Reducing operational expenditures (OpEx) have become main concern for almost all communication service providers in the world. Some practical ideas and techniques implemented in Grameenphone might be very helpful for others who are fighting to survive or trying to be more profitable or going to provide new services- 3G /LTE/LTE-Aor want to contribute in climate change anywhere in the world. Some challenging techniques and tactics are discussed here to reduce vast amount of energy consumptions from different equipment used in the base station, access and transport network for cost reduction.
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