CN1984437A - Method for controlling mobile-platform lossless switch in WiMAX system and telecommunication equipment - Google Patents
Method for controlling mobile-platform lossless switch in WiMAX system and telecommunication equipment Download PDFInfo
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Abstract
The invention is designed for use in solving the issue, existed in current-used technology, that is when the switch request or switch indication is not successfully transmitted, the residual data cannot be transmitted between the service device before switching and the service device after switching so as to cause the loss of data. The invention optimizes the currently-used switch process, and after the destination service device is successfully switched in the mobile station, it sends a switch confirmation to the current service device to trigger the data channel establishing request of current service device in order to ensure the returning process of residual data. The switch control module of the communication device provided by the invention comprises: a sub-module for storing the switch information, a sub-module for confirming the successful switch and a sub-module for triggering the switch confirmation message.
Description
Technical field
The present invention relates to the WiMAX system, harmless control method and the equipment that switches of travelling carriage in a kind of especially WiMAX system.
Background technology
WiMAX (Worldwide Interoperability for Microwave Access, micro-wave access global inter communication) is a kind of emerging wireless communication technology, and it can provide towards the high speed of the Internet and connect.At present, the access level equipment of WiMAX system has two kinds of structural models.
As shown in Figure 1, first kind of framework that the WiMAX system inserts the level communication equipment comprises base station and gateway, pass through the air interface wireless connections between base station and the travelling carriage, between base station and the gateway, be wired connection between gateway and the gateway, gateway is connected to the data, services network, and travelling carriage inserts data network by base station, gateway, and the gateway that directly connects data network is called anchor gateway, the gateway that directly connects the base station is called gateway, and anchor gateway and gateway may overlap.Serving BS and target BS do not have direct data channel, and data and control must be finished by gateway.When travelling carriage switched, current access device was called service equipment, comprised serving BS and gateway, and the equipment of preparing to switch to is called optional equipment, comprises target BS and intended gateway, also may carry out switching controls in the base station level certainly.
As shown in Figure 2, second kind of framework that the WiMAX system inserts the level communication equipment comprises the base station, is connected by air interface between base station and the travelling carriage, it between the base station wired connection, the base station connects the data service network simultaneously, and data only just can be finished switching in the base station level not by gateway.
Each wireless communication technology all has its specific coverage, and the maximum coverage range of a WiMAX base station is 50 kilometers.In order to expand the application of WiMAX, use a plurality of base stations to arrange webbed structure, with WiMAX system extension to a bigger scope.The user of WiMAX when mobile, when moving to the edge of a base station, use handoff technique to switch to adjacent base station, thereby makes the imperceptible communication interruption of user in system.
In above-mentioned two kinds of frameworks, insert level equipment and comprise physics/media interviews control function module, data channel control control function module and switching controls control function module etc., adopt hard-switching technology in the WiMAX system, be MSS (Mobile Subscriber, travelling carriage) before connecting a new base station, must disconnect and being connected of previous base station, disconnect and reconnect between certainly exist a communication interruption time, at this moment between in send to travelling carriage data might will lose.This interruption for the employed business of user, shows as the decline of communication speed, the losing of voice, and under serious situation, going offline may appear in the user.
Be sent to the data that travelling carriage and travelling carriage are sent to network, what come from the network layer transmission is one by one packet, for MAC (Media Access Control, media interviews control) layer is SDU (ServiceData Unit, Service Data Unit), each SDU has a unique sequence number SN (SequenceNumber, sequence number), each SDU may be divided into a plurality of again at MAC, and each piece all has a piece sequence number, be called BSN (Block Sequence Number, piece sequence number).
Travelling carriage is when can't harm switching, in order to guarantee the integrality of data, in prior art solutions, adopt the method for metadata cache/rollback, triggered by other message the opportunity of buffer memory and data-backoff, as shown in Figure 3, specifically comprises the steps:
1, travelling carriage is at first initiated handoff request to the physics/media interviews control function module of current service equipment, carry the identity information of travelling carriage in the handoff request, and carry one the tabulation 1, enumerated the optional equipment that may switch in the tabulation 1, it also can be a plurality of that optional equipment can be one;
Optional equipment is generally detected in the equipment around by current service equipment and obtains or detected automatically by travelling carriage obtaining, and the optional equipment relevant information that mainly comprises in the tabulation 1 has: base station subchannels sequence number, the Carrier interference ratio of representing radio signal quality, received signal intensity, target BS signal and Current Serving BTS signal relative delay, round-trip delay and the grade of service etc. in time.
2, the physics of current service equipment/media interviews control function module notice switching control function module, the tabulation 1 that the switching control function module is sent travelling carriage is analyzed, determine another one tabulation 2, tabulation 2 and tabulation 1 are identical or for tabulating a subclass of 1, tabulation 2 can comprise one or more optional equipments, the service equipment switching control function module of all optional equipments in tabulation 2 is simultaneously initiated handoff request, carries the identity information of travelling carriage in the handoff request;
According to foundation not explanation in existing standard that 1 pair of base station of tabulation is accepted or rejected, can select to set according to the service object by operator.
3, the switching control function module of optional equipment is judged according to the local resource situation, if agree that travelling carriage switches to oneself, notification data passage control function module sends the request of log-on data passage in advance to the data channel control function module of anchor point, carries the identity information of travelling carriage in advance in the log-on data channel request; If optional equipment is disagreed with travelling carriage and switches to this locality that then its switching control function module is returned the switching response message of carrying refusal information to current service equipment;
4, the data channel control function module of anchor point sends data channel to optional equipment and registers response in advance, and is this travelling carriage reserved data passage between the data channel control function module of optional equipment;
5, after the optional equipment of agreement switching was received registration response in advance, its switching control function module sent the handoff response of carrying the agreement handover information to the switching control function module of current service equipment, carries the identity information of travelling carriage in the handoff response equally;
6, the switching control function module of current service equipment is according to the agreement handoff response of receiving, generation comprises the tabulation 3 that all agree switching device information, this tabulation 3 and tabulation 2 are identical or for tabulating a subclass of 2, wherein may comprise the optional equipment that one or more agreement travelling carriages switch, current service equipment sends the handoff response that has tabulation 3 by physics/media interviews control function module to travelling carriage;
7, travelling carriage is selected a destination service equipment from the optional equipment of tabulating 3, and by switching the switching control function module of indication notice current service equipment, this switchings is carried the destination service facility information of choosing in indicating;
8, travelling carriage disconnects and the communicating by letter of current service equipment, and begins to get in touch with the destination service equipment of choosing the reentering of execution network;
9, after the switching control function module of current service equipment was received the switching indication of travelling carriage, notification data passage control function module stopped to send data to travelling carriage, and sends the switching affirmation to the destination service equipment that travelling carriage is chosen;
10, then, the data channel control function module of current service equipment sends data channel foundation request to the data channel control function module of destination service equipment, the request of setting up of this data channel carries the identity information of travelling carriage equally, and the session of the DP-SYNC-REQ parametric representation appointment of carrying can't harm, and needs to guarantee the integrality of data;
11, the data channel control function module of destination service equipment sends data channel foundation response to the data channel control function module of current service equipment, and the DP-SYNC-RES parametric representation of wherein carrying has been received the DP-SYNC-REQ indication;
12, after the data channel control function module of current service equipment receives that the data channel of destination service equipment transmission is set up response, and set up data channel between the data channel control function module of destination service equipment, and give destination service equipment with the data that successfully do not send to this travelling carriage of own buffer memory and synchronizing information rollback, the data that do not have successfully to send comprise the data that do not send as yet and send after be equipped with the data that travelling carriage acknowledges receipt of, indicate the data sequence number information that does not send as yet in remaining all data in the synchronizing information and sent but be not moved the data sequence number information that platform acknowledges receipt of;
13, after current service equipment sends data and synchronizing information, send the data channel request message that has the DP-SYNC-ACK parameter to destination service equipment, data passes is finished in expression;
14, when the data channel control function module of destination service equipment is set up response to current service equipment sending data passage, data channel control function module to anchor point sends data channel foundation request, the request of setting up of this data channel carries the identity information of travelling carriage equally, after the data channel control function module of anchor point receives that the data channel of destination service equipment is set up request, stop to send the data of this travelling carriage to current service equipment, and and the destination service equipment of this travelling carriage between set up data channel, begin the follow-up data that will send to travelling carriage are sent to destination service equipment;
15, the data channel control function module of anchor point sends data channel registration response to the data channel control function module of destination service equipment;
16, after the data channel control function module of destination service equipment is received data channel registration response, begin to send data according to synchronizing information to travelling carriage, whole handoff procedure finishes, and destination service equipment becomes current service equipment and begins to provide access service for travelling carriage.
