CN104735731B - Node fast handoff mechanisms under wireless multi-hop chain topological network - Google Patents
Node fast handoff mechanisms under wireless multi-hop chain topological network Download PDFInfo
- Publication number
- CN104735731B CN104735731B CN201510132098.0A CN201510132098A CN104735731B CN 104735731 B CN104735731 B CN 104735731B CN 201510132098 A CN201510132098 A CN 201510132098A CN 104735731 B CN104735731 B CN 104735731B
- Authority
- CN
- China
- Prior art keywords
- node
- connection
- base
- mobile terminal
- station node
- 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.)
- Active
Links
Abstract
The present invention relates to the node fast handoff mechanisms under a kind of wireless multi-hop chain topological network, node fast handoff mechanisms under the wireless multi-hop chain topological network, in mobile terminal with connecting in the cordless communication network of base-station node wireless connection, connection base-station node energy and the connection forward direction neighbor base stations node of base-station node, backward neighbor base stations node and connect neighbor base station node and communicate, to obtain the forward direction neighbor base stations node, backward neighbor base stations node and connect the corresponding connection communication information of neighbor base station node；Mobile terminal is mobile and triggering is connected when switching, connection base-station node determines the moving direction of the mobile terminal, and the base station connection information that can be accessed on mobile terminal moving direction is transmitted to mobile terminal, so that mobile terminal can switch according to the base station connection information that can be accessed of reception and be connected to required target BS node.The present invention can reduce switching and expend the time, meet the seamless switching of business datum, securely and reliably.
Description
Technical field
The present invention relates to a kind of node fast switch over method, the node under especially a kind of wireless multi-hop chain topological network
Fast handoff mechanisms belong to the technical field of wireless communication.
Background technology
In moving communicating field, switching has become a kind of technology of key.When mobile terminal is from a cell（Node or
The coverage area of node）When being moved to another cell, in order to keep mobile subscriber's not interrupt communication, progress node is needed to cut
It changes.Handoff technique is basis and the important technology that mobile terminal establishes reliable mobile communication between numerous communication systems, cell,
When suitable for mobile terminal, communication or signal reduce between different community, between different frequency situations such as signal behavior.
Since whenever mobile terminal can only establish connection with a wireless access point, so mobile terminal and access point
When switching over, the service quality of transmission is influenced very big, packet loss, switching delay and transmission jitter during switching are all to influence
One of principal element of wireless communication quality.From the angle of network efficiency, when mobile terminal is in unsuitable small
When area is communicated, the communication quality of itself can be not only influenced, while can also increase the load of whole network or even increase to it
The interference of his user.In order to reduce the adverse effect that the system of being switched to is brought, it is necessary to how consider from switching delay angle is reduced
It is effective to reduce switching time, it is the key that handover mechanism.
Invention content
The purpose of the present invention is overcoming the deficiencies in the prior art, provide under a kind of wireless multi-hop chain topological network
Node fast handoff mechanisms, switching can be reduced and expend the time, meet the seamless switching of business datum, securely and reliably.
According to technical solution provided by the invention, the node under the wireless multi-hop chain topological network is switched fast machine
System, in mobile terminal with connecting in the cordless communication network of base-station node wireless connection, connection base-station node can be with the connection
The forward direction neighbor base stations node of base-station node, backward neighbor base stations node and connect the communication of neighbor base station node, to obtain
To neighbor base stations node, backward neighbor base stations node and connect the corresponding connection communication information of neighbor base station node before stating；
Mobile terminal is mobile and triggering is connected when switching, and connection base-station node determines the moving direction of the mobile terminal,
And the base station connection information that can be accessed on mobile terminal moving direction is transmitted to mobile terminal, so that mobile terminal energy root
Switch according to the base station connection information that can be accessed of reception and be connected to required target BS node.
For mobile terminal after the target BS node for determining switching connection, mobile terminal first stores data flow to be sent,
After switching is connected to target BS node, then by store data flow to be sent be sent to switching connection target BS section
Point.
