Zte Corporation

Xi'an Zhongxing New Software Co., Ltd.

Yujie Li

Yajun Zhao

Baoyu Sun

Hanqing Xu

Linmei Mo

Chen Huang

Xiaoming Su

Xin Hui Zhang

Guofeng Chen

Hongfeng Qin

Hongfeng Yuan

Jan H Johansson

Yunfeng Sun

Qian Wang

Shupeng Li

Jun Huang

Aijun Cao

Xin Zhang

Wenfang Wang

Peng Geng

Fan Shi

Qiaoyan Liu

Cunlei Bi

Disclosed are a method for ensuring channel continuity after precoding, a base station, a user equipment (UE), and a computer readable storage medium. The method comprises: the base station notifying the UE of whether a precoding manner with a continuous frequency domain is used in data sent to the UE by the base station, and the base station sending data to the UE according to a precoding manner with a continuous or discontinuous frequency domain. The method further comprises: when the UE determines, according to the notification of the base station, that the precoding manner with a continuous frequency domain is used in the data sent to the UE by the base station, the UE executing an optimized channel estimation and demodulation manner within a processing capability of the UE.

Method for ensuring channel continuity after precoding, base station, UE, and computer readable storage medium

Disclosed are a multi-antenna transmission method, a terminal and a base station, wherein, an eNB sends a UE a SRS transmission mode including new SRS transmission port information and/or a signaling for instructing the UE to perform antenna group alternate transmission as well as a control signaling required by the SRS transmission mode; the UE transmits a SRS using the abovementioned SRS transmission mode, and the eNB estimates a channel information according to the SRS and calculates and transmits a precoding matrix.

Multi-antenna transmission method, terminal and base station

A method for guaranteeing channel phase continuity of pre-coded RB groups, a base station and a computer-readable storage medium are described. The method includes that: a base station implements a channel estimation through a Sounding Reference Signal (SRS) measurement to obtain an uplink channel and obtains a corresponding downlink channel based on reciprocity of uplink and downlink channels; the base station calculates a weight phase correction factor based on the obtained downlink channel and corrects a pre-coding weight with the weight phase correction factor; and the base station pre-codes data according to the corrected pre-coding weight and sends the pre-coded data.

Method for guaranteeing channel phase continuity of pre-coded RB groups, base station and computer-readable storage medium

A method and base station for coordinated multi point data transmission are disclosed. The method includes: a base station receiving a per-cell CQI value reported by a UE; looking up an SINR-CQI mapping table according to the per-cell CQI value, and acquiring a subband/broadband SINR value; performing CQI recalculation according to the subband/broadband SINR value, and acquiring a recalculated subband/broadband CQI value; and selecting modulation and coding according to the recalculated subband/broadband CQI value to schedule data transmission. With the method and base station of the embodiments of the present document, in a CoMP system, in a joint transmission scenario, the accuracy of the CQI value used by the BS for scheduling is improved, and the oscillation during an AMC process is reduced.

Method and base station for coordinated multi point data transmission

The embodiment of the present invention discloses a method, a system and an apparatus for calibrating deviation among multiple access points, which are used for solving a problem that information received by a user equipment (UE) is not synchronous, caused when different access points send data to the UE at the same time, and improving system performance and frequency spectrum efficiency. The method for calibrating deviation among multiple access points comprises the following steps: in step A: a base station sending to a UE a message instructing the UE to perform measurement and return deviation calibration information among the multiple access points (S); and in step B: the base station calibrating the deviation among the multiple access points based on the deviation calibration information among the multiple access points returned by the UE (S).

Method, system and device for calibrating deviation among multiple access points

A method and a base station for calibrating data transmitted by coordinated APs are disclosed. The method includes: a base station obtaining an uplink channel frequency-domain response and a downlink channel frequency-domain response between a first AP and a second AP which participate in coordination; the base station dividing the uplink channel frequency-domain response by the downlink channel frequency-domain response to obtain an uplink and downlink channel response difference between the first AP and the second AP; and the base station calibrating the data transmitted by the first AP and the second AP in coordination according to the uplink and downlink channel response difference. The method and base station in the embodiments of the present document are applied to calibrate the data transmitted by coordinated APs.

Method for calibrating data sent by coordinated APs and base station

A method and device for multi-access point calibration are disclosed. The method includes: a base station estimating a value closest to a true parameter deviation in a value interval of an uplink and downlink channel parameter deviation between access points, wherein the parameter deviation includes a phase difference and an amplitude difference; and the base station performing phase and/or amplitude calibration on service data transmitted jointly by the access points according to the value. With the method and device provided in the present document, a cell calculates a parameter difference between different access points, and then calibrates multiple access points according to the parameter difference, so as to solve a problem that the phase difference and amplitude difference exist between the data transmitted jointly between the multiple access points, and thus it can be guaranteed that good coherent transmission is performed between the access points, thereby improving the system performance.

Multi-access point calibration method and device

The present document discloses an apparatus for receiving Physical Uplink Control Channel (PUCCH) in Long Term Evolution (LTE) system, comprising: blocks of system FFT performing system FFT on data from a plurality of antennas, blocks of PUCCH RB processing units receiving the allocated logic resource index table and the local base sequence and output of the blocks of system FFT, and generating DMRS despread outputs and data values; a block of SR detection for receiving the data values and the DMRS despread outputs, and for generating SR detection results; blocks of user data extraction receiving data values and DMRS despread outputs, and performing user data extraction; blocks of PUCCH user processing units receiving an orthogonal sequence index, the data values and an output from blocks of user extraction, and generating a ACK/NAK/CQI signal for a concerned UE.

Method and apparatus for receiving physical uplink control channel in LTE system

A method and system for measuring noise of a machine are disclosed by the present invention, and the method includes: acquiring a first noise interference set, searching for noise interferences which are less than a preset noise interference threshold from the first noise interference set to obtain a second noise interference set, and then calculating an average value of the second noise interference set; and determining whether the average value of the second noise interference set is less than or equal to a set threshold, and if the average value of the second noise interference set is less than or equal to the set threshold, the current noise of the machine is equal to the average value of the second noise interference set. With the present invention, a more accurate measurement value of the noise of the machine can be obtained.

Method and system for measuring background noise of machine

The present disclosure discloses a method for detecting a signal in an LTE system, the method includes that: an eNodeB calculates a signal power Pand a noise power Paccording to the data part of a signal sent by a UE on a channel resource, a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence, an orthogonal sequence W distributed to the UE, and a sequence Worthogonal to the W stored by itself; and the ratio of Pto Pis compared with a predetermined threshold and a corresponding detection result is determined according to the comparison result. The present disclosure further discloses a device for detecting a signal in an LTE system. The method and device can be used for accurately, simply and easily detecting whether the UE initiates a scheduling request or whether DTX occurs to the UE, so that the eNodeB can determine to whether to continuously send a subsequent message or whether to resend the message which the UE has failed to receive, thereby improving the scheduling performance of the eNodeB.

Method and device for detecting a signal in a long term evolution system

The present invention discloses method for allocating radio resources of a physical uplink control channel (PUCCH) and a radio resource manager, wherein the method includes: a radio resource manager generating a resource pool; the radio resource manager sorting PUCCH resources in the resource pool according to a generating sequence thereof, and making a pointer point to a first PUCCH resource; and the radio resource manager allocating a PUCCH resource pointed by the pointer currently to a terminal and then making the pointer point to a next PUCCH resource. The present invention has the advantage that it is unnessesary to perform a resource search at each allocation of resource, the time for searching resources is saved, the resource search is simplified, and the complexity of a system is reduced greatly.

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Shenzhen, China

Yujie Li