method for qos transmission during a handovers between systems, network environment and network provider for this

摘要

The invention discloses a method, a network system and a destination network used to transmit QoS during intersystem switching, thereby ensuring that a user terminal can transmit QoS to a second network access network during intersystem switching. The method comprises the following steps: when a user terminal is switched to a second network from a first network, a second network core network acquires the service quality parameter QoS of the user terminal, and transmits the acquired QoS to a second network access network. The network system comprises a user terminal, a first network and a second network, wherein the second network comprises a second network core network and a second network access network; the second network core network is used to acquire the quality of service parameter QoS of the user terminal and transmit the QoS to the second network access network when the user terminal is switched to the second network from the first network; the second network core network is used to receive the QoS transmitted by the second network core network.