公开(公告)号：US08989085B2

公开(公告)日：2015-03-24

申请号：US12589974

申请日：2009-10-30

申请人： I-Kang Fu

发明人： I-Kang Fu

IPC分类号： H04W72/00 ,  H04J11/00 ,  H04W56/00 ,  H04J3/06 ,  H04L27/26

CPC分类号： H04W56/0015 ,  H04J3/0641 ,  H04J11/0056 ,  H04J11/0069 ,  H04J11/0093 ,  H04L27/2627 ,  H04L27/2655 ,  H04W72/042

摘要： A method of downlink synchronization for a femto base station in a cellular orthogonal frequency division multiplexing (OFDM) system is provided. The femto base station first scans one or more received reference signals transmitted from a plurality of neighboring macro base stations. The femto base station then determines a desired reference signal from the received one or more reference signals based on the scanning result. Finally, the femto base station configures its downlink radio signal transmission time based on the desired reference signal such that the femto base station is synchronized with the plurality of neighboring macro base stations.

摘要翻译： 提供了一种用于毫微微基站在蜂窝正交频分复用（OFDM）系统中的下行同步的方法。 毫微微基站首先扫描从多个相邻宏基站发送的一个或多个接收的参考信号。 毫微微基站然后基于扫描结果从所接收的一个或多个参考信号确定期望的参考信号。 最后，毫微微基站基于期望的参考信号配置其下行链路无线电信号传输时间，使得毫微微基站与多个相邻的宏基站同步。

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：US08498249B2

公开(公告)日：2013-07-30

申请号：US12387633

申请日：2009-05-04

申请人： I-Kang Fu

发明人： I-Kang Fu

IPC分类号： H04W4/00 ,  H04W40/00 ,  H04J3/16

CPC分类号： H04W72/0453 ,  H04L5/0053 ,  H04W36/0055 ,  H04W36/22 ,  H04W72/048 ,  H04W72/06

摘要： A unified two-stage network entry procedure is provided for OFDM multi-carrier wireless communications systems. During a first stage, a mobile station performs a common network entry procedure using a primary radio frequency carrier and then exchanges multi-carrier capability information with a base station. In one embodiment, the base station transmits a network entry allowance indicator to assist the mobile station in selecting the primary carrier. The network entry allowance indicator comprises information of preference of one or more available carriers. During a second stage, the mobile station enables multi-carrier transmission over multiple frequency channels if both the mobile station and the base station support multi-carrier capability. Before enabling multi-carrier transmission, the mobile station may optionally perform additional ranging by transmitting a ranging request for a secondary carrier. In one embodiment, the base station replies with a ranging response in response to the ranging request through the primary carrier.

公开(公告)号：US08238370B2

公开(公告)日：2012-08-07

申请号：US12352681

申请日：2009-01-13

申请人： Yih-Shen Chen ,  I-Kang Fu

发明人： Yih-Shen Chen ,  I-Kang Fu

IPC分类号： H04J3/24

CPC分类号： H04W48/08 ,  H04W28/06 ,  H04W52/0229 ,  Y02D70/146

摘要： A method for transmitting system information bit streams of one or more base stations in a wireless communication system is provided. The method includes: identifying network-entry-related bit streams and non-network-entry-related bit streams from the system information bit streams, where the network-entry-related bit streams carry essential system information for a terminal to access a network through at least one of the base stations; modulating the network-entry-related bit streams according to a first set of modulation and coding schemes (MCSs) and modulating the non-network-entry-related bit streams according to a second set of MCSs; and transmitting the system information bit streams with different frequencies, where the network-entry-related bit streams are periodically transmitted according to a first predetermined period.

