WO2020200117A1

WO2020200117A1 - Random access method, indication method, network device and terminal

Info

Publication number: WO2020200117A1
Application number: PCT/CN2020/081825
Authority: WO
Inventors: 倪吉庆; 周伟; 黄学艳; 童辉; 左君
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团有限公司
Priority date: 2019-03-29
Filing date: 2020-03-27
Publication date: 2020-10-08
Also published as: CN111757535A

Abstract

The present disclosure provides a random access method, an indication method, a network device and a terminal. The random access method comprises: performing a detection operation to detect a random access pilot frequency and an uplink shared channel; and sending a random access response message, the content of the random access response message being related to the detection result of the detection operation.

Description

Random access method, instruction method, network equipment and terminal

Cross references to related applications

This application claims the priority of Chinese Patent Application No. 201910249230.4 filed in China on March 29, 2019, the entire content of which is incorporated herein by reference.

Technical field

The present disclosure relates to the field of communication technology, and in particular to a random access method, an indication method, network equipment and a terminal.

Background technique

In the New Radio (NR) R15 standard in related technologies, the procedure for a terminal to initiate contention-based random access (CBRA) is roughly as follows:

The terminal sends an uplink signal containing a preamble sequence (i.e., Preamble) on the resources of the Physical Random Access Channel (PRACH), which is called MSG 1; the terminal receives the Random Access Response (Random Access Response, sent by the base station). RAR) is called MSG2; the terminal sends uplink data on the uplink time-frequency resources indicated by RAR, called MSG3; the terminal receives downlink data sent by the base station side, and the downlink data contains contention resolution related information, called MSG4. The above process is called a 4-step random access channel (Random Access Channel, RACH) process.

In order to reduce the random access delay, the NR R16 standard discusses the introduction of a 2-step RACH process. The 2-step RACH combines MSG 1 and MSG 3 in the original 4-step RACH in one step, called MSG A; MSG 2 and MSG 4 is sent in one step and is called MSG B.

In 2-step RACH transmission, the terminal sends MSG A, there are the following situations:

Case 1: Preamble and physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) are not successfully transmitted;

Case 2: Both Preamble and PUSCH are successfully transmitted;

Case 3: Preamble transmission is successful, but PUSCH transmission is unsuccessful;

When the Preamble transmission is successful but the PUSCH transmission is unsuccessful, the base station will not send MSG B to the terminal. In this case, the terminal will re-initiate the random access procedure, thereby increasing the random access delay.

In addition, in the original 4-step RACH, the location of the target control resource in the 2-step RACH cannot be well determined, so that it cannot be guaranteed that the terminal can successfully receive the random access response message.

Summary of the invention

The embodiments of the present disclosure provide a random access method, an indication method, network equipment and a terminal to solve the problem that when the Preamble transmission is successful but the PUSCH transmission is unsuccessful, the terminal will re-initiate the random access procedure to the base station to increase the random access The problem of access delay. Further, the timing of receiving the random access response message is determined, which increases the reliability of successful reception by the terminal.

To solve the above technical problems, the present disclosure is implemented as follows:

In the first aspect, the embodiments of the present disclosure provide a random access method for network equipment, and the random access method includes:

Perform detection operations to detect random access pilots and uplink shared channels;

A random access response message is sent, and the content of the random access response message is related to the detection result of the detection operation.

In the second aspect, embodiments of the present disclosure provide a random access method for a terminal, including:

Sending a message, the message including random access pilot and uplink data;

Detect random access response message;

When a random access response message is detected, the user behavior is determined according to the content of the random access response message.

In a third aspect, embodiments of the present disclosure provide an indication method for network equipment, and the indication method includes:

The type of the random access response message is indicated in an explicit or implicit manner.

In a fourth aspect, embodiments of the present disclosure provide an indication method for use in a terminal, and the indication method includes:

The type of the random access response message is determined, and the type of the random access response message is indicated by the network device in an explicit or implicit manner.

In a fifth aspect, the embodiments of the present disclosure provide a random access method for a terminal, including:

Sending a message, the message including: random access pilot and uplink data; the uplink data is sent at the PUSCH potential transmission opportunity;

The terminal detects the random access response message in a time window, and the starting position of the time window is: the first symbol of the target control resource set;

The target control resource set is the first control resource set that can be monitored after the PUSCH potential transmission opportunity; the first symbol of the target control resource set and the last symbol of the PUSCH occurrence are separated by X symbols, and the X Is a positive integer.

The DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the type of the random access response message; or

The MAC CE in the MAC PDU carrying the random access response message carries indication information, and the indication information is used to indicate the type of the random access response message; or

The type of the random access response message is indicated by the scrambling sequence used to schedule the DCI of the random access response message.

In a sixth aspect, embodiments of the present disclosure provide a network device, including a processor and a transceiver,

The processor is configured to perform detection operations, and detect random access pilots and uplink shared channels;

The transceiver is configured to send a random access response message, and the content of the random access response message is related to the detection result of the detection operation.

In a seventh aspect, an embodiment of the present disclosure provides a terminal including a processor and a transceiver;

The transceiver is used to send messages, and the messages include random access pilots and uplink data;

The processor is configured to detect a random access response message; in the case of detecting a random access response message, determine a user behavior according to the content of the random access response message.

In an eighth aspect, embodiments of the present disclosure provide a network device, and the network device includes:

The indication module is used to indicate the type of random access response message in an explicit or implicit manner.

In a ninth aspect, an embodiment of the present disclosure provides a terminal, and the terminal includes:

The determining module is used to determine the type of the random access response message, the type of the random access response message being indicated by the network device in an explicit or implicit manner.

In a tenth aspect, an embodiment of the present disclosure provides a terminal, the terminal processor and the transceiver:

The transceiver is used to send a message, and the message includes: random access pilot and uplink data; the uplink data is sent at a PUSCH potential sending opportunity;

The processor is used by the terminal to detect a random access response message in a time window, and the starting position of the time window is: the first symbol of the target control resource set;

In an eleventh aspect, an embodiment of the present disclosure provides a network device, including a processor, a memory, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor When implementing the steps in the random access method described in the first aspect.

In a twelfth aspect, an embodiment of the present disclosure provides a terminal, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is executed by the processor, The steps in the random access method as described in the second aspect are implemented.

In a thirteenth aspect, the embodiments of the present disclosure provide a network device, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, the computer program being executed by the processor When realizing the steps in the indication method described in the third aspect.

In a fourteenth aspect, the embodiments of the present disclosure provide a terminal including a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is executed by the processor, The steps in the indicating method as described in the fourth aspect are implemented.

In a fifteenth aspect, embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the random access as described in the first aspect is implemented. Steps into the method.

In a sixteenth aspect, embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the random access as described in the second aspect is implemented. Steps into the method.

In a seventeenth aspect, embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the instruction method as described in the first aspect is implemented Steps in.

In an eighteenth aspect, embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the instruction method as described in the second aspect is implemented Steps in.

In the embodiment of the present disclosure, a detection operation is performed to detect a random access pilot and an uplink shared channel; a random access response message is sent, and the content of the random access response message is related to the detection result of the detection operation. The network device can determine the content of the random access response message according to the detection result of the random access pilot and the uplink shared channel, so as to inform the terminal of the corresponding behavior flow, and effectively reduce the random access delay. Further, by using the specific time slot of the PUSCH occurrence in the 2-step RACH as a reference, the problem that the potential first target control resource set of the random access response message is before the PUSCH occurrence is reasonably avoided.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

Fig. 1 is a flowchart of a random access method provided by an embodiment of the present disclosure;

Figures 2a and 2b are schematic diagrams of MAC payload and MAC sub-header respectively;

FIG. 3 is a flowchart of another random access method provided by an embodiment of the present disclosure;

FIG. 4 is a flowchart of an indication method provided by an embodiment of the present disclosure;

FIG. 5 is a flowchart of another indication method provided by an embodiment of the present disclosure;

FIG. 6 is a flowchart of yet another random access method provided by an embodiment of the present disclosure;

Figure 7 is a structural diagram of a network device provided by an embodiment of the present disclosure;

FIG. 8 is a structural diagram of another network device provided by an embodiment of the present disclosure;

FIG. 9 is a structural diagram of a terminal provided by an embodiment of the present disclosure;

FIG. 10 is a structural diagram of another terminal provided by an embodiment of the present disclosure;

FIG. 11 is a structural diagram of another network device provided by an embodiment of the present disclosure;

FIG. 12 is a diagram of another terminal structure provided by an embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

Referring to Fig. 1, Fig. 1 is a flowchart of a random access method provided by an embodiment of the present disclosure, which is applied to a network device. As shown in Fig. 1, the method includes the following steps:

Step 101: Perform a detection operation to detect random access pilots and uplink shared channels.

The random access pilot can be understood as a preamble sequence (ie Preamble). The network equipment detects the random access pilot and uplink shared channel. The detection results include: none of the random access pilot and uplink shared channel is detected; the random access pilot and the uplink shared channel are detected at the same time; the random access is detected Into the pilot, but did not detect the uplink shared information.

The detection of the uplink shared channel by the network equipment can be understood as detecting the uplink data transmitted on the uplink shared channel, and the uplink data is sent by the terminal.

In the present disclosure, a network device can be understood as a base station, and a terminal can be understood as a user equipment (UE).

Step 102: Send a random access response message, where the content of the random access response message is related to the detection result of the detection operation.

The network device sends a random access response message to the terminal according to the detection result. The detection result is different, and the content of the random access response message is different. In this way, the terminal can be informed of the corresponding behavior flow, so that the terminal can perform corresponding user behaviors according to different random access response messages sent by the network device, and the random access delay of the terminal can be reduced.

In the embodiment of the present disclosure, a detection operation is performed to detect a random access pilot and an uplink shared channel; a random access response message is sent, and the content of the random access response message is related to the detection result of the detection operation. The network device can determine the content of the random access response message according to the detection result of the random access pilot and the uplink shared channel, so as to inform the terminal of the corresponding behavior flow, and effectively reduce the random access delay.

As mentioned earlier, when the terminal sends MSG A, it includes the following situations:

Preamble and physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) are not successfully transmitted;

Both Preamble and PUSCH are successfully transmitted;

Preamble transmission is successful, PUSCH transmission is unsuccessful;

For the 4-step access process, when the terminal sends MSG 1, the preamble transmission may be successful or unsuccessful. Therefore, in the specific embodiment of the present disclosure, the detection result of the detection operation performed by the network device correspondingly includes the following Various situations:

Random access pilot and uplink shared channel are detected;

Only the random access pilot is detected but the uplink shared channel is not detected;

The random access pilot and uplink shared channel are not detected.

In the specific embodiment of the present disclosure, the network device will perform different random access response message sending processing according to the detection result. In one of the specific methods, according to the detection result, determining to send the random access response message is:

In the case where the detection result is that the random access pilot and the uplink shared channel are detected, the MSG B in the 2-step random access procedure is sent;

or

If the detection result is that only the random access pilot is detected but the uplink shared channel is not detected, the MSG 2 in the 4-step random access procedure is sent;

or

If the detection result is that the random access pilot and the uplink shared channel are not detected, the random access response message is not sent.

Specifically, when the detection result is that the random access pilot and the uplink shared channel are detected, the network device considers that the terminal uses MSG A in the 2-step random access process for random access. Accordingly, the network device Send the MSG B in the 2-step random access procedure to the terminal.

When the detection result is that only the random access pilot is detected but the uplink shared channel is not detected, the network equipment considers that the terminal uses MSG 1 in the 4-step random access process for random access. Accordingly, the network The device sends MSG 2 in the 4-step random access process to the terminal.

When the network equipment detects that only the random access pilot is detected but not the uplink shared channel, it is possible that the terminal only sends the random access pilot (random access pilot) according to the 4-step random access process. The incoming pilot is the MSG 1) in the random access process. At this time, the network device sends the MSG 2 in the 4-step random access process to the terminal according to the 4-step random access process. Another possibility is that the terminal sends MSG B according to the 2-step random access process (MSG B includes random access pilot and uplink shared channel), but the uplink shared channel transmission is unsuccessful, causing the network equipment to only detect the random access pilot. At this time, the network device sends MSG 2 in the 4-step random access process to the terminal according to the 4-step random access process, which can inform the terminal to proceed with the next step in the 4-step random access process to prevent the terminal from not receiving In the case of a random access response message, the random access procedure is initiated again to effectively reduce the random access delay.

The above-mentioned 2-step random access process reverts to the 4-step random access process. For the terminal using the 2-step random access process, even if the network device does not successfully demodulate the PUSCH, it can still send a random access response message to the terminal , So that the terminal continues to access processing according to the 4-step random access procedure.

When the detection result is that the random access pilot and the uplink shared channel are not detected, the network device does not send a random access response message. At this time, the terminal does not receive the random access response message and can initiate the random access procedure again.

For example, three UEs perform a 2-step random access process: UE1 sends MSG A1 (i.e. Preamble1 and PUSCH1) to the base station; UE2 sends MSG A2 (i.e. Preamble2 and PUSCH2) to the base station, and UE3 sends MSG A3 (i.e. Preamble3 and PUSCH3) to the base station. ); The Preambles sent by the three UEs to the base station are all different. All three UEs simultaneously support a 4-step random access process and a 2-step random access process.

The base station performs Preamble detection and corresponding PUSCH detection at random access occasions (RACH Occasion, RO). For UE1, the base station did not detect Preamble1 and PUSCH1; for UE2, the base station detected both Preamble2 and PUSCH2; for UE3, the base station detected Preamble3 but not PUSCH3;

According to the method of the embodiment of the present disclosure, the base station will not send data to UE1 (that is, it will not send random access response messages); the base station will send MSG B (used in the 2-step random access process) to UE2; the base station will send MSG to UE3 2 (for the 4-step random access procedure). In this way, even if UE3 sends Preamble3 and PUSCH3 to the base station, and the base station detects Preamble3 but does not detect PUSCH3, the base station can still send MSG 1 to UE3 according to the 4-step random access process (that is, the 2-step random access process falls back to The 4-step random access process) informs the terminal of the corresponding behavior process to prevent UE3 from initiating the random access process again, which can effectively reduce the random access delay.

Further, in step 101, before performing a detection operation to detect random access pilots and uplink shared channels, the method further includes:

Allocating the same random access pilot set to the terminal of the first type and the terminal of the second type;

The terminal of the first type is a terminal that supports a 4-step random access procedure;

The second type of terminal is a terminal that supports a 2-step random access procedure.

In the specific embodiment of the present disclosure, different terminals can share random access pilots, that is, the random access pilot set includes one or more random access pilots, the first type of terminal and the second type of terminal The random access pilots used by each belong to the same random access pilot set. The time-frequency resources sent by each random access pilot in the random access pilot set can be shared.

