Method, apparatus and electronic device for controlling terminal transmit power

Abstract

The embodiment of the present disclosure provides a method for controlling terminal transmitting power applied to the terminal side and the base station side, comprising: receiving signaling containing a power adjustment parameter sent by a base station, wherein the power adjustment parameter is used for an intrinsically safe terminal to determine transmitting power of sending random access information; obtaining the power adjustment parameter; and determining the transmitting power of sending the random access information based on the power adjustment parameter in the case that the current terminal meets the intrinsically safe terminal condition. Through the technical scheme of the embodiment of the present disclosure, the intrinsically safe terminal determines the transmitting power of sending the random access information according to the configuration of the cell level, which can reduce the risk of exceeding the safe power consumption due to the increase of the transmitting power in the random access process, thereby improving the safety and stability of the system.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication technologies, and more specifically, to a method, device, electronic device, and medium for controlling terminal transmit power. Background Art

[0002] In the fourth generation mobile communication system (LTE, Long Term Evolution) and the fifth generation mobile communication system (NR, New Radio), the terminal equipment (UE, User Equipment) obtains the configuration information of the cell under the target base station through the random access channel (RACH, Random Access Channel). Currently, the random access mechanism can be divided into two types: one is contention-based random access (CBRA, Contention-Based Random Access) and the other is non-contention random access (CFRA, Contention-Free Random Access). The information exchange process of these two random access is as follows Figure 1 shown.

[0003] In the Rel.16 NR system, a 2-step RACH process is introduced. Different from the CFRA in the Rel.15 NR system, the 2-step RACH process actually combines msg.1 and msg.3 in the traditional RACH process into msg.A, and combines msg.2 and msg.4 into msg.B. This design reduces the number of signaling interactions between the base station and the terminal device, and reduces the delay for the terminal device to access the cell under the target base station. The interaction process is as follows: Figure 2 shown. Figure 3 In the RACH Response (RAR) feedback from the base station, there are two types: "FallbackRAR" and "SuccessRAR". That is, when the base station feedbacks "FallbackRAR" to the terminal device, the terminal device will resend the Physical Uplink Shared Channel (PUSCH) information in msg.A. When the base station feedbacks "SuccessRAR" to the terminal device, it means that the terminal device has successfully accessed the target cell of the base station.

[0004] The "intelligent mine" system constructed by using 5G technology in the mining industry becomes a vertical industry of 5G application. The "intelligent mine" system needs to apply various communication processes specified by 5G technology and protocols, but due to the particularity of the application environment, the terminal equipment in the system needs to meet a certain explosion-proof type of electrical equipment, which is called intrinsically safe type (referred to as intrinsically safe type) requirement, that is, the electric spark or heat effect energy generated by the internal connection wire of the device and exposed to the potentially explosive environment is limited to a level that cannot ignite, mainly reflected in power consumption. In general, the power consumption of the intrinsically safe type circuit needs to be less than 18W. In some scenarios, the power consumption of the intrinsically safe type circuit should be controlled within 4W.

[0005] However, for the intrinsically safe type terminal (hereinafter referred to as intrinsically safe type terminal) residing in the 5G cell, increasing the transmission power in the random access stage will improve the access success rate, but the increased transmission power will also bring the risk of excessive power consumption, which may exceed the safety range requirement at some moment. On the other hand, in the "intelligent mine" system, there are intrinsically safe type terminals provided by different manufacturers, and it is difficult to implement a power adaptation scheme for each manufacturer's terminal. Therefore, a control scheme for providing transmission power for the intrinsically safe type terminal is needed. SUMMARY

[0006] To solve the problems in the related art, the embodiments of the present disclosure provide a terminal-side method and a base station-side method for controlling terminal transmission power, corresponding terminal-side and base station-side devices, electronic equipment and media.

[0007] In one aspect of the present disclosure, a method for controlling transmission power is provided, applied to the terminal side, comprising:

[0008] receiving signaling containing a power adjustment parameter sent by a base station, the power adjustment parameter being used by the intrinsically safe type terminal to determine the transmission power of sending random access information;

[0009] obtaining the power adjustment parameter;

[0010] determining the transmission power of sending the random access information based on the power adjustment parameter in the case that the current terminal meets the intrinsically safe type terminal condition.

[0011] According to the embodiments of the present disclosure, the power adjustment parameter is a value not greater than 23dBm, the transmission power is P, and the determination of the transmission power of sending the random access information based on the power adjustment parameter comprises:

[0012] P = min{P m ,P T + P L ,A}, wherein,

[0013] the parameter Pm a maximum power value allowed by the base station for any terminal to transmit on the uplink carrier of the current cell, parameter P T a target power value of random access information expected to be received by the base station, parameter P L a compensation value for the path loss of the current carrier, parameter A, and the value of A is the power adjustment parameter.

[0014] According to the embodiment of the present disclosure, the transmission power is P, and the determining the transmission power of the sending random access information based on the power adjustment parameter comprises:

[0015] P = min{P m2 ,P T + P L}, wherein,

[0016] the parameter P m2 a maximum power value allowed by the base station for the intrinsic safety terminal to transmit on the uplink carrier of the current cell, parameter P m2 is determined based on the power adjustment parameter, and satisfies P m2 ≤ 23 dBm;

[0017] the parameter P T a target power value of random access information expected to be received by the base station, parameter P L a compensation value for the path loss of the current carrier.

[0018] According to the embodiment of the present disclosure, the power adjustment parameter is a value not greater than 23 dBm, and the parameter P m2 is determined based on the power adjustment parameter, comprising:

[0019] the parameter P m2 takes an upper limit value of P H , and the determination manner of the upper limit value P H2 is P H2 = min{P E ,P C - ΔP C , B}, wherein,

[0020] the parameter P E is a maximum transmission power value indicated by a high layer of the terminal, parameter P C is a maximum transmission power value of the terminal under a current power class, parameter ΔP C is a power backoff value; and the value of parameter B is the power adjustment parameter.

[0021] According to the embodiment of the present disclosure, the power adjustment parameter is a flag indicating that the intrinsic safety terminal enables a second configuration, and the parameter P m2 is determined based on the power adjustment parameter, comprising:

[0022] In the case of starting the second configuration according to the indication of the power adjustment parameter, the parameter P m2 The upper limit of the value is P H2 , the upper limit value P H2 The method for determining P H2 =min{P E ,P C -ΔP C2}, where the parameter ΔP C2 The parameter ΔP is the power fallback value applicable to intrinsically safe terminals. C2 Determined based on the second configuration.

