WO2016066013A1

WO2016066013A1 - Cqi adjusting and scheduling method and device

Info

Publication number: WO2016066013A1
Application number: PCT/CN2015/091865
Authority: WO
Inventors: 杜娟; 余擎旗; 李军; 刘涛; 龙志军
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-10-27
Filing date: 2015-10-13
Publication date: 2016-05-06
Also published as: CN105634682B; CN105634682A

Abstract

A CQI adjusting and scheduling method and device, the method comprising: first, a serving cell notifies and receives ACK and NACK decoded by a non-serving cell uplink high-speed dedicated physical control channel (HS-DPCCH); then, the serving cell adjusts and schedules CQI according to the information of the received ACK and NACK decoded by the non-serving cell. When soft switching from uplink to downlink is unbalanced, the technical solution of the present invention reduces the impact of an uplink feedback error on a downlink rate, thus ensuring good communication.

Description

Method and device for adjusting scheduling CQI

Technical field

This document relates to the technical field of adjusting scheduling CQI, and in particular to a method and apparatus for adjusting scheduling CQI.

Background technique

In the soft handover of the wireless network of the CDMA system, the selection of the serving cell is judged according to the downlink signal quality. After the serving cell is determined, both uplink and downlink are performed through the service link of the serving cell. The ACK, NACK feedback, and CQI of the HS-PDSCH (High Speed Physical Downlink Shared Channel) are obtained by the serving cell demodulating the uplink high-speed dedicated entity control channel HS-DPCCH information reported by the UE. In some handover areas, the downlink signal quality of the serving cell is good, but the uplink quality is not necessarily the best. Therefore, there will be a certain uplink and downlink imbalance, that is, the downlink signal quality of the serving cell is good, but the uplink signal quality is poor. The ACK, NACK and CQI obtained by the uplink decoding of the uplink high-speed dedicated entity control channel HS-DPCCH of the serving cell will cause a large number of errors: the decoding of the ACK into a NACK will result in the DUP measured by the UE, and the NACK is resolved into an ACK, which will cause the RLC layer to retransmit. CQI decoding will cause the scheduled data block to be inconsistent with the real channel conditions, which will seriously affect the downlink rate.

Summary of the invention

An object of the present invention is to provide a method and apparatus for adjusting a scheduling CQI, which can well solve the problem that the uplink and downlink imbalances in the service area during handover and the uplink signal quality are poor, resulting in inaccurate uplink HS-DPCCH decoding information. The problem of loss.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A method for adjusting a scheduling CQI includes the following steps:

Determining that the serving cell is in an unbalanced state of uplink and downlink;

After determining that the serving cell is uplink and downlink unbalanced, the serving cell notifies the non-serving cell to decode and obtain ACK and NACK information;

The serving cell then adjusts the CQI based on the obtained ACK and NACK information.

Optionally, the step of determining that the serving cell is in an uplink and downlink imbalance state includes:

The SIV or SIRerror of the Dedicated Physical Control Channel (DPCCH) is used to determine that the serving cell is in an uplink and downlink imbalance state.

Optionally, the step of determining, by the SIR or SIRerror of the dedicated physical control channel (DPCCH), that the serving cell is in an uplink and downlink imbalance state includes:

If the SIR of the serving cell is less than a preset first threshold, or the SIR and the given SIR error are greater than a preset second threshold, it is determined that the serving cell is in an uplink and downlink imbalance state.

Optionally, the step of the serving cell notifying the non-serving cell to decode the ACK and NACK information includes:

The serving cell notifies the non-serving cell to decode the uplink high-speed dedicated entity control channel HS-DPCCH to obtain the ACK and NACK information.

Optionally, after the serving cell notifies the non-serving cell to decode the ACK and NACK information, the method further includes:

The serving cell receives the ACK and NACK information obtained by the non-serving cell.

Optionally, after the step of adjusting, by the serving cell, the CQI according to the obtained ACK and NACK information, the method further includes:

The serving cell schedules a CQI data block according to the adjusted CQI.

Optionally, the step of adjusting, by the serving cell, the CQI according to the received ACK and NACK information includes:

Each time the serving cell receives an ACK, the CQI is adjusted once;

Each time the serving cell receives a NACK, the CQI is lowered once.

The serving cell notifies the non-serving cell to obtain the ACK and NACK information through the radio network controller RNC, or directly notifies the non-serving cell to decode the ACK and NACK information.

An apparatus for adjusting a scheduling CQI, the apparatus comprising an imbalance determination unit, a reception decoding information unit, and an adjustment scheduling unit, wherein:

The imbalance determining unit is configured to: determine that the serving cell is in an uplink and downlink unbalanced state, and obtain ACK and NACK information by decoding the non-serving cell;

The receiving and decoding information unit is configured to: receive ACK and NACK information obtained by decoding the non-serving cell;

The adjustment scheduling unit is configured to: adjust CQI data according to the ACK and NACK information received by the received decoding information unit.

Optionally, the imbalance determining unit is configured to determine that the serving cell is in an uplink and downlink imbalance state according to the following manner:

Optionally, the imbalance determining unit is configured to determine, by using SIR or SIRerror of the DPCCH, that the serving cell is in an uplink and downlink imbalance state as follows:

If the SIR of the serving cell is less than a preset first threshold, or the SIR and the given SIR error are greater than a preset second threshold, determining that the serving cell is in an uplink and downlink imbalance state.

Optionally, the imbalance determining unit is configured to notify the non-serving cell to decode the ACK and NACK information according to the following manner:

The radio network controller RNC notifies the non-serving cell to decode the ACK and NACK information, or directly informs the non-serving cell to decode the ACK and NACK information.

The non-serving cell is notified to decode the uplink high-speed dedicated entity control channel HS-DPCCH to obtain the ACK and NACK information.

Optionally, the adjustment scheduling unit is further configured to:

The CQI data block is scheduled according to the adjusted CQI.

Optionally, the adjustment scheduling unit is configured to receive decoding information according to the manner as follows The ACK and NACK information received by the unit adjusts the CQI data:

Each time the serving cell receives an ACK, the CQI is adjusted once;

Each time the serving cell receives a NACK, the CQI is lowered once.

Compared with the related technology, this solution can well solve the problem that the uplink signal quality difference feedback information is inaccurate when the uplink and downlink imbalances in the service area are changed during handover. By using the reliable ACK decoded by the non-serving cell, the NACK result accurately obtains the result of the real feedback of the terminal, thereby accurately adjusting the scheduled CQI.

BRIEF abstract

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the related art description will be briefly described below.

FIG. 1 is a schematic diagram of a method for adjusting a scheduling CQI according to an embodiment of the present invention;

2 is a flowchart of a method for adjusting a scheduling CQI according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an apparatus for adjusting a scheduling CQI according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of uplink and downlink imbalance according to an embodiment of the present invention.

Preferred embodiment of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

As shown in FIG. 1 , an embodiment of the present invention provides a method for adjusting a scheduling CQI.

First, it is determined that the serving cell is in an uplink and downlink imbalance state.

The step includes: determining, by the SIR or SIRerror of the dedicated physical control channel (DPCCH), if: the serving cell SIR is less than a preset threshold 1, such as SIR is less than 0; or the SIR and the given SIR error are greater than a preset threshold. 2, for example, if the SIR is greater than 4, it is determined that the cell is in Upstream and downside imbalance.

After determining the uplink and downlink imbalance of the serving cell, the serving cell notifies the non-serving cell to decode the ACK and NACK information, and then adjusts the CQI according to the obtained ACK and NACK.

Optionally, the step of the serving cell notifying the non-serving cell to decode the ACK and NACK information, and then adjusting the CQI according to the obtained ACK and NACK includes:

The serving cell notifies the non-serving cell to decode the uplink high-speed dedicated entity control channel HS-DPCCH, and receives the ACK and NACK decoded by the non-serving cell;

The serving cell adjusts the CQI according to the received ACK and NACK;

The serving cell schedules a CQI data block according to the adjusted CQI.

The step of scheduling, by the serving cell, the CQI data block according to the adjusted CQI may be performed, or may not be performed.

Optionally, the step of adjusting, by the serving cell, the CQI according to the received ACK and NACK information comprises: the serving cell uplinks a CQI every time an ACK is received; and the serving cell decreases the CQI every time the NACK is received.

The following is a specific embodiment provided in accordance with the technical solution of the present invention.

