Abstract: A method and apparatus for providing an MBMS service to a plurality of cells in a mobile communication system are provided. In a mobile communication system including an RNC for providing an MBMS service and a plurality of Node Bs connected to the RNC, for providing the MBMS service to UEs within a plurality of cells. The RNC is configured to have a plurality of lower-layer entities corresponding to the cells. An RLC and PDCP entity that area common to the cells, receive MBMS data from an upper layer and transmit, upon receiving a request from one of the lower-layer entities, the MBMS data to the lower-layer entity. Therefore, the RNC can provide the MBMS service more efficiently, and unnecessary consumption of system resources is reduced.

Abstract: A method for ciphering MBMS (Multimedia Broadcast/Multicast Service) data in a wired/wireless communication system is provided. The MBMS service enables the same service or desired services to be provided to a number of users. In the ciphering method, a ciphering key for encoding MBMS data is previously provided to an authorized UE, and the authorized UE is informed of when MBMS data encoded using the ciphering key is to be transmitted, thereby preventing unauthorized UEs from illegally receiving the MBMS service.

Abstract: A method and apparatus for transmitting and receiving MBMS control information in an MBMS mobile communication system are provided. An RNC transmits MBMS control information for an MBMS service on an MCCH mapped to one of a plurality of CCPCHs available in a cell of the mobile communication system, and transmits a paging message on a logical channel mapped to each of the CCPCHs. Here, the paging message requests reception of the MBMS control information. A UE monitors one of the plurality of the CCPCHs, receives the paging message on the monitored CCPCH, switches to the CCPCH having the MCCH, and receives the MBMS control information on the switched to CCPCH. Therefore, resource consumption is minimized in transmitting MBMS control information in a cell and the reception reliability of the MBMS control information in the UE is increased.

Abstract: A paging system and method for use in a multimedia/broadcast multicast service (MBMS). The paging system checks a paging indicator channel of a UE (User Equipment), and determines whether there is a paging signal associated with a broadcast service. If the paging signal associated with the broadcast service is detected, the paging system recognizes the channel information indicative of the paging fact, checks paging information included in an ID for differentiating between the broadcast service and other broadcast services and a paging response indicator adapted to determine a transmission channel scheme of the broadcast service, establishes a radio link, and receives control information using the radio link. The base station controller adapted to manage a cell including the UE transmits MBMS transmission scheme information to the UE in advance using the paging information, resulting in maximum use efficiency of RRC (Radio Resource Controller) resources.

Abstract: A method of paging UEs(User Equipments) on a multimedia broadcast/multicast service (MBMS) service basis in a mobile communication system supporting MBMS. To receive a PCH (Paging Channel) using a plurality of PICHs (Paging Indicator Channels) in a mobile communication system having a plurality of PCHs transmitted in every predetermined periods, for paging UEs requesting a broadcasting service, and the plurality of PICHs transmitted between first and second successive PCHs among the plurality of PCHs. A UE receives a PICH assigned to the UE if the PICH is among the plurality of PIs, determines whether the second PCH corresponding to the broadcasting service will be transmitted by a broadcasting service PI set in an unused part of the received PICH, and receives the second PCH destined commonly for all UEs that determine that the second PCH will be transmitted to the UEs among UEs that receive the PICH.

Abstract: A mobile communication system includes a radio network controller (RNC), at least one Node B, and at least one user equipment (UE) able to receive a broadcast service from the Node B. The RNC generates a paging control frame based on the paging information including paging indicator bit mapping information indicating paging for each broadcast service; transmits the paging control frame to the Node B; and receives a response message to the paging control frame from the Node B. The Node B receives paging information including paging indicator bit mapping information indicating paging for each broadcast service, from the RNC through a paging control frame; transmits a response message including the paging information to the RNC in response to the paging control frame; and transmits the paging indicator to the UE based on the paging information.

Abstract: A mobile communication system supporting an MBMS service includes a Node B having a plurality of transport channels and at least one UE communicating with the Node B. The Node B selects a transport channel for MBMS control information among a plurality of transport channels mapped to a secondary common control physical channel; transmits a system information block indicating the selected transport channel to a cell area where UEs are located, using a primary common control physical channel; and transmits the MBMS control information to the cell area using the selected transport channel.

