| 摘要 |
<p>The invention discloses a method for updating an air interface key, a core network node, user equipment(UE) and a wireless access system, wherein the update method includes that: the core network node receives a migration indication message which is used for indicating the UE to prepare for migrating from a source radio network controller(RNC) to a target RNC; the core network node calculates a next hop deformation middle key by using key parameters; the core network node transmits the next hop deformation middle key to the target RNC; the target RNC calculates an enhanced key according to the next hop deformation middle key. With the invention, the forward security of users is guaranteed, further, the communication security of the wireless access system is entirely improved.</p> |
