WO2023050199A1

WO2023050199A1 - Random access method and apparatus, terminal device, and network device

Info

Publication number: WO2023050199A1
Application number: PCT/CN2021/121850
Authority: WO
Inventors: 胡奕; 李海涛; 林雪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2023-04-06
Also published as: CN117561782A

Abstract

Embodiments of the present application provide a random access method and apparatus, a terminal device, and a network device. The method comprises: receiving first configuration information, the first configuration information being used for configuring a plurality of physical uplink shared channel (PUSCH) resources, the plurality of PUSCH resources being all used for a two-step random access procedure, and different PUSCH resources corresponding to different modulation and coding scheme (MCS) levels; sending a first message, the first message comprising a first preamble sequence and a first PUSCH, the first PUSCH being sent on the basis of a first PUSCH resource among the plurality of PUSCH resources, and the MCS level corresponding to the first PUSCH resource matching the device type of the terminal device.

Description

A random access method and device, terminal equipment, and network equipment

technical field

The embodiments of the present application relate to the field of mobile communication technologies, and in particular to a random access method and device, terminal equipment, and network equipment.

Background technique

The three major application scenarios of the fifth generation mobile communication technology (5th Generation Mobile Communication Technology, 5G) include enhanced mobile broadband (eMBB), massive machine type communication (mMTC) and ultra-reliable low-latency communication (uRLLC). With the evolution of communication technology, terminal IoT applications such as industrial wireless sensors, video surveillance and wearable devices have put forward new requirements for 5G terminals, such as complexity and cost reduction, size reduction, and lower energy consumption. For this reason, the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) introduced a low-capability terminal equipment (Reduced capability UE, RedCap UE) in Release 17 (Release 17, Rel-17) of the standardization process. Compared with ordinary terminal equipment, RedCap UE has lower design complexity and lower power level, so that RedCap UE has lower hardware cost and power consumption, so as to prolong the battery life of terminal equipment.

The uplink coverage of the low-power RedCap UE is smaller than that of ordinary terminal equipment. Therefore, when the low-power RedCap UE is introduced into the communication network, the network equipment will reduce the two-step random access process. The Modulation and Coding Scheme (MCS) level corresponding to the Physical Uplink Shared Channel (PUSCH) to ensure the reliability of the two-step random access of low-power RedCap UEs. However, a lower MCS level will result in lower transmission efficiency and waste of resources for common terminal equipment in the communication network.

Contents of the invention

Embodiments of the present application provide a random access method and device, terminal equipment, and network equipment.

An embodiment of the present application provides a random access method applied to a terminal device, including:

Receive first configuration information; the first configuration information is used to configure multiple PUSCH resources; wherein, the multiple PUSCH resources are used for a two-step random access process; different PUSCH resources correspond to different MCS levels;

Sending a first message, where the first message includes a first PUSCH; wherein, the first PUSCH is sent based on a first PUSCH resource among the multiple PUSCH resources, and the MCS level corresponding to the first PUSCH resource is the same as the match the device type of the terminal device described above.

An embodiment of the present application provides a random access method applied to network devices, including:

Sending first configuration information; the first configuration information is used to configure multiple PUSCH resources; wherein, the multiple PUSCH resources are used for a two-step random access process; different PUSCH resources correspond to different MCS levels;

receiving a first message sent by a terminal device; the first message includes a first PUSCH; wherein the first PUSCH is received based on a first PUSCH resource among the plurality of PUSCH resources; the MCS level corresponding to the first PUSCH resource, Match the device type of the terminal device.

An embodiment of the present application provides a random access device, which is applied to a terminal device, including:

The first receiving unit is configured to receive first configuration information; the first configuration information is used to configure multiple PUSCH resources; wherein, the multiple PUSCH resources are all used for a two-step random access process; different PUSCH resources Corresponding to different MCS levels;

The first sending unit is configured to send a first message, where the first message includes a first PUSCH; where the first PUSCH is sent based on a first PUSCH resource among the plurality of PUSCH resources, and the first PUSCH The MCS level corresponding to the resource matches the device type of the terminal device.

An embodiment of the present application provides a random access device applied to network equipment, including:

The second sending unit is configured to send first configuration information; the first configuration information is used to configure multiple PUSCH resources; wherein, the multiple PUSCH resources are all used for a two-step random access process; different PUSCH resources Corresponding to different MCS levels;

The second receiving unit is configured to receive a first message sent by a terminal device; the first message includes a first PUSCH; wherein the first PUSCH is received based on a first PUSCH resource among the plurality of PUSCH resources; the first PUSCH resource is received; The MCS level corresponding to a PUSCH resource matches the device type of the terminal device.

The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to execute the above random access method.

The network device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to execute the above random access method.

The chip provided by the embodiment of the present application is used to implement the above random access method.

Specifically, the chip includes: a processor, configured to invoke and run a computer program from the memory, so that the device installed with the chip executes the above random access method.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program causes a computer to execute the above random access method.

The computer program product provided by the embodiments of the present application includes computer program instructions, where the computer program instructions cause a computer to execute the foregoing random access method.

The computer program provided in the embodiment of the present application, when running on a computer, enables the computer to execute the above random access method.

In the random access method provided by the embodiment of the present application, the terminal device receives the first configuration information; the first configuration information is used to configure multiple PUSCH resources; wherein, the multiple PUSCH resources are used for the two-step random access process; the different The PUSCH resources correspond to different MCS levels; the terminal device sends a first message, and the first message includes the first PUSCH; wherein, the first PUSCH is sent based on the first PUSCH resource among the multiple PUSCH resources, and the MCS level corresponding to the first PUSCH resource, Matches the device type of the end device. That is to say, in the random access method provided by the embodiment of the present application, the network device can configure multiple PUSCH resources for the terminal device, and different PUSCH resources have different MCS levels, fully considering the differences of different types of terminal devices, so that The terminal device can use the PUSCH resource matching its type to perform random access. It ensures the reliability of random access of different types of terminal devices in the network, improves data transmission efficiency, and avoids waste of resources.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application;

FIG. 2A is a first schematic diagram of a flow of a four-step random access method in the related art;

FIG. 2B is a schematic diagram 2 of a four-step random access method in the related art;

FIG. 3 is a schematic flow diagram of a two-step random access method in the related art;

FIG. 4 is a first schematic flow diagram of a random access method provided by an embodiment of the present application;

FIG. 5 is a first schematic diagram of resource distribution provided by the embodiment of the present application;

FIG. 6 is a second schematic diagram of resource distribution provided by the embodiment of the present application;

Fig. 7 is a schematic diagram 3 of resource distribution provided by the embodiment of the present application;

FIG. 8 is a second schematic flow diagram of the random access method provided by the embodiment of the present application;

FIG. 9 is a first structural diagram of a random access device provided by an embodiment of the present application;

FIG. 10 is a second structural diagram of a random access device provided by an embodiment of the present application;

Fig. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a chip according to an embodiment of the present application;

Fig. 13 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in FIG. 1 , a communication system 100 may include a terminal device 110 and a network device 120 . The network device 120 may communicate with the terminal device 110 through an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120 .

It should be understood that the embodiment of the present application is only described by using the communication system 100 as an example, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (Long Term Evolution, LTE) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), Internet of Things (Internet of Things, IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.

In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal device 110 . The access network device can provide communication coverage for a specific geographical area, and can communicate with terminal devices 110 (such as UEs) located in the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, or a Next Generation Radio Access Network (NG RAN) device, Either a base station (gNB) in the NR system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable Devices, hubs, switches, bridges, routers, or network devices in the future evolution of the Public Land Mobile Network (Public Land Mobile Network, PLMN), etc.

The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wirelessly.

For example, the terminal equipment 110 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, user agent, or user device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, IoT devices, satellite handheld terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistant , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.

The terminal device 110 can be used for device-to-device (Device to Device, D2D) communication.

The wireless communication system 100 may also include a core network device 130 that communicates with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, Access and Mobility Management Function (Access and Mobility Management Function , AMF), and for example, authentication server function (Authentication Server Function, AUSF), and for example, user plane function (User Plane Function, UPF), and for example, session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example, a data gateway (Session Management Function+Core Packet Gateway, SMF+PGW- C) Equipment. It should be understood that SMF+PGW-C can realize the functions of SMF and PGW-C at the same time. In the process of network evolution, the above-mentioned core network equipment may be called by other names, or a new network entity may be formed by dividing functions of the core network, which is not limited in this embodiment of the present application.

Various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.

For example, the terminal device establishes an air interface connection with the access network device through the NR interface to transmit user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); access Network equipment such as the next generation wireless access base station (gNB), can establish a user plane data connection with UPF through NG interface 3 (abbreviated as N3); access network equipment can establish control plane signaling with AMF through NG interface 2 (abbreviated as N2) connection; UPF can establish a control plane signaling connection with SMF through NG interface 4 (abbreviated as N4); UPF can exchange user plane data with the data network through NG interface 6 (abbreviated as N6); AMF can communicate with SMF through NG interface 11 (abbreviated as N11) The SMF establishes a control plane signaling connection; the SMF may establish a control plane signaling connection with the PCF through an NG interface 7 (N7 for short).

Figure 1 exemplarily shows a base station, a core network device, and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices and each base station may include other numbers of terminals within the coverage area. The device is not limited in the embodiment of this application.

It should be noted that FIG. 1 is only an illustration of a system applicable to this application, and of course, the method shown in the embodiment of this application may also be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation. It should also be understood that the "correspondence" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated. , configuration and configured relationship. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be used by pre-saving corresponding codes, tables or other It is implemented by indicating related information, and this application does not limit the specific implementation. For example, pre-defined may refer to defined in the protocol. It should also be understood that in the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this .

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the embodiments of the present application. protected range.

Random access is a necessary process for establishing a wireless communication link between a terminal device and a network device. Only after the random access process is completed, the terminal equipment and network equipment may perform regular data transmission and reception.

The random access process is mainly triggered by the following events:

1. The terminal device initially accesses, and establishes a radio resource control (Radio Resource Control, RRC) wireless connection with the network device. Specifically, when the terminal device changes from an idle state (ie RRC_IDLE) to a connected state (ie RRC_CONNECTED), a random access process is triggered.

2. RRC connection reestablishment. That is to say, the terminal device re-establishes the wireless connection after the wireless link fails to trigger the random access process.

3. Switch. When the terminal device needs to establish uplink synchronization with a new cell, a random access process is triggered.

4. In the RRC_CONNECTED state, downlink data arrives, and the uplink (UpLink, UL) is in an out-of-sync state at this time.

5. In the RRC_CONNECTED state, the uplink data arrives, and the UL is out of synchronization at this time, or there is no Physical Uplink Control Channel (PUCCH) resource for sending the Scheduling Request (Scheduling Request, SR).

6. SR failed.

7. Synchronous reconfiguration request from RRC.

8. The terminal device transitions from the active state (RRC_INACTIVE) to the RRC_CONNECTED state.

9. Time calibration is established during the process of adding a secondary cell (Secondary Cell, SCell).

10. Request other system information (System Information, SI).

11. Beam failure recovery.

In Release 15 (Rel-15) of the standardization process, the following two four-step random access methods are supported, a contention-based random access method and a non-contention-based random access method.

Referring to the flowchart shown in FIG. 2A , the competition-based random method is divided into four steps.

In the first step, the preamble sequence is sent. The terminal device sends a message 1 (Message1, Msg1) to the network device, and sends a preamble (preamble) to the network device through Msg1.

The second step is random access response. Here, the network device sends a random access message 2 (Message2, Msg2). Specifically, after receiving Msg1, the network device sends a random access response to the terminal device through Msg2. Msg2 indicates that the preamble has been received.

The third step is to schedule the transmission. Here, the terminal device sends a message 3 (Message3, Msg3) to the network device, wherein, after correctly receiving Msg2, the terminal device uses the uplink authorization resource indicated by Msg2 to send Msg3.

The fourth step is to resolve the competition. Here, the network device sends a random access message 4 (Message4, Msg4) to the terminal device. Here, the network device and the terminal device complete the conflict resolution through Msg4 and end the random access process.

Referring to the flow diagram shown in FIG. 2B, the non-contention-based random access method includes the following steps:

The first step is random access indication. When the terminal device needs to perform cell handover, or when downlink data arrives, the network device may actively request the terminal device to initiate a random access process. The network device may send a message 0 (Message0, Msg0) to the terminal device, and Msg0 may include a random access channel (Random Access Channel, RACH) resource and a preamble sequence used by the terminal device to initiate non-contention random access.

In the second step, the preamble sequence is sent. That is, the terminal device sends Msg1 to the network device. Specifically, the terminal device sends the preamble sequence specified by Msg0 to the network device on the RACH resource indicated by Msg0, so as to trigger random access.

The third step is random access response. That is, the network device sends a random access message 2 (Message2, Msg2), and performs a random access response to the terminal device through Msg2.

In order to reduce the access delay of terminal equipment and reduce signaling overhead, the NR system introduces a two-step random access method in Rel-16. Referring to Fig. 3, the two-step random access includes the following steps.

In the first step, the terminal device sends a message A (Message A, MsgA) to the network device. Wherein, MsgA includes the Preamble transmitted on RACH and the load information transmitted on PUSCH. The load information may include the content of Msg3 in the four-step random access method, such as the identification information of the terminal equipment (ie, UE ID), and the cause value for triggering random access (ie, establishment cause).

In the second step, the network device sends a message B (Message B, MsgB) to the terminal device.

After the transmission of MsgA, the terminal device can monitor the random access response of the network device within the configured window, and if it receives an indication of successful contention conflict resolution from the network device in MsgB, the terminal device ends the random access process.

In some embodiments, if the backoff instruction is received in MsgB, the terminal device executes the transmission of Msg3 and monitors the contention conflict resolution result, and if the contention resolution fails after the transmission of Msg3, the terminal device continues the transmission of MsgA.

Usually, the network device can configure resources for transmitting the MsgA in the two-step random access manner for the terminal device in advance, which is referred to as MsgA resource here. Wherein, the MsgA resources include RACH resources and PUSCH resources. Among them, RACH resources can be used to transmit Preamble, and PUSCH resources can be used to transmit UE ID and establishment cause.

In some embodiments, the configuration of MsgA resources may include RACH resource configuration and PUSCH resource configuration.

Wherein, the configuration of the RACH resource may specifically include the configuration of the time-frequency resource of the RACH and the configuration of the initial preamble root sequence. Here, the network device can broadcast an initial preamble root sequence in each cell, and the terminal device can obtain the preamble set available in the cell through cyclic shift based on the configured initial preamble root sequence.

In addition, the PUSCH resource configuration in the MsgA resource configuration may include: time offset, MCS level and transmission block size (Transmission Block Size, TBS) supported by the PUSCH transmission opportunity (PUSCH occasion, PO), PUSCH time domain resources, and frequency domain resources of the PUSCH.

After the two-step random access method is introduced, if the network device configures the MsgA resource for the two-step random access and the RACH resource for the four-step random access at the same time, for the contention-based random access, the terminal device Before performing random access, it is first necessary to select a random access type. Specifically, the terminal device may select a random access type based on a reference signal receiving power (Reference Signal Receiving Power, RSRP) measurement result. If the RSRP measurement result is higher than the RSRP threshold configured by the network device, the terminal device uses a two-step random access method for random access; otherwise, the terminal device uses a four-step random access method for random access.

In practical applications, different power levels can be defined according to the maximum transmit power that the terminal equipment can support. For example, as shown in Table 1, when the maximum transmission power of the terminal equipment is 31 decibel milliwatts dBm, the corresponding power level is PC1; when the maximum transmission power of the terminal equipment is 29 dBm, the corresponding power level is PC1.5, etc. .

