CN104796948A - Method of modifying radio bearer in dual-connection network and system - Google Patents
Method of modifying radio bearer in dual-connection network and system Download PDFInfo
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- CN104796948A CN104796948A CN201410028500.6A CN201410028500A CN104796948A CN 104796948 A CN104796948 A CN 104796948A CN 201410028500 A CN201410028500 A CN 201410028500A CN 104796948 A CN104796948 A CN 104796948A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
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Abstract
The invention discloses a method of modifying a radio bearer in a dual-connection network and a system, which relates to the technical field of radio communication. The problem of modifying related parameters of QoS of a DRB (Data Radio Bearer) between a SeNB and UE in the dual-connection network by adopting a 3C frame can be solved. In certain trigger conditions, a MeNB can send a bearer modifying instruction to the SeNB to instruct the SeNB to complete DRB modifying with the UE, the realization method is simple, advantages of the dual-connection technology are used thoroughly, and normal service transmission of the user can be ensured.
Description
Technical field
The present invention relates to wireless communication technology field, the radio bearer modification method and system particularly in a kind of dual link network.
Background technology
Dual link network is the study hotspot of Current wireless communication technology, and the network architecture as shown in Figure 1.In such networks, user terminal (UE) keeps eating dishes without rice or wine to be connected with between macro base station (MeNB) and micro-base station (SeNB) simultaneously, this means that macro base station and micro-base station can simultaneously for UE provide service.By using dual link communication, when UE carries out moving in macrocell inside and enters or leave a small-cell, handoff procedure can not be performed, and just adopt resource reconfiguration process to come to configure or release small-cell resource for UE by macro base station, the relevant control process that now core net performs will greatly reduce, thus reduce core network signalling load, in addition, owing to not performing handoff procedure, the mobility performance of network will have larger improvement.Can see, introduce the signaling traffic load that dual link communication can reduce network, the mobility performance of network can be improved in addition.
In dual link network, be currently suggested the basis of two kinds of user face frameworks as future studies: 1A and 3C framework, with reference to Fig. 2 a) and 2b), wherein, RLC is radio link control entity, and DTCH is Dedicated Traffic Channel, and MAC is medium education.Under 3C framework, support to shunt EPS carrying, namely MeNB and SeNB can set up Data Radio Bearer (Data Radio Bearer, DRB) respectively and transmit same evolved packet system (Evolved Packet System, EPS) and carry with UE.
In existing LTE system, the amendment of carrying is divided into two kinds of situations: one is the renewal of bearer quality of service (QoS) relevant parameter, and another kind is the renewal carrying non-qos parameter.Two kinds of situation processes are slightly distinguished.
Process for amendment bearer QoS parameters can be triggered by packet data network gateway (PDNGateway, PGW) or home subscriber server (Home Subscriber Server, HSS) triggers.No matter idiographic flow as shown in Figure 3, when the situation of bearer QoS parameters amendment occurs, is that PGW or HSS triggers, all can sends bearing modification request by Mobility Management Entity (MobilityManagement Entity, MME) to base station (eNB).ENB revises the QoS configuration of corresponding radio bearer after receiving this message, and sends RRC connection reallocation message to UE, and instruction UE carries out the QoS configuration modification of corresponding radio bearer.UE indicates the QoS configuration of amendment carrying according to eNB, and completes message to eNB feedback RRC connection reprovision.ENB receives after UE feeds back the acknowledge message that completes of bearing modification, will feed back bearing modification response confirmation bearing modification complete to MME.
In the dual link network adopting 3C framework, support to shunt EPS carrying, the data namely carried for same EPS can be set up DRB respectively with MeNB and SeNB and transmit.Under 3C framework, between SeNB and MME, there is not S1 interface.When the situation of amendment bearer QoS parameters occurs, bearing modification request cannot be sent by MME directly to SeNB according to existing LTE system bearing modification process, the amendment of bearer QoS parameters cannot be carried out SeNB.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is: how in the dual link network of 3C framework, realizes the bearer QoS parameters amendment between SeNB and UE.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of radio bearer modification method in dual link network, said method comprising the steps of:
S1: macro base station receives the bearing modification request sent by Mobility Management Entity MME, send bearing modification instruction to micro-base station, described bearing modification instruction comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
S2: carrying configuration modification is carried out according to described QoS configuration information after receiving the instruction of described bearing modification in described micro-base station, after having revised, feeds back the first bearing modification response to described macro base station;
S3: described macro base station sends radio resource control RRC to user terminal and connects reallocation message, and described RRC connects reallocation message and comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
S4: described user terminal carries out carrying configuration modification according to described QoS configuration information after receiving described RRC connection reallocation message, after having revised, sends RRC connection reprovision to described macro base station and completes message;
S5: described macro base station receives described RRC and connects after reprovision completes message, sends the second bearing modification response, revise with the bearer QoS parameters realized between micro-base station and user terminal to described micro-base station.
Wherein, in step S1, the EPS bearer QoS parameters in described bearing modification request first maps after receiving the bearing modification request sent by Mobility Management Entity MME by macro base station, to obtain radio bearer qos parameter, described QoS configuration information comprises: described radio bearer qos parameter.
Wherein, in step S1, after macro base station receives the bearing modification request sent by Mobility Management Entity MME, judge that the EPS in described bearing modification request carries the DRB whether having corresponding micro-base station, if having, then send bearing modification instruction to micro-base station.
Wherein, in step S1, described macro base station stores information according to this locality and judges that the EPS in described bearing modification request carries the DRB whether having corresponding micro-base station.
Wherein, described RRC connection reallocation message also comprises: micro-Base Station Identification.
The invention also discloses the radio bearer modification system in a kind of dual link network, described system comprises: macro base station, micro-base station and user terminal,
Described macro base station is for receiving the bearing modification request sent by Mobility Management Entity MME, send bearing modification instruction to micro-base station, described bearing modification instruction comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
Carrying configuration modification is carried out according to described QoS configuration information after being used for receiving the instruction of described bearing modification in described micro-base station, after having revised, feeds back the first bearing modification response to described macro base station;
Described macro base station also connects reallocation message for sending radio resource control RRC to user terminal, and described RRC connects reallocation message and comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
Described user terminal carries out carrying configuration modification according to described QoS configuration information after being used for receiving described RRC connection reallocation message, after having revised, sends RRC connection reprovision complete message to described macro base station;
Described macro base station also connects after reprovision completes message for receiving described RRC, sends the second bearing modification response, revise with the bearer QoS parameters realized between micro-base station and UE to described micro-base station.
Wherein, described macro base station is also for after receiving the bearing modification request that sent by Mobility Management Entity MME, first the EPS bearer QoS parameters in described bearing modification request mapped, to obtain radio bearer qos parameter, described QoS configuration information comprises: described radio bearer qos parameter.
Wherein, described macro base station is also for after receiving the bearing modification request that sent by Mobility Management Entity MME, and whether the EPS carrying judging in described bearing modification request has the DRB of corresponding micro-base station, if having, then sends bearing modification instruction to micro-base station.
Wherein, whether described macro base station has the DRB of corresponding micro-base station according to the EPS carrying that this locality storage information judges in described bearing modification request.
Wherein, described RRC connection reallocation message also comprises: micro-Base Station Identification.
(3) beneficial effect
The invention solves in the dual link network adopting 3C framework, the problem of DRBQoS relevant parameter amendment between SeNB and UE.When there is parameter change, MeNB can send bearing modification instruction to SeNB, and instruction SeNB completes and the amendment of DRB between UE, and implementation method is simple, takes full advantage of the advantage of dual link technology, ensure that the regular traffic transmission of user.
Accompanying drawing explanation
Fig. 1 is the framework schematic diagram of dual link network;
Fig. 2 is a) user face 1A configuration diagram in dual link network;
Fig. 2 b) be user face 3C configuration diagram in dual link network;
Fig. 3 is in prior art, the flow chart of the amendment bearer QoS parameters that PGW/HSS triggers;
Fig. 4 is the FB(flow block) of the radio bearer modification method in the dual link network of one embodiment of the present invention;
Fig. 5 is the flow chart of the radio bearer modification method in the dual link network of an embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Fig. 4 is the FB(flow block) of the radio bearer modification method in the dual link network of one embodiment of the present invention; With reference to Fig. 4, said method comprising the steps of:
S1: macro base station receives the bearing modification request sent by Mobility Management Entity MME, send bearing modification instruction to micro-base station, described bearing modification instruction comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
S2: carrying configuration modification is carried out according to described QoS configuration information after receiving the instruction of described bearing modification in described micro-base station, after having revised, feeds back the first bearing modification response to described macro base station;
S3: described macro base station sends radio resource control RRC to user terminal and connects reallocation message, and described RRC connects reallocation message and comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
S4: described user terminal carries out carrying configuration modification according to described QoS configuration information after receiving described RRC connection reallocation message, after having revised, sends RRC connection reprovision to described macro base station and completes message;
S5: described macro base station receives described RRC and connects after reprovision completes message, sends the second bearing modification response, revise with the bearer QoS parameters realized between micro-base station and UE to described micro-base station.
QoS is carried owing to only having EPS in core-network side, radio bearer QoS directly cannot be sent to macro base station, for the ease of realizing the amendment of radio bearer QoS, preferably, in step S1, the EPS bearer QoS parameters in described bearing modification request first maps after receiving the bearing modification request sent by Mobility Management Entity MME by macro base station, to obtain radio bearer qos parameter, described QoS configuration information comprises: described radio bearer qos parameter.
For ease of confirming the object of bearing modification request, preferably, in step S1, after macro base station receives the bearing modification request sent by Mobility Management Entity MME, judge that the EPS in described bearing modification request carries the DRB whether having corresponding micro-base station, if have, then send bearing modification instruction to micro-base station.
For improving the efficiency confirming object, preferably, in step S1, described macro base station stores information according to this locality and judges that the EPS in described bearing modification request carries the DRB whether having corresponding micro-base station.
Due to for user terminal, the information such as all instructions, message all transmitted by macro base station, and in order to distinguish which is the relation in order to adjust between micro-base station and user terminal, preferably, described RRC connects reallocation message and also comprises: micro-Base Station Identification.
In present embodiment, step S1 ~ S2, order is not first had with step S3 ~ 5, first can carry out step S3 ~ S5, perform step S1 ~ S2 again, only have macro base station to receive the first bearing modification response and after micro-base station feedback second bearing modification response, just calculate the DRB achieved between micro-base station and user terminal and revise.
In present embodiment, the information such as the message between micro-base station and macro base station, response, instruction are all by Xn interface or X2 interface transmission.
Embodiment
The present embodiment is for the scene of amendment bearer QoS parameters, and as shown in Figure 5, described method comprises:
1, when MeNB receives the bearing modification request sent by MME;
First MeNB judges that the EPS in described bearing modification request carries the DRB whether having corresponding SeNB.
If 2 these EPS carry the DRB of corresponding SeNB, then the EPS in described bearing modification request is carried QoS to map, to obtain radio bearer QoS, and send bearing modification instruction to SeNB, described bearing modification instruction comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information, described QoS configuration information comprises: described radio bearer QoS, meanwhile, MeNB carries QoS configuration information according to the local SeNB DRB stored of instruction amendment of described bearing modification request.
3, SeNB receives the bearing modification instruction that MeNB sends, and carries out according to described QoS configuration information the amendment carrying relevant parameter, has revised backward MeNB and has fed back the first bearing modification response.
4, MeNB sends RRC connection reallocation message to UE, and described RRC connects reallocation message and comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information.
5, UE carries out carrying configuration modification according to described QoS configuration information, after having revised, sends RRC connection reprovision complete message to MeNB.
6, MeNB connects after reprovision completes message receiving RRC, sends the second bearing modification response, revise with the bearer QoS parameters realized between micro-base station and UE to SeNB.
7, MeNB sends the 3rd bearing modification response to MME.
Step 8 ~ 9 are substantially identical with the step of prior art, so repeat no more.
The invention also discloses the radio bearer modification system in a kind of dual link network, described system comprises: macro base station, micro-base station and user terminal,
Described macro base station is for receiving the bearing modification request sent by Mobility Management Entity MME, send bearing modification instruction to micro-base station, described bearing modification instruction comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
Carrying configuration modification is carried out according to described QoS configuration information after being used for receiving the instruction of described bearing modification in described micro-base station, after having revised, feeds back the first bearing modification response to described macro base station;
Described macro base station also connects reallocation message for sending radio resource control RRC to user terminal, and described RRC connects reallocation message and comprises: the DRB mark of described evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
Described user terminal carries out carrying configuration modification according to described QoS configuration information after being used for receiving described RRC connection reallocation message, after having revised, sends RRC connection reprovision complete message to described macro base station;
Described macro base station also connects after reprovision completes message for receiving described RRC, sends the second bearing modification response, revise with the bearer QoS parameters realized between micro-base station and UE to described micro-base station.
Preferably, described macro base station is also for after receiving the bearing modification request that sent by Mobility Management Entity MME, first the EPS in described bearing modification request is carried QoS to map, to obtain radio bearer QoS, described QoS configuration information comprises: radio bearer QoS.
Preferably, described macro base station is also for after receiving the bearing modification request that sent by Mobility Management Entity MME, and whether the EPS carrying judging in described bearing modification request has the DRB of corresponding micro-base station, if having, then sends bearing modification instruction to micro-base station.
Preferably, whether described macro base station has the DRB of corresponding micro-base station according to the EPS carrying that this locality storage information judges in described bearing modification request.
Preferably, described RRC connection reallocation message also comprises: micro-Base Station Identification.
Above execution mode is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. the radio bearer modification method in dual link network, is characterized in that, said method comprising the steps of:
S1: macro base station receives the bearing modification request sent by Mobility Management Entity MME, send bearing modification instruction to micro-base station, described bearing modification instruction comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
S2: carrying configuration modification is carried out according to described QoS configuration information after receiving the instruction of described bearing modification in described micro-base station, after having revised, feeds back the first bearing modification response to described macro base station;
S3: described macro base station sends radio resource control RRC to user terminal and connects reallocation message, and described RRC connects reallocation message and comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
S4: described user terminal carries out carrying configuration modification according to described QoS configuration information after receiving described RRC connection reallocation message, after having revised, sends RRC connection reprovision to described macro base station and completes message;
S5: described macro base station receives described RRC and connects after reprovision completes message, sends the second bearing modification response, revise with the bearer QoS parameters realized between micro-base station and user terminal to described micro-base station.
2. the method for claim 1, it is characterized in that, in step S1, after macro base station receives the bearing modification request sent by Mobility Management Entity MME, first the EPS bearer QoS parameters in described bearing modification request is mapped, to obtain radio bearer qos parameter, described QoS configuration information comprises: described radio bearer qos parameter.
3. method as claimed in claim 2, it is characterized in that, in step S1, after macro base station receives the bearing modification request sent by Mobility Management Entity MME, judge that the EPS in described bearing modification request carries the DRB whether having corresponding micro-base station, if have, then send bearing modification instruction to micro-base station.
4. method as claimed in claim 3, is characterized in that, in step S1, described macro base station stores information according to this locality and judges that the EPS in described bearing modification request carries the DRB whether having corresponding micro-base station.
5. the method according to any one of Claims 1 to 4, is characterized in that, described RRC connects reallocation message and also comprises: micro-Base Station Identification.
6. the radio bearer modification system in dual link network, is characterized in that, described system comprises: macro base station, micro-base station and user terminal,
Described macro base station is for receiving the bearing modification request sent by Mobility Management Entity MME, send bearing modification instruction to micro-base station, described bearing modification instruction comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
Carrying configuration modification is carried out according to described QoS configuration information after being used for receiving the instruction of described bearing modification in described micro-base station, after having revised, feeds back the first bearing modification response to described macro base station;
Described macro base station also connects reallocation message for sending radio resource control RRC to user terminal, and described RRC connects reallocation message and comprises: the DRB mark of evolved packet system EPS bearing identification to be modified and correspondence, QoS configuration information;
Described user terminal carries out carrying configuration modification according to described QoS configuration information after being used for receiving described RRC connection reallocation message, after having revised, sends RRC connection reprovision complete message to described macro base station;
Described macro base station also connects after reprovision completes message for receiving described RRC, sends the second bearing modification response, revise with the bearer QoS parameters realized between micro-base station and user terminal to described micro-base station.
7. system as claimed in claim 6, it is characterized in that, described macro base station is also for after receiving the bearing modification request that sent by Mobility Management Entity MME, first the EPS bearer QoS parameters in described bearing modification request is mapped, to obtain radio bearer qos parameter, described QoS configuration information comprises: described radio bearer qos parameter.
8. system as claimed in claim 7, it is characterized in that, described macro base station is also for after receiving the bearing modification request that sent by Mobility Management Entity MME, judge that the EPS in described bearing modification request carries the DRB whether having corresponding micro-base station, if have, then send bearing modification instruction to micro-base station.
9. system as claimed in claim 8, is characterized in that, described macro base station stores information according to this locality and judges that the EPS in described bearing modification request carries the DRB whether having corresponding micro-base station.
10. the system according to any one of claim 6 ~ 9, is characterized in that, described RRC connects reallocation message and also comprises: micro-Base Station Identification.
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| CN108401540B (en) * | 2017-11-29 | 2021-11-23 | 北京小米移动软件有限公司 | Management method and device of data radio bearer identification pool |
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