CN116233863A - Base station deployment method and device for high-precision positioning terminal - Google Patents

Abstract

The application relates to the technical field of communication, solves the problems that the existing positioning/sensing precision/deployment speed is not ideal enough and is easily influenced by some factors, and discloses a base station deployment method and device for a high-precision positioning terminal. Multiple mobile points of the second device are matched with multiple first devices, and more data samples are obtained by utilizing positioning technologies such as AOA, TOA and the like through beam scanning; quasi, i.e. context aware, RSRP/RSRPP etc.; the method is fast, namely, the user equipment is replaced by the original base station anchor point by utilizing the side link communication technology and is used as a sampling point basis, so that the fast station building position planning can be realized.

Description

Base station deployment method and device for high-precision positioning terminal

Technical Field

The application relates to the technical field of communication, in particular to a base station deployment method and device for a high-precision positioning terminal.

Background

The 5th generation mobile communication system (5th generation mobile communication system;5G) mainly includes 2 major functions: data communications and User Equipment (UE) location determination (positioning). Among the positioning techniques, part of the positioning techniques may need to rely on data communication techniques (e.g., UE reports its own measured positioning related information to the core network, such as reference signal time difference, reference Signal Time Difference, RSTD).

In other positioning techniques, the UE may need to measure its own Angle (e.g., angle of Arrival, aoA; angle of departure, angle of Departure, aoD) and radio wave propagation Time (Time of Arrival, toA) with respect to the base station. From the angle and the propagation time, the UE (or the core network) can determine the location of the UE.

In some sensing (positioning) techniques, the UE may not send data nor transmit signals but rather reflect radio waves (including smart reflective surfaces, reconfigurable Intelligence Surface, RIS). At this time, the signal receiving end needs more complex processing techniques, such as secondary angle estimation, interference cancellation, and the like.

In network deployment, it is desirable to simulate the possible performance (e.g., coverage, capacity, blocking, etc.) of the network after the base station is placed. This requires a certain simulation method to predict how to deploy the base station.

In real life, the existence probability of NLOS (non-direct view, none line of sight, NLOS) channel transmission may be larger than the probability of LOS (line of sight) channel transmission signal, such as in indoor factories, the placement of various devices often lies between workers and pRRU (micro remote radio unit/pico remote radio unit, pico Remote Radio Unit), so that occlusion is generated to cause signal transmission as NLOS channel transmission. If the NLOS channel acquisition parameters are regarded as LOS channel parameters in positioning, some errors are often introduced, and some LOS and NLOS distinguishing techniques are needed.

The existing positioning/sensing precision/deployment speed is not ideal enough and is easily influenced by factors, for example, in a positioning method adopting time difference of arrival (Time Difference of Arrival, TDOA), synchronization among different base stations has great influence on positioning error performance, so that positioning performance is influenced, secondly, corresponding environment reconstruction in the prior art is generally realized by adopting a method such as a laser radar, and the like.

Disclosure of Invention

The base station deployment method and device for the high-precision positioning terminal aim to solve the problems that positioning/sensing precision/deployment speed in the prior art is not ideal enough and is easily influenced by some factors.

In a first aspect, a base station deployment method for a high-precision positioning terminal is provided, including:

s100, deploying one or more first devices and/or at least one second device in a deployment area, wherein the first devices are base stations or user equipment;

S200, moving the second equipment in the deployment area, wherein the second equipment performs one-time beam scanning at each moving point in the moving process, and the first equipment performs one-time beam scanning at the same time of the beam scanning of the second equipment, and the second equipment is user equipment;

s300, acquiring channel related information measured by a second device under different beam combinations based on a side link communication technology, wherein the channel related information comprises RSRP and RSRPP;

s400, modeling the shielding situation of the scatterers at the intersection point according to the corresponding intersection point positions of the beam combinations and the corresponding channel related information so as to obtain the shielding situation of the scatterers corresponding to all the movement point positions of the second equipment and all the deployment positions of the first equipment;

s500, selecting a base station deployment position based on a scattering body shielding condition;

s600, adjusting the deployment position of the first equipment, and repeatedly executing the steps S200-S500 until a required base station deployment position is selected;

and the message transmission is carried out between the first devices and the second devices by adopting a one-way ranging method so as to realize time synchronization between the first devices and the second devices.

Further, the number of the second devices is one or more, and selecting the base station deployment location based on the scattering body shielding condition includes:

selecting anchor point positions corresponding to the second equipment at different moments and different positions to form an anchor point position set;

and taking the anchor point position set as a base station deployment position.

Optionally, selecting the anchor point position includes:

transmitting a positioning request signal to the first equipment through the second equipment needing positioning;

the first equipment receiving the positioning request signal feeds back side-path positioning reference signals;

and the second equipment performs measurement and judgment according to the received side-road positioning reference signal, and performs positioning measurement calculation to obtain the anchor point position.

Optionally, selecting the anchor point position includes:

transmitting a positioning request signal to the first equipment through the second equipment needing positioning;

the first equipment receiving the positioning request signal performs measurement judgment according to the positioning request signal;

the first equipment which is considered to be capable of being used as an anchor point feeds back a side path positioning reference signal through measurement and judgment;

and the second equipment performs positioning measurement calculation to select anchor point positions according to the received side road positioning reference signals.

Optionally, selecting the anchor point position includes:

Transmitting a positioning request signal to the first equipment through the second equipment needing positioning;

the first equipment receiving the positioning request signal judges through measurement and feeds back feedback information;

and the second equipment selects the first equipment sets with the required number as anchor point sets according to the received feedback information signaling to perform positioning measurement and calculate the anchor point position.

