Policy decision method, charging device, and system

A policy decision method, comprising:

• maintaining, by a charging system, a counter of a second user;
• receiving, by the charging system, a session establishment request of the second user and sent by a policy and charging rules function (PCRF) device;
• establishing, by the charging system according to the session establishment request of the second user, a session of the second user established between the charging system and the PCRF device;
• receiving, by the charging system using the session of the second user, a counter status acquiring request requesting the counter of the second user;
• obtaining, by the charging system, a current status of the counter of the second user according to the counter status acquiring request;
• and
• returning, by the charging system, the current status of the counter of the second user to the PCRF device using the session of the second user, wherein the PCRF device determines an affected first user according to the current status of the counter of the second user, generates a control policy for the first user according to the current status of the counter of the second user, and sends the generated control policy to a gateway device using a session of the first user established between the gateway device and the PCRF device.

A charging device, comprising:

• a memory storage comprising instructions;
• at least one network interface;
• and
• at least one processor coupled to the memory and to the at least one network interface, wherein the instructions are executed by the at least one processor to:
• maintain a counter of a second user;
• receive a session establishment request of the second user sent by a policy and charging rules function (PCRF) device;
• establish, according to the session establishment request of the second user, a session of the second user established between the charging device and the PCRF device;
• receive, using the session of the second user, a counter status acquiring request requesting the counter of the second user;
• obtain a current status of the counter of the second user according to the counter status acquiring request;
• and
• return the current status of the counter of the second user to the PCRF device using the session of the second user, wherein the PCRF device determines an affected first user according to the current status of the counter of the second user, generates a control policy for the first user according to the current status of the counter of the second user, and sends the generated control policy to a gateway device using a session of the first user established between the gateway device and the PCRF device.