Apparatus and method for supporting session continuity in wireless communication system

    公开(公告)号:US11470513B2

    公开(公告)日:2022-10-11

    申请号:US16868034

    申请日:2020-05-06

    Abstract: A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes transmitting, to an access and mobility function (AMF), a registration request message for moving to a first public land mobile network (PLMN) from a second PLMN, receiving, from the AMF, a registration accept message including first single-network slice selection assistance information (S-NSSAI) corresponding to the first PLMN of the AMF, determining whether second S-NSSAI associated with a protocol data unit (PDU) session established for the UE matches to the first S-NSSAI, wherein the second S-NSSAI corresponds to the second PLMN, and locally updating the PDU session based on a result of the determining.

    Method and apparatus for adjusting service level in congestion

    公开(公告)号:US11165913B2

    公开(公告)日:2021-11-02

    申请号:US16700319

    申请日:2019-12-02

    Abstract: A method for managing congestion in a base station in a mobile communication system according to one embodiment of the present invention comprises the steps of: requesting user subscription information to a mobility management entity (MME); receiving the user subscription information from the MME; and performing a congestion control in a communication between terminals on the basis of the received user subscription information. According to the embodiment, action may be taken in consideration of the user information and a current congestion state when controlling the congestion in a wireless communication system, and thus side effects resulting from the congestion control may be reduced. Further, the present invention provides a method and device for not charging for dropped packets when performing a packet drop, and thus the congestion control may be performed more easily. Also, the present invention has an advantage of performing the congestion control, according to the type of packets to which congestion control is applied or the type of application or service which has generated packets, at the time of controlling the congestion, thereby minimizing user's inconvenience due to the congestion control.

    Method and apparatus for improving quality of service that a user experiences when media is transmitted through WLAN

    公开(公告)号:US10536881B2

    公开(公告)日:2020-01-14

    申请号:US14721905

    申请日:2015-05-26

    Inventor: Sangsoo Jeong

    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.Systems and methods provide a service that effectively transmits or receives data simultaneously using a 3GPP system, such as Long Term Evolution (LTE), and a non-3GPP system, such as a Wireless Local Area Network (WLAN), in a network where the 3GPP system and the non-3GPP system coexist. Particularly, this is a technology of selecting an access network through which data is to be transmitted based on a user's preference and a network condition so as to improve the quality of a service that a user experiences during data transmission.

    Method and apparatus for generating connection in wireless communication system

    公开(公告)号:US10517013B2

    公开(公告)日:2019-12-24

    申请号:US15125452

    申请日:2015-03-11

    Abstract: A method for transmitting and receiving a signal in a packet data network gateway (PGW) of a mobile communication system according to an embodiment of the present specification comprises the steps of: receiving a first request message which includes an identifier of a terminal and is associated with a packet data network connection; sending a second request message to a policy and charging rules function (PCRF) server on the basis of the received first request message; and if quality of service (QoS) related information is included in a response message received in response to the second request message from the PCRF, performing a control associated with the packet data network connection on the basis of the QoS related information. In a wireless communication system using a PMIP according to the present invention, it is possible to generate a PDN connection in accordance with the default QoS.

    Method and device for service continuity of terminal

    公开(公告)号:US10425869B2

    公开(公告)日:2019-09-24

    申请号:US15311844

    申请日:2015-05-18

    Abstract: Disclosed are: a communication method for incorporating an IoT technique with a 5G communication system for supporting a higher data transmission rate than that of a 4G system or a subsequent system; and a system therefor. The present invention can be applied to intelligent services (for example, services related to smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, security, safety, and the like) on the basis of a 5G communication technique and IoT-related techniques. A method for transmitting and receiving a signal by a base station in a mobile communication system comprises the steps of: receiving a handover request message including a first information related to a device-to-device (D2D) service for a handover target terminal; and allocating D2D resources to the terminal based on the handover request message.

    Method and apparatus for increasing communication effectiveness of terminal in power-saving mode

    公开(公告)号:US10327208B2

    公开(公告)日:2019-06-18

    申请号:US15321452

    申请日:2015-06-30

    Abstract: Provided are a method and apparatus for effectively exchanging information between nodes in a wireless communication system. A communication method for a user equipment (UE) may include: sending a mobility management entity (MME) a power saving mode request message containing information requesting a different network entity to perform proxy transmission and reception for the UE during power saving mode; receiving information indicating availability of power saving mode and corresponding parameters from the MME; and operating in power saving mode according to the received parameters. It is possible to provide an information transmission method for a user equipment remaining in power saving mode.

    Method and device for controlling congestion in mobile communication system

    公开(公告)号:US10313921B2

    公开(公告)日:2019-06-04

    申请号:US15990320

    申请日:2018-05-25

    Abstract: The present invention relates to a method and a device for controlling congestion in a mobile communication system. A method for controlling congestion of a network node according to the present invention comprises the steps of: receiving congestion-related information from at least one base station; transmitting a user equipment information request message for making a request for information on a piece of user equipment corresponding to the base station to a mobility management entity; receiving a user equipment information response message including the information on the user equipment corresponding to the base station from the mobility management entity; and transmitting the information on the piece of user equipment corresponding to the base station to another core network node.

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