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  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 .
TCP fast re-transmission  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  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