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1. 发明申请

US20090274041A1 Fast feedback contention-based ranging procedure in wireless communications systems 有权
标题翻译：无线通信系统中基于快速反馈竞争的测距程序
公开(公告)号：US20090274041A1
公开(公告)日：2009-11-05
申请号：US12387380
申请日：2009-04-30
申请人： Chao-Chin Chou , Yi-Shen Chen , I-Kang Fu
发明人： Chao-Chin Chou , Yi-Shen Chen , I-Kang Fu
IPC分类号： H04J1/16 , 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.
摘要翻译：在基于竞争的测距过程中提供了快速反馈机制。订户站（SS）通过在所选择的测距机会上发送测距码来初始化测距过程，以便在先前的上行链路帧中的共享测距信道上的基站（BS）进行资源接入。 SS还启动与测距代码相关联的时间。响应于所有接收到的测距机会，BS在随后的下行链路帧中广播确认（ACK）。 ACK包括指示测距机会的解码状态的接收状态消息。利用新颖的快速反馈机制，当发生测距碰撞或故障时，在接收到接收状态报告后，SS将继续进行下一轮的争用，而不用等待整个超时时间。结果，减少了由于测距碰撞或故障引起的总延迟。

2. 发明申请

US20100159991A1 Reliable femtocell system for wireless communication networks 审中-公开
标题翻译：用于无线通信网络的可靠的毫微微小区系统
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。

3. 发明授权

US08804658B2 Method and apparatus for handover between IEEE 802.16e and 802.16m systems 有权
标题翻译： IEEE 802.16e和802.16m系统之间切换的方法和装置
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。

4. 发明授权

US08369241B2 Fast feedback contention-based ranging procedure in wireless communications systems 有权
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.

5. 发明申请

US20110158118A1 Measurement and carrier group based optimization in wireless OFDM multi-carrier communication systems 有权
标题翻译：无线OFDM多载波通信系统中基于测量和载波组的优化
公开(公告)号：US20110158118A1
公开(公告)日：2011-06-30
申请号：US12930236
申请日：2010-12-29
申请人： Chao-Chin Chou , I-Kang Fu
发明人： Chao-Chin Chou , I-Kang Fu
IPC分类号： H04W24/02 , H04J11/00 , H04W36/00
CPC分类号： H04L27/2601 , H04B17/318 , H04B17/336 , H04B17/373 , H04B17/382 , H04W72/085
摘要： In a wireless OFDM multi-carrier communication system, a mobile station obtains measurement result of a first received signal strength indication (RSSI) of a first preamble signal transmitted from a base station over a first radio frequency (RF) carrier. The mobile station also obtains signal offset information between the first RF carrier and a second RF carrier of the base station. In response to the measurement result and the signal offset information, the mobile station estimates a second RSSI of a second preamble signal transmitted by the base station over the second RF carrier without performing scanning over the second RF carrier. In one novel aspect, the mobile station identifies a carrier group containing multiple carriers that belong to the same base station. Measurement optimization, initial cell selection and cell reselection optimization, report reduction, and other carrier group based optimization can be achieved in the multi-carrier system based on identified carrier group.
摘要翻译：在无线OFDM多载波通信系统中，移动站获得从基站通过第一射频（RF）载波发送的第一前导码信号的第一接收信号强度指示（RSSI）的测量结果。移动站还获得第一RF载波和基站的第二RF载波之间的信号偏移信息。响应于测量结果和信号偏移信息，移动台估计由基站在第二RF载波上发送的第二前置信号的第二RSSI，而不对第二RF载波执行扫描。在一个新颖的方面，移动台识别包含属于同一基站的多个载波的载波组。在基于识别的载波组的多载波系统中可以实现测量优化，初始小区选择和小区重选优化，报告减少等基于载波组的优化。

6. 发明申请

US20090310563A1 Scanning and handover operation in multi-carrier wireless communications systems 有权
标题翻译：多载波无线通信系统中的扫描和切换操作
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。

