CN103686891A - Link switching method, controller, access point (AP) and wireless communication system - Google Patents
Link switching method, controller, access point (AP) and wireless communication system Download PDFInfo
- Publication number
- CN103686891A CN103686891A CN201210333487.6A CN201210333487A CN103686891A CN 103686891 A CN103686891 A CN 103686891A CN 201210333487 A CN201210333487 A CN 201210333487A CN 103686891 A CN103686891 A CN 103686891A
- Authority
- CN
- China
- Prior art keywords
- access point
- information
- link
- terminal
- access
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000004891 communication Methods 0.000 title claims abstract description 19
- 230000004044 response Effects 0.000 claims description 67
- 238000011144 upstream manufacturing Methods 0.000 claims description 58
- 230000005540 biological transmission Effects 0.000 claims description 36
- 241000209094 Oryza Species 0.000 claims description 17
- 235000007164 Oryza sativa Nutrition 0.000 claims description 17
- 235000021186 dishes Nutrition 0.000 claims description 17
- 235000009566 rice Nutrition 0.000 claims description 17
- 238000004321 preservation Methods 0.000 claims description 7
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 230000002596 correlated effect Effects 0.000 abstract 2
- 230000008569 process Effects 0.000 description 9
- 230000003993 interaction Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000009499 grossing Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention relates to a link switching method, a controller, an access point (AP) and a wireless communication system. The link switching method specifically includes the following steps: receiving switching information of a first AP and switching information of a second AP; according to the switching information of the first AP and the switching information of the second AP, judging whether a first link of a terminal correlated to the first AP is to be switched to a second link of the terminal correlated to the second AP; sending switching request information to the first AP if determining to switch the first link to the second link, so that the first AP can execute the switching from the first link to the second link according to the switching request information; after the first link is switched to the second link, updating the locally-saved correlation information of the terminal and the first AP to the correlation information of the terminal and the second AP. Therefore, the invention achieves seamless switching in a single frequency network, and avoids modifications of the terminal configuration.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of changing method, controller, access point and wireless communication system of link.
Background technology
Along with the development of the communication technology, Wireless Fidelity (Wireless Fidelity, WIFI) technology is widely used.WIFI is a kind of access of short-distance and medium-distance, conventionally, in 100m, so will carry out one, covers on a large scale, just must arrange more access point (Access point, AP).When user moves freely in the scope of the WIFI network coverage, need a plurality of AP cooperations, guaranteeing provides a seamless access to user, when mobile terminal moves out in the coverage of an AP, be switched within a short period of time on another AP.If cannot complete switching, or the time delay of switching is long, all can cause conversation, therefore solve handover delay, for WIFI network, has great meaning.
In the prior art, generally by the mode of series of fortified passes connection, replace switching.In WIFI network, terminal is only connected with an AP, and while only having the non-constant of signal as this AP, terminal just can turn to other AP and try to be connected with other AP, and this switching mode is direct-cut operation.Wherein, the process of direct-cut operation specifically comprises three phases: go association, network to select with associated.
But above-mentioned switching mode can only be switched to another AP from an AP, if had in the situation of video playback, does not accomplish seamless switching at all; Utilization eats dishes without rice or wine to transmit switching command, and not only transmission error probability is higher, and occupies interface-free resources, eats dishes without rice or wine that it is dangerous to transmit simultaneously, more easily by malice third party, is intercepted and captured; Associated and go associated state conversion to need to spend the longer time; When being switched to another AP, an AP there is no data retransmission function, therefore cause in handoff procedure loss of data more.
In addition, the scheme that 802.11r standard provides if use is carried out the seamless switching of terminal in WIFI network, need to revise terminal, but at present a lot of terminal is not supported 802.11r agreement.
Therefore, if utilize existing techniques in realizing seamless switching not accomplish in single frequency network.
Summary of the invention
The embodiment of the present invention provides a kind of changing method, controller, access point and wireless communication system of link, to solve direct-cut operation in prior art, cannot realize seamless link, maybe need to revise the problem of terminal, access point controller utilizes first access point associated with terminal, and by the handover information of second access point associated with terminal, realize the seamless switching in single frequency network, but also need not revise the configuration of terminal.
In first aspect, the invention provides a kind of changing method of link, described method comprises: receive the handover information of the first access point and the handover information of the second access point; According to the handover information of the handover information of described the first access point and described the second access point, judge whether terminal first link switching associated with described the first access point to described terminal and associated the second link of described the second access point; When determining described the first link switching to described the second link, to described the first access point transmission handover request information, the switching to described the second link according to the first link described in described handover request information and executing in order to described the first access point; When described the first link switching is after described the second link, the terminal information updating associated with described the first access point that this locality is preserved is the associated information of described terminal and described the second access point.
In second aspect, the invention provides a kind of changing method of link, described method comprises: to access controller, send handover information, in order to described access controller, judge whether terminal first link switching associated with the first access point to described terminal and associated the second link of the second access point and obtain judged result; Receive the handover request information that described access controller sends, described handover request information is indicated described judged result; If described in judgment result is that described the first link switching to described the second link, to described the second access point, send and create node solicited message; Receive the establishment of the node to the described establishment node solicited message response message that described the second access point sends, described response message completes described the first link switching to the node establishment of described the second link for the feedback of described establishment node solicited message being used to indicate to described the second access point.
In the third aspect, the invention provides a kind of changing method of link, described method comprises: to access controller, send handover information; Receive the establishment node solicited message that the first access point sends; According to described establishment node solicited message, create related information and the service queue of described terminal and local access point; To described the first access point sending node, create response message, in order to described the first access point, according to described node, create response message and know that local access point completes the first link switching to the node establishment of the second link; To access controller, send handoff response information, in order to described access controller, know that described local access point completes switching.
In fourth aspect, the invention provides a kind of controller, described controller comprises: the first receiving element, for receiving the handover information of the first access point and the handover information of the second access point; Judging unit, for receiving the handover information of described the first access point and the handover information of the second access point from described the first receiving element, according to the handover information of the handover information of described the first access point and described the second access point, judge whether terminal first link switching associated with described the first access point to described terminal and associated the second link of described the second access point, thereby obtain judged result information, and give the first transmitting element by described judged result communication; The first transmitting element, for receiving described judged result information from described judging unit, when determining described the first link switching to described the second link, to described the first access point, send handover request information, the switching to described the second link according to the first link described in described handover request information and executing in order to described the first access point; Updating block, for when described the first link switching is after described the second link, is the associated information of described terminal and described the second access point by the described terminal information updating associated with described the first access point of this locality preservation.
