An extended mobile communication base station positioning enhancement method, apparatus, and storage medium

Abstract

This invention discloses an extended mobile communication base station positioning enhancement method, apparatus, and storage medium, comprising: allocating independent positioning signal resources in a baseband processing unit for multiple radio frequency remote units used for locating the same terminal according to a positioning enhancement strategy, and simultaneously allocating corresponding positioning signal resources to the terminal; the radio frequency remote units include multiple radio frequency remote units under the same cell extension unit or multiple radio frequency remote units under different cell extension units; the positioning signal resources include downlink positioning signal resources; uplink positioning signal resources; and uplink and downlink positioning signal resources; based on the positioning enhancement strategy, obtaining the positioning signal time difference and / or the transmitted and received signal strength between the multiple radio frequency remote units and the terminal; and calculating the terminal location based on the positioning signal time difference and / or the transmitted and received signal strength. This invention achieves independent signal processing at the radio frequency remote unit level while maintaining low cost, thereby improving positioning accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, in particular to an extended mobile communication base station positioning enhancement method and device and storage medium. BACKGROUND

[0002] The existing extended base station connects multiple radio remote units (RRUs) through an extension unit (EU) to cover a larger range with a single cell and reduce networking costs. However, such a base station has significant defects in positioning applications: all radio remote units RRU in the same cell need to send the same downlink positioning signal (such as SSB or DL-PRS), which causes the terminal to be unable to distinguish the signals of different radio remote units RRU and only rely on signals between multiple cells for positioning. Since the cell spacing is large (center distance D1), the positioning error is high, and the uplink positioning signal is uniformly processed in the uplink weighting combination unit of the extension unit, and the baseband processing unit (BBU) cannot separate the signals from different radio remote units RRU in the same cell, and cannot take advantage of the small spacing (center distance D2) between radio remote units RRU in the cell to improve accuracy.

[0003] In addition, when the positioning method on the market relies on multi-base station cooperation (such as Multi-RTT), the synchronization error between the radio remote units RRU inside the extended base station cannot be eliminated, further limiting the positioning accuracy. Although such a base station reduces costs by sharing baseband processing, the lack of positioning capability makes it difficult to meet the needs of high-precision scenarios, such as indoor navigation or dense urban positioning. Therefore, how to maintain low cost while realizing independent signal processing at the radio remote unit RRU level has become a key challenge to improve the positioning performance of the extended base station. SUMMARY

[0004] Based on the deficiencies of the above prior art, the present application provides an extended mobile communication base station positioning enhancement method, device and storage medium, which maintains low cost while realizing independent signal processing at the radio remote unit RRU level and improves positioning accuracy.

[0005] To solve the above technical problems, the first aspect of the present application discloses an extended mobile communication base station positioning enhancement method, comprising:

[0006] According to the positioning enhancement strategy, independent positioning signal resources are allocated to multiple radio remote units for positioning the same terminal in the baseband processing unit, and the terminal is allocated corresponding positioning signal resources synchronously; the radio remote units include multiple radio remote units under the same cell extension unit or multiple radio remote units under different cell extension units; the positioning signal resources include downlink positioning signal resources, uplink positioning signal resources, and uplink and downlink positioning signal resources;

[0007] acquire a time difference of positioning signals and / or a signal strength of transmission and reception between the plurality of radio remote units and the terminal based on the positioning enhancement strategy;

[0008] calculate the terminal position according to the time difference of positioning signals and / or the signal strength of transmission and reception.

[0009] The positioning enhancement strategy comprises configuring downlink positioning signal resources and / or configuring uplink positioning signal resources.

[0010] In some embodiments, the configuring downlink positioning signal resources comprises inserting independent downlink positioning signals for the radio remote units or each transmission channel of the radio remote units before or after a downlink replication unit of the extension unit, and synchronously sending corresponding positioning signal resource information for the terminal.

[0011] In some embodiments, the downlink positioning signals comprise at least one of the following: independent beam identification configured by SSB signals, downlink positioning reference signals based on reserved time-frequency resources.

[0012] In some embodiments, the configuring uplink positioning signal resources comprises configuring uplink positioning signal resources for the terminal, and extracting uplink positioning signals received by each radio remote unit or each reception channel of the radio remote unit before an uplink weighted combination unit of the extension unit.

