CN104219722B - Migration process, moving method and the device of dual link radio bearer - Google Patents
Migration process, moving method and the device of dual link radio bearer Download PDFInfo
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- CN104219722B CN104219722B CN201410223153.2A CN201410223153A CN104219722B CN 104219722 B CN104219722 B CN 104219722B CN 201410223153 A CN201410223153 A CN 201410223153A CN 104219722 B CN104219722 B CN 104219722B
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000013508 migration Methods 0.000 title claims abstract description 50
- 230000005012 migration Effects 0.000 title claims abstract description 50
- 230000009977 dual effect Effects 0.000 title claims abstract description 47
- 230000008569 process Effects 0.000 title claims abstract description 28
- 238000003672 processing method Methods 0.000 claims abstract description 5
- 238000013507 mapping Methods 0.000 claims description 15
- 238000005516 engineering process Methods 0.000 abstract description 12
- 230000007704 transition Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 12
- 230000008859 change Effects 0.000 description 11
- 238000012986 modification Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000004224 protection Effects 0.000 description 7
- 230000000977 initiatory effect Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000004080 punching Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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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
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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Abstract
The present invention provides migration process, moving method and the devices of a kind of dual link radio bearer, wherein, the emigration processing method includes: that master base station is that Data Radio Bearer to be migrated distributes new Data Radio Bearer mark, wherein, used Data Radio Bearer mark is different from the master base station and from base station for the new Data Radio Bearer mark；The master base station sends the message that Data Radio Bearer migration is carried out for notifying user equipment to user equipment, wherein the new radio bearer identification is carried in the message.It using above-mentioned technical proposal provided by the invention, solves in the related technology, there are the safeties that the dual link that terminal the problems such as safety, is improved caused by Key Exposure carries in the transition process between base station for dual link radio bearer.
Description
Technical field
The present invention relates to the communications field, more particularly, to a kind of migration process of dual link radio bearer, moving method and
Device.
Background technique
With the continuous evolution of wireless communication technique and standard, mobile Packet Service has obtained huge development, unit/terminal
Data throughput capabilities constantly promoted.By taking long term evolution (Long Term Evolution, LTE) system as an example, in 20M band
The data of downlink maximum rate 100Mbps can be supported to transmit in width, LTE (LTE Advanced) network of subsequent enhancing
In, the transmission rate of data will be promoted further, it might even be possible to reach 1Gbps.
The user face data protocol stack of existing LTE is as shown in Figure 1, from core net through user level General Packet Radio Service
(General Packet Radio Service, referred to as GPRS) tunnel protocol (GPRS Tunnelling Protocol
For the User Plane, referred to as GTP-U) downlink data that receives, pass through Packet Data Convergence Protocol after unpacking
(Packet Data Convergence Protocol, referred to as PDCP) sublayer, wireless spread-spectrum technology (Radio Link
Control, referred to as RLC) protocol sublayers, media access control (Medium Access Control, referred to as MAC) agreement
Sublayer and physical layer (PHYsics, referred to as PHY) processing are sent to user equipment (User Equipment, referred to as UE)；On
The transmission of row data and downlink are exactly the opposite.The data transmission link between network and UE is one-to-one private link at present,
Therefore the signal quality of this link and the resource size used determine data transmission performance between the two.If link uses
Resource be restricted or signal quality is poor, then the user experience of UE will decline, and here it is present mobile operator
The huge challenge faced although network capacity expands year by year, but still is unable to catch up with increase and the user couple of user terminal quantity
The demand of data business volume, in Fig. 1, IP is the abbreviation of Internet protocol (Internet Protocol), and UDP/IP is user
The abbreviation of data protocol (User Date Protocol)/Internet protocol.
