CN102333369A - Method and system for controlling data scheduling - Google Patents
Method and system for controlling data scheduling Download PDFInfo
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- CN102333369A CN102333369A CN201110318027A CN201110318027A CN102333369A CN 102333369 A CN102333369 A CN 102333369A CN 201110318027 A CN201110318027 A CN 201110318027A CN 201110318027 A CN201110318027 A CN 201110318027A CN 102333369 A CN102333369 A CN 102333369A
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Abstract
The invention discloses a method and a system for controlling data scheduling, wherein the method for controlling the data scheduling is used for scheduling data from a terminal in a frame manner, and the terminal is arranged at the edge of a local area and an adjacent area thereof, the method comprises the following steps of: determining data to be sent; calculating the total transmission power of multiplexing frequency of the local area and the adjacent area; and controlling the debugging of data to be sent in a frame manner on the basis of the total transmission power and the maximum transmission power of a preset multiplexing frequency.
Description
Technical field
The present invention relates to the data transmission technology in the communications field, relate in particular to a kind of method and system that scheduling is controlled to data.
Background technology
Along with the fast development of telecommunications, the frequency resource ever more important that seemed still is that the individual is like this for country, enterprise.
Yet well-known, frequency resource is a kind of non-renewable rare and expensive resource, can not satisfy the demand that people rise day by day.Therefore, for any technology and the network planning, frequency resource can not be unending being used, and just because of this, in the process of development of new techniques, needs research how more effectively to utilize frequency resource.
In the prior art, effectively utilize frequency resource through networking technology, said networking technology specifically comprises: channeling is technological, partial frequency multiplexing is technological, soft-frequency reuse is technological.
The channeling technology is a kind of networking technology that proposes in order to improve the availability of frequency spectrum and expanding system capacity.Traditional channeling technology can be divided into alien frequencies multiplex technique and same multiplex technique frequently.Can accomplish that with the frequency multiplex technique frequency duplex factor as one is 1, i.e. the identical frequency band of the use of sub-district in the whole system coverage is the user's service in this sub-district.Yet because identical frequency band is used in all sub-districts, the same frequency that edge customer can receive from other neighbor cells disturbs, and communication quality is had a strong impact on.The alien frequencies multiplex technique is formed a multiplexing cluster with the sub-district of several use different frequency bands in the system, and the frequency band that takies in this multiplexing cluster is all frequency bands that system allows use.Whole system then is made up of so one by one multiplexing cluster.
The partial frequency multiplexing technology is a kind of a kind of networking technology that improves power system capacity.The user of center of housing estate, channel condition is better, and because physical location is separated by distantly, and itself is also little to the interference of other sub-districts, is on 1 the reuse set so be distributed in frequency duplex factor as one; Cell Edge User, because distant from base station distance, channel condition is poor, and is bigger with the interference ratio between the user of other sub-districts, is on 3 the reuse set so be distributed in frequency duplex factor as one.
The soft-frequency reuse technology is developed by the legacy frequencies multiplex technique; In the middle of the soft-frequency reuse technology, frequency in the middle of a sub-district, no longer be defined as with or need not, to what extent be used but define this frequency with the mode of transmitting power thresholding; The multiplexing factor of the equivalent frequency of system can seamlessly transit between 1 to N; Compare with the fractional reuse frequency technique, soft-frequency reuse does not mechanically isolate into two parts with frequency spectrum, but has stipulated its usage degree with power threshold; Therefore no matter still inner in the sub-district at cell edge, can obtain bigger bandwidth and spectrum efficiency.
In the process of technical scheme, the application inventor finds to exist at least in the prior art following technical problem in realizing the application embodiment:
Development along with the identical networking technology; Power also becomes a kind of resource; Yet; The distribution method of existing frequency spectrum resource is not considered power is dispatched as a kind of resource, so that uncontrollable same frequency to other sub-districts disturbs, makes that the terminal does not obtain required bandwidth resources to greatest extent in the interference-limited environment under identical networking.
Summary of the invention
The present invention provides a kind of method and system that data scheduling is controlled, and is used for solving prior art and exists terminal in the interference-limited environment under the identical networking can not obtain the technical problem of required bandwidth resources to greatest extent.
