A method, device and system for realizing data demodulation

Abstract

The embodiment of the present invention discloses a method, device and system for realizing data demodulation; wherein the method includes: sending the same cyclic shift CS hopping information to the user equipment UE, and the CS hopping information is used to indicate UE Turn off group hopping and / or sequence hopping, and instruct the UE to generate the CS hopping scheme used by the reference signal RS; obtain the RS sent by the UE, estimate the radio channel fading according to the RS, and then estimate the radio channel fading according to the radio channel fading The estimated value demodulates the data information. By adopting the method, device and system of the embodiments of the present invention, uplink RSs sent by different UEs can be kept orthogonal to each other, thereby improving data demodulation performance.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and system for realizing data demodulation. Background technique [0002] At present, during the data transmission process, UE (User Equipment, user equipment) will also send RS to the network side device while sending data to the network side device, so that the network side device can use the RS (Reference Signal, reference signal) to estimate wireless channel fading, and then make the network side device use the estimated channel fading to demodulate the data sent by the UE. [0003] Obviously, from this process, it can be seen that the performance of the network side equipment to demodulate the data depends to a large extent on the accuracy of the wireless channel fading estimation, and the accuracy of the wireless channel fading estimation depends on the UE sending The RS, that is, the RS sent by the UE while sending data directly affects the...

AI Technical Summary

Problems solved by technology

The most effective way to reduce the interference received by UEs when sending RSs is to make the RSs sent by all UEs orthogonal to each other, that is, to realize the orthogonalization of RSs; however, in the existing application process, a UE is usually only served by one cell. Since the network-side equipment corresponding to a cell cannot know the RS allocated by other cells for its UE, it is impossible to realize RS orthogonalization in the true sense; Hopping, sequence hopping or CS (CyclicShift, cyclic shift) hopping and other methods make the interference between RSs sent by different UEs randomized

[0004] However, with the development of technology, in view of the problem that a UE is usually only served by one cell, CoMP (Coordinated Multiple Point transmission / reception, Coordinated Multiple Point transmission / reception) technology has also appeared, that is, a UE can be served by multiple cells , so that the efficiency of uplink transmission can be enhanced; however, due to the limitation of interference randomization design in the prior art, the parameters used by UEs from multiple cells to generate RSs are often different, which leads to this CoMP technique It is still impossible to realize that UEs from different cells send orthogonal RSs, so that the CoMP technology cannot obtain its due effect of enhancing uplink transmission efficiency

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