WO2022002092A1 - Procédé de transmission pour des informations d'accès aléatoire, terminal et dispositif côté réseau - Google Patents

Procédé de transmission pour des informations d'accès aléatoire, terminal et dispositif côté réseau Download PDF

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Publication number
WO2022002092A1
WO2022002092A1 PCT/CN2021/103338 CN2021103338W WO2022002092A1 WO 2022002092 A1 WO2022002092 A1 WO 2022002092A1 CN 2021103338 W CN2021103338 W CN 2021103338W WO 2022002092 A1 WO2022002092 A1 WO 2022002092A1
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WIPO (PCT)
Prior art keywords
random access
terminal
information
attempt
type
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PCT/CN2021/103338
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English (en)
Chinese (zh)
Inventor
范江胜
王睿炜
刘爱娟
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大唐移动通信设备有限公司
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Publication of WO2022002092A1 publication Critical patent/WO2022002092A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • 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
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • 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

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a method for transmitting random access information, a terminal, and a network side device.
  • a random access process may include multiple random access attempts, and the type distribution of multiple random access attempts includes various situations, such as:
  • Scenario 1A All random access attempts included in a random access process are 2-step RACH, and there is no fallback for each two-step random access attempt (that is, fallback from two-step random access attempts to four-step random access attempts random access attempt) condition;
  • Scenario 1B All random access attempts included in a random access process are 2-step RACH, and there is at least one fallback in two-step random access attempts;
  • Scenario 2 All random access attempts included in a random access process are 4-step RACH;
  • Scenario 3A The first part of all random access attempts included in a random access process is 2-step RACH, and there is no fallback in each two-step random access attempt, and the remaining random access attempts
  • the attempt types are all 4-step RACH and the frequency resource information used by 2-step RACH and 4-step RACH is the same;
  • Scenario 3B The first part of all random access attempts included in a random access process are all 2-step RACH, and there is no fallback in each two-step random access attempt, and the remaining random access attempts
  • the attempt types are both 4-step RACH and the frequency resource information used by 2-step RACH and 4-step RACH is different;
  • Scenario 3C Among all random access attempts included in a random access process, the first part of the random access attempts are of 2-step RACH type, and there is at least one two-step random access attempt with fallback.
  • the attempt types are all 4-step RACH and the frequency resource information used by 2-step RACH and 4-step RACH is the same;
  • Scenario 3D The first part of all random access attempts included in a random access process are of 2-step RACH type, and there is at least one two-step random access attempt with fallback.
  • the attempt types are both 4-step RACH and 2-step RACH and 4-step RACH use different frequency resource information.
  • the random access record information reported by the terminal cannot distinguish the types of each random access attempt.
  • Embodiments of the present disclosure provide a method for transmitting random access information, a terminal, and a network-side device, so as to solve the problem in the prior art that the network-side device cannot distinguish the types of each random access attempt.
  • An embodiment of the present disclosure provides a method for transmitting random access information, which is applied to a terminal, including:
  • the feature-related information of the random access type used by the terminal for a random access attempt in a random access process of the terminal to the network-side device, where the feature-related information is used to indicate that the terminal performs each random access process in the random access process.
  • the random access type characteristic associated with the random access attempt is used to indicate that the terminal performs each random access process in the random access process.
  • An embodiment of the present disclosure provides a method for transmitting random access information, which is applied to a network side device, including:
  • the random access type characteristic associated with each random access attempt of the terminal in this random access process is determined according to the characteristic-related information of the random access type.
  • An embodiment of the present disclosure provides a device for transmitting random access information, which is applied to a terminal and includes:
  • a reporting module configured to report the feature-related information of the random access type used in a random access attempt of the terminal in a random access process of the terminal to the network side device, wherein the feature-related information is used to indicate that the terminal is in this random access process.
  • the random access type feature associated with each random access attempt during the entry process.
  • An embodiment of the present disclosure provides a device for transmitting random access information, which is applied to network-side equipment, including:
  • a receiving module configured to receive the feature-related information of the random access type used in a random access attempt of the terminal in a random access process reported by the terminal, wherein the feature-related information is used to indicate that the terminal is in this random access
  • the random access type feature associated with each random access attempt in the process
  • a determining module configured to determine the random access type characteristic associated with each random access attempt of the terminal in the random access process according to the characteristic-related information of the random access type.
  • An embodiment of the present disclosure provides a terminal, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the transmission of random access information applied to the terminal when the processor executes the program steps of the method.
  • An embodiment of the present disclosure provides a network-side device, including a memory, a processor, and a computer program stored in the memory and running on the processor.
  • the processor executes the program, the processor implements random access applied to the network-side device. The steps of the transmission method of incoming information.
  • Embodiments of the present disclosure provide a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of the method for transmitting random access information.
  • the terminal reports the characteristic-related information of the random access type used in the random access attempt of the terminal in a random access process to the network-side device, This enables the network-side device to clearly identify the random access type feature associated with each random access attempt of the terminal in the random access process, so that the network-side device can perform optimization operations for different types of random access configuration resources. , so that different types of random access configurations can be better applied to application scenarios associated with different random access types.
  • FIG. 1 is a flowchart of steps of a method for transmitting random access information applied to a terminal in an embodiment of the present disclosure
  • FIG. 2 is a flowchart of steps of a method for transmitting random access information applied to a network side device in an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of a reporting process of feature-related information of a random access type in the first embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a reporting process of feature-related information of a random access type in a second embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a reporting process of feature-related information of a random access type in a third embodiment of the present disclosure
  • FIG. 6 is one of the schematic diagrams of the reporting process of the feature-related information of the random access type in the fourth embodiment of the present disclosure.
  • FIG. 7 is the second schematic diagram of the reporting process of the feature-related information of the random access type in the fourth embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a reporting process of feature-related information of a random access type in a fifth embodiment of the present disclosure.
  • FIG. 9 is a block diagram of a module of an apparatus for transmitting random access information applied to a terminal in an embodiment of the present disclosure.
  • FIG. 10 is a block diagram of a module of an apparatus for transmitting random access information applied to a network side device in an embodiment of the present disclosure
  • FIG. 11 is a schematic structural diagram of a terminal in an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a network side device in an embodiment of the disclosure.
  • the term "and/or" describes the association relationship of associated objects, and indicates that there can be three kinds of relationships. For example, A and/or B can indicate that A exists alone, A and B exist at the same time, and B exists alone these three situations.
  • the characters "three generally indicate that the associated objects are an "or" relationship.
  • the term “plurality” refers to two or more than two, and other quantifiers are similar.
  • the terminal In a 2-step random access non-Fallback (no fallback to four-step random access attempt) scenario, the terminal first selects 2-step RACH as the RACH attempt type and sends MSG A to the network side, and then the terminal receives MSG B at MSG B In the window, the MSGB message sent by the network side that does not contain the indication information of falling back to the four-step random access is received. At this time, once the terminal receives the MSGB successfully, it indicates that the 2-step RACH attempt is successful. If the MSGB cannot be successfully received at the end of the window, it means that the 2-step RACH attempt failed.
  • the terminal first selects 2-step RACH as the RACH attempt type and sends MSG A to the network side, and then the terminal receives the information sent by the network side in the MSG B receiving window, including falling back to four steps. MSGB message of random access indication information, and then the terminal sends MSG 3 on the resource indicated by MSGB B, and finally the terminal receives MSG 4 sent by the network side in the contention resolution window.
  • the terminal once the terminal receives MSG 4 successfully, it indicates that The 2-step RACH fallback attempt is successful. If the terminal cannot successfully receive MSG 4 until the end of the MSG 4 receiving window, it means that the 2-step RACH fallback attempt failed.
  • the terminal first selects 4-step RACH as the RACH attempt type and sends MSG 1 to the network side, then the terminal receives the MSG 2 message sent by the network side in the MSG 2 receiving window, and then the terminal Send MSG 3 on the resource indicated by MSG 2, and finally the terminal receives MSG 4 sent by the network side in the contention resolution window.
  • the terminal once the terminal receives MSG 4 successfully, it indicates that the 4-step RACH attempt is successful. 4 If the MSG 4 cannot be successfully received at the end of the receiving window, it means that the 4-step RACH attempt failed.
  • the existing random access record information reported by the terminal exists in the random access report (RACH Report) or the radio link failure (Radio Link Failure, RLF) report, and may specifically include the following information: During the random access process Information about the RACH frequency resources used, the reason value information for the initiation of the random access process, the synchronization signal block (Synchronization Signal Block, SSB) involved in the random access process/channel state information-reference signal (Channel state information) -RS) index and the information on the number of random access attempts sent in the SSB/CSI-RS index, whether the signal quality of the cell is higher than the SSB threshold in each random access attempt in this random access process, and the indication information of this time Indication information of whether a competing random access process is detected during the random access attempt.
  • SSB Synchronation Signal Block
  • Channel state information-RS Channel state information-reference signal
  • the terminal may record multiple sets of random access procedure record information, and each set of recorded information includes the above four types of information.
  • the random access record information reported by the above terminal cannot reflect the unique technical features of 2-step RACH and the possible fallback interaction information between 2-step RACH and 4-step RACH. Even if the network side obtains the recorded random access information from the terminal side The incoming record information cannot be optimized relatively independently for specific random access types, that is, it is not known which data to use to optimize 2-step RACH and which data to optimize 4-step RACH.
  • the present disclosure provides the following embodiments, so that the network side can clearly identify whether the random access attempt type initiated by the terminal is 2-step RACH related or 4-step RACH related or related to 2-step RACH and 4-step RACH at the same time.
  • step RACH related ie fallback scenario.
  • FIG. 1 it is a flowchart of steps of a method for transmitting random access information applied to a terminal in an embodiment of the present disclosure, and the method includes the following steps:
  • Step 101 report the feature-related information of the random access type used in the random access attempt of the terminal in one random access process of the terminal to the network side device.
  • the terminal reports the feature-related information of the random access type used in the random access attempt in the random access process to the network side device.
