WO2020191679A1

WO2020191679A1 - Random access method, terminal device, and network device

Info

Publication number: WO2020191679A1
Application number: PCT/CN2019/079928
Authority: WO
Inventors: 石聪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-10-01
Also published as: CN112806088B; CN112806088A

Abstract

Embodiments of the present application provide a random access method, a terminal device, and a network device. In a two-step random access process, the terminal device in an idle state or a deactivated state can blindly detect Msg B on the basis of a first RNTI after sending Msg A. The random access method comprises: the terminal device sends first information in the two-step random access process; the terminal device monitors a PDCCH scrambled by the first RNTI, the PDCCH being used for scheduling a PDSCH carrying second information in the two-step random access process.

Description

Random access method, terminal equipment and network equipment

Technical field

The embodiments of the present application relate to the field of communications, and more specifically, to random access methods, terminal devices, and network devices.

Background technique

In the New Radio (NR) system, two-step random access can be supported. In the two-step random access process, the message 1 (Message 1, Msg 1) and message 3 in the four-step random access process can be combined. (Msg 3) is sent as the first message (Message A, MsgA) in the two-step random access process, and message 2 (Msg 2) and message 2 (Msg 4) in the four-step random access process are used as two The second message (Message B, MsgB) in the random access process is sent. However, since the terminal equipment in the idle state or in the deactivated state does not have the Cell Radio Network Temporary Identity (C-RNTI) information during the two-step random access process, what happens after the terminal equipment sends the MsgA? Blind MsgB inspection is an urgent problem to be solved.

Summary of the invention

The embodiments of the application provide a random access method, terminal equipment and network equipment. In two-step random access, the terminal equipment in the idle state or in the deactivated state can be blindly detected based on the first RNTI after sending Msg A Msg B.

In the first aspect, a random access method is provided, which includes:

The terminal device sends the first information in the two-step random access process;

The terminal device monitors the Physical Downlink Control Channel (PDCCH) scrambled by the first RNTI, and the PDCCH is used to schedule the PDSCH that carries the second information in the two-step random access process.

It should be noted that after the terminal device monitors the PDCCH scrambled by the first radio network temporary identifier (Radio Network Temporary Identity, RNTI), the terminal device can determine whether the PDCCH is scheduled according to the first RNTI. A physical downlink shared channel (PDSCH) sent to itself, and the PDSCH carries the second information in the two-step random access process.

Optionally, the terminal device is in a deactivated state or an idle state.

It should be understood that the first RNTI is a newly defined RNTI, which is different from other existing RNTIs, so as to avoid conflicts with existing random access RNTIs (Random Access RNTI, RA-RNTI).

In the second aspect, a random access method is provided, which includes:

The network device receives the first information in the two-step random access process;

The network device sends the PDCCH scrambled by the first RNTI, and the PDCCH is used to schedule the PDSCH that carries the second information in the two-step random access process.

In a third aspect, a terminal device is provided, which is used to execute the method in the first aspect or its implementation manners.

Specifically, the terminal device includes a functional module for executing the method in the foregoing first aspect or each implementation manner thereof.

In a fourth aspect, a network device is provided, which is configured to execute the method in the second aspect or its implementation manners.

Specifically, the network device includes a functional module for executing the method in the foregoing second aspect or each implementation manner thereof.

In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation modes.

In a sixth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned second aspect or each of its implementation modes.

In a seventh aspect, a device is provided for implementing any one of the first aspect to the second aspect or the method in each implementation manner thereof.

Specifically, the device includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes any one of the above-mentioned first aspect to the second aspect or any of its implementation modes method.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that enables a computer to execute any one of the first aspect to the second aspect or the method in each implementation manner thereof.

In a ninth aspect, a computer program product is provided, which includes computer program instructions that cause a computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.

In a tenth aspect, a computer program is provided, which when running on a computer, causes the computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.

Through the above technical solution, in the two-step random access, the terminal device in the idle state or in the deactivated state can blindly detect the Msg B based on the first RNTI after sending the Msg A.

Description of the drawings

Fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.

Figure 2 is a schematic diagram of a four-step random access provided by an embodiment of the present application.

Fig. 3 is a schematic diagram of a four-step random access to a two-step random access according to an embodiment of the present application.

Fig. 4 is a schematic flowchart of a random access method provided according to an embodiment of the present application.

Fig. 5 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 6 is a schematic block diagram of a network device according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of an apparatus provided according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a communication system according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, not all of the embodiments. Regarding the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (Wideband Code) Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Wireless (New Radio, NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, on unlicensed spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next-generation communication systems or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (MTC), and vehicle to vehicle (V2V) communication, etc. The embodiments of this application can also be applied to these communications system.

Optionally, the communication system in the embodiments of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, can also be applied to a dual connectivity (DC) scenario, and can also be applied to a standalone (SA) deployment. Network scene.

The embodiment of this application does not limit the applied spectrum. For example, the embodiments of this application can be applied to licensed spectrum or unlicensed spectrum.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.

Figure 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.

Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

The embodiments of this application describe various embodiments in conjunction with terminal equipment and network equipment. Among them, terminal equipment may also be called User Equipment (UE), access terminal, subscriber unit, user station, mobile station, mobile station, and remote Station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc. The terminal equipment can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, and a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, and next-generation communication systems, such as terminal devices in the NR network or Terminal equipment in the future evolved Public Land Mobile Network (PLMN) network.

As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

A network device can be a device used to communicate with a mobile device. The network device can be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, or a device in WCDMA A base station (NodeB, NB), can also be an Evolutional Node B (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in the NR network Or network equipment in the future evolution of the PLMN network.

In the embodiment of the present application, the network equipment provides services for the cell, and the terminal equipment communicates with the network equipment through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell may be a network equipment (for example, The cell corresponding to the base station. The cell can belong to a macro base station or a base station corresponding to a small cell. The small cell here can include: Metro cell, Micro cell, Pico Cells, Femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.

After the cell search process, the terminal device has achieved downlink synchronization with the cell, so the terminal device can receive downlink data. However, the terminal equipment can only perform uplink transmission if it has achieved uplink synchronization with the cell. The terminal equipment can establish a connection with the cell and obtain uplink synchronization through a random access procedure (Random Access Procedure). In order to facilitate the understanding of the solution of the embodiment of the present application, the random access process will be briefly introduced below in conjunction with FIG. 2.

The random access process can usually be triggered by the following events:

(1) Initial Access (Initial Access).

The terminal device can enter the RRC connected state (RRC_CONNECTED) from the radio resource control (Radio Resource Control, RRC) idle state (RRC_IDLE state).

(2) RRC Connection Re-establishment procedure (RRC Connection Re-establishment procedure).

