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公开(公告)号：US20230035327A1
公开(公告)日：2023-02-02
申请号：US17825447
申请日：2022-05-26
Applicant: MEDIATEK INC.
Inventor： Yuan-Chieh Lin
Abstract: A method of handling NAS signaling connection release using guard timers for UE supporting MUSIM in an EPS/5GS network is proposed. When a UE establishes a NAS signaling connection over a first USIM, the UE may need to switch a second USIM due to more important activities on the second USIM. If both the UE and the network support the feature of releasing the NAS signalling connection or rejection of paging, the UE can set a Request type to “NAS Signaling connection release” or “Rejection of paging” in a request message. In order to guarantee the release of the NAS signaling connection over the first USIM, the UE can start a guard timer upon receiving an accept message from the network. The UE can locally release the NAS signaling connection upon timer expiry to improve service on the second USIM.
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公开(公告)号：US20230007559A1
公开(公告)日：2023-01-05
申请号：US17844049
申请日：2022-06-19
Applicant: MEDIATEK INC.
Inventor： Chiao-Chih Chang , Yuan-Chieh Lin , Chih-Yuan Tsai , Chien-Chun Huang-Fu , Yi-Lun Chen , Ying-You Lin
Abstract: A communication apparatus comprises a radio transceiver and a modem processor. The radio transceiver is configured to transmit or receive wireless signals in a wireless network. The modem processor is coupled to the radio transceiver and configured to perform operations comprising: connecting to a first network device via a first communication link in a first frequency band; predicting a handover according to at least one of at least one measurement result or location information; connecting to a second network device via a second communication link in a second frequency band, after predicting the handover; performing the handover from the first network device to a third network device, to stop connecting to the first network device and to connect to the third network device via the first communication link in the first frequency band; and stopping connecting to the second network device, after performing the handover.
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公开(公告)号：US20220407618A1
公开(公告)日：2022-12-22
申请号：US17824874
申请日：2022-05-25
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Chiao-Chih Chang , Yuan-Chieh Lin , Sheng-Yi Ho
Abstract: A communication apparatus includes a radio transceiver, an application processor and a modem processor. The radio transceiver transmits or receives wireless signals to or from a network device in a wireless network to communicate with the network device via a communication link. The application processor is configured to run one or more application programs. The modem processor is coupled to the radio transceiver and the application processor and configured to perform operations including: evaluating a future condition of the communication link according to at least one communication parameter or at least one communication event to obtain an evaluation result; and sending a first indication to the application processor to inform the application processor of the evaluation result. Responsive to reception of the first indication, the application processor is further configured to perform operation including: adapting a codec for multimedia processing of data received from the network device.
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公开(公告)号：US20220286850A1
公开(公告)日：2022-09-08
申请号：US17668772
申请日：2022-02-10
Applicant: MEDIATEK INC.
Inventor： Yuan-Chieh Lin , Chia-Lin Lai
Abstract: A method of handling authentication reject upon accessing an SNPN using credentials from a credential holder is proposed. A UE is configured with a “list of subscriber data”. The UE selects an SNPN using the configured list of subscriber data, e.g., based on the SNPN selection parameters contained in a selected entry of the list of subscriber data. Based on the selected entry, the UE selects an SNPN, and then tries to access the selected SNPN using credentials supplied by a subscribed SNPN. When UE receives an authentication reject message from the network, UE considers that the selected entry of the list of subscriber data is invalid. However, other entries related to the current selected SNPN are still valid. UE is still able to access the current selected SNPN, using credentials supplied in another entry of the list of subscriber data.
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公开(公告)号：US20220232506A1
公开(公告)日：2022-07-21
申请号：US17558298
申请日：2021-12-21
Applicant: MEDIATEK INC.
Inventor： Chia-Lin Lai , Yuan-Chieh Lin
Abstract: A method supporting enhanced network identity (NID) provisioning under User Equipment (UE) mobility scenarios between different types of networks is proposed. When a UE registers to an SNPN, the UE is assigned with a 5G-GUTI by the SNPN. The SNPN is identified by an SNPN ID==PLMN ID+NID. When the UE moves from the SNPN to another target network having a target AMF, the UE triggers a mobility registration update procedure and provides the 5G-GUTI along with NID information in a Registration Request to the target AMF. The target AMF can use the NID information along with the 5G-GUTI to find a source AMF for deriving UE context for the subsequent operations during the mobility registration update procedure. Providing NID information along with 5G-GUTI can assist the target AMF to find the source AMF efficiently, preventing a potential registration procedure failure.
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Patent Agency Ranking
公开(公告)号：US20190253935A1
公开(公告)日：2019-08-15
申请号：US16274847
申请日：2019-02-13
Applicant: MEDIATEK INC.
