CN103718624B

CN103718624B - Power control method and equipment

Info

Publication number: CN103718624B
Application number: CN201380001615.XA
Authority: CN
Inventors: 汪喆; 李广俊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-06-27
Filing date: 2013-06-27
Publication date: 2017-04-12
Anticipated expiration: 2033-06-27
Also published as: WO2014205747A1; CN103718624A

Abstract

An embodiment of the invention provides a power control method and equipment, and relates to the field of communication for coordinating interference between user equipments and increasing district throughput. The method comprises the following steps: a base station receives a power margin report reported by user equipment, and the base station acquires a second emission power margin according to a first emission power margin and a preset parameter in the power margin report, and then the base station carries out a power control for user equipment according to a second emission power margin; or the base sends messages to user equipment by air interface, and the message includes preset messages, which are used for determining the second emission power margin of the user equipment, further, the base station receives the power margin report reported by the user equipment, and carries out a power control for the user equipment according to the second emission power margin in the power margin report. The embodiment of invention is used for power control of macro and micro networks.

Description

A kind of Poewr control method and equipment

Technical field

The present invention relates to the communications field, more particularly to a kind of method and apparatus of Power Control.

Background technology

With the development of mobile broadband, the extensive application of various intelligent terminal brings increasing rapidly for data service, even if It is LTE（Long Term Evolution, Long Term Evolution）Network cannot also fully meet following mobile data demand, particularly Hot spot region capacity, blind spot is covered, and in-door covering etc. will propose requirements at the higher level to existing macrocellular framework.And small cell（Microcellulor）Framework effectively improves network capacity and covering problem, and grand micro- same frequency isomery formula networking is to solve heat at present Point capacity, effective ways the problems such as blind spot is covered.

As macro and micro networks are built a station the becoming increasingly popular of mode, while capacity gain is brought, also generate one and do not allow Problem-the co-channel interference of ignorance.When co-channel interference is serious, the population size of cell is not only reduced, it is also possible to cause use The mutual lifting of family power, user equipment work(is bigger, disturbs bigger, and easily triggering user equipment falls net and the difficulty etc. that networks Series of network problem.

EICIC（Enhanced Inter Cell Interference Coordination, enhancement type district interference Coordinate）For the interference coordination in time domain, when grand micro- common networking, a part of subframe is ABS（AlmostBlank Subframe, almost blank subframe）Can be divided out.When there are ABS subframes, macro station does not set to the user that it is serviced It is standby to be scheduled, so that the user equipment that macro station is serviced reduces the interference of the user equipment to micro- station service from time domain.When When into non-ABS subframes, micro- station is not scheduled to the user equipment that it is serviced, so that the serviced user equipment in micro- station The interference of the user equipment to macro station service is reduced from time domain, but during using the program, the gain of cell flow is not obvious.

The content of the invention

Embodiments of the invention provide a kind of Poewr control method and equipment, and to solve interference between user equipment cell is caused The unconspicuous problem of gain of flow.

A kind of a first aspect of the present invention, there is provided Poewr control method, including：

The power headroom reporting (PHR) that base station receive user equipment is reported, the power headroom reporting (PHR) includes the user equipment First transmission power surplus；

First transmission power surplus of the base station in parameter preset and the power headroom reporting (PHR), obtains second Penetrate power headroom；

The base station carries out Power Control according to the second transmission power surplus to the user equipment.

With reference in a first aspect, in the first mode in the cards of first aspect, the base station is according to described second Transmission power surplus carries out Power Control to the user equipment to be included：

When the power spectral density of the user equipment is constant, the base station is obtained according to the second transmission power surplus It is taken as the Resource Block quantity of the dispatching user facility；

If the Resource Block quantity is less than the second parameter preset, the base station to the user equipment sends power control commands Word, the power control commands word is used to indicate that the user equipment reduces the actual emission power.

With reference to the first mode in the cards of first aspect, in second mode in the cards, methods described Also include：

The base station determines second parameter preset according to the number of users and transmission bandwidth of service.

With reference to second mode in the cards of first aspect to first aspect, in the third mode in the cards In, the difference of the balance of first transmission power surplus of second transmission power and the parameter preset.

With reference to the third mode in the cards of first aspect to first aspect, in the 4th kind of mode in the cards In, the maximum transmission power of the balance of user equipment of first transmission power and the difference of actual emission power.

With reference to the 4th kind of mode in the cards of first aspect to first aspect, in the 5th kind of mode in the cards In, the scope of the parameter preset is 0～23 decibel.

A second aspect of the present invention provides a kind of Poewr control method, including：

Base station sends message by air interface to user equipment, and the message includes parameter preset, the parameter preset For determining the second transmission power surplus of the user equipment；

The base station receives the power headroom reporting (PHR) of the user equipment to report, and the power headroom reporting (PHR) includes described the Two transmission power surpluses；

With reference to second aspect, in the first mode in the cards of second aspect, the base station is according to described second Transmission power surplus carries out Power Control to the user equipment to be included：

In with reference to the first mode in the cards of second aspect, in second mode in the cards, the side Method also includes：The base station determines second parameter preset according to the number of users and transmission bandwidth of service.

With reference to second mode in the cards of second aspect to second aspect, in the third mode in the cards In, the second transmission power surplus is equal to the first transmission power surplus, or, the second transmission power surplus is equal to described The difference of the first transmission power surplus and the parameter preset；

Wherein, when the balance of user equipment of first transmission power receives the message, the user equipment Transmission power surplus.

With reference to the third mode in the cards of second aspect, in the 4th kind of mode in the cards, described first The maximum transmission power of the balance of user equipment of transmission power and the difference of actual emission power.

With reference to the 4th kind of mode in the cards of second aspect to second aspect, in the 5th kind of mode in the cards In, the scope of the parameter preset is 0～23 decibel.

A third aspect of the present invention provides a kind of Poewr control method, including：

User equipment receives the message that base station is sent by air interface, and the message includes parameter preset；

The user equipment obtains second according to the first transmission power surplus of the parameter preset and the user equipment Transmission power surplus；

The user equipment to the base station reporting power margin reports that the power headroom reporting (PHR) includes described second Penetrate power headroom；

The user equipment receives power control commands word from the base station, and the power command word sets for controlling the user Standby transmission power.

With reference to the third aspect, in the first mode in the cards of the third aspect, methods described also includes：

The user equipment adjusts the actual emission power according to the power control commands word.

With reference to the first mode in the cards of the third aspect or the third aspect, in second mode in the cards In, the second transmission power surplus is equal to the first transmission power surplus, or, the second transmission power surplus is equal to The difference of the first transmission power surplus and the parameter preset；

With reference to second mode in the cards of the third aspect, in the third mode in the cards, described first The maximum transmission power of the balance of user equipment of transmission power and the difference of actual emission power.

With reference to the third mode in the cards of the third aspect to the third aspect, in the 4th kind of mode in the cards In, the scope of the parameter preset is 0～23 decibel.

