CN102572959A - Distribution network access layer communication system construction method based on long term evolution (LTE) technique - Google Patents
Distribution network access layer communication system construction method based on long term evolution (LTE) technique Download PDFInfo
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Abstract
Provided is a distribution network access layer communication system construction method based on long term evolution (LTE) technique. The method is combined with requirements of a distribution network and achieves safe, reliable and efficient transmission of data of distribution automation businesses, collection reading businesses, negative control businesses, bidirectional speech/video businesses and video monitoring businesses and the like based on the LTE technique. The method comprises optimizing LTE wireless resource scheduling algorithm, combining wireless resource dynamic adjustment with a resource forecast mechanism, scheduling management data, new transmission data and retransmission data, managing data including control information of a radio resource control (RRC) layer aiming at user experience (UE), broadcast control channel (BCCH) control information, paging control channel (PCCH) control information and random access (RA) information; and maintaining RRC control information queues, BCCH control information queues, PCCH control information queues, RA information queues, new transmission data queues and retransmission data queues. Transmission of control information data is preferentially guaranteed, and business areas are separated from angle of resource distribution and strictly meet quality of service (QoS) parameters of businesses.
Description
Technical field
The invention belongs to the broadband wireless network technical field, is a kind of construction method technical field based on the technological power distribution network Access Layer communication system of LTE.
Background technology
Power distribution network is a direct user oriented part in the electrical network, is the key link of the normal operation of whole electric power system.Report the automation and the intelligentized development of service system, distribution Work management system for repairment along with distribution applications system, Outage Management Systems, fault; The data scale that transmits between power distribution network main website, power distribution network substation and the distribution terminal is with increasing, and the requirement of transmission is with increasingly high.The communication system of power distribution network comprises backbone layer and Access Layer, and wherein Access Layer is the communication network of distribution main website, substation to distribution terminal.At present, power communication is the situation of " backbone network is strong, and Access Network is weak " generally.LTE (Long Term Evolution; The Long Term Evolution plan) be the wireless communication technology standard formulation plan of 3GPP standardization body from beginning in 2004, its target is to formulate one to have high data rate, the low wireless access technology that postpones and have optimization transmitted in packets ability.The LTE system physical layer can reach higher transmission bandwidth based on OFDMA technology and MIMO technology.Simultaneously, through the network rack of flattening, the delay of LTE system reduces greatly.The introducing of LTE technology can effectively solve the situation of power communication " backbone network is strong, and Access Network is weak ", effectively improves the performance of the Access Layer communications network system of supporting user information acquisition system, further promotes the intelligent ability of power distribution network.But the main growth requirement of present LTE technology towards public telecommunication network, the still prematurity of application in power distribution network Access Layer communication network.
Summary of the invention
The present invention is based on the LTE technology; The distribution communication system architecture is studied,, the LTE standard is improved and optimizated to its demand and node characteristic distributions; Break through key technology wherein; Carry out based on the building and application experiment of the power distribution network Access Layer communication system of LTE technology, carry out and disposes to support the intelligent business of power distribution network, better realization is to power distribution network O&M, monitoring.
The present invention realizes through following technical scheme.
A kind of power distribution network Access Layer communication system construction method based on the LTE technology, the present invention specifically comprises the steps:
1) based on the LTE technology, isolation, the transmission of safe, reliable, efficient rate that power distribution automation is professional in the realization power distribution network connecting system, collection is copied data services such as business, negative control business, double-directional speech/video traffic and video monitoring service;
2) combine the power distribution network traffic performance, optimize the LTE wireless resource management algorithm, adopt a kind of scheduling method for wireless resource, safeguard a RRC control information formation, be used to preserve the RRC control information based on feedback mechanism; Safeguard a BCCH control information formation, be used to preserve the BCCH control information; Safeguard a PCCH message queue, be used to preserve PCCH information; Safeguard a RA message queue, be used to preserve RA information; Safeguard the formation of a new biography business datum, the business datum that is used to send new biography; Safeguard that one retransmits the business datum formation, is used to send the business datum of re-transmission;
The scheduling flow that this method is used is:
A) be control information, business datum distributing radio resource;
B) scheduling control information data: the order according to RRC control formation, BCCH control information formation, PCCH control information formation, RA message queue descend is successively dispatched administrative messag;
C) dispatching services data: dispatch successively according to re-transmission business datum, new biography business datum;
When scheduling control information, when resource is not enough, then seizes the resource of distributing and dispatch for business datum, and statistics control information resource operating position, be recorded in resource and use in the information table, for the control information resource allocation provides reference frame; When the dispatching services data, new biography comprises the power distribution automation business datum with the re-transmission business datum, collects and copy business datum, negative control business datum, double-directional speech/video traffic data and video monitoring service data; Distribute private resource for each business datum, the resource of each business datum is dynamically adjusted in scheduling process;
Wherein, construction method is following:
(1) power distribution network Access Layer Business Entity is sent to the LTE terminal through wired connection with business datum;
(2) the LTE terminal is transferred to the LTE base station through wireless connections with business datum;
(3) the LTE base station is transmitted the business datum that receives through wired connection and is dealt into the distribution main website;
Power distribution network Access Layer Business Entity is connected through wired or wireless with the LTE terminal; The LTE base station is connected through wired or wireless with the distribution main website.
