CN107295590A - The method that base station and LTE network switch to wlan network - Google Patents
The method that base station and LTE network switch to wlan network Download PDFInfo
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- CN107295590A CN107295590A CN201610200754.0A CN201610200754A CN107295590A CN 107295590 A CN107295590 A CN 107295590A CN 201610200754 A CN201610200754 A CN 201610200754A CN 107295590 A CN107295590 A CN 107295590A
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- wlan network
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims description 13
- 230000011664 signaling Effects 0.000 description 10
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The method that base station and LTE network switch to wlan network, methods described includes：Whether when LTE network is that user equipment sets up RAB, obtaining the RAB set up of mobility management entity transmission allows the information for switching to wlan network；When it is determined that the user equipment allows to switch to wlan network, prioritizing selection allows the downlink data for the RAB for switching to wlan network to be scheduled and transmit to the user equipment.Above-mentioned scheme, in UE from during LTE is switched to wlan network, it is possible to reduce the loss of downlink data, improves the reliability of data transfer.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of base station and LTE network are to wlan network
The method of switching.
Background technology
Long Term Evolution (Long Term Evolution, LTE) network and WLAN (Wireless LAN,
WLAN) network convergence (LTE-WLAN Aggregation, LWA), is user equipment (i.e. UE
Termination, abbreviation UE) in wireless heterogeneous networks connection status (RRC Connected) by base
Station is configured to while carried out data transmission using LTE and WLAN Radio Resource, now user equipment with
Base station in LTE keeps RRC connections, and the Non-Access Stratum signaling (NAS) of user equipment is responsible for by base station
(up Non-Access Stratum signaling is sent to core net by base station, and descending Non-Access Stratum signaling is by base for transmission
Station is sent to user equipment).
In LTE and WLAN convergences, downlink grouped data convergence protocol (the Packet Data each carried
Convergence Protocol, PDCP) packet by positioned at base station PDCP entities generation, pass through
LTE wireless spread-spectrum technology (Radio Link Control, RLC) layer, media intervention control (Medium
Access Control, MAC) layer and physical layer, or transmitted by WLAN to user equipment.
In the prior art, UE sets up one or more public data networks by LTE system access network
(Public Data Network, PDN) connect, UE find have accessible WLAN access networks when,
Some or all PDN connections having built up can be switched to wlan network.
Under normal circumstances, UE can select the wlan network that can be accessed according to network selection criterion,
And the PDN connections of some or all foundation are switched to wlan network.In 3GPP versions 13
(Release13) in, the signaling that base station triggers UE is switched to wlan network is introduced, base station can be with
Measured by obtaining WLAN load information with the back haul link of wlan network, and by UE
The information such as wlan network signal intensity judge whether that triggering UE is switched to WLAN.
But, in UE from during LTE is switched to WLAN, it may result in losing for downlink data
Lose, influence Consumer's Experience.
The content of the invention
The technical problem that the embodiment of the present invention is solved be in UE from during LTE is switched to WLAN,
The loss of downlink data how is reduced, the reliability of data transfer is improved.
To solve the above problems, switching the embodiments of the invention provide a kind of LTE network to wlan network
Method, methods described includes：When LTE network is that user equipment sets up RAB, obtain
Whether the RAB set up that mobility management entity is sent allows to switch to wlan network
Information；When it is determined that the user equipment allows to switch to wlan network, prioritizing selection allows to switch to
The downlink data of the RAB of wlan network is scheduled, and is transmitted to the user equipment.
Alternatively, it is described to determine whether the user equipment allows to switch to wlan network, including：
The base station determines the use by the measurement report of the wlan network of the user equipment to report
Whether family equipment allows to switch to wlan network.
Alternatively, measurement report and institute of the base station by the wlan network of the user equipment to report
The load condition of wlan network is stated, determines whether the user equipment allows to switch to wlan network.
Alternatively, methods described also includes：
When it is determined that the RAB that the user equipment is set up does not allow to switch to wlan network,
Configured information is sent to the user equipment, to cause the user equipment to stop to accessible WLAN
Network is measured.
