CN1482817A - Method and apparatus for implementing encrypted communication in mobile communication system - Google Patents
Method and apparatus for implementing encrypted communication in mobile communication system Download PDFInfo
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- CN1482817A CN1482817A CNA021369666A CN02136966A CN1482817A CN 1482817 A CN1482817 A CN 1482817A CN A021369666 A CNA021369666 A CN A021369666A CN 02136966 A CN02136966 A CN 02136966A CN 1482817 A CN1482817 A CN 1482817A
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Abstract
The invention discloses a process and apparatus for realizing encryption communication in the mobile system, wherein the apparatus comprises a terminal, which converses the voice into data stream, and performs encryption to the voice data stream, and transmits it to the second type mobile terminal through the data communication interface. The advantages of the invention are short switching time for communication, higher system reliability, free selection between open conversation and private communication, simplified implementation and high secrecy.
Description
(1) technical field
The present invention relates to a kind of method and apparatus of in mobile system, realizing coded communication, be a kind of on the basis of mobile communication system, support and realize the method and apparatus of coded communication, relate in particular to the system that in the communications field, realizes encrypted speech and enciphered data and constitute and the realization technology.
(2) background technology
Continuous development along with the communication technology, requirement to the communication technology is also more and more higher, not only require communication system to have characteristics such as quality height, multi-functional, reliability height, and the confidentiality of communication system also proposed more and more higher requirement, the range of application of coded communication extends to domestic consumer from the special user.Existing mobile communication provides disguise, confidentiality and the fail safe of communication, satisfied domestic consumer or non-sensitive user's requirement, but require for relating to responsive field such as military affairs, finance and national security, existing mobile communications system is unappeasable.
With the cdma cellular mobile communication system is example, CDMA mobile communication system adopts spread spectrum technic and air-interface encryption, improved the disguise and the confidentiality of cell mobile communication systems to a certain extent, but this secrecy technology can not satisfy the security needs of military communication and state security department.That realizes at present encrypting mobile communication function in mobile communication system has a U.S. STUIII system (U.S. government's third generation encrypted speech and data telephony system), but this cryptographic communication system also exists deficiency and shortcoming.Carry out coded communication in the communication process and will carry out continuing of unencryped word earlier, switch to the coded communication service then, do like this and make that the process of carrying out coded communication is cumbersome, be not omnidistance the encryption, and when switching to coded communication and continue, system's connecting time is longer, the success rate that continues is lower, and call drop takes place easily, and therefore for the requirement of coded communication, existing mobile communication system and U.S. STUIII cryptographic communication system all exist bigger limitation.
(3) summary of the invention
The objective of the invention is to propose a kind of method and apparatus of in mobile communication system, realizing coded communication, have talking connection time weak point, the reliability height, bright close conversation is selected free, and realization is simple, the characteristics that confidentiality is high.The realization of encryption system is not need to increase special hardware unit in existing mobile communication system, only needs software upgrading just can realize.This method and apparatus can be realized in the existing communication system, for example realizes in CDMA mobile communication systems, also can be applied in other mobile communication system simultaneously.The use that has overcome in the existing mobile encrypted communication technology is loaded down with trivial details, need unencryped word and encryption switching, coded communication connecting time to grow, occur easily shortcomings such as call drop, this invention is for guaranteeing the information security of special dimension mobile communication, in system, support end to end security communication, promptly with the interconnection of secret subsystem, in mobile communication system, handle transmission channel, guarantee to realize coded communication truly for the voice/data information after encrypting provides special do not carry out coding/decoding and enciphering/deciphering.
The object of the present invention is achieved like this:
A kind of device of in mobile system, realizing coded communication, it comprises:
One terminal installation, comprise that one does not have two class portable terminals of data-handling capacity and two Terminal Type equipment of a composition encryption terminal, formed encryption terminal use device jointly, described two Terminal Type equipment link to each other with described two class portable terminals by a data communication interface;
One base station system, described terminal installation links to each other with this base station system by an air interface.
