Portable device positioning system and method based on CSI-RS measurement

Abstract

The invention discloses a portable device positioning system and method based on CSI-RS measurement, and belongs to the technical field of 5G network positioning, and the system comprises a signal sending module which is used for periodically sending channel state information reference signals; the signal receiving module is used for receiving a physical uplink control channel format 2 signal reported by the target terminal; the signal processing module is used for decoding a physical uplink control channel format 2 signal of the signal receiving module and extracting RS receiving power information; the data analysis module is used for converting the RS receiving power information extracted from the signal processing module into a display value; according to the portable equipment positioning system and method based on CSI-RS measurement, stable value reporting and positioning can be carried out on the target terminal under relatively low transmitting power; and under the condition of multiple targets, the problems of inter-UE interference and near-end saturation caused by the fact that all target terminals have the maximum transmitting power can be avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of 5G network positioning, and particularly relates to a positioning system and method for portable devices based on CSI-RS measurement. Background Art

[0002] Traditional positioning devices keep the uplink transmission power of the target terminal at the maximum and make the target terminal continuously transmit signals in the uplink. By measuring the signal strength RSSI value of the orthogonal frequency division multiplexing OFDM signal of the uplink signal of the target terminal, when the RSSI value of the signal strength in a certain direction is judged to be the maximum value, according to the direction and the maximum RSSI value of the signal strength, move to the next position in the corresponding direction to measure the signal strength RSSI value and judge the moving position, and determine the position of the target terminal by means of gradual approximation; for example, the application number is 202111495405.3, and the patent name is a terminal positioning device and positioning method for a 5G network. Existing positioning methods will consume a large amount of power of the target terminal, and the heat generated by the target terminal will attract the attention of users. Moreover, affected by different baseband implementation methods of terminals, the RSSI of the uplink signal will fluctuate during the random access process, resulting in misjudgment. And it is easier for users to judge the approximate distance between the target and the portable device based on RSRP, and precise positioning cannot be achieved. Therefore, it is necessary to develop a positioning system and method for portable devices based on CSI-RS measurement to solve the existing problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a positioning system and method for portable devices based on CSI-RS measurement to solve the problem of excessive transmission power of the target terminal when positioning the target terminal.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A positioning system for portable devices based on CSI-RS measurement, comprising: A signal sending module, configured to periodically send channel state information reference signals; A signal receiving module, configured to receive the physical uplink control channel format 2 signals reported by the target terminal; A signal processing module, configured to decode the physical uplink control channel format 2 signals of the signal receiving module to extract RS received power information; A data analysis module, configured to convert the RS received power information extracted by the signal processing module into a display value; A user interface module, configured to display the measurement result according to the display value converted by the data analysis module.

[0005] Preferably, extracting the RSRP information from the PUCCH Format 2 signal of the signal receiving module for decoding includes: the physical layer 1 parses out the uplink control information, and the portable device parses the UCI PUCCH format 2, 3, 4 PDUs to extract the information in the CSI part1 info to obtain the RS received power.

[0006] Preferably, the decoding includes: extracting bits 8 to 14 of the first data of the UCI signaling, and mapping the extracted data to L1 CSI-RSRP according to Table 10.1.6.1-1 in Chapter 10 of 3GPP 38.133.

[0007] Preferably, converting the RSRP information into a displayed value includes: adding 144 to the RS received power value to convert it into a positive value.

[0008] Preferably, the period for periodically transmitting the channel state information reference signal is 40 ms.

[0009] Preferably, the signal receiving module receives the physical uplink control channel format 2 signaling from the physical layer 1 and makes its cyclic redundancy check status detected.

[0010] The present invention further provides a method for positioning a portable device based on CSI-RS measurement, including: The portable device scans the public network; Configures the frequency point parameters according to the scanning result; The portable device turns on the radio frequency and broadcasts 5G signals; The target terminal is marked in the portable device; Starts scheduling CSI-RS and simultaneously turns on the reception of PUCCH UCI signaling; Processes the UCI signaling into a readable RS received power; The APP simultaneously displays the RS received power and the processed numerical value range from 0 to 100; Identifies the direction and determines the target terminal based on the displayed data.

