CN101998605B - Method for controlling uplink transmission power - Google Patents
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- CN101998605B CN101998605B CN200910167596.3A CN200910167596A CN101998605B CN 101998605 B CN101998605 B CN 101998605B CN 200910167596 A CN200910167596 A CN 200910167596A CN 101998605 B CN101998605 B CN 101998605B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
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- H04W52/146—Uplink power control
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Abstract
The invention discloses a method for controlling uplink transmission power. The method comprises the following steps that: a base station (BS) sends information of a gamma value corresponding to frequency partitions (FPs) in a subframe set to a terminal, wherein the subframe set comprises one or more subframes; or the BS sends the information of the gamma value corresponding to all or part of the FPs to a self-organization network (SON); or the SON sends the information of a reference gamma value corresponding to all or part of the FPs to the BS. By the method for controlling the uplink transmission power, the problems that the gamma value is inflexible to adjust and the SON and the BS lack a complete gamma value adjustment scheme are solved, and dynamic sending and adjustment of the gamma value and dynamic control of the uplink transmission power can be realized, thus uplink interference among cells can be flexibly controlled and the performance of the network can be optimized.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method for controlling uplink transmission power.
Background technology
In wireless communication system, base station is the equipment of service that provides for terminal, and it communicates by uplink downlink and terminal, and wherein, descending (that is, forward direction) refers to that base station arrives the direction of terminal, and up (that is, reverse) refers to the direction of terminal to base station.A plurality of terminals can send data by up link to base station simultaneously, also can from base station, receive data by down link simultaneously.
In order further to improve the spectrum utilization efficiency of wireless communication system, often wish that each community used whole frequency resources as much as possible, in this case, minizone is used the phase mutual interference meeting existing between the user of same frequency resources to have a strong impact on the ascending performance of wireless communication system.Research shows, uplink transmission power is carried out to rational control and can effectively control the interference between uplink cells.For example, in the prior art, to frequency partition different on whole system frequency band (Frequency Partition, referred to as FP) different expectation uplink interference noise ratios (Interference over Thermal Noise Ratio is set, referred to as IoT) value, then by formula P=f (γ, NI, SIR, PL) calculate user emission power, wherein, γ represents the up IoT factor of the expectation of frequency partition, above-mentioned formula can by up can with the control of transmitting power control inter-cell uplink interference, yet, such scheme is only divided frequency partition one time to whole frequency resource, and a γ value assignment of each frequency partition once, can reduce like this flexibility of disturbing control between uplink cells, and then affect the ascending performance of wireless communication system.
In order to meet the demand of day by day complicated mobile communication environment, current cordless communication network need to have the ability of the metrical information that a large amount of relevant devices of dynamic analysis report, and need to provide the adjustment information of relevant device configuration parameter, to reach the object that makes system performance of the entire network, covering performance and flow optimum.Self-organizing network (Self-Organization Network, referred to as SON) be exactly the related data measuring at eat dishes without rice or wine (Air Interface) by analyzing BS and MS, instruct its parameter configuration of the corresponding adjustment of BS, can realize with less manual intervention system performance of the entire network, covering performance, the optimized object of flow.SON generally includes self-configuring (self configuration) and self-optimizing (self optimization) two parts, and self-configuring is the process of BS initialization and automatic configuration, comprises cell initial, adjacent area discovery, grand BS self-configuring etc.; Self-optimizing is that the measurement result relevant with self-organization network technology of analyzing from BS/MS regulates BS parameter subtly, thus the process of the performance of optimization system (for example, service quality, network efficiency, throughput, community covering, cell capacity).In SON, in order to realize the self-optimizing (Self-optimizing FFR) of FFR, when the performance of optimization system, need to carry out between SON network and BS necessary Signalling exchange.The necessary information that SON reports by analyzing BS, sends related signaling and removes to instruct the FFR configuration information of each BS and dynamically adjust corresponding configuration parameter.Because up FFR and power control algorithm have close relationship, therefore, in order to realize the self-optimizing of FFR, need to exist between SON and BS the adjustment scheme of a set of complete γ value.
For the γ value existing in correlation technique, adjust the problem that lacks the adjustment scheme of complete γ value between ineffective words and SON and BS, not yet propose at present effective solution.
Summary of the invention
For the γ value existing in prior art, adjust the problem of the adjustment scheme that lacks complete γ value between ineffective words and SON and BS and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of method for controlling uplink transmission power, one of to address the above problem at least.
To achieve these goals, the invention provides a kind of method for controlling uplink transmission power.
According to method for controlling uplink transmission power provided by the invention, comprise: base station sends the information of the γ value that subframe set medium frequency subregion is corresponding to terminal, wherein, subframe set comprises one or more subframes.
Preferably, γ value corresponding to the different subframes in subframe set is identical or different.
Preferably, the dividing mode of the different subframe medium frequency subregions in subframe set is identical or different.
Preferably, in the situation that the γ value that dividing mode is identical and each frequency partition is corresponding of each sub-frame frequency subregion in subframe set is identical, only send a γ value.
Preferably, the information that base station sends to terminal the γ value that subframe set medium frequency subregion is corresponding comprises: base station is to the information of γ value corresponding to all or part of frequency partition in the set of terminal transmission subframe, wherein, in the situation that the information of γ value corresponding to transmitting portion frequency partition, γ value corresponding to the frequency partition not sending that terminal adopts default γ value or adopts terminal to obtain is recently as the γ value corresponding to frequency partition of transmission not.
