Micro-amplification power control method, device and micro-amplification processing equipment

Abstract

The embodiment of the present invention provides a micro-amplification power control method, device and micro-amplification processing equipment. The method includes: detecting a synchronization signal and a physical broadcast channel block (SSB) signal; performing a residency in a private network cell according to the physical cell identifier (PCI) carried by the SSB signal and a pre-stored physical cell identifier lookup table; wherein the physical cell identifier lookup table sequentially stores the PCI of each private network cell on the private network line; after residing in the private network cell, detecting the reference signal received power (RSRP) of the private network cell, and outputting the detected RSRP to a power control unit for downlink power control output. This method can solve the problems of high-speed train signal power control in the prior art, such as large power adjustment errors, frequent and unstable adjustments, and insufficient accuracy.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a micro-amplification power control method, device and micro-amplification processing equipment. Background Art

[0002] To improve signal coverage within high-speed trains, existing technology uses a multi-stage cascaded micro-amplifier to amplify and transmit signals within the train. Each stage of the micro-amplifier uses a modem to demodulate the time slot transitions of uplink and downlink frames to control the RF link's transmit and receive switching, and detects the received signal strength indicator (RSSI) to control the uplink and downlink power of the micro-amplifier.

[0003] Because public and private network signals currently use the same frequency for transmission coverage, the signals received by the micro-amplifier include not only the private high-speed rail signal, but also the same-frequency public network signal near the railway and various interference signals. Modems also frequently switch between public and private cell areas along the high-speed rail line. Because RSSI fluctuates significantly with changes in surrounding signal coverage and geographical conditions (such as tunnels), using only RSSI for RF link power control results in large errors in effective power adjustment. Furthermore, frequent power amplifier adjustments can lead to unstable and inaccurate adjustments. Furthermore, frequent switching can affect system stability and increase hardware circuit power consumption.

[0004] In addition, for high-speed rail tunnel scenarios, when entering the tunnel, there will be a problem of a sudden decrease in signal strength due to insufficient coverage, and the micro-amplification synchronization module will suddenly drop offline, and the entire micro-amplification may work abnormally. Summary of the Invention

[0005] The technical solution of the present invention aims to provide a micro-amplification power control method, device and micro-amplification processing equipment to solve the problems of high-speed train signal power control in the prior art, such as large power adjustment error, frequent and unstable adjustment and insufficient accuracy.

[0006] One embodiment of the present invention provides a micro-amplification power control method, wherein the method includes:

[0007] Detect synchronization signal and physical broadcast channel block SSB signal;

[0008] Reside in a private network cell according to the physical cell identifier PCI carried by the SSB signal and a pre-stored physical cell identifier lookup table, wherein the physical cell identifier lookup table sequentially stores the PCI of each private network cell on the private network line;

[0009] After camping on a private network cell, the reference signal received power RSRP of the private network cell is detected, and the detected RSRP is output to a power control unit for downlink power control output.

[0010] Optionally, the micro-amplification power control method, wherein the stationing in a private network cell is performed according to the physical cell identifier PCI carried by the SSB signal and a pre-stored physical cell identifier lookup table, includes:

[0011] Searching the physical cell identifier lookup table according to the PCI carried by the SSB signal, and determining whether the physical cell identifier lookup table includes the PCI carried by the SSB signal;

[0012] When the physical cell identifier lookup table includes the PCI carried by the SSB signal, it is determined that the cell can reside in the private network cell.

[0013] Optionally, in the micro-amplification power control method, after camping on a private network cell, the method further includes:

[0014] Determine a first position of a PCI in the physical cell identifier lookup table that is identical to the PCI carried by the SSB signal;

[0015] Generate a first PCI search reference set according to the first position; wherein the first PCI search reference set includes N PCIs adjacent to the first position and sorted before the first position and N PCIs sorted after the first position; N is a positive integer;

[0016] The private network cell is synchronized according to the first PCI search reference set, the physical cell identifier lookup table and the PCI carried by the SSB signal detected after residing in the private network cell.

[0017] Optionally, the micro-amplification power control method, wherein synchronization of the private network cell is performed according to the first PCI search reference set, the physical cell identifier lookup table, and the PCI carried by the SSB signal detected after residing in the private network cell, includes:

[0018] After residing in the private network cell, obtain the PCI carried by the re-detected SSB signal;

[0019] determining whether the PCI carried by the re-detected SSB signal is in the first PCI search reference set;

[0020] If the PCI carried by the re-detected SSB signal is in the first PCI search reference set, then synchronize to the private network cell corresponding to the PCI carried by the re-detected SSB signal.

[0021] Optionally, the micro-amplification power control method further comprises:

[0022] If the PCI carried by the re-detected SSB signal is located in the first PCI search reference set, generating a second PCI search reference set according to the second position of the PCI carried by the re-detected SSB signal in the first PCI search reference set;

[0023] The second PCI search reference set includes N PCIs adjacent to the second position and sorted before the second position and N PCIs sorted after the second position.

[0024] Optionally, the micro-amplification power control method, wherein the detected RSRP is output to a power control unit, includes:

[0025] After the private network resides successfully, during the synchronization process after residing in the private network cell, the detected RSRP is output to the power control unit.

[0026] An embodiment of the present invention further provides a micro-amplification power control method, wherein the method includes:

[0027] After the micro-amp resides in the private network cell, the first received signal strength indication RSSI of the received downlink signal and the reference signal received power RSRP of the private network cell are obtained in the downlink frame time slot;

[0028] The power of the first RSSI and the RSRP are compared to determine a downlink power adjustment amount.

