CN102740346B - Method and device for triggering power headroom report - Google Patents
Method and device for triggering power headroom report Download PDFInfo
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- CN102740346B CN102740346B CN201110081992.1A CN201110081992A CN102740346B CN 102740346 B CN102740346 B CN 102740346B CN 201110081992 A CN201110081992 A CN 201110081992A CN 102740346 B CN102740346 B CN 102740346B
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- 238000007726 management method Methods 0.000 description 68
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- 238000013468 resource allocation Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/365—Power headroom reporting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
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Abstract
The invention provides a method and a device for triggering a power headroom report. The method is characterized in that: user equipment triggers a user equipment power headroom report according to user equipment power management influence and path loss influence after a power headroom report timer expires, wherein the user equipment power management influence is the power variation caused by user equipment power management and the path loss influence is path loss variation or the product of the path loss variation times a path loss compensation factor. In the invention, by taking into consideration both the user equipment power management influence and the path loss influence when triggering the user equipment power headroom report, the problem of inaccurate power headroom report in the prior art is solved, which enables a base station side to adjust power accurately according to the reported power headroom, thus saving power adjustment cost.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of power headroom reporting (PHR) triggering method and device.
Background technology
At present, with fixing or movement wireless telecommunications user equipment (for example, no wireless communication system uses electromagnetic wave
Line phone or the notebook with wireless communication card, apparatus such as computer are all referred to alternatively as user equipment) communicated.Typically come
Say, when carrying out radio communication, user equipment (User Equipment, abbreviation UE) be located at system wireless coverage it
Interior, and communicated with system by radio communication channel.Specifically, wave frequency is divided into multiple loads by radio communication channel
Wave frequency, a carrier frequency or multiple carrier frequency may be constructed wireless service areas.User equipment can pass through one
Or other equipment (for example the controlling network element or other users equipment) contact in multiple carrier wave homologous ray.
The network element that controls of wireless communication system can control other equipment according to the communication protocol/technique of system agreement.Control
Network element processed includes control station and network.Control station includes but is not limited to base station (Base Station, abbreviation BS), relay station
(Relay Station, abbreviation RS) and user equipment, when user equipment is used as control station, this user equipment can be basis
Pre-defined rule select in a user device as interim control station.Communication protocol/technique includes but is not limited to GSM
(Global System for Mobile Communications, global system for mobile communications), CDMA (Code Division
Multiple Access, CDMA), EDGE (Enhanced Data Rate for GSM Evolution, enhancement mode number
According to speed GSM evolution technology), CDMA2000, TD-SCDMA (Time Division-Synchronous Code Division
Multiple Access, TD SDMA), (High Speed Packet Access, high-speed packet connects HSPA
Enter), WCDMA (Wideband Code Division Multiple Access, WCDMA), EVDO (Evolution
Data Only, only evolution data), HSOPA (High Speed OFDM Packet Access, high speed Orthogonal frequency division multiplexing point
Group access), WiMAX (World Interoperability for Microwave Access, micro-wave access global inter communication),
LTE (Long Term Evolution, Long Term Evolution) and LTE-A (LTE-Advanced, Long Term Evolution-senior).
Wireless communication system can be provided in necessarily geographical scope using specified wireless channel by base station and wirelessly cover
Lid, this geographic range is referred to as cell.Generally, in theory, base station should be located at the central authorities of cell.Cover according to base station
The size of scope, base station is segmented into grand (Macro) base station, micro- (Pico) base station and slight (Femto) base station.In LTE/LTE-
In A system, base station also referred to as strengthens B node (eNodeB), and femto base station is also referred to as Home eNodeB or family strengthens B node
(Home eNodeB, abbreviation HeNodeB).
Additionally, in order to spread over or extend capacity, one or more relay stations can be placed on user equipment and base
Between standing.For user equipment, relay station is equivalent to a base station.Or, in the extremely many networks of number of user equipment
In, user equipment can also voluntarily form ad hoc network (or referred to as cluster), by certain user in ad hoc network
Equipment is managed as interim control station, assistance system, and interim control station can accept original control stand control, manages subordinate
User equipment.
The main process of the uplink power control of LTE is：
(1) UE receives TPC (transmitting power control, power control command)；
(2) UE (user equipment) carries out the measurement of downlink wireless channel pilot received power, calculates path loss
Pathloss, UE calculate transmission power P with parameters such as Pathloss, Uplink Shared Channel bandwidth, transport block format and TPC；As
Fruit user equipment triggers PHR (power headroom report, power headroom reporting (PHR)), and meets transmission condition, then UE
Also need to send PHR on Uplink Shared Channel.
