Patent ID: 9723534
Date: 2017-08-01
CPC Classifications: H04W

Claim:
1. A method for a handover (HO) in an evolved Node B (eNodeB), the method comprising: receiving a measurement report from a user equipment (UE); transmitting, to a mobility management entity (MME), a handover required message including first information indicating whether the HO is for a circuit switched (CS) network or both a CS network and a packet switched (PS) network; receiving, from the MME, a handover command message; and initiating a PS to CS HO for a voice bearer wherein the first information is used, by the MME, to split the voice bearer from a non-voice bearer, and if a second radio access network does not support a dual transfer mode (DTM), to suspend a HO for the non-voice bearer, wherein the suspended non-voice bearer is resumed, if a call corresponding to the voice bearer is terminated and if the UE is in the second radio access network, wherein second information associated with the resuming of the suspended non-voice bearer is transmitted to a core network entity, and wherein the voice bearer and the non-voice bearer are associated with the PS network in a first radio access network and the voice bearer is associated with the CS network in the second radio access network and the non-voice bearer is associated with the PS network in the second radio access network.