In order to meet the increased requirement and business geographically uneven feature of data business volume, operator is in portion
Affix one's name to New Generation of Communication network (such as LTE) during, also increase low power nodes (Low Power Node, referred to as
LPN) or cell (Small Cell) or micro-base station (Pico eNB, wherein eNB is the abbreviation of evolved Node B,
ENB is properly termed as the node B of evolution) enhancing of Lai Jinhang hot spot.With the increase of LPN cell, network deployed environment becomes more
Complexity, while also bringing some problems.Firstly, because LPN cell comparatively coverage area compared to macrocell (Macro
Cell) much smaller, capacity is also relatively small, and certain LPN cells may be taken easily by user and cause load excessively high, from
And the handling capacity of user data is influenced, and other LPN cell or macrocell can be on relatively low load level, such as
Fruit wants balanced load, needs network side to execute load balancing operation, but the process is inflexible, especially when cell is more, this
Load unevenness caused by the shortage of kind flexibility is just more serious；In addition, since LPN number of cells is relatively more, user equipment
When (or being terminal) occurs mobile in network, frequent handover between cells (Handover) will lead to, so as to cause frequent
Data service terminal even call drop the problems such as, this also results in the decline of the data throughout and user experience of user.Together
When this frequent switching also result in terminal and network, especially core net and will receive a large amount of signaling impact, so as to
System resource congestion is caused even to be paralysed.With the increase of operator in future and the LPN number of cells of personal deployment, above-mentioned feelings
Condition can be more and more serious, therefore many companies and operator tend to seek a kind of new enhanced scheme, dual link at present
(Dual Connectivity) is exactly one of them, and terminal can keep connecting with two network nodes simultaneously under dual link, than
If UE keeps connecting with macrocell and LPN cell simultaneously, when network load is unbalanced, network side can be existed with real-time monitoring terminal
Transmitted data amount on two nodes, while if when UE is mobile or other reasons cause LPN cell to change, another cell
It can also keep connecting, and this change not will lead to excessive signaling impact.
But UE and network connection must assure that safety.Under single connection scene, according to existing protocol, as shown in Fig. 2, wirelessly
Access layer (Access Stratum, referred to as AS) between access network elements (such as eNB) and user equipment possesses identical
Safe context can derive the encryption key of AS control plane according to the key including base station key KeNB
(KRRCenc) and the encryption key (KUPenc) in tegrity protection key (KRRCint) and user face.Between eNB and UE
When carrying out data transmission, transmitting terminal utilizes control plane tegrity protection key (KRRCint) and encryption key (KRRCenc), with
And assignment algorithm implements integrity protection and encryption to control face data, and then can be according to identical key and algorithm in receiving end
Reverse operating (decryption and integrity protection verifying) is executed, user face can then be utilized by sending and receiving both sides for user face data
Operation is encrypted and decrypted to user face data in encryption key (KUPenc).Wherein the initial KeNB of the base station key is by core
Net calculates and is then sent to eNB.During subsequent, for example, for prevent PDCP sequence number overturn or UE switch when,
KeNB can also update.By taking switching as an example, switches if it is the S1 of generation, then switch the KeNB of target side still by core net
It calculates；But if there are two types of the derived method possibility for then switching the KeNB (or KeNB*) of target side happens is that X2 switches,
As shown in figure 3, one is from the KeNB of switching source derivation, it is another close by next-hop (Next Hop, referred to as NH)
Key derives from, and wherein NH key is to be calculated by core net and be sent to eNB.
Under dual link scene, if i.e. connection is carried from service using the data distribution method that non-bearing separates
Gateway (Service-Gateway, referred to as S-GW) is divided into two groups, respectively by master base station (Master eNB, referred to as
MeNB connection) and from base station (Secondary SeNB, referred to as SeNB) and UE is established, as shown in Figure 4.UE and access two
Node needs that respective connection is protected to carry respectively using different security keys.Wherein the base station key S-KeNB on SeNB by
Base station key KeNB on MeNB derives from.When the KeNB of MeNB is changed, SeNB can be deleted；But the S- on SeNB
When KeNB is changed, the connection on MeNB is impregnable.The scene that S-KeNB is changed includes: by KeNB key on MeNB
S-KeNB caused by changing is changed, the S-KeNB key modification that MeNB is actively initiated, the PDCP COUNT value hair carried on SeNB
When raw reversion or caused security key change etc. is reconfigured in other SeNB.
