Continuous transmission method for random access process of 5G network

Abstract

The invention provides a random access process continuous transmission method for a 5G network, and relates to the technical field of a random access process of wireless cellular communication. The base station receives a first data message sent by the user equipment, returns a second data message to the user equipment according to the content of the message, and instructs the user equipment to continue to send the data message or not to send the data message; in a preset continuous transmission waiting window, if the base station fails to decode or does not receive a data message sent by the user equipment, feeding back an unconfirmed signaling message to the user equipment; and if the base station receives the data message sent by the user equipment and successfully decodes the data message, feeding back an acknowledgement signaling message to the user equipment, receiving the acknowledgement signaling message by the user equipment, multiplexing the resource configuration of the first data message, and continuing to send the data message to the base station. According to the access process of the base station and the user equipment, a rigid resource utilization mode is changed, the utilization rate of communication resources is improved, and the overhead of access signaling and energy is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of random access procedures for wireless cellular communications, and more specifically, to a continuous transmission method for random access procedures for 5G networks. Background Art

[0002] In a typical wireless cellular communication system such as the Long Term Evolution (LTE) system, a user equipment (UE) needs to establish a connection with a base station (BS) in order to transmit data. The process before establishing the connection is usually called a random access (RA) process. The base station issues an uplink scheduling grant, informing the UE that it can start sending data at a specified time. This random access process, which requires an explicit uplink scheduling grant to establish a connection before transmission can proceed, is also called a grant-based random access (GBRA). The signal transmission process of the grant random access mechanism is shown in the figure below. Figure 1 As shown in FIG, the terminal and the base station establish a connection relationship through four message transmissions; then, the base station uses a centralized resource scheduling algorithm to allocate exclusive time-frequency resources for data transmission to the successfully connected device.

[0003] With the large-scale commercialization of the fifth-generation mobile communication system (5G), cellular networks are playing an increasingly important role in promoting high-quality development in various industries. In response to the needs of massive machine type communications (mMTC) business scenarios, one of the three major application scenarios of 5G, 5G NR defines a mechanism for configuring authorized transmission. It allows user devices to send data on pre-configured resources without waiting for dynamic uplink scheduling permission for each transmission. It can transmit data. It is also called the Grant-Free Random Access (GFRA) mechanism. The signal transmission process diagram of the Grant-Free Random Access GFRA mechanism is shown below. Figure 2 However, GFRA is prone to serious congestion of random access channels due to competing attempts by a large number of devices in high-load scenarios. In order to further reduce the overall delay of the random access process, reduce the number of corresponding signaling steps, and reduce overall power consumption, the 3GPP proposed a two-step unlicensed random access. The signal transmission process diagram of the two-step unlicensed random access mechanism is shown in the figure below. Figure 3 This mechanism combines the preamble and data message in the traditional 4-step random access process into MsgA and combines the random access request response and contention resolution message into MsgB.

[0004] Despite this, a key flaw in the existing 5G GFRA mechanism lies in its rigid resource utilization model. Taking 5GNR's two-step unlicensed random access as an example, it follows the principles of the slotted Aloha protocol. Each data packet from a device is transmitted with a certain probability in each time slot or time-frequency resource block. Each transmission decision is made only for the current time-frequency resource, competing for at most one time-frequency resource block. In the sporadic small message mMTC scenario, this model is effective and feasible due to the light channel load and small number of device messages. However, when a device has multiple data packets to transmit continuously, the resource utilization model and decision-making mechanism require the device to make multiple decisions and compete multiple times, resulting in low communication resource utilization and excessive access signaling and energy overhead. Summary of the Invention

[0005] In order to solve the problems of low resource utilization, large signaling overhead and high energy consumption faced by existing unlicensed random access methods when processing multi-message transmission, the present invention proposes a continuous transmission method for random access process of 5G network, which changes the rigid resource utilization mode, improves the utilization of communication resources, and reduces the overhead of access signaling and energy.

[0006] In order to achieve the above technical effects, the technical solutions of the present invention are as follows: In a first aspect, the present application proposes a method for continuous transmission of a random access process for a 5G network, comprising the following steps: S1. The base station receives a first data packet sent by the user equipment, and according to the first data packet, returns a second data packet to the user equipment; the second data packet is used to instruct the user equipment to continue to send data packets or no longer send data packets; S2. Within the preset continuous transmission waiting window, the base station is in a state of continuously receiving and decoding data packets sent from the user equipment. If a data packet sent from the user equipment is received and decoded successfully, a confirmation signaling message is fed back to the user equipment and the continuous transmission waiting window is reset; if the decoding fails or the data packet sent from the user equipment is not received, an unconfirmed signaling message is fed back to the user equipment; S3. If the user equipment receives the confirmation signaling message, it continues to send data messages to the base station or stops sending data messages; otherwise, the random access process ends.

[0007] In the present technical solution, the base station first receives a first data message sent by the user equipment, and returns a second data message to the user equipment based on the first data message, for instructing the user equipment to continue sending the data message or no longer send the data message; a continuous transmission waiting window is preset, and within the preset continuous transmission waiting window, if the base station fails to decode or does not receive the data message sent by the user equipment, an unconfirmed signaling message is fed back to the user equipment; if the base station receives the data message sent by the user equipment and decodes it successfully, a confirmation signaling message is fed back to the user equipment, and the user equipment receives the confirmation signaling message, reuses the physical downlink shared channel resource configuration of the first data message, and continues to send data messages to the base station, thereby changing the rigid resource utilization mode, improving the utilization rate of communication resources, and reducing the overhead of access signaling and energy.

[0008] Preferably, the first data message includes two parts: a random access preamble and a short data message; wherein the random access preamble is transmitted on a physical random access channel, and the short data message is transmitted on a physical uplink shared channel.

[0009] Preferably, in S1, the base station receives the first data message sent by the user equipment, and returns the second data message to the user equipment according to the first data message as follows: After first detecting the first data message sent by the user equipment, the base station determines whether the short data message in the first data message is successfully transmitted in the physical uplink shared channel. If the base station does not receive the short data message, it determines that the short data message fails to be transmitted in the physical uplink shared channel. The base station returns a second data message carrying a FallbackRAR message to the user equipment using a broadcast mechanism. If the base station receives the short data message, it determines that the short data message is successfully transmitted in the physical uplink shared channel, and the base station returns a second data message carrying a Success RAR message to the user equipment by using a broadcast mechanism.

[0010] Preferably, in S2, within the preset continuous transmission waiting window, the user device continuously monitors the first identifier corresponding to the second data message; when the user device detects the first identifier corresponding to the second data message, it obtains the time-frequency domain position of the second data message from the first identifier, thereby receiving and decoding the second data message based on the time-frequency domain position of the second data message.

[0011] Preferably, after receiving the second data message, the user equipment first determines the content type carried by the second data message. If the message type is a Success RAR message, the access process is initially successful; if the message type is a Fallback RAR message, the access process is unsuccessful.

[0012] Preferably, if the user equipment contention resolution identifier in the Success RAR message matches the user equipment contention resolution identifier value sent by the user equipment in the first data message, the user equipment is successfully connected to the base station, and the base station continues to receive and decode the data messages sent by the user equipment; If the second identifier in the Fallback RAR message is different from the first index transmitted by the user equipment in the first data message, the user equipment determines that the message does not belong to itself and discards the second data message, and continues to listen for the second data message within the preset continuous transmission waiting window; If the first index and the second identifier in the Fallback RAR message are the same as those transmitted in the first data message, the user equipment fails in this random access and needs to re-initiate access.

[0013] Preferably, the preset continuous transmission waiting window in S2 In the , the user equipment is allowed to occupy multiple time slots for transmitting short data messages in one access, and the continuous transmission waiting window Not less than the interaction time of a random access process, that is, it satisfies the expression:

[0014] in, The delays required to transmit the first data packet and the second data packet respectively are identified.

[0015] Preferably, when the base station continuously receives and decodes data messages sent from the user equipment, If a data message sent from a user equipment is successfully received and a new data message is decoded at any time within the preset continuous transmission waiting window, the base station uses the physical downlink control channel and the first identification format to send an acknowledgment signaling ACK to the specific user equipment; the acknowledgment signaling ACK clearly indicates that the data message sent from the user equipment has been successfully received, and at the same time resets the preset continuous transmission waiting window Timer; If the base station does not receive the data message of the user equipment continuously within the preset continuous transmission waiting window, it sends a non-confirmation signaling NACK to the specific user equipment. This random access process is within the continuous transmission waiting window. It ends when it ends.

