KR-20260064770-A - Adaptive Operating Method of Up-link Data and a base-station device supporting the same

KR20260064770AKR 20260064770 AKR20260064770 AKR 20260064770AKR-20260064770-A

Abstract

The present invention discloses an adaptive uplink data processing method and a base station device supporting the same, wherein a processor of a base station device transmits an uplink pre-allowance message to a user terminal including a first limit size defining a maximum transmittable uplink data size; receives uplink data from the user terminal at a plurality of time points; compares the sizes of the uplink data received at the plurality of time points; generates an updated uplink pre-allowance message in which the maximum uplink data size among the uplink data is reset to the first limit size; and transmits the updated uplink pre-allowance message to the user terminal.

Inventors

한종원

Assignees

에스케이텔레콤 주식회사

Dates

Publication Date: 20260508
Application Date: 20241029

Claims (10)

Regarding the uplink data processing method, A step in which a processor of a base station device transmits an uplink pre-allowance message to a user terminal, the message including a first limit size that defines the maximum transmittable uplink data size; A step of receiving uplink data from the above user terminal at multiple points in time; A step of comparing the sizes of the received uplink data at multiple points in time; A step of generating an updated uplink pre-allowance message in which the maximum uplink data size among the above uplink data is reset to the first limit size; An adaptive uplink data processing method characterized by including the step of transmitting the updated uplink pre-allowance message to the user terminal.
In paragraph 1, The above receiving step is, A step of receiving splitting information corresponding to a situation where the received uplink data is larger than the first limit size and receiving first limit size uplink data corresponding to the first limit size; A step of storing the first limited size uplink data and the splitting information; An adaptive uplink data processing method characterized by including the step of transmitting to the user terminal a modified uplink pre-allowance message that allocates resources in relation to the remaining uplink data size included in the above-mentioned split information.
In paragraph 2, A step of receiving remaining uplink data in response to the transmission of the above-mentioned modified uplink pre-allowance message; A step of combining the stored first limited-size uplink data and the remaining uplink data; An adaptive uplink data processing method characterized by further including the step of processing the combined uplink data above.
In paragraph 2, The step of generating the above-mentioned updated uplink pre-allowance message is, An adaptive uplink data processing method characterized by including the step of excluding the size of the combined uplink data when calculating the maximum uplink data size if the reception rate of the combined uplink data is less than a specified threshold value.
In paragraph 2, The step of generating the above-mentioned updated uplink pre-allowance message is, An adaptive uplink data processing method characterized by including the step of applying the size of the combined uplink data when calculating the maximum uplink data size if the reception rate of the combined uplink data is greater than or equal to a specified threshold value.
In paragraph 1, The step of transmitting the above-mentioned uplink pre-authorization message to the user terminal is, An adaptive uplink data processing method characterized by including the step of setting the first limit size based on the previous uplink data transmission history of the user terminal.
As a computer program stored on a computer-readable recording medium, The above computer program is, A computer program comprising instructions for a processor to perform a method according to any one of paragraphs 1 through 6.
In base station devices, A memory that stores at least one instruction configured so that the processor of the base station device supports the uplink pre-scheduling function of the base station device; The above at least one instruction is, Transmit an uplink pre-approval message to a user terminal that includes uplink data transmission conditions of a set first limit size, and Uplink data is received from the above user terminal at multiple points in time, and Compare the sizes of the uplink data received at multiple points in time above, and A base station device supporting adaptive uplink data processing, characterized by being configured to transmit an updated uplink pre-allowance message to the user terminal, in which the maximum uplink data size among the above uplink data is reset to the first limit size.
In paragraph 8, The above at least one instruction is, When splitting information corresponding to a situation where the received uplink data is larger than the first limit size and first limit size uplink data corresponding to the first limit size are received, the first limit size uplink data and the splitting information are stored, and then a modified uplink pre-allowance message with resource allocation related to the remaining uplink data size included in the splitting information is transmitted to the user terminal. A base station device supporting adaptive uplink data processing, characterized by being configured to combine the stored first limited-size uplink data and the remaining uplink data and process the combined uplink data when receiving the remaining uplink data in response to the transmission of the above-mentioned modified uplink pre-allowance message.
In paragraph 8, The above at least one instruction is, If the reception rate of the combined uplink data is less than a specified threshold value, the size of the combined uplink data is excluded when calculating the maximum uplink data size, A base station device supporting adaptive uplink data processing, characterized in that when the reception rate of the combined uplink data is greater than or equal to a specified threshold value, the size of the combined uplink data is applied when calculating the maximum uplink data size.

