WO2017084427A1

WO2017084427A1 - Method and device for positioning terminal

Info

Publication number: WO2017084427A1
Application number: PCT/CN2016/099244
Authority: WO
Inventors: 王浩; 徐法禄
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-11-18
Filing date: 2016-09-18
Publication date: 2017-05-26
Also published as: CN106714100A

Abstract

Provided are a method and device for positioning a terminal. The method comprises: sending instruction information to a terminal in a predetermined cell provided with one or more radio frequency units, wherein the instruction information instructs the terminal to transmit a sounding reference signal at one or more time intervals in an LTE time slot, each time interval corresponds to one radio frequency unit, and over one time interval, only a radio frequency unit corresponding to the time interval in the one or more radio frequency units is configured to receive the sounding reference signal transmitted by the terminal; acquiring a target time interval, in which the sounding reference signal transmitted by the terminal is received, from the one or more time intervals; and searching the one or more radio frequency units for a target radio frequency unit corresponding to the target time interval, and determining that a position where the terminal is currently located is within a signal coverage range of the target radio frequency unit. The embodiments of the present invention solve the problem in the related art of low positioning accuracy since a terminal is positioned in a QCELL merged state.

Description

Terminal positioning method and device

Technical field

The embodiments of the present invention relate to the field of communications, and in particular, to a method and an apparatus for positioning a terminal.

Background technique

In the second generation (2G) and third generation (3G) communication systems, the indoor division is usually used for indoor coverage. The entire indoor building is a cell, and the 2G/3G positioning is based on the community. It is impossible to locate the indoor level for indoor users.

Multi-mode integrated cell (Quad-Band CELL, QCELL for short) system is an innovative active room sub-solution, including pico Remote Radio Unit (pico RRU), aggregation unit pBridge and indoor baseband processing unit (Building Baseband Unit, BBU for short) three network elements, network architecture diagram shown in Figure 1, as shown in Figure 1, QCELL system includes indoor baseband processing unit BBU, convergence unit pBridge, milliwatt power The remote radio unit pico RRU three network elements. In Figure 1, 1 to 10 are milliwatt-class remote radio unit pico RRUs, providing milliwatt-level 2G/3G/4G signals; and 11, 12 are aggregation units pBridge, connected to the far-end of milliwatt power through a network cable. The radio unit pico RRU is powered by the PoE method for the remote radio unit pico RRU of the milliwatt power, and the convergence unit pBridge can be cascaded by the optical fiber; 13 is the indoor baseband processing unit BBU for the 2G/3G/4G baseband signal. Processing; 14, 15 is an LTE terminal UE. Each aggregation unit pBridge can connect a plurality of milliwatt power remote radio unit pico RRUs, and each indoor baseband processing unit BBU can be connected to several convergence units pBridge, and the convergence units pBridge can be cascaded. A remote radio unit pico RRU belonging to a plurality of (including 1) milliwatt-level power of the same indoor baseband processing unit BBU may constitute an LTE logical cell, and this feature is simply referred to as cell merging.

Before the launch of QCELL, mobile operators using the room division system could not cut into the indoor positioning field. After deploying QCELL, the more accurate indoor positioning using LTE also has Technical feasibility.

The positioning technology in the 3GPP standard is based on a cell. For an indoor scenario in which QCELL is deployed, if each pico RRU constitutes one LTE cell, the positioning under the QCELL can also be implemented by using a cell-based positioning technology. The premise of adopting this method is that each pico RRU acts as an LTE logical cell. Since the pico RRU's output power is in the milliwatt level and the coverage radius is only 10 to 20 meters, if each pico RRU forms an LTE cell, deploying one floor will consume a lot of hardware and software costs. Therefore, in actual deployment, a cell merging method is usually adopted to form multiple pico RRUs into one LTE cell.

In the cell merging state, multiple pico RRUs form a cell, and the coverage radius of the cell usually reaches 100 meters. In this scenario, the cell-based positioning technology cannot meet the positioning accuracy requirements.

In the related art, in the QCELL cell merge state, the positioning of the terminal in units of the combined cell coverage results in low positioning accuracy, and an effective solution has not been proposed.

Summary of the invention

The embodiment of the present invention provides a method and a device for locating a terminal, so as to solve at least the problem that the positioning of the terminal is performed in the unit of the combined cell coverage in the QCELL cell merge state in the related art, resulting in low positioning accuracy.

According to an aspect of the embodiments of the present invention, a method for locating a terminal includes: transmitting indication information to a terminal in a predetermined cell in which one or more radio frequency units are provided, wherein the indication information indicates that the terminal is Transmitting sounding reference signals in one or more time intervals in one LTE time slot, each of the time intervals corresponding to one of the radio frequency units, and only one or more of the one or more radio frequency units are associated with one of the time intervals The radio frequency unit corresponding to the time interval is configured to receive the sounding reference signal transmitted by the terminal; acquire a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals; a target radio frequency unit corresponding to the target time interval in the one or more radio frequency units, and determining that the current location of the terminal is a signal coverage range of the target radio frequency unit Inside.

Optionally, before sending the indication information to the terminal in the predetermined cell where the one or more radio frequency units are provided, the method further includes: sending the one or more time intervals to the aggregation unit and receiving the sounding reference signal A mapping relationship of one or more transmission channels, wherein only one of the transmission channels is opened at each of the time intervals, and the aggregation unit is connected to the radio frequency unit through the one or more transmission channels.

Optionally, after the mapping relationship between the one or more time intervals and the one or more transmission channels for receiving the sounding reference signal is sent to the aggregation unit, the method further includes: sequentially controlling the according to the mapping relationship One of the one or more transmission channels is open, wherein only one of the transmission channels is opened at each of the time intervals, and the transmission channels other than the ones of the one or more transmission channels are closed Transmission channel.

Optionally, the controlling, according to the mapping relationship, one of the one or more transmission channels to be turned on includes: starting, at a time when the terminal starts transmitting the sounding reference signal, according to the The mapping relationship in turn controls the opening of one of the one or more transmission channels.

Optionally, the acquiring, by the acquiring, the target time interval of the sounding reference signal transmitted by the terminal in the one or more time intervals comprises: starting from a time when the terminal starts transmitting the sounding reference signal At the beginning time, the following steps are repeatedly performed until the target time interval is obtained, wherein the current time interval is the first time interval of the one or more time intervals: whether the current time interval is detected or not The transmission channel corresponding to the current time interval receives the sounding reference signal transmitted by the terminal; if the sounding reference signal is received, the target time interval is acquired; if the sounding reference signal is not received, Determining whether the current time interval is the last time interval of the one or more time intervals; if the current time interval is not the last time interval, using the next time interval of the current time interval as The current time interval; if the current time interval is the last time interval, the first time The current time interval as the interval.

According to another aspect of the embodiments of the present invention, a positioning apparatus for a terminal is provided, including: a first sending module, configured to send to a terminal in a predetermined cell where one or more radio frequency units are provided Sending indication information, wherein the indication information indicates that the terminal transmits sounding reference signals in one or more time intervals in one LTE time slot, each of the time intervals corresponding to one of the radio frequency units, in one of the And setting, in the time interval, only the radio frequency unit corresponding to the time interval in the one or more radio frequency units to receive the sounding reference signal transmitted by the terminal; and acquiring, configured to acquire the one or more times Receiving, in the interval, a target time interval of the sounding reference signal transmitted by the terminal; the searching module is configured to search for a target radio frequency unit corresponding to the target time interval in the one or more radio frequency units, and determine the location The current location of the terminal is within the signal coverage of the target radio unit.

Optionally, the apparatus further includes: a second sending module, configured to send the one or more time intervals to the convergence unit before transmitting the indication information to the terminal in the predetermined cell where the one or more radio frequency units are provided a mapping relationship with one or more transmission channels for receiving the sounding reference signal, wherein only one of the transmission channels is turned on at each of the time intervals, and the aggregation unit passes the one or more transmissions A channel is connected to the radio unit.

Optionally, the device further includes: a control module, configured to: after transmitting the mapping relationship between the one or more time intervals and one or more transmission channels for receiving the sounding reference signal to the aggregation unit, according to The mapping relationship sequentially controls one of the one or more transmission channels to be turned on, wherein only one of the transmission channels is turned on at each of the time intervals, and the one or more transmission channels are simultaneously closed A transmission channel other than the open transmission channel.

Optionally, the control module is further configured to start, at a start time, the time when the terminal starts transmitting the sounding reference signal, and sequentially control one of the one or more transmission channels to be opened according to the mapping relationship. .

Optionally, the acquiring module acquires, by using the following step, a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals: starting, by the terminal, transmitting the sounding reference signal The time is the starting time, and the following steps are repeatedly performed until the target time interval is obtained, wherein the current time interval is the first time interval of the one or more time intervals: detecting at the current time interval Whether the sounding reference signal transmitted by the terminal is received through a transmission channel corresponding to the current time interval; Obtaining the target time interval to the sounding reference signal; if the sounding reference signal is not received, determining whether the current time interval is the last time interval of the one or more time intervals; If the current time interval is not the last time interval, the next time interval of the current time interval is used as the current time interval; if the current time interval is the last time interval, the The first time interval is taken as the current time interval.

In the embodiment of the present invention, a computer storage medium is further provided, and the computer storage medium may store an execution instruction, where the execution instruction is used to execute the positioning method of the terminal in the foregoing embodiment.