In this embodiment, the first type of terminal is a terminal that supports a 4-step random access process; the second type of terminal is a terminal that supports a 2-step random access process. In other words, the network device can support a 4-step random access process and a 2-step random access process at the same time.

The terminal of the first type sends Preamble1 to the network device, and the terminal of the second type sends MSG A (MSG A includes Preamble2 and PUSCH) to the network device. After detecting Preamble1, the network device sends MSG 2 in the 4-step random access procedure to the terminal of the first type. After detecting MSG A, the network device sends the MSG 2 in the 2-step random access procedure to the terminal of the second type. MSG B, inform the terminal of the corresponding behavior flow.

For example, the system is configured with both 2-step RACH users (in this disclosure, users can be understood as terminals) and 4-step RACH users, where the time-frequency resources sent by the preamble in 2-step RACH and 4-step RACH can be shared ；

Rel-15 UE adopts 4-RACH, the new function UE can choose 4-step RACH or 2-step RACH according to the configuration.

Three UEs perform the RACH procedure. Specifically, UE1 performs 4-step RACH and sends Preamble1, UE2 performs two-step RACH, and simultaneously sends Preamble2 and PUSCH2, and UE3 performs 2-step RACH and simultaneously sends Preamble3 and PUSCH3; the preambles sent by the three users are all different.

The base station performs Preamble detection and corresponding PUSCH detection. For UE1, the base station detects Preamble1; for UE2, the base station detects both Preamble2 and PUSCH2; for UE3, the base station detects Preamble3 but not PUSCH3.

For UE1, the base station sends the corresponding MSG 2 according to the 4-step RACH process; for UE2, the base station sends the corresponding MSG B according to the 2-step RACH process; for UE3, the base station sends the corresponding MSG according to the 4-step RACH process MSG 2.

Further, in step 101, after performing a detection operation to detect random access pilots and uplink shared channels, the method further includes:

The type of random access response message can be understood as whether the response of the network device is MSG 2 of the 4-step random access process or MSG B of the 2-step random access process.

Among them, the type of the random access response message indicated in an explicit manner is specifically:

Carrying indication information through DCI, where the indication information is used to indicate the type of the random access response message, and the DCI is used to schedule the random access response message;

or

The MAC CE carries indication information, the indication information is used to indicate the type of the random access response message, and the MAC CE belongs to the MAC PDU that carries the random access response message.

Specifically, DCI is Downlink Control Information (DCI), MAC is Media Access Control (MAC), CE is Control Element (CE), and PDU is Protocol Data Unit (Protocol Data Unit, PDU).

Carrying the indication information through the DCI specifically includes: carrying the indication information through the response message type indication field set in the DCI.

The DCI format used to indicate MSG 2 (RAR) in related technologies is shown in Table 1:

Table 1

It can be seen from Table 1 that there are 16-bit reserved bits in the DCI used to indicate MSG 2 (RAR) transmission in related technologies, and one or digits of the reserved bits are used to indicate the scheduled physical downlink shared channel (Physical Downlink). Shared Channel, PDSCH) The message sent is MSG B or MSG 2. A specific design example of a DCI format is shown in Table 2:

Table 2

The embodiment of the present disclosure also provides a way of carrying indication information through MAC CE, specifically: carrying the indication information through the first bit of the MAC payload part of the MAC CE.

The MAC CE in MSG 2 in the related technology, as shown in Figure 2a, the first bit of the MAC payload (that is, MAC payload) in the MAC CE in MSG 2 is the reserved bit R. Therefore, the reserved bits in the related technology can be used to indicate whether the response of the network device is MSG 2 of 4-step RACH (ie 4-step random access process) or MSG of 2-step RACH (ie 2-step random access process) B .

For example, when R=0, it indicates that the transmitted message is a 4-step RACH RAR (MSG 2); when R=1, it indicates that the transmitted message is a 2-step RACH MSG B. Specifically, the MAC subheader (ie, the MAC subheader, as shown in Figure 2b) of the MAC CE in MSG B is the same as the MAC subheader of the 4-step RAR, and the specific MAC payload is different.

The 2-step RACH process is rolled back to the 4-step RACH process, and the MAC CE design has additional functions to ensure the sharing of the preamble resources of the 2-step RACH and 4-step RACH.

The DCI or MAC CE indicates whether the message sent is a 4-step RACH MSG 2 (RAR) or a 2-step RACH MSG B, which enables the terminal to detect the downlink control channel only based on a radio network temporary identification (Radio Network Temporary). Identity, RNTI) for decoding, the design complexity is low, and it is easy to implement.

The embodiment of the present disclosure also provides a way to indicate the type of the random access response message in an implicit way, specifically:

The type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message.

Specifically, there is a correspondence between the scrambling sequence of the DCI used to schedule the random access response message and the type of the random access response message, and the scrambling sequence of the DCI is different, and the type of the random access response message is different. The type of random access response message can be determined according to the scrambling sequence of the DCI. For example, when the scrambling sequence of DCI is the first sequence, the corresponding random access response message type is MSG 2 of the 4-step random access process; when the scrambling sequence of DCI is the second sequence, the corresponding random access The response message type is MSG B of the 2-step random access process. In this way, when the network device uses the first sequence in the DCI scrambling sequence, it indicates that the random access response message type is MSG2 of the 4-step random access process; When the network device adopts the second sequence in the scrambling sequence of the DCI, it indicates that the random access response message type is MSG B of the 2-step random access process.

Referring to FIG. 3, FIG. 3 is another flowchart of a random access method provided by an embodiment of the present disclosure, which is applied to a terminal. As shown in FIG. 3, the method includes the following steps:

Step 301: Send a message, where the message includes random access pilots and uplink data.

The random access pilot can be understood as a preamble sequence (ie Preamble). The terminal sends random access pilots and uplink data to the network equipment. Uplink data is transmitted through the uplink shared channel.

In this disclosure, a network device can be understood as a base station, and a terminal can be understood as a UE.

Step 302: Detect the random access response message.

The random access response message is sent by the network device. The network device detects the random access pilot and uplink data sent by the terminal, determines whether to send a random access response message to the terminal, or determines the content of the random access response message sent to the terminal.

Step 303: When the random access response message is detected, determine the user behavior according to the content of the random access response message.

The terminal determines the behavior of the terminal (that is, the user) according to the content of the random access response message. The content of the random access response message is different, and the behavior of the terminal is different.

In the embodiment of the present disclosure, a message is sent, and the message includes a random access pilot and uplink data; a random access response message is detected; when a random access response message is detected, a random access response message is detected according to the random access response message. Content to determine user behavior. The terminal determines the behavior process corresponding to the terminal according to the content of the received random access response message, which can avoid the terminal from repeatedly initiating the random access process and effectively reduce the random access delay of the terminal.

Further, the content of the random access response message is related to the detection result; the detection result is the result obtained by the network device detecting the random access pilot and the uplink shared channel.

The network device detects the random access pilot and uplink data sent by the terminal, and then determines the random access response message according to the detection result. The content of the random access response message is related to the detection result of the network device. The network device sends a random access response message to the terminal according to the detection result. The detection result is different, and the content of the random access response message is different. In this way, the terminal can be notified of the corresponding behavior flow, avoiding the terminal from repeatedly initiating random access procedures to the network equipment, and reducing the random access delay of the terminal.

