Nokia Corporation

Nokia Corporatiion

Kimmo Valkealahti

Janne Laakso

Ari Henrik Hamalainen

Jaana Laiho

Albert Höglund

Janne Pöllönen

There is disclosed a technique for estimating a power change, particularly a power increase, in a communication system caused by a change in the load in the system. The technique particularly relates to a mobile communication system.

Power change estimation for communication system

The present invention relates to a method and a cellular radio network device () for controlling the admission of user () to a cellular radio network (). In order to determine how much traffic is allowed in a cell (), threshold values are autotuned using quality measurements gathered during high load on a link. Thus, the network capacity is in increased while fulfilling desired quality requirements.

Method and device for controlling admission of users to a cellular radio network

The invention is related to control of transmissions in spread spectrum radio systems, more accurately to estimating transmission power increases caused by new transactions in the system. According to the invention, the estimate or interference power increase due to a new transaction is calculated at least partly on the basis of the current fractional load, the current received interference power level, and a load factor &#x3b5;L, which is calculated essentially on the basis of the chiprate, the bitrate of the new transaction, and the estimated required signal-to-interference ratio for the service type of the new transaction.

Power estimation method

A method and device for selecting transmission power and bit rate in a wireless telecommunications network, especially in the context of open loop power control, is disclosed. Transmission power and bit rate are selected in response to input parameters so as to minimize a cost function representing induced interference and transport delay.

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Helsinki, Finland

Kimmo Valkealahti