CN103298127A - PDSCH power distribution method and device - Google Patents

PDSCH power distribution method and device Download PDF

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Publication number
CN103298127A
CN103298127A CN2012100475247A CN201210047524A CN103298127A CN 103298127 A CN103298127 A CN 103298127A CN 2012100475247 A CN2012100475247 A CN 2012100475247A CN 201210047524 A CN201210047524 A CN 201210047524A CN 103298127 A CN103298127 A CN 103298127A
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channel quality
subscriber equipment
down channel
default
thr
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CN103298127B (en
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刘蓉
徐明宇
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to CN201210047524.7A priority Critical patent/CN103298127B/en
Priority to PCT/CN2013/071645 priority patent/WO2013127301A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power

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  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a PDSCH power distribution method and device which is used for dynamically distributing PDSCH power according to the variation of actual application scenarios and lowering the downlink interference among cells. The PDSCH power distribution method includes the steps of determining an actual application scene parameter of user equipment, comparing the actual application scene parameter of the user equipment with a preset threshold, and distributing the PDSCH power for the user equipment according to a comparative result.

Description

A kind of PDSCH power distribution method and device
Technical field
The present invention relates to communication technical field, relate in particular to a kind of PDSCH power distribution method and device.
Background technology
In the LTE system, descending power distribute be exactly a kind of be prerequisite to satisfy user's quality of reception, reduce the transmitting power of down channel as far as possible, to alleviate presence of intercell interference be the purpose strategy to reach.
The agreement regulation is determined every Resource Unit energy (EPRE) of descending transmission by base station eNB.Suppose that the descending residential quarter of UE dedicated reference symbols EPRE keeps constant in whole downlink system bandwidth with in all subframes, receive different residential quarter dedicated reference symbols power informations up to it.Descending residential quarter dedicated reference symbols EPRE comes from descending reference symbol transmission power and is notified by higher level parameters (Reference-signal-power).Descending reference symbol transmission power definition is that power is used for the linear averaging on the downlink resource unit (RE) of the carrying exclusive reference signal in residential quarter (cell-S RS) in all system bandwidths.Downlink physical downlink sharied signal channel (the Physical Downlink Shared Channel that existing product is realized, PDSCH) power division, be that the resource linearity that is used for carrying PDSCH data in all system bandwidths is divided equally the maximum transmission power of base station eNB, the down transmitting power of each RE is equal and fixing.
In sum, the descending PDSCH power division of prior art is that each RE linearity is divided equally the maximum transmission power of base station eNB, the down transmitting power that is each RE is equal and fixing, can not dynamically adjust according to the variation of systematic function or user situation in the practical application scene, the descending interference in minizone is bigger.
Summary of the invention
The embodiment of the invention provides a kind of PDSCH power distribution method and device, in order to realize carrying out according to the variation of practical application scene the dynamic assignment of PDSCH power, reduces the descending interference of minizone.
A kind of PDSCH power distribution method that the embodiment of the invention provides comprises:
Determine the practical application scene parameter of subscriber equipment;
Practical application scene parameter and the default thresholding of subscriber equipment are compared, and are this user equipment allocation PDSCH power according to comparative result.
A kind of PDSCH power distribution unit that the embodiment of the invention provides comprises:
Practical application scene parameter determining unit is for the practical application scene parameter of determining subscriber equipment;
Power distributing unit is used for practical application scene parameter and the default thresholding of subscriber equipment are compared, and is this user equipment allocation PDSCH power according to comparative result.
The embodiment of the invention is determined the practical application scene parameter of subscriber equipment; Practical application scene parameter and the default thresholding of subscriber equipment are compared, be this user equipment allocation PDSCH power according to comparative result, thereby realized carrying out according to the variation of practical application scene the dynamic assignment of PDSCH power, reduced the descending interference of minizone.
Description of drawings
The schematic flow sheet of a kind of PDSCH power distribution method that Fig. 1 provides for the embodiment of the invention;
The structural representation of a kind of PDSCH power distribution unit that Fig. 2 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of PDSCH power distribution method and device, in order to realize carrying out according to the variation of practical application scene the dynamic assignment of PDSCH power, reduces the descending interference of minizone.
LTE system practical application scene more complicated can realize promoting the descending performance of edge customer by what strategy, guarantees the target of user fairness simultaneously as far as possible, is embodiment of the invention technical problem to be solved.
Referring to Fig. 1, a kind of PDSCH power distribution method that the embodiment of the invention provides comprises step:
S101, determine the practical application scene parameter of subscriber equipment;
S102, practical application scene parameter and the default thresholding of subscriber equipment being compared, is this user equipment allocation PDSCH power according to comparative result.
Preferably, the practical application scene parameter of described subscriber equipment comprises: the down channel quality of the system spectral efficiency of subscriber equipment, the positional information of subscriber equipment and/or subscriber equipment.