According to the detection result, it is determined that the random access response message is specifically sent as:

In the case where the detection result is that the random access pilot and the uplink shared channel are detected, the random access response message is MSG B in the 2-step random access procedure;

or

In the case where the detection result is that only the random access pilot is detected, the random access response message is MSG 2 in the 4-step random access procedure.

For the specific record of the random access response message determined by the network device according to the detection result, refer to the related description of the network device in the embodiment shown in FIG. 1, which is not repeated here.

Among them, the specific type of the random access response message determined in an explicit manner is:

Determining the type of the random access response message according to the indication information carried by the DCI, where the DCI is used to schedule the random access response message;

or

The type of the random access response message is determined by the indication information carried by the MAC CE, and the MAC CE belongs to the MAC PDU that carries the random access response message.

Wherein, determining the type of the random access response message through the indication information carried in the DCI specifically includes: determining the type of the random access response message through the response message type indication field in the DCI.

Determining the type of the random access response message through the indication information carried by the MAC CE specifically includes: determining the type of the random access response message through the indication information carried in the first bit of the MAC payload part of the MAC CE.

The type of random access response message is determined implicitly as follows:

The random access response message type is implicitly determined through the scrambling sequence used to schedule the DCI of the random access response message.

The network device adopts a display method and an implicit method to determine the type of the random access response message. For details, please refer to the related description of the network device part in the embodiment shown in FIG. 1, which is not repeated here.

The terminal sends the Preamble and PUSCH to the network device. When the network device only detects the Preamble, the network device sends the MSG 2 in the 4-step random access procedure to the terminal, and the terminal performs the next step according to the MSG 2. In the above process, the terminal initiates a random access process to the network device according to MSG A in the 2-step random access process. When the network device only detects the preamble, the network device responds according to the 4-step random access process, that is, The terminal sends MSG2 in the 4-step random access process, so that the terminal reverts from the 2-step random access process to the 4-step random access process.

In the specific embodiment of the present disclosure, the UE can perform corresponding processing according to different random access response messages sent by the network device, and the UE can recognize the type of the random access response message, which needs to be based on the display or implicit instruction of the network device. The disclosed embodiment also provides an indication method to indicate the type of the random access response message.

Referring to FIG. 4, FIG. 4 is a flowchart of an indication method provided by an embodiment of the present disclosure, which is applied to a network device. As shown in FIG. 4, the method includes the following steps:

Step 401: Indicate the type of the random access response message in an explicit or implicit manner.

The terminal initiates a random access procedure to the network device. For example, the random access procedure may be MSG 1 in the 4-step random access procedure, or MSG A in the 2-step random access procedure. The type of random access response message sent by the network device to the terminal. The type of the random access response message is used to indicate whether the random access response message is MSG 2 in the 4-step random access process or MSG B in the 2-step random access process.

In this way, for a network device that can simultaneously support a 4-step random access process and a 2-step random access process, the type of the random access response message can be indicated in an explicit or implicit manner, so as to inform the terminal of the corresponding behavior process.

Specifically, when the type of the random access response message is explicitly indicated by the network device, the DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the Type of random access response message;

or

When the type of the random access response message is explicitly indicated by the network device, the MAC CE in the MAC PDU carrying the random access response message carries indication information, and the indication information is used to indicate the random Type of access response message;

or

When the type of the random access response message is implicitly indicated by the network device, the type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message .

Further, when the DCI carries the indication information, the indication information is carried by the response message type indication field set in the DCI;

or

In the case that the MAC CE carries the indication information, the first bit of the MAC payload part of the MAC CE carries the indication information.

Further, the random access response message is MSG B in a 2-step random access procedure; or, the random access response message is MSG 2 in a 4-step random access procedure.

Specifically, when the network device detects the random access pilot and the uplink shared channel, it considers that the terminal uses MSG A in the 2-step random access process for random access, and accordingly, the network device sends the 2-step MSG B in the random access procedure.

When the network device detects only the random access pilot and does not detect the uplink shared channel, it is considered that the terminal uses MSG 1 in the 4-step random access process for random access, and accordingly, the network device sends 4 to the terminal MSG 2 in the random access procedure.

When the detection result of the network device is that only the random access pilot is detected but the uplink shared channel is not detected, it is possible that the terminal only sends the random access pilot (random access pilot) according to the 4-step random access process. The pilot is the MSG 1) in the random access process. At this time, the network device sends the MSG 2 in the 4-step random access process to the terminal according to the 4-step random access process. Another possibility is that the terminal sends MSG B according to the 2-step random access procedure (MSG B includes random access pilot and uplink shared channel), but the network equipment only detects the random access pilot. At this time, the network equipment follows 4-step random access process, sending MSG 2 in the 4-step random access process to the terminal, which can inform the terminal to proceed with the next step according to the 4-step random access process to prevent the terminal from receiving the random access response message , Initiate the random access procedure again to effectively reduce the random access delay.

The above-mentioned 2-step random access process reverts to the 4-step random access process. For the terminal using the 2-step random access process, even if the network device does not successfully demodulate the PUSCH, it can still send a random access response message to the terminal , So that the terminal performs the next step according to the 4-step random access procedure.

Referring to FIG. 5, FIG. 5 is a flowchart of an indication method provided by an embodiment of the present disclosure, which is applied to a terminal. As shown in FIG. 5, the method includes the following steps:

Step 501: Determine the type of the random access response message, where the type of the random access response message is indicated by the network device in an explicit or implicit manner.

The terminal initiates a random access procedure to the network device. For example, the random access procedure may be MSG 1 in the 4-step random access procedure, or MSG A in the 2-step random access procedure. The type of random access response message that the network device sends to the terminal. The type of the random access response message is used to indicate whether the random access response message is MSG 2 in the 4-step random access process or MSG B in the 2-step random access process.

In this way, for a terminal that can support a 4-step random access process and a 2-step random access process at the same time, the network device can indicate the type of the random access response message in an explicit or implicit manner, so as to inform the terminal of the corresponding behavior Process.

or

When the MAC CE carries the indication information, the first bit of the MAC payload part of the MAC CE carries the indication information.

Referring to FIG. 6, FIG. 6 is a flowchart of a random access method provided by an embodiment of the present disclosure, which is applied to a terminal, and the method includes:

Step 601: Send a message, the message includes: random access pilot and uplink data; the uplink data is sent at a PUSCH potential transmission opportunity.

The random access pilot can be understood as a preamble sequence (ie Preamble). The terminal sends random access pilots and uplink data to the network equipment. The uplink data is transmitted through the uplink shared channel and sent at the PUSCH potential transmission opportunity.

Step 602: The terminal detects a random access response message in a time window, where the start position of the time window is: the first symbol of the target control resource set;

For example, the system information broadcasts the transmission parameters of the 2-step random access process, and three UEs perform the 2-step random access process: UE1 sends MSG A1 (ie Preamble1 and PUSCH1) to the base station; UE2 sends MSG A2 (ie Preamble2 and PUSCH2) to the base station ), UE3 sends MSG A3 (that is, Preamble3 and PUSCH3) to the base station; the three UEs send different Preambles to the base station. All three UEs simultaneously support a 4-step random access process and a 2-step random access process;

The base station does not send data to UE1 (that is, it does not send random access response messages); the base station sends MSG B to UE2 (for 2-step random access procedures); the base station sends MSG 2 (for 4-step random access procedures) to UE3 ；

The three UEs monitor the Physical Downlink Control Channel (PDCCH) within the time window of the corresponding random access response message (ie, RAR monitoring window). The start position of the time window of the three UEs is the first symbol of the first control resource set after PUSCH transmission is completed, or the first symbol of the first control resource set after PUSCH transmission is completed X symbols (ie symbols) The first symbol, X is a positive integer.

