公开(公告)号：US08421599B2

公开(公告)日：2013-04-16

申请号：US12516159

申请日：2007-06-15

申请人： Seung-Kwon Cho ,  Su-Chang Chae ,  Young-Il Kim

发明人： Seung-Kwon Cho ,  Su-Chang Chae ,  Young-Il Kim

IPC分类号： H04Q5/22 ,  G06F15/173

CPC分类号： G06F17/30879

摘要： The present invention relates to a URL providing apparatus and a method thereof, and a mobile station that accesses the Internet by using the provided URL, and an Internet access method thereof. The mobile station attaches an RF-ID tag that stores an RF-ID tag value corresponding to identification information of the mobile station thereto, and thus when a user brings the mobile station into an interrogation range of an RF-ID reader included in the URL providing apparatus, the URL providing apparatus receives the corresponding RF-ID tag value from the RF-ID reader. When the URL providing apparatus acquires an IP address of the mobile station by using the received RF-ID tag value and provides a URL to the mobile station by using the acquired IP address, the mobile station automatically accesses the Internet by using the URL. Such an Internet access method can minimize additional cost of the mobile station and simplify an Internet access process to a specific URL.

摘要翻译： 本发明涉及一种URL提供装置及其方法，以及通过使用提供的URL访问因特网的移动台及其互联网访问方法。 移动台附加存储与移动站的识别信息相对应的RF-ID标签值的RF-ID标签，因此当用户将移动站带入包含在URL中的RF-ID读取器的询问范围 提供装置，URL提供装置从RF-ID读取器接收对应的RF-ID标签值。 当URL提供装置通过使用接收的RF-ID标签值获取移动站的IP地址并通过使用所获取的IP地址向移动站提供URL时，移动站通过使用URL自动访问因特网。 这样的因特网接入方法可以使移动站的附加成本最小化，并简化对特定URL的因特网访问过程。

公开(公告)号：US08074138B2

公开(公告)日：2011-12-06

申请号：US11722041

申请日：2005-11-28

申请人： Su-Chang Chae ,  Youn-Ok Park ,  Jun-Woo Kim

发明人： Su-Chang Chae ,  Youn-Ok Park ,  Jun-Woo Kim

IPC分类号： H04L1/18 ,  G08C25/02

CPC分类号： H04L1/1845 ,  H04L1/0071 ,  H04L1/1812 ,  H04L1/1819 ,  H04L1/1867

摘要： In a decoding apparatus in a portable Internet terminal, a channel encoded symbol received from a transmitter is decoded by one of a chase-combining scheme and a code-combining scheme selected based on an ID value of the subpacket indicating a start position of the symbol. In this case, the chase-combining scheme is partly used for the encoded symbol of the information bit. With such a mode, decoding can be performed at a low code rate.

摘要翻译： 在便携式因特网终端中的解码装置中，从发送器接收到的信道编码符号通过追踪合并方案和基于子包的ID值选择的代码组合方案中的一个进行解码，指示符号的开始位置 。 在这种情况下，追踪合成方案被部分地用于信息比特的编码符号。 利用这种模式，可以以低码率执行解码。

公开(公告)号：US20100019888A1

公开(公告)日：2010-01-28

申请号：US12516159

申请日：2007-06-15

申请人： Seung-Kwon Cho ,  Su-Chang Chae ,  Young-Il Kim

发明人： Seung-Kwon Cho ,  Su-Chang Chae ,  Young-Il Kim

IPC分类号： H04Q5/22

CPC分类号： G06F17/30879

摘要： The present invention relates to a URL providing apparatus and a method thereof, and a mobile station that accesses the Internet by using the provided URL, and an Internet access method thereof. The mobile station attaches an RF-ID tag that stores an RF-ID tag value corresponding to identification information of the mobile station thereto, and thus when a user brings the mobile station into an interrogation range of an RF-ID reader included in the URL providing apparatus, the URL providing apparatus receives the corresponding RF-ID tag value from the RF-ID reader. When the URL providing apparatus acquires an IP address of the mobile station by using the received RF-ID tag value and provides a URL to the mobile station by using the acquired IP address, the mobile station automatically accesses the Internet by using the URL. Such an Internet access method can minimize additional cost of the mobile station and simplify an Internet access process to a specific URL.