On the one hand, the present invention provides following technical scheme through an embodiment among the application:
A kind of method that scheduling is controlled to data, the data that are used for the self terminal in future are dispatched through the form of Frame, and said terminal is at the edge of the adjacent cell of this sub-district and said this sub-district, and said method comprises:
The definite data that will send;
Calculate total transmitting power of said this sub-district and said adjacent cell channelized frequencies;
Based on the maximum transmission power of a said total transmitting power and a predefined said channelized frequencies, the scheduling of the said data that will send is controlled through the form of frame.
Alternatively, the said definite data that will send are specially:
Upstream data is specially the data that said terminal sends to the base station; Or
Downlink data is specially the data that said base station sends to the terminal.
Alternatively, said frame includes n burst, and wherein n is the integer greater than 1; And each burst is to there being transmitting power; Said each burst has the time slot corresponding number, and total transmitting power of said this sub-district of said calculating and said adjacent cell channelized frequencies specifically comprises:
Multiply by said burst time slot corresponding number through transmitting power, obtain the gross power of each burst each burst;
Through gross power summation, obtain total transmitting power of said frame with each burst of said frame.
Alternatively, the maximum power of a said predefined said channelized frequencies is through according to the network planning and the adjacent tolerable interference in station, sets the maximum transmission power of n channelized frequencies, and wherein, n is the integer more than or equal to 1; The maximum transmission power of a said n channelized frequencies and the lowest transmit power at said terminal are compared, obtain from the maximum transmission power of a said n channelized frequencies, to confirm said this sub-district and the corresponding maximum transmission power of said adjacent cell channelized frequencies.
Alternatively, said maximum transmission power based on a said total transmitting power and a predefined said channelized frequencies is controlled the scheduling of the said data that will send through the form of frame, specifically comprises:
The maximum transmission power of said total transmitting power and said predefined said channelized frequencies is compared;
When said total transmitting power during, then stop scheduling greater than the maximum transmission power of said predefined said channelized frequencies;
Or said total transmission power level adjusted within the said maximum transmission power scope.
Alternatively, said maximum transmission power based on a said total transmitting power and a predefined said channelized frequencies is controlled the scheduling of the said data that will send through the form of frame, specifically comprises:
The maximum transmission power of said total transmitting power and said predefined said channelized frequencies is compared;
When said total transmitting power is less than or equal to the maximum transmission power of said predefined said channelized frequencies, then dispatch.
On the other hand, the present invention provides following technical scheme through another embodiment among the application:
A kind of system that scheduling is controlled to data, the data that are used for the self terminal in future are dispatched through the form of frame, and said terminal is at the edge of the adjacent cell of this sub-district and said this sub-district, and said system comprises:
Confirm the unit, be used for the definite data that will send;
Computing unit is used to calculate total transmitting power of said this sub-district and said adjacent cell channelized frequencies;
Scheduling unit is used for the maximum transmission power based on a said total transmitting power and a predefined said channelized frequencies, through the form of frame the said data that will send is dispatched.
Alternatively, said definite unit comprises:
First confirms the unit, is used for definite said upstream data that will send;
Second confirms the unit, is used for definite said downlink data that will send.
Alternatively, said computing unit comprises:
Multiplication unit is used for multiply by said burst time slot corresponding number through the transmitting power with each burst, obtains the gross power of each burst;
Adder unit is used for obtaining total transmitting power of said frame through the gross power summation with said each burst.
Alternatively, said scheduling unit comprises:
First scheduling unit is used for then stopping scheduling, or said total transmission power level being adjusted within the said maximum transmission power scope when said total transmitting power during greater than said maximum transmission power;
Second scheduling unit is used for when said total transmitting power is less than or equal to said maximum transmission power, then dispatching.
One or more technical schemes in the technique scheme have following technique effect or advantage:
Through in the data dispatch process; Adopted the technological means that the gross power of channelized frequencies is dispatched; Make in the process of data, realized that terminal in the interference-limited environment under identical networking can obtain the technique effect of required bandwidth resources to greatest extent by frame scheduling.
Description of drawings
Fig. 1 is for dispatching the method flow diagram of controlling to data in the embodiment of the invention one;
Fig. 2 is for dispatching the system construction drawing of controlling to data in the embodiment of the invention two;
Fig. 3 is that data are pressed the frame scheduling process chart among the embodiment of the invention one or two.
