Data transmission method, long-term evolving system and device in switching

Abstract

The embodiment of the invention discloses a data transmission method during switching used in a LTE system comprising a mobile management entity MME / user plane entity UPE, a source development base station eNodeB and a terminal. The method comprises the following steps: when the LTE system is under switching, the source eNodeB notifies the MME / UPE to temporarily stop transmitting data packet to the source eNodeB after sending a switching command to the terminal; the MME / UPE, after receiving the pause notification, completes buffer storing of data packet failed to be transmitted to the source eNodeB; finally, when switching is completed, the data packet stored in the MME / UPE is transmitted to the terminal. Thus, the data transmission method reduces service delay and improves service quality during switching. In addition, the embodiment of the invention also discloses an LTE system and user plane equipment.

Description

technical field [0001] The invention relates to handover technology in the communication process, in particular to a data transmission method, long-term evolution (LTE) system and equipment in the handover process. Background technique [0002] The LTE system is an evolution system of 3G technology, with OFDM / FDMA as the core technology, its goals and requirements mainly include performance, deployment, evolution, radio resource management, complexity and other aspects. The handover of terminals is the most important part of the entire radio resource management. The quality of handover performance of the LTE system directly affects the performance of the entire network. The existence of handover not only affects the service quality of a single user, but also affects The performance of the entire network, such as system response speed and capacity. Therefore, the quality of the handover performance of the LTE network is of great significance not only to the performance of th...

AI Technical Summary

Problems solved by technology

According to the above method, since the cached data of the source eNodeB is transmitted to the target eNodeB, and the MME / UPE continuously transmits the user data to the cache of the source eNodeB during the handover process, in the case of a wireless link failure caused by a handover failure, the UE will be transferred from the IDLE After changing to the ACTIVE state, a large amount of data will be lost, which will affect the normal operation of the user's business

[0017] In short, the current data transmission method in the handover process of the LTE system has high performance requirements for the UE, source eNodeB, and target eNodeB. At the same time, it also increases data loss and service delay, thereby reducing the quality of service provided.

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