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公开(公告)号：US20170289970A1
公开(公告)日：2017-10-05
申请号：US15473622
申请日：2017-03-30
Applicant: MEDIATEK INC.
Inventor： Weidong Yang , Yih-Shen Chen , Chien-Chang Li , Bo-Si Chen
IPC: H04W72/04
CPC classification number: H04W72/0406 , H04L5/0007 , H04L5/0044 , H04L5/0087 , H04L5/0092 , H04W52/146 , H04W72/042 , H04W72/0446 , H04W72/085 , H04W72/10 , H04W84/042
Abstract: Methods and apparatus are provided for control overhead reduction. The UE configures one or more short transmission time interval regions over a normal TTI region shared by the UE and one or more other, each UE includes a self-contained control information sPDCCH occupying a control information region. The UE detects a cover signal, which indicates one or more resource elements in the sPDCCH control-information region that can be used for data transmission. The UE obtains data transmission from the REs in the SPDCCH control information region based on the detected cover signal. In one embodiment, the cover signal is a dedicated signal. In another embodiment, the cover signal is a common signal. In yet another embodiment, the cover signal is encoded in a downlink control information (DCI) intended for the UE. In one embodiment, the cover signal indicates one or more CCE REs to be excluded for data transmission.
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公开(公告)号：US20170238342A1
公开(公告)日：2017-08-17
申请号：US15433492
申请日：2017-02-15
Applicant: MEDIATEK INC.
Inventor： Weidong Yang , Bo-Si Chen , Chien-Chang Li , Yih-Shen Chen , Pavan Santhana Krishna Nuggehalli
CPC classification number: H04W74/04 , H04W16/14 , H04W72/042 , H04W72/087 , H04W72/1268 , H04W72/1289 , H04W74/006 , H04W74/0808 , H04W76/10
Abstract: A method of channel access procedure and QoS provisioning is proposed. When more than one user equipments (UEs) contend uplink transmission for a given time slot in an unlicensed band, uplink listen-before-talk (LBT) scheme should perform in a proper way to reflect service prioritization. The base station first determines the Channel Access Priority (CAP) for uplink LBT, and then signals such CAP to the UE via PDCCH. Upon receiving the CAP, the UE performs LBT procedure with corresponding CAP before uplink transmission. For example, the CAP can be determined based on QoS class identifier (QCI) of the radio bearer or based on the MAC layer logical channel prioritization (LCP).
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公开(公告)号：US09730097B2
公开(公告)日：2017-08-08
申请号：US13947379
申请日：2013-07-22
Applicant: MEDIATEK, INC.
Inventor： Chia-Hao Yu , Yih-Shen Chen
IPC: H04W24/10
CPC classification number: H04W24/10 , Y02D70/1242 , Y02D70/1262 , Y02D70/24
Abstract: An effective SCELL activation procedure is proposed to reduce the SCELL activation time. For carrier aggregation, a secondary cell (SCELL) needs to be configured and then activated before a UE can perform normal operation. In a first embodiment, the UE performs measurements on a list of candidate SCELLs before SCELL configuration. In a second embodiment, the UE performs measurements on a configured SCELL with high priority after the SCELL is configured. In a third embodiment, the UE performs deactivated-state SCELL measurements with adaptive SCELL measurement interval based on a configured measurement cycle and a state machine. Small SCELL activation time allows energy saving and network scheduling gain.
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公开(公告)号：US09661510B2
公开(公告)日：2017-05-23
申请号：US13688124
申请日：2012-11-28
Applicant: MEDIATEK, INC.
Inventor： Per Johan Mikael Johansson , Shiang-Jiun Lin , Yih-Shen Chen , William Plumb
CPC classification number: H04W24/02 , H04L41/0631 , H04L41/0686 , H04W24/04 , H04W36/00 , H04W36/14 , H04W36/36 , H04W76/19
Abstract: A method of inter-RAT failure event report is proposed. A UE detects a failure event in a first cell served by a first base station, and the first cell belongs to a first RAT. The failure event may include a radio link failure or a handover failure. The UE then performs an RRC establishment procedure with a second cell served by a second base station, and the second cell belongs to a second RAT. After the RRC establishment, the UE transmits a failure event report to the wireless network. The failure event can be a radio link failure, or be associated with a mobility command such as a handover command. By providing more reliable information in the failure event report than a network solution could provide, inter-RAT mobility performance can be improved.
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公开(公告)号：US20160338068A1
公开(公告)日：2016-11-17
申请号：US15152771
申请日：2016-05-12
Applicant: MEDIATEK INC.
Inventor： Ming-Yuan Cheng , Yih-Shen Chen , Chie-Ming Chou , Pavan Santhana Krishna Nuggehalli , Chia-Chun Hsu
CPC classification number: H04W28/22 , H04L1/0002 , H04L1/0015 , H04L1/0025 , H04L1/0026 , H04L47/14 , H04W28/0236 , H04W28/08 , H04W88/06
Abstract: LWA (LTE/WLAN Aggregation) is a tight integration at radio level which allows for real-time channel and load aware radio resource management across WLAN and LTE to provide significant user perceived throughput (UPT) improvement. When enabling LWA, packets are routed to a base station (eNB) for performing PDCP functionalities as an LTE PDU. Afterwards, the eNB can dispatch the PDU either delivered over LTE link or WLAN link. The UPT improvement depends on how the eNB dispatches the PDU over LTE link or WLAN link. In one novel aspect, the eNB can acquire channel information, load information, and throughput estimation regarding with WLAN link and LTE link. As a result, the eNB can optimize UPT and LWA PDU dispatching algorithm.
