316 results about "Third generation mobile communications" patented technology

A method for providing concurrent service in a mobile communication system is disclosed in which a SCCP connection identifier SLR/DLR of a lower layer and a Service Option Connection Identifier (SOCI) on an IOS message of the higher layer to be exchanged are transmitted when a SCCP connection is established between a BSC and a MSC, thereby providing additional services to those already requested from a mobile station after the SCCP connection establishment without stopping a currently used service. According to the method, the concurrent service is provided while minimizing the conventional call processing procedures on the interface between the BSC and the MSC, thereby allowing a subscriber to use new additional service without stopping the current service or concurrently use a plurality of services such as voice and packet data services. Furthermore, a flexible confront is possible to a future development direction of the network. Providing concurrent service is an essential function of the third generation mobile communication network in a multimedia environment.

í«Distant positioned radio frequencyí» places transceiver of base station near to antenna and far apart from devices of base station. Using medium frequency transmission, the invention implements technique of í«distant positioned radio frequencyí» in order to solve issue of small covering radius of sub zone, and high cost of base station caused by radio wave propagation property in 2GHz frequency range The medium frequency transmission separates transceiver part in analog radio frequency from digital signal process in base band of devices of base station so as to form a public unit in room and multiple remote front end devices in radio frequency, where interface in medium frequency is located between them. Being connected in series or star form through wired or wireless modes, the interface implements services, reference clock, frequency conversion, encoding and path jointing etc, for various control signals. Features are: convenience and cheap.

This invention discloses a support method of high speed down stream data packet access system to different service qualities combining characters of HSDDA and drawing lessons of the third generation mobile communication system REL99 to support different service qualities putting forward mapping and distribution of system service quality parameter, increasing queues for storing different transmitting channel data on media access control layer of HSDPA base station and designing a queue arrangement algorithm for meeting requirement of different service qualities.

An automobile burglar proof system based on the third mobile communication network is prepared as forming 3G mobile communication operation network by radio access network and core network, forming user unit by vehicle terminal and mobile phone terminal, combining 3G mobile communication operation network with Bluetooth technique for realizing P2P real time monitoring.

The invention discloses a Bayesian algorithm-based content filtering method. Content filtering is performed for text information in a 3rd generation mobile communication core network, text classification is performed by using a double threshold-based Bayesian algorithm, C1 is set to be normal information, C2 is set to be junk information, a classifier estimates the probability that a characteristic vector X which represents a data sample belongs to each class Ci, and a Bayesian formula for the estimation is that: P(Ci/X) = P(X/Ci) P(Ci)/ P(X), wherein i is more than or equal to 1 and less than or equal to 2, the maximum value of a posterior probability is called the maximum posterior probability, for an error (a reference source is not found) of each class, the error (a reference source is not found) only needs to be calculated, a characteristic vector X of an unknown sample is assigned to the Ci class of the error (a reference source is not found) with the minimum risk value. Characteristic selection is performed by adopting document frequency (DF), and classification is performed by using minimum risk-based double threshold Bayesian decision. In a time division-synchronous code division multiple access (TD-SCDMA) mobile internet content monitoring system, the algorithm has higher controllability and can realize real-time high-efficiency classification of mass text information.

The invention relates to the field of wireless communication, in particular to a joint estimation method of time deviation and frequency deviation in a third-generation mobile communication long-term evaluation system (short for 3G LTE). The method is characterized by comprising the following steps of: A. separating channel gain estimated values of PUSCH (Physical Uplink Shared Channel) demodulating reference signals (DM RS) of two time slots from received subframe data; B. calculating a correlation value of channel gain between two subcarriers which are respectively positioned on different PUSCH DM RS and have the frequency domain distance of s subcarrier intervals so as to obtain a joint estimation phase difference of time deviation and frequency deviation; and C. respectively obtaining the phase deviation of time deviation and frequency deviation according to the joint estimation phase difference of the time deviation and the frequency deviation so as to estimate a time deviation value and a frequency deviation value of a system. The method can be used for reducing the calculation amount of an estimation algorithm on the basis of ensuring estimating precision, thereby ensuring the real-time receiving performance of the system.

An important objective for third generation mobile communications systems is to provide IP services, and a very important part of these services will be the conversational voice. The conversational voice service includes three distinct information flows: session control, the voice media, and the media control messages. In a preferred embodiment, based on the specific characteristics for each information flow, each information flow is allocated its own bearer with a Quality of Service (QOS) tailored to its particular characteristics. In a second embodiment, the session control and media control messages are supported with a single bearer with a QoS that suits both types of control messages. Both embodiments provide an IP conversational voice service with increased radio resource efficiency and QoS.