Alternatively, whether the RAB set up for obtaining mobility management entity transmission is permitted
Permitted to switch to the information of wlan network, including：
Solicited message is set up by mobility management entity transmission initial context or wireless access is held
Load sets up solicited message, obtains whether set up RAB allows to switch to wlan network
Information.
Alternatively, methods described also includes：Held when being defined as the wireless access that the user equipment set up
The information that can not switch to wlan network is carried to user equipment transmission configured information, to indicate
User equipment is stated to stop measuring the wlan network detected.
The embodiment of the present invention additionally provides a kind of base station, and the base station includes：Acquiring unit, suitable for working as LTE
Network is user equipment when setting up RAB, and obtain that mobility management entity sends is set up
Whether RAB allows the information for switching to wlan network；Scheduling unit, suitable for when determination institute
When stating user equipment and allowing to switch to wlan network, prioritizing selection allows to switch to wlan network
The downlink data of RAB is scheduled, and is transmitted to the user equipment.
Alternatively, the base station also includes：Switching judging unit, suitable for passing through the user equipment to report
Wlan network measurement report, determine whether the user equipment allows to switch to wlan network.
Alternatively, the switching judging unit, suitable for the wlan network by the user equipment to report
Measurement report and the wlan network load condition, determine the user equipment whether allow switching
To wlan network.
Alternatively, the base station also includes：
First transmitting element, suitable for can not be cut when the RAB for determining the user equipment foundation
When shifting to wlan network, configured information is sent to the user equipment, to cause the user equipment to stop
Only accessible wlan network is measured.
Alternatively, the acquiring unit, suitable for sending initial context by the mobility management entity
Set up solicited message or RAB sets up solicited message, obtain set up RAB
Whether the information that switches to wlan network is allowed.
Compared with prior art, technical scheme has the following advantages that：
Above-mentioned scheme, when base station determines that UE allows to switch from LTE network to wlan network, preferentially
Scheduling allows the downlink data for the RAB for switching to wlan network, and transmits to user equipment,
User equipment can be reduced from LTE network to the loss of wlan network switching evidence, data are improved and pass
Defeated reliability.
Further, when base station determines that LTE network is set up in RAB for the user equipment,
When all RABs do not allow to switch to wlan network, forbid user equipment to can access
Wlan network measure, to reduce the interaction of signaling and UE power consumption, so as to
Save resource.
Brief description of the drawings
Fig. 1 is the flow for the method that a kind of LTE network in the embodiment of the present invention switches to wlan network
Figure；
Fig. 2 is the structural representation of the base station in the embodiment of the present invention.
Embodiment
In the prior art, UE by LTE system access public data network (Public Data Network,
When PDN) setting up one or more PDN connections, if detecting accessible WLAN access networks
When, some or all PDN connections having built up can be switched to wlan network.
Under normal circumstances, UE can select the wlan network that can be accessed according to network selection criterion,
And the PDN connections of some or all foundation are switched to wlan network.In 3GPP Release 13,
Introduce the signaling that base station triggers UE is switched to wlan network.Wherein, base station can be UE configurations
The measurement of correlation of wlan network, so that UE is measured to neighbouring wlan network, and will meet
The wlan network of report condition reports to base station.The WLAN measurement reports that base station is reported by UE with
And the load information for the wlan network that may be obtained by the back haul link (backhaul) with WLAN
And the link-state information between WLAN access networks and core network, it is made whether to allow UE to switch
Decision.
But, because being not aware that in the PDN connections that UE has been set up which can be switched to wlan network,
Base station is sold after UE switches to the decision of wlan network making, and base station may preserve part PDN companies
The downlink data connect is not in time for the data of transmission, after UE is switched to wlan network, it will
Cause the loss of these data.
To solve the above-mentioned problems in the prior art, the technical scheme base station that the embodiment of the present invention is used
When determining that UE allows to switch from LTE network to wlan network, prioritizing selection allows to switch to WLAN
The downlink data of the RAB of network is scheduled, and is transmitted to user equipment, it is possible to reduce used
The loss of data when family equipment switches from from LTE network to wlan network, improves the reliable of data transfer
Property.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings
The specific embodiment of the present invention is described in detail.