Optionally, selecting the anchor point position includes:

transmitting a positioning request signal to the first equipment through the second equipment needing positioning;

the first equipment receiving the positioning request signal performs measurement judgment according to the positioning request signal;

feedback information is fed back to the first equipment which is considered to be capable of being used as an anchor point through measurement and judgment;

and the second equipment selects the first equipment sets with the required number as anchor point sets according to the received feedback information signaling to perform positioning measurement and calculate the anchor point position.

Further, the measurement judgment includes:

acquiring related information of surrounding first equipment according to a sensing mechanism of second equipment, judging whether the information is LOS path/NLOS path, selecting an anchor point suitable for the second equipment according to a judging result, or

Acquiring related information of the second equipment and nearby first equipment through measurement of the base station, and recommending n anchor point equipment sets or lists as anchor points of the second equipment according to the related information, or

Acquiring related information of surrounding first equipment through a sensing process between second equipment and the first equipment, judging whether the information is LOS (LOSs of control) path/NLOS (non-line of control) path, and selecting an anchor point suitable for serving as the second equipment according to a judging result;

wherein the related information is a preferred set, a non-preferred set or a reuse physical side link shared channel set;

determining whether it is an LOS path/NLOS path includes: obtaining the arrival time difference of the head path and other extra paths relative to the head path and the received power of all paths according to the received signals, and if the power of the head path is the strongest power of all paths, calculating the difference between the power of the head path and the average power of all paths;

if the difference value is larger than a preset threshold value, the channel transmitted by the signal is considered to be an LOS channel, and the first path is the LOS path in the corresponding LOS channel;

if the difference is smaller than or equal to the preset threshold, the channel transmitted by the signal is considered as an NLOS channel, and the first path is the NLOS path in the corresponding NLOS channel.

Further, when time synchronization between the first devices and between the first device and the second device is achieved, all the first devices and the second devices in the designated area are time synchronized according to the area ID in the signaling, or

Updating the synchronization source of different zone IDs to the synchronization source of other first devices according to the zone ID in the signaling, or

One or more of the first devices forward the sidestream synchronization signal block, update the synchronization sources of the remaining first devices, or

The second device forwards the side line synchronization signal block as the synchronization source of the first device, or

Time synchronization by a one-sided loop-back time method, or

Time synchronization using a double-sided loop-back time method, or

Time synchronization is performed using unicast, bi-cast or multicast.

In one possible implementation manner, when the first device and the second device need to send the side chain positioning reference signal and the physical side-going shared channel simultaneously or send one simultaneously, it is determined whether the indicator of the 1bit signaling side chain positioning reference signal transmitting port is 1 or 0;

if the judgment result is 1, the side chain positioning reference signal and the physical side line sharing channel are transmitted simultaneously or received simultaneously, and the power is distributed according to the priorities of the side chain positioning reference signal and the physical side line sharing channel;

if the signal is judged to be 0, the side chain positioning reference signal and the physical side line sharing channel cannot be simultaneously transmitted or received and transmitted, and the sequence of the transmission or the reception of the side chain positioning reference signal and the physical side line sharing channel is determined according to the priority of the side chain positioning reference signal and the physical side line sharing channel.

In a second aspect, there is provided a base station deployment apparatus for a high-precision positioning terminal, including:

the first equipment deployment module is used for deploying one or more first equipment and/or at least one second equipment in a deployment area, wherein the first equipment is a base station or user equipment;

the second equipment deployment module is used for moving in the deployment area by using the second equipment, and in the moving process, the second equipment performs one-time beam scanning at each moving point, wherein the first equipment performs one-time beam scanning at the same time of the beam scanning of the second equipment, and the second equipment is user equipment;

the acquisition module is used for acquiring channel related information measured by the second equipment under different beam combinations based on a side link communication technology, wherein the channel related information comprises RSRP and RSRPP;

the modeling module is used for modeling the shielding situation of the scatterers at the intersection point according to the corresponding intersection point positions of the beam combinations and the corresponding channel related information so as to obtain the shielding situation of the scatterers corresponding to all the movement point positions of the second equipment and all the deployment positions of the first equipment;

the base station deployment module is used for selecting a base station deployment position based on the shielding condition of the scatterer;

The optimizing module is used for adjusting the deployment position of the first equipment and calling the second equipment deployment module, the acquiring module, the modeling module and the base station deployment module until the required base station deployment position is selected;

and the message transmission is carried out between the first devices and the second devices by adopting a one-way ranging method so as to realize time synchronization between the first devices and the second devices.

The application has the following beneficial effects: the method can combine environmental perception in general sense through multiple positioning methods such as AOA, TOA and the like, and simultaneously position and construct a map, so as to achieve multidimensional mass data acquisition and realize: multiple mobile points of the second device are matched with multiple first devices, and more data samples are obtained by utilizing positioning technologies such as AOA, TOA and the like through beam scanning; quasi, i.e. context aware, RSRP/RSRPP etc.; the method is fast, namely, the User Equipment (UE) is replaced by the original Base Station (BS) anchor point by utilizing the side link communication technology (SL) and is used as a sampling point basis, so that the fast site building position planning can be realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application.

