公开(公告)号：US20100159991A1

公开(公告)日：2010-06-24

申请号：US12655042

申请日：2009-12-21

申请人： I-Kang Fu ,  Chao-Chin Chou ,  Yih-Shen Chen

发明人： I-Kang Fu ,  Chao-Chin Chou ,  Yih-Shen Chen

IPC分类号： H04W4/12

CPC分类号： H04W24/02 ,  H04W16/32 ,  H04W36/22 ,  H04W36/38 ,  H04W84/045

摘要： A Femto Base Station (FBS) includes a communication functionality and a reliability functionality. A control entity within the reliability functionality detects an FBS reliability compromising event (for example, an unscheduled loss of external power to the FBS). As a result of detecting the FBS reliability compromising event, the control entity sends a message (an “FBS Reliability Compromising Event Compensation Message” or “FBSRCECM”) to the communication functionality. The FBSRCECM initiates an action that compensates for the FBS reliability compromising event. In many examples, the action is the initiating of a handover from the FBS to another base station. The reliability functionality typically includes a rechargeable battery that powers the FBS for a time until the handover is completed gracefully. By performing a graceful handover, cellular network reliability is improved as compared to situations in which a conventional FBS simply stops working and connections handled by the conventional FBS are broken.

摘要翻译： 毫微微基站（FBS）包括通信功能和可靠性功能。 可靠性功能内的控制实体检测到FBS可靠性损害事件（例如，对FBS的外部功率的非计划丢失）。 作为检测FBS可靠性危及事件的结果，控制实体向通信功能发送消息（“FBS可靠性妥协事件补偿消息”或“FBSRCECM”）。 FBSRCECM启动一项补偿FBS可靠性破坏事件的动作。 在许多示例中，动作是发起从FBS到另一个基站的切换。 可靠性功能通常包括为FBS供电一段时间的可充电电池，直到切换顺利完成。 通过执行优雅的切换，与常规FBS简单停止工作并且由传统FBS处理的连接断开的情况相比，提高了蜂窝网络的可靠性。

公开(公告)号：US08804658B2

公开(公告)日：2014-08-12

申请号：US12589374

申请日：2009-10-21

申请人： Yih-Shen Chen ,  Chao-Chin Chou ,  I-Kang Fu

发明人： Yih-Shen Chen ,  Chao-Chin Chou ,  I-Kang Fu

IPC分类号： H04W4/00 ,  H04W36/00

CPC分类号： H04W36/0061 ,  H04W36/0066

摘要： Methods for a mobile station to handover between IEEE 802.16e and 802.16m systems are provided. The mobile station is served by an IEEE 802.16e-only base station or an IEEE 802.16e zone of a 16e/16m-conexistence base station. In a zone-switch based handover procedure, the mobile station first performs an IEEE 802.16e legacy handover procedure such that the mobile station handovers from the serving base station to an IEEE 802.16e zone of a target base station. The mobile station then performs a zone-switch procedure such that the mobile station switches from the IEEE 802.16e zone to an IEEE 802.16m zone of the target base station. In a direct handover procedure, the mobile station performs an IEEE 802.16m handover procedure such that the mobile station handovers from the serving base station to the IEEE 802.16m zone of the target base station directly.

摘要翻译： 提供了移动台在IEEE 802.16e和802.16m系统之间切换的方法。 移动台由IEEE 802.16e专用基站或16e / 16m共存基站的IEEE 802.16e区域服务。 在基于区切换的切换过程中，移动台首先执行IEEE 802.16e传统切换过程，使得移动台从服务基站切换到目标基站的IEEE 802.16e区域。 然后，移动台执行区域切换过程，使得移动站从目标基站的IEEE 802.16e区切换到IEEE 802.16m区。 在直接切换过程中，移动台执行IEEE 802.16m切换过程，使得移动台直接从目标基站的服务基站切换到IEEE 802.16m区域。

公开(公告)号：US08369241B2

公开(公告)日：2013-02-05

申请号：US12387380

申请日：2009-04-30

申请人： Chao-Chin Chou ,  Yih-Shen Chen ,  I-Kang Fu

发明人： Chao-Chin Chou ,  Yih-Shen Chen ,  I-Kang Fu

IPC分类号： H04B7/216

CPC分类号： H04J3/0682 ,  H04W74/008

摘要： A fast feedback mechanism is provided in a contention-based ranging procedure. A Subscriber Station (SS) initializes a ranging procedure by sending a ranging code on a selected ranging opportunity for resource access to a Base Station (BS) on a shared ranging channel in a previous uplink frame. The SS also starts a time associated with the ranging code. In response to all received ranging opportunities, the BS broadcasts an acknowledgement (ACK) in a subsequent downlink frame. The ACK comprises a reception status message that indicates the decoding status of the ranging opportunities. With the novel fast feedback mechanism, when ranging collision or failure occurs, upon receiving the reception status report, the SS will proceed with the next round of contention without continuing wait for the entire timeout period. As a result, the total latency due to the ranging collision or failure is reduced.

