Random access method, device and storage medium

Abstract

This disclosure relates to a random access method, apparatus, and storage medium. The random access method is applied to a terminal configured with a first initial bandwidth portion and a second initial bandwidth portion. The random access method includes: determining first information; and performing random access based on the first information. The first initial bandwidth portion is a general-purpose bandwidth portion, the second initial bandwidth portion is a bandwidth portion specifically for RedCap terminals, and the first information indicates first SSB information, which is the SSB information configured in the first initial bandwidth portion. This disclosure improves communication efficiency.

Description

[0001] This disclosure is a divisional application of application number 202180002091.0, filed on July 7, 2021, entitled "Random Access Method, Apparatus and Storage Medium". Technical Field

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

[0003] With the continuous development of IoT services, such as video surveillance, smart homes, wearable devices, and industrial sensing and monitoring, these services typically require speeds of tens to 100 Mbps, while also having relatively high latency requirements. Therefore, technologies like Machine-Type Communication (MTC) and Narrowband Internet of Things (NB-IoT) are insufficient to meet these requirements. Consequently, a new type of terminal has been proposed to cover mid-range IoT devices within the 5G New Radio (NR) interface. In the current 3GPP standardization, this new type of terminal is called a Reduced Capability UE, or simply NR-lite or Redcap terminal.

[0004] The introduction of Redcap terminals has led to a differentiation in terminal capabilities. For example, Redcap terminals have limited transmit and receive bandwidth compared to normal UEs, thus requiring differentiated bandwidth configurations. How to configure random access resources for Redcap terminals with differentiated bandwidth configurations is a topic that needs to be studied. Summary of the Invention

[0005] To overcome the problems existing in related technologies, this disclosure provides a random access method, apparatus and storage medium.

[0006] According to a first aspect of the present disclosure, a random access method is provided, applied to a terminal, the random access method comprising:

[0007] In response to the terminal being configured with a first initial bandwidth portion and a second initial bandwidth portion, first information is determined; the first information is used to indicate SSB information that has a mapping relationship with the second random access resource information configured in the second initial bandwidth portion; random access is performed based on the first information.

[0008] In one embodiment, the first information is used to indicate that the second random access resource information and the first SSB information have a mapping relationship, and the first SSB information is the SSB information configured in the first initial bandwidth portion; the random access based on the first information includes: monitoring the first SSB information in the first initial bandwidth portion, determining the second random access resource information according to the monitored first SSB information, and performing random access based on the second random access resource information.

[0009] In one embodiment, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information; determining the second random access resource information based on the monitored first SSB information includes: determining the spatial beam information of the first SSB based on the monitored first SSB information; and using the spatial beam information of the first SSB as the spatial beam information of the second general control resource set.

[0010] In one embodiment, the first information is used to indicate that the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the first SSB information; determining the second random access resource information based on the monitored first SSB information includes: determining the time-frequency domain information of the first PRACH resource set based on the monitored first SSB information; and using the time-frequency domain information of the first PRACH resource set as the time-frequency domain information of the second PRACH resource set.

[0011] In one embodiment, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information, and the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the second SSB information; the first SSB information is the SSB information configured in the first initial bandwidth portion, and the second SSB information is the SSB information configured in the second initial bandwidth portion.

[0012] In one embodiment, the first information is used to indicate that the second random access resource information and the second SSB information have a mapping relationship, and the second SSB information is the SSB information configured in the second initial bandwidth portion; the random access based on the first information includes: in response to meeting the monitoring conditions for monitoring the second SSB, monitoring the second SSB information, determining the second random access resource information based on the monitored second SSB information, and performing random access based on the second random access resource information.

[0013] In one implementation, the monitoring conditions include at least one of the following:

[0014] The time conditions for monitoring the second SSB information; the mapping relationship conditions between the first SSB and the second SSB.

[0015] In one embodiment, the monitoring conditions are determined using one or a combination of the following methods:

[0016] The monitoring conditions are determined using a predefined method or based on a notification message carried in the first SSB information.

[0017] According to a second aspect of the present disclosure, a random access method is provided, applied to a network device, the random access method comprising:

[0018] Configure a first initial bandwidth portion and a second initial bandwidth portion; send first information, the first information being used to indicate SSB information that has a mapping relationship with the second random access resource information configured in the second initial bandwidth portion.

[0019] In one embodiment, the first information is used to indicate that the second random access resource information and the first SSB information have a mapping relationship, and the first SSB information is the SSB information configured in the first initial bandwidth portion.

[0020] In one embodiment, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information.

[0021] In one embodiment, the first information is used to indicate that the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the first SSB information.

[0022] In one embodiment, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information, and the first information is used to indicate that the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the second SSB information; the first SSB information is the SSB information configured in the first initial bandwidth portion, and the second SSB information is the SSB information configured in the second initial bandwidth portion.

[0023] In one embodiment, the first information is used to indicate that the second random access resource information and the second SSB information have a mapping relationship, and the second SSB information is the SSB information configured in the second initial bandwidth portion.

[0024] In one embodiment, the method further includes: carrying a notification message in the first SSB information, the notification message being used to indicate the monitoring conditions for monitoring the second SSB.

[0025] In one implementation, the monitoring conditions include at least one of the following:

[0026] The time conditions for monitoring the second SSB information; the mapping relationship conditions between the first SSB and the second SSB.

