Random access method and apparatus and storage medium

Abstract

The present disclosure provides a random access method and apparatus and a storage medium. The random access method is applied to a terminal, and comprises: determining a target numerical value on the basis of a preset condition, or receiving a target numerical value sent by a network device, the target numerical value being used for determining the number of association pattern periods comprised in the time domain period length of one set of RO groups, and the one set of RO groups comprising one or more RO groups; and performing random access on the RO groups comprised in the time domain period length.

Description

Random access method, device and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202310941837.5, filed on July 28, 2023, entitled “Random Access Method, Device and Storage Medium,” which is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates to the field of communication technologies, and in particular to a random access method, device, and storage medium. Background Art

[0004] Multiple Physical Random Access Channel (PRACH) transmissions can be performed consecutively in one Random Access (RA) attempt. Multiple PRACH transmissions in one RA attempt can only be performed within one Random Access Channel Occasion (RO) group. The number of valid ROs contained in an RO group is equal to the number of multiple PRACH transmissions configured by the network.

[0005] However, when multiple PRACH transmissions are repeated, the related technology cannot determine the division of RO groups corresponding to each multiple PRACH transmission, that is, it cannot determine the starting position of each multiple PRACH transmission, thereby failing to ensure the smooth transmission of multiple PRACHs, resulting in a reduced success rate of random access.

[0006] Summary of the Invention

[0007] The embodiments of the present disclosure provide a random access method, apparatus, and storage medium to solve the technical problem of low random access success rate in related technologies.

[0008] In a first aspect, an embodiment of the present disclosure provides a random access method, applied to a terminal, including:

[0009] Determining a target value based on a preset condition, or receiving a target value sent by a network device; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups;

[0010] Random access is performed on the RO group included in the time domain cycle length.

[0011] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0012] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required for the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group to be less than and / or equal to a threshold value; the remaining ROs are valid ROs that are associated with the SSB and do not belong to any RO group.

[0013] In some embodiments, the threshold value is a non-negative integer and includes any of the following:

[0014] The value of the network device configuration;

[0015] Preset fixed value.

[0016] In some embodiments, the method further comprises:

[0017] The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0018] In some embodiments, the method further comprises:

[0019] The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

[0020] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0021] In some embodiments, receiving the target value sent by the network device includes:

[0022] receiving a target value corresponding to the number of transmissions of each multi-physical random access channel sent by the network device through RRC signaling;

[0023] Determine a target value corresponding to the current number of multi-physical random access channel transmissions.

[0024] In some embodiments, receiving the target value sent by the network device includes:

[0025] A target value corresponding to all the multiple physical random access channel transmission times sent by the receiving network device through RRC signaling.

[0026] In some embodiments, the method further comprises:

[0027] Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length;

[0028] The number of associated pattern periods included in the time domain period length is determined to be a minimum value between the target value and the maximum number of associated pattern periods.

[0029] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0030] Absolute value;

[0031] An integer number of associated pattern periods.

[0032] In a second aspect, an embodiment of the present disclosure provides a random access method, applied to a network device, including:

[0033] Determine a target value based on a preset condition, or send a target value to the terminal; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups;

[0034] Random access is performed on the RO group included in the time domain cycle length.

[0035] In some embodiments, sending the target value to the terminal includes:

[0036] A target value corresponding to the number of transmissions of each type of multiple physical random access channel is sent to the terminal through radio resource control RRC signaling; the target value corresponding to the number of transmissions of each type of multiple physical random access channel is a positive integer.

[0037] In some embodiments, the target value corresponding to the number of transmissions of each type of multiple physical random access channel is in a range of greater than or equal to 1 and less than or equal to the corresponding number of transmissions of the multiple physical random access channel.

[0038] In some embodiments, sending the target value to the terminal includes:

[0039] A target value corresponding to the number of transmissions of all multiple physical random access channels is sent to the terminal through RRC signaling; the target value corresponding to the number of transmissions of all multiple physical random access channels is a positive integer.

[0040] In some embodiments, the target value corresponding to the number of transmissions of all multiple physical random access channels is in a range of greater than or equal to 1 and less than or equal to the maximum number of transmissions of the multiple physical random access channel transmissions configured in the current serving cell.

[0041] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0042] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required to ensure that the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to a threshold value; the remaining RO refers to a valid RO that is associated with the SSB and does not belong to any RO group.

[0043] In some embodiments, the threshold value is a preset fixed value; the preset fixed value is a non-negative integer.

[0044] In some embodiments, the method further comprises:

[0045] The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0046] In some embodiments, the method further comprises:

[0047] The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

[0048] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0049] In some embodiments, the method further comprises:

[0050] Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length;

[0051] The number of associated pattern periods included in the time domain period length is determined to be a minimum value between the target value and the maximum number of associated pattern periods.

[0052] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0053] Absolute value;

[0054] An integer number of associated pattern periods.

[0055] In a third aspect, an embodiment of the present disclosure provides a terminal, including a memory, a transceiver, and a processor;

[0056] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0057] Determining a target value based on a preset condition, or receiving a target value sent by a network device; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups;

[0058] Random access is performed on the RO group included in the time domain cycle length.

[0059] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0060] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required for the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group to be less than and / or equal to a threshold value; the remaining ROs are valid ROs that are associated with the SSB and do not belong to any RO group.

[0061] In some embodiments, the threshold value is a non-negative integer and includes any of the following:

[0062] The value of the network device configuration;

[0063] Preset fixed value.

[0064] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0065] The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0066] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0067] The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

[0068] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0069] In some embodiments, receiving the target value sent by the network device includes:

[0070] receiving a target value corresponding to the number of transmissions of each multi-physical random access channel sent by the network device through RRC signaling;

[0071] Determine a target value corresponding to the current number of multi-physical random access channel transmissions.

[0072] In some embodiments, receiving the target value sent by the network device includes:

[0073] A target value corresponding to all the multiple physical random access channel transmission times sent by the receiving network device through RRC signaling.

[0074] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0075] Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length;

[0076] The number of associated pattern periods included in the time domain period length is determined to be a minimum value between the target value and the maximum number of associated pattern periods.

[0077] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0078] Absolute value;

[0079] An integer number of associated pattern periods.

[0080] In a fourth aspect, an embodiment of the present disclosure provides a network device, including a memory, a transceiver, and a processor;

[0081] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0082] Determine a target value based on a preset condition, or send a target value to the terminal; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups;

[0083] Random access is performed on the RO group included in the time domain cycle length.

[0084] In some embodiments, sending the target value to the terminal includes:

[0085] A target value corresponding to the number of transmissions of each type of multiple physical random access channel is sent to the terminal through radio resource control RRC signaling; the target value corresponding to the number of transmissions of each type of multiple physical random access channel is a positive integer.

[0086] In some embodiments, the target value corresponding to the number of transmissions of each type of multiple physical random access channel is in a range of greater than or equal to 1 and less than or equal to the corresponding number of transmissions of the multiple physical random access channel.

[0087] In some embodiments, sending the target value to the terminal includes:

[0088] A target value corresponding to the number of transmissions of all multiple physical random access channels is sent to the terminal through RRC signaling; the target value corresponding to the number of transmissions of all multiple physical random access channels is a positive integer.

[0089] In some embodiments, the target value corresponding to the number of transmissions of all multiple physical random access channels is in a range of greater than or equal to 1 and less than or equal to the maximum number of transmissions of the multiple physical random access channel transmissions configured in the current serving cell.

[0090] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0091] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required to ensure that the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to a threshold value; the remaining RO refers to a valid RO that is associated with the SSB and does not belong to any RO group.

[0092] In some embodiments, the threshold value is a preset fixed value; the preset fixed value is a non-negative integer.

[0093] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0094] The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0095] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0096] The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

[0097] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0098] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0099] Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length;

[0100] The number of associated pattern periods included in the time domain period length is determined to be a minimum value between the target value and the maximum number of associated pattern periods.

[0101] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0102] Absolute value;

[0103] An integer number of associated pattern periods.

[0104] In a fifth aspect, an embodiment of the present disclosure provides a random access device, including:

[0105] A first determining module is configured to determine a target value based on a preset condition or receive a target value sent by a network device; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups;

[0106] The first random access module is configured to perform random access on the RO group included in the time domain cycle length.

[0107] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0108] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required for the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group to be less than and / or equal to a threshold value; the remaining ROs are valid ROs that are associated with the SSB and do not belong to any RO group.

[0109] In some embodiments, the threshold value is a non-negative integer and includes any of the following:

[0110] The value of the network device configuration;

[0111] Preset fixed value.

[0112] In some embodiments, further comprising:

[0113] The third determining module is configured to determine the threshold value according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0114] In some embodiments, further comprising:

[0115] The first rounding module is configured to round up or down the product of the number of valid ROs included in the associated pattern period and the preset coefficient, or the product of the number of valid ROs included in the RO group and the preset coefficient.

[0116] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0117] In some embodiments, the first determining module includes:

[0118] The first receiving unit is configured to receive a target value corresponding to the number of transmissions of each multi-physical random access channel sent by the network device through RRC signaling;

[0119] The first determining unit is configured to determine a target value corresponding to the current number of transmission times of the multiple physical random access channels.

