Abstract: Provided is a radio communication device capable of reducing interference, caused by non-SR transmission, with a basic service set (BSS) performing spatial reuse (SR) transmission. An SR transmission resource control unit (107) of the radio communication device (SR initiator) (100) determines transmission resources for an SR signal to be transmitted by means of SR to a second BSS other than a first BSS to which the radio communication device (100) belongs on the basis of radio quality information transmitted from other radio communication devices (SR responders) in the first BSS. A radio transmission/reception unit (101) transmits the SR signal by using the determined transmission resources.

Abstract: Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit (201) which generates an SRS (Sounding Reference Signal) for measuring uplink line data channel quality; an SRS arrangement unit (202) which frequency-multiplexes the SRS on the SR transmission band and arranges it; and an SRS arrangement control unit (208) which controls SRS frequency multiplex so as to be uniform in frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of the reference signal transmission bandwidth according to the SRS arrangement information transmitted from the base station and furthermore controls the transmission interval of the frequency-multiplexed SRS.

Abstract: The laying of a vegetation mat in close contact with a clad surface is achieved. The vegetation mat has a net, which prevents freezing or flow-away of vegetation material without the need for stretching a separate net. The mat comprises a layer of vegetation material selected from the group consisting of soil improvement material, fertilizer, organic material, vegetation seeds and combinations thereof, a front and back sheet, which are capable of being at least partly decomposed and are coupled together to wrap the vegetation material. A net having a mesh size permitting the budding and growth of the vegetation seeds, is provided on the front surface of the front sheet.

Abstract: A net for grassing obtained by knitting and weaving wefts having an appointed width in a texture less than said width by means of a large number of warps and having mountain portions and valley portions randomly formed on a right side and a reverse side thereof.Earth and sand and sprayed materials can be prevented from being washed away in the first stage of the protective construction for a face of slope.