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网络无限 无线网络POCKET PC联网体验

本文发表在 rolia.net 枫下论坛PPC连上网络前,最多的用处就是查电话,看小说,玩玩小游戏。。。

PPC联网和PC一样有2种,一种最简单的就是通过电话线拨号上网,限于邮件,网页浏览。用PPC浏览网页是一个不太惬意的事情,因为现在很少有网站的页面是对PPC优化过的。在3.5" 240 x 320的显示屏上看网页不得不拖拖拉拉,很是费点功夫,而且电话线上网慢,等待网页慢慢的展现实在很恼火。

这几天体验了PPC的无线网络应用,应该说让我感觉到了一个PPC新的使用领域而不是单一的功能。当然无线上网和有线上网都一样,只不过连接方式不同而已。

通过PPC的网络功能目前可以实现如下的功能:
>>和台式机同步

哈哈,这个功能是我梦想的。以前在台式机或者PPC上更改联系人,安装软件等等都必须把PPC连接到插座上,用USB或者Serial口连接电脑。现在可以通过网络直接将PPC与主机相连接同步,无线网络就更不受线缆的限制。

>>使用网络通信

这个和PC功能差不多,通过PPC版的MSN,YAHOO MESSENGER,ICQ可以和PC一样和朋友保持联系。

>>通过网络访问PC的网络资源

通过截图可以看见,PPC可以通过安装专门的软件访问网络资源,使用网络中共享的文件夹、打印机等等。如果共享了软驱,光驱。。。呵呵

>>使用网络驱动

PPC的内存空间很有限,一般是64MB。扩展卡最大是IMB 1GB的MICRO DRIVE,价值600加币。。。和一个PPC的价钱相当。通过安装虚拟网络驱动程序,可台式机上虚拟一个网络扩展卡最大达到1GB的扩展卡。MP3,小电影您就随便放吧。

>>众多网络工具

现在很多供PPC使用的网络工具,包括扫描端口等等。。。

相信随着技术发展,PPC的功能将不仅仅是桌面电脑的补充。

当然使用网络也有缺点,是机器耗电量猛增。现在充满电一次最多能坚持半个小时。。。不得不到处连接电源。更多精彩文章及讨论,请光临枫下论坛 rolia.net
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  • 枫下家园 / 电脑用户 / 网络无限 无线网络POCKET PC联网体验
    本文发表在 rolia.net 枫下论坛PPC连上网络前,最多的用处就是查电话,看小说,玩玩小游戏。。。

    PPC联网和PC一样有2种,一种最简单的就是通过电话线拨号上网,限于邮件,网页浏览。用PPC浏览网页是一个不太惬意的事情,因为现在很少有网站的页面是对PPC优化过的。在3.5" 240 x 320的显示屏上看网页不得不拖拖拉拉,很是费点功夫,而且电话线上网慢,等待网页慢慢的展现实在很恼火。

    这几天体验了PPC的无线网络应用,应该说让我感觉到了一个PPC新的使用领域而不是单一的功能。当然无线上网和有线上网都一样,只不过连接方式不同而已。

    通过PPC的网络功能目前可以实现如下的功能:
    >>和台式机同步

    哈哈,这个功能是我梦想的。以前在台式机或者PPC上更改联系人,安装软件等等都必须把PPC连接到插座上,用USB或者Serial口连接电脑。现在可以通过网络直接将PPC与主机相连接同步,无线网络就更不受线缆的限制。

    >>使用网络通信

    这个和PC功能差不多,通过PPC版的MSN,YAHOO MESSENGER,ICQ可以和PC一样和朋友保持联系。

    >>通过网络访问PC的网络资源

    通过截图可以看见,PPC可以通过安装专门的软件访问网络资源,使用网络中共享的文件夹、打印机等等。如果共享了软驱,光驱。。。呵呵

    >>使用网络驱动

    PPC的内存空间很有限,一般是64MB。扩展卡最大是IMB 1GB的MICRO DRIVE,价值600加币。。。和一个PPC的价钱相当。通过安装虚拟网络驱动程序,可台式机上虚拟一个网络扩展卡最大达到1GB的扩展卡。MP3,小电影您就随便放吧。

