Doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion CX-CBP in 3.65GHz – Simulation results for Scenario C Notice: This document has been prepared.

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion CX-CBP in 3.65GHz – Simulation results for Scenario C Notice: This document has been prepared to assist IEEE 802.19. 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 802.19. 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 TAG 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 Chair 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 802.19 TAG. If you have questions, contact the IEEE Patent Committee Administrator at.http:// ieee802.org/guides/bylaws/sb-bylaws.pdfpatcom@ieee.org Date: 06.03.2009 Authors:

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion 802.16h CX-CBP – Frame structure CX-Frame structure is shown below:

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion CX-CBP General features Equal operational time assigned to each technology –10ms for each CXCBI and CXCSBI Operation during CXCBI –Scheduled transmit opportunities –Listen-before-talk –Contention window and quiet periods –Longer slots are defined for 802.16h as compared with 802.11y Priority is given to 802.11y –Logarithmic back-off

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Synchronization CX-Frame is synchronized with GPS-like time source –802.16h-based systems are using CXSBI in a synchronized mode Sync of 802.11y with CXCBI is not mandated Two operational modes –Sync. CX-CBP The 802.11 AP limits the 802.11y operation to CXCBI –See Annex in “Parameters for simulation of Wireless Coexistence in the US 3.65GHz band” document –Un-sync. CX-CBP No limitation is imposed

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Parameters Based on: IEEE 802.19-07/11r16, Parameters for simulation of Wireless Coexistence in the US 3.65GHz band –Scenario A “Outdoor-to-outdoor” –Scenario C “Outdoor-to-indoor” Offered load for each system: –In order to find the maximal capacity for each system, simulations were performed in no-interference state, and overloading each system. –The maximum throughputs derived were (for 5 MHz channel): Scenario A –802.16 DL: 7.2 Mbps –802.16 UL: 4 Mbps –802.11 overall: 8 Mbps Scenario C –802.16 DL: 2.4 Mbps –802.16 UL: 2.2 Mbps –802.11 overall: 3.1 Mbps

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Parameters (cont.) The offered load in the interference simulation for each system was based on these relations between the maximum achievable loads, modified according to the required total load For scenario C, the mandatory load of 9.6 Mbps is more than 100% of the achievable load (7.7 Mbps)

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Legend Abbreviations NCX: No Coexistence Protocol –Reference for 802.11y / 802.16h operation SCX: Sync CX-CBP. Synchronized Coordinated Contention-Based Protocol UCX: Unsync CX-CBP. Unsynchronized Coordinated Contention-Based Protocol NI: No Interference –Reference for max. performance NL: Only control elements are transmitted by the interfering system –802.16h CX-CBP: according to defined operation

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Cell sizes (Scenario A) Cell size for each system was chosen to be the minimum between its DL and UL ranges.

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Cell sizes (Scenario C) Cell size for each system was chosen to be the minimum between its DL and UL ranges.

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Simulation #1 Scenario C (outdoor to indoor) 10 users per system Total offered load for both systems: 4.8 Mbps –802.16 offered load of 2.9 Mbps 150 Kbps DL per user 137 Kbps UL per user –802.11 offered load of 1.9 Mbps 129 Kbps DL per user 64 Kbps UL per user 5 MHz bandwidth Unlimited retransmissions in 802.11 and 802.16

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Hidden Node Probabilities (Mean)

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Hidden Node Probabilities (10 th percentile)

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Hidden Node Probabilities (Median)

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Mean Throughputs

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion 10 th Percentile Throughputs

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Median Throughputs

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Mean Latency

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Median Latency

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion 90 th Percentile Latency

doc.: IEEE 19-09-0004-01-0000 Submission March 2009 Alvarion Simulation #2 Scenario C (outdoor to indoor) 10 users per system Total offered load for both systems: 2.4 Mbps –802.16 offered load of 1.4 Mbps 75 Kbps DL per user 68 Kbps UL per user –802.11 offered load of 1 Mbps 64 Kbps DL per user 32 Kbps UL per user 5 MHz bandwidth Unlimited retransmissions in 802.11 and 802.16