CN110972262A - Energy-saving indoor uplink positioning method and system - Google Patents
Energy-saving indoor uplink positioning method and system Download PDFInfo
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- CN110972262A CN110972262A CN201911324456.2A CN201911324456A CN110972262A CN 110972262 A CN110972262 A CN 110972262A CN 201911324456 A CN201911324456 A CN 201911324456A CN 110972262 A CN110972262 A CN 110972262A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
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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 relates to an energy-saving indoor uplink positioning method and system, which comprises the following steps: s1, the Bluetooth terminal is positioned to transmit preset uplink positioning access Bluetooth broadcast in a determined period, and an indoor distributed antenna monitoring system is waited to inform the positioning Bluetooth terminal that the uplink positioning monitoring is performed; the uplink positioning access broadcast comprises the following data: positioning an access mark, a preset service mark, a sign service provider mark, a user attribution, user identification data, transmitting power and a broadcasting period; the invention has reasonable design, compact structure and convenient use.
Description
Technical Field
The invention relates to an energy-saving indoor uplink positioning method and system.
Background
The passive positioning method is that Bluetooth broadcast signals are sent out by Bluetooth equipment carried by people or objects, the Bluetooth broadcast signals are received by pre-deployed Bluetooth signal receiving equipment, and the distance between the Bluetooth equipment for transmitting the signals and the receiving equipment is estimated according to the intensity of received field, so that the position of the Bluetooth equipment for transmitting the signals is determined.
Due to the low cost of bluetooth, a large number of bluetooth devices are currently deployed in commercial environments, including some internet of things applications and sensor applications. These bluetooth equipments are all launching bluetooth broadcast signal, lead to bluetooth signal reception equipment to continuously receive bluetooth broadcast signal, not only power consumptive, can reduce the receipt of useful signal moreover, influence positioning accuracy, increase location delay.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an energy-saving indoor uplink positioning method and system. The invention ensures the reception of useful signals by dynamically adjusting the white list (white list) of the link layer and the receiving power threshold of the Bluetooth signal receiving equipment, shields the reception of ineffective Bluetooth broadcast signals as much as possible, improves the positioning performance and achieves the aim of saving energy.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
an energy-saving indoor uplink positioning method comprises the following steps:
s1, the Bluetooth terminal is positioned to transmit preset uplink positioning access Bluetooth broadcast in a determined period, and an indoor distributed antenna monitoring system is waited to inform the positioning Bluetooth terminal that the uplink positioning monitoring is performed; the uplink positioning access broadcast comprises the following data:
positioning an access mark, a preset service mark, a sign service provider mark, a user attribution, user identification data, transmitting power and a broadcasting period;
the positioning access mark and the preset service mark are used for distinguishing uplink positioning access broadcast and non-uplink positioning access broadcast;
s2, firstly, detecting the Bluetooth broadcast with the positioning access mark and the preset service mark by the Bluetooth beacon of the indoor distributed antenna monitoring system; then, the Bluetooth beacon distinguishes whether a user needing to receive the uplink positioning service exists or not by identifying the positioning access mark and a preset service mark; secondly, the Bluetooth broadcast is transmitted back to the network manager through the gateway;
s3, after receiving the up positioning access broadcast signal, the network manager compares the sign of the signing service provider, the user attribution information and the user identification data, and identifies whether the user belongs to the set legal signing user by adding the MAC address information in the up positioning access broadcast;
s4, when the user is a legal subscriber, the webmaster needs to provide the user with an uplink positioning service, and first, the webmaster allocates a temporary identifier to the user and notifies the corresponding bluetooth beacon to broadcast and respond to the positioning bluetooth terminal, where the broadcast response information includes the following data:
positioning notification mark + sign service provider mark + user attribution place + user identification data + temporary identification number;
secondly, the positioning Bluetooth terminal receives a Bluetooth broadcast response signal, after receiving a broadcast containing a self signed service provider mark, a user attribution and user identification data, the indoor distributed antenna monitoring system informs the positioning Bluetooth terminal that uplink positioning monitoring is performed, determines network management response information through the positioning notification mark, determines whether the response information needs to be processed by self through the user attribution and the user identification data, and if the user attribution and the user identification data are consistent with the self information, the Bluetooth terminal records a temporary identification number to be used as an identification number of subsequent uplink positioning broadcast; thirdly, the positioning Bluetooth terminal is changed into a preset uplink positioning broadcast, namely, the broadcast information is changed into the following data format:
