{"id":294727,"date":"2023-12-11T08:09:41","date_gmt":"2023-12-11T01:09:41","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=294727"},"modified":"2023-12-11T08:09:41","modified_gmt":"2023-12-11T01:09:41","slug":"wi-fi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/wi-fi\/","title":{"rendered":"T\u00ecm hi\u1ec3u v\u1ec1 chu\u1ea9n Wi-Fi 802.11ax – Wi-Fi th\u1ebf h\u1ec7 th\u1ee9 6 c\u00f3 g\u00ec n\u1ed5i b\u1eadt?"},"content":{"rendered":"

Trong cu\u1ed9c s\u1ed1ng c\u00f4ng ngh\u1ec7 hi\u1ec7n nay, <\/span>Wi-Fi<\/b> \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t \u201cng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh\u201d kh\u00f4ng th\u1ec3 thi\u1ebfu. Ch\u00ednh v\u00ec v\u1eady, vi\u1ec7c bi\u1ebft \u0111\u01b0\u1ee3c nh\u1eefng th\u00f4ng tin m\u1edbi nh\u1ea5t li\u00ean quan \u0111\u1ebfn n\u00e2ng c\u1ea5p h\u1ec7 th\u1ed1ng m\u1ea1ng lu\u00f4n c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi t\u1ea5t c\u1ea3 m\u1ecdi ng\u01b0\u1eddi. V\u00e0 trong b\u00e0i vi\u1ebft n\u00e0y, Ho\u00e0ng H\u00e0 Mobile s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1ng k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y th\u1ebf h\u1ec7 th\u1ee9 6 – Wireless Fidelity 802.11ax c\u00f3 g\u00ec n\u1ed5i b\u1eadt nh\u00e9.<\/span><\/p>\n

Wi-Fi 802.11ax th\u1ebf h\u1ec7 th\u1ee9 6 l\u00e0 g\u00ec?<\/b><\/h2>\n

\u0110\u00e2y l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y m\u1edbi nh\u1ea5t trong h\u1ec7 th\u1ed1ng m\u1ea1ng, \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn b\u1edfi li\u00ean minh WiFi Alliance v\u00e0o ng\u00e0y 16\/09\/2019. Tr\u01b0\u1edbc s\u1ef1 ph\u00e1t tri\u1ec3n li\u00ean t\u1ee5c c\u1ee7a c\u00f4ng ngh\u1ec7, chu\u1ea9n c\u00f4ng th\u1ee9c m\u1ea1ng n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u ng\u00e0y c\u00e0ng t\u0103ng v\u1ec1 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u. C\u0169ng nh\u01b0 hi\u1ec7u su\u1ea5t m\u1ea1ng trong m\u00f4i tr\u01b0\u1eddng c\u00f3 nhi\u1ec1u thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i \u0111\u1ed3ng th\u1eddi.<\/span><\/p>\n

\"wi-fi-1\"<\/p>\n

Chi ti\u1ebft h\u01a1n, 802.11ax th\u1ebf h\u1ec7 6 kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i, n\u00f3 c\u00f2n n\u00e2ng c\u1ea5p t\u00ednh t\u01b0\u01a1ng th\u00edch gi\u1eefa nh\u1eefng thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi n\u00f3. \u0110\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ed9 \u0111\u1ecbnh ti\u1ebfn th\u00ec c\u00f4ng ngh\u1ec7 m\u1ea1ng th\u1ebf h\u1ec7 m\u1edbi nh\u1ea5t n\u00e0y c\u00f3 th\u1ec3 gi\u00fap truy\u1ec1n t\u00edn hi\u1ec7u m\u1ed9t c\u00e1ch m\u01b0\u1ee3t m\u00e0 h\u01a1n.<\/span><\/p>\n

Ngo\u00e0i ra, c\u00f4ng ngh\u1ec7 n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng h\u1eefu \u00edch trong vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng. V\u00e0 n\u1ebfu b\u1ea1n mu\u1ed1n bi\u1ebft th\u00eam th\u00f4ng tin chi ti\u1ebft th\u00ec h\u00e3y d\u00e0nh \u00edt ph\u00fat \u0111\u1ecdc qua t\u1eebng n\u1ed9i dung trong b\u00e0i vi\u1ebft n\u00e0y nh\u00e9.<\/span><\/p>\n

