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21.发明申请公开(公告)号：US20200154307A1
公开(公告)日：2020-05-14
申请号：US16680325
申请日：2019-11-11
Applicant: MediaTek Inc.
Inventor： Chien-Chun Huang-Fu , Shang-Ru Mo , Chi-Hsien Chen
Abstract: Various examples and schemes pertaining to error handling on missing configuration for inter-system change in mobile communications are described. An apparatus performs a protocol data unit (PDU)-related procedure with a wireless network. The apparatus detects whether there is an error in the PDU-related procedure and the apparatus handles the error in response to detecting the error in the PDU-related procedure.
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公开(公告)号：US20190313262A1
公开(公告)日：2019-10-10
申请号：US16373895
申请日：2019-04-03
Applicant: MEDIATEK INC.
Inventor： Chia-Chun Huang-Fu , Chi-Hsien Chen , Shang-Ru Mo
Abstract: A PDU session and QoS flow handling mechanism is proposed when a QoS flow of a PDU session does not have a mapping DRB after a handover or a service request procedure. If the QoS flow is associated with a default QoS rule, the UE can locally release the PDU session, initiate a PDU session release procedure, send a 5GSM status message with proper cause, or assume the PDU session is not reactivated. On the other hand, if the QoS flow is not associated with a default QoS rule, the UE can locally delete the QoS flow, delete the QoS flow by using a PDU session modification procedure, or send a 5GSM status message with proper cause.
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公开(公告)号：US12010549B2
公开(公告)日：2024-06-11
申请号：US17474915
申请日：2021-09-14
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Bo-Hun Chen , Chi-Hsien Chen , Shang-Ru Mo
CPC classification number: H04W28/0289 , H04W84/042
Abstract: In 5GS, Single-Network Slice Selection Assistance Information (S-NSSAI) based backoff (BO) timers (T3584/T3585) can be applied to either the registered PLMN or all the PLMNs based on a 5GSM congestion re-attempt indicator. For a specific PDU session, the corresponding BO timer applied to the registered PLMN and the BO timer applied to all PLMN can be both running concurrently. It is proposed for a UE to stop both the BO timer applied to all the PLMNs and the BO timer applied to the registered PLMN, if running, in all the following scenarios: 1) Receiving a PDU session release command without a BO timer, 2) Receiving a PDU session release command with 5GSM cause #39, 3) Receiving a PDU session modification command, 4) Receiving a 5GSM message with a 5GSM congestion control BO timer value, and 5) Receiving a PDU session authentication command.
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公开(公告)号：US20240057200A1
公开(公告)日：2024-02-15
申请号：US18225067
申请日：2023-07-21
Applicant: MEDIATEK INC.
Inventor： Yu-Hsin Lin , Yuan-Chieh Lin , Cheng-Hsiao Ko , Shang-Ru Mo
Abstract: A method of performing MT services using an indication to avoid barring in access control is provided. UE sends an indication related to an MT service to the NAS layer when the MT service starts, or when a corresponding communication session of the MT service is handover to 3GPP access. Once the service has successfully been set up, then as long as the service is ongoing, the following access attempts are allowed to proceed without further access control checking in order to avoid barring: MMTEL voice, MMTEL video, and SMSoIP. In one novel aspect, based on the indication provided to the NAS layer when the MT service starts or when handover to 3GPP access occurs, UE skips access control after UE goes to idle mode and establishes an RRC connection to resume the MT service.
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公开(公告)号：US11265936B2
公开(公告)日：2022-03-01
申请号：US16792453
申请日：2020-02-17
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Chi-Hsien Chen , Shang-Ru Mo
Abstract: In a first novel aspect, UE receives a mapped EPS bearer context IE during a PDU session establishment or modification procedure. UE diagnoses whether an operation error occurs for a mapped EPS bearer context. If so, UE deletes the mapped EPS bearer context with a 5GSM cause. In a second novel aspect, UE receives a QoS flow description IE during a PDU session establishment or modification procedure. UE diagnoses whether an operation error occurs for a QoS flow description. If so, UE either rejects the modification command or deletes the QoS flow description with a 5GSM cause. In a third novel aspect, UE receives a QoS flow description IE during an EPS bearer activation or modification procedure. UE diagnoses whether an operation error occurs for a QoS flow description. If so, UE includes an ePCO/PCO IE with a 5GSM cause in an activation or modification accept message.