公开(公告)号：US20090310563A1

公开(公告)日：2009-12-17

申请号：US12456006

申请日：2009-06-09

申请人： Chao-Chin Chou ,  I-Kang Fu ,  Yih-Shen Chen

发明人： Chao-Chin Chou ,  I-Kang Fu ,  Yih-Shen Chen

IPC分类号： H04W36/00 ,  H04W4/00

CPC分类号： H04W36/12 ,  H04L5/0007 ,  H04L27/0006 ,  H04L27/2618 ,  H04L27/2655 ,  H04W36/0027 ,  H04W36/0072 ,  H04W36/0088 ,  H04W36/08 ,  H04W36/18 ,  H04W48/16

摘要： A comprehensive solution is provided for multi-carrier scanning and handover operations in OFDM wireless systems. A multi-carrier scanning is any scanning operation that involves multi-carrier radio frequency carriers. In one embodiment, a mobile station communicates with a serving base station over a primary carrier, and performs scanning over one or more determined carriers. A multi-carrier handover is any handover operation that involves multiple radio frequency carriers. In a first embodiment, a break-before-entry (BBE) handover procedure with fast synchronization is provided. In a second embodiment, an entry-before-break (EBB) handover procedure through unavailable intervals is provided. In a third embodiment, EBB handover procedures for both inter-FA and intra-FA using multiple carriers are provided. Finally, in a fourth embodiment, intra-BS handover procedures are provided. The multi-carrier handover procedures may be applied to 2-to-2 or N-to-N carriers handover situation. The overall scanning time and handover interruption time may be reduced through the provided procedures.

摘要翻译： 为OFDM无线系统中的多载波扫描和切换操作提供了全面的解决方案。 多载波扫描是涉及多载波射频载波的任何扫描操作。 在一个实施例中，移动台通过主载波与服务基站进行通信，并对一个或多个确定的载波执行扫描。 多载波切换是涉及多个射频载波的任何切换操作。 在第一实施例中，提供了具有快速同步的中断前进（BBE）切换过程。 在第二实施例中，提供了通过不可用间隔的切入前（EBB）切换过程。 在第三实施例中，提供了使用多个载波的FA间和FA内的EBB切换程序。 最后，在第四实施例中，提供了BS内的切换过程。 多载波切换过程可以应用于2对2或N到N个载波切换情况。 通过提供的程序可以减少整个扫描时间和切换中断时间。

公开(公告)号：US20100111029A1

公开(公告)日：2010-05-06

申请号：US12655835

申请日：2010-01-08

申请人： Chao-Chin Chou ,  Yih-Shen Chen ,  I-Kang Fu

发明人： Chao-Chin Chou ,  Yih-Shen Chen ,  I-Kang Fu

IPC分类号： H04W72/04

CPC分类号： H04J3/0682

摘要： A fast feedback mechanism is provided in a contention-based data transmission procedure. A Subscriber Station (SS) transmits a data burst to a base station (BS) using a selected data grant in a previous uplink (UL) frame. The SS also starts a timer associated with the data transmission. The data grant is selected from a plurality of data grants granted by the BS for contention-based access. In response to all received data grants in the previous UL frame, the BS broadcasts an acknowledgement (ACK) in a subsequent downlink (DL) frame. The ACK comprises a reception status message that indicates the detection result of the data grants. With the novel fast feedback mechanism, when data collision occurs, upon receiving the detection result indicator, the SS proceeds by retransmitting data without continuing wait for the entire timeout period. As a result, the total latency due to the data collision is reduced.

摘要翻译： 在基于争用的数据传输过程中提供快速反馈机制。 订户站（SS）使用先前的上行链路（UL）帧中的所选择的数据许可将数据突发发送到基站（BS）。 SS还启动与数据传输相关联的定时器。 数据授权是从基于争用的访问的BS授予的多个数据授权中选择的。 响应于先前UL帧中的所有接收到的数据许可，BS在随后的下行链路（DL）帧中广播确认（ACK）。 ACK包括指示数据授权的检测结果的接收状态消息。 利用新颖的快速反馈机制，当发生数据冲突时，在接收到检测结果指示符后，SS通过重传数据继续等待整个超时周期。 结果，减少了由于数据冲突引起的总延迟。

