KR-20260066561-A - BASE STATION AND METHOD FOR CONTROLLING CONNECTION FOR USER EQUIPMENTS

Abstract

According to one embodiment, the base station may include a transceiver, a memory including instructions and one or more storage media, and at least one processor including a processing circuit. When the instructions are executed individually or collectively by the at least one processor, the base station may be caused to identify the number of user equipment (UE) devices to which a radio resource control (RRC) connection has been established, identify at least one user equipment in a first group to which an emergency call service is provided among the user equipment devices based on the number of user equipment devices exceeding a reference number, set the duration of a timer for disconnecting the RRC connection to a first duration for each of the at least one user equipment in the first group, and set the duration of a timer for disconnecting the RRC connection to a second duration shorter than the first duration for each of the at least one user equipment in a second group distinct from the first group.

Inventors

• 송지헌
• 윤태호

Assignees

• 삼성전자주식회사

Dates

Publication Date

20260512

Application Date

20241104

Claims (20)

1. In the case of a base station, Transmitter/Receiver; Memory comprising instructions and one or more storage media; and It includes at least one processor including a processing circuit, and When the above instructions are executed individually or collectively by the at least one processor, Identify the number of multiple user devices (user equipment, UE) to which a radio resource control (RRC) connection has been established, and Based on the number of the plurality of user devices exceeding a reference number, at least one user device of a first group among the plurality of user devices is provided with an emergency call service, and For each of the at least one user device of the first group, the duration of the timer for disconnecting the RRC connection is set to the first duration, and For each of at least one user device of a second group distinct from the first group, the base station causes the duration of a timer for disconnecting the RRC connection to be set to a second duration shorter than the first duration. Base station.
2. In claim 1, when the instructions are executed individually or collectively by the at least one processor, Identify one or more user devices among the plurality of user devices above that provide a service distinct from the emergency call service, and Causing the base station to identify at least one user device of the second group among the above one or more user devices, wherein the data drop rate is less than the reference drop rate. Base station.
3. In claim 2, when the instructions are executed individually or collectively by the at least one processor, Among the above one or more user devices, identify at least one user device of a third group in which the data drop rate is greater than or equal to the above standard drop rate, and For at least one user device of the third group above, causing the base station to set the duration of the timer for disconnecting the RRC connection to the third duration, Base station.
4. In claim 3, the third duration is, Corresponding to the first duration above, Base station.
5. In claim 1, when the instructions are executed individually or collectively by the at least one processor, Based on increasing the reference duration for the plurality of user devices according to a specified ratio, the first duration is determined, and Causing the base station to determine the second duration based on reducing the above reference duration according to the above specified ratio, Base station.
6. In claim 5, when the instructions are executed individually or collectively by the at least one processor, Until the number of the above plurality of user devices is identified to be less than or equal to the above reference number: For each of the at least one user device of the first group, the first duration is increased according to the specified ratio, and For each of at least one user device of the second group above, causing the base station to reduce the second duration according to the specified ratio, Base station.
7. In claim 5, when the instructions are executed individually or collectively by the at least one processor, A first RRC reconstruction message including information regarding the first duration is transmitted to each of the at least one user device of the first group, and Causing the base station to transmit a second RRC reconstruction message containing information regarding the second duration to each of the at least one user device of the second group, Base station.
8. In claim 7, when the instructions are executed individually or collectively by the at least one processor, In order to establish the RRC connection with the plurality of user devices, the base station is caused to transmit an RRC setup message to each of the plurality of user devices, and The above RRC setup message is, including information on the above-mentioned standard duration, Base station.
9. In claim 5, the first duration is, Set to less than the maximum duration, and The above second duration is, Set to be greater than or equal to the minimum duration, Base station.
10. In claim 1, when data is not transmitted or received between the first user device among the at least one user device of the first group and the base station during the first duration, the RRC connection between the first user device and the base station is released, and Among the at least one user device of the second group, if data is not transmitted or received between the second user device and the base station during the second duration, the RRC connection between the second user device and the base station is released. Base station.
11. In a method performed by a base station, An operation to identify the number of multiple user devices (user equipment, UE) for which an RRC (radio resource control) connection has been established; An operation to identify at least one user device of a first group among the plurality of user devices, which is provided with an emergency call service, based on the number of the plurality of user devices exceeding a reference number; For each of the at least one user device of the first group, the operation of setting the duration of a timer for disconnecting the RRC connection to a first duration; and For each of at least one user device of a second group distinguished from the first group, the operation of setting the duration of a timer for disconnecting the RRC connection to a second duration shorter than the first duration is included. method.
12. In claim 11, the above method is, An operation to identify one or more user devices among the plurality of user devices above that are provided with a service distinct from the emergency call service; and Among the above one or more user devices, the operation of identifying at least one user device of the second group in which the data drop rate is less than a reference drop rate, method.
13. In claim 12, the above method is, The operation of identifying at least one user device of a third group among the above one or more user devices, wherein the data drop rate is greater than or equal to the reference drop rate; and For at least one user device of the third group, the operation of setting the duration of a timer for disconnecting the RRC connection to a third duration, method.
14. In claim 13, the third duration is, Corresponding to the first duration above, method.
15. In claim 11, the above method is, An operation to determine the first duration based on increasing the reference duration for the plurality of user devices according to a specified ratio; and The operation of determining the second duration based on reducing the reference duration according to the specified ratio, method.
16. In claim 15, the above method is, Until the number of the above plurality of user devices is identified to be less than or equal to the above reference number: For each of the at least one user device of the first group, the first duration is increased according to the specified ratio, and For each of at least one user device of the second group, the operation of reducing the second duration according to the specified ratio, method.
17. In claim 15, the above method is, The operation of transmitting a first RRC reconstruction message containing information regarding the first duration to each of the at least one user device of the first group; and The operation of transmitting a second RRC reconstruction message containing information regarding the second duration to each of the at least one user device of the second group, method.
18. In claim 17, the above method is, To establish the RRC connection with the plurality of user devices, the operation includes transmitting an RRC setup message to each of the plurality of user devices. The above RRC setup message is, including information on the above-mentioned standard duration, method.
19. In claim 11, when data is not transmitted or received between the first user device among the at least one user device of the first group and the base station during the first duration, the RRC connection between the first user device and the base station is released, and Among the at least one user device of the second group, if data is not transmitted or received between the second user device and the base station during the second duration, the RRC connection between the second user device and the base station is released. method.
20. In a non-transient computer-readable storage medium storing one or more programs, said one or more programs, when executed by at least one processor of a base station, Identify the number of multiple user devices (user equipment, UE) to which a radio resource control (RRC) connection has been established, and Based on the number of the plurality of user devices exceeding a reference number, at least one user device of a first group among the plurality of user devices is provided with an emergency call service, and For each of the at least one user device of the first group, the duration of the timer for disconnecting the RRC connection is set to the first duration, and For each of at least one user device of a second group distinct from the first group, the method comprises instructions that cause the base station to set the duration of a timer for disconnecting an RRC connection to a second duration shorter than the first duration. Non-transient computer-readable storage media.

Description

Base station and method for controlling connection for user devices The present disclosure relates to a base station and a method for controlling connections to user devices. A base station can establish connections with multiple user devices. The base station can provide functions to manage connections for multiple user devices. Some of the multiple user devices may disconnect from the base station and connect to another base station. Some of the multiple user devices may temporarily disconnect from the base station to reduce power consumption. The information described above may be provided as related art for the purpose of aiding understanding of the present disclosure. No claim or determination is made as to whether any of the foregoing may be applied as prior art related to the present disclosure. Figure 1 illustrates an example of a wireless communication system. Figure 2a illustrates the interface between an upper network node and a lower network node. Figure 2b illustrates the fronthall interface of an O(open)-RAN(radio access network). Figure 3a illustrates the functional configuration of an upper network node. Figure 3b illustrates the functional configuration of a sub-network node. Figure 4 illustrates an example of function splitting between DU and RU. Figure 5a shows examples of control planes (C-planes). Figure 5b shows examples of user planes (U-planes). FIG. 6 illustrates an example of the operation of a base station in which an RRC connection has been established with multiple user devices. Figure 7 illustrates an example of the status of a user device associated with an RRC connection. FIG. 8 illustrates an example of the operation of a base station and a user device for exchanging information regarding the duration of a timer for RRC disconnection. FIG. 9 illustrates a flowchart regarding the operation of a base station for changing the duration of a timer for RRC disconnection. FIG. 10 illustrates a flowchart regarding the operation of a base station for changing the duration of a timer for RRC disconnection. FIG. 11a illustrates a flowchart regarding the operation of a base station for changing the duration of a timer for RRC disconnection. FIG. 11b illustrates a flowchart regarding the operation of a base station for changing the duration of a timer for RRC disconnection. FIG. 12 illustrates an example of the operation of a base station for grouping multiple user devices. The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit the scope of other embodiments. A singular expression may include a plural expression unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art described in this disclosure. Terms used in this disclosure that are defined in a general dictionary may be interpreted as having the same or similar meaning as they have in the context of the relevant technology, and are not to be interpreted in an ideal or overly formal sense unless explicitly defined in this disclosure. In some cases, even terms defined in this disclosure are not to be interpreted to exclude the embodiments of this disclosure. In the various embodiments of the present disclosure described below, a hardware-based approach is described as an example. However, since the various embodiments of the present disclosure include techniques using both hardware and software, the various embodiments of the present disclosure do not exclude a software-based approach. Terms used in the following description to refer to signals (e.g., signal, information, message, signaling), terms referring to resources (e.g., symbol, slot, subframe, radio frame, subcarrier, RE (resource element), RB (resource block), BWP (bandwidth part), occasion), terms for operation states (e.g., step, operation, procedure), terms referring to data (e.g., packet, user stream, information, bit, symbol, codeword), terms referring to channels, terms referring to network entities, terms referring to device components, etc., are examples provided for the convenience of explanation. Accordingly, the present disclosure is not limited to the terms described below, and other terms having equivalent technical meanings may be used. Additionally, in this disclosure, expressions of "greater than" or "less than" may be used to determine whether a specific condition is satisfied or fulfilled; however, this is merely for the purpose of expressing an example and does not exclude descriptions of "greater than" or "less than." Conditions described as "greater than" may be replaced with "greater than," conditions described as "less than" may be replaced with "less than," and conditions described as "greater than and less than" may be replaced with "greater than and less than." Furthermore, "A" to "B" below refer to at least one of elements from A (including A) to B (including B). Bel