[0027] According to a third aspect of the present disclosure, a random access device is provided for use in a terminal, the random access device comprising:

[0028] The processing unit is configured to determine first information when it is determined that the terminal is configured with a first initial bandwidth portion and a second initial bandwidth portion, wherein the first information is used to indicate SSB information that has a mapping relationship with the second random access resource information configured in the second initial bandwidth portion; the communication unit is configured to perform random access based on the first information.

[0029] In one embodiment, the first information is used to indicate that the second random access resource information and the first SSB information have a mapping relationship, and the first SSB information is the SSB information configured in the first initial bandwidth portion; the communication unit monitors the first SSB information in the first initial bandwidth portion, determines the second random access resource information according to the monitored first SSB information, and performs random access based on the second random access resource information.

[0030] In one embodiment, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information; the communication unit determines the spatial beam information of the first SSB based on the monitored first SSB information; and uses the spatial beam information of the first SSB as the spatial beam information of the second general control resource set.

[0031] In one embodiment, the first information is used to indicate that the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the first SSB information; the communication unit determines the time-frequency domain information of the first PRACH resource set based on the monitored first SSB information; and uses the time-frequency domain information of the first PRACH resource set as the time-frequency domain information of the second PRACH resource set.

[0032] In one embodiment, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information, and the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the second SSB information; the first SSB information is the SSB information configured in the first initial bandwidth portion, and the second SSB information is the SSB information configured in the second initial bandwidth portion.

[0033] In one embodiment, the first information is used to indicate that the second random access resource information and the second SSB information have a mapping relationship, and the second SSB information is the SSB information configured in the second initial bandwidth portion; in response to meeting the monitoring conditions for monitoring the second SSB, the communication unit monitors the second SSB information, determines the second random access resource information based on the monitored second SSB information, and performs random access based on the second random access resource information.

[0034] In one implementation, the monitoring conditions include at least one of the following:

[0035] The time conditions for monitoring the second SSB information; the mapping relationship conditions between the first SSB and the second SSB.

[0036] In one embodiment, the monitoring conditions are determined using one or a combination of the following methods:

[0037] The monitoring conditions are determined using a predefined method or based on a notification message carried in the first SSB information.

[0038] According to a fourth aspect of the present disclosure, a random access device is provided, applied to a network device, the random access device comprising:

[0039] The processing unit is configured to configure a first initial bandwidth portion and a second initial bandwidth portion; the sending unit is configured to send first information, wherein the first information is used to indicate SSB information that has a mapping relationship with the second random access resource information configured in the second initial bandwidth portion.

[0040] In one embodiment, the first information is used to indicate that the second random access resource information and the first SSB information have a mapping relationship, and the first SSB information is the SSB information configured in the first initial bandwidth portion.

[0041] In one embodiment, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information.

[0042] In one embodiment, the first information is used to indicate that the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the first SSB information.

[0043] In one embodiment, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information, and the first information is used to indicate that the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the second SSB information; the first SSB information is the SSB information configured in the first initial bandwidth portion, and the second SSB information is the SSB information configured in the second initial bandwidth portion.

[0044] In one embodiment, the first information is used to indicate that the second random access resource information and the second SSB information have a mapping relationship, and the second SSB information is the SSB information configured in the second initial bandwidth portion.

[0045] In one embodiment, the sending unit is further configured to carry a notification message in the first SSB information, the notification message being used to indicate the monitoring conditions for monitoring the second SSB.

[0046] In one implementation, the monitoring conditions include at least one of the following:

[0047] The time conditions for monitoring the second SSB information; the mapping relationship conditions between the first SSB and the second SSB.

[0048] According to a fifth aspect of this disclosure, a random access device is provided, comprising:

[0049] Processor; memory used to store processor-executable instructions;

[0050] The processor is configured to execute the random access method described in the first aspect or any embodiment of the first aspect.

[0051] According to a sixth aspect of the present disclosure, a random access device is provided, comprising:

[0052] Processor; memory used to store processor-executable instructions;

[0053] The processor is configured to execute the random access method described in the second aspect or any embodiment of the second aspect.

[0054] According to a seventh aspect of the present disclosure, a storage medium is provided, the storage medium storing instructions that, when executed by a processor of a terminal, enable the terminal to execute the random access method described in the first aspect or any embodiment of the first aspect.

[0055] According to an eighth aspect of this disclosure, a storage medium is provided, the storage medium storing instructions that, when executed by a processor of a network device, enable the network device to perform the random access method described in the second aspect or any embodiment of the second aspect.

[0056] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: When a terminal is configured with a first initial BWP and a second initial BWP, first information is determined. This first information is used to indicate SSB information that has a mapping relationship with the second random access resource information configured in the second initial bandwidth portion, thus clearly identifying the SSB associated with the second random access resource information in the second initial BWP. Based on the first information, random access is performed, and the random access resource corresponding to random access on the second initial BWP can be directly determined, thereby improving communication efficiency.

[0057] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0058] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0059] Figure 1 This is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0060] Figure 2 This is a schematic diagram illustrating the correspondence between SSB and PRACH according to an exemplary embodiment.

[0061] Figure 3 This is a protocol specification illustrating the mapping relationship between each SSB and random access resources in an SSB burst, according to an exemplary embodiment.

