Hi Francesco, centainly it is a high risk for OSGi in the dynamic modularity moving to the JVM (where it should be, ...and discussions already started for Java 8.) in this context. However, looking at the trends and taking into account the current penetration of the software (the largest part not developed by traditional SW companies) it is risky to say that something like Java can not be created by volunteers (if non software organisations, including the academia, are in this category). This will create a big problem for large software companies and they are aware of this. If the JVM pressure does not work OSGi could be an alternative...although this is not new ;-)). Best regards, -Jesus- ps: ...it seems to be some sort of negotiation, Who wants lo leave Java?
Francesco Furfari Enviado por: promoters-boun...@aaloa.org 19/12/2010 20:13 Para: "promoters@aaloa.org" <promoters@aaloa.org> cc: Asunto: Re: [aaloa promoters] [Vote] Call for Vote on a project proposal: ZigBee 4 OSGI Jesus, thanks, well I knew about the theoretical limit and also that there are many open issues with the mesh topology ... However regarding competitors, I don't know many other OSS solutions so far. ProSyst Software provides a commercial solution but it seems they use a different design, we are a step forward by modelling a ZB cluster Library. We did a search some time ago but we found only "empty" projects (mainly on sourceforge). In any case they were based only to provide a classical ZigBee driver interface, while our approach follows the OSGi Access Specification. I know that soon will be ready the ZigBee Gateway specification (with WS and restful interfaces) , they had some preliminary test in Irland in these weeks, but our solution is different and most importantly can be used to implement their specification. There are also rumours of a new OSGi ZigBee Device specification, but the CNR is not member of OSGi Alliance so we cannot participate to the Working Group. By the way we hope to be involved at least in the proposal submission. Occasionally, in this regard there is an interesting comment to the post of Peter Kriens: "JCP is dead" http://www.osgi.org/blog/2010/12/jcp-is-dead.html WDYT ? Will OSGi change his policy? ;-) Francesco Il 19/12/2010 18.28, jesus.berm...@telvent.com ha scritto: Hi Francesco, I will try to clarify my comment on your answer; >in the project proposal we say that ZigBee covers many application >domains very useful for AAL related project, but we don't mean that >ZigBee must be the reference technology for AAL applications. >We are aware that there are many competing solutions, IP6LowPan, >Wireless HART, or UPnP, DPWS .... When I mention the risk in the survival of the open source project I am referring to external open source competitors. As you are mentioning, it is not a core/reference technology for AAL applications(note that open source is more competitive than traditional commercial development) >I didn't understand your last example. In theory ZigBee networks can >contains 65.000 nodes, enough for the smart environments we are >addressing, but I guess you was thinking to a different use case. > >From the inputs I have so far it seems that this number of nodes is difficult to achieve in real deployments; and this is a R&D issue being tackled in other domains. The example was just to illustrate the type of requirements being addressed for this technology in other domains (to clarify the above). ...and it is not only this, also the current strength of some middleware communities. >The scalability issues in my mind are that ones related to the remote >management of thousand of devices; a control center that has to >remotely manage many smart home installations, the remote upgrade of >the software/firmware installed in such environments, and so on ... >but IMO the problems are not on the ZigBee side. I fully agree, this scalability is not in the ZigBee part, Best regards, -Jesus- -----promoters-boun...@aaloa.org escribió: ----- >Para: "promoters@aaloa.org" <promoters@aaloa.org> >De: Francesco Furfari <francesco.furf...@isti.cnr.it> >Enviado por: promoters-boun...@aaloa.org >Fecha: 19/12/2010 16:32 >Asunto: Re: [aaloa promoters] [Vote] Call for Vote on a project >proposal: ZigBee 4 OSGI > > >Jesus, > > >in the project proposal we say that ZigBee covers many application >domains very useful for AAL related project, but we don't mean that >ZigBee must be the reference technology for AAL applications. > >We are aware that there are many competing solutions, IP6LowPan, >Wireless HART, or UPnP, DPWS .... > >With respect to the AALOA mission, this project can be considered one >of the many building blocks that may be integrated in a reference >platform for AAL. > >It is an outcome of the PERSONA project, but it is released without >the "peculiarities" of the PERSONA project, so that it is a generic >solution that can be integrated in the AAL/AmI platform you like. > > >I didn't understand your last example. In theory ZigBee networks can >contains 65.000 nodes, enough for the smart environments we are >addressing, but I guess you was thinking to a different use case. > >The scalability issues in my mind are that ones related to the remote >management of thousand of devices; a control center that has to >remotely manage many smart home installations, the remote upgrade of >the software/firmware installed in such environments, and so on ... >but IMO the problems are not on the ZigBee side. > > >Francesco > > > >Il 19/12/2010 0.33, >jesus.berm...@telvent.com > >ha scritto: > >Dear all, > > >My vote is positive ... > >however, it is not clear the strategy for the AAL domain being the >driver for the evolution of Zigbee out from a ZigBee for Health Care >profile (which is a very limited area in the scope of this >technology). This combined with the current activity in this >technology entails a high risk for the survival. > > > >Just to mention an additional implementation being integrated in >device abstraction activities running in OSAmI project; the >(paralell) R&D activities of the team involved in this technology are >moving in the direction of overcoming the current limitations in the >number of nodes in the context of real deployment scenarios (some >already in operation) which are difficult to find in the AAL domain. > > > > >Best regards, > > > >-Jesus- > > > >-----promoters-boun...@aaloa.org escribió: ----- > > >Para: >"promoters@aaloa.org" > ><promoters@aaloa.org> > >De: Francesco Furfari ><francesco.furf...@isti.cnr.it> > >Enviado por: >promoters-boun...@aaloa.org > >Fecha: 16/12/2010 14:58 > >Asunto: [aaloa promoters] [Vote] Call for Vote on a project proposal: >ZigBee 4 OSGI > > >Dear Governing Board of AALOA, and Promoters, > > >I would like to submit to your attention the attached project >proposal > > >concerning the ZigBee networks integration with the OSGi platform. > > > >I ask you to consider it for becoming an AALOA Project and to >allocate > > >the needed resources for its software development. > > > >As promoter of this proposal and member of the Governing Board I will > > >abstain from voting on this issue. > > >I remember to the promoters that even if they haven't a binding >vote, > > >their comments are very welcome. > > > >Kind regards, > > >Francesco. > >(See attached file: ZigBee4OSGi project proposal_v4.pdf) > > >_______________________________________________ > > >Promoters mailing list > > >Promoters@aaloa.org > > >http://aaloa.org/mailman/listinfo/promoters > > > >[anexo "ZigBee4OSGi project proposal_v4.pdf" eliminado por Jesús >Bermejo Muñoz/Telvent/Abengoa] > > > > >_______________________________________________ > >Promoters mailing list >Promoters@aaloa.org >http://aaloa.org/mailman/listinfo/promoters > > > > >_______________________________________________ > >Promoters mailing list > >Promoters@aaloa.org > >http://aaloa.org/mailman/listinfo/promoters _______________________________________________ Promoters mailing list Promoters@aaloa.org http://aaloa.org/mailman/listinfo/promoters _______________________________________________ Promoters mailing list Promoters@aaloa.org http://aaloa.org/mailman/listinfo/promoters