US 11,968,143 B2
Assignment of physical resource blocks to base stations
Chunhui Liu, Beijing (CN); Anders Landström, Boden (SE); and Qi Zhang, Beijing (CN)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/421,768
Filed by Telefonaktiebolaget LM Ericsson (PUBL), Stockholm (SE)
PCT Filed Jan. 11, 2019, PCT No. PCT/CN2019/071337
§ 371(c)(1), (2) Date Jul. 9, 2021,
PCT Pub. No. WO2020/143021, PCT Pub. Date Jul. 16, 2020.
Prior Publication US 2022/0094498 A1, Mar. 24, 2022
Int. Cl. H04L 5/00 (2006.01); H04B 17/318 (2015.01); H04W 72/541 (2023.01)
CPC H04L 5/0048 (2013.01) [H04B 17/318 (2015.01); H04W 72/541 (2023.01)] 21 Claims
OG exemplary drawing
 
1. A method for assigning physical resource blocks to base stations in a cell deployment for transmission of downlink reference signals, the method being performed by a network node, the method comprising:
obtaining reports from terminal devices in the cell deployment, each report indicating location-wise signal strength measurements of base stations for one of the terminal devices;
determining, based on the obtained reports, whether to group the physical resource blocks in four sets of physical resource blocks or to group the physical resource blocks in less than four sets of physical resource blocks, the determining comprising determining occassionality of inter cell interference for the base stations from the signal strength measurements, and whether to group the physical resource blocks in four sets of physical resource blocks or to group the physical resource blocks in less than four sets of physical resource blocks being determined in accordance with the occassionality of inter cell interference; and
assigning the determined four or less sets of physical resource blocks to the base stations such that no two adjacent cells in the cell deployment are assigned the same set of physical resource blocks for transmission of downlink reference signals.