The concrete steps of scheduling flow of the present invention are following:
S1.1: statistics is also distributed the needed Radio Resource of present frame control information;
S1.2: scheduling RRC control information data;
S1.3: scheduling BCCH control information;
S1.4: scheduling PCCH control information;
S1.5: scheduling RA information;
S1.6: distribute private resource for each business datum according to type of service;
S1.7: adjust the data priority business if desired, execution in step S1.8 then, otherwise execution in step S1.9;
S1.8: adjustment data service priority, execution in step 1.10;
S1.9: each data service is dispatched according to default priority;
S1.10: each data service is dispatched according to adjusted priority;
S1.11: finishing scheduling.
The concrete steps of scheduling control information of the present invention comprise:
S2.1: statistics is also distributed the required Radio Resource of present frame control information;
S2.2: scheduling RRC control information data;
S2.3: scheduling BCCH control information data;
S2.4: scheduling PCCH control information data;
S2.5: scheduling RA information data;
The present invention dispatches the concrete steps that retransmit business datum and comprises:
S3.1: the dedicated radio resources of each business datum of dispensed;
S3.2: scheduling retransmits business datum;
S3.3: if retransmit in the business datum double-directional speech/video traffic data are arranged, with regard to execution in step S3.4, otherwise execution in step S3.5;
S3.4: on private resource 1, dispatch double-directional speech/video traffic data;
S3.5: if the video monitoring service data are arranged, execution in step S3.6 then; Otherwise execution in step S3.7;
S3.6: scheduling video monitoring service data on private resource 2;
S3.7: if there is collection to copy business datum, then execution in step S3.8; Otherwise execution in step S3.9;
S3.8: the scheduling collection is copied business datum on private resource 3;
S3.9: if the power distribution automation business datum is arranged, execution in step S3.10 then; Otherwise execution in step S3.11;
S3.10: scheduling power distribution automation business datum on private resource 4;
S3.11: if negative control business datum, then execution in step S3.12 are arranged; Otherwise execution in step S3.13;
S3.12: the negative control of scheduling business datum on private resource 5;
S3.13: receive the scheduling that retransmits business datum;
Retransmit business datum or new biography business datum and use same private resource; Each professional private resource needs dynamically adjustment; In each professional data retransmission territory of scheduling during the new biography data; Add up the bandwidth use amount of scheduling this business data retransmission and new biography data, and the foundation that private resource is adjusted during as this data service of next frame scheduling with this amount of bandwidth storage;
Double-directional speech/video traffic, video industry monitoring business, collection are copied business, power distribution automation is professional and negative control business between dispatching priority need dynamically adjustment, the acquiescence dispatching priority be followed successively by from low to high two-way video monitoring business, voice/video professional,, collection copies business, power distribution automation is professional and negative control is professional; Preferentially satisfying the transmission of double-directional speech/video traffic data in each business, secondly is that the data that will guarantee video monitoring service transmit.Video monitoring service, collection are copied in business, power distribution automation business and the negative control business and are safeguarded a stepping factor S, do not push away long-pending if the stepping factor, is then represented these professional data less than 0; Need not revise this professional dispatching priority, if the stepping factor, representes then that this business datum has accumulation greater than 1; Need to revise this professional dispatching priority; The stepping factor is big more, explains that the accumulation of this business datum is serious more, and the professional dispatching priority of this of modification is high more; The priority step of each data service of control of adopting in this scheme is following:
S4.1: the priority of double-directional speech/video data service is the highest;
S4.2: the stepping factor of calculating video monitoring service;
S4.3: calculated set is copied the professional stepping factor;
S4.4: calculate the professional stepping factor of power distribution automation;
S4.5: calculate the professional stepping factor of negative control;
S4.6: the professional stepping factor of each that will calculate is arranged in order according to the order from little arrival, is carrying out next frame when scheduling, data retransmission or new biography data all according to this priority orders to scheduling service data;
S4.7: each data service priority adjustment finishes.
