摘要:
A method to realize IP flow mobility (IFOM) between 3GPP access and non-3GPP access over GTP based interfaces is proposed. A user equipment is connected to a PDN-GW via a 3GPP access network and a non-3GPP access network. The UE transmits an IFOM triggering message to the PDN-GW, which selects IP flows to be moved based on EPS bearer ID and IP flow description. The PDN-GW sends an Update Bearer Request to a WAG or ePDG, and updates its mapping table if the Update Bearer Request is successful. The UE also updates its mapping table upon receiving an IFOM acknowledgement from the WAG or ePDG. The PDN-GW initiates a 3GPP bearer modification procedure to move the selected IP flows.
摘要:
Apparatus and method are provided for small cell energy saving. In one novel aspect, switch-off-request is broadcasted by the small cell detecting the low-load condition. The small cells upon receiving the switch-off-request message enter the frozen state, which prevents the small cells from switching off. In another novel aspect, the small cell in the low-load condition request measurement reports from the UEs. The UEs replies with the measurement-reports message, which includes the detected neighboring IDs and the UE's traffic load. The low-load small cell includes the information derived from the measurement-reports in the switch-off-request message. In another novel aspect, the small cell broadcasts the switch-on-request message. Upon receiving switch-on-acknowledge messages from switched-off neighboring small cells, the small cell selects one or more target cells to send the cell-activation-request. The switched-off small cells, upon receiving the request to switch-on, uses a cost function to determine whether to switch on.