That is, the starting position of the time window is: the first symbol of the target control resource set; the target control resource set is the first control resource set that can be monitored after the PUSCH potential transmission opportunity; the target There is an interval of X symbols between the first symbol of the control resource set and the last symbol of the PUSCH occurrence, where X is a positive integer.

UE1 does not detect the PDCCH, adjusts the corresponding transmission parameters, and resends MSG A on the subsequent RACH occasion; UE2 detects the PDCCH, and the response indication information in the DCI indicates that the scheduling message is MSG B (ie, random access response message Using the 2-step random access process), UE2 detects MSG B, and the 2-step random access process ends; UE3 detects PDCCH, and the corresponding indication information in the DCI indicates that the scheduled message is MSG 2 (that is, the random access response message uses 4-step random access process), UE3 performs the subsequent 4-step random access process.

For another example, the system is configured with 2-step RACH users and 4-step RACH users at the same time, where the time-frequency resources sent by the preamble in 2-step RACH and 4-step RACH can be shared;

Rel-15UE adopts 4-RACH, the new function UE can choose 4-step RACH or 2-step RACH according to the configuration;

Three UEs perform the RACH procedure. Specifically, UE1 performs 4-step RACH and sends Preamble1, UE2 performs two-step RACH and simultaneously sends Preamble2 and PUSCH2, and UE3 performs 2-step RACH and simultaneously sends Preamble3 and PUSCH3; the preambles sent by the three users are all different;

The base station performs Preamble detection and corresponding PUSCH detection. For UE1, the base station detects Preamble1; for UE2, the base station detects both Preamble2 and PUSCH2; for UE3, the base station detects Preamble3 but not PUSCH3;

For UE1, the base station sends the corresponding MSG 2 according to the 4-step RACH process; for UE2, the base station sends the corresponding MSG B according to the 2-step RACH process; for UE3, the base station sends the corresponding MSG according to the 4-step RACH process MSG 2;

The three UEs monitor the downlink control channel within the time window of the corresponding random access response message. The start position of the user (UE1) time window of the 4-step RACH process is the first symbol of the first control resource set after the preamble transmission is completed; the start of the time window of the 2-step RACH user (UE2 and UE3) The position is the first symbol of the first control resource set after PUSCH transmission is completed, or the first symbol of the first control resource set after PUSCH transmission is completed X symbols (ie symbols), and X is a positive integer;

UE1 detects PDCCH and msg2, and performs the subsequent 4-step RACH process; UE2 detects PDCCH, the MAC-CE in the demodulated response message indicates that the response is msgB, and the 2-step RACH process ends; UE3 detects PDCCH, the MAC-CE in the demodulated response message indicates that the response is msg2 (4-step RACH), and the user performs the subsequent 4-step RACH process.

In this embodiment, a message is sent, and the message includes: random access pilot and uplink data; the uplink data is sent at the PUSCH potential sending opportunity; the terminal detects the random access response message in the time window, and the time window The starting position is: the first symbol of the target control resource set; the target control resource set is the first control resource set that can be monitored after the PUSCH potential transmission opportunity; the first symbol of the target control resource set is the same as There are X symbols between the last symbol of the PUSCH occurrence, and the X is a positive integer. In this way, the terminal can detect the random access response message within the time window to perform the next step processing according to the detected random access response message.

Further, in step 602, after the terminal detects the random access response message in the time window, the random access method further includes:

This step is consistent with the content recorded in step 303. For details, please refer to the record in step 303, which will not be repeated here.

Further, the content of the random access response message is related to the detection result;

The detection result is the result obtained by the network equipment detecting the random access pilot and the uplink shared channel.

Further, in a case where the detection result is that a random access pilot and an uplink shared channel are detected, the random access response message is MSG B in the 2-step random access procedure;

or

Further, the random access response method further includes:

The type of the random access response message is determined in an explicit or implicit manner.

or

In addition, determining the type of the random access response message through the indication information carried in the DCI specifically includes: determining the type of the random access response message through the response message type indication field in the DCI.

Determining the type of the random access response message through the indication information carried by the MAC CE specifically includes: determining the type of the random access response message through the indication information carried in the first bit of the MAC payload part of the MAC-CE.

Further, determining the type of the random access response message in an implicit manner is specifically:

Referring to FIG. 7, FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present disclosure. As shown in FIG. 7, the network device 700 includes:

The detection module 701 is configured to perform detection operations and detect random access pilots and uplink shared channels;

The sending module 702 is configured to send a random access response message, and the content of the random access response message is related to the detection result of the detection operation.

Further, the sending the random access response message is specifically:

or

Further, the network module also includes:

An allocation module, configured to allocate the same random access pilot set to the first type of terminal and the second type of terminal;

Further, the network module also includes:

Further, the type of the random access response message indicated in an explicit manner is specifically:

or

Further, carrying the indication information through the DCI specifically includes: carrying the indication information through the response message type indication field set in the DCI.

Further, carrying the indication information through the MAC CE is specifically: carrying the indication information through the first bit of the MAC payload part of the MAC CE.

Further, the type of the random access response message indicated in an implicit manner is specifically:

The network device 700 can implement the various processes implemented by the network device in the method embodiment shown in FIG. 1. To avoid repetition, details are not described herein again.

The network device 700 of the embodiment of the present disclosure performs a detection operation, detects a random access pilot and an uplink shared channel; sends a random access response message, the content of the random access response message is related to the detection result of the detection operation. The network device can determine the content of the random access response message according to the detection result of the random access pilot and the uplink shared channel, so as to inform the terminal of the corresponding behavior flow, and effectively reduce the random access delay.

Referring to FIG. 8, an embodiment of the present disclosure also provides a network device, including a bus 1001, a transceiver 1002, an antenna 1003, a bus interface 1004, a processor 1005, and a memory 1006.

The processor 1005 is configured to perform detection operations, and detect random access pilots and uplink shared channels;

The transceiver 1002 is configured to send a random access response message, and the content of the random access response message is related to the detection result of the detection operation.

Further, the transceiver is specifically used for:

or

Further, the processor is also used for:

or

Further, the processor is further configured to: carry the indication information through a response message type indication field set in the DCI.

Further, the processor is further configured to carry the indication information through the first bit of the MAC payload part of the MAC CE.

Further, the processor is also used for:

In this embodiment, the network device further includes: a computer program stored on the memory 1006 and running on the processor 1005. Wherein, when the computer program is executed by the processor 1005, the following steps can be implemented:

Further, when the computer program is executed by the processor 1005, it is also used to send MSG B in the 2-step random access procedure when the detection result is that the random access pilot and the uplink shared channel are detected;

or

Further, when the computer program is executed by the processor 1005, it is also used to:

or

Further, when the computer program is executed by the processor 1005, it is also used to: carry the indication information through the response message type indication field set in the DCI.

Further, when the computer program is executed by the processor 1005, it is also used to: carry the indication information through the first bit of the MAC payload part of the MAC CE.

The network device can implement the various processes implemented by the network device in the method embodiment shown in FIG. 1. To avoid repetition, details are not described herein again.

The network device of the embodiment of the present disclosure performs a detection operation, detects a random access pilot and an uplink shared channel; sends a random access response message, the content of the random access response message is related to the detection result of the detection operation. The network device can determine the content of the random access response message according to the detection result of the random access pilot and the uplink shared channel, so as to inform the terminal of the corresponding behavior flow, and effectively reduce the random access delay.

In Figure 8, the bus architecture (represented by bus 1001), bus 1001 can include any number of interconnected buses and bridges, bus 1001 will include one or more processors represented by processor 1005 and memory represented by memory 1006 The various circuits are linked together. The bus 1001 can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface 1004 provides an interface between the bus 1001 and the transceiver 1002. The transceiver 1002 may be one element or multiple elements, such as multiple receivers and transmitters, and provide a unit for communicating with various other devices on a transmission medium. The data processed by the processor 1005 is transmitted on the wireless medium through the antenna 1003. Furthermore, the antenna 1003 also receives the data and transmits the data to the processor 1005.

The processor 1005 is responsible for managing the bus 1001 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 1006 may be used to store data used by the processor 1005 when performing operations.

Optionally, the processor 1005 may be a CPU, ASIC, FPGA or CPLD.

Optionally, an embodiment of the present disclosure further provides a network device, including a processor 1005, a memory 1006, a computer program stored on the memory 1006 and running on the processor 1005, and the computer program is executed by the processor 1005 In this case, each process of the random access method embodiment shown in FIG. 1 can be realized, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated here.

Optionally, an embodiment of the present disclosure further provides a network device, including a processor 1005, a memory 1006, a computer program stored on the memory 1006 and running on the processor 1005, and the computer program is executed by the processor 1005 At this time, each process of the indication method embodiment shown in FIG. 4 can be realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

Referring to FIG. 9, FIG. 9 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure. As shown in FIG. 9, a terminal 900 includes:

The sending module 901 is configured to send a message, and the message includes a random access pilot and uplink data;

The detection module 902 is used to detect random access response messages;

The determining module 903 is configured to determine the user behavior according to the content of the random access response message when the random access response message is detected.

or

Further, the type of the random access response message is determined in an explicit manner or an implicit manner.

Further, determining the type of the random access response message in an explicit manner is specifically:

or

Further, the determining the type of the random access response message through the indication information carried in the DCI specifically includes: determining the type of the random access response message through the response message type indication field in the DCI.

Further, determining the type of the random access response message through the indication information carried by the MAC CE specifically includes: determining the type of the random access response message through the indication information carried in the first bit of the MAC payload part of the MAC-CE Types of.

The terminal 900 can implement various processes implemented by the terminal in the method embodiment shown in FIG. 3, and to avoid repetition, details are not described herein again.

The terminal 900 of the embodiment of the present disclosure sends a message, the message includes a random access pilot and uplink data; detects a random access response message; in the case of detecting a random access response message, according to the random access response The content of the message determines user behavior. The terminal determines the behavior process corresponding to the terminal according to the content of the received random access response message, which can avoid the terminal from repeatedly initiating the random access process and effectively reduce the random access delay of the terminal.

10 is a schematic structural diagram of another terminal that implements various embodiments of the present disclosure. The terminal 1100 includes but is not limited to: a transceiver unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, User input unit 1107, interface unit 1108, memory 1109, processor 1110, power supply 1111 and other components. Those skilled in the art can understand that the terminal structure shown in FIG. 10 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange different components. In the embodiments of the present disclosure, terminals include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle-mounted terminals, wearable devices, and pedometers.

Wherein, the transceiver unit 1101 sends a message, and the message includes a random access pilot and uplink data;

The processor 1110 is configured to detect a random access response message; when a random access response message is detected, determine a user behavior according to the content of the random access response message.

or

Further, it also includes:

or

The terminal 1100 can implement each process implemented by the terminal in the method embodiment shown in FIG. 3. To avoid repetition, details are not described herein again.

The terminal 1100 in the embodiment of the present disclosure sends a message, the message includes a random access pilot and uplink data; detects a random access response message; in the case of detecting a random access response message, according to the random access response The content of the message determines user behavior. The terminal determines the behavior process corresponding to the terminal according to the content of the received random access response message, which can avoid the terminal from repeatedly initiating the random access process and effectively reduce the random access delay of the terminal.

It should be understood that, in the embodiment of the present disclosure, the transceiver unit 1101 can be used for receiving and sending signals during the process of sending and receiving information or talking. Specifically, the downlink data from the base station is received and sent to the processor 1110 for processing; Uplink data is sent to the base station. Generally, the transceiver unit 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the transceiver unit 1101 may also communicate with the network and other devices through a wireless communication system.

The terminal provides users with wireless broadband Internet access through the network module 1102, such as helping users to send and receive emails, browse web pages, and access streaming media.

The audio output unit 1103 may convert the audio data received by the transceiving unit 1101 or the network module 1102 or stored in the memory 1109 into audio signals and output them as sounds. Moreover, the audio output unit 1103 may also provide audio output related to a specific function performed by the terminal 1100 (for example, call signal reception sound, message reception sound, etc.). The audio output unit 1103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1104 is used to receive audio or video signals. The input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042, and the graphics processor 11041 is configured to respond to still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed. The processed image frame can be displayed on the display unit 1106. The image frame processed by the graphics processor 11041 may be stored in the memory 1109 (or other storage medium) or sent via the transceiver unit 1101 or the network module 1102. The microphone 11042 can receive sound, and can process such sound into audio data. The processed audio data can be converted into a format that can be sent to a mobile communication base station via the transceiver unit 1101 for output in the case of a telephone call mode.

The terminal 1100 further includes at least one sensor 1105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 11061 according to the brightness of the ambient light. The proximity sensor can close the display panel 11061 and/or when the terminal 1100 is moved to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal posture (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; sensor 1105 can also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared Sensors, etc., will not be repeated here.

The display unit 1106 is used to display information input by the user or information provided to the user. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), etc.

The user input unit 1107 can be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the terminal. Specifically, the user input unit 1107 includes a touch panel 11071 and other input devices 11072. The touch panel 11071, also known as a touch screen, can collect user touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 11071 or near the touch panel 11071. operating). The touch panel 11071 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it The processor 1110 receives and executes the command sent by the processor 1110. In addition, the touch panel 11071 can be realized by various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 11071, the user input unit 1107 may also include other input devices 11072. Specifically, other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.

Further, the touch panel 11071 can cover the display panel 11061. When the touch panel 11071 detects a touch operation on or near it, it is transmitted to the processor 1110 to determine the type of the touch event, and then the processor 1110 determines the type of the touch event. The type of event provides corresponding visual output on the display panel 11061. Although in FIG. 6, the touch panel 11071 and the display panel 11061 are used as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 11071 and the display panel 11061 may be integrated. Realize the input and output functions of the terminal, which are not limited here.

The interface unit 1108 is an interface for connecting an external device with the terminal 1100. For example, the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (input/output, I/O) port, video I/O port, headphone port, etc. The interface unit 1108 may be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 1100 or may be used to communicate between the terminal 1100 and the external device. Transfer data between.

The memory 1109 can be used to store software programs and various data. The memory 1109 may mainly include a program storage area and a data storage area. The program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data (such as audio data, phone book, etc.) created by the use of mobile phones. In addition, the memory 1109 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 1110 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal, and executes by running or executing software programs and/or modules stored in the memory 1109, and calling data stored in the memory 1109. Various functions of the terminal and processing data, so as to monitor the terminal as a whole. The processor 1110 may include one or more processing units; optionally, the processor 1110 may integrate an application processor and a modem processor. The application processor mainly processes the operating system, user interface, and application programs, etc. The adjustment processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 1110.

