Multicast Connections in Mobile Networks with Embedded Threshold Mechanism

Traffic Engineering for Multicast Connections in Multiservice Cellular Networks

“…6 with the results presented for the UMTS network in which the threshold mechanism has been introduced [23] for multicast connections, and the results obtained for the system in which threshold mechanisms have not been introduced (Fig. 5), it is clearly observable that the operation of the distributed traffic management environment does not influence the accuracy of the proposed computational method.…”

“…In such a case, a multicast connection to Iub links can be viewed as multicast connections (subconnections of the given multicast connection) directed to groups of Iub links in which each group is characterized by a different traffic management profile. By analyzing a component connection in which the th profile has been applied, it is observable that the blocking probability for a call of class in link that belongs to the group depends on the intensity of all traffic streams serviced by this Iub link [22], [23]. This dependence can be expressed in the form of the following function: (9) where denotes the traffic intensity of a class-1 stream offered to the Iub link .…”

“…If we use a centralized management in the network (one profile of traffic management), then the probability (13) is equal to one, and the method is simplified to the case described in [23].…”

“…The process of design and optimization of modern cellular networks should also take into consideration the growing popularity of distributive multimedia services, e.g., IP television (IPTV) [16], [17] and the video on-demand service (VoD) [18] that are based on multicast connections, i.e., connections that are directed to a number of subscribers who can be located in different cells. The problem of the execution of multicast connections in telecommunications and computer networks has been addressed in many works, for example, in [19]- [23]. In [19], a model of a node of the broadband network that services multicast connections is presented, while the work in [20] discusses the implementation of the standard multicast broadcast and multicast subsystem (MBMS) for the execution of multicast connections in the Universal Mobile Telecommunications System (UMTS) network.…”

“…In UMTS networks, multicast connections are used in the analytical model of the CAC function [22] located in radio network controller (RNC) and in the model of the radio interface for analysis the influence of intercell interference [21] on the capacity of the interface. The work in [23] presents a model in which one identical mechanism for traffic control (threshold mechanism) is introduced to each cell of the UMTS network.…”