Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of empty channel detection method and node device

A technology of channel detection and node equipment, applied in the direction of digital transmission system, baseband system, electrical components, etc., can solve the problem of low utilization rate of unlicensed carrier resources, achieve the effect of reducing transmission delay and improving utilization rate

Active Publication Date: 2020-12-11
ZTE CORP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide an empty channel detection method and node equipment to solve the problem of low resource utilization on existing unlicensed carriers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of empty channel detection method and node device
  • A kind of empty channel detection method and node device
  • A kind of empty channel detection method and node device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides a method for detecting an empty channel, which mainly includes the following operations:

[0051] The node device performs CCA detection on the full bandwidth of the unlicensed carrier channel for the first time. If the CCA detects that the full bandwidth of the unlicensed carrier channel is busy, it divides the full bandwidth of the unlicensed carrier channel into two or two segments for the first time according to the preset division method above sub-bandwidth;

[0052] When the fallback time of CCA detection failure arrives, the node device performs CCA detection on each divided sub-bandwidth. If CCA detects that all sub-bandwidths are busy, the divided sub-bandwidths will be divided twice according to the preset division method. Divide into two or more sub-bandwidths, and after the CCA detection failure fallback time reaches again, perform CCA detection on each sub-bandwidth divided twice until CCA detects that any sub-bandwidth is idle, or ...

Embodiment 2

[0089] This embodiment provides a node device, including at least a first unit and a second unit.

[0090] The first unit mainly performs CCA detection on the full bandwidth of the unlicensed carrier channel, and performs CCA detection on the sub-bandwidths divided by the second unit after the fallback time of the CCA detection failure, until CCA detects that any sub-bandwidth is idle state, or the number of CCA cycle detection reaches the maximum value, then exit the CCA cycle detection;

[0091] The second unit, when the CCA detects that the full bandwidth of the unlicensed carrier channel is in a busy state, divides the full bandwidth of the unlicensed carrier channel into two or more sub-bandwidths for the first time according to the preset division method, and when the CCA detects that the full bandwidth of the unlicensed carrier channel has been busy. When each of the divided sub-bandwidths is in a busy state, the divided sub-bandwidths are divided into two or more sub-b...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an empty channel detection method and node equipment, and relates to the long-term evolution system LTE in the 3GPP family standard. The method disclosed in the present invention includes: if the first CCA detection of the node device finds that the full bandwidth of the unlicensed carrier channel is in a busy state, then divide the full bandwidth of the unlicensed carrier channel into two or more segments for the first time according to a preset division method Sub-bandwidth; if the node device conducts CCA detection again and finds that all sub-bandwidths are in a busy state, then divide each divided sub-bandwidth into two or more sub-bandwidths according to the preset division method, and continue Carry out CCA detection until the CCA detects that any sub-bandwidth is in an idle state, or the number of CCA cycle detection reaches the maximum value, then exit the CCA cycle detection. The invention also discloses a node device. The technical solution of the present application can improve the utilization rate of resources and reduce the transmission delay of data packets.

Description

technical field [0001] The present invention relates to the long-term evolution system LTE (including the network side NW and the terminal side UE) in the 3GPP family standard, and in particular relates to a dynamic detection and resource usage scheme under fixed bandwidth configuration of an unlicensed carrier cell. Background technique [0002] figure 1 It is a schematic diagram of the system architecture of the long-term evolution system (LTE, Long Term Evolution) in the 3GPP cellular mobile family standard, including: a mobile management entity (MME, Mobility Management Entity) on the core network side, a serving gateway (SGW, Serving GetWay), wireless The user equipment on the access network side is called a terminal (UE, UserEquipment) and a base station (eNodeB, referred to as eNB). There is a Uu air interface or an air interface between them, and an S1-MME (S1for the control plane) interface, the S1-U interface between the eNB and the SGW, and the X2-U (X2-User plan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00
CPCH04W74/0808H04W72/542H04W16/14H04W72/04H04L25/00
Inventor 杨立
Owner ZTE CORP