With the embodiment of the present invention, the indication information is sent to a terminal in a predetermined cell in which one or more radio frequency units are set, wherein the indication information indicates that the terminal transmits the detection in one or more time intervals in one LTE time slot. a reference signal, each of the time intervals corresponding to the radio frequency unit, in which the radio frequency unit corresponding to the time interval in the one or more radio frequency units is set to receive the sounding reference signal transmitted by the terminal; Obtaining a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals; searching for a target radio frequency unit corresponding to the target time interval in the one or more radio frequency units, and determining the terminal The current location is within the signal coverage of the target RF unit. That is, in the embodiment of the present invention, by identifying one or more time intervals in the LTE time slot and one or more radio frequency units, the method in which the terminal is covered by the radio frequency unit is identified by a time-staggered method, instead of being rough only The positioning terminal is located in a cell composed of a plurality of radio frequency unit coverage areas, and solves the problem that the positioning accuracy of the terminal is low in the combined state of the cell coverage in the QCELL cell merge state in the related art, thereby improving the positioning accuracy. The accuracy of positioning the terminal.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a QCELL network architecture in the related art;

2 is a flowchart of a method for locating a terminal according to an embodiment of the present invention;

3 is a reference diagram of a terminal positioning method according to an embodiment of the present invention;

4 is a flowchart (1) of a positioning method of a terminal according to an embodiment of the present invention;

FIG. 5 is a structural block diagram of a positioning apparatus of a terminal according to an embodiment of the present invention; FIG.

6 is a structural block diagram (1) of a positioning apparatus of a terminal according to an embodiment of the present invention;

FIG. 7 is a structural block diagram (2) of a positioning apparatus of a terminal according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

Example 1

In this embodiment, a method for locating a terminal is provided. FIG. 2 is a flowchart of a method for locating a terminal according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:

Step S202: Send indication information to a terminal in a predetermined cell that is provided with one or more radio frequency units, where the indication information indicates that the terminal transmits a sounding reference signal in one or more time intervals in one LTE time slot. One time interval corresponding to one radio frequency unit, in which only one radio frequency unit corresponding to the time interval in the one or more radio frequency units is set to receive the sounding reference signal transmitted by the terminal;

Step S204, acquiring a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals;

Step S206, searching for a target radio frequency unit corresponding to the target time interval in the one or more radio frequency units, and determining that the current location of the terminal is a signal coverage of the target radio frequency unit. Within the cover.

Optionally, in this embodiment, the application method of the positioning method of the terminal includes, but is not limited to, real-time positioning navigation and data analysis in the venue, navigation in the underground garage, and accurate location of the person in the real-time location.

The following describes the foregoing multiple application scenarios separately.

For example, in the application scenario of real-time positioning and navigation in the venue, after deploying the Quad-Band CELL (QCELL) positioning system, the users entering the venue can perform real-time positioning and navigation through the mobile APP. Several applications are navigated to a certain store, and the specific steps include: the user opens the mobile phone map APP, inputs the destination store, and uses the location as the navigation end point; the QCELL system adopts the positioning method of the terminal in the embodiment, and only works at one time interval. Setting a radio frequency unit corresponding to the time interval in the one or more radio frequency units to receive the sounding reference signal transmitted by the terminal, and accurately obtaining which milliwatt power of the remote radio unit pico RRU coverage of the user, and acquiring The specific location of the user, the positioning system sends the user's location to the mobile phone APP, and uses this location as the navigation starting point to start navigation. During the navigation process, the QCELL system periodically (in units of seconds) adopts the method in this embodiment to acquire the location of the user and update the navigation path.

Further, real-time field data analysis and statistics in the above-mentioned venues mainly include: 1) viewing the user's movement trajectory, performing property and security patrols. The specific steps include: the method of the present embodiment is used, the radio frequency unit corresponding to the time interval in one or more radio frequency units is set to receive the sounding reference signal transmitted by the terminal, and the method is obtained. All user location information under pico RRU. The location information is reported to the positioning system, and the positioning system retains the location information, and the positioning system inputs the mobile phone number of the property security, and only displays the running track of the user of the mobile phone number. 2) Carry out the flow of people, statistical analysis of passenger flow, and adjust the venue shops. The specific steps include: the QCELL system adopts the method of the embodiment, and only the radio frequency unit corresponding to the time interval in one or more radio frequency units is set to receive the sounding reference signal transmitted by the terminal, and obtain the method. All the user location information of the pico RRU is reported to the positioning system; the positioning system displays the flow distribution and the passenger flow of the entire venue at various moments, targeted push advertisements, and adjusts the distribution of the venue stores.

For example, in the application scenario of navigating the underground garage to find a car, the specific steps include: after the user stops the car in the underground garage, the mobile phone APP is opened, and the QCELL system of the shopping mall adopts the positioning method of the terminal, and only one or one time interval is used. The radio frequency unit corresponding to the time interval of the plurality of radio frequency units is configured to receive the sounding reference signal transmitted by the terminal, to obtain a specific location of the user, and the positioning system sends the user location to the mobile phone APP, and the APP records the location information P1, and the user completes After shopping, the mobile phone APP is opened, and the QCELL system of the shopping mall adopts the above-mentioned terminal positioning method in the embodiment to obtain the location of the terminal, and the positioning system sends the user location to the mobile phone APP, starting from this position, P1 is the end point, and starting to navigate the car. During the navigation process, the QCELL system periodically (in units of seconds) adopts the method of the present invention to acquire the location of the user and update the navigation path.

For example, in an application scenario in which a person's precise location is located in real time, it is used to find people and other needs. Specifically, the method includes the following steps: the mall receives the request for searching, inputs the user's mobile phone number in the positioning system, and sends the positioning request to the QCELL system. The QCELL system adopts the above terminal positioning method in the embodiment, and only one or one time interval is used. The radio frequency unit corresponding to the time interval of the plurality of radio frequency units is configured to receive the sounding reference signal transmitted by the terminal to obtain a specific location of the user; the QCELL returns the specific location of the user to the positioning system, and the mall finds the user according to the location information.