Aspect the 5th, the invention provides a kind of access point, described access point comprises: the first transmitting element, the first transmitting element, for sending handover information to access controller, in order to described access controller, according to described handover information, judge whether terminal first link switching associated with the first access point to described terminal and associated the second link of the second access point, and obtain judged result; The first receiving element, the handover request information sending for receiving described access controller, described handover request information is indicated described judged result, and described judged result is sent to the second transmitting element; The second transmitting element, for receiving described judged result from described the first receiving element, if described in judgment result is that described the first link switching to described the second link, to described the second access point, send and create node solicited message; ; The second receiving element, be used for receiving the establishment of the node to the described establishment node solicited message response message that described the second access point sends, described response message completes described the first link switching to the node establishment of described the second link for the feedback of described establishment node solicited message being used to indicate to described the second access point.。
Aspect the 6th, the invention provides a kind of access point, described access point comprises: the first transmitting element, for sending handover information to access controller; The first receiving element, the establishment node solicited message sending for receiving the first access point, and by described establishment node request message transmission to creating unit; Creating unit, for receive described establishment node solicited message from described the first receiving element, creates related information and the service queue of described terminal and local access point according to described establishment node solicited message; The second transmitting element, for creating response message to described the first access point sending node, creates response message in order to described the first access point according to described node and knows that local access point completes the first link switching to the node establishment of the second link; The 3rd transmitting element, for sending handoff response information to access controller, knows that in order to described access controller described local access point completes switching.
Aspect the 7th, the invention provides a kind of wireless communication system, described system comprises: according to claim 14 to the controller described in 16 any one, according to claim 17 to the access point described in 20 any one, according to access point, switch and terminal described in claim 21 to 26 any one.
By the changing method of the disclosed link of the application embodiment of the present invention, controller, access point and wireless communication system, utilize the handover information of first access point associated with terminal, and by the handover information of second access point associated with terminal, judge whether terminal first link switching associated with the first access point to terminal and associated the second link of the second access point, when determining the first link switching to the second link, to the first access point, send handover request information, the first access point receives after handover request information, carry out information interaction with the second access point, thereby complete the first link to the switching of the second link, thereby realized the seamless switching in single frequency network, but also need not revise the configuration of terminal.
Accompanying drawing explanation
The Organization Chart of the single frequency network that Fig. 1 provides for the embodiment of the present invention one;
The flow chart of the changing method of the link that Fig. 2 provides for the embodiment of the present invention two;
The flow chart of the changing method of the link that Fig. 3 provides for the embodiment of the present invention three;
The flow chart of the changing method of the link that Fig. 4 provides for the embodiment of the present invention four;
The flow chart of the changing method of the link that Fig. 5 provides for the embodiment of the present invention five;
The flow chart of the changing method of the link that Fig. 6 provides for the embodiment of the present invention six;
The schematic diagram of the controller of the link that Fig. 7 provides for the embodiment of the present invention seven;
The schematic diagram of the access point of the link that Fig. 8 provides for the embodiment of the present invention eight;
The schematic diagram of the access point of the link that Fig. 9 provides for the embodiment of the present invention nine.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The changing method of the disclosed link of the embodiment of the present invention, controller, access point and wireless communication system, utilize the handover information of first access point associated with terminal, and the handover information of second access point associated with terminal is judged whether end and associated the first link switching of the first access point to terminal and associated the second link of the second access point, when determining the first link switching to the second link, to the first access point, send handover request information, the first access point receives after handover request information, carry out information interaction with the second access point, thereby complete the first link to the switching of the second link, thereby realized the seamless switching in single frequency network, but also need not revise the configuration of terminal.
The Organization Chart of the single frequency network that Fig. 1 provides for the embodiment of the present invention one.As shown in the figure, single frequency network comprises access controller 11, switch 12, the first access point 13, the second access point 14 and terminal 15.Wherein, in single frequency network, switch 12 can be comprised, also switch 12 can be do not comprised.
Wherein, also comprise much other access points in single frequency network except comprising the first access point 13 and the second access point 14, these access points are used identical channel, and staggered covering, forms a continuum.It is worthy of note, take in the present embodiment the first access point 13 and the second access point 14 is example, and the operation of single frequency network is described, but and does not mean that and in single frequency network, only include the first access point 13 and the second access point 14.
The information of other parts that the access controller in single frequency network (Access Controller, AC) 11 comprises the first access point 13, the second access point 14, terminal 15 and whole system.Such as: terminal 15 is to communicate by letter with the first access point 13, or communicates by letter with the second access point 14.Wherein, the parameter of communication is also a lot, such as identity (Identity, ID), the signal strength signal intensity indication (Received Signal Strength Indication, RSSI), the Packet Error Ratio that receive, data rate etc.Meanwhile, access controller 11 can determine overall state.Such as: determine the messaging parameter that the first access point 13 or the second access point 14 are used.In addition, access controller 11 reports link information separately or the positional information of terminal 15 according to the first access point 13, the second access point 14 associated with it, thereby determines the related information of terminal 15 and the first access point 13, the second access point 14.
Wherein, the concrete steps of association process are as follows:
First, terminal 15 is monitored beacon (BEACON) frame of the first access point 13, the second access point 14 transmissions, this frame provides time and advertised information to terminal 15, and the information that STA utilizes BEACON frame to obtain is carried out network selection, and final terminal 15 selects to add the first access point 13.This process also can complete by active scan.Wherein, active scan is initiatively initiated by terminal 15, by probe requests thereby (probe request) and probe response (probe response), completes.
The second, terminal 15 sends authentication request information to the first access point 13 or access controller 11, can adopt open authentication mode, also can adopt other authentication mode.Terminal 15 could access single frequency network after only having certified passing through, thereby prevents the attack of malice.
The the 3rd, first access point 13 or access controller 11 receive after the authentication request information of terminal 15 transmissions, after authentication is passed through, to terminal 15, reply authentication response information, and authentication state is set to successfully simultaneously.
The 4th, terminal 15 sends handover request information to the first access point 13 or access controller 11, and terminal 15 is by authentication, and the first access point 13 or access controller 11 will send to terminal 15 the associated response information of carrier state codes.
The 5th, terminal 15 receives after the associated response information of carrier state code, if the state value of conditional code is " success ", think being successfully associated of terminal 15 and the first access point 13, in inside, need to send associated confirmation to media access control sublayer management entity (MAC layer magement entity, MLME); If the state value of conditional code is " unsuccessful " or timer expiry, in inside, also need to send associated confirmation to MLME, notification terminal 15 is associated unsuccessful with the first access point 13.
The 6th, after terminal 15 and the first access point 13 are successfully associated, terminal 15 utilizes the first access point 13 to carry out data communication.
