公开(公告)号：US20140286223A1

公开(公告)日：2014-09-25

申请号：US14221664

申请日：2014-03-21

Applicant: MEDIATEK INC.

Inventor： Chia-Hao Yu ,  Chia-Chun Hsu ,  Yih-Shen Chen

IPC: H04W4/08

CPC classification number: H04W4/08 ,  H04L5/0037 ,  H04L12/185 ,  H04L12/1886 ,  H04W4/06 ,  H04W4/10 ,  H04W24/08 ,  H04W36/0083 ,  H04W36/08 ,  H04W36/30 ,  H04W36/32 ,  H04W72/00 ,  H04W72/005 ,  H04W72/121 ,  H04W74/006 ,  H04W76/40

Abstract: A method of supporting group communication over LTE MBMS is provided. A UE first establishes a unicast Evolved Packet Service (EPS) bearer in an LTE network for group communication. The UE belongs to a communication group having a communication group ID. The UE receives access information from the network for monitoring downlink (DL) multicast traffic of the DL group communication based on a multicast decision. The UE is then ready for monitoring a multicast Multimedia Broadcast Multicast Service (MBMS) bearer for receiving the DL multicast traffic. The multicast MBMS bearer is associated with a Temporary Mobile Group Identifier (TMGI), and wherein the TMGI is associated with the communication group ID. The UE later enters RRC_IDLE mode and releases a radio bearer of the unicast EPS bearer while keep monitoring the multicast MBMS bearer for the DL multicast traffic.

Abstract translation: 提供了一种通过LTE MBMS支持群组通信的方法。 UE首先在用于组通信的LTE网络中建立单播演进分组业务（EPS）承载。 UE属于具有通信组ID的通信组。 UE从网络接收基于多播决定的DL组通信的下行链路（DL）组播流量的接入信息。 然后，UE准备监视用于接收DL多播业务的组播多媒体广播多播服务（MBMS）承载。 组播MBMS承载与临时移动组标识符（TMGI）相关联，并且其中TMGI与通信组ID相关联。 UE随后进入RRC_IDLE模式，并释放单播EPS承载的无线电承载，同时继续监视DL组播业务的组播MBMS承载。

公开(公告)号：US20140146789A1

公开(公告)日：2014-05-29

申请号：US14168320

申请日：2014-01-30

Applicant: MEDIATEK, INC.

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

IPC: H04W36/12

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

Abstract: 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.

Abstract translation: 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：US20130294312A1

公开(公告)日：2013-11-07

申请号：US13935781

申请日：2013-07-05

Applicant: Mediatek, Inc.

Inventor： Yih-Shen Chen ,  Chung-Hsien Hsu

IPC: H04W52/06

CPC classification number: 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

Abstract: 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.

公开(公告)号：US20130242898A1

公开(公告)日：2013-09-19

申请号：US13781395

申请日：2013-02-28

Applicant: MEDIATEK, INC.

Inventor： Per Johan Mikael Johansson ,  Shiang-Jiun Lin ,  Yih-Shen Chen ,  William Plumb

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04W76/18

Abstract: A method of failure event reporting for initial connection setup failure is proposed. In one embodiment, a UE first camps in RRC_IDLE mode in a cell served by a base station. The UE then detects a connection setup failure when performing a random access channel (RACH) procedure with the base station in an RRC connection attempt. The UE records a failure event report when the RACH procedure fails. Later, the UE transmits the failure event report to the network in RRC_CONNECTED mode. The failure event report comprises information that refers to the earlier RRC connection attempt. The failure event report also comprises available location information or available mobility measurements at the time the initial connection setup failure occurs. Based on the failure event report, the network can adopt corrective actions accordingly to mitigate the failure.

