Helka-Liina Määttanen

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ieee conference on standards for communications and networking | 2017

LTE-WLAN aggregation (LWA) in 3GPP Release 13 & Release 14

Helka-Liina Määttanen; Gino Luca Masini; Mattias Bergström; Antti Ratilainen; Torsten Dudda

Integrating different radio access technologies (RATs) is one effective method to meet the demand to provide ever increasing data rates to the users. For integrating LTE and WLAN in particular, the purpose is to enhance the operators control of when the UE uses WLAN. Another aim, in addition to better network control on which RAT is used, is the possible data aggregation which enables simultaneous utilization of both resources. In this paper, we present LTE-WLAN Aggregation (LWA) as specified in 3GPP and compare it to the LTE-WLAN Radio Level Integration with IPsec tunnel (LWIP), also specified in 3GPP. In addition, we provide simulation results comparing the schemes in an example scenario.

IEEE Communications Magazine | 2018

The Sky Is Not the Limit: LTE for Unmanned Aerial Vehicles

Xingqin Lin; Vijaya Yajnanarayana; Siva D. Muruganathan; Shiwei Gao; Henrik Asplund; Helka-Liina Määttanen; Mattias Bergström; Sebastian Euler; Y.-P. Eric Wang

Archive | 2017

Short PUCCH in Uplink sPUCCH

Helka-Liina Määttanen; Mattias Andersson; Stefan Parkvall; Per Synnergren; Stefan Wager; Hanzhi Zhang

Archive | 2016

Defining sub-subchannels for data communication using separately provided frequency and time resources and related wireless terminals and network nodes

David Astely; Stefan Parkvall; Helka-Liina Määttanen; Niklas Andgart; Mattias Andersson

Archive | 2015

Reducing reference signals when communicating multiple sub-subframes between a base station and a wireless terminal

Mattias Andersson; Niklas Andgart; Helka-Liina Määttanen

arXiv: Networking and Internet Architecture | 2018

Mobile Networks Connected Drones: Field Trials, Simulations, and Design Insights.

Xingqin Lin; Richard Wiren; Sebastian Euler; Arvi Sadam; Helka-Liina Määttanen; Siva D. Muruganathan; Shiwei Gao; Y.-P. Eric Wang; Juhani Kauppi; Zhenhua Zou; Vijaya Yajnanarayana

arXiv: Networking and Internet Architecture | 2018