請問有線跟無線傳輸速度
 

請問各位大大,我最近裝無線網路,發現有線跟無線傳輸速度差了快兩倍左右
下載15MB的檔案,無線要5分,有線只要3分,大家都是這樣嗎?
我的基地台是PCI的,網卡是ZYXEL,如果速度差那麼多,想說還是牽線好了
(下載時信號一直是滿格）

無線是方便行動族或是懶的牽線的人.....
在說現在還是有線比較快.......
如果無線能比有線來的快相信大家早就換了..........

兄台的頻寬不大
無線才50KB/S
小弟的無線下載最快約300KB/S

請問你頻寬是多少?
我的是3M/128

兄台的頻寬已經很大了
下載速度無法提升
不一定是你的頻寬問題
也可能對方的頻寬不夠造成的

我發現好像也是,因為我是GIGA,在GIGA網站下載也只是347KB跟263KB,差一點點而已
但是無線網路要是斷線的話,是網卡原因比較多,還是基地台的問題比較多,
因為AP也有電源在,所以原因不知為何,斷線又不能重新連線,睡著了不知怎麼辦,浪費電

802.11b的上限約6-700KB/sec,應付3M/128的XDSL應該措措有餘了,更別說是802.11g了,或許是其它AP的干擾也說不定,您該先跑一下site suvey(找出不會被干擾的頻道,或乾脆換802.11a:p)....BTW,鵝貼一下鵝家這邊在室內用3dbi rod antenna能suvey到啥給大家欣賞欣賞好了(原文在免費無線上網(http://www.pczone.com.tw/vbb3/showthread.php?t=143653)),不過為了安全起見,ESSID及鵝自用的部份鵝先拿掉了:p:p.....

wlan0 Scan completed :
Cell 01 - Address: 00:02:6F:20:E4:C6
ESSID:""
Mode:Master
Frequency:2.462GHz
Bit Rate:1Mb/s
Bit Rate:2Mb/s
Bit Rate:5.5Mb/s
Bit Rate:11Mb/s
Quality:1/100 Signal level:-121 dBm Noise level:-256 dBm
Encryption key:off
Cell 02 - Address: 00:11:2F:C4:2A:DA
ESSID:""
Mode:Master
Frequency:2.462GHz
Bit Rate:1Mb/s
Bit Rate:2Mb/s
Bit Rate:5.5Mb/s
Bit Rate:11Mb/s
Bit Rate:18Mb/s
Bit Rate:24Mb/s
Bit Rate:36Mb/s
Bit Rate:54Mb/s
Quality:6/100 Signal level:-121 dBm Noise level:-256 dBm
Encryption key:off
Cell 03 - Address: 00:12:A9:06:42:1C
ESSID:""
Mode:Master
Frequency:2.437GHz
Bit Rate:1Mb/s
Bit Rate:2Mb/s
Bit Rate:5.5Mb/s
Bit Rate:11Mb/s
Bit Rate:6Mb/s
Bit Rate:12Mb/s
Bit Rate:24Mb/s
Bit Rate:36Mb/s
Quality:1/100 Signal level:-115 dBm Noise level:-256 dBm
Encryption key:off
Cell 04 - Address: 00:12:A9:03:5E:AB
ESSID:""
Mode:Master
Frequency:2.437GHz
Bit Rate:1Mb/s
Bit Rate:2Mb/s
Bit Rate:5.5Mb/s
Bit Rate:11Mb/s
Bit Rate:6Mb/s
Bit Rate:12Mb/s
Bit Rate:24Mb/s
Bit Rate:36Mb/s
Quality:1/100 Signal level:-125 dBm Noise level:-256 dBm
Encryption key:off
Cell 05 - Address: 00:12:A9:03:5E:B1
ESSID:""
Mode:Master
Frequency:2.437GHz
Bit Rate:1Mb/s
Bit Rate:2Mb/s
Bit Rate:5.5Mb/s
Bit Rate:11Mb/s
Bit Rate:6Mb/s
Bit Rate:12Mb/s
Bit Rate:24Mb/s
Bit Rate:36Mb/s
Quality:33/100 Signal level:-111 dBm Noise level:-256 dBm
Encryption key:off
Cell 06 - Address: 00:12:A9:06:41:97
ESSID:""
Mode:Master
Frequency:2.437GHz
Bit Rate:1Mb/s
Bit Rate:2Mb/s
Bit Rate:5.5Mb/s
Bit Rate:11Mb/s
Bit Rate:6Mb/s
Bit Rate:12Mb/s
Bit Rate:24Mb/s
Bit Rate:36Mb/s
Quality:92/100 Signal level:-101 dBm Noise level:-256 dBm
Encryption key:off
Cell 07 - Address: 00:02:72:00:7C:67
ESSID:""
Mode:Master
Frequency:2.412GHz
Bit Rate:1Mb/s
Bit Rate:2Mb/s
Bit Rate:5.5Mb/s
Bit Rate:11Mb/s
Quality:34/100 Signal level:-101 dBm Noise level:-256 dBm
Encryption key:off
Cell 08 - Address: 00:50:FC5:B9:64
ESSID:""
Mode:Master
Frequency:2.437GHz
Bit Rate:1Mb/s
Bit Rate:2Mb/s
Bit Rate:5.5Mb/s
Bit Rate:11Mb/s
Quality:26/100 Signal level:-121 dBm Noise level:-256 dBm
Encryption key:on
Cell 09 - Address: 00:30:F1:93:4F:F0
ESSID:""
Mode:Master
Frequency:2.484GHz
Bit Rate:1Mb/s
Bit Rate:2Mb/s
Bit Rate:5.5Mb/s
Bit Rate:11Mb/s
Quality:92/100 Signal level:-71 dBm Noise level:-256 dBm
Encryption key:on

無線網路是半雙工傳輸,也就是說一方發射另一方就只能接收,所以傳輸速度約等於標示的一半,在除8就是一般再用的位元組了,例如802.11g標示54M,除2等於27M在除8,約等於3-4MB/s,有線網路(RJ45)就是全雙工,就是可以兩端同時發射接收訊號,所以標示100M直接除8等於12.5MB/s,實際上使用也大約略小於12.5MB/s,因為要扣除通訊協定及錯誤碼等等...無線網路也會略小於剛所計算的值....有錯請指正,小弟只懂些皮毛而已

開eMule也只能收到低-ID,也會斷線,是AP的問題嘛?還是USB的問題,有解嗎

應該是AP那邊幾個emule使用的port沒打開的關係吧。