Data transmission method, relay node, convergence server and system

Abstract

The invention discloses a data transmission method, a relay node, a convergence server and a system, wherein the method comprises the steps of: 1) establishing a plurality of tunnel connections between the relay node and the convergence server through a plurality of wireless access network elements; 2) conducting logical link control packaging on uplink IP groups uploaded by a mobile terminal through the relay node to form an uplink logical link control message; and 3) sending the uplink logical link control message to the convergence server by the relay node. The data transmission method, the relay node, the convergence server and the system has good compatibility and good extensibility, the RN (relay node) supports a plurality of LTE (Long Term Evolution) wireless access network elements, only a link application layer is corrected, only the convergence server is added, and an air interface protocol is not required to be corrected.

Description

technical field [0001] The present invention relates to wireless communication technology in the field of communication, in particular, to a data transmission method, a relay node, a convergence server and a system. Background technique [0002] In high-speed mobile environments such as high-speed railways and highways, providing high-quality and high-speed LTE (Long Term Evolution, Long Term Evolution) communication services and other 2G and 3G communication services for users in vehicles must solve vehicle body penetration The impact of loss. In order to overcome the penetration loss of the car body, the existing technical solution is to introduce Backhaul UE (relay link user equipment) on the top of the high-speed train or high-speed car as the RN (Relay Node, relay node) device of the Mobile Relay. The LTE TYPE I Relay technical solution provides IP-based backhaul services for various types of base stations inside the car body. [0003] The Mobile Relay system architec...

AI Technical Summary

Problems solved by technology

[0008] (1) Only the link between a Backhaul UE and an eNB (evolved Node B, evolved base station) is supported as a backhaul link, and the capacity of the backhaul link is limited, even if it is expanded through CA (Carrier aggregation) The capacity of the backhaul link has many problems to be solved, and the equipment cost is relatively high;

[0009] (2) Under the condition of high-speed mobility, the probability of Backhaul UE handover failure is greatly increased, and once the Backhaul UE handover fails, enter the RRC (Radio Resource Control, radio resource control protocol) reconstruction or NAS (Non-Access Stratum Signaling) recovery process , will cause IP packet loss and affect the signal transmission quality of the base station

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