Competitive resource determining method and device

A technology for competing resources and determining methods, applied in the field of competing resource determining methods and devices, which can solve problems such as waste of equipment scheduling resources and affecting equipment access performance, and achieve the effect of reducing waste and increasing access probability

Active Publication Date: 2017-02-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method and device for determining competing resources to at least solve the problem i

Method used

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  • Competitive resource determining method and device
  • Competitive resource determining method and device
  • Competitive resource determining method and device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0184] Preferred embodiment 1

[0185] In this preferred embodiment, stations (including base stations, user equipment (UE), home base stations, and relay stations.) LBT method of frame-based equipment (Frame-based Equipment, referred to as FBE) and load-based equipment (Load-based Equipment) , Referred to as LBE) The LBT method is briefly introduced.

[0186] Figure 5 It is a schematic diagram of the LBT mechanism of the frame-based device FBE according to the preferred embodiment of the present invention, such as Figure 5 As shown, FBE has a fixed transmission frame structure. The channel occupation time and idle period constitute a fixed frame period. The device performs CCA detection during the idle period. When it detects that the channel is idle, it can immediately perform data transmission. Otherwise, CCA detection is performed in the idle period of the next fixed frame period. For European FBE, the channel occupation time is 1ms to 10ms, and the idle period is at least 5...

Example Embodiment

[0188] Preferred embodiment two

[0189] This preferred embodiment provides a detailed description of the frequency domain position determination and adjustment method provided by the present invention when the UE executes CCA in FBE mode each time the UE executes CCA.

[0190] For the FBE mode, the UE executes LBT using the description of FBE in preferred embodiment 1, that is, the initial CCA is executed only once in each frame period. For example, if the frame period is 1 ms, the UE can perform CCA in each subframe. For higher priority services, such as retransmission services or feedback related information, or when the base station schedules multiple UEs to multiplex and transmit in the same subframe, or the UE itself finds that the scheduled RB is smaller than the uplink bandwidth, the LBT method is preferred .

[0191] In this manner, the start time domain position for the UE to execute CCA is a predefined value, which is one CCA duration at the end of the subframe, or one CC...

Example Embodiment

[0212] Preferred embodiment three

[0213] The preferred embodiment illustrates the implementation process of the method for determining and adjusting the CCA frequency domain position provided by the present invention when the UE is scheduled to perform CCA in the LBT mode of LBE.

[0214] The specific process of LBE is as described in the first implementation. The CCA process before data transmission includes multiple CCAs. According to the present invention, the frequency domain positions of the multiple CCAs can be adjusted according to rules or detection results. The specific process is as follows:

[0215] The UE first performs the initial CCA at the scheduled frequency domain resource location, or performs CCA in the virtual bandwidth frequency domain with the center of the scheduled resource as the center. The time domain length of this CCA is 34 microseconds, or 20 microseconds.

[0216] If successful, the second CCA still uses the same CCA frequency range as the first time...

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Abstract

The invention provides a competitive resource determining method and device, and the method comprises the step that equipment determines or adjusts the frequency domain position or frequency domain range of CCA (clear channel assessment) of resource competition, wherein the frequency domain position or frequency domain range is a part of a system bandwidth at a non-authorized carrier wave. The system solves problems that the CCA detection affects the access performance of the equipment and is liable to cause the waste of scheduling resources of the equipment, improves the CCA access probability, and reduces the waste of scheduling resources.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for determining contention resources. Background technique [0002] In the evolution process of Long-Term Evolution (LTE for short), the LTE Rel-13 version started to be researched in September 2014, and one of the important contents is that the LTE system uses an unlicensed carrier to work. This technology will enable the LTE system to use existing unlicensed carriers, greatly enhance the potential spectrum resources of the LTE system, and enable the LTE system to obtain lower spectrum costs. [0003] However, LTE will face many problems when using unlicensed carriers. First, in some countries and regions, there are corresponding control policies for the use of unlicensed spectrum. For example, a device must perform Listen Before Talk (LBT for short, also known as Clear Channel Assessment (CCA)) before using an unlicensed carrier to send data. Data is sen...

Claims

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Application Information

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IPC IPC(8): H04W72/12H04W74/08
CPCH04W72/12H04W74/0816H04W72/0453H04W72/0446H04W72/52
Inventor 李新彩苟伟赵亚军杨玲
Owner ZTE CORP
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