PHY Insights | Sumble

What is PHY?

PHY, short for physical layer, is the lowest layer in the OSI model. It defines the hardware specifications for transmitting and receiving data over a physical medium. This includes aspects like voltage levels, data rates, modulation techniques, and physical connectors. It is responsible for the actual transmission of raw data bits over a communication channel, facilitating the interface between a device and the transmission medium.

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What other technologies are related to PHY?

PHY Competitor Technologies

Ethernet MAC

Ethernet MAC is a competing technology for wired communication. It provides similar data link layer functionality, but over wired connections, unlike PHY which is wireless.

mentioned alongside PHY in 64% (89) of relevant job posts

LTE

LTE is a 4G wireless communication standard that competes with other PHY technologies like 5G NR.

mentioned alongside PHY in 2% (354) of relevant job posts

4G

4G is a generation of mobile telecommunications technology that may utilize a different PHY than other wireless technologies.

mentioned alongside PHY in 1% (175) of relevant job posts

PHY Complementary Technologies

RLC

Radio Link Control (RLC) is a layer 2 protocol that works closely with the PHY layer in wireless communication systems like LTE and NR. It provides services like segmentation, reassembly, and error correction.

mentioned alongside PHY in 44% (426) of relevant job posts

RRC

Radio Resource Control (RRC) is a layer 3 protocol that controls the radio resources and connection establishment, release, and maintenance for user equipment. It complements the PHY layer by configuring its parameters.

mentioned alongside PHY in 39% (451) of relevant job posts

PDCP

Packet Data Convergence Protocol (PDCP) is a layer 2 protocol providing header compression, security, and integrity protection to IP packets. It is above PHY layer.

mentioned alongside PHY in 39% (339) of relevant job posts