CN103889003A - Long term evolution (LTE)network access method, access network and convergence gateway - Google Patents
Long term evolution (LTE)network access method, access network and convergence gateway Download PDFInfo
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- CN103889003A CN103889003A CN201210560517.7A CN201210560517A CN103889003A CN 103889003 A CN103889003 A CN 103889003A CN 201210560517 A CN201210560517 A CN 201210560517A CN 103889003 A CN103889003 A CN 103889003A
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Abstract
The invention discloses a long term evolution (LTE) network access method, access network and convergence gateway. An LTE network provided in the invention comprises the convergence gateway and a plurality of micro base stations, wherein the convergence gateway is connected with the plurality of micro base stations. The method comprises the following steps: any one or multiple micro base stations in the plurality of micro base stations sends or send control plane data to the convergence gateway; the convergence gateway receives the control plane data, converges the control plane data and sends the converged control plane data to a mobility management entity of a core network; and the convergence gateway receives the control plane data that the mobility management entity sends to one or multiple micro base stations of the plurality of micro base stations, and distributes the control plane data to the corresponding micro base stations. Through the technical scheme provided in the invention, the number of logic interfaces and signaling interaction between the access network and the core network are reduced, and the core network resources are saved.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of cut-in method of long-term evolving network, access network and aggregation gateway.
Background technology
For in the situation that frequency spectrum resource is limited, successfully manage the sharp increase of Future Data flow, Microcell (Small Cell) enhancing technology becomes Long Term Evolution and strengthens the effective solution in (Long TermEvolution-Advanced, LTE-A) version 12 and follow-up evolution.
For Microcell, because micro-base station transmitting power is lower and potential application carrier frequency is higher, its coverage is much smaller than macrocell.Therefore, for typical application scenarioss such as focus city and large-scale shopping areas, need to dispose more Microcell, strengthen with the effective covering and the speed that guarantee above-mentioned zone.
As shown in Figure 1, the existing wireless access network of LTE-A is only made up of base station (eNodeB), between base station, is connected by X2 logic interfacing, and base station is connected with core net by S1 interface simultaneously.In the time thering is more micro-base station in network, if adopt existing framework, each micro-base station needs to be directly connected with core net, cause micro-base station and core network element S1 logic interfacing number and Signalling exchange to rise in a large number, and cause the bookkeeping burden of mobile management entity (MobilityManagement Entity, MME) sharply to increase.Especially, in the time need to disposing more Microcell, will use micro-base station of greater number, cause logic interfacing number, the Signalling exchange of more and core net, not only occupy more resources of core network and be difficult to manage concentratedly.
Summary of the invention
According to the embodiment of the present invention aspect, a technical problem to be solved is: a kind of cut-in method, access network and aggregation gateway of long-term evolving network are provided, reduce and logic interfacing number and the Signalling exchange of core net, save resources of core network.
The cut-in method of a kind of LTE network that the embodiment of the present invention provides, described LTE network comprises aggregation gateway and multiple micro-base station, and described aggregation gateway is connected with described multiple micro-base stations, and described method comprises:
Any one in described multiple micro-base station or multiple micro-base station send chain of command data by S1-MME interface to described aggregation gateway;
Described aggregation gateway receives described chain of command data, and chain of command data described in polymerization send to the mobile management entity of core net by S1-MME interface; And
Described aggregation gateway is received described mobile management entity and is sent to the chain of command data of one or more micro-base stations in described multiple micro-base station by S1-MME interface, be distributed to corresponding micro-base station by S1-MME interface.
Preferably, described method also comprises:
Any one in described multiple micro-base station or multiple micro-base station send user face data by S1-U interface to described aggregation gateway;
Described aggregation gateway receives described user face data, user face data described in polymerization, and send to the gateway of core net by S1-U interface; And
Described aggregation gateway is received described gateway and is sent to the user face data of one or more micro-base stations in described multiple micro-base station by S1-U interface, be distributed to corresponding micro-base station by S1-U interface.
Preferably, described method also comprises:
Described micro-base station sends chain of command data by S1-U interface to the gateway of core net; And
Described micro-base station receives by S1-U interface the chain of command data that gateway sends.
Preferably, described method also comprises:
Described aggregation gateway, according to the offered load amount of described multiple micro-base stations, is coordinated the Radio Resource of described multiple micro-base stations.
Preferably, described aggregation gateway, according to the offered load amount of described multiple micro-base stations, is coordinated the Radio Resource of described multiple micro-base stations, specifically comprises:
Described aggregation gateway from described multiple micro-base stations, the magnitude relationship of recognition network load and predetermined threshold;
Be greater than or equal to described predetermined threshold in response to the offered load that identifies micro-base station, it is the micro-base station of full load take described micro-base station, described aggregation gateway is notified adjacent micro-base station of the micro-base station of described full load, to make described adjacent micro-base station that usable radio resources is dispatched to the non-Cell Edge User terminal of described adjacent micro-base station and be used;
Be less than described predetermined threshold in response to the offered load that identifies micro-base station, it is non-full load base station take described micro-base station, described aggregation gateway is notified adjacent micro-base station of the micro-base station of described non-full load, so that described adjacent micro-base station is used the Cell Edge User terminal of the different described adjacent micro-base stations of usable radio resources scheduling.
Preferably, described method also comprises:
Described micro-base station sends micro-switching information of base station to described aggregation gateway, described micro-switching information of base station comprise in the radio configuration contextual information of handover request message, ability information of user terminal, user terminal any one or multiple;
Described micro-switching information of base station is transmitted to corresponding micro-base station by described aggregation gateway.
Preferably, described aggregation gateway is multiple, and described method also comprises:
Any two aggregation gateway in described multiple aggregation gateway, transmit the micro-switching information of base station between the micro-base station that is connected to respectively described two aggregation gateway by X2 interface.
Preferably, described method also comprises:
Described aggregation gateway is connected to respectively the micro-switching information of base station between micro-base station of described aggregation gateway and described macro base station by X2 interface and macro base station transmission.
The aggregation gateway of a kind of LTE network providing according to the embodiment of the present invention, described aggregation gateway is connected with multiple micro-base stations, and described aggregation gateway comprises:
Chain of command data processing unit, the chain of command data that send for receiving micro-base station, chain of command data described in polymerization; And give corresponding micro-base station by the chain of command Data dissemination that sends to micro-base station receiving from mobile management entity;
Chain of command data transmit-receive unit, for sending to the chain of command data after polymerization the mobile management entity of core net; And reception mobile management entity sends to the chain of command data of micro-base station;
Wherein, between described chain of command data processing unit and described micro-base station, carry out the transmission of chain of command data by S1-MME interface; Between described Transmit-Receive Unit and described mobile management entity, carry out the transmission of chain of command data by S1-MME interface.
Preferably, described aggregation gateway also comprises:
User face data processing unit, the user face data sending for receiving micro-base station, user face data described in polymerization; And the user face data that sends to micro-base station receiving from gateway is distributed to corresponding micro-base station;
User face data Transmit-Receive Unit, for sending to the user face data after polymerization the gateway of core net; And reception gateway sends to the user face data of micro-base station;
Wherein, between described user face data processing unit and described micro-base station, carry out the transmission of user face data by S1-U interface; Between described user face data Transmit-Receive Unit and described gateway, carry out the transmission of user face data by S1-U interface.
Preferably, described aggregation gateway also comprises:
Interference coordination unit, for according to the offered load amount of described multiple micro-base stations, coordinates the Radio Resource of described multiple micro-base stations.
Preferably, described interference coordination unit, specifically for from described multiple micro-base stations, the magnitude relationship of recognition network load and predetermined threshold; Be greater than or equal to described predetermined threshold in response to the offered load that identifies micro-base station, it is the micro-base station of full load take described micro-base station, described aggregation gateway is notified adjacent micro-base station of the micro-base station of described full load, to make described adjacent micro-base station that usable radio resources is dispatched to the non-Cell Edge User terminal of described adjacent micro-base station and be used; Be less than described predetermined threshold in response to the offered load that identifies micro-base station, it is non-full load base station take described micro-base station, described aggregation gateway is notified adjacent micro-base station of the micro-base station of described non-full load, so that described adjacent micro-base station is used the Cell Edge User terminal of the different described adjacent micro-base stations of usable radio resources scheduling.
Preferably, described aggregation gateway also comprises:
Handover information transfer unit, is used to multiple micro-base stations to transmit micro-switching information of base station, described micro-switching information of base station comprise in the radio configuration contextual information of handover request message, ability information of user terminal, user terminal any one or multiple.
Preferably, described aggregation gateway also comprises:
X2 interface unit, for and adjacent aggregation gateway between, transmit the micro-switching information of base station being connected to respectively between described aggregation gateway and micro-base station of described adjacent aggregation gateway by X2 interface.
Preferably, described X2 interface unit, also for and macro base station between, transmit the micro-switching information of base station between the micro-base station that is connected to respectively described aggregation gateway and described macro base station by X2 interface.
A kind of LTE access network providing according to the embodiment of the present invention, described network comprises aggregation gateway, multiple micro-base station, described aggregation gateway is connected with described multiple micro-base stations, wherein:
Described aggregation gateway, the chain of command data that send for receiving described micro-base station; Chain of command data described in polymerization, and send to the mobile management entity of core net; And receive described mobile management entity and send to the chain of command data of one or more micro-base stations in described multiple micro-base station, be distributed to corresponding micro-base station;
Any one micro-base station in described multiple micro-base station, for sending chain of command data to described aggregation gateway; Receive the chain of command data that mobile management entity sends that come from of described aggregation gateway distribution;
Between described aggregation gateway and described micro-base station, carry out the transmission of chain of command data by S1-MME interface; Between described aggregation gateway and described mobile management entity, carry out the transmission of chain of command data by S1-MME interface.
Preferably, described aggregation gateway, the user face data also sending for receiving described micro-base station; User face data described in polymerization, and send to the gateway of core net; And receive described gateway and send to the user face data of one or more micro-base stations in described multiple micro-base station, be distributed to corresponding micro-base station.
Wherein, between described aggregation gateway and described micro-base station, carry out the transmission of user face data by S1-U interface; Between described aggregation gateway and described mobile management entity, carry out the transmission of user face data by S1-U interface.
Preferably, described micro-base station, also for sending user face data by S1-U interface to the gateway of core net; Receive by S1-U interface the user face data that described gateway sends.
Preferably, described aggregation gateway, specifically in described multiple micro-base stations, the magnitude relationship of recognition network load and predetermined threshold;
Be greater than or equal to described predetermined threshold in response to the offered load that identifies micro-base station, it is the micro-base station of full load take described micro-base station, notify adjacent micro-base station of the micro-base station of described full load, use the Radio Resource different from the micro-base station of described full load with the Cell Edge User terminal that makes adjacent micro-base station described in described adjacent micro-base station scheduling;
Be less than described predetermined threshold in response to the offered load that identifies micro-base station, it is non-full load base station take described micro-base station, notify adjacent micro-base station of the micro-base station of described non-full load, use the Radio Resource different from the micro-base station of described non-full load with the Cell Edge User terminal that makes adjacent micro-base station described in described adjacent micro-base station scheduling.
Preferably, described aggregation gateway, also be used to described multiple micro-base station to transmit micro-switching information of base station, described micro-switching information of base station comprise in the radio configuration contextual information of handover request message, ability information of user terminal, user terminal any one or multiple;
Described multiple micro-base station, also for sending micro-switching information of base station to described aggregation gateway; Or receive the handover request message that described aggregation gateway forwards.
Preferably, described network comprises multiple described aggregation gateway, and any two aggregation gateway in described multiple aggregation gateway, also for transmitting the micro-switching information of base station between the micro-base station that is connected to respectively described two aggregation gateway by X2 interface.
Preferably, described network also comprises:
Macro base station, for connecting by X2 interface and described aggregation gateway;
Described aggregation gateway, also for being connected to respectively the micro-switching information of base station between micro-base station of described aggregation gateway and described macro base station by X2 interface and macro base station transmission.
Preferably, described micro-base station is low power nodes LPN, specifically comprises long-distance radio frequency unit RU/RRH, Micro base station, micro-base station, femto base station Pico base station, Home eNodeB Femto base station, via node Relay Node.
Cut-in method, access network and the aggregation gateway of the long-term evolving network providing based on the above embodiment of the present invention, core network access is again carried out after polymerization by aggregation gateway in multiple micro-base stations, compared with existing scheme, can significantly reduce logic interfacing number and Signalling exchange between Access Network and core net, save resources of core network.For the scene of the more micro-base station deployment of following LTE, by logic interfacing number and Signalling exchange between effective reduction Access Network and core net, can also be by realizing centralized management and the optimization to micro-base station in aggregation gateway.
In addition, core network access is again carried out after polymerization by aggregation gateway in multiple micro-base stations, can also reduce the impact of micro-base station on core net.For example, when micro-base station frequent switch, owing to not directly being connected with core net, the switch of micro-base station can not bring the string SCTP that MME is relevant (Stream Control Transmission Protocol, SCTP) connect and set up and discharge, thereby avoid the operation of micro-base station on the impact of core net.
By the detailed description to exemplary embodiment of the present invention referring to accompanying drawing, it is clear that further feature of the present invention and advantage thereof will become.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not to draw according to actual proportionate relationship meanwhile.In similar label and letter accompanying drawing below, represent similar terms, therefore, once be defined in an a certain Xiang Yi accompanying drawing, in accompanying drawing subsequently, do not need it to be further discussed.
The accompanying drawing that forms a part for specification has been described embodiments of the invention, and together with the description for explaining principle of the present invention.
With reference to accompanying drawing, according to detailed description below, can more be expressly understood the present invention, wherein:
Fig. 1 illustrates the access network schematic diagram of existing long-term evolving network;
Fig. 2 illustrates the schematic flow sheet of a kind of embodiment of cut-in method of long-term evolving network provided by the present invention;
Fig. 3 illustrates the schematic flow sheet of the another kind of embodiment of cut-in method of long-term evolving network provided by the present invention;
Fig. 4 illustrates the schematic flow sheet of another embodiment of cut-in method of long-term evolving network provided by the present invention;
Fig. 5 illustrates the structural representation of a kind of embodiment of aggregation gateway of long-term evolving network provided by the present invention;
Fig. 6 illustrates that the access network of long-term evolving network provided by the present invention is a kind of and executes routine structural representation.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.It should be noted that: unless illustrate in addition, the parts of setting forth in these embodiments and the positioned opposite of step do not limit the scope of the invention.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in suitable situation, described technology, method and apparatus should be regarded as authorizing a part for specification.
In all examples with discussing shown here, it is exemplary that any occurrence should be construed as merely, rather than as restriction.Therefore, other example of exemplary embodiment can have different values.
In various embodiments of the present invention, by increased aggregation gateway in LTE wireless access network, thereby make LTE Access Network comprise aggregation gateway and two kinds of base stations node, wherein, aggregation gateway is as logic entity, can on Same Physical entity, be wholely set with macro base station, also can be independent physical entity.Base station comprises macro base station, micro-base station etc., and the transmitting power of micro-base station is lower than macro base station.Between aggregation gateway and multiple micro-base stations, be connected by setting up corresponding logic interfacing.
Micro-base station in various embodiments of the present invention can be various low power nodes (LowerPower Node, LPN), for example long-distance radio frequency unit (Remote Radio Unit/RemoteRadio Head, RU/RRH), micro-(Micro) base station, slight (Pico) base station, Home eNodeB (Femto), via node (Relay Node).
