CS to IMS hand-back and hand-in for IMS systems for legacy CS UE with home node B access

A method for performing wireless communications, the method comprising:nestablishing an IP multimedia system (IMS) bearer channel from a remote end to a home node B (HNB);establishing a first circuit switch (CS) bearer path extending from a user equipment (UE) through the HNB to a media gateway (MGW), wherein the first CS bearer path transports a CS bearer channel;establishing a second CS bearer path extending from the MGW through a base station system (BSS) to the UE; andhanding the CS bearer channel over from the HNB to the BSS by switching the CS bearer channel from the first CS bearer path to the second CS bearer path.

A method for performing wireless communications, the method comprising:nestablishing a bearer channel between a remote end and a Multimedia Resource Function (MRF);establishing a first bi-cast IP multimedia system (IMS) bearer channel between the MRF and a home node B (HNB);establishing a second bi-cast IMS bearer channel between the MRF and a media gateway (MGW);establishing a first circuit switch (CS) bearer path from a user equipment (UE) through a CS core network to the MGW, wherein the first CS bearer path transports a CS bearer channel;establishing a second CS bearer path from a user equipment (UE) to the HNB, wherein the second CS bearer path does not extend through the CS core network; andhanding the CS bearer channel over from the CS core network to the HNB by switching the CS bearer channel from the first CS bearer path to the second CS bearer path; andreleasing the second bi-cast IMS bearer channel after the handing over.

A method for performing wireless communications, the method comprising:nestablishing communications between a user equipment (UE) and a remote end, the communications passing through a media gateway (MGW);after the communications are established, establishing an IP multimedia system (IMS) bearer channel from the remote end to a home node B (HNB);establishing a first circuit switch (CS) bearer path from the MGW through a base station system (BSS) to the UE, wherein the first CS bearer path transports a CS bearer channel;establishing a second CS bearer path from the UE to the HNB, wherein the second CS bearer path does not extend through the BSS;handing the CS bearer channel over from the BSS to the HNB by switching the CS bearer channel from the first CS bearer path to the second CS bearer path; andreleasing the MGW after handing the CS bearer channel over from the BSS to the HNB.

A method for performing wireless communications, the method comprising:nestablishing an IP multimedia system (IMS) bearer channel from a remote end to a media gateway (MGW);establishing a first circuit switched (CS) bearer path extending from the MGW through a base station system (BSS) to a user equipment (UE), wherein the first CS bearer path transports a CS bearer channel;establishing a second circuit switched (CS) bearer path extending from the MGW to a home node B (HNB), wherein the second CS bearer path does not extend through the BSS; andhanding the UE over from the BSS to the the HNB by switching the CS bearer channel from the first CS bearer path to the second CS bearer path.