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21.4.2018 : 23:03

IETF PAWS WG (Protocol for Accessing White Spaces)

Scope and objectives

The charter for this WG was established 14 June 2011. Generally, the IETF strives to utilise established protocols rather than develop new ones. The objecives of this WG are:

  • Standardise a mechanism for discovering a white space database
  • Standardise a mechanism for accessing a white space database
  • Standardise query and response formats to be carried over the database access method
  • Ensure that the discovery mechanism, database access method and query response formats have appropriate security levels in place.

Two documents are in processing:

  • RFC 6953: Use Cases and Requirements as at March 2013
  • Draft protocol, Rev 5 as at June 2013.


Technical relevance to QoSMOS

There are two PAWS documents that have received contributions from QoSMOS. Both of these documents are later than originally planned by the IETF but there has been some progress during the final year of the project. Firstly RFC 6953, titled Use Cases and Requirements and dated March 2013, includes the use-cases from QoSMOS and also the requirement for a feedback loop from the TVWS device to the database that will facilitate QoS and mobility support. Secondly the draft protocol specification, which is timed for publication late 2013, includes hooks for value-added services from a database such as fairness which will not be part of the standard.

The use-cases are as follows: 

  • TVWS database discovery
  • Device registration with trusted Database
  • Hotspot: urban internet connectivity service (small cells)
  • Wide-Area or Rural internet broadband access
  • Offloading: moving traffic to a white space network
  • TVWS for backhaul
  • Rapid deployed network for emergency scenario Mobility*
  • Indoor Networking*
  • Machine to Machine (M2M)*

The last three use-cases (marked *) were contributed by BT on behalf of QoSMOS.