[0011] The technical effects and advantages of the present invention are as follows: the portable device positioning system and method based on CSI-RS measurement configures the resource indication of the target channel state information reference signal in RRCSETUP, triggers the target terminal to measure the target CSI-RS, and receives the CSI-RSRP measurement information reported by the target terminal; the target terminal adopts closed-loop power control, and does not need to adopt maximum power transmission, and reports the downlink RSRP of CSI-RS in real time; the target terminal performs stable reporting and positioning at a relatively low transmission power; the 5G portable device can locate the target terminal at a relatively low transmission power of the target terminal, and in the case of multiple targets, it can avoid the UE-to-UE interference and near-end saturation problems caused by the maximum transmission power of all target terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a block diagram of the system principle of the present invention; Figure 2 It is a schematic diagram of the process of the present invention; Figure 3 This is a schematic diagram of the operating interface of the system of the present invention; Figure 4 This is a signaling flow chart of the system of the present invention. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] The present invention provides Figure 1 , Figure 4 A portable device positioning system based on CSI-RS measurement as shown in the figure includes the following modules: Signal sending module: used to periodically send channel state information reference signal.

[0015] Signal transmitting device: Sends a channel state information reference signal every 40 ms to ensure that the target terminal can receive high-quality downlink signals.

[0016] After the target terminal initiates an attach request to the portable device base station, the portable device base station configures CSI-RS in the RRCSetup sent down. Different target terminals are configured with different resource locations and periodic reporting periods.

[0017] Signal receiving module: used to receive the PUCCH Format 2 signal reported by the target terminal.

[0018] Signal receiving device: Physical uplink control channel format 2 signaling at physical layer 1, making its cyclic redundancy check status detected. The portable positioning device adjusts resource allocation and PUCCH channel power to achieve a signaling status of correct.

[0019] Signal decoding: Decode the received signal and extract UCI Format2 related information. Obtain the field length and content in the UCI Info Pdu for decoding.

[0020] Signal processing module: Decode and process the received signal to extract RSRP information. It is used to process the received UCI signaling and extract RSRP information.

[0021] Decoding algorithm: Parse according to 3GPP 38.133 Table 10.1.6.1-1, extract bits 8 to 14 of the first data of UCI info, and map the extracted data to L1CSI-RSRP according to Table 10.1.6.1-1 in Chapter 10 of 3GPP 38.133; 3GPP 38.133 Table 10.1.6.1-1 is a 5G 3GPP standard file. Data analysis module: Further convert the extracted RSRP information into a display value. It is responsible for statistically analyzing the extracted RSRP information and generating user-readable data.

[0022] Statistical algorithm: As stipulated in 3GPP 38.133 10.1.6, the range of L1 reported CSI-RSRP is -140 to -44dBm, with each value incrementing by one, while the APP customer reporting value habit is 0 - 100. Therefore, it is necessary to convert it into a display value or a common value; the APP side displays the value after adding 44 to the RSRP reported by the portable device.

[0023] User interface module: As Figure 3 shown, provide a friendly user interface to enable users to conveniently view the measurement results. Provide a friendly user interface to enable users to conveniently view the measurement results and performance reports; it mainly includes the following aspects: Interface design: Design a simple and clear user interface to ensure that users can easily get started. Interaction function: Provide rich charts to facilitate users to view and analyze the measurement results.

[0024] The present invention provides a portable device positioning method based on CSI-RS measurement, as Figure 2 shown, including: The portable device scans the public network. Configure frequency point parameters according to the scan results. The portable device turns on the radio frequency and broadcasts a 5G signal; The target terminal is marked in the portable device; being marked means that the target terminal is collected by the portable device and continuously adsorbed and scheduled without release; Start scheduling CSI-RS and at the same time turn on the reception of PUCCH UCI signaling; Process the UCI signaling into readable RSRP; The APP simultaneously displays the RSRP and the processed numerical value range from 0 to 100 for data display; Identify the direction and determine the target terminal based on the displayed data.

[0025] The innovation of this application lies in that the conventional positioning method is to let the mobile phone transmit at the maximum uplink power, and the portable device evaluates the received power of the uplink channel PUSCH for positioning the target. While this solution is to let the target terminal periodically report the RSRP of the downlink CSI-RS to evaluate the distance between the target and the portable device.

