Transport Issues
Personal Health Device WGPersonal Health Device WG
11073 Protocol Stack11073 Protocol Stack
LinklayerTCP/IP
Transport Adaptation Layer
Application Profiles
Application Layer
Bluetooth802.15.4
ZigbeeRS232
Services
Proprietary
Wireless
802.15.1 Protocol Stack802.15.1 Protocol Stack
Logical Link Control Adaptation Protocol (L2CAP)DataLinklayer
Physicallayer
Applicationlayer
Link manager
Physical radio
Baseband
Audio Control
Application Profiles
Middlewarelayer
RFComm Telephony Service
discovery
OtherLLC
CommunicationCommunication
Link
Transport
Adaptation
Layer
Application
Profiles
Application
Layer
Link
Transport
Adaptation
Layer
Application
Profiles
Application
Layer
Simple point to point link
Communication 1Communication 1
Link
Transport
Adaptation
Layer
Application
Profiles
Application
Layer
Link
Transport
Adaptation
Layer
Application
Profiles
Application
Layer
Link
Bridge
Link
Bridging identical point to point links
Communication 2Communication 2
Link
Transport
Adaptation
Layer
Application
Profiles
Application
Layer
Link
Transport
Adaptation
Layer
Application
Profiles
Application
Layer
Link
Transport
Adaptation
Layer
Relay
Transport
Adaptation
Layer
Link
Relaying dissimilar point to point links
Communication 3Communication 3
Link
Transport
Adaptation
Layer
Application
Profiles
Application
Layer
Link
Transport
Adaptation
Layer
Application
Profiles
Application
Layer
Link
Transport
Adaptation
Layer
Filter
Transport
Adaptation
Layer
Link
Appl Appl
Spanning dissimilar technologies perhaps with filter
•Error control•Flow control•ACK vs ACKless
Transport Layer CharacteristicsTransport Layer Characteristics
•Error control•Flow control•Serial vs packet•1 message per packet•Packet size•Connection oriented vs connectionless•Device discovery•Topology (Peer, Piconet, point to point)
Link Layer CharacteristicsLink Layer Characteristics