Table 1 Definition of power level of terminal equipment

终端设备功率等级Terminal equipment power level	PC1PC1	PC1.5PC1.5	PC2PC2	PC3PC3	PC5PC5
终端设备的最大发射功率(dBm)The maximum transmit power of the terminal equipment (dBm)	3131	2929	2626	23twenty three	2020

At present, in order to save the power consumption of terminal equipment and prolong battery life, a lower power level can be configured for RedCap UE, which corresponds to a lower maximum transmit power.

In the embodiment of this application, the power levels of PC1, PC1.5, PC2, PC3, and PC5 in Table 1 can be collectively referred to as ordinary power levels, and the power levels of PC1, PC1.5, PC2, PC3, and PC5 can be lower than those of PC1, PC1.5, PC2, PC3, and PC5 The classes are collectively referred to as low power classes.

Generally, the higher the power level of the terminal device, the larger the uplink coverage it can support; conversely, the lower the power level of the terminal device, the smaller the uplink coverage it can support. Therefore, when there are terminal devices of normal power level and RedCap UEs of low power level in the network at the same time, in order to ensure the reliability of random access of terminal devices of different power levels, the network device will reduce the PUSCH resource during the two-step random access process. The corresponding MCS level enables a terminal device of a low power level to transmit the PUSCH at a lower MCS level. However, the lower PUSCH MCS level will cause the problem of reduced transmission efficiency of terminal equipment with ordinary power levels in the communication network.

Based on this, an embodiment of the present application provides a random access method, wherein the terminal device can receive the first configuration information sent by the network device; the first configuration information is used to configure multiple PUSCH resources; wherein, the multiple PUSCH resources are all used Based on a two-step random access process; different PUSCH resources correspond to different MCS levels; based on this, the terminal device can send a first message to the network device, and the first message includes the first PUSCH; where the first PUSCH is based on multiple PUSCH resources The first PUSCH resource in is sent, and the MCS level corresponding to the first PUSCH resource matches the device type of the terminal device. That is to say, the random access method provided by the embodiment of the present application can configure multiple PUSCH resources, and different PUSCH resources have different MCS levels, fully considering the differences of different types of terminal equipment, so that terminal equipment can use Match PUSCH resources for random access. It ensures the reliability of random access of different types of terminal devices in the network, improves data transmission efficiency, and avoids waste of resources.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies can be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

An embodiment of the present application provides a random access method. Referring to the schematic flowchart shown in FIG. 4 , the random access method includes step 410 and step 420 .

Step 410, the terminal device receives the first configuration information sent by the network device.

Wherein, the first configuration information is used to configure multiple PUSCH resources; wherein, the multiple PUSCH resources are all used for the two-step random access process; different PUSCH resources correspond to different MCS levels.

In some embodiments, the first configuration information may be public configuration information of a cell. Wherein, the first configuration information may be sent by the network device through broadcasting or multicasting, which is not limited in this embodiment of the present application.

In some embodiments, the first configuration information may be carried in system information (System Information Blocks, SIB) sent by the network device. Exemplarily, the first configuration information may be carried in SIBn, where n is an integer greater than or equal to 1, and the embodiment of the present application does not limit the type of SIB.

In some embodiments, the multiple PUSCH resources configured by the first configuration information may be PUSCH resources used for sending MsgA.

It should be noted that the multiple PUSCH resources may refer to two or more PUSCH resources. Wherein, the multiple PUSCH resources do not overlap with each other. Here, mutual non-overlapping may mean that multiple PUSCH resources do not overlap each other in time domain and/or frequency domain.

In some embodiments, the network device may configure an MCS level for each of the multiple PUSCH resources, and different PUSCH resources correspond to different MCS levels.

Step 420, the terminal device sends the first message to the network device.

Wherein, the first message includes a first PUSCH; wherein, the first PUSCH is sent based on a first PUSCH resource among multiple PUSCH resources, and the MCS level corresponding to the first PUSCH resource matches the device type of the terminal device.

In some embodiments, the first message is the MSGA in the two-step random access process. Specifically, the first message may include the first preamble sequence and the first PUSCH. Wherein, the first PUSCH may carry the identifier of the terminal equipment (ie UE ID), and the cause value of random access (ie establishment cause). It should be noted that if the terminal device triggers the random access process because of RRC re-establishment, the first PUSCH may carry the connected state UE ID and establishment cause.

In some embodiments, the network device may also configure RACH resources for the terminal device in advance, so that the terminal device may send the first preamble sequence on the configured RACH resource. Here, the network device may configure one or more RACH resources for the terminal device, which is not limited in this embodiment of the present application.

In some embodiments, the network device configures multiple PUSCH resources through the first configuration information. Based on this, the terminal device may select an appropriate first PUSCH resource from the configured multiple PUSCH resources to send the first PUSCH in the first message.

Here, different PUSCH resources correspond to different MCS levels. The terminal device can select the first PUSCH resource from the configured multiple PUSCH resources according to the MSC level required by its device type.

In some embodiments, different device types correspond to different power levels, and/or different device types correspond to different maximum transmit powers. That is to say, the device category of the terminal device may be classified according to the power level of the terminal device and/or the maximum transmission power. Specifically, terminal devices can be classified according to different power levels, and one or more power levels correspond to a type of device; terminal devices can also be classified according to different maximum transmission powers, and one or more maximum transmission powers correspond to one type of equipment. Equipment type.

Exemplarily, terminal devices may be divided into a first device type and a second device type, the first device type may be a terminal device with a normal power level, and the second device type may be a RedCap UE with a low power level. The ordinary power level here may include power levels PC1, PC1.5, PC2, PC3, and PC5 shown in Table 1; the low power level may be a level lower than the power levels PC1, PC1.5, PC2, PC3, and PC5 .

Usually, terminal devices with different power levels or maximum transmit power have different requirements for MCS levels. For example, a terminal device with a higher power level usually uses a higher MCS level to improve data transmission efficiency; a terminal device with a lower power level usually uses a lower MCS level to ensure the reliability of data transmission.

Based on this, in the embodiment of the present application, the terminal device may select a PUSCH resource whose MCS level matches the power level or maximum transmit power of the terminal device from multiple PUSCH resources to obtain the first PUSCH resource. In this way, the terminal device can use the first PUSCH resource to send the first PUSCH in the first message.

In some embodiments, the terminal device may pre-store the correspondence between the MCS level and the power level, or the correspondence between the MCS level and the maximum transmission power. In this way, after receiving the first configuration information, the terminal device can determine the required MCS level according to the power level or maximum transmission power corresponding to its own device type, and then select the most suitable first PUSCH resource according to the determined MCS .

It can be seen that the random access method provided by this application can fully consider the differences of different terminal devices, configure multiple PUSCH resources for the terminal devices, and configure different MCS levels for different PUSCH resources. Based on this, the terminal device may select a first PUSCH resource whose MCS level matches its power level or maximum transmission power from multiple PUSCH resources according to its own needs, and perform random access through the selected first PUSCH resource. In this way, for a terminal device with an ordinary power level, the PUSCH resources of a higher MCS level can be used to transmit the first PUSCH, which improves the data transmission efficiency in the random access process and avoids waste of resources; while for a terminal device with a low power level , the first PUSCH may be transmitted using PUSCH resources of a lower MCS level, so as to improve the reliability of data transmission.

In an embodiment of the present application, the first configuration information is also used to configure multiple RACH resources; wherein, the multiple RACH resources are used for a two-step random access process; the multiple RACH resources are associated with multiple PUSCH resources;

The first message also includes a first preamble sequence; here, the first preamble sequence is sent based on the first RACH resource among the multiple RACH resources, and the first RACH resource refers to the multiple RACH resources that are associated with the first PUSCH resource RACH resources.