摘要翻译： 本发明涉及一种URL提供装置及其方法，以及通过使用提供的URL访问因特网的移动台及其互联网访问方法。 移动台附加存储与移动站的识别信息相对应的RF-ID标签值的RF-ID标签，因此当用户将移动站带入包含在URL中的RF-ID读取器的询问范围 提供装置，URL提供装置从RF-ID读取器接收对应的RF-ID标签值。 当URL提供装置通过使用接收的RF-ID标签值获取移动站的IP地址并通过使用所获取的IP地址向移动站提供URL时，移动站通过使用URL自动访问因特网。 这样的因特网接入方法可以使移动站的附加成本最小化，并简化对特定URL的因特网访问过程。

公开(公告)号：US08068510B2

公开(公告)日：2011-11-29

申请号：US10583167

申请日：2004-11-03

申请人： Jun-Woo Kim ,  Young-Hoon Kim ,  Su-Chang Chae ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Young-Hoon Kim ,  Su-Chang Chae ,  Youn-Ok Park

IPC分类号： H04Q11/02

CPC分类号： H04L5/023 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/2608

摘要： Disclosed is a demodulation apparatus for receiving signals by an adaptive modulation and coding method, and demodulating the signals, in an OFDMA based packet communication system, comprising: a QAM demapper for performing QAM demapping to the received signals by a modulation method using a maximum modulation ratio, until modulation methods for each of sub-channels are analyzed; a slot buffer for storing the data outputted from the QAM demapper; a channel decoder for decoding the data stored in the slot buffer and analyzing modulation methods for each sub-channels and transferring the analyzed modulation methods to the QAM demapper; and in at the same time, reading valid data from the data stored in the slot buffer, based on the analyzed modulation methods for each sub-channels, and demodulating the valid data.

摘要翻译： 公开了一种用于在基于OFDMA的分组通信系统中通过自适应调制和编码方法接收信号并解调信号的解调装置，包括：QAM解映射器，用于通过使用最大调制的调制方法对所接收的信号进行QAM解映射 比例，直到分析每个子信道的调制方法; 用于存储从QAM解映射器输出的数据的时隙缓冲器; 用于解码存储在时隙缓冲器中的数据并分析每个子信道的调制方法并将分析的调制方法传送到QAM解映射器的信道解码器; 并且同时，基于针对每个子信道的分析的调制方法和解调有效数据，从存储在时隙缓冲器中的数据读取有效数据。

公开(公告)号：US07954035B2

公开(公告)日：2011-05-31

申请号：US11722214

申请日：2005-03-25

申请人： Su-Chang Chae ,  Youn-Ok Park

发明人： Su-Chang Chae ,  Youn-Ok Park

IPC分类号： H03M13/00

CPC分类号： H03M13/116 ,  H03M13/1177

摘要： The present invention provides an LDPC encoder, a channel encoder of a portable internet system including the LDPC encoder, and an encoding method thereof. The LDPC encoder according to the present invention generates a Costas array, shifts it, generates an analogous circulation parity check matrix having a repeated pattern from the shifted Costas array, and performs encoding by using the parity check matrix. With this LDPC encoder, complexity of encoding system may be reduced.