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flowchart of a base station deployment method for a high-precision positioning terminal according to an embodiment of the present application;

fig. 2 is a schematic diagram of a UE moving on a road of an indoor factory in a base station deployment method for a high-precision positioning terminal according to an embodiment of the present application;

fig. 3 is a schematic diagram of wired synchronization in a base station deployment method for a high-precision positioning terminal according to the first embodiment of the present application;

fig. 4 is a schematic diagram of wireless synchronization in a base station deployment method for a high-precision positioning terminal according to the first embodiment of the present application;

fig. 5 is a schematic diagram of synchronization source update between a target UE and an anchor point in a base station deployment method for a high-precision positioning terminal according to an embodiment of the present application;

fig. 6 is a block diagram of a base station deployment apparatus for a high-precision positioning terminal according to a second embodiment of the present application.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

A base station deployment method for a high-precision positioning terminal according to a first embodiment of the present application includes: s100, deploying one or more first devices and/or at least one second device in a deployment area, wherein the first devices are base stations or user equipment; s200, moving the second equipment in the deployment area, wherein the second equipment performs one-time beam scanning at each moving point in the moving process, and the first equipment performs one-time beam scanning at the same time of the beam scanning of the second equipment, and the second equipment is user equipment; s300, acquiring channel related information measured by a second device under different beam combinations based on a side link communication technology, wherein the channel related information comprises RSRP and RSRPP; s400, modeling the shielding situation of the scatterers at the intersection point according to the corresponding intersection point positions of the beam combinations and the corresponding channel related information so as to obtain the shielding situation of the scatterers corresponding to all the movement point positions of the second equipment and all the deployment positions of the first equipment; s500, selecting a base station deployment position based on a scattering body shielding condition; s600, adjusting the deployment position of the first equipment, and repeatedly executing the steps S200-S500 until a required base station deployment position is selected; the method can combine sense of environment through multiple positioning methods such as AOA, TOA and the like, and simultaneously realize positioning and map construction, thereby achieving multidimensional mass data acquisition and realizing: multiple mobile points of the second device are matched with multiple first devices, and more data samples are obtained by utilizing positioning technologies such as AOA, TOA and the like through beam scanning; quasi, i.e. context aware, RSRP/RSRPP etc.; the method is fast, namely, the User Equipment (UE) is replaced by the original Base Station (BS) anchor point by utilizing the side link communication technology (SL) and is used as a sampling point basis, so that the fast site building position planning can be realized.

For positioning technology in an sidelink SL communication (Sidelink communication) or a direct communication system, positioning reference signals (PRS, positioning reference signal) need to be transmitted between devices, and the reference signals are directly transmitted by a first device to a second device without being forwarded by other network devices, where in this application, the SL communication refers to all direct communications, and the sidelink communication technology (SL) includes all positioning technologies based on direct communications, where the first device generally refers to a reference anchor point, and may be a BS (i.e., a base station), a UE (i.e., a user equipment), or a pRRU (i.e., an indoor base station), and the second device is generally a target device that needs to be positioned.

Currently, for a positioning technology of an anchor point device (first device), angle information of a target device can be obtained by using an AOA or AOD positioning method, distance information from the anchor point device (usually referred to as a first device) to the target device (usually referred to as a second device) can be obtained by using a Round Trip Time (RTT) method (or TOA), where the distance is equal to a product of a measurement time and a speed of light, so that position information of the target device relative to the anchor point device can be obtained by using the anchor point device.

The positioning technology of the anchor point devices can adopt positioning methods such as TDOA (time difference of arrival) or multi-round RTT (round trip time), wherein the TDOA positioning is a method for positioning by utilizing time difference, the distance of a signal source can be determined by measuring the time of arrival of the signal at monitoring stations, and the position of the signal can be determined by utilizing the distance (taking the monitoring stations as the center and the distance as the radius) of the signal source to each monitoring station; the principle of multi-round RTT is to determine the distance between the rest of UEs by using the round trip time from multiple base stations to the UEs, and then the position of the intersection point of the three circles is the UE position, but high time synchronization between the base station and the mobile phone (UE, user equipment) is required.

Adopting a miniature remote radio unit (pico radio remote unit, pRRU) alternative scheme, and realizing 3D scene test reconstruction by using SL technology, thereby realizing pRRU (indoor base station) position planning; the arrangement of anchor point UE (first equipment) can be used for preliminarily replacing the arrangement of pRRU, BS and the like, and the characteristics of relatively low cost and high station arrangement speed are realized. Of course, scene reconstruction can be directly performed based on pRRU/BS, and the scene reconstruction is similar in nature.

The method is characterized in that a 2D/3D scene test reconstruction thought is realized by using a SL technology, 2D is taken as an illustration, the AOD angle of a transmitting UE and the AOA angle of a receiving UE are adjusted, according to reflection characteristics (supposing that specular reflection is considered, the strongest reflection path except a direct path is adopted), the estimation of the position of a scattering body in the environment is realized by utilizing signal related information and the like of the receiving UE/BS/pRRU, after the position of the scattering body is obtained, a better site building position can be found according to the distribution of the scattering body in the environment, similarly, the thought can be equivalent to the A sending and A receiving condition adopting communication perception (general sense) to reconstruct the surrounding environment, the corresponding environment reconstruction in the prior art is realized by adopting a method such as a laser radar, the detected distance is drastically reduced relative to the scenes such as sunny days under the conditions of strong smoke and the like, in addition, for the application of a base station, the site is not completely suitable due to the fact that the site setting scenes are numerous, the environment is complex, the laser and the UE/BS/pRRU signal transmission difference is not completely suitable, and the planning of the environment has better planning and the planning of the site setting is better based on the existing equipment.

