CN100464547C - A method for implementing information transmission between equipments of different communication protocols - Google Patents
A method for implementing information transmission between equipments of different communication protocols Download PDFInfo
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- CN100464547C CN100464547C CNB2004100069910A CN200410006991A CN100464547C CN 100464547 C CN100464547 C CN 100464547C CN B2004100069910 A CNB2004100069910 A CN B2004100069910A CN 200410006991 A CN200410006991 A CN 200410006991A CN 100464547 C CN100464547 C CN 100464547C
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Abstract
The invention provides a method for implementing message transmission between the equipments of different communication protocols, and the method sets different identifiers for each communication equipment, all its link ports and its communication protocol; divides a message transmitting course into two layers: a network interconnecting layer and a concrete transmitting layer; according to the said identifiers, obtains router message in the network interconnecting layer and maps out the communication protocol supported by the communication equipment through the route message and uses the communication protocol to transmit the message through the concrete link interface of each communication equipment. The method implements the interconnection and intercommunication between multiple transmission mediums, physical links, and different communication equipments, and can ensure ordered, reliable and non-repeated data transmission.
Description
Technical field
The present invention relates to the interconnection technique between communication equipment, particularly a kind of method that realizes different communication protocol equipment room message transmission.
Background technology
Along with network technology, the especially develop rapidly of radio network technique makes the interconnection of various communication equipments become possibility.Diverse network standard such as bluetooth, infrared, wired and wireless communication standards such as 802.11,802.3, in the solution of the different levels part of OSI (OSI) procotol the interconnection problems of specific communication equipment.The equipment of how procotol of at present existing various different levels being realized effectively couples together, and the interconnection and interflow that realizes multiple different communication equipment is a current problem that needs solution.
Present ICP/IP protocol be one with the irrelevant communication protocol family of the physical link of concrete low layer, it can reach the purpose that handle has multiple heterogeneous networks medium or connects into the network of a logic with the different physical links of medium to a certain extent, can realize the interconnection and interflow of multiple communication equipment, but the solution of this agreement there is certain limitation.
At first, must move the ICP/IP protocol stack on each equipment, on the equipment of some resource-constrained, as mobile phone, possibly can't move one even the protocol stack of compact version with the basis of ICP/IP protocol stack as communication between devices, has limited the range of application of current device interconnection.
Secondly, at present wireless network, in the ICP/IP protocol standard, lack the support to the single-hop wireless network, wireless device can't be by transfer and other devices communicatings above direct wireless transmission distance of intermediate equipment.
As seen, also there is not a kind of effective method to solve interconnection problems between multiple transmission medium, physical link, the different communication protocol equipment at present.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method that realizes different communication protocol equipment room message transmission, solve interconnection problems between multiple transmission medium, physical link, the different communication protocol communication equipment.
For achieving the above object, the invention provides a kind of method that realizes different communication protocol equipment room message transmission, this method may further comprise the steps:
1) communication protocol of using for each link port of each link port of each communication equipment, each communication equipment and each communication equipment in advance is provided with different identifiers respectively;
2) message transmitting procedure is divided into two levels: network interconnection layer and concrete transport layer; Its message transmitting procedure comprises:
A, sources traffic equipment will information transmitted, sources traffic device identifier, target communication device identifier are encapsulated as the network interconnection layer data;
B, sources traffic equipment are encapsulated into its routing iinformation to target communication device in the network interconnection layer data;
C, sources traffic equipment are according to the routing iinformation in the network interconnection layer data, obtain the communication protocol identifier of the next communication device link port of sources traffic equipment and this route by the address binding agreement, and the communication protocol identifier and the network interconnection layer data of the link port that obtains be encapsulated as concrete transport layer data, according to the communication protocol that identifies in this concrete transport layer data, concrete transport layer data is sent to next communication equipment by the link port that identifies in this concrete transport layer data;
If it is target communication device that d receives the communication equipment of concrete transport layer data, then this equipment from concrete transport layer data, read sources traffic equipment will information transmitted;
If receiving the communication equipment of concrete transport layer data is not target communication device, then according to the routing iinformation of network interconnection layer data in the concrete transport layer data of receiving, obtain the communication protocol identifier of the next communication device link port of sources traffic equipment and this route, and obtain the communication protocol identifier of link port of the next communication equipment of this route, and network interconnection layer data in the communication protocol identifier of the link port that obtains and the concrete transport layer data received is encapsulated as new concrete transport layer data, according to the communication protocol that identifies in the new concrete transport layer data, new concrete transport layer data is sent to the next communication equipment of this route by the link port that identifies in the new concrete transport layer data; Next communication equipment execution in step d is a target communication device up to the communication equipment of receiving concrete transport layer data.
