IEEE 802.11-16/1208r0 Scheduling Allocation on Multi-channels in 11ay
This document discusses the scheduling and allocation of resources on multiple channels in the IEEE 802.11-16/1208r0 standard for 11ay technology. It covers topics such as channelization, bandwidth signaling, and channel aggregation in the context of 11ay operation. The document provides insights into how 11ay supports the allocation of SPs and scheduled CBAPs over multiple channels, aiming to enhance efficiency and flexibility in wireless communication systems.
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doc.: IEEE 802.11-16/1208r0 Scheduling Allocation on Multi-channels in 11ay Date: 2016-09-13 Authors: Name Affiliations Address Phone email Lei Huang Yingpei Lin Huawei Technologies Huawei Technologies lei.huang@huawei.com linyingpei@huawei.com Yi Wang Huawei Technologies yi.wang@huawei.com Yan Xin Huawei Technologies yan.xin@huawei.com Edward Au Huawei Technologies edward.ks.au@huawei.com Rob Sun Huawei Technologies rob.sun@huawei.com Submission
doc.: IEEE 802.11-16/1208r0 September 2016 Background It was agreed that 11ay shall support allocation of SP(s) and scheduled CBAP(s) over more than one channel and over a bonded channel [1]. Allocation #1 Allocation #3 CH1 Beacon/ Announce Data Data (Primary) Allocation #2 Extended Schedule element CH2 Data Data CH3 Data Submission Huawei Technologies 2
doc.: IEEE 802.11-16/1208r0 September 2016 Background In 11ad, DTI is coordinated as CBAP and SP using a schedule by PCP/AP, and the scheduling allocation can occur every BI by beacon or announce frame. Flexible channel allocation can maximize the use of all available channels, the method of allocation based on 11ad is not efficient in respect of multi-channel operation. In [2], the reserved bits in Extended Schedule element are proposed to be used for signaling the channel allocation to EDMG STAs for multi-channel operation. Submission Huawei Technologies 3
doc.: IEEE 802.11-16/1208r0 September 2016 Recap on channelization and bandwidth signaling for EDMG [3] It has been agreed that in 11ay, up to six 2.16 GHz channels as well as the overlapped bonded channels can be used. The following fields are agreed to be added in EDMG-Header-A to indicate the channel allocation 1 bit channel aggregation field 8 bits bandwidth field Channel BW Channel BW #1 #2 #3 #4 #5 #6 2.16GHz #9 #11 #13 4.32GHz #10 #12 11ay shall only allow the following combinations for channel aggregation: 2.16GHz + 2.16GHz 4.32GHz + 4.32GHz #19 #17 6.48GHz #18 #20 #25 #26 8.64GHz #27 Frequency (GHz) Submission Huawei Technologies 4
doc.: IEEE 802.11-16/1208r0 September 2016 Recap on channelization and bandwidth signaling for EDMG [3] CA (Channel Aggregation) field Set to zero for channel bonding or single 2.16GHz channel Set to one for channel aggregation BW (Bandwidth) field Bit 1-8 corresponds to channel 1-8 For each channel, the corresponding bit is set to 1 if modulated and to 0 if not modulated For example: Channel 1 Channel 2 Channel 3 Channel4 Channel5 Channel6 CA BW 0 1 0 10000000 11000000 11000000 Submission Huawei Technologies 5
doc.: IEEE 802.11-16/1208r0 September 2016 Channel allocation for 6 and 8 channels* Channel 1 Channel 2 Channel 3 Channel4 Channel5 Channel6 Channel7 Channel8 Channel 1 Channel 2 Channel 3 Channel4 Channel5 Channel6 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 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 Total 39 possible channel combinations for 6 channels and at least 6 bits needed Total 69 possible channel combinations for 8 channels and at least 7 bits needed * 8 channels are considered if 71-76 GHz are open for unlicensed use Submission Huawei Technologies 6
doc.: IEEE 802.11-16/1208r0 September 2016 Extended Schedule Element At most 6 reserved bits could be used for channel allocation in Extended Schedule Element. However, it seems the reserved bits are not enough for up to 8 channels operation. Element ID Length Allocation 1 Allocation 2 ... Allocation n Octets: 1 1 15 15 ... 15 Allocation Control BF Source AID Destination AID Allocation Start Allocation Block Duration Number of Blocks Allocation Block Period Control Octets: 2 2 1 1 4 2 1 2 B0 B3 B4 B6 B7 B8 B9 B10 B11 B12 B15 Allocation ID Allocatin Type Pseudo- static LP SC Used Truncatable Extendable PCP Active Reserved Bits: 4 3 1 1 1 1 1 4 b4 b5 b6 SP or CABP Reserved A new Information Element (IE) named EDMG Extended Schedule Element should be defined to support the scheduling allocation of multiple channels for EDMG STAs. 7 Submission Huawei Technologies
doc.: IEEE 802.11-16/1208r0 September 2016 EDMG Extended Schedule Element A channel allocation field is defined in EDMG Extended Schedule Element as the incremental signaling to the DMG Extended Schedule element for the scheduling over more than one channel. Element ID Length Allocation 1 Allocation 2 ... Allocation n Allocation Control Allocation ID Channel Allocation One Element ID reserved for 11ad could be selected to indicate this new IE. Element Element ID Element ID Extension Extensible Extended Schedule 144 N/A Yes EDMG Extended Schedule 149 N/A Yes The Allocation ID field could be used to correlate the information across the DMG Extended Schedule element and EDMG Extended Schedule element. Submission Huawei Technologies 8
doc.: IEEE 802.11-16/1208r0 September 2016 Indication of channel allocation The indication of the channel allocation defined in EDMG-Header-A could be reused for indicating the scheduling over more than one channel. Following two subfields are reused in the channel allocation field. 1 bit channel aggregation 8 bits bandwidth Submission Huawei Technologies 9
doc.: IEEE 802.11-16/1208r0 September 2016 Conclusions A new EDMG Extended Schedule Element is introduced to support the scheduling allocation of multiple channels for EDMG STAs. A channel allocation field is defined in EDMG Extended Schedule Element as the incremental signaling to the DMG Extended Schedule element for the scheduling over more than one channel. The indication of the channel allocation defined in EDMG-Header- A can be reused for indicating the scheduling over more than one channel. Submission Huawei Technologies 10
doc.: IEEE 802.11-16/1208r0 September 2016 References [1] 11-15-1358-05-00ay, Specification Framework for TGay [2] 11-16-0401-00-00ay, Multi-channel Operation in 11ay, LGE [3] 11-16-0266-03-00ay-a-compendium-of-motions-related-to-the- contents-of-the-specification-framework-document-for-tgay Submission Huawei Technologies 11
doc.: IEEE 802.11-16/1208r0 September 2016 Straw Poll 1 Do you agree to add the following text into the SFD: An EDMG Extended Schedule element shall be defined to include incremental signaling to the DMG Extended Schedule element, including channel allocation indications if allocations are scheduled over more than one channel and the Allocation ID field shall be used to correlate the information across the DMG Extended Schedule element and EDMG Extended Schedule element. Yes No Abstain Submission Huawei Technologies 12
doc.: IEEE 802.11-16/1208r0 September 2016 Straw Poll 2 Do you agree to add the following text into the SFD: A channel allocation field in the EDMG Extended Schedule element shall be defined to indicate the channel allocation for SP and CBAP in 11ay. Yes No Abstain Submission Huawei Technologies 13
doc.: IEEE 802.11-16/1208r0 September 2016 Straw Poll 3 Do you agree to add the following text into the SFD: The channel allocation field in the EDMG Extended Schedule element shall reuse the indication in EDMG-Header-A with 9 bits to indicate the channel aggregation and BW. Yes No Abstain Submission Huawei Technologies 14
