Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 1 [Mixed Resource Composition] IEEE P Wireless RANs Date: Authors: Notice: This document has been prepared to assist IEEE 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 grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chairhttp://standards.ieee.org/guides/bylaws/sb-bylaws.pdf Carl R. StevensonCarl R. Stevenson as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE Working Group. If you have questions, contact the IEEE Patent Committee Administrator at

Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 2 Summary This presentation shows the concrete structure of mixed resource composition for the WRAN system. Mixed resource composition is the subchannelization which is composed of both adjacent 1) and distributed carrier permutation on the 6MHz TV channel by using the mixed band. This scheme is more flexible and efficient than Band AMC in and suitable for the fixed WRAN system. 1) with the transmission power reduction of 10dB

Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 3 Contents Band AMC in Opportunity for adjacent subcarrier in WRAN Structure of Mixed Band Mixed Resource Composition Simulation Conclusion

Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 4 Band AMC in –Subframe is divided into a kind of diversity subchannel and band-AMC. –Being inefficient if the number of bands required from subscriber is less than the available all bands in AMC Zone –Unable to control the transmission power between diversity subchannel and band-AMC

Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 5 Opportunity for adjacent carrier in WRAN –AMC subchannel is used for CPEs which can communicate with the BS by using the transmission power reducing 10dB from 4W. –If need, W can protect the incumbent user in the adjacent 6MHz channel : If Y is 0.5MHz  X= 5MHz, W are not used for adjacent subcarrier

Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 6 Structure of Mixed Band –Mixed band is composed of 28 subcarriers (2 bins). –BS allocates the adjacent subcarriers with 14 subcarriers on the requested mixed band to CPE requesting the AMC subchannel. –Remainder subcarriers are used for other CPEs using the diversity subchannel.

Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 7 Mixed Resource Composition –There are 60 bands. –Some CPEs report the channel information for AMC subchannel –BS allocates the both Diversity subchannel and AMC subchannel with mixed band to each CPE –Be able to maintain the diversity gain for CPEs using the diversity subchannel (green circle) –Be able to allocate the pure AMC band between two mixed bands

Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 8 Mixed Resource Composition Subchannelization –AMC Subchannel Composed of adjacent subcarriers(14) on the 4 mixed bands 14 * 4 = 56(Data : 48, Pilot : 8) Types of AMC subchannel : 4 x 1, 2 x 2 or 1 x 4 [band by sym.] –Diversity Subchannel Aggregating subcarriers(56) from both the remainder subcarriers in the mixed bands and pure diversity bands Using the original permutation rule for diversity subchannel with reducing the total number of bin

Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 9 Simulation condition Assumption and Condition for Simulation –Comparison between Band-AMC(in ) and Mixed Resource Composition. –Both Band-AMC and Mixed Resource Composition have the same ratio of diversity to AMC subchannel in the DS. –Users for the AMC subchannel select the bands where SNR is the maximum. –Users for Diversity subchannel use the average SNR. In case of Mixed Resource Composition, we use the average SNR of remainder subcarriers after selection of bands –Assumption and Condition # of CPE : 12 (Diversity : 6, AMC : 6) # of OFDMA symbol in DS subframe : 10 Ratio of symbol for Band-AMC = Ratio of band for Mixed  [D : A] = 7:3 Channel Model : WRAN Channel Model B

Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 10 Performance

Submission doc.:IEEE /0140r0 Mar Chang-Joo Kim, ETRI Slide 11 Conclusions Mixed resource composition is suitable for WRAN system which has the large cell coverage and the fixed channel environment. It can efficiently and flexibly allocate the resource to both the CPEs close to the BS and the CPEs far from the BS. It can control the transmission power between AMC subchannel and diversity subchannel in the DS.