摘要:
A packet communication system etc., is proposed, which can automatically adjusting the antenna directionality without modifying a wireless interface of a wireless packet forwarding device even if it involves fluctuation in the packet transmission timing due to CSMA/CA etc. An interference evasion unit involves fluctuation in packet transmission timing due to CSMA/CA. A radio emission device can control the emissive direction and/or emission intensity. A packet generation unit adjusts packet features other than its contents (e.g., packet length, transmission intensity) based on a switching sequence for specifying the emissive direction and/or emissive intensity, and generate a switching control packet. An emission control unit measures the switching control packet feature other than its contents, and identifies at least one bit as antenna control information. The emission control unit controls the overall directionality of a directional antenna unit based on a bit sequence including at least one bit thus identified.
摘要:
A packet communication system etc., is proposed, which can automatically adjusting the antenna directionality without modifying a wireless interface of a wireless packet forwarding device even if it involves fluctuation in the packet transmission timing due to CSMA/CA etc. An interference evasion unit involves fluctuation in packet transmission timing due to CSMA/CA. A radio emission device can control the emissive direction and/or emission intensity. A packet generation unit adjusts packet features other than its contents (e.g., packet length, transmission intensity) based on a switching sequence for specifying the emissive direction and/or emissive intensity, and generate a switching control packet. An emission control unit measures the switching control packet feature other than its contents, and identifies at least one bit as antenna control information. The emission control unit controls the overall directionality of a directional antenna unit based on a bit sequence including at least one bit thus identified.
摘要:
A control packet is broadcast over a route, containing first and second metric values of different transmission characteristics of the route. At a local node, control packets from multiple nodes are received and examined for their source. If the packets are received from upstream nodes, the metrics of the received packets are updated, the second metric is weighted and summed with the first metric to produce a number of combined metrics and a minimum value of the combined metrics is detected. One of the routes having the detected value is selected as a route to an upstream node. If the control packets are received from downstream nodes, the second metric is weighted and summed with the first metric to produce a number of combined metrics and a smaller values of combined metrics are detected corresponding in number to usable antennas and routes of the detected values are selected.
摘要:
An image forming apparatus, including: an image forming unit to perform an image formation on paper; a storage unit to store a printing rate coefficient corresponding to one of printing rate levels, the printing rate levels being a plurality of levels into which a printing rate is divided, the printing rate coefficient being stored for each of the printing rate levels; a coefficient changing operation section for changing a printing rate coefficient for each of the printing rate levels; and a control unit to calculate a printing rate on each page of the paper on which the image formation is performed, to read a printing rate coefficient, corresponding to one of the printing rate levels to which the calculated printing rate belongs, from the storage unit, and to add up the read printing rate coefficient as a count coefficient.
摘要:
A transmission power control technique allowing stable and reliable signal transmission in soft handover is disclosed. Each of the base stations involved in soft handover measures an amount of loss of the base station selection signal. When the amount of loss of the base station selection signal exceeds a threshold, the transmission power of the downlink signal is not set to the minimum level but to the normally controlled level. Further, a transmission power update timing of each base station is determined so that the downlink signal received at the mobile station changes in transmission power at a predetermined timing synchronized with that of other base stations.
摘要:
A transmission power control technique allowing stable and reliable signal transmission in soft handover is disclosed. Each of the base stations involved in soft handover measures an amount of loss of the base station selection signal. When the amount of loss of the base station selection signal exceeds a threshold, the transmission power of the downlink signal is not set to the minimum level but to the normally controlled level. Further, a transmission power update timing of each base station is determined so that the downlink signal received at the mobile station changes in transmission power at a predetermined timing synchronized with that of other base stations.
摘要:
A method of subjecting a silicon wafer doped with boron to a heat treatment in an argon atmosphere, wherein the argon atmosphere is replaced with a hydrogen atmosphere or a mixed gas of an argon gas and a hydrogen gas in a proper fashion, to thereby uniformize a boron concentration in the thickness direction of the surface layer of the silicon wafer doped with boron.
摘要:
There is provided a semiconductor integrated circuit including: a plurality of first logic blocks which are reconfigurable, the plurality of first logic blocks inputting data of a first bit width and performing computation; a first network connecting the plurality of first logic blocks in a dynamically reconfigurable manner; a plurality of second logic blocks inputting data of a second bit width different from the first bit width and performing computation; a second network connected to outputs of the plurality of second logic blocks; and a third network connecting a carry bit output of a computing unit included in the first logic block to an input of a computing unit included in the second logic block in a dynamically reconfigurable manner.
摘要:
An object of the invention is to obtain a high-speed and high-accuracy radio-wave propagation characteristic forecasting system in combination with the launching method by correctly estimating a diffraction phenomenon when a ray passes the vicinity of an edge of a structure. To estimate a radio-wave propagation characteristic in accordance with the ray launching method, when a ray passes the vicinity of an edge of a structure, a diffracted wave is generated at the edge if the distance between the edge and the ray is smaller than the radius of a ray spread. Thereby, it is easy to combine the ray launching method with the conventional ray launching method and it is possible to estimate a high-speed high-accuracy radio-wave propagation characteristic also considering a ray diffracted wave.
摘要:
A tool for an optical connector including a clamping portion for clamping an optical fiber between clamping elements, the tool including: first and second insertion members, respectively including separately extractable first and second distal ends, wherein the first and second distal ends maintain the clamping elements in an open state by being wedged therebetween from outside the clamping portion, so that the optical fiber is movable between the clamping elements; first and second insertion member operating portions, respectively separately connected to proximal ends of the first and second insertion members, that individually extract the first and second distal ends of the first and second insertion members from between the clamping elements; and a stopper portion against which the optical connector is pressed when the first and second insertion members are extracted from between the clamping elements.