CN107517498B - Information processing method and system - Google Patents

Information processing method and system Download PDF

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CN107517498B
CN107517498B CN201610423895.9A CN201610423895A CN107517498B CN 107517498 B CN107517498 B CN 107517498B CN 201610423895 A CN201610423895 A CN 201610423895A CN 107517498 B CN107517498 B CN 107517498B
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measurement
positioning
equipment
determining
current position
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CN107517498A (en
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叶小仁
陈诗军
唐雄
向平叶
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ZTE Corp
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

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Abstract

The invention discloses an information processing method, which comprises the following steps: measuring the receiving power of the measuring signal according to the measuring signal transmitted by the equipment to be positioned, and determining the transmitting power of the measuring signal; constructing channel path loss according to the ratio of the receiving power to the transmitting power, and using the channel path loss as the current position positioning characteristic of the equipment to be positioned; and determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned. The invention also discloses an information processing system.

Description

Information processing method and system
Technical Field
The invention relates to a fingerprint positioning technology in the field of mobile communication, in particular to an information processing method and system.
Background
In the outdoor world, Satellite Positioning networks represented by the Global Positioning System (GPS) and the BeiDou Navigation Satellite System (BDS) are now mature in scale. However, in the indoor environment, satellite positioning cannot be used in most cases because the satellite signal is weak. As the demand for indoor mobile positioning increases, indoor mobile positioning will become the next generation mobile network service growth point.
In order to realize indoor mobile positioning, fingerprint positioning based on wifi signal strength is typical at present. And the fingerprint positioning based on the wifi signal intensity not only needs to deploy a special wifi network in a positioning area, but also causes larger fingerprint positioning error due to different transmitting power of each device to be positioned.
Disclosure of Invention
In order to solve the existing technical problem, embodiments of the present invention are expected to provide an information processing method and system, which can realize accurate positioning based on fingerprints.
The technical scheme of the embodiment of the invention is realized as follows:
according to an aspect of the present invention, there is provided an information processing method, including:
measuring the receiving power of the measuring signal according to the measuring signal transmitted by the equipment to be positioned, and determining the transmitting power of the measuring signal;
constructing channel path loss according to the ratio of the receiving power to the transmitting power, and using the channel path loss as the current position positioning characteristic of the equipment to be positioned;
and determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned.
In the above scheme, the method further comprises:
after receiving a positioning request of a device to be positioned, configuring a measurement signal resource for the device to be positioned;
the configuring measurement signal resources for the device to be positioned includes:
determining the position information of a plurality of positioning measurement units in a measurement base station;
determining the minimum transmitting power of the equipment to be positioned for transmitting the measuring signal, which can cover the plurality of positioning measuring units, according to the position information of the plurality of positioning measuring units;
and configuring measurement signal resources for the equipment to be positioned according to the minimum transmitting power so that the plurality of positioning measurement units can receive the measurement signals.
In the foregoing scheme, the determining the transmission power of the measurement signal includes:
and determining the measurement signal resource configured for the equipment to be positioned as the transmission power of the measurement signal transmitted by the equipment to be positioned.
In the foregoing scheme, the determining the transmission power of the measurement signal further includes:
and receiving the transmitting power of the measuring signal reported by the equipment to be positioned.
In the foregoing solution, the determining the current position of the device to be positioned includes:
matching the current position locating feature of the equipment to be located with the position locating feature in a position database;
and determining the current position of the equipment to be positioned according to the matching result.
In the foregoing solution, the determining the current position of the device to be positioned further includes:
obtaining a plurality of matching positions where the current position locating feature of the equipment to be positioned is closest to the position locating features in the position database;
and after carrying out weighted average on the acquired position characteristics of the plurality of matched positions, determining the current position of the equipment to be positioned.
According to another aspect of the present invention, there is provided an information processing method, the method including:
determining the receiving power of a plurality of positioning measurement units transmitting measurement signals in a base station to be positioned and receiving the measurement signals, and the transmitting power of the plurality of positioning measurement units transmitting the measurement signals;
constructing channel path loss according to the ratio of the receiving power to the transmitting power, and using the channel path loss as the current position positioning characteristic of the equipment to be positioned;
and determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned.
In the above scheme, the method further comprises:
after receiving a positioning request of a device to be positioned, configuring measurement signal resources for a plurality of positioning measurement units in the measurement base station;
the configuring measurement signal resources for a plurality of positioning measurement units in the measurement base station includes:
determining location information for the plurality of positioning measurement units;
determining the minimum transmitting power which can cover the equipment to be positioned and is used for transmitting the measuring signals by the plurality of positioning measuring units according to the position information of the plurality of positioning measuring units;
and configuring measurement signal resources for the plurality of positioning measurement units according to the minimum transmitting power so that the equipment to be positioned can receive the measurement signals.
In the foregoing solution, the determining the receiving power of the measurement signal transmitted by the multiple positioning measurement units in the measurement base station and the transmitting power of the measurement signal transmitted by the multiple positioning measurement units by the device to be positioned includes:
and receiving the receiving power of the measurement signal reported by the equipment to be positioned and the transmitting power of the measurement signal reported by the plurality of positioning measurement units.
In the foregoing solution, the determining the current position of the device to be positioned includes:
matching the current position locating feature of the equipment to be located with the position locating feature in a position database;
and determining the current position of the equipment to be positioned according to the matching result.
In the foregoing solution, the determining the current position of the device to be positioned further includes:
obtaining a plurality of matching positions where the current position locating feature of the equipment to be positioned is closest to the position locating features in the position database;
and after carrying out weighted average on the acquired position characteristics of the plurality of matched positions, determining the current position of the equipment to be positioned.
