Introduction to the wireless network bridging solution

In the field, or in intensive industrial areas and enterprise fields, we will all use wireless network bridging solutions for network construction. So what knowledge should we have first, then how to plan, and what are the problems that need attention? This article will give you one by one.

Wireless Network bridging solution Overview

Wireless Network outdoor point-to-point, point-to-point, relay bridging is designed to connect two or more networks (especially in different buildings) outdoor wireless bridges can provide high data rates and ultra-large capacity for data-intensive businesses or online audio-visual applications. /TI lines provide faster transmission speed, wireless Bridges can connect branches into a local network, allowing enterprises to easily implement ERP, broadband sharing, and video monitoring, voice access. Currently, wireless networks can provide users with up to Mbps of bandwidth ｡

Wireless LAN system composition

1. Outdoor wireless bridges. Two or more outdoor wireless bridges can be used to connect the local networks separated from each other ｡

2. high-gain outdoor orientation or omnidirectional antenna. For wireless network interconnection of remote outdoor sites, the high-gain outdoor orientation or omnidirectional antenna must be used together to achieve point-to-point connection, omnidirectional antennas support point-to-point connections ｡

3. lightning arresters. In order to ensure the normal operation of the wireless network system during thunderstorms, lightning arresters must be used. When the feeder system is struck by lightning strikes (or there is a high-voltage magnetic field) that day, the surge will not enter the system equipment, ensure the safety of system equipment and work by setting off the surge in time ｡

4. Power Amplifier. In some cases, all power amplifiers are needed to improve remote coverage. We can use a MW power amplifier ｡

The above is an introduction to the system composition of the wireless network bridging solution. After a brief introduction, we can see that there are many factors to consider when creating an outdoor bridging network, next, we will introduce the requirements in the wireless network bridging solution.

 

Antenna installation requirements

Use a fixed bracket to install an outdoor antenna or an outdoor omnidirectional antenna and an outdoor chassis ｡

1. the antenna installation must be around 1.5 m away from the bracket and ensure that the communication direction is not blocked by the bracket. In some cases, a lightning rod must be welded to the bracket top, its height is about 0.5 above the top of the omnidirectional antenna ｡

2. In some cases, a grid parabolic antenna with a larger diameter should be installed, and the specific requirements of the mounting bracket should be determined according to the field conditions ｡

Device installation instructions in the wireless network bridging solution

1. indoor part: the indoor part consists of the indoor power supply module and 24 v dc power supply, the indoor power supply module is connected to one end of the computer, HUB, ROUTER or SWITCH, when connected to the computer using cross RJ-45 line, other use of direct RJ-45 wire. One end is connected to 24 v dc power supply, one end through the direct RJ-45 wire to the outdoor part of the outdoor power supply module ｡

2. Outdoor part: This part is installed on the outdoor fixed bracket, the antenna is installed on the top, the wireless bridge device and the outdoor power supply module are installed in the outdoor waterproof chassis ｡

3. connecting the outdoor part and indoor part of the RJ-45 line this RJ-45 line for the standard 8-core straight line, in outdoor installation should be protected with PVC pipe or other materials that meet the outdoor installation standards. The RJ-45 line of 1, 2, 3, 6 cores for data transmission, cores are used to provide power to the device. The 24 v dc power supply is transmitted from the room to the outdoor power supply module, and the voltage of the outdoor power supply module is converted to 12 v dc power supply to power the wireless bridge device ｡

Lightning Protection System Requirements in wireless network bridging Solutions

1. the site where the spread spectrum communication device is installed, there should be a sound lightning-proof grounding system. The lightning-proof grounding standards should comply with the YD5004-94 "Digital Microwave Relay Communication Engineering Design Specifications", YD2011 "Microwave Station Lightning Protection and Grounding Design Specifications" and YD26 "Communications Bureau (Station) interim Technical Provisions on Grounding Design, grounding resistance shall be less than or equal to. All antenna positions shall be within the protection angle of the lightning rod;

2. The bracket or tower for mounting an antenna should be well connected to the grounding system on the roof;

Preparation of power supply conditions

1. A stable power supply should be provided to the equipment room where the spread spectrum communication equipment is installed ｡

2. For an AC 5% V power supply system, the power supply voltage fluctuates within the range of + 10% to-, and the frequency is within the range of Hz to Hz ｡

3. the data room should contain a three-core AC power outlet with a ground wire for use by auxiliary equipment such as testing instruments ｡

Connection to user devices in the wireless network bridging solution

1. direct connection with PC: From the indoor power supply module to PC using a straight-through RJ-45 line connected ｡

2. With HUB, switch, router connection: From the indoor power supply module to the HUB, switch, router between the cross RJ-45 line ｡

3. From the roof of the outdoor fixed box to the indoor power supply module using through the RJ-45 line connected, RJ-45 wire set PVC pipe Protection Line ｡