(3) after eNodeB (evolved base station) receives Physical Uplink Shared Channel and/or PHR, by DCI Format 0/
The Physical Downlink Control Channel of 3/3A sends TPC to UE；Return execution step (1).
In system, UE adopts dynamic resource distribution mode, and adopts adaptive channel coding modulation mode
(adaptive modulation and coding, AMC), LTE UE uplink transmission power and resource allocation, coded modulation side
Formula is related, and therefore individually power control mode is also not enough to complete the Power Control task of LTE UE, by UE to eNodeB
As the resource budget information of PUSCH, carry out uplink resource allocation for eNodeB provides foundation to the PHR sending.If PHR
Reflect that UE has larger power headroom, then eNodeB can distribute more wireless resource block to UE；If PHR reflects
UE has not had power headroom, or does not have more power headroom, then eNodeB can only distribute less wireless resource block
Or low-order-modulated order is to UE.
In LTE system, UE is less than the TPC transmission frequency to UE for the eNodeB to the PHR transmission frequency of eNodeB.The transmission of PHR
Need two steps：It is triggering first, followed by report.When cycle PHR, intervalometer expired or path loss changes greatly UE
Or during PHR configuration/reconfiguration, triggering PHR reports, and after UE obtains the PUSCH resource being sufficiently used for PHR, UE is to eNodeB
Report PHR.
PHR is calculated as PH (i)=PCMAX-Pue,tx, PCMAXConfigure maximum transmission power (configured for UE
Maximum output power), the span of PCMAX_L≤PCMAX≤PCMAX_H, PCMAX mainly have limited by 2 kinds because
Element：1) it is limited to the control of eNodeB, such as in the little covering scene of micro-base station, eNodeB can control the emission maximum work(of UE
Rate, to reduce the interference to adjacent area for the UE；2) the useless out-of-band radiation (Out of band emission) of UE, such as in order to meet
SEM (Spectrum emission mask, spectrum emission mask (SEM)) and ACLR (Adjacent Channel Leakage
Ratio, adjacent band reveal ratio) etc. require, UE can design responsible wave filter, for reducing out-of-band radiation, or UE reduce
Big transmission power, the former can increase the cost of UE, latter reduces the uplink capacity of UE.Due to reducing transmission power (also referred to as
Back-off, power reduce, PR) method simply effective, it is outer that a large amount of UE can reach band when realizing using the method
The requirement of radiation.However, to insure that the up transmitting capacity of UE, do not allow UE unconfined reduction power, so that it cannot enter
The basic uplink service of row, the MPR (Maximum Power Reduction, peak power fallback value) allowing defined in agreement,
Size due to out-of-band radiation configures with the modulation /demodulation sending data, and the bandwidth taking has relation, and such as LTE is in agreement
In 36.101, it is provided with different MPR by different transmission bandwidth and modulation /demodulation pattern, as shown in table 1 below：Each UE can be by
The PR value realizing setting reality of itself, as long as meet PR≤MPR.
Table 1
It is contemplated that to after back-off, UE deducts reality on the basis of specified transmission power Ppowerclass
Back-off value, and it also requires after considering the maximum transmission power that above-mentioned network allows, take the minima in both to be real
The PCMAX on border.Pue,txFor the up theoretical emitted power of UE.In LTE, only consider the transmission power of PUSCH in PHR, so
Pue,tx=Pue,pusch, Pue,puschLTE is the transmission power of PUSCH, is defined as Pue,pusch=10log10(MPUSCH(i))+
PO_PUSCH(t)+α(t)·PL+ΔTF(i)+f (i), M thereinPUSCHI () is the transmission bandwidth of PUSCH by the MCS dispatching
(Modulation and Coding Scheme, modulating-coding form) configuration determines, PO_PUSCHT () adjusts for open loop power control
Value, α (t) are part path loss offset, t is semi-static variable, PL is path loss, ΔTFI () is transformat offset, f (i) is
Closed-loop power control adjusted value, that is, the transmission power of PUSCH is with the bandwidth of the occupancy resource of PUSCH, the path loss between UE and base station and
Open loop power control is related with the configuration of closed-loop power control.So PHR computing formula is PH (i)=PCMAX-{10log10(MPUSCH(i))+
PO_PUSCH(t)+α(t)·PL+ΔTF(i)+f(i)}.
PHR in units of dB, in formula, power is in units of dBm.
In LTE, the triggering (trigger) that PHR reports mainly has following three kinds of situations：
1) PHR forbids intervalometer (prohibitPHR-Timer) time-out, and path loss reports with respect to last PHR
When variable quantity is more than predetermined threshold dl-PathlossChange (unit is a decibel dB)；
2) PHR cycle timer (periodicPHR-Timer) time-out；
3) configuration of PHR functional entity or reconfigure；
After PHR is triggered, when UE has uplink scheduling resource can accommodate PHR, PHR is sent to eNB by UE.
With the development of communication system and technology, for improving systematic function, multi-carrier communications systems start appearance.Multicarrier
Technology includes various ways, and one of them is exactly carrier aggregation (Carrier Aggregation, CA).For example, in LTE-A system
In system, so-called carrier aggregation is it is simply that multiple component carrier (Component Carrier, CC) can condense together for carrying
For bigger bandwidth for transmission.One user terminal can receive according to the ability of oneself on one or more component carriers simultaneously
Or transmission data.
In multi-carrier systems, for some user, can there are a first carrier and one or more second
Carrier wave.First carrier is generally main carrier wave, can be with carrier signaling data, and the second carrier wave is mainly used in carrying data,
Can be with bearing part signaling.Carrier wave can be divided into up-link carrier (communicating for user equipment to control station number) and descending carrier
(communicating for control station to user device quantity).The wireless service areas of corresponding first carrier are first service area, corresponding second load
The wireless service areas of ripple are second service area.In different systems, first carrier, first service area and the second carrier wave, second
The concept of service area and title all can have corresponding details definition.For example in lte-a system, the user being configured with multicarrier sets
Standby only one of which RRM (Radio Resource Control, RRC) connection in net.Radio Resource connects to be built
When stand/re-establishing/switch generation, NAI mobile message and the service area (Serving Cell) of safety input is provided to be claimed
For Primary Served Area (Primary Cell, PCell), i.e. first service area, and can be configured according to UE capability configuration
One or more secondary service area (Seondary Cell, SCell), i.e. second service area.Further, Primary Served Area
Corresponding carrier wave is exactly first carrier, including the descending primary component carrier transmitting for control station to customer equipment data
(Downlink Primary Component Carrier, DL PCC) and for user equipment to control station number communicate up
Primary component carrier (Uplink Primary Component Carrier, UL PCC).Similar, secondary service area is corresponding
Carrier wave is exactly the second carrier wave, including the descending secondary component carrier transmitting for control station to customer equipment data
(Downlink Secondary Component Carrier, DL SCC) and communicate to control station number for user equipment
Places wants component carrier (Uplink Secondary Component Carrier, UL SCC).
With the development of communication technology, the P being caused due to user equipment power managementCMAXChange is also required in view of PHR
Calculating in.Specifically, the requirement source of this power adjustment can be region absorbance require (regional SAR,
Specific Absorption Rate) .SAR requirement scene include user equipment near human body when power needs under
The transmitter power working before when tune or dual transmitter work needs adjustment etc..
Because user equipment power management causes PCMAXChange, accordingly it is possible to cause PH to change, this new situation
Under, how eNodeB and user equipment carry out the assessment of power headroom, and how user equipment carries out PHR reports, and is all to need solution badly
Problem certainly.
For the problems of above-mentioned, technology is had to think at present it should be separately provided a trigger condition, PHR forbids
Intervalometer (prohibitPHR-Timer) time-out, and the change that user equipment power management value reports with respect to last PHR
It is accomplished by when amount is more than dl-PathlossChange triggering PHR.
The problem of do so is：Due to PCMAXNow affected by multiple factors (user equipment power management be limited to P-
The power variation of MPR, path loss PL), it is that power variation adds that PL changes from substantially understand that eNodeB should be concerned about, because
Entire change for power variation and PL just really determines the power headroom of E.If by power variation change and PL change
As independent trigger condition.When variation tendency is contrary, when such as PL becomes big, power variation diminishes, or causes overall on the contrary
But power headroom need not adjust and report again, result in the waste of PHR.If variation tendency is identical, such as PL diminishes, and power becomes
Change amount diminishes, but general effect or power headroom need to reduce, and now according to independent triggers condition, do not have the upper of PHR
Report, eNodeB can do the optimistic estimate making mistake, and the rising space of the user terminal that eNodeB thinks will be bigger than actual, subsequently
It is likely to result in the wasting of resources in scheduling.
If additionally, for the power variation change in SAR scene excessively frequently, be likely to result on the PHR of correlation
Report is too many, and the adjustment due to PHR requires time for, and too frequently PHR not only can not reach the purpose of rapid power adjustment, Er Qiehui
Waste the resource of the expense for power adjustment.