Abstract translation: 提出了一种初始连接建立失败的故障事件报告方法。 在一个实施例中，UE首先在由基站服务的小区中以RRC_IDLE模式驻留。 然后，在RRC连接尝试中，当与基站执行随机接入信道（RACH）过程时，UE检测连接建立失败。 当RACH过程失败时，UE记录故障事件报告。 稍后，UE以RRC_CONNECTED模式将故障事件报告发送到网络。 故障事件报告包括参考较早的RRC连接尝试的信息。 故障事件报告还包括在初始连接建立故障发生时可用的位置信息或可用的移动性测量。 根据故障事件报告，网络可采取相应的纠正措施，减轻故障。

公开(公告)号：US20130201851A1

公开(公告)日：2013-08-08

申请号：US13756809

申请日：2013-02-01

Applicant: Mediatek, Inc.

Inventor： Chie-Ming Chou ,  Chia-Chun Hsu ,  Yih-Shen Chen ,  Per Johan Mikael Johanson

IPC: H04W24/02

CPC classification number: H04W72/0486 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W36/26

Abstract: A method of collecting and providing traffic statistics in a cellular network in accordance is proposed. A UE establishes an RRC connection with a base station. The UE starts to collect traffic statistics that comprises a CDF curve or a PDF diagram for packet inter-arrival time. The UE may receive a measurement configuration from the base station for the traffic statistics collection. The UE then reports a representation of the traffic statistics to the base station for RRC reconfiguration. The UE may also receive a reporting request from the base station that specifies a representation format. The representation format includes one or more probability values at corresponding inter-arrival time points, at least one slope of the CDF, one or more steep events in the CDF, or a PDF range.

公开(公告)号：US20130084888A1

公开(公告)日：2013-04-04

申请号：US13633463

申请日：2012-10-02

Applicant: MEDIATEK, INC.

Inventor： Per Johan Mikael Johansson ,  Yih-Shen Chen

IPC: H04W64/00

CPC classification number: H04W24/08 ,  H04W64/00

Abstract: A method and apparatus for active location acquisition. An active location acquisition controller is included in a device. The active location acquisition controller can be a circuit or code running on a processor included in the device. A measurement collection request is communicated to the device. The device then determines if and how a location information is to be acquired. If the device determines that the location information is to be acquired, the device enables a location acquisition system to acquire the location information and the device then acquires the requested measurement and stores the requested measurement and the location information in the measurement log. If the device determines that the location information is not to be acquired, the device disables a location acquisition system and does not acquire the location information and the device then acquires the requested measurement and stores the requested measurement in the measurement log.

Abstract translation: 一种用于主动位置采集的方法和装置。 一个有源位置采集控制器被包含在一个设备中。 活动位置采集控制器可以是在设备中包括的处理器上运行的电路或代码。 测量收集请求被传送到设备。 然后，设备确定是否以及如何获取位置信息。 如果设备确定要获取位置信息，则设备使得位置获取系统能够获取位置信息，并且设备然后获取所请求的测量，并将所请求的测量和位置信息存储在测量日志中。 如果设备确定不获取位置信息，则设备禁用位置获取系统并且不获取位置信息，并且设备然后获取所请求的测量值并将所请求的测量值存储在测量日志中。

公开(公告)号：US20130083683A1

公开(公告)日：2013-04-04

申请号：US13629986

申请日：2012-09-28

Applicant: MEDIATEK, INC.

Inventor： Chien-Hwa Hwang ,  Shiang-Jiun Lin ,  Yih-Shen Chen

IPC: H04W24/00

CPC classification number: H04L5/0048 ,  H04L5/0053 ,  H04L5/0082 ,  H04L5/0094 ,  H04L5/0096 ,  H04L43/08 ,  H04W48/10 ,  H04W64/00 ,  H04W72/0406 ,  H04W72/1278

Abstract: A method of network-based positioning using sounding reference signal (SRS) is proposed. An eNodeB configures a number of parameters of a periodic SRS transmission for a user equipment (UE). The eNodeB then transmits SRS configuration data for SRS measurements performed by a location measurement unit (LMU). The SRS configuration data includes cell-specific SRS bandwidth configuration and UE-specific SRS bandwidth configuration. The SRS configuration data may further include a number of antenna ports for SRS transmission, SRS frequency hopping bandwidth configuration, information on whether SRS sequence-group hopping is enabled, and ΔSS when SRS sequence hopping is enabled. Upon receiving the SRS configuration data, the LMU is able to perform timing measurements over the received SRS signals from the UE. In one embodiment, the LMU detects SRS dropping to avoid performance degradation of the network-based positioning.

