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公开(公告)号：US20160080992A1
公开(公告)日：2016-03-17
申请号：US14854413
申请日：2015-09-15
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Shang-Ru Mo , Yuan-Chieh Lin , Yung Hsiang Hsieh , Yung-Fu Chen
Abstract: Methods and apparatus are provided for inter-RAT bearer change for the 3GPP network. In one novel aspect, a bearer termination procedure is performed upon detecting one or more triggering events for the inter-RAT bearer modification. In one embodiment, the UE established the 4G EPS bearer. The UE successfully performs a bearer change from 4G to 3G. Subsequently, the UE detects missing mandatory parameters during inter-RAT bearer change from 3G to 2G in an idle state. The UE performs bearer termination by releasing the PDP context. In one embodiment, the PDP context is locally released. In other embodiments, the UE explicitly releases bearer using the PDP context deactivation procedure. The locally released procedure can be triggered by the UE, or by the network, or by both the UE and the network. The explicitly PDP context release procedure can be triggered by the UE, or by the network, or by both the UE and the network.
Abstract translation: 提供了用于3GPP网络的RAT间承载变化的方法和装置。 在一个新颖的方面，在检测用于RAT间承载修改的一个或多个触发事件时，执行承载终止过程。 在一个实施例中，UE建立了4G EPS承载。 UE成功地执行从4G到3G的承载变化。 随后，UE在空闲状态期间从3G到2G的RAT间承载变化期间检测到缺失的强制参数。 UE通过释放PDP上下文来执行承载终止。 在一个实施例中，PDP上下文被本地释放。 在其他实施例中，UE使用PDP上下文去激活过程明确地释放承载。 本地发布的过程可以由UE触发，也可以由网络触发，或由UE和网络触发。 明确的PDP上下文释放过程可以由UE或网络或UE和网络两者触发。
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公开(公告)号：US20150264741A1
公开(公告)日：2015-09-17
申请号：US14644443
申请日：2015-03-11
Applicant: MEDIATEK INC.
Inventor： Yu-Syuan Jheng , Chien-Chun Huang-Fu , Hung-Lin Chang , Yuan-Chieh Lin
CPC classification number: H04W76/38 , H04W36/0066 , H04W76/27
Abstract: Methods and apparatus are provided to reduce service interruption for intra-RAT and inter-RAT handover procedures. The UE performs a NAS signaling procedure via a NAS signaling connection in a mobile communication network. The UE monitors a radio resource status and determines whether a radio bearer has been or is being established for a RRC connection for data transmission. The UE determines whether to release the NAS signaling connection after completing the NAS signaling procedure based on whether the radio bearer has been established. In one embodiment, the UE monitors a radio resource status and determines whether a radio bearer has been established for a RRC connection for data transmission. The UE determines whether to start a timer upon completing the NAS signaling procedure based on whether the radio bearer has been or is being established.
Abstract translation: 提供了用于减少RAT内和RAT间切换过程的业务中断的方法和装置。 UE通过移动通信网络中的NAS信令连接执行NAS信令过程。 UE监视无线电资源状态，并确定无线电承载是否已建立用于数据传输的RRC连接。 UE根据无线承载建立完成NAS信令过程，确定是否释放NAS信令连接。 在一个实施例中，UE监视无线电资源状态，并确定是否已建立无线电承载用于数据传输的RRC连接。 UE根据无线承载是否已经建立完成NAS信令过程，确定是否启动定时器。
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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
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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34.发明授权公开(公告)号：US12010552B2
公开(公告)日：2024-06-11
申请号：US17548675
申请日：2021-12-13
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Bo-Hun Chen
CPC classification number: H04W28/0908 , H04W76/30 , H04W84/042
Abstract: A method for 5G Session Management (5GSM) handling of network rejection not due to congestion control is provided. A User Equipment (UE) receives a 5GSM reject message from a mobile communication network. The 5GSM reject message indicates a network rejection not due to congestion control. The UE associates a back-off timer with a Home Public Land Mobile Network (HPLMN) Single-Network Slice Selection Assistance Information (S-NSSAI). The UE prevents itself from sending a 5GSM request message for the same HPLMN S-NSSAI that is associated with the back-off timer.
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公开(公告)号：US11706665B2
公开(公告)日：2023-07-18
申请号：US17316909
申请日：2021-05-11
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Po-Ying Chuang
CPC classification number: H04W28/24 , H04L67/14 , H04W84/042
Abstract: A method of enhanced error handling for 5G QoS operations is proposed. A PDU session defines the association between the UE and the data network that provides a PDU connectivity service. Each PDU session is identified by a PDU session ID, and may include multiple QoS flows and QoS rules. Within a PDU session, there should be one and only one default QoS rule. The default QoS rule indication (DQR) and the QoS flow identifier (QFI) of a signaled QoS rule should not be changed. Two new 5G session management (5GSM) causes are defined: a semantic error in the QoS operation (cause value #83) and a syntactic error (cause value #84) in the QoS operation. The UE should check the QoS rule provided in a PDU session modification command message for different types of QoS rule errors.
