US-12628078-B2 - Method and apparatus for UE information delivery for network energy saving

Abstract

A method performed by a terminal in a wireless communication system. The method includes receiving, from a base station, a first message associated with triggering a transmission of a second message, identifying whether the transmission of the second message associated with network energy saving is triggered based on the first message, transmitting, to the base station, the second message associated with network energy saving, in case that the transmission of the second message is triggered, and receiving, from the base station, a third message associated with a network energy status of the base station configured based on the second message.

Inventors

• Sangkyu BAEK
• Anil Agiwal

Assignees

• SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date

20260512

Application Date

20230530

Priority Date

20220530

Claims (20)

1. 1 . A method performed by a terminal in a wireless communication system, the method comprising: receiving, from a base station, a first message associated with triggering a transmission of a second message; identifying whether the transmission of the second message associated with network energy saving is triggered based on the first message; transmitting, to the base station, the second message associated with network energy saving, in case that the transmission of the second message is triggered; and receiving, from the base station, a third message associated with a network energy status of the base station configured based on the second message.
2. 2 . The method of claim 1 , wherein the first message includes at least one of information on a condition for the triggering, information on a threshold associated with the triggering, or information on a periodicity for the transmission of the second message.
3. 3 . The method of claim 2 , wherein the first message further includes a configuration for at least one logical channel associated with the triggering or a configuration for at least one radio bearer associated with the triggering.
4. 4 . The method of claim 1 , wherein the second message includes at least one of information on a data volume of the terminal, information on an expected data volume of the terminal, information on an expected data rate, or information on a status of a data arrival.
5. 5 . The method of claim 1 , further comprising: identifying whether a data volume of at least one logical channel associated with the triggering is greater than or equal to a threshold; and identifying that the transmission of the second message is triggered in case that the data volume is greater than or equal to the threshold.
6. 6 . The method of claim 1 , wherein the second message includes a first field indicating whether an expected buffer size of a logical channel group is greater than 0, and a second field indicating information on the expected buffer size corresponding to an index of the logical channel group.
7. 7 . The method of claim 1 , wherein the second message includes a first field indicating whether a required data rate associated with a logical channel group is greater than 0, and a second field indicating information on the required data rate corresponding to an index of the logical channel group.
8. 8 . A method performed by a base station in a wireless communication system, the method comprising: transmitting, to a terminal, a first message associated with triggering a transmission of a second message; receiving, from the terminal, the second message associated with network energy saving, in case that the transmission of the second message is triggered based on the first message; controlling a network energy status of the base station based on the second message; and transmitting, to the terminal, a third message associated with the network energy status.
9. 9 . The method of claim 8 , wherein controlling the network energy status of the base station comprises: identifying that a data volume of the terminal is less than a threshold, based on the second message; and changing the network energy status of the base station from “on” to “off”.
10. 10 . The method of claim 8 , wherein the first message includes at least one of information on a condition for the triggering, information on a threshold associated with the triggering, or information on a periodicity for the transmission of the second message, and wherein the second message includes at least one of information on a data volume of the terminal, information on an expected data volume of the terminal, information on an expected data rate, or information on a status of a data arrival.
11. 11 . The method of claim 8 , wherein the second message includes a first field indicating whether an expected buffer size of a logical channel group is greater than 0, and a second field indicating information on the expected buffer size corresponding to an index of the logical channel group.
12. 12 . The method of claim 8 , wherein the second message includes a first field indicating whether a required data rate associated with a logical channel group is greater than 0, and a second field indicating information on the required data rate corresponding to an index of the logical channel group.
13. 13 . A terminal in a wireless communication system, the terminal comprising: a transceiver; and a controller coupled with the transceiver and configured to: receive, from a base station, a first message associated with triggering a transmission of a second message, identify whether the transmission of the second message associated with network energy saving is triggered based on the first message, transmit, to the base station, the second message associated with network energy saving, in case that the transmission of the second message is triggered, and receive, from the base station, a third message associated with a network energy status of the base station configured based on the second message.
14. 14 . The terminal of claim 13 , wherein the first message includes at least one of information on a condition for the triggering, information on a threshold associated with the triggering, or information on a periodicity for the transmission of the second message.
15. 15 . The terminal of claim 13 , wherein the second message includes at least one of information on a data volume of the terminal, information on an expected data volume of the terminal, information on an expected data rate, or information on a status of a data arrival.
16. 16 . The terminal of claim 13 , wherein the controller is further configured to: identify whether a data volume of at least one logical channel associated with the triggering is greater than or equal to a threshold, and identify that the transmission of the second message is triggered in case that the data volume is greater than or equal to the threshold.
17. 17 . A base station in a wireless communication system, the base station comprising: a transceiver; and a controller coupled with the transceiver and configured to: transmit, to a terminal, a first message associated with triggering a transmission of a second message, receive, from the terminal, the second message associated with network energy saving, in case that the transmission of the second message is triggered based on the first message, control a network energy status of the base station based on the second message, and transmit, to the terminal, a third message associated with the network energy status.
18. 18 . The base station of claim 17 , wherein for controlling the network energy status of the base station, the controller is configured to: identify that a data volume of the terminal is less than a threshold, based on the second message, and change the network energy status of the base station from “on” to “off”.
19. 19 . The base station of claim 17 , wherein the first message includes at least one of information on a condition for the triggering, information on a threshold associated with the triggering, or information on a periodicity for the transmission of the second message, and wherein the second message includes at least one of information on a data volume of the terminal, information on an expected data volume of the terminal, information on an expected data rate, or information on a status of a data arrival.
20. 20 . The base station of claim 17 , wherein the second message includes a first field indicating whether an expected buffer size of a logical channel group is greater than 0, and a second field indicating information on the expected buffer size corresponding to an index of the logical channel group.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is based on and claims priority under 35 U.S.C. 119 to Korean Patent Application No. 10-2022-0065758, filed on May 30, 2022, in the Korean Intellectual Property Office, the disclosure of which is herein incorporated by reference in its entirety. BACKGROUND 1. Field The disclosure relates to operations of a terminal and a base station in a mobile communication system. More specifically, the disclosure provides a method and an apparatus for improving power consumption of a base station (or network). 2. Description of Related Art 5th generation (5G) mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in “Sub 6 GHz” bands such as 3.5 GHz, but also in “Above 6 GHz” bands referred to as mmWave including 28 GHz and 39 GHz. In addition, it has been considered to implement 6th generation (6G) mobile communication technologies (referred to as Beyond 5G systems) in terahertz bands (for example, 95 GHz to 3 THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies. At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced mobile broadband (eMBB), ultra reliable low latency communications (URLLC), and massive machine-type communications (mMTC), there has been ongoing standardization regarding beamforming and massive multi input multi output (MIMO) for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of bandwidth part (BWP), new channel coding methods such as a low density parity check (LDPC) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service. Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as vehicle-to-everything (V2X) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, new radio unlicensed (NR-U) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE power saving, non-terrestrial network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning. Moreover, there has been ongoing standardization in air interface architecture/protocol regarding technologies such as industrial internet of things (IIoT) for supporting new services through interworking and convergence with other industries, integrated access and backhaul (IAB) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and dual active protocol stack (DAPS) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture/service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions. As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting Augmented Reality (AR), Virtual Reality (VR), Mixed Reality (MR) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication. Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new wavef