[0013] In some embodiments, the uplink positioning signals comprise at least one of the following: a sounding reference signal of the terminal, a dedicated uplink positioning reference signal of the terminal.

[0014] In some embodiments, acquiring the time difference of positioning signals and / or the signal strength of transmission and reception based on the positioning enhancement strategy comprises:

[0015] When the positioning enhancement strategy is configuring downlink positioning signal resources, acquiring a time difference of a plurality of downlink positioning signals reaching the terminal and / or a signal strength of transmission and reception;

[0016] When the positioning enhancement strategy is configuring uplink positioning signal resources, acquiring a time difference of a plurality of uplink positioning signals reaching the plurality of radio remote units and / or a signal strength of transmission and reception;

[0017] When the positioning enhancement strategy is simultaneously configuring downlink positioning signal resources and uplink positioning signal resources, acquiring a round trip time difference of a plurality of downlink positioning signals and uplink positioning signals of the same terminal and / or a signal strength of transmission and reception of the downlink positioning signals and the uplink positioning signals; the round trip time difference is a difference between downlink positioning signals and uplink positioning signals round trip times RTT of the plurality of radio remote units.

[0018] In some embodiments, when the positioning enhancement strategy is to configure downlink positioning signal resources and uplink positioning signal resources simultaneously, the round trip time difference of multiple downlink positioning signals and uplink positioning signals of the same terminal and / or the signal strength of the transmission and reception of the uplink and downlink positioning signals is obtained, and the terminal position is calculated according to the round trip time difference of the uplink and downlink positioning signals, comprising:

[0019] Synchronizing the uplink and downlink positioning signal transmission and reception time stamps of multiple radio remote units (RRUs) and the same terminal;

[0020] Eliminating the synchronization error between the radio remote units, and calculating the round trip time difference of the uplink and downlink positioning signals between the terminal and each radio remote unit;

[0021] Based on the round trip time difference of the uplink and downlink positioning signals of multiple radio remote units, the terminal position is output by a multi-cell round trip time positioning algorithm;

[0022] And / or, the terminal position is calculated according to the signal strength of the transmission and reception of the uplink and downlink positioning signals, comprising:

[0023] According to the signal strength of the downlink positioning signal transmission of multiple radio remote units and the signal strength of the terminal reception, the downlink loss is calculated, and the distance between multiple radio remote units and the terminal is calculated according to the downlink loss;

[0024] And / or, according to the signal strength of the uplink positioning signal transmission of the terminal and the signal strength of the multiple radio remote unit reception, the uplink loss is calculated, and the distance between multiple radio remote units and the terminal is calculated according to the uplink loss;

[0025] The average value of the distances calculated according to the uplink and downlink positioning signal strength is taken as the distance between multiple radio remote units and the terminal; the terminal position is calculated according to the distance between multiple radio remote units and the terminal calculated by downlink or uplink or uplink and downlink.

[0026] In a second aspect, an extended mobile communication base station positioning enhancement device is disclosed, comprising:

[0027] A strategy configuration module, which, according to a positioning enhancement strategy, allocates independent positioning signal resources for multiple radio remote units for positioning the same terminal in a baseband processing unit, and synchronously allocates corresponding positioning signal resources for the terminal; the radio remote units include multiple radio remote units under the same cell extension unit or multiple radio remote units under different cell extension units; the positioning signal resources include downlink positioning signal resources, uplink positioning signal resources, and uplink and downlink positioning signal resources;

[0028] A signal processing module, configured in the downlink and / or uplink of the extension unit, generates and inserts independent downlink positioning signals, and extracts and separates independent uplink positioning signals;

[0029] a positioning processing module, based on the positioning enhancement strategy, acquires a plurality of radio remote units and terminal positioning signal time difference and / or transmitted and received signal strength between the terminal; and calculates the terminal position according to the positioning signal time difference and / or transmitted and received signal strength.

[0030] In a third aspect, a computer storage medium is disclosed, and the computer storage medium stores a computer program, and the computer program is executed by a processor to implement the positioning enhancement method of the extended mobile communication base station according to any one of the above aspects.