(3) Handover.

At this time, the terminal device is in the connected state and needs to establish uplink synchronization with the new cell.

(4) In the RRC connection state, when downlink data or uplink data arrives, the uplink is in a "non-synchronised" state (DL or UL data arrival during RRC_CONNECTED when UL synchronisation status is "non-synchronised").

(5) In the RRC connected state, when uplink data arrives, there is no available physical uplink control channel (PUCCH) resource for scheduling request (Scheduling Request, SR) transmission (UL data arrival during RRC_CONNECTED when there are no) PUCCH resources for SR available).

(6) SR failure (SR failure).

(7) RRC request during synchronous configuration (Request by RRC upon synchronous reconfiguration).

(8) The terminal device transitions from the RRC inactive state (Transition from RRC_INACTIVE).

(9) Establish time alignment (To establish time alignment at SCell addition) when SCell is added.

(10) The terminal device requests other system information (Other System Information, OSI).

(11) The terminal device needs to perform beam failure recovery (Beam failure recovery).

In the NR system, two random access methods can be supported: contention-based random access methods and non-competition-based random access methods. The following briefly describes the four-step random access process based on contention. As shown in Figure 2, the four-step random access process includes:

Step 1. The terminal device sends a random access preamble (Preamble, that is, message1, Msg1) to the network device.

Among them, the random access preamble may also be referred to as a preamble, a random access preamble sequence, a preamble sequence, and so on.

Specifically, the terminal device may select physical random access channel (Physical Random Access Channel, PRACH) resources, and the PRACH resources may include time domain resources, frequency domain resources, and code domain resources. Next, the terminal device can send the selected Preamble on the selected PRACH resource. The network device can estimate the transmission delay between it and the terminal device according to the Preamble and use this to calibrate the uplink timing, and can roughly determine the size of the resource required for the terminal device to transmit the message 3 (Msg 3).

Step 2: The network device sends a random access response (Random Access Response, RAR, that is, message2, Msg2) to the terminal device

After the terminal device sends the Preamble to the network device, it can open a RAR window, in which RAR window detects the corresponding physical downlink control channel (Physical Downlink) according to the Random Access Radio Network Temporary Identifier (RA-RNTI) Control Channel, PDCCH). If the terminal device detects the PDCCH scrambled by the RA-RNTI, it can obtain the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) scheduled by the PDCCH. Wherein, the PDSCH includes the RAR corresponding to the Preamble.

If the RAR returned by the network device is not received within this RAR window, the terminal device can consider that this random access procedure has failed. It should be understood that both the terminal equipment and the network equipment need to uniquely determine the value of RA-RNTI, otherwise the terminal equipment cannot decode the RAR.

Optionally, in this embodiment of the present application, the RA-RNTI may calculate the value of the RA-RNTI by using the time-frequency position of the Preamble that is clear to both the transmitting and receiving parties. For example, the RA-RNTI associated with Preamble can be calculated by formula 1:

RA-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id Formula 1

Among them, s_id is the index of the first Orthogonal Frequency Division Multiplexing (OFDM) symbol of the PRACH resource (0≤s_id<14), and t_id is the index of the first time slot of the PRACH resource in a system frame. Index (0≤t_id<80), f_id is the index of PRACH resource in the frequency domain (0≤f_id<8), ul_c_id is the uplink carrier used to transmit the preamble (0 indicates the normal uplink (Normal Uplink, NUL) carrier, 1 represents Supplementary Uplink (SUL) carrier). For Frequency Division Duplexing (FDD), each subframe has only one PRACH resource, so f_id is fixed to 0.

In other words, since the time-frequency position of the Preamble sent by the terminal device is determined, the network device also obtains the time-frequency position of the Preamble when decoding the Preamble, and can then know the RA-RNTI that needs to be used in the RAR. When the terminal device successfully receives a RAR (using a certain RA-RNTI to decode), and the random access sequence identifier (Random Access Preamble Identifier, RAPID) in the RAR is the same as the preamble index sent by the terminal device, it can It is considered that the RAR is successfully received, and the terminal device can stop detecting the PDCCH scrambled by the RA-RNTI at this time.

Step 3. The terminal device sends Msg 3.

After receiving the RAR message, the terminal device determines whether the RAR is its own RAR message. For example, the terminal device can use the preamble index to check, and after determining that it is its own RAR message, it can generate Msg 3 in the RRC layer, and Send Msg 3 to the network device, which needs to carry the identification information of the terminal device, etc.

Among them, Msg 3 is mainly used to notify the network equipment of the random access trigger event. For different random access trigger events, the Msg 3 sent by the terminal device in step 3 may include different content.

For example, for the initial access scenario, Msg 3 may include the RRC connection request message (RRC Setup Request) generated by the RRC layer. In addition, Msg3 may also carry, for example, the 5G-service temporary mobile subscriber identity (Serving-Temporary Mobile Subscriber Identity, S-TMSI) of the terminal device or a random number.

For another example, for an RRC connection re-establishment scenario, Msg 3 may include an RRC connection re-establishment request message (RRC Reestabilshment Request) generated by the RRC layer. In addition, Msg 3 may also carry, for example, a Cell Radio Network Temporary Identifier (C-RNTI) and so on.

For another example, for a handover scenario, Msg 3 may include an RRC handover confirmation message (RRC Handover Confirm) generated by the RRC layer, which carries the C-RNTI of the terminal device. In addition, Msg 3 may also carry information such as Buffer Status Report (BSR). For other trigger events such as uplink/downlink data arrival scenarios, Msg 3 may at least include the C-RNTI of the terminal device.

Step 4. The network device sends a contention resolution message (Msg4) to the terminal device.

The network device sends Msg 4 to the terminal device, and the terminal device correctly receives the Msg 4 to complete the contention resolution (Contention Resolution). For example, during the RRC connection establishment process, Msg 4 may carry the RRC connection establishment message.

Since the terminal device in step 3 can carry its own unique identifier in Msg 3, the network device will carry the unique identifier of the terminal device in Msg4 in the contention resolution mechanism to specify the terminal device that wins the competition. Other terminal devices that did not win in the contention resolution will re-initiate random access.

It should be understood that, in the embodiment of the present application, there are two ways to resolve the contention conflict:

Manner 1: If the terminal device carries the C-RNTI in Msg 3, Msg4 can be scheduled with the PDCCH scrambled by the C-RNTI.

Manner 2: If the terminal device does not carry the C-RNTI in the Msg 3, such as initial access, the Msg 4 can be scheduled with the PDCCH scrambled by the TC-RNTI. At this time, the resolution of the contention conflict can be by receiving the PDSCH of Msg 4 by the terminal device to obtain the conflict resolution ID, and matching the conflict resolution ID with the common control channel (CCCH) service data unit (Service Data Unit) in the Msg 3. Data Unit, SDU) to determine whether to resolve the conflict.