  • the feature-related information is used to indicate the random access type feature associated with each random access attempt of the terminal in the random access process, so that the network-side device can use the feature-related information of the random access type reported by the terminal. Determine the random access type feature associated with each random access attempt of the terminal in the random access process.
  • the random access type may be two-step random access, four-step random access, or two-step random access falling back to four-step random access.
  • the terminal reports the feature-related information of the random access type used by the random access attempt of the terminal in a random access process to the network side device, so that the network side device can determine that the terminal randomly accesses each random access process in the random access process.
  • the random access type feature associated with the access attempt so that the network side device can clearly identify that the random access type used by the terminal for each random access attempt in this random access process is two-step random access, four-step random access One-step random access or fallback from two-step random access to four-step random access, so that network-side devices can perform optimal operations for different types of random access configuration resources, thereby enabling different types of random access configurations to be more efficient. Good for application scenarios associated with different random access types.
  • the feature-related information of the random access type includes at least one or more of the following information:
  • the terminal reports whether only two-step random access resources are configured on the network side during the random access process of the terminal, so that the network-side device can clearly know whether the terminal can only use two-step random access resources during this random access process.
  • the random access type is used to attempt access, so that random access optimization can be performed with reference to the information and random access conditions.
  • the terminal reports whether the network side has enabled the conversion function of two-step random access to four-step random access during the random access process of the terminal, so that the network side device can know whether the terminal can use the fallback function to try to connect. access, so that the network side device can refer to the information to perform random access optimization.
  • the terminal reports the above (1) and (2), so that the network side device can clearly know the reason why the terminal uses the two-step random access type to complete the random access process.
  • the reason may be four
  • the one-step random access resource is not configured, or the four-step random access resource is configured, but the conversion function from two-step random access to four-step random access is not enabled, or the four-step random access resource is configured and the two-step random access function is not enabled.
  • the conversion function from one-step random access to four-step random access is enabled, but the two-step random access type is selected to complete the random access process due to the signal quality of the initial cell.
  • the network side device can optimize the resource configuration of random access by these reasons, such as adding four-step random access resource configuration and/or the conversion function of two-step random access to four-step random access , instead of only optimizing the resource configuration corresponding to the two-step random access, thereby realizing the efficient optimization of random and subsequent resource configuration.
  • the terminal reports the random access frequency resource information used in the random access process, so that the network side device can clearly know the frequency used for the two-step random access and/or the four-step random access attempt. resource information, so that the network-side device can determine the frequency resource information to be optimized and perform optimization.
  • the terminal may report the recorded threshold of the maximum number of transmissions of the random access message msgA before the type of the two-step random access attempt is converted to the four-step random access attempt type to the network side device , so that the network-side device can know the maximum number of random access attempts in the first two-step random access attempt before switching to the four-step random access attempt in this random access process, so that the network-side device can use the record and the access situation.
  • the maximum number of transfers threshold is optimized.
  • the preset recording conditions may include:
  • the network-side device has been configured with a threshold for the maximum number of msgA transmissions before switching from a two-step random access attempt to a four-step random access attempt;
  • the network-side device has been configured with resources related to the two-step random access type and the four-step random access type; and,
  • the value of the transmission times counter of the random access preamble recorded by the terminal is the sum of the msgA maximum transmission times threshold and 1, and the value sent by the last random access attempt in the past
  • the random access message is msgA; or, the value of the transmission times counter of the random access preamble recorded by the terminal is the sum of the msgA maximum transmission times threshold and 1, and the last (last) random access attempt failed and random access
  • the random access message sent when the access attempt fails is msgA.
  • the terminal when the terminal detects that the synchronization meets the above conditions, it can record the threshold of the maximum transmission times of the random access message msgA before switching from the two-step random access attempt type to the four-step random access attempt type, thereby ensuring the validity of the record.
  • the terminal enables the network-side device to clearly know how many times the terminal has used two-step random access attempts or four-step random access attempts in the random access process, thereby enabling the network-side device to Use the corresponding random access attempt record to optimize the random access resource of the corresponding type.
  • each two-step random access attempt may use 1 bit to indicate whether the current two-step random access attempt involves a fallback from the two-step random access attempt to the four-step random access attempt try (fallback function).
  • the terminal reports whether there is a fallback scenario every time a random access attempt is performed using the two-step random access type, so that the network side device can clearly know whether there is a fallback situation for each two-step random access attempt, Further, the network side device can refer to this information to perform random access optimization.
  • the two-step random access type is used each time for random access attempts and the cell signal quality when backoff occurs.
  • the terminal reports the signal quality of the cell when a random access attempt is performed using the two-step random access type and a fallback occurs each time, so that the network-side device can clearly know that a fallback occurs every time the two-step random access attempt is used. Whether the reason is related to the signal quality of the cell, so that the network-side device can know the details of each two-step random access attempt, so that the network-side device can refer to this information to optimize random access.
  • the terminal reports whether the signal quality of the associated SSB is higher than the preset quality threshold each time a random access attempt is performed using the two-step random access type, so that the network-side device can clearly know that the two-step random access type is used each time.
  • the signal quality of the SSB associated with the random access attempt so that the network-side device can know the details of each two-step random access attempt, so that the network-side device can refer to this information for random access optimization.