Fig. 1 shows a kind of method that LTE network and wlan network in the embodiment of the present invention switch
Flow chart.As shown in figure 1, in specific implementation, the method for LTE network and wlan network switching can
To be realized by following flow：
Step S101：When LTE network is that user equipment sets up RAB, mobility pipe is obtained
Whether the RAB set up that reason entity is sent allows the information for switching to wlan network.
In specific implementation, UE is after access LTE network, and LTE network can be according to UE business
Need to configure one or more PDN connection for UE, each PDN connections can include one or many again
The RAB (Evolved Radio Access Bearer, E-RAB) of individual different evolution.LTE
Network when setting up PDN connections for UE, mobility management entity (Mobility Management Entity,
MME) UE can be signaled by Non-Access Stratum (Non-access stratum, NAS), is set up
Whether PDN connections can be switched to wlan network.But, the base station of UE accesses can not be known as
Whether the E-RAB in the PDN connections that UE is set up allows to switch to wlan network.
Therefore, in one embodiment of the invention, when MME can be that UE sets up E-RAB in LTE network,
The information the signals base whether E-RAB set up is allowed to switch to wlan network, to cause base
Standing can be known as whether which E-RAB in the PDN connections of UE foundation allows to switch to WLAN nets
Network.
In specific implementation, whether MME is allowed to switch to by the UE RABs set up
The information of wlan network, can be sent to base station by S1 interface signalings.For example, MME can lead to
Cross initial contexts of the UE when accessing LTE network and set up demand signalling, or in UE in access LTE
When setting up E-RAB after network, by E-RAB set up demand signalling by the E-RAB set up whether
The information for switching to wlan network is allowed to be sent to base station.
Step S102：When detecting accessible wlan network and determine that the user equipment allows to switch to
During wlan network, prioritizing selection allows the downlink data for the RAB for switching to wlan network
It is scheduled and transmits to the user equipment.
In specific implementation, as UE with base station in connection status, base station can pass through positional information (UE
Position and WLAN deployed position information) when judging UE close to accessible wlan network, base
The configuration UE that stands is measured to neighbouring wlan network, and UE enters to detected wlan network
Go and measure, and the information of the wlan network of report condition will be met and measure report added to wlan network
In announcement and report to base station.Base station can based on the wlan network measurement report received, or, also
Can be by the load information of the wlan network acquired in back haul link, it is determined whether can be by
UE, which is switched in wlan network, (to be necessary to ensure that UE is switched to after WLAN to can continue to carry out to work as
Preceding business).
In 3GPP Rlease13, base station determines that UE allows to switch to wlan network and (is necessary to ensure that
UE is switched to can continue to after WLAN carry out current business) when, UE is in the lte networks
The E-RAB for switching to wlan network is allowed to switch to wlan network in PDN connections, and
Downlink data is transmitted to UE by wlan network.
But, the E-RAB's for allowing to switch to wlan network in the PDN connections that UE is set up is descending
Some data buffer storage of data has not enough time to be transferred to UE in a base station.Therefore, avoided to try one's best
The loss of the part downlink data, base station can be when it is determined that UE allows to switch to wlan network, just
Allow the E-RAB lower line number for switching to wlan network in the PDN connections that UE foundation can be chosen
According to UE is first transferred to, to avoid, when UE switches to wlan network, causing what is cached in base station
The loss of this part downlink data.
And the E-RAB for not allowing to switch to wlan network, due to its will continue through base station to
UE sends downlink data, therefore, the E-RAB for not allowing to switch to wlan network cached in base station
Downlink data will not lose.It therefore, it can not allow to cut in the temporary transient PDN connections for setting up UE
The priority reduction of the E-RAB of wlan network downlink data dispatching is shifted to, will allow to switch to
The priority of the E-RAB of wlan network downlink data dispatching is improved, to allow to switch to
The E-RAB of wlan network downlink data prioritised transmission is finished.It will allow to switch to WLAN in UE
The E-RAB of network is switched to after wlan network, and base station can recover the PDN connections of UE foundation
In do not allow the dispatching priority that switches to the E-RAB of wlan network.
