LTE-Wi-Fi Interworking
Demand from data hungry applications in smartphones/tablets brings a significant traffic load onto mobile networks. Wi-Fi in unlicensed spectrum provides a lot of bandwidth. Hence 3GPP has started work on integrating LTE and Wi-Fi to offer high data rates for indoor users. Initially this integration is realised by bringing in Wi-fi network into cellular packet core (EPC) through Packet-Gateway. For more fine control over these LTE and Wi-Fi interfaces, a closer level of interworking is required. Hence a new LTE-Wi-Fi aggregation (LWA) is brought in with tight integration at access link level by 3GPP. We proposed an IP level LWA architecture which introduces no change at the protocol stack of User equipments (UEs) and offers higher system capacity. We have realized this architecture on LENA NS-3 and a testbed by using Eurecom's OpenAirInterface (OAI) LTE, off-the-shelf Wi-Fi APs and commercial smartphones (e.g., iPhone and Nexus 5/6). NeWS lab @ IITH is conducting research work to design and develop various interworking architectures and traffic steering algorithms for both co-located and non co-located LWA scenarios.
Coverage based on Press release: Slow downloads, dropped calls? Integration of mobile networks with Wi-Fi may be the answer
Research Scholars : Thomas V Pasca (Ph.D), Himank Gupta (M.Tech), Tarun Patidar (M.Tech)
[J1] Thomas Valerrian Pasca S, Sumanta Patro, Bheemarjuna Reddy Tamma, and Antony Franklin, "Network Coordination Function for Uplink Traffic Steering in Tightly Coupled LTE Wi-Fi Networks", Elsevier Computer Networks, vol. 127, pp. 296--316, 2017. [ Accepted Version ] [ DOI Link ]
[C1] Thomas Valerrian Pasca S, Nabhasmita Sen, Venkatarami Reddy, Bheemarjuna Reddy Tamma, and Antony Franklin, " A Framework for Integrating MPTCP over LWA - A Testbed Evaluation", in Proceedings of WiNTECH ACM MobiCom Workshop, 2018, New Delhi, India.[ Accepted Version ][DOI Link][Presentation]
[C2] Sumanta Patro, Thomas Valerrian Pasca S, Bheemarjuna Reddy Tamma, and Antony Franklin, " INCARNATE: An Interference Aware Spatial Scheme for Tightly Coupled LTE-Wi-Fi Networks ", in Proceedings of COMSNETS, 2018, Bangalore, India.[ Accepted Version ][DOI Link][Presentation]
[C3] Thomas Valerrian Pasca S, Sumanta Patro, Bheemarjuna Reddy Tamma, and Antony Franklin, " A Real-Time Performance Evaluation of Tightly Coupled LTE Wi-Fi Radio Access Networks ", in Proceedings of IEEE ANTS ,2017, Bhubaneshwar, India.[ Accepted Version ][DOI Link][Presentation]
[C4] Thomas Valerrian Pasca S, Adharsh Srivats Rangarajan, Bheemarjuna Reddy Tamma, and Antony Franklin, " Optimal Placement of Colocated and Non-Colocated LWA Nodes in Dense Deployments ", in Proceedings of IEEE ANTS ,2017, Bhubaneshwar, India.[ Accepted Version ][DOI Link][Presentation]
[C5] Thomas Valerrian Pasca S, Bheemarjuna Reddy Tamma, and Antony Franklin, " VISIBLE: Virtual Congestion Control with Boost ACKs for Packet Level Steering in LWIP Networks ", in Proceedings of IEEE GLOBECOM ,2017, Singapore.[ Accepted Version ][DOI Link][Presentation]
[C6] Thomas Valerrian Pasca S, Himank Gupta, Bheemarjuna Reddy Tamma, and Antony Franklin, " PRECISE: Power Aware Dynamic Traffic Steering in Tightly Coupled LTE Wi-Fi Networks ", in Proceedings of IEEE PIMRC ,2017, Montreal, Canada.[ Accepted Version ][DOI Link][Presentation]
[C7] Thomas Valerrian Pasca S, Amogh PC, Debashisha Mishra, Nagamani Dheeravath, Anil kumar Rangisetti, Bheemarjuna Reddy Tamma, and Antony Franklin, "Architectural Challenges and Solutions for Collocated LWIP - A Network Layer Perspective ", in Proceedings of NCC ,2017, Chennai, India.[ Accepted Version ][DOI Link][Presentation]
[C8] Prasanth Sharma, Ajay Brahmakshatriya, Thomas Valerrian Pasca S, Bheemarjuna Reddy Tamma, and Antony Franklin, " LWIR: LTE-WLAN Integration at RLC Layer with Virtual WLAN Scheduler for Efficient Aggregation ", in Proceedings of IEEE GLOBECOM ,2016, Washington DC, USA.[ Accepted Version ][DOI Link][Presentation]
[C9] Prasanth Sharma, Thomas Valerrian Pasca S, Naveen Kamath, Bheemarjuna Reddy Tamma, and Antony Franklin, " Velocity Based Dynamic Flow Mobility in Converged LTE/Wi-Fi Networks ", in Proceedings of NCC ,2016, Guwahati, India.[ Accepted Version ][DOI Link][Presentation]
[B1] Sumanta Patro, Thomas Valerrian Pasca S, Bheemarjuna Reddy Tamma, and Antony Franklin, "mINCARNATE: An Interference and Mobility Aware Spatial Scheme for Tightly Coupled LTE-Wi-Fi Networks", Lecture Notes in Computer Science (LNCS), 11227, Chapter 6, pp. 126–149, 2019. [ Accepted Version ] [ DOI Link ]
[P1] Thomas Valerrian Pasca S, Bheemarjuna Reddy Tamma, and Antony Franklin, "Traffic steering in aggregated LTE-Wi-Fi Networks", Filing Date: 31-Aug-2016, Application Number: 4705/CHE/2015, Status: Patent Pending, India.
[P2] Antony Franklin, Bheemarjuna Reddy Tamma, Prashant Sharma, and Thomas Valerrian Pasca S, "Method for Scheduling Data by Network Node Aggregated With LTE and Wi-Fi Protocol Stacks", Filing Date: 27-Aug-2017, Application Number: US 20180035445 A1, Status: Patent Pending, United States.
[P3] Antony Franklin, Bheemarjuna Reddy Tamma, Prashant Sharma, and Thomas Valerrian Pasca S, "Method and System for LTE WLAN Integration at RLC Layer (LWIR) with Integrated LTE Wi-Fi Scheduler", Filing Date: 27-Jul-2016, Application Number: 201641025740, Status: Patent Pending, India.
Equipments:
Ex-MIMO 2 Boards
USRP B 210's
RASPBERRY Pis
ODROID Wi-Fi Dongles
CISCO managed switch ( 24X1 Gig - switch )
Rack Server