  • the network-side device can clearly know the details of each two-step random access attempt, and then can refer to these information to optimize When to activate the fallback function to improve the success rate of this random access.
  • each four-step random access attempt may use 1 bit to indicate the current random access attempt and the reason for the first failure cause of the failed attempt.
  • the first failure reason may include: when the random access response window times out, the terminal does not receive msg2 including the random access code index (PREAMBLE_INDEX) used by the terminal for this random access attempt; or, random access The competition failed.
  • PREAMBLE_INDEX the random access code index
  • the reason why the random access contention fails to be successfully resolved may be that the random access contention resolution timer (ra-ContentionResolutionTimer) has timed out, or the terminal has demodulated the temporary cell radio network temporary identifier (C-RNTI).
  • the terminal reports the first failure reason for each random access attempt using the four-step random access type and the attempt fails, so that the network-side device can clearly know the reason for each four-step random access attempt and the attempt fails, and then This enables the network side device to perform random access optimization with reference to this information.
  • each two-step random access attempt may use 1 bit to indicate the second failure reason of the current random access attempt and the failed attempt.
  • the second failure reason may include: when the random access response window times out, the terminal does not receive the msgB containing the random access code index (PREAMBLE_INDEX) used by the terminal for this random access attempt, or does not receive the use of the terminal The msgB of the PDCCH scrambled by the C-RNTI; or, the random access contention fails.
  • PREAMBLE_INDEX the random access code index
  • the reason why the random access contention fails may be that the random access contention resolution timer has expired, or the terminal has demodulated the PDCCH and MAC PDU scrambled by the temporary C-RNTI, but the content of the MAC PDU The contention resolution identity contained does not match the identity sent by the terminal MSG 3.
  • the terminal reports the second failure reason for each random access attempt using the two-step random access type and the attempt fails, so that the network-side device can clearly know the reason for each two-step random access attempt and the attempt fails, and then This enables the network side device to perform random access optimization with reference to this information.
  • the third failure reason is that the demodulation of the physical downlink control channel (PDCCH for short) is unsuccessful or the demodulation of the physical downlink shared channel (PDSCH for short) is unsuccessful.
  • the terminal reports the third failure reason when the information msg2 or msgB cannot be completely received in each random access attempt, so that the network-side device can clearly know the reason why the msg2 or msgB cannot be completely received, so that the network-side device can Refer to this information for random access optimization.
  • the network-side device can clearly know the details of each random access attempt failure, and then can refer to the information to use different strategies Random access is optimized to improve the success rate of random access.
  • the terminal reports at least one or more of the above information as the feature-related information of the random access type, so that the network side device can clearly know the characteristics of the random access type used in each random access attempt Relevant information, such as frequency resource information, the random access type used for each attempt, the reason for the failure of each attempt, the reason for the fallback of each two-step random access attempt, and the number of access attempts for each random access type, etc. , so that the network-side device can know the random access type used in each random access attempt based on this information, and can use different strategies to optimize different types of random access configuration resources with reference to the information.
  • Relevant information such as frequency resource information, the random access type used for each attempt, the reason for the failure of each attempt, the reason for the fallback of each two-step random access attempt, and the number of access attempts for each random access type, etc.
  • the terminal reports the feature-related information of the random access type used by the terminal in a random access attempt in a random access process of the terminal to the network side device, including any one of the following:
  • connection establishment failure record information or the connection recovery failure record information both include the feature-related information of the random access type
  • the fifth send failure record information to the network side device, wherein the failure record information includes feature-related information of the random access type.
  • the terminal can report the feature information of the random access type by including the feature-related information of the random access type in any of the above record information, and fail to send the record information to the network side, thereby realizing the random access type.
  • the terminal also needs to send a first indication message to the network side device before reporting the feature-related information of the random access type used by the random access attempt of the terminal in a random access process of the terminal to the network side device, wherein the first indication message used to indicate that the network-side device can obtain the feature-related information of the random access type, that is, informing the network-side device that the feature-related information of the random access type can be obtained; and then receiving a second indication message sent by the network-side device based on the first indication message, The second indication message is used to instruct the terminal to report the feature-related information of the random access type.
  • the terminal may correlate the feature including the random access type based on the second indication message.
  • the record of information is reported to the network side device.
  • the terminal before reporting the feature-related information of the random access type, the terminal also needs to inform the network-side device that the record of the feature-related information of the random access type is desirable, and then after receiving the network-side device instructing the terminal to report the feature-related information of the random access type
  • the information about the random access type is not required, the information about the characteristics of the random access type is reported to the terminal, which avoids the waste of transmission resources caused by the terminal reporting the information about the characteristics of the random access type when the equipment on the network side does not need the information about the characteristics of the random access type.
  • the terminal when the terminal sends the first indication message to the network side device, it may include any of the following sending methods:
  • Radio resource control RRC
  • the RRC reestablishment complete message includes a first indication message
  • the Fifth send a terminal information response message (UEInformationResponse) to the network side device, wherein the terminal information response message includes a first indication message.
