An introduction to situation aware networks

Abstract-The following paper examines the capability of extending basestation sector beams in order to assume coverage in a partially or fully failed neighbouring cell. Increasing the transmit power of the sector to reach out for new users is not possible in UMTS since it increases integerence in the system. This paper considers how adaptive coverage can be implemented in practice. Analysis suggests that pe$ormance is downlink limited. A balanced link power algorithm is required to provide the extra power for increasing the range capability of the sector Furthermore, it is found that up to 25% of users (premium rate customers) in a failed heavily loaded cell can be supported by sector extension. This figure approaches 100% for a lightly loaded cell, or the more practical case of sector failure. In all cases, SA significantly enhances the number of users that can be supported anywhere in the failed cell.

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“…quality is implemented by solving equation (1) (maximising the minimum transmission quality for users of cell k) [7].…”

Section: Downlink Power Controlmentioning

confidence: 99%

Adaptive coverage for UMTS macrocells based on situation awareness

Sharma

Spilling

Nix

IEEE VTS 53rd Vehicular Technology Conference, Spring 2001. Proceedings (Cat. No.01CH37202)

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“…For example, such methods enable the detection and automatic rectification of coverage problems in the network. As such if a basestation sector was to fail then the radio resource can be automatically reallocated through the use of a lighthouse beam [3]. For subscribers, this is expected to significantly increase their perceived QoS.…”

Section: Introductionmentioning

confidence: 99%