CN102821375B - Signaling processing method and system used for switching relay node - Google Patents
Signaling processing method and system used for switching relay node Download PDFInfo
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- CN102821375B CN102821375B CN201110155417.1A CN201110155417A CN102821375B CN 102821375 B CN102821375 B CN 102821375B CN 201110155417 A CN201110155417 A CN 201110155417A CN 102821375 B CN102821375 B CN 102821375B
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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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
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Abstract
The invention discloses a signaling processing method and a system used for switching a relay node. The method includes a relay node belonging source base station sends user control signaling identifier mapping information managed by the relay node to a target base station in which the relay node is needed to be switched; and after the relay node is switched from the source base station to the target base station, the source base station and/or the target base station process or processes the user control signaling according to the mapping information. According to the method and the system, the control signaling identifier mapping information is informed to the target base station by the source base station, a user related S1 signaling process is guaranteed to be transmitted and performed smoothly by simple identifier mapping or updating, and effects to the control signaling by switching the relay node are reduced.
Description
Technical field
The present invention relates to wireless communication technology field, specifically, it is related at a kind of signaling for via node switching
Reason method and system.
Background technology
In order to meet the demand that growing big bandwidth high-speed mobile accesses, third generation partnership project (Third
Generation Partnership Projects, abbreviation 3GPP) release senior long term evolution (Long-Term Evolution
Advance, abbreviation LTE-Advanced) standard.LTE-Advanced is for Long Term Evolution (Long-Term Evolution, letter
Claim LTE) evolution remain the core of LTE, and employ a series of technology on this basis frequency domain, spatial domain expanded,
Improve the availability of frequency spectrum, increase the purposes such as power system capacity to reach.
Wireless relay (Wireless Relay) technology is one of technology in LTE-Advanced it is intended to Extended Cell
Dead angle area in coverage, minimizing communication, balanced load, the business of transfer hot zones and saving user equipment (User
Equipment, abbreviation UE) transmission power.As shown in figure 1, via node (Relay Node, abbreviation RN) is to its cell of access
UE the function similar with common eNB and service are provided, access one in the way of similar to common UE further through wave point
Serve its eNB, the eNB serving RN is referred to as Donor eNB, abbreviation DeNB.DeNB and mobile management entity (Mobility
Management Entity, abbreviation MME) connect.
And on the other hand, build on a large scale with high-speed railway and put into operation, the demand communicating ON TRAINS is continuous
Increase.Current high-speed railway operational speed has reached 350 kilometers/hour, by Doppler frequency shift, cell frequent switching, height
Ferrum compartment penetration loss is big to wait impact, and the covering of existing network base station is difficult to meet the communication quality demand of high ferro.Therefore industry
Propose to dispose via node in high ferro, make such as UE1 and UE2 of the user in high ferro train directly be led to the RN of geo-stationary
Letter, and RN can switch in high ferro moving process between different DeNB, thus avoiding big in high-iron carriage
Switch the communication quality it is ensured that between UE and RN while amount user, pass through in addition to strengthen the bone between mobile RN and DeNB
Involvement connects, and can preferably solve the problems referred to above of high ferro presence.But the introducing of mobile RN can be to existing LTE-Advanced
Middle RN relevant criterion produces large effect, the such as process to S1 signaling process for the DeNB.
In current system architecture, as shown in Fig. 2 RN sets up unique S1 with DeNB in chain of command being connected (by DeNB
It is considered as unique MME), the related S1AP signaling of all UE is all passed through this S1 connection and is sent to DeNB, and these S1 are applied association by DeNB
View (S1Application Protocol, abbreviation S1AP) signaling is connected with the chain of command S1 of MME by oneself after being processed
It is sent to the real MME destination of UE.DeNB the process of S1AP signaling is included change S1AP identifier (Identifier, referred to as
ID), transport Layer address and tunnel endpoint identifier (Tunnel Endpoint Identifier, abbreviation TEID) etc..S1AP
ID be the related S1 logic of UE connect distributed by eNB (including RN with DeNB) or MME when creating related for unique mark UE
S1 logic connects.For example the related S1 logic of UE is connected, eNB will be its distribution unique eNBUE in the range of eNB
S1AP ID, and MME will be its distribution unique MME UE S1AP ID in the range of MME, and related in this UE subsequently all
The information of this two ID is comprised in S1AP signaling.
Because DeNB generally connects multiple different MME, and the UE that RN is serviced is possible to be connected to different MME
On, the MME UE S1AP ID that these MME connect distribution for the related S1 logic of UE has arrived DeNB and has been possible to here repeat, thus
When DeNB receives the S1AP signaling that RN sends it is impossible to distinguish be forwarded to which MME after leading to.Similar, DeNB also has
Multiple different RN and UE may be serviced, these RN are the eNB UE S1AP ID that the related S1 logic of UE connects distribution simultaneously
Arrived DeNB here be also possible to repeat, meanwhile, RN distribution eNB UE S1AP ID be also possible to straight for it with DeNB
Connect the eNB UE S1AP ID repetition that the UE of service is distributed.Therefore in current system design, DeNB can change MME/RN
UE S1AP ID (S1AP ID2) information of distribution, is sent in the UE S1AP ID (S1AP ID1) of unique distribution in the range of DeNB
To RN/MME, and preserve the mapping table of S1AP ID1 and S1AP ID2 and corresponding UE information in DeNB.For receiving
The S1AP signaling from RN or MME, DeNB replaced modification accordingly to S1AP id information therein.
