Patent application number | Description | Published |
20080207230 | Multi-Mode Communication System and Method Thereof - The present invention relates to a multi-mode communication system and a method thereof. The multi-mode communication system uses a first mode among a plurality communication modes for accessing a first mobility control entity (MCE) among a plurality of MCEs, and communicates data with the first MCE. The multi-mode communication system receives a paging request that has been transmitted from a multi-mode control entity (MMCE) for accessing a second MCE from the first MCE and analyzes the paging request, and puts the first mode into a sleep mode and a second mode for accessing the second MCE into an awake mode based on the analysis. Subsequently, multi-mode UE accesses the second MCE by using the second mode in the awake mode. According to the present invention, an MMCE for multi-mode control is provided to integrate and manage an idle state for each access mode of multi-mode user equipment, thereby minimizing power consumption due to access of the multi-mode UE to a radio access system. In addition, a change of the access of the multi-mode UE to the radio access system due to a paging request can be efficiently performed. | 08-28-2008 |
20090080354 | Multimedia Broadcast Multicast Service Providing System and Method Thereof - The present invention relates to a multi-media broadcast and multicast service (MBMS) providing system and a method thereof. The MBMS providing system provides an MBMS to a terminal having an MBMS function. The MBMS providing system includes a service center and a radio access network. The service center provides MBMS data and metadata having service announcement information abut the MBMS to the terminal. The radio access network periodically transmits establishment information for receiving the metadata to the terminal, and provides the metadata and the MBMS data received from the service center to the terminal through nodes for transmitting data. The establishment information includes first establishment information having a service identifier and IP/UDP parameters for receiving the metadata, and second establishment information for establishing a radio channel. | 03-26-2009 |
20090279515 | Apparatus and a method for service continuity between umts network and wlan - The present invention relates to a method for guaranteeing service continuity between a 3GPP network and a non-3GPP network. According to the exemplary embodiment of the present invention, when a mobile station receiving a service from the 3GPP network moves to the non-3GPP network or it moves back to the 3GPP network from the non-3GPP network, an inter-working gateway inter-works with a SGSN or a GGSN through the 3GPP network to provide a seamless service to a mobile subscriber. | 11-12-2009 |
20090286527 | Apparatus and a method for service continuity between umts network and wlan network - Service continuity is provided between a 3GPP network and a non-3GPP network. When a mobile station having accepted service in the 3GPP network moves to the non-3GPP network or returns from the non-3GPP network to the 3GPP network, an interworking gateway is interworked with a GGSN through a universal tunnel using a packet data network, and accordingly a mobile subscriber may accept seamless service. | 11-19-2009 |
20100150082 | TERMINAL DEVICE OF CARRIER AGGREGATION BASED MOBILE COMMUNICATION SYSTEM AND BUFFER STATUS REPORTING METHOD THEREOF - Provided is a buffer status reporting method of a terminal device in a mobile communication system. The buffer status reporting method includes obtaining a radio resource allocation for a plurality of component carriers from a base station, configuring a plurality of medium access control-protocol data units (MAC-PDUs) including buffer status information corresponding to the plurality of component carriers, the plurality of MAC-PDUs including generated sequence numbers (SNs), and transmitting the plurality of MAC-PDUs to the base station through the plurality of component carriers. | 06-17-2010 |
20100229183 | FRAMEWORK DEVICE OF MOBILE TERMINAL AND METHOD FOR PROVIDING INTEROPERABILITY BETWEEN COMPONENTS - The present invention relates to a framework device of a mobile terminal and a component interoperability guaranteeing method, and is configured by a hardware component generated by a developer and hardware middleware to be linked by a software (or another hardware) component. Therefore, in the exemplary embodiment of the present invention, hardware dependent parts in the hardware component are provided to the hardware middleware through setting parameters so that the hardware middleware is linked with the corresponding hardware component. The hardware middleware receives a request message according to the general inter-ORB protocol (GIOP) transmission system used for the basic communication system of the framework, parses the request message, and converts and transmits data to the corresponding hardware component. The hardware component (hardware logic) to which the request message is transmitted uses data to perform its unique function, and the result is configured as a response message by the hardware middleware and is then transmitted to the software component. | 09-09-2010 |
