CN102111768B - Multi-frequency band common networking method and device - Google Patents
Multi-frequency band common networking method and device Download PDFInfo
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- CN102111768B CN102111768B CN200910265876.8A CN200910265876A CN102111768B CN 102111768 B CN102111768 B CN 102111768B CN 200910265876 A CN200910265876 A CN 200910265876A CN 102111768 B CN102111768 B CN 102111768B
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Abstract
The invention discloses a multiple-frequency band common networking method and device. The method comprises: separating out multi-path output power by a large power radio remote unit (RRU), namely a radio processing unit, and coupling the multi-path output power separated out by the large power RRU with the output power of multiple small power RRUs at an antenna port; and respectively determining the factual output power of the large power RRU and the factual output power of the multiple small power RRUs by a baseband unit (BBU), so that in the power output process, the factual output power of the large power RRU and the factual output power of the multiple small power RRUs are respectively subjected to line loss and power attenuation, and then the same expectation output power is output at the antenna port. According to the invention, the networking problem of the same cell co-covering of the RRUs with different power capabilities at frequency bands A and B in a time division-synchronous code division multiple access (TD-SCDMA) is simply and effectively solved, and the expansibility is good.
Description
Technical field
The present invention relates to database technical field, relate in particular to a kind of method and device of multi-frequency band common networking.
Background technology
At present, the framework of TD-SCDMA wireless system Node-B generally adopts baseband processing unit BBU (BaseBand Unit) and the separated mode of RF processing unit RRU (Remote Radio Unit).
In 3G agreement, 1880～1920MHz is called A frequency range, and 2010～2025MHz is called B frequency range.That the initial networking of TD-SCDMA adopts is all B frequency range RRU.Along with the development of TD-SCDMA business, original B resource of frequency range has been not enough to satisfy the demands, and each system equipment manufacturer of TD-SCDMA progressively develops A frequency range RRU.How rationally to introduce A frequency range RRU in existing B frequency range network, become the extremely urgent problem of each system equipment manufacturer of TD-SCDMA.
Existing a lot of TD-SCDMA mobile phone is only supported B frequency range, so each TD-SCDMA system equipment manufacturer has proposed the networking plan that A/B frequency range covers altogether with community.But, being limited to technical merit at that time, the B frequency range RRU power capability in existing network is all smaller, and along with the development of technology, now the A frequency range RRU power capability of exploitation is all larger, several times of the normally old RRU power capability of the power capability of RRU newly developed.Zhe Jiugei system equipment manufacturer has proposed challenge, how the RRU of different frequency range different capacity ability is formed to one with the community covering.
Present solution is the networking mode that adopts Fig. 1, an A frequency range RRU and a B frequency range RRU form a same coverage cell, high-power RRU adopts the power capability identical with small-power RRU, although networking has realized the RRU of different frequency range different capacity ability has been formed to one with the community covering like this, but the power capability of having sacrificed high-power RRU, causes waste.
Summary of the invention
In view of above-mentioned analysis, the present invention aims to provide a kind of method and device of multi-frequency band common networking, the problem of high-power RRU power capability waste when solving the different frequency range networking existing in prior art.
Object of the present invention is mainly achieved through the following technical solutions:
A kind of method that the invention provides multi-frequency band common networking, comprising:
Steps A: high-power RRU is that RF processing unit is isolated multichannel power output, is coupled with the power output of a plurality of small-power RRU the isolated multichannel power output of high-power RRU respectively in antenna opening;
Step B:BBU is that baseband processing unit is determined respectively the real output of high-power RRU and the real output of a plurality of small-power RRU, make in power stage process, the real output of described high-power RRU and the real output of a plurality of small-power RRU are exported identical desired output power in antenna opening respectively after path loss and power attenuation.
Further, described steps A specifically comprises:
According to the power capability of high-power RRU and small-power RRU, determine the quantity of high-power RRU and the quantity of small-power RRU of same community;
According to the quantity of small-power RRU, in high-power RRU passway, isolate corresponding multichannel power output;
At antenna opening place, will be coupled on antenna with the power output of a plurality of small-power RRU respectively in the isolated multichannel power output of high-power RRU.
Further, described step B specifically comprises:
BBU arranges power attenuation value to high-power RRU and a plurality of small-power RRU respectively;
According to following formula, calculate the real output PB_ch of small-power RRU and the real output PA_ch of high-power RRU, make in power stage process, the real output PA_ch of described high-power RRU and the real output PB_ch of a plurality of small-power RRU export identical desired output power in antenna opening respectively after path loss and power attenuation:
PB_ch＝Pch+PB_loss-PB_Antten，
PA_ch=Pch+PA_loss-PA_Antten, wherein, Pch is for expecting that power output, PB_loss are the path loss offset of small-power RRU, path loss offset, power attenuation value, the PA_Antten power attenuation value for to high-power RRU arrange of PB_Antten for arranging to small-power RRU that PA_loss is high-power RRU.
Further, described step B also comprises:
When receiving the correlation measure of the high-power RRU that high-power RRU reports, BBU deducts the correlation measure of high-power RRU and reports RNC after the path loss offset of high-power RRU is again radio network controller; When receiving the correlation measure of the small-power RRU that small-power RRU reports, report again RNC after the correlation measure of small-power RRU being deducted to the path loss offset of small-power RRU.
Wherein, described correlation measure at least comprises one or more in following measured value:
Code territory transmitting power, reception total bandwidth power, Interference Signal Code Power.
The present invention also provides a kind of device of multi-frequency band common networking, comprising: merit combiner unit and power calculation unit, wherein,
Described merit combiner unit, for being that RF processing unit is isolated multichannel power output by high-power RRU, and is coupled with the power output of a plurality of small-power RRU the isolated multichannel power output of high-power RRU respectively in antenna opening;
Described power calculation unit, for determining respectively the real output of high-power RRU and the real output of a plurality of small-power RRU, make power in output procedure, the real output of described high-power RRU and the real output of a plurality of small-power RRU are exported identical desired output power in antenna opening respectively after path loss and power attenuation.
Further, described merit combiner unit specifically for,
According to the power capability of high-power RRU and small-power RRU, determine the quantity of high-power RRU and the quantity of small-power RRU of same community; And in high-power RRU passway, isolate corresponding multichannel power output according to the quantity of small-power RRU, at antenna opening place, the isolated multichannel power output of high-power RRU is coupled on antenna with the power output of a plurality of small-power RRU respectively.
Further, described power calculation unit specifically for, respectively high-power RRU and a plurality of small-power RRU are arranged to power attenuation value, and calculate the real output PB_ch of small-power RRU and the real output PA_ch of high-power RRU according to following formula, make in power stage process, the real output PA_ch of described high-power RRU and the real output PB_ch of a plurality of small-power RRU export identical desired output power in antenna opening respectively after path loss and power attenuation:
PB_ch＝Pch+PB_loss-PB_Antten，
PA_ch=Pch+PA_loss-PA_Antten, wherein, Pch is for expecting that power output, PB_loss are the path loss offset of small-power RRU, path loss offset, power attenuation value, the PA_Antten power attenuation value for to high-power RRU arrange of PB_Antten for arranging to small-power RRU that PA_loss is high-power RRU.
Further, described power calculation unit also for, when receiving the correlation measure of the high-power RRU that high-power RRU reports, the correlation measure of high-power RRU being deducted and report RNC after the path loss offset of high-power RRU is again radio network controller; When receiving small-power RRU by the correlation measure of the small-power RRU reporting, report RNC after the correlation measure of small-power RRU being deducted to the path loss offset of small-power RRU.
Wherein, described correlation measure at least comprises one or more in following measured value:
Code territory transmitting power, reception total bandwidth power, Interference Signal Code Power.
Beneficial effect of the present invention is as follows:
The present invention has solved the networking problem that A in TD-SCDMA system, B frequency range different capacity ability RRUTong community cover altogether simply and effectively, and has good autgmentability.
