COMMUNICATION APPARATUS AND COMMUNICATION METHOD

    公开(公告)号:US20240292427A1

    公开(公告)日:2024-08-29

    申请号:US18659475

    申请日:2024-05-09

    申请人: Sun Patent Trust

    摘要: Provided are a radio terminal device, a radio base station device, and a channel signal forming method which can prevent quality degradation of the downlink resource allocation information by reducing the frequency of the zero information addition process to the downlink resource allocation information when executing communication using an uplink unit band and multiple downlink unit bands correlated to the uplink unit band. A base station includes: a PDCCH generation unit which includes the uplink allocation information relating to the uplink unit band only in some of the channel signals formed for each of the downlink unit bands; and a padding unit which adds zero information to the downlink allocation information only in the selected some channel signals having the bandwidth of the corresponding downlink unit band smaller than that of the uplink unit band until the downlink allocation information size becomes equal to the uplink allocation information size.

    COMMUNICATION APPARATUS AND REFERENCE SIGNAL RECEPTION METHOD

    公开(公告)号:US20240259156A1

    公开(公告)日:2024-08-01

    申请号:US18630875

    申请日:2024-04-09

    申请人: Sun Patent Trust

    摘要: Disclosed are a wireless transmitter and a reference signal transmission method that improve channel estimation accuracy. In a terminal, which transmits a reference signal using n (n is a non-negative integer 2 or greater) band blocks (which correspond to clusters here), which are disposed with spaces therebetween in a frequency direction, a reference signal controller switches the reference signal formation method of a reference signal generator between a first formation method and a second formation method based on the number (n) of band blocks. In addition, a threshold value setting unit adjusts a switching threshold value based on the frequency spacing between band blocks. Thus, the reference signal formation method can be selected with good accuracy and, as a result, channel estimation accuracy is further improved.