CN105162549A - Position-based CQI period adjusting method and base station - Google Patents
Position-based CQI period adjusting method and base station Download PDFInfo
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- CN105162549A CN105162549A CN201510451701.1A CN201510451701A CN105162549A CN 105162549 A CN105162549 A CN 105162549A CN 201510451701 A CN201510451701 A CN 201510451701A CN 105162549 A CN105162549 A CN 105162549A
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- cqi
- transmission mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a position-based CQI period adjusting method and a base station. The position-based CQI period adjusting method comprises the following steps: receiving a measurement report sent by a user terminal; determining the type of the measurement report; determining a corresponding transmission mode; and adjusting a CQI period in a classification mode according to the type of the measurement and the corresponding transmission mode. According to the invention, through dynamically adjusting the CQI period through intermediate good points and bad points in UE on the basis of the measurement report and the transmission mode, frequency domain resources can be better utilized. Resources occupied by CQIs of the intermediate good points are reduced, and the assessment accuracy of user channels of the bad points is improved.
Description
Technical field
The present invention relates to a kind of location-based CQI period modulation method and base station, belong to communication technical field.
Background technology
At LTE (LongTermEvolution, Long Term Evolution) in system, CQI (ChannelQualityIndicator, channel quality indicates) on to call the score periodic report and reporting aperiodic, no matter be report periodic report or aperiodic all to have RRC (RadioResourceControl, wireless heterogeneous networks) layer decision, CQI report cycle is the behavior of a cell-level.Facing to increasing LTE user, how whole community makes rational planning for the CQI cycle, how reasonably to assess channel, become important topic under different scene.The research of this problem is conducive to the channel quality that all terminals are correctly assessed in base station, give suitable MCS (ModulationandCodingScheme, modulation and coding strategy) of equal value to dispatch, make rational use of resources on the one hand, better minimizing CQI reports frequency, and the not good enough CQI that increases reports frequency to promote accuracy.
Unify user's actual environment that the allocating cell level CQI cycle does not meet whole community zones of different, especially need channel estimating more accurately when not good enough switching.
Summary of the invention
The technical problem to be solved in the present invention is: how to utilize frequency domain resource better by adjustment CQI cycle trade mark.
The invention provides a kind of location-based CQI period modulation method and base station.
On the one hand, the invention provides a kind of location-based CQI period modulation method, comprise the steps:
Receive the measurement report that user terminal sends;
Judge the type of measurement report;
Judge corresponding transmission mode;
By type and the corresponding transmission mode classification adjustment CQI cycle of measuring report.
Wherein more preferably, described class area and the step in corresponding transmission mode classification adjustment CQI cycle by measuring report comprises:
If based on close GAP measurement report and be Open-Loop Spatial Multiplexing transmission mode, then base station to user terminal send adjustment the CQI cycle first adjust message.
Wherein more preferably, described first adjustment message is for elongating CQI report cycle.
Wherein more preferably, described CQI report cycle is adjusted to 160 milliseconds.
Wherein more preferably, described class area and the step in corresponding transmission mode classification adjustment CQI cycle by measuring report comprises:
If based on the measurement report of closing GAP and be not Open-Loop Spatial Multiplexing transmission mode, then continue to judge the type of measurement report not adjust the CQI cycle, until transmission mode becomes Open-Loop Spatial Multiplexing transmission mode.
Wherein more preferably, described class area and the step in corresponding transmission mode classification adjustment CQI cycle by measuring report comprises:
If based on open GAP measurement report and be dual-stream beamforming transmission mode, then base station to user terminal send elongate the CQI cycle second adjustment message.
Wherein more preferably, described second adjustment message is for shortening CQI report cycle.
Wherein more preferably, described CQI report cycle is 20 milliseconds.
Wherein more preferably, described class area and the step in corresponding transmission mode classification adjustment CQI cycle by measuring report comprises:
If based on the measurement report opening GAP and be not dual-stream beamforming transmission mode, then continue to judge the type of measurement report not adjust the CQI cycle, until transmission mode becomes dual-stream beamforming transmission mode.
Wherein more preferably, described class area and the step in corresponding transmission mode classification adjustment CQI cycle by measuring report comprises:
If after receiving the measurement report that user terminal sends, neither dual-stream beamforming transmission mode neither Open-Loop Spatial Multiplexing transmission mode, do not adjust the CQI cycle.
On the other hand, the present invention also provides a kind of base station, the above-mentioned CQI period modulation method of this base station applies; Described base station comprises:
Measurement report receiving element, measurement report detecting unit, transmission mode detecting unit and CQI cycle adjusting unit;
The measurement report that user terminal sends receives and is sent to measurement report detecting unit by described measurement report receiving element;
Described measurement report detecting unit detects the type of measurement report and testing result is sent to transmission mode detecting unit;
Transmission mode detecting unit detects current transmission mode and transmission mode and measurement report type is sent to CQI cycle adjusting unit;
CQI cycle adjusting unit is by type and the corresponding transmission mode classification adjustment CQI cycle of measuring report.
Location-based CQI period modulation method provided by the invention and base station, by utilizing frequency domain resource based on measurement report+transmission mode better in UE, not good enough dynamic conditioning CQI cycle.Save resource shared by better CQI, improve not good enough subscriber channel assessment accuracy.
Accompanying drawing explanation
Fig. 1 is CQI period modulation method flow schematic diagram of the present invention;
Fig. 2 is base station of the present invention adjustment CQI schematic flow sheet;
Fig. 3 is UE signaling process schematic diagram between base station of the present invention and UE;
Fig. 4 is architecture of base station schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, the invention provides a kind of location-based CQI period modulation method, this comprises the steps: the measurement report receiving user terminal transmission; Judge the type of measurement report; Judge corresponding transmission mode; By type and the corresponding transmission mode classification adjustment CQI cycle of measuring report.Detailed description is launched to location-based CQI period modulation method provided by the invention below.
UE measurement report is the important evidence that RRM carries out relevant control (power control, RB Dynamic controlling, switching controls and radio link monitoring etc.), and can be the follow-up network planning, the network optimization provides foundation.UE leaves the time period that current frequency is measured to other frequencies, and UE measurement report is used for different-frequency measure and isosystem measurement.When needs carry out alien frequencies or isosystem measurement, eNodeB will issue UE measurement report relevant configuration, and the configuration instruction according to eNodeB is started UE measurement report by UE.
As shown in Fig. 1, Fig. 2, base station first judges the type of measurement report, then determines current transmission mode after receiving the measurement report of UE transmission.As shown in Figure 3, if the measurement report type that base station receives opens the measurement report (A2) of GAP, then prove that UE is moved to almost, now base station needs to judge that current transmission mode is dual-stream beamforming transmission mode (TM8); If current transmission mode is dual-stream beamforming transmission mode, then base station sends CQI to UE and adjusts message, CQI adjustment message shortening CQI cycle that UE sends by base station (be 20ms by CQI period modulation).If current transmission mode is not dual-stream beamforming transmission mode, report and be not dual-stream beamforming transmission mode, then continue to judge the type of measurement report not adjust the CQI cycle, until transmission mode becomes dual-stream beamforming transmission mode.
As shown in Figure 3, if the measurement report type that base station receives is the measurement report (A1) of closing GAP, then prove that UE is better in being moved to, now base station needs to judge that current transmission mode is dual-stream beamforming transmission mode (TM3); If current transmission mode is Open-Loop Spatial Multiplexing transmission mode, then base station sends CQI to UE and adjusts message, CQI adjustment message elongation CQI cycle that UE sends by base station (be 160ms by CQI period modulation).If current transmission mode is not Open-Loop Spatial Multiplexing transmission mode, then continues the type judging measurement report, do not adjust the CQI cycle, until transmission mode becomes Open-Loop Spatial Multiplexing transmission mode.
If after base station receives the measurement report that user terminal sends, after further judging current transmission mode, current transmission mode is neither dual-stream beamforming transmission mode neither Open-Loop Spatial Multiplexing transmission mode, then base station does not adjust the CQI cycle.
For embodying the superiority of location-based CQI period modulation method provided by the invention further, the present invention also provides a kind of base station, the above-mentioned CQI period modulation method of this base station applies; Described base station comprises: measurement report receiving element, measurement report detecting unit, transmission mode detecting unit and CQI cycle adjusting unit; The measurement report that user terminal sends receives and is sent to measurement report detecting unit by described measurement report receiving element; Described measurement report detecting unit detects the type of measurement report and testing result is sent to transmission mode detecting unit; Transmission mode detecting unit detects current transmission mode and transmission mode and measurement report type is sent to CQI cycle adjusting unit; CQI cycle adjusting unit is by type and the corresponding transmission mode classification adjustment CQI cycle of measuring report.In the present invention, base station is identical with above-mentioned location-based CQI period modulation method according to the process in the measurement report adjustment CQI cycle that UE sends, and is not just repeating one by one at this.
