Multi-mobile relay cooperative handover method and device

Abstract

The invention aims to provide a multi-mobile relay cooperative handover method and a device. A measurement report of the quality of a signal channel of a return link of a to-be-switched mobile relay which is sent by an auxiliary mobile relay is received by a source base station; a decision of handover for the to-be-switched mobile relay is made by the source base station according to the measurement report; the source base station acquires handover configuration information for the to-be-switched mobile relay from a target base station to which the mobile relay is switched; and the source base station sends the handover configuration information to the to-be-switched mobile relay through the auxiliary mobile relay, so that the to-be-switched mobile relay can perform RRC (radio resource control) reconfiguration and can be communicated with the target base station, wherein the signal channel quality of the return link corresponding to the auxiliary mobile relay is higher than that of the return link corresponding to the to-be-switched mobile relay. Compared with the prior art, the method and the device have the advantage that cooperative handover is realized through a plurality of mobile relays, so that the failure rate of the handover is reduced.

Description

technical field [0001] The present invention relates to the field of mobile communication technology, in particular to a technology for multiple mobile relays to coordinate handover. Background technique [0002] At present, the whole world is vigorously developing high-speed public transport. For example, Germany, France and Japan all have their own national high-speed railways. China's high-speed railway will reach 20,000km in 2020, and the speed of the train can exceed 350km / h. With the rapid development of high-speed railways, more and more people choose to take high-speed trains, whether for business travel or leisure travel. During the train journey, passengers communicate with the outside world through various mobile wireless communication methods. [0003] In order to provide high-quality seamless transmission services in a high-speed mobile environment, a mobile relay can be installed on a high-speed train, and provide wireless backhaul through an external antenn...

AI Technical Summary

Problems solved by technology

However, in high-speed mobile scenarios, the channel quality of the backhaul link degrades rapidly due to the speed of the train

The delay in the handover process may cause some problems. If the channel quality of the backhaul link drops to the level where the handover-related information cannot be sent, the handover will fail and the handover success rate will be greatly reduced.

Images