[0120] In some embodiments, the first determining module further includes:

[0121] The second receiving unit is configured to receive a target value corresponding to all multi-physical random access channel transmission times sent by the network device through RRC signaling.

[0122] In some embodiments, further comprising:

[0123] a fourth determining module, configured to determine a maximum number of associated pattern periods included within an upper limit of a time domain period length;

[0124] The fifth determining module is configured to determine that the number of associated pattern periods included in the time domain period length is the minimum value between the target value and the maximum number of associated pattern periods.

[0125] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0126] Absolute value;

[0127] An integer number of associated pattern periods.

[0128] In a sixth aspect, an embodiment of the present disclosure provides a random access device, including:

[0129] a second determining module, configured to determine a target value based on a preset condition, or to send the target value to the terminal; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups;

[0130] The second random access module is configured to perform random access on the RO group included in the time domain cycle length.

[0131] In some embodiments, the second determining module includes:

[0132] The first sending unit is configured to send a target value corresponding to the number of transmissions of each type of multiple physical random access channel to the terminal through radio resource control RRC signaling; the target value corresponding to the number of transmissions of each type of multiple physical random access channel is a positive integer.

[0133] In some embodiments, the target value corresponding to the number of transmissions of each type of multiple physical random access channel is in a range of greater than or equal to 1 and less than or equal to the corresponding number of transmissions of the multiple physical random access channel.

[0134] In some embodiments, the second determining module further includes:

[0135] The second sending unit is configured to send a target value corresponding to the number of transmissions of all multiple physical random access channels to the terminal through RRC signaling; the target value corresponding to the number of transmissions of all multiple physical random access channels is a positive integer.

[0136] In some embodiments, the target value corresponding to the number of transmissions of all multiple physical random access channels is in a range of greater than or equal to 1 and less than or equal to the maximum number of transmissions of the multiple physical random access channel transmissions configured in the current serving cell.

[0137] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0138] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required to ensure that the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to a threshold value; the remaining RO refers to a valid RO that is associated with the SSB and does not belong to any RO group.

[0139] In some embodiments, the threshold value is a preset fixed value; the preset fixed value is a non-negative integer.

[0140] In some embodiments, further comprising:

[0141] The sixth determining module is configured to determine the threshold value according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0142] In some embodiments, further comprising:

[0143] The second rounding module is configured to round up or down the product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient.

[0144] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0145] In some embodiments, further comprising:

[0146] a seventh determining module, configured to determine a maximum number of associated pattern periods included within an upper limit of a time domain period length;

[0147] An eighth determining module is configured to determine that the number of associated pattern periods included in the time domain period length is a minimum value between the target value and a maximum number of associated pattern periods.

[0148] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0149] Absolute value;

[0150] An integer number of associated pattern periods.

[0151] In the seventh aspect, an embodiment of the present disclosure further provides a non-transitory readable storage medium, wherein the non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the random access method described in the first aspect or the second aspect above.

[0152] In an eighth aspect, an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the random access method described in the first aspect or the second aspect above.

[0153] In a ninth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is used to enable a computer to execute the random access method described in the first aspect or the second aspect above.

[0154] In the tenth aspect, an embodiment of the present disclosure further provides a communication device, in which a computer program is stored, and the computer program is used to enable the communication device to execute the random access method described in the first aspect or the second aspect above.

[0155] In the eleventh aspect, an embodiment of the present disclosure further provides a chip product, wherein a computer program is stored in the chip product, and the computer program is used to enable the chip product to execute the random access method described in the first aspect or the second aspect above.

[0156] The random access method, apparatus, and storage medium provided by the embodiments of the present disclosure determine a target value based on preset conditions or configure the target value through a network device, and determine the number of association pattern periods contained in the time domain period length of a group of RO groups, thereby enabling periodic division of the RO groups. This allows the terminal and network device to quickly determine the starting position of each multi-PRACH transmission, ensuring the smooth transmission of multiple PRACHs and improving the success rate of random access. BRIEF DESCRIPTION OF THE DRAWINGS

[0157] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0158] FIG1 is a flow chart of a random access method according to an embodiment of the present disclosure;

[0159] FIG2 is one of the schematic diagrams of time domain cycle length division of an example scenario provided by an embodiment of the present disclosure;

[0160] FIG3 is a second schematic diagram of time domain cycle length division of an example scenario provided by an embodiment of the present disclosure;

[0161] FIG4 is a third schematic diagram of time domain cycle length division of an example scenario provided by an embodiment of the present disclosure;

[0162] FIG5 is a fourth schematic diagram of time domain cycle length division of an example scenario provided by an embodiment of the present disclosure;

[0163] FIG6 is a second flow chart of the random access method provided in an embodiment of the present disclosure;

[0164] FIG7 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure;

[0165] FIG8 is a schematic structural diagram of a network device provided by an embodiment of the present disclosure;

[0166] FIG9 is a schematic diagram of a random access device according to an embodiment of the present disclosure;

[0167] FIG10 is a second structural diagram of a random access device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0168] An association pattern period contains one or more association periods, and an association pattern period causes the mapping of synchronization signal / physical broadcast channel block (SSB) to RO (SSB-to-RO mapping) to repeat at most every 160ms. After an integer number of association periods, if there are ROs that are not associated with an SSB index, these ROs that are not associated with an SSB index are no longer used for PRACH transmission.

[0169] Currently, PRACH supports 2 / 4 / 8 repeated transmissions, meaning that a single RA attempt can perform 2 / 4 / 8 consecutive PRACH transmissions. Multiple PRACH transmissions in a single RA attempt can only be transmitted within a single RO group. An RO group contains a number of valid ROs equal to the configured multiple PRACH transmission count. If the network configures a single transmission count within a cell, the number of valid ROs in an RO group equals that number. If the network configures multiple transmission counts within a cell, the number of valid ROs in an RO group equals that number.

[0170] Starting from system frame 0, a set of RO groups is repeatedly determined / configured within each time domain period (time period X), which is K SSB-to-RO association pattern periods, where K is a positive integer. The SSB-to-RO mapping within each association pattern period is identical and inherently repeatable. However, there is no solution for determining the K value. Terminals and network devices cannot use the time domain period length to quickly determine the division of RO groups, which cannot ensure smooth PRACH transmission and reduces the success rate of random access.

[0171] To address the above technical issues, embodiments of the present disclosure propose a random access method in which a terminal and network device only need to determine a set of RO groups within a time domain cycle length. Subsequent RO group divisions only need to repeat the first time domain cycle length. A target value is determined based on preset conditions or configured by the network device. The target value is used to determine the number of associated pattern periods corresponding to the time domain cycle length containing a set of RO groups. This allows the terminal and network device to quickly determine the starting position of each multi-PRACH transmission and perform random access on the RO groups within that time domain cycle length, ensuring smooth multi-PRACH transmission and improving the success rate of random access.

[0172] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0173] FIG1 is a flow chart of a random access method provided by an embodiment of the present disclosure. As shown in FIG1 , an embodiment of the present disclosure provides a random access method, the execution subject of which may be a terminal / user equipment (UE), such as a mobile phone. The method includes:

[0174] Step 101: Determine a target value based on a preset condition, or receive a target value sent by a network device; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups.

[0175] Specifically, the target value is used to determine the number of association pattern periods contained in a time period length (time period X), and each time period length includes a group of RO groups, and a group of RO groups includes one or more RO groups.

[0176] In the embodiment of the present disclosure, the terminal can determine the target value based on a preset condition, which is a predefined rule. Similarly, the network device can also determine the target value based on a preset condition, and the specific determination process is similar to that on the terminal side.

[0177] For example, the terminal determines the target value as the minimum value of the number of association pattern periods required to satisfy the requirement that each synchronization signal block SSB in one or more association pattern periods is associated with at least one RO group.

[0178] For another example, the terminal determines the target value as the minimum value of the number of association pattern periods required to satisfy the requirement that the number of remaining ROs after each SSB in one or more association pattern periods is associated with at least one RO group is less than and / or equal to a preset / preconfigured threshold value, where the remaining ROs refer to valid ROs that are associated with the SSB and do not belong to any RO group.

[0179] The terminal can also determine the target value through network-side configuration. That is, the network device sends the target value to the terminal, and the terminal receives the target value sent by the network device. The target value sent by the network device can be one or more. If the network device sends multiple target values ​​to the terminal, the terminal needs to further determine a target value for the current multi-PRACH transmission from them.

[0180] For example, when multiple PRACH transmissions with different multiple PRACH transmission times are performed on independent RACH resources, the network device sends a target value corresponding to each multiple PRACH transmission time to the terminal through Radio Resource Control (RRC) signaling. These target values ​​are all positive integers. The terminal receives the target value corresponding to each multiple PRACH transmission time sent by the network device through RRC signaling.

[0181] For another example, when multiple PRACH transmissions with different multiple PRACH transmission times are performed on a shared RACH resource, the network device sends a target value corresponding to all multiple PRACH transmission times to the terminal via RRC signaling. That is, all multiple PRACH transmission times share the same target value, which is a positive integer. The terminal receives the target value shared by all multiple physical random access channel transmission times sent by the network device via RRC signaling.