A fourth aspect of the present invention provides a kind of base station, including：

Receiving unit, for the power headroom reporting (PHR) that receive user equipment is reported, the power headroom reporting (PHR) includes described First transmission power surplus of user equipment；

Processing unit, for the first transmission power surplus in parameter preset and the power headroom reporting (PHR), obtains Second transmission power surplus；And,

Control unit, for carrying out Power Control to the user equipment according to the second transmission power surplus.

With reference to fourth aspect, in the first mode in the cards of fourth aspect, described control unit includes first Subelement and the second subelement；

First subelement is used for：When the power spectral density of the user equipment is constant, according to the described second transmitting Whether power headroom, is retrieved as the Resource Block quantity of the dispatching user facility, and judge the Resource Block quantity less than second Parameter preset；

Second subelement is used for：When first subelement judges that the Resource Block quantity is pre- less than described second During setting parameter, power control commands word is sent to the user equipment, the power control commands word is used to indicate that the user equipment is reduced The actual emission power.

With reference to the first mode in the cards of fourth aspect, in second mode in the cards, the process Unit is additionally operable to：

Second parameter preset is determined according to the number of users and transmission bandwidth of service, and is supplied to the control single Unit.

With reference to second mode in the cards of fourth aspect to fourth aspect, in the third mode in the cards In, the difference of the balance of first transmission power surplus of second transmission power and the parameter preset.

With reference to the third mode in the cards of fourth aspect to fourth aspect, in the 4th kind of mode in the cards In, the maximum transmission power of the balance of user equipment of first transmission power and the difference of actual emission power.

With reference to the 4th kind of mode in the cards of fourth aspect to fourth aspect, in the 5th kind of mode in the cards In, the scope of the parameter preset is 0～23 decibel.

A fifth aspect of the present invention provides a kind of base station, including：

Transmitting element, for sending message to user equipment by air interface, the message includes parameter preset, described Parameter preset is used to determine the second transmission power surplus of the user equipment；

Receiving unit, for receiving the power headroom reporting (PHR) of the user equipment to report, the power headroom reporting (PHR) includes The second transmission power surplus；And,

With reference to the 5th aspect, in the first mode in the cards of the 5th aspect, described control unit includes the 3rd Subelement and the 4th subelement；

3rd subelement is used for：When the power spectral density of the user equipment is constant, according to the described second transmitting Whether power headroom, is retrieved as the Resource Block quantity of the dispatching user facility, and judge the Resource Block quantity less than second Parameter preset；

4th subelement is used for：When the 3rd subelement judges that the Resource Block quantity is pre- less than described second During setting parameter, power control commands word is sent to the user equipment, the power control commands word is used to indicate that the user equipment is reduced The actual emission power.

With reference to the first mode in the cards of the 5th aspect, in second mode in the cards, processing unit It is additionally operable to：Second parameter preset is determined according to the number of users and transmission bandwidth of service, and is supplied to described control unit.

With reference to second mode in the cards of the 5th aspect to the 5th aspect, in the third mode in the cards In, the second transmission power surplus is equal to the first transmission power surplus, or, the second transmission power surplus is equal to described The difference of the first transmission power surplus and the parameter preset；

With reference to the third mode in the cards of the 5th aspect, in the 4th kind of mode in the cards, described first The maximum transmission power of the balance of user equipment of transmission power and the difference of actual emission power.

With reference to the 4th kind of mode in the cards of the 5th aspect to the 5th aspect, in the 5th kind of mode in the cards In, the scope of the parameter preset is 0～23 decibel.

A sixth aspect of the present invention provides a kind of user equipment, including：

Receiving unit, for receiving the message that base station is sent by air interface, the message includes parameter preset；

Acquiring unit, for obtaining second according to the first transmission power surplus of the parameter preset and the user equipment Transmission power surplus；And,

Reporting unit, for base station reporting power margin report, the power headroom reporting (PHR) to include described second Transmission power surplus；

The receiving unit is additionally operable to receive power control commands word from the base station, and the power command word is described for controlling The transmission power of user equipment.

With reference to the 6th aspect, in the first mode in the cards of the 6th aspect, also include：

Processing unit, for adjusting the actual emission power according to the power control commands word.

With reference to the 6th aspect or the first mode in the cards of the 6th aspect, in second mode in the cards In, the second transmission power surplus is equal to the first transmission power surplus, or, the second transmission power surplus is equal to The difference of the first transmission power surplus and the parameter preset；

Wherein, when the balance of receiving unit of first transmission power receives the message, the user equipment Transmission power surplus.

With reference to second mode in the cards of the 6th aspect, in the third mode in the cards, described first The maximum transmission power of the balance of user equipment of transmission power and the difference of actual emission power.

With reference to the third mode in the cards of the 6th aspect to the 6th aspect, in the 4th kind of mode in the cards In, the scope of the parameter preset is 0～23 decibel.

A seventh aspect of the present invention provides a kind of base station, including：

Receptor, for the power headroom reporting (PHR) that receive user equipment is reported, the power headroom reporting (PHR) includes the use First transmission power surplus of family equipment；And,

Processor, for the first transmission power surplus in parameter preset and the power headroom reporting (PHR), obtains the Two transmission power surpluses, and Power Control is carried out to the user equipment according to the second transmission power surplus.

With reference to the 7th aspect, the 7th aspect the first mode in the cards in, the processor specifically for：

When the power spectral density of the user equipment is constant, according to the second transmission power surplus, it is retrieved as described The Resource Block quantity of dispatching user facility；

Whether the Resource Block quantity is judged less than the second parameter preset, if it is, indicating that emitter sets to the user Preparation send power control commands word, the power control commands word to be used to indicate that the user equipment reduces the actual emission power.

With reference to the first mode in the cards of the 7th aspect, in second mode in the cards, the process Device is additionally operable to：

Second parameter preset is determined according to the number of users and transmission bandwidth of service.

With reference to second mode in the cards of the 7th aspect to the 7th aspect, in the third mode in the cards In, the second transmission power surplus is equal to the first transmission power surplus, or, the second transmission power surplus is equal to described The difference of the first transmission power surplus and the parameter preset；

With reference to the third mode in the cards of the 7th aspect, in the 4th kind of mode in the cards, described first The maximum transmission power of the balance of user equipment of transmission power and the difference of actual emission power.

With reference to the 4th kind of mode in the cards of the 7th aspect to the 7th aspect, in the 5th kind of mode in the cards In, the scope of the parameter preset is 0～23 decibel.

A eighth aspect of the present invention provides a kind of base station, including：

Emitter, for sending message to user equipment by air interface, the message includes parameter preset, described pre- Setting parameter is used to determine the second transmission power surplus of the user equipment；

Receptor, for receiving the power headroom reporting (PHR) of the user equipment to report, the power headroom reporting (PHR) includes institute State the second transmission power surplus；And,

Processor, for carrying out Power Control to the user equipment according to the second transmission power surplus.

With reference to eighth aspect, in the first mode in the cards of eighth aspect, the processor specifically for：

Whether the Resource Block quantity is judged less than the second parameter preset, if it is, indicating the emitter to the use Family equipment sends power control commands word, and the power control commands word is used to indicate that the user equipment reduces the actual emission power.

With reference to the first mode in the cards of eighth aspect, in second mode in the cards, the process Device is additionally operable to：Second parameter preset is determined according to the number of users and transmission bandwidth of service.

With reference to second mode in the cards of eighth aspect to eighth aspect, in the third mode in the cards In, the second transmission power surplus is equal to the first transmission power surplus, or, the second transmission power surplus is equal to described The difference of the first transmission power surplus and the parameter preset；

With reference to the third mode in the cards of eighth aspect, in the 4th kind of mode in the cards, described first The maximum transmission power of the balance of user equipment of transmission power and the difference of actual emission power.

With reference to the 4th kind of mode in the cards of eighth aspect to eighth aspect, in the four or five kind of mode in the cards In, the scope of the parameter preset is 0～23 decibel.

A ninth aspect of the present invention provides a kind of user equipment, including：

Receptor, for receiving the message that base station is sent by air interface, the message includes parameter preset；

Processor, for obtaining second according to the first transmission power surplus of the parameter preset and the user equipment Penetrate power headroom；And,

Emitter, for base station reporting power margin report, the power headroom reporting (PHR) to include described second Penetrate power headroom；

The receptor is additionally operable to receive power control commands word from the base station, and the power command word is used to control the use The transmission power of family equipment.

With reference to the 9th aspect, in the first mode in the cards of the 9th aspect, the processor is additionally operable to：According to The power control commands word adjusts the actual emission power.

With reference to the first mode in the cards of the 9th aspect, in second mode in the cards, described second Transmission power surplus is equal to the first transmission power surplus, or, the second transmission power surplus is equal to described first Penetrate the difference of power headroom and the parameter preset；

With reference to second mode in the cards of the 9th aspect, in the third mode in the cards, described first The maximum transmission power of the balance of user equipment of transmission power and the difference of actual emission power.

With reference to the third mode in the cards of the 9th aspect to the 9th aspect, in the 4th kind of mode in the cards In, the scope of the parameter preset is 0～23 decibel.

The embodiment of the present invention provides a kind of Poewr control method and equipment, the power headroom that base station receive user equipment is reported Report, power headroom reporting (PHR) includes the first transmission power surplus of user equipment, and base station is according to parameter preset and power headroom report The first transmission power surplus in announcement, obtains the second transmission power surplus, then user is set according to the second transmission power surplus It is standby to carry out Power Control, or, base station sends message by air interface to user equipment, and message includes parameter preset, presets Parameter is used to determine the second transmission power surplus of user equipment, and then the power headroom report that base station receive user equipment is reported Accuse, power headroom reporting (PHR) includes the second transmission power surplus, and base station carries out work(according to the second transmission power surplus to user equipment Rate control, can coordinates user equipment room interference, lifted cell throughout.

Description of the drawings

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is a kind of Poewr control method schematic flow sheet provided in an embodiment of the present invention；

A kind of Poewr control method schematic flow sheet that Fig. 2 is provided for further embodiment of this invention；

A kind of cell throughout and the change schematic diagram of preset difference value that Fig. 3 is provided for further embodiment of this invention；

A kind of Poewr control method schematic flow sheet that Fig. 4 is provided for further embodiment of this invention；

A kind of architecture of base station schematic diagram that Fig. 5 is provided for further embodiment of this invention；

Another architecture of base station schematic diagram that Fig. 6 is provided for further embodiment of this invention；

A kind of architecture of base station schematic diagram that Fig. 7 is provided for further embodiment of this invention；

Another kind of architecture of base station schematic diagram that Fig. 8 is provided for further embodiment of this invention；

A kind of user device architecture schematic diagram that Fig. 9 is provided for further embodiment of this invention；

A kind of architecture of base station schematic diagram that Figure 10 is provided for further embodiment of this invention；

A kind of architecture of base station schematic diagram that Figure 11 is provided for further embodiment of this invention；

A kind of user device architecture schematic diagram that Figure 12 is provided for further embodiment of this invention.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

Under grand micro- station mixed networking, Micro eNB（Micro evolved NodeB, micro- station）UE in cell（User Equipment, user equipment）Easily to Macro eNB（Macro evolved NodeB, macro station）UE in cell causes to do Disturb, so, result in the SINR of the user equipment of macro station（Signal to Interference plus Noise Ratio, letter It is dried ratio）Reduce, speed declines, cell power control is not accomplished the interference for coordinating minizone well under heterogeneous network, reduced The population size of cell, can cause the mutual lifting of power of UE, and the UE in micro- station cell work(is bigger, in macro station cell UE interference is bigger, can trigger the UE in macro station cell and fall the network problem such as net and networking difficulty.

The embodiment of the present invention provides a kind of Poewr control method, as shown in figure 1, including：

101st, the power headroom reporting (PHR) that receive user equipment in base station is reported, power headroom reporting (PHR) includes the first of user equipment Transmission power surplus.

Wherein, base station here is the micro- stations of Micro eNB, and user equipment is the UE in micro- station cell.UE can pass through MCE （MAC-Control Element, MAC Control Element）Periodically report PHR to micro- station（Power Headroom Report, power Headroom reporting）.The first transmission power surplus of the PHR including UE, the maximum transmission power of the balance of UE of the first transmission power with The difference of actual emission power.Wherein, MAC（Media Access Control, media access control）To be responsible for control and being connected The physical medium of physical layer.

The initiation of PHR is in PUSCH（Physical Uplink Shared Channel, Physical Uplink Shared Channel）, When UE meets PUSCH sends condition, just PHR is sent to base station.Initiating the condition of PHR can be divided into 3 kinds, meet any of which One condition can trigger and report.One is prohibit timer（Forbid intervalometer）Overflow, and path loss is with the last time Path loss when sending PHR compares its variable quantity more than RRC（Radio Resource Control, wireless heterogeneous networks）Match somebody with somebody The pathchange for putting（Path changing）, two is periodic timer（Periodical timer）Overflow, three is that UE receives RRC weights With message, message package config containing phr configurations, UE needs comprising PHR when first time PUSCH is sent.Here condition Can be other trigger conditions, not limit here.Wherein, the PHR can account for 6 bit, can report to base station for 1s clock UE Once, or other time sets, and does not limit here.

102nd, first transmission power surplus of the base station in parameter preset and power headroom reporting (PHR), obtains second and launches work( Rate surplus.

Exemplary, the transmission power margin value in the PHR is deducted default ginseng by eNB after the PHR that UE is reported is received Number Po, obtains the second transmission power surplus.So, in eNB, the PHR that UE is reported is reduced, eNB just by UE it is current send out Penetrate power to be exaggerated falsely so that eNB is controlled the transmission power of UE, so that the transmission power of UE is reduced.

Wherein, the span of Po can be 0～23, for example, can be 0,13,16 etc..Need according to different scenes （Compact district, open area）Deng by the emulation of network planning network optimization, getting optimized parameter to obtain the postiive gain of cell throughout. Optionally, the unit of the Po in various embodiments of the present invention is decibel（dB）, repeat no more hereinafter.

103rd, base station carries out Power Control according to the second transmission power surplus to user equipment.