According to still another aspect of the present invention, there is provided an information processing system, the system including: a measurement base station and a positioning server; wherein the content of the first and second substances,
the measuring base station is used for measuring the receiving power of the measuring signal according to the measuring signal transmitted by the equipment to be positioned and determining the transmitting power of the measuring signal;
the positioning server is used for constructing channel path loss according to the ratio of the receiving power to the transmitting power, and the channel path loss is used as the current position positioning characteristic of the equipment to be positioned; and determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned.
In the above scheme, the measurement base station is further configured to configure a measurement signal resource for the device to be positioned after receiving a positioning request of the device to be positioned;
the configuring measurement signal resources for the device to be positioned includes:
the measuring base station determines the position information of a plurality of positioning measuring units in the measuring base station; determining the minimum transmitting power of the equipment to be positioned for transmitting the measuring signal, which can cover the plurality of positioning measuring units, according to the position information of the plurality of positioning measuring units; and configuring measurement signal resources for the equipment to be positioned according to the minimum transmitting power so that the plurality of positioning measurement units can receive the measurement signals.
In the above scheme, the measurement base station is further configured to determine, as the transmission power of the measurement signal transmitted by the device to be positioned, the measurement signal resource configured for the device to be positioned.
In the above scheme, the measurement base station is further configured to receive the transmission power of the measurement signal reported by the device to be positioned.
In the above scheme, the positioning server is further configured to match the current position location feature of the device to be positioned with a position location feature in a position database, and determine the current position of the device to be positioned according to the matching result.
In the above scheme, the location server is further configured to obtain a plurality of matching locations where the current location feature of the device to be located is closest to the location feature in the location database; and after carrying out weighted average on the acquired position characteristics of the plurality of matched positions, determining the current position of the equipment to be positioned.
According to still another aspect of the present invention, there is provided an information processing system, the system including: a measurement base station and a positioning server; wherein the content of the first and second substances,
the measurement base station is used for determining the receiving power of the measurement signals transmitted by a plurality of positioning measurement units in the measurement base station and the transmitting power of the measurement signals transmitted by the plurality of positioning measurement units;
the positioning server is used for constructing channel path loss according to the ratio of the receiving power and the transmitting power, and the channel path loss is used as the current position positioning characteristic of the equipment to be positioned; and determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned.
In the above scheme, the measurement base station is further configured to configure measurement information resources for a plurality of positioning measurement units in the measurement base station after receiving a positioning request of the device to be positioned;
the configuring measurement signal resources for a plurality of positioning measurement units in the measurement base station includes:
the measurement base station determines the position information of the plurality of positioning measurement units; determining the minimum transmitting power which can cover the equipment to be positioned and is used for transmitting the measuring signals by the plurality of positioning measuring units according to the position information of the plurality of positioning measuring units; and configuring measurement signal resources for the plurality of positioning measurement units according to the minimum transmitting power so that the equipment to be positioned can receive the measurement signals.
In the above scheme, the measurement base station is further configured to receive the received power of the measurement signal reported by the device to be positioned and the transmission power of the measurement signal reported by the multiple positioning measurement units.
In the above scheme, the positioning server is further configured to match the current position location feature of the device to be positioned with a position location feature in a position database, and determine the current position of the device to be positioned according to the matching result.
In the above scheme, the location server is further configured to obtain a plurality of matching locations where the current location feature of the device to be located is closest to the location feature in the location database; and after carrying out weighted average on the acquired position characteristics of the plurality of matched positions, determining the current position of the equipment to be positioned.
The embodiment of the invention provides an information processing method and system, which comprises the steps of measuring the receiving power of a received measuring signal according to the measuring signal transmitted by equipment to be positioned, and determining the transmitting power of the measuring signal; constructing channel path loss according to the ratio of the receiving power to the transmitting power, and using the channel path loss as the current position positioning characteristic of the equipment to be positioned; and determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned. Therefore, the deployment cost of the wifi network is saved, and the current position of the equipment to be positioned can be accurately positioned under the condition that the transmitting power of the equipment to be positioned is different.
Drawings
Fig. 1 is a schematic flowchart of an uplink information processing method according to an embodiment of the present invention;
FIG. 2 is a diagram of a network architecture for information processing according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating information processing according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a downlink information processing method according to an embodiment of the present invention;
FIG. 5 is a block diagram of an embodiment of an uplink information processing system;
fig. 6 is a schematic diagram of a composition structure of a downlink information processing system according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention is suitable for processing the uplink information of the mobile network and is also suitable for processing the downlink information of the mobile network. The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a schematic flowchart of an uplink information processing method according to an embodiment of the present invention; as shown in fig. 1, the method includes:
step 101, measuring the receiving power of a received measuring signal according to the measuring signal transmitted by a device to be positioned, and determining the transmitting power of the measuring signal;
here, the measurement base station includes: the system comprises a Location Measurement Unit (LMU) and a Base station (ENB, E-UTRAN Node B), wherein the ENB comprises a Base Band Unit (BBU) and a Remote Radio Unit (RRU). The LMU can be set up independently or combined with the ENB, and when the LMU is set up independently, only the transmitting power or the receiving power of the measurement signal can be measured; when the LMU and the ENB are combined, the LMU is a logic device and is used for sharing resources such as BBU, RRU, antenna and the like of the ENB, and the measuring base station can measure the transmitting power or the receiving power of a measuring signal and can also enable a plurality of devices to be positioned to carry out service communication. Here, the ENB and the LMU are set up in a merged manner as an example. After receiving a positioning request of equipment to be positioned, a measurement base station firstly determines an ENB in an area where the equipment to be positioned is located according to the positioning request of the equipment to be positioned, and then determines position information of a plurality of LMUs in the measurement base station; determining the minimum transmitting power which can cover the LMUs and is used for transmitting the measuring signal by the equipment to be positioned according to the position information of the LMUs; and the measurement base station configures measurement signal resources for the equipment to be positioned according to the minimum transmitting power so that the plurality of LMUs can receive the measurement signals. The device to be located may be a User Equipment (UE), and the measurement Signal may be a channel Sounding Reference Signal (SRS).
