Listen before talk method, apparatus and storage medium

Abstract

Embodiments of the present application provide an LBT method, device and storage medium, the method comprising: a terminal receiving first information sent by a network side device; determining whether to perform LBT before sending random access information on a configured RO based on the first information. The LBT method, device and storage medium provided by the embodiments of the present application determine whether to perform LBT before sending random access information on a configured RO according to the first information sent by the network side device when the time domain of the short control signaling exceeds the limit, which ensures the smooth progress of LBT and improves the reliability of the system.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method, apparatus and storage medium for listening before speaking. Background Technology

[0002] In high-frequency technology research, for operations on unlicensed spectrum, a Listen Before Talk (LBT) process is required before signal transmission. However, both the synchronization signal block (SSB) and the Physical Random Access Channel (PRACH) can be exempted from LBT by using short control signaling. But short control signaling requires that the duty cycle of the transmission duration not exceed 10% (e.g., within 100ms, a maximum of 10ms of signal can be transmitted).

[0003] When SSB and PRACH transmissions exceed the 10% limit in the short control signaling time domain, or when the PRACH transmission timing configured by the base station exceeds a 10% duty cycle, LBT cannot be performed, and the system becomes unreliable. Summary of the Invention

[0004] This application provides an LBT method, apparatus, and storage medium to solve the technical problem of poor system reliability in the prior art.

[0005] In a first aspect, embodiments of this application provide a Listen-Before-Speak (LBT) method, including:

[0006] The terminal receives the first information sent by the network-side device;

[0007] Based on the first information, the terminal determines whether to perform LBT before sending random access information on the configured random access channel timing RO.

[0008] Optionally, the first information is binarized information, and the first information is associated with the Physical Random Access Channel (PRACH) configuration index.

[0009] Optionally, if the first information is a first value, then all ROs corresponding to the PRACH configuration index associated with the first information will not perform LBT.

[0010] Optionally, if the first information is a second value, then all ROs corresponding to the PRACH configuration index associated with the first information will perform LBT.

[0011] Optionally, if the network-side device does not configure the value of the first information, the default value of the first information is either the first value or the second value.

[0012] Optionally, if the first information is a binary bitmap information, and the binary bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT.

[0013] Wherein, the first RO corresponds to the first value in the binarized bitmap information, and the second RO corresponds to the second value in the binarized bitmap information.

[0014] Optionally, it also includes:

[0015] The preamble sequence is determined based on the reason for triggering the RACH procedure in the random access channel.

[0016] Optionally, if only one PRACH configuration index is configured, and the first information associated with the PRACH configuration index is a first value, then it further includes:

[0017] Determine the RO to be used for LBT.

[0018] Optionally, the RO used for LBT is determined, including:

[0019] Determine the RO used for LBT based on the instructions from the network-side equipment.

[0020] Optionally, the RO used for LBT is determined, including:

[0021] The RO used for LBT is determined based on pre-configured information.

[0022] Optionally, the first information is a first preset threshold.

[0023] Optionally, determining whether the configured RO performs LBT based on the first information includes:

[0024] Determine the first RO duty cycle for all reference slots corresponding to each PRACH configuration index;

[0025] If the first RO duty cycle is greater than the first preset threshold, then LBT is performed on all ROs of all reference slots corresponding to each PRACH configuration index; otherwise, LBT is not performed on all ROs of all reference slots corresponding to each PRACH configuration index.

[0026] Optionally, determine the first RO duty cycle for all reference slots corresponding to the target PRACH configuration index, including:

[0027] The duty cycle of the first RO is determined based on the configuration period of PRACH and the duration of all ROs within the configuration period.

[0028] Optionally, determining whether the configured RO performs LBT based on the first information includes:

[0029] Determine the second RO duty cycle for the first M reference slots and the third RO duty cycle for the first M+1 reference slots corresponding to each PRACH configuration index; M is a positive integer;

[0030] If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

[0031] Optionally, determining the second RO duty cycle for the first M reference slots corresponding to each PRACH configuration index includes:

[0032] The second RO duty cycle is determined based on the PRACH configuration period and the duration of the RO in the first M reference time slots within the configuration period.

[0033] Secondly, embodiments of this application provide a Listen-Before-Speak (LBT) method, comprising:

[0034] The network-side device sends first information to the terminal; the first information is used for the terminal to determine whether the configured random access channel timing (RO) should perform LBT.

[0035] Optionally, it also includes:

[0036] Send a first instruction to the terminal; the first instruction is used to indicate the RO used to perform LBT.

[0037] Thirdly, embodiments of this application provide a terminal, including a memory, a transceiver, and a processor;

[0038] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0039] Receive the first information sent by the network-side device;

[0040] Based on the first information, determine whether to perform LBT before sending random access information on the configured random access channel timing RO.

[0041] Optionally, the first information is binarized information, and the first information is associated with the Physical Random Access Channel (PRACH) configuration index.

[0042] Optionally, if the first information is a first value, then all ROs corresponding to the PRACH configuration index associated with the first information perform LBT.

[0043] Optionally, if the first information is a second value, then all ROs corresponding to the PRACH configuration index associated with the first information will not perform LBT.

[0044] Optionally, if the network-side device does not configure the value of the first information, the default value of the first information is either the first value or the second value.

[0045] Optionally, if the first information is a binary bitmap information, and the binary bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT.

[0046] Wherein, the first RO corresponds to the first value in the binary bitmap information, and the second RO corresponds to the second value in the binary bitmap information.

[0047] Optionally, it also includes:

[0048] The preamble sequence is determined based on the reason for triggering the RACH procedure in the random access channel.

[0049] Optionally, if only one PRACH configuration index is configured, and the first information associated with the PRACH configuration index is a first value, then it further includes:

[0050] Determine the RO to be used for LBT.