[0029] Optionally, the micro-amplification power control method further comprises:

[0030] During the private network cell search process of the micro amplifier, a second received signal strength indicator RSSI of the received downlink signal is obtained in the downlink frame time slot;

[0031] A downlink power adjustment amount is determined according to the power of the second RSSI.

[0032] Optionally, the micro-amplification power control method, wherein the comparing the power of the first RSSI and the RSRP to determine the downlink power adjustment amount, includes:

[0033] Obtain a first difference between the power of the first RSSI and a first target power, and a second difference between the RSRP and a second target power;

[0034] The downlink power adjustment amount is determined according to the comparison results of the first difference and the second difference with the maximum adjustable power range respectively.

[0035] Optionally, in the micro-amplification power control method, determining the downlink power adjustment amount based on comparison results of the first difference and the second difference with the maximum adjustable power range, includes at least one of the following:

[0036] When the first difference is greater than or equal to the maximum adjustable power range, and the second difference is greater than the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the maximum adjustable power range;

[0037] When the first difference is greater than or equal to the maximum adjustable power range, and the second difference is less than the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the second difference;

[0038] When the first difference is less than the maximum adjustable power range and the second difference is greater than or equal to the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the first difference;

[0039] When the first difference is smaller than the maximum adjustable power range and the second difference is smaller than the maximum adjustable power range, the downlink power adjustment amount is determined to be equal to the minimum value of the first difference and the second difference.

[0040] Optionally, the micro-amplification power control method, wherein determining the downlink power adjustment amount according to the power of the second RSSI, includes:

[0041] Obtain a first difference between the power of the second RSSI and the first target power;

[0042] A downlink power adjustment amount is determined according to a comparison result of the first difference and the maximum adjustable power range.

[0043] Optionally, in the micro-amplification power control method, determining the downlink power adjustment amount based on a comparison result of the first difference and the maximum adjustable power range includes at least one of the following:

[0044] When the first difference is greater than or equal to the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the maximum adjustable power range;

[0045] When the first difference is smaller than the maximum adjustable power range, the downlink power adjustment amount is determined to be equal to the first difference.

[0046] One embodiment of the present invention further provides a micro-amplification power control device, wherein the device includes:

[0047] A detection module, configured to detect a synchronization signal and a physical broadcast channel block SSB signal;

[0048] A search module is configured to reside in a private network cell based on a physical cell identifier PCI carried by the SSB signal and a pre-stored physical cell identifier lookup table, wherein the physical cell identifier lookup table sequentially stores the PCI of each private network cell on the private network line;

[0049] The output module is used to detect the reference signal received power RSRP of the private network cell after camping on the private network cell, and output the detected RSRP to the power control unit for downlink power control output.

[0050] Another embodiment of the present invention further provides a micro-amplification power control device, wherein the device includes:

[0051] A signal acquisition module is used to obtain the first received signal strength indication RSSI of the received downlink signal and the reference signal received power RSRP of the private network cell in the downlink frame time slot after the micro amplifier resides in the private network cell;

[0052] An analysis module is configured to compare the power of the first RSSI with the RSRP to determine a downlink power adjustment amount.

[0053] One embodiment of the present invention further provides a micro-amplification processing device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the micro-amplification power control method as described in any one of the above items.

[0054] One embodiment of the present invention further provides a readable storage medium, wherein the readable storage medium stores a program, and when the program is executed by a processor, the steps of any of the above methods for controlling micro-amplification power are implemented.

[0055] At least one of the above technical solutions of the present invention has the following beneficial effects:

[0056] The micro-amplification power control method described in the embodiment of the present invention prioritizes PCI search of the private network cell based on the detected SSB signal, allowing the train's micro-amplification to effectively reside in the private network signal cell, avoiding frequent switching between the private network and the public network and interference from other nearby networks. In addition, by detecting the downlink reference signal received power (RSRP) of the private network for downlink power adjustment, the impact of the public network signal on the micro-amplification can be effectively reduced, ensuring the accuracy of power adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 This is a schematic diagram of the micro-amplification power control process using the method of the present invention;

[0058] Figure 2 1 is a flow chart of a micro-amplification power control method according to one embodiment of the present invention;

[0059] Figure 3 To illustrate the initial search process and synchronization process when residing in a private network cell when using the micro-amplification power control method according to an embodiment of the present invention;

[0060] Figure 4 1 is a flow chart of a micro-amplification power control method according to another embodiment of the present invention;

[0061] Figure 5 This is a schematic structural diagram of a micro-amplification power control device according to one embodiment of the present invention;

[0062] Figure 6 Schematic diagram of the structure of a micro-amplification power control device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0063] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0064] In order to solve the problems of large power adjustment errors, frequent and unstable adjustments, and insufficient accuracy in the existing high-speed train signal power control technology, an embodiment of the present invention provides a micro-amplification power control method. According to the detected SSB signal, the PCI of the private network cell is preferentially searched, so that the train's micro-amplification can effectively reside in the private network signal cell, avoiding frequent switching between the private network and the public network and interference from other nearby networks; in addition, by detecting the downlink reference signal received power RSRP of the private network for downlink power adjustment, it can effectively reduce the impact of the public network signal on the micro-amplification and ensure the accuracy of power adjustment.