[0182] Step 102: Perform random access on the RO group included in the time domain cycle length.

[0183] Specifically, in the embodiment of the present disclosure, after determining the target value, the terminal or network device can determine a time domain period length, that is, the target value association pattern period, and perform random access or multiple PRACH transmissions on the RO group included in the time domain period length.

[0184] For example, after determining the target value K, the terminal or network device learns that the length of a time domain cycle is K association pattern cycles, and performs random access on the RO group included in the time domain cycle length.

[0185] The random access method provided by the embodiments of the present disclosure determines a target value based on preset conditions or configures the target value through a network device, determines the number of association pattern periods contained in the time domain period length of a group of RO groups, thereby enabling rapid periodic division of the RO groups. This allows the terminal and the network device to quickly determine the starting position of each multi-PRACH transmission, thereby ensuring smooth PRACH transmission and improving the success rate of random access.

[0186] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0187] Specifically, the preset condition may be that the target value is the minimum number of association pattern periods required to ensure that each SSB in one or more association pattern periods is associated with at least one RO group. That is, at least the target value of association pattern periods is required to determine / configure at least one RO group for each SSB in these association pattern periods.

[0188] For example, assuming the number of valid ROs associated with the same SSB index in an association pattern period is 3 and the number of multi-PRACH transmissions is 4, an RO group contains 4 valid ROs. Therefore, at least two association pattern periods are required to ensure that each SSB in the association pattern period is associated with at least one RO group, i.e., the target value is 2.

[0189] The random access method provided in the above embodiment is further described below through a specific example:

[0190] Example 1:

[0191] Figure 2 is one of the schematic diagrams of the time domain cycle length division of the example scenario provided by the embodiment of the present disclosure. As shown in Figure 2, an association pattern period contains one or more association periods. The figure shows the association periods and association pattern periods from system frame numbers SFN0 to SFN15. There are two ROs in a system frame. The network is configured with two candidate SSBs, namely SSB1 and SSB2. There are two valid ROs in the first system frame number (System Frame Number, SFN), which are associated with SSB1 and SSB2 respectively, thus forming an association period (Association Period, AP). Similarly, the second SFN constitutes an AP. The third SFN has an invalid RO and needs to form an AP together with the fourth SFN to complete the round-robin mapping of SSB1 and SSB2. As a result, the fourth SFN has one RO remaining, which cannot fully map two SSBs and is no longer used for SSB mapping. The subsequent SFN repeats the situation of the first four frames. Therefore, the three APs in the first four frames constitute an association pattern period.

[0192] Multi-PRACH transmissions use the same SSB-to-RO mapping pattern as single PRACH transmissions. Assuming four multi-PRACH transmissions, i.e., one RO group contains four valid ROs, the UE can determine the number of associated pattern periods, K, included in the time domain cycle length as follows.

[0193] The terminal and the base station determine the number of association pattern periods K corresponding to the time domain period length containing a group of RO groups through preset conditions. K is the minimum number of association pattern periods required to determine / configure at least one RO group for each SSB in one or more association pattern periods. As shown in (1) in Figure 2, the number of valid ROs associated with the same SSB index in one association pattern period is 3. Since an RO group contains 4 valid ROs, at least 2 association pattern periods are required. Therefore, the minimum number of association pattern periods required to determine / configure at least one RO group for each SSB in the association pattern period is 2. As shown in (2) in Figure 2, the first 4 ROs associated with the same SSB index in two association pattern periods form an RO group corresponding to the SSB index. The last two valid ROs associated with each SSB in the second association pattern period that can be used for single PRACH transmission cannot form an RO group and become the remaining ROs for multiple PRACH transmission.

[0194] While determining the number of association periods K, a group of RO groups included in the K association pattern periods can be determined, and the terminal performs multi-PRACH transmission on the RO group associated with the SSB index selected by the terminal.

[0195] The random access method provided by the embodiment of the present disclosure determines a target value by determining the minimum number of association pattern periods required to associate each synchronization signal block SSB with at least one RO group within one or more association pattern periods, thereby ensuring that multiple PRACH transmissions are successfully completed on the RO groups included in the target number of association pattern periods, and improving the transmission efficiency and the success rate of random access.

[0196] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required for the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group to be less than and / or equal to a threshold value; the remaining ROs are valid ROs that are associated with the SSB and do not belong to any RO group.

[0197] Specifically, the remaining ROs refer to valid ROs that are associated with the SSB within the association pattern period, can be used for single PRACH transmission, and do not belong to any RO group.

[0198] The preset condition may be: the target value is the minimum value of the number of association pattern periods required to satisfy that the number of ROs remaining after each SSB is associated with at least one RO group within one or more association pattern periods is less than and / or equal to the threshold value. That is, at least the target value of association pattern periods is required to satisfy that the number of ROs remaining after at least one RO group is determined / configured for each SSB within these association pattern periods is less than and / or equal to the threshold value.

[0199] For example, assuming the threshold value is 0, there are no remaining ROs after at least one RO group is determined / configured for each SSB within the associated pattern period. That is, all valid ROs associated with the SSB index for single PRACH transmission within the target number of associated pattern periods can be used for multiple PRACH transmission. Assuming the threshold value is 1, there is at most one remaining RO after at least one RO group is determined / configured for each SSB within the associated pattern period.

[0200] When the threshold value is 0, the preset condition can also be expressed as: the target value is the minimum value of the number of associated pattern periods required to satisfy that the number of valid ROs associated with the same SSB index in one or more associated pattern periods is an integer multiple of the number of valid ROs included in an RO group.

[0201] For example, if the number of valid ROs associated with the same SSB index in one association pattern period is 3, and the number of valid ROs contained in one RO group is 4, then at least four association pattern periods are required to meet the target value. The number of valid ROs associated with the same SSB index in (K) association pattern periods is an integer multiple of the number of valid ROs contained in one RO group. That is, the minimum value of K is 4, and at least 4 (K) 3s are an integer multiple of 4 (the number of valid ROs contained in one RO group).

[0202] When the threshold value is 0, the preset condition can also be expressed as: the target value is equal to the least common multiple of the number of valid ROs associated with the same SSB index in one association pattern period and the number of multiple PRACH transmissions, divided by the value obtained by dividing the number of valid ROs associated with the same SSB index in one association pattern period.

[0203] For example, the number of valid ROs associated with the same SSB index in one association pattern period is 3, the number of multi-PRACH transmissions is 4, the least common multiple of 3 and 4 is 12, and the number of valid ROs associated with the same SSB index in one association pattern period is 3. Then, 12 is divided by 3 to obtain 4, so the target value is equal to 4.

[0204] The random access method provided by the embodiment of the present disclosure determines a target value by determining the minimum number of association pattern periods required to satisfy the requirement that the number of remaining ROs after each SSB in one or more association pattern periods is associated with at least one RO group is less than and / or equal to a threshold value, thereby ensuring that multiple PRACH transmissions are successfully completed on the RO groups included in the target number of association pattern periods, and improving transmission efficiency and the success rate of random access.

[0205] In some embodiments, the threshold value is a non-negative integer and includes any of the following:

[0206] The value of the network device configuration;

[0207] Preset fixed value.

[0208] Specifically, the threshold value is a non-negative integer, and the threshold value can be obtained through network side configuration, or can be a preset or predefined fixed value.

[0209] For example, the network side configures a threshold value t for the terminal, and the terminal obtains the target value based on t and preset conditions.

[0210] For another example, the protocol predefines a threshold value as t, and the terminal determines and obtains the target value according to the predefine value.

[0211] In some embodiments, the method further comprises:

[0212] The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0213] Specifically, the terminal or network device determines the threshold value as the number of valid ROs in an association pattern period multiplied by a preset coefficient, or the threshold value as the number of valid ROs included in an RO group multiplied by a preset coefficient.

[0214] The preset coefficient may be configured on the network side or predefined by the protocol.

[0215] For example, the number of valid ROs in an association pattern period is 3. The terminal obtains a preset coefficient of 0.5 through network configuration or protocol pre-definition, and multiplies the preset coefficient by 3 to obtain a product of 1.5, thereby determining that the threshold value can be 1 or 2.

[0216] For another example, an RO group includes 4 valid ROs. The terminal obtains a preset coefficient of 0.5 through network configuration or protocol pre-definition, multiplies the preset coefficient by 4 to obtain a product of 2, and then determines the threshold value to be 2.

[0217] The random access method provided by the embodiment of the present disclosure determines a threshold value through various methods such as network-side configuration, protocol pre-definition, or multiplying an intermediate value by a coefficient, and is used to compare with the remaining RO number to determine a target value, thereby further ensuring the smooth transmission of multiple PRACHs and improving the success rate of random access.

[0218] In some embodiments, the method further comprises:

[0219] The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

[0220] Specifically, since the product of the number of valid ROs included in the associated pattern period and the preset coefficient, or the product of the number of valid ROs included in the RO group and the preset coefficient is not necessarily an integer, it is necessary to round up or down the product to ensure that the threshold value is a non-negative integer.