[0051] Optionally, the RO used for LBT is determined, including:

[0052] Determine the RO used for LBT based on the instructions from the network-side equipment.

[0053] Optionally, the RO used for LBT is determined, including:

[0054] The RO used for LBT is determined based on pre-configured information.

[0055] Optionally, the first information is a first preset threshold.

[0056] Optionally, determining whether the configured RO performs LBT based on the first information includes:

[0057] Determine the first RO duty cycle for all reference slots corresponding to each PRACH configuration index;

[0058] If the first RO duty cycle is greater than the first preset threshold, then LBT is performed on all ROs of all reference slots corresponding to each PRACH configuration index; otherwise, LBT is not performed on all ROs of all reference slots corresponding to each PRACH configuration index.

[0059] Optionally, determine the first RO duty cycle for all reference slots corresponding to the target PRACH configuration index, including:

[0060] The duty cycle of the first RO is determined based on the configuration period of PRACH and the duration of all ROs within the configuration period.

[0061] Optionally, determining whether the configured RO performs LBT based on the first information includes:

[0062] Determine the second RO duty cycle for the first M reference slots and the third RO duty cycle for the first M+1 reference slots corresponding to each PRACH configuration index; M is a positive integer;

[0063] If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

[0064] Optionally, determining the second RO duty cycle for the first M reference slots corresponding to each PRACH configuration index includes:

[0065] The second RO duty cycle is determined based on the PRACH configuration period and the duration of the RO in the first M reference time slots within the configuration period.

[0066] Fourthly, embodiments of this application provide a network-side device, including a memory, a transceiver, and a processor;

[0067] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0068] Send first information to the terminal; the first information is used for the terminal to determine whether the configured random access channel timing (RO) should perform LBT.

[0069] Optionally, it also includes:

[0070] Send a first instruction to the terminal; the first instruction is used to indicate the RO used to perform LBT.

[0071] Fifthly, embodiments of this application provide a Listen-Before-Speak (LBT) device, comprising:

[0072] The receiving module is used to receive the first information sent by the network-side device;

[0073] The determination module is used to determine, based on the first information, whether to perform LBT before sending random access information on the configured random access channel timing RO.

[0074] Sixthly, embodiments of this application provide a Listen-Before-Speak (LBT) device, comprising:

[0075] The sending module is used to send first information to the terminal; the first information is used for the terminal to determine whether the configured random access channel timing (RO) should perform LBT.

[0076] In a seventh aspect, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing the processor to perform the steps of the Listen-Before-Speak (LBT) method as described in the first or second aspect above.

[0077] The LBT method, apparatus, and storage medium provided in this application, when the time domain of short control signaling exceeds the limit, determine whether to perform LBT before sending random access information on the configured RO based on the first information sent by the network-side device, thus ensuring the smooth operation of LBT and improving the reliability of the system. Attached Figure Description

[0078] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0079] Figure 1 This is one of the flowcharts of the LBT method provided in the embodiments of this application;

[0080] Figure 2 This is a schematic diagram illustrating different eSCS corresponding to different PRACH configurations provided in the embodiments of this application;

[0081] Figure 3 This is a schematic diagram illustrating different ROs corresponding to different eSCS provided in the embodiments of this application;

[0082] Figure 4 This is a schematic diagram of a RO (Reverse Oscillator) for performing LBT (Low Bit Transformation) provided in an embodiment of this application;

[0083] Figure 5 This is the second flowchart illustrating the LBT method provided in the embodiments of this application;

[0084] Figure 6 This is a schematic diagram of the structure of a terminal provided in an embodiment of this application;

[0085] Figure 7 This is a schematic diagram of the structure of a network-side device provided in an embodiment of this application;

[0086] Figure 8 This is one of the structural schematic diagrams of an LBT device provided in the embodiments of this application;

[0087] Figure 9 This is a second schematic diagram of the structure of an LBT device provided in the embodiments of this application. Detailed Implementation

[0088] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0089] Figure 1 This is one of the flowcharts illustrating the LBT method provided in the embodiments of this application, such as... Figure 1 As shown, this application provides an LBT method, the execution subject of which can be a terminal, such as a mobile phone. The method includes:

[0090] Step 101: The terminal receives the first information sent by the network-side device.

[0091] Specifically, in this embodiment, before sending the preamble, the terminal needs to determine whether the random access channel (RACH) occupancy (RO) for sending the preamble requires LBT (Local Bit Bypass). The specific method for determining whether the RO for sending the preamble requires LBT can be indicated by network-side equipment (e.g., a base station) or determined by the terminal / user equipment (UE).

[0092] The network-side device first sends the first information to the UE.

[0093] The UE receives the first information sent by the network-side device.

[0094] Optionally, the first information can be binarized information, and the first information is associated with the PRACH configuration index.

[0095] For example, for ease of description, the exempt short control signaling transmission (eSCS) indication is introduced here as the first information.

[0096] Optionally, if the first information is a first value, then all ROs corresponding to the PRACH configuration index associated with the first information will not perform LBT.

[0097] For example, if eSCS is the first value (for example, the first value can be TRUE, represented by 1), then the RO in the corresponding time domain belongs to the short control message and is exempt from LBT. That is, it is determined that on the configured RO, the preamble can be sent directly without LBT.

[0098] Optionally, if the first information is a second value, then all ROs corresponding to the PRACH configuration index associated with the first information will perform LBT.

[0099] For example, if eSCS is the second value (for example, the second value can be FALSE, represented by 0), then the RO in the corresponding time domain does not belong to the short control message and cannot be exempted from LBT. That is, it is determined that on the configured RO, the LBT process needs to be performed before sending the preamble.

[0100] Optionally, if the network-side device does not configure the value of the first information, the default value of the first information is either the first value or the second value.

