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31.发明授权公开(公告)号：US09078222B2
公开(公告)日：2015-07-07
申请号：US11568544
申请日：2005-05-05
CPC分类号： H04W52/327
摘要： A transmit power control scheme for use in point-to-multipoint communication uses a random access channel for power control signals transmitted by the receiving stations (200).
摘要翻译： 用于点对多点通信的发射功率控制方案使用由接收站（200）发送的功率控制信号的随机接入信道。
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公开(公告)号：US09008008B2
公开(公告)日：2015-04-14
申请号：US12597013
申请日：2008-04-28
CPC分类号： H04B7/0456 , H04B7/0417 , H04B7/0632 , H04B7/0634 , H04B7/0639 , H04L27/2628 , H04W16/28
摘要： The present invention relates to a method for communicating from a primary station with an array of transmit antennas to a secondary station on a downlink channel, said method comprising steps of, at the primary station, (a) configuring the downlink channel, step (a) being subdivided into steps of: 5 (a2) computing a precoding to be applied during a corresponding transmission from the primary station to the secondary station for each of an array of transmit antennas; (a3) applying a reversible transform to the precoding, thus ascertaining a set of precoding coefficients substantially representative of the precoding in a transform 10 domain; (a4) computing a set of parameters comprising at least one parameter, said parameter being substantially representative of the coefficients obtained at step (a3); (a5) signaling the set of parameters to the secondary station; 15 (b) transmitting data to the secondary station substantially according to the precoding computed at step (a2).
摘要翻译： 本发明涉及一种用于从主站与发射天线阵列在下行链路信道上向次站进行通信的方法，所述方法包括以下步骤：在主站处，（a）配置下行链路信道，步骤（a ）被细分为以下步骤：5（a2）计算在发射天线阵列中的每个发射天线从主站到次站的相应传输期间应用的预编码; （a3）将可逆变换应用于预编码，从而确定基本上代表变换10域中的预编码的一组预编码系数; （a4）计算包括至少一个参数的一组参数，所述参数基本上代表在步骤（a3）获得的系数; （a5）向该次要站发信号通知一组参数; 15（b）基本上按照步骤（a2）中计算的预编码将数据发送到次站。
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33.发明授权公开(公告)号：US08665769B2
公开(公告)日：2014-03-04
申请号：US12989659
申请日：2009-04-21
IPC分类号： H04H20/71
CPC分类号： H04B7/0608 , H04B7/0452 , H04B7/0617 , H04L5/0053 , H04L5/023 , H04W72/04
摘要： The present invention relates to a method for signaling a plurality of transmission parameters for a plurality of communications between a primary station and a plurality of respective secondary stations in a multi-user MIMO mode, comprising the steps of (a) signaling the value of at least one first transmission parameter in a multicast message to at least two secondary stations, the value of the first transmission parameter being common to the respective communications corresponding to the at least two secondary stations, and (b) signaling the value of at least one second transmission parameter in a plurality of unicast messages to each secondary stations of the plurality of secondary stations.
摘要翻译： 本发明涉及一种用于在多用户MIMO模式中为主站和多个相应次站之间的多个通信信令发送多个传输参数的方法，包括以下步骤：（a）发信号通知 至少两个次站的多播消息中的至少一个第一传输参数，所述第一传输参数的值对应于所述至少两个次站的各个通信共同，以及（b）发信号通知至少一个第二 将多个单播消息中的传输参数传送到多个次站中的每个次站。
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公开(公告)号：US08638734B2
公开(公告)日：2014-01-28
申请号：US12739167
申请日：2008-10-27
IPC分类号： H04W4/00
CPC分类号： H04W74/0833 , H04W74/002 , H04W74/0866
摘要： The invention provides a method for efficiently defining E-RACH resources at least partly with reference to R99 RACH resources. This is achieved such that very little additional signaling is required on the BCH. E-RACH resources may be efficiently defined by signaled or predetermined differences from the R99 RACH resources. Resources for each PRACH are broadcast using the BCH. However, some UEs are configured to use E-RACH, for example by means of higher-layer signaling. In one embodiment, the resources available for each E-RACH for the configured UEs are given by the same set of signatures but the scrambling code and sub-channels are different. In another embodiment, the resources available for each E-RACH for the configured UEs are given by the same set of scrambling codes, but the signatures and sub-channels are different. In a typical, but not exclusive embodiment, the invention is applied in UMTS WCDMA.