The delay of four-step random access is relatively large, which is not suitable for the low-latency and high-reliability scenarios in 5G. Considering the characteristics of low-latency and high-reliability related services, a two-step random access process scheme is proposed. As shown in Figure 3, in the two-step random access process, in simple terms, it is equivalent to combining the first and third steps of the four-step random access process into the first step in the two-step random access process. The second and fourth steps of the four-step random access process are combined into the second step of the two-step random access process.

More specifically, the two-step random access procedure may include:

The first step: the terminal device sends the first message to the network device.

The first message may be composed of a preamble and a payload (payload). The preamble is a four-step random access preamble, which is transmitted on the PRACH resource, and the payload mainly carries information in Msg 3 in the four-step random access. For example, it may include CCCH SDU, such as corresponding to random access in RRC idle state, and may also include C-RNTI MAC control element (CE), such as mainly corresponding to random access in RRC connected state. The payload may be carried on an uplink channel, and the channel may be, for example, a physical uplink shared channel (PUSCH).

It should be understood that the first message may carry part or all of the information carried in the Preamble and Msg 3 in the four-step random access process.

Step 2: The network device sends a second message to the terminal device.

If the network device successfully receives the first message sent by the terminal device, it can send the second message to the terminal device. The second message may include part or all of the information carried in Msg 2 and Msg 4 in the four-step random access process. The names of the first message and the second message are not limited, that is, they can also be expressed as other names. For example, the first message may also be referred to as Msg A, random access request message or new Msg 1, and the second message may also be referred to as Msg B, random access response information or new Msg 2.

It should be understood that FIG. 3 is only a specific implementation of the two-step random access process, and should not limit the protection scope of the present application.

However, in the two-step random access process, the terminal equipment in the idle state or in the deactivated state has no C-RNTI information during the two-step random access process, so how to blindly check Msg B after sending Msg A is a problem . In the four-step random access, the terminal device decodes the RA-RNTI scrambled PDCCH, that is, in the four-step random access, the network device uses the RA-RNTI to schedule Msg4. If the network equipment still uses RA-RNTI to schedule Msg B, for a four-step random access terminal device, when the terminal device detects the PDCCH scrambled by RA-RNTI, only the PDSCH scheduled by the PDCCH (i.e. payload) is decoded Only then can it be distinguished whether it is the RAR sent to itself, thereby increasing the overhead caused by the four-step random access terminal device decoding the PDCCH.

The following describes in detail the two-step random access scheme designed by this application in response to the above technical problems.

FIG. 4 is a schematic flowchart of a random access method 200 according to an embodiment of the present application. As shown in FIG. 4, the method 200 may include the following content:

S210: The terminal device sends the first information in the two-step random access process to the network device;

S220: The network device receives the first information.

S230: The network device sends a PDCCH scrambled by the first RNTI, where the PDCCH is used to schedule a PDSCH that carries second information in a two-step random access process;

S240. The terminal device monitors the PDCCH scrambled by the first RNTI.

It should be understood that the first information may correspond to the first message (Msg A) in FIG. 3, and the second information may correspond to the second message (Msg B) in FIG. 3.

It should be noted that after the terminal device monitors the PDCCH scrambled by the first RNTI, the terminal device can determine according to the first RNTI that the PDCCH schedules the PDSCH sent to itself, and the PDSCH carries two The second information in the random access process.

Optionally, the terminal device is in a deactivated state or an idle state.

It should be understood that the first RNTI is a newly defined RNTI, which is different from other existing RNTIs, so that conflicts with existing RA-RNTIs can be avoided.

Optionally, the first information includes a random access preamble and/or a first terminal identifier. The random access preamble is transmitted on the PRACH resource, the first terminal identifier may be carried in the payload, and the payload is transmitted by the first PUSCH.

Optionally, in this embodiment of the present application, the first RNTI is an RA-RNTI determined at least according to the resource information of the first PUSCH, where the first information includes a random access preamble, and the resource information of the first PUSCH It is associated with the PRACH resource that transmits the random access preamble.

Specifically, the association relationship between PUSCH resources and PRACH resources may be one-to-one, many-to-one, or one-to-many, which is not limited in the embodiment of the present application.

Optionally, the association relationship between the PUSCH resource and the PRACH resource may be configured by the network device, for example, the network device configures the association relationship through a broadcast message. The association relationship between the PUSCH resource and the PRACH resource may also be pre-configured or agreed upon by agreement.

Optionally, as example 1, the first RNTI is an RA-RNTI determined at least according to the time domain resource of the first PUSCH.

Specifically, in Example 1, the first RNTI is determined according to the following formula 2:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id, formula 2

Among them, s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80; f_id Is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_s_id is the first OFDM in the time domain resource of the first PUSCH The index of the symbol; PUSCH_t_id is the index in the system frame of the first time slot in the time domain resource of the first PUSCH; N1 and N2 are a pre-configured value.

Optionally, as example 2, the first RNTI is an RA-RNTI determined at least according to the frequency domain resource of the first PUSCH.

Specifically, in Example 2, the first RNTI is determined according to the following formula 3:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id, formula 3

Among them, s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80; f_id Is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the index of the frequency domain resource of the first PUSCH in the frequency domain ; PUSCH_t_id is the index in the system frame of the first time slot in the time domain resource of the first PUSCH; N3 is a pre-configured value.

Optionally, as Example 3, the first RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.

Specifically, in Example 3, the first RNTI is determined according to the following formula 4:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id, formula 4

Among them, s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80; f_id Is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the index of the frequency domain resource of the first PUSCH in the frequency domain ; PUSCH_p_id is the index of the resource position of the first PUSCH relative to the resource position of the PRACH resource; N4 is a pre-configured value.

It should be noted that in formulas 2 to 4, ul_c_id is the uplink carrier used to transmit the Preamble (0 means NUL carrier, 1 means SUL carrier. For FDD, there is only one PRACH resource per subframe, so f_id is fixed Is 0.

Optionally, in this embodiment of the present application, the first RNTI is determined according to the first terminal identifier and the RNTI interval, where the first information includes the first terminal identifier.

Specifically, the first RNTI is determined according to the following formula 5:

First RNTI=RNTI_L+first terminal identifier mod (RNTI_H-RNTI_L), formula 5

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.

Optionally, the RNTI interval is configured by the network equipment. When configuring the RNTI interval, the network device will consider whether it will conflict with other RNTIs, for example, whether it will conflict with RNTIs such as RA-RNTI and C-RNTI, so as to avoid conflicts with other RNTIs as much as possible.