20100309859 | SESSION CONTROL METHOD FOR USE IN RADIO COMMUNICATION SYSTEM - A session control method for use in a radio communication system is provided. In the session control method, a session management (SM) protocol message for the setting or the cancellation of a session is transmitted with the aid of a radio resource control (RRC) protocol message of a lower layer for the setting or the cancellation of a radio bearer. Therefore, it is possible to reduce the number of signalling messages to a radio interface and thus to minimize signalling delays. In addition, it is possible to realize a many-to-one correspondence between services and bearers and realize efficient packet services in an evolved radio communication system by separately defining service identifiers and bearer identifiers and selectively setting or cancelling a bearer according to the correspondence between services and bearers. | 12-09-2010 |
20110138033 | METHOD FOR PROCESSING EXCEPTIONAL CASE OF ESTABLISHING DEFAULT BEARER IN MOBILE COMMUNICATION SYSTEM AND DEVICE THEREFOR - There are provided a method for processing an exceptional case of establishing a default bearer and a device therefor in order to solve a problem in that a user equipment cannot actually receive an IP service by accessing a packet network while failing in establishing the default bearer in a mobile communication system. A method for processing an exceptional case of establishing a default bearer in a mobility management entity includes: receiving a network attachment request from a user equipment; transmitting a network attachment acceptance including an activation request of the default bearer to the user equipment in response to the network attachment request; and cancelling a network attachment procedure when a completion response to the activation request of the default bearer is not received from the user equipment within a predetermined time. | 06-09-2011 |
20110164588 | MOBILE TERMINAL AND METHOD OF PERFORMING HANDOVER - Enclosed are a mobile terminal and a method of performing handover. The mobile terminal is connected to a selected network among a plurality of networks sensed in accordance with the movement of the mobile terminal so that handover is performed between different networks and that a service used by the mobile terminal is continuously provided. Therefore, the convenience of a user is improved and network utility is improved. | 07-07-2011 |
20110200006 | HANDOVER METHOD OF MOBILE TERMINAL BETWEEN HETEROGENEOUS NETWORKS - The present invention relates to a handover method of a mobile terminal between heterogeneous networks. The present invention may provide a handover method ensuring service continuity between heterogeneous networks by transmitting an IP address of a mobile terminal to a mobile IP management server and activating or inactivating a PDP context when the mobile terminal connected to one of a mobile communication network or a wireless LAN is handed over to the other. | 08-18-2011 |
20120064932 | GROUP CONTROL METHOD FOR MACHINE TYPE COMMUNICATION AND MOBILE COMMUNICATION SYSTEM USING THE METHOD - Provided are a group control method for providing a machine type communication (MTC) service, and a mobile communication system using the method. The group control method includes categorizing one or more MTC devices into one or more MTC groups, assigning MTC group identifiers to respective MTC groups, setting MTC radio network temporary identifiers (MTC RNTIs) according to the MTC group Identifiers, and using the MTC_RNTIs for addressing the MTC devices belonging to the respective MTC groups. | 03-15-2012 |
20120120822 | APPARATUS AND METHOD FOR HANDOVER USING RECEIVED SIGNAL STRENGTH AND RADIAL VELOCITY IN TERMINAL - Provided is a handover apparatus and method for a terminal based on a received signal strength (RSS) and a radial velocity. The handover method may measure an RSS from a currently accessed base station and RSSs from candidate base stations for handover, may measure a radial velocity with respect to the currently accessed base station and radial velocities with respect to the candidate base stations for handover, and may perform a handover by determining a base station for handover based on the measured RSSs and the measured radial velocities when the RSS from the currently accessed base station is less than or equal to a reference RSS. | 05-17-2012 |
20120155404 | DATA TRANSMISSION METHOD FOR DETACHED MACHINE TYPE COMMUNICATION DEVICE AND MOBILE COMMUNICATION SYSTEM PROVIDING MACHINE TYPE COMMUNICATION SERVICE - Provided are a data transmission method for a detached machine type communication (MTC) device and a mobile communication system providing an MTC service. The method includes sensing an MTC device performing a detachment procedure from a network, when the MTC device being detached is sensed, storing, at a first gateway (GW), context information about the MTC device being detached from the network, storing, at the detached MTC device, context information that has been lastly allocated and used before the detachment, receiving, at the first GW, downlink data transmitted from an MTC server to the detached MTC device, and buffering the received data, transmitting a paging message to the detached MTC device, and performing, at the MTC device receiving the paging message, an attachment process to the network, and receiving the DL data buffered in the first GW. | 06-21-2012 |
