Abstract: Provided is a resource management system in a communication system including a plurality of systems having no right to use a first frequency band. The resource management system includes: a coexistence manager (CM) configured to manage the plurality of systems for the purpose of coexistence and frequency sharing of the plurality of systems in a frequency band available for the plurality of systems, when the available frequency band is detected in the first frequency band; a coexistence enabler (CE) configured to transmit and receive information of the plurality of systems and information of the CM; and a coexistence discovery and information server (CDIS) configured to support the CM to control the plurality of systems. The CM performs channel classification for the first frequency band based on channel information of the available frequency band, and allocates operating channels to the plurality of systems.

Abstract: The present invention relates to a system and method for managing resources, which involve managing a plurality of frequency resources in a communication system including a plurality of systems having no right to use a first frequency band. The system comprises a coexistence manager (CM) which manages, when a frequency band usable by the plurality of systems is found in the first frequency band, the plurality of systems so as to enable the coexistence of the systems and frequency-sharing among the systems in the usable frequency band; a coexistence enabler (CE) which transceives information of the plurality of systems and information of the coexistence manager; and a coexistence discovery and information server which supports the control of the coexistence manager on the plurality of systems. The plurality of systems uses the usable frequency band by means of coexistence and frequency-sharing according to a reference model.

Abstract: Provided is a method and apparatus for assigning a frequency in an environment where an incumbent system exists. In a frequency environment where the incumbent system exists, a frequency resource management may be smoothly performed using a plurality of frequency sets classified based on a utilization state of each sub-frequency resource. When a frequency sharing system using the same radio access technology (RAT) as a frequency sharing system to be assigned with a frequency resource exists, it is possible to reduce overhead for frequency sharing by priorly assigning a corresponding frequency resource to the frequency sharing system to be assigned with the frequency resource.

Abstract: A system for managing resources in a communication system including a plurality of systems, which do not have a permission for a first frequency band, includes a plurality of coexistence managers configured to, when a frequency band available for the plurality of systems is searched from the first frequency band, manage the plurality of systems for coexistence and frequency sharing of the plurality of systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the plurality of systems and information of the coexistence manager; and a coexistence discovery and information server configured to support control of the coexistence manager over the plurality of systems, wherein predetermined messages are transmitted and received among the coexistence discovery and information server, the plurality of coexistence managers and the coexistence enabler to discover neighbor systems among the plurality of systems.

Abstract: Disclosed is a system for managing resources in a communication system including a plurality of systems not having permission a first frequency band, including: a coexistence manager managing the plurality of systems for coexistence and frequency sharing of the plurality of systems in available frequency bands when the available frequency bands by the plurality of systems are searched in the first frequency band; a coexistence enabler transmitting and receiving information of the plurality of systems and information of the coexistence manager; and a coexistence discovery and information server (CDIS) supporting a control of the coexistence manager for the plurality of systems.

Abstract: Provided are a packet transmission scheduling method in a wireless network and a packet transmission method using the same. The packet transmission scheduling method, includes storing location information and a path loss exponent of each node on a multiplexing path; calculating a Signal-to-Interference and Noise Ratio (SINR) between nodes on a predetermined path based on the stored location information; when the calculated SINR exceeds a threshold, forming the paths as a path table; and scheduling packet transmission based on the formed path table.

Abstract: A system for managing resources in a communication system including systems which do not have a permission for a first frequency band includes a coexistence manager configured to, when a frequency band available for the systems is searched from the first frequency band, manage the systems for coexistence and frequency sharing of the systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the systems and information of the coexistence manager; and a coexistence discovery and information server configured to support control of the coexistence manager over the systems, wherein a plurality of coexistence managers are provided to respectively correspond to the plurality of systems, and wherein, among the plurality of coexistence managers, a first coexistence manager performs a negotiation procedure with coexistence managers neighboring to it, on the basis of one of an etiquette mode, a round-robin mode and a competition mode.

Abstract: A system for managing resources in a communication system including systems, which do not have a permission for a first frequency band, includes coexistence managers configured to, when a frequency band available for the systems is searched from the first frequency band, manage the systems for coexistence and frequency sharing of the systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the systems and information of the coexistence managers; and a coexistence discovery and information server configured to support control of the coexistence managers over the systems, wherein the coexistence managers transmit and receive predetermined messages to and from the coexistence discovery and information server and the coexistence enabler, perform channel classification for the first frequency band, and determine operating channels of the systems on the basis of the channel classification.

Abstract: A system for managing resources in a communication system including systems, which do not have a permission for a first frequency band, includes coexistence managers configured to, when a frequency band available for the systems is searched from the first frequency band, manage the systems for coexistence and frequency sharing of the systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the systems and information of the coexistence managers; and a coexistence discovery and information server configured to support control of the coexistence managers over the systems, wherein predetermined messages are transmitted and received among the coexistence discovery and information server, the coexistence managers and the coexistence enabler to perform a registration procedure, a coexistence information gathering procedure, a coexistence decision making procedure, a reconfiguration procedure, a management procedure and an event procedure, for the coexistence a

Abstract: A system for managing resources in a communication system including systems, which do not have a permission for a first frequency band, includes coexistence managers configured to, when a frequency band available for the systems is searched from the first frequency band, manage the systems for coexistence and frequency sharing of the systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the systems and information of the coexistence managers; and a coexistence discovery and information server configured to support control of the coexistence managers over the systems, wherein the coexistence managers transmit and receive predetermined messages to and from the coexistence discovery and information server and the coexistence enabler, perform channel classification for the first frequency band, and determine operating channels of the systems on the basis of the channel classification.