After receiving a measurement signal resource configured by a measurement base station, a device to be positioned transmits a measurement signal according to a relevant parameter of a third Generation Partnership Project (3 GPP), and an LMU measures the reception power of the measurement signal transmitted by the device to be positioned according to the measurement signal transmitted by the device to be positioned and determines the transmission power of the measurement signal transmitted by the device to be positioned.
In the embodiment of the present invention, the measurement base station may determine, as the transmission power of the measurement information transmitted by the device to be positioned, the measurement signal resource configured for the device to be positioned; the device to be positioned may report the transmission power of the measurement signal to the measurement base station by itself.
After the measurement base station acquires the transmitting power and the receiving power of the measurement signal, the measurement base station may report only the receiving power and the transmitting power to a positioning server (E-SMLC), or may report the ratio of the receiving power to the transmitting power to the E-SMLC.
102, constructing channel path loss according to the ratio of the receiving power to the transmitting power, and using the channel path loss as a current position positioning matching feature of the equipment to be positioned; a position locating feature.
Here, after receiving the ratio of the received power and the transmitted power or the ratio of the received power and the transmitted power, the E-SMLC constructs a channel path loss according to the ratio of the received power and the transmitted power or the ratio of the received power and the transmitted power, and uses the constructed channel path loss as the current position location feature of the device to be located.
Step 103, determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned.
Here, the ratio of the transmission power of the measurement signal transmitted by the device to be positioned to the reception power of the measurement signal transmitted by the device to be positioned received by the LMU is stable, that is, the loss ratio of the transmission path between the device to be positioned and the LMU is stable, that is, the signal transmission loss is related to the positions of the transmission power and the reception power. Therefore, the E-SMLC can accurately position the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned.
In the embodiment of the present invention, when the watt "W" is taken as the power unit, the formula can be defined as:
Figure BDA0001017664150000071
where ρ is the transmission path loss ratio between the device to be positioned and the LMU, prMeasuring the received power, p, of a measurement signal emitted by a device to be positioned for an LMUtTransmission of measurement signals for a device to be positionedPower and p is less than or equal to 1, pt≥pr。
Or in decibels "dB" as a unit of power, the formula is defined as: p ═ pr′-pt′(dB)；
Wherein (dB) represents the ratio of the received power to the transmitted power, p is the transmission path loss ratio between the equipment to be positioned and the LMU, and pr' measuring the received power, p, of the measurement signal emitted by the device to be positioned for the LMUt' Transmission Power for transmitting measurement signals for the device to be positioned, and p > 0, pt′≥pr′。
In the embodiment of the present invention, the method further includes: matching the current position locating characteristics of the equipment to be located with the position locating characteristics in a position database, and determining the current position of the equipment to be located according to the matching result.
Here, the E-SMLC adopts euclidean distance definition, matches the current position location feature of the device to be positioned with the position location features in the position database, calculates the euclidean distance between the current position location feature of the device to be positioned and each position location feature in the position database, and determines the current position of the device to be positioned according to the value with the minimum euclidean distance.
The specific definable formula is:
Figure BDA0001017664150000081
q represents the Euclidean distance, n represents the number of the equipment to be positioned, j represents a position positioning feature vector in the position database, c represents the current position positioning feature of the equipment to be positioned, d represents the current position positioning feature of the corresponding equipment to be positioned in the position database, and rho representscjAnd ρdjRespectively representing the transmission path loss ratio of the equipment to be positioned in the current position positioning characteristic and the corresponding LMU in the position database.
In the embodiment of the invention, according to the received power and the transmitting power measured by the measuring base station, the position positioning feature set in the area where the equipment to be positioned is located is selected as the position database. The specific location database is shown in table 1:
serial number Cell id X Y ρ1 ρ2 … ρn
—— / *** *** *** *** *** ***
TABLE 1
Wherein, "-" represents the current position serial number of a certain position in the position database, "/" represents the cell id of the current position, "X" represents the abscissa information of the current position, and "Y" represents the ordinate information of the current position"p" of1"represents the transmission path loss ratio between the currently located device and the first LMU," ρ2"represents the transmission path loss ratio between the currently located device and the second LMU," …, ρn"represents the transmission path loss ratio between the currently positioned equipment and the nth LMU, and". times.. X. "represents the actually corresponding measured data.
In the embodiment of the invention, the E-SMLC acquires a plurality of matched positions where the current position locating feature of the equipment to be located is closest to the position locating feature in the position database; and carrying out weighted average on the acquired position characteristic information of the plurality of matched positions, and determining the current position of the equipment to be positioned.
In the embodiment of the present invention, three or four of the multiple matching positions are optimal, and after performing weighted average on the obtained location feature information of the multiple matching positions, the current position of the device to be positioned is determined.
The specific definable formula is:
Figure BDA0001017664150000091
Figure BDA0001017664150000092
wherein x represents the current abscissa position of the device to be positioned; y represents the current vertical coordinate position of the equipment to be positioned; m represents the number of matching positions; k represents the serial number of the matching position; w is akA weight representing the matching location; x is the number ofkA weight representing a current lateral coordinate position of a device to be positioned; y iskA weight representing the current longitudinal coordinate position of the device to be positioned.
wkSpecifically, the method is obtained by a weighted neighbor method, and a specific definable formula is as follows:
Figure BDA0001017664150000093
Figure BDA0001017664150000094
wherein epsilon is the smallest real constant, which is used to avoid the situation that the denominator is "0" in the formula, and the weights of the matching positions are obtained by performing a summation function on a plurality of matching positions.