Preferably, base station sends the information of the γ value that subframe set medium frequency subregion is corresponding to terminal by multicast signaling, clean culture signaling or broadcast signaling.
Preferably, send the information of the γ value that subframe set medium frequency subregion is corresponding to terminal in base station after, said method also comprises: after base station reception information, according to the γ value that different frequency subregion is corresponding, determine the transmitting power on corresponding frequencies subregion.
To achieve these goals, the invention provides a kind of method for controlling uplink transmission power.
Method for controlling uplink transmission power according to the present invention comprises: base station sends the information of γ value corresponding to all or part of frequency partition to self-organizing network SON.
Preferably, γ value comprise following one of at least: the assembly average of the instantaneous value of γ value, interior γ value of first scheduled time in the convergency value of γ value, first scheduled time, wherein, the γ value that the convergency value of γ value is the convergence that obtains after the adjustment of first scheduled time.
Preferably, first scheduled time comprised one of following: one or more subframes, one or more frame, one or more superframe.
Preferably, SON comprise following one of at least: the functional module in network element, network element.
Preferably, network element comprise following one of at least: base station, trunking, server, base station controller, access service network, connection service network, core net, core net gateway.
Preferably, base station sends the information of γ value according to predetermined trigger mechanism to SON, wherein, predetermined trigger mechanism comprise following one of at least: predetermined period triggers, in the situation that the overall performance of SON meet first condition trigger, in the situation that the performance of network element meets second condition triggers.
Preferably, first condition comprise following one of at least: the service quality threshold value of SON is less than the predetermined quality of service threshold value of SON, the network efficiency threshold value of SON is less than the predetermined network efficiency threshold value of SON, the throughput threshold value of SON is less than the predetermined throughput threshold value of SON, SON community covers the predetermined cell covering threshold value that threshold value is less than SON, the cell capacity threshold value of SON is less than the predetermined cell capacity threshold of SON, the quantity of frequency partition changes, the transmitting power of frequency partition changes, the target IOT rank of frequency partition changes, base station adds network.
Preferably, second condition comprise following one of at least: the service quality threshold value of network element is less than the predetermined quality of service threshold value of network element, the network efficiency threshold value of network element is less than the predetermined network efficiency threshold value of network element, the throughput threshold value of network element is less than the predetermined throughput threshold value of network element, the community of network element covers the predetermined cell covering threshold value that threshold value is less than network element, the cell capacity threshold value of network element is less than the predetermined cell capacity threshold of network element, the quantity of frequency partition changes, the transmitting power of frequency partition changes, the rank of the target expectation uplink interference noise ratio of frequency partition changes, base station adds network.
To achieve these goals, the invention provides a kind of method for controlling uplink transmission power.
Method for controlling uplink transmission power according to the present invention comprises: SON sends the information of reference γ value corresponding to all or part of frequency partition to base station.
Preferably, send the information of reference γ value corresponding to all or part of frequency partition to base station at SON before, said method also comprises: base station sends the information of γ value corresponding to all or part of frequency partition to SON.
Preferably, SON sends mode with reference to the information of γ value and comprises one of following to base station: SON to base station, send absolute value with reference to γ value, SON to base station transmission with reference to γ value and base station the difference to the γ value of SON transmission.
Preferably, send the information of reference γ value corresponding to all or part of frequency partition to base station at SON after, said method also comprises: base station is according to adjusting γ value corresponding to all or part of frequency partition with reference to γ value.
Preferably, SON comprise following one of at least: the functional module in network element, network element.
Preferably, network element comprise following one of at least: base station, trunking, server, base station controller, access service network, connection service network, core net, core net gateway.
Preferably, SON is according to predetermined trigger mechanism computing reference γ value, wherein, predetermined trigger mechanism comprise following one of at least: predetermined period triggers, in the situation that the overall performance of SON meet first condition trigger, in the situation that the performance of network element meets second condition triggers.
Preferably, first condition comprise following one of at least: the service quality threshold value of SON is less than the predetermined quality of service threshold value of SON, the network efficiency threshold value of SON is less than the predetermined network efficiency threshold value of SON, the throughput threshold value of SON is less than the predetermined throughput threshold value of SON, SON community covers the predetermined cell covering threshold value that threshold value is less than SON, the cell capacity threshold value of SON is less than the predetermined cell capacity threshold of SON, the quantity of frequency partition changes, the transmitting power of frequency partition changes, the target IOT rank of frequency partition changes, base station adds network.
Preferably, second condition comprise following one of at least: the service quality threshold value of network element is less than the predetermined quality of service threshold value of network element, the network efficiency threshold value of network element is less than the predetermined network efficiency threshold value of network element, the throughput threshold value of network element is less than the predetermined throughput threshold value of network element, the community of network element covers the predetermined cell covering threshold value that threshold value is less than network element, the cell capacity threshold value of network element is less than the predetermined cell capacity threshold of network element, the quantity of frequency partition changes, the transmitting power of frequency partition changes, the rank of the target expectation uplink interference noise ratio of frequency partition changes, base station adds network.
