CN104066199A - Method carrying out data transmission through small cell and macro evolution base station - Google Patents

Method carrying out data transmission through small cell and macro evolution base station Download PDF

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Publication number
CN104066199A
CN104066199A CN201310086592.9A CN201310086592A CN104066199A CN 104066199 A CN104066199 A CN 104066199A CN 201310086592 A CN201310086592 A CN 201310086592A CN 104066199 A CN104066199 A CN 104066199A
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small cell
enb
sends
grand enb
message
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CN104066199B (en
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江小威
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China Mobile Communications Group Co Ltd
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China Mobile Communications Group Co Ltd
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Priority to CN201310086592.9A priority Critical patent/CN104066199B/en
Priority to PCT/CN2014/073689 priority patent/WO2014146578A1/en
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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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method carrying out data transmission through a small cell and a macro evolution base station. The method comprises the steps that macro eNB receives a joint connection establishment request message sent by UE, and sends a joint connection establishment message to the UE; when the NAS signaling of a service request, which is sent by the UE, is received, the NAS signaling is transparently transmitted to MME, and an initial context establishment request message sent by the MME is received; a wireless bearing is mapped to a small cell; a connection reconfiguration command is sent to the UE; the command carries the wireless configuration of the macro eNB side and the wireless configuration of the small cell side, so that the UE completes the wireless configuration of the UE according to the wireless configuration of the macro eNB side and the wireless configuration of the small cell side, and realizes downlink synchronization with the small cell eNB; when the macro eNB receives business data sent by the small cell eNB from the UE, the business data is forwarded to SGW; and when the macro eNB receives the business data sent by the SGW, the business data are sent to the UE through the small cell eNB. According to the invention, data transmission is realized through the small cell.

Description

By small-cell, transmit method and the grand evolution base station of data
Technical field
The application relates to wireless technical field, particularly by method and the grand evolution base station (eNB, evolved NodeBase) of small-cell (small cell) transmission data.
Background technology
It is Long Term Evolution (LTE that focus covers, Long Term Evolution) emphasis of considering, business due to 90% occurs in indoor and hot zones, therefore for solving focus, cover, provide the small cell of two-forty access to be suggested, and at third generation partner plan (3GPP, 3th Generation PartnerProject) Radio Access Network (RAN, Radio Access Network) plenary session project verification, most operators and manufacturer pay special attention to this and play an active part in.The major significance that Small cell strengthens is its Scaledeployment, because the small cell number under a grand eNB may be very large, as: have tens, data distribution, interference problem, mobility problem, power problems, Cost Problems therefore how effectively to process between grand eNB and small cell will be the emphasis of studying.The difference that the focuses such as Small cell and current picocell (Picocell) cover is that it likely adopts brand-new technology, the carrier aggregation that comprises (inter-eNB) between evolution base station, the redesign of downlink synchronous signal, part small cell eNB controls function and is transferred to grand eNB, etc.
Discussion about small cell at present just just starts, and main direction of studying is to provide the control function of grand eNB to small cell, comprises business, mobility etc.Possible scheme can be both that the carrier aggregation based on inter-eNB realizes, and can be also to realize by the part control function of small cell is moved to grand eNB.But concrete scheme realizes and all also not providing at present.
Summary of the invention
The application provides by method and grand eNB, small cell eNB, UE and the LTE system of small cell transmission data, to realize by small cell transmission data.
A kind of by the method for small-cell small cell transmission data, be applied to: between small cell evolution base station eNB and gateway SGW, there is no interface in the user plane, in the Long Term Evolution LTE system that user's face anchor point of small cell eNB is grand eNB, the method comprises:
Request message is set up in the connection of combining that grand eNB reception user equipment (UE) is sent, and sends to combine to connect set up message to UE; When the service request that receives UE and send, this service request is Non-Access Stratum NAS signaling, this NAS signaling is passed through to Mobility Management Entity MME, the initial context that reception MME sends is set up request message, radio bearer is mapped to small cell, to UE, send and connect reprovision order, the radio configuration of grand eNB side and the radio configuration of small cell side are carried in this order, so that: UE is according to the radio configuration of the radio configuration of grand eNB side and small cell side, complete the radio configuration of this UE, and realize down-going synchronous with small celleNB;
When grand eNB receives the business datum from UE that small cell eNB sends, this business datum is transmitted to SGW; When grand eNB receives the business datum that SGW sends, this business datum is issued to UE by small cell eNB.
Described grand eNB receives that user equipment (UE) sends combines to connect before setting up request message and further comprises:
The mobile management message that grand eNB initiates UE is transmitted to MME.
Described combine to connect set up the signal quality that request message carries the small cell that UE measures.
Described grand eNB receives that user equipment (UE) sends combine connect set up request message after, to UE, send to combine to connect before setting up message and further comprise:
Grand eNB judges whether to set up and being connected of small cell eNB simultaneously, if, to small celleNB initiation, carry the connection of UE sign and set up request message, when receiving the connection that small cell eNB returns, set up after acknowledge message, carry out described to UE, send to combine connect the action of setting up message; Otherwise, directly carry out described to UE, send to combine connect the action of setting up message.