Abstract: A cell reselection method by a user equipment (UE) receiving an MBMS service in a serving cell of a mobile communication system. The UE receives control data of the serving cell, including configuration information necessary for accessing MBMS control channels (MCCHs) of neighbor cells and control information necessary for accessing an MBMS data transport channel (MTCH) of the serving cell, over an MCCH of the serving cell, and stores the received control data, while the MBMS service is provided in the serving cell. If cell reselection to a target cell, which is one of the neighbor cells is determined, the UE moves to the target cell by utilizing configuration information stored for the target cell.

Abstract: A method for managing information on user equipments (UEs) in a mobile communication system supporting an MBMS (Multimedia Broadcast/Multicast Service) service. A radio network controller (RNC) provides a packet switched (PS) service and a circuit switched (CS) service to the UEs. A UE that is in a Packet Mobility Management-Idle (PMM-Idle) mode after joining at least one MBMS service, transmits MBMS service-related information thereof to the RNC, and the RNC stores the MBMS service-related information in a first service context for the MBMS service held in the RNC, together with information on the UE.

Abstract: A method for enabling a user equipment (UE) to recover from a multimedia broadcast/multicast service (MBMS) data error in a mobile communication system. The mobile communication system includes a radio network controller (RNC) and at least one cell for transmitting MBMS data to at least one UE according to a control operation of the RNC. The RNC transmits first control information to UEs located in each cell. Each of the UEs receives the first control information and the MBMS data. When an error in the received MBMS data is detected, the RNC is notified that an MBMS data reception error has occurred. Response information associated with the MBMS data reception error is transmitted from the UE to the RNC. The UE determines whether control information contained in the response information matches the first control information. The MBMS data reception error is recovered from, according to a result of the determination.

Abstract: A mobile communication system including an SRNC, a TRNC, and an SGSN. The UE notifies cell movement to the TRNC, and receives, from the TRNC, whether a packet service available in a first cell is available in a second cell, and radio resource information for receiving the packet service in the second cell, and receives the packet service from the second cell. The TRNC requests an authentication for the UE from the SGSN, and receives, from the SGSN, information on whether the UE can receive the packet service, and packet service information for the packet service the UE is receiving in the first cell, if the UE can, and transmits, to the UE, whether the packet service is available, and radio resource information for providing the packet service. The SGSN transmits, to the TRNC, information on whether the UE can the packet service, and packet service information.

Abstract: A method for controlling random accesses of user equipments (UEs) in a mobile communication system. The mobile communication system includes Node-Bs for performing radio communication with the UEs located in a number of cells, a radio network controller (RNC) for controlling the Node-Bs and a service node for connecting the RNC to a core network (CN), and transmits broadcast/multicast service data from the CN to the UEs through the RNC. The service node provides information indicating the number of UEs associated with group signaling to the RNC that controls packet data service for the UEs. When the UEs respond to the group signaling, the RNC refers to the number of UEs associated with the group signaling located in a specific cell, calculates a back-off window value indicating a back-off range necessary for controlling the random accesses of the UEs, contains the calculated back-off window value in a group signaling message, and transmits the group signaling message to the UEs.

Abstract: A system and method for providing a packet service to a user equipment (UE) when the UE moves to a second cell managed by a second radio network controller (RNC), the UE requesting a permission to receive the packet service in a first cell managed by the first RNC, in a mobile communication system providing the packet service. In the system and method, the first RNC transmits control information necessary for providing the packet service to the UE, to the second RNC. The second RNC analyzes the control information and notifies the first RNC that the second RNC is providing the packet service, when the second RNC can provide the packet service. The second RNC transmits packet service data to the UE.

