CN103634889A - Method and apparatus for transmission power adjustment - Google Patents

Method and apparatus for transmission power adjustment Download PDF

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CN103634889A
CN103634889A CN201210298926.4A CN201210298926A CN103634889A CN 103634889 A CN103634889 A CN 103634889A CN 201210298926 A CN201210298926 A CN 201210298926A CN 103634889 A CN103634889 A CN 103634889A
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emission port
power
adjusted
sampled point
signal received
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CN103634889B (en
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程日涛
汪颖
杨雪枫
汤利民
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China Mobile Group Design Institute Co Ltd
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China Mobile Group Design Institute Co Ltd
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Abstract

The invention discloses a method and apparatus for transmission power adjustment, the method comprising the steps of obtaining signal receiving power corresponding to specified signals transmitted by different transmitting ports of a base station apparatus connected with an indoor distribution system; determining a reference transmission port in the transmitting ports of the base station apparatus, and determining the transmitting ports other than the reference transmitting port as transmitting ports to be adjusted; and as for the transmitting ports to be adjusted, determining a transmission power compensation value between the transmitting ports to be adjusted and the reference transmitting ports according to signal receiving power corresponding to the specified signals transmitted by the transmitting ports to be adjusted and the reference transmitting port respectively, and adjusting transmitting power of the transmitting ports to be adjusted according to the transmitting power compensation value. By use of the technical scheme of the invention, the problem of inconsistent receiving power, at a terminal side, of signals transmitted by the transmitting ports of the base station apparatus in the prior art is solved, the throughput of the terminal is therefore reduced, and the system performance and user experience are improved.

Description

Transmission power adjustment method and device
Technical field
The present invention relates to power and adjust field, relate in particular to a kind of transmission power adjustment method and device.
Background technology
At present, for capacity, in the systems such as Long Term Evolution (LTE, Long Term Evolution), introduced multiple-input and multiple-output (MIMO, Multiple Input Multiple Output) technology.In MIMO indoor distributed system, adopt the mode of building multichannel compartment system to realize, indoor distributed system is connected with base station equipment, and each antenna port in indoor distributed system is connected with an emission port of base station equipment respectively.The signal that the emission port of base station equipment is launched is incoming terminal after the antenna port of indoor distributed system.
In prior art, although the transmitting power of each emission port of base station equipment is consistent, the power loss of each antenna port of indoor distributed system is different.Wherein, if carry out multichannel transformation based on existing compartment system, realize MIMO indoor distributed system, following reason all easily causes the power loss difference of each antenna port of MIMO indoor distributed system: (1) multichannel compartment system adopts different devices and cable; (2) old compartment system device and cable are aging may cause that signal power loss rises; (3) newly-built compartment system adopts different cable routes may cause that feeder line length is different from former compartment system; (4) the communication system quantity difference that multichannel compartment system closes road may cause that mixer insertion loss is different.If newly-built property point is realized MIMO indoor distributed system, also may cause due to problems such as construction, devices the power loss difference of each antenna port of MIMO indoor distributed system.
Signal incoming terminal after the antenna port of indoor distributed system of launching due to the emission port of base station equipment, and the transmitting power of each emission port of base station equipment is consistent, the power loss of each antenna port of indoor distributed system is different, so the signal that each emission port that can make base station equipment is launched is inconsistent in the received power of end side, thereby reduced the throughput of terminal, and reduced systematic function and user's experience.Wherein, from theory analysis and actual test result, when the signal of each emission port transmitting of base station equipment is the received power of end side is poor while be 8dB, the loss of terminal throughput, up to more than 16%, has directly affected systematic function and customer service experience.Under non-line-of-sight propagation environment, when the signal of each emission port transmitting of base station equipment is when the received power of end side is inconsistent, on the impact of terminal throughput as shown in Figure 1, under line-of-sight propagation environment, when the signal of each emission port transmitting of base station equipment is when the received power of end side is inconsistent, on the impact of terminal throughput as shown in Figure 2.
Summary of the invention
The embodiment of the present invention provides a kind of transmission power adjustment method and device, inconsistent in the received power of end side in order to solve the signal that in prior art, each emission port of base station equipment is launched, thereby reduced the throughput of terminal, and reduced the problem of systematic function and user's experience.
Embodiment of the present invention technical scheme is as follows:
A transmission power adjustment method, the method comprising the steps of: signal received power corresponding to specification signal that each emission port of the base station equipment that acquisition connects with indoor distributed system is launched; The signal received power corresponding to specification signal of launching according to each emission port, in each emission port of described base station equipment, determine benchmark emission port, and other each emission ports except described benchmark emission port are defined as to emission port to be adjusted; For each emission port to be adjusted, respectively according to the signal received power corresponding to specification signal of this emission port to be adjusted and the transmitting of described benchmark emission port, determine the transmitting power offset between this emission port to be adjusted and described benchmark emission port, and according to this transmitting power offset of determining, the transmitting power of this emission port to be adjusted is adjusted.
