Reduction of user plane congestion
First Claim
1. A congestion information collection function (CICF) node operable to assist in reducing user plane congestion, the CICF node having computer circuitry configured to:
- receive a radio access network (RAN) congestion information (RCI) report from an evolved node B (eNB), wherein the RCI report includes at least two S1 application protocol (S1AP) identifiers indicating user equipments (UEs) that are impacted by RAN user plane congestion;
send an inquiry request message to a mobility management entity (MME) that requests an international mobile subscriber identity (IMSI) and a packet data network (PDN) connection identifier (ID) associated with the S1AP identifiers; and
receive an inquiry response message from the MME that includes the IMSI and PDN ID associated with the S1AP identifiers, thereby enabling the CICF node to discover an assigned policy and charging rules function (PCRF) for the UEs that are impacted by the RAN user plane congestion.
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Accused Products
Abstract
Technology for reducing user plane congestion is disclosed. An inquiry request message can be received at a mobility management entity (MME) from a congestion information collection function (CICF). The inquiry request message can request an international mobile subscriber identity (IMSI) and a packet data network (PDN) connection identifier (ID) associated with user equipments (UEs) that are impacted by radio access network (RAN) user plane congestion. The IMSI and the PDN connection ID that are associated with the UEs can be identified based in part on the inquiry request message. An inquiry response message that includes the IMSI and the PDN connection ID can be sent to the CICF to enable the CICF to discover an assigned policy and charging rules function (PCRF) for the UEs that are impacted by the RAN user plane congestion, wherein the PCRF is configured to implement network policies to reduce the RAN user plane congestion.
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Citations
20 Claims
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1. A congestion information collection function (CICF) node operable to assist in reducing user plane congestion, the CICF node having computer circuitry configured to:
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receive a radio access network (RAN) congestion information (RCI) report from an evolved node B (eNB), wherein the RCI report includes at least two S1 application protocol (S1AP) identifiers indicating user equipments (UEs) that are impacted by RAN user plane congestion; send an inquiry request message to a mobility management entity (MME) that requests an international mobile subscriber identity (IMSI) and a packet data network (PDN) connection identifier (ID) associated with the S1AP identifiers; and receive an inquiry response message from the MME that includes the IMSI and PDN ID associated with the S1AP identifiers, thereby enabling the CICF node to discover an assigned policy and charging rules function (PCRF) for the UEs that are impacted by the RAN user plane congestion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A congestion information collection function (CICF) node operable to assist in reducing user plane congestion, the CICF node having computer circuitry configured to:
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receive a radio access network (RAN) congestion information (RCI) report from an operations and management (OAM) node, wherein the RCI report includes at least one cell identifier (ID) or evolved node B (eNB) ID that is impacted by RAN user plane congestion; send an inquiry request message to a mobility management entity (MME) that includes a list of user equipments (UEs) within the cell ID or eNB ID, wherein the inquiry request message requests an international mobile subscriber identity (IMSI) and a packet data network (PDN) connection identifier (ID) associated with the list of UEs; and receive an inquiry response message from the MME that includes the IMSI and PDN ID associated with the list of UEs, thereby enabling the CICF node to discover an assigned policy and charging rules function (PCRF) for the list of UEs that are impacted by the RAN user plane congestion. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for reducing user plane congestion, the method comprising:
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receiving an inquiry request message at a mobility management entity (MME) from a congestion information collection function (CICF), the inquiry request message requesting an international mobile subscriber identity (IMSI) and a packet data network (PDN) connection identifier (ID) associated with user equipments (UEs) that are impacted by radio access network (RAN) user plane congestion; identifying the IMSI and the PDN connection ID that are associated with the UEs based in part on the inquiry request message; and sending an inquiry response message that includes the IMSI and the PDN connection ID to the CICF to enable the CICF to discover an assigned policy and charging rules function (PCRF) for the UEs that are impacted by the RAN user plane congestion, wherein the PCRF is configured to implement network policies to reduce the RAN user plane congestion. - View Dependent Claims (18, 19, 20)
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Specification