US-12627541-B2 - Multi-user multiple-input multiple-output detection method and apparatus, electronic device, and medium

US12627541B2US 12627541 B2US12627541 B2US 12627541B2US-12627541-B2

Abstract

Provided are a multi-user multiple-input multiple-output detection method and apparatus, an electronic device, and a computer-readable storage medium. The method includes: in a case where it is determined that received data includes data for first user equipment and data for at least one second user equipment, determining a first detection method according to a modulation mode of the first user equipment ( 100 ); and performing multi-user joint detection on the received data with the first detection method ( 101 ).

Inventors

Gang Wu
Junling Zhang

Assignees

SANECHIPS TECHNOLOGY CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20220321
Priority Date: 20210531

Claims (13)

1 . A multi-user multiple-input multiple-output detection method applicable to first user equipment, comprising: in a case where it is determined that received data includes data for the first user equipment and data for at least one second user equipment, determining a first detection method according to a modulation mode of the first user equipment; and performing multi-user joint detection on the received data with the first detection method, wherein determining the first detection method according to the modulation mode of the first user equipment comprises: in a case where the modulation mode of the first user equipment is a low modulation mode, determining that the first detection method is a detection method of Sphere Decoding-low modulation mode, wherein in a process of performing the multi-user joint detection on the received data with the first detection method, the modulation mode of the at least one second user equipment is set to be the same as the modulation mode of the first user equipment; and in a case where the modulation mode of the first user equipment is a high modulation mode, determining that the first detection method is a Minimum Mean Square Error detection method.
2 . The multi-user multiple-input multiple-output detection method of claim 1 , further comprising: in a case where it is determined that the received data merely includes the data for the first user equipment, performing single-user detection on the data for the first user equipment in the received data with a second detection method.
3 . The multi-user multiple-input multiple-output detection method of claim 1 , wherein the received data including the data for the first user equipment and the data for the at least one second user equipment is determined by: determining that a first target ratio is less than or equal to a first preset threshold; wherein the first target ratio is a ratio of Reference Signal Received Power of the first user equipment to a sum of Reference Signal Received Power of the at least one second user equipment.
4 . The multiple-user multiple-input multiple-output detection method of claim 3 , before determining whether the first target ratio is less than or equal to the first preset threshold, further comprising: detecting a channel correlation in a case where the channel correlation is allowed to be detected; and determining the first preset threshold according to the detected channel correlation.
5 . The multiple-user multiple-input multiple-output detection method of claim 4 , wherein determining the first preset threshold according to the detected channel correlation comprises: according to a preset first corresponding relationship between channel correlations and first preset thresholds, determining the first preset threshold corresponding to the detected channel correlation.
6 . The multiple-user multiple-input multiple-output detection method of claim 3 , before determining whether the first target ratio is less than or equal to the first preset threshold, further comprising: in a case where a channel correlation is not allowed to be detected, acquiring respective second preset thresholds corresponding to different channel correlations; and determining the first preset threshold according to the respective second preset thresholds corresponding to the different channel correlations.
7 . The multi-user multiple-input multiple-output detection method of claim 6 , wherein determining the first preset threshold according to the respective second preset thresholds corresponding to the different channel correlations comprises: determining an average value of the respective second preset thresholds corresponding to the different channel correlations as the first preset threshold.
8 . The multi-user multiple-input multiple-output detection method of claim 1 , wherein the received data including the data for the first user equipment and the data for the at least one second user equipment is determined by: determining that a second target ratio is greater than or equal to a third preset threshold; wherein the second target ratio is a ratio of a sum of Reference Signal Received Power of the at least one second user equipment to Reference Signal Received Power of the first user equipment.
9 . The multiple-user multiple-input multiple-output detection method of claim 1 , wherein the low modulation mode is a modulation mode with a modulation order less than or equal to a fourth preset threshold.
10 . The multiple-user multiple-input multiple-output detection method claim 1 , wherein the high modulation mode is a modulation mode with a modulation order greater than a fourth preset threshold.
11 . An electronic device, comprising: at least one processor; and a memory having stored thereon at least one program which, when executed by the at least one processor, implements the multi-user multiple-input multiple-output detection method of claim 1 .
12 . A non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the multi-user multiple-input multiple-output detection method of claim 1 .
