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.
Abstract:
A random access method, an evolved Node B (eNB), and a terminal equipment are provided. The method includes: determining target component carriers to which a User Equipment (UE) is to be handed over, and notifying the UE of information about the target component carriers through a source eNB; and after receiving a dedicated random access preamble sent by the UE, sending a random access response message on at least one component carrier in the target component carriers. The terminal equipment includes: a handover command receiving unit, a sending unit, and a random response receiving unit. Therefore, in a random access procedure of cell handover, the eNB is capable of determining downlink component carriers that a UE monitors, thereby increasing utilization rate of downlink resources.
Abstract:
The present invention provides a method for updating a system message, where an eNB performs a communication resource negotiation with a neighboring eNB to obtain an available subframe, sends a paging message including a system message update indication to a UE, wherein the system message update indication indicates that the system message is updated, and sends a system message update indication message to the UE in the available subframe, wherein the system message update indication message is used to update the system message. The present invention further provides a communication system and an eNB. By using the method for updating a system message, the communication system, and the eNB according to the present invention, a message is transmitted in a low-interference available subframe, thereby reducing adverse effects caused by interference and improving accuracy of system message update.
Abstract:
A method and an apparatus for controlling a timer are disclosed. In the method, after user equipment activates a first bandwidth part in response to a first message, the user equipment controls a target timer to perform timing based on a unit time length of a second bandwidth part to optimize the timer in a BWP scenario.
Abstract:
A communication method and apparatus includes: A communication device determines at least one first packet in first duration. The at least one first packet belongs to a same PDU set, the first duration is determined based on a first interval or burst duration, the first interval is a time interval at which the communication device obtains two adjacent PDU sets in time domain, and the burst duration is duration of one PDU set. Then, the communication device sends the at least one first packet.
Abstract:
This application discloses a HARQ process control method and an apparatus, and relates to the field of communications technologies. The method includes: A first terminal apparatus determines that a TB transmitted in a first HARQ process is a first TB transmitted for the last time or a newly transmitted TB; and stops a first timer. Further, the first terminal apparatus sends, to a second terminal apparatus, first indication information used to indicate that the TB transmitted in the first HARQ process is a newly transmitted TB. The second terminal apparatus receives the first indication information, and stops a second timer based on the first indication information.
Abstract:
This application discloses a TSN time synchronization method and apparatus. One example method includes: a first apparatus receives a first TSN time synchronization message from a second apparatus; the first apparatus determines that the first TSN time synchronization message does not carry a first time, where the first time is a system time of a wireless communication system when the second apparatus receives the first TSN time synchronization message; and the first apparatus locally obtains a bridge residence time, write the bridge residence time into the first TSN time synchronization message, and send the first TSN time synchronization message.
Abstract:
Embodiments of the present invention provide a data transmission method and an apparatus, and relate to the field of communications technologies. The method includes: obtaining, by a terminal, first indication information of an uplink resource used for sending uplink data or uplink control information. The first indication information of the uplink resource includes information used to indicate whether the uplink resource is a type 1 uplink resource or a type 2 uplink resource. The type 1 uplink resource includes at least one subcarrier in a frequency domain, where when a subcarrier quantity is greater than or equal to 2, subcarriers are orthogonal to each other, and a subcarrier spacing is 3.75 kHz; or the type 1 uplink resource includes at least one sub-channel in a frequency domain, where a bandwidth of each sub-channel is 3.75 kHz.
Abstract:
This application provides example bandwidth part (BWP) adjustment methods and apparatuses. One example method includes receiving, in a first BWP, first indication information sent by a network side device, where the first indication information indicates information about a second BWP to be used by a terminal device to receive or send data. The terminal device can then receive or send the data in the second BWP.