[0101] For example, if the base station does not configure the eSCS value, the default value of the first information is TRUE, and all ROs corresponding to the PRACH configuration index associated with this first information will not perform LBT.

[0102] For example, if the base station does not configure the eSCS value, the default value of the first information is FALSE, and all ROs corresponding to the PRACH configuration index associated with the first information will perform LBT.

[0103] Optionally, the first information can also be represented by bitmap information. If the first information is a binary bitmap information, and the binary bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT; wherein, the first RO corresponds to the first value in the binary bitmap information, and the second RO corresponds to the second value in the binary bitmap information.

[0104] For example, if the eSCS information bitmap information is {1,1,1,1,0,0,0,0,0,0}, and the bitmap information is in units of time slots, then when the preamble is sent on the RO in time slots 1-4, LBT is not performed, but when the preamble is sent on the RO in time slots 5-8, LBT is required.

[0105] Optionally, the first information can also be a first preset threshold. The first preset threshold can be configured according to actual conditions. In this case, the UE determines whether to perform LBT before sending the preamble on the configured RO, and the specific method is described below.

[0106] Step 102: The terminal determines whether to perform LBT before sending random access information on the configured RO based on the first information.

[0107] Specifically, before sending the preamble, the RO (Redirect Access Point) that needs / does not need to perform LBT is indicated by the base station. The first information can be binary information and is associated with the PRACH configuration index. Based on the first information, the terminal determines whether to perform LBT before sending random access information on the configured RO.

[0108] For example, each PRACH configuration message includes an eSCS message, which applies to all ROs in the PRACH configuration message. Specifically, the eSCS message instructs all ROs corresponding to their associated PRACH configuration index to perform LBT, or not to perform LBT at all. The PRACH configuration message can be shown in Table 1.

[0109] Table 1. PRACH Configuration Information Table (Part 1)

[0110]

[0111] It should be noted that: a base station can be configured with one or more PRACH configuration indices. Different PRACH configuration indices can correspond to different preamble formats, and different PRACH configuration indices can correspond to the same preamble format. Different PRACH configuration indices can correspond to a frequency domain sequence length L.

[0112] For example, the configuration parameters of PRACH are shown in Table 2 (some irrelevant parameter items have been removed for the sake of simplicity).

[0113] Table 2 PRACH Configuration Parameter Table (Part 1)

[0114]

[0115] The base station is configured with two PRACH configuration indices. When the PRACH configuration index is 0, the corresponding eSCS information is TRUE; when the PRACH configuration index is 1, the corresponding eSCS information is FALSE. Therefore, when the terminal transmits a preamble on the RO in time slots 1, 2, 5, and 6, LBT is not performed. However, when transmitting a preamble on the RO in time slots 3, 4, 7, and 8, LBT is required, as detailed below. Figure 2 As shown.

[0116] Specifically, before sending the preamble, the ROs that require / do not require LBT are indicated by the base station. The first information can also be binary bitmap information, and the first information is associated with the PRACH configuration index. The terminal determines whether to perform LBT before sending random access information on the configured ROs based on the first information.

[0117] For example, each PRACH message includes an eSCS message indicating that the information applies to a portion of the RO in the PRACH message. PRACH configuration information can be shown in Table 3.

[0118] Table 3. PRACH Configuration Information Table (Part Two)

[0119]

[0120]

[0121] In Table 3, b(0), b(1), b(2)...b(K) indicate whether the corresponding time-domain RO belongs to a short control message. K is the maximum index value of the time-domain RO, and the unit can be a subframe (1ms), or a reference time slot (slot length of SCS = 60KHz or 120KHz), or a time slot (14 symbols), or a preamble length (such as 2 symbols).

[0122] It should be noted that: a base station can be configured with one or more PRACH configuration indices. Different PRACH configuration indices can correspond to different preamble formats, and different PRACH configuration indices can correspond to the same preamble format. Different PRACH configuration indices can correspond to a frequency domain sequence length L.

[0123] For example, the configuration parameters of PRACH are shown in Table 4 (some irrelevant parameter items have been removed for the sake of simplicity).

[0124] Table 4. PRACH Configuration Parameters (Part Two)

[0125]

[0126] The base station is configured with two PRACH configuration indices. When the PRACH configuration index is 3, the corresponding eSCS information bitmap is {1,1,1,1,0,0,0,0,0,0}, where 1 represents TRUE and 0 represents FALSE. The bitmap information is in units of time slots. Therefore, when the terminal transmits preamble on the RO within time slots 1, 2, 3, and 4, LBT is not performed. When transmitting preamble on the RO within time slots 5, 6, 7, and 8, LBT is required. Specifically, as follows... Figure 3 As shown.

[0127] The LBT method provided in this application determines whether to perform LBT before sending random access information on the configured RO based on the first information sent by the network-side device when the time domain of the short control signaling exceeds the limit, thus ensuring the smooth execution of LBT and improving the reliability of the system.

[0128] Optionally, when multiple PRACH configuration indices are configured and the eSCS is different, the terminal determines which PRACH configuration index to use for the RO according to any of the following methods.

[0129] 1. Determined using the random number generation process.

[0130] A numerical threshold can be set (e.g., random-0.7). The terminal generates a random number x (ranging from 0 to 1). When x is greater than random-0.7, the PRACH corresponding to TRUE is configured with an index using eSCS; otherwise, the PRACH corresponding to FALSE is configured with an index using eSCS.

[0131] 2. Determined based on the transmission power of the preamble.

[0132] A numerical threshold can be set (e.g., at least one of thr-L139dBm, thr-L571dBm, thr-L1151dBm), and the terminal calculates (the specific calculation method will not be elaborated in this article) the power x of the transmitted preanble.

[0133] When x is less than thr-L139dBm, use the PRACH configuration index with L equal to 139.

[0134] When x is greater than thr-L139dBm and less than thr-L571dBm, use the PRACH configuration index with L equal to 571.