It connects the neighbours that base-station node is included to the connection communication information that mobile terminal transmits on moving direction and connects base station
Connect the connection communication information and in the direction of movement of neighbor base station node between in the connection communication information of node, moving direction
Connection base-station node is not connected with the connection communication information of sector with mobile terminal.
The connection communication information that neighbours on moving direction connect base-station node is led to be preceding to the connection of neighbor base stations node
The connection communication information of letter information or backward neighbor base stations node；The connection communication information includes the terminal device connected
Information and the maximum terminal quantity information that can be accommodated.
The energy access base station link information includes the ID values of target BS and connection frequency point.
Mobile terminal is mobile and signal strength of the condition of triggering connection switching including connection base-station node connection sector is small
Neighbours connect the signal strength of base-station node more than switching connection door in connection handoff threshold value, moving direction in mobile terminal
Neighbours connect the signal strength of base-station node more than neighbours company on switching connection threshold and moving direction on limit value, moving direction
The signal strength for connecing base-station node is more than the signal strength of connection base-station node connection sector or connection base-station node connection sector
Signal strength be less than connection handoff threshold value and moving direction between connect neighbor base station node signal strength be more than connection cut
Change threshold value.
Advantages of the present invention：By the moving direction of connection base-station node judgement mobile terminal, in the shifting for determining mobile terminal
Behind dynamic direction, notice mobile terminal device needs the target BS node switched, is connected to so that mobile terminal can be switched fast
The target BS node needed saves the process of traditional switching flow scanning, greatly shortens the time of switching.
Description of the drawings
Fig. 1 is schematic diagram of the mobile terminal of the present invention with frequency switching.
Fig. 2 is the schematic diagram of mobile terminal alien frequencies of the present invention switching.
Reference sign：1- first base stations, the second base stations of 2-, 3- thirds base station and 4- mobile terminals.
Specific embodiment
With reference to specific drawings and examples, the invention will be further described.
The time is expended in order to reduce switching, meets the seamless switching of business datum, the present invention is in mobile terminal 4 with connecting
In the cordless communication network of base-station node wireless connection, connection base-station node can be with forward direction neighbours' base of the connection base-station node
Tiny node, backward neighbor base stations node and connect the communication of neighbor base station node, with obtain the forward direction neighbor base stations node, after
To neighbor base stations node and connect the corresponding connection communication information of neighbor base station node；
When mobile terminal 4 moves and triggers connection switching, connection base-station node determines the mobile side of the mobile terminal 4
To, and the base station connection information that can be accessed on 4 moving direction of mobile terminal is transmitted to mobile terminal 4, so that mobile whole
End 4 can switch according to the base station connection information that can be accessed of reception and be connected to required target BS node.
Specifically, the cordless communication network includes wireless chain topological network, similarly suitable for tree topology network
It should.In a communication network, each connection base-station node is equal there are two sector, wherein, after being close to the sector of central control unit
To sector, the sector far from central control unit is forward sector, the forward sector of same connection base-station node, backward sector with
It is different that mobile terminal 4 connects frequency point used（If what mobile terminal 4 connected is the forward sector for connecting base-station node, move
The frequency point that terminal 4 uses is the frequency point of forward sector；If what mobile terminal 4 connected is the backward sector for connecting base-station node,
Mobile terminal 4 uses the frequency point of backward sector.）.Mobile terminal 4 is after cordless communication network is entered, and mobile terminal 4 is with connecting
Connect the forward sector of base-station node or backward sector connection communication.Usually, connection base-station node has two neighbor nodes, away from
The neighbor node near from central control unit to be preceding to neighbor base stations node, after the neighbor node remote apart from central control unit is
To neighbor base stations node, connecting neighbor base station node refers to neighbouring connection base-station node, and can be by preceding to neighbor base stations node
Or the node that backward neighbor base stations node communicates with connecting base-station node, connect neighbor base station node with connecting base-station node
Between have it is preceding to neighbor base stations node or backward neighbor base stations node.Central control unit is to inhibit to be used in cordless communication network
The control unit of overall situation control is known described in those skilled in the art, and details are not described herein again.Connection base-station node refers in nothing
With the node of mobile terminal connection communication in line communication network, base-station node, forward direction neighbor base stations node, backward neighbours' base are connected
Tiny node and connect neighbor base station node concrete structure and setting using the common setting of the art, specially
Known to those skilled in the art, details are not described herein again.