摘要翻译： 提供一种在无线通信系统中发送一个或多个基站的系统信息比特流的方法。 该方法包括：从系统信息比特流识别与网络入口相关的比特流和非网络入口相关比特流，其中网络入口相关比特流携带用于终端访问网络的基本系统信息 至少一个基站; 根据第一组调制和编码方案（MCS）调制与网络入口相关的比特流，并根据第二组MCS对非网络入口相关比特流进行调制; 以及发送具有不同频率的系统信息比特流，其中根据第一预定周期周期性地发送网络入口相关比特流。

公开(公告)号：US20120176923A1

公开(公告)日：2012-07-12

申请号：US13344589

申请日：2012-01-05

申请人： Chia-Chun Hsu ,  Chih-Yuan Lin ,  Yih-Shen Chen ,  I-Kang Fu ,  Michael Roberts

发明人： Chia-Chun Hsu ,  Chih-Yuan Lin ,  Yih-Shen Chen ,  I-Kang Fu ,  Michael Roberts

IPC分类号： H04W52/24 ,  H04W24/02

CPC分类号： H04W52/243 ,  H04W52/34 ,  H04W52/365 ,  H04W52/367 ,  H04W52/38 ,  H04W72/048

摘要： A power control method to mitigate in-device coexistence (IDC) interference is provided. A wireless communication device (UE) is equipped with a first LTE radio module and a second co-located WiFi/BT/GSNN radio module. Upon detecting coexistence or IDC interference, the UE applies power control method to mitigate the interference. In a first embodiment, the LTE radio module adjusts its power parameters locally without informing the serving eNB. In a second embodiment, the LTE radio module adjusts its power parameters and implicit informs the eNB through existing PHR reporting. In a third embodiment, the LTE radio module changes its power or power class and explicitly informs the eNB through UE capability or new RRC message or MAC CE. Power control can be used as a low cost and lightweight solution before applying other heavyweight solutions that either require more resource or control overhead, or have higher impact on throughput.

摘要翻译： 提供了减轻设备间共存（IDC）干扰的功率控制方法。 无线通信设备（UE）配备有第一LTE无线电模块和第二共同配置的WiFi / BT / GSNN无线电模块。 当检测到共存或IDC干扰时，UE采用功率控制方法来减轻干扰。 在第一实施例中，LTE无线电模块在本地调整其功率参数而不通知服务eNB。 在第二实施例中，LTE无线电模块调整其功率参数，并通过现有的PHR报告暗示通知eNB。 在第三实施例中，LTE无线电模块改变其功率或功率等级，并通过UE能力或新的RRC消息或MAC CE明确地通知eNB。 在应用其他重量级解决方案之前，功率控制可以用作低成本和轻量级的解决方案，需要更多资源或控制开销，或对吞吐量有较高的影响。

公开(公告)号：US20110243106A1

公开(公告)日：2011-10-06

申请号：US13065923

申请日：2011-04-01

申请人： Chia-Chun Hsu ,  Yih-Shen Chen ,  Yu-Hao Chang ,  I-Kang Fu

发明人： Chia-Chun Hsu ,  Yih-Shen Chen ,  Yu-Hao Chang ,  I-Kang Fu

IPC分类号： H04W72/04

CPC分类号： H04W24/10 ,  H04L5/0096 ,  H04L5/0098 ,  H04W52/365 ,  H04W72/1284 ,  H04W72/14

摘要： Methods to manage multiple component carriers (CCs) efficiently in a mobile network with carrier aggregation (CA) enabled are proposed. For CC activation/deactivation, a single LCID value is used to represent both activation and deactivation command. A single command with multiple instructions is provided to activate and/or deactivate multiple CCs. In addition, unnecessary re-activation or re-inactivation of a CC is prevented, and explicit feedback for activation/deactivation is considered. For scheduling mechanism, a novel buffer status reporting (BSR) procedure is provided, where only one BSR is calculated after preparing all the transport blocks (TB) within one transmission time interval (TTI). Novel power headroom reporting (PHR) format and trigger are also provided. For DL-UL linking, various linking types are created based on whether there is carrier indicator field (CIF) in DL grant or UL grant. The various linking types are used in different applications to improve scheduling flexibility and load balancing.