As shown in FIG. 2, an embodiment of the present invention provides a method for adjusting a scheduling CQI, including:

S201: The serving cell obtains SIR and SIRerror information of the control channel of the local cell,

S202: The serving cell determines, according to the SIR and the SIRerror, whether the cell is in an uplink and downlink imbalance state;

If the serving cell SIR is less than the preset first threshold, for example, the SIR is less than 0; or the SIR and the given SIR error value are greater than the preset second threshold, for example, the SIR error is greater than 4, then the cell is determined to be in the uplink and downlink. Balanced state;

In the case of imbalance, the serving cell directly or the RNC indirectly informs the non-serving cell to decode the HS-DPCCH information to obtain ACK and NACK;

S203: The serving cell receives the ACK, NACK, and information of the HS-DPCCH demodulated by the non-serving cell;

If the serving cell is in an unbalanced state of uplink and downlink, it notifies the non-serving cell to decode. HS-DPCCH, which simultaneously receives information of ACK and NACK decoded by the non-serving cell;

S204: The serving cell adjusts the scheduling CQI according to the ACK reported by the non-serving cell.

If the serving cell receives the ACK from the non-serving cell, the CQI is stepped up by step A, for example, by 0.1; if the serving cell receives the NACK from the non-serving cell, the CQI is stepped down by step B, for example, by 0.9; if the serving cell receives the non-service The cell reporting DTX does not adjust the CQI, and does not perform HARQ retransmission according to the ACK and NACK of the serving cell.

S205: The serving cell performs scheduling data block according to the adjusted CQI.

After the serving cell adjusts the CQI, the appropriate transport block is selected according to the block selection algorithm scheduling data.

An embodiment of the present invention further discloses an apparatus for adjusting a scheduling CQI. As shown in FIG. 3, the apparatus includes:

The imbalance determination unit 301 is configured to: determine that the serving cell is in an uplink and downlink imbalance state, notify the non-serving cell to decode the HS-DPCCH channel through the radio network controller RNC, or directly notify the non-serving cell to decode the HS-DPCCH channel;

The receiving and decoding information unit 302 is configured to: receive ACK and NACK information obtained by decoding the HS-DPCCH channel by the non-serving cell;

The adjustment scheduling CQI unit 303, or the adjustment scheduling unit 303, is configured to: adjust CQI data according to the ACK and NACK information received by the received decoding information unit 302.

Optionally, the adjustment scheduling unit 303 is further configured to select a suitable transport block according to the block selection algorithm scheduling data.

Optionally, the imbalance determining unit 301 is configured to determine that the serving cell is in an uplink and downlink imbalance state according to the following manner:

Optionally, the imbalance determining unit 301 is configured to determine, by using SIR or SIRerror of the DPCCH, that the serving cell is in an uplink and downlink imbalance state as follows:

If the SIR of the serving cell is less than a preset first threshold, or the SIR and the given If the SIR error is greater than the preset second threshold, it is determined that the serving cell is in an uplink and downlink imbalance state.

Optionally, the imbalance determining unit 301 is configured to notify the non-serving cell to decode the ACK and NACK information according to the following manner:

Optionally, the adjustment scheduling unit 303 is further configured to:

The CQI data block is scheduled according to the adjusted CQI.

Optionally, the adjustment scheduling unit 303 is configured to adjust CQI data according to the ACK and NACK information received by the received decoding information unit according to the following manner:

Each time the serving cell receives an ACK, the CQI is adjusted once;

Each time the serving cell receives a NACK, the CQI is lowered once.

In addition, the present invention is described in conjunction with FIG. 4 in the upper and lower unbalanced state. In the area where the downlink transmission signal of the current serving cell is well covered, the uplink signal of the current serving cell of the UE is not necessarily good, and the ACK and NACK reported by the UE to the non-serving cell can be adjusted. CQI and schedule data blocks.

The above description shows and describes a preferred embodiment of the present invention, but as described above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be construed as Other combinations, modifications, and environments are possible and can be modified by the above teachings or related art or knowledge within the scope of the inventive concept described herein. All changes and modifications made by those skilled in the art are intended to be within the scope of the appended claims.

The embodiment of the invention also discloses a computer program, comprising program instructions, which when executed by a computer, enable the computer to perform any of the above methods for adjusting the scheduling CQI.

The embodiment of the invention also discloses a carrier carrying the computer program.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

Industrial applicability

The method and the device of the technical solution of the present invention can reduce the influence of the uplink feedback error on the downlink rate when the soft handover is unbalanced, and ensure good communication. Therefore, the present invention has strong industrial applicability.

