摘要:
A wireless communication system according to the present invention includes a first base station forming a unicast area and a second base station forming a multicast area. The first base station is provided with a load status reporting unit for reporting the load status of the unicast area of the first base station to the second base station forming the multicast area within a certain distance from the unicast area of the first base station. The second base station is provided with a transmission power controlling unit for controlling, based on the reported load status of the unicast area, the transmission power of a signal transmitted in the multicast area of the second base station.
摘要:
A wireless base station (100) calculates a first transmission rate when performing transmission to a wireless terminal with communication path quality by a first transmission power in a first candidate band selected as a candidate from first wireless bands including a neighboring priority band, calculates a second transmission rate when performing transmission to the wireless terminal (200) with the communication path quality by a second transmission power in a second candidate band selected as a candidate from second wireless bands that do not include the neighboring priority band, and sets, out of a first wireless resource including the first transmission power and the first candidate band and a second wireless resource including the second transmission power and the second candidate band, a wireless resource for a higher transmission rate obtained by the calculation as a wireless resource allocatable to the wireless terminal (200). It is therefore possible to maximize the throughput of the wireless terminal existing in the local station communication area while implementing suppression of interference to the neighboring cell.
摘要:
There is provided a mobile communication system that can prevent a situation in which, although there is no occasion to receive packets for a mobile station, the reception processing is continued and useless power is undesirably consumed. The mobile communication system includes a base station that repeats a transmission period and a transmission halt period with a constant control cycle, and mobile station that repeats a reception period and a reception halt period with a constant control cycle (antenna, duplexer, reception unit, user data separation unit, packet transmission determination unit, reception period determination unit, packet reception determination unit, and signal synthesis unit). The mobile station alternately repeats the reception period and reception halt period, sends the reception result to the base station, and starts the reception period according to the start of the transmission period of the base station to receive packets. In case all the packets cannot be correctly received during the reception period, the reception period is extended by a predetermined period in the control cycle. Furthermore, in case all the packets can be correctly received during the reception period, the mobile station transfers to the reception halt period to halt the reception.
摘要:
A multiuser interference elimination apparatus in which, even in the second and other subsequent stages, adaptive updating of antenna weights can be performed and antenna weights can be generated with accuracy by using interference-canceled received signals. A multiplier performs gain correction by multiplying a symbol replica transmitted from the preceding stage by a coefficient [1−(1−α)m−1], and an antenna signal regeneration section converts the gain-corrected symbol replica into antenna signals. Adders add the antenna signals converted by the antenna signal regeneration section to outputs from despread devices and output the addition results to an antenna weight adaptive updating section. The antenna weight adaptive updating section performs adaptive updating of antenna weights by using the addition results.
摘要:
A manufacturing method for a resin formed element capable of exhibiting an advanced design quality while reducing the manufacturing cost is provided. The method comprises the steps of printing a pattern on a reverse side of a thermoplastic film to form a printed pattern layer, printing and curing an ultraviolet curable or thermosetting resin in part of the surface of the thermoplastic film to form an ultraviolet cured or thermoset resin layer, burying this ultraviolet cured or thermoset resin layer in the thermoplastic film, and forming a resin base material from the printed pattern layer side of the laminated element to adhere and integrate, so as to produce a difference in distance from the surface between the region corresponding to the ultraviolet cured or thermoset resin layer of the printed pattern layer and other region, and finally peeling the ultraviolet cured or thermoset resin layer from the thermoplastic film.
摘要:
A decorative sheet including a pattern with a third-dimensional appearance is provided. The decorative sheet has a reflective layer for reflecting incident light. On the reflective layer, a transparent layer is formed. On the transparent layer, a light shielding layer for shielding incident light is formed. A pattern layer is interposed between the light shielding layer and the reflective layer in such a manner, for example, that it is included in the rear surface of the light shielding layer or in the transparent layer. The light shielding layer is provided with a plurality of through holes for passing incident light toward the reflective layer and emission light which leads out a pattern image reflected in the reflective layer.
摘要:
A sheet-shaped sensor body includes a first protective layer formed of a resist paste layer, an antenna film formed of a PET film, a first conductive layer formed of a silver layer, a second conductive layer formed of a carbon layer, a second protective layer formed of a resist paste layer and a hot-melt film, which are laminated one on another in sequence. When the hot-melt film of the sensor body is brought into abutment against a front surface of a wadding previously adhered to a pad of a seat back and is then heat-pressed, the sensor body is fixed firmly and reliably to the wadding by an adhesive force generated by the melted hot-melt film once it again cools and solidified. Thus, the sensor of an occupant detecting system for detecting the physical constitution and the attitude of an occupant sitting on a seat can be fixed easily and reliably to the seat back.