Data forwarding method, base station and relay station

Abstract

The invention discloses a data forwarding method, a base station and a relay station. The data forwarding method comprises the following steps of: receiving a switch command message sent by a mobility management entity, wherein a user device identification is carried in the switch command message; establishing a forwarding data channel corresponding to the user device identification; sending a connection re-distribution message to the relay station, wherein a channel identification corresponding to the forwarding data channel is carried in the connection re-distribution message so that the relay station is beneficial to sending a data packet of a user device through the forwarding data channel corresponding to the channel identification; receiving the data packet sent by the relay stationand sending the data packet to the target base station. The data forwarding method provided by the embodiment of the invention can be used in a relay scene so as to realize lossless switch of the user device from the relay station to the target base station, thereby improving the service quality of a communication system in the relay scene.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a data forwarding method, a base station and a relay station. Background technique [0002] In the Long Term Evolving (LTE, Long Term Evolving) system, when the signal quality of the cell where the user equipment (UE, User Equipment) currently resides decreases, or the signal quality of an adjacent cell becomes better, the user equipment will be handed over, that is, the user equipment The device is handed over from the cell where the source base station is located to the cell where the target base station is located. If the user equipment is performing data services before the handover, it is necessary to ensure that the data packets of the user equipment are not lost during the handover process, that is, the data packets buffered in the source base station and the user equipment has not yet been confirmed to be received by the source base station must be forwarded ...

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Problems solved by technology

[0004] In the process of researching the prior art, the inventor found that in the relay scenario, a wireless interface is used between the relay station and the source base station providing services for the relay station, and there is no wired channel for transferring data packets that need to be forwarded between the relay station and the source base station , the relay station cannot send the data packet that needs to be forwarded to the target base station, resulting in the loss of the data packet of the user equipment, thereby reducing the service quality of the communication system

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