公开(公告)号：US10939442B2

公开(公告)日：2021-03-02

申请号：US16373881

申请日：2019-04-03

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin

IPC: H04W72/04 ,  H04W24/04 ,  H04W74/02 ,  H04W74/08 ,  H04W72/14 ,  H04W76/11 ,  H04W16/28 ,  H04W24/08 ,  H04W48/14 ,  H04W74/00

Abstract: Solutions are proposed to handle PRACH resource and beam selection under the following scenarios. First, a CFRA procedure is initiated, but all beams associated with the CFRA resource is below a RSRP threshold and CBRA fallback is not supported. UE continues to perform CFRA by selecting any downlink beam associated with dedicated PRACH resource, and then select dedicated PRACH resource associated with the selected downlink beam; second, a CFRA procedure is initiated but the active UL BWP is not paired with the active DL BWP. Upon CFRA initiation, UE uses current active UL and DL BWP to perform CFRA, and switches to another BWP pair upon all beams associated with the CFRA resource are below a RSRP threshold; third, a CBRA procedure is initiated but the active UL BWP is not configured with PRACH resource. UE selects a special UL/DL BWP to perform the CBRA procedure.

公开(公告)号：US20180376428A1

公开(公告)日：2018-12-27

申请号：US16014242

申请日：2018-06-21

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin ,  Chiou-Wei Tsai

IPC: H04W52/14 ,  H04W72/04 ,  H04W74/08 ,  H04W16/28

Abstract: A method of physical random-access channel (PRACH) preamble retransmission for new radio (NR) is proposed. A power ramping counter is introduced in addition to a preamble transmission counter for a RACH procedure. A UE determines the preamble TX power based on the power ramping counter. The UE updates the power ramping counter based on each PRACH transmission condition, which comprises both a selected DL beam and a selected UL beam for preamble transmission. The power ramping counter is incremented by one if the transmission condition remains the same as a previous PRACH preamble transmission. On the other hand, the power ramping counter remains unchanged if the transmission condition is different from a previous PRACH preamble transmission.

公开(公告)号：US20180176136A1

公开(公告)日：2018-06-21

申请号：US15844730

申请日：2017-12-18

Applicant: MEDIATEK INC.

Inventor： Yung-Chun Yang ,  Cheng-Jie Tsai ,  Tsern-Huei Lee ,  Guan-Yu Lin ,  Yung-Hsiang Liu ,  Jun-Hua Chou ,  Chia-Chun Hsu

IPC: H04L12/801 ,  H04L12/807

CPC classification number: H04L47/12 ,  H04L47/193 ,  H04L47/27 ,  H04L47/283 ,  H04L47/30

Abstract: Apparatus and methods are provided for TCP bufferbloat resolution. In one novel aspect, the TCP client monitors a TCP throughput, determines a TCP throughput stability based on a changing rate of the TCP throughput, adjusts a RWND size dynamically based on the determined TCP throughput stability, and sends the dynamically adjusted RWND size to the TCP server for flow control. In one embodiment, the TCP throughput is stable if the changing rate of an increase or decrease of the TCP throughput is smaller than a threshold, otherwise, the TCP throughput is unstable. The TCP client decreases the RWND size if the TCP throughput is stable, otherwise the TCP client increases the RWND size. In one embodiment, the increase of the RWND size uses the default RWND size adjustment method and the decrease of the RWND size is further depending on the increasing or decreasing state of the TCP client.

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

IPC: H04W74/08 ,  H04W4/00

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。

公开(公告)号：US12108299B2

公开(公告)日：2024-10-01

申请号：US17734305

申请日：2022-05-02

Applicant: MediaTek INC.

Inventor： Ming-Yuan Cheng ,  Nathan Edward Tenny ,  Guan-Yu Lin ,  Xuelong Wang

IPC: H04W36/30 ,  H04W36/22 ,  H04W48/10 ,  H04W88/04 ,  H04W92/10 ,  H04W92/18

CPC classification number: H04W36/30 ,  H04W36/22 ,  H04W48/10 ,  H04W88/04 ,  H04W92/10 ,  H04W92/18

Abstract: Mechanism of relay UE discovery and relay UE selection and reselection for remote UE data transmission with a serving base station via relay UE is proposed. A method operable for relay UE selection and reselection of remote UE is provided. The UE considers additional criteria such as relay load other than purely radio signal quality (e.g., RSRP) criteria. The relay load can serve different purpose for relay UE and remote UE. The relay load can be the criteria for UE to become a relay UE or not. It can be the criteria for a remote UE to select another UE as its relay UE.

