Method, device and related equipment for determining transmit power, method and device for processing information

Abstract

This invention provides a method, information processing method, apparatus, and related equipment for determining transmit power. The method for determining transmit power, executed by a terminal, includes: acquiring a correspondence between at least two target pieces of information, wherein the at least two target pieces of information include the difference between downlink path loss of a primary spectrum and a target path loss, and the target path loss difference is the difference between uplink path loss of the primary spectrum and uplink path loss of a secondary spectrum; determining the current downlink path loss of the primary spectrum, and determining a first target path loss difference corresponding to the current downlink path loss of the primary spectrum based on the correspondence; and determining a first uplink transmit power of the secondary spectrum based on the current downlink path loss of the primary spectrum and the first target path loss difference. This can improve the accuracy of the uplink transmit power of the secondary spectrum.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communication technology, and in particular to a method for determining transmission power, an information processing method, an apparatus, and related equipment. Background Technology

[0002] In random access schemes, power control of the Physical Random Access Channel (PRACH) requires obtaining the path loss (PL) from the downlink, while the secondary spectrum is an independent uplink carrier, and there is no downlink to estimate the downlink path loss value.

[0003] Currently, the downlink path loss value of the primary spectrum reference signal is typically used to approximate the downlink path loss value of the secondary spectrum. However, the primary and secondary spectra differ significantly in their air interface environment during deployment and in their frequency band characteristics and coverage capabilities at different mobile locations, resulting in a certain gap between the downlink path loss values ​​of the primary and secondary spectra.

[0004] Therefore, the downlink path loss value of the secondary spectrum obtained based on the above estimation has low accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a method for determining transmit power, an information processing method, an apparatus, and related equipment, which solves the problem of low accuracy in determining downlink path loss values ​​for secondary spectrum in the prior art.

[0006] In a first aspect, embodiments of the present invention provide a method for determining transmission power, executed by a terminal, comprising:

[0007] Obtain the correspondence between at least two target information items, wherein the at least two target information items include the downlink path loss difference of the main spectrum and the target path loss difference, and the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum;

[0008] Determine the current downlink path loss of the main spectrum, and based on the correspondence, determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum;

[0009] The first uplink transmit power of the secondary spectrum is determined based on the difference between the current downlink path loss of the primary spectrum and the first target path loss.

[0010] Secondly, embodiments of the present invention provide an information processing method, executed by a network-side device, comprising:

[0011] Determine the correspondence between at least two target information items, wherein the at least two target information items include the downlink path loss difference of the main spectrum and the target path loss difference, and the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum.

[0012] Thirdly, embodiments of the present invention provide a transmission power determination device, comprising:

[0013] The first processor is used for:

[0014] Obtain the correspondence between at least two target information items, wherein the at least two target information items include the downlink path loss difference of the main spectrum and the target path loss difference, and the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum;

[0015] Determine the current downlink path loss of the main spectrum, and based on the correspondence, determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum;

[0016] The first uplink transmit power of the secondary spectrum is determined based on the difference between the current downlink path loss of the primary spectrum and the first target path loss.

[0017] Fourthly, embodiments of the present invention provide an information processing apparatus, comprising:

[0018] The second processor is configured to determine the correspondence between at least two target information items, wherein the at least two target information items include the downlink path loss difference of the main spectrum and the target path loss difference, and the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum.

[0019] Fifthly, embodiments of the present invention provide a communication device, including: a transceiver, a memory, a processor, and a program stored in the memory and executable on the processor; the processor is configured to read the program in the memory to implement the steps in the transmission power determination method as described in the first aspect or the information processing method as described in the second aspect.

[0020] In a sixth aspect, embodiments of the present invention provide a readable storage medium for storing a program, which, when executed by a processor, implements the steps of the transmit power determination method as described in the first aspect or the information processing method as described in the second aspect.

[0021] In this embodiment of the invention, the terminal can determine the first target path loss difference based on the correspondence between the current downlink path loss of the main spectrum and the target path loss difference. Based on this, the current downlink path loss of the secondary spectrum can be determined, thereby calculating the uplink transmit power of the secondary spectrum. Compared with using the downlink path loss of the main spectrum to approximate the downlink path loss of the secondary spectrum, the calculation result of the method in this embodiment of the invention is more accurate, which can reduce the error in determining the downlink PL of the secondary spectrum, improve the accuracy of determining the uplink transmit power of the secondary spectrum, thereby reducing additional retransmission procedures, reducing system overhead, and avoiding the rise of uplink interference, thus improving the performance of uplink power control of the secondary spectrum PRACH. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A structural diagram of a network system to which this invention can be applied;

[0024] Figure 2 This is a flowchart of the transmission power determination method provided in the embodiments of the present invention;

[0025] Figure 3 This is a flowchart of the information processing method provided in the embodiments of the present invention;

[0026] Figure 4 This is a structural diagram of the transmission power determination device provided in an embodiment of the present invention;

[0027] Figure 5 This is a structural diagram of the information processing device provided in an embodiment of the present invention;

[0028] Figure 6 This is a structural diagram of the electronic device provided in an embodiment of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] The terms "first," "second," etc., used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or apparatuses. Additionally, the use of "and / or" in this application indicates at least one of the connected objects, such as A and / or B and / or C, representing seven possibilities: including A alone, B alone, C alone, and the presence of both A and B, both B and C, both A and C, and the presence of A, B, and C.

[0031] In embodiments of the present invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in embodiments of the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0032] Please see Figure 1 , Figure 1 This is a structural diagram of a network system to which embodiments of the present invention can be applied, such as... Figure 1 As shown, it includes a terminal 11 and a network-side device 12. The terminal 11 and the network-side device 12 can communicate with each other.

