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1. WO2014064322 - INTERFERENCE AVOIDANCE AND POWER SAVINGS FOR COEXISTENCE AMONG DIFFERENT RADIO ACCESS TECHNOLOGIES

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Publication Number WO/2014/064322
Publication Date 01.05.2014
International Application No. PCT/FI2012/051008
International Filing Date 22.10.2012
IPC
H04W 72/04 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
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
H04W 16/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
16Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
14Spectrum sharing arrangements ; between different networks
H04W 72/082
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
04Wireless resource allocation
08where an allocation plan is defined; based on quality criteria
082using the level of interference
H04W 84/12
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
84Network topologies
02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
10Small scale networks; Flat hierarchical networks
12WLAN [Wireless Local Area Networks]
Y02D 30/70
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
30Reducing energy consumption in communication networks
70in wireless communication networks
Applicants
  • NOKIA TECHNOLOGIES OY [FI]/[FI]
Inventors
  • JUNIOR, Fuad
  • ALMEIDA, Erika
  • DOMINGOS, Robson
  • PAIVA, Rafael
  • CHAVES, Fabiano
  • CAVALCANTE, Andre
  • COSTA, Felipe
  • CHOUDHURY, sayantan
Agents
  • NOKIA TECHNOLOGIES OY
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) INTERFERENCE AVOIDANCE AND POWER SAVINGS FOR COEXISTENCE AMONG DIFFERENT RADIO ACCESS TECHNOLOGIES
(FR) ÉVITEMENT DE BROUILLAGE ET ÉCONOMIES D'ÉNERGIE POUR UNE COEXISTENCE PARMI DIFFÉRENTES TECHNOLOGIES D'ACCÈS RADIO
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Abstract
(EN)
A network operating in a 1st radio access technology RAT (e.g., Wi-Fi) can avoid interference to/from another network operating in a 2nd RAT (e.g., LTE) by detecting within a predefined interval, of a resource allocation of the coexisting 2nd RAT, whether the resource allocation (e.g., one subframe) is occupied or vacant. Only when the resource allocation was detected to be vacant, then transmissions according to the 1st RAT are restricted to occur within boundaries of the resource allocation of the coexisting 2nd RAT that was determined to be vacant. When the resource allocation was detected to be occupied, nodes in the 2nd RAT can enter a sleep mode for power savings. The nodes can compare an energy level sensed during the predefined interval against a predefined threshold for the detecting. All of these procedures can be independent of cooperation with any network node operating in the coexisting 2nd RAT.
(FR)
Selon la présente invention, un réseau fonctionnant dans une première technologie d'accès radio RAT (par exemple, WiFi) peut éviter un brouillage vers/depuis un autre réseau fonctionnant dans une 2nde RAT (par exemple, LTE) par détection à l'intérieur d'un intervalle prédéfini, d'une affectation de ressources de la 2nde RAT coexistante, si l'affectation de ressources (par exemple, une sous-trame) est occupée ou vacante. Seulement lorsque l'affectation de ressources a été détectée comme vacante, des émissions selon la 1ère RAT sont restreintes pour se produire à l'intérieur de frontières de l'affectation de ressources de la 2nde RAT coexistante qui a été déterminée comme vacante. Lorsque l'affectation de ressources a été détectée comme occupée, des nœuds dans la 2nde RAT peuvent entrer dans un mode de sommeil pour des économies d'énergie. Les nœuds peuvent comparer un niveau d'énergie détecté durant l'intervalle prédéfini à un seuil prédéfini pour la détection. Toutes ces procédures peuvent être indépendantes d'une coopération avec n'importe quel nœud de réseau fonctionnant dans la 2nde RAT coexistante.
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