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333 条记录 (耗时 0.037 秒)

    ADAPTIVE SCHEDULING OF VOICE TRAFFIC IN A MULTI-CARRIER COMMUNICATION ENVIRONMENT
    61.
    发明申请
    ADAPTIVE SCHEDULING OF VOICE TRAFFIC IN A MULTI-CARRIER COMMUNICATION ENVIRONMENT 有权
    多媒体通信环境中语音交通的自适应调度

    公开(公告)号：US20070189320A1

    公开(公告)日：2007-08-16

    申请号：US10599103

    申请日：2005-03-24

    申请人： Jianming Wu ,  Wen Tong ,  Peiying Zhu

    发明人： Jianming Wu ,  Wen Tong ,  Peiying Zhu

    IPC分类号： H04J3/16

    CPC分类号： H04W72/12 ,  H04L1/0009 ,  H04L1/08 ,  H04L1/1867 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/006 ,  H04L5/0064 ,  H04W28/26 ,  H04W72/085 ,  H04W72/1263

    摘要： The present invention provides a technique for scheduling data, and in particular, scheduling real-time or voice data for transmissions during a transmit time interval in a multi-carrier communication environment. For each transmit time interval, channel condition indicia for multiple users is determined, and an iterative scheduling process is then implemented based in part on the channel condition indicia. The iterative scheduling initially preassigns select tones for each of the remaining users that have not been permanently assigned tones for the given transmit time interval. Next, the remaining user having the least favorable channel conditions is selected as an active user. The newly selected active user is then permanently assigned the select tones that were initially pre-assigned to that particular user. The permanently assigned tones are removed from consideration, and the process is repeated until all the remaining users are permanently assigned unique tones for scheduling.

    摘要翻译： 本发明提供了一种用于调度数据的技术，特别是在多载波通信环境中的传输时间间隔期间调度实时或话音数据以进行传输。 对于每个发送时间间隔，确定多个用户的信道条件标记，并且部分地基于信道条件标记来实现迭代调度过程。 迭代调度最初预分配对于给定发送时间间隔未被永久分配的音调的剩余用户中的每一个选择音调。 接下来，选择具有最不利条件的剩余用户作为活动用户。 然后，将新选择的活动用户永久分配给最初预分配给该特定用户的选择音。 从考虑中删除永久分配的音调，并重复该过程，直到所有剩余用户被永久分配唯一的音调进行调度。

    System and method for scheduling transmission from multiple-beam transmitters
    62.
    发明授权
    System and method for scheduling transmission from multiple-beam transmitters 有权
    用于从多光束发射机调度传输的系统和方法

    公开(公告)号：US07206608B1

    公开(公告)日：2007-04-17

    申请号：US10736501

    申请日：2003-12-17

    申请人： Jianming Wu ,  Peiying Zhu ,  Wen Tong

    发明人： Jianming Wu ,  Peiying Zhu ,  Wen Tong

    IPC分类号： H04M1/00 ,  H04Q7/20 ,  H04B7/185 ,  H01Q3/00

    CPC分类号： H04W16/28

    摘要： Systems and methods for scheduling transmissions from multi-beam transmitters to sets of receivers are provided. An angle of departure is determined for each of the receivers, and the transmissions to the receivers is then scheduled on the basis of the separation between the angles of departure between the receivers. For example, a constraint may be imposed that no two receivers having an angle of departure separated by less than a first minimum will be scheduled during an even scheduling interfold. Some implementations include a prioritized scheduling system in which high priority receivers are scheduled according to a performance metric subject to the angle departure constraint, and subsequently low priority receivers as scheduled only subject to the angle departure constraint.