Wherein, described step 1) may further include: for the process of each communication equipment is provided with different identifiers respectively;
Described step 2) further tells transport layer;
Described step a takes a step forward and comprises: sources traffic equipment will information transmitted, the originating process identifier of sources traffic equipment, the target process identifier of target communication device are encapsulated as transport layer data;
Described step a is: sources traffic equipment is encapsulated as the network interconnection layer data with transport layer data, sources traffic device identifier, target communication device identifier;
Described steps d further comprises: when the communication equipment of receiving concrete transport layer data is target communication device, this communication equipment is according to the target process identifier of target communication device in the concrete transport layer data, sources traffic equipment in this concrete transport layer data will information transmitted be sent to the target process of sign.
Described step b can for: if sources traffic equipment is not preserved its routing iinformation to target communication device, then use Routing Protocol to initiate the route querying process and obtain routing iinformation, the routing iinformation that obtains is preserved, and be encapsulated in the network interconnection layer data; If sources traffic equipment has been preserved its routing iinformation to target communication device, then directly this routing iinformation is encapsulated in the network interconnection layer data.
The described route querying process of step b can comprise:
B1, sources traffic equipment are by all link port broadcasting route request information; Unique message identification numbers that this request message comprises link port identifier that sources traffic equipment sends a request message, purpose communication device identifier, generated by sources traffic equipment, the route list of the intermediate equipment of this message of forwarding that this message will be passed through, this tabulation is empty tabulation by the sources traffic device initialize;
After b2, communication equipment were received route request information by link port, the link port identifier that the link port identifier that the sources traffic equipment in the request message is sent a request message and this equipment receive this message was inserted the route list of request message; If this equipment is not the purpose communication equipment, execution in step b3 then, otherwise execution in step b4;
B3, this equipment join the link port of the device identifier of self, this equipment reception route request information and the link port identifier of forwarding route request information in the route list of route request information, with identical message identification numbers with this route request information, remove all LI(link interface)s that receive this route request information by this equipment, this route request information is transmitted in broadcasting; If receiving the communication equipment of route request information is not purpose communication equipment then execution in step b3, otherwise execution in step b4;
B4, purpose communication equipment are preserved the route list in the route request information get off, as the routing iinformation of this equipment to sources traffic equipment, and route list returned to sources traffic equipment by route response message, sources traffic equipment is preserved route list get off after receiving route response message, finishes route querying.
In this method, if communication equipment receive from the route request information that same sources traffic equipment sends, contain the record that has contained self in treated route request information identification number or the route list, then can abandon this route request information.
The method of the described acquisition communication protocol identifier of step c can comprise: this communication equipment is by the physical link port in the routing iinformation, send address request to all devices that is connected this port, comprise the communication protocol identifier of this communication device identifier, this communication device link port, next communication device identifier in the message, and wherein be field of protocol identifier reservation of next communication device link port;
When next communication equipment is received address request, the protocol identifier that this communication equipment is received the link port of this address request is inserted in the field of address request reservation, and, it is returned to the communication equipment that sends address request by address response message.
This method may further include, and after the purpose communication equipment is received concrete transport layer data, generates and transmit the method for concrete transport layer data by sources traffic equipment, generates response message and returns to sources traffic equipment.
Sources traffic equipment is not received response message at the fixed time, then the concrete transport layer data that generates can be transferred to the purpose communication equipment again with same method.
This method can further include, and the purpose communication equipment docks the disposition of collecting mail and ceasing according to self, to the announcement of sources traffic equipment transmission reduction/raising transmission speed, and after sources traffic equipment is received this announcement, reduction/raising transmission speed.
By technical scheme of the present invention as seen, the method of this realization different communication protocol equipment room message transmission of the present invention, message transmitting procedure is divided into different levels, obtain routing iinformation at the network interconnection layer, map out the communication protocol that communication equipment self is supported in concrete transport layer according to routing iinformation, use the concrete LI(link interface) of this communication protocol by each equipment to come transmission information, realized the interconnection and interflow between multiple transmission medium, physical link, the different communication protocol communication equipment.
Description of drawings
Fig. 1 is each layer protocol data encapsulation schematic diagram of a preferred embodiment of the present invention;
Fig. 2 is a schematic network structure embodiment illustrated in fig. 1.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in more detail.
The method of this realization different communication protocol equipment room message transmission of the present invention is divided into different levels with message transmitting procedure, and referring to Fig. 1, Fig. 1 is each layer protocol data encapsulation schematic diagram of a preferred embodiment of the present invention.In the present embodiment, message transmitting procedure divides for three different levels: reliable transmission/unreliable transport layer, network interconnection layer and concrete transport layer.
Reliable transmission/unreliable transport layer (ReliableTransportProtocol/RTP, UnReliableTransportProtocol/URTP) adopts reliable transport protocol/unreliable host-host protocol.Reliable host-host protocol, the communication link of setting up between process reliable, orderly, Flow Control, single worker is controlled.Insecure host-host protocol is set up the communication link control between process, but does not ensure reliable, the orderly transmission of message, and insecure host-host protocol is Real-time Transport Protocol relatively, and less resource occupation, transmission bandwidth and lower delay are faster arranged.Please this layer data comprises as shown in Figure 1: protocol header (RTPHead) and APP (give Chinese?) message.
Network interconnection layer (NetworkInterconnectProtocol/NIP), main effect are to receive and transmit message at different concrete host-host protocols.This layer data comprises as shown in Figure 1: protocol header (NIPHead), RTP message, Routing Protocol (RP) message also comprise security protocol message.
Concrete transport layer (ConcreteTransportProtocol/CTP) is the communication protocol that the present invention realizes the physics that message transmission relies on, and as http, Transmission Control Protocol etc., it is transmission information between the equipment that directly links to each other just.The form of head does not need to define.This layer data comprises as shown in Figure 1: HTTP (or other agreements) message, NIP message, address binding agreement (ABP) message.
Fig. 2 is a schematic network structure embodiment illustrated in fig. 1.Comprised equipment 1, equipment 2, equipment 3 and equipment 4 in this network, wherein equipment 1 has process 1～n, n process; Equipment 2 also has process 1～n, n process; Equipment 3 has process 1～3,3 processes; Equipment 4 also has process 1～n, n process.Equipment 1 links to each other with equipment 2 by ICP/IP protocol, and equipment 2 links to each other with equipment 3 by not supporting the ICP/IP protocol serial ports, and equipment 2 links to each other with equipment 4 by ICP/IP protocol.
In order between the different processes between the different equipment, to communicate by letter, need a series of identifier (address) to distinguish different equipment, communication link, process etc. in the present embodiment.Below following some address titles of using are described:
1, device id: the identifier with uniqueness of each equipment in network
2, link port: the address of the hardware on the equipment, as eth0, coml or the like
3, concrete communication protocol address: operate in the concrete communication protocol address on certain hardware address, as tcp: //xxx.xxx.xxx.xxx:8080, udp: //xxx.xx.xx.xx:8088
4, process address can identify with port numbers PortNumber, distinguishes the address of different processes on the equipment, can use the notion name of Port.
Below the process of carrying out reliable message transmission between the process 3 on process on the equipment 11 and the equipment 3 is specifically described.This process may further comprise the steps:
Present embodiment is the route querying of being undertaken by following step:
Step (31), equipment 1 is by all link port broadcasting route request information; Unique message identification numbers that this request message comprises link port identifier that equipment 1 sends a request message, equipment 3 identifiers, generated by equipment 1, the route list of the intermediate equipment of this message of forwarding that this message will be passed through, this tabulation is empty tabulation by the sources traffic device initialize.
