CN105025577B - LTE system ascending wireless resource control method and base station - Google Patents
LTE system ascending wireless resource control method and base station Download PDFInfo
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Abstract
The invention discloses a kind of LTE system ascending wireless resource control method and base stations, are related to LTE communication technical field.This method is proposed for voice service, and two BLER desired values, BLER_1 and BLER_2, and BLER_2 is arranged>BLER_1；BLER_1 is as power control target, and when transmission power reaches maximum to terminal under available power limitation, as long as actual BLER is not higher than BLER_2, scheduler does not reduce MCS, but passes through the more frame error rate requirement retransmitted to ensure business of LTE system physical layer；When actual BLER is higher than BLER_2, scheduler reduces MCS.Pass through the ascending wireless resource distribution mechanism of the disclosure so that the speech business of less demanding to frame error rate, when the data that terminal is sent reach base station, BLER can be higher than common IP operation, can save the radio resource of uplink.
Description
Technical field
The present invention relates to LTE (Long Term Evolution, long term evolution) fields of communication technology, more particularly to one kind
LTE system ascending wireless resource control method and base station.
Background technology
LTE be organized to set up by 3GPP UMTS (Universal Mobile Telecommunication System,
Universal Mobile Communication System) technical standard long term evolution.VoLTE (Voice over LTE, LTE voice) is by LTE network
The voice service system with service quality guarantee provided.
Existing LTE ascending wireless resources administrative mechanism is as follows：
Using BLER (Block Error Rate, Block Error Rate) target of the desired value as uplink power control so that eventually
End configures lower using suitable transmitting work(in certain MCS (Modulation and Coding Scheme, Modulation and Coding Scheme)
Rate finally maintains essentially in BLER desired values in the practical Block Error Rate that base station side detects；Terminal makes to emit work(far from base station
When rate reaches maximum, if practical Block Error Rate cannot be controlled to the level in BLER desired values, following measure can be taken：1)
Reduce MCS；2) or using other manner enhanced uplink；
Fig. 1 is the schematic diagram that up-link wireless distribution is carried out according to a BLER desired value.
As shown in Figure 1, after terminal establishes VoLTE speech businesses, from the place closer from base station (it is assumed that at this time
The MCS of row wireless channel is configured to 17) move to the direction far from base station, and the uplink transmission power of this process terminal can constantly add
Greatly, to maintain the requirement of BLER desired values (BLER desired values require as 10% in figure)；
When the position for the dot 11 being moved in figure, terminal transmission power reaches maximum；If portion moves further out
If the dynamic radio-resource-configuration without changing uplink of eating dishes without rice or wine, actual BLER cannot necessarily meet the requirement of BLER desired values；Cause
This, base station meeting instruction terminal can reduce MCS (it is assumed that being reduced to 11)：With this process, voice packet is being eated dishes without rice or wine point
Section, is divided into smaller data packet, so as to be transmitted in ascending idle port using lower MCS so that terminal can be with smaller
Transmission power meets the requirement of uplink BLER desired values.
If terminal continues the position of the side's of moving outwardly to point 12, the uplink transmitting of terminal under uplink MCS=11 configurations
Power reaches maximum again, at this time further out if portion's movement, base station will instruction terminal to further decrease MCS (false herein
Determine MCS to be reduced to 7).
The present inventors have noted that：Above-mentioned mechanism, for this kind of business of less demanding to frame error rate of VoLTE, wirelessly
Resource allocation has a degree of waste.
Invention content
The inventors found that above-mentioned exist in the prior art problem, and at least one be therefore directed in described problem
A problem proposes a kind of new technical solution.
It is an object of the present invention to provide a kind of technical solutions for the control of LTE system ascending wireless resource.
According to the first aspect of the invention, a kind of LTE system ascending wireless resource control method is provided, including：
Base station judges the business of terminal, determines that the business of terminal is voice service；
Base station obtains the upstream data BLER of terminal；
Base station judges whether the upstream data BLER of terminal is more than first threshold；
If the upstream data BLER of terminal is more than first threshold, base station judges whether the upstream data BLER of terminal is big
In second threshold, wherein second threshold is more than first threshold；
If the upstream data BLER of terminal is more than second threshold, base station instruction terminal reduces MCS；
If the upstream data BLER of terminal is not more than second threshold, base station increases the transmission power of terminal so that eventually
The upstream data BLER at end is not more than second threshold；
If the upstream data BLER of terminal is not more than first threshold, base station carries out power control to terminal and makes terminal
Upstream data BLER be not more than first threshold.
Optionally, this method further includes：
Base station determines that the business of terminal is data services；
Base station judges whether the upstream data BLER of terminal is more than first threshold；
If the upstream data BLER of terminal is more than first threshold, base station instruction terminal reduces MCS；
If the upstream data BLER of terminal is not more than first threshold, base station carries out power control to terminal and makes terminal
Upstream data BLER be not more than first threshold.
Optionally, first threshold 10% and/or second threshold are 20%.
Optionally, voice service includes VoLTE business；And/or data services include IP internet business.
Optionally, base station makes the upstream data BLER of terminal be not more than first threshold packet terminal progress power control
It includes：
Base station does not adjust to the terminal rate of doing work and indicates；
Or
Base station carries out power control to terminal and the upstream data BLER of terminal is made to be equal to first threshold.
According to another aspect of the present invention, a kind of base station is provided, including：
Type of service judgment module, the type of service for judging terminal send the type of service of terminal；
Upstream data acquisition module, the upstream data for receiving terminal obtain the upstream data BLER of terminal, send
BLER；
MCS control modules, the type of service for receiving the terminal from type of service judgment module；It receives and comes from uplink
The BLER of data acquisition module；
If type of service is voice service,：
Judge whether BLER is more than first threshold,
If BLER is more than first threshold, judge whether BLER is more than second threshold, wherein second threshold is more than first
Threshold value；
If BLER is more than second threshold, it indicates that terminal reduces MCS；
If BLER is not more than second threshold, the MCS of terminal is not adjusted, increases the transmission power of terminal so that terminal
Upstream data BLER be not more than first threshold；
If BLER is not more than first threshold, the MCS of terminal is not adjusted.
Optionally, MCS control modules are additionally operable to：
If the business of terminal is data services,：
Judge whether the upstream data BLER of terminal is more than first threshold；
If it is, instruction terminal reduces MCS；
The upstream data BLER of terminal is made to be not more than first threshold if it is not, then carrying out power control to terminal.
Optionally, first threshold 10% and/or second threshold are 20%.
Optionally, voice service includes VoLTE business；And/or data services include IP internet business.
Optionally, if BLER is not more than first threshold, MCS control modules do not adjust the MCS of terminal, do not make to terminal
Power adjustment indicates；Or
Carrying out power control to terminal makes the upstream data BLER of terminal be equal to first threshold.
An advantage of the present invention is that for the data sent to frame error rate voice service of less demanding, terminal
When reaching base station, BLER can be higher than common IP operation, and this mechanism can save the radio resource of uplink.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
The attached drawing of a part for constitution instruction describes the embodiment of the present invention, and is used to solve together with the description
Release the principle of the present invention.
The present invention can be more clearly understood according to following detailed description with reference to attached drawing, wherein：
Fig. 1 is the schematic diagram that up-link wireless distribution is carried out according to a BLER desired value；
Fig. 2 is the flow chart of one embodiment of LTE system ascending wireless resource control method according to the present invention；
Fig. 3 is the flow chart of another embodiment of LTE system ascending wireless resource control method according to the present invention；
Fig. 4 be according to embodiments of the present invention in by two BLER desired value co- controllings carry out ascending wireless resource distribution
Schematic diagram；
Fig. 5 is the structure chart according to one embodiment of base station of the present invention.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Simultaneously, it should be appreciated that for ease of description, the size of attached various pieces shown in the drawings is not according to reality
Proportionate relationship draw.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Fig. 2 is the flow chart of one embodiment of LTE system ascending wireless resource control method according to the present invention.
As shown in Fig. 2, step 202, base station obtains the Block Error Rate of terminal uplink data.
Step 204, base station judges the type of service of terminal, determines that the business of terminal is voice service.Voice
Class business is such as including VoLTE.
Step 206, base station judges whether the BLER of terminal uplink data is more than first threshold, if it is, continuing step
208, otherwise, continue step 214.
Step 208, when the upstream data BLER of terminal is more than first threshold, base station judges that the upstream data BLER of terminal is
It is no to be more than second threshold, wherein second threshold is more than first threshold；If the upstream data BLER of terminal is more than second threshold
It is worth, then base station instruction terminal reduces MCS (steps 210)；Otherwise, base station increases the transmission power of terminal so that the uplink of terminal
Data BLER is not more than second threshold (step 212).