\u0110i\u1ec3m danh nh\u1eefng t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Wi-Fi 6<\/b><\/h2>\n

C\u00f3 th\u1ec3 n\u00f3i, 802.11ax l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n k\u1ebft n\u1ed1i m\u1ea1ng kh\u00f4ng d\u00e2y ti\u00ean ti\u1ebfn, \u0111\u00e1nh d\u1ea5u m\u1ed9t b\u01b0\u1edbc \u0111\u1ed9t ph\u00e1 v\u1ec1 kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i so v\u1edbi c\u00e1c th\u1ebf h\u1ec7 tr\u01b0\u1edbc. M\u1eb7c d\u00f9, nh\u1eefng thay \u0111\u1ed5i n\u00e0y kh\u00f4ng nh\u00ecn th\u1ea5y qu\u00e1 r\u00f5 r\u1ec7t, nh\u01b0ng khi s\u1eed d\u1ee5ng b\u1ea1n s\u1ebd c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 tuy\u1ec7t v\u1eddi t\u1eeb phi\u00ean b\u1ea3n n\u00e2ng c\u1ea5p m\u1ea1ng n\u00e0y.<\/span><\/p>\n

T\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i nhanh h\u01a1n<\/b><\/h3>\n

V\u1edbi kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u l\u00ean \u0111\u1ebfn v\u00e0i gigabit m\u1ed7i gi\u00e2y, WiFi 6 m\u1edf ra m\u1ed9t th\u1ebf h\u1ec7 k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y m\u1edbi v\u1edbi hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n tr\u01b0\u1edbc \u0111\u00f3. T\u00ednh n\u0103ng n\u00e0y tr\u1edf th\u00e0nh y\u1ebfu t\u1ed1 quan tr\u1ecdng b\u1edfi s\u1ef1 gia t\u0103ng \u0111\u00e1ng k\u1ec3 v\u1ec1 l\u01b0\u1ee3ng d\u1eef li\u1ec7u v\u00e0 \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u b\u0103ng th\u00f4ng cao. Ch\u1eb3ng h\u1ea1n nh\u01b0 video 4K, tr\u1ef1c tuy\u1ebfn gaming, v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u00e1m m\u00e2y.<\/span><\/p>\n

\"wi-fi-2\"<\/p>\n

B\u00ean c\u1ea1nh \u0111\u00f3, c\u00f4ng ngh\u1ec7 n\u00e0y kh\u00f4ng ch\u1ec9 t\u0103ng c\u01b0\u1eddng t\u1ed1c \u0111\u1ed9 cho m\u1ed7i thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i, m\u00e0 c\u00f2n gi\u1ea3m \u0111\u1ed9 tr\u1ec5. T\u1eeb \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng s\u1ebd c\u00f3 nh\u1eefng tr\u1ea3i nghi\u1ec7m m\u1ea1ng \u1ed5n \u0111\u1ecbnh khi k\u1ebft n\u1ed1i n\u00f3 v\u1edbi c\u00e1c thi\u1ebft b\u1ecb trong gia \u0111\u00ecnh hay n\u01a1i l\u00e0m vi\u1ec7c.<\/span><\/p>\n

H\u1ed7 tr\u1ee3 \u0111\u1ed3ng th\u1eddi cho nhi\u1ec1u thi\u1ebft b\u1ecb<\/b><\/h3>\n

Trong th\u1eddi \u0111\u1ea1i m\u00e0 m\u1ed7i ng\u01b0\u1eddi d\u00f9ng s\u1edf h\u1eefu nhi\u1ec1u thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i internet, t\u1eeb \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng \u0111\u1ebfn m\u00e1y t\u00ednh b\u1ea3ng v\u00e0 c\u00e1c thi\u1ebft b\u1ecb IoT. Vi\u1ec7c y\u00eau c\u1ea7u m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng cao l\u00e0 h\u1ebft s\u1ee9c c\u1ea7n thi\u1ebft. Hi\u1ec3u \u0111\u01b0\u1ee3c nhu c\u1ea7u thi\u1ebft y\u1ebfu n\u00e0y, <\/span>Wi-Fi 802.11ax<\/b> ra \u0111\u1eddi \u0111i k\u00e8m v\u1edbi c\u00f4ng ngh\u1ec7 MU-MIMO (Multiple User, Multiple Input, Multiple Output) cho ph\u00e9p g\u1eedi v\u00e0 nh\u1eadn d\u1eef li\u1ec7u \u0111\u1ed3ng th\u1eddi \u0111\u1ed1i v\u1edbi nhi\u1ec1u thi\u1ebft b\u1ecb kh\u00e1c nhau. \u0110i\u1ec1u n\u00e0y g\u00f3p ph\u1ea7n \u0111\u1ea3m b\u1ea3o m\u1ed7i thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i \u0111\u1ec1u c\u00f3 th\u1ec3 t\u1eadn h\u01b0\u1edfng b\u0103ng th\u00f4ng t\u1ed1i \u0111a.\u00a0<\/span><\/p>\n

\"wi-fi-3\"<\/p>\n

Tr\u01b0\u1edbc \u0111\u00e2y, c\u00e1c ti\u00eau chu\u1ea9n WiFi ti\u1ec1n nhi\u1ec7m \u0111\u00e3 c\u00f3 h\u1ed7 tr\u1ee3 MU-MIMO, nh\u01b0ng WiFi 6 \u0111\u01b0a n\u00f3 l\u00ean m\u1ed9t t\u1ea7m cao m\u1edbi v\u1edbi kh\u1ea3 n\u0103ng x\u1eed l\u00fd \u0111\u1ed3ng th\u1eddi \u0111\u1ebfn t\u1ed1i \u0111a t\u1ed1i \u0111a 8 thi\u1ebft b\u1ecb. H\u01a1n h\u1ebft, n\u00f3 c\u00f2n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi kh\u1ea3 n\u0103ng gi\u1ea3m t\u00ecnh tr\u1ea1ng chia s\u1ebb b\u0103ng th\u00f4ng v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t an to\u00e0n trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng \u0111\u00f4ng ng\u01b0\u1eddi.<\/span><\/p>\n

S\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 OFDMA \u0111\u1ed9t ph\u00e1<\/b><\/h3>\n

C\u00f4ng ngh\u1ec7 OFDMA (Orthogonal Frequency Division Multiple Access) l\u00e0 m\u1ed9t \u0111\u1ed9t ph\u00e1 k\u1ef9 thu\u1eadt, mang l\u1ea1i nhi\u1ec1u \u01b0u \u0111i\u1ec3m \u0111\u00e1ng k\u1ec3 v\u00e0 t\u1ed1i \u01b0u h\u00f3a s\u1ef1 s\u1eed d\u1ee5ng b\u0103ng th\u00f4ng m\u1ea1ng. N\u00f3i chi ti\u1ebft \u01a1n th\u00ec OFDMA cho ph\u00e9p WiFi 6 chia b\u0103ng th\u00f4ng t\u1ea7n s\u1ed1 ra th\u00e0nh c\u00e1c kh\u1ed1i nh\u1ecf g\u1ecdi l\u00e0 tia (sub-channels). C\u00e1ch th\u1ee9c n\u00e0y gi\u00fap ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng c\u1ea7n ph\u1ea3i ch\u1edd \u0111\u1ee3i khi g\u1eedi d\u1eef li\u1ec7u, thay v\u00e0o \u0111\u00f3 b\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 t\u1ea1o ra \u0111\u01b0\u1ee3c s\u1ef1 ti\u1ec7n l\u1ee3i khi s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb.<\/span><\/p>\n