    摘要翻译： 提供了用于调度从多波束发射机到接收机组的传输的系统和方法。 确定每个接收机的出发角度，然后基于接收机之间的出发角度之间的间隔来调度到接收机的传输。 例如，可以施加约束，即在均匀调度交换期间将不安排具有分离出小于第一最小值的出发角的两个接收机。 一些实施方式包括优先调度系统，其中根据角度偏离约束条件下的性能度量调度高优先级接收机，以及接下来的低优先级接收机，仅受到角度偏离约束的约束。

    Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
    63.
    发明申请
    Scattered pilot pattern and channel estimation method for MIMO-OFDM systems 有权
    MIMO-OFDM系统的分散导频模式和信道估计方法

    公开(公告)号：US20070053282A1

    公开(公告)日：2007-03-08

    申请号：US11529246

    申请日：2006-09-29

    申请人： Wen Tong ,  Peiying Zhu ,  Jianglei Ma ,  Ming Jia

    发明人： Wen Tong ,  Peiying Zhu ,  Jianglei Ma ,  Ming Jia

    IPC分类号： H04J11/00

    CPC分类号： H04L27/2613 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0684 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0234 ,  H04L25/0244 ,  H04L27/2602 ,  H04L27/2627 ,  H04W52/42

    摘要： Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas.

    摘要翻译： 提供了使用用于数据符号和/或导频符号的跳频图案在OFDM（正交频分复用）传输资源中插入数据符号和导频符号的方法和装置。 数据符号和导频符号以二维时频模式分配给下行链路（基站到移动台）和上行链路（移动台到基站）传输资源。 对于MIMO-OFDM（多输入多输出OFDM）通信系统的每个天线，导频符号以时间 - 频率的散射图案插入，并且数据符号以与其它信号的时间频率相同的跳频图案插入 天线。

    MIMO communications
    66.
    发明申请
    MIMO communications 有权
    MIMO通信

    公开(公告)号：US20050085195A1

    公开(公告)日：2005-04-21

    申请号：US10689433

    申请日：2003-10-20

    申请人： Wen Tong ,  Ming Jia ,  Peiying Zhu

    发明人： Wen Tong ,  Ming Jia ,  Peiying Zhu

    IPC分类号： H04B7/06 ,  H04B7/00

    CPC分类号： H04B7/0691 ,  H04B7/0413 ,  H04B7/061 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0669 ,  H04B7/0891 ,  H04L1/0625 ,  H04L5/0023 ,  H04L5/006 ,  H04L25/0204 ,  H04L25/0242 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426

    摘要： The present invention allows a wireless communication system, such as a base station, to select N antennas from an associated group of M antennas for transmitting multiple streams of data to a given user. Based on the channel conditions between the M antennas of the wireless communication system and the multiple antennas at the receiver, the N antennas to use for transmission are selected to enhance channel capacity, signal-to-noise ratios, or a combination thereof. The channel conditions are measured at the receiver, and may be sent back to the wireless communication system for processing or may be processed at the receiver, wherein instructions are transmitted back to the wireless communication system to control antenna selection.

    摘要翻译： 本发明允许诸如基站的无线通信系统从相关联的M个天线组中选择N个天线，用于向给定的用户发送多个数据流。 基于无线通信系统的M个天线与接收机的多个天线之间的信道条件，选择用于传输的N个天线以增强信道容量，信噪比或其组合。 在接收机处测量信道条件，并且可以将其发送回无线通信系统进行处理或者可以在接收机处理，其中指令被发送回无线通信系统以控制天线选择。

    Method and system for wireless packet scheduling with per packet QoS support and link adaptation
    67.
    发明授权
    Method and system for wireless packet scheduling with per packet QoS support and link adaptation 有权
    无线分组调度的方法和系统，每个分组QoS支持和链路自适应

    公开(公告)号：US06879561B1

    公开(公告)日：2005-04-12

    申请号：US09704684

    申请日：2000-11-03

    申请人： Hang Zhang ,  Peiying Zhu ,  Shalini S. Periyalwar

    发明人： Hang Zhang ,  Peiying Zhu ,  Shalini S. Periyalwar

    IPC分类号： H04L1/00 ,  H04L12/56 ,  H04W72/08 ,  H04W72/12

    CPC分类号： H04W72/1226 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0017 ,  H04W72/1268

    摘要： A method and system for scheduling data in the down, or forward, link, on a per packet basis in a wireless telecommunications network. The scheduler determines the order of packets to be sent from multiple queues based on per IP QoS, real time channel condition and real time buffer occupancy. The scheduler determines the necessary support link adaptation on a per packet basis based on per packet QoS and the channel condition. The scheduling system and method take into consideration both upper layer per packet QoS, for example packet delay bound, and the real time channel condition (C/I) for each mobile terminal. The method of the present invention also determines the layer 2 frame length for each scheduled packet.