20120155438 | METHOD OF REORDERING AND REASSEMBLING PACKET DATA IN RADIO LINK CONTROL LAYER - A method includes recognizing, by an RLC entity of a reception side, a transmission time interval (TTI) start time, initializing a count of the number of PDUs processed in a TTI, determining whether the reordering timer has expired, performing a procedure of reassembling RLC service data units (SDUs) and transmitting the reassembled RLC SDUs to an upper layer and updating the reordering timer when the reordering timer has expired, performing the procedure and updating the reordering timer when an RLC PDU received from a lower layer is an RLC PDU which should be received by retransmission of a transmission side before reordering timer expiration, and processing RLC SDUs received from the upper layer, wherein the procedure limits the number of RLC PDUs to be processed within a TTI using the count of the number of PDUs to be processed within the TTI. | 06-21-2012 |
20120157050 | METHOD OF CONTROLLING MACHINE TYPE COMMUNICATION DEVICE AND WIRELESS COMMUNICATION SYSTEM PROVIDING MACHINE TYPE COMMUNICATION SERVICE - Provided are a method of controlling a machine type communication (MTC) device in a radio communication network providing an MTC service, and a wireless communication system providing an MTC service. The method includes registering an MTC device in an MTC server, performing, at the MTC server, authentication of an MTC user to be connected with the MTC device, requesting, at the MTC server, a state report on the MTC device requested by the MTC user from the MTC device and transmitting state information received from the MTC device to the MTC user, and performing, at the MTC server, service control for the MTC device according to a request of the MTC user. | 06-21-2012 |
20120157141 | CONTENTION BASED UPLINK TRANSMISSION METHOD - Provided is a contention based uplink transmission method. A base station may assign a contention based radio network temporary identifier (CB-RNTI) to a plurality of terminals, and terminals assigned with the same CB-RNTI may perform contention uplink transmission using the same radio resource. | 06-21-2012 |
20120163169 | OVERLOAD CONTROL APPARATUS AND METHOD FOR MACHINE TYPE COMMUNICATION SERVICE AND WIRELESS COMMUNICATION SYSTEM PROVIDING MACHINE TYPE COMMUNICATION SERVICE - Provided are an overload control apparatus and method for a machine type communication (MTC) service. The overload control method includes, when an overload state has occurred, including an overload indicator (OI) in a MAC subheader in a random access response to be transmitted to a terminal and transmitting the random access response, before an MTC device wanting to perform a random access procedure transmits a random access preamble to the base station, searching for a random access response transmitted from the base station, when the transmitted random access response is searched for, peeking at the random access response and receiving it, and when it is determined that an OI is included in the random access response, waiting, at the MTC device, for a predetermined delay time and transmitting the random access preamble for performing the random access procedure to the base station. | 06-28-2012 |
20120163262 | APPARATUS AND METHOD FOR MONITORING BATTERY LIFESPAN OF MACHINE TYPE COMMUNICATION DEVICE - The present invention relates to an apparatus and method for monitoring a battery lifespan of a machine type communication device, and more particularly, to an apparatus and method for preventing a disconnection in communication due to a battery being expended by verifying a battery lifespan of the machine type communication device in a network. The present invention may include detecting a residual capacity of a battery power supply, comparing the residual capacity of the battery power supply to a threshold required for a power supply, and warning against a shortage of the residual capacity of the battery power supply when the residual capacity of the battery power supply is less than or equal to the threshold required for the power supply. | 06-28-2012 |
20120163271 | DATA TRANSMITTING METHOD FOR MACHINE TYPE COMMUNICATION SERVICE AND MOBILE COMMUNICATION SYSTEM USING THE SAME - Provided is a data transmitting method for providing a machine type communication (MTC) service in a mobile communication system. The method includes subscribing, by the MTC device, to a multicast service, and recognizing, by the MTC device, at least one wirelessly announced multicast service and performing joining for a desired multicast service. In cases other than a case in which the MTC device performs the joining to transmit collected data information, the method further includes starting, by a broadcast multicast-service center, a session for the multicast service, performing group paging for at least one MTC device that will receive the multicast service, and transmitting multicast service-related data to the at least one MTC device that will receive the multicast service. | 06-28-2012 |
20120163296 | METHOD OF TRANSMITTING SMALL AMOUNT OF UPLINK DATA AND METHOD OF RECEIVING SMALL AMOUNT OF UPLINK DATA - Disclosed is a method of transmitting and receiving a small amount of uplink data. A method of transmitting uplink data includes detecting uplink data to be transmitted, determining whether or not uplink data transmission is necessary only once, transmitting a service request message including information instructing that a data radio bearer not be generated when it is determined that uplink data transmission is necessary only once, starting a radio resource control (RRC) connection setup process, and performing the uplink data transmission once using a signaling radio bearer without generating the data radio bearer with reference to the information instructing that the data radio bearer not be generated, during the RRC connection setup process, when it is determined that \ uplink data transmission is necessary only once. | 06-28-2012 |