It is to be herein pointed out being potentially included in the PDN connections set up for UE more than one
E-RAB, in same PDN connections, it is understood that there may be some E-RAB allow to switch to WLAN nets
Network, other E-RAB do not allow the situation for switching to wlan network then.Therefore, it is specific real at this
Shi Zhong, base station is not to be connected as granularity with PDN to adjust the transmission of downlink data, but with E-RAB
The scheduling of the transmission of downlink data is carried out for granularity, compared with being connected as granularity with PDN, one can be entered
Step reduces the loss of data.
In specific implementation, further extension can also be made to above-described embodiment as needed.In this hair
In a bright embodiment, base station is in all PDN connections set up by UE for receiving MME transmissions
All E-RAB when not allowing to switch to WLAN, in order to avoid UE is to the WLAN that detects
Network is measured, consumed with saving signaling and UE power attenuation, base station by user equipment from LTE
Network can also comprise the following steps during switching to wlan network：
Step S103：When it is determined that the RAB that the user equipment is set up does not allow to switch to
During wlan network, configured information is sent to the user equipment, to cause the user equipment stopping pair
Wlan network is measured.
Below by the corresponding device of switching method from the LTE network in above-described embodiment to wlan network
It is further described in detail.
Fig. 2 shows a kind of structural representation of base station in the embodiment of the present invention.As shown in Fig. 2
In specific implementation, the base station 200 in the embodiment of the present invention can include acquiring unit 201 and scheduling unit
202, wherein：
Acquiring unit 201, suitable for when LTE network is that user equipment sets up RAB, obtaining
Whether the RAB set up that mobility management entity is sent allows to switch to wlan network
Information.
In specific implementation, the acquiring unit 201, suitable for being sent just by the mobility management entity
Beginning context sets up solicited message or RAB sets up solicited message, and it is wireless that acquisition is set up
Whether access bearer can switch to the information of wlan network.
Scheduling unit 202, it is excellent suitable for when it is determined that the user equipment allows to switch to wlan network
First selection allow the downlink data for the RAB for switching to wlan network be scheduled and transmit to
The user equipment.
In specific implementation, the base station 200 can also include switching judging unit 203, wherein：
Switching judging unit 203, by the measurement report of the wlan network of the user equipment to report,
Determine whether the user equipment is allowed hand over to wlan network.
In an alternative embodiment of the invention, the switching judging unit 203 is suitable to pass through the user equipment
The load condition of the measurement report of the wlan network reported and the wlan network, determines the use
Whether family equipment allows to switch to wlan network.
In specific implementation, the base station 200 can also include the first transmitting element 204, wherein：
First transmitting element 204, suitable for can not when the RAB for determining the user equipment foundation
When switching to wlan network, configured information is sent to the user equipment, to cause the user equipment
Stopping is measured to wlan network.
Using above-mentioned scheme, when base station determines that UE can switch from LTE network to wlan network,
Prioritizing selection allows hand over the downlink data transmission to the RAB of wlan network to user equipment,
User equipment can be reduced from LTE to the loss of WLAN switching evidences, the reliable of data transfer is improved
Property.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment
Rapid to can be by program to instruct the hardware of correlation to complete, the program can be stored in computer-readable
In storage medium, storage medium can include：ROM, RAM, disk or CD etc..
The method and system to the embodiment of the present invention have been described in detail above, and the present invention is not limited thereto.
Any those skilled in the art, without departing from the spirit and scope of the present invention, can make it is various change with
Change, therefore protection scope of the present invention should be defined by claim limited range.
Claims (10)
1. a kind of method that LTE network switches to wlan network, it is characterised in that including：
When LTE network is that user equipment sets up RAB, obtain what mobility management entity was sent
Whether the RAB set up allows the information for switching to wlan network；
When it is determined that the user equipment allows to switch to wlan network, prioritizing selection allows to switch to
The downlink data of the RAB of wlan network is scheduled and transmitted to the user equipment.
