Method and device for allocating control channel element
AssigneeZte Corporation
InventorYuanchun Tan
Life of this patent
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Abstract
A method and a device for allocating a Control Channel Element (CCE) are provided by the present invention. The method comprises: determining a CCE aggregation level, by a network, according to a mapping relationship between a Channel Quality Identity (CQI) and a Physical Downlink Control Channel (PDCCH) code rate; and allocating the CCE resource according to the CCE aggregation level by the network. By the method, the effect of improving the utilization rate of the CCE resource is achieved.
Claims8
A method for allocating a Control Channel Element (CCE), comprising:
- determining a CCE aggregation level, by a network, according to a mapping relationship between a Channel Quality Identity (CQI) and a Physical Downlink Control Channel (PDCCH) code rate;
- and
- allocating the CCE resource according to the CCE aggregation level by the network,
- wherein the step of determining the CCE aggregation level by the network according to the mapping relationship comprises:
- selecting a corresponding first PDCCH code rate for public Downlink Control Information (DCI), by the network, according to the mapping relationship and a minimum wideband CQI of all the activated User Equipments (UEs) in a cell at a current Transmission Time Interval (TTI);
- and
- selecting a corresponding first CCE aggregation level from a CCE aggregation level set {4, 8} for the public DCI at the current TTI, by the network, according to the corresponding first PDCCH code rate, wherein the first CCE aggregation level corresponds to the first PDCCH code rate.
A device for allocating a Control Channel Element (CCE), which is located in a network, comprising:
- a determining module, configured to determine a CCE aggregation level according to a mapping relationship between a CQI and a PDCCH code rate, and
- an allocating module, configured to allocate the CCE resource according to the CCE aggregation level,
- wherein the determining module comprises:
- a first selecting sub-module, configured to select a corresponding first PDCCH code rate for public DCI according to the mapping relationship and a minimum wideband CQI of all the activated UEs in a cell at a current TTI;
- and
- a second selecting sub-module, configured to select a corresponding first CCE aggregation level from a CCE aggregation level set {4, 8} for the public DCI at the current TTI according to the corresponding first PDCCH code rate, wherein the first CCE aggregation level corresponds to the first PDCCH code rate.
Dependencies are inferred from the claim text.