  • UEInformationResponse terminal information response message
  • the terminal can implement the sending of the first indication message through any of the above-mentioned messages, which realizes the diversity of the sending manner of the first indication message.
  • the terminal in this embodiment reports the feature-related information of the random access type used in the random access attempt of the terminal in a random access process of the terminal to the network side device, so that the network side device can clearly identify that the terminal is in this random access process.
  • the random access type feature associated with each random access attempt in the access process so that the network side device can optimize the operation for different types of random access configuration resources, so that different types of random access configuration can be better It is suitable for application scenarios associated with different random access types.
  • FIG. 2 it is a flowchart of steps of a method for transmitting random access information applied to a network side device in an embodiment of the present disclosure, and the method includes the following steps:
  • Step 201 Receive the feature-related information of the random access type used by the random access attempt in a random access process of the terminal reported by the terminal.
  • the terminal reports the feature-related information of the random access type used in the random access attempt in the random access process to the network side device.
  • the network side device receives the information reported by the terminal.
  • the feature-related information of the random access type used by the random access attempt of the terminal in this random access process is the information reported by the terminal.
  • the feature-related information is used to indicate the random access type feature associated with each random access attempt of the terminal in the random access process.
  • the random access type may be two-step random access, four-step random access, or two-step random access falling back to four-step random access.
  • Step 202 Determine the random access type feature associated with each random access attempt of the terminal in the random access process according to the feature-related information of the random access type.
  • the network-side device may determine, according to the feature-related information of the random access type, the random access associated with each random access attempt of the terminal in the random access process. Access type features, so that the network side device can perform optimal operations for different types of random access configuration resources.
  • the network-side device can learn the information associated with each random access attempt of the terminal in this random access process by receiving the feature-related information of the random access type used in the random access attempt of the terminal in this random access process. and can identify whether the random access type used is two-step random access, four-step random access, or fallback from two-step random access to four-step random access, so that different types of random access can be identified. Random access configuration resources of different types are optimized, so that different types of random access configurations can be better applied to application scenarios associated with different random access types.
  • the feature-related information of the random access type includes at least one or more of the following information:
  • the preset recording conditions may include:
  • the network-side device has been configured with a threshold for the maximum number of msgA transmissions before switching from a two-step random access attempt to a four-step random access attempt;
  • the network-side device has been configured with resources related to the two-step random access type and the four-step random access type; and,
  • the value of the transmission times counter of the random access preamble recorded by the terminal is the sum of the msgA maximum transmission times threshold and 1, and the random access
  • the incoming message is msgA; or, the value of the transmission times counter of the random access preamble recorded by the terminal is the sum of the msgA maximum transmission times threshold and 1, and the last random access attempt in the past failed and the random access attempt failed.
  • the random access message sent is msgA.
  • the two-step random access type is used each time for random access attempts and the cell signal quality when backoff occurs.
  • the first failure reason may include: when the random access response window times out, the terminal does not receive msg2 including the random access code index (PREAMBLE_INDEX) used by the terminal for this random access attempt; or, random access The competition failed.
  • PREAMBLE_INDEX the random access code index
  • the second failure reason may include: when the random access response window times out, the terminal does not receive the msgB containing the random access code index (PREAMBLE_INDEX) used by the terminal for this random access attempt, or does not receive the use of the terminal The msgB of the PDCCH scrambled by the C-RNTI; or, the random access contention fails.
  • PREAMBLE_INDEX the random access code index
  • the third failure reason is that the PDCCH demodulation is unsuccessful or the PDSCH demodulation is unsuccessful.
  • the feature-related information of the random access type used by the random access attempt in a random access process of the terminal in one random access process of the terminal includes any one of the following:
  • connection establishment failure record information or the connection recovery failure record information sent by the terminal wherein the connection establishment failure record information and the connection recovery failure record information both contain the feature-related information of the random access type;
  • the random access success record information includes feature-related information of the random access type
  • MCG failure record information MCG failure report
  • SCG failure record information SCG failure report
  • the failure record information (Failure Information) sent by the terminal is received, wherein the failure record information includes feature-related information of the random access type.
  • the method of reporting random access type feature related information to the network side device includes the terminal reporting random access in MCG failure record information (MCG failure report) or SCG failure record information (MCG failure report) or failure record information (Failure Information). Enter information about type characteristics.
  • MCG failure record information MCG failure record information
  • SCG failure record information MCG failure report
  • Failure record information Failure Information
  • the network side device before the network side device receives the feature-related information of the random access type used by the random access attempt of the terminal in a random access process reported by the terminal, it also needs to receive the first indication message sent by the terminal, wherein the first indication message is sent by the terminal.
  • the indication message is used to indicate that the network side device can obtain the feature-related information of the random access type; based on the first indication message, a second indication message is sent to the terminal, where the second indication message is used to indicate that the terminal has the characteristic-related information of the random access type Reporting; at this time, when the network side device receives the feature-related information of the random access type used by the random access attempt of the terminal in this random access process reported by the terminal, it can receive the information about the random access type reported by the terminal based on the second indication message, including the random access type. A record of information about the characteristics of the input type.
