Adaptive scheduling data transmission based on the transmission power and the number of physical resource blocks

摘要

A method of scheduling data transmission of transport blocks in an Orthogonal Frequency-Division Multiple Access communication system, wherein each of the transport blocks is transmitted with a respective transmission format and transmission power in a set of physical resource blocks in the frequency domain. The method identifies the relationship between transmission power and the block error rate for a set of transmission formats, and evaluates alternative transmission formats and different numbers of physical resource blocks for at least one of the transport blocks. The method determines a set of alternative transmission formats with different numbers of physical resource blocks, and determines a value indicating the total power difference required to transmit the transport block, while maintaining a target block error rate. The transport block is then transmitted with the alternative transmission format and different number of physical resource blocks if the value indicates that the total transmission power is less.

主权项

1. A method of scheduling data transmission of transport blocks in an Orthogonal Frequency-Division Multiple Access communication system, wherein each of said transport blocks is transmitted with a respective transmission format and transmission power in a set of physical resource blocks in a frequency domain, wherein the method comprises:
identifying, by a base station, a relationship between transmission power and block error rate for a set of transmission formats, and evaluating, by the base station, alternative transmission formats and different numbers of physical resource blocks for at least one of said transport blocks by performing the steps of:
a) determining for said transport block a set of alternative transmission formats with a different number of physical resource blocks,b) if said set of alternative transmission formats with the different number of physical resource blocks is not empty, determining as a function of said relationship for at least one of said alternative transmission formats and different numbers of physical resource blocks a value indicating a total power difference required to transmit said transport block with said alternative transmission format and said different number of physical resource blocks, while ensuring a target block error rate, andc) if said value indicates that a total transmission power is less, scheduling for transmission said transport block with said alternative transmission format and said different number of physical resource blocks.