CN101521879A - Wireless channel switching method and system therefor - Google Patents
Wireless channel switching method and system therefor Download PDFInfo
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Abstract
The embodiment of the invention relates to a wireless channel switching method and a system therefor. The embodiment of the wireless channel switching method comprises the steps of starting empty encryption and implementing signal switching of a mobile station when reaching preset triggering conditions. The embodiment of the wireless channel switching system comprises the mobile station and a network side device, and the network side device comprises a channel switching device that is used for implementing the channel switching of the mobile station when reaching preset triggering conditions after the empty encryption between the network side device and the mobile station is finished. In the embodiment of the wireless channel switching method and the system, after a network side finishes the empty encryption to the mobile station, the channel switching to the mobile station is implemented under preset triggering conditions so as to transfer the conversation position of the mobile station and increase the cracking difficulty of the conversation by leading a cracker unable to obtain sufficient conversation data, thus lowering cracking possibility and improving the conversation safety between users.
Description
Technical field
The present invention relates to mobile communication technology, especially relate to wireless channel switching method and system in the mobile communications network.
Background technology
Global mobile communication (Global System for Mobile communication, abbreviation GSM) system is made up of following functional module: travelling carriage (Mobile Station, abbreviation MS), base station sub-system (Base Station Subsystem, abbreviation BSS), network and switching subsystem (Network andSwitching Subsystem, be called for short NSS) and operational subsystems (Operation Subsystem, OSS) etc., as shown in Figure 1.
MS can provide the autonomous device parts of a certain business, also can be connected to exterior terminal, such as be connected to PC or facsimile machine by interface.MS comprises mobile device (Mobile Equipment is called for short ME) and subscriber identification module (Subscriber Identity Module is called for short SIM).ME does not need to distribute to individually certain user.SIM card is a line module of storing all user profile.A user's SIM card is inserted after the ME of a MS, MS has just belonged to this user, and calls out (if there is) and can be delivered to this MS.ME and quilt are wailed between the sign indicating number not related, and quilt is wailed sign indicating number and SIM card connects together.In this case, the user can use any ME, as long as it is just passable that SIM card is inserted this ME.
BSS links to each other with MS and NSS by standard interface, provides and manage wireless transmission between MS and NSS.BSS is by base transceiver station (Base Transceiver Station, be called for short BTS) and can control base station controller (Base Station Controller the is called for short BSC) composition of several BTS.
Communicating by letter between NSS management GSM user and other communication users.The functional module of NSS comprises:
Mobile services switching centre (Mobile Service Switching Center is called for short MSC) is coordinated GSM user's the incoming call and the configuration of breathing out.A MSC is connected with a BSS usually at least.MSC can be connected to other MSC in the identical network, or the MSC in the heterogeneous networks (be called MTSO, MTSO), and other public network, as PSTN, ISDN etc.MSC provides the interface between wireless network and other PSNs or the MSC.
Attaching position register (Home Location Register, be called for short HLR), can there be the stand-alone computer of exchange capacity, the database that comprises user profile and user's current-position related information (not being meant user's actual position information) etc. to form by one.
Visitor location register (Visitor Location Register is called for short VLR) links one or more MSC, and provisional storage is about being provided the subscription data of current service by corresponding MSC.
AUC's (Authentication Center is called for short AUC), the secure data of leading subscriber checking.
Equipment identity register (Equipment Identity Register, be called for short EIR), stored ME data or with the equipment identity register of ME related data (Equipment Identity Register, EIR).
The GSM Access Network comprises 3 interfaces: the one, and wave point also is air interface, between MS and BTS; The 2nd, the A interface between MSC and the BSC; The 3rd, the A-bis interface between BTS and the BSC.
The safe and secret function of existing GSM has two purposes: the first prevents to have no right user's access, its two confidentiality that provides the user that has the right.The former prevents to have no right user's access by the sign on the check and correction user SIM card, and the latter prevents that by the encryption to transmission code stream on the wireless path third party from eavesdropping.In addition, the international mobile station identity number (International Mobile Subscriber Identity is called for short IMSI) that replaces in the SIM card with a temporary mark transmits in signaling, makes the third party can't follow the tracks of the user.Encryption on the wireless path is by network operator decision, and the application that the user can't interfere authentication and ciphering process whether.The encryption and decryption function is with device-dependent, and the user does not know current encryption situation, and authentication is unique relevant with SIM card.
