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• Question about Signal Gateway

• 
  Alexandru Nastas

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  Question about Signal Gateway

  Hi,
  
  I have a question about signal gateway functionality (which is located within the Autosar COM layer). What does it really do ?
  
  First I thought that it is similar to the Gateway functionality within the PDU Router. That it forwards signals received from one software component (SwC) directly to another software component, in the case if they are located in the same ECU. (In this case it is useless to pass the I-PDU to the lower layers for transmission).
  But now, after I read a little more docs I'm not sure about it :) Could someone explain ? Thanx
  
  P.S.: I'm sorry for the stupid question, I'm a beginner in Autosar :)
  
  • 10 Feb 2010, 4:44 pm
  Alexandru Nastas wrote: > Hi, > > I have a question about signal gateway functionality (which is > located within the Autosar COM layer). What does it really do ? > > First I thought that it is similar to the Gateway functionality > within the PDU Router. That it forwards signals received from one > software component (SwC) directly to another software component, in > the case if they are located in the same ECU. (In this case it is > useless to pass the I-PDU to the lower layers for transmission). > But now, after I read a little more docs I'm not sure about it :) > Could someone explain ? Thanx > > P.S.: I'm sorry for the stupid question, I'm a beginner in Autosar :)
• 
  Oliver Meili

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  Re: Question about Signal Gateway

  Hello Alexandru,
  
  there is one important difference between the routing in the PduR and in AUTOSAR COM. The PduR, as the name indicates, is responsible for forwarding PDUs, corresponding to e.g. CAN frames or TP messages, from one network to another. Contrary the signal gateway in COM is responsible for forwarding signals from one network to another.
  
  A look at the SystemTemplate and the structure of PDUs and signal might help to explain the difference.
  
  Best regards
  
  Oliver
  
  • 11 Feb 2010, 08:38 am
  Oliver Meili wrote: > Hello Alexandru, > > there is one important difference between the routing in the PduR and > in AUTOSAR COM. The PduR, as the name indicates, is responsible for > forwarding PDUs, corresponding to e.g. CAN frames or TP messages, > from one network to another. Contrary the signal gateway in COM is > responsible for forwarding signals from one network to another. > > A look at the SystemTemplate and the structure of PDUs and signal > might help to explain the difference. > > Best regards > > Oliver
• 
  Alexandru Nastas

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  Re^2: Question about Signal Gateway

  Hey Oliver,
  
  Thanks for a fast response. I can't actually find where the PDU and Signal structures are described. Could you direct me ?
  
  
  Thanks ,
  Alex
  
  • 11 Feb 2010, 08:57 am
  Alexandru Nastas wrote: > Hey Oliver, > > Thanks for a fast response. I can't actually find where the PDU and > Signal structures are described. Could you direct me ? > > > Thanks , > Alex
• 
  Oliver Meili

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  Re^3: Question about Signal Gateway

  Hello Alexandru,
  
  consider taking a look at Chapter 6 of the SystemTemplate specification. It describes Signal, PDU and Frame (not supported by AUTOSAR BSW) gateway functionality.
  
  Regards
  
  Oliver
  
  • 11 Feb 2010, 10:49 am
  Oliver Meili wrote: > Hello Alexandru, > > consider taking a look at Chapter 6 of the SystemTemplate > specification. It describes Signal, PDU and Frame (not supported by > AUTOSAR BSW) gateway functionality. > > Regards > > Oliver