    >>众多网络工具

    现在很多供PPC使用的网络工具,包括扫描端口等等。。。

    相信随着技术发展,PPC的功能将不仅仅是桌面电脑的补充。

    当然使用网络也有缺点,是机器耗电量猛增。现在充满电一次最多能坚持半个小时。。。不得不到处连接电源。更多精彩文章及讨论,请光临枫下论坛 rolia.net
    • 一些截图
    • 至少介绍一下怎么个无线连接方法嘛。用的设备和技术。
      • 技术和设备:802.11b Linksys Wireless CompactFlash Card。Access Point也是Linksys的。由于PPC无线网卡的发射功率小,作用距离有限室内20米吧。如果隔的墙多还要打折。
        • 所以说现在你有个Linksys Access Point的Router坐在中间,它用WAN接口连到Cable Modem,LAN接口连到PC,然后11b无线接到你的PPC?
          • 用的是隔壁的AP,连在我的router上。就是一个AP,没有router功能。从我的router上获取IP。然后11b就直接访问AP。。。
            • 明白了!快到校园里去享受一下无线动力吧。;-) 这实际上北美校园网首先使用起来的。
              • 我们学校现在只有个计划,还没见实施呢。按照加拿大的效率,我毕业前危险。。。
                • 啊?多大已经可以在一些重要图书馆内可以使用11b了,就差买张Fi-Wi的无线网卡乐。美国的学校更在2M速度的11刚出来时就有用了。
                  • 别刺激偶了~~
                    • :D:D 那就快把网卡处理给俺吧。
                      // 放心,估计不久你就能用上了。11g已经出来了,AP的成本也在降。。。
                      • 那我更受刺激了,11g啊,这11b的卡不就成了鸡肋@!@
                        • 11g也就才20M+速度。多大现在是只能用11b,慢的快的都不接受。// 内附一份Market Report for 802.11
                          本文发表在 rolia.net 枫下论坛Wireless hits notes in 802.11a, b and g

                          By Ben Charny
                          Staff Writer
                          June 24, 2002, 4:00 AM PT

                          Millions of people and businesses have installed 802.11b networks--also known as Wi-Fi networks--in the past couple of years, making the technology one of the few bright spots in an otherwise bleak market for PC hardware.

                          For about $200, an 802.11b network allows Net access within a 300-foot radius, with information moving at up to 11 megabits per second. Considering that most home broadband connections download data at up to 7.1mbps, that speed would seem to be plenty.

                          So why are manufacturers pushing a much faster, and more expensive, version, called 802.11a? The answer is twofold: 802.11a networks should find greater acceptance in business and, secondly, in the digital home of the future, where the PC will be used as a server to beam information to a range of devices such as TVs and stereos.

                          802.11a has three main advantages. Chiefly, it offers better security features, a top concern among businesses that have passed on 802.11b. In addition, 802.11a can transmit data up to five times faster, and it can handle more users simultaneously. However, 802.11a equipment doesn't work on 802.11b networks. For example, a person with an 802.11a card in his or her laptop cannot access a home network using an 802.11b base station.

                          As a result, 802.11a "will show up in the offices not concerned with backward compatibility; it'll be a new deployment in a high-density area with lots of file sharing going on," said Dennis Eaton, senior strategic marketing manger at Intersil, whose designs are licensed to most of the world's 802.11 makers.

                          A third wave of 802.11 technology is already cresting: 802.11g, which boasts the speed of "a" and is more secure than "b," and has the added benefit of being backward compatible to 802.11b--something the much-touted 802.11a networks are not. However, 802.11g only operates on the same three crowded channels as 802.11b, compared with 802.11a, which runs on 12 channels and reduces interference issues.

                          Wireless networks using 802.11 standards--regardless of which one--will continue to reign as the champion of home networking, most believe.

                          The biggest challenger has been identified as Bluetooth, a wireless standard used to emit a very powerful signal but over a range far shorter (only 30 feet) than Wi-Fi's. Mike Hogan, general manager of Texas Instruments' wireless networking business, is among those who believe Bluetooth will never pose a serious threat to 802.11 equipment.

