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Session management method, application function entity, policy server and protocol converter

  • US 10,225,151 B2
  • Filed: 07/18/2014
  • Issued: 03/05/2019
  • Est. Priority Date: 07/26/2013
  • Status: Active Grant
First Claim
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1. A session management method, comprising:

  • sending, by an application function AF entity, a first Hypertext Transfer Protocol HTTP request message to a policy server when the AF entity establishes an AF session with the policy server,wherein the AF entity sends AF session identifier information to the policy server via the first HTTP request message;

    or, the AF entity acquires AF session identifier information allocated for the AF session by the policy server from an answer for the first HTTP request message returned by the policy server;

    receiving, by the AF entity, a second HTTP request message sent to the AF entity when the policy server notifies the AF entity of a traffic plane event of the AF session, wherein the second HTTP request message includes the AF session identifier information; and

    returning, by the AF entity, an answer for the second HTTP request message to the policy server;

    the method further comprising;

    when the AF entity modifies or terminates the AF session, sending, by the AF entity, a third HTTP request message to the policy server, wherein the third HTTP request message includes the AF session identifier information; and

    receiving, by the AF entity, an answer for the third HTTP request message returned by the policy server;

    wherein sending, by the AF entity, the first HTTP request message or the third HTTP request message to the policy server comprises;

    when a first Transmission Control Protocol TCP connection has existed between the AF entity and the policy server, sending, by the AF entity, the first HTTP request message or the third HTTP request message to the policy server by using the first TCP connection; and

    when the first TCP connection is not established between the AF entity and the policy server, establishing, by the AF, the first TCP connection with the policy server first, and then sending the first HTTP request message or the third HTTP request message.

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