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US 2019/0357196 A1Published application
Network coding for bandwidth efficient reliability improvement for urllc service
AssigneeAT&T Intellectual Property I, L.P.
InventorsMilap Majmundar, Arunabha Ghosh
Life of this patent
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Abstract
A bandwidth efficient way to improve reliability without introducing additional latency is provided for Ultra-Reliable and Low Latency Communications (URLLC) service in 5G NR. In particular, using rateless fountain codes in conjunction with packet duplication for split bearers at the Packet Data Convergence Protocol (PDCP) layer increases the reliability of transmission without the need for retransmissions, and with a lower bandwidth requirement compared to traditional packet duplication
Claims21
A transceiver device, comprising:
- a processor;
- and
- a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
- receiving a packet at a protocol stack of a radio access network;
- in response to determining that the packet is associated with a predefined radio access bearer, encoding the packet with a rateless fountain code, resulting in a first group of encoded packets, wherein the encoding the packet with the rateless fountain code facilitates reconstructing the packet from a second group of encoded packets, and wherein a first number of bits associated with the second group of encoded packets is at least equal to a second number of bits associated with the packet;
- and
- transmitting the first group of encoded packets to a receiver device via a group of relay devices.
4 more elements
(canceled)
A method, comprising:
- determining, by a radio access network device comprising a processor, that a packet is associated with a radio access bearer satisfying a defined criterion relating to latency and reliability of the radio access bearer, wherein the radio access network device is part of a radio access network;
- encoding, by the radio access network device, the packet with a rateless fountain code resulting in a first group of encoded packets, wherein the encoding the packet with the rateless fountain code facilitates reconstructing the packet from a second group of encoded packets, and wherein a first number of bits associated with the second group of encoded packets is at least equal to a second number of bits associated with the packet;
- and
- transmitting, by the radio access network device, the first group of encoded packets to a user equipment device via a split bearer associated with a group of network paths of the radio access network.
1 more element
A receiver device, comprising:
- a processor;
- and
- a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:
- receiving first encoded packets associated with a split bearer, wherein the first encoded packets are received from respective relay devices;
- verifying an integrity of the first encoded packets;
- determining that the first encoded packets are associated with a radio access bearer satisfying a defined criterion relating to latency and reliability;
- and
- decoding the first encoded packets using a rateless fountain code, resulting in a decoded packet, and wherein the first encoded packets are encoded with the rateless fountain code that facilitates reconstructing the decoded packet from second encoded packets, and wherein a first number of bits associated with the second encoded packets is equal to or greater than a second number of bits associated with a packet associated with the radio access bearer.
5 more elements
Dependencies are inferred from the claim text.