The authorizing procedure that network side carries out MS as shown in Figure 2, comprising:
(1) network side starts timer T3260 simultaneously by sending the message initiated authorizing procedure of authentication request (Authentication Request) to MS.Comprise in the Authentication Request message compute authentication response parameter (RAND, 128bit) and " the key sequence number " of distributing to key (CKSN).(2) after MS receives authentication request message, respond (Authentication Response) required information (number of responses SRES according to the calculation of parameter authentication that wherein provides, obtain through the A3 algorithm computation by RAND and Ki) and new key K c, before sending AuthenticationResponse message to network side, new key K c is replaced original cipher key (CKSN) be stored in the SIM card, and give network side loopback Authentication Response message together with " key sequence number ".Network side stops the T3260 timer after receiving Authentication Response message, and whether the SRES that relatively oneself preserves is consistent with the SRES in the Authentication Response message.If unanimity then authentication is passed through, and enters other follow-up flow processs, as: encryption flow.
The encryption flow that network side carries out MS as shown in Figure 3, comprising:
(1) encryption flow is that encryption mode is provided with in the flow process, MSC sends encryption mode order (Cipher Mode Command) message to BSC, comprise the cryptographic algorithm of requirement and key K c (comprise requirement do not encrypt) in this message, and whether require MS in Ciphering Mode Complete message, to comprise IMEI.(2) BSC comes the algorithm of final decision employing according to the cryptographic algorithm of the cryptographic algorithm in the Cipher Mode Command message of MSC, BSC permission and the cryptographic algorithm that MS supports, notifies BTS then.(3) BTS sends encryption mode to MS order (Ciphering Mode Command) message is set, and is used for notifying MS selected cryptographic algorithm.(4) after MS receives Ciphering Mode Command message, start the transmission of encryption mode, return encryption mode to system then and finish (CipheringMode Complete) message.(5) receive the Ciphering Mode Complete message of MS after, BSC notice MSC encrypts and finishes.
Network side starts eats dishes without rice or wine to encrypt, and initiates encrypting and decrypting and starts flow process, as shown in Figure 4, comprising:
(1) the BSS side begins deciphering (Start deciphering).(2) use expressly transmission to begin to encrypt (Start cipher) message and give MS.(3) after receiving Start cipher message, MS begins to encrypt and begin deciphering (Start deciphering and Start enciphering).(4) after BSS receives any frame or message (any correctly deciphered message) that MS sends.(5) BSS begins to encrypt (Start enciphering) immediately behind successful decryption.The data of eating dishes without rice or wine to transmit of GSM are to use Kc to encrypt, and therefore, as long as cracked Kc, just can eavesdrop, illegally obtain the GSM voice or the data of eating dishes without rice or wine to transmit.Gsm system is a wireless system, the transmission of its wave point all be digital signal, and the A5 algorithm is not that perfection can not crack, and therefore has the bigger possibility that cracks.
Summary of the invention
An aspect of of the present present invention provides a kind of wireless channel switching method, to strengthen the fail safe of conversing between the user.
Another aspect of the present invention provides a kind of wireless channel switched system, to strengthen the fail safe of conversing between the user.
Be to realize a first aspect of the present invention, the embodiment of wireless channel switching method of the present invention comprises starting and eats dishes without rice or wine to encrypt, and when reaching default trigger condition travelling carriage is carried out channel and switches.
For realizing a second aspect of the present invention, the embodiment of wireless channel switched system of the present invention, comprise travelling carriage, network equipment, wherein said network equipment comprises a channel switching device, when network equipment and travelling carriage eat dishes without rice or wine to encrypt finish after, be used for when reaching default trigger condition, travelling carriage being carried out channel and switch.
Embodiments of the invention, network side to travelling carriage eat dishes without rice or wine to encrypt finish after, switch by under default trigger condition, travelling carriage being carried out channel, to shift the talking position of travelling carriage, make the cracker increase the difficulty that cracks of conversation this time owing to the communicating data that can not obtain q.s, thereby reduced the possibility that cracks, strengthened the fail safe of conversing between the user.
Description of drawings
Fig. 1 is the structural representation of existing global system for mobile communications;
Fig. 2 carries out the flow chart of authentication to travelling carriage for existing network side;
The flow chart that Fig. 3 encrypts travelling carriage for existing network side;
Fig. 4 eats dishes without rice or wine to encrypt for existing network side starts, and initiates the flow chart of encrypting and decrypting;
Fig. 5 is the flow chart of wireless channel switching method embodiment one of the present invention;
Fig. 6 is the flow chart of wireless channel switching method embodiment two of the present invention;
Fig. 7 is the flow chart of wireless channel switching method embodiment three of the present invention;
Fig. 8 is the flow chart of wireless channel switching method embodiment four of the present invention;
Fig. 9 is the flow chart of wireless channel switching method embodiment five of the present invention;
Figure 10 is the structural representation of wireless channel switched system embodiment one of the present invention;
Figure 11 is the structural representation of wireless channel switched system embodiment two of the present invention;
Figure 12 is the structural representation of wireless channel switched system embodiment three of the present invention;
Figure 13 is the structural representation of wireless channel switched system embodiment four of the present invention.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Fig. 5 is the flow chart of wireless channel switching method embodiment one of the present invention.As shown in Figure 5, this method comprises:
After the MS dialing, initiate the immediate assignment flow process: (RACH) goes up to BTS channel request (Channel Request) message on the Random Access Channel of Um Interface.After BTS receives this channel request message and decoding, distribute the channel of eating dishes without rice or wine to the BSC request.After BSC receives the channel assignment request message of BTS, be the MS allocated channel, go up at access grant channel (Access Grant Channel is called for short AGCH) by BTS and send " immediate assignment message " (Immediate Assignment) to MS.Comprise channel in the immediate assignment message and describe (Channel Description) information, be used for describing the channel and corresponding slow associated control channel (the Slow Associated Dedicated ControlChannel of a distribution, be called for short SACCH) channel, as: channel type (Channel Type), vertical shift (TDMAoffset), place time slot (timeslot), absolute RF channel number.MS receives " immediate assignment message ", be transformed into channel appointed, as: Separate Dedicated Control Channel (Stand-alone DedicatedControl Channel, be called for short SDCCH) or Traffic Channel (Traffic Channel, be called for short TCH), go up a setting Asynchronous Balanced Mode (Set AsynchronousBalanced Mode is called for short SABM) frame at main signaling channel (main DCCH) and insert, set up data link layer LAPDm link.Main DCCH generally is SDCCH, FACCH and SACCH.Have service request information in the SABM frame, be used for and, separate and page response etc. as service request, position updating request, IMSI to network instruct MS requested service.BTS loopback UA frame on main DCCH is confirmed.
After step 13, MSC receive the service request information of MS, initiate authentication, encryption flow.After authentication is finished, can carry out some Signalling exchanges between MS and the MSC, as call setup (Setup) flow process.
Authentication is initiated and control by network side.Network side can start authorizing procedure under following arbitrary condition:
1, the MS application is in VLR or the change of HLR user related information;
2, during service access when MS activation or deexcitation and supplementary service (comprise that MS caller, MS are called);
3, the network insertion first time after MSC/VLR is restarted;
When 4, key sequence Kc does not match.
Network side can also carry out starting authorizing procedure in the business procedure at MS.
After authentication was finished, MSC initiated the encryption flow to travelling carriage.
After step 14, encryption flow are finished, receive that as BSC the encryption mode of MS finishes (CipheringMode Complete) message or MSC and receive that the encryption mode of BSC finishes message, network side can start the time in office eats dishes without rice or wine to encrypt, and initiates encrypting and decrypting and starts flow process.
MS and BSS must carry out synchronously, use encrypting and decrypting to start flow process, make both sides can clearly know from when beginning encrypting and decrypting on Dedicated Control Channel (Dedicated Control Channel is called for short DCCH) and TCH.Before encrypting and decrypting started, those information that need protection can not be transmitted.Distributed the DCCH channel when eating dishes without rice or wine, encrypting and decrypting start flow process by network side authorizing procedure is finished after or when Kc triggering after available on the BSS.The transfer process of transmission can be (1) BSS side from the plaintext transmission to the ciphertext, begins deciphering and use expressly to send Start cipher message to MS; (2) after receiving Start cipher message, MS begins encryption and decryption; (3) after receiving any frame or message that MS sends, BSS begins to encrypt behind successful decryption immediately.When TCH is allocated for user data transmission, use the key that in DCCH session (Call Setup) process, uses, MS and BSS start encrypting and decrypting at once.
Fig. 6 is the flow chart of wireless channel switching method embodiment two of the present invention.As shown in Figure 6, this method comprises:
Step 22, BSS transmit the page-response message that MS sends to MSC.BSC sets up A interface SCCP link, sends the page-response message (Paging Request) of MS to MSC.
After step 23, MSC receive the page-response message of MS, initiate authentication, encryption flow.After authentication is finished, can carry out some Signalling exchanges between MS and the MSC, as call setup (Setup) flow process.
After step 24, encryption flow were finished, network side can start the time in office eated dishes without rice or wine to encrypt, and initiates encrypting and decrypting and starts flow process.
Network side to travelling carriage eat dishes without rice or wine to encrypt finish after, by under default trigger condition, travelling carriage being switched, with talking position, the relevant characteristic of channel of eating dishes without rice or wine of the described travelling carriage of change that shifts travelling carriage, make the cracker increase the difficulty that cracks of conversation this time owing to the communicating data that can not obtain q.s, thereby reduced the possibility that cracks, strengthened the fail safe of conversing between the user.
Default trigger condition when network side switches travelling carriage can be set according to following method, as can be according to the measurement report of MS, or sets according to timer.
Below be that caller is the embodiment three to five of example explanation wireless channel switching method of the present invention with MS.
Fig. 7 is the flow chart of wireless channel switching method embodiment three of the present invention.As shown in Figure 7, this method comprises:
Step 31, when MS does caller, by the immediate assignment flow process, BSS is that MS assigns signaling channel.
Step 32, BSS transmit the service request information that MS sends to MSC.
After step 33, MSC receive the service request information of MS, initiate authentication, encryption flow.After authentication is finished, can carry out some Signalling exchanges between MS and the MSC, as call setup (Setup) flow process.
After step 34, encryption flow were finished, network side can start the time in office eated dishes without rice or wine to encrypt, and initiates encrypting and decrypting and starts flow process.
The quality of wireless channel of step 35, moving table measuring current service cell and the quality of wireless channel of adjacent area form measurement report.
Step 36, travelling carriage are sent to base station controller BSC with described measurement report by base transceiver station BTS.Specifically comprise: step 361, travelling carriage are sent to BTS with described measurement report; Step 362, BTS are sent to BSC with described measurement report.
Step 37, base station controller BSC obtain behind the described measurement report mobile station MS to be carried out the channel switching.The signal quality that can comprise current area in the general measure report, and the identification information of at least one adjacent area and cell quality measured value, the cell quality measured value is generally Received signal level (Received signallevel, abbreviation RxLev), Carrier interference ratio (Carrier to Interference Noise Ratio, be called for short CINR) or received signal intensity indication (Receive Signal Strength Indicator, RSSI), the adjacent area can be wireless areas such as 2G, 3G, LTE or WiMAX.BSC judges the Target cell of selecting switching according to measurement report, if MS is switched to other sub-district, then selects an adjacent area as the Target cell that switches from received measurement report, carries out switching flow; If MS is switched to the different channels of current area, not really desirable or preferentially switch to this sub-district as the adjacent area quality according to self strategy, then carry out intra-cell change of current journey.Like this, base station controller BSC just can switch to different channels from current channel with mobile station MS.Switch forward and backward, MS can be operated in Separate Dedicated Control Channel (Stand-alone Dedicated Control Channel, abbreviation SDCCH) on channel or Traffic Channel (Traffic Channel the is called for short TCH) channel, carries out the transmission of signaling and/or data.
Among this embodiment, the quality of wireless channel of the quality of wireless channel of moving table measuring current service cell and adjacent area in the described step 35, the step that forms measurement report can be carried out at arbitrary period.MS can be in step 31 BSS be that MS assigns after the signaling channel, immediately by BTS to the BSC reporting measurement reports.At this moment, after BSC needs waiting step 34 to eat dishes without rice or wine to encrypt to finish, mobile station MS being carried out switching flow, can be that intra-cell changes also can be that switch the minizone.Because intra-cell is changed or the interior switching of BSC is fast, generally adopt intra-cell to change or the interior switching of BSC.
In existing mobile communications network, mainly divide CS (circuit switch, circuit switching) territory and PS (packet switch, packet switching) territory.
Network can need not also to wait for that MS reports the CS measurement report, as: in interrupting GPRS network, initiate CS when professional to the GSM network after the PS business, can directly utilize the measurement report of PS business to select handover candidate cells, mobile station MS is carried out switching flow; MS is in when the transmission indication information need switch under dedicated mode (dedicatedmode), double-transmission mode (dual transfer mode) or the group call mode (group transmit mode), BSC selects handover candidate cells according to self disposing, and mobile station MS is carried out switching flow.
Among this embodiment, finishing of a switching can be by MS, BSC, and common cooperation of MSC finishes.MS is responsible for the monitoring wireless link performance and finishes the work that adjacent cell signal quality is measured.These metrical informations inform that by MS BSS is used for assessment, the switch decision to Radio Link.Occur in BSS inside if switch, then carry out in the BSC and switch, carry out the Target cell channel resource and reserve, and send switching command to MS by BSC.MS carries out switching command, be linked into Target cell after, this switching of BSC notice MSC is finished; Stride BSS if switch to, then BSC need send to switch and require message (Handover Required) to give MSC, allows it initiate switching preparation process, carrying out channel resource at Target cell reserves, after MSC finished the switching preparation, notice BSC allowed BSC send switching command to MS.MS carry out to switch, be linked into Target cell after, this switching of BSC notice MSC at Target cell place is finished.
In the foregoing description, network side is except can be according to the measurement report that receives to carrying out channel switches, travelling carriage also can be to the channel indication message of network side transmission, and network side carries out channel according to the channel indication message that receives to travelling carriage and switches.
Fig. 8 is the flow chart of wireless channel switching method embodiment four of the present invention.As shown in Figure 8, this method comprises:
Step 42, BSS transmit the service request information that MS sends to MSC.
After step 43, MSC receive the service request information of MS, initiate authentication, encryption flow.After authentication is finished, may carry out some Signalling exchanges between MS and the MSC, as call setup (Setup) flow process.
After step 44, encryption flow were finished, network side can start the time in office eated dishes without rice or wine to encrypt, and initiates encrypting and decrypting and starts flow process.
As: BSS uses channel allocation flow process (channel assignment procedure), revises the current physical channel configuration of MS, as time slot configuration, channel type etc.; MSC initiates the Channel Mode Modify flow process, send request for allocation (Assignment Request) and give BSC, BSC is after receiving AssignmentRequest message, require to change channel by BTS to MS transmitting channel schema modification (CHANNEL MODE MODIFY) message, message comprises the channel description of requirement change and the channelling mode after the change, and channelling mode can be indicated the voice or the data channel type of different rates.
Fig. 9 is the flow chart of wireless channel switching method embodiment five of the present invention.As shown in Figure 9, this method comprises:
Step 51, when MS does caller, by the immediate assignment flow process, BSS is that MS assigns signaling channel;
After step 52, BSC receive the channel request message of MS, start a timer.