positioning access mark + preset service mark + temporary identification number + transmission power + broadcast period,
the Bluetooth terminal sends uplink positioning broadcast by using the temporary identification number, and simultaneously, the positioning Bluetooth terminal shortens the period of the Bluetooth broadcast, namely the period of the uplink positioning broadcast is shorter than the period of the uplink positioning access Bluetooth broadcast;
s5, firstly, the Bluetooth beacon returns to the network management after receiving the positioning access mark, the network management receives the positioning Bluetooth terminal broadcast information forwarded by the Bluetooth beacon to know that the Bluetooth terminal has successfully received the response Bluetooth broadcast, completes the tracking and positioning of the positioning Bluetooth terminal, a part of Bluetooth beacons configured in the area of the set radius of the positioning Bluetooth terminal write the MAC address of the positioning Bluetooth terminal in the white list of the link layer, and configures the Bluetooth beacons into the white list scanning uplink positioning broadcast state to ensure the tracking and positioning performance of the positioning Bluetooth terminal, wherein the tracking and positioning performance comprises positioning accuracy and positioning delay; then, another part of Bluetooth beacons in the area are configured to increase the speed to scan the states of the uplink positioning access broadcast and the uplink positioning broadcast, and the uplink positioning access broadcast and the uplink positioning broadcast are subjected to increased speed scanning reception, so that the positioning service is provided for the positioning Bluetooth terminal allocated with the temporary identification number, and meanwhile, the Bluetooth access broadcast of the positioning Bluetooth terminal not allocated with the temporary identification number is received;
s6, the network manager sets a positioning field intensity threshold while configuring the white list scanning uplink positioning broadcast state for the Bluetooth beacon, and uploads the received broadcast signal to the network manager for positioning calculation, wherein only the MAC address is in the white list and the received broadcast signal with the received field intensity RSSI exceeding the positioning field intensity threshold.
As a further improvement of the above technical solution:
in step S1, the bluetooth terminal receives the response broadcast of the bluetooth beacon through time-sharing operation while transmitting the uplink positioning access broadcast signal; the Bluetooth beacon sends Bluetooth broadcast information containing a positioning access mark and a preset service mark to inform a Bluetooth terminal, and the Bluetooth terminal is in an uplink positioning service area;
in S2, when the bluetooth beacon does not detect a bluetooth terminal that needs uplink positioning in the working area, reducing the frequency of receiving uplink positioning, and broadcasting a signal including a positioning access flag and a preset service flag by the bluetooth beacon through time-sharing operation;
in step S3, when the white list scans the uplink positioning broadcast, the bluetooth beacon only reports the broadcast information whose receiving field strength exceeds the preset threshold;
when no positioning user exists in the service area of the indoor distributed antenna monitoring system, the Bluetooth beacon is in a low-speed scanning uplink positioning access broadcast state;
when a Bluetooth beacon of an indoor distributed antenna monitoring system receives an uplink positioning access broadcast signal, determining that the positioning Bluetooth terminal is a signed user by matching a preset service mark and a signed service provider mark, and preferentially transmitting the broadcast signal back to a network manager;
in step S3, the bluetooth terminal determines whether the uplink positioning service has been terminated by receiving the bluetooth broadcast information of the bluetooth beacon, which includes the positioning access flag and the preset service flag, and if the bluetooth broadcast information is not received or the response information of the bluetooth beacon is not received within the set time threshold, the bluetooth terminal retransmits the uplink positioning access broadcast and adjusts the broadcast period back to the uplink positioning access bluetooth broadcast period;
in step S4, the webmaster requests the bluetooth beacon to send a response bluetooth broadcast message to the bluetooth terminal at any time to notify the bluetooth terminal that the webmaster is receiving the uplink positioning service of the indoor distributed antenna monitoring system; after the bluetooth beacon broadcasts the response message for the specified times, the bluetooth beacon changes the uplink positioning access broadcast into the uplink positioning broadcast until the bluetooth terminal informs the bluetooth beacon to stop broadcasting the response message or automatically stop broadcasting the response message.