Realize the method for coded communication in the device of a kind of as above-mentioned realization coded communication in mobile system, wherein said method is meant the operation workflow that realizes coded communication, comprising:
Operation workflow comprises:
(1) two Terminal Type equipment is initiated call encryption;
(2) be call encryption by data communication interface two class portable terminals identification, portable terminal is by air interface foundations that makes a call, and the application cryptographic services also sends to base station system to business option by air interface in call message;
(3) base station system is carried out the secure service connection according to business option;
After (4) two class portable terminals confirm to connect, send connection to the base station and finish, enter Traffic Channel;
(5) base station initiated interconnection system link protocol functional unit after connection is finished connects, and is sent to mobile switching centre;
(6) behind the called off-hook, call setup also enters the speech scrambling state;
(7) communicate through the Traffic Channel that the base station provides through the voice of encryption or the data flow of data, finish the overall process of coded communication.
Realize the method for coded communication in the device of a kind of as above-mentioned realization coded communication in mobile system, wherein said method realizes by following technical protocol stack:
The protocol stack of one terminal installation, comprise the agreement that an agreement and that does not have two class portable terminals of data-handling capacity form to be encrypted two Terminal Type equipment of terminal, described two Terminal Type device protocols are made up of terminal upper layer application layer and data communication protocol layer, described two class mobile terminal protocols are made up of data communication protocol layer, wireless link protocol layer and mobile communication wireless protocol layer, wherein the data communication protocol layer of data communication protocol layer and two Terminal Type equipment is peer layers, connects by data communication interface;
The protocol stack of one base station, form by wireless link protocol layer, mobile communication wireless protocol layer, interconnection system link protocol layer and physical layer, wherein radio protocol layer and described two class portable terminal radio protocol layers are peer layers, and they connect by the air interface of mobile system; The radio link layer of wireless link protocol layer and described two class portable terminals is peer layer in protocol stack.
Effect of the present invention is: adopt the method for the invention and device, compared with prior art, do not need manually to carry out bright, encrypted word switching, aspect such as connecting time and communication reliability has obtained progress, really realized omnidistance coded communication, satisfy responsive field and key departments demand, ensured communication security mobile communication.Simultaneously, apparatus and method of the present invention implement simply, and each agreement is standard agreement, in existing C DMA communication system, as long as revise the software application that can realize and succeed, so the advantage of the present invention on possessing skills.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is for encrypting the mobile communication system protocol stack;
Fig. 2 is the structure chart of encryption mobile communication system device of the present invention;
Fig. 3 is the flow chart of coded communication method of calling of the present invention.
(5) embodiment
Be the device composition that example is described method of encrypting and use in detail below with the CDMA mobile communication system.
In cdma communication system, realize the device and the implementation method of omnidistance coded communication.Communication separates with unencryped word with coded communication, and in same system, realize, encryption and unencryped word communication service function are independent of each other, make the connecting time of coded communication shorten greatly, and the whole process that has realized coded communication is encrypted, communication effect is good, the call completing rate height, and solved easy the appearance because the situation of the communication disruption that the failure of existing system modem synchronization causes in the coded communication process.Each part of the communication protocol stack of formulating all is the general international standard agreement, makes the mobile encrypted communication system of CDMA have the ability with other communication equipments merchant's standard device butt joint.
