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Generations of wireless systems are all the time a big topic for the research as well as deployment of wireless community. Cellular service providers are already in the last phase of the deployment of third-generation (3G) services in major parts of the world realistically with an achievement of higher data rates, even though the expected standards...
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... of the most challenging problems facing deployment of 4G technology is how to access several different mobile choices Table 2 compares some of the key parameters of 3G and 4G (4G does not have any solid specification as of yet, so the parameters rely on general proposals). It is clear that some standardization is in order. ...
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Citations
... Throughput is defined as the total data packet size that Requester receives. The theoretical data rate of 802.11p is 54 Mbps in the maximum but the data rate of DSRC is 27 Mbps in the real environment [24]. Our measurement studied the effect on the performance of various points of view. ...
In this paper, we proposed routing protocols for transmission over VANET in a platoon of vehicles that are driving together on the highway from the same starting point with the same route, and going to the same destination. The purpose of the routing protocols is to have cooperative video streaming service for a specific platoon member, i.e., it belongs to multiple-source to single-destination transmission. We considered two strategies that route data from multiple-source to single-destination. The first one is the severalty strategy in which each data source forwards packets through a route that contains common nodes of other paths as few as possible. The severalty strategy tries to increase the reliability of the route from source to destination and to achieve load balance by Helper-disjoint algorithm. The another strategy is the merged strategy which merges multiple traffic flows passing some specific nodes together. The main purpose of merged strategy tries to reduce the probability of collision while wireless resource are competing to forward data simultaneously and to increase the utilization of DSRC. In this paper, we proposed On-Demand Member-Centric Routing (OMR) protocol using the severalty strategy and Reactive Member-Centric Routing (RMCM) protocol using the merged strategy. Based on the simulation results, our proposed member-centric routing protocols effectively improve the packet delivery ratio and throughput compared with using others in the aforementioned platoon scenario over VANET.
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... However, their demands are increasing due to the experienced level of satisfaction by the offered services and the 4G connectivity prevails. 6 In region II, the great majority of the subscribers demand for HB services and the MO provides 4G networking to a noticeable proportion of the network. In this case, both the subscribers' needs and the proportion of 4G networking increase, and because the 4G connectivity is an asymptotically stable equilibrium, the 4G technology prevails. ...
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