375results about How to "Guaranteed transmission performance" patented technology

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 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 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 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 relates to the field of mobile communication and particularly relates to a traffic load balancing method based on a leaf-spine topology structure, devices and a system. According to the traffic load balancing method based on the leaf-spine topology structure, a first leaf device sends a plurality of congestion detection messages to a second leaf device through a plurality of paths; each congestion detection message carries a congestion value; the congestion values are used for indicating the congestion degree of the paths passed by the congestion detection messages; and the first leaf device selects at least one path to send data to the second leaf device according to the congestion value of each path. Through application of the scheme provided by the invention, the load balancing of a whole network is realized.

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 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 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.