1. Requirements projected by Operators’ sub group of Broadband Wireless Consortium of India (BWCI) and Impacts on Uplink Multiple Access Choice
IEEE Presentation Submission Template (Rev. 9)
Document Number:
IEEE C802.16m-08_254r1
Date Submitted:
Source:
Kiran Kuchi, J Klutto Milleth
CEWiT
India
Venue:
Orlando, USA
The presentation accompanies a selected items from the base contribution, IEEE C802.16m-07_178
Purpose:
To facilitate the choice of uplink multiple access during the IEEE meeting in Orlando, USA
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2. Requirements projected by Operators’ sub group of Broadband Wireless Consortium of India (BWCI) and Impacts to Uplink Multiple Access
Presented by
Kiran Kuchi
CEWiT

3. Indian Scenario
Based on the unified views expressed by the various operators of India
Broadband Wireless Consortium of India (BWCI)
a strategic initiative of Centre of Excellence in Wireless Technology (CEWiT), India
Requirements arrived based on the operators’ previous experience in providing cellular telephone services in India.
The operators in India are expected to
serve about of 900 subscribers/cell that covers different market segments
the cell radius varying between 100m and 20 Km
At least 85% of the subscribers will be nomadic and indoors
Basic service must support voice which is very much essential
BWA at the right price point can lead to explosive growth
Requires the number of base stations to be kept to minimum to cover certain geographical area

4. Market Segmentation and user density
Dense Urban (Case: Mumbai)
70% of 16Million people
In area of 600 sq Km
~3733 households per sq km
Assuming 5 per household
~ 50% wireless internet subscribers
~ 1866 wireless internet/sq km
cell radius = 0.75 km
~ 3300 subscribers/cell
Assuming 5 competitive operators in each area =>
660 subscribers/operator/cell
Rural
villages
cell radius ~ 15 km => 150 villages
700 MHz band could be considered for larger cells
each village has ~ 5 households who would take internet and ~5 public access/kiosks
~ 1500 subscribers/cell
2 or 3 operators
~ subscribers/operator/cell

5. For TGm consideration
IEEE m should support larger cell sizes with radius as high as 20 Km, or even more, and should be able to provide both voice and data in low SNR conditions
Gain obtained through low PAPR especially important for rural case for enhancing the cell coverage. Also, in dense urban cells the gain will compensate for the wall penetration loss to a certain extent
We propose separate zones for OFDMA (mandatory) and SC-FDMA (optional) for uplink multiple access
The operator should be able to judiciously use both the schemes depending on the deployment scenario
We strongly believe that IEEE m may be at the risk of not meeting the above requirements in the absence of SC-FDMA option and may lose out to other competing standards, at least in the Indian context