An energy-saving indoor uplink positioning system comprises a gateway, a network manager, a combiner, a feeder line, a Bluetooth beacon, a Bluetooth standard protocol and a coupler;
the positioning Bluetooth terminal comprises at least two states, and a Bluetooth uplink positioning access broadcast state and a Bluetooth uplink positioning broadcast state are sent, wherein the periods of the two broadcasts are different; the Bluetooth beacon is provided with a receiving field intensity threshold value;
the Bluetooth beacon is accessed to the feeder line through the coupler access point, and the Bluetooth signal is received by the Bluetooth gateway through the feeder line and the combiner, so that the information acquired by the Bluetooth beacon is transmitted back to the Bluetooth gateway and is uploaded to the network manager;
the network manager configures the Bluetooth beacon of the indoor distributed antenna monitoring system;
the indoor distributed antenna monitoring system comprises indoor distributed antennas, a Bluetooth beacon and a network manager, wherein the indoor distributed antennas are used for expanding the coverage range of Bluetooth signals, ensuring that the uploading broadcast signals of each positioning Bluetooth terminal in a positioning area can be received by the Bluetooth beacon and are transmitted back to the network manager through a feeder line and a combiner;
the Bluetooth beacon of the indoor distributed antenna monitoring system comprises at least three groups of scanning states, namely a set low-speed scanning uplink positioning access broadcast state, a set high-speed simultaneous scanning uplink positioning access broadcast and uplink positioning broadcast states and a white list-based scanning uplink positioning broadcast state;
in a standard protocol of Bluetooth, a link layer of a system is allowed to filter scanned Bluetooth broadcast signals through a white list mechanism, Bluetooth chip information for positioning a Bluetooth terminal is arranged in a white list, the Bluetooth chip is ensured to only receive the Bluetooth broadcast signals of Bluetooth equipment in the white list, and the Bluetooth chip information comprises an MAC address;
and for the positioning Bluetooth terminal in the Bluetooth uplink positioning broadcast state, the service receiving state is included and whether the service receiving state is determined, and the network manager confirms that the positioning Bluetooth terminal is currently receiving the uplink positioning service.
The positioning Bluetooth terminal is changed into a preset uplink positioning broadcast, and the periodic transmission is shortened so as to improve the positioning precision; the Bluetooth beacon of the indoor distributed antenna monitoring system comprises at least three groups of scanning states, so that the Bluetooth uplink positioning access broadcast and the Bluetooth uplink positioning broadcast are received in a targeted manner, signals useful for positioning can be transmitted as far as possible, the positioning precision is improved, and the positioning time delay is reduced; the Bluetooth beacon of the indoor distributed antenna monitoring system is intelligently configured through the network manager, so that energy conservation is realized, the efficiency of receiving uplink positioning broadcast is improved, and the positioning precision is improved. The positioning Bluetooth terminal comprises at least two states, namely a Bluetooth uplink positioning access broadcast state and a Bluetooth uplink positioning broadcast state, wherein the periods of the two broadcasts are different so as to save electricity; the Bluetooth beacon is provided with a receiving field intensity threshold value so as to further reduce the transmission of useless signals and improve the positioning capacity.
The invention has the advantages of reasonable design, low cost, firmness, durability, safety, reliability, simple operation, time and labor saving, capital saving, compact structure and convenient use. The invention realizes energy saving by intelligent configuration of the Bluetooth beacon of the indoor distributed antenna monitoring system, and improves the efficiency of receiving the uplink positioning broadcast so as to improve the positioning precision.
Drawings
Fig. 1 is a schematic diagram of the framework of the present invention.
Fig. 2 is a schematic layout of the present invention.
Fig. 3 is a flowchart of the operation of the bluetooth terminal of the present invention.
Fig. 4 is a bluetooth beacon process flow diagram of the present invention.
