| Patent application number | Description | Published |
|---|
| 20080291874 | HANDOVER APPARATUS AND METHOD IN A HETEROGENEOUS WIRELESS COMMUNICATION SYSTEM - Provided is a handover method, in which a call manager of a network having a Circuit Switching (CS) network, a Long Term Evolution (LTE) network, and an Internet Protocol Multimedia Subsystem (IMS) network, provides handover, from the LTE network to the CS network, to a terminal that uses one radio channel. The handover method includes upon receiving a request for handover from the terminal via a node of the LTE network, establishing a line to a Mobile Switching Center (MSC) of the CS network; sending, to the call manager, a request for a change in a session to another party's terminal in communication with the terminal, to establish an Internet Protocol (IP) bearer between the call manager and the other party's terminal; and sending a handover command to the terminal during the establishment of an IP bearer, to establish a radio channel to the base station of the CS network. | 11-27-2008 |
| 20090005048 | APPARATUS AND METHOD FOR CALL HANDOVER BETWEEN PACKET NETWORK SYSTEM AND CIRCUIT NETWORK SYSTEM - A method and apparatus for performing handover on a voice call between a packet network system and a circuit network system is provided. Considering a communication environment where a UE cannot simultaneously use radio resources of both the next generation mobile communication system (LTE) and the legacy mobile communication system (e.g., GSM/WCDMA), the present invention proposes an SCSE for performing signal translation between the packet switched network and the circuit switched network and anchoring a voice call in the application level, and supports a continuous voice call using the SCSE. | 01-01-2009 |
| 20090270107 | COMMUNICATION SYSTEM AND METHOD FOR SUPPORTING DIRECT COMMUNICATION BETWEEN FEMTO CELL AND MACROCELL - A communication system and method for supporting direct communication between a femto base station and a macro base station are provided. The communication system includes at least one macro base station which allocates a resource to one or more user equipments. The communication system also includes at least one femto base station which operates in a base station mode for serving terminals located within a service area of the at least one femto base station and operates in a user equipment mode for communicating with the at least one macro base station using the resource allocated by the at least one macro base station. | 10-29-2009 |
| 20100075635 | ACCESS ADMISSION CONTROL METHOD AND SYSTEM FOR MOBILE COMMUNICATION SYSTEM - An access admission control method and system for and SAE/LTE system is provided for determining whether to accept or reject an access of a User Equipment (UE) to a Home evolved Node B (HeNB) based on the subscriber information of the UE. In an access admission control method according to the present invention, a HeNB or HeNB Gateway (HGW) transmits, when an access request message is received from a UE, the access request message to a Mobility Management Entity (MME) together with a CSG ID of the HeNB, and the MME determines, whether to accept or reject the access of the UE to the HeNB based on whether the CSG ID is contained in a white list associated with the UE. | 03-25-2010 |
| 20100111041 | COMMUNICATION SYSTEM AND DATA TRANSMISSION METHOD THEREOF - A communication system and data transmission method thereof are provided. The method includes adding an end marker to the end of source data and transmitting the source data and the end marker for a Packet data network GateWay (PGW) to a source evolved Node B (eNB) if a handover is carried out from the source eNB to a target eNB while the PGW is transmitting the source data to the source eNB, forwarding the source data and the end marker from the source eNB to the target eNB, transmitting target data immediately following the source data from the PGW to the target eNB, and transmitting the source data and the target data, which is classified into the source data by the end marker and immediately follows the end of the source data, from the target eNB to user equipment. | 05-06-2010 |
| 20100210267 | REDIRECTION METHOD OF FEMTO CELL AND COMMUNICATION SYSTEM BASED THEREON - A redirection method of a femto cell is provided together with a communication system based thereon. A serving gateway, connected with a specific femto cell, or an additional server determines whether there is a need for a redirection of the femto cell by using a load condition of the serving gateway or a target gateway. If the redirection is determined, the femto cell receives redirection instructions from the serving gateway to the target gateway and then the redirection is performed. Since the femto cell is redirected from the overloaded femto gateway to another femto gateway, the femto cell can continuously provide a communication service to user terminals. | 08-19-2010 |
| 20100234023 | ACCESS CONTROL METHOD USING FEMTO BASE STATION AND COMMUNICATION SYSTEM THEREFOR - A communication system including a femto base station and a method for controlling access of a User Equipment (UE) in the communication system are provided. The method includes receiving a service request message from the UE and transmitting the service request message to a core network entity within a core network, receiving, from the core network, UE information and Local BreakOut (LBO) service information regarding the UE which is used to provide an LBO service to the UE, and providing the LBO service to the UE using the received information. Thus, a core network controls access of the UE so that the UE can directly access an Internet network through the LBO. | 09-16-2010 |
| 20110142239 | SECURITY PROTECTED NON-ACCESS STRATUM PROTOCOL OPERATION SUPPORTING METHOD IN A MOBILE TELECOMMUNICATION SYSTEM - The present invention relates to a method and system for the management of the mobility, the management of an idle mode, the registration management (management of attachment and detachment), and the location management (management of tracking area) of a terminal by using a non-access stratum (i.e., network stratum, hereinafter referred to as “NAS”) in a mobile telecommunication network. To this end, the method for the management of mobility, the management of an idle mode, the registration management, and the location management of a terminal by using a NAS protocol, i.e., messages, according to an embodiment of the present invention, includes a terminal (hereinafter, referred to as “UE”) and a mobility management entity (hereinafter, referred to as “MME”), and addresses to a method for efficiently processing security protected NAS messages if received messages are security protected NAS messages, in a case of sending or receiving messages serving as EMM (EPS Mobility Management) messages, i.e., mobility management messages, in a network such as an EPS (Evolved Packet System) of 3GPP, when the terminal performs handover in an active mode, performs location management in an idle mode, and registers to a network, thereby achieving improved efficiency in the mobility management, the position management, and the registration management of a terminal. | 06-16-2011 |
