CN102868538A - Charging system, charging node and charging method - Google Patents
Charging system, charging node and charging method Download PDFInfo
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- CN102868538A CN102868538A CN201110190400XA CN201110190400A CN102868538A CN 102868538 A CN102868538 A CN 102868538A CN 201110190400X A CN201110190400X A CN 201110190400XA CN 201110190400 A CN201110190400 A CN 201110190400A CN 102868538 A CN102868538 A CN 102868538A
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Abstract
The invention discloses a charging system, a charging node and a charging method. The charging system comprises a first charging node and a second charging node, wherein only the second charging node has a gateway function, the first charging node and the second charging node form a wireless mesh network, and the communication is conducted through the wireless mesh network, the second charging node is connected to a remote wireless communication network through a remote wireless communication link, the first charging node is used for transmitting a first conversation message to the second charging node through the wireless mesh network, and the second charging node is used for receiving the first conversation message through the wireless mesh network and transmitting a second conversation message to the first charging node through the wireless mesh network. In this way, one remote wireless communication link does not need to be arranged on each charging node, so that the communication expense required can be greatly reduced.
Description
Technical field
The present invention relates to billing technology, particularly a kind of charge system, charge node and charging method.
Background technology
Parking fare register is a kind of device for charging according to its storage period to being parked in certain regional vehicle.Usually, parking fare register need to be connected to certain server (for example administrative center or bank settlement server) by Internet, by communicating with these servers, carries out status report, credit card operation etc.
Fig. 1 is a kind of structural representation of existing parking charge network.As shown in Figure 1, this parking charge network comprises: charge node 101, GPRS network 102 and accounting server 103.Wherein, each charge node 101 is all communicated by letter with accounting server 103 by GPRS network.
As seen from Figure 1, in existing parking charge network, each parking fare register needs by the remote-wireless link, and namely the GPRS link is connected to accounting server 103.In this network configuration, because each parking fare register needs an independent GPRS link, so 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, main purpose of the present invention is to provide a kind of charge system, and charge node and charging method can reduce the communication cost of charging process, and enlarges the coverage of charge system.
For reaching above purpose, technical scheme of the present invention is achieved in that
The embodiment of the invention provides a kind of charge node, is applied to the parking charge system, can form wireless mesh network with other charge node, and communicate by wireless mesh network.This charge node comprises:
Path calculation module is used for according to the session message, determining the next-hop node of the described charge node in the described wireless mesh network when described charge node is in state of activation; With
Sending module is used for described session message is sent to the next-hop node that described path calculation module is determined.
In one embodiment of the present invention, charge node also comprises:
Condition judgment module is used for judging the residing state of this charge node itself, and the state of judging the next-hop node that path calculation module is determined according to the described state of charge node; Wherein, sending module sends described session message according to the judged result of condition judgment module when the state of next-hop node is state of activation.
In one embodiment of the present invention, charge node also comprises: receiver module and/or session setup module;
Wherein, receiver module is used for when charge node is in state of activation, and the upper hop node of the described charge node from described wireless mesh network receives described session message;
The session setup module is used for when described charge node need to be initiated new session, trigger described charge node and enter interim state of activation, and trigger the next-hop node that described path calculation module calculates described charge node, and trigger described sending module and send interim state of activation request and session message corresponding to described new session to described next-hop node;
Wherein, charge node enters interim state of activation and is: charge node is in state of activation always.
In one embodiment of the present invention, receiver module also is used for when charge node is in state of activation, the upper hop node of this charge node from wireless mesh network receives interim state of activation request, and this charge node of triggering enters interim state of activation after receiving interim state of activation request, and then receiver module receives this session message when this charge node is in interim state of activation;
Path calculation module also is used for according to described interim state of activation request, calculates next-hop node; And
Sending module is also for the next-hop node that described interim state of activation request is forwarded to the definite described charge node of described path calculation module.
In one embodiment of the present invention, receiver module also be used for to receive the response message of this session the message what time down hop of this charge node return.
In one embodiment of the present invention, the interim state of activation confirmation message that receiver module also feeds back for the next-hop node that receives described charge node;
When described receiver module was not received the interim state of activation confirmation message of described next-hop node in the given time, sending module also was used for resending described interim state of activation request to described next-hop node; When described receiver module (801) receives described interim state of activation request, described sending module also is used for feeding back interim state of activation confirmation message to the upper hop node of described charge node.
In one embodiment of the present invention, charge node also comprises: the active session table is preserved module, is used for preserving the active session table, wherein, and all quantity through the session that is in state of activation of described charge node of described active session table record; When described receiver module receives described interim state of activation request, the quantity of the session that is in state of activation in the described active session table carried out add 1 operation; When described receiver module receives end session request, the quantity of the session that is in state of activation in the described active session table carried out subtract 1 operation, when the quantity that is in the session of state of activation in the 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 the described wireless mesh network.
In one embodiment of the present invention, charge node also comprises: timer module, comprise one or more timers, and correspond respectively to each session in the active session table; Described receiver module also is used for, when receiving the session message relevant with described session, and timer zero clearing that will be corresponding with described session; Described active session table is preserved module and also is used for, and when the timing of timer arrives, the quantity of the session that is in state of activation in the described active session table carried out subtracts 1 operation.
The embodiment of the invention has proposed a kind of charge node, is applied to the parking charge system, and the gateway function of this charge node is in opening state, can form wireless mesh network with other charge node, and communicate by described wireless mesh network; Wherein, this charge node is connected to the remote-wireless communication network by the remote-wireless communication link, and this charge node comprises:
Sending module is for the accounting server that a session message is sent to the remote-wireless communication network by the remote-wireless communication link.
In one embodiment of the present invention, this charge node also comprises: receiver module and/or session setup module;
Wherein, described receiver module is used for when described charge node is in state of activation, and the upper hop node of the described charge node from described wireless mesh network receives described session message;
Described session setup module is used for when described charge node need to be initiated new session, triggers session message that described sending module will be corresponding with this new session and sends to accounting server in the remote-wireless communication network by the remote-wireless communication link.
In one embodiment of the present invention, described receiver module also is used for receiving interim state of activation request from the upper hop node of the described charge node of described wireless mesh network, and the described charge node of triggering enters interim state of activation after receiving described interim state of activation request, and it is that described charge node is in state of activation always that wherein said charge node enters interim state of activation;
Described sending module also is used for after described receiver module receives described interim state of activation request, and described session message is sent to accounting server in the remote-wireless communication network by the remote-wireless communication link;
Described session setup module also is used for when described charge node need to be initiated new session, trigger described charge node and enter immediately described interim state of activation, and after described charge node enters interim state of activation, send the session message corresponding with described new session.
In one embodiment of the present invention, this charge node also comprises: the active session table is preserved module, is used for preserving the active session table, wherein, and all quantity through the session that is in state of activation of described charge node of described active session table record; When described receiver module receives described interim state of activation request, the quantity of the session that is in state of activation in the described active session table carried out add 1 operation; When described receiver module receives end session request, the quantity of the session that is in state of activation in the described active session table carried out subtract 1 operation, when the quantity that is in the session of state of activation in the 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 the described wireless mesh network.
In one embodiment of the present invention, this charge node also comprises: timer module, comprise one or more timers, and correspond respectively to each session in the described active session table; Described receiver module also is used for, when receiving the session message relevant with described session, and timer zero clearing that will be corresponding with described session; Described active session table is preserved module and also is used for, and when the timing of a timer arrives, the quantity of the session that is in state of activation in the described active session table carried out subtracts 1 operation.
The embodiment of the invention provides a kind of charge system.This charge system comprises: the first charge node and the second charge node; Wherein, only the second charge node is opened gateway function, and the first charge node and the second charge node form wireless mesh network, and communicates by wireless mesh network; The second charge node is connected to the remote-wireless communication network by the remote-wireless communication link.Wherein,
Described the first charge node is used for sending the first session message by described wireless mesh network to described the second charge node;
Described the second charge node is used for receiving described the first session message by described wireless mesh network, and sends the second session message by described wireless mesh network to described the first charge node.
The embodiment of the invention provides a kind of charging method, be applied to comprise in the charge system of the first charge node and the second charge node, wherein the first charge node and the second charge node form wireless mesh network and communicate by described wireless mesh network, and only there is the second charge node (to open gateway function, be connected to the remote-wireless communication network by the remote-wireless communication link.This charging method comprises:
Described the first charge node sends the first relevant session message of charging by described wireless mesh network to described the second charge node;
Described the second charge node receives described the first session message that described the first charge node sends by described wireless mesh network, and sends the second session message by described wireless mesh network to described the first charge node.
In one embodiment of the present invention, this charging method also comprises: described the second charge node sends to accounting server in the described long distance wireless communication network by described long distance wireless communication link with described the first session message, and receives described the second session message by described long distance wireless communication link from described long distance wireless communication network.
In one embodiment of the present invention, the first charge node and the second charge node have respectively two kinds of operating states: sleep state and state of activation; And the time that described the first charge node and described the second charge node enter sleep state and state of activation is synchronous.
In one embodiment of the present invention, the first charge node and the second charge node have respectively three kinds of operating states: sleep state, state of activation and interim state of activation;
In one embodiment of the present invention, this charging method also comprises:
Described the first charge node sends interim state of activation request to described the second charge node by described wireless mesh network, and enters interim state of activation;
Described the second charge node receives described interim state of activation request, and enters described interim state of activation;
Wherein, enter interim state of activation for be in state of activation always.
In one embodiment of the present invention, the first charge node sends interim state of activation request by described wireless mesh network and comprises to described the second charge node:
The upper hop node of described first charge node of the first charge node from described wireless mesh network receives interim state of activation request, and enters interim state of activation after receiving described interim state of activation request; And
The first charge node is according to described interim state of activation request, calculate the next-hop node of described the first charge node in the described wireless mesh network, and described interim state of activation request is forwarded to described next-hop node, until arrive described the second charge node; Wherein, described the first charge node comprises to the first relevant session message of described the second charge node transmission charging by described wireless mesh network:
The first charge node sends described the first session message to described next-hop node when entering described interim state of activation, until arrive described the second charge node.
In one embodiment of the present invention, the first charge node sends interim state of activation request by described wireless mesh network and also comprises to described the second charge node:
The first charge node is fed back interim state of activation confirmation message to described upper hop node, and the interim state of activation confirmation message that receives described next-hop node feedback;
Wherein, described the first charge node comprises to the first relevant session message of described the second charge node transmission charging by described wireless mesh network:
The first charge node sends described the first session message to described next-hop node, until arrive described the second charge node when receiving the interim state of activation confirmation message of described next-hop node feedback.
This shows, in the parking charge system of the embodiment of the invention, by the first charge node and the second charge node are set, and with they composition wireless mesh networks, only have the second charge node to be connected to the remote-wireless communication network by the remote-wireless communication link, thereby realize communicating with accounting server, and the first charge node only needs to realize and the communicating by letter of other first charge node and the second charge node by in-plant wireless mesh network.Like this, needn't a remote-wireless communication link be set for each charge node, therefore greatly reduce required communication cost.And, because a plurality of the first charge node communicate by the mesh network, improved the coverage of charge system.
Description of drawings
Fig. 1 is a kind of structural representation of existing parking charge network.
Fig. 2 is the structural representation of a kind of parking charge system of the embodiment of the invention.
Fig. 3 is the state transition diagram of charge node in the first embodiment of the invention.
Fig. 4 is the charging processing procedure schematic diagram of charge node in the first embodiment of the invention.
Fig. 5 is the structural representation of the first charge node in the first embodiment of the invention.
Fig. 6 is the state transition diagram of charge node in the second embodiment of the invention.
