CN102882557A - Coordinator recovery method and power line communication equipment - Google Patents
Coordinator recovery method and power line communication equipment Download PDFInfo
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- CN102882557A CN102882557A CN2012103608344A CN201210360834A CN102882557A CN 102882557 A CN102882557 A CN 102882557A CN 2012103608344 A CN2012103608344 A CN 2012103608344A CN 201210360834 A CN201210360834 A CN 201210360834A CN 102882557 A CN102882557 A CN 102882557A
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Abstract
The invention is suitable for the communication field and provides a coordinator recovery method and power line communication equipment. The method comprises the following steps: when determining that a central coordinator CCo is accidentally turned off and no specified standby CCo is available, PLC (Programmable Logic Controller) equipment sends an indication message to other PLC equipment and receives indication messages sent by the other PLC equipment; the indication messages include the CCo capability; and the PLC equipment determines whether the indication messages sent by the other PLC equipment can become new CCos, and if yes, executes the CCo recovery process. The method provided by the invention has the advantages that a certain PLC can be selected as soon as possible to serve as a new coordinator, so that network paralysis is avoided, not all the equipment needs to re-execute the network discovery process, accordingly, the network recovery time delay is lowered and uninterrupted transmission of some services can be guaranteed to some extent.
Description
Technical field
The invention belongs to the communications field, relate in particular to a kind of coordinator recovery method and power line communications apparatus.
Background technology
Power line communication is to utilize high-voltage power line (35kV and above), medium voltage power line (10-30kV electric pressure) or low-voltage distribution wire (380/220kV subscribers feeder) to carry out a kind of specific communication mode of communication as information transmitting medium.This technology is loaded into the high-frequency signal of carrying information on the power line, carries out transfer of data with power line, and the power line modulator/demodulator by special use separates high-frequency signal from power line, be sent to terminal equipment.
From the angle that power line communication is used, along with the development of network technology and multimedia technology, the trend that is applied to family's broadband network and intelligent grid is day by day obvious.Comprise the standards such as IEEE P1901, ITU-T G.hn, Homeplug AV, all provided complete broadband P LC home network technologies scheme, can support the distribution of a plurality of data or video flowing, comprise HDTV (High-Definition Television) (the High Definition Television that spreads all over whole family, HDTV) and Standard Definition Television (Standard Definition Television, SDTV), support home entertaining to use and the broadband high-speed online.
Family's broadband P LC network generally is a centralized management network, a central coordinator (Central Coordinator is arranged in each network, CCo), central coordinator is except as common PLC equipment, also to be responsible for the management of whole network, comprise that network is set up, the allocated bandwidth of website access and mandate, the whole network and scheduling of resource, with the coordination of a plurality of adjacent networks, network power management etc.What need additional description is that according to the difference of the function of supporting, the CCo ability can be divided into Three Estate, is followed successively by from small to large grade 0, grade 1 and grade 2.The CCo ability is the equipment of grade 0, can not support QoS, only possesses some basic functions that must realize; The CCo ability is the equipment of grade 1, except the function of the CCo that can support grade 0, can also support QoS when working in incompatible mode; The CCo ability is the equipment of grade 3, except the function of the CCo that can support grade 1, can also support performance in coodination modes, carry out interference coordination and resource-sharing with adjacent networks.The backup coordinator ability nonrated minute, there is the backup coordinator ability its minute and without the backup coordinator ability, it belongs to different concept from the CCo ability.
In network, may exist some equipment, can't directly receive the beacon that CCo sends, namely can't with the CCo direct communication, but can determine by other equipment in the network existence of network, in this case, these equipment are with respect to CCo, just for hiding website.At this moment, can generally can pass through a trunking, be used for the message between forwarding and the CCo, after CCo is known the existence of hiding website, can specify a suitable agent coordinator (Proxy Coordinator, PCo), after this all message is all transmitted by PCo between hiding website and CCo.
In the PLC of family network, may be because equipment fault or situation about by mistake will be extracted from socket as the equipment of CCo by the user, go offline in order to solve this unexpected CCo without early warning, stipulated the function of a kind of CCo for subsequent use, telegon in the network can specify an equipment as the backup coordinator of current network, when existing network C Co breaks down or is pulled out and when going offline, specified CCo for subsequent use then can carry out the network recovery process, become new CCo, thereby guarantee that network can not paralysed because of going offline of former CCo and again networking.
