公开(公告)号：US10159092B2

公开(公告)日：2018-12-18

申请号：US15054108

申请日：2016-02-25

Applicant: MEDIATEK INC.

Inventor： Shiang-Jiun Lin ,  Gilles Charbit ,  I-Kang Fu

IPC: H04W74/08 ,  H04L5/00 ,  H04L1/00 ,  H04W72/02 ,  H04L1/18

Abstract: Methods and apparatus are provided contention based uplink data transmission. In one novel aspect, the contention-based uplink data channel is used to transmit the data directly to the network. In one embodiment, the UE selects an UL data channel from a set of preconfigured uplink contention based data channels and sends the UL data transmission on the selected UL data channel. In one embodiment, the contention based UL data has a narrow bandwidth with a long CP such that the TA is not needed from the base station. In another embodiment, a small signaling payload is included in the CB UL data transmission if the size of the data contents cannot be fit in the UL data channel. In one embodiment, the signaling payload is the BSR. The UE, subsequently, receives an UL grant and sends the remaining data contents using the allocated data channel in the UL grant.

公开(公告)号：US09794839B2

公开(公告)日：2017-10-17

申请号：US14636441

申请日：2015-03-03

Applicant: MEDIATEK INC.

Inventor： Shiang-Jiun Lin ,  Yuanyuan Zhang ,  Per Johan Mikael Johansson

IPC: H04L1/00 ,  H04W36/00 ,  H04W24/04 ,  H04W76/02 ,  H04L5/00

CPC classification number: H04W36/0072 ,  H04L5/001 ,  H04W24/04 ,  H04W36/0055 ,  H04W36/0061 ,  H04W76/15 ,  H04W76/19

Abstract: A method of radio link monitoring (RLM) and radio link failure (RLF) handling over a small cell network is proposed. In a wireless network, a user equipment (UE) establishes a radio resource control (RRC) connection with a base station (eNB), which is UE anchor. The UE applies carrier aggregation for multiple component carriers (CCs) configured as multiple serving cells. The aggregated serving cells are served by the anchor eNB and other drift eNB(s). The UE performs RLM/RLF over PCELL and SCELL belonging to corresponding cell groups. When RLF happens in a serving cell, the UE and the eNB apply certain actions over the serving cell or all serving cells in the group. RLF procedures in anchor eNB and in drift eNB are proposed. Both UE side and network side behaviors are included.

公开(公告)号：US09794803B2

公开(公告)日：2017-10-17

申请号：US14157212

申请日：2014-01-16

Applicant: MEDIATEK, INC.

Inventor： Shiang-Jiun Lin ,  Chien-Hwa Hwang ,  Xiangyang Zhuang

IPC: H04W24/02 ,  H04L5/14 ,  H04W72/04 ,  H04L1/18 ,  H04W72/12 ,  H04W74/00 ,  H04W48/12

CPC classification number: H04W24/02 ,  H04L1/1825 ,  H04L1/1854 ,  H04L5/1438 ,  H04L5/1469 ,  H04W48/12 ,  H04W72/048 ,  H04W72/1289 ,  H04W74/006

Abstract: Solutions to support the coexistence of legacy UEs and new released UEs in adaptive TDD systems are proposed. Methods of TDD grouping, RACH (random access channel) resource allocation, and DL/UL data transmission and HARQ (Hybrid Automatic Repeat Request) process to serve legacy UEs without interfering the operation of new released UEs are proposed. With the methods proposed in this invention, both the legacy UEs and the new released UEs can be served in the adaptive TDD systems and the data transmission from the legacy UEs would not interfere the data reception of the new released UEs.

公开(公告)号：US09730152B2

公开(公告)日：2017-08-08

申请号：US14496148

申请日：2014-09-25

Applicant: MEDIATEK INC.

