With the advancement of clinical informatization, hospitals are gradually achieving paperless, filmless and wireless operations. With the continuous maturation and popularization of wireless local area network technology, the application of wireless local area networks in the global medical industry has become a trend. As a supplement to the wired local area network in hospitals, wireless local area networks effectively overcome the drawbacks of wired networks. By using tablet wireless computers and mobile carts, vital sign data collection, query and entry of medical staff data, doctor rounds, bedside care, call communication, patient identification code recognition, etc. can be carried out anytime and anywhere. This fully utilizes the efficiency of the medical information system and highlights the technical advantages of digital hospitals. At the same time, the complete wireless coverage can also improve patients' satisfaction with hospital services.

Demand analysis

The demand analysis for hospital wireless coverage is as follows:

1. It is necessary to ensure full wireless coverage in all areas, including the registration area, outpatient department and inpatient department, etc；

2. There is a high level of mobility among people, and it is necessary to ensure that wireless terminals can automatically switch to a new access point during movement, maintaining uninterrupted services, that is, wireless roaming；

3. The terminal distribution is uneven, and it is necessary to meet the requirements of automatic load balancing to ensure the performance of the wireless network；

4. The wireless network is mainly used for internal office work of doctors and for patients to access the internet. The access points (APs) need to support the setting of multiple SSIDs, and different SSIDs should have different network permissions；

5. High requirements for wireless security, especially for office networks, necessitate identity authentication and the restriction of unauthorized terminals from accessing the network. For example, MAC address authentication can be adopted；

6. The AP should have an elegant and stylish appearance, and it must support PoE power supply to meet the requirements of fire protection and wiring；

7. AP supports unified management and configuration, and can monitor the working status of each AP in real time. The operation and maintenance is very simple；

Topology of networks

The environment at the hospital registration desk is generally relatively spacious with fewer obstructions. Ceiling-mounted APs can cover a diameter of 20-30 meters in such an open space. The number of units to be used can be determined based on the scale, and the distribution of the points should be evenly spaced. As shown in the figure below:

Registration Counter Layout

The structure of the outpatient department and the inpatient department is quite similar. Ceiling-mounted APs can be installed in the corridors, with a coverage area of approximately 10-12 meters in radius. The number of units to be used can be determined based on the actual environment. As shown in the following figure:

Layout of the outpatient and inpatient buildings' APs

The solution uses commercial wireless products to achieve coverage and is deployed using the wireless controller AC and FIT AP methods. It has the following features:

High availability: The AP uses professional antennas and the transmission power can be adjusted linearly. It can be reasonably adjusted according to the actual environment to ensure the coverage requirements for different areas.

Flexible roaming: The FIT AP wireless deployment architecture allows different APs to broadcast the same SSID. When wireless terminals move between different APs within the same VLAN, they can quickly switch between APs and achieve cross-AP Layer 2 fast roaming.

High reliability: The FIT AP solution is adopted, supporting load balancing. The AC can dynamically adjust the even distribution of users among different APs, preventing any single AP from being overloaded.

High scalability: Supports various user access authentication methods such as MAC authentication and Portal authentication. It can be combined with external Portal servers and authentication servers to implement multiple authentication methods including SMS authentication, WeChat authentication, etc.

Easy to deploy: The AP adopts the 86-type panel design, which is elegant and stylish. It supports 802.3af standard PoE network cable power supply and can directly replace the original network panel without the need for re-wiring. It does not damage the original decoration of the room and the construction is simple.

Manageability: The FTT AP is uniformly managed by the wireless controller AC. It automatically discovers and uniformly manages the APs, allowing for real-time monitoring of the APs' operating status, facilitating network management and maintenance.

To establish a stable and practical wireless network, it is necessary to select appropriate networking equipment. The complete solution for a wireless network includes routers, switches, PoE devices, APs, AC controllers, etc. Due to differences in scale and requirements, the equipment needed in different hospital network solutions may also vary. This requires a diverse range of network equipment to meet differentiated needs.

When selecting an AP for wireless coverage, the following factors should be taken into consideration:

Environmental characteristics: Outdoor or indoor, with sparse terminal distribution (such as in warehouses) or high-density wireless access (such as in meeting rooms, multi-function halls, etc.).

Installation method: Ceiling-mounted, panel-mounted or 86-pin box-mounted.

Power supply method: Standard PoE (802.3af or 802.3at), Passive PoE or DC (direct current power supply).

Coverage scope: single room, multiple rooms, area coverage, fixed-point coverage, etc.

Bandwidth capacity: Each AP can connect 10, 20, 30 or 50 terminals.

Take the hotel environment as an example. Different products can be used in different areas:

For the general guest rooms, ordinary ceiling-mounted wireless APs are selected, which can provide wireless coverage for most areas. A few wireless blind spots are allowed to exist appropriately. For the luxurious guest rooms and other high-end guest areas, panel-type wireless APs are used to ensure the best wireless coverage effect and provide the best accommodation experience. In densely populated areas such as dining areas and meeting rooms, ceiling-mounted dual-band wireless APs that support high-density access are adopted to meet the demand for simultaneous multi-user access.

Dongguan Tuqian Technology Co., Ltd.is a high-tech product research and development enterprise. The company responds to market demands and has developed wireless transmission products suitable for various environments, providing wireless transmission solutions for them. The company integrates the research, production and sales of wireless transmission equipment, and has a professional installation service team and a customer service department. Our main products, such as mobile video wireless transmission equipment, 3G/4G wireless transmission equipment, and digital bridge wireless transmission equipment, accept special customization requirements from customers. We serve hundreds of large and medium-sized enterprises in China; the ultimate wireless transmission solution is applied in dozens of countries and regions around the world. We adhere to the customer-centered approach and the spirit of striving, continuously innovate based on customer needs, and have won the respect and trust of customers. Based in Shenzhen, we look forward to the global market.