In view of the scene of mobile relay, as shown in figure 3, when RN is switched to target DeNB2 from source DeNB1, due to RN
UE1 and UE2 being serviced do not have participate in switching so that service UE1 and UE2 MME and S-GW do not perceive with UE it
Between path change.Therefore it is sent to the descending control signaling of UE1 and UE2 from MME/S-GW and packet still will first be routed to source
DeNB1, is then forwarded to target DeNB2 by source DeNB1, is finally forwarded to UE1 and UE2 by DeNB2 by RN, up accordingly
In signaling transmission process, UE1 and UE2 is sent to the upstream control signaling of MME and packet also will carry out turning through contrary path
Send out.In such a scenario, because purpose DeNB does not have corresponding S1AP ID mapping table, so that target after the completion of RN switching
The related S1AP signaling of UE cannot be forwarded to correct RN/MME by DeNB, lead to the failure of UE related signaling flow process.As shown in Figure 4
Switching mode in because there is no UE corresponding S1APID mapping table in purpose DeNB yet so that RN switching after the completion of target
The related S1AP signaling of UE cannot be forwarded to correct RN/MME after DeNB.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of signal processing method for via node switching and system,
Ensure normally to be forwarded with user's relevant control signaling in via node handoff procedure, reduce via node and switch to signaling
The impact sending.
In order to solve above-mentioned technical problem, the invention provides a kind of signal processing method for via node switching,
Wherein, the control signaling identifier map information of the user that via node is managed by the source base station belonging to via node send to
Described via node need to switch into target BS；Via node is after described source base station is switched to described target BS, described
Source base station and/or described target BS are processed to the user's control signaling receiving according to described map information.
Further, said method can also have the characteristics that：
The control signaling that described control signaling identifier map information includes base station or via node is described user's distribution
Mapping relations between protocol identifier and the control signaling protocol identifier that Mobility Management Entity is described user's distribution.
Further, said method can also have the characteristics that：
After described source base station or described target BS receive user's control signaling, entered according to the signaling tupe of this base station
Row is processed, and when signaling tupe is modification pattern, the control signaling identifier map information according to this user changes described use
Send to the destination of this user's control signaling after the control signaling of family, when signaling tupe is forward mode, to this user control
The destination of signaling processed forwards this user's control signaling；The signaling tupe of described source base station is forward mode and described mesh
The signaling tupe of mark base station is modification pattern；Or, the signaling tupe of described source base station is modification pattern and institute
The signaling tupe stating target BS is forward mode.
Further, said method can also have the characteristics that：
Described target BS receives after described map information the control signaling mark to described user according to described mapping relations
Know symbol to be updated；After described source base station is switched to described target BS, described source base station receives user to described via node
During control signaling, changed according to the control signaling identifier map information of this user and send after described user's control signaling to described
Target BS or the corresponding mobile management entity of user；When described target BS receives user's control signaling, according to this user's
Control signaling identifier map information sends to described source base station or described via node after changing described user's control signaling.
Further, said method can also have the characteristics that：
Described target BS judges whether the control with the described user of preservation in target BS after receiving described map information
Signaling identifier collisions processed, if conflict, described target BS is the new control signaling identifier of described user's distribution and notifies
To described source base station.
Further, said method can also have the characteristics that：
Described target BS receives after described map information the control signaling mark to described user according to described mapping relations
Know symbol to be updated；After described source base station is switched to described target BS, described target BS receives use to described via node
During the control signaling of family, the control signaling identifier map information according to this user sends to institute after changing described user's control signaling
State via node or the corresponding mobile management entity of user.
Further, said method can also have the characteristics that：
Described target BS judges whether the control with the described user of preservation in target BS after receiving described map information
Signaling identifier collisions processed, if conflict, described target BS is the new control signaling identifier of described user's distribution and notifies
To described via node and the corresponding mobile management entity of described user.
Further, said method can also have the characteristics that：
Described target BS by the user being serviced by described via node carry out path switching more newly arrive complete move
The user's control signaling identifier of dynamic management entity updates.
In order to solve above-mentioned technical problem, the invention provides the signaling processing system in a kind of switching for via node
System, including the source base station belonging to via node, via node and via node need to switch into target BS, described source base station,
The control signaling identifier map information of the user for being managed via node sends to described target BS；It is additionally operable to
Described via node after described source base station is switched to described target BS, according to described map information to the user's control receiving
Signaling is processed；Described target BS, for after described via node is switched to target BS from described source base station, according to
Described map information is processed to the user's control signaling receiving.
Further, said system can also have the characteristics that：
The signaling tupe of described source base station is to repair for the signaling tupe of forward mode and described target BS
Change pattern；Or, the signaling tupe of described source base station is the signaling tupe of modification pattern and described target BS
For forward mode；Described source base station or described target BS, are additionally operable to after receiving user's control signaling, according to the letter of this base station
Tupe is made to be processed, when signaling tupe is modification pattern, according to the control signaling identifier mapping letter of this user
Breath sends to the destination of this user's control signaling after changing described user's control signaling, and signaling tupe is forward mode
When, forward this user's control signaling to the destination of this user's control signaling.
Further, said system can also have the characteristics that：
Described target BS, is additionally operable to the control to described user according to described mapping relations after receiving described map information
Signaling identifier processed is updated；It is additionally operable to, after described via node is switched to described target BS from described source base station, receive
During to user's control signaling, the control signaling identifier map information according to this user sends after changing described user's control signaling
To described source base station or described via node；Described source base station, is additionally operable to be switched to from described source base station in described via node
After described target BS, when receiving user's control signaling, according to the control signaling identifier map information modification of this user
Send after user's control signaling to described target BS or the corresponding mobile management entity of user.
In order to solve above-mentioned technical problem, the invention provides the signaling processing system in a kind of switching for via node
System, including the source base station belonging to via node, via node and via node need to switch into target BS, described source base station,
The control signaling identifier map information of the user for being managed via node sends to described target BS；Described target
Base station, for carrying out more to the control signaling identifier of described user according to described mapping relations after receiving described map information
Newly；When being additionally operable to receive user's control signaling after via node is switched to described target BS from described source base station, according to this
The control signaling identifier map information of user sends to described via node or user couple after changing described user's control signaling
The mobile management entity answered.
By the present invention in that source base station notifies control signaling identifier map information to target BS, marked by simple
Know symbol mapping or update the smooth forwarding execution it is ensured that user-dependent S1 signaling process, reduce via node and switch to control
The impact that signaling is brought.
Brief description
Fig. 1 is that via node switches schematic diagram between different DeNB；
Fig. 2 is S1 chain of command agreement stack schematic diagram；
Fig. 3 is the schematic diagram according to switching mode in embodiment one and two；
Fig. 4 is the schematic diagram according to switching mode in embodiment three；
Fig. 5 is the flow chart of the signal processing method being used for via node switching in embodiment.
Specific embodiment
As shown in figure 5, the signal processing method for via node switching includes：During source base station belonging to via node is incited somebody to action
The control signaling identifier map information of the user that the node that continues is managed send to described via node need to switch into target base
Stand；, after source base station is switched to target BS, source base station and/or target BS are according to map information to the use receiving for via node
Family control signaling is processed.
Wherein, control signaling identifier map information includes the control signaling agreement that base station or via node distribute for user
Mapping relations between the control signaling protocol identifier that identifier and Mobility Management Entity distribute for user.
Wherein, user's control signaling refers to the control signaling of S1 Application Protocol.
The switching situation that the present invention is typically suitable for via node and is moved with identical speed with the terminal being managed.
In the present invention, said method includes three kinds of embodiments.Embodiment one and embodiment two are applied to cutting shown in Fig. 3
Change mode, that is, after the completion of switching, between target BS and mobile management entity, the information of the user of transmission is still via source base station
Transmission.Embodiment three is applied to the switching mode shown in Fig. 4, that is, after the completion of switching, target BS is directly and mobile management entity
Communicated.In this three embodiments, source base station to target BS send control signaling identifier map information be all switching
During complete.
Embodiment one
After source base station or target BS receive user's control signaling, processed according to the signaling tupe of this base station,
When signaling tupe is modification pattern, according to the control signaling identifier map information modification described user's control letter of this user
Send to the destination of this user's control signaling after order, when signaling tupe is forward mode, to this user's control signaling
Destination forwards this user's control signaling.
The signaling tupe of source base station is modification pattern for the signaling tupe of forward mode and target BS；Or
Person, the signaling tupe of source base station is the signaling tupe of modification pattern and target BS is forward mode.
Wherein, source base station or target BS modification user's control signaling include：Modification control signaling identifier, modification transmission
Network layer address and tunnel endpoint identifier.
In the present embodiment, source base station can be to pass through to the send control signaling mode of identifier map information of target BS
Handover request message sends control signaling identifier map information to target BS.This control signaling identifier map information can
Be relay node services one or more users control signaling identifier map information.
In the present embodiment, the signaling tupe of source base station and target BS can be configured by system default it is also possible to by
Source base station notifies to target BS after determining.Source base station can by the mode of the signaling tupe notice target BS of target BS
To be to send to target BS together with control signaling identifier map information, for example, pass through handover request message by control signaling
Identifier map information and signaling tupe are simultaneously sent to target BS, and target BS preserves user's relevant control after receiving
Signaling identifier map information, pattern information and the via node information preparing incision.
