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公开(公告)号：US08730858B2
公开(公告)日：2014-05-20
申请号：US13315554
申请日：2011-12-09
IPC分类号： G08C17/00
CPC分类号： H04W48/06 , H04W72/005
摘要： When a radio station terminates a first service on a first radio frequency channel and selects a second radio frequency channel for engaging in a second service, a time delay is inserted after the termination of the first service and before selecting the second radio frequency channel or before engaging in the second service. The time delay is dependent on the state of the radio station and/or a characteristic of the second service.
摘要翻译： 当无线电站在第一射频信道上终止第一服务并选择用于参与第二服务的第二射频信道时，在第一服务终止之后并且在选择第二射频信道之前或之前插入时间延迟 从事第二项服务。 时间延迟取决于无线电台的状态和/或第二服务的特性。
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公开(公告)号：US08509187B2
公开(公告)日：2013-08-13
申请号：US12933688
申请日：2009-03-16
IPC分类号： H04W4/00
CPC分类号： H04W72/0413 , H04W72/1236 , H04W72/1284
摘要： The present invention relates to method for communicating between a primary station and a secondary station comprising (a) at the secondary station, upon arrival of a data packet to be transmitted to the primary station, buffering said data packet in a buffer, and transmitting to the primary station a request for an uplink transmission resource if a request condition is satisfied, said request condition being based on at least one previous grant of uplink transmission resource, (b) at the primary station, granting to the secondary station an uplink transmission resource to be used.
摘要翻译： 本发明涉及在主站和次站之间进行通信的方法，该方法包括：（a）在次站到达要发送到主站的数据分组时，在缓冲器中缓存所述数据分组，并发送到 如果满足请求条件，主站请求上行链路传输资源，所述请求条件基于上行链路传输资源的至少一个先前许可，（b）在主站处向辅助站授予上行链路传输资源 要使用的。
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公开(公告)号：US08270534B2
公开(公告)日：2012-09-18
申请号：US11816100
申请日：2006-02-09
IPC分类号： H04L27/00
CPC分类号： H04L1/203
摘要： A receiver (13) of user equipment, UE, (10) of a Universal Mobile Telecommunications System, UMTS, network receives a digitally encoded radio signal over a downlink (11) from a base station (12). A Digital Signal Processor, DSP, (14) of the UE (10) estimates BER of data bits of power control commands received in the signal during an out of synchronisation procedure. More specifically, the DSP (14) samples the amplitude with which the data bits are received and determines a ratio of functions of one or more moments of the sampled amplitudes. The DSP (14) then compares the determined ratio to one or more values of BER for different ratios in a look-up table to estimate BER.
摘要翻译： 通用移动通信系统（UMTS）网络的UE（10）的用户设备的接收机（13）通过来自基站（12）的下行链路（11）接收数字编码的无线电信号。 UE（10）的数字信号处理器DSP（14）估计在失步同步过程期间在信号中接收的功率控制命令的数据位的BER。 更具体地，DSP（14）对接收到数据位的振幅进行采样，并确定采样振幅的一个或多个力矩的函数比。 然后，DSP（14）将确定的比率与查询表中的不同比率的一个或多个BER值进行比较，以估计BER。
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24.发明授权公开(公告)号：US07953003B2
公开(公告)日：2011-05-31
申请号：US11813696
申请日：2006-01-10
IPC分类号： H04L12/26
CPC分类号： H04W72/1221 , H04L47/10 , H04L47/14 , H04L47/28 , H04L47/283 , H04L47/50 , H04L47/6215 , H04L49/90 , H04W28/14 , H04W72/1236
摘要： A method of operating a communication station including queuing data units, estimating the transmission delay of at least one of the data units in the queue, and if the estimated transmission delay exceeds a threshold, requesting permission to transmit at least one data unit.