Because the ease of connection of eating dishes without rice or wine of travelling carriage and network side is subjected to external interference, travelling carriage is because of the handoff request of disturbing or self reason may not have complete transmission the 1st to go on foot, when perhaps the switching in the 7th step is indicated, just disconnected and being connected of network, when travelling carriage reenters new service equipment of network, old service equipment is not known the service equipment that travelling carriage is new, the switching that therefore can't send for the 8th step is confirmed and the 10th data channel foundation request that goes on foot, thereby can not realize the transmission of remaining data from service equipment before switching to switching back service equipment, cause the loss of data in the handoff procedure, thereby can't guarantee harmless the switching.
Summary of the invention
The invention provides harmless control method and the equipment that switches of travelling carriage in a kind of WiMAX system, to solve in the prior art flow process, when handoff request or switch indication when not sending successfully, can not realize that remaining data causes the data loss problem in the handoff procedure from service equipment before switching to the transmission of switching the back service equipment.
The harmless control method of switching of travelling carriage in a kind of WiMAX of the present invention system comprises the steps:
A, travelling carriage switch to the destination service equipment of choosing from current service equipment;
B, destination service equipment send switch acknowledgment message to current service equipment;
Data and synchronizing information that C, current service equipment will successfully not send to this travelling carriage are transmitted to destination service equipment.
Also comprise the steps: before the described steps A
Travelling carriage sends the handoff request of carrying optional equipment information to current service equipment;
Current service equipment is to all optional equipments or select the part optional equipment to send handoff request;
Agree that the optional equipment that this travelling carriage switches shifts to an earlier date register requirement to anchor point transmission data channel;
Anchor point is registered response in advance to the optional equipment return data passage of agreeing switching;
The optional equipment that agreement is switched returns to current service equipment accepts handoff response;
Current service equipment agrees that with all the optional equipment information of switching sends to travelling carriage according to returning the reception handoff response;
Travelling carriage is the select target service equipment from all optional equipments of agreeing to switch.
Specifically comprise in the described steps A:
Travelling carriage send to switch being connected of indication and disconnection and current service equipment to current service equipment;
Travelling carriage also sends the request of reentering and connects with destination service equipment to destination service equipment, and with the address information notification target service equipment of current service equipment.
Specifically comprise among the described step C:
Current service equipment is set up request to destination service equipment sending data passage, comprises harmless indication message in this request;
Destination service equipment is set up response to current service equipment return data passage, comprises harmless switching confirmation in this response, and and current service equipment between set up data channel;
Current service equipment sends to destination service equipment with described data and the synchronizing information that does not successfully send to this travelling carriage, and is being sent completely back notification target service equipment;
Disconnect described data channel between destination service equipment and the current service equipment.
Also comprise among the described step C:
When destination service equipment is set up response to current service equipment sending data passage, send data channel to anchor point and set up request;
Anchor point to destination service equipment return data passage set up response and and destination service equipment between set up data channel, begin then the data of this travelling carriage are sent to destination service equipment;
After destination service equipment received that data channel is set up response, beginning sent data according to synchronizing information to travelling carriage.
The described data that successfully do not send to this travelling carriage comprise the data that do not send to travelling carriage as yet and have sent but be not moved the data that platform acknowledges receipt of.
Described data are split into Service Data Unit SDU and send, and described synchronizing information is meant the serial number information of corresponding SDU.
For realizing said method, the present invention also provides a kind of WiMAX system communication equipment, comprises travelling carriage switching controls module and the signaling receiving and transmission module that is connected described switching controls module, and wherein, described switching controls module comprises:
The handover information sub module stored is used for the storing mobile station switching control information, the access device address information that connects before switching comprising travelling carriage;
Handover success is confirmed submodule, is used to confirm export index signal after travelling carriage successfully connects;
The switch acknowledgment message trigger module is used for generating switch acknowledgment message according to index signal, extracts described address information and write the destination address threshold of this message from described handover information sub module stored, this message is sent into described signaling receiving and transmission module send.
Described communication equipment also comprises:
Data channel is set up module, is used to set up the passage of transceive data;
Connect data channel and set up the data transmit-receive module of module, the data and the data transmit-receive synchronizing information that are used to receive and dispatch travelling carriage;
Connect the data memory module of data transmit-receive module, be used for data and data transmit-receive synchronizing information that buffer memory sends to travelling carriage.
Described communication equipment is meant base station and/or IAD.
Beneficial effect of the present invention is as follows:
The present invention has optimized existing switching flow, by destination service equipment behind the travelling carriage handover success, sending switching to current service equipment confirms, trigger the data channel of current service equipment and set up request, handoff request or switch to confirm whether successfully send or lose no matter then is as long as the travelling carriage successful switch to the destination service equipment of choosing, can successfully trigger the back off procedure of remaining data, thereby realized that travelling carriage receives the integrality of data, has guaranteed the harmless switching requirement of travelling carriage;
For realizing said method, the present invention also provides a kind of communication equipment, the switching controls module of this communication equipment can be behind the travelling carriage handover success, communication equipment before this travelling carriage switches sends switch acknowledgment message, thereby trigger the back off procedure of remaining data, this communication equipment can be realized compatibility with existing communication equipment, satisfies the flexibility requirement of constructing communication network.
Description of drawings
Fig. 1 is existing WiMAX system access network model one;
Fig. 2 is existing WiMAX system access network model two;
Fig. 3 is in the existing WiMAX system, and travelling carriage can't harm the switching controls flow chart;
Fig. 4 is that travelling carriage can't harm the switching controls flow chart in the WiMAX of the present invention system;
Fig. 5 is the structural representation that inserts the level communication equipment of the present invention.
Embodiment
Because the ease of connection of eating dishes without rice or wine of travelling carriage and network side is subjected to external interference, travelling carriage is because of disturbing or self reason does not have complete transmission handoff request or switches indication, when perhaps handoff request or switching indication do not arrive current service equipment, current service equipment is not owing to know the destination service equipment of travelling carriage, can't send to switch to current service equipment and confirm and data channel foundation request, thereby can not realize that remaining data causes the loss of data in the handoff procedure from service equipment before switching to the transmission of switching the back service equipment.
Do not send the loss of data that successfully causes for avoiding because of handoff request or switching indication, the present invention has optimized existing switching flow, by destination service equipment travelling carriage switch finish after, service equipment before switching sends to switch and confirms again, thereby initiate the back off procedure of remaining data, guaranteed the transfer of data integrality requirement of harmless switching.
As shown in Figure 4, specifically comprise the steps:
S01, travelling carriage are at first initiated handoff request to the physics/media interviews control function module of current service equipment, carry the identity information of travelling carriage in the handoff request, and carry one the tabulation 1, enumerated the optional equipment that may switch in the tabulation 1, it also can be a plurality of that optional equipment can be one;
Optional equipment is generally detected in the equipment around by current service equipment and obtains, and the optional equipment relevant information that mainly comprises in the tabulation 1 has: base station subchannels sequence number, the Carrier interference ratio of representing radio signal quality, received signal intensity, target BS signal and Current Serving BTS signal relative delay, round-trip delay and the grade of service etc. in time.
The physics of S02, current service equipment/media interviews control function module notice switching control function module, the tabulation 1 that the switching control function module is sent travelling carriage is analyzed, determine another one tabulation 2, tabulation 2 and tabulation 1 are identical or for tabulating a subclass of 1, tabulation 2 can comprise one or more optional equipments, the service equipment switching control function module of all optional equipments in tabulation 2 is simultaneously initiated handoff request, carries the identity information of travelling carriage in the handoff request;
According to foundation not explanation in existing standard that 1 pair of base station of tabulation is accepted or rejected, can select to set according to the service object by operator.
The switching control function module of S03, optional equipment is judged according to the local resource situation, if agree that travelling carriage switches to oneself, notification data passage control function module sends the request of log-on data passage in advance to the data channel control function module of anchor point, carries the identity information of travelling carriage in advance in the log-on data channel request; If optional equipment is disagreed with travelling carriage and switches to this locality that then its switching control function module is returned the switching response message of carrying refusal information to current service equipment;
The data channel control function module of S04, anchor point sends data channel to optional equipment and registers response in advance, and is this travelling carriage reserved data passage between the data channel control function module of optional equipment;
After the optional equipment that S05, agreement are switched is received registration response in advance, its switching control function module sends the handoff response of carrying the agreement handover information to the switching control function module of current service equipment, carries the identity information of travelling carriage in the handoff response equally;
The switching control function module of S06, current service equipment is according to the agreement handoff response of receiving, generation comprises the tabulation 3 that all agree switching device information, this tabulation 3 and tabulation 2 are identical or for tabulating a subclass of 2, wherein may comprise the optional equipment that one or more agreement travelling carriages switch, current service equipment sends the handoff response that has tabulation 3 by physics/media interviews control function module to travelling carriage;
S07, travelling carriage select a destination service equipment from the optional equipment of tabulating 3, and by switching the switching control function module of indication notice current service equipment, carry the destination service facility information of choosing in this switching indication, after the switching control function module of current service equipment was received the switching indication of travelling carriage, notification data passage control function module stopped to send data to travelling carriage;
After S08, travelling carriage sent and switch indication, disconnection was communicated by letter with current service equipment, began to get in touch with the destination service equipment of choosing, and carried out reentering of network;
In the existing procedure, after current service equipment is received and is switched indication, the destination service equipment of choosing to travelling carriage sends the switching affirmation, in case this just causes and switches indication and successfully do not send or lose, then switch and confirm and to trigger, cause flow process to interrupt, the data that travelling carriage is received are imperfect, therefore the present invention carries out following optimization, by destination service equipment behind the travelling carriage handover success, send switching to current service equipment and confirm, trigger the data channel of current service equipment and set up request, detailed step is as described below:
When S09, travelling carriage reenter at network, with the current service facility information notification target service equipment before switching, destination service equipment basis address information wherein sends switching to current service equipment and confirms, carries the identity information of travelling carriage in this switch acknowledgment message;
After S10, current service equipment are received and are switched affirmation, its data channel control function module sends data channel foundation request to the data channel control function module of destination service equipment, the request of setting up of this data channel carries the identity information of travelling carriage equally, and the session of the DP-SYNC-REQ parametric representation appointment of carrying can't harm, and needs to guarantee the integrality of data;
The data channel control function module of S11, destination service equipment sends data channel foundation response to the data channel control function module of current service equipment, and the DP-SYNC-RES parametric representation of wherein carrying has been received the DP-SYNC-REQ indication;
S12, after the data channel control function module of current service equipment receives that the data channel of destination service equipment transmission is set up response, and set up data channel between the data channel control function module of destination service equipment, and give destination service equipment with the data that successfully do not send to this travelling carriage of own buffer memory and synchronizing information rollback, the data that do not have successfully to send comprise the data that do not send as yet and send after be equipped with the data that travelling carriage acknowledges receipt of, indicate the data sequence number information that does not send as yet in remaining all data in the synchronizing information and sent but the data sequence number information that do not acknowledge receipt of;
After S13, current service equipment send data and synchronizing information, send the data channel request message that has the DP-SYNC-ACK parameter to destination service equipment, data passes is finished in expression;
By step S09-S13, handoff request or switch to confirm whether successfully send or lose no matter, as long as the travelling carriage successful switch to the destination service equipment of choosing, can successfully trigger the back off procedure of remaining data, thereby guarantee that travelling carriage receives the integrality of data.
