CN103634888B - User's equipment downward transmitting power division method and device in a kind of MU mimo systems - Google Patents
User's equipment downward transmitting power division method and device in a kind of MU mimo systems Download PDFInfo
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- CN103634888B CN103634888B CN201210310229.6A CN201210310229A CN103634888B CN 103634888 B CN103634888 B CN 103634888B CN 201210310229 A CN201210310229 A CN 201210310229A CN 103634888 B CN103634888 B CN 103634888B
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Abstract
This application discloses a kind of multi-user multi-antenna（MU‑MIMO）User's equipment downward transmitting power division method in system, including：A, in system initialisation phase, set in each rank modulation coding mode and the mapping table of efficiency of transmission, the mapping table, the unique one efficiency of transmission value of correspondence of each rank modulation coding mode；B, the modulation coding mode according to each user equipment in schedule information acquisition cell；C, for any user equipment in cell, the mapping table is inquired about according to the modulation coding mode of the user equipment and obtains corresponding efficiency of transmission value, the down transmitting power of the user equipment is calculated according to efficiency of transmission value；The transmission power of user equipment is the monotonic increasing function of efficiency of transmission value；D, the result of calculation according to down transmitting power, distribute corresponding transmission power to each user equipment and carry out downlink data transmission.Disclosed herein as well is user's equipment downward transmission power distributor in a kind of MU mimo systems.
Description
Technical field
The application is related to mobile communication technology field, more particularly to multi-antenna technology（MIMO, Multiple Input and
Multiple Output）Technology, more particularly to a kind of multi-user multi-antenna（MU-MIMO, Multi-User MIMO）In system
User's equipment downward transmitting power division method and device.
Background technology
With continuing to develop for GSM, MIMO technology adapts to high speed data transmission service increasingly as one kind
The necessary means of growth.MIMO technology by increasing the number of antennas of transmitting terminal and receiving terminal, using transmitting terminal and receiving terminal it
Between multiple parallel channel simultaneous transmission data, so as to improve system spectrum utilization rate.
If transmitting identical or redundancy data flow in multiple parallel channels, the reliability of system can be improved；If
Multiple parallel channels transmit different data flows, then can improve the validity of system.If multiple parallel channel transmission are not
It is from different user equipmenies with data flow（UE）, then it is UE-MIMO, the number of these parallel transmissions on identical running time-frequency resource
It is referred to as pairing UE set according to corresponding multiple UE are flowed, each UE is pairing UE.
Multiple UE down transmitting power how is distributed, the overall performance of system can be influenceed to a certain extent.Therefore, exist
In MU-MIMO system, it is necessary to take into account the power distribution problems between pairing UE.
Power distribution in existing descending MU-MIMO system is typically distributed using simplest constant power, i.e. each UE
Down transmitting power it is equal, this method is realized simple, and complexity is very low, but performance has some limitations：Carry out high
The UE of rate data transfer needs higher down transmitting power, but tends not to meet this part using constant power distribution principle
The demand of user, and the power of the UE simultaneously in holding state or lower rate transmissions can have been wasted, and cause the whole of system
Body performance is reduced.
The content of the invention
, can be to system this application provides user's equipment downward transmitting power division method in a kind of MU-MIMO system
Overall performance lifted.
User's equipment downward transmitting power division method in a kind of MU-MIMO system that the embodiment of the present application is provided, including：
A, in system initialisation phase, set in each rank modulation coding mode and the mapping table of efficiency of transmission, the mapping table,
Each rank modulation coding mode one efficiency of transmission value of unique correspondence；
B, the modulation coding mode according to each user equipment in schedule information acquisition cell；
C, for any user equipment in cell, the mapping table is inquired about according to the modulation coding mode of the user equipment
Corresponding efficiency of transmission value is obtained, the down transmitting power of the user equipment is calculated according to efficiency of transmission value；The hair of user equipment
Penetrate the monotonic increasing function that power is efficiency of transmission value；
D, the result of calculation according to down transmitting power, distribute corresponding transmission power progress descending to each user equipment
Data are sent.
It is preferred that the monotonic increasing function that the transmission power of the user equipment is efficiency of transmission value is：The hair of user equipment
Power proportional is penetrated in its efficiency of transmission value.
It is preferred that the formula for calculating the transmission power of user equipment is as follows：I=
1,2 ... ..., n, wherein PtotalIt is the total transmission power of cell radio resource, PiIt is allocated to the transmitting work(of i-th of user equipment
Rate, Eff (MCSi) it is the corresponding efficiencies of transmission of modulation coding mode MCSi that i-th of user equipment is used, kiIt is i-th of user
The power weight factor of equipment, n is the sum of user equipment in cell.
It is preferred that this method further comprises：According to the priority of i-th user equipment and/or the business of user equipment
Service quality rating, to corresponding power weight factor kiIt is adjusted.
The embodiment of the present application additionally provides user's equipment downward transmission power distributor in a kind of MU-MIMO system, should
Device is located in base station, including：
Mapping table module, in system initialisation phase, setting the mapping of each rank modulation coding mode and efficiency of transmission
In table, the mapping table, each rank modulation coding mode one efficiency of transmission value of unique correspondence；
Modulation coding mode acquisition module, the modulating-coding for obtaining each user equipment in cell according to schedule information
Mode；
Computing module, for for any user equipment in cell, being looked into according to the modulation coding mode of the user equipment
Ask the mapping table and obtain corresponding efficiency of transmission value, the down transmitting power of the user equipment is calculated according to efficiency of transmission value；
The transmission power of user equipment is the monotonic increasing function of efficiency of transmission value；
Power distribution module, the result of calculation of the down transmitting power obtained according to the computing module, to each user
Equipment distributes corresponding transmission power and carries out downlink data transmission.
It is preferred that the monotonic increasing function that the transmission power of the user equipment is efficiency of transmission value is：The hair of user equipment
Power proportional is penetrated in its efficiency of transmission value.
It is preferred that the formula for calculating the transmission power of user equipment is as follows：I=
1,2 ... ..., n, wherein PtotalIt is the total transmission power of cell radio resource, PiIt is allocated to the transmitting work(of i-th of user equipment
Rate, Eff (MCSi) it is the corresponding efficiencies of transmission of modulation coding mode MCSi that i-th of user equipment is used, kiIt is i-th of user
The power weight factor of equipment, n is the sum of user equipment in cell.
It is preferred that the device further comprises：Weight adjusting module, for the priority according to i-th of user equipment and/
Or the service quality rating of the business of user equipment, to corresponding power weight factor kiIt is adjusted.
As can be seen from the above technical solutions, according to the UE corresponding efficiencies of transmission of modulation coding mode MCS in this method,
Different power are distributed to the UE of pairing, allow channel quality preferably to use the UE of higher level modulation coding mode to distribute
Larger power, obtains higher transmission accuracy, so that the globality of lifting system with the UE for ensureing high data rate transfer
Energy.It is preferred that a power weight factor is set for each UE of pairing, by adjusting UE power weight factor, Ke Yida
To the adjustable effect of power distribution.
Brief description of the drawings
User's equipment downward transmitting power division method in a kind of MU-MIMO system that Fig. 1 provides for the embodiment of the present application
Flow chart.
Embodiment
To make the technical principle, feature and technique effect of technical scheme clearer, below in conjunction with specific reality
Example is applied technical scheme is described in detail.
The embodiment of the present application provides user's equipment downward transmitting power division method in a kind of MU-MIMO system, and it flows
Journey is as shown in figure 1, comprise the following steps that：
Step 101：In system initialisation phase, each rank modulation coding mode is set（MCS）With efficiency of transmission（Eff）Reflect
In firing table, the mapping table, per single order MCS one efficiency of transmission value of unique correspondence.
Step 102：The modulation coding mode of each UE in cell is obtained according to schedule information.
The frequency domain resource F used for cell, has multiple UE to carry out pairing transmission on the resource, and these UE collection is combined into
S, S=UE1, UE2 ..., UEn, according to scheduling result, eNB can know modulation coding modes of these UE on resource F,
Be designated as respectively MCS1, MCS2 ..., MCSn.
Step 103：For any UE in cell, eNB inquires about the mapping table according to UE modulation coding mode and obtained
Corresponding efficiency of transmission value, the down transmitting power of the UE is calculated according to efficiency of transmission value.UE transmission power is efficiency of transmission
The monotonic increasing function of value.
