摘要:
The present invention relates to an elastic foothold for stairs comprising: an upper plate, wherein one or more first coupling protrusions are formed on a side of a bottom surface, one or more first block insertion parts having second coupling protrusions are formed on the other side of the bottom surface, and a first anti-slip part is formed on a side of a top surface; a lower plate, wherein first coupling grooves corresponding to the first coupling protrusions are formed on a side of the bottom surface so as to be male/female-coupled to a side of the upper plate, and one or more second block insertion parts having third coupling protrusions are formed on the other side of the bottom surface; one or more first blocks that are inserted and coupled to the first block insertion parts, that have second coupling grooves formed on a bottom surface so as to be male/female-coupled to the second coupling protrusions, and that have third coupling grooves formed on a top surface; one or more second blocks that are inserted and coupled to the second block insertion parts, that have fourth coupling grooves formed on a bottom surface so as to be male/female-coupled to the third coupling protrusions, and that have fifth coupling grooves formed on a top surface; and one or more first elastic members, wherein both ends are respectively fixed to the fourth coupling grooves and the fifth coupling grooves between the first blocks and the second blocks. According to the present invention, an elastic foothold for stairs that can be fixed to stairs and that minimises shock applied to feet when climbing up and down the stairs so as to be able to prevent harmful effects on joints such as knees of a walker can be provided.
摘要:
An operation control method in a base station of a wireless communication system includes: checking whether or not an allowed mobile station exists in coverage of the base station and overall coverage of base stations adjacent to the base station; and controlling the base station to perform transmission/reception at a predetermined period through a first discontinuous operation, when the allowed mobile station does not exist in the coverage of the base station and the overall coverage of the adjacent base stations.
摘要:
The inventive concept directly relates to device cognition apparatus. The device cognition apparatus according to the inventive concept may include a wireless part forming a main beam and side beams, a transmission signal processing part pointing the main beam at a peripheral device for establishing a communication link, a reception signal processing part receiving reception signal intensities respectively corresponding to the main beam and the side beams from each of a plurality of peripheral devices, and a controller calculating signal differences between the main beam and the side beams based on the received reception signal intensities and selecting the peripheral device for establishing the communication link from the plurality of peripheral devices by the result of the calculation.
摘要:
Provided are a method and apparatus for transmitting control information and packet data. The method includes generating control channels which transmit the control information; generating control indication channel which indicates whether the control channels are transmitted or not; generating data channels in order to transmit the packet data based on the control information; multiplexing the control channels, the control indication channels, and the data channels; and transmitting the control channels, the control indication channels, and the data channels. According to the present invention, when control information and packet data are transmitted in downlink, by transmitting additional information indicating whether control channels are transmitted or not, resources not actually allocated to control channels can be allocated to data channel and the mobile station can receive data channel using the control indication information.
摘要:
An apparatus for making a plurality of terminals have a random access to the reverse common channel system in CDMA, comprises code synchronization detection information broadcast means provided in the base station for broadcasting the state information of a channel card in real time for the terminals to recognize the code synchronization detection when the code synchronization of a certain data is acquired through performing the code synchronization of the preambles transmitted from the terminals through the reverse common channel, and data transmission determination, means provided in the terminals for making the terminals to have attempted data transmission in the same time slot with the data of the code synchronization detection continuously transmit data and the other terminals stop data transmission.