US-20260129627-A1 - METHODS AND SYSTEMS FOR MANAGING A PLURALITY OF BANDWIDTH PARTS IN A WIRELESS COMMUNICATION SYSTEM

Abstract

A method performed by a base station is provided. The method includes identifying at least one of a plurality of bandwidth parts (BWP) level metrics and a plurality of user equipment (UE) level metrics for each of a plurality of BWPs for a first time window in corresponding BWP from among the plurality of BWPs, determining a BWP assignment policy based on the identified at least one of the plurality of BWP level metrics and the plurality of UE level metrics, and assigning for a second time window after the first time window, each of a plurality of UEs to each of the BWPs based on the determined BWP assignment policy.

Inventors

• Shyamal DHUA
• Ram ADITYA S
• Animesh Kumar
• Ashok Kumar Reddy CHAVVA
• Vimal Bastin EDWIN JOSEPH
• Kisuk JUN

Assignees

• SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date

20260507

Application Date

20251230

Priority Date

20240826

Claims (20)

1. 1 . A method performed by a base station in a wireless communication system, the method comprising: identifying at least one of a plurality of bandwidth part (BWP) level metrics and a plurality of user equipment (UE) level metrics for each of a plurality of BWPs for a first time window in corresponding BWP from among the plurality of BWPs; determining a BWP assignment policy based on the identified at least one of the plurality of BWP level metrics and the plurality of UE level metrics; and assigning for a second time window after the first time window, each of a plurality of UEs to each of the BWPs based on the determined BWP assignment policy.
2. 2 . The method of claim 1 , wherein the BWP assignment policy is determined to optimize a plurality of key performance indicators (KPIs) of the wireless communication system.
3. 3 . The method of claim 1 , wherein, in case that the wireless communication system is an unlicensed system, the plurality of UE level metrics include: a UE traffic queue size metric; a head of line (HoL) delay metric; an incoming packets size metric; an outgoing packets size metric; a UE channel conditions metric; and an encoding metric, wherein the UE channel conditions metric represents an average number of bits allowed to be sent by each of the plurality of UEs using a resource block (RB) in the first time window, and wherein the encoding metric represents encoding scheme for encoding assignment of each of the plurality of UEs to the corresponding BWP.
4. 4 . The method of claim 1 , wherein, in case that the wireless communication system is a licensed system, the plurality of UE level metrics include: a UE traffic queue size metric; a head of line (HoL) delay metric; an incoming packets size metric; an outgoing packets size metric; an encoding metric; a UE channel conditions metric; and a plurality of block error rate (BLER) metric.
5. 5 . The method of claim 1 , wherein, in case that the wireless communication system is a licensed system, the plurality of BWP level metrics include: a plurality of block error rate (BLER) metric in the corresponding BWP; and a number of active UEs in the corresponding BWP.
6. 6 . The method of claim 1 , wherein the determining of the BWP assignment policy further comprises: calculating an exponentially weighted average of each of the plurality of UE level metrics and the plurality of BWP level metrics for the first time window; and determining the BWP assignment policy based on the exponentially weighted average of each of the plurality of UE level metrics, the exponentially weighted average of each of the plurality of BWP level metrics, and a reward function.
7. 7 . The method of claim 6 , wherein the reward function is defined to optimize a plurality of KPIs of the wireless communication system, and wherein the wireless communication system is one of an unlicensed system and a licensed system.
8. 8 . The method of claim 6 , wherein the determining of the BWP assignment policy further comprises: determining the BWP assignment policy using an artificial intelligence (AI) model.
9. 9 . The method of claim 6 , wherein, in case that the wireless communication system is an unlicensed system, the plurality of BWP level metrics include: a listen before talk (LBT) protocol failure rate metric, a BWP size metric, an average contention window size metric, an average incumbent channel occupancy metric, and a channel conditions metric, and wherein the channel conditions metric represents an average number of bits allowed to be sent by each of the plurality of UEs using a resource block (RB) in the first time window of the corresponding BWP.
10. 10 . The method of claim 1 , wherein, in case that the wireless communication system is an unlicensed system, the determining of the BWP assignment policy further comprises: calculating a channel average weighted value of channel conditions based on the channel conditions metric for the first time window; calculating an LBT average weighted value of LBT failure rates based on the LBT failure rate metric for the first time window; and determining the BWP assignment policy based on the channel average weighted value the LBT average weighted value, and a BWP size of the corresponding BWP, wherein the BWP assignment policy is determined to optimize a plurality of KPIs of the unlicensed system.
11. 11 . The method of claim 10 , wherein the plurality of BWP level metrics include: a listen before talk (LBT) protocol failure rate metric; a BWP size metric; and a channel conditions metric, and wherein the channel conditions metric represents an average number of bits allowed to be sent by each of the plurality of UEs using a resource block (RB) in the first time window of the corresponding BWP.
12. 12 . The method of claim 10 , wherein the determining of the BWP assignment policy further comprises: determining the BWP assignment policy when a total number of active UEs in a predefined cell coverage area of the base station being less than or equal to a maximum number of UEs allowed to be scheduled per time slot in the corresponding BWP.
13. 13 . The method of claim 1 , wherein the first time window consists of a predefined number of consecutive time slots in the corresponding BWP.
14. 14 . A base station comprising: memory, comprising one or more storage media, storing instructions; and at least one processor, wherein the instructions, when executed by the at least one processor individually or collectively, cause the base station to: identify at least one of a plurality of bandwidth part (BWP) level metrics and a plurality of user equipment (UE) level metrics for each of a plurality of BWPs for a first time window in corresponding BWP from among the plurality of BWPs, determine a BWP assignment policy based on the identified at least one of the plurality of BWP level metrics and the plurality of UE level metrics, and assign for a second time window after the first time window, each of a plurality of UEs to each of the BWPs based on the determined BWP assignment policy.
15. 15 . The base station of claim 14 , wherein the BWP assignment policy is determined to optimize a plurality of key performance indicators (KPIs) of a wireless communication system.