Current C Co can select a suitable website as CCo for subsequent use according to network topology, this CCo for subsequent use fixes, and be not periodically to select, only have when the CCo for subsequent use of this appointment occur going offline or deviated from network after, the current C Co network topological information of just can reappraising is selected new CCo for subsequent use, when CCo switches, can notify the CCo for subsequent use in the new telegon network, new telegon may select a different website to be used as backup coordinator.Current C Co can give CCo for subsequent use by the network information that upgrades in time alternately of administrative messag after having specified CCo for subsequent use.
In the technical scheme that realizes prior art, there are the following problems to find prior art:
When the technical scheme of prior art disconnects and does not specify CCo for subsequent use without CCo for subsequent use, CCo again in the CCo accident, each electric power communication device need to be carried out the flow process that again networks in the network, carry out web search with again networking, the again networking meeting owing to network brings than long time delay like this.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of coordinator recovery method, be intended to solve disconnecting and during again without CCo for subsequent use CCo is unexpected of prior art, each power line communications apparatus need to be carried out the flow process that again networks in the network, carry out web search with again networking, like this owing to the again networking of network brings problem than long time delay.
On the one hand, the invention provides a kind of coordinator recovery method, described method comprises:
Power line communication PLC equipment is determined that central coordinator CCo is unexpected and is disconnected and during again without the CCo for subsequent use of appointment, PLC equipment sends Indication message to other PLC equipment, receives the Indication message that other PLC equipment send; Described Indication message comprises: the CCo ability;
PLC equipment judges according to the Indication message that described other PLC equipment send whether itself can become new CCo, in this way, carries out the recovery flow process of CCo.
Optionally, described Indication message also comprises:
Backup coordinator ability, Terminal Equipment Identifier TEI, MAC Address or found the number of website.
Optionally, determine to disconnect and be specially without the method for CCo for subsequent use again CCo is unexpected:
Whether PLC equipment judges the time of not receiving central beacon greater than time threshold, in this way, then determines in the unexpected disconnection of CCo and again without CCo for subsequent use.
Optionally, described PLC equipment sends Indication message to other PLC equipment, and the Indication message that receives other PLC equipment transmissions specifically comprises:
Described PLC equipment judges whether itself possesses the backup coordinator ability, in this way, sends Indication message to other PLC equipment of network in very first time section t1, receives the Indication message that other PLC equipment send; As not no and do not receive Indication message in very first time section t1, PLC equipment sends Indication message to other PLC equipment in the second time period t 2, receives the Indication message that other PLC equipment send.
Optionally, described PLC equipment judges that according to the Indication message that described other PLC equipment send the implementation method that itself whether can become new CCo is specially:
The Indication message of described PLC equipment as receiving that in t1 other PLC equipment send then determines according to the described Indication message that receives whether itself is the highest PLC equipment of CCo ability rating;
In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo;
In this way and other PLC equipment identical with CCo ability rating own are arranged,
Judge whether this is the PLC equipment of having found website number maximum in the identical PLC equipment of CCo ability rating;
In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo;
In this way and have and itself found the same number of other PLC equipment of website,
Judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is the PLC equipment of TEI maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
Optionally, described PLC equipment judges that according to the Indication message that described other PLC equipment send the implementation method that itself whether can become new CCo is specially:
Such as the Indication message of not receiving that in t1 other PLC equipment send, then according to determining at the Indication message that receives described in the t2 whether itself is the highest PLC equipment of CCo ability rating;
In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo;
In this way and other PLC equipment identical with CCo ability rating own are arranged,
Judge whether this is the PLC equipment of having found that the website number is maximum in the identical PLC equipment of CCo ability rating;
In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo;
In this way and have and itself found the same number of other PLC equipment of website,
Judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is maximum PLC equipment in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
On the other hand, provide a kind of power line communications apparatus, described equipment comprises:
Transmitting element disconnects and during again without the CCo for subsequent use of appointment, sends Indication message to other power line communications PLC equipment determining that telegon CCo is unexpected;
Receiving element is used for receiving the Indication message that other PLC equipment send; Described Indication message comprises: the CCo ability, and the Indication message that receives passed to the affirmation performance element;
Judge performance element, be used for judging according to the Indication message that described other PLC equipment that receive send whether itself can become new CCo, in this way, carry out the recovery flow process of CCo.