\"wi-fi-4\"<\/p>\n

So s\u00e1nh v\u1edbi nh\u1eefng phi\u00ean b\u1ea3n c\u0169 tr\u01b0\u1edbc \u0111\u00f3, khi WiFi 802.11ax \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng OFDMA th\u00ec n\u00f3 \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1edbi nh\u1eefng con s\u1ed1 tuy\u1ec7t v\u1eddi. Ch\u1eb3ng h\u1ea1n nh\u01b0 n\u00f3 c\u00f3 9.6 Gbps v\u00e0 t\u1ed1c \u0111\u1ed9 t\u0103ng nhanh 40%. Ch\u01b0a k\u1ec3 \u0111\u1ebfn, c\u00f4ng ngh\u1ec7 n\u00e0y c\u00f2n c\u00f3 kh\u1ea3 n\u0103ng x\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m truy c\u1eadp tr\u00e1i ph\u00e9p n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea5p quy\u1ec1n. Hay n\u00f3i c\u00e1ch kh\u00e1c, n\u1ebfu xu\u1ea5t hi\u1ec7n m\u1ed9t l\u01b0u l\u01b0\u1ee3ng kh\u00e1c tr\u00ean k\u00eanh th\u00ec h\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng b\u1ecf qua n\u00f3, nh\u01b0ng v\u1eabn ti\u1ebfp t\u1ee5c c\u1ea5p k\u1ebft n\u1ed1i v\u1edbi nh\u1eefng thi\u1ebft b\u1ecb quen thu\u1ed9c.<\/span><\/p>\n

T\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u1edbi WPA3<\/b><\/h3>\n

WPA3 (Wi-Fi Protected Access 3)<\/b> \u0111\u01b0a ra m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 m\u1ea1nh m\u1ebd h\u01a1n, v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00e1c phi\u00ean b\u1ea3n tr\u01b0\u1edbc \u0111\u00f3, \u0111\u1eb7c bi\u1ec7t l\u00e0 WPA2. \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u0103n ch\u1eb7n hi\u1ec7u qu\u1ea3 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb b\u00ean ngo\u00e0i v\u00e0 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u c\u00e1 nh\u00e2n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. M\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a WPA3 l\u00e0 h\u1ec7 th\u1ed1ng m\u00e3 h\u00f3a individualized cho m\u1ed7i thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i. N\u00f3 t\u0103ng c\u01b0\u1eddng s\u1ef1 an to\u00e0n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u00e1c k\u1ef9 thu\u1eadt t\u1ea5n c\u00f4ng hi\u1ec7n \u0111\u1ea1i.<\/span><\/p>\n

\"wi-fi-5\"<\/p>\n

\u0110\u1eb7c bi\u1ec7t, WPA3 c\u0169ng cung c\u1ea5p c\u00e1c c\u01a1 ch\u1ebf b\u1ea3o v\u1ec7 m\u1ea1ng kh\u00f4ng d\u00e2y tr\u01b0\u1edbc c\u00e1c t\u00ecnh hu\u1ed1ng t\u1ea5n c\u00f4ng nh\u01b0 \u201cBrute Force\u201d. \u0110\u1ed3ng th\u1eddi, c\u00f4ng ngh\u1ec7 \u201cDragonfly Key Exchange\u201d gi\u00fap ng\u0103n ch\u1eb7n hi\u1ec7u qu\u1ea3 nh\u1eefng cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ng\u01b0\u1eddi x\u00e2m nh\u1eadp. C\u00e1ch th\u1ee9c n\u00e0y tr\u1edf th\u00e0nh quan tr\u1ecdng h\u01a1n bao gi\u1edd h\u1ebft trong th\u1eddi k\u1ef3 m\u00e0 vi\u1ec7c b\u1ea3o v\u1ec7 th\u00f4ng tin c\u00e1 nh\u00e2n tr\u1edf n\u00ean ng\u00e0y c\u00e0ng c\u1ea7n thi\u1ebft.<\/span><\/p>\n

Ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng<\/b><\/h3>\n

M\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 n\u1ed5i b\u1eadt kh\u00e1c c\u1ee7a m\u1ea1ng WiFi 6, \u0111\u00f3 l\u00e0 t\u00ednh n\u0103ng Target Wake Time (TWT). \u0110\u1ed1i v\u1edbi TWT, n\u00f3 cho ph\u00e9p thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i \u0111\u1ecbnh k\u1ef3 t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 \u0111\u1ec3 “th\u1ee9c d\u1eady” v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u. Sau qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng h\u1ebft c\u00f4ng su\u1ea5t, n\u00f3 s\u1ebd quay l\u1ea1i ch\u1ebf \u0111\u1ed9 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng. Nh\u01b0 v\u1eady, t\u00ednh n\u0103ng n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap k\u00e9o d\u00e0i th\u1eddi l\u01b0\u1ee3ng pin cho c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng, m\u00e0 c\u00f2n gi\u1ea3m t\u00ecnh tr\u1ea1ng l\u00e3ng ph\u00ed n\u0103ng l\u01b0\u1ee3ng do vi\u1ec7c truy\u1ec1n th\u00f4ng li\u00ean t\u1ee5c khi kh\u00f4ng c\u1ea7n thi\u1ebft.<\/span><\/p>\n

\"wi-fi-6\"<\/p>\n

B\u00ean c\u1ea1nh \u0111\u00f3, WiFi 6 c\u0169ng \u0111em l\u1ea1i s\u1ef1 linh ho\u1ea1t trong vi\u1ec7c qu\u1ea3n l\u00fd n\u0103ng l\u01b0\u1ee3ng. V\u1edbi c\u00f4ng ngh\u1ec7 BSS Coloring cho ph\u00e9p c\u00e1c tr\u1ea1m c\u01a1 s\u1edf truy\u1ec1n th\u00f4ng v\u1edbi m\u1ee9c c\u00f4ng su\u1ea5t th\u1ea5p h\u01a1n. Nh\u01b0ng cho d\u00f9 c\u00f4ng su\u1ea5t th\u1ea5p m\u00e0 v\u1eabn kh\u00f4ng g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh tr\u1ea3i nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/span><\/p>\n

So s\u00e1nh th\u00f4ng s\u1ed1 Wi-Fi 6 (802.11ax) v\u00e0 Wi-Fi 5 (802.11ac)<\/b><\/h2>\n

Vi\u1ec7c so s\u00e1nh gi\u1eefa nh\u1eefng ti\u00eau chu\u1ea9n kh\u00e1c nhau s\u1ebd gi\u00fap b\u1ea1n \u0111\u1ecdc nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c c\u00e1c \u01b0u \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m gi\u1eef m\u1ed7i c\u1ea5u tr\u00fac m\u1ea1ng. C\u1ee5 th\u1ec3 trong ph\u1ea7n n\u1ed9i dung n\u00e0y, Ho\u00e0ng H\u00e0 Mobile s\u1ebd so s\u00e1nh c\u00e1c th\u00f4ng s\u1ed1 c\u1ee7a hai c\u00f3 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng l\u00e0 WiFi 802.11ax v\u00e0 WiFi 802.11ac nh\u00e9.<\/span><\/p>\n

V\u1ec1 t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i<\/b><\/h3>\n

WiFi 6 cung c\u1ea5p t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1i \u0111a l\u00ean \u0111\u1ebfn 9.6 Gbps. Trong khi \u0111\u00f3, WiFi 5 ch\u1ec9 c\u00f3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u l\u00ean \u0111\u1ebfn 3.5 Gbps. D\u1ef1a v\u00e0o \u0111i\u1ec3m \u0111\u1ea7u ti\u00ean n\u00e0y ch\u00fang ta c\u0169ng \u0111\u00e3 th\u1ea5y \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u1ed5i b\u1eadt c\u1ee7a \u0111i\u1ec3m truy c\u1eadp m\u1ea1ng th\u1ebf h\u1ec7 m\u1edbi r\u1ed3i ph\u1ea3i kh\u00f4ng n\u00e0o.<\/span><\/p>\n

