Policy control function fallback
AssigneeT-Mobile USA, Inc.
InventorMallika Deshpande
Life of this patent
Estimating the term…
Abstract
Systems, methods, and devices can be utilized for policy control function (PCF) fallback during the set up of a session utilizing a 5th Generation (5G) core network. An example method includes receiving, from a session management function (SMF), a request for a policy corresponding to a session. The request includes a first policy identifier corresponding to a first policy control function (PCF). The example method further includes determining that the first PCF is unavailable, generating a modified request by replacing the first policy identifier with a second policy identifier in the request. The second policy identifier corresponds to a second PCF. The example method also includes transmitting, to the second PCF, the modified second request.
Claims20
-20. (canceled)
A system, comprising:
- one or more processors;
- and
- a memory storing components executable by the one or more processors to perform operations comprising:
- receiving, from a session management function (SMF), a first request for a policy corresponding to a session, the first request comprising a first policy identifier corresponding to a first policy control function (PCF);
- determining that the first PCF is unavailable;
- generating a modified first request by replacing the first policy identifier with a second policy identifier in the first request, the second policy identifier corresponding to a second PCF;
- transmitting, to the second PCF, the modified first request;
- receiving, from the SMF, a second request that requests the policy associated with the session;
- transmitting, to the first PCF, the second request;
- receiving, from the first PCF, a response that comprises the first policy identifier;
- forwarding, to the SMF, the response;
- transmitting, to the second PCF, the second request;
- and
- receiving, from the second PCF, a second response that comprises the second policy identifier.
A method, comprising:
- receiving, from a session management function (SMF), a first request for a policy corresponding to a session, the first request comprising a first policy identifier corresponding to a first policy control function (PCF);
- determining that the first PCF is unavailable;
- generating a modified first request by replacing the first policy identifier with a second policy identifier in the first request, the second policy identifier corresponding to a second PCF;
- transmitting, to the second PCF, the modified first request;
- receiving, from the SMF, a second request that requests a change to the policy associated with the session, the second request comprising the first policy identifier;
- transmitting, to the first PCF, the second request;
- receiving, from the first PCF, a response that comprises the first policy identifier;
- transmitting, to the SMF, the response;
- generating a revised second request by replacing the first policy identifier with the second policy identifier in the second request;
- transmitting, to the second PCF, the revised second request;
- and
- receiving, from the second PCF, a second response that comprises the second policy identifier.
A system, comprising:
- one or more processors;
- and
- a memory storing components executable by the one or more processors to perform operations comprising:
- receiving, from a session management function (SMF), a first SIP request that requests a policy associated with a voice session;
- transmitting, to a first policy control function (PCF), the first SIP request;
- receiving, from the first PCF, a first SIP response that comprises a first policy identifier corresponding to the policy of the voice session;
- forwarding, to the SMF, the first SIP response;
- receiving, from the SMF, a second SIP request that comprises the first policy identifier;
- determining that a communication link with the first PCF is interrupted;
- generating a modified second SIP request by replacing the first policy identifier with a second policy identifier in the second SIP request;
- and
- transmitting, to a second PCF, the modified second SIP request.
Dependencies are inferred from the claim text.