WO2021022408A1 - 随机接入消息发送方法、装置及存储介质 - Google Patents

随机接入消息发送方法、装置及存储介质 Download PDF

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Publication number
WO2021022408A1
WO2021022408A1 PCT/CN2019/099053 CN2019099053W WO2021022408A1 WO 2021022408 A1 WO2021022408 A1 WO 2021022408A1 CN 2019099053 W CN2019099053 W CN 2019099053W WO 2021022408 A1 WO2021022408 A1 WO 2021022408A1
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WIPO (PCT)
Prior art keywords
random access
access message
sending
specified content
retransmissions
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PCT/CN2019/099053
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English (en)
French (fr)
Inventor
刘洋
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北京小米移动软件有限公司
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Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to US17/630,302 priority Critical patent/US20220272768A1/en
Priority to CN201980001588.3A priority patent/CN110574479B/zh
Priority to PCT/CN2019/099053 priority patent/WO2021022408A1/zh
Priority to EP19940299.1A priority patent/EP4009715A4/en
Publication of WO2021022408A1 publication Critical patent/WO2021022408A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/188—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/362—Aspects of the step size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access

Definitions

  • the present disclosure relates to the field of wireless communication technology, and in particular to a method, device and storage medium for sending random access messages.
  • NR New Radio
  • the terminal can initiate access to the base station through a two-step random access method.
  • the first step in the two-step random access initiated by the terminal in the NR system is to send the first random access message (MsgA) to the base station.
  • the terminal may continue to retransmit the first random access message.
  • the present disclosure provides a random access message sending method, device and storage medium.
  • the technical solution is as follows:
  • a random access message sending method the method is executed by a terminal, and the method includes:
  • the two-step random access process sending a first random access message according to a first retransmission configuration, where the first random access message includes a physical random access channel PRACH and a physical uplink shared channel PUSCH;
  • the specified content is sent according to the second retransmission configuration, where the specified content is the content of the first random access message in the PUSCH;
  • the first retransmission configuration is different from the second retransmission configuration.
  • the first retransmission configuration includes a first number of retransmissions corresponding to the first random access message, and the first random access message is sent according to the first retransmission configuration, include:
  • the first random access message is repeatedly sent to the base station.
  • the repeatedly sending the first random access message to the base station includes:
  • the adjusting the first transmission power of the last transmission of the first random access message according to the first power adjustment step to obtain the adjusted first transmission power includes :
  • the first power adjustment step size is added to the first transmission power of the last transmission of the first random access message to obtain the adjusted second transmission power.
  • the first power adjustment step size is the difference between the maximum transmit power of the terminal for sending the random access message and the transmit power of the first random access message for the first time, divided by The first number of retransmissions.
  • sending the specified content according to the second retransmission configuration includes:
  • the second random access message is sent according to the second retransmission configuration.
  • the second random access message of the specified type is returned when the base station successfully receives the PRACH of the first random access message and fails to parse the content of the first random access message in the PUSCH News.
  • the second retransmission configuration includes a second number of retransmissions corresponding to the specified content, and the second number of retransmissions is different from the first number of retransmissions;
  • the sending the specified content according to the second retransmission configuration includes:
  • the repeatedly sending the specified content to the base station includes:
  • the adjusting the second transmission power of the last transmission of the specified content according to the second power adjustment step to obtain the adjusted second transmission power includes:
  • the second power adjustment step size is added to the second transmission power of the last transmission of the specified content to obtain the adjusted second transmission power.
  • the second power adjustment step size is the difference between the maximum transmission power of the terminal for sending the random access message and the transmission power for the first transmission of the specified content, divided by the second Number of retransmissions.
  • the first number of retransmissions is less than the second number of retransmissions.
  • a random access message sending device the device is used in a terminal, and the device includes:
  • the first sending module is configured to send a first random access message according to a first retransmission configuration in a two-step random access process, where the first random access message includes a physical random access channel PRACH and a physical uplink shared channel PUSCH;
  • a second sending module configured to send the specified content according to a second retransmission configuration when the condition for sending the specified content is met, the specified content being the content of the first random access message in the PUSCH;
  • the first retransmission configuration is different from the second retransmission configuration.
  • the first retransmission configuration includes the first number of retransmissions corresponding to the first random access message
  • the first sending module is configured to: when the second random access message returned by the base station is not received within a first specified time period after the first random access message was sent last time, and the repetition of the first random message When the number of transmissions does not reach the first number of retransmissions, repeatedly sending the first random access message to the base station.
  • the first sending module includes:
  • the first step length obtaining submodule is configured to obtain the first power adjustment step size of the first random access message
  • the first power adjustment submodule is configured to adjust the first transmission power of the last transmission of the first random access message according to the first power adjustment step size to obtain the adjusted first transmission power;
  • the first sending submodule is configured to repeatedly send the first random access message to the base station according to the adjusted first transmission power.
  • the first power adjustment submodule is configured to add the first power adjustment to the first transmission power of the last transmission of the first random access message Step size to obtain the adjusted second transmit power.
  • the first power adjustment step size is the difference between the maximum transmit power of the terminal for sending the random access message and the transmit power of the first random access message for the first time, divided by The first number of retransmissions.
  • the second sending module is configured to receive the first specified type returned by the base station within the first specified time period after the first random access message was sent last time 2.
  • the specified content is sent according to the second retransmission configuration
  • the second random access message of the specified type is returned when the base station successfully receives the PRACH of the first random access message and fails to parse the content of the first random access message in the PUSCH News.
  • the second retransmission configuration includes a second number of retransmissions corresponding to the specified content, and the second number of retransmissions is different from the first number of retransmissions;
  • the second sending module is configured to: when the second random access message returned by the base station is not received within a second specified time period after the specified content was sent last time, and the number of retransmissions of the specified content has not reached During the second number of retransmissions, repeatedly sending the specified content to the base station.
  • the second sending module includes:
  • the second step size obtaining submodule is used to obtain the second power adjustment step size of the specified content
  • the second power adjustment submodule is configured to adjust the second transmission power of the last transmission of the specified content according to the second power adjustment step size, to obtain the adjusted second transmission power;
  • the second transmission submodule is configured to retransmit the specified content to the base station according to the adjusted second transmission power.
  • the second power adjustment submodule is configured to add the second power adjustment step size to the second transmission power of the last transmission of the specified content to obtain The adjusted second transmission power.
  • the second power adjustment step size is the difference between the maximum transmission power of the terminal for sending the random access message and the transmission power for the first transmission of the specified content, divided by the second Number of retransmissions.
  • the first number of retransmissions is less than the second number of retransmissions.
  • a random access message sending device the device is used in a terminal, and the device includes:
  • a memory for storing executable instructions of the processor
  • the processor is configured to:
  • the two-step random access process sending a first random access message according to a first retransmission configuration, where the first random access message includes a physical random access channel PRACH and a physical uplink shared channel PUSCH;
  • the specified content is sent according to the second retransmission configuration, where the specified content is the content of the first random access message in the PUSCH;
  • the first retransmission configuration is different from the second retransmission configuration.
  • a computer-readable storage medium containing executable instructions, and a processor in a terminal invokes the executable instructions to implement the above-mentioned first aspect Or the random access message sending method described in any optional implementation of the first aspect.
  • the terminal sends the first random access message and the specified content of the first random access message in the PUSCH through different retransmission configurations, so as to realize the two-step random access process
  • This optimization of sending different message contents improves the resource utilization of the system.
  • FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure
  • FIG. 2 is a method flowchart of a random access message sending method provided by an embodiment of the present disclosure
  • FIG. 3 is a method flowchart of a random access message sending method provided by an embodiment of the present disclosure
  • FIG. 4 is a block diagram of a random access message sending device provided by an embodiment of the present disclosure.
  • Fig. 5 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure.
  • 5G fifth-generation mobile communication technology
  • 5G fifth-generation mobile communication technology
  • FIG. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure.
  • the mobile communication system is a communication system based on cellular mobile communication technology, and the mobile communication system may include: Several terminals 110 and several base stations 120.
  • the terminal 110 may be a device that provides voice and/or data connectivity to the user.
  • the terminal 110 can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the terminal 110 can be an Internet of Things terminal, such as a sensor device, a mobile phone (or “cellular” phone), and
  • the computer of the Internet of Things terminal for example, may be a fixed, portable, pocket-sized, handheld, computer-built-in or vehicle-mounted device.
  • station Station, STA
  • subscriber unit subscriber unit
  • subscriber station subscriber station
  • mobile station mobile station
  • mobile station mobile
  • remote station remote station
  • access terminal access terminal
  • user device user terminal
  • user agent user agent
  • user equipment user device
  • user terminal user equipment
  • UE user terminal
  • the terminal 110 may also be a device of an unmanned aerial vehicle.
  • the base station 120 may be a network side device in a wireless communication system.
  • the wireless communication system may be a 5G system, also known as a new radio (NR) system.
  • the wireless communication system may also be the next-generation system of the 5G system.
  • the base station 120 may be a base station (gNB) adopting a centralized and distributed architecture in the 5G system.
  • the base station 120 adopts a centralized and distributed architecture it usually includes a centralized unit (CU) and at least two distributed units (DU).
  • the centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a media access control (Media Access Control, MAC) layer.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC media access control
  • the unit is provided with a physical (PHY) layer protocol stack, and the embodiment of the present disclosure does not limit the specific implementation of the base station 120.
  • PHY physical
  • a wireless connection can be established between the base station 120 and the terminal 110 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; or, the wireless air interface may also be a next-generation mobile based on 5G.
  • 5G fifth-generation mobile communication network technology
  • the wireless air interface of the communication network technology standard is a wireless air interface based on the fifth-generation mobile communication network technology standard.
  • the foregoing wireless communication system may further include a network management device 130.
  • the network management device 130 may be a core network device in a wireless communication system.
  • the network management device 130 may be a mobility management entity (Mobility Management Entity) in an evolved packet core network (Evolved Packet Core, EPC). MME).
  • the network management device may also be other core network devices, such as Serving GateWay (SGW), Public Data Network GateWay (PGW), Policy and Charging Rules function unit (Policy and Charging Rules). Function, PCRF) or Home Subscriber Server (HSS), etc.
  • SGW Serving GateWay
  • PGW Public Data Network GateWay
  • Policy and Charging Rules function unit Policy and Charging Rules
  • Function PCRF
  • HSS Home Subscriber Server
  • the terminal when the 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 .
  • MsgA sent by the terminal to the base station is composed of PRACH and PUSCH, and both of them are transmitted using Time Division Multiplexing (TDM) technology.
  • TDM Time Division Multiplexing
  • the base station when the terminal sends a complete MsgA to the base station, due to time division multiplexing, the base station will receive the PRACH of the MsgA and analyze the PUSCH of the MsgA. When the base station does not receive the PRACH of the MsgA, or, When the base station successfully receives the PRACH of the MsgA, but fails to parse the content in the PUSCH of the MsgA, the base station will fail to receive the MsgA. At this time, the terminal can retransmit the MsgA.
  • the scheme also introduces a threshold for the number of retransmissions, that is, a counter is set for the number of retransmissions of MsgA, and when the counter reaches a specified value, it stops the retransmission of MsgA. Retransmission.
  • the PRACH of MsgA mainly includes a preamble, and the probability of a single preamble collision that may occur is small.
  • the probability of collision in the second retransmission or even the third retransmission is lower, and the base station fails to receive MsgA. It is mostly caused by the unsuccessful analysis of the content in the PUSCH of MsgA.
  • the complete MsgA needs to be repeatedly transmitted every time, which causes the random access process to occupy more air interface resources and affect system resources. Utilization rate.
  • an embodiment of the present disclosure provides a random access message sending method.
  • FIG. 2 shows a method flowchart of a random access message sending method provided by an embodiment of the present disclosure.
  • the random access message sending method may be applied to the wireless communication system shown in FIG. 1 and executed by the terminal in FIG. 1.
  • the method may include the following steps.
  • a first random access message is sent according to a first retransmission configuration, and the first random access message includes a physical random access channel PRACH and a physical uplink shared channel PUSCH;
  • step 202 when the conditions for sending the specified content are met, the specified content is sent according to the second retransmission configuration, where the specified content is the content of the first random access message in the PUSCH; wherein, the first retransmission configuration Different from the second retransmission configuration.
  • the first retransmission configuration includes the first number of retransmissions corresponding to the first random access message
  • the sending the first random access message according to the first retransmission configuration includes:
  • the repeatedly sending the first random access message to the base station includes:
  • the adjusting the first transmission power of the last transmission of the first random access message according to the first power adjustment step to obtain the adjusted first transmission power includes:
  • the first power adjustment step size is added to the first transmission power of the last transmission of the first random access message to obtain the adjusted second transmission power.
  • the first power adjustment step size is the difference between the maximum transmit power of the terminal for sending the random access message and the transmit power of the first random access message for the first time, divided by the first number of retransmissions.
  • the specified content is sent according to the second retransmission configuration, including:
  • the second random access message of the specified type is a message returned when the base station successfully receives the PRACH of the first random access message and fails to parse the content of the first random access message in the PUSCH.
  • the second retransmission configuration includes a second number of retransmissions corresponding to the specified content, and the second number of retransmissions is different from the first number of retransmissions;
  • the sending the specified content according to the second retransmission configuration includes:
  • the repeated sending of the designated content to the base station includes:
  • the adjusting the second transmission power of the last transmission of the specified content according to the second power adjustment step to obtain the adjusted second transmission power includes:
  • the second power adjustment step size is added to the second transmission power of the last transmission of the designated content to obtain the adjusted second transmission power.
  • the second power adjustment step size is the difference between the maximum transmission power of the terminal for sending the random access message and the transmission power of the first transmission of the specified content, divided by the second number of retransmissions.
  • the first number of retransmissions is less than the second number of retransmissions.
  • the terminal sends the first random access message and the first random access message in the PUSCH through different retransmission configurations during the process of initiating two-step random access.
  • the terminal sends the first random access message and the first random access message in the PUSCH through different retransmission configurations during the process of initiating two-step random access.
  • the solution shown in the present disclosure can further optimize the first random access message and the specified content of the first random access message in the PUSCH every time.
  • the transmission power of the retransmission is optimized to further optimize and improve the sending effect of the random access message.
  • FIG. 3 shows a method flowchart of a random access message sending method provided by an embodiment of the present disclosure.
  • the random access message sending method can be applied to the wireless communication system shown in FIG. Executed by the terminal in 1, the method may include the following steps.
  • a first random access message is sent to the base station, where the first random access message includes a physical random access channel PRACH and a physical uplink shared channel PUSCH.
  • the path loss can be estimated based on the measured power of the synchronization signal block (SSB) sent by the base station downlink, and the received power of PRACH and PUSCH Calculate the transmit power of MsgA and send MsgA to the base station.
  • SSB synchronization signal block
  • the above-mentioned MsgA includes two parts, one part is PRACH, which mainly includes the preamble sequence for random access, and the other part is the content sent in PUSCH.
  • step 302 if the second random access message of the specified type returned by the base station is received within the first specified time period, the specified content is sent to the base station.
  • the specified content is the content of the first random access message in the PUSCH.
  • the first random access message is MsgA.
  • the second random access message of the specified type may be the second random access message returned to the terminal when the base station successfully receives the PRACH of the first random access message and fails to parse the content in the PUSCH of the first random access message. Random access message.
  • the second random access message of the specified type may be Msg2 type MsgB.
  • step 303 if the second random access message returned by the base station is not received within the second specified time period after the specified content is sent to the base station, and the number of retransmissions of the specified content does not reach the second number of retransmissions, Then the designated content is repeatedly sent to the base station.
  • the UE may set respective retransmission configurations for various types of random access messages, for example, set the first retransmission configuration for the first random access message, and set the first retransmission configuration for the first random access message.
  • the specified content in the message sets the second retransmission configuration, and the foregoing first retransmission configuration is different from the second retransmission configuration.
  • the foregoing first retransmission configuration may include the first retransmission times corresponding to the first random access message, and the second retransmission configuration includes the second retransmission times corresponding to the specified content, And, the second number of retransmissions is different from the first number of retransmissions.
  • the first number of retransmissions may be the upper limit of the number of times the first random access message is sent in a single random access process; correspondingly, the first number of retransmissions may be specified in the single random access process.
  • the upper limit of the number of times the content can be sent.
  • the UE may set a counter for the number of retransmissions for various types of random access messages. For example, if the first random access message is MsgA (including PRACH and PUSCH), the number of retransmissions of the MsgA is The upper limit of the value of the counter may be the above-mentioned first number of retransmissions; and for the above specified content, the upper limit of the numerical value of the counter of the number of retransmissions in the UE can be pre-configured as the first number of retransmissions.
  • MsgA including PRACH and PUSCH
  • the first number of retransmissions described above is less than the second number of retransmissions.
  • the UE may set a smaller upper limit of the number of retransmissions for MsgA with complete content in advance, and set a larger upper limit of the number of retransmissions separately for the specified content in the PUSCH of MsgA.
  • the foregoing first retransmission times and second retransmission times may be configured by the system through radio resource control (Radio Resource Control, RRC) signaling.
  • RRC Radio Resource Control
  • the serving base station sends configuration information to the UE through RRC signaling, and the UE configures or updates the foregoing first retransmission times and second retransmission times according to the configuration information.
  • the above-mentioned first retransmission times and second retransmission times can also be configured by the base station through broadcast signaling.
  • the terminal first monitors the broadcast sent by the base station before initiating random access to the base station. Channel, and configure or update the first number of retransmissions and the second number of retransmissions according to the configuration information carried in the broadcast channel.
  • the UE may also separately set the upper limit of the value of the counter of the number of retransmissions for the PRACH of the first random access message in advance.
  • the UE may predefine the upper limit of the counter of the number of PRACH retransmissions of the first random access message, which is the same as the first number of retransmissions or the second number of retransmissions.
  • the UE can set the first The number of retransmissions or the second number of retransmissions is set as the upper limit of the value of the counter of the number of PRACH retransmissions of the first random access message.
  • the system may directly indicate the upper limit of the number of PRACH retransmissions of the first random access message through RRC signaling or broadcast signaling, and accordingly, the UE may send it through RRC signaling according to the system. Or, directly configure the upper limit of the value of the counter of the number of PRACH retransmissions of the first random access message according to the configuration information sent by the broadcast signaling of the base station.
  • the terminal when repeatedly sending the designated content to the base station, the terminal may perform the following steps:
  • the terminal when the terminal determines that the base station fails to parse the above specified content, if the number of retransmissions of the specified content has not reached the second number of retransmissions, the terminal can retransmit the specified content according to a certain The step size adjusts the transmission power of the specified content.
  • the terminal may add the second transmission power of the last transmission of the specified content.
  • the second power adjustment step is used to obtain the adjusted second transmission power.
  • the terminal when the terminal adjusts the transmission power of the specified content, it can increase the transmission power of the specified content according to the above-mentioned second power adjustment step, so as to increase the probability of the base station successfully parse the specified content, thereby increasing the success rate of random access .
  • the second power adjustment step size is the difference between the maximum transmission power of the terminal for sending the random access message and the transmission power of the first transmission of the specified content, divided by the second number of retransmissions.
  • the terminal can obtain the transmit power of the specified content for the first time during this random access process, and subtract the maximum transmit power of the random access message for the terminal from the transmit power of the specified content for the first time, and divide by the second
  • the number of retransmissions is the second power adjustment step for adjusting the transmission power of the specified content, so that when the number of retransmissions of the specified content reaches the second number of retransmissions, the transmission power reaches the terminal sending the random access message.
  • Maximum transmission power so as to realize the reasonable adjustment of the transmission power of the specified content, and avoid power waste while ensuring the transmission effect of the specified content.
  • step 304 if the second random access message returned by the base station is not received within the first designated time period, and the number of retransmissions of the first random access message has not reached the first number of retransmissions, then the The base station repeatedly sends the first random access message.
  • the base station if the base station does not receive the PRACH of the first random access message (for example, MsgA), it will not feed back any form of MsgB message to the terminal. Therefore, after the terminal sends MsgA, if it is in the first If the MsgB returned by the base station is not received within the specified time period, it is considered that the base station has not successfully received the preamble sequence. At this time, if the number of transmissions of MsgA has not reached the first number of retransmissions, the terminal can retransmit the complete MsgA.
  • MsgA the PRACH of the first random access message
  • the terminal when repeatedly sending the first random access message to the base station, the terminal may perform the following steps:
  • the terminal when the terminal determines that the base station fails to successfully receive the preamble sequence in the first random access message, if the number of retransmissions of the first random access message has not reached the first number of retransmissions, the terminal When the first random access message is repeatedly sent, the transmission power of the first random access message may be adjusted according to a certain step.
  • the terminal when adjusting the first transmission power of the last transmission of the first random access message according to the first power adjustment step, the terminal may perform the first transmission of the first random access message in the last transmission.
  • the first power adjustment step size is added to the transmission power to obtain the adjusted first transmission power.
  • the terminal when the terminal adjusts the transmission power of the first random access message, it can increase the transmission power of the first random access message according to the above-mentioned first power adjustment step, so as to improve the base station's successful analysis of the first random access. The probability of the message, thereby increasing the success rate of random access.
  • the first power adjustment step size is the difference between the maximum transmit power of the terminal for sending the random access message and the transmit power of the first random access message for the first time, divided by the first number of retransmissions.
  • the terminal may obtain the transmission power of the first random access message sent for the first time during this random access process, and subtract the maximum transmission power of the terminal for sending the random access message from the first random access message sent for the first time.
  • the first power adjustment step size for adjusting the transmission power of the first random access message, so that when the retransmission times of the first random access message reach the first retransmission
  • its transmission power also reaches the maximum transmission power of the random access message sent by the terminal, so as to realize a reasonable adjustment of the transmission power of the first random access message, while ensuring the transmission effect of the first random access message , Avoid power waste.
  • the base station may separately configure retransmission counters for various types of random access messages sent by the UE through RRC signaling or broadcast signaling in advance, for example, configure MsgA (including PRACH and PUSCH)
  • MsgA including PRACH and PUSCH
  • the upper count limit of the retransmission counter (corresponding to the above-mentioned first retransmission times) is the value A
  • the upper count limit of the retransmission counter configured for the specified content sent on the PUSCH in MsgA (corresponding to the above-mentioned second retransmission times) is the value B
  • the value A is less than the value B.
  • the upper limit of the count of the retransmission counter of the PRACH of MsgA configured in the UE may be equal to the value A or the value B, which may be predefined or configured by the base station.
  • the UE After the UE decides to initiate a two-step random access according to the judgment conditions and the base station configuration, it sends the complete MsgA (including PRACH and PUSCH). If no feedback from the base station is received, the UE retransmits the MsgA until the base station feeds back, or until Stop after the number of retransmissions reaches the value A.
  • the complete MsgA including PRACH and PUSCH.
  • the UE If the UE receives feedback from the base station after sending MsgA for a certain time, and the base station feeds back an Msg2 type MsgB, the UE understands that the base station has successfully received the PRACH of MsgA, but failed to parse the content on the PUSCH of MsgA. At this time, the UE may choose to send the content of MsgA on the PUSCH separately until the base station feeds back MsgB, or stop after the number of retransmissions of the content of MsgA on the PUSCH reaches the value B.
  • the UE Based on the numerical upper limit of the retransmission counters of different random access messages, the UE sets the power adjustment step size for different random access messages respectively.
  • the terminal sends the first random access message and the first random access message in the PUSCH through different retransmission configurations during the process of initiating two-step random access.
  • the terminal sends the first random access message and the first random access message in the PUSCH through different retransmission configurations during the process of initiating two-step random access.
  • the terminal sets the number of retransmissions for different types of random access messages (including the complete MsgA, the specified content of MsgA on the PUSCH, and the PRACH of MsgA) respectively, so as to realize the random access message.
  • the optimization of message retransmission during the access process improves system performance.
  • the solution shown in the embodiment of the present disclosure also sets the adjustment step size of the transmission power of different types of random access messages for the upper limit of the number of retransmissions of different types of random access messages, so as to realize the random access process. Optimization of power control in.
  • Fig. 4 is a block diagram of a random access message sending apparatus provided by an embodiment of the present disclosure.
  • the random access message sending apparatus can be implemented as the wireless communication shown in Fig. 1 through hardware or a combination of software and hardware. All or part of the terminal in the system is to execute the steps executed by the terminal in any one of the embodiments shown in FIG. 2 or FIG. 3.
  • the random access message sending apparatus may include:
  • the first sending module 401 is configured to send a first random access message according to a first retransmission configuration in a two-step random access process, where the first random access message includes a physical random access channel PRACH and physical uplink sharing Channel PUSCH;
  • the second sending module 402 is configured to send the specified content according to a second retransmission configuration when the condition for sending the specified content is met, where the specified content is the content of the first random access message in the PUSCH;
  • the first retransmission configuration is different from the second retransmission configuration.
  • the first retransmission configuration includes the first number of retransmissions corresponding to the first random access message
  • the first sending module 401 is configured to: when the second random access message returned by the base station is not received within a first specified time period after the first random access message is sent last time, and the first random access message is When the number of retransmissions does not reach the first number of retransmissions, repeatedly sending the first random access message to the base station.
  • the first sending module 401 includes:
  • the first step length obtaining submodule is configured to obtain the first power adjustment step size of the first random access message
  • the first power adjustment submodule is configured to adjust the first transmission power of the last transmission of the first random access message according to the first power adjustment step size to obtain the adjusted first transmission power;
  • the first sending submodule is configured to repeatedly send the first random access message to the base station according to the adjusted first transmission power.
  • the first power adjustment submodule is configured to add the first power adjustment step size to the first transmission power of the last transmission of the first random access message to obtain the The adjusted second transmit power.
  • the first power adjustment step size is the difference between the maximum transmit power of the terminal for sending the random access message and the transmit power of the first random access message for the first time, divided by the first repeat Passing times.
  • the second sending module 402 is configured to receive a second random access of a specified type returned by the base station within the first specified time period after the first random access message was sent last time When sending a message, send the specified content according to the second retransmission configuration;
  • the second random access message of the specified type is returned when the base station successfully receives the PRACH of the first random access message and fails to parse the content of the first random access message in the PUSCH News.
  • the second retransmission configuration includes a second retransmission count corresponding to the specified content, and the second retransmission count is different from the first retransmission count;
  • the second sending module 402 is configured to: when the second random access message returned by the base station is not received within a second specified time period after the specified content was sent last time, and the number of retransmissions of the specified content is not When the second number of retransmissions is reached, repeatedly sending the specified content to the base station.
  • the second sending module 402 includes:
  • the second step size obtaining submodule is used to obtain the second power adjustment step size of the specified content
  • the second power adjustment submodule is configured to adjust the second transmission power of the last transmission of the specified content according to the second power adjustment step size, to obtain the adjusted second transmission power;
  • the second transmission submodule is configured to retransmit the specified content to the base station according to the adjusted second transmission power.
  • the second power adjustment submodule is configured to add the second power adjustment step size to the second transmission power of the last transmission of the specified content to obtain the adjusted Second transmission power.
  • the second power adjustment step size is the difference between the maximum transmission power of the terminal for sending the random access message and the transmission power of the first transmission of the specified content, divided by the second number of retransmissions.
  • the first number of retransmissions is less than the second number of retransmissions.
  • the terminal sends the first random access message and the first random access message in the PUSCH through different retransmission configurations during the process of initiating two-step random access.
  • the terminal sends the first random access message and the first random access message in the PUSCH through different retransmission configurations during the process of initiating two-step random access.
  • the terminal sets the number of retransmissions for different types of random access messages (including the complete MsgA, the specified content of MsgA on the PUSCH, and the PRACH of MsgA) respectively, so as to realize the random access message.
  • the optimization of message retransmission during the access process improves system performance.
  • the solution shown in the embodiment of the present disclosure also sets the adjustment step size of the transmission power of different types of random access messages for the upper limit of the number of retransmissions of different types of random access messages, so as to realize the random access process. Optimization of power control in.
  • the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used for illustration. In actual applications, the above functions can be allocated by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • An exemplary embodiment of the present disclosure provides a random access message sending device, which can implement all or part of the steps performed by a terminal in the embodiment shown in FIG. 2 or FIG. 3 of the present disclosure.
  • the random access message sending device includes : Processor, memory used to store executable instructions of the processor;
  • the processor is configured to:
  • the two-step random access process sending a first random access message according to a first retransmission configuration, where the first random access message includes a physical random access channel PRACH and a physical uplink shared channel PUSCH;
  • the specified content is sent according to the second retransmission configuration, where the specified content is the content of the first random access message in the PUSCH;
  • the first retransmission configuration is different from the second retransmission configuration.
