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公开(公告)号：US08249611B1
公开(公告)日：2012-08-21
申请号：US12572406
申请日：2009-10-02
申请人： Debasish Sarkar , Sachin Vargantwar , Siddharth T. Oroskar , Deveshkumar Rai , Bhagwan Khanka , Manoj Shetty , Sandeep Goyal , Anoop Goyal
发明人： Debasish Sarkar , Sachin Vargantwar , Siddharth T. Oroskar , Deveshkumar Rai , Bhagwan Khanka , Manoj Shetty , Sandeep Goyal , Anoop Goyal
IPC分类号： H04W72/00
摘要： Systems and methods for dynamically adjusting the size of an access search window are provided. In an embodiment a base station uses an access search window size, which is initially set to a default value, to determine whether to accept access requests from access terminals (ATs). The base station operates to accept access requests from ATs when the ATs are within the distance defined by the value of the access search window. The base station further operates to measure an amount of traffic for a sector of a wireless coverage area and change the value of the access search window size based on the amount of traffic on the sector.
摘要翻译： 提供了用于动态调整访问搜索窗口大小的系统和方法。 在一个实施例中，基站使用初始设置为默认值的接入搜索窗口大小来确定是否接受来自接入终端（AT）的接入请求。 当AT在由访问搜索窗口的值定义的距离内时，基站操作以接受来自AT的接入请求。 基站进一步操作以测量无线覆盖区域的扇区的业务量，并且基于扇区上的业务量来改变接入搜索窗口大小的值。
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2.发明授权Selecting a power-control step size based on relative signal strength among signals in an active set 有权基于有源集合中的信号之间的相对信号强度来选择功率控制步长公开(公告)号：US08055293B1
公开(公告)日：2011-11-08
申请号：US12415872
申请日：2009-03-31
IPC分类号： H04B7/00
CPC分类号： H04W52/362 , H04B17/318 , H04W52/143 , H04W52/245 , H04W52/40
摘要： Methods and apparatus are provided for adjusting a forward-link power-control step size. An initial active set of coverage areas for a mobile station is maintained within which a first coverage area in the initial active set has a signal strength that is stronger than that of each of the other coverage areas in the initial active set. The first coverage area is determined to have dropped from the initial active set, resulting in a modified active set. In response, a signal-strength factor is calculated based on (a) a last non-zero signal-strength measurement of the first coverage area and (b) a second value. One or more forward-link power-control step sizes is selected based on at least the calculated factor. The one or more selected step sizes is used to increase the forward-link transmission power of at least one coverage area in the modified active set.
摘要翻译： 提供了用于调整前向链路功率控制步长的方法和装置。 保持用于移动台的初始活动的覆盖区域集合，其中初始活动集合中的第一覆盖区域具有比初始活动集合中的每个其他覆盖区域的信号强度更强的信号强度。 第一个覆盖区域被确定为从初始活动集中掉下来，导致修改的活动集。 作为响应，基于（a）第一覆盖区域的最后非零信号强度测量和（b）第二值来计算信号强度因子。 至少基于计算出的因子来选择一个或多个前向链路功率控制步长。 使用一个或多个所选择的步长来增加修改的活动集中的至少一个覆盖区域的前向链路传输功率。
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3.发明授权Performance based selection of channel elements for use in a wireless network 有权基于性能的选择在无线网络中使用的信道单元公开(公告)号：US09119092B1
公开(公告)日：2015-08-25
申请号：US12116011
申请日：2008-05-06
CPC分类号： H04W28/0236 , H04W36/06 , H04W36/30 , H04W72/082 , H04W72/085 , H04W72/1226 , H04W88/08
摘要： A method and apparatus for selecting channel elements in a wireless communication system based on their performance history. Data is collected indicating the performance of various channel elements over time, preferably eliminating from consideration any performance degradation due to air interface (e.g., radio frequency) issues. The data is then used to sort the channel elements in a priority order, from best-performing to worst-performing. When a channel element is to be selected for use in connection with an air interface channel (e.g., traffic channel or control channel), the channel element is then selected in accordance with the priority order, such as by selecting the channel element that has performed best over time. The priority-based selection of channel elements can thus leave poor-performing channel elements for use as a last resort, which can be advantageous in times of heavy network loading for instance.
