Virtually Centralized Uplink Scheduling
First Claim
1. A mobile system for scheduling uplink data transmission from a plurality of mobile stations to a base station, the mobile system comprising:
- the base station comprises a transmitting apparatus transmits a respective indicator, which is used for deciding on a transmission data rate of uplink by adjusting modulation and coding scheme and controlling rate, to each of said plurality of mobile stations, andthe mobile station comprise a transmitting apparatus transmits respective data amount information and data to the base station, wherein an amount of said data is decided by adjusting modulation and coding scheme and controlling rate, based on the respective indicator which is transmitted to said mobile station.
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Abstract
A method of scheduling uplink transmissions from a plurality of source user equipments to a base station is disclosed. The method comprises the steps of determining the amount of data in the data buffer of each of the user equipments, comparing the amount of data in the data buffers of the user equipments to obtain, for each user equipment, a relative indicator, the relative indicator indicating how full that user equipment'"'"'s data buffer is in comparison to the data buffers of the other user equipments, and scheduling uplink transmissions in dependence on the relative indicators. In this way, each user equipment is given some knowledge of the state of the buffer in the other user equipments. The user equipments are therefore able to make more efficient scheduling decisions. This can improve the throughput and give lower packet delivery delays.
42 Citations
3 Claims
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1. A mobile system for scheduling uplink data transmission from a plurality of mobile stations to a base station, the mobile system comprising:
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the base station comprises a transmitting apparatus transmits a respective indicator, which is used for deciding on a transmission data rate of uplink by adjusting modulation and coding scheme and controlling rate, to each of said plurality of mobile stations, and the mobile station comprise a transmitting apparatus transmits respective data amount information and data to the base station, wherein an amount of said data is decided by adjusting modulation and coding scheme and controlling rate, based on the respective indicator which is transmitted to said mobile station.
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2. A base station used in a mobile communication system in which uplink data transmission is conducted from a plurality of mobile stations to said base station, said base station comprising:
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a receiving apparatus receives respective information relating to a data amount from a plurality of mobile stations and transmits a respective indicator, which is used for deciding on a transmission data rate of uplink by adjusting modulation and coding scheme and controlling rate, to each of said plurality of mobile stations.
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3. A method for scheduling uplink data transmission from a plurality of mobile stations to a base station, said method comprising:
outputting respective data amount information from said plurality of mobile stations to said base station; outputting a respective indicator, which is used for deciding on a transmission data rate of uplink by adjusting modulation and coding scheme and controlling rate, to each of said plurality of mobile stations from said base station; and outputting data from at least one of said plurality of mobile stations, wherein an amount of said data is decided by adjusting modulation and coding scheme and controlling rate based on the respective indicator which is transmitted to said mobile station.
Specification