Q-S

Quality of Service (QoS)

In networking, Quality of Service relates to the performance characteristics of a network connection: bandwidth, delay, jitter, and packet loss. For location services, QoS refers to the performance characteristics of a location provider: accuracy, precision, and time to locate. Sometimes for location, this is termed Quality of Position (QoP).

Radio Access Network (RAN)

RAN refers to the part of the cellular access network that includes the air interface, or the wireless portion of the network, and the associated control functions. The RAN includes everything up to the MSC.

Radio Frequency Identifier (RFID)

RFID is a technology using electronic tags that are similar in function to bar codes. RFID tags can be read wirelessly by a reader that is in close proximity.

received channel power indicator (RCPI)

RCPI is one method for codifying signal strength in WiFi networks.

received signal strength indicator (RSSI)

RSSI is one method for codifying signal strength in WiFi networks.

Regional Access Network Provider (RANP)

A RANP is the entity that provides wide area DSL coverage. The RANP provides logical links to an ISP in the form of ATM PVCs, L2TP tunnels, or IP routed traffic.

Remote Authentication Dial-In User Service (RADIUS)

RADIUS is an Authentication, Authorization, and Accounting protocol.

Secure User Plane Location (SUPL)

SUPL is an architecture for cellular networks that enables the acquisition of location information from mobile devices without relying on network-specific, or "control plane," signaling. SUPL primarily uses IP protocols for its signaling.

Security Assertion Markup Language (SAML)

SAML is a language for making security assertions. It is used for identity federation, or Single Sign-On (SSO), and where identity information is held by one party and required by another.

Service Set Identifier (SSID)

In WiFi, the SSID is used to allow overlapping WiFi networks to operate by distinguishing messages for different networks.

Serving Mobile Location Center (SMLC)

The node used to determine location in a GSM network.

Session Initiation Protocol (SIP)

Session Initiation Protocol is the IETF signaling protocol for VoIP, instant messaging, presence, and world domination.

Simple Authentication and Security Layer (SASL)

SASL is a protocol layer that provides a framework for authentication and data security in IP protocols.

Simple Network Management Protocol (SNMP)

SNMP is the standard protocol used to monitor and manage IP-based devices.

Simple Traversal of UDP NATs (STUN)

STUN is a simple protocol that enables a device to detect the presence of a NAT device and provide a sure method for ensuring bidirectional UDP message exchanges past the NAT device.

Stand-Alone SMLC (SAS)

The SAS is the node used to determine location in a UMTS network.

Subscriber Station (SS)

Subscriber Station is the name given to an end-point in a WiMAX network.

SUPL Enabled Terminal (SET)

In SUPL, a mobile device that supports SUPL messaging is called a SET.

SUPL Location Platform (SLP)

The SUPL Location Platform provides the network side of SUPL signaling: an interface to applications, assistance data for A-GNSS, and network-specific knowledge to provide reference locations.