发明名称 |
COMMUNICATION SYSTEM, CONGESTION AVOIDANCE METHOD, AND GATEWAY |
摘要 |
PROBLEM TO BE SOLVED: To prevent a system from falling into congestion by keeping an existing call, when a device for policy control or charge control fails or falls into congestion.SOLUTION: An EPC gateway (SGW/PGW) keeps an existing call associated with a PCRF/DRA when a failure or congestion occurs in the PCRF/DRA; and permits a call connection request by automatically performing, in a call unit, switching of a PCC cooperation mode or a PCC non-cooperation mode. A PCC rule acquisition failure is not notified of even when the PCRF receives a PCC rule acquisition request from only one of the SGW/PGW. After recovery from the failure or congestion in the PCRF/DRA, a call whose connection is permitted in the PCC non-cooperation mode is disconnected by being led by the SGW/PGW to expedite restoration into the PCC cooperation mode. An EPC monitoring device is used for automatically switching the PCC cooperation mode and PCC non-cooperation mode. |
申请公布号 |
JP2015115690(A) |
申请公布日期 |
2015.06.22 |
申请号 |
JP20130254903 |
申请日期 |
2013.12.10 |
申请人 |
HITACHI LTD |
发明人 |
TAMEBUCHI HIROSHI;KUBO SHIGEHARU |
分类号 |
H04W76/02;H04L12/70;H04W24/04;H04W88/16 |
主分类号 |
H04W76/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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