Claims

A method for adjusting a scheduling CQI includes the following steps:

Determining that the serving cell is in an unbalanced state of uplink and downlink;

After determining that the serving cell is uplink and downlink unbalanced, the serving cell notifies the non-serving cell to decode and obtain ACK and NACK information;

The serving cell then adjusts the CQI based on the obtained ACK and NACK information.
The method for adjusting a scheduling CQI according to claim 1, wherein the step of determining that the serving cell is in an uplink and downlink imbalance state comprises:

The SIV or SIRerror of the Dedicated Physical Control Channel (DPCCH) is used to determine that the serving cell is in an uplink and downlink imbalance state.
The method for adjusting a scheduling CQI according to claim 2, wherein the step of determining, by the SIR or SIRerror of the DPCCH, that the serving cell is in an uplink and downlink imbalance state comprises:

If the SIR of the serving cell is less than a preset first threshold, or the SIR and the given SIR error are greater than a preset second threshold, it is determined that the serving cell is in an uplink and downlink imbalance state.
The method for adjusting a scheduling CQI according to claim 1, wherein the step of the serving cell notifying the non-serving cell to decode the ACK and NACK information comprises:

The serving cell notifies the non-serving cell to decode the uplink high-speed dedicated entity control channel HS-DPCCH to obtain the ACK and NACK information.
The method for adjusting a scheduling CQI according to claim 1, wherein after the serving cell notifies the non-serving cell to decode the ACK and NACK information, the method further includes:

The serving cell receives the ACK and NACK information obtained by the non-serving cell.
The method of adjusting a CQI according to any one of claims 1 to 5, wherein after the step of adjusting the CQI by the serving cell according to the obtained ACK and NACK information, the method further includes:

The serving cell schedules a CQI data block according to the adjusted CQI.
The method for adjusting a CQI according to claim 6, wherein the step of adjusting, by the serving cell, the CQI according to the received ACK and NACK information comprises:

Each time the serving cell receives an ACK, the CQI is adjusted once;

Each time the serving cell receives a NACK, the CQI is lowered once.
The method for adjusting a scheduling CQI according to claim 1, wherein the step of the serving cell notifying the non-serving cell to decode the ACK and NACK information comprises:

The serving cell notifies the non-serving cell to obtain the ACK and NACK information through the radio network controller RNC, or directly notifies the non-serving cell to decode the ACK and NACK information.
An apparatus for adjusting a scheduling CQI, the apparatus comprising an imbalance determination unit, a reception decoding information unit, and an adjustment scheduling unit, wherein:

The imbalance determining unit is configured to: determine that the serving cell is in an uplink and downlink unbalanced state, and obtain ACK and NACK information by decoding the non-serving cell;

The receiving and decoding information unit is configured to: receive ACK and NACK information obtained by decoding the non-serving cell;

The adjustment scheduling unit is configured to: adjust CQI data according to the ACK and NACK information received by the received decoding information unit.
The apparatus for adjusting a scheduling CQI according to claim 9, wherein the imbalance determining unit is configured to determine that the serving cell is in an uplink and downlink imbalance state as follows:

The SIV or SIRerror of the Dedicated Physical Control Channel (DPCCH) is used to determine that the serving cell is in an uplink and downlink imbalance state.
The apparatus for adjusting a CQI according to claim 10, wherein the imbalance determination unit is configured to determine that the serving cell is in an uplink and downlink imbalance state by SIR or SIRerror of the DPCCH as follows:

If the SIR of the serving cell is less than a preset first threshold, or the SIR and the given SIR error are greater than a preset second threshold, determining that the serving cell is in an uplink and downlink imbalance state.
The apparatus for adjusting a scheduling CQI according to claim 9, wherein the imbalance determining unit is configured to notify the non-serving cell to decode the ACK and NACK information as follows:

The radio network controller RNC notifies the non-serving cell to decode the ACK and NACK information, or directly informs the non-serving cell to decode the ACK and NACK information.
The apparatus for adjusting a scheduling CQI according to claim 9, wherein the imbalance determining unit is configured to notify the non-serving cell to decode the ACK and NACK information as follows:

The non-serving cell is notified to decode the uplink high-speed dedicated entity control channel HS-DPCCH to obtain the ACK and NACK information.
The apparatus for adjusting a scheduling CQI according to any one of claims 9 to 13, wherein the adjustment scheduling unit is further configured to:

The CQI data block is scheduled according to the adjusted CQI.
The apparatus for adjusting a scheduling CQI according to claim 9, wherein the adjustment scheduling unit is configured to adjust CQI data according to the ACK and NACK information received by the received decoding information unit as follows:

Each time the serving cell receives an ACK, the CQI is adjusted once;

Each time the serving cell receives a NACK, the CQI is lowered once.