摘要翻译： 提出了在启用载波聚合（CA）的移动网络中有效管理多分量载波（CC）的方法。 对于CC激活/去激活，单个LCID值用于表示激活和停用命令。 提供具有多个指令的单个命令以激活和/或去激活多个CC。 另外，不必要地重新激活或重新激活CC，并且考虑了激活/去激活的显式反馈。 对于调度机制，提供了一种新的缓冲状态报告（BSR）过程，其中在一个传输时间间隔（TTI）中准备所有传输块（TB）之后仅计算一个BSR。 还提供了新的功率余量报告（PHR）格式和触发。 对于DL-UL链接，基于DL授权或UL授权中是否存在载波指示符字段（CIF）来创建各种链接类型。 各种链接类型用于不同的应用程序，以提高调度灵活性和负载平衡。

公开(公告)号：US20100272051A1

公开(公告)日：2010-10-28

申请号：US12799360

申请日：2010-04-23

申请人： I-Kang Fu ,  Hsiao-Chen Lu ,  Chih-Hsiang Tang ,  Sheng-Wei Lin ,  Wan-Jiun Liao

发明人： I-Kang Fu ,  Hsiao-Chen Lu ,  Chih-Hsiang Tang ,  Sheng-Wei Lin ,  Wan-Jiun Liao

IPC分类号： H04W72/04

CPC分类号： H04L5/0085 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0046 ,  H04W24/10 ,  H04W28/20 ,  H04W48/08 ,  H04W72/042 ,  H04W72/048

摘要： In a carrier assignment procedure, a mobile station and its serving base station exchange and negotiate carrier deployment and multi-carrier capability information, and make a well-informed carrier assignment decision based on the negotiation result. The carrier assignment procedure ensures that the assigned secondary carriers are not only supported by both the serving BS and the MS, but are also desirable under additional requirements and considerations. Furthermore, the carrier assignment decision may be updated based on additional considerations such as channel quality measurement and network load condition over the assigned carriers. Such updated assignment decision may be made by the base station in unsolicited manner, or based on a carrier re-assignment request from the mobile station.

摘要翻译： 在载波分配过程中，移动台及其服务基站交换和协商载波部署和多载波能力信息，并根据协商结果做出知情的载波分配决策。 载波分配过程确保所分配的辅助载波不仅由服务BS和MS两者都支持，而且在额外的要求和考虑下也是可取的。 此外，可以基于诸如信道质量测量和分配的载波上的网络负载条件的附加考虑来更新载波分配决定。 这种更新的分配决定可以由基站以非请求方式，或者基于来自移动台的载波重新分配请求来进行。

公开(公告)号：US20100002571A1

公开(公告)日：2010-01-07

申请号：US12498531

申请日：2009-07-07

申请人： Pei-Kai Liao ,  I-Kang Fu

发明人： Pei-Kai Liao ,  I-Kang Fu

IPC分类号： H04J11/00 ,  H04L27/00

CPC分类号： H04L27/2647 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0044 ,  H04L27/261 ,  H04L27/2644

摘要： A communications apparatus is provided. A receiving module receives a signal with a predetermined signal bandwidth. A low pass filter filters the signal to obtain a filtered signal. A filter bandwidth of the low pass filter is wide enough to pass the regular sub-carrier frequency components and at least half of the guard sub-carrier frequency components of the signal. An analog to digital converter samples the filtered signal with a sampling rate exceeding a standard sampling rate defined in accordance with the predetermined signal bandwidth of the signal to obtain a plurality of digital samples. A Fast Fourier Transform module performs a fast Fourier transform on a predetermined number of points of the digital samples to obtain a plurality of transformed samples. The predetermined number exceeds a standard number defined in accordance with the predetermined carrier bandwidth. A sub-carrier collector collects the data from the transformed samples.

