Method and system for realizing positioning
By acquiring information about the horizontal layers of a building and utilizing consistent frequency and frequency point characteristics, positioning is achieved using only anchor points on the same horizontal layer. This solves the problem of inaccurate three-dimensional positioning in wireless communication technology, realizes higher-precision two-dimensional approximate positioning, and reduces errors and anchor point requirements.
Patent Information
- Application Number
- CN202510244147.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-01-13
AI Technical Summary
Existing wireless communication technologies suffer from inaccurate 3D positioning within buildings, particularly due to errors and computational complexity caused by the lack of differentiation between horizontal layers. Furthermore, existing technologies fail to effectively distinguish between horizontal layers, resulting in low positioning accuracy.
By acquiring building horizontal layer information through a wireless communication system and using the same or a set of frequencies, frequency points, main scrambling codes or numbers to distinguish horizontal layers, positioning is achieved using only anchor points of the same horizontal layer, and the position is corrected by combining pre-set offset or dynamic information.
It reduces the number of anchor points required for positioning, reduces errors caused by signal reflection and diffraction, and improves positioning accuracy and precision, making it suitable for the positioning needs of most horizontal and fixed layers in human activities.
Smart Images
Figure CN121334837A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to positioning technology, in particular to a method and device or system for positioning by using positioning technology in wireless communication technology. BACKGROUND
[0002] At present, wireless communication technology contains positioning technology. However, the positioning technology is calculated by several fixed anchor points to obtain relative position and absolute position (such as Figure 1 ). Both of them contain z-axis information (for example, in Cartesian coordinate system) and altitude information. Due to the existence of horizontal shielding and vertical gap in the building, the wireless signal required for positioning in the building often has serious reflection and diffraction problems. The serious errors of angle difference and time difference caused by these problems result in the problem that the three-dimensional positioning in the building is not accurate enough, a large number of anchor points are needed, and the number of horizontal layers is calculated incorrectly.
[0003] At present, there are also positioning technologies, especially indoor positioning technologies, which do not distinguish the number of horizontal layers, but use a two-dimensional way to position. However, this positioning method does not distinguish the number of horizontal layers, so that the search for the positioning terminal can only be limited to a plane. Moreover, this way of not distinguishing the number of horizontal layers is not conducive to the collection, use and calibration of the position information of the positioning. For example, in the building, under the condition of the same relative position and absolute position, there are different horizontal layers. Other clients cannot know the number of horizontal layers of the positioning tag, so they cannot provide accurate services or data. SUMMARY
[0004] The main purpose of the present application is to provide a positioning method which can distinguish different horizontal layers of a building, thereby reducing the difficulty of positioning calculation, reducing the number of anchor points required for positioning, improving the accuracy of horizontal positioning, and determining the number of horizontal layers.
[0005] The technical solution of the present application is as follows.
[0006] In the building, the positioning can be achieved by wireless communication, which can be short-range communication, cellular communication, or any other form of wireless communication, even including satellite positioning system through wireless communication to enhance positioning. When the terminal enters a certain horizontal layer of the building, the information of the horizontal layer, such as Floor1, Floor2, Floor3, etc., is obtained or recorded through the wireless communication system. This information is part of the location information. This process can be achieved by receiving broadcast through broadcast channel, or through individual or dedicated or shared communication between the terminal and the node or cell or base station or anchor point, etc., and obtaining the frequency or frequency point of the anchor node of the horizontal layer, or the primary scrambling code, or the physical number, or the logical number. The terminal receives relevant information or signals from the anchor node of the horizontal layer. The terminal sends relevant information or signals to the anchor node of the horizontal layer. This can be positioning information or positioning signals, or other relevant information or signals. In the positioning two-way communication process, only the anchor nodes of the horizontal layer are used (such as Figure 2 ). Thus, the anchor points involved in the positioning technology are all located in the same horizontal layer as the terminal (such as Figure 3 ).
[0007] These methods can be implemented by a system having these methods.
[0008] The frequency or frequency point of the horizontal layer can be the same or a group. The primary scrambling code can be the same or a group. The physical number or the logical number can be a group.
[0009] If the horizontal layer in the building is not truly horizontal, but has a certain slope or height difference, or the horizontal layer has other error conditions. The positioning system can correct or calculate the relative position and absolute position through the pre-set offset or dynamic information of the terminal (such as Figure 2 ).
[0010] The advantage of this invention is that the height positioning in three-dimensional positioning in the positioning technology involving wireless communication technology is converted into the number of horizontal layers. The three-dimensional positioning is converted into approximate two-dimensional positioning, thereby effectively reducing the number of anchor points required for positioning, thereby planarizing the positioning technology involving wireless communication technology, and effectively reducing the error or failure caused by signal reflection and diffraction in wireless communication technology.