In the present embodiment, source base station specifically wraps to the processing method of user's relevant control signaling according to signaling tupe
Include：Source base station is according to the signaling identifier of the user's relevant control signaling receiving and corresponding S1 link information search pattern
Information；If what source base station received is the user's relevant control signaling sending from mobile management entity, and pattern is forward mode,
Then user's relevant control signaling is forwarded to corresponding target BS by source base station；If what source base station received is real from mobile management
User's relevant control signaling that body sends, and tupe is modification pattern, then source base station is carried out to user's relevant control signaling
Then user's relevant control signaling is forwarded to corresponding target BS by modification；If what source base station received is that purpose base station sends
User's relevant control signaling, and pattern be forward mode, then source base station user's relevant control signaling is forwarded to corresponding shifting
Dynamic management entity；If what source base station received is user's relevant control signaling that purpose base station sends, and tupe is modification
Pattern, then source base station user's relevant control signaling is modified and then user's relevant control signaling is forwarded to corresponding movement
Management entity.
In the present embodiment, source base station specifically wraps to the processing method of user's relevant control signaling according to signaling tupe
Include：Target BS searches mould according to the signaling identifier of the user's relevant control signaling receiving and corresponding S1 link information
Formula information；If what target BS received is the user's relevant control signaling sending from via node, and pattern is forward mode,
Then user's relevant control signaling is forwarded to corresponding source base station by target BS；If what target BS received is from via node
The user's relevant control signaling sending, and tupe is modification pattern, then target BS is carried out to user's relevant control signaling
Then user's relevant control signaling is forwarded to corresponding source base station by modification；If what target BS received is that source base station sends
User's relevant control signaling, and pattern be forward mode, then target BS by user's relevant control signaling be forwarded to corresponding in
Continue node；If what target BS received is user's relevant control signaling that source base station sends, and tupe is modification pattern,
Then target BS is modified to user's relevant control signaling and then user's relevant control signaling is forwarded to corresponding relaying section
Point.
Embodiment two
Target BS is updated to the control signaling identifier of described user according to mapping relations after receiving map information；
Via node, after source base station is switched to target BS, when source base station or target BS receive user's control signaling, is used according to this
The control signaling identifier map information at family sends to the destination of this user's control signaling after changing described user's control signaling.
This method also includes：Target BS judges whether the described user with preservation in target BS after receiving map information
Control signaling identifier collisions, if conflict, target BS is the new control signaling identifier of described user distribution and notifies
To source base station.Target BS can send newly assigned user's relevant control signaling identifier by switching request acknowledgement message and reflect
Information of penetrating is to source base station.
After target BS distributes new control signaling identifier and is sent to source base station, this method also includes：Source base station will
The newly assigned user's relevant control signaling identifier map information receiving is transmitted to via node；Via node is according to reception
The newly assigned user's relevant control signaling identifier map information arriving, the corresponding user's relevant control signaling identifier that updates is believed
Breath；After via node completes switching, relevant control signaling is sent according to the user's relevant control signaling identifier after updating.
Wherein, source base station or target BS modification user's control signaling include：Modification control signaling identifier, modification transmission
Network layer address and tunnel endpoint identifier.
In the present embodiment, source base station can be to pass through to the send control signaling mode of identifier map information of target BS
Handover request message sends control signaling identifier map information to target BS.It is related that target BS preserves user after receiving
Control signaling identifier map information and the via node information preparing incision.
Source base station and target BS are according to user's relevant control signaling identifier map information to user's relevant control signaling
Processed, further included：The S1 control signaling that the via node receiving or source base station are sent, target BS according to
User's relevant control signaling identifier map information modification signaling identifier information, transmission network layer address and endpoint of a tunnel mark
It is forwarded to source base station or via node after knowing symbol information；The S1 that the mobile management entity receiving or target BS are sent
Control signaling, source base station changes signaling identifier information, transmission network according to user's relevant control signaling identifier map information
It is forwarded to target BS or mobile management entity after layer address and tunnel endpoint identifier information.
Signal processing system in the switching for via node corresponding with said method includes via node, via node
Affiliated source base station and via node need to switch into target BS, the processing mode of each entity and phase described in said method
With here is omitted.
Embodiment three
Target BS is updated to the control signaling identifier of user according to mapping relations after receiving map information；Relaying
Node after source base station is switched to target BS, when target BS receives user's control signaling, according to the control signaling of this user
Identifier map information sends to via node or the corresponding mobile management entity of user after changing described user's control signaling.
Source base station to target BS send control signaling identifier map information mode be by handover request message will
Control signaling identifier map information sends to target BS.
Target BS judges whether the control signaling mark with the described user of preservation in target BS after receiving map information
Know symbol conflict, if conflict, target BS be the new control signaling identifier of described user distribution and notify to via node with
And the corresponding mobile management entity of described user.
Target BS carries out path switching by the user being serviced by described via node and more newly arrives and complete in moving tube
The user's control signaling identifier of reason entity updates.
Specific embodiment can be crossed below the present invention is elaborated.
Specific embodiment one
As shown in figure 3, via node RN is switched to target DeNB2 from source DeNB1, when RN is switched to target from source DeNB1
During DeNB2, participate in switching so that servicing MME and S-GW of UE1 and UE2 simultaneously because UE1 and UE2 that RN is serviced does not have
Do not perceive the change in path and UE between.Therefore from MME/S-GW be sent to the descending control signaling of UE1 and UE2 and packet according to
So to first be routed to source DeNB1, then target DeNB2 is forwarded to by source DeNB1, finally by DeNB2 by RN be forwarded to UE1 and
UE2, in turn, UE1 and UE2 is sent to the upstream control signaling of MME and packet also will be forwarded through contrary path.?
Under this scene, because purpose DeNB does not have corresponding S1AP ID mapping table so that RN switching after the completion of target DeNB no
The related S1AP signaling of UE is forwarded to correct RN/MME by method.In this specific embodiment, by source DeNB1, user is related
The mapping of control signaling identifier and pattern information are sent to target BS, and source DeNB1 and target DeNB are subsequently according to pattern information
User's relevant control signaling is processed.For the difference of pattern distribution, the present embodiment can be divided into embodiment one and reality again
Apply mode two, be described respectively.
Embodiment one
Via node RN is initially accessed DeNB1, and carries out Un port communications by DeNB1.Via node RN is in movement
During, the adjacent base station of periphery is scanned measuring, and sends measurement report to DeNB1.DeNB1 is according to the survey receiving
Amount report, judges that RN needs to switch over.DeNB1 selects DeNB2 as target BS, and disappears to DeNB2 transmission handover request
Breath, comprises user-dependent control signaling identifier map information and the tupe being serviced with RN in handover request message
Information.Tupe is that requirement DeNB2 only carries out forwarding the forward mode of operation, and accordingly, DeNB1 is by itself corresponding and RN
The user-dependent control signaling tupe being serviced is set to modification pattern.The switching that DeNB2 receives DeNB1 transmission please
After seeking message, DeNB2 preserves user's relevant control signaling identifier map information, pattern information and the relaying section preparing incision
Point information, then sends switch acknowledgment message to DeNB1.
After RN completes switching, if DeNB1 receives user's relevant control signaling of mobile management entity transmission, DeNB1
Signaling identifier according to the user's relevant control signaling receiving and corresponding S1 link information search corresponding user, such as
Really this user belongs to the user that the RN having switched is serviced, and DeNB1 searches corresponding pattern information.DeNB1 finds right
The tupe answered is modification pattern, then DeNB1 modifies to user's relevant control signaling, and concrete modification includes changing control
Then user's relevant control signaling is forwarded to by signaling identifier, modification transmission network layer address and tunnel endpoint identifier
DeNB2.After DeNB2 receives this user's relevant control signaling, according to the signaling mark of the user's relevant control signaling receiving
Symbol and corresponding S1 link information search corresponding user, if this user belongs to the user that the RN of mobile incision is serviced,
DeNB2 searches corresponding pattern information.It is forward mode that DeNB2 finds corresponding tupe, then DeNB2 is related by user
Control signaling is forwarded to RN.
Accordingly, if DeNB2 receives user's relevant control signaling of RN transmission, DeNB2 is according to the user receiving
The signaling identifier of relevant control signaling and corresponding S1 link information search corresponding user, if this user belongs to switching
The user that the RN accessing is serviced, DeNB2 searches corresponding pattern information.It is to forward that DeNB2 finds corresponding tupe
Pattern, then DeNB2 user's relevant control signaling is forwarded to RN and is initially accessed base station DeNB1.It is related that DeNB1 receives this user
After control signaling, the signaling identifier according to the user's relevant control signaling receiving and the lookup of corresponding S1 link information are right
The user answering, if this user belongs to the user that the RN that mobile handoff walks is serviced, DeNB1 searches corresponding pattern information.
It is modification pattern that DeNB1 finds corresponding tupe, then DeNB1 modifies to user's relevant control signaling, specifically repaiies
Change including modification control signaling identifier, modification transmission network layer address and tunnel endpoint identifier, then by related for user control
Signaling processed is forwarded to the corresponding mobile management entity of user.
Embodiment two
Via node RN is initially accessed DeNB1, and carries out Un port communications by DeNB1.Via node RN is in movement
During, the adjacent base station of periphery is scanned measuring, and sends measurement report to DeNB1.DeNB1 is according to the survey receiving
Amount report, judges that RN needs to switch over.DeNB1 selects DeNB2 as target BS, and disappears to DeNB2 transmission handover request
Breath, comprises user-dependent control signaling identifier map information and the tupe being serviced with RN in handover request message
Information.Tupe is that requirement DeNB2 modifies the modification pattern of operation, and accordingly, DeNB1 is by itself corresponding and RN institute
The user-dependent control signaling tupe of service is set to forward mode.DeNB2 receives the handover request of DeNB1 transmission
After message, DeNB2 preserves user's relevant control signaling identifier map information, pattern information and the via node preparing incision
Information, then sends switch acknowledgment message to DeNB1.
