Shusaku Shimada1

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Consultation Summary of

Japanese 920MHz Band Rules and ConditionsDate: 2011-7-25

Name Affiliations Address Phone email

Shusaku Shimada Yokogawa Co. 2-9-32 Nakacho

Musashino-shi, Tokyo 180-8750 Japan

+81-422-52-5558 shusaku@ieeee.org

Authors:

Note: This document is identical to Doc-11-11/0974r1 except for using ppt file format.

Shusaku Shimada2

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Back Ground Following up the recent spectrum reform of entire UHF frequency usage in Japan due to termination of analog TV broadcasting service, current 950MHz band shared by WSN (wireless sensor network) and RFID is going to move to so called 920MHz band. As new 920MHz band is substantially expanded in bandwidth and still partially shared by RFID, the rules and conditions to be fulfilled by WSN devices are changed. The corresponding consultation has been issued by telecommunication council of MIC* in June, and the actual law ordinances are expected to be in effect by July 2012. In addition, ARIB T-96 standard is going to be revised as well, which recommends a series of provisions prescribing additional rules concerning WSN on mandated regulatory ordinances. This submission summarizes mainly with regard to MIC* consultation.

* MIC : Ministry of internal affair and Communication

Shusaku Shimada3

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Frequency band and Element channel width

Shusaku Shimada4

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

WSN Frequency band and Channelization

Frequency Band : 915.9MHz - 929.7MHz

200kHz width element channel : 915.9 - 928.1MHz ( 61 channels )

100kHz width element channel : 928.10 - 929.70 ( 16 channels )

Shared region with Passive RFID system : 915.9 - 923.5MHz

Limited channel usages depending on each Tx power level category.

Shusaku Shimada5

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

920MHzBand Channel Plan of RFID/WSN Systems ( Based on Consultation )

B B B B B B

ch 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76

915.6

91

5.8

916.0

91

6.2

916.4

91

6.6

916.8

91

7.0

917.2

91

7.4

917.6

91

7.8

918.0

91

8.2

918.4

91

8.6

918.8

91

9.0

919.2

91

9.4

919.6

91

9.8

920.0

92

0.2

920.4

92

0.6

920.8

92

1.0

921.2

92

1.4

921.6

92

1.8

922.0

92

2.2

922.4

92

2.6

922.8

92

3.0

923.2

92

3.4

923.6

92

3.8

924.0

92

4.2

924.4

92

4.6

924.8

92

5.0

925.2

92

5.4

925.6

92

5.8

926.0

92

6.2

926.4

92

6.6

926.8

92

7.0

927.2

92

7.4

927.6

92

7.8

928.0

92

8.15

928.2

5 92

8.35

928.4

5 92

8.55

928.6

5 92

8.75

928.8

5 92

8.95

929.0

5 92

9.15

929.2

5 92

9.35

929.4

5 92

9.55

C C C C C D D D D D D D D D D D D D D D D D D A A A A A A A A A ○ ○ ○ ○ ○ ◎ ◎ ◎ ◎ ◎ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Passive RFID Systems

Active Low Power Systems including Active RFID & WSN

１WPassiveID１W・LBTPassiveID250mW

PassiveID10mW

PassiveID

CenterFrequency

1mWActiveWS

N20mWActiveWS

N250mWActiveWS

N

Fixed Licensed （1W Licensed）

Fixed Light License（1W registerd）

Specific Low Power（250ｍW）

Specific Low Power（10ｍW)

Data Return Ch. of Miller Sub- carrier Systems

Specific Low Power（250ｍW）

Specific Low Power（20ｍW)

Specific Low Power（1ｍW） Arib Std. defines additional usage condition and restriction of A,B,C,D channels

・A(24ch－32ch ）：are supposed to use for passive ID with longer LBT period in ARIB Std. ・B（33ch-38ch ）：are supposed to use for active RFID and WSN with shorter LBT period in ARIB Std. ・C（1ch-5ch ）：are supposed to use for both data return Ch. of MS passive ID and active systems which reqiure World Wide compativility including international logistic applications. ・D（6ch-23ch ）：are supposed to primarily use for data return Ch. of passive ID systems in ARIB Std.

