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Method and apparatus for beamspace processing based on multiple beamspace bases

A beam and space technology, applied in the direction of space transmit diversity, diversity/multi-antenna system, radio transmission system, etc.

Pending Publication Date: 2021-09-17
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, standard beamspace transformation methods via S-DFT do not always provide sufficient dimensionality reduction

Method used

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  • Method and apparatus for beamspace processing based on multiple beamspace bases
  • Method and apparatus for beamspace processing based on multiple beamspace bases
  • Method and apparatus for beamspace processing based on multiple beamspace bases

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Embodiment Construction

[0019] The following description describes methods and systems for efficiently processing radio channel estimation in beam space. In the following description, numerous specific details are set forth, such as logical implementations, operation codes (opcodes), means for specifying operands, resource partitioning / sharing / replication implementations, types and interrelationships of system components, and logical partitioning / Selections are combined to provide a more comprehensive understanding of the invention. However, it will be appreciated by those skilled in the art that the present invention may be practiced without these specific details. In other instances, control structures, gate level circuits and full software instruction sequences have not been shown in detail in order not to obscure the invention. Using the included description, one of ordinary skill in the art will be able to implement the proper function without undue experimentation.

[0020] References in the...

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Abstract

A method and apparatus for beamspace processing in a radio access node are proposed. A channel estimate, which characterizes a radio channel between the antenna elements of an antenna array and a user equipment for a given time and a given frequency, is transformed using multiple distinct sets of spatial orthonormal basis functions to obtain transformed channel estimates. Each one of the distinct sets of spatial orthonormal basis functions defines a respective one of beamspace transformations. Based on measures of quality of beamspace transformation, a set of spatial orthonormal basis functions is selected from the sets of the spatial orthonormal basis functions to satisfy a beamspace reduction criteria for the radio channel. Data streams are encoded, based on a selected transformed channel estimate, into encoded data streams. The encoded data streams are then transmitted through the antenna elements of the antenna array.

Description

technical field [0001] Embodiments of the present invention relate to the field of wireless communications; and more particularly to beam space processing based on multiple beam space bases. Background technique [0002] Transmission points of wireless communication networks are increasingly equipped with advanced antenna systems (AAS). These antenna systems increase the capacity and / or coverage of existing wireless systems by adding antenna arrays. This enables the simultaneous transmission of parallel data streams between the base station and the users, so-called multiple-input multiple-output (MIMO) transmission. In some cases, the main desired effect is enhanced coverage by exploiting the high beamforming gain of the new AAS system. [0003] Massive Multiple-Input Multiple-Output (MIMO) is a technique used in advanced antenna systems to increase data transmission capacity. Massive MIMO systems enable the transmission of multiple data streams using the same time and fr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04B7/0695
Inventor 阿姆鲁·厄尔科一钱拉德·班图贾格迪什·吉米雷
Owner TELEFON AB LM ERICSSON (PUBL)