[0062] Figure 4 This is a flowchart illustrating a random access method according to an exemplary embodiment.

[0063] Figure 5 This is a flowchart illustrating a random access method according to an exemplary embodiment.

[0064] Figure 6 This is a flowchart illustrating a random access method according to an exemplary embodiment.

[0065] Figure 7 This is a flowchart illustrating a random access method according to an exemplary embodiment.

[0066] Figure 8 This is a flowchart illustrating a random access method according to an exemplary embodiment.

[0067] Figure 9 This is a block diagram illustrating a random access device according to an exemplary embodiment.

[0068] Figure 10 This is a block diagram illustrating a random access device according to an exemplary embodiment.

[0069] Figure 11 This is a block diagram illustrating an apparatus for random access according to an exemplary embodiment.

[0070] Figure 12 This is a block diagram illustrating an apparatus for random access according to an exemplary embodiment. Detailed Implementation

[0071] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0072] The access method provided in this disclosure can be applied to... Figure 1 The wireless communication system shown. (See attached image) Figure 1 As shown, this wireless communication system includes a terminal and a network device. The terminal and the network device send and receive information through wireless resources.

[0073] Understandable, Figure 1 The wireless communication system shown is for illustrative purposes only. A wireless communication system may also include other network devices, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Figure 1 Not shown in the diagram. This disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0074] It is further understood that the wireless communication system of this disclosure is a network providing wireless communication functionality. The wireless communication system can employ different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single-carrier frequency division multiple access (SC-FDMA), and carrier sense multiple access with collision avoidance. Based on factors such as capacity, speed, and latency, networks can be categorized as 2G networks, 3G networks, 4G networks, or future evolution networks, such as 5G networks. 5G networks can also be referred to as New Radio (NR). For ease of description, this disclosure may sometimes simply refer to the wireless communication network as a network.

[0075] Furthermore, the network device involved in this disclosure can also be referred to as a wireless access network device. This wireless access network device can be: a base station, an evolved Node B (eB) base station, a home base station, an access point (AP) in a Wi-Fi system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It can also be a gNB in ​​an NR system, or a component or part of a base station. When it is a vehicle-to-everything (V2X) communication system, the network device can also be an in-vehicle device. It should be understood that the specific technologies and device forms used in the embodiments of this disclosure are not limited.

[0076] Furthermore, the terminal involved in this disclosure can also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., and is a device that provides voice and / or data connectivity to a user. For example, a terminal can be a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals include: smartphones (Mobile Phones), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablets, wearable devices, or in-vehicle devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be an in-vehicle device. It should be understood that the embodiments of this disclosure do not limit the specific technology or specific device form adopted by the terminal.

[0077] The terminal involved in the embodiments of this disclosure can be understood as a new type of terminal designed in 5G NR: Reducedcapability UE, or simply NR-lite. In the embodiments of this disclosure, this new terminal is referred to as a Redcap terminal.

[0078] Similar to Internet of Things (IoT) devices in Long Term Evolution (LTE), Redcap terminals typically need to meet the following requirements:

[0079] -Low cost, low complexity

[0080] - Some degree of coverage enhancement

[0081] - Power saving

[0082] Since current NR systems are designed for high-end terminals with high speed and low latency, they cannot meet the requirements of Redcap terminals. Therefore, the current NR system needs to be modified to meet the requirements of NR-lite. For example, to meet requirements such as low cost and low complexity, the radio frequency (RF) bandwidth of NR-IoT can be limited, for example, to 5 MHz or 10 MHz, or the size of the NR-lite buffer can be limited, thereby limiting the size of each received transmission block, etc. Regarding power saving, possible optimization directions include simplifying the communication process and reducing the number of times the NR-lite terminal detects the downlink control channel.

[0083] In related technologies, a unified random access resource configuration method is adopted for all types of terminals. For example, in NR systems, terminal access configuration is performed through the RACH-ConfigCommon information element. The first part of the RACH-ConfigCommon information element configuration is used to configure the total amount of random access resources for the cell. The configured random access resources include time-domain resources, frequency-domain resources, and random access preambles used for random access. The second part of the RACH-ConfigCommon information element configuration is used to configure the mapping relationship between the Synchronization Signal and PBCH block (SSB) and random access resources. For example, it configures the mapping relationship between the SSB and random access resources such as the common control resource set (common CORESET) and the Physical Random Access Channel (PRACH).

[0084] In traditional LTE systems, only one synchronization channel and one broadcast channel are transmitted per cycle. However, NR introduces the concept of multi-beam transmission. Therefore, SSB transmission is also based on multi-beam transmission. That is, within one cycle, an SSB is transmitted using multiple beams. An SSB transmitted using different beams within a cycle is called an SSB burst. Each SSB in an SSB burst corresponds to a different subset of random access resources, for example... Figure 2 As shown, there is a correspondence between SSBs and PRACHs. The protocol defines the mapping relationship between each SSB in an SSB burst and the random access resources. For the protocol specifications regarding the mapping relationship between each SSB in an SSB burst and the random access resources, please refer to [link to relevant documentation]. Figure 3 As shown.