Abstract translation: 提出了一种使用探空参考信号（SRS）进行网络定位的方法。 eNodeB为用户设备（UE）配置周期性SRS传输的多个参数。 eNodeB然后发送用于由位置测量单元（LMU）执行的SRS测量的SRS配置数据。 SRS配置数据包括小区特定的SRS带宽配置和UE特定的SRS带宽配置。 SRS配置数据还可以包括用于SRS传输的多个天线端口，SRS跳频带宽配置，是否启用SRS序列组跳变的信息，以及当启用SRS序列跳频时的“Dgr”; SS。 在接收到SRS配置数据之后，LMU能够对来自UE的接收的SRS信号执行定时测量。 在一个实施例中，LMU检测到SRS丢弃，以避免基于网络的定位的性能下降。

公开(公告)号：US20230095823A1

公开(公告)日：2023-03-30

申请号：US17945053

申请日：2022-09-14

Applicant: MEDIATEK INC.

Inventor： LI-CHUAN TSENG ,  Chia-Hao Yu ,  Kuan-Hung Chou ,  Chia-Chun Hsu ,  Yih-Shen Chen

IPC: H04W36/00 ,  H04W36/08 ,  H04W56/00

Abstract: A method of configuring a set of active cells among neighboring cells to reduce latency and interruption for inter-cell mobility is proposed. The set of active cells is an active set of cells among which UE can do fast cell switching. The set of active cells is configured by the network based on UE measurement report or network deployment information. UE maintains the configuration and can perform pre-synchronization to the configured active cells in downlink (DL) only or in both DL and uplink (UL). UE maintains the DL/UL synchronization with the active cells, and applies configuration once UE is indicated to switch to an active cell as the target cell. Because UE maintains the configuration and DL/UL timing of the target cell before receiving the cell-switch command, the mobility latency and interruption time for inter-cell mobility is reduced.

公开(公告)号：US20210345334A1

公开(公告)日：2021-11-04

申请号：US17374027

申请日：2021-07-13

Applicant: MediaTek Inc.

Inventor： Yih-Shen Chen ,  Shun-An Yang ,  Chih Hsiu Lin ,  Guan-Yu Lin

IPC: H04W72/04 ,  H04W52/38 ,  H04W76/15

Abstract: Various solutions for data transmission over multiple uplink carrier with respect to user equipment (UE) in mobile communications are described. A UE may establish a connection over a downlink component carrier and a first uplink component carrier with a network apparatus. The UE may further establish a connection over a second uplink component carrier with the network apparatus. The UE may transmit uplink data to the network apparatus via at least one of the first uplink component carrier and the second uplink component carrier. The UE may also assign the first uplink component carrier as a primary carrier and assigning the second uplink component carrier as a supplementary carrier. The UE may further switch the primary carrier from the first uplink component carrier to the second uplink component carrier.

公开(公告)号：US10932147B2

公开(公告)日：2021-02-23

申请号：US16366457

申请日：2019-03-27

Applicant: MEDIATEK INC.

Inventor： Dinhwa Huang ,  Yih-Shen Chen ,  Tsang-Wei Yu

IPC: H04W24/08 ,  H04W24/10

Abstract: A method can include receiving measurement configurations for measuring serving/neighboring cells at a user equipment (UE) in a wireless communication system. The measurement configurations can indicate multiple measurement objects (MOs) each with a SSB measurement timing configuration (SMTC) specifying a sequence of SMTC window durations (i.e. SMTC occasions), and a sequence of gap occasions. The MOs can be measured within the SMTC occasions that overlap the gap occasions. The method can further include determining a carrier-specific scaling factor for a target MO in the multiple MOs based on candidate MOs to be measured in each of the gap occasions.