Description

Adaptive Operating Method of Up-link Data and a base-station device supporting the same The present invention relates to a technology capable of processing pre-scheduling for uplink data more efficiently. Uplink Pre-scheduling (UL) is one of the functions that can effectively reduce latency during small uplink data transmission for a specific User Equipment (UE). In situations where uplink pre-scheduling is not applied, the user terminal can perform uplink data transmission operations (e.g., PUSCH (Physical Uplink Shared Channel) Transmission) only after various signals have been transmitted and received between the base station (e.g., gNB) and the user terminal. Consequently, delays for signal transmission and reception are inevitable in uplink data transmission from the user terminal's perspective. For instance, in situations where uplink pre-scheduling is not applied, when uplink data to be transmitted from the user terminal to the base station device is generated, the user terminal sends a Scheduling Request (SR) message to the base station device, and the base station device sends an SR Grant message to the user terminal, after which the user terminal can transmit the uplink data (e.g., PUSCH Transmission) to the base station device. As such, even if uplink data is generated from the user terminal side, delay occurs because negotiations for resource allocation must be performed with the base station device. Meanwhile, when the uplink pre-scheduling function is applied, the base station device sends an uplink pre-grant message (UL pre-grant) to the user terminal at regular intervals. Consequently, when uplink data to be transmitted from the user terminal to the base station device is generated, the user terminal can immediately transmit the uplink data to the base station device in accordance with the data size specified in the uplink pre-grant message. As a result, since the user terminal does not perform signal transmission and reception for separate negotiation regarding uplink data transmission, the delay time from uplink data generation to transmission can be reduced. In this process, if no uplink data to be transmitted to the base station device is generated, the user terminal either does not perform a separate message transmission or sends a configured padding message to the base station device. Additionally, the system is designed so that if the user terminal transmits large data exceeding a set size to the base station device, the data transmission function based on the aforementioned uplink pre-grant is not activated. Although the aforementioned uplink pre-scheduling function provides the advantage of reducing latency when transmitting small packets, PDCCH Overhead may occur because the base station device continuously sends uplink pre-grant messages to the user terminal even when uplink data to be sent by the user terminal to the base station device (200) does not occur for a long time. Additionally, the base station device can change the uplink pre-grant size (UL Pre-grant size). In this process, if the uplink pre-grant size is set too large compared to the size of the uplink data to be transmitted by the user terminal, the user terminal must load uplink data into the corresponding grant section and send empty data with zero-padding in the remaining space, which may result in wasted uplink resources. Furthermore, if the uplink pre-grant size is set too small compared to the size of the uplink data to be transmitted by the user terminal, the user terminal must load uplink data into the corresponding grant section and repeatedly send the remaining data to the next grant section, which increases the latency until all uplink data transmission is completed and consequently increases the PDCCH (Physical downlink control channel) overhead. FIG. 1 is a diagram showing an example of a wireless communication system environment to which an uplink pre-scheduling function according to an embodiment of the present invention is applied. FIG. 2 is a diagram showing an example of a user terminal configuration according to an embodiment of the present invention. FIG. 3 is a diagram showing an example of a base station device configuration according to an embodiment of the present invention. FIG. 4 is a diagram showing an example of a comparison of the size of maximum transmittable uplink data and uplink data generated at a user terminal according to an embodiment of the present invention. FIG. 5 is a diagram showing an example of signal flow according to uplink pre-scheduling operation between a user terminal and a base station device according to an embodiment of the present invention. FIG. 6 is a diagram showing another example of comparing the maximum transmittable uplink data size and the uplink data size generated at a user terminal according to an embodiment of the present invention. FIG. 7 is a diagram showing another example of signal flow according to uplink pre-scheduling operation between a user te