56 results about "Mobile cellular communications" patented technology

A cellular system comprising at least one moving non-stationary base station for enabling cellular communication between at least two mobile stations in a geographic area that lacks adequate cellular coverage by at least one stationary base station.

Provided is a mobile cellular communication system or, more particularly, a transmission diversity communication system in which when the number of transmitting antennas is increased, antennas can be calibrated readily and efficiently with power saved without degradation of the characteristic concerning fading. The transmission diversity communication system is a closed-loop transmission diversity communication system. In the transmission diversity communication system, a base station transmits common pilot signals via a plurality of antennas, and a mobile station receives the common pilot signals. The mobile station transmits feedback signals, which are produced through analysis of the common pilot signals, to the base station. The base station controls a downward transmission signal on the basis of the pieces of feedback information. Herein, the plurality of antennas is divided into a plurality of groups. The common pilot signal is transmitted via a reference antenna included in each of the groups. The common pilot signal is alternately transmitted at a low frequency via the other antennas.

A cellular communications system may include a plurality of mobile cellular communications devices each associated with a respective user, and at least one cellular base station for wirelessly communicating with the mobile cellular communications devices. The at least one cellular base station may have a capacity associated therewith. The system may also include a central station for determining available capacity of the at least one cellular base station based upon active wireless communications with the mobile cellular communications devices. Moreover, the system may also include a subscription server for cooperating with the central station to provide non-real time subscription data to users on respective mobile cellular communications devices via the at least one cellular base station when the determined available capacity thereof is greater than a threshold.

A common communication terminal system and method of converging mobile cellular communications, wireless access systems, wireless local area network and wireline communications into one Open Wireless Architecture (OWA) platform supporting cost-effective and spectrum-efficient broadband services across wireless and wired communication environment in one single terminal device with one unified telephone number for office, home and mobile communications.

A moving cellular communication system comprising at least one upgraded moving relay including at least two base station functionalities and at least one mobile station functionality and a relay resource manager, all co-located, wherein each base station functionality of the upgraded moving relay is operative to communicate via antennae with at least one mobile station thereby to define a first radio link therebetween, and wherein each base station functionality has a connection to its relay resource manager, wherein each mobile station functionality of the upgraded moving relay communicates via antennae with a unit which has base station functionality thereby to define at least one second radio link, respectively, wherein the relay resource manager in each individual moving relay comprises a radio resource manager; and functionality for exchanging information with relay resource managers is included in moving relays other than the individual moving relay.

To achieve an efficient and flexible routing of signaling messages between a core network and an access network in a mobile communication cellular network, it is proposed to provide a pool of mobile switching apparatuses between the core network and the access network. Each mobile switching apparatus in the pool (10) comprises a signaling unit (32) adapted to issue a paging message to the access network for connection establishment to a mobile terminal. Further, according to the present invention it is proposed to provide each mobile switching apparatus in the pool (10) with a relay unit (28) adapted to receive a paging response from the access network. Further, the relay unit (28) is adapted to determine a mobile switching apparatus in the pool (10) of mobile switching apparatuses handling the paging response.

A cellular communications system may include one or more cellular base stations and a plurality of mobile cellular communications devices for communicating therewith. More particularly, the cellular base station and the mobile cellular communications devices may each include an encoder for generating an information signal. Furthermore, a modulator may generate a modulated waveform based upon the information signal, a carrier signal having a frequency and phase associated therewith, and at least one carrier phase reference symbol. The modulator may also include an offset circuit so that the modulated waveform includes a carrier frequency indicator. A transmitter may also be included for transmitting the modulated waveform to the desired cellular base station or mobile cellular communications device.

A cellular communications system may include at least one base station selectively denying attempts to establish wireless communications links therewith, and wirelessly transmitting denial messages for denied attempts. The system may further include at least one mobile cellular communications device including a wireless transceiver and a controller cooperating therewith for attempting to establish a wireless communications link with the at least one base station having a quality of service (QoS) level associated therewith. If a denial message is received, the controller continues to attempt to establish the wireless communications link at a first attempt rate. Yet, if the wireless communications link cannot be established with the desired QoS level, and if no denial message is received, then the controller continues to attempt to establish the wireless communications link at a second attempt rate different than the first attempt rate.

A method for generating Latin square family sequence includes obtaining expansion Latin square family matrix with multiple column expansion Latin square family sequence by carrying out expansion on Latin square family matrix generated according to set prime number and parameter, furthermore realizing frequency hopping communication control on frequency hopping point number being nonprime number according said expansion Latin square family sequence when frequency hopping point number is non-prime number.

