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e are certain solution proposed to this problem like instead of assuming any other shape, every area is assumed to be spherical that is highly unrealistic and in case of generalizing to all the situations pose serious issues as no surface in reality strictly follows geometrical rules and regulations. Ironically, problems don’t end up to the above mentioned issues instead there is another problem with its continuous variations over the period of time. Problem is that there is a possibility of staying long of the regime which is not stationary. Lengthening of this phase can be avoided by removing the early parts of the stimulations. But by doing so, still it accessing of stimulation to the transient phase cannot be ensured. Another important point is that the time which is taken to reach the motionless regime is even more that the time which stimulation, itself, takes. Another loophole is observed in the form of decay in the speed with gradual movement through time [15].

 

Single Node Mobility Models

As mentioned earlier that there are many models throwing light on the phenomenon of human mobility and there are certain drawbacks in every model along with certain positive points. This category of models is different from the previously discussed models in the respect that the movement of the nodes is elaborated in a different manner by considering them independent of each other. This model has valued the point of random distribution of movements but has not valued their interdependency. There are certain models in this category like Random Direction mobility model proposed by P. Nain, D. Towsley, B. Liu, and Z. Liu (2005) [20]. There is another model that falls in the same category called Gauss-Markov mobility model presented by B. Liang and Z. J. Haas (2003) [4]. Along with the above mentioned models, Smooth Random mobility model also carries its place in the same category. This model was proposed by C. Bettstetter in 2001 [1]. Question arises why there was a need to introduce this sort of models and the answer to these question lies in these becoming more suitable in terms of mathematics.

 

There was another objective behind development of other random mobility models and that was of replication of the movements in built-up spaces. Typology and the structure of the streets force the nodes to move in a particular fashion. Not only the direction but speed is also dependent upon the structure of the streets. This type of models are proposed by T. Camp, J. Boleng, and V. Davies (2002) [25] & F. Bai, N. Sadagopan, and A. Helmy (2003) [11]. Temporary mobile networks’ technologies get help from this type of models for dynamic settings.

 

Social Network based Mobility Models

It was in one of the previous sections that human mobility is not only a statistical or mathematical concern instead it is very important in social concerns too. There is a very prominent category 本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。