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- W4300523189 abstract "5G wireless networks are expected to support Ultra Reliable Low Latency Communications (URLLC) traffic which requires very low packet delays ( < 1 msec.) and extremely high reliability ($sim$99.999%). In this paper we focus on the design of a wireless system supporting downlink URLLC traffic. Using a queuing network based model for the wireless system we characterize the effect of various design choices on the maximum URLLC load it can support, including: 1) system parameters such as the bandwidth, link SINR , and QoS requirements; 2) resource allocation schemes in Orthogonal Frequency Division Multiple Access (OFDMA) based systems; and 3) Hybrid Automatic Repeat Request (HARQ) schemes. Key contributions of this paper which are of practical interest are: 1) study of how the the minimum required system bandwidth to support a given URLLC load scales with associated QoS constraints; 2) characterization of optimal OFDMA resource allocation schemes which maximize the admissible URLLC load; and 3) optimization of a repetition code based HARQ scheme which approximates Chase HARQ combining." @default.
- W4300523189 created "2022-10-03" @default.
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- W4300523189 date "2018-04-24" @default.
- W4300523189 modified "2023-10-15" @default.
- W4300523189 title "Resource Allocation and HARQ Optimization for URLLC Traffic in 5G Wireless Networks" @default.
- W4300523189 doi "https://doi.org/10.48550/arxiv.1804.09201" @default.
- W4300523189 hasPublicationYear "2018" @default.
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