Abstract: Provided is a method and apparatus for sharing a frequency in an environment where an incumbent system exists. In a frequency environment where the incumbent system exists, a frequency resource management may be smoothly performed using a plurality of frequency sets classified based on a utilization state of each sub-frequency resource. When a frequency sharing system using the same radio access technology (RAT) as a frequency sharing system to be assigned with a frequency resource exists, it is possible to reduce overhead for frequency sharing by priorly assigning a corresponding frequency resource to to the frequency sharing system to be assigned with the frequency resource.

Abstract: An apparatus and method for sharing a frequency are provided. A cognitive wireless communication device having a minimum ROI may be selected from among a plurality of cognitive wireless communication devices, and an idle frequency of a primary system may be allocated to the selected cognitive wireless communication device, thereby increasing an opportunistic utilization efficiency of the idle frequency.

Abstract: The present invention relates to a system and method for managing resources, which involve managing a plurality of frequency resources in a communication system including a plurality of systems having no right to use a first frequency band. The system comprises a coexistence manager (CM) which manages, when a frequency band usable by the plurality of systems is found in the first frequency band, the plurality of systems so as to enable the coexistence of the systems and frequency-sharing among the systems in the usable frequency band; a coexistence enabler (CE) which transceives information of the plurality of systems and information of the coexistence manager; and a coexistence discovery and information server which supports the control of the coexistence manager on the plurality of systems. The plurality of systems uses the usable frequency band by means of coexistence and frequency-sharing according to a reference model.

Abstract: The present invention relates to a system and method for managing resources, which involve managing a plurality of frequency resources in a communication system including a plurality of systems not having rights to use a first frequency band.

Abstract: Provided is a method and apparatus for assigning a frequency in an environment where an incumbent system exists. In a frequency environment where the incumbent system exists, a frequency resource management may be smoothly performed using a plurality of frequency sets classified based on a utilization state of each sub-frequency resource. When a frequency sharing system using the same radio access technology (RAT) as a frequency sharing system to be assigned with a frequency resource exists, it is possible to reduce overhead for frequency sharing by priorly assigning a corresponding frequency resource to the frequency sharing system to be assigned with the frequency resource.

Abstract: A system for managing resources in a communication system including systems which do not have a permission for a first frequency band includes a coexistence manager configured to, when a frequency band available for the systems is searched from the first frequency band, manage the systems for coexistence and frequency sharing of the systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the systems and information of the coexistence manager; and a coexistence discovery and information server configured to support control of the coexistence manager over the systems, wherein a plurality of coexistence managers are provided to respectively correspond to the plurality of systems, and wherein, among the plurality of coexistence managers, a first coexistence manager performs a negotiation procedure with coexistence managers neighboring to it, on the basis of one of an etiquette mode, a round-robin mode and a competition mode.

Abstract: A system for managing resources in a communication system including a plurality of systems, which do not have a permission for a first frequency band, includes a plurality of coexistence managers configured to, when a frequency band available for the plurality of systems is searched from the first frequency band, manage the plurality of systems for coexistence and frequency sharing of the plurality of systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the plurality of systems and information of the coexistence manager; and a coexistence discovery and information server configured to support control of the coexistence manager over the plurality of systems, wherein predetermined messages are transmitted and received among the coexistence discovery and information server, the plurality of coexistence managers and the coexistence enabler to discover neighbor systems among the plurality of systems.

Abstract: A system for managing resources in a communication system including systems, which do not have a permission for a first frequency band, includes coexistence managers configured to, when a frequency band available for the systems is searched from the first frequency band, manage the systems for coexistence and frequency sharing of the systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the systems and information of the coexistence managers; and a coexistence discovery and information server configured to support control of the coexistence managers over the systems, wherein the coexistence managers transmit and receive predetermined messages to and from the coexistence discovery and information server and the coexistence enabler, perform channel classification for the first frequency band, and determine operating channels of the systems on the basis of the channel classification.

Abstract: A system for managing resources in a communication system including systems, which do not have a permission for a first frequency band, includes coexistence managers configured to, when a frequency band available for the systems is searched from the first frequency band, manage the systems for coexistence and frequency sharing of the systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the systems and information of the coexistence managers; and a coexistence discovery and information server configured to support control of the coexistence managers over the systems, wherein predetermined messages are transmitted and received among the coexistence discovery and information server, the coexistence managers and the coexistence enabler to perform a registration procedure, a coexistence information gathering procedure, a coexistence decision making procedure, a reconfiguration procedure, a management procedure and an event procedure, for the coexistence a

Abstract: Provided are a method of adjusting a PCS threshold in a wireless network, and a terminal apparatus for the wireless network. The method and the apparatus determines whether to adjust the PCS threshold to use a shared channel for transmitting data in a wireless network based on a congestion status of the shared channel, and adjusts the PCS threshold based on a packet loss measured for a predetermined period of time.