  • the network side device receives the first indication message sent by the terminal, it may include any of the following methods:
  • the network-side device in this embodiment can clearly identify the terminal in this random access process by receiving the information about the characteristics of the random access type used in the random access attempt of the terminal in one random access process reported by the terminal.
  • the random access type characteristics associated with each random access attempt in the Random Access Mode so that the optimal operation can be performed for different types of random access configuration resources.
  • the feature-related information of the random access type is included in the connection establishment failure record information or the connection recovery failure record information:
  • the terminal records connection establishment failure record information or connection recovery failure record information including feature-related information of the random access type, wherein the connection establishment failure or connection recovery failure record information is when the connection fails or the connection recovery fails. trigger the recording process;
  • the terminal indicates in the specific message that the connection establishment failure record information or the connection recovery failure record information including the feature-related information of the random access type is desirable to the network side.
  • the specific message may be an RRC reestablishment complete message (RRC Reestablishment Complete), an RRC reconfiguration complete message (RRC Reconfiguration Complete), an RRC connection restoration complete message (RRC Resume Complete), and an RRC connection establishment complete message (RRC Setup Complete) or a terminal information response message (UE Information Response), which is not specifically limited here.
  • the network side device decides to retrieve the connection establishment failure record information or the connection recovery failure record information recorded by the terminal including the feature-related information of the random access type.
  • the type of feature-related information is connection establishment failure record information or connection recovery failure record information.
  • the terminal reports the connection establishment failure record information or the connection recovery failure record information including the feature-related information of the random access type through dedicated signaling.
  • the feature-related information of the random access type is included in the radio link failure record information or the handover failure record information:
  • the terminal records the radio link failure record information or handover failure record information including the feature-related information of the random access type, wherein the radio link failure record information or the handover failure record information is in the radio link failure or handover failure record information. Trigger the recording process when the switch fails;
  • the terminal indicates in the specific message that the radio link failure record information or the handover failure record information that includes the feature-related information of the random access type is desirable to the network side.
  • the specific message may be RRC Reestablishment Complete, RRC Reconfiguration Complete, RRC Resume Complete, RRC Setup Complete, or UE Information Response, which is not specifically limited here.
  • the network side device decides to retrieve the radio link failure record information or handover failure record information recorded by the terminal that includes the feature-related information of the random access type.
  • the type of feature-related information is wireless link failure record information or handover failure record information.
  • the terminal reports the radio link failure record information or the handover failure record information including the feature-related information of the random access type through dedicated signaling.
  • the random access success record information includes feature-related information of the random access type:
  • the terminal records random access success record information including feature-related information of the random access type, wherein the random access success record information triggers the recording process when the random access is successful;
  • the terminal accesses the network through the RRCReestablishmentComplete message or the RRCReconfigurationComplete message or the RRCResumeComplete message or the RRCSetupComplete message;
  • the network-side device decides to retrieve the random access successful record information recorded by the terminal that includes the feature-related information of the random access type. At this time, the network-side device instructs the terminal to report the feature-related information including the random access type through dedicated signaling. Random access success record information.
  • the terminal After receiving the request from the network side, the terminal reports random access success record information including feature-related information of the random access type through dedicated signaling.
  • the feature-related information of the random access type is included in the MCG failure record information or the SCG failure record information:
  • a connection failure occurs between the terminal and the MCG; then, if the connection between the terminal and the SCG is still normal, the terminal reports the MCG failure record information including the feature-related information of the random access type to the SCG.
  • a connection failure occurs between the terminal and the SCG; then, if the connection between the terminal and the MCG is still normal, the terminal reports the SCG failure record information including the feature-related information of the random access type to the MCG.
  • the feature-related information of the random access type is included in the failure record information:
  • the terminal reports the failure record information including the feature-related information of the random access type to the network side.
  • the reporting process of the feature-related information of the random access type is implemented by any of the above embodiments.
  • FIG. 9 is a block diagram of a module of an apparatus for transmitting random access information applied to a terminal in an embodiment of the present disclosure, the apparatus includes:
  • a reporting module 901 configured to report to the network-side device the feature-related information of the random access type used by the terminal for a random access attempt in a random access process, wherein the feature-related information is used to indicate that the terminal is in this random access process.
  • the random access type feature associated with each random access attempt in the access process.
  • the feature-related information of the random access type includes at least one or more of the following information:
  • the network side only configures the indication information of two-step random access resources in the random access process of the terminal;
  • Random access frequency resource information used by the terminal in this random access process
  • the number of random access attempts using the two-step random access type or the number of random access attempts using the four-step random access type among all random access attempts sent by the terminal Or the number of times the random access message msgA is sent;
  • the third failure cause when the random access response message msg2 or msgB cannot be completely received in each random access attempt, wherein the third failure cause is the physical downlink control channel PDCCH solution
  • the modulation is unsuccessful or the PDSCH demodulation of the physical downlink shared channel is unsuccessful.
