CN102740346A - Method and device for triggering power headroom report - Google Patents
Method and device for triggering power headroom report Download PDFInfo
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- CN102740346A CN102740346A CN2011100819921A CN201110081992A CN102740346A CN 102740346 A CN102740346 A CN 102740346A CN 2011100819921 A CN2011100819921 A CN 2011100819921A CN 201110081992 A CN201110081992 A CN 201110081992A CN 102740346 A CN102740346 A CN 102740346A
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- H—ELECTRICITY
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- 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, wireless communication system uses electromagnetic wave and wireless telecommunications user equipment fixing or that move (for example, radio telephone or all can be called as subscriber equipment with notebook, the apparatus such as computer of wireless communication card) to communicate.In general, when carrying out radio communication, subscriber equipment (User Equipment is called for short UE) is positioned within the wireless coverage of system, and communicates through radio communication channel and system.Concrete, radio communication channel is divided into a plurality of carrier frequencies with wave frequency, and a carrier frequency or a plurality of carrier frequency can constitute a wireless service areas.Subscriber equipment can be got in touch through other equipment in one or more carrier wave homologous rays (for example controlling network element or other subscriber equipmenies).
The control network element of wireless communication system can be according to other equipment of communication protocol/technique control of system's agreement.The control network element comprises control station and network.Control station includes but not limited to base station (Base Station; Abbreviation BS), relay station (Relay Station; Be called for short RS) and subscriber equipment, when subscriber equipment was used as control station, this subscriber equipment can be the interim control station of in subscriber equipment, selecting according to pre-defined rule of conduct.Communication protocol/technique includes but not limited to GSM (Global System for Mobile Communications; Global system for mobile communications), CDMA (Code Division Multiple Access; Code division multiple access), EDGE (Enhanced Data Rate for GSM Evolution; The enhanced data rates for gsm evolution technology), CDMA2000, TD-SCDMA (Time Division-Synchronous Code Division Multiple Access; TD SDMA), HSPA (High Speed Packet Access; The high-speed packet access), WCDMA (Wideband Code Division Multiple Access, WCDMA), EVDO (EvolutionDataOnly, only evolution data), HSOPA (High Speed OFDM Packet Access; The access of high speed orthogonal frequency division multiplexed packet), 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 utilize the wireless channel of appointment in certain geographic range, wireless coverage to be provided through the base station, and this geographic range is called the sub-district.Usually, in theory, the base station should be positioned at the central authorities of sub-district.According to the size of base station range, the base station can be divided into grand (Macro) base station, little (Pico) base station and slight (Femto) base station.In the LTE/LTE-A system, the base station is also referred to as and strengthens B node (eNodeB), and femto base station is also referred to as Home eNodeB or family strengthens B node (Home eNodeB is called for short HeNodeB).
In addition, cover or the expansion capacity in order to expand, one or more relay stations can be placed between subscriber equipment and the base station.For subscriber equipment, relay station just is equivalent to a base station.Perhaps; In the extremely many networks of subscriber equipment quantity; Subscriber equipment also can be formed adhoc network (perhaps being called cluster) voluntarily, and as interim control station, assistance system is managed by certain subscriber equipment in the adhoc network; Interim control station can be accepted original control station control, management subordinate's subscriber equipment.
The main process of the uplink power control of LTE is:
(1) UE receives TPC (transmitting power control, power control command);
(2) UE (subscriber equipment) carries out the measurement of downlink wireless channel pilot reception power, calculating path loss Pathloss, and UE is with calculation of parameter transmitting power P such as Pathloss, Uplink Shared Channel bandwidth, transport block format and TPC; If subscriber equipment has triggered PHR (power headroom report, power headroom reporting (PHR)), and satisfied transmission condition, UE also need send PHR on Uplink Shared Channel so.
(3) after eNodeB (evolved base station) received Physical Uplink Shared Channel and/or PHR, the Physical Downlink Control Channel through DCI Format 0/3/3A sent TPC to UE; Return execution in step (1).
UE adopts dynamic resource distribution mode in the system; And adopt adaptive chnnel coding modulation system (adaptive modulation and coding; AMC), LTE UE uplink transmission power and resource allocation, code modulation mode are relevant, and therefore independent power control mode also is not enough to accomplish the power control task of LTE UE; The PHR that sends to eNodeB through UE provides foundation as the resource budget information of PUSCH for eNodeB carries out uplink resource allocation.If PHR reflects UE bigger power headroom is arranged, eNodeB can distribute more wireless resource block to give UE so; Do not had power headroom if PHR reflects UE, perhaps do not had more power headroom, eNodeB can only distribute less wireless resource block or low-order-modulated to order to UE so.