After RN completes switching, if DeNB1 receives user's relevant control signaling of mobile management entity transmission, DeNB1
Signaling identifier according to the user's relevant control signaling receiving and corresponding S1 link information search corresponding user, such as
Really this user belongs to the user that the RN having switched is serviced, and DeNB1 searches corresponding pattern information.DeNB1 finds right
The tupe answered is forward mode, then user's relevant control signaling is forwarded to DeNB2 by DeNB1.DeNB2 receives this user
After relevant control signaling, the signaling identifier according to the user's relevant control signaling receiving and corresponding S1 link information are looked into
Look for corresponding user, if this user belongs to the user that the RN of mobile incision is serviced, DeNB2 searches corresponding pattern information.
It is modification pattern that DeNB2 finds corresponding tupe, then DeNB2 modifies to user's relevant control signaling, specifically repaiies
Change including modification control signaling identifier, modification transmission network layer address and tunnel endpoint identifier, then by related for user control
Signaling processed is forwarded to RN.
Accordingly, if DeNB2 receives user's relevant control signaling of RN transmission, DeNB2 is according to the user receiving
The signaling identifier of relevant control signaling and corresponding S1 link information search corresponding user, if this user belongs to switching
The user that the RN accessing is serviced, DeNB2 searches corresponding pattern information.It is modification that DeNB2 finds corresponding tupe
Pattern, then DeNB2 user's relevant control signaling is modified, concrete modification include change control signaling identifier, modification pass
Then user's relevant control signaling is forwarded to RN and is initially accessed base station DeNB1 by defeated network layer address and tunnel endpoint identifier.
After DeNB1 receives this user's relevant control signaling, signaling identifier according to the user's relevant control signaling receiving and
Corresponding S1 link information searches corresponding user, if this user belongs to the user that the RN that mobile handoff walks is serviced, DeNB1
Search corresponding pattern information.It is modification pattern that DeNB1 finds corresponding tupe, then DeNB1 is by user's relevant control
Signaling is forwarded to mobile management entity.
Specific embodiment two
As shown in figure 3, user's relevant control signaling identifier map information is sent to target BS, target base by source base station
Stand and user's relevant control signaling identifier map information is updated and feeds back to source base station.After via node completes switching,
Source base station and target BS are processed to control signaling according to respective user's relevant control signaling identifier map information.
Via node RN is initially accessed DeNB1, and carries out Un port communications by DeNB1.Via node RN is in movement
During, the adjacent base station of periphery is scanned measuring, and sends measurement report to DeNB1.DeNB1 is according to the survey receiving
Amount report, judges that RN needs to switch over.DeNB1 selects DeNB2 as target BS, and disappears to DeNB2 transmission handover request
Breath, comprises the user-dependent control signaling identifier map information being serviced with RN in handover request message.DeNB2 receives
After the handover request message that DeNB1 sends, according to the user's relevant control signaling identifier map information receiving, judge whether
With DeNB2 existing user relevant control signaling identifier collisions, in the event of conflicting, the then new control signaling mark of DeNB2 distribution
Know and accord with and DeNB1 is sent to by switching request acknowledgement message.If newly assigned user's relevant control letter that DeNB1 receives
Make identifier map information, then DeNB1 forwards that information to via node RN, via node RN is according to the new distribution receiving
User's relevant control signaling identifier map information, corresponding update user's relevant control signaling identifier information.
After via node RN completes switching, related S1 is sent according to the user's relevant control signaling identifier after updating and controls
Signaling.If DeNB2 receives user's relevant control signaling of RN transmission, DeNB2 is according to the user's relevant control letter receiving
The signaling identifier of order searches corresponding user, if this user belongs to switches the user that the RN accessing is serviced, DeNB2 pair
User's relevant control signaling is modified, concrete modification include change control signaling identifier, modification transmission network layer address and
Then user's relevant control signaling is forwarded to RN and is initially accessed base station DeNB1 by tunnel endpoint identifier.DeNB1 receives this
After user's relevant control signaling, the signaling identifier according to the user's relevant control signaling receiving searches corresponding user, such as
Really this user belongs to the user that the RN that mobile handoff walks is serviced, then DeNB1 modifies to user's relevant control signaling, specifically
Modification includes changing control signaling identifier, modification transmission network layer address and tunnel endpoint identifier, then that user is related
Control signaling is forwarded to the corresponding mobile management entity of user.
Accordingly, if DeNB1 receives user's relevant control signaling of mobile management entity transmission, DeNB1 is according to connecing
The signaling identifier of the user's relevant control signaling receiving searches corresponding user, if this user belongs to the RN having switched
The user being serviced, then DeNB1's D modifies to user's relevant control signaling, and concrete modification includes changing control signaling mark
Then user's relevant control signaling is forwarded to DeNB2 by symbol, modification transmission network layer address and tunnel endpoint identifier.DeNB2
After receiving this user's relevant control signaling, the signaling identifier according to the user's relevant control signaling receiving is searched corresponding
User, if this user belongs to the user that the RN of mobile incision is serviced, DeNB2 repaiies to user's relevant control signaling
Change, concrete modification includes changing control signaling identifier, modification transmission network layer address and tunnel endpoint identifier, then will use
Family relevant control signaling is forwarded to via node.