[0016] In a second aspect, the present application further proposes a computer device comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor executes the computer program to implement the method described in any one of claims 1 to 8.

[0017] In a third aspect, the present application further proposes a computer storage medium on which a computer program is stored. The computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the method described in any one of claims 1 to 8.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a continuous transmission method for a random access process of a 5G network, wherein a base station receives a first data packet sent by a user equipment, and returns a second data packet to the user equipment based on the first data packet, for instructing the user equipment to continue sending the data packet or not to send the data packet; a continuous transmission waiting window is preset, and within the preset continuous transmission waiting window, if the base station fails to decode or does not receive the data packet sent from the user equipment, an unconfirmed signaling message is fed back to the user equipment; if the base station receives the data packet sent from the user equipment and decodes it successfully, a confirmation signaling message is fed back to the user equipment, and the user equipment receives the confirmation signaling message, reuses the physical downlink shared channel resource configuration of the first data packet, and continues to send data packets to the base station, thereby changing the rigid resource utilization mode, improving the utilization rate of communication resources, and reducing the overhead of access signaling and energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram showing the signal transmission process of the authorization random access mechanism proposed in the background technology of the present invention; Figure 2 A schematic diagram showing the signal transmission process of the authorization-free random access mechanism proposed in the background technology of the present invention; Figure 3 A schematic diagram showing the signal transmission process of the two-step authorization-free random access mechanism proposed in the background technology of the present invention; Figure 4 A schematic diagram showing a flow chart of a continuous transmission method for a random access process in a 5G network proposed in Embodiment 1 of the present invention; Figure 5 A schematic diagram showing the structure of a computer device proposed in Example 3 of the present invention. DETAILED DESCRIPTION

[0020] The accompanying drawings are for illustrative purposes only and are not to be construed as limiting this patent; In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the actual size; It is understandable to those skilled in the art that descriptions of certain well-known contents may be omitted in the drawings.

[0021] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0022] The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent; Example 1 This embodiment proposes a method for continuous transmission of random access process for 5G network. The flowchart of this method is shown in FIG. Figure 4 , including the following steps: S1. The base station receives a first data packet sent by the user equipment, and according to the first data packet, returns a second data packet to the user equipment; the second data packet is used to instruct the user equipment to continue to send data packets or no longer send data packets; S2. Within the preset continuous transmission waiting window, the base station is in a state of continuously receiving and decoding data packets sent from the user equipment. If a data packet sent from the user equipment is received and decoded successfully, a confirmation signaling message is fed back to the user equipment and the continuous transmission waiting window is reset; if the decoding fails or the data packet sent from the user equipment is not received, an unconfirmed signaling message is fed back to the user equipment; S3. If the user equipment receives the confirmation signaling message, it continues to send data messages to the base station or stops sending data messages; otherwise, the random access process ends.

[0023] In this embodiment, the base station first receives a first data message sent by the user equipment, and returns a second data message to the user equipment based on the first data message, for instructing the user equipment to continue sending the data message or no longer send the data message; a continuous transmission waiting window is preset. Within the preset continuous transmission waiting window, if the base station fails to decode or does not receive the data message sent by the user equipment, an unconfirmed signaling message is fed back to the user equipment; if the base station receives the data message sent by the user equipment and decodes it successfully, a confirmation signaling message is fed back to the user equipment. After receiving the confirmation signaling message, the user equipment reuses the physical downlink shared channel resource configuration of the first data message and continues to send data messages to the base station, thereby changing the rigid resource utilization mode, improving the utilization rate of communication resources, and reducing the overhead of access signaling and energy.

[0024] Example 2 In this embodiment, the user equipment may be referred to as a terminal, a mobile station (MS), a mobile terminal, etc. The user equipment may communicate with one or more core networks via a radio access network (RAN). For example, the user equipment may be a mobile phone or a "cellular" phone, a computer with a mobile terminal, etc. The user equipment may also be a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device, which exchanges voice and data with the radio access network.

