Efficient Protocol for Reliable Mobile Origination Connection In URLLC Devices

Abstract

The Fifth-Generation (5G) cellular mobile networks are expected to support three service categories and one of them is Ultra-reliable low latency communication (URRLC). For URLLC type of services, 3GPP has strict performance requirements of low latency and high reliability. According to ITU-R M.2410-0 and 3GPP Technical Specification (TS) 38.913, error rate should be lower than 1 packet loss in 105 packets and latencies should be lower than 0.5ms uplink/downlink for URLLC. To ensure such high reliability, packet retransmissions or packet duplication may be performed which will incorporate additional delays to the communication. Hence, there are multiple open research problems for achieving very low latency along with high reliability for URLLC. To the best of our knowledge, this paper for first time solved one of the research problems, by proposing a new call flow where 5G Radio Resource Control (RRC) Release message is to be enhanced such that accessing network for Mobile Originating (MO) call/data in ultra-reliable low latency devices will achieve a reliability with lower than error rate of 1 packet loss in 105 packets along with shorter latency than existing art. Through extensive experiments and simulation, the proposed idea, reduced error rate below than 0.0001% with improved latency as success rate increased to 99.99% during initial access than existing method.