In sum, location-based CQI period modulation method provided by the invention and base station, by utilizing frequency domain resource based on measurement report+transmission mode better in UE, not good enough dynamic conditioning CQI cycle; Save resource shared by better CQI, improve not good enough subscriber channel assessment accuracy.
Above execution mode is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (11)
1. a location-based CQI period modulation method, is characterized in that, comprise the steps:
Receive the measurement report that user terminal sends;
Judge the type of measurement report;
Judge corresponding transmission mode;
By type and the corresponding transmission mode classification adjustment CQI cycle of measuring report.
2. CQI period modulation method as claimed in claim 1, is characterized in that, described class area and the step in corresponding transmission mode classification adjustment CQI cycle by measuring report comprises:
If based on close GAP measurement report and be Open-Loop Spatial Multiplexing transmission mode, then base station to user terminal send adjustment the CQI cycle first adjust message.
3. CQI period modulation method as claimed in claim 2, is characterized in that, described first adjustment message is for elongating CQI report cycle.
4. CQI period modulation method as claimed in claim 3, it is characterized in that, described CQI report cycle is adjusted to 160 milliseconds.
5. CQI period modulation method as claimed in claim 1, is characterized in that, described class area and the step in corresponding transmission mode classification adjustment CQI cycle by measuring report comprises:
If based on the measurement report of closing GAP and be not Open-Loop Spatial Multiplexing transmission mode, then continue to judge the type of measurement report not adjust the CQI cycle, until transmission mode becomes Open-Loop Spatial Multiplexing transmission mode.
6. CQI period modulation method as claimed in claim 1, is characterized in that, described class area and the step in corresponding transmission mode classification adjustment CQI cycle by measuring report comprises:
If based on open GAP measurement report and be dual-stream beamforming transmission mode, then base station to user terminal send elongate the CQI cycle second adjustment message.
7. CQI period modulation method as claimed in claim 6, is characterized in that, described second adjustment message is for shortening CQI report cycle.
8. CQI period modulation method as claimed in claim 7, it is characterized in that, described CQI report cycle is 20 milliseconds.
9. CQI period modulation method as claimed in claim 1, is characterized in that, described class area and the step in corresponding transmission mode classification adjustment CQI cycle by measuring report comprises:
If based on the measurement report opening GAP and be not dual-stream beamforming transmission mode, then continue to judge the type of measurement report not adjust the CQI cycle, until transmission mode becomes dual-stream beamforming transmission mode.
10. CQI period modulation method as claimed in claim 1, is characterized in that, described class area and the step in corresponding transmission mode classification adjustment CQI cycle by measuring report comprises:
If after receiving the measurement report that user terminal sends, neither dual-stream beamforming transmission mode neither Open-Loop Spatial Multiplexing transmission mode, do not adjust the CQI cycle.
11. 1 kinds of base stations, is characterized in that, apply the CQI period modulation method described in claim 1-10; Described base station comprises:
Measurement report receiving element, measurement report detecting unit, transmission mode detecting unit and CQI cycle adjusting unit;
The measurement report that user terminal sends receives and is sent to measurement report detecting unit by described measurement report receiving element;
Described measurement report detecting unit detects the type of measurement report and testing result is sent to transmission mode detecting unit;
Transmission mode detecting unit detects current transmission mode and transmission mode and measurement report type is sent to CQI cycle adjusting unit;
CQI cycle adjusting unit is by type and the corresponding transmission mode classification adjustment CQI cycle of measuring report.
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| CN108243509A (en) * | 2016-12-23 | 2018-07-03 | 大唐移动通信设备有限公司 | A kind of downlink data transmission method and base station |
| CN113541855A (en) * | 2020-04-15 | 2021-10-22 | 中国移动通信集团山东有限公司 | CQI dynamic adjustment method and system |
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| CN113541855A (en) * | 2020-04-15 | 2021-10-22 | 中国移动通信集团山东有限公司 | CQI dynamic adjustment method and system |
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| CN105162549B (en) | 2018-07-17 |
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