UE is lower than eNodeB to the TPC of UE transmission frequency to the PHR transmission frequency of eNodeB in the LTE system.The transmission of PHR needs two steps: at first be to trigger, report then.UE when cycle PHR timer expires or path loss changes greatly or during the PHR configuration/reconfiguration triggering PHR report, after UE had obtained enough to be used for the PUSCH resource of PHR, UE reported PHR to eNodeB.
PHR is calculated as PH (i)=P
CMAX-P
Ue, tx, P
CMAXBe UE configuration maximum transmission power (configured maximum output power); PCMAX L≤PCMAX≤PCMAX H; The span of PCMAX mainly contains 2 kinds of limited resource: 1) be subject to the control of eNodeB; Such as the little covering scene in little base station, eNodeB can control the maximum transmission power of UE, to reduce the interference of UE to the adjacent area; 2) the useless out-of-band radiation of UE (Out of band emission) is as in order to satisfy SEM (Spectrum emission mask, spectrum emission mask (SEM)) and ACLR (Adjacent Channel Leakage Ratio; The adjacent band reveal than) etc. requirement; UE can design responsible filter, is used for reducing out-of-band radiation, and perhaps UE reduces maximum transmission power; The former can increase the cost of UE, and the latter has reduced the uplink capacity of UE.Because the reduction transmitting power (be also referred to as back-off, power reduce, method PR) is simply effective, and a large amount of UE can adopt this method to reach the requirement of out-of-band radiation when realizing.But, do not allow the unconfined reduction power of UE, to such an extent as to can not carry out basic uplink service in order to guarantee the up transmitting capacity of UE; MPR (the Maximum Power Reduction that definition allows in the agreement; Maximum power rollback value), because the size of out-of-band radiation is followed the modulation configuration of sending data, and the bandwidth that takies all has relation; Like LTE in agreement 36.101; Be provided with different MPR by different transmission bandwidth with the modulation pattern, as shown in table 1 below: each UE can be provided with actual PR value by the realization of self, as long as satisfy PR≤MPR.
Table 1
So after considering back-off, UE deducts actual back-off value on the basis of specified transmitting power Ppowerclass, and after needing to consider the maximum transmission power of above-mentioned network permission, the minimum value of getting among both is actual PCMAX.P
Ue, txBe the up theoretical transmitting power of UE.In LTE, only consider the transmitting power of PUSCH among the PHR, so P
Ue, tx=P
Ue, pusch, P
Ue, puschIn LTE, be the transmitting power of PUSCH, be defined as P
Ue, pusch=10log
10(M
PUSCH(i))+P
O PUSCH(t)+α (t) PL+ Δ
TF(i)+and f (i), M wherein
PUSCH(i) be MCS (Modulation and Coding Scheme, modulating-coding form) configuration decision, the P of the transmission bandwidth of PUSCH by scheduling
O_PUSCH(t) be that part path loss offset, t are that semi-static variable, PL are path loss, Δ for open loop power control adjusted value, α (t)
TF(i) be that transformat offset, f (i) are the closed-loop power control adjusted value, promptly the transmitting power of PUSCH is with the bandwidth that takies resource of PUSCH, and the path loss between UE and base station and the configuration of open loop power control and closed-loop power control are relevant.So the PHR computing formula is PH (i)=P
CMAX-{ 10log
10(M
PUSCH(i))+P
O_PUSCH(t)+α (t) PL+ Δ
TF(i)+f (i) }.
PHR's is unit with dB, and power is unit with dBm in the formula.
In LTE, the triggering that PHR reports (trigger) mainly contains following three kinds of situation:
1) PHR forbids that timer (prohibitPHR-Timer) is overtime, and the variable quantity that reports with respect to last PHR of path loss is during greater than predetermined threshold dl-PathlossChange (unit is a decibel dB);
2) PHR cycle timer (periodicPHR-Timer) is overtime;
3) configuration of PHR functional entity or reshuffle;
After PHR was triggered, when UE had the uplink scheduling resource to hold PHR, UE sent to eNB with PHR.
