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公开(公告)号：US10904821B2
公开(公告)日：2021-01-26
申请号：US16401381
申请日：2019-05-02
Applicant: MEDIATEK INC.
Inventor： Yih-Shen Chen , Chun-Fan Tsai , Tsang-Wei Yu
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 cell. The controller receives first barring information and second barring information from the cell via the wireless transceiver, and ignores the first barring information in response to the UE supporting network-based Cell-specific Reference Signal (CRS) interference mitigation. Also, the controller allows the UE to access the cell in response to the UE supporting network-based CRS interference mitigation and the second barring information indicating that the cell is not barred.
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公开(公告)号：US20240049085A1
公开(公告)日：2024-02-08
申请号：US18220197
申请日：2023-07-10
Applicant: MEDIATEK INC.
Inventor： Li-CHuan Tseng , Chun-Fan Tsai , Yi-Ru Chen
CPC classification number: H04W36/08 , H04W36/0061
Abstract: A method of L1/L2-based mobility with signaling optimization using base (reference) configuration and replaceable (delta) configuration for candidate cells is proposed. All candidates can be configured at different levels provided by Radio Resource Control (RRC) signaling. To support L1/L2-triggered mobility (LTM), there is a common base configuration for candidates, and the candidates are modelled as replaceable configurations which are delta configurations on top of the common base configuration (instead of UE's current RRC configuration). The common and replaceable configurations are also referred to as reference configuration and candidate delta configuration. The candidate delta configuration is applied on top of the reference configuration to form a complete candidate configuration for handover.
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公开(公告)号：US20230262824A1
公开(公告)日：2023-08-17
申请号：US18135725
申请日：2023-04-17
Applicant: MediaTek INC.
Inventor： Din-Hwa Huang , Chun-Fan Tsai , Tsang-Wei Yu , Hsuan-Li Lin
CPC classification number: H04W76/20 , H04L5/0051 , H04W80/02
Abstract: A method for expediting Secondary Cell (SCell) activation is proposed. Under the proposed enhanced direct SCell activation procedure, while adding an SCell to be activated state, the network can add transmission configuration indication (TCI) state information for the SCell in a radio resource control (RRC) signaling message, in addition to TCI state information for a list of candidate TCI states. Upon receiving the RRC signaling message, UE adds the SCell accordingly, and then activates the SCell based on the received TCI state information. Because there is no additional time required for receiving and processing the TCI state information via a media access control (MAC) control element (CE), the SCell activation time is reduced.
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公开(公告)号：US11470523B2
公开(公告)日：2022-10-11
申请号：US16953927
申请日：2020-11-20
Applicant: MEDIATEK INC.
Inventor： Chun-Fan Tsai
IPC: H04W36/00
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 first base station. The controller is coupled to the wireless transceiver, and configured to receive an RRC reconfiguration message from the first base station via the wireless transceiver, and in response to the UE being configured to provide measurement gap requirement information of NR target bands, send an RRC reconfiguration complete message including the measurement gap requirement information to the first base station via the wireless transceiver.
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15.发明申请公开(公告)号：US20210409975A1
公开(公告)日：2021-12-30
申请号：US17321368
申请日：2021-05-14
Applicant: MEDIATEK INC.
Inventor： Chi-Hsuan Hsieh , Din-Hwa Huang , Tsang-Wei Yu , Chun-Fan Tsai
Abstract: A method for expediting Secondary Cell (SCell) or Primary cell of a secondary cell group (PSCell) addition or activation is proposed. A User Equipment (UE) receives a command that indicates adding or activating an SCell or a PSCell, wherein the command comprises information of a temporary Reference Signal (RS). The UE detects the temporary RS according to the information, and uses the temporary RS to add or activate the SCell or the PSCell.
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Patent Agency Ranking
公开(公告)号：US20190132771A1
公开(公告)日：2019-05-02
申请号：US16177427
申请日：2018-11-01
Applicant: MediaTek Inc.