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Patent Agency Ranking
公开(公告)号：US11553549B2
公开(公告)日：2023-01-10
申请号：US17368820
申请日：2021-07-06
Applicant: MEDIATEK INC.
Inventor： Yuan-Chieh Lin , Chien-Chun Huang-Fu
Abstract: A PDU session status information element (IE) is used to bi-directionally synchronize the state of a multi-access (MA) Protocol data unit (PDU) session between UE and NW. In the downlink, the PDU session status IE is included in a 5GMM message sent from NW to UE over an access type, and it indicates the user plane resources are NOT established at NW side on the access type the 5GMM message is sent over. For MA PDU sessions having user plane resources established in the UE side only on the access type the 5GMM message is sent over, the UE performs a local release of those MA PDU sessions. For MA PDU sessions having user plane resources established in the UE side on both access types, the UE performs a local release on the user plane resources on the access type the 5GMM message is sent over.
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公开(公告)号：US11483754B2
公开(公告)日：2022-10-25
申请号：US17110462
申请日：2020-12-03
Applicant: MEDIATEK INC.
Inventor： Chia-Lin Lai , Chien-Chun Huang-Fu
Abstract: A method of handling multi-access (MA) Protocol data unit (PDU) session handover is proposed. A UE and network can support Access Traffic Steering Switching and Splitting (ATSSS) functionalities to distribute traffic over 3GPP access and non-3GPP access for the established MA PDU session. An ATSSS-Supported UE first establishes a MA PDU Session on both 3GPP and non-3GPP access in a currently registered PLMN which is an ATSSS-Supported network. The UE then moves from the ATSSS-Supported network to an ATSSS-not-Supported network and finally reaches another ATSSS-Supported network. In one novel aspect, a solution is provided on how to handle the ongoing MA PDU Session with two accesses under handover scenarios between ATSSS-Supported and ATSSS-not-Supported networks. Furthermore, if the ongoing MA PDU Session cannot handover, a solution is provided on how to handle the MA PDU Session.
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公开(公告)号：US11445401B2
公开(公告)日：2022-09-13
申请号：US16795421
申请日：2020-02-19
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Yu-Chieh Tien , Chi-Hsien Chen , Shang-Ru Mo
Abstract: A method can include receiving a non-access stratum (NAS) message for establishing or modifying a protocol data unit (PDU) session at a user equipment (UE) from a core network, determining whether there is a quality of service (QoS) flow description resulting from the establishment or modification of the PDU session that is associated with a guaranteed bit rate (GBR) QoS flow of the PDU session, and invalid, and when it is determined that there is the invalid QoS flow description associated with the GBR QoS flow of the PDU session, performing an error handling operation.
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公开(公告)号：US11343699B2
公开(公告)日：2022-05-24
申请号：US16837040
申请日：2020-04-01
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu
Abstract: A method for synchronizing evolved packet system (EPS) bearer context status between a user equipment (UE) and a network can include locally deactivating an EPS bearer context of a packet data network (PDN) connection at the UE while the UE operates in S1 mode without notifying the network serving the UE, wherein interworking to a fifth generation system (5GS) is supported for the deactivated EPS bearer context, and upon inter-system change from S1 mode to N1 mode, including an EPS bearer context status information element (IE) in a registration request message indicating which EPS bearer contexts are active in the UE before the inter-system change.
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公开(公告)号：US11317345B2
公开(公告)日：2022-04-26
申请号：US16937419
申请日：2020-07-23
Applicant: MediaTek Inc.
Inventor： Chien-Chun Huang-Fu
Abstract: Solutions for data network name (DNN) selection when user equipment (UE) route selection policy (URSP) rule is applied in evolved packet system (EPS) with respect to user equipment and network apparatus in mobile communications are described. An apparatus may start an application in an EPS network. The apparatus may select a URSP rule from one or more configured URSP rules by matching a traffic descriptor (TD) of the URSP rule with the application. The apparatus may determine whether a data network name (DNN) or access point name (APN) included in a route selection descriptor (RSD) is a local area data network (LADN) DNN or APN. The apparatus may skip the RSD in an event that the DNN or APN is the LADN DNN or APN. The apparatus may evaluate a next RSD or a next URSP rule in case that the next RSD or the next URSP rule is available.
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