Workshop on LTE in Unlicensed Bands: Potentials and Challenges
Friday, 12 June 2015 • 09:00 – 18:00
WS-18: LTE in Unlicensed Bands: Potentials and Challenges
Organizers: Andrea Goldsmith (Stanford University, USA); Alireza Babaei and Jennifer Andreoli-Fang (CableLabs); Klaus Doppler (Nokia Research)
The exponential growth of mobile data traffic and the scarcity and costliness of licensed spectrum are driving mobile network operators to consider offloading at least part of their traffic onto the unlicensed spectrum. Most recently, the 3GPP is considering extending the use of LTE into the unlicensed spectrum as a seamless approach to enable traffic offload. This new approach is dubbed LTE Unlicensed (LTE-U). Compared to Wi-Fi, LTE-U offers MNOs a way to offload traffic onto the unlicensed spectrum with a technology that seamlessly integrates into their existing LTE evolved packet core (EPC). Furthermore, LTE-U promises higher throughout and spectral efficiency than Wi-Fi. However, LTE-U introduces new coexistence challenges for other technologies in the same unlicensed bands particularly for legacy Wi-Fi. The goal of this workshop is to bring together academics, researchers, and practitioners to discuss the opportunities, challenges and potential solutions for operation of LTE in the unlicensed bands.
Time | ICC London Suite 1 |
Friday, June 12 |
|
09:00-09:05 | WS-18: Welcome Session |
09:05-10:30 | WS-18-01: Keynote Talks |
11:00-12:30 | WS-18-02: Coexistence |
14:30-16:00 | WS-18-03: Fairness |
16:30-18:00 | WS-18-04: System Architecture |
Friday, June 12
09:00 - 09:05
WS-18: Welcome Session
09:05 - 10:30
WS-18-01: Keynote Talks
Keynote 1- Spectrum Sharing: Games and Optimization Abstract: The wireless industry has been debating how to take advantage of hundreds of megahertz of unlicensed spectrum. Some promote WiFi based technologies; others have proposed to retool and deploy Long Term Evolution (LTE) technologies in unlicensed frequency bands. This talk starts with a brief overview of the regulatory framework for radio spectrum policy. Game theoretic models are then introduced to study the fundamental problem of spectrum sharing by strategic operators. Also discussed is a new optimization based framework for an operator to manage all available licensed and unlicensed spectrum in many cells to achieve the best quality of service. Keynote 2- Open Innovation in Unlicensed Spectrum: Implications of LTE-Unlicensed (LAA-LTE) Abstract: The purpose of the presentation is to illustrate some potential impact of LTE-U (or LAA-LTE) on WiFi performance and make the case for strong co-existence requirements. We will start with providing a high level background on LTE-U/LAA-LTE, explain the possible impacts on LTE-U/LAA-LTE on WiFi performance then explain the co-existence goals. We will also discuss LWA (LTE WLAN Aggregation) as a potential alternative allowing operators to leverage the unlicensed spectrum while providing for better co-existence with WiFi. We will conclude with a summary of the main takeaways and asks.
11:00 - 12:30
WS-18-02: Coexistence
- Coexistence of WiFi and LTE in Unlicensed Bands: A Proportional Fair Allocation Scheme
- pp. 10350-10355
- Coexistence of Pico- and Femto-Cellular LTE-Unlicensed with Legacy Indoor Wi-Fi Deployments
- pp. 10356-10362
- Modeling the Coexistence of LTE and WiFi Heterogeneous Networks in Dense Deployment Scenarios
- pp. 10363-10368
- Learning-based Coexistence for LTE Operation in Unlicensed Bands
- pp. 10369-10375
14:30 - 16:00
WS-18-03: Fairness
- How Loud to Talk and How Hard to Listen-Before-Talk in Unlicensed LTE
- pp. 10376-10381
- LTE with Listen-Before-Talk in Unlicensed Spectrum
- pp. 10382-10386
- Coexistence of Wi-Fi and LAA-LTE: Experimental Evaluation, Analysis and Insights
- pp. 10387-10393
- A Channel Sensing Based Design for LTE in Unlicensed Bands
- pp. 10394-10399