CN104837192A - Load-based power control method and device - Google Patents
Load-based power control method and device Download PDFInfo
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- CN104837192A CN104837192A CN201410048616.6A CN201410048616A CN104837192A CN 104837192 A CN104837192 A CN 104837192A CN 201410048616 A CN201410048616 A CN 201410048616A CN 104837192 A CN104837192 A CN 104837192A
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Abstract
The invention provides a load-based power control method and a load-based power control device. Network side equipment obtains a load condition of a current cell to which user equipment UE is accessed, a BLER actual value of the UE is monitored and obtained, the network side equipment determines current working states of the cell according to the load condition and a preset working state judgment condition, the working states comprises a high-load state and a low-load state, the network side equipment determines BLER target values corresponding to the working states and adjusts a current SIR value according to the BLER actual value and the BLER target values to obtain the SIR target value, and the network side equipment determines target emitting power of the UE according to the SIR target value and sends an indication message to the UE, so current emitting power of the UE is adjusted into target emitting power. On the basis of the load condition of the cell to which the UE is accessed, the emitting power of the UE is adjusted, the object of adaptive adjustment of the UE emitting power is achieved, and flexibility of power control is improved.
Description
Technical field
The present invention relates to the communication technology, particularly relate to a kind of Poewr control method based on load and device.
Background technology
In a communications system, often need to control the transmitting power of subscriber equipment (User Equipment is called for short UE), to improve the capacity of communication system and to ensure the service quality of user.Usual at present fixing power contorl parameters is set for a certain community, then adopts the transmitting power of this power contorl parameters preset to the UE of access community to control.
But the method based on above-mentioned static state setting power contorl parameters adjusts the transmitting power of UE, can not meet different loads lower network side to the requirement of the transmitting power of UE, flexibility and the adaptivity of power control are poor.
Summary of the invention
The invention provides a kind of Poewr control method based on load and device, in order to solve existing in adjust the transmitting power of UE based on the method for above-mentioned static state setting power contorl parameters, different loads lower network side apparatus can not be met to the problem of the requirement of the transmitting power of UE.
To achieve these goals, the invention provides a kind of Poewr control method based on load, comprising:
Network equipment obtains the loading condition of the current area of user equipment (UE) access;
Described network equipment is monitored and is obtained the bLock error rate BLER actual value of described UE;
Described network equipment, according to described loading condition and the operating state decision condition preset, determines the current residing operating state in described community; Wherein said operating state comprises high load condition and low load condition;
Described network equipment determines the BLER desired value corresponding with described operating state;
Described network equipment is according to described BLER actual value and described BLER desired value, and adjustment current demand signal interference ratio sir value obtains sir target value;
Described network equipment determines the target transmit power of described UE according to described sir target value;
Described network equipment sends Indication message to described UE, to make described UE, current transmitting power is adjusted to described target transmit power.
To achieve these goals, the invention provides a kind of output control device based on load, comprising:
Acquisition module, for obtaining the loading condition of the current area of user equipment (UE) access;
Monitoring modular, for monitoring and obtaining the bLock error rate BLER actual value of described UE;
First determination module, for according to described loading condition and the operating state decision condition preset, determines the current residing operating state in described community; Wherein said operating state comprises high load condition and low load condition;
Second determination module, for determining the bLock error rate BLER desired value corresponding with described operating state;
Adjusting module, for according to described BLER actual value and described BLER desired value, adjusts current demand signal interference ratio sir value and obtains sir target value;
3rd determination module, for determining the target transmit power of described UE according to described sir target value;
Sending module, for sending Indication message to described UE, is adjusted to described target transmit power to make described UE by current transmitting power.
A kind of Poewr control method based on load provided by the invention and device, network equipment obtains the loading condition of the current area of user equipment (UE) access, monitor and obtain bLock error rate (the BlockError Ratio of UE, be called for short BLER) actual value, network equipment is according to loading condition and the operating state decision condition preset, determine the current residing operating state in community, wherein said operating state comprises high load condition and low load condition, determine the BLER desired value corresponding with described operating state, network equipment is according to BLER actual value and BLER desired value, adjustment current demand signal interference ratio (Signal toInterference Ratio, being called for short SIR) value obtains sir target value, the target transmit power of UE is determined according to sir target value, network equipment sends Indication message to UE, to make UE, current transmitting power is adjusted to described target transmit power.The loading condition that in the present invention, network equipment accesses community based on UE, adjusts the transmitting power of UE, achieves the object according to cell load self-adaptative adjustment UE transmitting power, and improves the flexibility of power control.
Accompanying drawing explanation
The schematic diagram of a kind of Poewr control method based on load that Fig. 1 provides for the embodiment of the present invention;
The another kind that Fig. 2 provides for the embodiment of the present invention is based on the schematic diagram of the Poewr control method of load;
The structural representation of a kind of output control device based on load that Fig. 3 provides for the embodiment of the present invention;
The structural representation of a kind of 3rd determination module that Fig. 4 provides for the embodiment of the present invention;
The another kind that Fig. 5 provides for the embodiment of the present invention is based on the structural representation of the output control device of load.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Embodiment one
The schematic diagram of a kind of Poewr control method based on load that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, should comprise the following steps based on the Poewr control method of load:
101, network equipment obtains the loading condition of the current area of user equipment (UE) access.
In the present embodiment, the number of users of the access in the current area that network equipment is accessed by UE, code resources occupation rate, power and/or disturbed condition, can get the loading condition of current area.
102, network equipment is monitored and is obtained the BLER actual value of UE.
In the present embodiment, network equipment is monitored UE, gets the BLER actual value of UE according to monitoring result.Particularly, the transmission channel of network equipment to UE place is monitored, and obtains the BLER actual value of this UE.
103, network equipment is according to loading condition and the operating state decision condition preset, and determines the current residing operating state in described community.
Wherein said operating state comprises high load condition and low load condition.
In advance operating state Rule of judgment is set at network equipment in the present embodiment.Such as, when the number of users by reality access current in community weighs cell load, the then corresponding operating state decision condition preset is: if the number of users of actual access exceeds default first user number, then judge that operating state is as high load condition; If the number of users of actual access lower than the second number of users preset, then judges that operating state is as low load condition.
Such as, when by weighing cell load when former code resources occupation rate in community, the then corresponding operating state decision condition preset is: if when former code resources occupation rate exceeds first yard of default resources occupation rate, then judge that operating state is as high load condition; If when former code resources occupation rate is lower than the second code resources occupation rate preset, then judge that operating state is as low load condition.
Such as, when by weighing cell load when former code resources occupation rate in community, the then corresponding operating state decision condition preset is: if when former code resources occupation rate exceeds first yard of default resources occupation rate, then judge that operating state is as high load condition; If when former code resources occupation rate is lower than the second code resources occupation rate preset, then judge that operating state is as low load condition.
Such as, when weighing cell load by intracell power/disturbed condition, the then corresponding operating state decision condition preset is: if current power value/interference value exceeds the first default performance number/interference value, then judge that operating state is as high load condition; Current power value/interference value lower than the second performance number/interference value preset, then judges that operating state is as low load condition.
Need to illustrate, when network equipment adopts different factors to weigh the loading condition of current area, the operating state decision condition correspondingly preset is not identical yet herein.
After getting the loading condition of current area, according to loading condition and the operating state decision condition preset, determine the current residing operating state in this community.
104, network equipment determines the BLER desired value corresponding with described operating state.
In practical application, Different periods community has different loading conditions, and under generally different loading conditions, the transmitting power of network side to UE has different requirements.In order to meet network side demand to the transmitting power of UE in different loads situation, network side is that high load condition and low load condition two kinds of operating states arrange corresponding BLER desired value respectively.Particularly, if described operating state is high load condition, then corresponding with a described high load condition BLER desired value is as described BLER desired value; If described operating state is low load condition, then using the two BLER desired value corresponding with described low load condition as described BLER desired value.
105, network equipment is according to BLER actual value and BLER desired value, and adjustment current demand signal interference ratio sir value obtains sir target value.
In reality when network equipment adjusts current sir value, the transmitting power of UE can correspondingly change, and after the transmit power variation of UE, the BLER actual value of the UE monitored will change.
Particularly, after getting BLER actual value, BLER actual value and BLER desired value compare by network equipment, adjust current SIR-target value according to comparative result.In the present embodiment, if actual BLER is higher than BLER desired value, then adjust upward sir target value.If actual BLER is lower than BLER desired value, then adjust sir target value downwards.
106, network equipment determines the target transmit power of UE according to sir target value.
In the present embodiment, network equipment obtains current Interference Signal Code Power (the InterferenceSignal Code Power of ascending time slot, be called for short ISCP), then according to adjustment surplus, current I SCP and the sir target value preset, the expectation transmitting power of the UE corresponding with sir target value is calculated.Network equipment obtains the path loss of UE, according to path loss and the expectation transmitting power of UE, calculates target transmit power.
In the present embodiment, the formula of concrete calculation expectation transmitting power is:
PRX=SIR
Target+ISCP+C
Wherein, SIR
targetfor up sir target value, ISCP is the measured value of the ISCP of ascending time slot, and C is adjustment surplus.
Wherein, C=Margin+Gain; Margin is the uplink interference surplus of configuration, and Gain is the upstream multi-antenna receiving gain offset of configuration, and PRX is the uplink transmission power that network equipment is expected to receive.
In the present embodiment, the concrete formula calculating target transmit power is:
P=PRX+L
Wherein, L is the path path loss of UE, and P is the target transmit power of UE.
As shown from the above formula, when after the adjustment of sir target value, the transmitting power of UE will correspondingly change, and further after transmitting power changes, the BLER actual value of UE also can change, thus BLER actual value constantly can be approached BLER desired value.
107, network equipment sends Indication message to UE, to make UE, current transmitting power is adjusted to target transmit power.
The Poewr control method based on load that the present embodiment provides, also comprises:
When UE initial access network, in order to improve the success rate that UE initially accesses, network equipment is that high load condition and low load condition arrange an initial SIR target value respectively.
When current area is in high load condition, because the user accessing community is more, in order to the successful access network of UE energy can be made, wish that network equipment can tolerate higher BLER, for UE establishes a higher initial BLER desired value, reduce the transmitting power of UE, reduce that interference is competing lifts, thus reduce overall interference, improve the probability that UE successfully accesses community.
When current area is in low load condition, less owing to accessing the user of community, in order to make UE can successful access network and ensure as the higher service quality of UE raising, network equipment be that UE establishes a lower initial BLER desired value, lifting transmitting power, promotes user awareness.
The Poewr control method based on load that the present embodiment provides, network equipment obtains the loading condition of the current area of user equipment (UE) access, monitor and obtain the BLER actual value of UE, according to loading condition and the operating state decision condition preset, determine the current residing operating state in community, wherein said operating state comprises high load condition and low load condition, network equipment determines the BLER desired value corresponding with described operating state, according to BLER actual value and BLER desired value, adjust current sir value and obtain sir target value, network equipment determines the target transmit power of UE according to sir target value, Indication message is sent to UE, to make UE, current transmitting power is adjusted to described target transmit power.The loading condition that in the present embodiment, network equipment accesses community based on UE, adjusts the transmitting power of UE, achieves the object according to cell load self-adaptative adjustment UE transmitting power, and improves the flexibility of power control.
Embodiment two
The another kind that Fig. 2 provides for the embodiment of the present invention is based on the schematic diagram of the Poewr control method of load.As shown in Figure 2, should comprise the following steps based on the Poewr control method of load:
201, network equipment obtains the loading condition of the current area of user equipment (UE) access.
202, network equipment is monitored and is obtained the BLER actual value of UE.
Step 201 ~ step 202 can be recorded see relevant in above-described embodiment one step 101 ~ step 102, repeats no more herein.
203, network equipment is according to loading condition and default operating condition decision condition, determines the current residing operating state in community.
Wherein, described operating state comprises high load condition and low load condition.
About the operating state decision condition preset, see the record of related content in step 203 in above-described embodiment one, can repeat no more herein.
If determine that described operating state is high load condition in step 203, in the present embodiment, network equipment performs step 204, if determine that described operating state is low load condition in step 203, in the present embodiment, network equipment performs step 210.
If 204 described operating states are high load condition, network equipment using a BLER desired value corresponding with high load condition as BLER desired value.
In practical application, Different periods community has different loading conditions, and under generally different loading conditions, the transmitting power of network side to UE has different requirements.In order to meet network side demand to the transmitting power of UE in different loads situation, network side is that high load condition and low load condition two kinds of operating states arrange corresponding BLER desired value respectively.When described operating state is high load condition in the present embodiment, a BLER desired value corresponding with high load condition is as described BLER desired value.
205, network equipment obtains the first difference between BLER actual value and a BLER desired value.
The BLER actual value that network equipment gets and a BLER desired value make difference, obtain the first difference between BLER actual value and a BLER desired value.
206, network equipment determines the relation of the first difference and the first default scope.
Wherein said first scope comprises the first lower limit and first upper limit.
In the present embodiment, pre-set the first scope that high load condition is corresponding.After getting the first difference, network equipment determines the relation of the first difference and the first default scope, namely network equipment judges the first difference whether in the first scope preset, if described first difference is in the first scope, illustrate that BLER actual value approaches a BLER desired value, network equipment does not adjust current SIR, maintains the current transmit power of UE.If described first difference is outside the first scope, network equipment needs the relation of judgement first difference and the first lower limit and first upper limit.
If 207 first differences are lower than the first lower limit, network equipment raises step-length according to preset first and adjusts upward current sir value, until the first difference again obtained is in the first scope.
When network equipment adjustment sir value, the transmitting power of UE will correspondingly change, and when after transmit power variation, the BLER actual value of the UE that network equipment monitors will change.
Judging that the first difference is lower than first time in limited time, illustrates that the current BLER actual value of UE is lower than the BLER desired value preset, network equipment needs to increase current sir value, strengthens the transmitting power of UE, thus the BLER actual value of reduction bLock error rate and UE.
Particularly, network equipment raises step-length according to preset first and adjusts upward current sir value, namely increases sir value.After sir value increases, the transmitting power of UE also will correspondingly increase, thus reduces the BLER actual value monitored.When BLER actual value reduces, and the first difference between a BLER desired value diminishes, thus makes the first difference move closer to the first scope, until the first difference again obtained is in the first scope in the present embodiment, network equipment stops adjustment SIR.
If 208 first differences are higher than first upper limit, network equipment is lowered step-length according to preset first and is adjusted current sir value downwards, until the first difference again obtained is in the first scope.