Other features and advantages of the present invention will be set forth in the following description, and, the becoming apparent from specification of part, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in the specification write, claims and accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of A/B frequency range common networking in prior art;
Fig. 2 is the schematic flow sheet of method described in the embodiment of the present invention;
Fig. 3 is described in the embodiment of the present invention in method, and an A frequency range RRU and 2 B frequency range RRU form the networking schematic diagrames that Yi Ge community covers altogether;
Fig. 4 is the structural representation installing described in the embodiment of the present invention.
Embodiment
The object of the invention is to be to provide a kind of method and device of multi-frequency band common networking, to improve the power capability utilance of high-power RRU, reduce networking cost.
Below in conjunction with accompanying drawing, specifically describe the preferred embodiments of the present invention, wherein, accompanying drawing forms the application's part, and together with embodiments of the present invention for explaining principle of the present invention.For purpose of clarity and simplification, when it may make theme of the present invention smudgy, by illustrating in detail of known function and structure in omission device described herein.
The main contents of the embodiment of the present invention comprise: high-power RRU is that RF processing unit is isolated multichannel power output, and the isolated multichannel power output of high-power RRU is coupled in antenna opening with the power output of a plurality of small-power RRU respectively; BBU determines respectively the real output of high-power RRU and the real output of a plurality of small-power RRU, make in power stage process, the real output of described high-power RRU and the real output of a plurality of small-power RRU are exported identical desired output power in antenna opening respectively after path loss and power attenuation.
First by reference to the accompanying drawings 2 and 3 pairs of embodiment of the present invention of accompanying drawing described in method be elaborated.
Step 201: A frequency range RRU number and the B frequency range RRU number of determining same community according to the power capability of high-power RRU and small-power RRU; For example, if A frequency range RRU power capability is 20W, B frequency range RRU power capability is 10W, just needs so 1 A frequency range RRU and 2 B frequency range RRU during networking; Again for example, if A frequency range RRU power capability is 50W, B frequency range RRU power capability is 15W, just needs so 1 A frequency range RRU and 3 B frequency range RRU during networking; Owing to being all generally that A frequency range RRU power capability is greater than B frequency range RRU power capability, during networking, A frequency range RRU and B frequency range RRU are exactly the relation of one-to-many; Certainly may be also B frequency range RRU power capability while being greater than A frequency range RRU power capability, so will a B frequency range RRU during networking and a plurality of A frequency range RRU; As shown in Figure 2, Fig. 2 is that an A frequency range RRU and 2 B frequency range RRU form the networking schematic diagrames that Yi Ge community covers altogether, in the following embodiment of the present invention, by take the networking structure shown in Fig. 2, describes as example.
Step 202:A frequency range RRU isolates 2 tunnel power outputs, and the power output of respectively with 2 B frequency range RRU of the isolated 2 tunnel power output of A frequency range RRU is coupled in antenna opening;
In specific implementation, be exactly, in A frequency range RRU passway, use power splitter to isolate two-way cable, then at antenna opening place, use mixer that A frequency range RRU cable and two-way B frequency range RRU cable are coupled to respectively on antenna; Example as shown in Figure 2, in A frequency range RRU passway, use 2 minutes power splitter, then connection cable, is used mixer that A frequency range RRU cable and two-way B frequency range RRU cable are closed respectively to road to antenna at antenna opening place, has like this A frequency band signals to have again B frequency band signals on antenna.
Step 203:BBU calculates the real output of A frequency range and B frequency range RRU respectively, make in power stage process, the real output of the real output of A frequency range RRU and B frequency range RRU is consistent through path loss power output in antenna opening after power attenuation, be all desired output power, therefore reach with the object covering;
Be exactly specifically, BBU respectively arranges a power attenuation value to A frequency range RRU and B frequency range RRU, then according to following formula, calculates the real output of B frequency range RRU and the real output of A frequency range RRU:
The real output PB_ch of the B frequency range RRU that BBU calculates is:
PB_ch=Pch+PB_loss-PB_Antten, wherein, power, the PB_loss that Pch is planning is that path loss offset, the PB_Antten of B frequency range RRU is that BBU is to each power attenuation value arranging of B frequency range RRU;
The real output PA_ch of the A frequency range RRU that BBU calculates is:
PA_ch=Pch+PA_loss-PA_Antten, wherein, power, the PA_loss that Pch is planning is that path loss offset, the PA_Antten of A frequency range RRU is that BBU is to each power attenuation value arranging of A frequency range RRU.