A kind of embodiment of calculating UE given below transmission power, transmission power is proportional to its efficiency of transmission value, calculates
Formula is as follows：I=1,2 ... ..., n, wherein PtotalIt is total transmitting work(on resource F
Rate, PiIt is the transmission power that UEi is assigned as on resource F, Eff (MCSi) it is the corresponding biographies of modulation coding mode MCSi that UEi is used
Defeated efficiency, kiIt is UEi power weight factor, n is the sum of user equipment in cell.kiIt is a positive number, span is
0.01≤ki≤ 100, k is taken under default situationsi=1.It is preferred that according to the priority of i-th user equipment and/or user equipment
The service quality rating of business, to corresponding power weight factor kiIt is adjusted.For example, for the UE of some high priorities,
Or need to ensure the UE of transmitting, the power weight factor of the UE can be tuned up, now the UE will obtain bigger hair
Penetrate power.
Step 104：ENB distributes corresponding transmission power to each UE and carried out according to the result of calculation of down transmitting power
Downlink data is sent.
The embodiment of the present application also proposes user's equipment downward transmission power distributor in a kind of MU-MIMO system, the dress
Setting in base station, including：
Mapping table module, in system initialisation phase, setting the mapping of each rank modulation coding mode and efficiency of transmission
In table, the mapping table, each rank modulation coding mode one efficiency of transmission value of unique correspondence；
Modulation coding mode acquisition module, the modulating-coding for obtaining each user equipment in cell according to schedule information
Mode；
Computing module, for for any user equipment in cell, being looked into according to the modulation coding mode of the user equipment
Ask the mapping table and obtain corresponding efficiency of transmission value, the down transmitting power of the user equipment is calculated according to efficiency of transmission value；
The transmission power of user equipment is the monotonic increasing function of efficiency of transmission value；
Power distribution module, the result of calculation of the down transmitting power obtained according to the computing module, to each user
Equipment distributes corresponding transmission power and carries out downlink data transmission.
It is preferred that the monotonic increasing function that the transmission power of the user equipment is efficiency of transmission value is：The hair of user equipment
Power proportional is penetrated in its efficiency of transmission value.
It is preferred that the formula for calculating the transmission power of user equipment is as follows：I=
1,2 ... ..., n, wherein PtotalIt is the total transmission power of cell radio resource, PiIt is allocated to the transmitting work(of i-th of user equipment
Rate, Eff (MCSi) it is the corresponding efficiencies of transmission of modulation coding mode MCSi that i-th of user equipment is used, kiIt is i-th of user
The power weight factor of equipment, n is the sum of user equipment in cell.
It is preferred that the device further comprises：Weight adjusting module, for the priority according to i-th of user equipment and/
Or the service quality rating of the business of user equipment, to corresponding power weight factor kiIt is adjusted.
The foregoing is only the preferred embodiment of the application, not to limit the protection domain of the application, it is all
Within the spirit and principle of technical scheme, any modification, equivalent substitution and improvements done etc. should be included in this Shen
Within the scope of please protecting.
Claims (8)
1. a kind of user's equipment downward transmitting power division method in multi-user multi-antenna MU-MIMO system, it is characterised in that bag
Include：
A, in system initialisation phase, set in each rank modulation coding mode and the mapping table of efficiency of transmission, the mapping table, it is each
Rank modulation coding mode one efficiency of transmission value of unique correspondence；
B, the modulation coding mode according to each user equipment in schedule information acquisition cell；
C, for any user equipment in cell, the mapping table is inquired about according to the modulation coding mode of the user equipment and obtained
Corresponding efficiency of transmission value, the down transmitting power of the user equipment is calculated according to efficiency of transmission value；The transmitting work(of user equipment
Rate is the monotonic increasing function of efficiency of transmission value；
D, the result of calculation according to down transmitting power, distribute corresponding transmission power to each user equipment and carry out downlink data
Send.
2. according to the method described in claim 1, it is characterised in that the transmission power of the user equipment is efficiency of transmission value
Monotonic increasing function is：The transmission power of user equipment is proportional to its efficiency of transmission value.
3. method according to claim 2, it is characterised in that the formula for calculating the transmission power of user equipment is as follows：Wherein PtotalIt is the total transmission power of cell radio resource, PiIt is
Distribute to the transmission power of i-th of user equipment, Eff (MCSi) it is the modulation coding mode MCS that i-th of user equipment is usediIt is right
The efficiency of transmission answered, kiIt is the power weight factor of i-th of user equipment, n is the sum of user equipment in cell.
4. method according to claim 3, it is characterised in that this method further comprises：According to i-th user equipment
The service quality rating of priority and/or the business of user equipment, to corresponding power weight factor kiIt is adjusted.
5. user's equipment downward transmission power distributor in a kind of multi-user multi-antenna MU-MIMO system, it is characterised in that should
Device is located in base station, including：
Mapping table module, should in system initialisation phase, setting each rank modulation coding mode and the mapping table of efficiency of transmission
In mapping table, each rank modulation coding mode one efficiency of transmission value of unique correspondence；
Modulation coding mode acquisition module, the modulating-coding side for obtaining each user equipment in cell according to schedule information
Formula；
Computing module, for for any user equipment in cell, institute to be inquired about according to the modulation coding mode of the user equipment
State mapping table and obtain corresponding efficiency of transmission value, the down transmitting power of the user equipment is calculated according to efficiency of transmission value；User
The transmission power of equipment is the monotonic increasing function of efficiency of transmission value；
Power distribution module, the result of calculation of the down transmitting power obtained according to the computing module, to each user equipment
Distribute corresponding transmission power and carry out downlink data transmission.
6. device according to claim 5, it is characterised in that the transmission power of the user equipment is efficiency of transmission value
Monotonic increasing function is：The transmission power of user equipment is proportional to its efficiency of transmission value.
7. device according to claim 6, it is characterised in that the formula for calculating the transmission power of user equipment is as follows：Wherein PtotalIt is the total transmission power of cell radio resource, PiIt is
Distribute to the transmission power of i-th of user equipment, Eff (MCSi) it is the modulation coding mode MCS that i-th of user equipment is usediIt is right
The efficiency of transmission answered, kiIt is the power weight factor of i-th of user equipment, n is the sum of user equipment in cell.
8. device according to claim 7, it is characterised in that the device further comprises：Weight adjusting module, for root
According to i-th user equipment priority and/or user equipment business service quality rating, to corresponding power weight factor
kiIt is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210310229.6A CN103634888B (en) | 2012-08-28 | 2012-08-28 | User's equipment downward transmitting power division method and device in a kind of MU mimo systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210310229.6A CN103634888B (en) | 2012-08-28 | 2012-08-28 | User's equipment downward transmitting power division method and device in a kind of MU mimo systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103634888A CN103634888A (en) | 2014-03-12 |
| CN103634888B true CN103634888B (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210310229.6A Expired - Fee Related CN103634888B (en) | 2012-08-28 | 2012-08-28 | User's equipment downward transmitting power division method and device in a kind of MU mimo systems |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262560B (en) * | 2014-07-15 | 2018-10-30 | 中国移动通信集团公司 | A kind of method for transmitting signals and device |
| CN109600827A (en) * | 2017-09-30 | 2019-04-09 | 中兴通讯股份有限公司 | A kind of power distribution method and device of reference signal |
| CN108880634B (en) * | 2018-06-12 | 2021-03-02 | 珠海云洲智能科技股份有限公司 | Communication method |
| CN112788721B (en) * | 2021-02-23 | 2022-07-29 | 湖南斯北图科技有限公司 | Power control method for satellite Internet of things terminal |
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|---|---|---|---|---|
| CN101431791A (en) * | 2007-12-27 | 2009-05-13 | 华为技术有限公司 | HSPA power distribution method, system and apparatus |
| CN101711058A (en) * | 2009-12-15 | 2010-05-19 | 中兴通讯股份有限公司 | Resource allocation method and resource allocation system |
| CN101998640A (en) * | 2009-08-14 | 2011-03-30 | 中兴通讯股份有限公司 | Resource allocation method and base station |
| WO2011079849A1 (en) * | 2009-12-29 | 2011-07-07 | Telecom Italia S.P.A. . | Adaptive scheduling data transmission based on the transmission power and the number of physical resource blocks |
-
2012
- 2012-08-28 CN CN201210310229.6A patent/CN103634888B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431791A (en) * | 2007-12-27 | 2009-05-13 | 华为技术有限公司 | HSPA power distribution method, system and apparatus |
| CN101998640A (en) * | 2009-08-14 | 2011-03-30 | 中兴通讯股份有限公司 | Resource allocation method and base station |
| CN101711058A (en) * | 2009-12-15 | 2010-05-19 | 中兴通讯股份有限公司 | Resource allocation method and resource allocation system |
| WO2011079849A1 (en) * | 2009-12-29 | 2011-07-07 | Telecom Italia S.P.A. . | Adaptive scheduling data transmission based on the transmission power and the number of physical resource blocks |
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