Contention window adaptation of listen-before-talk scheme for LTE and Wi-Fi coexistence in unlicensed spectrum
| Autor: | Fujing Xie, Hengheng Hu, Min Zheng, Chong Tan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Scheme (programming language)
Markov chain Computer science business.industry ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS 05 social sciences Window (computing) Markov process 050801 communication & media studies 020206 networking & telecommunications Throughput 02 engineering and technology Collision Spectrum management symbols.namesake 0508 media and communications Hardware_GENERAL 0202 electrical engineering electronic engineering information engineering symbols business computer Communication channel Computer network computer.programming_language |
| Zdroj: | 2017 7th IEEE International Conference on Electronics Information and Emergency Communication (ICEIEC). |
| DOI: | 10.1109/iceiec.2017.8076512 |
| Popis: | Harmonious coexistence between LTE with Licensed-Assisted Access (LTE-LAA) and WIFI is a research issue due to deploying LTE to unlicensed spectrum 5GHz. Listen-before-talk (LBT) scheme works as a requisite in unlicensed spectrum to ensure the fairness among different radio access technologies (RATs). To reduce the collision caused by relatively fixed contention window (CW) of LBT scheme and ensure the fairness between LTE and WIFI, in this paper, we propose an enhanced LBT scheme which adjusts CW based on LTE small cell medium sensing the state of channel. Besides, the enhanced LBT scheme is modeled as one-dimensional Markov chain to analyze the behavior of LTE small cell and calculate the expected throughput. Simulation results indicate that the proposed LBT scheme can let WIFI and LTE gain nearly equal throughput and reduce the collision probability in LTE-WIFI coexistence scenario, besides, the total throughput also promotes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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