2. the method that LTE network according to claim 1 switches to wlan network, it is characterised in that
It is described to determine that the user equipment allows to switch to wlan network, including：
Base station determines that the user sets by the measurement report of the wlan network of the user equipment to report
It is standby whether to allow to switch to wlan network.
3. the method that LTE network according to claim 2 switches to wlan network, it is characterised in that
It is described to determine whether the user equipment allows to switch to wlan network, including：The base station leads to
Cross the measurement report of the wlan network of the user equipment to report and the load of the wlan network
State, determines whether the user equipment allows to switch to wlan network.
4. the method that LTE network according to claim 1 switches to wlan network, it is characterised in that
Also include：
When it is determined that the RAB that the user equipment is set up does not allow to wlan network, to
The user equipment sends configured information, to cause the user equipment to stop to accessible WLAN
Network is measured.
5. the method that LTE network according to claim 1 switches to wlan network, it is characterised in that
Whether the RAB set up for obtaining mobility management entity transmission allows to switch to
The information of wlan network, including：
Solicited message is set up by mobility management entity transmission initial context or wireless access is held
Load sets up solicited message, obtains whether set up RAB allows to switch to WLAN nets
The information of network.
6. a kind of base station, it is characterised in that including：
Acquiring unit, suitable for when LTE network is that user equipment sets up RAB, obtaining mobility
Whether the RAB set up that management entity is sent allows the letter for switching to wlan network
Breath；
Scheduling unit, it is preferential to select suitable for when it is determined that the user equipment allows to switch to wlan network
Selecting allows the downlink data for the RAB for switching to wlan network to be scheduled, and transmits
To the user equipment.
7. base station according to claim 6, it is characterised in that also include：Switching judging unit, is suitable to
Pass through the measurement report of the wlan network of the user equipment to report and bearing for the wlan network
Load state, determines whether the user equipment allows to switch to wlan network.
8. base station according to claim 7, it is characterised in that the switching judging unit, is further adapted for leading to
Cross the measurement report of the wlan network of the user equipment to report and the load of the wlan network
State, determines whether the user equipment allows to switch to wlan network.
9. base station according to claim 6, it is characterised in that also include：
First transmitting element, suitable for can not switch when the RAB for determining the user equipment foundation
To configured information is sent to the user equipment during wlan network, to cause the user equipment to stop
Only accessible wlan network is measured.
10. base station according to claim 6, it is characterised in that the acquiring unit, suitable for by described
Transmission initial context sets up solicited message or RAB sets up solicited message, and acquisition is built
Whether vertical RAB allows the information for switching to wlan network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200754.0A CN107295590B (en) | 2016-03-31 | 2016-03-31 | Base station and method for switching LTE network to WLAN network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200754.0A CN107295590B (en) | 2016-03-31 | 2016-03-31 | Base station and method for switching LTE network to WLAN network |
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| Publication Number | Publication Date |
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| CN107295590A true CN107295590A (en) | 2017-10-24 |
| CN107295590B CN107295590B (en) | 2020-04-07 |
Family
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| CN201610200754.0A Active CN107295590B (en) | 2016-03-31 | 2016-03-31 | Base station and method for switching LTE network to WLAN network |
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| CN107911250A (en) * | 2017-11-28 | 2018-04-13 | 新华三技术有限公司 | A kind of pile system and its method for preventing traffic loss |
| CN108174419A (en) * | 2018-01-30 | 2018-06-15 | 北京邮电大学 | A kind of efficient switching method of multi-standard wireless network based on software definition |
| CN110944287A (en) * | 2019-12-08 | 2020-03-31 | 北京凌壹世纪科技有限公司 | Mobile terminal-based public safety command information transmission method and public safety mobile command terminal |
| CN111262930A (en) * | 2020-01-15 | 2020-06-09 | 德阳市人民医院 | Internet of things-based cerebral infarction patient recovery training guidance system |
| CN111418228A (en) * | 2017-12-26 | 2020-07-14 | At&T知识产权一部有限合伙公司 | Wireless fidelity access control for 5G or other next generation networks |
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| Publication number | Publication date |
|---|---|
| CN107295590B (en) | 2020-04-07 |
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