Fig. 7 is the charging processing procedure schematic diagram of charge node in the second embodiment of the invention.
Fig. 8 is the structural representation of the first charge node in the second embodiment of the invention.
Fig. 9 is the structural representation of the second charge node in the second embodiment of the invention.
Embodiment
In order to make 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 of the present invention and device are described in detail.
Fig. 2 is the structural representation of a kind of parking charge system of the embodiment of the invention.As shown in Figure 2, this parking charge system comprises: the first charge node 201 and the second charge node 202, and wherein the first charge node 201 is the charge node of not opening gateway function, and the second charge node 202 is for having opened the charge node of gateway function.Wherein, form wireless mesh network between the first charge node 201 and the second charge node 202, and communicate by this wireless mesh network; The second charge node 202 is connected to remote-wireless communication network, for example GPRS network by the remote-wireless communication link.As shown in Figure 2, the parking charge system of the embodiment of the invention can comprise a plurality of the first charge node 201, also can comprise a plurality of the second charge node 202, form wireless mesh network between all first charge node 201 in the parking charge system and all the second charge node 202, and communicate by this wireless mesh network.
Concrete, the first charge node 201 is used for by wireless mesh network the first session message being sent to the second charge node 202.The second charge node 202 is used 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, the first charge node 201 can send to the second charge node 202 with the first session message via other first charge node 201 in the wireless mesh network, also the first session message can be sent to the second charge node 202 that directly links to each other with the first charge node 201.
This shows, in parking charge provided by the invention system, by the second charge node and the first charge node are set, and with they composition wireless mesh networks, only have the second charge node to be connected to the remote-wireless communication network by the remote-wireless communication link, thereby realize communicating with accounting server, and the first charge node only needs to realize and the communicating by letter of other first charge node and the second charge node by in-plant wireless mesh network.Like this, needn't a remote-wireless communication link be set for each charge node, therefore greatly reduce required communication cost.And, because a plurality of the first charge node communicate by the mesh network, improved the coverage of parking charge system.
Wherein, those skilled in the art can form wireless mesh network with the first charge node and the second charge node according to prior art, and concrete dispositions method does not repeat them here.Wherein, the first charge node 201 and the second charge node 202 are respectively the physical entities in the mesh network, perhaps can be the logic entities in the wireless mesh network.
Below by specific embodiment charging shutdown system provided by the invention is described in detail.
Embodiment one
Because charge node is the equipment of energy constraint, usually needs battery-powered or solar recharging.Therefore, in order to prolong the service time of charge node, avoid owing to the electric weight deficiency and cisco unity malfunction, when not having the user to operate this charge node or charge node not have session to process, charge node enters sleep state, be the some work of halt circuit and assembly, in order to save energy.Simultaneously, for the proper communication of the wireless mesh network that guarantees to be comprised of charge node, all charge node (comprising the first charge node and the second charge node) need to be carried out synchronous sleep.The method that realizes synchronous sleep has a lot, such as setting a synchronised clock, controls each charge node by this synchronised clock and enters resting state and enter state of activation at same time at the same time point.
Fig. 3 is the state transition diagram of charge node in the first embodiment of the invention.Wherein, this charge node can be the first charge node shown in Figure 2, also can be the second charge node shown in Figure 2.Concrete, this charge node has two kinds of operating states: sleep state (sleeping state) and state of activation (waking state).Charge node is transferred to state of activation from sleep state behind the T1 in process the length of one's sleep, and transfers to sleep state from state of activation after through activationary time T2.Therefore, foregoing all charge node need to be carried out synchronous sleep and activation, mean that it is synchronous that all charge node enter the dormant time, and the T1 length of one's sleep of all charge node are identical with activationary time T2.
The below is described the charging process of the parking charge system of first embodiment of the invention for example.Fig. 4 is the charging processing procedure schematic diagram of charge node in the first embodiment of the invention.As shown in Figure 4, suppose that charge node A and charge node B are two the first charge node in the parking charge system shown in Figure 2, charge node C is second charge node in the parking charge system shown in Figure 2.And 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 existing routing algorithm in the wireless mesh network.The present invention to which kind of routing algorithm of concrete employing is not construed as limiting.In addition, because charge node C is the second charge node, it is connected to the remote-wireless communication network by the remote-wireless communication link.Therefore, charge node C does not need to calculate next-hop node after receiving the session message, gets final product and only need to carry out respective handling according to the session message that receives.
At first, as shown in Figure 4, when charge node A need to initiate new session (for example, need to initiate the bank settlement request), if this moment, charge node A was in sleep state, then charge node A need to wait until after it enters state of activation and could initiate this new session.If this moment, charge node A was 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: at first, if charge node A is in state of activation, then because each charge node is synchronized sleep, therefore can determine its next-hop node---and the residing state of charge node B also is state of activation.Because the current state of activation that is in of charge node B, charge node A can send the first session message (for example, bank settlement request message) to charge node B.When charge node A was in sleep state, then charge node A can determine the current sleep state that also is in of charge node B, and then charge node A need to wait until after self and charge node B enter state of activation and send the first session message to Node B again.
Here, because charge node A calculates the process need certain hour of its next-hop node (being charge node B), and the process that charge node A sends the first session message also needs the regular hour.Therefore, charge node B moment of receiving the first session message has certain delay (representing with gray area) with respect to the moment that charge node A initiates new session in Fig. 4.
Same, charge node B at first judges its next-hop node according to the state of self after receiving the first session message---the residing state of charge node C.When the current state of activation that is in of charge node C, then charge node B sends to charge node C with the first session message.If judge the current sleep state that is in of charge node C, then charge node B need to wait until after charge node C enters state of activation and send the first session message to charge node C again.In like manner, also there is certain delay (representing with gray area) in charge node C moment of receiving the first session message with respect to the moment that charge node B receives the first session message in Fig. 4.