公开(公告)号：US08676208B2

公开(公告)日：2014-03-18

申请号：US12456006

申请日：2009-06-09

申请人： Chao-Chin Chou ,  I-Kang Fu ,  Yih-Shen Chen

发明人： Chao-Chin Chou ,  I-Kang Fu ,  Yih-Shen Chen

IPC分类号： H04W4/00 ,  H04W36/00

CPC分类号： H04W36/12 ,  H04L5/0007 ,  H04L27/0006 ,  H04L27/2618 ,  H04L27/2655 ,  H04W36/0027 ,  H04W36/0072 ,  H04W36/0088 ,  H04W36/08 ,  H04W36/18 ,  H04W48/16

摘要： A comprehensive solution is provided for multi-carrier scanning and handover operations in OFDM wireless systems. A multi-carrier scanning is any scanning operation that involves multi-carrier radio frequency carriers. In one embodiment, a mobile station communicates with a serving base station over a primary carrier, and performs scanning over one or more determined carriers. A multi-carrier handover is any handover operation that involves multiple radio frequency carriers. In a first embodiment, a break-before-entry (BBE) handover procedure with fast synchronization is provided. In a second embodiment, an entry-before-break (EBB) handover procedure through unavailable intervals is provided. In a third embodiment, EBB handover procedures for both inter-FA and intra-FA using multiple carriers are provided. Finally, in a fourth embodiment, intra-BS handover procedures are provided. The multi-carrier handover procedures may be applied to 2-to-2 or N-to-N carriers handover situation. The overall scanning time and handover interruption time may be reduced through the provided procedures.

摘要翻译： 为OFDM无线系统中的多载波扫描和切换操作提供了全面的解决方案。 多载波扫描是涉及多载波射频载波的任何扫描操作。 在一个实施例中，移动台通过主载波与服务基站进行通信，并对一个或多个确定的载波执行扫描。 多载波切换是涉及多个射频载波的任何切换操作。 在第一实施例中，提供了具有快速同步的中断前进（BBE）切换过程。 在第二实施例中，提供了通过不可用间隔的切入前（EBB）切换过程。 在第三实施例中，提供了使用多个载波的FA间和FA内的EBB切换程序。 最后，在第四实施例中，提供了BS内的切换过程。 多载波切换过程可以应用于2对2或N到N个载波切换情况。 通过提供的程序可以减少整个扫描时间和切换中断时间。

公开(公告)号：US20100098025A1

公开(公告)日：2010-04-22

申请号：US12589374

申请日：2009-10-21

申请人： Yih-Shen Chen ,  Chao-Chin Chou ,  I-Kang Fu

发明人： Yih-Shen Chen ,  Chao-Chin Chou ,  I-Kang Fu

IPC分类号： H04W36/00

CPC分类号： H04W36/0061 ,  H04W36/0066

摘要： Methods for a mobile station to handover between IEEE 802.16e and 802.16m systems are provided. The mobile station is served by an IEEE 802.16e-only base station or an IEEE 802.16e zone of a 16e/16m-conexistence base station. In a zone-switch based handover procedure, the mobile station first performs an IEEE 802.16e legacy handover procedure such that the mobile station handovers from the serving base station to an IEEE 802.16e zone of a target base station. The mobile station then performs a zone-switch procedure such that the mobile station switches from the IEEE 802.16e zone to an IEEE 802.16m zone of the target base station. In a direct handover procedure, the mobile station performs an IEEE 802.16m handover procedure such that the mobile station handovers from the serving base station to the IEEE 802.16m zone of the target base station directly.

摘要翻译： 提供了移动台在IEEE 802.16e和802.16m系统之间切换的方法。 移动台由IEEE 802.16e专用基站或16e / 16m共存基站的IEEE 802.16e区域服务。 在基于区切换的切换过程中，移动台首先执行IEEE 802.16e传统切换过程，使得移动台从服务基站切换到目标基站的IEEE 802.16e区域。 然后，移动台执行区域切换过程，使得移动站从目标基站的IEEE 802.16e区切换到IEEE 802.16m区。 在直接切换过程中，移动台执行IEEE 802.16m切换过程，使得移动台直接从目标基站的服务基站切换到IEEE 802.16m区域。

公开(公告)号：US20130012216A1

公开(公告)日：2013-01-10

申请号：US13540958

申请日：2012-07-03

申请人： Yih-Shen Chen ,  Chao-Chin Chou ,  Chia-Chun Hsu

发明人： Yih-Shen Chen ,  Chao-Chin Chou ,  Chia-Chun Hsu

IPC分类号： H04W72/04

CPC分类号： H04W76/12 ,  H04W8/245 ,  H04W48/12 ,  H04W88/06

摘要： A method of providing Local IP Access (LIPA) indication is proposed. In one novel aspect, an enhanced cell selection method is proposed using LIPA capability information. Based on LIPA capability related information, a UE is able to prioritize LIPA-capable cells and establish a corresponding packet data network (PDN) connection accordingly. In a first embodiment, LIPA information is statically configured in the UE. In a second embodiment, LIPA information is informed to the UE via broadcasting or unicasting Radio Resource Control (RRC) signaling.

