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公开(公告)号：US11240699B2
公开(公告)日：2022-02-01
申请号：US16686868
申请日：2019-11-18
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Chi-Hsien Chen , Shang-Ru Mo
Abstract: A method of handling insufficient resources in a user equipment (UE) during a PDU session establishment procedure is proposed. During a PDU session establishment procedure, UE sends a PDU SESSION ESTABLISHMENT REQUEST message to the network. UE then receives a PDU SESSION ESTABLISHMENT ACCEPT message from the network, the ACCEPT message carries various PDU session parameters including authorized QoS rules and QoS flows. If UE decides to reject the addition of the new authorized QoS flow description or the new authorized QoS rule due to lack of resources, UE may initiate a PDU session release procedure with 5G session management (5GSM) cause IE #26 “insufficient resources”. In an alternative embodiment, UE may synchronize with the network by sending a PDU session modification request message to delete certain QoS rules/flow descriptions with 5GSM cause IE #26 “insufficient resources”.
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公开(公告)号：US11228997B2
公开(公告)日：2022-01-18
申请号：US16903589
申请日：2020-06-17
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Chia-Lin Lai
Abstract: A method of handling multi-access (MA) Protocol data unit (PDU) session under inter-system change is proposed. An MA PDU session uses one 3GPP access network or one non-3GPP access network at a time, or simultaneously one 3GPP access network and one non-3GPP access network. The 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. Upon intersystem change from 5GS to EPS over the 3GPP access, if interworking with EPS is not supported, the MA PDU session is maintained in 5GS over the non-3GPP access type. Data traffic over of the MA PDU session over the 3GPP access type is transferred to the non-3GPP access type.
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公开(公告)号：US11212720B2
公开(公告)日：2021-12-28
申请号：US16653047
申请日：2019-10-15
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Chi-Hsien Chen
Abstract: A method of handling invalid PDU session during handover procedure between non-3GPP access and 3GPP access in a mobile communication network is proposed. A UE establishes a PDU session over a first RAT, and then tries to handover the PDU session from the first RAT to a second RAT. However, at the network side, the PDU session over the first RAT does not exist anymore and the network considers the PDU session to be invalid. The network thus sends a PDU session establishment reject message back to the UE, with a 5GSM status message cause value #54 indicating “PDU session does not exist”. At the UE side, the PDU session over the first RAT is still valid (e.g., not inactive). In order to resynchronize with the network, the UE performs a PDU session release procedure to release the PDU session over the first RAT.
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公开(公告)号：US11212324B2
公开(公告)日：2021-12-28
申请号：US16532601
申请日：2019-08-06
Applicant: MEDIATEK INC.
Inventor： Marko Niemi , Chien-Chun Huang-Fu
Abstract: A solution of supporting IP multimedia subsystem (IMS) call setup in a next generation system (5GS) is proposed. During a registration procedure, the network sends indications to a user equipment (UE) indicating whether IMS voice over PS session (VoPS) over 3GPP access and over non-3GPP access is supported or not. The indications comprise two independent indicators, one indicator for indicating whether IMS VoPS is supported over 3GPP access, and the other indicator for indicating whether IMS VoPS is supported over non-3GPP access. In one example, the two independent indicators are included in a 5GS network feature support information element (IE) carried by a registration accept message sent from the network during the registration procedure.
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公开(公告)号：US20210337456A1
公开(公告)日：2021-10-28
申请号：US17204523
申请日：2021-03-17
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu
Abstract: A method for configuring Route Selection Policy (URSP) rules with IP 3 tuples as a traffic descriptor component is proposed. URSP is used by a user equipment (UE) to determine if a detected application can be associated to an established Protocol Data Unit (PDU) session, can be offloaded to non-3GPP access outside a PDU session, or can trigger the establishment of a new PDU session. URSP can be configured by the network to the UE. A new component is introduced which can include three parameters of IP 3 tuple for URSP configuration. Upon receiving the new component for IP 3 tuple component, the UE may discover certain errors and determine corresponding error handling.
