Congestion measures in DS-CDMA networks
Stephen Vaughan Hanly · IEEE Transactions on Communications · 1999
We investigate the notion of "congestion" in spread spectrum wireless networks, such as those employing direct-sequence code-division multiple access. We find "congestion" to be multidimensional in nature, but two features emerge: (1) when congestion occurs, transmit powers and cell site interference levels increase and (2) capacity constraints are approached. Among other measures, we focus on a particular measure, /spl lambda/, which is immediately of interest, since /spl lambda/<1 is the condition for network feasibility. We relate /spl lambda/ both to the "power warfare" that arises as "capacity limits" are approached, and to the level of traffic in the network, where we consider traffic in regions ranging from local (single cells) to global (the whole network).