    摘要翻译： 一种用于在无线电信网络中以每个分组为基础在下行链路或前向链路中调度数据的方法和系统。 调度器基于每个IP QoS，实时信道状况和实时缓冲器占用来确定要从多个队列发送的分组的顺序。 调度器基于每个分组QoS和信道条件，在每个分组的基础上确定必要的支持链路适配。 调度系统和方法考虑到每个分组QoS的上层（例如分组延迟边界）和每个移动终端的实时信道状况（C / I）。 本发明的方法还确定每个调度的分组的层2帧长度。

    Fast space-time decoding using soft demapping with table look-up
    68.
    发明申请
    Fast space-time decoding using soft demapping with table look-up 有权
    快速时空解码使用软扫描与表查找

    公开(公告)号：US20050018789A1

    公开(公告)日：2005-01-27

    申请号：US10607860

    申请日：2003-06-27

    申请人： Ming Jia ,  Peiying Zhu ,  Wen Tong

    发明人： Ming Jia ,  Peiying Zhu ,  Wen Tong

    IPC分类号： H04L25/06 ,  H04L27/06 ,  H04L27/14

    CPC分类号： H04L27/38 ,  H04L1/0631 ,  H04L25/067 ,  H04L2025/03426

    摘要： From potential symbol combinations transmitted from a transmitter, Euclidean distances between the received signals and the symbol vectors are determined in light of the corresponding channel responses and stored in a Euclidean distance table, from which the smallest Euclidean distance is selected as a hard decision. The hard decision is used to find a bit vector corresponding to the estimated symbol vector associated with the hard decision. For each bit in the bit vector, a reduced Euclidean distance table is created to include only Euclidean distances associated with a competing bit associated with the hard decision. The minimum Euclidean distance from each reduced Euclidean distance table becomes a soft demapping decision for a corresponding bit. Log likelihood ratios for each bit are determined by the difference between the hard decision and respective soft demapping decisions. The differences are provided to a channel decoder to recover the originally transmitted bits.

    摘要翻译： 从发射机发送的潜在符号组合中，根据相应的信道响应确定接收信号和符号向量之间的欧几里德距离，并将其存储在欧几里得距离表中，从该欧几里德距离表中选择最小欧几里得距离作为硬判决。 硬判决用于找到与硬决策相关联的估计符号向量对应的位向量。 对于位矢量中的每个位，创建一个减少的欧氏距离表，以仅包括与与硬判决相关联的竞争位相关联的欧几里德距离。 每个缩小的欧几里德距离表的最小欧几里德距离成为相应位的软解映射决策。 每个比特的对数似然比由硬判决和相应的软解映射决策之间的差确定。 差异被提供给信道解码器以恢复原始发送的比特。

    Terrestrial and non-terrestrial communication systems, apparatuses, and methods
    69.
    发明授权
    Terrestrial and non-terrestrial communication systems, apparatuses, and methods 有权

    公开(公告)号：US11979220B2

    公开(公告)日：2024-05-07

    申请号：US18115851

    申请日：2023-03-01

    申请人： Jianglei Ma ,  Ming Jia ,  Peiying Zhu ,  Wen Tong

    发明人： Jianglei Ma ,  Ming Jia ,  Peiying Zhu ,  Wen Tong

    IPC分类号： H04B7/185

    CPC分类号： H04B7/18513 ,  H04B7/18517 ,  H04B7/18526 ,  H04B7/18539 ,  H04B7/18558

    摘要： The present disclosure relates, in part, to non-terrestrial communication systems, and in some embodiments to the integration of terrestrial and non-terrestrial communication systems. Non-terrestrial communication systems can provide a more flexible communication system with extended wireless coverage range and enhanced service quality compared to conventional communication systems. A method representative of aspects of the present application includes receiving, by an apparatus connected in a first sub-system, from a radio access network, configuration information for performing a channel condition measurement on a second sub-system, reporting, by the apparatus to the radio access network, channel condition measurement of a downlink reference signal received from the second sub-system, transmitting, by the apparatus, a wireless transmission to the second sub-system responsive to the channel condition measurement meeting a predefined condition.