A transmitting power adjusting device, comprising: power obtains unit, the signal received power corresponding to specification signal of launching for obtaining each emission port of the base station equipment connecting with indoor distributed system; Port determining unit, for the signal received power corresponding to specification signal of launching according to each emission port, in each emission port of described base station equipment, determine benchmark emission port, and other each emission ports except described benchmark emission port are defined as to emission port to be adjusted; Power compensating value determining unit, be used for for each emission port to be adjusted, according to the signal received power corresponding to specification signal of this emission port to be adjusted and the transmitting of described benchmark emission port, determine the transmitting power offset between this emission port to be adjusted and described benchmark emission port respectively; Power adjustment unit, be used for for each emission port to be adjusted, transmitting power offset that determine according to power compensating value determining unit respectively, between this emission port to be adjusted and described benchmark emission port, adjusts the transmitting power of this emission port to be adjusted.
In embodiment of the present invention technical scheme, indoor distributed system is connected with base station equipment, when the emission port of base station equipment is carried out to transmitting power adjustment, first obtain signal received power corresponding to specification signal that each emission port of base station equipment is launched, the signal received power corresponding to specification signal of then launching according to each emission port, in each emission port of base station equipment, determine benchmark emission port, each emission port of other except benchmark emission port is emission port to be adjusted so, while carrying out transmitting power adjustment for each emission port to be adjusted, first according to the signal received power corresponding to specification signal of this emission port to be adjusted and the transmitting of benchmark emission port, determine the transmitting power offset between this emission port to be adjusted and benchmark emission port, and according to this transmitting power offset of determining, transmitting power to this emission port to be adjusted is adjusted, this emission port to be adjusted is after above-mentioned transmitting power is adjusted so, the signal received power that specification signal that the signal received power corresponding to specification signal of launching launched with benchmark emission port is corresponding is consistent, the signal that is to say each emission port transmitting of base station equipment has reached consistent in the received power of end side, thereby effectively improved the throughput of terminal, and improved systematic function and user and experienced.
Accompanying drawing explanation
Fig. 1 is in prior art, under non-line-of-sight propagation environment, and when the signal of each emission port transmitting of base station equipment is when the received power of end side is inconsistent, the schematic diagram that affects on terminal throughput;
Fig. 2 is in prior art, under line-of-sight propagation environment, and when the signal of each emission port transmitting of base station equipment is when the received power of end side is inconsistent, the schematic diagram that affects on terminal throughput;
Fig. 3 is in the embodiment of the present invention one, transmission power adjustment method schematic flow sheet;
Fig. 4 is in the embodiment of the present invention two, transmission power adjustment method specific implementation schematic flow sheet;
Fig. 5 is in the embodiment of the present invention three, transmitting power adjusting device structural representation.
Embodiment
Below in conjunction with each accompanying drawing, embodiment of the present invention technical scheme main realized to principle, embodiment and the beneficial effect that should be able to reach is at length set forth.
Embodiment mono-
As shown in Figure 3, be the transmission power adjustment method schematic flow sheet that the embodiment of the present invention one provides, its concrete handling process is as follows:
Step 31, signal received power corresponding to specification signal that each emission port of the base station equipment that acquisition connects with indoor distributed system is launched.
Indoor distributed system is connected with base station equipment, and each antenna port in indoor distributed system is connected with an emission port of base station equipment respectively, and the signal that the emission port of base station equipment is launched is incoming terminal after the antenna port of indoor distributed system.
The specification signal that each emission port of base station equipment is launched can be designated reference signal, because reference signal is all uniformly distributed based on time domain and frequency domain, therefore can accurately react the situation of multichannel unbalanced power, thereby accuracy of detection is higher.In addition, specification signal also can be for specifying down channel.Wherein, designated reference signal can be, but not limited to as cell special reference (CRS, Cell-specific Reference Signal), can certainly be other reference signals, specify down channel to can be, but not limited to as Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel), can certainly be other down channels, Physical Downlink Control Channel (PDCCH for example, Physical Downlink Control Channel), Physical Broadcast Channel (PBCH, Physical Broadcast Channel), physical hybrid automatic repeat request indicator channel (PHICH, Physical HARQ Indicator Channel, HARQ, Hybrid Automatic Repeat Request) other down channels such as.