After receiving the first session message, charge node C is by the remote-wireless communication network, and for example GPRS network sends to accounting server with the first session message.
After accounting server carries out respective handling according to this first session message, feed back the second session message (for example, bank settlement as a result message) to charge node C by GPRS network.Then, charge node C sends to its upper hop node---charge node B by wireless mesh network with the second session message.Charge node B sends to its upper hop node---charge node A by wireless mesh network with this second session message again.The process of detailed process and above-mentioned transmission the first session message is similar, does not repeat them here.
Fig. 5 is the structural representation of the first charge node in the first embodiment of the invention.As shown in Figure 5, this first charge node 201 comprises: path calculation module 502 and sending module 503.Wherein,
Sending module 503 is used for this session message is sent to the next-hop node that path calculation module 502 is determined.
According to one embodiment of the present invention, the first charge node 201 also comprises: condition judgment module 504, be used for judging this first charge node 201 residing states own, and the state of judging path calculation module 502 determined next-hop nodes according to the first charge node 201 residing states, wherein sending module 503 is delivered to next-hop node with the session message when the state of next-hop node is state of activation.
According to one embodiment of the present invention, the first charge node 201 also comprises: receiver module 501 and/or session setup module 505; Wherein, receiver module 501 is used for receiving described session message from the upper hop node when the first charge node 201 is in state of activation; Session setup module 505 is used for when described the first charge node 201 needs to initiate new session, if condition judgment module 504 is judged this first charge node 201 and is in state of activation, then trigger described path calculation module 502 and calculate next-hop node, and trigger the next-hop node transmission session message corresponding with this new session that sending module 503 is determined to path calculation module 502.In addition, receiver module 501 also is used for receiving 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 and the first charge node 201 shown in Figure 5 are similar.Difference only is, does not comprise path calculation module shown in Figure 5 in the second charge node 202.Because the second charge node 202 is the final jump nodes in the wireless mesh network, it directly sends to accounting server with the session message by the remote-wireless communication link, does not therefore need to calculate next-hop node.
In addition, for the second charge node 202, the function of its session setup module and the first charge node 201 are slightly different.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 judging this second charge node 202, condition judgment module is in state of activation, then trigger sending module and send the session message by the remote-wireless communication link.In addition, receiver module also is used for receiving the response message corresponding with the session message from the remote-wireless communication link, and triggers the first charge node that sending module returns to this response message the initiation session message.According to one embodiment of the present invention, when the second charge node 202 directly linked to each other with the first charge node of initiation session message, then sending module directly directly returned to response message the first charge node of initiation session message; When also having other the first charge node between the first charge node of the second charge node 202 and initiation session message, then sending module returns to response message the first charge node of initiation session message from the second charge node 202 hop-by-hops.
Can find out by the above embodiments, by the first charge node 201 and the second charge node 202 are set, and with they composition wireless mesh networks, only have the second charge node 202 to be connected to the remote-wireless communication network by the remote-wireless communication link, thereby realize communicating with accounting server, and the first charge node 201 only needs to realize and the communicating by letter of other first charge node 201 and the second charge node 202 by in-plant wireless mesh network.Like this, needn't a remote-wireless communication link be set for each charge node, therefore greatly reduce required communication cost.And, because a plurality of the first charge node 201 communicate by the mesh network, improved the coverage of parking charge system.
Embodiment two
Present embodiment proposes a kind of technical scheme, in this technical scheme, the time delay in the Dialog processing process is shorter than technical scheme shown in Figure 4, especially in the banking for delay sensitive, short time delay can be avoided user's operation failure, thereby brings better experience to the user.
In the present embodiment, for charge node has increased a kind of state, i.e. interim state of activation (temporary active state).After charge node entered interim state of activation, charge node kept state of activation always.Fig. 6 is the state transition diagram of charge node in the second embodiment of the invention.As shown in Figure 6, in the present embodiment, for charge node is provided with three kinds of states, i.e. state of activation, sleep state and interim state of activation.Wherein, this charge node can be the first charge node shown in Figure 2, also can be the second charge node shown in Figure 2.Charge node is transferred to sleep state from state of activation through transferring to state of activation from sleep state behind the T1 length of one's sleep after through activationary time T2, enter into interim state of activation when receiving interim state of activation request.This interim state of activation request can be a particular message, also can be carried in first message of a certain session.Wherein k represents to be in the counter of the session of state of activation.
The below is described the charging processing procedure of the parking charge system of second embodiment of the invention for example.Fig. 7 is the charging processing procedure schematic diagram of charge node in the embodiment of the invention.Suppose that charge node A and charge node B are two the first charge node in the parking charge system shown in Figure 2, charge node C is second charge node in the parking charge system shown in Figure 2.And 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 the wireless mesh network.The present invention to which kind of routing algorithm of concrete employing is not construed as limiting.In addition, because charge node C is the second charge node, it is connected to the remote-wireless communication network by the remote-wireless communication link.Therefore, charge node C does not need to calculate next-hop node after receiving the session message, gets final product and only need to carry out respective handling according to the session message that receives.
Be different from the first embodiment, in a second embodiment, when node A need to initiate new session (for example bank settlement request), no matter it was in sleep state or state of activation, and node A sends interim state of activation request immediately to its next-hop node---charge node B.Simultaneously, charge node A switches to interim state of activation from sleep state or state of activation.Like this, even current being in when sleep state also needn't enter next state of activation by the time of charge node A just initiated new session, avoided shown in Figure 4 from needs initiate new session the time be carved into the delay of node A between the actual moment of initiating this new session.