摘要翻译： 本发明提供了一种用于至少部分地参考R99RACH资源有效地定义E-RACH资源的方法。 实现这一点，使得在BCH上需要非常少的附加信令。 可以通过与R99RACH资源的信号或预定的差异有效地定义E-RACH资源。 使用BCH广播每个PRACH的资源。 然而，一些UE被配置为使用E-RACH，例如通过更高层的信令。 在一个实施例中，针对配置的UE的每个E-RACH可用的资源由同一组签名给出，但是扰码和子信道是不同的。 在另一实施例中，用于配置的UE的每个E-RACH可用的资源由同一组扰码给出，但是签名和子信道是不同的。 在一个典型但非排他性的实施例中，本发明应用于UMTS WCDMA。
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35.发明授权公开(公告)号：US08526991B2
公开(公告)日：2013-09-03
申请号：US12739169
申请日：2008-10-21
IPC分类号： H04W52/10
CPC分类号： H04W8/22 , H04L1/0004 , H04L1/001 , H04L1/0025 , H04L1/0028 , H04W16/28 , H04W48/12 , H04W72/042
摘要： A method for transmission of control information from a primary station to at least one secondary station, includes transmitting with a first set of control information parameters control information corresponding to data transmission with a first set of data parameters, and transmitting with a second set of control information parameters control information corresponding to data transmission with a second set of data parameters. At least one control information parameter has a difference in value between the two sets of control information parameters, where the difference in value has a dependency on the difference between the value of a data parameter in the first set of data parameters and the value of the data parameter in the second set of data parameters. The data parameter is a different parameter from the at least one control information parameter.
摘要翻译： 一种用于将控制信息从主站传输到至少一个次站的方法，包括利用第一组数据参数发送具有与数据传输相对应的控制信息参数控制信息的第一组控制信息，并且以第二组控制 信息参数控制信息对应于数据传输与第二组数据参数。 至少一个控制信息参数在两组控制信息参数之间具有差值，其中值的差异依赖于第一组数据参数中的数据参数的值与 数据参数在第二组数据参数中。 数据参数是与至少一个控制信息参数不同的参数。
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公开(公告)号：US08315210B2
公开(公告)日：2012-11-20
申请号：US10523940
申请日：2003-07-29
CPC分类号： H04L1/1854 , H04L1/16 , H04L1/1803 , H04L5/0055 , H04L5/14 , H04L2001/125 , H04W52/0216 , H04W72/04 , H04W72/0446 , Y02D70/1242 , Y02D70/1244 , Y02D70/25
摘要： A communication system includes a downlink indicator channel for the transmission of an indicator signal indicating that a data packet is scheduled to be transmitted on a downlink data channel from a primary station to a secondary station. In response to detection of the indicator signal, the secondary station transmits a status signal, for example a negative acknowledgement signal, on an uplink channel to the primary station immediately before transmission of a positive or negative acknowledgement signal to indicate the status of the received data packet. By providing the primary station with two chances to detect the case where the secondary station fails to detect the indicator signal, peak power requirements of the uplink channel can be reduced, thereby reducing system interference levels.
摘要翻译： 通信系统包括用于传送指示信号的下行链路指示符信道，指示数据分组被调度为在从主站到次站的下行链路数据信道上发送。 响应于指示符信号的检测，次站在发送正或否的确认信号之前立即在上行链路信道上向主站发送状态信号，例如否定确认信号，以指示接收到的数据的状态 包。 通过为主站提供两种机会来检测次站无法检测到指示信号的情况，可以降低上行链路信道的峰值功率要求，从而降低系统干扰电平。
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公开(公告)号：US08112086B2
公开(公告)日：2012-02-07
申请号：US11616343
申请日：2006-12-27
IPC分类号： H04Q7/20
CPC分类号： H04W52/18 , H04B1/7115 , H04W52/40
摘要： A secondary station has a receiver capable of resolving signals received as a plurality of multipath signals from a plurality of base stations during a soft handover process. This capability may, for example, be provided by a Rake receiver. In order to decode and act upon the received signals in a very short period of time, signals arriving after a predetermined time are not processed by the receiver which is able instead to process weaker signals which arrived before the time. Such a secondary station is particularly suitable for decoding and acting upon power control commands included in received signals in a UMTS system, for which a very limited period of time is provided by the UMTS specification. The predetermined time may be the time after which signals are received too late for use in determining the next power control change.
