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1.发明授权Frequency re-used and time-shared cellular communication system having multiple radio communication systems 失效具有多个无线电通信系统的频率再次使用和时间共享的蜂窝通信系统
公开(公告)号：US5999818A
公开(公告)日：1999-12-07
申请号：US692678
申请日：1996-08-06
IPC分类号： H04W4/06 , H04W16/00 , H04W16/14 , H04W52/02 , H04W72/04 , H04W74/04 , H04W84/04 , H04W88/10 , H04J3/16
CPC分类号： H04W28/16 , H04W16/00 , H04W16/14 , H04W4/06 , H04W52/0206 , H04W74/04 , H04W84/042 , H04W88/10
摘要： A method and apparatus for multiplexing time-shared base stations between a plurality of radio communication systems in a cellular communication system. Each radio communication system in the cellular system is assigned a limited unique set of frequencies for communication therein. Base stations in the cellular system are synchronized to a common time base and frequency reuse is achieved by time-sharing the frequencies via allocated time slots. Base stations activated to communicate in a first radio communication system and using the same frequencies that may interfere with each other are activated in the first system only during selected time intervals while same-frequency base stations nearby are deactivated in the first system. The deactivated base stations are then in turn activated in the first system while previously activated same-frequency base stations nearby are deactivated. Enhanced base station efficiency is achieved using the present inventive method by activating the time sharing base stations to communicate in one or more additional radio communication systems during periods when the base stations are deactivated in the first system. The radio communication systems can use differing numbers of assigned frequencies having differing time slot durations. The transmission periods used by each system may be mutually exclusive, or may overlap.
摘要翻译： 一种用于在蜂窝通信系统中的多个无线电通信系统之间复用时间共享基站的方法和装置。 蜂窝系统中的每个无线电通信系统被分配有限的唯一的一组频率用于在其中进行通信。 蜂窝系统中的基站被同步到公共时基，并且通过经由分配的时隙对频率进行时分，来实现频率重用。 激活在第一无线电通信系统中通信并且使用可能彼此干扰的相同频率的基站仅在选定的时间间隔期间在第一系统中被激活，而在第一系统中的相邻频率基站被去激活。 然后在第一系统中激活停用的基站，同时先前激活的邻近的同频基站被去激活。 在基站在第一系统中被停用的时段期间，通过激活时间共享基站在一个或多个附加的无线电通信系统中通信来实现增强的基站效率。 无线电通信系统可以使用具有不同时隙持续时间的不同数量的分配频率。 每个系统使用的传输周期可以是互斥的，或者可以重叠。
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公开(公告)号：US08199779B2
公开(公告)日：2012-06-12
申请号：US13021627
申请日：2011-02-04
申请人： Pranesh Sinha , Sharon Akler , Yair Bourlas , Timothy Leo Gallagher , Sheldon L. Gilbert , Stephen C. Pollmann , Frederick W. Price , Blaine C. Readler , John Wiss , Eli Arviv
发明人： Pranesh Sinha , Sharon Akler , Yair Bourlas , Timothy Leo Gallagher , Sheldon L. Gilbert , Stephen C. Pollmann , Frederick W. Price , Blaine C. Readler , John Wiss , Eli Arviv
摘要： Apparatus, system and method for synchronizing one or more clocks across a communication link. A slave clock may be synchronized to a master clock by means of a synchronization signal sent from the master to the slave clock side of the link. The synchronization signal may be an expected signal pattern sent at intervals expected by the slave side. The slave clock may correlate received signals with a representation of the expected synchronization signal to produce a correlation sample sequence at a first sample rate which is related as n times the slave clock rate. The synchronization signal receipt time indicated by the correlation sample sequence may be refined by interpolating the correlation sample sequence around a best correlation sample to locate a best interpolation at an interpolation resolution smaller than the sample resolution. The best interpolation may in turn be further refined by estimating between interpolator outputs adjacent to the best interpolation output. The synchronization signal receipt time thus determined is compared to the expected time based upon the slave clock, which is adjusted until the times match. After initialization, all slave clock errors are preferably accumulated to prevent long-term slip between the slave and master clocks. Formerly independent master and slave clocks synchronized across the communication link constitute a noncommon clock which may be compared on each side of the link to secondary independent clocks, and the secondary independent clocks may then be separately synchronized by adjusting one to have the same difference from its local noncommon clock as the secondary clock on the other side of the link has from its local noncommon clock.
