公开(公告)号：US10798642B2

公开(公告)日：2020-10-06

申请号：US15862591

申请日：2018-01-04

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin ,  Chia-Chun Hsu ,  Per Johan Mikael Johansson

IPC: H04W48/10 ,  H04W48/14 ,  H04L12/18 ,  H04W72/14 ,  H04W48/12

Abstract: Apparatus and methods are provided for on-demand system information (SI) delivery. In one novel aspect, an indicator in the minimum system information (MSI) indicates whether an SI or an SI group is delivered with broadcast or unicast. In one embodiment, the UE receives a MSI, obtains from the MSI the other SI (OSI) delivery mode indicator, and sends an on-demand SI request if the OSI delivery mode indicates the unicast delivery mode, otherwise acquires OSI information in a predefined or scheduled period if the OSI delivery mode indicates the broadcast delivery mode. In one embodiment, the delivery mode is unicast and the SI request is sent at a timing or resource explicitly configured in a SI change notification message. In another embodiment, the delivery mode is broadcast and updated SI is obtained based on the scheduling information included in the SI change notification message.

公开(公告)号：US20180049022A1

公开(公告)日：2018-02-15

申请号：US15674519

申请日：2017-08-11

Applicant: MEDIATEK INC.

Inventor： Per Johan Mikael Johansson ,  Chia-Chun Hsu ,  Guan-Yu Lin

IPC: H04W8/24 ,  H04W24/02

CPC classification number: H04W8/24 ,  H04W24/02 ,  H04W48/16

Abstract: A method of system information (SI) acquisition with reduced signaling overhead is proposed. To reduce SI broadcast overhead, the quantity of periodic SI broadcast and the frequency of on-demand SI acquisition need to be reduced. To reduce the frequency of on-demand SI acquisition, rather than always re-acquire SI when serving cell changes, UE is enabled to reuse stored SI information elements across different cells. More specifically, a novel concept of SI ID is introduced to be associated with an area that applies the same SI configuration. UE can reuse stored SI information elements if the stored SI information elements are valid based on the SI ID and validity check.

公开(公告)号：US20240064605A1

公开(公告)日：2024-02-22

申请号：US18230617

申请日：2023-08-04

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin ,  Chia-Hao Yu ,  Chung-Yin Ho

IPC: H04W40/22 ,  H04W40/12

CPC classification number: H04W40/22 ,  H04W40/12 ,  H04W88/04

Abstract: Methods are provided to support path selection for a remote UE configured with multipath in a UE-to-network relay. A direct path or an indirect path is set as the primary path. Side information of the indirect path is considered for path selection. A remote UE can select a suitable path by utilizing the side information for path selection to check whether an indirect path can fulfill the QoS requirement of arriving UL traffic. In a network-controlled path selection, the base station can request UE to send side information. The base station indicates the selected path or the change of primary path to the UE via explicit signaling. Each path is identified by a path ID. The path indication is in a granularity of per radio bearer, per QoS flow, per logical channel, or per logical channel group.

公开(公告)号：US11877241B2

公开(公告)日：2024-01-16

申请号：US17772257

申请日：2020-12-22

Applicant: MEDIATEK INC.

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

IPC: H04W52/02 ,  H04W76/28 ,  H04W92/18

CPC classification number: H04W52/0232 ,  H04W76/28 ,  H04W92/18

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 one or more peer UEs. The controller determines a Sidelink (SL) Discontinuous Reception (DRX) configuration set, and applies the SL DRX configuration set to enable a DRX operation for SL communications with the peer UEs via the wireless transceiver; wherein the SL DRX configuration set is determined based on one of the following: one or more types of one or more SL services which the UE is participating with the peer UEs; one or more SL DRX configurations received from the peer UEs; and control information received from a Base Station (BS).

公开(公告)号：US20230041659A1

公开(公告)日：2023-02-09

申请号：US17877307

申请日：2022-07-29

Applicant: MediaTek Inc.

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

IPC: H04W28/02

Abstract: A method is provided to support remote UE transmitting recommended bit rate query to the base station via the processing of relay UE. In one novel aspect, a new sidelink MAC CE is introduced to indicate the desired bit rate for a specific sidelink logical channel or for a specific Uu/SL radio bearer. In one novel aspect, after receiving the recommended bit rate query MAC CE, the relay UE forwards the MAC CE of this remote UE to the base station over Uu interface after adding information related to remote UE identity. In one novel aspect, the recommended bit rate query MAC CE, when received by the relay UE, is mapped to a specific uplink logical channel priority value or a specific uplink logical channel priority level, which can be used to compare priority with other UL data or UL MAC CE.

公开(公告)号：US20210153169A1

公开(公告)日：2021-05-20

申请号：US17065643

申请日：2020-10-08

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin

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

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：US10887920B2

公开(公告)日：2021-01-05

申请号：US16242269

申请日：2019-01-08

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin

IPC: H04W74/08 ,  H04W72/04 ,  H04W74/02 ,  H04W76/11

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 selects one of one or more uplink (UL) Bandwidth Parts (BWPs) to be an active UL BWP, and selects one of one or more downlink (DL) BWPs to be an active DL BWP according to an association between the UL BWPs and the DL BWPs. Also, the controller performs a random access procedure on the active UL BWP and the active DL BWP via the wireless transceiver.

公开(公告)号：US20190313462A1

公开(公告)日：2019-10-10

申请号：US16377206

申请日：2019-04-06

Applicant: MediaTek Inc.

Inventor： Guan-Yu Lin

IPC: H04W74/08

Abstract: Techniques and examples of handling of simultaneous transmission of physical random access channel (PRACH) and other uplink (UL) channels in mobile communications are described. An apparatus (e.g., user equipment (UE)) determines to skip an UL transmission to a wireless network for either a first procedure or a second procedure. Responsive to determining to skip transmission of the first procedure, the apparatus performs the second procedure and also adjusts one or more parameters associated with the first procedure.

公开(公告)号：US20190313391A1

公开(公告)日：2019-10-10

申请号：US16373881

申请日：2019-04-03

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin

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

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：US20180279377A1

公开(公告)日：2018-09-27

申请号：US15933374

申请日：2018-03-23

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin ,  Chia-Chun Hsu

IPC: H04W74/08 ,  H04L5/00 ,  H04W88/10 ,  H04W88/02 ,  H04W72/04

Abstract: Apparatus and methods are provided for on-demand SI request procedure. In one novel aspect, the RACH procedure is used for one-demand SI information updates through unicast. In one embodiment, the UE sends an embedded SI request message in Msg3 requesting one or more on-demand SI including a UE ID. The SI response and the information of the requested SI are included in the Msg4 or in a separate unicasted message. In another embodiment, one or more assistant information is included in Msg3 or are associated with the preamble in Msg1. In another novel aspect, the preamble of the Msg1 is associated with a group X of SIB. Upon detecting the failure of transmission of the SI request, the UE monitors and receives updated SI information of the whole group X through a broadcast channel.