Optionally, described Indication message also comprises:
Backup coordinator ability, Terminal Equipment Identifier TEI, MAC Address or found the number of website.
Optionally, described transmitting element specifically is used for judging whether itself possesses the backup coordinator ability, in this way, sends Indication message to other PLC equipment of network in very first time section t1, and described receiving element is used for receiving the Indication message that other PLC equipment send; Described transmitting element specifically is used for, and when judging no and do not receive Indication message in very first time section t1, sends Indication message to other PLC equipment in the second time period t 2, receives the Indication message that other PLC equipment send.
Optionally, described judgement performance element specifically is used for as receives the Indication message that other PLC equipment send at t1, then determines according to the described Indication message that receives whether itself is the highest PLC equipment of CCo ability rating; In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo; In this way and other PLC equipment identical with CCo ability rating own are arranged, judge whether this is the PLC equipment of having found website number maximum in the identical PLC equipment of CCo ability rating; In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo; In this way and have and itself found the same number of other PLC equipment of website, judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of TEI maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
Optionally, described judgement performance element specifically is used for as does not receive the Indication message that other PLC equipment send at t1, then according to determining at the Indication message that receives described in the t2 whether itself is the highest PLC equipment of CCo ability rating; In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo; In this way and other PLC equipment identical with CCo ability rating own are arranged, judge whether this is the PLC equipment of having found that the website number is maximum in the identical PLC equipment of CCo ability rating; In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo; In this way and have and itself found the same number of other PLC equipment of website, judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is maximum PLC equipment in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
In embodiments of the present invention, technical scheme provided by the invention is not specified under the scene of backup coordinator at current telegon, when the situation that telegon goes offline occurring, a kind of method of determining new telegon is provided, can select as soon as possible certain PLC equipment, serve as new telegon, avoided network the situation of paralysis to occur, avoided all equipment all to re-execute the Network finding flow process, reduced the time delay of network recovery, and can guarantee that to a certain extent the transmission of some business can not interrupt.
Description of drawings
Fig. 1 is the flow chart that the embodiment of the invention provides the coordinator recovery method;
Fig. 2 is the flow chart of the coordinator recovery method that provides of one embodiment of the invention;
Fig. 3 is the flow chart of the coordinator recovery method that provides of another embodiment of the present invention; And
Fig. 4 is the structure chart of the power line communications apparatus that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Need to prove, power line communications apparatus is after networking, the beacon or the Indication message that regularly send according to CCo in the network, judge whether current network has specified CCo for subsequent use, if specified CCo for subsequent use, then only need the state by CCo monitoring current C Co for subsequent use, other equipment then need not to monitor current C Co state, need not to carry out the technical scheme that the specific embodiment of the invention provides.If power line communications apparatus is determined not specify CCo for subsequent use in current network, then whether the LSB of the TEI of judgement itself is 1, if, then do not monitor the process (namely not participating in the flow process of technical scheme provided by the invention) of back, certainly in actual applications, can be set as also whether the LSB that judges TEI is 0, if, then do not monitor, the process of back does not participate in yet.
The embodiment of the invention provides a kind of coordinator recovery method, and the method is carried out by power line communications apparatus, and the method comprises as shown in Figure 1:
S11, power line communication PLC equipment are determined that telegon CCo is unexpected and are disconnected and during again without the CCo for subsequent use of appointment, PLC equipment sends Indication message to other PLC equipment;
S12, PLC equipment receive the Indication message that other PLC equipment send;
S13, PLC judge according to the Indication message that other PLC equipment that receive send whether itself can become new CCo, in this way, carry out the recovery flow process of CCo; As no, wait for receiving the beacon that new CCo sends.
The method that the present embodiment provides is not specified under the scene of backup coordinator at current telegon, when the situation that telegon goes offline occurring, a kind of method of determining new telegon is provided, can select as soon as possible certain PLC equipment, serve as new telegon, avoided network the situation of paralysis to occur, avoided all equipment all to re-execute the Network finding flow process, reduced the time delay of network recovery, and can guarantee that to a certain extent the transmission of some business can not interrupt.
Above-mentioned Indication message comprises: the CCo ability.
Optionally, above-mentioned Indication message also comprises:
Backup coordinator ability, Terminal Equipment Identifier TEI, MAC Address, message SN or found the number of website.
Optionally, above-mentionedly determine to disconnect and be specially without the method for CCo for subsequent use again CCo is unexpected:
Whether PLC equipment judges the time of not receiving central beacon greater than time threshold, in this way, then determines in the unexpected disconnection of CCo and again without CCo for subsequent use.
Optionally, above-mentioned PLC equipment sends Indication messages to other PLC equipment and specifically comprises:
PLC equipment judges whether itself has the backup coordinator ability, in this way, sends Indication message to other PLC equipment of network in very first time section t1, and receives the Indication message that other PLC equipment send; As not no and do not receive the Indication message that other PLC equipment send in very first time section t1, PLC equipment sends Indication message to other PLC equipment in the second time period t 2, again receives the Indication message that other PLC equipment send.
Need to prove, such scheme will send Indication message, and to be divided into 2 time periods be the quantity that sends in order to reduce network indicating message, allow as much as possible the PLC filling apparatus with backup coordinator ability as new CCo, because in actual applications, general PLC equipment in can whole network all possesses the backup coordinator ability.
Optionally, above-mentioned PLC equipment judges that according to the Indication message that described other PLC equipment send the implementation method that itself whether can become new CCo is specially:
The Indication message of PLC equipment as receiving that in t1 other PLC equipment send then determines according to the described Indication message that receives whether itself is the highest PLC equipment of CCo ability rating;
In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo;
In this way and other PLC equipment identical with CCo ability rating own are arranged,
Judge whether this is the PLC equipment of having found website number maximum in the identical PLC equipment of CCo ability rating; In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo;
In this way and have and itself found the same number of other PLC equipment of website,
Judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that the website number is identical and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is maximum PLC equipment in finding the PLC equipment that the website number is identical and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that the website number is identical and the CCo ability rating is identical, in this way, confirm that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that the website number is identical and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
Optionally, above-mentioned PLC equipment judges that according to the Indication message that described other PLC equipment send the implementation method that itself whether can become new CCo is specially:
Such as the Indication message of not receiving that in t1 other PLC equipment send, then according to determining at the Indication message that receives described in the t2 whether itself is the highest PLC equipment of CCo ability rating;
In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo;
In this way and other PLC equipment identical with CCo ability rating own are arranged,
Judge whether this is the PLC equipment of finding website number maximum in the identical PLC equipment of CCo ability rating; In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo;
In this way and have and itself found the same number of other PLC equipment of website,
Or judge whether this is the PLC equipment of TEI maximum in finding the PLC equipment that the website number is identical and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is the PLC equipment of TEI maximum in finding the PLC equipment that the website number is identical and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that the website number is identical and the CCo ability rating is identical, in this way, confirm that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that the website number is identical and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
Embodiment
The specific embodiment of the invention provides an embodiment, the present embodiment provides a kind of coordinator recovery method, the technology scene that the present embodiment is realized is, PLC equipment is judged this as the PLC equipment with backup coordinator ability in the power line communication network of the present embodiment, the method comprises the steps: as shown in Figure 2
S21, PLC equipment have judged whether that N continuous beacon period do not receive central beacon, and whether the beacon in the frame head of all transmission detects sign (Beacon Detect Flag) and all indicates and do not detect central beacon in the network within identical beacon period, in this way, determining then that CCo is unexpected disconnects and again without CCo for subsequent use.
Need to prove, above-mentioned N can be set up on their own by producer, for example N=2,3 or 4.The above-mentioned unexpected imbody mode that disconnects can for: equipment fault or CCo equipment such as are pulled out at the situations such as going offline of causing.
Certain above-mentioned S21 can also adopt following manner to replace, and whether judges the time of not receiving central beacon greater than time threshold, in this way, then determines the unexpected disconnection of CCo.
