In a mesh, each receiver of a signal also re-transmits it.
That is not powerful enough to be picked up by antenna on Earth, but a NASA orbiter, Mars Odyssey, will act as a relay, re-transmitting the data to Earth in real-time.
In CPR protocol, packets are re-transmitted from the RS meanwhile packets are re-transmitted from the BS in single-hop protocol.
Otherwise, such packet is re-transmitted by the BS until the assumption is satisfied.
In 1975, HBO became the first cable network delivering its signal across the country, via satellite to cable systems, which then re-transmitted it to consumers.
During the packet forwarding, if a packet is not successfully transmitted over a channel, it needs to be re-transmitted completely.
When selecting the best-effort transport means instead of the reliable one, data are delivered without arrival checks and lost data on the network are not re-transmitted.
The elliptical localization system starts with an anchor transmitter (Tx) emitting a pulse, and upon arrival, the pulse is re-transmitted by the target node.
In [13], a collaborative transmission scheme was presented that utilized the adaptive modulation technique in which each sensor (known as the user) transmitted its own information and re-transmitted that of the collaborators, using different modulation schemes.
Collaborative transmission utilizing coded orthogonal frequency division multiplex (COFDM) [2] was presented in [14], where a source sensor transmitted its data to a group of repeater sensors that re-transmitted the signal collaboratively to another receptor sensor, forming a virtual COFDM system transmitting the same information in all the carriers.
Frame can be re-transmitted up to R times, but window size will grow only until phase mx,kas indicated in Tables 1 and 2. The size of contention window for channel x ∈ (c, s) and AC = k in the i th backoff stage (i = 0.. mx,k) has the value of W x, k, i = 2 i ( C W min x, k + 1 ) - 1, 0 ≤ i ≤ m x, k 2 m k, L ( C W min x, k + 1 ) - 1, R ≥ i > m x, k (8).
