March 20, 2017

LWIP and Wi-Fi Boost Link Management

  • K S.
  • Kim B.
  • Ling J.
  • Lopez-Perez D.
  • Ming Ding
  • Vasudevan S.

3GPP LWIP Release 13 technology and its prestandard version Wi-Fi Boost have recently emerged as an efficient LTE and Wi-Fi integration at the IP layer, allowing uplink on LTE and downlink on Wi-Fi. This solves all the contention problems of Wi-Fi and allows an optimum usage of the unlicensed band for downlink. In this paper, we present a new feature of Wi-Fi Boost, its radio link management, which allows to steer the downlink traffic between both LTE and Wi-Fi upon congestion detection in an intelligent manner. This customised congestion detection algorithm is based on IP probing, and can work with any Wi-Fi access point. Simulation results in a typical enterprise scenario show that LWIP R13 and Wi-Fi Boost can enhance network performance up to 5x and 6x over LTE-only, and 4x and 5x over Wi-Fi only networks, respectively, and that the the proposed radio link management can further improve Wi-Fi Boost performance over LWIP R13 up to 19 %. Based on the promising results, this paper suggests to enhance LWIP R13 user feedback in future LTE releases.

Recent Publications

April 12, 2017

From Scaling Disparities to Integrated Parallelism: A Decathlon for a Decade

  • Neilson D.
  • Winzer P.

Based on a variety of long-term network traffic data across different geographies and applications as well as long-term scaling trends of key information and communication technologies, we identify fundamental scaling disparities between technologies used to generate and process data and technologies used to transport data. These disparities could lead to ...

April 12, 2017

An 8 x 10-Gb/s, 42-km High-Split TWDM PON Featuring Distributed Raman Amplification and a Remotely Powered Intelligent Splitter

  • Earnshaw M.
  • Gnauck A.
  • Hehmann J.
  • Iannone P.
  • Jentsch L.
  • Pfeiffer T.
  • Straub M.

We demonstrate an intelligent symmetric-rate, 8 x 10- Gb/s, bi-directional time and wavelength-division multiplexed passive optical network (TWDM-PON) with 42-km reach, and 1:256 split. 1425-nm laser pump light provides distributed Raman amplification for the upstream channels (allowing lowcost low-power transmitters), serves as a low-rate telemetry channel, and powers an intelligent ...

March 27, 2017

Dielectric powder loaded coaxial-cavity filters

  • Bulja S.
  • Doumanis E.
  • Pivit F.

In this paper we demonstrate the use of low-loss powders in the design and fabrication of RF filters. Initially, several different powders are tested for their RF performance - in particular their relative dielectric permittivity and loss tangent. Then, based on the information obtained in this way, the best performance ...