ISO/IEC 24771:2014
(Main)Information technology — Telecommunications and information exchange between systems — MAC/PHY standard for ad hoc wireless network to support QoS in an industrial work environment
Information technology — Telecommunications and information exchange between systems — MAC/PHY standard for ad hoc wireless network to support QoS in an industrial work environment
ISO/IEC 24771:2014 defines a protocol for the physical layer (PHY) and the data link layer in order to construct a reliable and high-speed data transmission network between devices on industrial sites such as factories and plants. This network specification provides a standardized protocol to provide a framework for various industrial devices to establish a simple, low-cost, energy-efficient, and high-speed network between them. In order to fulfil the service requirements of the factories and large plants, this network specification is designed to enable devices to establish a network by themselves without help of any infrastructure and reliably exchange various kinds of data, including real-time audio and video data, between them. In addition to high transmission rates, Quality of Service (QoS) for multimedia data - such as video - is also provided. The devices mentioned in ISO/IEC 24771:2014 refer to equipment that is and can be used in industrial sites such as factories and automated assembly lines. Such devices include PLC (Programmable Logic Controller), and CNC (Computerized Numerical Controller) and manufacturing robots. However, beyond such conventional devices, devices mentioned in this International Standard include personal IT devices that workers may carry and use while working, including cellular phones, personal industrial digital assistants (PDA), and laptop PCs.
Technologies de l'information — Télécommunications et échange d'information entre systèmes — Norme MAC/PHY pour un réseau ad hoc sans fil qui supporte QoS dans un environnement de travail industriel
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Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 24771
Second edition
2014-08-01
Information technology —
Telecommunications and information
exchange between systems — MAC/PHY
standard for ad hoc wireless network to
support QoS in an industrial work
environment
Technologies de l'information — Télécommunications et échange
d'information entre systèmes — Norme MAC/PHY pour un réseau ad
hoc sans fil qui supporte QoS dans un environnement de travail
industriel
Reference number
ISO/IEC 24771:2014(E)
©
ISO/IEC 2014
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ISO/IEC 24771:2014(E)
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ISO/IEC 24771:2014(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Terms and definitions, and abbreviations . 2
3.1 Terms and definitions . 2
3.2 List of Abbreviations . 3
4 Overview . 7
4.1 Characteristics . 7
4.1.1 Ad-hoc network . 7
4.1.2 Quality of Service . 7
4.1.3 Binary CDMA technology . 7
4.2 Components of network . 7
4.2.1 Station . 8
4.2.2 Resources . 8
4.3 Functional overview . 8
4.3.1 Network synchronization . 9
4.3.2 Data transmission . 9
4.3.3 Security . 10
4.3.4 Power management . 11
4.3.5 Master handover . 11
4.4 Summary of operations . 11
4.4.1 Broadcasting during the beacon period . 11
4.4.2 Random access during the contention period . 11
4.4.3 Exclusive access during the allocation period . 11
4.5 Summary of states . 12
4.5.1 Establishing the network . 12
4.5.2 Associating with the network . 12
4.5.3 Security membership and key establishment. 12
4.5.4 Data transfer . 12
4.5.5 Master handover . 12
4.5.6 Disassociating from the network . 13
4.5.7 Terminating the network . 13
5 Inter-layer interfaces . 14
5.1 Summary . 14
5.2 General format of management primitives . 14
5.2.1 MLME-GET.request and PLME-GET.request . 15
5.2.2 MLME-GET.confirm and PLME-GET.confirm . 16
5.2.3 MLME-SET.request and PLME-SET.request . 16
5.2.4 MLME-SET.confirm and PLME-SET.confirm . 16
5.3 MLME SAP . 17
5.3.1 Reset . 18
5.3.2 Scan . 19
5.3.3 Startup of network . 21
5.3.4 Synchronization . 22
5.3.5 Association . 24
5.3.6 Disassociation . 27
5.3.7 Key request. 29
5.3.8 Key distribution . 31
5.3.9 Security management . 34
5.3.10 Master handover . 38
5.3.11 Data request . 40
5.3.12 Network node data probe . 42
5.3.13 Strean creation, modification, termination . 44