[0023] According to an embodiment of the present disclosure, the parameter ΔP C2 Determining based on the second configuration includes:

[0024] When the power category of the intrinsically safe terminal is 2, ΔP C2 =6dB;

[0025] When the power category of the intrinsically safe terminal is 1.5, and P E When ≤23dBm, ΔP C2 =9dB;

[0026] When the power category of the intrinsically safe terminal is 1.5, and P E When configured to any value between 23dBm and 26dBm, ΔP C2 =6dB;

[0027] When the intrinsically safe terminal supports the supplementary uplink transmission mode and the power category is 2, ΔP C2 =6dB.

[0028] According to an embodiment of the present disclosure, the parameter ΔP C2 Determined based on the second configuration, including: ΔP C2 =(3dB+D)dB, where

[0029] When the power category of the intrinsically safe terminal is 2, the value of parameter D is any value in the set {1dB, 2dB, 3dB};

[0030] When the power category of the intrinsically safe terminal is 1.5, and P E When the value of parameter D is less than or equal to 23dBm, the value of parameter D is any value in the set {1dB, 2dB, 3dB, 4dB, 5dB, 6dB};

[0031] When the power category of the intrinsically safe terminal is 1.5, and P EThe parameter D is configured as any value between 23 dBm and 26 dBm, and the value of the parameter D is any value in the set {1 dB, 2 dB, 3 dB};

[0032] When the intrinsic safety terminal supports the supplementary uplink transmission mode, and the power class is 2, the value of the parameter D is any value in the set {1 dB, 2 dB, 3 dB}.

[0033] According to the embodiment of the present disclosure, the parameter ΔP C Based on the second configuration determination, the parameter ΔP C2 =(3*E) dB, where,

[0034] When the power class of the intrinsic safety terminal is 2, the value of the parameter E is any value in the set {1, 2};

[0035] When the power class of the intrinsic safety terminal is 1.5, and P E ≤ 23 dBm, the value of the parameter E is any value in the set {1, 1.5, 2};

[0036] When the power class of the intrinsic safety terminal is 1.5, and P E is configured as any value between 23 dBm and 26 dBm, the value of the parameter E is any value in the set {1, 2};

[0037] When the intrinsic safety terminal supports the supplementary uplink transmission mode, and the power class is 2, the value of the parameter E is any value in the set {1, 2}.

[0038] According to the embodiment of the present disclosure, the power adjustment parameter is a maximum number of times of lifting power for the intrinsic safety terminal to transmit random access information, and the determination of the power lifting value based on the power adjustment parameter comprises:

[0039] When the condition of lifting power to transmit random access information is met,

[0040] The power lifting value is determined based on the power adjustment parameter, so that the power lifting value is not greater than 4 dB;

[0041] The transmission power of the random access information is determined based on the power lifting value.

[0042] According to the embodiment of the present disclosure, the power adjustment parameter is a maximum number of times of lifting power for the intrinsic safety terminal to transmit random access information, and the determination of the power lifting value based on the power adjustment parameter comprises:

[0043] In the case that the step of each power lifting is 2 dB, the maximum number of times of lifting power for the intrinsic safety terminal to transmit random access information is not more than 2.

[0044] According to an embodiment of the present disclosure, the receiving the signaling containing the power adjustment parameter sent by the base station comprises: receiving the signaling containing the power adjustment parameter sent by the base station through a downlink shared channel.

[0045] According to another aspect of the present disclosure, a method for controlling terminal transmission power is provided, which is applied to a base station side, and comprises:

[0046] determining a power adjustment parameter, the power adjustment parameter being used by an intrinsically safe terminal to determine transmission power for sending random access information;

[0047] sending, through a downlink common channel, signaling containing the power adjustment parameter.

[0048] According to an embodiment of the present disclosure, the downlink common channel is a downlink shared channel.

[0049] According to another aspect of the present disclosure, a device for controlling transmission power is provided, which is applied to a terminal side, and comprises:

[0050] a receiving module configured to receive signaling containing a power adjustment parameter sent by a base station, the power adjustment parameter being used by an intrinsically safe terminal to determine transmission power for sending random access information;

[0051] an obtaining module configured to obtain the power adjustment parameter;

[0052] a determining module configured to, in a case where a current terminal meets an intrinsically safe terminal condition, determine transmission power for sending the random access information based on the power adjustment parameter.

[0053] According to another aspect of the present disclosure, a device for controlling terminal transmission power is provided, which is applied to a base station side, and comprises:

[0054] a determining module configured to determine a power adjustment parameter, the power adjustment parameter being used by an intrinsically safe terminal to determine transmission power for sending random access information;

[0055] a sending module configured to send, through a downlink common channel, signaling containing the power adjustment parameter.

[0056] According to another aspect of the present disclosure, an electronic device is further provided, which comprises:

[0057] one or more processors;

[0058] a memory for storing one or more computer programs,

[0059] wherein when the one or more computer programs are executed by the one or more processors, the one or more processors implement the method as described above.

[0060] Another aspect of the present disclosure also provides a computer readable storage medium having stored thereon executable instructions that, when executed by a processor, cause the processor to implement a method as described above.

[0061] According to the technical scheme provided in the embodiments of the present disclosure, in a serving cell, the intrinsically safe terminal determines the transmission power of the random access information according to the cell-level configuration, which can reduce the risk that the circuit power consumption of the terminal exceeds the safe range in this link, thereby improving the safety and stability of the system. On the other hand, the base station transmits the configuration-related parameters, which can control the transmission power of all intrinsically safe terminals under the cell, thereby reducing the complexity of implementation.

[0062] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0063] Other features, objects, and advantages of the present disclosure will become more apparent from the following detailed description when read in conjunction with the accompanying drawings, in which:

[0064] Figure 1 An information flow diagram of a random access procedure in wireless communication is shown;

[0065] Figure 2 An information flow diagram of another random access procedure in wireless communication is shown;

[0066] Figure 3 A schematic diagram of an application scenario of a method for controlling terminal transmission power provided by the embodiments of the present disclosure is schematically shown;

[0067] Figure 4 A flowchart of a terminal-side method for controlling terminal transmission power provided by the embodiments of the present disclosure is schematically shown;

[0068] Figure 5 A block diagram of a terminal-side device for controlling terminal transmission power provided by the embodiments of the present disclosure is schematically shown;

[0069] Figure 6 A flowchart of a base station-side method for controlling terminal transmission power provided by the embodiments of the present disclosure is schematically shown;

[0070] Figure 7 A block diagram of a base station-side device for controlling terminal transmission power provided by the embodiments of the present disclosure is schematically shown;

[0071] Figure 8 A block diagram of an electronic device according to the embodiments of the present disclosure is schematically shown; and

[0072] Figure 9A block diagram of a computer system suitable for implementing various methods provided according to embodiments of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0073] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so as to be easily implemented by those skilled in the art. Also, portions unrelated to describing the exemplary embodiments are omitted in the accompanying drawings for the sake of clarity.

[0074] In the present disclosure, it should be understood that terms such as "include" or "have" are intended to indicate that there are features, numbers, steps, actions, components, parts or combinations thereof disclosed in the specification, and do not exclude the possibility of adding one or more other features, numbers, steps, actions, components, parts or combinations thereof.

[0075] It is additionally noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0076] In the process of establishing RRC connection with the base station by the terminal through the random access (RACH) procedure, whether it is the traditional RACH procedure under the Rel.15 NR system, such as Figure 1 , or the newly introduced 2-step RACH procedure under the Rel.16 NR system architecture, such as Figure 2 , the terminal device will appear the phenomenon of competition failure when initiating random access to the base station. Based on this, in the LTE and NR systems, the mechanism of power ramping is set, that is, when the terminal device cannot receive the feedback information from the base station, such as msg.2 / msg.4 / msg.B, the terminal will lift the transmission power again to access within the preset time period and the number of attempts to improve the success rate of accessing the cell of the target base station.

[0077] Current intrinsically safe terminals support many bandwidths (Bands), including n78 and n79. For intrinsically safe terminals operating at n79, the maximum transmit power configured can be 23dBm (power class 3). Taking into account the 3dB antenna gain, the total transmit power in the single-channel case is 26dBm. The inventors of this application found that when the terminal sends msg.1, if power ramping is taken into account, there can be a maximum of 6dB of power superposition, and the maximum transmit power at this time can reach 32dBm, that is, 1.6W. Adding the 3W power set by the main control chip itself, the total power of the circuit equipped with the intrinsically safe terminal can reach 4.6W. This is also the main reason why the intrinsically safe terminal suddenly has high power at a certain moment before establishing an RRC connection with the base station. Even if this phenomenon only occurs once, the risk it causes is unacceptable. Therefore, it is necessary to take technical measures to control the transmit power of the terminal in the random access process.

[0078] Based on this, the present disclosure proposes a technical solution for controlling the transmission power of the terminal to ensure that the power consumption of the intrinsically safe circuit is always within a safe range.

[0079] Figure 3 This is a schematic diagram of an application scenario of the method for controlling terminal transmission power provided by an embodiment of the present disclosure. It should be noted that, Figure 3 The examples shown are merely application scenarios of the method for controlling terminal transmit power according to an embodiment of the present disclosure, to help those skilled in the art understand the technical content of the present disclosure, but do not mean that the method according to the embodiment of the present disclosure cannot be applied to other scenarios.

[0080] like Figure 3 As shown, the scenario includes a base station 300 , an intrinsically safe terminal 310 , and a non-intrinsically safe terminal 320 .

[0081] When an intrinsically safe terminal 310 initiates a random access (RACH) call to the base station of its serving cell, it first synchronizes with base station 300. During this process, it receives signaling from base station 300, obtains the necessary cell configuration parameters and the power adjustment parameter assigned to the intrinsically safe terminal by base station 300, and then sends random access information, i.e., a preamble, to initiate access. This power adjustment parameter is not effective for non-intrinsically safe terminals 320 in the current cell, and non-intrinsically safe terminals 320 perform random access as usual.

[0082] When the base station supports random access of intrinsically safe terminals, the base station can adjust the power of the intrinsically safe terminals to ensure that the transmission power of the intrinsically safe terminals does not exceed the safety range. The following describes the technical solution of the present disclosure in detail according to the implementation methods on the terminal side and the base station side.

[0083] (1) Implementation Method on the Terminal Side

[0084] In one aspect of the embodiment of the present disclosure, a terminal side method for controlling the transmission power of a terminal is provided. Figure 4 The method of controlling the transmission power of the terminal is described below.

[0085] Figure 4 The flowchart of the terminal side method for controlling transmit power of the terminal proposed in accordance with an embodiment of the present disclosure is schematically shown.

[0086] like Figure 4 As shown, the method includes operations S410 to S430.

[0087] In operation S410, information including a power adjustment parameter sent by a base station is received. The power adjustment parameter is used by an intrinsically safe terminal to determine a transmit power for sending random access information.

[0088] In operation S420, the power adjustment parameter is acquired.

[0089] In operation S430, if the current terminal meets the intrinsically safe terminal condition, the transmit power for sending random access information is determined based on the power adjustment parameter.

[0090] Through the technical solutions of the disclosed embodiments, within a serving cell, intrinsically safe terminals determine the transmit power for sending random access information based on cell-level configuration, reducing the risk of terminal circuit power consumption exceeding safe limits during this process, thereby improving system security and stability. Furthermore, by transmitting configuration-related parameters through the base station, the transmit power of all intrinsically safe terminals in the cell can be controlled, reducing implementation complexity.

[0091] To facilitate the implementation of the technical solutions disclosed herein in conjunction with 5G communication protocols, the following description and explanation are based on the formulas and parameter definitions in the standard protocols. The referenced standard protocols include TS38.101-1 (h60), TS38.213 (h20), TS38.321 (h10), and TS38.331 (h00).

[0092] Implementation Method 1

[0093] According to the technical solution of the embodiment of the present disclosure, the power adjustment parameter is a value not greater than 23dBm, the transmission power of the random access information determined by the intrinsically safe terminal is P, and P=min{P m ,P T +P L ,A}, where the parameter P m The parameter P is the maximum power value that the base station allows any terminal to transmit on the uplink carrier of the current cell. T The target power value of the random access information that the base station expects to receive, parameter PL is a compensation value for the current carrier path loss; parameter A is a power adjustment parameter applicable to intrinsic safety terminals, i.e., a value not greater than 21 dBm. When determining parameters P m , P T , and P L , some configuration parameters may also need to be obtained by acquiring signaling sent by the base station, which can be executed in the original manner.

[0094] The transmission power of the intrinsic safety terminal is controlled by parameter A to meet the requirements of intrinsic safety, and the transmission power is within the safe range. The base station gives the power adjustment parameter to the intrinsic safety terminal in the cell through cell-level signaling, without the need for the terminal to optimize and implement it, thereby simplifying the complexity of the system.

[0095] For example, in the standard protocol of 5G, when the terminal sends msg.1 (i.e., random access information) in the RACH process, the transmission power of the signal is determined by formula (1). When the base station supports the random access of the intrinsic safety terminal, the intrinsic safety terminal is allowed to determine the transmission power according to configuration formula (2), wherein the value of parameter A is the power adjustment parameter sent by the base station.

[0096] P PRACH，b，c (i) = min{P CMAX，f，c (i), P PRACH，target，f，c + PL b，f，c} dBm (1) P PRACH,b,f,c i = min{P CMAX,f,c i,P PRACH,target,f,c + PL b,f,c , A} dBm (2)

[0097] The correspondence between the parameters in the above formula and the parameters in the embodiments of the technical solution of the present disclosure is as follows: P PRACH,b,f,c (i) is the transmission power P determined at the current moment in the technical solution of the present disclosure, P CMAX,f,c (i) is P at the current moment in the technical solution of the present disclosure m , P PRACH,target,f,c is P at the current moment in the technical solution of the present disclosure T , PL b,f,c , is P at the current moment in the technical solution of the present disclosure L . In the following embodiments, if not specifically stated, they all have the parameter correspondence.

[0098] The terminal can obtain the configuration information of parameter A by demodulating the RRC signaling (such as SIB1 information). For the intrinsic safety terminal device, when it demodulates the power adjustment parameter, the power adjustment parameter is assigned to parameter A, and formula (2) is used to limit the maximum transmission power of sending msg.1. The non-intrinsic safety terminal device continues to use formula (1) to limit the maximum transmission power of sending msg.1. In addition, if there is a "missed detection", i.e., due to some objective factors, such as poor channel state, so that the intrinsic safety terminal cannot correctly demodulate the power adjustment parameter, the intrinsic safety terminal can still use formula (1) to limit the maximum transmission power of sending msg.1. At this time, the intrinsic safety terminal defaults that the target cell under the base station does not support access of terminals of different types.

[0099] In some scenarios, the base station can place the power adjustment parameter in other system message blocks (e.g., SIBx). The intrinsically safe terminal obtains the power adjustment parameter by obtaining the SIBx information. Before obtaining the power adjustment parameter, the intrinsically safe terminal can use formula (1) to limit the maximum transmit power for sending msg.1.

[0100] Intrinsically safe terminals can also determine the value of parameter A based on their own circuit characteristics and limit the maximum transmit power for sending msg.1 according to formula (2). Other parameters can be based on the parameters specified in the original protocol. This approach has minimal impact on the base station and other terminals.

[0101] Implementation Method 2

[0102] According to the technical solution of the embodiment of the present disclosure, the power of the intrinsically safe terminal transmitting random access information is P, and P=min{P m2 ,P T +P L}, where parameter P m2 The parameter P is the maximum power value that the base station allows the intrinsically safe terminal to transmit on the uplink carrier of the current cell. m2 Based on the power adjustment parameter determination, the parameter P T The target power value of the random access information that the base station expects to receive, parameter P L is the compensation value for the current carrier path loss; the terminal determines the parameter P m2 、P T and P L When performing the configuration, some configuration parameters may still need to be obtained by signaling sent by the base station and can be executed in the original way.

[0103] In this embodiment, the parameter P m2 The value of the intrinsically safe terminal is used to limit the transmission power P of the intrinsically safe terminal. Since the intrinsically safe terminal cannot send any signal higher than the parameter P m2 Therefore, the base station's configuration of this parameter can also control the transmit power of intrinsically safe terminals in other scenarios to meet explosion-proof requirements. Without transmit power adjustment, the maximum transmit power of non-intrinsically safe terminals can exceed 23dBm, even reaching 26dBm. The technical solution of the disclosed embodiments adjusts the maximum transmit power of intrinsically safe terminals through the base station to no more than 23dBm, thus meeting intrinsically safe requirements.

[0104] According to an embodiment of the present disclosure, the parameter P m2 It is determined by limiting the value range of the power adjustment parameter. For example, when P L ≤P m2 ≤P H2 , then reduce P m2An upper limit value P H2 The transmitting power determined by the intrinsic safety terminal can be controlled within a safety range.

[0105] In some scenarios, the power adjustment parameter sent by the base station is a value not greater than 23 dBm, and in this case, the upper limit value P m2 of the parameter P H2 may be determined as P H2 = min{P E , P C - ΔP C , B}, where P E is a maximum transmitting power value of the terminal indicated by a high layer of the terminal, P C is a maximum transmitting power value of the terminal under a current power class, ΔP C is a power backoff value, and B is the power adjustment parameter sent by the base station. The values of other parameters such as P E , P C , and ΔP C may be determined by acquiring signaling sent by the base station and performing original operations.

[0106] In this embodiment, the upper limit value of the parameter P m2 is limited by the parameter B, and the situation that the value of P m2 exceeds the safety range of the intrinsic safety terminal can be avoided. Of course, the value of the parameter B can be determined by signaling sent by the base station, or can be calculated in real time according to the circuit characteristics of the intrinsic safety terminal or set as a fixed empirical value, for example, 23 dBm or 21 dBm, and in this case, the value of the parameter B can be determined by the terminal itself.

[0107] For example, in the standard protocol of 5G, when the terminal sends msg.1 (i.e., random access information) in the RACH process, the transmitting power of the signal is determined by formula (1), and the transmitting power is related to the parameters P CMAX,f,c and P PRACH,target,f,c + PL b,f,c , where the calculation of the parameter P CMAX,f,c is based on formulas (3), (4), and (5).

[0108]

[0109] Based on this, when the technical solution of the embodiment of the present disclosure is applied, the upper limit value of the parameter P CMAX,f,c may be determined according to formula (6), where the unit of the parameter B is dBm, and the configuration of the power adjustment parameter can be a value less than 23 dBm, for example, 21 dBm.

[0110] P CMAX_H,f,c = MIN{P EMAX,c ,P PowerClass - ΔP PowerClass , B} (6)

[0111] The parameter in the formula in the above protocol corresponds to the parameter in the embodiment of the technical solution of the present disclosure as follows: P CMAX_H,f,c P in the technical solution of the present disclosure H2 P EMAX,c P in the technical solution of the present disclosure E P PowerClass P in the technical solution of the present disclosure C ΔP PowerClas ΔP in the technical solution of the present disclosure C The parameter correspondence is as above in the following embodiments unless otherwise specified.

[0112] The terminal can obtain the configuration information of the parameter B by demodulating the RRC signaling (such as SIB1 information). For the intrinsic safety terminal, when it demodulates the power adjustment parameter, the configuration of the parameter B is obtained, and the maximum transmission power for sending msg.1 is limited by using the formulas (1), (3), (4), (6). The non-intrinsic safety terminal uses the formulas (1), (3), (4), (5) to limit the maximum transmission power for sending msg.1. In addition, if “miss detection” occurs, the intrinsic safety terminal can still use the formulas (1), (3), (4), (5) to limit the maximum transmission power for sending msg.1. At this time, the intrinsic safety terminal defaults that the target cell under the base station does not support the access of distinguishing the terminal type.

[0113] The base station can place the power adjustment parameter in other system information blocks (such as SIBx), and the intrinsic safety terminal obtains the power adjustment parameter by obtaining the SIBx information. Before obtaining the power adjustment parameter, the intrinsic safety terminal can continue to limit the maximum transmission power for sending msg.1 by using the formulas (1), (3), (4), (5).

[0114] In other scenarios, the power adjustment parameter sent by the base station is a flag indicating that the intrinsic safety terminal enables the second configuration. At this time, the parameter P m2 The determination mode based on the power adjustment parameter is that when the base station indicates that the intrinsic safety terminal enables the second configuration, the intrinsic safety terminal determines the upper limit value P m2 of the parameter P H2 = min{P E , P C - ΔP C2}, wherein ΔP C2 is a power backoff value applicable to the intrinsic safety terminal. The parameter ΔP C2 is determined according to the second configuration. For example, when the power adjustment parameter sent by the base station is to allow the intrinsic safety terminal to enable the second configuration, the intrinsic safety terminal determines the parameter ΔP C2When the base station does not send the indication mark of the power adjustment parameter or marks it as not allowed, the intrinsic safety terminal determines the power backoff value according to the same configuration as the non-intrinsic safety terminal.

[0115] In this embodiment, the second configuration sets different power backoff values for the power class of the intrinsic safety terminal, so as to limit the transmission power of the intrinsic safety terminal within a safe range. The definition and limitation of the power class in this embodiment are consistent with the existing standard protocol, and thus are not described herein.

[0116] Further, the intrinsic safety terminal determines the value of the parameter ΔP C2 in the following ways.

[0117] (1) The first way

[0118] When the power class of the intrinsic safety terminal is 2, ΔP C2 = 6 dB;

[0119] When the power class of the intrinsic safety terminal is 1.5, and P E ≤ 23 dBm, ΔP C2 = 9 dB;

[0120] When the power class of the intrinsic safety terminal is 1.5, and P E is configured to be any value between 23 dBm and 26 dBm, ΔP C2 = 6 dB;

[0121] When the intrinsic safety terminal supports the supplementary uplink transmission mode, and the power class is 2, ΔP C2 = 6 dB.

[0122] (2) The second way, ΔP C2 = (3 dB + D) dB, where,

[0123] When the power class of the intrinsic safety terminal is 2, the parameter D takes any value in the set {1 dB, 2 dB, 3 dB};

[0124] When the power class of the intrinsic safety terminal is 1.5, and P E ≤ 23 dBm, the parameter D takes any value in the set {1 dB, 2 dB, 3 dB, 4 dB, 5 dB, 6 dB};

[0125] When the power class of the intrinsic safety terminal is 1.5, and P E is configured to be any value between 23 dBm and 26 dBm, the parameter D takes any value in the set {1 dB, 2 dB, 3 dB};

[0126] When the intrinsic safety terminal supports the supplementary uplink transmission mode and the power category is 2, the parameter D takes any value in the set {1dB, 2dB, 3dB}.

[0127] In this embodiment, different granularity of power backoff values are set according to different power categories of the terminal, and the transmission power of the intrinsic safety terminal can also be limited within a safe range.

[0128] (3) The third mode, ΔP C2 = (3*E) dB, where,

[0129] When the power category of the intrinsic safety terminal is 2, the parameter E takes any value in the set {1, 2};

[0130] When the power category of the intrinsic safety terminal is 1.5 and P E ≤ 23dBm, the parameter E takes any value in the set {1, 1.5, 2};

[0131] When the power category of the intrinsic safety terminal is 1.5 and P E is configured to be any value between 23dBm and 26dBm, the parameter E takes any value in the set {1, 2};

[0132] When the intrinsic safety terminal supports the supplementary uplink transmission mode and the power category is 2, the parameter E takes any value in the set {1, 2}.

[0133] In this embodiment of the scenario, the second configuration is set according to the power category of the intrinsic safety terminal to limit the power backoff value applicable to the intrinsic safety terminal, and the transmission power of the intrinsic safety terminal can also be limited within a safe range.

[0134] For example, in the standard protocol of 5G, when the terminal transmits msg.1 (i.e., random access information) in the RACH process, the transmission power of the signal is determined by formulas (1), (3), (4), and (5). ΔP PowerClass in formula (5) is ΔP C2 in the embodiment of the present disclosure. The intrinsic safety terminal can determine ΔP PowerClass in formula (5) by combining its own characteristics with the signaling sent by the base station. For example, in some scenarios, the intrinsic safety terminal determines in the manner of ΔP PowerClass = (3dB + D) dB. Alternatively, in some scenarios, the intrinsic safety terminal determines in the manner of ΔP PowerClass = (3*E) dB. Through such a setting manner, the upper limit value of the parameter P m2 can be limited, so that the transmission power of the intrinsic safety terminal is limited within a safe range.

[0135] Embodiment 3

[0136] The embodiment further limits the power control scheme when the terminal needs to perform power ramping multiple times to attempt access in the random access procedure.

[0137] On the basis of embodiment 1, further, in operation S430, when the condition of sending random access information with power ramping is met, a power ramping value is determined based on the power adjustment parameter, so that the power ramping value is not greater than 4dB; and the transmission power for sending the random access information is determined based on the power ramping value.

[0138] According to the embodiment of the present disclosure, if the intrinsic safety terminal does not successfully receive information (such as msg.2, msg.4, or msg.B) sent by the base station within a preset time period, the intrinsic safety terminal re-attempts access by sending random access information (such as msg.1 or msg.A) again through power ramping. When the intrinsic safety terminal re-attempts, the upper limit of the number of attempts or the power ramping step each time can be different from that of the non-intrinsic safety terminal. For example, the upper limit of the number of attempts of the non-intrinsic safety terminal is 3 times, and the number of attempts of the intrinsic safety terminal is 2 times, which is indicated by the power adjustment parameter sent by the base station. For another example, the maximum power ramping step of the non-intrinsic safety terminal is 6dB, and the maximum power ramping step of the non-intrinsic safety terminal is 2dB. In this way, the situation that the power ramping value exceeds the safe range due to multiple attempts of the intrinsic safety terminal in a poor access environment can be avoided.

[0139] When power ramping is needed to attempt re-access in the random access procedure, the upper limit of the number of attempts and the power ramping step can be set with two sets of configurations. The default configuration is the configuration specified in the existing protocol, and the second configuration is provided for the intrinsic safety terminal. The power adjustment parameter sent by the base station is used as an indication to allow the intrinsic safety terminal to enable the second configuration. Under the second configuration, the total power ramping value of the intrinsic safety terminal can be ensured to be not more than 4dB even if power ramping is needed for re-access, thereby preventing the phenomenon of power exceeding the safe range in the random access process.

[0140] For example, in the 5G standard protocol, the power ramping step is reflected in the parameter P PRACH,target,f,c For a non-intrinsic safety terminal device, the parameter can be calculated according to formula (8), where PREAMBLE_POWER_RAMPING_STEP is the power ramping step each time, and PREAMBLE_POWER_RAMPING_COUNTER is the maximum number of times of re-access with power ramping. For an intrinsic safety terminal device, the power ramping step or the maximum number of times can be assigned a lower value when calculating P PRACH,target,f,c , so as to ensure that the total power ramping value is not more than 4dB.

[0141]

[0142] In addition, when the event of switching the random access type of the terminal from the 2-step RACH to the 4-step RACH occurs, a power offset POWER OFFSET 2STEP RA is set to compensate for the power boosting amount of the inherited msg.A preamble sequence. For the intrinsic safety type terminal, the compensation amount of the power offset can be further reduced to avoid the case of excessive power of the intrinsic safety type terminal. The values of these parameters can be limited by the second configuration applicable to the intrinsic safety type terminal.

[0143] Based on the same inventive concept, the disclosure also provides a terminal-side device for controlling the transmission power of the terminal. The following refers to the drawings Figure 5 The device 500 for controlling the transmission power of the terminal applied to the terminal side of the embodiment of the disclosure is described.

[0144] Figure 5 The block diagram of the terminal-side device 500 for controlling the transmission power of the terminal provided by the embodiment of the disclosure is schematically shown. The device 500 can be realized by software, hardware or a combination of both to become part or all of an electronic device.

[0145] As shown in the figure, the terminal-side device 500 for controlling the transmission power of the terminal includes a receiving module 510, an obtaining module 520 and a determining module 530. The device 500 can perform various methods described above. Figure 5 The receiving module 510 is configured to receive the signaling containing the power adjustment parameter sent by the base station, which is used by the intrinsic safety type terminal to determine the transmission power of sending the random access information.

[0146] The obtaining module 520 is configured to obtain the power adjustment parameter.

[0147] The determining module 530 is configured to determine the transmission power of sending the random access information based on the power adjustment parameter in the case that the current terminal meets the intrinsic safety type terminal condition.

[0148] Through the technical solutions of the embodiment of the disclosure, the intrinsic safety type terminal determines the transmission power of sending the random access information according to the cell-level configuration in the serving cell, which can reduce the risk caused by the transmission power exceeding the safety specification of the intrinsic safety type in the random access process, thereby ensuring the safety and stability of the system. On the other hand, the relevant parameters are sent by the base station, which can control the transmission power of the intrinsic safety type terminal under the cell, thereby reducing the complexity of implementation.

[0149] (II) Base station side implementation

[0150]

[0151] ​Another aspect of the present disclosure provides a base station side method for controlling the terminal transmission power. Figure 6 The base station side method of controlling the terminal transmission power is described below.

[0152] Figure 6 The flowchart of the method for a base station to control the transmission power of a terminal proposed in an embodiment of the present disclosure is schematically shown.

[0153] like Figure 6 As shown, the method includes operations S610 to S620.

[0154] In operation S610, a power adjustment parameter is determined, where the power adjustment parameter is used by an intrinsically safe terminal to determine a transmit power for sending random access information.

[0155] In operation S620, a signaling including the power adjustment parameter is sent via a downlink common channel.

[0156] According to the technical solution of the embodiment of the present disclosure, in operation S620, the downlink common channel may be a downlink shared channel.

[0157] The power adjustment parameters sent by the base station can be configured based on cell planning or characteristics, for example, only providing the above configuration for cells in mining environments. When the base station supports random access for intrinsically safe terminals, the base station will also adjust the cell-level planning based on the corresponding power adjustment parameters, such as improving base station sensitivity and providing low-contention access configurations to support access for intrinsically safe terminals.

[0158] For the application of the power adjustment parameters sent by the base station, please refer to the aforementioned terminal side method, which will not be repeated here.

[0159] Through the technical solution of the embodiments of the present disclosure, the base station decides whether to support random access of intrinsically safe terminals in the current cell according to the configuration, thereby providing unified power control to the intrinsically safe terminals in the cell and reducing the complexity of implementation.

[0160] Based on the same inventive concept, the present disclosure also provides a base station side device for controlling terminal transmit power.

[0161] Figure 7 The block diagram of a base station side apparatus 700 for controlling terminal transmit power according to an embodiment of the present disclosure is schematically shown. The apparatus 700 can be implemented as part or all of an electronic device through software, hardware, or a combination of both.

[0162] like Figure 7 As shown, the apparatus 700 includes a determining module 710 and a sending module 720. The apparatus 700 can execute the various methods described above.

[0163] The determining module 710 is configured to determine a power adjustment parameter, which is used by the intrinsic safety terminal to determine a transmission power for sending random access information.

[0164] The sending module 720 is configured to send signaling containing the power adjustment parameter through a downlink common channel.

[0165] According to the technical solutions of the embodiments of the present disclosure, the base station determines whether the random access of the intrinsic safety terminal is supported in the current cell according to the configuration, thereby providing unified power control for the intrinsic safety terminal in the cell, and reducing the complexity of implementation.

[0166] The present disclosure also discloses an electronic device, Figure 8 A block diagram of an electronic device according to an embodiment of the present disclosure is shown.

[0167] As Figure 8 shown, the electronic device 800 includes a memory 801 and a processor 802, wherein the memory 801 is configured to store a program supporting the electronic device to perform the method of controlling the terminal transmission power in any of the above terminal side or base station side embodiments, and the processor 802 is configured to execute the program stored in the memory 801.

[0168] Figure 9 A block diagram of a computer system 900 suitable for implementing the above-described methods according to an embodiment of the present disclosure is shown.

[0169] As Figure 9 shown, the computer system 900 includes a processing unit 901, which can perform various processes in the above embodiments according to the program stored in a read-only memory (ROM) 902 or the program loaded from a storage portion 908 into a random access memory (RAM) 903. In the RAM 903, various programs and data required for the operation of the system 900 are also stored. The processing unit 901, the ROM 902, and the RAM 903 are connected to each other through a bus 904. An input / output (I / O) interface 905 is also connected to the bus 904.

[0170] The following components are connected to the I / O interface 905: an input section 906 including a keyboard, a mouse, etc.; an output section 907 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 908 including a hard disk, etc.; and a communication section 909 including a network interface card such as a LAN card, a modem, etc. The communication section 909 performs communication processing via a network such as the Internet. A drive 910 is also connected to the I / O interface 905 as necessary. A removable media 911 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 910 as necessary, so that a computer program read out therefrom is installed in the storage section 908 as necessary. Among them, the processing unit 901 can be implemented as a CPU, a GPU, a TPU, a FPGA, a NPU, etc.

[0171] In particular, the method described above can be implemented as a computer software program according to embodiments of the present disclosure. For example, embodiments of the present disclosure include a computer program product comprising a computer program tangibly embodied on a non-transitory computer readable medium, the computer program containing program code for executing the methods described above. In such embodiments, the computer program can be downloaded and installed from a network via the communication section 909, and / or installed from the removable media 911.

[0172] The flow diagrams and the block diagrams in the drawings are illustrations of possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flow diagrams or block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks may

[0173] The units or modules described in the embodiments of the present disclosure can be implemented by means of software, or by means of programmable hardware. The described units or modules can also be provided in a processor, and the names of these units or modules do not constitute a limitation on the units or modules themselves in some cases.

[0174] As another aspect, the disclosure also provides a computer readable storage medium, which can be the computer readable storage medium contained in the electronic device or the computer system in the above embodiments; or can be a computer readable storage medium existing separately and not assembled into a device. The computer readable storage medium stores one or more programs used by one or more processors to execute the method described in the disclosure.

[0175] The above description is merely the preferred embodiments of the disclosure and the explanation of the principles of the applied technology. It should be understood by those skilled in the art that the inventive scope of the disclosure is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by the combinations of the above technical features or equivalent features without departing from the inventive concept. For example, the technical solutions formed by the mutual replacement of the above features and the technical features disclosed in the disclosure (but not limited to) having similar functions.

Claims

1. A method for controlling terminal transmit power, applied to a terminal side, comprising: receiving signaling including a power adjustment parameter sent by a base station, where the power adjustment parameter is used by the intrinsically safe terminal to determine a transmit power for sending random access information; Obtaining the power adjustment parameter; When the current terminal meets the intrinsically safe terminal condition, the transmit power for sending the random access information is determined based on the power adjustment parameter, the power adjustment parameter is a value not greater than 23 dBm, and the transmit power is P, P=min{P m ,P T +P L ,A}, the value of parameter A is the power adjustment parameter; or P=min{P m2 ,P T +P L }, parameter P m2 The upper limit value is P H2 =min{P E ,P C -ΔP C ,B}, parameter P E The maximum transmit power value indicated by the higher layer of the terminal, parameter P C is the maximum transmit power value of the terminal under the current power category, and the parameter ΔP C is the power fallback value; the value of parameter B is the power adjustment parameter; Among them, the parameter P m The parameter P is the maximum power value that the base station allows any terminal to transmit on the uplink carrier of the current cell. m2 The maximum power value that the base station allows the intrinsically safe terminal to transmit on the uplink carrier of the current cell, parameter P T is the target power value of the random access information that the base station expects to receive, and the parameter P L is the compensation value for the current carrier path loss.

2. The method according to claim 1, wherein The power adjustment parameter is a flag that instructs the intrinsically safe terminal to enable the second configuration. The parameter P m2 Determining based on the power adjustment parameter includes: In the case of starting the second configuration according to the indication of the power adjustment parameter, the parameter P m2 The upper limit of the value is P H2 , the upper limit value P H2 The method for determining P H2 =min{P E ,P C -ΔP C2 }, where the parameter ΔP C2 The parameter ΔP is the power fallback value applicable to intrinsically safe terminals. C2 Determined based on the second configuration.

3. The method according to claim 2, wherein: The parameter ΔP C2 Determining based on the second configuration includes: When the power category of the intrinsically safe terminal is 2, ΔP C2 =6dB; When the power category of the intrinsically safe terminal is 1.5, and P E When ≤23dBm, ΔP C2 =9dB; When the power category of the intrinsically safe terminal is 1.5, and P E When configured to any value between 23dBm and 26dBm, ΔP C2 =6dB; When the intrinsically safe terminal supports the supplementary uplink transmission mode and the power category is 2, ΔP C2 =6dB.

