Method, apparatus, and system for establishing device-to-device connection

A method for establishing a device-to-device, D2D, connection, wherein the method comprises:

• receiving, by an evolved Node Base, eNB, a Bearer Setup Request or Bearer Modify Request message sent by a mobility management entity, MME, triggered by a D2D server, wherein the Bearer Setup Request or Bearer Modify Request message comprises an identity of a first device and an identity of a second device, the bearer setup or bearer modify message instructs the first device and the second device to bear a service flow between the first device and the second device by using the D2D communication link, and the first device and the second device are two devices in D2D communication;
• and
• binding, by the eNB, the first device and the second device according to the identity of the first device and the identity of the second device, and establishing the D2D communication link between the first device and the second device.

A method for establishing a device-to-device, D2D, connection, wherein the method comprises:

• sending, by a first device in D2D communication, registration information to a D2D server, so that the D2D server performs pre-matching for the first device according to the registration information to find a second device in D2D communication, and triggers an evolved Node Base eNB to establish a D2D communication link between the first device and the second device;
• and
• receiving, by the first device, a D2D bearer setup and configuration message sent by the eNB, performing D2D bearer configuration according to the D2D bearer setup and configuration message, and returning a response message to the eNB to acknowledge that the D2D communication link is successfully established.

An evolved Node Base eNB, where the base station comprises:

• a receiver, configured to receive a Bearer Setup Request or Bearer Modify Request message sent by a mobility management entity MME triggered by a device-to-device D2D server, wherein the Bearer Setup Request or Bearer Modify Request message comprises an identity of a first device and an identity of a second device, the Bearer Setup Request or Bearer Modify Request message instructs the first device and the second device to bear a service flow between the first device and the second device by using a D2D communication link, and the first device and the second device are two devices in D2D communication;
• and
• a processor, configured to bind the first device and the second device according to the identity of the first device and the identity of the second device, and establish the D2D communication link between the first device and the second device.

The base station according to claim 20, wherein the base station further comprises:

• a transmitter, configured to send a D2D communication link establishment success result, so that the D2D server separately returns an application layer communication indication to the first device and the second device.