Random access message transmission method and apparatus, and storage medium

Abstract

The present application is a divisional application of Chinese application 201980001584.5. The present disclosure discloses a random access message transmission method, belonging to the technical field of wireless communication. The method comprises: configuring a terminal with a specified power difference interval; receiving a first random access message sent by the terminal according to a first transmission power, wherein the first transmission power comprises a first power of the first random access message in a physical random access channel (PRACH) and a second power of the first random access message in a physical uplink shared channel (PUSCH), and a power difference between the first power and the second power is within the specified power difference interval. Avoiding the case that the result deviation is large when the base station compensates the reception power of the PUSCH in the MsgA according to the reception of the PRACH in the MsgA, and improving the reception performance of the base station on the PUSCH in the MsgA.

Description

[0001] This application is a divisional application of Chinese application No. 201980001584.5, filed on August 2, 2019, entitled "Random Access Message Transmission Method, Apparatus and Storage Medium". Technical Field

[0002] This disclosure relates to the field of wireless communication technology, and in particular to a random access message transmission method, apparatus and storage medium. Background Technology

[0003] In order to meet the growing communication needs of mobile data, cellular mobile communication technology has evolved into the New Radio (NR) system.

[0004] In NR systems, terminals can initiate access to the base station via a two-step random access method. In related technologies, the first step in initiating two-step random access in an NR system is to send a first random access message (MsgA) to the base station. The MsgA involves the Physical Random Access Channel (PRACH) and the Physical Uplink Shared Channel (PUSCH). Correspondingly, the base station can perform subsequent Automatic Gain Control (AGC) estimation based on the PRACH of the first random access message. Summary of the Invention

[0005] This disclosure provides a method, apparatus, and storage medium for random access message transmission. The technical solution is as follows:

[0006] According to a first aspect of the present disclosure, a random access message transmission method is provided, the method being executed by a base station, the method comprising:

[0007] Configure a specified power difference range for the terminal;

[0008] The terminal receives a first random access message sent at a first transmit power, wherein the first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH), and the power difference between the first power and the second power is within the specified power difference range.

[0009] In one possible implementation, configuring the terminal with a specified power difference range includes:

[0010] A system message indicating the specified power difference range is transmitted via the physical broadcast channel.

[0011] In one possible implementation, the method further includes:

[0012] During the process of receiving the first random access message, the received power of the PUSCH channel of the first random access message is compensated according to the specified power difference range.

[0013] In one possible implementation, the step of compensating the received power of the PUSCH channel of the first random access message according to the specified power difference interval during the reception of the first random access message includes:

[0014] Obtain the power relationship indication information carried in the first random access message, wherein the power relationship indication information is used to indicate the magnitude relationship between the first power and the second power;

[0015] During the process of receiving the first random access message, the received power of the PUSCH channel of the first random access message is compensated according to the specified power difference range and the power relationship indication information.

[0016] In one possible implementation, obtaining the power relationship indication information carried in the first random access message includes:

[0017] The power relationship indication information is obtained from the uplink control information (UCI) in the first random access message.

[0018] In one possible implementation, obtaining the power relationship indication information from the uplink control information (UCI) in the first random access message includes:

[0019] The power relationship indication information is obtained from the uplink control information (UCI) in the PUSCH of the first random access message.

[0020] In one possible implementation, the method further includes:

[0021] When the content of the first random access message in PRACH is successfully parsed, but the parsing of the content of the first random access message in PUSCH fails, a second random access message of the specified type is returned to the terminal.

[0022] The second random access message of the specified type includes a second power adjustment indication, which is used to instruct the terminal to adjust the first transmit power to obtain a second transmit power for retransmitting the first random access message.

[0023] According to a second aspect of the present disclosure, a random access message transmission method is provided, the method being executed by a terminal, the method comprising:

[0024] Obtain the specified power difference range configured for the base station;

[0025] A first random access message is sent to the base station according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within the specified power difference range.

[0026] In one possible implementation, obtaining the specified power difference range configured by the base station includes:

[0027] Receive system messages sent by the base station through the physical broadcast channel;

[0028] Obtain the specified power difference range indicated by the system message.

[0029] In one possible implementation, the first random access message carries power relationship indication information, which is used to indicate the magnitude relationship between the first power and the second power.

[0030] In one possible implementation, the power relationship indication information is located in the uplink control information (UCI) carried in the first random access message.

[0031] In one possible implementation, the power relationship indication information is located in the uplink control information (UCI) carried by the PUSCH in the first random access message.

[0032] In one possible implementation, the second transmission power is obtained when the retransmission condition is met;

[0033] The first random access message is retransmitted using the second transmit power;

[0034] The second transmit power includes the third power of the first random access message in PRACH and the fourth power of the first random access message in PUSCH. The power difference between the third power and the fourth power is within the specified power difference range. The third power is greater than or equal to the first power, and the fourth power is greater than the second power.

[0035] In one possible implementation, obtaining the second transmit power includes:

[0036] Obtain a first power adjustment indication, wherein the first power adjustment indication is an indication configured by system signaling;

[0037] The first transmission power is adjusted according to the first power adjustment instruction to obtain the second transmission power.

[0038] In one possible implementation, obtaining the second transmit power includes:

[0039] When the retransmission condition is that no second random access message is received from the base station within a specified time after the first random access message is sent, a first power adjustment indication is obtained, wherein the first power adjustment indication is an indication configured by system signaling.

[0040] The first transmission power is adjusted according to the first power adjustment instruction to obtain the second transmission power.

[0041] In one possible implementation, obtaining the second transmit power includes:

[0042] When the retransmission condition is that a second random access message of a specified type is received from the base station within a specified time after the first random access message is sent, a second power adjustment indication is obtained, wherein the second power adjustment indication is an indication carried in the second random access message of the specified type.

[0043] The first transmission power is adjusted according to the second power adjustment instruction to obtain the second transmission power.

[0044] In one possible implementation, the method further includes:

[0045] When the retransmission condition is met, if the first power reaches the maximum power of the first random access message in the PRACH, or if the second power reaches the maximum power of the first random access message in the PUSCH, then the transmission beam of the first random access message is switched.

[0046] According to a third aspect of the present disclosure, a random access message transmission apparatus is provided, the apparatus being used in a base station, the apparatus comprising:

[0047] The power difference range configuration module is used to configure a specified power difference range for the terminal;

[0048] The message receiving module is configured to receive a first random access message sent by the terminal according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within the specified power difference range.

[0049] In one possible implementation, the difference interval configuration module is configured to send a system message indicating the specified power difference interval via a physical broadcast channel.