Preferably, when described practical application scene parameter was the system spectral efficiency of subscriber equipment, described practical application scene parameter and default thresholding with subscriber equipment compared, and is this user equipment allocation PDSCH power according to comparative result, comprising:
When the system spectral efficiency of subscriber equipment less than the first default system spectral efficiency thresholding thr Freq_seff_1The time, according to default amplitude, ao 1, rise to the PDSCH power of this user equipment allocation;
When the system spectral efficiency of subscriber equipment more than or equal to thr Freq_seff_1, and less than the second default system spectral efficiency thresholding thr Freq_seff_2The time, according to default amplitude, ao 2, be adjusted into the PDSCH power of this user equipment allocation;
When the system spectral efficiency of subscriber equipment more than or equal to thr Freq_seff_2The time, according to default amplitude, ao 3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Freq_seff_1＜thr Freq_seff_2, and Δ 1＞Δ 2＞Δ 3
Preferably, described according to default amplitude, ao 2, be adjusted into the PDSCH power of this user equipment allocation, comprising:
When the system spectral efficiency of subscriber equipment is prescribed a time limit greater than default system spectral efficiency intermediate door, according to default amplitude, ao 2, be reduced to the PDSCH power of this user equipment allocation;
The system spectral efficiency intermediate door that equals to preset when the system spectral efficiency of subscriber equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the system spectral efficiency of subscriber equipment is prescribed a time limit less than default system spectral efficiency intermediate door, according to default amplitude, ao 2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described system spectral efficiency is greater than thr Freq_seff_1, and less than thr Freq_seff_2
Preferably, when described practical application scene parameter was the positional information of subscriber equipment, described practical application scene parameter and default thresholding with subscriber equipment compared, and is this user equipment allocation PDSCH power according to comparative result, comprising:
The positional information of subscriber equipment and default position thresholding are compared, determine subscriber equipment or edge customer equipment centered by this subscriber equipment;
When centered by this subscriber equipment during subscriber equipment, according to default amplitude, ao 4, be reduced to the PDSCH power of this user equipment allocation;
When this subscriber equipment is edge customer equipment, according to default amplitude, ao 5, rise to the PDSCH power of this user equipment allocation;
Wherein, Δ 4＜Δ 5
Preferably, when described practical application scene parameter comprises the down channel quality of the positional information of subscriber equipment and subscriber equipment, described practical application scene parameter and default thresholding with subscriber equipment compares, and is this user equipment allocation PDSCH power according to comparative result, comprising:
The positional information of subscriber equipment and default position thresholding are compared, determine subscriber equipment or edge customer equipment centered by this subscriber equipment;
When centered by this subscriber equipment during subscriber equipment, the down channel quality of central user equipment and default central user down channel quality thresholding are compared, be this user equipment allocation PDSCH power according to comparative result;
When this subscriber equipment is edge customer equipment, the down channel quality of edge customer equipment and default edge customer down channel quality thresholding are compared, be this user equipment allocation PDSCH power according to comparative result.
Preferably, described down channel quality with central user equipment compares with the central user down channel quality thresholding of presetting, and is this user equipment allocation PDSCH power according to comparative result, comprising:
When the down channel quality of center subscriber equipment less than the first default central user down channel quality thresholding thr Center_CQI_1The time, according to default amplitude, ao Center_1, rise to the PDSCH power of this user equipment allocation;
When the down channel quality of center subscriber equipment more than or equal to thr Center_CQI_1, and less than the second default central user down channel quality thresholding thr Center_CQI_2The time, according to default amplitude, ao Center_2, be adjusted into the PDSCH power of this user equipment allocation;
When the down channel quality of center subscriber equipment more than or equal to thr Center_CQI_2The time, according to default amplitude, ao Center_3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Center_CQI_1＜thr Center_CQI_2, and Δ Center_1＞Δ Center_2＞Δ Center_3
Preferably, described according to default amplitude, ao Center_2, be adjusted into the PDSCH power of this central user devices allocation, comprising:
When the down channel quality of center subscriber equipment is prescribed a time limit greater than default central user down channel quality intermediate door, according to default amplitude, ao Center_2, be reduced to the PDSCH power of this user equipment allocation;
The central user down channel quality intermediate door that equals to preset when the down channel quality of center subscriber equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the down channel quality of center subscriber equipment is prescribed a time limit less than default central user down channel quality intermediate door, according to default amplitude, ao Center_2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described central user down channel quality is greater than thr Center_CQI_1, and less than thr Center_CQI_2
Preferably, described down channel quality with edge customer equipment compares with the edge customer down channel quality thresholding of presetting, and is this user equipment allocation PDSCH power according to comparative result, comprising:
When the down channel quality of edge customer equipment less than the first default edge customer down channel quality thresholding thr Edge_CQI_1The time, according to default amplitude, ao Edge_1, rise to the PDSCH power of this user equipment allocation;
When the down channel quality of edge customer equipment more than or equal to thr Edge_CQI_1, and less than the second default edge customer down channel quality thresholding thr Edge_CQI_2The time, according to default amplitude, ao Edge_2, be adjusted into the PDSCH power of this user equipment allocation;
When the down channel quality of edge customer equipment more than or equal to thr Edge_CQI_2The time, according to default amplitude, ao Edge_3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Edge_CQI_1＜thr Edge_CQI_2, and Δ Edge_1＞Δ Edge_2＞Δ Edge_3
Preferably, described according to default amplitude, ao Edge_2, be adjusted into the PDSCH power of this edge customer devices allocation, comprising:
When the down channel quality of edge customer equipment is prescribed a time limit greater than default edge customer down channel quality intermediate door, according to default amplitude, ao Edge_2, be reduced to the PDSCH power of this user equipment allocation;
The edge customer down channel quality intermediate door that equals to preset when the down channel quality of edge customer equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the down channel quality of edge customer equipment is prescribed a time limit less than default edge customer down channel quality intermediate door, according to default amplitude, ao Edge_2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described edge customer down channel quality is greater than thr Edge_CQI_1, and less than thr Edge_CQI_2
Provide three specific embodiments of dynamically adjusting descending PDSCH power division below.
The embodiment of the invention has proposed three kinds respectively based on the variation of custom system performance, customer location and down channel quality, dynamically adjusts the scheme of descending PDSCH power division.Purpose be by different judgment criterion with user grouping, adopt different adjustment modes to adjust the descending PDSCH transmitting power of user then, user's down transmitting power and actual scene situation are complementary, better guarantee systematic function.Specifically describe as follows:
Embodiment one: adjust descending PDSCH power division based on the custom system spectrum efficiency.
This scheme is to utilize the user's of cycle statistics system spectral efficiency, compares according to default thresholding the user is divided into different groups, and then the PDSCH transmitting power adjusting range of the user in every group is adopted different values.Specifically be exemplified below:
Pre-defined two system spectral efficiency thresholdings are respectively thr Freq_seff_1And thr Freq_seff_2, and thr Freq_seff_1＜thr Freq_seff_2
And pre-defined three power adjusting range parameters are respectively Δ 1, Δ 2, Δ 3, and Δ 1＞Δ 2＞Δ 3
The downlink system spectrum efficiency of cycle statistics subscriber equipment.
Situation one: if statistics draws the downlink system spectrum efficiency of certain subscriber equipment less than thr Freq_seff_1, then promote this user's the descending RE of PDSCH unit transmitting power, i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ 1Wherein, P PDSCH_RE(n) represent that this user dynamically adjusts the transmitting power of the descending RE of PDSCH unit before, Δ 1Be the power adjusting range, be positive number, remain unchanged after this parameter initial configuration.
Situation two: if statistics draws the downlink system spectrum efficiency of certain subscriber equipment more than or equal to thr Freq_seff_1And less than thr Freq_seff2, then promote, reduce or this user's that remains unchanged the descending RE of PDSCH unit transmitting power, be i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ 2Wherein, P PDSCH_RE(n) represent that this user dynamically adjusts the transmitting power of the descending RE of PDSCH unit before, Δ 2Be the power adjusting range, can select different configurations according to the practical application scene, be set to positive number when namely needing bring to power, be set to negative when needing to reduce power, need keep power constant is to be set to 0, remains unchanged after this parameter initial configuration.
Situation three: if statistics draws the downlink system spectrum efficiency of certain subscriber equipment more than or equal to thr Freq_seff_2, then reduce this user's the descending RE of PDSCH unit transmitting power, i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ 3Wherein, P PDSCH_RE(n) represent that this user dynamically adjusts the transmitting power of the descending RE of PDSCH unit before, Δ 3Be the power adjusting range, be negative, remain unchanged after this parameter initial configuration.
Embodiment two: adjust descending PDSCH power division based on customer location.
This scheme is to utilize user position information that user's PDSCH transmitting power is adjusted.Specifically be exemplified below:
Pre-defined two power adjusting range parameters are respectively Δ 4, Δ 5, and Δ 4＜Δ 5
Utilize A3 affair judging process to obtain user position information, the positional information of subscriber equipment is compared with the position thresholding of presetting, determine subscriber equipment or edge customer equipment centered by this subscriber equipment, this determines that method can adopt existing techniques in realizing.
If certain subscriber equipment is central user equipment, then reduce the descending RE of the PDSCH unit transmitting power of this subscriber equipment, i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ 4Wherein, P PDSCH_RE(n) represent the dynamically transmitting power of the adjustment descending RE of PDSCH unit before of this subscriber equipment, Δ 4Be the power adjusting range, be negative, remain unchanged after this parameter initial configuration.
If certain subscriber equipment is edge customer equipment, then promote the descending RE of the PDSCH unit transmitting power of this subscriber equipment, i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ 5Wherein, P PDSCH_RE(n) represent the dynamically transmitting power of the adjustment descending RE of PDSCH unit before of this subscriber equipment, Δ 5Be the power adjusting range, be positive number, remain unchanged after this parameter initial configuration.
Embodiment three (additional project of embodiment two): increase consideration user down channel quality and adjust descending PDSCH power division.
This scheme is on the basis of embodiment two, when namely utilizing user position information, consider user's down channel quality, be channel quality indication (Channel Quality Indicator, CQI) index (index), judge whether and need adjust user's PDSCH transmitting power according to default thresholding, and concrete adjusting range, specifically be exemplified below:
Define four user's descending pilot frequency strength threshold, be respectively thr Center_CQI_1And thr Center_CQI_2, thr Edge_CQI_1And thr Edge_CQI_2, and thr Center_CQI_1＜thr Center_CQI_2, thr Edge_CQI_1＜thr Edge_CQI_2Define six power adjusting range parameters, be respectively Δ Center_1, Δ Center_2, Δ Center_3, Δ Edge_1, Δ Edge_2, Δ Edge_3, and Δ Center_1＞Δ Center_2＞Δ Center_3, Δ Edge_1＞Δ Edge_2＞Δ Edge_3
Utilize A3 affair judging process to obtain user position information, the positional information of subscriber equipment is compared with the position thresholding of presetting, determine subscriber equipment or edge customer equipment centered by this subscriber equipment, this determines that method can adopt existing techniques in realizing.
The descending CQI measurement result CQI index of cycle statistics subscriber equipment.
For example: base station side with the cycle in the downstream broadband CQI measurement result that reports each time of subscriber equipment all carry out filtering and handle, for example specifically handle formula:
CQI＝(1-α)×CQI(t-1)+α×CQI(t)
Wherein, CQI refers to the descending CQI index measurement result of cycle statistics subscriber equipment, is used for and default descending pilot frequency strength threshold is judged, initial value is made as the downstream broadband CQI measurement result that subscriber equipment that base station side receives reports for the first time in the cycle; CQI (t-1) refers to the downstream broadband CQI index of the user equipment to report that the base station previous moment is received; CQI (t) refers to the downstream broadband CQI index of the user equipment to report that the base station current time is received; α is filter factor, value between 0 and 1, i.e. α ∈ [0,1].
If certain subscriber equipment is central user equipment, then judge:
Situation one: if the descending CQI measurement result of adding up certain subscriber equipment is less than thr Center_CQI_1, then promote the descending RE of the PDSCH unit transmitting power of this subscriber equipment, i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ Center_1Wherein, P PDSCH_RE(n) represent the dynamically transmitting power of the adjustment descending RE of PDSCH unit before of this subscriber equipment, Δ Center_1Be the power adjusting range, be positive number, remain unchanged after this parameter initial configuration.
Situation two: if the descending CQI measurement result of adding up certain subscriber equipment is more than or equal to thr Center_CQI_1And less than thr Center_CQI_2, then promote or reduce or the descending RE of the PDSCH unit transmitting power of this subscriber equipment that remains unchanged, be i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ Center_2Wherein, P PDSCH_RE(n) represent the dynamically transmitting power of the adjustment descending RE of PDSCH unit before of this subscriber equipment, Δ Center_2Be the power adjusting range, can be configured according to the practical application scene, be set to positive number when namely needing bring to power, be set to negative when needing to reduce power, need keep power constant is to be set to 0, remains unchanged after this parameter initial configuration.
Situation three: if the CQI measurement result of certain subscriber equipment statistics is more than or equal to thr Center_CQI_2, then reduce the descending RE of the PDSCH unit transmitting power of this subscriber equipment, i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ Center_3Wherein, P PDSCH_RE(n) represent the dynamically transmitting power of the adjustment descending RE of PDSCH unit before of this subscriber equipment, Δ Center_3Be the power adjusting range, be negative, remain unchanged after this parameter initial configuration.
If certain subscriber equipment is edge customer equipment, then judge:
Situation one: if the descending CQI measurement result of adding up certain subscriber equipment is less than thr Edge_CQI_1, then promote the descending RE of the PDSCH unit transmitting power of this subscriber equipment, i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ Edge_1Wherein, P PDSCH_RE(n) represent the dynamically transmitting power of the adjustment descending RE of PDSCH unit before of this subscriber equipment, Δ Edge_1Be the power adjusting range, be positive number, remain unchanged after this parameter initial configuration.
Situation two: if the descending CQI measurement result of adding up certain subscriber equipment is more than or equal to thr Edge_CQI_1And less than thr Edge_CQI_2, then promote or reduce or the descending RE of the PDSCH unit transmitting power of this subscriber equipment that remains unchanged, be i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ Edge_2Wherein, P PDSCH_RE(n) represent the dynamically transmitting power of the adjustment descending RE of PDSCH unit before of this subscriber equipment, Δ Edge_2Be the power adjusting range, can be configured according to the practical application scene, be set to positive number when namely needing bring to power, be set to negative when needing to reduce power, need keep power constant is to be set to 0, remains unchanged after this parameter initial configuration.
Situation three: if the CQI measurement result of adding up certain subscriber equipment is more than or equal to thr Edge_CQI_2, then reduce the descending RE of the PDSCH unit transmitting power of this subscriber equipment, i.e. P PDSCH_RE(n+1)=P PDSCH_RE(n)+Δ Edge_3Wherein, P PDSCH_RE(n) represent the dynamically transmitting power of the adjustment descending RE of PDSCH unit before of this subscriber equipment, Δ Edge_3Be the power adjusting range, be negative, remain unchanged after this parameter initial configuration.
In addition, in actual application, allow dynamically to adjust according to different situations the adjusting range parameter Δ of the transmitting power of the descending RE of PDSCH unit, only to the Δ in above-described embodiment one 2With the Δ among the embodiment three Center_2, Δ Edge_2Effectively.
This scheme is on the basis that remains unchanged after the power adjusting range parameter initial configuration of above-described embodiment one and embodiment three designs, variation in conjunction with concrete application scenarios, differentiate interval to mediating, namely the descending PDSCH power adjusting range at the subscriber equipment of the situation two among embodiment one and the embodiment three dynamically adopts different values, specifically is exemplified below:
Thresholding thr is the descending goal systems spectrum efficiency of user or descending target CQI according to the different schemes value in the middle of pre-defined one, and the suggestion span is: among the embodiment one, and thr Freq_seff_1＜thr＜thr Freq_seff_2, among the embodiment three, thr Center_CQI_1＜thr＜thr Center_CQI_2, thr Edge_CQI_1＜thr＜thr Edge_CQI_2
The statistical measurements (downlink system spectrum efficiency or descending CQI measurement result) of differentiating interval subscriber equipment when mediating reduces the transmitting power of the descending RE of PDSCH unit during greater than thresholding thr, and namely power adjusting range parameter Δ is got negative value;
When equaling thresholding thr, the transmitting power of the descending RE of PDSCH unit is constant for the statistical measurements (downlink system spectrum efficiency or descending CQI measurement result) of differentiating interval subscriber equipment when mediating, and namely power adjusting range parameter Δ gets 0;
The statistical measurements (downlink system spectrum efficiency or descending CQI measurement result) of differentiating interval subscriber equipment when mediating improves the transmitting power of the descending RE of PDSCH unit during less than thresholding thr, namely power adjusting range parameter Δ get on the occasion of.
According to above different schemes, after user after obtaining the adjusting RE of the descending PDSCH unit transmitting power, can compare with residential quarter dedicated reference symbols EPRE, draw descending PDSCH power configuration parameter PA and the PB of user's special use, then by Radio Resource control (Radio Resource Control, RRC) reallocation message disposes to the user, finally finishes the descending PDSCH power division of user process.
Referring to Fig. 2, a kind of downlink physical downlink sharied signal channel PDSCH power distribution unit that the embodiment of the invention provides comprises:
Practical application scene parameter determining unit 11 is for the practical application scene parameter of determining subscriber equipment;
Power distributing unit 12 is used for practical application scene parameter and the default thresholding of subscriber equipment are compared, and is this user equipment allocation PDSCH power according to comparative result.
Preferably, the practical application scene parameter of described subscriber equipment comprises: the down channel quality of the system spectral efficiency of subscriber equipment, the positional information of subscriber equipment and/or subscriber equipment.
Preferably, when the practical application scene parameter of described subscriber equipment was system spectral efficiency, described power distributing unit 12 specifically was used for:
When the system spectral efficiency of subscriber equipment less than the first default system spectral efficiency thresholding thr Freq_seff_1The time, according to default amplitude, ao 1, rise to the PDSCH power of this user equipment allocation;
When the system spectral efficiency of subscriber equipment more than or equal to thr Freq_seff_1, and less than the second default system spectral efficiency thresholding thr Freq_seff_2The time, according to default amplitude, ao 2, be adjusted into the PDSCH power of this user equipment allocation;
When the system spectral efficiency of subscriber equipment more than or equal to thr Freq_seff_2The time, according to default amplitude, ao 3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Freq_seff_1＜thr Freq_seff_2, and Δ 1＞Δ 2＞Δ 3
Preferably, described power distributing unit 12 is according to default amplitude, ao 2, when being adjusted into the PDSCH power of this user equipment allocation, specifically be used for:
When the system spectral efficiency of subscriber equipment is prescribed a time limit greater than default system spectral efficiency intermediate door, according to default amplitude, ao 2, be reduced to the PDSCH power of this user equipment allocation;
The system spectral efficiency intermediate door that equals to preset when the system spectral efficiency of subscriber equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the system spectral efficiency of subscriber equipment is prescribed a time limit less than default system spectral efficiency intermediate door, according to default amplitude, ao 2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described system spectral efficiency is greater than thr Freq_seff_1, and less than thr Freq_seff_2
Preferably, when the practical application scene parameter of described subscriber equipment was positional information, described power distributing unit 12 specifically was used for:
The positional information of subscriber equipment and default position thresholding are compared, determine subscriber equipment or edge customer equipment centered by this subscriber equipment;
When centered by this subscriber equipment during subscriber equipment, according to default amplitude, ao 4, be reduced to the PDSCH power of this user equipment allocation;
When this subscriber equipment is edge customer equipment, according to default amplitude, ao 5, rise to the PDSCH power of this user equipment allocation;
Wherein, Δ 4＜Δ 5
Preferably, when described practical application scene parameter comprised positional information and down channel quality, described power distributing unit 12 specifically was used for:
The positional information of subscriber equipment and default position thresholding are compared, determine subscriber equipment or edge customer equipment centered by this subscriber equipment;
When centered by this subscriber equipment during subscriber equipment, the down channel quality of central user equipment and default central user down channel quality thresholding are compared, be this user equipment allocation PDSCH power according to comparative result;
When this subscriber equipment is edge customer equipment, the down channel quality of edge customer equipment and default edge customer down channel quality thresholding are compared, be this user equipment allocation PDSCH power according to comparative result.
Preferably, described power distributing unit 12 compares the down channel quality of central user equipment with the central user down channel quality thresholding of presetting, when being this user equipment allocation PDSCH power according to comparative result, specifically be used for:
When the down channel quality of center subscriber equipment less than the first default central user down channel quality thresholding thr Center_CQI_1The time, according to default amplitude, ao Center_1, rise to the PDSCH power of this user equipment allocation;
When the down channel quality of center subscriber equipment more than or equal to thr Center_CQI_1, and less than the second default central user down channel quality thresholding thr Center_CQI_2The time, according to default amplitude, ao Center_2, be adjusted into the PDSCH power of this user equipment allocation;
When the down channel quality of center subscriber equipment more than or equal to thr Center_CQI_2The time, according to default amplitude, ao Center_3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Center_CQI_1＜thr Center_CQI_2, and Δ Center_1＞Δ Center_2＞Δ Center_3
Preferably, described power distributing unit 12 is according to default amplitude, ao Center_2, when being adjusted into the PDSCH power of this user equipment allocation, specifically be used for:
When the down channel quality of center subscriber equipment is prescribed a time limit greater than default central user down channel quality intermediate door, according to default amplitude, ao Center_2, be reduced to the PDSCH power of this user equipment allocation;
The central user down channel quality intermediate door that equals to preset when the down channel quality of center subscriber equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the down channel quality of center subscriber equipment is prescribed a time limit less than default central user down channel quality intermediate door, according to default amplitude, ao Center_2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described central user down channel quality is greater than thr Center_CQI_1, and less than thr Center_CQI_2
Preferably, described power distributing unit 12 compares the down channel quality of edge customer equipment with the edge customer down channel quality thresholding of presetting, when being this user equipment allocation PDSCH power according to comparative result, specifically be used for:
When the down channel quality of edge customer equipment less than the first default edge customer down channel quality thresholding thr Edge_CQI_1The time, according to default amplitude, ao Edge_1, rise to the PDSCH power of this user equipment allocation;
When the down channel quality of edge customer equipment more than or equal to thr Edge_CQI_1, and less than the second default edge customer down channel quality thresholding thr Edge_CQI_2The time, according to default amplitude, ao Edge_2, be adjusted into the PDSCH power of this user equipment allocation;
When the down channel quality of edge customer equipment more than or equal to thr Edge_CQI_2The time, according to default amplitude, ao Edge_3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Edge_CQI_1＜thr Edge_CQI_2, and Δ Edge_1＞Δ Edge_2＞Δ Edge_3
Preferably, described power distributing unit 12 is according to default amplitude, ao Edge_2, when being adjusted into the PDSCH power of this edge customer devices allocation, specifically be used for:
When the down channel quality of edge customer equipment is prescribed a time limit greater than default edge customer down channel quality intermediate door, according to default amplitude, ao Edge_2, be reduced to the PDSCH power of this user equipment allocation;
The edge customer down channel quality intermediate door that equals to preset when the down channel quality of edge customer equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the down channel quality of edge customer equipment is prescribed a time limit less than default edge customer down channel quality intermediate door, according to default amplitude, ao Edge_2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described edge customer down channel quality is greater than thr Edge_CQI_1, and less than thr Edge_CQI_2
In sum, the embodiment of the invention is dynamically adjusted the transmitting power of the descending RE of PDSCH unit; Determine adjustment form and the adjusting range of the transmitting power of the descending RE of PDSCH unit of this user according to the custom system spectrum efficiency of statistics; Determine adjustment form and the adjusting range of the transmitting power of the descending RE of PDSCH unit of this user according to the customer center rim condition of statistics; Customer center rim condition and descending CQI measurement situation adjustment form and the adjusting range of determining the transmitting power of the descending RE of PDSCH unit of this user according to statistics; Employing according to the different application demand to the transmitting power promotion of user's the descending RE of PDSCH unit, the adjustment form that reduces or remain unchanged; The adjusting range of the transmitting power of the descending RE of PDSCH unit is according to different application scene flexibility and changeability.Therefore, the embodiment of the invention is by statistics and measurement result to user's different directions, transmitting power to user's the descending RE of PDSCH unit is dynamically adjusted, can more effective realization reduce the descending interference in minizone, promote the target of the descending performance of edge customer and the descending fairness of assurance user.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software embodiment or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form of the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make and carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction that computer or other programmable devices are carried out.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (20)

1. physical down link sharing channel PDSCH power distribution method is characterized in that this method comprises:
Determine the practical application scene parameter of subscriber equipment;
Practical application scene parameter and the default thresholding of subscriber equipment are compared, and are this user equipment allocation PDSCH power according to comparative result.
2. method according to claim 1 is characterized in that, the practical application scene parameter of described subscriber equipment comprises: the down channel quality of the system spectral efficiency of subscriber equipment, the positional information of subscriber equipment and/or subscriber equipment.
3. method according to claim 2, it is characterized in that, when the practical application scene parameter of described subscriber equipment is the system spectral efficiency of subscriber equipment, described practical application scene parameter and default thresholding with subscriber equipment compares, be this user equipment allocation PDSCH power according to comparative result, comprise:
When the system spectral efficiency of subscriber equipment less than the first default system spectral efficiency thresholding thr Freq_seff_1The time, according to default amplitude, ao 1, rise to the PDSCH power of this user equipment allocation;
When the system spectral efficiency of subscriber equipment more than or equal to thr Freq_seff_1, and less than the second default system spectral efficiency thresholding thr Freq_seff_2The time, according to default amplitude, ao 2, be adjusted into the PDSCH power of this user equipment allocation;
When the system spectral efficiency of subscriber equipment more than or equal to thr Freq_seff_2The time, according to default amplitude, ao 3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Freq_seff_1＜thr Freq_seff_2, and Δ 1＞Δ 2＞Δ 3
4. method according to claim 3 is characterized in that, and is described according to default amplitude, ao 2, be adjusted into the PDSCH power of this user equipment allocation, comprising:
When the system spectral efficiency of subscriber equipment is prescribed a time limit greater than default system spectral efficiency intermediate door, according to default amplitude, ao 2, be reduced to the PDSCH power of this user equipment allocation;
The system spectral efficiency intermediate door that equals to preset when the system spectral efficiency of subscriber equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the system spectral efficiency of subscriber equipment is prescribed a time limit less than default system spectral efficiency intermediate door, according to default amplitude, ao 2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described system spectral efficiency is greater than thr Freq_seff_1, and less than thr Freq_seff_2
5. method according to claim 2, it is characterized in that, when the practical application scene parameter of described subscriber equipment is the positional information of subscriber equipment, described practical application scene parameter and default thresholding with subscriber equipment compares, be this user equipment allocation PDSCH power according to comparative result, comprise:
The positional information of subscriber equipment and default position thresholding are compared, determine subscriber equipment or edge customer equipment centered by this subscriber equipment;
When centered by this subscriber equipment during subscriber equipment, according to default amplitude, ao 4, be reduced to the PDSCH power of this user equipment allocation;
When this subscriber equipment is edge customer equipment, according to default amplitude, ao 5, rise to the PDSCH power of this user equipment allocation;
Wherein, Δ 4＜Δ 5
6. method according to claim 2, it is characterized in that, when described practical application scene parameter comprises the down channel quality of the positional information of subscriber equipment and subscriber equipment, described practical application scene parameter and default thresholding with subscriber equipment compares, be this user equipment allocation PDSCH power according to comparative result, comprise:
The positional information of subscriber equipment and default position thresholding are compared, determine subscriber equipment or edge customer equipment centered by this subscriber equipment;
When centered by this subscriber equipment during subscriber equipment, the down channel quality of central user equipment and default central user down channel quality thresholding are compared, be this user equipment allocation PDSCH power according to comparative result;
When this subscriber equipment is edge customer equipment, the down channel quality of edge customer equipment and default edge customer down channel quality thresholding are compared, be this user equipment allocation PDSCH power according to comparative result.