The terminal 1100 may also include a power source 1111 (such as a battery) for supplying power to various components. Optionally, the power source 1111 may be logically connected to the processor 1110 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.

In addition, the terminal 1100 includes some functional modules not shown, which will not be repeated here.

Optionally, an embodiment of the present disclosure further provides a terminal, including a processor 1110, a memory 1109, a computer program stored on the memory 1109 and capable of running on the processor 1110, when the computer program is executed by the processor 1110 Each process of the random access method embodiment shown in FIG. 3 is implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here.

Optionally, an embodiment of the present disclosure further provides a terminal, including a processor 1110, a memory 1109, a computer program stored on the memory 1109 and capable of running on the processor 1110, when the computer program is executed by the processor 1110 Each process of the indication method embodiment shown in FIG. 5 is implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here.

FIG. 11 is a schematic structural diagram of a network device provided by an embodiment of the disclosure. As shown in FIG. 11, the network device 1200 includes:

The indication module 1201 is used to indicate the type of the random access response message in an explicit or implicit manner.

Further, when the type of the random access response message is explicitly indicated by the network device, the DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the random access response message. Type of access response message;

or

In this embodiment, the type of the random access response message is indicated in an explicit or implicit manner. For network devices that can support both the 4-step random access process and the 2-step random access process, the explicit or implicit method The mode indicates the type of the random access response message, so as to inform the terminal of the corresponding behavior flow.

FIG. 12 is a schematic structural diagram of a network device provided by an embodiment of the disclosure. As shown in FIG. 11, a terminal 1300 includes:

The determining module 1301 is configured to determine the type of the random access response message, the type of the random access response message being indicated by the network device in an explicit manner or an implicit manner.

or

The terminal 1300 in this embodiment determines the type of the random access response message, and the type of the random access response message is indicated by the network device in an explicit or implicit manner. In this way, for a terminal that can support a 4-step random access process and a 2-step random access process at the same time, the network device can indicate the type of the random access response message in an explicit or implicit manner, so as to inform the terminal of the corresponding behavior Process.

The embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, each process of the random access method embodiment shown in FIG. 1 is implemented, And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.

The embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, each process of the random access method embodiment shown in FIG. 3 is implemented. And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.

The embodiment of the present disclosure also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the instruction method embodiment shown in FIG. To achieve the same technical effect, in order to avoid repetition, I will not repeat them here.

Wherein, the computer-readable storage medium, such as ROM, RAM, magnetic disk or optical disk, etc.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article or device that includes the element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of the present disclosure essentially or the part that contributes to the related technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk). ) Includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present disclosure.

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 the present disclosure.

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 embodiments provided in this application, it should be understood that the disclosed 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 the various embodiments of the present disclosure 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. Based on this understanding, the technical solution of the present disclosure essentially or the part that contributes to the related technology can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a A computer device (which may be a personal computer, a server, or a network device, etc.) executes all or part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by controlling the relevant hardware through a computer program. The program can be stored in a computer readable storage medium. When executed, it may include the processes of the above-mentioned method embodiments. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.

It can be understood that the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, modules, units, and sub-units can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSP Device, DSPD) ), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, used to implement Described functions in other electronic units or combinations thereof.

For software implementation, the technology described in the embodiments of the present disclosure can be implemented through modules (for example, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure. The software codes can be stored in the memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

The embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present disclosure, many forms can be made without departing from the purpose of the present disclosure and the scope of protection of the claims, all of which fall within the protection of the present disclosure.

Claims

A random access method for network equipment, including:

Perform detection operations to detect random access pilots and uplink shared channels;

A random access response message is sent, and the content of the random access response message is related to the detection result of the detection operation.
The random access method according to claim 1, wherein the sending the random access response message specifically includes:

In the case where the detection result is that the random access pilot and the uplink shared channel are detected, the MSG B in the 2-step random access procedure is sent;

or

If the detection result is that only the random access pilot is detected but the uplink shared channel is not detected, the MSG 2 in the 4-step random access procedure is sent;

or

If the detection result is that the random access pilot and the uplink shared channel are not detected, the random access response message is not sent.
The random access method according to claim 1, wherein before the performing the detection operation and detecting the random access pilot and the uplink shared channel, the method further comprises:

Allocating the same random access pilot set to the terminal of the first type and the terminal of the second type;

The terminal of the first type is a terminal that supports a 4-step random access procedure;

The second type of terminal is a terminal that supports a 2-step random access procedure.
The random access method according to claim 1, wherein, after performing a detection operation to detect a random access pilot and an uplink shared channel, the method further comprises:

The type of the random access response message is indicated in an explicit or implicit manner.
The random access method according to claim 4, wherein the explicit indication of the type of the random access response message is specifically:

Carrying indication information through downlink control information DCI, where the indication information is used to indicate the type of the random access response message, and the DCI is used to schedule the random access response message;

or

The media access control control element MAC CE carries indication information, the indication information is used to indicate the type of the random access response message, and the MAC CE belongs to the media access control protocol data unit MAC that carries the random access response message. PDU.
The random access method according to claim 5, wherein carrying the indication information through the DCI is specifically: carrying the indication information through the response message type indication field set in the DCI.
The random access method according to claim 5, wherein the indication information carried by the MAC CE is specifically: the indication information is carried by the first bit of the MAC payload part of the MAC CE.
The random access method according to claim 4, wherein the implicitly indicating the type of the random access response message is specifically:

The type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message.
A random access method for terminals, including:

Sending a message, the message including random access pilot and uplink data;

Detect random access response message;

When a random access response message is detected, the user behavior is determined according to the content of the random access response message.
The random access method according to claim 9, wherein:

The content of the random access response message is related to the detection result;

The detection result is the result obtained by the network equipment detecting the random access pilot and the uplink shared channel.
The random access method according to claim 10, wherein:

In the case where the detection result is that the random access pilot and the uplink shared channel are detected, the random access response message is MSG B in the 2-step random access procedure;

or

In the case where the detection result is that only the random access pilot is detected, the random access response message is MSG 2 in the 4-step random access procedure.
The random access method according to claim 9, further comprising:

The type of the random access response message is determined in an explicit or implicit manner.
The random access method according to claim 12, wherein the explicit determination of the type of the random access response message is specifically:

Determining the type of the random access response message according to the indication information carried in the downlink control information DCI, where the DCI is used to schedule the random access response message;

or

The type of the random access response message is determined by the indication information carried by the media access control control element MAC CE, and the MAC CE belongs to the media access control protocol data unit MAC PDU that carries the random access response message.
The random access method according to claim 13, wherein the determining the type of the random access response message through the indication information carried in the DCI is specifically: determining the random access response through the response message type indication field in the DCI The type of message.
The random access method according to claim 13, wherein the determination of the type of the random access response message through the indication information carried by the MAC CE is specifically: through the first 1 bit of the MAC payload part of the MAC-CE. The indication information is used to determine the type of random access response message.
The random access method according to claim 12, wherein the implicitly determining the type of the random access response message is specifically:

The random access response message type is implicitly determined through the scrambling sequence used to schedule the DCI of the random access response message.
An indication method for network equipment, including:

The type of the random access response message is indicated in an explicit or implicit manner.
An indication method for terminals, including:

The type of the random access response message is determined, and the type of the random access response message is indicated by the network device in an explicit or implicit manner.
The indicating method according to claim 17 or 18, wherein:

When the type of the random access response message is explicitly indicated by the network device, the downlink control information DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the random access response message. Type of access response message;

or

In the case that the type of the random access response message is explicitly indicated by the network device, the MAC CE in the media access control protocol data unit MAC PDU carrying the random access response message carries the indication information , The indication information is used to indicate the type of the random access response message;

or

When the type of the random access response message is implicitly indicated by the network device, the type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message .
The indication method according to claim 19, wherein:

When the DCI carries the indication information, the indication information is carried by the response message type indication field set in the DCI;

or

When the MAC CE carries the indication information, the first bit of the MAC payload part of the MAC CE carries the indication information.
The indication method according to claim 17 or 18, wherein the random access response message is MSG B in a 2-step random access procedure; or, the random access response message is a 4-step random access procedure MSG 2.
A random access method for terminals, including:

Sending a message, the message including: random access pilot and uplink data; the uplink data is sent at a potential transmission opportunity of the physical uplink shared channel PUSCH;

The terminal detects the random access response message in a time window, and the starting position of the time window is: the first symbol of the target control resource set;

The target control resource set is the first control resource set that can be monitored after the PUSCH potential transmission opportunity; the first symbol of the target control resource set and the last symbol of the PUSCH occurrence are separated by X symbols, and the X Is a positive integer.
The method according to claim 22, wherein: the terminal detecting the random access response message in the time window comprises determining the type of the random access response message.
The method according to claim 22 or 23, wherein:

The downlink control information DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the type of the random access response message;

or

The media access control element MAC CE in the media access control protocol data unit MAC PDU carrying the random access response message carries indication information, and the indication information is used to indicate the type of the random access response message;

or

The type of the random access response message is indicated by the scrambling sequence used to schedule the DCI of the random access response message.
A network device including a processor and a transceiver,

The processor is configured to perform detection operations, and detect random access pilots and uplink shared channels;

The transceiver is configured to send a random access response message, and the content of the random access response message is related to the detection result of the detection operation.
The network device according to claim 25, wherein the transceiver is specifically used for:

In the case where the detection result is that the random access pilot and the uplink shared channel are detected, the MSG B in the 2-step random access procedure is sent;

or

If the detection result is that only the random access pilot is detected but the uplink shared channel is not detected, the MSG 2 in the 4-step random access procedure is sent;

or

If the detection result is that the random access pilot and the uplink shared channel are not detected, the random access response message is not sent.
The network device according to claim 25, wherein the processor is further configured to:

Allocating the same random access pilot set to the terminal of the first type and the terminal of the second type;

The terminal of the first type is a terminal that supports a 4-step random access procedure;

The second type of terminal is a terminal that supports a 2-step random access procedure.
The network device according to claim 25, wherein the processor is further configured to:

The type of the random access response message is indicated in an explicit or implicit manner.
The network device according to claim 28, wherein the processor is further configured to:

Carrying indication information through downlink control information DCI, the indication information is used to indicate the type of the random access response message, and the DCI is used to schedule the random access response message;

or

The media access control control element MAC CE carries indication information, the indication information is used to indicate the type of the random access response message, and the MAC CE belongs to the media access control protocol data unit MAC that carries the random access response message. PDU.
The network device according to claim 29, wherein the processor is further configured to: carry the indication information through a response message type indication field set in the DCI.
The network device according to claim 29, wherein the processor is further configured to: carry the indication information by using the first bit of the MAC payload part of the MAC CE.
The network device according to claim 28, wherein the processor is further configured to:

The type of the random access response message is implicitly indicated through the scrambling sequence used to schedule the DCI of the random access response message.
A terminal including a processor and a transceiver:

The transceiver is used to send messages, and the messages include random access pilots and uplink data;

The processor is configured to detect a random access response message; in the case of detecting a random access response message, determine a user behavior according to the content of the random access response message.
The terminal according to claim 33, wherein:

The content of the random access response message is related to the detection result;

The detection result is the result obtained by the network equipment detecting the random access pilot and the uplink shared channel.
The terminal according to claim 34, wherein:

In the case where the detection result is that the random access pilot and the uplink shared channel are detected, the random access response message is MSG B in the 2-step random access procedure;

or

In the case where the detection result is that only the random access pilot is detected, the random access response message is MSG 2 in the 4-step random access procedure.
The terminal according to claim 33, further comprising:

The type of the random access response message is determined in an explicit or implicit manner.
The terminal according to claim 36, wherein the explicit determination of the type of the random access response message is specifically:

Determining the type of the random access response message according to the indication information carried in the downlink control information DCI, where the DCI is used to schedule the random access response message;

or

The type of the random access response message is determined by the indication information carried by the media access control control element MAC CE, and the MAC CE belongs to the media access control protocol data unit MAC PDU that carries the random access response message.
The terminal according to claim 37, wherein the determining the type of the random access response message through the indication information carried in the DCI specifically comprises: determining the type of the random access response message through the response message type indication field in the DCI .
The terminal according to claim 37, wherein the determination of the type of the random access response message by the indication information carried by the MAC CE is specifically: the indication information carried by the first bit of the MAC payload part of the MAC-CE To determine the type of random access response message.
The terminal according to claim 36, wherein the implicitly determining the type of the random access response message is specifically:

The random access response message type is implicitly determined through the scrambling sequence used to schedule the DCI of the random access response message.
A network device, including:

The indication module is used to indicate the type of random access response message in an explicit or implicit manner.
A terminal, including:

The determining module is used to determine the type of the random access response message, the type of the random access response message being indicated by the network device in an explicit or implicit manner.
A terminal including a processor and a transceiver:

The transceiver is used to send a message, and the message includes: random access pilot and uplink data; the uplink data is sent at a potential transmission opportunity of the physical uplink shared channel PUSCH;

The processor is used by the terminal to detect a random access response message in a time window, and the starting position of the time window is: the first symbol of the target control resource set;

The target control resource set is the first control resource set that can be monitored after the PUSCH potential transmission opportunity; the first symbol of the target control resource set and the last symbol of the PUSCH occurrence are separated by X symbols, and the X Is a positive integer.
The terminal according to claim 43, wherein: the terminal detecting the random access response message in the time window comprises determining the type of the random access response message.
The terminal according to claim 43 or 44, wherein:

The downlink control information DCI used to schedule the random access response message carries indication information, and the indication information is used to indicate the type of the random access response message;

or

The media access control element MAC CE in the media access control protocol data unit MAC PDU carrying the random access response message carries indication information, and the indication information is used to indicate the type of the random access response message;

or

The type of the random access response message is indicated by the scrambling sequence used to schedule the DCI of the random access response message.
A network device comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor. The computer program is executed by the processor to implement any of claims 1 to 8 One of the steps in the random access method.
A terminal, comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor. The computer program is executed by the processor to implement claims 9 to 16, 22 to Steps in the random access method described in any one of 24.
A network device comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor. The computer program is executed by the processor to implement claims 17, 19-21 Steps in any one of the indicating methods.
A terminal comprising a processor, a memory, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor is implemented as in claims 18, 19-21 Any one of the steps in the indicating method.
A computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the random access method according to any one of claims 1 to 8 is implemented step.
A computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the random interface according to any one of claims 9 to 16, 22 to 24 is realized. Steps into the method.
A computer-readable storage medium with a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the instruction method according to any one of claims 17, 19-21 step.
A computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the instruction method according to any one of claims 18 and 19-21 is implemented step.