200kHz Element channel 100kHz Element channel

Shusaku Shimada6

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

ch 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61

916.0

91

6.2

916.4

91

6.6

916.8

91

7.0

917.2

91

7.4

917.6

91

7.8

918.0

91

8.2

918.4

91

8.6

918.8

91

9.0

919.2

91

9.4

919.6

91

9.8

920.0

92

0.2

920.4

92

0.6

920.8

92

1.0

921.2

92

1.4

921.6

92

1.8

922.0

92

2.2

922.4

92

2.6

922.8

92

3.0

923.2

92

3.4

923.6

92

3.8

924.0

92

4.2

924.4

92

4.6

924.8

92

5.0

925.2

92

5.4

925.6

92

5.8

926.0

92

6.2

926.4

92

6.6

926.8

92

7.0

927.2

92

7.4

927.6

92

7.8

928.0

C C C C C D D D D D D D D D D D D D D D D D D A A A A A A A A A ○ ○ ○ ○ ○ ◎ ◎ ◎ ◎ ◎

Active Low Power Systems including Active RFID & WSN

CenterFrequency

1mWActiveWS

N20mWActiveWS

N250mWActiveWS

N

Specific Low Power（250ｍW）

Specific Low Power（20ｍW)

Specific Low Power（1ｍW） Arib Std. defines additional usage condition and restriction of A,B,C,D channels

・A(24ch－32ch ）：are supposed to use for passive ID with longer LBT period in ARIB Std. ・B（33ch-38ch ）：are supposed to use for active RFID and WSN with shorter LBT period in ARIB Std. ・C（1ch-5ch ）：are supposed to use for both data return Ch. of MS passive ID and active systems which reqiure World Wide compativility including international logistic applications. ・D（6ch-23ch ）：are supposed to primarily use for data return Ch. of passive ID systems in ARIB Std.

62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77

928.1

5

928.2

5

928.3

5

928.4

5

928.5

5

928.6

5

928.7

5

928.8

5

928.9

5

929.0

5

929.1

5

929.2

5

929.3

5

929.4

5

929.5

5

929.6

5

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

920MHzBand Channel Plan of WSN Systems ( Based on Consultation )

200kHz Element channel

100kHz Element channel

Shusaku Shimada7

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

System (WSN) Category Category ( Based on maximum Tx Power )

1mW (3dBm eirp) no more than 1mW(0dBm) Tx power: 915.9-928.1MHz, 61x 200kHz element channels (Recommended use by ARIB T-96 is 915.9-916.9MHz and 920.5-928.1MHz and 928.1-929.7MHz)

20mW (16dBm eirp) no more than 20mW(13dBm) Tx power: 920.5-928.1MHz, 38x 200kHz elementary channels (Ditto is 922.3-928.1MHz)

250mW (27dBm eirp) no more than 250mW(24dBm) Tx power: 920.5-923.5MHz, 15x 200kHz elementary channels (Ditto is 922.3-923.5MHz)

Data Transmission

Modulation Scheme Not specified, i.e. any modulation can be used.

Bundled usage of Element channels ( ~ max. occupied signal width )

Maximum number of Element channels Up to 5 channels, (1MHzBWmax.)c.f. 0.5MHzBWmax. for 928.1-929.7MHz

Shusaku Shimada8

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Conditions & Rules in term of Tx Control

Shusaku Shimada9

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Tx Control with regard to System Conditions LDC

1mW category 3.6s per 1 hour ( or Less than 0.1%)

20mW or 250mW Category

360s per 1 hour ( or Less than 10%)

not required (LBT>5ms) within 4s max. Tx followed by 50ms idle at 920.5MHz-923.5MHz.

Max. Transmission Duration

1mW Category 100ms for 200KHz element channels, 50ms for 100KHz cases.