Content of the invention
Present invention is primarily targeted at providing a kind of power headroom reporting (PHR) triggering method and device, above-mentioned at least to solve
The inaccurate problem of power headroom reporting (PHR) of the prior art.
According to an aspect of the invention, it is provided a kind of power headroom reporting (PHR) method, including：Fixed in power headroom reporting (PHR)
When device time-out after, user equipment according to user equipment power management impact and path loss impact triggering user equipment power headroom report
Accuse；Wherein, user equipment power management affects the power variation causing for user equipment power management；Path loss affects for path loss
Variable quantity or path loss variable quantity and road loss compensation factor long-pending.
Further, the power headroom reporting (PHR) according to the impact of user equipment power management and path loss impact triggering user equipment
Before, also include：The impact of user equipment power management is filtered processing.
Further, the impact of user equipment power management is filtered processing and includes：To user equipment power management shadow
Sound carries out layer three Filtering Processing.
Further, the impact of user equipment power management is filtered processing and includes：Obtain user equipment power management
Impact is beyond the duration of threshold value；Determine that duration exceedes pre-determined threshold.
Further, according to user equipment power management impact and path loss impact triggering user equipment power headroom reporting (PHR) it
Afterwards, also include：Restart power headroom reporting (PHR) intervalometer.
Further, the time-out time of power headroom reporting (PHR) intervalometer forbids intervalometer less than power headroom reporting (PHR)
The time-out time of prohibitPHR-Timer.
Further, power headroom reporting (PHR) intervalometer forbids intervalometer prohibitPHR-Timer for power headroom reporting (PHR).
Further, according to the impact of user equipment power management and path loss impact triggering user equipment power headroom reporting (PHR),
Including：Judge whether the impact of user equipment power management and path loss impact sum are more than the first threshold value；If it is, triggering is used
The power headroom reporting (PHR) of family equipment.
Further, the first predetermined threshold is that descending path loss changes threshold value.
Further, according to the impact of user equipment power management and path loss impact triggering user equipment power headroom reporting (PHR),
Including：Judge whether the impact of user equipment power management is more than the second predetermined threshold；If it is, the work(of triggering user equipment
Rate headroom reporting；Wherein, the second predetermined threshold is the difference that descending path loss changes threshold value and path loss impact.
According to a further aspect in the invention, there is provided a kind of power headroom reporting (PHR) device, including：Receiver module, is used for connecing
Receive the power control command from base station side；Power headroom reporting (PHR) intervalometer；Trigger module, in power headroom reporting (PHR) timing
After device time-out, according to the impact of user equipment power management and path loss impact triggering user equipment to report power headroom reporting (PHR).
Further, triggering device also includes：Filtration module, for being filtered locating on the impact of user equipment power management
Reason.
Further, power headroom reporting (PHR) intervalometer forbids intervalometer prohibitPHR-Timer for power headroom reporting (PHR).
Further, trigger module includes：First judging submodule, for judging the impact of user equipment power management and road
Damage whether impact sum is more than the first threshold value；First triggering submodule, in the impact of user equipment power management and path loss
In the case that impact sum is more than the first threshold value, the power headroom reporting (PHR) of triggering user equipment.
Further, trigger module includes：Whether second judging submodule, for judging the impact of user equipment power management
More than the second predetermined threshold；Second triggering submodule, for being more than the second predetermined threshold in the impact of user equipment power management
In the case of value, the power headroom reporting (PHR) of triggering user equipment；Wherein, the second predetermined threshold is that descending path loss changes threshold value
Difference with path loss impact.
In the present invention, by considering user equipment power management shadow when triggering user equipment power headroom reporting (PHR)
Ring and path loss impact, solve the inaccurate problem of power headroom reporting (PHR) in prior art so that base station side can be according to reporting
Power headroom make the adjustment of correct power, and then reached and saved the effect that power adjusts expense.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description is used for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is according to embodiments of the present invention one power headroom reporting (PHR) triggering method flow chart；
Fig. 2 is according to embodiments of the present invention two power headroom reporting (PHR) triggering method flow chart；
Fig. 3 is according to embodiments of the present invention four power headroom reporting (PHR) triggering method flow chart；
Fig. 4 is according to embodiments of the present invention five power headroom reporting (PHR) triggering device structured flowchart；
Fig. 5 is according to embodiments of the present invention six power headroom reporting (PHR) triggering device structured flowchart；
Fig. 6 is according to embodiments of the present invention seven power headroom reporting (PHR) triggering device structured flowchart.
