1、 TIA-4957.200-A (Revision of TIA-4957.200) July 2017Layer 2 Standard Specification for the Smart Utility Network ANSI/TIA-4957.200-A-2017 APPROVED: JULY 11, 2017 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between
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21、CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODU
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23、d vii 2 1 Introduction . 1 3 1.1 Scope and Purpose 1 4 1.2 Release History . 1 5 2 References . 2 6 2.1 General . 2 7 2.2 IEEE 2 8 2.3 ANSI/TIA 3 9 2.4 IETF . 3 10 3 Definitions . 5 11 3.1 Terminologies . 5 12 3.2 Acronyms 5 13 4 Constants 7 14 5 Data Structures . 8 15 5.1 Frame Formats . 8 16 5.1.1
24、 Bit Order of Transmissions 8 17 5.1.2 PAN Advertisement Frame . 8 18 5.1.3 PAN Advertisement Solicit Frame . 9 19 5.1.4 PAN Configuration Frame . 10 20 5.1.5 PAN Configuration Solicit Frame 11 21 5.1.6 Upper Layer Application Data Frame 11 22 5.1.7 Acknowledgment Frame . 13 23 5.1.8 EAPOL Frame . 1
25、4 24 5.2 Key Data Cryptographic Encapsulations (KDEs) 15 25 5.2.1 Pairwise Master Key ID KDE (PMKID) 15 26 5.2.2 Pairwise Transient Key ID KDE (PTKID) 16 27 5.2.3 Group Transient Key Liveness KDE (GTKL). 16 28 5.2.4 Group Transient Key KDE (GTK). . 17 29 5.2.5 Lifetime KDE. 17 30 5.3 Information Ele
26、ments 17 31 5.3.1 Wi-SUN Header Information Elements (WH-IEs) 17 32 5.3.1.1 Unicast Timing and Frame Type Information Element (UTT-IE) 18 33 5.3.2 Wi-SUN Payload Information Elements (WP-IEs) . 22 34 5.3.2.1 Channel Plan / Hopping Schedule Information Elements . 22 35 5.3.2.1.1 Unicast Schedule Info
27、rmation Element (US-IE) 23 36 5.3.2.1.2 Broadcast Schedule Information Element (BS-IE) 23 37 5.3.2.1.3 Channel Information Fields . 23 38 5.3.2.1.4 Field Definitions 24 39 5.3.2.1.5 Excluded Channel Ranges Field . 26 40 ANSI/TIA-PN4957.200a 5.3.2.1.6 Excluded Channel Mask Field . 27 1 5.3.2.2 Vendor
28、 Payload Information Element (VP-IE) 28 2 5.3.2.3 PAN Information Element (PAN-IE) . 28 3 5.3.2.4 Network Name Information Element (NETNAME-IE) . 29 4 5.3.2.5 PAN Version Information Element (PANVER-IE) . 30 5 5.3.2.6 GTK Hash Information Element (GTKHASH-IE) 30 6 5.3.3 MP Information Element (MP-IE
29、) 30 7 5.3.4 Frame Requirements and IEs . 32 8 5.4 L2 Mesh Frame Formats . 33 9 5.4.2 Representation Order . 33 10 5.4.3 MHD-PDU . 33 11 5.4.4 MHD-HDR . 33 12 5.4.5 MHD-Control . 34 13 5.4.6 Address List 34 14 5.4.7 MHD-PDU Data 34 15 5.4.8 Data Elements 35 16 5.4.8.1 RAMP Data Elements 35 17 5.4.8.
30、1.5 Route Announcement (RTA) Data Element 35 18 5.4.8.2 Service Registration (SREG) Data Element . 35 19 5.4.8.3 Service Registration Acknowledgement (SREG-ACK) Data Element 36 20 5.4.8.4 Service Registration Negative Acknowledgement (SREG-NACK) Data Element21 36 22 5.4.8.5 Route Announcement Reques
31、t (RTA-REQ) Data Element 36 23 5.4.8.6 Route Removal (RTR) Data Element . 36 24 6. LLC Operation 37 25 6.1 Protocol Dispatch Operation 37 26 6.2 L2 MESH Operation . 37 27 6.2.1 Construct MHD-HDR . 37 28 6.2.2 Forward MHD-PDU 37 29 6.2.3 MHD-PDU Reception . 37 30 6.2.4 MHD-PDU Transmission 38 31 6.2.
