公开(公告)号：US20210057939A1

公开(公告)日：2021-02-25

申请号：US17093272

申请日：2020-11-09

Applicant: MediaTek Inc.

Inventor： Vladimir A. Muratov ,  William Plumb

IPC: H02J50/60 ,  H02J50/12 ,  H02J50/10

Abstract: Methods, apparatus and computer-readable storage media for performing foreign object detection (FOD) in a wireless power transfer system. A plurality of FOD measurements may be performed and processed to perform FOD.

公开(公告)号：US10193375B2

公开(公告)日：2019-01-29

申请号：US15346273

申请日：2016-11-08

Applicant: MediaTek Inc.

Inventor： Philip Frank Tustin ,  William Plumb ,  Patrick Stanley Riehl

IPC: H02J7/02 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80

Abstract: Methods and apparatus for providing closed loop current control in a wireless power transmitter. The method comprises adjusting a transmitter coil current generated by the wireless power transmitter based, at least in part, on first feedback reported by at least one wireless power receiver and second feedback based on a measurement of the transmitter coil current.

公开(公告)号：US09730090B2

公开(公告)日：2017-08-08

申请号：US14078789

申请日：2013-11-13

Applicant: MEDIATEK, INC.

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

IPC: H04W24/04 ,  H04W76/02 ,  H04W24/10 ,  H04W36/00

CPC classification number: H04W24/04 ,  H04W24/10 ,  H04W36/0083 ,  H04W76/18

Abstract: A method of reporting UE measurement state information in RLF report is provided. A UE performs radio measurements of a serving cell and neighbor cells in a mobile communication network. The UE evaluates a measurement reporting criteria and attempts to access the network to deliver a measurement report if the criteria is met. The UE then detects a radio link failure or a handover failure event and reconnects to the network by performing RRC reestablishment or RRC establishment. Finally, the UE transmits a failure event report to the network. The failure event report comprises UE measurement state information corresponds to the failure event. The UE measurement state information helps the network to determine whether to apply corrective actions to mitigate the failure.

公开(公告)号：US09220046B2

公开(公告)日：2015-12-22

申请号：US14474224

申请日：2014-09-01

Applicant: MEDIATEK INC.

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

IPC: H04B7/00 ,  H04W36/30 ,  H04W36/08 ,  H04W24/08 ,  H04W60/04 ,  H04W72/08 ,  H04W76/02 ,  H04W24/00 ,  H04W28/04 ,  H04W28/18 ,  H04W48/20 ,  H04W84/18 ,  H04W88/06

CPC classification number: 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

Abstract: 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.

Abstract translation: 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：US20150023200A1

公开(公告)日：2015-01-22

申请号：US14479602

申请日：2014-09-08

Applicant: MEDIATEK INC.

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

IPC: H04L5/00 ,  H04W24/08

CPC classification number: H04L5/0032 ,  H04L1/20 ,  H04W24/08 ,  H04W24/10 ,  H04W36/0094

Abstract: A method of UE RSRQ measurement precaution for interference coordination is provided. The UE receives radio signals of a neighbor cell under measurement. The neighbor cell applies a TDM silencing pattern for inter-cell interference coordination (TDM ICIC). The UE determines a measurement pattern that includes multiple subframes. The UE performs RSRQ measurements of the cell over multiple subframes and obtains multiple RSRQ measurement samples. The UE derives RSRQ measurement result by estimating the multiple RSRQ samples and applying a weighted average. RSRQ samples estimated to be more applicable are taken into account to more extent (e.g., applied with more weight), and/or RSRQ samples estimated to be less applicable are taken into account to less extent (e.g., applied with less weight, or discarded with zero weight). With UE precaution, a more predictable RSRQ measurement result is produced.

Abstract translation: 提供了一种用于干扰协调的UE RSRQ测量预防措施。 UE接收测量的相邻小区的无线电信号。 相邻小区对小区间干扰协调（TDM ICIC）应用TDM消隐模式。 UE确定包括多个子帧的测量模式。 UE通过多个子帧执行小区的RSRQ测量，并获得多个RSRQ测量样本。 UE通过估计多个RSRQ样本并应用加权平均值来导出RSRQ测量结果。 在更大程度上考虑到更多适用的RSRQ样本（例如，应用更多的权重），和/或估计不太适用的RSRQ样本在较少程度上被考虑（例如，应用较少的权重或丢弃 零重量）。 使用UE预防措施，产生更可预测的RSRQ测量结果。

公开(公告)号：US20190199142A1

公开(公告)日：2019-06-27

申请号：US16228556

申请日：2018-12-20

Applicant: MediaTek Inc.

Inventor： Vladimir A. Muratov ,  Patrick Stanley Riehl ,  William Plumb

IPC: H02J50/60 ,  H02J7/02 ,  H02J50/12

CPC classification number: H02J50/60 ,  H02J7/025 ,  H02J50/12

Abstract: An apparatus and method for performing foreign object detection for a wireless power transmitter. A matching network and transmit coil are energized, and a resonance is excited. The resonance is allowed to decay. A temporal characteristic of the decay is measured. The temporal characteristic is analyzed to determine whether a foreign object is coupled to an electromagnetic field generated by the transmit coil.

公开(公告)号：US10199881B2

公开(公告)日：2019-02-05

申请号：US15244107

申请日：2016-08-23

Applicant: MediaTek Inc.

