Three-dimensional cellular network improves enterprises' wireless office efficiency (1)

Due to the convenience of wireless Internet access, enterprises are increasingly inclined to adopt wireless network technology when deploying networks. However, infinite network technology has a signal limitation. That is to say, a wireless router can only provide network connections for clients with signal coverage. Therefore, when deploying a wireless network, you must carefully plan the location of the wireless router and try to make the coverage match the required range.

I. cellular effect of wireless signals

If you do not consider other factors, the coverage of a wireless router signal is a ball centered on a wireless router. Generally, network administrators call the spherical area covered by wireless signals as a honeycomb. As shown in, it is a cell formed by three wireless routers. Now, the network administrator's job is to place these three cells to improve the coverage of wireless signals, so that enterprise users can enjoy unlimited Internet access.

Ii. precautions during cellular deployment

1. the honeycomb is three-dimensional, not two-dimensional.

Without building blocks, wireless signals may make a sphere around an omnidirectional antenna. Note that it is not a plane. That is to say, the wireless signal is three-dimensional, not two-dimensional. In multi-storey offices, the coverage may include the floors above and below. In actual work, many network administrators often ignore this content, and the result may lead to wireless signal conflicts. For example, a wireless router is deployed in both the upper and lower offices. Which router will the client connect to when the user takes his laptop downstairs to the upstairs office?

In fact, as long as the wireless signal of the wireless router downstairs can be transmitted to the upstairs, then the client moves to the upstairs instantly, then it is still connected to the downstairs wireless router. At this time, although the signal of the downstairs wireless router is already very low, such as only one signal, and the signal of the upstairs wireless router is very good, it is full. However, the client still does not automatically connect to a wireless network with strong signals. Therefore, if an enterprise has multiple wireless cells, you need to consider the impact of mobile client location on wireless signals. You must know that wireless cellular networks are three-dimensional, and sometimes their tentacles can grow very long. In this case, the network administrator needs to consider how to select a wireless network when the wireless cell overlaps. Does it sacrifice the speed to connect to the original wireless router, or is it a wireless router with a good signal when the camera is disconnected? The network administrator needs to consider this issue.

2. Properly overlap the cells.

It is a good method to plan the AP Location Based on the floor plan. However, it should be noted that the client may constantly move. Such as walking from your office to the meeting room. Therefore, the network administrator should consider the relationship between the employee's moving route and the cellular network. It is best to consider that there is a certain overlap between cells on the routes that must be migrated. As shown in, I use three cells to overlap each other to ensure that the client has wireless signals during the process of moving. In fact, this principle is very simple, just like a cell phone signal. If a mobile phone signal is available only at a fixed position, it will obviously reduce the use value of the mobile phone.

For this reason, I believe that wireless signal cellular networks must overlap during planning. So where should we consider overlap? This mainly depends on the expected Mobile Location of the enterprise client. That is to say, the network administrator should analyze the mobile track of the client based on the deployment of the Enterprise Office in advance. For example, between an employee's office and a meeting room (an employee may have to take a laptop to a meeting room), and between a manager and a general manager's office (the manager may take a notebook to show the boss some content. Draw the expected moving trajectory on the drawing, and then design the placement location of the Wireless Router Based on the expected moving trajectory. Only in this way can clients enjoy the wireless network while moving. In particular, the popularization of Enterprise Information Office requires more consideration of network connectivity.

For example, the sales manager opens a file on the network file server and sends it to the general manager. If the client is disconnected during the process of moving, the file must be re-opened after obtaining the information from the general manager's office. Or an error occurs when the file is saved after modification. To this end, when designing a wireless network, the network administrator must ensure that the wireless network's cellular network can achieve a certain degree of coverage, so as to ensure that the network administrator has always had a signal while moving. In addition, you must note that the client can freely switch between multiple wireless routers. As shown in, the client can move freely after connecting to a wireless router.

When the client moves from one cell to another, it automatically and quickly connects to the other wireless router. This is a professional term called roaming. In the process of roaming, the client must be able to ensure that the existing network connection is not interrupted. That is to say, before sending roaming, the data sent by the client will also be retransmitted from the original wireless router to the new wireless router. This process should be transparent to users. This minimizes the possibility of sending or receiving data loss during roaming. This is like a mobile phone communication. Pay attention to signal continuity at the intersection of different signal networks.