CN102868538B - Charge system, charge node and charging method - Google Patents
Charge system, charge node and charging method Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of charge system, charge node and charging method.This charge system includes: the first charge node and the second charge node；Wherein, the only second charge node opens gateway function, the first charge node and the second charge node composition wireless mesh network, and is communicated by wireless mesh network；Second charge node is connected to remote-wireless communication network by remote-wireless communication link.First charge node is for sending the first session message by wireless mesh network to the second charge node；Second charge node is for receiving the first session message by wireless mesh network, and sends the second session message by wireless mesh network to the first charge node.This way, it is not necessary to arrange a remote-wireless communication link for each charge node, therefore greatly reduce required communication cost.
Description
Technical field
The present invention relates to billing technology, particularly to a kind of charge system, charge node and charging method.
Background technology
Parking fare register is a kind of device for charging the vehicle being parked in certain region according to its storage period.Generally, parking fare register needs to be connected to certain server (such as administrative center or bank settlement server) by Internet, by communicating with these servers, carries out state report, credit card operation etc..
Fig. 1 is the structural representation of a kind of existing parking charge network.As it is shown in figure 1, this parking charge network includes: charge node 101, GPRS network 102 and accounting server 103.Wherein, each charge node 101 is all communicated with accounting server 103 by GPRS network.
As seen from Figure 1, in existing parking charge network, each parking fare register is required for by remote-wireless link, i.e. GPRS link is connected to accounting server 103.In this network structure, owing to each parking fare register is required for a single GPRS link, therefore communication cost is higher.And, each parking fare register is responsible for the billing operation in certain fixed area, and service coverage is limited.
Summary of the invention
In view of this, a kind of charge system of offer, charge node and charging method are provided, the communication cost of charging process can be reduced, and expand the coverage of charge system.
For reaching object above, the technical scheme is that and be achieved in that:
The embodiment of the present invention provides a kind of charge node, is applied to parking charge system, it is possible to forms wireless mesh network with other charge node, and is communicated by wireless mesh network.This charge node includes:
Path calculation module, for when described charge node is active, according to session message, determines the next-hop node of described charge node in described wireless mesh network；With
Sending module, for sending the next-hop node determined to described path calculation module by described session message.
In one embodiment of the present invention, charge node also includes:
Condition judgment module, is used for judging the state in which of this charge node own, and the state of the next-hop node determined according to the condition adjudgement path calculation module described in charge node；Wherein, sending module, according to the judged result of condition judgment module, sends described session message when the state of next-hop node is state of activation.
In one embodiment of the present invention, charge node also includes: receiver module and/or session setup module；
Wherein, receiver module is for when charge node is active, and the upper hop node of the described charge node from described wireless mesh network receives described session message；
Session setup module is for when described charge node needs to initiate new session, trigger described charge node and enter interim state of activation, and trigger described path calculation module and calculate the next-hop node of described charge node, and trigger described sending module and send the request of interim state of activation and session message corresponding to described new session to described next-hop node；
Wherein, the interim state of activation of charge node entrance is: charge node is constantly in state of activation.
In one embodiment of the present invention, receiver module is additionally operable to when charge node is active, the upper hop node of this charge node from wireless mesh network receives the request of interim state of activation, and after receiving the request of interim state of activation, triggering this charge node interim state of activation of entrance, then receiver module receives this session message when this charge node is in interim state of activation；
Path calculation module, is additionally operable to ask according to described interim state of activation, calculates next-hop node；And
Sending module, is additionally operable to be forwarded to the request of described interim state of activation the next-hop node of the described charge node that described path calculation module determines.
In one embodiment of the present invention, receiver module is additionally operable to receive the response message of some this session message returned of down hop of this charge node.
In one embodiment of the present invention, receiver module is additionally operable to receive the interim state of activation confirmation message of the next-hop node feedback of described charge node；
When described receiver module does not the most receive the interim state of activation confirmation message of described next-hop node, sending module is additionally operable to resend the request of described interim state of activation to described next-hop node；When receiving the request of described interim state of activation at described receiver module (801), described sending module is additionally operable to the upper hop node feeding back interim state of activation confirmation message to described charge node.
In one embodiment of the present invention, charge node also includes: active session table preserves module, is used for preserving active session table, wherein, the quantity of all sessions being active through described charge node of described active session table record；When described receiver module receives the request of described interim state of activation, perform to add 1 operation to the quantity of the session being active in described active session table；When described receiver module receives end session request, the quantity of the session being active in described active session table is performed to subtract 1 operation, when the quantity of the session being active in described active session table is 0, triggers described charge node and leave described interim state of activation and keep synchronized sleep with other charge node in described wireless mesh network.
In one embodiment of the present invention, charge node also includes: timer module, including one or more intervalometers, corresponds respectively to each session in active session table；Described receiver module is additionally operable to, and when receiving the session message relevant to described session, is reset by the intervalometer corresponding with described session；Described active session table preserves module and is additionally operable to, when the timing of intervalometer arrives, and the quantity of the session being active in described active session table is performed to subtract 1 operation.
The embodiment of the present invention proposes a kind of charge node, is applied to parking charge system, and the gateway function of this charge node is in opening state, it is possible to forms wireless mesh network with other charge node, and is communicated by described wireless mesh network；Wherein, this charge node is connected to remote-wireless communication network by remote-wireless communication link, and this charge node includes:
Sending module, for being sent to the accounting server in remote-wireless communication network by a session message by remote-wireless communication link.
In one embodiment of the present invention, this charge node also includes: receiver module and/or session setup module；
Wherein, described receiver module is for when described charge node is active, and the upper hop node of the described charge node from described wireless mesh network receives described session message；
Described session setup module is for when described charge node needs to initiate new session, triggering described sending module and by remote-wireless communication link, the session message corresponding with this new session is sent to the accounting server in remote-wireless communication network.
In one embodiment of the present invention, the upper hop node of the described charge node that described receiver module is additionally operable to from described wireless mesh network receives the request of interim state of activation, and after receiving the request of described interim state of activation, triggering the described charge node interim state of activation of entrance, it is that described charge node is constantly in state of activation that wherein said charge node enters interim state of activation；
Described sending module is additionally operable to, after described receiver module receives the request of described interim state of activation, by remote-wireless communication link, described session message is sent to the accounting server in remote-wireless communication network；
Described session setup module is additionally operable to when described charge node needs to initiate new session, triggers described charge node and immediately enters described interim state of activation, and sends the session message corresponding with described new session after described charge node enters interim state of activation.