The present invention relates to use standard agreement and, be example and 1 be described below with reference to the accompanying drawings with protocol stack in the mobile encrypted Communication System Design of CDMA to the design of the operational mode of agreement:
End side comprises two Terminal Type equipment 111 and two class portable terminals 112, and network side comprises base station system 12.Two Terminal Type equipment, 111 agreements are made up of for 1112 layers 1111 layers of terminal upper layer application and data communication protocol.Two class portable terminals 112 are by 1121 layers of data communication protocols, 1122 layers of (IS707a.2 of radio link protocol, the international standard radio link protocol) and mobile communication wireless agreement 1123 form, wherein 1121 layers of data communication protocol with two Terminal Type equipment 112 of data communication protocol are peer layers for 1123 layers, and A connects by data communication interface.Base station system 12 is by 121 layers of (IS707a.2 of radio link protocol, company's road agreement that international standard is wireless), mobile communication wireless agreement 122 floor, interconnection system link protocol 123 floor (the interconnecting link agreement of IS-728 international standard) and physical layer are formed, wherein 122 layers of wireless protocols with two class portable terminals 112 of wireless protocols are peer layers for 1123 layers, and they connect by the air interface B of mobile communication system; 121 layers of Radio Link with two class portable terminals 112 of radio link protocol are peer layer in protocol stack for 1122 layers; For terminal type, two Terminal Type equipment 111 and two class portable terminals 112 can be combined together to form the internal applications interface that 0 class portable terminal, 11, two Terminal Type equipment 111 with data-handling capacity and the data communication interface A between the two class portable terminals 112 become 0 class portable terminal 11.
The present invention is according to the protocol stack that designs among Fig. 1, the device that design forms as shown in Figure 2:
Simultaneously referring to Fig. 2, Fig. 1, agreement according to protocol stack constitutes and structure, terminal installation comprises two kinds, and a kind of two class portable terminals 112 and a kind of encryption terminal of being made up of two Terminal Type equipment 111 that does not have data-handling capacity formed encryption terminal use device altogether.The rising to call for of 1111 layers of process user of upper layer application of two Terminal Type equipment 111 asked, and will ask to notify two class portable terminals, 111, two class portable terminals 111 to make a call by air interface B by data communication interface A.When call setup successfully entered speech scrambling, two Terminal Type equipment 111 used vocoder that voice are changed into data flow, and through cryptographic algorithm audio data stream are encrypted; Audio data stream after the encryption sends to two class portable terminals 112 by data communication interface A, two class portable terminals 112 are pressed data flow the form of radio link protocol 1122, and use wireless protocols 1123 forms to encapsulate, be sent to base station 22 by air interface B; Because have peer-to-peer between the protocol layer in the equipment, paging is an opposite inverse process.Same these functions can be carried out in having 0 class portable terminal 11 of data-handling capacity.
According to base station BS S in the protocol stack the protocol stack of MSC, form mobile encrypted communication system base station system 22 equipment, in base station 221, do not need newly to add hardware, only need to increase interconnection system link protocol functional unit 222 with software of finishing radio link protocol and interconnection system link protocol, base station system 22 encapsulates the Frame of radio link protocol 121 cell processing by the interconnection system link protocol, send to mobile switching centre (MSC) 23, enter public switch telephone network 24.
Realize the treatment step (is example with two Terminal Type equipment and two class portable terminals) as shown in Figure 3 of the method for coded communication in the mobile system of the present invention, be described in detail as follows:
(1) two Terminal Type equipment is initiated call encryption;
(2) be call encryption by data communication interface two class portable terminals identification, portable terminal is by air interface foundations that makes a call, and the application cryptographic services also sends to base station system to business option by air interface in call message;
(3) base station system is carried out the secure service connection according to business option;
After (4) two class portable terminals confirm to connect, send connection to the base station and finish, enter Traffic Channel;
(5) base station initiated interconnection system link protocol functional unit after connection is finished connects, and is sent to mobile switching centre;
(6) behind the called off-hook, call setup also enters the speech scrambling state;
(7) communicate through the Traffic Channel that the base station provides through the voice of encryption or the data flow of data, finish the overall process of coded communication.
Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (6)
1. device of realizing coded communication in mobile system is characterized in that described device comprises:
One terminal installation, comprise that one does not have two class portable terminals of data-handling capacity and two Terminal Type equipment of a composition encryption terminal, formed encryption terminal use device jointly, described two Terminal Type equipment link to each other with described two class portable terminals by a data communication interface;
One base station system, described terminal installation links to each other with this base station system by an air interface.
2, the device of realizing coded communication in mobile system as claimed in claim 1 is characterized in that described terminal installation uses the 0 class mobile terminal apparatus with data-handling capacity that two Terminal Type equipment and two class portable terminals are combined together to form.
3, as claim 1, the 2 described devices of realizing coded communication in mobile system, when it is characterized in that described terminal installation uses 0 class mobile terminal apparatus, described communication interface becomes the internal applications interface of 0 class portable terminal.
4, a kind ofly in mobile system, realize the method for coded communication, it is characterized in that described method is meant the operation workflow that realizes coded communication, comprising according to the device of claim 1:
(1) two Terminal Type equipment is initiated call encryption;
(2) be call encryption by data communication interface two class portable terminals identification, portable terminal is by air interface foundations that makes a call, and the application cryptographic services also sends to base station system to business option by air interface in call message;
(3) base station system is carried out the secure service connection according to business option;
After (4) two class portable terminals confirm to connect, send connection to the base station and finish, enter Traffic Channel;
(5) base station initiated interconnection system link protocol functional unit after connection is finished connects, and is sent to mobile switching centre;
(6) behind the called off-hook, call setup also enters the speech scrambling state;
(7) communicate through the Traffic Channel that the base station provides through the voice of encryption or the data flow of data, finish the overall process of coded communication.
5, a kind ofly in mobile system, realize the method for coded communication it is characterized in that described method realizes by following technical protocol stack according to the device of claim 1:
The protocol stack of one terminal installation, comprise the agreement that an agreement and that does not have two class portable terminals of data-handling capacity form to be encrypted two Terminal Type equipment of terminal, described two Terminal Type device protocols are made up of terminal upper layer application layer and data communication protocol layer, described two class mobile terminal protocols are made up of data communication protocol layer, wireless link protocol layer and mobile communication wireless protocol layer, wherein the data communication protocol layer of data communication protocol layer and two Terminal Type equipment is peer layers, connects by data communication interface;
The protocol stack of one base station, form by wireless link protocol layer, mobile communication wireless protocol layer, interconnection system link protocol layer and physical layer, wherein radio protocol layer and described two class portable terminal radio protocol layers are peer layers, and they connect by the air interface of mobile system; The radio link layer of wireless link protocol layer and described two class portable terminals is peer layer in protocol stack.
6, the method that realizes coded communication in mobile system as claimed in claim 5 is characterized in that the rising to call for and ask of upper layer application layer process user in the described two Terminal Type equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021369666A CN1482817A (en) | 2002-09-13 | 2002-09-13 | Method and apparatus for implementing encrypted communication in mobile communication system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA021369666A CN1482817A (en) | 2002-09-13 | 2002-09-13 | Method and apparatus for implementing encrypted communication in mobile communication system |
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| CN1482817A true CN1482817A (en) | 2004-03-17 |
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| CNA021369666A Pending CN1482817A (en) | 2002-09-13 | 2002-09-13 | Method and apparatus for implementing encrypted communication in mobile communication system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761241B (en) * | 2004-10-12 | 2010-06-09 | 三星电子株式会社 | Processing voice data in packet communication network with encryption |
| CN107566345A (en) * | 2017-08-07 | 2018-01-09 | 中译语通科技（青岛）有限公司 | A kind of voice safe transmission method of sequential encryption |
-
2002
- 2002-09-13 CN CNA021369666A patent/CN1482817A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761241B (en) * | 2004-10-12 | 2010-06-09 | 三星电子株式会社 | Processing voice data in packet communication network with encryption |
| CN107566345A (en) * | 2017-08-07 | 2018-01-09 | 中译语通科技（青岛）有限公司 | A kind of voice safe transmission method of sequential encryption |
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