Data transmission method, communication system and related equipment

Abstract

The embodiment of the invention discloses a data transmission method, a communication system and related equipment which are used for guaranteeing the reliability of the pre-registration process. The data transmission method comprises that: a mobile management entity MME receives an uplink tunnel message transmitted by an evolution base station, wherein the uplink tunnel message comprises high-speed grouping data HRPD message generated by user equipment UE; and if the MME determines that virtual connection between the UE and a first evolution access network is started according to the uplink tunnel message, the HRPD message in the uplink tunnel message is forwarded to the first evolution access network, wherein the first evolution access network is an opposite-end evolution access networkin a current tunnel corresponding to the UE. The embodiment of the invention also provides a communication system and related equipment. The embodiment of the invention can effectively guarantee the reliability of the pre-registration process.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a data transmission method, a communications system and related equipment. Background technique [0002] With the development of network technology, user equipment often switches between different networks, for example, between a Long Term Evolution (LTE, Long Term Evolution) network and a High Rate Packet Data (HRPD, High Rate Packet Data) network. [0003] If the dual-mode user equipment of LTE / HRPD is a dual-mode user equipment of single transmission and dual reception. In this case, when the user equipment sends and receives data on one network, it is impossible to perform registration, authentication or session negotiation on another network at the same time. Therefore, when the user equipment switches across networks, it must first perform Registration, authentication, or session negotiation, etc. These processes usually take several seconds, causing interruptio...

AI Technical Summary

Problems solved by technology

[0013] However, in the above technical solution, if the UE performs pre-registration in the first eNB, the virtual connection has been opened. When the UE moves from the first eNB to the second eNB, the HRPD session of the UE is still saved in the first eNB corresponding to the first eNB. In one eAN, so when the MME sends the HRPD message to the second eAN, the HRPD session is not saved in the second eAN, and the HRPD session cannot be created and maintained with the UE, so the session negotiation will fail, resulting in pre-registration process failed

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