Inventor： Yu-Syuan Jheng , Pavan Santhana Krishna Nuggehalli , Chun-Fan Tsai , Chia-Chun Hsu
Abstract: A user equipment (UE) compares a total amount of data available for transmission, including a total amount of packet data convergence protocol (PDCP) data volume and radio link control (RLC) data volume pending for initial transmission in two associated RLC entities comprising a primary RLC entity and a secondary RLC entity, to a threshold. In response to the total amount of data available for transmission being less than the threshold, the UE indicates an amount of the PDCP data volume to a first medium access control (MAC) entity associated with the primary RLC entity as well as indicating zero to a second MAC entity associated with the secondary RLC entity. In response to the total amount of data available for transmission being greater than or equal to the threshold, the UE indicates the amount of the PDCP data to both the first MAC entity and the second MAC entity.
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公开(公告)号：US11751279B2
公开(公告)日：2023-09-05
申请号：US17123296
申请日：2020-12-16
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Chun-Fan Tsai , I-Kang Fu , Chin-Chia Chang
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 first service network utilizing a first RAT or a second service network utilizing a second RAT. The controller sends an indicator of a connection release request to the first service network via the wireless transceiver in response to terminating a first communication service with the first service network or in response to leaving the first service network for the second service network. Also, the controller releases a Radio Resource Control (RRC) connection with the first service network after sending the indicator of the connection release request.
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公开(公告)号：US20230102742A1
公开(公告)日：2023-03-30
申请号：US17939843
申请日：2022-09-07
Applicant: MEDIATEK INC.
Inventor： Li-Chuan Tseng , Chia-Hao Yu , Cheng-Rung Tsai , Chun-Fan Tsai , Jiann-Ching Guey
IPC: H04W74/08
Abstract: A method of acquiring timing advance (TA) for neighbor cells to reduce latency and interruption for inter-cell mobility is proposed. A UE is configured with a set of active cells for fast cell-switching. To reduce handover interruption, UE performs early RACH for potential target cells and obtains the TA of the potential target cells. In one novel aspect, for overhead reduction, a single RACH preamble may be received by multiple cells. Using a single RACH preamble, UE acquires TA for multiple cells, aiming at reducing the interruption due to RACH during handover. In another novel aspect, UE reports DL reception timing difference between the serving cell and the neighbor cell, and then adjust the TA for the neighbor cell accordingly.
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公开(公告)号：US11546820B2
公开(公告)日：2023-01-03
申请号：US17289064
申请日：2019-10-17
Applicant: MEDIATEK INC.
Inventor： Chun-Fan Tsai , Yuanyuan Zhang
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 first cellular station and a second cellular station. The controller continues to send or receive UP data to or from the first cellular station via the wireless transceiver after receiving a handover command message for a handover of the UE from the first cellular station to the second cellular station, and receives a Radio Resource Control (RRC) request message from the second cellular station via the wireless transceiver after sending a handover complete message to the second cellular station. Also, the controller detaches from the first cellular station in response to receiving the RRC request message.
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公开(公告)号：US10912144B2
公开(公告)日：2021-02-02
申请号：US16406168
申请日：2019-05-08
Applicant: MEDIATEK INC.
Inventor： Yih-Shen Chen , Chun-Fan Tsai , Chia-Chun Hsu
Abstract: A method to speed up uplink data access during a radio resource control (RRC) reconfiguration procedure is proposed. UE first sends an RRC request, and in response receives an RRC reconfiguration message from BS. UE then decodes the RRC reconfiguration message and performs reconfiguration. UE also waits for UL grant for transmitting RRC reconfiguration complete with UL data if available. In one embodiment, BS provides the UL grant in a common search space while UE is performing the reconfiguration, and UE does not need to wait the UL grant until after the reconfiguration is done. In other words, the reconfiguration and the UL grant occurs in parallel, which reduces access delay for UL data. In an alternative embodiment, BS provides UL grant in RRC reconfiguration message, so that UE does not have to receive UL grant while performing the reconfiguration.
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