Optionally, in this embodiment, in the foregoing application scenario, the indication information is sent to a terminal in a predetermined cell that has one or more radio frequency units, where the indication information indicates that the terminal is in an LTE time slot. The sounding reference signals are transmitted in one or more time intervals, and each time interval corresponds to one of the radio frequency units, and only one of the one or more radio frequency units corresponding to the time interval is set to Receiving the sounding reference signal transmitted by the terminal; acquiring a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals; and searching for the one or more radio frequency units corresponding to the target time interval The target radio unit, and determine that the current location of the terminal is within the signal coverage of the target radio unit. In other words, the present invention identifies a radio frequency unit in which the terminal is covered by a time-staggered method by corresponding one or more time intervals in the LTE time slot with one or more radio frequency units, instead of only roughly positioning. The terminal is located in a cell composed of a plurality of radio frequency unit coverage areas, and solves the problem in the related art that, in the merged state of the QCELL cell, the positioning of the terminal is performed in units of the combined cell coverage, resulting in low positioning accuracy. The problem, in turn, improves the accuracy of positioning the terminal.

Optionally, in this embodiment, the number of terminals involved includes, but is not limited to, one, wherein when there are multiple terminals, the multiple terminals may be simultaneously in one of one LTE time slots or Transmitting a sounding reference signal in a plurality of time intervals, wherein the sounding reference signal carries an identifier of the terminal, and then respectively acquires a target time interval of the sounding reference signal transmitted by the terminal received in the one or more time intervals and acquires The terminal to which the target time interval belongs, thereby achieving precise positioning of multiple terminals at the same time, thereby improving user experience.

It should be noted that the foregoing time interval includes, but is not limited to, an LTE time slot of 0.5 ms, and is divided into six or seven symbols, wherein different symbol time positions correspond to different time intervals.

Optionally, in this embodiment, the manner of sending the indication information to the terminal in the predetermined cell where the one or more radio frequency units are located includes, but is not limited to, broadcasting to one or more radio frequency units. The terminal in the predetermined cell sends the indication information; the indication information is sent to the terminal in the predetermined cell in which one or more radio frequency units are provided in a unicast manner.

Optionally, in this embodiment, searching for the target radio frequency unit corresponding to the target time interval in the one or more radio frequency units includes, but is not limited to, according to a time interval between the one or more radio frequency units and the target time interval. The mapping relationship is performed to find a target radio unit, where the mapping relationship can be obtained according to a preset algorithm.

With this embodiment, one or more time intervals in the LTE time slot are corresponding to one or more radio frequency units, and the time-staggered method is used to identify which radio frequency unit is covered by the terminal, and the 4G network cannot be changed. The status quo of indoor positioning has achieved the effect of achieving indoor meter-level positioning accuracy based on QCELL network.

In an optional implementation manner, before sending the indication information to the terminal in the predetermined cell where the one or more radio frequency units are provided, the method further includes the following steps:

Step S11, transmitting, to the convergence unit, a mapping relationship between one or more time intervals and one or more transmission channels for receiving the sounding reference signal, wherein only one transmission channel is opened in each time interval, and the aggregation unit passes through one Or a plurality of transmission channels are connected to the radio unit.

Optionally, in this embodiment, by setting only one transmission channel that receives the sounding reference signal, that is, the time interval and the transmission channel corresponding to each time interval, thereby making the milliwatt power corresponding to the time interval far The sounding reference signal transmitted by the terminal in the range of the radio frequency unit pico RRU is received by the transmission channel.

In an optional implementation manner, after the mapping of the one or more time intervals to the one or more transmission channels for receiving the sounding reference signal is sent to the aggregation unit, the method further includes:

Step S21, sequentially controlling one of the one or more transmission channels to be turned on according to the mapping relationship, wherein only one of the transmission channels is opened at each of the time intervals, and at least one of the one or more transmission channels is turned off. A transmission channel outside the transmission channel.

Optionally, in this embodiment, only one transmission channel is opened at each time interval by means of polling, and at least one transmission channel other than the transmission channel opened in the one or more transmission channels is closed, further The sounding reference signal sent by the terminal in the pico RRU coverage range of the far-end radio unit corresponding to the milliwatt power corresponding to the time interval is received by the transmission channel to implement accurate positioning of the terminal.

In an optional implementation manner, sequentially controlling one of the one or more transmission channels according to the mapping relationship includes:

Step S31, starting with the time when the terminal starts transmitting the sounding reference signal, and sequentially controlling one of the one or more transmission channels to be turned on according to the mapping relationship.

It should be noted that the manner of obtaining the foregoing starting time includes, but is not limited to, the terminal notifying the time to the convergence unit as the starting time when starting to transmit the sounding reference signal.

