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LAA interception resource distribution method and device

A signaling and carrier technology, applied in the field of communication for unlicensed spectrum, can solve the problems of indetermination of physical layer data redundancy version, conflict, etc.

Active Publication Date: 2016-06-01
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The base station cannot determine whether the UE has performed uplink transmission in the scheduling subframe and the base station may not be able to determine the redundant version of the physical layer data sent by the UE in the scheduling subframe, that is, LBT and uplink synchronous HARQ will conflict

Method used

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  • LAA interception resource distribution method and device
  • LAA interception resource distribution method and device
  • LAA interception resource distribution method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1 illustrates the flow chart of uplink transmission on the LAA carrier, as shown in the appendix. figure 1 shown. attached figure 1 , the base station N1 maintains the serving cell of UEU2, wherein the steps identified in block F0 and block F1 are optional.

[0075] For the base station N1, the first signaling is sent in step S11; in step S12, it is determined whether the target UE sends a wireless signal in the first subframe of the first carrier, and if it is determined that the target UE sends a wireless signal, in step S120, the first signaling is sent in the first subframe of the first carrier. The communication symbol is received on the first subframe of the carrier, and if it is determined that the target UE does not send a wireless signal, it will give up receiving the communication symbol on the first subframe of the first carrier in step S121.

[0076] For UEU2, the first signaling is received in step S21; in step S22, a listening operation is per...

Embodiment 2

[0082] Embodiment 2 illustrates the subframe timing diagram for LBT operation on the target bandwidth on the LAA carrier, as attached figure 2 shown. attached figure 2 , a bold square identifies a subframe.

[0083] The base station first sends the first signaling to the UE in subframe #1 of the second carrier, where the first signaling indicates the target bandwidth for performing the listening operation. The base station then sends the second signaling to the UE in the subframe #2 of the second carrier, and the second signaling schedules the frequency band in the subframe #4 of the first carrier, that is, the first frequency band. The UE performs a listening operation in subframe #3 (ie, the previous subframe of subframe #4) to determine whether to transmit a wireless signal in subframe #4 of the first carrier, and if it determines to transmit a wireless signal, then on the first carrier The communication symbol is sent on the subframe #4 of the first carrier; if it is ...

Embodiment 3

[0087] Embodiment 3 illustrates a schematic diagram of the target bandwidth on the LAA carrier, as attached image 3 shown. attached image 3 , the thick-line boxed rectangle identifies a subcarrier group.

[0088]The base station sends first signaling to the UE, where the first signaling indicates a target bandwidth for performing a listening operation. The target bandwidth includes K1 sub-carrier groups that are discontinuous in the frequency domain (respectively image 3 The index 1-K1 in the index 1-K1 is marked with a rectangular rectangle), each subcarrier group includes K2 consecutive subcarriers in the frequency domain, and both the K1 and the K2 are positive integers. The UE then performs a listening operation on the target bandwidth of the first carrier to determine whether to send a wireless signal in the first subframe of the first carrier, and if it determines to send a wireless signal, send a communication on the first subframe of the first carrier symbol, if...

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Abstract

The present invention provides an LAA interception resource distribution method and device. In the step 1, a UE receives a first signaling, and the first signaling is configured to execute the target bandwidth of interception operation; in the step 2, the UE executes the interception operation on the target bandwidth of the a first carrier to determine whether the first subframe of the first carrier sends wireless signals or not, if the first subframe of the first carrier sends wireless signals, communication symbols are sent on the first subframe of the first carrier, and if the first subframe of the first carrier does not send wireless signals, the first subframe of the first carrier maintains zero sending power. The first signaling is a high signaling, and the first carrier is arranged at a non-authoritative frequency spectrum. The target bandwidth is the subset of the first carrier bandwidth. The LAA interception resource distribution method and device allow an LTE LAA to be compatible with a traditional UL HARQ scheme after introducing an LBT technology, and complex standard changing is avoided.

Description

technical field [0001] The present invention relates to a solution using unlicensed spectrum communication in a wireless communication system, and in particular, to a communication method and device for unlicensed spectrum (Unlicensed Spectrum) based on LTE (Long Term Evolution, Long Term Evolution). Background technique [0002] In the traditional 3GPP (3rdGenerationPartnerProject, 3rd Generation Partnership Project) LTE system, data transmission can only occur on the licensed spectrum. However, with the sharp increase in traffic volume, especially in some urban areas, the licensed spectrum may be difficult to meet the traffic volume. demand. The 62nd plenary meeting of 3GPPRAN discussed a new research topic, namely the research on unlicensed spectrum integration (RP-132085), the main purpose is to study the non-standalone deployment of LTE on unlicensed spectrum, the so-called Non-standalone -standalone means that the communication on the unlicensed spectrum is to be asso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04L5/00
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD