This is heightened because of the huge requests from subscribers coupled with the variation of the unicast packet rate of transmission and ability to the recover
lost packet. Chase [5] summarizes that IP multicast is used as a countermeasure because it provides huge bandwidth efficiency over the unicast delivery.
Different
lost packet from different receiver are merged to retrieve the lost data packets in one transmission by a multiple receiver [9].
TCP fast re-transmission [7] mechanism reduces the time that a sender waits before re-transmitting a
lost packet. Thus when receiver receive abnormal data or out of order data then it immediately sends the duplicate ACK to the sender and if sender receives three ACK that means packet loss, then the sender immediately re-transmit the lost segment to the receiver without any wait.
In this article we use the terms
lost packet or packet error as general terms for all situations when the received packet has any bit errors, including complete transmission channel failure.
Since packet error rate is the same, compared to shorter packet length, the
lost packet number will be less.
If the protocol like RED [15] which is based on the TCP protocol is used for QoS, each packet needs to be confirmed and every
lost packet needs to be retransmitted.
(ii) There are periods without any
lost packet and periods with many losses (bursts).
In the event of a
lost packet, the duplicate packet may still reach the destination in time.
MY New Year resolution to lose weight and get fit is already in tatters following the discovery of a
lost packet of mince pies.
Clarity, with patented Polycom
Lost Packet Recovery technologies to protect