[0033] Terminal 11, also known as User Equipment (UE), can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), mobile internet device (MID), wearable device, or in-vehicle device in practical applications. Network-side equipment 12 can be a base station, access point, or other network element.

[0034] For ease of understanding, the following describes some aspects of the embodiments of the present invention:

[0035] Physical Random Access Channel (PRACH) power control: During the random access procedure of a terminal, it needs to send a signal or preamble to the network-side device. The terminal needs to control the transmission power of the signal or preamble so that the network-side device can detect the signal or preamble. If the transmission power is too low, the terminal needs to perform an additional retransmission procedure, increasing the system overhead; if the transmission power is too high, it will increase uplink interference.

[0036] Path loss (PL) is the loss incurred by a signal propagating in a channel. For simplicity, in this embodiment of the invention, the uplink path loss is simply referred to as uplink PL, and the downlink path loss is simply referred to as downlink PL.

[0037] The embodiments of the present invention will be described below using terminals and network-side devices as the main implementers.

[0038] Please see Figure 2 , Figure 2 This invention provides a method for determining transmission power, which can be executed by a terminal.

[0039] like Figure 2 As shown, the method for determining the transmission power may include the following steps:

[0040] Step 201: Obtain the correspondence between at least two target information.

[0041] The at least two target information items include the difference between the downlink path loss of the main spectrum and the target path loss, wherein the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum.

[0042] The terminal can obtain the correspondence in advance. The at least two target information includes: 1) the downlink path loss of the main spectrum (hereinafter referred to as downlink PL), and 2) the target path loss difference. The target path loss difference is the difference between the uplink path loss of the main spectrum (hereinafter referred to as uplink PL) and the uplink PL of the auxiliary spectrum, which is denoted as ΔPL. In other words, the terminal can obtain the correspondence between the downlink PL of the main spectrum and ΔPL in advance.

[0043] In specific implementation, the downlink PL of the main spectrum can be determined based on the transmit power of the downlink reference signal (RS) and the receive power of the downlink reference signal (RSRP) of the main spectrum. Optionally, the downlink PL of the main spectrum is the difference between the transmit power of the downlink RS and the downlink RSRP measured by the terminal. The transmit power of the downlink RS can be configured by the network-side equipment and can be indicated to the terminal through the ss-PBCH-BlockPower parameter in the broadcast message. The downlink RSRP is obtained by the terminal measuring the strength of the broadcast signal.

[0044] The uplink power shift (PL) of the primary spectrum and the uplink power shift (PL) of the secondary spectrum can be measured by network-side devices. The uplink power shift of the primary spectrum can be determined based on the transmit power and receive power of the uplink sounding reference signal (SRS) of the primary spectrum. Optionally, the uplink power shift of the primary spectrum is the difference between the transmit power and receive power of the uplink SRS of the primary spectrum. The uplink power shift of the secondary spectrum can be determined based on the transmit power and receive power of the uplink SRS of the secondary spectrum. Optionally, the uplink power shift of the secondary spectrum is the difference between the transmit power and receive power of the uplink SRS of the secondary spectrum.

[0045] In one optional implementation, ΔPL is the difference between the uplink PL of the main spectrum and the uplink PL of the secondary spectrum corresponding to a pre-measured sample point; in another optional implementation, ΔPL is the aggregate value of multiple target differences corresponding to multiple pre-measured sample points, wherein the target difference is the difference between the uplink PL of the main spectrum and the uplink PL of multiple secondary spectra corresponding to a pre-measured sample point, and the multiple sample points are associated with the communication point currently corresponding to the terminal.

[0046] The correspondence can be determined by the terminal itself, and the terminal can obtain the correspondence when needed. Alternatively, the correspondence can be determined by a network-side device. Furthermore, obtaining the correspondence between at least two target information items includes obtaining the correspondence from the network-side device. Specifically, the terminal can receive and obtain the correspondence sent by the network-side device, or the correspondence can be determined by the network-side device and written into a protocol, and the terminal can obtain the correspondence based on the protocol when needed. In this way, the terminal only needs to obtain and store the correspondence in advance, without consuming computing resources to determine the mapping relationship itself, thus reducing the terminal's computational overhead.

[0047] The correspondence can be a table, which includes at least one row / column, and each row / column stores at least one downlink PL of the main spectrum and one ΔPL. The correspondence can also be a function, such as ΔPL = f. ΔPL (Main spectrum downlink PL). It is understood that the implementation of the correspondence is not limited to this, and can be determined according to the actual situation. The embodiments of the present invention are not limited here.

[0048] Step 202: Determine the current downlink path loss of the main spectrum, and determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum according to the correspondence.

[0049] In specific implementation, the current downlink path loss of the main spectrum (hereinafter referred to as the current downlink PL) refers to the downlink PL of the main spectrum currently measured by the terminal. The first target path loss difference (hereinafter referred to as the first ΔPL) refers to the ΔPL determined by the terminal based on the current downlink PL of the main spectrum and the corresponding relationship, which can represent the difference between the current uplink PL of the main spectrum and the uplink PL of the secondary spectrum.

[0050] Step 203: Determine the first uplink transmit power of the auxiliary spectrum based on the difference between the current downlink path loss of the main spectrum and the first target path loss.

[0051] Since the path loss difference between the main spectrum and the auxiliary spectrum in the uplink is equal to or almost equal to the path loss difference between them in the downlink, the first ΔPL is also the difference between the current downlink PL of the main spectrum and the downlink PL of the auxiliary spectrum. Therefore, the current downlink PL of the auxiliary spectrum can be the difference between the current downlink PL of the main spectrum and the first ΔPL.

