Method and arrangement for defining transmission power in a mobile station
First Claim
1. A method for defining transmission power of a mobile station during a connection between a mobile station and a mobile communication system, when data transfer in an uplink transfer direction occurs at least at one time slot of a TDMA frame and, during the connection, a new time slot is allocated for the uplink transfer direction of the connection, characterized in that transmission power of said new time slot is defined on the basis of transmission power of said at least one time slot used in the uplink transfer direction of said connection.
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Abstract
The invention relates to a method (500) and an arrangement for defining transmission power in a mobile station. The invention can preferably be applied in a TDMA (Time Division Multiple Access) cellular system which offers broadband services and in which the number of time slots to be used for data transfer can be changed during the connection (530). One fundamental idea of the invention is that the transmission power of a new time slot is defined in the mobile station on the basis of the transmission power of at least one other time slot used in the connection (560). If the connection has had one time slot for its use when a new time slot is being allocated, for the transmission power of the new time slot, the same value is preferably set as at the previous time slot. If the connection has had two or more time slots for its use when a new time slot is being allocated, the value of the transmission power of the new time slot is preferably defined on the basis of the transmission powers of these other time slots according to a previously defined algorithm. As the algorithm, a minimum value, a maximum value or an average value can preferably be used.
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Citations
10 Claims
- 1. A method for defining transmission power of a mobile station during a connection between a mobile station and a mobile communication system, when data transfer in an uplink transfer direction occurs at least at one time slot of a TDMA frame and, during the connection, a new time slot is allocated for the uplink transfer direction of the connection, characterized in that transmission power of said new time slot is defined on the basis of transmission power of said at least one time slot used in the uplink transfer direction of said connection.
- 8. A mobile station linked to a mobile communication system, which comprises means for transferring data at least at one time slot of a TDMA frame and means for allocating a new time slot during a connection, to the uplink direction of the connection characterized in that it comprises means for defining transmission power of said new time slot on the basis of transmission power of said at least one time slot used in the uplink data transfer of said connection.
Specification