[0135] When x is greater than thr-L571dBm and less than thr-L1511dBm, use the PRACH configuration index with L equal to 1151.

[0136] Optionally, it also includes:

[0137] The preamble sequence is determined based on the reason for triggering the RACH procedure in the random access channel.

[0138] Specifically, when a PRACH configuration index is configured and the eSCS of different time domain ROs are different, the terminal determines whether to use the time domain RO with eSCS set to TRUE or the time domain RO with eSCS set to FALSE based on any of the following methods.

[0139] 1. Determined using the random number generation process.

[0140] A numerical threshold (e.g., random-0.7) can be set. The terminal generates a random number x (ranging from 0 to 1). When x is greater than random-0.7, the time domain RO with eSCS set to TRUE is used; otherwise, the time domain RO with eSCS set to FALSE is used.

[0141] 2. Determined based on the factors that trigger the RACH process.

[0142] For example, the RACH procedure initiated in response to a paging call from a base station or a radio link failure uses a time-domain RO with eSCS set to TRUE, while others use a time-domain RO with eSCS set to FALSE.

[0143] For time-domain ROs configured with eSCS as FASLE, the terminal needs to perform LBT before sending the preamble, and the LBT can be performed on some ROs.

[0144] Optionally, if only one PRACH configuration index is configured, and the first information associated with the PRACH configuration index is a first value, then it further includes:

[0145] Determine the RO to be used for LBT.

[0146] Specifically, when the eSCS corresponding to a PRACH configuration index is FALSE, idle time needs to be reserved for the terminal to perform LBT. During this idle time, neither the base station nor the terminal transmits any signals. The idle time for performing LBT can use the time of one or more time-domain ROs. For example... Figure 4 As shown.

[0147] To allow sufficient time for LBT (Local Time Bypass) while preventing other terminals in the cell from sending data or signals (which would affect the LBT result), this application embodiment employs a method of masking some ROs (time domain ROs). Although these ROs are used by the system for PRACH by the terminals, they cannot send preambles for LBT configurations. In other words, when calculating valid ROs, the terminal removes the time domain ROs used for LBT, because these ROs are only used by the terminal to perform LBT.

[0148] Optionally, the RO used for LBT is determined, including:

[0149] Determine the RO used for LBT based on the instructions from the network-side equipment.

[0150] Optionally, the RO used for LBT is determined, including:

[0151] The RO used for LBT is determined based on pre-configured information.

[0152] The RO used for LBT can be determined through base station configuration or protocol.

[0153] like Figure 4 As shown, the RO used for LBT can be configured using the following two methods.

[0154] Option 1: Allocate one or more ROs based on RO / time slot groups for LBT.

[0155] In this scheme, multiple ROs or time slot groups share the RO time used for LBT. All UEs that are prepared to send a preamble on this RO / time slot group perform LBT during the RO time for LBT and determine whether they can send the preamble based on the execution result of LBT. Figure 4 The time slots are grouped into 4 groups, for a total of 16 ROs (time domains). On the first RO, the terminal cannot send preambles but is used to perform LBT. On the remaining ROs, the terminal can send preambles.

[0156] Option 2: Allocate one or more ROs based on a single RO (time domain) for LBT.

[0157] In this scheme, an idle time for LBT needs to be reserved before each RO to prepare for UEs to send preamble on that RO. LBT is performed during the RO time for LBT, and the result of LBT execution determines whether preamble can be sent. Figure 4The base station is configured with 4 ROs (time domains) in each time slot. On the 1st and 3rd ROs, the terminal cannot send preambles but uses them to perform LBT (Local Bit Transmission). On the 2nd and 4th ROs, the terminal can send preambles.

[0158] The LBT method provided in this application provides idle time for the terminal to execute LBT when the eSCS corresponding to a PRACH configuration index is FALSE, thereby further improving the reliability of the system.

[0159] Optionally, the first information is a first preset threshold. Determining whether the configured RO performs LBT based on the first information includes:

[0160] Based on the configuration period of each PRACH and the duration of all ROs within that configuration period, determine the first RO duty cycle for all reference slots corresponding to each PRACH configuration index.

[0161] If the first RO duty cycle is greater than the first preset threshold, then LBT is performed on all ROs of all reference slots corresponding to each PRACH configuration index; otherwise, LBT is not performed on all ROs of all reference slots corresponding to each PRACH configuration index.

[0162] Specifically, the base station first configures a first preset threshold (e.g., 5%). The first preset threshold can be configured according to the actual situation. The first preset threshold can be configured through dedicated signaling or through broadcast messages.

[0163] The threshold information configured by the base station indicates the threshold of short control messages available for PRACH, which is used by the UE to calculate the eSCS information of RO in the PRACH information.

[0164] The terminal calculates the eSCS value based on the PRACH configuration information and threshold sent by the base station.

[0165] The calculation method for this step is as follows:

[0166] Calculate the duty ratio (duty_ratio) corresponding to the PRACH configuration index. Duty_ratio represents the time-domain duration of the configured RO within a certain period. The formula for calculating duty_ratio is as follows:

[0167] duty_ratio=total_RO_duration / Period

[0168] Here, Period is the configuration period for PRACH, in milliseconds. Values ​​can be 10ms, 20ms, 40ms, 80ms, or 160ms, and the specific value can be configured according to actual needs. total_RO_duration is the duration of all ROs within the configuration period.

[0169] If duty_ratio is greater than threshold, then the eSCS of the RO corresponding to the PRACH configuration index is FALSE; otherwise, it is TRUE.

[0170] For example, the configuration parameters of PRACH are shown in Table 5 (some irrelevant parameter items have been removed for the sake of simplicity). The subcarrier spacing of PRACH is 120KHz, and the first preset threshold is 5%.