  • the first retransmission configuration includes the first number of retransmissions corresponding to the first random access message
  • the sending the first random access message according to the first retransmission configuration includes:
  • the first random access message is repeatedly sent to the base station.
  • the repeatedly sending the first random access message to the base station includes:
  • the adjusting the first transmission power of the last transmission of the first random access message according to the first power adjustment step to obtain the adjusted first transmission power includes:
  • the first power adjustment step size is added to the first transmission power of the last transmission of the first random access message to obtain the adjusted second transmission power.
  • the first power adjustment step size is the difference between the maximum transmit power of the terminal for sending the random access message and the transmit power of the first random access message for the first time, divided by the first repeat Passing times.
  • sending the specified content according to the second retransmission configuration includes:
  • the second random access message is sent according to the second retransmission configuration.
  • the second random access message of the specified type is returned when the base station successfully receives the PRACH of the first random access message and fails to parse the content of the first random access message in the PUSCH News.
  • the second retransmission configuration includes a second retransmission count corresponding to the specified content, and the second retransmission count is different from the first retransmission count;
  • the sending the specified content according to the second retransmission configuration includes:
  • the repeatedly sending the specified content to the base station includes:
  • the adjusting the second transmission power of the last transmission of the specified content according to the second power adjustment step to obtain the adjusted second transmission power includes:
  • the second power adjustment step size is added to the second transmission power of the last transmission of the specified content to obtain the adjusted second transmission power.
  • the second power adjustment step size is the difference between the maximum transmission power of the terminal for sending the random access message and the transmission power of the first transmission of the specified content, divided by the second number of retransmissions.
  • the first number of retransmissions is less than the second number of retransmissions.
  • the terminal sends the first random access message and the first random access message in the PUSCH through different retransmission configurations during the process of initiating two-step random access.
  • the terminal sends the first random access message and the first random access message in the PUSCH through different retransmission configurations during the process of initiating two-step random access.
  • the terminal sets the number of retransmissions for different types of random access messages (including the complete MsgA, the specified content of MsgA on the PUSCH, and the PRACH of MsgA) respectively, so as to realize the random access message.
  • the optimization of message retransmission during the access process improves system performance.
  • the solution shown in the embodiment of the present disclosure also sets the adjustment step size of the transmission power of different types of random access messages for the upper limit of the number of retransmissions of different types of random access messages, so as to realize the random access process. Optimization of power control in.
  • the terminal and the base station include hardware structures and/or software modules corresponding to each function.
  • the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed by hardware or computer software-driven hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the technical solutions of the embodiments of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure. As shown in Figure 5:
  • the terminal 500 includes a communication unit 504 and a processor 502.
  • the processor 502 may also be a controller, which is represented as "controller/processor 502" in FIG. 5.
  • the communication unit 504 is used to support the terminal to communicate with other network devices (such as base stations, etc.).
  • the terminal 500 may further include a memory 503, and the memory 503 is used to store program codes and data of the terminal 500.
  • FIG. 5 only shows a simplified design of the terminal 500.
  • the terminal 500 may include any number of processors, controllers, memories, communication units, etc., and all terminals that can implement the embodiments of the present disclosure are within the protection scope of the embodiments of the present disclosure.
  • the functions described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium.
  • the computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another.
  • the storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.
  • the embodiment of the present disclosure also provides a computer storage medium for storing computer software instructions used by the above-mentioned terminal, which includes a program designed for executing the above-mentioned random access message sending method.