[0052] The first uplink transmit power P of the secondary spectrum PRACH This refers to the uplink transmit power of the secondary spectrum that the terminal currently needs to determine. Specifically, the uplink transmit power of the secondary spectrum can be expressed as:

[0053] min{P CMAX P PRACH , target +auxiliary spectrum downlink PL}

[0054] Among them, P CMAX The maximum transmit power of the terminal, P for different types of terminals CMAX Different, P PRACH,target The terminal can directly obtain the PRACH channel expected received power configured for the higher-layer signaling PREAMBLE_RECEIVED_TARGET_POWER from the network equipment.PRACH,target .

[0055] The current downlink PL of the secondary spectrum can be the difference between the current downlink PL of the primary spectrum and the first ΔPL. Therefore, the first uplink transmit power P of the secondary spectrum... PRACH It can be:

[0056] P PRACH =min{P CMAX P PRACH , target +Current downlink PL of the main spectrum - First ΔPL}

[0057] The transmit power determination method of this invention allows the terminal to determine the difference between the current uplink PL of the main spectrum and the uplink PL of the secondary spectrum based on the current downlink path loss of the main spectrum and the corresponding relationship. This allows the terminal to determine the current downlink path loss of the secondary spectrum and calculate the uplink transmit power of the secondary spectrum. Compared to approximating the downlink path loss of the secondary spectrum using the downlink path loss of the main spectrum, the method of this invention provides more accurate calculation results, reduces the error in determining the downlink PL of the secondary spectrum, improves the accuracy of determining the uplink transmit power of the secondary spectrum, reduces additional retransmission procedures, lowers system overhead, avoids uplink interference spikes, and improves the performance of uplink power control in the secondary spectrum PRACH.

[0058] Optionally, the at least two target information items may also include parameter values ​​of preset parameters;

[0059] Before determining the current downlink path loss of the main spectrum and, based on the correspondence, determining the first target path loss difference corresponding to the current downlink path loss of the main spectrum, the method further includes:

[0060] Receive the first parameter value of the preset parameter sent by the network-side device;

[0061] The step of determining the current downlink path loss of the main spectrum and, based on the correspondence, determining the first target path loss difference corresponding to the current downlink path loss of the main spectrum, includes:

[0062] Determine the current downlink path loss of the main spectrum, and based on the correspondence, determine the first target path loss difference between the current downlink path loss of the main spectrum and the first parameter value.

[0063] In this implementation, the preset parameters can be parameters characterizing the current channel model, including but not limited to at least one of the following: base station height; center frequency; average building height; average street width. The network-side device can detect the first parameter value of each preset parameter corresponding to the current communication channel and send it to the terminal. If the terminal cannot uniquely determine the first ΔPL based on the current downlink PL of the main spectrum, the terminal can further determine the first ΔPL based on the first parameter value, which can reduce the complexity and system overhead of the terminal in determining the first ΔPL and improve the efficiency of the terminal in determining the first ΔPL.

[0064] In a specific implementation, taking the correspondence as a table as an example, when the preset parameters include the base station height, the center frequency, the average building height, and the average street width, the table is as shown in Table 1.

[0065] Table 1. Correspondence between preset parameters, downlink PL of the main spectrum, and target ΔPL

[0066]

[0067] The correspondence can also be a function. When the preset parameters include the base station height, the center frequency, the average building height, and the average street width, the function can be expressed as ΔPL = f ΔPL (Main spectrum downlink PL, base station height, center frequency, average building height, average street width). It is understood that the implementation of the aforementioned correspondence is not limited to this, and can be determined according to the actual situation; this embodiment of the invention does not limit it here.

[0068] The network-side device can send the first parameter value to the terminal via a broadcast message, or it can send the first parameter value to the terminal via other signaling independent of the broadcast message. The specific method can be determined according to the actual situation, and this embodiment of the invention does not limit it.

[0069] Optionally, the number of the correspondences is P, and each correspondence is associated with an object, the object including at least one of the communication scenario or communication area, where P is a positive integer;

[0070] Before determining the current downlink path loss of the main spectrum and, based on the correspondence, determining the first target path loss difference corresponding to the current downlink path loss of the main spectrum, the method further includes:

[0071] Receive a first index value sent by a network-side device, wherein the first index value includes at least one of an index value of a first scene and an index value of a first region;

[0072] Among the P correspondences, determine the first correspondence corresponding to the first index value;

[0073] The step of determining the current downlink path loss of the main spectrum and, based on the correspondence, determining the first target path loss difference corresponding to the current downlink path loss of the main spectrum includes:

[0074] Determine the current downlink path loss of the main spectrum, and based on the first correspondence, determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum.

[0075] In this implementation, the object includes at least one of a communication scenario or a communication region, both of which can correspond to the current communication channel model. The network-side device can determine one correspondence for a communication scenario, one correspondence for a communication region, or one correspondence for a communication region within a communication scenario.

[0076] The network-side device, based on the current communication channel model, can determine the current communication scenario and / or communication area to determine the first index value to be sent to the terminal. The terminal can determine the first correspondence among the P correspondences based on the first index value, and further determine the first ΔPL based on the first correspondence and the current downlink PL of the main spectrum. This reduces the complexity and system overhead of the terminal determining the first ΔPL, and improves the efficiency of the terminal in determining the first ΔPL.

[0077] In a specific implementation, one of the correspondences can be a table. For example, when the correspondence includes the parameter values ​​of the preset parameters, P tables can be obtained by splitting them based on Table 1. For example, the table corresponding to the communication area j in communication scenario i is shown in Table 2.

[0078] Table 2 shows the corresponding communication area j in communication scenario i.

