doc.: IEEE c Submission January 2008 ETRISlide 1 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Fast Uplink Channel Allocation] Date Submitted: [January 14, 2008] Source: [Yongsun Kim, Wooyong Lee, Jinkyeong Kim, Kyeongpyo Kim, Hyoungjin Kwon] Company: [Electronics and Telecommunications Research Institute (ETRI)] Address: [ETRI, 161 Gajeong-dong, Yuseong-gu, Daejeon, , Republic of Korea] Voice: [], FAX: [], Re: [] Abstract: [Description on Fast Uplink Channel Allocation scheme] Purpose: [To be considered in IEEE c standard] Notice: This document has been prepared to assist the IEEE P It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P

doc.: IEEE c Submission January 2008 ETRISlide 2 Video streaming is asymmetric point-to-point application in that the source (DVD player, set top box and so on) tends to transmit video streaming data to the sink (flat TV) one-sidedly. In this case, it is difficult for the sink to transmit control signals, ACK or user data to the sources immediately. Vertical blanking interval (VBI) is long enough but not frequently exists while horizontal blanking interval (HBI) is too short but frequently exists. For immediate uplink usage, we want to propose fast uplink channel allocation scheme to use aggregated HBIs. For example, the figure below shows one HBI is not enough for RF switching from TX to RX or RX to TX. (Source) (Sink) Why Fast Uplink Channel Allocation?

doc.: IEEE c Submission January 2008 ETRISlide 3 FormatV FreqHRESVRESDE_CNTDE_LINRate 24bitRate 20bit Hsync (sec) Vsync (sec) 640x E x E x E x E x E x E x E x E x E x E x E x E x E i / E / p E p E i / E / p E p E Various Hsync and Vsync

doc.: IEEE c Submission January 2008 ETRISlide 4 In general mode of video transmission systems, horizontal blanking interval and active video line come alternatively. In aggregation mode, we aggregate numbers of horizontal blanking intervals (HBI) and active lines (AL). (Before combined AL) (After combined AL) Transmission in video signals

doc.: IEEE c Submission January 2008 ETRISlide 5 Position of combined HBI “0” : Before combined AL/ “1” : After combined AL Attribute of HBI “0” : No auxiliary data/ “1” : Auxiliary data Maximum number of aggregated HBI : 8 FUCA MAP and Control Frame Format Octets: 224 Next Total Frame Length Sequence Number Fuca Map FUCA MAP Format FUCA Control Frame Format

doc.: IEEE c Submission January 2008 ETRISlide 6

doc.: IEEE c Submission January 2008 ETRISlide 7

doc.: IEEE c Submission January 2008 ETRISlide 8 In case, there is no auxiliary data in any horizontal blanking intervals. We can use combined HBI for transmitting uplink control/data. Pos : 0 Number of Aggregated Data : 5 HBI OA : E1-E2-E3-E4-E5 Example of Aggregation Mode (1/4)

doc.: IEEE c Submission January 2008 ETRISlide 9 In case, there is one horizontal blanking interval that has auxiliary data. We can also use combined HBI for transmitting uplink control/data. Pos : 0 Number of Aggregated Data : 5 HBI OA : E1-E2-E4-E5-A3 Example of Aggregation Mode (2/4)

doc.: IEEE c Submission January 2008 ETRISlide 10 It is same to last slide but combined HBI comes after combined AL. We can also use combined HBI for transmitting uplink control/data. Pos : 1 Number of Aggregated Data : 5 HBI OA : A3-E1-E2-E4-E5 Example of Aggregation Mode (3/4)

doc.: IEEE c Submission January 2008 ETRISlide 11 In case, there are three horizontal blanking intervals that have auxiliary data. So we can not use combined HBI for transmitting uplink control/data because that is too short. In case of 1080p Pos : 0 Number of Aggregated Data : 5 HBI OA : E1-E4-A2-A3-A5 Example of Aggregation Mode (4/4)

doc.: IEEE c Submission January 2008 ETRISlide 12 Generally, PHY transmits MAC MPDU with Preamble. If we do not aggregate auxiliary data together, we need to transmit 3 PHY frames as shown below. If we do aggregate auxiliary data together, we transmit only one PHY frame as shown below. So the transmission efficiency is increased compared to the case above. Benefit of PHY Transmission Using Aggregation