摘要翻译： 提供一种通信装置。 接收模块接收具有预定信号带宽的信号。 低通滤波器对信号进行滤波以获得滤波信号。 低通滤波器的滤波器带宽足够宽以使正常的子载波频率分量和信号的保护子载波频率分量的至少一半。 模数转换器以超过根据信号的预定信号带宽定义的标准采样速率的采样率对滤波后的信号进行采样，以获得多个数字采样。 快速傅立叶变换模块对数字样本的预定数量的点执行快速傅里叶变换，以获得多个变换样本。 预定数量超过根据预定载波带宽定义的标准号码。 子载波收集器从转换的样本收集数据。

公开(公告)号：US20090274096A1

公开(公告)日：2009-11-05

申请号：US12387633

申请日：2009-05-04

申请人： I-Kang Fu

发明人： I-Kang Fu

IPC分类号： H04W74/00 ,  H04L27/28

CPC分类号： H04W72/0453 ,  H04L5/0053 ,  H04W36/0055 ,  H04W36/22 ,  H04W72/048 ,  H04W72/06

摘要： A unified two-stage network entry procedure is provided for OFDM multi-carrier wireless communications systems. During a first stage, a mobile station performs a common network entry procedure using a primary radio frequency carrier and then exchanges multi-carrier capability information with a base station. In one embodiment, the base station transmits a network entry allowance indicator to assist the mobile station in selecting the primary carrier. The network entry allowance indicator comprises information of preference of one or more available carriers. During a second stage, the mobile station enables multi-carrier transmission over multiple frequency channels if both the mobile station and the base station support multi-carrier capability. Before enabling multi-carrier transmission, the mobile station may optionally perform additional ranging by transmitting a ranging request for a secondary carrier. In one embodiment, the base station replies with a ranging response in response to the ranging request through the primary carrier.

摘要翻译： 为OFDM多载波无线通信系统提供统一的两级网络入口程序。 在第一阶段期间，移动台使用主要无线电频率载波执行公共网络进入过程，然后与基站交换多载波能力信息。 在一个实施例中，基站发送网络进入允许指示符以帮助移动台选择主载波。 网络进入允许指示符包括一个或多个可用载体的偏好信息。 在第二阶段期间，如果移动站和基站都支持多载波能力，则移动台能够在多个频率信道上进行多载波传输。 在启用多载波传输之前，移动台可以可选地通过发送用于辅助载波的测距请求来执行附加测距。 在一个实施例中，基站响应于通过主载波的测距请求，响应测距响应。

公开(公告)号：US20080274746A1

公开(公告)日：2008-11-06

申请号：US12121749

申请日：2008-05-15

申请人： Shiang-Jiun Lin ,  I-Kang Fu ,  Cheng-Kang Pai ,  Wern-Ho Sheen

发明人： Shiang-Jiun Lin ,  I-Kang Fu ,  Cheng-Kang Pai ,  Wern-Ho Sheen

IPC分类号： H04B7/15 ,  H04Q7/20 ,  H04B17/00

CPC分类号： H04B7/2606

摘要： A scheduling method for a wireless multi-hop relay communication system, wherein the communication system includes a base station dominating a plurality of relay stations, the scheduling method including separating the plurality of relay stations into N groups, N being a natural number, dividing a period for providing a service by the base station into N phases, wherein N is the number of the groups of the relay stations, serving the relay stations in a jth group during an ith phase by the base station, wherein 1≦i, j≦N, and serving a user or a subordinate relay station within service areas of the relay stations not in the jth group during the ith phase by the relay stations not in the jth group.

摘要翻译： 一种用于无线多跳中继通信系统的调度方法，其中所述通信系统包括支配多个中继站的基站，所述调度方法包括将所述多个中继站分为N组，N为自然数， 用于将基站服务提供到N个阶段，其中N是在第i个/第（i）个组中为中继站服务的中继站的组的数量， SUP>相位，其中1 <= i，j <= N，并且在期间的第组中的中继站的服务区域内的用户或下属中继站 i ^{相<！ - SIPO - >相不是在第j 组中的中继站。}