Exemplary, after eNB obtains the second transmission power surplus, under conditions of the power spectral density of UE is constant, ENB can obtain the RB that eNB is UE scheduling according to the PHR after renewal（Resource Block, Resource Block）Quantity, then, eNB The RB quantity of the UE is compared with second parameter preset of eNB, if Resource Block quantity is less than the second parameter preset, eNB Power control commands word f (i) are sent to UE, the power control commands word is used to indicate that UE reduces actual emission power.Wherein, eNB is according to clothes The number of users and transmission bandwidth of business determines the second parameter preset.

So, power control commands word is sent to UE by eNB, indicates that UE reduces actual transmission power, i.e., by the control of eNB System carries out power control regulation to UE, limits the actual emission power of the UE in micro- station cell so that the transmitting of the UE in micro- station cell Power reduces the interference to reduce the UE in micro- station cell to the UE in macro station cell, to lift the handling capacity of overall cell.

And when RB quantity is more than the second parameter preset, eNB to UE sends power control commands word, the power control commands word is used to lift Rise the transmission power of UE.

The embodiment of the present invention provides a kind of Poewr control method, the power headroom report reported by base station receive user equipment Accuse, power headroom reporting (PHR) includes the first transmission power surplus of user equipment, and then according to parameter preset and power headroom reporting (PHR) In the first transmission power surplus, obtain the second transmission power surplus, base station is according to the second transmission power surplus to user equipment Carry out Power Control, can coordinates user equipment room interference, lifted cell throughout.

The embodiment of the present invention provides a kind of Poewr control method, as shown in Fig. 2 including：

201st, base station sends message by air interface to user equipment, and message includes parameter preset, and parameter preset is used for Determine the second transmission power surplus of user equipment.

Wherein, base station here is the micro- stations of Micro eNB, and user equipment is the UE in micro- station cell.

Exemplary, can be modified or increase by the protocol fields to eNB so that eNB can be by connecing in the air Mouthful to UE send message, the message include parameter preset Po, for limiting the transmission power of UE so that UE receive this preset During parameter, the second transmission power surplus can be obtained according to the transmission power surplus in the PHR of the parameter preset and UE.

Wherein, the second transmission power surplus is equal to the first transmission power surplus, or, the second transmission power surplus is equal to the The difference of one transmission power surplus and parameter preset.When the balance of user equipment of first transmission power receives message, user equipment Transmission power surplus.

The maximum transmission power of the balance of UE of the first transmission power and the difference of actual emission power, i.e. maximum transmission power subtracts The difference of actual emission power is gone, when the difference that the second transmission power is the first transmission power surplus and parameter preset Po, i.e. UE Maximum transmission power deduct the difference of parameter preset Po.The span of Po values here can be 0～23, for example, can be 0,13,16 etc..Need according to different scenes（Compact district, open area）Deng by the emulation of network planning network optimization, getting optimum ginseng Count to obtain the postiive gain of cell throughout.If UE is less than Po, the PHR that the UE is reported to eNB when front to the PHR that eNB is reported Include the first transmission power surplus, i.e., the first transmission power surplus of UE is not updated, second transmission power surplus etc. In the first transmission power surplus.

202nd, the power headroom reporting (PHR) that receive user equipment in base station is reported, power headroom reporting (PHR) is included more than the second transmission power Amount.

Exemplary, when UE is after parameter Po of eNB transmissions is got, when PHR is obtained, UE is by the first transmission power for UE The difference for deducting parameter preset Po obtains the second transmission power surplus, obtains the PHR after updating, and the PHR includes the second of UE Transmission power surplus, and the PHR after renewal is reported into eNB.

If when the front PHR reported to eNB is less than Po, the UE is included more than the first transmission power UE to the PHR that eNB is reported Amount, i.e., be not updated to the transmission power surplus of UE.

Wherein, the initiation of PHR is on PUSCH, when UE meets PUSCH sends condition, just to send PHR to base station.Send out Rise PHR condition can be divided into 3 kinds, meet one condition of any of which i.e. can trigger report.One is that prohibit timer overflow Go out, and path loss compares its variable quantity more than RRC configurations with path loss during last transmission PHR Pathchange, two is that periodic timer overflow, and three is that UE receives RRC reallocation messages, message package config containing phr Configuration, UE needs comprising PHR when first time PUSCH is sent.Here condition can also be other trigger conditions, not do here Limit.Wherein, the PHR can account for 6 bit, can report once to base station for 1s clocks UE, or and other time sets, Here do not limit.

203rd, base station carries out Power Control according to the second transmission power surplus to user equipment.

Specifically, when the second transmission power surplus in the PHR after eNB is updated, in the power spectral density of UE Under conditions of constant, eNB can obtain the RB that eNB is UE scheduling according to the PHR after renewal（Resource Block, Resource Block） Quantity, then, eNB is compared the RB quantity of the UE with second parameter preset of eNB, if Resource Block quantity is less than second Parameter preset, base station to user equipment sends power control commands word f (i), and power control commands word is used for instruction user equipment reduces actual Transmission power.Wherein, the second parameter preset is relevant with the number of users and transmission bandwidth of the base station service, i.e., base station is according to service Number of users and transmission bandwidth determine the second parameter preset.

As such, it is possible to the control for passing through eNB carries out power control regulation to UE, the actual transmission work(of the UE in micro- station cell is limited Rate so that the transmission power of the UE in micro- station cell reduces reducing the UE in micro- station cell to the dry of the UE in macro station cell Disturb, to lift the handling capacity of overall cell.

And when RB quantity is more than predetermined target value, eNB to UE sends power control commands word, the power control commands word is used for lifting The transmission power of UE.

Exemplary, as shown in figure 3, when the transmission power headroom reporting that eNB is reported to UE reduces different Po, macro station With the change in gain of two kinds of cell flows during micro- station mixed networking.Wherein, flow when the baseline x of data is independent macro station networking Handling capacity, is set to Base, handling capacity during independent relative to the macro station networking of overall throughput when y-axis is grand micro- station common networking Gain, be specifically represented by [（Macro station handling capacity+micro- station handling capacity）The independent networking handling capacity of/macro station] -1.Can be with from Fig. 3 Find out, under conditions of grand micro- station common networking, the overall throughput of acquisition, relative to the gain situation of Base, with Po parameters Value it is different and different.When Po values 0,13,16,19, Power Limitation of micro- station for UE, but the totality at grand micro- station Throughput degradation, when Po takes 23, Power Limitation of micro- station for UE further increases, and micro- station UE disturbs less to macro station UE, So that grand micro- station overall throughput is in postiive gain.Wherein, the unit of Po is dB.

