International Workshop on the Implementation of a Device Description Repository

A workshop of the Mobile Web Initiative Device Description Working Group

12/13 July 2006
Madrid, Spain

This is the original call for participation. The workshop has taken place and the report is now available.

Nearby: MWI | DDWG | Workshop Report

Latest News

Workshop Announcement
24 July 2006 - Workshop Report is published
11 July 2006 - Liaison statement from OMA to the DDR Workshop (Zip file)
1 July 2006 - All statements of interest, invitations and registrations are now closed.
18 May 2006 - The Workshop press release.
28 April 2006 - The DDWG announces the DDR Workshop to be hosted by Telefónica Investigación y Desarrollo, Madrid, 12-13 July 2006.


Announcement (Call for Participation)

A workshop is being held in Madrid, Spain (12 and 13 July 2006) to discuss the design, implementation and intended use of a Device Description Repository (DDR) being proposed by the DDWG. The proposed DDR will provide device information to content/service providers, primarily for the purpose of adapting content to suit client devices.

The DDWG has recently published a draft of the DDR Requirements that outline the technical requirements of the DDR.

People and organizations who have a specific interest in the work of the DDWG and who wish to participate in the workshop are invited to send statements of interest to the Workshop Committee. The email address for such statements is

The workshop is being hosted by Telefónica Investigación y Desarrollo (T I+D ).


With ever-increasing diversity of Web-enabled devices it is expected that content adaptation will play a significant role in the delivery of content. Mobile Web-enabled devices exhibit the greatest diversity, and therefore present the greatest challenge.

The successful adaptation of content to the capabilities of a device depends on reliable knowledge about the target device. For example, the selection of columns of a table may depend on the physical width of the screen. If the knowledge is absent, adaptation prior to delivery cannot take place.

In this landscape of device diversity there are some sources of device descriptions for a subset of devices, and a number of actors in the device description ecosystem who are motivated to actively participate. The DDWG has outlined these in its Landscape and Ecosystem documents.

There is no standard source of device descriptions, and no standard technology for providing access to such descriptions if they were available. In recognition of this, the DDWG has produced a set of Requirements for a Device Description Repository (DDR).

This workshop, which will bring the first charter of the DDWG to a conclusion, will examine the DDR Requirements and identify the most appropriate design and implementation strategies.


The goal of the workshop is to explore the DDR design and implementation issues, including the following:

All of these issues will be considered for inclusion in the proposed charter of a new group to follow the DDWG, whose task will be to make the DDR a reality.

Workshop Dates

The workshop will take place on Wednesday and Thursday, 12-13 July 2006.


The workshop is located in Madrid, Spain, at the T I+D headquarters: C/ Emilio Vargas 6, 28043 Madrid.

Telefónica I+D is located in the North-East of Madrid, very close to the international airport of Barajas (approximately 10 km. far) in the crossing of Avenida de América (roadway to Barcelona) with the street Arturo Soria, in a modern an easily accessible area, where many other commercial and business offices are as well situated.

Map of T I+D Madrid


To ensure productive discussions, the workshop is limited to 35 attendees. Participation is open to non-W3C members. Each organization can provide at most two attendees.

Position papers are required in order to participate in this workshop (except for W3C team members). Each organization or individual wishing to participate must submit a position paper explaining their interest in the workshop no later than 31 May 2006. The intent is to make sure that participants have an active interest in the area, and that the workshop will benefit from their presence.

Send papers (in valid XHTML/HTML (please use the W3C Markup Validation Service) or PDF - 1 to 5 pages) to:

All position papers will be available from the workshop Web site. The workshop Web site will be public, so position papers and slides must be suitable for public dissemination. Speaker slides will also be available at the Web site after the workshop. There will not be printed proceedings.

To attend, you must register by filling out the registration form. The URI for the registration form will be sent to you after your position paper is accepted.

There will be no participation fee.

Note: To help the organizers plan the workshop: If you wish to participate, please send email as soon as possible to stating:

Note that this expression of interest does not mean that you registered for the workshop. It is still necessary to send a position paper, which has to be accepted by the Program Committee.

UPDATE: The deadline for the receipt of position papers has passed. The Program Committee has reviewed all papers and formal invitations to participate have been sent.


Please refer to the detailed agenda page.

Important Deadlines

Please note the following dates:


Please view the summary of recommended accommodation.


Please view the summary of recommended transport options.

Mailing List

Enquiries or comments on the workshop can be sent to the public mailing list for Device Description Working Group at The archive of the mailing list is visible to the public.

Private enquiries can be directed to the Workshop Chair.

Program Committee

The program committee can be contacted by email at:

The Program Committee was appointed by the MWI Steering Council and comprises the group Chair, W3C Team Contact and the following appointees:

Workshop Chair
Rotan Hanrahan, MobileAware, MWI Device Description Working Group Chair

Previous W3C Workshops

The following workshops have been held in which the subject of device descriptions has been raised: