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Content for TR 33.759 Word version: 19.0.0

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5 Key issues p. 8

5.1 Key Issue #1: security enhancements to NEF services in support of multiple USSs p. 8

5.1.1 Key issue details p. 8

5.1.2 Threats p. 8

5.1.3 Potential security requirements p. 8

6 Solutions p. 9

6.0 Mapping of solutions to key issues p. 9

6.1 Solution #1: UAV Authentication and Authorization for Multiple USS p. 9

6.1.1 Introduction p. 9

6.1.2 Solution details p. 9

6.1.3 Evaluation p. 10

6.2 Solution # 2: UUAA supporting multiple USS p. 10

6.2.1 Introduction p. 10

6.2.2 Solution details p. 10

6.2.3 Evaluation p. 11

6.3 Solution # 3: Pairing authorization supporting multiple USS p. 11

6.3.1 Introduction p. 11

6.3.2 Solution details p. 11

6.3.3 Evaluation p. 12

6.4 Solution # 4: revocation supporting multiple USS p. 12

6.4.1 Introduction p. 12

6.4.2 Solution details p. 12

6.4.3 Evaluation p. 12

6.5 Solution #5: UUAA and authorization of target USS for the multiple USS case p. 13

6.5.1 Introduction p. 13

6.5.2 Solution details p. 13

6.5.2.1 Identification of USS-level changeover need p. 13

6.5.2.2 Enhancement for UUAA p. 13

6.5.2.3 Enhancement for authorization of target USS to use exposure services for the UAV p. 13

6.5.3 Evaluation p. 14

6.6 Solution #6: UUAA and authorization of target USS using token for the multiple USS case p. 14

6.6.1 Introduction p. 14

6.6.2 Solution details p. 14

6.6.2.1 Identification of USS-level changeover need p. 14

6.6.2.2 Enhancement for UUAA p. 14

6.6.2.3 Enhancement for authorization of target USS to use exposure services for the UAV p. 14

6.6.3 Evaluation p. 15

6.7 Solution #7: UUAA for USS changeover p. 15

6.7.1 Introduction p. 15

6.7.2 Solution details p. 15

6.7.3 Evaluation p. 16

6.8 Solution #8: UAV triggered UUAA for USS changeover p. 16

6.8.1 Introduction p. 16

6.8.2 Solution details p. 16

6.8.3 Evaluation p. 16

6.9 Solution #9: Serving USS triggered UUAA for target USS p. 16

6.9.1 Introduction p. 16

6.9.2 Solution details p. 16

6.9.3 Evaluation p. 17

7 Conclusions p. 17

7.1 Conclusion on KI #1 p. 17

$ Change history p. 18