Along with the development of communication system with technology, for improving systematic function, multi-carrier communications systems begins to occur.Multi-transceiver technology comprises multiple mode, one of them be exactly carrier aggregation (Carrier Aggregation, CA).For example, in the LTE-A system, so-called carrier aggregation is exactly that (Component Carrier CC) can condense together and is used to provide bigger bandwidth for transmission a plurality of component carriers.A user terminal can receive or send data simultaneously according to the ability of oneself on one or more component carriers.
In multicarrier system,, a first carrier and one or more second carrier wave can be arranged for some users.First carrier is generally main carrier wave, can carrier signaling and data, and second carrier wave is mainly used in the carrying data, also can the bearing part signaling.Carrier wave can be divided into up-link carrier (be used for subscriber equipment and count communication to control station) and descending carrier (being used for control station communicates by letter to user device quantity).The wireless service areas of corresponding first carrier is first service area, and the wireless service areas of corresponding second carrier wave is second service area.In different systems, first carrier, first service area and second carrier wave, the notion of second service area and title all can have corresponding details definition.For example in the LTE-A system, the subscriber equipment that has disposed multicarrier has only a RRM in net (Radio Resource Control RRC) connects.Radio Resource connect set up/rebulid/when switching generation; Provide the NAI mobile message and the service area (Serving Cell) of safety input to be called as Primary Served Area (Primary Cell; PCell), i.e. first service area, and configuration can be disposed one or more secondary service area (Seondary Cell according to UE capability; SCell), i.e. second service area.Further; The corresponding carrier wave in Primary Served Area is exactly a first carrier; Comprising being used for descending fundamental component carrier wave (the Downlink Primary Component Carrier of control station to the customer equipment data transmission; DL PCC) be used for the up fundamental component carrier wave (Uplink Primary Component Carrier, UL PCC) that subscriber equipment is communicated by letter to the control station number.Similarly; The carrier wave that secondary service area is corresponding is exactly second carrier wave; Comprising being used for descending less important component carrier (the Downlink Secondary Component Carrier of control station to the customer equipment data transmission; DLSCC) be used for the up less important component carrier (Uplink Secondary Component Carrier, UL SCC) that subscriber equipment is communicated by letter to the control station number.
Along with development of Communication Technique, because the P that the subscriber equipment power management causes
CMAXChange and also need consider in the calculating of PHR.Concrete; The requirement source of this power adjustment can be regional absorptivity require (regional SAR, Specific Absorption Rate) when .SAR requirement scene comprises subscriber equipment near human body power need reduce or during dual transmitter work before transmitter power of work need adjust etc.
Because the subscriber equipment power management causes P
CMAXChange, corresponding, might cause PH to change, under this new situation, how eNodeB and subscriber equipment carry out the assessment of power headroom, and how subscriber equipment carries out PHR reports, and all is the problem of needing solution badly.
For above-mentioned existing problem; There is technology to think at present; A trigger condition should be set separately; PHR forbids that timer (prohibitPHR-Timer) is overtime, and the variable quantity that reports with respect to last PHR of subscriber equipment power management value just needs to trigger PHR during greater than dl-PathlossChange.
The problem of doing like this is: because P
CMAXReceive a plurality of factor affecting (power variation that is subject to P-MPR of subscriber equipment power management this moment; Path loss PL); From what understand in fact that eNodeB should be concerned about is that power variation adds that PL changes, because the overall variation of power variation and PL just really determines the power headroom of E.If independently trigger condition is regarded in power variation variation and PL variation.When variation tendency was opposite, when becoming big like PL, power variation diminished, and perhaps caused the overall power surplus to need not adjustment on the contrary and still reported again, just caused the waste of PHR.If variation tendency is identical, diminish like PL, power variation diminishes; But general effect still is a power headroom need be reduced; Do not have the reporting of PHR according to the independent triggers condition this moment, and eNodeB can do the optimistic estimate that makes mistake; The rising space of the user terminal that eNodeB thinks will be than reality big, the follow-up wasting of resources that possibly cause in the scheduling.
In addition; If too frequent, may cause relevant PHR to report too much, because the adjustment of PHR needs the time for the variation of the power variation in the SAR scene; Too frequent PHR not only can not reach the purpose of rapid power adjustment, and can waste the resource of the expense that is used for the power adjustment.
Summary of the invention
Main purpose of the present invention is to provide a kind of power headroom reporting (PHR) triggering method and device, to solve the inaccurate problem of above-mentioned power headroom reporting (PHR) of the prior art at least.