By the present invention, adopt base station dynamically to report γ value, base station is adjusted and be sent to the γ value that SON dynamically reports base station, base station sends different γ values to the method for terminal in different subframes, solve γ value and adjusted the problem that lacks the adjustment scheme of complete γ value between ineffective words and SON and BS, the dynamic control of dynamic transmission, adjustment and the uplink transmission power of γ value can be realized, and then the performance of inter-cell uplink interference, optimized network can be controlled neatly.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the flow chart of the method for controlling uplink transmission power of the embodiment of the present invention one;
Fig. 2 is the frequency partition schematic diagram of adjacent sub-frame of the employing different frequency resource division mode of the example 1 according to the present invention;
Fig. 3 is according to the uplink transmission power control flow chart of the γ value based on each frequency partition of the embodiment of the present invention 1;
Fig. 4 is the frequency partition schematic diagram of adjacent sub-frame of the employing same frequency resources dividing mode of the example 2 according to the present invention;
Fig. 5 is the frequency partition schematic diagram of adjacent sub-frame set of the employing different frequency resource division mode of the example 3 according to the present invention;
Fig. 6 is the frequency partition schematic diagram of adjacent sub-frame set of the employing same frequency resources dividing mode of the example 4 according to the present invention;
Fig. 7 is according to the flow chart of the method for controlling uplink transmission power of the embodiment of the present invention two;
Fig. 8 is the SON schematic network structure of example 5 of the present invention;
Fig. 9 is the schematic diagram that adopts the frequency resource allocation mode of adjacent sectors and the transmitting power of each frequency partition of FFR technology in example 5 of the present invention.
Embodiment
Functional overview
Consider the problem existing in correlation technique, the embodiment of the present invention provides a kind of uplink transmission power control program, and the treatment principle of this scheme is: base station sends the information of the γ value that subframe set medium frequency subregion is corresponding to terminal; Or base station sends the information of γ value corresponding to all or part of frequency partition to self-organizing network SON; Or SON sends the information of reference γ value corresponding to all or part of frequency partition to base station.This scheme becomes several subframe set by whole up partition of available resources, each subframe set is arranged to different frequency partition to distribute, and each frequency partition is arranged to the uplink interference rank that γ value is controlled different frequency subregion, in different subframes, different γ values is set to adjust in real time the uplink transmission power of terminal, can control neatly inter-cell uplink interference, promote the performance of wireless communication system.
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
Embodiment of the method
Embodiment mono-
According to embodiments of the invention, provide a kind of method for controlling uplink transmission power.Fig. 1 is according to the flow chart of the method for controlling uplink transmission power of the embodiment of the present invention one, and as shown in Figure 1, the method comprises that following step S102 is to step S104:
Step S102, base station sends the information of the γ value that subframe set medium frequency subregion is corresponding to terminal, and wherein, subframe set comprises one or more subframes.γ value corresponding to different subframes in above-mentioned subframe set can be identical, also can be different, and also the dividing mode of the different subframe medium frequency subregions in subframe set can be identical, and also can be different.In addition, in the situation that the γ value that dividing mode is identical and each frequency partition is corresponding of each sub-frame frequency subregion in subframe set is identical, a γ value can be only sent, particularly, a γ value can be only broadcasted.Base station can send to terminal the information of γ value corresponding to all or part of frequency partition in subframe set, wherein, in the situation that the information of γ value corresponding to transmitting portion frequency partition, γ value corresponding to frequency partition that γ value conduct corresponding to the frequency partition not sending that terminal can adopt default γ value or adopt terminal to obtain recently do not send, for example, base station sends the information of several each self-corresponding γ values of (all or part of) frequency partition in subframe set by down channel, if this does not send γ value corresponding to some frequency partition, now terminal adopts the γ value of standard default configuration, this value can be 1 or other value, or adopt obtain recently to γ value that should frequency partition, this γ value may, in upper once base station to terminal transmission, also may send to terminal in upper base station several times.
Base station can be passed through multicast signaling, clean culture signaling or broadcast signaling and to terminal, send the information of the γ value that subframe set medium frequency subregion is corresponding.
Particularly, on each frequency partition, choosing of γ value relies on the up IoT value of expecting on Gai frequency partition, neighbor cell, and concrete dependence can be specifically definite according to actual conditions, and the embodiment of the present invention is not construed as limiting this.If the up IoT value of expecting on Gai frequency partition, neighbor cell is larger, on this frequency partition, γ value is larger, if the up IoT value of expecting on Gai frequency partition, neighbor cell is less, on this frequency partition, part γ value is less.Above-mentioned γ value choose with Gai frequency partition, neighbor cell on the dependence of the up IoT value expected can specifically determine according to actual conditions, the embodiment of the present invention is not construed as limiting this.
Step S104, terminal receives after the information of the γ value that said frequencies subregion is corresponding, according to each self-corresponding γ value of different frequency subregion, determines the transmitting power on corresponding frequencies subregion.
Below in conjunction with example, the implementation procedure of the embodiment of the present invention is described in detail.
Example 1
Fig. 2 is the frequency partition schematic diagram of adjacent sub-frame of the employing different frequency resource division mode of the example 1 according to the present invention, as shown in Figure 2, in subframe 1 and subframe 2, adopted different frequency resource dividing mode to carry out the division of frequency resource, the up available frequency resources of subframe 1 and subframe 2 is divided into several frequency partition (FrequencyPartition), each frequency partition has γ value separately, and that on this this frequency band of γ value representation, expects sends by other cell terminal the uplink interference size that data cause.In subframe 1, frequency partition A, B have lower up γ value, and frequency partition C, D have higher up γ value,, for subframe 1, frequency partition A, B are upper can tolerate relatively little uplink interference, and frequency partition C, D can tolerate relatively large uplink interference.In subframe 2, frequency partition A, C have lower up γ value, and frequency partition B has higher up γ value, that is, for subframe 2, frequency partition A, C are upper can tolerate relatively little uplink interference, and frequency partition B can tolerate relatively large uplink interference.