[0079]

[0080] A correspondence can also be a function; for example, the function corresponding to communication region j in communication scenario i can be expressed as ΔPL = f ΔPL (i) (j)=f ΔPL (i) (j)(Main spectrum downlink PL).

[0081] It should be noted that when the at least two target information also include the parameter values ​​of preset parameters, since the average building height and / or average street width in the same area are relatively consistent, the preset parameters may not include the average building height and / or average street width, in order to reduce the complexity of the correspondence and reduce system overhead.

[0082] The network-side device can send the first index value (first scene index value and / or first area index value) to the terminal via a broadcast message, or it can send the first index value to the terminal via other signaling independent of the broadcast message. The specific method can be determined according to the actual situation, and this embodiment of the invention does not limit it here.

[0083] It should be noted that, in one exemplary implementation, the network-side device can simultaneously send the first scene index value, the first region index value, and the first parameter value to the terminal via a broadcast message. The terminal can determine the first correspondence based on the first scene index value and the first region index value, and then determine the first ΔPL based on the first correspondence according to the first parameter value and the current downlink PL of the main spectrum. The specific implementation can be determined according to actual circumstances, and this embodiment of the invention does not impose limitations here.

[0084] The following example, using a network-side device to determine the correspondence, illustrates the specific implementation method for determining the correspondence:

[0085] Optionally, determining the mapping relationship between downlink path loss and path loss difference in the main spectrum includes:

[0086] Determine N sample points;

[0087] Obtain N first datasets corresponding to the N sample points. The first datasets corresponding to the first sample points include: the second downlink path loss of the main spectrum corresponding to the first sample point, and the second target path loss difference corresponding to the first sample point. The second target path loss difference is the difference between the uplink path loss of the main spectrum corresponding to the first sample point and the uplink path loss of the auxiliary spectrum. The first sample point is any one of the N sample points, and N is a positive integer.

[0088] Based on the N first datasets, the N sample points are clustered to obtain M cluster centers and M second datasets corresponding to the M cluster centers. The second datasets corresponding to the first cluster centers include: the third downlink path loss of the main spectrum corresponding to the first cluster center, and the third target path loss difference corresponding to the first cluster center. The third target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum corresponding to the first cluster center. The first cluster center is any one of the M cluster centers, and M is a positive integer less than N.

[0089] The correspondence is determined based on the M second datasets corresponding to the M cluster centers.

[0090] The specific explanation is as follows:

[0091] Step 1: Determine N sample points.

[0092] In this step, the sample points are sample communication points. N can be preset to ensure that the N sample points can cover as many types of channel models as possible. In specific implementation, the N sample points can be selected from hotspot scenarios such as large gatherings, densely populated urban areas and commercial areas, scenic spots, and transportation hubs, or from hotspot provinces and cities or residential areas. The specific selection can be determined according to the actual situation, and this embodiment of the invention does not limit the selection.

[0093] Optionally, the network-side device can determine multiple communication scenarios, including large gatherings, densely populated urban and commercial areas, scenic spots, and transportation hubs, based on at least one of geographical division, user distribution, and service characteristics. In each communication scenario, it can determine the N sample points and perform subsequent steps two to four for each communication scenario to determine a corresponding relationship for each communication scenario.

[0094] Step 2: Obtain the N first datasets corresponding to the N sample points.

[0095] In this step, taking the first sample point as an example, the second downlink path loss (hereinafter referred to as the second downlink PL) of the main spectrum corresponding to the first sample point can be determined based on the downlink RS power and downlink RSRP of the main spectrum corresponding to the first sample point. The specific implementation method can be referred to the relevant description in the above embodiments, and will not be repeated here. The second target path loss difference (hereinafter referred to as the second ΔPL) can be determined based on the uplink PL of the main spectrum and the uplink PL of the auxiliary spectrum corresponding to the first sample point. The specific implementation method can be referred to the relevant description in the above embodiments, and will not be repeated here.

[0096] Optionally, if the target information further includes the parameter values ​​of the preset parameters, the first dataset also includes the parameter values ​​of the preset parameters corresponding to the first sample point. For example, if the preset parameters include base station height, center frequency, average building height, and average street width, the first dataset corresponding to the first sample point includes: the second downlink PL, the second ΔPL, the first base station height, the first center frequency, the first average building height, and the first average street width of the main spectrum corresponding to the first sample point.

[0097] In a specific implementation, the network-side device can obtain the parameter value of the preset parameter corresponding to the first sample point from the information reported by the terminal. For example, the network-side device can obtain the parameter value of the preset parameter from the measurement report (MR) reported by the terminal, the network management statistical KPI indicators, the drive test record terminal log, or other autonomously recorded data.

[0098] Step 3: Based on the N first datasets, cluster the N sample points to obtain M cluster centers and M second datasets corresponding to the M cluster centers.

[0099] In specific implementation, the clustering algorithm includes, but is not limited to, clustering algorithms based on artificial intelligence, data mining, machine learning, etc., such as K-means clustering algorithm or k-nearest neighbor (KNN) classification algorithm.

[0100] Optionally, the N first datasets are input into a pre-initialized clustering model for training and clustering to obtain M clustered second datasets, each second dataset corresponding to a cluster center point. To facilitate model calculation, taking an example where the first dataset includes the second downlink PL of the main spectrum, the second ΔPL, the first base station height, the first center frequency, the first average building height, and the first average street width, optionally, based on the first dataset corresponding to the first sample point, the vector representation corresponding to the first sample point can be generated as follows:

[0101] [PL n fc n h bsn h n w n ΔPL n ]

[0102] Where n is the index of the sample point, which can be 1, 2, 3, ..., N.

