Method and apparatus for scheduling downlink transmission
The present invention relates to method and apparatus for scheduling downlink transmission. According to an embodiment of the present invention, a method for scheduling downlink transmission in a wireless communication system is provided. The method comprises: scheduling, in a channel measurement sub-frame, user equipments in a cell according to feedback information that was most recently received from the user equipments, wherein in the channel measurement sub-frame, the user equipments calculate feedback information to be reported; and scheduling, in response to receipt of the feedback information, the user equipments based on a result of scheduling corresponding to the channel measurement sub-frame. According to an embodiment of the present invention, there is also provided a scheduling apparatus, base station device and corresponding computer program product.
1. A method for scheduling downlink transmission in a wireless communication system, comprising:
a) scheduling, by a hardware processor, in a channel measurement sub-frame, user equipments in a cell according to feedback information that was most recently received from said user equipments, wherein in said channel measurement sub-frame, the user equipments calculate feedback information to be reported; and
b) scheduling, by the hardware processor, in response to receipt of said feedback information, said user equipments based on a result of scheduling corresponding to said channel measurement sub-frame.
2. The method according to claim 1 , further comprising:
storing said result of scheduling corresponding to said channel measurement sub-frame after the step a).
3. The method according to claim 2 , wherein step b) further comprises:
fetching the stored result of scheduling;
updating a sub-carrier allocation table according to the fetched result of scheduling, wherein said sub-carrier allocation table represents a result of scheduling corresponding to non-channel-measurement sub-frames.
4. The method according to claim 3 , further comprising:
scheduling, in said non-channel-measurement sub-frames, said user equipments based on the result of scheduling represented in said sub-carrier allocation table.
5. The method according to claim 1 , wherein:
a result of scheduling is a mapping table between the radio resource and identification of at least one of said user equipments.
6. The method according to claim 1 , wherein:
said wireless communication system implements the Third Generation Partnership standard for Long Term Evolution.
7. The method according to claim 6 , wherein:
said channel measurement sub-frame and said non-channel-measurement sub-frames conform with a structure of Long Term Evolution (LTE) Frequency Division Duplexing downlink frame.
8. A scheduling apparatus for scheduling downlink transmission in a wireless communication system, comprising:
means for scheduling, in a channel measurement sub-frame, user equipments in a cell according to feedback information that was most recently received from said user equipments, wherein in said channel measurement sub-frame, the user equipments calculate feedback information to be reported; and
means for scheduling, in response to receipt of said feedback information, said user equipments based on a result of scheduling corresponding to said channel measurement sub-frame.
9. The scheduling apparatus according to claim 8 , further comprising:
means for causing said result of scheduling corresponding to said channel measurement sub-frame to be stored.
10. The scheduling apparatus according to claim 9 , wherein means for scheduling in response to receipt of said feedback information further comprises:
means for fetching the stored result of scheduling;
means for updating a sub-carrier allocation table according to the fetched result of scheduling, wherein said sub-carrier allocation table represents a result of scheduling corresponding to non-channel-measurement sub-frames.
11. The scheduling apparatus according to claim 10 , further comprising:
means for scheduling, in said non-channel-measurement sub-frames, said user equipments based on the result of scheduling represented in said sub-carrier allocation table.
12. The scheduling apparatus according to claim 8 , wherein:
a result of scheduling is a mapping table between the radio resource and identification of at least one of said user equipments.
13. The scheduling apparatus according to claim 8 , wherein:
said wireless communication system implements the Third Generation Partnership standard for Long Term Evolution.
14. The scheduling apparatus according to claim 13 , wherein:
said channel measurement sub-frame and said non-channel-measurement sub-frames conform with a structure of Long Term Evolution (LTE) Frequency Division Duplexing downlink frame.
15. A base station device comprising:
a scheduling apparatus for scheduling downlink transmission in a wireless communication system,
the scheduling apparatus comprising:
means for scheduling, in a channel measurement sub-frame, user equipments in a cell according to feedback information that was most recently received from said user equipments, wherein in said channel measurement sub-frame, the user equipments calculate feedback information to be reported; and
means for scheduling, in response to receipt of said feedback information, said user equipments based on a result of scheduling corresponding to said channel measurement sub-frame.
16. The base station device according to claim 15 , further comprising:
allocation storage means for storing said result of scheduling corresponding to said channel measurement sub-frame.