The effect of timer is to be used in time triggering switching, and startup is not limited to after receiving the channel request message of MS opportunity, can be in the immediate assignment process, or the other times point.
Step 53, BSS transmit the service request information that MS sends to MSC.
After step 54, MSC receive the service request information of MS, initiate authentication, encryption flow.After authentication is finished, can carry out some Signalling exchanges between MS and the MSC, as call setup (Setup) flow process.
After step 55, encryption flow were finished, network side can start the time in office eated dishes without rice or wine to encrypt, and initiates encrypting and decrypting and starts flow process.Step 56, BSC carry out channel in the overtime back of timer Preset Time to travelling carriage and switch.
Among the above embodiment, only described and adopted timer to carry out a kind of concrete condition that channel switches, also can the timer Preset Time overtime in or before travelling carriage carried out channel switch.
Among the above embodiment, can also carry out periodicity and switch.The specific implementation process is: switching finish or handover trigger after, restart this timer, when timer expiry, carry out to switch once more and restart timer.Also can start a new timer is used for periodically switching.The Preset Time of timer can be according to actual conditions, as the required network performance that reaches, or the data in the measurable time period crack difficulty etc.
Equally, also timer can be set on MSC, start timer, trigger by timer and carry out authentication, encryption flow as finishing, receive in encryption after Service Request or page response, switching are finished, change encryption key Kc and/or cryptographic algorithm, make eat dishes without rice or wine safer.Also can carry out periodicity authentication, encryption flow, the cycle is upgraded Kc and/or cryptographic algorithm.
As MS when being called, can be similar to MS among the embodiment three to five according to employing is that the operating procedure of caller is carried out channel to MS and switched.
Embodiments of the invention in order to increase the crack difficulty of cracker to data intercept, can be adjusted setting to the relevant parameter of channel, signaling, to reduce the degree of correlation before and after switching; Can also adopt the switching mode of full rate or half rate.
Carry out in the embodiments of the invention channel switch can be for channelling mode change flow (Channel modemodify procedure), directed retry flow process, heavily assign flow process, configuration change (Configurationchange) flow process, switching flow, group calling to reshuffle (VBS/VGCS reconfigurationprocedure), generally adopt intra-cell to change and heavily assign flow process to reduce the signaling load.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
For cooperating above-mentioned wireless channel switching method, embodiments of the invention also provide a kind of wireless channel switched system.
Figure 10 is the structural representation of a kind of wireless channel switched system of the present invention embodiment one.As shown in figure 10, comprise travelling carriage 100, network equipment 200, wherein said network equipment comprises a channel switching device 210, after the encryption of eating dishes without rice or wine of network equipment and travelling carriage is finished, is used under default trigger condition travelling carriage being carried out channel and switches.The flow process that concrete channel switches can be according to the embodiment of above-mentioned wireless channel switching method.
Figure 11 is the structural representation of a kind of wireless channel switched system of the present invention embodiment two.When network equipment carries out the channel switching according to the measurement report information of the travelling carriage transmission that receives to travelling carriage, channel switching device 220 can comprise first receiver module 221, after receiving the measurement report that forms behind the measurement wireless channel that travelling carriage 100 sends when first receiver module 221,220 pairs of described travelling carriages of channel switching device carry out channel and switch.
Figure 12 is the structural representation of a kind of wireless channel switched system of the present invention embodiment three.When network equipment carries out the channel switching according to the channel indication message of the travelling carriage transmission that receives to travelling carriage, channel switching device 230 can comprise first receiver module 231, when second receiver module 231 received the channel indication message of travelling carriage transmission, 230 pairs of described travelling carriages of channel switching device carried out channel and switch.
Figure 13 is the structural representation of a kind of wireless channel switched system of the present invention embodiment three.When network side carried out the channel switching by timer to travelling carriage, channel switching device 240 can comprise a timer 241, and channel switching device carries out the channel switching or triggers authentication, encryption flow travelling carriage by timer.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1, a kind of wireless channel switching method is characterized in that, comprising:
Start and to eat dishes without rice or wine to encrypt, when reaching default trigger condition, travelling carriage is carried out channel switch.