Optionally, in this embodiment, one of the one or more transmission channels is sequentially turned on by setting a starting time, so that the aggregation unit controls the time when one of the one or more transmission channels is turned on. The terminal starts transmitting the sounding reference signal to achieve time synchronization, which further ensures the accuracy of the terminal positioning.

In an optional implementation manner, acquiring a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals includes:

Step S41, the time when the terminal starts transmitting the sounding reference signal is the starting time, and the following steps are repeatedly performed until the target time interval is obtained, wherein the current time interval is the first one of the one or more time intervals. time interval:

Step S42, detecting, at the current time interval, whether the sounding reference signal transmitted by the terminal is received through a transmission channel corresponding to the current time interval;

Step S43, if the sounding reference signal is received, the target time interval is obtained;

Step S44, if the sounding reference signal is not received, determining whether the current time interval is the last time interval of the one or more time intervals;

Step S45: If the current time interval is not the last time interval, the next time interval of the current time interval is used as the current time interval; if the current time interval is the last time interval, the first time is The interval is the current time interval.

For example, suppose that multiple time intervals are T1, T2, T3, T4, and T5, respectively, which correspond to pico RRU1, pico RRU2, pico RRU3, pico RRU4, pico RRU5, and assume that the terminal transmits a sounding reference signal at time T1, if the remote end The radio frequency unit can receive the sounding reference signal at time T1, and then use the time T1 as the target time interval; if not, detect whether the sounding reference signal transmitted by the terminal can be received at time T2, if the remote radio frequency unit can Receiving the sounding reference signal transmitted by the terminal at time T2, using T2 as the target time interval. If not, detecting whether the sounding reference signal transmitted by the terminal can be received at time T2, and so on, and finally according to the target time. The interval determines the pico RRU corresponding to the target time interval, thereby determining that the terminal is within the coverage of the pico RRU.

Through the above-mentioned loop, the target time interval is obtained, and the range of the terminal is accurately located, which further solves the problem that the positioning accuracy is achieved by locating the terminal in units of the combined cell coverage in the combined state of the QCELL cell in the related art. The low problem improves the accuracy of positioning the terminal.

The present embodiment will be exemplified below with reference to specific examples.

FIG. 3 is a reference diagram of a terminal positioning method according to an embodiment of the present invention. The present embodiment will be described in detail below with reference to FIG. 3. Multiple pico RRUs in a cell in a cell merge scenario In the case of a time-staggered method, it is identified in the picoRRU: the Building Baseband Unit (BBU) notifies the terminal UE to transmit a sounding reference signal (Sounding Reference Signal, referred to as SRS), at this interval, the aggregation unit pBridge only opens the channel of one pico RRU (such as pRRUn), and the channels of other pico RRUs are closed. If the indoor processing unit BBU receives the SRS signal of the UE, it indicates that the UE is under pRRUn.

Further, the positioning method in the merged state of the QCELL cell in this embodiment includes the following steps:

Step S51, the BBU specifies a time interval that can be used to send the SRS in the cell, and notifies the UE to periodically send the SRS in the time interval.

In step S52, the BBU and the pBridge synchronize the pico RRU to turn off the timing configuration.

Since the positioning measurement requires the BBU and pBridge to synchronously turn off a pico RRU at the symbol level (less than 0.25ms). Since the time of one symbol is less than 0.25 ms, if the pico RRU is notified by the BBU to send a message through the BBU in the communication system, the timing cannot satisfy the requirement. This embodiment proposes the following mechanism to solve the time synchronization problem between the BBU and the pBridge:

The BBU determines the following information:

1) the starting time of the positioning function;

2) Determine which pico RRU is turned off at a certain time interval.

These rules are notified to the pBridge before the measurement starts, and then the BBU and the pBridge are independently executed according to the rules at the same time point according to the rules, and cooperate with the positioning measurement.

In step S53, the pBridge only opens an uplink channel of a pico RRU (called pRRUn) at a certain SRS interval, and the other pico RRU uplink channels in the cell are closed.

In step S54, the BBU detects the UE uplink in the SRS time interval. If the SRS signal sent by the UE is received, it indicates that the UE is within the coverage of the pRRUn, and further location calculation is performed.

FIG. 4 is a flowchart (1) of a positioning method of a terminal according to an embodiment of the present invention. As shown in Figure 4, the following steps are included:

Step S61, the BBU 44 determines the pico RRU SRS switch slot configuration of the cell according to the number of pico RRUs 42 that are combined by the cell;

Step S62, the BBU 44 synchronizes the SRS switch slot configuration in step S61 to the pBridge 43;

Step S63, the BBU 44 notifies the UE 41 in the cell to send an SRS signal;

Step S64, the pBridge 43 closes or opens the pico RRU 42 in the designated time slot according to the configuration acquired in step S62;

In step S65, the BBU detects the SRS signal of the UE 41 and performs positioning measurement.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention in essence or the contribution to the related art can be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). The instructions include a number of instructions for causing a terminal device (which may be a cell phone, computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

Example 2

In this embodiment, a positioning device for the terminal is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 5 is a structural block diagram of a positioning apparatus of a terminal according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes the following modules:

1) The first sending module 52 is configured to send indication information to a terminal in a predetermined cell provided with one or more radio frequency units, wherein the indication information indicates one or more time intervals of the terminal in one LTE time slot. Transmitting a sounding reference signal, each of the time intervals corresponding to one of the radio frequency units, and setting, at a time interval, only the radio frequency unit corresponding to the time interval in the one or more radio frequency units to receive the detection transmitted by the terminal Reference signal

2) The obtaining module 54 is configured to acquire a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals;

3) The searching module 56 is configured to search for a target radio frequency unit corresponding to the target time interval in the one or more radio frequency units, and determine that the current location of the terminal is within a signal coverage range of the target radio frequency unit.