Fig. 2 is a schematic network diagram of information processing in the embodiment of the present invention, where a device to be located takes UE as an example, as shown in fig. 2, including: a Mobility Management Entity (MME), a measurement base station, an E-SMLC, and a UE, and other network elements such as G-SMLC, for details, see 3GPP related protocols. The LMU is embedded in the measurement base station and is a positioning logic device in the measurement base station, and the LMU comprises resources such as PHY, MAC, RRU, BBU, antenna and the like. Specifically, MME is mainly responsible for processing signaling between UE and a measurement base station and E-SMLC, when MME receives a positioning request sent by UE, MME sends the obtained positioning request message to E-SMLC through signaling SLs interface, after E-SMLC receives the positioning request message sent by MME, the measurement request message for measuring the current position of UE is sent to LMU embedded in BBU (+ LMU) in the measurement base station through signaling interface LPPa + SLm, after LMU receives the measurement request message sent by E-SMLC, ENB in the area where UE is located is firstly determined by BBU (+ LMU) in the measurement base station, then position information covering a plurality of LMUs in the area where UE is located is determined, according to the position information of the LMUs, the minimum transmitting power of the UE transmitting measurement signals is determined, measurement signal resources are configured to UE, according to the measurement signals transmitted by UE, measuring the receiving power of a measuring signal transmitted by UE, determining the transmitting power of the measuring signal transmitted by the UE, reporting the receiving power and the transmitting power or the ratio of the receiving power to the transmitting power to an E-SMLC, constructing a channel path loss by the E-SMLC according to the ratio of the receiving power to the transmitting power, taking the constructed channel path loss as the position location characteristic of the UE, determining the current position location characteristic of the UE according to the position location characteristic, and matching the position location characteristic of the UE with the position location characteristic information in a position database by the E-SMLC to locate the current position of the UE.
Fig. 3 is a schematic diagram of an information processing flow in an embodiment of the present invention, and as shown in fig. 3, a flow of receiving, by an MME, a positioning request sent by a UE refers to a 3GPP related protocol, and here, only how an MME initiates a positioning process is described. The MME sends the 1.Location Request message to the E-SMLC through a signaling SLs interface; the Location Request message carries parameters such as ID information, positioning times, measurement time interval and the like of the UE; after receiving the 1.Location Request message sent by MME, E-SMLC sends 2.Measurement Request message to LMU embedded in the Measurement base station, after the LMU embedded in the Measurement base station receives the 2.Measurement Request message sent by E-SMLC, the Measurement base station determines the SRS resource ENB of UE of this positioning UE, and configures the SRS resource ENB configuration UE SRS resource for the UE, the Measurement base station firstly determines ENB in the area of the UE, then determines LMU needed in the position area covering the UE, according to the SRS sent by the UE, the determined LMU measures the SRS receiving power of UE sent by the UE, determines the sending power of UE, and sends the sending power and the receiving power to the E-SMLC through the 3.b Measurement Request message, after the E-SMLC receives the 3.b Measurement Request message, the E-SMLC matches the position in the position characteristic database, and positioning the current position of the UE, and sending the positioning result to the MME by using a Location Request message. The subsequent flow is referred to 3 GPP-related protocols.
Fig. 4 is a flowchart illustrating a downlink information processing method according to an embodiment of the present invention; as shown in fig. 4, the method includes:
step 401, determining the receiving power of a plurality of positioning measurement units transmitting measurement signals in a base station to be positioned and receiving the measurement signals, and the transmitting power of the plurality of positioning measurement units transmitting the measurement signals;
after receiving a positioning request sent by a device to be positioned, a measurement base station first determines position information of a plurality of positioning measurement units capable of covering the device to be positioned in the measurement base station according to the positioning request of the device to be positioned, then determines minimum transmission power of the plurality of positioning measurement units for transmitting measurement signals and capable of covering the device to be positioned according to the position information of the plurality of positioning measurement units, and configures measurement signal resources for the plurality of positioning measurement units according to the minimum transmission power so that the device to be positioned can receive the measurement signals. Here, the positioning measurement unit may also be a BBU and an RRU, and the measurement signal resource may also be an SRS. The equipment to be positioned receives and measures the receiving power of the measuring signals transmitted by the plurality of positioning measuring units, and reports the measured receiving power to the measuring base station; and the measuring base station sends the obtained ratio of the receiving power and the transmitting power or the ratio of the receiving power and the transmitting power to the E-SMLC.
Step 402, constructing channel path loss according to the ratio of the receiving power to the transmitting power, and using the channel path loss as the current position locating characteristic of the equipment to be located;
here, after the E-SMLC receives the ratio of the received power and the transmission power or the ratio of the received power and the transmission power, channel path loss is constructed according to the ratio of the received power and the transmission power, and the constructed channel path loss is used as a current position location feature of the device to be located.
Step 403, determining the current position of the device to be positioned according to the current position positioning characteristics of the device to be positioned.
Here, the ratio of the transmission power of the measurement signal transmitted by the device to be positioned to the reception power of the measurement signal transmitted by the device to be positioned received by the LMU in the measurement base station is stable, that is, the loss ratio of the transmission path between the device to be positioned and the LMU is stable, that is, the transmission loss of the signal is related to the transmission and reception positions. Therefore, the E-SMLC can accurately position the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned.
