公开(公告)号：US07903605B2

公开(公告)日：2011-03-08

申请号：US12684250

申请日：2010-01-08

申请人： Fang-Chen Cheng ,  Shupeng-Li ,  Lei Song

发明人： Fang-Chen Cheng ,  Shupeng-Li ,  Lei Song

IPC分类号： H04W4/00

CPC分类号： H04W72/1278 ,  H04B7/022 ,  H04W16/10 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/442

摘要： A method and an apparatus for scheduling transmissions of a plurality of cells in a wireless communications system including one or more base stations is provided. The method comprises providing a set of virtual channels to enable an intra-cell transmission orthogonal to another transmission within each cell of the plurality of cells and inter-cell transmissions orthogonal to other transmissions across a cluster of cells associated with the one or more base stations. The method further comprises exchanging signaling messages between two or more base stations to coordinate scheduling of the intra-cell transmission with the inter-cell transmissions for the cluster of cells. For optimizing a parameter associated with scheduling of a plurality of users from a cluster of cells in a wireless communication system, an optimal power level for the parameter of each active user may be searched to maximize an indication of system capacity of the wireless communication system. This enables a coordinated jointly scheduling of the users active in the cluster of cells based on the optimal power levels such that the total interference within the cluster may be minimized to maximize the system throughput/capacity.

摘要翻译： 提供了一种用于在包括一个或多个基站的无线通信系统中调度多个小区的传输的方法和装置。 该方法包括提供一组虚拟信道以使得能够与多个小区的每个小区内的另一个传输正交的小区内传输，以及与一个或多个基站相关联的小区的其他传输正交的小区间传输 。 该方法还包括在两个或多个基站之间交换信令消息以协调小区内传输的调度与小区簇的小区间传输。 为了优化与来自无线通信系统中的小区的集群的多个用户的调度相关联的参数，可以搜索每个活动用户的参数的最佳功率电平以最大化无线通信系统的系统容量的指示。 这使得能够基于最佳功率电平来协调在小区集群中活动的用户的协调调度，使得可以最小化集群内的总干扰以使系统吞吐量/容量最大化。

公开(公告)号：US07844277B2

公开(公告)日：2010-11-30

申请号：US11386065

申请日：2006-03-21

申请人： Fang-Chen Cheng ,  Shupeng Li ,  Lei Song

发明人： Fang-Chen Cheng ,  Shupeng Li ,  Lei Song

IPC分类号： H04Q7/20

CPC分类号： H04W28/00 ,  H04W24/02 ,  H04W72/00 ,  H04W92/04 ,  H04W92/045 ,  H04W92/20

摘要： A method is provided for coordinating distributed radio resource management. The method comprises communicating information between a plurality of units having radio resource management responsibilities, wherein the communicated information is related to radio resources associated with each unit.

摘要翻译： 提供了一种协调分布式无线电资源管理的方法。 该方法包括在具有无线电资源管理责任的多个单元之间传送信息，其中所传送的信息与与每个单元相关联的无线电资源相关。

公开(公告)号：US07782967B2

公开(公告)日：2010-08-24

申请号：US11842398

申请日：2007-08-21

申请人： Fang-Chen Cheng ,  Lei Song ,  Robert Soni

发明人： Fang-Chen Cheng ,  Lei Song ,  Robert Soni

IPC分类号： H04K1/10

CPC分类号： H04L5/023 ,  H04L27/2657 ,  H04L2027/0034

摘要： The present invention provides a method of processing a baseband signal including user signals transmitted by a plurality of users. The method includes applying frequency offset compensations to the baseband signal, thereby to form respective frequency-shifted baseband signals. Each frequency compensation shifts the baseband signal by a multiple of a selected frequency offset and each resulting frequency-shifted baseband signal includes frequency-shifted user signals. The method also includes assigning at least some of the frequency-shifted user signals to groups. Each group corresponds to one of the frequency compensations and the assignment is carried out so that each group includes frequency-shifted user signals that have an estimated frequency offset that lies within a range determined by the corresponding frequency compensation. The method further includes estimating a frequency offset of each of the user signals based on the frequency-shifted user signal and the frequency compensation of the group including the frequency-shifted user signal.

摘要翻译： 本发明提供一种处理包括由多个用户发送的用户信号的基带信号的方法。 该方法包括对基带信号应用频率补偿补偿，从而形成相应的频移基带信号。 每个频率补偿将基带信号移位所选频率偏移的倍数，并且每个所得到的频移基带信号包括频移用户信号。 该方法还包括将至少一些频移用户信号分配给组。 每个组对应于频率补偿之一，并且执行分配，使得每个组包括具有位于由对应的频率补偿确定的范围内的估计频率偏移的频移用户信号。 该方法还包括基于频移用户信号和包括频移用户信号的组的频率补偿来估计每个用户信号的频率偏移。

公开(公告)号：US20090196238A1

公开(公告)日：2009-08-06

申请号：US12237849

申请日：2008-09-25

申请人： Fang-Chen Cheng ,  Lei Song

发明人： Fang-Chen Cheng ,  Lei Song

IPC分类号： H04W72/00

CPC分类号： H04L5/0053 ,  H04L1/0027 ,  H04L1/1671 ,  H04L1/1692 ,  H04L1/1893 ,  H04L5/0007

摘要： An exemplary method of communicating includes multiplexing control signaling in a physical uplink control channel (PUCCH) onto a physical uplink shared channel (PUSCH) by puncturing PUSCH data with PUCCH control information using a uniform distribution of the PUCCH information within at least one resource block of the PUSCH data. One example includes using a first constant amplitude zero autocorrelation sequence (CAZAC) index on PUCCH for communicating CQI and ACK information together and using a second, different CAZAC sequence index for communicating CQI information alone or with NAK information or DTX. The used index provides an indication of whether ACK information is communicated. The used index also provides implicit DTX detection without additional processing.

