precision Time Protocol (PTP) server.
1. A method comprising:
identifying a run time phase jump event at a Remote Physical Device (RPD); and
initiating, an Upstream Channel Descriptor (UCD) refresh procedure, to synchronize the RPD with Precision Time Protocol (PTP) server without resetting the RPD;
wherein the UCD refresh procedure comprises:
sending a request to Converged Cable Access Platform (CCAP) core to re-acquire Orthogonal Frequency Divisional Multiple Access (OFDMA) timestamp; and
receiving OFDMA timestamp snapshot from CCAP core, wherein the CCAP core performs the UCD refresh procedure with current configuration at CCAP core for OFDMA channel.
2. A system comprising:
a Precision Time Protocol (PTP) server;
a Converged Cable Access Platform (CCAP) core; and
a remote Physical device (RPD) operatively connected to the PTP server and the CCAP core, wherein the RPD is configured to:
identify a run time phase jump event; and
initiate, an Upstream Channel Descriptor (UCD) refresh procedure, to synchronize the RPD with the PTP server without resetting the RPD;
wherein to initiate the UCD refresh procedure the RPD is configured to:
send a request to CCAP core to re-acquire Orthogonal Frequency Divisional Multiple Access (OFDMA) timestamp;
receive OFDMA timestamp snapshot, from CCAP core, wherein the CCAP core performs the UCD refresh procedure with current configuration at CCAP core for OFDMA channel.
3. A computer program product comprising a non-transitory tangible computer-readable medium having instructions thereon, the instructions comprising:
code for identifying a run time phase jump event at a remote Physical device (RPD); and
code initiating, an Upstream Channel Descriptor (UCD) refresh procedure, to synchronize the RPD with Precision Time Protocol (PTP) server without resetting the RPD;
wherein the code for UCD refresh procedure comprises:
sending a request to Converged Cable Access Platform (CCAP) core to re-acquire Orthogonal Frequency Divisional Multiple Access (OFDMA) timestamp;
receiving OFDMA timestamp snapshot, from the CCAP core, wherein the CCAP core performs the UCD change procedure with current configuration at the CCAP core for OFDMA channel.