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Abstract

本公开揭示了一种随机接入消息发送方法，属于无线通信技术领域。所述方法由终端执行，所述方法包括：在两步随机接入过程中，按照第一重传配置发送第一随机接入消息，所述第一随机接入消息包括PRACH以及PUSCH；当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，所述指定内容是所述第一随机接入消息在PUSCH中的内容；其中，所述第一重传配置不同于所述第二重传配置。通过本方案，终端在发起两步随机接入的过程中，分别通过不同的重发配置来发送第一随机接入消息以及第一随机接入消息在PUSCH中的指定内容，从而实现对两步随机接入过程这种不同消息内容的发送优化，提高系统的资源利用率。

Description

随机接入消息发送方法、装置及存储介质 技术领域
本公开涉及无线通信技术领域，特别涉及一种随机接入消息发送方法、装置及存储介质。
背景技术
在蜂窝移动通信技术中，为了应对移动数据日益增长的通信需求，蜂窝移动通信技术已经发展到了新空口(New Radio，NR)系统。
在NR系统中，终端可以通过两步随机接入方式向基站发起接入。在相关技术中，NR系统中的终端在发起两步随机接入中的第一步，便是向基站发送第一随机接入消息(MsgA)。进一步的，当终端未能完整接收到该MsgA，且第一随机接入消息的重传次数未达到预设值时，终端可以继续对第一随机接入消息进行重传。
发明内容
本公开提供一种随机接入消息发送方法、装置及存储介质。所述技术方案如下：
根据本公开实施例的第一方面，提供了一种随机接入消息发送方法，所述方法由终端执行，所述方法包括：
在两步随机接入过程中，按照第一重传配置发送第一随机接入消息，所述第一随机接入消息包括物理随机接入信道PRACH以及物理上行共享信道PUSCH；
当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，所述指定内容是所述第一随机接入消息在PUSCH中的内容；
其中，所述第一重传配置不同于所述第二重传配置。
在一种可能的实现方式中，所述第一重传配置中包含所述第一随机接入消息对应的第一重传次数，所述按照第一重传配置发送第一随机接入消息，包括：
当上一次发送所述第一随机接入消息之后的第一指定时长内未接收到基站 返回的第二随机接入消息，且所述第一随机消息的重传次数未达到所述第一重传次数时，向所述基站重复发送所述第一随机接入消息。
在一种可能的实现方式中，所述向所述基站重复发送所述第一随机接入消息，包括：
获取所述第一随机接入消息的第一功率调整步长；
根据所述第一功率调整步长对上一次发送所述第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率；
根据所述调整后的第一发送功率向所述基站重复发送所述第一随机接入消息。
在一种可能的实现方式中，所述根据所述第一功率调整步长对上一次发送所述第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率，包括：
在所述上一次发送所述第一随机接入消息的第一发送功率的基础上加上所述第一功率调整步长，获得所述调整后的第二发送功率。
在一种可能的实现方式中，所述第一功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述第一随机接入消息的发送功率之差后，除以所述第一重传次数。
在一种可能的实现方式中，所述当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，包括：
当上一次发送所述第一随机接入消息之后的所述第一指定时长内接收到所述基站返回的指定类型的第二随机接入消息时，按照所述第二重传配置发送所述指定内容；
其中，所述指定类型的第二随机接入消息是所述基站在成功接收到所述第一随机接入消息的PRACH，且解析所述第一随机接入消息在PUSCH中的内容失败时返回的消息。
在一种可能的实现方式中，所述第二重传配置中包含所述指定内容对应的第二重传次数，所述第二重传次数不同于所述第一重传次数；
所述按照所述第二重传配置发送所述指定内容，包括：
当上一次发送所述指定内容之后的第二指定时长内未接收到所述基站返回的第二随机接入消息，且所述指定内容的重传次数未达到所述第二重传次数时，向所述基站重复发送所述指定内容。
在一种可能的实现方式中，所述向所述基站重复发送所述指定内容，包括：
获取所述指定内容的第二功率调整步长；
根据所述第二功率调整步长对上一次发送所述指定内容的第二发送功率进行调整，获得调整后的第二发送功率；
根据所述调整后的第二发送功率向所述基站重传所述指定内容。
在一种可能的实现方式中，所述根据所述第二功率调整步长对上一次发送所述指定内容的第二发送功率进行调整，获得调整后的第二发送功率，包括：
在所述上一次发送所述指定内容的第二发送功率的基础上加上所述第二功率调整步长，获得所述调整后的第二发送功率。
在一种可能的实现方式中，所述第二功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述指定内容的发送功率之差后，除以所述第二重传次数。
在一种可能的实现方式中，所述第一重传次数小于所述第二重传次数。
根据本公开实施例的第二方面，提供了一种随机接入消息发送装置，所述装置用于终端中，所述装置包括：
第一发送模块，用于在两步随机接入过程中，按照第一重传配置发送第一随机接入消息，所述第一随机接入消息包括物理随机接入信道PRACH以及物理上行共享信道PUSCH；
第二发送模块，用于当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，所述指定内容是所述第一随机接入消息在PUSCH中的内容；
其中，所述第一重传配置不同于所述第二重传配置。
在一种可能的实现方式中，所述第一重传配置中包含所述第一随机接入消息对应的第一重传次数，
所述第一发送模块，用于当上一次发送所述第一随机接入消息之后的第一指定时长内未接收到基站返回的第二随机接入消息，且所述第一随机消息的重传次数未达到所述第一重传次数时，向所述基站重复发送所述第一随机接入消息。
在一种可能的实现方式中，所述第一发送模块，包括：
第一步长获取子模块，用于获取所述第一随机接入消息的第一功率调整步长；
第一功率调整子模块，用于根据所述第一功率调整步长对上一次发送所述 第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率；
第一发送子模块，用于根据所述调整后的第一发送功率向所述基站重复发送所述第一随机接入消息。
在一种可能的实现方式中，所述第一功率调整子模块，用于在所述上一次发送所述第一随机接入消息的第一发送功率的基础上加上所述第一功率调整步长，获得所述调整后的第二发送功率。
在一种可能的实现方式中，所述第一功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述第一随机接入消息的发送功率之差后，除以所述第一重传次数。
在一种可能的实现方式中，所述第二发送模块，用于当上一次发送所述第一随机接入消息之后的所述第一指定时长内接收到所述基站返回的指定类型的第二随机接入消息时，按照所述第二重传配置发送所述指定内容；
其中，所述指定类型的第二随机接入消息是所述基站在成功接收到所述第一随机接入消息的PRACH，且解析所述第一随机接入消息在PUSCH中的内容失败时返回的消息。
在一种可能的实现方式中，所述第二重传配置中包含所述指定内容对应的第二重传次数，所述第二重传次数不同于所述第一重传次数；
所述第二发送模块，用于当上一次发送所述指定内容之后的第二指定时长内未接收到所述基站返回的第二随机接入消息，且所述指定内容的重传次数未达到所述第二重传次数时，向所述基站重复发送所述指定内容。
在一种可能的实现方式中，所述二发送模块，包括：
第二步长获取子模块，用于获取所述指定内容的第二功率调整步长；
第二功率调整子模块，用于根据所述第二功率调整步长对上一次发送所述指定内容的第二发送功率进行调整，获得调整后的第二发送功率；
第二发送子模块，用于根据所述调整后的第二发送功率向所述基站重传所述指定内容。
在一种可能的实现方式中，所述第二功率调整子模块，用于在所述上一次发送所述指定内容的第二发送功率的基础上加上所述第二功率调整步长，获得所述调整后的第二发送功率。
在一种可能的实现方式中，所述第二功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述指定内容的发送功率之差后，除以所述 第二重传次数。
在一种可能的实现方式中，所述第一重传次数小于所述第二重传次数。
根据本公开实施例的第三方面，提供了一种随机接入消息发送装置，所述装置用于终端中，所述装置包括：
处理器；
用于存储所述处理器的可执行指令的存储器；
其中，所述处理器被配置为：
在两步随机接入过程中，按照第一重传配置发送第一随机接入消息，所述第一随机接入消息包括物理随机接入信道PRACH以及物理上行共享信道PUSCH；
当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，所述指定内容是所述第一随机接入消息在PUSCH中的内容；
其中，所述第一重传配置不同于所述第二重传配置。
根据本公开实施例的第四方面，提供了一种计算机可读存储介质，所述计算机可读存储介质中包含可执行指令，终端中的处理器调用所述可执行指令以实现上述第一方面或者第一方面的任一可选实现方式所述的随机接入消息发送方法。
本公开的实施例提供的技术方案可以包括以下有益效果：
终端在发起两步随机接入的过程中，分别通过不同的重发配置来发送第一随机接入消息以及第一随机接入消息在PUSCH中的指定内容，从而实现对两步随机接入过程这种不同消息内容的发送优化，提高系统的资源利用率。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本公开。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本公开实施例提供的一种无线通信系统的结构示意图；
图2是本公开实施例提供的一种随机接入消息发送方法的方法流程图；
图3是本公开实施例提供的一种随机接入消息发送方法的方法流程图；
图4是本公开实施例提供的一种随机接入消息发送装置的框图；
图5是本公开实施例提供的一种终端的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
应当理解的是，在本文中提及的“若干个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
随着无线通信技术领域的发展，移动数据日益增长迅速，为了满足迅速增长的移动数据的通信需求，业内开展了对第五代移动通信技术(Fifth-generation，5G)技术，也称新空口NR技术两步随机接入的标准化研究。
请参考图1，其示出了本公开实施例提供的一种无线通信系统的结构示意图，如图1所示，移动通信系统是基于蜂窝移动通信技术的通信系统，该移动通信系统可以包括：若干个终端110以及若干个基站120。
其中，终端110可以是指向用户提供语音和/或数据连通性的设备。终端110可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，终端110可以是物联网终端，如传感器设备、移动电话(或称为“蜂窝”电话)和具有物联网终端的计算机，例如，可以是固定式、便携式、袖珍式、手持式、计算机内置的或者车载的装置。例如，站(Station，STA)、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点、远程终端(remote terminal)、接入终端(access terminal)、用户装置(user terminal)、用户代理(user agent)、用户设备(user  device)、或用户终端(user equipment，UE)。或者，终端110也可以是无人飞行器的设备。
基站120可以是无线通信系统中的网络侧设备。其中，该无线通信系统可以是5G系统，又称新空口(new radio，NR)系统。或者，该无线通信系统也可以是5G系统的再下一代系统。
其中，基站120可以是5G系统中采用集中分布式架构的基站(gNB)。当基站120采用集中分布式架构时，通常包括集中单元(central unit，CU)和至少两个分布单元(distributed unit，DU)。集中单元中设置有分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路层控制协议(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层的协议栈；分布单元中设置有物理(Physical，PHY)层协议栈，本公开实施例对基站120的具体实现方式不加以限定。
基站120和终端110之间可以通过无线空口建立无线连接。在不同的实施方式中，该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口，比如该无线空口是新空口；或者，该无线空口也可以是基于5G的更下一代移动通信网络技术标准的无线空口。
可选的，上述无线通信系统还可以包含网络管理设备130。
若干个基站120分别与网络管理设备130相连。其中，网络管理设备130可以是无线通信系统中的核心网设备，比如，该网络管理设备130可以是演进的数据分组核心网(Evolved Packet Core，EPC)中的移动性管理实体(Mobility Management Entity，MME)。或者，该网络管理设备也可以是其它的核心网设备，比如服务网关(Serving GateWay，SGW)、公用数据网网关(Public Data Network GateWay，PGW)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)或者归属签约用户服务器(Home Subscriber Server，HSS)等。对于网络管理设备130的实现形态，本公开实施例不做限定。
在NR系统中，终端选择两步随机接入时，可以向基站发送第一随机接入消息MsgA，基站成功接收到该MsgA后，可以向终端返回第二随机接入消息(也称为MsgB)。其中，终端向基站发送的MsgA是由PRACH和PUSCH组成的，且两者采用时分复用(Time Division Multiplexing，TDM)技术进行传输。
在一种可能的实现方案中，终端向基站发送完整的MsgA时，由于时分复用的而关系，基站会接收MsgA的PRACH，并解析MsgA的PUSCH，当基站 未接收到MsgA的PRACH，或者，基站成功接收到MsgA的PRACH，但是解析MsgA的PUSCH中的内容失败时，都会导致基站接收MsgA失败，此时，终端可以对MsgA进行重传。为了避免在网络条件较差等情况下对MsgA无限制的重传，该方案还引入了重传次数门限，即对MsgA的重传次数设置一个计数器，当计数器达到指定值时，停止对MsgA的重传。
然而，上述方案存在以下问题：
MsgA的PRACH主要包括前导序列(preamble)，而单次可能发生的preamble碰撞的概率较小，第二次重传甚至第三次重传都发生碰撞的概率更低，基站接收MsgA失败的情况更多是由于未能成功解析MsgA的PUSCH中的内容导致的，而在重复传输时，需要每次都对完整的MsgA进行重复传输，导致随机接入过程占用较多的空口资源，影响系统的资源利用率。
为了避免上述存在的问题，本公开实施例提供了一种随机接入消息发送方法，请参考图2，其示出了本公开实施例提供的一种随机接入消息发送方法的方法流程图，该随机接入消息发送方法可以应用于图1所示的无线通信系统中，由图1中的终端执行，该方法可以包括以下步骤。
在步骤201中，在两步随机接入过程中，按照第一重传配置发送第一随机接入消息，该第一随机接入消息包括物理随机接入信道PRACH以及物理上行共享信道PUSCH；
在步骤202中，当满足发送指定内容的条件时，按照第二重传配置发送该指定内容，该指定内容是该第一随机接入消息在PUSCH中的内容；其中，该第一重传配置不同于该第二重传配置。
可选的，该第一重传配置中包含该第一随机接入消息对应的第一重传次数，该按照第一重传配置发送第一随机接入消息，包括：
当上一次发送该第一随机接入消息之后的第一指定时长内未接收到基站返回的第二随机接入消息，且该第一随机消息的重传次数未达到该第一重传次数时，向该基站重复发送该第一随机接入消息。
可选的，该向该基站重复发送该第一随机接入消息，包括：
获取该第一随机接入消息的第一功率调整步长；
根据该第一功率调整步长对上一次发送该第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率；
根据该调整后的第一发送功率向该基站重复发送该第一随机接入消息。
可选的，该根据该第一功率调整步长对上一次发送该第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率，包括：
在该上一次发送该第一随机接入消息的第一发送功率的基础上加上该第一功率调整步长，获得该调整后的第二发送功率。
可选的，该第一功率调整步长是该终端发送随机接入消息的最大发送功率与首次发送该第一随机接入消息的发送功率之差后，除以该第一重传次数。
可选的，该当满足发送指定内容的条件时，按照第二重传配置发送该指定内容，包括：
当上一次发送该第一随机接入消息之后的该第一指定时长内接收到该基站返回的指定类型的第二随机接入消息时，按照该第二重传配置发送该指定内容；
其中，该指定类型的第二随机接入消息是该基站在成功接收到该第一随机接入消息的PRACH，且解析该第一随机接入消息在PUSCH中的内容失败时返回的消息。
可选的，该第二重传配置中包含该指定内容对应的第二重传次数，该第二重传次数不同于该第一重传次数；
该按照该第二重传配置发送该指定内容，包括：
当上一次发送该指定内容之后的第二指定时长内未接收到该基站返回的第二随机接入消息，且该指定内容的重传次数未达到该第二重传次数时，向该基站重复发送该指定内容。
可选的，该向该基站重复发送该指定内容，包括：
获取该指定内容的第二功率调整步长；
根据该第二功率调整步长对上一次发送该指定内容的第二发送功率进行调整，获得调整后的第二发送功率；
根据该调整后的第二发送功率向该基站重传该指定内容。
可选的，该根据该第二功率调整步长对上一次发送该指定内容的第二发送功率进行调整，获得调整后的第二发送功率，包括：
在该上一次发送该指定内容的第二发送功率的基础上加上该第二功率调整步长，获得该调整后的第二发送功率。
可选的，该第二功率调整步长是该终端发送随机接入消息的最大发送功率与首次发送该指定内容的发送功率之差后，除以该第二重传次数。
可选的，该第一重传次数小于该第二重传次数。
综上所述，本公开实施例所示的方案，终端在发起两步随机接入的过程中，分别通过不同的重发配置来发送第一随机接入消息以及第一随机接入消息在PUSCH中的指定内容，从而实现对两步随机接入过程这种不同消息内容的发送优化，提高系统的资源利用率。
除了对两步随机接入过程这种不同消息内容的发送优化之外，本公开所示的方案还可以进一步对第一随机接入消息以及第一随机接入消息在PUSCH中的指定内容每次重传的发送功率进行优化，以进一步优化提高随机接入消息的发送效果。
请参考图3，其示出了本公开实施例提供的一种随机接入消息发送方法的方法流程图，该随机接入消息发送方法可以应用于图1所示的无线通信系统中，由图1中的终端执行，该方法可以包括以下步骤。
在步骤301中，向基站发送第一随机接入消息，该第一随机接入消息包括物理随机接入信道PRACH以及物理上行共享信道PUSCH。
在一种示例性的方案中，UE需要接入网络时，可以根据对基站下行发送的同步信号块(Synchronizing Signal Block，SSB)的测量功率估计路损，并根据对PRACH和PUSCH的接收功率来计算MsgA的发射功率，并向基站发送MsgA。
其中，上述MsgA包含两部分，一部分是PRACH，主要包括随机接入的前导序列，另一部分是在PUSCH中发送的内容。
在步骤302中，若在第一指定时长内接收到该基站返回的指定类型的第二随机接入消息，则向该基站发送指定内容。
其中，该指定内容是该第一随机接入消息在PUSCH中的内容。
可选的，该第一随机接入消息为MsgA。
其中，上述指定类型的第二随机接入消息可以是基站在成功接收到第一随机接入消息的PRACH，且解析第一随机接入消息的PUSCH中的内容失败时，向终端返回的第二随机接入消息。
例如，当第一随机接入消息为MsgA时，上述指定类型的第二随机接入消息可以是Msg2类型的MsgB。
在步骤303中，若在向该基站发送指定内容后的第二指定时长内未接收到该基站返回的第二随机接入消息，且该指定内容的重传次数未达到第二重传次 数，则向该基站重复发送该指定内容。
在本公开实施例中，UE中可以为各种类型的随机接入消息分别设置各自的重传配置，比如，为第一随机接入消息设置第一重传配置，并为第一随机接入消息中的指定内容设置第二重传配置，并且，上述第一重传配置不同于第二重传配置。
在一种可能的实现方式中，上述第一重传配置中可以包含第一随机接入消息对应的第一重传次数，而第二重传配置中包含指定内容对应的第二重传次数，并且，第二重传次数不同于第一重传次数。
其中，上述第一重传次数可以是单次随机接入过程中，第一随机接入消息的发送次数的上限；相应的，上述第一重传次数可以是单次随机接入过程中，指定内容的发送次数的上限。
例如，UE中可以为各种类型的随机接入消息分别设置的重传次数的计数器，比如，以第一随机接入消息为MsgA(包括PRACH以及PUSCH)为例，该MsgA的重传次数的计数器的数值上限可以为上述第一重传次数；而对于上述指定内容，UE中可以预先配置其重传次数的计数器的数值上限为第一重传次数。
可选的，上述第一重传次数小于该第二重传次数。
以第一随机接入消息是MsgA为例，由于MsgA的PRACH(即preamble)发生碰撞的概率较小，而基站未能成功解析MsgA的PUSCH中的内容的可能性更高，因此，在本公开实施例中，UE中可以预先为内容完整的MsgA设置较少的重传次数上限，并为MsgA的PUSCH中的指定内容单独设置较多的重传次数上限。
在一种可能的实现方案中，上述第一重传次数和第二重传次数可以是由系统通过无线资源控制(Radio Resource Control，RRC)信令进行配置。比如，UE接入某一服务基站时，服务基站通过RRC信令向UE发送配置信息，UE根据该配置信息配置或者更新上述第一重传次数和第二重传次数。
在另一种可能的实现方案中，上述第一重传次数和第二重传次数也可以由基站通过广播信令进行配置，比如，终端向基站发起随机接入之前，先监听基站发送的广播信道，并根据广播信道中携带的配置信息配置或者更新上述第一重传次数和第二重传次数。
可选的，UE中还可以预先为第一随机接入消息的PRACH单独设置其重传 次数的计数器的数值上限。
比如，在一种示例性的方案中，UE可以预先定义第一随机接入消息的PRACH的重传次数的计数器的数值上限，与上述第一重传次数或者第二重传次数相同。当UE按照系统通过RRC信令发送的配置信息，或者，按照基站通过的广播信令发送的配置信息配置上述第一重传次数或者第二重传次数之后，UE可以按照预定义，将第一重传次数或者第二重传次数设置为第一随机接入消息的PRACH的重传次数的计数器的数值上限。
或者，在另一种示例性的方案中，系统可以通过RRC信令或者广播信令直接指示第一随机接入消息的PRACH的重传次数上限，相应的，UE可以按照系统通过RRC信令发送的配置信息，或者，按照基站通过的广播信令发送的配置信息，直接配置上述第一随机接入消息的PRACH的重传次数的计数器的数值上限。
可选的，在向该基站重复发送该指定内容时，终端可以执行如下步骤：
获取该指定内容的第二功率调整步长；
根据该第二功率调整步长对上一次发送该指定内容的第二发送功率进行调整，获得调整后的第二发送功率；
根据该调整后的第二发送功率向该基站重传该指定内容。
在本公开实施例中，终端在确定基站未能解析到上述指定内容时，若该指定内容的重传次数尚未达到第二重传次数，则终端在重传该指定内容时，可以按照一定的步长调整指定内容的发送功率。
可选的，在根据该第二功率调整步长对上一次发送该指定内容的第二发送功率进行调整时，终端可以在该上一次发送该指定内容的第二发送功率的基础上加上该第二功率调整步长，获得该调整后的第二发送功率。
在本公开实施例中，终端调整指定内容的发送功率时，可以按照上述第二功率调整步长增加指定内容的发送功率，以提高基站成功解析指定内容的概率，进而提高随机接入的成功率。
可选的，该第二功率调整步长是该终端发送随机接入消息的最大发送功率与首次发送该指定内容的发送功率之差后，除以该第二重传次数。
在本公开实施例中，由于指定内容的重传次数上限(即上述第二重传次数)是单独设置的，因此，也需要为指定内容的功率调整步长做单独配置。例如，终端可以获取本次随机接入过程中，首次发送指定内容的发送功率，并将该终 端发送随机接入消息的最大发送功率减去首次发送指定内容的发送功率后，除以上述第二重传次数，即为对指定内容的发送功率进行调整的第二功率调整步长，这样当指定内容的重传次数达到第二重传次数时，其发送功率也到达终端发送随机接入消息的最大发送功率，从而实现对指定内容的发送功率的合理调整，在保证指定内容的发送效果的情况下，避免功率浪费。
在步骤304中，若在该第一指定时长内未接收到该基站返回的第二随机接入消息，且该第一随机接入消息的重传次数未达到第一重传次数，则向该基站重复发送该第一随机接入消息。
在本公开实施例中，若基站未接收到第一随机接入消息(例如MsgA)的PRACH，则不会向终端反馈任何形式的MsgB消息，因此，当终端在发送MsgA之后，若在第一指定时长内未接收到基站返回的MsgB，则认为基站未能成功接收到前导序列，此时，如果MsgA的发送次数尚未达到上述第一重传次数，则终端可以对完整的MsgA进行重传。
可选的，在向该基站重复发送该第一随机接入消息时，终端可以执行如下步骤：
获取该第一随机接入消息的第一功率调整步长；
根据该第一功率调整步长对上一次发送该第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率；
根据该调整后的第一发送功率向该基站重复发送该第一随机接入消息。
在本公开实施例中，终端在确定基站未能成功接收到第一随机接入消息中的前导序列时，若该第一随机接入消息的重传次数尚未达到第一重传次数，则终端在重复发送该第一随机接入消息时，可以按照一定的步长调整第一随机接入消息的发送功率。
可选的，在根据该第一功率调整步长对上一次发送该第一随机接入消息的第一发送功率进行调整时，终端可以在该上一次发送该第一随机接入消息的第一发送功率的基础上加上该第一功率调整步长，获得该调整后的第一发送功率。
在本公开实施例中，终端调整第一随机接入消息的发送功率时，可以按照上述第一功率调整步长增加第一随机接入消息的发送功率，以提高基站成功解析第一随机接入消息的概率，进而提高随机接入的成功率。
可选的，该第一功率调整步长是该终端发送随机接入消息的最大发送功率与首次发送该第一随机接入消息的发送功率之差后，除以该第一重传次数。
在本公开实施例中，由于第一随机接入消息的重传次数上限(即上述第一重传次数)是单独设置的，因此，也需要为第一随机接入消息的功率调整步长做单独配置。例如，终端可以获取本次随机接入过程中，首次发送第一随机接入消息的发送功率，并将该终端发送随机接入消息的最大发送功率减去首次发送第一随机接入消息的发送功率后，除以上述第一重传次数，即为对第一随机接入消息的发送功率进行调整的第一功率调整步长，这样当第一随机接入消息的重传次数达到第一重传次数时，其发送功率也到达终端发送随机接入消息的最大发送功率，从而实现对第一随机接入消息的发送功率的合理调整，在保证第一随机接入消息的发送效果的情况下，避免功率浪费。
在一个示例性的方案中，基站可以预先通过RRC信令或者广播信令，对UE发送的各种类型的随机接入消息分别配置重传的计数器，例如，对MsgA(包含PRACH以及PUSCH)配置的重传计数器的计数上限(对应上述第一重传次数)为数值A，对MsgA中在PUSCH上发送的指定内容配置的重传计数器的计数上限(对应上述第二重传次数)为数值B，通常情况下，数值A小于数值B。
此外，UE中配置的，MsgA的PRACH的重传计数器的计数上限可以等于数值A或者等于数值B，其可以预定义或者由基站配置。
UE根据判定条件和基站配置决定发起两步随机接入后，即发送完整的MsgA(包含PRACH以及PUSCH)，如果没有收到任何基站的反馈，则UE重发MsgA，直到基站反馈，或者，直到重传次数达到数值A后停止。
如果UE某次发送了MsgA后收到基站的反馈，且基站反馈的是Msg2类型的MsgB，则UE理解为基站成功接收到MsgA的PRACH，但是未能成功解析出MsgA的PUSCH上的内容。此时，UE可以选择单独发送MsgA在PUSCH上的内容，直到基站反馈MsgB，或者，在对MsgA在PUSCH上的内容的重传次数达到数值B后停止。
基于上述不同的随机接入消息的重传计数器的数值上限，UE分别对不同的随机接入消息设置功率调整步长。
例如，对于第一随机接入消息的PRACH，当其重传次数上限为A时，其功率调整步长＝(P max-首次PRACH发射功率)/A；对于MsgA，其功率调整步长＝(P max-首次MsgA发射功率)/A；对于MsgA在PUSCH上的内容，其功率调整步长＝(P max-首次PUSCH发射功率)/B。
综上所述，本公开实施例所示的方案，终端在发起两步随机接入的过程中， 分别通过不同的重发配置来发送第一随机接入消息以及第一随机接入消息在PUSCH中的指定内容，从而实现对两步随机接入过程这种不同消息内容的发送优化，提高系统的资源利用率。
此外，本公开实施例所示的方案，终端中预先对不同类型的随机接入消息(包括完整的MsgA、MsgA在PUSCH上的指定内容、MsgA的PRACH)分别设置重传次数，从而实现对随机接入过程中的消息重传的优化，提高系统性能。
另外，本公开实施例所示的方案，还针对不同类型的随机接入消息的重传次数上限，分别设置不同类型的随机接入消息的发送功率的调整步长，从而实现对随机接入过程中的功率控制的优化。
下述为本公开装置实施例，可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节，请参照本公开方法实施例。
图4是本公开实施例提供的一种随机接入消息发送装置的框图，如图4所示，该随机接入消息发送装置可以通过硬件或者软硬结合的方式实现为图1所示无线通信系统中的终端的全部或者部分，以执行图2或图3任一所示实施例中由终端执行的步骤。该随机接入消息发送装置可以包括：
第一发送模块401，用于在两步随机接入过程中，按照第一重传配置发送第一随机接入消息，所述第一随机接入消息包括物理随机接入信道PRACH以及物理上行共享信道PUSCH；
第二发送模块402，用于当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，所述指定内容是所述第一随机接入消息在PUSCH中的内容；
其中，所述第一重传配置不同于所述第二重传配置。
可选的，所述第一重传配置中包含所述第一随机接入消息对应的第一重传次数，
所述第一发送模块401，用于当上一次发送所述第一随机接入消息之后的第一指定时长内未接收到基站返回的第二随机接入消息，且所述第一随机消息的重传次数未达到所述第一重传次数时，向所述基站重复发送所述第一随机接入消息。
可选的，所述第一发送模块401，包括：
第一步长获取子模块，用于获取所述第一随机接入消息的第一功率调整步 长；
第一功率调整子模块，用于根据所述第一功率调整步长对上一次发送所述第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率；
第一发送子模块，用于根据所述调整后的第一发送功率向所述基站重复发送所述第一随机接入消息。
可选的，所述第一功率调整子模块，用于在所述上一次发送所述第一随机接入消息的第一发送功率的基础上加上所述第一功率调整步长，获得所述调整后的第二发送功率。
可选的，所述第一功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述第一随机接入消息的发送功率之差后，除以所述第一重传次数。
可选的，所述第二发送模块402，用于当上一次发送所述第一随机接入消息之后的所述第一指定时长内接收到所述基站返回的指定类型的第二随机接入消息时，按照所述第二重传配置发送所述指定内容；
其中，所述指定类型的第二随机接入消息是所述基站在成功接收到所述第一随机接入消息的PRACH，且解析所述第一随机接入消息在PUSCH中的内容失败时返回的消息。
可选的，所述第二重传配置中包含所述指定内容对应的第二重传次数，所述第二重传次数不同于所述第一重传次数；
所述第二发送模块402，用于当上一次发送所述指定内容之后的第二指定时长内未接收到所述基站返回的第二随机接入消息，且所述指定内容的重传次数未达到所述第二重传次数时，向所述基站重复发送所述指定内容。
可选的，所述二发送模块402，包括：
第二步长获取子模块，用于获取所述指定内容的第二功率调整步长；
第二功率调整子模块，用于根据所述第二功率调整步长对上一次发送所述指定内容的第二发送功率进行调整，获得调整后的第二发送功率；
第二发送子模块，用于根据所述调整后的第二发送功率向所述基站重传所述指定内容。
可选的，所述第二功率调整子模块，用于在所述上一次发送所述指定内容的第二发送功率的基础上加上所述第二功率调整步长，获得所述调整后的第二发送功率。
可选的，所述第二功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述指定内容的发送功率之差后，除以所述第二重传次数。
可选的，所述第一重传次数小于所述第二重传次数。
综上所述，本公开实施例所示的方案，终端在发起两步随机接入的过程中，分别通过不同的重发配置来发送第一随机接入消息以及第一随机接入消息在PUSCH中的指定内容，从而实现对两步随机接入过程这种不同消息内容的发送优化，提高系统的资源利用率。
此外，本公开实施例所示的方案，终端中预先对不同类型的随机接入消息(包括完整的MsgA、MsgA在PUSCH上的指定内容、MsgA的PRACH)分别设置重传次数，从而实现对随机接入过程中的消息重传的优化，提高系统性能。
另外，本公开实施例所示的方案，还针对不同类型的随机接入消息的重传次数上限，分别设置不同类型的随机接入消息的发送功率的调整步长，从而实现对随机接入过程中的功率控制的优化。
需要说明的一点是，上述实施例提供的装置在实现其功能时，仅以上述各个功能模块的划分进行举例说明，实际应用中，可以根据实际需要而将上述功能分配由不同的功能模块完成，即将设备的内容结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
本公开一示例性实施例提供了一种随机接入消息发送装置，能够实现本公开上述图2或图3所示实施例中由终端执行的全部或者部分步骤，该随机接入消息发送装置包括：处理器、用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
在两步随机接入过程中，按照第一重传配置发送第一随机接入消息，所述第一随机接入消息包括物理随机接入信道PRACH以及物理上行共享信道PUSCH；
当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，所述指定内容是所述第一随机接入消息在PUSCH中的内容；
其中，所述第一重传配置不同于所述第二重传配置。
可选的，所述第一重传配置中包含所述第一随机接入消息对应的第一重传次数，所述按照第一重传配置发送第一随机接入消息，包括：
当上一次发送所述第一随机接入消息之后的第一指定时长内未接收到基站返回的第二随机接入消息，且所述第一随机消息的重传次数未达到所述第一重传次数时，向所述基站重复发送所述第一随机接入消息。
可选的，所述向所述基站重复发送所述第一随机接入消息，包括：
获取所述第一随机接入消息的第一功率调整步长；
根据所述第一功率调整步长对上一次发送所述第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率；
根据所述调整后的第一发送功率向所述基站重复发送所述第一随机接入消息。
可选的，所述根据所述第一功率调整步长对上一次发送所述第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率，包括：
在所述上一次发送所述第一随机接入消息的第一发送功率的基础上加上所述第一功率调整步长，获得所述调整后的第二发送功率。
可选的，所述第一功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述第一随机接入消息的发送功率之差后，除以所述第一重传次数。
可选的，所述当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，包括：
当上一次发送所述第一随机接入消息之后的所述第一指定时长内接收到所述基站返回的指定类型的第二随机接入消息时，按照所述第二重传配置发送所述指定内容；
其中，所述指定类型的第二随机接入消息是所述基站在成功接收到所述第一随机接入消息的PRACH，且解析所述第一随机接入消息在PUSCH中的内容失败时返回的消息。
可选的，所述第二重传配置中包含所述指定内容对应的第二重传次数，所述第二重传次数不同于所述第一重传次数；
所述按照所述第二重传配置发送所述指定内容，包括：
当上一次发送所述指定内容之后的第二指定时长内未接收到所述基站返回的第二随机接入消息，且所述指定内容的重传次数未达到所述第二重传次数时， 向所述基站重复发送所述指定内容。
可选的，所述向所述基站重复发送所述指定内容，包括：
获取所述指定内容的第二功率调整步长；
根据所述第二功率调整步长对上一次发送所述指定内容的第二发送功率进行调整，获得调整后的第二发送功率；
根据所述调整后的第二发送功率向所述基站重传所述指定内容。
可选的，所述根据所述第二功率调整步长对上一次发送所述指定内容的第二发送功率进行调整，获得调整后的第二发送功率，包括：
在所述上一次发送所述指定内容的第二发送功率的基础上加上所述第二功率调整步长，获得所述调整后的第二发送功率。
可选的，所述第二功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述指定内容的发送功率之差后，除以所述第二重传次数。
可选的，所述第一重传次数小于所述第二重传次数。
综上所述，本公开实施例所示的方案，终端在发起两步随机接入的过程中，分别通过不同的重发配置来发送第一随机接入消息以及第一随机接入消息在PUSCH中的指定内容，从而实现对两步随机接入过程这种不同消息内容的发送优化，提高系统的资源利用率。
此外，本公开实施例所示的方案，终端中预先对不同类型的随机接入消息(包括完整的MsgA、MsgA在PUSCH上的指定内容、MsgA的PRACH)分别设置重传次数，从而实现对随机接入过程中的消息重传的优化，提高系统性能。
另外，本公开实施例所示的方案，还针对不同类型的随机接入消息的重传次数上限，分别设置不同类型的随机接入消息的发送功率的调整步长，从而实现对随机接入过程中的功率控制的优化。
上述主要以终端和基站为例，对本公开实施例提供的方案进行了介绍。可以理解的是，终端和基站为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。结合本公开中所公开的实施例描述的各示例的模块及算法步骤，本公开实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同的方法来实现所描述的功能，但是这种实现不应认为超出本公开实施例的技术 方案的范围。
图5是本公开实施例提供的一种终端的结构示意图。如图5所示：
终端500包括通信单元504和处理器502。其中，处理器502也可以为控制器，图5中表示为“控制器/处理器502”。通信单元504用于支持终端与其它网络设备(例如基站等)进行通信。
进一步的，终端500还可以包括存储器503，存储器503用于存储终端500的程序代码和数据。
可以理解的是，图5仅仅示出了终端500的简化设计。在实际应用中，终端500可以包含任意数量的处理器，控制器，存储器，通信单元等，而所有可以实现本公开实施例的终端都在本公开实施例的保护范围之内。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本公开实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
本公开实施例还提供了一种计算机存储介质，用于储存为上述终端所用的计算机软件指令，其包含用于执行上述随机接入消息发送方法所设计的程序。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (24)

  1. 一种随机接入消息发送方法，其特征在于，所述方法由终端执行，所述方法包括：
    在两步随机接入过程中，按照第一重传配置发送第一随机接入消息，所述第一随机接入消息包括物理随机接入信道PRACH以及物理上行共享信道PUSCH；
    当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，所述指定内容是所述第一随机接入消息在PUSCH中的内容；
    其中，所述第一重传配置不同于所述第二重传配置。
  2. 根据权利要求1所述的方法，其特征在于，所述第一重传配置中包含所述第一随机接入消息对应的第一重传次数，所述按照第一重传配置发送第一随机接入消息，包括：
    当上一次发送所述第一随机接入消息之后的第一指定时长内未接收到基站返回的第二随机接入消息，且所述第一随机消息的重传次数未达到所述第一重传次数时，向所述基站重复发送所述第一随机接入消息。
  3. 根据权利要求2所述的方法，其特征在于，所述向所述基站重复发送所述第一随机接入消息，包括：
    获取所述第一随机接入消息的第一功率调整步长；
    根据所述第一功率调整步长对上一次发送所述第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率；
    根据所述调整后的第一发送功率向所述基站重复发送所述第一随机接入消息。
  4. 根据权利要求3所述的方法，其特征在于，所述根据所述第一功率调整步长对上一次发送所述第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率，包括：
    在所述上一次发送所述第一随机接入消息的第一发送功率的基础上加上所述第一功率调整步长，获得所述调整后的第二发送功率。
  5. 根据权利要求3所述的方法，其特征在于，
    所述第一功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述第一随机接入消息的发送功率之差后，除以所述第一重传次数。
  6. 根据权利要求2所述的方法，其特征在于，所述当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，包括：
    当上一次发送所述第一随机接入消息之后的所述第一指定时长内接收到所述基站返回的指定类型的第二随机接入消息时，按照所述第二重传配置发送所述指定内容；
    其中，所述指定类型的第二随机接入消息是所述基站在成功接收到所述第一随机接入消息的PRACH，且解析所述第一随机接入消息在PUSCH中的内容失败时返回的消息。
  7. 根据权利要求6所述的方法，其特征在于，所述第二重传配置中包含所述指定内容对应的第二重传次数，所述第二重传次数不同于所述第一重传次数；
    所述按照所述第二重传配置发送所述指定内容，包括：
    当上一次发送所述指定内容之后的第二指定时长内未接收到所述基站返回的第二随机接入消息，且所述指定内容的重传次数未达到所述第二重传次数时，向所述基站重复发送所述指定内容。
  8. 根据权利要求7所述的方法，其特征在于，所述向所述基站重复发送所述指定内容，包括：
    获取所述指定内容的第二功率调整步长；
    根据所述第二功率调整步长对上一次发送所述指定内容的第二发送功率进行调整，获得调整后的第二发送功率；
    根据所述调整后的第二发送功率向所述基站重传所述指定内容。
  9. 根据权利要求8所述的方法，其特征在于，所述根据所述第二功率调整步长对上一次发送所述指定内容的第二发送功率进行调整，获得调整后的第二 发送功率，包括：
    在所述上一次发送所述指定内容的第二发送功率的基础上加上所述第二功率调整步长，获得所述调整后的第二发送功率。
  10. 根据权利要求8所述的方法，其特征在于，所述第二功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述指定内容的发送功率之差后，除以所述第二重传次数。
  11. 根据权利要求7所述的方法，其特征在于，所述第一重传次数小于所述第二重传次数。
  12. 一种随机接入消息发送装置，其特征在于，所述装置用于终端中，所述装置包括：
    第一发送模块，用于在两步随机接入过程中，按照第一重传配置发送第一随机接入消息，所述第一随机接入消息包括物理随机接入信道PRACH以及物理上行共享信道PUSCH；
    第二发送模块，用于当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，所述指定内容是所述第一随机接入消息在PUSCH中的内容；
    其中，所述第一重传配置不同于所述第二重传配置。
  13. 根据权利要求12所述的装置，其特征在于，所述第一重传配置中包含所述第一随机接入消息对应的第一重传次数，
    所述第一发送模块，用于当上一次发送所述第一随机接入消息之后的第一指定时长内未接收到基站返回的第二随机接入消息，且所述第一随机消息的重传次数未达到所述第一重传次数时，向所述基站重复发送所述第一随机接入消息。
  14. 根据权利要求13所述的装置，其特征在于，所述第一发送模块，包括：
    第一步长获取子模块，用于获取所述第一随机接入消息的第一功率调整步长；
    第一功率调整子模块，用于根据所述第一功率调整步长对上一次发送所述第一随机接入消息的第一发送功率进行调整，获得调整后的第一发送功率；
    第一发送子模块，用于根据所述调整后的第一发送功率向所述基站重复发送所述第一随机接入消息。
  15. 根据权利要求14所述的装置，其特征在于，
    所述第一功率调整子模块，用于在所述上一次发送所述第一随机接入消息的第一发送功率的基础上加上所述第一功率调整步长，获得所述调整后的第二发送功率。
  16. 根据权利要求14所述的装置，其特征在于，
    所述第一功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述第一随机接入消息的发送功率之差后，除以所述第一重传次数。
  17. 根据权利要求13所述的装置，其特征在于，
    所述第二发送模块，用于当上一次发送所述第一随机接入消息之后的所述第一指定时长内接收到所述基站返回的指定类型的第二随机接入消息时，按照所述第二重传配置发送所述指定内容；
    其中，所述指定类型的第二随机接入消息是所述基站在成功接收到所述第一随机接入消息的PRACH，且解析所述第一随机接入消息在PUSCH中的内容失败时返回的消息。
  18. 根据权利要求17所述的装置，其特征在于，所述第二重传配置中包含所述指定内容对应的第二重传次数，所述第二重传次数不同于所述第一重传次数；
    所述第二发送模块，用于当上一次发送所述指定内容之后的第二指定时长内未接收到所述基站返回的第二随机接入消息，且所述指定内容的重传次数未达到所述第二重传次数时，向所述基站重复发送所述指定内容。
  19. 根据权利要求18所述的装置，其特征在于，所述二发送模块，包括：
    第二步长获取子模块，用于获取所述指定内容的第二功率调整步长；
    第二功率调整子模块，用于根据所述第二功率调整步长对上一次发送所述指定内容的第二发送功率进行调整，获得调整后的第二发送功率；
    第二发送子模块，用于根据所述调整后的第二发送功率向所述基站重传所述指定内容。
  20. 根据权利要求19所述的中装置，其特征在于，
    所述第二功率调整子模块，用于在所述上一次发送所述指定内容的第二发送功率的基础上加上所述第二功率调整步长，获得所述调整后的第二发送功率。
  21. 根据权利要求19所述的装置，其特征在于，
    所述第二功率调整步长是所述终端发送随机接入消息的最大发送功率与首次发送所述指定内容的发送功率之差后，除以所述第二重传次数。
  22. 根据权利要求18所述的装置，其特征在于，所述第一重传次数小于所述第二重传次数。
  23. 一种随机接入消息发送装置，其特征在于，所述装置用于终端中，所述装置包括：
    处理器；
    用于存储所述处理器的可执行指令的存储器；
    其中，所述处理器被配置为：
    在两步随机接入过程中，按照第一重传配置发送第一随机接入消息，所述第一随机接入消息包括物理随机接入信道PRACH以及物理上行共享信道PUSCH；
    当满足发送指定内容的条件时，按照第二重传配置发送所述指定内容，所述指定内容是所述第一随机接入消息在PUSCH中的内容；
    其中，所述第一重传配置不同于所述第二重传配置。
  24. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中 包含可执行指令，基站中的处理器调用所述可执行指令以实现上述权利要求1至11任一所述的随机接入消息发送方法。
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