Abstract: A control message transmitting/receiving method in an MBMS-supporting mobile communication system. In the present invention, an RNC periodically transmits control messages related to MBMS RB setup to UEs. Thus, although a UE initially fails to receive an intended MBMS service, it can set up an MBMS RB by receiving a related retransmitted control message. Also, the RNC periodically provides information about ongoing MBMS services on a cell basis so that a UE can decide whether its requested MBMS service is in progress and request information required to set up an MBMS RB for the MBMS service to the RNC by individual signaling.

Abstract: A method for paging user equipments (UEs) receiving a second service in a mobile communication system providing a first service and the second service. A serving General Packet Radio Service (GPRS) support node (SGSN), determines an identifier indicating the second service and a coefficient related to paging occasions for transmitting a paging instance indicating presence/absence of paging information related to the second service in response to a request for the second service from UEs, and transmits the determined identifier and coefficient to a radio network controller (RNC). The RNC transmits the identifier and the coefficient to the UEs, determines the paging occasions and transmission times of the paging instance in each of the paging occasions by using the identifier and the coefficient, and transmits the paging instances over a first channel at the transmission times of the paging instances for each of the paging occasions so that the UEs recognize presence/absence of the paging information.

Abstract: An apparatus and method for providing a multimedia broadcast/multicast service (MBMS) service between an RNC and a Node B in a mobile communication system including multiple UEs, the Node B having multiple cells, and the RNC for controlling the Node B. The RNC transmits a request message including first information that can be determined according to services and second information that can be determined according to cells, to the Node B in order to support the MBMS service. The Node B generates a service context for providing an MBMS service according to the first information and the second information of the request message, and allocates identification information of the service context. The Node B sets up a transport bearer to the Node B according to the first information in the service context, and then, if the MBMS service data is received from the RNC over the transport bearer, transmits the received MBMS data to the respective cells so that the UEs receive the MBMS data.

Abstract: A method and apparatus for providing a service based on multiple data rates using scalability of a multimedia CODEC in an asynchronous code division multiple access (CDMA) communication system, which provides a multimedia broadcast and multicast service (MBMS). An entire cell area is divided into a first area and a second area. Specific data is separated into first data and second data. The first data is transmitted to the first area, and the second data is transmitted to the second area. A first electric power controller controls electric power for the first data. A second electric power controller controls electric power for the second data. A user equipment (UE) located in the second area receives the first data and the second data. The UE located in the second area combines the first data and the second data, thereby generating one data item.

Abstract: A method and apparatus for providing an MBMS (Multimedia Broadcast/Multicast Service) service to user equipments (UEs) that desire to receive the MBMS service, in a code division multiple access (CDMA) mobile communication system including a plurality of radio network controllers (RNCs), a plurality of SGSNs (Serving GPRS (General Packet Radio Service) Supporting Nodes) connected to each of the RNCs, and a plurality of the UEs wirelessly connectable to the RNCs, and providing the MBMS service to the UEs. The UEs request a desired MBMS service, and receive an MBMS service provided in response to the request. The RNCs transmit data related to the MBSM service to UEs wirelessly connected to thereto among UEs that requested the service. The SGSNs control a procedure related to the MBMS service for the UEs that requested the service.

Abstract: A method for providing soft handover in a code division multiple access mobile communication system supporting multicast multimedia broadcast service. In an asynchronous mobile communication system supporting an MBMS service, when a UE moves to a region where it can receive data from a plurality of Node Bs, soft handover is performed on the UE. Thus, even though an MBMS user moves from an existing cell to a new cell, a stable MBMS service is provided. Furthermore, the UE can soft-combine data received from a plurality of Node Bs.

Abstract: A method of performing an inter-RAT measurement for a handover from NB-TDD to GSM is provided. A UE, as it moves from an NB-TDD Node B to a GSM cell, receives a measurement control message from the NB-TDD Node B. The UE then measures the strength of a signal received from the GSM cell and verifies its identification for a predetermined measuring time. If the UE successfully verifies the identification of the GSM cell for the measuring time, it reports the signal strength measurement and the verified GSM cell identification to the NB-TDD Node B. If the UE fails to verify the identification of the GSM cell for the measuring time, it reports only the signal strength measurement to the NB-TDD Node B.