Take credit card business as example, when the user need to when charge node A initiates the credit card computing service, because this business is to need the in real time business of processing, need to dwindle the delay of session as far as possible.According to the sleep among the first embodiment and state of activation processing method, at charge node A, when B and C are in state of activation, charge node A sends clearing requests (being the session 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 enter sleep state, then need to wait for A between charge node this moment, B and C could be so that charge node A receive this authentication information after entering state of activation, and charge node A also will further transmit other data to server after receiving authentication information, charge node A at this moment, B and C have probably entered sleep state again, need to wait for that they could send other data to server when entering state of activation again.That is to say that in credit card business process, need session interaction repeatedly, and repeatedly can probably run into repeatedly sleep state in the session interaction process, therefore finishing a credit card business need to take a long time, and has than long delay.
And if sleep and the activation processing method of employing second embodiment of the invention increase an interim state of activation, then can greatly dwindle time delay.For professional related relevant charge node once, then always in running order after it enters interim state of activation, until service ending this time.For example, in credit card business, suppose that the user need to initiate the credit card computing service at charge node A, when charging A is in state of activation, then charge node A sends immediately interim activation request (also can send simultaneously the session message) and gives on the way charge node B and C, and then on the way charge node A, B and C entered interim state of activation; Under interim state of activation, charge node A, B and the C relevant with this credit card business keep state of activation always, until this time credit card business is finished.Therefore, in business procedure, charge node on the way can not switched between sleep and state of activation back and forth, thereby has greatly shortened the time of finishing a business operation.When charge node A was in resting state at this moment, the CPU of charge node A inside can detect a real time business, was credit card business in the present embodiment, and then CPU triggers charge node A and enters interim state of activation.The charge node A that is in interim state of activation sends interim activation request on the way charge node B and C.And because charge node A, B and C are synchronous dormancy, therefore charge node B and C in fact also be this moment be in dormant, therefore charge node A can't receive the affirmation information of charge node B, and the activation moments that then can wait for charge node A sends interim state of activation request (also can send simultaneously the session message or wait for that charge node B feedback can send the session message behind the confirmation message again) to charge node B when arriving again; Charge node B enters interim state of activation after receiving interim state of activation request from charge node A, and this interim state of activation request of transmission is to down hop charge node C; Charge node C also enters interim state of activation; Then final charge node A, B and C on the way entered interim state of activation, the follow-up session message (such as clearing requests etc.) that can send in real time is to server, and reception server feedack (such as authentication information etc.) in real time, thereby greatly reduce time-delay in the processing procedure of credit card business.
Particularly, the delay of present embodiment mainly comprises following part.As shown in Figure 7, similar with the first embodiment, because charge node A calculates the process need certain hour of next-hop node, and the process that charge node A sends interim state of activation request also needs the regular hour (representing with gray area) in Fig. 7.Therefore, charge node B moment of receiving interim state of activation request is judged the moment that needs to initiate new session with respect to node A and still has certain delay.But this delay is very little with respect to the delay that wait charge node A shown in Figure 4 enters next state of activation.
Describe the charging processing procedure of charge node in the embodiment of the invention in detail below with reference to Fig. 7.
If the current sleep state that is in of charge node A, when the CPU of charge node A inside has detected a real time business, then CPU triggers charge node A and enters interim state of activation, thereby the charge node A that is in interim state of activation sends interim state of activation request to charge node B.And because synchronized sleep, charge node B also is in sleep state, and then Node B can't receive this interim state of activation request.Therefore, can successfully receive the interim state of activation request that the upper hop node sends in order to guarantee next-hop node, next-hop node needs upper hop node feedback acknowledgment message after receiving the interim state of activation request that the upper hop node sends.Like this, when charge node A did not receive the affirmation message of charge node B feedback in the given time, charge node A waited until after charge node B enters state of activation and resends interim state of activation request to charge node B again.
If the current state of activation that is in of charge node A, when then the CPU of charge node A inside had detected a real time business, CPU triggered charge node A and enters interim state of activation, and charge node A sends interim state of activation request to charge node B simultaneously.And because synchronized sleep, this moment, charge node B also was in state of activation, and then charge node B can successfully receive this interim state of activation request.Charge node B to charge node A feedback acknowledgment message, determines its next-hop node---charge node C after receiving interim state of activation request, interim state of activation request is transmitted to charge node C, and enters simultaneously interim state of activation shown in Figure 6.Here, charge node B is similar to the process that charge node B sends interim state of activation request to detailed process and above-mentioned charge node A that charge node C sends interim state of activation request, does not repeat them here.Same, also there is certain delay in the moment that charge node C receives interim state of activation request with respect to the moment that charge node B receives interim state of activation request.
After receiving interim state of activation request, because charge node C is final jump node in the wireless mesh network, so charge node C no longer transmits this interim state of activation request, but directly enters interim state of activation.
The subsequent packet of the new session of being initiated by charge node A like this, can transmit by the path that is comprised of charge node A, Node B and node C in wireless mesh network.And all nodes on the path comprise charge node A, charge node B and charge node C at this moment, have all stopped sleep and have entered interim state of activation.Therefore, can avoid carrying out in the process in session, owing to charge node enters the time delay that periodic sleep state brings.That is to say that interim state of activation is a kind of special state of the periodic synchronous sleep mechanism of each charge node, its be not subjected to the periodic synchronous sleep mechanism control but by whether having the new session that needs to process in real time determine whether entering this state.
Charge node A can be when sending interim state of activation request or receiving the affirmation message of charge node B feedback after send again session message (for example, bank settlement request message) to charge node B.Charge node B also adopts and transmits in a like fashion this session message to charge node C.Charge node C sends to accounting server by GPRS network with this session message after receiving this session message.In a preferred embodiments, when charge node A is current when being in state of activation, can send simultaneously interim state of activation request and session message, and when charge node A is current when being in sleep state, then behind the affirmation message of receiving charge node B feedback, send again the session message.Like this, each node can guarantee that its next-hop node is activated, and down hop node transmission session message, thereby sends the session message in definite next-hop node state, further saves the time of Business Processing, dwindles time delay.In another embodiment, charge node C can feed back to confirmation message charge node A after receiving interim state of activation request, namely sends to charge node B, and sends to charge node A by charge node B.Determine that all charging joints on the way all enter interim state of activation this moment, and begin to send the session message to accounting server.This method can allow the session setup end confirm that all nodes send the session message after all being in interim state of activation more on the way, thereby can reduce the retransmission rate of session message.But it is longer that this method can cause sending stand-by period of session message, and the time-delay meeting of Business Processing is larger.
