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    • 4. 发明申请
    • Method and apparatus for cell-site ARQ generation under softer handoff conditions
    • 在较软的切换条件下进行细胞遗传ARQ生成的方法和装置
    • US20050181834A1
    • 2005-08-18
    • US11017338
    • 2004-12-20
    • Wanshi ChenRath VannithambyShiau-He Shawn TsaiYoung YoonAnthony SoongTao Wu
    • Wanshi ChenRath VannithambyShiau-He Shawn TsaiYoung YoonAnthony SoongTao Wu
    • H04L1/00H04L1/18H04W36/18H04Q7/20
    • H04L1/1845H04L1/189H04L2001/0093H04W36/18
    • A base station generates per-cell ACK/NACK responses rather than per-sector ACK/NACK responses. For a given mobile station signal received in softer handoff at two of the base station's sectors, the base station generates an ACK response if at least one of the soft handoff sectors correctly receives the signal, and otherwise generates a NACK response. Alternatively, the base station can combine the softer handoff signals and generate ACK/NACK responses based on whether the combined signal is correctly received. Since only one set of ACK/NACK responses are generated for all of the softer handoff sectors, the base station can use the forward link in just one softer handoff sector to send the ACK/NACK responses to the mobile station, consuming fewer forward link transmit resources at the base station. Or, the base station can send the same ACK/NACK responses from two or more softer handoff sectors, thus allowing diversity combining of the ACK/NACK responses at the mobile station.
    • 基站产生每小区ACK / NACK响应而不是每扇区ACK / NACK响应。 对于在两个基站扇区的较软切换中接收到的给定移动站信号,如果软切换扇区中的至少一个正确地接收到该信号,则基站产生ACK响应,否则产生NACK响应。 或者,基站可以组合较软切换信号,并且基于组合信号是否被正确接收来生成ACK / NACK响应。 由于仅为所有更软切换扇区生成一组ACK / NACK响应,所以基站可以在仅一个较软切换扇区中使用前向链路来向移动台发送ACK / NACK响应,从而消耗较少的前向链路传输 资源在基站。 或者,基站可以从两个或更多个更软切换扇区发送相同的ACK / NACK响应,从而允许在移动站处的ACK / NACK响应的分集组合。
    • 5. 发明授权
    • Method and apparatus to improve communication performance in ARQ networks
    • 提高ARQ网络通信性能的方法和装置
    • US07697469B2
    • 2010-04-13
    • US11018773
    • 2004-12-21
    • Tao WuWanshi ChenYoung YoonJonas WiorekAnthony C. K. Soong
    • Tao WuWanshi ChenYoung YoonJonas WiorekAnthony C. K. Soong
    • H04J3/16
    • H04L1/1812H04L1/0009H04L1/1867H04L41/0816H04L41/0886H04W24/00H04W28/18H04W52/04
    • A wireless communication network improves reverse link communication performance by changing one or more Automatic Repeat Request (ARQ) control settings as a function of measured or estimated reverse link loading. Control settings can be changed on a per-sector basis, allowing consideration of different loading conditions in different radio sectors of the network. Further, control settings can be changed for individual mobile stations, or selected groups of mobile stations, allowing different ARQ controls to be used for different mobile stations. By way of non-limiting example, a control circuit in a base station controller can be configured to take advantage of light reverse link loading conditions in a given radio sector by changing the ARQ control parameter(s) used for one or more mobile stations operating in that sector so that fewer ARQ retransmissions are required for those mobile stations to transmit reverse link data to the network.
