公开(公告)号：US09516532B2

公开(公告)日：2016-12-06

申请号：US14168369

申请日：2014-01-30

Applicant: MEDIATEK, INC.

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

IPC: H04W24/10 ,  H04L5/00 ,  H04W72/12 ,  H04W72/14 ,  H04W52/36

CPC classification number: H04W24/10 ,  H04L5/0096 ,  H04L5/0098 ,  H04W52/365 ,  H04W72/1284 ,  H04W72/14

Abstract: 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.

Abstract translation: 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：US20160234852A1

公开(公告)日：2016-08-11

申请号：US15016431

申请日：2016-02-05

Applicant: MEDIATEK INC.

Inventor： Li-Chun Ko ,  Yih-Shen Chen ,  Yu-Ting Chen ,  Chung-Wei Wang ,  Yi-Chien Wang

IPC: H04W72/08 ,  H04W16/14 ,  H04L5/22 ,  H04W76/04 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04W72/082 ,  H04L5/0005 ,  H04L5/22 ,  H04W16/14 ,  H04W72/0413 ,  H04W72/044 ,  H04W76/28 ,  H04W88/06

Abstract: A UE controls in-device coexistence (IDC) indication message generation to mitigate potential throughput impact on UE to maintain UE performance as much as possible. Under the proposed method, FDM-based solution is always preferred by the UE. Based on the IDC indication message generated by the UE, a network applies an IDC interference mitigation solution that prioritizes FDM-based solution. Specifically, the UE first sends an IDC message requesting FDM-based solution. In case the serving eNB does not respond, the UE sends a new IDC message by alternating IDC option. Even if a TDM-based solution has been received, the UE may continue requesting FDM-based solution to gain UE performance.

Abstract translation: UE控制设备内共存（IDC）指示消息生成，以减轻对UE的潜在吞吐量影响，以尽可能地维持UE的性能。 在所提出的方法下，UE始终优先采用基于FDM的解决方案。 基于UE生成的IDC指示消息，网络应用基于FDM的解决方案优先级的IDC干扰减轻解决方案。 具体地，UE首先发送请求基于FDM的解决方案的IDC消息。 在服务eNB不响应的情况下，UE通过交替的IDC选项发送新的IDC消息。 即使已经接收到基于TDM的解决方案，UE也可以继续请求基于FDM的解决方案来获得UE的性能。

公开(公告)号：US09270433B2

公开(公告)日：2016-02-23

申请号：US14450430

申请日：2014-08-04

Applicant: MEDIATEK INC.

Inventor： Yih-Shen Chen ,  Chih-Yuan Lin

IPC: H04W4/00 ,  H04L5/00 ,  H04W72/14

CPC classification number: H04L5/0051 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0091 ,  H04L5/0094 ,  H04W72/14

Abstract: A method of multi-set RRC signaling for ap-SRS configuration is provided to enhance ap-SRS flexibility. An eNB transmits a plurality of sets of UE-specific SRS parameters to a UE via upper layer messaging in a multi-carrier wireless communication system. The eNB also determines triggering information of a selected set of UE-specific SRS parameters and an indicated carrier for the UE. The eNB then transmits an uplink or downlink grant over a primary carrier, the grant comprises triggering information for the UE to send an ap-SRS over the indicated carrier using the selected set of UE-specific SRS parameters. In one embodiment of joint signaling, the plurality of sets of UE-specific SRS parameters are signaled together in a single RRC transmission. In another embodiment of separate signaling, each set of UE-specific SRS parameters is signaled independently.

Abstract translation: 提供了用于ap-SRS配置的多集RRC信令的方法以增强ap-SRS灵活性。 eNB在多载波无线通信系统中经由上层消息传送向UE发送多组UE特定的SRS参数。 eNB还确定UE特定SRS参数的所选集合的触发信息以及针对UE的所指示的载波。 eNB然后通过主载波发送上行链路或下行链路许可，该许可包括触发信息，以使UE使用所选择的UE专用SRS参数集来在所指示的载波上发送ap-SRS。 在联合信令的一个实施例中，在单个RRC传输中将多组UE特定SRS参数一起发信号通知。 在单独信令的另一个实施例中，UE集合的特定SRS参数被独立地发信号通知。

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：US09220072B2

公开(公告)日：2015-12-22

申请号：US14584493

申请日：2014-12-29

Applicant: MEDIATEK INC.