摘要翻译： 一种操作包括排队数据单元的通信站的方法，估计队列中的至少一个数据单元的传输延迟，以及如果所估计的传输延迟超过阈值，请求允许发送至少一个数据单元。
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公开(公告)号：US07606589B2
公开(公告)日：2009-10-20
申请号：US10603706
申请日：2003-06-25
IPC分类号： H04M1/00
CPC分类号： H04W52/221 , H04W52/362 , H04W52/42 , H04W52/60
摘要： In a radio communication system having a primary station and a plurality of secondary stations, the power of uplink and downlink channels between the primary station and a secondary station is controlled in a closed loop manner by each station transmitting power control commands to the other station. In response to these commands the receiving station adjusts its output power in steps.By combining a plurality of received power control commands before adjusting its output power the receiving station may emulate the ability to use a smaller power control step size than its minimum, thereby improving performance under certain channel conditions. In one embodiment when the required power control step size is less than the minimum step size of a particular station, that station processes a group of power control commands to determine whether to adjust its output power by its minimum step size. In an alternative embodiment the power control step size is fixed when the combining algorithm is used. The invention is applicable to power control in both primary and secondary stations.
摘要翻译： 在具有主站和多个次站的无线电通信系统中，主站和次站之间的上行链路和下行链路信道的功率以闭环方式由每个站向另一个站发送功率控制命令来控制。 响应于这些命令，接收站逐步调整其输出功率。 通过在调整其输出功率之前组合多个接收的功率控制命令，接收站可以模拟使用比其最小值小的功率控制步长的能力，从而改善在某些信道条件下的性能。 在一个实施例中，当所需功率控制步长小于特定站的最小步长时，该站处理一组功率控制命令以确定是否将其输出功率调整其最小步长。 在替代实施例中，当使用组合算法时，功率控制步长是固定的。 本发明适用于主站和次站的功率控制。
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公开(公告)号：US07392014B2
公开(公告)日：2008-06-24
申请号：US10518841
申请日：2003-06-12
CPC分类号： H04W52/286 , H04B17/24 , H04B17/309 , H04B17/382 , H04L1/0001 , H04L1/0026 , H04L1/20 , H04W24/10 , H04W52/143
摘要： A communication system comprises a downlink data channel for the transmission of data packets from a primary station to a secondary station and uplink and downlink control channels. The secondary station measures one or more characteristics of the data channel and issues a report to the primary station, which determines an operational parameter of the data channel in response to the report. The secondary station determines average channel characteristics over a measurement period. The length of the measurement period may be signalled by the primary station or determined directly by the secondary station. In one embodiment the selected period depends on the speed (V) of the secondary station. This is determined (604) by either station and tested to determine (606) whether it is outside the range for the current measurement period: if it is the period is reset (608).
摘要翻译： 通信系统包括用于从主站向次站发送数据分组的下行链路数据信道以及上行链路和下行链路控制信道。 次站测量数据通道的一个或多个特性，并向主站发出报告，主站响应报告确定数据通道的操作参数。 次站在测量周期内确定平均通道特性。 测量周期的长度可以由主站发信号通知，或由次站直接确定。 在一个实施例中，所选择的周期取决于次站的速度（V）。 这由任一站确定（604）并进行测试以确定（606）是否在当前测量周期的范围之外：如果周期被重置（608）。
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公开(公告)号：US07379434B2
公开(公告)日：2008-05-27
申请号：US10252981
申请日：2002-09-23
CPC分类号： H04W52/50 , H04L1/1692 , H04L1/1809 , H04L2001/125 , H04W52/286 , H04W52/44 , H04W52/48
摘要： A radio communication system comprises a communication channel for the transmission of data packets from a primary station (100) to a secondary station (110). In response to receipt of a data packet, the secondary station transmits an acknowledgement signal to the primary station indicating the status of the received data packet. The signal is selected from a set of at least two available signal types (for example positive and negative acknowledgements, ACK and NACK), and the power at which it is transmitted depends on the type of the signal.In one embodiment NACKs are transmitted at a higher power than ACKs, thereby reducing the chance of the primary station misinterpreting a NACK as an ACK. In another embodiment a REVERT signal is used to request retransmission of a previous packet. The REVERT signal may be identical to the NACK signal but transmitted at a higher power.