Abstract translation: LWA（LTE / WLAN聚合）是无线电级别的紧密集成，其允许跨WLAN和LTE的实时信道和负载感知无线电资源管理，以提供显着的用户感知吞吐量（UPT）改进。 当启用LWA时，分组被路由到用于执行作为LTE PDU的PDCP功能的基站（eNB）。 之后，eNB可以通过LTE链路或WLAN链路发送PDU。 UPT的改进取决于eNB如何通过LTE链路或WLAN链路分派PDU。 在一个新颖的方面，eNB可以获取关于WLAN链路和LTE链路的信道信息，负载信息和吞吐量估计。 因此，eNB可以优化UPT和LWA PDU调度算法。
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Patent Agency Ranking
公开(公告)号：US09462618B2
公开(公告)日：2016-10-04
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
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。
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公开(公告)号：US09462528B2
公开(公告)日：2016-10-04
申请号：US14953753
申请日：2015-11-30
Applicant: MEDIATEK INC.
Inventor： Yih-Shen Chen , Chia-Chun Hsu , William Plumb , Michael Roberts
IPC: H04W4/00 , H04W36/30 , H04W36/08 , H04W24/08 , H04W60/04 , H04W72/08 , H04W76/02 , H04W24/10 , H04W36/00 , 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.
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公开(公告)号：US20160286527A1
公开(公告)日：2016-09-29
申请号：US15172258
申请日：2016-06-03
Applicant: MEDIATEK INC.
Inventor： Chia-Hao Yu , Chia-Chun Hsu , Yih-Shen Chen , Chien-Chun Huang-Fu , Yu-Syuan Jheng , Chia-Hung Tsai
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. In one embodiment, the access information comprises mapping information between the TMGI and the communication group ID.
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。 在一个实施例中，访问信息包括TMGI和通信组ID之间的映射信息。
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公开(公告)号：US20160143084A1
公开(公告)日：2016-05-19
申请号：US15000264
申请日：2016-01-19
Applicant: MEDIATEK INC.
Inventor： Pei-Kai Liao , Yih-Shen Chen
CPC classification number: H04W76/27 , H04L1/1812 , H04L5/001 , H04L5/0035 , H04L5/0053 , H04L5/0094 , H04W16/32 , H04W24/04 , H04W36/08 , H04W72/0406 , H04W72/0413 , H04W72/042 , H04W72/0426 , H04W72/1289 , H04W74/0833 , H04W88/02 , H04W88/08
Abstract: Methods of multi-point carrier aggregation configuration and data forwarding are disclosed. In one embodiment of the invention, a primary connection is established between a UE and a primary base station in a primary cell with a first UE-ID. A second connection is configured between the UE and a second base station in a secondary cell with a second UE-ID. Component carriers from the primary and the second connections are configured and aggregated. Mobility management functions are performed on the primary connection. In another embodiment of the current invention, a first UE data is received from a primary connection with a UE connecting to a first base station, a second UE data is received from a second base station. The first UE data and the second UE data are combined. A third UE data from a network entity is distributed to the first and the second base station.
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公开(公告)号：US20160143063A1
公开(公告)日：2016-05-19
申请号：US15006427
申请日：2016-01-26
Applicant: MEDIATEK INC. , National Taiwan University
Inventor： Guan-Yu Lin , Hung-Yu Wei , Yih-Shen Chen , Chia-Chun Hsu
CPC classification number: H04W74/0833 , H04W4/70 , H04W48/06 , H04W74/006 , H04W74/085 , H04W84/04
Abstract: An adaptive RACH operation is proposed for machine-type communications (MTC) in a 3GPP wireless network. The adaptive RACH operation is based on context information to reduce RACH collision probability, to control network overload, and to enhance system performance. The context information includes device related information and network related information. Device related information includes device type and service or application type. Network related information includes network load information and historical statistics information. Based on the context information, an MTC device adjusts various network access and RACH parameters by applying adaptive RACH operation in different levels. For example, in the application level and the network level, the MTC device adjusts its access probability or RACH backoff time for RACH access. In the radio access network (RAN) level, the MTC device adjusts its access probability or RACH backoff time, or transmits RACH preambles using adjusted RACH radio resources and preambles.
Abstract translation: 针对3GPP无线网络中的机器型通信（MTC）提出了一种自适应RACH操作。 自适应RACH操作基于上下文信息来减少RACH冲突概率，控制网络过载，并提高系统性能。 上下文信息包括设备相关信息和网络相关信息。 设备相关信息包括设备类型和服务或应用类型。 网络相关信息包括网络负载信息和历史统计信息。 基于上下文信息，MTC设备通过在不同级别应用自适应RACH操作来调整各种网络接入和RACH参数。 例如，在应用级别和网络级别中，MTC设备调整其接入概率或RACH接入的RACH退避时间。 在无线电接入网络（RAN）级别中，MTC设备调整其接入概率或RACH退避时间，或者使用调整的RACH无线电资源和前导码来发送RACH前导码。
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