Physical downlink control channel symbol number adaptive method and base station

A technology of physical downlink control and number of symbols, applied in the communication field, can solve problems such as insufficient CCE, high power consumption, expansion of PDCCH symbols, etc.

Active Publication Date: 2017-08-25
CHENGDU TD TECH LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the public network, it is reasonable to use the above-mentioned existing method of setting the number of PDCCH symbols; but in the private network, group paging periodically uses public space CCEs, which consumes high power, and the number of PDCCH symbols often just shrinks. , and because of the lack of CCE due to the arrival of group paging, this scheduling fails, and this scheduling failure leads to the expansion of the number of PDCCH symbols, and after this scheduling, it needs to wait for another preset period to shrink PDCCH symbols, resulting in a reduction in the number of symbols that PDSCH can use before PDCCH symbols shrink
Therefore, using the existing adaptive method for the number of PDCCH symbols, the shrinkage or expansion of the number of PDCCH symbols is not timely, and the accuracy of the number of PDCCH symbols set is poor.

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
  • Physical downlink control channel symbol number adaptive method and base station
  • Physical downlink control channel symbol number adaptive method and base station
  • Physical downlink control channel symbol number adaptive method and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] figure 1 It is a flowchart of a method for adapting the number of PDCCH symbols in Embodiment 1 of the present invention. Such as figure 1 As shown, the method includes the following steps.

[0036] Step 101: Count the number of aperiodic resource element groups (ResourceElement Group, REG for short) used by the PDCCH within a preset period.

[0037] Step 102: Calculate the number of periodic REGs used by the PDCCH in the current TTI.

[0038] Step 103: Calculate the number of symbols of the PDCCH in the current TTI according to the sum of the number of aperiodic REGs and the number of periodic REGs.

[0039] In Embodiment 1 of the present invention, only the number of aperiodic REGs used by PDCCH is counted, and the number of periodic REGs used by PDCCH is obtained by calculation, and the symbol of PDCCH is calculated according to the sum of the number of aperiodic REGs and the number of periodic REGs number. Since the group paging has a periodic characteristic, a...

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 provides a physical downlink control channel (PDCCH) symbolic number self-adaptive method and a base station. The method comprises: counting the quantity of aperiodical resource element groups (REGs) used by a PDCCH in a preset period; calculating the quantity of periodical REGs used by the PDCCH at a current transmission time interval (TTI); and according to the sum of the quantity of aperiodical REGs and the quantity of the periodical REGs, calculating the symbolic number of the PDCCH of the current TTI. By using the PDCCH symbolic number self-adaptive method and the base station, the symbolic number self-adaptive accuracy of the PDCCH can be improved.

Description

technical field [0001] The present invention relates to communication technologies, and in particular to a physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) symbol number adaptive method and a base station (evolved Node B, eNB for short). Background technique [0002] The number of PDCCH symbols not only affects the number of symbols used for data transmission on the Physical Downlink Shared Channel (PDSCH), but also directly determines the number of users that can be authorized in the current subframe. Therefore, during the communication process, the eNB The number of PDCCH symbols is estimated according to the usage of Control Channel Element (CCE) in the latest period, so as to realize the adaptive adjustment of the number of PDCCH symbols. [0003] At present, the PDCCH symbol number adaptive method is: classify the subframes in a radio frame, and count the CCE usage of each type of subframe in a preset period. For a certain type of s...

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): H04L1/00H04W68/00
CPCH04L5/001H04W68/02
Inventor 谌晓清黄伟
Owner CHENGDU TD TECH LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products