The flow chart of the changing method of the link that Fig. 2 provides for the embodiment of the present invention two.As shown in the figure, the embodiment of the present invention specifically comprises the following steps:
Particularly, the handover information of the handover information of the first access point and the second access point is the information that the measurement module by the first access point or the second access point obtains test data after smoothing processing.Wherein, the method for smoothing processing can be divided into two kinds:
The first, carry out periodically on average, start a timer, selected one-period, all RSSI that collect within this cycle do one on average.If get the longer cycle, simple average also can be obtained good effect.
The second, the larger RSSI of fluctuation is taken out, then do average.
Particularly, access controller is by receiving after the handoff response information of the second access point transmission, according to this handoff response information, learn that the first link switching is to the second link, be that terminal is utilized the second access point to communicate to have replaced and utilized the first access point to communicate, therefore access controller need to upgrade the local related information of preserving, and is the associated information of terminal and the second access point by the terminal information updating associated with the first access point.
Therefore, the changing method of the disclosed link of the embodiment of the present invention, by receiving first access point associated with terminal, and the handover information of second access point associated with terminal is judged whether terminal and associated the first link switching of the first access point to terminal and associated the second link of the second access point, when determining the first link switching to the second link, to the first access point, send handover request information, the first access point receives after handover request information, carry out information interaction with the second access point, thereby complete the first link to the switching of the second link, thereby realized the seamless switching in single frequency network, but also need not revise the configuration of terminal.
The flow chart of the changing method of the link that Fig. 3 provides for the embodiment of the present invention three.As shown in the figure, the embodiment of the present invention specifically comprises the following steps:
Particularly, this handover information is the information that the measurement module by local access point obtains test data after smoothing processing.Wherein, the method for smoothing processing describes in detail in step 201, here no longer repeat specification.
Particularly, when access controller is determined the first link switching to the second link, the handover request information sending to the first access point.
Particularly, after the second access point creates the related information and service queue of terminal and the second access point, to the first access point sending node, create response message, object is to notify the first access point, and the node of the second access point creates successfully.
Therefore, the changing method of the disclosed link of the embodiment of the present invention, by sending handover information to access controller, after receiving the handover request information of access controller transmission, thereby determine the first link switching is sent and creates node solicited message to the second link and to the second access point, and carry out repeatedly information interaction with the second access point, thereby complete the first link to the switching of the second link, thereby realized the seamless switching in single frequency network, but also need not revise the configuration of terminal.
The flow chart of the changing method of the link that Fig. 4 provides for the embodiment of the present invention four.As shown in the figure, the embodiment of the present invention specifically comprises the following steps:
Particularly, this handover information is the information that the measurement module by local access point obtains test data after smoothing processing.Wherein, the method for smoothing processing describes in detail in step 201, here no longer repeat specification.
Step 406, the second access point creates response message to the first access point sending node, creates response message know that local access point completes node and creates in order to the first access point according to node.
Step 406, the second access point sends handoff response information to access controller, in order to access controller, knows that local access point completes switching.
Therefore, the changing method of the disclosed link of the embodiment of the present invention, by sending handover information to access controller, after receiving the establishment node solicited message of the first access point transmission, thereby determine the first link switching to the second link, the second access point sends redirection of router indication information and receives the packet that mutual machine sends to switch, carry out repeatedly information interaction with the second access point simultaneously, thereby complete the first link to the switching of the second link, thereby realized the seamless switching in single frequency network, but also need not revise the configuration of terminal.
The flow chart of the changing method of the link that Fig. 5 provides for the embodiment of the present invention five.As shown in the figure, the embodiment of the present invention specifically comprises the following steps:
Step 501, terminal is associated with the first access point and communicate, and the first access point communicates with access controller by eating dishes without rice or wine.
Step 502, the first access point, the second access point and access controller start cycle timer simultaneously, if do not accomplish to start cycle timer simultaneously, guarantee to start cycle timer as far as possible simultaneously.
Step 503, when the time value of setting when the cycle timer of the first access point expires, sends handover information to access controller; Meanwhile, when the time value of setting when the cycle timer of the second access point expires, to access controller, send handover information.
Step 504, after access controller receives the handover information of the first access point and the handover information of the second access point, when the time value that the cycle timer of access controller is set by the time expires, judges whether the first access point to be switched to the second access point.
Step 505, when access controller is determined terminal first link switching associated with the first access point to terminal and associated the second link of the second access point, to the first access point transmission handover request information.
Step 506, the first access point receives after handover request information, according to handover request information, determines the first link switching to the second link, cancels the associated of the first access point and terminal simultaneously.
Step 507, the first access point sends and creates node solicited message to the second access point.
Step 508, the second access point receives and creates after node solicited message, according to the related information and the service queue that create node solicited message establishment terminal and local access point, gets through the link information of terminal and local access point simultaneously.
Step 509, after definite the second access point is successfully established, sends redirection of router indication information to switch;
Step 510, switch receives after redirection of router indication information, to the second access point forwarding data bag, is business packet.
Step 511, the packet that the second access point desampler forwards, and create response message to the first access point sending node, notify the node of the first access point to create successfully.
Step 512, the second access point sends handoff response information to access controller, and notice access controller has completed the switching of the first link switching to the second link.
Step 513, access controller receives after handoff response information, and the terminal information updating associated with the first access point of this locality being preserved according to handoff response information is the associated information of terminal and the second access point.
Step 514, terminal is associated with the second access point and communicate, and the second access point communicates with access controller by eating dishes without rice or wine.
Wherein, what in the embodiment of the present invention, the transmission of all hand off signaling was used is the transmission of Ethernet interface proprietary protocol, also can use other Extended Protocol, especially the process of the data retransmission between the first access point and the second access point is used Ethernet frame head to carry out encapsulated delivery.
The flow chart of the changing method of the link that Fig. 6 provides for the embodiment of the present invention six.As shown in the figure, the embodiment of the present invention specifically comprises the following steps:
Step 601, terminal is associated with the first access point and communicate, and the first access point communicates with access controller by eating dishes without rice or wine.
Step 602, the first access point, the second access point and access controller start cycle timer simultaneously, if do not accomplish to start cycle timer simultaneously, guarantee to start cycle timer as far as possible simultaneously.
Step 603, when the time value of setting when the cycle timer of the first access point expires, sends handover information to access controller; Meanwhile, when the time value of setting when the cycle timer of the second access point expires, to access controller, send handover information.
Step 604, after access controller receives the handover information of the first access point and the handover information of the second access point, when the time value that the cycle timer of access controller is set by the time expires, judge whether terminal first link switching associated with the first access point to arrive terminal and associated the second link of the second access point.
Step 605, when access controller is determined the first link switching to the second link, sends handover request information to the first access point.
