摘要:
A broadcasting system for providing access information of a broadcast service, wherein a transmission apparatus generates the access information for at least one of a broadcast network and an interaction network, from which the broadcast service is transmitted, and transmits the access information to a terminal via a specific communication network. A reception apparatus receives the access information of the broadcast service via the communication network, analyzes the received access information to determine a network from which the broadcast service is provided, among the broadcast network and the interaction network, and sets an access address for reception of the broadcast service.
摘要:
A method and apparatus are provided for transmitting packet data over an uplink channel in a mobile communication system in which retransmission of a packet is possible using a hybrid automatic retransmission request (HARQ) technique. A base station receives a packet data unit (PDU) from a terminal and determines whether the base station can calculate a retransmission number (RSN) indicating the number of retransmissions for the PDU. If the base station cannot calculate the RSN for the PDU, the base station sets the RSN to a special value indicating that the number of retransmissions for the PDU is unknown, and transmits the set RSN to a serving radio network controller (SRNC) along with the PDU.
摘要:
Disclosed is a method for synchronizing a scrambling code in a CDMA communication system including a UTRAN (UMTS Terrestrial Radio Access Network) and a plurality of user equipments (UEs), using orthogonal codes for identifying the UEs and a single scrambling code for identifying the UTRAN by the UEs, and employing an uplink synchronous transmission scheme (USTS) where the UEs synchronize frames of uplink dedicated physical channels (DPCHs) using the single scrambling code. The UEs receive a reference signal including reference time information provided from the UTRAN and transmit a random access channel (RACH) based on the reference time. The UTRAN receives the random access channels from the UEs to measure a propagation delay time (PD) of each random access channel signal from the UEs, and transmits a transmission time adjustment value calculated using the measured propagation delay time and a time offset τDPCH,n between a transmission time point of the reference signal and a transmission time point of a downlink DPCH. Each UE determines a transmission time of the uplink DPCH by receiving the transmission time adjustment value, and scrambles a message with the orthogonal code and a scrambling code generated at the reference time, at the transmission time so determined as to transmit the message over the uplink DPCH.
摘要:
An apparatus randomly assigns downlink sub-frame time slots for transmitting user data in an NB-TDD CDMA (Code Division Multiple Access) communication system. In the apparatus, a multiplexer creates a user data part by multiplexing user data for UEs (User Equipments), a TFCI (Transport Format Combination Indicator) symbol for the user data, and a TPC (Transmission Power Control command) symbol for controlling transmission power of a downlink channel, and a controller randomly assigns time slots for transmitting the user data part in the sub-frames, based on a time slot number initially assigned for the user data part, a sub-frame number at a transmission point of the user data part, and the number of assigned uplink time slots in the corresponding sub-frame.
摘要:
Disclosed is a method for controlling uplink transmission power in a handover region by a UE in communication with a Node B using an FCS scheme. The UE stores TPC commands received for a specific duration from a plurality of cells in an active set, if the UE enters in the handover region during communication with a current best cell. If a next best cell is selected from the plurality of the cells, the UE determines a transmission power offset by comparing TPC commands from the current best cell with TPC commands from the next best cell for the specific duration at a time point where the best cell is changed from the current best cell to the next best cell. The UE transmits initial transmission power for the next best cell at a transmission power level determined considering the transmission power offset.
摘要:
A method and apparatus are provided for transmitting user equipment (UE) status information in communication with one serving Node B and at least one non-serving Node B in a mobile communication system. The method and apparatus comprise generating transport channel data including UE status information; transmitting the transport channel data to the serving Node B and the at least one non-serving Node B, receiving a response signal for the transport channel data from the serving Node B, and retransmitting the transport channel data if the response signal received from the serving Node B is a non-acknowledge (NACK) signal, and ending the retransmission of the transport channel data if the response signal received from the serving Node B is an acknowledge (ACK) signal.
摘要:
An apparatus in a mobile communication system for providing a multimedia broadcast/multicast service (MBMS) and a method for giving notification of an MBMS service while considering transmission mode are provided. A controlling radio network controller (CRNC) sends, to a serving radio network controller (SRNC), transmission mode information indicating point-to-point (PTP), point-to-multipoint (PTM), or “Not provide” cell by cell. The SRNC determines service notification on the basis of the transmission mode information. The CRNC minimizes a signaling load on an Iur interface when sending, to the SRNC, the transmission mode information suitable for each cell.
摘要:
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.
摘要:
A method and apparatus for transmitting/receiving encryption information in a mobile broadcast system providing broadcast service (BCAST) are disclosed. In the mobile broadcast system, a broadcast (BCAST) Service Distribution/Adaptation (BSD/A) unit comprises a transmitter for transmitting a Registration Key Material (RKM) request message for requesting delivery of an RKM for registration of the BCAST service of a terminal to a BCAST Subscription Management (BSM) unit managing subscriber information of the terminal, and a receiver for receiving an RKM request response message from the BSM unit. The RKM request message includes an identifier (ID) of the BCAST service, and the RKM request response message includes the ID of the BCAST service and the RKM. The transmitter transmits a Long-Term Key Message (LTKM) request message for requesting delivery of an LTKM provided to the terminal during subscription of the BCAST service to the BSM unit.
摘要:
An apparatus and method for managing a preference channel are provided which can reduce a delay time when a channel change is made between preference channels, by storing a preference channel directly selected by a mobile terminal user in a mobile broadcast system. A mobile terminal receives and demultiplexes multiplexed logical channels on which data streams are transmitted from a service provider through a communication network. Preference channels of the demultiplexed logical channels are dynamically allocated to decoding buffers using stored information. A decoding time at which data of the decoding buffers is accessed and decoded is computed using reference information. A decoding operation is performed at the computed decoding time, and decoded channel-by-channel elementary streams are stored in a memory. The decoded channel-by-channel elementary streams stored in the memory are displayed on a screen of the mobile terminal.