According to an aspect of the present invention, a kind of power headroom reporting (PHR) method is provided, has comprised: behind the power headroom reporting (PHR) timer expiry, subscriber equipment triggers the power headroom reporting (PHR) of subscriber equipment according to influence of subscriber equipment power management and path loss influence; Wherein, the subscriber equipment power management influences the power variation that causes for the subscriber equipment power management; The path loss influence is long-pending for the variable quantity and the road loss compensation factor of the variable quantity of path loss or path loss.
Further, before the power headroom reporting (PHR) according to influence of subscriber equipment power management and path loss influence triggering subscriber equipment, also comprise: Filtering Processing is carried out in influence to the subscriber equipment power management.
Further, Filtering Processing being carried out in subscriber equipment power management influence comprises: layer three Filtering Processing are carried out in influence to the subscriber equipment power management.
Further, Filtering Processing being carried out in subscriber equipment power management influence comprises: obtain the lasting duration that the influence of subscriber equipment power management exceeds threshold value; Confirm to continue duration and surpass preset thresholding.
Further, after influence of subscriber equipment power management and path loss influence triggering subscriber equipment power headroom reporting (PHR), also comprise: restart the power headroom reporting (PHR) timer.
Further, the time-out time of power headroom reporting (PHR) timer is forbidden the time-out time of timer prohibitPHR-Timer less than power headroom reporting (PHR).
Further, the power headroom reporting (PHR) timer is that power headroom reporting (PHR) is forbidden timer prohibitPHR-Timer.
Further, trigger the subscriber equipment power headroom reporting (PHR) according to influence of subscriber equipment power management and path loss influence, comprising: whether judges plant capacity management influence and path loss influence sum greater than first threshold value; If then trigger the power headroom reporting (PHR) of subscriber equipment.
Further, first predetermined threshold is that descending path loss changes threshold value.
Further, trigger the subscriber equipment power headroom reporting (PHR) according to influence of subscriber equipment power management and path loss influence, comprising: whether judges plant capacity management influence is greater than second predetermined threshold; If then trigger the power headroom reporting (PHR) of subscriber equipment; Wherein, second threshold value is that descending path loss changes the poor of threshold value and path loss influence.
According to a further aspect in the invention, a kind of power headroom reporting (PHR) device is provided, has comprised: receiver module is used to receive the power control command from base station side; The power headroom reporting (PHR) timer; Trigger module is used for behind the power headroom reporting (PHR) timer expiry, triggers the user equipment to report power headroom reporting (PHR) according to influence of subscriber equipment power management and path loss influence.
Further, trigger equipment also comprises: filtration module is used for Filtering Processing is carried out in subscriber equipment power management influence.
Further, the power headroom reporting (PHR) timer is that power headroom reporting (PHR) is forbidden timer prohibitPHR-Timer.
Further, trigger module comprises: first judges submodule, and whether be used for judges plant capacity management influence and path loss influences sum greater than first threshold value; First triggers submodule, and being used for influences under the situation of sum greater than first threshold value in influence of subscriber equipment power management and path loss, triggers the power headroom reporting (PHR) of subscriber equipment.
Further, trigger module comprises: second judges submodule, whether is used for judges plant capacity management influence greater than second threshold value; Second triggers submodule, is used under the situation of subscriber equipment power management influence greater than second threshold value, triggering the power headroom reporting (PHR) of subscriber equipment; Wherein, second threshold value is that descending path loss changes the poor of threshold value and path loss influence.
In the present invention; Through when triggering the subscriber equipment power headroom reporting (PHR), taking all factors into consideration influence of subscriber equipment power management and path loss influence; Solved the inaccurate problem of power headroom reporting (PHR) in the prior art; Make base station side to make correct power adjustment, and then reached the effect of saving power adjustment expense according to the power headroom that reports.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the power headroom reporting (PHR) triggering method flow chart according to the embodiment of the invention one;
Fig. 2 is the power headroom reporting (PHR) triggering method flow chart according to the embodiment of the invention two;
Fig. 3 is the power headroom reporting (PHR) triggering method flow chart according to the embodiment of the invention four;
Fig. 4 is the power headroom reporting (PHR) trigger equipment structured flowchart according to the embodiment of the invention five;
Fig. 5 is the power headroom reporting (PHR) trigger equipment structured flowchart according to the embodiment of the invention six;
Fig. 6 is the power headroom reporting (PHR) trigger equipment structured flowchart according to the embodiment of the invention seven.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Embodiment one
Fig. 1 is the power headroom reporting (PHR) triggering method flow chart according to the embodiment of the invention one, and is as shown in Figure 1, may further comprise the steps:
Step S102 judges whether the power headroom reporting (PHR) timer expiry is overtime;
Step S104, behind the power headroom reporting (PHR) timer expiry, subscriber equipment triggers the user equipment to report power headroom reporting (PHR) according to influence of subscriber equipment power management and path loss influence; Wherein, the subscriber equipment power management influences the power change values that causes for the subscriber equipment power management; The path loss influence is long-pending for variable quantity and the road loss compensation factor of the variable quantity of path loss PL or path loss PL.
