公开(公告)号：US20090185543A1

公开(公告)日：2009-07-23

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： H04W8/00

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：US09237523B2

公开(公告)日：2016-01-12

申请号：US12459711

申请日：2009-07-06

申请人： Chung-Hsien Hsu ,  Yih-Shen Chen

发明人： Chung-Hsien Hsu ,  Yih-Shen Chen

IPC分类号： H04B1/16 ,  H04W52/02 ,  H04B1/06

CPC分类号： H04W52/0232 ,  Y02D70/1262 ,  Y02D70/23 ,  Y02D70/24

摘要： A method of establishing a sleep mode operation between a mobile station and its serving base station is provided in a wireless communications system. When sleep mode operation is active, the MS enters into a series of sleep cycle and each sleep cycle comprises a listening window followed by a sleep window. In one novel aspect, each sleep cycle is associated with a set of sleep cycle parameters including a Sleep Cycle Length and an adjustable Listening Window Length. Each set of sleep cycle parameters is determined based on a predefined traffic characteristic of a data communication flow between the MS and it serving BS. Different embodiments of sleep cycle parameters are provided for real-time traffic, non-real-time traffic, real-time and non-real-time mixed traffic, and multi-rate transmission traffic. By using sleep cycle-based parameters, the efficiency of sleep mode operation is improved.

摘要翻译： 在无线通信系统中提供在移动台及其服务基站之间建立睡眠模式操作的方法。 当睡眠模式操作激活时，MS进入一系列睡眠周期，每个睡眠周期包括一个监听窗口，随后是一个睡眠窗口。 在一个新颖的方面，每个睡眠周期与一组睡眠周期参数相关联，包括睡眠周期长度和可调节听力窗口长度。 基于MS与其服务BS之间的数据通信流的预定的业务特性来确定每组睡眠周期参数。 提供睡眠周期参数的不同实施例用于实时业务，非实时业务，实时和非实时混合业务以及多速率传输业务。 通过使用基于睡眠循环的参数，提高了睡眠模式操作的效率。

公开(公告)号：US09203562B2

公开(公告)日：2015-12-01

申请号：US12380538

申请日：2009-02-28

申请人： Yih-Shen Chen

发明人： Yih-Shen Chen

IPC分类号： H04L27/00 ,  H04L1/18

CPC分类号： H04L1/1835 ,  H04L1/1851

摘要： In a Hybrid Automatic Repeat ReQuest (HARQ) communication system, a receiver receives from a transmitter a HARQ sub-burst. A retransmission counter (RE_TX_CNT) in the receiver is incremented if either: (i) the receiver cannot decode the sub-burst, or (ii) no retransmission of the sub-burst is received within a Predetermined Retransmission Delay (PRD) interval. If RE_TX_CNT reaches a Maximal Retransmission Count (MAX_RE_CNT), then information for the sub-burst that was previously stored for HARQ purposes in a soft combining buffer in the receiver is flushed. Parameters that set the PRD interval and the MAX_RE_CNT value are pre-negotiated between the transmitter and the receiver. In another embodiment, if a novel timer in the receiver indicates that a first threshold time has elapsed after receipt of an undecodable HARQ transmission then buffered information is marked, whereas if the timer indicates that a second threshold time has elapsed then the marked information is flushed.

公开(公告)号：US08842546B2

公开(公告)日：2014-09-23

申请号：US13135844

申请日：2011-07-15

申请人： Yih-Shen Chen ,  Chia-Chun Hsu ,  William Plumb ,  Michael Roberts

发明人： Yih-Shen Chen ,  Chia-Chun Hsu ,  William Plumb ,  Michael Roberts

IPC分类号： H04B7/00 ,  H04W36/08 ,  H04W88/06 ,  H04W28/18 ,  H04W48/20 ,  H04W84/18 ,  H04W28/04 ,  H04W24/00

CPC分类号： H04W36/30 ,  H04W24/00 ,  H04W24/08 ,  H04W24/10 ,  H04W28/04 ,  H04W28/18 ,  H04W36/0016 ,  H04W36/08 ,  H04W48/20 ,  H04W60/04 ,  H04W72/082 ,  H04W76/19 ,  H04W84/18 ,  H04W88/06

摘要： Various methods for wireless communication in a device with co-existed/co-located radios are provided. Multiple communication radio transceivers are co-existed/co-located in a user equipment (UE) having in-device coexistence (IDC) capability, which may result in IDC interference. For example, the UE is equipped with both LTE radio and some ISM band applications such as WiFi and Bluetooth modules. In a first method, the network identifies IDC capability by UE identification (e.g., UE ID). In a second method, the UE intentionally performs cell selection or reselection to cells in non-ISM frequency bands. In a third method, the UE signals the existence of ISM band applications via capability negotiation. In a fourth method, the UE signals the activation of ISM band applications by signaling messages (e.g., RRC message or MAC CE). Under the various methods, the UE and its serving eNB can apply FDM or TDM solutions to mitigate the IDC interference.