Mobile terminal 4 with connect base-station node connection after, mobile terminal 4 can use with connect base-station node connection frequency
The signal strength that point corresponds to connection base-station node sector coverage area is measured in real time, is corresponded to record connection base-station node
The change in signal strength of sector under normal circumstances, when mobile terminal 4 is away from connection base-station node, is connect with mobile terminal 4
Signal strength is gradually by dying down by force.It, can be according to shifting after connection base-station node measures the distance change of mobile terminal
The forward sector of dynamic terminal access connection base-station node, the information of backward sector judge the moving direction of mobile terminal, connect
Base-station node judges the detailed process of the moving direction of mobile terminal 4 for known to those skilled in the art, details are not described herein again.
After the moving direction for determining mobile terminal 4, the sector that switching condition is met on 4 moving direction of mobile terminal is equal
Can switch connection by mobile terminal 4, the sector for meeting switching include in connection base-station node not connecting with mobile terminal 4 and
Sector in sector, neighbor base stations node on 4 moving direction of mobile terminal connects sector in neighbor base station node.
When it is implemented, the moving direction due to mobile terminal is different, neighbor base stations node is for before to neighbours after neighbor base stations node
One in base-station node, after the moving direction of mobile terminal 4 determines, neighbor base stations node can by before corresponding be determined as to neighbour
Base-station node or backward neighbor base stations node are occupied, after neighbor base stations node determines, connecting neighbor base station node can be by therewith really
It is fixed.Mobile terminal 4 can only be attached with one met in switching condition sector, specific connection selection, can be as needed
It carries out selection and determines that specific choice situation will not enumerate.
It connects the neighbours that base-station node is included to the connection communication information that mobile terminal 4 transmits on moving direction and connects base station
Connect the connection communication information and in the direction of movement of neighbor base station node between in the connection communication information of node, moving direction
Connection base-station node is not connected with the connection communication information of sector with mobile terminal 4.
The connection communication information that neighbours on moving direction connect base-station node is led to be preceding to the connection of neighbor base stations node
The connection communication information of letter information or backward neighbor base stations node；The connection communication information includes the terminal device connected
Information and the maximum terminal quantity information that can be accommodated.
In the embodiment of the present invention, connecting the sector not connect in base-station node with mobile terminal 4 may not be in mobile terminal 4
Moving direction on, specific connection communication information needs just can determine that after the moving direction of mobile terminal 4 determines.
For mobile terminal 4 after the target BS node for determining switching connection, mobile terminal 4 first stores data to be sent
Stream, after switching is connected to target BS node, then by store data flow to be sent be sent to switching connection target BS
Node.
In the embodiment of the present invention, target BS node can be linker tiny node, neighbor base stations node or connect neighbouring
One in base-station node, mobile terminal 4 first stores the data flow that should be sent to connection base-station node, completes switching connection
Afterwards, then by the data flow of storage target BS node is sent to, to realize seamless switching of the mobile terminal 4 between base-station node.
Further, mobile terminal 4 moves and triggers the condition of connection switching including connecting base-station node connection sector
Signal strength is less than that the connection handoff threshold value of mobile terminal, the signal strength of neighbours' connection base-station node is more than on moving direction
Neighbours connect the signal strength of base-station node more than switching connection threshold and movement side on switching connection threshold, moving direction
The signal strength that upward neighbours connect base-station node is more than the signal strength of connection base-station node connection sector or connection base station section
The signal strength of point connection sector connects the signal strength of neighbor base station node between being less than on connection handoff threshold value and moving direction
More than connection handoff threshold value.The energy access base station link information includes the ID values of target BS and connection frequency point.
In the embodiment of the present invention, handoff procedure can be triggered when any of the above-described condition meets.Mobile terminal 4
Switching connection threshold can be obtained according to statistical measurement, in addition, switching connection threshold also with the type of mobile terminal 4 and
Requirement of the mobile terminal 4 to data connection is related, switches being specifically configured to known to those skilled in the art for connection threshold,
Details are not described herein again.