The present invention proposes a kind of method that makes up based on the power distribution network Access Layer communication system of LTE technology; The wired connection mode is adopted at power distribution network and LTE terminal; LTE terminal and LTE base station communication adopt wireless mode to transmit data, and LTE base station and distribution main website adopt the wired connection mode to send the data that receive to the power distribution network main website.Special, power distribution network also can adopt wireless technologys such as ZIGBEE, WIFI to be connected with the LTE terminal; Special LTE base station also can adopt wireless technologys such as ZIGBEE, WIFI to be connected with the distribution main website;
A kind of power distribution network Access Layer communication system construction method based on the LTE technology that the present invention proposes is safeguarded RRC control information formation, is used to store the RRC control information data; BCCH control information formation is used to store the BCCH control information data; PCCH control information formation is used to store the PCCH control information data; RA control information formation is used to store the RA information data; The data retransmission formation is used to store each professional data that retransmit; New biography data queue is used to store each professional new biography data; Business datum comprises distribution network automated business, negative control business, collects and copy business, double-directional speech/video traffic and video monitoring service.
A kind of power distribution network Access Layer communication system construction method based on the LTE technology that the present invention proposes is each traffic assignments private resource, and different private resources are served different business types, and the business that is implemented on the resource allocation level is isolated; According to each professional bandwidth usage of previous frame, dynamically adjust between different private resources;
The power distribution network Access Layer communication system construction method that the present invention proposes based on the LTE technology; The acquiescence dispatching priority of power distribution network data service has following regulation: according to double-directional speech/video traffic, video monitoring service, collection copy business, distribution network automated business, negative control service priority descends successively; Wherein negative control is professional and the distribution automation business-level is the highest; Will guarantee the scheduling of this business datum constantly, video monitoring service, collection are copied the priority of business, distribution network automated business, negative control business and are dynamically adjusted according to each professional stepping factor.Factors such as the overstocked state of the stepping factor and current frame data, scheduling poll time are relevant.The stepping factor is less than 1, and expression need not improve this professional dispatching priority, and the stepping factor is greater than 1, and expression needs to improve this professional dispatching priority.
Description of drawings
Fig. 1 is based on the power distribution network Access Layer communication system network topological diagram of LTE technology;
Fig. 2 is based on the power distribution network Access Layer communication system scheduling flow figure of LTE technology;
Fig. 3 is the flow chart of control information in the scheduling power distribution network Access Layer communication system;
Fig. 4 is the flow chart of each professional data retransmission and new biography data in the scheduling power distribution network Access Layer communication system;
Fig. 5 is the flow chart of each data service priority of adjustment in the scheduling power distribution network Access Layer communication system.
Embodiment
As shown in Figure 1, be power distribution network access communication system network topological diagram.Can be connected with wired mode between electrical network business data transmission and LTE system; Also can connect with wireless mode; The LTE terminal sends to the LTE base station with the power distribution network business datum that receives with wireless mode, and the LTE base station sends the data that receive to the distribution main website with the mode of wired connection.LTE base station and the direct mode that also can adopt wireless connections that is connected of distribution main website.
Each event handling step (scheduling flow in the LTE power distribution network Access Layer communication system) as follows among Fig. 2:
S1.1: statistics is also distributed the needed Radio Resource of present frame control information;
S1.2: scheduling RRC control information data;
S1.3: scheduling BCCH control information;
S1.4: scheduling PCCH control information;
S1.5: scheduling RA information;
S1.6: distribute private resource for each business datum according to statistics;
S1.7: adjust the data priority business if desired, execution in step S1.8 then, otherwise execution in step S1.9;
S1.8: adjustment data service priority, execution in step 1.10;
S1.9: each data service is dispatched according to default priority;
S1.10: each data service is dispatched according to adjusted priority;
S1.11: finishing scheduling.