In one embodiment of the present invention, this charge node also includes: active session table preserves module, is used for preserving active session table, wherein, the quantity of all sessions being active through described charge node of described active session table record；When described receiver module receives the request of described interim state of activation, perform to add 1 operation to the quantity of the session being active in described active session table；When described receiver module receives end session request, the quantity of the session being active in described active session table is performed to subtract 1 operation, when the quantity of the session being active in described active session table is 0, triggers described charge node and leave described interim state of activation and keep synchronized sleep with other charge node in described wireless mesh network.
In one embodiment of the present invention, this charge node also includes: timer module, including one or more intervalometers, corresponds respectively to each session in described active session table；Described receiver module is additionally operable to, and when receiving the session message relevant to described session, is reset by the intervalometer corresponding with described session；Described active session table preserves module and is additionally operable to, when the timing of an intervalometer arrives, and the quantity of the session being active in described active session table is performed to subtract 1 operation.
The embodiment of the present invention provides a kind of charge system.This charge system includes: the first charge node and the second charge node；Wherein, the only second charge node opens gateway function, the first charge node and the second charge node composition wireless mesh network, and is communicated by wireless mesh network；Second charge node is connected to remote-wireless communication network by remote-wireless communication link.Wherein,
Described first charge node is for sending the first session message by described wireless mesh network to described second charge node；
Described second charge node is for receiving described first session message by described wireless mesh network, and sends the second session message by described wireless mesh network to described first charge node.
The embodiment of the present invention provides a kind of charging method, it is applied to include in the charge system of the first charge node and the second charge node, wherein the first charge node and the second charge node are formed wireless mesh network and are communicated by described wireless mesh network, and only the second charge node (is opened gateway function, is connected to remote-wireless communication network by remote-wireless communication link.This charging method includes:
Described first charge node sends, to described second charge node, the first session message that charging is relevant by described wireless mesh network；
Described second charge node receives, by described wireless mesh network, the described first session message that described first charge node sends, and sends the second session message by described wireless mesh network to described first charge node.
In one embodiment of the present invention, this charging method also includes: described first session message is sent to the accounting server in described distance cordless communication network by described distance wireless communication link by described second charge node, and receives described second session message by described distance wireless communication link from described distance cordless communication network.
In one embodiment of the present invention, the first charge node and the second charge node are respectively provided with two kinds of duties: sleep state and state of activation；And the time that described first charge node and described second charge node enter sleep state and state of activation is to synchronize.
In one embodiment of the present invention, the first charge node and the second charge node are respectively provided with three kinds of duties: sleep state, state of activation and interim state of activation；
In one embodiment of the present invention, this charging method also includes:
Described first charge node sends interim state of activation by described wireless mesh network and asks described second charge node, and enters interim state of activation；
Described second charge node receives the request of described interim state of activation, and enters described interim state of activation；
Wherein, interim state of activation is entered for being constantly in state of activation.
In one embodiment of the present invention, the first charge node sends interim state of activation by described wireless mesh network asks described second charge node to include:
The upper hop node of first charge node described first charge node from described wireless mesh network receives the request of interim state of activation, and enters interim state of activation after receiving the request of described interim state of activation；And
First charge node is asked according to described interim state of activation, calculates the next-hop node of described first charge node in described wireless mesh network, and the request of described interim state of activation is forwarded to described next-hop node, until arriving described second charge node；Wherein, the first session message that described first charge node sends charging relevant by described wireless mesh network to described second charge node includes:
First charge node sends described first session message to described next-hop node when entering described interim state of activation, until arriving described second charge node.
In one embodiment of the present invention, the first charge node sends interim state of activation by described wireless mesh network asks described second charge node also to include:
First charge node is to described upper hop node feeding back interim state of activation confirmation message, and receives the interim state of activation confirmation message of described next-hop node feedback；
Wherein, the first session message that described first charge node sends charging relevant by described wireless mesh network to described second charge node includes:
First charge node, when receiving the interim state of activation confirmation message of described next-hop node feedback, sends described first session message to described next-hop node, until arriving described second charge node.
This shows, in the parking charge system of the embodiment of the present invention, by arranging the first charge node and the second charge node, and they are formed wireless mesh network, only second charge node needs to be connected to remote-wireless communication network by remote-wireless communication link, thus realize communicating with accounting server, and the first charge node only needs to be realized and other first charge node and the communication of the second charge node by in-plant wireless mesh network.This way, it is not necessary to arrange a remote-wireless communication link for each charge node, therefore greatly reduce required communication cost.It is additionally, since multiple first charge node to be communicated by mesh network, improves the coverage of charge system.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of existing parking charge network.
Fig. 2 is the structural representation of a kind of parking charge system of the embodiment of the present invention.
Fig. 3 is the state transition diagram of charge node in first embodiment of the invention.
Fig. 4 is the charging procedure schematic diagram of charge node in first embodiment of the invention.
Fig. 5 is the structural representation of the first charge node in first embodiment of the invention.
Fig. 6 is the state transition diagram of charge node in second embodiment of the invention.
Fig. 7 is the charging procedure schematic diagram of charge node in second embodiment of the invention.
Fig. 8 is the structural representation of the first charge node in second embodiment of the invention.
Fig. 9 is the structural representation of the second charge node in second embodiment of the invention.
Detailed description of the invention
In order to make the goal of the invention of the present invention, technical scheme and advantage clearer, below in conjunction with the drawings and specific embodiments, parking charge system and the device of the present invention are described in detail.
Fig. 2 is the structural representation of a kind of parking charge system of the embodiment of the present invention.As in figure 2 it is shown, this parking charge system includes: the first charge node 201 and the second charge node 202, wherein the first charge node 201 is the charge node not opening gateway function, and the second charge node 202 is the charge node having opened gateway function.Wherein, form wireless mesh network between the first charge node 201 and the second charge node 202, and communicated by this wireless mesh network；Second charge node 202 is connected to remote-wireless communication network, such as GPRS network by remote-wireless communication link.As shown in Figure 2, the parking charge system of the embodiment of the present invention can include multiple first charge node 201, multiple second charge node 202 can also be included, form wireless mesh network between all first charge node 201 and all second charge node 202 in parking charge system, and communicated by this wireless mesh network.