Specific embodiment
To describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that not conflicting
In the case of, the embodiment in the application and the feature in embodiment can be mutually combined.
Embodiment one
Fig. 1 is according to embodiments of the present invention one power headroom reporting (PHR) triggering method flow chart, as shown in figure 1, include with
Lower step：
Step S102, judges whether power headroom reporting (PHR) timer expiry is overtime；
Step S104, after power headroom reporting (PHR) timer expiry, user equipment affects according to user equipment power management
Affect triggering user equipment to report power headroom reporting (PHR) with path loss；Wherein, user equipment power management affects for user equipment work(
The power change values that rate management causes；Path loss affects variable quantity and the road loss compensation factor of variable quantity for path loss PL or path loss PL
Long-pending.
In embodiment one, by considering user equipment power management when triggering user equipment power headroom reporting (PHR)
Impact and path loss impact, solve the inaccurate problem of power headroom reporting (PHR) in prior art so that base station side can be according to upper
The power headroom of report makes correct power adjustment, and then has reached the effect saving power adjustment expense.
Wherein, the power headroom reporting (PHR) intervalometer in step S104 can be intervalometer of the prior art, and such as PHR prohibits
Only intervalometer (prohibitPHR-Timer) or the intervalometer different with prior art, intervalometer arrange overtime when
Between be less than or equal to prohibitPHR-Timer time-out time.
Wherein, in step S104, can filter out frequently on the user equipment power management impact of moment plus filtering
The user equipment power impact of change.
Wherein, the predetermined threshold in step S104 can be predetermined threshold of the prior art, for example descending path loss
Change threshold value (such as dl-PathlossChange) (unit dB) or the threshold value different with prior art.
Wherein, after the completion of triggering user equipment power headroom reporting (PHR), restart power headroom reporting (PHR) intervalometer.
Embodiment two
Fig. 2 is according to embodiments of the present invention two power headroom reporting (PHR) triggering method flow chart, as shown in Fig. 2 include with
Lower step：
Step S202, starts power headroom reporting (PHR) intervalometer.
Step S204, judges whether power headroom intervalometer is overtime.
Step S206, if the timer expiry of power headroom reporting (PHR), determines whether that user equipment power management affects
Whether it is more than predetermined threshold with path loss impact sum.
Step S208, if it is, triggering user equipment power headroom reporting (PHR) and restarting power headroom reporting (PHR) calmly
When device.
Wherein, user equipment power management impact can be the power variation that user equipment power management causes, for example
It is limited to the back-off amount of P-MPR.
The impact of user equipment power management and path loss affect what power variation sum caused for user equipment power management
Power variation (being for example limited to the back-off amount of P-MPR) adds that path loss PL variable quantity of the prior art or path loss PL become
Change amount is multiplied by road loss compensation factor α.The impact of user equipment power management occurs on the service area that activates at least one.User sets
Standby power management impact and path loss affect method that variable quantity defines should be consistent, is all defined as variable quantity=with this number
Value deducts the numerical value of last time, and the impact of user equipment power management and path loss affect the ratio of power variation sum and predetermined threshold
Relatively should go to compare with the absolute value of variable quantity sum, equivalent, this variable quantity sum is also equal to this user equipment power
Management impact and path loss impact sum deduct the management impact of last user plant capacity affects sum with path loss.Last time refers to
The secondary moment obtaining ascending resource transmission PHR.
Wherein, the intervalometer of power headroom reporting (PHR) can be that PHR of the prior art forbids intervalometer (prohibitPHR-
Timer).In another embodiment, intervalometer is intervalometer unlike the prior art, and the time-out time of intervalometer is less than simultaneously
The PHR of phase forbids intervalometer.
Wherein, predetermined threshold can be that descending path loss of the prior art changes threshold value (such as dl-
PathlossChange).In another embodiment, the values different from predetermined threshold of the prior art are set as needed.
Embodiment three
Embodiment three is essentially identical with the step of embodiment two, difference be triggering power headroom reporting before increased right
In the filtering of power variation, to filter out the user equipment power impact of frequent change.
After the timer expiry of power headroom reporting (PHR), and the impact of user equipment power management affects changed power with path loss
When amount sum is more than predetermined threshold, triggers user equipment power headroom reporting (PHR) and restart the timing of power headroom reporting (PHR)
Device.
Wherein, user equipment power management impact can be the power change values that user equipment power management causes, for example
Power variation.The impact of user equipment power management is added for power variation variable quantity with path loss impact power variation sum
Path loss PL variable quantity of the prior art or path loss PL variable quantity are multiplied by road loss compensation factor α.Described user equipment power management
Impact and path loss affect method that variable quantity defines should be consistent, is all defined as variable quantity=deduct last time with this numerical value
Numerical value, the comparison that the impact of user equipment power management and path loss affect power variation sum and predetermined threshold should be with becoming
The absolute value of change amount sum goes to compare.
Wherein, the intervalometer of power headroom reporting (PHR) can be that PHR of the prior art forbids intervalometer (prohibitPHR-
Timer).In another embodiment of the invention, intervalometer is intervalometer unlike the prior art, the time-out time of intervalometer
Forbid intervalometer less than PHR of the same period.
Wherein, the method for filtering can be using existing technology, such as L3 filtering mode, by some cycles sampling instances
User equipment power management value power variation, such as 20ms.Computing formula is：P-MPR_L=a*P-MPR_L_old+ (1-
A) * P-MPR_new, wherein a<1, P-MPR_new is the user equipment power management value of new sampling instances, and P-MPR_L is filtering
User equipment power management value afterwards, P-MPR_L_old is user equipment power management value before this sampling.Or with triggering
The moment method of (time to trigger, TTT) is filtered, that is, on original trigger mechanism again plus one specify when
Section TTT, when power variation change exceedes predetermined threshold, TTT starts to start.If described condition continue for a TTT cycle,
User equipment carries out PHR.When particularly predetermined threshold being increased beyond for power variation, above-mentioned filtering can not be used.
Wherein, predetermined threshold can be that descending path loss of the prior art changes threshold value (such as dl-
PathlossChange).In another embodiment of the invention, the values different from predetermined threshold of the prior art are set.
Example IV
Fig. 3 is according to embodiments of the present invention four power headroom reporting (PHR) triggering method flow chart, as shown in figure 3, include with
Lower step：
Step S402, starts power headroom reporting (PHR) intervalometer.
Step S404, judges whether power headroom intervalometer is overtime.
Step S406, if the timer expiry of power headroom reporting (PHR), determines whether that user equipment power management affects
Whether it is more than predetermined threshold.
Step S408, if it is, triggering user equipment power headroom reporting (PHR) and restarting power headroom reporting (PHR) calmly
When device.
Wherein, user equipment power management impact can be the power change values that user equipment power management causes, for example
Power variation.
Wherein, in the present embodiment, predetermined threshold is variable, when predetermined threshold can be according to not changing in the same time
When, can be related with threshold value of the prior art, for example, described predetermined threshold=threshold value of the prior art is (for example
Dl-PathlossChange) deduct path loss of the prior art (PL) power variation or path loss PL variable quantity is multiplied by path loss benefit
Repay factor-alpha.Now variable quantity define=deducts the numerical value of last time with this numerical value.Wherein, using user equipment power management
The absolute value of the power change values causing is compared with predetermined threshold.In another embodiment of the invention, predetermined threshold is not
Become, predetermined threshold can be the threshold values different with prior art or and prior art identical threshold value (for example
dl-PathlossChange).
Wherein, in example IV, can filter out frequently on the user equipment power management impact of moment plus filtering
The user equipment power impact of change.The method of filtering can be using existing technology, such as L3 filtering mode, by certain week
The user equipment power management value of phase sampling instances, such as every 20ms.Computing formula is：P-MPR_L=a*P-MPR_L_old+ (1-
A) * P-MPR_new, wherein a<1, P-MPR_new is the user equipment power management value of new sampling instances, and P-MPR_L is filtering
User equipment power management value afterwards, P-MPR_L_old is user equipment power management value before this sampling.Or with triggering
The moment method of (time to trigger, TTT) is filtered, that is, on original trigger mechanism again plus one specify when
Section TTT, when power variation change exceedes predetermined threshold, TTT starts to start.If described condition continue for a TTT cycle,
User equipment carries out PHR.When particularly predetermined threshold being increased beyond for power variation, above-mentioned filtering can not be used.?
In another embodiment of the present invention, power variation need not be filtered.
Wherein, in the present embodiment, the intervalometer of power headroom reporting (PHR) uses intervalometer of the prior art, for example
PHR forbids intervalometer.In another embodiment of the invention, intervalometer is intervalometer unlike the prior art, intervalometer
Time-out time forbids intervalometer less than PHR of the same period.
Embodiment five
Fig. 4 is according to embodiments of the present invention five power headroom reporting (PHR) triggering device structured flowchart.As shown in figure 4, this dress
Put including：Receiver module 10, power headroom reporting (PHR) timer 20 and trigger module 30.