In embodiment one; Through when triggering the subscriber equipment power headroom reporting (PHR), taking all factors into consideration influence of subscriber equipment power management and path loss influence; Solved the inaccurate problem of power headroom reporting (PHR) in the prior art; Make base station side to make correct power adjustment, and then reached the effect of saving power adjustment expense according to the power headroom that reports.
Wherein, Power headroom reporting (PHR) timer among the step S104 can be a timer of the prior art; For example PHR forbids timer (prohibitPHR-Timer); Also can be the timer different with prior art, the time-out time that timer is provided be smaller or equal to the prohibitPHR-Timer time-out time.
Wherein, in step S104, can add filtering, filter out the subscriber equipment power influences of frequent variations the subscriber equipment power management influence of moment.
Wherein, the predetermined threshold among the step S104 can be a predetermined threshold of the prior art, and for example descending path loss changes threshold value (for example dl-PathlossChange) (dB of unit), also can be and prior art different threshold value.
Wherein, after triggering subscriber equipment power headroom reporting (PHR) is accomplished, restart the power headroom reporting (PHR) timer.
Embodiment two
Fig. 2 is the power headroom reporting (PHR) triggering method flow chart according to the embodiment of the invention two, and is as shown in Figure 2, may further comprise the steps:
Step S202, starting power surplus report timer.
Step S204 judges whether the power headroom timer is overtime.
Step S206, if the timer expiry of power headroom reporting (PHR), further whether judges plant capacity management influence influences sum greater than predetermined threshold with path loss.
Step S208 is if then trigger the subscriber equipment power headroom reporting (PHR) and restart the power headroom reporting (PHR) timer.
Wherein, the influence of subscriber equipment power management can be the power variation that the subscriber equipment power management causes, and for example is subject to the back-off amount of P-MPR.
The power variation (for example being subject to the back-off amount of P-MPR) that the power variation sum that influences influence of subscriber equipment power management and path loss causes for the subscriber equipment power management adds that path loss PL variable quantity of the prior art or path loss PL variable quantity multiply by road loss compensation factor α.The influence of subscriber equipment power management occurs on the service area of at least one activation.Subscriber equipment power management influence and path loss influence the method that variable quantity defines should be consistent; Promptly all be defined as the numerical value that this numerical value of variable quantity=usefulness deducts last time; The influence of subscriber equipment power management should be gone comparison with the absolute value of variable quantity sum with the comparison that path loss influences power variation sum and predetermined threshold; Equivalence, this variable quantity sum also equals the influence of this subscriber equipment power management influence with path loss that sum deducts last user plant capacity management influence and path loss influences sum.Referred to last time and obtained the moment that ascending resource sends PHR last time.
Wherein, the timer of power headroom reporting (PHR) can be that PHR of the prior art forbids timer (prohibitPHR-Timer).In another embodiment, timer is the timer different with prior art, and the time-out time of timer is forbidden timer less than PHR of the same period.
Wherein, predetermined threshold can be that descending path loss of the prior art changes threshold value (for example dl-PathlossChange).In another embodiment, set the value different as required with predetermined threshold of the prior art.
Embodiment three
Embodiment three is basic identical with the step of embodiment two, and difference is before triggering power headroom reporting, to have increased the filtering for power variation, to filter out the subscriber equipment power influences of frequent variations.
Behind the timer expiry of power headroom reporting (PHR), and subscriber equipment power management influence is when influence the power variation sum greater than predetermined threshold with path loss, triggering subscriber equipment power headroom reporting (PHR) and restart the timer of power headroom reporting (PHR).
Wherein, the influence of subscriber equipment power management can be the power change values that the subscriber equipment power management causes, for example power variation.Subscriber equipment power management influence and path loss influence the power variation sum, and path loss PL variable quantity of the prior art or path loss PL variable quantity multiply by road loss compensation factor α for the power variation variable quantity adds.The influence of said subscriber equipment power management and path loss influence the method that variable quantity defines should be consistent; Promptly all be defined as the numerical value that this numerical value of variable quantity=usefulness deducts last time, the influence of subscriber equipment power management should be gone comparison with the absolute value of variable quantity sum with the comparison that path loss influences power variation sum and predetermined threshold.
