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CN-122029752-A - Apparatus, method, device and computer readable medium for large scale multiple input multiple output

CN122029752ACN 122029752 ACN122029752 ACN 122029752ACN-122029752-A

Abstract

Devices, methods, apparatuses, and computer-readable media for large-scale multiple-input multiple-output are disclosed. An example communication device for massive multiple-input multiple-output may include at least one processor and at least one memory. The at least one memory may store instructions that, when executed by the at least one processor, cause the communication device to perform at least constructing a mapping between traffic load thresholds and antenna elements to be muted, wherein the mapping is constructed by dividing an antenna array of the communication device into four horizontally and vertically symmetric quadrants, determining to mute one or more antenna elements in one of the four quadrants based on traffic load, and determining to mute antenna elements in the other three quadrants that mirror the one or more antenna elements determined to be muted in the one quadrant.

Inventors

  • XU YANG
  • XU XILIANG

Assignees

  • 诺基亚通信(上海)股份有限公司

Dates

Publication Date
20260512
Application Date
20230922

Claims (16)

  1. 1. A communications device for large-scale multiple-input multiple-output, comprising: at least one processor, and At least one memory storing instructions that, when executed by the at least one processor, cause the communication device to at least perform: Constructing a mapping between each traffic load threshold and each antenna element to be muted, wherein the mapping is constructed in the following manner: Dividing an antenna array of the communication device into four quadrants of horizontal and vertical symmetry; Determining to mute one or more antenna elements in one of the four quadrants based on the traffic load, and Muting is determined for an antenna element of the other three quadrants that is a mirror image of the one or more antenna elements determined to be muted in the one quadrant.
  2. 2. The communication device of claim 1, wherein the instructions, when executed by the at least one processor, cause the communication device to further perform: a traffic load threshold number S is determined based on the number of antenna elements in the antenna array divided by four.
  3. 3. The communication device of claim 2, wherein the construction of the mapping comprises: dividing the full buffer service load of the communication device into S service load levels by the S service load thresholds; Dividing the nominal transmit power of the communication device into S transmit power steps corresponding to the S traffic load levels and corresponding to the antenna elements to be muted, and Mapping each traffic load threshold to each antenna element to be muted.
  4. 4. A communication device as claimed in any one of claims 1 to 3, wherein determining to mute the one or more antenna elements in the one quadrant is performed in such a way that after determining to mute at least one antenna element, it is determined to mute one adjacent antenna element of the at least one antenna element if the one adjacent antenna element and the at least one antenna element of the respective adjacent antenna elements of the at least one antenna element generate a maximum sidelobe.
  5. 5. A communication device as claimed in any one of claims 1 to 4, wherein the mapping is in the form of a look-up table or a mapping table.
  6. 6. The communication device of any of claims 1 to 5, wherein the communication device is a network device.
  7. 7. The communication device of any of claims 1 to 5, wherein the communication device is a user device.
  8. 8. A method performed by a communication device for massive multiple-input multiple-output, comprising: Constructing a mapping between each traffic load threshold and each antenna element to be muted, wherein the mapping is constructed in the following manner: Dividing an antenna array of the communication device into four quadrants of horizontal and vertical symmetry; Determining to mute one or more antenna elements in one of the four quadrants based on the traffic load, and Muting is determined for an antenna element of the other three quadrants that is a mirror image of the one or more antenna elements determined to be muted in the one quadrant.
  9. 9. The method of claim 8, further comprising: a traffic load threshold number S is determined based on the number of antenna elements in the antenna array divided by four.
  10. 10. The method of claim 9, wherein the constructing of the map comprises: dividing the full-buffer business load of the communication equipment into S business load levels through the S business load thresholds; dividing the nominal transmit power of the communication device into S transmit power steps corresponding to S traffic load levels and corresponding to the antenna elements to be muted, and Mapping the traffic load threshold to the antenna element to be muted.
  11. 11. The method of any of claims 8 to 10, wherein determining muting the one or more antenna elements in the one quadrant is performed in such a way that after determining muting at least one antenna element, it is determined to mute one neighboring antenna element of the at least one antenna element if the one neighboring antenna element and the at least one antenna element of the respective neighboring antenna elements of the at least one antenna element generate a maximum sidelobe.
  12. 12. The method of any one of claims 8 to 11, wherein the mapping is in the form of a look-up table or a mapping table.
  13. 13. The method of any of claims 8 to 12, wherein the communication device is a network device.
  14. 14. The method of any of claims 8 to 12, wherein the communication device is a user equipment.
  15. 15. An apparatus as a communication device for massive multiple-input multiple-output, comprising means for performing the method of any of claims 8 to 14.
  16. 16. A computer readable medium comprising program instructions which, when executed by a communications device for massive multiple-input multiple-output, cause the communications device to perform at least the method of any one of claims 8 to 14.