[0085] See Figure 3As shown, `ssb-per RACH-Occasion` is used to configure the mapping between SSBs and ROs, and represents the number of SSBs corresponding to one RACH occasion. The value of `ssb-per RACH-Occasion` ranges from oneEighth to sixteen. Different values ​​of `ssb-per RACH-Occasion` represent different mapping relationships between SSBs and ROs. When `ssb-per RACH-Occasion > 1`, it means that multiple SSBs correspond to one RACH occasion. Further details can be found in [link to documentation]. Figure 2 As shown, each SSB-per RACH-Occasion value corresponds to a CB-PreamblesPerSSB set. CB-PreamblesPerSSB configures the number of contention-based random access preambles that each SSB can use within a RO. Different values ​​of CB-PreamblesPerSSB represent the number of different contention-based preambles used by the synchronization broadcast signal block.

[0086] In the current R15 and R16 systems, there is a mapping relationship between SSBs and PRACHs. The terminal first measures the SSBs and then determines the SSBs that meet the specified conditions. After determining the SSBs, the terminal uses the mapping relationship between the SSBs and PRACHs to determine the PRACH resources corresponding to the selected SSBs for random access.

[0087] However, as mentioned earlier, a single SSB burst contains multiple SSBs, and different SSBs use different beams for transmission. Furthermore, each SSB has a corresponding CORESET#0, a common physical downlink control channel (common PDCCH), and a System Information Block (SIB) scheduled by the common PDCCH. The CORESET#0, common PDCCH, and common PDSCH corresponding to a particular SSB have the same quasi-co-location (QCL) relationship with that SSB.

[0088] In related technologies, due to the bandwidth limitations of RedCap terminals, it is necessary to configure dedicated initial downlink bandwidth portions (initial DL BWP) and / or initial uplink bandwidth portions (initial UL BWP) for RedCap terminals. That is, a RedCap terminal is configured with two initial DL BWPs and / or two initial UL BWPs. One is the original general-purpose bandwidth portion (BWP), hereinafter referred to as the first initial BWP, and the other is a BWP specifically for RedCap terminals, hereinafter referred to as the second initial BWP. The first initial BWP may include a first initial DL BWP and / or a first initial UL BWP. The second initial BWP may include a second initial DL BWP and / or a second initial UL BWP.

[0089] In related technologies, the first and second initial BWPs are each configured with channel information transmitted on these BWPs, such as SSB information and random access resources mapped to the SSB information, such as commonCORESET and PRACH resources. However, RedCap terminals use the random access resources configured on the second initial BWP when performing random access, but a RedCap terminal can correspond to SSBs on multiple BWPs. Which BWP's SSB the random access resources used by the RedCap terminal should be mapped to is a problem that requires further optimization and research.

[0090] This disclosure provides a random access method applied to a terminal configured with a first initial bandwidth portion and a second initial bandwidth portion. The random access method includes: determining first information; and performing random access based on the first information. The first initial bandwidth portion is a general-purpose bandwidth portion, the second initial bandwidth portion is a bandwidth portion specifically for RedCap terminals, and the first information indicates first SSB information, which is the SSB information configured in the first initial bandwidth portion.

[0091] This disclosure provides a random access method in which random access resources such as PRACH and CORESET on the second Initial BWP are explicitly mapped to SSBs in the first Initial DL BWP, or are mapped to SSBs in the second Initial DL BWP.

[0092] For ease of description, the SSB information configured in the first Initial BWP is referred to as the first SSB information. The random access resource information configured in the first Initial BWP is referred to as the first random access resource information. The SSB information configured in the second Initial BWP is referred to as the second SSB information. The random access resource information configured in the second Initial BWP is referred to as the second random access resource information.

[0093] Figure 4 This is a flowchart illustrating a random access method according to an exemplary embodiment, such as... Figure 4 As shown, the random access method is used in a terminal, which can be understood as a RedCap terminal. The random access method includes the following steps.

[0094] In step S11, in response to the terminal being configured with a first initial BWP and a second initial BWP, first information is determined.

[0095] In this embodiment of the disclosure, the first initial BWP is configured with first SSB information and first random access resource information, and the second initial BWP is configured with second SSB information and second random access resource information.

[0096] The first information is used to indicate SSB information that has a mapping relationship with the second random access resource information configured in the second initial BWP.

[0097] In step S12, random access is performed based on the first information.

[0098] In this embodiment of the disclosure, the second random access resource information may be mapped to the first SSB information in the first initial BWP, or it may be mapped to the second SSB information in the second initial BWP. Alternatively, the second random access resource information may be mapped to both the first SSB information in the first initial BWP and the second SSB information in the second initial BWP.

[0099] In one implementation, the second random access resource information is mapped to the first SSB information in the first initial BWP. The first SSB information can be configured in the first initial DL BWP. The terminal can monitor the first SSB information in the first initial DL BWP and determine the second random access resource based on the monitored first SSB information.

[0100] Figure 5This is a flowchart illustrating a random access method according to an exemplary embodiment, such as... Figure 5 As shown, the random access method used in the terminal includes the following steps.

[0101] In step S21, the first SSB information is monitored in the first initial BWP.

[0102] In step S22, the second random access resource information is determined based on the monitored first SSB information, and random access is performed based on the second random access resource information.

