CN113316209A - WiFi roaming method and device of mobile medical care terminal - Google Patents
WiFi roaming method and device of mobile medical care terminal Download PDFInfo
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- CN113316209A CN113316209A CN202110578006.7A CN202110578006A CN113316209A CN 113316209 A CN113316209 A CN 113316209A CN 202110578006 A CN202110578006 A CN 202110578006A CN 113316209 A CN113316209 A CN 113316209A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a WiFi roaming method and a WiFi roaming device of a mobile medical care terminal, which comprise a system setting program, the mobile medical care terminal and a WiFi ap assembly; establishing an optimal AP connection list of each working position in advance by utilizing the known area position and AP deployment information of the hospital; when the roaming switching is actively triggered, the signal strength of each AP does not need to be compared, so that the faster roaming switching is realized, and the waiting time of medical care for network transmission abnormity is reduced; according to the distribution conditions of the APs and sickbed beds in the sickrooms, the optimal connection APs of each working place are set in a balanced mode, and network blockage of a single strong signal AP is avoided; when a network fault occurs, the fault AP is quickly positioned according to the working place of the partition number, so that the problem is quickly checked conveniently.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to a WiFi roaming method and a WiFi roaming device of a mobile medical care terminal.
Background
The mobile medical care terminal (PDA, flat panel, all-in-one machine and mobile cart) is widely applied to medical institutions, is connected with hospital information systems (HIS, EMR and the like) through a WiFi network, extends the medical information systems to sickbeds, and realizes various mobile medical applications such as mobile medical care, mobile ward-round, vital sign acquisition and electronic medical record writing.
A typical medical ward occupies the area from half floor to the whole floor, and is provided with 30-60 sickbeds which are distributed in 10-30 sickrooms and are provided with a nurse station, a doctor office and a corridor. There are two main networking modes for implementing WiFi signal coverage of the whole ward. One is to deploy multiple WiFi APs (access points) plus WiFi AC (controller) controllers, implementing WiFi roaming by setting the APs to the same SSID and password; the other is to spread the WiFi signal to the nurse station, each ward and all areas requiring WiFi access by deploying a high power WiFi base station and introducing a feeder.
There are two main problems with the WiFi networks of current medical institutions:
(1) due to the difference of the ward building structure and the WiFi network mode and the limitation of the implementation cost, the two networking modes (the AP + AC and the base station + feeder mode) have WiFi signal blind areas with different degrees, and the problem of network disconnection caused by insufficient signal intensity of a local area is one of the main reasons for influencing the experience of the mobile medical care terminal and the application user.
(2) For the first networking mode (AP + AC), medical care is in different ward studios, and the mobile medical care terminal needs to perform roaming switching between different APs. WiFi chips and hospital wireless APs adopted by the mobile medical care terminals are all from different manufacturers, the roaming strategies have compatibility problems of different degrees, the roaming threshold value is not set reasonably, and the problems that terminal roaming is slow, connection AP signals are weak, connection is caused, the network cannot be accessed, and long-time network transmission terminals are caused exist in practical application. The work intensity of medical staff is very strong, and the broken net exceeds 5 seconds, which may cause the interruption of medical work and cause clinical complaints.
When the problem that the network is broken and the connection can not be realized, the treatment mode of the current medical care in the actual work mainly comprises the following steps:
(1) walking out of signal blind areas, such as walking from a hospital bed to a region with stronger signals in a corridor,
(2) and manually operating the mobile medical care terminal, opening the terminal network setting, and restarting the network setting.
Both the two methods are time-consuming and the second method has high requirement on nurse training and needs nurses to have good matching degree.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a WiFi roaming method and device of a mobile medical care terminal. Establishing an optimal AP connection list of each working position in advance; when the roaming switching is actively triggered, the signal strength of each AP does not need to be compared, so that the faster roaming switching is realized, and the waiting time of medical care for network transmission abnormity is reduced; according to the distribution conditions of the APs and sickbed beds in the sickrooms, the optimal connection APs of each working place are set in a balanced mode, and network blockage of a single strong signal AP is avoided; when a network fault occurs, the fault AP is quickly positioned according to the working place of the partition number, so that the problem is quickly checked conveniently.
In order to achieve the purpose, the invention adopts the following specific scheme:
the invention provides a WiFi roaming method of a mobile medical care terminal, which comprises the following steps:
s1, dividing regions and marking positions;
s2, collecting the signal strength RSSI of all APs in each area;
s3, establishing a mapping table of each area and the preferred AP;
s4, writing the mapping table into all the mobile medical care terminals;
and S5, discovering the abnormal network transmission and triggering roaming switching.
Further, in step S1, the identification position is to print the position identification information as a two-dimensional barcode label and paste it at the corresponding position.