  • the preset recording conditions include:
  • the network-side device has been configured with a threshold for the maximum number of transmissions of msgA before switching from a two-step random access attempt to a four-step random access attempt;
  • the network-side device has been configured with resources related to the two-step random access type and the four-step random access type; and,
  • the value of the transmission times counter of the random access preamble recorded by the terminal is the sum of the msgA maximum transmission times threshold and 1, and the value of the last random access attempt in the past
  • the sent random access message is msgA; or, the value of the transmission times counter of the random access preamble recorded by the terminal is the sum of the msgA maximum transmission times threshold and 1, and the last random access attempt in the past failed
  • the random access message sent when the random access attempt fails is msgA.
  • the first failure reason includes:
  • the terminal does not receive the msg2 including the random access code index (PREAMBLE_INDEX) used by the terminal for this random access attempt; or, the random access competition fails.
  • PREAMBLE_INDEX the random access code index
  • the second failure reason includes:
  • the terminal When the random access response window times out, the terminal does not receive the msgB containing the random access code index (PREAMBLE_INDEX) used by the terminal for this random access attempt, or does not receive the temporary identifier C- msgB of PDCCH scrambled by RNTI; or, random access contention failure.
  • PREAMBLE_INDEX the random access code index
  • the apparatus provided in this embodiment can implement all the method steps that can be implemented by the above-mentioned terminal-side method embodiments, and can achieve the same technical effect, which is not repeated here.
  • FIG. 10 it is a block diagram of a module of an apparatus for transmitting random access information applied to a network-side device in an embodiment of the present disclosure, and the apparatus includes:
  • the receiving module 1001 is configured to receive the feature-related information of the random access type used by the random access attempt in a random access process of the terminal reported by the terminal, wherein the feature-related information is used to indicate that the terminal is in this random access process.
  • the determining module 1002 is configured to determine the random access type characteristic associated with each random access attempt of the terminal in the random access process according to the characteristic related information of the random access type.
  • the feature-related information of the random access type includes at least one or more of the following information:
  • the network side only configures the indication information of two-step random access resources in the random access process of the terminal;
  • Random access frequency resource information used by the terminal in this random access process
  • the number of random access attempts using the two-step random access type or the number of random access attempts using the four-step random access type among all random access attempts sent by the terminal Or the number of times the random access message msgA is sent;
  • the third failure cause when the random access response message msg2 or msgB cannot be completely received in each random access attempt, wherein the third failure cause is the physical downlink control channel PDCCH solution
  • the modulation is unsuccessful or the PDSCH demodulation of the physical downlink shared channel is unsuccessful.
  • the preset recording conditions include:
  • the network-side device has been configured with a threshold for the maximum number of transmissions of msgA before switching from a two-step random access attempt to a four-step random access attempt;
  • the network-side device has been configured with resources related to the two-step random access type and the four-step random access type; and,
  • the value of the transmission times counter of the random access preamble recorded by the terminal is the sum of the msgA maximum transmission times threshold and 1, and the value of the last random access attempt in the past
  • the sent random access message is msgA; or, the value of the transmission times counter of the random access preamble recorded by the terminal is the sum of the msgA maximum transmission times threshold and 1, and the last random access attempt in the past failed
  • the random access message sent when the random access attempt fails is msgA.
  • the first failure reason includes:
  • the terminal does not receive the msg2 including the random access code index (PREAMBLE_INDEX) used by the terminal for this random access attempt; or, the random access competition fails.
  • PREAMBLE_INDEX the random access code index
  • the second failure reason includes:
  • the terminal When the random access response window times out, the terminal does not receive the msgB containing the random access code index (PREAMBLE_INDEX) used by the terminal for this random access attempt, or does not receive the temporary identifier C- msgB of PDCCH scrambled by RNTI; or, random access contention failure.
  • PREAMBLE_INDEX the random access code index
  • the apparatus provided in this embodiment can implement all the method steps that can be implemented by the foregoing network side device method embodiments, and can achieve the same technical effect, which is not repeated here.
  • the terminal may include: a processor (processor) 1110 , a communication interface (Communications Interface) 1120 , a memory (memory) 1130 , and a communication bus 1140 , wherein, the processor 1110 , the communication interface 1120 , and the memory 1130 complete the communication with each other through the communication bus 1140 .
  • the processor 1110 may invoke a computer program stored on the memory 1130 and executable on the processor 1110 to perform the following steps:
  • the feature-related information of the random access type used by the terminal for a random access attempt in a random access process of the terminal to the network-side device, where the feature-related information is used to indicate that the terminal performs each random access process in the random access process.
  • the random access type characteristic associated with the random access attempt is used to indicate that the terminal performs each random access process in the random access process.
  • the feature-related information of the random access type includes at least one or more of the following information:
  • the network side only configures the indication information of two-step random access resources in the random access process of the terminal;
  • Random access frequency resource information used by the terminal in this random access process
  • the number of random access attempts using the two-step random access type or the number of random access attempts using the four-step random access type among all random access attempts sent by the terminal Or the number of times the random access message msgA is sent;
  • the third failure cause when the random access response message msg2 or msgB cannot be completely received in each random access attempt, wherein the third failure cause is the physical downlink control channel PDCCH solution
  • the modulation is unsuccessful or the PDSCH demodulation of the physical downlink shared channel is unsuccessful.