20mW or 250mW Category

400ms (LBT>128us) 4s (LBT>5ms)

(ARIB T-96 recommends 200ms or 100ms in some conditions) 4s (LBT>5ms) is only permitted for 920.5MHz-923.5MHz.

Idle period after Transmission 1mW Category 100ms for 200KHz element channels, 50ms for 100KHz cases.

20mW or 250mW Category

2ms (LBT>128us) 50ms (LBT > 5ms)

(not required if Tx duration was no more than 6ms) 50ms (LBT>5ms) is only valid for 920.5MHz-923.5MHz.

LBT requirement

1mW Category not required

20mW or 250mW Category

listen more than 128us -80dBm (ED Level) regardless of bundled number of channels. LBT>5ms is only valid for 920.5MHz-923.5MHz. listen more than 5ms

( ARIB std. T-96 recommends a few conditions in addition to law ordinance as above. )

Shusaku Shimada10

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Exception of LBT

Data/Request/QueryLBT(Clear)

Response(Ack)

Node A

Node B

Within 50ms

Exemption of LBT

time

time

(Only Same Frequency Channel)

Short Response including Ack frame following Data, Request and query needs no LBT, if Tx completes within 50ms on same channel.

Short Response don't have to be taken account into LDC. e.g. 360s per 1hour limit is not affected by Ack response.

( ARIB std. T-96 recommends a few additional conditions over law ordinance above. )

Shusaku Shimada11

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Adjacent Leakage Power & Spurious Emission

Shusaku Shimada12

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Adjacent Leakage & Spurious EmissionAdjacent Leakage & Spurious Emission

Maximum Spurious Emission

710 917 919 921 930 940

(MHz)

-36dBm/100kHz

-65(-55dBm/MHz)

-55

-39

-61

MCA CellularLTE

-55

-36

-29 ( 20mW < P =< 250mW)

-65

(Antenna Gain must be less than 3dBi.)

電子タグシステムWSN

Provision of Channel Mask

SpurEmi dBm/100kHz fc fc+(N+1)*100kHz

Adjacent Channel Leakage

Category Max. Leakage

200kHz adjacent element channel

(output power: P) (dBm/200kHz)

P =< 250mW -5dBm

P =< 20mW -15dBm

P =< 1mW -26dBmFigure below

1215

-55

-45dBm/MHz-36

920.3MHz 924.3MHz

Adjacent Channel Leakage

Right Table

-36 -36 ( P =< 20mW )

915900 960

Shusaku Shimada13

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Frequency Region (at Tx output to Antenna )

Max. Spurious Emission

(Average Power)

Reference Bandwidth

Lower than or equal to 710MHz -36dBm 100kHz

Higher than 710MHz and up to 900MHz -55dBm 1MHz

Higher than 900MHz and up to 915MHz -55dBm 100kHz

Higher than 915MHz and up to 920.3MHz * -36dBm 100kHz

Higher than 920.3MHz and up to 924.3MHz *(except for the region within (200+100 n) KHz; n=number of bundled element channels)

-29dBm : (Tx power >20mW)

-36dBm : ( otherwise )

100kHz

Higher than 924.3MHz and up to 928.1MHz * (except for the region within (200+100 n) KHz; n=number of bundled element channels) -36dBm 100kHz

Higher than 928.1MHz and up to 930MHz (except for the region within (100+50 n) KHz; n=number of bundled element channels) -36dBm 100kHz

Higher than 930MHz and up to 1GHz -55dBm 100kHz

Higher than 1GHz and up to 1.215GHz -45dBm 1MHz

Beyond 1.215GHz -30dBm 1MHz

Allowed Spurious Emission

Emission from enclosure has to be less than the corresponding EIRP value with above value. Max. Antenna Gain is 3dBi.

