Mediatek Corporation

Hfi Innovation Inc.

Chi-Chen Lee

Li-Chun Ko

Hong-Kai Hsu

I-Kang Fu

Shih-Chieh Liao

Chih-Yuan Tsai

Jiun-Jang Su

Yi-Chun Wei

Ching-Yueh Kao

Yu-Tien Yeh

Huanchun Ye

Hung-Yueh Chen

Chih-Hao Yeh

Yu-Ting Yao

Chin-Han Wang

Te-Huang Liu

Yi-Jung Chiang

Hung-Wei Shih

Chien-Chun Huang-Fu

Chia-Ming Chang

William Plumb

Ching-Hwa Yu

Yu-Cheng Huang

Chun-Pin Chen

Tai-Cheng Liu

Shih-Hsin Chien

Willaim Plumb

Sian-Jheng Wong

Chung-Wei Wang

Ming-Chun Cheng

Chun-Jen Tsai

Meng-Shiang Lin

Jiun Jang Su

Yung-Chun Yang

Wen-Jiunn Liu

Tien-Yi Huang

Hao-Hsiang Chung

Songsong Jia

Shaojun Luo

Yen-Cheng Lai

Methods and apparatus are provided for providing UE EPS capability information and receiving non-access stratum (NAS) security algorithm information for an interworking procedure in the 5GS network. In one novel aspect, the UE provides the UE EPS capability information in cleartext before the security mode procedure, and the NAS security algorithm information is included in a security mode command message during the security mode procedure. In one embodiment, the UE EPS capability information is an S1 mode indicator or the 5GMM capability information including the Si mode indicator. In another novel aspect, the network provides the NAS security algorithm information before interworking procedure from 5GS to LTE. In one embodiment, the network provides the NAS security algorithm information in the Registration Accept message. In another embodiment, the network provides the NAS security algorithm information in handover procedure from the 5GS to LTE.

Provide EPS security capability and receive eps security algorithm information in 5GS

To facilitate LWA PDCP setting/scheduling, a method of providing dynamic PDCP status report polling is proposed. To enhance scheduling efficiency, the transmitter (can be eNB from DL or UE for UL) can dynamically poll PDCP status report for LWA behavior. The polling can be done by a standalone PDCP control PDU or use reserved bit in PDCP data PDU. The triggering condition for PDCP status polling includes: PDCP without poll time exceeds a first threshold, PDCP without poll bytes exceeds a second threshold, PDCP without poll PDU numbers exceeds a third threshold, a data buffer is empty, and when LWA is deactivated.

Method of dynamic PDCP status report polling for LTE-WLAN aggregation

A mobile communication device including a wireless transceiver and a wireless transceiver is provided. The wireless transceiver performs wireless transmission and reception to and from a first service network and a second service network. The controller uses a first subscriber identity card to establish one or more first radio bearers with the first service network via the wireless transceiver, uses a second subscriber identity card to set up an Internet Protocol Security (IPsec) tunnel with an evolved Packet Data Gateway (ePDG) of the second service network via the first radio bearers, and uses the second subscriber identity card to register an IP Multimedia Subsystem (IMS) service with the second service network via the IPsec tunnel.

Apparatuses and methods for coordinating communication operations associated with a plurality of subscriber identity cards in a mobile communication device with a single wireless transceiver

A communications apparatus includes a radio transceiver and a processor. The radio transceiver is configured for transmitting or receiving wireless radio frequency signals to or from a peer device. The processor determines whether re-synchronization in a communication mode with the peer device is required according to a determination rule. When the re-synchronization is required, the processor transmits a message to the peer device via the radio transceiver to trigger a re-synchronization procedure. The processor determines whether the re-synchronization is required in a connected mode.