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

IPC: G01R31/08 ,  H04W52/24 ,  H04W52/34 ,  H04W52/36 ,  H04W72/04

CPC classification number: H04W52/243 ,  H04W52/34 ,  H04W52/365 ,  H04W52/367 ,  H04W52/38 ,  H04W72/048

Abstract: 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.

公开(公告)号：US20150334731A1

公开(公告)日：2015-11-19

申请号：US14753699

申请日：2015-06-29

Applicant: MEDIATEK INC.

Inventor： Yih-Shen Chen ,  Per Johan Mikael Johansson

IPC: H04W72/12 ,  H04W76/02 ,  H04W72/04 ,  H04W72/08 ,  H04W24/08

CPC classification number: H04W72/1231 ,  H04B7/0626 ,  H04W24/08 ,  H04W36/0088 ,  H04W36/0094 ,  H04W48/02 ,  H04W72/0406 ,  H04W72/082 ,  H04W72/085 ,  H04W74/0833 ,  H04W74/0866 ,  H04W76/10 ,  H04W76/28 ,  H04W84/045

Abstract: A method of inter-cell interference coordination is provided for UE measurements and network access procedure. In a first embodiment, a UE in idle mode performs measurements on received radio signals applying a simplified radio resource restriction for interference coordination. The UE determines the restricted radio resource without receiving explicit measurement configuration. In a second embodiment, during various phases of a network access procedure, the UE indicates its interference status and/or additional interference information to its serving base station to enhance interference coordination. In a third embodiment, the UE in connected mode performs measurements on both interference-protected transmission resources and non-interference-protected transmission resources. The UE measurement results are used for scheduling, radio link monitoring, and/or mobility management to increase radio spectrum efficiency and to improve user experience.

公开(公告)号：US20150334722A1

公开(公告)日：2015-11-19

申请号：US14753751

申请日：2015-06-29

Applicant: MEDIATEK INC.

Inventor： Yih-Shen Chen ,  Per Johan Mikael Johansson

IPC: H04W72/08 ,  H04W48/02 ,  H04B7/06

CPC classification number: H04W72/1231 ,  H04B7/0626 ,  H04W24/08 ,  H04W36/0088 ,  H04W36/0094 ,  H04W48/02 ,  H04W72/0406 ,  H04W72/082 ,  H04W72/085 ,  H04W74/0833 ,  H04W74/0866 ,  H04W76/10 ,  H04W76/28 ,  H04W84/045

Abstract: A method of inter-cell interference coordination is provided for UE measurements and network access procedure. In a first embodiment, a UE in idle mode performs measurements on received radio signals applying a simplified radio resource restriction for interference coordination. The UE determines the restricted radio resource without receiving explicit measurement configuration. In a second embodiment, during various phases of a network access procedure, the UE indicates its interference status and/or additional interference information to its serving base station to enhance interference coordination. In a third embodiment, the UE in connected mode performs measurements on both interference-protected transmission resources and non-interference-protected transmission resources. The UE measurement results are used for scheduling, radio link monitoring, and/or mobility management to increase radio spectrum efficiency and to improve user experience.

Abstract translation: 为UE测量和网络访问过程提供了小区间干扰协调的方法。 在第一实施例中，处于空闲模式的UE对接收到的无线电信号执行测量，以应用用于干扰协调的简化的无线电资源限制。 UE在不接收明确的测量配置的情况下确定受限的无线电资源。 在第二实施例中，在网络接入过程的各个阶段期间，UE向其服务基站指示其干扰状态和/或附加干扰信息以增强干扰协调。 在第三实施例中，连接模式的UE对受干扰保护的传输资源和无干扰保护的传输资源进行测量。 UE测量结果用于调度，无线链路监控和/或移动性管理，以提高无线电频谱效率并改善用户体验。