Wherein, receiver module 10, for receiving the power control command from base station side；Power headroom reporting (PHR) intervalometer
20；Trigger module 30, for after power headroom reporting (PHR) timer expiry, according to the impact of user equipment power management and path loss shadow
Ring triggering user equipment to report power headroom reporting (PHR).
In embodiment five, by considering user equipment power management when triggering user equipment power headroom reporting (PHR)
Impact and path loss impact, solve the inaccurate problem of power headroom reporting (PHR) in prior art so that base station side can be according to upper
The power headroom of report makes correct power adjustment, and then has reached the effect saving power adjustment expense.
Wherein, said apparatus also include：Filtration module 40, for being filtered locating on the impact of user equipment power management
Reason.Power headroom reporting (PHR) timer 20 forbids intervalometer prohibitPHR-Timer for power headroom reporting (PHR).
Embodiment six
Fig. 5 is according to embodiments of the present invention six power headroom reporting (PHR) triggering device structured flowchart.As shown in figure 5, this dress
Put in addition to including each functional module in embodiment five, trigger module 30 includes：First judging submodule 301 and the first triggering
Module 302.
Wherein, the first judging submodule 301, for judging whether the impact of user equipment power management and path loss affect sum
More than the first threshold value.First triggering submodule 302, for being more than in the impact of user equipment power management and path loss impact sum
In the case of first threshold value, the power headroom reporting (PHR) of triggering user equipment..
Embodiment seven
Fig. 6 is according to embodiments of the present invention seven power headroom reporting (PHR) triggering device structured flowchart.As shown in fig. 6, this dress
Put in addition to including each functional module in embodiment five, trigger module 30 includes：The judges calculating sub module 303 and the second triggering
Submodule 304.
Wherein, the second judging submodule 303, for judging whether the impact of user equipment power management is more than the second predetermined door
Limit value.Second triggering submodule 304, in the case of in the impact of user equipment power management more than the second predetermined threshold,
The power headroom reporting (PHR) of triggering user equipment；Wherein, the second predetermined threshold is that descending path loss change threshold value is affected with path loss
Difference.
In the above embodiment of the present invention, in order to meet the power control requirements that user equipment power management brings, lead to
Cross and consider the impact of user equipment power management and path loss impact when triggering user equipment power headroom reporting (PHR), solve existing
There is the inaccurate problem of power headroom reporting (PHR) in technology so that base station side can make correct work(according to the power headroom reporting
Rate adjusts, and then has reached the effect saving power adjustment expense.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general
Computing device realizing, they can concentrate on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to they are stored
To be executed by computing device in the storage device, and in some cases, can be with different from shown in order execution herein
The step going out or describing, or they are fabricated to respectively each integrated circuit modules, or by the multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (15)
1. a kind of power headroom reporting (PHR) triggering method is it is characterised in that include：
After power headroom reporting (PHR) timer expiry, user equipment is according to the impact of user equipment power management and path loss impact triggering
The power headroom reporting (PHR) of described user equipment；
Wherein, described user equipment power management affects the power variation causing for described user equipment power management；Described
It is the variable quantity of path loss that path loss affects or the variable quantity of path loss is with road loss compensation factor long-pending.
2. method according to claim 1 is it is characterised in that touch according to the impact of user equipment power management and path loss impact
Before the power headroom reporting (PHR) sending out user equipment described, also include：
The impact of described user equipment power management is filtered processing.
3. method according to claim 2 is it is characterised in that be filtered locating on the impact of described user equipment power management
Reason includes：Layer three Filtering Processing is carried out on the impact of described user equipment power management.
4. method according to claim 2 is it is characterised in that be filtered processing bag on the impact of user equipment power management
Include：
Obtain the duration beyond threshold value for the described user equipment power management impact；
Determine that described duration exceedes pre-determined threshold.
5. method according to claim 1 is it is characterised in that touch according to the impact of user equipment power management and path loss impact
After the plant capacity headroom reporting of hair family, also include：
Restart described power headroom reporting (PHR) intervalometer.
6. method according to claim 1 is it is characterised in that the time-out time of described power headroom reporting (PHR) intervalometer is less than
Power headroom reporting (PHR) forbids the time-out time of intervalometer prohibitPHR-Timer.
7. method according to claim 1 is it is characterised in that described power headroom reporting (PHR) intervalometer is power headroom reporting (PHR)
Forbid intervalometer prohibitPHR-Timer.