摘要翻译： 次级站具有能够在软切换过程期间从多个基站解析作为多个多路径信号接收的信号的接收机。 该功能可以例如由Rake接收机提供。 为了在非常短的时间段内对接收的信号进行解码和动作，在预定时间之后到达的信号不被接收机处理，接收机可以代替处理在时间之前到达的较弱的信号。 这样的次站特别适合于对UMTS系统中的接收信号中包括的功率控制命令进行解码和作用，UMTS系统提供非常有限的时间段。 预定时间可以是接收太迟的信号以用于确定下一个功率控制变化的时间。
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公开(公告)号：US07561893B2
公开(公告)日：2009-07-14
申请号：US10510260
申请日：2003-02-28
IPC分类号： H04B7/00
CPC分类号： H04W52/325 , H04L1/1692 , H04L1/1809 , H04L1/1858 , H04L2001/125 , H04W52/286 , H04W52/36 , H04W52/48 , H04W52/50
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 two uplink control channels, a first channel for transmission of status signals to indicate the status of received data packets and a second channel for transmission of pilot information. In operation, on detection (402) of a data packet the secondary station increases (404) the transmission power of the second channel, thereby enabling the primary station to obtain a better estimate of uplink channel properties and hence increase the accuracy with which it can decode the status signal. The secondary station transmits (406) the status signal, typically either an acknowledgement (ACK) or negative acknowledgement (NACK), and decreases (408) the transmission power of the second control channel signal. The increase and decrease in power are not necessarily identical, for example as a result of the effects of power control.
摘要翻译： 通信系统包括用于从主站向次站传输数据分组的下行链路数据信道和两个上行链路控制信道，用于发送状态信号以指示接收到的数据分组的状态的第一信道和用于传输的第二信道 的飞行员信息。 在操作中，由于副站增加（404）第二信道的发送功率，所以在数据分组的检测（402）中，主站能够获得对上行链路信道特性的更好估计，从而提高其可以准确的准确性 解码状态信号。 次站通信（406）状态信号，通常是确认（ACK）或否定确认（NACK），并减小（408）第二控制信道信号的发送功率。 功率的增加和减少不一定相同，例如由于功率控制的影响。
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39.发明授权公开(公告)号：US07164914B2
公开(公告)日：2007-01-16
申请号：US09951860
申请日：2001-09-13
IPC分类号： H04Q7/20
CPC分类号： H04W52/40
摘要： A secondary station has a receiver capable of resolving signals received as a plurality of multipath signals from a plurality of primary stations during a soft handover process. To decode and act upon the received signals in a very short period of time, the duration of an offset between a downlink timing reference and an uplink timing reference may be varied by the secondary station. By choosing a suitable value for the offset, the secondary station can reduce the changes to the uplink timing reference. The downlink timing reference and/or the offset may be determined from the timings of received downlink signals. The secondary station may request a primary station to adjust the timing of its downlink transmissions to increase the amount of time available for processing the signals by, for example, arranging for downlink signals from the primary station supplying the strongest signal to be received first.
摘要翻译： 次级站具有能够在软切换过程中从多个主站解析作为多个多径信号接收的信号的接收机。 为了在非常短的时间段内解码并对接收到的信号起作用，下行链路定时参考和上行链路定时参考之间的偏移的持续时间可以由次站改变。 通过为偏移量选择合适的值，次站可以减少对上行链路定时参考的改变。 可以根据接收的下行链路信号的定时来确定下行链路定时参考和/或偏移。 次站可以请求主站调整其下行链路传输的定时，以增加可用于处理信号的时间量，例如通过安排来自提供要首先接收的最强信号的主站的下行链路信号。
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公开(公告)号：US06826412B2
公开(公告)日：2004-11-30
申请号：US10420679
申请日：2003-04-22
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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