In the embodiment of the present invention, when watt (W) is taken as a power unit, a formula can be defined as:
Figure BDA0001017664150000111
where ρ is the transmission path loss ratio between the device to be positioned and the LMU, prMeasuring the received power, p, of a measurement signal emitted by a device to be positioned for an LMUtThe transmission power of the measurement signal for the device to be positioned is transmitted, and rho is less than or equal to 1, pt≥pr。
Or in decibels "dB" as a unit of power, the formula is defined as: p ═ pr′-pt′(dB)；
Wherein (dB) represents the ratio of the received power to the transmitted power, p is the transmission path loss ratio between the equipment to be positioned and the LMU, and pr' measuring the received power, p, of the measurement signal emitted by the device to be positioned for the LMUt' Transmission Power for transmitting measurement signals for the device to be positioned, and p > 0, pt′≥pr′。
In the embodiment of the invention, the E-SMLC matches the current position locating characteristics of the equipment to be located with the position locating characteristics in a position database, and determines the current position of the equipment to be located according to the matching result.
Here, the E-SMLC adopts euclidean distance definition, matches the current position location feature of the device to be positioned with the position location features in the position database, calculates the euclidean distance between the current position location feature of the device to be positioned and each position location feature in the position database, and determines the current position of the device to be positioned according to the value with the minimum euclidean distance.
The specific definable formula is:
Figure BDA0001017664150000121
q represents the Euclidean distance, n represents the number of the equipment to be positioned, j represents a position positioning feature vector in the position database, c represents the current position positioning feature of the equipment to be positioned, d represents the current position positioning feature of the corresponding equipment to be positioned in the position database, and rho representscjAnd ρdjRespectively represent the equipment to be positioned atThe current position location characteristics are compared to the transmission path loss ratio of the corresponding LMU in the location database.
In the embodiment of the invention, according to the receiving power and the transmitting power measured by the LMU, the position location characteristic set in the area where the equipment to be positioned is located is selected as the position database. The specific location database is shown in table 1.
In the embodiment of the invention, the E-SMLC acquires a plurality of matched positions where the current position locating feature of the equipment to be located is closest to the position locating feature in the position database; and after carrying out weighted average on the acquired position characteristic information of the plurality of matched positions, determining the current position of the equipment to be positioned.
In the embodiment of the present invention, three or four of the multiple matching positions are optimal, and after performing weighted average on the obtained location feature information of the multiple matching positions, the current position of the device to be positioned is determined.
The specific definable formula is:
Figure BDA0001017664150000122
Figure BDA0001017664150000123
wherein x represents the current abscissa position of the device to be positioned; y represents the current vertical coordinate position of the equipment to be positioned; m represents the number of matching positions; k represents the serial number of the matching position; w is akA weight representing the matching location; x is the number ofkA weight representing a current lateral coordinate position of a device to be positioned; y iskA weight representing the current longitudinal coordinate position of the device to be positioned.
wkSpecifically, the method is obtained by a weighted neighbor method, and a specific definable formula is as follows:
Figure BDA0001017664150000124
Figure BDA0001017664150000131
wherein epsilon is the smallest real constant, which is used to avoid the situation that the denominator is "0" in the formula, and the weights of the matching positions are obtained by performing a summation function on a plurality of matching positions.
FIG. 5 is a block diagram of an embodiment of an uplink information processing system; as shown in fig. 5, the system includes: a measurement base station 51 and a positioning server 52; wherein:
the measurement base station 51 is configured to measure, according to a measurement signal transmitted by a device to be positioned, a reception power of the measurement signal, and determine a transmission power of the measurement signal;
the positioning server 52 is configured to construct a channel path loss according to the ratio of the received power to the transmitting power, and use the channel path loss as a current position positioning feature of the device to be positioned; and determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned.
Here, the measurement base station 51 includes an ENB and an LMU, where the ENB includes a BBU and an RRU. The LMU can be set up independently or combined with the ENB, and when the LMU is set up independently, only the transmitting or receiving power of the measurement signal can be measured; when the ENB and the LMU are combined, the LMU is a logic device and is used for sharing resources such as BBU, RRU, antenna and the like of the ENB, and the measuring base station can measure the transmitting power or the receiving power of a measuring signal and can also enable a plurality of devices to be positioned to carry out service communication. Here, the ENB and the LMU are set up in a merged manner as an example. After receiving a positioning request of a device to be positioned, the measurement base station 51 determines, according to the positioning request of the device to be positioned, an ENB in an area where the device to be positioned is located first, then determines location information of a plurality of LMUs in the measurement base station, and determines, according to the location information of the plurality of LMUs, a minimum transmission power of the device to be positioned, which transmits a measurement signal and can cover the plurality of LMUs; and the measurement base station configures measurement signal resources for the equipment to be positioned according to the minimum transmitting power so that the plurality of LMUs can receive the measurement signals. Wherein, the device to be positioned may be a UE, and the measurement signal may be an SRS.
After receiving the measurement signal resource configured by the measurement base station 51, the device to be positioned transmits a measurement signal according to the relevant parameters of 3 GPP. And the LMU measures the receiving power of the measurement signal transmitted by the equipment to be positioned according to the measurement signal transmitted by the equipment to be positioned, and determines the transmitting power of the measurement signal transmitted by the equipment to be positioned.
In the embodiment of the present invention, the measurement base station 51 may determine, as the measurement signal resource configured for the device to be positioned, the transmission power for transmitting measurement information for the device to be positioned; the device to be positioned may report the transmission power of the measurement signal to the measurement base station 51. The measurement base station 51 reports the obtained transmission power and reception power of the measurement signal, or the ratio of the transmission power and the reception power, to the positioning server 52.