Shown in Figure 2, Fig. 2 illustrates the schematic flow sheet of a kind of embodiment of cut-in method of long-term evolving network provided by the present invention.LTE network comprises aggregation gateway and multiple micro-base station, and aggregation gateway is connected with multiple micro-base stations, and this embodiment cut-in method comprises:
201, any one in multiple micro-base stations or multiple micro-base station send chain of command data by S1-MME interface to aggregation gateway;
202, aggregation gateway receives chain of command data, and polymerization chain of command data send to the mobile management entity of core net by S1-MME interface; And
203 aggregation gateway are received mobile management entity and are sent to the chain of command data of one or more micro-base stations in multiple micro-base stations by S1-MME interface, be distributed to corresponding micro-base station by S1-MME interface.
The operation of above-mentioned 201-202 can with 203 operation simultaneously, prior to or after carry out in 203 operation.
In the method that the above embodiment of the present invention provides, core network access is again carried out after polymerization by aggregation gateway in multiple micro-base stations, compared with existing scheme, can significantly reduce logic interfacing number and Signalling exchange between Access Network and core net, reduce core network element resource, save resources of core network.
Micro-base station that aggregation gateway connects, transmit chain of command data, and user face data can transmit by aggregation gateway and core net through converging net and core net, also may be without aggregation gateway direct and core net transmit.For micro-base station, it can be transparent in network, whether having aggregation gateway, and whether micro-base station does not exist aggregation gateway in sensing network, does not distinguish thereby micro-base station is processed in operation.
Shown in Figure 3, Fig. 3 illustrates the schematic flow sheet of the another kind of embodiment of cut-in method of long-term evolving network provided by the present invention.The concrete example of transmitting by aggregation gateway and core net according to the inventive method embodiment user face data, the method, compared with Fig. 2 embodiment, can also comprise:
301, any one in multiple micro-base stations or multiple micro-base station send user face data by S1-U interface to aggregation gateway;
302, aggregation gateway receives user face data, syndication users face data, and send to the gateway (Service-Gateway, S-GW) of core net by S1-U interface; And
303, aggregation gateway is received gateway and is sent to the user face data of one or more micro-base stations in multiple micro-base stations by S1-U interface, be distributed to corresponding micro-base station by S1-U interface.
The operation of above-mentioned 301-302 can with 303 operation simultaneously, prior to or after carry out in 303 operation.In Fig. 3, S1 interface comprises S1-MME and S1-U interface.
Shown in Figure 4, Fig. 4 illustrates the schematic flow sheet of another embodiment of cut-in method of long-term evolving network provided by the present invention.The concrete example direct according to the inventive method embodiment user face data and core net is transmitted, the method, compared with Fig. 2 embodiment, can also comprise:
401, micro-base station sends chain of command data by S1-U interface to the gateway of core net; And
402, micro-base station receives by S1-U interface the chain of command data that gateway sends.
According to the inventive method embodiment concrete example, the method also comprises:
Aggregation gateway, according to the offered load amount of multiple micro-base stations, is coordinated the Radio Resource of multiple micro-base stations.Exemplarily, can coordinate the Radio Resource of multiple micro-base stations by following operation aggregation gateway:
Aggregation gateway from multiple micro-base stations, the magnitude relationship of recognition network load and predetermined threshold;
Be greater than or equal to predetermined threshold in response to the offered load that identifies micro-base station, it is the micro-base station of full load take micro-base station, adjacent micro-base station of the aggregation gateway notice micro-base station of full load, to make adjacent micro-base station that usable radio resources is dispatched to the non-Cell Edge User terminal of adjacent micro-base station and be used; Be less than predetermined threshold in response to the offered load that identifies micro-base station, it is non-full load base station take micro-base station, aggregation gateway is notified adjacent micro-base station of the micro-base station of non-full load, so that adjacent micro-base station is used the Cell Edge User terminal of the different adjacent micro-base stations of usable radio resources scheduling.
Based on above-described embodiment, for the multiple micro-base station being connected with same aggregation gateway, aggregation gateway, according to the physical load of each micro-base station, is carried out the coordination of scheduling of resource, realizes interference coordination.In the time of the full load of micro-base station, because all Radio Resources need to be dispatched for user's service in this micro-base station, therefore, aggregation gateway is notified adjacent micro-base station of this micro-base station, to make adjacent micro-base station, usable radio resources is dispatched to the non-Cell Edge User terminal of adjacent micro-base station and used, thereby avoid multiple Cell Edge User of adjacent micro-base station to be dispatched on identical Radio Resource, cause signal to disturb.In the time of the non-full load in micro-base station, can allow adjacent micro-base station that user is dispatched on different Radio Resources, to reduce interference.Radio Resource can time different time-domain resource or frequency domain resource.
According to the inventive method embodiment concrete example, the method also comprises:
Micro-base station sends micro-switching information of base station to aggregation gateway, micro-switching information of base station comprise in the radio configuration contextual information of handover request message, ability information of user terminal, user terminal any one or multiple; Micro-switching information of base station is transmitted to corresponding micro-base station by aggregation gateway.
In existing LTE framework, switch for the X2 interface between micro-base station, need between source base station and target BS, transmit base station handover relevant information.Compared with existing scheme, in the above-described embodiments, between multiple micro-base stations, can not connect by X2 interface.Micro-base station is connected with aggregation gateway, can complete the handover information transmission between relevant micro-base station by aggregation gateway, thereby effectively reduce X2 interface and physical connection number.
According to the inventive method embodiment concrete example, aggregation gateway can be multiple, the method also comprises: any two aggregation gateway in multiple aggregation gateway, transmit the micro-switching information of base station between the micro-base station that is connected to respectively two aggregation gateway by X2 interface.