7. 发明申请

US20100272067A1 Carrier assignment with mobility support in multi-carrier OFDM systems 审中-公开
标题翻译：在多载波OFDM系统中具有移动性支持的载波分配
公开(公告)号：US20100272067A1
公开(公告)日：2010-10-28
申请号：US12799361
申请日：2010-04-23
申请人： Hsiao-Chen Lu , Chih-Hsiang Tang , Sheng-Wei Lin , Wan-Jiun Liao , I-Kang Fu , Chao-Chin Chou
发明人： Hsiao-Chen Lu , Chih-Hsiang Tang , Sheng-Wei Lin , Wan-Jiun Liao , I-Kang Fu , Chao-Chin Chou
IPC分类号： H04W36/00
CPC分类号： H04W36/0072
摘要： Carrier pre-assignment is applied in multi-carrier handover operation to mitigate the impact to the user experience during handover and to achieve various objectives of call admission control in wireless multi-carrier OFDM networks. With carrier pre-assignment, a mobile station communicates its multi-carrier information to a target base station. The target base station pre-assigns secondary carriers to fulfill the requirements of the mobile station. In a first embodiment, a break-before-entry (BBE) multi-carrier handover procedure with carrier pre-assignment is provided. In a second embodiment, an entry-before-break (EBB) multi-carrier handover procedures for both inter-FA and intra-FA with carrier pre-assignment are provided. The multi-carrier handover procedures with carrier pre-assignment may be applied to 2-to-2 or N-to-N carriers handover situation. Because target secondary carriers are pre-assigned before handoff, the mobile station is ready for data transmission over multiple carriers after handover without additional carrier assignment procedure.
摘要翻译：在多载波切换操作中应用载波预分配以减轻在切换期间对用户体验的影响，并且实现无线多载波OFDM网络中的呼叫准入控制的各种目标。通过载波预分配，移动台将其多载波信息传送到目标基站。目标基站预先分配辅助载波以满足移动台的要求。在第一实施例中，提供了具有载波预分配的中断前进（BBE）多载波切换过程。在第二实施例中，提供了具有载波预分配的FA间和FA之间的用于中断前（EBB）多载波切换程序。具有载波预分配的多载波切换过程可以应用于2对2或N到N载波切换情况。由于目标辅助载波在切换前被预分配，所以移动台准备好在切换之后通过多个载波进行数据传输，而无需额外的载波分配过程。

8. 发明申请

US20100111029A1 Fast feedback contention-based data transmission in wireless communications systems 审中-公开
标题翻译：无线通信系统中基于快速反馈竞争的数据传输
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。

9. 发明授权

US09853847B2 Measurement and carrier group based optimization in wireless OFDM multi-carrier communication systems 有权
公开(公告)号：US09853847B2
公开(公告)日：2017-12-26
申请号：US12930236
申请日：2010-12-29
申请人： Chao-Chin Chou , I-Kang Fu
发明人： Chao-Chin Chou , I-Kang Fu
IPC分类号： H04L12/26 , H04L27/26 , H04B17/318 , H04W72/08 , H04B17/336 , H04B17/373 , H04B17/382
CPC分类号： H04L27/2601 , H04B17/318 , H04B17/336 , H04B17/373 , H04B17/382 , H04W72/085
摘要： In a wireless OFDM multi-carrier communication system, a mobile station obtains measurement result of a first received signal strength indication (RSSI) of a first preamble signal transmitted from a base station over a first radio frequency (RF) carrier. The mobile station also obtains signal offset information between the first RF carrier and a second RF carrier of the base station. In response to the measurement result and the signal offset information, the mobile station estimates a second RSSI of a second preamble signal transmitted by the base station over the second RF carrier without performing scanning over the second RF carrier. In one novel aspect, the mobile station identifies a carrier group containing multiple carriers that belong to the same base station. Measurement optimization, initial cell selection and cell reselection optimization, report reduction, and other carrier group based optimization can be achieved in the multi-carrier system based on identified carrier group.

10. 发明授权

US08676208B2 Scanning and handover operation in multi-carrier wireless communications systems 有权
标题翻译：多载波无线通信系统中的扫描和切换操作
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。

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