Inventor： Shiang-Jiun Lin ,  Xiangyang Zhuang ,  Chien-Hwa Hwang

IPC: H04W48/20 ,  H04W48/18 ,  H04W36/00 ,  H04L5/14 ,  H04W28/02 ,  H04W36/30 ,  H04W48/08 ,  H04W88/06

CPC classification number: H04W48/20 ,  H04L5/14 ,  H04L5/143 ,  H04L5/1469 ,  H04W28/0268 ,  H04W36/0022 ,  H04W36/0061 ,  H04W36/0072 ,  H04W36/0083 ,  H04W36/30 ,  H04W48/08 ,  H04W48/18 ,  H04W68/02 ,  H04W88/06

Abstract: To support the new characteristics where FDD carriers and TDD carriers provide different services with different QoS or with different coverage or with different mobility robustness, UE enhancements of FDD-TDD network are proposed. In one embodiment, a dual mode UE in idle mode camps on a source cell and determines a target cell based on the cn domain and/or additional paging information contained in an enhanced paging message. In another embodiment, a dual mode UE may establish an RRC connection with a source cell with TDD carrier, and later is handover or redirected to a target cell supporting voice over IMS. The handover or redirection is based on the cn domain and/or the additional paging information contained in the enhanced paging message.

公开(公告)号：US09252934B2

公开(公告)日：2016-02-02

申请号：US14713158

申请日：2015-05-15

Applicant: MEDIATEK INC.

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

IPC: H04L5/00 ,  H04W72/12 ,  H04W72/04 ,  H04W64/00 ,  H04L12/26 ,  H04W48/10

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.

公开(公告)号：US20160029392A1

公开(公告)日：2016-01-28

申请号：US14873302

申请日：2015-10-02

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Shiang-Jiun Lin ,  Min Wu ,  Xiangyang Zhuang

IPC: H04W72/04 ,  H04W52/10 ,  H04L5/14 ,  H04W52/08

CPC classification number: H04W52/365 ,  H04L1/1861 ,  H04L5/001 ,  H04L5/1469 ,  H04W52/08 ,  H04W52/10 ,  H04W52/146 ,  H04W52/221 ,  H04W52/325 ,  H04W52/34 ,  H04W52/48 ,  H04W52/58 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0473

Abstract: A method of separate accumulation in closed-loop power control in adaptive TDD systems is proposed. A UE obtains configuration information from a base station in an adaptive TDD system. Each radio frame comprises a plurality of subframes, which are configured into two or more subframe sets. The UE receives a transmit power control (TPC) command in a downlink subframe. The UE determines a power control adjustment state for an uplink subframe i based on the TPC command. The power control adjustment state of subframe i is accumulated from a power control adjustment state of a previous uplink subframe j, where subframe i and subframe j belong to the same subframe set. In one embodiment, subframe j is the closest previous uplink subframe with respect to uplink subframe i.

Abstract translation: 提出了一种在自适应TDD系统中闭环功率控制中单独累积的方法。 UE在自适应TDD系统中从基站获取配置信息。 每个无线电帧包括被配置成两个或多个子帧集合的多个子帧。 UE在下行链路子帧中接收发送功率控制（TPC）命令。 UE根据TPC命令确定上行链路子帧i的功率控制调整状态。 从前一个上行链路子帧j的功率控制调整状态累加子帧i的功率控制调整状态，其中子帧i和子帧j属于同一子帧组。 在一个实施例中，子帧j相对于上行链路子帧i是最近的上一个上行链路子帧。

公开(公告)号：US20150009877A1

公开(公告)日：2015-01-08

申请号：US14321810

申请日：2014-07-02

Applicant: MEDIATEK INC. ,  National Taiwan University

Inventor： Yi-Han Chiang ,  Yu-Chun Chen ,  Kun-Lin Ho ,  Po-Han Huang ,  Po-Han Chiang ,  Chen-Yi Chang ,  Wan-Jiun Liao ,  Shiang-Jiun Lin

IPC: H04W52/02 ,  H04W36/22

CPC classification number: H04W52/0206 ,  H04W36/0072 ,  H04W36/165 ,  H04W84/045 ,  Y02D70/00

Abstract: Apparatus and method are provided for small cell energy saving. In one novel aspect, switch-off-request is broadcasted by the small cell detecting the low-load condition. The small cells upon receiving the switch-off-request message enter the frozen state, which prevents the small cells from switching off. In another novel aspect, the small cell in the low-load condition request measurement reports from the UEs. The UEs replies with the measurement-reports message, which includes the detected neighboring IDs and the UE's traffic load. The low-load small cell includes the information derived from the measurement-reports in the switch-off-request message. In another novel aspect, the small cell broadcasts the switch-on-request message. Upon receiving switch-on-acknowledge messages from switched-off neighboring small cells, the small cell selects one or more target cells to send the cell-activation-request. The switched-off small cells, upon receiving the request to switch-on, uses a cost function to determine whether to switch on.