[0171] Table 5. PRACH Configuration Parameters (Part 3)

[0172]

[0173] The base station is configured with two PRACH configuration indices, where the PRACH configuration index of cell A is 0 and the PRACH configuration index of cell B is 1.

[0174] For the configuration of cell A (PRACH configuration index is 0), the following can be calculated based on the configuration in Table 5:

[0175] Period = 20ms;

[0176] total_RO_duration = number of reference slots with ROs * number of reference slots with ROs * number of time-domain ROs in one slot * RO duration * duration of one OFDM symbol

[0177] =3*2*6*2*0.0089ms

[0178] =0.64ms;

[0179] duty_ratio=total_RO_duration / Period

[0180] =3.2%;

[0181] If the value of duty_ratio is less than 5%, then the eSCS information is TRUE when the PRACH configuration index is 0. The ROs of all reference slots corresponding to a PRACH configuration index of 0 will not perform LBT.

[0182] For the configuration of cell B (PRACH configuration index is 1), the following can be calculated based on the configuration in Table 5:

[0183] Period = 20ms;

[0184] total_RO_duration = number of reference slots with RO * number of reference slots with RO * number of time-domain ROs in one slot * RO duration * duration of one OFDM symbol

[0185] = 6*2*6*2*0.0089ms

[0186] =1.28ms;

[0187] duty_ratio=total_RO_duration / Period

[0188] =6.4%;

[0189] If the value of duty_ratio is greater than 5%, then it can be determined that the eSCS information is FALSE when the PRACH configuration index is 1. All reference slots corresponding to PRACH configuration index 1 will have their ROs perform LBT.

[0190] It should be noted that in this embodiment, the base station directly indicates the threshold for short control messages available for PRACH. This means the base station deducts other signals transmitted using the short control message rule (e.g., SSB signals), leaving the remaining signals usable for PRACH as a threshold for short control messages. The terminal can also calculate the threshold value itself (by calculating the duty cycle (duty_ratio) of the signals already transmitted using the short control message rule, and subtracting 10% from the duty_ratio). For example, the terminal calculates the SSB transmission period based on the base station's instruction, along with the number and duration of SSBs transmitted using the short control message rule within that period, calculates the SSB's duty_ratio, and subtracting 10% from the duty_ratio yields the threshold value.

[0191] The LBT method provided in this application determines whether to perform LBT before sending random access information on the configured RO based on the first information sent by the network-side device when the time domain of the short control signaling exceeds the limit, thus ensuring the smooth execution of LBT and improving the reliability of the system.

[0192] Optionally, determining whether the configured RO performs LBT based on the first information includes:

[0193] The second RO duty cycle of the first M reference time slots corresponding to each PRACH configuration index is determined based on the configuration period of each PRACH and the duration of the RO of the first M reference time slots within that configuration period. The third RO duty cycle of the first M+1 reference time slots corresponding to each PRACH configuration index is determined based on the configuration period of each PRACH and the duration of the RO of the first M+1 reference time slots within that configuration period. M is a positive integer.

[0194] If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

[0195] Specifically, the station first configures a first preset threshold (e.g., 5%). This first preset threshold can be configured according to actual conditions. It can be configured via dedicated signaling or via broadcast messages.

[0196] The threshold information configured by the base station indicates the threshold of short control messages available for PRACH, which is used by the UE to calculate the eSCS information of RO in the PRACH information.

[0197] The terminal calculates the eSCS value based on the PRACH configuration information and threshold sent by the base station.

[0198] Assuming that the reference time slot is used as the unit, the calculation method for the eSCS of RO in each reference time slot is as follows:

[0199] The RO duty ratio (duty_ratio) for the first M / M+1 reference time slots within the PRACH configuration period is calculated using the following formula:

[0200] duty_ratio=total_RO_duration / Period

[0201] Where Period is the configuration period for PRACH, in milliseconds, and its value can be 10ms, 20ms, 40ms, 80ms, or 160ms. The specific value can be configured according to actual needs. total_RO_duration is the duration of all ROs within the configuration period, which is the duration of all ROs in the first M reference slots or the M+1 reference slots.

[0202] If the following conditions are met:

[0203] The duty_ratio of the RO in M ​​reference time slots is less than or equal to the threshold.

[0204] The duty ratio of the RO in M+1 reference time slots is greater than the threshold.

[0205] The terminal then determines that the eSCS information of the RO in the first M reference time slots corresponding to the PRACH configuration index is TRUE, and the eSCS information of the RO in the time slots of other reference time slots is FALSE.

[0206] For example, the configuration parameters of PRACH are shown in Table 6 (some irrelevant parameter items have been removed for the sake of simplicity). The subcarrier spacing of PRACH is 120KHz, and the first preset threshold is 5%.

[0207] Table 6. PRACH Configuration Parameters (Part 4)

[0208]

[0209] The base station is configured with two PRACH configuration indices, where the PRACH configuration index of cell A is 0 and the PRACH configuration index of cell B is 1.

[0210] For the configuration of cell B (PRACH configuration index is 1), the following can be calculated based on the configuration in Table 6:

[0211] Period = 20ms;

[0212] When M=4, total_RO_duration = number of reference slots with RO * number of reference slots with RO * number of time-domain ROs within one slot * RO duration * duration of one OFDM symbol

[0213] = 4*2*6*2*0.0089ms

[0214] =0.85ms;

[0215] duty_ratio=total_RO_duration / Period

[0216] =4.26%;

[0217] At this point, duty_ratio is less than 5%.

[0218] When M=5, total_RO_duration = number of reference slots with RO * number of reference slots with RO * number of time-domain ROs within one slot * RO duration * duration of one OFDM symbol

[0219] = 5*2*6*2*0.0089ms

[0220] =1.06ms;

[0221] duty_ratio=total_RO_duration / Period

[0222] =5.36%;

[0223] At this point, duty_ratio is greater than 5%.

