38results about How to "Guaranteed reception quality" patented technology

A technique is provided for delivering content to a user. The user sends at least one quality indicator to a first content-delivery device, referred to as a secondary device. The indicator relates to delivery of a portion of the content by a second content-delivery device, referred to as a primary device. When the secondary device detects an event that might affect the delivery of the content by the primary device to the user, on the basis at least of the quality indicators relating to at least a delivery of content by the primary device, it commands the user to transfer from the primary device to the secondary device in order to enable the secondary device to deliver portions of the content that have not been delivered by the primary device.

The invention provides a wire base station, a mobile station, a wireless communication system and a wireless communication method. The wireless base station (10) includes a multiplexing unit (13) generating user data; a channel assignment control unit (14) for selecting subcarrier groups from a plurality of subcarriers on two carriers, forming two wireless frames including subchannels generated from the subcarrier groups, and for time-division multiplexing and setting the user data and control data to the two wireless frames; and a transmitting and receiving unit (16) transmitting a wireless signal including the wireless frames, wherein the channel assignment control unit (14) divides all of the subchannels in the two wireless frames into areas of destination sectors, stores the control data only in the corresponding area, and stores the user data in all of the areas in the two wireless frames.

Provided in an embodiment of the present invention are a sector selection method during cell handover and a base station controller, the method comprising: determining a first sector, the first sector being a sector in the serving cell of a user equipment (UE) and a sector that the UE is currently in; determining a neighboring sector of the first sector, and determining whether the neighboring sector is the sector of a target cell that the UE will hand over into, the target cell being the neighboring cell of the serving cell; activating the remote radio unit (RRU) or radio frequency unit (RFU) of at least one second sector according to the determination result, such that the RRU or RFU of the at least one second sector transmits information to the UE, the at least one second sector being a sector in the target cell. The present invention effectively improves resource utilization rate while ensuring the receiving quality of a UE, thus reducing the interference on a neighboring cell of the same frequency.

A terminal switching method for switching terminals, in a communication system in which HARQ processing is performed, to which a base station grants a transmission permission, from a terminal A to a terminal B includes a step of notifying the terminal B of aborting of the transmission permission, a step of setting a time point at which an HARQ process whose state of the HARQ processing is a retransmission waiting state with the terminal A is performed as a virtual starting point, a step of setting a retransmission waiting window having a predetermined window length with the virtual starting point being regarded as its starting point, and a step of notifying the terminal B of the transmission permission when there is no HARQ process having the retransmission waiting state with the terminal A, wherein the virtual starting point setting and the window setting are repeated until there is no HARQ process having the retransmission waiting state with the terminal A.

The invention discloses a method and a device in a UE and a base station supporting synchronization signals. The UE first receives the first wireless signal on the first time-frequency resource, and then receives the second wireless signal on the second time-frequency resource. Wherein, the second time-frequency resource is one of K candidate resources, and the position of the second time-frequency resource in the K candidate resources is used to determine {the first time length, R1 antenna ports} at least one of the . The K is a positive integer greater than 1. At least one of {the length of the CP corresponding to the first wireless signal, the length of the CP corresponding to the second wireless signal} is equal to the first time length. The R1 is a positive integer.

The object of the present invention is to achieve reduction of interference between cells and improvement of maximum throughput so as to improve spectrum efficiency. A wireless base station (10) which transmits a radio signal between itself and a plurality of mobile stations (20) by means of OFDMA includes: a multiplexing part (13) for generating user data; a channel assignment control part (14) for selecting a plurality sets of sub-carriers among a plurality of sub-carriers so as to constitute a radio frame containing sub-channels assigned to each of the plurality sets of sub-carriers and for setting in the radio frame the user data and control data by means of orthogonal frequency division multiplexing; and a transmission part (16) for transmitting a radio signal containing the radio frame; where, the channel assignment control part (14) is constituted so that the radio frame is divided into 2 zones for the control and user data and all the sub-channels in the zone for control data are divided into groups for each of sectors; the control data is allocated on the corresponding divided groups; and the user data is allocated on all the sub-channels in the zone for user data.

The invention discloses a movable installation device and installation method of a microseismic sensor, wherein the device includes a grouting installation assembly and a grouting assembly, the grouting installation assembly includes an exhaust pipe, a grouting pipe and several wave guide rods, and the grouting assembly The assembly includes the part of the plug near the bottom of the hole, the part of the plug near the orifice and the compression nut; both parts of the plug are cylindrical structures with one end open, and the bottom is equipped with an exhaust pipe through hole, injection The through hole of the slurry pipe and the through hole of the probe; the overall structure of the probe obtained by connecting several probes end to end in turn, together with the exhaust pipe and the grouting pipe, all pass through the corresponding through holes on the grouting component, and the top guide The part of the wave rod protruding out of the plug near the hole is connected with the compression nut, and the compression nut is pushed by the external force to embed the part of the plug near the hole into the inner surface of the plug near the bottom of the hole, so that the plug is close to the bottom of the hole. The bottom part of the hole expands radially; in addition, the overall structure of the probe protrudes from the top of the compression nut and is fixedly connected with the microseismic sensor. The invention can ensure the sealing quality and achieve the purpose of no slurry leakage.

The invention discloses a pilot pollution abatement beam forming method for a large-scale MIMO system. The pilot pollution abatement beam forming method for the large-scale MIMO system comprises the following steps that (1) it is supposed that the MIMO system comprises L cells, each cell is provided with one base station with M antennas, and all the base stations of the MIMO system are divided into N groups; (2) the optimal beam forming vector of the kth user in the ith cell is obtained according to generalized Rayleigh entropy, the optimal beam forming vector of each user in each group is obtained, and then data transmission is carried out in the MIMO system according to the optimal beam forming vector of each user in each group. According to the pilot pollution abatement beam forming method for the large-scale MIMO system, the channel estimation precision and the spectrum efficiency performance of a multi-cell large-scale MIMO system can be improved, and the expense of the system is low.

The invention provides a method for eliminating a shadow region of a mobile subscriber by using multiple antennae of multiple base station terminals. The method comprises the following steps of: a. analyzing a channel matrix from a base station to a subscriber; b. judging the receiving signal to noise ratio of the subscriber under the condition that subscriber noise power is supposed to be known; c. judging whether the subscriber meets single-cell service condition according to the receiving signal to noise ratio of the subscriber; if so, entering a step d; and otherwise, entering a step e; d. servicing the subscriber only by the station of the current cell, and performing space division multiplexing for the subscriber in the current cell by a base station antenna; e. servicing the subscriber by the base stations of a plurality of cells, and performing space division multiplexing for the subscriber by base station antennae, and servicing the subscriber by different weave beams formed by multiple antennae of base stations of adjacent cells; and f. calculating a wave beam forming vector according to a service mode. The method is favorable for effectively eliminating the shadow region, reducing the complexity of scheduling multiple antennae of the base stations and improving communication quantity.

The present invention provides a real-time self-adaptive optical self-interference elimination system and method based on FPGA and STM32, comprising: a baseband real-time transceiver module completes the real-time transmission of baseband OFDM signals; Convert the radio frequency signal of the local communication information; copy the radio frequency signal of the local communication signal as a reference signal, and transmit it through the radio frequency antenna module; the radio frequency antenna module receives the useful radio frequency signal from another communication unit and is close to the transmitting antenna with the receiving antenna The time-varying radio frequency self-interference signal; after the optical self-interference cancellation module receives the useful signal and the self-interference signal, it adjusts the amplitude and phase of the reference signal through the adaptive control module, and the reference The signal and the self-interference signal cancel each other out to obtain the useful signal after the self-interference is eliminated, and convert the useful signal after the self-interference elimination to the baseband and send it to the receiving end.

The invention discloses a multimedia broadcast / multicast data transmitting / receiving method, a device and a system. The method comprises the following steps: the multimedia broadcast / multicast data are decoded by low-density parity check codes (LDPC); service data after being decoded can be divided into first information and second information, and then the first information and the second information are transmitted; a receiving terminal judges the environmental quality of a signal path where the receiving end is located; when the environmental quality of the signal path is good, only the first information can be received; while the environmental quality of the signal path is poor, both the first information and the second information can be received. According to different signal path environment where the receiving terminal is located, the receiving terminal can achieve the purpose by adopting the invention that the MBMS service data can be received with lower receiving power whileensuring the received service data quality.

The invention discloses a method and a device for processing received signals of wireless communication system terminals, which ensures the HSDPA signal-receiving quality of the terminals. The invention adopts a technical scheme that the method comprises: acquiring a modulation mode of HS-PDSCH signals in advance by resolving HS-SCCH information; utilizing the time left by acquiring the modulation mode of the HS-PDSCH signals in advance to reset a receiving channel according to the modulation mode, control the ratio of quantization noise to noise power and reduce deterioration of the quantization noise to the demodulation of signal-to-noise ratio; and receiving HS-PDSCH information through the reset receiving channel. This invention is applied in the field of mobile communication.