It can be understood that the first configuration information may specifically configure multiple RACH resources and multiple PUSCH resources, and there is an association relationship between the multiple RACH resources and the multiple PUSCH resources. In this way, the terminal device can select the first PUSCH resource matching its device type from the multiple PUSCH resources and transmit the MsgA on the first RACH resource associated with the first PUSCH resource.

It should be noted that the multiple RACH resources configured in the first configuration information do not overlap each other, that is, the multiple RACH resources do not overlap each other in the time domain and/or the frequency domain. At the same time, the multiple PUSCH resources configured by the first configuration information do not overlap each other, that is, the multiple PUSCH resources do not overlap each other in the time domain and/or the frequency domain.

Wherein, the association relationship between multiple RACH resources and multiple PUSCH resources may be a one-to-one correspondence relationship, that is, one RACH resource corresponds to one PUSCH resource. In addition, the association relationship between multiple RACH resources and multiple PUSCH resources may also be a one-to-many relationship, that is, one RACH resource corresponds to two PUSCH resources, or one RACH resource corresponds to three PUSCH resources. This embodiment of the present application does not limit it.

In some embodiments, the network device may carry a mapping relationship between multiple RACH resources and multiple PUSCH resources in the first configuration information, so that the terminal device may determine the RACH resources associated with the PUSCH resources according to the mapping relationship. In other embodiments, the terminal device may determine the RACH resource associated with the PUSCH resource according to the pre-stored mapping relationship between multiple RACH resources and multiple PUSCH resources. There is no limitation on how to obtain the relationship.

That is to say, when the terminal device in the embodiment of the present application needs to initiate two-step random access, it may first determine the first PUSCH resource whose MCS level matches the device type of the terminal device from multiple PUSCH resources. Furthermore, the terminal device continues to determine the first RACH resource associated with the first PUSCH resource from the multiple RACH resources. In this way, the terminal device can use the selected first PUSCH resource and first RACH resource to transmit MsgA. That is, the terminal device transmits the first preamble sequence on the first RACH resource, and sends the first PUSCH on the determined first PUSCH resource.

Exemplarily, as shown in FIG. 5 , the network device can configure the first RACH resource and the second RACH resource through the first configuration information, configure the first PUSCH resource and the second PUSCH resource at the same time, and the MCS level corresponding to the first PUSCH resource It is greater than the MCS level corresponding to the second PUSCH resource. In addition, the first RACH resource has an association relationship with the first PUSCH resource, and the second RACH resource has an association relationship with the second PUSCH resource. The first RACH resource and the first PUSCH resource having an association relationship may be used as the first MsgA resource, and the second RACH resource and the second PUSCH resource having an association relationship may be used as the second MsgA resource.

On this basis, for a terminal device of a normal power level, the first MsgA resource can be used to send MsgA in the two-step random access process, that is, the first PUSCH resource with a higher MCS level and the first PUSCH resource corresponding to the first PUSCH resource can be used. The first RACH resource sends MsgA. In addition, for a terminal device with a low power level, use the second MsgA resource to send MsgA in the two-step random access process, that is, use the second PUSCH resource with a lower MCS level and the second RACH resource corresponding to the second PUSCH resource Send MsgA.

In a possible implementation manner, the network device may configure multiple preamble sequence sets for the terminal device. The multiple sets of preamble sequences here may be associated with multiple RACH resources. In the embodiment of the present application, the first preamble transmitted on the first RACH resource may be any preamble in the preamble set associated with the first RACH resource. Specifically, after determining the first RACH resource, the terminal device may randomly select a preamble from the preamble set corresponding to the first RACH resource, and send it to the network device as the first preamble. In this way, the network device can feed back a random access response (Random Access Response, RAR) based on the first preamble sequence.

In another possible implementation manner, the network device may configure the first preamble set for the terminal device. In this way, the first preamble transmitted on the first RACH resource may be any preamble in the first preamble set. That is to say, multiple RACH resources and multiple PUSCH resources can share one preamble set. The network device may perform a random access response according to the first preamble sequence received on the first RACH resource.

In some embodiments, the network device may monitor the MsgA sent by the terminal device on multiple RACH resources and multiple PUSCH resources configured in the first configuration information, and respond to the monitored MsgA. Exemplarily, when the network device successfully decodes the first preamble sequence on the first RACH resource, and decodes the first PUSCH resource associated with the first RACH resource to obtain the first PUSCH, the network device may feed back MsgB to the terminal device , and carry a successful random access response (ie success RAR) in MsgB. When the network device successfully decodes the first RACH resource to obtain the first preamble sequence, but fails to successfully decode the first PUSCH resource associated with the first RACH resource to obtain the first PUSCH, the network device may send MsgB to the terminal device, and Carry the return indication (i.e. fallback RAR) in MsgB. It should be noted that, in addition to the above success RAR or fallback RAR, MsgB also includes a physical downlink control channel (Physical Downlink Control Channel, PDCCH) scrambled by the first radio network temporary identifier (Radio Network Temporary Identifier, RNTI). Here, the first RNTI may be determined according to the first RACH resource and the first preamble sequence used when the terminal device sends the MsgA.

Correspondingly, after sending the MsgA, the terminal device may monitor the PDCCH scrambled by the first RNTI within the random access response time window. When the terminal device receives the PDCCH scrambled by the first RNTI within the random access response time window, the terminal device may determine that the MsgB is sent by the network device for itself.

In the embodiment of the present application, there are multiple ways for the network device to configure multiple RACH resources, and three configuration ways are introduced below.

method one:

In some embodiments, the first configuration information includes first information and second information, the first information is used to indicate one time domain resource, and the second information is used to indicate multiple frequency domain resources; wherein, among the multiple RACH resources Each RACH resource is determined based on the time domain resource and one frequency domain resource among the multiple frequency domain resources.

That is to say, a network device may configure one time domain resource and multiple frequency domain resources. In this way, each RACH resource configured by the first configuration information may be composed of the above-mentioned one time domain resource and one frequency domain resource among the multiple frequency domain resources.

It should be noted that the multiple frequency domain resources do not overlap each other in the frequency domain. Moreover, the number of multiple frequency domain resources is the same as the number of multiple RACH resources.

Exemplarily, if the network device needs to configure two RACH resources, the network device can configure the first time domain resource through the first information in the first configuration information, and configure the first frequency domain resource and the second frequency domain resource through the second information . In this way, among the two configured RACH resources, the first RACH resource is composed of the first time domain resource and the first frequency domain resource, and the second RACH resource is composed of the first time domain resource and the second frequency domain resource.

Method 2:

In some embodiments, the first configuration information includes third information and fourth information, the third information is used to indicate one frequency domain resource, and the fourth information is used to indicate multiple time domain resources; wherein, among the multiple RACH resources Each RACH resource is determined based on the frequency domain resource and one time domain resource among the multiple time domain resources.

That is to say, a network device can configure one frequency domain resource and multiple time domain resources. In this way, each RACH resource configured by the first configuration information may be composed of the above-mentioned one frequency domain resource and one time domain resource among the multiple time domain resources.

It should be noted that the multiple time domain resources do not overlap each other in the time domain. Moreover, the number of multiple time domain resources is the same as the number of multiple RACH resources.

Exemplarily, if the network device needs to configure two RACH resources, the network device can configure the first frequency domain resource through the third information in the first configuration information, and configure the first time domain resource and the second time domain resource through the fourth information . In this way, among the two configured RACH resources, the first RACH resource is composed of the first time domain resource and the first frequency domain resource, and the second RACH resource is composed of the second time domain resource and the first frequency domain resource.

Method 3:

In some embodiments, the first configuration information may include fifth information and sixth information, the fifth information is used to indicate multiple time domain resources, and the sixth information is used to indicate multiple frequency domain resources; where the multiple time domain resources There is an association relationship between the resource and the multiple frequency domain resources; each RACH resource in the multiple RACH resources is determined based on the time domain resource and the frequency domain resource with the association relationship.

