Method, apparatus, and system for establishing signaling connection in communication network

A radio access network device, comprising:

• a receiver, configured to receive, from a second radio access network device, a first signaling connection parameter allocated by a core network node for a signaling connection between the second radio access network device and the core network node;
• a processor, configured to allocate a second signaling connection parameter for a signaling connection between the radio access network device and the core network node;
• and
• a transmitter, configured to transmit the first and second signaling connection parameters to the core network node;
• wherein the first signaling connection parameter is a core network node communication context identifier, and the second signaling connection parameter is a radio access network device communication context identifier.

A method, applied in a communication network, comprising:

• receiving, by a core network node, from a first radio access network device a message comprising a first signaling connection parameter and a second signal connection parameter, wherein the first signaling parameter is allocated by the core network node for a signaling connection between the second radio access network device and the core network node, and the second signaling connection parameter is allocated by the first radio access network device for a signaling connection between the first radio access network device and the core network node;
• and
• storing, by the core network node, the second signaling connection parameter;
• wherein the first signaling connection parameter is a core network node communication context identifier, and the second signaling connection parameter is a radio access network device communication context identifier.

A core network node, comprising:

• a receiver, configured to receive from a first radio access network device a message comprising a first signaling connection parameter and a second signal connection parameter, wherein the first signaling parameter is allocated by the core network node for a signaling connection between the second radio access network device and the core network node, and the second signaling connection parameter is allocated by the first radio access network device for a signaling connection between the first radio access network device and the core network node;
• and
• a memory configured to store the second signaling connection parameter;
• wherein the first signaling connection parameter is a core network node communication context identifier, and the second signaling connection parameter is a radio access network device communication context identifier.