Fig. 3 is according to the uplink transmission power control flow chart of the γ value based on each frequency partition of the embodiment of the present invention 1.It is example that Fig. 3 be take two subframe resource division modes shown in Fig. 2, has described and in this system, has taken the flow process that the terminal uplink transmission power of subframe 1 is controlled, and concrete steps are as follows:
Step 101, subframe 1 sends up available frequency resources division information by downlink signaling, this up available frequency resources is divided into A, B, C, tetra-frequency partition of D, and by the downlink signaling as shown in table 1 (table 1-A, table 1-B, table 1-C), sends the information of γ value corresponding to each frequency partition.
Table 1-A represents that subframe set is wherein continuous from receiving that the subframe set of this signaling starts to continue the γ value that this signaling is used in offset subframe set.
Table 1-B represents that the subframe set of subframe set identification used the γ value of this signaling, and subframe set wherein can be continuous, can be also discrete.
Table 1-C represents that the subframe set of identical Bitmap used corresponding γ value, and wherein the subframe set of identical Bitmap can be continuous, can be also discrete.
Table 1-A
| Syntax | Size (bit) | Notes |
| Start SubFrame Offset | 4 | The Subframe number when the indicated gama is activated.Calculation starts from the Subframe of the received message |
| For(i＝0；i＜FPCT； i++){ | ||
| FPi Gamma | 4 | Gamma value for the i-th frequency partition，FPi |
| } |
Table 1-B
| Syntax | Size (bit) | Notes |
| SubFrame Index | 4 | The index of the SubFrame. |
| For(i＝0；i＜FPCT； i++){ | ||
| FPi Gamma | 4 | Gamma value for the i-th frequency partition，FPi |
| } |
Table 1-C
| Syntax | Size (bit) | Notes |
| Bitmap | 4 | UFPC：Uplink Frequency Partition Configuration. |
| For (Bitmap＝0；Bitmap＜UFPC；Bitmap++){ | ||
| For(i＝0；i＜FPCT；i++){ |
| FPi Gamma | 4 | Gamma value for the i-th frequency partition，FPi |
| }} |
Step 102, terminal is received after the information of the γ value that each frequency partition is corresponding, determines the γ value on different frequency subregion, and the transmitting power on the subcarrier comprising at respective frequencies section post according to formula (1) computing terminal.
In formula (1), variable P
sCrepresent the transmitting power of terminal on corresponding subcarrier, N is thermal noise, IoT is the uplink interference noise ratio that base station measurement obtains, variable N and IoT inform terminal by base station by down channel, γ is the up IoT factor of expectation, L is the terminal path loss offset definite according to the down channel quality of reception, SIR
dLdescending signal interference ratio, N
rit is the reception antenna number of base station.
It should be noted that, formula (1) is according to one of implementation of the method for the embodiment of the present invention, and the every power control algorithm that can control up IoT all can be used as the optional implementation of the method, and the embodiment of the present invention is not construed as limiting this.
Example 2
Fig. 4 is the frequency partition schematic diagram of adjacent sub-frame of the employing same frequency resources dividing mode of the example 2 according to the present invention, as shown in Figure 4, in subframe 1 and subframe 2, adopted identical frequency resource dividing mode to carry out the division of frequency resource, the up available frequency resources of subframe 1 and subframe 2 is divided into several frequency partition, each frequency partition has γ value separately, and that on this this frequency band of γ value sign, expects sends by other cell terminal the uplink interference size that data cause.In subframe 1, frequency partition A, B have lower up γ value, and frequency partition C, D have higher up γ value,, for subframe 1, frequency partition A, B are upper can tolerate relatively little uplink interference, and frequency partition C, D can tolerate relatively large uplink interference.In subframe 2, frequency partition A, C have lower up γ value, and frequency partition B, D have higher up γ value,, for subframe 2, frequency partition A, C are upper can tolerate relatively little uplink interference, and frequency partition B, D can tolerate relatively large uplink interference.
Two the subframe resource division modes shown in Fig. 4 of take in Fig. 3 are example, have described the flow process of the terminal uplink transmission power control that takies subframe 1 in this system, and concrete steps are as follows:
Step 201, subframe 1 sends up available frequency resources division information by downlink signaling, this up available frequency resources is divided into A, B, C, tetra-frequency partition of D, and by the downlink signaling as shown in table 1 (table 1-A, table 1-B, table 1-C), sends the information of γ value corresponding to each frequency partition.
Step 202, terminal is received after the information of the γ value that each frequency partition is corresponding, determines γ value on different frequency subregion, and the transmitting power on the subcarrier comprising at respective frequencies section post according to formula (1) computing terminal.
Example 3
Fig. 5 is the frequency partition schematic diagram of adjacent sub-frame set of the employing different frequency resource division mode of the example 3 according to the present invention.As shown in Figure 5, in subframe set 1 and subframe set 2, adopted different frequency resource dividing mode to carry out the division of frequency resource, the up available frequency resources of subframe set 1 and subframe set 2 is divided into several frequency partition, each frequency partition has γ value separately, and that on this this frequency band of γ value sign, expects sends by other cell terminal the uplink interference size that data cause.In subframe set 1, frequency partition A, B have lower up γ value, and frequency partition C, D have higher up γ value,, for subframe 1, frequency partition A, B are upper can tolerate relatively little uplink interference, and frequency partition C, D can tolerate relatively large uplink interference.In subframe set 2, frequency partition A, C have lower up γ value, and frequency partition B has higher up γ value,, for subframe set 2, frequency partition A, C are upper can tolerate relatively little uplink interference, and frequency partition B can tolerate relatively large uplink interference.
Two the subframe mobilize resources dividing mode shown in Fig. 5 of take in Fig. 3 are example, have described the flow process of the terminal uplink transmission power control that takies subframe set 1 in this system, and concrete steps are as follows:
Step 301, subframe set 1 sends up available frequency resources division information by downlink signaling, this up available frequency resources is divided into A, B, C, tetra-frequency partition of D, and by the downlink signaling as shown in table 1 (table 1-A, table 1-B, table 1-C), sends the information of γ value corresponding to each frequency partition.
Step 302, terminal is received after the information of the γ value that each frequency partition is corresponding, determines γ value on different frequency subregion, and the transmitting power on the subcarrier comprising at respective frequencies section post according to formula (1) computing terminal.
In this example, with the frequency resource dividing mode of different subframes in subframe set, being all mutually example describes, in actual applications, subframe also can be different from the frequency resource dividing mode of closing interior different subframes, it is roughly the same that it realizes the situation that principle is identical with frequency resource dividing mode, do not repeat them here.
Example 4
Fig. 6 is the frequency partition schematic diagram of adjacent sub-frame set of the employing same frequency resources dividing mode of the example 4 according to the present invention.As shown in Figure 6, in subframe set 1 and subframe set 2, adopted identical frequency resource dividing mode to carry out the division of frequency resource, the up available frequency resources of subframe set 1 and subframe set 2 is divided into several frequency partition, each frequency partition has γ value separately, and that on this this frequency band of γ value sign, expects sends by other cell terminal the uplink interference size that data cause.In subframe set 1, frequency partition A, B have lower up γ value, and frequency partition C, D have higher up γ value,, for subframe 1, frequency partition A, B are upper can tolerate relatively little uplink interference, and frequency partition C, D can tolerate relatively large uplink interference.In subframe set 2, frequency partition A, C have lower up γ value, and frequency partition B, D have higher up γ value,, for subframe set 2, frequency partition A, C are upper can tolerate relatively little uplink interference, and frequency partition B, D can tolerate relatively large uplink interference.
Two the subframe mobilize resources dividing mode shown in Fig. 6 of take in Fig. 3 are example, have described the flow process of the terminal uplink transmission power control that takies subframe set 1 in this system, and concrete steps are as follows:
Step 401, subframe set 1 sends up available frequency resources division information by downlink signaling, this up available frequency resources is divided into A, B, C, tetra-frequency partition of D, and by the downlink signaling as shown in table 1 (table 1-A, table 1-B, table 1-C), sends the information of γ value corresponding to each frequency partition.
Step 402, terminal is received after the information of the γ value that each frequency partition is corresponding, determines γ value on different frequency subregion, and the transmitting power on the subcarrier comprising at respective frequencies section post according to formula (1) computing terminal.
Embodiment bis-
According to embodiments of the invention, provide a kind of method for controlling uplink transmission power.Fig. 7 is according to the flow chart of the method for controlling uplink transmission power of the embodiment of the present invention two, and as shown in Figure 7, the method comprises that following step S702 is to step S706:
Step S702, base station sends the information of γ value corresponding to all or part of frequency partition to SON, wherein, γ value can comprise following one of at least: the assembly average of the instantaneous value of γ value, interior γ value of first scheduled time in the convergency value of γ value, first scheduled time, wherein, the γ value that the convergency value of γ value is the convergence that obtains after the adjustment of first scheduled time, above-mentioned first scheduled time can comprise one of following: one or more subframes, one or more frame, one or more superframe.Particularly, within first scheduled time, γ value may restrain, now can adopt the convergency value of γ value as current γ value, but γ value also may be until finish also not restrain first scheduled time, the instantaneous value of the γ value in the time of now can selecting for first scheduled time finished is as current γ value,, in the situation that γ value does not restrain, γ value comprises the instantaneous value of γ value when first scheduled time finished, and also can select the instantaneous value of the γ value of any time in first scheduled time as current γ value.It should be noted that, specifically select what mode to determine that γ value can select arbitrarily, selection according to the choosing that is also not limited to foregoing description foundation.
Preferably, above-mentioned base station can be for carrying out all or part of base station of Signalling exchange with SON, and base station can send to SON the information of γ value according to predetermined trigger mechanism.SON in the method can comprise following one of at least: the functional module in network element, network element.Wherein, network element can comprise following one of at least: base station, trunking, server, base station controller, access service network, connection service network, core net, core net gateway.
Step S704, SON sends the information of reference γ value corresponding to all or part of frequency partition to base station, send this mode with reference to the information of γ value and can comprise one of following: SON sends absolute value, SON with reference to γ value and to base station, sends the difference to the γ value of SON transmission with reference to γ value and base station to base station.In this step, SON can be according to predetermined trigger mechanism computing reference γ value.
Step S706, base station is according to adjusting γ value corresponding to all or part of frequency partition with reference to γ value.