Inventor： Vladimir A. Muratov ,  Patrick Stanley Riehl ,  William Plumb

IPC: H02J50/12 ,  H02J50/60 ,  H02J7/02

Abstract: An apparatus and method for performing foreign object detection for a wireless power transmitter. A matching network and transmit coil are energized, and a resonance is excited. The resonance is allowed to decay. A temporal characteristic of the decay is measured. The temporal characteristic is analyzed to determine whether a foreign object is coupled to an electromagnetic field generated by the transmit coil.

公开(公告)号：US09504082B2

公开(公告)日：2016-11-22

申请号：US14709479

申请日：2015-05-12

Applicant: MEDIATEK INC.

Inventor： Per Johan Mikael Johansson ,  Yih-Shen Chen ,  Tze-Ping Low ,  William Plumb

IPC: H04W76/02 ,  H04W36/08 ,  H04W36/24 ,  H04W48/00 ,  H04W40/36 ,  H04W36/00

CPC classification number: H04W76/19 ,  H04W36/0033 ,  H04W36/0055 ,  H04W36/0061 ,  H04W36/0072 ,  H04W36/08 ,  H04W36/24 ,  H04W40/36 ,  H04W48/17 ,  H04W76/18

Abstract: An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast NAS recovery process is applied to reduce the outage time in the target cell. In a second novel aspect, context fetching is used to reduce the outage time in the target cell. In a third novel aspect, a loss-less reestablishment procedure is proposed to reduce data loss during the connection recovery.

公开(公告)号：US09356707B2

公开(公告)日：2016-05-31

申请号：US14263166

申请日：2014-04-28

Applicant: MEDIATEK INC.

Inventor： I-Kang Fu ,  William Plumb

IPC: H04B15/00 ,  H04B1/10 ,  H04B1/403 ,  H04B1/525 ,  H04W52/24 ,  H04B1/48 ,  H04W4/00 ,  H04W72/04 ,  H04W76/04 ,  H04W88/06

CPC classification number: H04B15/00 ,  H04B1/1027 ,  H04B1/406 ,  H04B1/48 ,  H04B1/525 ,  H04B2001/485 ,  H04W4/80 ,  H04W52/244 ,  H04W72/0473 ,  H04W76/28 ,  H04W88/06

Abstract: A method to trigger in-device coexistence (IDC) interference mitigation is provided. A wireless device comprises a first radio module and a co-located second radio module. The first radio module measures a received radio signal based on a plurality of sampling instances. A control entity obtains Tx/Rx activity of the second radio module and informs Tx/Rx timing information to the first radio module. The first radio module determines a measurement result based on the obtained timing information. The first radio module triggers an IDC interference mitigation mechanism if the measurement result satisfies a configurable condition. In one embodiment, the first radio module reports IDC interference information and traffic pattern information of the second radio module to a base station for network-assisted coexistence interference mitigation. The IDC triggering mechanism prevents unnecessary and arbitrary IDC request from the device and thus improves network efficiency.

Abstract translation: 提供了一种触发设备间共存（IDC）干扰减轻的方法。 无线设备包括第一无线电模块和共同定位的第二无线电模块。 第一无线电模块基于多个采样实例测量接收到的无线电信号。 控制实体获得第二无线电模块的Tx / Rx活动，并向第一无线电模块通知Tx / Rx定时信息。 第一无线电模块基于获得的定时信息来确定测量结果。 如果测量结果满足可配置条件，则第一个无线电模块触发IDC干扰减轻机制。 在一个实施例中，第一无线电模块向基站报告第二无线电模块的IDC干扰信息和业务模式信息以用于网络协同共存干扰减轻。 IDC触发机制防止来自设备的不必要和任意的IDC请求，从而提高网络效率。

公开(公告)号：US09203574B2

公开(公告)日：2015-12-01

申请号：US14479602

申请日：2014-09-08

Applicant: MEDIATEK INC.

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

IPC: H04L5/00 ,  H04W24/10 ,  H04W24/08 ,  H04W36/00

CPC classification number: H04L5/0032 ,  H04L1/20 ,  H04W24/08 ,  H04W24/10 ,  H04W36/0094

Abstract: A method of UE RSRQ measurement precaution for interference coordination is provided. The UE receives radio signals of a neighbor cell under measurement. The neighbor cell applies a TDM silencing pattern for inter-cell interference coordination (TDM ICIC). The UE determines a measurement pattern that includes multiple subframes. The UE performs RSRQ measurements of the cell over multiple subframes and obtains multiple RSRQ measurement samples. The UE derives RSRQ measurement result by estimating the multiple RSRQ samples and applying a weighted average. RSRQ samples estimated to be more applicable are taken into account to more extent (e.g., applied with more weight), and/or RSRQ samples estimated to be less applicable are taken into account to less extent (e.g., applied with less weight, or discarded with zero weight). With UE precaution, a more predictable RSRQ measurement result is produced.

Abstract translation: 提供了一种用于干扰协调的UE RSRQ测量预防措施。 UE接收测量的相邻小区的无线电信号。 相邻小区对小区间干扰协调（TDM ICIC）应用TDM消隐模式。 UE确定包括多个子帧的测量模式。 UE通过多个子帧执行小区的RSRQ测量，并获得多个RSRQ测量样本。 UE通过估计多个RSRQ样本并应用加权平均值来导出RSRQ测量结果。 在更大程度上考虑到更多适用的RSRQ样本（例如，应用更多的权重），和/或估计不太适用的RSRQ样本在较少程度上被考虑（例如，应用较少的权重或丢弃 零重量）。 使用UE预防措施，产生更可预测的RSRQ测量结果。