377results about How to "Guaranteed transmission performance" patented technology

The invention discloses a method for selecting demodulation reference signal (DMRS) pattern information. The method comprises the following steps: informing a terminal of selected DMRS pattern information in a preset way through a base station; transmitting a DMRS to the terminal according to the selected DMRS pattern information through the base station. A system and a device for selecting the DMRS pattern information are further disclosed. By adopting the method, the system and the device, different DMRS pattern information can be selected according to different environments to transmit the DMRS, thereby ensuring the accuracy and transmission performance of channel estimation.

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.

The invention discloses an uplink power control method, equipment and system. The method comprises the steps that network side equipment configures at least two sets of uplink power control parameters corresponding to uplink signals for user equipment; the user equipment is informed with the configured sets of uplink power control parameters, so that the user equipment determines the emission power of the uplink signals. According to the technical scheme, the uplink emission power can be controlled flexibly.

The present invention provides a special pilot frequency transmission method of the LTE system. When the base station schedules the physical descending control channel and special pilot frequency onto the identical symbol in the sub-frame of the LTE system, the base station only transmits physical descending control channel on the identical symbol. The present invention solves the interfere problem between the physical descending control channel and the special pilot frequency, thereby ensuring the transmission performance of the physical descending control channel.

The invention discloses a method and user equipment for selecting a physical uplink sharing channel. The method comprises that: the user equipment selects a physical uplink sharing channel with the highest priority for bearing uplink control information from a plurality of physical uplink sharing channels sent on a subframe according to the priorities of the physical uplink sharing channels. The method effectively solves the problem that how to select a PUSCH for bearing the UCI from a plurality of PUSCH by the user equipment in the LET-A system, so when the user equipment sends a plurality of PUSCH on a subframe and the UCI is needed to be borne on the PUSCH for transmission, the user equipment can uniquely determine the PUSCH for bearing the UCI, the UCI transmission performance is ensured, and the influence on uplink data is reduced as much as possible.

The invention discloses a network system and a method for guaranteeing multi-type service quality. A service perception module and a pre-labeling module are arranged in a source host and used for perceiving sent service data packets and pre-labeling the grouped data packets with different semantic priorities for sending according to the perception information when a network layer is encapsulated.An edge router and a core router are provided with a multi-service agent respectively. The edge router is also provided with an acceptance controller for mapping the semantic priorities of the service data packets into network priorities and distributing the service data packets to the corresponding service agents. The homogeneous service agents in all the routers are interconnected to form virtual topologies, and each virtual topology is provided with an independent routing table for routing selection of the service data packets of different priorities on the corresponding virtual topologiesrespectively. Service routing of high priority is guaranteed, and influence on low priority services is reduced as much as possible; and the invention also provides a method for setting link weights,which distributes the network traffic to each link more uniformly and improves the throughput rate.

The embodiment of the invention discloses a method for transmitting a wavelength division multiplexing passive optical network. The method comprises the following steps of: receiving a downlink optical signal from local terminal equipment, and dividing the downlink optical signal into a first optical signal and a second optical signal; demodulating the first optical signal so as to restore downlink data carried in the first optical signal; performing reflection irrelevant to polarization on the second optical signal so as to obtain a reflected light of which the polarization direction is orthogonal to the second optical signal, and loading uplink data to the reflected light corresponding to the second optical signal by a modulation method so as to generate an uplink optical signal carrying the uplink data; and transmitting the uplink optical signal to the local terminal equipment. By the embodiment of the invention, the decoloring of a light source can be realized, the cost is reduced effectively, and the transmission performance after reflection and modulation is guaranteed. The embodiment of the invention also discloses a system and a device for transmitting the wavelength division multiplexing passive optical network.

The invention discloses a method for obtaining power control parameters. The method comprises: when the data types carried by a physical uplink sharing channel on a sub-frame i is judged to simultaneously contain uplink sharing channel data and uplink control information by a terminal, the terminal obtains the transmission format excursion parameter DeltaTF(i) of the sub-frame according to the transmission block size TBS obtained in a corresponding physical downlink control channel when primarily transmitting the uplink sharing channel data and a bandwidth MPUSCH for transmitting the uplink sharing channel; wherein, i is a nonnegative integer. The technical scheme of the invention solves the problem of system performance descending caused by the mismatching between the emission power of the PUSCH and the uplink control information coding performance on the PUSCH and ensures the transmission performance of the uplink control information, thereby ensuring the integral performance of the system.

The invention provides a method for transmitting a synchronization channel. The method comprises the following steps that: synchronous signals transmitted on a P-SCH and an S-SCH are generated; the synchronous signals are multiplexed on specific OFDM symbols so as to form the P-SCH and the S-SCH, wherein the OFDM symbols do not carry any one kind of signals of DMRS, CSI-RS and TRS; and the P-SCH and the S-SCH are transmitted. The invention also discloses a method for transmitting a P-BCH. According to the technical scheme of the invention, conflict between the P-SCH and the S-SCH and the OFDM symbols of the DMRS, CSI-RS and TRS can be avoided, and therefore, the flexibility of system configuration can be improved, and the complexity for UE to search synchronization channels of an existing LTE system and an existing NCT system can be decreased. According to the technical scheme of the invention, the conflict between the P-BCH and the OFDM symbols of the CSI-RS can be avoided, and therefore, the flexibility of CSI-RS configuration of a system can be increased, and the transmission performance of the P-BCH of the NCT system can be ensured.

The invention discloses a method and a device for transmitting uplink control information (UCI) on a physical uplink shared control channel (PUSCH). The method and the device are used for ensuring transmission performance of the UCI and avoiding waste of resources for transmitting the UCI on the PUSCH. The method for transmitting the UCI comprises the following steps that: user equipment (UE) determines a resource offset parameter corresponding to the UCI according to the feedback bit number of the current UCI to be transmitted; and the UE determines the transmission resource of the UCI on the PUSCH according to the resource offset parameter corresponding to the UCI, and transmits the UCI according to the transmission resource.

The embodiment of the invention discloses a method and an apparatus for updating time division duplex TDD uplink and downlink configuration and relates to wireless communication field. The method and the apparatus are used for preventing a problem of inconsistency of TDD uplink and downlink configuration understood by a base station and a terminal in order to guarantee system transmission performance. The base station and the terminal determine effective time of updated TDD uplink and downlink configuration according to a same effective time determining method and begin to use the updated TDD uplink and downlink configuration to perform data transmission when the effective time is reached. The TDD uplink and downlink configuration that has not updated is always used for performing data transmission before the effective time is reached. Thus, the problem of inconsistency of TDD uplink and downlink configuration understood by the base station and the terminal is prevented and the system transmission performance is guaranteed.

The invention relates to a heterogeneous network joint user correlation and a content cache method. The method includes: (1) carrying out modeling on user business requirement characteristics; (2) establishing content cache variables of a cellular base station BS and a WLAN access point AP, and carrying out modeling on qualifications; (3) carrying out modeling on user correlation variables and qualifications; (4) carrying out modeling on user total transmission time delay; (5) carrying out modeling on time delay corresponding to a user access BS; (6) carrying out modeling on time delay corresponding to a user access AP; (7) carrying out modeling on time delay corresponding to user backhaul transmission at the BS or the AP; (8) carrying out modeling on user transmission data speed and qualifications; (9) on the basis of minimization of the user total transmission time delay, determining an optimizing strategy of distribution of the user correlation and cache contents. According to the method, transmission performance and user experience are effectively ensured, the content cache is individually carried out, optimal distribution of the user correlation and the cache contents are reached, and the minimization of the user total transmission time delay is achieved.

The invention discloses an information transmission method and apparatus. The method comprises the following steps: setting transmission windows in a scheduling window, wherein one scheduling window comprises K transmission windows, one transmission window comprises P available sub-frames, K is an integer greater than 0, and P is an integer greater than 1; and transmitting information by the available sub-frames in the transmission windows. According to the technical scheme provided by the invention, by adoption of the manner of transmitting information by at least two sub-frames in one transmission window, channel encoding or rate match for system information, such as an SIBI message, is not limited to a single sub-frame anymore, the information transmission method and apparatus are particularly suitable for the transmission of system information of an NB-IOT system as an example, and ensure that the transmission performance of the system information, such as an NB-IOT SIBI message.

The invention discloses a data transmission method and device based on an MAC (media access control) sublayer and an RLC (radio link control) sublayer. In the method, the MAC sublayer determines quantity of data which can be transmitted on a logical channel and the quantity of data which can be transmitted by the current transmission opportunity RLC sublayer; the MAC sublayer sends a transmission opportunity notice to the RLC sublayer, wherein the transmission opportunity notice is used for indicating the quantity of data which can be transmitted on the logical channel and the quantity of data which can be transmitted by the current transmission opportunity RLC sublayer; the RLC sublayer determines the actual quantity of transmitted data according to the quantity of data which can be transmitted on the logical channel and the quantity of data which can be transmitted by the current transmission opportunity RLC sublayer. In the embodiment of the invention, additional input information is introduced in the transmission opportunity notice and the relevant operations of the RLC sublayer are clear, thus the transmission performance of air interface data can be ensured.