Concrete, the first charge node 201 is for being sent to the second charge node 202 by wireless mesh network by the first session message.Second charge node 202 is for receiving this first session message by wireless mesh network, and sends the second session message by wireless mesh network to the first charge node 201.In one embodiment of the present invention, first session message can be sent to the second charge node 202 via the first charge node of other in wireless mesh network 201 by the first charge node 201, it is also possible to the first session message is sent to the second charge node 202 being joined directly together with the first charge node 201.
This shows, in the parking charge system that the present invention provides, by arranging the second charge node and the first charge node, and they are formed wireless mesh network, only second charge node needs to be connected to remote-wireless communication network by remote-wireless communication link, thus realize communicating with accounting server, and the first charge node only needs to be realized and other first charge node and the communication of the second charge node by in-plant wireless mesh network.This way, it is not necessary to arrange a remote-wireless communication link for each charge node, therefore greatly reduce required communication cost.It is additionally, since multiple first charge node to be communicated by mesh network, improves the coverage of parking charge system.
Wherein, the first charge node and the second charge node can be formed wireless mesh network according to prior art by those skilled in the art, and concrete dispositions method does not repeats them here.Wherein, the first charge node 201 and the second charge node 202 are the physical entity in mesh network respectively, or can be the logic entities in wireless mesh network.
The charging shutdown system provided the present invention below by specific embodiment is described in detail.
Embodiment one
Owing to charge node is the equipment of energy constraint, it usually needs battery-powered or solar recharging.Therefore, in order to extend the use time of charge node, it is to avoid the cisco unity malfunction owing to electricity is not enough, when not having this charge node of user operation or charge node not to have session to need to process, charge node enters the part work of sleep state, i.e. halt circuit and assembly, in order to save energy.Meanwhile, in order to ensure the proper communication of the wireless mesh network being made up of charge node, all charge node (including the first charge node and the second charge node) needs carry out the sleep synchronized.The method of the sleep realizing synchronization has a lot, such as can set a synchronised clock, this synchronised clock control each charge node and enter resting state at identical time point and enter state of activation in the identical time.
Fig. 3 is the state transition diagram of charge node in first embodiment of the invention.Wherein, this charge node can be the first charge node shown in Fig. 2, it is also possible to be the second charge node shown in Fig. 2.Concrete, this charge node has two kinds of duties: sleep state (sleepingstate) and state of activation (wakingstate).Charge node is transferring to state of activation from sleep state through the length of one's sleep after T1, and is transferring to sleep state from state of activation after activationary time T2.Therefore, foregoing all charge node need sleep and the activation carrying out synchronizing, it is meant that all charge node entrance dormant time is to synchronize, and the T1 and the activationary time T2 length of one's sleep of all charge node is identical.
The charging process of the parking charge system to first embodiment of the invention of illustrating below is described.Fig. 4 is the charging procedure schematic diagram of charge node in first embodiment of the invention.It is assumed that charge node A and charge node B are two the first charge node in the parking charge system shown in Fig. 2, charge node C is second charge node in the parking charge system shown in Fig. 2.Further, charge node B is the next-hop node that charge node A determines according to routing algorithm, and charge node C is the next-hop node that charge node B determines according to routing algorithm.Here, charge node A and charge node B can calculate its next-hop node according to routing algorithm existing in wireless mesh network.Which kind of routing algorithm is the present invention use be not construed as limiting to concrete.Further, since charge node C is the second charge node, it is connected to remote-wireless communication network by remote-wireless communication link.Therefore, charge node C is after receiving session message, it is not necessary to calculates next-hop node, and only needs the session message according to receiving to carry out respective handling.
First, as shown in Figure 4, when charge node A needs to initiate new session (for example, it is desired to initiating bank settlement request), if now charge node A is in sleep state, then charge node A needs by the time that it enters after state of activation and could initiate this new session.If now charge node A is in state of activation, then charge node A can initiate this new session immediately.
Concrete, the process that charge node A initiates new session is as follows: first, if charge node A is active, then be synchronized sleep due to each charge node, thus may determine that its next-hop node charge node B state in which is also state of activation.Owing to charge node B is currently at state of activation, charge node A can send the first session message (such as, bank settlement request message) to charge node B.When charge node A is in sleep state, then charge node A may determine that charge node B is currently also at sleep state, then charge node A needs self and charge node B by the time to retransmit the first session message to node B after entering state of activation.
Here, need certain time owing to charge node A calculates the process of its next-hop node (i.e. charge node B), and the process that charge node A sends the first session message is also required to the regular hour.Therefore, charge node B receives the moment that moment of the first session message initiates new session relative to charge node A and has certain delay (representing with gray area in the diagram).
Same, charge node B is after receiving the first session message, first according to its next-hop node charge node C state in which of condition adjudgement of self.When charge node C is currently at state of activation, then the first session message is sent to charge node C by charge node B.If it is judged that charge node C is currently in sleep state, then charge node B needs charge node C by the time to retransmit the first session message to charge node C after entering state of activation.In like manner, charge node C receives the moment that moment of the first session message receives the first session message relative to charge node B and there is also certain delay (representing with gray area in the diagram).
After receiving the first session message, charge node C passes through remote-wireless communication network, such as GPRS network, and the first session message is sent to accounting server.
After accounting server carries out respective handling according to this first session message, feed back the second session message (such as, bank settlement result message) to charge node C by GPRS network.Then, the second session message is sent to its upper hop node charge node B by wireless mesh network by charge node C.This second session message is sent to its upper hop node charge node A by wireless mesh network by charge node B again.Detailed process is similar with the process of above-mentioned transmission the first session message, does not repeats them here.