摘要翻译： 本发明提供一种LDPC编码器，包括LDPC编码器的便携式互联网系统的信道编码器及其编码方法。 根据本发明的LDPC编码器生成Costas阵列，将其移位，从移位的Costas阵列生成具有重复模式的类似循环奇偶校验矩阵，并通过使用奇偶校验矩阵进行编码。 利用该LDPC编码器，可以减少编码系统的复杂性。

公开(公告)号：US20100008284A1

公开(公告)日：2010-01-14

申请号：US12445436

申请日：2007-10-12

申请人： Su-Chang Chae ,  Young-Il Kim

发明人： Su-Chang Chae ,  Young-Il Kim

IPC分类号： H04B7/14

CPC分类号： H04B7/2606

摘要： Provided are a method of relaying a data burst in a relay station (RS) of a multi-hop relay (MMR) system using a direct relay zone, and a system using the method. The RS requests a base station to assign the direct relay zone in a frame in which a demodulation and forwarding scheme that demodulates, and then modulates and transmits a data burst is applied, receives an acknowledgement to the request from the base station, and relays a data burst using the frame in which the direct relay zone is assigned. Accordingly, since a data burst can be relayed within one frame, relay latency can be reduced.

摘要翻译： 提供了使用直接中继区域在多跳中继（MMR）系统的中继站（RS）中中继数据突发的方法，以及使用该方法的系统。 RS请求基站在直接中继区域中分配一个帧，在该帧中解调和转发方案进行解调，然后调制和发送数据脉冲串，从基站接收对该请求的确认，并中继一个 使用其中分配有直接中继区的帧的数据突发。 因此，由于可以在一帧内中继数据突发，所以可以减少中继等待时间。

公开(公告)号：US08134914B2

公开(公告)日：2012-03-13

申请号：US11721136

申请日：2005-11-10

申请人： Jun-Woo Kim ,  Su-Chang Chae ,  Young-Ha Lee ,  Eon-Young Hong ,  Youn-Ok Park

发明人： Jun-Woo Kim ,  Su-Chang Chae ,  Young-Ha Lee ,  Eon-Young Hong ,  Youn-Ok Park

IPC分类号： H04J11/00

CPC分类号： H04L5/0044 ,  H04L5/0048 ,  H04L5/0092

摘要： A subcarrier allocating apparatus allocating data to be transmitted to a plurality of orthogonal subcarriers in an orthogonal frequency division multiplexing (OFDM) system is provided. The apparatus includes a logical index generator generating a logical index for allocating a data subcarrier to a physical index, the logical index being included with only data subcarriers and the physical index indicating a location of a substantial subcarrier within a symbol, an intermediate index converter converting the logical index into an intermediate index by performing a given operation on the generated logical index and a pilot location constant, and a physical index converter converting the intermediate index into a physical index based on the number of data subcarriers on the left and right sides of a null subcarrier for insertion of a guard interval formed by the null subcarrier.

摘要翻译： 提供了一种在正交频分复用（OFDM）系统中分配要发送到多个正交子载波的数据的副载波分配装置。 该装置包括逻辑索引生成器，其生成用于将数据子载波分配给物理索引的逻辑索引，所述逻辑索引仅包括数据子载波，并且所述物理索引指示符号内的实质子载波的位置，中间索引转换器转换 通过对所生成的逻辑索引和导频位置常数执行给定的操作而将中间索引的逻辑索引转换成中间索引;以及物理索引转换器，其基于左侧和右侧的数据子载波的数量将中间索引转换为物理索引 用于插入由无效副载波形成的保护间隔的无效副载波。

公开(公告)号：US08576726B2

公开(公告)日：2013-11-05

申请号：US12735166

申请日：2008-10-13

申请人： Seung Kwon Cho ,  Jung Hoon Oh ,  Su Chang Chae ,  Young-Il Kim

发明人： Seung Kwon Cho ,  Jung Hoon Oh ,  Su Chang Chae ,  Young-Il Kim

IPC分类号： G01R31/06

CPC分类号： H04W72/1289 ,  Y02D70/146

摘要： A communication method according to the present invention includes receiving MAP in formation, acquiring an initial scheduled frame number and a current frame number from the MAP information, calculating the difference between the initial scheduled frame number and the current frame number, comparing the difference between the initial scheduled frame number and the current frame number with a reference value and setting a scheduled frame number, and performing transmission or reception in the scheduled frame. Therefore, even though a MAP loss occurs, the mobile station can receive only downlink data effective in downlink, thereby reducing power consumption for unnecessary reception, and can exactly perform transmission in a frame in which it should transmit in uplink.