Optionally, in this embodiment, the application scenario of the positioning device of the terminal shown in FIG. 5 includes, but is not limited to, real-time positioning navigation and data analysis in the venue, navigation in the underground garage, and real-time positioning of a person in the room. Precise location.

Further, real-time field data analysis and statistics in the above-mentioned venues mainly include: 1) viewing the user's movement trajectory, performing property and security patrols. The specific steps include: the QCELL adopts the method of this embodiment, and only one or more radio frequency orders are used in one time interval. The radio frequency unit corresponding to the time interval is configured to receive the sounding reference signal transmitted by the terminal, and obtain all user location information of the pico RRU. The location information is reported to the positioning system, and the positioning system retains the location information, and the positioning system inputs the mobile phone number of the property security, and only displays the running track of the user of the mobile phone number. 2) Carry out the flow of people, statistical analysis of passenger flow, and adjust the venue shops. The specific steps include: the QCELL system adopts the method of the embodiment, and only the radio frequency unit corresponding to the time interval in one or more radio frequency units is set to receive the sounding reference signal transmitted by the terminal, and obtain the method. All the user location information of the pico RRU is reported to the positioning system; the positioning system displays the flow distribution and the passenger flow of the entire venue at various moments, targeted push advertisements, and adjusts the distribution of the venue stores.

Optionally, in this embodiment, in the foregoing application scenario, the indication information is sent to a terminal in a predetermined cell that has one or more radio frequency units, where the indication information indicates that the terminal is in an LTE time slot. Transmitting sounding reference signals in one or more time intervals, each time interval corresponding to one of the radio frequency units, and only one or more of the one time interval The radio frequency unit corresponding to the time interval in the radio frequency unit is configured to receive the sounding reference signal transmitted by the terminal; acquire a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals; A target radio frequency unit corresponding to the target time interval in one or more radio frequency units, and determining that the current location of the terminal is within a signal coverage range of the target radio frequency unit. In other words, the present invention identifies a radio frequency unit in which the terminal is covered by a time-staggered method by corresponding one or more time intervals in the LTE time slot with one or more radio frequency units, instead of only roughly positioning. The terminal is located in a cell composed of a plurality of radio frequency unit coverage areas, and solves the problem in the related art that, in the merged state of the QCELL cell, the positioning of the terminal is performed in units of the combined cell coverage, resulting in low positioning accuracy, thereby improving the problem. The accuracy of positioning the terminal.

Optionally, in this embodiment, the number of terminals involved in the apparatus shown in FIG. 5 includes, but is not limited to, one, wherein when multiple terminals exist, the multiple terminals may be simultaneously in one LTE. Transmitting a sounding reference signal in one or more time intervals in the time slot, wherein the sounding reference signal carries an identifier of the terminal, and then respectively acquires the sounding reference signal transmitted by the terminal received in the one or more time intervals The target time interval and the obtained terminal to which the target time interval belongs, thereby achieving accurate positioning of multiple terminals at the same time, thereby improving user experience.

It should be noted that the time interval involved in the application shown in FIG. 5 is included in the embodiment, but is not limited to: one LTE time slot 0.5 ms, and is divided into six or seven symbols, wherein different The symbol time positions correspond to different time intervals.

Optionally, in this embodiment, the manner in which the first sending module 52 involved in FIG. 5 sends the indication information to the terminal in the predetermined cell where the one or more radio frequency units are located includes, but is not limited to, broadcasting. The method sends indication information to a terminal in a predetermined cell in which one or more radio frequency units are provided; and transmits the indication information to a terminal in a predetermined cell in which one or more radio frequency units are provided in a unicast manner.

Optionally, in this embodiment, the method for the searching module 56 in FIG. 5 to search for the target radio frequency unit corresponding to the target time interval in the one or more radio frequency units includes, but is not limited to: according to one or a mapping relationship between a plurality of radio frequency units and a target time interval, The target radio unit is searched, wherein the mapping relationship can be obtained according to a preset algorithm.

In summary, with the present embodiment, one or more time intervals in the LTE time slot are corresponding to one or more radio frequency units, and the time-staggered method is used to identify which radio frequency unit covers the range in which the terminal has changed 4G. The network can not do the status quo of indoor positioning, and achieves the effect of achieving indoor meter-level positioning accuracy based on QCELL network.

