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Table 1 Main characteristics of caching-based transport protocols

From: Routing metrics for cache-based reliable transport in wireless sensor networks

Protocol

Direction

Xcast

ARQ

Packet

Symmetric reverse

    

recovery

route

RMST

Any

Ucast

Selective repeat

Optional,

Desirable

   

w/ NACK

store-and-forward

 

PSFQ

Sink-to-sensor

Bcast

Selective repeat

Store-and-forward

N/A

   

w/ NACK

  

DTC

Any

Ucast

TCP SACK

Probabilistic caching

Desirable

    

+ E2E

 

Wisden

Sensor-to-sink

Ucast

Selective repeat

Probabilistic caching

Desirable

   

w/ NACK

+ E2E

 

RCRT

Sensor-to-sink

Ucast

Selective repeat

Probabilistic caching

Desirable

w/ cache [15]

  

w/ NACK + ACK

+ E2E

 

RTMC

Any

Ucast

Selective repeat

Store-and-forward

Mandatory

   

w/ NACK + implicit ACK

  

A2RT

Actor-to-actor

Ucast

Depends on selected

Store-and-forward

Desirable

   

transport

+ E2E

 

DTSN

Any

Ucast

Selective repeat

Probabilistic caching

Desirable

   

w/ NACK + ACK

+ E2E