That is to say, the network device can configure multiple time domain resources and multiple frequency domain resources. In this way, each RACH resource configured by the first configuration information may consist of a pair of time-domain resources and frequency-domain resources that have an association relationship.

Here, the association relationship between multiple time-domain resources and multiple frequency-domain resources may be a one-to-one relationship, that is, one time-domain resource corresponds to one frequency-domain resource. In addition, the relationship between multiple time domain resources and multiple frequency domain resources can also be a one-to-many relationship, for example, one time domain resource corresponds to two frequency domain resources, or two time domain resources correspond to one frequency domain resource. Domain resources. The embodiment of the present application does not limit the association relationship.

It should be noted that the foregoing multiple time domain resources do not overlap each other in the time domain, and/or the multiple frequency domain resources do not overlap each other in the frequency domain. In addition, in the embodiment of the present application, the number of multiple time domain resources is the same as the number of multiple RACH resources, and/or, the number of multiple frequency domain resources is the same as the number of multiple RACH resources.

Exemplarily, if the network device needs to configure two RACH resources, the network device can configure the first time domain resource and the second time domain resource through the fifth information in the first configuration information, and the sixth information configures the first frequency domain resource and a second frequency domain resource. Wherein, the first time domain resource is associated with the first frequency domain resource, and the second time domain resource is associated with the second frequency domain resource. In this way, the first RACH resource among the two configured RACH resources is composed of the first time domain resource and the first frequency domain resource, and correspondingly, the second RACH resource is composed of the second time domain resource and the second frequency domain resource.

To sum up, the network device can configure multiple RACH resources and multiple PUSCH resources for the terminal device, so that the terminal device can select an appropriate RACH resource to send the first preamble and an appropriate PUSCH resource to send the first preamble according to its own needs. PUSCH. In this way, the reliability of MsgA transmission during the random access process is improved.

In an embodiment of the present application, the first configuration information is also used to configure the first RACH resource and multiple preamble sets; wherein, the first RACH resource is used for a two-step random access process; the multiple preamble sets and multiple A PUSCH resource has an association relationship;

The first message also includes a first preamble sequence; here, the first preamble sequence is sent based on the first RACH resource; the first preamble sequence belongs to a first preamble sequence set in multiple preamble sequence sets, and the first preamble sequence set refers to multiple A set of preamble sequences associated with the first PUSCH resource in the set of preamble sequences.

It can be understood that, in the embodiment of the present application, while configuring multiple PUSCH resources, the network device may only configure one RACH resource (ie, the first RACH resource) in order to save uplink spectrum resources. Moreover, in order to enable the terminal device to distinguish whether the RAR fed back by the network device is a random access response for itself, the network device may also configure multiple preamble sets for the first RACH resource.

In this way, the terminal device can transmit MsgA on the first RACH resource and the first PUSCH resource matching the device type of the terminal device. In addition, the first preamble transmitted on the first RACH resource may be any preamble randomly selected by the terminal device in the first preamble set, and the first preamble set is a plurality of preamble sets configured by the network device A set that has an association relationship with the first PUSCH resource.

In some embodiments, the first configuration information may include seventh information and eighth information, the seventh information is used to indicate a time domain resource, and the eighth information is used to indicate a frequency domain resource; based on this, the first RACH resource Determined based on time domain resources and frequency domain resources. It can be understood that the network device may configure a time domain resource and a frequency domain resource for the terminal device to implement configuration of the first RACH resource.

It should be noted that the multiple leader sequence sets do not overlap with each other. That is, the leader sequences included in each leader sequence set are different, or partly different.

In the embodiment of the present application, multiple sets of preamble sequences are associated with multiple PUSCH resources. The association relationship between multiple preamble sequence sets and multiple PUSCH resources may be a one-to-one correspondence, that is, one preamble sequence set corresponds to one PUSCH resource.

Specifically, when the terminal device in the embodiment of the present application needs to initiate two-step random access, it may first determine the first PUSCH resource whose MCS level matches the device type of the terminal device from multiple PUSCH resources. Furthermore, the terminal device determines the first preamble set associated with the first PUSCH resource from the multiple preamble sets. Next, the terminal device may select the first preamble sequence from the first preamble sequence set, transmit the first preamble sequence on the first RACH resource, and send the first PUSCH on the determined first PUSCH resource at the same time, so as to initiate a random access enter.

Exemplarily, as shown in FIG. 6 , the network device may configure the first RACH resource through the first configuration information, and simultaneously configure the first preamble set, the second preamble set, the first PUSCH resource, and the second PUSCH resource. Wherein, the MCS level of the first PUSCH resource is higher than the MCS level of the second PUSCH resource, and the first set of preamble sequences is associated with the first PUSCH resource, and the second set of preamble sequences is associated with the second PUSCH resource. Here, the first RACH resource, and the associated first PUSCH resource and first preamble sequence set may be used as the first MsgA resource. In addition, the first RACH resource, the second PUSCH resource and the second preamble sequence set having an association relationship may also be used as the second MsgA resource.

On this basis, if the terminal device is a terminal device of ordinary power level, the first MsgA resource can be used to send MsgA in the two-step random access process, that is, the first RACH resource and the first PUSHC resource with a higher MCS level can be used , and the first preamble set associated with the first PUSCH resource sends MsgA. Specifically, the terminal device transmits a preamble randomly selected from the first preamble set (that is, the first preamble) on the first RACH resource, and transmits the first PUSCH on the first PUSCH resource.

In addition, if the terminal device is a low-power terminal device, the second MsgA resource may be used to send the MsgA during the two-step random access process. That is, the MsgA is sent by using the first RACH resource, the second PUSCH resource with a lower MCS level, and the second preamble sequence set associated with the second PUSCH resource. Specifically, the terminal device transmits a preamble randomly selected from the second preamble set (that is, the first preamble) on the first RACH resource, and transmits the first PUSCH on the second PUSCH resource.

In some embodiments, the network device may monitor the MsgA sent by the terminal device on the first RACH resource configured in the first configuration information and multiple PUSCH resources, and respond to the monitored MsgA. Exemplarily, when the network device successfully decodes the first preamble sequence on the first RACH resource, and decodes the first PUSCH resource associated with the first RACH resource to obtain the first PUSCH, the network device may feed back MsgB to the terminal device , and carry successRAR in MsgB. When the network device successfully decodes the first RACH resource to obtain the first preamble sequence, but fails to successfully decode the first PUSCH resource associated with the first RACH resource to obtain the first PUSCH, the network device may send MsgB to the terminal device, and Carry fallback RAR in MsgB. It should be noted that, in addition to the above success RAR or fallback RAR, the MsgB also includes the PDCCH scrambled by the first RNTI. Here, the first RNTI may be determined according to the first RACH resource and the first preamble sequence used when the terminal device sends the MsgA.

To sum up, the network device can configure the first RACH resource, multiple PUSCH resources, and multiple preamble sequence sets associated with multiple PUSCH resources for the terminal device, so that the terminal device can select an appropriate one according to its own needs. The first PUSCH resource and the first set of preamble sequences, and transmit MsgA by using the first RACH resource, the first set of preamble sequences and the first PUSCH resource. In this way, while saving uplink spectrum resources, the reliability of MsgA transmission during the random access process is improved.

In an embodiment of the present application, the first configuration information is also used to configure the first RACH resource and the first preamble set; wherein, the first RACH resource is used for a two-step random access procedure; the first preamble is based on the first RACH resource transmission; the first preamble sequence belongs to the first preamble sequence set.

It can be understood that, in the embodiment of the present application, while the network device configures multiple PUSCH resources, in order to save uplink spectrum resources and preamble codebook resources, only one RACH resource and one preamble set (that is, the first RACH resource and first preamble set). In this way, after the terminal device selects the first PUSCH resource matching its device type, it transmits the first PUSCH through the first PUSCH resource, and at the same time, transmits a preamble randomly selected from the first preamble set through the first RACH resource (i.e. the first preamble).