Find that the signal strength of the connection sector of connection base-station node is less than switching connection threshold when mobile terminal 4,
Trigger handoff procedure, at this time may mobile terminal 4 does not find suitably switch connection sector, mobile terminal 4 to connect base station
Node sends handover request, can switch the sector of connection by connection base-station node notice mobile terminal 4.
Mobile terminal 4 measures when finding nearby to have the signal strength be more than switching connection threshold, and mobile terminal 4 is to linker
Tiny node sends request, while the information that mobile terminal 4 is measured issues connection base-station node, is equally determined by connection base-station node
Determine the sector to be switched of mobile terminal 4.
After meeting switching condition, mobile terminal 4 initiates handover request to connection base-station node, and connection base-station node receives
After request, with reference to the information of surrounding sector learnt, the ID values and frequency point information of the target BS that mobile terminal 4 can be accessed
Issue mobile terminal 4.Connection base-station node issues being moved with the ID values possibility more than one of access base station for mobile terminal 4
After terminal 4 receives the echo message of connection base-station node, respectively with the frequency point specified, the ID values specified and corresponding base-station node
Sector communication.After communicating with each base-station node for connecting base-station node transmission, mobile terminal 4 can select communicate
Any node switch over access, can also select communication channel quality it is best point switching access.
Usually, mobile terminal 4 can be linked into target BS node, without performing the process of scanning（Scanning is a ratio
Relatively time consuming process）, greatly reduce time of switching.In the case of exception, if mobile terminal 4 is according to connection base-station node
Instruction, carry out communication failure with the frequency point and ID values and target BS node specified, at this time can driver sweep flow, scan it
Whether suitable target BS node is had on its frequency point.In the embodiment of the present invention, when the connection base station section being connect with mobile terminal 4
When the sector of target BS node behind the sector of point and switching uses same frequency point, belong to and switch with frequency；When mobile terminal 4 connects
When the sector of target BS node behind the sector of the connection base-station node connect and switching uses different frequency points, belong to alien frequencies and cut
It changes.
With the switching being switched to frequently in chain-shaped network between the different base station node under same frequency point；Alien frequencies is switched to same
The switching between switching or different frequent points different base station node between the forward and backward sector of base-station node, this is switched to same node
The switching between different operating frequency point under equipment or the switching between the different base station node under different frequent points.
As depicted in figs. 1 and 2, it is specifically discussed, but be not limited to two kinds of situations of the switching of same frequency and alien frequencies switching
This.The signal strength that sector is connect with mobile terminal 4 has to be larger than certain threshold value and could efficiently communicate, this door
Limit value can be obtained previously according to measuring.What mobile terminal 4 accessed when most starting is first base station node 1（The first base station section
Point 1 is connection base-station node）, in mobile journey, mobile terminal 4 can keep the communication with first base station node 1, simultaneously meeting
The signal strength of capped cell is measured with the frequency point that first base station node 1 uses, and is stored in a signal relation table.The
One base-station node 1 is analyzed before and after being accessed according to mobile terminal 4 to the variation of sector auxiliary information and distance measurement result, is moved
The moving direction of terminal 4.
It is to switch with frequency shown in Fig. 1, sets before and after being accessed according to 1 ranging of first base station node and mobile terminal 4 to fan
It is to carry out movement from left to right that area's information, which obtains 4 direction of mobile terminal, first base station node 1 can with its forward and backward neighbour into
Row communication, the relevant parameter information occupied before obtaining to neighbor base stations node, backward neighbor base stations node, wherein, the second base station section
Forward direction neighbor base stations node or backward neighbor base stations node of the point 2 for first base station node 1, third base-station node 3 are the first base
Connect neighbor base station node between tiny node 1, third base-station node 3 can be carried out by the second base-station node 2 with first base station node 1
Communication.The end message that the relevant parameter that first base station node 1 obtains includes the second base-station node 2, third base-station node 3 accommodates
Number and judge whether the second base-station node 2, third base-station node 3 can also accommodate extra terminal device, and preserve second
The relevant information of base-station node 2 and third base-station node 3.