[0031] Compared with the prior art, the positioning enhancement method of the extended mobile communication base station has the following beneficial effects:

[0032] The positioning enhancement method, device and storage medium of the extended mobile communication base station are provided, uplink / downlink positioning signal resources are independently configured for each radio remote unit of the extended base station, the problem that signals of multiple radio remote units in the same cell cannot be distinguished and positioning error is large in the conventional scheme is solved, and the terminal or the base station can realize high-precision positioning based on independent signals of multiple radio remote units in the same cell. While improving the positioning precision, the baseband processing capability requirement of the cell service channel does not need to be increased, and the requirement of the front transmission bandwidth of the baseband processing unit is not significantly increased. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The figure is a working mode schematic diagram of the extended base station.

[0034] Figure 2 The figure is a connection schematic diagram of the baseband processing unit and the radio unit.

[0035] Figure 3 The figure is a networking mode schematic diagram.

[0036] Figure 4 The figure is a positioning center distance schematic diagram.

[0037] Figure 5 The figure is a flow schematic diagram of the positioning enhancement method of the extended mobile communication base station provided by the present application.

[0038] Figure 6 The figure is a working mode schematic diagram of the extended base station in the positioning enhancement method of the extended mobile communication base station provided by the present application.

[0039] Figure 7 The figure is a downlink positioning signal (SSB) resource configuration schematic diagram in the positioning enhancement method of the extended mobile communication base station provided by the present application.

[0040] Figure 8A downlink positioning signal (DL-PRS) resource reservation schematic diagram in an extended mobile communication base station positioning enhancement method provided by the application;

[0041] Figure 9 An uplink positioning signal resource occupation schematic diagram in an extended mobile communication base station positioning enhancement method provided by the application. DETAILED DESCRIPTION

[0042] For better understanding and implementation, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the application.

[0043] The terms "comprising" and "having" and any variations thereof in the embodiments of the application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or modules does not have to be limited to the clearly listed steps or modules, but can include other steps or modules that are not clearly listed or inherent to the process, method, product or device.

[0044] In order to reduce the networking cost of a mobile communication base station, an extended base station is often used, as shown in Figure 1 A wireless cell with a baseband processing unit supporting M antennas in a single cell uses an extension unit (EU or RHub) to simultaneously connect N radio remote units (RRU) supporting M antennas. Multiple radio remote units RRU only expand the coverage range without increasing the number of antennas for baseband processing of the cell, which can reduce the cost. The downlink module 1 of the extension unit represents a part of the baseband processing function, and its output is the time domain or frequency domain data of each antenna in the cell. The baseband processing function in the downlink module 1 is not limited in this application, and the application is not limited by the function of the extension unit. Similarly, the uplink module 1 is also similar, and its specific function is irrelevant to the application.

[0045] The extension unit EU can be a separate device form or a functional unit inside the radio remote unit RRU, as shown in Figure 2 Each radio remote unit RRU in a cell can adopt a cascaded form, and the function of the extension unit can be implemented inside the first-stage radio remote unit RRU, and the logical function and Figure 1 are the same.

[0046] As shown in Figure 1As shown, the extended base station is composed of a baseband processing unit, an expansion unit, a radio remote unit and an antenna. Currently, the extended base station is used for positioning. The resource scheduling and baseband processing of the downlink positioning signal of the base station only need the baseband processing unit (BBU) to process. The positioning application initiates a positioning request to the positioning processing module. The positioning processing module initiates a positioning request to the base station through the network. The positioning request is processed to trigger the base station scheduling module to schedule the positioning resource. The downlink positioning signal is allocated with resources. After the baseband processing, the EU, the radio remote unit (RRU) and the like send the signal to the terminal (UE) through the air interface. The UE calculates the position of the terminal according to the received signal. Figure 1 As shown, the positioning signal of the multiple base stations or cells is used to calculate the position of the UE. In the uplink direction, the service cell scheduling module schedules the UE to send the uplink positioning signal. The multiple base stations or cells can only calculate the position of the UE through the uplink positioning signal information.

[0047] If the RTT time delay difference of the downlink and uplink positioning signals is used at the same time, a more accurate terminal position can be obtained. This process can be performed by the positioning processing module to receive the downlink information from the terminal and the uplink information from the multiple base station baseband uplink positioning signal processing units, so as to calculate a more accurate terminal position according to the RTT time delay difference of the multiple base stations.

[0048] When the extended base station is used, the multiple radio remote units (RRUs) under a single cell of the base station can only send the same downlink positioning signal. For the uplink, the baseband processing unit (BBU) cannot distinguish the uplink positioning signals sent by each radio remote unit (RRU) of the single cell. Only different cell radio remote units (RRUs) can be used for positioning. The networking mode shown in Figure 3 is used.