S22, at very first time section t1, PLC equipment sends Indication message to other PLC equipment, this Indication message includes but not limited to: Terminal Equipment Identifier (Terminal Equipment Identifier, TEI), MAC Address, CCo ability, backup coordinator ability, message SN, find website number etc.
Optionally, above-mentioned Indication message is specifically as follows: CM_CCoResolution.ind, the concrete manifestation form of certain above-mentioned Indication message also can be other forms, the Field Definition of above-mentioned indication information is as shown in table 1, MsgNumber represents the sequence number of message in the table 1, and CCo Capability represents the CCo ability; BackupCCo Capability represents the backup coordinator ability, and DiscoveredSTA_Num represents to find the website number.
Table 1
Need to prove, the implementation method of above-mentioned S22 is specifically as follows: the described Indication message of PLC device broadcasts, other each PLC equipment are after receiving Indication message in the network, judge whether to receive this Indication message, if receive and transmitted this Indication message, then do not continue to transmit, do not transmit if receive or receive, this Indication message of broadcast transmission then, need to prove, the RM of above-mentioned Indication message can be in the following way: each PLC equipment can be according to MAC Address or TEI and the message SN of the PLC equipment that sends this Indication message, judge whether the Indication message of receiving that this Indication message sequence number was corresponding, if received and transmitted, then no longer transmit, if do not receive this Indication message, the unreceived Indication message of broadcast transmission then.
S23, PLC equipment receive the Indication message that other PLC equipment send, and preserve the content that Indication message that other PLC equipment send comprises (for example TEI, MAC Address, CCo ability or backup coordinator ability, message SN etc.).
The Indication message that S24, PLC equipment send according to other PLC equipment of preserving judge whether itself can become new CCo, if judgement itself can become new CCo, then carry out the recovery flow process of CCo.If judgement itself can not become new CCo, then only need to wait for that new CCo sends beacon, do not do and continue to process.
Need to prove, the implementation of above-mentioned S24 is specifically as follows:
After very first time section t1 finished, PLC equipment carried out whether can becoming the judgement of new CCo according to the content of the Indication message of preserving above, concrete mode: judge whether itself is the highest PLC equipment of CCo ability rating, in this way, confirm that this is as new CCo; If the CCo ability rating is identical, judge whether itself is the equipment of having found that the website number is maximum, and in this way, affirmation itself becomes new CCo; If found that the website number is also identical, judge whether itself is the PLC equipment of TEI minimum (also can be maximum in actual conditions), in this way, confirm that this is as new CCo; Certainly in actual applications, except the size that compares TEI, MAC Address can also be compared, when comparing MAC Address, the PLC filling apparatus of MAC Address minimum (in actual conditions, also can be maximum) can be got as new CCo.Above-mentioned very first time section t1 can send required time according to message in network, set up on their own by manufacturer.
The recovery flow process of above-mentioned CCo specifically can be referring to the associated description in the HomePlug AV standard.
The method that the present embodiment provides is not specified under the scene of backup coordinator at current telegon, when the situation that telegon goes offline occurring, a kind of method of determining new telegon is provided, can select as soon as possible certain PLC equipment, serve as new telegon, avoided network the situation of paralysis to occur, avoided all equipment all to re-execute the Network finding flow process, reduced the time delay of network recovery, and can guarantee that to a certain extent the transmission of some business can not interrupt.
The specific embodiment of the invention provides another embodiment, and the present embodiment provides a kind of coordinator recovery method, and the technology scene that the present embodiment is realized is that the PLC equipment of the present embodiment is judged this as the PLC equipment that does not possess the backup coordinator ability; The method comprises the steps: as shown in Figure 3
S31, PLC equipment have judged whether that N continuous beacon period do not receive central beacon, and whether the detection of the beacon in the frame head of all transmission sign all indicates when not detecting central beacon in the network within identical beacon period, in this way, determining then that CCo is unexpected disconnects and again without CCo for subsequent use.
S32, at very first time section t1, PLC equipment receives the Indication message that PLC equipment that other have the backup coordinator ability send; As in very first time section t1, not receiving any Indication message, then judge the PLC equipment that does not have the backup coordinator ability in the power line communication network, PLC equipment sends Indication message to other PLC equipment in the second time period t 2, and receives the Indication message that other PLC equipment send; Such as the Indication message of receiving that in very first time t1 other PLC equipment send, then only need to wait for that new CCo sends beacon, do not do and continue to process.
