Data transmission method, device and system

Abstract

Embodiments of the present invention provide a data transmission method, device, and system. A method includes: the terminal device judges whether the uplink data to be sent is smaller than a preset data volume threshold; if it is smaller, establishes an RRC connection with the base station, and sends the uplink data to the base station in an RRC connection completion message, so that the base station sends the uplink data to the base station. The signaling message between the MME and the MME is sent to the MME, and then the MME sends the uplink data to the corresponding application server through the signaling message between the P-CSCF and the P-CSCF. The technical scheme of the invention transmits small data through signaling messages, which solves the problem of network resources.

Description

technical field [0001] The present invention relates to communication technology, in particular to a data transmission method, device and system. Background technique [0002] Machine Type Communication (MTC for short) refers to the network communication between one or more network elements or devices without human participation. It can also be called Machine to Machine (Machine to Machine, short for for M2M) communication. MTC and some other communications similar to MTC have the characteristics of small interactive traffic and interactive bursts. Therefore, the data transmission in MTC and other communications similar to MTC is often called small data transmission (SmallData Transmissions in English) or low data transmission. Traffic (Low Data Usage in English) transmission. Correspondingly, compared with Human to Human (H2H) terminals, MTC terminals and terminals similar to MTC terminals are often called small data transmission terminals or low data traffic terminal. ...

AI Technical Summary

Problems solved by technology

In order to ensure small data transmission, existing solutions require network elements in the mobile communication network, such as Packet Data Network Gateway (PGW for short), to assign Internet Protocol (Internet Protocol, IP for short) to each small data transmission terminal. ) address, create a radio access bearer (Radio Access Bear, RAB for short) corresponding to data transmission, and reserve the resources required for data transmission, which will cause a waste of resources in the mobile communication network

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