Methods and entities in tdd radio communication

A radio and radio interface technology, applied in wireless communication, electrical components, duplex signal operation, etc., can solve problems such as system performance degradation and increased filter insertion loss

Active Publication Date: 2020-10-23
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to use one shared TDD filter to meet different requirements, the worst case of out-of-band attenuation needs to be considered, which causes increased filter insertion loss and generates unnecessary system performance degradation

Method used

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  • Methods and entities in tdd radio communication
  • Methods and entities in tdd radio communication
  • Methods and entities in tdd radio communication

Examples

Experimental program
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Embodiment Construction

[0020] Hereinafter, embodiments herein will be described in detail with reference to the accompanying drawings showing the embodiments. These embodiments herein may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals refer to like elements throughout.

[0021] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" 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 "comprises", "comprising", "includes" and / or "including" when used herein designate the presence of stated features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or m...

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PUM

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Abstract

Embodiments provide a radio network entity for improving filtering performance in a time-division duplex radio communication system and a method thereof, the radio network entity comprising: a first filter configured to transmit a filter to a device in the radio communication system via a radio interface performing a first type of filtering on signals transmitted or received from a device in a radio communication system, wherein common filtering requirements for transmission and reception are met; a second filter configured to perform a second type of filtering on signals transmitted to the device filtering, wherein additional filtering requirements for transmission are met in addition to meeting the common filtering requirements; and a third filter configured to perform a third type of filtering on signals received from the device, wherein in addition to meeting the common filtering requirements In addition, it also meets the additional filtering requirements for reception.

Description

technical field [0001] The present technology relates generally to radio communications, and in particular to radio network entities for improving filtering performance in time division duplex radio communications systems and to methods thereof. Background technique [0002] The cellular technology specified by the 3rd Generation Partnership Project (3GPP) is the most widely deployed in the world. A new phase of research and development in 3GPP is the evolution of 3G to an evolved radio access technology called Long Term Evolution (LTE). In LTE, different communication modes can be used for radio nodes in a cellular network such as frequency division duplex (FDD), time division duplex (TDD) and half duplex. [0003] In a TDD radio communication system, uplink and downlink communications between a radio base station and user equipment use the same frequency channel (i.e., carrier) but different time slots to separate reception and transmission, i.e., reception and transmissi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W88/06H04W88/08
CPCH04B1/54H04B1/56H04L5/14
Inventor 苏又平李鸣
Owner TELEFON AB LM ERICSSON (PUBL)
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