Detailed Description
As shown in fig. 1 to 4, in the first embodiment: referring to a system schematic diagram of an indoor distributed antenna monitoring system, the system comprises a gateway, a network manager, a combiner, a feeder line, a Bluetooth beacon and a coupler;
the Bluetooth beacon is accessed to the feeder line through the coupler access point, and the Bluetooth signal is received by the Bluetooth gateway through the feeder line and the combiner, so that the information acquired by the Bluetooth beacon is transmitted back to the Bluetooth gateway and is uploaded to the network manager;
the system also comprises an indoor distributed antenna which is used for expanding the coverage range of the Bluetooth signals, ensuring that the uploading broadcast signals of each positioning Bluetooth terminal in the positioning area can be received by the Bluetooth beacon and are transmitted back to the network manager through the feeder line and the combiner;
referring to the device connection communication schematic diagram of the first indoor uplink positioning embodiment, the positioning bluetooth terminal and the non-positioning bluetooth terminal transmit bluetooth broadcast signals, and the signals are received by the bluetooth beacon. Because the processing capacity of the bluetooth beacon is limited, the total number of bluetooth broadcasts that can be received by the bluetooth beacon per second is limited, and the more the bluetooth beacon receives broadcast signals of non-positioning bluetooth terminals, the less the number of broadcast signals of positioning bluetooth terminals that can be received in unit time. Because the bluetooth signal is affected by the wireless fading channel when it is transmitted in the air, which causes the random variation of the signal receiving field intensity, more positioning broadcast signals need to be received to improve the positioning accuracy and positioning timeliness. Therefore, the bluetooth broadcast signal of the non-positioning bluetooth terminal can affect the positioning accuracy and the positioning timeliness of the positioning terminal, and the bluetooth beacon is required to be prevented from receiving the bluetooth signal of the non-positioning bluetooth terminal as far as possible.
The Bluetooth standard protocol is set to allow the scanned Bluetooth broadcast signals to be filtered through a white list (white list) mechanism in a link layer, and the Bluetooth chip is ensured to only receive the Bluetooth broadcast signals of the Bluetooth equipment in the white list by setting Bluetooth chip information such as MAC addresses in the white list. However, because the bluetooth chip has limited memory resources, the bluetooth chip information in the white list cannot be set much, which results in a large number of positioning bluetooth terminals of registered service users, and bluetooth broadcast signals transmitted by the positioning bluetooth terminals are not received by the bluetooth beacon, so that the users cannot complete the uplink positioning service.
In order to enable the network manager to know which users are currently receiving the uplink positioning service, the positioning Bluetooth terminal distinguishes two states of receiving the service and does not determine whether the service is received or not. The positioning Bluetooth terminal firstly transmits uplink positioning access broadcast, and comprises the following data:
positioning access mark 0A + preset service mark (2Bytes) + sign of signed service provider (6Bytes) + user attribution (6Bytes) +6Bytes user identification data + transmission power (1Byte) + broadcast period (2Bytes, unit millisecond)
When no positioning user exists in the service area of the indoor distributed antenna monitoring system, the Bluetooth beacon is in a low-speed scanning uplink positioning access broadcast state so as to save electricity;
when a Bluetooth beacon of an indoor distributed antenna monitoring system receives the uplink positioning access broadcast signal, determining that the positioning Bluetooth terminal is a signed user by matching a preset service mark and a signed service provider mark, and preferentially transmitting the broadcast signal back to a network manager;
after receiving the uplink positioning access broadcast signal, the network manager compares the sign of the signed service provider, the user attribution information and the user identification data, and can identify that the user belongs to a legal signed user by adding the MAC address information in the uplink positioning access broadcast;
the webmaster then allocates a 4Bytes temporary identification number (temporary identification) to the user, and notifies the positioning bluetooth terminal through bluetooth beacon broadcast, wherein the broadcast includes the following data:
the method comprises the following steps that a positioning notification mark 1A + a sign service provider mark (6Bytes) + a user attribution place (6Bytes) +6Bytes user identification data + a 4Bytes temporary identification number;
the positioning Bluetooth terminal receives a Bluetooth broadcast signal, and changes the broadcast information into the following data format after receiving the broadcast containing the sign of the self-signed service provider, the user attribution and the user identification data:
positioning an access mark 0A + a preset service mark (2Bytes) + a 4Bytes temporary identification number + transmission power (1Byte) + a broadcast period (2Bytes, unit of millisecond);
meanwhile, in order to improve the positioning precision and reduce the positioning time delay, the positioning Bluetooth terminal can shorten the period of Bluetooth broadcasting.
The network manager receives the broadcast information of the positioning Bluetooth terminal forwarded by the Bluetooth beacon, completes the tracking and positioning of the positioning Bluetooth terminal, writes most Bluetooth beacons configured in the 100-meter radius area of the positioning Bluetooth terminal into the MAC address of the positioning Bluetooth terminal in a link layer white list, and configures the Bluetooth beacons into a white list scanning uplink positioning broadcast state so as to ensure the tracking and positioning performance of the positioning Bluetooth terminal, including positioning accuracy and positioning delay. A small number of Bluetooth beacons in the area are configured to be in high-speed scanning uplink positioning access broadcast and uplink positioning broadcast states, and high-speed scanning reception is carried out on the uplink positioning access broadcast and the uplink positioning broadcast, so that the Bluetooth access broadcast of the positioning Bluetooth terminal which is not allocated with the temporary identification number can be received while the quick positioning service is provided for the positioning Bluetooth terminal which is allocated with the temporary identification number.
Example two: in the first embodiment, the network manager may set the positioning field intensity threshold while configuring the bluetooth beacon as a white list scanning uplink positioning broadcast state, and only if the MAC address is in the white list and the received broadcast signal whose received field intensity RSSI exceeds the positioning field intensity threshold is uploaded to the network manager for positioning calculation. Because the bluetooth chip has the requirement of receiving sensitivity, the field intensity calculation of the broadcast signal lower than the receiving sensitivity is generally larger in error, and the number of interference signals transmitted by the bluetooth signal is more, and when the receiving field intensity is lower than a threshold value, the signal does not greatly help positioning. Through filtering the measuring signal, help saving transmission bandwidth, and under the more circumstances in location bluetooth terminal, can realize as much as possible location service.
Example three: referring to the working flow chart of the bluetooth terminal in the third indoor uplink positioning embodiment, when the bluetooth terminal starts uplink positioning, the bluetooth terminal firstly sends an uplink positioning access broadcast in a format:
positioning an access mark 0A + a preset service mark (2Bytes) + a sign of a signed service provider (6Bytes) + a user attribution (6Bytes) +6Bytes user identification data + transmission power (1Byte) + a broadcast period (2Bytes, unit of millisecond);
in this broadcast, the first two fields: the positioning access mark 0A and the preset service marks (2Bytes) are used for distinguishing the common Bluetooth broadcast and the uplink positioning access broadcast of the method. The Bluetooth beacon of the indoor distributed antenna monitoring system distinguishes whether a user needing to receive the uplink positioning service exists or not by identifying the two fields. When the bluetooth beacon detects the bluetooth broadcast with the two fields, the bluetooth broadcast needs to be transmitted back to the network manager through the gateway, and the network manager judges whether the bluetooth terminal broadcasting the signal is a legal user.
After receiving the bluetooth broadcast returned by the bluetooth beacon, the network manager identifies whether the bluetooth terminal is a legal subscriber or not, or whether uplink positioning service needs to be provided for the user or not, through the sign of the subscription service provider, the user attribution and the user identification. If yes, the webmaster needs to perform uplink positioning according to data such as the transmission power, the broadcast period and the like of the bluetooth terminal, and determine the specific position of the bluetooth terminal.
The above process may take a long time, and because the delay of the bluetooth beacon receiving the uplink positioning access broadcast of the bluetooth terminal is uncertain, and in addition, the bluetooth terminal cannot determine how the bluetooth beacon receives the signal condition of the bluetooth terminal, and whether the bluetooth terminal can correctly decode to obtain the bluetooth broadcast information, when the uplink positioning access broadcast signal is sent, the bluetooth terminal may select a longer period, such as 1 second, so as to achieve the purpose of saving power.
The bluetooth terminal also needs to receive the response broadcast of the bluetooth beacon through time-sharing operation while sending the uplink positioning access broadcast signal. The bluetooth beacon may transmit bluetooth broadcast information including a location access flag 0B and a preset service flag (2Bytes) to inform the bluetooth terminal that it is in an uplink location service area. The network management determines that the Bluetooth terminal is a legal user, and after finishing the uplink positioning of the Bluetooth terminal, informs one or more Bluetooth beacons near the Bluetooth terminal, and broadcasts response information:
the method comprises the following steps that a positioning notification mark 1A + a sign service provider mark (6Bytes) + a user attribution place (6Bytes) +6Bytes user identification data + a 4Bytes temporary identification number;
after receiving the response Bluetooth broadcast, the Bluetooth terminal determines that the response information is network management response information through the mark 1A, and determines whether the response information needs to be processed by the Bluetooth terminal through the user attribution and the user identification data. If the user attribution and the user identification data are consistent with the information of the user attribution and the user identification data, the Bluetooth terminal needs to record a 4Bytes temporary identification number so as to serve as an identification number of subsequent uplink positioning broadcast.