Due in existing LTE access network, micro-base station need to adopt X2 interface to be connected with contiguous a large amount of macro base stations or micro-base station, the physical connection between these base stations and logic interfacing huge amount.By above-described embodiment, between micro-base station, need not set up between two each other X2 interface, but by transmitting handover relevant information between aggregation gateway, can significantly reduce logic interfacing and physical connection number between base station.
According to the inventive method embodiment concrete example, the method also comprises:
Aggregation gateway is connected to respectively the micro-switching information of base station between micro-base station of aggregation gateway and macro base station by X2 interface and macro base station transmission.
Similarly, in existing LTE framework, micro-base station need to adopt X2 interface to be connected with contiguous a large amount of macro base stations or micro-base station, the physical connection between these base stations and logic interfacing huge amount.By above-described embodiment, between micro-base station, need not set up between two each other X2 interface, but by transmitting handover relevant information between aggregation gateway and macro base station, thereby reduce logic interfacing and the physical connection number between base station.
The operation of transmitting handover information between the macro base station of above-mentioned aggregation gateway and vicinity or aggregation gateway, without through core net, has reduced the load of core net.For example, if user 1 carries out base station switching with user 2, affiliated micro-base station of user 1 is connected to an aggregation gateway 1, and affiliated micro-base station of user 2 is connected to another aggregation gateway 2, or affiliated base station of the user 2 is macro base station 2.If do not have X2 interface to be connected between the macro base station 2 of aggregation gateway 1 and vicinity or aggregation gateway 2, this base station switches to S1 switching, source base station and target BS forward the sending and receiving of realizing handover request notice and response message via MME by S1 interface, increase the load of core net.And by above-described embodiment, the X2 interface between aggregation gateway 1 and macro base station 2 or the aggregation gateway 2 of vicinity is connected, realize the transmission of handover information, can reduce the load of core net.
Shown in Figure 5, Fig. 5 illustrates the structural representation of a kind of embodiment of aggregation gateway of long-term evolving network provided by the present invention.Aggregation gateway in this embodiment is connected with multiple micro-base stations, and the aggregation gateway of LTE network comprises:
Chain of command data processing unit 501, the chain of command data that send for receiving micro-base station, polymerization chain of command data; And give corresponding micro-base station by the chain of command Data dissemination that sends to micro-base station receiving from mobile management entity;
Chain of command data transmit-receive unit 502, for sending to the chain of command data after polymerization the mobile management entity of core net; And reception mobile management entity sends to the chain of command data of micro-base station.
Between chain of command data processing unit and micro-base station, can carry out by S1-MME interface the transmission of chain of command data; Between Transmit-Receive Unit and mobile management entity, carry out the transmission of chain of command data by S1-MME interface.
Aggregation gateway can with existing network in macro base station be wholely set, also can be independent setting.
Aggregation gateway embodiment concrete example according to the present invention, aggregation gateway can also comprise:
User face data processing unit 503, the user face data sending for receiving micro-base station, syndication users face data; And the user face data that sends to micro-base station receiving from gateway is distributed to corresponding micro-base station;
User face data Transmit-Receive Unit 504, for sending to the user face data after polymerization the gateway of core net; And reception gateway sends to the user face data of micro-base station.
Between user face data processing unit and micro-base station, can carry out by S1-U interface the transmission of user face data; Between user face data Transmit-Receive Unit and gateway, carry out the transmission of user face data by S1-U interface.
Aggregation gateway embodiment concrete example according to the present invention, aggregation gateway can also comprise:
Interference coordination unit 505, for according to the offered load amount of multiple micro-base stations, coordinates the Radio Resource of multiple micro-base stations.
Exemplarily, interference coordination unit 505 is specifically for from multiple micro-base stations, the magnitude relationship of recognition network load and predetermined threshold; Be greater than or equal to predetermined threshold in response to the offered load that identifies micro-base station, it is the micro-base station of full load take micro-base station, adjacent micro-base station of the aggregation gateway notice micro-base station of full load, to make adjacent micro-base station that usable radio resources is dispatched to the non-Cell Edge User terminal of adjacent micro-base station and be used; Be less than predetermined threshold in response to the offered load that identifies micro-base station, it is non-full load base station take micro-base station, aggregation gateway is notified adjacent micro-base station of the micro-base station of non-full load, so that adjacent micro-base station is used the Cell Edge User terminal of the different adjacent micro-base stations of usable radio resources scheduling.
Aggregation gateway embodiment concrete example according to the present invention, aggregation gateway can also comprise:
Handover information transfer unit 506, is used to multiple micro-base stations to transmit micro-switching information of base station, micro-switching information of base station comprise in the radio configuration contextual information of handover request message, ability information of user terminal, user terminal any one or multiple.
Aggregation gateway embodiment concrete example according to the present invention, aggregation gateway can also comprise:
Aggregation gateway embodiment concrete example according to the present invention, X2 interface unit 507 also for and macro base station between, transmit the micro-switching information of base station between the micro-base station that is connected to respectively aggregation gateway and macro base station by X2 interface.X2 interface unit 507 can be arranged in handover information transfer unit 506.
Shown in Figure 6, Fig. 6 illustrates that the access network of long-term evolving network provided by the present invention is a kind of and executes routine structural representation.It should be noted that, in Fig. 6, except aggregation gateway, it is necessary that part network element is not realized Access Network of the present invention, for example, and macro base station, and core network element MME and S-GW.
