A message processing method and system

Abstract

A message processing method and system are provided. The method includes: when the radio resource control (RRC) protocol layer of a mobile terminal receives a connection release message, a non access stratum (NAS) protocol layer of a mobile terminal is notified that the connection has been released and changed from a connection status to a disconnection status; the RRC protocol layer starts a waiting timer; the RRC protocol layer sends the connection release message to a physical layer when the waiting timer expires. The method and system avoid the problem of a process failure of the NAS message while the RRC protocol layer is waiting for the connection release of a communication link.

Description

technical field [0001] The present invention relates to a long term evolution (LTE, Long Term Evolution) system in the field of mobile communication, and in particular to a message processing method and system. Background technique [0002] The LTE packet system consists of an Evolved Terrestrial Radio Access Network (EUTRAN, Evolved UMTST Terrestrial Radio Access Network) and a core network. In EUTRAN, the base station device is an evolved base station (eNB, evolved Node-B), which is mainly responsible for wireless communication, management of wireless communication and management of mobility context. In the LTE system, the radio resource control (RRC, Radio Resource Control) protocol is used for communication between the mobile terminal and the eNB. On top of the RRC protocol layer is the Non Access Stratum (NAS, Non Access Stratum) protocol. Internet protocol. [0003] According to whether there is a connection between the mobile terminal and the eNB, the RRC protocol l...

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Problems solved by technology

In the above process, there is a problem, because the RRC protocol layer does not notify the NAS protocol layer immediately after the connection is released, so the NAS protocol layer thinks that it is still in the connected state, so in the waiting process after the RRC protocol layer receives the connection release message , if the NAS protocol layer needs to initiate a new service, it will send a service request message to the RRC protocol layer, and the RRC protocol layer does not parse the NAS protocol layer message, so the RRC protocol layer will make the following for the received service request message sent by the NAS protocol layer Two kinds of processing: the first one, the RRC protocol layer forwards the service request message to the eNB, and the eNB may have released the connection at this time, so the service request message forwarding fails; the second one, the RRC protocol layer receives the NAS protocol layer After sending the service request message, cache the message, wait for the connection to be released and re-establish the connection between the mobile terminal and the eNB, and then send the message to the core network through the eNB. Although this message can be delivered to the core network, due to At this time, the connection between the core network and the NAS protocol layer has not been established, so the message waiting for the core network should be a connection establishment request message, so the core network cannot correctly process the service request message, which will cause the failure of the service request message processing

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