[0224] Therefore, during the configuration period of PRACH with configuration index 1, the eSCS information of ROs in reference time slots 1, 3, 4, and 7 is TRUE, and ROs in reference time slots 1, 3, 4, and 7 do not perform LBT. The eSCS information of ROs in other reference time slots is FALSE, and ROs in other reference time slots perform LBT.

[0225] The LBT method provided in this application determines whether to perform LBT before sending random access information on the configured RO based on the first information sent by the network-side device when the time domain of the short control signaling exceeds the limit, thus ensuring the smooth execution of LBT and improving the reliability of the system.

[0226] Figure 5 This is a second flowchart illustrating the LBT method provided in the embodiments of this application, as shown below. Figure 5 As shown, this application provides an LBT method, the execution subject of which can be a network-side device, such as a base station. The method includes:

[0227] Step 501: The network-side device sends first information to the terminal; the first information is used for the terminal to determine whether the configured random access channel timing (RO) should be executed (LBT).

[0228] Optionally, it also includes:

[0229] Send a first instruction to the terminal; the first instruction is used to indicate the RO used to perform LBT.

[0230] Specifically, the LBT method provided in this application embodiment can refer to the above-described LBT method embodiment with the terminal as the execution subject, and can achieve the same technical effect. Here, the parts and beneficial effects that are the same as those in the corresponding method embodiments described above will not be described in detail.

[0231] Figure 6 This is a schematic diagram of the structure of a terminal provided in an embodiment of this application, such as... Figure 6 As shown, the terminal includes a memory 620, a transceiver 600, and a processor 610.

[0232] The memory 620 is used to store computer programs; the transceiver 600 is used to send and receive data under the control of the processor 610; the processor 610 is used to read the computer program in the memory 620 and perform the following operations:

[0233] Receive the first information sent by the network-side device;

[0234] Based on the first information, determine whether to perform LBT before sending random access information on the configured random access channel timing RO.

[0235] Specifically, transceiver 600 is used to receive and send data under the control of processor 610.

[0236] Among them, Figure 6 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 610 and memory represented by memory 620 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 600 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 630 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0237] The processor 610 is responsible for managing the bus architecture and general processing, while the memory 620 can store the data used by the processor 610 when performing operations.

[0238] Alternatively, the processor 610 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0239] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0240] Optionally, the first information is binarized information, and the first information is associated with the Physical Random Access Channel (PRACH) configuration index.

[0241] Optionally, if the first information is a first value, then all ROs corresponding to the PRACH configuration index associated with the first information will not perform LBT.

[0242] Optionally, if the first information is a second value, then all ROs corresponding to the PRACH configuration index associated with the first information will perform LBT.

[0243] Optionally, if the network-side device does not configure the value of the first information, the default value of the first information is either the first value or the second value.

[0244] Optionally, if the first information is a binary bitmap information, and the binary bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT.

[0245] Wherein, the first RO corresponds to the first value in the binary bitmap information, and the second RO corresponds to the second value in the binary bitmap information.

[0246] Optionally, it also includes:

[0247] The preamble sequence is determined based on the reason for triggering the RACH procedure in the random access channel.

[0248] Optionally, if only one PRACH configuration index is configured, and the first information associated with the PRACH configuration index is a first value, then it further includes:

[0249] Determine the RO to be used for LBT.

[0250] Optionally, the RO used for LBT is determined, including:

[0251] Determine the RO used for LBT based on the instructions from the network-side equipment.

[0252] Optionally, the RO used for LBT is determined, including:

[0253] The RO used for LBT is determined based on pre-configured information.

[0254] Optionally, the first information is a first preset threshold.

[0255] Optionally, determining whether the configured RO performs LBT based on the first information includes:

[0256] Determine the first RO duty cycle for all reference slots corresponding to each PRACH configuration index;

[0257] If the first RO duty cycle is greater than the first preset threshold, then LBT is performed on all ROs of all reference slots corresponding to each PRACH configuration index; otherwise, LBT is not performed on all ROs of all reference slots corresponding to each PRACH configuration index.

[0258] Optionally, determine the first RO duty cycle for all reference slots corresponding to the target PRACH configuration index, including:

[0259] The duty cycle of the first RO is determined based on the configuration period of PRACH and the duration of all ROs within the configuration period.

[0260] Optionally, determining whether the configured RO performs LBT based on the first information includes:

[0261] Determine the second RO duty cycle for the first M reference slots and the third RO duty cycle for the first M+1 reference slots corresponding to each PRACH configuration index; M is a positive integer;

[0262] If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

[0263] Optionally, determining the second RO duty cycle for the first M reference slots corresponding to each PRACH configuration index includes:

[0264] The second RO duty cycle is determined based on the PRACH configuration period and the duration of the RO in the first M reference time slots within the configuration period.

[0265] It should be noted that the terminal provided in this application embodiment can implement all the method steps implemented by the method embodiment with the terminal as the execution subject, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0266] Figure 7 This is a schematic diagram of the structure of a network-side device provided in an embodiment of this application, such as... Figure 7 As shown, the network-side device includes a memory 720, a transceiver 700, and a processor 710.

[0267] The memory 720 is used to store computer programs; the transceiver 700 is used to send and receive data under the control of the processor 710; the processor 710 is used to read the computer program in the memory 720 and perform the following operations:

[0268] Send first information to the terminal; the first information is used for the terminal to determine whether the configured random access channel timing (RO) should perform LBT.

[0269] Specifically, the transceiver 700 is used to receive and send data under the control of the processor 710.

[0270] Among them, Figure 7 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 710) and memory (memory 720). The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 700 can be multiple elements, including transmitters and receivers, providing units for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. The processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 710 during operation.

[0271] The processor 710 can 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 can also adopt a multi-core architecture.