[0049] As shown in Figure 4 , since there are multiple radio remote units (RRUs) in a cell, the coverage range is large, the center distance D1 of the adjacent cells is large, and the positioning error is large. If the radio remote units (RRUs) in a cell can be positioned, the center distance D2 of the coverage range of the adjacent radio remote units (RRUs) is small, and the positioning error is small. However, since the current extended base station can only process cell-level positioning signals, the radio remote unit (RRU)-level positioning cannot be realized.

[0050] Based on the above technology, the application provides an extended mobile communication base station positioning enhancement method. By dynamically configuring the positioning signal resource, combining the downlink or uplink or joint positioning strategy, and using the independent signal processing capability of the multiple radio remote units under the same expansion unit, the positioning accuracy of the terminal is significantly improved.

[0051] As shown in Figure 5 , the method comprises the following steps.

[0052] Step S1: According to the positioning enhancement strategy, the baseband processing unit allocates independent positioning signal resources for multiple radio frequency remote units used for positioning the same terminal, and synchronously allocates corresponding positioning signal resources for the terminal; the radio frequency remote unit includes multiple radio frequency remote units under the same cell extension unit or multiple radio frequency remote units under different cell extension units; the positioning signal resources include downlink positioning signal resources; uplink positioning signal resources; uplink and downlink positioning signal resources;

[0053] Positioning enhancement strategies include configuring downlink positioning signal resources and / or configuring uplink positioning signal resources. When configuring downlink positioning signal resources, such as... Figure 6 As shown, the baseband processing unit (BBU) allocates independent downlink positioning signal resources to each radio remote unit (RRU) or antenna. That is, after the downlink replication unit of the extension unit, an independent downlink positioning signal is inserted for each transmit channel of the radio remote unit, and the corresponding positioning signal resource information is simultaneously sent to the terminal.

[0054] Multiple radio frequency (RF) remote units can be multiple RF remote units under the same cell extension unit or multiple RF remote units under different cell extension units, as long as they can simultaneously locate a single terminal. In some implementations, multiple RF remote units can be located under the same cell extension unit, such as multiple RF remote units under the extension unit in cell A simultaneously jointly locating the same terminal. It is understood that while there is one extension unit within a cell, this extension unit is not limited to a single physical device; it can be located on multiple physical devices. In other words, multiple RF remote units can be located on multiple physical devices.

[0055] Alternatively, the radio frequency remote unit can be located under different extension units across cells. For example, along a high-speed rail line, the terminal can be jointly located by the radio frequency remote units under the respective extension units of adjacent cells A and B to achieve continuous tracking. Each radio frequency remote unit participating in the positioning is configured with independent positioning signal resources.

[0056] The downlink positioning signal includes at least one of the following: an independent beam identifier configured via an SSB signal, or a downlink positioning reference signal based on reserved time and frequency resources. Taking 5G as an example, the positioning signal can be an SSB signal with different BeamIDs (corresponding to SSB Indexes) inserted (the SSB Index is derived from the DM-RS of the PBCH), such as... Figure 7As shown, taking a cell with four Remote Radio Units (RRUs) as an example, multiple SSB resources can be configured in the Baseband Processing Unit (BBU) within one SSB cycle. In the replication unit of the Extended Unit (EU), each RRU retains only one SSB, while other SSB positions remain idle and do not emit signals. Each SSB is bound to a unique Beam ID. Different SSBs are assigned to different RRUs through the downlink replication unit of the Extended Unit. The SSB resource configuration method is clearly defined in relevant standard protocols. For example, RRU1 transmits SSB Index = 1, and RRU2 transmits SSB Index = 2.

[0057] In another implementation, a separate downlink positioning reference signal (DL-PRS) based on reserved time-frequency resources can also be inserted into the downlink replication unit for each radio frequency remote unit (RRU). For example... Figure 8 As shown, in the time-frequency resource grid of the baseband processing unit (BBU), an independent DL-PRS resource block is reserved for each radio remote unit (RRU). The extension unit maps the DL-PRS of each RRU to the corresponding position. In this scenario, the baseband processing unit (BBU) needs to reserve resource positions for each RRU. Figure 7 This is for illustrative purposes only. For methods of configuring positioning signal resources, please refer to relevant standard protocols.