Like this, just can realize in power stage process, the power output PB_ch of the real output PA_ch of A frequency range RRU and B frequency range RRU respectively after path loss and power attenuation, reaches unanimously at the desired output power of antenna opening, and desired output power is Pch.
For the ease of understanding above-mentioned formula, below will be to the parameters above-mentioned explanation that makes an explanation.
BBU is power splitter, cable and mixer, regard a part of RRU as, the power loss that power splitter, cable and mixer bring is called path loss offset, and the path loss offset of therefore setting A frequency range RRU is PA_loss, and the path loss offset of B frequency range RRU is PB_loss.
Because the size of PA_loss and PB_loss is determined by physical device power splitter, cable and mixer, these two values are not easy to adjust, and because the power capability of high-power RRU and the power capability of small-power RRU might not become integral multiple sometimes, in order to reach consistent in the power output of antenna opening, just need BBU, to A frequency range RRU and B frequency range RRU, a power attenuation value is respectively set, be designated as respectively PA_Antten and PB_Antten; By adjusting this two pad values, reach each RRU consistent in the power output of antenna opening; For example, if A frequency range RRU power capability is 50W, B frequency range RRU power capability is 15W, and networking comprises 1 A frequency range RRU and 3 B frequency range RRU, so A frequency range RRU more than 5W power just need to attenuate, consistent in the power output of antenna opening with B frequency range RRU to reach A frequency range RRU.
Desired output power is determined by the little RRU of power capability, this is because the wireless parameter (power of cell power, various channels) of original RNC plans it is to plan by RRU ability, and because the power capability of A frequency range RRU and B frequency range RRU is different, if be respectively each RRU, plan a set of wireless parameter, so to network planning network optimization by being a complicated job, to existing protocol, be again very large impact.Therefore, we select the RRU that power capability is little to plan a set of wireless parameter, and the wireless parameter of the RRU that power capability is large is calculated by BBU inside.It should be noted that, desired output power in the embodiment of the present invention is a larger scope, comprising a plurality of quantity of power such as power of cell power and various channels, when utilizing above-mentioned formula to calculate real output, be actually and need to repeatedly utilize above-mentioned formula respectively a plurality of quantity of power such as the power of cell power and various channels to be calculated.
Step 204: after the above-mentioned processing of process, when A frequency range RRU is by the TCP of its measurement (TransmittedCode Power, code territory transmitting power), RTWP (Received Total Wide band Power, receive total bandwidth power) and ISCP (Interference Signal Code Power) measured value while reporting BBU, TCP, the RTWP that BBU just need to measure A frequency range RRU and ISCP measured value report RNC (Radio Network Controller, radio network controller) after deducting PA_loss again; After deducting PA_loss, TCP, the RTWP that same BBU also measures A frequency range RRU and ISCP measured value report again RNC; This is because power splitter, cable and mixer have brought power loss (being path loss offset), therefore NodeB reports (mainly comprising RRU and BBU) RNC TCP, RTWP and ISCP measured value no longer refer to the measured value in antenna opening, but deduct the value after path loss offset, when RNC calculates the expectation power of up-admission like this, it is exactly current UE power demand.
Next device is elaborated described in 4 pairs of embodiment of the present invention by reference to the accompanying drawings.
As shown in Figure 4, Fig. 4 is the structural representation installing described in the embodiment of the present invention, specifically can comprise: merit combiner unit and power calculation unit, wherein,
Merit combiner unit, is that RF processing unit is isolated multichannel power output by high-power RRU, and the isolated multichannel power output of high-power RRU is coupled in antenna opening with the power output of a plurality of small-power RRU respectively;
In specific implementation, be exactly that the quantity of high-power RRU and the quantity of small-power RRU of same community is determined in merit combiner unit according to the power capability of high-power RRU and small-power RRU; And in high-power RRU passway, by power splitter, isolate corresponding multichannel cable according to the quantity of small-power RRU, at antenna opening place, the isolated multichannel cable of high-power RRU is coupled on antenna by mixer with the cable of small-power RRU respectively.