摘要翻译： 提供了具有共存/同位置无线电装置的无线通信的各种方法。 多个通信无线电收发机共存/共同位于具有设备内共存（IDC）能力的用户设备（UE）中，这可能导致IDC干扰。 例如，UE配备有LTE无线电和一些ISM频带应用，例如WiFi和蓝牙模块。 在第一种方法中，网络通过UE识别识别IDC能力（例如，UE ID）。 在第二种方法中，UE有意地对非ISM频带中的小区执行小区选择或重选。 在第三种方法中，UE通过能力协商来发出ISM频带应用的存在。 在第四种方法中，UE通过信令消息（例如，RRC消息或MAC CE）来通知ISM频带应用的激活。 在各种方法下，UE及其服务eNB可以应用FDM或TDM解决方案来减轻IDC干扰。

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：US08548082B2

公开(公告)日：2013-10-01

申请号：US12589449

申请日：2009-10-23

申请人： Pei-Kai Liao ,  Chih-Yuan Lin ,  Yih-Shen Chen

发明人： Pei-Kai Liao ,  Chih-Yuan Lin ,  Yih-Shen Chen

IPC分类号： H04B7/02

CPC分类号： H04L5/0023 ,  H04L1/0072 ,  H04L1/0631 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0094 ,  H04L25/0228

摘要： A contention-based multi-antenna access request transmission/receiving procedure in MIMO OFDM/OFDMA systems is provided to reduce access latency. A mobile station encodes and transmits an access request over a shared access channel using multiple transmitting antennas, while a base station receives and decodes a number of access requests using multiple receiving antennas. Each access request comprises an access indictor and an access message. In a first MIMO scheme, the mobile station transmits the access indicator as preambles, while the access message is encoded by SFBC/STBC to obtain spatial diversity. At the receive side, the access indicator is exploited as pilots for channel estimation. The access message is decoded using SFBC/STBC decoding algorithm. In a second MIMO scheme, the mobile station performs precoding/beamforming for each of the transmitting antenna to obtain beamforming gain, while the base station performs virtual beam matching based on the detection results of the access indicators.

摘要翻译： 提供MIMO OFDM / OFDMA系统中的基于竞争的多天线接入请求发送/接收过程以减少接入等待时间。 移动台通过使用多个发射天线的共享接入信道来编码和发送接入请求，而基站使用多个接收天线接收并解码多个接入请求。 每个访问请求包括访问指示符和访问消息。 在第一MIMO方案中，移动站将接入指示符作为前导码发送，而接入消息由SFBC / STBC编码以获得空间分集。 在接收端，接入指示器被用作信道估计的导频。 访问消息使用SFBC / STBC解码算法进行解码。 在第二MIMO方案中，移动台对于发射天线中的每一个执行预编码/波束成形，以获得波束成形增益，而基站基于访问指示符的检测结果执行虚拟波束匹配。

公开(公告)号：US08520542B2

公开(公告)日：2013-08-27

申请号：US12924650

申请日：2010-09-30

申请人： Yu-Hao Chang ,  Yih-Shen Chen

发明人： Yu-Hao Chang ,  Yih-Shen Chen

IPC分类号： H04J1/16 ,  H04L12/26 ,  H04L12/28 ,  H04W4/00

CPC分类号： H04W52/54 ,  H04W52/146 ,  H04W52/241 ,  H04W52/42

摘要： A method of uplink power control in a wireless OFDMA system is provided. A serving base station first configures a fast feedback channel by transmitting a feedback allocation message to a mobile station. The mobile station then reports downlink channel information via the allocated fast feedback channel. Based on the reported downlink channel information, the serving base station estimates uplink channel quality and thereby detects a channel variation and generates an uplink power adjustment message that delivers a power offset to adjust the transmitting power level of the mobile station. In one novel aspect, the uplink power adjustment message also comprises feedback allocation information that re-configures the fast feedback channel without extra signaling overhead. In addition, the novel power adjustment message eliminates redundant information such that it is transmitted via a minimum resource unit without requiring extra resource.

