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Method and device for resource allocation

A resource allocation and resource limited technology, applied in the field of resource allocation, can solve the problems of random access failure, inability to allocate resources, and low resource utilization, and achieve the effect of improving resource utilization.

Active Publication Date: 2021-11-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for FDD (Frequency Division Duplex, Frequency Division Duplex) system, cell configurations with 5M, 10M, 15M and 20M bandwidths, when the CFI value is 1, random access failures in 5M cells may occur , resulting in the physical downlink control channel under the FDD system not being able to adaptively allocate resources according to CFI, resulting in low resource utilization

Method used

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  • Method and device for resource allocation
  • Method and device for resource allocation
  • Method and device for resource allocation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] refer to figure 1 , which shows a flow chart of Embodiment 1 of a method for resource allocation in the present invention, the method may specifically include:

[0024] Step 101, judging whether the control format indicates that the CFI adaptive function is enabled, and if so, obtaining the standard and bandwidth of the current cell;

[0025] Step 102, according to the system and bandwidth of the current cell, set the value range of the CFI value; wherein, the system includes frequency division duplex FDD system or time division duplex TDD system;

[0026] Step 103: Adaptively adjust the CFI value of the current frame type according to the CCE occupancy rate of the control channel unit of the current frame, the physical downlink control channel PDCCH resource limited judgment down-adjustment threshold, and the PDCCH resource limited judgment up-adjustment threshold, wherein the adjustment The final CFI value does not exceed the range of the CFI value.

[0027] The emb...

Embodiment 2

[0078] refer to figure 2 , which shows a flow chart of Embodiment 2 of a method for resource allocation in the present invention, which is applied to a cell base station in FDD mode, and the method may specifically include:

[0079] Step 201, judging whether the CFI adaptive function is enabled; if so, then execute step 202, if not, then execute step 215;

[0080] Specifically, it is judged whether the CFI self-adaptive function is enabled; if it is enabled, the subsequent process is executed; if it is not enabled, the current configuration of the base station is adopted and exited.

[0081] Step 202, judging whether the FDD cell is a 5M cell; if so, execute step 203, if not, execute step 204;

[0082] Considering that the CFI cannot be 1 when the user initially accesses the 5M cell under the FDD system, otherwise the access will fail, so the CFI value of the 5M cell cannot be set to 1. Therefore, judge whether the currently accessed cell is a 5M cell, and if so, set the mi...

Embodiment 3

[0105] refer to image 3 , which shows a flow chart of Embodiment 3 of a resource allocation method of the present invention, which is applied to a TDD cell base station, and the method may specifically include:

[0106] Step 301, judging whether the CFI self-adaptive function is enabled; if so, then execute step 302, if not, then execute step 312;

[0107] Specifically, it is judged whether the CFI self-adaptive function is enabled; if it is enabled, the subsequent process is executed; if it is not enabled, the current configuration of the base station is adopted and exited.

[0108] Step 302, calculating the CCE occupancy rate of the current frame;

[0109] Specifically, calculate the CCE occupancy rate cfiOCURATE_CCH of the current frame, cfiOCURATE_CCH=CCEsum / CCEnum, where CCEnum is the total number of CCEs in the current CFI of the frame, and CCEsum is the number of occupied CCEs.

[0110] Step 303, judging whether the CCE occupancy rate of the current frame is higher t...

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Abstract

Embodiments of the present invention provide a method and device for resource allocation, wherein the method includes: judging whether the control format indicates that the CFI adaptive function is enabled, and if so, obtaining the standard and bandwidth of the current cell; according to the standard and bandwidth of the current cell Bandwidth, set the value range of the CFI value; wherein, the system includes a frequency division duplex FDD system or a time division duplex TDD system; according to the control channel unit CCE occupancy rate of the current frame and the physical downlink control channel PDCCH resource limitation, it is judged to lower The threshold, and the PDCCH resource limited judgment raises the threshold, and adaptively adjusts the CFI value of the current frame type, wherein the adjusted CFI value does not exceed the CFI value range. In the embodiment of the present invention, the CFI value can be dynamically adjusted according to the cell standard, so as to improve resource utilization.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a resource allocation method and device. Background technique [0002] When the LTE (Long Term Evolution, Long Term Evolution) system schedules transmission, it is necessary to indicate related resource allocation, modulation and coding schemes, etc. through a PDCCH (Physical Downlink Control CHannel, Physical Downlink Control Channel). [0003] In the LTE system, the method for eNodeB (Evolved Node B, evolved Node B) to adaptively allocate resources according to CFI (ControlFormatIndicator, Control Format Indication) is: the eNodeB takes 1 ms as the scheduling unit, and calculates when the subframe is initialized for each scheduling After obtaining the CFI value, determine the CCE (Control Channel Element, Control Channel Element) resource allocated to the control channel under the current system bandwidth according to the CFI value, and then allocate CCE resource...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W72/12
CPCH04L5/003H04W72/1263H04W72/20
Inventor 乔瞳常璐
Owner DATANG MOBILE COMM EQUIP CO LTD