When mobile terminal 4 is close to the second base-station node, the signal that can measure first base station node 1 gradually subtracts
Weak, the signal of the second base-station node 2 gradually enhances.With continuing to move to for mobile terminal 2, at some moment, first is measured
When the signal strength of base-station node 1 is less than switching connection threshold（The condition of triggering switching is not limited only to this, only specifies at this time
Trigger a kind of situation of switching）.Mobile terminal 4 sends out handover request to first base station node 1 at this time, and first base station node 1 returns
It answers the request of mobile terminal 4 and the second base-station node 2,3 corresponding frequency point of third base-station node and ID values is sent to movement by handle
Terminal 4.After mobile terminal 4 receives the second base-station node 2,3 corresponding frequency point of third base-station node and ID values, the second base station is used
The frequency point of node 2 communicates with the second base-station node 2, is then switched fast after communicating successfully.
The business being locally currently running is stored first during switching, the loss of data for preventing switching from may bring, completed fast
Fast seamless switching.After switching, the frequency point of mobile terminal 4 does not change, this situation belongs to the switching under same frequency point.
May be due to the interference of environment, when mobile terminal 4 will switch in reality, the second base-station node 2 cannot be with
Mobile terminal 4 is normally communicated, and third base-station node 3 can communicate with mobile terminal 4, then mobile terminal 4 can be by
First base station node 1 is switched to third base-station node 3, and such case belongs to alien frequencies situation described below.
It is alien frequencies switching shown in Fig. 2, wherein, mobile terminal 4 is linked into the second base-station node 2 by the switching of same frequency, starts
When, mobile terminal 4 is in the backward sector of the second base-station node 2.Second base-station node 2 is assisted with third base-station node 3
Quotient communicates, and judges that third base-station node 3 can also accommodate a certain amount of terminal device, and the result of negotiation is saved.At certain
One moment when the signal strength of the scanning of mobile terminal 4 to access point is less than switching connection threshold, triggered the process of switching（It touches
The condition of hair switching is not limited only to this, only illustrates a kind of situation of triggering switching herein）.Mobile terminal 4 is saved to the second base station
Point 2 sends out handover request, and the second base-station node 2 responds the request of mobile terminal 4 and ID, forward direction frequency point and third base itself
The frequency point and ID values of tiny node 3 are sent to mobile terminal 4.Mobile terminal 4 receive the ID of the second base-station node 2, forward direction frequency point with
And after the frequency point and ID of third base-station node 3, communicate respectively with these frequency points, if measuring the forward sector of the second base-station node 2
It can access, then can be switched under the forward direction frequency point of the second base-station node 2；If it measures and the forward direction of the second base-station node 2 frequency
Point communication failure, and third base-station node 3 can then be switched to third base-station node 3 with normal communication；If measure mobile terminal 4
It can communicate with the second base-station node 2, third base-station node 3, then preferentially choose the good node of communication channel quality and switch over.
The forward sector of the second base-station node 2 or third base-station node 3 are to switch to, the frequency point of mobile terminal is all changed
Become, belong to alien frequencies switching.
Several situations described in Fig. 1, Fig. 2 are all the switchings belonged under normal circumstances, you can so that mobile terminal 4 finds switching
Node.In an exceptional case, by ambient enviroment serious interference, with the frequency point and node ID specified and target BS node into
After row communication all fails（In order to avoid frequency point interference, it is specified that base station can only at most obtain before to two or backward two neighbours section
The information of point）, the flow of driver sweep is wanted at this time.It rescans on other frequency points and whether there is suitable access point.
