Study On Associated Strategies Of ADSL Access Network Resource Allocation And Pricing

The communication network is being developed to provide high capacity transmission capabilities. With the application of optical communication technologies, the network capacity has been increased to an un-precedent level. Mean while, the demand for multi-media traffics such as video and data increase continuously. In order to satisfy the demand, telephone networks, cable television network and computer network (e.g. Internet) are evolved to a traffic-integrated network: broadband services integrated data network. This integrated information network could provide multiple different services via the same transmission system. However, the different traffics carried on the same transmission network differ in requirements for transmission performances. The requirements of different traffics make the network management more difficult than ever. On the other hand, as access network is facing subscribers of large quantity, subscriber variety and multi-services categories lead to complex billing. The network billing therefore becomes another hot issue.The contention of this thesis is that price signal can be considered incentive for coordinating the transmission behaviors of multi services and users, billing system itself can act as a resource allocation mechanism. Based on this philosophy, the research caters to the topics on the associated operation of ATM network resource allocation and pricing strategy. The main achievements described in this thesis include the following:The bandwidth allocation and pricing strategy research for various classes of traffics in ADSL network. The Paris Metro Pricing method is modified and applied. By setting different prices, subscribers are encouraged to self-decide the logical path their want via non-cooperative gaming and therefore automatically obtain different QoS classes. At the same time, by applying the pricing system which can guarantee the stable equilibrium of the subscribers choice and differences in QoS classes, the bandwidth allocation for various classes are realized to maximize revenue of the network services. The simulation proved that this bandwidth allocation can guarantee better QoS for high class traffic and generate higher revenues compared with the other two practically used methods in the telecom, industry. To continue the above research, traffics distributed bandwidth allocation and pricing for homogenous traffics in ADSL network are studied. Adopting the ATM technology architecture and resource management format based on Virtual Circuit (VC) and Virtual Path (VP), the network provider and subscribers are modeled as Stackelberg Game. The global flow rate control optimization problem is divided to several sub-problems and the solution of the sub-problmes is also the Pareto solution of the global problem. By comparative study with the fixed pricing strategy which is widely applied, this Stackelberg Game allocations shows profound advantages in quality guarantee and control as well as obtaining higher system benefits.Finally, the research covers the Link sharing problem in ATM network during congestion. The fair sharing principle of traffic flow control is complemented by pricing control, the traffic connection admission control strategy based on auction mechnism is proposed and the resource is allocated according to the offer prices of subscribers via Vickrey auction.The three aspects above represent the three focuses of this research regarding ADSL network resource allocation, which is expected to be applied for distributed billing and network resource management in telecom, networks.