Packet data convergence protocol data recovery
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsMatteo Fiorani, Panagiotis Saltsidis
Life of this patent
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Abstract
Embodiments described herein provide methods and apparatuses for synchronizing radio link control re-establishment between a user equipment (UE) and a base station distributed unit (DU) with Packet Data Convergence Protocol PDCP data recovery. A method performed by a Control Plane data processing apparatus comprises: obtaining an indication that an uplink and/or downlink outage has occurred between the base station DU and the UE; and transmitting a request to a user plane, UP, data processing apparatus to instruct the UP data processing apparatus to retransmit any data protocol units previously transmitted to the UE which were unacknowledged by the UE.
Claims18
A method performed by a control plane (CP) data processing apparatus for synchronizing radio link control re-establishment between a user equipment (UE) and a base station distributed unit (DU) with Packet Data Convergence Protocol (PDCP) data recovery, the method comprising:
- obtaining an indication that an uplink and/or downlink outage has occurred between the base station DU and the UE;
- and
- transmitting a request to a user plane (UP) data processing apparatus to instruct the UP data processing apparatus to retransmit, via the base station DU, any data protocol units previously transmitted to the UE which were unacknowledged by the UE.
A method performed by a user plane (UP) data processing apparatus for synchronizing radio link control (RLC) re-establishment between a user equipment (UE) and a base station distributed unit (DU) with Packet Data Convergence Protocol (PDCP) data recovery, the method comprising:
- receiving a request, from a control plane (CP) data processing apparatus, to retransmit any data protocol units previously transmitted by the base station DU to the UE which were unacknowledged by the UE;
- and
- responsive to receiving the request, retransmitting to the UE, via the base station DU, any data protocol units previously transmitted to the UE which were unacknowledged by the UE.
A control plane (CP) data processing apparatus for synchronizing radio link control re-establishment between a user equipment (UE) and a base station distributed unit (DU) with Packet Data Convergence Protocol (PDCP) data recovery, the CP data processing apparatus comprising processing circuitry configured to:
- obtain an indication that an uplink and/or downlink outage has occurred between the base station DU and the UE;
- transmit a request to a user plane (UP) data processing apparatus to instruct the UP data processing apparatus to retransmit, via the base station DU, any data protocol units previously transmitted to the UE which were unacknowledged by the UE.
A user plane (UP) data processing apparatus for synchronizing radio link control (RLC) re-establishment between a user equipment (UE) and a base station distributed unit (DU) with Packet Data Convergence Protocol (PDCP) data recovery, the UP data processing apparatus comprising processing circuitry configured to:
- receive a request, from a control plane (CP) data processing apparatus, to retransmit any data protocol units previously transmitted to the UE which were unacknowledged by the UE;
- and
- responsive to receiving the request, retransmit to the UE, via the base station DU, any data protocol units previously transmitted to the UE which were unacknowledged by the UE.
Dependencies are inferred from the claim text.