V\u1ec1 b\u0103ng t\u1ea7n<\/b><\/h3>\n

WiFi 6 ho\u1ea1t \u0111\u1ed9ng \u1edf b\u0103ng t\u1ea7n 2.4 GHz v\u00e0 5GHz, c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng l\u00ean c\u00e1c b\u0103ng t\u1ea7n 6 GHz. Tuy nhi\u00ean v\u1edbi th\u1ebf h\u1ec7 c\u0169 WiFi 5 th\u00ec n\u00f3 ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng \u1edf b\u0103ng t\u1ea7n 5GHz v\u00e0 kh\u00f4ng th\u1ec3 m\u1edf r\u1ed9ng h\u01a1n n\u1eefa. Nh\u01b0 v\u1eady, v\u1edbi ti\u00eau chu\u1ea9n m\u1ea1ng c\u0169, ng\u01b0\u1eddi d\u00f9ng s\u1ebd b\u1ecb gi\u1edbi h\u1ea1n trong ph\u1ea1m vi s\u1eed d\u1ee5ng, c\u0169ng nh\u01b0 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u.<\/span><\/p>\n

\"wi-fi-7\"<\/p>\n

V\u1ec1 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 \u0111\u1ed3ng th\u1eddi<\/b><\/h3>\n

Nh\u01b0 th\u00f4ng tin v\u1ec1 \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a <\/span>Wi-Fi 802.11ax<\/b> th\u00ec ch\u00fang ta \u0111\u00e3 bi\u1ebft c\u00f4ng ngh\u1ec7 c\u1ee7a ti\u00eau chu\u1ea9n n\u00e0y c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 \u0111\u1ed3ng th\u1eddi nhi\u1ec1u thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i, gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 t\u0103ng hi\u1ec7u su\u1ea5t trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng \u0111a thi\u1ebft b\u1ecb. Nh\u01b0ng \u0111\u1ed1i v\u1edbi c\u00f4ng ngh\u1ec7 m\u1ea1ng c\u1ee7a 802.11ac th\u00ec nh\u01b0 th\u1ebf n\u00e0o? M\u1eb7c d\u00f9 802.11ac c\u0169ng h\u1ed7 tr\u1ee3 \u0111\u1ed3ng th\u1eddi nhi\u1ec1u thi\u1ebft b\u1ecb, nh\u01b0ng kh\u1ea3 n\u0103ng x\u1eed l\u00fd c\u1ee7a n\u00f3 s\u1ebd kh\u00f4ng b\u1eb1ng th\u1ebf h\u1ec7 th\u1ee9 6.<\/span><\/p>\n

V\u1ec1 c\u00f4ng ngh\u1ec7 OFDMA<\/b><\/h3>\n

Th\u1eadt \u0111\u1eb7c bi\u1ec7t khi c\u00f4ng ngh\u1ec7 OFDMA ch\u1ec9 m\u1edbi \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong th\u1ebf h\u1ec7 m\u1ea1ng \u0111\u1eddi m\u1edbi nh\u1ea5t. V\u00e0 nh\u01b0 ki\u1ebfn th\u1ee9c Ho\u00e0ng H\u00e0 Mobile v\u1eeba chia s\u1ebb \u1edf tr\u00ean, OFDMA s\u1ebd h\u1ed7 tr\u1ee3 t\u1ed1i \u01b0u h\u00f3a s\u1ef1 truy\u1ec1n b\u0103ng th\u00f4ng v\u00e0 gi\u00fap cho thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c li\u00ean k\u1ebft nhanh, nh\u01b0ng \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1ee3c t\u00ednh \u1ed5n \u0111\u1ecbnh khi s\u1eed d\u1ee5ng.<\/span><\/p>\n