Specific embodiment three
As shown in figure 4, in handoff procedure, user's relevant control signaling identifier map information is sent to target by source base station
Base station, target BS is updated and feeds back to user's relevant control signaling identifier map information source base station and relaying section
Point.After relay nodes complete switching, target BS enters to control signaling according to user's relevant control signaling identifier map information
Row is processed.
Relay nodes RN are initially accessed DeNB1, and carry out Un port communications by DeNB1.Relay nodes RN are in movement
During, the adjacent base station of periphery is scanned measuring, and sends measurement report to DeNB1.DeNB1 is according to the survey receiving
Amount report, judges that RN needs to switch over.DeNB1 selects DeNB2 as target BS, and disappears to DeNB2 transmission handover request
Breath, comprises the user-dependent control signaling identifier map information being serviced with RN in handover request message.DeNB2 receives
After the handover request message that DeNB1 sends, according to the user's relevant control signaling identifier map information receiving, judge whether
With DeNB2 existing user relevant control signaling identifier collisions, in the event of conflicting, the then new control signaling mark of DeNB2 distribution
Know and accord with and DeNB1 is sent to by switching request acknowledgement message, DeNB1 forwards that information to via node RN further, in
, according to the newly assigned user's relevant control signaling identifier map information receiving, corresponding renewal user is related for the node RN that continues
Control signaling identifier information.Additionally, DeNB2 can carry out path switching by the user being serviced by via node updating,
To update the user's relevant control signaling identifier information preserving in mobile management entity.
After via node RN completes switching, related S1 is sent according to the user's relevant control signaling identifier after updating and controls
Signaling.If DeNB2 receives user's relevant control signaling of RN transmission, DeNB2 is according to the user's relevant control letter receiving
The signaling identifier of order searches corresponding user, if this user belongs to switches the user that the RN accessing is serviced, DeNB2 pair
User's relevant control signaling is modified, concrete modification include change control signaling identifier, modification transmission network layer address and
Then user's relevant control signaling is forwarded to the corresponding mobile management entity of user by tunnel endpoint identifier.
Accordingly, if DeNB2 receives user's relevant control signaling of mobile management entity transmission, DeNB2 is according to connecing
The signaling identifier of the user's relevant control signaling receiving searches corresponding user, if this user belongs to the use that RN is serviced
Family, then DeNB2 user's relevant control signaling is modified, concrete modification include change control signaling identifier, modification transmission
Then user's relevant control signaling is forwarded to relay nodes by network layer address and tunnel endpoint identifier.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Mutually combination in any.
Certainly, the present invention also can have other various embodiments, in the case of without departing substantially from present invention spirit and its essence, ripe
Know those skilled in the art to make various corresponding changes according to the present invention and deform, but these corresponding changes and deformation
The protection domain of appended claims of the invention all should be belonged to.
One of ordinary skill in the art will appreciate that all or part of step in said method can be instructed by program
Related hardware completes, and described program can be stored in computer-readable recording medium, such as read only memory, disk or CD
Deng.Alternatively, all or part of step of above-described embodiment can also be realized using one or more integrated circuits.Accordingly
Ground, each module/unit in above-described embodiment can be to be realized in the form of hardware, it would however also be possible to employ the shape of software function module
Formula is realized.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (11)
1. a kind of signal processing method for via node switching, wherein,
The control signaling identifier map information of the user that via node is managed by the source base station belonging to via node send to
Described via node need to switch into target BS；
Via node after described source base station is switched to described target BS, described source base station and/or described target BS according to
Described map information is processed to the user's control signaling receiving；
The control signaling agreement that described control signaling identifier map information includes base station or via node is described user's distribution
Mapping relations between identifier and the control signaling protocol identifier that Mobility Management Entity is described user's distribution；Described use
Family control signaling specifically includes：The control signaling of S1 Application Protocol.
2. the method for claim 1 it is characterised in that
After described source base station or described target BS receive user's control signaling, at the signaling tupe of this base station
Reason, when signaling tupe is modification pattern, according to the control signaling identifier map information modification described user control of this user
Send to the destination of this user's control signaling after signaling processed, when signaling tupe is forward mode, to this user's control letter
The destination of order forwards this user's control signaling；
The signaling tupe of described source base station is modification mould for the signaling tupe of forward mode and described target BS
Formula；Or, the signaling tupe of described source base station is the signaling tupe of modification pattern and described target BS is to turn
The pattern of sending out.
3. the method for claim 1 it is characterised in that
Described target BS receives after described map information the control signaling identifier to described user according to described mapping relations
It is updated；
After described source base station is switched to described target BS, described source base station receives user's control signaling to described via node
When, the control signaling identifier map information according to this user sends to described target BS after changing described user's control signaling
Or the corresponding mobile management entity of user；When described target BS receives user's control signaling, according to the control signaling of this user
Identifier map information sends to described source base station or described via node after changing described user's control signaling.