The Bluetooth terminal sends uplink positioning broadcast by using the temporary identification number:
positioning an access mark 0C + a preset service mark (2Bytes) + a 4Bytes temporary identification number + transmission power (1Byte) + a broadcast period (2Bytes, unit of millisecond);
different from the uplink positioning access broadcast, the flag of the uplink positioning broadcast is 0C, after receiving the flag, the bluetooth beacon returns the flag to the network manager, and the network manager knows that the bluetooth terminal has successfully received the response bluetooth broadcast. After that, the network manager tracks the Bluetooth terminal according to the temporary identification number to simplify the processing.
In order to ensure the uplink positioning performance, the bluetooth terminal can shorten the period of uplink positioning broadcast, and the shortest period can be set to 100ms, so as to ensure that the bluetooth beacon can receive enough uplink positioning broadcast signals.
The bluetooth terminal may determine whether to go within the uplink positioning service area by receiving bluetooth broadcast information of the bluetooth beacon, which includes the positioning access flag 0B and the preset service flag (2 Bytes). If the broadcast information can not be received or the response information of the Bluetooth beacon is not received for a long time, the uplink positioning service is judged to be terminated, the Bluetooth terminal retransmits the uplink positioning access broadcast, and the broadcast period is adjusted back to 1 second.
Example four: referring to the bluetooth beacon operation flow chart of the fourth indoor uplink positioning embodiment, when the bluetooth beacon does not detect a bluetooth terminal that needs uplink positioning in the working area, the frequency of receiving uplink positioning may be reduced, for example, the scanning interval is set to about 10 seconds, and the scanning window width is about 1 second, so as to ensure that the bluetooth beacon can be in the low-power-consumption sleep state in 90% of the time. In addition, by time sharing, the bluetooth beacon may broadcast a signal containing a location access flag 0B and a preset service flag (2 Bytes).
When the bluetooth beacon scans an uplink positioning access broadcast signal containing a positioning access mark 0A and a preset service mark (2Bytes), the signal is transmitted back to the network manager. Meanwhile, the bluetooth beacon increases the scanning window to about 9 seconds, even 10 seconds, or reduces the scanning interval to about 1 second, and the scanning window width approaches to 1 second, so as to ensure that as much uplink positioning broadcast information as possible can be transmitted back in time.
After the network manager identifies the legal user, the network manager informs the Bluetooth beacon to send response broadcast information to the Bluetooth terminal, wherein the response information comprises:
the method comprises the following steps that a positioning notification mark 1A + a sign service provider mark (6Bytes) + a user attribution place (6Bytes) +6Bytes user identification data + a 4Bytes temporary identification number;
the network manager can request the Bluetooth beacon to send the response information to the Bluetooth terminal at any time so as to inform the Bluetooth terminal that the Bluetooth terminal is receiving the uplink positioning service of the indoor distributed antenna monitoring system. The bluetooth beacon broadcasts the response message until the bluetooth terminal changes the uplink positioning access broadcast into the uplink positioning broadcast, and the network manager informs the bluetooth beacon to stop broadcasting the response message; or the Bluetooth beacon automatically stops broadcasting the response message after broadcasting the response message for the specified times.
In order to ensure that the uplink positioning broadcast signals can be transmitted back to the network manager as soon as possible, the network manager can select part of the bluetooth beacons and set the white list, so that the bluetooth beacons only receive the uplink positioning broadcast information of the bluetooth terminals in the white list. This can ensure that the broadcast information received by the bluetooth beacon is effective positioning information, thereby avoiding the interference of the non-uplink positioning bluetooth information to the positioning efficiency.