\"wi-fi-8\"<\/p>\n

V\u1ec1 t\u00ednh n\u0103ng b\u1ea3o m\u1eadt<\/b><\/h3>\n

C\u00f3 th\u1ec3 n\u00f3i, m\u1ed7i th\u1ebf h\u1ec7 \u0111\u01b0\u1ee3c trang b\u1ecb m\u1ed9t c\u00f4ng ngh\u1ec7 b\u1ea3o m\u1eadt kh\u00e1c nhau. V\u00e0 t\u1ea5t nhi\u00ean th\u1ebf h\u1ec7 c\u00e0ng m\u1edbi th\u00ec t\u00ednh c\u1ea3i thi\u1ec7n c\u1ee7a n\u00f3 s\u1ebd c\u00e0ng cao. \u0110i\u1ec1u n\u00e0y \u0111\u1ed3ng ngh\u0129a v\u1edbi m\u1ea1ng 802.11ax h\u1ed7 tr\u1ee3 WPA3, m\u1ed9t chu\u1ea9n b\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd h\u01a1n so v\u1edbi WPA2 c\u1ee7a m\u1ea1ng 802.11ac.\u00a0<\/span><\/p>\n

Nh\u1eefng th\u1ebf h\u1ec7 smartphone \u0111\u01b0\u1ee3c trang b\u1ecb Wi-Fi 6?<\/b><\/h2>\n

Nh\u01b0 th\u00f4ng tin kh\u00e1i ni\u1ec7m, ch\u00fang t\u00f4i c\u00f3 nh\u1eafc \u0111\u1ebfn vi\u1ec7c WiFi 6 s\u1ebd \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, trong \u0111\u00f3 c\u00f3 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh. \u0110\u1eb7c bi\u1ec7t, m\u1ed7i h\u00e3ng \u0111i\u1ec7n tho\u1ea1i hi\u1ec7n nay \u0111\u1ec1u \u0111\u00e3 t\u00edch h\u1ee3p c\u00f4ng ngh\u1ec7 m\u1ea1ng n\u00e0y v\u1ec1 c\u00e1c th\u1ebf h\u1ec7 smartphone hi\u1ec7n \u0111\u1ea1i nh\u1ea5t. V\u1eady c\u1ee5 th\u1ec3 \u0111\u00f3 l\u00e0 nh\u1eefng chi\u1ebfc \u0111i\u1ec7n tho\u1ea1i th\u00fa v\u1ecb n\u00e0o? M\u1eddi b\u1ea1n tham kh\u1ea3o ti\u1ebfp n\u1ed9i dung b\u00ean d\u01b0\u1edbi \u0111\u00e2y c\u00f9ng Ho\u00e0ng H\u00e0 Mobile nh\u00e9.<\/span><\/p>\n

\u0110\u1ed1i v\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh iOS<\/b><\/h3>\n

H\u1ea7u nh\u01b0 c\u00e1c si\u00eau ph\u1ea9m t\u00e2n binh c\u1ee7a nh\u00e0 \u201cT\u00e1o khuy\u1ebft\u201d \u0111\u1ec1u \u0111\u01b0\u1ee3c trang b\u1ecb ti\u00eau chu\u1ea9n k\u1ebft n\u1ed1i m\u1ea1ng 802.11ax. C\u1ee5 th\u1ec3 l\u00e0 t\u1eeb d\u00f2ng iPhone 11 series l\u00e0 b\u1ea1n \u0111\u00e3 nh\u1eadn th\u1ea5y \u0111\u01b0\u1ee3c nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t n\u00e0y. V\u00e0 g\u1ea7n \u0111\u00e2y nh\u1ea5t l\u00e0 s\u1ef1 ki\u1ec7n ra m\u1eaft chi\u1ebfc \u0111i\u1ec7n tho\u1ea1i Titan \u0111\u1ea7u ti\u00ean iPhone 15 series c\u0169ng \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u1edbi th\u00f4ng s\u1ed1 h\u1ebft s\u1ee9c n\u1ed5i b\u1eadt, khi \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf kh\u1ea3 n\u0103ng li\u00ean k\u1ebft m\u1ea1ng nhanh v\u00e0 \u1ed5n \u0111\u1ecbnh.<\/span><\/p>\n

