Samsung Electronics Co., Ltd.

Chul-Ki Lee

Yong-Seok Park

Sang-Jun Moon

Jiangwei Xu

Seong-Ryong Kang

Jung-Hwan Lim

Byung-Suk Kim

Hong-Kyu Jeong

Dong-Sook Kim

Yeong-Moon Son

Jung-Shin Park

Fei Fei Feng

Hyeon-Jin Kang

Jeong-Jae Won

Antony Franklin

Geoffrey M Garner

Byung-suk Kim

Hong-kyu Jung

A method of providing contents in a communication system by a proxy server includes selecting one of a first content and a second content based on a first channel bandwidth usable by a terminal and a second channel bandwidth usable by a base station; and providing the selected content to the terminal, wherein the first content requires a wider channel bandwidth than a channel bandwidth of the second content.

Method and apparatus for providing contents in communication system

According to the present invention, a base station determines from a wireless communication system whether data to be transmitted is a response signal-required data that requires a response signal, estimates the amount of buffer of a user equipment (UE) at the point when the response signal is to be transmitted, predicts a required resource amount of the UE that is required for transmitting the response signal by using the buffer amount of the UE that is estimated, and schedules for allocating a resource to the UE on the basis of the required resource amount that is predicted.

Method and apparatus for scheduling resource allocation in wireless communication system

In a wireless communication system, a mobile terminal providing a web service receives information about a web page for a web service from a mobile terminal, receives at least one embedded object included in the web page from a web server, sets a Discontinuous Reception (DRX) interval for the mobile terminal based on a size of the at least one embedded object, transmits information about the set DRX interval to the mobile terminal, and transmits the at least one embedded object to the mobile terminal at a time the set DRX interval ends.

Method and apparatus for providing web service in wireless communication system

In the present invention, a base station determines from a communication system whether a first content, which is requested by a mobile terminal, is saved on a cache memory, attributes a predetermined priority ranking to the first content and saves same on the cache memory when the first content is not saved on the cache memory, and updates the priority ranking of the first content on the basis of a predicted popularity of the first content, wherein the predicted popularity is decided on the basis of change in the number of views of a content that corresponds to a category of the first content.

Method and apparatus for managing cache memory in communication system

A method for estimating an available bandwidth for each User Equipment (UE) in a mobile communication system comprises: a process of receiving estimated bandwidth information for at least one UE from an enhanced node B; a process of checking whether the estimated bandwidth information is received from a Medium Access Control (MAC) layer constituting said enhanced node B, or received through a Radio Link Control (RLC) layer or a Packet Data Control Protocol (PDCP) layer; a process of updating channel quality information using said estimated bandwidth information if it is checked that said estimated bandwidth information is received through the MAC layer; a process of updating an average value weighted with respect to the number of bytes of the bandwidth served by said enhanced node B using the estimated bandwidth information if it is checked that said estimated bandwidth information is received through the RLC or PDCP layer; and a process of calculating the bandwidth currently available by at least one UE using the updated channel quality information or the average value weighted with respect to the number of the bytes of the served bandwidth, and then transmitting the calculated bandwidth to a server.

Method and apparatus for estimating available bandwidth for each user equipment in mobile communication system

A method and apparatus for supporting a handover through the Internet. A source proxy performs receiving, through an eNB from a UE, a connection request to a server, establishing a first TCP session with an anchor proxy designated for the server, and transferring data received from the server through the first TCP session, receiving a handover preparation notification including an IP address of the UE from the eNB, as the UE is handed over to a target eNB; transferring session information associated with the first TCP session and information associated with a target proxy related with the target base station; transferring, to the target proxy, the session information associated with the first TCP session, and when a handover start notification is received from the eNB, freezing the first TCP session, and transferring, to the target proxy, state information associated with data being transmitted through the first TCP session.

Method and apparatus for supporting handover over internet

A method for receiving data in a User Equipment (UE) in a mobile content network is provided. The method includes transmitting a request message, which requests a content, to a first Digital Unit (DU), receiving an Internet Protocol (IP)_ADD message, including information of a second DU which caches the content, from the first DU, updating a Stream Control Transmission Protocol (SCTP) connection according to the information of the second DU included in the IP_ADD message, and receiving data from the second DU using the updated SCTP connection.