[0025] In this embodiment, the base station may be a base transceiver station (BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB) in Wideband Code Division Multiple Access (WCDMA), an evolved NodeB in Long Term Evolution (LTE), or a next generation NodeB (gNB) in the global 5G standard (5GNR).

[0026] In this embodiment, the first data message includes two parts: a random access preamble and a short data message; wherein the random access preamble is transmitted on a physical random access channel, and the short data message is transmitted on a physical uplink shared channel.

[0027] Specifically, before the base station receives the first data message sent by the user equipment, the user equipment also includes: To decide whether to initiate access. If it is decided to initiate access, a preamble code is randomly selected, usually a Zadoff-Chu sequence, and combined with a short data message in its own data buffer to form a first data message. The Zadoff-Chu sequence has good autocorrelation characteristics, which helps to perform accurate signal detection in complex wireless environments. The random access preamble code of the first data message is transmitted on the Physical Random Access Channel (PRACH); the short data message of the first data message is transmitted on the Physical Uplink Shared Channel (PUSCH).

[0028] Specifically, when the network between the user equipment and the base station is in a saturated state, the optimal access request probability The expression is:

[0029] in, The number of active user devices competing for the same resource pool. At this point, the system reaches a maximum access throughput of 0.2384; Perform queue analysis from the perspective of the channel, and When the access request number of each time slot (including new requests and retransmission requests) is large, it can be approximately regarded as a parameter of A Poisson random variable with a value of . Definition is the attempt rate, which indicates the competition intensity when the user equipment randomly accesses the channel. The expression is:

[0030] in, is the probability that the cache on the user equipment side is not empty. When the network between the user equipment and the base station is in a saturated state, =1, attempt rate Can be simplified to ; According to the channel vacation queuing model, the system access throughput and data throughput can be determined by the channel busy period and idle period. Only one access request can be successfully accepted, i.e. Is the frequency of successful access requests, that is, access throughput Data packets can only be successfully sent during the busy period, so the proportion of the busy period in a channel cycle is the frequency of successful data packet transmission, that is, the data throughput. ; The calculation formula for access throughput is:

[0031] The data throughput is calculated as:

[0032] in is the average busy period length, is the average length of the channel idle period, and the calculation formula is:

[0033] in The probability of clearing the data cache for the user device, when the number of user devices When it is larger, The calculation formula is:

[0034] When the network is saturated, data throughput yes A monotonically decreasing function of the maximum data throughput The calculation formula is:

[0035] in, is the number of user devices, and q is the probability that the user device initiates initial random access to the channel in step S1. According to the formula, the maximum data throughput of the random access process continuous transmission method RAST proposed in this application reaches 0.5, which exceeds the classical Aloha protocol. .

[0036] Specifically, in scenarios with Internet of Things (IoT) devices or large-scale connections, the short data messages carried by the physical uplink shared channel (PUSCH) may only contain small data payloads of the device, such as sensor information or device status, in order to reduce the number of subsequent signaling round trips.

[0037] Specifically, the competition between user devices only occurs in the conflict of preamble codes. Although the M preamble codes are mutually orthogonal, there will be no collision between different preamble codes. However, when multiple devices use the same preamble code, a collision will occur when accessing the base station, resulting in the inability to complete the identification of the device identity. It should be understood that multiple user devices belonging to a cellular cell can reuse the time and frequency resources of the random access channel to send random access preamble codes. It should also be understood that even if multiple devices use different preamble codes, and the PUSCH resources associated with different preamble codes are independent of each other, it does not rule out the possibility that the base station only successfully decodes the preamble code but cannot decode the physical uplink shared channel PUSCH due to different demodulation requirements of the preamble code and the data.

[0038] In this embodiment, in step S1, the base station receives the first data message sent by the user equipment, and returns the second data message to the user equipment according to the first data message as follows: After first detecting the first data message sent by the user equipment, the base station determines whether the short data message in the first data message is successfully transmitted in the physical uplink shared channel. If the base station does not receive the short data message, it determines that the short data message fails to be transmitted in the physical uplink shared channel. The base station returns a second data message carrying a FallbackRAR message to the user equipment using a broadcast mechanism. If the base station receives the short data message, it determines that the short data message is successfully transmitted in the physical uplink shared channel, and the base station returns a second data message carrying a Success RAR message to the user equipment by using a broadcast mechanism.