Signal received power corresponding to specification signal that the emission port of base station equipment is launched, be the signal received power that terminal receives the specification signal that emission port launches, the embodiment of the present invention one proposes, signal received power corresponding to specification signal that the emission port obtaining is launched, can be, but not limited to comprise specification signal that emission port launches in the signal received power of each sampled point.
Wherein, the specification signal that acquisition emission port is launched can be, but not limited to as following in the mode of the signal received power of each sampled point:
Each emission port of base station equipment provides service for identical terminal, that is to say that terminal can receive the specification signal of each emission port transmitting of base station equipment simultaneously, base station equipment sends to each terminal the request of measurement, measurement carries indicating terminal periodic measurement in asking and reports the indication information of signal received power, report the cycle of signal received power to be made an appointment by base station equipment and terminal, also can be by base station equipment indication in the request of measuring (measure in request and also carry the cycle information that reports signal received power).The signal received power of the specification signal that each emission port of terminal periodic ground measurement reception base station equipment is launched, and after having measured at every turn, signal received power corresponding to each emission port that this is measured forms burst and reports, the respectively corresponding sampled point of each burst, the quantity of the burst that each terminal of the quantity of sampled point and base station equipment service reports altogether equates.
For example, the quantity of the terminal that base station is served is N, each terminal reports respectively burst Q time, the quantity of the burst that each terminal reports altogether is so N * Q, the quantity that is to say sampled point is also N * Q, if first terminal 1 has reported a burst, the sampled point that this burst is corresponding is sampled point 1, then terminal 2 and terminal 3 have reported burst simultaneously, the sampled point corresponding to burst that terminal 2 can be reported confirmed as sampled point 2, sampled point corresponding to burst that terminal 3 is reported confirmed as sampled point 3, and the rest may be inferred.
Obtain after the burst that each terminal reports respectively, can, for each burst obtaining, respectively signal received power corresponding to each emission port in this burst be confirmed as to each emission port in the signal received power of sampled point corresponding to this burst.
For example, base station equipment has k emission port, be respectively port one, port 2 ...., port k, the quantity of sampled point is n, be respectively sampled point 1, sampled point 2 ...., sampled point n, sampled point i(i=1,2 ... .n) corresponding burst is (P1 i, P2 ipj ipk i), wherein, P1 ifor the signal received power of port one at sampled point i, P2 ifor the signal received power of port 2 at sampled point i, the rest may be inferred, Pk ifor the signal received power of port k at sampled point i.
The embodiment of the present invention one proposes, above-mentioned terminal can be the mobile terminals such as mobile phone, can also be for measuring terminals such as drive test instrument, if drive test instrument can be carried out the measurement of signal received power and be carried out data processing by daemon software by the hand-held drive test instrument of tester.In addition, can also generate measurement report (MR, Measurement Report) data according to the burst of terminal to report, in the time need to carrying out transmitting power adjustment to the emission port of base station equipment, according to MR data, determine that each emission port is in the signal received power of each sampled point again.
Step 32, the signal received power corresponding to specification signal of launching according to each emission port, in each emission port of described base station equipment, determine benchmark emission port, and other each emission ports except described benchmark emission port are defined as to emission port to be adjusted.
After the signal received power of the specification signal of launching at each emission port that obtains base station equipment at each sampled point, can be for each emission port of base station equipment, calculate respectively specification signal that this emission port launches in the desired value of the signal received power of each sampled point, then the emission port of the desired value maximum calculating is confirmed as to benchmark emission port.
For example, base station equipment has k emission port, be respectively port one, port 2 ...., port k, the quantity of sampled point is n, be respectively sampled point 1, sampled point 2 ...., sampled point n, port j(j=1,2 ... the specification signal of .k) launching is respectively Pj in the signal received power of each sampled point i(i=1,2 ... .n), the specification signal that port j launches is E(Pj in the desired value of the signal received power of each sampled point i), by the E(Pj calculating i) maximum emission port confirms as benchmark emission port, other each emission port is emission port to be adjusted so.
If above-mentioned specification signal is designated reference signal, above-mentioned signal received power can be, but not limited to as Reference Signal Received Power (RSRP, Reference Signal Receiving Power), port j(j=1 now, 2, ... the specification signal of .k) launching is respectively Pji(i=1 in the signal received power of each sampled point, and 2 ... .n) also can be called RSRPji.
Step 33, for each emission port to be adjusted, respectively according to the signal received power corresponding to specification signal of this emission port to be adjusted and the transmitting of described benchmark emission port, determine the transmitting power offset between this emission port to be adjusted and described benchmark emission port, and according to this transmitting power offset of determining, the transmitting power of this emission port to be adjusted is adjusted.