S33, after the second time period t 2 finishes, PLC equipment judges whether itself is the highest PLC equipment of CCo ability rating from the Indication message that other PLC equipment send, in this way, confirm that this is as new CCo; In this way and other PLC equipment identical with CCo ability rating own are arranged, judge whether itself is the equipment of having found that the website number is maximum, and in this way, affirmation itself becomes new CCo; If found that the website number is also identical, judge whether itself is the PLC equipment of TEI minimum (also can be maximum, but maximum or minimum can only be selected one), in this way, determine that this is as new CCo; Certainly in actual applications, except the size that compares TEI, MAC Address can also be compared, when comparing MAC Address, the PLC filling apparatus of MAC Address minimum (also can be maximum, but maximum or minimum can only be selected) can be got as new CCo.
If S34 determines itself can not become new CCo, then only need to wait for that new CCo sends beacon, do not do and continue to process; If determining itself can become new CCo, then carry out the recovery flow process of CCo.
The method that the present embodiment provides is not specified under the scene of backup coordinator at current telegon, when the situation that telegon goes offline occurring, a kind of method of determining new telegon is provided, can select as soon as possible certain PLC equipment, serve as new telegon, avoided network the situation of paralysis to occur, avoided all equipment all to re-execute the Network finding flow process, reduced the time delay of network recovery, and can guarantee that to a certain extent the transmission of some business can not interrupt.
The specific embodiment of the invention also provides a kind of power line communications apparatus, and this equipment comprises as shown in Figure 4:
Transmitting element 41 disconnects and during again without the CCo for subsequent use of appointment, sends Indication message to other power line communications PLC equipment determining that telegon CCo is unexpected;
Receiving element 42 is used for receiving the Indication message that other PLC equipment send; Described Indication message comprises: the CCo ability, and the Indication message that receives passed to judge performance element 43;
Optionally, above-mentioned Indication message also comprises:
Backup coordinator ability, Terminal Equipment Identifier TEI, MAC Address, message SN, find the number of website.
Optionally, transmitting element 41 is concrete for judging whether itself possesses the backup coordinator ability, in this way, sends Indication messages to other PLC equipment of network in very first time section t1, and described receiving element is used for receiving the Indication message that other PLC equipment send; Described transmitting element specifically is used for, and when judging no and do not receive Indication message in very first time section t1, sends Indication message to other PLC equipment in the second time period t 2, receives the Indication message that other PLC equipment send.
Optionally, judge that performance element 43 is concrete for as receive the Indication message that other PLC equipment send at t1, then determine according to the described Indication message that receives whether itself is the highest PLC equipment of CCo ability rating; In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo; In this way and other PLC equipment identical with CCo ability rating own are arranged, judge whether this is the PLC equipment of having found website number maximum in the identical PLC equipment of CCo ability rating; In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo; In this way and have and itself found the same number of other PLC equipment of website, judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of TEI maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
Optionally, judge the performance element 43 concrete Indication messages that are used for as do not receive other PLC equipment transmissions at t1, then according to determining at the Indication message that receives described in the t2 whether itself is the highest PLC equipment of CCo ability rating; In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo; In this way and other PLC equipment identical with CCo ability rating own are arranged, judge whether this is the PLC equipment of having found that the website number is maximum in the identical PLC equipment of CCo ability rating; In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo; In this way and have and itself found the same number of other PLC equipment of website, judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is maximum PLC equipment in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
The equipment that the specific embodiment of the invention provides is not specified under the scene of backup coordinator at current telegon, when the situation that telegon goes offline occurring, determine new telegon by in network, sending Indication message and receiving the Indication message that other equipment send, avoided network the situation of paralysis to occur, avoided all equipment all to re-execute the Network finding flow process, reduced the time delay of network recovery, and can guarantee that to a certain extent the transmission of some business can not interrupt.