13 . A multiple-user multiple-input multiple-output detection apparatus, comprising: a selector configured to determine, in a case where it is determined that received data comprises data for first user equipment and data for at least one second user equipment, a first detection method according to a modulation mode of the first user equipment; and a detector configured to perform multi-user joint detection on the received data with the first detection method, wherein the selector is further configured to: in a case where the modulation mode of the first user equipment is a low modulation mode and the first user equipment cannot acquire modulation mode of the at least one second user equipment, determine that the first detection method is a detection method of Sphere Decoding-low modulation mode, wherein in a process of performing the multi-user joint detection on the received data with the first detection method, the modulation mode of the at least one second user equipment is set to be the same as the modulation mode of the first user equipment; and in a case where the modulation mode of the first user equipment is a high modulation mode, determine that the first detection method is a Minimum Mean Square Error detection method.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present disclosure claims the priority to Chinese Patent Application No. 202110606044.9 filed on May 31, 2021, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD The present disclosure relates to the technical field of communications, and in particular, to a multi-user multiple-input multiple-output (MIMO) detection method and apparatus, an electronic device, and a computer-readable storage medium. BACKGROUND The MIMO technology is one of important technologies for wireless communication systems to achieve high spectral efficiency to improve system capacity, and is also an important feature of systems of the New Radio technology (NR) of the 5th Generation Mobile Communication Technology (5G). In order to meet requirements of International Mobile Telecommunications-Advanced (IMT-Advanced) of the International Telecommunication Union (ITU) on the high spectral efficiency of the systems, in addition to adopting the single-user MIMO technology to increase the spectral efficiency, 5G NR also adopts the multi-user MIMO technology, that is, a plurality of parallel data streams are sent to different User Equipment (UE) under same time-frequency resources, or different UEs send data to a gNB using the same time-frequency resources. Since a distance between users in the multi-user MIMO technology is larger than that between antennas in the single-user MIMO technology, it is easier to realize parallel transmission of multiple data streams in the multi-user MIMO technology, so that the spectral efficiency can be further increased. Correspondingly, a multi-user MIMO detection technique of 5G NR becomes one of the important technologies that determine performance of 5G NR receivers. Conventional MIMO detection techniques include Minimum Mean Square Error (MMSE) detection and Sphere Decoding (SD) detection. The SD detection can approach the optimal performance in terms of performance, i.e., performance of a Maximum Likelihood (ML) algorithm, while complexity of the SD detection is much lower than that of the ML algorithm. Therefore, the SD detection is often selected as a single-user MIMO detection technique. The SD detection includes two parts, i.e., QR decomposition preprocessing and search of entities, the search is to calculate metrics according to constellation-point symbols corresponding to a modulation mode of each parallel data stream and perform comparison. Complexity of the MMSE detection is much lower than that of the SD detection, and performance of the MMSE detection can be equal to that of the SD detection in certain scenes, so that there is still room for application of the MMSE detection. The MMSE detection is to perform detection with no need to acquire the modulation modes of the parallel data streams. A modulation mode of a multi-antenna parallel data stream in a single-user MIMO scene is a modulation mode configured for a local user, and the SD detection can achieve detection on each data stream. However, in a downlink multi-user MIMO scene of 5G NR, since the local user cannot acquire modulation modes of other users, the local user cannot perform SD detection according to the modulation mode configured for each data stream as in the case of the single-user MIMO scene. According to the related technology, a processing flow of a transmitting terminal needs to be changed, that is, Block Diagonalization is adopted for precoding to eliminate interference between the users, and then an MMSE algorithm is adopted at a receiving terminal, that is, the transmitting terminal and the receiving terminal need to jointly perform processing, which is complex to implement. SUMMARY Embodiments of the present disclosure provide a multi-user MIMO detection method and apparatus, an electronic device, and a computer-readable storage medium. In a first aspect, an embodiment of the present disclosure provides a multi-user MIMO detection method applicable to first user equipment, including: in a case where it is determined that received data includes data for the first user equipment and data for at least one second user equipment, determining a first detection method according to a modulation mode of the first user equipment; and performing multi-user joint detection on the received data with the first detection method. In a second aspect, an embodiment of the present disclosure provides an electronic device, including: at least one processor; and a memory having stored thereon at least one program which, when executed by the at least one processor, implements the above multi-user MIMO detection method. In a third aspect, an embodiment of the present disclosure provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above multi-user MIMO detection method. In a third aspect, an embodiment of the present disclosure provides a multiple-user MIMO detection apparat