Optionally, in this embodiment of the present application, the network device may configure the RNTI interval after receiving the first information. Of course, the RNTI interval may also be pre-configured on the network side.

Optionally, the network device sends a system broadcast message, and the system broadcast message includes the RNTI interval, so that the terminal device obtains the RNTI interval by receiving the system broadcast message.

Specifically, the network device may only broadcast the minimum value RNTI_L and the maximum value RNTI_H in the RNTI interval to the terminal device through a system broadcast message.

Optionally, in this embodiment of the present application, the first RNTI is determined according to a first terminal identifier, where the first information includes the first terminal identifier.

Specifically, the first RNTI is M bits of information in the first terminal identifier, where the first terminal identifier includes N bits of information, M and N are positive integers, and M is less than N.

For example, the first RNTI is the first M bits of information in the first terminal identity, or the first RNTI is the last M bits of information in the first terminal identity, or the first RNTI is the first terminal identity M bits of information in the middle position.

For example, M=16. That is, the first RNTI is the first 16 bits of information in the first terminal identity, or the first RNTI is the last 16 bits of information in the first terminal identity, or the first RNTI is the first terminal identity. The 16-bit information in the middle position.

Optionally, in this embodiment of the present application, the first terminal identifier includes but is not limited to at least one of the following:

A random number or 5G-serving temporary mobile subscriber identity (5G-Serving-Temporary Mobile Subscriber Identity, 5G-S-TMSI) used by the terminal device during initial access in the idle state,

The recovery identifier or the message authentication code (Message Authentication Code Integrity, MAC-I) used by the terminal device in the process of connection recovery in the deactivated state,

Partially reestablished terminal identification used by the terminal device in the process of RRC connection reestablishment.

Optionally, the recovery identifier is a deactivated radio network temporary identifier (Inactive RNTI, I-RNTI) or a short I-RNTI (short I-RNTI).

Optionally, the re-established terminal identifier includes at least one of the following:

The C-RNTI of the terminal device under the source cell, the short MAC-I, and the physical cell identifier (PCI) of the source cell.

Optionally, in the embodiment of the present application, the first RNTI is determined according to the second RNTI and the RNTI interval, the second RNTI is an RA-RNTI determined at least according to the resource information of the first PUSCH, and the first information includes random An access preamble, and the resource information of the first PUSCH is associated with the PRACH resource that transmits the random access preamble.

Specifically, the first RNTI is determined according to the following formula 6:

The first RNTI=RNTI_L+the second RNTI mod (RNTI_H-RNTI_L), formula 6

Among them, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.

Optionally, the second RNTI is an RA-RNTI determined at least according to the time domain resource of the first PUSCH.

Specifically, the second RNTI is determined according to the following formula 7:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id, formula 7

Optionally, the second RNTI is an RA-RNTI determined at least according to the frequency domain resource of the first PUSCH.

Specifically, the second RNTI is determined according to the following formula 8:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id, formula 8

Optionally, the second RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.

Specifically, the second RNTI is determined according to the following formula 9:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id, formula 9

It should be noted that in formulas 7 to 9, ul_c_id is the uplink carrier used to transmit the preamble (0 means NUL carrier, 1 means SUL carrier. For FDD, there is only one PRACH resource per subframe, so f_id is fixed Is 0.

Optionally, in this embodiment of the present application, the first RNTI is determined according to the third RNTI and the RNTI interval, where the third RNTI is RA-RNTI.

Specifically, the first RNTI is determined according to the following formula 10:

The first RNTI=RNTI_L+the third RNTI mod (RNTI_H-RNTI_L), formula 10

Optionally, the third RNTI is determined according to the following formula 11:

The third RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id, formula 11

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission.

It should be noted that in Formula 11, ul_c_id is the uplink carrier used to transmit the Preamble (0 means NUL carrier, 1 means SUL carrier. For FDD, there is only one PRACH resource per subframe, therefore, f_id is fixed to 0.

It should be noted that in the four-step random access, the terminal device decodes the PDCCH scrambled by the RA-RNTI. The third RNTI can be the RA-RNTI in the four-step random access, that is, the third RNTI can also be Calculated by the above formula 1.

Therefore, in the embodiment of the present application, in the two-step random access, the terminal device in the idle state or the deactivated state can blindly detect the MsgB based on the first RNTI after sending the MsgA. Moreover, since the first RNTI is a newly defined RNTI, the conflict with the RA-RNTI can be reduced to a certain extent, and the overhead for the terminal device to detect the PDSCH in the four-step random access process can be reduced.

FIG. 5 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in FIG. 5, the terminal device 300 includes:

The communication unit 310 is configured to send the first information in the two-step random access process;

The communication unit 310 is also used to monitor the PDCCH scrambled by the first RNTI, and the PDCCH is used to schedule the PDSCH that carries the second information in the two-step random access process.

Optionally, the first RNTI is an RA-RNTI determined at least according to the resource information of the first PUSCH, where the first information includes a random access preamble, and the resource information of the first PUSCH is related to the transmission of the random access preamble. The PRACH resource association of the code.

Optionally, the first RNTI is an RA-RNTI determined at least according to the time domain resource of the first PUSCH.

Optionally, the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id,

Optionally, the first RNTI is an RA-RNTI determined at least according to the frequency domain resource of the first PUSCH.

Optionally, the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Optionally, the first RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.

Optionally, the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Optionally, the first RNTI is determined according to the first terminal identifier and the RNTI interval, where the first information includes the first terminal identifier.

Optionally, the first RNTI is determined according to the following formula:

First RNTI=RNTI_L+first terminal identifier mod (RNTI_H-RNTI_L),

Optionally, the first RNTI is determined according to a first terminal identifier, where the first information includes the first terminal identifier.

Optionally, the first RNTI is M bits of information in the first terminal identifier, where the first terminal identifier includes N bits of information, M and N are positive integers, and M is less than N.

Optionally, the first RNTI is the first M bits of information in the first terminal identity, or the first RNTI is the last M bits of information in the first terminal identity, or the first RNTI is the first The terminal identification is in the middle position with M bits of information.

Optionally, M=16.

Optionally, the first terminal identifier includes at least one of the following:

A random number or 5G-S-TMSI used by the terminal device during initial access in the idle state,

The recovery identifier or recovery MAC-I used by the terminal device in the process of connection recovery in the deactivated state,

Optionally, the recovery identifier is I-RNTI or short I-RNTI.

C-RNTI of the terminal device in the source cell, short MAC-I, and PCI of the source cell.

