System and method for providing binding support function in a network

A system for providing binding support management service, the system comprising binding support function (BSF) (2000), wherein the BSF (2000) comprising:

• a receiving module (2002) configured to receive a binding information of a packet data unit (PDU) session for a user equipment (UE) from a policy control function (PCF (1508)), wherein the binding information includes at least one of a user identity, a data network name (DNN), a user equipment (UE) internet protocol (IP) address, network slice for the PDU session;
• a processing module (2006) configured to create a PCF (1508) session binding resource to store the binding information of the PDU session for the UE;
• a sending module (2004) configured to send a response message having a representation of the created binding information to the PCF (1508);
• and
• the processing module (2006) configured to enable discovery of binding information;
• the receiving module (2002) configured to receive a hypertext transfer protocol (http) request message with query parameters from the PCF (1508), wherein the query parameters include at least one of UE address, subscription permanent identifier (SUPI)/generic public subscription identifier (GPSI), data network name (DNN), single-network slice selection assistance information (S-NSSAI), IPv4 address domain;
• the processing module (2006) configured to match information stored in the session binding resource with at least one of the query parameters;
• and
• on determining that the query parameters are matched with the session binding resource, the sending module (2004) configured to send a response message containing the binding information to the PCF (1508).

A method for providing binding support management service, the method comprising:

• receiving, by a binding support function (BSF (2000)), a binding information of a packet data unit (PDU) session for a user equipment (UE) from a policy control function (PCF) (1508), wherein the binding information includes at least one of a user identity, a data network name (DNN), a user equipment (UE) internet protocol (IP) address, network slice for the PDU session;
• creating, by the BSF (2000), a PCF (1508) session binding resource to store the binding information of the PDU session for the UE;
• sending, by the BSF (2000), a response message having a representation of the created binding information to the PCF (1508);
• and
• enabling, by the BSF (2000), discovery of the binding information, wherein
• receiving, by the BSF (2000), a Hypertext Transfer Protocol (http) request message with query parameters from the PCF (1508), wherein the query parameters include at least one of UE address, subscription permanent identifier (SUPI)/generic public subscription identifier (GPSI), data network name (DNN), single-network slice selection assistance information (S-NSSAI), IPv4 address domain;
• matching, by the BSF (2000), information stored in the session binding resource with at least one of the query parameters;
• and
• on determining that the query parameters are matched with the session binding resource, sending, by the BSF (2000), a response message containing the binding information to the PCF (1508).

A computer program product comprising a non-transitory computer-readable medium comprising instructions that, when executed by one or more processors, cause the one or more processors to execute a method for providing binding support management service, the method comprising:

• receiving, by a binding support function (BSF (2000)), a binding information of a packet data unit (PDU) session for a user equipment (UE) from a policy control function (PCF) (1508), wherein the binding information includes at least one of a user identity, a data network name (DNN), a user equipment (UE) internet protocol (IP) address, network slice for the PDU session;
• creating, by the BSF (2000), a PCF (1508) session binding resource to store the binding information of the PDU session for the UE;
• sending, by the BSF (2000), a response message having a representation of the created binding information to the PCF (1508);
• and
• enabling, by the BSF (2000), discovery of the binding information, wherein
• receiving, by the BSF (2000), a Hypertext Transfer Protocol (http) request message with query parameters from the PCF (1508), wherein the query parameters include at least one of UE address, subscription permanent identifier (SUPI)/generic public subscription identifier (GPSI), data network name (DNN), single-network slice selection assistance information (S-NSSAI), IPv4 address domain;
• matching, by the BSF (2000), information stored in the session binding resource with at least one of the query parameters;
• and
• on determining that the query parameters are matched with the session binding resource, sending, by the BSF (2000), a response message containing the binding information to the PCF (1508).