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Traffic demand increases explosively due to the developed services and it becomes the mobile network's load. One of these services, social networking, generates a large amount of traffic. To solve it, we propose a small cell offloading algorithm using social context. In the proposed algorithm, to satisfy the effective data rate maximally, we estimate the application selection probability using social...
Recently, enormous growth of mobile data traffic can be load to operator's core network. Offloading traffic is a promising solution to alleviate the load. The 3GPP proposes the offloading solutions such as local IP access (LIPA) and selected IP traffic offload (SIPTO). Based on the LIPA/SIPTO, many relate works provides the offloading procedures and schemes but it doesn't take the network condition...
A handover (HO) is an important procedure used to maintain connectivity in mobile networks. Nevertheless, it is not sufficient when a user equipment associates with a certain base station for a very short period. In this letter, we propose an estimated time-of-stay-based cell selection (ETCS) scheme to minimize the number of unnecessary HOs that adversely affect the performance of heterogeneous mobile...
Today, mobile data traffic explosively increases and it can be load to operator's core network. To reduce the load, 3GPP proposes the offloading solutions such as local IP access (LIPA) and selected IP traffic offload (SIPTO). For offloading algorithm, there are many related works based on the LIPA/SIPTO but some research works beyond the LIPA/SIPTO. However, these related works don't consider network...
In heterogeneous wireless environments which change dynamically, the optimal network selection problem is one of the key issues. This paper proposes a network selection scheme based on the required bandwidth, which estimates the bandwidth required to satisfy the quality of service (QoS) requirements of the target service. Required bandwidth can be estimated from the signal strength of each access...
This paper defines an end-to-end QoS functional model for mobile WiMAX systems and investigate several technical issues. Our main contribution is to analyze the end-to-end QoS variations in mobile WiMAX systems according to the QoS functions. We discuss the strong and weak points of QoS related functions, which can be affected by the network architecture, and propose the design examples of a service...
This paper proposes a cooperative scanning mechanism to overcome the increased service disruption time due to the successive scanning of the mobile relay station(MRS) and its subordinated mobile stations(MSs) in the moving network environment. The proposed mechanism regulates that the scanning duration of the MSs attached to the MRS is overlapped with that of the MRS. It results in the decreased service...
In the heterogeneous wireless networks, the optimal network selection problem is one of the key issues. QoS aware path selection scheme is proposed in this paper, which estimates required bandwidth ratio based on the QoS requirements of target service and the SINR of each path. The proposed scheme can select the optimal path which can satisfy the QoS requirements among many heterogeneous wireless...
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