[0221] In some embodiments, the number of valid ROs included in one RO group is the maximum number of multiple PRACH transmissions allowed on the current Physical Random Access Channel (PRACH) resource.

[0222] For example, when both 2 PRACH transmissions and 4 PRACH transmissions can be performed on the current RACH resource, the number of valid ROs included in an RO group is 4. When only 2 PRACH transmissions are allowed on the current RACH resource, the maximum value of 2 can also be taken as the number of valid ROs included in an RO group.

[0223] The random access methods provided in the above embodiments are further described below through specific examples:

[0224] Example 2:

[0225] FIG3 is a second schematic diagram of the time domain cycle length division of the example scenario provided by the embodiment of the present disclosure. As shown in FIG3 , an association pattern period includes one or more association periods. The figure shows the association periods and association pattern periods from system frame numbers SFN0 to SFN15. There are two ROs in a system frame. The network is configured with two candidate SSBs, namely SSB1 and SSB2. There are two valid ROs in the first SFN, which are associated with SSB1 and SSB2 respectively, thus forming an association period. Similarly, the second SFN constitutes an AP. The third SFN has an invalid RO and needs to form an AP together with the fourth SFN to complete the round-robin mapping of SSB1 and SSB2. As a result, the fourth SFN has one remaining RO, which cannot fully map two SSBs and is no longer used for SSB mapping. Subsequent SFNs repeat the situation of the first four frames. Therefore, the three APs in the first four frames constitute an association pattern period.

[0226] Multi-PRACH transmissions use the same SSB-to-RO mapping pattern as single-PRACH transmissions. Assuming four multi-PRACH transmissions, meaning an RO group contains four valid ROs, the UE can determine the number of associated pattern periods, K, contained in the time domain cycle length as follows.

[0227] The terminal and the base station determine, based on preset conditions, the number of association pattern periods K corresponding to the time domain period length containing a group of RO groups. K is the minimum number of association pattern periods required to ensure that the number of remaining ROs is equal to 0 after determining / configuring at least one RO group for each SSB within one or more association pattern periods. In this example, the threshold value of the remaining RO number is 0. This threshold value can be predefined by the base station and UE through a protocol, or configured by the base station through RRC signaling, and is not limited here.

[0228] There are no remaining ROs, meaning that all valid ROs associated with an SSB index used for single PRACH transmission within K association pattern periods within the time domain period length can be used for multiple PRACH transmission. Therefore, this solution is equivalent to K being the minimum value such that the number of valid ROs associated with the same SSB index within K association pattern periods is an integer multiple of the number of valid ROs contained in an RO group. This is also equivalent to K being the value obtained by dividing the least common multiple of the number of valid ROs associated with the same SSB index within a association pattern period and the number of multiple PRACH transmissions by the number of valid ROs associated with the same SSB index within a association pattern period.

[0229] As shown in (1) of Figure 3, the number of valid ROs associated with the same SSB index within a correlation pattern period is 3, and an RO group contains 4 valid ROs. Therefore, K = LCM(3,4) / 3 = 4, where LCM() represents the function of taking the least common multiple. As shown in (2) of Figure 3, the 12 valid ROs associated with the same SSB index within 4 correlation periods sequentially form 3 RO groups, ensuring that there are no remaining ROs within the time domain period length.

[0230] While determining the number of association periods K, a group of RO groups included in the K association pattern periods can be determined, and the terminal performs multi-PRACH transmission on the RO group associated with the SSB index selected by the terminal.

[0231] Example 3:

[0232] FIG4 is a third schematic diagram of the time domain cycle length division of the example scenario provided by the embodiment of the present disclosure. As shown in FIG4 , an association pattern period includes one or more association periods. The figure shows the association periods and association pattern periods from system frame numbers SFN0 to SFN15. There are two ROs in a system frame. The network is configured with two candidate SSBs, namely SSB1 and SSB2. There are two valid ROs in the first SFN, which are associated with SSB1 and SSB2 respectively, thus forming an association period. Similarly, the second SFN constitutes an AP. The third SFN has an invalid RO and needs to form an AP together with the fourth SFN to complete the round-robin mapping of SSB1 and SSB2. As a result, the fourth SFN has one remaining RO, which cannot fully map two SSBs and is no longer used for SSB mapping. Subsequent SFNs repeat the situation of the first four frames. Therefore, the three APs in the first four frames constitute an association pattern period.

[0233] Multi-PRACH transmissions use the same SSB-to-RO mapping pattern as single-PRACH transmissions. Assuming four multi-PRACH transmissions, meaning an RO group contains four valid ROs, the UE can determine the number of associated pattern periods, K, contained in the time domain cycle length as follows.

[0234] The terminal and the base station determine the number of associated pattern periods K corresponding to the time domain period length containing a group of RO groups through preset conditions, where K is the minimum number of associated pattern periods required to satisfy the requirement that the number of remaining ROs after determining / configuring at least one RO group for each SSB in one or more associated pattern periods is less than and / or equal to the threshold value. In this example, the threshold value is 1, requiring that the number of remaining ROs in K associated pattern periods is less than or equal to 1. The threshold value can be predefined by the base station and the UE through a protocol, or configured by the base station through RRC signaling, or obtained by rounding down the number of valid ROs in an associated pattern period multiplied by a coefficient of 0.5, and there is no restriction here. Taking the coefficient 0.5 as an example, the coefficient can also be determined by network-side configuration or protocol predefinition.

[0235] As shown in (1) in Figure 3, the number of valid ROs associated with the same SSB index in one association pattern period is 3. When K=1, the number of valid ROs associated with the same SSB index in one association pattern period cannot form an RO group and does not meet the requirement. When K=2, the number of valid ROs associated with the same SSB index in two association pattern periods is 6. After the first 4 valid ROs form an RO group, the remaining 2 valid ROs are greater than the threshold value 1, which does not meet the requirement. When K=3, as shown in (2) in Figure 3, the number of valid ROs associated with the same SSB index in three association pattern periods is 9. The first 8 valid ROs form two RO groups in sequence, and the remaining 1 valid RO meets the threshold value requirement. Therefore, the number of association pattern periods included in the time domain period length determined when the threshold value is 1 is 3.

[0236] While determining the number of association periods K, a group of RO groups included in the K association pattern periods can be determined, and the terminal performs multi-PRACH transmission on the RO group associated with the SSB index selected by the terminal.

[0237] The random access method provided by the embodiment of the present disclosure determines the target value by determining the minimum number of association pattern periods required to ensure that the number of remaining ROs after each SSB in one or more association pattern periods is associated with at least one RO group is less than and / or equal to the threshold value, thereby ensuring the smooth transmission of multiple PRACHs and improving the transmission efficiency and the success rate of random access.

[0238] In some embodiments, receiving the target value sent by the network device includes:

[0239] receiving a target value corresponding to the number of transmissions of each multi-physical random access channel sent by the network device through RRC signaling;

[0240] Determine a target value corresponding to the current number of multi-physical random access channel transmissions.

[0241] Specifically, when different multiple PRACH transmission times are transmitted on independent RACH resources, the network device can send the target value corresponding to each multiple PRACH transmission time to the terminal through RRC signaling, that is, the network device configures a target value for each multiple PRACH transmission time, and the multiple target values ​​sent are all positive integers.

[0242] After receiving the target value corresponding to each number of multiple PRACH transmissions sent by the network device through RRC signaling, the terminal further determines a target value to be finally used according to the current number of multiple PRACH transmissions.

[0243] For example, the base station sends a target value corresponding to the number of transmissions of each multi-physical random access channel to the terminal through RRC signaling, where the target value configured for a multi-PRACH transmission with a transmission number of 2 is k1, the target value configured for a multi-PRACH transmission with a transmission number of 4 is k2, and the target value configured for a multi-PRACH transmission with a transmission number of 8 is k3. The terminal receives k1, k2, and k3 sent by the base station through RRC signaling, and determines that the current number of multi-PRACH transmissions is 4, and determines the final target value to be k2, thereby determining a time domain period length of k2 associated pattern periods, and the terminal performs random access on the RO group contained in the time domain period length.

[0244] Optionally, the target value has a value range of greater than or equal to 1 and less than or equal to the corresponding number of multi-physical random access channel transmissions.

[0245] For example, the base station sends the target value corresponding to the number of transmissions of each multi-physical random access channel to the terminal through RRC signaling, where the target value configured for the multi-PRACH transmission with a transmission number of 2 is k1, and the value of k1 is 1 or 2; the target value configured for the multi-PRACH transmission with a transmission number of 4 is k2, and the value range of k2 is greater than or equal to 1 and less than or equal to 4; the target value configured for the multi-PRACH transmission with a transmission number of 8 is k3, and the value range of k3 is greater than or equal to 1 and less than or equal to 8.

[0246] The random access method provided by the embodiment of the present disclosure configures a target value for each type of multi-PRACH transmission number, enabling the terminal to independently determine the target value suitable for the current multi-PRACH transmission, thereby improving the accuracy of determining the time domain cycle length and the effectiveness of RO group division, and improving the success rate of random access.

[0247] In some embodiments, receiving the target value sent by the network device includes:

[0248] A target value corresponding to all the multiple physical random access channel transmission times sent by the receiving network device through RRC signaling.

