User-assisted bearer split control for dual connectivity in multi-RAT 5G networks
| Autor: | Emanuel B. Rodrigues, Roberto P. Antonioli, Carlos Fernandes da Silva, Tarcisio F. Maciel, Igor M. Guerreiro, Francisco R. P. Cavalcanti, Diego Aguiar Sousa |
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| Rok vydání: | 2020 |
| Předmět: |
Multi rat
Computer Networks and Communications Computer science business.industry 020206 networking & telecommunications 020302 automobile design & engineering Throughput 02 engineering and technology Backhaul (telecommunications) 0203 mechanical engineering Handover 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business 5G Information Systems Computer network |
| Zdroj: | Wireless Networks. 26:3675-3685 |
| ISSN: | 1572-8196 1022-0038 |
| DOI: | 10.1007/s11276-020-02283-6 |
| Popis: | One of the most important functionalities for the dual connectivity (DC) technology in non-stand-alone (NSA) fifth generation (5G) networks is the flow control algorithm (FCA), which has the role of correctly splitting the data traffic of users in DC. However, delays in backhaul links and the time between two executions of the FCA may limit the effectiveness of the split ratios computed by the FCA in situations where unexpected channel variations or an increase in the traffic load happen. In this context, we propose a heuristic mechanism where the user assists the FCA in performing a faster and finer adjustment of the bearer split ratios. The proposed mechanism works based on a single scalar value and can be combined with any existing FCA. Besides the adjustment of the bearer split ratios, the proposed mechanism may also trigger handover/disconnection when it detects problems in one of the user connections, which is a novel feature that is not present in existing solutions. Simulations demonstrate the gains provided by the proposed mechanism in terms of user satisfaction, total system rate and user throughput. |
| Databáze: | OpenAIRE |
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