Described method further comprises:
Grand eNB receives the NAS dedicated bearer generation request message that MME sends, this message is carried the NAS dedicated bearer activation request message that need to issue UE, this message is carried the QoS information of business simultaneously, according to the QoS information of business, determining need to be by service distributing to small cell, S1 carrying is mapped on the radio bearer of small cell, then to UE, send and connect reprovision order, radio configuration and the NAS dedicated bearer activation request message of UE is carried in this order, the connection reprovision that reception UE returns completes order, to MME, return to NAS dedicated bearer and generate response message.
Described method further comprises:
Grand eNB receives the RRC signaling that UE sends, and this RRC signaling is passed through to small cell eNB; Grand eNB receives the RRC signaling that small cell eNB sends, and this RRC signaling is passed through to UE.
A method by small cell transmission data, is applied to: between small cell eNB and SGW, there is no interface in the user plane, in the LTE system that user's face anchor point of small cell eNB is grand eNB, the method comprises:
Small cell eNB receives the business datum that UE sends, and this business datum is issued to SGW by grand eNB;
Small cell eNB receives the business datum from SGW that grand eNB sends, and this business datum is transmitted to UE.
Described method further comprises:
Small cell eNB receives the RRC signaling from UE that grand eNB sends;
In the time will sending RRC signaling to UE, by grand eNB, send this RRC signaling to UE.
Described method further comprises:
Small cell eNB receives the connection of carrying UE sign that grand eNB sends and sets up request message, returns to connect set up acknowledge message to grand eNB.
A method by small cell transmission data, is applied to: between small cell eNB and SGW, there is no interface in the user plane, in the LTE system that user's face anchor point of small cell eNB is grand eNB, the method comprises:
When UE has business datum will send or receive beep-page message, to grand eNB, initiate to combine to connect and set up request message, so that: grand eNB initiates to connect to small cell eNB and sets up request message; UE receives that grand eNB returns combines to connect and sets up message, to grand eNB, sends service request, and described service request is NAS signaling, so that: grand eNB passes through MME by this service request;
UE receives the connection reprovision order that grand eNB sends, the radio configuration of the radio configuration of the grand eNB side of carrying according to this order and small cell side, complete the radio configuration of self, realize down-going synchronous and access at random with small cell eNB, start to send business datum by small cell eNB, the order of described connection reprovision is: grand eNB receives the initial context that MME sends and sets up request message, issues UE's after radio bearer is mapped to small cell.
Described UE sends business datum by small cell eNB and comprises:
When UE will send business datum, this business datum is sent to small cell eNB, so that: small cell eNB is transmitted to SGW by this business datum by grand eNB;
Or UE receives the business datum that small cell eNB sends, this business datum is: SGW is transmitted to small cell eNB's by grand eNB.
Described method further comprises:
UE receives the connection reprovision order that grand eNB sends, radio configuration, the NAS dedicated bearer activation request message of UE is carried in this order, according to this order, complete the radio configuration of self, to grand eNB, send NAS dedicated bearer activation confirmation message, realize down-going synchronous and access at random with small cell eNB, start the service data transmission by small cell eNB.
A grand eNB, this grand eNB is user's face anchor point of a plurality of small cell eNB, and there is no interface in the user plane between small cell and SGW, this eNB comprises:
Combine to connect and set up module: request message is set up in the connection of combining that reception UE sends, to UE, send to combine to connect and set up message; When the service request that receives UE and send, described service request is NAS signaling, this NAS signaling is passed through to MME, the initial context that reception MME sends is set up request message, radio bearer is mapped to small cell, to UE, send and connect reprovision order, the radio configuration of grand eNB side and the radio configuration of small cell side are carried in this order, so that: UE is according to the radio configuration of the radio configuration of grand eNB side and smallcell side, complete the radio configuration of this UE, and realize down-going synchronous with small cell eNB;
Data transmission module: when receiving the business datum from UE that small cell eNB sends, this business datum is transmitted to SGW; When receiving the business datum that SGW sends, this business datum is issued to UE by small cell eNB.
Described combine to connect set up module and be further used for,
After connecting combining of receiving that UE sends and setting up request message, first judge whether to set up and being connected of small cell eNB simultaneously, if, to small cell eNB, initiate to connect and set up request message, when receiving the connection that small cell eNB returns, set up after acknowledge message, carry out described to UE, send to combine connect the action of setting up message; Otherwise, directly carry out described to UE, send to combine connect the action of setting up message.
Described combine to connect set up module and be further used for, receive the NAS dedicated bearer generation request message that MME sends, this message is carried the NAS dedicated bearer activation request message that need to issue UE, this message is carried the QoS information of business simultaneously, according to the QoS information of business, determining need to be by service distributing to small cell, S1 carrying is mapped on the radio bearer of small cell, then to UE, send and connect reprovision order, radio configuration and the NAS dedicated bearer activation request message of UE is carried in this order, the connection reprovision that reception UE returns completes order, to MME, return to NAS dedicated bearer and generate response message.
Described combine to connect set up module and be further used for, receive the RRC signaling that UE sends, this RRC signaling is passed through to small cell eNB; Receive the RRC signaling that small cell eNB sends, this RRC signaling is passed through to UE.
