doc.: IEEE 802.11-07/2215r1
Submission
July 2007
Ganesh Venkatesan, Intel CorporationSlide 1
Proposal – Supported Radio Resource Measurement Bitmask IE
Date: 2007-07-17Name Company Address Phone email Ganesh Venkatesan Intel Corporation 2111NE 8th Ave, Hillsboro,
OR 97124 503-334-6720 [email protected]
Authors:
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doc.: IEEE 802.11-07/2215r1
Submission
July 2007
Ganesh Venkatesan, Intel CorporationSlide 2
Abstract
This document is a submission for Supported Radio Resource Measurement Bitmask Information Element. Corresponding normative text is in document 07/xxxxr0.
This proposal addresses CID #12 (LB96#25-Palm):There are too many varied procedures here. It is unlikely that implementations will implement all of the procedures. Each of the supported procedures/reports should be separately indicated and negotiated
doc.: IEEE 802.11-07/2215r1
Submission
Rationale• 802.11k is a collection of measurement tools
• Some measurements require additional resources and devices may choose not to implement them
• When a device advertises support for 802.11k (dot11RadioMeasurementEnabled is TRUE), it is not clear what RRM is supported (and enabled) and what is not supported
• A STA will have to send one or more measurement requests and analyze the received reports to comprehend what the measuring STA is capable of
• A simple method is to advertise supported measurements via a Supported RRM Bitmask IE
July 2007
Ganesh Venkatesan, Intel CorporationSlide 3
doc.: IEEE 802.11-07/2215r1
Submission
July 2007
Ganesh Venkatesan, Intel CorporationSlide 4
Supported RRM Bitmask IE
• Bits in the IE Indicate which of the RRMs are supported by the STA
• MIB attribute dot11RadioMeasurementEnabled = TRUE means – Capability Information Field:12 is set– that the STA is capable of receiving a RRM request
and respond to it• Is present in Probe Request, Probe Response,
[Re]Association Request and [Re]Association Response if dot11RadioMeasurementEnabled is TRUE
• Adds 5 octets to the above frames
doc.: IEEE 802.11-07/2215r1
Submission
Supported RRM Bitmask IE (Octet-1)
July 2007
Ganesh Venkatesan, Intel CorporationSlide 5
Bit Position Measurement Capability Enabled Annex-A Entry
0 Link Measurement 2.3, 2.4
1 Neighbor Report 2.5, 2.6, 12
2 Parallel Measurements 3.1
3 Enable bit 3.2
4 Autonomous Reports 3.3
5 Repeated Measurements 3.7
6 Measurement Pause 3.8
7 Reserved
doc.: IEEE 802.11-07/2215r1
Submission
Supported RRM Bitmask IE (Octet-2)
July 2007
Ganesh Venkatesan, Intel CorporationSlide 6
Bit Position Measurement Capability Enabled Annex-A Entry
8 Beacon Measurement (passive) 4.2
9 Beacon Measurement (passive) 4.3
10 Beacon Measurement (passive) 4.4
11 Frame Measurement 5
12 Channel Load 6
13 Noise Histogram 7
14 Statistics 8
15 LCI Measurement 9
doc.: IEEE 802.11-07/2215r1
Submission
Supported RRM Bitmask IE (Octet-3)
July 2007
Ganesh Venkatesan, Intel CorporationSlide 7
Bit Position Measurement Capability Enabled Annex-A Entry
16 Transmit Stream/Category 10
17 AP Channel Report 11
18 RCPI Measurement 13
19 RCPI with Active Scanning 14
20 RSNI 15
21 Power Capability in [Re]Association Element 17
22 MIB 18
23 Measurement Pilot Supported* 19
•This bit is interpreted in the context of the source:1. AP is the source of this IE (probe response, [re]association response): the bit implies that the AP supports
Measurement Pilot frames2. Non-AP STA is the source of the IE (probe request, [re]association request): the bit implies that the STA is capable of
processing Measurement Pilot
doc.: IEEE 802.11-07/2215r1
Submission
July 2007
Ganesh Venkatesan, Intel CorporationSlide 8
Supported RRM Bitmask IE (Octet-4)
Bit Position Measurement Capability Enabled Annex-A Entry
24
Beacon, Probe Response has :16.1Country and TPC Information
25 Power Constraint Element 16.2
26 BSS Average Access Delay 20
27 Antenna Information 21
28 Measurement Pilot Tx Information 22
29 BSS Available Admission Capacity 24
30 BSS AC Access Delay 25
31 Quiet Interval 23
doc.: IEEE 802.11-07/2215r1
Submission
Supported RRM Bitmask IE (Octet-5)
July 2007
Ganesh Venkatesan, Intel CorporationSlide 9
Bit Position Measurement Capability Enabled Notes/Annex-A Entry
32 Support Measurements in non-operating channel
33 Duration Mandatory 3.4
34-37 Maximum Measurement Duration Interpreted only if Bit-5 is zero. Value = 0 indicates that there are no limits on measurement duration. Duration in 100s of TUs?.
38 Measurement Pilot Enabled*
39 Reserved
•This bit is interpreted in the context of the source:1. AP is the source: implies that the AP is actively transmitting MPs2. Non-AP STA is the source: implies that the STA is actively using MP information in its normal operation
doc.: IEEE 802.11-07/2215r1
Submission
Supported RRM Bitmask IE (format)
July 2007
Ganesh Venkatesan, Intel CorporationSlide 10
Slide-5 Slide-6 Slide-7 Slide-8 Slide-9
Octet 1 2 3 4 5
Bit = 1: implies that the device 1. Implements support the corresponding RRM and2. The corresponding RRM is enabled in the device
Exceptions are bits 34-38.
doc.: IEEE 802.11-07/2215r1
Submission
Normative Text Changes
• Minimal change to the amendment:– Define Radio Resource Measurement Capability IE
– Add the IE to Probe Request, Probe Response, Association Request and Reassociation Request frames
– Fix Clause 11.10.5 to describe the semantics of the bits in the Capability IE:• bit set implies that the station will never respond (for the duration of
the current association) to the request with a report indicating that it is ‘incapable’ of performing the measurement.
• A STA receiving a measurement request that it advertises to support in the Capability IE can always respond with a report indicating that it is ‘refusing’ to perform the measurement.
– Fix Annex-A
July 2007
Ganesh Venkatesan, Intel CorporationSlide 11
doc.: IEEE 802.11-07/2215r1
Submission
Discussion Topics
• Measurement Pilot Transmission Interval
• Maximum Measurement Duration
July 2007
Ganesh Venkatesan, Intel CorporationSlide 12
doc.: IEEE 802.11-07/2215r1
Submission
July 2007
Ganesh Venkatesan, Intel CorporationSlide 13
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