In practice, it is contemplated that the mobility of UE and the load of network etc. change, and the connection carrying of UE may be in MeNB
It is migrated between SeNB, i.e. carrying on MeNB may be migrated to SeNB, undertake its data transmit-receive by SeNB；It can also be with
Occur reversely, i.e. carrying is migrated back MeNB on SeNB.In this process, the mark of carrying will not change.In LTE system
In system, there are many modes for the division methods of the carrying of UE, have multiple marks accordingly and correspond to the carrying.Wherein in base station side
Data Radio Bearer (Data Radio Bearer, referred to as DRB) can be distributed for it identify (DRB id)；In core-network side meeting
Evolved packet system (Evolved Packet System, referred to as EPS) load identification (ESP id), and enhancing are distributed for it
Radio access bearer (Enhanced Radio Access Bearer, referred to as E-RAB) identifies (E-RAB id) etc..Wherein
DRB id and EPS id and E-RAB id is to correspond or map.If some corresponding radio bearer of DRB id of access layer
It is deleted, the corresponding ground loading of EPS id for corresponding to Non-Access Stratum is also required to be deleted.Under the dual link scene
Load bearing migration during, the practical only change concerning its user plane path, carrying will not change, therefore it is corresponded to
Radio bearer identification and ground loading mark and its corresponding relationship will not all change.
But this migration of carrying may bring the security risk of secret reuse.Based on mentioned-above MeNB and SeNB
Premised on possessing respective separate keys, as shown in figure 5, the carrying 2 on MeNB has been migrated to SeNB originally, in SeNB
During upper transmission, carries 2 PDCP COUNT value and inverted, according to existing protocol, need to be implemented the update of S-KeNB, but
This will not have an impact MeNB, and KeNB still maintains constant.But when carrying 2 is migrated back MeNB again, it is possible to
The data packet that will appear the same count value COUNT of carrying is added with close problem by the same key reconsul, as shown in fig. 6, this
When Encryption Algorithm all input keys, load identification, count value COUNT etc. can all be reused, in security fields, key
The problems such as recycling of equal encryption parameters will lead to Key Exposure, it is therefore desirable to prevent the problem.
Summary of the invention
For in the related technology, there are pacify caused by Key Exposure in transition process between base station for dual link radio bearer
The problems such as full property, the present invention provides migration process, moving method and the devices of a kind of dual link radio bearer, at least to solve
Above-mentioned technical problem.
In order to achieve the above object, according to an aspect of the invention, there is provided a kind of migration of dual link radio bearer
Processing method, comprising: master base station is that Data Radio Bearer to be migrated distributes new Data Radio Bearer mark, wherein described
Used Data Radio Bearer mark is different from the master base station and from base station for new Data Radio Bearer mark；Institute
It states master base station and sends the message for carrying out Data Radio Bearer migration for notifying user equipment to user equipment, wherein the message
In carry the new radio bearer identification.
Preferably, new radio bearer identification evolved packet system carrying mark corresponding with the Data Radio Bearer
There are mapping relations for knowledge.
Preferably, master base station is that Data Radio Bearer to be migrated distributes before new Data Radio Bearer mark, described
Method further include: in the master base station and/or the progress key updating from base station, removing current data radio bearer does not make
Data Radio Bearer identification record.
Preferably, master base station distributes before new Data Radio Bearer mark, the method also includes: the master base station will
The Data Radio Bearer is migrated by master base station to behind base station, then by migrating back main base from base station by the Data Radio Bearer
It stands and/or the key of the source base station of load bearing migration is updated and the key of the target BS of load bearing migration does not update.
In order to achieve the above object, according to a further aspect of the invention, a kind of dual link radio bearer is additionally provided
Moving method, comprising: user equipment, which is received, carries out Data Radio Bearer migration for notifying user equipment from master base station
Message, wherein the message carries the new Data Radio Bearer mark of the master base station distribution, which wirelessly holds
Mark is carried for identifying Data Radio Bearer to be migrated, the new Data Radio Bearer mark and the master base station and from base
Used Data Radio Bearer mark of standing is different；The user equipment is identified according to the new Data Radio Bearer
The Data Radio Bearer is migrated to target BS.
Preferably, the user equipment identifies according to the new Data Radio Bearer and migrates the Data Radio Bearer
When to target BS, the method also includes: the user equipment makes new the Data Radio Bearer mark and the data
The corresponding evolved packet system load identification of radio bearer is corresponding, and deletes the original data of the Data Radio Bearer and wirelessly hold
Carry mark.
In order to achieve the above object, according to a further aspect of the invention, a kind of dual link radio bearer is additionally provided
Migration process device is applied to master base station, comprising: distribution module, for distributing new number for Data Radio Bearer to be migrated
According to radio bearer identification, wherein the new Data Radio Bearer mark is used with the master base station and from base station
Data Radio Bearer mark is different；Sending module, for user equipment send for notifying user equipment carry out data without
The message of line load bearing migration, wherein the new radio bearer identification is carried in the message.