Wherein, the timer of power headroom reporting (PHR) can be that PHR of the prior art forbids timer (prohibitPHR-Timer).In another embodiment of the present invention, timer is the timer different with prior art, and the time-out time of timer is forbidden timer less than PHR of the same period.
Wherein, the method for filtering can be to adopt existing technology, and for example the L3 filtering mode is pressed the some cycles sampling subscriber equipment power management value power variation of moment, like 20ms.Computing formula is: P-MPR_L=a*P-MPR_L_old+ (1-a) * P-MPR_new; A＜1 wherein; P-MPR_new is the subscriber equipment power management value of the new moment of sampling; P-MPR_L is filtered subscriber equipment power management value, and P-MPR_L_old is the preceding subscriber equipment power management value of this sampling.Or with trigger constantly (time to trigger, method TTT) is carried out filtering, promptly on original trigger mechanism, adds the period TTT of an appointment again, power variation changes when surpassing predetermined threshold, TTT begins to start.If said condition has continued a TTT cycle, subscriber equipment carries out PHR.Special rise when surpassing predetermined threshold, can not use above-mentioned filtering for power variation.
Wherein, predetermined threshold can be that descending path loss of the prior art changes threshold value (for example dl-PathlossChange).In another embodiment of the present invention, set the value different with predetermined threshold of the prior art.
Embodiment four
Fig. 3 is the power headroom reporting (PHR) triggering method flow chart according to the embodiment of the invention four, and is as shown in Figure 3, may further comprise the steps:
Step S402, starting power surplus report timer.
Step S404 judges whether the power headroom timer is overtime.
Step S406, if the timer expiry of power headroom reporting (PHR), further whether judges plant capacity management influence is greater than predetermined threshold.
Step S408 is if then trigger the subscriber equipment power headroom reporting (PHR) and restart the power headroom reporting (PHR) timer.
Wherein, the influence of subscriber equipment power management can be the power change values that the subscriber equipment power management causes, for example power variation.
Wherein, In the present embodiment; Predetermined threshold is variable, when predetermined threshold can change according to difference constantly, and can be relevant with threshold value of the prior art; For example, said predetermined threshold=threshold value of the prior art (for example dl-PathlossChange) deducts path loss of the prior art (PL) power variation or path loss PL variable quantity multiply by road loss compensation factor α.This moment, this numerical value of variable quantity definition=usefulness deducted the numerical value of last time.Wherein, use the absolute value and predetermined threshold comparison of the power change values that the subscriber equipment power management causes.In another embodiment of the present invention, predetermined threshold is constant, and predetermined threshold can be and prior art different threshold value, also can be the threshold value (for example dl-PathlossChange) identical with prior art.
Wherein, in embodiment four, can add filtering, filter out the subscriber equipment power influences of frequent variations the subscriber equipment power management influence of moment.The method of filtering can be to adopt existing technology, and for example the L3 filtering mode is pressed the some cycles sampling subscriber equipment power management value of moment, like every 20ms.Computing formula is: P-MPR_L=a*P-MPR_L_old+ (1-a) * P-MPR_new; A＜1 wherein; P-MPR_new is the subscriber equipment power management value of the new moment of sampling; P-MPR_L is filtered subscriber equipment power management value, and P-MPR_L_old is the preceding subscriber equipment power management value of this sampling.Or with trigger constantly (time to trigger, method TTT) is carried out filtering, promptly on original trigger mechanism, adds the period TTT of an appointment again, power variation changes when surpassing predetermined threshold, TTT begins to start.If said condition has continued a TTT cycle, subscriber equipment carries out PHR.Special rise when surpassing predetermined threshold, can not use above-mentioned filtering for power variation.In another embodiment of the present invention, need not power variation is carried out filtering.
Wherein, in the present embodiment, what the timer of power headroom reporting (PHR) adopted is timer of the prior art, and for example PHR forbids timer.In another embodiment of the present invention, timer is the timer different with prior art, and the time-out time of timer is forbidden timer less than PHR of the same period.
Embodiment five
Fig. 4 is the power headroom reporting (PHR) trigger equipment structured flowchart according to the embodiment of the invention five.As shown in Figure 4, this device comprises: receiver module 10, power headroom reporting (PHR) timer 20 and trigger module 30.