The invention provides a floating car information collection and optimization method based on active information reporting. The floating car information collection and optimization method includes a tenth step of using a car-mounted terminal to obtain the real-time information of speed, direction and time of a floating car, a twentieth step of using the car-mounted terminal to calculate the variable quantity of speed and direction information of the car within a sampling cycle, if one variable quantity exceeds a preset threshold value of a system, the car-mounted terminal can be triggered to collect current car driving data information, if not, the car-mounted terminal can prolong the sampling cycle, and a thirtieth step of using the car-mounted terminal to upload the collected car driving data information to a data center through mobile cellular communication technology. Through the car-mounted terminal with different sampling cycles, the driving data information of the floating car is collected and actively uploaded, collection accuracy of the driving data information of the floating car is improved, and the communication cost is reduced at the same time.

A device and method include detecting signal strength received at a mobile cellular communication device. A dropped call is detected between the device and another device as a function of detected signal strength. The dropped call is reconnected when detected signal strength reaches a selected first threshold.

The invention provides a base station and user combined transmission method of a multi-antenna system based on a network code, comprising the following steps that a base station successively performs network coding and transmission on broadcasting information and received sending information of each user to realize combined transmission of the base station and a user; each user firstly sends information to decode the network codes of the received sending information and the base station broadcasting information to obtain the base station broadcasting information; and then the base station broadcasting information is used for decoding sending information of other users and network code information of the base station broadcasting information to obtain sending information of the other users, so as to guarantee that user decoding is accurate. According to the base station and user combined transmission method, the base station is used for respectively carrying out the network coding on the base station broadcasting information and the sending information of each user, so as to realize the combined transmission of two types of information of the user and the base station; an antenna resource is saved and the spectrum effectiveness is improved; and the problem that the spectrum effectiveness of a mobile honeycomb communication system is low is practically solved. The base station and each user code the sending information in advance so as to guarantee reliable transmission and flexible utilization.

The invention provides a method for collecting public traffic congestion status information in real time. The method comprises the following steps: firstly, a public bus provided with a vehicle-mounted information terminal collects the public number, time of pressing the key for reminding congestion and the position and the like at regular intervals in the running process of the public bus, and sends the information to a public traffic data service center through techniques such as mobile cellular communication and the like; then, the public traffic data service center judges whether the public traffic is congested at each position according to the corresponding information of time of pressing the key for reminding congestion in the data information uploaded by the public bus so as to obtain a real-time public traffic congestion status information set, and obtains corresponding public traffic information sequences by being combined with the public bus number and public bus position corresponding to the subset of the real-time public traffic congestion status information set; and finally, the public traffic data service center stores the obtained public traffic information sequences into the database of the public traffic data service center, so as to complete the collection of the information of the public traffic congestion status information in real time. In the invention, the method for collecting the public traffic congestion status information with low cost is realized.

A method of using a plurality of apparatus, systems, computer application software and communication protocols to create a state that detects and disables the functions of text messaging or voice communication of handheld mobile cellular devices while operating moving vehicle in the form of one and collectively automobile, aircraft, watercraft and locomotive.

In broad embodiment, the present invention detects and disables text messaging function of handheld communication device used by an operator of a moving vehicle.

The present invention is subject to many variations, modifications and changes in detail. It is intended that all matter described throughout the specification and shown in the accompanying drawings be considered illustrative only. Accordingly, it is intended that the invention be limited only by the spirit and scope of the invention as claimed.

The present invention provides an audit method for a monitoring event of a commercial vehicle. A floating car periodically acquires information such as position, velocity, time and driving behavior during a driving process, and transmits the information to a data center through a cellular mobile communication technology; the data center processes the above data, and generates a photographing instruction; a floating car terminal performs the photographing instruction, and transmits data containing photo information to the data center; and the data center stores corresponding data to a floating car traveling monitoring information base. The invention improves the capability on monitoring anomalous events of the commercial vehicle, as well as the efficiency of auditing the monitoring events.

The invention relates to a dynamic channel assignment (DCA) method for a large-scale mobile cellular communications system, belonging to the technical field of mobile communication. In the method, a large-dimension cellular net is divided into a plurality of small-dimension cellular subnets (DCSs), and each cellular subnet is provided with an independent cellular subnet control center; and meanwhile, each cellular subnet is provided with a real-time interference channel table. Compared with the traditional DCA method, the DCA method provided by the invention has the advantages that the huge DCA calculated amount of the whole large-dimensional cellular net is shared by each cellular subnet, thus, within unit time, times for each cellular subnet to operate a DCA program can be greatly reduced; and the control center of each cellular subnet can not be overloaded. Meanwhile, because the channel reassignment times can be greatly reduced, the signalling cost of the whole cellular net can be also greatly lowered, the communication link delay is reduced, and the real-time requirement of mobile user communication is guaranteed.