After step (32), equipment 2 are received route request information by link port, the equipment in the request message 1 is referred to the route list that link port identifier that the link port identifier of asking message and this equipment receives this message is inserted request message;
Step (33), equipment 2 is not target communication device, the device identifier of self, this equipment are received the link port of route request information to equipment 2 and the LI(link interface) identifier of forwarding route request information joins in the route list of route request information, with identical message identification numbers with this route request information, remove all LI(link interface)s that receive this route request information by this equipment, this route request information is transmitted in broadcasting; Receive that the communication equipment of route request information carries out this step; If this equipment is the purpose communication equipment, then execution in step b4;
Step (34), equipment 3 is target communication device, it preserves the route list in the route request information get off after receiving route request information, as the routing iinformation of equipment 3 to equipment 1, and route list returned to equipment 1 by route response message, equipment 1 is preserved route list get off after receiving route response message, finishes route querying.
In the present embodiment, this route response message has to operate on the duplex channel.If one-way communication passage, before returning route response message, should initiate the route finding process from the target device to the initiating equipment, wireless nested for fear of route finding process, in this route requests, should comprise the route list from promoter to the destination device that has obtained, by the route discovery second time, return route messages routing iinformation is returned to the promoter by carrying.Route querying and route maintenance start as required.Do not produce the message in cycle in the network, reduce consumption the network bandwidth.Middle equipment can buffering route information, can quicken searching of route; When routing failure, can provide other standby routes at once.
In the route querying process, if communication equipment receive from the route request information of same sources traffic equipment, contain the record that has contained self in treated route request information identification number or the route list, then abandon this route request information.
Step 4, the network interconnection layer data is passed to concrete transport layer, these data at first will be delivered to equipment 2, but this moment, equipment 1 was not known the communication protocol address of equipment 2 link port, it is according to the routing iinformation in the network interconnection layer data, obtain the communication protocol identifier of equipment 2 link port of equipment 1 and this route by the address binding agreement, and the communication protocol identifier and the network interconnection layer data of the link port that obtains be encapsulated as concrete transport layer data, with the communication protocol that identifies in the data, send to equipment 2 by the link port that identifies in the data.
The process that present embodiment carries out map addresses comprises:
Step (41), equipment 1 is by the physical link port in the routing iinformation, send address request to all devices that is connected this port, present embodiment is exactly to send address request to equipment 2, the communication protocol identifier that comprises this communication device identifier, this communication device link port in this message, it identifies this port and transmits information, equipment 2 identifiers with ICP/IP protocol, and the protocol identifier of equipment 2 link port has been reserved a field under wherein being.
Step (42), when equipment 2 is received address request, the protocol identifier that this communication equipment is received the link port of this address request is inserted in the field of address request reservation, and by address response message, it is returned to the equipment 1 that sends address request.
Step 5, after equipment 2 is received concrete transport layer data, this equipment of discovery is not target communication device, then transmit to equipment 3 according to routing iinformation, same by the address binding agreement, the communication protocol identifier of acquisition equipment 2 link port, and the communication protocol identifier and the network interconnection layer data of the link port that obtains be encapsulated as concrete transport layer data is with the communication protocol that identifies in the data, send to equipment 3 by the link port that identifies in the data.
Step 6 after equipment 3 is received concrete transport layer data, finds that this equipment is target communication device, and the concrete transport layer data that then will receive sends to the target process of sign---process 3 according to the target process identifier of target communication device in the data.
Step 7, after process 3 was received concrete transport layer data, reading sources traffic equipment from this concrete transport layer data will information transmitted; The identifier of process 1 on the identifier of process 3 on response message, the equipment 3, the equipment 1 is encapsulated as transport layer data, returns to equipment 1 by above-mentioned steps according to routing iinformation.
In the present embodiment, after process 1 passes to the network interconnection layer with transport layer data on the equipment 1, wait for the response message that above-mentioned steps 7 is returned, process 3 has been received information on this message authentication equipment 3.Present embodiment can adopt repeatedly overtime retransmission policy, if that is: the process 1 of equipment 1 is not received response message at the fixed time, the concrete transport layer data that then will generate is transferred to the process 3 of equipment 3 again with same method, guarantees that message is by 3 correct the receiving of process on the equipment 3.If repeatedly retransmit failure, then to process 1 reporting errors.
In the present embodiment, equipment 3 can be according to the disposition of self docking the breath of collecting mail in addition, and to the announcement of equipment 1 transmission reduction/raising transmission speed, after sources traffic equipment was received this announcement, reduction/raising transmission speed carried out flow control with this.