[0249] Specifically, when different multiple PRACH transmission times are transmitted on a shared RACH resource, the network device may send a target value corresponding to all multiple PRACH transmission times to the terminal via RRC signaling. That is, all multiple PRACH transmission times share the same target value, and the target value is a positive integer. The terminal receives the target value shared by all multiple physical random access channel transmission times sent by the network device via RRC signaling.

[0250] For example, the base station sends a target value K corresponding to all multi-PRACH transmission times to the terminal through RRC signaling. The terminal receives K sent by the base station through RRC signaling, determines a time domain cycle length of K associated pattern cycles, and performs random access on the RO group included in the time domain cycle length.

[0251] Optionally, the target value has a value range of greater than or equal to 1 and less than or equal to the maximum number of transmissions of multiple physical random access channels configured in the current serving cell.

[0252] For example, the base station sends a target value K corresponding to all multiple PRACH transmission times to the terminal through RRC signaling. The maximum value of the multiple PRACH transmission times configured in the current serving cell is 8, and the value range of K is greater than or equal to 1 and less than or equal to 8.

[0253] In the random access method provided by the embodiments of the present disclosure, a network device configures a fixed target value for all multi-PRACH transmission times, enabling a terminal to quickly determine the length of a time domain cycle containing a group of RO groups, thereby reducing the delay in determining the multi-PRACH transmission location, improving transmission efficiency, and increasing the success rate of random access.

[0254] In some embodiments, the method further comprises:

[0255] Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length;

[0256] The number of associated pattern periods included in the time domain period length is determined to be a minimum value between the target value and the maximum number of associated pattern periods.

[0257] Specifically, after the terminal and the network device determine the target value based on preset conditions, or determine the target value through RRC signaling configuration, they also need to compare it with the maximum number of associated pattern periods contained in the upper limit value of the time domain cycle length to ensure that the final determined time domain cycle length does not exceed the upper limit value of the time domain cycle length, that is, the number of associated pattern periods contained in the determined time domain cycle length is the minimum value between the target value and the maximum number of associated pattern periods.

[0258] For example, if the maximum number of associated pattern periods included in the upper limit of the time domain period length is determined to be 2, and the determined target value is 4, then the number of associated pattern periods ultimately included in the time domain period length is 2.

[0259] The random access method provided by the embodiment of the present disclosure further ensures that multiple PRACH transmissions can be carried out smoothly within each time domain cycle length by comparing the target value with the maximum number of associated pattern periods contained in the upper limit value of the time domain cycle length and selecting the smaller value as the number of associated pattern periods contained in the final time domain cycle length.

[0260] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0261] Absolute value;

[0262] An integer number of associated pattern periods.

[0263] Specifically, the upper limit of the time domain cycle length may be an absolute value, such as an absolute value of 160 in milliseconds ms, which means that the maximum time domain cycle length is 160 ms.

[0264] The upper limit of the time domain period length may be an integer number of associated pattern periods, for example, 4 associated pattern periods.

[0265] The random access methods provided in the above embodiments are further described below through specific examples:

[0266] Example 4:

[0267] Figure 5 is a fourth schematic diagram of the time domain cycle length division of the example scenario provided by an embodiment of the present disclosure. As shown in Figure 5, the number of association pattern periods K corresponding to the time domain cycle length containing a group of RO groups is determined by a predefined rule. Multi-PRACH transmission adopts the same SSB-to-RO mapping pattern as single PRACH transmission, one association period is 20ms, and one association pattern period is 80ms.

[0268] Furthermore, in this example, the maximum upper limit of the time domain period length is required to be an absolute value in milliseconds ms, such as 160ms. 160ms contains a maximum of two associated pattern periods, which is recorded as M=2. Therefore, when the target value K determined based on Example 1 is 2, the number of associated pattern periods ultimately included in the time domain period length is determined to be min{M,K}, that is, min{2,2}. When the target value K determined based on Example 2 is 4, the number of associated pattern periods ultimately included in the time domain period length is determined to be min{2,4}. When the target value K determined based on Example 3 is 3, the number of associated pattern periods ultimately included in the time domain period length is determined to be min{2,3}.

[0269] Alternatively, the upper limit of the time domain length can be a value in units of the time domain length of one associated pattern period, such as 4 associated pattern periods, that is, M=4. Therefore, when the target value K determined based on Example 1 is 2, the number of associated pattern periods K ultimately included in the time domain period length is determined to be min{M,K}, that is, min{4,2}. When the target value K determined based on Example 2 is 4, the number of associated pattern periods ultimately included in the time domain period length is determined to be min{4,4}. When the target value K determined based on Example 3 is 3, the number of associated pattern periods ultimately included in the time domain period length is determined to be min{4,3}.

[0270] This example aims to calculate the minimum value between the number of associated pattern periods M included in the upper limit of the time domain period length and the target value K determined based on Examples 1 to 3. The calculation process is irrelevant in which order, and either min{M,K} or min{K,M} is acceptable.

[0271] While determining the number of association periods K, a group of RO groups included in the K association pattern periods can be determined, and the terminal performs multi-PRACH transmission on the RO group associated with the SSB index selected by the terminal.

[0272] Example 5:

[0273] In this example, the number of association pattern cycles K, i.e., the target value, corresponding to the time domain cycle length of a group of RO groups is configured through network-side RRC signaling. Assume that the network side has configured two candidate multi-PRACH transmission times of 2 and 4 for the current serving cell.

[0274] The K configured by the network can be specific to each level / number of transmissions. For example, the network configures K as 2 for two PRACH transmissions and as 3 for four PRACH transmissions. In this embodiment, the value range of K satisfies the requirement of being greater than or equal to 1 and less than or equal to the number of PRACH transmissions. That is, for two PRACH transmissions, the candidate values ​​of K are 1 and 2; for four PRACH transmissions, the candidate values ​​of K include 1, 2, 3, and 4.

[0275] Alternatively, K configured on the network side can be a fixed value, such as K = 3. Then, when the terminal selects 2 PRACH transmissions or 4 PRACH transmissions, the number of associated pattern periods corresponding to the time domain period length containing a group of RO groups is always 3. In this example, the value range of K is greater than or equal to 1 and less than or equal to the maximum number of multiple PRACH transmissions configured in the current serving cell, which is 4. That is, the candidate values ​​of K include 1, 2, 3, and 4.

[0276] Furthermore, similar to Example 4, this embodiment may also require that the time domain cycle length have a maximum upper limit. The time domain length upper limit can be an absolute value in milliseconds (ms), such as 160ms, or it can be a value in units of the time domain length of one association pattern period (e.g., 4 association pattern periods). The number of association pattern periods corresponding to the time domain cycle length of an RO group is ultimately the minimum value between the target value configured on the network side and the number of association pattern periods M included in the maximum upper limit.

[0277] The random access method provided by the embodiments of the present disclosure determines a target value based on preset conditions or configures the target value through a network device. The target value is used to determine the number of associated pattern periods corresponding to the time domain period length containing a group of RO groups. This allows the terminal and the network device to quickly determine the starting position of each multi-PRACH transmission and perform random access on the RO groups contained within the time domain period length, thereby ensuring the smooth transmission of multiple PRACHs and improving the success rate of random access.

[0278] FIG6 is a second flow chart of a random access method provided by an embodiment of the present disclosure. As shown in FIG6 , an embodiment of the present disclosure provides a random access method, the execution subject of which may be a network device, such as a base station. The method includes:

[0279] Step 601: Determine a target value based on a preset condition, or send a target value to a terminal; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups.

[0280] Step 602: Perform random access on the RO group included in the time domain cycle length.

[0281] In some embodiments, sending the target value to the terminal includes:

[0282] A target value corresponding to the number of transmissions of each type of multiple physical random access channel is sent to the terminal through radio resource control RRC signaling; the target value corresponding to the number of transmissions of each type of multiple physical random access channel is a positive integer.

[0283] In some embodiments, the target value corresponding to the number of transmissions of each type of multiple physical random access channel is in a range of greater than or equal to 1 and less than or equal to the corresponding number of transmissions of the multiple physical random access channel.

[0284] In some embodiments, sending the target value to the terminal includes:

[0285] A target value corresponding to the number of transmissions of all multiple physical random access channels is sent to the terminal through RRC signaling; the target value corresponding to the number of transmissions of all multiple physical random access channels is a positive integer.

[0286] In some embodiments, the target value corresponding to the number of transmissions of all multiple physical random access channels is in a range of greater than or equal to 1 and less than or equal to the maximum number of transmissions of the multiple physical random access channel transmissions configured in the current serving cell.

[0287] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0288] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required to ensure that the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to a threshold value; the remaining RO refers to a valid RO that is associated with the SSB and does not belong to any RO group.

[0289] In some embodiments, the threshold value is a preset fixed value; the preset fixed value is a non-negative integer.

[0290] In some embodiments, the method further comprises:

[0291] The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0292] In some embodiments, the method further comprises:

[0293] The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

[0294] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0295] In some embodiments, the method further comprises:

[0296] Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length;

[0297] The number of associated pattern periods included in the time domain period length is determined to be a minimum value between the target value and the maximum number of associated pattern periods.

