Mobile ad hoc network performance improvement using strategical RED

Each network device has buffer for storing incoming packet if packet is not instantly transferred, store packets if buffer space is available and drop packets if buffer space is exhausted. Mobile ad hoc Network (MANET) devices also using buffer space for same purpose as other network devices. MANET has its own routing protocols which can compromised with frequent route exchange, dynamic topology, bandwidth constraint and multi hop routing. Efficiently managing buffer in devices is new area for research is called Active Queue Management. AQM manages queue according to queue policy for accepting incoming packets and forwarding received packets. Most MANET devices uses Drop Tail queue in which packets are accepted till the queue is empty and all incoming packets are dropped when queue become full. Retransmission of dropped packets requires resource consumption (i.e. battery power and link bandwidth) which is critical in MANET. Drop tail queue suffer the problem of global synchronization in which queue is underutilized and over utilized at alternative period of time. RED uses a mechanism early detection of packet drop without waiting to queue overflow, this mechanism inform the sender to reduce the packet transmission rate and also inform the receiver to not to send excessive acknowledgement packets. Strategical RED adjusts queue parameters according to current queue condition and reduces the queuing delay and reduces the queuing delay and increase the throughput. It can reduce considerable amounts of delay time if network length is more and sender and receiver are at sufficient distance and increase the throughput.