Shusaku Shimada14

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Frequency Region (at Tx output to Antenna )

Max. Spurious Emission

(Average Power)

Reference Bandwidth

Lower than or equal to 710MHz -54dBm 100kHz

Higher than 710MHz and up to 900MHz -55dBm 1MHz

Higher than 900MHz and up to 915MHz -55dBm 100kHz

Higher than 915MHz and up to 930MHz

-54dBm 100kHz

Higher than 930MHz and up to 1GHz -55dBm 100kHz

Beyond 1GHz -47dBm 1MHz

Parasitic Emission of Rx

- Be measured at the condition that Rx operation has to be activated, while Tx circuitry may be disabled. - A measurement using temporal antenna terminal is allowed in both case of measurements in term of Tx spurious emission and Rx parasitic emission, provided that the loss difference between real antenna and temporal terminal has to be compensated.

Shusaku Shimada15

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Typical Signal Masks

Shusaku Shimada16

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Typical Signal Mask

Center Frequency

-40

-50

-20

-30

-10

0

200KHz (200 n) KHz 200KHz

< 1mW Category (915.9 ~ 928.1MHz) >

-36dBm/100KHz(915 ~ 930MHz)

Spurious Emission

-26dBm/200KHz(915.9-928.1MHz)Upper Adjacent Leakage Emission

-26dBm/200KHz (915.9-928.1MHz)Lower Adjacent Leakage Emission

0dBm/(200 n) KHzAv. Signal Power

Shusaku Shimada17

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Typical Signal Mask

Center Frequency

-40

-50

-20

-30

-10

0

100KHz (100 n) KHz 100KHz

< 1mW Category (928.1 ~ 929.7MHz) >

-36dBm/100KHz(915 ~ 930MHz)

Spurious Emission

-26dBm/100KHz(928.1-929.7MHz)Upper Adjacent Leakage Emission

-26dBm/100kHz (928.1-929.7MHz)Lower Adjacent Leakage Emission

0dBm/(100 n) KHzAv. Signal Power

Shusaku Shimada18

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Typical Signal Mask

20

fc( )中心周波数

-40

-20

10

-50

0

-10

-30

Center Frequency

200KHz (200 n) KHz 200KHz

< 20mW Category (920.5 ~ 928.1MHz) >

-36dBm/100KHz(915 ~ 930MHz)

Spurious Emission

-15dBm/200KHzLower Adjacent Leakage Emission

13dBm/(200 n) KHzAv. Signal Power

-15dBm/200KHzUpper Adjacent Leakage Emission

Shusaku Shimada19

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Typical Signal Mask

-20

-30

-50

fc( )中心周波数

10

20

30

0

-10

-40

Center Frequency

200KHz (200 n) KHz 200KHz

< 250mW Category (920.5 ~ 923.5MHz) >

-29dBm/100KHz(915 ~ 930MHz)

Spurious Emission

-5dBm/200KHzLower Adjacent Leakage Emission

24dBm/(200 n) KHzAv. Signal Power

-5dBm/200KHzUpper Adjacent Leakage Emission

Shusaku Shimada20

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Miscellaneous

Shusaku Shimada21

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

Frequency Tolerance Within ±20 ppm

Tx power Tolerance Between +20% and -80% of the designed power level

Antenna Gain +3dBi max. with max. Tx power allowed. Higher gain antenna is allowed to use, provided that EIRP level is kept below than that with max. Tx power using +3dBi antenna.

Permitted Communication Simplex (with or without Rx), Duplex (FDD, CDD, etc.), half Duplex (TDD), Broadcast and Multicast.

Shusaku Shimada22

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

< Reference >

Consultation Report by

mobile communication committee of

Information Communication Technology sub-party of

Telecommunication Council.

Issued on Jun. 24, 2011.

- Press Release of MIC (written in Japanese) < http://www.soumu.go.jp/menu_news/s-news/0kiban14_01000036.html >

- Summary Table of 920MHz RFID/WSN systems (written in Japanese) < http://www.soumu.go.jp/main_content/000119517.pdf >

- Consultation Report for public comments (written in Japanese ) < http://www.soumu.go.jp/main_content/000113160.pdf >

Note : ARIB std. T-96 is supposed to be issued in English in future, which will be including the law ordinances and ARIB recommendations together.

Shusaku Shimada23

doc.: IEEE 802.11-11/0974r2

Submission

July 2011

End