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292 results about "Mobile broadband" patented technology

Mobile broadband is the marketing term for wireless Internet access through a portable modem, USB wireless modem, or a tablet/smartphone or other mobile device. The first wireless Internet access became available in 1991 as part of the second generation (2G) of mobile phone technology. Higher speeds became available in 2001 and 2006 as part of the third (3G) and fourth (4G) generations. In 2011, 90% of the world's population lived in areas with 2G coverage, while 45% lived in areas with 2G and 3G coverage. Mobile broadband uses the spectrum of 225 MHz to 3700 MHz.

Channel estimation method for reducing pilot number by using compression perception in wideband mobile communication

The invention discloses a signal channel estimating method, which is used for reducing the number of pilot frequencies through compressive sensing in a mobile broadband communicating system, is realized by reducing the required number of pilot frequency symbols in the signal channel estimation of the system as well as on the basis of the principle that the compressive sensing technique can recover sparse signals with less measuring values and the sparse characteristic of the signal channel of the mobile broadband communicating system, and can ensure the signal channel estimation performance of the system. The signal channel estimating method can well solve the defect in the prior art that the sparse characteristic of the signal channel is not considered in the signal channel estimating ways of the prior art and consequently more pilot frequencies consumption is required, and improves the traditional methods as follows: by utilizing the sparse signal channel characteristic, a new signal channel estimating method is designed to reduce the number of pilot frequencies, greatly reduce the energy consumption of the system and ensure effective signal channel estimation. The signal channel estimating method has well popularization and application prospect.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Virtual lead code based random access method of wireless mobile broadband system

InactiveCN101990311AImprove random access success rateReduce random access delayWireless communicationTime delaysRandom access memory
The invention relates to a virtual lead code based random access method of a wireless mobile broadband system. The method comprises the following steps: a base station sets a front lead code virtual resource tank and selects a lead code for a UE (User Equipment) meeting a non-competitive random access scene from a dedicated lead code package or a virtual resource tank; the UE transmits the distributed lead code to the base station in a corresponding random access channel; the base station judges whether the received lead code belongs to the virtual resource tank or not, if so, the corresponding time frequency resource information is distributed for the UE preferentially, and otherwise, ordinary random access flow is used for completing the random access; and the UE distributed with the virtual lead code finishes the random access process by the non-competitive random access flow according to the distributed time frequency resource information. The invention has simple and reliable method, does not need to physically change the base station or change the LTE (Long-Term Evolution) protocol, overcomes the shortage of the traditional non-competitive random access method, improves the random access success rate of the UE and reduces the random access time delay of the UE.
Owner:OCEAN UNIV OF CHINA

Internet of things based personal self-help parking charge management system

An internet of things based personal self-help parking charge management system comprises a mobile terminal, a server, an internet of things parking lock, a server management terminal, system maintenance staff, and park management staff, which interact with one another; the mobile terminal is used for installing APP (application) software and remotely controlling the internet of things parking lock and is connected to a third-party payment platform to allow mobile payment; the server is used for running the APP software in the system; the internet of things parking lock comprises a parking lock; a control circuit connectable to the internet is built in the internet of things parking lock and is connected with a mobile broadband network and used for receiving a control signal from the mobile terminal so as to lock or unlock a parking lot and sending idleness / occupation information of the parking lot to the server; the system maintenance staff is used for maintaining, correcting and managing the information and data stored in the server and a park management terminal; the park management staff is used for managing and monitoring a park. The system has the advantages that the problems such that the existing owners of cars in cities have difficulties in parking the cars and finding parking lots and payment is time consuming are comprehensively solved through the wireless internet and a simplest method, and the system is of good social benefit.
Owner:达富科技(厦门)有限公司

Block chain unicast/multicast network, block chain device and communication method thereof in mobile broadband network

Embodiments of the disclosure relate to a block chain unicast/multicast network, a block chain device and a communication method thereof in a mobile broadband network. A method executed at a block multicast node of a block chain network includes obtaining and validating new block information. The method further includes steps of generating different types of block multicast messages in response to the validated new block information and on the basis of the type of the block node in a multicast area and the new block information, and sending the different types of block multicast messages to a multimedia broadcast and multicast service (MBMS) node in the mobile broadband network such that the messages are broadcasted to a plurality of block nodes via the mobile broadband network. The embodiments of the disclosure synchronize the latest block chain to all the nodes through the MBMS multicasting, which effectively solves the problem that a traditional P2P network occupies too many network resources and easily causes a network storm. In addition, the block chain nodes rapidly synchronize a block chain through MBMS multicasting, which has the advantages of good real-time performance and easy implementation.
Owner:上海道块信息技术有限公司
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