Embodiment
For those skilled in the art under making the application more are expressly understood the present invention,, technical scheme of the present invention is described in detail through specific embodiment below in conjunction with accompanying drawing.
Please refer to Fig. 1, Fig. 3; The method that scheduling is controlled to data among the application embodiment one; The data that are used for the self terminal in future are dispatched through the form of frame, and said terminal is at the edge of the adjacent cell of this sub-district and said this sub-district, and said method comprises the steps:
In the practical implementation process, the said data that will send are specially upstream data or downlink data, and wherein, said upstream data is the data that the terminal sends to the base station, and said downlink data is the data that the base station sends to the terminal.Said terminal is specially, and like mobile phone, has the equipment such as panel computer of mobile communication function.
In the process of the said data of confirming to send, confirm the data that to send according to priority and quality of service requirement.As: a string data to be sent are arranged; Comprise data 1, data 2, data 3, data 4, data 5 etc.; Wherein, The said priority of said data 1 and said data 2 and said service quality all are higher than said data 3, said data 4, said data 5, and then said data 1 are the said data that will send with said data 2.
In the practical implementation process, the said data that will send are sent with the form of frame, and every frame includes n burst; Wherein n is the integer greater than 1, as: 2,3 or 4 etc.; And each burst is to there being transmitting power; Said each burst has the time slot corresponding number, multiply by said burst time slot corresponding number through the transmitting power with each burst, obtains the gross power of each burst; Through gross power summation, obtain total transmitting power of said frame with each burst of said frame.
In the present embodiment; Setting said frame and include 3 bursts, promptly happen suddenly 1, burst 2, burst 3, is example with the upstream data; As: up channelized frequencies available bandwidth is 120; The transmitting power of said burst 1, burst 2, burst 3 is respectively-9 ,-6 ,-3, and said burst 1, burst 2, burst 3 time slot corresponding numbers be respectively 40,60,20, and then said gross power is respectively 40*-9,60*-6,20*-3; Further, the gross power of said uplink frame channelized frequencies is: (40*-9)+(60*-6)+(20*-3)=-780.
Certainly, in concrete implementation procedure, the application person of ordinary skill in the field can also obtain the gross power of downlink frame channelized frequencies according to actual conditions, simultaneously, also can set burst number according to actual needs, at this, has not just enumerated one by one.
In the practical implementation process; The maximum power of a said predefined said channelized frequencies is through the maximum transmission power according to n channelized frequencies of the tolerable interference setting of the network planning and adjacent station; Wherein, n is the integer more than or equal to 1, as: 1,2 or 3 etc.; The maximum transmission power of a said n channelized frequencies and the lowest transmit power at said terminal are compared, obtain from the maximum transmission power of a said n channelized frequencies, to confirm said this sub-district and the corresponding maximum transmission power of said adjacent cell channelized frequencies.As:
Maximum transmission power according to 3 channelized frequencies of the tolerable interference setting of the network planning and adjacent station; Its value is respectively-600 ,-700 ,-800; If the lowest transmit power at said terminal is-650, then said performance number is the maximum power of a said predefined said channelized frequencies for-600 maximum transmission power.
In concrete scheduling process, the maximum transmission power of said total transmitting power and said predefined said channelized frequencies is compared.
One, when said total transmitting power during, then stop scheduling greater than the maximum transmission power of said predefined said channelized frequencies;
Or said total transmission power level adjusted within the said maximum transmission power scope.
As: the maximum power-800 of a said predefined said channelized frequencies and the gross power-780 of said uplink frame channelized frequencies are compared; Significantly ,-800＜-780, promptly; Said predefined said channelized frequencies then stops scheduling less than the gross power of said uplink frame channelized frequencies.Or incite somebody to action-780 and adjust within-800, in other words, change the size of burst; As; With in the said uplink frame said burst 1, burst 2, burst 3 first power reduce to-10 ,-7 ,-4 from original-9 ,-6 ,-3 respectively; The gross power of then said uplink frame channelized frequencies is: (40*-10)+(60*-7)+(20*-4)=-900, at this moment ,-800＞-900; That is, said total transmission power level is within said maximum transmission power scope.