Accounting server receives the session message, carry out respective handling according to this session message after, feed back another session message (for example, bank settlement result) to charge node C by GPRS network.Then, charge node C sends to its upper hop node---charge node B by wireless mesh network with this session message.Charge node B sends to its upper hop node---charge node A by wireless mesh network with this session message again.When accounting server is received the session message, all charge node have on the way entered interim state of activation, therefore accounting server feeds back to charge node A in the process of another session message, except the forwarding operation of each node can bring the certain time-delay, does not almost have other time-delay.Therefore the business procession real-time has further improved.
When the charging processing procedure finishes, can be by charge node A or charge node C initiation session terminal procedure.The below initiates this conversation end process take charge node A and describes as example.Charge node A sends the conversation end message by wireless mesh network to charge node B, leaves interim state of activation shown in Figure 6, and keeps synchronized sleep with other charge node in the wireless mesh network.After receiving this conversation end message, charge node B sends to charge node C with this conversation end message.Same, charge node B also leaves interim state of activation and keeps synchronized sleep with other charge node in the wireless mesh network.Charge node C no longer transmits this message after receiving this conversation end message, equally also leave interim state of activation and keep synchronized sleep with other charge node in the wireless mesh network.Wherein, from interim state of activation switch to other charge node keep synchronized sleep can the time by unified system clock control, such as when charge node A sends the conversation end message to charge node B, the signal of while receiving system clock, when the signal of system clock for constantly 1 when entering sleep state, then charge node A waits for constantly 1 and constantly 1 entering sleep state when arriving.In like manner, when charge node B receives the conversation end message, the signal of while receiving system clock, when the signal of system clock for constantly 1 when entering sleep state, then charge node A enters sleep state when constantly 1 arrival, the like, charge node on the way can 1 enter sleep state simultaneously constantly, realizes synchronized sleep.
In addition, because each charge node in the wireless mesh network may carry a plurality of sessions.For example, the session of process node A may have session 1, session 2 ..., session N.Owing to one of them conversation end leaves interim state of activation, at this moment, node A need to safeguard an active session table for fear of node A.This active session table record has all through the session that is in state of activation of node A.The quantity of the session that is in state of activation that node A only records in the active session table is 0 o'clock, just leaves interim state of activation and keeps synchronized sleep with other charge node in the wireless mesh network.Referring to Fig. 6, the k representative is through the quantity of the session that is in state of activation of node A.When node A received a new interim state of activation request, k added 1.When node A received a conversation end request, k subtracted 1.When node A judged k=0, namely the quantity of the session that is in state of activation of process node A was 0 o'clock, leaves interim state of activation.
In addition, because some session may be because a variety of causes causes it to finish unsuccessfully.At this moment, be in interim state of activation for fear of the charge node that causes thus always.Present embodiment also is provided with the timer of a correspondence for each session.If before timer expiry, node A has received the session message of corresponding certain session, then to timer zero clearing that should session, restarts timing.If when certain timer timing arrives, charge node is never received corresponding session message, then determines conversation end that should timer is carried out k and subtracted 1 operation.Like this, charge node can not be in interim state of activation owing to certain conversation end failure always, thereby can avoid waste the energy content of battery.
For the charging processing procedure of above the second embodiment, the below specifically describes the structure of the first charge node among the second embodiment and the second charge node.
Fig. 8 is the structural representation of a kind of the first charge node in the second embodiment of the invention.As shown in Figure 8, this first charge node comprises: path calculation module 802 and sending module 803, these modules also have following function except having function shown in Figure 5.
Sending module 803 also is used for interim state of activation request is sent to the next-hop node that path calculation module 802 is determined.
According to one embodiment of the present invention, receiver module 801 can also be used for the interim state of activation confirmation message of the next-hop node feedback of reception wireless mesh network the first charge node.Sending module 803 also is used for when receiver module 801 is received the interim state of activation request that the upper hop node sends, and the upper hop node of the first charge node sends interim state of activation confirmation message in the wireless mesh network.
In addition, when sending interim state of activation request owing to this first charge node to its next-hop node, its next-hop node may be in sleep state.At this moment, sending module 803 is further used for, and when receiver module 801 was not received the affirmation message of next-hop node in the given time, the down hop node resend interim state of activation request when described charge node enters state of activation.
In addition, this first charge node further comprises: receiver module 801 and/or session setup module 804; Wherein,
This first charge node further comprises:
The active session table is preserved module 805, is used for preserving the active session table.Wherein, the active session table comprises all through the quantity of the session that is in state of activation of this first charge node; When receiver module 801 receives interim state of activation request, the quantity of the session that is in state of activation in the active session table carried out add 1 operation; When receiver module 801 receives end session request, the quantity of the session that is in state of activation in the active session table carried out subtract 1 operation.
This first charge node further comprises:
At this moment, the active session table is preserved module 805 and is further used for, whether the quantity of judging the session that is in state of activation of recording in the active session table of its preservation is 0, if so, then this first charge node is left interim state of activation and is kept synchronized sleep with other charge node in the wireless mesh network; Otherwise, keep described interim state of activation.
Fig. 9 is the structural representation of the second charge node in the second embodiment of the invention.As shown in Figure 9, this second charge node comprises: sending module 902; Can also comprise: receiver module 901, session setup module 903, active session table are preserved module 904 and timer module 905.Because the second charge node is the final jump node in the wireless mesh network, so do not need to carry out path computing.The function of the receiver module 901 shown in Fig. 9, sending module 902 and session setup module 903 the second charge node in having the first embodiment, also comprise the function that some are new.Certainly, also can design respectively separately receiver module 901, sending module 902 and session setup module 903 for the first embodiment and the second embodiment.Below the second charge node in the first embodiment and the second embodiment share receiver module 901, sending module 902 and session setup module 903 and describe as example.
Sending module 902 also is used for after receiver module is received interim state of activation request, the upper hop node feedback acknowledgment message of the second charge node in the wireless mesh network, and after receiver module receives the session message that the upper hop node of the second charge node sends, by the remote-wireless communication network, for example GPRS network sends this session message.
In addition, the function of other modules in this second charge node (comprise active session table preserve module 904 and timer module 905) the respectively function with corresponding module shown in Figure 8 is identical, does not repeat them here.
Can find out by above the second embodiment, owing to for the charge node in the parking charge system is provided with interim state of activation, can avoid owing to charge node carries out entering in the process delay that sleep state brings in session.Like this, can guarantee that bank settlement etc. is to the successful operation of the business of delay sensitive.And because the reduction of time delay, the user experiences and also is improved.
The present invention also provides a kind of machine-readable storage medium, and storage is used for making a machine to carry out the instruction of charging method as described herein.Particularly, system or the device of being furnished with storage medium can be provided, storing the software program code of realizing the function of arbitrary embodiment in above-described embodiment at this storage medium, and making the computer (or CPU or MPU) of this system or device read and carry out the program code that is stored in the storage medium.
In this case, the program code itself that reads from storage medium can be realized the function of any one embodiment above-described embodiment, so program code and program code stored storage medium have consisted of a part of the present invention.
Be used for providing the storage medium embodiment of program code to comprise floppy disk, hard disk, magneto optical 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 the server computer.
In addition, be noted that, the program code that not only can read by object computer, and can make by the instruction based on program code the operating system of calculating hands-operation etc. finish partly or completely practical operation, thereby realize the function of any one embodiment in above-described embodiment.
In addition, be understandable that, will by the program code that storage medium is read write in the memory set in the expansion board of inserting in the computer or write with expanding element that computer is connected in the memory that arranges, make the CPU that is installed on expansion board or the expanding element etc. come operating part and all practical operations based on the instruction of program code subsequently, thereby realize the function of arbitrary embodiment in above-described embodiment.
The embodiment of the invention discloses a kind of charge system, charge node and charging method.This charge system comprises: the first charge node and the second charge node; Wherein, only the second charge node is opened gateway function, and the first charge node and the second charge node form wireless mesh network, and communicates by wireless mesh network; The second charge node is connected to the remote-wireless communication network by the remote-wireless communication link.The first charge node is used for sending the first session message by wireless mesh network to the second charge node; The second charge node is used 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.Like this, needn't a remote-wireless communication link be set for each charge node, therefore greatly reduce required communication cost.
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 (19)
1. a charge node is applied to the parking charge system, can form wireless mesh network with other charge node, and communicate by described wireless mesh network; Described charge node comprises:
Path calculation module (502,802) is used for according to the session message, determining the next-hop node of the described charge node in the described wireless mesh network when described charge node is in state of activation;
Sending module (503,803) is used for described session message is sent to the next-hop node that described path calculation module (502) is determined.
2. charge node according to claim 1, wherein, described charge node also comprises:
Condition judgment module (504) is used for judging the residing state of this charge node itself, and the state of judging the next-hop node that path calculation module (502,802) is determined according to the described state of charge node;
Wherein, described sending module (503,803) sends described session message according to the judged result of described condition judgment module (504) when the state of next-hop node is state of activation.
3. charge node according to claim 1 wherein, also comprises: receiver module (501,801) and/or session setup module (804);
Wherein, described receiver module (501,801) is used for when described charge node is in state of activation, and the upper hop node of the described charge node from described wireless mesh network receives described session message;
Session setup module (804), described charge node is used for when need to be initiated new session, trigger described charge node and enter interim state of activation, and trigger the next-hop node that described path calculation module (802) calculates described charge node, and trigger described sending module (803) and send interim state of activation request 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 in state of activation always.
4. charge node according to claim 3, wherein, described receiver module (801), also be used for when described charge node is in state of activation, the upper hop node of the described charge node from described wireless mesh network receives interim state of activation request, and the described charge node of triggering enters interim state of activation after receiving described interim state of activation request, and then described receiver module (801) receives described session message when described charge node is in interim state of activation;
Path calculation module (802) also is used for according to described interim state of activation request, calculates next-hop node; And
Sending module (803) is also for the next-hop node that described interim state of activation request is forwarded to the definite described charge node of described path calculation module.
5. charge node according to claim 4, wherein, described receiver module (801) also is used for receiving the interim state of activation confirmation message of the next-hop node feedback of described charge node;
When described receiver module (801) was not received the interim state of activation confirmation message of described next-hop node in the given time, described sending module (803) also was used for resending described interim state of activation request to described next-hop node; When described receiver module (801) receives described interim state of activation request, described sending module (803) also is used for feeding back interim state of activation confirmation message to the upper hop node of described charge node.
6. charge node according to claim 3, wherein, further comprise: the active session table is preserved module (805), is used for preserving the active session table, wherein, all quantity through the session that is in state of activation of described charge node of described active session table record; When described receiver module (801) receives described interim state of activation request, the quantity of the session that is in state of activation in the described active session table carried out add 1 operation; At described receiver module (801) when receiving end session request, the quantity of the session that is in state of activation in the described active session table carried out subtract 1 operation, when the quantity that is in the session of state of activation in the 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 the described wireless mesh network.
7. charge node according to claim 6 wherein, also comprises: timer module (806), comprise one or more timers, and correspond respectively to each session in the active session table; Described receiver module (801) also is used for, when receiving the session message relevant with described session, and timer zero clearing that will be corresponding with described session; Described active session table is preserved module (805) and also is used for, and when the timing of timer arrives, the quantity of the session that is in state of activation in the described active session table carried out subtracts 1 operation.