4. method as claimed in claim 3 it is characterised in that
Described target BS judges whether the control letter with the described user of preservation in target BS after receiving described map information
Make identifier collisions, if conflict, described target BS is the new control signaling identifier of described user's distribution and notifies to institute
State source base station.
5. the method for claim 1 it is characterised in that
Described target BS receives after described map information the control signaling identifier to described user according to described mapping relations
It is updated；
After described source base station is switched to described target BS, described target BS receives user's control signaling to described via node
When, the control signaling identifier map information according to this user sends to described via node after changing described user's control signaling
Or the corresponding mobile management entity of user.
6. method as claimed in claim 5 it is characterised in that
Described target BS judges whether the control letter with the described user of preservation in target BS after receiving described map information
Make identifier collisions, if conflict, described target BS is the new control signaling identifier of described user's distribution and notifies to institute
State via node and the corresponding mobile management entity of described user.
7. method as claimed in claim 6 it is characterised in that
Described target BS carries out path switching by the user being serviced by described via node and more newly arrives and complete in moving tube
The user's control signaling identifier of reason entity updates.
8. the signal processing system in a kind of switching for via node, including the source base station belonging to via node, via node
With via node need to switch into target BS it is characterised in that
Described source base station, the control signaling identifier map information of the user for being managed via node sends to described mesh
Mark base station；It is additionally operable to after described via node is switched to described target BS from described source base station, according to described map information
The user's control signaling receiving is processed；
Described target BS, for after described via node is switched to target BS from described source base station, according to described mapping
Information is processed to the user's control signaling receiving；
The control signaling agreement that described control signaling identifier map information includes base station or via node is described user's distribution
Mapping relations between identifier and the control signaling protocol identifier that Mobility Management Entity is described user's distribution；Described use
Family control signaling specifically includes：The control signaling of S1 Application Protocol.
9. system as claimed in claim 8 it is characterised in that
The signaling tupe of described source base station is modification mould for the signaling tupe of forward mode and described target BS
Formula；Or, the signaling tupe of described source base station is the signaling tupe of modification pattern and described target BS is to turn
The pattern of sending out；
Described source base station or described target BS, are additionally operable to after receiving user's control signaling, and the signaling according to this base station is processed
Pattern is processed, when signaling tupe is modification pattern, according to the control signaling identifier map information modification of this user
Send to the destination of this user's control signaling after described user's control signaling, when signaling tupe is forward mode, to this
The destination of user's control signaling forwards this user's control signaling.
10. system as claimed in claim 8 it is characterised in that
Described target BS, is additionally operable to according to described mapping relations, the control of described user be believed after receiving described map information
Identifier is made to be updated；It is additionally operable to, after described via node is switched to described target BS from described source base station, receive use
During the control signaling of family, the control signaling identifier map information according to this user sends to institute after changing described user's control signaling
State source base station or described via node；
Described source base station, is additionally operable to, after described via node is switched to described target BS from described source base station, receive user
During control signaling, changed according to the control signaling identifier map information of this user and send after described user's control signaling to described
Target BS or the corresponding mobile management entity of user.
Signal processing system in a kind of 11. switchings for via node, including the source base station belonging to via node, via node
With via node need to switch into target BS it is characterised in that
Described source base station, the control signaling identifier map information of the user for being managed via node sends to described mesh
Mark base station；
Described target BS, for after receiving described map information according to described mapping relations the control signaling to described user
Identifier is updated；It is additionally operable to after via node is switched to described target BS from described source base station receive user's control letter
When making, the control signaling identifier map information according to this user sends after changing described user's control signaling to described relaying section
Point or the corresponding mobile management entity of user；It is described that described control signaling identifier map information includes base station or via node
The control signaling protocol identifier of user's distribution and Mobility Management Entity are the control signaling protocol-identifier of described user's distribution
Mapping relations between symbol；Described user's control signaling specifically includes：The control signaling of S1 Application Protocol.
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| CN201110155417.1A CN102821375B (en) | 2011-06-10 | 2011-06-10 | Signaling processing method and system used for switching relay node |
| PCT/CN2012/073918 WO2012167665A1 (en) | 2011-06-10 | 2012-04-12 | Signaling processing method and system for relay node switching |
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| CN101841824A (en) * | 2009-03-17 | 2010-09-22 | 大唐移动通信设备有限公司 | Method, system and relay equipment for implementing cell switch |
| CN102076041A (en) * | 2011-01-30 | 2011-05-25 | 大唐移动通信设备有限公司 | Resource allocation method and device |
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| CN101841824A (en) * | 2009-03-17 | 2010-09-22 | 大唐移动通信设备有限公司 | Method, system and relay equipment for implementing cell switch |
| CN102076041A (en) * | 2011-01-30 | 2011-05-25 | 大唐移动通信设备有限公司 | Resource allocation method and device |
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