摘要翻译： 一种用于基于其性能历史在无线通信系统中选择信道元素的方法和装置。 收集指示随着时间的推移各种信道元素的性能的数据，优选地从考虑到由于空中接口（例如射频）问题引起的任何性能下降的考虑。 然后，数据用于按优先级顺序对通道元素进行排序，从最佳性能到最差性能。 当要选择与空中接口信道（例如，业务信道或控制信道）结合使用的信道单元时，根据优先级顺序来选择信道单元，例如通过选择所执行的信道单元 最好的时间。 因此，基于优先级的信道单元的选择可以将不良的信道元素作为最后的手段使用，这在例如重网络负载的时候是有利的。
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4.发明授权Method and system for selecting a length of a preamble transmitted in an access probe 有权用于选择在接入探针中发送的前导码的长度的方法和系统公开(公告)号：US08437769B1
公开(公告)日：2013-05-07
申请号：US12033617
申请日：2008-02-19
IPC分类号： H04W24/00
CPC分类号： H04W74/08 , H04W64/003
摘要： A mobile station transmits a message by transmitting an access probe that includes the message preceded by a preamble. The mobile station selects the length of the preamble from among a first preamble length and a second preamble length. The second preamble length is greater than the first preamble length. The mobile station makes the selection based, at least in part, on the distance between the mobile station and the mobile station's primary base transceiver station (BTS). If the distance is greater than a threshold distance, the mobile station selects the second preamble length. If the distance is less than the threshold distance, the mobile station selects the first preamble length, provided that an idle handoff to a neighboring BTS that is more than the threshold distance away is unlikely.
摘要翻译： 移动台通过发送包括前导码前面的消息的接入探测器来发送消息。 移动站从第一前导码长度和第二前导码长度中选择前导码的长度。 第二前导码长度大于第一前导码长度。 移动台至少部分地基于移动台和移动台的主基站（BTS）之间的距离进行选择。 如果距离大于阈值距离，则移动站选择第二前同步码长度。 如果距离小于阈值距离，则移动台选择第一前导码长度，前提是对邻近BTS的空闲切换超过阈值距离不太可能。
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5.发明授权Selective scheduling of control channel messages ahead of best-effort traffic 有权在尽力而为流量之前选择性地调度控制信道消息公开(公告)号：US08416750B1
公开(公告)日：2013-04-09
申请号：US12420635
申请日：2009-04-08
IPC分类号： H04J3/00
CPC分类号： H04W72/1242 , H04W72/1278
摘要： A method and system is disclosed for selectively scheduling control channel messages ahead of traffic channel data. When a RAN in a wireless communication system operating at least according to IS-856 determines that a delay condition exists in the transmission of a particular control packet to access terminals, the RAN will determine if there is a particular traffic packet in active transmission that is classified according to best effort service (or similarly-characterized service class), and further if at least a threshold number of a nominal number of time-slot segments of the particular traffic packet remain untransmitted. If such a traffic packet is identified, the RAN will cancel transmission of the particular traffic packet and replace it with immediate transmission of the particular control packet.
摘要翻译： 公开了用于在业务信道数据之前有选择地调度控制信道消息的方法和系统。 当至少根据IS-856操作的无线通信系统中的RAN确定在向接入终端发送特定控制分组时存在延迟条件时，RAN将确定是否存在主动传输中的特定业务分组 根据尽力服务（或类似特征的业务类别）进行分类，以及进一步地，如果特定业务分组的至少一个阈值数量的时隙段的标称数目保持未被发送。 如果识别出这样的业务分组，则RAN将取消特定业务分组的传输，并将其替换为特定控制分组的即时传输。
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公开(公告)号：US08369853B1
公开(公告)日：2013-02-05
申请号：US12368323
申请日：2009-02-10
CPC分类号： H04W36/0083 , H04W36/0066
摘要： A method and system is disclosed for enhanced idle-state sector selection during hybrid-mode operation of an access terminal. A hybrid access terminal engaged in an IS-856 data communication session in a hybrid IS-2000/IS-856 wireless communication system will, responsive to a handoff of the IS-856 session, select a sector for its next, upcoming IS-2000 idle-state scan prior to the start of the scan. The selection will be made during an interval between IS-2000 idle-state scans, thereby reducing or eliminating the possible need for idle-state handoffs during idle-state scans, and resulting in shorter idle-state scans and better IS-856 performance.
摘要翻译： 公开了一种在接入终端的混合模式操作期间用于增强空闲状态扇区选择的方法和系统。 在混合IS-2000 / IS-856无线通信系统中参与IS-856数据通信会话的混合接入终端将响应于IS-856会话的切换，为其下一个即将到来的IS-2000选择扇区 在扫描开始之前的空闲状态扫描。 将在IS-2000空闲状态扫描之间的间隔期间进行选择，从而减少或消除在空闲状态扫描期间可能需要空闲状态切换，并导致更短的空闲状态扫描和更好的IS-856性能。
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7.发明授权Method for selecting resource-allocation type in a wireless communication system 有权在无线通信系统中选择资源分配类型的方法公开(公告)号：US07978674B1
公开(公告)日：2011-07-12
申请号：US12032926
申请日：2008-02-18
IPC分类号： H04B7/216
CPC分类号： H04W72/044 , H04W28/16 , H04W64/00
摘要： A method of selecting a type of resource-allocation to use for a call in a cellular wireless system, such as selecting a type of radio configuration to use for the call. According to the method, resource-availability in one more adjacent coverage areas may be used as a basis to select the type of resource-allocation to use in a current coverage area. For instance, given the choice between a radio configuration that consumes less base station power and a radio configuration that consumes more base station power, the radio configuration consuming more base station power may be selected if base station sufficient power is available in one or more adjacent coverage area(s), and the other radio configuration may be selected if insufficient base station power is available in the one or more adjacent coverage area(s). Distance between the mobile station and a current base station may be considered as well.
摘要翻译： 选择用于蜂窝无线系统中的呼叫的资源分配类型的方法，例如选择用于该呼叫的无线电配置的类型。 根据该方法，可以使用一个相邻覆盖区域中的资源可用性作为选择在当前覆盖区域中使用的资源分配的类型的基础。 例如，考虑到消耗较少基站功率的无线电配置与消耗更多基站功率的无线电配置之间的选择，如果基站足够的功率在一个或多个相邻的基站中可用，则可以选择消耗更多基站功率的无线电配置 覆盖区域，并且如果在一个或多个相邻覆盖区域中没有足够的基站功率，则可以选择另一个无线电配置。 也可以考虑移动台与当前基站之间的距离。
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8.发明授权Method and system for defining search windows based on mobile station location 失效基于移动台位置定义搜索窗口的方法和系统公开(公告)号：US08467365B1
公开(公告)日：2013-06-18
申请号：US12019374
申请日：2008-01-24
IPC分类号： H04B7/216
CPC分类号： H04W56/0015 , H04W56/006
摘要： A mobile station uses a search window to search for a target pilot signal transmitted by a target transmitter in a spread spectrum communication system. The search window may be centered on the expected phase of the target pilot signal at the mobile station. To calculate the expected phase, the mobile station estimates a transmission delay associated with the target pilot signal, based on at least the target transmitter's location and the mobile station's location. The transmission delay may account for the time it takes for the target pilot signal to propagate from the target transmitter to the mobile station. The expected phase of the target pilot signal may then be calculated based on at least a nominal phase of the target pilot signal (e.g., the phase when transmitted by the target transmitter) and the estimated transmission delay.
摘要翻译： 移动台使用搜索窗口来搜索由扩频通信系统中的目标发射机发送的目标导频信号。 搜索窗口可以在移动站处的目标导频信号的预期相位为中心。 为了计算预期相位，移动台至少基于目标发射机的位置和移动台的位置来估计与目标导频信号相关联的传输延迟。 传输延迟可以解决目标导频信号从目标发射机传播到移动台所花费的时间。 然后可以基于至少目标导频信号的标称相位（例如，由目标发射机发送的相位）和估计的传输延迟来计算目标导频信号的预期相位。
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公开(公告)号：US08203947B1
公开(公告)日：2012-06-19
申请号：US12351400
申请日：2009-01-09
IPC分类号： H04J1/16
CPC分类号： H04W72/1247 , H04W24/00 , H04W48/08
摘要： A method and system is disclosed for interlaced control channel. When a RAN in a wireless communication system operating at least according to IS-856 determines that a delay condition exists in the transmission of control packets to access terminals, it invokes interlacing of time slots bearing control-channel data. By so doing, control packets are transmitted in interlaced fashion, thereby reducing delay in transmission compared with sequential transmission of control packets. A delay condition could correspond to a measured delay exceeding a threshold delay, a predicted delay (e.g., based on queue occupancy) exceeding a threshold number, or the number of access terminals eligible to receive control messages during a particular time interval exceeding a different threshold number. The RAN may monitor transmission delay of control packets on a per-control-channel-cycle basis, and apply interlaced transmission of control packet only during those control-channel cycles for which a delay condition has been determined to exist.
摘要翻译： 公开了用于隔行控制信道的方法和系统。 当至少根据IS-856操作的无线通信系统中的RAN确定在向接入终端发送控制分组时存在延迟条件时，它调用带有控制信道数据的时隙的交织。 通过这样做，以隔行方式发送控制分组，从而相比于控制分组的顺序发送减少传输延迟。 延迟条件可以对应于超过阈值延迟的测量延迟，超过阈值的预测延迟（例如，基于队列占用），或者在特定时间间隔期间有资格接收控制消息的接入终端的数量超过不同的阈值 数。 RAN可以在每个控制信道周期的基础上监视控制分组的传输延迟，并且仅在已经确定了延迟条件的控制信道周期中应用控制分组的隔行传输。
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公开(公告)号：US08060128B1
公开(公告)日：2011-11-15
申请号：US12405344
申请日：2009-03-17
CPC分类号： H04W52/221
摘要： A method and system is disclosed for intelligent power control in a wireless communication system. In accordance with an example embodiment, a first device will operate in a dynamic-power state in which it responds to each power-increment command and power-decrement command received from a second device by incrementing or decrementing transmission power on an air interface. While operating in the dynamic-power state, the first device will recognize when a first threshold number of alternating power-increment and power-decrement commands have been received, and responsively will transition to operating in a steady-power state in which it no longer increments or decrements transmission power in response to power-control commands from the second device. While operating in the steady-power state, the first device will recognize when receives a particular sequence of power-control commands from the first device, and based at least on the recognition will transition to operating in the dynamic power state.
摘要翻译： 公开了一种用于无线通信系统中的智能功率控制的方法和系统。 根据示例性实施例，第一设备将在动态功率状态下工作，其中它通过增加或减少空中接口上的传输功率来响应从第二设备接收的每个功率递增命令和功率递减命令。 当在动态功率状态下工作时，第一设备将识别何时已经接收到第一阈值数量的交流功率增量和功率递减命令，并且响应地将转换到在其不再是的稳定功率状态 响应于来自第二设备的功率控制命令增加或减少发射功率。 当在稳定功率状态下工作时，第一设备将识别何时从第一设备接收到特定的功率控制命令序列，并且至少基于识别将转换到在动态功率状态下操作。
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