  • the preset recording conditions include:
  • the network-side device has been configured with a threshold for the maximum number of transmissions of msgA before switching from a two-step random access attempt to a four-step random access attempt;
  • the network-side device has been configured with resources related to the two-step random access type and the four-step random access type; and,
  • the value of the transmission times counter of the random access preamble recorded by the terminal is the sum of the msgA maximum transmission times threshold and 1, and the value of the last random access attempt in the past
  • the sent random access message is msgA; or, the value of the transmission times counter of the random access preamble recorded by the terminal is the sum of the msgA maximum transmission times threshold and 1, and the last random access attempt in the past failed
  • the random access message sent when the random access attempt fails is msgA.
  • the first failure reason includes:
  • the terminal does not receive msg2 including the random access code index (PREAMBLE_INDEX) used by the terminal for this random access attempt; or, the random access competition fails.
  • PREAMBLE_INDEX the random access code index
  • the second failure reason includes:
  • the terminal When the random access response window times out, the terminal does not receive the msgB containing the random access code index (PREAMBLE_INDEX) used by the terminal for this random access attempt, or does not receive the temporary identifier C- msgB of PDCCH scrambled by RNTI; or, random access contention failure.
  • PREAMBLE_INDEX the random access code index
  • the feature-related information of the random access type used in the random access attempt of the terminal in this random access process includes any one of the following:
  • connection establishment failure record information or connection recovery failure record information Sending connection establishment failure record information or connection recovery failure record information to the network side device, wherein both the connection establishment failure record information and the connection recovery failure record information include feature-related information of the random access type;
  • radio link failure record information or handover failure record information to the network side device, wherein both the radio link failure record information and the handover failure record information include feature-related information of the random access type;
  • random access success record information includes feature-related information of the random access type
  • failure record information to the network-side device, wherein the failure record information includes feature-related information of the random access type.
  • the method before the reporting to the network side device the feature-related information of the random access type used in the random access attempt of the terminal in this random access process, the method further includes:
  • the reporting to the network-side device the feature-related information of the random access type used by the terminal in the random access attempt in this random access process including:
  • the record containing the feature-related information of the random access type is reported to the network-side device based on the second indication message.
  • the sending the first indication message to the network side device includes any one of the following:
  • the terminal provided in this embodiment can implement all the method steps that can be implemented by the above-mentioned terminal method embodiments, and can achieve the same technical effect, which is not repeated here.
  • the above-mentioned logic instructions in the memory 1130 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.
  • the technical solutions of the present disclosure can be embodied in the form of software products in essence, or the parts that contribute to the prior art or the parts of the technical solutions.
  • the computer software products are stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .
  • the network-side device may include: a processor (processor) 1210 , a communications interface (Communications Interface) 1220 , and a memory (memory) 1230 and a communication bus 1240 , wherein the processor 1210 , the communication interface 1220 , and the memory 1230 communicate with each other through the communication bus 1240 .
  • the processor 1210 can invoke a computer program stored on the memory 1230 and executable on the processor 1210 to perform the following steps:
  • the random access type feature associated with the access attempt is determined according to the feature-related information of the random access type.
  • the network-side device provided in this embodiment can implement all the method steps that can be implemented by the above-mentioned network-side device method embodiments, and can achieve the same technical effect, which is not repeated here.
  • the above-mentioned logic instructions in the memory 1230 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.
  • the technical solutions of the present disclosure can be embodied in the form of software products in essence, or the parts that contribute to the prior art or the parts of the technical solutions.
  • the computer software products are stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .
  • the electronic device provided by the embodiments of the present disclosure includes corresponding hardware structures and/or software modules for executing each function.
  • the present disclosure can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the present disclosure.
  • each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be Incorporation may either be integrated into another system, or some features may be omitted, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection of devices or units through some interfaces.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of software functional units.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present disclosure.
  • the computer storage medium is a non-transitory (English: nontransitory) medium, including: flash memory, removable hard disk, read-only memory, random access memory, magnetic disk or optical disk and other mediums that can store program codes.
  • an embodiment of the present disclosure also provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the method steps provided in the above embodiments and can achieve the same The technical effect will not be repeated here.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de l'invention concernent un procédé de transmission pour des informations d'accès aléatoire, ainsi qu'un terminal et un dispositif côté réseau. Le procédé consiste à : rapporter, au dispositif côté réseau, des informations relatives aux caractéristiques d'un type d'accès aléatoire utilisé pour une tentative d'accès aléatoire dans un processus d'accès aléatoire actuel du terminal, les informations relatives à la caractéristique servant à indiquer la caractéristique d'un type d'accès aléatoire associé à chaque tentative d'accès aléatoire dans le processus d'accès aléatoire actuel du terminal. Selon les modes de réalisation de l'invention, le dispositif côté réseau peut identifier les caractéristiques de types d'accès aléatoire associées à des tentatives d'accès aléatoire.
PCT/CN2021/103338 2020-07-02 2021-06-30 Procédé de transmission pour des informations d'accès aléatoire, terminal et dispositif côté réseau WO2022002092A1 (fr)

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