Resource Allocation for Uplink Grant-Free Ultra-Reliable and Low Latency Communications
| Autor: | Nitin Mangalvedhe, Amitava Ghosh, Rapeepat Ratasuk, Zhiyi Zhou |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
business.industry
Computer science Network packet 05 social sciences 050801 communication & media studies 020302 automobile design & engineering 02 engineering and technology Shared resource 0508 media and communications 0203 mechanical engineering Telecommunications link Cellular network Resource allocation Resource management business Resource utilization 5G Computer network |
| Zdroj: | VTC Spring |
| DOI: | 10.1109/vtcspring.2018.8417634 |
| Popis: | Ultra-Reliable and Low Latency Communications (URLLC) is an important emerging area for the fifth generation (5G) cellular network. The requirements for URLLC are as stringent as 1−10-5 reliability for a 32-byte packet with user plane latency of 1 ms. To achieve these requirements, grant-free transmission with repetitions of data packet has been recently proposed for uplink transmissions. However, the resource overhead and collisions among URLLC user equipments (UEs) become limiting factors to achieving optimal system performance. In this work, a hybrid resource allocation scheme is proposed to optimally allocate dedicated resource units and/or a shared resource pool to a group of UEs. Numerical results based on theoretical analysis show that the target requirements of URLLC can be achieved with up to 70% reduction in resource utilization compared to the conservative transmission scheme. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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