Specifically, fig. 1 shows a flowchart of a base station deployment method for a high-precision positioning terminal in the first application embodiment, including:

s100, one or more first devices and/or at least one second device are deployed in a deployment area, wherein the first devices are base stations or user equipment, specifically, the first devices are BS, UE or pRRU, and in addition, the deployment modes of the first devices can be all arranged in the deployment area or can be deployed only in possible positions;

s200, moving the second equipment in a deployment area, wherein the movement route of the second equipment can be random, and during the movement process, the second equipment (UE) performs beam scanning once at each movement point, wherein the first equipment (BS/UE/pRRU) performs beam scanning once at the same time of the beam scanning of the second equipment (UE), and the UE is user equipment;

s300, acquiring channel related information measured by a second device under different beam combinations based on an edge link communication technology, wherein the channel related information comprises RSRP and RSRPP, wherein RSRP English is totally called Reference Signal Received Power, namely reference signal received power; the RSRPP is named Reference Signal Received Path Power, namely the reference signal receiving path power, and the channel related information comprises information such as RSRP, RSRPP and the like;

S400, modeling the shielding situation of the scatterers at the intersection point according to the corresponding intersection point positions of the beam combinations and the corresponding channel related information so as to obtain the shielding situation of the scatterers corresponding to all the movement point positions of the second equipment and all the deployment positions of the first equipment;

s500, selecting a base station deployment position based on a scattering body shielding condition, wherein the base station deployment position can be selected according to the principles of minimum total shielding, coverage of all moving points, and the like, and the minimum BS/UE/pRRU planning position and the number are acquired;

s600, adjusting the deployment position of the first equipment, and repeatedly executing the steps S200-S500 until a required base station deployment position is selected;

and the message transmission is carried out between the first devices and the second devices by adopting a one-way ranging method so as to realize time synchronization between the first devices and the second devices.

After the method is adopted, the optimal deployment position of the base station can be better selected according to the measurement results (such as RSRP and RSRPP) of the deployment scheme combination of each base station.

As shown in fig. 2, in an example, a UE (second device) moves on a road of an indoor factory, for a certain anchor point, communication established between the UE (second device) and the UE is considered, at a certain moment, the corresponding UE is fixed on a position point a, the UE (second device) scans a beam through a beam, and meanwhile, the anchor point on a position point B also scans a beam, at least two position points (to-be-judged scatterer position points) can be found for two-side distribution of an AB two-point connection, and the two position points meet a specular reflection condition.

Further, based on the above example, in one example, the target UE (second device) sends, the anchor UE (first device) receives, at this time, the anchor UE (first device) determines whether the points of the positions of the scatterers to be determined have the scatterers according to the power of the reference signal sent by the target UE (second device) received by itself, if the received power is relatively large, the points are considered to have the scatterers, otherwise, the points are considered to have no scatterers.

Or further, based on the above example, in one example, the anchor UE sends, the target UE acts as the receiving UE, and at this time, the target UE determines, according to the power of the anchor UE sending the reference signal, whether the scatterer position points to be determined have the scatterer, if the received power is relatively large, the point is considered to have the scatterer, and if the received power is relatively small, the point is considered to have no scatterer.

When the optimal reference base station arrangement is found, the anchor point UE layout is utilized to replace the pRRU or BS position, so that the complexity of the base station layout can be reduced to a certain extent, and the time and financial cost can be reduced.

The trade-off between the number and the performance of the BS layout can be flexibly adjusted by reconstructing the position of the scatterer of the environment or the like or searching the optimal anchor point position by utilizing the LOS environment, and the information such as the station building position, the number and the like of the position can be rapidly planned according to the actual environment condition.

Example two

In the base station deployment method for the high-precision positioning terminal according to the second embodiment of the present application, an anchor point is selected based on a certain target UE position.

In one example, an anchor point (anchor) procedure is selected based on a target UE (target UE) location:

step1: a Target UE (Target UE) needing to be positioned sends a positioning request signal to candidate anchor point UE in a mode of collective broadcasting (or multicasting);

step2: all feedback side path positioning reference signal (sidelink positioning reference signal, SL-PRS) information of the UE receiving the request;

step3: the target UE performs relevant processes such as positioning measurement calculation and the like by measuring and judging RSRP/RSRPP/LOS (direct view), NLOS (non-LOS, non-direct view) and the like according to received side-road positioning reference signal signaling (sidelink positioning reference signal signaling, SL-PRSs);

in another example, based on a certain target UE (target UE) location, an anchor point (anchor) procedure is selected:

step1: the target UE sends a positioning request signal to the candidate anchor point in a mode of collective broadcasting (or multicasting);

step2: the UE which receives the request feeds back SL-PRS (side channel positioning reference signal) information when considering that the UE can be used as an anchor point according to the request signaling (RSRP/RSRPP/LOS, NLOS and the like; or, one more interaction: signaling can be multiplexed for double Side-RTT (double Side wireless transmission technology);

Step3, the target UE performs relevant processes such as positioning measurement calculation and the like according to the received SL-PRSs (side-road positioning reference signal signaling);

in yet another example, an anchor point (anchor) procedure is selected based on a target UE (target UE) location:

step1: the target UE sends a positioning request signal to the candidate anchor point in a mode of collective broadcasting (or multicasting);

step2: the UE receiving the request feeds back feedback information (including being capable of being sent as an anchor point and not directly sending PRS) through (measuring and judging RSRP/RSRPP/LOS, NLOS and the like);

step3: the target UE (user equipment) selects (randomly) UE id sets with the required number as anchor sets according to the received feedback information signaling to perform processes such as positioning measurement calculation, wherein the UE represents user equipment, the anchor represents an anchor point, and the sets represent sets;

in yet another example, an anchor point (anchor) procedure is selected based on a target UE (target UE) location:

step1: the target UE sends a positioning request signal to the candidate anchor point in a mode of collective broadcasting (or multicasting);

step2: the UE which receives the request feeds back feedback information when considering that the UE can be used as an anchor according to the request signaling (RSRP/RSRPP/LOS, NLOS and the like;

Step3: the Target (randomly) selects the UE id sets with the required number as the anchor sets to carry out processes such as positioning measurement calculation and the like according to the received feedback information signaling;

the measurement judgment includes:

acquiring related information of surrounding first equipment according to a sensing mechanism of second equipment, judging whether the information is LOS path/NLOS path, selecting an anchor point suitable for the second equipment according to a judging result, or