[0298] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0299] Absolute value;

[0300] An integer number of associated pattern periods.

[0301] Specifically, the random access method provided in the embodiment of the present disclosure is similar in that the network device and the terminal determine the target value. The target value is obtained through preset conditions or through configuration. The above-mentioned embodiment of the random access method in which the execution subject is the terminal can be referred to, and the same technical effect can be achieved. The parts and beneficial effects of this embodiment that are the same as those of the above-mentioned corresponding method embodiments will not be described in detail here.

[0302] FIG7 is a schematic diagram of the structure of a terminal provided by an embodiment of the present disclosure. As shown in FIG7 , the terminal includes a memory 703, a transceiver 701, and a processor 702, wherein:

[0303] The memory 703 is used to store computer programs; the transceiver 701 is used to send and receive data under the control of the processor 702; the processor 702 is used to read the computer program in the memory 703 and perform the following operations:

[0304] Determining a target value based on a preset condition, or receiving a target value sent by a network device; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups;

[0305] Random access is performed on the RO group included in the time domain cycle length.

[0306] In FIG7 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits connected together by one or more processors represented by processor 702 and memory represented by memory 703. The bus architecture may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not described further herein. The bus interface provides an interface. The transceiver 701 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. For different user devices, the user interface 704 may also be an interface capable of connecting external or internal devices as required, and the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0307] The processor 702 is responsible for managing the bus architecture and general processing, and the memory 703 can store data used by the processor 702 when performing operations.

[0308] In some embodiments, the processor 702 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0309] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0310] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0311] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required for the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group to be less than and / or equal to a threshold value; the remaining ROs are valid ROs that are associated with the SSB and do not belong to any RO group.

[0312] In some embodiments, the threshold value is a non-negative integer and includes any of the following:

[0313] The value of the network device configuration;

[0314] Preset fixed value.

[0315] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0316] The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0317] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0318] The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

[0319] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0320] In some embodiments, receiving the target value sent by the network device includes:

[0321] receiving a target value corresponding to the number of transmissions of each multi-physical random access channel sent by the network device through RRC signaling;

[0322] Determine a target value corresponding to the current number of multi-physical random access channel transmissions.

[0323] In some embodiments, receiving the target value sent by the network device includes:

[0324] A target value corresponding to all the multiple physical random access channel transmission times sent by the receiving network device through RRC signaling.

[0325] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0326] Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length;

[0327] The number of associated pattern periods included in the time domain period length is determined to be a minimum value between the target value and the maximum number of associated pattern periods.

[0328] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0329] Absolute value;

[0330] An integer number of associated pattern periods.

[0331] It should be noted here that the above-mentioned terminal provided in the embodiment of the present disclosure can implement all the method steps implemented by the method embodiment in which the execution subject is the terminal, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0332] FIG8 is a schematic diagram of the structure of a network device provided by an embodiment of the present disclosure. As shown in FIG8 , the network device includes a memory 803, a transceiver 801, and a processor 802, wherein:

[0333] The memory 803 is used to store computer programs; the transceiver 801 is used to send and receive data under the control of the processor 802; the processor 802 is used to read the computer program in the memory 803 and perform the following operations:

[0334] Determine a target value based on a preset condition, or send a target value to the terminal; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups;

[0335] Random access is performed on the RO group included in the time domain cycle length.

[0336] In FIG8 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 802 and memory represented by memory 803. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 801 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, or the like. The processor 802 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 802 when performing operations.

[0337] The processor 802 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0338] In some embodiments, sending the target value to the terminal includes:

[0339] A target value corresponding to the number of transmissions of each type of multiple physical random access channel is sent to the terminal through radio resource control RRC signaling; the target value corresponding to the number of transmissions of each type of multiple physical random access channel is a positive integer.

[0340] In some embodiments, the target value corresponding to the number of transmissions of each type of multiple physical random access channel is in a range of greater than or equal to 1 and less than or equal to the corresponding number of transmissions of the multiple physical random access channel.

[0341] In some embodiments, sending the target value to the terminal includes:

[0342] A target value corresponding to the number of transmissions of all multiple physical random access channels is sent to the terminal through RRC signaling; the target value corresponding to the number of transmissions of all multiple physical random access channels is a positive integer.

[0343] In some embodiments, the target value corresponding to the number of transmissions of all multiple physical random access channels is in a range of greater than or equal to 1 and less than or equal to the maximum number of transmissions of the multiple physical random access channel transmissions configured in the current serving cell.

[0344] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0345] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required to ensure that the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to a threshold value; the remaining RO refers to a valid RO that is associated with the SSB and does not belong to any RO group.

[0346] In some embodiments, the threshold value is a preset fixed value; the preset fixed value is a non-negative integer.

[0347] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0348] The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0349] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0350] The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

[0351] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0352] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0353] Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length;

[0354] The number of associated pattern periods included in the time domain period length is determined to be a minimum value between the target value and the maximum number of associated pattern periods.

[0355] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0356] Absolute value;

[0357] An integer number of associated pattern periods.

[0358] Specifically, the above-mentioned network device provided in the embodiment of the present disclosure can implement all the method steps implemented by the method embodiment in which the execution subject is the network device, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0359] FIG9 is a schematic diagram of a random access apparatus according to an embodiment of the present disclosure. As shown in FIG9 , an embodiment of the present disclosure provides a random access apparatus, including a first determination module 901 and a first random access module 902, wherein:

[0360] The first determination module 901 is used to determine a target value based on a preset condition, or receive a target value sent by a network device; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups.

[0361] The first random access module 902 is configured to perform random access on the RO group included in the time domain cycle length.

[0362] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0363] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required to ensure that the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to a threshold value; the remaining RO refers to a valid RO that is associated with the SSB and does not belong to any RO group.

[0364] In some embodiments, the threshold value is a preset fixed value; the preset fixed value is a non-negative integer.

[0365] In some embodiments, the threshold value is a non-negative integer and includes any of the following:

[0366] The value of the network device configuration;

[0367] Preset fixed value.

[0368] In some embodiments, further comprising:

[0369] The third determining module is configured to determine the threshold value according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0370] In some embodiments, further comprising:

[0371] The first rounding module is configured to round up or down the product of the number of valid ROs included in the associated pattern period and the preset coefficient, or the product of the number of valid ROs included in the RO group and the preset coefficient.

[0372] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0373] In some embodiments, the first determining module includes:

[0374] The first receiving unit is configured to receive a target value corresponding to the number of transmissions of each multi-physical random access channel sent by the network device through RRC signaling;

[0375] The first determining unit is configured to determine a target value corresponding to the current number of transmission times of the multiple physical random access channels.

[0376] In some embodiments, the first determining module further includes:

[0377] The second receiving unit is configured to receive a target value corresponding to all multi-physical random access channel transmission times sent by the network device through RRC signaling.

[0378] In some embodiments, further comprising:

[0379] a fourth determining module, configured to determine a maximum number of associated pattern periods included within an upper limit of a time domain period length;

[0380] The fifth determining module is configured to determine that the number of associated pattern periods included in the time domain period length is the minimum value between the target value and the maximum number of associated pattern periods.

[0381] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0382] Absolute value;

[0383] An integer number of associated pattern periods.

[0384] Specifically, the random access device provided in the embodiment of the present disclosure can implement all the method steps implemented in the method embodiment in which the execution subject is a terminal, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0385] FIG10 is a second structural diagram of a random access device provided by an embodiment of the present disclosure. As shown in FIG10 , an embodiment of the present disclosure provides a random access device, including a second determination module 1001 and a second random access module 1002 .

[0386] The first indication module 1001 is used to determine a target value based on a preset condition, or send a target value to the terminal; the target value is used to determine the number of associated pattern periods included in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups.

[0387] The second random access module 1002 is configured to perform random access on the RO group included in the time domain cycle length.

[0388] In some embodiments, the second determining module includes:

[0389] The first sending unit is configured to send a target value corresponding to the number of transmissions of each type of multiple physical random access channel to the terminal through radio resource control RRC signaling; the target value corresponding to the number of transmissions of each type of multiple physical random access channel is a positive integer.

[0390] In some embodiments, the target value corresponding to the number of transmissions of each type of multiple physical random access channel is in a range of greater than or equal to 1 and less than or equal to the corresponding number of transmissions of the multiple physical random access channel.

[0391] In some embodiments, the second determining module further includes:

[0392] The second sending unit is configured to send a target value corresponding to the number of transmissions of all multiple physical random access channels to the terminal through RRC signaling; the target value corresponding to the number of transmissions of all multiple physical random access channels is a positive integer.

[0393] In some embodiments, the target value corresponding to the number of transmissions of all multiple physical random access channels is in a range of greater than or equal to 1 and less than or equal to the maximum number of transmissions of the multiple physical random access channel transmissions configured in the current serving cell.

[0394] In some embodiments, the preset condition includes the target value being a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

[0395] In some embodiments, the preset condition includes a target value that satisfies the minimum number of associated pattern periods required to ensure that the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to a threshold value; the remaining RO refers to a valid RO that is associated with the SSB and does not belong to any RO group.