Each event handling step (control information scheduling flow in the LTE power distribution network Access Layer communication system) as follows among Fig. 3:
S2.1: statistics is also distributed the required Radio Resource of present frame control information;
S2.2: scheduling RRC control information data;
S2.3: scheduling BCCH control information data;
S2.4: scheduling PCCH control information data;
S2.5: scheduling RA information data;
Each event handling step (service data scheduling flow process in the LTE power distribution network Access Layer communication system) as follows among Fig. 4: S3.1: the dedicated radio resources of each business datum of dispensed;
S3.2: scheduling retransmits business datum;
S3.3: if retransmit in the business datum double-directional speech/video traffic data are arranged, with regard to execution in step S3.4, otherwise execution in step S3.5;
S3.4: on private resource 1, dispatch double-directional speech/video traffic data;
S3.5: if the video monitoring service data are arranged, execution in step S3.6 then; Otherwise execution in step S3.7;
S3.6: scheduling video monitoring service data on private resource 2;
S3.7: if there is collection to copy business datum, then execution in step S3.8; Otherwise execution in step S3.9;
S3.8: the scheduling collection is copied business datum on private resource 3;
S3.9: if the power distribution automation business datum is arranged, execution in step S3.10 then; Otherwise execution in step S3.11;
S3.10: scheduling power distribution automation business datum on private resource 4;
S3.11: if negative control business datum, then execution in step S3.12 are arranged; Otherwise execution in step S3.13;
S3.12: the negative control of scheduling business datum on private resource 5;
S3.13: receive the scheduling that retransmits business datum.
Each event handling step (in the LTE power distribution network Access Layer communication system service priority adjustment flow chart) as follows among Fig. 5:
S4.1: the priority of double-directional speech/video data service is the highest;
S4.2: the stepping factor of calculating video monitoring service;
S4.3: calculated set is copied the professional stepping factor;
S4.4: calculate the professional stepping factor of power distribution automation;
S4.5: calculate the professional stepping factor of negative control;
S4.6: the professional stepping factor of each that will calculate is arranged in order according to the order from little arrival, is carrying out next frame when scheduling, data retransmission or new biography data all according to this priority orders to scheduling service data;
S4.7: each data service priority adjustment finishes.
Claims (4)
1. the power distribution network Access Layer communication system construction method based on the LTE technology is characterized in that, comprises the steps:
Based on the LTE technology, isolation, the transmission of safe, reliable, efficient rate that power distribution automation is professional in the realization power distribution network connecting system, collection is copied data services such as business, negative control business, double-directional speech/video traffic and video monitoring service;
In conjunction with the power distribution network traffic performance, optimize the LTE wireless resource management algorithm, adopt a kind of scheduling method for wireless resource based on feedback mechanism, safeguard a RRC control information formation, be used to preserve the RRC control information; Safeguard a BCCH control information formation, be used to preserve the BCCH control information; Safeguard a PCCH message queue, be used to preserve PCCH information; Safeguard a RA message queue, be used to preserve RA information; Safeguard the formation of a new biography business datum, the business datum that is used to send new biography; Safeguard that one retransmits the business datum formation, is used to send the business datum of re-transmission;
The scheduling flow that this method is used is:
Be control information, business datum distributing radio resource;
The scheduling control information data: the order according to RRC control formation, BCCH control information formation, PCCH control information formation, RA message queue descend is successively dispatched administrative messag;
Dispatching services data: dispatch successively according to re-transmission business datum, new biography business datum;
When scheduling control information, when resource is not enough, then seizes the resource of distributing and dispatch for business datum, and statistics control information resource operating position, be recorded in resource and use in the information table, for the control information resource allocation provides reference frame; When the dispatching services data, new biography comprises the power distribution automation business datum with the re-transmission business datum, collects and copy business datum, negative control business datum, double-directional speech/video traffic data and video monitoring service data; Distribute private resource for each business datum, the resource to each business datum in scheduling process is dynamically adjusted;
Wherein, construction method is following:
Power distribution network Access Layer Business Entity is sent to the LTE terminal through wired or wireless connected mode with business datum;
The LTE terminal is transferred to the LTE base station through wireless connections with business datum;
The LTE base station is transmitted the business datum that receives through wired connection and is dealt into the distribution main website;
Power distribution network Access Layer Business Entity is connected through wired or wireless with the LTE terminal; The LTE base station is connected through wired or wireless with the distribution main website.
2. according to the power distribution network Access Layer communication system construction method based on the LTE technology of claim 1, the concrete steps of its scheduling flow are following:
S1.1: statistics is also distributed the needed Radio Resource of present frame control information;
S1.2: scheduling RRC control information data;
S1.3: scheduling BCCH control information;
S1.4: scheduling PCCH control information;
S1.5: scheduling RA information;
S1.6: distribute private resource for each business datum according to type of service;
S1.7: adjust the data priority business if desired, execution in step S1.8 then, otherwise execution in step S1.9;
S1.8: adjustment data service priority, execution in step 1.10;
S1.9: each data service is dispatched according to default priority;
S1.10: each data service is dispatched according to adjusted priority;
S1.11: finishing scheduling.