Predetermined trigger mechanism in step S702 and step S704 can comprise following one of at least: predetermined period triggers, in the situation that the overall performance of SON meet first condition trigger, in the situation that the performance of network element meets second condition triggers.Wherein, first condition can comprise following one of at least: the service quality threshold value of SON is less than the predetermined quality of service threshold value of SON, the network efficiency threshold value of SON is less than the predetermined network efficiency threshold value of SON, the throughput threshold value of SON is less than the predetermined throughput threshold value of SON, SON community covers the predetermined cell covering threshold value that threshold value is less than SON, the cell capacity threshold value of SON is less than the predetermined cell capacity threshold of SON, the quantity of frequency partition changes, the transmitting power of frequency partition changes, the target IOT rank of frequency partition changes, base station adds network, second condition can comprise following one of at least: the service quality threshold value of network element is less than the predetermined quality of service threshold value of network element, the network efficiency threshold value of network element is less than the predetermined network efficiency threshold value of network element, the throughput threshold value of network element is less than the predetermined throughput threshold value of network element, the community of network element covers the predetermined cell covering threshold value that threshold value is less than network element, the cell capacity threshold value of network element is less than the predetermined cell capacity threshold of network element, the quantity of frequency partition changes, the transmitting power of frequency partition changes, the rank of the target expectation uplink interference noise ratio of frequency partition changes, base station adds network.
It should be noted that, base station sends after the information of γ value corresponding to several (partly or entirely) frequency partition to SON, SON can adjust and send the whole of the corresponding γ value in above-mentioned several frequency partition, also can the part of the corresponding γ value in above-mentioned several frequency partition be adjusted and be sent (the γ value that component frequency subregion is corresponding do not need adjustment or the reason such as SON operational capability is limited); And, at SON, to base station, send reference γ value corresponding to several (partly or entirely) frequency partition (, γ value after adjustment) after information, base station can be adjusted and the above-mentioned γ value with reference to the corresponding whole frequency partition of γ value, also can only adjust and the above-mentioned γ value with reference to the corresponding component frequency subregion of γ value.
Below in conjunction with example, the implementation procedure of the embodiment of the present invention is described in detail.
Example 5
Fig. 8 is the SON schematic network structure of example 5 of the present invention.As shown in Figure 8, suppose to have three base stations, be respectively BS1, BS2 and BS3, wherein, the serving BS of MS1, MS2 is BS1; The serving BS of MS3, MS4 is BS2; The serving BS of MS5, MS6 is BS3.And SON can be a network entity or be present in network element as functional module, and carry out necessary Signalling exchange with BS1, BS2 and BS3.In SON, at least comprise self-optimizing FFR module (Self-Optimizing FFR module), can also comprise other functional modules.
Fig. 9 is the schematic diagram that adopts the frequency resource allocation mode of adjacent sectors and the transmitting power of each frequency partition of FFR technology in example 5 of the present invention.As shown in Figure 9, BS1, BS2 and BS3 are divided into four frequency partition: W1, W2, W3 and W4 by available frequency resources.Wherein, W1, W2, W3 belong to Reuse 3 (that is, frequency re-use factor is 3) set, and W4 belongs to Reuse 1 (that is, frequency re-use factor is 1) set.The transmitting power of each frequency partition P that satisfies condition wherein
high>=P
reusel> P
low.This example be take BS1 and is specifically described as the method that example provides the embodiment of the present invention.
Step 901, base station is to SON reporting information, this information can comprise that following content is one of at least: the number of terminals that BSID, base station connect, the location distribution information of terminal, terminal at W
1, W
2, W
3, W
4on SINR value, W
1, W
2, W
3, W
4upper business load indication information, W
1, W
2, W
3, W
4on interference strength indication information, W
1, W
2, W
3, W
4resource measurement information (ResourceMetrics, referred to as MR), W
1, W
2, W
3, W
4on γ value γ
1, γ
2, γ
3, γ
4.
Wherein, γ
1, γ
2, γ
3, γ
4it can be instantaneous value, this instantaneous value can be the instantaneous value of γ value corresponding to each FP of any time in a period of time, or adjusted value corresponding to each FP obtaining after adjusting after a while,, after adjusting not in the situation of convergence at the instantaneous value of the γ of this period of finish time time value, also can be assembly average, can also be convergency value.In the present embodiment, suppose γ
1, γ
2, γ
3, γ
4for convergency value, that is, and γ
1, γ
2, γ
3, γ
4for the γ value that adopts certain power control algolithm to obtain after adjustment after a while.It should be noted that, above-mentioned certain power control algolithm can be selected arbitrarily according to actual conditions, and the time of specifically adjusting also can be selected flexibly, and the embodiment of the present invention is not construed as limiting this.
Wherein, described a period of time can be one or more subframes or one or more frame or one or more superframe.
Step 902, the information that SON reports according to base station is determined the W of BS1
1, W
2, W
3, W
4corresponding reference γ value
and will
send to BS1, in this step, γ value that SON reports according to base station determines and can select flexibly according to actual conditions with reference to the method for γ value, and concrete definite method is existing introduction in the prior art, does not repeat them here.
Step 903, BS1 adjusts or adjusts respectively the γ value of each frequency partition in particular moment not the FFR parameter adjustment of regulation is constantly unified, and notifies terminal MS 1, the MS2 under this base station by the new γ value in frequency partition.Wherein, BS1 can directly be used SON to send
as the new γ value in frequency partition; Or BS1 sends according to SON
by the new γ value in calculative determination frequency partition
preferably, BS1 obtains after new γ value, can control the uplink transmission power of terminal.
