Method and arrangement for effecting transmission power control and/or handover of a mobile station assigned two or more time slots per frame in a TDMA telecommunications system
First Claim
1. A method for power control of a mobile station in a mobile telecommunications system, the method comprising:
- transmitting data over a radio path between a mobile station and a base station of a fixed radio network as bursts in time slots of successive frames;
allocating the mobile station at least two time slots in each frame for transmitting a high-speed data signal having a data rate which is higher than that supported by use of one time slot in each frame;
splitting the high-speed data signal into a plurality of lower-speed sub-signals corresponding in number to the number of allocated time slots;
the transmitting including transmitting the lower-speed sub-signals over the radio path as respective separate bursts in each of the allocated time slots;
upon reception of the separate bursts transmitted over the radio path, combining the lower-speed sub-signals, thereby restoring the high-speed data signal;
measuring, at the mobile station in each time slot allocated to the mobile station, at least one characteristic of a received signal, the characteristic selected from the group consisting of signal level and signal quality; and
controlling the transmitting power of the mobile station on the basis of one of (a) a combination of measurement results of two or more time slots assigned to the mobile station, and (b) a measurement result of the poorest time slot in relation to the at least one characteristic.
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Accused Products
Abstract
A method and an arrangement for controlling transmitting power of a mobile station and carrying out a handover in a mobile telecommunications system in which data is transmitted over the radio path between a mobile station and a base station as bursts in time slots of successive frames. A mobile station can be allocated at least two time slots in each frame for high-speed data transmission. The mobile station is arranged to measure the characteristics of the received signal, such as the signal level and/or quality, in each time slot allocated to the mobile station, and the fixed radio network is arranged to control the transmitting power of the mobile station and/or make the decision on a handover on the basis of a combination of measurement results of two or more time slots, or on the basis of the measurement result of the poorest time slot.
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Citations
13 Claims
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1. A method for power control of a mobile station in a mobile telecommunications system, the method comprising:
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transmitting data over a radio path between a mobile station and a base station of a fixed radio network as bursts in time slots of successive frames; allocating the mobile station at least two time slots in each frame for transmitting a high-speed data signal having a data rate which is higher than that supported by use of one time slot in each frame; splitting the high-speed data signal into a plurality of lower-speed sub-signals corresponding in number to the number of allocated time slots; the transmitting including transmitting the lower-speed sub-signals over the radio path as respective separate bursts in each of the allocated time slots; upon reception of the separate bursts transmitted over the radio path, combining the lower-speed sub-signals, thereby restoring the high-speed data signal; measuring, at the mobile station in each time slot allocated to the mobile station, at least one characteristic of a received signal, the characteristic selected from the group consisting of signal level and signal quality; and controlling the transmitting power of the mobile station on the basis of one of (a) a combination of measurement results of two or more time slots assigned to the mobile station, and (b) a measurement result of the poorest time slot in relation to the at least one characteristic. - View Dependent Claims (2, 3, 4)
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5. A handover method in a mobile telecommunications system, the method comprising:
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transmitting data over a radio path between a mobile station and a base station of a fixed radio network as bursts in time slots of successive frames; allocating to the mobile station at least two time slots in each frame for transmitting a high-speed data signal having a data rate which is higher than that supported by use of one time slot in each frame; splitting the high-speed data signal into a plurality of lower-speed sub-signals corresponding in number to the number of allocated time slots; the transmitting including transmitting the lower-speed sub-signals over the radio path as respective separate bursts in each of the allocated time slots; upon reception of the separate bursts transmitted over the radio path, combining the lower-speed sub-signals, thereby restoring the high-speed data signal; measuring, at the mobile station in each time slot allocated to the mobile station, at least one characteristic of a received signal, the one characteristic selected from the group consisting of signal level and signal quality; and making a handover decision in regard to the mobile station on the basis of one of (a) a combination of measurement results of two or more time slots assigned to the mobile station, and (b) a measurement result of the poorest time slot in relation to the at least one characteristic. - View Dependent Claims (6, 7)
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8. A control arrangement of a mobile station in a mobile telecommunications system in which data is transmitted over a radio path between the mobile station and a base station of a fixed radio network as bursts in time slots of successive frames, the arrangement comprising:
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means for allocating the mobile station at least two time slots in each frame for transmitting a high-speed data signal having a data rate which is higher than that supported by use of one time slot in each frame; means for splitting the high-speed data signal into a plurality of lower-speed sub-signals corresponding in number to the number of allocated time slots; means for transmitting the lower-speed sub-signals over the radio path as respective separate bursts in each of allocated time slots; means for combining the lower-speed sub-signals, upon reception of the separate bursts transmitted over the radio path, and thereby restoring the high-speed data signal; the mobile station being arranged to measure at least one characteristic of a received signal, the characteristic selected from the group consisting of signal level and signal quality, in each time slot allocated to the mobile station; and the fixed radio network being arranged to at least one of (a) control the transmitting power of the mobile station and (b) make a handover decision on the basis of (b1) a combination of measurement results of two or more time slots assigned to the mobile station, and (b2) a measurement result of the poorest time slot in relation to the at least one characteristic. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification