IEEE 802.11p Vehicle to Infrastructure Communications in Urban Environments

[Miguel Sepulcre]

Dear colleagues,

I would like to present in this group the availability of V2I IEEE 802.11p traces in http://www.uwicore.umh.es/V2I-measurement-campaign/

These traces were obtained in an extensive field testing campaign (part of the iTETRIS European project) aimed at analyzing the impact of urban characteristics, RSU deployment conditions, and communication settings on the quality of IEEE 802.11p Vehicle to Infrastructure (V2I) communications. The reported results show that the streets’ layout, urban environment, traffic density, presence of heavy vehicles, trees, and terrain elevation, have an effect on V2I communications, and should be taken into account to adequately deploy and configure urban RSUs.

Three different types of traces are available:

• Traffic traces basically include positioning, time, and speed information of the OBU so that they can be used for tasks related to traffic modeling and validation. Detailed information about the GPS coverage and estimated errors are also included. The information is updated at 10Hz.
• Communications traces basically include positioning information of both transmitter and receiver for each correctly received packet. The traces include also the RSSI level of such packets. These results represent the basis to calculate the communications performance traces.
• Communications performance traces include the packet delivery ratio (PDR) experienced at different distances to the RSU, computed based on averaging multiple runs. The traces include also geographic information so that the PDR can be geo-positioned.

These traces could be exploited to increase the validity of your simulations, to validate large-scale propagation models, or any other interesting aspect you would like to test.

Please, do not hesitate to contact me should you need further information.

Sincerely,

Miguel Sepulcre

[Tom Henderson]

On 01/02/2013 07:38 AM, Miguel Sepulcre wrote:
> Dear colleagues,
>
> I would like to present in this group the availability of V2I IEEE
> 802.11p traces in http://www.uwicore.umh.es/V2I-measurement-campaign/
>
> These traces were obtained in an extensive field testing campaign (part
> of the iTETRIS European project) aimed at analyzing the impact of urban
> characteristics, RSU deployment conditions, and communication settings
> on the quality of IEEE 802.11p Vehicle to Infrastructure (V2I)

> communications. The reported results show that the streets� layout,

> urban environment, traffic density, presence of heavy vehicles, trees,
> and terrain elevation, have an effect on V2I communications, and should
> be taken into account to adequately deploy and configure urban RSUs.
>
> Three different types of traces are available:
>

> * /Traffic traces/ basically include positioning, time, and speed

> information of the OBU so that they can be used for tasks related to
> traffic modeling and validation. Detailed information about the GPS
> coverage and estimated errors are also included. The information is
> updated at 10Hz.

> * /Communications traces/ basically include positioning information of

> both transmitter and receiver for each correctly received packet.
> The traces include also the RSSI level of such packets. These
> results represent the basis to calculate the communications
> performance traces.

> * /Communications performance traces/ include the packet delivery

> ratio (PDR) experienced at different distances to the RSU, computed
> based on averaging multiple runs. The traces include also geographic
> information so that the PDR can be geo-positioned.
>
> These traces could be exploited to increase the validity of your
> simulations, to validate large-scale propagation models, or any other
> interesting aspect you would like to test.
>
> Please, do not hesitate to contact me should you need further information.

Miguel,
Thanks for posting this information. Is your project making available
any direct support for ns-3 users to use the trace results with ns-3
compatible propagation models and mobility models (i.e. by providing an
ns-3 class that consults these traces), or will users need to write
their own models based on the available traces?

- Tom

[Miguel Sepulcre]

Hi Tom,

The traces are provided in txt format (matrix format) so they can be easily read with C/Java/Matlab/Octave or any other tool. The .kml (Google Earth) files showing the communications performance achieved can also be downloaded. I am sorry, but we have not implemented any specific tool to read them and use them in ns-3 (or any other simulation tool). There are different traces and possibly different ways to do it depending on your objectives.

In any case, do not hesitate to contact me if you need further information about the traces or details about the measurement campaign.

Best regards,

Miguel Sepulcre