WP2 - Energy-efficiency in access and home networks

WP2 Leader: Prof. Leandros Tassiulas (UTH)

WP2 coordinates integrated and dissemination efforts related to the technical domains of energy-efficiency in the network periphery.

The access network provides the connectivity between network users and the core of the network and therefore it is an essential part of the whole system. What is more important, due to the sheer volume of such connections, any energy saving or waste is multiplied by a huge number, which in turn means that acting smartly on this part of network can provide an edge towards making information technology “greener”. The technical focus of WP2 is on saving energy in the access segment, whether this involves home equipment, mobile devices or managing access from the network view.

In particular, WP2 technically deals with home equipment enhancement, energy consumption at the subscriber loop, management of network access, wireless devices, access points and base stations and the goal is to demonstrate new ideas that can provide energy savings that will reduce significantly the running costs of the whole network. Partners will jointly perform research and disseminate results on these topics, but also contribute to other integration activities, such as teaching efforts, events organization, and coordination with other initiatives.

The following specific technical objectives of WP2 will be pursued through integrated efforts and reinforced by IRAs:

  • Identifying solutions for energy reduction based on results of WP1, e.g. variable speed modes for interfaces and devices; network elements functionality allocation and the related architectures and necessary protocols.
  • Enhance the current home equipment by adding energy saving features that can be directly adopted in the market.
  • Develop algorithms and protocols for efficiently turning on and off network devices (or parts of them) such as routers, set-top-boxes, access points, base stations, mobile handhelds and computers.
  • Preserve user experience of being always connected, by applying profiling techniques, traffic shaping and forecasting, load balancing with appropriate routing etc.
  • Propose a number of novel green counterparts of traditional access techniques; green handovers, energy efficient cognitive radios, smart proxies, green p2p, energy-based contention.
  • Optimize the energy performance of multihop wireless access networks by means of global optimization techniques and energy efficient routing protocols and power control algorithms.
  • More formally, the following Technical Domains were identified for WP2.
  • TD 2.1 Redesign the home equipment for energy efficient communications
  • TD 2.2 Network access architecture and management: optimizing power usage one step away from the end user
  • TD 2.3 Organize the flying bits: saving energy on wireless access
  • TD 2.4 Green protocols for handling wireless access from the network view
  • TD 2.5 Wireless multihop access

To increase cooperation and improve organization, two crucial topics will utilize the tool of IRAs.

  • IRA 2.1 (related to TD 2.1 and TD 2.3): Low energy solutions directly applicable to Customer Premises Equipment
  • IRA 2.2 (related to TD 2.4): On/off strategies for energy saving and transparent connectivity in WLAN access points and cellular femtocells

WP2 is organized in the following 4 tasks.

  • Task 2.1 [M03-M21]: IRA “Low energy solutions directly applicable to Customer Premises Equipment”
  • Task 2.2 [M15-M33]: IRA “On/off strategies for energy saving and transparent connectivity in WLAN access points and cellular femtocells”
  • Task 2.3 [M01-M36]: Research activities within Technical Domains 2.1, 2.2, 2.3, 2.4 and 2.5
  • Task 2.4 [M06-M36]: WP2 spreading of excellence activities, including providing expertise on WP2 Technical Domains to other WPs and to the technical community at the large