5G Access Slices with Native TCP

  • Francini A.
  • Joseph Beshay
  • Kucera S.
  • Ravi Prakash
  • Sharma S.

The 5G system integrates a variety of disruptive innovations in wireless access: new air interfaces, split link architectures that separate base-band processing and radio heads, virtualization of functions in general-purpose processors, and flexible chaining of virtualized functions in network slices tailored to the specific needs of diverse services. Besides new use cases and market verticals, 5G should open the mobile broadband network to throughput-intensive interactive (TII) applications, which present the most challenging combination of requirements on throughput (very high) and queuing delay (very low). TII applications rely on TCP for end-to-end transport, but TCP congestion control is not ready to meet their requirements in 5G. It suffers already from the bandwidth variations of LTE and Wi-Fi links, which 5G links will likely exacerbate. Many years of research on TCP optimization have produced consensus on the benefits of bringing the data source in close proximity of the wireless link, but not a conclusive solution for flawless performance. Leveraging the flexibility of the mobile edge cloud we rethink congestion control over the wireless link and conceive a native TCP for 5G where flow control alone is sufficient to lock the transmission rate of the data source to the available bandwidth. Network slicing makes our solution scalable: the native TCP function only needs to be chained in premium access slices for TII applications.

Recent Publications

August 09, 2017

A Cloud Native Approach to 5G Network Slicing

  • Francini A.
  • Miller R.
  • Sharma S.

5G networks will have to support a set of very diverse and often extreme requirements. Network slicing offers an effective way to unlock the full potential of 5G networks and meet those requirements on a shared network infrastructure. This paper presents a cloud native approach to network slicing. The cloud ...

August 01, 2017

Modeling and simulation of RSOA with a dual-electrode configuration

  • De Valicourt G.
  • Liu Z.
  • Violas M.
  • Wang H.
  • Wu Q.

Based on the physical model of a bulk reflective semiconductor optical amplifier (RSOA) used as a modulator in radio over fiber (RoF) links, the distributions of carrier density, signal photon density, and amplified spontaneous emission photon density are demonstrated. One of limits in the use of RSOA is the lower ...

July 12, 2017

PrivApprox: Privacy-Preserving Stream Analytics

  • Chen R.
  • Christof Fetzer
  • Le D.
  • Martin Beck
  • Pramod Bhatotia
  • Thorsten Strufe

How to preserve users' privacy while supporting high-utility analytics for low-latency stream processing? To answer this question: we describe the design, implementation and evaluation of PRIVAPPROX, a data analytics system for privacy-preserving stream processing. PRIVAPPROX provides three properties: (i) Privacy: zero-knowledge privacy (ezk) guarantees for users, a privacy bound tighter ...