[0011] Another advantage of the present invention is that the physical characteristics of the channel, such as the frequency or frequency point, the primary scrambling code, etc. in the base station or node or anchor point in the wireless communication technology can be used as the feature to distinguish the different horizontal layers of the building. The same or a group of the physical characteristics can be set by planning or self-adaptation, so as to reduce the interference and improve the accuracy of the wireless signal used for positioning and the actual positioning precision.
[0012] Since most of the activities of human beings or devices are fixed on the horizontal layers of the building, it is more important to determine the horizontal layer than to determine the height position. The serious errors of the angle difference and time difference for positioning caused by the diffraction, reflection or multipath problem of the wireless signal in the wireless communication technology can result in the positioning error or even failure. Therefore, it is more accurate and practically meaningful to make the approximate two-dimensional positioning in a plane or in the line of sight with multiple anchor points than to make the positioning in three dimensions. Therefore, the concept of the number of horizontal layers is introduced into the positioning technology in the wireless communication technology, which is an important feature of the present invention and is different from the prior art. The positioning technology and its application will have outstanding and significant creativity. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The schematic diagram of the prior art in the building with many obstructions, diffraction and reflection
[0014] Figure 2 The flowchart of the method for realizing the positioning of the present invention
[0015] Figure 3 The schematic diagram of the anchor points of the positioning technology of the present invention are located on the same horizontal layer as the terminal DETAILED DESCRIPTION
[0016] 1. When the terminal enters a certain horizontal layer of the building, the relevant information of the horizontal layer is obtained after the discovery device, or the attachment, or the update in the wireless communication system, and the frequency or frequency point, or the primary scrambling code, or the physical number, or the logical number, or other identification of the anchor node is obtained.
[0017] 1a. The terminal obtains by receiving the broadcast through the broadcast channel.
[0018] 1b. The terminal and the node or cell or base station or anchor point, etc. are realized by the individual or special or shared communication mode. This process can be included in the attachment, location update, area update, etc.
[0019] The relevant information of the horizontal layer can be placed in the location management information or can be a separate information. However, it must be consistent, and the consistent information is used as useful information or transmitted externally. For example, Floor 1, Floor 2, Floor 3, the same location can be set as a positioning area, such as the same tunnel, the same building, and the same three-dimensional underground parking lot.
[0020] The relevant information of the horizontal layer is shown in Table 1
[0021] The frequency or frequency point of a certain horizontal layer can be the same or a group. The main scrambling code can be the same or a group. The physical number or the logical number can be a group.
[0022] The frequency or frequency point table is shown in Table 2
[0023] The main scrambling code table is shown in Table 3
[0024] The field setting of the physical number or the logical number can be set according to the actual wireless communication system, which will not be described here.
[0025] 2. The terminal receives the relevant information or the relevant signal from the anchor node of the horizontal layer, and sends the relevant information or the relevant signal to the anchor node of the horizontal layer.
[0026] 3. In the positioning bidirectional communication process, only the anchor node of the horizontal layer is used.
[0027] 4. The positioning system can correct or calculate the relative position and the absolute position through the pre-set bias or the dynamic information of the terminal.
[0028] The above description is only a few typical examples of the positioning technology of the present application in different wireless communication technologies, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.
[0029] The wireless communication technology can be short-range communication technology, cellular communication technology, or any other form of wireless communication technology, even including satellite positioning systems through wireless communication to enhance positioning technology.
Claims
1. A method for achieving positioning, characterized in that, include: When a terminal enters a certain horizontal floor of a building, it acquires or records information about that horizontal floor through a wireless communication system.
2. The method according to claim 1, characterized in that, The terminal obtains the frequency or frequency point of the anchor node of the horizontal layer, or the main scrambling code, or the physical number, or the logical number.
3. The method according to claim 1 or claim 2, characterized in that, For the aforementioned information, for the aforementioned frequency or frequency point, or main scrambling code, or physical number, or logical number, add corresponding fields.
4. The method according to claim 1 or claim 2, characterized in that, The terminal receives relevant information or signals from the anchor node of the horizontal layer and sends the relevant information or signals to the anchor node of the horizontal layer.
5. The method according to claim 1 or claim 2, characterized in that, During the two-way communication positioning process, the terminal only uses the anchor node of the horizontal layer.
6. A system for achieving positioning, characterized in that, Wireless communication systems can send information about this horizontal layer to terminals.
7. The system according to claim 6, characterized in that, The wireless communication system sends to the terminal the frequency or frequency point of the anchor node of the horizontal layer, or the main scrambling code, or the physical number, or the logical number.
8. The system according to claim 6 or claim 7, characterized in that, This wireless communication system uses only the anchor node of the horizontal layer during the positioning of two-way communication.
9. The system according to claim 6 or claim 7, characterized in that, The frequencies or frequency points of this horizontal layer can be set to be the same or a group. The main scrambling codes can be set to be the same or a group. The physical numbers or logical numbers can be set to a group.
10. The system according to claim 6 or claim 7, characterized in that, If the horizontal layer has a certain slope, height difference, or other factors that cause errors, the relative and absolute positions can be corrected or calculated using pre-set offsets or dynamic information from the terminal.