Abstract:
A coexistence system for integrating heterogeneous wireless network devices, which use an identical frequency band, into a single board and an operation method thereof are provided to increase the throughput, reduce the frequency of retransmission, and minimize the power consumption by enabling an IEEE 802.11 WLAN and an IEEE 802.15.4 LR-WPAN to successfully execute their respective communication without any collision even though an identical frequency band is used. A coexistence system for integrating heterogeneous wireless network devices, which use an identical frequency band, into a single board comprises the first wireless network equipment(30), a synchronization unit(20), and the second wireless network equipment(10). The first wireless network equipment(30), or an IEEE 802.15.4 LR-WPAN, generates an interrupt to make a request for active channel reservation. The synchronization unit(20), such as ACROS(Active Channel Reservation for cOexiStence) software, forwards a channel reservation request interrupt in order to synchronize the time information between the first wireless network equipment(30) and the second wireless network equipment(10) which uses the same frequency band as the first wireless network equipment(30). The second wireless network equipment(10), or an IEEE 802.11 WLAN, reserves a radio channel through an RTS(Request To Send)/CTS(Clear To Send) switching scheme according to the channel reservation request interrupt. The second wireless network equipment(10), inactivated during the reservation period, helps the first wireless network equipment(30) to use the radio channel without interference.
Abstract:
본 발명은 DNA 가닥의 녹는점을 이용하여 DNA 컴퓨팅에서 필요한 실수 정보를 DNA 가닥에 인코딩하는 방법과, 이를 이용하여 그래프 문제를 해결하는 방법에 관한 것으로, 더욱 상세하게는, PCR 수행시 낮은 변성온도에서는 녹는점이 낮은 DNA 가닥이 상대적으로 더 많이 증폭된다는 사실에 기초하여, 녹는점의 차이를 이용해서 실수를 표현한 후 해당 녹는점을 가지는 DNA를 제작하고, PCR의 변성온도를 높은 것에서부터 시작하여 각 주기마다 서서히 낮추면서 PCR을 수행함으로써, 또는 그 반대로 낮은 변성 온도로부터 시작하여 각 주기마다 서서히 올려주면서 PCR을 수행함으로써, 필요한 DNA, 즉 큰 실수나 작은 실수를 표현하는 DNA를 상대적으로 더 많이 증폭시켜, 가중치가 있는 그래프문제를 해결할 수 있는 DNA 컴퓨팅 방법에 관한 것인데, 이는 녹는점이 관� �된 대부분의 구현 단계에 활용될 수 있고 해를 효율적으로 찾을 수 있다는 특징을 가진다.
Abstract:
A wireless channel coexisting system of a WLAN and a WPAN through wireless channel reservation and a method thereof are provided to remove collision caused by different communication methods, effectively improve data processing, and effectively reduce power consumption by reducing the number of times of re-transmission according to wireless channel reservation. A WLAN NIC(Network Interface Card)(340) transmits/receives data to/from the first terminal of a WLAN. An LR(Low Rate)-WPAN NIC(350) periodically transmits/receives data to/from the second terminal of a WPAN. A WLAN AP(Access Point) controller(320) controls the WLAN NIC(340), generates a message based on wireless channel reservation time information, and transfers the generated message to the WLAN NIC(340). An LR-WPAN coordinator(330) controls the LR-WPAN NIC(350) and sets a wireless channel reservation time and a data communication repetition period. An active channel reservation unit(310) controls the WLAN AP controller(320) based on the wireless channel reservation time and data communication repetition period received from the LR-WPAN NIC(350).
Abstract:
PURPOSE: A method for representing weighted numbers in DNA strands based on the melting temperature differences for DNA computing and a method for solving weighted graph problems by using the same are provided, thereby effectively applying weighted numbers to DNA strands for DNA computing. CONSTITUTION: A method for representing weighted numbers in DNA strands is characterized by using the melting temperature differences of DNA strands, wherein the melting temperature differences of DNA strands are formed by using GC contents and thermodynamic elements. A method for solving weighted graph problems is characterized by using DNA strands assigned by the weighted numbers, wherein the DNA strands assigned by the weighted numbers is amplified by denaturation temperature gradient PCR.