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Patent Agency Ranking
公开(公告)号：US11153925B2
公开(公告)日：2021-10-19
申请号：US16738750
申请日：2020-01-09
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Chi-Hsien Chen , Shang-Ru Mo
IPC: H04W76/20 , H04L12/725 , H04L12/721 , H04L12/939 , H04W40/24
Abstract: A method of handling QoS flow descriptions with invalid EPS bearer context is proposed. During an EPS bearer activation or modification procedure, a UE may receive an ePCO/PCO IE for creating a new QoS flow description or modifying an existing QoS flow description. if UE detects that the to be created/modified QoS flow descriptions are associated with invalid EPS bearer context, then UE does, not create/modify the QoS flow descriptions. Instead, UE locally deletes the QoS flow descriptions provided by the network. In addition, UE indicates a 5GSM cause to the network via PCO/ePCO. As a result, when inter-system change from EPS to 5GS happens, UE no longer needs to handle the QoS flow descriptions with invalid EPS bearer context.
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公开(公告)号：US11026124B2
公开(公告)日：2021-06-01
申请号：US16458523
申请日：2019-07-01
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Po-Ying Chuang
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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公开(公告)号：US11006344B2
公开(公告)日：2021-05-11
申请号：US16535730
申请日：2019-08-08
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Meng-Ting Tsai
IPC: H04W48/16 , H04W40/02 , H04W48/12 , H04L12/813 , H04L29/06 , H04L12/725 , H04W28/02 , H04W28/12 , H04W36/00 , H04W36/14 , H04W68/02 , H04W76/27 , H04L29/08 , H04W28/04 , H04W8/18 , H04W36/08 , H04W48/18 , H04W84/04
Abstract: A method for UE route selection policy (URSP) rule matching is proposed. URSP is used by a UE to determine if a detected application can be associated to an established PDU session, can be offload to non-3GPP access outside a PDU session, or can trigger the establishment of a new PDU session. The UE first finds a non-default URSP rule with a matching traffic descriptor to the application. When the UE fails to find existing PDU session or setup new PDU session with any or the route selection descriptors of the non-default URSP rule, the UE moves to another non-default URSP rule, if any, and try the matching. If all non-default URSP rules cannot be matched with the application, then the UE tries the default URSP rule, which includes a match-all traffic descriptor.
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公开(公告)号：US20210105858A1
公开(公告)日：2021-04-08
申请号：US17013717
申请日：2020-09-07
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu
Abstract: A method for handling multi-access (MA) Protocol data unit (PDU) session release is proposed. An MA PDU session uses one 3GPP access network or one non-3GPP access network at a time, or simultaneously one 3GPP access network and one non-3GPP access network. Upon receiving a PDU session release command message including an access type, the user equipment (UE) transmits a PDU session release complete message or a 5G session management (5GSM) status message to the 5G system (5GS). In addition, the UE determines the user plane resources of the MA PDU session on the access indicated in the access type as released, or determines the MA PDU session as released, depending on the access indicated in the access type and the access(es) over which the user plane resources of the MA PDU session are established.
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公开(公告)号：US10972953B2
公开(公告)日：2021-04-06
申请号：US16869748
申请日：2020-05-08
Applicant: Mediatek Inc.
Inventor： Jen-Ping Huang , Chien-Chun Huang-Fu , Pi-Yuan Cheng
Abstract: A UE determines a set of RATs available in accordance with a first subscriber identity associated with a first network and a second subscriber identity associated with a second network. When the set includes a first RAT accessing a base station in the first network, a second RAT accessing a base station in the second network, and a third RAT accessing an access point of a WLAN, the UE selects, in a first performance configuration, the first RAT to establish a first call under the first subscriber identity. The UE further communicates, under the first subscriber identity, with a first IMS server of the first network through the first RAT to establish the first call. The UE maintains, under the second subscriber identity, a connection with a second IMS server of the second network through the first RAT or the third RAT when the first call is active.
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