[0103] In one embodiment, the second random access resource information in this disclosure includes a set of PRACH resources configured for the RedCap terminal, hereinafter referred to as the second PRACH resource set. That is, the RedCap terminal can map the PRACH resources configured for the RedCap terminal to the first SSB information on the first Initial DL BWP.

[0104] Figure 6 This is a flowchart illustrating a random access method according to an exemplary embodiment, such as... Figure 6 As shown, the random access method used in the terminal includes the following steps.

[0105] In step S31, the first SSB information is monitored in the first initial BWP.

[0106] In step S32, the time-frequency domain information of the first PRACH resource set is determined based on the monitored first SSB information.

[0107] In step S33, the time-frequency domain information of the first PRACH resource is used as the time-frequency domain information of the second PRACH resource set.

[0108] In one embodiment, the second random access resource information in this disclosure includes a common core set, hereinafter referred to as the second common core set. First information is used to indicate that the second common core set in the second random access resource has a mapping relationship with the first SSB information. Specifically, the second common core set monitored by the RedCap terminal on the second initial DL BWP may have the same spatial beam information as the first SSB determined on the first initial DL BWP, for example, having the same QCL.

[0109] Figure 7 This is a flowchart illustrating a random access method according to an exemplary embodiment, such as... Figure 7 As shown, the random access method used in the terminal includes the following steps.

[0110] In step S41, the first SSB information is monitored in the first initial BWP.

[0111] In step S42, the spatial beam information of the first SSB is determined based on the monitored first SSB information.

[0112] In step S43, the spatial beam information of the first SSB is used as the spatial beam information of the second general control resource set.

[0113] In this embodiment of the disclosure, the second PRACH resource set configured for the RedCap terminal is mapped to the first SSB on the first Initial DLBWP, and / or the second commonCORESET monitored on the second Initial DLBWP is configured to have the same spatial beam information as the first SSB determined on the first initial DLBWP. This can reduce the access latency of the terminal, and the terminal can perform random access after reading the corresponding configuration on the first initial DLBWP.

[0114] In one example, the second PRACH resource set configured for the RedCap terminal is mapped to the first SSB on the first Initial DL BWP. Simultaneously, the common core set monitored on the second Initial DL BWP has the same QCL as the SSB determined on the first initial DL BWP. The RedCap terminal can determine the random access resource information on the second initial DL BWP during random access using the following method.

[0115] The RedCap terminal can obtain SSB information (first SSB information) on the first Initial DL BWP and determine the PRACH configuration on the second Initial UL BWP and / or the second Initial UL BWP based on the SSB configuration or other preset rules on the first Initial DL BWP. Then, based on the SSB information monitored on the first Initial DL BWP (including the number of SSBs in the entire SSB burst and the index of the SSB currently monitored by the terminal), it determines the available second PRACH resource set. The available second PRACH resource set can be multiple PRACH resource sets, and these multiple second PRACH resource sets have a mapping relationship with multiple first SSBs. The RedCap terminal can determine the first SSB that satisfies random access based on the measurement results and perform random access based on the second PRACH resource set mapped from the first SSB.

[0116] Furthermore, the RedCap terminal obtains the configuration of the common core set on the second initial DL BWP. Based on the SSB information obtained on the first initial DL BWP, it can further determine the QCL information of the common core set. That is, the terminal receives the common core set on the second initial DL BWP using the same QCL information as the SSB monitored on the first initial DL BWP. In addition, in this embodiment, the time-domain position of the common core set on the second initial DL BWP can be further determined based on the time-domain position of the first SSB monitored on the first initial DL BWP.

[0117] In this embodiment, the PRACH resources on the second initial DL BWP are mapped to the first SSB information on the first initial DL BWP. Simultaneously, the common coreset monitored on the second initial DL BWP shares the same QCL as the first SSB information determined on the first initial DL BWP. Once the terminal has read the corresponding configuration on the first initial DL BWP, it can perform random access, reducing access latency. However, when the terminal needs to perform random access in connected mode, a BWP handover is required. The BWP is switched to the first initial DL BWP to measure the corresponding SSB resources in order to determine the random access resources on the second initial DL BWP.

[0118] In one embodiment of this disclosure, the second random access resource information may be mapped to the first SSB information in the first initial BWP and to the second SSB information in the second initial BWP. For example, the second common core set may be mapped to the first SSB information, but the second PRACH resource set is not mapped to the first SSB on the first initial DL BWP, but to the second SSB on the second initial DL BWP. That is, the first information is used to indicate that the second common core set is mapped to the first SSB information, and the second PRACH resource set in the second random access resource is mapped to the second SSB information.

[0119] In another embodiment of this disclosure, the second random access resource information and the second SSB information have a mapping relationship. For example, the second PRACH resource set configured for the RedCap terminal is mapped to the second SSB on the second Initial DL BWP, and the second common CORESET monitored on the second Initial DL BWP has the same spatial beam information as the second SSB determined on the second initial DL BWP, such as having the same QCL.

[0120] In this embodiment of the disclosure, in order to reduce the time for the terminal to monitor the second SSB on the second initial DL BWP, monitoring conditions for the second SSB can be set. When it is determined that the monitoring conditions for monitoring the second SSB are met, the second SSB information is monitored, and the second random access resource information is determined based on the monitored second SSB information. Random access is then performed based on the second random access resource information.