To judge on the first difference is higher than first in limited time, illustrates that the current BLER actual value of UE is higher than the BLER desired value preset, network equipment needs to reduce current sir value, to reduce the transmitting power of UE, thus the BLER actual value of increase bLock error rate and UE.
Particularly, network equipment is lowered step-length according to preset first and is adjusted current sir value downwards, namely reduces sir value.After sir value diminishes, the transmitting power of UE also will correspondingly diminish, and the BLER actual value monitored like this will raise.After BLER actual value raises, and the first difference between a BLER desired value diminishes, and the first difference moves closer to the first scope, until the first difference again obtained is in the first scope in the present embodiment, network equipment stops adjustment SIR.
209, network equipment will again obtain and sir value corresponding to the first difference in the first scope as sir target value.
If 210 described operating states are low load condition, network equipment using the two BLER desired value corresponding with low load condition as BLER desired value.
If determine that described operating state is low load condition, in the present embodiment using the two BLER desired value corresponding with low load condition as described BLER desired value.
211, network equipment obtains the second difference between BLER actual value and the 2nd BLER desired value.
The BLER actual value got and the 2nd BLER desired value are made difference by network equipment, obtain the second difference between BLER actual value and the 2nd BLER desired value.
212, network equipment determines the relation of the second difference and the second default scope.
Wherein said second scope comprises the second lower limit and second upper limit.
In the present embodiment, pre-set the second scope that low load condition is corresponding.After getting the second difference, network equipment determines the relation of the second difference and the second default scope, namely network equipment judges the second difference whether in the second scope preset, if described second difference is in the second scope, illustrate that BLER actual value approaches the 2nd BLER desired value, network equipment does not adjust current SIR, maintains the current transmit power of UE.If described second difference is outside the second scope, network equipment needs the relation of judgement second difference and the second lower limit and second upper limit.If the second difference is lower than the second lower limit, perform step 213; If the second difference is higher than second upper limit, perform step 214.
If 213 second differences are lower than the second lower limit, network equipment raises step-length according to preset second and adjusts upward current sir value, until the second difference again obtained is in the second scope.
Judging that the second difference is lower than second time in limited time, illustrates that the current BLER actual value of UE is lower than the 2nd BLER desired value preset, network equipment needs to increase current sir value, strengthens the transmitting power of UE, thus the BLER actual value of reduction bLock error rate and UE.
Particularly, network equipment raises step-length according to preset second and adjusts upward current sir value, namely increases sir value.After sir value increases, the transmitting power of UE also will correspondingly increase, thus reduces the BLER actual value monitored.After BLER actual value reduces, and the second difference between the 2nd BLER desired value diminishes, and makes the second difference move closer to the first scope, until the second difference again obtained is in the second scope in the present embodiment, network equipment stops adjustment SIR.
If 214 second differences are higher than second upper limit, network equipment is lowered step-length according to preset second and is adjusted current sir value downwards, until the second difference again obtained is in the second scope.
To judge on the second difference is higher than second in limited time, illustrates that the current BLER actual value of UE is higher than the 2nd BLER desired value preset, network equipment needs to reduce current sir value, to reduce the transmitting power of UE, and the BLER actual value of increase bLock error rate and UE.
Particularly, network equipment is lowered step-length according to preset second and is adjusted current sir value downwards, namely reduces sir value.After sir value diminishes, the transmitting power of UE also will correspondingly diminish, and the BLER actual value monitored like this will raise.After BLER actual value raises, and the second difference between the 2nd BLER desired value diminishes, and the second difference moves closer to the second scope, until the second difference again obtained is in the second scope in the present embodiment, network equipment stops adjustment SIR.
215, network equipment will again obtain and sir value corresponding to the second difference in the second scope as sir target value.
216, network equipment determines the target transmit power of UE according to sir target value.
Step 217, see the record of step 106 related content in above-described embodiment one, repeats no more herein.
217, network equipment sends Indication message to UE, to make UE, current transmitting power is adjusted to target transmit power.
In the present embodiment, network equipment obtains the loading condition of the current area of user equipment (UE) access, monitor and obtain the BLER actual value of UE, according to loading condition and the operating state decision condition preset, determine the current residing operating state in community, wherein said operating state comprises high load condition and low load condition, network equipment determines the BLER desired value corresponding with described operating state, network equipment is according to BLER actual value and BLER desired value, adjust current sir value and obtain sir target value, the target transmit power of UE is determined according to sir target value, network equipment sends Indication message to UE, to make UE, current transmitting power is adjusted to described target transmit power.The loading condition that in the present embodiment, network equipment accesses community based on UE, adjusts the transmitting power of UE, achieves the object according to cell load self-adaptative adjustment UE transmitting power, and improves the flexibility of power control.
Embodiment three
The structural representation of a kind of output control device based on load that Fig. 3 provides for the embodiment of the present invention.As shown in Figure 3, this device comprises: acquisition module 31, monitoring modular 32, first determination module 33, second determination module 34, adjusting module 35, the 3rd determination module 36 and sending module 37.
In the present embodiment, the number of users of the access in the current area that acquisition module 31 is accessed by UE, code resources occupation rate, power and/or disturbed condition, can get the loading condition of current area.
In advance operating state Rule of judgment is set at network side in the present embodiment.About the operating state Rule of judgment preset, see the record of related content in above-described embodiment one, can repeat no more herein.Need to illustrate, when network side adopts different factors to weigh the loading condition of current area, the operating state decision condition correspondingly preset is not identical yet herein.
Further, monitoring modular 32 couples of UE monitor, and get the BLER actual value of UE according to monitoring result.Particularly, the transmission channel at monitoring modular 32 pairs of UE places is monitored, and obtains the BLER actual value of this UE.
The first determination module 33 be connected with acquisition module 31, for after getting the loading condition of current area, according to loading condition and the operating state decision condition preset, determines the current residing operating state in described community.Wherein, described operating state comprises high load condition and low load condition.
In practical application, Different periods community has different loading conditions, and under generally different loading conditions, the transmitting power of network side to UE has different requirements.In order to meet network side demand to the transmitting power of UE in different loads situation, network side is that high load condition and low load condition two kinds of operating states arrange corresponding BLER desired value respectively.
First determination module 33 is connected with the second determination module 34, if the first determination module 33 determines that described operating state is high load condition, then the second determination module 34 using a BLER desired value corresponding with described high load condition as described BLER desired value.If the first determination module 33 determines that described operating state is low load condition, then the second determination module 34 using the two BLER desired value corresponding with described low load condition as described BLER desired value.
Monitoring modular 32 is connected with modulation module 35 respectively with the second determination module 34, and modulation module 35 is according to BLER actual value and BLER desired value, and adjustment current demand signal interference ratio sir value obtains sir target value.After getting BLER actual value, BLER actual value and BLER desired value compare by modulation module 35, adjust current SIR-target value according to comparative result.
When modulation module 35 adjusts current sir value, the transmitting power of UE correspondingly changes, and after the transmit power variation of UE, the BLER actual value of the UE that monitoring modular 32 monitors will change.In the present embodiment, if actual BLER is higher than BLER desired value, then modulation module 35 adjusts upward sir target value, to reduce BLER actual value, makes BLER constantly approach BLER desired value.If actual BLER is lower than BLER desired value, then adjusts sir target value downwards, to increase BLER actual value, make BLER constantly approach BLER desired value.
The 3rd determination module 36 be connected with adjusting module 35, after adjusting module 35 gets sir target value, determines the target transmit power of UE according to sir target value.
The structural representation of a kind of 3rd determination module that Fig. 4 provides for the embodiment of the present invention.As shown in Figure 4, the 3rd determination module 36 comprises: acquiring unit 361 and computing unit 362.
Wherein, acquiring unit 361 is for obtaining the current Interference Signal Code Power ISCP of ascending time slot, and the path loss of described UE.Adjustment surplus, described current I SCP and described sir target value that computing unit 362 is preset for basis, calculate the expectation transmitting power of the described UE corresponding with described sir target value, and according to the path loss of described UE and described expectation transmitting power, calculate described target transmit power.About computational process and the formula of expecting transmitting power and target transmit power, see the record of related content in above-described embodiment one, can repeat no more herein.
The sending module 37 be connected with the 3rd determination module 36, after determining target transmit power, sends Indication message to UE, to make UE, current transmitting power is adjusted to described target transmit power.
The output control device based on load that the present embodiment provides obtains the loading condition of the current area of user equipment (UE) access, according to loading condition and the operating state decision condition preset, determine the current residing operating state in community, wherein said operating state comprises high load condition and low load condition, determine the BLER desired value corresponding with described operating state, monitor and obtain the BLER actual value of UE, according to BLER actual value and BLER desired value, adjust current sir value and obtain sir target value, the target transmit power of UE is determined according to sir target value, Indication message is sent to UE, to make UE, current transmitting power is adjusted to described target transmit power.The present embodiment accesses the loading condition of community based on UE, adjusts, achieve the object according to cell load self-adaptative adjustment UE transmitting power to the transmitting power of UE, and improves the flexibility of power control.
Embodiment four
The another kind that Fig. 5 provides for the embodiment of the present invention is based on the structural representation of the output control device of load.As shown in Figure 5, this device comprises: the acquisition module 31 in above-described embodiment, monitoring modular 32, first determination module 33, second determination module 34, adjusting module 35, the 3rd determination module 36 and sending module 37.
Acquisition module 31, for obtaining the loading condition of the current area of user equipment (UE) access.
Further, monitoring modular 32, for monitoring and obtaining the BLER actual value of UE.
The first determination module 33 be connected with acquisition module 31, for according to loading condition and the operating state decision condition preset, determines the current residing operating state in community.
Wherein, described operating state comprises high load condition and low load condition.
In practical application, Different periods community has different loading conditions, and under generally different loading conditions, the transmitting power of network side to UE has different requirements.In order to meet network side demand to the transmitting power of UE in different loads situation, network side is that high load condition and low load condition two kinds of operating states arrange corresponding BLER desired value respectively.
The second determination module 34 be connected with the first determination module 33, for determining the BLER desired value corresponding with described operating state.
The adjusting module 35 be connected with monitoring modular 32 and the second determination module 34, for according to described BLER actual value and described BLER desired value, adjusts current sir value and obtains sir target value.
When adjusting module 35 adjusts sir value, the transmitting power of UE will correspondingly change, and when after transmit power variation, the BLER actual value of the UE that monitoring modular 32 monitors also can correspondingly change.
Wherein, the optional implementation structure mode of the one of adjusting module 35 comprises: difference acquiring unit 351, judging unit 352, adjustment unit 353 and determining unit 354.
After the first determination module 33 determines that operating state is high load condition, the second determination module 34 using a BLER desired value corresponding with high load condition as BLER desired value.
Further, difference acquiring unit 351 obtains BLER actual value and a BLER desired value does difference, obtains the first difference between BLER actual value and a BLER desired value.
The judging unit 352 be connected with difference acquiring unit 351, for judging the first difference whether in the first scope preset, wherein said first scope comprises the first lower limit and first upper limit.
In the present embodiment, pre-set the first scope that high load condition is corresponding.If described first difference is in the first scope, illustrate that BLER actual value approaches a BLER desired value, adjustment unit 353 does not adjust current SIR, maintains the current transmit power of UE.If described first difference is outside the first scope, judging unit 352 needs the relation of judgement first difference and the first lower limit and first upper limit.Judging that the first difference lower than first time in limited time, illustrate that the current BLER actual value of UE is lower than the BLER desired value preset, adjustment unit 353 needs to increase current sir value, strengthens the transmitting power of UE, thus reduces the BLER actual value of bLock error rate and UE.
Particularly, adjustment unit 353 raises step-length according to preset first and adjusts upward current sir value, namely increases sir value.After sir value increases, the transmitting power of UE also will correspondingly increase, thus reduces the BLER actual value monitored.When BLER actual value reduces, and the first difference between a BLER desired value diminishes, thus makes the first difference move closer to the first scope, until the first difference again obtained is in the first scope in the present embodiment, adjustment unit 353 stops adjustment SIR.
Judging to prescribe a time limit on the first difference is higher than first, illustrate that the current BLER actual value of UE is higher than the BLER desired value preset, adjustment unit 353 needs to reduce current sir value, to reduce the transmitting power of UE, thus increases the BLER actual value of bLock error rate and UE.
Particularly, adjustment unit 353 is lowered step-length according to preset first and is adjusted current sir value downwards, namely reduces sir value.After sir value diminishes, the transmitting power of UE also will correspondingly diminish, and the BLER actual value monitored like this will raise.After BLER actual value raises, and the first difference between a BLER desired value diminishes, and the first difference moves closer to the first scope, until the first difference again obtained is in the first scope in the present embodiment, adjustment unit 353 stops adjustment SIR.
Further, determining unit 354 will again obtain and sir value corresponding to the first difference in the first scope as sir target value.
After the first determination module 33 determines that operating state is low load condition, the second determination module 34 using the two BLER desired value corresponding with low load condition as BLER desired value.
The BLER actual value got and the 2nd BLER desired value are done difference by difference acquiring unit 351, obtain the second difference between BLER actual value and the 2nd BLER desired value.
Further, judging unit 352 judges the second difference whether in the second scope preset.Wherein said second scope comprises the second lower limit and second upper limit.
In the present embodiment, pre-set the second scope that low load condition is corresponding.If described second difference is in the second scope, illustrates that BLER actual value approaches the 2nd BLER desired value, current SIR is not adjusted, maintain the current transmit power of UE.If described second difference is outside the second scope, judging unit 352 needs the relation of judgement second difference and the second lower limit and second upper limit.
Judging that the second difference lower than second time in limited time, illustrate that the current BLER actual value of UE is lower than the 2nd BLER desired value preset, adjustment unit 353 needs to increase current sir value, strengthens the transmitting power of UE, thus reduces the BLER actual value of bLock error rate and UE.
Particularly, adjustment unit 353 raises step-length according to preset second and adjusts upward current sir value, namely increases sir value.After sir value increases, the transmitting power of UE also will correspondingly increase, thus reduces the BLER actual value monitored.After BLER actual value reduces, and the second difference between the 2nd BLER desired value diminishes, and makes the second difference move closer to the first scope, until the second difference again obtained is in the second scope in the present embodiment, adjustment unit 353 stops adjustment SIR.
To judge on the second difference is higher than second in limited time, illustrates that the current BLER actual value of UE is higher than the 2nd BLER desired value preset, adjustment unit 353 needs to reduce current sir value, to reduce the transmitting power of UE, and the BLER actual value of increase bLock error rate and UE.
Particularly, adjustment unit 353 is lowered step-length according to preset second and is adjusted current sir value downwards, namely reduces sir value.After sir value diminishes, the transmitting power of UE also will correspondingly diminish, and the BLER actual value monitored like this will raise.After BLER actual value raises, and the second difference between the 2nd BLER desired value diminishes, and the second difference moves closer to the second scope, until the second difference again obtained is in the second scope in the present embodiment, adjustment unit 353 stops adjustment SIR.
Further, determining unit 354 will again obtain and sir value corresponding to the second difference in the second scope as sir target value.
Further, the 3rd determination module 36 be connected with determining unit 354, for determining the target transmit power of UE according to sir target value.
About function and the implementation structure mode of the 3rd determination module 36, see shown in the relevant record of above-described embodiment three and accompanying drawing 4, can repeat no more herein.
Further, the sending module 37 be connected with the 3rd determination module 36, for sending Indication message to UE, is adjusted to target transmit power to make UE by current transmitting power.
The output control device based on load that the present embodiment provides, also comprises: arrange module 30.This arranges module 30 for when UE initially accesses, for high load condition and low load condition arrange an initial SIR target value respectively.
When current area is in high load condition, because the user accessing community is more, in order to the successful access network of UE energy can be made, wish that network side can tolerate higher BLER, arranging module 30 for UE establishes a higher initial BLER desired value, reduces the transmitting power of UE, and then reduces that interference is competing lifts, thus reduce overall interference, improve the probability that UE successfully accesses community.
When current area is in low load condition, less owing to accessing the user of community, in order to make UE can successful access network and ensure as the higher service quality of UE raising, module 30 be set for UE and establishes a lower initial BLER desired value, lifting transmitting power, promotes user awareness.
The output control device based on load that the present embodiment provides, obtain the loading condition of the current area of user equipment (UE) access, monitor and obtain the BLER actual value of UE, according to loading condition and the operating state decision condition preset, determine the current residing operating state in community, wherein said operating state comprises high load condition and low load condition, determine the BLER desired value corresponding with described operating state, according to BLER actual value and BLER desired value, adjust current sir value and obtain sir target value, the target transmit power of UE is determined according to sir target value, Indication message is sent to UE, to make UE, current transmitting power is adjusted to described target transmit power.The present embodiment accesses the loading condition of community based on UE, adjusts, achieve the object according to cell load self-adaptative adjustment UE transmitting power to the transmitting power of UE, and improves the flexibility of power control.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (16)
1. based on a Poewr control method for load, it is characterized in that, comprising:
Network equipment obtains the loading condition of the current area of user equipment (UE) access;
Described network equipment is monitored and is obtained the bLock error rate BLER actual value of described UE;
Described network equipment, according to described loading condition and the operating state decision condition preset, determines the current residing operating state in described community; Wherein said operating state comprises high load condition and low load condition;
Described network equipment determines the BLER desired value corresponding with described operating state;
Described network equipment is according to described BLER actual value and described BLER desired value, and adjustment current demand signal interference ratio sir value obtains sir target value;
Described network equipment determines the target transmit power of described UE according to described sir target value;
Described network equipment sends Indication message to described UE, to make described UE, current transmitting power is adjusted to described target transmit power.
2. the Poewr control method based on load according to claim 1, is characterized in that, if described operating state is described high load condition, then using a BLER desired value corresponding with described high load condition as described BLER desired value;
If described operating state is described low load condition, then using the two BLER desired value corresponding with described low load condition as described BLER desired value.
3. the Poewr control method based on load according to claim 2, it is characterized in that, if described operating state is described high load condition, then described network equipment is according to described BLER actual value and described BLER desired value, adjustment is carried out to current sir value and obtains sir target value, comprising:
Described network equipment obtains the first difference between described BLER actual value and a described BLER desired value;
Described network equipment judges described first difference whether in the first scope preset; Wherein said first scope comprises the first lower limit and first upper limit;
If described first difference is less than described first lower limit, described network equipment raises step-length according to preset first and adjusts upward described current sir value, until described first difference again obtained is in described first scope;
Described network equipment will again obtain and sir value corresponding to described first difference in described first scope as described sir target value.
4. the Poewr control method based on load according to claim 3, is characterized in that, also comprise:
If described first difference is greater than described first upper limit, described network equipment is lowered step-length according to preset first and is adjusted described current sir value downwards, until described first difference again obtained is in described first scope;
Described network equipment will again obtain and sir value corresponding to described first difference in described first scope as described sir target value.