A small cell eNB, user's face anchor point of small cell eNB is grand eNB, between this small cell eNB and SGW, there is no interface in the user plane, this small cell eNB comprises:
Data transmission module: when receiving the business datum that UE sends, this business datum is issued to SGW by grand eNB; When receiving the business datum from SGW that grand eNB sends, this business datum is transmitted to UE.
Described small cell eNB further comprises:
RRC signalling module: receive the RRC signaling from UE that grand eNB sends; In the time will sending RRC signaling to UE, by grand eNB, send this RRC signaling to UE.
It is characterized in that, described small cell eNB further comprises:
Connect and to set up module: when receiving the connection of carrying UE sign that grand eNB sends and set up request message, to grand eNB, return to connect and set up acknowledge message.
A UE, is applied to: between small cell eNB and SGW, there is no interface in the user plane, in the LTE system that user's face anchor point of small celleNB is grand eNB, this UE comprises:
Signalling exchange module: when having business datum will send or receive beep-page message, to grand eNB, initiate to combine to connect and set up request message, so that: grand eNB initiates to connect to small cell eNB and sets up request message; Receive that grand eNB returns combine to connect set up message, to grand eNB, send service request, described service request is NAS signaling, so that: grand eNB passes through MME by this service request; Receive the connection reprovision order that grand eNB sends, the radio configuration of the grand eNB side of carrying according to this order and the radio configuration of smallcell side, complete the radio configuration of this UE, realize down-going synchronous and access at random with small cell eNB, the order of described connection reprovision is: grand eNB receives the initial context that MME sends and sets up request message, issues UE's after radio bearer is mapped to small cell;
Data interaction module: send business datum by small cell eNB.
Described data interaction module is further used for, and in the time will sending business datum, this business datum is sent to small cell eNB, so that: small cell eNB is transmitted to SGW by this business datum by grand eNB; Or, receiving the business datum that small cell eNB sends, this business datum is: SGW is transmitted to small cell eNB's by grand eNB.
Described Signalling exchange module is further used for, receive the connection reprovision order that grand eNB sends, radio configuration, the NAS dedicated bearer activation request message of UE is carried in this order, according to this order, complete the radio configuration of this UE, to grand eNB, send NAS dedicated bearer activation confirmation message, realize down-going synchronous and access at random with small cell eNB.
A LTE system, comprising: grand eNB, small cell eNB, and grand eNB is user's face anchor point of small celleNB, and there is no interface in the user plane between small cell and SGW, wherein:
Grand eNB: request message is set up in the connection of combining that reception UE sends, sends to combine to connect to UE and sets up message; When the NAS signaling that receives UE and send: during service request, this NAS signaling is passed through to MME, the initial context that reception MME sends is set up request message, radio bearer is mapped to smallcell, to UE, send and connect reprovision order, the radio configuration of grand eNB side and the radio configuration of small cell side are carried in this order, so that: UE is according to the radio configuration of the radio configuration of grand eNB side and small cell side, complete the radio configuration of this UE, and realize down-going synchronous with small cell eNB; When receiving the business datum from UE that small celleNB sends, this business datum is transmitted to SGW; When receiving the business datum that SGW sends, this business datum is issued to UE by small cell eNB;
Small cell eNB: when receiving the business datum that UE sends, this business datum is issued to SGW by grand eNB; When receiving the business datum from SGW that grand eNB sends, this business datum is transmitted to UE.
Described grand eNB is further used for, after connecting combining of receiving that UE sends and setting up request message, first judge whether to set up and being connected of small cell eNB simultaneously, if, to small cell eNB, initiate to connect and set up request message, when receiving the connection that small cell eNB returns, set up after acknowledge message, carry out described to UE, send to combine connect the action of setting up message; Otherwise, directly carry out described to UE, send to combine connect the action of setting up message.
Described grand eNB is further used for, receive the NAS dedicated bearer generation request message that MME sends, this message is carried the NAS message that need to issue UE: NAS dedicated bearer activation request message, this message is carried the QoS information of business simultaneously, according to the QoS information of business, determining need to be by service distributing to small cell, S1 carrying is mapped on the radio bearer of small cell, then to UE, send and connect reprovision order, radio configuration and the NAS dedicated bearer activation request message of UE is carried in this order, the connection reprovision that reception UE returns completes order, to MME, return to NAS dedicated bearer and generate response message.
Described grand eNB is further used for, and receives the RRC signaling that UE sends, and this RRC signaling is passed through to small cell eNB; Receive the RRC signaling that small cell eNB sends, this RRC signaling is passed through to UE.
Described small cell eNB is further used for, and receives the RRC signaling from UE that grand eNB sends; In the time will sending RRC signaling to UE, by grand eNB, send this RRC signaling to UE.
Described small cell eNB is further used for, and when receiving the connection of carrying UE sign that grand eNB sends and set up request message, returns to connect set up acknowledge message to grand eNB.
As can be seen from the above technical solutions, the present invention is by the control plane of small cell is moved to grand eNB, and datum plane is still carried by small cell, has realized by small cell transmission data.
Accompanying drawing explanation
Fig. 1 is the networking exemplary plot of application scenarios of the present invention;
Fig. 2 passes through for what the embodiment of the present invention provided the method flow diagram that small cell carries out business data transmission;
The UE that Fig. 3 provides for the embodiment of the present invention activates the method flow diagram of NAS dedicated bearer;
The composition schematic diagram of the grand eNB that Fig. 4 provides for the embodiment of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the drawings and specific embodiments, describe the present invention.
