Method and device for time division duplex configuration in carrier aggregation

A technology of carrier aggregation and time division duplexing, which is applied in the field of communication, can solve problems such as control signaling influence and interference, achieve flexible resource scheduling, and improve transmission efficiency

Active Publication Date: 2016-05-25
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But if this intra-band carrier aggregation specification is applied to inter-band carrier aggregation, the following problems will arise: 1) Uplink / downlink (UL / DL) interference problem, which can be ignored in inter-band aggregation because both There is a huge guard band between two frequency bands; 2) CC-specific TDD configuration will have an impact on control signaling
Therefore, using intra-band carrier aggregation supported in Rel-10 over inter-band carrier aggregation is not a satisfactory solution

Method used

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  • Method and device for time division duplex configuration in carrier aggregation
  • Method and device for time division duplex configuration in carrier aggregation
  • Method and device for time division duplex configuration in carrier aggregation

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Embodiment Construction

[0044] The specific embodiments of the present invention will be described in detail below with reference to the drawings. It should be pointed out that the present invention performs transmission between User Equipment (UE) and Node B, such as evolved Node B (eNb). UE to eNb communication is called uplink transmission, and eNb to UE communication is called downlink transmission.

[0045] image 3 A flowchart of a method according to an aspect of the present invention is shown. Such as image 3 As shown, according to one aspect of the present invention, there is provided a method 100 used in inter-band carrier aggregation including a primary cell Pcell and a secondary cell Scell. The method 100 includes: in step 110, receiving a time division duplex TDD representing a Pcell Configure the first information; in step 120, receive the second information representing the TDD configuration of the Scell; in step 130, send an acknowledgment / negative ACK / NACK message according to the fir...

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Abstract

An embodiment of the invention discloses a method and equipment for carrier aggregation in frequency bands of cells including a Pcell (primary cell) and a Scell (secondary cell). The method includes receiving first information for indicating time division duplexing configuration of the Pcell; receiving second information indicating TDD configuration of the Scell; and sending or receiving acknowledgement / negative acknowledgement (ACK / NACK) message according to the first information and the second information. By the method and the equipment for time division duplexing configuration in carrier aggregation, empty frames or 'fake frames' in the Scell can be avoided, transmission efficiency is then improved, and resource dispatching is flexible.

Description

Technical field [0001] The present invention relates to the communication field, and more specifically, to the time division duplex configuration in carrier aggregation (CA). Background technique [0002] Carrier aggregation technology is an important feature of the LTE-Advanced standard and a key technology to realize the 100M bandwidth operation of the LTE-Advanced system, but it also brings many challenges to the LTE-Advanced air interface protocol. In order to support the carrier aggregation technology, LTE-Advanced needs to enhance the previous LTE air interface protocol in many aspects. [0003] LTE-Advanced requires a peak rate of 1Gbit / s downstream and 500Mbit / s upstream within a 100MHz bandwidth. In order to work within such a wide bandwidth, LTE-Advanced introduced carrier aggregation technology. Carrier aggregation can serve the UE together by integrating several discrete frequency bands. Considering the backward compatibility with LTE, LTE-Advanced introduces the con...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W72/12H04L1/06
Inventor 孙芳蕾杨涛张晓博刘瑾
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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