Browsing by Author "Ko Chun-Hsien"

Now showing 1 - 6 of 6

ACCESS POINT AND COMMUNICATION SYSTEM FOR RESOURCE ALLOCATION
(2015-02-26)
Wu Sau-Hsuan
;
Chao Hsi-Lu
;
Ko Chun-Hsien
An access point (AP) and a communication system are provided. The access point comprises at least but not limited to a transceiver, a network connection unit, and a processing circuit. The processing circuit is configured for the following steps. The AP receives channel access requests of the user equipments (UEs) from the UEs. Next, the AP transmits a channel request data according to QoS requirements of plurality of channel access requests of the UEs to the server. Afterward, the AP receives resource allocation information associated with the channel request data from the server, wherein the resource allocation information comprises an allocated result of physical channels and transmission power configurations. Subsequently, the AP allocates the physical channels to the UEs according to the QoS requirements of the channel access requests of the UEs and the resource allocation information.
COGNITIVE RADIO COMMUNICATION SYSTEM AND OPERATING METHOD THEREOF
(2014-08-28)
WU Sau-Hsuan
;
Chao Hsi-Lu
;
Ko Chun-Hsien
;
Mo Shang-Ru
;
Jiang Chang-Ting
A cognitive radio communication network is provided. The cognitive radio communication network includes a cloud and a wireless communication network.A communication system accessing to a backbone network is provided. The communication system includes a cloud and a wireless communication network connected to the cloud, and having a plurality of cognitive radio access points and a plurality of users, wherein the cloud performs the functions of network management, power control, and radio resource management.
Cognitive radio communication system and operating method thereof
(2015-01-06)
Wu Sau-Hsuan
;
Chao Hsi-Lu
;
Ko Chun-Hsien
;
Mo Shang-Ru
;
Jiang Chang-Ting
A cognitive radio communication network is provided. The cognitive radio communication network includes a cloud and a wireless communication network.A communication system accessing to a backbone network is provided. The communication system includes a cloud and a wireless communication network connected to the cloud, and having a plurality of cognitive radio access points and a plurality of users, wherein the cloud performs the functions of network management, power control, and radio resource management.
Cooperative spectrum sensing method and system for locationing primary transmitters in a cognitive radio system
(2014-12-09)
Wu Sau-Hsuan
;
Huang Din-Hwa
;
Ko Chun-Hsien
In a cooperative spectrum sensing method and system for locationing primary transmitters, each of secondary users transmits to a corresponding one of cognitive radio (CR) base station location information thereof and a received signal strength indicator (RSSI) value generated thereby in response to sensing power signals from the primary transmitters. The CR base stations transmit the location information and the RDDI values of the secondary users to a data fusion center such that the data fusion center obtains the number and locations of the primary transmitters based on the location information and the RSSI values received thereby using a learning algorithm to thereby reconstruct a power propagation map of the primary transmitters.
COOPERATIVE SPECTRUM SENSING METHOD AND SYSTEM FOR LOCATIONING PRIMARY TRANSMITTERS IN A COGNITIVE RADIO SYSTEM
(2012-12-06)
Wu Sau-Hsuan
;
Huang Din-Hwa
;
Ko Chun-Hsien
In a cooperative spectrum sensing method and system for locationing primary transmitters, each of secondary users transmits to a corresponding one of cognitive radio (CR) base station location information thereof and a received signal strength indicator (RSSI) value generated thereby in response to sensing power signals from the primary transmitters. The CR base stations transmit the location information and the RDDI values of the secondary users to a data fusion center such that the data fusion center obtains the number and locations of the primary transmitters based on the location information and the RSSI values received thereby using a learning algorithm to thereby reconstruct a power propagation map of the primary transmitters.
RESOURCE ALLOCATION SERVER AND COMMUNICATION SYSTEM
(2015-02-26)
Wu Sau-Hsuan
;
Chao Hsi-Lu
;
Ko Chun-Hsien
A resource allocation server and a communication system are provided. The server receives location data of the access points (APs) and channel request data of the APs corresponding to the location data of the APs. The server groups the channel request data of the APs into clusters according to available physical channels of the APs and the channel request data of the APs. The server allocates the available physical channels of the APs for the channel request data of the APs and transmission power configurations on each of the allocated physical channels of the APs according to the channel request data and the location data of the APs in each of the clusters. The server transmits allocated results of the allocated physical channels of the APs for the channel request data of the APs and the transmission power configurations on each of the allocated physical channels of the APs.