7 WLAN Access Point Identification minimum performance requirements

37.1713GPPRelease 16TSUniversal Terrestrial Radio Access (UTRA) and Evolved UTRA (E-UTRA)User Equipment (UE) performance requirements for RAT-Independent positioning enhancements

7.1 General

The minimum performance requirements specified in clause 7 apply for UEs that support WLAN positioning. This section applies to requirements for E-UTRA and NR.

The measurement requirements in this clause are statistical in nature and pertain to the 90th percentile of the distribution.

The measurement time for each requirement shall be TWLAN_meas as described in clause 4.3.2.1.2 for E-UTRA FDD, clause 4.3.2.2.3 for E-UTRA TDD, and TBD for NR. These requirements do not include nor consider delays occurring in the various signalling interfaces of the network.

7.2 WLAN Access Point Identification under Sensitivity conditions

The sensitivity conditions for a WLAN receiver are defined by IEEE in [15].

The UE shall be able to identify at least 6 WLAN Access Points if the WLAN beacons are received at the sensitivity power level. In order to test the most stringent signal levels for the beacons the Sensitivity test case is performed in AWGN channel. This test case verifies the UE capability to identify and report WLAN AP at the lowest expected signal levels but it does not evaluate measurement accuracy.

Table 7.2-1: Requirements for WLAN Access Point Identification under Sensitivity conditions

Number of WLAN APs

Signal Strength (dBm)

% of reported Access Points

6

See [15]

90

7.3 WLAN Access Point Identification under Nominal conditions

The WLAN Access Point identification under nominal conditions verifies the UE capability to identify and report WLAN APs when the WLAN signal conditions are ideal.

In this requirement AWGN channel model is used and the signal level is above the noise floor.

The minimum requirements for Nominal are shown in Table 7.3-1.

Table 7.3-1: Requirements for WLAN Access Point Identification under Nominal conditions

Number of WLAN APs

Signal Strength (dBm)

% of reported Access Points

6

-60

90

7.4 WLAN Access Point Identification under Dynamic Range conditions

The WLAN Access Point identification under dynamic range conditions verifies the UE capability to identify and report WLAN APs when the received power difference between WLAN APs is large. The power difference between APs follows the adjacent channel rejection criteria defined by IEEE in [15].

The UE shall be able to identify at least 3 WLAN AP located in 3 adjacent channels where the separation between channels is ≥ 20 MHz and the middle channel is received with high power and the side channels are received with low power.

Table 7.4-1: Requirements for WLAN Access Point Identification under Dynamic Range conditions

Number of WLAN APs

Signal Strength (dBm)

% of reported Access Points

3

See [15]

100

Annex A (normative):
Test Case Requirements