Gestión de la mobilidad. (Vicente Casares)
This session was a continuation to the last session. We picked up from where we left by covering the last two technologies of the last session's programme: WIMAX and WLAN.
From WIMAX (OFDM) we covered the packet-stucture and the MAC layer including the 4+1 service types for QOS. Then we continued to WLAN of which we saw the OSI-7 layered technical architecture, the MAC layer and the packet management solution (DIFS, PIFS and SIFS). All of this was for me recapitulation of what I had just went through in the fall's Redes Publicas I course.
Next we stepped into today's actual subject - Mobility management (Which actually includes the above mentioned packet management solution). In a short time we covered quite well the architecture used in tracking mobile stations used in GSM. We also skimmed through very quickly the micro- and macro-mobility subject in the case of all-IP/UMTS mobility management. Finally we discussed the general idea of cellular IP.
maanantai 21. huhtikuuta 2008
torstai 17. huhtikuuta 2008
Clase 14. de abril
Accesos a internet: Redes Inalámbricas (Vicente Casares)
In this lecture we stepped into a new theme - Infrastructure. The first lecture by Vicente Casares of wireless internet access was very different in nature. As where earlier the themes have been analyzed from various angles such as sociological and historical, this theme on its part was approached from a very technical perspective. This is quite appropriate because of the inherently technical nature of the subject but on the other hand this is also certainly familiar content from other courses such as Redes Publicas I by Vicente Casares. Still, the content of the lecture is challenging and as such, recapitulation is highly valued. On the other hand the lecture would not have served in an other manner as a very wide area of content was skimmed through with an impressive pace.
The technologies that were discussed in this class were the following
In this lecture we stepped into a new theme - Infrastructure. The first lecture by Vicente Casares of wireless internet access was very different in nature. As where earlier the themes have been analyzed from various angles such as sociological and historical, this theme on its part was approached from a very technical perspective. This is quite appropriate because of the inherently technical nature of the subject but on the other hand this is also certainly familiar content from other courses such as Redes Publicas I by Vicente Casares. Still, the content of the lecture is challenging and as such, recapitulation is highly valued. On the other hand the lecture would not have served in an other manner as a very wide area of content was skimmed through with an impressive pace.
The technologies that were discussed in this class were the following
- GPRS (General Packet Radio Service)
- UMTS (Universal Mobile Telecommunications System)
- HSPA (High-Speed Packet Access)
- WIMAX (World-wide Interoprability for Microwave Access)
- WLAN (Wireless LAN)
Clase 11. de abril
Marco legal (José Ramon Vidal)
The second lecture on the theme of internet and society was the first one held in our university. The subject by José Ramon Vidal was the legal framework of the information society. This was for me an old subject from the course Information Society II by Antonio Alabau. The way I see it, it is very important for an engineer to know about the basics of the most important laws that apply for the electronic commerce and information society services, for without such knowledge you can never really achieve understanding of why some aspects of services are done as they are.
This subject was approached by mr. Vidal from three subthemes. The first, the legal regimen includes the following three legislations:
The intellectual property legislation, namely the copyright system is a problematic and controvercial theme because of the regional differences around the world. Fortunately an individual engineer does not in my oppinion need an overly detailed expertise on this area, but it is important to know the basics.
The final subject, the proteccion of personal data on the other hand is a very important to know on both national and international level. The spanish legislation on the subject is namely from the year 1999. Personally I should familiarize myself with the finnish legislation but at the EU - USA scale, that was covered is something worth knowing.
When covering the subject of legislation it should always be noted, in addition to the actual content of the legislation, how the legislation is supervised and what kind of sanctions are implemented. Additionally a quite challenging aspect, especially in the area of electronic services, is how the legislation works on an overall international scale.