Fig. 5 is the structural representation of the first charge node in first embodiment of the invention.As it is shown in figure 5, this first charge node 201 includes: path calculation module 502 and sending module 503.Wherein,
Path calculation module 502, for when the first charge node 201 is active, according to session message, determines the next-hop node of this first charge node 201 in wireless mesh network；
Sending module 503 for sending the next-hop node determined to path calculation module 502 by this session message.
According to one embodiment of the present invention, first charge node 201 also includes: condition judgment module 504, for judging this state in which of the first charge node 201 own, and judge the state of next-hop node determined by path calculation module 502 according to the first charge node 201 state in which, wherein sending module 503 is when the state of next-hop node is state of activation, it will words message delivers to next-hop node.
According to one embodiment of the present invention, the first charge node 201 also includes: receiver module 501 and/or session setup module 505；Wherein, receiver module 501, for when the first charge node 201 is active, receives described session message from upper hop node；Session setup module 505 is for when described first charge node 201 needs to initiate new session, if condition judgment module 504 judges that this first charge node 201 is in state of activation, then trigger described path calculation module 502 and calculate next-hop node, and trigger the next-hop node that sending module 503 determines to path calculation module 502 and send the session message corresponding with this new session.It addition, receiver module 501 is additionally operable to receive the response message corresponding with this session message from the next-hop node of the first charge node 201.
For the second charge node 202, its concrete structure is similar with the first charge node 201 shown in Fig. 5.Differ only in, the second charge node 202 does not include the path calculation module shown in Fig. 5.Owing to the second charge node 202 is the final jump node in wireless mesh network, session message is directly sent to accounting server by remote-wireless communication link by it, therefore need not calculate next-hop node.
It addition, for the second charge node 202, the function of its session setup module is slightly different with the first charge node 201.Concrete, the session setup module of the second charge node 202 is used for, when the second charge node 202 needs to initiate new session, if condition judgment module judges that this second charge node 202 is in state of activation, then trigger sending module and send session message by remote-wireless communication link.It addition, receiver module is additionally operable to receive the response message corresponding with session message from remote-wireless communication link, and triggers sending module this response message is returned to the first charge node of initiation session message.According to one embodiment of the present invention, when the second charge node 202 is joined directly together with the first charge node initiating session message, then response message is directly directly returned to initiate the first charge node of session message by sending module；When also having other the first charge node between the second charge node 202 and the first charge node initiating session message, then response message is returned to initiate the first charge node of session message by sending module from the second charge node 202 hop-by-hop.
Be can be seen that by the above embodiments, by arranging the first charge node 201 and the second charge node 202, and they are formed wireless mesh network, only second charge node 202 needs to be connected to remote-wireless communication network by remote-wireless communication link, thus realize communicating with accounting server, and the first charge node 201 only needs to be realized and other the first charge node 201 and communications of the second charge node 202 by in-plant wireless mesh network.This way, it is not necessary to arrange a remote-wireless communication link for each charge node, therefore greatly reduce required communication cost.It is additionally, since multiple first charge node 201 to be communicated by mesh network, improves the coverage of parking charge system.
Embodiment two
The present embodiment proposes a kind of technical scheme, in this technical scheme, the time delay during Dialog processing is more shorter than the technical scheme shown in Fig. 4, particularly with in the banking of delay sensitive, shorter time delay can avoid user operation failure, thus brings preferably experience to user.
In the present embodiment, a kind of state, i.e. interim state of activation (temporaryactivestate) are added for charge node.After charge node enters interim state of activation, charge node is always maintained at state of activation.Fig. 6 is the state transition diagram of charge node in second embodiment of the invention.As shown in Figure 6, in the present embodiment, it is provided with three kinds of states, i.e. state of activation, sleep state and interim state of activation for charge node.Wherein, this charge node can be the first charge node shown in Fig. 2, it is also possible to be the second charge node shown in Fig. 2.Charge node is transferring to state of activation from sleep state through the length of one's sleep after T1, is transferring to sleep state from state of activation after activationary time T2, enters into interim state of activation when receiving the request of interim state of activation.The request of this interim state of activation can be a particular message, it is also possible to carry in first message of a certain session.Wherein k represents the enumerator of the session being active.
The charging procedure of the parking charge system to second embodiment of the invention of illustrating below is described.Fig. 7 is the charging procedure schematic diagram of charge node in the embodiment of the present invention.Assuming that charge node A and charge node B are two the first charge node in the parking charge system shown in Fig. 2, charge node C is second charge node in the parking charge system shown in Fig. 2.Further, charge node B is the next-hop node that charge node A determines according to routing algorithm, and charge node C is the next-hop node that charge node B determines according to routing algorithm.Here, charge node A and charge node B can calculate next-hop node according to existing routing algorithm in wireless mesh network.Which kind of routing algorithm is the present invention use be not construed as limiting to concrete.Further, since charge node C is the second charge node, it is connected to remote-wireless communication network by remote-wireless communication link.Therefore, charge node C is after receiving session message, it is not necessary to calculates next-hop node, and only needs the session message according to receiving to carry out respective handling.
It is different from first embodiment, in a second embodiment, when node A needs to initiate new session (such as bank settlement request), no matter it is in sleep state or state of activation, and node A sends interim state of activation immediately and asks to its next-hop node charge node B.Meanwhile, charge node A is switched to interim state of activation from sleep state or state of activation.Such that make charge node A be currently at sleep state also need not just initiate new session until entering next state of activation, it is to avoid the delay from the moment to the node A actual moment initiating this new session needing initiation new session shown in Fig. 4.
As a example by credit card business, when user needs to initiate credit card calculating business in charge node A, owing to this business is the business needing to process in real time, need to reduce the delay of session as far as possible.According to the sleep in first embodiment and state of activation processing method, in charge node A, when B and C is all in state of activation, charge node A sends a settlement request (i.e. conversation request) to server through charge node B and charge node C, and when server returns authentication information (conversational response), charge node A, B and C may come into sleep state, the most then need to wait A between charge node, B and C just can make charge node A receive this authentication information after entering state of activation, and charge node A also to transmit other data further to server after receiving authentication information, the most at this moment charge node A, B and C is likely to and enters sleep state, need to wait that they could send other data to server when entering again state of activation.It is to say, during a credit card business, needing session interaction repeatedly, and repeatedly can be likely to encounter repeatedly sleep state during session interaction, therefore completing a credit card business needs to take a long time, and has relatively long delay.
And if use the sleep of second embodiment of the invention and activation processing method, increase an interim state of activation, then can be substantially reduced time delay.For the relevant charge node involved by a business, after it enters interim state of activation, then it is constantly in duty, until this service ending.Such as, in credit card business, assume user to need in charge node A and initiate credit card calculating business, when charging A is active, then charge node A sends the request of temporarily activating (can also simultaneously send session message) immediately to charge node B on the way and C, and charge node A, B and C the most on the way enter interim state of activation；Under interim state of activation, charge node A, B and C relevant to this credit card business are always maintained at state of activation, until this credit card business completes.Therefore, in a business procedure, charge node on the way will not toggle between sleep and state of activation, thus has substantially reduced the time of a business operation.When charge node A is now in resting state, the CPU within charge node A can detect a real time business, is credit card business in the present embodiment, then CPU triggers charge node A and enters interim state of activation.Charge node A being in interim state of activation sends interim activation request to charge node B on the way and C.And owing to charge node A, B and C are to synchronize dormancy, therefore charge node B and C are the most actually also in dormant, therefore charge node A cannot receive the confirmation of charge node B, then can wait and send interim state of activation request (can also send session message simultaneously or wait that charge node B feedback can retransmit session message after confirmation message) to charge node B again when the activation moments of charge node A arrives；Charge node B, after charge node A receives the request of interim state of activation, enters interim state of activation, and sends this interim state of activation and ask to down hop charge node C；Charge node C is also into interim state of activation；Then charge node A, B and C the most on the way enters interim state of activation, the follow-up session message (such as settlement request etc.) that can send in real time is to server, and can receive the information (such as authentication information etc.) of server feedback in real time, thus the time delay being greatly reduced in the processing procedure of credit card business.
Specifically, the delay of the present embodiment mainly includes with lower part.As it is shown in fig. 7, similar with first embodiment, owing to the process of charge node A calculating next-hop node needs certain time, and the process that charge node A sends the request of interim state of activation is also required to the regular hour (representing in the figure 7) with gray area.Therefore, charge node B receives moment of interim state of activation request and judges to need the moment initiating new session to still suffer from certain delay relative to node A.But this delay postponing to enter next state of activation relative to wait charge node A shown in Fig. 4 is the least.
The charging procedure of charge node in the embodiment of the present invention is described in detail below with reference to Fig. 7.
If charge node A is currently at sleep state, when CPU within charge node A has detected a real time business, then CPU triggers charge node A and enters interim state of activation, thus the interim state of activation of charge node A transmission being in interim state of activation is asked to charge node B.And due to synchronized sleep, charge node B is also in sleep state, then node B cannot receive the request of this interim state of activation.Therefore, in order to ensure that next-hop node can be successfully received the interim state of activation request that upper hop node sends, next-hop node, after receiving the interim state of activation request that upper hop node sends, needs upper hop node feeding back confirmation message.So, when charge node A does not the most receive the confirmation message of charge node B feedback, charge node A waits until that charge node B resends interim state of activation again after entering state of activation and asks to charge node B.
If charge node A is currently at state of activation, then when the CPU within charge node A has detected a real time business, CPU triggers charge node A and enters interim state of activation, and the interim state of activation of charge node A transmission is asked to charge node B simultaneously.And due to synchronized sleep, now charge node B is also in state of activation, then charge node B can be properly received the request of this interim state of activation.Charge node B, after receiving the request of interim state of activation, to charge node A feedback acknowledgment message, determines its next-hop node charge node C, the request of interim state of activation is transmitted to charge node C, and simultaneously enters the interim state of activation shown in Fig. 6.Here, the detailed process that charge node B sends the request of interim state of activation to charge node C is similar with the process that above-mentioned charge node A sends the request of interim state of activation to charge node B, does not repeats them here.Same, charge node C receives the moment that moment of interim state of activation request receives the request of interim state of activation relative to charge node B and there is also certain delay.
After receiving the request of interim state of activation, owing to charge node C is the final jump node in wireless mesh network, therefore charge node C no longer forwards this interim state of activation to ask, but is directly entered interim state of activation.
So, charge node A the subsequent packet of the new session initiated can be transmitted by the path being made up of charge node A, node B and node C in wireless mesh network.Further, the now all nodes on path, including charge node A, charge node B and charge node C, all stopped sleep and enter interim state of activation.It can thus be avoided during session is carried out, the time delay brought owing to charge node enters periodic sleep state.It is to say, interim state of activation is a kind of special state of the periodic synchronous sleep mechanism of each charge node, it is not controlled by periodic synchronous sleep mechanism but is decided whether to enter this state by the new session that whether there is a need to process in real time.
Charge node A can retransmit session message (such as, bank settlement request message) to charge node B while sending the request of interim state of activation or after the confirmation message receiving charge node B feedback.Charge node B is also adopted by identical mode and forwards this session message to charge node C.This session message, after receiving this session message, is sent to accounting server by GPRS network by charge node C.In a preferred embodiment, when charge node A is currently at state of activation, the request of interim state of activation and session message can be sent simultaneously, and when charge node A is currently at sleep state, then after the confirmation message receiving charge node B feedback, retransmit session message.So, each node may ensure that its next-hop node is activated, and down hop node sends session message, thus sends session message while determining next-hop node state, saves the time of Business Processing further, reduces time delay.In another embodiment, charge node C can will confirm that message feeds back to charge node A after receiving the request of interim state of activation, is i.e. sent to charge node B, and is sent to charge node A by charge node B.Now determine that all chargings joint on the way all enters interim state of activation, and start to send session message to accounting server.This method can allow session setup end confirm the most all nodes all in retransmiting session message after interim state of activation, such that it is able to reduce session message retransmission rate.But, this method can cause the waiting time sending session message longer, and the time delay of Business Processing can be bigger.
Accounting server receives session message, after carrying out respective handling according to this session message, feeds back another session message (such as, bank settlement result) to charge node C by GPRS network.Then, this session message is sent to its upper hop node charge node B by wireless mesh network by charge node C.This session message is sent to its upper hop node charge node A by wireless mesh network by charge node B again.When accounting server receives session message, all charge node on the way have come into interim state of activation, therefore accounting server is during charge node A feeds back another session message, in addition to the forwarding operation of each node can bring certain time-delay, almost without other time delay.Therefore business procession real-time further increases.