The positioning server 52 may be an E-SMLC, and after receiving the ratio between the received power and the transmitting power or between the received power and the transmitting power, construct a channel path loss according to the ratio between the transmitting power and the transmitting power, and use the constructed channel path loss as the current position positioning feature of the device to be positioned. As mentioned above, the ratio of the transmission power of the measurement signal transmitted by the device to be positioned to the reception power of the measurement base station 51 receiving the measurement signal transmitted by the device to be positioned is stable, that is, the loss ratio of the transmission path between the device to be positioned and the measurement base station 51 is stable. Therefore, the positioning server 52 can accurately position the current position of the device to be positioned according to the current position positioning feature of the device to be positioned.
In the embodiment of the present invention, when the watt "W" is taken as the power unit, the formula can be defined as:
Figure BDA0001017664150000141
where ρ is the transmission path loss ratio between the device to be positioned and the LMU in the measurement base station 51, prMeasuring the received power, p, of the measurement signal emitted by the device to be positioned for the LMU in the measuring base station 51tThe transmission power of the measurement signal for the device to be positioned is transmitted, and rho is less than or equal to 1, pt≥pr。
Or in decibels "dB" as a unit of power, the formula is defined as: p ═ pr′-pt′(dB)；
Where (dB) represents the ratio of received power to transmitted power, ρ is the transmission path loss ratio between the device to be positioned and the LMU in the measurement base station 51, pr' measuring the received power of the measurement signal transmitted by the device to be positioned, p, for the LMU in the measuring base station 51t' Transmission Power for transmitting measurement signals for the device to be positioned, and p > 0, pt′≥pr′。
In this embodiment of the present invention, the positioning server 52 is further configured to match the current position-location feature of the device to be positioned with a position-location feature in a position database, and determine the current position of the device to be positioned according to the matching result.
Here, the positioning server 52 adopts euclidean distance definition to match the current position location feature of the device to be positioned with the position location features in the position database, calculate the euclidean distance between the current position location feature of the device to be positioned and each position location feature in the position database, and determine the current position of the device to be positioned according to the value with the minimum euclidean distance.
The specific definable formula is:
Figure BDA0001017664150000142
q represents the Euclidean distance, n represents the number of the equipment to be positioned, j represents a position positioning feature vector in the position database, c represents the current position positioning feature of the equipment to be positioned, and d represents the corresponding position to be positioned in the position databaseCurrent position location characteristic of the location device, pcjAnd ρdjRespectively representing the transmission path loss ratio of the LMU in the corresponding measuring base station 51 in the current position location characteristic and position database of the equipment to be positioned.
In the embodiment of the present invention, according to the received power and the transmitted power measured by the measurement base station 51, the position location feature set in the area where the device to be located is selected as the position database. The specific location fingerprint library is shown in table 1.
In this embodiment of the present invention, the positioning server 52 is further configured to obtain a plurality of matching positions where the current position location feature of the device to be positioned is closest to the position location features in the position database; and after carrying out weighted average on the acquired position characteristics of the plurality of matched positions, determining the current position of the equipment to be positioned.
Here, the positioning server 52 obtains, through euclidean distance definition, a plurality of matching positions where the current position location feature of the device to be positioned is closest to the position location feature in the position database, in the embodiment of the present invention, three or four of the plurality of matching positions are optimal, and determines the current position of the device to be positioned after performing weighted average on the obtained position features of the plurality of matching positions.
The specific definable formula is:
Figure BDA0001017664150000151
Figure BDA0001017664150000152
wherein x represents the current abscissa position of the device to be positioned; y represents the current vertical coordinate position of the equipment to be positioned; m represents the number of matching positions; k represents the serial number of the matching position; w is akA weight representing the matching location; x is the number ofkA weight representing a current lateral coordinate position of a device to be positioned; y iskA weight representing the current longitudinal coordinate position of the device to be positioned.
wkSpecifically, the method is obtained by a weighted neighbor method, and a specific definable formula is as follows:
Figure BDA0001017664150000153
Figure BDA0001017664150000154
wherein epsilon is the smallest real constant, which is used to avoid the situation that the denominator is "0" in the formula, and the weights of the matching positions are obtained by performing a summation function on a plurality of matching positions. Detailed network processing flows may refer to corresponding method embodiments.
Fig. 6 is a schematic diagram of a composition structure of a downlink information processing system according to an embodiment of the present invention; as shown in fig. 6, includes: the measurement base station 61 and the positioning server 62; wherein:
the measurement base station 61 is configured to determine the receiving power of the measurement signal transmitted by the multiple positioning measurement units in the measurement base station and the transmitting power of the measurement signal transmitted by the multiple positioning measurement units, where the measurement signal is received by the device to be positioned;
the positioning server 62 is configured to construct a channel path loss according to a ratio of the received power to the transmitting power, and use the channel path loss as a current position positioning feature of the device to be positioned; and determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned.
Here, the measurement base station 61 may be an ENB + LMU, and after receiving a location request of a device to be located, according to the location request of the device to be located, first determine an ENB in an area where the device to be located is located, then determine location information of a plurality of location measurement units that can cover the device to be located in the measurement base station 61, determine, according to the location information of the plurality of location measurement units, minimum transmit power that the plurality of location measurement units can cover the device to be located and transmit measurement signals, and configure measurement signal resources for the plurality of location measurement units according to the minimum transmit power, so that the device to be located can receive the measurement signals. Here, the positioning measurement unit may also be a BBU and an RRU, and the measurement signal resource may also be an SRS.