Claims (1)
1. the node fast handoff mechanisms under a kind of wireless multi-hop chain topological network, it is characterized in that：In mobile terminal with connecting
In the cordless communication network of base-station node wireless connection, connection base-station node can be with forward direction neighbours' base of the connection base-station node
Tiny node, backward neighbor base stations node and connect the communication of neighbor base station node, with obtain the forward direction neighbor base stations node, after
To neighbor base stations node and connect the corresponding connection communication information of neighbor base station node；
Mobile terminal is mobile and triggering is connected when switching, and connection base-station node determines the moving direction of the mobile terminal, and will
The base station connection information that can be accessed on mobile terminal moving direction is transmitted to mobile terminal, so that mobile terminal energy basis connects
The base station connection information that can be accessed of receipts switches and is connected to required target BS node；
For mobile terminal after the target BS node for determining switching connection, mobile terminal first stores data flow to be sent, is cutting
Change after being connected to target BS node, then by store data flow to be sent be sent to switching connection target BS node；
It connects the neighbours that base-station node is included to the connection communication information that mobile terminal transmits on moving direction and connects base-station node
Connection communication information, on moving direction between connect the connection communication information of neighbor base station node and connect in the direction of movement
Base-station node is not connected with the connection communication information of sector with mobile terminal；
The connection communication information that neighbours on moving direction connect base-station node is believed for the preceding connection communication to neighbor base stations node
The connection communication information of breath or backward neighbor base stations node；The connection communication information includes the terminal device information connected
And the maximum terminal quantity information that can be accommodated；
The energy access base station link information includes the ID values of target BS and connection frequency point；
Mobile terminal is mobile and triggering connects the condition switched and includes the signal strength of connection base-station node connection sector less than shifting
Neighbours connect the signal strength of base-station node and are more than switching connection thresholding in the connection handoff threshold value of dynamic terminal, moving direction
Neighbours connect the signal strength of base-station node more than neighbours' connection on switching connection threshold and moving direction in value, moving direction
The signal strength of base-station node is more than the signal strength of connection base-station node connection sector or connection base-station node connects sector
Signal strength connects neighbor base station node signal strength between being less than on connection handoff threshold value and moving direction is more than connection switching
Threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132098.0A CN104735731B (en) | 2015-03-24 | 2015-03-24 | Node fast handoff mechanisms under wireless multi-hop chain topological network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132098.0A CN104735731B (en) | 2015-03-24 | 2015-03-24 | Node fast handoff mechanisms under wireless multi-hop chain topological network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104735731A CN104735731A (en) | 2015-06-24 |
| CN104735731B true CN104735731B (en) | 2018-07-10 |
Family
ID=53459065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510132098.0A Active CN104735731B (en) | 2015-03-24 | 2015-03-24 | Node fast handoff mechanisms under wireless multi-hop chain topological network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104735731B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636132A (en) * | 2015-12-30 | 2016-06-01 | 深圳市金立通信设备有限公司 | Configuration method and system of wireless access point, base station, and user terminal |
| CN105682163A (en) * | 2016-01-12 | 2016-06-15 | 宇龙计算机通信科技(深圳)有限公司 | Base station switching control method, base station switching control device and terminal |
| CN105873075B (en) * | 2016-04-08 | 2019-05-07 | 江苏中科羿链通信技术有限公司 | The frequency point selecting method of wireless chain topological network node |
| CN108235384B (en) * | 2016-12-12 | 2020-10-16 | 华为技术有限公司 | Wireless network switching method and device |
| CN109429340B (en) * | 2017-08-25 | 2023-05-05 | 阿里巴巴集团控股有限公司 | Wireless communication method and device |
| CN111083679A (en) * | 2018-10-22 | 2020-04-28 | 瀚谊世界科技股份有限公司 | Chain wireless communication system and signal processing method |
