PATENT CLAIM ANALYSIS

Application Number: 16235523
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["713", "155000"]

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 in idle mode. 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, along with a key change indication indicating that the NAS key has changed. The target AMF sends the key change indication to the user equipment.

Claim (Index 22):
The method of  claim 15  wherein the non-access stratum key comprises a core network key.

Metadata:
- Claim Count in Document: 40.0
- Percentile: 98.0
- Lexical Diversity: 1.86275
- Patent Class: 713.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['16235438', '16235632', '15787575', '15089396', '13103333']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4810549693116854
- 35 USC 102 Novelty (BERT): 0.6596927883636817
- Combined Prediction Score: 0.498918751216885
- Mean Citation Score: 440.91816
- Max Citation Score: 689.1685
- Similarity Product: 608.1930037370026

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