[0039] Specifically, the base station broadcasts the second data message through a physical downlink control channel (Physical Downlink Control Channel, PDCCH) or a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH).

[0040] In this embodiment, in S2, within the preset continuous transmission waiting window, the user device continuously monitors the first identifier corresponding to the second data packet; when the user device detects the first identifier corresponding to the second data packet, it obtains the time-frequency domain position of the second data packet from the first identifier, thereby receiving and decoding the second data packet based on the time-frequency domain position of the second data packet.

[0041] Specifically, the first identifier is a DCI format 1_0 identifier; the DCI format 1_0 identifier also includes information such as a modulation and coding scheme (MCS), a number of uplink time-frequency resources (Physical Resource Block, PRB), and the like.

[0042] In this embodiment, after receiving the second data message, the user equipment first determines the content type carried by the second data message. If the message type is a Success RAR message, the access process is initially successful; if the message type is a Fallback RAR message, the access process is unsuccessful.

[0043] In this embodiment, if the user equipment contention resolution identifier in the Success RAR message matches the user equipment contention resolution identifier value sent by the user equipment in the first data message, the user equipment is successfully connected to the base station, and the base station continues to receive and decode the data messages sent by the user equipment. If the second identifier in the Fallback RAR message is different from the first index transmitted by the user equipment in the first data message, the user equipment determines that the message does not belong to itself and discards the second data message, and continues to listen for the second data message within the preset continuous transmission waiting window; If the first index and the second identifier in the Fallback RAR message are the same as those transmitted in the first data message, the user equipment fails in this random access and needs to re-initiate access.

[0044] Specifically, if the user equipment at this time has received the second data message containing the Success RAR message. At this time, the user equipment fully reuses the PUSCH resource configuration, time domain position, and modulation and coding scheme MCS used to send the first data message in step S1 for the uplink time-frequency resource PRB required for transmission. This means that subsequent data messages will periodically occupy the same PRB set as the short data message in the first data message within each transmission opportunity. The user equipment only needs to fine-tune parameters based on the configuration information such as the timing advance (TA) and transmit power control (TPC) provided in the second data message in step S2, without having to reapply for resource authorization. The data message subsequently sent by the user equipment to the base station no longer contains a preamble, but only contains pure data payload, and is transmitted on the PUSCH.

[0045] In this embodiment, the preset continuous transmission waiting window in S2 In the , the user equipment is allowed to occupy multiple time slots for transmitting short data messages in one access, and the continuous transmission waiting window Not less than the interaction time of a random access process, that is, it satisfies the expression:

[0046] in, The delays required to transmit the first data packet and the second data packet respectively are identified.

[0047] In this embodiment, when the base station continuously receives and decodes data packets sent from the user equipment, if the data packet sent from the user equipment is successfully received and a new data packet is decoded at any time within the preset continuous transmission waiting window, the base station uses the physical downlink control channel and the first identification format to send an acknowledgment signaling ACK to the specific user equipment; the acknowledgment signaling ACK clearly indicates that the data packet sent from the user equipment has been successfully received, and at the same time resets the preset continuous transmission waiting window. Timer; If the base station does not receive the data message of the user equipment continuously within the preset continuous transmission waiting window, it sends a non-confirmation signaling NACK to the specific user equipment. This random access process is within the continuous transmission waiting window. It ends when it ends.

[0048] Example 3 In this embodiment, a computer device is proposed, including a memory 101, a processor 102, and a computer program stored in the memory 101 and executable by the processor. The processor 102 executes the computer program to implement a continuous transmission method for a random access process of a 5G network. The structural diagram of the device is shown in FIG. Figure 5 shown.

[0049] In this embodiment, a computer storage medium is provided, on which a computer program is stored. The computer program includes program instructions, which, when executed by a computer, enable the computer to perform a random access procedure continuous transmission method for a 5G network.