Wherein, receiver module 10 is used to receive the power control command from base station side; Power headroom reporting (PHR) timer 20; Trigger module 30 is used for behind the power headroom reporting (PHR) timer expiry, triggers the user equipment to report power headroom reporting (PHR) according to influence of subscriber equipment power management and path loss influence.
In embodiment five; Through when triggering the subscriber equipment power headroom reporting (PHR), taking all factors into consideration influence of subscriber equipment power management and path loss influence; Solved the inaccurate problem of power headroom reporting (PHR) in the prior art; Make base station side to make correct power adjustment, and then reached the effect of saving power adjustment expense according to the power headroom that reports.
Wherein, said apparatus also comprises: filtration module 40 is used for Filtering Processing is carried out in subscriber equipment power management influence.Power headroom reporting (PHR) timer 20 is forbidden timer prohibitPHR-Timer for power headroom reporting (PHR).
Embodiment six
Fig. 5 is the power headroom reporting (PHR) trigger equipment structured flowchart according to the embodiment of the invention six.As shown in Figure 5, this device each functional module in comprising embodiment five, trigger module 30 comprises: first judges that submodule 301 and first triggers submodule 302.
Wherein, first judges submodule 301, and whether be used for judges plant capacity management influence and path loss influences sum greater than first threshold value.First triggers submodule 302, and being used for influences under the situation of sum greater than first threshold value in influence of subscriber equipment power management and path loss, triggers the power headroom reporting (PHR) of subscriber equipment.。
Embodiment seven
Fig. 6 is the power headroom reporting (PHR) trigger equipment structured flowchart according to the embodiment of the invention seven.As shown in Figure 6, this device each functional module in comprising embodiment five, trigger module 30 comprises: judgement calculating sub module 303 and second triggers submodule 304.
Wherein, second judges submodule 303, whether is used for judges plant capacity management influence greater than second threshold value.Second triggers submodule 304, is used under the situation of subscriber equipment power management influence greater than second threshold value, triggering the power headroom reporting (PHR) of subscriber equipment; Wherein, second threshold value is that descending path loss changes the poor of threshold value and path loss influence.
In the above embodiment of the present invention; In order to satisfy the power control requirement that the subscriber equipment power management brings; Through when triggering the subscriber equipment power headroom reporting (PHR), taking all factors into consideration influence of subscriber equipment power management and path loss influence; Solved the inaccurate problem of power headroom reporting (PHR) in the prior art, made base station side to make correct power adjustment, and then reached the effect of saving power adjustment expense according to the power headroom that reports.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a power headroom reporting (PHR) triggering method is characterized in that, comprising:
Behind the power headroom reporting (PHR) timer expiry, subscriber equipment triggers the power headroom reporting (PHR) of said subscriber equipment according to influence of subscriber equipment power management and path loss influence;
Wherein, said subscriber equipment power management influences the power variation that causes for said subscriber equipment power management; Said path loss influence is long-pending for the variable quantity and the road loss compensation factor of the variable quantity of path loss or path loss.
2. method according to claim 1 is characterized in that, before the power headroom reporting (PHR) according to influence of subscriber equipment power management and the said subscriber equipment of path loss influence triggering, also comprises:
Filtering Processing is carried out in said subscriber equipment power management influence.
3. method according to claim 2 is characterized in that, Filtering Processing is carried out in said subscriber equipment power management influence comprise: layer three Filtering Processing are carried out in said subscriber equipment power management influence.
4. method according to claim 2 is characterized in that, Filtering Processing is carried out in subscriber equipment power management influence comprise:
Obtain the lasting duration that said subscriber equipment power management influence exceeds threshold value;
Confirm that said lasting duration surpasses preset thresholding.
5. method according to claim 1 is characterized in that, after influence of subscriber equipment power management and path loss influence triggering subscriber equipment power headroom reporting (PHR), also comprises:
Restart said power headroom reporting (PHR) timer.
6. method according to claim 1 is characterized in that, the time-out time of said power headroom reporting (PHR) timer is forbidden the time-out time of timer prohibitPHR-Timer less than power headroom reporting (PHR).
7. method according to claim 1 is characterized in that, said power headroom reporting (PHR) timer is that power headroom reporting (PHR) is forbidden timer prohibitPHR-Timer.