Acquiring related information of the second equipment and nearby first equipment through measurement of the base station, and recommending n anchor point equipment sets or lists as anchor points of the second equipment according to the related information, or

Acquiring related information of surrounding first equipment through a sensing process between second equipment and the first equipment, judging whether the information is LOS (LOSs of control) path/NLOS (non-line of control) path, and selecting an anchor point suitable for serving as the second equipment according to a judging result;

wherein the related information is a preferred set, a non-preferred set or a reuse physical side link shared channel set;

determining whether it is an LOS path/NLOS path includes: obtaining the arrival time difference of the head path and other extra paths relative to the head path and the received power of all paths according to the received signals, and if the power of the head path is the strongest power of all paths, calculating the difference between the power of the head path and the average power of all paths;

If the difference value is larger than a preset threshold value, the channel transmitted by the signal is considered to be an LOS channel, and the first path is the LOS path in the corresponding LOS channel;

if the difference is smaller than or equal to the preset threshold, the channel transmitted by the signal is considered as an NLOS channel, and the first path is the NLOS path in the corresponding NLOS channel.

Specifically, the measurement judgment process is as follows:

in one example, the measurement and judgment process may use a reuse pattern 2 sensing (mode 2 sensing) mechanism to obtain relevant information of surrounding UEs according to a target UE sensing (sensing), for example, whether the information is LOS path, RSRP, RSRPP size, etc., and through these information, it can be judged which UEs are suitable to be used as anchor points of the target UE.

In one example, in the mode 1 (mode 1) resource allocation type, the measurement judgment process may be specified by the gNB (the next Generation Node B, the next generation base station, i.e., the 5G base station) through (higher layer) signaling, obtain related information of the target UE (user equipment) and the nearby UE through measurement of the BS (base station), and recommend n candidate anchor UE sets/lists (target UE sets or target UE lists) as anchor points of the target UE according to the information.

In an example, the measurement judging process can reuse a cooperative UE related mechanism, and obtain related information of surrounding UEs through a sensing process of the cooperative UE, for example, judging whether the UE is in an LOS path, an RSRP or an RSRPP size, and the like, and through the information, which UEs are suitable to be used as anchor points of the target UE can be judged.

The related information may be Preferred set/list (Preferred set/list) or Non Preferred set/list (non-Preferred set/list) or set/list (reuse physical side link shared channel set/list) of the PSFCH.

In an example, when most UEs in the environment are LOS, at this time, the target UE or the cooperative UE searches for an anchor point, finds a UE unsuitable for being an anchor point, and feeds back only the UE of NLOS or RSRP/RSRPP below a preset threshold, which has higher efficiency than the UE suitable for being an anchor point of LOS.

The above procedure is based on a certain target UE position, and then expansion is performed, a plurality of target UE positions are equivalently expanded through the movement of one target UE, and the corresponding selected anchor point position set is the position of the final reference deployment base station, and can also be expanded to the simultaneous movement of a plurality of targets, so that the final recommended site building position is integrated.

In one example, the target UE moves, and can perform one-time positioning anchor point selection for a specific position at a certain moment, and when positioning is performed, multiple groups of anchor point sets can be set, and according to the set number requirement, a combination with better combination performance is selected for screening the anchor point sets corresponding to the candidate overall motion trail.

In another example, after the target UE moves, the point positions of the corresponding pRRU are obtained according to anchor point positions of different positions at different moments after the target UE moves, so that quick planning and construction are realized;

in another example, after a plurality of target UE moves, corresponding anchor point positions are obtained according to anchor point position sets of different target UE at different moments and different positions after the movement, so that rapid planning construction is realized;

the above scheme is verified through simulation, wherein a channel model in TR38.901 is used, 6/8/10/12 anchor points are selected for positioning respectively in indoor factories and indoor office scenes, when the number of available anchor points reaches a certain number, the positioning performance is basically stable, the positioning accuracy is relatively high, and through simulation of indoor factories and indoor office scenes, the fact that when a base station is planned, the number of base stations is increased under a certain performance and the positioning performance cannot be further improved can be seen, so that the scheme has important significance for planning the optimal BS positions and the BS number under the given performance.

Example III

Taking TDOA location (TDOA location is a method for locating by using a time difference, and the distance between the signal source and the monitoring station can be determined by measuring the time when the signal arrives at the monitoring station) as an example, since the existence of the NLOS path (non-straight-line-of-sight) generally results in a longer time period than the LOS path (straight-line-of-sight) during actual transmission, the time difference and the corresponding distance correspondingly obtained have larger deviation, and similarly, for AOA angle estimation, the arrival angle of the NLOS path and the arrival angle of the LOS path often have some difference, so that the angle reached by the actual LOS direction signal cannot be accurately obtained, and an angle estimation error is generated.

The obtained planning site also has larger errors by using the positioning method with larger errors, so that the base station deployment position cannot be accurately obtained, and finally the achievable precision or the network planning precision and the like may not be met.

In order to better solve the problem that the LOS cannot be accurately distributed due to the fact that the NLOS cannot be distinguished, a flow for realizing the LOS distinguishing and the NLOS is given below.

The main idea is that the first path and the strongest power path are separated according to the received signal; when the first path is the strongest power path and the power is larger than the average power of all paths, the first path, namely the strongest power path, can be considered as the LOS path in the corresponding LOS channel, and the receiving and transmitting node corresponding to the signal is utilized for positioning, so that the obtained positioning error is relatively smaller and more reliable; for the judgment of the NLOS channel, when the maximum path power is not different from the first path power according to the average power of all paths, it can be considered that there is no LOS path at this time, that is, the NLOS channel.