Step 606, the first access point receives after handover request information, according to handover request information, determines the first link switching to the second link, cancels the associated of the first access point and terminal simultaneously.
Step 607, the first access point sends and creates node solicited message to the second access point.
Step 608, the second access point receives and creates after node solicited message, according to the related information and the service queue that create node solicited message and create terminal and local access point, stop the scheduling of the downlink data of eating dishes without rice or wine of terminal, the reception of the data of eating dishes without rice or wine that stops terminal and the replying of upstream data that stops terminal simultaneously.
Step 609, the second access point, after definite node is successfully established, creates response message to the first access point sending node, notifies the node of the first access point to create successfully.
Step 610, the first access point receives the first access point sending node and creates after response message, stops receiving upstream data and stopping replying of described upstream data.
Step 611, the first access point sends upstream data to the second access point and receives solicited message;
Step 612, the second access point starts the reception of upstream data and replying of upstream data, and turns to frame information to switch transmission data flow;
Step 613, switch receives data flow and turns to after frame information, to the second access point forwarding data bag, is business packet.
Step 614, the packet that the second access point desampler forwards is downlink data packet, and sends upstream data reception response message to the first access point.
Step 615, the upstream data that the first access point receives the second access point transmission receives after response message, starts timer, and waiting timer expires or downlink data is sent completely, and to the second access point sending node, has set up information.
Step 616, the second access point receives the node of the first access point transmission and has set up after information, start the scheduling of downlink data, and send handoff response information to access controller, notice access controller has completed the switching of the first link switching to the second link.
Step 617, access controller receives after handoff response information, and the terminal information updating associated with the first access point of this locality being preserved according to handoff response information is the associated information of terminal and the second access point.
Step 618, access controller sends and has switched information to the second access point, for the second access point, knows that switching completes.
Step 619, terminal is associated with the second access point and communicate, and the second access point communicates with access controller by eating dishes without rice or wine.
Wherein, what in the embodiment of the present invention, the transmission of all hand off signaling was used is the transmission of Ethernet interface proprietary protocol, also can use other Extended Protocol, especially the process of the data retransmission between the first access point and the second access point is used Ethernet frame head to carry out encapsulated delivery.Particularly, between the first access point and the second access point, by proprietary protocol, set up chain of command forwarding tunnel.The information of the first access point and the second access point is synchronously passed through, control and configuration protocol (Control And Provisioning of Wireless Access Points Protocol through WAP (wireless access point), CAPWAP) after the forwarding of application layer, then the information of carrying out synchronously configures.Can avoid like this using and eat dishes without rice or wine to transmit switching command, because the error probability of the transmission of eating dishes without rice or wine is higher, the fail safe of the transmission of eating dishes without rice or wine is very low, is also easy to be intercepted and captured by malice third party simultaneously, therefore, adopts wire transmission provided by the invention safer.
In addition, in above-mentioned all embodiment, terminal is associated with the first access point, when terminal being switched to the second access point association, the first access point and the second access point need to be synchronous by information, identical information on foundation and the first access point on the second access point.Wherein, this information comprises identical medium access control (Media Access Control, MAC) address, identical AID, identical transmission sign (Transport Identity, TID), identical security configuration, identical rate configuration information, identical aggregation configuration information, by configuration, sets up the link of the second access point and terminal.When terminal moves in single frequency network coverage, determine terminal be switched to terminal with second access point associated handover decisions associated with the first access point to be determined by access controller, also can can't help access controller to determine.
The schematic diagram of the controller that Fig. 7 provides for the embodiment of the present invention seven.This controller is for carrying out the changing method that the embodiment of the present invention two, five and six arbitrary embodiment provide, with this switching device shifter for hardware device be access controller.The switching device shifter of the access point that as described in Figure, the embodiment of the present invention provides specifically comprises: the first receiving element 71, judging unit 72, the first transmitting element 73 and updating block 74.
The first receiving element 71 is for receiving the handover information of the first access point and the handover information of the second access point, and the handover information of the handover information of the first access point and the second access point is transferred to judging unit 72; Judging unit 72 is for receiving the handover information of the first access point and the handover information of the second access point from the first receiving element 71, according to the handover information of the handover information of the first access point and the second access point, judge whether terminal first link switching associated with described the first access point to described terminal and associated the second link of described the second access point, thereby obtain judged result information, and give the first transmitting element 73 by judged result communication; The first transmitting element 73 is for receiving judged result information from judging unit, when determining the first link switching to the second link, to the first access point, send handover request information, the switching to the second link according to handover request information and executing the first link in order to the first access point; Updating block 74, for when the first link switching is after the second link, is the associated information of terminal and the second access point by the terminal information updating associated with the first access point of this locality preservation.
Preferably, judging unit 72 in the switching device shifter of the access point that the embodiment of the present invention provides is specifically for according to the handover information of the handover information of the first access point, the second access point, according to default time value, judges whether that first link switching associated with described the first access point of terminal is just to described terminal and associated the second link of described the second access point; Default time value is to be set by local cycle timer.
Preferably, the controller that the embodiment of the present invention provides also further comprises: the second transmitting element 75.
The second transmitting element 75, for sending to the second access point the information of having switched, completes information in order to the second access point according to switching and knows that access controller is the associated information of terminal and the second access point by the terminal information updating associated with the first access point of this locality preservation.
Therefore, the disclosed controller of the embodiment of the present invention, by receiving first access point associated with terminal, and the handover information of second access point associated with terminal is judged whether terminal and associated the first link switching of described the first access point to described terminal and associated the second link of described the second access point, when determining when the first access point is switched to the second access point, to the first access point, send handover request information, the first access point receives after handover request information, carry out information interaction with the second access point, thereby complete the first link to the switching of the second link, thereby realized the seamless switching in single frequency network, but also need not revise the configuration of terminal.
The schematic diagram of the access point that Fig. 8 provides for the embodiment of the present invention eight.This access point is for carrying out the changing method that the embodiment of the present invention three, five and six arbitrary embodiment provide, with this switching device shifter for hardware device be first access point associated with terminal.The switching device shifter of the access point that as described in Figure, the embodiment of the present invention provides specifically comprises: the first transmitting element 801, the first receiving element 802, the second transmitting element 804 and the second receiving element 804.
The first transmitting element 801 is for sending handover information to access controller, in order to described access controller, according to described handover information, judge whether terminal first link switching associated with the first access point to described terminal and associated the second link of the second access point, and obtain judged result; The handover request information that the first receiving element 802 sends for receiving described access controller, described handover request information is indicated described judged result, and described judged result is sent to the second transmitting element; The second transmitting element 803 is for receiving described judged result from described the first receiving element, if described in judgment result is that described the first link switching to described the second link, to described the second access point, send and create node solicited message; The establishment of the node to the described establishment node solicited message response message that the second receiving element 804 sends for receiving described the second access point, described response message completes described the first link switching to the node establishment of described the second link for the feedback of described establishment node solicited message being used to indicate to described the second access point.