Optionally, the first RNTI is determined according to a second RNTI and an RNTI interval, the second RNTI is an RA-RNTI determined at least according to resource information of the first PUSCH, the first information includes a random access preamble, and the first The resource information of the PUSCH is associated with the PRACH resource that transmits the random access preamble.

Optionally, the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the second RNTI mod (RNTI_H-RNTI_L),

Optionally, the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id,

Optionally, the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Optionally, the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Optionally, the first RNTI is determined according to a third RNTI and an RNTI interval, where the third RNTI is an RA-RNTI.

Optionally, the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the third RNTI mod (RNTI_H-RNTI_L),

Optionally, the third RNTI is determined according to the following formula:

The third RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id,

Among them, s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80; f_id Is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission.

Optionally, the communication unit 310 is further configured to receive a system broadcast message, and the system broadcast message includes the RNTI interval.

Optionally, the terminal device 300 is in an idle state or a deactivated state.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 300 are to implement the method shown in FIG. 4, respectively. For the sake of brevity, the corresponding process of the terminal equipment in 200 will not be repeated here.

Fig. 6 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. As shown in FIG. 6, the network device 400 includes:

The communication unit 410 is configured to receive the first information in the two-step random access process;

The communication unit 410 is also used to send a PDCCH scrambled by the first RNTI, and the PDCCH is used to schedule a PDSCH that carries the second information in the two-step random access process.

Optionally, the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Optionally, the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Optionally, the first RNTI is determined according to the following formula:

First RNTI=RNTI_L+first terminal identifier mod (RNTI_H-RNTI_L),

Optionally, M=16.

A random number or 5G-S-TMSI used by the peer device during the initial access in the idle state,

The recovery identifier or recovery MAC-I used by the peer device in the process of connection recovery in the deactivated state,

Partially reestablished terminal identification used by the peer device in the process of RRC connection reestablishment.

Optionally, the recovery identifier is I-RNTI or short I-RNTI.

C-RNTI of the peer device in the source cell, short MAC-I, PCI of the source cell.

Optionally, the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the second RNTI mod (RNTI_H-RNTI_L),

Optionally, the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Optionally, the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Optionally, the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the third RNTI mod (RNTI_H-RNTI_L),

Optionally, the third RNTI is determined according to the following formula:

The third RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id,

Optionally, the communication unit 410 is further configured to send a system broadcast message, and the system broadcast message includes the RNTI interval.

Optionally, the peer device is in an idle state or in a deactivated state.

It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the network device 400 are to implement the method shown in FIG. 4, respectively. For the sake of brevity, the corresponding process of the network equipment in 200 will not be repeated here.

FIG. 7 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application. The communication device 500 shown in FIG. 7 includes a processor 510, and the processor 510 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 7, the communication device 500 may further include a memory 520. The processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.

The memory 520 may be a separate device independent of the processor 510, or may be integrated in the processor 510.

Optionally, as shown in FIG. 7, the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.

Among them, the transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 500 may specifically be a network device in an embodiment of the present application, and the communication device 500 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, details are not repeated here. .

Optionally, the communication device 500 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 500 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For simplicity , I won’t repeat it here.

Fig. 8 is a schematic structural diagram of a device according to an embodiment of the present application. The apparatus 600 shown in FIG. 8 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 8, the apparatus 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

Optionally, the device 600 may further include an input interface 630. The processor 610 can control the input interface 630 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.

Optionally, the device 600 may further include an output interface 640. The processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application. For brevity, details are not described herein again.

Optionally, the device can be applied to the mobile terminal/terminal device in the embodiment of this application, and the device can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of this application. For brevity, here is No longer.

Optionally, the device mentioned in the embodiment of the present application may also be a chip. For example, it can be a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip.

FIG. 9 is a schematic block diagram of a communication system 700 according to an embodiment of the present application. As shown in FIG. 9, the communication system 700 includes a terminal device 710 and a network device 720.

Wherein, the terminal device 710 can be used to implement the corresponding function implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .

It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed 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, registers. 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 embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. 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), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, 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 Rambus RAM (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present application may also be 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 (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not 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 may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment 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 embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application , For the sake of brevity, I will not repeat it here.

The embodiments of the present application also provide 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, it is not here. Repeat it again.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For brevity, I won't repeat them 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 runs on the computer, the computer is caused 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 , I won’t repeat it 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 runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination 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 constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of 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 system, device, and method 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, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. In response to this understanding, the technical solution of this application 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 method described in each embodiment 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 disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A random access method, characterized in that it comprises:

The terminal device sends the first information in the two-step random access process;

The terminal device monitors the physical downlink control channel PDCCH scrambled by the first wireless network temporary identification RNTI, and the PDCCH is used to schedule the physical downlink shared channel PDSCH that carries the second information in the two-step random access process.
The method according to claim 1, wherein the first RNTI is a random access-radio network temporary identification RA-RNTI determined at least according to resource information of the first physical uplink shared channel PUSCH, wherein the first RNTI One piece of information includes a random access preamble, and the resource information of the first PUSCH is associated with a physical random access channel PRACH resource that transmits the random access preamble.
The method according to claim 2, wherein the first RNTI is an RA-RNTI determined at least according to a time domain resource of the first PUSCH.
The method according to claim 3, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id,

Where s_id is the index of the first orthogonal frequency division multiplexing OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource in a system frame, And 0≤t_id≤80; f_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_s_id is the first The index of the first OFDM symbol in the time domain resource of the PUSCH; PUSCH_t_id is the index in the system frame of the first slot in the time domain resource of the first PUSCH; N1 and N2 are a pre-configured value.
The method according to claim 2, wherein the first RNTI is an RA-RNTI determined at least according to frequency domain resources of the first PUSCH.
The method according to claim 5, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_t_id is the index in the system frame of the first time slot in the time domain resource of the first PUSCH; N3 is a pre-configured value.
The method according to claim 2, wherein the first RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.
The method according to claim 7, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_p_id is the index of the resource position of the first PUSCH relative to the resource position of the PRACH resource; N4 is a pre-configured value.
The method according to claim 1, wherein the first RNTI is determined according to a first terminal identifier and an RNTI interval, wherein the first information includes the first terminal identifier.
The method according to claim 9, wherein the first RNTI is determined according to the following formula:

First RNTI=RNTI_L+first terminal identifier mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The method according to claim 1, wherein the first RNTI is determined according to a first terminal identifier, wherein the first information includes the first terminal identifier.
The method according to claim 11, wherein the first RNTI is M bits of information in the first terminal identifier, wherein the first terminal identifier includes N bits of information, and M and N are positive integers, And M is less than N.
The method according to claim 12, wherein the first RNTI is the first M bits of information in the first terminal identifier, or the first RNTI is the last M bits of the first terminal identifier. Bit information, or, the first RNTI is M-bit information in the middle position in the first terminal identifier.
The method according to claim 12 or 13, wherein M=16.
The method according to any one of claims 9 to 14, wherein the first terminal identifier includes at least one of the following:

A random number or 5G-serving temporary mobile user identifier 5G-S-TMSI used by the terminal device during initial access in the idle state,

The restoration identifier or the message authentication code MAC-I for restoring integrity used by the terminal device in the process of connection restoration in the deactivated state,

The terminal device partially reestablishes the terminal identifier used in the process of radio resource control RRC connection reestablishment.
The method according to claim 15, wherein the recovery identifier is an I-RNTI or a short I-RNTI of a deactivated radio network temporary identifier.
The method according to claim 15 or 16, wherein the reestablishing the terminal identity comprises at least one of the following:

The C-RNTI of the terminal device under the source cell, the short MAC-I, and the physical cell identifier PCI of the source cell.
The method according to claim 1, wherein the first RNTI is determined according to a second RNTI and an RNTI interval, the second RNTI is an RA-RNTI determined at least according to resource information of the first PUSCH, and the second RNTI is One piece of information includes a random access preamble, and the resource information of the first PUSCH is associated with a PRACH resource that transmits the random access preamble.
The method according to claim 18, wherein the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the second RNTI mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The method according to claim 18 or 19, wherein the second RNTI is an RA-RNTI determined at least according to the time domain resource of the first PUSCH.
The method according to claim 20, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_s_id is the time domain resource of the first PUSCH The index of the first OFDM symbol; PUSCH_t_id is the index in the system frame of the first slot in the time domain resource of the first PUSCH; N1 and N2 are a pre-configured value.
The method according to claim 18 or 19, wherein the second RNTI is an RA-RNTI determined at least according to the frequency domain resources of the first PUSCH.
The method according to claim 22, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_t_id is the index in the system frame of the first time slot in the time domain resource of the first PUSCH; N3 is a pre-configured value.
The method according to claim 18 or 19, wherein the second RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.
The method according to claim 24, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_p_id is the index of the resource position of the first PUSCH relative to the resource position of the PRACH resource; N4 is a pre-configured value.
The method according to claim 1, wherein the first RNTI is determined according to a third RNTI and an RNTI interval, wherein the third RNTI is an RA-RNTI.
The method according to claim 26, wherein the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the third RNTI mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The method according to claim 26 or 27, wherein the third RNTI is determined according to the following formula:

The third RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission.
The method according to any one of claims 9, 10, 18 to 28, wherein the method further comprises:

The terminal device receives a system broadcast message, and the system broadcast message includes the RNTI interval.
The method according to any one of claims 1 to 29, wherein the terminal device is in an idle state or a deactivated state.
A random access method, characterized in that it comprises:

The network device receives the first information in the two-step random access process;

The network device sends the physical downlink control channel PDCCH scrambled by the first wireless network temporary identification RNTI, and the PDCCH is used to schedule the physical downlink shared channel PDSCH that carries the second information in the two-step random access process.
The method according to claim 31, wherein the first RNTI is a random access-radio network temporary identification RA-RNTI determined at least according to resource information of the first physical uplink shared channel PUSCH, wherein the first RNTI One piece of information includes a random access preamble, and the resource information of the first PUSCH is associated with a physical random access channel PRACH resource that transmits the random access preamble.
The method according to claim 32, wherein the first RNTI is an RA-RNTI determined at least according to a time domain resource of the first PUSCH.
The method according to claim 33, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id,

Where s_id is the index of the first orthogonal frequency division multiplexing OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource in a system frame, And 0≤t_id≤80; f_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_s_id is the first The index of the first OFDM symbol in the time domain resource of the PUSCH; PUSCH_t_id is the index in the system frame of the first slot in the time domain resource of the first PUSCH; N1 and N2 are a pre-configured value.
The method according to claim 32, wherein the first RNTI is an RA-RNTI determined at least according to the frequency domain resources of the first PUSCH.
The method according to claim 35, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_t_id is the index in the system frame of the first time slot in the time domain resource of the first PUSCH; N3 is a pre-configured value.
The method according to claim 32, wherein the first RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.
The method according to claim 37, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_p_id is the index of the resource position of the first PUSCH relative to the resource position of the PRACH resource; N4 is a pre-configured value.
The method according to claim 31, wherein the first RNTI is determined according to a first terminal identifier and an RNTI interval, wherein the first information includes the first terminal identifier.
The method according to claim 39, wherein the first RNTI is determined according to the following formula:

First RNTI=RNTI_L+first terminal identifier mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The method according to claim 31, wherein the first RNTI is determined according to a first terminal identifier, and wherein the first information includes the first terminal identifier.
The method according to claim 41, wherein the first RNTI is M bits of information in the first terminal identifier, wherein the first terminal identifier includes N bits of information, and M and N are positive integers, And M is less than N.
The method according to claim 42, wherein the first RNTI is the first M bits of information in the first terminal identification, or the first RNTI is the last M bits in the first terminal identification. Bit information, or, the first RNTI is M-bit information in the middle position in the first terminal identifier.
The method according to claim 42 or 43, wherein M=16.
The method according to any one of claims 39 to 44, wherein the first terminal identifier comprises at least one of the following:

A random number or 5G-Service Temporary Mobile User Identity 5G-S-TMSI used by the peer device during the initial access in the idle state,

The recovery identifier or the message authentication code MAC-I to restore integrity used by the opposite device in the process of connection recovery in the deactivated state,

Partially reestablished terminal identification used by the peer device in the process of radio resource control RRC connection reestablishment.
The method according to claim 35, wherein the recovery identifier is an I-RNTI or a short I-RNTI of a deactivated radio network temporary identifier.
The method according to claim 45 or 46, wherein the reestablishing terminal identity comprises at least one of the following:

The C-RNTI of the peer device in the source cell, short MAC-I, and the physical cell identifier PCI of the source cell.
The method according to claim 31, wherein the first RNTI is determined according to a second RNTI and an RNTI interval, the second RNTI is an RA-RNTI determined at least according to resource information of the first PUSCH, and the first One piece of information includes a random access preamble, and the resource information of the first PUSCH is associated with a PRACH resource that transmits the random access preamble.
The method according to claim 48, wherein the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the second RNTI mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The method according to claim 48 or 49, wherein the second RNTI is an RA-RNTI determined at least according to the time domain resource of the first PUSCH.
The method according to claim 50, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_s_id is the time domain resource of the first PUSCH The index of the first OFDM symbol; PUSCH_t_id is the index in the system frame of the first slot in the time domain resource of the first PUSCH; N1 and N2 are a pre-configured value.
The method according to claim 48 or 49, wherein the second RNTI is an RA-RNTI determined at least according to the frequency domain resources of the first PUSCH.
The method according to claim 52, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_t_id is the index in the system frame of the first time slot in the time domain resource of the first PUSCH; N3 is a pre-configured value.
The method according to claim 48 or 49, wherein the second RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.
The method according to claim 54, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_p_id is the index of the resource position of the first PUSCH relative to the resource position of the PRACH resource; N4 is a pre-configured value.
The method according to claim 31, wherein the first RNTI is determined according to a third RNTI and an RNTI interval, wherein the third RNTI is an RA-RNTI.
The method according to claim 56, wherein the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the third RNTI mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The method according to claim 56 or 57, wherein the third RNTI is determined according to the following formula:

The third RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission.
The method according to any one of claims 39, 40, 48 to 58, wherein the method further comprises:

The network device sends a system broadcast message, and the system broadcast message includes the RNTI interval.
The method according to any one of claims 31 to 59, wherein the opposite end device is in an idle state or a deactivated state.
A terminal device, characterized in that it comprises:

The communication unit is used to send the first information in the two-step random access process;

The communication unit is also used to monitor the physical downlink control channel PDCCH scrambled by the first wireless network temporary identification RNTI, and the PDCCH is used to schedule the physical downlink shared channel PDSCH carrying the second information in the two-step random access process .
The terminal device according to claim 61, wherein the first RNTI is a random access-radio network temporary identifier RA-RNTI determined at least according to resource information of the first physical uplink shared channel PUSCH, wherein the The first information includes a random access preamble, and the resource information of the first PUSCH is associated with a physical random access channel PRACH resource that transmits the random access preamble.
The terminal device according to claim 62, wherein the first RNTI is an RA-RNTI determined at least according to a time domain resource of the first PUSCH.
The terminal device according to claim 63, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id,

Where s_id is the index of the first orthogonal frequency division multiplexing OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource in a system frame, And 0≤t_id≤80; f_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_s_id is the first The index of the first OFDM symbol in the time domain resource of the PUSCH; PUSCH_t_id is the index in the system frame of the first slot in the time domain resource of the first PUSCH; N1 and N2 are a pre-configured value.
The terminal device according to claim 62, wherein the first RNTI is an RA-RNTI determined at least according to frequency domain resources of the first PUSCH.
The terminal device according to claim 65, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_t_id is the index in the system frame of the first time slot in the time domain resource of the first PUSCH; N3 is a pre-configured value.
The terminal device according to claim 62, wherein the first RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.
The terminal device according to claim 67, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_p_id is the index of the resource position of the first PUSCH relative to the resource position of the PRACH resource; N4 is a pre-configured value.
The terminal device according to claim 61, wherein the first RNTI is determined according to a first terminal identifier and an RNTI interval, wherein the first information includes the first terminal identifier.
The terminal device according to claim 69, wherein the first RNTI is determined according to the following formula:

First RNTI=RNTI_L+first terminal identifier mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The terminal device according to claim 61, wherein the first RNTI is determined according to a first terminal identifier, and wherein the first information includes the first terminal identifier.
The terminal device according to claim 71, wherein the first RNTI is M-bit information in the first terminal identifier, wherein the first terminal identifier includes N-bit information, and M and N are positive integers , And M is less than N.
The terminal device according to claim 72, wherein the first RNTI is the first M bits of information in the first terminal identifier, or the first RNTI is the last M bits of the first terminal identifier. M-bit information, or the first RNTI is M-bit information in the middle position in the first terminal identifier.
The terminal device according to claim 72 or 73, wherein M=16.
The terminal device according to any one of claims 69 to 74, wherein the first terminal identifier comprises at least one of the following:

A random number or 5G-serving temporary mobile user identifier 5G-S-TMSI used by the terminal device during initial access in the idle state,

The restoration identifier or the message authentication code MAC-I for restoring integrity used by the terminal device in the process of connection restoration in the deactivated state,

The terminal device partially reestablishes the terminal identifier used in the process of radio resource control RRC connection reestablishment.
The terminal device according to claim 75, wherein the recovery identifier is an I-RNTI or a short I-RNTI of a deactivated radio network temporary identifier.
The terminal device according to claim 75 or 76, wherein the reconstructed terminal identifier comprises at least one of the following:

The C-RNTI of the terminal device under the source cell, the short MAC-I, and the physical cell identifier PCI of the source cell.
The terminal device according to claim 61, wherein the first RNTI is determined according to a second RNTI and an RNTI interval, the second RNTI is an RA-RNTI determined at least according to resource information of the first PUSCH, and the The first information includes a random access preamble, and the resource information of the first PUSCH is associated with a PRACH resource for transmitting the random access preamble.
The terminal device according to claim 78, wherein the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the second RNTI mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The terminal device according to claim 78 or 79, wherein the second RNTI is an RA-RNTI determined at least according to the time domain resource of the first PUSCH.
The terminal device according to claim 80, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_s_id is the time domain resource of the first PUSCH The index of the first OFDM symbol; PUSCH_t_id is the index in the system frame of the first slot in the time domain resource of the first PUSCH; N1 and N2 are a pre-configured value.
The terminal device according to claim 78 or 79, wherein the second RNTI is an RA-RNTI determined at least according to frequency domain resources of the first PUSCH.
The terminal device according to claim 82, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_t_id is the index in the system frame of the first time slot in the time domain resource of the first PUSCH; N3 is a pre-configured value.
The terminal device according to claim 78 or 79, wherein the second RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.
The terminal device of claim 84, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_p_id is the index of the resource position of the first PUSCH relative to the resource position of the PRACH resource; N4 is a pre-configured value.
The terminal device according to claim 61, wherein the first RNTI is determined according to a third RNTI and an RNTI interval, wherein the third RNTI is an RA-RNTI.
The terminal device according to claim 86, wherein the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the third RNTI mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The terminal device according to claim 86 or 87, wherein the third RNTI is determined according to the following formula:

The third RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission.
The terminal device according to any one of claims 69, 70, 78 to 88, wherein the communication unit is further configured to receive a system broadcast message, and the system broadcast message includes the RNTI interval.
The terminal device according to any one of claims 61 to 89, wherein the terminal device is in an idle state or a deactivated state.
A network device, characterized by comprising:

The communication unit is configured to receive the first information in the two-step random access process;

