PATENT CLAIM ANALYSIS

Application Number: 16235632
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["713", "171000"]

Abstract:
The present disclosure relates to methods and apparatus for flexible, security context management during AMF changes. One aspect of the disclosure is a mechanism for achieving backward security during AMF changes. Instead of passing the current NAS key to the target AMF, the source AMF derives a new NAS key, provides the new NAS key to the target AMF, and sends a key change indication to the UE, either directly or through some other network node. The UE can then derive the new NAS key from the old NAS key. In some embodiments, the AMF may provide a key generation parameter to the UE to use in deriving the new NAS key. In other embodiments, the target AMF may change one or more security algorithms.

Claim (Index 2):
The method of  claim 1  further comprising:\n receiving the key change indication from the target mobility management function in the transparent container; and \n forwarding the transparent container with the key change indication to the user equipment.

Metadata:
- Claim Count in Document: 80.0
- Percentile: 98.0
- Lexical Diversity: 2.09091
- Patent Class: 713.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16235438', '16235523', '15589687', '14667099', '15787575']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4635555244570734
- 35 USC 102 Novelty (BERT): 0.6051897464242135
- Combined Prediction Score: 0.4777189466537874
- Mean Citation Score: 417.205364
- Max Citation Score: 595.22943
- Similarity Product: 465.12722784050345

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test