Patent ID: 9084156
Filing Date: 2015-07-14
Classification: H04L,H04W

Abstract:
1. A method of network resource reservation for a user equipment (UE) in a centralized resource and admission control system, wherein the system comprises a transport stratum, and the transport stratum includes a resource and admission control function (RACF), a Network Attachment Control Function (NACF) and a transport function, a mobility management control function (MMCF) is added at the transport stratum to manage and control the UE, and an external interface is added in the RACF to enable direct communications between the RACF and the MMCF, so that the RACF collaborates with the MMCF to realize the method, the method comprising: while a UE is moving in transport paths of different networks and before a network handover takes place, determining, by the MMCF, a target transport path for the UE based on quality of service (OoS) information of an access section and a core section of the target transport path; directly receiving by the RACF, from the MMCF, a request for resource reservation on a target transport path for the UE before a network handover takes place; controlling by the RACF, the transport function to reserve network resources in advance on the target transport path according to the resource reservation request, while retaining the network resources on a current transport path where the UE is located; and returning by the RACF, a result of the network resource reservation to the MMCF, wherein the controlling of the transport function to reserve the network resources in advance on the target transport path according to the resource reservation request, comprising: making a decision according to the resource reservation request from the MMCF and user ID of the UE, location information of the target transport path and user transport configuration of the UE pushed by the NACF, to determine whether to reserve the network resources on the target transport path; and based on the decision result, controlling the transport function to reserve the network resources in advance on the target transport path.