When the transmitting power offset of determining between emission port to be adjusted and benchmark emission port, can be for each sampled point, the specification signal of launching according to said reference emission port is respectively in the signal received power of this sampled point, determine the power back-off factor of this sampled point, then according to the power back-off factor of this sampled point, the specification signal that this emission port to be adjusted and said reference emission port are launched is in the signal received power of this sampled point, determine that this emission port to be adjusted and said reference emission port are in the power difference of this sampled point, according to what determine, this emission port to be adjusted and described benchmark emission port are in the power difference of each sampled point, just can determine the transmitting power offset between this emission port to be adjusted and said reference emission port.
In the embodiment of the present invention one, can set in advance each signal received power scope, and set in advance the corresponding relation between signal received power scope and the power back-off factor, in the power back-off of determining sampled point because of the period of the day from 11 p.m. to 1 a.m, first in each default signal received power scope, determine specification signal that said reference emission port the launches signal received power scope under the signal received power of this sampled point, then in the corresponding relation between signal received power scope and the power back-off factor, search the corresponding power back-off factor of signal received power scope of determining, and the power back-off factor finding is confirmed as to the power back-off factor of this sampled point.
Wherein, can the corresponding relation between each signal received power scope and signalization received power scope and the power back-off factor be set according to cell throughout prioritization criteria or according to cell edge throughput prioritization criteria, be introduced respectively below.
(1) according to cell throughout prioritization criteria, arrange.
Each signal received power scope arranging according to cell throughout prioritization criteria as shown in Table 1.
Table one
Signal received power scope 1 Ps i＜-100dBm
Signal received power scope 2 -100dBm≤Ps i＜-85dBm
Signal received power scope 3 -85dBm≤Ps i
Wherein, emission port s is the benchmark emission port of determining, and i is i sampled point in n sampled point, i.e. i=1, and 2 ... .n, Ps ithe specification signal of launching for benchmark emission port is in the signal received power of sampled point i.
Accordingly, the signal received power scope arranging according to cell throughout prioritization criteria and the corresponding relation between the power back-off factor are as shown in Table 2.
Table two
Signal received power scope 1 α i=0.5
Signal received power scope 2 α i=1
Signal received power scope 3 α i=0
Wherein, α ithe power back-off factor for sampled point i.
In the power back-off of determining sampled point because of the period of the day from 11 p.m. to 1 a.m, can be first in each signal received power scope shown in table one, determine specification signal that benchmark emission port the launches signal received power scope under the signal received power of this sampled point, then in the corresponding relation shown in table two, search the corresponding power back-off factor of signal received power scope of determining, and the power back-off factor finding is confirmed as to the power back-off factor of this sampled point.
(2) according to cell edge throughput prioritization criteria, arrange.
Each signal received power scope arranging according to cell edge throughput prioritization criteria also can be as shown in Table 1, and the signal received power scope of setting and the corresponding relation between the power back-off factor are as shown in Table 3.
Table three
Signal received power scope 1 α i=1
Signal received power scope 2 α i=0.5
Signal received power scope 3 α i=0
In the power back-off of determining sampled point because of the period of the day from 11 p.m. to 1 a.m, can be first in each signal received power scope shown in table one, determine specification signal that benchmark emission port the launches signal received power scope under the signal received power of this sampled point, then in the corresponding relation shown in table three, search the corresponding power back-off factor of signal received power scope of determining, and the power back-off factor finding is confirmed as to the power back-off factor of this sampled point.
Therefore, the embodiment of the present invention one can adopt different throughput prioritization criterias that the corresponding relation between each signal received power scope and signalization received power scope and the power back-off factor is set, with the preferential throughput performance that guarantees specific region in tendentiousness ground.
In the embodiment of the present invention one, can be, but not limited to determine that by following manner emission port to be adjusted and benchmark emission port are in the power difference of sampled point:
Diffw i=α i×（Ps i-Pw i）
Wherein, emission port s is the benchmark emission port of determining, and i is i sampled point in n sampled point, i.e. i=1, and 2 ... .n, Ps ithe specification signal of launching for benchmark emission port is at the signal received power of sampled point i, Pw ithe specification signal of launching for emission port w to be adjusted is at the signal received power of sampled point i, α ifor the power back-off factor of sampled point i, Diffw ifor emission port w to be adjusted and the benchmark emission port power difference at sampled point i.
Determine emission port to be adjusted and benchmark emission port after the power difference of each sampled point, can be, but not limited to directly the desired value in the power difference of each sampled point by emission port to be adjusted and benchmark emission port, confirm as the transmitting power offset between this emission port to be adjusted and benchmark emission port, that is:
Δw=E（Diffw i）
Wherein, Δ w is the transmitting power offset between emission port w to be adjusted and benchmark emission port, Diffw ifor emission port w to be adjusted and the benchmark emission port power difference at sampled point i.
