115results about How to "Save channel resources" patented technology

A method and apparatus for sharing a DL-DPCH in an NB-TDD system. Two time slots at the same position in two subframes forming one radio frame are allocated as a DPCH for two UEs. A Node B arranges data and control information for the UEs in the two time slots and transmits the data and control information to the UEs. The UEs extract the data and control information from the two time slots and acquire the data and control information destined for the individual UEs.

The invention provides a method for fetching and identifying the bit rate characteristic of a digital TV signal and a device thereof, which belong to the communication field. The invention provides a device which describes the characteristic parameter of the digital TV bit rate simply and effectively and adopts the characteristic parameter to identify the digital TV bit rate content. The device provided by the invention comprises a sending terminal formed by at least one collecting device and a processor coupled with the collecting device and a receiving terminal formed by at least one collecting device and a control processor coupled with the collecting device. The invention overcomes the limitation that the bit rate contrast method adopted by the digital signal transmission monitoring is dependent on the originally sent signal bit rate. By fetching and identifying the bit rate characteristic of the digital TV, the transmission characteristic parameter of only one low broadband channel is adopted in order to ensure that monitoring points of the digital TV signal are distributed at any places within the range covered by the digital TV broadcast network flexibly, thereby effectively enlarging the monitoring range.

A method for distributing channel in mixed network MN includes sending public control information of mobile self-organized network (SON) by channel preset in cellular network (CN), monitoring the first service channel distribution message in preset channel by terminal in MN and obtaining the second service channel distribution message used for CN communication and down-sent by base station, selecting idle service channel for call in mobile SON and issuing service call request in preset channel by said terminal according to channel occupation information of two said distribution messages, distributing service channel to said terminal by CN for realizing CN mode call with base station.

In an embodiment of the invention, there is proposed a method of and apparatus for accessing in a user equipment, the method including the steps of: i) performing a random access on a predetermined resource according to a channel condition of the user equipment, wherein the predetermined resource is associated with the channel condition of the user equipment; and ii) receiving, on a PDCCH, a response to the random access from an eNB. With this solution, during a random access of a user equipment, particularly a MTC device, an eNB can perform a Random Access Response (RAR) adaptively using a different number of Control Channel Elements (CCEs) according to an indication, capable of reflecting a channel condition, e.g., a signal to noise ratio, of the user equipment, thereby saving the channel resource.

An alternative signaling transmission method includes such steps as determining the least scheduling interval, allocating up and down control channels, dividing up (or down) signaling into several parts, alternatively transmitting them in different time slots, and distinguishing the contents of up (or down) signaling by using a parameter relative to time.

This invention relates to mobile multi-media broadcasting flow sealing method, which si characterized by the following: adopting data frame structure to seal multi-media data composed of frame head , visual section, audio section and data section ; the said frame head comprises visual section indication, audio section indication and data section, wherein, the visual section represents whether is ones in data frame; the said audio indication presents whether there is ones and the data section for ones in the data frame.

The invention relates to a transmission method of non-codebook pre-coding in a long term evolution-advanced (LTE-A) system, which belongs to the field of wireless mobile communications. The method comprises the following steps that: a terminal utilizes the obtained channel information to perform geometric mean decomposition to obtain a pre-coding matrix and complete the pre-coding of sent signals; in a base station, a unitary matrix Q and an upper triangular matrix R can be obtained by calculation and then a quick response (QR) decomposition based particle in cell (PIC) algorithm is adopted to perform the multi-input and multi-output (MIMO) detection and decoding of received signals, and then channel sub-space tracking technology is used, and the signals are pre-coded by the unitary matrix Q and then are sent to the terminal; and at the terminal, a unitary matrix P can be obtained by calculation in the same method, and the received signals are detected by the unitary matrix P and simultaneously are pre-coded. In the method, the algorithm has low complexity, and the feedback codebook sequence number occupies less channel resources, so that the channel utilization can be improved, the interference of the front layer sub-channel to a certain sub-channel signal can be eliminated without amplifying noise, and further, the error propagation effect is effectively reduced.