S14, when the data channel control function module of destination service equipment is set up response to current service equipment sending data passage, data channel control function module to anchor point sends data channel foundation request, the request of setting up of this data channel carries the identity information of travelling carriage equally, after the data channel control function module of anchor point receives that the data channel of destination service equipment is set up request, stop to send the data of this travelling carriage to current service equipment, and and the destination service equipment of this travelling carriage between set up data channel, begin the follow-up data that will send to travelling carriage are sent to destination service equipment;
The data channel control function module of S15, anchor point sends data channel registration response to the data channel control function module of destination service equipment;
After the data channel control function module of S16, destination service equipment is received data channel registration response, begin to send data according to synchronizing information to travelling carriage, whole handoff procedure finishes, and destination service equipment becomes current service equipment and begins to provide access service for travelling carriage.
As shown in Figure 5, be to realize that the method for the invention, the present invention also provide the access level communication equipment in a kind of WiMAX system, comprising:
Data transmit-receive module, the data and the data transmit-receive synchronizing information that are used to receive and dispatch travelling carriage;
The data channel that connects described data transmit-receive module is set up module, is used to set up the passage of transceive data;
Connect the data memory module of data transmit-receive module, be used for data and data transmit-receive synchronizing information that buffer memory sends to travelling carriage;
Travelling carriage switching controls module and the signaling receiving and transmission module that is connected described switching controls module;
Wherein, the switching controls module comprises:
The handover information sub module stored is used for the storing mobile station switching control information, the access device address information that connects before switching comprising travelling carriage;
Handover success is confirmed submodule, is used to confirm export index signal after travelling carriage successfully connects;
The switch acknowledgment message trigger module is used for generating switch acknowledgment message according to index signal, extracts described address information and write the destination address threshold of this message from described handover information sub module stored, this message is sent into described signaling receiving and transmission module send.
According to existing WiMAX network configuration, this access level communication equipment can be the base station, also can be IAD, perhaps can also be that base station and access network are concentrated the network entity that is provided with, and can realize compatible with existing communication equipment.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1, the harmless control method of switching of travelling carriage in a kind of WiMAX system comprises the steps:
A, travelling carriage switch to the destination service equipment of choosing from current service equipment;
B, destination service equipment send switch acknowledgment message to current service equipment;
Data and synchronizing information that C, current service equipment will successfully not send to this travelling carriage are transmitted to destination service equipment.
2, the method for claim 1 is characterized in that, also comprises the steps: before the described steps A
Travelling carriage sends the handoff request of carrying optional equipment information to current service equipment;
Current service equipment is to all optional equipments or select the part optional equipment to send handoff request;
Agree that the optional equipment that this travelling carriage switches shifts to an earlier date register requirement to anchor point transmission data channel;
Anchor point is registered response in advance to the optional equipment return data passage of agreeing switching;
The optional equipment that agreement is switched returns to current service equipment accepts handoff response;
Current service equipment agrees that with all the optional equipment information of switching sends to travelling carriage according to returning the reception handoff response;
Travelling carriage is the select target service equipment from all optional equipments of agreeing to switch.
3, method as claimed in claim 2 is characterized in that, specifically comprises in the described steps A:
Travelling carriage send to switch being connected of indication and disconnection and current service equipment to current service equipment;
Travelling carriage sends the request of reentering and connects with destination service equipment to destination service equipment, and with the address information notification target service equipment of current service equipment.