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Patent Agency Ranking
公开(公告)号：US11039361B2
公开(公告)日：2021-06-15
申请号：US16532615
申请日：2019-08-06
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Yu-Chieh Tien , Shang-Ru Mo , Chi-Hsien Chen
IPC: H04W36/14 , H04W76/20 , H04W76/11 , H04W40/02 , H04W48/12 , H04L12/813 , H04L29/06 , H04L12/725 , H04W28/02 , H04W28/12 , H04W36/00 , H04W68/02 , H04W76/27 , H04L29/08 , H04W28/04 , H04W36/08 , H04W48/18 , H04W84/04
Abstract: A method of 5G session management (5GSM) state mapping is proposed when interworking. For each PDU session in 5GSM state of PDU SESSION active, PDU SESSION MODIFICATION PENDING, or PDU SESSION INACTIVE PENDING, UE maps the PDU session to a PDN connection in 4G ESM state BEARER CONTEXT ACTIVE. For any other PDU session in 5GSM state of PDU SESSION inactive, or PDU SESSION ACTIVE PENDING, UE maps the PDU session to a PDN connection in 4G ESM state BEARER CONTEXT INACTIVE.
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公开(公告)号：US20200267783A1
公开(公告)日：2020-08-20
申请号：US16792448
申请日：2020-02-17
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Chi-Hsien Chen , Shang-Ru Mo
Abstract: A method of handling mapped EPS bearer context with duplicate EPS bearer ID (EBI) for 5GS to EPS inter-system change enhancement is proposed. UE is provided with a mapped EPS bearer context IE by the network to create a new mapped EPS bearer associated with a PDU session. UE detects collision of the new mapped EPS bearer—it has the same EBI as an existing EPS bearer. Upon successfully process the create request, UE either replaces the existing EPS bearer with the new mapped EPS bearer, or deletes the EPS bearer with duplicate EBI by explicit signaling to the network. As a result, when inter-system change from 5G to EPS happens, there is no EPS collision.
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公开(公告)号：US20200162968A1
公开(公告)日：2020-05-21
申请号：US16687166
申请日：2019-11-18
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Shang-Ru Mo , Chi-Hsien Chen
IPC: H04W36/00
Abstract: A method of handling mapped Evolved Packet System (EPS) bearer context for invalid QoS flow description is proposed. During a PDU session establishment procedure or a PDU session modification procedure, a UE may receive a mapped EPS bearer context IE for creating a new mapped EPS bearer of a PDU session. If there is no corresponding QoS flow description associated to the new mapped EPS bearer, e.g., if there is no corresponding authorized QoS flow description IE in the PDU session establishment accept message or in the PDU session modification command message, then the UE should send another PDU session modification request message to the network to delete the new mapped EPS bearer context.
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公开(公告)号：US20200053819A1
公开(公告)日：2020-02-13
申请号：US16532615
申请日：2019-08-06
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Yu-Chieh Tien , Shang-Ru Mo , Chi-Hsien Chen
Abstract: A method of 5G session management (5GSM) state mapping is proposed when interworking. For each PDU session in 5GSM state of PDU SESSION active, PDU SESSION MODIFICATION PENDING, or PDU SESSION INACTIVE PENDING, UE maps the PDU session to a PDN connection in 4G ESM state BEARER CONTEXT ACTIVE. For any other PDU session in 5GSM state of PDU SESSION inactive, or PDU SESSION ACTIVE PENDING, UE maps the PDU session to a PDN connection in 4G ESM state BEARER CONTEXT INACTIVE.
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公开(公告)号：US20200053596A1
公开(公告)日：2020-02-13
申请号：US16530152
申请日：2019-08-02
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Chi-Hsien Chen , Shang-Ru Mo
Abstract: A method of QoS rule management with enhanced handling on QoS flow description is proposed. UE checks QoS configuration received from the network for QoS operation errors. When UE receives a QoS rule associated with a specific QFI but has no QoS flow description for the QFI, UE further determines whether the QoS rule is of a GBR QoS flow. If so, UE detects a QoS operation error. If the QoS rule is the default QoS rule, then UE releases the PDU session. If the QoS rule is not the default QoS rule, then UE either rejects a PDU session modification command that carries the QoS rule or deletes the QoS rule carried by a PDU session establishment accept with a 5GSM cause value indicating the QoS operation error.
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