\"wi-fi-9\"<\/p>\n

B\u00ean c\u1ea1nh \u0111\u00f3, WiFi 6 c\u0169ng \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p tr\u00ean c\u00e1c d\u00f2ng MacBook Air, MacBook Pro s\u1eed d\u1ee5ng chip M1, M2. Tuy nhi\u00ean \u0111\u1ed1i v\u1edbi nh\u1eefng m\u1eabu s\u1ea3n ph\u1ea9m m\u00e1y t\u00ednh b\u1ea3ng c\u1ee7a Apple th\u00ec c\u00f2n g\u1eb7p nhi\u1ec1u h\u1ea1n ch\u1ebf. B\u1edfi v\u00ec ti\u00eau chu\u1ea9n m\u1ea1ng th\u1ebf h\u1ec7 th\u1ee9 6 ch\u1ec9 m\u1edbi t\u01b0\u01a1ng th\u00edch v\u1edbi iPad Pro.<\/span><\/p>\n

\u0110\u1ed1i v\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh Android<\/b><\/h3>\n

Kh\u00f4ng ch\u1ec9 c\u00f3 Apple m\u1edbi bi\u1ebft c\u00e1ch t\u1eadn d\u1ee5ng ti\u00eau chu\u1ea9n m\u1ea1ng th\u1ebf h\u1ec7 m\u1edbi <\/span>v\u00e0o c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a m\u00ecnh. Ngay c\u1ea3 c\u00e1c h\u00e3ng smartphone s\u1eed d\u1ee5ng h\u1ec7 \u0111i\u1ec1u h\u00e0nh AnDroid c\u0169ng nhanh ch\u00f3ng b\u1eaft k\u1ecbp xu th\u1ebf n\u00e0y. V\u00e0 ngay sau \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 g\u1ee3i \u00fd \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n th\u00eam t\u00ednh n\u0103ng m\u1ea1ng WiFi 6 m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o.<\/span><\/p>\n

\"wi-fi-10\"<\/p>\n

\u0110\u1ed1i v\u1edbi Samsung th\u00ec s\u1ebd c\u00f3 nhi\u1ec1u ph\u00e2n kh\u00fac s\u1ea3n ph\u1ea9m kh\u00e1c nhau, nh\u01b0ng h\u1ea7u nh\u01b0 nh\u1eefng thi\u1ebft k\u1ebf m\u1edbi n\u00e0o c\u0169ng \u0111\u01b0\u1ee3c \u0111\u00ednh k\u00e8m th\u00eam WiFi 6. Ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o \u0111\u1ebfn Samsung Galaxy S23 series, Samsung Galaxy S22 series, Samsung Galaxy Note 10 series,…<\/span><\/p>\n

Ngo\u00e0i ra, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 tham kh\u1ea3o \u0111\u1ebfn s\u1ea3n ph\u1ea9m c\u1ee7a m\u1ed9t s\u1ed1 th\u01b0\u01a1ng hi\u1ec7u n\u1ed5i ti\u1ebfng kh\u00e1c nh\u01b0 Xiaomi Mi 10 series, ZTE Axon 10s Pro, Black Shark 3 series, OnePlus 9, Asus ROG Phone 5, Oppo Find X3 Pro,…<\/span><\/p>\n

K\u1ebft lu\u1eadn<\/b><\/h2>\n

Nh\u01b0 v\u1eady, b\u00e0i vi\u1ebft n\u00e0y c\u1ee7a Ho\u00e0ng H\u00e0 Mobile \u0111\u00e3 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 ti\u00eau chu\u1ea9n m\u1ea1ng \u0111\u1eddi m\u1edbi <\/span>Wi-Fi th\u1ebf h\u1ec7 6 – 802.11ax<\/b>. Hy v\u1ecdng v\u1edbi c\u00e1c ki\u1ebfn th\u1ee9c tr\u00ean, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 gi\u1ea3i \u0111\u00e1p m\u1ecdi th\u1eafc m\u1eafc c\u1ee7a b\u1ea1n, c\u0169ng nh\u01b0 cung c\u1ea5p c\u00e1c s\u1ef1 l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng ph\u00f9 h\u1ee3p nh\u1ea5t.<\/span><\/p>\n

Xem th\u00eam:<\/b><\/p>\n