Description

Apparatus, method, device and computer readable medium for large scale multiple input multiple output Technical Field Various example embodiments relate to apparatuses, methods, devices, and computer-readable media for massive multiple-input multiple-output (MIMO). Background Massive MIMO benefits significantly from the use of arrays with a large number of antennas, which may also lead to significant increases in energy/power consumption. Since traffic load varies significantly with time and space, the high peak capacity provided by massive MIMO is not always required. Antenna muting is a technique to reduce antenna array size to reduce energy/power consumption when traffic load is low. Assuming that the antenna array in massive MIMO is an array of (M, N, P), where M is the number of rows, N is the number of columns, and P is the number of polarizations, if the granularity for antenna muting is the upper half array or the lower half array, when one of the half arrays is muted under low traffic load, it will change the vertical beam width and make the beam forming gain asymmetric. If the granularity for antenna muting is per row or per column, the muting granularity is still unsatisfactory due to traffic load quantization errors up to half the granularity. Disclosure of Invention The following presents a simplified summary of various exemplary embodiments in order to provide a basic understanding of some aspects of the various embodiments. It should be noted that this summary is not intended to identify key features of each essential element or to define the scope of the embodiments, and its sole purpose is to introduce a selection of concepts in a simplified form as a prelude to the more detailed description that is presented below. In a first aspect, a communication device for massive multiple-input multiple-output is disclosed. The communication device may include at least one processor and at least one memory. The at least one memory may store instructions that, when executed by the at least one processor, cause the communication device to at least perform constructing a mapping between traffic load thresholds and antenna elements to be muted, wherein the mapping is constructed by dividing an antenna array of the communication device into four horizontally and vertically symmetric quadrants, determining to mute one or more antenna elements in one of the four quadrants based on traffic load, and determining to mute antenna elements in the other three quadrants that mirror one or more antenna elements determined to be muted in the one quadrant. In a second aspect, a method performed by a communication device for massive multiple-input multiple-output is disclosed. The method may include constructing a mapping between traffic load thresholds and antenna elements to be muted, wherein the mapping is constructed by dividing an antenna array of the communication device into four quadrants of horizontal and vertical symmetry, determining to mute one or more antenna elements in one of the four quadrants based on traffic load, and determining to mute antenna elements in the other three quadrants that are mirror images of the one or more antenna elements determined to be muted in the one quadrant. In a third aspect, an apparatus is disclosed. The device as a communication device for massive multiple-input multiple-output may comprise means for constructing a mapping between a threshold value of each traffic load and each antenna element to be muted, wherein the mapping is constructed in such a way that an antenna array of the communication device is divided into four horizontally and vertically symmetrical quadrants, muting one or more antenna elements in one of the four quadrants is determined according to the traffic load, and muting one or more antenna elements in the other three quadrants that are mirrored to the one or more antenna elements determined to be muted in the one quadrant is determined. In a fourth aspect, a computer-readable medium is disclosed. The computer readable medium may include program instructions that, when executed by a communication device for massive multiple-input multiple-output, cause the communication device to perform at least constructing a mapping between traffic load thresholds and antenna elements to be muted, wherein the mapping is constructed by dividing an antenna array of the communication device into four horizontally and vertically symmetric quadrants, determining to mute one or more antenna elements in one of the four quadrants based on traffic load, and determining to mute antenna elements in the other three quadrants that mirror the one or more antenna elements determined to be muted in the one quadrant. Other features and advantages of the various exemplary embodiments of the present disclosure will be apparent from the following description of the particular embodiments, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the pr