Patent ID: 9380459
Filing Date: 2016-06-28
CPC Classification: H04L,H04W

Claim Text:
1. A method for managing a security key by a mobile station (MS) in a communication system, the method comprising: receiving, by the MS, information for a security key material of at least one member base station (BS) from a master BS; deriving a second security key of the at least one member BS based on the security key material, wherein the security key material is generated based on information related to the master BS; communicating with the at least one member BS based on the second security key of the at least one member BS; communicating with the master BS based on a first security key of the master BS; if the at least one member BS is changed, receiving information for a new security key material from the master BS, wherein a new security key of the at least one member BS is derived based on the information for the new security key material, wherein the second security key is different from the first security key, and wherein the MS has connections with the master BS and the at least one member BS.