摘要翻译： 提供了一种在无线OFDMA系统中的上行链路功率控制的方法。 服务基站首先通过向移动台发送反馈分配消息来配置快速反馈信道。 移动台然后经由分配的快速反馈信道报告下行链路信道信息。 基于所报告的下行链路信道信息，服务基站估计上行链路信道质量，从而检测信道变化，并产生传递功率偏移以调整移动台的发射功率电平的上行链路功率调整消息。 在一个新颖的方面，上行链路功率调整消息还包括重新配置快速反馈信道而没有额外的信令开销的反馈分配信息。 另外，新的功率调整消息消除了冗余信息，使得它经由最小资源单元被传输，而不需要额外的资源。

公开(公告)号：US08515481B2

公开(公告)日：2013-08-20

申请号：US12584396

申请日：2009-09-03

申请人： Yih-Shen Chen ,  Chung-Hsien Hsu

发明人： Yih-Shen Chen ,  Chung-Hsien Hsu

IPC分类号： H04B7/00

CPC分类号： H04W52/06 ,  H04L5/001 ,  H04L5/0098 ,  H04W52/0225 ,  H04W52/0229 ,  H04W52/08 ,  H04W52/10 ,  H04W52/146 ,  H04W52/16 ,  H04W52/34 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/146 ,  Y02D70/23 ,  Y02D70/24

摘要： A method of power management for a mobile station in a multi-carrier wireless network is provided. A primary connection between the mobile station and a serving base station is first established by performing initial ranging over a primary radio frequency (RF) carrier. A secondary connection between the mobile station and the base station is then established by performing periodic ranging over a secondary RF carrier. To achieve efficient power management, the mobile station performs Open Loop Power Control and obtains long-term link measurement (CSI) of the primary carrier. The mobile station then adjusts carrier-specific parameters based on the primary carrier CSI. For RF carriers that convey on-going data traffic, Close Loop Power Control is updated per RF carrier. When the mobile station enters sleep mode operation, it receives traffic indication messages on the primary RF carrier and then dynamically wakes up one or more corresponding RF carriers for data reception.

摘要翻译： 提供了一种用于多载波无线网络中的移动台的功率管理方法。 首先通过在主射频（RF）载波上执行初始测距来建立移动台和服务基站之间的主要连接。 然后通过在次RF载波上执行周期性测距来建立移动台和基站之间的二次连接。 为了实现有效的电力管理，移动台执行开环功率控制，并获得主载波的长期链路测量（CSI）。 然后，移动台基于主载波CSI调整载波特定参数。 对于传送正在进行的数据流量的RF载波，每个RF载波更新闭环功率控制。 当移动台进入睡眠模式操作时，它在主RF载波上接收业务指示消息，然后动态地唤醒一个或多个对应的RF载波用于数据接收。

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：US08345623B2

公开(公告)日：2013-01-01

申请号：US12653360

申请日：2009-12-11

申请人： Yih-Shen Chen ,  Pei-Kai Liao

发明人： Yih-Shen Chen ,  Pei-Kai Liao

IPC分类号： H04Q7/00

CPC分类号： H04L27/2607 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0073 ,  H04L27/2655 ,  H04W56/0005

摘要： A unified synchronous ranging channel is provided. The unified synchronous ranging channel has a ranging cyclic prefix length that is the same as a cyclic prefix length of a data channel. The unified synchronous ranging channel is used for one of initial ranging, handover ranging, and periodic ranging between a mobile station and a femto base station. In one embodiment, the synchronous ranging channel spans over a two-dimensional radio resource region having a first number of subcarriers along frequency domain, a second number of OFDM symbols along time domain, and a third number of time-domain repetition. At the transmit side, a ranging code sequence is generated by applying a fixed time-domain cyclic shift per OFDM symbol to a root sequence. At the receive side, the ranging code sequence is decoded by using a summation module, a likelihood-combining module, and a modified peak test module that normalizes a peak value.

摘要翻译： 提供统一的同步测距通道。 统一同步测距信道具有与数据信道的循环前缀长度相同的测距循环前缀长度。 统一的同步测距信道用于移动台和毫微微基站之间的初始测距，切换测距和周期性测距之一。 在一个实施例中，同步测距信道跨越具有沿频域的第一数量子载波的二维无线电资源区域，沿时域的第二数量的OFDM符号和第三数量的时域重复。 在发送侧，通过对根序列应用每OFDM符号的固定时域循环移位来生成测距码序列。 在接收侧，通过使用求和模块，似然合成模块和归一化峰值的修改峰值测试模块对测距代码序列进行解码。