Preferably, the first transmitting element 801 of the access point that the embodiment of the present invention provides, specifically for according to default time value, sends handover information to access controller; Default time value is to be set by local cycle timer.
The switching device shifter of the access point that preferably, the embodiment of the present invention provides also further comprises: stop element 807.
Preferably, the access point that the embodiment of the present invention provides also further comprises: the 3rd transmitting element 808, the 3rd receiving element 809, start unit 810 and the 4th transmitting element 811.
The 3rd transmitting element 808 receives solicited message for sending upstream data to the second access point, receives solicited message start the reception of upstream data and replying of upstream data in order to the second access point according to upstream data; The 3rd receiving element 809 receives response message for the upstream data that receives the second access point and send, and upstream data is received to response message is transferred to start unit 810; Start unit 810 receives response message for receiving upstream data from the 3rd receiving element 809, start timer, and the time value that timer is set is transferred to the 4th transmitting element 811; The 4th transmitting element 811 is for receiving from start unit 810 time value that timer is set, the time value of setting according to timer, to the second access point sending node, set up information, in order to the second access point, according to node, set up information and started the scheduling to downlink data.
Therefore, the disclosed access point of the embodiment of the present invention, the first access point sends handover information to access controller, after receiving the handover request information of access controller transmission, thereby determine and the first access point is switched to the second access point and sends and create node solicited message to the second access point, and carry out repeatedly information interaction with the second access point, thereby complete the first access point to the switching of the second access point, thereby realized the seamless switching in single frequency network, but also need not revise the configuration of terminal.
The schematic diagram of the access point that Fig. 9 provides for the embodiment of the present invention nine.This switching device shifter is for carrying out the changing method that the embodiment of the present invention four, five and six arbitrary embodiment provide, with this switching device shifter for hardware device be the second access point.The switching device shifter of the access point that as described in Figure, the embodiment of the present invention provides specifically comprises: the first transmitting element 901, the first receiving element 902, creating unit 903, the second transmitting element 904 and the 3rd transmitting element 905.
The first transmitting element 901 is for sending handover information to access controller; The establishment node solicited message that the first receiving element 902 sends for receiving the first access point, and will create node request message transmission to creating unit 903; Creating unit 903 is for receiving and create node solicited message from the first receiving element 902, according to the related information and the service queue that create node solicited message establishment terminal and local access point; The second transmitting element 904, for creating response message to the first access point sending node, creates response message in order to the first access point according to node and knows that local access point completes the first link switching to the node establishment of the second link; The 3rd transmitting element 905, for sending handoff response information to access controller, knows that in order to access controller local access point completes switching.
Preferably, the access point that the embodiment of the present invention provides also further comprises: the 4th transmitting element 906 and the second receiving element 907.
The 4th transmitting element 906, for sending redirection of router indication information to switch, is redirected indication information to local access point forwarding data bag in order to switch basis; The packet that the second receiving element 907 forwards for desampler.
Preferably, the first transmitting element 901 of the access point that the embodiment of the present invention provides, specifically for according to default time value, sends handover information to access controller.Wherein, default time value is to be set by local cycle timer
Preferably, the creating unit 903 of the access point that the embodiment of the present invention provides is specifically for according to the related information and the service queue that create node solicited message and create terminal and local access point, stops the scheduling of the downlink data of eating dishes without rice or wine of terminal, the reception of the data that stop eating dishes without rice or wine and the replying of upstream data that stop terminal simultaneously.
Preferably, also further comprising of the access point that the embodiment of the present invention provides: the 3rd receiving element 908, the first start unit 909, the 5th transmitting element 910, the 4th receiving element 911, the 6th transmitting element 912, the 5th receiving element 913 and the second start unit 914.
The upstream data reception solicited message that the 3rd receiving element 908 sends for receiving the first access point, and upstream data is received to request message transmission to the first start unit; The first start unit 909 receives solicited message for receiving upstream data from the 3rd receiving element, according to upstream data, receives solicited message, starts the reception of upstream data and replying of upstream data; The 5th transmitting element 910 turns to frame information for sending data flow to switch; The packet that the 4th receiving element 911 forwards for desampler; The 6th transmitting element 912 receives response message for sending upstream data to the first access point, receives response message start timer in order to the first access point according to upstream data; The 5th receiving element 913 has been set up information for receiving the node of the first access point transmission; The second start unit 914 is for starting the scheduling to downlink data.
Preferably, the access point that the embodiment of the present invention provides also further comprises: the 6th receiving element 915 and determining unit 916.
The 6th receiving element 915 completes information for receiving the switching of access controller transmission, and switching is completed to communication to determining unit; Determining unit 916 is for receiving from the 6th receiving element the information of having switched, completes information determine that access controller is that the associated information of terminal and the second access point completes the first access point and is switched to the second access point by the terminal information updating associated with the first access point of this locality preservation according to switching.
Therefore, the disclosed access point of the embodiment of the present invention, by sending handover information to access controller, after receiving the establishment node solicited message of the first access point transmission, thereby determine the first access point is switched to the second access point, the second access point sends redirection of router indication information and receives the packet that mutual machine sends to switch, carry out repeatedly information interaction with the second access point simultaneously, thereby complete the first access point to the switching of the second access point, thereby realized the seamless switching in single frequency network, but also need not revise the configuration of terminal.
The embodiment of the present invention also provides a kind of wireless communication system.This system specifically comprises: access point, switch and terminal that the access point that the controller that the embodiment of the present invention seven provides, the embodiment of the present invention eight provide, the embodiment of the present invention nine provide.
Professional should further recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software is clearly described, composition and the step of each example described according to function in the above description in general manner.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.
The software module that the method for describing in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to carry out, or the combination of the two is implemented.Software module can be placed in the storage medium of any other form known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection range being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (27)
1. a changing method for link, is characterized in that, described method comprises:
Receive the handover information of the first access point and the handover information of the second access point;
According to the handover information of the handover information of described the first access point and described the second access point, judge whether terminal first link switching associated with described the first access point to described terminal and associated the second link of described the second access point;
When determining described the first link switching to described the second link, to described the first access point transmission handover request information, the switching to described the second link according to the first link described in described handover request information and executing in order to described the first access point;
When described the first link switching is after described the second link, the terminal information updating associated with described the first access point that this locality is preserved is the associated information of described terminal and described the second access point.
2. the changing method of link according to claim 1, it is characterized in that, described according to the handover information of the handover information of described the first access point and described the second access point, judge whether terminal first link switching associated with described the first access point to comprise to described terminal and associated the second link of described the second access point:
According to the handover information of the handover information of described the first access point, described the second access point and according to default time value, judge whether described the first link switching to described the second link; Described default time value is to be set by local cycle timer.
3. the changing method of link according to claim 1, is characterized in that, the described described terminal information updating associated with described the first access point that this locality is preserved is that the associated information of described terminal and described the second access point also comprises afterwards:
To described the second access point, send the information of having switched, in order to described the second access point, according to described switching, complete information and know that described access controller is the associated information of described terminal and described the second access point by the described terminal information updating associated with described the first access point of this locality preservation.
4. a changing method for link, is characterized in that, described method comprises:
To access controller, send handover information, in order to described access controller, judge whether terminal first link switching associated with the first access point to described terminal and associated the second link of the second access point and obtain judged result;
Receive the handover request information that described access controller sends, described handover request information is indicated described judged result;
If described in judgment result is that described the first link switching to described the second link, to described the second access point, send and create node solicited message;
Receive the establishment of the node to the described establishment node solicited message response message that described the second access point sends, described response message completes described the first link switching to the node establishment of described the second link for the feedback of described establishment node solicited message being used to indicate to described the second access point.
5. the changing method of link according to claim 4, is characterized in that, describedly to access controller, sends handover information and is specially:
According to default time value, to access controller, send handover information; Described default time value is to be set by local cycle timer.
6. the changing method of link according to claim 4, is characterized in that, the node that described the second access point of described reception sends also comprises after creating response message:
Stop receiving upstream data and stopping replying of described upstream data.
7. the changing method of link according to claim 4, is characterized in that, describedly according to described node, creates response message and determines that described the second access point completes node and also comprises after creating:
To described the second access point, send upstream data and receive solicited message, in order to described the second access point, according to described upstream data, receive solicited message and start the reception of upstream data and replying of described upstream data;
Receive the upstream data reception response message that described the second access point sends;
Start timer;
The time value of setting according to described timer, has set up information to described the second access point sending node, has set up information start the scheduling to downlink data in order to described the second access point according to described node.
8. a changing method for link, is characterized in that, described method comprises:
To access controller, send handover information;
Receive the establishment node solicited message that the first access point sends;
According to described establishment node solicited message, create related information and the service queue of terminal and local access point;
To described the first access point sending node, create response message, in order to described the first access point, according to described node, create response message and know that local access point completes the first link switching to the node establishment of the second link;
To access controller, send handoff response information, in order to described access controller, know that described local access point completes switching.
9. the changing method of link according to claim 8, is characterized in that, describedly also comprises after creating the related information of described terminal and local access point and service queue according to described establishment node solicited message:
To switch, send redirection of router indication information, in order to described switch according to described redirected indication information to described local access point forwarding data bag;
Receive the packet that described switch forwards.
10. the changing method of link according to claim 8, is characterized in that, describedly to access controller, sends handover information and is specially:
According to default time value, to access controller, send handover information; Described default time value is to be set by local cycle timer.
The changing method of 11. links according to claim 8, is characterized in that, described related information and the service queue that creates described terminal and local access point according to described establishment node solicited message is specially:
According to described establishment node solicited message, create related information and the service queue of described terminal and local access point, stop the scheduling of the downlink data of eating dishes without rice or wine of terminal, the reception of the data of eating dishes without rice or wine described in stopping and the replying of upstream data that stopping described terminal simultaneously.
The changing method of 12. links according to claim 8, is characterized in that, describedly after described the first access point sending node creates response message, also comprises:
Receive the upstream data reception solicited message that described the first access point sends;
According to upstream data, receive solicited message, start the reception of upstream data and replying of described upstream data;
To switch, send data flow and turn to frame information;
Receive the packet that described switch forwards;
To described the first access point, send upstream data and receive response message, in order to described the first access point, according to described upstream data, receive response message and start timer;
The node that receives described the first access point transmission has been set up information;
The scheduling of startup to downlink data.
The changing method of 13. links according to claim 8, is characterized in that, describedly after access controller sends handoff response information, also comprises:
The switching that receives described access controller transmission completes information;
According to described switching, completing the described terminal information updating associated with described the first access point that information determines that described access controller is preserved this locality is that the associated information of described terminal and described the second access point completes described the first access point and is switched to described the second access point.
14. 1 kinds of controllers, is characterized in that, described controller comprises:
The first receiving element, for receiving the handover information of the first access point and the handover information of the second access point, and is transferred to judging unit by the handover information of the handover information of described the first access point and the second access point;
Judging unit, for receiving the handover information of described the first access point and the handover information of the second access point from described the first receiving element, according to the handover information of the handover information of described the first access point and described the second access point, judge whether terminal first link switching associated with described the first access point to described terminal and associated the second link of described the second access point, thereby obtain judged result information, and give the first transmitting element by described judged result communication;
The first transmitting element, for receiving described judged result information from described judging unit, when determining described the first link switching to described the second link, to described the first access point, send handover request information, the switching to described the second link according to the first link described in described handover request information and executing in order to described the first access point;
Updating block, for when described the first link switching is after described the second link, is the associated information of described terminal and described the second access point by the described terminal information updating associated with described the first access point of this locality preservation.
15. controllers according to claim 14, it is characterized in that, described judging unit, specifically for according to the handover information of the handover information of described the first access point, described the second access point and according to default time value, judges whether to arrive and described the second link with described the first link switching; Described default time value is to be set by local cycle timer.
16. controllers according to claim 14, is characterized in that, described controller also comprises:
The second transmitting element, for sending to described the second access point the information of having switched, in order to described the second access point, according to described switching, complete information and know that described access controller is the associated information of described terminal and described the second access point by the described terminal information updating associated with described the first access point of this locality preservation.
17. 1 kinds of access points, is characterized in that, described access point comprises:
The first transmitting element, for sending handover information to access controller, in order to described access controller, according to described handover information, judge whether terminal first link switching associated with the first access point to described terminal and associated the second link of the second access point, and obtain judged result;
The first receiving element, the handover request information sending for receiving described access controller, described handover request information is indicated described judged result, and described judged result is sent to the second transmitting element;
The second transmitting element, for receiving described judged result from described the first receiving element, if described in judgment result is that described the first link switching to described the second link, to described the second access point, send and create node solicited message;
The second receiving element, be used for receiving the establishment of the node to the described establishment node solicited message response message that described the second access point sends, described response message completes described the first link switching to the node establishment of described the second link for the feedback of described establishment node solicited message being used to indicate to described the second access point.