[0026] The difference from the mobile public network is that the scheduling of CSI information in the mobile public network is after the target terminal completes authentication, and in this invention, the periodic reporting of CSI parameters is configured in RRC Setup.

[0027] The portable device positioning system and method based on CSI-RS measurement configures the resource indication of the target channel state information reference signal in RRC SETUP, triggers the target terminal to measure the target CSI-RS, and receives the CSI-RSRP measurement information reported by the target terminal; the target terminal adopts closed-loop power control, does not need to transmit at the maximum power, and reports the downlink RSRP of CSI-RS in real time; it enables the target terminal to perform stable value reporting positioning at a relatively low transmission power; the 5G portable terminal positioning device, that is, the portable device, can locate the target terminal at a relatively low transmission power of the target terminal, and can avoid the UE-to-UE interference and proximal saturation problems caused by all target terminals transmitting at the maximum power in the case of multiple targets.

[0028] Abbreviations, full names and Chinese translations in this application: CRC Cyclic Redundancy Check Cyclic Redundancy Check CSI Channel State Information Channel State Information CSI-RS Channel State Information-Reference Signal Channel State Information-Reference Signal RS Reference Signal Reference Signal RSRP RS Received Power RS Received Power RRC Radio Resource Control Radio Resource Control NR New Radio New Radio PUCCH Format2 Physical Uplink Control Channel Format2 Physical Uplink Control Channel Format2 PUCCH Physical Uplink Control Channel Physical Uplink Control Channel CrcStatus Cyclic Redundancy Check Status Cyclic Redundancy Check Status RSSI Received Signal Strength Indication Received Signal Strength Indication UCI Uplink Control Information Uplink Control Information UE User Equipment User Equipment UL Uplink Uplink uciDetected Uplink Control Information Detected Uplink Control Information Detected Pdu Protocol Data Unit Protocol Data Unit CSI part1 info CSI part1 info Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A portable device positioning system based on CSI-RS measurement, characterized in that: include: A signal sending module, used for periodically sending a channel state information reference signal; A signal receiving module, used to receive a physical uplink control channel format 2 signal reported by a target terminal; A signal processing module, used for decoding the physical uplink control channel format 2 signal of the signal receiving module to extract RS receiving power information; A data analysis module, used to convert the RS received power information extracted from the signal processing module into a display value; The user interface module is used to display the measurement results according to the display values ​​converted by the data analysis module.

2. A portable device positioning system based on CSI-RS measurement according to claim 1, characterized in that: The decoding of the physical uplink control channel format 2 signal of the signal receiving module to extract RS receiving power information includes: the physical layer 1 parses the uplink control information, and the portable device parses the CSI part1 info information in the UCI PUCCH format 2, 3, 4 PDU to extract RS receiving power.

3. A portable device positioning system based on CSI-RS measurement according to claim 2, characterized in that: The decoding includes: extracting 8 to 14 bits of the first data of the UCI signaling, and mapping the extracted data to L1 CSI-RSRP according to Table 10.1.6.1-1 of Chapter 10 of 3GPP 38.

133.

4. The portable device positioning system based on CSI-RS measurement according to claim 1, characterized in that: The period for periodically sending the channel state information reference signal is 40 ms.

5. The portable device positioning system based on CSI-RS measurement according to claim 1, characterized in that: The signal receiving module receives the physical uplink control channel format 2 signaling of the physical layer 1, and sets its cyclic redundancy check state to detected.

6. The portable device positioning system based on CSI-RS measurement according to claim 1, characterized in that: The RS receiving power information is converted into a display value including: adding 144 to the RS receiving power value to convert it into a positive value.

7. A positioning method for a portable device positioning system based on CSI-RS measurement according to any one of claims 1 to 6, characterized in that: include: Portable devices scan the public network; Configure frequency parameters according to the scanning results; The portable device turns on the radio frequency and broadcasts the 5G signal; The target terminal won the bid in portable devices; Start scheduling CSI-RS and start receiving PUCCH UCI signaling; Process UCI signaling into readable RS received power; Displays RS received power and processed data with a value range of 0 to 100; According to the displayed data, the direction is identified and the target terminal is determined.

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