[0065] In order to clearly illustrate the micro-amplification power control method according to the embodiment of the present invention, Figure 1 , firstly, the micro-amplification power control process using the method of the present invention is described.

[0066] See Figure 1 As shown, signal coverage on high-speed trains currently utilizes a multi-stage cascaded micro-amplification system for internal signal amplification and transmission. In each stage of the micro-amplification structure, the RF link connected to antenna unit 1 is sequentially connected to a coupling element 2, a first duplexer 3, a transmitting unit 4, a receiving unit 5, and a second duplexer 6. Within each stage of the micro-amplification, a modem 7 is connected to coupling element 2 to demodulate the time slot variations of uplink and downlink frames and transmit the demodulated time slots to a power control unit MCU 8 to control the transmission and reception switching of the RF link.

[0067] In addition, in this embodiment of the present invention, the micro-amplification structure further includes a root mean square (RMS) detector 9 for detecting the received signal strength indicator (RSSI) of the received signal and sending the detected RSSI to the MCU 8 for use in adjusting the power of uplink and downlink signals. Furthermore, the modem 7 is further configured to prioritize PCI lookups of private network cells based on the detected SSB signal and to detect the private network's downlink reference signal received power (RSRP) for use in downlink signal power adjustment.

[0068] See Figure 2 As shown, one embodiment of the present invention provides a micro-amplification power control method, optionally, the method is applied to Figure 1 The modem 7 shown, the method includes:

[0069] S210, detecting a synchronization signal and a physical broadcast channel block SSB signal;

[0070] S220, performing residency on a private network cell based on a physical cell identifier PCI carried by the SSB signal and a pre-stored physical cell identifier lookup table, wherein the physical cell identifier lookup table sequentially stores the PCI of each private network cell on the private network line;

[0071] S230: After camping on the private network cell, detect the downlink reference signal received power RSRP of the private network cell, and output the detected RSRP to the power control unit for downlink power control output.

[0072] Using the method described in this embodiment, a physical cell identifier lookup table is added to the modem. This physical cell identifier lookup table sequentially stores the physical cell identifier (PCI) of each private network cell on the private network line. When detecting synchronization signals and physical broadcast channel block (SSB) signals, the PCI information of the cell can be extracted. The private network cell is selected for resident selection by searching the physical cell identifier lookup table, and the downlink reference signal received power (RSRP) of the private network cell is detected and output to the power control unit MCU for downlink power control output. Specifically, the modem outputs the RSRP value corresponding to the private network PCI determined by the received SSB to the MCU for power adjustment decision.

[0073] Optionally, the MCU calculates an appropriate power adjustment amount for the power amplifier based on the RSSI value and RSRP value, as well as an indication of the current modem stage, through a series of judgment criteria, to perform link power adjustment.

[0074] Optionally, in step S220, residing in a private network cell according to the physical cell identifier PCI carried by the SSB signal and a pre-stored physical cell identifier lookup table includes:

[0075] Searching the physical cell identifier lookup table according to the PCI carried by the SSB signal, and determining whether the physical cell identifier lookup table includes the PCI carried by the SSB signal;

[0076] When the physical cell identifier lookup table includes the PCI carried by the SSB signal, it is determined that the cell can reside in the private network cell.

[0077] In the embodiment of the present invention, optionally, the above process may be referred to as a preliminary search process, which requires searching the entire physical cell identifier lookup table to determine whether it is possible to reside in a private network cell.

[0078] Optionally, the micro-amplification power control method according to the embodiment of the present invention further includes, after camping on a private network cell:

[0079] Determine a first position of a PCI in the physical cell identifier lookup table that is identical to the PCI carried by the SSB signal;

[0080] Generate a first PCI search reference set according to the first position; wherein the first PCI search reference set includes N PCIs adjacent to the first position and sorted before the first position and N PCIs sorted after the first position; N is a positive integer;

[0081] The private network cell is synchronized according to the first PCI search reference set, the physical cell identifier lookup table and the PCI carried by the SSB signal detected after residing in the private network cell.

[0082] In an embodiment of the present invention, optionally, the above process can be called a synchronization process, and the private network cell is synchronized according to the detected new SSB signal.

[0083] Synchronizing the private network cell according to the first PCI search reference set, the physical cell identifier lookup table, and the PCI carried by the SSB signal detected after residing in the private network cell, including:

[0084] After residing in the private network cell, obtain the PCI carried by the re-detected SSB signal;

[0085] determining whether the PCI carried by the re-detected SSB signal is in the first PCI search reference set;

[0086] If the PCI carried by the re-detected SSB signal is in the first PCI search reference set, then synchronize to the private network cell corresponding to the PCI carried by the re-detected SSB signal.

[0087] Optionally, the method further includes:

[0088] If the PCI carried by the re-detected SSB signal is located in the first PCI search reference set, generating a second PCI search reference set according to the second position of the PCI carried by the re-detected SSB signal in the first PCI search reference set;

[0089] The second PCI search reference set includes N PCIs adjacent to the second position and sorted before the second position and N PCIs sorted after the second position.

