Patent ID: 9445286
Filing Date: 2016-09-13
CPC Classification: H04L,H04W

Claim Text:
1. A protocol version negotiation method, comprising: receiving, by a mobile terminal, an air interface message sent by a base station according to a 3rd Generation Partnership Project protocol, wherein the air interface message comprises an information element for indicating a highest protocol version supported by the base station, and the air interface message is sent before the base station sends a request message for querying a mobile terminal capability set; obtaining the highest protocol version supported by the base station according to the information element; determining whether the highest protocol version supported by the mobile terminal is later than the highest protocol version supported by the base station; and if the highest protocol version supported by the mobile terminal is later than the highest protocol version supported by the base station, configuring, by the mobile terminal, a protocol version used by the mobile terminal to a protocol version same as the highest protocol version supported by the base station, wherein the information element of the air interface message includes a number indicating the highest protocol version supported by the base station in one of a system message and a master information block system message.