[0050] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A method for continuous transmission of random access process for 5G network, characterized in that: The following steps are involved: S1. The base station receives a first data packet sent by the user equipment, and according to the first data packet, returns a second data packet to the user equipment; the second data packet is used to instruct the user equipment to continue to send data packets or no longer send data packets; S2. Within the preset continuous transmission waiting window, the base station is in a state of continuously receiving and decoding data packets sent from the user equipment. If a data packet sent from the user equipment is received and decoded successfully, a confirmation signaling message is fed back to the user equipment and the continuous transmission waiting window is reset; if the decoding fails or the data packet sent from the user equipment is not received, an unconfirmed signaling message is fed back to the user equipment; S3. If the user equipment receives the confirmation signaling message, it continues to send data messages to the base station or stops sending data messages; otherwise, the random access process ends.

2. The method for continuous transmission of random access process for 5G network according to claim 1, characterized in that: The first data message includes two parts: a random access preamble and a short data message; wherein the random access preamble is transmitted on a physical random access channel, and the short data message is transmitted on a physical uplink shared channel.

3. The method for continuous transmission of random access process for 5G network according to claim 2, characterized in that: In S1, the base station receives the first data message sent by the user equipment, and returns the second data message to the user equipment according to the first data message as follows: After first detecting the first data packet sent by the user equipment, the base station determines whether the short data packet in the first data packet is successfully transmitted in the physical uplink shared channel. If the base station does not receive the short data packet, it determines that the short data packet fails to be transmitted in the physical uplink shared channel. The base station returns a second data packet carrying a Fallback RAR message to the user equipment using a broadcast mechanism. If the base station receives the short data message, it determines that the short data message is successfully transmitted in the physical uplink shared channel, and the base station returns a second data message carrying a Success RAR message to the user equipment by using a broadcast mechanism.

4. The method for continuous transmission of random access process for 5G network according to claim 3, characterized in that: In S2, within the preset continuous transmission waiting window, the user equipment continuously monitors the first identifier corresponding to the second data packet; After the user equipment detects the first identifier corresponding to the second data message, it obtains the time-frequency domain position of the second data message from the first identifier, and receives and decodes the second data message based on the time-frequency domain position of the second data message.

5. The method for continuous transmission of random access process for 5G network according to any one of claims 3 or 4, characterized in that: After receiving the second data message, the user equipment first determines the content type carried by the second data message. If the message type is a Success RAR message, the access process is initially successful; if the message type is a Fallback RAR message, the access process is unsuccessful.

6. The method for continuous transmission of random access process for 5G network according to claim 5, characterized in that: If the user equipment contention resolution identifier in the Success RAR message matches the user equipment contention resolution identifier value sent by the user equipment in the first data message, the user equipment is successfully connected to the base station, and the base station continues to receive and decode the data messages sent by the user equipment; If the second identifier in the Fallback RAR message is different from the first index transmitted by the user equipment in the first data message, the user equipment determines that the message does not belong to itself and discards the second data message, and continues to listen for the second data message within the preset continuous transmission waiting window; If the first index and the second identifier in the Fallback RAR message are the same as those transmitted in the first data message, the user equipment fails in this random access and needs to re-initiate access.

7. The method for continuous transmission of random access process for 5G network according to claim 6, characterized in that: The preset continuous transmission waiting window in S2 In the , the user equipment is allowed to occupy multiple time slots for transmitting short data messages in one access, and the continuous transmission waiting window Not less than the interaction time of a random access process, that is, it satisfies the expression: in, The delays required to transmit the first data packet and the second data packet respectively are identified.

8. The method for continuous transmission of random access process for 5G network according to claim 7, characterized in that: When the base station continues to receive and decode data messages sent by the user equipment, If a data message sent from a user equipment is successfully received and a new data message is decoded at any time within the preset continuous transmission waiting window, the base station uses the physical downlink control channel and the first identification format to send an acknowledgment signaling ACK to the specific user equipment; the acknowledgment signaling ACK clearly indicates that the data message sent from the user equipment has been successfully received, and at the same time resets the preset continuous transmission waiting window. Timer; If the base station does not receive the data message of the user equipment continuously within the preset continuous transmission waiting window, it sends a non-confirmation signaling NACK to the specific user equipment. This random access process is within the continuous transmission waiting window. It ends when it ends.

9. A computer device, characterized in that: The computer device includes a memory, a processor, and a computer program stored in the memory and executable by the processor. The processor executes the computer program to implement the method according to any one of claims 1 to 8.

10. A computer storage medium, characterized in that A computer program is stored thereon, the The computer program includes program instructions, and when the program instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 8.

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