公开(公告)号：US20240147506A1

公开(公告)日：2024-05-02

申请号：US18486065

申请日：2023-10-12

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin ,  Chia-Hao Yu

IPC: H04W72/40 ,  H04W28/26 ,  H04W76/14

CPC classification number: H04W72/40 ,  H04W28/26 ,  H04W76/14

Abstract: Apparatus and methods are provided for dynamic sidelink (SL) resource allocation. In one novel aspect, one or more uplink (UL) resources are allocated for SL transceiving. In one embodiment, the UE establishes an SL connection with an SL peer UE, receives an allocation indication indicating one or more UL resources are available as shared SL resources for SL transceiving, wherein the allocation indication is originated from a gNB, and performs SL data transceiving with the SL peer UE using the one or more UL resources indicated in the allocation indication. In one embodiment, the UE receives the allocation indication through the Uu connection by unicast, multicast or broadcast. In one embodiment, the shared SL resources are indicated by RB ID or by SL grants. In one embodiment, conditions for using the shared SL resources are included in the allocation indication or are indicated in a separate RRC configuration.

公开(公告)号：US11490365B2

公开(公告)日：2022-11-01

申请号：US17065643

申请日：2020-10-08

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin

IPC: H04W4/00 ,  H04W72/02 ,  H04W72/12 ,  H04L1/18 ,  H04W72/10

Abstract: A method of joint restriction on resource selection and data multiplexing over sidelink transmission is proposed. The joint restriction method includes four steps of A, B, C, D, and the order of the steps can be different depending on different scenarios. In step A, UE selects a resource pool that satisfies certain configuration. In step B, UE determines resource for transport block (TB) transmission. In step C, UE performs logical channel prioritization (LCP) procedure. In step D, UE provides information of the TB to receiver UE(s) if needed. Under this generic model, the selecting of resource and data are jointly considered to satisfy both resource restriction and data QoS requirements.

公开(公告)号：US20220095411A1

公开(公告)日：2022-03-24

申请号：US17484257

申请日：2021-09-24

Applicant: MediaTek INC.

Inventor： Guan-Yu Lin ,  Xuelong Wang ,  Nathan Edward Tenny

IPC: H04W76/27 ,  H04W76/14 ,  H04W80/02

Abstract: Apparatus and methods are provided to support SRB0 transmission for L2 UE-to-NW relay. In one novel aspect, the SRB0 message includes remote UE ID by the remote UE or relay UE during forwarding the SRB message. In one novel aspect, when perform SRB0 transmission over PC5 interface, the relay UE and remote UE apply default bearer/default RLC channel for SRB0 transmission. In one novel aspect, the relay UE and base station exchange the forwarded UL SRB0 message and DL SRB0 message via contained of RRC message over UL-DCCH and DL-DCCH separately. In one novel aspect, the message in response to the transmission of SRB0 from the remote UE further includes C-RNTI for the remote UE if this remote UE is initiating RRC Setup or RRC Resume procedure.

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：US10939362B2

公开(公告)日：2021-03-02

申请号：US16242262

申请日：2019-01-08

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin ,  Chia-Chun Hsu

IPC: H04W4/00 ,  H04W48/14 ,  H04W74/08 ,  H04W80/02 ,  H04W88/12 ,  H04W88/02

Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a service network. The controller performs the following during a contention-based random access procedure: transmitting a first message comprising a System Information (SI) request, to the service network via the wireless transceiver; receiving a second message for a contention resolution from the service network via the wireless transceiver in response to transmitting the first message; determining whether the contention resolution is successful according to the second message; and indicating a reception of an acknowledgement for the SI request to an upper layer of a Media Access Control (MAC) layer in response to determining that the contention resolution is successful.