Method, system and evolved NodeB apparatus for implementing inter-evolved NodeB handover

摘要

A method, a system and an evolved NodeB (eNB) apparatus for implementing inter-eNB switch are disclosed in the present invention. The method includes: when a user equipment switches from a source-side eNB to a target-side eNB, if the target-side eNB acquires via the Mobility Management Entity (MME) that the Serving Gateway (S-GW) has changed, the target-side eNB adds the new route relation of the S-GW and then updates the General Packet Radio Service (GPRS) Tunnelling Protocol User Plane (GTP-U) entity. The present invention can effectively solve the problem of the uplink data packet loss due to the time difference existing between the update to the Tunnel Endpoint Identifier (TEID) and the routing table by the eNB when inter-eNB switch is performed via X2 and the S-GW has changed, thus enhancing the user experience during the switch.

主权项

1. A method for implementing inter-eNB switch, comprising the following steps of:
when a user equipment switches from a source-side eNB to a target-side eNB, the target-side eNB, after the switch is completed, sending to a Mobility Management Entity (MME) a PATH SWITCH REQUEST message to indicate that the eNB side has changed; the MME, after completing update of the S-GW, sending to the target-side eNB a PATH SWITCH REQUEST ACKNOWLEDGE message for indicating whether a Serving Gateway(S-GW) has changed or not; if the target-side eNB acquires via the MME that the S-GW has changed, the target-side eNB adding a new routing relation of the S-GW and then updating a General Packet Radio Service(GPRS) Tunnelling Protocol User Plane (GTP-U) entity; and the target-side eNB deleting an old routing relation of the S-GW after successfully completing update of the GTP-U entity.