Two, when said total transmitting power is less than or equal to the maximum transmission power of said predefined said channelized frequencies, then dispatch.
As: the maximum power-600 of a said predefined said channelized frequencies and the gross power-780 of said uplink frame channelized frequencies are compared; Significantly ,-600＞-780, promptly; Said predefined said channelized frequencies is then dispatched greater than the gross power of said uplink frame channelized frequencies.In addition, if said channelized frequencies is redefined for-780, also dispatch.
In the practical implementation process, when data are dispatched, upgrade available bandwidth and available launch power, as: the available bandwidth that the data that first frame transmits comprise is 120 time slots, and available launch power is-15, then upgrades said available bandwidth and said transmitting power.After the said renewal, judge whether said data also include available bandwidth, at this moment, two kinds of situation appear in judged result:
First kind, there is not available bandwidth, then finish scheduling;
Second kind, available bandwidth is arranged, then continue scheduling, and judge whether to also have available transmitting power; At this moment, judged result also has two kinds of situation:
First kind, there is not available transmitting power, then finish scheduling;
Second kind, available transmitting power is arranged, then continue scheduling, and judge whether that data need scheduling in addition; At this moment, judged result also has two kinds of situation:
First kind, also have data to need scheduling, then continue the data at terminal are dispatched by the form of frame;
Second kind, there are not data to need scheduling, then finish scheduling.
Please referring to Fig. 2, Fig. 3, the system that scheduling is controlled to data among the embodiment two is used in the future the data of self terminal and dispatches through the form of frame, and said terminal is at the edge of the adjacent cell of this sub-district and said this sub-district, and said system comprises:
Specifically, the said data that will send are specially upstream data or downlink data, and wherein, said upstream data is the data that the terminal sends to the base station, and said downlink data is the data that the base station sends to the terminal.Said terminal is specially, and like mobile phone, has the equipment such as panel computer of mobile communication function.
In the process of the said definite data that will send, require the definite data that will send according to priority and quality of wireless channel.As: a string data to be sent are arranged; Comprise data 1, data 2, data 3, data 4, data 5 etc.; The said priority of said data 1 and said data 2 and said quality of wireless channel all are higher than said data 3, said data 4, said data 5, and then said data 1 are the said data that will send with said data 2.
Further, said definite unit 201 also comprises:
First confirms the unit, is used for definite said upstream data that will send;
Specifically, said upstream data is the data that the terminal sends to the base station.
Second confirms the unit, is used for the definite said downlink data that will launch;
Specifically, said downlink data is the data that send to the terminal base station.
Specifically, the said data that will send are sent with the form of frame, and every frame includes n burst; Wherein n is the integer greater than 1, as: 2,3 or 4 etc.; And each burst is to there being transmitting power; Said each burst has the time slot corresponding number, multiply by said burst time slot corresponding number through the transmitting power with each burst, obtains the gross power of each burst; Through gross power summation, obtain total transmitting power of said frame with each burst of said frame.
Further, said computing unit 202 also comprises:
Multiplication unit is used for multiply by said burst time slot corresponding number through the transmitting power with each burst, obtains the gross power of each burst;
In the present embodiment; Setting said Frame and include 3 bursts, promptly happen suddenly 1, burst 2, burst 3, is example with the upstream data; As: up channelized frequencies available bandwidth is 120; The transmitting power of said burst 1, burst 2, burst 3 is respectively-9 ,-6 ,-3, and said burst 1, burst 2, burst 3 time slot corresponding numbers be respectively 40,60,20, and then said gross power is respectively 40*-9,60*-6,20*-3.
Adder unit is used for obtaining total transmitting power of said frame through the gross power summation with said each burst.
Specifically, with the gross power summation of said each burst, as: the gross power of each burst is respectively 40*-9,60*-6,20*-3 in the uplink data frames, and then total transmitting power of said frame is (40*-9)+(60*-6)+(20*-3)=-780.
