Gateway data transmission method, device and system

A gateway data transmission method, the method comprising:

• transmitting, by a cellular access network, to a dual mode gateway a message that requests to establish a wireless interface bearer between the cellular access network and the dual mode gateway, upon reception of a message that requests to establish a bearer between a cellular core network and the cellular access network from the cellular core network;
• and
• transmitting, by the cellular access network, to the cellular core network a message that responds to establishing a bearer between the cellular core network and the cellular access network, upon reception of a message that responds to establishing a wireless interface bearer between the cellular access network and a dual mode gateway from the dual mode gateway, wherein the message that responds to establishing a bearer between the cellular core network and the cellular access network comprises a delay transmission message when the dual mode gateway is congested at that time.

A dual mode gateway, comprising:

• a determining module configured to determine whether a dual mode gateway is congested when service data from a cellular network side needs to be transmitted to a capillary vessel network device via the dual mode gateway;
• and
• a delay indicating module configured to transmit a delay transmission message to a data transmission main body at the cellular network side if the dual mode gateway is congested at that time, wherein the delay transmission message comprises a reaccess time evaluated for the service data by the dual mode gateway, so that the data transmission main body at the cellular network side delays the transmission of the service data.

A cellular access network, comprising:

• a bearer establishment transmitting module configured to transmit to a dual mode gateway a message that requests to establish a wireless interface bearer between the cellular access network and the dual mode gateway, upon reception of a message that requests to establish a bearer between a cellular core network and the cellular access network from the cellular core network;
• and
• a bearer response transmitting module configured to transmit to the cellular core network a message that responds to establishing a bearer between the cellular core network and the cellular access network, upon reception of a message that responds to establishing a wireless interface bearer between the cellular access network and the dual mode gateway from the dual mode gateway, wherein the message that responds to establishing a bearer between the cellular core network and the cellular access network comprises a delay transmission message if the dual mode gateway is congested at that time.