Apparatus and method for scheduling in wireless communication system using sliding window superposition coding scheme
AssigneesSamsung Electronics Co., Ltd., The Regents of the University of California
InventorsSeokki Ahn, Kwangtaik Kim, Young-Han Kim
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Abstract
The present disclosure relates to a method and apparatus for transmitting and receiving data in a wireless communication system. In particular, the present disclosure relates to a scheduling method and apparatus for transmitting and receiving data in a wireless communication system using a sliding window superposition coding scheme. In the present disclosure, in a wireless communication system, if a UE is located in a cell edge, data throughput can be improved. An eNB using an SWSC scheme can provide fast scheduling. An eNB can provide higher throughput.
Claims14
A scheduling method for data transmission and reception in a centralized device of a wireless communication system using a sliding window superposition coding (SWSC) scheme, the scheduling method comprising:
- receiving, from a plurality of cells, interference information of user equipments (UEs) included in the plurality of cells;
- selecting one UE for each of the plurality of cells, each selected UE having one of a greatest sum of proportional fairness (sum PF) or a greatest sum of transfer rates in its respective cell;
- generating a dominant interference graph using dominant interference cell information using the selected UEs;
- identifying whether at least one connected cycle component group is present in the generated dominant interference graph;
- selecting one connected cycle component group in response to at least one connected cycle component group being present and selecting a specific component cell from the selected connected cycle component group;
- setting a transfer rate of a component cell providing dominant interference to the selected specific component cell to be a specific transfer rate based on a transfer rate graph of the SWSC scheme;
- determining a transfer rate of the selected specific component cell based on the specific transfer rate;
- determining a transfer rate of a cell belonging to the selected connected cycle component group and having a non-determined transfer rate based on the transfer rate of the selected specific component cell;
- correcting the transfer rate of the component cell providing dominant interference to the selected specific component cell based on the determined transfer rate of the cell belonging to the selected connected cycle component group;
- determining transfer rates of a plurality of cells neighboring the selected connected cycle component group;
- and
- providing each of the plurality of cells with information about its respective transfer rate determined for that cell.
A centralized device for scheduling a transfer rate to be transmitted from a plurality of cells using a sliding window superposition coding (SWSC) scheme to a user equipment (UE) located in each cell, the centralized device comprising:
- an interface configured to receive, from the plurality of cells, interference information of UEs included in the plurality of cells and to provide scheduling information to each of the plurality of cells;
- memory configured to store a previous transfer rate provided to each of the plurality of cells and the interference information of the UEs received from the plurality of cells;
- and
- a processor configured to:
- receive, from the plurality of cells, interference information of UEs included in the plurality of cells,
- select one UE for each of the plurality of cells, each selected UE having one of a greatest sum of proportional fairness (sum PF) or a greatest sum of transfer rates in its respective cell,
- generate a dominant interference graph using dominant interference cell information using the selected UEs,
- identify whether at least one connected cycle component group is present in the generated dominant interference graph,
- select one connected cycle component group in response to at least one connected cycle component group being present and select a specific component cell from the selected connected cycle component group,
- set a transfer rate of a component cell providing dominant interference to the selected specific component cell to be a specific transfer rate based on a transfer rate graph of the SWSC scheme,
- determine a transfer rate of the selected specific component cell based on the specific transfer rate,
- determine a transfer rate of a cell belonging to the selected connected cycle component group and having a non-determined transfer rate based on the transfer rate of the selected specific component cell,
- correct the transfer rate of the component cell providing dominant interference to the selected specific component cell based on the determined transfer rate of the cell belonging to the selected connected cycle component group,
- determine transfer rates of a plurality of cells neighboring the selected connected cycle component group, and
- provide each of the plurality of cells with information about its respective transfer rate determined for that cell.
Dependencies are inferred from the claim text.