In an alternative embodiment, a structural block diagram of the positioning device of the terminal as shown in FIG. 6 is also provided. As shown in FIG. 6, the device includes, in addition to all the modules involved in FIG. 5, the following:

1) The second sending module 62 is configured to send the one or more time intervals to the convergence unit and to receive the sounding reference signal before transmitting the indication information to the terminal in the predetermined cell in which the one or more radio frequency units are provided. A mapping relationship of one or more transmission channels, wherein only one of the transmission channels is opened at each of the time intervals, and the aggregation unit is connected to the radio frequency unit through the one or more transmission channels.

Optionally, in this embodiment, the foregoing second sending module 62 may be configured to set only a transmission channel that receives the sounding reference signal, that is, a time interval and a transmission channel corresponding to each time interval, thereby making the time interval The sounding reference signal transmitted by the terminal within the pico RRU coverage of the remote radio unit corresponding to the milliwatt power is received by the transmission channel.

In an alternative embodiment, a structural block diagram of the positioning device of the terminal as shown in FIG. 7 is also provided. As shown in FIG. 7, the device includes, in addition to all the modules involved in FIG. 6, a device:

1) The control module 72 is configured to, after transmitting the mapping relationship between the one or more time intervals and one or more transmission channels for receiving the sounding reference signal, to the aggregation unit, sequentially control the one or more according to the mapping relationship One of the transmission channels is turned on, wherein only one of the transmission channels is turned on at each of the time intervals, and the transmission channels other than the transmission channels of the one or more transmission channels are turned off.

Optionally, in this embodiment, the foregoing control module 72 may be configured to perform only one transmission channel at each time interval by polling, and simultaneously close one or more transmission channels. a transmission channel other than the transmission channel of the channel, and further, the sounding reference signal sent by the terminal in the pico RRU coverage of the remote radio unit corresponding to the milliwatt power corresponding to the time interval is received by the transmission channel, and the terminal is implemented. Precise positioning.

In an optional implementation manner, the control module 72 involved in FIG. 7 is further configured to start, according to the mapping relationship, the one or more transmission channels according to the mapping relationship, when the terminal starts transmitting the sounding reference signal as a starting time. One of the transmission channels is turned on.

In an optional implementation manner, the acquiring module 54 involved in FIG. 5 may acquire, by using the following steps, a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals: The time at which the sounding reference signal is started to be transmitted is the starting time, and the following steps are repeatedly performed until the target time interval is obtained, wherein the current time interval is the first time interval of the one or more time intervals: at the current time The time interval is detected whether the sounding reference signal transmitted by the terminal is received through a transmission channel corresponding to the current time interval; if the sounding reference signal is received, the target time interval is acquired; if the sounding reference signal is not received, Determining whether the current time interval is the last time interval of the one or more time intervals; if the current time interval is not the last time interval, using the next time interval of the current time interval as the current time interval If the current time interval is the last time interval, the first time Examples of the current interval time interval.

The specific steps of the acquisition module 54 acquiring the target time interval of receiving the sounding reference signal transmitted by the terminal in one or more time intervals are exemplified below with reference to specific examples.

For example, suppose that multiple time intervals are T1, T2, T3, T4, and T5, respectively, which correspond to pico RRU1, pico RRU2, pico RRU3, pico RRU4, pico RRU5, and assume that the terminal transmits a sounding reference signal at time T1, if the remote end The RF unit can receive the probe at time T1. Measuring the reference signal, the T1 time is taken as the target time interval; if not, detecting whether the sounding reference signal transmitted by the terminal can be received at time T2, if the remote radio frequency unit can receive the When the reference signal is detected, T2 is used as the target time interval. If not, it is detected at time T2 whether the sounding reference signal transmitted by the terminal can be received, and so on, and finally the pico corresponding to the target time interval is determined according to the target time interval. The RRU, in turn, determines that the terminal is within range of the pico RRU coverage.

Further, the foregoing time interval is obtained, and the target time interval is obtained, and the range of the terminal is accurately located, which further solves the problem that the terminal is located in the combined state of the cell coverage in the QCELL cell merge state in the related art. The problem of low positioning accuracy improves the accuracy of positioning the terminal.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

Example 3

Embodiments of the present invention also provide a storage medium. For the application scenario and examples of the embodiment, refer to Embodiment 1 and Embodiment 2, and details are not described herein. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1. Send indication information to a terminal in a predetermined cell that has one or more radio frequency units, where the indication information indicates that the terminal transmits sounding reference signals in one or more time intervals in one LTE time slot, each The time interval corresponds to one radio frequency unit, and the radio frequency unit corresponding to the time interval in the one or more radio frequency units is set to receive the sounding reference signal transmitted by the terminal.

S2. Acquire a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals.

S3. Search for a target radio frequency unit corresponding to the target time interval in the one or more radio frequency units, and determine that the current location of the terminal is within a signal coverage range of the target radio frequency unit.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in this embodiment, the processor performs the above steps S1, S2 according to the stored program code in the storage medium.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

In the embodiment of the present invention, by corresponding to one or more radio frequency units in one or more time intervals in the LTE time slot, the time-staggered method is used to identify which radio frequency unit the terminal covers, instead of only The problem that the positioning terminal is located in a cell composed of a plurality of radio frequency units can solve the problem that the positioning accuracy of the terminal is low in the combined state of the cell coverage in the QCELL cell merge state in the related art, and the positioning accuracy is low. increased The accuracy of positioning the terminal.