摘要翻译： 无线电通信系统包括用于从主站（100）传输到次站（110）的数据分组的通信信道。 响应于接收到数据分组，次站向主站发送指示接收到的数据分组的状态的确认信号。 该信号是从一组至少两种可用的信号类型（例如正和负确认，ACK和NACK）中选择的，并且其发送的功率取决于信号的类型。 在一个实施例中，以比ACK更高的功率发送NACK，从而减少主站误解NACK作为ACK的机会。 在另一个实施例中，REVERT信号用于请求重传先前的分组。 REVERT信号可以与NACK信号相同但是以较高功率发送。
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公开(公告)号：US07110786B2
公开(公告)日：2006-09-19
申请号：US09933790
申请日：2001-08-21
IPC分类号： H04B7/00
CPC分类号： H04W52/265 , H04L1/0001 , H04L1/1809 , H04L1/1812 , H04L1/1867 , H04W52/08 , H04W52/12 , H04W52/24 , H04W52/267
摘要： A method and apparatus for transferring information over a communications link includes transmitting information at a first power level, monitoring for correct reception of the transmitted information and transmitting further information at a second, power level other than that used for the original transmission if correct reception did not occur. The further information allows the content of the originally transmitted information to be established and in one embodiment constitutes a retransmission of the originally transmitted information. By retransmitting at a different power level the probability of correct reception may be enhanced, especially when the communications link is wireless. The first and second transmission power levels are governed using closed loop power control such that transmission power level is controlled to achieve a required quality of reception parameter at the receiving end of the link. In one arrangement the quality or reception parameter is the signal-to-interference ratio.
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公开(公告)号：US06556838B1
公开(公告)日：2003-04-29
申请号：US09575610
申请日：2000-05-22
IPC分类号： H04Q720
CPC分类号： H04W52/221 , H04W52/08 , H04W52/362 , H04W52/42 , H04W52/54 , H04W52/60
摘要： In a radio communication system having a primary station and plurality of secondary stations, power of uplink and downlink channels between the primary station and a secondary station is controlled in a closed loop manner by each station transmitting power control commands to the other station. Responsive to these commands receiving station adjusts its output power in steps. By considering a plurality of received power control commands receiving station may emulate the ability to use power control step sizes other than those it directly implements, for example step sizes smaller than its minimum or intermediate between implemented step sizes. Performance can thereby be improved under certain channel conditions. In one embodiment when required power control step size is less than the minimum step size of the receiving station, that station processes a group of power control commands to determine whether to adjust its output power by its minimum step size.
摘要翻译： 在具有主站和多个次站的无线电通信系统中，主站和次站之间的上行链路和下行链路信道的功率以闭环方式被每个站向另一个站发送功率控制命令来控制。 接收站响应这些命令会逐步调整其输出功率。 通过考虑多个接收的功率控制命令，接收站可以模拟使用除了其直接实现的功率控制步长之外的功率控制步长的能力，例如小于其最小值的步长或实现的步长之间的中间。 从而可以在某些渠道条件下改善性能。 在一个实施例中，当所需的功率控制步长小于接收站的最小步长时，该站处理一组功率控制命令以确定是否将其输出功率调整其最小步长。
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公开(公告)号：US09178600B2
公开(公告)日：2015-11-03
申请号：US10528940
申请日：2003-09-12
CPC分类号： H04W72/085 , H04B7/0413 , H04B7/0689 , H04B7/0691 , H04B7/0871 , H04B7/0874 , H04L5/0023 , H04L5/0042 , H04L5/006 , H04L5/0062 , H04L5/0085 , H04L5/0091 , H04W8/24 , H04W24/00 , H04W24/08 , H04W28/04 , H04W28/18
摘要： A packet data transmission system comprises primary stations (PS) having signal transmitting and receiving means and antennas (PA1 to PA4) for propagating downlink signals and receiving uplink signals and a plurality of secondary stations (SS) able to roam within the coverage areas of the primary stations. Each secondary station (SS1) has signal transmitting and receiving means, a predetermined number of antennas (SA1 to SA4), and means for monitoring its radio environment. Information about the radio environment is relayed as an uplink signal to the respective primary station which modifies its mode of transmission of packet data signals. The secondary station in response to the modified mode of transmission of the downlink signals adapts its receiver resources to process the packet data signals and effect cancellation of any interference.
摘要翻译： 分组数据传输系统包括具有信号发射和接收装置的主站（PS）和用于传播下行链路信号和接收上行链路信号的天线（PA1至PA4），以及能够漫游下行链路信号的覆盖区域内的多个次站（SS） 主站。 每个次站（SS1）具有信号发送和接收装置，预定数量的天线（SA1至SA4）以及用于监视其无线电环境的装置。 关于无线电环境的信息作为上行链路信号被中继到相应的主站，其修改分组数据信号的传输模式。 响应于下行链路信号的修改的传输模式的次站适应其接收机资源来处理分组数据信号并且实现任何干扰的消除。
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