The LTE access network that this embodiment provides comprises aggregation gateway 601, multiple micro-base station 602.Aggregation gateway 601 is connected with multiple micro-base stations 602.
The chain of command data that aggregation gateway 601 sends for receiving micro-base station; Polymerization chain of command data, and send to the mobile management entity of core net; And receive mobile management entity and send to the chain of command data of one or more micro-base stations in multiple micro-base stations, be distributed to corresponding micro-base station;
Any one micro-base station 602 in multiple micro-base stations, for sending chain of command data to aggregation gateway; Receive the chain of command data that mobile management entity sends that come from of aggregation gateway distribution.
Between aggregation gateway 601 and micro-base station 602, carry out the transmission of chain of command data by S1-MME interface; Between aggregation gateway and mobile management entity, carry out the transmission of chain of command data by S1-MME interface.
Network implementation example concrete example according to the present invention, the user face data that aggregation gateway 601 also sends for receiving micro-base station; Syndication users face data, and send to the gateway of core net; And receive gateway and send to the user face data of one or more micro-base stations in multiple micro-base stations, be distributed to corresponding micro-base station.Between aggregation gateway and micro-base station, carry out the transmission of user face data by S1-U interface; Between aggregation gateway and mobile management entity, carry out the transmission of user face data by S1-U interface.
Network implementation example concrete example according to the present invention, micro-base station 602 is also for sending user face data by S1-U interface to the gateway of core net; Receive by S1-U interface the user face data that gateway sends.
Network implementation example concrete example according to the present invention, aggregation gateway 601 is specifically in multiple micro-base stations, the magnitude relationship of recognition network load and predetermined threshold; Be greater than or equal to predetermined threshold in response to the offered load that identifies micro-base station, it is the micro-base station of full load take micro-base station, adjacent micro-base station of the notice micro-base station of full load, is used the Radio Resource different from the micro-base station of full load with the Cell Edge User terminal that makes the adjacent micro-base station of adjacent micro-base station scheduling;
Be less than predetermined threshold in response to the offered load that identifies micro-base station, it is non-full load base station take micro-base station, notify adjacent micro-base station of the micro-base station of non-full load, use the Radio Resource different from the micro-base station of non-full load with the Cell Edge User terminal that makes the adjacent micro-base station of adjacent micro-base station scheduling.
Network implementation example concrete example according to the present invention, aggregation gateway 601, also be used to multiple micro-base stations to transmit micro-switching information of base station, micro-switching information of base station comprise in the radio configuration contextual information of handover request message, ability information of user terminal, user terminal any one or multiple; Multiple micro-base stations 602, also for sending micro-switching information of base station to aggregation gateway; Or receive the handover request message that aggregation gateway forwards.
Network implementation example concrete example according to the present invention, this network comprises multiple aggregation gateway, any two aggregation gateway in multiple aggregation gateway, also for transmitting the micro-switching information of base station between the micro-base station that is connected to respectively two aggregation gateway by X2 interface.
Network implementation example concrete example according to the present invention, this network also comprises:
The LET Access Network of showing at Fig. 6 is made up of 2 aggregation gateway (as shown in node in Fig. 61 and node 2), 2 macro base stations (as shown in node in Fig. 61 and node 3), 8 micro-base stations (as shown in micro-base station 1-8 in Fig. 6).
Node 1 is the physical entity that macro base station and aggregation gateway are stood altogether, and node 2 is for realizing the physical entity of aggregation gateway, and node 3 is macro base station physical entity.MME and S-GW represent respectively mobile management entity and the gateway of core net.
Micro-base station 1,2,3,4 is connected with node 1 by S1 interface, and micro-base station 5,6,7,8 is connected with node 2 by S1 interface.Node 1,2,3 is connected with S-GW with the MME of core net by S1 interface.Between node 1,2,3, connect by X2 interface.Between micro-base station, can connect by X2 interface, as micro-base station 2 and micro-base station 3 in Fig. 6, also can not connect, as micro-base station 1 and micro-base station 2 in Fig. 6.
According to an above-mentioned embodiment, aggregation gateway can provide the polymerization distribution of S1 interface control plane data and user face data.Chain of command data and the user face data of the micro-base station therefore, being connected with aggregation gateway carry out polymerization distribution by this aggregation gateway.According to above-mentioned another embodiment, aggregation gateway also can only provide the polymerization distribution of S1 interface control plane data, and for the micro-base station being connected with aggregation gateway, its chain of command data send core net to through aggregation gateway; Its user face data, without through aggregation gateway, directly sends core net to.
So far, described in detail according to the cut-in method of a kind of long-term evolving network of the present invention, access network and aggregation gateway.For fear of covering design of the present invention, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
In this specification, each embodiment all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, same or analogous part cross-references between each embodiment.For access network and aggregation gateway embodiment, because it is substantially corresponding with embodiment of the method, so description is fairly simple, relevant part is referring to the part explanation of embodiment of the method.
May realize in many ways cut-in method, access network and the aggregation gateway of long-term evolving network of the present invention.For example, can realize by any combination of software, hardware, firmware or software, hardware, firmware cut-in method, access network and the aggregation gateway of long-term evolving network of the present invention.The said sequence that is used for the step of described method is only in order to describe, and the step of method of the present invention is not limited to above specifically described order, unless otherwise specified.In addition, in certain embodiments, can be also the program being recorded in recording medium by the invention process, these programs comprise the machine readable instructions for realizing the method according to this invention.Thereby the present invention also covers the recording medium of storing the program for carrying out the method according to this invention.