[0121] The monitoring conditions for the second SSB include at least one of the following: the time condition for monitoring the information of the second SSB; and the mapping relationship condition between the first SSB and the second SSB.

[0122] In this embodiment of the disclosure, the monitoring conditions of the second SSB can be determined by a predefined method, or they can be a notification message carried in the first SSB information, through which the monitoring conditions of the second SSB are indicated.

[0123] In one example, a mapping relationship between the SSB on the second initial DL BWP and the SSB on the first initial DL BWP is predefined. The terminal can narrow down or directly determine the second SSB to be monitored based on the preset relationship.

[0124] Wherein, if there is a mapping relationship between the second random access resource information and the second SSB information, the terminal can determine the second SSB information on the second initial DL BWP, the mapping relationship between the second SSB information and the PRACH on the second initial UL BWP, and / or the mapping relationship between the second SSB information and the common CORESET on the second initial DL BWP.

[0125] Before random access, the terminal needs to measure the SSBs on the second initial DL BWP to determine the second SSBs that meet the conditions. Then, based on the mapping relationship, it selects the second PRACH resource set corresponding to the second SSB that meets the conditions. Specifically, the terminal receives the common CORESET based on the second SSB determined in the second initial DL BWP, including determining the QCL and reception time based on this second SSB.

[0126] Based on the above embodiments, the random access method provided in this disclosure explicitly maps the random access resources (common CORESET and PRACH) on the second initial BWP to the SSBs on the first initial DL BWP. Alternatively, the random access resources (common CORESET and PRACH) on the second initial BWP are mapped to the SSBs on the second initial DL BWP. Therefore, when performing random access, the random access resources corresponding to random access on the second initial BWP can be directly determined, which can improve communication efficiency.

[0127] Based on the same concept, embodiments of this disclosure also provide a random access method applied to network devices.

[0128] Figure 8 This is a flowchart illustrating a random access method according to an exemplary embodiment, such as... Figure 8 As shown, the random access method used in network devices includes the following steps.

[0129] In step S51, the first initial BWP and the second initial BWP are configured.

[0130] The first initial BWP is configured with the first SSB information and the first random access resource information, and the second initial BWP is configured with the second SSB information and the second random access resource information.

[0131] In step S52, first information is sent, which is used to indicate SSB information that has a mapping relationship with the second random access resource information configured in the second initial BWP.

[0132] In one implementation, the first information is used to indicate that the second random access resource information and the first SSB information have a mapping relationship.

[0133] On one hand, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information. On the other hand, the first information is used to indicate that the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the first SSB information. Alternatively, the first information is used to indicate that the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the second SSB information.

[0134] In another implementation, the first information is used to indicate that the second random access resource information and the second SSB information have a mapping relationship.

[0135] In this embodiment of the disclosure, the first information is used to indicate that when there is a mapping relationship between the second random access resource information and the second SSB information, a notification message is carried in the first SSB information, and the monitoring conditions for monitoring the second SSB are indicated through the notification message.

[0136] In one implementation, the monitoring conditions include at least one of the following:

[0137] The time conditions for monitoring the second SSB information; the mapping relationship conditions between the first SSB and the second SSB.

[0138] Based on the above embodiments, the random access method provided in this disclosure explicitly maps the random access resources (common CORESET and PRACH) on the second initial BWP to the SSBs on the first initial DL BWP. Alternatively, the random access resources (common CORESET and PRACH) on the second initial BWP are mapped to the SSBs on the second initial DL BWP. Therefore, when performing random access, the random access resources corresponding to random access on the second initial BWP can be directly determined, which can improve communication efficiency.

[0139] It is understood that the random access method provided in this disclosure is also applicable to the process of random access achieved through interaction between a terminal and a network device. During the process of random access achieved through interaction between a terminal and a network device, both the terminal and the network device possess the functions described in the above embodiments, which can be referred to in the relevant descriptions of the above embodiments, and will not be elaborated further here.

[0140] It should be noted that those skilled in the art will understand that the various implementation methods / embodiments described above in this disclosure can be used in conjunction with the foregoing embodiments, or they can be used independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principle is similar. In this disclosure, some embodiments are described as implementations used together. Of course, those skilled in the art will understand that such illustrative examples are not intended to limit the embodiments of this disclosure.

[0141] Based on the same concept, embodiments of this disclosure also provide a random access device.

[0142] It is understood that the random access device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of this disclosure.

[0143] Figure 9 This is a block diagram illustrating a random access device according to an exemplary embodiment. (Refer to...) Figure 9 The random access device 100 is applied to a terminal and includes a processing unit 101 and a communication unit 102.

[0144] Processing unit 101 is configured to determine first information when it is determined that the terminal is configured with a first initial BWP and a second initial BWP. The first information is used to indicate SSB information that has a mapping relationship with the second random access resource information configured in the second initial BWP. Communication unit 102 is configured to perform random access based on the first information.

[0145] In one embodiment, the first information is used to indicate that the second random access resource information and the first SSB information have a mapping relationship, and the first SSB information is the SSB information configured in the first initial bandwidth portion. The communication unit 102 monitors the first SSB information in the first initial BWP, determines the second random access resource information based on the monitored first SSB information, and performs random access based on the second random access resource information.