8. according to each described method of claim 1 to 7, it is characterized in that, trigger the subscriber equipment power headroom reporting (PHR), comprising according to influence of subscriber equipment power management and path loss influence:
Judge that whether said subscriber equipment power management influence and said path loss influence sum greater than first predetermined threshold;
If then trigger the power headroom reporting (PHR) of said subscriber equipment.
9. method according to claim 8 is characterized in that, said first predetermined threshold is that descending path loss changes threshold value.
10. according to each described method of claim 1 to 7, it is characterized in that, trigger the subscriber equipment power headroom reporting (PHR), comprising according to influence of subscriber equipment power management and path loss influence:
Judge that whether said subscriber equipment power management influence is greater than second predetermined threshold;
If then trigger the power headroom reporting (PHR) of said subscriber equipment; Wherein, said second threshold value is that descending path loss changes the poor of threshold value and path loss influence.
11. a power headroom reporting (PHR) trigger equipment is characterized in that, comprising:
Receiver module is used to receive the power control command from base station side;
The power headroom reporting (PHR) timer;
Trigger module is used for behind said power headroom reporting (PHR) timer expiry, triggers the user equipment to report power headroom reporting (PHR) according to influence of subscriber equipment power management and path loss influence.
12. device according to claim 11 is characterized in that, also comprises:
Filtration module is used for Filtering Processing is carried out in subscriber equipment power management influence.
13. device according to claim 11 is characterized in that, said power headroom reporting (PHR) timer is that power headroom reporting (PHR) is forbidden timer prohibitPHR-Timer.
14., it is characterized in that said trigger module comprises according to each described device of claim 11 to 13:
First judges submodule, is used to judge that whether said subscriber equipment power management influence and said path loss influence sum greater than first predetermined threshold;
First triggers submodule, influences under the situation of sum greater than first predetermined threshold in said subscriber equipment power management influence and said path loss, triggers the power headroom reporting (PHR) of said subscriber equipment.
15., it is characterized in that said trigger module comprises according to each described device of claim 11 to 13:
Second judges submodule, is used to judge that whether said subscriber equipment power management influence is greater than second predetermined threshold;
Second triggers submodule, is used under the situation of said subscriber equipment power management influence greater than second predetermined threshold, triggering the power headroom reporting (PHR) of said subscriber equipment; Wherein, said second threshold value is that descending path loss changes the poor of threshold value and path loss influence.
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 true CN102740346A (en) | 2012-10-17 |
| CN102740346B 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 |
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| Country | Link |
|---|---|
| CN (1) | CN102740346B (en) |
| WO (1) | WO2012130040A1 (en) |
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| CN102761900A (en) * | 2011-04-28 | 2012-10-31 | 中兴通讯股份有限公司 | Power margin report 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 |
| WO2015077937A1 (en) * | 2013-11-27 | 2015-06-04 | 华为技术有限公司 | Power headroom reporting and receiving method and device |
| CN108702761A (en) * | 2018-05-11 | 2018-10-23 | 北京小米移动软件有限公司 | Transmit method and apparatus, base station and the user equipment of information |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102761900A (en) * | 2011-04-28 | 2012-10-31 | 中兴通讯股份有限公司 | Power margin report triggering method and device |
| 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 |
| US9736796B2 (en) | 2013-04-03 | 2017-08-15 | Alcatel Lucent | Method and apparatus for reporting power headroom in support of multiple link connections |
| WO2015077937A1 (en) * | 2013-11-27 | 2015-06-04 | 华为技术有限公司 | Power headroom reporting and receiving method and device |
| WO2019161542A1 (en) * | 2018-02-23 | 2019-08-29 | Oppo广东移动通信有限公司 | Power headroom report method and apparatus, and computer storage medium |
| US11039407B2 (en) | 2018-02-23 | 2021-06-15 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Power headroom report method and apparatus, and computer storage medium |
| US11785558B2 (en) | 2018-02-23 | 2023-10-10 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Power headroom report method and apparatus, and computer storage medium |
| CN108702761A (en) * | 2018-05-11 | 2018-10-23 | 北京小米移动软件有限公司 | Transmit method and apparatus, base station and the user equipment of information |
| CN108702761B (en) * | 2018-05-11 | 2021-12-07 | 北京小米移动软件有限公司 | Information transmission method and device, base station and user equipment |
| US11617180B2 (en) | 2018-05-11 | 2023-03-28 | Beijing Xiaomi Mobile Software Co., Ltd. | Methods and apparatuses for transmitting information, base stations and user equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012130040A1 (en) | 2012-10-04 |
| CN102740346B (en) | 2017-02-08 |
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