At the end of charging procedure, conversation end process can be initiated by charge node A or charge node C.Initiate to illustrate as a example by this conversation end process by charge node A below.Charge node A sends conversation end message by wireless mesh network to charge node B, leaves the interim state of activation shown in Fig. 6, and keeps synchronized sleep with other charge node in wireless mesh network.After receiving this conversation end message, this conversation end message is sent to charge node C by charge node B.Same, charge node B is also left interim state of activation and keeps synchronized sleep with other charge node in wireless mesh network.Charge node C, after receiving this conversation end message, no longer forwards this message, the most also leaves interim state of activation and keeps synchronized sleep with other charge node in wireless mesh network.Wherein, from interim state of activation be switched to other charge node keep synchronized sleep can time controlled by unified system clock, such as when charge node A sends conversation end message to charge node B, receive the signal of system clock simultaneously, when the signal of system clock is for entering sleep state in the moment 1, then charge node A waits the moment 1 and enters sleep state when the moment 1 arrives.In like manner, when charge node B receives conversation end message, receive the signal of system clock simultaneously, when the signal of system clock is for entering sleep state in the moment 1, then charge node A enters sleep state when the moment 1 arrives, the like, charge node on the way can enter sleep state in the moment 1 simultaneously, it is achieved synchronized sleep.
Additionally, due to each charge node in wireless mesh network may carry multiple session.Such as, the session through node A may have session 1, session 2 ..., session N.In order to avoid node A leaves interim state of activation due to one of them conversation end, now, node A needs to safeguard an active session table.This active session table record has all sessions being active through node A.When the quantity of the session being active that node A only records in active session table is 0, just leaves interim state of activation and keep synchronized sleep with other charge node in wireless mesh network.See Fig. 6, k and represent the quantity of the session being active through node A.When node A receives a new interim state of activation request, k adds 1.When node A receives a conversation end request, k subtracts 1.When node A judges k=0, when i.e. the quantity through the session being active of node A is 0, leave interim state of activation.
It is caused to terminate failure further, since some session is likely to be due to a variety of causes.Now, the charge node in order to avoid thus causing is constantly in interim state of activation.The present embodiment is also provided with a corresponding intervalometer for each session.If before timer expiry, node A have received the session message of certain session corresponding, then to should the intervalometer of session reset, restart timing.If when certain intervalometer timing arrives, charge node never receives the session message of correspondence, it is determined that to should the conversation end of intervalometer, perform the k operation that subtracts 1.So, charge node will not be constantly in interim state of activation, such that it is able to avoid wasting the energy content of battery due to certain conversation end failure.
For the charging procedure of above second embodiment, below the structure of the first charge node in the second embodiment and the second charge node is specifically described.
Fig. 8 is the structural representation of a kind of first charge node in second embodiment of the invention.As shown in Figure 8, this first charge node includes: path calculation module 802 and sending module 803, and these modules, in addition to having the function shown in Fig. 5, also have following function.
Path calculation module 802 is additionally operable to ask according to interim state of activation, calculates the next-hop node of the first charge node in wireless mesh network；
Sending module 803 is additionally operable to the request of interim state of activation is sent the next-hop node determined to path calculation module 802.
According to one embodiment of the present invention, receiver module 801 can be also used for receiving the interim state of activation confirmation message of the next-hop node feedback of the first charge node in wireless mesh network.Sending module 803 is additionally operable to when receiver module 801 receives the interim state of activation request that upper hop node sends, and in wireless mesh network, the upper hop node of the first charge node sends interim state of activation confirmation message.
Further, since this first charge node is when its next-hop node sends the request of interim state of activation, its next-hop node may be in sleep state.Now, sending module 803 is further used for, and when receiver module 801 does not the most receive the confirmation message of next-hop node, when described charge node enters state of activation, down hop node resends the request of interim state of activation.
Additionally, this first charge node farther includes: receiver module 801 and/or session setup module 804；Wherein,
Receiver module 801, for when the first charge node is active, from wireless mesh network, the upper hop node of the first charge node receives the request of interim state of activation, and triggers this first charge node interim state of activation of entrance when receiving the request of interim state of activation；
Session setup module 804, for when described first charge node needs to initiate new session, trigger this first charge node and enter interim state of activation, and trigger path calculation module 802 and calculate the next-hop node of the first charge node in wireless mesh network, trigger sending module 803 down hop node and send the request of interim state of activation and session message corresponding to described new session.
This first charge node farther includes:
Active session table preserves module 805, is used for preserving active session table.Wherein, active session table comprises the quantity of all sessions being active through this first charge node；When receiver module 801 receives the request of interim state of activation, perform to add 1 operation to the quantity of the session being active in active session table；When receiver module 801 receives end session request, the quantity of the session being active in active session table is performed to subtract 1 operation.
This first charge node farther includes:
Timer module 806, comprises one or more intervalometer, corresponds respectively to each session in active session table；When receiver module 801 receives the session message relevant to certain session, the intervalometer corresponding with this session is cleared.When the timing of intervalometer arrives, operation that the quantity of the active session table preservation module 805 session to being active in active session table performs to subtract 1.
Now, active session table preserves module 805 and is further used for, judge in its active session table preserved, whether the quantity of the session being active of record is 0, if it is, this first charge node is left interim state of activation and keeps synchronized sleep with other charge node in wireless mesh network；Otherwise, described interim state of activation is kept.
Fig. 9 is the structural representation of the second charge node in second embodiment of the invention.As it is shown in figure 9, this second charge node includes: sending module 902；Can also include: receiver module 901, session setup module 903, active session table preserve module 904 and timer module 905.Owing to the second charge node is the final jump node in wireless mesh network, so being made without path computing.Receiver module 901 shown in Fig. 9, sending module 902 and session setup module 903, in addition to having the function of the second charge node in first embodiment, also include some new functions.It is of course also possible to separately design respective receiver module 901, sending module 902 and session setup module 903 for first embodiment and the second embodiment.The second charge node in first embodiment and the second embodiment illustrates as a example by sharing receiver module 901, sending module 902 and session setup module 903 below.
