Adjustment of link adaptation parameter based on data and control channel load
First Claim
1. A method for optimizing link adaptation in association with scheduling a data channel for a cell in a base station of a cellular communication system, the method comprising:
- determining that the cell is in one of;
a Data Channel Limited (DCL) state due to users having not received their requested resources as a consequence of insufficient data channel resources;
a Control Channel Limited (CCL) state due to the cell not being in a DCL state and users having not received their requested resources as a consequence of insufficient control channel resources;
a Non Limited (NL) state due to the cell not being in the DCL state and not being in the CCL state;
updating a link adaptation parameter based on;
a load of the data channel; and
a load of a control channel;
wherein the control channel is distinct from the data channel and is purposed for assigning resources to the data channel.
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Abstract
A method for performing link adaptation in association with scheduling a data channel for a cell in a base station of a cellular communication system, and an arrangement, suitable for performing such a method. The link adaptation method has link adaptation optimization purpose which is achieved by updating a link adaptation parameter on the basis of the load on the data channel and on the basis of the load of a control channel controlling the data channel in the cell. The method obtains a better trade-off between the spectral efficiency and the delay, due to re-transmissions.
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Citations
20 Claims
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1. A method for optimizing link adaptation in association with scheduling a data channel for a cell in a base station of a cellular communication system, the method comprising:
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determining that the cell is in one of; a Data Channel Limited (DCL) state due to users having not received their requested resources as a consequence of insufficient data channel resources; a Control Channel Limited (CCL) state due to the cell not being in a DCL state and users having not received their requested resources as a consequence of insufficient control channel resources; a Non Limited (NL) state due to the cell not being in the DCL state and not being in the CCL state; updating a link adaptation parameter based on; a load of the data channel; and a load of a control channel; wherein the control channel is distinct from the data channel and is purposed for assigning resources to the data channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A base station of a cellular communication system for optimizing link adaptation in association with scheduling a data channel for a cell of the base station, the base station comprising:
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a processor and a memory, the memory containing instructions executable by the processor whereby the base station is configured to; perform the scheduling; determine that the cell is in one of; a Data Channel Limited (DCL) state due to users having not received their requested resources as a consequence of insufficient data channel resources; a Control Channel Limited (CCL) state due to the cell not being in a DCL state and users having not received their requested resources as a consequence of insufficient control channel resources; a Non Limited (NL) state due to the cell not being in the DCL state and not being in the CCL state; update a link adaptation parameter based on; a load on the data channel; and a load of a control channel; wherein the control channel is distinct from the data channel and is purposed for assigning resources to the data channel. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification