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1. 发明申请

US20080232320A1 Dynamic Resource Allocation Method Based on Frequency Reuse Partitioning For Ofdma/Fdd System, and Frame Transmission Method Therefor 失效
标题翻译：基于频率重用分区的Fordma / Fdd系统的动态资源分配方法及其帧传输方法
公开(公告)号：US20080232320A1
公开(公告)日：2008-09-25
申请号：US12063933
申请日：2006-08-17
申请人： Hee-Soo Lee , Jae-Young Ahn , Kyung-Hi Chang , Joo Heo , In-Suk Cha
发明人： Hee-Soo Lee , Jae-Young Ahn , Kyung-Hi Chang , Joo Heo , In-Suk Cha
IPC分类号： H04Q7/00 , H04L27/28
CPC分类号： H04W16/10 , H04W28/22 , H04W72/0453
摘要： Provided are a dynamic resource allocation method based on frequency reuse partitioning for an Orthogonal Frequency Division Multiple Access (OFDMA) system, and a frame transmission method therefor. The dynamic resource allocation method includes: a) dividing a coverage into cells based on frequency reuse partitioning; b) selecting a candidate user to receive a channel allocated thereto based on the ratio; c) acquiring distance information for the candidate user; and d) checking whether the candidate user is in an inner or outer cell area based on the distance information. If the candidate user is in the inner cell area, a subchannel group among subchannel groups having a Frequency Reuse Factor (FRF) lower than a threshold value is selected and subcarriers of the selected subchannel group is allocated. If the candidate user is in the outer cell area, a subchannel group among subchannel groups having a FRF higher than the threshold value is selected.
摘要翻译：提供了一种基于正交频分多址（OFDMA）系统的频率复用分割的动态资源分配方法及其帧传输方法。动态资源分配方法包括：a）基于频率重用分区将覆盖划分为小区; b）基于所述比率选择候选用户以接收分配给其的信道; c）获取候选用户的距离信息; 以及d）基于距离信息来检查候选用户是否在内部或外部小区区域。如果候选用户在内部小区区域，则选择具有低于阈值的频率重用因子（FRF）的子信道组之中的子信道组，并且分配所选择的子信道组的子载波。如果候选用户在外部小区区域，则选择FRF高于阈值的子信道组之中的子信道组。

2. 发明授权

US08116780B2 Dynamic resource allocation method based on frequency reuse partitioning for OFMDA/FDD system, and frame transmission method therefor 失效
标题翻译：基于OFMDA / FDD系统的频率复用分区的动态资源分配方法及其帧传输方法
公开(公告)号：US08116780B2
公开(公告)日：2012-02-14
申请号：US12063933
申请日：2006-08-17
申请人： Hee-Soo Lee , Jae-Young Ahn , Kyung-Hi Chang , Joo Heo , In-Suk Cha
发明人： Hee-Soo Lee , Jae-Young Ahn , Kyung-Hi Chang , Joo Heo , In-Suk Cha
IPC分类号： H04W72/00
CPC分类号： H04W16/10 , H04W28/22 , H04W72/0453
摘要： Provided are a dynamic resource allocation method based on frequency reuse partitioning for an Orthogonal Frequency Division Multiple Access (OFDMA) system, and a frame transmission method therefor. The dynamic resource allocation method includes: a) dividing a coverage into cells based on frequency reuse partitioning; b) selecting a candidate user to receive a channel allocated thereto based on the ratio; c) acquiring distance information for the candidate user; and d) checking whether the candidate user is in an inner or outer cell area based on the distance information. If the candidate user is in the inner cell area, a subchannel group among subchannel groups having a Frequency Reuse Factor (FRF) lower than a threshold value is selected and subcarriers of the selected subchannel group is allocated. If the candidate user is in the outer cell area, a subchannel group among subchannel groups having a FRF higher than the threshold value is selected.
摘要翻译：提供了一种基于正交频分多址（OFDMA）系统的频率复用分割的动态资源分配方法及其帧传输方法。动态资源分配方法包括：a）基于频率重用分区将覆盖划分为小区; b）基于所述比率选择候选用户以接收分配给其的信道; c）获取候选用户的距离信息; 以及d）基于距离信息来检查候选用户是否在内部或外部小区区域。如果候选用户在内部小区区域，则选择具有低于阈值的频率重用因子（FRF）的子信道组之中的子信道组，并且分配所选择的子信道组的子载波。如果候选用户在外部小区区域，则选择FRF高于阈值的子信道组之中的子信道组。

3. 发明申请

US20090316635A1 Method and frame structure for supporting dynamic channel allocation and dynamic power allocation in frequency reuse partitioning based OFDMA system 审中-公开
标题翻译：基于OFDMA系统的频率复用分区支持动态信道分配和动态功率分配的方法和帧结构
公开(公告)号：US20090316635A1
公开(公告)日：2009-12-24
申请号：US12453690
申请日：2009-05-19
申请人： Kyung Hi Chang , In Suk Cha , Joo Heo
发明人： Kyung Hi Chang , In Suk Cha , Joo Heo
IPC分类号： H04W72/04 , H04L27/28 , H04W52/04
CPC分类号： H04W16/10 , H04L1/0026 , H04L5/0037 , H04L5/0044 , H04L5/006 , H04L5/0064 , H04W28/18 , H04W52/146 , H04W52/262 , H04W52/283 , H04W52/346 , H04W72/0413 , H04W72/0453
摘要： Provided are a dynamic channel/power allocation method for an FRP-based OFDMA system and a frame/slot structure. capable of supporting the dynamic channel/power allocation method. In the FRP-based OFDMA system, each of cells has an inner cell, an outer cell and a plurality of sectors and performs data communication with a plurality of MSs therein through one or more orthogonal subchannel groups. In the dynamic channel/power allocation method, a BS receives a feedback channel condition from an MS provided with a service of the BS and allocates a subchannel group with a high SINR to each MS in consideration of the fairness and the distance information of each MS. Power is allocated to each MS on the basis of the conditions of a channel allocated to each MS, thereby obtaining a multi-user diversity gain.
摘要翻译：提供了一种用于基于FRP的OFDMA系统和帧/时隙结构的动态信道/功率分配方法。能够支持动态信道/功率分配方法。在基于FRP的OFDMA系统中，每个小区具有内部小区，外部小区和多个扇区，并通过一个或多个正交子信道组与其中的多个MS执行数据通信。在动态信道/功率分配方法中，BS考虑到每个MS的公平性和距离信息，从提供有BS业务的MS接收到反馈信道条件，并向每个MS分配具有高SINR的子信道组。基于分配给每个MS的信道的条件，将功率分配给每个MS，从而获得多用户分集增益。

4. 发明申请

US20080089278A1 Method and frame structure for supporting dynamic channel allocation and dynamic power allocation in frequency reuse partitioning based OFDMA system 审中-公开
标题翻译：基于OFDMA系统的频率复用分区支持动态信道分配和动态功率分配的方法和帧结构
公开(公告)号：US20080089278A1
公开(公告)日：2008-04-17
申请号：US11545723
申请日：2006-10-11
申请人： Kyung Hi Chang , In Suk Cha , Joo Heo
发明人： Kyung Hi Chang , In Suk Cha , Joo Heo
IPC分类号： H04Q7/00
CPC分类号： H04W16/10 , H04L1/0026 , H04L5/0037 , H04L5/0044 , H04L5/006 , H04L5/0064 , H04W28/18 , H04W52/146 , H04W52/262 , H04W52/283 , H04W52/346 , H04W72/0413 , H04W72/0453
摘要： Provided are a dynamic channel/power allocation method for an FRP-based OFDMA system and a frame/slot structure capable of supporting the dynamic channel/power allocation method. In the FRP-based OFDMA system, each of cells has an inner cell, an outer cell and a plurality of sectors and performs data communication with a plurality of MSs therein through one or more orthogonal subchannel groups. In the dynamic channel/power allocation method, a BS receives a feedback channel condition from an MS provided with a service of the BS and allocates a subchannel group with a high SINR to each MS in consideration of the fairness and the distance information of each MS. Power is allocated to each MS on the basis of the conditions of a channel allocated to each MS, thereby obtaining a multi-user diversity gain.
摘要翻译：提供了一种用于基于FRP的OFDMA系统的动态信道/功率分配方法和能够支持动态信道/功率分配方法的帧/时隙结构。在基于FRP的OFDMA系统中，每个小区具有内部小区，外部小区和多个扇区，并通过一个或多个正交子信道组与其中的多个MS执行数据通信。在动态信道/功率分配方法中，BS考虑到每个MS的公平性和距离信息，从提供有BS业务的MS接收到反馈信道条件，并向每个MS分配具有高SINR的子信道组。基于分配给每个MS的信道的条件，将功率分配给每个MS，从而获得多用户分集增益。

5. 发明申请

US20090196362A1 TRANSMISSION METHOD AND APPARATUS FOR ALLOCATING SUBCHANNEL AND FORMING STATIONARY BEAM TO MAXIMIZE TRANSMISSION EFFICIENCY IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING/MULTIPLE ACCESS BASED WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：用于分配子信道和形成静态光束的传输方法和装置，以最大限度地提高正交频分多址/多路访问无线通信系统的传输效率
公开(公告)号：US20090196362A1
公开(公告)日：2009-08-06
申请号：US12304291
申请日：2006-09-28
申请人： Myung-Sun Song , Sung-Hyun Hwang , Gwang-Zeen Ko , Kyung-Hi Chang , Sung-Ho Park , Sang-Jun Ko , Joo Heo , Jung-Ju Kim
发明人： Myung-Sun Song , Sung-Hyun Hwang , Gwang-Zeen Ko , Kyung-Hi Chang , Sung-Ho Park , Sang-Jun Ko , Joo Heo , Jung-Ju Kim
IPC分类号： H04L27/28
CPC分类号： H04L5/0058 , H04B7/0408 , H04L1/0003 , H04L1/0009 , H04L5/0023 , H04L5/0032 , H04L5/0037 , H04L5/0046
摘要： Provided are a transmission method and apparatus for allocating a subchannel and forming a stationary beam to maximize transmission efficiency in an OFDMA based wireless communication system. The method includes determining the subchannel for the equipment of each user based on the channel state of the equipment of each user, determining a beam index for the equipment of each user, based on location information and direction of arrival information of the equipment of each user, generating an OFDM symbol by mapping a modulation symbol corresponding to the equipment of each user to the determined subchannel, and transmitting the generated OFDM symbol to a wireless space by forming a beam following the determined beam index. Using the method, the equipment of each user can be allocated with an advantageous subchannel, can remove an interference signal at low cost, and can increase total throughput of an OFDMA system downlink.
摘要翻译：提供了一种用于分配子信道并形成固定波束以在基于OFDMA的无线通信系统中最大化传输效率的传输方法和装置。该方法包括基于每个用户的设备的信道状态来确定每个用户的设备的子信道，基于每个用户的设备的位置信息和到达方向信息确定每个用户的设备的波束索引通过将与每个用户的设备相对应的调制符号映射到所确定的子信道来生成OFDM符号，并且通过形成遵循所确定的波束索引的波束来将生成的OFDM符号发送到无线空间。使用该方法，可以为每个用户的设备分配有利的子信道，可以以低成本去除干扰信号，并且可以增加OFDMA系统下行链路的总吞吐量。

6. 发明申请

US20070237069A1 Multi-Step Channel Prediction Apparatus and Method for Adaptive Transmission in OFDM/FDD System 审中-公开
标题翻译： OFDM / FDD系统中自适应传输的多步信道预测装置及方法
公开(公告)号：US20070237069A1
公开(公告)日：2007-10-11
申请号：US11674063
申请日：2007-02-12
申请人： Kyung Hi Chang , Joo Heo
发明人： Kyung Hi Chang , Joo Heo
IPC分类号： H04J11/00
CPC分类号： H04L25/022 , H04L1/0003 , H04L1/0019 , H04L1/0026 , H04L1/0036 , H04L27/2601 , H04W24/00 , H04W74/04
摘要： Provided are a multi-step channel prediction apparatus and method for adaptive transmission in an OFDM/FDD system. A channel prediction is preformed considering a time-varying characteristic of a channel changing within one slot, in addition to feedback and processing delay time between a transmitter and a receiver, and an adaptive transmission is performed. Therefore, a target PER performance can be maintained without degradation of the system performance. The channel prediction apparatus includes: a primary channel prediction unit for predicting a channel to be generated before an Lth OFDM symbol from an output of a channel estimation unit; a secondary channel prediction unit for predicting a channel to be generated before a 2Lth OFDM symbol, based on a channel value predicted by the primary channel prediction unit and a measured channel value that is a reception channel value previously checked by a mobile station; and a channel information determination unit for determining if a channel characteristic during one slot period is monotone decreasing or monotone increasing, based on the outputs of the primary channel prediction unit and the secondary channel prediction unit, and transmitting corresponding channel status information (CSI) to the transmitter. By predicting the channel considering the channel time-varying characteristic and performing the adaptive transmission, a target QoS can be maintained in the case where the mobility is about 30 km/h, without loss of the system throughput performance.
摘要翻译：提供了一种用于OFDM / FDD系统中的自适应传输的多步信道预测装置和方法。除了在发射机和接收机之间的反馈和处理延迟时间之外，考虑到在一个时隙内改变的信道的时变特性，执行信道预测，并且执行自适应传输。因此，可以维持目标PER性能，而不会降低系统性能。信道预测装置包括：主信道预测单元，用于从信道估计单元的输出预测在第L个OFDM符号之前要产生的信道; 第二信道预测单元，用于基于由主信道预测单元预测的信道值和作为先前接收信道值的测量信道值来预测在第2LOFDM符号之前要生成的信道由移动台检查; 以及信道信息确定单元，用于基于所述主信道预测单元和所述辅助信道预测单元的输出，确定在一个时隙周期期间的信道特性是单调递减还是单调增加，以及将相应的信道状态信息（CSI）发送到发射机。通过考虑信道时变特性并执行自适应传输来预测信道，在移动性为约30km / h的情况下，可以保持目标QoS，而不损失系统吞吐量性能。

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