[0272] Optionally, it also includes:

[0273] Send a first instruction to the terminal; the first instruction is used to indicate the RO used to perform LBT.

[0274] Specifically, the network-side device provided in this application embodiment can implement all the method steps implemented by the method embodiment with the network-side device as the execution subject, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0275] Figure 8This is one of the structural schematic diagrams of an LBT device provided in the embodiments of this application, such as... Figure 8 As shown, this application provides an LBT device, including a receiving module 801 and a determining module 802, wherein:

[0276] The receiving module 801 is used to receive the first information sent by the network-side device; the determining module 802 is used to determine, based on the first information, whether to perform LBT before sending random access information on the configured random access channel timing RO.

[0277] Optionally, the first information is binarized information, and the first information is associated with the Physical Random Access Channel (PRACH) configuration index.

[0278] Optionally, if the first information is a first value, then all ROs corresponding to the PRACH configuration index associated with the first information will not perform LBT.

[0279] Optionally, if the first information is a second value, then all ROs corresponding to the PRACH configuration index associated with the first information will perform LBT.

[0280] Optionally, if the network-side device does not configure the value of the first information, the default value of the first information is either the first value or the second value.

[0281] Optionally, if the first information is a binary bitmap information, and the binary bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT.

[0282] Wherein, the first RO corresponds to the first value in the binarized bitmap information, and the second RO corresponds to the second value in the binarized bitmap information.

[0283] Optionally, it also includes a second determining module;

[0284] The second determining module is used to determine whether to use the first RO or the second RO to send the preamble sequence based on the reason for triggering the random access channel RACH process.

[0285] Optionally, if only one PRACH configuration index is configured, and the first information associated with the PRACH configuration index is a first value, then a third determining module is also included;

[0286] The third determining module is used to determine the RO used for LBT.

[0287] Optionally, the third determining module includes the first determining unit;

[0288] The first determining unit is used to determine the RO for performing LBT based on the instructions of the network-side device.

[0289] Optionally, the third determining module includes the second determining unit;

[0290] The second determining unit is used to determine the RO for performing LBT based on pre-configured information.

[0291] Optionally, the first information is a first preset threshold.

[0292] Optionally, the determining module includes a first determining submodule;

[0293] The first determining submodule is used to determine the first RO duty cycle of all reference slots corresponding to each PRACH configuration index;

[0294] If the first RO duty cycle is greater than the first preset threshold, then LBT is performed on all ROs of all reference slots corresponding to each PRACH configuration index; otherwise, LBT is not performed on all ROs of all reference slots corresponding to each PRACH configuration index.

[0295] Optionally, the first determining submodule includes a third determining unit;

[0296] The third determining unit is used to determine the duty cycle of the first RO based on the configuration period of PRACH and the duration of all ROs within the configuration period.

[0297] Optionally, the determining module includes a second determining submodule;

[0298] The second determining submodule is used to determine the second RO duty cycle of the first M reference time slots and the third RO duty cycle of the first M+1 reference time slots corresponding to each PRACH configuration index; M is a positive integer;

[0299] If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

[0300] Optionally, the second determining submodule includes a fourth determining unit;

[0301] The fourth determining unit is used to determine the second RO duty cycle based on the PRACH configuration period and the duration of the RO in the first M reference time slots within the configuration period.

[0302] Specifically, the LBT device provided in this application embodiment can implement all the method steps implemented by the method embodiment with the terminal as the execution subject, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0303] Figure 9 This is a second schematic diagram of the structure of an LBT device provided in the embodiments of this application, as shown below. Figure 9 As shown in the figure, this application provides an LBT device, including a transmitting module 901.

[0304] The sending module 901 is used to send first information to the terminal; the first information is used for the terminal to determine whether the configured random access channel timing (RO) should be executed (LBT).

[0305] Optionally, a second transmitting module may also be included;

[0306] The second sending module is used to send a first instruction to the terminal; the first instruction is used to indicate the RO used for LBT.

[0307] Specifically, the LBT device provided in this application embodiment can implement all the method steps implemented by the method embodiment where the execution subject is a network-side device, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0308] It should be noted that the division of units / modules in the above embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0309] If the integrated unit is implemented as 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 this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0310] Optionally, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing the processor to execute the methods provided in the above embodiments, including:

[0311] Receive first information sent by the network-side device; based on the first information, determine whether to perform LBT before sending random access information on the configured random access channel timing RO.

[0312] Or include:

[0313] Send first information to the terminal; the first information is used for the terminal to determine whether the configured random access channel timing (RO) should perform LBT.

[0314] It should be noted that the processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0315] It should also be noted that the terms "first," "second," etc., used in the embodiments of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, and the number of objects is not limited. For example, the first object can be one or more.

[0316] In the embodiments of this application, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0317] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0318] The technical solutions provided in this application can be applied to various systems, especially 5G systems. For example, applicable systems include Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Long Term Evolution Advanced (LTE-A), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), and 5G New Radio (NR). All of these systems include terminal equipment and network equipment. The systems may also include a core network component, such as Evolved Packet System (EPS) and 5G system (5GS).

[0319] The terminal devices involved in the embodiments of this application can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in a 5G system, a terminal device can be called User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but is not limited to these terms in the embodiments of this application.

[0320] The network device involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a NodeB in a Wide-band Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a 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 this application. In some network structures, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may be geographically separated.

[0321] 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 multiple-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, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0322] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0323] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0324] 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 particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0325] These processors can execute instructions that can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0326] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A Listen-Then-Speak (LBT) method, characterized in that, include: The terminal receives the first information sent by the network-side device; Based on the first information, the terminal determines whether to perform LBT before sending random access information on the configured random access channel timing RO. Wherein, the first information is binarized information, and the first information is associated with the Physical Random Access Channel (PRACH) configuration index; and if the first information is binarized bitmap information, and the binarized bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT. The first RO corresponds to a first value in the binary bitmap information, and the second RO corresponds to a second value in the binary bitmap information; or... The first information is a first preset threshold; Determining whether the configured RO performs LBT based on the first information includes: Determine the second RO duty cycle for the first M reference slots and the third RO duty cycle for the first M+1 reference slots corresponding to each PRACH configuration index; M is a positive integer; If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

2. The LBT method according to claim 1, characterized in that, Also includes: The preamble sequence is determined based on the reason for triggering the RACH procedure in the random access channel.

3. The LBT method according to claim 1, characterized in that, Determine the second RO duty cycle for the first M reference slots corresponding to each PRACH configuration index, including: The second RO duty cycle is determined based on the PRACH configuration period and the duration of the RO in the first M reference time slots within the configuration period.

4. A Listen-Then-Speak (LBT) method, characterized in that, include: The network-side device sends the first information to the terminal; The first information is used by the terminal to determine whether the configured random access channel (RO) should perform LBT. Wherein, the first information is binarized information, and the first information is associated with the Physical Random Access Channel (PRACH) configuration index; and if the first information is binarized bitmap information, and the binarized bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT. The first RO corresponds to a first value in the binary bitmap information, and the second RO corresponds to a second value in the binary bitmap information; or... The first information is a first preset threshold; Determining whether the configured RO performs LBT based on the first information includes: Determine the second RO duty cycle for the first M reference slots and the third RO duty cycle for the first M+1 reference slots corresponding to each PRACH configuration index; M is a positive integer; If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

5. The LBT method according to claim 4, characterized in that, Also includes: Send a first instruction to the terminal; the first instruction is used to indicate the RO used to perform LBT.

6. A terminal, characterized in that, Includes memory, transceiver, and processor; The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor. Processor, configured to read the computer program in the memory and perform the following operations: Receive the first information sent by the network-side device; Based on the first information, determine whether to perform LBT before sending random access information on the configured random access channel timing RO. Wherein, the first information is binarized information, and the first information is associated with the Physical Random Access Channel (PRACH) configuration index; and if the first information is binarized bitmap information, and the binarized bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT. The first RO corresponds to a first value in the binary bitmap information, and the second RO corresponds to a second value in the binary bitmap information; or... The first information is a first preset threshold; Determining whether the configured RO performs LBT based on the first information includes: Determine the second RO duty cycle for the first M reference slots and the third RO duty cycle for the first M+1 reference slots corresponding to each PRACH configuration index; M is a positive integer; If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

7. The terminal according to claim 6, characterized in that, Also includes: The preamble sequence is determined based on the reason for triggering the RACH procedure in the random access channel.

8. The terminal according to claim 6, characterized in that, Determine the second RO duty cycle for the first M reference slots corresponding to each PRACH configuration index, including: The second RO duty cycle is determined based on the PRACH configuration period and the duration of the RO in the first M reference time slots within the configuration period.

9. A network-side device, characterized in that, Includes memory, transceiver, and processor; A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Send first information to the terminal; the first information is used for the terminal to determine whether the configured random access channel timing (RO) should perform LBT. Wherein, the first information is binarized information, and the first information is associated with the Physical Random Access Channel (PRACH) configuration index; and if the first information is binarized bitmap information, and the binarized bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT. The first RO corresponds to a first value in the binary bitmap information, and the second RO corresponds to a second value in the binary bitmap information; or... The first information is a first preset threshold; Determining whether the configured RO performs LBT based on the first information includes: Determine the second RO duty cycle for the first M reference slots and the third RO duty cycle for the first M+1 reference slots corresponding to each PRACH configuration index; M is a positive integer; If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

10. The network-side device according to claim 9, characterized in that, Also includes: Send a first instruction to the terminal; the first instruction is used to indicate the RO used to perform LBT.

11. A Listen-Then-Speak (LBT) device, characterized in that, include: The receiving module is used to receive the first information sent by the network-side device; The determination module is used to determine, based on the first information, whether to perform LBT before sending random access information on the configured random access channel timing RO; Wherein, the first information is binarized information, and the first information is associated with the Physical Random Access Channel (PRACH) configuration index; and if the first information is binarized bitmap information, and the binarized bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT. The first RO corresponds to a first value in the binary bitmap information, and the second RO corresponds to a second value in the binary bitmap information; or... The first information is a first preset threshold; Determining whether the configured RO performs LBT based on the first information includes: Determine the second RO duty cycle for the first M reference slots and the third RO duty cycle for the first M+1 reference slots corresponding to each PRACH configuration index; M is a positive integer; If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

12. A Listen-Then-Speak (LBT) device, characterized in that, include: The sending module is used to send the first information to the terminal; The first information is used by the terminal to determine whether the configured random access channel (RO) should perform LBT. Wherein, the first information is binarized information, and the first information is associated with the Physical Random Access Channel (PRACH) configuration index; and if the first information is binarized bitmap information, and the binarized bitmap information contains both a first value and a second value, then the first RO corresponding to the PRACH configuration index associated with the first information performs LBT, and the second RO does not perform LBT. The first RO corresponds to a first value in the binary bitmap information, and the second RO corresponds to a second value in the binary bitmap information; or... The first information is a first preset threshold; Determining whether the configured RO performs LBT based on the first information includes: Determine the second RO duty cycle for the first M reference slots and the third RO duty cycle for the first M+1 reference slots corresponding to each PRACH configuration index; M is a positive integer; If the duty cycle of the second RO is less than or equal to the first preset threshold and the duty cycle of the third RO is greater than the first preset threshold, then the ROs of the first M reference slots corresponding to each PRACH configuration index will not perform LBT, while the ROs of the other reference slots will perform LBT.

13. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a computer program for causing the processor to perform the Listen-Before-Speak (LBT) method as described in any one of claims 1 to 5.

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