[0058] When configuring uplink positioning signal resources, uplink positioning signal resources are configured for the terminal, and independent uplink positioning signal resources are allocated to each remote radio unit (RRU) or each receiving channel of the RRU through the base station baseband processing unit (BBU). That is, before the uplink weighted combining unit of the extension unit, the uplink positioning signal received by each RRU or each receiving channel of the RRU is extracted. Before the uplink weighted combining unit of the extension unit, the detection reference signal (SRS) or the terminal's dedicated uplink positioning reference signal (UL-PRS) received by each RRU or each receiving channel of the RRU is extracted through parallel processing channels. For example, the SRS signals of RRU1 and RRU2 are transmitted to the positioning processing module through channels 1 and 2, respectively. Configuring downlink positioning signal resources and configuring uplink positioning signal resources, also known as uplink-downlink joint positioning enhancement, involves simultaneously allocating independent downlink and uplink positioning resources to each RRU.

[0059] In some implementations, the positioning enhancement strategy can be dynamically selected based on network requirements or higher-level instructions to meet the needs of the application scenario and improve positioning accuracy. For example, in scenarios with high positioning accuracy requirements, a joint uplink and downlink positioning enhancement mode can be selected, while in wide-coverage scenarios, a downlink positioning enhancement mode can be selected.

[0060] Step S2: Based on the positioning enhancement strategy, obtain the positioning signal time difference and / or the signal strength of the positioning signal transmission and reception;

[0061] Extended base stations send or receive positioning signals from terminals, and obtain the corresponding positioning signal time difference and / or the signal strength of the positioning signal transmission and reception.

[0062] When the positioning enhancement strategy is to configure downlink positioning signal resources, the time difference of arrival of multiple downlink positioning signals to the terminal and / or the signal strength of transmission and reception are obtained; the terminal receives downlink positioning signals from multiple radio frequency remote units, which can be independent beam identifiers configured through SSB signals or downlink positioning reference signals based on reserved time and frequency resources, and measures the time difference of arrival (TDOA) of each signal and / or the signal strength of transmission and reception, and reports it to this extended base station.

[0063] When the positioning enhancement strategy is to configure uplink positioning signal resources, the time difference of arrival of multiple uplink positioning signals to multiple radio frequency remote units and / or the signal strength of transmission and reception are obtained; the multiple radio frequency remote units receive the SRS or UL-PRS signal of the terminal, measure the signal arrival time difference (TDOA) and / or the signal strength of transmission and reception, and transmit it to the positioning processing module.

[0064] When the positioning enhancement strategy simultaneously configures downlink positioning signal resources and uplink positioning signal resources, it acquires the round-trip time difference (RTT) of multiple downlink and uplink positioning signals from the same terminal and / or the signal strength of the transmitted and received uplink and downlink positioning signals; the RTT is the difference between the RTTs of the downlink and uplink positioning signals of multiple radio frequency remote units. The extension unit synchronizes the downlink signal transmission time T1 and the uplink signal reception time T2 of each radio frequency remote unit. Simultaneously, the receiving terminal reports the downlink signal reception time T3 and the uplink signal transmission time T4, the downlink signal transmission time T1 and the uplink signal reception time T2, and calculates the RTT between the terminal and each radio frequency remote unit: RTT = (T3 – T1) + (T2 – T4). This calculation method can eliminate synchronization errors between multiple radio frequency remote units and calculate the time difference between the terminal and the corresponding multiple radio frequency remote units' RTTs.

[0065] And / or calculate the downlink path loss based on the signal strength of the downlink positioning signal transmitted by the multiple radio frequency remote units and the signal strength received by the terminal, and calculate the distance between the multiple radio frequency remote units and the terminal based on the path loss; and / or calculate the uplink path loss based on the signal strength of the uplink positioning signal transmitted by the terminal and the signal strength received by the multiple radio frequency remote units, and calculate the distance between the multiple radio frequency remote units and the terminal based on the path loss.

[0066] Step S3: Calculate the terminal position based on the time difference of the positioning signal and / or based on the distance between the terminal and multiple radio frequency remote units calculated from the signal strength.

[0067] When the positioning enhancement strategy is to configure downlink positioning signal resources, the terminal can be located using the multi-point time delay difference positioning method (DL-TOA) based on the downlink positioning signals (TDOA) from multiple radio remote units reported by the terminal, or it can be located based on the field strength of the positioning signals received from different radio remote units (RRU) to solve for the specific location of the terminal.

