Download - Location Configuration Protocols
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Location Configuration Protocols
How many do we need?
Steve Edge
Qualcomm
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OMA - Location Configuration Protocols
• Location Configuration Protocols defined by OMA
• SUPL ULP (User plane Location Protocol) is used to obtain terminal location and convey it to the terminal and/or network (H-SLP or E-SLP)
• RLP (Roaming Location Protocol) is used to request and convey location between SLPs
• MLP (Mobile Location Protocol) is used to request and convey location to a client (SUPL Agent)
• MLP and RLP are also used to support the 3GPP control plane (CP) location solution and are being introduced to support the 3GPP2 CP solution
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OMA - Location Configuration Protocols
• Protocol characteristics
• ULP is ASN.1 defined and uses TCP/IP transport and TLS
• MLP and RLP are XML defined and can be transported using various protocols (e.g. HTTP, WSP, SOAP) although only an HTTP 1.1 mapping is currently defined
• SUPL is an endorsed location solution for 3GPP IP based emergency calls and location for 3GPP I-WLAN access
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OMA - Location Configuration Protocols
• The Figure shows the roles of MLP, RLP and ULP to support SUPL 1.0
• In SUPL 2.0, a defined protocol (ILP – Internal Location Protocol) is allowed between the SLC and SPC and SUPL INIT transport from the H-SLP (or E-SLP) to the SET may also use UDP/IP and SIP Push
SET
(SUPL Enabled Terminal)
WAP PPG
SMSC/MC
MLS Application/SUPL AgentLr/LCS-z
Le/L1
SLCSPC
V-SLP(SUPL Location Platform)
POTAP (Lup) PAP (Lup)
SMS Telecommuni
cation/Tele Svc
(Lup)
Lup
SLC(SUPL
Location Center)
SPC (SUPL
Positioning Center)
undefined
undefined
MLP
RLP
ULP
Lr/LCS-z
SLC
SPC
undefined
Common end-to-end interfaces
H-SLP R-SLP
Lr/LCS-z
RLP
Lup
ULP
WAP Push
SMS
interfaces for proxy mode
Interfaces for non-proxy mode
RLP