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Method and device for resource block grouping beamforming

A beamforming and resource block group technology, applied in the directions of space transmit diversity, diversity/multi-antenna systems, electrical components, etc., can solve cumbersome problems and achieve the effect of increasing signal energy and reducing interference

Active Publication Date: 2018-08-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The CoMP transmission method used in this method is to separate the precoding estimation from the resource allocation (divided into two independent steps), which is relatively cumbersome

Method used

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  • Method and device for resource block grouping beamforming
  • Method and device for resource block grouping beamforming
  • Method and device for resource block grouping beamforming

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Abstract

The invention discloses a method and device for resource block grouping and multi-antenna beamforming. A base station groups all resource blocks under the current transmission bandwidth of adjacent cells, maps the resource blocks to beams, and obtains reference signal selection based on user measurements. CoMP cooperative users, the base station exchanges CoMP cooperative user information with adjacent base stations, and performs joint beamforming according to the corresponding resource blocks; the method of the present invention changes the original interference cell into a signal transmitting cell, and the signal energy increases , the interference is reduced and the gain obtained is obvious. On the other hand, adjacent resource blocks are divided into different resource block groups, thereby bringing about a certain frequency diversity gain.

Description

technical field The present invention relates to the field of wireless communication, in particular to a resource block grouping beamforming method and device. Background technique In a 3Gpp Long Term Evolution (LTE) system, during data transmission, uplink / downlink time-frequency domain physical resources are formed into resource blocks (Resource Blocks, RBs), which are scheduled and allocated as physical resource units. In the case of a normal cyclic prefix (Normal CP), a physical resource block (Physical Resource Block, PRB) contains 12 consecutive subcarriers in the frequency domain, and contains 7 consecutive OFDM ( Orthogonal Frequency Division Multiplexing (OFDM) symbol, that is, the frequency domain width is 180 kHz, and the time length is 0.5 ms. Coordinated multiple point (CoMP) transmission technology utilizes multiple cell transmit antennas for cooperative transmission to achieve higher capacity and reliable transmission of wireless links at the cell edge, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/02H04B7/0413H04W72/08H04W72/54
Inventor 王衍文金涛刘娟陈东丽
Owner ZTE CORP
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