[0103] Therefore, based on the N first datasets, a first matrix corresponding to the N sample points can be generated. The row vectors of the first matrix are the vectors corresponding to the first sample points. The first matrix is ​​as follows:

[0104]

[0105] The first matrix is ​​used as the input matrix of the clustering model. The clustering model processes the first matrix using a clustering algorithm to obtain a second matrix. The row vectors in the second matrix are the vectors corresponding to the first cluster centroids. The second matrix is ​​as follows:

[0106]

[0107] The vectors corresponding to the first cluster center points are as follows:

[0108] [PL′ m fc′ m h′ bsm h′ m w′ m ΔPL′ m ]

[0109] Where m is the index of the cluster center, which can be 1, 2, 3, ..., M.

[0110] It is understood that the implementation of clustering the N sample points based on the N first datasets is not limited to this. The specific implementation method can be determined according to the actual situation. The specific implementation process can also be referred to the description in the relevant technology. The embodiments of the present invention are not limited here.

[0111] Step 4: Determine the correspondence based on the M second datasets corresponding to the M cluster centers.

[0112] In specific implementation, the network-side device can determine the correspondence between the downlink PL and ΔPL of the main spectrum based on the correspondence between the second downlink PL and the second ΔPL in a second dataset. Optionally, if the correspondence is a table, then a row / column of the table is determined based on a second dataset. If the correspondence is a function, then the function is determined based on the M second datasets.

[0113] Optionally, the dataset may also include at least one of average building height and average street width;

[0114] Determining the correspondence based on the M second datasets corresponding to the M cluster centers includes:

[0115] Based on the average building height and / or average street width, the M cluster centers are divided into K classes associated with K communication regions; the first class includes L cluster centers corresponding to L average building heights and / or L average street widths that are the same, the first class is any of the K classes, the first class is associated with the first communication region, and K and L are both positive integers less than M.

[0116] Based on the L second datasets corresponding to the L cluster centers, a correspondence relationship associated with the first communication region is determined.

[0117] In this implementation, based on the relative consistency of average building height and / or average street width within the same area, multiple cluster centers with the same average building height and / or average street width can be assigned to the same communication region, with one communication region corresponding to one region index value. This further divides the correspondence associated with a communication scenario into multiple correspondences associated with multiple communication regions, reducing the complexity of subsequent terminal determination of the first ΔPL and lowering system overhead.

[0118] Please see Figure 3 , Figure 3 This is an information processing method provided in an embodiment of the present invention, which can be executed by a network-side device.

[0119] like Figure 3 As shown, the information processing method may include the following steps:

[0120] Step 301: Determine the correspondence between at least two target information items, wherein the at least two target information items include the downlink path loss of the main spectrum and the target path loss difference, and the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum.

[0121] Optionally, the at least two target information items may also include parameter values ​​of preset parameters;

[0122] The method further includes:

[0123] Send the first parameter value of the preset parameter to the terminal;

[0124] The preset parameters include at least one of the following: base station height; center frequency; average building height; average street width.

[0125] Optionally, the number of the correspondences is P, and each correspondence is associated with an object, the object including at least one of the communication scenario or communication area, where P is a positive integer;

[0126] The method further includes:

[0127] Send a first index value to the terminal, the first index value including at least one of a first scene index value and a first region index value.

[0128] Optionally, determining the correspondence between at least two pieces of target information includes:

[0129] Determine N sample points;

[0130] Obtain N first datasets corresponding to the N sample points. The first datasets corresponding to the first sample points include: the second downlink path loss of the main spectrum corresponding to the first sample point, and the second target path loss difference corresponding to the first sample point. The second target path loss difference is the difference between the uplink path loss of the main spectrum corresponding to the first sample point and the uplink path loss of the auxiliary spectrum. The first sample point is any one of the N sample points, and N is a positive integer.

[0131] Based on the N first datasets, the N sample points are clustered to obtain M cluster centers and M second datasets corresponding to the M cluster centers. The second datasets corresponding to the first cluster centers include: the third downlink path loss of the main spectrum corresponding to the first cluster center, and the third target path loss difference corresponding to the first cluster center. The third target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum corresponding to the first cluster center. The first cluster center is any one of the M cluster centers, and M is a positive integer less than N.

[0132] The correspondence is determined based on the M second datasets corresponding to the M cluster centers.

[0133] Optionally, the dataset may also include at least one of average building height and average street width;

[0134] Determining the correspondence based on the M second datasets corresponding to the M cluster centers includes:

[0135] Based on the average building height and / or average street width, the M cluster centers are divided into K classes associated with K communication regions; the first class includes L cluster centers corresponding to L average building heights and / or L average street widths that are the same, the first class is any of the K classes, the first class is associated with the first communication region, and K and L are both positive integers less than M.

[0136] Based on the L second datasets corresponding to the L cluster centers, a correspondence relationship associated with the first communication region is determined.

[0137] It should be noted that this embodiment is an implementation of a network-side device corresponding to the above method embodiments. Therefore, the relevant descriptions in the above method embodiments can be referred to, and the same beneficial effects can be achieved. To avoid repetition, further details will not be provided here.

[0138] In the information processing method of this invention, the network-side device can determine the correspondence between the downlink path loss (PL) and ΔPL of the primary spectrum, so that the terminal can obtain the correspondence. Thus, the terminal can determine the difference between the current uplink PL of the primary spectrum and the uplink PL of the secondary spectrum based on the current downlink path loss of the primary spectrum and the correspondence, and further determine the current downlink path loss of the secondary spectrum, thereby calculating the uplink transmit power of the secondary spectrum. Compared with using the downlink PL of the primary spectrum to approximate the downlink PL of the secondary spectrum, the calculation result of this embodiment is more accurate, reducing the error in determining the downlink PL of the secondary spectrum, improving the accuracy of determining the uplink transmit power of the secondary spectrum, thereby reducing the additional retransmission process of the terminal, reducing system overhead, and avoiding uplink interference spikes, thus improving the performance of the uplink power control of the secondary spectrum PRACH.

[0139] It should be noted that the various optional implementation methods described in the embodiments of the present invention can be combined with each other or implemented individually, and the embodiments of the present invention do not limit this.

[0140] For ease of understanding, the following example is provided:

[0141] This example provides a method for determining the uplink transmit power of a secondary spectrum, and the specific process is as follows:

[0142] Step 1: The network-side device establishes a table showing the correspondence between the downlink PL and the ΔPL of the main spectrum. The network-side device stores the table locally and sends the table to the terminal, where the terminal stores it locally.

[0143] The process for creating the table is as follows:

[0144] 1) Based on geographical division, user distribution and business characteristics, the potential deployment scenarios of FUL are divided into four or more hot communication scenarios dominated by behavior: large gatherings, dense urban areas and commercial areas, scenic spots and transportation hubs.

[0145] 2) For the four communication scenarios mentioned above, based on the MR data reported by the terminal, network management statistical KPI indicators, drive test recorded terminal logs, or other self-recorded data, N sample points are determined from the top hotspot provinces and cities and cells for each scenario. These N sample points can cover as many channel models as possible and can extract a sufficiently rich set of key channel model parameters. The key channel model parameters include, but are not limited to, the network-side base station height h.bs Center frequency fc, average building height h, and average street width w.

[0146] Each sample point defines a set of data, including but not limited to: the network-side base station height h corresponding to the sample point. bs The following parameters are considered: center frequency fc, average building height h, average street width w, the second downlink PL of the main spectrum on the terminal side, and the second ΔPL. The second ΔPL is determined based on the following formula:

[0147] Second ΔPL = Uplink PL of the main spectrum corresponding to the sample point - Uplink PL of the auxiliary spectrum corresponding to the sample point.

[0148] 3) For each scenario, clustering algorithms based on artificial intelligence, data mining, and machine learning technologies, such as K-means, are used to cluster the N sets of data corresponding to the N sample points into M sets of data. The M sets of data are the data corresponding to the M cluster centers, forming a correspondence ΔPL = f ΔPL (Main spectrum downlink PL), the specific table format is shown in Table 3:

[0149] Table 3. Correspondence between key parameters of the channel model and downlink PL and ΔPL of the main spectrum.

[0150]

[0151] 4) For communication scenario i, considering the relative consistency of some key parameters of the channel model within the same area (such as average street width and average building height), to reduce implementation complexity and overhead, the mapping relationship f is... ΔPL Further subdivided into J ΔPL = f ΔPL (i) (j), where i represents the scene index value, j represents the region index value, and ΔPL = f ΔPL (i) (j) represents the mapping relationship between the downlink PL of the main spectrum and the ΔPL in communication area j within communication scenario i. The mapping relationship ΔPL = f ΔPL (i) The specific table format for (j) is shown in Table 4:

[0152] Table 4 shows the corresponding communication area j in communication scenario i.

[0153]

[0154] Step 2: The network-side device indicates the downlink RS transmit power P of the terminal through the ss-PBCH-BlockPower parameter in the broadcast message. SS-PBCHThe terminal can obtain the received power (SSB) RSRP of the broadcast signal by measuring the broadcast signal strength, and then calculate the current downlink power (PL) of the main spectrum based on the following formula:

[0155] The current downlink PL=P of the main spectrum SS-PBCH -SSB RSRP.

[0156] In addition, the network-side equipment also broadcasts the scene index value i, the area index value j, and the first base station height h via a broadcast message. bs Or at least one of the first center frequency fc is sent to the terminal, and the terminal can receive and obtain the scene index value i, the area index value j, and the first base station height h. bs Or at least one of the first center frequencies fc.

[0157] Step 3: The terminal first determines table i corresponding to the scenario index value i, then determines table j from multiple sub-tables in table i, and then uses the calculated current downlink PL of the main spectrum and the received first base station height h. bs Use at least one of the following as a query parameter: the first center frequency fc, or the first center frequency fc, to search for the corresponding first ΔPL in the table j.

[0158] Step 4: Determine the first uplink transmit power of the secondary spectrum. The first uplink transmit power of the secondary spectrum can be determined based on the following formula:

[0159] P PRACH =min{P CMAX P PRACH , target +Current downlink PL of the main spectrum - First ΔPL}

[0160] Among them, P CMAX The maximum transmit power of the terminal, P for different types of terminals CMAX Different, P PRACH,target The terminal can directly obtain the PRACH channel expected received power configured for the higher-layer signaling PREAMBLE_RECEIVED_TARGET_POWER from the network equipment. PRACH,target .

[0161] This example provides a method for determining the uplink transmit power (PL) of a secondary spectrum, addressing the problem that the secondary spectrum lacks a downlink link, making accurate calculation of the downlink PL impossible. Based on key channel model parameters, a mapping relationship between the downlink PL and the ΔPL of the primary spectrum is trained and clustered. The mapping table corresponding to this relationship is stored on both the network-side device and the terminal. By using higher-layer signaling from the network-side device to indicate some key channel model parameters, the terminal is assisted in finding the accurate ΔPL, thereby improving the accuracy of PRACH uplink transmit power determination for the secondary spectrum, enhancing the performance of PRACH uplink power control, and improving the performance of random access at the terminal.

[0162] See Figure 4 , Figure 4 This is one of the structural diagrams of the transmission power determination device provided in the embodiments of the present invention.

