摘要:
An encoding method and apparatus for a DCH (Dedicated Channel) encoder and a DSCH (Downlink Shared Channel) encoder in a transmitter for a mobile communication system including the DCH encoder for encoding k bits among 10 input TFCI (Transport Format Combination Indicator) bits and the DSCH encoder for encoding remaining (10−k) bits among the input TFCI bits. The method comprises generating, by the DCH encoder, a first coded bit stream by encoding the k input bits into 32 bits, and outputting a (3k+1)-bit stream by puncturing the first coded bit stream according to a specific mask pattern corresponding to the k value; and generating, by the DSCH encoder, a second coded bit stream by encoding the (10−k) input bits into 32 bits, and outputting a {3*(10−k)+1}-bit stream by puncturing the second coded bit stream according to a specific mask pattern corresponding to the (10−k) value.
摘要:
A method for supporting backward compatibility of Multimedia Broadcast and Multicast Service (hereinafter referred to as MBMS) in a mobile communication system of Wideband Code Division Multiple Access (hereinafter referred to as WCDMA) is disclosed. An example method recites mapping relationship between the MBMS service identifier and the RAB identifier and judging the capability of the RNC by the SGSN, and accordingly, determining if the MBMS service is backwards compatible and if user equipment is compatible with different versions.
摘要:
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.
摘要:
Disclosed is a method for resuming header decompression by receiving multimedia broadcast/multicast service (MBMS) packet data having compressed headers in a mobile communication system providing the MBMS. The method includes the steps of detecting a moving of user equipment (UE) receiving the MBMS into a new cell from an old cell, copying and storing old header decompression context information used in the old cell, initializing a dynamic part to decompress headers of packet data for the MBMS and waiting for an IR-DYN packet until the IR-DYN packet has been received in the UE, in order to update the old header decompression information, creating a new header decompression context through updating the old header decompression information by using the IR-DYN packet when the IR-DYN packet has been received in the UE, and decompressing the headers of the packet data for the MBMS transmitted from the new cell by using the new header decompression context.
摘要:
An apparatus and method determines soft handover in a Code Division Multiple Access (CDMA) mobile communication system supporting a Multimedia Broadcast Multicast Service (MBMS) service. In the CDMA mobile communication system supporting an MBMS service, when a User Equipment (UE) moves to a region where it can receive data from a plurality of Node Bs, the UE determines by itself whether to perform soft combining on MBMS data received from the Node Bs. Therefore, even though an MBMS user moves from an existing cell to a new cell, the MBMS service is stably provided, contributing to the convenience of the user.
摘要:
An encoding method and apparatus for a DCH (Dedicated Channel) encoder and a DSCH (Downlink Shared Channel) encoder in a transmitter for a mobile communication system including the DCH encoder for encoding k bits among 10 input TFCI (Transport Format Combination Indicator) bits and the DSCH encoder for encoding remaining (10−k) bits among the input TFCI bits. The method comprises generating, by the DCH encoder, a first coded bit stream by encoding the k input bits into 32 bits, and outputting a (3 k+1)-bit stream by puncturing the first coded bit stream according to a specific mask pattern corresponding to the k value; and generating, by the DSCH encoder, a second coded bit stream by encoding the (10−k) input bits into 32 bits, and outputting a {3*(10−k)+1}-bit stream by puncturing the second coded bit stream according to a specific mask pattern corresponding to the (10−k) value.
摘要:
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.
摘要:
Disclosed is an uplink random access procedure in an NB-TDD (Narrow Band Time Division Duplexing) system. To achieve an acknowledgement for data transmission from a UTRAN (UMTS Terrestrial Radio Access Network), a UE selects one of a plurality of sync codes by which the UTRAN identifies UEs that request data transmission and transmits the selected sync code in a time slot of a sub-frame to the UTRAN. Then, the UE receives the sync code information, information about the arrival time of the sync code, time update information indicating a variation in the transmission time of data, and power information indicating an adjustment to a power gain in the UE from the UTRAN on an FPACH (Fast Physical Access Channel). The UE transmits the data on a P-RACH (Physical Random Access Channel) mapped from the FPACH according to the time update information and the power information.
摘要:
A method for resetting a MAC-hs (Medium Access Control-high speed) layer entity in a communication system using HSDPA (High Speed Downlink Packet Access). When an RLC (Radio Link Control) layer entity is reset due to occurrence a protocol error, the system resets both a MAC-hs layer entity of the RLC layer entity and its counterpart RLC, thus preventing unnecessary data transmission.
摘要:
A method for initiating uplink signaling proactively by the MBMS UE, comprising steps of: the UE moving to a new cell; listening to information on a MCCH; initiating an uplink signaling according to information on the MCCH; sending a response message to the UE by a RNC, or if no UE moving to the new cell,initiating the uplink signaling proactively by the UE if the information received from the MCCH includes an indication for UE counting; and sending a response message to the UE by the RNC. The UE in URA_PCH mode and IDLE mode can response to the MBMS Notification message sent by the RNC, and can initiate the Cell Update process or the RRC Connection process in order to obtain the MBMS parameters. The RNC sets different contents for the response message according to different reasons of message initiation.