Specifically; The maximum power of a said predefined said channelized frequencies is through the maximum transmission power according to n channelized frequencies of the tolerable interference setting of the network planning and adjacent station; Wherein, n is the integer more than or equal to 1, as: 1,2 or 3 etc.; The maximum transmission power of a said n channelized frequencies and the lowest transmit power at said terminal are compared, obtain from the maximum transmission power of a said n channelized frequencies, to confirm said this sub-district and the corresponding maximum transmission power of said adjacent cell channelized frequencies.As:
Maximum transmission power according to 3 channelized frequencies of the tolerable interference setting of the network planning and adjacent station; Its value is respectively-600 ,-700 ,-800; If the lowest transmit power at said terminal is-650, then said performance number is the maximum power of a said predefined said channelized frequencies for-600 maximum transmission power.
Further, said scheduling unit 203 also comprises:
First scheduling unit is used for then stopping scheduling, or said total transmission power level being adjusted within the said maximum transmission power scope when said total transmitting power during greater than said maximum transmission power; As:
The maximum power-800 of a said predefined said channelized frequencies and the gross power-780 of said uplink frame channelized frequencies are compared; Significantly ,-800＜-780, promptly; Said predefined said channelized frequencies then stops scheduling less than the gross power of said uplink frame channelized frequencies.Or incite somebody to action-780 and adjust within-800, in other words, change the size of burst; As; With in the said uplink frame said burst 1, burst 2, burst 3 first power reduce to-10 ,-7 ,-4 from original-9 ,-6 ,-3 respectively; The gross power of then said uplink frame channelized frequencies is: (40*-10)+(60*-7)+(20*-4)=-900, at this moment ,-800＞-900.
Second scheduling unit is used for when said total transmitting power is less than or equal to said maximum transmission power, then dispatching.As:
The maximum power-600 of a said predefined said channelized frequencies and the gross power-780 of said uplink frame channelized frequencies are compared; Significantly ,-600＞-780, promptly; Said predefined said channelized frequencies is then dispatched greater than the gross power of said uplink frame channelized frequencies.In addition, if said channelized frequencies is redefined for-780, also dispatch.
In the practical implementation process, when data are dispatched, upgrade available bandwidth and available launch power, as: the available bandwidth that the data that first frame transmits comprise is 120 time slots, and available launch power is-15, then upgrades said available bandwidth and said transmitting power.After the said renewal, judge whether said data also include available bandwidth, at this moment, two kinds of situation appear in judged result:
First kind, there is not available bandwidth, then finish scheduling;
Second kind, available bandwidth is arranged, then continue scheduling, and judge whether to also have available transmitting power; At this moment, judged result also has two kinds of situation:
First kind, there is not available transmitting power, then finish scheduling;
Second kind, available transmitting power is arranged, then continue scheduling, and judge whether that data need scheduling in addition; At this moment, judged result also has two kinds of situation:
First kind, also have data to need scheduling, then continue the data at terminal are dispatched by the form of frame;
Second kind, there are not data to need scheduling, then finish scheduling.
One or more technical schemes in the technique scheme have following technique effect or advantage:
One, through in the data dispatch process; Adopted the technological means that the gross power of channelized frequencies is dispatched; Make in the process of data, realized that terminal in the interference-limited environment under identical networking can obtain the technique effect of required bandwidth resources to greatest extent by frame scheduling;
Two, through in the data dispatch process; Adopted two-dimentional method, the power and the bandwidth that are about to each burst multiply each other, and the multiplied result addition are obtained the technological means of the gross power of channelized frequencies again; Make in the process of data, realized the same frequency interference of control other sub-districts by frame scheduling.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. method that data scheduling is controlled is used in the future the data of self terminal and dispatches through the form of frame, and said terminal is characterized in that at the edge of the adjacent cell of this sub-district and said this sub-district said method comprises:
The definite data that will send;
Calculate total transmitting power of said this sub-district and said adjacent cell channelized frequencies;
Based on the maximum transmission power of a said total transmitting power and a predefined said channelized frequencies, the scheduling of the said data that will send is controlled through the form of frame.
2. the method for claim 1 is characterized in that, the said definite data that will send are specially:
Upstream data is specially the data that said terminal sends to the base station; Or
Downlink data is specially the data that said base station sends to the terminal.
3. the method for claim 1; It is characterized in that said frame includes n burst, wherein n is the integer greater than 1; And each burst is to there being transmitting power; Said each burst has the time slot corresponding number, and total transmitting power of said this sub-district of said calculating and said adjacent cell channelized frequencies specifically comprises:
Multiply by said burst time slot corresponding number through transmitting power, obtain the gross power of each burst each burst;
Through gross power summation, obtain total transmitting power of said frame with each burst of said frame.