The invention relates to a method for encapsulation of media data stream in a multimedia broadcasting system, and the media data stream of each channel of the broadcasting system selectively comprises video frequency components, audio frequency components and accessory data components, which comprises the following steps: choosing and encapsulating one or more components among the video frequencycomponents, audio frequency components or accessory data components in need of sending in the data frame of each channel; settling the data and parameters of the selected data components; collocatingthe header and recording the length of the header therein; recording the symbol information and the parameter information of the selected data component type in the header. The method sends multi-media data stream effectively in a channel via the encapsulation components, and sends only the components in need of sending and correspondingly transferring the component broadcasting program needed inthe mobile terminal via the component symbols, which can enhance the sending efficiency, save the mobile terminal power supply and better satisfy the demands of mobile multimedia industry.

The invention discloses a method for stochastically optimizing effective throughput adopting cross-layer joint encoding in an erasure channel. The method comprises the steps that (1) a sending end in the erasure channel enables original data delivered by an application program to be subjected to Raptor code encoding on an application layer, coded data are transmitted to a physical layer for R-S code encoding, and the data subjected to joint encoding are sent to the erasure channel; (2) through transmission of the erasure channel, the data reaching a receiving end are subjected to R-S code decoding on the physical layer, after decoding, the decoded data are transmitted to the application layer to be subjected to Raptor code decoding, then the receiving end feeds the decoding condition back to the sending end, and the sending end takes next action according to the feedback information; (3) a discrete stochastic approximation algorithm is adopted, and a proper cross-layer joint code rate is selected to optimize the effective throughput in an erasure channel communication system. The method can stably and efficiently optimize the effective throughput in the erasure channel to the maximum extent.

The embodiment of the invention provides an OAM (Operation and Maintenance) mode multiplexing device, a manufacturing method and a multiplexing method. The device comprises a mode selection photon lantern, L-mode optical fibers and mode polarization controllers, wherein the mode selection photon lantern is conically shaped and comprises a photon lantern output end and a photon lantern input end; the photon lantern output end is in a conical waist area with the smallest diameter; the photon lantern input end is in an area outside the conical waist area; the photon lantern input end comprises multiple single-mode optical fibers which are arranged at the inlet of a glass casing and are of different diameters and are fixedly arranged and inserted into the glass casing; the photon lantern output end comprises a glass casing outlet at a fused state and multiple single-mode optical fibers at the outlet; the multiple single-mode optical fibers at the outlet comprise a single-mode optical fiberwrapping layer at the fused state and a single-mode optical fiber core leaking outside the single-mode optical fiber wrapping layer; the L-mode optical fibers are fused at the photon lantern output end, are arranged among the mode polarization controllers and are matched with the photon lantern output end; the mode polarization controllers comprise circular ring paddles with grooves; the L-mode optical fibers are fixedly wound on the grooves for fixed circle numbers.

The invention discloses a self-adaptive modulation control method for a time-division synchronization code-division multiple address (TD-SCDMA) system, wherein the steps are: a wireless network controller measures the quality of a first-directional channel, and determines whether the modulation mode is the orthogonal-phase keying modulation or the eight-phase keying modulation; when the modulation mode is one of the two modulation modes, determine whether the measurement value of the quality of the first-directional channel meets the preset first-directional judging criteria of the other modulation mode or not, and if yes, the first-directional modulation mode is changed and allocated into the other modulation mode. By dynamic control on the modulation mode according to the real-time channel quality, when the channel quality is good, the higher-level modulation mode of 8PSK is allocated for users, thereby enhancing the data transmission rate of users or reducing the channel resources occupied by users; when the channel quality is poor, the lower-level modulation mode of QPSK is allocated for users, thereby improving user service quality or enhancing system capacity.

The invention discloses a method for suppressing adjacent satellite interference in a satellite communication system. The method for suppressing adjacent satellite interference in the satellite communication system comprises the following steps: when ground stations communicating with each other exists in the communication network system, marking the two communication parties communicating with each other in the system as a ground station 1 and a ground station 2 respectively; forming the non-orthogonal multiple access through making the ground station 1 and the ground station 2 occupy the same time slot and frequency resource, and performing resource optimal distribution; wherein the resource optimal distribution comprises calculating and obtaining the modulation coding scheme order, the spread spectrum ratio, the communication bandwidth and the slot number respectively according to the transmission rate of the two communication parties, and allocating idle carriers and time slot resources to make the ground station 1 and the ground station 2 occupy the same carriers and time slot resources to send, so as to save the time frequency channel resource; and reducing the off-axis radiation intensity through the modulation coding scheme and the spread spectrum ratio selection method; therefore, the effects that the interference requirements of the adjacent satellite is met and the time and frequency resources are saved compared with direct spread spectrum are achieved.

The invention discloses a four-photon entangled W state-based super-dense coding method for quantum signaling. The problems of low signaling coding capacity, low efficiency and poor security in a quantum communication process are mainly solved. The method is implemented by a process comprising the following steps of preparing four-photon (A, B, C and D) entangled W state as the quantum signaling, and transmitting the photons C and D to a receiver by using a transmitter; performing unitary transformation on the photons A and B to obtain 16 new quantum states; forming an orthogonal basis by using the 16 new quantum states; coding the new quantum states respectively, and sequentially transmitting photons A' and B' obtained by the unitary transformation to the receiver; and after the receiver receives the photons A' and B', arbitrarily selecting a measurement basis from the orthogonal basis, and performing joint measurement on the photons A', B', C and D to measure a new quantum state to finish coding. The method has the advantages of high coding efficiency, high capacity and high security, and can be used for a signaling system for quantum mobile communication.

A data communication method includes: a Radio Network Controller (RNC) sends a notification message to a Node B to instruct the Node B to perform proper operations after a specific event occurs on the User Equipment (UE). A data communication system, a data sending apparatus and a data receiving apparatus are also provided in an embodiment of the present disclosure. Through the technical solution under the present disclosure, when specific events such as cell handover, disconnection and state transition occur on the UE, the RNC that obtains the event information may send a notification message to Node B to instruct the Node B to perform proper operations. Therefore, the Node B is prevented from continuing to send the buffered UE data from the source cell; and in the Cell_FACH state, the present disclosure saves the radio channel resources, shortens the transmission delay, and reduces the transmission packet loss ratio.

The invention discloses a method, device and system for providing and obtaining a pre-encoding matrix of a shaped beam. The method comprises a step of carrying out channel estimation when a detecting pilot signal sent by a central access point is received and obtaining a multipath channel gain matrix H, a step of carrying out matrix SVD on the matrix H by adopting a set matrix decomposition method to obtain the pre-encoding matrix V meeting the preset conditions, wherein the matrix V meeting the preset conditions is a matrix V with the selected part elements same or conjugated, the other part elements same or the real part symbols contrary, and a step of extracting one element from the selected part elements, extracting one element from the other part elements, packaging the extracted elements in a matrix V data package and providing the extracted elements for the central access point. The amount of transmitted information is reduced, the occupied system resources are reduced, and the performance of the system is improved.

The embodiment of the invention discloses a signal transmission processing method, a signal transmission control method, a signal transmission system, user equipment (UE) and a base station. The signal transmission processing method comprises the following steps of: receiving first signal-to-noise ratio offset sent by the base station; acquiring channel quality indicator (CQI) information transmitted in a second-layer space according to a codebook and the first signal-to-noise ratio offset, wherein the codebook comprises a codebook transmitted by the base station or a codebook predetermined by the base station; and feeding the CQI information back to the base station, so that the base station performs signal transmission processing according to the CQI information. In the embodiment of the invention, the UE is only provided with one transmitting antenna, but the UE still can realize two-layer beamforming (BF) transmission; and the UE has low calculation load and does not need the feedback expense of the codebook.