Inventor： Chien-Chun HUANG-FU , Yuan-Chieh Lin
CPC classification number: H04W76/12 , H04W36/0016 , H04W36/14 , H04W76/32 , H04W84/042
Abstract: Aspects of the disclosure provide an electronic apparatus and methods for wireless communication. The electronic apparatus can include processing circuitry configured to identify, during an inter-system change of the electronic apparatus from a source network system to a target network system, at least one source session bearer between the electronic apparatus and the source network system. The processing circuitry can further map the at least one identified source session bearer to at least one target session bearer based on a mapping relationship that matches the at least one identified source session bearer with the at least one target session bearer to be established between the electronic apparatus and the target network system.
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公开(公告)号：US20190223246A1
公开(公告)日：2019-07-18
申请号：US16244259
申请日：2019-01-10
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Pan-Yen Chiang , Marko Niemi , Yuan-Chieh Lin
Abstract: A method of maintaining a proper forbidden tracking area identifier (TAI) list is proposed. A UE receives a service area list comprising one or more allowed tracking areas. The service area list may be carried by a configuration update command. UE compares if any of the allowed tracking area having a matching TAI in the forbidden TAI list. Accordingly, UE removes any allowed tracking areas having a matching TAI from the forbidden TAI list. In one embodiment, UE sends a REGISTERATION REQUEST message to initiate a registration procedure. In response, UE receives a REGISTRATION ACCEPT message, which may also carry a service area list. UE may remove the allowed tracking area having a matching TAI from the forbidden TAI list. However, if UE is registered for emergency services, then UE shall not remove the allowed tracking area from the forbidden TAI list.
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公开(公告)号：US20190059026A1
公开(公告)日：2019-02-21
申请号：US15998701
申请日：2018-08-16
Applicant: MediaTek Inc.
Inventor： Chien-Chun Huang-Fu , Yu-Syuan Jheng , Yuan-Chieh Lin
Abstract: Various examples and schemes pertaining to enhancement of voice domain selection in 5th-Generation Systems (5GS) and fast return from Evolved Packet System (EPS) to 5GS are described. A processor of a user equipment (UE) receive an indication of whether a packet-switched (PS) voice service is supported in a first mobile communication system. The processor performs, based on the indication, voice domain selection (VDS) by selecting and engaging with one of a plurality of mobile communication systems comprising the first mobile communication system and at least a second mobile communication system. The processor performs the VDS before receiving signaling from one of the plurality of communication systems about availability of support for the PS voice service in that mobile communication system.
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公开(公告)号：US10034325B2
公开(公告)日：2018-07-24
申请号：US15273921
申请日：2016-09-23
Applicant: MEDIATEK INC.
Inventor： Yuan-Chieh Lin , Chien-Chun Huang-Fu , Yu-Syuan Jheng , Marko Niemi , Chi-Hsien Chen
CPC classification number: H04W76/18 , H04W28/0289 , H04W48/06 , H04W52/0209 , Y02D70/00 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262
Abstract: AT commands are used for controlling Mobile Termination (MT) functions and GSM/UMTS network services from a Terminal Equipment (TE) through Terminal Adaptor (TA). 3GPP introduces multiple backoff timers and barring to solve network congestion problem. However, a TE does not know the timer value and the barring status. In accordance with one novel aspect, a new AT command interface that can respond timer value and barring status to the TE is proposed. It reduces wasteful retries and saves power consumption of the TE. Through the new AT command interface, the TE can query backoff timer status. Via unsolicited result code (URC), the MT can detect backoff timer status change and report updated backoff timer status to the TE.
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公开(公告)号：US20180199281A1
公开(公告)日：2018-07-12
申请号：US15862646
申请日：2018-01-05
Applicant: MEDIATEK INC.
Inventor： Chien-Chun Huang-Fu , Yuan-Chieh Lin
CPC classification number: H04W76/16 , H04L65/1016 , H04L67/14 , H04W28/08 , H04W36/14 , H04W48/20 , H04W76/11 , H04W76/30 , H04W84/12 , H04W88/02 , H04W88/06 , H04W88/16 , Y02D70/00 , Y02D70/10 , Y02D70/12 , Y02D70/122 , Y02D70/1224 , Y02D70/124 , Y02D70/1242 , Y02D70/1262 , Y02D70/14 , Y02D70/142 , Y02D70/23 , Y02D70/26
Abstract: Solutions are proposed to facilitate the support of 3GPP PS_Data_Off feature. The PS_Data_Off feature prevents transport via 3GPP access of all IP packets except those related to 3GPP PS_Data_Off Exempt Services. In one example, signaling storms due to frequent PS_Data_Off reconfiguration are prevented. In another example, for multi-SIM devices and for devices that supporting WiFi access, UE reconfigures the PS_Data_Off feature upon a triggering condition is satisfied. In yet another example, upon status change of PS_Data_Off feature, UE initiates RAT change to improve performance, to reduce power consumption and cost, and to maintain service continuity. Furthermore, new AT commands and parameters are introduced to enable the PS_Data_Off feature.
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