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1. WO2021030805 - METHODS FOR MITIGATING INTERFERENCE AND MAXIMIZING CAPACITY FOR TIME DIVISION DUPLEX CELLULAR NETWORKS

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Publication Number WO/2021/030805
Publication Date 18.02.2021
International Application No. PCT/US2020/046699
International Filing Date 17.08.2020
IPC
H04L 5/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
H04L 5/14 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
14Two-way operation using the same type of signal, i.e. duplex
H04J 11/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
11Orthogonal multiplex systems
H04B 17/345
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
30of propagation channels
309Measuring or estimating channel quality parameters
345Interference values
H04L 27/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
H04W 72/08 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. selection or allocation of wireless resources or wireless traffic scheduling
04Wireless resource allocation
08based on quality criteria
CPC
H04J 11/005
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
11Orthogonal multiplex systems, ; e.g. using WALSH codes
0023Interference mitigation or co-ordination
005of intercell interference
H04L 5/0023
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
0001Arrangements for dividing the transmission path
0014Three-dimensional division
0023Time-frequency-space
H04L 5/0032
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0032Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
H04L 5/0069
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0058Allocation criteria
0069Allocation based on distance or geographical location
H04L 5/0073
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0058Allocation criteria
0073Allocation arrangements that take into account other cell interferences
H04L 5/0085
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0078Timing of allocation
0085when channel conditions change
Applicants
  • SPECTRUM EFFECT INC. [US]/[US]
Inventors
  • GORMLEY, Eamonn
  • YUN, Jungnam
  • IMMENDORF, Charles
Agents
  • RAUDEBAUGH, Kevin
Priority Data
16/542,22315.08.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHODS FOR MITIGATING INTERFERENCE AND MAXIMIZING CAPACITY FOR TIME DIVISION DUPLEX CELLULAR NETWORKS
(FR) PROCÉDÉS D'ATTÉNUATION D'INTERFÉRENCES ET DE MAXIMISATION DE CAPACITÉ POUR DES RÉSEAUX CELLULAIRES À DUPLEXAGE PAR RÉPARTITION DANS LE TEMPS
front page image
Abstract
(EN)
Time division duplexed (TDD) Cellular networks can experience interference in receive times from downlink transmissions by aggressor cells after network changes, or from tropospheric ducting. The interference from the aggressor cells can be efficiently mitigated by determining that the victim cell is being affected by such interference, identifying the aggressor cells, and selectively increasing the guard time between the aggressor cells and the victim cell.
(FR)
Les réseaux cellulaires à duplexage par répartition dans le temps (TDD) peuvent subir des interférences dans les temps de réception émanant de transmissions de liaison descendante par des cellules agressives après des changements de réseau ou émanant d'un conduit troposphérique. Les interférences émanant des cellules agressives peuvent être atténuées efficacement en déterminant que la cellule victime est affectée par de telles interférences, en identifiant les cellules agressives, et en augmentant sélectivement le temps de garde entre les cellules agressives et la cellule victime.
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