20120163313 | CALL PROCESSING METHOD FOR USE IN MACHINE-TYPE COMMUNICATION TERMINAL - Disclosed is a call processing method for use in a machine-type communication terminal. The call processing method includes transmitting, by a terminal, a radio resource control (RRC) connection request message to a base station, receiving, by the terminal, an RRC connection setup message from the base station, receiving, by the terminal, an uplink (UL) resource allocation grant message from the base station in a state in which a service request message and a buffer status report message are not transmitted to the base station, and transmitting, by the terminal, a message for call processing corresponding to the UL resource allocation grant message. It is possible to rapidly and efficiently perform a call processing procedure and lengthen the life span of the terminal by reducing power consumption of the terminal that uses battery as an energy source. | 06-28-2012 |
20120165058 | APPARATUS AND METHOD FOR CONTROLLING RANDOM ACCESS OF MACHINE TYPE COMMUNICATION DEVICE AND WIRELESS COMMUNICATION SYSTEM PROVIDING MACHINE TYPE COMMUNICATION SERVICE - Provided are an apparatus and method for controlling random access of a machine type communication (MTC) device in a wireless communication network providing an MTC service, and a wireless communication system providing an MTC service. The method includes inserting, at a base station, information about a random access preamble group for an MTC device and information about a random access time for an MTC device in system information (SI), and transmitting, at the base station, the SI to at least one MTC device. | 06-28-2012 |
20120182925 | SCHEDULING APPARATUS AND METHOD, USER EQUIPMENT, AND RELAY-BASED MOBILE COMMUNICATION SYSTEM - Provided are a scheduling apparatus and method, an user equipment, and a relay-based mobile communication system. The scheduling apparatus receives information on a channel state of the access zone from the eNB UE separately from the information on the channel state of the relay zone, performs scheduling for the eNB UE in a subsequent relay zone temporally following the relay zone on the basis of the information on the channel state of the relay zone, and performs scheduling for the eNB UE in a subsequent access zone temporally following the access zone on the basis of the information on the channel state of the access zone. | 07-19-2012 |
20130148526 | APPARATUS AND METHOD FOR CONTROLLING GROUP SETTING IN DEVICE-TO-DEVICE COMMUNICATION - Provided is a device-to-device (D2D) group communication control method. In the D2D group communication control method, D2D group session information is generated and transmitted when a D2D group service request or a D2D group communication sensing report is received. When a D2D group session confirmation message is received according to the D2D group service request or the D2D group communication sensing report, D2D group session setup is determined to be successful. A D2D group service response message or a D2D group service start message is transmitted to at least one device belonging to a D2D group for which the D2D group session setup is completed. Thereby, centralized D2D group session management can be performed. Accordingly, the number of connections of separate direct communication can be reduced and hence a signaling load can be reduced. | 06-13-2013 |
20130148637 | DEVICE-TO-DEVICE COMMUNICATION CONTROL METHOD - Provided is a device-to-device (D2D) communication control method. A D2D communication control method performed in a control apparatus includes allocating resources for D2D communication, and including information about the allocated resources in D2D-downlink control information (DCI) and transmitting the D2D-DCI to terminals that will perform D2D communication. Accordingly, it is possible to efficiently allocate radio resources for D2D communication, and reduce the load of self-control of terminals. | 06-13-2013 |
20130150058 | METHOD OF CONTROLLING COMMUNICATION RESOURCES FOR CELLULAR MOBILE COMMUNICATION SYSTEM-BASED DEVICE-TO-DEVICE COMMUNICATION - Provided is a method of controlling communication resources for cellular mobile communication system-based device-to-deice (D2D) communication. The method includes selecting, at a base station, at least two devices, which are performing cellular communication in the same cell, as D2D candidates, measuring environment-based information on the selected D2D candidates to select at least one D2D pair, and allocating uplink (UL) resources or downlink (DL) resources to the D2D pair. | 06-13-2013 |
20130150061 | DEVICE-TO-DEVICE GROUP COMMUNICATION METHOD AND DEVICE USING THE SAME - Provided are a device-to-device (D2D) group communication method and a device using the same. The method includes transmitting a scheduling request for D2D group communication to a base station, receiving first radio resource information for a status report of D2D data to be transmitted from the base station, transmitting a D2D buffer status report to the base station through a first radio resource, receiving second radio resource information including D2D resource allocation information necessary for the D2D group communication from the base station, and transmitting control information for the D2D group communication including a D2D group identifier (ID) as a device ID and D2D user data to two or more communication partner devices belonging to the D2D group. | 06-13-2013 |
