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1. 发明授权

US08064392B2 Method for dynamic resource allocation of uplink and downlink in OFDMA/TDD cellular system 有权
标题翻译： OFDMA / TDD蜂窝系统中上行链路和下行链路的动态资源分配方法
公开(公告)号：US08064392B2
公开(公告)日：2011-11-22
申请号：US11859287
申请日：2007-09-21
申请人： Kyung Hi Chang , Sang Jun Ko , Tae Hyoung Sun , Jae Hyeong Kim
发明人： Kyung Hi Chang , Sang Jun Ko , Tae Hyoung Sun , Jae Hyeong Kim
IPC分类号： H04B7/00
CPC分类号： H04W52/267 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L5/0046 , H04L5/006 , H04L5/0064 , H04L5/1469 , H04W24/10 , H04W72/04
摘要： Provided is a method for dynamic resource allocation of uplink and downlink in an OFDMA/TDD cellular system. The method for dynamic resource allocation of uplink in an OFDMA/TDD cellular system includes the steps of determining the number of sub-channels which can be allocated to each user through an FLR algorithm; performing channel allocation for a first frame through a round-robin algorithm in which channel information is not needed; performing dynamic channel allocation for a next frame through uplink channel information measured by uplink channel sounding; and performing power control. The method for dynamic resource allocation of downlink in an OFDMA/TDD cellular system includes the steps of selecting a user through a GPF algorithm; performing dynamic channel allocation through an ASA algorithm so as to perform a FASA algorithm for obtaining a multiuser diversity gain; and performing dynamic power allocation through an improved CHC algorithm, in consideration of a data rate provided to each user and a channel state.
摘要翻译：提供了一种在OFDMA / TDD蜂窝系统中的上行链路和下行链路的动态资源分配的方法。在OFDMA / TDD蜂窝系统中上行链路的动态资源分配方法包括以下步骤：通过FLR算法确定可以分配给每个用户的子信道的数量; 通过不需要信道信息的循环算法来执行第一帧的信道分配; 通过上行链路信道测距测量的上行信道信息对下一帧进行动态信道分配; 并执行功率控制。 OFDMA / TDD蜂窝系统中下行链路的动态资源分配方法包括以下步骤：通过GPF算法选择用户; 通过ASA算法执行动态信道分配，以便执行用于获得多用户分集增益的FASA算法; 并且考虑到提供给每个用户的数据速率和信道状态，通过改进的CHC算法执行动态功率分配。

2. 发明申请

US20090190537A1 METHOD, APPARATUS FOR DYNAMIC RESOURCE ALLOCATION METHOD IN OFDMA-BASED COGNITIVE RADIO SYSTEM AND FORWARD LINK FRAME STRUCTURE THEREOF 审中-公开
标题翻译：方法，基于OFDMA的认知无线电系统动态资源分配方法及其前向链路帧结构的方法
公开(公告)号：US20090190537A1
公开(公告)日：2009-07-30
申请号：US12093485
申请日：2006-11-14
申请人： Sung Hyun Hwang , Gwangzeen Ko , Myung Sun Song , Soon Ik Jeon , Chang Joo Kim , KyungHi Chang , Jung Ju Kim , Sang Jun Ko
发明人： Sung Hyun Hwang , Gwangzeen Ko , Myung Sun Song , Soon Ik Jeon , Chang Joo Kim , KyungHi Chang , Jung Ju Kim , Sang Jun Ko
IPC分类号： H04W72/04
CPC分类号： H04L25/0232 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L5/0007 , H04L5/0032 , H04L5/0039 , H04L5/0044 , H04L5/0048 , H04L5/006 , H04L5/0085 , H04L25/0226 , H04W72/0453
摘要： Provided are a dynamic resource allocation method and apparatus in an Orthogonal Frequency Division Multiple Access (OFDMA)-based cognitive radio system and a downlink frame structure of the method and apparatus. The method includes a base station (BS) selecting one of an Adaptive Modulation and Coding (AMC) subchannel allocation scheme, in which a subchannel comprising at least one bin comprising a first plurality of continuous subcarriers in a frequency domain, is allocated, and a diversity subchannel allocation scheme, in which a subchannel comprising a second plurality of scattered subcarriers in the frequency domain is allocated, according to a level of frequency selectivity of an unused idle frequency band; and the BS allocating at least one subchannel to a terminal according to the selected subchannel allocation scheme. Accordingly, downlink throughput in the cognitive radio system can be increased.
摘要翻译：提供了一种基于正交频分多址（OFDMA）的认知无线电系统中的动态资源分配方法和装置以及该方法和装置的下行链路帧结构。该方法包括选择自适应调制和编码（AMC）子信道分配方案之一的基站（BS），其中包括包括频域中的第一多个连续子载波的至少一个分组的子信道，并且分集子信道分配方案，其中根据未使用的空闲频带的频率选择性的级别分配包括频域中的第二多个分散子载波的子信道; 并且BS根据所选择的子信道分配方案向终端分配至少一个子信道。因此，可以增加认知无线电系统中的下行链路吞吐量。

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