16. 16 . The base station of claim 14 , wherein, in case that a wireless communication system is an unlicensed system, the plurality of UE level metrics include: a UE traffic queue size metric; a head of line (HoL) delay metric; an incoming packets size metric; an outgoing packets size metric; a UE channel conditions metric; and an encoding metric, wherein the UE channel conditions metric represents an average number of bits allowed to be sent by each of the plurality of UEs using a resource block (RB) in the first time window, and wherein the encoding metric represents encoding scheme for encoding assignment of each of the plurality of UEs to the corresponding BWP.
17. 17 . The base station of claim 15 , wherein, in case that the wireless communication system is a licensed system, the plurality of UE level metrics include: a UE traffic queue size metric; a head of line (HoL) delay metric; an incoming packets size metric; an outgoing packets size metric; an encoding metric; a UE channel conditions metric; and a plurality of block error rate (BLER) metric.
18. 18 . The base station of claim 15 , wherein, in case that the wireless communication system is a licensed system, the plurality of BWP level metrics include: a plurality of block error rate (BLER) metric in the corresponding BWP; and a number of active UEs in the corresponding BWP.
19. 19 . One or more non-transitory computer-readable storage media storing one or more computer programs including computer-executable instruction that, when executed by at least one processor of a base station in a wireless communication system individually or collectively, cause the base station to perform operations, the operations comprising: identifying at least one of a plurality of bandwidth part (BWP) level metrics and a plurality of user equipment (UE) level metrics for each of a plurality of BWPs for a first time window in corresponding BWP from among the plurality of BWPs; determining a BWP assignment policy based on the identified at least one of the plurality of BWP level metrics and the plurality of UE level metrics; and assigning for a second time window after the first time window, each of a plurality of UEs to each of the BWPs based on the determined BWP assignment policy.
20. 20 . The one or more non-transitory computer-readable storage media of claim 19 , wherein the BWP assignment policy is determined to optimize a plurality of key performance indicators (KPIs) of the wireless communication system.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application is a continuation application, claiming priority under 35 U.S.C. § 365(c), of an International application No. PCT/KR2024/012955, filed on Aug. 29, 2024, which is based on and claims the benefit of an Indian Provisional patent application No. 202341058251, filed on Aug. 30, 2023, in the Indian Intellectual Property Office, and of an Indian Patent Application number 202341082007, filed on Dec. 1, 2023, in the Indian Intellectual Property Office, and of an Indian Complete patent application No. 202341058251, filed on Aug. 26, 2024, in the Indian Intellectual Property Office, the disclosure of each of which is incorporated by reference herein in its entirety. BACKGROUND 1. Field The disclosure relates to a wireless communication systems. More particularly, the disclosure relates to systems and methods for managing a plurality of bandwidth parts (BWPs) in a wireless communication system. 2. Description of Related Art With the advancements in wireless technology and communication systems, the demand for wireless data traffic has increased since the deployment of 4th-generation (4G) networks. To meet such demand for wireless data traffic, efforts have been made to develop 5th-generation (5G) networks. The 5G networks have emerged as the next generation of cellular networks, offering higher data speeds, lower latency, and increased capacity compared to previous generations. To further enhance the capabilities of 5G, the 3rd generation partnership project (3GPP) proposed the expansion of new radio (NR) into NR-unlicensed (NR-U) spectrum at 5 and 6 Gigahertz (GHz) bands and millimeter wave (mmWave) operations above 60 GHz. Energy efficiency is a key performance indicator in 5G and beyond, essential for supporting various use cases like enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable and low latency communications (URLLC). Further, battery life plays a crucial role in user experience, and enhancing the performance of user equipment (UE) without compromising battery life is a challenging task. In release 15 (e.g., TS 38.300 and TS 38.211), 3GPP introduced bandwidth part (BWP) in NR, in order to serve different UE requirements, such as power saving, differing traffic requirements like higher/lower data rate, delay sensitivity, service type, or the like, at a more granular level. A BWP is a contiguous set of resource blocks (RBs) within the wider total carrier bandwidth, with specific parameters like numerology, subcarrier spacing, RB size width, or the like. The above information is presented as background information only to assist with an understanding of the disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the disclosure. SUMMARY Aspects of the disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the disclosure is to provide a system and method for managing a plurality of bandwidth parts (BWPs) in a wireless communication system. Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments. In accordance with an aspect of the disclosure, a method performed by a base station in a wireless communication system is provided. The method includes identifying at least one of a plurality of BWP level metrics and a plurality of user equipment (UE) level metrics for each of the plurality of BWPs for a current time window in the corresponding BWP among the plurality of BWPs, determining a BWP assignment policy based on the identified at least one of the plurality of BWP level metrics and the plurality of UE level metrics, assigning and assigning for a second time window after the first time window, each of a plurality of UEs to each of the BWPs based on the determined BWP assignment policy. In accordance with another aspect of the disclosure, a base station is provided. The base station includes memory, including one or more storage media, storing instructions, and at least one processor communicatively coupled to the memory, wherein the instructions, when executed by the at least one processor individually or collectively, cause the base station to identify at least one of a plurality of BWP level metrics and a plurality of UE level metrics for each of the plurality of BWPs for a first time window in corresponding BWP from among the plurality of BWPs, determine a BWP assignment policy based on the identified at least one of the plurality of BWP level metrics and the plurality of UE level metrics, assign, for a second time window after the first time window, each of a plurality of UEs to each of the BWPs based on the determined BWP assignment policy. In accordance with another aspect