4. the method for claim 1; It is characterized in that the maximum power of a said predefined said channelized frequencies is through according to the network planning and the adjacent tolerable interference in station, sets the maximum transmission power of n channelized frequencies; Wherein, n is the integer more than or equal to 1; The maximum transmission power of a said n channelized frequencies and the lowest transmit power at said terminal are compared, obtain from the maximum transmission power of a said n channelized frequencies, to confirm said this sub-district and the corresponding maximum transmission power of said adjacent cell channelized frequencies.
5. the method for claim 1 is characterized in that, said maximum transmission power based on a said total transmitting power and a predefined said channelized frequencies is controlled the scheduling of the said data that will send through the form of frame, specifically comprises:
The maximum transmission power of said total transmitting power and said predefined said channelized frequencies is compared;
When said total transmitting power during, then stop scheduling greater than the maximum transmission power of said predefined said channelized frequencies;
Or said total transmission power level adjusted within the said maximum transmission power scope.
6. the method for claim 1 is characterized in that, said maximum transmission power based on a said total transmitting power and a predefined said channelized frequencies is controlled the scheduling of the said data that will send through the form of frame, specifically comprises:
The maximum transmission power of said total transmitting power and said predefined said channelized frequencies is compared;
When said total transmitting power is less than or equal to the maximum transmission power of said predefined said channelized frequencies, then dispatch.
7. system that data scheduling is controlled is used in the future the data of self terminal and dispatches through the form of frame, and said terminal is characterized in that at the edge of the adjacent cell of this sub-district and said this sub-district said system comprises:
Confirm the unit, be used for the definite data that will send;
Computing unit is used to calculate total transmitting power of said this sub-district and said adjacent cell channelized frequencies;
Scheduling unit is used for the maximum transmission power based on a said total transmitting power and a predefined said channelized frequencies, through the form of frame the said data that will send is dispatched.
8. system as claimed in claim 7 is characterized in that, said definite unit comprises:
First confirms the unit, is used for definite said upstream data that will send;
Second confirms the unit, is used for definite said downlink data that will send.
9. system as claimed in claim 7 is characterized in that, said computing unit comprises:
Multiplication unit is used for multiply by said burst time slot corresponding number through the transmitting power with each burst, obtains the gross power of each burst;
Adder unit is used for obtaining total transmitting power of said frame through the gross power summation with said each burst.
10. system as claimed in claim 7 is characterized in that, said scheduling unit comprises:
First scheduling unit is used for then stopping scheduling, or said total transmission power level being adjusted within the said maximum transmission power scope when said total transmitting power during greater than said maximum transmission power;
Second scheduling unit is used for when said total transmitting power is less than or equal to said maximum transmission power, then dispatching.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1235443A (en) * | 1998-03-30 | 1999-11-17 | 日本电气株式会社 | Mobile communication system, mobile communication apparatus, and mobile communication method |
| CN101480077A (en) * | 2006-05-25 | 2009-07-08 | 诺基亚公司 | Dynamic resource reuse pattern selection in a cellular communication system |
| WO2010068160A1 (en) * | 2008-12-08 | 2010-06-17 | Telefonaktiebolaget L M Ericsson (Publ) | Adaptive power control in tdd mode |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1235443A (en) * | 1998-03-30 | 1999-11-17 | 日本电气株式会社 | Mobile communication system, mobile communication apparatus, and mobile communication method |
| CN101480077A (en) * | 2006-05-25 | 2009-07-08 | 诺基亚公司 | Dynamic resource reuse pattern selection in a cellular communication system |
| WO2010068160A1 (en) * | 2008-12-08 | 2010-06-17 | Telefonaktiebolaget L M Ericsson (Publ) | Adaptive power control in tdd mode |
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Effective date of registration: 20191118 Address after: 518057 Nanshan District science and technology, Guangdong Province, South Road, No. 55, No. Patentee after: ZTE Communications Co., Ltd. Address before: Yuhuatai District of Nanjing City, Jiangsu province 210012 Bauhinia Road No. 68 Patentee before: Nanjing Zhongxing New Software Co., Ltd. |
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