Abstract
Dynamic radio link adaptation is a key component in WCDMA/3G wireless networks to improve the spectral efficiency while meeting the radio link level QoS (Quality of Service) requirements such as the BER (Bit Error Rate) requirements for the different wireless services. Again, performance of an end-to-end protocol, such as TCP (Transmission Control Protocol) depends on the performance of the underlying radio link adaptation technique. A multilayer modelling of the WCDMA/3G radio interface is therefore necessary to better understand the inter-layer protocol interactions and identify suitable transport and radio link layer mechanisms to improve TCP performance in a wide-area cellular WCDMA/3G network. In this article, we present such a multilayer system model to analyze TCP performance under joint rate and power adaptation with constrained BER requirements for downlink data transmission in a cellular VSF (Variable Spreading Factor) WCDMA/3G network. To this end, we present the outline of a more general model which can completely describe the interaction between TCP and the radio link adaptation and error control protocol. We give an example of using such a model to design radio link layer scheduler for achieving high wireless link utilization.
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Hossain, E., Bhargava, V.K. (2005). Cross-Layer Performance in Cellular WCDMA/3G Networks: Modelling and Analysis. In: Ganesh, R., Kota, S.L., Pahlavan, K., Agustí, R. (eds) Emerging Location Aware Broadband Wireless Ad Hoc Networks. Springer, Boston, MA. https://doi.org/10.1007/0-387-23072-6_1
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DOI: https://doi.org/10.1007/0-387-23072-6_1
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