Exemplarily, as shown in FIG. 7, the network device may configure the first RACH resource, the first PUSCH resource and the second PUSCH resource through the first configuration information, wherein the MCS level of the first PUSCH resource is higher than that of the second PUSCH resource. MCS level. In addition, the first configuration information also configures the first preamble set for the first RACH resource. Here, the first RACH resource, the first set of preamble sequences, and the first PUSCH resource may be used as the first MsgA resource, and the first RACH resource, the first set of preamble sequences, and the second PUSCH resource may be used as the second MsgA resource.

On this basis, if the terminal device is a terminal device of ordinary power level, the first MsgA resource can be used to send MsgA in the two-step random access process, that is, the first RACH resource, the first preamble sequence set, and the MCS level The higher first PUSCH resource sends MsgA. Specifically, the terminal device transmits a preamble randomly selected from the first preamble set (that is, the first preamble) on the first RACH resource, and transmits the first PUSCH on the first PUSCH resource.

In addition, if the terminal device is a low-power terminal device, the second MsgA resource can be used to send MsgA in the two-step random access process, that is, the first RACH resource, the first preamble sequence set, and the MCS with a lower MCS level can be used to send MsgA. The second PUSCH resource sends MsgA. Specifically, the terminal device transmits a preamble randomly selected from the first preamble set (that is, the first preamble) on the first RACH resource, and transmits the first PUSCH on the second PUSCH resource.

In some embodiments, the first configuration information may include seventh information and eighth information, the seventh information is used to indicate a time domain resource, and the eighth information is used to indicate a frequency domain resource; based on this, the first RACH resource Determined based on the time domain resources and frequency domain resources. It can be understood that the network device may configure a time domain resource and a frequency domain resource for the terminal device to implement configuration of the first RACH resource.

In some embodiments, the network device may monitor the MsgA sent by the terminal device on the first RACH resource configured in the first configuration information and multiple PUSCH resources, and respond to the monitored MsgA. Exemplarily, when the network device successfully decodes the first RACH resource to obtain the first preamble sequence, and decodes the first PUSCH resource associated with the first RACI resource to obtain the first PUSCH, the network device may feed back the MsgB to the terminal device , and carry a successful random access response (ie successRAR) in MsgB. When the network device successfully decodes the first RACH resource to obtain the first preamble sequence, but fails to successfully decode the first PUSCH resource associated with the first RACH resource to obtain the first PUSCH, the network device may send MsgB to the terminal device, and Carry the bounce indication in MsgB.

It should be noted that in the embodiment of the present application, since terminal devices of different device types all use the same set of RACH resources and the same set of preamble sequences, multiple terminal devices of different device types may use the same RACH time-frequency Resources and the same preamble sequence are randomly accessed, so that the terminal device cannot confirm whether the MsgB fed back by the network device is aimed at itself.

Based on this, referring to the second schematic flow diagram of the random access method shown in FIG. 8 , this embodiment of the present application may further include the following steps:

Step 430, the terminal device receives the scheduling information sent by the network device, and the RAR information scheduled by the scheduling information; wherein, the scheduling information and/or the RAR information carries first indication information, and the first indication information is used to indicate the first device type;

Step 440: In the case that the first device type is the same as the device type of the terminal device, the terminal device determines that the RAR information is information for the terminal device.

Here, the scheduling information may be downlink control information (Downlink Control Information, DCI) carried by a physical downlink control channel (Physical Downlink Control Channel, PDCCH). In addition, the DCI can schedule a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), and carry RAR information through the PDSCH.

It can be understood that, in the embodiment of the present application, when the network device configures a first RACH resource and a first preamble sequence set, the network device may respectively perform random access responses for terminal devices of different device types, that is, send The RAR information and the scheduling information for scheduling the RAR information, and the scheduling information of the RAR information and/or the RAR information carry the first indication information indicating the first device type.

In this way, after the terminal device descrambles the scheduling information based on the first RNTI, it also needs to determine whether the RAR information scheduled by the scheduling information is aimed at itself based on the first device type indicated by the first indication information. Specifically, when the first device type indicated by the first indication information is the same as the device type of the terminal device, it may be determined that the RAR information is information aimed at itself. In addition, when the first device type indicated by the first indication information is different from the device type of the terminal device, it is determined that the RAR information is not information for the user.

In some embodiments, the first indication information indicates the first device type, and may specifically indicate a power level or a maximum transmit power. For example, the first indication information may indicate whether the RAR information is aimed at a terminal device of a normal power level or a terminal device of a low power level.

Here, the first indication information is carried in the scheduling information of the scheduling RAR information, and it can be understood that the first indication information may be carried in the DCI of the MsgB PDCCH. Exemplarily, the network device may explicitly indicate the device type targeted by the MsgB through the value of a preset field in the DCI. Specifically, when the value of the preset field is 0, it indicates that the MsgB is aimed at the terminal equipment of the normal power level; when the value of the preset field is 1, it indicates that the MsgB is aimed at the low power Class terminal equipment.

In addition, the first indication information is carried in the RAR. It can be understood that the first indication information may be carried in the uplink grant (UL grant) included in the RAR load information for indicating Msg3 resource allocation. Exemplarily, the network device may indicate the device type targeted by the MsgB through the MCS level corresponding to the UL grant in the RAR. It can be understood that the MCS corresponding to the ULgrant in the RAR is the same as the MCS level corresponding to the PUSCH resource used by the terminal device to transmit the MsgA.

Optionally, the first indication information may only need to be carried when the network sends a fallback RAR.

To sum up, in the random access method provided by the embodiment of the present application, the network device can configure the first RACH resource, the first set of preamble sequences, and multiple PUSCH resources for the terminal device, so that the terminal device can select An appropriate first PUSCH resource, and then use the first RACH resource, the first preamble sequence set and the first PUSCH resource to transmit MsgA. In this way, while saving uplink spectrum resources and codebook resources, the reliability of MsgA transmission during the random access process is improved.

The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately. As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application. For another example, on the premise of no conflict, the various embodiments described in this application and/or the technical features in each embodiment can be combined with the prior art arbitrarily, and the technical solutions obtained after the combination should also fall within the scope of this application. protected range.

It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application. The implementation of the examples constitutes no limitation. In addition, in this embodiment of the application, the terms "downlink", "uplink" and "sidelink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is sent from the station The first direction to the user equipment in the cell, "uplink" is used to indicate that the signal or data transmission direction is the second direction sent from the user equipment in the cell to the station, and "side line" is used to indicate that the signal or data transmission direction is A third direction sent from UE1 to UE2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Fig. 9 is a schematic diagram of the first structural composition of a random access device provided by an embodiment of the present application, which is applied to a terminal device. As shown in Fig. 9, the random access device includes:

The first receiving unit 901 is configured to receive first configuration information; the first configuration information is used to configure multiple physical uplink shared channel PUSCH resources; wherein, the multiple PUSCH resources are all used for a two-step random access process ; Different PUSCH resources correspond to different modulation and coding strategy MCS levels;

The first sending unit 902 is configured to send a first message, where the first message includes a first PUSCH; where the first PUSCH is sent based on a first PUSCH resource among the multiple PUSCH resources, and the first The MCS level corresponding to the PUSCH resource matches the device type of the terminal device.

In some embodiments, the first configuration information is also used to configure a plurality of random access channel RACH resources; wherein, the plurality of RACH resources are all used for a two-step random access process; the plurality of RACH resources and The multiple PUSCH resources have an association relationship;

The first message further includes a first preamble sequence; the first preamble sequence is sent based on a first RACH resource among the multiple RACH resources, and the first RACH resource refers to, among the multiple RACH resources RACH resources associated with the first PUSCH resource.