4. The method according to claim 2, wherein: The parameter ΔP C2 Determined based on the second configuration, including: ΔP C2 =(3dB+D)dB, where When the power category of the intrinsically safe terminal is 2, the value of parameter D is any value in the set {1dB, 2dB, 3dB}; When the power category of the intrinsically safe terminal is 1.5, and P E When the value of parameter D is less than or equal to 23dBm, the value of parameter D is any value in the set {1dB, 2dB, 3dB, 4dB, 5dB, 6dB}; When the power category of the intrinsically safe terminal is 1.5, and P E When configured to any value between 23dBm and 26dBm, the parameter D takes any value in the set {1dB, 2dB, 3dB}; When the intrinsically safe terminal supports the supplementary uplink transmission mode and the power category is 2, the value of the parameter D is any value in the set {1dB, 2dB, 3dB}.

5. The method according to claim 2, wherein: The parameter ΔP C Determined based on the second configuration, including: ΔP C2 =(3*E)dB, where When the power category of the intrinsically safe terminal is 2, the value of parameter E is any value in the set {1, 2}; When the power category of the intrinsically safe terminal is 1.5, and P E When ≤23dBm, the value of parameter E is any value in the set {1, 1.5, 2}; When the power category of the intrinsically safe terminal is 1.5, and P E When configured to any value between 23dBm and 26dBm, the parameter E takes any value in the set {1,2}; When the intrinsically safe terminal supports the supplementary uplink transmission mode and the power category is 2, the value of the parameter E is any value in the set {1, 2}.

6. The method according to claim 1, wherein The determining, based on the power adjustment parameter, the transmit power for sending random access information includes: Under the condition of sending random access information with increased power, Determine a power increase value based on the power adjustment parameter so that the power increase value is no greater than 4dB; The transmit power for sending the random access information is determined based on the power boost value.

7. The method according to claim 6, wherein: The power adjustment parameter is a maximum number of times that the intrinsically safe terminal is instructed to increase power to send random access information, and determining the power increase value based on the power adjustment parameter includes: When the step size of each power increase is 2 dB, the maximum number of times the intrinsically safe terminal increases the power to send random access information does not exceed 2.

8. The method according to any one of claims 1 to 7, wherein: The receiving signaling including the power adjustment parameter sent by the base station includes: receiving the signaling including the power adjustment parameter sent by the base station through a downlink shared channel.

9. A method for controlling terminal transmit power, applied to a base station, comprising: Determining a power adjustment parameter, where the power adjustment parameter is used by the intrinsically safe terminal to determine a transmit power for sending random access information; The power adjustment parameter is a value not greater than 23dBm, the transmit power is P, P=min{P m ,P T +P L ,A}, the value of parameter A is the power adjustment parameter; or P=min{P m2 ,P T +P L }, parameter P m2 The upper limit value is P H2 =min{P E ,P C -ΔP C ,B}, parameter P E The maximum transmit power value indicated by the higher layer of the terminal, parameter P C is the maximum transmit power value of the terminal under the current power category, and the parameter ΔP C is the power fallback value; the value of parameter B is the power adjustment parameter; Among them, the parameter P m The parameter P is the maximum power value that the base station allows any terminal to transmit on the uplink carrier of the current cell. m2 The maximum power value that the base station allows the intrinsically safe terminal to transmit on the uplink carrier of the current cell, parameter P T is the target power value of the random access information that the base station expects to receive, and the parameter P L is the compensation value for the current carrier path loss The signaling including the power adjustment parameter is sent through a downlink common channel.

10. The method according to claim 9, wherein: The downlink common channel is a downlink shared channel.

11. A device for controlling terminal transmit power, applied to a terminal side, comprising: a receiving module configured to receive signaling including a power adjustment parameter sent by a base station, wherein the power adjustment parameter is used by the intrinsically safe terminal to determine a transmit power for sending random access information; an acquisition module, configured to acquire the power adjustment parameter; a determining module configured to determine, when the current terminal meets the intrinsically safe terminal condition, a transmit power for sending the random access information based on the power adjustment parameter, wherein the power adjustment parameter is a value not greater than 23 dBm, and the transmit power is P, P=min{P m ,P T +P L ,A}, the value of parameter A is the power adjustment parameter; or P=min{P m2 ,P T +P L }, parameter P m2 The upper limit value is P H2 =min{P E ,P C -ΔP C ,B}, parameter P E The maximum transmit power value indicated by the higher layer of the terminal, parameter P C is the maximum transmit power value of the terminal under the current power category, and the parameter ΔP C is the power fallback value; the value of parameter B is the power adjustment parameter; Among them, the parameter P m The parameter P is the maximum power value that the base station allows any terminal to transmit on the uplink carrier of the current cell. m2 The maximum power value that the base station allows the intrinsically safe terminal to transmit on the uplink carrier of the current cell, parameter P T is the target power value of the random access information that the base station expects to receive, and the parameter P L is the compensation value for the current carrier path loss.

12. A device for controlling terminal transmit power, applied to a base station, comprising: a determining module configured to determine a power adjustment parameter, wherein the power adjustment parameter is used by the intrinsically safe terminal to determine a transmit power for sending random access information; The power adjustment parameter is a value not greater than 23dBm, the transmit power is P, P=min{P m ,P T +P L ,A}, the value of parameter A is the power adjustment parameter; or P=min{P m2 ,P T +P L }, parameter P m2 The upper limit value is P H2 =min{P E ,P C -ΔP C ,B}, parameter P E The maximum transmit power value indicated by the higher layer of the terminal, parameter P C is the maximum transmit power value of the terminal under the current power category, and the parameter ΔP C is the power fallback value; the value of parameter B is the power adjustment parameter; Among them, the parameter P m The parameter P is the maximum power value that the base station allows any terminal to transmit on the uplink carrier of the current cell. m2 The maximum power value that the base station allows the intrinsically safe terminal to transmit on the uplink carrier of the current cell, parameter P T is the target power value of the random access information that the base station expects to receive, and the parameter P L is the compensation value for the current carrier path loss The sending module is configured to send a signaling including the power adjustment parameter through a downlink common channel.

13. An electronic device comprising: one or more processors; a memory for storing one or more computer programs, When one or more computer programs are executed by one or more processors, the one or more processors are enabled to implement the method according to any one of claims 1 to 10.

14. A computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, causes the processor to implement the method according to any one of claims 1 to 10.

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