Patent ID: 8594011

Claim:
A method for establishing a connection between evolved Node Bs (eNBs), the method comprising: after finding a new neighboring cell of a first network node and determining an X2 interface not being established between the first network node and the neighboring cell belongs to a second network, receiving, at a third network node, a first request message from a Mobility Management Entity (MME); transmitting, at the third network node, a first response message to the MME; receiving, at the third network node, a second request message from the first network node; transmitting, at the third network node, a second request message to the second network node; receiving, at the third network node, a second response message from the second network node; and transmitting, at the third network node, the second response message to the first network node; wherein the first network node comprises at least one of a Relay eNB, a Home eNB (HeNB), or an eNB, wherein the second network node comprises a HeNB, wherein the third network node comprises a Gateway (GW) connected with the HeNB, wherein the first request message comprises an MME configuration transmission message including at least of the eNB ID of the HeNB, a Public Land Mobile Network ID (PLMN ID) of the HeNB, and a Tacking Area Code (TAC), wherein the first response message comprises an eNB configuration transmission message including the transmission layer address of the third network node, wherein the second request message comprises an X2 establishment request message according to the transmission layer address of the third network node, and wherein the second response message comprises an X2 establishment response message including the cell ID of the HeNB or the eNB ID of the HeNB.