[0090] The micro-amplification power control method described in the embodiment of the present invention takes into account the situation where different values ​​in the same group of PCIs are reused in different SSB signals. In order to accurately identify the private network signal to which each SSB signal belongs during the travel of the high-speed train, through the above-mentioned initial search process and synchronization process, after the physical cell identifier lookup table is searched for the first time and the private network cell is successfully resided, a first PCI search reference set is generated to record the first position of the PCI in the received SSB signal in the physical cell identifier lookup table, as well as the N PCIs before and after the corresponding first position; after receiving the new SSB again, it is necessary to search based on the first PCI search reference set to determine whether it is located in the N neighboring cells to the left and right of the previous PCI search position, that is, to determine whether it is located in the first PCI search reference set; if so, it is determined to have entered a new private network cell, and the PCI position of the new SSB is used as the reference position for the next PCI judgment, that is, to generate a second PCI search reference set. Similarly, after the private network cell is successfully resided, during the residency process of the private network cell, the position is determined each time based on the PCI in the received SSB and the PCI search reference set generated by the last PCI search, so as to accurately identify the new private network cell.

[0091] Combine Figure 3 and Figure 1 As shown, the initial search process and synchronization process when residing in a private network cell when using the micro-amplification power control method according to an embodiment of the present invention are described in detail. Specifically, the process includes:

[0092] S301, detecting an SSB signal;

[0093] S302, parsing the PCI in the SSB signal;

[0094] S303, generating an uplink and downlink subframe switching signal and outputting PCI;

[0095] S304, the synchronization signal is output to the RMS detector, the RSSI is calculated, and the RSSI is output to the MCU, so that the MCU calculates the downlink power adjustment amount output by the downlink power control according to the received MCU;

[0096] S305, executed simultaneously with step S304, the modem performs an initial search of a physical cell identifier lookup table, wherein the physical cell identifier lookup table sequentially stores the PCI of each private network cell on the private network line. The PCI of the private network line is provided in advance based on the engineering parameters;

[0097] S306: Determine whether the physical cell identifier lookup table includes the PCI carried by the SSB signal, that is, determine whether the PCI corresponding to the currently detected SSB signal belongs to the PCI of the private network line; if the judgment result is yes, execute steps S307 and S308; if the judgment result is no, return to step S301;

[0098] S307: Determining that the private network residency is successful, the modem detects RSRP and outputs the detected RSRP to the MCU; at this time, the MCU calculates the downlink power adjustment amount output by the downlink power control based on the received RSSI and RSRP;

[0099] S308: The modem records the first position of the PCI in the physical cell identifier lookup table and generates a first PCI search reference set; wherein the first PCI search reference set includes N PCIs adjacent to the first position and sorted before the first position and N PCIs sorted after the first position; N is a positive integer;

[0100] Since there may be multiple identical PCI values ​​in the first PCI search benchmark set, it is necessary to record the first position of all the identical PCI values ​​searched for in the physical cell identifier lookup table, and determine the N PCIs adjacent to the first position and sorted before the first position and the N PCIs sorted after the first position, to facilitate the search for the PCI residing in the private network.

[0101] For example, the physical cell identifier lookup table can be expressed as:

[0102] PCI_LUT=[...PCI m-1 ,PCI m ,PCI m+1 ,...,PCIn-1 ,PCI n ,PCI n+1 ,...,PCI k-1 ,PCI k ,PCI k+1 ,..].

[0103] When performing the first search:

[0104] PCI 搜索集合 =PCI_LUT;

[0105] If PCI 第一次搜索 =PCI m =PCI n =....;

[0106] PCI 基准 =(PCI m , PCI n ,....,), the first PCI search benchmark set generated after the first search is:

[0107] PCI 第一PCI搜索基准集合 =[PCI m-N , PCI m , PCI m+N ;PCI n-N , PCI n , PCI n+N ,...,].

[0108] According to the above process, the initial search process of the private network is completed, the synchronization process is entered, and the subsequent step S309 is continued;

[0109] S309, acquiring the SSB signal detected again, and executing S307 according to the detected SSB signal;

[0110] S310, parsing the PCI in the re-detected SSB signal;

[0111] S311, generating and outputting the uplink and downlink subframe switching signal PCI, and executing S304, causing the MCU to calculate the downlink power adjustment amount output by the downlink power control according to the received RSSI and RSRP;

[0112] S312: Determine whether the PCI carried by the re-detected SSB signal is in the first PCI search reference set; if so, feedback information indicating successful new cell residency is sent to the MCU, and execute step S313; otherwise, return to step S309;

[0113] S313 : Generate a second PCI search reference set according to the position of the PCI carried by the re-detected SSB signal in the first PCI search reference set.

[0114] The second PCI search reference set is generated in the same manner as the first PCI search reference set, and will not be described in detail here.

[0115] Similarly, for SSB signals detected again subsequently, the search for PCI is analogous, and the PCI search reference set generated by the previous search is used to determine the location of the private network cell corresponding to the PCI.

[0116] The micro-amplification power control method described in the embodiment of the present invention outputs the detected RSRP to the power control unit during the synchronization process after successfully camping on the private network cell.

[0117] This method, using a pre-built physical cell ID lookup table, enables the micro-amplifier to effectively select and reside in a private network cell and output a valid private network RSRP value for use by the amplifier. It should be noted that this private network residency lookup table method is also applicable to other application scenarios that require special private network residency.

[0118] With the micro-amplification power control method described in an embodiment of the present invention, during the private network cell search process, the MCU calculates the downlink power adjustment value of the downlink power control output based on the RSSI. During the synchronization process after residing in the private network cell, the downlink power adjustment value of the downlink power control output is calculated in combination with the RSSI and the private network RSRP. This effectively solves the power adjustment fluctuation under public network signal interference and ensures that the power amplifier operates reasonably and stably without self-excitation.