The positioning measurement units transmit measurement signals according to measurement signal resources configured by the measurement base station 61, the device to be positioned receives and measures the received power of the measurement signals transmitted by the positioning measurement units, and reports the measured received power to the measurement base station 61, and meanwhile, the positioning measurement units also report the transmission power of the measurement signals transmitted by the positioning measurement units to the measurement base station 61. The measurement base station 61 sends the obtained received power and transmission power or the ratio of the received power and the transmission power to the positioning server 62. The positioning server 62 may be an E-SMLC, and after receiving the received power and the transmission power sent by the measurement base station 61 or the ratio of the received power to the transmission power, construct a channel path loss according to the ratio of the received power to the transmission power, and use the channel path loss as the current position positioning feature of the device to be positioned. And determining the current position of the equipment to be positioned according to the position positioning characteristics. The ratio of the transmission power of the measurement signal transmitted by the device to be positioned to the reception power of the measurement base station 61 receiving the measurement signal transmitted by the device to be positioned is stable, i.e. the signal transmission loss is related to the transmission power and the reception power position. Therefore, the positioning server 62 can accurately position the current position of the device to be positioned according to the current position positioning feature of the device to be positioned.
In the embodiment of the present invention, when the watt "W" is taken as the power unit, the formula can be defined as:
Figure BDA0001017664150000161
where ρ is the transmission path loss ratio between the device to be positioned and the LMU in the measurement base station 61, prFor the measurement of the received power, p, of the measurement signal emitted by the device to be positioned for the LMU in the base station 61tThe transmission power of the measurement signal for the device to be positioned is transmitted, and rho is less than or equal to 1, pt≥pr。
Or in decibels "dB" as a unit of power, the formula is defined as: p ═ pr′-pt′(dB)；
Where (dB) represents the ratio of received power to transmitted power, ρ is the transmission path loss ratio between the device to be positioned and the LMU in the measurement base station 61, pr' measurement of the received power of the measurement signal emitted by the device to be positioned, p, for the LMU in the measuring station 61t' Transmission Power for transmitting measurement signals for the device to be positioned, and p > 0, pt′≥pr′。
In this embodiment of the present invention, the positioning server 62 is further configured to match the current position location feature of the device to be positioned with a position location feature in a position database, and determine the current position of the device to be positioned according to the matching result.
Here, the positioning server 62 adopts euclidean distance definition to match the current position location feature of the device to be positioned with the position location feature in the position database, calculate the euclidean distance between the current position location feature of the device to be positioned and each position location feature in the position database, and determine the current position of the device to be positioned according to the value with the minimum euclidean distance.
The specific definable formula is:
Figure BDA0001017664150000171
q represents the Euclidean distance, n represents the number of the equipment to be positioned, j represents a position positioning feature vector in the position database, c represents the current position positioning feature of the equipment to be positioned, d represents the current position positioning feature of the corresponding equipment to be positioned in the position database, and rho representscjAnd ρdjRespectively represent the transmission path loss ratio of the LMU in the corresponding measuring base station 61 in the current position location characteristic and the position database of the equipment to be located.
In the embodiment of the present invention, according to the received power and the transmitted power measured by the measurement base station 61, the position location feature set in the area where the device to be located is selected as the position database. The specific location fingerprint library is shown in table 1.
In this embodiment of the present invention, the positioning server 62 is further configured to obtain a plurality of matching positions where the current position location feature of the device to be positioned is closest to the position location features in the position database; and after carrying out weighted average on the acquired position characteristics of the plurality of matched positions, determining the current position of the equipment to be positioned.
Here, the positioning server 62 obtains, through euclidean distance definition, a plurality of matching positions where the current position location feature of the device to be positioned is closest to the position location feature in the position database.
The specific definable formula is:
Figure BDA0001017664150000181
Figure BDA0001017664150000182
wherein x represents the current abscissa position of the device to be positioned; y represents the current vertical coordinate position of the equipment to be positioned; m represents the number of matching positions; k represents the serial number of the matching position; w is akA weight representing the matching location; x is the number ofkA weight representing a current lateral coordinate position of a device to be positioned; y iskA weight representing the current longitudinal coordinate position of the device to be positioned.
wkSpecifically, the method is obtained by a weighted neighbor method, and a specific definable formula is as follows:
Figure BDA0001017664150000183
Figure BDA0001017664150000184
wherein epsilon is the smallest real constant, which is used to avoid the situation that the denominator is "0" in the formula, and the weights of the matching positions are obtained by performing a summation function on a plurality of matching positions.
Detailed network processing flows may refer to corresponding method embodiments.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (18)

1. An information processing method, characterized in that the method comprises:
measuring the receiving power of the measuring signal according to the measuring signal transmitted by the equipment to be positioned, and determining the transmitting power of the measuring signal;
constructing channel path loss according to the ratio of the receiving power to the transmitting power, and using the channel path loss as the current position positioning characteristic of the equipment to be positioned;
determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned,
the method further comprises the following steps:
after receiving a positioning request of a device to be positioned, configuring a measurement signal resource for the device to be positioned;
the configuring measurement signal resources for the device to be positioned includes:
determining the position information of a plurality of positioning measurement units in a measurement base station;
determining the minimum transmitting power of the equipment to be positioned for transmitting the measuring signal, which can cover the plurality of positioning measuring units, according to the position information of the plurality of positioning measuring units;
and configuring measurement signal resources for the equipment to be positioned according to the minimum transmitting power so that the plurality of positioning measurement units can receive the measurement signals.
2. The method of claim 1, wherein the determining the transmit power of the measurement signal comprises:
and determining the measurement signal resource configured for the equipment to be positioned as the transmission power of the measurement signal transmitted by the equipment to be positioned.
3. The method of claim 1, wherein the determining the transmit power of the measurement signal further comprises:
and receiving the transmitting power of the measuring signal reported by the equipment to be positioned.
4. The method of claim 1, wherein the determining the current location of the device to be located comprises:
matching the current position locating feature of the equipment to be located with the position locating feature in a position database;
and determining the current position of the equipment to be positioned according to the matching result.
