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A method and a central base station for interference management in a cellular network

A central base station and cellular network technology, applied in the field of interference management, to achieve the effect of reducing interference

Active Publication Date: 2014-09-03
ERICSSON (CHINA) COMMUNICATION COMPANY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is not enough to manage or reduce the significant and constant disturbances that occur in SDD scenarios

Method used

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  • A method and a central base station for interference management in a cellular network
  • A method and a central base station for interference management in a cellular network
  • A method and a central base station for interference management in a cellular network

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Embodiment Construction

[0017] Embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. These embodiments may, however, be embodied in many different forms and should not be construed as limited to those set forth herein. Like numerals refer to like elements throughout.

[0018] The terminology used herein is for describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the terms "comprising" and / or "comprising" when used herein specify the presence of stated features, integers, steps, operations, units and / or components, but do not exclude the presence or addition of one or more other features, Whole, step, operation, unit, component and / or group thereof.

[0019] Unless defined otherwise, all terms (including technical and scientific term...

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Abstract

The embodiments relate to a method and a base station (110) for interference management in a cellular network (100) employing Space-Division uplink (UL) downlink (DL) Duplexing (SDD). The base station (110) assigns a plurality of Remote Radio Units (RRU) as Tx RRUs operable to dedicatedly transmit downlink signals to a plurality of UEs and Rx RRUs operable to dedicatedly receive uplink signals from the plurality of UEs at the same frequency band and same time as the transmission of the Tx RRUs. The base station then suppresses the interference caused by simultaneous transmission on the same frequency band by using a Tx spatial beamforming weighting matrix and a Rx spatial beamforming weighting matrix. In addition, the base station may perform cross-talk cancellation on the residual interference contained in the received signals by using the knowledge of the downlink traffic data.

Description

technical field [0001] The present technology relates generally to space-division uplink (UL) downlink (DL) duplexing (SDD) in cellular networks, and more particularly to a method and base station for interference management in cellular networks employing SDD . Background technique [0002] Full-duplex wireless communication may be implemented with the degrees of freedom available in the time domain, frequency domain, or other suitable domain. The two most common duplexing schemes used in wireless communication systems are frequency division duplexing (FDD) and time division duplexing (TDD). In FDD, downlink (DL) and uplink (UL) transmissions are separated in the frequency domain. In TDD, DL and UL transmissions are separated in the time domain. [0003] TDD and FDD have their own disadvantages. For example in 3G (e.g. WCDMA) or 4G (e.g. LTE) systems where time-varying asymmetric traffic of data services is dominant, FDD has more advantages than TDD in adjusting UL / DL re...

Claims

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Application Information

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IPC IPC(8): H04W40/02
CPCH04W72/046H04B7/022H04W88/085H04W72/082H04W40/02H04J11/0023H04B7/024H04B7/0617H04B7/0619H04B7/086H04B7/0626H04W72/21H04L5/006H04L5/0069H04L5/0073
Inventor 张战钱雨宋兴华汪剑锋
Owner ERICSSON (CHINA) COMMUNICATION COMPANY LTD
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