2, wireless channel switching method according to claim 1 is characterized in that, also comprises: described moving table measuring wireless channel forms measurement report; Describedly under default trigger condition, travelling carriage is carried out channel and switches and specifically comprise:
Described travelling carriage sends described measurement report to base station controller BSC;
Base station controller BSC obtains behind the described measurement report described travelling carriage to be carried out the channel switching.
3, wireless channel switching method according to claim 1 is characterized in that, describedly under default trigger condition travelling carriage is carried out channel and switches and specifically comprise:
Before the measurement report that obtains current channel travelling carriage being carried out channel switches.
4, wireless channel switching method according to claim 1 is characterized in that, describedly under default trigger condition travelling carriage is carried out channel and switches and specifically comprise:
According to the channel indication message of described travelling carriage travelling carriage being carried out channel switches.
5, wireless channel switching method according to claim 1 is characterized in that, describedly under default trigger condition travelling carriage is carried out channel and switches and specifically comprise:
Eat dishes without rice or wine to encrypt finish after, by timer travelling carriage is carried out channel and switches.
6, according to the described arbitrary wireless channel switching method of claim 1-5, it is characterized in that, describedly travelling carriage is carried out channel switch and to comprise:
Switch the channel position of described travelling carriage;
Or described travelling carriage is carried out channel reshuffle.
7, according to the described arbitrary wireless channel switching method of claim 1-5, it is characterized in that, also comprise: travelling carriage is carried out the periodicity channel switch.
8, according to the described arbitrary wireless channel switching method of claim 1-5, it is characterized in that, travelling carriage is upgraded encryption method and/or encryption key.
9, a kind of wireless channel switched system comprises travelling carriage, network equipment, it is characterized in that, described network equipment comprises a channel switching device, when network equipment and travelling carriage eat dishes without rice or wine to encrypt finish after, be used for when reaching default trigger condition, travelling carriage being carried out channel switching.
10, wireless channel switched system according to claim 9, it is characterized in that, described channel switching device also comprises first receiver module, after receiving the measurement report that forms behind the measurement wireless channel that travelling carriage sends when first receiver module, channel switching device carries out channel to described travelling carriage and switches.
11, wireless channel switched system according to claim 9, it is characterized in that, described channel switching device also comprises second receiver module, and when second receiver module received the channel indication message of travelling carriage transmission, channel switching device carried out channel to described travelling carriage and switches.
12, wireless channel switched system according to claim 9 is characterized in that, described channel switching device comprises a timer, and channel switching device carries out the channel switching or triggers authentication, encryption flow travelling carriage by timer.
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| WO2013020483A1 (en) * | 2011-08-05 | 2013-02-14 | 北京新岸线无线技术有限公司 | Method and device for use in channel handover |
| CN103098514A (en) * | 2010-09-13 | 2013-05-08 | 诺基亚公司 | Cooperation in channel reservation |
| US9301180B2 (en) | 2010-02-12 | 2016-03-29 | Blackberry Limited | Methods and apparatus to perform measurements |
| WO2019134163A1 (en) * | 2018-01-08 | 2019-07-11 | Lenovo (Beijing) Limited | Method and apparatus for ue handover |
| CN111833206A (en) * | 2020-06-27 | 2020-10-27 | 中国计量科学研究院 | Energy management system |
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| US9301180B2 (en) | 2010-02-12 | 2016-03-29 | Blackberry Limited | Methods and apparatus to perform measurements |
| CN103098514A (en) * | 2010-09-13 | 2013-05-08 | 诺基亚公司 | Cooperation in channel reservation |
| CN103098514B (en) * | 2010-09-13 | 2016-06-22 | 诺基亚技术有限公司 | Cooperation in channel reservation |
| US10314038B2 (en) | 2010-09-13 | 2019-06-04 | Nokia Technologies Oy | Cooperation in channel reservation |
| WO2013020483A1 (en) * | 2011-08-05 | 2013-02-14 | 北京新岸线无线技术有限公司 | Method and device for use in channel handover |
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