8. a charge node is applied to the parking charge system, and the gateway function of this charge node is in opening state, can form wireless mesh network with other charge node, and communicate by described wireless mesh network; Wherein, described charge node (202) is connected to the remote-wireless communication network by the remote-wireless communication link; Described charge node (202) comprising:
Sending module (902) is for the accounting server that the session message is sent to the remote-wireless communication network by the remote-wireless communication link.
9. charge node according to claim 8 wherein, also comprises: receiver module (901) and/or session setup module (903);
Wherein, described receiver module (901) is used for when described charge node is in state of activation, and the upper hop node of the described charge node from described wireless mesh network receives described session message;
Described session setup module (903) is used for when described charge node (202) needs the initiation new session, triggers session message that described sending module (902) will be corresponding with this new session and sends to accounting server in the remote-wireless communication network by the remote-wireless communication link.
10. charge node according to claim 9, wherein,
Described receiver module (901) also is used for receiving interim state of activation request from the upper hop node of the described charge node of described wireless mesh network, and the described charge node of triggering (202) enters interim state of activation after receiving described interim state of activation request, and it is that described charge node is in state of activation always that wherein said charge node enters interim state of activation;
Described sending module (902) also is used for after described receiver module (901) receives described interim state of activation request, and described session message is sent to accounting server in the remote-wireless communication network by the remote-wireless communication link;
Described session setup module (903) also is used for when described charge node (202) needs to initiate new session, trigger described charge node (202) and enter immediately 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.
11. charge node according to claim 10 wherein, also comprises: the active session table is preserved module, is used for preserving the active session table, wherein, and all quantity through the session that is in state of activation of described charge node of described active session table record; When described receiver module receives described interim state of activation request, the quantity of the session that is in state of activation in the described active session table carried out add 1 operation; When described receiver module receives end session request, the quantity of the session that is in state of activation in the described active session table carried out subtract 1 operation, when the quantity that is in the session of state of activation in the 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 the described wireless mesh network.
12. require as requested 11 described charge node, wherein, also comprise: timer module, comprise one or more timers, correspond respectively to each session in the described active session table; Described receiver module also is used for, when receiving the session message relevant with described session, and timer zero clearing that will be corresponding with described session; Described active session table is preserved module and also is used for, and when the timing of a timer arrives, the quantity of the session that is in state of activation in the described active session table carried out subtracts 1 operation.
13. a charge system, wherein, this charge system comprises: each described second charge node of each described first charge node and claim 8-12 according to claim 1-7; Wherein, only described the second charge node is opened gateway function, and the first charge node and the second charge node form wireless mesh network, and communicates by described wireless mesh network; Described the second charge node is connected to the remote-wireless communication network by the remote-wireless communication link;
Described the first charge node is used for sending the first session message by described wireless mesh network to described the second charge node;
Described the second charge node is used for receiving described the first session message by described wireless mesh network, and sends the second session message by described wireless mesh network to described the first charge node.
14. charging method, be applied to comprise in the charge system of the first charge node (201) and the second charge node (202), wherein said the first charge node (201) and the second charge node (202) form wireless mesh network and communicate by described wireless mesh network, and only described the second charge node (202) is opened gateway function, is connected to the remote-wireless communication network by the remote-wireless communication link; Wherein, this charging method comprises:
Described the first charge node (201) sends the first relevant session message of charging by described wireless mesh network to described the second charge node (202);
Described the second charge node (202) receives described the first session message that described the first charge node (201) sends by described wireless mesh network, and sends the second session message by described wireless mesh network to described the first charge node (201).
15. charging method according to claim 14, also comprise: described the second charge node (202) sends to accounting server in the described long distance wireless communication network by described long distance wireless communication link with described the first session message, and receives described the second session message by described long distance wireless communication link from described long distance wireless communication network.
16. charging method according to claim 14, wherein, described the first charge node (201) and described the second charge node (202) all have two kinds of operating states: sleep state and state of activation; And the time that described the first charge node and described the second charge node enter sleep state and state of activation is synchronous.
17. charging method according to claim 14, wherein, described the first charge node (201) and described the second charge node (202) all have three kinds of operating states: sleep state, state of activation and interim state of activation;
Described charging method also comprises:
Described the first charge node (201) sends interim state of activation request to described the second charge node (202) by described wireless mesh network, and enters interim state of activation;
Described the second charge node (202) receives described interim state of activation request, and enters described interim state of activation;
Wherein saidly enter interim state of activation for be in state of activation always.
18. charging method according to claim 17, wherein, described the first charge node (201) sends interim state of activation request by described wireless mesh network and comprising to described the second charge node (202):
The upper hop node of described first charge node (201) of described the first charge node (201) from described wireless mesh network receives interim state of activation request, and enters interim state of activation after receiving described interim state of activation request; And
Described the first charge node (201) is according to described interim state of activation request, calculate the next-hop node of described the first charge node (201) in the described wireless mesh network, and described interim state of activation request is forwarded to described next-hop node, until arrive described the second charge node (202); Wherein, described the first charge node (201) comprises to the first relevant session message of described the second charge node (202) transmission charging by described wireless mesh network:
Described the first charge node (201) sends described the first session message to described next-hop node when entering described interim state of activation, until arrive described the second charge node (202).
19. charging method according to claim 18, wherein, described the first charge node (201) sends interim state of activation request by described wireless mesh network and also comprises to described the second charge node (202):
Described the first charge node (201) is fed back interim state of activation confirmation message to described upper hop node, and the interim state of activation confirmation message that receives described next-hop node feedback;
Wherein, described the first charge node (201) comprises to the first relevant session message of described the second charge node (202) transmission charging by described wireless mesh network:
Described the first charge node (201) sends described the first session message to described next-hop node, until arrive described the second charge node (202) when receiving the interim state of activation confirmation message of described next-hop node feedback.
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