In the embodiment of the present invention one, if the emission port of the desired value maximum of the signal received power at each sampled point is confirmed as to benchmark emission port, each emission port to be adjusted is all less than benchmark emission port in the desired value of the signal received power of each sampled point in the desired value of the signal received power of each sampled point so, so after the transmitting power offset of determining between port to be adjusted and benchmark emission port, can be directly according to the transmitting power offset of determining, increase the transmitting power of this emission port to be adjusted, thereby the signal that each emission port that guarantees base station equipment is launched is consistent in the signal received power of end side.
For example, the transmitting power of emission port w to be adjusted before adjustment is Pw, Δ w is the transmitting power offset between emission port w to be adjusted and benchmark emission port, while so emission port w to be adjusted being carried out to transmitting power adjustment, can directly the transmitting power of emission port w to be adjusted be adjusted into (Pw+ Δ w).
In addition, when adjusting transmitting power, can also be using the antenna power radiation danger criterion of the power output capacity of base station equipment and indoor distributed system as constraints, for example, transmitting power after emission port w to be adjusted adjusts (Pw+ Δ w) has exceeded the power output capacity of base station equipment, or the antenna power radiation danger criterion that has exceeded indoor distributed system, so now can be according to the antenna power radiation danger criterion of the power output capacity of base station equipment or indoor distributed system, adjust the transmitting power of this emission port to be adjusted.
Also it should be noted that, due to each emission port to be adjusted is carried out after transmitting power adjustment, the transmitting power of each emission port of base station equipment may be different, therefore follow-up while carrying out signal measurement and path loss judgement, the signal that the benchmark emission port of should take is launched carries out signal measurement and path loss judgement as benchmark.
The measurement of correlation signaling that the transmission power adjustment method that the embodiment of the present invention one proposes is all supported based on existing protocol standard, therefore does not need to revise related protocol standard.
From above-mentioned processing procedure, in embodiment of the present invention technical scheme, indoor distributed system is connected with base station equipment, when the emission port of base station equipment is carried out to transmitting power adjustment, first obtain signal received power corresponding to specification signal that each emission port of base station equipment is launched, the signal received power corresponding to specification signal of then launching according to each emission port, in each emission port of base station equipment, determine benchmark emission port, each emission port of other except benchmark emission port is emission port to be adjusted so, while carrying out transmitting power adjustment for each emission port to be adjusted, first according to the signal received power corresponding to specification signal of this emission port to be adjusted and the transmitting of benchmark emission port, determine the transmitting power offset between this emission port to be adjusted and benchmark emission port, and according to this transmitting power offset of determining, transmitting power to this emission port to be adjusted is adjusted, this emission port to be adjusted is after above-mentioned transmitting power is adjusted so, the signal received power that specification signal that the signal received power corresponding to specification signal of launching launched with benchmark emission port is corresponding is consistent, the signal that is to say each emission port transmitting of base station equipment has reached consistent in the received power of end side, thereby effectively improved the throughput of terminal, and improved systematic function and user and experienced.
Provide more specifically execution mode below.
Embodiment bis-
Base station equipment has 2 emission ports, is respectively port one and port 2, and the quantity of sampled point is 35, be respectively sampled point 1, sampled point 2 ...., sampled point 35, the specification signal that port one is launched is respectively P1 in the signal received power of each sampled point i(i=1,2 ... .35), the specification signal that port 2 is launched is respectively P2 in the signal received power of each sampled point i(i=1,2 ... .35), as shown in Figure 4, be the transmission power adjustment method specific implementation schematic flow sheet that the embodiment of the present invention two proposes, its concrete handling process is as follows:
Step 41, determines that the port one of base station equipment is at the desired value E(P1i of the signal received power of each sampled point) and port 2 at the desired value E(P2 of the signal received power of each sampled point i);
Step 42, will determine the E(P1 obtaining i) and E(P2 i) compare, if E(P1 i) value larger, port one is benchmark emission port, port 2 is emission port to be adjusted, if E(P2 i) value larger, port 2 is benchmark emission port, port one is emission port to be adjusted;
Step 43, for i sampled point, in each signal received power scope shown in table one, determines specification signal that benchmark emission port the launches signal received power scope under the signal received power of sampled point i, wherein, i=1,2, ... .35, when initial, i=1;
Step 44, in the corresponding relation between the signal received power scope shown in table two and the power back-off factor, the corresponding power back-off factor of signal received power scope that finding step 43 is determined;
Step 45, the specification signal of launching according to the power back-off factor of sampled point i, emission port to be adjusted and benchmark emission port, in the signal received power of sampled point i, determines that emission port to be adjusted and benchmark emission port are at the power difference Diff of sampled point i i;
Step 46, judges whether i equals 35, if the determination result is YES, goes to step 48, if the determination result is NO, does not go to and can walk 47;
Step 47, i is set to i+1, then goes to step 43;
Step 48, determines that emission port to be adjusted and benchmark emission port are at the power difference (Diff of each sampled point 1, Diff 2... .Diff i... .Diff 35) desired value E(Diff i);
Step 49, the desired value E(Diff that step 48 is determined i) confirm as the transmitting power offset Δ between emission port to be adjusted and benchmark emission port;
Step 410, the transmitting power offset Δ of determining according to step 49, increases the transmitting power of emission port to be adjusted, if the transmitting power of emission port to be adjusted before adjustment is P, directly the transmitting power of emission port to be adjusted is adjusted into (P+ Δ).
Embodiment tri-
The transmission power adjustment method proposing based on the embodiment of the present invention one, the embodiment of the present invention three proposes a kind of transmitting power adjusting device, and its structure as shown in Figure 5, comprising:
Power obtains unit 51, the signal received power corresponding to specification signal of launching for obtaining each emission port of the base station equipment connecting with indoor distributed system;
Port determining unit 52, for the signal received power corresponding to specification signal of launching according to each emission port, in each emission port of described base station equipment, determine benchmark emission port, and other each emission ports except described benchmark emission port are defined as to emission port to be adjusted;
Power compensating value determining unit 53, be used for for each emission port to be adjusted, according to the signal received power corresponding to specification signal of this emission port to be adjusted and the transmitting of described benchmark emission port, determine the transmitting power offset between this emission port to be adjusted and described benchmark emission port respectively;
Power adjustment unit 54, be used for for each emission port to be adjusted, transmitting power offset between, this emission port to be adjusted that determine according to power compensating value determining unit 53 and described benchmark emission port, adjusts the transmitting power of this emission port to be adjusted respectively.
Preferably, power obtains signal received power corresponding to specification signal that emission port that unit 51 obtains launches and comprises specification signal that emission port launches in the signal received power of each sampled point.
More preferably, described port determining unit 52 specifically comprises:
Desired value computation subunit, for each emission port for described base station equipment, calculates respectively specification signal that this emission port launches in the desired value of the signal received power of each sampled point;
Port is determined subelement, for the emission port of desired value maximum that desired value computation subunit is calculated, confirms as benchmark emission port.
More preferably, described power adjustment unit 54, specifically for for each emission port to be adjusted, transmitting power offset between, this emission port to be adjusted that determine according to power compensating value determining unit 53 and described benchmark emission port respectively, increases the transmitting power of this emission port to be adjusted.
Preferably, described power compensating value determining unit 53 specifically comprises:
The power back-off factor is determined subelement, and for for each sampled point, the specification signal of launching according to described benchmark emission port respectively, in the signal received power of this sampled point, is determined the power back-off factor of this sampled point;
Power difference is determined subelement, be used for for each emission port to be adjusted and each sampled point, the specification signal of launching according to the power back-off factor of this sampled point, this emission port to be adjusted and described benchmark emission port respectively, in the signal received power of this sampled point, determines that this emission port to be adjusted and described benchmark emission port are in the power difference of this sampled point;
Power compensating value is determined subelement, be used for for each emission port to be adjusted, according to power difference, determine that subelement is determined, this emission port to be adjusted and described benchmark emission port, in the power difference of each sampled point, determine the transmitting power offset between this emission port to be adjusted and described benchmark emission port respectively.
More preferably, the described power back-off factor is determined subelement, specifically for for each sampled point, respectively in each default signal received power scope, determine specification signal that described benchmark emission port the launches signal received power scope under the signal received power of this sampled point, in default signal received power scope and the corresponding relation between the power back-off factor, search the corresponding power back-off factor of signal received power scope of determining, the power back-off factor finding is confirmed as to the power back-off factor of this sampled point.
More preferably, described power compensating value is determined subelement, specifically for for each emission port to be adjusted, respectively power difference is determined to that subelement is determined, this emission port to be adjusted and described benchmark emission port, in the desired value of the power difference of each sampled point, confirm as the transmitting power offset between this emission port to be adjusted and described benchmark emission port.