The invention discloses a method for processing uplink transmission. The method comprises steps that: UE receives uplink reference uplink / downlink configuration and information of an interference level of an uplink subframe; the UE receives UL Grant, uplink transmission states of two subframes are scheduled simultaneously from the UL Grant, and a method for sending PUSCH and A-CSI is determined by the UE according to the interference level of the uplink subframe. The invention further discloses the method for processing uplink transmission. The method comprises steps that: the UE receives the uplink reference uplink / downlink configuration, the UE receives the UL Grant, the uplink subframe presently scheduled by a base station and indicating information of a bit number of HARQ-ACK information needing feedback are acquired according to a UL index domain; and the UE sends the PUSCH and the HARQ-ACK information with length of the bit number. Through the method for processing uplink transmission, on the condition that uplink reference uplink / downlink configuration 0 is employed, validity of power control can be guaranteed, uplink transmission performance is improved, and A-CSI transmission performance is guaranteed. The method can further reduce cost for transmitting the HARQ-ACK on the PUSCH.

The invention relates to a flexible optical network anycast business energy-saving routing method based on resource perception, and belongs to the technical field of optical fiber communication. According to the method, an anycast business data center selection mechanism based on resource perception is adopted firstly, a data center with the highest resource available matching degree is selected for business by the mechanism according to the anycast business resource demands and data center available resources, and "equal" allocation of the data center resources is realized to some extent; furthermore, a dredge-based green and energy-saving routing and frequency spectrum allocation strategy realizing transmission from the data center to request users is adopted, electric layer dredging is selected for anycast business by the strategy for priority , then optical layer dredging is selected secondarily, and business is enabled to find a transmission optical path with the minimum energy consumption by the routing strategy with fusion of multipath and single paths so that link frequency spectrum utilization rate can be enhanced and network blocking rate can be further reduced. Frequency spectrum flexible optical network service quality can be effectively enhanced and network energy consumption can be reduced by fusion of the data center selection mechanism and the green and energy-saving routing and frequency spectrum allocation strategy.

The invention discloses an SSB candidate position index indication method and device, an SSB candidate position index receiving method and device, a storage medium, a base station and user equipment.The SSB candidate position index indication method comprises: determining the maximum number of SSB candidate position indexes capable of being sent in a DRS transmission window under the current subcarrier interval; determining the number of bits occupied for sending the SSB candidate position indexes according to the maximum number of the SSB candidate position indexes; and determining to indicate the SSB candidate position index by adopting the highest P bit in the PBCH payload and the sequence of the DMRS according to the bit number, or indicate the SSB candidate position inde by adoptingan original SSB index bit and a newly added index bit in the PBCH load, wherein the sequence of the DMRS occupies Q bits, and P is the difference between the bit number and Q; and sending an SSB, wherein the SSB comprises the PBCH payload. According to the technical scheme of the invention, the SSB candidate position index can be indicated in an unlicensed frequency band higher than 6GHz.

The present invention discloses a method for ensuring wireless data transmission by using fountain code-based symmetrical encryption. The method comprises the following steps that: 1) K encrypted source data packets are obtained; 2) fountain code encoding packets are obtained, the serial numbers and encoding information of the fountain code encoding packets are interposed into the headers of the fountain code encoding packets; 3) when a legitimate receiving end successfully completes fountain code decoding according to the received fountain code encoding packets, and restores the encrypted source data packets, the legitimate receiving end constructs a serial number set V according to the serial numbers of all the currently-received fountain code encoding packets; 4) a legitimate transmitting end performs XOR encryption on a random bit sequence k by using fountain code encoding packet data corresponding to all serial numbers in the serial number set V so as to obtain an encrypted random bit sequence k'; and 5) the legitimate receiving end decrypts the encrypted random bit sequence k' to obtain the random bit sequence k, and then decrypts the encrypted source data packets according to the random bit sequence k to obtain original data streams. With the method adopted, the security of wireless data transmission can be effectively improved, and the feedback load of the legitimate receiving end can be decreased.

