Embodiments of the present invention provide a data transmission method, a base station and a user equipment. One transmission method includes: sending, by a base station, first data and random access information to a user equipment UE simultaneously; and acquiring, by the base station, receiving state information of the first data fed back by the UE through the random access information. Another transmission method includes: receiving, by a user equipment, UE, first data and random access information sent by a base station simultaneously; and feeding back, by the UE, receiving state information of the first data to the base station through the random access information. In the technical solutions of the present invention, a base station transmits data to a UE during a random access process, thereby reducing signaling interaction and time delay and improving the data transmission efficiency.

Data transmission method, base station and user equipment

A method in a mobile device for use in a cellular network comprises commencing a radio resource control (RRC) connection reestablishment procedure. This procedure comprises performing a cell selection operation wherein one or more target cells which the mobile device may select for re-establishment are specified in handover information previously received at the mobile device. A corresponding method in a network component is provided.

Devices and methods for cellular communication

Embodiments of the present invention provide a data transmission method, a base station, and a user equipment. The method includes: generating, by a first base station, downlink radio link control RLC protocol data units PDUs; and sending, by the first base station, a first part of downlink RLC PDUs in the downlink RLC PDUs to a user equipment UE, and sending a second part of downlink RLC PDUs in the downlink RLC PDUs to a second base station, so that the second base station sends the second part of downlink RLC PDUs to the UE. In the embodiments of the present invention, the first base station sends the first part of downlink RLC PDUs in the downlink RLC PDUs to the UE, and sends the second part of downlink RLC PDUs in the downlink RLC PDUs to the second base station, and the second base station sends the second part of downlink RLC PDUs to the UE, so that the first base station and the second base station are capable of jointly sending data to the UE, thereby improving a peak rate and a throughput of the UE.

Method, base station and user equipment for transmitting data

The invention provides an LTE-A relay system and a collaboration switching method of the LTE-A relay system based on an auxiliary carrier. Services are provided for a user by a base station and the user at the same time through a direct-connection low frequency link of the base station-the user and a high-frequency link among the base station-a relay station-the user. The switching method comprises the steps that when the high-frequency link is required to be switched, a source side base station firstly detects the low-frequency direct-connection chink directly connected with the user, and therefore when the high-frequency link is switched, the services can be continuously provided for the user. According to the method, the requirement of the user for a large broadband is met, meanwhile, the outage probability of switching is reduced, and the quality of the user services is improved.

LTE-A relay system and collaboration switching method of LTE-A relay system based on auxiliary carrier

A method for implementing soft handover based on a carrier aggregation technology, a base station, and a terminal. The method is applied in a scenario of complementary carrier coverage, and comprises: a terminal and a base station receiving and transmitting data simultaneously through multiple cells corresponding to multiple component carriers in a carrier aggregation manner, wherein one cell is a primary cell and the rest cells are secondary cells; the base station determining, according to a measurement result of the terminal, to hand over the primary cell of the terminal to one of the secondary cells, and marking the secondary cell as a target secondary cell; and the base station maintaining a service connection between the terminal and the target secondary cell, and notifying the terminal of handing over a control signaling connection to the target secondary cell.

Method for implementing soft handover based on carrier aggregation technology, base station, and terminal

On the progress of researching for key technology and standard of LTE-Advanced, enhanced mobility control and Carrier Aggregation (CA) are kept to be researching points Injection of CA brings new challenge to handover procedure for one thing, for another it could be used to support handover mechanism to overcome outage probability of user plane from handover of R10 In this paper we propose a handover scheme under CA mode called Combined Handover Scheme, which makes use of data supporting from Secondary Cell (SCell) during handover execution to overcome outage probability of handover in R10 We make supplement to handover procedure of R10 in order to accommodate the proposed scheme

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Yang Lee

Papers

A combined handover scheme for LTE-advanced system