3. according to the power distribution network connecting system construction method based on the LTE technology of claim 1, the concrete steps of its scheduling control information comprise:
S2.1: statistics is also distributed the required Radio Resource of present frame control information;
S2.2: scheduling RRC control information data;
S2.3: scheduling BCCH control information data;
S2.4: scheduling PCCH control information data;
S2.5: scheduling RA information data.
4. according to the power distribution network connecting system construction method based on the LTE technology of claim 1, the concrete steps that its scheduling retransmits business datum comprise:
S3.1: the dedicated radio resources of each business datum of dispensed;
S3.2: scheduling retransmits business datum;
S3.3: if retransmit in the business datum double-directional speech/video traffic data are arranged, with regard to execution in step S3.4, otherwise execution in step S3.5;
S3.4: on private resource 1, dispatch double-directional speech/video traffic data;
S3.5: if the video monitoring service data are arranged, execution in step S3.6 then; Otherwise execution in step S3.7;
S3.6: scheduling video monitoring service data on private resource 2;
S3.7: if there is collection to copy business datum, then execution in step S3.8; Otherwise execution in step S3.9;
S3.8: the scheduling collection is copied business datum on private resource 3;
S3.9: if the power distribution automation business datum is arranged, execution in step S3.10 then; Otherwise execution in step S3.11;
S3.10: scheduling power distribution automation business datum on private resource 4;
S3.11: if negative control business datum, then execution in step S3.12 are arranged; Otherwise execution in step S3.13;
S3.12: the negative control of scheduling business datum on private resource 5;
S3.13: receive the scheduling that retransmits business datum;
Private resource 1 is double-directional speech/video traffic private resource, and private resource 2 is the video traffic private resource, and private resource 3 is copied the service-specific resource for collection, and private resource 4 is a power distribution automation service-specific resource, and private resource 5 is negative control service-specific resource; Retransmit business datum or new biography business datum and use same private resource; Each professional private resource needs dynamically adjustment; In each professional data retransmission territory of scheduling during the new biography data; Add up the bandwidth use amount of scheduling this business data retransmission and new biography data, and the foundation that private resource is adjusted during as this data service of next frame scheduling with this amount of bandwidth storage;
Double-directional speech/video traffic, video industry monitoring business, collection are copied business, power distribution automation is professional and negative control business between dispatching priority need dynamically adjustment, the acquiescence dispatching priority is followed successively by the two-way video monitoring business from low to high, voice/video is professional, collection is copied business, power distribution automation is professional and negative control is professional; Secondly preferential satisfied negative control business is the data transmission that will guarantee that power distribution automation is professional in each business; Video monitoring service, collection are copied in business, power distribution automation business and the negative control business and are safeguarded a stepping factor S, do not pile up if the stepping factor, is then represented these professional data less than 0; Need not revise this professional dispatching priority, if the stepping factor, representes then that this business datum has accumulation greater than 1; Need to revise this professional dispatching priority; The stepping factor is big more, explains that the accumulation of this business datum is serious more, and the professional dispatching priority of this of modification is high more; The priority step of each data service of control of adopting in this scheme is following:
S4.1: the priority of double-directional speech/video data service is the highest;
S4.2: the stepping factor of calculating video monitoring service;
S4.3: calculated set is copied the professional stepping factor;
S4.4: calculate the professional stepping factor of power distribution automation;
S4.5: calculate the professional stepping factor of negative control;
S4.6: the professional stepping factor of each that will calculate is arranged in order according to the order from little arrival, is carrying out next frame when scheduling, data retransmission or new biography data all according to this priority orders to scheduling service data;
S4.7: each data service priority adjustment finishes.
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| CN105227491B (en) * | 2015-10-21 | 2019-01-08 | 国家电网公司 | A kind of resource regulating method in electricity consumption wireless access network |
| CN105959090A (en) * | 2016-06-16 | 2016-09-21 | 国网信息通信产业集团有限公司 | Service processing method and device of power wireless private network |
| CN107453966A (en) * | 2017-08-08 | 2017-12-08 | 重庆小目科技有限责任公司 | Remote data transmission adaptive device and control method for intelligent power distribution business |
| CN107453966B (en) * | 2017-08-08 | 2020-10-30 | 重庆小目科技有限责任公司 | Remote data transmission adapting device for intelligent power distribution service and control method |
| CN109088860A (en) * | 2018-07-20 | 2018-12-25 | 珠海许继芝电网自动化有限公司 | A kind of cross-safety zone data transmission scheduling method and system |
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