4, method as claimed in claim 3 is characterized in that, specifically comprises among the described step C:
Current service equipment is set up request to destination service equipment sending data passage, comprises harmless indication message in this request;
Destination service equipment to current service equipment return data passage set up response and and current service equipment between set up data channel, comprise harmless switching confirmation in this response;
Data and synchronizing information that current service equipment will successfully not send to this travelling carriage send to destination service equipment, and are being sent completely back notification target service equipment;
Disconnect described data channel between destination service equipment and the current service equipment.
5, method as claimed in claim 4 is characterized in that, also comprises among the described step C:
When destination service equipment is set up response to current service equipment sending data passage, send data channel to anchor point and set up request;
Anchor point to destination service equipment return data passage set up response and and destination service equipment between set up data channel, begin then the data of this travelling carriage are sent to destination service equipment;
After destination service equipment received that data channel is set up response, beginning sent data according to synchronizing information to travelling carriage.
6, the method for claim 1 is characterized in that, the described data that successfully do not send to this travelling carriage comprise the data that do not send to travelling carriage as yet and sent but be not moved the data that platform confirm to receive.
7, the method for claim 1 is characterized in that, described data are split into Service Data Unit SDU and send, and described synchronizing information is meant the serial number information of corresponding SDU.
8, a kind of WiMAX system communication equipment comprises travelling carriage switching controls module and the signaling receiving and transmission module that is connected described switching controls module, it is characterized in that described switching controls module comprises:
The handover information sub module stored is used for the storing mobile station switching control information, the communication equipment address information that connects before switching comprising travelling carriage;
Handover success is confirmed submodule, is used to confirm export index signal after travelling carriage successfully connects;
The switch acknowledgment message trigger module is used for generating switch acknowledgment message according to index signal, extracts described address information and write the destination address threshold of this message from described handover information sub module stored, this message is sent into described signaling receiving and transmission module send.
9, communication equipment as claimed in claim 8 is characterized in that, described communication equipment also comprises:
Data channel is set up module, is used to set up the passage of transceive data;
Connect data channel and set up the data transmit-receive module of module, the data and the data transmit-receive synchronizing information that are used to receive and dispatch travelling carriage;
The data memory module that connects data transmit-receive module is used for data and data that buffer memory sends to travelling carriage and sends out synchronizing information.
10, mobile communications equipment as claimed in claim 8 or 9 is characterized in that described communication equipment is base station and/or IAD.
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| CNA2005101344534A CN1984437A (en) | 2005-12-15 | 2005-12-15 | Method for controlling mobile-platform lossless switch in WiMAX system and telecommunication equipment |
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| CNA2005101344534A CN1984437A (en) | 2005-12-15 | 2005-12-15 | Method for controlling mobile-platform lossless switch in WiMAX system and telecommunication equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009049553A1 (en) * | 2007-10-16 | 2009-04-23 | Huawei Technologies Co., Ltd. | A method, system and apparatus for handover processing |
| CN101785235A (en) * | 2007-08-13 | 2010-07-21 | 高通股份有限公司 | Optimizing in-order delivery of data packets during wireless communication handover |
| CN104602306A (en) * | 2009-06-16 | 2015-05-06 | 黑莓有限公司 | Method for accessing a service unavailable through a network cell |
| US10341903B2 (en) | 2009-06-16 | 2019-07-02 | Blackberry Limited | Method for accessing a service unavailable through a network cell |
| US10341910B2 (en) | 2009-06-16 | 2019-07-02 | Blackberry Limited | Method for accessing a service unavailable through a network cell |
| CN110769471A (en) * | 2018-07-25 | 2020-02-07 | 成都鼎桥通信技术有限公司 | Switching and device of broadband trunking communication network and public network |
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| US9609557B2 (en) | 2007-08-13 | 2017-03-28 | Qualcomm Incorporated | Optimizing in-order delivery of data packets during wireless communication handover |
| CN101785235A (en) * | 2007-08-13 | 2010-07-21 | 高通股份有限公司 | Optimizing in-order delivery of data packets during wireless communication handover |
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