Present embodiment is that message transmitting procedure has been divided into three levels, and this can carry out sources traffic equipment to the message transmission between each process of purpose communication equipment, realizes that multi-process is multiplexing.If adopting the inventive method carries out in the network of message transmission, each communication equipment all has only the process of a needs communication, then can transport layer not branched away, directly with sources traffic equipment will information transmitted, sources traffic device identifier, target communication device identifier be encapsulated as the network interconnection layer data, adopt above-mentioned method, also can realize the interconnection and interflow between the difference.
By the above embodiments as seen, the method of this realization different communication protocol equipment room message transmission of the present invention, realized the interconnection and interflow between multiple transmission medium, physical link, the different communication protocol communication equipment, can guarantee information in order, reliable, do not have a transmission that repeats.
Claims (9)
1. a method that realizes different communication protocol equipment room message transmission is characterized in that, this method may further comprise the steps:
1) communication protocol of using for each link port of each link port of each communication equipment, each communication equipment and each communication equipment in advance is provided with different identifiers respectively;
2) message transmitting procedure is divided into two levels: network interconnection layer and concrete transport layer; Its message transmitting procedure comprises:
A, sources traffic equipment will information transmitted, sources traffic device identifier, target communication device identifier are encapsulated as the network interconnection layer data;
B, sources traffic equipment are encapsulated into its routing iinformation to target communication device in the network interconnection layer data;
C, sources traffic equipment are according to the routing iinformation in the network interconnection layer data, obtain the communication protocol identifier of the next communication device link port of sources traffic equipment and this route, and the communication protocol identifier and the network interconnection layer data of the link port that obtains be encapsulated as concrete transport layer data, according to the communication protocol that identifies in this concrete transport layer data, concrete transport layer data is sent to next communication equipment by the link port that identifies in this concrete transport layer data;
If it is target communication device that d receives the communication equipment of concrete transport layer data, then this equipment from concrete transport layer data, read sources traffic equipment will information transmitted;
If receiving the communication equipment of concrete transport layer data is not target communication device, then according to the routing iinformation of network interconnection layer data in the concrete transport layer data of receiving, obtain the communication protocol identifier of the next communication device link port of sources traffic equipment and this route, and network interconnection layer data in the communication protocol identifier of the link port that obtains and the concrete transport layer data received is encapsulated as new concrete transport layer data; And new concrete transport layer data is sent to the next communication equipment of this route according to the communication protocol that identifies in the new concrete transport layer data, by the link port that identifies in the new concrete transport layer data; Next communication equipment execution in step d is a target communication device up to the communication equipment of receiving concrete transport layer data.
2. information transferring method as claimed in claim 1 is characterized in that, described step 1) further comprises: for the process of each communication equipment is provided with different identifiers respectively;
Described step 2) further tells transport layer;
Described step a takes a step forward and comprises: sources traffic equipment will information transmitted, the originating process identifier of sources traffic equipment, the target process identifier of target communication device are encapsulated as transport layer data;
Described step a is: sources traffic equipment is encapsulated as the network interconnection layer data with transport layer data, sources traffic device identifier, target communication device identifier;
Described steps d further comprises: when the communication equipment of receiving concrete transport layer data is target communication device, this communication equipment is according to the target process identifier of target communication device in the concrete transport layer data, sources traffic equipment in this concrete transport layer data will information transmitted be sent to the target process of sign.
3. information transferring method as claimed in claim 1, it is characterized in that, step b is: if sources traffic equipment is not preserved its routing iinformation to target communication device, then use Routing Protocol to initiate the route querying process and obtain routing iinformation, the routing iinformation that obtains is preserved, and be encapsulated in the network interconnection layer data; If sources traffic equipment has been preserved its routing iinformation to target communication device, then directly this routing iinformation is encapsulated in the network interconnection layer data.
