Method and apparatus for scheduling packet data transmissions in a wireless communication system
AssigneeQUALCOMM Incorporated
InventorsGang Bao, David Puig Oses
Life of this patent
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Abstract
A method for scheduling packet data transmissions in a wireless communication system wherein a per-user Priority Function (PF) is calculated based on the channel condition and throughput for each user. In one embodiment, the system supports retransmission of data packets and sub-packets, wherein the retransmission information is used to schedule data transmissions. In another embodiment, at each time interval the system updates the priority factor for the user having the highest priority factor in the previous time interval. The priority factors of the other users remain unchanged.
Claims11
In a wireless communication system adapted for packet data transmissions, the system having a plurality of mobile stations, a method comprising:
- determining an original priority factor for each of the plurality of mobile stations;
- scheduling transmissions to at least one of the plurality of mobile stations based on the original priority functions, wherein a first mobile station has a highest priority factor;
- transmitting to the first mobile station;
- determining an updated priority factor for the first mobile station;
- and
- scheduling transmissions to at least one of the plurality of mobile stations based on the updated priority factor for the first mobile station and the original priority functions of the other mobile stations.
In a wireless communication system adapted for packet data transmissions, an infrastructure element comprising:
- means for determining an original priority factor for each of the plurality of mobile stations;
- means for scheduling transmissions to at least one of the plurality of mobile stations based on the original priority functions, wherein a first mobile station has a highest priority factor;
- means for transmitting to the first mobile station;
- means for determining an updated priority factor for the first mobile station;
- and
- means for scheduling transmissions to at least one of the plurality of mobile stations based on the updated priority factor for the first mobile station and the original priority functions of the other mobile stations.
In a wireless communication system adapted for packet data transmissions and supporting automatic retransmission of data packets, the system having a plurality of mobile stations, a method comprising:
- receiving a rate request indicator from a first mobile station;
- transmitting a first data packet to the first mobile station, the first mobile station having a throughput value;
- updating the throughput value of the first mobile station using the rate request indicator;
- receiving a negative acknowledge signal from the first mobile station;
- and
- in response to the negative acknowledge signal retransmitting the first data packet.
In a wireless communication system adapted for packet data transmissions and supporting automatic retransmission of data packets, the system having a plurality of mobile stations, an infrastructure element comprising:
- means for receiving a rate request indicator from a first mobile station;
- means for transmitting a first data packet to first mobile station, the first mobile station having a throughput value;
- means for updating the throughput value of the first mobile station using the rate request indicator;
- means for receiving a negative acknowledge signal from the first mobile station;
- and
- means for retransmitting the first data packet in response to the negative acknowledge signal.
In a wireless communication system adapted for packet data transmissions and supporting automatic retransmission of data packets, the system having a plurality of mobile stations, an infrastructure element storing a plurality of computer-readable instructions for performing:
- receiving a rate request indicator from a first mobile station;
- transmitting a first data packet to first mobile station, the first mobile station having a throughput value;
- updating the throughput value of the first mobile station using the rate request indicator;
- receiving a negative acknowledge signal from the first mobile station;
- and
- retransmitting the first data packet in response to the negative acknowledge signal.
Dependencies are inferred from the claim text.