Abstract:
A method includes: performing, by a terminal device, data transmission based on a configuration parameter of a currently activated first bandwidth part BWP, where the configuration parameter of the first BWP includes at least one of a first resource offset, a first bandwidth, and a first subcarrier spacing; determining, by the terminal device, a first random access resource and a second configuration parameter for random access, where the second configuration parameter includes at least one of a second resource offset, a second bandwidth, and a second subcarrier spacing; sending, by the terminal device, a random access request to the network device on the first random access resource; and receiving, by the terminal device, a random access response based on the second configuration parameter, where the random access response is sent by the network device based on the random access request.
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:
The present disclosure provides a processing method and device for obtaining synchronization, where the method includes: selecting, by a UE, a preamble on a first Scell, and reporting information of the preamble to a base station by using a current PCell or a second SCell of the UE; receiving scheduling information of a random access response message or scheduling information of a conflict indication message delivered by the base station from a physical downlink control channel of the PCell, the second SCell or the first SCell by using a C-RNTI of the UE; and receiving the random access response message or the conflict indication message from a physical downlink shared channel according to the scheduling information of the random access response message or the scheduling information of the conflict indication message.
Abstract:
Embodiments of the present invention disclose a resource scheduling method, device, and communications system. The method includes: sending, by a first base station, a first data offloading proportion to a user equipment; receiving, by the first base station, a first buffer status report that is generated based on the first data offloading proportion and sent by the user equipment, where a buffered data volume included in the first buffer status report needs to be transmitted by the first base station; sending, by the first base station, uplink resource scheduling information to the user equipment based on the first buffer status report, where an uplink transmission resource indicated by the uplink resource scheduling information is used to transmit uplink data of the user equipment that should be borne by the first base station. The embodiments of the present invention are applied to resource scheduling.
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 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:
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:
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:
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:
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.