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In most studies on code-division multiple access/packet reservation multiple access (CDMA/PRMA) for uplink time-division duplexing (TDD) single-hop cellular networks (SCNs), perfect power control is assumed and each time slot is divided into fixed number of code slots. It is always assumed that this capacity of a time slot can be fully utilized. However, in practice the mobile stations have limited...
A general formula for the cross polarization discrimination (XPD) of multiple input multiple output antennas at mobile station is provided, taken the influence of mobile antenna inclination into account. A statistical distribution indoor model for both vertically polarized and horizontally polarized incident waves that are uniform in elevation and in azimuth is also proposed. By using the formula...
The seamless internetworking among multiple heterogeneous networks is in demand to provide ldquoalways-onrdquo connectivity services with QoS provision quality, anywhere, anytime. The hybrid networks of WLAN and WMAN can provide high data rate and enhanced multimedia services, but it is challenging to obtain optimized handover decision based dynamic QoS information. The IEEE 802.21 aims at providing...
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...
In this paper, we propose a suitable set of protocols schematically combining both radio handover and IP handover for heterogeneous network with the enhancement of relay nodes, that is considered as an important feature of the future radio network. Based on that, we develop the functional allocation of media independent handover entities for a 4G communication system developed by the European WINNER...
In this paper we present empirical results from a study, examining the effects of environmental diversity on vehicle-to-vehicle link in vehicular ad hoc networks (VANET). And packet loss rate (PLR) and received signal strength indicator (RSSI) of the wireless link are measured. The results of the measurement indicate that environment affects the quality of the wireless link in VANET greatly; the average...
An adaptive location management scheme, called as MPA (Mobility Pattern Adaptive) scheme is proposed for the multi-beam GMSS (Geostationary Mobile Satellite System). Compared with the traditional schemes applied in the terrestrial mobile communication systems, a restraining updating strategy will be applied to the low velocity MES (Mobile Earth Station). Additionally, based on the information theory...
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