The present invention has been fully described for a clear disclosure and is not to be considered as an exemplification of the prior art.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; it is obvious as a person skilled in the art to combine several aspects of the invention. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. An energy-saving indoor uplink positioning method is characterized in that: the method comprises the following steps:
s1, the Bluetooth terminal is positioned to transmit preset uplink positioning access Bluetooth broadcast in a determined period, and an indoor distributed antenna monitoring system is waited to inform the positioning Bluetooth terminal that the uplink positioning monitoring is performed; the uplink positioning access broadcast comprises the following data:
positioning an access mark, a preset service mark, a sign service provider mark, a user attribution, user identification data, transmitting power and a broadcasting period;
the positioning access mark and the preset service mark are used for distinguishing uplink positioning access broadcast and non-uplink positioning access broadcast;
s2, firstly, detecting the Bluetooth broadcast with the positioning access mark and the preset service mark by the Bluetooth beacon of the indoor distributed antenna monitoring system; then, the Bluetooth beacon distinguishes whether a user needing to receive the uplink positioning service exists or not by identifying the positioning access mark and a preset service mark; secondly, the Bluetooth broadcast is transmitted back to the network manager through the gateway;
s3, after receiving the up positioning access broadcast signal, the network manager compares the sign of the signing service provider, the user attribution information and the user identification data, and identifies whether the user belongs to the set legal signing user by adding the MAC address information in the up positioning access broadcast;
s4, when the user is a legal subscriber, the webmaster needs to provide the user with an uplink positioning service, and first, the webmaster allocates a temporary identifier to the user and notifies the corresponding bluetooth beacon to broadcast and respond to the positioning bluetooth terminal, where the broadcast response information includes the following data:
positioning notification mark + sign service provider mark + user attribution place + user identification data + temporary identification number;
secondly, the positioning Bluetooth terminal receives a Bluetooth broadcast response signal, after receiving a broadcast containing a self signed service provider mark, a user attribution and user identification data, the indoor distributed antenna monitoring system informs the positioning Bluetooth terminal that uplink positioning monitoring is performed, determines network management response information through the positioning notification mark, determines whether the response information needs to be processed by self through the user attribution and the user identification data, and if the user attribution and the user identification data are consistent with the self information, the Bluetooth terminal records a temporary identification number to be used as an identification number of subsequent uplink positioning broadcast; thirdly, the positioning Bluetooth terminal is changed into a preset uplink positioning broadcast, namely, the broadcast information is changed into the following data format:
positioning access mark + preset service mark + temporary identification number + transmission power + broadcast period,
the Bluetooth terminal sends uplink positioning broadcast by using the temporary identification number, and simultaneously, the positioning Bluetooth terminal shortens the period of the Bluetooth broadcast, namely the period of the uplink positioning broadcast is shorter than the period of the uplink positioning access Bluetooth broadcast;
s5, firstly, the Bluetooth beacon returns to the network management after receiving the positioning access mark, the network management receives the positioning Bluetooth terminal broadcast information forwarded by the Bluetooth beacon to know that the Bluetooth terminal has successfully received the response Bluetooth broadcast, completes the tracking and positioning of the positioning Bluetooth terminal, a part of Bluetooth beacons configured in the area of the set radius of the positioning Bluetooth terminal write the MAC address of the positioning Bluetooth terminal in the white list of the link layer, and configures the Bluetooth beacons into the white list scanning uplink positioning broadcast state to ensure the tracking and positioning performance of the positioning Bluetooth terminal, wherein the tracking and positioning performance comprises positioning accuracy and positioning delay; then, another part of Bluetooth beacons in the area are configured to increase the speed to scan the states of the uplink positioning access broadcast and the uplink positioning broadcast, and the uplink positioning access broadcast and the uplink positioning broadcast are subjected to increased speed scanning reception, so that the positioning service is provided for the positioning Bluetooth terminal allocated with the temporary identification number, and meanwhile, the Bluetooth access broadcast of the positioning Bluetooth terminal not allocated with the temporary identification number is received;
s6, the network manager sets a positioning field intensity threshold while configuring the white list scanning uplink positioning broadcast state for the Bluetooth beacon, and uploads the received broadcast signal to the network manager for positioning calculation, wherein only the MAC address is in the white list and the received broadcast signal with the received field intensity RSSI exceeding the positioning field intensity threshold.
2. The method of energy efficient indoor uplink positioning of claim 1, wherein:
in step S1, the bluetooth terminal receives the response broadcast of the bluetooth beacon through time-sharing operation while transmitting the uplink positioning access broadcast signal; the Bluetooth beacon sends Bluetooth broadcast information containing a positioning access mark and a preset service mark to inform a Bluetooth terminal, and the Bluetooth terminal is in an uplink positioning service area;
in S2, when the bluetooth beacon does not detect a bluetooth terminal that needs uplink positioning in the working area, reducing the frequency of receiving uplink positioning, and broadcasting a signal including a positioning access flag and a preset service flag by the bluetooth beacon through time-sharing operation;
in step S3, when the white list scans the uplink positioning broadcast, the bluetooth beacon only reports the broadcast information whose receiving field strength exceeds the preset threshold;
when no positioning user exists in the service area of the indoor distributed antenna monitoring system, the Bluetooth beacon is in a low-speed scanning uplink positioning access broadcast state;
when a Bluetooth beacon of an indoor distributed antenna monitoring system receives an uplink positioning access broadcast signal, determining that the positioning Bluetooth terminal is a signed user by matching a preset service mark and a signed service provider mark, and preferentially transmitting the broadcast signal back to a network manager;
in step S3, the bluetooth terminal determines whether the uplink positioning service has been terminated by receiving the bluetooth broadcast information of the bluetooth beacon, which includes the positioning access flag and the preset service flag, and if the bluetooth broadcast information is not received or the response information of the bluetooth beacon is not received within the set time threshold, the bluetooth terminal retransmits the uplink positioning access broadcast and adjusts the broadcast period back to the uplink positioning access bluetooth broadcast period;
in step S4, the webmaster requests the bluetooth beacon to send a response bluetooth broadcast message to the bluetooth terminal at any time to notify the bluetooth terminal that the webmaster is receiving the uplink positioning service of the indoor distributed antenna monitoring system; after the bluetooth beacon broadcasts the response message for the specified times, the bluetooth beacon changes the uplink positioning access broadcast into the uplink positioning broadcast until the bluetooth terminal informs the bluetooth beacon to stop broadcasting the response message or automatically stop broadcasting the response message.
3. An energy-saving indoor uplink positioning system is characterized by comprising a gateway, a network manager, a combiner, a feeder line, a Bluetooth beacon, a Bluetooth standard protocol and a coupler;
the positioning Bluetooth terminal comprises at least two states, and a Bluetooth uplink positioning access broadcast state and a Bluetooth uplink positioning broadcast state are sent, wherein the periods of the two broadcasts are different; the Bluetooth beacon is provided with a receiving field intensity threshold value;
the Bluetooth beacon is accessed to the feeder line through the coupler access point, and the Bluetooth signal is received by the Bluetooth gateway through the feeder line and the combiner, so that the information acquired by the Bluetooth beacon is transmitted back to the Bluetooth gateway and is uploaded to the network manager;
the network manager configures the Bluetooth beacon of the indoor distributed antenna monitoring system;
the indoor distributed antenna monitoring system comprises indoor distributed antennas, a Bluetooth beacon and a network manager, wherein the indoor distributed antennas are used for expanding the coverage range of Bluetooth signals, ensuring that the uploading broadcast signals of each positioning Bluetooth terminal in a positioning area can be received by the Bluetooth beacon and are transmitted back to the network manager through a feeder line and a combiner;
the Bluetooth beacon of the indoor distributed antenna monitoring system comprises at least three groups of scanning states, namely a set low-speed scanning uplink positioning access broadcast state, a set high-speed simultaneous scanning uplink positioning access broadcast and uplink positioning broadcast states and a white list-based scanning uplink positioning broadcast state;
in a standard protocol of Bluetooth, a link layer of a system is allowed to filter scanned Bluetooth broadcast signals through a white list mechanism, Bluetooth chip information for positioning a Bluetooth terminal is arranged in a white list, the Bluetooth chip is ensured to only receive the Bluetooth broadcast signals of Bluetooth equipment in the white list, and the Bluetooth chip information comprises an MAC address;
and for the positioning Bluetooth terminal in the Bluetooth uplink positioning broadcast state, the service receiving state is included and whether the service receiving state is determined, and the network manager confirms that the positioning Bluetooth terminal is currently receiving the uplink positioning service.
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