The invention relates to a method with differential service, which comprises: when the user accesses into network, the mobile exchange center confirms the user group number at the user priority group; when there is service access, the mobile exchange center relative to the service, based on the relative information and the user group number, confirms the service priority and the service quality level, to obtain the service priority and the service quality information; the mobile exchange center sends said service priority and the service quality information to the relative base station controller; the mobile exchange center and the base station controller, based on the service priority and the service quality, distribute wireless resource. The invention can be used in second and third generation mobile communication systems.

The invention relates to a system which can realize the remote video monitoring based on the third generation mobile communication system and the process. The system comprises a video monitoring terminal device and a remote 3G cell phone, wherein the video monitoring terminal device comprises a 3G cell phone communication module, a camera shooting module, a DTMF decoding module, a tripod head function module and a central processing module. The process comprises a video monitoring initialization arrangement operation, a user initiation video monitoring operation and a system intrusion detection video monitoring operation. A monitoring system can be simply installed through adopting the system and the process which can realize the remote video monitoring based on the third generation mobile communication system without limiting by a wiring, the attack of virus software can be prevent at a maximum degree to protect the privacy of user which is monitored without help of the other platforms, which is fast, safe and reliable, can not generate false alarm, the usage is safe and fast, the working property is stable and reliable, and the application range is more extensive, and the invention lays the firm foundation for the further development of the third generation mobile communication system telecommunication appreciation business.

The invention disclosed a method which achieves call in a multimedia communication call control. This method includes: set user service information of rank in advance, obtain customer service information of rank related to call entities, according to user information of rank, defined users call processing priority, and call in accordance with established call processing priority. According to user information of rank, the invention brings up processing priority call methods in the third generation mobile communication multimedia communications call control, such as IP Multimedia Subsystem (IMS). The method provides a different priority call for different user service rank, and ensures the call-processing speed of the important network user's, improves customer satisfaction and loyalty.

The present invention discloses a baseband chip and a method to implement multi-mode switching for a mobile terminal based on the baseband chip, the baseband chip of the mobile terminal in the present invention includes three subsystems of a source encoding/decoding subsystem 102, a wireless transmitting/receiving subsystem 101, a wireless transmitting/receiving and source encoding/decoding common control and process subsystem 100, the baseband chip may be implemented by using a single chip based on CMOS technology. The baseband chip of the present invention are suitably used to a TD-SCDMA mode mobile terminal or a multi-mode mobile terminal including TD-SCDMA, the new requirements proposed to the mobile terminal of the third generation mobile communication technology are met, and repeated design are decreased; furthermore, the method of switching among different communication modes for the mobile terminal based on the above mentioned baseband chip in the present invention implements the switching among different communication modes for the mobile terminal.

The apparatus comprises: a data exchanging interface used for intercommunication with external data; a FPGA module used for analyzing and giving out the received data, for packaging and giving out the transmitted data and for control the clock signal of the apparatus; a memory module used for buffering the data after the analyzing and before the packaging and relevant instruction data; a DSP used for reading out the data in the memory module and making relevant process, and for processing the transmitted data and transmitting it to the FPGA. The system completes the relevant testing based on the apparatus above. The invention can be used in TD=SCDMA, CDMA2000 and WCDMA system.

The invention provides a method and a system for adjusting a vehicle travelling state information transmitting rate. The method comprises the following steps that: a vehicle inside a first management region transmits vehicle travelling state information receiving and transmitting records to roadside equipment to which the vehicle belongs through a base station of a third generation mobile communication network; the roadside equipment calculates network performance parameters of a WAVE-based wireless network according to the vehicle travelling state information receiving and transmitting records; a judgment on whether any network performance parameter surpasses a preset threshold value is made, an optimum transmitting rate value is calculated by using the network performance parameters if any network performance parameter surpasses the preset threshold value by judgment and the optimum transmitting rate value is broadcast to a vehicle inside a first coverage area through the WAVE-basedwireless network; and the vehicle in the first coverage area broadcasts the optimum transmitting rate value to the vehicle which is outside the first coverage range and inside the first management region by using a multi-hop router through the WAVE-based wireless network. By the method and the system of the invention, the vehicle travelling state information transmitting rate can be adjusted in real time and accuracy is enhanced.

The invention discloses a subdistrict reselecting method which is applied to a third generation mobile communication enhancing high-speed packet access system. The subdistrict reselecting method comprises the following steps: a network lateral user device issues an abuttal subdistrict list and notifies the information whether subdistricts support an enhancing forward access channel and/or an enhancing paging channel in the abuttal subdistrict list to the user device; after the user device who uses the enhancing forward access channel constructs a reselecting subdistrict list, subdistrict residents who support the enhancing paging channel are preferentially selected from the reselecting subdistrict list according to the information whether supporting the enhancing forward access channel and/or the enhancing paging channel. The method ensures the service transmission continuity and avoids the UE unnecessary state transference.