For example, when the Po numbers at micro- station are 0, micro- station interferes with macro station, under the conditions of common networking, overall handling capacity 19.86% is reduced relative to handling capacity of macro station when independent；When the Po for arranging micro- station is 13 or 16, between grand micro- station still There is interference, work(limited amplitude is larger because maximum of micro- station for UE is sent out, and micro- station own throughput declines larger so that grand micro- Overall throughput of standing have dropped 32.71% relative to Base when Po is 13, and when Po is 16 32.81% is have dropped；It is micro- when arranging When the Po for standing is 19, micro- station is sent out work(limited amplitude and is further reduced to the maximum of UE, and the throughput degradation at micro- station itself is larger, but It is that for reducing when the interference of macro station is 13 or 16 relative to Po, and the overall throughput at grand micro- station have dropped 26.58%；When When the Po for arranging micro- station is 23, Power Limitation increase of micro- station for UE so that micro- station throughput degradation of itself, but this When, the UE at micro- station is not almost interfered with to the UE of macro station, and so, grand micro- overall handling capacity lifting 11.54% of standing is generated Postiive gain.Here the numerical value of Po and handling capacity is not specifically limited, data above is only for example.

Generally speaking, the setting of Po values, needs according to different scenes（Compact district, open area etc.）, by network planning network optimization Emulation, get the optimized parameter of Po to get the postiive gain of handling capacity.

The embodiment of the present invention provides a kind of Poewr control method, and base station sends message by air interface to user equipment, Message includes parameter preset, and parameter preset is used to determine the second transmission power surplus of user equipment, and then receive user equipment The power headroom reporting (PHR) for reporting, power headroom reporting (PHR) includes the second transmission power surplus, and base station is according to the second transmission power surplus Power Control is carried out to user equipment, can coordinates user equipment room interference, lifted cell throughout.

The embodiment of the present invention provides a kind of method for reducing interference, as shown in figure 4, including：

301st, user equipment receives the message that base station is sent by air interface, and message includes parameter preset.

ENB by changing or increasing protocol fields, and can send message by air interface to UE, and the message includes The parameter preset Po of eNB.Parameter preset Po is the transmission power for limiting UE.

302nd, user equipment obtains the second transmission power according to the first transmission power surplus of parameter preset and user equipment Surplus.

Exemplary, after UE receives the parameter preset Po that eNB is issued, when PHR is reported to eNB, according to first The transmission power surplus penetrated in the difference of power headroom and parameter preset Po, i.e. PHR deducts the difference of Po, the PHR after being updated, The second transmission power surplus of the PHR after renewal including UE so that UE when PHR is reported to eNB triggerings, after renewal Transmission power surplus in PHR reports PHR to eNB.That is the second transmission power surplus is equal to the first transmission power surplus and presets The difference of parameter.If the first transmission power surplus is less than parameter preset, the power headroom reporting (PHR) bag that user equipment is reported to base station The first transmission power surplus, i.e. the second transmission power surplus are included equal to the first transmission power surplus.

Wherein, when the balance of user equipment of the first transmission power receives message, the transmission power surplus of user equipment.

The maximum transmission power of the balance of UE of transmission power and the difference of actual emission power, the i.e. maximum transmission power of UE subtracts Go the difference of actual emission power.

Wherein, UE can pass through in the actual emission power of PDSCH：

P_PUSCH(i)=min{P_CMAX,10log₁₀(M_PUSCH(i))+P_{O_PUSCH}(j)+α(j)·PL+△_TF(i)+f(i)}

To obtain.

Wherein, P_PUSCHI () is the actual emission power of UE；P_CMAXFor the maximum transmission power of UE, configured by eNB 's；M_PUSCHI () is the transmission bandwidth of i-th sub-frame of uplink of PUSCH, represented with RB numbers；P_{O_PUSCH}J () is that eNB is first in UE Initial value during access；α (j) be path loss compensating factor, cell-level parameter, totally 8 value, represented with 3bit, can for (0, 0.4,0.5,0.6,0.7,0.8,0.9,1), at present the default value of configuration is 0.7；PL is the downlink path damage in the assessment of UE sides Consumption；△_TFI () is adaptive encoding mode, f (i) is close-loop power control instruction, and i is subframe numbers.

303rd, user equipment reports that power headroom reporting (PHR) includes the second transmission power surplus to base station reporting power margin.

It is exemplary, UE update in the Po parameter acquirings issued according to eNB after PHR in the second transmission power surplus Afterwards, PHR is reported to eNB, the PHR includes the second transmission power surplus after updating.

304th, user equipment receives power control commands word from base station, and power command word is used to control the transmitting work(of user equipment Rate.

305th, user equipment adjusts actual emission power according to power control commands word.

Specifically, during eNB PHR upon a reception of an updated, because UE have updated the transmission power surplus of UE, for eNB For be exaggerated the actual emission power of UE falsely, thus eNB will carry out Power Control to UE.Specifically, in the power of UE Under conditions of spectrum density is constant, eNB can obtain the RB quantity that eNB is UE scheduling according to the PHR after renewal, and then, eNB should The eNB of UE is compared the RB quantity of the UE with second parameter preset of eNB, and is sent to according to comparative result renewal eNB Power control commands word f (i) of UE, in order to the transmission power that UE updates UE according to the power control commands word.Wherein, the second parameter preset It is relevant with number of users and transmission bandwidth under the base station.

If RB quantity is less than predetermined target value, eNB to UE sends power control commands word, and the power control commands word is used to indicate that UE drops The actual emission power of low UE, as such, it is possible to the control for passing through eNB carries out power control regulation to UE, limits the UE in micro- station cell Transmission power so that the transmission power of the UE in micro- station cell reduces reducing the UE in micro- station cell in macro station cell UE interference, to lift the handling capacity of overall cell.

Wherein, the initiation of the PHR of UE is on PUSCH, when UE meets PUSCH sends condition, just to send to base station PHR.Initiate PHR condition can be divided into 3 kinds, meet one condition of any of which i.e. can trigger report.One is prohibit Timer overflows, and path loss compares its variable quantity more than RRC configurations with path loss during last transmission PHR Pathchange, two is that periodic timer overflow, and three is that UE receives RRC reallocation messages, message package config containing phr Configuration, UE needs comprising PHR when first time PUSCH is sent.Here condition can also be other trigger conditions, not do here Limit.Wherein, the PHR can account for 6 bit, can report once to base station for 1s clocks UE, or and other time sets, Here do not limit.

So, when eNB is by way of setting command of eating dishes without rice or wine, and the actual emission power of UE is entered according to different Po values After row control so that the transmission power of the UE in micro- station cell is reduced, thus micro- station reduces for the uplink interference of macro station user, Coordinate the interference between user, improve the handling capacity of overall cell.Wherein, the relation between Po values and cell throughout and figure The step 203 in embodiment shown in 2 is similar to, and repeats no more here.

A kind of Poewr control method of offer of the embodiment of the present invention, user equipment receives what base station was sent by air interface Message, message includes parameter preset, and user equipment obtains the according to the first transmission power surplus of parameter preset and user equipment Two transmission power surpluses, to base station reporting power margin report, power headroom reporting (PHR) include the second transmission power surplus, then from Base station receives power control commands word, and power command word is used to control the transmission power of user equipment, real according to the adjustment of power control commands word Border transmission power, can coordinates user equipment room interference, lifted cell throughout.

The embodiment of the present invention provides a kind of base station 01, as shown in figure 5, including：

Receiving unit 011, for the power headroom reporting (PHR) that receive user equipment is reported, power headroom reporting (PHR) sets including user The first standby transmission power surplus.

Processing unit 012, for the first transmission power surplus in parameter preset and power headroom reporting (PHR), obtains the Two transmission power surpluses.And,

Control unit 013, for carrying out Power Control to user equipment according to the second transmission power surplus.

Optionally, as shown in fig. 6, control unit 013 can include the first subelement 0131 and the second subelement 0132；

First subelement 0131 is used for：When the power spectral density of user equipment is constant, base station is according to the second transmission power Whether surplus, is retrieved as the Resource Block quantity of dispatching user facility, and judge Resource Block quantity less than the second parameter preset；

Second subelement 0132 is used for：When the first subelement 0131 judges that Resource Block quantity is less than the second parameter preset When, power control commands word is sent to user equipment, power control commands word is used for instruction user equipment reduces actual emission power.

Optionally, processing unit 012 can be also used for：

Second parameter preset is determined according to the number of users and transmission bandwidth of service, and is supplied to control unit 013.

Wherein, the difference of the balance of first transmission power surplus of the second transmission power and parameter preset.

The maximum transmission power of the balance of user equipment of the first transmission power and the difference of actual emission power.

Optionally, the scope of parameter preset is 0～23 decibel.

The embodiment of the present invention provides a kind of base station, the power headroom reporting (PHR) reported by base station receive user equipment, power Headroom reporting includes the first transmission power surplus of user equipment, and then first in parameter preset and power headroom reporting (PHR) Transmission power surplus, obtains the second transmission power surplus, and base station carries out power according to the second transmission power surplus to user equipment Control, can coordinates user equipment room interference, lifted cell throughout.

The embodiment of the present invention provides a kind of base station 02, as shown in fig. 7, comprises：

Transmitting element 021, for sending message to user equipment by air interface, message includes parameter preset, presets Parameter is used to determine the second transmission power surplus of user equipment.

Receiving unit 022, for the power headroom reporting (PHR) that receive user equipment is reported, power headroom reporting (PHR) includes second Penetrate power headroom；And

Control unit 023, for carrying out Power Control to user equipment according to the second transmission power surplus.

Optionally, as shown in figure 8, control unit 023 can include the 3rd subelement 0231 and the 4th subelement 0232；

3rd subelement 0231 is used for：When the power spectral density of user equipment is constant, according to the second transmission power surplus, The Resource Block quantity of dispatching user facility is retrieved as, and judges Resource Block quantity whether less than the second parameter preset；

4th subelement 0232 can be used for：When the 3rd subelement 0231 judges Resource Block quantity less than the second default ginseng During number, power control commands word is sent to user equipment, power control commands word is used for instruction user equipment reduces actual emission power.

Optionally, processing unit 024 can be used for：Second default ginseng is determined according to the number of users and transmission bandwidth of service Number, and it is supplied to control unit 023.

Optionally, the second transmission power surplus is equal to the first transmission power surplus, or, the second transmission power surplus is equal to The difference of the first transmission power surplus and parameter preset；

Optionally, the scope of parameter preset is 0～23 decibel.

The embodiment of the present invention provides a kind of base station, and base station sends message by air interface to user equipment, and message includes Parameter preset, parameter preset is used to determine the second transmission power surplus of user equipment, and then the work(that receive user equipment is reported Rate headroom reporting, power headroom reporting (PHR) includes the second transmission power surplus, and base station sets according to the second transmission power surplus to user It is standby to carry out Power Control, can the interference of coordinates user equipment room, lift cell throughout.

The embodiment of the present invention provides a kind of user equipment 03, as shown in figure 9, including：

Receiving unit 031, for receiving the message that base station is sent by air interface, message includes parameter preset.

Acquiring unit 032, launches for obtaining second according to the first transmission power surplus of parameter preset and user equipment Power headroom；And

Reporting unit 033, for the report of base station reporting power margin, power headroom reporting (PHR) to be included more than the second transmission power Amount.

Receiving unit 031 is additionally operable to receive power control commands word from base station, and power command word is used to control sending out for user equipment Penetrate power.

Optionally, can also include：

Processing unit 034, for adjusting actual emission power according to power control commands word.

Wherein, when the balance of receiving unit 031 of the first transmission power receives message, the transmission power surplus of user equipment.

Wherein, the difference of the maximum transmission power of the balance of user equipment of the first transmission power and actual emission power.

Optionally, the scope of parameter preset is 0～23 decibel.

The embodiment of the present invention provides a kind of user equipment, and user equipment receives the message that base station is sent by air interface, Message includes parameter preset, and user equipment obtains second and launches according to the first transmission power surplus of parameter preset and user equipment Power headroom, to the report of base station reporting power margin, power headroom reporting (PHR) includes the second transmission power surplus, then connects from base station Power control commands word is received, power command word is used to control the transmission power of user equipment, and according to power control commands word actual transmission is adjusted Power, can coordinates user equipment room interference, lifted cell throughout.

The embodiment of the present invention provides a kind of base station 04, and as shown in Figure 10, the base station 04 includes：Bus 041, processor 042, Emitter 043, receptor 044 and memorizer 045, wherein, the memorizer 045 is used for store instruction, and the receptor 044 is performed The instruction is used for the power headroom reporting (PHR) that receive user equipment is reported, and power headroom reporting (PHR) includes the first transmitting work(of user equipment Rate surplus；And, processor 042 performs the first transmission power surplus and the default ginseng that the instruction is used in power headroom reporting (PHR) Number, obtains the second transmission power surplus, and carries out Power Control to user equipment according to the second transmission power surplus.

In embodiments of the present invention, optionally, processor 042 performs the instruction and is used for according to the second transmission power surplus pair User equipment carries out Power Control, including：

When the power spectral density of user equipment is constant, according to the second transmission power surplus, dispatching user facility is retrieved as Resource Block quantity；

Whether Resource Block quantity is judged less than the second parameter preset, if it is, indicating that emitter sends work(to user equipment Control command word, power control commands word is used for instruction user equipment reduces actual emission power.

In embodiments of the present invention, optionally, processor 042 performs the instruction and is additionally operable to：According to the number of users of service Determine the second parameter preset with transmission bandwidth.

In embodiments of the present invention, optionally, the balance of first transmission power surplus of the second transmission power and parameter preset Difference.

In embodiments of the present invention, wherein, the maximum transmission power and reality of the balance of user equipment of the first transmission power The difference of transmission power.

In embodiments of the present invention, optionally, the scope of parameter preset is 0～23 decibel.

Therefore, base station provided in an embodiment of the present invention, the power headroom reporting (PHR) reported by base station receive user equipment, work( Rate headroom reporting includes the first transmission power surplus of user equipment, and then the first transmission power in power headroom reporting (PHR) Surplus and parameter preset, obtain the second transmission power surplus, and base station carries out work(according to the second transmission power surplus to user equipment Rate control, can coordinates user equipment room interference, lifted cell throughout.

