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    • 2. 发明授权
    • Radio communication system, frequency allocation method and frequency allocation device
    • 无线电通信系统,频率分配方法和频率分配设备
    • US06658257B1
    • 2003-12-02
    • US09446295
    • 1999-12-17
    • Tomoaki HirayamaTadao TakamiKiyohito Nagata
    • Tomoaki HirayamaTadao TakamiKiyohito Nagata
    • H04Q720
    • H04W16/14H04W28/22H04W72/0453H04W72/082Y02D70/00
    • Among cellular radio communication systems, there are those in which a plurality of businesses, e.g. businesses A, B and C share a designated frequency band, and each business provides radio communication services using respectively allotted frequency bands. In this type of radio communication system, there are cases in which mobile stations belonging to different businesses use channels which have adjacent frequencies, in which case adjacent channel interference of a large interference level is produced. Therefore, in this radio communication system, of the frequency bands allotted to each business, the adjacent frequency bands which are adjacent to frequency bands allotted to other businesses are allotted to low power communications, while non-adjacent frequency bands which are not adjacent to frequency bands allotted to other businesses are allotted to high power communications.
    • 在蜂窝无线电通信系统中,存在多个业务,例如, 企业A,B和C共享指定的频段,每个业务使用分配的频带提供无线电通信业务。 在这种类型的无线电通信系统中,存在属于不同业务的移动台使用具有相邻频率的信道的情况,在这种情况下产生了大干扰电平的相邻信道干扰。 因此,在该无线通信系统中,分配给每个业务的频带中,与分配给其他业务的频带相邻的相邻频带被分配给低功率通信,而不与频率相邻的非相邻频带 分配给其他业务的乐队被分配到高功率通信。
    • 7. 发明授权
    • Rubber composition for side wall
    • 侧壁橡胶组合物
    • US07458406B2
    • 2008-12-02
    • US11502483
    • 2006-08-11
    • Takao WadaMamoru UchidaTomoaki Hirayama
    • Takao WadaMamoru UchidaTomoaki Hirayama
    • B60C1/00
    • C08L9/06B60C1/0025C08C19/06C08K3/36C08K5/5419C08L7/00C08L9/00C08L15/00C08L21/00C08L2666/08
    • There is provided a rubber composition for a side wall, wherein an amount ratio of resources other than petroleum are increased so as to be ecological and take measures for the decrease in supply of petroleum in the future, which further has excellent flex crack resistance and strength.A rubber composition for a side wall comprising 20 to 60 parts by weight of silica based on 100 parts by weight of a rubber component comprising 40 to 80% by weight of a natural rubber and 60 to 20% by weight of at least one rubber selected from the group consisting of a butadiene rubber, a styrene-butadiene rubber and an epoxidized natural rubber, and 4 to 16 parts by weight of a silane compound represented by the following formula: Xn—Si—Y4-n (wherein X represents an ethoxy group or a methoxy group, and Y represents a phenyl group or an alkyl group) based on 100 parts by weight of silica.
    • 提供了一种用于侧壁的橡胶组合物,其中石油以外的资源的量比例增加,从而是生态的,并且将来采取降低石油供应的措施,其进一步具有优异的抗开裂性和强度 。 一种用于侧壁的橡胶组合物,其包含基于100重量份的包含40至80重量%的天然橡胶和60至20重量%的至少一种橡胶的橡胶组分20至60重量份的二氧化硅 来自由丁二烯橡胶,苯乙烯 - 丁二烯橡胶和环氧化天然橡胶组成的组,以及4〜16重量份由下式表示的硅烷化合物:&lt;线内配方说明=“在线 公式“end =”lead“→Xn-Si-Y4-n <?in-line-formula description =”In-line Formulas“end =”tail“?>(其中X表示乙氧基或甲氧基, 和Y表示苯基或烷基),基于100重量份的二氧化硅。