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With the anticipated exponentially increasing traffic demand in future mobile networks, energy consumption becomes a significant challenge of the information and communication technology industry. Heterogeneous network (HetNet) is a promising infrastructure for both expenditure and energy saving for cellular operators and has attracted intensive research interest. In HetNets, offloading traffic from...
Radio resource allocation strategy is one of the key issues in wireless CDMA cellular networks, which not only has to ensure that the system guarantees potentially different QoS requirements from diverse applications, but also fully utilizes the scarce wireless resources. Meanwhile, in CDMA cellular networks, successive interference cancellation (SIC) technique can be employed to reduce multiple access...
The various characteristics of wireless environments deteriorate the performance of the wireless system sharply in terms of system throughput, network capacity and TCP performance. There are lots of protocols which can significantly improve the TCP performance, such as Snoop, which uses the method like hiding the packet loss from the TCP sender. However when handoffs occur, the packet loss due to...
In this paper we address the issue of cross-layer design in transport layer enhancement mechanisms, where the data-link and transport layer information is shared with each other, in order to provide improved system throughput of the wireless cellular network. We propose a cross-layer transport layer enhancement mechanism with name of XST (cross-layer snoop protocol for TCP), which is based on Snoop...
One of the key challenges in multi-services wireless cellular networks is the design of effective call admission control (CAC) algorithm, which not only has to ensure that the system guarantees potentially different QoS requirements from diverse applications, but also fully utilizes the scarce wireless bandwidth. On the uplink of a CDMA cellular network, successive interference cancellation (SIC)...
TCP has been shown to perform poorly in wireless environments in terms of throughput due to the inherent nature of wireless links. In this paper, we propose a Snoop-Based TCP Enhancements Scheme with Forced Duplicate Acknowledgement-(STE-FDA) over wireless cellular network, which combine both of Snoop-like TCP enhancements and the Forced Duplicate Acknowledgement (FDA) congestion control scheme at...
One of the key challenges in multi-services wireless cellular networks is the design of effective access control policy (ACP) algorithm, which not only has to ensure that the system guarantees potentially different QoS requirements from diverse applications, but also fully utilizes the scarce wireless bandwidth. On the uplink of a CDMA cellular network, successive interference cancellation (SIC) technique...
In this paper, we present an opportunistic packet scheduling algorithm based on buffer management (OSBM) over the downlink of a packet cellular network. OSBM is a channel-dependent scheduling algorithm with a provable delay bound. It is able to provide differentiated services to both real-time and nonreal-time applications. Particularly, these features of OSBM are achieved through a novel buffer management...
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