7. method according to claim 6 is characterized in that, described down channel quality with central user equipment compares with the central user down channel quality thresholding of presetting, and is this user equipment allocation PDSCH power according to comparative result, comprising:
When the down channel quality of center subscriber equipment less than the first default central user down channel quality thresholding thr Center_CQI_1The time, according to default amplitude, ao Center_1, rise to the PDSCH power of this user equipment allocation;
When the down channel quality of center subscriber equipment more than or equal to thr Center_CQI_1, and less than the second default central user down channel quality thresholding thr Center_CQI_2The time, according to default amplitude, ao Center_2, be adjusted into the PDSCH power of this user equipment allocation;
When the down channel quality of center subscriber equipment more than or equal to thr Center_CQI_2The time, according to default amplitude, ao Center_3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Center_CQI__1＜thr Center_CQI_2, and Δ Center_1＞Δ Center_2＞Δ Center_3
8. method according to claim 7 is characterized in that, and is described according to default amplitude, ao Center_2, be adjusted into the PDSCH power of this central user devices allocation, comprising:
When the down channel quality of center subscriber equipment is prescribed a time limit greater than default central user down channel quality intermediate door, according to default amplitude, ao Center_2, be reduced to the PDSCH power of this user equipment allocation;
The central user down channel quality intermediate door that equals to preset when the down channel quality of center subscriber equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the down channel quality of center subscriber equipment is prescribed a time limit less than default central user down channel quality intermediate door, according to default amplitude, ao Center_2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described central user down channel quality is greater than thr Center_CQI_1, and less than thr Center_CQI_2
9. method according to claim 6 is characterized in that, described down channel quality with edge customer equipment compares with the edge customer down channel quality thresholding of presetting, and is this user equipment allocation PDSCH power according to comparative result, comprising:
When the down channel quality of edge customer equipment less than the first default edge customer down channel quality thresholding thr Edge_CQI_1The time, according to default amplitude, ao Edge_1, rise to the PDSCH power of this user equipment allocation;
When the down channel quality of edge customer equipment more than or equal to thr Edge_CQI_1, and less than the second default edge customer down channel quality thresholding thr Edge_CQI_2The time, according to default amplitude, ao Edge_2, be adjusted into the PDSCH power of this user equipment allocation;
When the down channel quality of edge customer equipment more than or equal to thr Edge_CQI_2The time, according to default amplitude, ao Edge_3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Edge_CQI_1＜thr Edge_CQI_2, and Δ Edge_1＞Δ Edge_2＞Δ Edge_3
10. method according to claim 9 is characterized in that, and is described according to default amplitude, ao Edge_2, be adjusted into the PDSCH power of this edge customer devices allocation, comprising:
When the down channel quality of edge customer equipment is prescribed a time limit greater than default edge customer down channel quality intermediate door, according to default amplitude, ao Edge_2, be reduced to the PDSCH power of this user equipment allocation;
The edge customer down channel quality intermediate door that equals to preset when the down channel quality of edge customer equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the down channel quality of edge customer equipment is prescribed a time limit less than default edge customer down channel quality intermediate door, according to default amplitude, ao Edge_2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described edge customer down channel quality is greater than thr Edge_CQI_1, and less than thr Edge_CQI_2
11. a physical down link sharing channel PDSCH power distribution unit is characterized in that this device comprises:
Practical application scene parameter determining unit is for the practical application scene parameter of determining subscriber equipment;
Power distributing unit is used for practical application scene parameter and the default thresholding of subscriber equipment are compared, and is this user equipment allocation PDSCH power according to comparative result.
12. device according to claim 11 is characterized in that, the practical application scene parameter of described subscriber equipment comprises: the down channel quality of the system spectral efficiency of subscriber equipment, the positional information of subscriber equipment and/or subscriber equipment.