The second lecture on the theme of internet and society was the first one held in our university. The subject by José Ramon Vidal was the legal framework of the information society. This was for me an old subject from the course Information Society II by Antonio Alabau. The way I see it, it is very important for an engineer to know about the basics of the most important laws that apply for the electronic commerce and information society services, for without such knowledge you can never really achieve understanding of why some aspects of services are done as they are.
This subject was approached by mr. Vidal from three subthemes. The first, the legal regimen includes the following three legislations:
- The law on electronic commerce and information society services
- The law on electroic signature
- The legislation on commercial contracts
The intellectual property legislation, namely the copyright system is a problematic and controvercial theme because of the regional differences around the world. Fortunately an individual engineer does not in my oppinion need an overly detailed expertise on this area, but it is important to know the basics.
The final subject, the proteccion of personal data on the other hand is a very important to know on both national and international level. The spanish legislation on the subject is namely from the year 1999. Personally I should familiarize myself with the finnish legislation but at the EU - USA scale, that was covered is something worth knowing.
When covering the subject of legislation it should always be noted, in addition to the actual content of the legislation, how the legislation is supervised and what kind of sanctions are implemented. Additionally a quite challenging aspect, especially in the area of electronic services, is how the legislation works on an overall international scale.
Clase, 7. de Abril
Tecnologías de la información y las comunicaciónes (TIC) y la sociedad (Germán Santos)
This was the first of three lectures about internet and society. The class consisted of themes such as negotiation models, a modular view of web 2.0 meaning e.g. widgets and mashups. Also many old subjects were reassessed such as social networks (myspace, facebook etc.), weblogs and wikies and web OS's (e.g. Google apps). The class ended with a view into how services are offered in Spain and Europe, which was done by reviewing many statistics that are generally used to measure the state of the Information Society. As such, these statistics as well as many of the currently assessed subjects were familiar to me from the ongoing course named Information Society II.
The part that was really interesting about this lecture was the analytical viewpoint into how the service implementation develops in time. A very important part in analysing the success of a certain service or phenomenon is its degree of implementation, which in turn opens up for the possibility of analysing how the service is currently growing or diminishing. Also important is the aspect of what types of cervices were used before and if new web 2.0 types of cervices have superseded these classical services or perhaps supplemented its use. This kind of analytical assesment helps to better understand how electronic services are currently evolving and which technologies may enable for the emergence of new next generation applications and services.
One additional viewpoint in my oppinion and perhaps the most important of all in analysing this evolution is in the thorough understanding of the basic customer needs behind offered services. Next generation eServices are not only oriented towards the needs that the internet has traditionally been used for (such as information retrieval, communication and entertainment) but also for example in supplementing some other types of services such as television and newspapers.
This was the first of three lectures about internet and society. The class consisted of themes such as negotiation models, a modular view of web 2.0 meaning e.g. widgets and mashups. Also many old subjects were reassessed such as social networks (myspace, facebook etc.), weblogs and wikies and web OS's (e.g. Google apps). The class ended with a view into how services are offered in Spain and Europe, which was done by reviewing many statistics that are generally used to measure the state of the Information Society. As such, these statistics as well as many of the currently assessed subjects were familiar to me from the ongoing course named Information Society II.
The part that was really interesting about this lecture was the analytical viewpoint into how the service implementation develops in time. A very important part in analysing the success of a certain service or phenomenon is its degree of implementation, which in turn opens up for the possibility of analysing how the service is currently growing or diminishing. Also important is the aspect of what types of cervices were used before and if new web 2.0 types of cervices have superseded these classical services or perhaps supplemented its use. This kind of analytical assesment helps to better understand how electronic services are currently evolving and which technologies may enable for the emergence of new next generation applications and services.
One additional viewpoint in my oppinion and perhaps the most important of all in analysing this evolution is in the thorough understanding of the basic customer needs behind offered services. Next generation eServices are not only oriented towards the needs that the internet has traditionally been used for (such as information retrieval, communication and entertainment) but also for example in supplementing some other types of services such as television and newspapers.
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