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A1256655844VnkwR
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get/exec. add/replace. delete/exec. Hailiang Mei, H.Mei_at_tue.nl ... Exec. Logical tree for addressing purposes. In scope of DM standard! proprietary. WAP ... – PowerPoint PPT presentation
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Title: A1256655844VnkwR
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RTM in SPACE4U Design and Implementation
Hailiang Mei H.Mei_at_tue.nl
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Outline
- Design of RTM Framework
- Implementation
- Conclusion and Future Work
- Related Works (Possible RTM Approaches)
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Relation with SIM
get/exec
add/replace delete/exec
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RTM Framework inside Device
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Access Management for RTM
- Each node (object) is identified by an URI
- Each node has a set of properties
- This tree can be extended by add message or a
new installations on the device - Leaf node can be either a value or a pointer to
an executable command
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Secure Communication
- Authentication
- Decryption and encryption
- Maintain log file
- Can keep user update with latest operations
(Transparent control)
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RTM Initialization Sub-process (1)
get/exec
add/replace delete/exec
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RTM Initialization Sub-process (2)
- Consider three roles
- Initiator, doctor(TM) and patient (Terminal)
- Initiator
- Decide the patient and doctor
- Patient
- Send help message to doctor (if known)
- Or broadcast help message
- Doctor
- Check the received help message
- Can request RTM connection with patient
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Outline
- Design of RTM Framework
- Implementation
- Conclusion and Future Work
- Related Works (Possible RTM Approaches)
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Comply with ROBOCOP Framework
OS/drivers
- RCDP component is available
- Scommunication can be implemented based on
open-SSL and SyncML protocol stack - Access Manager is open
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RTM Component
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RTM SIM Integration
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Implementation plan
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Conclusion
- Secured RTM (RTM.01, mandatory)
- Management client oriented
- Healthy terminal oriented
- Component downloading due to context changing
(CAC.0102) - (Legal) Component sharing (RTM.02, optional)
- Service discovery (RTM.03, optional)
- Non-healthy terminal oriented
- Remote diagnosis (RTM.04, similar to HM.03,
Mandatory ) - Remote repair (RTM.05, similar to HM.04,
Mandatory ) - Management server oriented
- User service data survey (RTM.06, optional)
- User transparent control (RTM.07, Mandatory)
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Conclusion
- Secured RTM (RTM.01, mandatory) ?
- Management client oriented
- Healthy terminal oriented
- Component downloading due to context changing
(CAC.0102) - (Legal) Component sharing (RTM.02, optional) ?
- Service discovery (RTM.03, optional) ?
- Non-healthy terminal oriented
- Remote diagnosis (RTM.04, similar to HM.03,
Mandatory) ? - Remote repair (RTM.05, similar to HM.04,
Mandatory ) ? - Management server oriented
- User service data survey (RTM.06, optional) ?
- User transparent control (RTM.07, Mandatory) ?
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Future Work
- Formulate access control mechanism
- Some ideas borrowed from SNMP and SyncML
- Limiting the root node access rights properties
- Certain access management might be done by
interacting with users - Define communication protocol and message format
- Largely based on SyncML
- Implementing
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Questions?
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Outline
- Design of RTM Framework
- Implementation
- Conclusion and Future Work
- Related Works (Possible RTM Approaches)
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Possible RTM approaches
- Telnet/SSH
- Virtual Network Computing (VNC)
- Web server
- UPnP
- SNMP
- SyncML (Open Mobile Alliance)
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Virtual Network Computing
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Virtual Network Computing
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Web Server
- The device runs a small web server application
- A service runs on the device to generate run-time
HTML file - The remote terminal manager access the device via
the web browser and execute scripts on the device
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Web Server (example)
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UPnP
Overall stack
Control stack
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SNMP
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SNMP (example)
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SyncML DM (OMA)
OMA DM
Over the air
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SyncML DM (OMA)
OMA DM
- Server
- ltGetgt
- ltCmdIDgt4lt/CmdIDgt
- ltItemgt
- ltTargetgt
- ltLocURIgtVendor/Ring_signals/Default_ringlt/LocUR
Igt - lt/Targetgt
- lt/Itemgt
- lt/Getgt
- Client
- ltResultsgt
- ltCmdRefgt4lt/CmdRefgt
- ltCmdIDgt7lt/CmdIDgt
- ltItemgt
- ltDatagtMyOwnRinglt/Datagt
- lt/Itemgt
- lt/Resultsgt
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SyncML DM (OMA)
OMA DM
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Review of approaches
- Virtual Network Computing (VNC, open source)
(Dropped due to obvious security problems) - Web server (Dropped due to less flexibility and
limited functionalities) - UPnP based (Dropped due to less competitive with
SyncML DM) - SNMP based (Continuing as the complementary)
- SyncML DM (Continuing as the main reference)
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