Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute...

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Link Layer

Transcript of Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute...

Page 1: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Link Layer

Page 2: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Physical Layer

Link Layer

Host Controller Interface

L2CAP

Attribute Protocol

Attribute Profile

PUID

Rem

ote

Cont

rol

Prox

imity

Batt

ery

Ther

mos

tat

Hea

rt R

ate

…

Page 3: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Link Layer States

Page 4: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Discovering Devices – Passive Scanning

Page 5: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Discovering Devices – Active Scanning

Page 6: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Broadcasting Data

Page 7: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Initiierung einer Verbindung

Page 8: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Verbindung mit sehr kleiner Latenz

Page 9: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Topology

Slave

Slave

Slave

Slave

Master

Advertiser

Scanner

Advertiser

Advertiser

Advertisement

Page 10: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Topology

Slave

Slave

Slave

Slave

Initiator

Advertiser

Scanner

Advertiser

Advertiser

Connection Request

Page 11: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Topology

Slave

Slave

Slave

Slave

Master

Advertiser

Scanner

Advertiser

Advertiser

Connected

Page 12: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Paketaufbau

• Alle Pakete haben den gleichen Aufbau– Präamble – 01010101 oder 10101010– Access Adresse – korellierte 32Bit Reihenfolge– Payload – aktuelle Daten– CRC – 24 Bit CRC zur Robusten Bit Error Erkennung

• CRC wird über die Payload generiert

Page 13: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Struktur von Advertising Paketen

Page 14: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Data Packet Header

Page 15: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Bit Stream Processing

1. Daten werden verschlüsselt (optional)2. CRC wird generiert3. Bleichen (“whitened”)4. Übertragen

Page 16: Link Layer. Physical Layer Link Layer Host Controller Interface L2CAP Attribute Protocol Attribute Profile PUIDRemote ControlProximityBatteryThermostatHeart.

Link Layer Control


Semantic Analysis with Attribute Grammars Part 1grammars L-attribute grammars, S-attribute grammars, ordered attribute grammars, absolutely non-circular attribute grammars, circular

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Microsoft... · Web view2.345 Attribute st 172 2.346 Attribute street 173 2.347 Attribute streetAddress 173 2.348 Attribute structuralObjectClass 174 2.349 Attribute subClassOf 174

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Bluetooth Smart Technology - Silicon Labs · Blue Gecko Bluetooth Smart radio Link Layer API Application Attribute ... Link layer topology –slave can have multiple masters and simultanous

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Attribute Risk

Attribute Risk

Attribute Sampling

Attribute Sampling

Attribute Listing

Attribute Listing

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winprotocoldoc.blob.core.windows.net... · Web view2.623 Attribute msSFU30SearchContainer 263 2.624 Attribute msSFU30YpServers 264 2.625 Attribute msSPP-ConfigLicense 264 2.626 Attribute

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EtherMind Automotive SDK - IoT Global Network · MAP 3.0 + HS - AMP Manager / Security 3.0 + HS - AMP L2CAP / HCI LE HCI & LE L2CAP Low Energy (LE) N/W Avail HCI & L2CAP (CSA1) SDP

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