[0050] In one possible implementation, the device further includes:

[0051] The compensation module is used to compensate the received power of the PUSCH channel of the first random access message according to the specified power difference range during the process of receiving the first random access message.

[0052] In one possible implementation, the compensation module includes:

[0053] The indication information acquisition submodule is used to acquire the power relationship indication information carried in the first random access message, wherein the power relationship indication information is used to indicate the magnitude relationship between the first power and the second power;

[0054] The compensation submodule is used to compensate the received power of the PUSCH channel of the first random access message according to the specified power difference range and the power relationship indication information during the process of receiving the first random access message.

[0055] In one possible implementation, the indication information acquisition submodule is used to acquire the power relationship indication information from the uplink control information (UCI) in the first random access message.

[0056] In one possible implementation, the indication information acquisition submodule is used to acquire the power relationship indication information from the uplink control information (UCI) in the PUSCH of the first random access message.

[0057] In one possible implementation, the device further includes:

[0058] The message sending module is used to return a second random access message of a specified type to the terminal when the content of the first random access message in PRACH is successfully parsed, but the parsing of the content of the first random access message in PUSCH fails.

[0059] The second random access message of the specified type includes a second power adjustment indication, which is used to instruct the terminal to adjust the first transmit power to obtain a second transmit power for retransmitting the first random access message.

[0060] According to a fourth aspect of the present disclosure, a random access message transmission apparatus is provided, the apparatus being used in a terminal, the apparatus comprising:

[0061] The difference range acquisition module is used to acquire the specified power difference range configured by the base station;

[0062] A first transmitting module is configured to transmit a first random access message to the base station according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within the specified power difference range.

[0063] In one possible implementation, the difference interval acquisition module includes:

[0064] The system message receiving submodule is used to receive system messages sent by the base station through the physical broadcast channel;

[0065] The difference range acquisition submodule is used to acquire the specified power difference range indicated by the system message.

[0066] In one possible implementation, the first random access message carries power relationship indication information, which is used to indicate the magnitude relationship between the first power and the second power.

[0067] In one possible implementation, the power relationship indication information is located in the uplink control information (UCI) carried in the first random access message.

[0068] In one possible implementation, the power relationship indication information is located in the uplink control information (UCI) carried by the PUSCH in the first random access message.

[0069] In one possible implementation, the device further includes:

[0070] The power acquisition module is used to acquire the second transmission power when the retransmission condition is met;

[0071] The second transmitting module is used to retransmit the first random access message using the second transmitting power;

[0072] The second transmit power includes the third power of the first random access message in PRACH and the fourth power of the first random access message in PUSCH. The power difference between the third power and the fourth power is within the specified power difference range. The third power is greater than or equal to the first power, and the fourth power is greater than the second power.

[0073] In one possible implementation, the power acquisition module includes:

[0074] The first indication acquisition submodule is used to acquire a first power adjustment indication, wherein the first power adjustment indication is an indication configured by system signaling;

[0075] The first adjustment submodule is used to adjust the first transmission power according to the first power adjustment instruction to obtain the second transmission power.

[0076] In one possible implementation, the power acquisition module includes:

[0077] The second indication acquisition submodule is used to acquire a first power adjustment indication when the retransmission condition is that no second random access message is received from the base station within a specified time after the first random access message is sent. The first power adjustment indication is an indication configured by system signaling.

[0078] The second adjustment submodule is used to adjust the first transmission power according to the first power adjustment instruction to obtain the second transmission power.

[0079] In one possible implementation, the power acquisition module includes:

[0080] The third indication acquisition submodule is used to acquire a second power adjustment indication when the retransmission condition is that a second random access message of a specified type is received from the base station within a specified time after the first random access message is sent. The second power adjustment indication is an indication carried in the second random access message of the specified type.

[0081] The third adjustment submodule is used to adjust the first transmission power according to the second power adjustment instruction to obtain the second transmission power.

[0082] In one possible implementation, the device further includes:

[0083] The beam switching module is used to switch the transmission beam of the first random access message when the retransmission condition is met, if the first power reaches the maximum power of the first random access message in the PRACH, or the second power reaches the maximum power of the first random access message in the PUSCH.

[0084] According to a fifth aspect of the present disclosure, a random access message transmission apparatus is provided, the apparatus being used in a terminal, the apparatus comprising:

[0085] processor;

[0086] Memory for storing the executable instructions of the processor;

[0087] The processor is configured as follows:

[0088] Obtain the specified power difference range configured for the base station;

[0089] A first random access message is sent to the base station according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within the specified power difference range.

[0090] According to a sixth aspect of the present disclosure, a random access message transmission apparatus is provided, the apparatus being used in a base station, the apparatus comprising:

[0091] processor;

[0092] Memory for storing the executable instructions of the processor;

[0093] The processor is configured as follows:

[0094] Configure a specified power difference range for the terminal;

[0095] The terminal receives a first random access message sent at a first transmit power, wherein the first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH), and the power difference between the first power and the second power is within the specified power difference range.

[0096] According to a seventh aspect of the present disclosure, a computer-readable storage medium is provided, the computer-readable storage medium including executable instructions, wherein a processor in a base station invokes the executable instructions to implement the random access message transmission method described in the first aspect or any optional implementation thereof.

[0097] According to an eighth aspect of the present disclosure, a computer-readable storage medium is provided, the computer-readable storage medium including executable instructions, wherein a processor in a terminal invokes the executable instructions to implement the random access message transmission method described in the second aspect or any optional implementation thereof.

[0098] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0099] When the terminal transmits MsgA in a two-step random access process, it can control the difference between the first power of MsgA in PRACH and the second power of MsgA in PUSCH according to the base station configuration. This ensures that the power difference between the first power and the second power is within a specified power difference range. This avoids a large deviation in the result when the base station compensates for the received power of PUSCH in MsgA based on the received PRACH in MsgA, thereby improving the base station's reception performance of PUSCH in MsgA.

[0100] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this disclosure. Attached Figure Description

[0101] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0102] Figure 1 This is a schematic diagram of the structure of a wireless communication system provided in an embodiment of this disclosure;

[0103] Figure 2 This is a flowchart of a random access message transmission method provided in an embodiment of this disclosure;

[0104] Figure 3 This is a flowchart of a random access message transmission method provided in an embodiment of this disclosure;

[0105] Figure 4 This is a flowchart of a random access message transmission method provided in an embodiment of this disclosure;

[0106] Figure 5 This is a block diagram of a random access message transmission device provided in an embodiment of this disclosure;

[0107] Figure 6 This is a block diagram of a random access message transmission device provided in an embodiment of this disclosure;

[0108] Figure 7 This is a schematic diagram of the structure of a terminal according to an exemplary embodiment;

[0109] Figure 8 This is a schematic diagram of the structure of a base station according to an exemplary embodiment. Detailed Implementation

[0110] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0111] It should be understood that "several" in this article refers to one or more, and "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0112] With the development of wireless communication technology, mobile data is growing rapidly. In order to meet the communication needs of the rapidly growing mobile data, the industry has carried out standardization research on the two-step random access of fifth-generation mobile communication technology (5G), also known as New Radio (NR) technology.

