Method for supporting indication of a failure event to a source access system
A method for supporting indication of a failure event to a source access system is provided. The method includes notifying, by the source access system, information of a source cell to a target access system, routing, by the target access system, a message to the base station or the base station controller of the source access through a core network by use of the information of the source cell received from the source access system when the target access system needs to transmit a message to the source access system. By use of the method provided by the present disclosure, a problem of mobility robustness optimization (MRO) among different radio access technology (RAT) may be notified to the source access system, so as to avoid impact for a terminal, reduce operator configuration.
1. A method for executing a handover in a communication system, the method comprising:
receiving, by a target base station of a target access system, from a source base station of a source access system, information of a source cell of the source base station;
receiving, by the target base station, from another base station of the target access system, a radio link failure report;
detecting, by the target base station, that the source base station triggers an unnecessary inter-radio access technology (inter-RAT) handover to a target cell of the target base station, based on the radio link failure report, and
transmitting, to the source access system, a handover report using the information of the source cell.
2. The method of claim 1 , wherein the information of the source cell is received during handover preparation.
3. The method of claim 1 , wherein the information of the source cell comprises a cell identifier of the source cell.
4. The method of claim 1 , wherein the target base station receives the information of the source cell through a transparent container.
5. The method of claim 2 , wherein the information of the source cell further comprises a tracking area identity (TAI) to which the source cell belongs.
6. The method of claim 5 , wherein the information of the source cell further comprises at least one of a location area identity (LAI) to which the source cell belongs, a routing area code (RAC) to which the source cell belongs, an identifier of the source base station, and an extended identifier of the source base station.
7. A base station of a target access system for executing a handover in a communication system, the base station comprising:
a transceiver configured to:
receive, from a source base station of a source access system, information of a source cell of the source base station during handover preparation,
receive, from another base station of the target access system, a radio link failure report, and
transmit a handover report to the source access system using the information of the source cell when detecting that the source base station triggers an unnecessary inter-radio access technology (inter-RAT) handover to a target cell of the base station, based on the radio link failure report; and
a controller configured to:
detect that the source base station triggers the unnecessary inter-RAT handover based on the radio link failure report, and
control the transceiver.
8. The base station of claim 7 , wherein the transceiver is further configured to receive the information of the source cell through a transparent container.
9. The base station of claim 7 , wherein the transceiver is further configured to receive the information of the source cell during handover preparation.
10. The base station of claim 7 , wherein the information of the source cell comprises a cell identifier of the source cell.
11. The base station of claim 10 , wherein the information of the source cell further comprises a tracking area identity (TAI) to which the source cell belongs.
12. The base station of claim 11 , wherein the information of the source cell further comprises at least one of a location area identity (LAI) to which the source cell belongs, a routing area code (RAC) to which the source cell belongs, an identifier of the source base station, and an extended identifier of the source base station.