4. information transferring method as claimed in claim 3 is characterized in that, the described route querying process of step b comprises:
B1, sources traffic equipment are by all link port broadcasting route request information; Unique message identification numbers that this request message comprises link port identifier that sources traffic equipment sends a request message, purpose communication device identifier, generated by sources traffic equipment, the route list of the intermediate equipment of this message of forwarding that this message will be passed through, this tabulation is empty tabulation by the sources traffic device initialize;
After b2, communication equipment were received route request information by link port, the link port identifier that the link port identifier that the sources traffic equipment in the request message is sent a request message and this equipment receive this message was inserted the route list of request message; If this equipment is not the purpose communication equipment, execution in step b3 then, otherwise execution in step b4;
B3, this equipment join the link port of the device identifier of self, this equipment reception route request information and the link port identifier of forwarding route request information in the route list of route request information, with identical message identification numbers with this route request information, remove all LI(link interface)s that receive this route request information by this equipment, this route request information is transmitted in broadcasting; If receiving the communication equipment of route request information is not purpose communication equipment then execution in step b3, otherwise execution in step b4;
B4, purpose communication equipment are preserved the route list in the route request information get off, as the routing iinformation of this equipment to sources traffic equipment, and route list returned to sources traffic equipment by route response message, sources traffic equipment is preserved route list get off after receiving route response message, finishes route querying.
5. information transferring method as claimed in claim 4, it is characterized in that: if communication equipment receive from the route request information that same sources traffic equipment sends, contain the record that has contained self in treated route request information identification number or the route list, then abandon this route request information.
6. information transferring method as claimed in claim 1, it is characterized in that, the method of the described acquisition communication protocol identifier of step c comprises: this communication equipment is by the physical link port in the routing iinformation, send address request to all devices that is connected this port, comprise the communication protocol identifier of this communication device identifier, this communication device link port, next communication device identifier in the message, and wherein be field of protocol identifier reservation of next communication device link port;
When next communication equipment is received address request, the protocol identifier that this communication equipment is received the link port of this address request is inserted in the field of address request reservation, and, it is returned to the communication equipment that sends address request by address response message.
7. information transferring method as claimed in claim 1 or 2, it is characterized in that, this method further comprises: after the purpose communication equipment is received concrete transport layer data, generate and transmit the method for concrete transport layer data by sources traffic equipment, generate response message and return to sources traffic equipment.
8. information transferring method as claimed in claim 7 is characterized in that: sources traffic equipment is not received response message at the fixed time, and the concrete transport layer data that then will generate is transferred to the purpose communication equipment again with same method.
9. information transferring method as claimed in claim 1, it is characterized in that, this method further comprises: the purpose communication equipment is according to the disposition of self docking the breath of collecting mail, send the announcement of reduction/raising transmission speed to sources traffic equipment, after sources traffic equipment is received this announcement, reduction/raising transmission speed.
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| CNB2004100069910A CN100464547C (en) | 2004-03-03 | 2004-03-03 | A method for implementing information transmission between equipments of different communication protocols |
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| CNB2004100069910A CN100464547C (en) | 2004-03-03 | 2004-03-03 | A method for implementing information transmission between equipments of different communication protocols |
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| CN100464547C true CN100464547C (en) | 2009-02-25 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101132378B (en) * | 2006-08-25 | 2010-07-21 | 华为技术有限公司 | Method and communication system for intercommunication among different networks |
| CN101141375B (en) * | 2006-09-05 | 2010-12-22 | 华为技术有限公司 | Packet transmission method, transmission apparatus and system within LAN |
| CN102035791B (en) * | 2009-09-28 | 2014-12-24 | 无锡江南计算技术研究所 | Message engine supporting dual mode and message transmitting method |
| CN105245353A (en) * | 2014-07-09 | 2016-01-13 | 青岛海尔智能家电科技有限公司 | Service discovery method and service discovery device |
| CN105119997A (en) * | 2015-08-31 | 2015-12-02 | 广州市优普计算机有限公司 | Data processing method of cloud computing system |
| CN111431932B (en) * | 2018-02-02 | 2022-05-24 | 钟国诚 | Electronic device and method for transferring electronic data |
| TW202118273A (en) * | 2018-02-02 | 2021-05-01 | 鍾國誠 | Electronic device and method for sending electronic data |
| CN110601980B (en) * | 2019-08-26 | 2022-01-14 | 中国第一汽车股份有限公司 | Communication method, system and storage medium of vehicle-mounted terminal |
| CN111277364B (en) * | 2020-01-08 | 2022-03-22 | 中国电子科技集团公司第五十四研究所 | Information forwarding method based on information identification code |
| CN112165480B (en) * | 2020-09-22 | 2022-11-11 | 北京字跳网络技术有限公司 | Information acquisition method and device and electronic equipment |
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| CN1665239A (en) | 2005-09-07 |
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