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    • 5. 发明申请
    • APPARATUS AND METHOD FOR EFFICIENTLY OPERATING FAST FEEDBACK CHANNEL IN WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统中快速反馈信道高效运行的装置及方法
    • US20110158192A1
    • 2011-06-30
    • US12978986
    • 2010-12-27
    • Sang-Heon KIMDavid MAZZARESEHee-Won KANG
    • Sang-Heon KIMDavid MAZZARESEHee-Won KANG
    • H04W72/04
    • H04L5/0053H04L5/0023H04L5/0096
    • An apparatus and method for efficiently operating a fast feedback channel in a wireless communication system are provided. A method for operating a feedback channel in a Base Station (BS) of a wireless communication system includes identifying feedback information types of one or more feedback channels intended to be deallocated among a plurality of existing allocated feedback channels for a Mobile Station (MS), activating a bit corresponding to the identified feedback information type in a ‘deallocation bitmap’ field within a DownLink (DL) control signal, and transmitting the DL control signal to the MS. Among the feedback information types of the plurality of existing allocated feedback channels, the feedback information type having the smallest value corresponds to the highest priority bit among bits within the ‘deallocation bitmap’ field.
    • 提供了一种用于在无线通信系统中有效地操作快速反馈信道的装置和方法。 一种用于在无线通信系统的基站(BS)中操作反馈信道的方法包括识别用于移动台(MS)的多个现有分配的反馈信道中旨在被释放的一个或多个反馈信道的反馈信息类型, 在DownLink(DL)控制信号中的“解除分配位图”字段中激活与所识别的反馈信息类型相对应的位,并将DL控制信号发送到MS。 在多个现有分配的反馈信道的反馈信息类型中,具有最小值的反馈信息类型对应于“取消分配位图”字段内的比特中的最高优先级位。
    • 6. 发明申请
    • METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING REFERENCE SIGNAL FOR POSITIONING IN WIRELESS COMMUNICATION SYSTEM
    • 用于发送/接收无线通信系统中定位的参考信号的方法和装置
    • US20110103307A1
    • 2011-05-05
    • US12912044
    • 2010-10-26
    • Sang-Heon KIMJae-Weon CHOHee-Won KANGJin-Hee WON
    • Sang-Heon KIMJae-Weon CHOHee-Won KANGJin-Hee WON
    • H04W4/00
    • H04L5/0048G01S1/042G01S5/0226H04L1/1812H04W4/02H04W64/00
    • A method and apparatus for transmitting/receiving a reference signal for positioning in a wireless communication system are provided. In the method, a BS locates a PA preamble in a second frame among frames constituting each of multiple superframes, locates a SA preamble in first symbols of first and third frames among the frames constituting each of the multiple superframes, determines multiple consecutive first superframes belonging to an LBS zone from among the multiple superframes, includes a reference signal for LBS in a first symbol of a first subframe of a last frame among frames constituting each of the first superframes, includes data in a first symbol of a first subframe of a last frame among frames constituting each of second superframes that correspond to the multiple superframes excluding the first superframes when the data is to be transmitted, and communicates with an MS by using the first and second superframes.
    • 提供了一种用于在无线通信系统中发送/接收用于定位的参考信号的方法和装置。 在该方法中,BS在构成多个超帧中的每一帧的帧之间的第二帧中定位PA前导码,在构成多个超帧中的每一个的帧中的第一和第三帧的第一符号中定位SA前导码,确定属于多个超帧的多个连续的第一超帧 包括在构成每个第一超帧的帧中的最后帧的第一子帧的第一符号中的LBS的参考信号,包括最后一帧的第一子帧的第一符号中的数据 构成与除了第一超帧之外的多个超帧对应的第二超帧的帧中的帧,并且通过使用第一和第二超帧与MS通信。
    • 8. 发明申请
    • METHOD FOR THE PREPARATION OF TUBE-TYPE POROUS BIODEGRADABLE SCAFFOLD HAVING DOUBLE-LAYERED STRUCTURE FOR VASCULAR GRAFT
    • 用于制备具有双层结构的管状多孔生物可降解SCAFFO的方法
    • US20090012607A1
    • 2009-01-08
    • US11952759
    • 2007-12-07
    • Sang-Heon KIMSoo Hyun KIMEunna CHUNG
    • Sang-Heon KIMSoo Hyun KIMEunna CHUNG
    • A61F2/82B29C70/32
    • B29C70/32A61F2/06A61F2210/0004D01D5/0007D01D5/04
    • Disclosed herein are a tube-type porous scaffold having a double-layered structure for use as an artificial vascular graft and a preparation method thereof. The method comprises (1) dissolving a biodegradable polymer in an organic solvent and mixing the polymer with a porogen so as to provide a polymer/porogen mixture; (2) coating a cylindrical shaft with the polymer/porogen mixture so as to form an inner porous coating layer; (3) preparing a biodegradable polymer gel by dissolving a biodegradable polymer in an organic solvent; (4) spinning down the biodegradable polymer gel in a non-solvent coagulation bath in which the cylindrical shaft having the inner porous coating layer, obtained at step (2), is immersed and rotated to form gel-phase fibers and allowing the gel-phase fibers to wind around the inner porous coating layer of the rotating shaft so as to form an outer polymer fibrous layer; and (5) separating the double-layered porous scaffold, formed on the shaft, from the shaft and removing the organic solvent and the porogen from the scaffold. Since the porous scaffold has a double-layered structure consisting of an inner porous coating layer containing micropores and a gel-phase outer polymer fibrous layer, it has high pore interconnectivity and mechanical strength, which effectively prevents the leakage of blood, and has high cell seeding and proliferation efficiencies, thereby being useful as a tissue-engineered artificial vascular graft.
    • 本文公开了具有用作人造血管移植物的双层结构的管型多孔支架及其制备方法。 该方法包括(1)将可生物降解的聚合物溶解在有机溶剂中并将该聚合物与致孔剂混合以提供聚合物/致孔剂混合物; (2)用聚合物/致孔剂混合物涂覆圆柱形轴以形成内部多孔涂层; (3)通过将可生物降解的聚合物溶解在有机溶剂中制备可生物降解的聚合物凝胶; (4)在非溶剂凝固浴中将可生物降解的聚合物凝胶纺丝,其中将具有内部多孔涂层的圆柱形轴在步骤(2)中浸渍并旋转以形成凝胶相纤维, 缠绕在旋转轴的内部多孔涂层周围,以形成外部聚合物纤维层; 和(5)将形成在轴上的双层多孔支架从轴上分离并从支架中除去有机溶剂和致孔剂。 由于多孔支架具有由含有微孔的内多孔涂层和凝胶相外聚合物纤维层组成的双层结构,因此具有高孔互连性和机械强度,有效防止血液渗漏,并具有高细胞 播种和增殖效率,从而可用作组织工程人造血管移植物。