Check patentability & draft patents in minutes with Patsnap Eureka AI!

Adaptive co-phasing for beamforming using co-phasing matrices for wireless communications

A beamforming and co-phase technology, applied in radio transmission systems, diversity/multi-antenna systems, polarization/direction diversity, etc., can solve problems such as unbalanced transmission layer power or gain, unbalanced transmission layer, poor performance, etc.

Active Publication Date: 2021-03-19
TELEFON AB LM ERICSSON (PUBL)
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A problem with this arrangement may be that the co-phase is fixed and may cause an imbalance between the two transmission layers, such as power or gain imbalance between the transmission layers
For example, is optimized for the first transport layer but not the second, so after applying the co-phase matrix, the first transport layer may have better performance characteristics (e.g., gain) than the second transport layer, resulting in the overall performance of Difference

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Adaptive co-phasing for beamforming using co-phasing matrices for wireless communications
  • Adaptive co-phasing for beamforming using co-phasing matrices for wireless communications
  • Adaptive co-phasing for beamforming using co-phasing matrices for wireless communications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present disclosure provides, at least in part, by providing a co-phase method and arrangement that may be transparent to a wireless device (eg, transparent in resource structure (such as a physical resource block (PRB) or granularity)) and may be compatible with the use of wireless communication Adaptive phases for use with wireless devices operating on standards such as 3GPP Release 13 and earlier, to help solve at least some of the problems of existing systems. For example, semi-open universals, described below, suffer from stationary universals, which can lead to one or more problems.

[0035] semi-open universal phase

[0036] In 3GPP, the semi-open loop ("semiOpenLoop") is specifically described for double-layer transmission as follows:

[0037] For two-layer transport:

[0038]

[0039] in is the co-phase factor determined by the network node (eg, base station, eNB, gNB, etc.) for the ith symbol vector from the transport layer mapping. That is to say: ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A network node, wireless device and methods for co-phasing for beamforming using co-phasing matrices for wireless communications are provided. In one example, a network node for co-phasing in beamforming for transmissions is provided. The network node includes processing circuitry including a processor and a memory where the memory contains instructions executable by the processor to configure thenetwork node to: obtain co-phasing information associated with a wireless device, generate at least two co-phasing matrices based on the co-phasing information, and apply the at least two co-phasingmatrices to at least two resource structures.

Description

technical field [0001] Relates to wireless communications, in particular the application of cophasing to beamformed transmissions through active antenna systems. Background technique [0002] Active Antenna System (AAS), one of several technologies included in the Fourth Generation Long Term Evolution (4G LTE) and Fifth Generation New Radio (5GNR) standards, uses Full Dimensional Multiple-Input Multiple-Output (FD-MIMO ) and massive MIMO to help improve the performance and capacity of wireless networks. Such as figure 1 As shown, some AAS systems consist of a two-dimensional array of antenna elements with M rows, N columns, and K polarizations (where K=2 in the case of cross-polarization). [0003] The codebook-based precoding in AAS is based on a set of predefined precoding matrices W. The precoding matrix indicator (PMI) can be selected by the wireless device with the downlink channel state information reference signaling (DL CSI-RS), and can also be selected by the net...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0452
CPCH04B7/0452H04B7/0617H04B7/10H04B7/0469H04B7/0682
Inventor 强永全A·阿法纳龙建国A·诺亚杜昭正
Owner TELEFON AB LM ERICSSON (PUBL)
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com