Receiver module 901 is additionally operable to receive the request of interim state of activation from upper hop node, and triggers this second charge node interim state of activation of entrance.Owing to the second charge node is the final jump node in mesh network, so the second charge node is after receiving the request of interim state of activation, no longer forwards this interim state of activation to ask, but be directly entered interim state of activation.Additionally, receiver module 901 is additionally operable to receive session message from upper hop node, and this session message is sent to sending module 902.
Sending module 902 is additionally operable to after receiver module receives the request of interim state of activation, the upper hop node feeding back confirmation message of the second charge node in wireless mesh network, and after receiver module receives the session message of upper hop node transmission of the second charge node, this session message is sent by remote-wireless communication network, such as GPRS network.
Session setup module 903 is for when the second charge node needs to initiate new session, trigger this second charge node and immediately enter interim state of activation, and trigger sending module 902 session message corresponding for new session is sent to the accounting server in remote-wireless communication network by remote-wireless communication link.
Additionally, the function of other modules in this second charge node (including that active session table preserves module 904 and timer module 905) is identical with the function of the corresponding module shown in Fig. 8 respectively, do not repeat them here.
By above second embodiment it can be seen that owing to being provided with interim state of activation for the charge node in parking charge system, the delay brought owing to charge node enters sleep state during session is carried out can be avoided.In this manner it is ensured that the Successful Operation that bank settlement etc. are to the business of delay sensitive.Being additionally, since the reduction of time delay, Consumer's Experience have also been obtained improvement.
Present invention also offers a kind of machine-readable storage medium, storage performs the instruction of charging method as described herein for making a machine.Specifically, system or the device being furnished with storage medium can be provided, store on the storage medium and realize the software program code of the function of any embodiment in above-described embodiment, and make the computer (or CPU or MPU) of this system or device read and perform the program code being stored in storage medium.
In this case, the program code itself read from storage medium can realize the function of any one embodiment above-described embodiment, and therefore the storage medium of program code and storage program code constitutes the part of the present invention.
For providing the storage medium embodiment of program code to include floppy disk, hard disk, magneto-optic disk, CD (such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), tape, Nonvolatile memory card and ROM.Selectively, can be by communication network download program code from server computer.
In addition, it is noted that, not only by the program code performed read-out by computer, and the operating system etc. of calculating hands-operation can be made to complete practical operation partly or completely by instruction based on program code, thus realize the function of any one embodiment in above-described embodiment.
In addition, it is understandable that, the program code read by storage medium is write in memorizer set in the expansion board inserted in computer or write in the memorizer arranged in the expanding element being connected with computer, the instruction being subsequently based on program code makes the CPU etc. being arranged on expansion board or expanding element come executable portion and whole practical operation, thus realizes the function of any embodiment in above-described embodiment.
The embodiment of the invention discloses a kind of charge system, charge node and charging method.This charge system includes: the first charge node and the second charge node；Wherein, the only second charge node opens gateway function, the first charge node and the second charge node composition wireless mesh network, and is communicated by wireless mesh network；Second charge node is connected to remote-wireless communication network by remote-wireless communication link.First charge node is for sending the first session message by wireless mesh network to the second charge node；Second charge node is for receiving the first session message by wireless mesh network, and sends the second session message by wireless mesh network to the first charge node.This way, it is not necessary to arrange a remote-wireless communication link for each charge node, therefore greatly reduce required communication cost.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (15)
1. a charge node, is applied to parking charge system, it is possible to forms wireless mesh network with other charge node, and is communicated by described wireless mesh network；Described charge node includes:
Path calculation module (502,802), for when described charge node is active, according to session message, determines the next-hop node of described charge node in described wireless mesh network；
Sending module (503,803), for sending the next-hop node determined to described path calculation module (502) by described session message；
Receiver module (501,801), for when described charge node is active, the upper hop node of the described charge node from described wireless mesh network receives described session message；
Session setup module (804), for when described charge node needs to initiate new session, trigger described charge node and enter interim state of activation, and trigger described path calculation module (802) and calculate the next-hop node of described charge node, and trigger described sending module (803) and send the request of interim state of activation and session message corresponding to described new session to described next-hop node；
Wherein said charge node enters interim state of activation: described charge node is constantly in state of activation.
Charge node the most according to claim 1, wherein, described charge node also includes:
Condition judgment module (504), is used for judging the state in which of this charge node own, and the state of the next-hop node determined according to the condition adjudgement path calculation module (502,802) described in charge node；
Wherein, described sending module (503,803), according to the judged result of described condition judgment module (504), sends described session message when the state of next-hop node is state of activation.
Charge node the most according to claim 1, wherein, described receiver module (801), it is additionally operable to when described charge node is active, the upper hop node of the described charge node from described wireless mesh network receives the request of interim state of activation, and after receiving the request of described interim state of activation, triggering the described charge node interim state of activation of entrance, the most described receiver module (801) receives described session message when described charge node is in interim state of activation；
Path calculation module (802), is additionally operable to ask according to described interim state of activation, calculates next-hop node；And
Sending module (803), is additionally operable to be forwarded to the request of described interim state of activation the next-hop node of the described charge node that described path calculation module determines.
Charge node the most according to claim 3, wherein, described receiver module (801) is additionally operable to receive the interim state of activation confirmation message of the next-hop node feedback of described charge node；
When described receiver module (801) does not the most receive the interim state of activation confirmation message of described next-hop node, described sending module (803) is additionally operable to resend the request of described interim state of activation to described next-hop node；When receiving the request of described interim state of activation at described receiver module (801), described sending module (803) is additionally operable to the upper hop node feeding back interim state of activation confirmation message to described charge node.
Charge node the most according to claim 1, wherein, farther include: active session table preserves module (805), is used for preserving active session table, wherein, the quantity of all sessions being active through described charge node of described active session table record；When described receiver module (801) receives the request of described interim state of activation, perform to add 1 operation to the quantity of the session being active in described active session table；When described receiver module (801) receives end session request, the quantity of the session being active in described active session table is performed to subtract 1 operation, when the quantity of the session being active in described active session table is 0, triggers described charge node and leave described interim state of activation and keep synchronized sleep with other charge node in described wireless mesh network.