[0119] Therefore, another embodiment of the present invention further provides a micro-amplification power control method, such as Figure 4 As shown, the method includes:

[0120] S410, after the micro-amplifier resides in the private network cell, obtaining a first received signal strength indicator RSSI of the received downlink signal and a reference signal received power RSRP of the private network cell in a downlink frame time slot;

[0121] S420: Compare the power of the first RSSI and the RSRP to determine a downlink power adjustment amount.

[0122] Using the micro-amplifier power control method described in this embodiment, the MCU compares the received signal power RSSI output by the RMS detector and the private network RSRP output by the modem, and makes an effective decision based on the target power and the maximum adjustable range of the power amplifier, outputting the appropriate power adjustment amount to the power amplifier. This ensures that the power amplifier is not saturated under large signals and simultaneously ensures stable operation of the power amplifier on the high-speed rail line.

[0123] Compared to existing technologies that use only RSSI signals for power adjustment, RSSI includes both public and private network signals, as well as interference signals. Existing technologies that use RSSI values ​​for power adjustment lack reliability and stability, and cannot guarantee stable and effective micro-amplification. The method described in this embodiment combines RSSI and private network RSRP for comparison, enabling more accurate downlink power amplifier control and effectively reducing the impact of interference signals.

[0124] Optionally, the method further includes:

[0125] During the private network cell search process, obtaining a second received signal strength indicator RSSI of the received downlink signal in a downlink frame time slot;

[0126] A downlink power adjustment amount is determined according to the power of the second RSSI.

[0127] In the embodiment of the present invention, in step S420, comparing the power of the first RSSI and the RSRP to determine the downlink power adjustment amount includes:

[0128] Obtaining a first difference between the first RSSI and a first target power, and a second difference between the RSRP and a second target power;

[0129] The downlink power adjustment amount is determined according to the comparison results of the first difference and the second difference with the maximum adjustable power range respectively.

[0130] Optionally, determining the downlink power adjustment amount according to comparison results of the first difference and the second difference with the maximum adjustable power range respectively includes at least one of the following:

[0131] When the first difference is greater than or equal to the maximum adjustable power range, and the second difference is greater than the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the maximum adjustable power range;

[0132] When the first difference is greater than or equal to the maximum adjustable power range, and the second difference is less than the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the second difference;

[0133] When the first difference is less than the maximum adjustable power range and the second difference is greater than or equal to the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the first difference;

[0134] When the first difference is smaller than the maximum adjustable power range and the second difference is smaller than the maximum adjustable power range, the downlink power adjustment amount is determined to be equal to the minimum value of the first difference and the second difference.

[0135] Specifically, in the synchronization process after the stationing in the private network cell, the above-mentioned method is adopted to determine the downlink power adjustment amount by comparing the power of the first RSSI and the RSRP. That is, the first RSSI and RSRP are used simultaneously for power control. The specific determination method can be:

[0136] Set the difference between the first RSSI and the first target power P0 to be the first difference Δ1, that is, Δ1 = P0-P RSSI ;

[0137] RSRP and the second target power P 01 The difference is the second difference Δ2, Δ2 = P 01 -P PSRP That is, it should be noted that, due to the different calculation criteria of power based on RSSI and RSRP, the corresponding first target power P0 and second target power P 01 different.

[0138] Where: P RSRP is the power of the detected RSRP; P RSSI is the power of the first RSSI detected;

[0139] 1) If Δ1≥Δ max , Δ2>Δ max , indicating that P RSSI and P RSRP Both Δ1 and Δ2 are too large, exceeding the maximum adjustable power range Δ max , then determine the downlink power adjustment amount Δ 调 =Δ max ;

[0140] 2) If Δ1≥Δ max , Δ2<Δ max , indicating that P RSSI Too small, and P RSRP Moderate, Δ1 exceeds the maximum adjustable power range Δ max , and Δ2 does not exceed the maximum adjustable power range Δ max , then determine the downlink power adjustment amount Δ 调 =Δ2;

[0141] 3) If Δ1<Δ max , Δ2≥Δ max , indicating that P RSSI Moderate and P RSRP Too small, Δ2 exceeds the maximum adjustable power range Δ max , then determine the downlink power adjustment amount Δ 调 =Δ1;

[0142] 4) If Δ1<Δ max , Δ2<Δmax , indicating that P RSSI and P RSRP Both Δ1 and Δ2 do not exceed the maximum adjustable power range Δ max , then determine the downlink power adjustment amount Δ 调 =min(Δ1,Δ2).

[0143] The method described in the embodiment of the present invention may optionally determine the downlink power adjustment amount according to the second RSSI of the received downlink signal during the search for the private network cell.

[0144] Optionally, determining a downlink power adjustment amount according to the second RSSI includes:

[0145] Obtain a first difference between the power of the second RSSI and the first target power;

[0146] A downlink power adjustment amount is determined according to a comparison result of the first difference and the maximum adjustable power range.

[0147] Optionally, determining the downlink power adjustment amount according to a comparison result of the first difference and the maximum adjustable power range includes at least one of the following:

[0148] When the first difference is greater than or equal to the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the maximum adjustable power range;

[0149] When the first difference is smaller than the maximum adjustable power range, the downlink power adjustment amount is determined to be equal to the first difference.