Step 214, if the upstream data BLER of terminal is not more than first threshold, base station carries out power control to terminal
So that the upstream data BLER of terminal is not more than first threshold.
In above-described embodiment, two BLER desired values, i.e. first threshold and second threshold concur, and use is this
Ascending wireless resource distribution mechanism, for this voice service of less demanding to frame error rate such as such as VoLTE, what terminal was sent
When data reach base station, BLER can often be higher than common IP operation, and this mechanism may save the radio resource of uplink.
First threshold and the specific setting value of second threshold can flexibly be realized by base station, for example, first threshold value 5%
~15%, second threshold value 15%~25%.In one embodiment, first threshold 10%, second threshold 20%.
Fig. 3 is the flow chart of another embodiment of LTE system ascending wireless resource control method according to the present invention.
As shown in figure 3, step 302, base station judges the type of service of terminal, determines whether the business of terminal is language
Sound class businessIf it is, continuing step 312, voice service control is carried out；It is e.g. general if not voice service
Logical IP operation, then continue step 304.
Step 304, base station obtains terminal uplink data BLER.
Step 306, base station judges whether the BLER of terminal uplink data is more than first threshold, if it is, base station indicates
Terminal reduces MCS (steps 308), and otherwise, base station carries out power control, (step 310) to terminal.
Step 312~step 322, the realization of specific steps may refer to the description of step 204~214 in Fig. 2, be succinct
For the sake of be not described in detail again.
Existing ascending wireless resource management with distribution, for common IP operation, using a BLER desired value come into
Row control, if transmission power reaches maximum when cannot but meet BLER desired values and requiring, will be dropped when terminal is far from base station
Low MCS, or use other manner enhanced uplink.
In above-described embodiment, voice service and non-voice class business are distinguished, for voice service using special
Different radio resource allocation scheme, to save ascending wireless resource；And for non-voice class business, still according to original scheme
It is handled.
When multiple business of user and when depositing, each business sheet is stayed alone reason；Such as HTTP business, the work also with before
Make, only there are one BLER desired values；Certain particular services, such as voice, using two BLER desired value co- controllings；Small mesh
Scale value (such as BLER_1=10%) is used for uplink power control；Big desired value (such as BLER_2=20%) is for controlling MCS's
Conversion.
Fig. 4 is an example for carrying out ascending wireless resource distribution by two BLER desired value co- controllings according to the present invention
Schematic diagram.In this example, it is assumed that BLER_1=10%, BLER_2=20%.As shown in Figure 4：
1. terminal establishes VoLTE business in A points, base station configures terminal uplink wireless channel to MCS=17.
2. terminal is moved to the direction far from base station, base station carries out power control according to BLER_1 desired values to terminal first
System so that base station receives the practical BLER=BLER_1=10% of data of terminal transmission.
3. terminal is further moved to the direction far from base station, when reaching B points, terminal report base station, and available transmitting work(
Rate is finished, and terminal full power under available power limitation emits at this time.
4. terminal is further away from base station, actual BLER>BLER_1=10%, but<BLER_2=20%, at this time terminal
Remain within the lower full power transmitting of available power limitation.
5. terminal reaches C points, the actual BLER=BLER_2=20% of terminal, is still tieed up at this time further away from base station
The full power under available power limitation is held to emit.
6. terminal, further away from base station, base station detects actual BLER>BLER_2=20%, and in available power
Limitation is lower to be in full power emission state, and base station instruction terminal reduces MCS=11 so that still far from the practical BLER after C points
It can control within BLER_2=20%.
VoLTE business in this example is often higher than common IP operation in the practical BLER of ascending idle port, and common IP industry
Business always maintains essentially in BLER_1 (being 10% in this example) in the practical BLER of LTE ascending idle port base stations；But due to
Requirement of this kind of speech businesses of VoLTE to frame error rate does not have common IP operation stringent, thus VoLTE business remain able to maintain compared with
Good quality.
Fig. 5 is the structure chart according to one embodiment of base station of the present invention.As shown in figure 5, the base station includes：Type of service
Judgment module 51, the type of service for judging terminal send the type of service of terminal；Upstream data acquisition module 52, is used for
The upstream data for receiving terminal obtains the upstream data BLER of terminal, sends BLER；MCS control modules 53 come from for receiving
The type of service of the terminal of type of service judgment module；Receive the BLER from upstream data acquisition module；
If type of service is voice service,：
Judge whether BLER is more than first threshold,
If BLER is more than first threshold, judge whether BLER is more than second threshold, wherein second threshold is more than first
Threshold value；
If BLER is more than second threshold, it indicates that terminal reduces MCS；
If BLER is not more than second threshold, the MCS of terminal is not adjusted, increases the transmission power of terminal so that terminal
Upstream data BLER be not more than first threshold；
If BLER is not more than first threshold, the MCS of terminal is not adjusted.