摘要翻译： 用于在通信链路上同步一个或多个时钟的装置，系统和方法。 从时钟可以通过从主机发送到链路的从时钟侧的同步信号与主时钟同步。 同步信号可以是以从机侧预期的间隔发送的预期信号模式。 从时钟可以将接收的信号与预期同步信号的表示相关，以产生与从时钟速率的n倍相关的第一采样率的相关采样序列。 通过相关采样序列指示的同步信号接收时间可以通过围绕最佳相关样本内插相关采样序列来精细化，以便以小于样本分辨率的插值分辨率定位最佳内插。 可以通过在与最佳内插输出相邻的内插器输出之间进行估计来进一步改进最佳内插。 将这样确定的同步信号接收时间与基于从时钟的预期时间进行比较，该从时钟被调整直到时间匹配。 在初始化之后，优选地累积所有从时钟错误以防止从机和主时钟之间的长期滑动。 通过通信链路同步的以前独立的主，从时钟构成了一个非常见的时钟，可以在链路的每一侧与次级独立时钟进行比较，然后可以通过调整二次独立时钟来与其独立时钟相同的差异 本地非通用时钟作为链路另一侧的辅助时钟源自其本地非通用时钟。
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3.发明申请公开(公告)号：US20100150094A1
公开(公告)日：2010-06-17
申请号：US12645947
申请日：2009-12-23
IPC分类号： H04W72/00
CPC分类号： H04W72/0413 , H04L5/0064 , H04L5/0092 , H04L2012/5607 , H04L2012/561 , H04Q11/0478 , H04W4/06 , H04W8/24 , H04W28/0268 , H04W28/06 , H04W28/14 , H04W56/0005 , H04W60/00 , H04W72/0406 , H04W72/042 , H04W72/044 , H04W72/0453 , H04W72/048 , H04W72/10 , H04W74/06
摘要： A method and apparatus for requesting and allocating bandwidth in a broadband wireless communication system. The inventive method and apparatus includes a combination of techniques that allow a plurality of CPEs to communicate their bandwidth request messages to respective base stations. One technique includes a “polling” method whereby a base station polls CPEs individually or in groups and allocates bandwidth specifically for the purpose of allowing the CPEs to respond with bandwidth requests. The polling of the CPEs by the base station may be in response to a CPE setting a “poll-me bit” or, alternatively, it may be periodic. Another technique comprises “piggybacking” bandwidth requests on bandwidth already allocated to a CPE. In accordance with this technique, currently active CPEs request bandwidth using previously unused portions of uplink bandwidth that is already allocated to the CPE. The CPE is responsible for distributing the allocated uplink bandwidth in a manner that accommodates the services provided by the CPE. By using a combination of bandwidth allocation techniques, the present invention advantageously makes use of the efficiency benefits associated with each technique
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4.发明授权Systems and methods for implementing double wide channels in a communication system 有权在通信系统中实现双宽通道的系统和方法公开(公告)号：US07672268B2
公开(公告)日：2010-03-02
申请号：US11156045
申请日：2005-06-17
申请人： Kenneth Stanwood , Timothy Leo Gallagher , Sheldon L. Gilbert , Yair Bourlas , Charles Bergan , Sam A. Liu , Darren Smith
发明人： Kenneth Stanwood , Timothy Leo Gallagher , Sheldon L. Gilbert , Yair Bourlas , Charles Bergan , Sam A. Liu , Darren Smith
CPC分类号： H04W28/20
摘要： In a system utilizing double wide communication channels, if a particular CPE requires a sustained rate that is greater than the bandwidth of a single channel, data to and from the CPE may be split across Channels A and B. Also, when the bandwidth requirements of a particular CPE peaks at a data rate greater than the capacity of a single channel, the CPE's data may be split across the two channels. In one embodiment, a single-wide CPE may communicate with the base station without knowing that it is communicating with a base station configured to communicate using a double wide channel.
摘要翻译： 在使用双宽通信信道的系统中，如果特定的CPE需要比单个信道的带宽更长的持续速率，那么到CPE之间的数据可能会跨越信道A和B分裂。另外，当带宽要求 特定的CPE以大于单个信道的容量的数据速率峰值，CPE的数据可以跨越两个信道被分离。 在一个实施例中，单宽CPE可以与基站通信，而不知道它正在与被配置为使用双宽信道通信的基站通信。
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公开(公告)号：US07583705B2
公开(公告)日：2009-09-01
申请号：US11170391
申请日：2005-06-29
申请人： Pranesh Sinha , Sharon Akler , Yair Bourlas , Timothy Leo Gallagher , Sheldon L. Gilbert , Stephen C. Pollmann , Frederick W. Price , Blaine C. Readler , John Wiss , Eli Arviv
发明人： Pranesh Sinha , Sharon Akler , Yair Bourlas , Timothy Leo Gallagher , Sheldon L. Gilbert , Stephen C. Pollmann , Frederick W. Price , Blaine C. Readler , John Wiss , Eli Arviv
摘要： One or more clocks are synchronized across a communication link using a synchronization signal sent from a master to a slave clock. The synchronization signal may be an expected signal pattern sent at intervals expected by the slave. The slave clock may correlate received signals with a representation of the expected synchronization signal to produce a correlation sample sequence at a first sample rate. The synchronization signal receipt time is compared to the expected time and the slave clock is adjusted until the times match. Master and slave clocks synchronized across the communication link constitute a noncommon clock which may be compared on each side of the link to secondary independent clocks. The secondary independent clocks may be separately synchronized by adjusting one to have the same difference from its local noncommon clock as the secondary clock on the other side of the link has from its local noncommon clock.
摘要翻译： 使用从主机发送到从时钟的同步信号，通过通信链路同步一个或多个时钟。 同步信号可以是以从站所预期的间隔发送的预期信号模式。 从时钟可以将接收的信号与预期同步信号的表示相关，以产生第一采样率的相关采样序列。 将同步信号接收时间与预期时间进行比较，并调整从时钟直到时间匹配。 通过通信链路同步的主和从时钟构成了一个非常见的时钟，可以在链路的每一侧与次级独立时钟进行比较。 辅助独立时钟可以通过调整一个来独立同步，以使其与本地非常见时钟具有相同的差异，因为链路另一侧的辅助时钟与其本地非常见时钟相同。
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6.发明申请公开(公告)号：US20090185532A1
公开(公告)日：2009-07-23
申请号：US12414363
申请日：2009-03-30
IPC分类号： H04W4/00
CPC分类号： H04W72/1252 , H04W28/22 , H04W72/1257 , H04W76/10 , H04W76/30
摘要： The invention relates to communication systems and to systems and methods for implementing adaptive call admission control (CAC) in such systems. Adaptive call admission control can determine what CPE to base station calls (connections) are allowed at any given time. CAC, coupled with precedence, can further determine what connections are suspended if less bandwidth is available than is currently committed. Multiple techniques are disclosed to select connections for suspension. These techniques include suspending enough connections through the affected CPE until there is enough bandwidth to meet the remaining commitment, randomly (or in a round robin fashion) choosing connection to suspend from the entire set of connection, and using precedence priority levels.
