17253031. PREVENTING / MITIGATING PACKET LOSS IN IAB SYSTEMS simplified abstract (Telefonaktiebolaget LM Ericsson (publ))

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PREVENTING / MITIGATING PACKET LOSS IN IAB SYSTEMS

Organization Name

Telefonaktiebolaget LM Ericsson (publ)

Inventor(s)

Oumer Teyeb of Solna (SE)

Torsten Dudda of Aachen (DE)

PREVENTING / MITIGATING PACKET LOSS IN IAB SYSTEMS - A simplified explanation of the abstract

This abstract first appeared for US patent application 17253031 titled 'PREVENTING / MITIGATING PACKET LOSS IN IAB SYSTEMS

Simplified Explanation

The abstract describes a method performed by a wireless device for transmitting PDCP (Packet Data Convergence Protocol) packets over a multi-hop path to a receiver. The method involves retransmitting PDCP packets that have not been received, even if they have been acknowledged by a lower protocol layer.

  • The method starts by receiving PDCP signalling indicating that at least one transmitted PDCP packet has not been received.
  • The PDCP signalling can be in the form of a PDCP status PDU (Protocol Data Unit), PDCP data recovery, or PDCP re-establishment RRC (Radio Resource Control) signalling.
  • In response to receiving the PDCP signalling, the wireless device retransmits the PDCP packet(s) that have not been received.
  • This retransmission is done regardless of whether the transmitted PDCP packet(s) have been acknowledged by a lower protocol layer.
  • The method can also be performed by a network node.

Potential applications of this technology:

  • Wireless communication systems using multi-hop paths can benefit from this method.
  • It can be applied in scenarios where reliable transmission of PDCP packets is crucial, such as in industrial IoT networks or mission-critical communications.

Problems solved by this technology:

  • Ensures reliable transmission of PDCP packets over multi-hop paths.
  • Addresses the issue of PDCP packets not being received, even if they have been acknowledged by lower protocol layers.
  • Helps maintain the integrity and efficiency of wireless communication systems.

Benefits of this technology:

  • Improves the overall reliability and performance of wireless communication systems.
  • Reduces the chances of data loss or corruption during transmission.
  • Enhances the quality of service for applications relying on PDCP packet transmission.


Original Abstract Submitted

A method is performed by a wireless device for transmitting PDCP packets over a multi-hop path to a receiver, in accordance with particular embodiments. The method begins with receiving PDCP signalling indicating that at least one transmitted PDCP packet has not been received. For example, the PDCP signalling may comprise a PDCP status PDU, or may comprise PDCP data recovery or PDCP re-establishment RRC signalling. In response to receiving the PDCP signalling indicating that at least one transmitted PDCP packet has not been received, the wireless device retransmits the at least one transmitted PDCP packet that has not been received, even if said transmitted PDCP packet has been acknowledged by a lower protocol layer. A method is also performed by a network node in accordance with particular embodiments.

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