32、5 RAMP Protocol Procedures . 38 32 6.2.5.2 Periodic RAMP Actions . 38 33 6.2.5.3 Route Information Update . 38 34 6.2.5.4 Generation of RTA Data Element . 39 35 6.2.5.5 Generation of RTR MHD-PDU 39 36 6.2.5.6 Generation of SREG MHD-PDU . 39 37 6.2.5.7 Generation of SREG-ACK MHD-PDU . 39 38 6.2.5.8 G
33、eneration of SREG-NACK MHD-PDU 39 39 6.2.5.9 Generation of RTR-REQ MHD-PDU . 39 40 6.2.6 RAMP Reception Procedures . 39 41 6.2.6.1 RTA Data Element . 39 42 6.2.6.2 SREG Data Element 40 43 6.2.6.3 SREG-ACK Data Element 40 44 6.2.6.4 SREG-NACK Data Element . 40 45 6.2.6.5 RTA-REQ Data Element 40 46 6.
34、2.6.6 RTR Data Element . 40 47 ANSI/TIA-PN4957.200a iii 6.2.7 RAMP Transmission Procedures 40 1 6.2.7.1 Route Announcement 40 2 6.2.7.2 Route Removal 41 3 6.2.7.3 Service Registration . 41 4 6.2.7.4 Service Registration Response 41 5 6.2.7.5 Service Registration Negative Response . 41 6 6.2.7.6 Rout
35、e Announcement Request 42 7 7 MAC Operation . 43 8 7.1 Channel Access . 43 9 7.2 Frame Exchange Definitions 43 10 7.3 Unicast Frame Exchange (UFE) . 44 11 7.3.1 Frame Transmission, Reception, and Acknowledgement . 44 12 7.3.1.1 Directed Frame Exchange . 45 13 7.3.1.1.1 Retransmission . 47 14 7.3.1.2
36、 Extended Directed Frame Exchange . 47 15 7.3.1.2.1 Retransmission . 49 16 7.4 Broadcast Frame Exchange (BFE) . 50 17 7.4.1 Broadcast Schedule Advertisement 50 18 7.4.2 Broadcast Frame Reception . 50 19 7.4.3 Broadcast Frame Transmission 50 20 7.5 Frequency Hopping . 50 21 7.5.1 Channel Functions 50
37、 22 7.5.1.1 TR51 Channel Function (TR51CF) 50 23 7.5.1.2 Direct Hash Channel Function (DH1CF) 52 24 7.5.1.3 Fixed Channel 52 25 7.5.1.4 Vendor Defined Channel Function . 52 26 7.6 FAN Discovery and Joining . 53 27 7.6.1 Usage of MLME-WS-ASYNC-FRAME 53 28 7.6.2 Usage of Trickle Timers 54 29 7.6.3 Dis
38、covery / Join Algorithm. 56 30 7.6.3.1 Join State 1: No PAN . 59 31 7.6.3.2 Join State 2: Acquire Keys . 59 32 7.6.3.3 Join State 3: PAN Selected 60 33 7.6.3.4 Join State 4: Secured . 60 34 7.6.3.4.1 Layer 3 Formation . 61 35 7.6.3.4.2 Layer 2 Formation . 61 36 8 Service Access Points 63 37 8.1 Data
39、 Link SAP (DL SAP) 64 38 8.1.1 FAN Data Link Data Interface (FD-DATA) 64 39 8.1.1.1 Layer 3 Routed Interface . 64 40 8.1.1.1.1 FD-DATA.request . 64 41 8.1.1.1.2 FD-DATA.confirm 64 42 8.1.1.1.3 FD-DATA.indication 64 43 8.1.1.2 Layer 2 Mesh Interface (MHDS) 64 44 8.1.1.2.1 FD-DATA.request . 65 45 8.1.
40、1.2.2 FD-DATA.confirm 65 46 ANSI/TIA-PN4957.200a 8.1.1.2.3 FD-DATA.indication 65 1 8.2 LLC Layer Management SAP (LLM SAP) . 65 2 8.2.1 Layer 3 Routing Active Behavior . 65 3 8.2.2 Layer 2 Mesh Active Behavior 65 4 8.3 MAC SAP 67 5 8.3.1 Multiplexed Data Service 67 6 8.4 MAC Layer Management SAP (MLM
41、 SAP) 67 7 8.4.1 MLME-WS-ASYNC-FRAME Management Service . 68 8 8.4.1.1 MLME-WS-ASYNC-FRAME.request . 68 9 8.4.1.2 MLME-WS-ASYNC-FRAME.confirm 69 10 8.4.1.3 MLME-WS-ASYNC-FRAME.indication 69 11 9 Frame Security 71 12 9.1 AES-CCM* Key Derivation 71 13 9.1.1 Group AES Key (GAK) 71 14 9.1.2 Pairwise AES
42、 Key (PAK) 71 15 9.2 Auxiliary Security Header 72 16 9.3 CCM* Nonce and Frame Counter . 72 17 9.3.1 GTK Lifecycle 72 18 Annex A - Unicast Frame Exchange Examples . 74 19 A.1 Directed Frame Exchange 74 20 A.1.1 Unacknowledged Data 74 21 A.1.2 Acknowledged Data 75 22 A.2 Extended Directed Frame Exchan
43、ge . 75 23 A.2.1 Qualified Frame Exchange . 75 24 A.2.2 Multi-Packet Frame Exchange 76 25 A.2.3 Frame Exchange with Initial Data . 77 26 A.2.4 Bi Directional Frame Exchange . 78 27 Annex B TR-51 Channel Function 80 28 B.1 Random Number Generation 80 29 B.2 Channel Table Calculation 81 30 B.3 Calcula
44、ting the First Element and Step Size . 82 31 Annex C - Direct Hash Channel Function 84 32 C.1 Example Usage of Jenkins Hash 84 33 Annex D - Unicast / Broadcast / Discovery Example . 91 34 Annex E - Frame Counter, Frame Sequence Number, and MP-IE Transaction ID35 . 94 36 37 ANSI/TIA-PN4957.200a v Tab
45、le of Figures Figure 1 PA Frame Format . 8 1 Figure 2 PA Frame Control Format . 9 2 Figure 3 PAS Frame Format . 9 3 Figure 4 PAS Frame Control Format 10 4 Figure 5 PC Frame Format . 10 5 Figure 6 PC Frame Control Format 11 6 Figure 7 PCS Frame Format . 11 7 Figure 8 PCS Frame Control Format 11 8 Fig
46、ure 9 ULAD Format 12 9 Figure 10 ULAD Frame Control Format 13 10 Figure 11 Acknowledgement Frame Format . 14 11 Figure 12 Acknowledgement Frame Control Format 14 12 Figure 13 EAPOL Frame Format 15 13 Figure 14 EAPOL Frame Control Format 15 14 Figure 15 Wi-SUN Header IE 18 15 Figure 16 Unicast Timing
47、 IE 18 16 Figure 17 Frame Types. 19 17 Figure 18 Broadcast Slot Information Element . 19 18 Figure 19 Flow Control 20 19 Figure 20 RSL IE 21 20 Figure 21 MHDS-IE 21 21 Figure 22 Vendor Extension IE . 22 22 Figure 23 Wi-SUN Payload IE 22 23 Figure 24 Unicast Schedule IE . 23 24 Figure 25 Broadcast Sc
48、hedule IE . 23 25 Figure 26 Channel Information Fields . 24 26 Figure 27 Excluded Channel Ranges Field . 27 27 Figure 28 Channel Mask Bit Order Illustration (Transmit order left to right) . 27 28 Figure 29 Vendor Extension IE . 28 29 Figure 30 PAN IE 29 30 Figure 31 Network Name IE 29 31 Figure 32 P
49、AN Version IE . 30 32 Figure 33 GTK Hash IE . 30 33 Figure 34 MP IE 31 34 Figure 35 L2 MESH PDU Structure and Format . 33 35 Figure 36 L2 MESH PDU Header Structure and Format 34 36 Figure 37 L2 MESH PDU Header MHD-Control Field Format 34 37 Figure 38 L2 MESH PDU Header Address List Structure and Format 34 38 Figure 39 L2 MESH PDU Data Structure and Format 35 39 Figure 40 L2 MESH PDU Data Element Structure and Format 35 40 Figure 41 State Transition Diagram for DFE . 46 41 Figure 42 State Transition Diagram for EDFE 48 42 Figure 43 FAN Join States 58 43 Figure 44 Service Access Point