[0396] In some embodiments, the threshold value is a preset fixed value; the preset fixed value is a non-negative integer.

[0397] In some embodiments, further comprising:

[0398] The sixth determining module is configured to determine the threshold value according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

[0399] In some embodiments, further comprising:

[0400] The second rounding module is configured to round up or down the product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient.

[0401] In some embodiments, the number of valid ROs included in the RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

[0402] In some embodiments, further comprising:

[0403] a seventh determining module, configured to determine a maximum number of associated pattern periods included within an upper limit of a time domain period length;

[0404] An eighth determining module is configured to determine that the number of associated pattern periods included in the time domain period length is a minimum value between the target value and a maximum number of associated pattern periods.

[0405] In some embodiments, the upper limit of the time domain period length includes one or more of the following:

[0406] Absolute value;

[0407] An integer number of associated pattern periods.

[0408] Specifically, the random access device provided in the embodiment of the present disclosure can implement all the method steps implemented in the method embodiment in which the execution subject is a network device, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0409] It should be noted that the division of units / modules in the above-mentioned embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The above-mentioned integrated units may be implemented in the form of hardware or software functional units.

[0410] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the relevant technology or 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, including a number of instructions for enabling 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 method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0411] In some embodiments, a non-transitory readable storage medium is further provided, wherein the non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the random access method provided by the above method embodiments.

[0412] Specifically, the above-mentioned non-transitory readable storage medium provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0413] It should be noted that the non-transitory readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid-state drives (SSDs)), etc.

[0414] In some embodiments, a processor-readable storage medium is further provided, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the random access method provided by the above-mentioned method embodiments.

[0415] Specifically, the processor-readable storage medium provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiments and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0416] In some embodiments, a computer-readable storage medium is further provided, wherein the computer-readable storage medium stores a computer program, and the computer program is used to enable a computer to execute the random access method provided by the above-mentioned method embodiments.

[0417] Specifically, the above-mentioned computer-readable storage medium provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0418] In some embodiments, a communication device is further provided, in which a computer program is stored, and the computer program is used to enable the communication device to execute the random access method provided by the above-mentioned method embodiments.

[0419] Specifically, the above-mentioned communication device provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0420] In some embodiments, a chip product is further provided, wherein a computer program is stored in the chip product, and the computer program is used to enable the chip product to execute the random access method provided by the above-mentioned method embodiments.

[0421] Specifically, the above-mentioned chip product provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0422] It should also be noted that the terms "first," "second," and the like in the embodiments of the present disclosure are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present disclosure can be implemented in an order other than that illustrated or described herein. Furthermore, the terms "first" and "second" generally distinguish objects of the same type, and do not limit the number of objects. For example, the first object can be one or more.

[0423] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0424] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0425] The technical solution provided by the embodiments of the present disclosure can be applicable to a variety of systems, especially 5G systems or 6G systems. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new air interface (NR) system, a 6G system, etc. These various systems include terminal equipment and network equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0426] The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing device connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called User Equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges voice and / or data with a radio access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, but is not limited in the embodiments of the present disclosure.

[0427] The network device involved in the embodiments of the present disclosure may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or may be called another name. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present disclosure may be a base transceiver station (BTS) in the Global System for Mobile communications (GSM) or code division multiple access (CDMA), a network device (NodeB) in wide-band code division multiple access (WCDMA), an evolutionary Node B (eNB or e-NodeB) in the long term evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of the present disclosure. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0428] In the present disclosure, "determine B based on A" means that factor A must be considered when determining B. It is not limited to "determine B based on A alone", and should also include: "determine B based on A and C", "determine B based on A, C and E", "determine C based on A, and further determine B based on C", etc. It can also include using A as a condition for determining B, for example, "when A meets the first condition, use the first method to determine B"; for example, "when A meets the second condition, determine B"; for example, "when A meets the third condition, determine B based on the first parameter", etc. Of course, it can also be a condition that uses A as a factor in determining B, for example, "when A meets the first condition, use the first method to determine C, and further determine B based on C", etc.

[0429] Network devices and terminal devices can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO. It can also use diversity transmission, precoding, or beamforming.

[0430] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0431] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0432] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0433] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0434] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A random access method, applied to a terminal, comprising: Determine a target value based on a preset condition, or receive a target value sent by a network device; The target value is used to determine the number of associated pattern periods contained in the time domain period length of a group of random access channel opportunities RO groups; the group of RO groups includes one or more RO groups; Random access is performed on the RO group included in the time domain cycle length.

2. The random access method according to claim 1, wherein: The preset condition includes that the target value is a minimum value of the number of associated pattern periods required to satisfy that each synchronization signal block SSB in one or more associated pattern periods is associated with at least one RO group.

3. The random access method according to claim 1, wherein: The preset condition includes that the target value is a minimum value of the number of associated pattern periods required to satisfy that the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to the threshold value; the remaining RO is a valid RO associated with the SSB and does not belong to any RO group.

4. The random access method according to claim 3, wherein: The threshold value is a non-negative integer and includes any of the following: The values ​​of network device configuration; Preset fixed value.

5. The random access method according to claim 3, wherein: The method further comprises: The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

6. The random access method according to claim 5, wherein: The method further comprises: The number of valid ROs contained in the association pattern period and the preset coefficient The product, or the product of the number of valid ROs included in the RO group and the preset coefficient is rounded up or down.

7. The random access method according to any one of claims 2 to 5, wherein: The number of valid ROs included in one RO group is the maximum value of the number of multiple PRACH transmissions allowed on the current random access channel RACH resource.

8. The random access method according to claim 1, wherein: The receiving a target value sent by the network device includes: A target value corresponding to the number of transmissions of each multi-physical random access channel sent by a receiving network device through RRC signaling; Determine a target value corresponding to the current number of multi-physical random access channel transmissions.

9. The random access method according to claim 1, wherein: The receiving a target value sent by the network device includes: A target value corresponding to the number of transmissions of all multiple physical random access channels sent by the receiving network device through radio resource control RRC signaling.

10. The random access method according to claim 1, wherein: The method further comprises: Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length; The number of associated pattern periods included in the time domain period length is determined to be the minimum value between the target value and the maximum number of associated pattern periods.

11. The random access method according to claim 10, wherein: The upper limit of the time domain cycle length includes one or more of the following: Absolute value; An integer number of associated pattern periods.

12. A random access method, applied to a network device, comprising: Determine a target value based on a preset condition, or send a target value to a terminal; The target value is used to determine the number of associated pattern periods contained in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups; Random access is performed on the RO group included in the time domain cycle length.

13. The random access method according to claim 12, wherein: The sending of the target value to the terminal includes: A target value corresponding to the number of transmissions of each type of multiple physical random access channel is sent to the terminal through radio resource control RRC signaling; the target value corresponding to the number of transmissions of each type of multiple physical random access channel is a positive integer.

14. The random access method according to claim 13, wherein: The target value corresponding to the number of transmission times of each type of multiple physical random access channel is in a value range of greater than or equal to 1 and less than or equal to the corresponding number of transmission times of the multiple physical random access channel.

15. The random access method according to claim 12, wherein: The sending of the target value to the terminal includes: A target value corresponding to the number of transmissions of all multiple physical random access channels is sent to the terminal through RRC signaling; and the target value corresponding to the number of transmissions of all multiple physical random access channels is a positive integer.

16. The random access method according to claim 15, wherein: The value range of a target value corresponding to the number of transmissions of all multiple physical random access channels is greater than or equal to 1 and less than or equal to the maximum number of transmissions of multiple physical random access channels configured in the current serving cell.

17. The random access method according to claim 12, wherein: The preset condition includes that the target value is a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

18. The random access method according to claim 12, wherein: The preset condition includes a target value that satisfies the minimum value of the number of associated pattern periods required for the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to the threshold value; the remaining RO refers to a valid RO that is associated with the SSB and does not belong to any RO group.

19. The random access method according to claim 18, wherein: The threshold value is a preset fixed value; the preset fixed value is a non-negative integer.

20. The random access method according to claim 18, wherein: The method further comprises: The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

21. The random access method according to claim 20, wherein: The method further comprises: The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

22. The random access method according to any one of claims 17 to 20, wherein: The number of valid ROs included in one RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

23. The random access method according to claim 12, wherein: The method further comprises: Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length; The number of associated pattern periods included in the time domain period length is determined to be the minimum value between the target value and the maximum number of associated pattern periods.

24. The random access method according to claim 23, wherein: The upper limit of the time domain cycle length includes one or more of the following: Absolute value; An integer number of associated pattern periods.

25. A terminal comprising a memory, a transceiver, and a processor; Memory for storing computer programs; a transceiver, for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: Determine a target value based on a preset condition, or receive a target value sent by a network device; the target value is used to determine the number of associated pattern periods contained in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups; Random access is performed on the RO group included in the time domain cycle length.

26. The terminal according to claim 25, wherein: The preset condition includes that the target value is a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

27. The terminal according to claim 25, wherein: The preset condition includes that the target value is a minimum value of the number of associated pattern periods required to satisfy that the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to the threshold value; the remaining RO is a valid RO associated with the SSB and does not belong to any RO group.

28. The terminal according to claim 27, wherein: The threshold value is a non-negative integer and includes any of the following: The values ​​of network device configuration; Preset fixed value.

29. The terminal according to claim 27, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

30. The terminal according to claim 29, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

31. The terminal according to any one of claims 26 to 29, wherein: The number of valid ROs included in one RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

32. The terminal according to claim 25, wherein: The receiving a target value sent by the network device includes: A target value corresponding to the number of transmissions of each multi-physical random access channel sent by a receiving network device through RRC signaling; Determine a target value corresponding to the current number of multi-physical random access channel transmissions.

33. The terminal according to claim 25, wherein: The receiving a target value sent by the network device includes: A target value corresponding to the number of transmissions of all multiple physical random access channels sent by the receiving network device through RRC signaling.

34. The terminal according to claim 25, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length; The number of associated pattern periods included in the time domain period length is determined to be the minimum value between the target value and the maximum number of associated pattern periods.

35. The terminal according to claim 34, wherein: The upper limit of the time domain cycle length includes one or more of the following: Absolute value; An integer number of associated pattern periods.

36. A network device comprising a memory, a transceiver, and a processor; Memory for storing computer programs; a transceiver, for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: Determine a target value based on a preset condition, or send a target value to a terminal; the target value is used to determine the number of associated pattern periods contained in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups; Random access is performed on the RO group included in the time domain cycle length.

37. The network device according to claim 36, wherein: The sending of the target value to the terminal includes: A target value corresponding to the number of transmissions of each type of multiple physical random access channel is sent to the terminal through radio resource control RRC signaling; the target value corresponding to the number of transmissions of each type of multiple physical random access channel is a positive integer.

38. The network device according to claim 37, wherein: The target value corresponding to the number of transmission times of each type of multiple physical random access channel is in a value range of greater than or equal to 1 and less than or equal to the corresponding number of transmission times of the multiple physical random access channel.

39. The network device according to claim 36, wherein: The sending of the target value to the terminal includes: A target value corresponding to the number of transmissions of all multiple physical random access channels is sent to the terminal through RRC signaling; and the target value corresponding to the number of transmissions of all multiple physical random access channels is a positive integer.

40. The network device according to claim 39, wherein: The value range of a target value corresponding to the number of transmissions of all multiple physical random access channels is greater than or equal to 1 and less than or equal to the maximum number of transmissions of multiple physical random access channels configured in the current serving cell.

41. The network device according to claim 36, wherein: The preset condition includes that the target value is a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

42. The network device according to claim 36, wherein: The preset condition includes a target value that satisfies the minimum value of the number of associated pattern periods required for the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to the threshold value; the remaining RO refers to a valid RO that is associated with the SSB and does not belong to any RO group.

43. The network device according to claim 42, wherein: The threshold value is a preset fixed value; the preset fixed value is a non-negative integer.

44. The network device according to claim 42, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

45. The network device according to claim 44, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: The product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient, is rounded up or rounded down.

46. ​​The network device according to any one of claims 41 to 44, wherein: The number of valid ROs included in one RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

47. The network device according to claim 36, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: Determine the maximum number of associated pattern periods contained within the upper limit of the time domain period length; The number of associated pattern periods included in the time domain period length is determined to be the minimum value between the target value and the maximum number of associated pattern periods.

48. The network device according to claim 47, wherein: The upper limit of the time domain cycle length includes one or more of the following: Absolute value; An integer number of associated pattern periods.

49. A random access device, comprising: A first determination module, used to determine a target value based on a preset condition, or to receive a target value sent by a network device; The target value is used to determine the number of associated pattern periods contained in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO Group; The first random access module is used to perform random access on the RO group included in the time domain cycle length.

50. The random access device according to claim 49, wherein: The preset condition includes that the target value is a minimum value of the number of associated pattern periods required to satisfy that each synchronization signal block SSB in one or more associated pattern periods is associated with at least one RO group.

51. The random access device according to claim 49, wherein: The preset condition includes that the target value is a minimum value of the number of associated pattern periods required to satisfy that the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to the threshold value; the remaining RO is a valid RO associated with the SSB and does not belong to any RO group.

52. The random access device according to claim 51, wherein: The threshold value is a non-negative integer and includes any of the following: The values ​​of network device configuration; Preset fixed value.

53. The random access device according to claim 51, wherein: The device further includes a third determining module; the third determining module is configured to: The threshold value is determined according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

54. The random access device according to claim 53, wherein: The device further includes: a first rounding module, configured to round up or down the product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient.

55. The random access device according to any one of claims 50 to 53, wherein: The number of valid ROs included in one RO group is the maximum value of the number of multiple PRACH transmissions allowed on the current random access channel RACH resource.

56. The random access device according to claim 49, wherein: The first determination module includes a first receiving unit and a first determining unit; wherein the first receiving unit is used to receive a target value corresponding to the number of transmissions of each multi-physical random access channel sent by the network device through RRC signaling; The first determining unit is used to determine a target value corresponding to the current number of transmission times of the multiple physical random access channels.

57. The random access device according to claim 49, wherein: The first determination module also includes a second receiving unit, which is used to receive a target value corresponding to the number of transmissions of all multiple physical random access channels sent by the network device through radio resource control RRC signaling.

58. The random access device according to claim 49, wherein: The device further comprises: a fourth determination module, configured to determine a maximum number of associated pattern periods contained within an upper limit value of a time domain period length; The device further includes a fifth determining module, configured to determine that the number of associated pattern periods included in the time domain period length is a minimum value between the target value and a maximum number of associated pattern periods.

59. The random access device according to claim 58, wherein: The upper limit of the time domain cycle length includes one or more of the following: Absolute value; An integer number of associated pattern periods.

60. A random access device, comprising: A second determination module, used to determine a target value based on a preset condition, or to send the target value to a terminal; The target value is used to determine the number of associated pattern periods contained in the time domain period length of a group of RO groups; the group of RO groups includes one or more RO groups; The second random access module is used to perform random access on the RO group included in the time domain cycle length.

61. The random access device according to claim 60, wherein: The second determination module includes a first sending unit, which is used to send a target value corresponding to the number of transmissions of each type of multiple physical random access channel to the terminal through radio resource control RRC signaling; the target value corresponding to the number of transmissions of each type of multiple physical random access channel is a positive integer.

62. The random access device according to claim 61, wherein: The target value corresponding to the number of transmission times of each type of multiple physical random access channel is in a value range of greater than or equal to 1 and less than or equal to the corresponding number of transmission times of the multiple physical random access channel.

63. The random access device according to claim 60, wherein: The second determination module also includes a second sending unit, which is used to send a target value corresponding to the number of transmission times of all multiple physical random access channels to the terminal through RRC signaling; the target value corresponding to the number of transmission times of all multiple physical random access channels is a positive integer.

64. The random access device according to claim 63, wherein: The value range of a target value corresponding to the number of transmissions of all multiple physical random access channels is greater than or equal to 1 and less than or equal to the maximum number of transmissions of multiple physical random access channels configured in the current serving cell.

65. The random access device according to claim 60, wherein: The preset condition includes that the target value is a minimum value of the number of association pattern periods required to satisfy the requirement that each SSB in one or more association pattern periods is associated with at least one RO group.

66. The random access device according to claim 60, wherein: The preset condition includes a target value that satisfies the minimum value of the number of associated pattern periods required for the number of remaining ROs after each SSB in one or more associated pattern periods is associated with at least one RO group is less than and / or equal to the threshold value; the remaining RO refers to a valid RO that is associated with the SSB and does not belong to any RO group.

67. The random access device according to claim 66, wherein: The threshold value is a preset fixed value; the preset fixed value is a non-negative integer.

68. The random access device according to claim 66, wherein: The device further includes: a sixth determination module, configured to determine the threshold value according to the product of the number of valid ROs included in an association pattern period and a preset coefficient, or the product of the number of valid ROs included in an RO group and a preset coefficient; the threshold value is a positive integer.

69. The random access device according to claim 68, wherein: The device further includes: a second rounding module, configured to round up or down the product of the number of valid ROs included in the one association pattern period and the preset coefficient, or the product of the number of valid ROs included in the one RO group and the preset coefficient.

70. The random access device according to any one of claims 65 to 68, wherein: The number of valid ROs included in one RO group is the maximum number of multiple PRACH transmissions allowed on the current RACH resource.

71. The random access device according to claim 60, wherein: The device further comprises: a seventh determination module, configured to determine a maximum number of associated pattern periods contained within an upper limit value of a time domain period length; The device further includes an eighth determination module, configured to determine that the number of associated pattern periods included in the time domain period length is a minimum value between the target value and a maximum number of associated pattern periods.

72. The random access device according to claim 71, wherein: The upper limit of the time domain cycle length includes one or more of the following: Absolute value; An integer number of associated pattern periods.

73. A non-transitory readable storage medium storing a computer program, wherein the computer program is used to cause a processor to execute the random access method according to any one of claims 1 to 11.

74. A non-transitory readable storage medium storing a computer program, wherein the computer program is used to cause a processor to execute the random access method according to any one of claims 12 to 24.

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