13. device according to claim 11 is characterized in that, when described practical application scene parameter was the system spectral efficiency of subscriber equipment, described power distributing unit specifically was used for:
When the system spectral efficiency of subscriber equipment less than the first default system spectral efficiency thresholding thr Freq_seff_1The time, according to default amplitude, ao 1, rise to the PDSCH power of this user equipment allocation;
When the system spectral efficiency of subscriber equipment more than or equal to thr Freq_seff_1, and less than the second default system spectral efficiency thresholding thr Freq_seff_2The time, according to default amplitude, ao 2, be adjusted into the PDSCH power of this user equipment allocation;
When the system spectral efficiency of subscriber equipment more than or equal to thr Freq_seff_2The time, according to default amplitude, ao 3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Freq_seff_1＜thr Freq_seff_2, and Δ 1＞Δ 2＞Δ 3
14. device according to claim 13 is characterized in that, described power distributing unit is according to default amplitude, ao 2, when being adjusted into the PDSCH power of this user equipment allocation, specifically be used for:
When the system spectral efficiency of subscriber equipment is prescribed a time limit greater than default system spectral efficiency intermediate door, according to default amplitude, ao 2, be reduced to the PDSCH power of this user equipment allocation;
The system spectral efficiency intermediate door that equals to preset when the system spectral efficiency of subscriber equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the system spectral efficiency of subscriber equipment is prescribed a time limit less than default system spectral efficiency intermediate door, according to default amplitude, ao 2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described system spectral efficiency is greater than thr Freq_seff_1, and less than thr Freq_seff_2
15. device according to claim 11 is characterized in that, when described practical application scene parameter was the positional information of subscriber equipment, described power distributing unit specifically was used for:
The positional information of subscriber equipment and default position thresholding are compared, determine subscriber equipment or edge customer equipment centered by this subscriber equipment;
When centered by this subscriber equipment during subscriber equipment, according to default amplitude, ao 4, be reduced to the PDSCH power of this user equipment allocation;
When this subscriber equipment is edge customer equipment, according to default amplitude, ao 5, rise to the PDSCH power of this user equipment allocation;
Wherein, Δ 4＜Δ 5
16. device according to claim 11 is characterized in that, when the practical application scene parameter of described subscriber equipment comprised the down channel quality of the positional information of subscriber equipment and subscriber equipment, described power distributing unit specifically was used for:
The positional information of subscriber equipment and default position thresholding are compared, determine subscriber equipment or edge customer equipment centered by this subscriber equipment;
When centered by this subscriber equipment during subscriber equipment, the down channel quality of central user equipment and default central user down channel quality thresholding are compared, be this user equipment allocation PDSCH power according to comparative result;
When this subscriber equipment is edge customer equipment, the down channel quality of edge customer equipment and default edge customer down channel quality thresholding are compared, be this user equipment allocation PDSCH power according to comparative result.
17. device according to claim 16, it is characterized in that, described power distributing unit compares the down channel quality of central user equipment with the central user down channel quality thresholding of presetting, when being this user equipment allocation PDSCH power according to comparative result, specifically be used for:
When the down channel quality of center subscriber equipment less than the first default central user down channel quality thresholding thr Center_CQI_1The time, according to default amplitude, ao Center_1, rise to the PDSCH power of this user equipment allocation;
When the down channel quality of center subscriber equipment more than or equal to thr Center_CQI_1, and less than the second default central user down channel quality thresholding thr Center_CQI_2The time, according to default amplitude, ao Center_2, be adjusted into the PDSCH power of this user equipment allocation;
When the down channel quality of center subscriber equipment more than or equal to thr Center_CQI_2The time, according to default amplitude, ao Center_3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Center_CQI__1＜thr Center_CQI_2, and Δ Center_1＞Δ Center_2＞Δ Center_3
18. device according to claim 17 is characterized in that, described power distributing unit is according to default amplitude, ao Center_2, when being adjusted into the PDSCH power of this central user devices allocation, specifically be used for:
When the down channel quality of center subscriber equipment is prescribed a time limit greater than default central user down channel quality intermediate door, according to default amplitude, ao Center_2, be reduced to the PDSCH power of this user equipment allocation;
The central user down channel quality intermediate door that equals to preset when the down channel quality of center subscriber equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the down channel quality of center subscriber equipment is prescribed a time limit less than default central user down channel quality intermediate door, according to default amplitude, ao Center_2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described central user down channel quality is greater than thr Center_CQI_1, and less than thr Center_CQI_2
19. device according to claim 16, it is characterized in that, described power distributing unit compares the down channel quality of edge customer equipment with the edge customer down channel quality thresholding of presetting, when being this user equipment allocation PDSCH power according to comparative result, specifically be used for:
When the down channel quality of edge customer equipment less than the first default edge customer down channel quality thresholding thr Edge_CQI_1The time, according to default amplitude, ao Edge_1, rise to the PDSCH power of this user equipment allocation;
When the down channel quality of edge customer equipment more than or equal to thr Edge_CQI_1, and less than the second default edge customer down channel quality thresholding thr Edge_CQI_2The time, according to default amplitude, ao Edge_2, be adjusted into the PDSCH power of this user equipment allocation;
When the down channel quality of edge customer equipment more than or equal to thr Edge_CQI_2The time, according to default amplitude, ao Edge_3, be reduced to the PDSCH power of this user equipment allocation;
Wherein, thr Edge_CQI_1＜thr Edge_CQI_2, and Δ Edge_1＞Δ Edge_2＞Δ Edge_3
20. device according to claim 19 is characterized in that, described power distributing unit is according to default amplitude, ao Edge_2, when being adjusted into the PDSCH power of this edge customer devices allocation, specifically be used for:
When the down channel quality of edge customer equipment is prescribed a time limit greater than default edge customer down channel quality intermediate door, according to default amplitude, ao Edge_2, be reduced to the PDSCH power of this user equipment allocation;
The edge customer down channel quality intermediate door that equals to preset when the down channel quality of edge customer equipment in limited time, the PDSCH power that remains this user equipment allocation is constant;
When the down channel quality of edge customer equipment is prescribed a time limit less than default edge customer down channel quality intermediate door, according to default amplitude, ao Edge_2, rise to the PDSCH power of this user equipment allocation;
Wherein, the middle thresholding of described edge customer down channel quality is greater than thr Edge_CQI_1, and less than thr Edge_CQI_2
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