| CN115314972A (en) * | 2021-05-07 | 2022-11-08 | 阿里巴巴新加坡控股有限公司 | Network communication method and base station |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557625A (en) * | 2009-03-09 | 2009-10-14 | 南京大学 | Fast switching method based on movement detection in wireless network |
| CN101605376A (en) * | 2008-06-12 | 2009-12-16 | 上海寰创通信科技有限公司 | Seamless handover method under the scene of pilot frequency coverage |
| CN101651962A (en) * | 2009-09-21 | 2010-02-17 | 中兴通讯股份有限公司 | Method and device for switching mobile station |
| CN102045797A (en) * | 2010-12-14 | 2011-05-04 | 迈普通信技术股份有限公司 | Method and system for accelerating cell switching in high-speed vehicle moving environment |
| EP2659698A1 (en) * | 2010-12-28 | 2013-11-06 | Nec Corporation | Handover property estimation system, handover parameter optimization system, methods, and programs |
-
2015
- 2015-03-24 CN CN201510132098.0A patent/CN104735731B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101605376A (en) * | 2008-06-12 | 2009-12-16 | 上海寰创通信科技有限公司 | Seamless handover method under the scene of pilot frequency coverage |
| CN101557625A (en) * | 2009-03-09 | 2009-10-14 | 南京大学 | Fast switching method based on movement detection in wireless network |
| CN101651962A (en) * | 2009-09-21 | 2010-02-17 | 中兴通讯股份有限公司 | Method and device for switching mobile station |
| CN102045797A (en) * | 2010-12-14 | 2011-05-04 | 迈普通信技术股份有限公司 | Method and system for accelerating cell switching in high-speed vehicle moving environment |
| EP2659698A1 (en) * | 2010-12-28 | 2013-11-06 | Nec Corporation | Handover property estimation system, handover parameter optimization system, methods, and programs |
Non-Patent Citations (1)
| Title |
|---|
| Radio Resource Control (RRC)Protocol specification;3GPP;《3GPP TS 36.331 V10.0.0》;20101219;第5.5.4.2-5.5.4.8节 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104735731A (en) | 2015-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104735731B (en) | Node fast handoff mechanisms under wireless multi-hop chain topological network | |
| US10327184B2 (en) | Handoffs between access points in a Wi-Fi environment | |
| EP3547756B1 (en) | Wireless network switching method and apparatus | |
| Navda et al. | Design and evaluation of imesh: an infrastructure-mode wireless mesh network | |
| US11363515B2 (en) | WLAN user quality of experience control in a multi-access point environment | |
| CN102474762B (en) | For the method and apparatus of the network transitions that infrastructure is assisted | |
| EP3226615B1 (en) | Ap handover method in industrial mobile network based on double wireless network interface cards | |
| KR100759438B1 (en) | High speed intra-domain mobility management method using dual interfaces in wireless lan/man system | |
| CN108370516B (en) | Method for cell measurement report and user equipment | |
| CN101247621B (en) | TD-SCDMA signal estimation method for measuring 3a event and 3a event detecting report method | |
| CN108601052A (en) | A kind of wireless network switching method | |
| CN109155955A (en) | For controlling mobility method and device in wireless network | |
| CN105430695A (en) | AP switching method | |
| CN103188744B (en) | The method of radio communication, subscriber equipment and system | |
| JP2019062330A (en) | Mobile communication device, channel scanning method and program | |
| JP4046705B2 (en) | Mobile communication support apparatus, mobile communication terminal, and mobile communication system | |
| KR20090066571A (en) | Location estimation apparatus and method using location fingerprint, and handoff decision apparatus and method using its | |
| CN101064916B (en) | System for realizing mobile equipment seamless switch in different networks | |
| Syuhada et al. | Performance evaluation of vertical handoff in fourth generation (4G) networks model | |
| CN108135017A (en) | A kind of unmanned plane roaming communication method and device | |
| CN106535267B (en) | MTC terminal cell switching control method and device | |
| Backhaus et al. | Improving Network-Assisted Roaming for Controller-Less Wi-Fi | |
| CN108632935A (en) | A kind of WIFI network switching method | |
| CN109451548B (en) | Method for hot standby communication among various networks based on gateway equipment | |
| Papapostolou et al. | Deploying wireless sensor/actuator networks and rfid for handoff enhancement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230707 Address after: 214135 Building C, Weina Sensor Network International Innovation Park, No. 200, Linghu Avenue, the Taihu Lake International Science Park, Wuxi New District, Jiangsu Province Patentee after: JIANGSU CAS INTERNET-OF-THINGS TECHNOLOGY VENTURE CAPITAL CO.,LTD. Address before: 214135 Block C, International Innovation Park of China Sensor Network, 200 Linghu Avenue, Wuxi New District, Jiangsu Province Patentee before: JIANGSU R & D CENTER FOR INTERNET OF THINGS |