US 11,943,659 B2
Method and terminal for accessing access point in wireless communication system
Mingyu Lee, Gyeonggi-do (KR); Hyunseob Oh, Seoul (KR); and Whasook Jeon, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd, (KR); and Seoul National University R&DB Foundation, (KR)
Appl. No. 16/979,709
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR); and Seoul National University R&DB Foundation, Seoul (KR)
PCT Filed Jun. 19, 2019, PCT No. PCT/KR2019/007411
§ 371(c)(1), (2) Date Sep. 10, 2020,
PCT Pub. No. WO2020/004862, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 10-2018-0074183 (KR), filed on Jun. 27, 2018.
Prior Publication US 2021/0045012 A1, Feb. 11, 2021
Int. Cl. H04W 28/082 (2023.01); H04B 17/318 (2015.01); H04B 17/336 (2015.01); H04W 24/10 (2009.01)
CPC H04W 28/082 (2023.05) [H04B 17/318 (2015.01); H04B 17/336 (2015.01); H04W 24/10 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method, performed by a terminal, of accessing an access point (AP) in a wireless communication system, the method comprising:
receiving a beacon frame comprising first load information of an accessed AP per radio channel unit;
determining whether to maintain an accessed radio channel of the accessed AP, based on the first load information;
receiving a beacon frame comprising second load information of an AP near the terminal in case that it is determined not to maintain the accessed radio channel;
determining a radio channel to be accessed, based on the second load information and channel interference information; and
accessing the determined radio channel,
wherein radio channel to be accessed is determined by:
measuring a received signal strength indicator (RSSI) of a signal received from the AP near the terminal,
determining whether channel interference of the AP near the terminal occurs, based on the measured RSSI and an adjacent channel power leakage ratio having a pre-determined value according to a channel distance,
obtaining a sum of channel load quantities of channels interfering with the radio channel of the accessed AP in case that the channel interference of the AP near the terminal occurs,
obtaining a weight value based on the sum of the channel load quantities and a channel load quantity of the radio channel to be accessed, wherein the weight value is inversely proportional to the sum of the channel load quantities,
obtaining an expected value of an average spectral efficiency of the radio channel to be accessed, based on the average spectral efficiency of the radio channel to be accessed, and
obtaining a resource efficiency of the radio channel to be accessed based on the weight value and the expected value of the average spectral efficiency.