Patent ID: 8787313

Claim:
A method for transmitting Quality of Service (QoS) parameter during a handover process between systems, wherein during the handover process of a User Equipment (UE) from a first network to a second network, the method comprises: acquiring, by a second network mobility management network element, a first QoS of the UE, wherein the first network is a 2G/3G system, the second network is a System Architecture Evolution (SAE) system, and the acquiring the first QoS of the UE comprises: using default QoS configured in the second network mobility management network element as the first QoS of the UE; transmitting, by the second network mobility management network element, the acquired first QoS to at least one of a second network access network and a user plane network element; acquiring by the second network mobility management network element, subscribed QoS of the UE from subscription database, comparing the subscribed QoS of first QoS; and if a comparison result indicates that the subscribed QoS of the UE and the first QoS are inconsistent, transmitting, by the second network mobility management network element, the subscribed QoS of the UE to the at least one of the second network access network and the user plane network element.