18. access points according to claim 17, is characterized in that, described the first transmitting element, specifically for according to default time value, sends handover information to access controller; Described default time value is to be set by local cycle timer.
The switching device shifter of 19. access points according to claim 17, is characterized in that, described access point also comprises:
Stop element, receives upstream data and stops replying of described upstream data for stopping.
The switching device shifter of 20. access points according to claim 17, is characterized in that, described access point also comprises:
The 3rd transmitting element, receives solicited message for sending upstream data to described the second access point, receives solicited message start the reception of upstream data and replying of described upstream data in order to described the second access point according to described upstream data;
The 3rd receiving element, the upstream data reception response message sending for receiving described the second access point, and described upstream data reception response message is transferred to the second start unit;
Start unit, receives response message for receive described upstream data from described the 3rd receiving element, start timer, and the time value that described timer is set is transferred to the 4th transmitting element;
The 4th transmitting element, for receive the time value that described timer is set from described the second start unit, the time value of setting according to described timer, to described the second access point sending node, set up information, in order to described the second access point, according to described node, set up information and started the scheduling to downlink data.
21. 1 kinds of access points, is characterized in that, described access point comprises:
The first transmitting element, for sending handover information to access controller;
The first receiving element, the establishment node solicited message sending for receiving the first access point, and by described establishment node request message transmission to creating unit;
Creating unit, for receive described establishment node solicited message from described the first receiving element, creates related information and the service queue of described terminal and local access point according to described establishment node solicited message;
The second transmitting element, for creating response message to described the first access point sending node, creates response message in order to described the first access point according to described node and knows that local access point completes the first link switching to the node establishment of the second link;
The 3rd transmitting element, for sending handoff response information to access controller, knows that in order to described access controller described local access point completes switching.
22. access points according to claim 21, is characterized in that, described access point also comprises:
The 4th transmitting element, for send redirection of router indication information to switch, in order to described switch according to described redirected indication information to described local access point forwarding data bag;
The second receiving element, the packet forwarding for receiving described switch.
23. access points according to claim 21, is characterized in that, described the first transmitting element, specifically for according to default time value, sends handover information to access controller; Described default time value is to be set by local cycle timer.
24. access points according to claim 21, it is characterized in that, described creating unit is specifically for creating related information and the service queue of described terminal and local access point according to described establishment node solicited message, stop the scheduling of the downlink data of eating dishes without rice or wine of terminal, the reception of the data of eating dishes without rice or wine described in stopping and the replying of upstream data that stopping described terminal simultaneously.
25. access points according to claim 21, is characterized in that, described access point also comprises:
The 3rd receiving element, the upstream data reception solicited message sending for receiving described the first access point, and described upstream data is received to request message transmission to the second start unit;
The first start unit, receives solicited message for receive described upstream data from described the 3rd receiving element, according to upstream data, receives solicited message, starts the reception of upstream data and replying of described upstream data;
The 5th transmitting element, turns to frame information for sending data flow to switch;
The 4th receiving element, the packet forwarding for receiving described switch;
The 6th transmitting element, receives response message for sending upstream data to described the first access point, receives response message start timer in order to described the first access point according to described upstream data;
The 5th receiving element, has set up information for receiving the node of described the first access point transmission;
The second start unit, for starting the scheduling to downlink data.
26. access points according to claim 21, is characterized in that, described access point also comprises:
The 6th receiving element, completes information for receiving the switching of described access controller transmission, and described switching is completed to communication to described determining unit;
Determining unit, complete information for receiving described switching from described the 6th receiving element, according to described switching, completing the described terminal information updating associated with described the first access point that information determines that described access controller is preserved this locality is that the associated information of described terminal and described the second access point completes described the first access point and is switched to described the second access point.
27. 1 kinds of wireless communication systems, it is characterized in that, described system comprises: according to claim 14 to the controller described in 16 any one, according to claim 17 to the access point described in 20 any one, according to access point, switch and terminal described in claim 21 to 26 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210333487.6A CN103686891A (en) | 2012-09-11 | 2012-09-11 | Link switching method, controller, access point (AP) and wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210333487.6A CN103686891A (en) | 2012-09-11 | 2012-09-11 | Link switching method, controller, access point (AP) and wireless communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103686891A true CN103686891A (en) | 2014-03-26 |
Family
ID=50322858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210333487.6A Pending CN103686891A (en) | 2012-09-11 | 2012-09-11 | Link switching method, controller, access point (AP) and wireless communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103686891A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104363581A (en) * | 2014-11-26 | 2015-02-18 | 福建星网锐捷网络有限公司 | Determination method of associated terminal and related device |
| CN104980977A (en) * | 2015-06-30 | 2015-10-14 | 青岛海尔智能家电科技有限公司 | WiFi access point switching method and device |
| CN107801218A (en) * | 2016-09-06 | 2018-03-13 | 华为技术有限公司 | The control method and device of aggregate frame in access point switching |
| WO2018064897A1 (en) * | 2016-10-08 | 2018-04-12 | 中兴通讯股份有限公司 | Wireless fidelity connection hotspot switching method and hotspot access device |
| CN110139341A (en) * | 2018-02-08 | 2019-08-16 | 莱特普茵特公司 | For controlling the system and method for wireless access point used during test radio frequency DUT |