Further, step S2 specifically includes the following steps:
s21, counting all APs of the target SSID in the area, and naming the identifier;
s22, establishing a mapping table of each AP and the unique physical address thereof, so as to find the corresponding unique physical address according to the name of the AP;
s23, detecting and recording the signal strength of AP capable of detecting the specified SSID respectively for each zone position.
Further, step S3 specifically includes the following steps:
s31, arranging the APs which can be detected at each position according to the signal strength from strong to weak, and eliminating the APs with the signal strength lower than a threshold value; if the signal intensity of all the APs at the position is lower than the threshold value, the network coverage of the position is indicated to have a blind area, and the network coverage needs to be increased;
s32, establishing a mapping table of each position and AP meeting the signal strength requirement, and setting the maximum number of the selectable connected APs in each place;
and S33, counting the number of the positions of the first preferred connection of each AP, and adjusting the sequence of the preferred APs to ensure that the number of the positions of each AP as the first preferred mapping is kept balanced.
Further, step S4 specifically includes the following steps:
s41, importing the mapping table of the position and the AP and the mapping table of the AP and the unique physical address into a system setting program;
s42, the system setting program sends the mapping table of the position and the AP and the mapping table of the AP and the unique physical address to the mobile medical care terminal program;
and S43, the mobile medical care terminal program writes the mapping table information into a Flash memory so that the mapping table information is permanently stored.
Further, step S5 specifically includes the following steps:
s51, obtaining network transmission abnormal information through WiFi connection state or application program prompt;
s52, manually selecting or scanning the position bar code to automatically position the current position, and selecting to trigger the roaming switching operation;
s53, the medical care terminal program is moved, the position and AP mapping table is inquired according to the positioned current position information, a first preferred AP is found, the inquired unique physical address of the AP is used as a parameter and sent to the WiFi module, and the WiFi module is started to reconnect the AP with the designated physical address;
s54, if the first preferred AP still can not be accessed after being successfully connected, switching to a second or a third AP in sequence until the network transmission is normal; and if all the mapping APs of the position cannot access the network, informing the information center to troubleshoot the fault. The invention also provides a WiFi roaming device of the mobile medical care terminal, which comprises:
the system comprises a system setting program, a mobile medical care terminal and a WiFi ap component;
the mobile medical care terminal comprises a mobile medical care terminal program, a flash storage module and a WiFi module;
the system sets a program, and sends a position and AP mapping table, an AP and a unique physical address mapping table to a mobile medical care terminal program;
the mobile medical care terminal program writes the mapping table information into a Flash memory so that the mapping table information is permanently stored;
the flash memory is used for storing a position and AP mapping table and an AP and unique physical address mapping table;
the WiFi module is a WiFi signal receiving device of the mobile medical care terminal and is used for connecting the mobile medical care terminal to a network;
the WiFi ap component provides WiFi signals and is composed of WiFi ap devices distributed at various positions.
Furthermore, the mobile medical care terminal also comprises one or two of a camera and a positioning chip.
By adopting the technical scheme of the invention, the invention has the following beneficial effects:
the method comprises the steps of utilizing the known regional positions and AP deployment information of a hospital to pre-establish an optimal AP connection list of each working position; when the roaming switching is actively triggered, the signal strength of each AP does not need to be compared, so that the faster roaming switching is realized, and the waiting time of medical care for network transmission abnormity is reduced; according to the distribution conditions of the APs and sickbed beds in the sickrooms, the optimal connection APs of each working place are set in a balanced mode, and network blockage of a single strong signal AP is avoided; when a network fault occurs, the fault AP is quickly positioned according to the working place of the partition number, so that the problem is quickly checked conveniently.
Drawings
FIG. 1 is a flow chart of the steps of an embodiment of the present invention;
FIG. 2 is a diagram of functional blocks of an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the following figures and specific examples.
The present invention will be described in detail with reference to FIGS. 1 to 2
The invention provides a WiFi roaming method of a mobile medical care terminal, which can be subdivided into 6 steps: as shown in fig. 1
1. Dividing a ward working area and marking the position;
2. acquiring the signal strength RSSI of all APs in each working area;
3. establishing a mapping table of each working area and the preferred AP;
4. writing the mapping table into all the mobile medical care terminal system settings;
5. discovering network transmission abnormity;
6. actively triggering roaming handover.
Step 1: dividing the working area of the ward and marking the position
1.1, dividing all areas needing wireless connection of the mobile medical care terminal according to the building design of a ward; such as a nurse station, doctor's office, ward, treatment room, dispensing room, etc.;
1.2, carrying out position name identification on each divided area, wherein the position name identification simultaneously meets simple and visual requirements, such as identifying a bed according to numbers, 01, 02,.. 60, and identifying a nurse station, a treatment room and the like by English or pinyin;
1.3, optionally, the position identification information is printed into a two-dimensional bar code label and is pasted at a position, such as a bedside card, so that the two-dimensional bar code can be positioned at a designated position more quickly when being scanned;
step 2: collecting RSSI of all APs in each working area
The AP, i.e., the wireless access point, is a creator of a wireless network, and is a central node of the network; a wireless router used in a typical home or office is an AP.
2.1, counting all the APs of the target SSID in the lesion area, and naming identifiers, such as AP1, AP 2.. AP 5;
2.2, establishing a mapping table of each AP and the unique physical address thereof, and finding the corresponding unique physical address according to the name of the AP;
2.3, selecting a mobile medical care terminal or a professional third-party network information intensity detection terminal, and respectively detecting and recording the AP signal intensity capable of detecting the appointed SSID at each area position divided in the step 1; for example, AP information detectable at location 01 is recorded as (AP1, -65dbm), (AP2, -55dbm),. · (AP4, -70 dbm);
and step 3: establishing mapping tables of various working areas and preferred APs
3.1, according to the step 2, arranging the APs which can be detected at each position according to the signal intensity, and removing the APs with the signal intensity lower than a threshold value, for example, setting the threshold value to-90 dbm; if the signal intensity of all the APs at the position is lower than the threshold value, it indicates that the network coverage of the position has a blind area, and the network coverage may need to be increased;
3.2, establishing a mapping table of each position and the AP meeting the signal strength requirement, and optionally setting the maximum number of the APs which can be connected optionally at each place, such as the maximum number of 3; the mapping table is illustrated as follows:
(01，(AP2，AP1，AP3))；
(02，(AP3，AP1，AP2))；
...
(60，(AP5，AP4))；
(HSZ，(AP4，AP2))
3.3, counting the number of the positions of the first optimal connection of each AP, optionally, adjusting the sequence of the optimal APs to ensure that the number of the positions of each AP as a first optimal mapping is balanced as much as possible;
and 4, step 4: writing mapping table into all mobile medical care terminal system settings
4.1, as shown in fig. 2, designing a system setting program on a PC computer, and importing the position and AP mapping table established in step 3 and the AP unique address mapping table established in step 2 into the system setting program;
4.2, the system setting program is connected with the wireless information terminal through a wired (such as a serial port and a USB) or a wireless network, and the position and AP mapping table, the AP and the unique physical address mapping table are sent to the mobile medical care terminal program;
4.3, the mobile medical care terminal program writes the mapping table information into a Flash memory so as to permanently store the mapping table information;
and 5: discovering network transmission anomalies
5.1, when a doctor and a nurse operate the mobile medical care terminal, network transmission abnormal information can be obtained through WiFi connection state and application program prompt;
step 6: actively triggered roaming handover
6.1, when a doctor or a nurse finds that network transmission is abnormal, the doctor or the nurse can manually select or select a scanning position bar code to automatically position the current position, and selects to trigger roaming switching operation;
6.2, the mobile medical care terminal program can inquire a position and AP mapping table according to the positioned current position information (positioning can be realized in hardware modes such as a GPS (global positioning system), a Beidou and the like, or positioning can be realized in a multi-signal mode, for example, positioning can be realized through a plurality of WiFi (wireless fidelity) signals, or positioning can be realized through scanning a position two-dimensional code or manually selecting the position because a user knows the position of the user), and a first preferred AP is found; sending the inquired unique physical address of the AP as a parameter to the WiFi module, and starting the WiFi module to reconnect the AP with the designated physical address;
6.3, the WiFi module is reconnected with the AP of the designated physical address sent by the mobile terminal program;
6.4, if the connection is successful, the network transmission is normal, and doctors and nurses can complete all subsequent operations of the position through the application program of the mobile terminal;
6.5, if the first preferred AP still cannot be accessed after being connected, switching to the second or third AP in sequence until the network transmission is normal. And if all the mapping APs of the position cannot access the network, informing the information center to troubleshoot the fault.
The invention also provides a WiFi roaming device of the mobile medical care terminal, which comprises: the system comprises a system setting program, a mobile medical care terminal and a WiFi ap component; the mobile medical care terminal comprises a mobile medical care terminal program, a flash storage module and a WiFi module; the system sets a program, and sends a position and AP mapping table, an AP and a unique physical address mapping table to a mobile medical care terminal program; the mobile medical care terminal program writes the mapping table information into a Flash memory so that the mapping table information is permanently stored; the flash memory is used for storing a position and AP mapping table and an AP and unique physical address mapping table; the WiFi module is a WiFi signal receiving device of the mobile medical care terminal and is used for connecting the mobile medical care terminal to a network; the WiFi ap component provides WiFi signals and is composed of WiFi ap devices distributed at various positions. The mobile medical care terminal also comprises one or two of a camera and a positioning chip.
According to the invention, by utilizing the known regional position information and network AP deployment information of the hospital ward, when a doctor and a nurse encounter the abnormal network transmission of the mobile medical care terminal, the doctor and the nurse do not wait blindly and passively, but actively trigger roaming switching, so that the medical care waiting time is reduced, and the method has the advantages that:
1. establishing an optimal AP connection list of each working position in advance by utilizing the known area position and AP deployment information of the hospital; when the roaming switching is actively triggered, the signal strength of each AP does not need to be compared, and the faster roaming switching is realized;
2. the optimal connection AP of each working place can be set in a balanced manner according to the distribution conditions of the APs and sickbeds in the sickrooms, so that network blockage of a single strong signal AP is avoided;
3. when a network fault occurs, the fault AP can be quickly positioned according to the working place of the partition number, so that the problem can be quickly checked conveniently.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A WiFi roaming method of a mobile medical care terminal is characterized by comprising the following steps:
s1, dividing regions and marking positions;
s2, collecting the signal strength RSSI of all APs in each area;
s3, establishing a mapping table of each area and the preferred AP;
s4, writing the mapping table into all the mobile medical care terminals;
and S5, discovering the abnormal network transmission and triggering roaming switching.
2. The WiFi roaming method of the mobile healthcare terminal of claim 1, wherein in step S1, the identifying the location is printing location identification information as a two-dimensional barcode label and pasting at the corresponding location.
3. The WiFi roaming method of the mobile healthcare terminal of claim 1, wherein the step S2 specifically includes the following steps:
s21, counting all APs of the target SSID in the area, and naming the identifier;
s22, establishing a mapping table of each AP and the unique physical address thereof;
s23, detecting and recording the signal strength of AP capable of detecting the specified SSID respectively for each zone position.
4. The WiFi roaming method of the mobile healthcare terminal of claim 1, wherein the step S3 specifically includes the following steps:
s31, arranging the APs which can be detected at each position according to the signal strength from strong to weak, and eliminating the APs with the signal strength lower than a threshold value;
s32, establishing a mapping table of each position and AP meeting the signal strength requirement, and setting the maximum number of the selectable connected APs in each place;
and S33, counting the number of the positions of the first preferred connection of each AP, and adjusting the sequence of the preferred APs to ensure that the number of the positions of each AP as the first preferred mapping is kept balanced.
5. The WiFi roaming method of the mobile healthcare terminal of claim 1, wherein the step S4 specifically includes the following steps:
s41, importing the mapping table of the position and the AP and the mapping table of the AP and the unique physical address into a system setting program;
s42, the system setting program sends the mapping table of the position and the AP and the mapping table of the AP and the unique physical address to the mobile medical care terminal program;
and S43, writing the mapping table information into a Flash memory by the mobile medical care terminal program.
6. The WiFi roaming method of the mobile healthcare terminal of claim 1, wherein the step S5 specifically includes the following steps:
s51, obtaining network transmission abnormal information through WiFi connection state or application program prompt;
s52, manually selecting or scanning the position bar code to automatically position the current position, and selecting to trigger the roaming switching operation;
s53, the mobile medical care terminal program inquires a position and AP mapping table according to the positioned current position information, finds out a first preferred AP, sends the inquired unique physical address of the AP as a parameter to the WiFi module, and starts the WiFi module to reconnect the AP with the designated physical address;
s54, if the first preferred AP still can not be accessed after being successfully connected, switching to a second or a third AP in sequence until the network transmission is normal; and if all the mapping APs of the position cannot access the network, informing the information center to troubleshoot the fault.
7. A WiFi roaming device of a mobile medical care terminal is characterized by comprising:
the system comprises a system setting program, a mobile medical care terminal and a WiFi ap component;
the mobile medical care terminal comprises a mobile medical care terminal program, a flash storage module and a WiFi module;
the system sets a program, and sends a position and AP mapping table, an AP and a unique physical address mapping table to a mobile medical care terminal program;
the mobile medical care terminal program writes the mapping table information into a Flash memory so that the mapping table information is permanently stored; the flash memory is used for storing a position and AP mapping table and an AP and unique physical address mapping table;
the WiFi module is a WiFi signal receiving device of the mobile medical care terminal and is used for connecting the mobile medical care terminal to a network; the WiFi ap component provides WiFi signals and is composed of WiFi ap devices distributed at various positions.
8. The WiFi nomadic device of mobile medical care terminal of claim 7, wherein the mobile medical care terminal further comprises one or both of a camera and a positioning chip.
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| CN113316209B (en) | 2023-06-16 |
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