Apparatus and method for transmitting/receiving data in mobile content network

A method for controlling data flow by a proxy server connected between a User Equipment (UE) and a content server is disclosed. The proxy server estimates a first amount of data reception indicating an amount of data received by the UE and calculates a second amount of data reception indicating an amount of data received by the proxy server from the content server. The proxy server delays transmission of acknowledgement (ACK) on data received by the proxy server from the content server and waits until a time allowed for the transmission, if the second amount of data reception is greater than the first amount of data reception by a predetermined threshold. The resent disclosure may prevent a waste of network load and unnecessary resources by the proxy server controlling download data rate from the content server.

Method and apparatus for controlling data flow by using proxy server

A method of controlling congestion in a base station of a wireless communication system is provided. The method includes receiving a Service Data Unit (SDU) that includes pieces of data forwarded through a caching proxy, driving a timer each time an SDU is received for processing the SDU using a communication protocol, determining whether the SDU has been processed using the communication protocol until expiration of the timer, and controlling a transmission rate of the caching proxy based on a number of SDUs consecutively discarded or a number of SDUs consecutively transmitted depending on whether the timer has expired.

Method and apparatus for controlling congestion in wireless communication system

The present invention relates to an apparatus and method for providing a web service in a wireless communication system. The apparatus for providing the web service includes: a proxy unit receiving/sending data through the internet; a packet data conversion protocol (PDCP) unit producing and outputting at least one PDCP protocol data unit (PDU) by using the data; and a control unit monitoring the data received from the proxy unit and controlling the proxy unit to transmit data of a size acceptable by the PDCP unit on the basis of the data capacity of the PDCP unit.

Apparatus and method for providing web service in wireless communication system

A method and apparatus manage a buffer of a lower network node in a communication system. A current queue length of the buffer is monitored in every measurement time. A logical region in which the current queue length is included is determined, among a plurality of logical regions included in the buffer. Each of the logical regions corresponds to a queue length determined by using an upper threshold and a lower threshold of a total queue length of the buffer. A congestion state of a network is detected, and a first queue length is readjusted when the current queue length is included in the first queue length which corresponds to a first logical region that exceeds the upper threshold. And a network congestion state signal that represents the detected congestion state of the network is transmitted to the upper network node.

Method and apparatus for adaptively managing buffer in communication system including a plurality of network nodes

An apparatus and a method for flow control between a Packet Data Convergence Protocol (PDCP) layer and a Radio Link Control (RLC) layer in a communication system are provided. The method includes storing Service Data Units (SDUs) to be transferred to the RLC layer, receiving information on a capacity that is currently unused in a buffer of the RLC layer from the RLC layer, and generating Packet Data Units (PDUs) from SDUs, a capacity of which corresponds to the information, among packets stored in a buffer of the PDCP layer, and then transferring the generated PDUs to the RLC layer.

Method and apparatus for flow control between RLC and PDCP in a communication

A method and an apparatus of a serving base station for determining handover of a terminal in a mobile communications system are provided, including determining whether a measurement report message is received from a User Equipment (UE); when receiving the measurement report message, determining whether a channel status value of the UE satisfies a preset condition during a certain time; and determining whether to hand over the UE according to the determination result.

Method and apparatus for determining handover in mobile communication system

A method for performing congestion control in a communication system. The method includes transmitting a request message to a node using a first packet with a highest priority and receiving a response message corresponding to the request message using the first packet and at least one of a plurality of second packets, estimating a one-way delay of the first packet according to a round trip time for the first packet, converting one of the one-way delay of the first packet and the one-way delay of at least one of the plurality of second packets into a quality of service (QoS) level using a predetermined upper delay bound for a corresponding packet, and converting the converted QoS level into an effective congestion level representing a congestion degree in a network and performing congestion control using the effective congestion level.

Apparatus and method for performing congestion control in a communication system

An apparatus is capable of setting HARQ and ARQ parameters in a mobile communication system. The apparatus sets HARQ and ARQ parameters in a mobile communication system. The apparatus sets a default HARQ parameter based on the determined default HARQ parameter setting condition determined by using a plurality of QCIs. The apparatus sets a default ARQ parameter based on the determined default ARQ parameter setting condition determined by using the plurality of QCIs, and updates the set default HARQ parameter and the set default ARQ parameter according to a channel status of a UE.

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Seoul, South Korea

Chul-Ki Lee