Methods for re-synchronizing a communication mode with a peer device and communications apparatus utilizing the same

Aspects of the disclosure provide a method for setting up a call for a user equipment. The method includes receiving, by the user equipment, a measurement configuration message that specifies a set of measurement events corresponding to poor signal quality between the user equipment and a packet-switched network, and sending, by the user equipment, a measurement report when one of the set of measurement events occurs while performing a first call setup process for setting up the call using the packet-switched network. The method also includes terminating the first call setup process after sending the measurement report that indicates poor signal quality between the user equipment and the packet-switched network, and sending, by the user equipment, a service request to begin a second call setup process for setting up the call for the user equipment using a circuit-switched network after terminating the first call setup process.

Method and system for call setup

A user equipment and a circuit-switched fallback method thereof are provided. An initial base station sends a radio resource control connection release message containing the redirection frequency list to the UE. The redirection frequency list includes at least one redirection frequency. The UE determines a priority of the at least one redirection frequency according to a current registered LAI, a learning database and a piece of signal reference information of the redirection frequency list. Accordingly, the UE executes a circuit switch fallback procedure according to the priority of the at least one redirection frequency.

User equipment and circuit-switched fallback method thereof

A mobile communication device including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a service network. The controller operates in a connected mode with a connection to the service network, and determines whether there is no active data traffic in a first period of time when operating in the connected mode. In response to there being no active data traffic in the first period of time, the controller performs a local release of the connection or sends a measurement report to trigger the service network to release the connection.

Apparatuses and methods for user equipment (UE)-initiated connection and resource release

A communications device and method for a carrier search are provided. The communication apparatus includes an RF signal processing device, a processor, and a memory device. The RF signal processing device receives a plurality of main system information and extra system information broadcasted by service networks. The processor is configured to check whether the extra system information corresponding to a second cell has been broadcasted by a detected network when a first center frequency of a first cell corresponding to a target radio access technology has been searched, and search a second center frequency of the second cell according to the extra system information corresponding to the second cell. All or a port of carriers are skipped according to the extra system information corresponding to the second cell. The memory device stores the main and extra system information received from detected service networks.

Communications apparatus and method for carrier search

A communications apparatus includes at least two cellular system radio transceivers capable of simultaneously performing transmitting/receiving radio activities in two cellular networks and a control entity. The control entity is coupled to the cellular system radio transceivers, collects radio activity information of the cellular system radio transceivers, determines whether interference will occur or is occurring and which cellular system radio transceiver is an aggressor transceiver and which cellular system radio transceiver is a victim transceiver when the interference occurs according to the radio activity information, and further determines control information according to the radio activity information for controlling the aggressor transceiver or the victim transceiver to mitigate the interference. The aggressor transceiver is the cellular system radio transceiver having the transmitting radio activity that will interfere or interferes with the receiving radio activity of the victim transceiver.

Methods for mitigating interference in a communications apparatus and communications apparatus utilizing the same

A wireless communication method and Multi-SIM user equipment are provided. The wireless communication method for Multi-SIM dual standby (DSDS) technology is applied on Multi-SIM user equipment (UE) which is capable of carrier aggregation (CA) or dual connectivity (DuCo). The wireless communication method includes the steps of determining whether a packet switch (PS) or circuit switch (CS) paging is received on a second SIM card when a first PS call is ongoing in a first SIM card; and suspending the first PS call which is ongoing on the first SIM card if the packet switch (PS) or circuit switch (CS) paging is received on the second SIM card.

Multi-SIM user equipment and wireless communication method thereof

A wireless communication device is provided with a first radio module and a second radio module inside. The first radio module performs wireless transceiving according to a plurality of first traffic patterns which each indicates allocations of a plurality of first slots for a plurality of forthcoming transmitting or receiving operations, respectively. The second radio module determines an indicator indicating at least one of a plurality of second traffic patterns which each indicates allocations of a plurality of second slots for a plurality of forthcoming transmitting or receiving operations, respectively. Particularly, one or more allocations of the second slots are selectively determined according to the first traffic patterns. Also, the second radio module transmits the indicator to a peer communication device, so that the peer communication device performs transmitting or receiving operations according to the indicator.

Systems and methods for activity coordination in multi-radio terminals

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Taipei, Taiwan

Chi-Chen Lee