50results about How to "Lower Coverage Costs" patented technology

The method includes steps: (1) network side sets up threshold value of position for mobile station; and informing the set up threshold value of position to mobile station; (2) mobile station monitors and determines whether own position reaches to the threshold value of position in step (1) in real time; when reaching the threshold value of position, mobile station makes report to network side; (3) after receiving report in step (2), network side switches mobile station between adjacent cells. Based on accurate position, the invention makes mobile station switch between adjacent cells.

The invention provides a method and a system for laying of indoor antennas. The method includes confirming an initial value of antenna quantity; obtaining the optimal laying position point scheme of the antennas of current antenna quantity by utilizing the multi-target evolutionary algorithms; and regulating the antennal quantity, obtaining the optimal laying position point scheme of the antennas of different antenna quantity, finding the optimal laying position point scheme having minimum antennal quantity, and obtaining the finial laying scheme of the indoor antennas. The method and the system can reduce achieving complexity of the laying of the indoor antennas, improves a covering effect, and reduces equipment cost.

The invention relates to an agricultural greenhouse and a greenhouse cover material, and concretely relates to a preparation method of high performance polyolefin by using a coating technology and a nano modification technology. The high performance polyolefin coating agricultural film takes high performance polyolefin as a matrix, a functional master batch is added to prepare a base material film, and the agricultural film can be prepared by preciously coating through a coating liquid; the high performance polyolefin coating agricultural film is prepared by processes of preparing the functional master batch, preparing a base material thin film, performing corona treatment, winding the base material film, coating one surface by the coating liquid, drying the coating liquid, cooling and winding, on-line roll change, coating on the other surface by the coating liquid. The flow-dripping period and the service life can reach more than three years, and the agricultural film has the advantages of good heat insulating ability, pesticide resistance property and dirt resistance property.

An antenna device, a wireless cellular network, and a method of capacity expansion are provided. The antenna device includes: a contact element adapted to connect a base station to receive input signals from the base station; an amplitude and phase allocating element adapted to allocate the input signals received by the contact element according to designed amplitudes and phases; an antenna element comprising an array of antennas comprising an even number of columns, and adapted to receive and transmit the input signals allocated with the amplitudes and phases. An array of antennas comprising an even number of columns has been adopted, and a feed network construction of the antenna system has been improved, so that through adjusting amplitudes and phases of original signals from a base station, a smooth capacity expansion of the network can be achieved without adjusting antenna directivities, thus reducing the workload and complexity for capacity expansion.

The present invention discloses a fiber distribution system with the realization of the integration of multiple networks. The system comprises multiple access units, at least one expansion unit which is connected to each of the access units, and at least one remote end unit which is connected to the expansion unit, wherein each of the access units supports multiple communication modes of different operators, in an uplink, each of the remote end units adds a received RF signal emitted by a user to a corresponding communication mode tag and then sends the signal to the expansion unit through a fiber, the expansion unit processes a received optical signal and sends the signal to each of the access units, each of the access units filters the data of an unsupported communication mode, and the filtered signal is converted into an RF signal of a corresponding communication mode, and the RF signal is sent a corresponding signal source.

The invention discloses a multi-channel high-performance wireless access base station device. The device comprises a protective shell, the protective shell is internally provided with a network processor, the network processor is connected with a wireless access module through a data interface, the wireless access module is connected with a gain antenna, and the network processor is connected with a flash memory module, a memory module, an Ethernet interface and a serial interface; a power circuit, a clock circuit, a watchdog circuit and an LED display are all connected with the network processor, wherein the network processor accesses to a mobile server through the Ethernet interface to connect to the Internet, a user accesses to the wireless access module through the gain antenna and further connects to the Internet through the wireless access module, wireless signal coverage in a larger area range is realized, cost of network coverage is relatively low, maintenance is simple and convenient, and the device has the technical effect of multiple channels and high performance.

The invention discloses an optical fiber distribution system realizing multipath access of different-address information sources. The optical fiber distribution system comprises a plurality of access units, at least one expansion unit respectively connected with each access unit, and at least one far-end unit connected with the expansion units, wherein the access units respectively support a plurality of communication standards of different service providers; in a down link, the access units respectively add corresponding communication standard labels to received radiofrequency signals and send the radiofrequency signals to each corresponding expansion unit through an optical fiber; the expansion units respectively carry out data processing on the received down optical signals sent by the plurality of access units supporting different service providers and send the optical signals to the each corresponding far-end unit through optical fibers; and the far-end units respectively process the received optical signals so as to convert the optical signals into radiofrequency signals of the corresponding communication standards, thereby enabling the radiofrequency signals to be sent to users. The invention further provides a communication method of the optical fiber distribution system realizing multipath access of different-address information sources.

The invention relates to a method for wintering and frost protection of vetiver grass in the north. According to the technical scheme, the method includes the following steps that (1), after the outdoor temperature is reduced below zero, cropland is subjected to permeable irrigation once; (2), the vetiver grass is cut till the vetiver grass is 3-10 cm away from the ground, and the rhizomes of thevetiver grass are not damaged; (3), the upper portion and the periphery of the vetiver grass are covered with charcoal, then comprehensive earthing is carried out, and the charcoal is completely covered with earth; (4), on the tenth day after the tomb sweeping day, the earth is removed, the charcoal is left in the cropland, complete watering is carried out once, and germination of the vetiver grass is promoted. The method has the advantages that by means of the method, the wintering survival rate of the vetiver grass can be increased to 95% or above, the wintering survival rate of cultivated seedlings in control treatment is zero, compared with a traditional charcoal material, the vetiver grass is subjected to frost protection treatment in a charcoal mode by means of the method, the biomass is increased to 8 tons per mu from 3 tons per mu after wintering, and the wintering survival rate and the biomass are both remarkably increased.

