Method, System and Evolved NodeB Apparatus for Implementing Inter-Evolved NodeB Handover
First Claim
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, if the target-side eNB acquires via a Mobility Management Entity (MME) that a Serving Gateway (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.
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Abstract
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.
45 Citations
14 Claims
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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, if the target-side eNB acquires via a Mobility Management Entity (MME) that a Serving Gateway (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. - View Dependent Claims (2, 3, 4, 5)
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6. A system for implementing inter-eNB switch, comprising a target-side eNB and a Mobility Management Entity (MME), wherein:
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the target-side eNB is configured to, after completing a switch of a user equipment (UE) from a source-side eNB, send to the MME a message for notifying that the eNB side has changed;
when acquiring via the MME that a Serving Gateway (S-GW) has changed, add a new routing relation of the S-GW and then update a General Packet Radio Service (GPRS) Tunnelling Protocol User Plane (GTP-U) entity;the MME is configured to, after completing update of the S-GW, inform the target-side eNB of whether the S-GW has changed or not. - View Dependent Claims (7, 8, 9, 10)
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11. An evolved NodeB (eNB) apparatus for implementing inter-eNB switch, comprising a control-plane sub-system, a user-plane sub-system and a route sub-system, wherein,
the control-plane sub-system is configured to, after completing a switch of a user equipment (UE) from a source-side eNB, when acquiring via a Mobility Management Entity (MME) that a Serving Gateway (S-GW) has changed, notify the route sub-system to add a new routing relation and then notify the user-plane sub-system to update a General Packet Radio Service (GPRS) Tunnelling Protocol User Plane (GTP-U) entity; -
the route sub-system is configured to add new routing information of the S-GW according to a notification of the control-plane sub-system; the user-plane sub-system is configured to update the GTP-U entity according to a notification of the control-plane sub-system. - View Dependent Claims (12, 13, 14)
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Specification