In some embodiments, the first configuration information includes first information and second information, the first information is used to indicate one time domain resource, and the second information is used to indicate multiple frequency domain resources;

Wherein, each RACH resource in the multiple RACH resources is determined based on the time domain resource and one frequency domain resource among the multiple frequency domain resources.

In some embodiments, the first configuration information includes third information and fourth information, the third information is used to indicate one frequency domain resource, and the fourth information is used to indicate multiple time domain resources;

Wherein, each RACH resource in the plurality of RACH resources is determined based on the frequency domain resource and one time domain resource in the plurality of time domain resources.

In some embodiments, the first configuration information includes fifth information and sixth information, the fifth information is used to indicate multiple time domain resources, and the sixth information is used to indicate multiple frequency domain resources; There is an association relationship between the multiple time domain resources and the multiple frequency domain resources;

Wherein, each RACH resource among the plurality of RACH resources is determined based on time domain resources and frequency domain resources having an association relationship.

In some embodiments, the first configuration information is also used to configure a first RACH resource and a plurality of preamble sets; wherein, the first RACH resource is used for a two-step random access procedure; the plurality of preambles The sequence set has an association relationship with the multiple PUSCH resources;

The first message further includes a first preamble sequence; the first preamble sequence is sent based on the first RACH resource; the first preamble sequence belongs to a first preamble sequence set in the plurality of preamble sequence sets, The first set of preambles refers to a set of preambles in the plurality of sets of preambles that is associated with the first PUSCH resource.

In some embodiments, the first configuration information is also used to configure a first RACH resource and a first set of preamble sequences; wherein, the first RACH resource is used for a two-step random access procedure;

The first message further includes a first preamble sequence; the first preamble sequence is sent based on the first RACH resource; and the first preamble sequence belongs to the first preamble sequence set.

In some embodiments, the first configuration information includes seventh information and eighth information, the seventh information is used to indicate a time domain resource, and the eighth information is used to indicate a frequency domain resource;

Wherein, the first RACH resource is determined based on the time domain resource and the frequency domain resource.

In some embodiments, the first receiving unit 901 is further configured to receive scheduling information and RAR information scheduled by the scheduling information; wherein, the scheduling information and/or the RAT information carry first indication information , the first indication information is used to indicate the first device type;

In some embodiments, the random access apparatus further includes a determining unit; the determining unit may be configured to determine the RAR information when the first device type is the same as the device type of the terminal device is the information for the terminal device.

In some embodiments, different device types correspond to different power levels, and/or different device types correspond to different maximum transmission powers.

In some embodiments, the first configuration information is carried in system information SIB.

Fig. 10 is a schematic diagram of the second structural composition of the random access device provided by the embodiment of the present application, which is applied to network equipment. As shown in Fig. 10, the random access device includes:

The second sending unit 1001 is configured to send first configuration information; the first configuration information is used to configure multiple physical uplink shared channel PUSCH resources; wherein, the multiple PUSCH resources are all used for a two-step random access process ; Different PUSCH resources correspond to different modulation and coding strategy MCS levels;

The second receiving unit 1002 is configured to receive a first message sent by a terminal device; the first message includes a first PUSCH; wherein the first PUSCH is received based on a first PUSCH resource among the plurality of PUSCH resources; the The MCS level corresponding to the first PUSCH resource matches the device type of the terminal device.

The first message further includes a first preamble sequence; the first preamble sequence is received based on a first RACH resource among the multiple RACH resources, and the first RACH resource is the same as the first RACH resource among the multiple RACH resources. The first PUSCH resource has an associated RACH resource.

In some embodiments, the first configuration information includes first information and second information; the first information is used to indicate one time domain resource, and the second information is used to indicate multiple frequency domain resources;

In some embodiments, the first configuration information includes third information and fourth information, the third information is used to indicate one frequency domain resource; the fourth information is used to indicate multiple time domain resources;

In some embodiments, the first configuration information is also used to configure a first RACH resource and multiple preamble sets; the first RACH resource is used for a two-step random access procedure; the multiple preamble sets have an association relationship with the multiple PUSCH resources;

The first message further includes a first preamble sequence; the first preamble sequence is received based on the first RACH resource; the first preamble sequence belongs to a first preamble sequence set in the plurality of preamble sequence sets, The first set of preambles refers to a set of preambles in the plurality of sets of preambles that is associated with the first PUSCH resource.

The first message further includes a first preamble sequence; the first preamble sequence is received based on the first RACH resource; and the first preamble sequence belongs to the first preamble sequence set.

In some embodiments, the second sending unit 1001 is further configured to send scheduling information and RAR information scheduled by the scheduling information; the scheduling information and the RAR information carry first indication information, and the first The indication information is used to indicate the first device type.

Those skilled in the art should understand that the relevant description of the above random access apparatus in the embodiment of the present application may be understood by referring to the relevant description of the random access method in the embodiment of the present application.

FIG. 11 is a schematic structural diagram of a communication device 1100 provided by an embodiment of the present application. The communication device may be a terminal device or a network device. The communication device 1100 shown in FIG. 11 includes a processor 1110, and the processor 1110 can invoke and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 11 , the communication device 1100 may further include a memory 1120 . Wherein, the processor 1110 can invoke and run a computer program from the memory 1120, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1120 may be an independent device independent of the processor 1110 , or may be integrated in the processor 1110 .

Optionally, as shown in FIG. 11 , the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices, specifically, to send information or data to other devices, or to receive other Information or data sent by the device.

Wherein, the transceiver 1130 may include a transmitter and a receiver. The transceiver 1130 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 1100 may specifically be the network device of the embodiment of the present application, and the communication device 1100 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 1100 may specifically be the mobile terminal/terminal device of the embodiment of the present application, and the communication device 1100 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , which will not be repeated here.

FIG. 12 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1200 shown in FIG. 12 includes a processor 1210, and the processor 1210 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 12 , the chip 1200 may further include a memory 1220 . Wherein, the processor 1210 can invoke and run a computer program from the memory 1220, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1220 may be an independent device independent of the processor 1210 , or may be integrated in the processor 1210 .

Optionally, the chip 1200 may also include an input interface 1230 . Wherein, the processor 1210 can control the input interface 1230 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1200 may also include an output interface 1240 . Wherein, the processor 1210 can control the output interface 1240 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, here No longer.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

Fig. 13 is a schematic block diagram of a communication system 1300 provided by an embodiment of the present application. As shown in FIG. 13 , the communication system 1300 includes a terminal device 1310 and a network device 1320 .

Wherein, the terminal device 1310 can be used to realize the corresponding functions realized by the terminal device in the above method, and the network device 1320 can be used to realize the corresponding functions realized by the network device in the above method. .

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, the Let me repeat.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods of the embodiments of the present application, For the sake of brevity, details are not repeated here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , which will not be repeated here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program is run on the computer, the computer executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device For the sake of brevity, the corresponding process will not be repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disc, etc., which can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A random access method applied to a terminal device, the method comprising:

Receive first configuration information; the first configuration information is used to configure multiple physical uplink shared channel PUSCH resources; wherein, the multiple PUSCH resources are all used for a two-step random access process; different PUSCH resources correspond to different modulations MCS grade with coding strategy;

Sending a first message, where the first message includes a first PUSCH; wherein, the first PUSCH is sent based on a first PUSCH resource among the multiple PUSCH resources, and the MCS level corresponding to the first PUSCH resource is the same as the match the device type of the terminal device described above.
The method according to claim 1, wherein the first configuration information is also used to configure multiple random access channel RACH resources; wherein the multiple RACH resources are all used for a two-step random access process;

The multiple RACH resources are associated with the multiple PUSCH resources;

The first preamble sequence is sent based on a first RACH resource among the multiple RACH resources, where the first RACH resource is an RACH resource that is associated with the first PUSCH resource among the multiple RACH resources.
The method according to claim 2, wherein the first configuration information includes first information and second information, the first information is used to indicate a time domain resource, and the second information is used to indicate a plurality of frequency domain resources domain resource;