    • 无线通信网络通过改变作为测量或估计的反向链路负载的函数的一个或多个自动重传请求(ARQ)控制设置来改善反向链路通信性能。 可以在每个扇区的基础上改变控制设置,允许考虑网络不同无线电扇区中的不同负载条件。 此外,可以针对各个移动站或选定的移动站组来改变控制设置,允许不同的ARQ控制被用于不同的移动站。 作为非限制性示例,基站控制器中的控制电路可以被配置为通过改变用于一个或多个移动站操作的ARQ控制参数来利用给定无线电扇区中的轻反向链路负载条件 在该扇区中,因此这些移动站需要较少的ARQ重传来向网络发送反向链路数据。
    • 7. 发明授权
    • Distributed transmit diversity in a wireless communication network
    • 无线通信网络中的分布式发射分集
    • US07787552B2
    • 2010-08-31
    • US11106092
    • 2005-04-14
    • Wanshi ChenYoung C. Yoon
    • Wanshi ChenYoung C. Yoon
    • H04L1/02
    • H04L1/04H04L1/0618
    • A wireless communication network is configured to provide distributed diversity transmissions, wherein different diversity-coded versions of the same information signal are transmitted from each of two or more network sectors. The diversity-coded versions of the information signal are based on space-time or space-frequency codes, and the information signal may comprise a dedicated channel signal targeted to an individual user or a broadcast signal targeted to one or more users. Thus, spaced-apart network transmitters, which may be located at the same cell site, or at different cell sites, are configured to transmit diversity-coded versions of a given information signal and, in this manner, the advantages of space-time and/or space frequency transmission coding may be applied across multiple sectors of a communication network. Such transmissions may be used to improve soft and softer handoff reception of dedicated channel signals, and to improve reception of Broadcast-Multicast Services (BCMCS) signals, or the like.
    • 无线通信网络被配置为提供分布式分集传输,其中从两个或更多个网络扇区中的每一个发送相同信息信号的不同分集编码版本。 信息信号的分集编码版本基于时空或空间频率代码,并且信息信号可以包括针对单个用户的专用信道信号或针对一个或多个用户的广播信号。 因此,可以位于相同小区站点或不同小区站点的间隔开的网络发射机被配置为发送给定信息信号的分集编码版本,并且以这种方式,具有时空和 /或空间频率传输编码可以应用于通信网络的多个扇区。 这样的传输可以用于改善专用信道信号的软和更软切换​​接收,并且改善广播 - 组播服务(BCMCS)信号的接收等。
    • 9. 发明授权
    • Power-based rate adaptation of wireless communication channels
    • 无线通信信道的基于功率的速率调整
    • US07573856B2
    • 2009-08-11
    • US10721951
    • 2003-11-25
    • Wanshi ChenReza ShahidiAlpaslan SavasLong DuanJoakim Hulten
    • Wanshi ChenReza ShahidiAlpaslan SavasLong DuanJoakim Hulten
    • H04W4/00
    • H04W28/22H04L1/0002H04L1/0017H04L1/0023H04L5/023H04L5/1446H04W52/04H04W52/26
    • A radio base station (RBS) provides dynamic rate adaptation for rate-adjustable communication channels used to transmit information to remote mobile stations based on monitoring transmit power information associated with those channels. For a given channel, the RBS tracks an average channel power on a per transmit frame basis and compares the average to first and second rate adjustment thresholds, which comparisons trigger downward or upward rate adjustments. Similar operation also may be based on averaging the power control commands returned by the mobile station, which indicate whether the channel's power as received by the mobile station is or is not sufficient with respect to a desired signal quality. This method thus provides a mechanism for rapid rate adaptation without requiring explicit rate control signaling from the mobile stations.
    • 无线电基站(RBS)基于监视与这些信道相关联的发射功率信息,为用于向远程移动站发送信息的速率可调节通信信道提供动态速率适配。 对于给定的信道,RBS在每个发送帧的基础上跟踪平均信道功率,并将平均值与第一和第二速率调整阈值进行比较,该比较触发向下或向上速率调整。 类似的操作也可以基于平均由移动站返回的功率控制命令,其指示由移动站接收的信道的功率是否相对于期望的信号质量还不足够。 因此,该方法提供了用于快速速率适配的机制,而不需要来自移动台的明确的速率控制信令。