公开(公告)号：US20150257178A1

公开(公告)日：2015-09-10

申请号：US14198892

申请日：2014-03-06

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Yu-Syuan Jheng ,  Wei-Chiang Peng ,  Chia-Hung Tsai ,  Yih-Shen Chen

IPC: H04W76/02 ,  H04W72/04

CPC classification number: H04W76/11 ,  H04L65/1006 ,  H04L65/103 ,  H04L65/104 ,  H04L65/1069 ,  H04L65/1096 ,  H04L65/80

Abstract: Methods and apparatus are provided for a voice over LTE system to shorten the call set up time. In one novel aspect, the mobile origination (MO) UE starts the UE-initiated dedicated resource allocation before receiving any responses from the remote UE. In another embodiment, the mobile termination (MT) UE starts the UE-initiated dedicated resource allocation upon receiving the INVITE from the remote UE. In one embodiment, the UE adjusts the timeout value based on the PLMN information in its PLMN database. The timeout value can be set to be zero if early reservation is allowed. Upon timer expires, the UE starts UE-initiated dedicated resource allocation. In one novel aspect, the MO UE retrieves the codec information of a remote UE from its peer profile information database and uses a matching codec in its INVITE message. In another embodiment, the MT MO includes the SDP answer in its 180 RINGING message.

Abstract translation: 为LTE系统的语音提供方法和装置，以缩短呼叫建立时间。 在一个新颖的方面，移动发起（MO）UE在接收到来自远程UE的任何响应之前启动UE发起的专用资源分配。 在另一个实施例中，移动终端（MT）UE在从远程UE接收到INVITE时启动UE发起的专用资源分配。 在一个实施例中，UE基于其PLMN数据库中的PLMN信息来调整超时值。 如果允许提前预约，超时值可以设置为零。 定时器超时后，UE启动UE发起的专用资源分配。 在一个新颖的方面，MO UE从其对等体简档信息数据库中检索远程UE的编解码器信息，并在其INVITE消息中使用匹配的编解码器。 在另一个实施例中，MT MO包括其180RINGING消息中的SDP应答。

公开(公告)号：US20150245406A1

公开(公告)日：2015-08-27

申请号：US14709480

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 ,  H04W40/36 ,  H04W36/00

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：US20150103752A1

公开(公告)日：2015-04-16

申请号：US14052619

申请日：2013-10-11

Applicant: MEDIATEK, INC.

Inventor： Chia-Hao Yu ,  Ju-Ya Chen ,  Yih-Shen Chen

IPC: H04L1/18 ,  H04L5/00 ,  H04L12/861

CPC classification number: H04L49/9005 ,  H04L1/1822 ,  H04L1/1874 ,  H04L5/001 ,  H04L5/0055

Abstract: A user equipment (UE) receives and decodes a first erroneous transport block (TB) from a base station in a mobile communication network. The UE allocates a first soft buffer having a first buffer size. The first soft buffer is associated with a first HARQ process for storing the first TB. The UE then receives and decodes a second erroneous TB from the base station. The UE allocates a second soft buffer having a second buffer size. The second soft buffer is associated with a second HARQ process for storing the second TB. The UE releases a portion of the first soft buffer to be allocated as part of the second soft buffer. The dynamic buffer allocation method reduces mismatch between rate matching and soft buffer storing when the total number of HARQ processes is small. In addition, more HARQ processes can be supported when the corresponding TB size is small.

Abstract translation: 用户设备（UE）从移动通信网络中的基站接收并解码第一错误传输块（TB）。 UE分配具有第一缓冲器大小的第一软缓冲器。 第一软缓冲器与用于存储第一TB的第一HARQ过程相关联。 然后，UE从基站接收并解码第二个错误TB。 UE分配具有第二缓冲器大小的第二软缓冲器。 第二软缓冲器与用于存储第二TB的第二HARQ进程相关联。 UE释放要作为第二软缓冲器的一部分分配的第一软缓冲器的一部分。 当HARQ进程的总数小时，动态缓冲器分配方法减少了速率匹配和软缓冲存储之间的不匹配。 另外，当对应的TB大小小时，可以支持更多的HARQ进程。