PATENT CLAIM ANALYSIS

Application Number: 16383087
Application Type: Utility
Filing Date: 2019-04
Publication Date: 2019-08
Patent Classification: ["370", "329000"]

Abstract:
In a method for security handling in a mobility of a terminal device; a target access and mobility management function (AMF) entity receives a first message for registering a terminal device, sends a second message to a source AMF entity after receiving the first message. The source AMF entity derives a first key based on a key between the source AMF entity and the terminal device, sends the first key to the target AMF entity. The target AMF entity determines to use the first key based on security related information after receiving the first key and determines a communication key between the target AMF entity and the terminal device based on the first key after determining to use the first key.

Claim (Index 18):
A communication system, comprising:\n a target access and mobility management function (AMF) entity; a source AMF entity coupled to the target AMF entity; and an authentication function entity coupled to the target AMF entity, wherein the target AMF entity is configured to receive a first message for registering a terminal devices and to send a second message to the source AMF entity after receiving the first message, wherein the second message includes an identifier of the terminal device, wherein the source AMF entity is configured to derive a first key based on a key between the source AMF entity and the terminal device, and to send the first key to the target AMF entity, wherein the target AMF entity is further configured to determine not to use the first key based on security related information after receiving the first key, and to send a key request message to the authentication function entity after determining not to use the first key, wherein the authentication function entity is configured to derive a second key based on a shared key between the authentication function entity and the terminal devices and to send the second key to the target AMF entity, and wherein the target AMF entity is further configured to determine a communication key between the target AMF entity and the terminal device based on the second key.

Metadata:
- Claim Count in Document: 56.0
- Percentile: 100.0
- Lexical Diversity: 2.80435
- Patent Class: 370.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16235632', '12633948', '15089396', '16235438', '16235523']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5526376123537483
- 35 USC 102 Novelty (BERT): 0.495360456075576
- Combined Prediction Score: 0.5469098967259312
- Mean Citation Score: 236.068106
- Max Citation Score: 251.7243
- Similarity Product: 184.971902170372

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