8. the method according to any one of claim 1 to 7 it is characterised in that according to user equipment power management impact and
Path loss impact triggering user equipment power headroom reporting (PHR), including：
Judge whether described user equipment power management impact and described path loss impact sum are more than the first predetermined threshold；
If it is, triggering the power headroom reporting (PHR) of described user equipment.
9. method according to claim 8 changes thresholding it is characterised in that described first predetermined threshold is descending path loss
Value.
10. the method according to any one of claim 1 to 7 it is characterised in that according to user equipment power management impact and
Path loss impact triggering user equipment power headroom reporting (PHR), including：
Judge whether described user equipment power management impact is more than the second predetermined threshold；
If it is, triggering the power headroom reporting (PHR) of described user equipment；Wherein, described second predetermined threshold is descending path loss
The difference that change threshold value is affected with path loss.
A kind of 11. power headroom reporting (PHR) triggering devices are it is characterised in that include：
Receiver module, for receiving the power control command from base station side；
Power headroom reporting (PHR) intervalometer；
Trigger module, for after described power headroom reporting (PHR) timer expiry, according to the impact of user equipment power management and road
Damage impact triggering user equipment to report power headroom reporting (PHR).
12. devices according to claim 11 are it is characterised in that also include：
Filtration module, for being filtered processing on the impact of user equipment power management.
13. devices according to claim 11 are it is characterised in that described power headroom reporting (PHR) intervalometer is power headroom report
Announcement forbids intervalometer prohibitPHR-Timer.
14. devices according to any one of claim 11 to 13 are it is characterised in that described trigger module includes：
First judging submodule, for judging whether described user equipment power management impact and described path loss impact sum are more than
First predetermined threshold；
First triggering submodule, is more than the first predetermined door in the impact of described user equipment power management and described path loss impact sum
In the case of limit value, trigger the power headroom reporting (PHR) of described user equipment.
15. devices according to any one of claim 11 to 13 are it is characterised in that described trigger module includes：
Second judging submodule, for judging whether described user equipment power management impact is more than the second predetermined threshold；
Second triggering submodule, in the case of in the impact of described user equipment power management more than the second predetermined threshold,
Trigger the power headroom reporting (PHR) of described user equipment；Wherein, described second predetermined threshold be descending path loss change threshold value with
The difference of path loss impact.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110081992.1A CN102740346B (en) | 2011-04-01 | 2011-04-01 | Method and device for triggering power headroom report |
| PCT/CN2012/072280 WO2012130040A1 (en) | 2011-04-01 | 2012-03-13 | Method and device for trigging power headroom report |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110081992.1A CN102740346B (en) | 2011-04-01 | 2011-04-01 | Method and device for triggering power headroom report |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102740346A CN102740346A (en) | 2012-10-17 |
| CN102740346B true CN102740346B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110081992.1A Expired - Fee Related CN102740346B (en) | 2011-04-01 | 2011-04-01 | Method and device for triggering power headroom report |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102740346B (en) |
| WO (1) | WO2012130040A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761900B (en) * | 2011-04-28 | 2016-08-24 | 中兴通讯股份有限公司 | Power headroom reporting (PHR) triggering method and device |
| CN104105192A (en) * | 2013-04-03 | 2014-10-15 | 上海贝尔股份有限公司 | Power headroom report and device supporting multi-link connection |
| CN104919844B (en) * | 2013-11-27 | 2019-10-22 | 华为技术有限公司 | Power headroom reporting, method of reseptance and equipment |
| EP3745766B1 (en) | 2018-02-23 | 2022-08-03 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Power headroom report method and apparatus, and computer storage medium |
| WO2019213963A1 (en) | 2018-05-11 | 2019-11-14 | 北京小米移动软件有限公司 | Method and apparatus for transmitting information, and base station and user equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101729108B (en) * | 2008-11-03 | 2013-08-14 | 电信科学技术研究院 | Method and device for reporting power margin information |
| CN101925105B (en) * | 2009-06-15 | 2013-04-03 | 电信科学技术研究院 | Method and device for reporting uplink power margin information |
| US20100329204A1 (en) * | 2009-06-29 | 2010-12-30 | Yu-Hsuan Guo | Method and Apparatus for Handling Scheduling Information Report in Wireless Communication System |
-
2011
- 2011-04-01 CN CN201110081992.1A patent/CN102740346B/en not_active Expired - Fee Related
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2012
- 2012-03-13 WO PCT/CN2012/072280 patent/WO2012130040A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN102740346A (en) | 2012-10-17 |
| WO2012130040A1 (en) | 2012-10-04 |
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