Uplink Load in CDMA Cellular Radio Systems

Geijer Lundin, ErikLinköpings universitet,Reglerteknik,Tekniska högskolan (author)

© 2006 IEEE.
Well-operating resource-management algorithms are crucial in wireless networks for ensuring the quality of service and, perhaps more importantly, for securing stability when operating at high load. These algorithms benefit from accurate feedback of the current network load. In the uplink of a code-division-multiple-access cellular network, the load is strongly related to the uplink noise rise, i.e., the ratio between total received power and background-noise power. This paper is primarily concerned with characterizing and approximating the uplink load. Two different load definitions are made. These relate to the received and transmitted carrier powers, respectively. Bounds that can be established in practice, e.g., before a resource decision is made, are used to develop a procedure for approximating the uplink load in practice. Furthermore, a stochastic approach to link budgets is used to establish the uplink load's role in the tradeoff between coverage and individual user satisfaction. Simulations indicate that the average error of the proposed load approximations is small for all load levels expected to appear in practice.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Reglerteknik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Control Engineering hsv//eng
Link budgets
Load approximations
Maximum noise rise
System load
System stability
Uplink noise-rise variance
TECHNOLOGY
TEKNIKVETENSKAP
Automatic control
Reglerteknik

Gunnarsson, FredrikLinköpings universitet,Reglerteknik,Tekniska högskolan(Swepub:liu)fregu52 (author)
Linköpings universitetReglerteknik (creator_code:org_t)

In:IEEE Transactions on Vehicular Technology: IEEE Vehicular Technology Society55:4, s. 1331-13460018-95451939-9359

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