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A method and device for determining lbt mode, and a method for realizing lbt mode switching

A channel and subframe technology, applied in the field of switching between listening and speaking mode, can solve problems such as unreasonable LBT selection, and achieve the effect of improving efficiency and avoiding waste.

Active Publication Date: 2022-07-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the present invention provides a method and device for realizing LBT mode switching, which clearly defines the LBT mode for channel contention access selection, and can avoid related problems caused by unreasonable LBT selection

Method used

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  • A method and device for determining lbt mode, and a method for realizing lbt mode switching
  • A method and device for determining lbt mode, and a method for realizing lbt mode switching
  • A method and device for determining lbt mode, and a method for realizing lbt mode switching

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Embodiment 1

[0414] It is mentioned in the following embodiments that LBT mode switching can be divided into two types:

[0415] The first category: switching between different LBT mechanisms;

[0416] The second category: switching of parameter sets of different LBT mechanisms within the same LBT mechanism.

[0417] LBT mechanisms include: LBT Cat2 mechanism, LBT Cat4 mechanism, and LBT Cat3 mechanism; wherein, the LBT Cat2 mechanism is an LBT mechanism without random fallback. The LBT mechanism without random backoff can be divided into: LBT Cat2 which performs CCA only once during contention access to the channel and enhanced LBT Cat2 which performs multiple CCA during contention access to the channel. The duration of CCA in the LBT Cat2 mechanism may be 34us, 25us, 20us, 16us, 9us or 4us. The duration of the CCA can be predefined, indicated by the base station, notified by RRC signaling, determined according to different QoS levels, determined according to the priorities of different...

Embodiment 2

[0424] The relevant indication information in this embodiment is the size of the data packet to be transmitted, and determining the LBT mechanism and / or the LBT mechanism parameter set according to the relevant indication information specifically includes:

[0425] Pre-set the size range of data to be transmitted corresponding to each LBT mechanism and / or the LBT mechanism parameter set; according to the size range of data to be transmitted where the size of the data packet to be transmitted is located, select the LBT mechanism and / or LBT mechanism parameter set for channel contention access; in this embodiment, the size interval of data to be transmitted includes: [x1, x2], [x3, x4], [x5, x6], [x7, x8], to be transmitted The data size ranges may partially overlap or do not overlap. Generally, the minimum value of the latter range is less than or equal to the minimum value of the previous range, and the minimum value of the latter range is greater than the minimum value of th...

Embodiment 3

[0429] The relevant indication information in this embodiment is the number of consecutively scheduled subframes. Determining the LBT mechanism and / or the LBT mechanism parameter set according to the relevant indication information is similar to determining the LBT mechanism and / or the LBT mechanism parameter set according to the size of the data packet to be transmitted. Specifically, it includes: :

[0430] The number of consecutively scheduled subframes corresponding to each LBT mechanism and / or the LBT mechanism parameter set is preset; The frame number interval corresponds to the LBT mechanism and / or the LBT mechanism parameter set for the channel contention access. The value principle and overlapping situation of the consecutively scheduled subframe number interval are the same as the to-be-transmitted data size interval. In this embodiment, it is assumed that the consecutively scheduled subframe number interval includes: [m1, m2], [m3, m4], [ m5, m6], [m7, m8].

[043...

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Abstract

The present application discloses a method, an apparatus for determining an LBT mode, and a method for implementing LBT mode switching, including: determining a listen-before-talk (LBT) mechanism or LBT according to relevant indication information and / or priority information and / or measurement quantity information Mechanism parameter set; the transmission device performs channel contention access according to the determined LBT mechanism and / or the LBT mechanism parameter set. The method of the invention realizes the determination of the LBT mode, avoids the waste of channel resources and indication information caused by the unreasonable LBT mode by selecting the LBT mode, and improves the efficiency of channel competition access.

Description

technical field [0001] The present application relates to wireless communication technologies, and in particular, to a method and apparatus for implementing listen-before-talk (LBT) mode switching. Background technique [0002] With the rapid growth of data services, the pressure of data transmission on carriers with licensed spectrum is also increasing. Therefore, sharing the data traffic in licensed carriers through carriers with unlicensed spectrum has become an important evolution direction for subsequent LTE development. . Unlicensed spectrum has the following advantages: no need to purchase, free spectrum resources or low cost; individuals and enterprises can participate in the deployment, with low access requirements; including 5GHz, 2.4GHz and other frequency bands, the available bandwidth is large; it has the characteristics of shared resources, multiple When different systems operate in it or when different operators of the same system operate in it, the spectrum ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14H04W74/08
CPCH04W16/14H04W74/0833H04W74/0808H04W72/23H04W74/0875H04W72/0446H04W76/27
Inventor 杨玲苟伟彭佛才毕峰赵亚军
Owner ZTE CORP
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