5. The method of claim 4, wherein the determining the current location of the device to be located further comprises:
obtaining a plurality of matching positions where the current position locating feature of the equipment to be positioned is closest to the position locating features in the position database;
and after carrying out weighted average on the acquired position characteristics of the plurality of matched positions, determining the current position of the equipment to be positioned.
6. An information processing method, characterized in that the method comprises:
determining the receiving power of a plurality of positioning measurement units transmitting measurement signals in a base station to be positioned and receiving the measurement signals, and the transmitting power of the plurality of positioning measurement units transmitting the measurement signals;
constructing channel path loss according to the ratio of the receiving power to the transmitting power, and using the channel path loss as the current position positioning characteristic of the equipment to be positioned;
determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned,
the method further comprises the following steps:
after receiving a positioning request of a device to be positioned, configuring measurement signal resources for a plurality of positioning measurement units in the measurement base station;
the configuring measurement signal resources for a plurality of positioning measurement units in the measurement base station includes:
determining location information for the plurality of positioning measurement units;
determining the minimum transmitting power which can cover the equipment to be positioned and is used for transmitting the measuring signals by the plurality of positioning measuring units according to the position information of the plurality of positioning measuring units;
and configuring measurement signal resources for the plurality of positioning measurement units according to the minimum transmitting power so that the equipment to be positioned can receive the measurement signals.
7. The method of claim 6, wherein the determining the receiving power of the measurement signals transmitted by a plurality of positioning measurement units in the measurement base station and the transmitting power of the measurement signals transmitted by the plurality of positioning measurement units comprises:
and receiving the receiving power of the measurement signal reported by the equipment to be positioned and the transmitting power of the measurement signal reported by the plurality of positioning measurement units.
8. The method of claim 6, wherein the determining the current location of the device to be located comprises:
matching the current position locating feature of the equipment to be located with the position locating feature in a position database;
and determining the current position of the equipment to be positioned according to the matching result.
9. The method of claim 8, wherein the determining the current location of the device to be located further comprises:
obtaining a plurality of matching positions where the current position locating feature of the equipment to be positioned is closest to the position locating features in the position database;
and after carrying out weighted average on the acquired position characteristics of the plurality of matched positions, determining the current position of the equipment to be positioned.
10. An information processing system, the system comprising: a measurement base station and a positioning server; wherein the content of the first and second substances,
the measuring base station is used for measuring the receiving power of the measuring signal according to the measuring signal transmitted by the equipment to be positioned and determining the transmitting power of the measuring signal;
the positioning server is used for constructing channel path loss according to the ratio of the receiving power to the transmitting power, and the channel path loss is used as the current position positioning characteristic of the equipment to be positioned; determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned,
the measurement base station is further configured to configure a measurement signal resource for the device to be positioned after receiving a positioning request of the device to be positioned;
the configuring measurement signal resources for the device to be positioned includes:
the measuring base station determines the position information of a plurality of positioning measuring units in the measuring base station; determining the minimum transmitting power of the equipment to be positioned for transmitting the measuring signal, which can cover the plurality of positioning measuring units, according to the position information of the plurality of positioning measuring units; and configuring measurement signal resources for the equipment to be positioned according to the minimum transmitting power so that the plurality of positioning measurement units can receive the measurement signals.
11. The system of claim 10, wherein the measurement base station is further configured to determine a transmission power for transmitting a measurement signal for the device to be positioned from the measurement signal resources configured for the device to be positioned.
12. The system of claim 10, wherein the measurement base station is further configured to receive the transmission power of the measurement signal reported by the device to be positioned.
13. The system of claim 10, wherein the location server is further configured to match a current location-specific feature of the device to be located with a location-specific feature in a location database, and determine the current location of the device to be located according to the matching result.
14. The system of claim 10, wherein the location server is further configured to obtain a plurality of matching locations where the current position-location feature of the device to be located is closest to the position-location features in the location database; and after carrying out weighted average on the acquired position characteristics of the plurality of matched positions, determining the current position of the equipment to be positioned.
15. An information processing system, the system comprising: a measurement base station and a positioning server; wherein the content of the first and second substances,
the measurement base station is used for determining the receiving power of a device to be positioned for receiving measurement signals transmitted by a plurality of positioning measurement units in the measurement base station and the transmitting power of the measurement signals transmitted by the plurality of positioning measurement units;
the positioning server is used for constructing channel path loss according to the ratio of the receiving power and the transmitting power, and the channel path loss is used as the current position positioning characteristic of the equipment to be positioned; determining the current position of the equipment to be positioned according to the current position positioning characteristics of the equipment to be positioned;
the measurement base station is further configured to configure measurement information resources for a plurality of positioning measurement units in the measurement base station after receiving a positioning request of the device to be positioned;
the configuring measurement signal resources for a plurality of positioning measurement units in the measurement base station includes:
the measurement base station determines the position information of the plurality of positioning measurement units; determining the minimum transmitting power which can cover the equipment to be positioned and is used for transmitting the measuring signals by the plurality of positioning measuring units according to the position information of the plurality of positioning measuring units; and configuring measurement signal resources for the plurality of positioning measurement units according to the minimum transmitting power so that the equipment to be positioned can receive the measurement signals.
16. The system of claim 15, wherein the measurement base station is further configured to receive a received power of the measurement signal reported by the device to be positioned and a transmission power of the measurement signal reported by the multiple positioning measurement units.
17. The system of claim 15, wherein the location server is further configured to match the current position-location features of the device to be located with position-location features in a location database, and determine the current location of the device to be located according to the matching result.
18. The system of claim 17, wherein the location server is further configured to obtain a plurality of matching locations where the current position-location feature of the device to be located is closest to the position-location features in the location database; and after carrying out weighted average on the acquired position characteristics of the plurality of matching positions, determining the equipment to be positioned.
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