Claims

A terminal positioning method includes:

Transmitting indication information to a terminal in a predetermined cell in which one or more radio frequency units are instructed, wherein the indication information instructs the terminal to transmit sounding reference signals in one or more time intervals in one LTE time slot, each The time interval corresponds to one of the radio frequency units, and only one radio frequency unit corresponding to the time interval in the one or more radio frequency units is set to receive the sounding reference signal transmitted by the terminal in one time interval. ;

Obtaining a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals;

Finding a target radio frequency unit corresponding to the target time interval in the one or more radio frequency units, and determining that the current location of the terminal is within a signal coverage range of the target radio frequency unit.
The method according to claim 1, wherein before transmitting the indication information to the terminal in the predetermined cell in which the one or more radio frequency units are provided, the method further includes:

Transmitting, to the aggregation unit, a mapping relationship between the one or more time intervals and one or more transmission channels for receiving the sounding reference signal, wherein only one of the transmission channels is turned on in each of the time intervals, The aggregation unit is connected to the radio frequency unit through the one or more transmission channels.
The method of claim 2, after the mapping of the one or more time intervals to the one or more transmission channels for receiving the sounding reference signal to the aggregation unit, further comprising:

And sequentially controlling one of the one or more transmission channels to be turned on according to the mapping relationship, wherein only one of the transmission channels is opened at each of the time intervals, and the one or more transmission channels are simultaneously closed In addition to the open transmission channel Transmission channel.
The method of claim 3, wherein the sequentially controlling one of the one or more transmission channels to be activated according to the mapping relationship comprises:

The time at which the terminal starts transmitting the sounding reference signal is a starting time, and one of the one or more transmission channels is sequentially turned on according to the mapping relationship.
The method of claim 2, wherein the obtaining a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals comprises:

Determining, by the terminal, the time at which the terminal starts transmitting the sounding reference signal as a starting time, until the target time interval is obtained, wherein the current time interval is the first one of the one or more time intervals Intervals:

Detecting, at the current time interval, whether the sounding reference signal transmitted by the terminal is received through a transmission channel corresponding to the current time interval;

Obtaining the target time interval if the sounding reference signal is received;

If the sounding reference signal is not received, determining whether the current time interval is the last time interval of the one or more time intervals;

If the current time interval is not the last time interval, the next time interval of the current time interval is used as the current time interval; if the current time interval is the last time interval, the The first time interval is taken as the current time interval.
A positioning device for a terminal, the device comprising:

a first sending module, configured to be in a predetermined cell with one or more radio frequency units The terminal sends indication information, wherein the indication information indicates that the terminal transmits sounding reference signals in one or more time intervals in one LTE time slot, each of the time intervals corresponding to one of the radio frequency units, in one And setting, in the time interval, only the radio frequency unit corresponding to the time interval in the one or more radio frequency units to receive the sounding reference signal transmitted by the terminal;

An acquiring module, configured to acquire a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals;

And a search module, configured to search for a target radio frequency unit corresponding to the target time interval in the one or more radio frequency units, and determine that the current location of the terminal is within a signal coverage range of the target radio frequency unit.
The apparatus of claim 6 wherein said apparatus further comprises:

a second sending module, configured to send the one or more time intervals to the convergence unit and to receive the sounding reference signal before transmitting the indication information to the terminal in the predetermined cell in which the one or more radio frequency units are provided A mapping relationship of one or more transmission channels, wherein only one of the transmission channels is opened at each of the time intervals, and the aggregation unit is connected to the radio frequency unit through the one or more transmission channels.
The apparatus of claim 7 wherein said apparatus further comprises:

a control module, configured to sequentially control the one or more according to the mapping relationship after transmitting the mapping relationship between the one or more time intervals and one or more transmission channels for receiving the sounding reference signal to the aggregation unit One of the plurality of transmission channels is open, wherein only one of the transmission channels is opened at each of the time intervals, and a transmission channel other than the transmission channel of the one or more transmission channels is turned off .
The apparatus of claim 8 wherein said control module is further configured to The time at which the terminal starts transmitting the sounding reference signal is a starting time, and one of the one or more transmission channels is sequentially turned on according to the mapping relationship.
The apparatus according to claim 7, wherein the acquisition module acquires a target time interval of receiving the sounding reference signal transmitted by the terminal in the one or more time intervals by:

Determining, by the terminal, the time at which the terminal starts transmitting the sounding reference signal as a starting time, until the target time interval is obtained, wherein the current time interval is the first one of the one or more time intervals Intervals:

Detecting, at the current time interval, whether the sounding reference signal transmitted by the terminal is received through a transmission channel corresponding to the current time interval;

Obtaining the target time interval if the sounding reference signal is received;

If the sounding reference signal is not received, determining whether the current time interval is the last time interval of the one or more time intervals;

If the current time interval is not the last time interval, the next time interval of the current time interval is used as the current time interval; if the current time interval is the last time interval, the The first time interval is taken as the current time interval.