| WO2019183911A1 (en) * | 2018-03-30 | 2019-10-03 | Zte Corporation | Secondary communication node change |
| CN110351893A (en) * | 2018-04-01 | 2019-10-18 | 财团法人工业技术研究院 | Distribute the method for uplink data flow and the user equipment using it |
| CN112543125A (en) * | 2020-12-22 | 2021-03-23 | 宁波均联智行科技股份有限公司 | Serial communication system and link switching method applied to same |
| CN112702770A (en) * | 2019-10-23 | 2021-04-23 | 上海华为技术有限公司 | Switching control method and related equipment |
| WO2022000579A1 (en) * | 2020-06-29 | 2022-01-06 | 成都极米科技股份有限公司 | Multi-link terminal and method and apparatus thereof for executing link switching, and storage medium |
| CN114125930A (en) * | 2020-08-28 | 2022-03-01 | 华为技术有限公司 | Method, device and system for switching access points |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438789A (en) * | 2002-02-10 | 2003-08-27 | 华为技术有限公司 | Method for swhiching over between swith-in points moving terminal in winefree local network |
| CN1756412A (en) * | 2004-09-30 | 2006-04-05 | 中兴通讯股份有限公司 | Station switching method in WLAN |
| CN1756206A (en) * | 2004-09-30 | 2006-04-05 | 中兴通讯股份有限公司 | Method for switching station within WLAN |
| CN101472306A (en) * | 2007-12-29 | 2009-07-01 | 华为技术有限公司 | Method, system and device for switching between APs |
| CN101631371A (en) * | 2009-08-27 | 2010-01-20 | 上海交通大学 | Zero delay switching method of wireless access points |
| CN101986750A (en) * | 2009-07-29 | 2011-03-16 | 上海华为技术有限公司 | Switching control method, device and system |
-
2012
- 2012-09-11 CN CN201210333487.6A patent/CN103686891A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438789A (en) * | 2002-02-10 | 2003-08-27 | 华为技术有限公司 | Method for swhiching over between swith-in points moving terminal in winefree local network |
| CN1756412A (en) * | 2004-09-30 | 2006-04-05 | 中兴通讯股份有限公司 | Station switching method in WLAN |
| CN1756206A (en) * | 2004-09-30 | 2006-04-05 | 中兴通讯股份有限公司 | Method for switching station within WLAN |
| CN101472306A (en) * | 2007-12-29 | 2009-07-01 | 华为技术有限公司 | Method, system and device for switching between APs |
| CN101986750A (en) * | 2009-07-29 | 2011-03-16 | 上海华为技术有限公司 | Switching control method, device and system |
| CN101631371A (en) * | 2009-08-27 | 2010-01-20 | 上海交通大学 | Zero delay switching method of wireless access points |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104363581A (en) * | 2014-11-26 | 2015-02-18 | 福建星网锐捷网络有限公司 | Determination method of associated terminal and related device |
| CN104980977A (en) * | 2015-06-30 | 2015-10-14 | 青岛海尔智能家电科技有限公司 | WiFi access point switching method and device |
| CN107801218B (en) * | 2016-09-06 | 2021-02-12 | 华为技术有限公司 | Control method and device for aggregating frames in access point switching |
| CN107801218A (en) * | 2016-09-06 | 2018-03-13 | 华为技术有限公司 | The control method and device of aggregate frame in access point switching |
| WO2018064897A1 (en) * | 2016-10-08 | 2018-04-12 | 中兴通讯股份有限公司 | Wireless fidelity connection hotspot switching method and hotspot access device |
| CN107920353A (en) * | 2016-10-08 | 2018-04-17 | 中兴通讯股份有限公司 | A kind of method and hot spot access device of Wireless Fidelity connection switching hot spot |
| CN110139341A (en) * | 2018-02-08 | 2019-08-16 | 莱特普茵特公司 | For controlling the system and method for wireless access point used during test radio frequency DUT |
| CN110139341B (en) * | 2018-02-08 | 2023-11-24 | 莱特普茵特公司 | System and method for controlling use of a wireless access point during testing of a radio frequency DUT |
| CN111656817A (en) * | 2018-03-30 | 2020-09-11 | 中兴通讯股份有限公司 | Assisting communication node changes |
| CN111656817B (en) * | 2018-03-30 | 2021-11-23 | 中兴通讯股份有限公司 | Assisting communication node changes |
| WO2019183911A1 (en) * | 2018-03-30 | 2019-10-03 | Zte Corporation | Secondary communication node change |
| US11310704B2 (en) | 2018-03-30 | 2022-04-19 | Zte Corporation | Secondary communication node change |
| CN110351893A (en) * | 2018-04-01 | 2019-10-18 | 财团法人工业技术研究院 | Distribute the method for uplink data flow and the user equipment using it |
| CN110351893B (en) * | 2018-04-01 | 2021-06-01 | 财团法人工业技术研究院 | Method of distributing uplink data stream and user equipment using the same |
| CN112702770B (en) * | 2019-10-23 | 2022-05-13 | 上海华为技术有限公司 | Switching control method and related equipment |
| CN112702770A (en) * | 2019-10-23 | 2021-04-23 | 上海华为技术有限公司 | Switching control method and related equipment |
| WO2022000579A1 (en) * | 2020-06-29 | 2022-01-06 | 成都极米科技股份有限公司 | Multi-link terminal and method and apparatus thereof for executing link switching, and storage medium |
| CN114125930A (en) * | 2020-08-28 | 2022-03-01 | 华为技术有限公司 | Method, device and system for switching access points |
| CN114125930B (en) * | 2020-08-28 | 2024-03-26 | 华为技术有限公司 | Method, device and system for switching access points |
| CN112543125A (en) * | 2020-12-22 | 2021-03-23 | 宁波均联智行科技股份有限公司 | Serial communication system and link switching method applied to same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103686891A (en) | Link switching method, controller, access point (AP) and wireless communication system | |
| CN106793169B (en) | Configuration method, access method and the device of inactive state, base station and terminal | |
| US10575360B2 (en) | Apparatus and method for providing multi-connection using different wireless connection technologies in wireless communication system | |
| EP3152954B1 (en) | Radio resource control (rrc) protocol for integrated wlan/3gpp radio access technologies | |
| WO2019184404A1 (en) | Information transmission and reception method and apparatus | |
| CN105850179B (en) | Systems, methods, and devices for selective interference coordination in cellular protocols | |
| US11924674B2 (en) | Data transmission method and apparatus | |
| KR102684275B1 (en) | Method and apparatus for reporting the selected PLMN in RRC_INACTIVE UE in the next generation wireless communication systems | |
| CN110169131A (en) | Switch between the RAT of Successor-generation systems | |
| WO2018010689A1 (en) | Group management method utilized in coordinated multipoint, device, and system | |
| TWI498023B (en) | Communications apparatus and method for reducing power consumption of a communications apparatus in wlan system | |
| CN102196499B (en) | Method for realizing access control, central controller and access point (AP) device | |
| CN101272621A (en) | User's set ability information transmission system, user's set and network appliance | |
| CN107439034A (en) | The method and apparatus for authorizing auxiliary access technology are supported in wireless communication system | |
| CN104885522B (en) | Method, apparatus and computer program product for improving mobile communications | |
| US20210243638A1 (en) | Method and apparatus for synchronizing packet duplication operation between base station nodes in mobile communication system | |
| CN104244426A (en) | Resource distribution method and device for data radio bear (DRB) | |
| CN103718477B (en) | Multi-network-based simultaneous data transmission method and apparatus applied to same | |
| WO2014149647A1 (en) | Techniques for selecting an access point for wireless network discovery | |
| CN109075929A (en) | User facility operation scheme control | |
| US12058558B2 (en) | Method and apparatus for synchronizing packet duplication operation between base station nodes in mobile communication system | |
| CN104954968A (en) | Method and system for device-to-device communication on wireless local area network frequency band | |
| CN108260167A (en) | Wireless client STA loaming methods and device | |
| CN103973401A (en) | User plane data information reporting method, device and system | |
| CN104955128A (en) | Load information transmission method, load information transmission system and network element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |