Abstract: An uplink transmission power control method and a user equipment are provided, where the method includes: determining, by a UE, whether uplink channels are simultaneously transmitted over adjacent subframes between multiple carriers; where the adjacent subframes between the multiple carriers are partially overlapped; and timing advance values of the multiple carriers are different; and if uplink channels are simultaneously transmitted over adjacent subframes between multiple carriers, processing, by the user equipment, an uplink channel transmitted over the last symbol on a partially overlapped subframe of another carrier except a carrier having the greatest timing advance value, so that total transmission power of the uplink channels is lower than the maximum transmission power or an interference level of the user equipment.

Abstract: An uplink synchronization processing method, a user equipment (UE), and a base station are provided. The method includes: receiving a component carrier (CC) uplink synchronization indication message sent by a base station, where the uplink synchronization indication message carries identification information of one or multiple newly configured CCs; sending synchronization signaling to the base station when knowing that the uplink synchronization needs to be executed on all or a part of the one or multiple newly configured CCs corresponding to the identification information; and receiving a time advanced (TA) adjusting message that is sent by the base station according to the synchronization signaling, and applying a TA value carried in the TA adjusting message to the CC on which the uplink synchronization needs to be executed.

Abstract: A method and a device for establishing an evolved packet system EPS bearer are disclosed. The method includes establishing, by a first base station to which UE belongs, a first EPS bearer based on a first CC for the UE, wherein the first EPS bearer is an EPS bearer between the first base station and the UE; and instructing, by the first base station, a second base station to establish a second EPS bearer based on a second CC for the UE, wherein the second EPS bearer is an EPS bearer between the second base station and the UE. The present invention enables the UE to aggregate carriers of different frequency ranges from the first base station to which the UE belongs and the second base station to which the UE belongs to transmit data, thus improving the throughput of the data transmitted by the UE.

Abstract: A method for ensuring parallel data random access and a user equipment are provided. An embodiment of the present invention includes controlling a random access sequence transmitted by a user equipment through a physical random access channel (PRACH) not to be sent with other uplink transmission in the same subframe, or, when a random access sequence transmitted by a user equipment through a PRACH is sent with other uplink transmission in the same subframe, controlling a priority of power transmission of the PRACH and a priority of power transmission of an uplink channel over which the other uplink transmission is performed, when power is limited.

Abstract: A method and a device for establishing an evolved packet system EPS bearer are disclosed. The method includes establishing, by a first base station to which UE belongs, a first EPS bearer based on a first CC for the UE, wherein the first EPS bearer is an EPS bearer between the first base station and the UE; and instructing, by the first base station, a second base station to establish a second EPS bearer based on a second CC for the UE, wherein the second EPS bearer is an EPS bearer between the second base station and the UE. The present invention enables the UE to aggregate carriers of different frequency ranges from the first base station to which the UE belongs and the second base station to which the UE belongs to transmit data, thus improving the throughput of the data transmitted by the UE.

Abstract: A method for ensuring parallel data random access and a user equipment are provided, which relate to the field of communications technologies. An embodiment of the present invention includes controlling a random access sequence transmitted by a user equipment through a physical random access channel PRACH not to be sent with other uplink transmission in the same subframe, or, when a random access sequence transmitted by a user equipment through a PRACH is sent with other uplink transmission in the same subframe, controlling a priority of power transmission of the PRACH and a priority of power transmission of an uplink channel over which the other uplink transmission is performed, when power is limited.

Abstract: A method, a system and an apparatus can be used for transmitting data in a CA manner. A first base station currently serving a user equipment (UE), creates EPS bearers under different component carriers CC Groups for the UE. The UE sets different access stratum entities corresponding to the CC Groups to process data in the process of creating the EPS bearers. The UE determines, when transmitting or receiving data, a corresponding CC Group according to an EPS bearer that bears the data. An access stratum entity corresponding to the CC Group processes the data that needs to be transmitted or received, a site is a first base station currently serving the UE or a second base station currently serving the UE.

Abstract: User equipment includes a receiving module configured to receive first indication information sent by a first base station. The first indication information includes a time period required by the user equipment to request to access a second base station. The user equipment includes a sending module to send the random access scrambling code to the second base station. The user equipment further includes a notification module to notify the first base station that a secondary cell group failure occurs if the user equipment fails to access the second base station within the time period.

Abstract: Embodiments of the present invention disclose a random access response receiving and sending method, a user equipment, a base station, and a system. The method includes: after sending a dedicated random access preamble to a network side, on a physical downlink control channel, according to a pre-obtained dedicated identifier, detecting control signaling masked by using the dedicated identifier, where the dedicated identifier is a user equipment-specific temporary identifier configured by the network side for the user equipment, and the control signaling includes information about a physical downlink shared channel used to send a random access response and information required for decoding the random access response; and receiving the random access response on a corresponding physical downlink shared channel according to the control signaling.

Abstract: A random access method and an evolved Node B (eNB) is described. The method includes: receiving, by a target evolved Node B (eNB), a handover request message including information of multiple target component carriers selected by the source eNB; determining, by the target eNB, whether to allow the multiple target component carriers selected by the source eNB; sending, by the target eNB, a handover request acknowledgement message including information about at least two determined target component carriers for the UE. If the multiple target component carriers selected by the source eNB are allowed by the target eNB, the at least two determined target component carriers include the multiple target component carriers selected by the source eNB. Otherwise, the at least two determined target component carriers include one or more newly configured target component carriers configured by the target eNB.

Abstract: Embodiments of the present invention disclose a method for performing communication by using an unlicensed spectrum, a device, and a system, which relate to the field of communications technologies, so as to improve efficiency of using an unlicensed spectrum by user equipment. The method includes: obtaining, by a base station eNB, a time resource and/or a frequency resource by contending with another eNB or another system using an unlicensed spectrum; generating, by the base station eNB, information about the time resource and/or the frequency resource according to the time resource and/or the frequency resource; and sending, by the base station eNB, the information about the time resource and/or the frequency resource to user equipment UE by using a broadcast or multicast message, so that the user equipment UE communicates with the base station eNB according to the information about the time resource and/or the frequency resource.

Abstract: The present invention provides a security key change method and a user equipment (UE). The method performed by the UE includes: receiving a key change command message from a master eNodeB (MeNB), wherein the key change command message comprises an indication that a change of a security key between the UE and a secondary eNodeB (SeNB), and the UE is configured with a dual connectivity between the MeNB and the SeNB; updating a security key between the UE and the SeNB; performing random access to the SeNB; and sending a key change complete message to the MeNB.

Abstract: Disclosed are a data transmission method, apparatus and system in a heterogeneous network. The data transmission method in a heterogeneous network comprises: a macro base station carrying control information in a subframe, transmitting the control information to a terminal in a control-frequency band, and informing a low power node of the control information; according to the control information, the low power node carrying data information in a subframe and transmitting the data information to a terminal by a data-frequency band; the control-frequency band and the data-frequency band are statically deployed, and the control-frequency band and the data-frequency band are non-overlapped.

Abstract: In the field of communications technologies, a message handling method and a wireless communication network are provided. The wireless communication network includes a serving evolved NodeB (eNB), a neighbor eNB, and a Relay Node (RN). The serving eNB is coupled with the neighbor eNB through an S1 interface or the X2 interface, and the RN is coupled with the serving eNB and served by the serving eNB. The serving eNB is configured to generate a notification and send the notification to the RN, wherein the notification carries information in which a neighbor cell of a neighbor eNB is marked as a serving cell of the serving eNB. The RN is configured to receive the notification and determine that the X2 interface between the serving eNB and the neighbor eNB is available based on the information carried in the notification.

Abstract: Embodiments of the present disclosure disclose a key processing method in dual connectivity mode and a device, which ensure communication security of UE in dual connectivity mode. The method according to the embodiments of the present disclosure includes: of a first base station and a second base station that have a communication connection to a terminal each, receiving, by the second base station, first request information sent by the first base station, where the first request information is used to request the second base station to generate a key used for communication with the terminal, and generating, by the second base station based on a security key carried in the first request information, the key used for communication with the terminal.

Abstract: In the field of communications technologies, a message handling method and a message handling device are provided. The method includes: a notification indicating whether an X2 interface to a neighbor node is available is received; using an S1 interface to send information when the X2 interface is unavailable; and/or receiving a notification indicating whether an S1 interface to a neighbor node is available, and using an X2 interface to send information when the S1 interface is unavailable. The technical solutions can ensure normal communication, and reduce possibility of communication failure.

Abstract: In the field of communications technologies, a method and a device for handling messages are provided. The method includes: a notification indicating whether an X2 interface to a neighbor node is available is received; using an S1 interface to send information when the X2 interface is unavailable; and receiving a notification indicating whether an S1 interface to a neighbor node is available, and using an X2 interface to send information when the S1 interface is unavailable. The solutions can ensure normal communication, and reduce possibility of communication failure.

Abstract: A handover method and a base station are provided. The handover method may include: when a UE needs to be handed over, obtaining bearer context information of the UE in a first base station; sending a handover request to a target base station, where the handover request carries the bearer context information; and after receiving a handover response that is returned by the target base station and indicates that the handover is agreed to, sending a handover command to the UE so that the UE is handed over to the target base station. Based on the above technical solutions, the UE handover can be implemented quickly in the case of using multiple carriers and the current service of the UE can be recovered quickly, which can improve communication experience of a user.

Abstract: The present application relates to the field of communications technologies, and embodiments of the present application disclose a method and an apparatus for configuring a secondary cell, and a host, where the method includes: receiving a secondary cell configuration message sent by a first base station, where the secondary cell configuration message includes a secondary cell index configured by the first base station for a secondary cell.

Abstract: Embodiments of the present invention disclose a method and an apparatus for determining an active time of UE, where the method includes: acquiring extension information of a DTX active time of a base station; and adjusting a DTX active time of the UE according to the extension information, and using an overlapped time between the DTX active time of the UE and a DRX active time of the UE as an active time of the UE for listening on a PDCCH channel. The UE can learn a latest DTX condition according to a change of the DTX on a base station side in a manner of acquiring extension information of a DTX active time of the base station, and therefore can determine a correct active time of the UE with reference to DRX of the UE, thereby ultimately ensuring QoS of the UE.