Method, device and system for managing resources in networks

A method for managing resources in networks, comprising:

• performing, by a network access server (NAS), access node control protocol, ANCP, protocol conversion on a first request message received from a resource manager (RM);
• sending the converted ANCP message to an access node (AN) to request the AN to perform admission control;
• and returning an admission control result to the RM after receiving the admission control result sent by the AN indicating whether a resource requested by the resource request message is admitted;
• wherein,
• the NAS performs the ANCP protocol conversion on the first request message received from the RM;
• and sends the converted ANCP message to the AN to request the AN to perform the admission control;
• the AN performs the admission control, and returns the admission control result indicating whether the resource requested by the resource request message is admitted;
• and the NAS returns the admission control result to the RM after receiving the admission control result;
• wherein,
• the NAS performs the ANCP protocol conversion on the first request message that comprises a policy to be installed and is received from the RM;
• sends the converted ANCP message to the AN to request the AN to reserve a program bandwidth;
• and performs policy installation according to the policy to be installed in the first request message after receiving the admission control result sent by the AN indicating whether the resource requested by the resource request message is admitted, and sends the admission control result and a policy installation result to the RM.

A communications system, comprising a resource manager (RM), an access node (AN), and a network access server (NAS), wherein:

• the RM is configured to send a first request message to the NAS according to a received resource request message, to request the AN to perform admission control;
• and send a response message of the resource request message after receiving an admission control result sent by the NAS indicating whether a resource requested by the resource request message is admitted;
• the NAS is configured to perform access node control protocol, ANCP, protocol conversion on the first request message sent by the RM;
• send the converted ANCP message to the AN to request the AN to perform the admission control;
• and send the admission control result to the RM after receiving the admission control result returned by the AN indicating whether the resource requested by the resource request message is admitted;
• and
• the AN is configured to perform the admission control according to the ANCP message from the NAS requesting to perform the admission control;
• and return the admission control result indicating whether the resource requested by the resource request message is admitted to the NAS;
• the NAS is further configured to install a policy according to a policy to be installed carried in the first request message sent by the RM after receiving the admission control result returned by the AN, and send the admission control result and the policy installation result to the RM.