The invention discloses a wireless communication system realizing access in multiple communication modes. The wireless communication system realizing access in multiple communication modes comprises multiple access units which are sequenced one by one based on the priority, at least an extension unit connected with the access unit with the highest priority, and at least a remote-end unit connected with the extension unit, wherein each access unit supports multiple communication modes of different operators; in a downlink, each access unit forwards received radio frequency signals which are added with a corresponding communication model label and optical signals with a communication mode label sent by the access unit with the priority one level lower to the access unit with the priority one level higher, and the access unit with the highest priority finally converts the received radio frequency signals which are added with the corresponding communication mode label and the optical signals received from the access unit into microwave signals and transmits the microwave signals to each corresponding extension unit; each extension unit after performing data treatment on the received microwave signals transmits the processed microwave signals to each remote-end unit through an optical fiber; each remote-end unit processes received optical signals, converts the optical signals into radio frequency signals in the corresponding communication mode and transmits the radio frequency signals to a user.

The invention discloses a wireless communication system for supporting access of multiple communication systems. The wireless communication system comprises multiple access units, at least one extension unit and at least one remote unit, wherein the at least one extension unit is respectively connected to each access unit; the at least one remote unit is connected with the extension unit; various access units respectively support multiple communication modes of different operators; various remote units respectively support multiple communication systems of different operators; in a down-link, each access unit sends a received radio-frequency signal to each corresponding extension unit through micro-wave after adding a corresponding communication system label into the received radio-frequency signal; each extension unit sends a received micro-wave signal to the remote unit supporting the communication system after processing the received micro-wave signal according to the communication system label in the received micro-wave signal; and the remote unit processes the received optical signal, converts the received optical signal into the radio-frequency signal in the corresponding communication mode, and transmits the radio-frequency signal to users.

The invention discloses a time division duplex (TDD) base station synchronization method based on external reference clock and subframe synchronizing signals. Through incoming of external reference high-precision reference clock and subframe synchronizing signals, all the base stations in a system obtain precise clock and subframe synchronization, therefore covering radiuses of all the base stations are widened, the number of base stations needed in the same coverage area is reduced, network coverage cost is greatly reduced, and meanwhile success rates of switching and reselection of the system are guaranteed.

The invention relates to a remote area service coverage method based on a terrestrial digital television transmission network. The remote area service coverage method comprises the following steps: 1,converging broadcast television program streams, texts, pictures, files and other dynamic data into one transmission stream; 2, transmitting the data to a terrestrial digital television transmittingstation through a terrestrial digital television transmission network; 3, realizing wireless coverage transmission through a terrestrial digital television transmitting station; 4, transmitting the broadcast television program stream to a conventional DTMB receiving end for television playing; for texts, pictures, files and other dynamic data, the mobile intelligent terminal of the user utilizes the service gateway to realize content acquisition. According to the invention, the broadcast television technology is combined with a mobile internet technology, and a terrestrial digital television wireless transmission network of a conventional broadcast television is utilized to present basic culture public service contents including broadcast programs, television programs, texts, pictures, files, data information and the like for farmers and herdsmen on mobile intelligent terminals of the farmers and herdsmen in remote areas.

The invention discloses a novel expanded base station monitoring system and a monitoring method thereof. The system comprises a base station maintenance terminal, aggregation switch units and remote expansion units, wherein one base station maintenance terminal is connected with at least one aggregation switch unit, and the aggregation switch units are connected with at least one remote expansion unit; the base station maintenance terminal is used for judging whether to allow the access of the aggregation switch unit according to the port and the version information of the aggregation switch unit connected with the same; the aggregation switch unit is used for judging whether to allow the access of the remote expansion unit according to the port and the version information of the remote expansion unit connected with the same; and the base station maintenance terminal is further used for generating a system topological structure according to the currently accessed aggregation switch unit and the remote expansion unit. By adopting the novel expanded base station monitoring system disclosed by the invention, coverage on demand is realized, and access nodes are flexibly arranged and controlled to save the coverage cost.

The invention discloses a CDN (Content Delivery Network) coverage scheme adjusting method, device and equipment, and the method comprises the steps: initializing an initial coverage scheme of a CDN; constructing at least two initial populations respectively comprising one initial coverage scheme; newly establishing a process/thread/coroutine for each initial population; in each process/thread/coroutine, based on the goal of reducing the coverage cost, an evolution operation is executed on an initial coverage scheme in one initial population to obtain a filial generation population corresponding to each initial population, and the filial generation population comprises candidate coverage schemes obtained by executing the evolution operation; and selecting a candidate coverage scheme with the lowest coverage cost from all the candidate coverage schemes as a target coverage scheme of the CDN. According to the technical scheme provided by the invention, the coverage cost of the CDN coverage scheme can be saved, and the adjustment difficulty and labor cost of the coverage scheme are reduced.