[0150] That is, during the search phase, only the RSSI value is used for power control to determine the downlink power adjustment amount. The specific determination method can be:

[0151] Assume that the first difference between the second RSSI and the first target power P0 is Δ1, that is: Δ1 = P0-P RSSI :

[0152] Where: P RSSI is the power of the second RSSI detected;

[0153] 1) If Δ1≥Δ max , indicating that P RSSI Too small, Δ1 is too large, exceeding the maximum adjustable power range Δ max , then the maximum adjustment can only be Δ max , that is, determine the downlink power adjustment amount Δ 调 =Δ max ;

[0154] 2) If Δ1<Δ max , indicating that P RSSIModerate, Δ1 does not exceed the maximum adjustable power range Δ max , then determine the downlink power adjustment amount Δ 调 =Δ1.

[0155] With the power control method for a micro-amplifier described in an embodiment of the present invention, different methods are used for uplink and downlink power control, respectively. The above method can be applied to downlink power adjustment of the power amplifier. By effectively detecting and judging the private network signal in the received signal, and jointly performing power control based on the received signal strength RSSI and the private network reference signal received power RSRP, downlink power adjustment is performed. Uplink power adjustment can also still be based on the usual power adjustment method, using only RSSI for adjustment.

[0156] The micro-amplifier power adjustment method described in an embodiment of the present invention, by setting a physical cell identifier lookup table for private network cells and performing cell PCI search, judgment, and training, ensures that the micro-amplifier resides in the private network cell as much as possible, avoiding frequent switching between public and private network cells, ensuring continuous private network residency in tunnel scenarios, avoiding interference from nearby networks, and ensuring that the micro-amplifier does not drop out when the tunnel private network has continuous coverage. By utilizing RSSI and RSRP for joint power control, it can effectively resolve power adjustment fluctuations under public network signal interference, reasonably and effectively amplify signal power, enhance the robustness of downlink power control, and ensure that the power amplifier operates reasonably and stably without self-excitation.

[0157] Another embodiment of the present invention provides a micro-amplification power control device, such as Figure 5 As shown, the device includes:

[0158] A detection module 510 is configured to detect a synchronization signal and a physical broadcast channel block (SSB) signal;

[0159] A search module 520 is configured to reside in a private network cell based on the physical cell identifier PCI carried by the SSB signal and a pre-stored physical cell identifier lookup table, wherein the physical cell identifier lookup table sequentially stores the PCI of each private network cell on the private network line;

[0160] The output module 530 is used to detect the reference signal received power RSRP of the private network cell after camping on the private network cell, and output the detected RSRP to the power control unit for downlink power control output.

[0161] Optionally, in the micro-amplification power control device, the search module 520 performs residency on a private network cell according to the physical cell identifier PCI carried by the SSB signal and a pre-stored physical cell identifier lookup table, including:

[0162] Searching the physical cell identifier lookup table according to the PCI carried by the SSB signal, and determining whether the physical cell identifier lookup table includes the PCI carried by the SSB signal;

[0163] When the physical cell identifier lookup table includes the PCI carried by the SSB signal, it is determined that the cell can reside in the private network cell.

[0164] Optionally, in the micro-amplification power control device, after camping on the private network cell, the search module 520 is further configured to:

[0165] Determine a first position of a PCI in the physical cell identifier lookup table that is identical to the PCI carried by the SSB signal;

[0166] Generate a first PCI search reference set according to the first position; wherein the first PCI search reference set includes N PCIs adjacent to the first position and sorted before the first position and N PCIs sorted after the first position; N is a positive integer;

[0167] The private network cell is synchronized according to the first PCI search reference set, the physical cell identifier lookup table and the PCI carried by the SSB signal detected after residing in the private network cell.

[0168] Optionally, in the micro-amplification power control device, the search module 520 performs synchronization of the private network cell according to the first PCI search reference set, the physical cell identifier lookup table, and the PCI carried by the SSB signal detected after residing in the private network cell, including:

[0169] After residing in the private network cell, obtain the PCI carried by the re-detected SSB signal;

[0170] determining whether the PCI carried by the re-detected SSB signal is in the first PCI search reference set;

[0171] If the PCI carried by the re-detected SSB signal is in the first PCI search reference set, then synchronize to the private network cell corresponding to the PCI carried by the re-detected SSB signal.

[0172] Optionally, in the micro-amplification power control device, the search module 520 is further configured to:

[0173] If the PCI carried by the re-detected SSB signal is located in the first PCI search reference set, generating a second PCI search reference set according to the second position of the PCI carried by the re-detected SSB signal in the first PCI search reference set;

[0174] The second PCI search reference set includes N PCIs adjacent to the second position and sorted before the second position and N PCIs sorted after the second position.

[0175] Optionally, in the micro-amplification power control device, the output module 530 outputs the detected RSRP to the power control unit, including:

[0176] After the private network resides successfully, during the synchronization process after residing in the private network cell, the detected RSRP is output to the power control unit.

[0177] Another embodiment of the present invention provides a micro-amplification power control device, such as Figure 6 As shown, the device includes:

[0178] The signal acquisition module 610 is configured to acquire, in a downlink frame time slot, a first received signal strength indicator RSSI of a received downlink signal and a reference signal received power RSRP of the private network cell after the micro-amp resides in the private network cell;

[0179] The analysis module 620 is configured to compare the power of the first RSSI with the RSRP to determine a downlink power adjustment amount.

[0180] Optionally, in the micro-amplification power control device, the analysis module 620 is further configured to:

[0181] During the private network cell search process of the micro amplifier, a second received signal strength indicator RSSI of the received downlink signal is obtained in the downlink frame time slot;

[0182] A downlink power adjustment amount is determined according to the power of the second RSSI.