[0113] Please refer to Figure 1 It shows a schematic diagram of the structure of a wireless communication system provided in an embodiment of this disclosure, such as... Figure 1 As shown, the mobile communication system is a communication system based on cellular mobile communication technology. The mobile communication system may include: a number of terminals 110 and a number of base stations 120.

[0114] Terminal 110 can be a device that provides voice and / or data connectivity to a user. Terminal 110 can communicate with one or more core networks via a Radio Access Network (RAN). Terminal 110 can be an Internet of Things (IoT) terminal, such as a sensor device, a mobile phone (or "cellular" phone), and a computer with an IoT terminal, for example, it can be a fixed, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted device. Examples include a station (STA), subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment (UE). Alternatively, terminal 110 can also be a device of an unmanned aerial vehicle (UAV).

[0115] Base station 120 can be a network-side device in a wireless communication system. This wireless communication system can be a 5G system, also known as a New Radio (NR) system. Alternatively, it can be a next-generation system after 5G.

[0116] The base station 120 can be a base station (gNB) in a 5G system employing a centralized-distributed architecture. When the base station 120 adopts a centralized-distributed architecture, it typically includes a central unit (CU) and at least two distributed units (DUs). The central unit is equipped with a protocol stack consisting of a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Media Access Control (MAC) layer; the distributed units are equipped with a Physical (PHY) layer protocol stack. This disclosure does not limit the specific implementation of the base station 120.

[0117] Base station 120 and terminal 110 can establish a wireless connection via a wireless air interface. In different implementations, the wireless air interface can be a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as a new air interface; or, the wireless air interface can also be a wireless air interface based on a next-generation mobile communication network technology standard based on 5G.

[0118] Optionally, the wireless communication system described above may also include a network management device 130.

[0119] Several base stations 120 are connected to network management device 130. Network management device 130 can be a core network device in a wireless communication system, such as a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, it can be other core network devices, such as a Serving Gateway (SGW), a Public Data Network Gateway (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS). The implementation of network management device 130 is not limited in this embodiment.

[0120] In an NR system, when a terminal selects two-step random access, it can send a first random access message (MsgA) to the base station. After successfully receiving the MsgA, the base station can return a second random access message (also called MsgB) to the terminal. The MsgA sent by the terminal to the base station consists of content transmitted in the PRACH and content transmitted in the PUSCH, and both are transmitted using Time Division Multiplexing (TDM) technology. Therefore, in one possible implementation, when the base station receives the MsgA sent by the terminal, it can perform AGC estimation on the received power of the PUSCH in the MsgA based on the received PRACH information (e.g., the detected PRACH power).

[0121] However, since there may be a certain power difference between the transmission power of MsgA in PRACH and the transmission power of MsgA in PUSCH, when the power difference is large, the AGC estimation result of the base station for the received power of PUSCH in MsgA will be inaccurate, thus affecting the reception performance of PUSCH in MsgA, and may even lead to demodulation failure.

[0122] To avoid the aforementioned problems, this disclosure provides a random access message transmission method, please refer to... Figure 2 The diagram illustrates a flowchart of a random access message transmission method provided in an embodiment of this disclosure. This random access message transmission method can be applied to... Figure 1 In the wireless communication system shown, by Figure 1 The method can be executed on a terminal in the system and may include the following steps.

[0123] In step 201, the specified power difference range configured by the base station is obtained.

[0124] In step 202, a first random access message is sent to the base station according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within a specified power difference range.

[0125] The first random access message mentioned above can be MsgA in a two-step random access process.

[0126] Optionally, obtain a specified power difference range configured for the base station, including:

[0127] Receive system messages sent by the base station through the physical broadcast channel;

[0128] Obtain the specified power difference range indicated by the system message.

[0129] Optionally, the first random access message carries power relationship indication information, which is used to indicate the magnitude relationship between the first power and the second power.

[0130] Optionally, the power relationship indication information is located in the uplink control information (UCI) carried in the first random access message.

[0131] Optionally, the power relationship indication information is located in the uplink control information (UCI) carried by the PUSCH in the first random access message.

[0132] Optionally, when the retransmission condition is met, the second transmission power is obtained;

[0133] The first random access message is retransmitted using the second transmit power;

[0134] The second transmit power includes the third power of the first random access message in the PRACH and the fourth power of the first random access message in the PUSCH. The power difference between the third power and the fourth power is within the specified power difference range. The third power is greater than or equal to the first power, and the fourth power is greater than the second power.

[0135] Optionally, acquiring the second transmit power includes:

[0136] Obtain a first power adjustment indication, which is an indication configured by system signaling;

[0137] The first transmission power is adjusted according to the first power adjustment instruction to obtain the second transmission power.

[0138] Optionally, acquiring the second transmit power includes:

[0139] When the retransmission condition is that no second random access message is received from the base station within a specified time after the first random access message is sent, a first power adjustment indication is obtained, which is an indication configured by the system signaling.

[0140] The first transmission power is adjusted according to the first power adjustment instruction to obtain the second transmission power.

[0141] Optionally, acquiring the second transmit power includes:

[0142] When the retransmission condition is that a second random access message of a specified type is received from the base station within a specified time after the first random access message is sent, a second power adjustment indication is obtained, which is an indication carried in the second random access message of the specified type.

[0143] The first transmit power is adjusted according to the second power adjustment instruction to obtain the second transmit power.

[0144] Optionally, the method further includes:

[0145] When the retransmission condition is met, if the first power reaches the maximum power of the first random access message in the PRACH, or if the second power reaches the maximum power of the first random access message in the PUSCH, then the transmission beam of the first random access message is switched.

[0146] In summary, the scheme shown in this embodiment allows the terminal to control the difference between the first power of MsgA in PRACH and the second power of MsgA in PUSCH according to the base station configuration when transmitting MsgA in two-step random access. This ensures that the power difference between the first power and the second power is within a specified power difference range, thereby avoiding a large deviation in the result when the base station compensates for the received power of PUSCH in MsgA based on the received PRACH in MsgA. This improves the base station's reception performance of PUSCH in MsgA.