Fig. 1 is the networking exemplary plot of application scenarios of the present invention, as shown in Figure 1, application scenarios of the present invention is: small cell eNB and gateway (SGW, Serving GateWay) between, there is no user plane interface (being S1-U interface), user's face anchor point of small cell eNB is grand eNB, and grand eNB is responsible for radio bearer to be mapped to small cell eNB.
Core concept of the present invention is: control signal eats dishes without rice or wine to send at grand eNB, wherein, control signal comprises Radio Resource control (RRC, Radio Resource Control) signaling and Non-Access Stratum (NAS, Non Access Stratum) signaling, business datum sends by small cell eNB, and the control message of Small cell eNB is issued subscriber equipment (UE through grand eNB, User Equipment), or the control function of small celleNB by grand eNB, be responsible for.
It is as follows that control signal sends rule:
The chain of command of UE is mainly responsible for by grand eNB, comprises the transmission of RRC and NAS signaling.The mobile management that Mobility Management Entity (MME, Mobility Management Entity) and grand eNB are responsible for UE as: adhere to, the flow process such as attachment removal, tracking area update (TAU, Tracking Area Update), community switching.
The transmission rule of NAS signaling is as follows:
Uplink: UE eats dishes without rice or wine NAS signaling to be sent to grand eNB by grand eNB, and grand eNB directly issues MME by this NAS signaling;
Downlink transfer: MME issues grand eNB by NAS signaling, and grand eNB issues UE by this NAS signaling.
The transmission rule of RRC signaling is as follows:
1, the RRC signaling of grand eNB directly eats dishes without rice or wine to send by grand eNB.
If have RRC Signalling exchange between 2 UE and small cell eNB:
Uplink: UE is sent to grand eNB by RRC signaling, and grand eNB passes through small cell eNB by this RRC signaling;
Downlink transfer: small cell eNB passes through grand eNB by RRC signaling, grand eNB issues UE by this RRC signaling again.
Business data transmission rule is as follows:
The foundation of service bearer is specially: except wireless side is carried on small cell eNB foundation, other carrying is all set up between grand eNB, SGW, packet data network gateway (PGW, Packet Data NetworkGateway).
Uplink business data transmission: UE sends to small cell eNB by business datum, and small cell eNB is transmitted to grand eNB by business datum, and grand eNB issues SGW by business datum again.
Downlink service data transmission: SGW sends to grand eNB by business datum, and grand eNB is transmitted to small cell eNB by business datum, and small cell eNB issues UE by business datum again.
Fig. 2 passes through for what the embodiment of the present invention provided the method flow diagram that small cell carries out business data transmission, and as shown in Figure 2, its concrete steps are as follows:
Step 201: the UE of idle (Idle) state carries out resident at macrocell.
The UE of Idle state only carries out resident at macrocell.
The UE of Idle state can by grand eNB to MME initiate mobile management flow process as: adhere to, attachment removal, tracking area update, community switching etc.
The UE of step 202:Idle state measures the signal quality of macrocell, detects the signal quality of small cell simultaneously.
Step 203: when UE has business datum will send or receive beep-page message, to grand eNB, initiate to combine to connect and set up request message, this message is carried the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI of UE, Cell Radio Network Temporary Identifier), and small cell correlation measurement information, as signal quality, cell ID etc., carry QoS (QoS, Qualityof Service) information etc. simultaneously.
Step 204: grand eNB receives this and combines to connect and set up request message, the load of the signal quality of the smallcell carrying according to this message, QoS of survice information and small cell etc., judge whether to set up and being connected of small cell eNB simultaneously, if so, perform step 205; Otherwise, execution step 206.
Step 205: grand eNB initiates to connect to small cell eNB and sets up request message, and this message is carried the C-RNTI of UE, and small cell eNB receives this message, returns to connect set up acknowledge message to grand eNB.
In actual applications, grand eNB receives to combine to connect and sets up after request message, can also not perform step 204,205, and directly performs step 206.
Step 206: grand eNB sends to combine to connect to UE and sets up message.
Step 207:UE receives this and combines to connect and set up message, to grand eNB, returns to associating connection setup complete message, and this message is carried NAS signaling.
NAS signaling is as service request (service request).
Step 208: grand eNB receives this associating connection setup complete message reads NAS signaling from this message, and this NAS signaling is passed through to MME by initial UE message (InitialUEMessage).
Step 209:MME receives this initial UE message, sends initial context set up request message to grand eNB.
Step 210: grand eNB receives this initial context and sets up request message, is mapped to small cell by radio bearer, and selectivity provides the UE related context information that part small cell needs simultaneously, as UE sign, UE wireless capability etc.
Step 211: grand eNB sends and connects reprovision order to UE, and the radio configuration of grand eNB side and the radio configuration of small cell side are carried in this order.
Step 212:UE receives this connection reprovision order, and the radio configuration of the radio configuration of the grand eNB side of carrying according to this order and small cell side completes self radio configuration, to grand eNB, sends and connects reprovision and complete order.
