[计] upward multiplexing, upward-multiplexing

xiàng shàng duō lù zhuǎn jiē ㄒㄧㄤˋ ㄕㄤˋ ㄉㄨㄛ ㄌㄨˋ ㄓㄨㄢˇ ㄐㄧㄝ