| CPC H04L 63/1466 (2013.01) [H04L 9/3242 (2013.01); H04L 63/20 (2013.01); H04W 8/24 (2013.01); H04W 12/04 (2013.01); H04W 12/06 (2013.01); H04W 12/08 (2013.01); H04W 12/106 (2021.01); H04W 12/125 (2021.01)] | 20 Claims |

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1. A mobile communication method, comprising:
receiving a non-access stratum (NAS) security mode command message from a mobility management entity, wherein the NAS security mode command message carries a second user equipment (UE) security capability sent back by the mobility management entity;
verifying integrity of the NAS security mode command message and whether the second UE security capability is consistent with a first UE security capability sent to the mobility management entity; and
after successfully verifying both the integrity of the NAS security mode command message and the second UE security capability is consistent with the first UE security capability, sending UE capability information of a UE in a security protected NAS message to the mobility management entity, wherein the UE capability information indicates a service that the UE is capable of using.
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