In an example, the receiving UE obtains the arrival time difference of the first path and other external diameters relative to the first path according to the received signal, and meanwhile, obtains the received power of each path, and by judging, the first path power is the strongest power path in all paths, and has a certain difference compared with the average power of all paths (i.e. the difference between the first path power and the average power of all paths is greater than a preset threshold), at this time, the channel transmitted by the reference signal can be considered as an LOS channel.

In yet another example, the receiving UE obtains, by receiving the reference signal, the arrival time differences of the first path and other additional outer diameters relative to the first path, and at the same time, the received power of each path, and by determining, when the difference between the first path power and the power strongest path among all paths, and the average power of all paths is not large (i.e., the difference between the first path power and the average power of all paths is less than or equal to a preset threshold), the channel transmitted by the reference signal may be considered as an NLOS channel.

After the method is used, the precision of the deployment position of the base station can be better improved.

Example IV

In order to better solve the problem of the base station deployment position precision, the target equipment is positioned by utilizing the anchor points by presetting the anchor points, and at the moment, the synchronization of the anchor points and the target equipment can be considered according to different positioning methods.

For example, the TDOA positioning method has high time synchronization requirements on the base stations, and when the target device is positioned, the synchronization error between the selected anchor base stations can cause the final positioning error of the target device.

In the TDOA positioning method, synchronization between different BSs (base stations) has a great influence on positioning error performance.

Aiming at the TDOA positioning algorithm, the synchronization problem is mainly solved by two methods in the ultra-wideband communication (ultra wideband communication, UWB) positioning technology, namely wire synchronization and wireless synchronization.

As shown in fig. 3, for wired synchronization, multiple BSs (base stations) are connected to the synchronization controller by means of wired connection, so that the connected base stations adopt the same clock source, and synchronization errors can be reduced well, but the synchronization controllers are expensive to implement in the system, and it is unavoidable that the target device is located at the edge positions of two synchronization control connection BSs, that is, BSs corresponding to the two synchronization controllers are still selected when an anchor point is selected, so that there is still a problem of small probability of asynchronization.

As shown in fig. 4, for wireless synchronization, a method of One-way ranging (OWR) is adopted in UWB (ultra wide band communication), and message passing is performed between anchor points, and through signaling exchange, time synchronization between anchor points can be achieved, that is, the time of the anchor points is synchronized with the time of starting the anchor points in response to the anchor points, and as a time reference, the target device can also estimate its position from the received data packets.

In the positioning process, based on more accurate synchronous information, the acquired positioning error and the final station distribution planning have important significance, and after the method is used, the base station deployment position accuracy can be better improved.

Example five

Aiming at SL-TDOA positioning (TDOA positioning is a method for positioning by utilizing time difference, the distance of a signal source can be determined by measuring the time of arrival of a signal at a monitoring station), the problem of anchor point synchronization is also a relatively important problem, and a UWB (ultra-wideband communication) wireless synchronization scheme can be introduced and used as a basis to further realize enhancement.

The one-way ranging is essentially the same as Single-side RTT (Single-sided round trip time, single-side loopback time), but double-side RTT (double-sided round trip time, double-side loopback time) can be better solved for errors caused by crystal oscillation.

The solution is as follows: the UE synchronizes source updates.

In one example, the UE synchronization source is updated, and all UEs in a certain area can be synchronized according to zone ID (area ID) in the existing signaling.

In one example, the synchronization source of the anchor UE is updated, and the synchronization source of different zone IDs may be updated to the synchronization source of other anchor UEs according to the zone ID (zone ID) in the existing signaling.

It should be noted that, the initiation of the wireless synchronization control may establish a synchronization relationship with other selected anchor points for the target UE or one or more initial anchor points.

In one example, one or more of the anchor UEs forwards the S-SSB (side line sync block sidelink Synchronization Signal block), updating the remaining anchor sync sources, as shown in fig. 5, and anchor 1 forwards the S-SSB (side line sync block).

In one example, the target UE forwards a synchronization signal S-SSB (sidelink synchronization signal block) as the synchronization source of the anchor point.

In an example, in the process of synchronizing an anchor point or an anchor point with a target UE, a Single-side RTT (Single-side loop time) scheme is adopted for synchronization, as shown in fig. 5, S-SSB (side synchronization signal block) is forwarded between anchor points for synchronization, and when a time difference is measured between anchor points for the target UE, a Single-side RTT (Single-side loop time) method is adopted for synchronization.

In an example, in the process of synchronizing an anchor point or an anchor point with a target UE, a double-side RTT (dual-side loop time) scheme is adopted for synchronization, S-SSB (side synchronization signal block) is forwarded between anchor points for synchronization, and when a time difference is measured between anchor points for the target UE, a double-side RTT (dual-side loop time) method is adopted for synchronization.

In one example, in the synchronization process between the anchor point or the anchor point and the target UE, unicast, broadcast or multicast may be used for synchronization, as shown in fig. 5, where the anchor point 1 is sent by unicast, broadcast or multicast when sending a signal.

In one example, in the synchronization process of the anchor point or the anchor point and the target UE, the implemented synchronization is used as a temporary synchronization source for the positioning process between the communication nodes.

After the method is used, the precision of the deployment position of the base station can be better improved.

Example six

The embodiment mainly relates to the aspects of UE capability reporting, signal channel priority comparison related flow, UE power control and the like.