The embodiment of the present invention provides a kind of base station 05, and as shown in figure 11, the base station 05 includes：Bus 051, processor 052, Emitter 053, receptor 054 and memorizer 055, wherein, the memorizer 055 is used for store instruction, and the emitter 053 is performed The instruction is used to send message to user equipment by air interface, and message includes parameter preset, and parameter preset is used to determine to be used Second transmission power surplus of family equipment；Receptor 054 performs the instruction is used for the power headroom report that receive user equipment is reported Accuse, power headroom reporting (PHR) includes the second transmission power surplus；And, processor 052 performs the instruction to be used for according to the second transmitting work( Rate surplus carries out Power Control to user equipment.

In embodiments of the present invention, optionally, processor 052 performs the instruction and is used for according to the second transmission power surplus pair User equipment carries out Power Control, including：

Whether Resource Block quantity is judged less than the second parameter preset, if it is, indicating that emitter 053 sends to user equipment Power control commands word, power control commands word is used for instruction user equipment reduces actual emission power.

In embodiments of the present invention, optionally, processor 052 is additionally operable to：According to the number of users and transmission bandwidth of service Determine the second parameter preset.

In embodiments of the present invention, optionally, the second transmission power surplus is equal to the first transmission power surplus, or, the Two transmission power surpluses are equal to the difference of the first transmission power surplus and parameter preset；

Therefore, base station provided in an embodiment of the present invention, base station sends message, message package by air interface to user equipment Include parameter preset, parameter preset is used to determining the second transmission power surplus of user equipment, and then receive user equipment is reported Power headroom reporting (PHR), power headroom reporting (PHR) includes the second transmission power surplus, and base station is according to the second transmission power surplus to user Equipment carries out Power Control, can coordinates user equipment room interference, lifted cell throughout.

The embodiment of the present invention provides a kind of user equipment 06, and as shown in figure 12, the user equipment 06 includes：Bus 061, place Reason device 062, emitter 063, receptor 064 and memorizer 065, wherein, the memorizer 065 is used for store instruction, receptor For receiving the message that base station is sent by air interface, message includes parameter preset for 064 execution instruction；Processor 062 is held The row instruction is for according to the first transmission power surplus of parameter preset and user equipment the second transmission power surplus of acquisition；And, Emitter 063 performs the instruction to be used for the report of base station reporting power margin, and power headroom reporting (PHR) is included more than the second transmission power Amount, receptor 064 performs the instruction to be used to perform from base station reception power control commands word, and power command word is used to control user equipment Transmission power.

In embodiments of the present invention, optionally, processor 062 performs the instruction and is additionally operable to：

Actual emission power is adjusted according to power control commands word.

Therefore, user equipment provided in an embodiment of the present invention, user equipment receives base station by disappearing that air interface sends Breath, message includes parameter preset, and user equipment obtains second according to the first transmission power surplus of parameter preset and user equipment Transmission power surplus, to the report of base station reporting power margin, power headroom reporting (PHR) includes the second transmission power surplus, then from base Stand and receive power control commands word, power command word is used to control the transmission power of user equipment, according to the adjustment of power control commands word Actual emission power, can coordinates user equipment room interference, lifted cell throughout.

In several embodiments provided herein, it should be understood that disclosed apparatus and method, it can be passed through Its mode is realized.For example, apparatus embodiments described above are only schematic, for example, the division of the unit, and only Only a kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can be tied Close or be desirably integrated into another system, or some features can be ignored, or do not perform.It is another, it is shown or discussed Coupling each other or direct-coupling or communication connection can be the INDIRECT COUPLINGs by some interfaces, device or unit or logical Letter connection, can be electrical, mechanical or other forms.

In addition, in the equipment in each embodiment of the invention, each functional unit can be integrated in a processing unit, Can also be that the independent physics of unit includes, it is also possible to which two or more units are integrated in a unit.And it is above-mentioned Each unit both can be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.

Realizing all or part of step of said method embodiment can be completed by the related hardware of programmed instruction, front The program stated can be stored in a computer read/write memory medium, and upon execution, execution includes said method reality to the program The step of applying；And aforesaid storage medium includes：USB flash disk, portable hard drive, read only memory（Read Only Memory, referred to as ROM）, random access memory（Random Access Memory, abbreviation RAM）, magnetic disc or CD etc. are various can store The medium of program code.

The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should contain Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.

Claims

1. a kind of Poewr control method, it is characterised in that include：

The power headroom reporting (PHR) that base station receive user equipment is reported, the power headroom reporting (PHR) includes the first of the user equipment Transmission power surplus；

First transmission power surplus of the base station in parameter preset and the power headroom reporting (PHR), obtains second and launches work( Rate surplus；

When the power spectral density of the user equipment is constant, the base station is retrieved as according to the second transmission power surplus The Resource Block quantity of the dispatching user facility；

If the Resource Block quantity is less than the second parameter preset, the base station to the user equipment sends power control commands word, The power control commands word is used to indicate that the user equipment reduces actual emission power.

2. method according to claim 1, it is characterised in that methods described also includes：Use of the base station according to service Amount amount and transmission bandwidth determine second parameter preset.

3. method according to claim 1 and 2, it is characterised in that second transmission power is balance of described first Penetrate the difference of power headroom and the parameter preset.

4. method according to claim 1, it is characterised in that the balance of user equipment of first transmission power The difference of maximum transmission power and actual emission power.

5. method according to claim 1, it is characterised in that the parameter preset is arbitrary in 0～23 decibel range Value.

6. a kind of Poewr control method, it is characterised in that include：

Base station sends message by air interface to user equipment, and the message includes parameter preset, and the parameter preset is used for Determine the second transmission power surplus of the user equipment；

The base station receives the power headroom reporting (PHR) of the user equipment to report, and the power headroom reporting (PHR) includes described second Penetrate power headroom；

7. method according to claim 6, it is characterised in that methods described also includes：Use of the base station according to service Amount amount and transmission bandwidth determine second parameter preset.

8. the method according to claim 6 or 7, it is characterised in that

The second transmission power surplus is equal to the first transmission power surplus, or, the second transmission power surplus is equal to institute State the difference of the first transmission power surplus and the parameter preset；

Wherein, when the balance of user equipment of first transmission power receives the message, the transmitting of the user equipment Power headroom.

9. method according to claim 8, it is characterised in that

The maximum transmission power of the balance of user equipment of first transmission power and the difference of actual emission power.

10. method according to claim 9, it is characterised in that the parameter preset is arbitrary in 0～23 decibel range Value.

11. a kind of Poewr control methods, it is characterised in that include：

The user equipment obtains second and launches according to the first transmission power surplus of the parameter preset and the user equipment Power headroom；

The user equipment to the base station reporting power margin reports that the power headroom reporting (PHR) includes the described second transmitting work( Rate surplus；

The user equipment receives power control commands word from the base station, and the power command word is used to control the user equipment Transmission power；

The user equipment adjusts actual emission power according to the power control commands word.

12. methods according to claim 11, it is characterised in that

The second transmission power surplus is equal to the first transmission power surplus, or, described second transmission power surplus etc. In the first transmission power surplus and the difference of the parameter preset；

13. methods according to claim 12, it is characterised in that the balance of user equipment of first transmission power Maximum transmission power and actual emission power difference.

14. methods according to claim 11, it is characterised in that the parameter preset is appointing in 0～23 decibel range One value.