20130150108 | DEVICE-TO-DEVICE COMMUNICATION METHOD BASED ON CELLULAR COMMUNICATION SYSTEM - Provided is a device-to-device (D2D) communication method based on a cellular communication system. The D2D communication method is based on a hierarchical D2D communication structure configured with a representative terminal and belonging terminals. Accordingly, the D2D communication method can be applied to various applications and business models. Also, a belonging terminal performs data communication only with an adjacent representative terminal due to a middle gathered structure through the representative terminal, so that the D2D communication method can be applied to an application requiring low power consumption. Further, the D2D communication method can be used as a solution for a Proxy machine-to-machine (M2M) device due to powerful security of mobile communication compared to that of a sensor network, reliability of data transmission, and speed of data transmission resulting from low latency. | 06-13-2013 |
20130258996 | METHOD OF ALLOCATING RADIO RESOURCES FOR DEVICE-TO-DEVICE COMMUNICATION IN CELLULAR COMMUNICATION SYSTEM - A resource allocation method of a base station for a device-to-device (D2D) communication link based on a cellular communication system includes providing operation information which includes information about one or more resource allocation patterns available for the D2D communication link to terminals which perform D2D communication according to each terminal and each D2D communication link, receiving a buffer status report (BSR) from the terminals which perform the D2D communication, and transmitting an indication value which indicates at least one of the resource allocation patterns based on the BSR. Accordingly, in the resource allocation method, low capacity of downlink control channels is required by the base station, yet flexible and efficient allocation of resources is enabled. | 10-03-2013 |
20140113545 | WIRELESS RELAYING METHOD, METHOD OF CONTROLLING RELAY MODE, AND WIRELESS RELAY APPARATUS - Provided are a wireless relaying method, a method of controlling a relay mode, and a wireless relay apparatus using the wireless relaying method. The wireless relaying method of a relay node (RN) includes operating in an amplify-and-forward (AF) mode of amplifying and forwarding a received signal upon setup, broadcasting identifier (ID) information on the RN, and, when a mode change message is received from an evolved node-B (eNB), changing an operating mode to a decode-and-forward (DF) mode. Accordingly, it is possible to improve resource efficiency while having an advantage of minimum delay time for relay. | 04-24-2014 |
20140120926 | METHOD OF OPERATING BASE STATION AND TERMINAL IN CELLULAR TELECOMMUNICATION SYSTEM FOR OPERATING MULTIPLE BEAMS - Provided is an operation method of a cellular telecommunication system for operating multiple beams. In an operation method of a base station, a beam identifier (ID) is allocated to each of the multiple beams, and a terminal reports a beam ID of a selected beam to the base station. When the operation method of the cellular telecommunication system is used, the base station can rapidly sense the entry of the terminal into a specific beam area. Even when the terminal moves between beam areas, it is possible to rapidly make a beam area change with a minimum overhead without performing random access again or performing a complex procedure such as a handover procedure. | 05-01-2014 |
20140153423 | METHOD FOR HANDOVER OF TERMINAL USING MULTI-CONNECTION IN CELLULAR COMMUNICATION SYSTEM - A method for handover of a terminal using a multi-connection in a cellular communication system is disclosed. The method for handover according to the present invention includes a multi-connection setting procedure of setting a connection to a second base station in addition to a connection to a first base station according to movement of a terminal in a direction from the first base station to the second base station, and a connection release procedure of releasing the connection to the first base station. Specifically, the present invention may be applied in a multi-beam management environment of super high frequency (SHF) and extremely high frequency (EHF) bandwidths, and may obtain an effect of decreasing signaling overhead and process latency of a conventional handover method. | 06-05-2014 |
20140169265 | COMMUNICATION METHOD OF BASE STATION AND TERMINAL IN COMMUNICATION SYSTEM INCLUDING RELAY - A communication method of a terminal and a base station including a relay is provided. When the terminal attempts a connection to the base station, relays on a communication path include and transmit identifiers thereof in a first message, and the relays and the base station can simply set a communication path to the terminal. When the base station transmits data to the terminal, if the base station includes and transmits an identifier of the terminal in the data, each relay that is located on a communication path forwards data through a preset communication path. | 06-19-2014 |
20150038148 | METHOD AND APPARATUS FOR HANDOVER BASED ON COOPERATION BETWEEN BASE STATIONS - A method and apparatus for handover based on cooperation between base stations are provided. When a message indicating handover completion is received from a terminal that has determined whether to perform handover and that has performed handover to a target base station, the target base station transmits a message requesting information on the terminal to a serving base station of the terminal. Then, the target base station receives information on the terminal from the serving base station and transmits data to the terminal. | 02-05-2015 |