                          The main reason is that 802.11 was originally built to work specifically with broadband transmissions, while Bluetooth was created to wirelessly connect a phone and headset and other short-range devices such as notebooks, handhelds and printers.

                          "Trying to extend Bluetooth to be a competitor with 802.11 is an unnatural act," Hogan said.

                          Another distant challenge is posed by ultrawideband (UWB) technology, which can transfer at speeds of between 400mbps and 500mbps over distances of about 15 feet. It uses a different technique for transmitting data, and it sends many short, sharp pulses of data over a wide frequency, allowing the transfer of large amounts of data over short distances using a relatively low amount of power.

                          But the technology has been held back by regulatory concerns. The Federal Communications Commission has allowed only limited use because UWB works across wide slices of the radio spectrum that are already licensed to hundreds of government and commercial users. Critics say its powerful signal could cause interference with such devices as satellite navigation tools or government airport radars.


                          -- The tandem strategy
                          Although the technology industry is infamous for rapidly making older technologies obsolete, it appears that the already widely used 802.11b technology is deeply entrenched and unlikely to be discarded even as 802.11a catches on.

                          Although it's true that 802.11a equipment doesn't work on 802.11b networks, that may change as a result of some strong-arming on the part of Microsoft. The software giant will give its coveted Window Hardware Quality Labs (WHQL) seal of approval for the next generation of Windows software only to Ethernet cards that support both 802.11a and 802.11b networks, said Warren Barkley, Microsoft's program manager for wireless and mobility.

                          "We see both .11a and .11b in the future together, and we think of that as a way for seamless roaming," he said.

                          Microsoft isn't alone in seeing combination cards as the key to 802.11a's future. Equipment based on just 802.11a will be manufactured and sold, likely ending up in the offices of major businesses installing a wireless network for the first time. But most industry insiders see 802.11a networks living in tandem with 802.11b in order to not abandon the 15 million to 30 million 802.11b wireless networks.

                          "The future for 'a' is in combination," said In Stat/MDR wireless analyst Alan Nogee.

                          Combination networks are more costly than 802.11b networks, but "anyone who wants to deploy wireless local area networks will be interested," Intersil's Eaton said.

                          Major wireless equipment makers such Atheros Communications, Intersil, Agere Systems, Broadcom and Texas Instruments have already begun making 802.11 chipsets that support each of the standards and scenarios. And while wireless equipment based on the 802.11g standard is not on the market yet, major chipmakers are producing chips that use the 802.11g standard.

                          The competing technologies are causing headaches for the growing number of companies trying to piece together a patchwork of wireless LANs (local area networks) in coffee shops, hotels and other public areas to create a nationwide wireless network.

                          One such company is Boingo Wireless. The company makes deals with other companies that have set up their own 802.11b networks in places like airport lounges and hotel lobbies. Boingo then sells customers access to more than 600 of these Wi-Fi networks and gives the network owners a slice of any revenue from a subscriber.

                          Boingo Wireless users can already use an 802.11a network if they have the appropriate equipment, said spokesman Christian Gunning. The company is leaving it up to the operators of the smaller networks to make their own decisions on which of the scenarios to go with, Gunning said.更多精彩文章及讨论,请光临枫下论坛 rolia.net
                          • 慢慢来吧。11b离淘汰还早,不过通过11b看视频文件还是不行,有延迟。225kbytes采样率的wma图像要间断停顿,115的稍微好些。
                    • 嘿嘿, York U整个校园里已经实现了!
                      • 都麻木了@_@
                        • 还是free的! 俺准备cancel俺的T1连接了, 用Free 的Wireless.
                          • 不太可能,老大。Wi-Fi校园网一般只覆盖某些图书馆,教室的某些搂面,不会覆盖到住宿区的。校园内部的大草坪估计都不行。
            • 如果多于一个的Wi-Fi终端同时访问AP,AP应该可以从Router那里拿到不只一个的IP吧?
              • 理论上是这样的。