15. a kind of base stations, it is characterised in that include：

Receiving unit, for the power headroom reporting (PHR) that receive user equipment is reported, the power headroom reporting (PHR) includes the user First transmission power surplus of equipment；

Control unit, including the first subelement and the second subelement；First subelement is used for：When the work(of the user equipment When rate spectrum density is constant, according to the second transmission power surplus, the Resource Block quantity of the dispatching user facility is retrieved as, And judge the Resource Block quantity whether less than the second parameter preset；Second subelement is used for：When first subelement When judging that the Resource Block quantity is less than second parameter preset, power control commands word is sent to the user equipment, it is described Power control commands word is used to indicate that the user equipment reduces actual emission power.

16. base stations according to claim 15, it is characterised in that the processing unit is additionally operable to：According to the user of service Quantity and transmission bandwidth determine second parameter preset, and are supplied to described control unit.

17. base stations according to claim 15 or 16, it is characterised in that second transmission power balance of described first The difference of transmission power surplus and the parameter preset.

18. base stations according to claim 15, it is characterised in that the balance of user equipment of first transmission power Maximum transmission power and actual emission power difference.

19. base stations according to claim 15, it is characterised in that the parameter preset is appointing in 0～23 decibel range One value.

20. a kind of base stations, it is characterised in that include：

Transmitting element, for sending message to user equipment by air interface, the message includes parameter preset, described default Parameter is used to determine the second transmission power surplus of the user equipment；

Receiving unit, for receiving the power headroom reporting (PHR) of the user equipment to report, the power headroom reporting (PHR) includes described Second transmission power surplus；And,

Control unit, including the 3rd subelement and the 4th subelement；3rd subelement is used for：When the work(of the user equipment When rate spectrum density is constant, according to the second transmission power surplus, the Resource Block quantity of the dispatching user facility is retrieved as, and Judge the Resource Block quantity whether less than the second parameter preset；4th subelement is used for：When the 3rd subelement is sentenced Break the Resource Block quantity less than second parameter preset when, to the user equipment send power control commands word, the work( Control command word is used to indicate that the user equipment reduces actual emission power.

21. base stations according to claim 20, it is characterised in that processing unit is used for：According to service number of users and Transmission bandwidth determines second parameter preset, and is supplied to described control unit.

22. base stations according to claim 20 or 21, it is characterised in that the second transmission power surplus is equal to first Penetrate power headroom, or, the second transmission power surplus be equal to the first transmission power surplus and the parameter preset it Difference；

23. base stations according to claim 22, it is characterised in that the balance of user equipment of first transmission power Maximum transmission power and actual emission power difference.

24. base stations according to claim 20, it is characterised in that the parameter preset is appointing in 0～23 decibel range One value.

25. a kind of user equipmenies, it is characterised in that include：

Acquiring unit, launches for obtaining second according to the first transmission power surplus of the parameter preset and the user equipment Power headroom；And,

Reporting unit, for base station reporting power margin report, the power headroom reporting (PHR) to include the described second transmitting Power headroom；

The receiving unit is additionally operable to receive power control commands word from the base station, and the power command word is used to control the user The transmission power of equipment；

Processing unit, for adjusting actual emission power according to the power control commands word.

26. user equipmenies according to claim 25, it is characterised in that the second transmission power surplus is equal to described the One transmission power surplus, or, the second transmission power surplus is equal to the first transmission power surplus and the default ginseng The difference of number；

Wherein, when the balance of receiving unit of first transmission power receives the message, the transmitting of the user equipment Power headroom.

27. user equipmenies according to claim 26, it is characterised in that the balance of user of first transmission power The maximum transmission power of equipment and the difference of actual emission power.

28. user equipmenies according to any one of claim 25 to 27, it is characterised in that the parameter preset is 0～23 Any value in decibel range.

29. a kind of base stations, it is characterised in that include：

Receptor, for the power headroom reporting (PHR) that receive user equipment is reported, the power headroom reporting (PHR) sets including the user The first standby transmission power surplus；And,

Processor, for the first transmission power surplus in parameter preset and the power headroom reporting (PHR), obtains second Penetrate power headroom,

When the power spectral density of the user equipment is constant, according to the second transmission power surplus, the user is retrieved as The Resource Block quantity of equipment scheduling；

Whether the Resource Block quantity is judged less than the second parameter preset, if it is, indicating that emitter is sent out to the user equipment Power control commands word, the power control commands word is sent to be used to indicate that the user equipment reduces actual emission power.

30. base stations according to claim 29, it is characterised in that the processor is additionally operable to：According to the number of users of service Amount and transmission bandwidth determine second parameter preset.

31. base stations according to claim 29 or 30, it is characterised in that second transmission power balance of described first The difference of transmission power surplus and the parameter preset.

32. base stations according to claim 29, it is characterised in that the balance of user equipment of first transmission power Maximum transmission power and actual emission power difference.

33. base stations according to claim 29, it is characterised in that the parameter preset is appointing in 0～23 decibel range One value.

34. a kind of base stations, it is characterised in that include：

Emitter, for sending message to user equipment by air interface, the message includes parameter preset, the default ginseng Number is used to determine the second transmission power surplus of the user equipment；

Receptor, for receiving the power headroom reporting (PHR) of the user equipment to report, the power headroom reporting (PHR) includes described the Two transmission power surpluses；And,

Processor, is used for

Whether the Resource Block quantity is judged less than the second parameter preset, if it is, indicating that the emitter sets to the user Preparation send power control commands word, the power control commands word to be used to indicate that the user equipment reduces actual emission power.

35. base stations according to claim 34, it is characterised in that the processor is additionally operable to：According to the number of users of service Amount and transmission bandwidth determine second parameter preset.

36. base stations according to claim 34 or 35, it is characterised in that the second transmission power surplus is equal to first Penetrate power headroom, or, the second transmission power surplus be equal to the first transmission power surplus and the parameter preset it Difference；

37. base stations according to claim 36, it is characterised in that the balance of user equipment of first transmission power Maximum transmission power and actual emission power difference.

38. base stations according to claim 34, it is characterised in that the parameter preset is appointing in 0～23 decibel range One value.

39. a kind of user equipmenies, it is characterised in that include：

Processor, for obtaining second according to the first transmission power surplus of the parameter preset and the user equipment work(is launched Rate surplus；And,

Emitter, for base station reporting power margin report, the power headroom reporting (PHR) to include the described second transmitting work( Rate surplus；

The receptor is additionally operable to receive power control commands word from the base station, and the power command word sets for controlling the user Standby transmission power；

The processor is additionally operable to：Actual emission power is adjusted according to the power control commands word.

40. user equipmenies according to claim 39, it is characterised in that the second transmission power surplus is equal to described the One transmission power surplus, or, the second transmission power surplus is equal to the first transmission power surplus and the default ginseng The difference of number；

41. user equipmenies according to claim 40, it is characterised in that the balance of user of first transmission power The maximum transmission power of equipment and the difference of actual emission power.

42. user equipmenies according to claim 39 to 41 any one, it is characterised in that the parameter preset is 0～ Any value in 23 decibel ranges.