[0163] like Figure 4 As shown, determining the transmission power 400 includes:

[0164] The first processor 401 is used for:

[0165] Obtain the correspondence between at least two target information items, wherein the at least two target information items include the downlink path loss difference of the main spectrum and the target path loss difference, and the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum;

[0166] Determine the current downlink path loss of the main spectrum, and based on the correspondence, determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum;

[0167] The first uplink transmit power of the secondary spectrum is determined based on the difference between the current downlink path loss of the primary spectrum and the first target path loss.

[0168] Optionally, the correspondence is determined by the network-side device; obtaining the correspondence between at least two target information includes:

[0169] Obtain the correspondence from the network-side device.

[0170] Optionally, the at least two target information items may also include parameter values ​​of preset parameters;

[0171] The first transceiver 402 is also used to receive the first parameter value of the preset parameter sent by the network-side device;

[0172] The first processor 401 is specifically used to determine the current downlink path loss of the main spectrum, and to determine the first target path loss difference between the current downlink path loss of the main spectrum and the first parameter value according to the correspondence.

[0173] The preset parameters include at least one of the following: base station height; center frequency; average building height; average street width.

[0174] Optionally, the number of the correspondences is P, and each correspondence is associated with an object, the object including at least one of the communication scenario or communication area, where P is a positive integer;

[0175] The first transceiver 402 is also configured to receive a first index value sent by a network-side device, wherein the first index value includes at least one of an index value of a first scenario and an index value of a first region.

[0176] The first processor 401 is also used for:

[0177] Among the P correspondences, determine the first correspondence corresponding to the first index value;

[0178] Determine the current downlink path loss of the main spectrum, and based on the first correspondence, determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum.

[0179] The transmit power determination device 400 can implement all the processes that the terminal can implement in the method embodiment of the present invention, and achieve the same beneficial effects. To avoid repetition, it will not be described again here.

[0180] See Figure 5 , Figure 5 This is the second structural diagram of the information processing device provided in the embodiments of the present invention.

[0181] like Figure 5 As shown, the information processing device 500 includes:

[0182] The second processor 501 is used to determine the correspondence between at least two target information, the at least two target information including the downlink path loss of the main spectrum and the target path loss difference, the target path loss difference being the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum.

[0183] Optionally, the at least two target information items may also include parameter values ​​of preset parameters;

[0184] The information processing device 500 also includes:

[0185] The second transceiver is used to send the first parameter value of the preset parameter to the terminal;

[0186] The preset parameters include at least one of the following: base station height; center frequency; average building height; average street width.

[0187] Optionally, the number of the correspondences is P, and each correspondence is associated with an object, the object including at least one of the communication scenario or communication area, where P is a positive integer;

[0188] The second transceiver is also used to send a first index value to the terminal, the first index value including at least one of a first scene index value and a first region index value.

[0189] Optionally, the second processor 501 is specifically used for:

[0190] Determine N sample points;

[0191] Obtain N first datasets corresponding to the N sample points. The first datasets corresponding to the first sample points include: the second downlink path loss of the main spectrum corresponding to the first sample point, and the second target path loss difference corresponding to the first sample point. The second target path loss difference is the difference between the uplink path loss of the main spectrum corresponding to the first sample point and the uplink path loss of the auxiliary spectrum. The first sample point is any one of the N sample points, and N is a positive integer.

[0192] Based on the N first datasets, the N sample points are clustered to obtain M cluster centers and M second datasets corresponding to the M cluster centers. The second datasets corresponding to the first cluster centers include: the third downlink path loss of the main spectrum corresponding to the first cluster center, and the third target path loss difference corresponding to the first cluster center. The third target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum corresponding to the first cluster center. The first cluster center is any one of the M cluster centers, and M is a positive integer less than N.

[0193] The correspondence is determined based on the M second datasets corresponding to the M cluster centers.

[0194] Optionally, the dataset may also include at least one of average building height and average street width;

[0195] The second processor 501 is specifically used for:

[0196] Based on the average building height and / or average street width, the M cluster centers are divided into K classes associated with K communication regions; the first class includes L cluster centers corresponding to L average building heights and / or L average street widths that are the same, the first class is any of the K classes, the first class is associated with the first communication region, and K and L are both positive integers less than M.

[0197] Based on the L second datasets corresponding to the L cluster centers, a correspondence relationship associated with the first communication region is determined.

[0198] The information processing device 500 can implement all the processes that the network-side device in the method embodiment of the present invention can implement, and achieve the same beneficial effects. To avoid repetition, it will not be described again here.

[0199] This invention also provides a communication device. Please refer to [link to relevant documentation]. Figure 6 The communication device 600 may include: a transceiver, a memory 601, a processor 602, and a program 6011 stored in the memory 601 and executable on the processor 602; the processor 602 is used to read the program 6011 from the memory 601 to implement, for example... Figure 2 or Figure 3 Any steps in the corresponding method embodiments and the achievement of the same beneficial effects will not be repeated here.

[0200] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by hardware related to program instructions, and the program can be stored in a computer-readable medium. The present invention also provides a computer-readable storage medium storing a third computer program, which, when executed by a fourth processor, can implement the above-described methods. Figure 2 or Figure 3 Any step in the corresponding method embodiment can achieve the same technical effect, and will not be repeated here to avoid repetition.

[0201] The storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0202] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for determining transmission power, executed by a terminal, characterized in that, include: Obtain the correspondence between at least two target information items, wherein the at least two target information items include the downlink path loss difference of the main spectrum and the target path loss difference, and the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum; Determine the current downlink path loss of the main spectrum, and based on the correspondence, determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum; The first uplink transmit power of the secondary spectrum is determined based on the difference between the current downlink path loss of the primary spectrum and the first target path loss.

