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请教个无线网卡和路由器的问题

暴走的13使徒@2014-05-02 20:56

最近升级了宽带从原本10Mbps到30Mbps
因为我08年买的无线路由54M的用到现在
提速后路由器无线WIFI 新老两台笔记本接受都只能跑到2MS实际
而插线的话都能跑到全速30Mbps的3.8MS
路游产品标着54M 至少得能传输6到7MS吧怎么WIFI情况下只能到2MS 难道这54M是指的只是有线？

下午买了TPLINK的新路由器 300M
设置好后新笔记本和手机都能测速都能达到宽带30M的 3.9MS全速
但是老本WIFI情况下还是那样子2MS 这是为何老本还是只能插线才能跑全速

难道是和无线网卡的802.11a b g n参数有关吗
abg最高速率难道只能到2MS？

我刚查了下两台本的无线网卡支持
08年的东芝本支持802.11a/g无线协议
12年的宏碁支持802.11b/g/n无线协议

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atkio@2014-05-02 22:02

维基如是说
In June 2003, a third modulation standard was ratified: 802.11g. This works in the 2.4 GHz band (like 802.11b), but uses the same OFDM based transmission scheme as 802.11a. It operates at a maximum physical layer bit rate of 54 Mbit/s exclusive of forward error correction codes, or about 22 Mbit/s average throughput.[13] 802.11g hardware is fully backward compatible with 802.11b hardware and therefore is encumbered with legacy issues that reduce throughput when compared to 802.11a by ~21%.

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暴走的13使徒@2014-05-02 22:12

别用英语。。。
新本无线情况下能满速
再因为电信官方测试网站JAVA 不支持手机平板
所以手机和IPAD我用迅雷下离线文件速度能满
现在看下来就这台老本不行一直维持在1.5MS到2MS之间

看下来我推测是不是老网卡传输速率的瓶颈造成的？

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灭虫高手@2014-05-02 22:38

Wireless Networking Standards

The following are the most commonly used wireless network technologies:
■ 802.11b The original and still most common wireless network type. 802.11b advertises
a theoretical network throughput of 11 Mbps, but 3–4 Mbps is more realistic. Because
802.11g and 802.11n are backward-compatible with 802.11b, an 802.11b client can connect
to almost any network (albeit at the slower 802.11b speed).

NOTE 802.11
An 802.11 standard preceded 802.11b, but it was never widely used.

■ 802.11g An update to 802.11b that advertises a theoretical network throughput of 54
Mbps (with 10–15 Mbps realistic bandwidth under good circumstances). You can use
802.11g network access points in one of two modes: mixed (which supports 802.11b clients
but reduces bandwidth for all clients) or 802.11g-only (which does not support
802.11b clients but offers optimal bandwidth).
■ 802.11n An update to 802.11g and 802.11b that provides improved range and performance
claims of 250 Mbps (with a much smaller realistic bandwidth). In addition to
providing backward compatibility with 802.11b and 802.11g, this standard is backward
compatible with 802.11a. As of the time of this writing, 802.11n has not yet been
standardized; however, many vendors have offered wireless access points with support
for “pre-N” standards.————————(Here means aroung year2008~2009.——俺注)
■ 802.11a An old standard that uses the 5.4 GHz range instead of the 2.4 GHz range used
by 802.11b, 802.11g, and 802.11n. 802.11a originally competed with 802.11b, but it was
not as popular and has now been largely abandoned.
Many vendors offer wireless access points that include proprietary extensions that offer better
network performance when used with wireless network adapters from the same vendor.
Although these proprietary extensions can improve performance, they don’t work with network
adapters made by other vendors.

——收费图书。看到的骚年你可能已经违法了。

土豪们吃不惯的怎么可以不使劲灌呢？！
日语考级之类这里各种放闪光弹的，我们呃..各非偏日人士？还不是出力地一个一个啃假名。
有啥不懂的，

来让大叔们调教

[ 此帖被灭虫高手在2014-05-04 10:33重新编辑 ]

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atkio@2014-05-02 22:55

abg最高速率难道只能到2MS？

基本就是这样了。
上高速用n或者ac吧

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xjj4@2014-05-02 23:16

我只知道，一般无线的速度都是在无干扰环境下的理论值。我一般都是这样算的，比如54，就是54/8 约等于6.75 再除以2，约等于3.3，这个数值因该是把笔记本放在路由边上时候的数值。然后再算上距离的衰减，比如你隔墙，换了个房间，一般能有2-2.5就算是正常值了。而且你不能只看下载，他整个通道才是54m，而不是单纯下载。wiki上有理论值和实际值的表格的。好像就是标称差不多除以2。
有线你这算法也不对吧。你有线有好几个个部分，你电脑接口的带宽能力，路由器接口的带宽能力，芯片的能力，电脑内部的传输能力。再旧以前的网口应该都是100m的，电脑看主板，好的1000，一般性的也得100，网口不是瓶颈，路由内部一般也没什么问题的。主要还是电脑的处理能力，早期的电脑内部传输133m的pata外部我记得我最老的80g硬盘才20m的速度···所以应该是和路由器没关系的。

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暴走的13使徒@2014-05-03 01:21

我插网线老本能全速 30M

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atxavier@2014-05-03 09:22

测过多个无线G网,无一例外最高只能到15mbps.
果断换N网网卡吧

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s20021106@2014-05-03 16:24

簡單來說

你的舊本子的wifi系統是舊版本
只能去到2M左右

方法是無法解決
除了換上本子wifi系統

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暴走的13使徒@2014-05-03 22:01