Although specific embodiments more of the present invention are had been described in detail by example, it should be appreciated by those skilled in the art, above example is only in order to describe, rather than in order to limit the scope of the invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above embodiment be modified.Scope of the present invention is limited by claims.
Claims (23)
1. a cut-in method for LTE network, is characterized in that, described LTE network comprises aggregation gateway and multiple micro-base station, and described aggregation gateway is connected with described multiple micro-base stations, and described method comprises:
Any one in described multiple micro-base station or multiple micro-base station send chain of command data by S1-MME interface to described aggregation gateway;
Described aggregation gateway receives described chain of command data, and chain of command data described in polymerization send to the mobile management entity of core net by S1-MME interface; And
Described aggregation gateway is received described mobile management entity and is sent to the chain of command data of one or more micro-base stations in described multiple micro-base station by S1-MME interface, be distributed to corresponding micro-base station by S1-MME interface.
2. method according to claim 1, is characterized in that, described method also comprises:
Any one in described multiple micro-base station or multiple micro-base station send user face data by S1-U interface to described aggregation gateway;
Described aggregation gateway receives described user face data, user face data described in polymerization, and send to the gateway of core net by S1-U interface; And
Described aggregation gateway is received described gateway and is sent to the user face data of one or more micro-base stations in described multiple micro-base station by S1-U interface, be distributed to corresponding micro-base station by S1-U interface.
3. method according to claim 1, is characterized in that, described method also comprises:
Described micro-base station sends chain of command data by S1-U interface to the gateway of core net; And
Described micro-base station receives by S1-U interface the chain of command data that gateway sends.
4. according to the method described in claim 2 or 3, it is characterized in that, described method also comprises:
Described aggregation gateway, according to the offered load amount of described multiple micro-base stations, is coordinated the Radio Resource of described multiple micro-base stations.
5. method according to claim 4, is characterized in that, described aggregation gateway, according to the offered load amount of described multiple micro-base stations, is coordinated the Radio Resource of described multiple micro-base stations, specifically comprises:
Described aggregation gateway from described multiple micro-base stations, the magnitude relationship of recognition network load and predetermined threshold;
Be greater than or equal to described predetermined threshold in response to the offered load that identifies micro-base station, it is the micro-base station of full load take described micro-base station, described aggregation gateway is notified adjacent micro-base station of the micro-base station of described full load, to make described adjacent micro-base station that usable radio resources is dispatched to the non-Cell Edge User terminal of described adjacent micro-base station and be used;
Be less than described predetermined threshold in response to the offered load that identifies micro-base station, it is non-full load base station take described micro-base station, described aggregation gateway is notified adjacent micro-base station of the micro-base station of described non-full load, so that described adjacent micro-base station is used the Cell Edge User terminal of the different described adjacent micro-base stations of usable radio resources scheduling.
6. method according to claim 4, is characterized in that, described method also comprises:
Described micro-base station sends micro-switching information of base station to described aggregation gateway, described micro-switching information of base station comprise in the radio configuration contextual information of handover request message, ability information of user terminal, user terminal any one or multiple;
Described micro-switching information of base station is transmitted to corresponding micro-base station by described aggregation gateway.
7. method according to claim 6, is characterized in that, described aggregation gateway is multiple, and described method also comprises:
Any two aggregation gateway in described multiple aggregation gateway, transmit the micro-switching information of base station between the micro-base station that is connected to respectively described two aggregation gateway by X2 interface.
8. method according to claim 6, is characterized in that, described method also comprises:
Described aggregation gateway is connected to respectively the micro-switching information of base station between micro-base station of described aggregation gateway and described macro base station by X2 interface and macro base station transmission.
9. an aggregation gateway for LTE network, is characterized in that, described aggregation gateway is connected with multiple micro-base stations, and described aggregation gateway comprises:
Chain of command data processing unit, the chain of command data that send for receiving micro-base station, chain of command data described in polymerization; And give corresponding micro-base station by the chain of command Data dissemination that sends to micro-base station receiving from mobile management entity;
Chain of command data transmit-receive unit, for sending to the chain of command data after polymerization the mobile management entity of core net; And reception mobile management entity sends to the chain of command data of micro-base station;
Wherein, between described chain of command data processing unit and described micro-base station, carry out the transmission of chain of command data by S1-MME interface; Between described Transmit-Receive Unit and described mobile management entity, carry out the transmission of chain of command data by S1-MME interface.
10. aggregation gateway according to claim 9, is characterized in that, described aggregation gateway also comprises:
User face data processing unit, the user face data sending for receiving micro-base station, user face data described in polymerization; And the user face data that sends to micro-base station receiving from gateway is distributed to corresponding micro-base station;
User face data Transmit-Receive Unit, for sending to the user face data after polymerization the gateway of core net; And reception gateway sends to the user face data of micro-base station;
Wherein, between described user face data processing unit and described micro-base station, carry out the transmission of user face data by S1-U interface; Between described user face data Transmit-Receive Unit and described gateway, carry out the transmission of user face data by S1-U interface.
11. aggregation gateway according to claim 10, is characterized in that, described aggregation gateway also comprises:
Interference coordination unit, for according to the offered load amount of described multiple micro-base stations, coordinates the Radio Resource of described multiple micro-base stations.
