bearer binding and event reporting function
承载绑定和事件报告功能
A PCRF and a Policy and Charging Enforcement Function (PCEF) may collectively support PCC functions. [...] The PCEFs may enforce the PCC rules provided by PCRF. For example, a PCEF may set up QoS for an IP flow and may provide charging function for the IP flow based on the PCC rules. [...] the PCEF for a serving gateway may be referred to as a Bearer Binding and Event Reporting Function (BBERF).
当 P-GW 与 S-GW 间的接口基于 PMIPv6 时，S-GW 也存在策略控制的功能，成为 BBERF (Bearer Binding and Event Reporting Function，承载绑定和事件报告功能)，S-GW 与 PCRF 之间通过 S7a 接口交换信息。[...] 当 UE 决定从业务网络 1 断开时，PCRF 必须通知 BBERF 删除或激活跟 IP-CAN 会话 1 相关的所有策略控制信息，而保留跟 IP-CAN 会话 2 相关的策略控制信息。
bearer binding and event reporting function
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