Such as Dedicated/shared resource pool (independent resource pool or shared resource pool), whether multiple SL-PRS (sidelink positioning reference signal, side chain positioning reference signal) can be simultaneously transmitted, UE capability problem of SL-PRS and PSSCH (physical side shared channel, physical sidelink shared channel), and priority comparison flow and power control problem when simultaneously transmitted;

in the SL (side link) positioning, the transmission of the SL-PRS (side link positioning reference signal) may be based on an independent resource pool (dedicated resource pool) or may be based on a data sharing resource pool (shared resource pool) that is original to the SL. The independent resource pool and the data resource pool are separated on time-frequency domain resources, but are based on a BWP (partial Bandwidth), so that whether based on an independent resource window or a shared resource pool, the problem that SL-PRS (side chain positioning reference signal) is transmitted simultaneously with PSSCH (physical side shared channel) or transmitted and received (e.g. UE transmits SL-PRS while receiving PSSCH) may exist;

Aiming at the problem of simultaneous transmission:

at this time, it is necessary to indicate the UE capability, and whether the UE can simultaneously transmit the SL-PRS and the PSSCH may be explicitly indicated by a 1-bit signaling slplrs_tx_indicator (an indicator of a side chain positioning reference signal transmission port), for example, when the slplrs_tx_indicator is 1, the UE is considered to simultaneously transmit the SL-PRS and the PSSCH, and when the indication information is 0, the UE is considered to be unable to simultaneously transmit the SL-PRS and the PSSCH.

Further, when the SL-PRS and the PSSCH cannot be simultaneously transmitted, priority judgment is needed to decide whether to transmit the SL-PRS or the PSSCH.

Further, when the UE can simultaneously transmit the SL-PRS and the PSSCH, the power control problem needs to be considered, for example, the remaining power is allocated to the PSSCH after the power is preferentially allocated to the SL-PRS.

After the method is used, the problems of resource transmission conflict, transmission power and the like are flexibly adjusted, so that the transmission delay, interference and the like can be reduced to a certain extent, and a network (a base station and a core network) can know the processing capacity of the UE and the priority processing of the UE on signals/channels, thereby better processing the positioning reference signals.

Example seven

As shown in fig. 6, a base station deployment apparatus for a high-precision positioning terminal according to a seventh embodiment of the present application includes:

The first equipment deployment module is used for deploying one or more first equipment and/or at least one second equipment in a deployment area, wherein the first equipment is a base station or user equipment;

the second equipment deployment module is used for moving in the deployment area by using the second equipment, and in the moving process, the second equipment performs one-time beam scanning at each moving point, wherein the first equipment performs one-time beam scanning at the same time of the beam scanning of the second equipment, and the second equipment is user equipment;

the acquisition module is used for acquiring channel related information measured by the second equipment under different beam combinations based on a side link communication technology, wherein the channel related information comprises RSRP and RSRPP;

the modeling module is used for modeling the shielding situation of the scatterers at the intersection point according to the corresponding intersection point positions of the beam combinations and the corresponding channel related information so as to obtain the shielding situation of the scatterers corresponding to all the movement point positions of the second equipment and all the deployment positions of the first equipment;

the base station deployment module is used for selecting a base station deployment position based on the shielding condition of the scatterer;

the optimizing module is used for adjusting the deployment position of the first equipment, calling the second equipment deployment module, the acquisition module, the modeling module and the base station deployment module until the required base station deployment position is selected;

And the message transmission is carried out between the first devices and the second devices by adopting a one-way ranging method so as to realize time synchronization between the first devices and the second devices.

In one possible implementation manner, the number of the first devices is a plurality, the number of the second devices is one, and the base station deployment module is specifically configured to:

selecting anchor point positions corresponding to the second equipment at different moments and different positions to form an anchor point position set;

and taking the anchor point position set as a base station deployment position.

In another possible implementation manner, the number of the first devices and the second devices is multiple, and the base station deployment module is specifically configured to:

selecting anchor point positions corresponding to different second devices at different moments and different positions to form an anchor point position set;

and taking the anchor point position set as a base station deployment position.

The above is only a preferred embodiment of the present application; the scope of protection of the present application is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, shall cover the protection scope of the present application by making equivalent substitutions or alterations to the technical solution and the improved concepts thereof.

Claims (10)

1. The base station deployment method for the high-precision positioning terminal is characterized by comprising the following steps of:

s100, deploying one or more first devices and/or at least one second device in a deployment area, wherein the first devices are base stations or user equipment;

s200, moving the second equipment in the deployment area, wherein the second equipment performs one-time beam scanning at each moving point in the moving process, and the first equipment performs one-time beam scanning at the same time of the beam scanning of the second equipment, and the second equipment is user equipment;

s300, acquiring channel related information measured by a second device under different beam combinations based on a side link communication technology, wherein the channel related information comprises RSRP and RSRPP;

s400, modeling the shielding situation of the scatterers at the intersection point according to the corresponding intersection point positions of the beam combinations and the corresponding channel related information so as to obtain the shielding situation of the scatterers corresponding to all the movement point positions of the second equipment and all the deployment positions of the first equipment;

s500, selecting a base station deployment position based on a scattering body shielding condition;

s600, adjusting the deployment position of the first equipment, and repeatedly executing the steps S200-S500 until a required base station deployment position is selected;

And the message transmission is carried out between the first devices and the second devices by adopting a one-way ranging method so as to realize time synchronization between the first devices and the second devices.

2. The base station deployment method for a high-precision positioning terminal according to claim 1, wherein the number of the second devices is one or more, and selecting the base station deployment position based on a scatterer shielding condition comprises:

selecting anchor point positions corresponding to the second equipment at different moments and different positions to form an anchor point position set;

and taking the anchor point position set as a base station deployment position.

3. The base station deployment method for a high-precision positioning terminal according to claim 2, wherein selecting an anchor point position comprises:

transmitting a positioning request signal to the first equipment through the second equipment needing positioning;

the first equipment receiving the positioning request signal feeds back side-path positioning reference signals;

and the second equipment performs measurement and judgment according to the received side-road positioning reference signal, and performs positioning measurement calculation to obtain the anchor point position.

4. The base station deployment method for a high-precision positioning terminal according to claim 2, wherein selecting an anchor point position comprises:

Transmitting a positioning request signal to the first equipment through the second equipment needing positioning;

the first equipment receiving the positioning request signal performs measurement judgment according to the positioning request signal;

the first equipment which is considered to be capable of being used as an anchor point feeds back a side path positioning reference signal through measurement and judgment;

and the second equipment performs positioning measurement calculation to select anchor point positions according to the received side road positioning reference signals.

5. The base station deployment method for a high-precision positioning terminal according to claim 2, wherein selecting an anchor point position comprises:

transmitting a positioning request signal to the first equipment through the second equipment needing positioning;

the first equipment receiving the positioning request signal judges through measurement and feeds back feedback information;

and the second equipment selects the first equipment sets with the required number as anchor point sets according to the received feedback information signaling to perform positioning measurement and calculate the anchor point position.

6. The base station deployment method for a high-precision positioning terminal according to claim 2, wherein selecting an anchor point position comprises:

transmitting a positioning request signal to the first equipment through the second equipment needing positioning;

the first equipment receiving the positioning request signal performs measurement judgment according to the positioning request signal;

Feedback information is fed back to the first equipment which is considered to be capable of being used as an anchor point through measurement and judgment;

and the second equipment selects the first equipment sets with the required number as anchor point sets according to the received feedback information signaling to perform positioning measurement and calculate the anchor point position.

7. The base station deployment method for a high-precision positioning terminal according to any one of claims 3 to 6, wherein the measurement judgment includes:

acquiring related information of surrounding first equipment according to a sensing mechanism of second equipment, judging whether the information is LOS path/NLOS path, selecting an anchor point suitable for the second equipment according to a judging result, or

Acquiring related information of the second equipment and nearby first equipment through measurement of the base station, and recommending n anchor point equipment sets or lists as anchor points of the second equipment according to the related information, or

Acquiring related information of surrounding first equipment through a sensing process between second equipment and the first equipment, judging whether the information is LOS (LOSs of control) path/NLOS (non-line of control) path, and selecting an anchor point suitable for serving as the second equipment according to a judging result;

wherein the related information is a preferred set, a non-preferred set or a reuse physical side link shared channel set;

determining whether it is an LOS path/NLOS path includes: obtaining the arrival time difference of the head path and other extra paths relative to the head path and the received power of all paths according to the received signals, and if the power of the head path is the strongest power of all paths, calculating the difference between the power of the head path and the average power of all paths;

If the difference value is larger than a preset threshold value, the channel transmitted by the signal is considered to be an LOS channel, and the first path is the LOS path in the corresponding LOS channel;

if the difference is smaller than or equal to the preset threshold, the channel transmitted by the signal is considered as an NLOS channel, and the first path is the NLOS path in the corresponding NLOS channel.

8. The base station deployment method for a high-precision positioning terminal according to claim 1, wherein, when time synchronization between first devices and second devices is achieved, all the first devices and second devices in a specified area are time-synchronized according to an area ID in signaling, or

Updating the synchronization source of different zone IDs to the synchronization source of other first devices according to the zone ID in the signaling, or

One or more of the first devices forward the sidestream synchronization signal block, update the synchronization sources of the remaining first devices, or

The second device forwards the side line synchronization signal block as the synchronization source of the first device, or

Time synchronization by a one-sided loop-back time method, or

Time synchronization using a double-sided loop-back time method, or

Time synchronization is performed using unicast, bi-cast or multicast.

9. The base station deployment method for the high-precision positioning terminal according to claim 1, wherein the first device and the second device determine whether an indicator of a 1bit signaling side chain positioning reference signal transmitting port is 1 or 0 when a side chain positioning reference signal and a physical side line shared channel are required to be transmitted simultaneously or transmitted simultaneously;

if the judgment result is 1, the side chain positioning reference signal and the physical side line sharing channel are transmitted simultaneously or received simultaneously, and the power is distributed according to the priorities of the side chain positioning reference signal and the physical side line sharing channel;

if the signal is judged to be 0, the side chain positioning reference signal and the physical side line sharing channel cannot be simultaneously transmitted or received and transmitted, and the sequence of the transmission or the reception of the side chain positioning reference signal and the physical side line sharing channel is determined according to the priority of the side chain positioning reference signal and the physical side line sharing channel.

10. A base station deployment apparatus for a high-precision positioning terminal, configured to implement the base station deployment method according to any one of claims 1 to 9, comprising:

the first equipment deployment module is used for deploying one or more first equipment and/or at least one second equipment in a deployment area, wherein the first equipment is a base station or user equipment;

The second equipment deployment module is used for moving in the deployment area by using the second equipment, and in the moving process, the second equipment performs one-time beam scanning at each moving point, wherein the first equipment performs one-time beam scanning at the same time of the beam scanning of the second equipment, and the second equipment is user equipment;

the acquisition module is used for acquiring channel related information measured by the second equipment under different beam combinations based on a side link communication technology, wherein the channel related information comprises RSRP and RSRPP;

the modeling module is used for modeling the shielding situation of the scatterers at the intersection point according to the corresponding intersection point positions of the beam combinations and the corresponding channel related information so as to obtain the shielding situation of the scatterers corresponding to all the movement point positions of the second equipment and all the deployment positions of the first equipment;

the base station deployment module is used for selecting a base station deployment position based on the shielding condition of the scatterer;

the optimizing module is used for adjusting the deployment position of the first equipment and calling the second equipment deployment module, the acquiring module, the modeling module and the base station deployment module until the required base station deployment position is selected;

and the message transmission is carried out between the first devices and the second devices by adopting a one-way ranging method so as to realize time synchronization between the first devices and the second devices.

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