2. The method according to claim 1, characterized in that, The correspondence is determined by the network-side device; obtaining the correspondence between at least two target information includes: Obtain the correspondence from the network-side device.

3. The method according to claim 1, characterized in that, The at least two target information items also include parameter values ​​of preset parameters; Before determining the current downlink path loss of the main spectrum and, based on the correspondence, determining the first target path loss difference corresponding to the current downlink path loss of the main spectrum, the method further includes: Receive the first parameter value of the preset parameter sent by the network-side device; The step of determining the current downlink path loss of the main spectrum and, based on the correspondence, determining the first target path loss difference corresponding to the current downlink path loss of the main spectrum includes: Determine the current downlink path loss of the main spectrum, and based on the correspondence, determine the first target path loss difference between the current downlink path loss of the main spectrum and the first parameter value; The preset parameters include at least one of the following: base station height; center frequency; average building height; average street width.

4. The method according to claim 1, characterized in that, The number of the correspondences is P, and each correspondence is associated with an object, which includes at least one of the communication scenarios or communication areas, where P is a positive integer. Before determining the current downlink path loss of the main spectrum and, based on the correspondence, determining the first target path loss difference corresponding to the current downlink path loss of the main spectrum, the method further includes: Receive a first index value sent by a network-side device, wherein the first index value includes at least one of an index value of a first scene and an index value of a first region; Among the P correspondences, determine the first correspondence corresponding to the first index value; The step of determining the current downlink path loss of the main spectrum and, based on the correspondence, determining the first target path loss difference corresponding to the current downlink path loss of the main spectrum includes: Determine the current downlink path loss of the main spectrum, and based on the first correspondence, determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum.

5. An information processing method, executed by a network-side device, characterized in that, include: Determine the correspondence between at least two target information items, wherein the at least two target information items include the difference between the downlink path loss of the main spectrum and the target path loss, and the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum, so that the terminal can obtain the correspondence; Determine the current downlink path loss of the main spectrum, and based on the correspondence, determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum; The first uplink transmit power of the secondary spectrum is determined based on the difference between the current downlink path loss of the primary spectrum and the first target path loss.

6. The method according to claim 5, characterized in that, The at least two target information items also include parameter values ​​of preset parameters; The method further includes: Send the first parameter value of the preset parameter to the terminal; The preset parameters include at least one of the following: base station height; center frequency; average building height; average street width.

7. The method according to claim 5, characterized in that, The number of the correspondences is P, and each correspondence is associated with an object, which includes at least one of the communication scenarios or communication areas, where P is a positive integer. The method further includes: Send a first index value to the terminal, the first index value including at least one of a first scene index value and a first region index value.

8. The method according to any one of claims 5-7, characterized in that, Determining the correspondence between at least two target information items includes: Determine N sample points; Obtain N first datasets corresponding to the N sample points. The first datasets corresponding to the first sample points include: the second downlink path loss of the main spectrum corresponding to the first sample point, and the second target path loss difference corresponding to the first sample point. The second target path loss difference is the difference between the uplink path loss of the main spectrum corresponding to the first sample point and the uplink path loss of the auxiliary spectrum. The first sample point is any one of the N sample points, and N is a positive integer. Based on the N first datasets, the N sample points are clustered to obtain M cluster centers and M second datasets corresponding to the M cluster centers. The second datasets corresponding to the first cluster centers include: the third downlink path loss of the main spectrum corresponding to the first cluster center, and the third target path loss difference corresponding to the first cluster center. The third target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum corresponding to the first cluster center. The first cluster center is any one of the M cluster centers, and M is a positive integer less than N. The correspondence is determined based on the M second datasets corresponding to the M cluster centers.

9. The method according to claim 8, characterized in that, The dataset also includes at least one of average building height and average street width; Determining the correspondence based on the M second datasets corresponding to the M cluster centers includes: Based on the average building height and / or average street width, the M cluster centers are divided into K classes associated with K communication regions; the first class includes L cluster centers corresponding to L average building heights and / or L average street widths that are the same, the first class is any of the K classes, the first class is associated with the first communication region, and K and L are both positive integers less than M. Based on the L second datasets corresponding to the L cluster centers, a correspondence relationship associated with the first communication region is determined.

10. A device for determining transmission power, characterized in that, include: The first processor is used for: Obtain the correspondence between at least two target information items, wherein the at least two target information items include the downlink path loss difference of the main spectrum and the target path loss difference, and the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum; Determine the current downlink path loss of the main spectrum, and based on the correspondence, determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum; The first uplink transmit power of the secondary spectrum is determined based on the difference between the current downlink path loss of the primary spectrum and the first target path loss.

11. An information processing device, characterized in that, include: The second processor is configured to determine the correspondence between at least two target information items, wherein the at least two target information items include the downlink path loss difference of the main spectrum and the target path loss difference, and the target path loss difference is the difference between the uplink path loss of the main spectrum and the uplink path loss of the auxiliary spectrum, so that the terminal can obtain the correspondence. Determine the current downlink path loss of the main spectrum, and based on the correspondence, determine the first target path loss difference corresponding to the current downlink path loss of the main spectrum; The first uplink transmit power of the secondary spectrum is determined based on the difference between the current downlink path loss of the primary spectrum and the first target path loss.

12. A communication device, comprising: A transceiver, a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that the processor is configured to read the program in the memory to implement the steps in the transmission power determination method as described in any one of claims 1 to 4; or, the steps in the information processing method as described in any one of claims 5 to 9.

13. A readable storage medium for storing a program, characterized in that, When the program is executed by the processor, it implements the steps in the transmission power determination method as described in any one of claims 1 to 4; Or, the steps in the information processing method as described in any one of claims 5 to 9.

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