[0183] Optionally, in the micro-amplification power control device, the analyzing module 620 compares the power of the first RSSI with the RSRP to determine the downlink power adjustment amount, including:

[0184] Obtain a first difference between the power of the first RSSI and a first target power, and a second difference between the RSRP and a second target power;

[0185] The downlink power adjustment amount is determined according to the comparison results of the first difference and the second difference with the maximum adjustable power range respectively.

[0186] Optionally, in the micro-amplification power control device, the analyzing module 620 determines the downlink power adjustment amount based on comparison results of the first difference and the second difference with the maximum adjustable power range, including at least one of the following:

[0187] When the first difference is greater than or equal to the maximum adjustable power range, and the second difference is greater than the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the maximum adjustable power range;

[0188] When the first difference is greater than or equal to the maximum adjustable power range, and the second difference is less than the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the second difference;

[0189] When the first difference is less than the maximum adjustable power range and the second difference is greater than or equal to the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the first difference;

[0190] When the first difference is smaller than the maximum adjustable power range and the second difference is smaller than the maximum adjustable power range, the downlink power adjustment amount is determined to be equal to the minimum value of the first difference and the second difference.

[0191] Optionally, in the micro-amplification power control device, the analyzing module 620 determines the downlink power adjustment amount according to the power of the second RSSI, including:

[0192] Obtain a first difference between the power of the second RSSI and the first target power;

[0193] A downlink power adjustment amount is determined according to a comparison result of the first difference and the maximum adjustable power range.

[0194] Optionally, in the micro-amplification power control device, the analyzing module 620 determines the downlink power adjustment amount based on a comparison result between the first difference and the maximum adjustable power range, including at least one of the following:

[0195] When the first difference is greater than or equal to the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the maximum adjustable power range;

[0196] When the first difference is smaller than the maximum adjustable power range, the downlink power adjustment amount is determined to be equal to the first difference.

[0197] Another embodiment of the present invention provides a micro-amplification processing device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the micro-amplification power control method as described above.

[0198] According to the above, the program running on the processor is used to execute Figure 2 The micro-amplification power control method of the embodiment shown, or performing Figure 4The micro-amplification power control method of the illustrated embodiment will not be described in detail here.

[0199] In addition, a specific embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the steps in any one of the above-described micro-amplification power control methods.

[0200] In the several embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection of some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0201] In addition, the functional units in various embodiments of the present invention may be integrated into a single processing unit, each unit may be physically included separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or hardware plus software functional units.

[0202] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to perform some of the steps of the sending and receiving methods described in various embodiments of the present invention. The aforementioned storage medium includes: a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, an optical disk, and other media that can store program code.

[0203] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A micro-amplification power control method, characterized in that: Applied to a modem, the method comprises: Detect synchronization signal and physical broadcast channel block SSB signal; Reside in a private network cell according to the physical cell identifier PCI carried by the SSB signal and a pre-stored physical cell identifier lookup table, wherein the physical cell identifier lookup table sequentially stores the PCI of each private network cell on the private network line; After residing in a private network cell, detecting the reference signal received power RSRP of the private network cell, and outputting the detected RSRP to a power control unit for downlink power control output; After camping on the private network cell, the method further includes: Determine a first position of a PCI in the physical cell identifier lookup table that is identical to the PCI carried by the SSB signal; Generate a first PCI search reference set according to the first position; wherein the first PCI search reference set includes N PCIs adjacent to the first position and sorted before the first position and N PCIs sorted after the first position; N is a positive integer; Synchronize the private network cell according to the first PCI search reference set, the physical cell identifier lookup table, and the PCI carried by the SSB signal detected after residing in the private network cell; The step of synchronizing the private network cell according to the first PCI search reference set, the physical cell identifier lookup table, and the PCI carried by the SSB signal detected after residing in the private network cell includes: After residing in the private network cell, obtain the PCI carried by the re-detected SSB signal; determining whether the PCI carried by the re-detected SSB signal is in the first PCI search reference set; If the PCI carried by the re-detected SSB signal is in the first PCI search reference set, then synchronize to the private network cell corresponding to the PCI carried by the re-detected SSB signal.

2. The micro-amplification power control method according to claim 1, characterized in that: Residency in a private network cell is performed according to the physical cell identifier PCI carried by the SSB signal and a pre-stored physical cell identifier lookup table, including: Searching the physical cell identifier lookup table according to the PCI carried by the SSB signal, and determining whether the physical cell identifier lookup table includes the PCI carried by the SSB signal; When the physical cell identifier lookup table includes the PCI carried by the SSB signal, it is determined that the cell can reside in the private network cell.

3. The micro-amplification power control method according to claim 1, wherein: The method further comprises: If the PCI carried by the re-detected SSB signal is located in the first PCI search reference set, generating a second PCI search reference set according to the second position of the PCI carried by the re-detected SSB signal in the first PCI search reference set; The second PCI search reference set includes N PCIs adjacent to the second position and sorted before the second position and N PCIs sorted after the second position.

4. The micro-amplification power control method according to claim 1, wherein: Outputting the detected RSRP to the power control unit includes: After the private network resides successfully, during the synchronization process after residing in the private network cell, the detected RSRP is output to the power control unit.