[0147] Please refer to Figure 3 The diagram illustrates a flowchart of a random access message transmission method provided in an embodiment of this disclosure. This random access message transmission method can be applied to... Figure 1 In the wireless communication system shown, by Figure 1 The method, executed by the base station in the system, may include the following steps.

[0148] In step 301, a specified power difference range is configured for the terminal.

[0149] In step 302, the receiving terminal sends a first random access message according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within a specified power difference range.

[0150] Optionally, a specified power difference range can be configured for the terminal, including:

[0151] A system message indicating the specified power difference range is sent via the physical broadcast channel.

[0152] Optionally, the method further includes:

[0153] During the reception of the first random access message, the received power of the PUSCH channel of the first random access message is compensated according to the specified power difference range.

[0154] Optionally, during the process of receiving the first random access message, compensation is performed on the received power of the PUSCH channel of the first random access message according to the specified power difference range, including:

[0155] Obtain the power relationship indication information carried in the first random access message, which is used to indicate the magnitude relationship between the first power and the second power;

[0156] During the reception of the first random access message, the received power of the PUSCH channel of the first random access message is compensated according to the specified power difference range and the power relationship indication information.

[0157] Optionally, obtaining the power relationship indication information carried in the first random access message includes:

[0158] The power relationship indication information is obtained from the uplink control information (UCI) in the PUSCH of the first random access message.

[0159] Optionally, the power relationship indication information is obtained from the uplink control information (UCI) in the first random access message, including:

[0160] The power relationship indication information is obtained from the uplink control information (UCI) in the PUSCH of the first random access message.

[0161] Optionally, the method further includes:

[0162] When the content of the first random access message in the PRACH is successfully parsed, but the parsing of the content of the first random access message in the PUSCH fails, a second random access message of the specified type is returned to the terminal.

[0163] The second random access message of the specified type includes a second power adjustment indication, which is used to instruct the terminal to adjust the first transmit power to obtain a second transmit power for retransmitting the first random access message.

[0164] In summary, the scheme shown in this embodiment allows for the control of the difference between the first power of MsgA in PRACH and the second power of MsgA in PUSCH during the transmission of MsgA in two-step random access between the base station and the terminal. This ensures that the power difference between the first power and the second power is within a specified power difference range. This avoids a large deviation in the result when the base station compensates for the received power of PUSCH in MsgA based on the received PRACH in MsgA, thereby improving the base station's reception performance of PUSCH in MsgA.

[0165] Please refer to Figure 4 It illustrates a random access message transmission method provided in an embodiment of this disclosure, which can be applied to the above-described method. Figure 1 In the wireless communication system shown, by Figure 1 The method, executed by the terminal and base station in the process, may include the following steps.

[0166] In step 401, the base station configures a specified power difference range for the terminal, and the terminal obtains the specified power difference range configured by the base station.

[0167] In this embodiment of the disclosure, before the terminal initiates random access to the base station, the base station can configure the terminal.

[0168] A range of specified power difference gaps between the transmit powers of PRACH and PUSH in a two-step random access, or setting the maximum value of the aforementioned gap.

[0169] The transmission power of PRACH and PUSH can be the energy per RE (EPRE).

[0170] Optionally, when the base station configures a specified power difference range for the terminal, it can send a system message indicating the specified power difference range through a physical broadcast channel. Correspondingly, when the terminal obtains the specified power difference range configured by the base station, it can receive the system message sent by the base station through the physical broadcast channel and obtain the specified power difference range indicated by the system message.

[0171] For example, in one exemplary scheme, the base station can transmit a Master Information Block (MIB) carrying interval indication information through a physical broadcast channel. Before initiating access to the base station, the terminal first detects the MIB transmitted by the base station on the physical broadcast channel, obtains the interval indication information carried in the MIB, and obtains the specified power difference interval based on the interval indication information.

[0172] In one possible implementation, the aforementioned interval indication information may directly carry the specified power difference interval, i.e., the aforementioned Gap interval or the maximum value of the Gap.

[0173] In another possible implementation, the aforementioned interval indication information may carry identification information of the specified power difference interval. After the terminal obtains the identification information carried in the aforementioned interval indication information, it queries the corresponding specified power difference interval in the locally stored power difference interval set according to the identification information.

[0174] For example, a power difference interval set can be pre-configured and stored in the terminal. This set contains multiple gap intervals pre-configured by the system, or the maximum value of multiple gaps. After the terminal obtains the identification information carried in the interval indication information, it queries the power difference interval set according to the identification information to obtain the corresponding gap interval or the maximum value of the gap.

[0175] The aforementioned set of power difference intervals can be pre-configured in the terminal by the system via RRC signaling, or the aforementioned set of power difference intervals can be defined by a protocol.

[0176] In one possible implementation, the value of the aforementioned gap can also be configured by the system via RRC signaling.

[0177] In step 402, the terminal sends a first random access message to the base station according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within a specified power difference range.

[0178] The first random access message can be MsgA, which contains two parts: PRACH and PUSCH. The PRACH in MsgA mainly carries the preamble sequence for random access, while the PUSCH part in MsgA can carry the UE identifier (i.e., UE ID). For example, the UE ID can be one of C-RNTI, temporary C-RNTI, or RA-RNTI.

[0179] Optionally, the PUSCH portion of the MsgA mentioned above may also carry uplink control information (UCI).

[0180] Optionally, the PUSCH section in MsgA can also carry timing information, such as Timing Advance (TA).

[0181] In one exemplary scheme, the UE estimates the path loss based on the measured power of the Synchronizing Signal Block (SSB) transmitted downlink to the base station, calculates the transmit power based on the received power of PRACH and PUSCH, and transmits MsgA. When transmitting MsgA, the UE ensures that the difference between the transmit power on PRACH and PUSCH is within the aforementioned gap.

[0182] In one possible implementation, the first random access message carries power relationship indication information, which is used to indicate the magnitude relationship between the first power and the second power.

[0183] In this embodiment of the disclosure, in order to further improve the accuracy of AGC estimation on the base station side, when the terminal sends the above-mentioned MsgA, it can carry indication information of the magnitude relationship between the first power and the second power in MsgA.

[0184] Optionally, when the first random access message carries a UCI, the UCI may carry the power relationship indication information. For example, the UCI in the first random access message may be carried by the PUSCH in the first random access message.

[0185] In other words, in this embodiment of the present disclosure, when the terminal communicates with the base station, in addition to the UCI carried in the Physical Uplink Control Channel (PUCCH), the terminal also introduces the UCI in the first random access message. For example, the UCI can be introduced in the PUSCH of the first random access message, and the UCI can carry the aforementioned power relationship indication information.

[0186] For example, the UE can carry 1 bit of indication information in the UCI of the PUSCH in the MsgA to indicate the aforementioned gap situation. For example, this indication information can indicate whether the power of the PUSCH is greater or less than the power of the PRACH.

[0187] In step 403, the base station receives the first random access message sent by the terminal to the base station according to the first transmission power.

[0188] In this embodiment of the disclosure, since the content of PRACH in MsgA precedes the content of PUSCH in the time domain, the base station can detect PRACH in MsgA first and then detect PUSCH in MsgA.

[0189] In step 404, during the process of receiving the first random access message, the base station compensates for the received power of the PUSCH channel of the first random access message according to the specified power difference range.

[0190] In one exemplary scheme, the base station can compensate for the received power of the PUSCH channel of the first random access message by means of AGC, based on the specified power difference range.

[0191] The process of the base station compensating for the received power of the PUSCH channel of the first random access message can be performed by the base station during the reception of the first random access message. That is, after the base station detects the PRACH (i.e., the preamble sequence) in the first random access message sent by the terminal, it can compensate for the received power of the PUSCH based on the detection of the PRACH (such as the received power of the PRACH) and the specified power difference range mentioned above when receiving the content of the first random access message in the PUSCH.

[0192] For example, in this embodiment of the disclosure, after the base station detects the PRACH in MsgA, it can perform AGC estimation on the PUSCH in MsgA based on the power of the detected PRACH in MsgA and the specified power difference range mentioned above, so as to better receive the PUSCH in MsgA.

[0193] Optionally, during the process of receiving the first random access message, when compensating the received power of the PUSCH channel of the first random access message according to the specified power difference interval, the base station may obtain the power relationship indication information carried in the first random access message, which is used to indicate the magnitude relationship between the first power and the second power; and then, during the process of receiving the first random access message, compensate the received power of the PUSCH channel of the first random access message according to the specified power difference interval and the power relationship indication information.

[0194] For example, assuming the gap is [-A, A], the base station can combine this gap range with the relationship between the power of PUSCH and PRACH, and adjust the AGC estimation of PUSCH more accurately based on the received PRACH.

[0195] Optionally, when obtaining the power relationship indication information carried in the first random access message, the base station can obtain the power relationship indication information from the uplink control information (UCI) in the first random access message. For example, when the UCI is carried by the PUSCH, the base station can obtain the power relationship indication information from the UCI in the PUSCH of the first random access message.

[0196] The position of the aforementioned power relationship indication information in the PUSCH of the first random access message can be configured by the system or defined by the protocol.

[0197] Optionally, in this embodiment of the disclosure, when the base station successfully parses the content of the first random access message in the PRACH, but fails to parse the content of the first random access message in the PUSCH, it returns a second random access message of a specified type to the terminal.

[0198] The second random access message of the specified type includes a second power adjustment indication, which is used to instruct the terminal to adjust the first transmit power to obtain a second transmit power for retransmitting the first random access message.

[0199] In this embodiment, if the base station successfully receives MsgA, it sends MsgB; if the base station does not receive the PRACH and PUSCH of MsgA, the UE will retransmit. To indicate the transmit power used when retransmitting MsgA, the base station can instruct the UE in the MsgB how to adjust the transmit power of MsgA based on the parsing of MsgA. For example, if the base station receives the PRACH of MsgA but fails to successfully parse the PUSCH, the base station feeds back a MsgB of type Msg2 to the UE in the configured MsgB resource. This Msg2 type MsgB can carry the aforementioned second power adjustment indication.

[0200] In step 405, when the retransmission condition is met, the terminal acquires the second transmit power.

[0201] The second transmit power includes the third power of the first random access message in the PRACH and the fourth power of the first random access message in the PUSCH. The power difference between the third power and the fourth power is within the specified power difference range. The third power is greater than or equal to the first power, and the fourth power is greater than the second power.

[0202] In this embodiment of the disclosure, the retransmission condition may be that no second random access message is received from the base station within a specified time period after the first random access message is sent, or that a second random access message of a specified type (i.e., MsgB of the Msg2 type) is received from the base station within a specified time period after the first random access message is sent.

[0203] When the UE retransmits MsgA, it can maintain the synchronous increase of the transmission power of PRACH and PUSCH in MsgA, or it can increase the power of PRACH or PUSCH separately, and the difference between the two shall not exceed the above-mentioned gap range.

[0204] Optionally, when acquiring the second transmit power, the base station may acquire a first power adjustment indication, which is an indication configured by the system through RRC signaling; and adjust the first transmit power according to the first power adjustment indication to obtain the second transmit power.

[0205] In one possible implementation, regardless of the retransmission condition mentioned above, when retransmitting MsgA, the UE can adjust the first transmit power used in the previous transmission according to the first power adjustment indication pre-configured by the system. This adjustment can be to keep the transmit power of PRACH and PUSCH in MsgA synchronously increased, or to increase the power of PRACH or PUSCH separately.

[0206] The aforementioned first power adjustment indication may be configured by system signaling. For example, it may be configured by the system through RRC signaling when the terminal previously accessed the system, or the aforementioned first power adjustment indication may also be configured by the base station through broadcast signaling.

[0207] Optionally, when acquiring the second transmit power, if the retransmission condition is that no second random access message is received from the base station within a specified time after sending the first random access message, the terminal acquires a first power adjustment indication, which is an indication configured by system signaling; and adjusts the first transmit power according to the first power adjustment indication to obtain the second transmit power.

[0208] When the retransmission condition is that a second random access message of a specified type is received from the base station within a specified time after the first random access message is sent, the terminal obtains a second power adjustment indication, which is an indication carried in the second random access message of the specified type; and adjusts the first transmit power according to the second power adjustment indication to obtain the second transmit power.

[0209] In another possible implementation, the UE simultaneously supports a pre-configured first power adjustment indication and a second power adjustment indication configured by the base station via MsgB, and determines which power adjustment indication to select based on specific retransmission conditions. For example, when the UE does not receive any type of MsgB returned by the base station, it can adjust the first transmit power using the pre-configured first power adjustment indication. After receiving a MsgB of type Msg2 from the base station, the UE can adjust the first transmit power according to the second power adjustment indication carried in the Msg2 MsgB to obtain the second transmit power. That is, when retransmitting MsgA (i.e., PRACH+PUSCH), the UE can simultaneously increase the transmit power of PRACH and PUSCH in MsgA according to the indication, or increase the PUSCH power in MsgA only according to the indication, while ensuring that the difference between the transmit power of PRACH and PUSCH in MsgA is within the aforementioned gap range.

[0210] The information for the second power adjustment indication can be shown in Table 1 below.

[0211] Table 1

[0212] Retransmission of MsgA The power of PRACH and PUSCH increases simultaneously. Retransmission of PUSCH PUSCH power increase alone

[0213] As shown in Table 1, when the second power adjustment indication is Retransmission of MsgA, the UE can simultaneously increase the transmission power of PRACH and PUSCH in MsgA. That is, the first power and the second power are increased by the same amount to obtain the third power and the fourth power.

[0214] When the second power adjustment indication is Retransmission of PUSCH, the UE can keep the transmission power of PRACH in MsgA unchanged and increase the transmission power of PUSCH in MsgA separately until the difference between the transmission power of PUSCH and PRACH in MsgA exceeds the above-mentioned gap range.

[0215] Optionally, when the retransmission condition is met, if the first power reaches the maximum power of the first random access message in the PRACH, or if the second power reaches the maximum power of the first random access message in the PUSCH, then the transmission beam of the first random access message is switched.

[0216] In this embodiment of the disclosure, when the transmission power of the PUSCH or PRACH of the UE retransmitting MsgA reaches the maximum value, the UE needs to change the beam for transmission, and the above-mentioned gap interval remains unchanged after the beam is changed.

[0217] In step 406, the terminal retransmits the first random access message using the second transmit power.

[0218] In this embodiment of the disclosure, after the terminal obtains the second transmission power, it can retransmit the first random access message according to the second transmission power.

[0219] In summary, the scheme shown in this disclosure allows for the control of the difference between the first power of MsgA in PRACH and the second power of MsgA in PUSCH during the transmission of MsgA in two-step random access between the base station and the terminal. This control is achieved by configuring the base station to ensure that the power difference between the first and second powers is within a specified power difference range. This avoids significant deviations when the base station compensates for the received power of PUSCH in MsgA based on the received PRACH in MsgA, thereby improving the base station's reception performance of PUSCH in MsgA.

[0220] Furthermore, in the scheme shown in the embodiments of this disclosure, the terminal can indicate the magnitude relationship between the transmission power of PRACH and PUSCH in MsgA, so that the base station can more accurately perform AGC estimation on PUSCH in MsgA based on the reception status of PRACH in MsgA, thereby further improving the base station's reception performance of PUSCH in MsgA.

[0221] The following are embodiments of the apparatus disclosed herein, which can be used to execute embodiments of the method disclosed herein. For details not disclosed in the apparatus embodiments of this disclosure, please refer to the embodiments of the method disclosed herein.

[0222] Figure 5 This is a block diagram illustrating a random access message transmission apparatus according to an exemplary embodiment, such as... Figure 5 As shown, this random access message transmission device can be implemented through hardware or a combination of hardware and software. Figure 1 All or part of the terminal in the wireless communication system shown is used to perform Figure 2 or Figure 4 The steps performed by the terminal in any of the illustrated embodiments. The random access message transmission apparatus may include:

[0223] The difference range acquisition module 501 is used to acquire the specified power difference range configured by the base station;

[0224] The first transmitting module 502 is configured to transmit a first random access message to the base station according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within a specified power difference range.

[0225] Optionally, the difference interval acquisition module 501 includes:

[0226] The system message receiving submodule is used to receive system messages sent by the base station through the physical broadcast channel;

[0227] The difference range acquisition submodule is used to acquire the specified power difference range indicated by the system message.

[0228] Optionally, the first random access message carries power relationship indication information, which is used to indicate the magnitude relationship between the first power and the second power.

[0229] Optionally, the power relationship indication information is located in the uplink control information (UCI) carried in the first random access message.

[0230] Optionally, the power relationship indication information is located in the uplink control information (UCI) carried by the PUSCH in the first random access message.

[0231] Optionally, the device further includes:

[0232] The power acquisition module 503 is used to acquire the second transmission power when the retransmission condition is met;

[0233] The second transmitting module 504 is used to retransmit the first random access message using the second transmitting power;

[0234] The second transmit power includes the third power of the first random access message in PRACH and the fourth power of the first random access message in PUSCH. The power difference between the third power and the fourth power is within the specified power difference range. The third power is greater than or equal to the first power, and the fourth power is greater than the second power.

[0235] Optionally, the power acquisition module 503 includes:

[0236] The first indication acquisition submodule is used to acquire a first power adjustment indication, wherein the first power adjustment indication is an indication configured by system signaling;

[0237] The first adjustment submodule is used to adjust the first transmission power according to the first power adjustment instruction to obtain the second transmission power.

[0238] Optionally, the power acquisition module 503 includes:

[0239] The second indication acquisition submodule is used to acquire a first power adjustment indication when the retransmission condition is that no second random access message is received from the base station within a specified time after the first random access message is sent. The first power adjustment indication is an indication configured by system signaling.

[0240] The second adjustment submodule is used to adjust the first transmission power according to the first power adjustment instruction to obtain the second transmission power.

[0241] Optionally, the power acquisition module 503 includes:

[0242] The third indication acquisition submodule is used to acquire a second power adjustment indication when the retransmission condition is that a second random access message of a specified type is received from the base station within a specified time after the first random access message is sent. The second power adjustment indication is an indication carried in the second random access message of the specified type.

[0243] The third adjustment submodule is used to adjust the first transmission power according to the second power adjustment instruction to obtain the second transmission power.

[0244] Optionally, the device further includes:

[0245] The beam switching module 505 is used to switch the transmission beam of the first random access message when the retransmission condition is met, if the first power reaches the maximum power of the first random access message in the PRACH, or the second power reaches the maximum power of the first random access message in the PUSCH.

[0246] Figure 6 This is a block diagram illustrating a random access message transmission apparatus according to an exemplary embodiment, such as... Figure 6 As shown, this random access message transmission device can be implemented through hardware or a combination of hardware and software. Figure 1 All or part of the base station in the wireless communication system shown is used to perform Figure 3 or Figure 4 The steps performed by the base station in any of the illustrated embodiments. The random access message transmission apparatus may include:

[0247] The difference range configuration module 601 is used to configure a specified power difference range for the terminal.

[0248] The message receiving module 602 is used to receive a first random access message sent by the terminal according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel PRACH and a second power of the first random access message in the physical uplink shared channel PUSCH. The power difference between the first power and the second power is within a specified power difference range.

[0249] Optionally, the difference range configuration module is used to send a system message indicating the specified power difference range via a physical broadcast channel.

[0250] Optionally, the device further includes:

[0251] The compensation module 603 is used to compensate the received power of the PUSCH channel of the first random access message according to the specified power difference range during the process of receiving the first random access message.

[0252] Optionally, the compensation module 603 includes:

[0253] The indication information acquisition submodule is used to acquire the power relationship indication information carried in the first random access message, wherein the power relationship indication information is used to indicate the magnitude relationship between the first power and the second power;

[0254] The compensation submodule is used to compensate the received power of the PUSCH channel of the first random access message according to the specified power difference range and the power relationship indication information during the process of receiving the first random access message.

[0255] Optionally, the indication information acquisition submodule is used to acquire the power relationship indication information from the uplink control information (UCI) in the first random access message.

[0256] Optionally, the indication information acquisition submodule is used to acquire the power relationship indication information from the uplink control information (UCI) in the PUSCH of the first random access message.

[0257] Optionally, the device further includes:

[0258] The message sending module 604 is used to return a second random access message of a specified type to the terminal when the content of the first random access message in PRACH is successfully parsed, but the parsing of the content of the first random access message in PUSCH fails.

[0259] The second random access message of the specified type includes a second power adjustment indication, which is used to instruct the terminal to adjust the first transmit power to obtain a second transmit power for retransmitting the first random access message.

[0260] It should be noted that the device provided in the above embodiments is only illustrated by the division of the above functional modules when implementing its functions. In actual applications, the above functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0261] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0262] An exemplary embodiment of this disclosure provides a random access message transmission apparatus capable of implementing the above-described embodiments of this disclosure. Figure 2 or Figure 4 In the illustrated embodiment, all or part of the steps are executed by the terminal. The random access message transmission device includes: a processor and a memory for storing processor-executable instructions.

[0263] The processor is configured as follows:

[0264] Obtain the specified power difference range configured for the base station;

[0265] A first random access message is sent to the base station according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within a specified power difference range.

[0266] Optionally, obtaining the specified power difference range configured by the base station includes:

[0267] Receive system messages sent by the base station through the physical broadcast channel;

[0268] Obtain the specified power difference range indicated by the system message.

[0269] Optionally, the first random access message carries power relationship indication information, which is used to indicate the magnitude relationship between the first power and the second power.

[0270] Optionally, the power relationship indication information is located in the uplink control information (UCI) carried in the first random access message.

[0271] Optionally, the power relationship indication information is located in the uplink control information (UCI) carried by the PUSCH in the first random access message.

[0272] Optionally, when the retransmission condition is met, the second transmission power is obtained;

[0273] The first random access message is retransmitted using the second transmit power;

[0274] The second transmit power includes the third power of the first random access message in PRACH and the fourth power of the first random access message in PUSCH. The power difference between the third power and the fourth power is within the specified power difference range. The third power is greater than or equal to the first power, and the fourth power is greater than the second power.

[0275] Optionally, obtaining the second transmit power includes:

[0276] Obtain a first power adjustment indication, wherein the first power adjustment indication is an indication configured by system signaling;

[0277] The first transmission power is adjusted according to the first power adjustment instruction to obtain the second transmission power.

[0278] Optionally, obtaining the second transmit power includes:

[0279] When the retransmission condition is that no second random access message is received from the base station within a specified time after the first random access message is sent, a first power adjustment indication is obtained, wherein the first power adjustment indication is an indication configured by system signaling.

[0280] The first transmission power is adjusted according to the first power adjustment instruction to obtain the second transmission power.

[0281] Optionally, obtaining the second transmit power includes:

[0282] When the retransmission condition is that a second random access message of a specified type is received from the base station within a specified time after the first random access message is sent, a second power adjustment indication is obtained, wherein the second power adjustment indication is an indication carried in the second random access message of the specified type.

[0283] The first transmission power is adjusted according to the second power adjustment instruction to obtain the second transmission power.

[0284] Optionally, the processor is further configured to:

[0285] When the retransmission condition is met, if the first power reaches the maximum power of the first random access message in the PRACH, or if the second power reaches the maximum power of the first random access message in the PUSCH, then the transmission beam of the first random access message is switched.

[0286] An exemplary embodiment of this disclosure provides a random access message transmission apparatus capable of implementing the above-described embodiments of this disclosure. Figure 3 or Figure 4 In the illustrated embodiment, all or part of the steps are performed by the base station. The random access message transmission device includes: a processor and a memory for storing processor-executable instructions.

[0287] The processor is configured as follows:

[0288] Configure a specified power difference range for the terminal;

[0289] The receiving terminal transmits a first random access message at a first transmit power, wherein the first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH), and the power difference between the first power and the second power is within a specified power difference range.

[0290] Optionally, configuring a specified power difference range for the terminal includes:

[0291] A system message indicating the specified power difference range is transmitted via the physical broadcast channel.

[0292] Optionally, the processor is configured to:

[0293] During the process of receiving the first random access message, the received power of the PUSCH channel of the first random access message is compensated according to the specified power difference range.

[0294] Optionally, the step of compensating the received power of the PUSCH channel of the first random access message according to the specified power difference range during the process of receiving the first random access message includes:

[0295] Obtain the power relationship indication information carried in the first random access message, wherein the power relationship indication information is used to indicate the magnitude relationship between the first power and the second power;

[0296] During the process of receiving the first random access message, the received power of the PUSCH channel of the first random access message is compensated according to the specified power difference range and the power relationship indication information.

[0297] Optionally, obtaining the power relationship indication information carried in the first random access message includes:

[0298] The power relationship indication information is obtained from the uplink control information (UCI) in the first random access message.

[0299] Optionally, obtaining the power relationship indication information from the uplink control information (UCI) in the first random access message includes:

[0300] The power relationship indication information is obtained from the uplink control information (UCI) in the PUSCH of the first random access message.

[0301] Optionally, the processor is configured to:

[0302] When the content of the first random access message in PRACH is successfully parsed, but the parsing of the content of the first random access message in PUSCH fails, a second random access message of the specified type is returned to the terminal.

[0303] The second random access message of the specified type includes a second power adjustment indication, which is used to instruct the terminal to adjust the first transmit power to obtain a second transmit power for retransmitting the first random access message.

[0304] The above primarily uses terminals and base stations as examples to describe the solutions provided in the embodiments of this disclosure. It is understood that, in order to achieve the above functions, terminals and base stations include corresponding hardware structures and / or software modules for executing each function. By combining the modules and algorithm steps of the various examples described in the embodiments disclosed in this disclosure, the embodiments of this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of this disclosure.

[0305] Figure 7 This is a schematic diagram of the structure of a terminal according to an exemplary embodiment.

[0306] Terminal 700 includes a communication unit 704 and a processor 702. The processor 702 can also be a controller. Figure 7 This is referred to as "Controller / Processor 702". The communication unit 704 is used to support communication between the terminal and other network devices (such as base stations).

[0307] Furthermore, the terminal 700 may also include a memory 703 for storing the program code and data of the terminal 700.

[0308] Understandable, Figure 7 Only a simplified design of terminal 700 is shown. In practical applications, terminal 700 can include any number of processors, controllers, memory, communication units, etc., and all terminals that can implement the embodiments of this disclosure are within the protection scope of the embodiments of this disclosure.

[0309] Figure 8 This is a schematic diagram of the structure of a base station according to an exemplary embodiment.

[0310] The base station 800 includes a communication unit 804 and a processor 802. The processor 802 can also be a controller. Figure 8 This is referred to as "Controller / Processor 802". The communication unit 804 is used to support communication between the base station and other network devices (such as terminals, other base stations, gateways, etc.).

[0311] Furthermore, the base station 800 may also include a memory 803, which is used to store the program code and data of the base station 800.

[0312] Understandable, Figure 8Only a simplified design of base station 800 is shown. In practical applications, base station 800 can include any number of processors, controllers, memory, communication units, etc., and all base stations that can implement the embodiments of this disclosure are within the protection scope of the embodiments of this disclosure.

[0313] Those skilled in the art will recognize that the functions described in the embodiments of this disclosure in one or more of the foregoing examples can be implemented using hardware, software, firmware, or any combination thereof. When implemented in software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0314] This disclosure also provides a computer storage medium for storing computer software instructions for use by the aforementioned terminal, which includes a program designed to execute the aforementioned random access message transmission method.

[0315] This disclosure also provides a computer storage medium for storing computer software instructions used by the base station, which includes a program designed to execute the random access message transmission method described above.

[0316] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0317] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A random access message transmission method, characterized by, The method is executed by a base station, and the method includes: Configure a specified power difference range for the terminal; The terminal receives a first random access message sent at a first transmit power, wherein the first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH), and the power difference between the first power and the second power is within the specified power difference range.

2. The method of claim 1, wherein, The step of configuring a specified power difference range for the terminal includes: A system message indicating the specified power difference range is transmitted via the physical broadcast channel.

3. The method of claim 1, wherein, The method further includes: During the process of receiving the first random access message, the received power of the first random access message in the PUSCH channel is compensated according to the specified power difference range.

4. The method of claim 3, wherein, The step of compensating the received power of the PUSCH channel of the first random access message according to the specified power difference range during the process of receiving the first random access message includes: Obtain the power relationship indication information carried in the first random access message, wherein the power relationship indication information is used to indicate the magnitude relationship between the first power and the second power; During the process of receiving the first random access message, the received power of the PUSCH channel of the first random access message is compensated according to the specified power difference range and the power relationship indication information.

5. The method of claim 4, wherein, The step of obtaining the power relationship indication information carried in the first random access message includes: The power relationship indication information is obtained from the uplink control information (UCI) in the PUSCH of the first random access message.

6. A random access message transmission method, characterized by, The method is executed by a terminal, and the method includes: Obtain the specified power difference range configured for the base station; A first random access message is sent to the base station according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within the specified power difference range.

7. The method of claim 6, wherein, The step of obtaining the specified power difference range configured by the base station includes: Receive system messages sent by the base station through the physical broadcast channel; Obtain the specified power difference range indicated by the system message.

8. The method according to claim 6, characterized in that, The first random access message carries power relationship indication information, which is used to indicate the magnitude relationship between the first power and the second power.

9. The method according to claim 8, characterized in that, The power relationship indication information is located in the uplink control information (UCI) carried by the PUSCH in the first random access message.

10. The method of claim 6, wherein, The method further includes: When the retransmission conditions are met, the second transmission power is obtained; The first random access message is retransmitted using the second transmit power; The second transmit power includes the third power of the first random access message in PRACH and the fourth power of the first random access message in PUSCH. The power difference between the third power and the fourth power is within the specified power difference range. The third power is greater than or equal to the first power, and the fourth power is greater than the second power.

11. The method of claim 10, wherein, The acquisition of the second transmission power includes: Obtain a first power adjustment indication, wherein the first power adjustment indication is an indication configured by system signaling; The first transmission power is adjusted according to the first power adjustment instruction to obtain the second transmission power.

12. The method of claim 10, wherein, The acquisition of the second transmission power includes: When the retransmission condition is that no second random access message is received from the base station within a specified time after the first random access message is sent, a first power adjustment indication is obtained, wherein the first power adjustment indication is an indication configured by system signaling. The first transmission power is adjusted according to the first power adjustment instruction to obtain the second transmission power.

13. The method of claim 10, wherein, The acquisition of the second transmission power includes: When the retransmission condition is that a second random access message of a specified type is received from the base station within a specified time after the first random access message is sent, a second power adjustment indication is obtained, wherein the second power adjustment indication is an indication carried in the second random access message of the specified type. The first transmission power is adjusted according to the second power adjustment instruction to obtain the second transmission power.

14. An apparatus for random access message transmission, the apparatus comprising: a processor configured to: transmit a random access message; and receive a response to the random access message. The device is used in a base station, and the device includes: The power difference range configuration module is used to configure a specified power difference range for the terminal; The message receiving module is configured to receive a first random access message sent by the terminal according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within the specified power difference range.

15. An apparatus for random access message transmission, the apparatus comprising: a processor configured to: transmit a random access message; and receive a response to the random access message. The device is used in a terminal, and the device includes: The difference range acquisition module is used to acquire the specified power difference range configured by the base station; A first transmitting module is configured to transmit a first random access message to the base station according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within the specified power difference range.

16. An apparatus for random access message transmission, the apparatus comprising: The device is used in a base station, and the device includes: processor; Memory for storing the executable instructions of the processor; The processor is configured as follows: Configure a specified power difference range for the terminal; The terminal receives a first random access message sent at a first transmit power, wherein the first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH), and the power difference between the first power and the second power is within the specified power difference range.

17. An apparatus for random access message transmission, the apparatus comprising: means for transmitting a random access message; and means for transmitting a second random access message. The device is used in a terminal, and the device includes: processor; Memory for storing the executable instructions of the processor; The processor is configured as follows: Obtain the specified power difference range configured for the base station; A first random access message is sent to the base station according to a first transmit power. The first transmit power includes a first power of the first random access message in the physical random access channel (PRACH) and a second power of the first random access message in the physical uplink shared channel (PUSCH). The power difference between the first power and the second power is within the specified power difference range.

18. A computer-readable storage medium, characterized in that, The computer-readable storage medium contains executable instructions, and the processor in the base station invokes the executable instructions to implement the random access message transmission method according to any one of claims 1 to 5.

19. A computer-readable storage medium, characterized in that, The computer-readable storage medium contains executable instructions, and the processor in the terminal invokes the executable instructions to implement the random access message transmission method according to any one of claims 6 to 13.

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