Abstract: The present disclosure provides a method, an apparatus and a system for informing a serving cell handover, which relate to radio communication technology, and can greatly reduce delay of the handover of the HS-DSCH serving cell, decrease the drop call rate, and enhance user's experience. The method for informing a serving cell handover includes: a radio network controller (RNC) sets up a radio link with a candidate cell, and sets configuration for the candidate cell during the process of setting up the radio link; the RNC sends configuration information of the candidate cell to user equipment (UE); and after acquiring an optimum cell, the RNC informs, through an Iub interface signaling message, a target base station of sending a serving cell handover instruction to the UE. The serving cell handover instruction instructs the UE to hand over to the optimum cell according to the configuration information. The present disclosure is suitable for occasions where the serving cell hands over in the radio network.

Abstract: Embodiments of the present invention disclose a transmission method, apparatus, and system for uplink transmit diversity, which relate to the field of communications. To determine activation or deactivation of uplink transmit diversity in time and effectively to improve uplink transmission quality, the technical solution provided in the present invention is as follows: determining, by a base station, to activate/deactivate uplink transmit diversity of a user equipment and sending an activation/deactivate request indication to a radio network controller, the activation/deactivate request indication is used for the radio network controller to instruct the user equipment to activate/deactivate the uplink transmit diversity. The present invention is applicable to the control of uplink transmit diversity transmission.

Abstract: A transmission method, apparatus, and system based on uplink transmit diversity, relating to the field of communications are provided.

Abstract: Embodiments of the present invention provide a method for uplink access and a terminal device. The method includes: obtaining load information of multiple cells, where the load information is interference level values of the multiple cells or comparison relationship values of the interference level values; and determining, according to the load information of the multiple cells, an uplink access carrier to be used for uplink access. According to the embodiments of the present invention, when a terminal device initiates uplink access actively, the terminal device can select a proper uplink access carrier according to load information such as the interference level values of cells or comparison relationship values of the interference level values.

Abstract: The present invention discloses a method and a user equipment for processing frequency information. The method for processing frequency information includes: receiving a measurement control message sent from network device, where the measurement control message contains frequency information for inter-frequency measurement without compressed mode; and clearing stored frequency information for inter-frequency measurement without compressed mode if the type of frequency information for inter-frequency measurement without compressed mode that is contained in the measurement control message is different from the type of the stored frequency information for inter-frequency measurement without compressed mode. The technical solutions disclosed in the present invention avoid a problem of measurement failure when a UE performs measurement without compressed mode on an adjacent frequency.

Abstract: A method for indicating discontinuous data scheduling includes receiving discontinuous reception (DRX) indication information on an Iur interface; and sending discontinuous scheduling indication information to a base station according to the DRX indication information. A communication system and a radio network control device for implementing the method are also provided.

Abstract: A method for indicating discontinuous data scheduling includes receiving discontinuous reception (DRX) indication information on an Iur interface; and sending discontinuous scheduling indication information to a base station according to the DRX indication information. A communication system and a radio network control device for implementing the method are also provided.

Abstract: The present invention provides a method for transmitting keepalive information, a terminal, and a network device. The method includes: transmitting, by a terminal, first information to a network device, where the first information is used to instruct the network device to determine keepalive information to be received; the terminal transmits keepalive information to the network device, where the network device is configured to optimize the keepalive information. With the present invention, signaling loads are reduced.

Abstract: A method and an apparatus for random access are provided. The method includes: receiving, by a User Equipment (UE), an access indication message including a UE identifier (ID) and a corresponding resource number (101); sending a Dedicated Physical Control Channel (DPCCH) preamble by using an uplink resource corresponding to the resource number and preset initial transmit power (102); and if it is determined that an acquisition indication is received, determining, by the UE, that an access succeeds (103). Therefore, the reliability of information transmission is ensured, the delay in an access process is reduced, and fast implementation of uplink search is ensured.

Abstract: Embodiments of the present invention provide a data retransmission method and user equipment, where the method includes: if a network indicates switching from a dual stream transmission mode to a single stream transmission mode, stopping data transmission of one data stream and clearing data in an HARQ process of the stopped data stream; or if a network indicates switching from a single stream transmission mode to a dual stream transmission mode, transmitting retransmission data in an HARQ process of the original data stream without changing the HARQ process number, and transmitting new data in the HARQ process of a new data stream; or using the retransmission data of the original data stream as new data to transmit in the HARQ process of either the original data stream or new data stream.

Abstract: A switching method and device are disclosed by the present invention. The switching method according to the embodiments of the present invention includes: receiving from a base station a switching indication information that requires a UE to switch a TTI; sending to the base station a switching confirmation information with which the switching indication information is confirmed; and switching the TTI. The switching method according to the embodiments of the present invention includes: sending to a UE a switching indication information that requires the UE to switch a TTI; and receiving from the UE a switching confirmation information with which the switching indication information is confirmed. By using the switching method and device according to the embodiments of the present invention, the delay of switching the TTI can be shortened and the TTI can be switched quickly.

Abstract: The present disclosure provides a method, an apparatus and a system for informing a serving cell handover, which relate to radio communication technology, and can greatly reduce delay of the handover of the HS-DSCH serving cell, decrease the drop call rate, and enhance user's experience. The method for informing a serving cell handover includes: a radio network controller (RNC) sets up a radio link with a candidate cell, and sets configuration for the candidate cell during the process of setting up the radio link; the RNC sends configuration information of the candidate cell to user equipment (UE); and after acquiring an optimum cell, the RNC informs, through an Iub interface signaling message, a target base station of sending a serving cell handover instruction to the UE. The serving cell handover instruction instructs the UE to hand over to the optimum cell according to the configuration information. The present disclosure is suitable for occasions where the serving cell hands over in the radio network.

Abstract: A method apparatus and system for cell handover are provided. The method includes the following steps. User equipment (UE) initiates a cell handover. If the UE is not in a downlink discontinuous reception state, the cell handover is performed when the UE is not in the downlink discontinuous reception state. If the UE is in a downlink discontinuous reception state, the UE exits the downlink discontinuous reception state and performs the cell handover when the UE is not in the downlink discontinuous reception state. The embodiments of the present invention prevent the problem that the UE cannot receive a handover indication command during the cell handover in time because the UE is in the downlink discontinuous reception state, thus reducing time delay of the cell handover, avoiding longer service interruption, and reducing the call drop rate.

Abstract: A method for indicating discontinuous data scheduling includes receiving discontinuous reception (DRX) indication information on an Iur interface; and sending discontinuous scheduling indication information to a base station according to the DRX indication information. A communication system and a radio network control device for implementing the method are also provided.