[0068] When the positioning enhancement strategy configures uplink positioning signal resources, such as utilizing the terminal's SRS signal or a dedicated uplink positioning signal UL-PRS, the uplink positioning signal received by the terminal from the multi-point remote radio unit (RRU) is sent to the "uplink positioning signal processing" unit before "uplink weighted merging." Uplink positioning signals received by multiple RRUs in a cell can be processed separately. UL-TOA-based positioning is achieved using the multi-point RRU, and / or the terminal's specific location is determined based on the signal strength transmitted and received between the terminal's uplink positioning and the multi-point RRUs. The resource usage of the uplink positioning signal after "uplink weighted merging" among the UE, multiple RRUs, and multiple RRUs is as follows: Figure 9 As shown, the resources they occupy are in the same location.

[0069] When the positioning enhancement strategy involves simultaneously configuring downlink and uplink positioning signal resources, the round-trip time difference (RTD) of multiple uplink and downlink positioning signals is obtained, and the terminal position is calculated based on the RTD of the uplink and downlink positioning signals, including:

[0070] Synchronize the uplink and downlink positioning signal transmission and reception timestamps of multiple radio frequency remote units (RRUs);

[0071] The round-trip time difference (RTT) between the uplink and downlink positioning signals of the terminal and each radio frequency remote unit is calculated, which is the difference in RTT between multiple radio frequency remote units and the terminal.

[0072] Based on the round-trip time difference of uplink and downlink positioning signals from multiple radio frequency remote units, the terminal location is output through a multi-cell round-trip time positioning algorithm.

[0073] And / or, calculating the terminal location based on the signal strength of the transmitted and received uplink and downlink positioning signals, including:

[0074] The downlink path loss is calculated based on the signal strength transmitted by the downlink positioning signal of the multiple radio frequency remote units and the signal strength received by the terminal. The distance between the multiple radio frequency remote units and the terminal is then calculated based on the downlink path loss.

[0075] And / or, calculate the uplink path loss based on the signal strength of the uplink positioning signal sent by the terminal and the signal strength received by the multiple radio frequency remote units, and calculate the distance between the multiple radio frequency remote units and the terminal based on the uplink path loss;

[0076] The average distance calculated based on the uplink and downlink positioning signal strength is taken as the distance between multiple radio frequency remote units and the terminal; the terminal position is calculated based on the distance between multiple radio frequency remote units and the terminal calculated based on downlink or uplink or uplink and downlink.

[0077] Positioning is based on the signal strength of the positioning signal transmitted and received between multiple radio frequency remote units and the terminal. The difference between the distances between the multiple radio frequency remote units and the terminal is calculated based on the uplink path loss and downlink path loss. The distance difference is converted into a time difference. The principle is the same as the multi-cell round-trip time positioning algorithm that outputs the terminal position.

[0078] Multi-RTT positioning, a multi-cell round-trip time positioning algorithm, is used to improve positioning accuracy by utilizing the round-trip information of uplink and downlink positioning signals. Multi-RTT positioning achieves higher positioning accuracy because it eliminates the influence of synchronization errors between different remote radio units (RRUs). The specific positioning algorithm can be determined based on actual conditions and higher-level specifications, and is not limited in this application.

[0079] Based on the same inventive concept, this application also provides an extended mobile communication base station positioning enhancement device, comprising:

[0080] The strategy configuration module determines the positioning enhancement strategy, which is used to allocate independent positioning signal resources to multiple radio frequency remote units for the same terminal, and synchronously allocate corresponding positioning signal resources to the terminal; the radio frequency remote unit includes multiple radio frequency remote units under the same cell extension unit or multiple radio frequency remote units under different cell extension units;

[0081] The signal processing module, configured on the downlink and / or uplink of the expansion unit, generates and inserts independent downlink positioning signals and extracts and separates independent uplink positioning signals;

[0082] The positioning processing module, based on the positioning enhancement strategy, obtains the time difference of positioning signals and / or the signal strength of transmitted and received signals between multiple radio frequency remote units and the terminal; and calculates the terminal position based on the time difference of positioning signals and / or the signal strength of transmitted and received signals.

[0083] This invention achieves independent positioning signal processing at the RRU level through an extension unit: In the downlink direction, the baseband processing unit configures independent positioning signal resources for each RRU and inserts differentiated signals after the downlink replication unit of the extension unit, enabling the terminal to identify the positioning signals of different RRUs; in the uplink direction, the extension unit extracts the uplink positioning signals independently received by each RRU before uplink weighted merging, avoiding signal mixing. This mechanism supports dynamic switching between three positioning modes—downlink only, uplink only, or combined uplink and downlink. For example, in complex indoor environments, the Multi-RTT mode can synchronize the transmit and receive timestamps of multiple RRUs, eliminating synchronization errors by calculating the round-trip time difference between the terminal and each RRU, achieving a positioning accuracy of up to 1.5 meters, which is more than 80% higher than traditional methods.

[0084] The implementation of this invention deeply integrates existing standards at the hardware and protocol levels. Taking 5G networks as an example, downlink positioning signals can reuse SSB beams or DL-PRS resources defined in 3GPP R16, dynamically mapped to different RRUs through the extension unit; uplink signals are based on the terminal's SRS or UL-PRS configuration, separated by the extension unit and transmitted to the positioning engine. Resource allocation occupies only a small portion of air interface time-frequency resources, with limited increase in demand for baseband processing capabilities and fronthaul bandwidth, maintaining the low-cost advantage of extended base stations while ensuring accuracy. In practical applications, this solution can adapt to multiple scenario requirements: in mixed indoor and outdoor areas such as high-speed rail stations, cross-cell RRU collaborative positioning can exchange resource allocation information through the Xn interface, jointly calculate terminal positions, and achieve seamless navigation; in industrial IoT scenarios, RRU-level high-precision positioning can support millimeter-level trajectory control of AGV vehicles, highlighting the universality of the technology. Through the collaborative optimization of underlying signal processing innovation and upper-layer positioning algorithms, this invention endows extended base stations with high-precision positioning capabilities, bridging the technological gap between low-cost networking and accurate location services.

[0085] Based on the same inventive concept, the present invention also provides a computer device, comprising: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and executed the steps of the extended mobile communication base station positioning enhancement method described above.

[0086] The processing methods for computer devices can be referred to the description of the methods above, and will not be repeated here.

[0087] This application also provides a non-transitory machine-readable storage medium storing an executable program, which, when run by a microprocessor, causes the processor to execute the method provided in the above embodiments.

[0088] This invention discloses a computer-readable storage medium storing a computer program for electronic data interchange, wherein the computer program causes a computer to perform the described methods.

[0089] This invention discloses a computer program product including a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform the described method.

[0090] The embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0091] Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, including read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically-erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0092] Finally, it should be noted that the embodiments disclosed in this invention are merely preferred embodiments of this invention and are only used to illustrate the technical solutions of this invention, not to limit it. Although this invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this invention.

Claims

1. An extended mobile communication base station positioning enhancement method, characterized by, Comprise: According to the positioning enhancement strategy, independent positioning signal resources are allocated in the baseband processing unit for multiple radio remote units in the same cell for positioning the same terminal, and the corresponding positioning signal resources are allocated for the terminal synchronously; the radio remote unit comprises multiple radio remote units under the same cell expansion unit or multiple radio remote units under different cell expansion units; the positioning signal resource comprises downlink positioning signal resource; uplink positioning signal resource; Uplink and downlink positioning signal resources; Based on the positioning enhancement strategy, the uplink positioning signal is sent to the uplink positioning signal processing unit of the baseband processing unit before the uplink weighted combining unit in the expansion unit, and the time difference and / or the signal strength of the positioning signal between the multiple radio remote units and the terminal is obtained; The positioning enhancement strategy comprises: configuring downlink positioning signal resources and / or configuring uplink positioning signal resources; configuring downlink positioning signal resources comprises: inserting independent downlink positioning signals for radio remote units or each transmission channel of radio remote units in the expansion unit, and synchronously sending corresponding positioning signal resource information to the terminal; According to the time difference and / or the signal strength of the positioning signal, the terminal position is calculated, comprising: When the positioning enhancement strategy is to configure downlink positioning signal resources and uplink positioning signal resources at the same time, the round trip time difference of multiple downlink positioning signals and uplink positioning signals of the same terminal and / or the signal strength of the uplink and downlink positioning signals is obtained; the round trip time difference is the difference between the downlink positioning signals and the uplink positioning signals of at least two radio remote units, and the synchronization error between the expansion unit and the radio remote unit is eliminated based on the round trip time difference.

2. The extended mobile communication base station positioning enhancement method of claim 1, wherein, The downlink positioning signal comprises at least one of the following: independent beam identification configured by SSB signal, downlink positioning reference signal based on reserved time-frequency resource.

3. The extended mobile communication base station positioning enhancement method of claim 1, wherein, The configuration of uplink positioning signal resource comprises: configuring uplink positioning signal resource for the terminal, and extracting the uplink positioning signal received by each radio remote unit or each receiving channel of radio remote unit before the uplink weighted combining unit of the expansion unit.

4. The extended mobile communication base station positioning enhancement method of claim 3, wherein, The uplink positioning signal comprises at least one of the following: sounding reference signal of the terminal, dedicated uplink positioning reference signal of the terminal.

5. The extended mobile communication base station positioning enhancement method of claim 2 or 4, wherein, Based on the positioning enhancement strategy, the time difference and / or the signal strength of the positioning signal is obtained, comprising: When the positioning enhancement strategy is to configure downlink positioning signal resources, the time difference and / or the signal strength of the multiple downlink positioning signals reaching the terminal is obtained; When the positioning enhancement strategy is to configure uplink positioning signal resources, the time difference and / or the signal strength of the uplink positioning signal reaching multiple radio remote units is obtained.

6. The extended mobile communication base station positioning enhancement method of claim 5, wherein, When the positioning enhancement strategy is to configure downlink positioning signal resources and uplink positioning signal resources simultaneously, the round trip time difference of multiple downlink positioning signals and uplink positioning signals of the same terminal and / or the signal strength of the transmission and reception of the uplink and downlink positioning signals is obtained, and the terminal position is calculated according to the round trip time difference of the uplink and downlink positioning signals, comprising: Synchronizing the uplink and downlink positioning signal transmission and reception time stamps of multiple radio remote units (RRUs) and the same terminal; Eliminating the synchronization error between the radio remote units, and calculating the round trip time difference of the uplink and downlink positioning signals between the terminal and each radio remote unit; Based on the round trip time difference of the uplink and downlink positioning signals of multiple radio remote units, the terminal position is output by a multi-cell round trip time positioning algorithm; And / or, calculating the terminal position according to the signal strength of the transmission and reception of the uplink and downlink positioning signals, comprising: According to the signal strength of the downlink positioning signal transmission of multiple radio remote units and the signal strength of the terminal reception, the downlink loss is calculated, and the distance between multiple radio remote units and the terminal is calculated according to the downlink loss; And / or, according to the signal strength of the uplink positioning signal transmission of the terminal and the signal strength of the multiple radio remote unit reception, the uplink loss is calculated, and the distance between multiple radio remote units and the terminal is calculated according to the uplink loss; The average value of the distances calculated according to the uplink and downlink positioning signal strength is taken as the distance between multiple radio remote units and the terminal; the distance between multiple radio remote units and the terminal calculated according to the downlink or uplink or uplink and downlink is used to calculate the terminal position.

7. An extended mobile communication base station positioning enhancement apparatus, characterized by, Performing an extended mobile communication base station positioning enhancement method according to any one of claims 1-6, comprising: A strategy configuration module, according to the positioning enhancement strategy, allocates independent positioning signal resources for multiple radio remote units for positioning the same terminal in the baseband processing unit, and synchronously allocates corresponding positioning signal resources for the terminal; the radio remote unit includes multiple radio remote units under the same cell extension unit or multiple radio remote units under different cell extension units; the positioning signal resource includes downlink positioning signal resource; uplink positioning signal resource; uplink and downlink positioning signal resource; A signal processing module configured in the downlink and / or uplink of the extension unit generates and inserts independent downlink positioning signals, and extracts and separates independent uplink positioning signals; A positioning processing module, based on the positioning enhancement strategy, obtains the positioning signal time difference and / or the signal strength of the transmission and reception between multiple radio remote units and the terminal; and calculates the terminal position according to the positioning signal time difference and / or the signal strength of the transmission and reception.

8. A computer storage medium, characterized in that, A computer program is stored thereon, which is executed by a processor to implement an extended mobile communication base station positioning enhancement method according to any one of claims 1-6.

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