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ISO/IEC 24771:2014(E)
5.3.14 Channel state. 48
5.3.15 Remote scan . 50
5.3.16 Network parameter modification . 53
5.3.17 Adjustment of power . 55
5.3.18 Power saving . 56
5.4 MAC management . 58
5.4.1 MAC PIB master group . 58
5.4.2 MAC PIB attributes group . 59
5.4.3 MAC PIB authentication group . 59
5.4.4 MAC PIB association group . 59
5.4.5 MAC PIB network security group . 60
5.5 MAC SAP . 60
5.5.1 MAC-ASYNC-DATA.request . 61
5.5.2 MAC-ASYNC-DATA.confirm . 62
5.5.3 MAC-ASYNC-DATA.indication . 62
5.5.4 MAC-ISOCH-DATA.request . 63
5.5.5 MAC-ISOCH-DATA.confirm . 63
5.5.6 MAC-ISOCH-DATA.indication . 64
5.6 PHY specification . 64
5.6.1 PD-SAP . 64
5.6.2 PLME-SAP. 74
5.6.3 Physical layer enumerated description . 79
6 Mac frame format . 81
6.1 Overview . 81
6.2 General format of MAC frames . 81
6.2.1 Frame header . 82
6.2.2 Frame body . 85
6.3 Frame formats . 86
6.3.1 Beacon . 86
6.3.2 Acknowledgement . 88
6.3.3 Command . 89
6.3.4 Data (stream or non-stream) . 90
6.3.5 RTS (Request To Send) . 90
6.3.6 CTS (Clear To Send) . 91
6.4 Information block . 91
6.4.1 Station UID . 92
6.4.2 Station name. 92
6.4.3 Station type. 92
6.4.4 Network synchronization . 92
6.4.5 Capabilities . 93
6.4.6 Maximum supported time slot . 93
6.4.7 Maximum transmit power . 94
6.4.8 Resource allocation . 94
6.4.9 New master notification . 95
6.4.10 Sleep state notification . 95
6.4.11 Vendor specific . 95
6.5 Command block . 95
6.5.1 Network management . 97
6.5.2 Stream management . 99
6.5.3 Power management . 103
6.5.4 Key management . 104
6.5.5 Security management . 105
6.5.6 Vendor specific . 105
6.5.7 Other . 106
7 MAC feature description . 110
7.1 Network formation and association . 110
7.1.1 Channel scanning . 110
7.1.2 Network ID . 111
7.1.3 Association . 111
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ISO/IEC 24771:2014(E)
7.1.4 Disassociation . 111
7.1.5 Master handover . 112
7.2 Media access . 112
7.2.1 Code assignment . 112
7.2.2 Inter-frame space . 112
7.2.3 Access during the contention period . 113
7.2.4 Access during the allocation period . 113
7.3 Synchronization . 114
7.3.1 Superframe synchronization . 114
7.3.2 Beacon generation . 115
7.3.3 Beacon reception . 115
7.3.4 Synchronization . 115
7.4 Resource allocation . 115
7.4.1 Transmission of synchronous data . 115
7.4.2 Asynchronous data transmission . 117
7.5 Fragmentation and defragmentation . 117
7.6 Acknowledgement and retransmission . 118
7.6.1 No acknowledgement . 118
7.6.2 Immediate acknowledgement . 118
7.6.3 Delayed acknowledgement . 118
7.6.4 Implicit acknowledgement . 118
7.6.5 Retransmission . 118
7.7 Power saving . 119
7.7.1 Saving power in a connected state . 119
7.7.2 Sleep state . 119
7.8 Dynamic channel management . 119
7.8.1 Channel state probe . 119
7.8.2 Remote Channel state probe . 119
7.8.3 Frequency channel change . 120
7.9 MAC parameters . 120
8 Security . 121
8.1 Security mechanisms . 121
8.1.1 Security membership and key establishment. 121
8.1.2 Key transport . 121
8.1.3 Data encryption . 121
8.1.4 Data integrity . 121
8.1.5 Beacon integrity protection . 122
8.1.6 Command integrity protection. 122
8.1.7 Freshness protection . 122
8.2 Security modes . 122
8.2.1 Security mode 0 . 122
8.2.2 Security mode 1 . 122
8.2.3 Security mode 2 . 123
8.3 Security Support . 123
8.3.1 Changes in the network group data key . 123
8.3.2 Joining a secure network . 123
8.3.3 Secure frame generation . 124
8.3.4 Secure frame reception . 124
8.3.5 Retransmission detect . 125
8.3.6 Key selection . 125
8.4 Key management protocol . 128
8.4.1 Key distribution protocol . 128
8.4.2 Key request protocol . 130
8.5 CCM mode . 131
8.5.1 Overview . 131
8.5.2 Nonce . 131
8.5.3 Inputs . 132
9 General specifications . 135
9.1 General requirements . 135
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ISO/IEC 24771:2014(E)
9.1.1 Operating frequency range . 135
9.1.2 PHY layer timing . 136
9.1.3 Receive-to-transmit turnaround time . 137
9.1.4 Transmit-to-receive turnaround time . 137
9.1.5 Channel switch time . 137
9.1.6 Maximum frame size . 137
9.2 PHY Protocol Data Unit (PDU) format . 137
9.2.1 General format . 137
9.2.2 Preamble . 138
9.2.3 PHY Header. 139
9.2.4 PHY payload . 140
9.3 Modulation and coding . 141
9.3.1 Spreading code . 141
9.3.2 QPSK modulation . 142
9.3.3 Constant envelope coding .
...
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