5. A micro-amplification power control method, characterized in that: The method comprises: After the micro-amp resides in the private network cell, the first received signal strength indication RSSI of the received downlink signal and the reference signal received power RSRP of the private network cell are obtained in the downlink frame time slot; comparing the power of the first RSSI and the RSRP to determine a downlink power adjustment amount; Comparing the power of the first RSSI and the RSRP to determine the downlink power adjustment amount includes: Obtain a first difference between the power of the first RSSI and a first target power, and a second difference between the RSRP and a second target power; determining a downlink power adjustment amount based on comparison results of the first difference and the second difference with the maximum adjustable power range; Determining the downlink power adjustment amount based on comparison results of the first difference and the second difference with the maximum adjustable power range, respectively, includes at least one of the following: When the first difference is greater than or equal to the maximum adjustable power range, and the second difference is greater than the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the maximum adjustable power range; When the first difference is greater than or equal to the maximum adjustable power range, and the second difference is less than the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the second difference; When the first difference is less than the maximum adjustable power range and the second difference is greater than or equal to the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the first difference; When the first difference is smaller than the maximum adjustable power range and the second difference is smaller than the maximum adjustable power range, the downlink power adjustment amount is determined to be equal to the minimum value of the first difference and the second difference.

6. The micro-amplification power control method according to claim 5, characterized in that: The method further comprises: During the private network cell search process of the micro amplifier, a second received signal strength indicator RSSI of the received downlink signal is obtained in the downlink frame time slot; A downlink power adjustment amount is determined according to the power of the second RSSI.

7. The micro-amplification power control method according to claim 6, characterized in that: Determining a downlink power adjustment amount according to the power of the second RSSI includes: Obtain a first difference between the power of the second RSSI and the first target power; A downlink power adjustment amount is determined according to a comparison result of the first difference and the maximum adjustable power range.

8. The micro-amplification power control method according to claim 7, characterized in that: Determining a downlink power adjustment amount based on a comparison result of the first difference and the maximum adjustable power range includes at least one of the following: When the first difference is greater than or equal to the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the maximum adjustable power range; When the first difference is smaller than the maximum adjustable power range, the downlink power adjustment amount is determined to be equal to the first difference.

9. A micro-discharge power control device, characterized in that: Applied to a modem, the device comprises: A detection module, configured to detect a synchronization signal and a physical broadcast channel block SSB signal; A search module is configured to reside in a private network cell based on a physical cell identifier PCI carried by the SSB signal and a pre-stored physical cell identifier lookup table, wherein the physical cell identifier lookup table sequentially stores the PCI of each private network cell on the private network line; An output module is used to detect the reference signal received power RSRP of the private network cell after camping on the private network cell, and output the detected RSRP to the power control unit for downlink power control output; After the private network cell is settled, the search module is further used to: Determine a first position of a PCI in the physical cell identifier lookup table that is identical to the PCI carried by the SSB signal; Generate a first PCI search reference set according to the first position; wherein the first PCI search reference set includes N PCIs adjacent to the first position and sorted before the first position and N PCIs sorted after the first position; N is a positive integer; Synchronize the private network cell according to the first PCI search reference set, the physical cell identifier lookup table, and the PCI carried by the SSB signal detected after residing in the private network cell; The search module synchronizes the private network cell according to the first PCI search reference set, the physical cell identifier lookup table, and the PCI carried by the SSB signal detected after residing in the private network cell, including: After residing in the private network cell, obtain the PCI carried by the re-detected SSB signal; determining whether the PCI carried by the re-detected SSB signal is in the first PCI search reference set; If the PCI carried by the re-detected SSB signal is in the first PCI search reference set, then synchronize to the private network cell corresponding to the PCI carried by the re-detected SSB signal.

10. A micro-discharge power control device, characterized in that: The device comprises: A signal acquisition module is used to obtain the first received signal strength indication RSSI of the received downlink signal and the reference signal received power RSRP of the private network cell in the downlink frame time slot after the micro amplifier resides in the private network cell; an analysis module, configured to compare the power of the first RSSI with the RSRP to determine a downlink power adjustment amount; The analyzing module compares the power of the first RSSI and the RSRP to determine the downlink power adjustment amount, including: Obtain a first difference between the power of the first RSSI and a first target power, and a second difference between the RSRP and a second target power; determining a downlink power adjustment amount based on comparison results of the first difference and the second difference with the maximum adjustable power range; The analyzing module determines the downlink power adjustment amount based on the comparison results of the first difference and the second difference with the maximum adjustable power range, including at least one of the following: When the first difference is greater than or equal to the maximum adjustable power range, and the second difference is greater than the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the maximum adjustable power range; When the first difference is greater than or equal to the maximum adjustable power range, and the second difference is less than the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the second difference; When the first difference is less than the maximum adjustable power range and the second difference is greater than or equal to the maximum adjustable power range, determining that the downlink power adjustment amount is equal to the first difference; When the first difference is smaller than the maximum adjustable power range and the second difference is smaller than the maximum adjustable power range, the downlink power adjustment amount is determined to be equal to the minimum value of the first difference and the second difference.

11. A micro-amplification processing device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the program implements the micro-discharge power control method according to any one of claims 1 to 4, or the micro-discharge power control method according to any one of claims 5 to 8.

12. A readable storage medium, characterized in that: The readable storage medium stores a program, and when the program is executed by the processor, the program implements the steps of the micro-discharge power control method according to any one of claims 1 to 4, or implements the steps of the micro-discharge power control method according to any one of claims 5 to 8.

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