[0146] In one embodiment, the first information is used to indicate that there is a mapping relationship between the second general control resource set in the second random access resource and the first SSB information. The communication unit 102 determines the spatial beam information of the first SSB based on the monitored first SSB information. The spatial beam information of the first SSB is then used as the spatial beam information of the second general control resource set.

[0147] In one embodiment, the first information is used to indicate that the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the first SSB information. The communication unit 102 determines the time-frequency domain information of the first PRACH resource set based on the monitored first SSB information. The time-frequency domain information of the first PRACH resource set is then used as the time-frequency domain information of the second PRACH resource set.

[0148] In one embodiment, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information, the second PRACH resource set in the second random access resource has a mapping relationship with the second SSB information, the first SSB information is the SSB information configured in the first initial bandwidth portion, and the second SSB information is the SSB information configured in the second initial bandwidth portion.

[0149] In one embodiment, the first information is used to indicate that there is a mapping relationship between the second random access resource information and the second SSB information, wherein the second SSB information is the SSB information configured in the second initial bandwidth portion. In response to meeting the monitoring conditions for monitoring the second SSB, the communication unit 102 monitors the second SSB information, determines the second random access resource information based on the monitored second SSB information, and performs random access based on the second random access resource information.

[0150] In one implementation, the monitoring conditions include at least one of the following:

[0151] The time conditions for monitoring the second SSB information. The mapping relationship conditions between the first SSB and the second SSB.

[0152] In one implementation, the monitoring conditions are determined using one or a combination of the following methods:

[0153] The determination is made using a predefined method. It is based on the notification message carried in the first SSB information, which indicates the monitoring conditions.

[0154] Figure 10 This is a block diagram illustrating a random access device according to an exemplary embodiment. (Refer to...) Figure 10 The random access device 200 is applied to network equipment and includes a processing unit 201 and a sending unit 202.

[0155] Processing unit 201 is used to configure a first initial bandwidth portion and a second initial bandwidth portion. Sending unit 202 is used to send first information, which is SSB information that has a mapping relationship with the second random access resource information configured in the second initial BWP.

[0156] In one implementation, the first information is used to indicate that the second random access resource information and the first SSB information have a mapping relationship, and the first SSB information is the SSB information configured in the first initial BWP.

[0157] In one implementation, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information.

[0158] In one embodiment, the first information is used to indicate that the second physical random access channel (PRACH) resource set in the second random access resource has a mapping relationship with the first SSB information.

[0159] In one embodiment, the first information is used to indicate that the second general control resource set in the second random access resource has a mapping relationship with the first SSB information, and the second PRACH resource set in the second random access resource has a mapping relationship with the second SSB information. The first SSB information is the SSB information configured in the first initial BWP, and the second SSB information is the SSB information configured in the second initial BWP.

[0160] In one implementation, the first information is used to indicate that the second random access resource information and the second SSB information have a mapping relationship, and the second SSB information is the SSB information configured in the second initial BWP.

[0161] In one embodiment, the sending unit 202 is further configured to carry a notification message in the first SSB information, the notification message being used to indicate the monitoring conditions for monitoring the second SSB.

[0162] In one implementation, the monitoring conditions include at least one of the following:

[0163] The time conditions for monitoring the second SSB information. The mapping relationship conditions between the first SSB and the second SSB.

[0164] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0165] Figure 11This is a block diagram illustrating an apparatus for random access according to an exemplary embodiment. For example, apparatus 300 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0166] Reference Figure 11 The device 300 may include one or more of the following components: processing component 302, memory 304, power component 306, multimedia component 308, audio component 310, input / output (I / O) interface 312, sensor component 314, and communication component 316.

[0167] Processing component 302 typically controls the overall operation of device 300, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 302 may include one or more processors 320 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 302 may include one or more modules to facilitate interaction between processing component 302 and other components. For example, processing component 302 may include a multimedia module to facilitate interaction between multimedia component 308 and processing component 302.

[0168] Memory 304 is configured to store various types of data to support the operation of device 300. Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, etc. Memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0169] The power supply component 306 provides power to the various components of the device 300. The power supply component 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 300.

[0170] Multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 308 includes a front-facing camera and / or a rear-facing camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0171] Audio component 310 is configured to output and / or input audio signals. For example, audio component 310 includes a microphone (MIC) configured to receive external audio signals when device 300 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 304 or transmitted via communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.

[0172] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0173] Sensor assembly 314 includes one or more sensors for providing status assessments of various aspects of device 300. For example, sensor assembly 314 may detect the on / off state of device 300, the relative positioning of components such as the display and keypad of device 300, changes in the position of device 300 or a component of device 300, the presence or absence of user contact with device 300, the orientation or acceleration / deceleration of device 300, and temperature changes of device 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0174] Communication component 316 is configured to facilitate wired or wireless communication between device 300 and other devices. Device 300 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 316 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0175] In an exemplary embodiment, the apparatus 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0176] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, which can be executed by a processor 320 of the device 300 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0177] Figure 12 This is a block diagram illustrating an apparatus 400 for random access according to an exemplary embodiment. For example, apparatus 400 may be provided as a server. (Refer to...) Figure 12 The apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources represented by memory 432 for storing instructions, such as application programs, that can be executed by the processing component 422. The application programs stored in memory 432 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 422 is configured to execute instructions to perform the methods described above…

[0178] Device 400 may also include a power supply component 426 configured to perform power management of device 400, a wired or wireless network interface 450 configured to connect device 400 to a network, and an input / output (I / O) interface 458. Device 400 may operate on an operating system stored in memory 432, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0179] In an exemplary embodiment, the apparatus 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0180] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 432 including instructions, which can be executed by a processing component 422 of the apparatus 400 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0181] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0182] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0183] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0184] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following scope of claims.