摘要翻译： 提出了一种提供本地IP访问（LIPA）指示的方法。 在一个新颖的方面，提出了使用LIPA能力信息的增强小区选择方法。 基于LIPA能力相关信息，UE能够优先考虑具有LIPA能力的小区并相应地建立对应的分组数据网络（PDN）连接。 在第一实施例中，在UE中静态配置LIPA信息。 在第二实施例中，LIPA信息通过广播或单播无线电资源控制（RRC）信令被通知给UE。

公开(公告)号：US08837369B2

公开(公告)日：2014-09-16

申请号：US13540995

申请日：2012-07-03

申请人： Yih-Shen Chen ,  Chao-Chin Chou ,  Chia-Chun Hsu

发明人： Yih-Shen Chen ,  Chao-Chin Chou ,  Chia-Chun Hsu

IPC分类号： H04Q7/00 ,  H04Q7/24 ,  H04W48/08 ,  H04W36/00 ,  H04W76/02 ,  H04W48/02

CPC分类号： H04W36/26 ,  H04W36/0066 ,  H04W48/02 ,  H04W48/08 ,  H04W76/11 ,  H04W76/19

摘要： A method of providing Local IP Access (LIPA) indication is proposed. In one novel aspect, an enhanced cell selection method is proposed using LIPA capability information. Based on LIPA capability related information, a UE is able to prioritize LIPA-capable cells and establish a corresponding packet data network (PDN) connection accordingly. In one embodiment, LIPA information is informed to the UE via Non Access Stratum (NAS) signaling. The UE stores LIPA capability information when receiving a NAS message from a mobility management entity (MME). Later on, when the UE performs cell selection or reselection in idle mode, the UE can use the stored LIPA capability information to prioritize LIPA-capable cells.

摘要翻译： 提出了一种提供本地IP访问（LIPA）指示的方法。 在一个新颖的方面，提出了使用LIPA能力信息的增强小区选择方法。 基于LIPA能力相关信息，UE能够优先考虑具有LIPA能力的小区并相应地建立对应的分组数据网络（PDN）连接。 在一个实施例中，通过非接入层（NAS）信令向UE通知LIPA信息。 当从移动性管理实体（MME）接收到NAS消息时，UE存储LIPA能力信息。 稍后，当UE在空闲模式下执行小区选择或重选时，UE可以使用存储的LIPA能力信息来优先考虑具有LIPA能力的小区。

公开(公告)号：US20130010753A1

公开(公告)日：2013-01-10

申请号：US13540995

申请日：2012-07-03

申请人： Yih-Shen Chen ,  Chao-Chin Chou ,  Chia-Chun Hsu

发明人： Yih-Shen Chen ,  Chao-Chin Chou ,  Chia-Chun Hsu

IPC分类号： H04W36/00

CPC分类号： H04W36/26 ,  H04W36/0066 ,  H04W48/02 ,  H04W48/08 ,  H04W76/11 ,  H04W76/19

摘要： A method of providing Local IP Access (LIPA) indication is proposed. In one novel aspect, an enhanced cell selection method is proposed using LIPA capability information. Based on LIPA capability related information, a UE is able to prioritize LIPA-capable cells and establish a corresponding packet data network (PDN) connection accordingly. In one embodiment, LIPA information is informed to the UE via Non Access Stratum (NAS) signaling. The UE stores LIPA capability information when receiving a NAS message from a mobility management entity (MME). Later on, when the UE performs cell selection or reselection in idle mode, the UE can use the stored LIPA capability information to prioritize LIPA-capable cells.

摘要翻译： 提出了一种提供本地IP访问（LIPA）指示的方法。 在一个新颖的方面，提出了使用LIPA能力信息的增强小区选择方法。 基于LIPA能力相关信息，UE能够优先考虑具有LIPA能力的小区并相应地建立对应的分组数据网络（PDN）连接。 在一个实施例中，通过非接入层（NAS）信令向UE通知LIPA信息。 当从移动性管理实体（MME）接收到NAS消息时，UE存储LIPA能力信息。 稍后，当UE在空闲模式下执行小区选择或重选时，UE可以使用存储的LIPA能力信息来优先考虑具有LIPA能力的小区。