For example, first threshold is 10%, second threshold 20%.Voice service includes VoLTE business；And/or data
Class business includes IP internet business.
In one embodiment, MCS control modules are additionally operable to：If the business of terminal is data services,：
Judge whether the upstream data BLER of terminal is more than first threshold；
If it is, instruction terminal reduces MCS；
The upstream data BLER of terminal is made to be not more than first threshold if it is not, then carrying out power control to terminal.
If BLER is not more than first threshold, MCS control modules do not adjust the MCS of terminal, not to terminal rate of doing work tune
Whole instruction；Or power control is carried out to terminal, the upstream data BLER of terminal is made to be equal to first threshold.
Existing LTE ascending wireless resources management, by the way of a BLER desired value, using BLER as power control
Target, terminal, if BLER is higher than desired value, reduce MCS when transmission power reaches maximum under available power limits；
Two BLER desired values, BLER_1 and BLER_ can be arranged for specific transactions in one embodiment of the disclosure
2, and BLER_2>BLER_1；BLER_1 works as terminal transmission power under available power limitation and reaches most as power control target
Greatly, when and practical BLER is higher than BLER_1, as long as actual BLER is not higher than BLER_2, scheduler does not have to reduce MCS, but
The frame error rate requirement for more frequently retransmitting to ensure business by LTE system physical layer.
In an application examples, for VoLTE business, carries out wireless resource management using two BLER desired values and divide
Match, is BLER_1 and BLER_2 respectively (it is assumed that BLER_1 desired value=10%, and BLER_2 desired values>10%), wherein BLER_
2>BLER_1, BLER_1 are original BLER desired values, and BLER_2 be in order to this kind of particular services of VoLTE increase newly one
Controlling value.
When terminal establishes VoLTE business, is moved to the direction far from base station, if BLER_1 desired values cannot obtain
Meet, then base station judges according to following to determine whether to reduce the MCS of terminal：
If 1, actual BLER is less than or equal to BLER_2, instruction terminal does not reduce MCS for base station, and base station is not to terminal
Make the instruction of reduction MCS；
If 2, actual BLER is more than BLER_2, base station instruction terminal reduces MCS.
So far, LTE system ascending wireless resource control method according to the present invention and base station is described in detail.In order to
The design for avoiding the masking present invention, does not describe some details known in the field.Those skilled in the art are according to above
Description, completely it can be appreciated how implementing technical solution disclosed herein.
The method and system of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or
Software, hardware, firmware any combinations come realize the present invention method and system.The said sequence of the step of for the method
Merely to illustrate, the step of method of the invention, is not limited to sequence described in detail above, special unless otherwise
It does not mentionlet alone bright.In addition, in some embodiments, also the present invention can be embodied as to record program in the recording medium, these programs
Include for realizing machine readable instructions according to the method for the present invention.Thus, the present invention also covers storage for executing basis
The recording medium of the program of the method for the present invention.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that above example merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of long term evolution LTE system ascending wireless resource control method, which is characterized in that including：
Base station judges the business of terminal, determines that the business of terminal is voice service；
The base station obtains the upstream data Block Error Rate of the terminal；
The base station judges whether the upstream data Block Error Rate of the terminal is more than first threshold；
If the upstream data Block Error Rate of the terminal is more than the first threshold, the base station judges the uplink of the terminal
Whether data Block Error Rate is more than second threshold, wherein the second threshold is more than the first threshold；
If the upstream data Block Error Rate of the terminal is more than the second threshold, the base station indicates that the terminal reduces and adjusts
Encoding scheme MCS processed；
If the upstream data Block Error Rate of the terminal is not more than the second threshold, the base station increases the hair of the terminal
Penetrate power so that the upstream data Block Error Rate of the terminal is not more than the second threshold；If the upstream data of the terminal
Block Error Rate is not more than the first threshold, then the base station carries out the upper line number that power control makes the terminal to the terminal
It is not more than the first threshold according to Block Error Rate.
