Coordinated scheduling for time division duplex network
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsHuaisong Zhu, Jiansong Gan, Xinyu Gu
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Abstract
The invention relates to Coordinated Scheduling for a Time Division Duplex (TDD) network. In a method for User Equipment (UE) scheduling by a base station in a TDD network, the base station receives scheduling decision from at least one neighboring cell of the base station, and schedules a UE among a plurality of UEs in the serving cell of the base station based on the scheduling decision from the at least one neighboring cell and based on smart antenna information. The inter-cell interference is suppressed and therefore the network performance is improved.
Claims16
A method for User Equipment (UE) scheduling by a base station in a Time Division Duplex (TDD) network comprising:
- receiving a scheduling decision for a time slot from at least one neighboring cell of the base station;
- and
- scheduling a UE among a plurality of UEs for the time slot in a serving cell of the base station based on the scheduling decision received from the at least one neighboring cell and based on smart antenna information, wherein the smart antenna information includes at least one of:
- Serving and Neighboring cell Path Loss ratio (SNPL) of the plurality of UEs in the serving cell;
- and
- Angle of Arrival (AOA) of the plurality of UEs in the serving cell and at least one UE to be scheduled in the at least one neighboring cell by the scheduling decision, wherein the AOA of the at least one UE in the at least one neighboring cell to be scheduled by the scheduling decision is obtained by:
- receiving Reference Symbol (RS) sequences of the at least one UE, in the at least one neighboring cell to be scheduled by the scheduling decision via cell coordination or base band pool;
- and
- estimating the AOA of the at least one UE in the at least one neighboring cell to be scheduled by the scheduling decision with its respective RS sequences, and wherein the AOA of the plurality of UEs in the serving cell is obtained by estimating the AOA of the plurality of UEs in the serving cell with their respective RS sequences.
A base station in a Time Division Duplex (TDD) network, comprising:
- a transceiver adapted to receive a scheduling decision for a time slot from at least one neighboring cell of the base station;
- and
- a processing unit adapted to schedule a UE among a plurality of UEs for the time slot in a serving cell of the base station based on the scheduling decision received from the at least one neighboring cell and based on smart antenna information, wherein the smart antenna information includes at least one of:
- Serving and Neighboring cell Path Loss ratio (SNPL) of the plurality of UEs in the serving cell;
- and
- Angle of Arrival (AOA) of the plurality of UEs in the serving cell and at least one UE to be scheduled in the at least one neighboring cell by the scheduling decision, wherein the transceiver is adapted to receive Reference Symbol (RS) sequences of the at least one UE to be scheduled in the at least one neighboring cell by the scheduling decision via cell coordination or base band pool, and wherein the processing unit is adapted to estimate the AOA of the at least one UE to be scheduled in the at least one neighboring cell by the scheduling decision with its respective RS sequences and estimate the AOA of the plurality of UEs in the serving cell with their respective RS sequences.
A Time Division Duplex (TDD) network comprising a base station, the base station comprising:
- a transceiver adapted to receive a scheduling decision for a time slot from at least one neighboring cell of the base station;
- and
- a processing unit adapted to schedule a UE among a plurality of UEs for the time slot in a serving cell of the base station based on the scheduling decision received from the at least one neighboring cell and based on smart antenna information, wherein the smart antenna information includes at least one of:
- Serving and Neighboring cell Path Loss ratio (SNPL) of the plurality of UEs in the serving cell;
- and
- Angle of Arrival (AOA) of the plurality of UEs in the serving cell and at least one UE to be scheduled in the at least one neighboring cell by the scheduling decision, wherein the transceiver is adapted to receive Reference Symbol (RS) sequences of the at least one UE to be scheduled in the at least one neighboring cell by the scheduling decision via cell coordination or base band pool, and wherein the processing unit is adapted to estimate the AOA of the at least one UE to be scheduled in the at least one neighbouring cell by the scheduling decision with its respective RS sequences and estimate the AOA of the plurality of UEs in the serving cell with their respective RS sequences.
Dependencies are inferred from the claim text.