Design of hospital wireless network system

WLAN

Effectively overcome the disadvantages of wired network , utilize Tablet wireless computer and Mobile trolley Collect vital signs data anytime, anywhere 、 Medical data query and entry 、 Doctor rounds 、 Bedside care 、 Call communication 、 Patient identification code identification, etc , Give full play to the efficiency of medical information system , Highlight the technical advantages of digital hospitals . meanwhile , Perfect wireless coverage , It can also improve patients' satisfaction with hospital services .

Demand analysis

The demand analysis of hospital wireless coverage is as follows ：

1、 Need to meet Wireless full coverage in all areas , Such as registration office , Outpatient department, inpatient department and other areas ;

2、 High mobility , It needs to meet the automatic switching of access points during the mobile process of wireless terminals , Business line , namely Wireless roaming ;

3、 Uneven distribution of terminals , Need to meet Automatic load balancing , Ensure the use effect of wireless network ;

4、 Wireless network is mainly for Doctors' internal office use and patients' Internet ,AP Need to be Support setting multiple SSID（ Service set identity ）, And Different SSID Have different network permissions ;

5、 For Wireless High security requirements , Especially the office network , Must be carried out Identity Authentication , Restrict illegal terminal access , If MAC Address the authentication ;

6、AP The appearance should be beautiful , Need support PoE Power supply , Meet the needs of fire protection and wiring ;

7、AP Support Unified management 、 To configure , And monitor each AP Working state , Simple operation and maintenance ;

The design principle of the whole network

1、 Standardization and openness

Only systems that support standardization and openness , To support collaboration with other open systems , Adopted in the network Hardware equipment and software products should support international working standards or de facto standards . The network adopts an open architecture , Easy to expand , Make the relatively independent subsystem easy to combine and adjust .

2、 Progressiveness and high reliability

All constituent elements of the system should fully consider its progressiveness . We should not blindly pursue practicality and ignore the advanced , Only by combining the most advanced technology today with our practical application requirements , In order to obtain the maximum system performance and benefits . Reliability is also one of the important criteria to measure a computer application system . Ensure the stability of individual devices in the system network environment 、 Under the premise of reliable operation , We also need to consider the overall fault tolerance of the network 、 Safety and stability , So that the system can be quickly repaired in case of problems and faults .

3、 Maintainability and manageability

Interconnection equipment in the whole information network system , Should be Easy to use 、 It's easy to learn , and Easy to maintain . For complex and huge networks , It requires strong network management means , In order to reasonably manage network resources , Monitor the network status and control the operation of the network , therefore , The network device selected by the network should support multiple protocols , Administrators can easily manage the network 、 Maintain or even repair .

4、 Scalability and compatibility

The topology of the network should be scalable, that is, the network connection must be in the system structure 、 System Capacity and processing capacity 、 Physical connection 、 Product support and other aspects have the possibility of expansion and upgrading , The products adopted should comply with general industrial standards , So that different devices can be conveniently and flexibly connected to the network and meet the requirements of system scale expansion .

Network topology

Installation and deployment

The general environment of the hospital registration office is relatively empty , There are fewer barriers , Ceiling type AP Cover the diameter in the open environment 20-30 rice , The use quantity can be determined according to the scale , The distribution points are evenly distributed .

The structure of outpatient department and inpatient department is similar , The ceiling type AP Installed in the corridor , The coverage is about radius 10-12 rice , The use quantity can be determined according to the actual environment .

Program features

The scheme uses commercial wireless products to achieve coverage , Adopt wireless controller AC and FIT AP How to deploy . It has the following characteristics ：

High availability ：AP Adopt professional antenna , The transmission power is linearly adjustable , According to the actual environment , Adjust reasonably AP Transmitting power , Meet the coverage needs of different areas .

Flexible roaming ：FIT AP Wireless deployment architecture , You can set different AP Launch the same SSID, The wireless terminal is in the same VLAN The next difference AP When moving between , Can be in different AP Fast switching between , Realize cross AP Fast roaming on the second floor .

high reliability ： use FIT AP programme , Support load balancing ,AC Can dynamically adjust users in different AP Uniform distribution between , Prevent individual AP overload .

High scalability ： Support MAC authentication 、Portal Authentication and other user access authentication methods , Can be combined with external portal Server and authentication server realize SMS authentication , Wechat authentication and other authentication methods .

Easy to deploy ：AP use 86 Type panel design , Beautiful and generous , Support 802.3af standard PoE Network cable power supply , It can directly replace the original network panel , No need to rewire , Do not damage the original decoration of the room , Simple construction .

Manageability ：FTT AP Unified by wireless controller AC management , Automatic discovery and unified management AP, It can be viewed in real time AP Running state , Convenient network management and maintenance .

Equipment selection

Stable formation 、 Wireless networks that meet actual needs , It is required to select appropriate networking equipment .

Complete solutions for wireless networks include routers 、 Switch 、PoE equipment 、AP、AC Controllers and other devices , Due to the scale 、 Different needs , The equipment required in different hospital network schemes may also be different , This requires a variety of network equipment to meet the needs of differentiation .

Select wireless coverage AP when , The following should be considered ：

Environmental characteristics ： Outdoors or indoors , Terminal sparse distribution （ Warehouse ） Or high-density wireless access （ Such as the conference room 、 Multifunctional hall, etc ）.

Installation mode ： Imbibition 、 Panel or 86 Box type .

Power supply mode ： standard PoE（802.3af or 802.3at）、Passive PoE or DC（ DC power supply ）.

Coverage ： Single room 、 Multiple rooms 、 Area coverage 、 Fixed point coverage, etc .

With capacity ： Single AP Access 10 individual 、20 individual 、30 Or 50 Terminals .

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

Ordinary ceiling wireless is used in the general guest room area AP, It can meet the wireless coverage of most areas , Allow a few wireless blind areas . High end guest areas such as luxury rooms can choose panel wireless AP, Ensure the best wireless coverage , Provide the best accommodation experience . Restaurant 、 Meeting rooms and other densely populated areas , Adopt ceiling mounted dual band wireless that supports high-density access AP, Meet the needs of simultaneous multi person access .