The communication unit is also used to send the physical downlink control channel PDCCH scrambled by the first wireless network temporary identification RNTI, and the PDCCH is used to schedule the physical downlink shared channel PDSCH carrying the second information in the two-step random access process .
The network device according to claim 91, wherein the first RNTI is a random access-radio network temporary identifier RA-RNTI determined at least according to resource information of the first physical uplink shared channel PUSCH, wherein the The first information includes a random access preamble, and the resource information of the first PUSCH is associated with a physical random access channel PRACH resource that transmits the random access preamble.
The network device according to claim 92, wherein the first RNTI is an RA-RNTI determined at least according to a time domain resource of the first PUSCH.
The network device according to claim 93, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id,

Where s_id is the index of the first orthogonal frequency division multiplexing OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource in a system frame, And 0≤t_id≤80; f_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_s_id is the first The index of the first OFDM symbol in the time domain resource of the PUSCH; PUSCH_t_id is the index in the system frame of the first slot in the time domain resource of the first PUSCH; N1 and N2 are a pre-configured value.
The network device according to claim 92, wherein the first RNTI is an RA-RNTI determined at least according to frequency domain resources of the first PUSCH.
The network device according to claim 95, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_t_id is the index in the system frame of the first time slot in the time domain resource of the first PUSCH; N3 is a pre-configured value.
The network device according to claim 92, wherein the first RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.
The network device according to claim 97, wherein the first RNTI is determined according to the following formula:

The first RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Where s_id is the index of the first orthogonal frequency division multiplexing OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource in a system frame, And 0≤t_id≤80; f_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the first The index of the frequency domain resource of the PUSCH in the frequency domain; PUSCH_p_id is the index of the resource position of the first PUSCH relative to the resource position of the PRACH resource; N4 is a pre-configured value.
The network device according to claim 91, wherein the first RNTI is determined according to a first terminal identifier and an RNTI interval, and wherein the first information includes the first terminal identifier.
The network device according to claim 99, wherein the first RNTI is determined according to the following formula:

First RNTI=RNTI_L+first terminal identifier mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The network device according to claim 91, wherein the first RNTI is determined according to a first terminal identifier, and wherein the first information includes the first terminal identifier.
The network device according to claim 101, wherein the first RNTI is M bits of information in the first terminal identifier, wherein the first terminal identifier includes N bits of information, and M and N are positive integers , And M is less than N.
The network device according to claim 102, wherein the first RNTI is the first M bits of information in the first terminal identifier, or the first RNTI is the last M bits of the first terminal identifier. M-bit information, or the first RNTI is M-bit information in the middle position in the first terminal identifier.
The network device according to claim 102 or 103, wherein M=16.
The network device according to any one of claims 99 to 104, wherein the first terminal identifier comprises at least one of the following:

A random number or 5G-Service Temporary Mobile User Identity 5G-S-TMSI used by the peer device during the initial access in the idle state,

The recovery identifier or the message authentication code MAC-I to restore integrity used by the opposite device in the process of connection recovery in the deactivated state,

Partially reestablished terminal identification used by the peer device in the process of radio resource control RRC connection reestablishment.
The network device according to claim 105, wherein the recovery identifier is a temporary wireless network identifier I-RNTI or a short I-RNTI in a deactivated state.
The network device according to claim 105 or 106, wherein the re-established terminal identifier comprises at least one of the following:

The C-RNTI of the peer device in the source cell, short MAC-I, and the physical cell identifier PCI of the source cell.
The network device according to claim 91, wherein the first RNTI is determined according to a second RNTI and an RNTI interval, the second RNTI is an RA-RNTI determined at least according to resource information of the first PUSCH, and the The first information includes a random access preamble, and the resource information of the first PUSCH is associated with a PRACH resource for transmitting the random access preamble.
The network device according to claim 108, wherein the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the second RNTI mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The network device according to claim 108 or 109, wherein the second RNTI is an RA-RNTI determined at least according to a time domain resource of the first PUSCH.
The network device according to claim 110, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N1×PUSCH_s_id+N2×PUSCH_t_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_s_id is the time domain resource of the first PUSCH The index of the first OFDM symbol; PUSCH_t_id is the index in the system frame of the first slot in the time domain resource of the first PUSCH; N1 and N2 are a pre-configured value.
The network device according to claim 108 or 109, wherein the second RNTI is an RA-RNTI determined at least according to the frequency domain resources of the first PUSCH.
The network device according to claim 112, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N3×PUSCH_f_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_t_id is the index in the system frame of the first time slot in the time domain resource of the first PUSCH; N3 is a pre-configured value.
The network device according to claim 108 or 109, wherein the second RNTI is an RA-RNTI determined at least according to the resource location of the first PUSCH.
The network device according to claim 114, wherein the second RNTI is determined according to the following formula:

The second RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id+N4×PUSCH_p_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission; PUSCH_f_id is the frequency domain resource of the first PUSCH Index in the frequency domain; PUSCH_p_id is the index of the resource position of the first PUSCH relative to the resource position of the PRACH resource; N4 is a pre-configured value.
The network device according to claim 91, wherein the first RNTI is determined according to a third RNTI and an RNTI interval, wherein the third RNTI is an RA-RNTI.
The network device according to claim 116, wherein the first RNTI is determined according to the following formula:

The first RNTI=RNTI_L+the third RNTI mod (RNTI_H-RNTI_L),

Wherein, RNTI_L is the minimum value in the RNTI interval, RNTI_H is the maximum value in the RNTI interval, and mod is a modulo operation.
The network device according to claim 116 or 117, wherein the third RNTI is determined according to the following formula:

The third RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_c_id,

Where s_id is the index of the first OFDM symbol in the PRACH resource, and 0≤s_id≤14; t_id is the index of the first time slot in the PRACH resource on a system frame, and 0≤t_id≤80 ; F_id is the index of the PRACH resource in the frequency domain, and 0≤f_id≤8; ul_c_id is the uplink UL carrier used for the random access preamble transmission.
The network device according to any one of claims 99, 100, 108 to 118, wherein the communication unit is further configured to send a system broadcast message, and the system broadcast message includes the RNTI interval.
The network device according to any one of claims 91 to 119, wherein the opposite end device is in an idle state or a deactivated state.
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 any one of claims 1 to 30 The method described in one item.
A network device, characterized by 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 any of claims 31 to 60 The method described in one item.
An apparatus, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the apparatus executes the method according to any one of claims 1 to 30.
An apparatus, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the apparatus executes the method according to any one of claims 31 to 60.
A computer-readable storage medium, characterized in that it is used to store a computer program that enables a computer to execute the method according to any one of claims 1 to 30.
A computer-readable storage medium, characterized in that it is used to store a computer program that enables a computer to execute the method according to any one of claims 31 to 60.
A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 1 to 30.
A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 31 to 60.
A computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 30.
A computer program, wherein the computer program causes a computer to execute the method according to any one of claims 31 to 60.