摘要翻译： 根据本发明的通信方法包括：接收MAP，从MAP信息中获取初始调度帧号和当前帧号，计算初始调度帧号与当前帧号之间的差值， 初始调度帧号和具有参考值的当前帧号，并设置调度帧号，并在调度帧中执行发送或接收。 因此，即使发生MAP丢失，移动台也可以只接收下行链路中有效的下行链路数据，从而减少不必要的接收的功耗，能够在上行链路中发送的帧中正确地进行发送。

公开(公告)号：US08542624B2

公开(公告)日：2013-09-24

申请号：US12808824

申请日：2008-09-16

申请人： Su Chang Chae ,  Seung Kwon Cho ,  Young-Il Kim

发明人： Su Chang Chae ,  Seung Kwon Cho ,  Young-Il Kim

IPC分类号： H04B7/14

CPC分类号： H04L25/24 ,  H04L1/0003 ,  H04L1/0056 ,  H04L27/0008 ,  H04L27/34 ,  H04L2001/0097

摘要： A method of transmitting a signal according to the present invention includes: receiving a signal that is encoded with a predetermined code rate and that is modulated by a first modulation method from a base station; creating a signal that is obtained by demodulating the signal that is modulated by the first modulation method using a method corresponding to the first modulation method; creating a signal that is obtained by modulating the demodulated signal using a second modulation method while maintaining the predetermined code rate; and transmitting the signal that is modulated by the second modulation to a mobile station.Therefore, it is possible to reduce the cost of the relay station and simplify the system of the relay station. Further, during the modulation and demodulation, the symbol offset is changed to create various modulated and demodulated signals.

摘要翻译： 根据本发明的发送信号的方法包括：从基站接收以预定码率编码并由第一调制方法调制的信号; 创建通过使用对应于第一调制方法的方法解调由第一调制方法调制的信号而获得的信号; 创建通过使用第二调制方法调制解调信号而获得的信号，同时保持预定码率; 以及将由所述第二调制调制的信号发送到移动台。 因此，可以降低中继站的成本并简化中继站的系统。 此外，在调制和解调期间，改变符号偏移以产生各种调制和解调的信号。

公开(公告)号：US08055986B2

公开(公告)日：2011-11-08

申请号：US12064175

申请日：2005-12-05

申请人： Su-Chang Chae ,  Youn-Ok Park

发明人： Su-Chang Chae ,  Youn-Ok Park

IPC分类号： H03M13/03

CPC分类号： H03M13/4169 ,  H03M13/4107 ,  H03M13/413 ,  H03M13/6502

摘要： The present invention relates to a decoder for tail-biting convolution codes and a method thereof. The decoder receives an encoding bit sequence in a convolutional encoding method from a channel, generates an expanded encoding bit sequence, Viterbi decodes the expanded encoding bit sequence, and generates decoded data. In addition, the decoder selects a central bit sequence of the decoded data, rearranges the central bit sequence, and generates final decoded data. Accordingly, the decoder has a simplified configuration for decoding the bit sequence encoded in the tail biting convolutional encoding method, and the decoder also decodes a bit sequence encoded in a zero-tail convolutional encoding method.

摘要翻译： 本发明涉及一种用于尾部卷积码的解码器及其方法。 解码器从信道中以卷积编码方式接收编码比特序列，生成扩展编码比特序列，维特比解码扩展编码比特序列，并产生解码数据。 此外，解码器选择解码数据的中央位序列，重新排列中央位序列，并生成最终解码数据。 因此，解码器具有用于解码以尾巴卷积编码方法编码的比特序列的简化配置，并且解码器还对以零尾卷积编码方式编码的比特序列进行解码。