The specific embodiment of the invention provides again a kind of power line communications apparatus, and this equipment comprises: reflector, receiver and processor;
Reflector disconnects and during again without the CCo for subsequent use of appointment, sends Indication message to other power line communications PLC equipment determining that telegon CCo is unexpected;
Receiver is used for receiving the Indication message that other PLC equipment send; Described Indication message comprises: the CCo ability, and the Indication message that receives passed to processor;
Processor is used for judging according to the Indication message that described other PLC equipment send whether itself can become new CCo, in this way, carries out the recovery flow process of CCo.
Optionally, above-mentioned Indication message also comprises:
Backup coordinator ability, Terminal Equipment Identifier TEI, MAC Address, message SN, find the website number.
Optionally, reflector specifically is used for judging whether itself possesses the backup coordinator ability, in this way, sends Indication message to other PLC equipment of network in very first time section t1, and described receiving element is used for receiving the Indication message that other PLC equipment send; Described transmitting element specifically is used for, and when judging no and do not receive Indication message in very first time section t1, sends Indication message to other PLC equipment in the second time period t 2, receives the Indication message that other PLC equipment send.
Optionally, above-mentioned preparation implement body is used for as receives the Indication message that other PLC equipment send at t1, then determines according to the described Indication message that receives whether itself is the highest PLC equipment of CCo ability rating; In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo; In this way and other PLC equipment identical with CCo ability rating own are arranged, judge whether this is the PLC equipment of having found website number maximum in the identical PLC equipment of CCo ability rating; In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo; In this way and have and itself found the same number of other PLC equipment of website, judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of TEI maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
Optionally, above-mentioned preparation implement body is used for as does not receive the Indication message that other PLC equipment send at t1, then according to determining at the Indication message that receives described in the t2 whether itself is the highest PLC equipment of CCo ability rating; In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo; In this way and other PLC equipment identical with CCo ability rating own are arranged, judge whether this is the PLC equipment of having found that the website number is maximum in the identical PLC equipment of CCo ability rating; In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo; In this way and have and itself found the same number of other PLC equipment of website, judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is maximum PLC equipment in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
The equipment that the specific embodiment of the invention provides is not specified under the scene of backup coordinator at current telegon, when the situation that telegon goes offline occurring, determine new telegon by in network, sending Indication message and receiving the Indication message that other equipment send, avoided network the situation of paralysis to occur, avoided all equipment all to re-execute the Network finding flow process, reduced the time delay of network recovery, and can guarantee that to a certain extent the transmission of some business can not interrupt.
In said units and the system embodiment, included modules or unit are just divided according to function logic, but are not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional module also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
It will be understood by those skilled in the art that all or part of step of technical scheme that the embodiment of the invention provides is to finish by the relevant hardware of program command.Such as finishing by the computer run journey.This program can be stored in read/write memory medium, for example, and random asccess memory, disk, CD etc.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a coordinator recovery method is characterized in that, described method comprises:
Power line communication PLC equipment is determined that central coordinator CCo is unexpected and is disconnected and during again without the CCo for subsequent use of appointment, PLC equipment sends Indication message to other PLC equipment, receives the Indication message that other PLC equipment send; Described Indication message comprises: the CCo ability;
PLC equipment judges according to the Indication message that described other PLC equipment send whether itself can become new CCo, in this way, carries out the recovery flow process of CCo.
2. method according to claim 1 is characterized in that, described Indication message also comprises:
Backup coordinator ability, Terminal Equipment Identifier TEI, MAC Address or found the number of website.
3. method according to claim 1 is characterized in that, determines to disconnect and be specially without the method for CCo for subsequent use again CCo is unexpected:
Whether PLC equipment judges the time of not receiving central beacon greater than time threshold, in this way, then determines in the unexpected disconnection of CCo and again without CCo for subsequent use.
4. method according to claim 1 is characterized in that, described PLC equipment sends Indication message to other PLC equipment, and the Indication message that receives other PLC equipment transmissions specifically comprises:
Described PLC equipment judges whether itself possesses the backup coordinator ability, in this way, sends Indication message to other PLC equipment of network in very first time section t1, receives the Indication message that other PLC equipment send; As not no and do not receive Indication message in very first time section t1, PLC equipment sends Indication message to other PLC equipment in the second time period t 2, receives the Indication message that other PLC equipment send.