12. aggregation gateway according to claim 11, is characterized in that, described interference coordination unit, and specifically for from described multiple micro-base stations, the magnitude relationship of recognition network load and predetermined threshold; Be greater than or equal to described predetermined threshold in response to the offered load that identifies micro-base station, it is the micro-base station of full load take described micro-base station, described aggregation gateway is notified adjacent micro-base station of the micro-base station of described full load, to make described adjacent micro-base station that usable radio resources is dispatched to the non-Cell Edge User terminal of described adjacent micro-base station and be used; Be less than described predetermined threshold in response to the offered load that identifies micro-base station, it is non-full load base station take described micro-base station, described aggregation gateway is notified adjacent micro-base station of the micro-base station of described non-full load, so that described adjacent micro-base station is used the Cell Edge User terminal of the different described adjacent micro-base stations of usable radio resources scheduling.
13. aggregation gateway according to claim 11, is characterized in that, described aggregation gateway also comprises:
Handover information transfer unit, is used to multiple micro-base stations to transmit micro-switching information of base station, described micro-switching information of base station comprise in the radio configuration contextual information of handover request message, ability information of user terminal, user terminal any one or multiple.
14. aggregation gateway according to claim 13, is characterized in that, described aggregation gateway also comprises:
X2 interface unit, for and adjacent aggregation gateway between, transmit the micro-switching information of base station being connected to respectively between described aggregation gateway and micro-base station of described adjacent aggregation gateway by X2 interface.
15. aggregation gateway according to claim 13, is characterized in that, described X2 interface unit, also for and macro base station between, transmit the micro-switching information of base station between the micro-base station that is connected to respectively described aggregation gateway and described macro base station by X2 interface.
16. 1 kinds of LTE access networks, is characterized in that, described network comprises aggregation gateway, multiple micro-base station, and described aggregation gateway is connected with described multiple micro-base stations, wherein:
Described aggregation gateway, the chain of command data that send for receiving described micro-base station; Chain of command data described in polymerization, and send to the mobile management entity of core net; And receive described mobile management entity and send to the chain of command data of one or more micro-base stations in described multiple micro-base station, be distributed to corresponding micro-base station;
Any one micro-base station in described multiple micro-base station, for sending chain of command data to described aggregation gateway; Receive the chain of command data that mobile management entity sends that come from of described aggregation gateway distribution;
Between described aggregation gateway and described micro-base station, carry out the transmission of chain of command data by S1-MME interface; Between described aggregation gateway and described mobile management entity, carry out the transmission of chain of command data by S1-MME interface.
17. networks according to claim 16, is characterized in that, described aggregation gateway, the user face data also sending for receiving described micro-base station; User face data described in polymerization, and send to the gateway of core net; And receive described gateway and send to the user face data of one or more micro-base stations in described multiple micro-base station, be distributed to corresponding micro-base station.
Wherein, between described aggregation gateway and described micro-base station, carry out the transmission of user face data by S1-U interface; Between described aggregation gateway and described mobile management entity, carry out the transmission of user face data by S1-U interface.
18. networks according to claim 16, is characterized in that, described micro-base station, also for sending user face data by S1-U interface to the gateway of core net; Receive by S1-U interface the user face data that described gateway sends.
19. according to the network described in claim 17 or 18, it is characterized in that, and described aggregation gateway, specifically in described multiple micro-base stations, the magnitude relationship of recognition network load and predetermined threshold;
Be greater than or equal to described predetermined threshold in response to the offered load that identifies micro-base station, it is the micro-base station of full load take described micro-base station, notify adjacent micro-base station of the micro-base station of described full load, use the Radio Resource different from the micro-base station of described full load with the Cell Edge User terminal that makes adjacent micro-base station described in described adjacent micro-base station scheduling;
Be less than described predetermined threshold in response to the offered load that identifies micro-base station, it is non-full load base station take described micro-base station, notify adjacent micro-base station of the micro-base station of described non-full load, use the Radio Resource different from the micro-base station of described non-full load with the Cell Edge User terminal that makes adjacent micro-base station described in described adjacent micro-base station scheduling.
20. networks according to claim 19, it is characterized in that, described aggregation gateway, also be used to described multiple micro-base station to transmit micro-switching information of base station, described micro-switching information of base station comprise in the radio configuration contextual information of handover request message, ability information of user terminal, user terminal any one or multiple;
Described multiple micro-base station, also for sending micro-switching information of base station to described aggregation gateway; Or receive the handover request message that described aggregation gateway forwards.
21. networks according to claim 20, it is characterized in that, described network comprises multiple described aggregation gateway, any two aggregation gateway in described multiple aggregation gateway, also for transmitting the micro-switching information of base station between the micro-base station that is connected to respectively described two aggregation gateway by X2 interface.
22. networks according to claim 20, is characterized in that, described network also comprises:
Macro base station, for connecting by X2 interface and described aggregation gateway;
Described aggregation gateway, also for being connected to respectively the micro-switching information of base station between micro-base station of described aggregation gateway and described macro base station by X2 interface and macro base station transmission.
23. according to claim 16 to the network described in 18,20 to 22 any one, it is characterized in that, described micro-base station is low power nodes LPN, specifically comprises long-distance radio frequency unit RU/RRH, Micro base station, micro-base station, femto base station Pico base station, Home eNodeB Femto base station, via node Relay Node.
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