From above description, can find out, the method for controlling uplink transmission power that the embodiment of the present invention provides can be realized the dynamic control of dynamic transmission, adjustment and the uplink transmission power of γ value, and then can control neatly the performance of inter-cell uplink interference, optimized network.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (19)
1. a method for controlling uplink transmission power, is characterized in that, comprising:
Base station sends the information of the γ value that subframe set medium frequency subregion is corresponding to terminal, wherein, described subframe set comprises one or more subframes, and described γ value is the uplink interference noise ratio IoT factor of expectation;
Described terminal is received after the information of the γ value that each frequency partition is corresponding, determines the γ value on different frequency subregion, and according to formula
Transmitting power on the subcarrier that computing terminal comprises at respective frequencies section post, wherein, variable P
crepresent the transmitting power of described terminal on corresponding subcarrier, N is thermal noise, and IoT is the uplink interference noise ratio that base station measurement obtains, and variable N and IoT inform described terminal by base station by down channel, L is the described terminal path loss offset definite according to the down channel quality of reception, SIR
dLdescending signal interference ratio, N
rit is the reception antenna number of base station.
2. method according to claim 1, is characterized in that, described γ value corresponding to different subframes in described subframe set is identical or different.
3. method according to claim 1, is characterized in that, the dividing mode of the different subframe medium frequency subregions in described subframe set is identical or different.
4. method according to claim 3, is characterized in that, in the situation that the γ value that dividing mode is identical and each frequency partition is corresponding of each sub-frame frequency subregion in described subframe set is identical, only sends a described γ value.
5. method according to claim 1, is characterized in that, the information that described base station sends to described terminal the described γ value that described subframe set medium frequency subregion is corresponding comprises:
Described base station sends the information of described γ value corresponding to all or part of frequency partition in described subframe set to described terminal, wherein, in the situation that the information of γ value corresponding to transmitting portion frequency partition, γ value corresponding to the frequency partition not sending that described terminal adopts default γ value or adopts described terminal to obtain is recently as the γ value corresponding to frequency partition of transmission not.
6. method according to claim 1, is characterized in that, described base station sends the information of the described γ value that described subframe set medium frequency subregion is corresponding to described terminal by multicast signaling, clean culture signaling or broadcast signaling.
7. according to the method described in any one in claim 1 to 6, it is characterized in that, send the information of the described γ value that described subframe set medium frequency subregion is corresponding to described terminal in described base station after, described method also comprises:
Described terminal receives after described information, according to the described γ value that different frequency subregion is corresponding, determines the transmitting power on corresponding frequencies subregion.
8. method according to claim 1, is characterized in that, also comprises:
Described base station sends the information of γ value corresponding to all or part of frequency partition to self-organizing network SON, wherein, described γ value is the uplink interference noise ratio IoT factor of expectation.
9. method according to claim 8, it is characterized in that, described γ value comprise following one of at least: the assembly average of the instantaneous value of γ value, interior γ value of first scheduled time in the convergency value of γ value, first scheduled time, wherein, the γ value that the convergency value of described γ value is the convergence that obtains after the adjustment of first scheduled time.
10. method according to claim 9, is characterized in that, described first scheduled time comprises one of following: one or more subframes, one or more frame, one or more superframe.
11. methods according to claim 8, is characterized in that, described SON comprise following one of at least: the functional module in network element, network element.
12. methods according to claim 11, is characterized in that, described network element comprise following one of at least: base station, trunking, server, base station controller, access service network, connection service network, core net, core net gateway.
13. methods according to claim 11, is characterized in that, described base station sends the information of described γ value according to predetermined trigger mechanism to described SON, wherein, described predetermined trigger mechanism comprise following one of at least: predetermined period triggering, in the situation that meeting first condition, triggers the overall performance of described SON, in the situation that the performance of described network element meets second condition, trigger, described first condition comprise following one of at least: the service quality threshold value of described SON is less than the predetermined quality of service threshold value of described SON, the network efficiency threshold value of described SON is less than the predetermined network efficiency threshold value of described SON, the throughput threshold value of described SON is less than the predetermined throughput threshold value of described SON, described SON community covers the predetermined cell covering threshold value that threshold value is less than described SON, the cell capacity threshold value of described SON is less than the predetermined cell capacity threshold of described SON, the quantity of frequency partition changes, the transmitting power of frequency partition changes, the target IOT rank of frequency partition changes, base station adds network, described second condition comprise following one of at least: the service quality threshold value of described network element is less than the predetermined quality of service threshold value of described network element, the network efficiency threshold value of described network element is less than the predetermined network efficiency threshold value of described network element, the throughput threshold value of described network element is less than the predetermined throughput threshold value of described network element, the community of described network element covers the predetermined cell covering threshold value that threshold value is less than described network element, the cell capacity threshold value of described network element is less than the predetermined cell capacity threshold of described network element, the quantity of frequency partition changes, the transmitting power of frequency partition changes, the rank of the target expectation uplink interference noise ratio of frequency partition changes, base station adds network.
14. methods according to claim 8, is characterized in that, after described base station sends the information of γ value corresponding to all or part of frequency partition to self-organizing network SON, described method also comprises:
SON sends the information of reference γ value corresponding to all or part of frequency partition to base station, wherein, described γ value is the uplink interference noise ratio IoT factor of expectation.
15. methods according to claim 14, it is characterized in that, it is one of following that described SON sends mode from the described information with reference to γ value to described base station comprises: described SON to described base station, send the described absolute value with reference to γ value, described SON to the transmission of described base station described with reference to γ value and described base station the difference to the described γ value of described SON transmission.
16. methods according to claim 14, it is characterized in that, after described SON sends the described information with reference to γ value corresponding to described all or part of frequency partition to described base station, described method also comprises: described base station is adjusted γ value corresponding to all or part of frequency partition according to described with reference to γ value.
17. methods according to claim 14, is characterized in that, described SON comprise following one of at least: the functional module in network element, network element.
18. methods according to claim 17, is characterized in that, described network element comprise following one of at least: base station, trunking, server, base station controller, access service network, connection service network, core net, core net gateway.
19. methods according to claim 17, is characterized in that, described SON calculates described with reference to γ value according to predetermined trigger mechanism, wherein, described predetermined trigger mechanism comprise following one of at least: predetermined period triggering, in the situation that meeting first condition, triggers the overall performance of described SON, in the situation that the performance of described network element meets second condition, trigger, described first condition comprise following one of at least: the service quality threshold value of described SON is less than the predetermined quality of service threshold value of described SON, the network efficiency threshold value of described SON is less than the predetermined network efficiency threshold value of described SON, the throughput threshold value of described SON is less than the predetermined throughput threshold value of described SON, described SON community covers the predetermined cell covering threshold value that threshold value is less than described SON, the cell capacity threshold value of described SON is less than the predetermined cell capacity threshold of described SON, the quantity of frequency partition changes, the transmitting power of frequency partition changes, the target IOT rank of frequency partition changes, base station adds network, described second condition comprise following one of at least: the service quality threshold value of described network element is less than the predetermined quality of service threshold value of described network element, the network efficiency threshold value of described network element is less than the predetermined network efficiency threshold value of described network element, the throughput threshold value of described network element is less than the predetermined throughput threshold value of described network element, the community of described network element covers the predetermined cell covering threshold value that threshold value is less than described network element, the cell capacity threshold value of described network element is less than the predetermined cell capacity threshold of described network element, the quantity of frequency partition changes, the transmitting power of frequency partition changes, the rank of the target expectation uplink interference noise ratio of frequency partition changes, base station adds network.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910167596.3A CN101998605B (en) | 2009-08-28 | 2009-08-28 | Method for controlling uplink transmission power |
| PCT/CN2010/073919 WO2011023021A1 (en) | 2009-08-28 | 2010-06-13 | Method and device for controlling uplink transmission power |
| JP2012525867A JP5890307B2 (en) | 2009-08-28 | 2010-06-13 | Uplink transmission power control method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910167596.3A CN101998605B (en) | 2009-08-28 | 2009-08-28 | Method for controlling uplink transmission power |
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| CN101998605A CN101998605A (en) | 2011-03-30 |
| CN101998605B true CN101998605B (en) | 2014-07-16 |
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|---|---|---|---|
| CN200910167596.3A Active CN101998605B (en) | 2009-08-28 | 2009-08-28 | Method for controlling uplink transmission power |
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|---|---|
| JP (1) | JP5890307B2 (en) |
| CN (1) | CN101998605B (en) |
| WO (1) | WO2011023021A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11844030B2 (en) | 2020-04-02 | 2023-12-12 | Parallel Wireless, Inc. | Uplink link adaptation in 5G base stations |
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| CN102845091A (en) * | 2010-04-16 | 2012-12-26 | 京瓷株式会社 | Wireless communication system, high-power base station, low-power base station and communication control method |
| CN103582099B (en) * | 2012-07-25 | 2018-06-19 | 中兴通讯股份有限公司 | A kind of ascending power control method, terminal and base station |
| US10588032B2 (en) * | 2017-11-14 | 2020-03-10 | Google Llc | Power adjustments for self-organizing networks |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2007146891A2 (en) * | 2006-06-13 | 2007-12-21 | Qualcomm Incorporated | Power control for wireless communication systems |
| US8159928B2 (en) * | 2006-10-03 | 2012-04-17 | Qualcomm Incorporated | Signal transmission in a wireless communication system |
| KR101112146B1 (en) * | 2006-10-31 | 2012-04-10 | 콸콤 인코포레이티드 | Inter-cell power control in the presence of fractional frequency reuse |
| EP2213131A4 (en) * | 2007-11-09 | 2014-01-08 | Nortel Networks Ltd | UPLINK POWER CONTROL WITH INTERFERENCE-OVER-THERMAL (LoT) LOAD CONTROL |
| US8867456B2 (en) * | 2007-11-27 | 2014-10-21 | Qualcomm Incorporated | Interface management in wireless communication system using hybrid time reuse |
| KR101545350B1 (en) * | 2008-02-01 | 2015-08-18 | 삼성전자주식회사 | / method and apparatus for transmitting/receiving reference signal in communication system |
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2009
- 2009-08-28 CN CN200910167596.3A patent/CN101998605B/en active Active
-
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| US11844030B2 (en) | 2020-04-02 | 2023-12-12 | Parallel Wireless, Inc. | Uplink link adaptation in 5G base stations |
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| Publication number | Publication date |
|---|---|
| JP5890307B2 (en) | 2016-03-22 |
| WO2011023021A1 (en) | 2011-03-03 |
| CN101998605A (en) | 2011-03-30 |
| JP2013503520A (en) | 2013-01-31 |
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