Power calculation unit, be arranged in BBU, respectively the real output of high-power RRU and small-power RRU is calculated, make in power stage process, the real output of high-power RRU and the real output of a plurality of small-power RRU are exported identical desired output power in antenna opening respectively after path loss and power attenuation.
Be exactly specifically, due to certain power loss that power splitter, cable and mixer can bring, the path loss offset of setting A frequency range RRU is PA_loss, and the path loss offset of B frequency range RRU is PB_loss; Also the size due to PA_loss and PB_loss is determined by physical device power splitter, cable and mixer, these two values are not easy to adjust, and because the power capability of high-power RRU and the power capability of small-power RRU might not become integral multiple sometimes, in order to reach consistent in the power output of antenna opening, with regard to required power computing unit, A frequency range RRU and B frequency range RRU are respectively arranged to a power attenuation value, be designated as respectively PA_Antten and PB_Antten; Therefore power calculation unit needs respectively high-power RRU and small-power RRU to be arranged to power attenuation value, and calculates the real output PB_ch of small-power RRU and the real output PA_ch of high-power RRU according to following formula:
PB_ch＝Pch+PB_loss-PB_Antten，
PA_ch=Pch+PA_loss-PA_Antten, wherein, Pch is for expecting that power output, PB_loss are the path loss offset of small-power RRU, path loss offset, power attenuation value, the PA_Antten power attenuation value for to high-power RRU arrange of PB_Antten for arranging to small-power RRU that PA_loss is high-power RRU;
Like this, just can realize in power stage process, the power output PB_ch of the real output PA_ch of A frequency range RRU and B frequency range RRU respectively after path loss and power attenuation, reaches unanimously at the desired output power of antenna opening, and desired output power is Pch.
When receiving TCP, the RTWP of the high-power RRU that high-power RRU reports and ISCP measured value, power calculation unit reports RNC after the TCP of high-power RRU, RTWP and ISCP measured value being deducted to the path loss offset of high-power RRU again; When receiving small-power RRU by the TCP of the small-power RRU reporting, RTWP and ISCP measured value, report RNC after the TCP of small-power RRU, RTWP and ISCP measured value being deducted to the path loss offset of small-power RRU.
For the specific implementation process of installing described in the embodiment of the present invention, owing to describing in detail in said method, so locate to repeat no more.
In sum, the embodiment of the present invention provides a kind of method and device of multi-frequency band common networking, has solved simply and effectively the networking problem that A in TD-SCDMA system, B frequency range different capacity ability RRUTong community cover altogether, and has had good autgmentability; Can avoid the complicated power configuration with the different RNC that bring of B frequency range RRU power capability due to A frequency range RRU, alleviate greatly the workload of network planning network optimization.
It should be noted that, the embodiment of the present invention is not only applicable to TD-SCDMA system, and those of ordinary skills can also apply it in other wireless system in multi-frequency band common networking by simple extension.
The above; be only the present invention's embodiment preferably, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (8)
1. a method for multi-frequency band common networking, is characterized in that, comprising:
Steps A: high-power RF processing unit RRU isolates multichannel power output, is coupled with the power output of a plurality of small-power RRU the isolated multichannel power output of high-power RRU respectively in antenna opening;
Step B: baseband processing unit BBU arranges power attenuation value to high-power RRU and a plurality of small-power RRU respectively;
According to following formula, calculate the real output PB_ch of small-power RRU and the real output PA_ch of high-power RRU, make in power stage process, the real output PA_ch of described high-power RRU and the real output PB_ch of a plurality of small-power RRU export identical desired output power in antenna opening respectively after path loss and power attenuation:
PB_ch=Pch+PB_loss－PB_Antten，
PA_ch=Pch+PA_loss-PA_Antten, wherein, Pch is for expecting that power output, PB_loss are the path loss offset of small-power RRU, path loss offset, power attenuation value, the PA_Antten power attenuation value for to high-power RRU arrange of PB_Antten for arranging to small-power RRU that PA_loss is high-power RRU.