Step 213:UE and small cell eNB realize down-going synchronous and access at random, start to send business datum by smallcell eNB.
Step 214: when small cell eNB receives the business datum that UE sends, this business datum is transmitted to grand eNB, grand eNB issues SGW by this business datum again.
Step 215: when SGW will send business datum to UE, first business datum is sent to grand eNB, grand eNB is transmitted to small cell eNB by this business datum, and small cell eNB issues UE by business datum again.
In actual applications, some service needed activates NAS dedicated bearer, below provides specific implementation:
The method flow diagram of the activation NAS dedicated bearer that Fig. 3 provides for the embodiment of the present invention, as shown in Figure 3, its concrete steps are as follows:
Step 301:MME finds that new business need to generate NAS dedicated bearer, to grand eNB, send NAS dedicated bearer and generate request message, this message is carried the NAS message that need to issue UE: NAS dedicated bearer activation request message, this message is carried the QoS information of business simultaneously.
If UE request activates NAS dedicated bearer,, before this step, UE can send NAS message to MME: bearing resource allocation request message.
Step 302: grand eNB receives this NAS dedicated bearer and generates request message, according to the signal quality of the QoS information of business, self and small cell, load etc., determining need to be by service distributing to small cell, S1 carrying is mapped on the radio bearer of small cell, then to UE, send and connect reprovision order, radio configuration, the NAS message of UE is carried in this order: NAS dedicated bearer activation request message.
Step 303:UE receives this connection reprovision order, sends connection reprovision complete order to grand eNB.
Step 304: grand eNB receives this connection reprovision and completes order, returns to NAS dedicated bearer to MME and generates response message.
Step 305:UE sends NAS message to grand eNB: NAS dedicated bearer activation confirmation message, grand eNB is transmitted to MME by NAS dedicated bearer activation confirmation message.
Step 306:UE and small cell eNB realize down-going synchronous and access at random, start the service data transmission by smallcell eNB.
Step 307: when small cell eNB receives the business datum that UE sends, this business datum is transmitted to grand eNB, grand eNB issues SGW by this business datum again.
Step 308: when SGW will send business datum to UE, first business datum is sent to grand eNB, grand eNB is transmitted to small cell eNB by this business datum, and small cell eNB issues UE by business datum again.
After carrying in the embodiment of the present invention has been set up, concrete schematic diagram as shown in Figure 1.
The composition schematic diagram of the grand eNB that Fig. 4 provides for the embodiment of the present invention, user's face anchor point that this grand eNB is a plurality of smallcell eNB, and there is no interface in the user plane between small cell and SGW, as shown in Figure 4, this eNB mainly comprises: combines to connect and sets up module 41 and data transmission module 42, wherein:
Combine to connect and set up module 41: request message is set up in the connection of combining that reception UE sends, to UE, send to combine to connect and set up message, when the NAS signaling that receives UE and send: during service request, this NAS signaling is passed through to MME, the initial context that reception MME sends is set up request message, radio bearer is mapped to small cell, to UE, send and connect reprovision order, the radio configuration of grand eNB side and the radio configuration of small cell side are carried in this order, so that: UE is according to the radio configuration of the radio configuration of grand eNB side and small cell side, complete the radio configuration of this UE, and realize down-going synchronous with small cell eNB, the connection reprovision that reception UE returns completes order, determine to combine to connect and be successfully established, to data transmission module 42, send to combine to connect and be successfully established indication.
Combine to connect and set up module 41 and can be further used for, after connecting combining of receiving that UE sends and setting up request message, first judge whether to set up and being connected of small cell eNB simultaneously, if, to smallcell eNB, initiate to connect and set up request message, when receiving the connection that small cell eNB returns, set up after acknowledge message, carry out to send to combine to UE and connect the action of setting up message; Otherwise, directly carry out to UE and send and combine the action that message is set up in connection.
Combine to connect and set up module 41 and also can be further used for, receive the NAS dedicated bearer generation request message that MME sends, this message is carried the NAS message that need to issue UE: NAS dedicated bearer activation request message, this message is carried the QoS information of business simultaneously, according to the QoS information of business, the signal quality of this eNB and small cell, loads etc. are determined need to be by service distributing to small cell, S1 carrying is mapped on the radio bearer of small cell, then to UE, send and connect reprovision order, the radio configuration of UE is carried in this order, NAS message: NAS dedicated bearer activation request message, the connection reprovision that reception UE returns completes order, to MME, return to NAS dedicated bearer and generate response message, receive the NAS dedicated bearer activation confirmation message that UE sends, this NAS dedicated bearer activation confirmation message is transmitted to MME.
Combine to connect and set up module 41 and also can be further used for, receive the RRC signaling that UE sends, this RRC signaling is passed through to small cell eNB; Receive the RRC signaling that small cell eNB sends, this RRC signaling is passed through to UE.
Combine to connect and set up module 41 and also can be further used for, receive the NAS signaling that UE sends, this NAS signaling is transmitted to MME; Receive the NAS signaling that MME sends, this NAS signaling is transmitted to UE.
Data transmission module 42: receive to combine and connect set up that module 41 sends combine to connect and be successfully established indication, when receiving the business datum from UE that small cell eNB sends, this business datum is transmitted to SGW; When receiving the business datum that SGW sends, this business datum is issued to UE by small cell eNB.
Below provide the composition of the small cell eNB that the embodiment of the present invention provides, user's face anchor point of this small cell eNB is grand eNB, between this small cell eNB and SGW, there is no interface in the user plane, this small celleNB mainly comprises: data transmission module and RRC signalling module, wherein:
Data transmission module: when receiving the business datum that UE sends, this business datum is issued to SGW by grand eNB; When receiving the business datum from SGW that grand eNB sends, this business datum is transmitted to UE.
RRC signalling module: receive the RRC signaling from UE that grand eNB sends; In the time will sending RRC signaling to UE, by grand eNB, send this RRC signaling to UE.
Small cell eNB also can further comprise: connect and to set up module, for when receiving the connection of carrying UE sign that grand eNB sends and set up request message, return to connection set up acknowledge message to grand eNB.
The composition that below provides the UE that the embodiment of the present invention provides, this UE comprises Signalling exchange module and data interaction module, wherein:
Signalling exchange module: when having business datum will send or receive beep-page message, to grand eNB, initiate to combine to connect and set up request message, so that: grand eNB initiates to connect to small cell eNB and sets up request message; Receive that grand eNB returns combine to connect set up message, to grand eNB, send service request, this service request is NAS signaling, so that: grand eNB passes through MME by this service request; Receive the connection reprovision order that grand eNB sends, the radio configuration of the grand eNB side of carrying according to this order and the radio configuration of smallcell side, complete the radio configuration of this UE, realize down-going synchronous and access at random with small cell eNB, to data interaction module, send synchronously and accessed indication, this connection reprovision order is: grand eNB receives the initial context that MME sends and sets up request message, issues UE's after radio bearer is mapped to small cell.
Signalling exchange module is further used for, receive the connection reprovision order that grand eNB sends, radio configuration, the NAS dedicated bearer activation request message of UE is carried in this order, according to this order, complete the radio configuration of this UE, to grand eNB, send NAS dedicated bearer activation confirmation message, realize down-going synchronous and access at random with small cell eNB.
Data interaction module: receive that Signalling exchange module sends synchronous and accessed indication, in the time will sending business datum, this business datum is sent to small cell eNB, so that: small cell eNB is transmitted to SGW by this business datum by grand eNB; Or, receiving the business datum that small cell eNB sends, this business datum is: SGW is transmitted to small cell eNB's by grand eNB.
The embodiment of the present invention also provides a kind of LTE system, comprises above-mentioned grand eNB, small cell eNB and UE.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.

Claims (28)

1. one kind is passed through the method that small-cell small cell transmits data, it is characterized in that, be applied to: between smallcell evolution base station eNB and gateway SGW, there is no interface in the user plane, in the Long Term Evolution LTE system that user's face anchor point of small cell eNB is grand eNB, the method comprises:
Request message is set up in the connection of combining that grand eNB reception user equipment (UE) is sent, and sends to combine to connect set up message to UE; When the service request that receives UE and send, this service request is Non-Access Stratum NAS signaling, this NAS signaling is passed through to Mobility Management Entity MME, the initial context that reception MME sends is set up request message, radio bearer is mapped to small cell, to UE, send and connect reprovision order, the radio configuration of grand eNB side and the radio configuration of small cell side are carried in this order, so that: UE is according to the radio configuration of the radio configuration of grand eNB side and small cell side, complete the radio configuration of this UE, and realize down-going synchronous with small celleNB;
When grand eNB receives the business datum from UE that small cell eNB sends, this business datum is transmitted to SGW; When grand eNB receives the business datum that SGW sends, this business datum is issued to UE by small cell eNB.
2. method according to claim 1, is characterized in that, described grand eNB receives that user equipment (UE) sends combines to connect before setting up request message and further comprise:
The mobile management message that grand eNB initiates UE is transmitted to MME.
3. method according to claim 1, is characterized in that, described combine to connect set up the signal quality that request message carries the small cell that UE measures.
4. according to the method described in claim 1 or 3, it is characterized in that, described grand eNB receives that user equipment (UE) sends combine connect set up request message after, to UE, send to combine to connect before setting up message and further comprise:
Grand eNB judges whether to set up and being connected of small cell eNB simultaneously, if, to small celleNB initiation, carry the connection of UE sign and set up request message, when receiving the connection that small cell eNB returns, set up after acknowledge message, carry out described to UE, send to combine connect the action of setting up message; Otherwise, directly carry out described to UE, send to combine connect the action of setting up message.
5. method according to claim 1, is characterized in that, described method further comprises:
Grand eNB receives the NAS dedicated bearer generation request message that MME sends, this message is carried the NAS dedicated bearer activation request message that need to issue UE, this message is carried the QoS information of business simultaneously, according to the QoS information of business, determining need to be by service distributing to small cell, S1 carrying is mapped on the radio bearer of small cell, then to UE, send and connect reprovision order, radio configuration and the NAS dedicated bearer activation request message of UE is carried in this order, the connection reprovision that reception UE returns completes order, to MME, return to NAS dedicated bearer and generate response message.
6. method according to claim 1, is characterized in that, described method further comprises:
Grand eNB receives the RRC signaling that UE sends, and this RRC signaling is passed through to small cell eNB; Grand eNB receives the RRC signaling that small cell eNB sends, and this RRC signaling is passed through to UE.
7. by a method for small cell transmission data, it is characterized in that, be applied to: between small celleNB and SGW, there is no interface in the user plane, in the LTE system that user's face anchor point of small cell eNB is grand eNB, the method comprises:
Small cell eNB receives the business datum that UE sends, and this business datum is issued to SGW by grand eNB;
Small cell eNB receives the business datum from SGW that grand eNB sends, and this business datum is transmitted to UE.
8. method according to claim 7, is characterized in that, described method further comprises:
Small cell eNB receives the RRC signaling from UE that grand eNB sends;
In the time will sending RRC signaling to UE, by grand eNB, send this RRC signaling to UE.
9. method according to claim 7, is characterized in that, described method further comprises:
Small cell eNB receives the connection of carrying UE sign that grand eNB sends and sets up request message, returns to connect set up acknowledge message to grand eNB.
10. by a method for small cell transmission data, it is characterized in that, be applied to: between small celleNB and SGW, there is no interface in the user plane, in the LTE system that user's face anchor point of small cell eNB is grand eNB, the method comprises:
When UE has business datum will send or receive beep-page message, to grand eNB, initiate to combine to connect and set up request message, so that: grand eNB initiates to connect to small cell eNB and sets up request message; UE receives that grand eNB returns combines to connect and sets up message, to grand eNB, sends service request, and described service request is NAS signaling, so that: grand eNB passes through MME by this service request;
UE receives the connection reprovision order that grand eNB sends, the radio configuration of the radio configuration of the grand eNB side of carrying according to this order and small cell side, complete the radio configuration of self, realize down-going synchronous and access at random with small cell eNB, start to send business datum by small cell eNB, the order of described connection reprovision is: grand eNB receives the initial context that MME sends and sets up request message, issues UE's after radio bearer is mapped to small cell.
11. methods according to claim 10, is characterized in that, described UE sends business datum by small celleNB and comprises:
When UE will send business datum, this business datum is sent to small cell eNB, so that: small cell eNB is transmitted to SGW by this business datum by grand eNB;
Or UE receives the business datum that small cell eNB sends, this business datum is: SGW is transmitted to small cell eNB's by grand eNB.
12. methods according to claim 10, is characterized in that, described method further comprises:
UE receives the connection reprovision order that grand eNB sends, radio configuration, the NAS dedicated bearer activation request message of UE is carried in this order, according to this order, complete the radio configuration of self, to grand eNB, send NAS dedicated bearer activation confirmation message, realize down-going synchronous and access at random with small cell eNB, start the service data transmission by small cell eNB.
13. 1 kinds of grand eNB, is characterized in that, this grand eNB is user's face anchor point of a plurality of small cell eNB, and there is no interface in the user plane between small cell and SGW, and this eNB comprises:
Combine to connect and set up module: request message is set up in the connection of combining that reception UE sends, to UE, send to combine to connect and set up message; When the service request that receives UE and send, described service request is NAS signaling, this NAS signaling is passed through to MME, the initial context that reception MME sends is set up request message, radio bearer is mapped to small cell, to UE, send and connect reprovision order, the radio configuration of grand eNB side and the radio configuration of small cell side are carried in this order, so that: UE is according to the radio configuration of the radio configuration of grand eNB side and smallcell side, complete the radio configuration of this UE, and realize down-going synchronous with small cell eNB;
Data transmission module: when receiving the business datum from UE that small cell eNB sends, this business datum is transmitted to SGW; When receiving the business datum that SGW sends, this business datum is issued to UE by small cell eNB.
14. grand eNB according to claim 13, is characterized in that, described combine to connect set up module and be further used for,
After connecting combining of receiving that UE sends and setting up request message, first judge whether to set up and being connected of small cell eNB simultaneously, if, to small cell eNB, initiate to connect and set up request message, when receiving the connection that small cell eNB returns, set up after acknowledge message, carry out described to UE, send to combine connect the action of setting up message; Otherwise, directly carry out described to UE, send to combine connect the action of setting up message.
15. grand eNB according to claim 13, it is characterized in that, described combine to connect set up module and be further used for, receive the NAS dedicated bearer generation request message that MME sends, this message is carried the NAS dedicated bearer activation request message that need to issue UE, this message is carried the QoS information of business simultaneously, according to the QoS information of business, determining need to be by service distributing to small cell, S1 carrying is mapped on the radio bearer of smallcell, then to UE, send and connect reprovision order, radio configuration and the NAS dedicated bearer activation request message of UE is carried in this order, the connection reprovision that reception UE returns completes order, to MME, return to NAS dedicated bearer and generate response message.
16. grand eNB according to claim 13, is characterized in that, described combine to connect set up module and be further used for, receive the RRC signaling that UE sends, this RRC signaling is passed through to small cell eNB; Receive the RRC signaling that small cell eNB sends, this RRC signaling is passed through to UE.
17. 1 kinds of small cell eNB, is characterized in that, user's face anchor point of small cell eNB is grand eNB, between this small cell eNB and SGW, there is no interface in the user plane, and this small cell eNB comprises:
Data transmission module: when receiving the business datum that UE sends, this business datum is issued to SGW by grand eNB; When receiving the business datum from SGW that grand eNB sends, this business datum is transmitted to UE.
18. small cell eNB according to claim 17, is characterized in that, described small celleNB further comprises:
RRC signalling module: receive the RRC signaling from UE that grand eNB sends; In the time will sending RRC signaling to UE, by grand eNB, send this RRC signaling to UE.
19. according to the small cell eNB described in claim 17 or 18, it is characterized in that, described smallcell eNB further comprises:
Connect and to set up module: when receiving the connection of carrying UE sign that grand eNB sends and set up request message, to grand eNB, return to connect and set up acknowledge message.
20. 1 kinds of UE, is characterized in that, are applied to: between small cell eNB and SGW, there is no interface in the user plane, in the LTE system that user's face anchor point of small cell eNB is grand eNB, this UE comprises:
Signalling exchange module: when having business datum will send or receive beep-page message, to grand eNB, initiate to combine to connect and set up request message, so that: grand eNB initiates to connect to small cell eNB and sets up request message; Receive that grand eNB returns combine to connect set up message, to grand eNB, send service request, described service request is NAS signaling, so that: grand eNB passes through MME by this service request; Receive the connection reprovision order that grand eNB sends, the radio configuration of the grand eNB side of carrying according to this order and the radio configuration of smallcell side, complete the radio configuration of this UE, realize down-going synchronous and access at random with small cell eNB, the order of described connection reprovision is: grand eNB receives the initial context that MME sends and sets up request message, issues UE's after radio bearer is mapped to small cell;
Data interaction module: send business datum by small cell eNB.
21. UE according to claim 20, it is characterized in that, described data interaction module is further used for, in the time will sending business datum, this business datum is sent to small cell eNB, so that: small cell eNB is transmitted to SGW by this business datum by grand eNB; Or, receiving the business datum that small celleNB sends, this business datum is: SGW is transmitted to small cell eNB's by grand eNB.
22. UE according to claim 20, it is characterized in that, described Signalling exchange module is further used for, receive the connection reprovision order that grand eNB sends, radio configuration, the NAS dedicated bearer activation request message of UE is carried in this order, according to this order, complete the radio configuration of this UE, to grand eNB, send NAS dedicated bearer activation confirmation message, realize down-going synchronous and access at random with small cell eNB.
23. 1 kinds of LTE systems, is characterized in that, comprising: grand eNB, small cell eNB, and grand eNB is user's face anchor point of small cell eNB, and there is no interface in the user plane between small cell and SGW, wherein:
Grand eNB: request message is set up in the connection of combining that reception UE sends, sends to combine to connect to UE and sets up message; When the NAS signaling that receives UE and send: during service request, this NAS signaling is passed through to MME, the initial context that reception MME sends is set up request message, radio bearer is mapped to smallcell, to UE, send and connect reprovision order, the radio configuration of grand eNB side and the radio configuration of small cell side are carried in this order, so that: UE is according to the radio configuration of the radio configuration of grand eNB side and small cell side, complete the radio configuration of this UE, and realize down-going synchronous with small cell eNB; When receiving the business datum from UE that small celleNB sends, this business datum is transmitted to SGW; When receiving the business datum that SGW sends, this business datum is issued to UE by small cell eNB;
Small cell eNB: when receiving the business datum that UE sends, this business datum is issued to SGW by grand eNB; When receiving the business datum from SGW that grand eNB sends, this business datum is transmitted to UE.
24. LTE systems according to claim 23, it is characterized in that, described grand eNB is further used for, after connecting combining of receiving that UE sends and setting up request message, first judge whether to set up and being connected of small cell eNB simultaneously, if so, to small cell eNB, initiate to connect and set up request message, when receiving the connection that small cell eNB returns, set up after acknowledge message, carry out described to UE, send to combine connect the action of setting up message; Otherwise, directly carry out described to UE, send to combine connect the action of setting up message.
25. LTE systems according to claim 23, it is characterized in that, described grand eNB is further used for, receive the NAS dedicated bearer generation request message that MME sends, this message is carried the NAS message that need to issue UE: NAS dedicated bearer activation request message, this message is carried the QoS information of business simultaneously, according to the QoS information of business, determining need to be by service distributing to small cell, S1 carrying is mapped on the radio bearer of small cell, then to UE, send and connect reprovision order, radio configuration and the NAS dedicated bearer activation request message of UE is carried in this order, the connection reprovision that reception UE returns completes order, to MME, return to NAS dedicated bearer and generate response message.
26. LTE systems according to claim 23, is characterized in that, described grand eNB is further used for, and receive the RRC signaling that UE sends, and this RRC signaling is passed through to small cell eNB; Receive the RRC signaling that small cell eNB sends, this RRC signaling is passed through to UE.
27. LTE systems according to claim 23, is characterized in that, described small cell eNB is further used for, and receive the RRC signaling from UE that grand eNB sends; In the time will sending RRC signaling to UE, by grand eNB, send this RRC signaling to UE.
28. LTE systems according to claim 23, is characterized in that, described small cell eNB is further used for, and when receiving the connection of carrying UE sign that grand eNB sends and set up request message, return to connect set up acknowledge message to grand eNB.
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