CSMA
E201247
CSMA (Carrier Sense Multiple Access) is a network protocol that helps devices share a communication medium by listening before transmitting to reduce data collisions.
All labels observed (5)
| Label | Occurrences |
|---|---|
| CSMA/CD | 4 |
| CSMA/CA | 3 |
| ALOHA protocol | 1 |
| CSMA canonical | 1 |
| Carrier Sense Multiple Access | 1 |
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
medium access control protocol
ⓘ
network protocol ⓘ |
| accessMethodType | contention-based ⓘ |
| appliesTo |
local area networks
ⓘ
wireless networks (via CSMA/CA) ⓘ |
| assumption |
propagation delay is non-zero
ⓘ
stations can sense carrier on the medium ⓘ |
| backoffBehavior | may wait random time before retransmission ⓘ |
| category | random access protocol ⓘ |
| collisionHandling | collisions may still occur due to propagation delay ⓘ |
| contrastedWith |
Time Division Multiple Access
ⓘ
surface form:
TDMA
token passing ⓘ |
| designGoal | improve channel utilization compared to ALOHA ⓘ |
| feature |
each station senses the channel before transmitting
ⓘ
probabilistic occurrence of collisions ⓘ transmission deferred if channel is busy ⓘ |
| fullName |
CSMA
self-linksurface differs
ⓘ
surface form:
Carrier Sense Multiple Access
|
| hasExtension |
CSMA
self-linksurface differs
ⓘ
surface form:
CSMA/CA
CSMA self-linksurface differs ⓘ
surface form:
CSMA/CD
|
| hasVariant |
1-persistent CSMA
ⓘ
non-persistent CSMA ⓘ p-persistent CSMA ⓘ |
| influencedBy |
CSMA
self-linksurface differs
ⓘ
surface form:
ALOHA protocol
|
| keyMechanism |
carrier sensing
ⓘ
listen before transmit ⓘ |
| limitation |
cannot completely eliminate collisions
ⓘ
inefficient under very high load ⓘ performance affected by propagation delay ⓘ |
| mediumType | multiaccess channel ⓘ |
| operatesOn |
broadcast channel
ⓘ
shared communication medium ⓘ |
| originField | computer networking ⓘ |
| performanceDependsOn |
network load
ⓘ
propagation time relative to frame time ⓘ |
| predecessorTo |
CSMA
self-linksurface differs
ⓘ
surface form:
CSMA/CA
CSMA self-linksurface differs ⓘ
surface form:
CSMA/CD
|
| primaryGoal |
coordinate access to a shared medium
ⓘ
reduce data collisions ⓘ |
| relatedTo |
Ethernet
ⓘ
Wi‑Fi ⓘ |
| sensingAction | detects whether the medium is idle or busy ⓘ |
| usedFor | sharing a common transmission channel among multiple stations ⓘ |
| usedInLayer | data link layer ⓘ |
| usedInStandard |
IEEE 802.11
ⓘ
surface form:
IEEE 802.11 (conceptually via CSMA/CA)
IEEE 802.3 Ethernet standard ⓘ
surface form:
IEEE 802.3
|
| usedInSubLayer | MAC sublayer ⓘ |
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
CSMA/CD
this entity surface form:
Carrier Sense Multiple Access
this entity surface form:
CSMA/CD
this entity surface form:
CSMA/CA
this entity surface form:
CSMA/CD
this entity surface form:
CSMA/CA
this entity surface form:
ALOHA protocol
this entity surface form:
CSMA/CD