Method and system of link control
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorFrank Brouwer
Life of this patent
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Abstract
The present invention relates to retransmissions in a communications system and more especially it relates to link load control in a cellular mobile radio system particularly in a Universal Mobile Telecommunications System, UMTS. BLER targets are set depending on load.
Claims23
A method of link load control in a communications system using automatic repeat request, the method characterized in that transmission power is controlled including determining at least two targets, the first target being related to a target received signal strength, interference level or noise level, and the second target being related to a block error rate, and in that one or more signals carrying information on a set of second targets are transmitted to the user equipment from a radio access network.
A method of link load control in a communications system using automatic repeat request, the method characterized in that transmission power is controlled including determining at least two targets, the first target being related to a target received signal strength, interference level or noise level, and the second target being related to a block error rate, and in that one or more signals carrying selector information for selection of a second target from a set of second targets are transmitted to the user equipment from a radio access network.
A method of link load control in a communications system using automatic repeat request, the method characterized in that transmission power is controlled including determining at least two targets, the first target being related to a target received signal strength, interference level or noise level, and the second target being related to a block error rate, and in that one or more signals carrying a selected second target from a set of second targets are transmitted to the user equipment from a radio access network.
A method of link load control in a communications system using automatic repeat request, the method characterized:
- in that transmission power is controlled including determining at least two targets, the first target being related to a target received signal strength, interference level or noise level, and the second target being related to a block error rate;
- in that for downlink load control a user equipment determines the first target depending on the difference between the selected second target and an actual value, corresponding to the second target, estimated from downlink data transmission;
- and
- in that one or more signals are broadcast.
A first network element in a communication system using automatic repeat request, the first network element comprising:
- means for link load control including means for determining at least two targets, the first target being related to a target received signal strength and the second target being related to a block error rate;
- means for uplink load monitor of offered traffic load;
- means for reception of first measurement data;
- means for comparing offered traffic load and first measurement data;
- means for delivering a second target selector signal depending on the outcome of the comparison of the offered traffic load and the first measurement data;
- and
- means for determining the first target depending on the relation between the second target and the second measurement data.
Dependencies are inferred from the claim text.