When station A sends data to the AP, it might not know that the station B is already using the channel. If these two stations send data at the same time, collisions may occur when both sets of data arrive at the AP at the same time, resulting in a loss of messages for both stations.

RTS/CTS is designed to prevent collisions due to hidden nodes. An RTS/CTS defines the biggest size data frame you can send before an RTS (Request To Send)/CTS (Clear to Send) handshake is invoked.

When a data frame exceeds the RTS/CTS value you set (between 0 to 2432 bytes), the station that wants to transmit this frame must first send an RTS (Request To Send) message to the AP for permission to send it. The AP then responds with a CTS (Clear to Send) message to all other stations within its range to notify them to defer their transmission. It also reserves and confirms with the requesting station the time frame for the requested transmission.

Stations can send frames smaller than the specified RTS/CTS directly to the AP without the RTS (Request To Send)/CTS (Clear to Send) handshake.

You should only configure RTS/CTS if the possibility of hidden nodes exists on your network and the "cost" of resending large frames is more than the extra network overhead involved in the RTS (Request To Send)/CTS (Clear to Send) handshake.

If the RTS/CTS value is greater than the Fragmentation Threshold value (see next), then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS size.

Note: Enabling the RTS Threshold causes redundant network overhead that could negatively affect the throughput performance instead of providing a remedy.

Fragmentation Threshold

A Fragmentation Threshold is the maximum data fragment size (between 256 and 2432 bytes) that can be sent in the wireless network before the AP will fragment the packet into smaller data frames.

A large Fragmentation Threshold is recommended for networks not prone to interference while you should set a smaller threshold for busy networks or networks that are prone to interference.

131

Page 130 Page 132
Page 131
Image 131
ZyXEL Communications MWR102 manual Fragmentation Threshold, 131
Page 130 Page 132

MWR102 specifications

ZyXEL Communications MWR102 is a versatile portable wireless router designed to provide reliable internet connectivity for mobile users. This compact device caters to individuals and small teams who require internet access on the go, making it an ideal solution for business travelers, outdoor enthusiasts, and temporary setups in various environments.

One of the standout features of the MWR102 is its 3G and 4G LTE compatibility, allowing users to connect to mobile broadband networks with ease. This ensures that users can enjoy fast internet speeds and stable connections, regardless of their location. Additionally, the router supports multiple wireless standards, including 802.11b/g/n, ensuring compatibility with a wide range of devices such as smartphones, laptops, and tablets.

The MWR102 is equipped with a built-in battery that provides up to 5 hours of operation on a single charge, making it a perfect companion for situations where access to a power source is limited. It also features a USB port that enables users to charge devices like smartphones or tablets, adding to its functionality as a portable hub. The compact design of the MWR102 makes it easy to carry in a bag or pocket, ensuring that users can stay connected wherever they go.

Another significant aspect of the MWR102 is its ease of use. The device can be set up quickly without the need for complex configurations. It also includes a simple web-based interface that allows users to manage their network settings with minimal hassle. The router supports up to 10 users at a time, making it suitable for small groups needing simultaneous access to the internet.

Security is also a priority with the MWR102, which offers WPA2 encryption to protect data transmission over the wireless network. This feature is essential for ensuring a secure connection, particularly when accessing sensitive information online.

In summary, ZyXEL Communications MWR102 is a feature-rich portable wireless router that combines 3G/4G connectivity, battery operation, and robust security in a compact design. It is an excellent choice for anyone looking for reliable internet access while on the move. Whether for business or leisure, the MWR102 ensures that staying connected is convenient and straightforward.
Top Page Image Contents