33results about How to "Improve service coverage" patented technology

A method for transmitting data in a direct link setup (DLS) wireless network and an apparatus supporting the method, and a new frame format for the data transmission method are disclosed. A data transmission method of a tunneled direct link setup (TDLS) wireless network, including: transmitting a TDLS relay request message including relay destination station (STA) information; receiving one or more TDLS relay response messages with respect to the TDLS relay request message from one or more STAs; and selecting a relay STA from among the one or more STAs, and transmitting data desired to be transmitted to the relay destination STA, to the relay STA. A service coverage of a basic service set (BSS) can be extended, communication can be performed at low power consumption, and power of stations can be easily managed.

A wireless local area network (WLAN) apparatus for a WLAN system includes a first medium access protocol (MAC) entity which supports a first frequency band; and a second MAC entity which supports a second frequency band, wherein a MAC management frame for the first frequency band is encapsulated in a MAC management frame for the second frequency band, and transmitted through the second frequency band.

A method and apparatus of transmitting a multicast frame in a wireless communication system is provided. The method comprises transmitting a request to send (RTS) frame to stations (STAs) included in a multicast group by using an omni-directional antenna, and receiving a clear to send (CTS) frame transmitted by the STAs included in the multicast group in response to the RTS frame, and transmitting the multicast frame to the STAs included in the multicast group by using a directional antenna.

A method and apparatus of allocating downlink power in a radio access station system are disclosed. The method of allocating transmission power to a plurality of terminals in a radio access station system according to the present invention includes (A-1) calculating an allocation power for the respective terminals based on downlink quality information of the respective terminals; (A-2) calculating a minimum requirement power for the respective terminals based on the downlink quality information; and (A-3) allocating the transmission power by distributing part of excess power of a first terminal group having the allocation power higher than the minimum requirement power to the second terminal group having the allocation power lower than the minimum requirement power, and the part of excess power is a sum of insufficient power of the second terminal group. As a result, the loss of the quantity of service transmission of the radio access station is reduced and service areas can be expanded.

A method of processing a multicast frame in a wireless local area network system. The method includes transmitting a request message for requesting a Directed Multicast Service (DMS) in which at least one multicast frame is transmitted as at least one unicast frame by an Access Point (AP), receiving a response message from the AP in response to the request message, and receiving the at least one multicast frame from the AP, the at least one multicast frame being transmitted as the at least one unicast frame. The request message includes a DMS descriptor list field comprising a Transmission Class (TCLAS) element field and a Transmission Specification (TSPEC) element field. The TCLAS element field includes a requested multicast group address for the DMS. The TSPEC element field defines Quality of Service (QoS) expectations information for the DMS.

Disclosed is a random access method for a machine type communication (MTC) terminal. The random access method performed by a terminal includes performing a cell search, determining a radio environment based on time taken to perform the cell search, and performing different random access procedures depending on the determined radio environment. Accordingly, coverage of the MTC terminal that is in a poor radio environment may be enhanced, thereby performing normal communication with a base station.

The present invention relates to a multiband antenna system and, more particularly, to a multiband antenna system which performs beam tilt while servicing a multiband with a broadband radiating element supporting a multiband. The multiband antenna system according to the present invention comprises: at least one broadband radiating element; a branching filter; and a plurality of phase shifters. The at least one broadband radiating element supports a multiband. The branching filter is connected to each of the at least one broadband radiating element and branches signals per band included in the multiband. The plurality of phase shifters is provided to correspond to the number of the multibands and perform beam tilt for the signals branched per band in accordance with each band. Here, the band means not a band for dividing receipt and transmission in a particular band, but a service band per service provider.

An electronic apparatus and a method thereof are provided. The electronic apparatus includes a signal detection module and a power adjustment module. The signal detection module detects a received signal quality of a first wireless communication system. The power adjustment module is coupled to the signal detection module, and adjusts an output power in a second wireless communication system according to the received signal quality, so as to enlarge service coverage of the electronic apparatus in the second wireless communication system.

The present invention provides a group privacy information discovery method and system, based on the relay server to protect the privacy information, without sacrificing the quality of clustering, through the relay server to perform DP clustering on the information uploaded by users, while protecting Sensitive information uploaded by users. Among them, the clustering operation will be transferred from the user's mobile device to the relay server, allowing the user to go offline after submitting the request, while avoiding iterative calculations and improving computing efficiency. According to the clustering results, the results are further optimized on the premise of meeting the needs of users, and the coverage of services is expanded. The invention can greatly reduce the calculation and communication costs of the user's mobile equipment, and at the same time help the group service provider to save expenses and increase coverage.

The invention discloses a satellite constellation configuration parameter optimization method for regional non-uniform service coverage, and the specific steps of realization are: 1) generating a non-uniform service demand model in the region; 2) generating a service rate model provided by the satellite constellation to the region ; 3) Constructing the service coverage performance function; 4) Establishing a multi-objective optimization model; 5) Optimizing the configuration parameters of the satellite constellation by using the genetic algorithm; 6) Obtaining the optimized configuration parameters of the satellite constellation. The present invention constructs a service coverage performance function according to the service rate of the satellite constellation to cover the target area and the business demand of the area, and considers the deployment cost to establish a multi-objective optimization model, and uses a genetic algorithm to optimize the configuration parameters of the satellite constellation, thereby realizing the maximum coverage of the satellite constellation to the area. The service coverage performance and the minimization of satellite constellation deployment cost can be used for the optimization of satellite constellation configuration parameters.