Wherein, each RACH resource in the multiple RACH resources is determined based on the time domain resource and one frequency domain resource among the multiple frequency domain resources.
The method according to claim 2, wherein the first configuration information includes third information and fourth information, the third information is used to indicate one frequency domain resource, and the fourth information is used to indicate multiple time domain resources. domain resource;

Wherein, each RACH resource in the plurality of RACH resources is determined based on the frequency domain resource and one time domain resource in the plurality of time domain resources.
The method according to claim 2, wherein the first configuration information includes fifth information and sixth information, the fifth information is used to indicate multiple time domain resources, and the sixth information is used to indicate multiple frequency domain resources; there is an association relationship between the multiple time domain resources and the multiple frequency domain resources;

Wherein, each RACH resource among the plurality of RACH resources is determined based on time domain resources and frequency domain resources having an association relationship.
The method according to claim 1, wherein the first configuration information is also used to configure a first RACH resource and a plurality of preamble sets; wherein the first RACH resource is used for a two-step random access procedure; The multiple sets of preamble sequences are associated with the multiple PUSCH resources;

The first message further includes a first preamble sequence; the first preamble sequence is sent based on the first RACH resource; the first preamble sequence belongs to a first preamble sequence set in the plurality of preamble sequence sets, The first set of preamble sequences is a set of preamble sequences associated with the first PUSCH resource among the multiple sets of preamble sequences.
The method according to claim 1, wherein the first configuration information is also used to configure a first RACH resource and a first preamble set; wherein the first RACH resource is used for a two-step random access procedure;

The first message further includes a first preamble sequence; the first preamble sequence is sent based on the first RACH resource; and the first preamble sequence belongs to the first preamble sequence set.
The method according to claim 6 or 7, wherein the first configuration information includes seventh information and eighth information, the seventh information is used to indicate a time domain resource, and the eighth information is used to indicate a frequency domain resources;

Wherein, the first RACH resource is determined based on the time domain resource and the frequency domain resource.
The method according to claim 7 or 8, wherein the method further comprises:

receiving scheduling information, and random access response RAR information scheduled by the scheduling information; wherein, the scheduling information and/or the RAR information carries first indication information, and the first indication information is used to indicate the first device type;

If the first device type is the same as the device type of the terminal device, it is determined that the RAR information is information for the terminal device.
The method according to any one of claims 1-9, wherein different device types correspond to different power levels, and/or different device types correspond to different maximum transmission powers.
The method according to any one of claims 1-10, wherein the first configuration information is carried in system information (SIB).
A random access method applied to a network device, the method comprising:

Sending first configuration information; the first configuration information is used to configure multiple physical uplink shared channel PUSCH resources; wherein, the multiple PUSCH resources are used for a two-step random access process; different PUSCH resources correspond to different modulations MCS grade with coding strategy;

receiving a first message sent by a terminal device; the first message includes a first PUSCH; wherein the first PUSCH is received based on a first PUSCH resource among the plurality of PUSCH resources; the MCS level corresponding to the first PUSCH resource, Match the device type of the terminal device.
The method according to claim 12, wherein the first configuration information is also used to configure multiple random access channel RACH resources; wherein the multiple RACH resources are all used for a two-step random access process; the Multiple RACH resources are associated with the multiple PUSCH resources;

The first message further includes a first preamble sequence; the first preamble sequence is received based on a first RACH resource among the multiple RACH resources, and the first RACH resource is the same as the first RACH resource among the multiple RACH resources. The first PUSCH resource has an associated RACH resource.
The method according to claim 13, wherein the first configuration information includes first information and second information; the first information is used to indicate a time domain resource, and the second information is used to indicate a plurality of frequency resources domain resource;

Wherein, each RACH resource in the multiple RACH resources is determined based on the time domain resource and one frequency domain resource among the multiple frequency domain resources.
The method according to claim 13, wherein the first configuration information includes third information and fourth information, the third information is used to indicate a frequency domain resource; the fourth information is used to indicate a plurality of time domain resources domain resource;

Wherein, each RACH resource in the plurality of RACH resources is determined based on the frequency domain resource and one time domain resource in the plurality of time domain resources.
The method according to claim 13, wherein the first configuration information includes fifth information and sixth information, the fifth information is used to indicate multiple time domain resources, and the sixth information is used to indicate multiple frequency domain resources; there is an association relationship between the multiple time domain resources and the multiple frequency domain resources;

Wherein, each RACH resource among the plurality of RACH resources is determined based on time domain resources and frequency domain resources having an association relationship.
The method according to claim 12, wherein the first configuration information is also used to configure a first RACH resource and a plurality of preamble sets; the first RACH resource is used for a two-step random access procedure; the Multiple sets of preamble sequences are associated with the multiple PUSCH resources;

The first message further includes a first preamble sequence; the first preamble sequence is received based on the first RACH resource; the first preamble sequence belongs to a first preamble sequence set in the plurality of preamble sequence sets, The first set of preamble sequences is a set of preamble sequences associated with the first PUSCH resource among the multiple sets of preamble sequences.
The method according to claim 12, wherein the first configuration information is also used to configure a first RACH resource and a first preamble set; wherein the first RACH resource is used for a two-step random access procedure;

The first preamble sequence is sent based on the first RACH resource; the first preamble sequence belongs to the first preamble sequence set.
According to the method according to claim 17 or 18, the first configuration information includes seventh information and eighth information, the seventh information is used to indicate the first time domain resource, and the eighth information is used to indicate the first frequency domain resources;

Wherein, the first RACH resource is determined based on the first time domain resource and the first frequency domain resource.
A method according to claim 17 or 18, wherein,

Send scheduling information, and random access response RAR information scheduled by the scheduling information; wherein, the scheduling information and/or the RAR information carries first indication information, and the first indication information is used to indicate the first device type .
The method according to any one of claims 12-20, wherein different device types correspond to different power levels, and/or different device types correspond to different maximum transmission powers.
The method according to any one of claims 12-21, wherein the first configuration information is carried in system information (SIB).
A random access device, applied to terminal equipment, comprising:

The first receiving unit is configured to receive first configuration information; the first configuration information is used to configure multiple physical uplink shared channel PUSCH resources; wherein, the multiple PUSCH resources are all used for a two-step random access process; Different PUSCH resources correspond to different modulation and coding strategy MCS levels;

The first sending unit is configured to send a first message, where the first message includes a first PUSCH; where the first PUSCH is sent based on a first PUSCH resource among the plurality of PUSCH resources, and the first PUSCH The MCS level corresponding to the resource matches the device type of the terminal device.
A random access device applied to network equipment, comprising:

The second sending unit is configured to send first configuration information; the first configuration information is used to configure multiple physical uplink shared channel PUSCH resources; wherein, the multiple PUSCH resources are all used for a two-step random access process; Different PUSCH resources correspond to different modulation and coding strategy MCS levels;

The second receiving unit is configured to receive a first message sent by a terminal device; the first message includes a first PUSCH; wherein the first PUSCH is received based on a first PUSCH resource among the plurality of PUSCH resources; the second The MCS level corresponding to a PUSCH resource matches the device type of the terminal device.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute the computer program described in any one of claims 1 to 11 Methods.
A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to invoke and run the computer program stored in the memory, and execute the computer program described in any one of claims 12 to 22 Methods.
A chip, comprising: a processor, configured to invoke and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 11.
A chip, comprising: a processor, configured to invoke and run a computer program from a memory, so that a device installed with the chip executes the method as claimed in any one of claims 12 to 22.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 11.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 12-22.
A computer program product comprising computer program instructions for causing a computer to perform the method as claimed in any one of claims 1 to 11.
A computer program product comprising computer program instructions causing a computer to perform the method as claimed in any one of claims 12 to 22.
A computer program that causes a computer to execute the method according to any one of claims 1 to 11.
A computer program that causes a computer to perform the method as claimed in any one of claims 12 to 22.