2. method according to claim 1, is characterized in that, described steps A specifically comprises:
According to the power capability of high-power RRU and small-power RRU, determine the quantity of high-power RRU and the quantity of small-power RRU of same community;
According to the quantity of small-power RRU, in high-power RRU passway, isolate corresponding multichannel power output;
At antenna opening place, will be coupled on antenna with the power output of a plurality of small-power RRU respectively in the isolated multichannel power output of high-power RRU.
3. method according to claim 1, is characterized in that, described step B also comprises:
When receiving the correlation measure of the high-power RRU that high-power RRU reports, BBU deducts the correlation measure of high-power RRU and reports RNC after the path loss offset of high-power RRU is again radio network controller; When receiving the correlation measure of the small-power RRU that small-power RRU reports, report again RNC after the correlation measure of small-power RRU being deducted to the path loss offset of small-power RRU.
4. method according to claim 3, is characterized in that, described correlation measure at least comprises one or more in following measured value:
Code territory transmitting power, reception total bandwidth power, Interference Signal Code Power.
5. a device for multi-frequency band common networking, is characterized in that, comprising: merit combiner unit and power calculation unit, wherein,
Described merit combiner unit, for high-power RF processing unit RRU is isolated to multichannel power output, and is coupled with the power output of a plurality of small-power RRU the isolated multichannel power output of high-power RRU respectively in antenna opening;
Described power calculation unit, for respectively high-power RRU and a plurality of small-power RRU being arranged to power attenuation value, and calculate the real output PB_ch of small-power RRU and the real output PA_ch of high-power RRU according to following formula, make in power stage process, the real output PA_ch of described high-power RRU and the real output PB_ch of a plurality of small-power RRU export identical desired output power in antenna opening respectively after path loss and power attenuation:
PB_ch=Pch+PB_loss－PB_Antten，
PA_ch=Pch+PA_loss-PA_Antten, wherein, Pch is for expecting that power output, PB_loss are the path loss offset of small-power RRU, path loss offset, power attenuation value, the PA_Antten power attenuation value for to high-power RRU arrange of PB_Antten for arranging to small-power RRU that PA_loss is high-power RRU.
6. device according to claim 5, is characterized in that, described merit combiner unit specifically for, according to the power capability of high-power RRU and small-power RRU, determine the quantity of high-power RRU and the quantity of small-power RRU of same community; And in high-power RRU passway, isolate corresponding multichannel power output according to the quantity of small-power RRU, at antenna opening place, the isolated multichannel power output of high-power RRU is coupled on antenna with the power output of a plurality of small-power RRU respectively.
7. device according to claim 6, it is characterized in that, described power calculation unit also for, when receiving the correlation measure of the high-power RRU that high-power RRU reports, the correlation measure of high-power RRU being deducted and report RNC after the path loss offset of high-power RRU is again radio network controller; When receiving small-power RRU by the correlation measure of the small-power RRU reporting, report RNC after the correlation measure of small-power RRU being deducted to the path loss offset of small-power RRU.
8. device according to claim 7, is characterized in that, described correlation measure at least comprises one or more in following measured value:
Code territory transmitting power, reception total bandwidth power, Interference Signal Code Power.
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| CN103326771B (en) * | 2012-03-23 | 2016-04-06 | 京信通信***（中国）有限公司 | RRU optical fiber link management method, device and remote radio unit system |
| CN104270775A (en) * | 2014-10-21 | 2015-01-07 | 中国科学技术大学 | Method for movable signal partition coverage |
| WO2017201688A1 (en) * | 2016-05-25 | 2017-11-30 | 华为技术有限公司 | Method for setting channel transmission power of remote radio unit, and base station |
| CN111327362B (en) * | 2018-12-13 | 2021-06-22 | 大唐移动通信设备有限公司 | Optical path compensation system, method and base station |
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| CN101145814A (en) * | 2006-11-21 | 2008-03-19 | 中兴通讯股份有限公司 | Power computing and over-load control method for multi-carrier RF system |
| CN101242664A (en) * | 2007-12-27 | 2008-08-13 | 华为技术有限公司 | A realization method and device for multi-carrier wave power share |
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