[์ปดํ“จํ„ฐ ๋„คํŠธ์›Œํฌ]๋„คํŠธ์›Œํฌ ์ฝ”์–ด

2020. 9. 7. 19:50ยทComputer Science/์ปดํ“จํ„ฐ ๋„คํŠธ์›Œํฌ

ํŒจํ‚ท ๊ตํ™˜(packet switching)

 

์ข…๋‹จ ์‹œ์Šคํ…œ ์–ดํ”Œ๋ฆฌ์ผ€์ด์…˜์˜ ๋ฉ”์‹œ์ง€ ์ „๋‹ฌ

-๋ฉ”์‹œ์ง€๋Š” ์ผ์ •ํ•œ ํฌ๊ธฐ์˜ ํŒจํ‚ท์œผ๋กœ ๋ถ„ํ• 

 

๋„คํŠธ์›Œํฌ ์ฝ”์–ด๋Š” ๋ผ์ดํ„ฐ์˜ ์ƒํ˜ธ์—ฐ๊ฒฐ

- ํ•œ ๋ผ์šฐํ„ฐ์—์„œ ๋‹ค๋ฆ„ ๋ผ์šฐํ„ฐ๋กœ ํŒจํ‚ท์„ ์ „๋‹ฌ (packet forward)

- ์ €์žฅ-ํ›„-์ „๋‹ฌ ์ „์†ก(store-and-forword)

 -> ์™„์ „ํ•œ ํŒจํ‚ท์˜ ๋„์ฐฉ๊นŒ์ง€ ๋ฒ„ํผ์— ์ €์žฅ๋˜์—ˆ๋‹ค๊ฐ€ ๋‹ค์Œ ์ถœ๋ ฅ ๋งํฌ๋กœ ์ „๋‹ฌ

store-and-forword

 

๋Œ€๊ธฐ ์ง€์—ฐ(queueing delay)

-๋งํฌ ์ „์†ก๋ฅ ์˜ ํ•œ๊ณ„

-> ๋งํฌ ์ „์†ก๋ฅ ์„ ์ดˆ๊ณผํ•˜์—ฌ ํŒจํ‚ท์„ ์ „์†ก ํ•  ์ˆ˜๋Š” ์—†๋‹ค. 

-๋ผ์šฐํ„ฐ์˜ ์ถœ๋ ฅ๋งํฌ๊ฐ€ ๊ฐ€์šฉํ•  ๋•Œ ๊นŒ์ง€ ํŒจํ‚ท์€ ๋ฒ„ํผ/ํ์—์„œ ๊ธฐ๋‹ค๋ฆฐ๋‹ค.

 

ํŒจํ‚ท ์†์‹ค(loss)

-๋ฒ„ํผ ์šฉ๋Ÿ‰์˜ ํ•œ๊ณ„

-์šฉ๋Ÿ‰์ด ์ดˆ๊ณผํ•˜๋Š” ๊ฒฝ์šฐ, ์ดํ›„์— ๋„์ฐฉํ•œ ํŒจํ‚ท์€ ํ๊ธฐ๋œ๋‹ค.

 

๋ผ์šฐํŒ…(routing)

 

ํšŒ์„  ๊ตํ™˜

 

-์—ฐ๊ฒฐํ˜• ๋„คํŠธ์›Œํฌ

 

-์ฑ„๋„ ๋‹ค์ค‘ํ™”

-> ์ฃผํŒŒ์ˆ˜ ๋ถ„ํ•  ๋‹ค์ค‘ํ™”(FDM), ์‹œ๋ถ„ํ•  ๋‹ค์ค‘ํ™”(TDM)

 

-์ข…๋‹จ ํ˜ธ์ŠคํŠธ ์‚ฌ์ด์˜ ์—ฐ๊ฒฐ๋งํฌ๋ฅผ ํ†ต์‹  ์„ธ์…˜ ๋™์•ˆ ๋…์ 

-> ํŒจํ‚ท ์ „์†ก์— ๋Œ€ํ•œ ์„ฑ๋Šฅ๋ณด์žฅ

 

-ํšŒ์„  ๋…์ ์œผ๋กœ ์ธํ•œ ์œ ํœด ์ž์› ๋‚ญ๋น„ ๋ฐœ์ƒ   


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