Method for selecting bearer mode, packet gateway, and policy and charging rule function entity

摘要

The present invention provides a method for selecting a bearer mode, a packet gateway, and a policy and charging rule function entity, relating to the field of communications technologies, and solving the problem that a base station selects a suitable air interface transmission mode for a bearer of a mobile terminal. Indication information of an air interface transmission mode supported by a mobile terminal is received. According to the indication information and a received enhanced policy and charging control rule that is sent by a policy and charging rule function entity, an air interface transmission mode allowed to be used by a bearer bound with a service flow of the mobile terminal is determined. A session establishment reply message is sent to a serving gateway to which the mobile terminal belongs, where the session establishment reply message comprises the air interface transmission mode allowed to be used by the bearer.

主权项

1. A method for selecting a bearer mode, comprising:
receiving, by a packet gateway in a core network, indication information from a mobile terminal, wherein the indication information includes air interface transmission modes supported by the mobile terminal for establishing a session with the core network; receiving an enhanced policy and charging control rule (PCC rule) sent by a policy and charging rule function (PCRF) entity in the core network, wherein the enhanced PCC rule comprises: (a) at least one service flow of the mobile terminal, and (b) an air interface transmission mode associated with each service flow of the mobile terminal; determining, according to the indication information and the enhanced PCC rule, an appropriate air interface transmission mode allowed to be used by one of a plurality of bearers of the mobile terminal, wherein each bearer is bound with one or more of the at least one service flow of the mobile terminal; and sending a session establishment reply message to a serving gateway to which the mobile terminal belongs, wherein the session establishment reply message comprises the determined appropriate air interface transmission mode allowed to be used by the bearer.