Preferably, the distribution module is also used to corresponding with the Data Radio Bearer in the new radio bearer identification
Evolved packet system load identification there are when mapping relations, distribute the new Data Radio Bearer mark.
In order to achieve the above object, according to a further aspect of the invention, a kind of dual link radio bearer is additionally provided
Moving apparatus, comprising: receiving module, for receiving moving for notifying user equipment progress Data Radio Bearer from master base station
The message of shifting, wherein the message carries the new Data Radio Bearer mark of master base station distribution, the new data without
Line load identification for identifying Data Radio Bearer to be migrated, the new Data Radio Bearer mark and the master base station and
It is described that from base station, used Data Radio Bearer mark is different；Transferring module, for according to the new data without
Line load identification migrates the Data Radio Bearer to target BS.
Preferably, further includes: mapping block is wirelessly held for identifying the new Data Radio Bearer with the data
It is corresponding to carry corresponding evolved packet system load identification, and deletes the original Data Radio Bearer mark of the Data Radio Bearer
Know.
In order to achieve the above object, according to a further aspect of the invention, a kind of base station, including the above are additionally provided
Dual link radio bearer migration process device.
In order to achieve the above object, according to a further aspect of the invention, a kind of user equipment is additionally provided, including above
The moving apparatus of the dual link radio bearer.
Through the invention, using master base station to distribute for Data Radio Bearer to be migrated with master base station and from base station has made
Used Data Radio Bearer identifies the technological means of different new Data Radio Bearer marks, solves the relevant technologies
In, there are the problems such as safety, improve caused by Key Exposure in the transition process between base station for dual link radio bearer
The safety of the dual link carrying of terminal.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the LTE user face protocol stack schematic diagram according to the relevant technologies；
Fig. 2 is key derivation and protection mechanism schematic diagram in the network of the relevant technologies；
Fig. 3 is the method schematic diagram derived from according to base station key under the handoff scenario of the relevant technologies；
Fig. 4 is according to the dual link schematic diagram of a scenario of the relevant technologies；
Fig. 5 is the dual link secret reuse schematic diagram of a scenario according to the relevant technologies；
Fig. 6 is the encryption method schematic diagram according to the relevant technologies；
Fig. 7 is the flow chart according to the emigration processing method of the dual link radio bearer of the embodiment of the present invention；
Fig. 8 is the structural block diagram according to the migration process device of the dual link radio bearer of the embodiment of the present invention；
Fig. 9 is the flow chart according to the moving method of the dual link radio bearer of the embodiment of the present invention；
Figure 10 is the structural block diagram according to the moving apparatus of the dual link radio bearer of the embodiment of the present invention；
Figure 11 is another structural block diagram according to the moving apparatus of the dual link radio bearer of the preferred embodiment of the present invention；
Figure 12 is the load bearing migration flow diagram actively triggered according to the master base station of the preferred embodiment of the present invention；
Figure 13 is the load bearing migration flow diagram actively triggered from base station according to the preferred embodiment of the present invention；
Figure 14 is the load bearing migration flow diagram actively triggered from base station according to the preferred embodiment of the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
For in the related technology, in dual link radio bearer since secret reuse etc. causes in the transition process between base station
Safety the problems such as, following embodiment provides corresponding solution, in detail it is as follows.
Fig. 7 is the flow chart according to the emigration processing method of the dual link radio bearer of the embodiment of the present invention.Such as Fig. 7 institute
Show, the method comprising the steps of S702-S706:
Step 702, master base station is that Data Radio Bearer to be migrated distributes new Data Radio Bearer mark, and wherein this is new
Data Radio Bearer mark with master base station and from base station, used Data Radio Bearer mark is equal different；
Step 704, master base station sends to user equipment and carries out disappearing for Data Radio Bearer migration for notifying user equipment
Breath, wherein carries the corresponding new radio bearer identification of the Data Radio Bearer to be migrated in the message.
Above-mentioned each processing step can be applied in the various migration scenes of radio bearer, for example, original from base station
Data Radio Bearer moves to master base station；Alternatively, the original Data Radio Bearer of master base station is moved to from base station；Alternatively, main base
The Data Radio Bearer stood is migrated to behind base station, then by migrating from base station to master base station.Especially for a kind of last situation,
Under the scene that Data Radio Bearer migrates repeatedly, since the information such as key can reuse the problems such as will lead to Key Exposure,
And the technological means of above-mentioned each processing step is used, due to using as Data Radio Bearer distribution to be migrated and master base station
The different new Data Radio Bearer identification technology means with the radio bearer identification from base station the allocated mistake, therefore, from
The multiplexing for fundamentally avoiding the information such as key improves safety when dual link is carried on load bearing migration.