Preferably, described power acquisition unit 51 specifically comprises:
Power obtains subelement, the burst reporting for obtaining each terminal periodic that the base station equipment that is connected with indoor distributed system serves, wherein, the respectively corresponding sampled point of each burst obtaining, and each burst comprises the signal received power that reports the terminal of this burst to receive the specification signal that each emission port launches;
Power determination subelement, for obtaining for power each burst that subelement obtains, respectively signal received power corresponding to each emission port in this burst confirmed as to each emission port in the signal received power of sampled point corresponding to this burst.
The transmitting power adjusting device that the embodiment of the present invention three proposes can arrange separately, also can be arranged in base station equipment.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (19)

1. a transmission power adjustment method, is characterized in that, comprising:
Signal received power corresponding to specification signal that each emission port of the base station equipment that acquisition connects with indoor distributed system is launched;
The signal received power corresponding to specification signal of launching according to each emission port, in each emission port of described base station equipment, determine benchmark emission port, and other each emission ports except described benchmark emission port are defined as to emission port to be adjusted;
For each emission port to be adjusted, respectively according to the signal received power corresponding to specification signal of this emission port to be adjusted and the transmitting of described benchmark emission port, determine the transmitting power offset between this emission port to be adjusted and described benchmark emission port, and according to this transmitting power offset of determining, the transmitting power of this emission port to be adjusted is adjusted.
2. the method for claim 1, is characterized in that, signal received power corresponding to specification signal that emission port is launched comprises specification signal that emission port launches in the signal received power of each sampled point.
3. method as claimed in claim 2, is characterized in that, the signal received power that the described specification signal of launching according to each emission port is corresponding is determined benchmark emission port in each emission port of described base station equipment, specifically comprises:
For each emission port of described base station equipment, calculate respectively specification signal that this emission port launches in the desired value of the signal received power of each sampled point;
The emission port of the desired value maximum calculating is confirmed as to benchmark emission port.
4. method as claimed in claim 3, is characterized in that, this transmitting power offset that described basis is determined, adjusts the transmitting power of this emission port to be adjusted, specifically comprises:
According to the transmitting power offset between this emission port to be adjusted and described benchmark emission port, increase the transmitting power of this emission port to be adjusted.
5. method as claimed in claim 2, it is characterized in that, describedly according to the signal received power corresponding to specification signal of this emission port to be adjusted and described benchmark emission port transmitting, determine the transmitting power offset between this emission port to be adjusted and described benchmark emission port, specifically comprise:
For each sampled point, the specification signal of launching according to described benchmark emission port is respectively in the signal received power of this sampled point, determine the power back-off factor of this sampled point, and the specification signal of launching according to the power back-off factor of this sampled point, this emission port to be adjusted and described benchmark emission port is in the signal received power of this sampled point, determines that this emission port to be adjusted and described benchmark emission port are in the power difference of this sampled point;
According to determine, this emission port to be adjusted and described benchmark emission port be in the power difference of each sampled point, determines the transmitting power offset between this emission port to be adjusted and described benchmark emission port.
6. method as claimed in claim 5, is characterized in that, the described specification signal of launching according to described benchmark emission port, in the signal received power of this sampled point, is determined the power back-off factor of this sampled point, specifically comprises:
In each default signal received power scope, determine specification signal that described benchmark emission port the launches signal received power scope under the signal received power of this sampled point;
In default signal received power scope and the corresponding relation between the power back-off factor, search the corresponding power back-off factor of signal received power scope of determining;
The power back-off factor finding is confirmed as to the power back-off factor of this sampled point.
7. method as claimed in claim 5, is characterized in that, by following manner, determines that emission port to be adjusted and described benchmark emission port are in the power difference of sampled point:
Diffw i=α i×（Ps i-Pw i）
Wherein, Diffw ifor emission port w to be adjusted and the benchmark emission port s power difference at sampled point i;
I is i sampled point in n sampled point, i=1, and 2 ... .n;
Ps ithe specification signal of launching for benchmark emission port s is in the signal received power of sampled point i;
Pw ithe specification signal of launching for emission port w to be adjusted is in the signal received power of sampled point i;
α ithe power back-off factor for sampled point i.
8. method as claimed in claim 5, it is characterized in that, that described basis is determined, this emission port to be adjusted and described benchmark emission port, in the power difference of each sampled point, are determined the transmitting power offset between this emission port to be adjusted and described benchmark emission port, specifically comprise:
By determine, this emission port to be adjusted and described benchmark emission port be in the desired value of the power difference of each sampled point, confirms as the transmitting power offset between this emission port to be adjusted and described benchmark emission port.
