Modeling and Analyzing the Coexistence of Wi-Fi and LTE in Unlicensed Spectrum
arXiv:1510.01392 · doi:10.1109/TWC.2016.2582866
Abstract
We leverage stochastic geometry to characterize key performance metrics for neighboring Wi-Fi and LTE networks in unlicensed spectrum. Our analysis focuses on a single unlicensed frequency band, where the locations for the Wi-Fi access points (APs) and LTE eNodeBs (eNBs) are modeled as two independent homogeneous Poisson point processes. Three LTE coexistence mechanisms are investigated: (1) LTE with continuous transmission and no protocol modifications; (2) LTE with discontinuous transmission; and (3) LTE with listen-before-talk (LBT) and random back-off (BO). For each scenario, we have derived the medium access probability (MAP), the signal-to-interference-plus-noise ratio (SINR) coverage probability, the density of successful transmissions (DST), and the rate coverage probability for both Wi-Fi and LTE. Compared to the baseline scenario where one Wi-Fi network coexists with an additional Wi-Fi network, our results show that Wi-Fi performance is severely degraded when LTE transmits continuously. However, LTE is able to improve the DST and rate coverage probability of Wi-Fi while maintaining acceptable data rate performance when it adopts one or more of the following coexistence features: a shorter transmission duty cycle, lower channel access priority, or more sensitive clear channel assessment (CCA) thresholds.
arXiv commentSubmitted to IEEE Transactions on Wireless Communications
References in corpus (7)
- A Tractable Approach to Coverage and Rate in Cellular Networks
- Femtocell Networks: A Survey
- Modeling and Analysis of K-Tier Downlink Heterogeneous Cellular Networks
- Downlink MIMO HetNets: Modeling, Ordering Results and Performance Analysis
- Load-Aware Modeling and Analysis of Heterogeneous Cellular Networks
- Modeling, Analysis and Design for Carrier Aggregation in Heterogeneous Cellular Networks
- Coordinated Dynamic Spectrum Management of LTE-U and Wi-Fi Networks
Cited by in corpus (13)
- Wi-Fi Meets ML: A Survey on Improving IEEE 802.11 Performance with Machine Learning
- Echo State Networks for Self-Organizing Resource Allocation in LTE-U with Uplink-Downlink Decoupling
- Survey of Spectrum Sharing for Inter-Technology Coexistence
- Underlay Radar-Massive MIMO Spectrum Sharing: Modeling Fundamentals and Performance Analysis
- Spectrum Sharing Among Multiple-Seller and Multiple-Buyer Operators of A Mobile Network: A Stochastic Geometry Approach
- Limitations of Stochastic Geometry Modelling for Estimating the Performance of CSMA Networks
- Traffic Management for Heterogeneous Networks with Opportunistic Unlicensed Spectrum Sharing
- Modeling and Performance Analysis of Spatially Distributed LTE-U and Wi-Fi Networks
- Throughput Optimal Listen-Before-Talk for Cellular in Unlicensed Spectrum
- Evolution of Small Cell from 4G to 6G: Past, Present, and Future
- Joint AP Association and PCS Threshold Selection in Dense Full-duplex Wireless Networks
- Unified Analysis of HetNets using Poisson Cluster Process under Max-Power Association
- Throughput Analysis and Energy Efficiency Optimization for Standalone LTE-U Networks with Randomly Delayed CSI