2. according to the method described in claim 1, it is characterized in that, further including：
The base station determines that the business of the terminal is data services；
The base station judges whether the upstream data Block Error Rate of the terminal is more than the first threshold；
If the upstream data Block Error Rate of the terminal is more than the first threshold, the base station indicates that the terminal reduces
MCS；
If the upstream data Block Error Rate of the terminal is not more than the first threshold, the base station carries out work(to the terminal
Rate controls so that the upstream data Block Error Rate of the terminal is not more than the first threshold.
3. method according to claim 1 or 2, which is characterized in that the first threshold is 10% and/or described second
Threshold value is 20%.
4. according to the method described in claim 2, it is characterized in that, the voice service includes VoLTE business；And/or institute
It includes IP internet business to state data services.
5. according to the method described in claim 1, it is characterized in that, the base station carries out power control to the terminal makes institute
The upstream data Block Error Rate for stating terminal includes no more than the first threshold：
The base station does not adjust to the terminal rate of doing work and indicates；
Or
The base station carries out power control to the terminal and the upstream data Block Error Rate of the terminal is made to be equal to first threshold
Value.
6. a kind of base station, which is characterized in that including：
Type of service judgment module, the type of service for judging terminal send the type of service of the terminal；
Upstream data acquisition module, the upstream data for receiving the terminal obtain the upstream data Block Error Rate of the terminal,
Send the Block Error Rate；
MCS control modules, the type of service for receiving the terminal from the type of service judgment module；Reception comes from
The Block Error Rate of the upstream data acquisition module；
If the type of service is voice service,：
Judge whether the Block Error Rate is more than first threshold,
If the Block Error Rate is more than the first threshold, judge whether the Block Error Rate is more than second threshold, wherein described
Second threshold is more than the first threshold；
If the Block Error Rate is more than the second threshold, it indicates that the terminal reduces Modulation and Coding Scheme MCS；
If the Block Error Rate is not more than the second threshold, the MCS of the terminal is not adjusted, increases the transmitting of the terminal
Power so that the upstream data Block Error Rate of the terminal is not more than the first threshold；
If the Block Error Rate is not more than the first threshold, the MCS of the terminal is not adjusted.
7. base station according to claim 6, which is characterized in that the MCS control modules are additionally operable to：
If the business of the terminal is data services,：
Judge whether the upstream data Block Error Rate of the terminal is more than first threshold；
If it is, indicating that the terminal reduces MCS；
The upstream data Block Error Rate of the terminal is made to be not more than described first if it is not, then carrying out power control to the terminal
Threshold value.
8. the base station described according to claim 6 or 7, which is characterized in that the first threshold is 10% and/or described second
Threshold value is 20%.
9. base station according to claim 7, which is characterized in that the voice service includes VoLTE business；And/or institute
It includes IP internet business to state data services.
10. base station according to claim 7, which is characterized in that if the Block Error Rate is not more than the first threshold,
The MCS control modules do not adjust the MCS of the terminal, do not adjust and indicate to the terminal rate of doing work；Or to the terminal
Carrying out power control makes the upstream data Block Error Rate of the terminal be equal to the first threshold.
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| CN109302750A (en) * | 2017-07-24 | 2019-02-01 | 中国移动通信集团广东有限公司 | Method of adjustment, device, equipment and the storage medium of adaptive convergence scheduling feature |
| CN109981483A (en) * | 2017-12-27 | 2019-07-05 | 中国移动通信集团山东有限公司 | A kind of LTE dispatching method and device towards the perception of parcel real time business |
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| CN1627655A (en) * | 2003-12-11 | 2005-06-15 | 上海贝尔阿尔卡特股份有限公司 | Implementation method for controlling power in external ring |
| CN101087287A (en) * | 2006-06-05 | 2007-12-12 | 中兴通讯股份有限公司 | A self-adapted modulation and encoding method for orthogonal frequency division multiplexing system |
| CN101494515A (en) * | 2008-01-22 | 2009-07-29 | 中兴通讯股份有限公司 | Down self-adapting modulation coding method and base station of OFDM system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1627655A (en) * | 2003-12-11 | 2005-06-15 | 上海贝尔阿尔卡特股份有限公司 | Implementation method for controlling power in external ring |
| CN101087287A (en) * | 2006-06-05 | 2007-12-12 | 中兴通讯股份有限公司 | A self-adapted modulation and encoding method for orthogonal frequency division multiplexing system |
| CN101494515A (en) * | 2008-01-22 | 2009-07-29 | 中兴通讯股份有限公司 | Down self-adapting modulation coding method and base station of OFDM system |
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