The invention discloses a bidirectional real-time communication system and method based on a WebSocket and a message queue and relates to the technical field of communication. The problem that an existing real-time communication scheme based on the WebSocket protocol is liable to result in the condition that rear end service and a database need to bear a great deal of concurrent pressure is solved. According to the technical scheme key point, the system comprises a server and clients. The server comprises a marking module which is used for establishing unique identifications for the clients connected with the server, and an index module which is used for establishing indexes according to the unique identifications established by the marking module, wherein the indexes are used for positioning positions of the clients in WebSocket service. The server receives messages issued by a receiving message producer from a subscribed message queue in a message queue consumer mode and pushes the received messages to the clients according to the indexes. The server receives the messages passively and then pushes the messages to the corresponding clients, so the performance problem resulting from polling is solved.

The embodiment of the invention discloses a method and equipment for controlling coexistence interference coordination in time division multiplex (TDM) equipment. By utilizing the technical scheme of the embodiment, coexistence interference coordination in the TDM equipment can be executed, so the coexistence interference coordination in the TDM equipment adopted by terminal equipment can be guaranteed to adjust immediately according to the variation of signal channels of a long term evolution (LTE) system, variation of a data transmission state and variation of current service demand, while the coexistence transmission performance of multiple wireless systems in the equipment can be guaranteed, and the connection property and systematic performance of the LTE system can be better guaranteed.

The invention discloses a realizing method, a dividing method and a multiplexing method of a feedback channel. The realizing method of the feedback channel comprises the following steps: dividing an uplink HARQ feedback area into HARQ feedback channel transmission resource blocks with the number of N according to a predetermined rule, wherein the uplink HARQ feedback area consists of M logic resource blocks, wherein both N and M are natural number; and each HARQ feedback transmission resource block multiplexes HARQ feedback channels with the number of R in the form of orthogonal code, wherein R is a natural number. By adopting the technical scheme, the uplink chain channel resource can be efficiently utilized, and the transmission performance of feedback information is ensured.

The invention discloses an optical signal receiving device, an optical signal receiving method, and a coherent optical transmission system with the device, relating to the field of coherent optical transmission systems. The optical signal receiving device comprises: a local laser, two polarization beam splitters, two polarization beam combiners, two photodetectors, two analog to digital converters, and a digital signal processing unit, wherein the digital signal processing unit comprises a self-beating frequency noise eliminating module configured to eliminate the influence of the self-beatingfrequency of the signal on the system performance, and a phase noise compensation module configured to eliminate the phase noise of the signal by utilizing the phase noise compensation algorithm. Theinvention is capable of solving the problem of high cost of laser in the existing coherent optical transmission system.

The invention relates to a novel optical fiber filling paste for a polypropylene tube optical cable. The novel optical fiber filling paste is composed of synthetic oil A, high-viscosity synthetic oil B, anchoring agents, viscosity index improvers, gelling agents, thickening agents and antioxidant. The invention further provides a preparation method of the novel optical fiber filling paste. The novel optical fiber filling paste is applicable to an optical fiber loose tube made of the polypropylene material, and has the main features of fine compatibility with the polypropylene material (under the temperature of 80 DEG C for 672 hours, the weight gain ratio is less than or equals to 15%; and under the same experimental condition, the weight gain ratio of a common optical fiber filling paste is larger than 30%), colloid stability and oxidation stability, heat resistance, weather resistance, no system oil separation and low acid value. And the novel optical fiber filling paste is high in water resistance, is not emulsified, fine in high-temperature dripping, high-and-low temperature resistance, and is favorable for the control of the residual length of an optical fiber in the loose tube. Therefore, the optical fiber and a cable core can always be in a most free and unstressed state respectively in the polypropylene loose tube and the cable, and performance transmission of the optical cable is guaranteed.

The invention relates to a method and a device for reducing VDSL high frequency crosstalk; the method mainly comprises the following steps: firstly, the electric length value of a VDSL (very high bit rate digital subscriber line) is determined; secondly, according to the electric length value, the frequency range of the signal transmitted through a corresponding line is determined; moreover, signal is transmitted through a corresponding line according to the determined frequency range. The invention is mainly used to switch off the transmission of high frequency signal and only transmits low frequency signal when the electric length value of a line exceeds a preset value, thereby reducing the crosstalk in the line. The implementation of the invention can effectively overcome the crosstalk on an adjacent line during the channel finding stage of the VDSL, thereby ensuring the transmission performance of the VDSL transmitting data; meanwhile, the implementation of the invention is based on the prior standard; therefore, the invention has the advantages of simplicity and easy implementation.

The embodiment of the invention provides an uplink transmission method, an uplink configuration method, a terminal and a base station. The method at the terminal side comprises the following steps: acquiring configuration information of uplink reference signal resources configured for the terminal by the base station; sending an uplink reference signal according to the configuration information ofthe uplink reference signal resource; enabling the terminal to receive uplink transmission indication information determined by the base station; and performing uplink transmission according to the indication information. The scheme of the invention provides a sending and receiving scheme of the interaction information of the terminal and the base station with respect to the coherent transmissioncapability of the sending path, and an interaction scheme of signaling such as resource configuration, uplink access permission and the like based on the interaction scheme, thereby ensuring the uplink transmission performance of the terminal.

The invention discloses a method for dividing uplink HARQ feedback channels and a method for implementing uplink HARQ feedback channels. The method for dividing the uplink HARQ feedback channels is used in an uplink frame structure of a wireless communication system, and the method comprises that: an uplink HARQ feedback area consists of a plurality of logic resource blocks, the plurality of logic resource blocks are divided into a plurality of fragments, all the fragments are divided into N HARQ feedback channel transmission units, and the N is a natural number, wherein each HARQ feedback channel transmission unit comprises a plurality of fragments, and the HARQ feedback channel transmission units do not comprise the same fragments; and the fragments of the HARQ feedback channel transmission units are divided into a data area and a pilot area according to the same mode respectively. Through the method, a plurality of HARQ feedback channels are multiplexed to the same HARQ feedback channel transmission unit in a code division multiplexing mode so as to utilize the uplink channel resources and ensure the transmission performance of feedback information.

The embodiment of the invention provides an uplink control information UCI transmission method, a user terminal and a base station. The method is applied to a user terminal, and comprises the following steps: determining whether a multi-time-slot PUSCH which is at least partially overlapped with a single-time-slot PUCCH in time exists for the single-time-slot PUCCH; if the multi-time-slot PUSCH which is at least partially overlapped with the single-time-slot PUCCH in time exists, transferring the UCI carried by the single-time-slot PUCCH to each time slot of the multi-time-slot PUSCH for transmission, and discarding the single-time-slot PUCCH; or, if the multi-time-slot PUSCH which is at least partially overlapped with the single-time-slot PUCCH in time exists, transmitting the UCI borne by the single-time-slot PUCCH in the single-time-slot PUCCH, and discarding the time slot which is overlapped with the single-time-slot PUCCH in time in the multi-time-slot PUSCH. Thus, the embodimentsof the present invention can effectively ensure the transmission performance of the UCI on the premise of ensuring that no uplink channel conflict occurs.

The embodiment of the invention provides a repeated transmission method and device, communication equipment and a storage medium. According to the method, a repeatedly transmitted service channel is scheduled through a physical downlink control channel (PDCCH), and a scheduling timing interval is optimized and is set as a negative value, so that the reliability is improved by using repeated transmission, the low-delay transmission effect is ensured, and the low-delay and high-reliability communication requirement is met. Besides, by setting the scheduling timing interval negative number, the repeated transmission scheduling of the PDSCH is indicated in advance, the processing time delay of the terminal is reduced, and the low-time-delay and high-reliability transmission is ensured.

The invention relates to a processing technology for improving performance of a Fe-based compound superconductive tape. The processing technology for improving performance of a Fe-based compound superconductive tape includes the steps: preparing Fe-based superconductor precursor powder; filling a sheath with the precursor powder to obtain a tube-loading composite; drawing the tube-loading composite into a single-core wire; cutting the single-core wire into a plurality of identical short samples, inserting the identical short samples into the outer sheath to obtain a multi-core composite tube;after the composite tube is drawn into a wire of a certain diameter, repeatedly rolling the wire (during the rolling process, the two ends of the samples are bitten into the roller in turn), and thenobtaining a multi-core tape with certain thickness; and under an Ar atmosphere at 500 to 1100 DEG C, performing final thermal treatment on the obtained Fe-based multi-core tape. Compared with a multi-core tape obtained by a unidirectional rolling technology, the multi-core tape obtained by the processing technology for improving performance of a Fe-based compound superconductive tape through the repeated rolling mode has no cracking phenomenon in each superconductive core of the multi-core tape, and the integrity of the superconductive core is preferable, and the critical transmission currentIc of the tape and the critical engineering current density Je of the tape are significantly improved.