5. method according to claim 4 is characterized in that, described PLC equipment judges that according to the Indication message that described other PLC equipment send the implementation method that itself whether can become new CCo is specially:
The Indication message of described PLC equipment as receiving that in t1 other PLC equipment send then determines according to the described Indication message that receives whether itself is the highest PLC equipment of CCo ability rating;
In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo;
In this way and other PLC equipment identical with CCo ability rating own are arranged,
Judge whether this is the PLC equipment of having found website number maximum in the identical PLC equipment of CCo ability rating;
In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo;
In this way and have and itself found the same number of other PLC equipment of website,
Judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is the PLC equipment of TEI maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
6. method according to claim 4 is characterized in that, described PLC equipment judges that according to the Indication message that described other PLC equipment send the implementation method that itself whether can become new CCo is specially:
Such as the Indication message of not receiving that in t1 other PLC equipment send, then according to determining at the Indication message that receives described in the t2 whether itself is the highest PLC equipment of CCo ability rating;
In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo;
In this way and other PLC equipment identical with CCo ability rating own are arranged,
Judge whether this is the PLC equipment of having found that the website number is maximum in the identical PLC equipment of CCo ability rating;
In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo;
In this way and have and itself found the same number of other PLC equipment of website,
Judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is maximum PLC equipment in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo;
Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
7. a power line communications apparatus is characterized in that, described equipment comprises:
Transmitting element disconnects and during again without the CCo for subsequent use of appointment, sends Indication message to other power line communications PLC equipment determining that telegon CCo is unexpected;
Receiving element is used for receiving the Indication message that other PLC equipment send; Described Indication message comprises: the CCo ability, and the Indication message that receives passed to the affirmation performance element;
Judge performance element, be used for judging according to the Indication message that described other PLC equipment that receive send whether itself can become new CCo, in this way, carry out the recovery flow process of CCo.
8. equipment according to claim 7 is characterized in that, described Indication message also comprises:
Backup coordinator ability, Terminal Equipment Identifier TEI, MAC Address or found the number of website.
9. equipment according to claim 7, it is characterized in that, described transmitting element specifically is used for judging whether itself possesses the backup coordinator ability, in this way, in very first time section t1, send Indication message to other PLC equipment of network, described receiving element is used for receiving the Indication message that other PLC equipment send; Described transmitting element specifically is used for, and when judging no and do not receive Indication message in very first time section t1, sends Indication message to other PLC equipment in the second time period t 2, receives the Indication message that other PLC equipment send.
10. equipment according to claim 9, it is characterized in that, described judgement performance element specifically is used for as receives the Indication message that other PLC equipment send at t1, then determines according to the described Indication message that receives whether itself is the highest PLC equipment of CCo ability rating; In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo; In this way and other PLC equipment identical with CCo ability rating own are arranged, judge whether this is the PLC equipment of having found website number maximum in the identical PLC equipment of CCo ability rating; In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo; In this way and have and itself found the same number of other PLC equipment of website, judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of TEI maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
11. equipment according to claim 9, it is characterized in that, described judgement performance element specifically is used for as does not receive the Indication message that other PLC equipment send at t1, then according to determining at the Indication message that receives described in the t2 whether itself is the highest PLC equipment of CCo ability rating; In this way and other PLC equipment identical with CCo ability rating own do not determine that then this is as new CCo; In this way and other PLC equipment identical with CCo ability rating own are arranged, judge whether this is the PLC equipment of having found that the website number is maximum in the identical PLC equipment of CCo ability rating; In this way and and itself found the same number of other PLC equipment of website, do not determine that then this is as new CCo; In this way and have and itself found the same number of other PLC equipment of website, judge whether this is the PLC equipment of TEI minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is maximum PLC equipment in finding the PLC equipment that website is the same number of and the CCo ability rating is identical; In this way, determine that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address maximum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo; Or judge whether this is the PLC equipment of MAC Address minimum in finding the PLC equipment that website is the same number of and the CCo ability rating is identical, in this way, confirm that this is as new CCo.
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| CN201210360834.4A CN102882557B (en) | 2012-09-25 | 2012-09-25 | Coordinator recovery method and power line communication equipment |
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| CN201210360834.4A CN102882557B (en) | 2012-09-25 | 2012-09-25 | Coordinator recovery method and power line communication equipment |
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