Ofdm System With Reverse Link Interference Estimation
    1.
    发明申请
    Ofdm System With Reverse Link Interference Estimation 有权
    OFDM系统具有反向链路干扰估计

    公开(公告)号:US20070297525A1

    公开(公告)日:2007-12-27

    申请号:US11791339

    申请日:2005-10-14

    摘要: A new method of performing interference estimation to allow the data packets to be efficiently delivered in an OFDM system. The interference estimation is performed on average over each frame for each mobile station individually in both frequency and time domains. Based on the estimated interference, the CIR can be determined by the BTS based on channel response estimates made by the BTS, or by the MS based on channel response estimates made for the uplink assuming a symmetrical channel. Numerical results show that the CIR estimation error could be very small if a sub-channel is considered as the minimum transmission unit. In terms of the aggregate throughput, the interference estimation method can provide a significant gain.

    摘要翻译: 一种执行干扰估计以允许在OFDM系统中有效地传送数据分组的新方法。 对于每个移动台,在频域和时域中分别对每个帧平均执行干扰估计。 基于估计的干扰,可以由BTS基于由BTS做出的信道响应估计来确定CIR,或者基于对假设对称信道的针对上行链路的信道响应估计由MS确定CIR。 数值结果表明,如果将子信道视为最小传输单元,则CIR估计误差可能非常小。 在总吞吐量方面,干扰估计方法可以提供显着的增益。

    Adaptive scheduling of voice traffic in a multi-carrier communication environment
    6.
    发明授权
    Adaptive scheduling of voice traffic in a multi-carrier communication environment 有权
    多载波通信环境中语音流量的自适应调度

    公开(公告)号:US09203578B2

    公开(公告)日:2015-12-01

    申请号:US13446461

    申请日:2012-04-13

    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 pre-assigns 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。 迭代调度最初为给定发送时间间隔未被永久分配的音调的每个剩余用户预先分配选择音调。 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。

    Adaptive power control data transmission system and methods
    7.
    发明授权
    Adaptive power control data transmission system and methods 有权
    自适应功率控制数据传输系统及方法

    公开(公告)号:US08457679B2

    公开(公告)日:2013-06-04

    申请号:US13488052

    申请日:2012-06-04

    IPC分类号: H04W52/24 H04W52/26

    CPC分类号: H04W52/262

    摘要: Systems and methods of performing power control in combination with AMC are provided. AMC is performed on the basis of an AMC parameter such as CINR. Once the AMC is set to a highest available AMC for transmission to a given receiver, if the CINR indicates that the highest AMC could be transmitted with less transmit power, the power is reduced. For receivers that are not receiving the highest available AMC for that receiver, they may have their transmit power increased.

    摘要翻译: 提供了与AMC结合进行功率控制的系统和方法。 基于AMC参数(如CINR)执行AMC。 一旦将AMC设置为最高可用AMC以传输给给定的接收机,如果CINR指示可以以更少的发射功率传输最高的AMC,则功率被减小。 对于没有接收到该接收机的最高可用AMC的接收机,它们可能具有增加的发射功率。

    Multi-antenna scheduling system and method
    8.
    发明授权
    Multi-antenna scheduling system and method 有权
    多天线调度系统及方法

    公开(公告)号:US08351967B2

    公开(公告)日:2013-01-08

    申请号:US13252636

    申请日:2011-10-04

    IPC分类号: H04B7/00

    摘要: A wireless communication method and system using virtual MIMO (“V-MIMO”) are provided. Post processing signal to interference and noise ratios (“SINR”) for a plurality of signals corresponding to a plurality of mobile terminals arranged as a V-MIMO group are estimated. The one of the plurality of mobile terminals having the highest post processing SINR is selected. Wireless communication for the selected mobile terminal is scheduled. The signal corresponding to the selected mobile terminal is cancelled. Post processing signal to interference and noise ratios (“SINR”) for the signals corresponding to the remaining mobile terminals is re-estimated. The one of the remaining mobile terminals having the highest post processing SINR is selected. Wireless communication for the selected remaining mobile terminal is scheduled.

    摘要翻译: 提供了一种使用虚拟MIMO(V-MIMO)的无线通信方法和系统。 估计对应于排列为V-MIMO组的多个移动终端的多个信号的后处理信号与干扰和噪声比(SINR)。 选择具有最高后处理SINR的多个移动终端中的一个。 安排所选移动终端的无线通信。 对应于所选移动终端的信号被取消。 对与剩余的移动终端相对应的信号的后处理信号与干扰和噪声比(SINR)进行重新估计。 选择具有最高后处理SINR的剩余移动终端中的一个。 调度所选择的剩余移动终端的无线通信。

    ADAPTIVE SCHEDULING OF VOICE TRAFFIC IN A MULTI-CARRIER COMMUNICATION ENVIRONMENT
    9.
    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:US20120195280A1

    公开(公告)日:2012-08-02

    申请号:US13446461

    申请日:2012-04-13

    IPC分类号: H04W72/12

    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 pre-assigns 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。 迭代调度最初为给定发送时间间隔未被永久分配的音调的每个剩余用户预先分配选择音调。 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。

    Adaptive power control data transmission systems and methods
    10.
    发明授权
    Adaptive power control data transmission systems and methods 有权
    自适应功率控制数据传输系统和方法

    公开(公告)号:US08204532B2

    公开(公告)日:2012-06-19

    申请号:US12088774

    申请日:2006-09-27

    IPC分类号: H04W52/24 H04W52/26

    CPC分类号: H04W52/262

    摘要: Systems and methods of performing power control in combination with AMC are provided. AMC is performed on the basis of an AMC parameter such as CINR. Once the AMC is set to a highest available AMC for transmission to a given receiver, if the CINR indicates that the highest AMC could be transmitted with less transmit power, the power is reduced. For receivers that are not receiving the highest available AMC for that receiver, they may have their transmit power increased.

    摘要翻译: 提供了与AMC结合进行功率控制的系统和方法。 基于AMC参数(如CINR)执行AMC。 一旦将AMC设置为最高可用AMC以传输给给定的接收机,如果CINR指示可以以更少的发射功率传输最高的AMC,则功率被减小。 对于没有接收到该接收机的最高可用AMC的接收机,它们可能具有增加的发射功率。