摘要翻译： 本发明涉及通信系统以及用于在这样的系统中实现自适应呼叫许可控制（CAC）的系统和方法。 自适应呼叫准入控制可以确定在任何给定时间允许基站呼叫（连接）的CPE。 CAC，加上优先级，可以进一步确定如果可用带宽比当前提交的带宽少，连接被挂起。 公开了多种技术来选择用于暂停的连接。 这些技术包括通过受影响的CPE暂停足够的连接，直到有足够的带宽来满足剩余的承诺，从而选择连接从整个连接集中挂起并使用优先级优先级的随机（或循环方式）。
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7.发明授权
公开(公告)号：US5297144A
公开(公告)日：1994-03-22
申请号：US643875
申请日：1991-01-22
IPC分类号： H04L12/28 , H04L12/403 , H04L12/56 , H04J3/16
摘要： A wireless data communications network having a number of users communicating from individual remote stations to a central station over a single optical-infrared channel utilizing a two-stage noncontention-based multiple-access communications protocol. During the first stage of the reservation-based polling protocol, the central station provides a synchronization signal to the remote stations to define the start of a "reservation request period," and allocates fixed time slots during which any remote station having a data message to transmit may request access and reserve a portion of the channel for their data messages. During the second stage or "polled data transfer period," the central station polls only those remote stations that have a data message to transmit and have requested access to the channel. In response to the poll, the polled remote stations transmit their data message in their previously-reserved data slots. If desired, the central station may also return an acknowledgement signal to the remote stations upon successful reception of each data message.
摘要翻译： 一种无线数据通信网络，其具有多个用户，通过使用基于两阶段非接触的多址通信协议，通过单个光学红外信道从各个远程站到中心站进行通信。 在基于预约的轮询协议的第一阶段期间，中心站向远程站提供同步信号以定义“预留请求周期”的开始，并且分配固定的时隙，在该时间段期间，具有数据消息的任何远程站到 发送可以请求访问并保留信道的一部分用于其数据消息。 在第二阶段或“轮询数据传输周期”期间，中心局仅轮询那些具有要发送的数据消息并已请求访问该信道的远程站。 响应于轮询，被轮询的远程站在其先前保留的数据时隙中发送其数据消息。 如果需要，在成功接收每个数据消息后，中心站还可以向远程站返回确认信号。
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8.发明授权公开(公告)号：US08213359B2
公开(公告)日：2012-07-03
申请号：US12414363
申请日：2009-03-30
IPC分类号： H04W4/00
CPC分类号： H04W72/1252 , H04W28/22 , H04W72/1257 , H04W76/10 , H04W76/30
摘要： The invention relates to communication systems and to systems and methods for implementing adaptive call admission control (CAC) in such systems. Adaptive call admission control can determine what CPE to base station calls (connections) are allowed at any given time. CAC, coupled with precedence, can further determine what connections are suspended if less bandwidth is available than is currently committed. Multiple techniques are disclosed to select connections for suspension. These techniques include suspending enough connections through the affected CPE until there is enough bandwidth to meet the remaining commitment, randomly (or in a round robin fashion) choosing connection to suspend from the entire set of connection, and using precedence priority levels.
摘要翻译： 本发明涉及通信系统以及用于在这样的系统中实现自适应呼叫许可控制（CAC）的系统和方法。 自适应呼叫准入控制可以确定在任何给定时间允许基站呼叫（连接）的CPE。 CAC，加上优先级，可以进一步确定如果可用带宽比当前提交的带宽少，连接被挂起。 公开了多种技术来选择用于暂停的连接。 这些技术包括通过受影响的CPE暂停足够的连接，直到有足够的带宽来满足剩余的承诺，从而选择连接从整个连接集中挂起并使用优先级优先级的随机（或循环方式）。
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9.发明申请Method and System for Reducing Channel Interference in a Frame-Synchronized Wireless Communication System 审中-公开减少帧同步无线通信系统中信道干扰的方法和系统公开(公告)号：US20110077034A1
公开(公告)日：2011-03-31
申请号：US12958698
申请日：2010-12-02
IPC分类号： H04B15/00
摘要： Base stations having potentially interfering terminal stations that are geographically located on the same or similar diagonal or Line of Sight (relative to the base station) operate on a first set of time frames (e.g., “even” time frames). Similarly, base stations having potentially interfering terminal stations that are not geographically located on the same or similar diagonals operate on a second set of time frames (e.g., “odd” time frames). By alternating in their use of the even and odd frames, the potential for co-channel interference between terminal stations is minimized. Systems and methods are disclosed which reduce co-channel and adjacent channel interference between terminal stations of different cells as well as adjacent channel interference between terminal stations of adjacent cells. The methods and systems so described can be used during the deployment or expansion of a communication system in a region.
摘要翻译： 具有地理上位于相同或相似的对角线或视线（相对于基站）的潜在干扰终端站的基站在第一组时间帧（例如“偶数”时间帧）上操作。 类似地，具有不在地理上位于相同或相似对角线上的潜在干扰终端站的基站在第二组时间帧（例如，“奇数”时间帧）上操作。 通过交替使用偶数和奇数帧，终端之间的同信道干扰的可能性被最小化。 公开了减少不同小区的终端之间的同信道和相邻信道干扰以及相邻小区的终端之间的相邻信道干扰的系统和方法。 所描述的方法和系统可以在部署或扩展区域内的通信系统时使用。
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10.发明授权Adaptive time division duplexing method and apparatus for dynamic bandwidth allocation within a wireless communication system 有权用于无线通信系统内的动态带宽分配的自适应时分双工方法和装置公开(公告)号：US07486639B2
公开(公告)日：2009-02-03
申请号：US11114662
申请日：2005-04-26
IPC分类号： H04G7/00
CPC分类号： H04W72/0413 , H04L5/0064 , H04L5/0092 , H04L2012/5607 , H04L2012/561 , H04Q11/0478 , H04W4/06 , H04W8/24 , H04W28/0268 , H04W28/06 , H04W28/14 , H04W56/0005 , H04W60/00 , H04W72/0406 , H04W72/042 , H04W72/044 , H04W72/0453 , H04W72/048 , H04W72/10 , H04W74/06
摘要： An adaptive time division duplexing (ATDD) method and apparatus for duplexing transmissions on a communication link in wireless communication systems. Communication link efficient is enhanced by dynamically adapting to the uplink and downlink bandwidth requirements of the communication channels. Time slots are flexibly and dynamically allocated for uplink or downlink transmissions depending upon the bandwidth needs of a channel. Communication link bandwidth requirements are continuously monitored using sets of predetermined bandwidth requirement parameters. Communication channels are configured to have either symmetric or asymmetric uplink/downlink bandwidths depending upon the needs of the channel. Channel bandwidth asymmetry can be configured alternatively in favor of the uplink transmissions (i.e., more time slots are allocated for uplink transmissions than for downlink transmissions) or in favor of the downlink transmissions (i.e., more time slots are allocated for downlink transmissions than for uplink transmissions). A myriad of time slot allocation schemes are possible. One simplified time slot allocation scheme uses a “frame-based” approach. A preferred channel bandwidth analysis technique is disclosed which monitors and updates bandwidth requirement parameters associated with communication sessions, base stations and cell cluster controllers. In accordance with this technique, a communication session is preferably assigned both an “initial” and an “actual” set of bandwidth parameters.
摘要翻译： 一种用于在无线通信系统中的通信链路上双工传输的自适应时分双工（ATDD）方法和装置。 通过动态地适应通信信道的上行链路和下行链路带宽需求来增强通信链路的有效性。 根据信道的带宽需求，时隙被灵活地动态分配用于上行链路或下行链路传输。 使用预定带宽需求参数的集合来连续监视通信链路带宽要求。 根据信道的需要，通信信道被配置为具有对称或不对称的上行链路/下行链路带宽。 信道带宽不对称可以配置为有利于上行链路传输（即，为上行链路传输分配更多的时隙而不是针对下行链路传输）或有利于下行链路传输（即，为下行链路传输分配更多的时隙而不是上行链路 传输）。 无数次时隙分配方案是可能的。 一个简化的时隙分配方案使用“基于帧”的方法。 公开了一种优选的信道带宽分析技术，其监测和更新与通信会话，基站和小区集群控制器相关联的带宽需求参数。 根据该技术，通信会话优选地分配“初始”和“实际”带宽参数集合。
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