5. the Poewr control method based on load according to claim 2, it is characterized in that, if described operating state is described low load condition, then described network equipment is according to described BLER actual value and described BLER desired value, adjustment is carried out to current sir value and obtains sir target value, comprising:
Described network equipment obtains the second difference between described BLER actual value and described 2nd BLER desired value;
Described network equipment judges described second difference whether in the second scope preset; Wherein said second scope comprises the second lower limit and second upper limit;
If described second difference is less than described second lower limit, described network equipment raises step-length according to preset second and adjusts upward described current sir value, until described second difference again obtained is in described second scope;
Described network equipment will again obtain and sir value corresponding to described second difference in described second scope as described sir target value.
6. the Poewr control method based on load according to claim 5, is characterized in that, also comprise:
If described second difference is greater than described second upper limit, described network equipment is lowered step-length according to preset second and is adjusted described current sir value downwards, until described second difference again obtained is in described second scope;
Described network equipment will again obtain and sir value corresponding to described second difference in described second scope as described sir target value.
7. the Poewr control method based on load according to any one of claim 1-6, is characterized in that, described network equipment determines the target transmit power of described UE according to described sir target value, comprising:
Described network equipment obtains the current Interference Signal Code Power ISCP of ascending time slot;
Described network equipment, according to adjustment surplus, described current I SCP and the described sir target value preset, calculates the expectation transmitting power of the described UE corresponding with described sir target value;
Described network equipment obtains the path loss of described UE;
Described network equipment, according to the path loss of described UE and described expectation transmitting power, calculates described target transmit power.
8. the Poewr control method based on load according to claim 1, is characterized in that, also comprise:
Initially access the moment at described UE, described network equipment is that described high load condition and described low load condition arrange an initial SIR target value respectively.
9. based on an output control device for load, it is characterized in that, comprising:
Acquisition module, for obtaining the loading condition of the current area of user equipment (UE) access;
Monitoring modular, for monitoring and obtaining the bLock error rate BLER actual value of described UE;
First determination module, for according to described loading condition and the operating state decision condition preset, determines the current residing operating state in described community; Wherein said operating state comprises high load condition and low load condition;
Second determination module, for determining the BLER desired value corresponding with described operating state;
Adjusting module, for according to described BLER actual value and described BLER desired value, adjusts current demand signal interference ratio sir value and obtains sir target value;
3rd determination module, for determining the target transmit power of described UE according to described sir target value;
Sending module, for sending Indication message to described UE, is adjusted to described target transmit power to make described UE by current transmitting power.
10. the output control device based on load according to claim 9, it is characterized in that, described second determination module, for when described operating state is defined as described high load condition, using a BLER desired value corresponding with described high load condition as described BLER desired value, and be defined as described low load condition in described operating state, be described BLER desired value by the 2nd BLER desired value corresponding with described low load condition.
11. output control devices based on load according to claim 10, is characterized in that, if described operating state is described high load condition, then described adjusting module comprises:
Difference acquiring unit, for obtaining the first difference between described BLER actual value and a described BLER desired value;
Judging unit, for judging described first difference whether in the first scope preset; Wherein said first scope comprises the first lower limit and first upper limit;
Adjustment unit, if be less than described first lower limit for described first difference, raise step-length according to preset first and adjusts upward described current sir value, until described first difference again obtained is in described first scope;
Determining unit, for will again obtain and sir value corresponding to described first difference in described first scope as described sir target value.
12. output control devices based on load according to claim 11, it is characterized in that, described adjustment unit, if be also greater than described first upper limit for described first difference, lower step-length according to preset first and adjust described current sir value downwards, until described first difference again obtained is in described first scope.
13. output control devices based on load according to claim 11, is characterized in that, if described operating state is described low load condition, then:
Described difference acquiring unit, for obtaining the second difference between described BLER actual value and described 2nd BLER desired value;
Described judging unit, also for judging described second difference whether in the second scope preset; Wherein said second scope comprises the second lower limit and second upper limit;
Described adjustment unit, if be also less than described second lower limit for described second difference, raise step-length according to preset second and adjusts upward described current sir value, until described second difference again obtained is in described second scope;
Described determining unit, for will again obtain and sir value corresponding to described second difference in described second scope as described sir target value.
14. output control devices based on load according to claim 13, it is characterized in that, described adjustment unit, if be also greater than described second upper limit for described second difference, lower step-length according to preset second and adjust described current sir value downwards, until described second difference again obtained is in described second scope.
15. output control devices based on load according to any one of claim 9-14, it is characterized in that, described 3rd determination module comprises:
Acquiring unit, for obtaining the current Interference Signal Code Power ISCP of ascending time slot, and the path loss of described UE;
Computing unit, for adjustment surplus, described current I SCP and described sir target value that basis is preset, calculate the expectation transmitting power of the described UE corresponding with described sir target value, and according to the path loss of described UE and described expectation transmitting power, calculate described target transmit power.
16. output control devices based on load according to claim 9, is characterized in that, also comprise:
Module is set, for initially accessing the moment at described UE, for described high load condition and described low load condition arrange an initial SIR target value respectively.
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| CN201410048616.6A CN104837192A (en) | 2014-02-12 | 2014-02-12 | Load-based power control method and device |
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