[0185] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A random access method, characterized in that, Applied to a terminal, the terminal is configured with a first initial bandwidth portion and a second initial bandwidth portion, the random access method includes: Receive the first information sent by the network device; Based on the first information, random access is performed; Wherein, the first initial bandwidth portion is the original general bandwidth portion, the second initial bandwidth portion is the bandwidth portion dedicated to RedCap terminals, the first information is used to indicate the first SSB information, and the first SSB information is the SSB information configured in the first initial bandwidth portion; The first SSB information has a mapping relationship with the second random access resource information configured in the second initial bandwidth portion; The first information is further used to indicate that there is a mapping relationship between the second random access resource and the second SSB information, wherein the second SSB information is the SSB information configured in the second initial bandwidth portion; determine the monitoring conditions that meet the monitoring of the second SSB information, and monitor the second SSB information; determine the second random access resource information based on the monitored second SSB information, and perform random access based on the second random access resource information; the monitoring conditions of the second SSB include at least one of the following: the time condition for monitoring the second SSB information; the mapping relationship condition between the first SSB and the second SSB.

2. The random access method according to claim 1, characterized in that, Based on the first information, random access is performed, including: In the first initial bandwidth portion, first SSB information is monitored, and second random access resource information is determined based on the monitored first SSB information, and random access is performed based on the second random access resource information.

3. A random access method, characterized in that, Applied to network devices, the random access method includes: Configure a first initial bandwidth portion and a second initial bandwidth portion; wherein, the first initial bandwidth portion is the original general bandwidth portion, and the second initial bandwidth portion is the bandwidth portion dedicated to RedCap terminals; Send first information, which is used to indicate first SSB information, which is the SSB information configured in the first initial bandwidth portion; the first SSB information has a mapping relationship with the second random access resource information configured in the second initial bandwidth portion; The first information is further used to indicate that there is a mapping relationship between the second random access resource and the second SSB information, wherein the second SSB information is the SSB information configured in the second initial bandwidth portion; the first information is used to instruct the terminal to monitor the second SSB information when it is determined that the monitoring conditions for monitoring the second SSB information are met, to determine the second random access resource information based on the monitored second SSB information, and to perform random access based on the second random access resource information; the monitoring conditions for the second SSB include at least one of the following: the time condition for monitoring the second SSB information; the mapping relationship condition between the first SSB and the second SSB.

4. A random access device, characterized in that, Applied to a terminal, the terminal is configured with a first initial bandwidth portion and a second initial bandwidth portion, the random access device includes: The processing unit is configured to receive first information sent by a network device, wherein the first initial bandwidth portion is a general-purpose bandwidth portion, the second initial bandwidth portion is a bandwidth portion dedicated to RedCap terminals, the first information is used to indicate first SSB information, the first SSB information is the SSB information configured in the first initial bandwidth portion, and the first SSB information has a mapping relationship with the second random access resource information configured in the second initial bandwidth portion. The communication unit is configured to perform random access based on the first information; the first information is further used to indicate that there is a mapping relationship between the second random access resource and the second SSB information, the second SSB information being the SSB information configured in the second initial bandwidth portion; determine the monitoring conditions that satisfy the monitoring of the second SSB information, and monitor the second SSB information; determine the second random access resource information based on the monitored second SSB information, and perform random access based on the second random access resource information; the monitoring conditions of the second SSB include at least one of the following: the time condition for monitoring the second SSB information; the mapping relationship condition between the first SSB and the second SSB.

5. A random access device, characterized in that, Applied to network devices, the random access device includes: A processing unit is configured to configure a first initial bandwidth portion and a second initial bandwidth portion; wherein the first initial bandwidth portion is a general-purpose bandwidth portion, and the second initial bandwidth portion is a bandwidth portion dedicated to RedCap terminals; The sending unit is configured to send first information, which indicates first SSB information, which is the SSB information configured in the first initial bandwidth portion; the first SSB information has a mapping relationship with the second random access resource information configured in the second initial bandwidth portion. The first information is further used to indicate that there is a mapping relationship between the second random access resource and the second SSB information, wherein the second SSB information is the SSB information configured in the second initial bandwidth portion; the first information is used to instruct the terminal to monitor the second SSB information when it is determined that the monitoring conditions for monitoring the second SSB information are met, to determine the second random access resource information based on the monitored second SSB information, and to perform random access based on the second random access resource information; the monitoring conditions for the second SSB include at least one of the following: the time condition for monitoring the second SSB information; the mapping relationship condition between the first SSB and the second SSB.

6. A random access device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the random access method according to any one of claims 1 to 2 or the random access method according to claim 3.

7. A storage medium, characterized in that, The storage medium stores instructions that, when executed by a processor, enable the processor to perform the random access method according to any one of claims 1 to 2 or the random access method according to claim 3.

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