9. method as claimed in claim 2, is characterized in that, signal received power corresponding to specification signal that each emission port of the base station equipment that described acquisition connects with indoor distributed system is launched, specifically comprises:
The burst that each terminal periodic that the base station equipment that acquisition is connected with indoor distributed system is served reports, wherein, the respectively corresponding sampled point of each burst obtaining, and each burst comprises the signal received power that reports the terminal of this burst to receive the specification signal that each emission port launches;
For each burst obtaining, respectively signal received power corresponding to each emission port in this burst confirmed as to each emission port in the signal received power of sampled point corresponding to this burst.
10. the method as described in arbitrary claim in claim 1 ~ 9, is characterized in that, described specification signal is designated reference signal or specifies down channel.
11. methods as claimed in claim 10, is characterized in that, described designated reference signal is cell special reference CRS.
12. 1 kinds of transmitting power adjusting devices, is characterized in that, comprising:
Power obtains unit, the signal received power corresponding to specification signal of launching for obtaining each emission port of the base station equipment connecting with indoor distributed system;
Port determining unit, for the signal received power corresponding to specification signal of launching according to each emission port, in each emission port of described base station equipment, determine benchmark emission port, and other each emission ports except described benchmark emission port are defined as to emission port to be adjusted;
Power compensating value determining unit, be used for for each emission port to be adjusted, according to the signal received power corresponding to specification signal of this emission port to be adjusted and the transmitting of described benchmark emission port, determine the transmitting power offset between this emission port to be adjusted and described benchmark emission port respectively;
Power adjustment unit, be used for for each emission port to be adjusted, transmitting power offset that determine according to power compensating value determining unit respectively, between this emission port to be adjusted and described benchmark emission port, adjusts the transmitting power of this emission port to be adjusted.
13. devices as claimed in claim 12, is characterized in that, power obtains signal received power corresponding to specification signal that emission port that unit obtains launches and comprises specification signal that emission port launches in the signal received power of each sampled point.
14. devices as claimed in claim 13, is characterized in that, described port determining unit specifically comprises:
Desired value computation subunit, for each emission port for described base station equipment, calculates respectively specification signal that this emission port launches in the desired value of the signal received power of each sampled point;
Port is determined subelement, for the emission port of desired value maximum that desired value computation subunit is calculated, confirms as benchmark emission port.
15. devices as claimed in claim 14, it is characterized in that, described power adjustment unit, specifically for for each emission port to be adjusted, transmitting power offset that determine according to power compensating value determining unit respectively, between this emission port to be adjusted and described benchmark emission port, increases the transmitting power of this emission port to be adjusted.
16. devices as claimed in claim 13, is characterized in that, described power compensating value determining unit specifically comprises:
The power back-off factor is determined subelement, and for for each sampled point, the specification signal of launching according to described benchmark emission port respectively, in the signal received power of this sampled point, is determined the power back-off factor of this sampled point;
Power difference is determined subelement, be used for for each emission port to be adjusted and each sampled point, the specification signal of launching according to the power back-off factor of this sampled point, this emission port to be adjusted and described benchmark emission port respectively, in the signal received power of this sampled point, determines that this emission port to be adjusted and described benchmark emission port are in the power difference of this sampled point;
Power compensating value is determined subelement, be used for for each emission port to be adjusted, according to power difference, determine that subelement is determined, this emission port to be adjusted and described benchmark emission port, in the power difference of each sampled point, determine the transmitting power offset between this emission port to be adjusted and described benchmark emission port respectively.
17. devices as claimed in claim 16, it is characterized in that, the described power back-off factor is determined subelement, specifically for for each sampled point, respectively in each default signal received power scope, determine specification signal that described benchmark emission port the launches signal received power scope under the signal received power of this sampled point, in default signal received power scope and the corresponding relation between the power back-off factor, search the corresponding power back-off factor of signal received power scope of determining, the power back-off factor finding is confirmed as to the power back-off factor of this sampled point.
18. devices as claimed in claim 16, it is characterized in that, described power compensating value is determined subelement, specifically for for each emission port to be adjusted, respectively power difference is determined to that subelement is determined, this emission port to be adjusted and described benchmark emission port, in the desired value of the power difference of each sampled point, confirm as the transmitting power offset between this emission port to be adjusted and described benchmark emission port.
19. devices as claimed in claim 13, is characterized in that, described power obtains unit and specifically comprises:
Power obtains subelement, the burst reporting for obtaining each terminal periodic that the base station equipment that is connected with indoor distributed system serves, wherein, the respectively corresponding sampled point of each burst obtaining, and each burst comprises the signal received power that reports the terminal of this burst to receive the specification signal that each emission port launches;
Power determination subelement, for obtaining for power each burst that subelement obtains, respectively signal received power corresponding to each emission port in this burst confirmed as to each emission port in the signal received power of sampled point corresponding to this burst.
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