Since in step S702, master base station is that the Data Radio Bearer is assigned with new Data Radio Bearer mark,
And original Data Radio Bearer mark is not used, therefore, user equipment needs to reuse new number after receiving message
According to the corresponding evolved packet system load identification corresponding with the Data Radio Bearer of radio bearer identification, without triggering upper layer
Radio bearer deletion instruction.
In step S704, there are many implementations of above-mentioned notification message, such as can be newly-increased dedicated by one
Message is realized, can also be realized using existing message.
For the ease of distributing new Data Radio Bearer mark, master base station can recorde master base station and use from base station
Data Radio Bearer mark.The record information can be updated by key updating process, remove present wireless bearing
Unused load identification record, such as: master base station and/or be passively or actively from base station carry out key updating when, remove current
Data Radio Bearer identification record that Data Radio Bearer does not use (the i.e. Data Radio Bearer mark that does not use of present wireless bearing
Memorize record).Specifically, following implemented form can be shown as:
When actively initiating key updating, master base station, which can be removed, currently carries unused Data Radio Bearer identification record；When
When not new Data Radio Bearer mark, master base station and key updating process also can be used from base station is not used to remove
Data Radio Bearer identification record, to regain radio bearer identification resource.
Illustrate above-mentioned load identification sweep-out method: if the used Data Radio Bearer of master base station record
It is identified as 1,2,3, but current master base station and only exists two Data Radio Bearer from base station, respectively using mark 2 and 3,
Then by key updating process, the record for the mark 1 not used currently can be removed.
Scheme in the present embodiment can be applied to following scene but not limited to this: master base station is by Data Radio Bearer by leading
Base station is migrated to behind base station, then by migrating back master base station from base station by the Data Radio Bearer, and/or
The key of the source base station of load bearing migration is updated and the key of the target BS of load bearing migration does not update.
Wherein source/target BS of load bearing migration is for Data Radio Bearer to be migrated.For example, such as certain data
Radio bearer has been moved to the base station B from the base station A, then the base station A is exactly the source base station of the load bearing migration, and the base station B is exactly to carry
The target BS of migration.
In the present embodiment, a kind of migration process device of dual link radio bearer is additionally provided, which is applied to master
Base station, for realizing the above method, as shown in figure 8, the device includes:
Distribution module 80, for distributing new Data Radio Bearer mark for Data Radio Bearer to be migrated, wherein should
Used Data Radio Bearer mark is different from master base station and from base station for new Data Radio Bearer mark；
Sending module 82 is connected to distribution module 80, is counted for sending to user equipment for notifying user equipment
According to the message of wireless bearing transferring, wherein carry above-mentioned new radio bearer identification in the message.
Preferably, above-mentioned distribution module 80 is also used to corresponding with Data Radio Bearer in above-mentioned new radio bearer identification
There are when mapping relations, distribute above-mentioned new Data Radio Bearer mark for evolved packet system load identification.
It should be noted that above-mentioned modules can be realized by software or hardware module, it, can for the latter
To show as in the form of following implemented: distribution module 80 is located in first processor, and sending module 82 can be located at second processor
In；Alternatively, distribution module 80 and sending module 82 are respectively positioned in same processor, but not limited to this.
In the present embodiment, a kind of base station is also provided, comprising: the migration process of above-described dual link radio bearer fills
It sets.
In the present embodiment, a kind of moving method of dual link radio bearer is also provided, as shown in figure 9, this method comprises:
Step S902, user equipment, which is received, carries out Data Radio Bearer migration for notifying user equipment from master base station
Message, wherein the message carries the new Data Radio Bearer mark of master base station distribution, the new Data Radio Bearer mark
Know for identifying Data Radio Bearer to be migrated, above-mentioned new Data Radio Bearer identifies with master base station and made from base station
Used Data Radio Bearer mark is different；
Step S904, user equipment identify according to above-mentioned new Data Radio Bearer and migrate Data Radio Bearer to target
Base station.
In a preferred embodiment of the present embodiment, user equipment is identified according to above-mentioned new Data Radio Bearer will
When Data Radio Bearer is migrated to target BS, user equipment needs to make the new Data Radio Bearer of the Data Radio Bearer
It is corresponding to identify evolved packet system load identification corresponding with the Data Radio Bearer, and it is original to delete the Data Radio Bearer
Data Radio Bearer mark.In this process, deleting the original Data Radio Bearer mark of Data Radio Bearer will not trigger
The corresponding evolved packet system carrying of the Data Radio Bearer and its deletion of mark.
A kind of moving apparatus of dual link radio bearer is also provided in the present embodiment, and the device is for realizing above-mentioned side
Case can be applied to user equipment, and as shown in Figure 10, which includes:
Receiving module 102 carries out Data Radio Bearer migration for notifying user equipment from master base station for receiving
Message, wherein the message carries the new Data Radio Bearer mark of master base station distribution, the new Data Radio Bearer mark
Know for identifying Data Radio Bearer to be migrated, above-mentioned new Data Radio Bearer identifies with master base station and made from base station
Used Data Radio Bearer mark is different；
Transferring module 104 migrates Data Radio Bearer to target for identifying according to above-mentioned new Data Radio Bearer
Base station.
Preferably, as shown in figure 11, above-mentioned apparatus can also include: mapping block 106, and the data for establishing new are wireless
The mapping relations of load identification evolved packet system load identification corresponding with Data Radio Bearer simultaneously delete Data Radio Bearer
The mapping relations of original Data Radio Bearer mark and evolved packet system load identification.
In the present embodiment, a kind of user equipment is also provided, comprising: the migration of above-described dual link radio bearer fills
It sets.
Above-described embodiment in order to better understand is described in detail below in conjunction with preferred embodiment.Preferred embodiment below mentions
For a kind of management method of dual link radio bearer, migrated so that the connection of terminal is carried between itself while the base station of connection
When, the problems such as secret reuse occurs is avoided, to guarantee the safety of dual link.The main thought of following embodiment is:
Radio bearer (can be master base station by the second base station is moved to from first base station (can be primary base station or secondary base station)
Or from base station) when, need to distribute new Data Radio Bearer mark for it, and make evolution corresponding with the Data Radio Bearer
Grouping system load identification corresponds to new radio bearer identification again.New radio bearer identification to be different from first base station and
Other load identifications of the allocated mistake on second base station；Further, the first base station and/or second when initiating key updating
Base station, which can remove, currently carries unused load identification record；First base station and the second base when not new radio bearer identification
It stands and key updating process also can be used to remove the load identification not used record, to regain radio bearer identification money
Source.It should be noted that " first " " second " described in above embodiments is only used for distinguishing involved information or entity etc., and
The improper restriction to involved information or entity is not constituted.
Embodiment one
As shown in figure 12, UE keeps dual link with master base station (i.e. MeNB) and from base station (i.e. SeNB), and wherein MeNB wishes
A carrying (its data wireless identification is 1) on this base station is moved on SeNB.
Step S1202, MeNB initiate modification request to SeNB, wherein the A carrying configuration information for needing to migrate is carried, including
For the new Data Radio Bearer mark of its distribution, it is assumed that new Data Radio Bearer is identified as 2.Wherein MeNB needs to guarantee number
It was not used according to radio bearer identification 2.
Step S1204, SeNB indicate to generate modification request response according to MeNB.
Step S1206, MeNB reconfigure order to UE initiation according to modification request response, wherein indicating UE, A is held
Load moves to SeNB, and new Data Radio Bearer mark 2 is assigned with for it.
Step S1208, UE establish connection with SeNB according to the command messages of MeNB and complete the migration for carrying A, while UE
A will be changed and carry the mapping relations that corresponding radio bearer and EPS are carried, delete Data Radio Bearer mark 1, and make to count again
It establishes and maps according to radio bearer identification 2 and the EPS load identification of the carrying.Then UE initiates punching configuration to MeNB and completes message.
Step S1210, MeNB send modification to SeNB and complete message, and informing removal is completed.
Wherein, MeNB also can use the above process, be completed at the same time the migration of a plurality of Data Radio Bearer.
Embodiment two:
As shown in figure 13, UE keeps dual link with master base station (i.e. MeNB) and from base station (i.e. SeNB), wherein the B on SeNB
Carrying is come before being by MeNB migration, and key is KeNB1 and S-KeNB1 respectively on MeNB and SeNB, and B is carried on SeNB
Transmission process in, PDCP COUNT count value inverts, and simultaneously results in the security key change on SeNB, has become S-
KeNB2.But due to other reasons (for example load is excessively high on SeNB), SeNB wish by this base station B carrying (its data without
1) line is identified as to move on MeNB again.
Step S1302, SeNB send modification to MeNB and require message, wherein carrying the B carrying configuration information for needing to migrate.
Step S1304, MeNB are generated to what UE was initiated according to load bearing migration request message and are reconfigured order, wherein carrying
B is carried on the new configuration information on MeNB, is that the Data Radio Bearer that B carrying is redistributed identifies (being set as 2) including MeNB.
Wherein MeNB needs to guarantee the used Data Radio Bearer mark of new radio bearer identification 2 and MeNB and SeNB not
Together.
Step S1306, UE complete to carry B into the migration to MeNB according to the command messages of MeNB, while UE change B carrying
The mapping relations of corresponding radio bearer and EPS carrying, delete radio bearer identification 1, and make radio bearer identification 2 again and be somebody's turn to do
The EPS load identification of carrying establishes mapping.Then UE is reconfigured to MeNB initiation and is completed message.
Step S1308, MeNB send modification confirmation message to SeNB, and informing removal is completed.
Further, MeNB can actively judge that B is carried on whether the key on SeNB updates in step S1304, such as
Key S-KeNB1 on fruit SeNB is updated really, and local key and initial MeNB migrate B be carried to it is close when SeNB
Key KeNB1 is identical not to be changed, then MeNB, which can choose, does not distribute new radio bearer identification for B carrying.
Further, MeNB and SeNB also can use the migration that the process is completed at the same time a plurality of Data Radio Bearer.
Embodiment three:
As shown in figure 14, UE and master base station (i.e. MeNB) and keep dual link from base station (i.e. SeNB), wherein SeNB because
Load or other reasons, it is desirable to exit connection (being deleted), and (it is counted by all Data Radio Bearer on the base station SeNB
It is 1) to move on MeNB according to wireless identification.
Step S1402, SeNB send release request message to MeNB, need all data migrated wirelessly to hold wherein carrying
Carry configuration information.
Step S1404, MeNB is generated to what UE was initiated and is reconfigured order, wherein carrying all or part of data on SeNB
New configuration information of the radio bearer on MeNB is that all or part of Data Radio Bearer are redistributed on SeNB including MeNB
Data Radio Bearer mark.Wherein MeNB needs to guarantee that newly assigned Data Radio Bearer mark had been used with MeNB and SeNB
Data Radio Bearer mark it is different.
Step S1406, UE complete migration of the Data Radio Bearer of response to MeNB according to the command messages of MeNB, and delete
Except the wireless connection with SeNB.The B of UE change simultaneously carries the mapping relations of corresponding radio bearer and EPS carrying, makes newly to distribute
Data Radio Bearer mark and the foundation mapping of the EPS load identification of corresponding carrying.Then UE reconfigures completion to MeNB initiation
Message.
Step S1408, MeNB send release confirmation message to SeNB.
Further, in step 1404, if the current not extra radio bearer identification of MeNB judgement can be with
Distribution, then MeNB needs to initiate the key updating process of MeNB.Wherein the renewal process is identical as existing key updating process, this
Place repeats no more.
In conclusion the embodiment of the present invention realize it is following the utility model has the advantages that using above-mentioned skill provided in an embodiment of the present invention
Art scheme, it is ensured that provide enough safeguard protections for the multi-connection carrying of terminal, and can prevent from connecting in the business of terminal
It connects when being migrated between being carried on base station, causes the hidden danger of key secure context.Meanwhile heretofore described management method is abundant
It has been multiplexed existing connection management mechanism, ensure that the backwards compatibility of network and terminal on software and hardware to a certain extent.
In another embodiment, a kind of software is additionally provided, the software is for executing above-described embodiment and preferred reality
Apply technical solution described in mode.
In another embodiment, a kind of storage medium is additionally provided, above-mentioned software is stored in the storage medium, it should
Storage medium includes but is not limited to: CD, floppy disk, hard disk, scratch pad memory etc..
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of emigration processing method of dual link radio bearer characterized by comprising
Master base station is that Data Radio Bearer to be migrated distributes new Data Radio Bearer mark, wherein the new data without
Used Data Radio Bearer mark is different from the master base station and from base station for line load identification；
The master base station sends the message that Data Radio Bearer migration is carried out for notifying user equipment to user equipment, wherein
The new radio bearer identification is carried in the message.
2. the method according to claim 1, wherein the new radio bearer identification is wirelessly held with the data
Carrying corresponding evolved packet system load identification, there are mapping relations.
3. the method according to claim 1, wherein master base station is that Data Radio Bearer distribution to be migrated is new
Before Data Radio Bearer mark, the method also includes:
In the master base station and/or the progress key updating from base station, the number that current data radio bearer does not use is removed
It is recorded according to radio bearer identification.
4. according to the method in any one of claims 1 to 3, which is characterized in that master base station distributes new data and wirelessly holds
Before carrying mark, the method also includes:
The master base station is migrated the Data Radio Bearer to behind base station by master base station, then by from base station by the data without
The key that line load bearing migration returns the source base station of master base station and/or load bearing migration is updated and the target BS of load bearing migration
Key do not update.
5. a kind of moving method of dual link radio bearer characterized by comprising
User equipment receives the message that Data Radio Bearer migration is carried out for notifying user equipment from master base station, wherein
The message carries the new Data Radio Bearer mark of the master base station distribution, the new Data Radio Bearer mark
For identifying Data Radio Bearer to be migrated, the new Data Radio Bearer is identified with the master base station and from base station
Used Data Radio Bearer mark is different；
The user equipment identifies according to the new Data Radio Bearer and migrates the Data Radio Bearer to target BS.
6. according to the method described in claim 5, it is characterized in that, the user equipment is according to the new Data Radio Bearer
When mark migrates the Data Radio Bearer to target BS, the method also includes:
The user equipment makes the new Data Radio Bearer identify evolution grouping corresponding with Data Radio Bearer system
Load identification of uniting is corresponding, and deletes the original Data Radio Bearer mark of the Data Radio Bearer.
7. a kind of migration process device of dual link radio bearer is applied to master base station characterized by comprising
Distribution module, for distributing new Data Radio Bearer mark for Data Radio Bearer to be migrated, wherein described new
Used Data Radio Bearer mark is different from the master base station and from base station for Data Radio Bearer mark；
Sending module, for sending the message for carrying out Data Radio Bearer migration for notifying user equipment to user equipment,
In, the new radio bearer identification is carried in the message.
8. device according to claim 7, which is characterized in that the distribution module is also used in the new radio bearer
Evolved packet system load identification corresponding with the Data Radio Bearer is identified there are when mapping relations, distributes the new number
According to radio bearer identification.
9. a kind of moving apparatus of dual link radio bearer characterized by comprising
Receiving module, for receiving the message for carrying out Data Radio Bearer migration for notifying user equipment from master base station,
Wherein, the message carries the new Data Radio Bearer mark of the master base station distribution, the new Data Radio Bearer mark
Know for identifying Data Radio Bearer to be migrated, the new Data Radio Bearer is identified with the master base station and from base station
It is identified through used Data Radio Bearer different；
Transferring module migrates the Data Radio Bearer to target base for identifying according to the new Data Radio Bearer
It stands.
10. device according to claim 9, which is characterized in that further include:
Mapping block, for making the new Data Radio Bearer identify evolution grouping corresponding with Data Radio Bearer system
Load identification of uniting is corresponding, and deletes the original Data Radio Bearer mark of the Data Radio Bearer.
11. a kind of base station characterized by comprising the migration process of dual link radio bearer described in claim 7 or 8 fills
It sets.
12. a kind of user equipment characterized by comprising the migration of dual link radio bearer described in claim 9 or 10 fills
It sets.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223153.2A CN104219722B (en) | 2014-05-23 | 2014-05-23 | Migration process, moving method and the device of dual link radio bearer |
| PCT/CN2014/087718 WO2015176462A1 (en) | 2014-05-23 | 2014-09-28 | Dual-connection radio bearer migration processing and migration methods and devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223153.2A CN104219722B (en) | 2014-05-23 | 2014-05-23 | Migration process, moving method and the device of dual link radio bearer |
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| CN104219722B true CN104219722B (en) | 2019-07-23 |
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| WO2015176462A1 (en) | 2015-11-26 |
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