Charge node the most according to claim 5, wherein, also includes: timer module (806), including one or more intervalometers, corresponds respectively to each session in active session table；Described receiver module (801) is additionally operable to, and when receiving the session message relevant to described session, is reset by the intervalometer corresponding with described session；Described active session table preserves module (805) and is additionally operable to, when the timing of intervalometer arrives, and the quantity of the session being active in described active session table is performed to subtract 1 operation.
7. a charge node, is applied to parking charge system, and the gateway function of this charge node is in opening state, it is possible to forms wireless mesh network with other charge node, and is communicated by described wireless mesh network；Wherein, described charge node (202) is connected to remote-wireless communication network by remote-wireless communication link；Described charge node (202) including:
Sending module (902), for being sent to the accounting server in remote-wireless communication network by session message by remote-wireless communication link；
Receiver module (901), for when described charge node is active, the upper hop node of the described charge node from described wireless mesh network receives described session message；
Session setup module (903), for when described charge node (202) needs to initiate new session, triggering described sending module (902) and the session message corresponding with this new session be sent to the accounting server in remote-wireless communication network by remote-wireless communication link；
The upper hop node of the described charge node that described receiver module (901) is additionally operable to from described wireless mesh network receives the request of interim state of activation, and after receiving the request of described interim state of activation, trigger described charge node (202) enter interim state of activation, it is that described charge node is constantly in state of activation that wherein said charge node enters interim state of activation；
Described sending module (902) is additionally operable to, after described receiver module (901) receives the request of described interim state of activation, by remote-wireless communication link, described session message is sent to the accounting server in remote-wireless communication network；
Described session setup module (903) is additionally operable to when described charge node (202) needs to initiate new session, trigger described charge node (202) and immediately enter described interim state of activation, and after described charge node (202) enters interim state of activation, send the session message corresponding with described new session.
Charge node the most according to claim 7, wherein, also includes: active session table preserves module, is used for preserving active session table, wherein, the quantity of all sessions being active through described charge node of described active session table record；When described receiver module receives the request of described interim state of activation, perform to add 1 operation to the quantity of the session being active in described active session table；When described receiver module receives end session request, the quantity of the session being active in described active session table is performed to subtract 1 operation, when the quantity of the session being active in described active session table is 0, triggers described charge node and leave described interim state of activation and keep synchronized sleep with other charge node in described wireless mesh network.
Require the charge node described in 8 the most as requested, wherein, also include: timer module, including one or more intervalometers, correspond respectively to each session in described active session table；Described receiver module is additionally operable to, and when receiving the session message relevant to described session, is reset by the intervalometer corresponding with described session；Described active session table preserves module and is additionally operable to, when the timing of an intervalometer arrives, and the quantity of the session being active in described active session table is performed to subtract 1 operation.
10. a charge system, wherein, this charge system includes: according to the first charge node according to any one of claim 1-6 and the second charge node described in any one of claim 7-9；Wherein, the most described second charge node opens gateway function, the first charge node and the second charge node composition wireless mesh network, and is communicated by described wireless mesh network；Described second charge node is connected to remote-wireless communication network by remote-wireless communication link；
Described first charge node is for sending the first session message by described wireless mesh network to described second charge node；
Described second charge node is for receiving described first session message by described wireless mesh network, and sends the second session message by described wireless mesh network to described first charge node.
11. 1 kinds of charging methods, it is applied to include in the charge system of the first charge node (201) and the second charge node (202), wherein said first charge node (201) and the second charge node (202) are formed wireless mesh network and are communicated by described wireless mesh network, and the most described second charge node (202) opens gateway function, it is connected to remote-wireless communication network by remote-wireless communication link；Wherein, this charging method includes:
Described first charge node (201) sends, to described second charge node (202), the first session message that charging is relevant by described wireless mesh network；
Described second charge node (202) receives, by described wireless mesh network, the described first session message that described first charge node (201) sends, and sends the second session message by described wireless mesh network to described first charge node (201)；
Wherein, described first charge node (201) and described second charge node (202) are respectively provided with three kinds of duties: sleep state, state of activation and interim state of activation；
Described charging method also includes:
Described first charge node (201) sends interim state of activation by described wireless mesh network and asks described second charge node (202), and enters interim state of activation；
Described second charge node (202) receives the request of described interim state of activation, and enters described interim state of activation；
The interim state of activation of wherein said entrance is for being constantly in state of activation.
12. charging methods according to claim 11, also include: described first session message is sent to the accounting server in described remote-wireless communication network by described remote-wireless communication link by described second charge node (202), and receives described second session message by described remote-wireless communication link from described remote-wireless communication network.
13. charging methods according to claim 11, wherein, the time that described first charge node and described second charge node enter sleep state and state of activation is to synchronize.
14. charging methods according to claim 11, wherein, described first charge node (201) sends interim state of activation by described wireless mesh network asks described second charge node (202) to include:
The upper hop node of described first charge node (201) described first charge node (201) from described wireless mesh network receives the request of interim state of activation, and enters interim state of activation after receiving the request of described interim state of activation；And
Described first charge node (201) is asked according to described interim state of activation, calculate the next-hop node of described first charge node (201) in described wireless mesh network, and the request of described interim state of activation is forwarded to described next-hop node, until arrive described second charge node (202)；Wherein, the first session message that described first charge node (201) sends charging relevant by described wireless mesh network to described second charge node (202) includes:
Described first charge node (201) sends described first session message to described next-hop node when entering described interim state of activation, until arriving described second charge node (202).
15. charging methods according to claim 14, wherein, described first charge node (201) sends interim state of activation by described wireless mesh network asks described second charge node (202) also to include:
Described first charge node (201) is to described upper hop node feeding back interim state of activation confirmation message, and receives the interim state of activation confirmation message of described next-hop node feedback；
Wherein, the first session message that described first charge node (201) sends charging relevant by described wireless mesh network to described second charge node (202) includes:
Described first charge node (201), when receiving the interim state of activation confirmation message of described next-hop node feedback, sends described first session message to described next-hop node, until arriving described second charge node (202).
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