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Method and apparatus for transport format selection in wireless communication system
The present invention relates to a method, apparatus for selecting transport formats in a wireless transmitting device and wireless communication device associated therewith, wherein the wireless transmitting device supports transmission modes including single-stream transmission mode and multiple-stream transmission mode and comprises a transmit buffer to buffer data before transport format being selected for transmitting said data to a wireless receiving device, comprising: acquiring radio qualities associated with each stream being transmitted to the wireless receiving device; setting the transmission mode according to received radio qualities; detecting whether there is buffer limitation for said transmit buffer when multiple-stream transmission mode is set; and when buffer limitation is detected and multiple-stream transmission mode is selected for stream transmission, allocating the buffered data among the multiple streams based on the received radio qualities associated with respective streams and selecting transport formats for respective streams of the multiple streams based on their respective allocated buffered data quantities. This enables to obviate the TX power imbalance in case of multiple-stream transmissions, balance code and power usage among UEs in a cell, and thus improve code multiplexing efficiency.
Telefonaktiebolaget L M Ericsson (Publ)
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Jinhua Qingyu
Liu Miao