Abstract translation: 提供了用于小电池节能的装置和方法。 在一个新颖的方面，关闭请求由检测低负载条件的小单元广播。 接收到关闭请求消息后的小小区进入冻结状态，防止小小区关闭。 在另一个新颖的方面，低负载条件下的小小区请求来自UE的测量报告。 UE用测量报告消息进行回复，该消息包括检测到的相邻ID和UE的业务负载。 低负载小小区包括从关闭请求消息中的测量报告导出的信息。 在另一个新颖的方面，小小区广播接通请求消息。 一旦接收到从关闭的相邻小小区的接通确认消息，小小区选择一个或多个目标小区来发送小区激活请求。 关闭小型小区在接收到启动请求后，使用成本函数来确定是否打开。

公开(公告)号：US20140133465A1

公开(公告)日：2014-05-15

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: H04W36/20

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.

Abstract translation: 提供了一种在RLF报告中报告UE测量状态信息的方法。 UE在移动通信网络中执行服务小区和相邻小区的无线电测量。 如果满足标准，则UE评估测量报告标准并尝试访问网络以递送测量报告。 然后，UE通过执行RRC重建或RRC建立来检测无线电链路故障或切换失败事件并重新连接到网络。 最后，UE向网络发送故障事件报告。 故障事件报告包括对应于故障事件的UE测量状态信息。 UE测量状态信息有助于网络确定是否应用纠正措施来减轻故障。

公开(公告)号：US11039477B2

公开(公告)日：2021-06-15

申请号：US16192754

申请日：2018-11-15

Applicant: MediaTek Inc.

Inventor： Gilles Charbit ,  Shiang-Jiun Lin ,  Li-Chuan Tseng ,  Per Johan Mikael Johansson

IPC: H04W74/08 ,  H04L5/00 ,  H04L1/00 ,  H04W72/04 ,  H04W72/14 ,  H04W88/06 ,  H04W72/00 ,  H04L1/08

Abstract: Various examples and schemes pertaining to NB-IoT physical random access channel (PRACH) resource partitioning and multiple grants in random access response (RAR) for early data transmission (EDT are described. A network node schedules multiple grants for EDT during a random access (RA) procedure with a user equipment (UE). The network node transmits to the UE a message indicating the multiple grants mapped to a maximum broadcast transport block size (TBS) configured for each of one or more preamble resource of a plurality of preamble resources. The UE calculates a TBS that fits an uplink (UL) data packet of the UE. The UE selects one or more PRACH resources for EDT for the TBS based on a wireless communication coverage of the UE by the network node. The UE transmits to the network node in the RA procedure a first message (Msg1) indicating the selected one or more PRACH resources.

公开(公告)号：US20200053695A1

公开(公告)日：2020-02-13

申请号：US16535046

申请日：2019-08-07

Applicant: MediaTek Inc.

Inventor： Gilles Charbit ,  Li-Chuan Tseng ,  Shiang-Jiun Lin ,  Per Johan Mikael Johansson

IPC: H04W68/10 ,  H04W84/02 ,  H04W8/18 ,  H04W76/28 ,  H04W76/27

Abstract: Various examples and schemes pertaining to narrowband reference signal (NRS) transmission on non-anchor carriers in narrowband IoT (NB-IoT) are described. A wireless network indicates a subset of one or more paging groups of user equipment (UEs) among a plurality of UEs in an NB-IoT cell. The wireless network then transmits one or more narrowband reference signals (NRSs) in one or more paging frames or one or more paging occasions associated with the subset of one or more paging groups.