摘要翻译： 一种通信的示例性方法包括：在物理上行链路控制信道（PUCCH）中将控制信令复用到物理上行链路共享信道（PUSCH）上，通过使用PUCCH信息在PUCCH资源块的至少一个资源块内均匀分布PUCCH信息 PUSCH数据。 一个例子包括在PUCCH上使用第一恒定幅度零自相关序列（CAZAC）索引，用于一起传送CQI和ACK信息，并且使用第二不同的CAZAC序列索引来单独地传送CQI信息或与NAK信息或DTX通信。 所使用的索引提供ACK信息是否通信的指示。 使用的索引还提供隐含的DTX检测，无需额外的处理。

公开(公告)号：US20080310561A1

公开(公告)日：2008-12-18

申请号：US11946541

申请日：2007-11-28

申请人： Lei Song ,  Fang-Chen Cheng ,  Henry H. Ye

发明人： Lei Song ,  Fang-Chen Cheng ,  Henry H. Ye

IPC分类号： H04L27/06

CPC分类号： H04L27/265 ,  H04L27/2613 ,  H04L27/2652

摘要： A low complexity RACH preamble detector is described herein. The RACH preamble detection algorithm uses the peak detection of the time domain correlation function through frequency domain processing. The frequency domain processing considers the reference signals generated directly from frequency domain CAZAC sequence or time domain CAZAC sequence with DFT conversion. A low-complexity poly-phase LPF along with down sampling is implemented before the FFT to reduce the required length of the long FFT operation N-folded.

摘要翻译： 本文描述了低复杂度RACH前导码检测器。 RACH前导码检测算法通过频域处理使用时域相关函数的峰值检测。 频域处理考虑直接从频域CAZAC序列或时域CAZAC序列生成的参考信号，并进行DFT转换。 在FFT之前实现了低复杂度多相LPF以及下采样，以减少N-fold的长FFT运算所需的长度。

公开(公告)号：US20070254598A1

公开(公告)日：2007-11-01

申请号：US11415945

申请日：2006-05-01

申请人： Rainer Bachl ,  Fang-Chen Cheng ,  Lei Song

发明人： Rainer Bachl ,  Fang-Chen Cheng ,  Lei Song

IPC分类号： H04B1/38

CPC分类号： H04L27/261 ,  H04B7/2637 ,  H04W72/1226

摘要： A method is provided for maintaining synchronization between an AT and a base station during an idle period. During the idle period, a reduced number of uplink reference signals for uplink channel quality estimation are sent to the base station by the AT. The uplink reference signals are sent to assist coherent demodulation and uplink channel quality estimation for scheduling. During the uplink idle period, the numbers of uplink reference signals are designed to be reduced in selective coherent bandwidths. The selection of the coherent bandwidth alternates in time and covers the entire spectrum to allow the channel quality estimation through the entire spectrum.

摘要翻译： 提供了一种用于在空闲时段期间保持AT与基站之间的同步的方法。 在空闲期间，用于上行链路信道质量估计的上行链路参考信号的数量减少由AT发送到基站。 发送上行链路参考信号以协助相干解调和上行链路信道质量估计进行调度。 在上行链路空闲时段期间，上行链路参考信号的数量被设计为在选择性相干带宽中减少。 相干带宽的选择在时间上交替并且覆盖整个频谱以允许通过整个频谱的信道质量估计。

公开(公告)号：US20070225003A1

公开(公告)日：2007-09-27

申请号：US11386065

申请日：2006-03-21

申请人： Fang-Chen Cheng ,  Shupeng Li ,  Lei Song

发明人： Fang-Chen Cheng ,  Shupeng Li ,  Lei Song

IPC分类号： H04Q7/20

CPC分类号： H04W28/00 ,  H04W24/02 ,  H04W72/00 ,  H04W92/04 ,  H04W92/045 ,  H04W92/20

摘要： A method is provided for coordinating distributed radio resource management. The method comprises communicating information between a plurality of units having radio resource management responsibilities, wherein the communicated information is related to radio resources associated with each unit.

摘要翻译： 提供了一种协调分布式无线电资源管理的方法。 该方法包括在具有无线电资源管理责任的多个单元之间传送信息，其中所传送的信息与与每个单元相关联的无线电资源相关。

公开(公告)号：US06212399B1

公开(公告)日：2001-04-03

申请号：US09036153

申请日：1998-03-06

申请人： Sarath Kumar ,  Sanjiv Nanda ,  Lei Song

发明人： Sarath Kumar ,  Sanjiv Nanda ,  Lei Song

IPC分类号： H04B700

CPC分类号： H04W52/221 ,  H04W52/241 ,  H04W52/362

摘要： A technique for controlling the power with which a wireless terminal transmits is disclosed. One embodiment of the present invention comprises: transmitting a first signal at a first power level; receiving a series of n power control signals, bi−n+1 through bi; setting a step size based on a measure of dispersion of the n power control signals; and transmitting a second signal at a second power level that is based on the first power level and the step size.

摘要翻译： 公开了一种用于控制无线终端发射的功率的技术。 本发明的一个实施例包括：以第一功率电平发送第一信号; 接收一系列n个功率控制信号，bi-n + 1到bi; 基于n个功率控制信号的色散测量设置步长; 以及基于所述第一功率电平和所述步长大小的第二功率电平发送第二信号。