In today’s fast industrial growth the important
global environmental issue is reduction of co2 emission.
Recently fast growth of communication wired and
wireless communication like mobile communication
becomes increasingly popular with consumers. The
wireless mesh network (WMN) is most likely favorite
wireless access. WMN provides the wireless connectivity
through the sensor to the consumer lot economical and
much more supple backhaul infrastructure as compared
with the wired network solutions. The wireless
networking solutions for upcoming future has been
adopted by most emerging technology known as wireless
mesh network(WMN). Due to the consumption of
maximum energy in that petricular the field of ICT
industries which will direct impact on our environment
i.e. co2 emission, energy efficiency and life of network
becomes a important key factor to evaluate the
performance of WSN and WMN. This survey paper is a
primarily focuses on the classifications of the different
layers and the humble approaches which are devoted to
the conservation of energy. It also survey for energy
saving concepts for wireless mesh networks.
Keywords : WSN:- Wireless Sensor Network ,WMN:- Wireless Mesh Network, 802.11 Routing Protocol, MAC Protocols.