EVDO, EV-DO, and EV (Evolution Data Optimized) are all common terms for a frequently used type of router. EVDO technology incorporates the use of a wireless data signal (via radio signals) which often provides access to broadband Internet to the user. There are various complicated descriptive of how the EVDO router functions. Some of the techniques that are used for this device to operate properly include CDMA and TDMA (code division/time division multiple access).
EVDO routers are 3GPP2 and are also categorized with other CDMA2000’s. Cell phone providers, especially those that have used CDMA networks in the past, have been taking advantage of EVDO immensely. Another example of a strong use for EVDO technology would be a satellite phone network (Globalstar) which incorporates EVDO to their network.
The Design of EVDO Routers
EVDO routers were designed to be evolutionary in the CDMA2000 series. They were built up to offer faster data transfer and being compatible in combination with voice services. EVDO routers were designed to work with a 1.25MHz bandwidth. The structure of the particular channel the router operates on is rather unique though. Also, the network uses packets so there are quite a few complications eliminated which exist in circuit switched networks.
What Makes the Channel Structure Unique?
One of the few things that set EVDO routers apart from other types of routers is the channel structure that is implemented in these devices. Basically, the channel used with EVDO is nowhere near the same as a typical 1xRTT channel. The main difference is that forward linking is accomplished as the channel is Time Multiplexed – meaning that the forward channel is used by just one mobile within a particular geographic distance. This will allow all mobile users to have a specified time slot within the forward traffic channel and when in optimal geographic areas they will receive stronger wireless signals.
How the Forward Channel Works
There are multiple time slots available within the forward traffic channel. Every time slot is 1.667ms in length. There are also overhead channels which are included within the stream. One example of one of these channels would be the Pilot which is responsible for assisting the mobile in locating specific channels. Another example of an overhead channel would be the MAC which is responsible for notifying the mobile when scheduled data exists. There is also a control channel which is used for cross-network data transfer.
Choosing a Wireless EVDO Router
If you are looking for an EVDO router then you may want to consider the CradlePoint MBR1000. This particular router has been available for a few years but it is still commonly used to this day. There are similar models available as well which are worth considering. Whenever you buy a wireless router you should look at reviews found online to get an idea of how good the device really is. You want to make sure that you get the best router for your money so there are no complications and you can take full advantage of the device. The MBR1000 is a solid choice even in today’s market and it offers various features such as a shared 3G signal with certain mobile phones via USB.
The CradlePoint MBR1000 is often looked at as one of the top 3G/EVDO routers on the market. There are many options though and you may be able to find a better deal but you will need to check reviews to make sure it is a solid investment. Regardless, if you are looking to purchase a wireless router then a 3G/EVDO router would be a great choice. Take a look online at various models of EVDO routers and read some reviews before making a purchase so you get the best product possible for your money.