CN106851856A

CN106851856A - A kind of radio communication method for building up and the network equipment based on mobile relay

Info

Publication number: CN106851856A
Application number: CN201611208687.3A
Authority: CN
Inventors: 陈山枝; 王胡成
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-12-23
Filing date: 2016-12-23
Publication date: 2017-06-13
Anticipated expiration: 2036-12-23
Also published as: CN106851856B

Abstract

The present invention discloses a kind of radio communication method for building up and the network equipment based on mobile relay, and the method includes：Mobile relay is set up chain of command and is connected by the first macro base station and core net, and the chain of command is connected to provide chain of command information transfer to access the UE of the mobile relay；The mobile relay is set up user plane and is connected with the first small base station scanned, the user plane is connected to provide user plane information transmission to access the UE of the mobile relay, it is used to provide a kind of new wireless communications method, it is possible to achieve the high speed data transfers of mobile terminal under the scene of high-speed mobile.

Description

A kind of radio communication method for building up and the network equipment based on mobile relay

Technical field

Set the present invention relates to the communications field, more particularly to a kind of radio communication method for building up and network based on mobile relay It is standby.

Background technology

In recent years, the high-speed railway of China is achieved and developed rapidly, it is contemplated that to the year two thousand twenty, when 200 kilometers of China and the above Speed high speed railway construction mileage will more than 1.8 ten thousand kilometers, by account for world's high-speed railway total kilometrage more than half.In high-speed iron Under the environment of road, wireless channel ring is caused because high-speed motion produces Doppler effect to cause that wireless signal centre frequency shifts Border deteriorates, and time requirement of the high-speed motion to mobile subscriber's access, switching etc. is stricter, mobile network easily occurs and covers A series of problems, such as lid overlay region deficiency, handover success rate decline, access difficulty.

On the other hand, the car body penetration loss of the bullet train that country's high-speed railway is used hangs down than conventional train car body at present Big 10dB of straight penetration loss or so, the loss high of high-speed train body has a significant impact to network coverage quality, particularly soft Sleeping carriage loss is more serious, causes radio signal quality in railway car poor.Therefore, how to be under high-speed mobile environment User provides the important topic that good network service quality has become operator and equipment vendor's concern.

General high-speed rail mobile communication system improves communication by increasing base station coverage density, the fixed repeater of placement etc. Quality, as shown in figure 1, this dramatically increases mobile network's construction cost, and each user and base station or repeater in train Signal of communication experiences fading channel, therefore the high data rate that conventional method can not effectively solve indoor contour shade environment covers Lid.

In addition, current 3GPP Rel 10 proposed fixed relay technology and mobile relay technology.Wherein, in fixed After mainly for solving to arrange net cost and covering problem.Fig. 2 is the network architecture after lte-a system introduces relaying, and relaying is logical The donor cell (donor cell) crossed under DeNB (Donor eNB, donor base station) are linked into core net, and core net without straight The wireline interface for connecing, each RN can control one or more cells.Under this framework, the interface between UE and RN is referred to as Uu Mouthful, and the interface between RN and DeNB is referred to as Un mouthfuls.DeNB is integrated with part PGW/SGW functions.RN has that UE's and eNB is dual Identity.RN start-up courses can be divided into two stages：When in the first stage, RN arbitrarily accesses a base station with the identity of UE, to Network registry, accesses RN OAM, and download allows the DeNB cell lists for accessing, and then RN is nullified to network；In second stage When, RN selects a DeNB cell for allowing to access, and setting up RRC between the DeNB is connected.DeNB is that RN selects one properly MME, MME select DeNB as RN S-GW/P-GW.DeNB for RN set up default bearing and needed for dedicated bearer, so Node configuration information is downloaded to RN by OAM afterwards, and RN is configured.After RN resettles necessary S1 interfaces and X2 interface, so that it may With the normal work as base station.

When in the first stage, eNB, MME that RN is accessed can be existing equipment, you can not support RN.In second-order The base station and MME that Duan Shi, RN are accessed must support RN.And in this stage, DeNB is by oneself integrated PGW/SGW's IP address is sent to MME, and MME selects DeNB as the PGW/SGW of RN according to the IP address for receiving, and sets up necessary connecing therewith Mouthful.

Fixed relay mainly for solve high-speed mobile environment in signal covering it is poor, and switch it is frequent the problems such as, move RN can be deployed on the car body of high-speed mobile, for strengthening the signal quality in car body, it is also possible to reduced by group's switching The switching times and location updating number of times of UE.

Fig. 3 is a kind of MRN (Mobile Relay node, mobile relay section that can be applied in high-speed mobile environment Point) node relationships schematic diagram.MRN connects network with the identity of UE first, and network is carried for MRN sets up EPS.MRN accesses OAM, Download necessary configuration data.From UE, MRN is exactly the serving BS of UE.When UE accesses RN, all data of UE are all reflected It is mapped in the carrying of MRN, next-hop node is sent to through the PGW of MRN.

But current technology is still present problems with：Once the 1st, after the PGW grapplings of MRN, it is impossible to change, this causes The PGW that the signaling and data of all long-range UE serviced by MRN have to pass through MRN is route, and this will cause data transmission route The redundancy in footpath；2nd, under cell conversion frequently scene, MRN needs to perform substantial amounts of cell measurement and report, what exacerbation was eated dishes without rice or wine Signaling burden.3rd, network design is required, the PGW of the service MRN in core net needs the function to strengthen.

Therefore, the present invention is proposed a kind of based on the wireless of mobile relay for the defect of traditional high-speed rail mobile communication system Communication means, to improve the communication quality of the mobile terminal under high-speed mobile environment, meets user's online, receiving and dispatching mail, video Deng the demand of data service.

The content of the invention

The embodiment of the present invention provides a kind of radio communication method for building up and the network equipment based on mobile relay, is used to provide A kind of new wireless communication system, it is possible to achieve the high speed data transfers of mobile terminal under the scene of high-speed mobile.

The inventive method includes a kind of radio communication method for building up based on mobile relay, and the method includes：

Mobile relay is set up chain of command and is connected by the first macro base station and core net, and the chain of command is connected to access The UE of the mobile relay provides chain of command information transfer；

The mobile relay is set up user plane and is connected with the first small base station scanned, and the user plane is connected to connect The UE for entering the mobile relay provides user plane information transmission.

It can be seen that, mobile relay just can simultaneously in the equipment of high-speed mobile terminal provide control plane wireless coverage and User plane wireless coverage, when mobile-relay station is placed on bullet train, the channel between each user and mobile relay is passed Broadcast environment geo-stationary or move slowly at, can support that higher data rate is transmitted.

Further, when mobile relay is set up after chain of command is connected by the first macro base station and core net, also include：

After the mobile relay receives the up NAS signaling message that UE sends, by the chain of command connect will be described on Row NAS signaling message is sent to the core net；

The mobile relay receives the descending NAS signaling message that the core net sends by the chain of command Afterwards, the NAS signaling message is sent to the UE.

Further, the mobile relay is set up chain of command and is connected by the first macro base station and core net, including：

The mobile relay sends registration request by first macro base station to core net；

The mobile relay receives the registration reply message of the core net generation that first macro base station sends.

Further, the mobile relay is set up user plane and is connected with the first small base station scanned, including：

The mobile relay receives the small base that communication service is provided for the mobile relay that first macro base station sends Stand information list, wherein, put in order including at least the mark of small base station, and/or small base station in the small base station information list；

The mobile relay is scanned small to first in the small base station information list according to the small base station information list During base station, set up user plane with the described first small base station and be connected.

The mobile relay scans the broadcast message of small base station；

According to the signal intensity of the small base station scanned, selected from the small base station for belonging to small base station information set scanned The first small base station is selected out, wherein, the small base station information collection is combined into first macro base station and is sent to the mobile relay in advance First macro base station under all of small base station information；

The mobile relay is set up user plane and is connected with the described first small base station.

Further, the mobile relay is set up user plane and is connected with the described first small base station, including：

The mobile relay is set up D2D and is connected with the described first small base station, wherein:

The mobile relay sends D2D connections and sets up request to the described first small base station, and the D2D connections are set up in request Mark comprising the mobile relay and IP address type information；

The IP address that the mobile relay is distributed according to the described first small base station is set up D2D and is connected with the described first small base station Connect, wherein, the IP address is that request generation is set up in the described first small base station according to D2D connections.

The chain of command unit scan of the mobile relay carrys out the broadcast message of base station from childhood；

When the chain of command unit of the mobile relay arrives the first small base station in scanning, the mobile relay is notified User plane unit set up user plane with the described first small base station and be connected.

Further, the mobile relay and the described first small base station are set up after user plane is connected, and also include：

The small base station information that the mobile relay is provided according to macro base station carries out the scanning of small base station；

The small base station information and signal intensity that the mobile relay is based on macro base station offer are selected from the small base station scanned Select the second small base station；

The mobile relay is set up user plane and is connected with the described second small base station.

Further, before the mobile relay is set up with the described second small base station and is connected, also include：

The mobile relay is sent to control the mark of the described second small base station when scanning is to the second small base station The macro base station of the second small base station, so that the macro base station issues configuration message to the described second small base station, the configuration disappears Cease and set up the authority being connected with the described second small base station for indicating the mobile relay to possess.

Further, before the small base station information that the mobile relay is provided according to macro base station carries out the scanning of small base station, Also include：

The measurement report that the mobile relay is reported to first macro base station forwarding UE；

When the measurement report meets to impose a condition, the mobile relay is switched to and the from first macro base station Two macro base stations, second macro base station is that the first macro base station is selected according to the measurement report of UE.

Further, the mobile relay and the described second small base station are set up after user plane is connected, and also include：

The mobile relay is initiated transmission tunnel and updates request to the core net, and the renewal request is passed through for setting up The new user plane transmission tunnel of the second small base station.

Further, after the mobile relay updates to core net initiation transmission tunnel and asks, also include：

The mobile relay transmits tunnel and carries out up-downgoing data transfer using the new user plane；

After the mobile relay determines that transmitting tunnel using new user plane carries out downlink data transmission, in the movement Tunnel is transmitted after the former user plane by the first small base station is deleted.

Further, the mobile relay using the new user plane transmit tunnel carry out up-downgoing data transfer it Before, also include：

The mobile relay receive the core net user plane unit send end mark instruction message after, It is determined to carry out downlink data transmission using new user plane transmission tunnel.

The mobile relay receives UE and carries the upstream data for sending by ascending idle port；

The mobile relay determines that the ascending idle port carries the upper of corresponding transmission tunnel according to default mapping relations Row Tunnel End Point Identifier, and to be forwarded by the transmission tunnel after the upstream data addition uplink tunnel Endpoint ID To core net.

The mobile relay receives the core net by transmitting the downlink data that tunnel sends；

The mobile relay determines descending sky according to default mapping relations by the purpose IP address of the downlink data Mouthpiece is carried, and the downlink data is sent on the corresponding UE of the purpose IP address by downlink space interface carrying.

Further, the transmission tunnel is the shared other tunnels of node level of many UE, and the ascending idle port carry with The transmission tunnel is many-to-one relationship.

Further, the default mapping relations are set up as follows：

The mobile relay receives IP address and the uplink tunnel Endpoint ID that the core net sends, the IP address and Uplink tunnel Endpoint ID is the core net according to the IP address and transmission tunnel that the PDU connection requests of UE are that the UE is distributed Uplink tunnel Endpoint ID；

Downlink tunnel Endpoint ID of the mobile relay according to the IP address of itself distribution transmission tunnel；

The ascending idle port that the mobile relay configures the UE is carried and uplink tunnel Endpoint ID, the descending sky of the UE Mouthpiece carries the IP address and the mapping relations of downlink tunnel Endpoint ID with the UE.

Based on same inventive concept, the embodiment of the present invention provides a kind of network equipment, and the network equipment includes：

Chain of command unit, is connected for setting up chain of command by the first macro base station and core net, and the chain of command connection is used Chain of command information transfer is provided in the UE for the access network equipment；

User plane unit, is connected for setting up user plane with the first small base station scanned, and the user plane is connected to For the UE for accessing the network equipment provides user plane information transmission.

Further, the chain of command unit, after receiving the up NAS signaling message that UE sends, by institute State chain of command connection and the up NAS signaling message is sent to the core net；

The user plane unit, specifically for receiving the descending of the core net transmission by the chain of command After NAS signaling message, the NAS signaling message is sent to the UE.

Further, the chain of command unit is additionally operable to：Registration request is sent to core net by first macro base station； Receive the registration reply message of the core net generation that first macro base station sends.

Further, the chain of command unit specifically for：Receive that first macro base station sends for the network sets The standby small base station information list that communication service is provided, wherein, including at least the mark of small base station in the small base station information list, And/or small base station puts in order；According to the small base station information list, the first small base in the small base station information list is scanned Stand.

Further, the chain of command unit specifically for：

Scan the broadcast message of small base station；

According to the signal intensity of the small base station scanned, selected from the small base station for belonging to small base station information set scanned The first small base station is selected out, wherein, the small base station information collection is combined into first macro base station and is sent to the network equipment in advance First macro base station under all of small base station information.

Further, the chain of command unit specifically for：

D2D connections being sent to the described first small base station and setting up request, the D2D connections are set up and the network is included in request The mark and IP address type information of equipment；

The user plane unit specifically for：The IP address distributed according to the described first small base station and the described first small base station D2D connections are set up, wherein, the IP address is that request generation is set up in the described first small base station according to D2D connections.

Further, the chain of command unit specifically for：Scanning carrys out the broadcast message of base station from childhood；

The user plane unit specifically for：When the chain of command unit arrives the first small base station in scanning, notify The user plane unit is set up user plane and is connected with the described first small base station.

Further, the chain of command unit is additionally operable to：Small base station is carried out according to the small base station information that macro base station is provided Scanning；The small base station information and signal intensity provided based on macro base station select the second small base station from the small base station scanned；

The user plane unit, is additionally operable to set up user plane with the described second small base station and is connected.

Further, the chain of command unit is additionally operable to：

When scanning is to the second small base station, the mark of the described second small base station is sent to controlling the described second small base The macro base station stood, so that the macro base station issues configuration message to the described second small base station, the configuration message is used to indicate institute State the network equipment and possess the authority set up with the described second small base station and be connected.

Further, the chain of command unit, is additionally operable to：To the measurement report that first macro base station forwarding UE is reported；

When the measurement report meets to impose a condition, switched to and the second macro base station, institute from first macro base station It is that the first macro base station is selected according to the measurement report of UE to state the second macro base station.

Further, the chain of command unit, is additionally operable to：

Transmission tunnel is initiated to the core net update request, it is described to update request for setting up by the described second small base The new user plane transmission tunnel stood.

Wherein, the user plane unit, is additionally operable to：Transmitting tunnel using the new user plane carries out up-downgoing data biography It is defeated；

After it is determined that carrying out downlink data transmission using new user plane transmission tunnel, original is deleted by the first small base station User plane transmits tunnel.

Further, after the instruction message of the end mark that the user plane unit for receiving the core net sends, really Surely tunnel can be transmitted using new user plane carries out downlink data transmission.

Further, the user plane unit, specifically for：Receive UE and the upper line number for sending is carried by ascending idle port According to；According to default mapping relations, determine that the ascending idle port carries the uplink tunnel Endpoint ID in corresponding transmission tunnel, and Core net is forwarded to by the transmission tunnel after adding the uplink tunnel Endpoint ID for the upstream data.

Further, the user plane unit, specifically for：The core net is received by transmitting the descending of tunnel transmission Data；According to default mapping relations, determine that downlink space interface is carried by the purpose IP address of the downlink data, and will be described Downlink data is carried by the downlink space interface and is sent on the corresponding UE of the purpose IP address.

Wherein, the transmission tunnel is the shared other tunnels of node level of many UE, and the ascending idle port carry with it is described Transmission tunnel is many-to-one relationship.

Further, the chain of command unit, specifically for：Receive IP address and uplink tunnel that the core net sends Endpoint ID, the IP address and uplink tunnel Endpoint ID are that the core net is the UE according to the PDU connection requests of UE The IP address of distribution and the uplink tunnel Endpoint ID in transmission tunnel；

The downlink tunnel Endpoint ID in the IP address distribution transmission tunnel according to itself；The ascending idle port for configuring the UE is held Carry and carried and the IP address of the UE and downlink tunnel Endpoint ID with the downlink space interface of uplink tunnel Endpoint ID, the UE Mapping relations.

The embodiment of the present invention in order to improve the network capacity under the communication scenes of high-speed mobile, using 5G chain of command with The network architecture that user plane is separate, i.e. chain of command provide wireless coverage by the macro base station of support low frequency, and user plane is high by supporting The small base station of frequency provides wireless coverage, and mobile relay is then disposed ON TRAINS, and the mobile relay has chain of command unit MR CP (Mobile Relay Control Plane) and user plane unit MR UP (Mobile Relay User Plane), wherein Chain of command function be mainly with the AMF of core net (Access and mobility management function, access and Mobile control function) (or MMF (mobility management function, mobile management function to ps domain)) foundation is normally NAS signaling is connected；And the user plane functions of mobile relay are then and SC BS (small cell base station, small base station) Set up D2D (Device to Device, device-to-device) connections.So, mobile relay just can the in-car offer of nematic simultaneously Control plane wireless coverage and user plane wireless coverage, when mobile-relay station is placed on bullet train, each user with move Move the dissemination channel environment geo-stationary between relaying or move slowly at, can support that higher data rate is transmitted.

Brief description of the drawings

Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description Accompanying drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing.

A kind of high-speed rail mobile communication system schematic diagram that Fig. 1 is provided for prior art；

A kind of E-UTRAN network architecture diagrams containing RN that Fig. 2 is provided for prior art；

The network architecture diagram of mobile RN in a kind of LTE-A that Fig. 3 is provided for prior art；

Fig. 4 is a kind of high-speed rail mobile communication system schematic diagram one based on mobile relay provided in an embodiment of the present invention；

Fig. 5 is a kind of high-speed rail mobile communication system schematic diagram two based on mobile relay provided in an embodiment of the present invention；

Fig. 6 is the method stream that UE provided in an embodiment of the present invention obtains network service under the high-speed rail mobile communication system Journey schematic diagram；

Fig. 7 is a kind of radio communication method for building up schematic flow sheet based on mobile relay provided in an embodiment of the present invention；

Fig. 8 is the control plane agreement of the cordless communication network supported and be based on mobile relay provided in an embodiment of the present invention Stack；

Fig. 9 is the user-plane protocol of the cordless communication network supported and be based on mobile relay provided in an embodiment of the present invention Stack；

Figure 10 is that the first macro base station provided in an embodiment of the present invention sets up the process that chain of command is connected with core net；

Figure 11 is the schematic diagram that SC BS lists provided in an embodiment of the present invention issue the first small base station；

Figure 12 is the schematic diagram that mobile relay provided in an embodiment of the present invention independently selects the first small base station；

Figure 13 is that mobile relay provided in an embodiment of the present invention sets up the schematic diagram that D2D is connected with the first small base station；

Figure 14 is the interactive schematic diagram that mobile relay provided in an embodiment of the present invention switches to the second small base station；

Figure 15 is the interactive schematic diagram that mobile relay provided in an embodiment of the present invention switches to the second macro base station；

Figure 16 is the interactive schematic diagram that mobile relay provided in an embodiment of the present invention sets up PDU connections；

Figure 17 is a kind of structural representation of network equipment provided in an embodiment of the present invention.

Specific embodiment

In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into One step ground is described in detail, it is clear that described embodiment is only some embodiments of the invention, rather than whole implementation Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made All other embodiment, belongs to the scope of protection of the invention.

It should be noted that describing various aspects herein in connection with terminal and/or base station.Terminal, refers to and provides a user with The equipment (device) of voice and/or data connectivity, including wireless terminal or catv terminal.Wireless terminal can be with nothing The portable equipment of line linkage function is connected to other processing equipments of radio modem, through wireless access network and one The mobile terminal that individual or multiple core nets are communicated.For example, wireless terminal can be mobile phone (or be " honeycomb " electricity Words) and computer with mobile terminal.And for example, wireless terminal can also be portable, pocket, hand-held, in computer Mobile device put or vehicle-mounted.For another example, wireless terminal can (English be for movement station：Mobile station), access (English is point：Access point) or user equipment (English is：User equipment, abbreviation UE) a part.

In order to solve the problems, such as to be mentioned in background technology, the embodiment of the present invention is by improving existing high ferro mobile communication system System, there is provided the network architecture that a kind of chain of command with user plane separate, i.e. control plane provide wireless by the macro base station of support low frequency Covering, and user plane provides covering by the small base station of support high frequency, and mobile relay is set in high ferro, as shown in figure 4, and should Mobile relay has chain of command function and user plane functions, and wherein chain of command function is mainly the AMF (or MMF) with core net Set up normal NAS signaling connection；And the user plane functions of mobile relay are then to set up D2D with SC BS to be connected.Need explanation It is that the mobile relay in the embodiment of the present invention has chain of command function and user plane functions, this two parts function can be integrated in In same mobile relay, or respectively integrated MR CP (Mobile Relay Control Plane, mobile relay control Face unit processed) and MR UP (Mobile Relay User Plane, mobile relay user plane unit) this two parts, the two lists Unit constitutes mobile relay, when mobile relay is made up of MR CP and MR UP, the net that above-mentioned chain of command with user plane separate Network framework is as shown in Figure 5.Content, is introduced in the form of mobile relay includes MR CP and MR UP herein below, if mobile It is an entirety to relay, then accordingly reduce the flow of transmission message between MR CP and MR UP.

Under the above-mentioned network architecture, UE obtains the flow of network service as shown in fig. 6, in figure 6, UE is entered using the framework The process of row up-downgoing data transfer is as follows：

Step a, the first macro base station (Macro NextGen NodeB, macro base station), according to network condition, alternatively activates it The SC BS of control.

Step b, MRN (Mobile Relay node, mobile relay node) start, MR CP (Mobile Relay Control Plane, mobile relay chain of command unit) the first macro base station is accessed, and core net is registered to, obtain the configuration of MRN Information.

Step c, the first macro base station returns to the list of the SC BS by service is provided for MRN to MR CP.

Step d, MR CP preserve SC BS lists, and scan D2D broadcast messages, when MR CP scannings to the SC BS in list When, indicate to set up D2D connections to MR UP (Mobile Relay User Plane, mobile relay user plane unit).

Step e, MR UP sends confirmation message to MR CP.

Step f, MR UP sends D2D communication requests to specified SC BS, and IP address requesting distribution and D2D are connected and set up.

After step g, SC BS receive D2D communication requests, received message is returned to, the IP address of the MR UP is distributed in carrying. MRN starts to send system broadcasts, so far, MRN start completions to compartment；

MRN is considered as base station by step h, the terminal UE in compartment, by MR CP core network access, sets up NAS signaling company Connect, NAS connections are transparent to the first macro base station；

Step i, UE are connected by the user plane that MR UP are set up to core net, and SC BS turn into intermediate router.

So, mobile relay is placed on bullet train, SC BS lay on ground along railway；In downlink, SC BS sending signals first pass through mobile relay, and each UE is then reached again；In up-link, user's sending signal is first reached in movement After being then forwarded to SC BS by mobile relay again.By rationally laying the mobile relay on train, bullet train can be avoided Influence of the car body penetration loss to transmission performance.

Based on the above-mentioned network architecture, the embodiment of the present invention provides a kind of radio communication method for building up stream based on mobile relay Journey schematic diagram, shown in Figure 7, specifically implementation method includes：

Step 101, mobile relay is set up chain of command and is connected by the first macro base station and core net, and the chain of command connection is used Chain of command information transfer is provided in the terminal for the access mobile relay.

Step 102, the mobile relay is set up user plane and is connected with the first small base station scanned, the user plane connection For providing user plane information transmission to access the terminal of the mobile relay.

When mobile relay is made up of MR CP and MR UP, in step S101, MR CP pass through the first macro base station and core Heart net sets up chain of command connection, and MR CP scannings carry out the broadcast message of base station from childhood, when MR CP scannings are to the first small base station, leads to Know that MR UP set up user plane and are connected with the first small base station.It should be noted that in the embodiment of the present invention MR CP support first with The NAS agreements that the control function (such as AMF or MMF) of core net is communicated, as shown in figure 8, in embodiments of the present invention, it is right The function of MRN is strengthened so that MRN can parse the RRC information of UE, and the NAS message that will be carried in RRC information is further It is encapsulated into the NAS of oneself transmission message, such as in UPLINK NAS TRANSPORT message.Control function (the example of core net Such as AMF or MMF) receive the NAS transmission message of MRN after, parse the internal layer NAS message of its carrying, and internal layer NAS message is carried out Treatment.

In addition, the protocol stack of the D2D connections between MR UP and SC BS is as shown in figure 9, PC5-U is supported from PHY to IP Protocol layer；When MR UP provide service as base station to UE, MR UP need to support the tunnel protocol of UP, such as GTP-U agreements.For The user face data of UE is encapsulated into tunnel protocol unit, MR UP need to support to parse the pay(useful) load of PDCP bags, and to this Pay(useful) load is packaged.SC BS now as the router of IP, are only completed and forward a packet to the data received from D2D connections The user plane functions of core net, that is, realize transparent transmission function.

Specifically, MR CP set up process that chain of command is connected as shown in Figure 10 by the first macro base station and core net, specifically Process is as follows：

Step 201, MR CPP send registration request (or attach request) and arrive core net control function (AMF or MMF).

Step 202, MMF obtains the CAMEL-Subscription-Information of MR CPP, judges whether the MR CPP as mobile relay, and can hold Row security process, for example, authenticate and authorize.After the completion of for MR CPP distribute temporary mark.

Step 203, MMF returns to registration reply message to MR CP, carries the temporary mark of distribution, and the message is connect by NG2 The message of mouth is sent to the first macro base station, then is forwarded to MR CP by the first macro base station.

Step 204, the first macro base station judges its actually mobile relay node of the MR CP according to the message of NG2 interfaces, Therefore while transmitted response message is to MR CPP, the list of the SC BS for being controlled is sent to MR CPP, specific SC BS List can be made up of, or the ID of SC BS is constituted the mark that the first macro base station is SC BS distribution temporarily, in composition During the list of SC BS, the first macro base station moving characteristic (such as movement side further according to network design feature and mobile relay To and speed) determine which SC BS included, and SC BS put in order, for example：For scene shown in Figure 11, the first grand base The SC BS lists that MR CP are handed down at station are AP1->AP3->AP5->AP6.MR CP receive the message that the first macro base station sends, and disappear NAS layers of registration reply message is carried in breath and service the mark of the SC BS of this MRN.

Step 205, the first macro base station sends D2D configuration informations after SC BS lists are distributed to the SC BS in list, Indicate these SC BS to receive the D2D communication requests of the MR CPP, in specific implementation, the temporary mark of mobile relay can be believed Breath (such as RNTI) is sent to these SC BS.

Step 206, these SC BS preserve the information, and will monitor the D2D connection foundation requests that the mobile relay is sent.

Further, except the method for the small base station of determination first shown in Figure 10, MR CP can also independently select first small Base station, i.e. the mobile relay scans the broadcast message of small base station；According to the signal intensity of the small base station scanned, from scanning To the small base station for belonging to small base station information set in select the first small base station, wherein, the small base station information collection is combined into institute State the first macro base station and be sent to all of small base station information under first macro base station of the mobile relay in advance；The movement Relaying is set up user plane and is connected with the described first small base station.As shown in figure 12, idiographic flow is as follows.

The SC BS lists of all of Along Railway are sent to step I, the first macro base station the MR for being deployed in headstock first CP；

The D2D broadcast messages of step II, MR CP scannings SC BS, MR CP determine whether the SC BS for scanning are receiving In SC BS lists, if selecting wherein certain SC BS by signal intensity in, MR CP, and the MR UP and SC BS are set up D2D connection；

Step III, MR CP decides whether to carry out according to the signal intensity of the current SC BS for providing D2D Connection Services The gravity treatment of SC BS, if desired, then MR CP are again from the one SC BS of selection in the SC BS for scanning, and set up D2D connections. When carrying out SC BS selections, MR CP need to consider scanning to the sequencing and signal intensity of SC BS.

Step IV, MR CP is it is determined that after the SC BS that will set up D2D connections, also report the ID of selected SC BS To the first macro base station so that the first macro base station can configure corresponding SC BS, connect to set up with the D2D for receiving follow-up MR UP and ask Ask.

Further, after the first small base station is determined, mobile relay is set up D2D and is connected with the first small base station, specifically Ground, the mobile relay sends D2D connections and sets up request to the described first small base station, and the D2D connections are set up in request and included The mark and IP address type information of the mobile relay；

The IP address that the mobile relay is distributed according to the described first small base station is set up D2D and is connected with the described first small base station Connect, wherein, the IP address is that request generation is set up in the described first small base station according to D2D connections.As shown in figure 13, D2D sets up process and comprises the following steps in detail：

Step 301, D2D broadcast messages of the MR CP according to the SC BS tab sequentials scanning correlation SC BS for receiving.

Step 302, after scanning is to a SC BS, will notify that MR UP set up and is connected with the D2D of the SC BS.

Step 303, after MR UP are notified, send D2D connections and sets up request to corresponding SC BS to SC BS, carries The temporary mark of MR UP, IP address type etc..

Step 304, after SC BS receive D2D connection foundation requests, checks whether the temporary mark of the MR UP allows to set up D2D communications (allow list) according to the MR UP for preserving.

Step 305, if it is allowed, then completing D2D establishment of connections for MR UP distribute IP address；

Step 306, MR UP obtain IP address, are returned to MR CP and are successfully established response, and keep connecting with the D2D of SC BS Connect.

Further, because wireless network architecture provided in an embodiment of the present invention is mainly used under high-speed mobile environment, So mobile relay operationally constantly switches small base station, so the embodiment of the present invention further provides mobile relay from One small base station is switched to the process of the second small base station, specifically, the small base station information that the mobile relay is provided according to macro base station Carry out the scanning of small base station；The small base station information and signal intensity that the mobile relay is based on macro base station offer are small from what is scanned The second small base station is selected in base station；The mobile relay is set up user plane and is connected with the described second small base station.

Hereafter by the interaction figure shown in Figure 14, the handoff procedure to small base station is illustrated.

Step 401, according to the sequential scan SC BS in SC BS lists, after finding the 2nd SC BS, MR CP are indicated MR CP MR UP set up new D2D and are connected with the 2nd SC BS；

Step 402, MR UP and the 2nd SC BS set up D2D connections, and obtain new IP address from the 2nd SC BS；

Step 403, MR UP are returned to MR CP and responded, and carry the new IP address for obtaining；

Step 404, MR CP are that MR UP distribute new DL F-TEID (Down Link according to the IP address of MR UPP Full Qualified Tunnel Endpoint Identifier, wholly-owned lattice downlink tunnel port-mark), wherein, herein for Control plane distributes F-TEID, if supporting user plane distribution F-TEID, has MR UP to distribute F-TEID, is then returned to MR CP。

Step 405, MR CP send new information and are forwarded to SMF through AMF/MMF, carry old DL F-TEID and new distribution DL F-TEID；

Step 406, SMF is updated to newly assigned DL F-TEID using the former DL F-TEID in user plane, now descending Data will be sent to MR UP by the 2nd SC BS.Before downlink tunnel is updated, UPF need to send stop flag on former tunnel Indicate.

Step 407, SMF to MR CP return update response message, if wherein SMF determine need to carry out the reorientation of UPF, Then SMF needs the new UL F-TEID of distribution, and returns in the response message.

Step 408, if UL F-TEID change, MR CP also need to configure MR UP, using in newly assigned renewal Row transmission tunnel, after MR UP receive stop flag instruction, will delete former tunnel, enable new tunnel.

In addition, the mobile relay is set up before being connected with the described second small base station, also include：The mobile relay is being swept When retouching the second small base station, the mark of the described second small base station is sent to the macro base station for controlling the described second small base station, So that the macro base station issues configuration message to the described second small base station, the configuration message is used to indicate the mobile relay to have It is standby that the authority being connected is set up with the described second small base station.That is, macro base station can send D2D configuration informations to the 2nd SC BS, These SC BS are indicated to receive the D2D connection requests of the MR UP.

Further, because wireless network architecture provided in an embodiment of the present invention is mainly used under high-speed mobile environment, So mobile relay operationally constantly switches macro base station, specifically, the mobile relay is forwarded to first macro base station The measurement report that UE is reported；When the measurement report meet impose a condition when, the mobile relay from first macro base station Switch to the second macro base station, second macro base station is the first macro base station to be selected according to the measurement report of UE.

Hereafter by the interaction figure shown in Figure 15, the handoff procedure to macro base station is illustrated.

Step 501, MR CP provide measurement report according to normal cellular network measurement report flow to the macro base station of source first Accuse；

Step 502, the first macro base station determines to perform switching according to measurement report, therefore triggers the first macro base station and second grand Switching flow between base station；

Step 503, MR CP are synchronized to the second macro base station, because MR CP do not have user plane to connect, the second macro base station only to Core net updates control plane connection.

Step 504, the second macro base station provides SC BS lists after the confirmation message for receiving core net to MR CP, and The temporary mark of MRN is provided to the SC BS in list；

Step 505, according to the sequential scan SC BS in SC BS lists, after finding new SC BS, MR CP are indicated MR CP The D2D that MR UP are set up to new SC BS is connected；

Subsequent step is similar to the step 402 in Figure 15 steps to step 408.

The mobile relay receives the upstream data that UE is sent by empty port load-supporting；

The mobile relay determines the up tunnel in the corresponding transmission tunnel of the empty port load-supporting according to default mapping relations Road Endpoint ID, and to be forwarded to core by the transmission tunnel after the upstream data addition uplink tunnel Endpoint ID Heart net.

The mobile relay determines to eat dishes without rice or wine to hold according to default mapping relations by the purpose IP address of the downlink data Carry, and the downlink data is sent on the corresponding UE of the purpose IP address by the empty port load-supporting.

Wherein, the default mapping relations are set up as follows：

Hereafter by the interaction figure shown in Figure 16, the handoff procedure to macro base station is illustrated.

Step 601, UE sends PDU connection requests to MR CP；

Be encapsulated into PDU connection requests in UPLINK NAS TRANSPORT message and be sent to MMF by step 602, MR CP；

Step 603, MMF decapsulations, is the discovery that session management messages, then be forwarded to SMF；

Step 604, SMF sets up session according to PDU connection requests, selects user plane UPF, is UE distribution IP address, if Tunnel is not set up between MR UP and UPF, then the uplink tunnel Endpoint ID UL F- in SMF or UPF distributing users face tunnel TEID (Up Link Full Qualified Tunnel Endpoint Identifier, wholly-owned lattice uplink tunnel port mark Know)；

Step 605, SMF returns to PDU and receives response, and the response message carries the IP address of UE；The message passes through MMF Forwarding, carries in the message of NG2 interfaces, and the message of the NG2 interfaces is used for the transmission tunnel configuration of RAN sides simultaneously, therefore also Carry UE IP address and UL F-TEID；

Step 606, after MR CP receive NG2 message, if MR CP determine not have in user plane tunnel the uplink tunnel end points be UL F-TEID's, then distribute DL F-TEID.Then, MR CP are defined as UE and set up empty port load-supporting, therefore, MR CP are to MR UP Send configuration order, and send the configuration message of eating dishes without rice or wine that carrying PDU sets up received message to UE.MR CP are sent to matching somebody with somebody for MR UP Order is put to be mainly used in：

Set up empty port load-supporting；Lead to the uplink tunnel of UPF according to UL F-TEID and UE IP configurations, and determine and up sky The mapping that mouthpiece is carried；The downlink tunnel of UPF to MR UP is configured according to DL F-TEID and UE IP, and determination is held with downlink space interface The mapping of load.

Step 607, MR CP complete MR UP with postponing, return to confirmation message to SMF, carry DL F-TEID；

Step 608, SMF configuration UPF, carries UL and DL F-TEID, UE IP address, completes tunnel building, also, UPF UE IP address and DL F-TEID are bound, the mapping of downlink data and transmission tunnel is completed.

Step 609, after UE receives PDU session received messages, goes to the synchronizing process of MR UP, completes empty port load-supporting Set up.

By above-mentioned steps, the foundation of the PDU sessions of UE is completed, now, the upstream data of UE is sent out by empty port load-supporting It is sent to, MR UP；Because ascending idle port carries the mapping relations with multipair the 1 of transmission tunnel, MR UP can directly by upstream data Stamp UL F-TEID and forward.When the downlink data that UPF has the UE is reached, UPF will enter according to the purpose IP address of packet The mapping of row downlink tunnel, and downlink data is stamped into DL F-TEID be sent to MR UP；After MR UP receive the downlink data, Purpose IP address further according to packet are needed to determine that downlink space interface is carried, then by the downlink data packet from corresponding descending Empty port load-supporting is sent on UE.

So, special GW is not had to serve MRN in the embodiment of the present invention in core net, the UPF in network is as general Logical UE provides the user plane anchor point of service, and network can carry out the reorientation of UPF according to the rule of anchor point gravity treatment；Mobile relay without Substantial amounts of cell measurement and report need to be carried out；UPF functions to core net need not enhancing.

Based on identical technology design, the embodiment of the present invention also provides a kind of network equipment, on the network equipment is executable State embodiment of the method.The network equipment provided in an embodiment of the present invention is as shown in figure 17, including chain of command unit 701, user plane list Unit 702, wherein：

Chain of command unit 701, is connected for setting up chain of command by the first macro base station and core net, the chain of command connection For providing chain of command information transfer to access the UE of the network equipment；

User plane unit 702, is connected for setting up user plane with the first small base station scanned, and the user plane connection is used User plane information transmission is provided in the UE for the access network equipment.

The chain of command unit 701, after receiving the up NAS signaling message that UE sends, by the control The up NAS signaling message is sent to the core net by face connection；

The user plane unit 702, specifically for being received under the core net transmission by the chain of command After row NAS signaling message, the NAS signaling message is sent to the UE.

Further, the chain of command unit 701 is additionally operable to：Sending registration to core net by first macro base station please Ask；Receive the registration reply message of the core net generation that first macro base station sends.

Further, the chain of command unit 701 specifically for：Receive the first macro base station transmission is the net Network equipment provides the small base station information list of communication service, wherein, including at least small base station in the small base station information list Mark, and/or small base station puts in order；According to the small base station information list, the in the small base station information list is scanned One small base station.

The chain of command unit 701 specifically for：Scan the broadcast message of small base station；

Further, the chain of command unit 701 specifically for：Sending D2D connection foundation to the described first small base station please Ask, mark and IP address type information comprising the network equipment in request are set up in the D2D connections；

Further, the user plane unit 702 specifically for：The IP address distributed according to the described first small base station and institute State the first small base station and set up D2D connections, wherein, the IP address is that the described first small base station please according to D2D connection foundation Seek survival.

Further, the chain of command unit 701 specifically for：Scanning carrys out the broadcast message of base station from childhood；

The user plane unit 702 specifically for：When the chain of command unit arrives the first small base station in scanning, lead to Know that the user plane unit is set up user plane and is connected with the described first small base station.

Further, the chain of command unit 701 is additionally operable to：Small base station is carried out according to the small base station information that macro base station is provided Scanning；The small base station information and signal intensity provided based on macro base station select the second small base station from the small base station scanned；

The user plane unit 702, is additionally operable to set up user plane with the described second small base station and is connected.

Further, the chain of command unit 701 is additionally operable to：

Further, the chain of command unit 701, is additionally operable to：To the measurement report that first macro base station forwarding UE is reported Accuse；

Further, the chain of command unit 701, is additionally operable to：

Further, the user plane unit 702, is additionally operable to：Transmitting tunnel using the new user plane is carried out up and down Row data transfer；

Further, the user plane unit 702, is additionally operable to：

After the instruction message of the end mark that the user plane unit for receiving the core net sends, it is determined to use New user plane transmission tunnel carries out downlink data transmission.

Further, the user plane unit 702, specifically for：Receive UE and the up of transmission is carried by ascending idle port Data；According to default mapping relations, determine that the ascending idle port carries the uplink tunnel Endpoint ID in corresponding transmission tunnel, And to be forwarded to core net by the transmission tunnel after the upstream data addition uplink tunnel Endpoint ID.

Further, the user plane unit 702, specifically for：The core net is received by transmitting what tunnel sent Downlink data；According to default mapping relations, determine that downlink space interface is carried by the purpose IP address of the downlink data, and will The downlink data is carried by the downlink space interface and is sent on the corresponding UE of the purpose IP address.

Further, the chain of command unit 701, specifically for：Receive IP address that the core net sends and up Tunnel End Point Identifier, the IP address and uplink tunnel Endpoint ID are that the core net is institute according to the PDU connection requests of UE State the IP address of UE distribution and the uplink tunnel Endpoint ID in transmission tunnel；

In sum, the embodiment of the present invention is to improve the network capacity under the communication scenes of high-speed mobile, using 5G The network architecture that with user plane separate of chain of command, i.e., chain of command provides wireless coverage by the macro base station of support low frequency, and user Face provides wireless coverage by the small base station of support high frequency, and mobile relay is then disposed ON TRAINS, and the mobile relay has control Face unit MR CP processed and user plane unit MR UP, wherein chain of command function are mainly AMF (or MMF) foundation with core net Normal NAS signaling connection；And the user plane functions of mobile relay are then to set up D2D with SC BS to be connected.So, mobile relay Control plane wireless coverage and user plane wireless coverage just can be provided by nematic in-car simultaneously, when mobile-relay station is placed in height On fast train, dissemination channel environment geo-stationary between each user and mobile relay or move slowly at, number higher can be supported According to speed rates.

The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.

These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or The function of being specified in multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.

, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent Select embodiment and fall into having altered and changing for the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising these changes and modification.

Claims

1. a kind of radio communication method for building up based on mobile relay, it is characterised in that the method includes：

Mobile relay is set up chain of command and is connected by the first macro base station and core net, and the chain of command is connected to described to access The UE of mobile relay provides chain of command information transfer；

The mobile relay is set up user plane and is connected with the first small base station scanned, and the user plane is connected to access institute The UE for stating mobile relay provides user plane information transmission.

2. the method for claim 1, it is characterised in that when mobile relay sets up control by the first macro base station with core net After face connection processed, also include：

After the mobile relay receives the up NAS signaling message that UE sends, connected the up NAS by the chain of command Signaling message is sent to the core net；

The mobile relay, will after the chain of command receives the descending NAS signaling message that the core net sends The NAS signaling message is sent to the UE.

3. the method for claim 1, it is characterised in that the mobile relay is set up by the first macro base station with core net Chain of command is connected, including：

4. the method for claim 1, it is characterised in that the mobile relay sets up use with the first small base station scan Family face connects, including：

The mobile relay receives the small base station letter that communication service is provided for the mobile relay that first macro base station sends Breath list, wherein, put in order including at least the mark of small base station, and/or small base station in the small base station information list；

The mobile relay is according to the small base station information list, scanning to the first small base station in the small base station information list When, set up user plane with the described first small base station and be connected.

5. the method for claim 1, it is characterised in that the mobile relay sets up use with the first small base station scan Family face connects, including：

The mobile relay scans the broadcast message of small base station；

According to the signal intensity of the small base station scanned, selected from the small base station for belonging to small base station information set scanned First small base station, wherein, the small base station information collection is combined into the institute that first macro base station is sent to the mobile relay in advance State all of small base station information under the first macro base station；

6. the method as described in claim 4 or 5, it is characterised in that the mobile relay and the described first small base station are set up and used Family face connects, including：

The mobile relay sends D2D connections and sets up request to the described first small base station, and the D2D connections are set up in request and included The mark and IP address type information of the mobile relay；

The mobile relay is set up D2D and is connected according to the IP address that the described first small base station is distributed with the described first small base station, its In, the IP address is that request generation is set up in the described first small base station according to D2D connections.

7. the method as described in any one of claim 1 to 5, it is characterised in that the mobile relay is small with first for scanning User plane connection is set up in base station, including：

When the chain of command unit of the mobile relay arrives the first small base station in scanning, the use of the mobile relay is notified Family face unit is set up user plane and is connected with the described first small base station.

8. the method for claim 1, it is characterised in that the mobile relay sets up user plane with the described first small base station After connection, also include：

The mobile relay is based on the small base station information that macro base station provides and signal intensity selects the from the small base station scanned Two small base stations；

9. method as claimed in claim 8, it is characterised in that the mobile relay is set up with the described second small base station and is connected it Before, also include：

The mark of the described second small base station is sent described to control by the mobile relay when scanning is to the second small base station The macro base station of the second small base station, so that the macro base station issues configuration message to the described second small base station, the configuration message is used Possesses the authority set up with the described second small base station and be connected in the instruction mobile relay.

10. method as claimed in claim 8, it is characterised in that the small base station letter that the mobile relay is provided according to macro base station Before breath carries out the scanning of small base station, also include：

When the measurement report meets to impose a condition, the mobile relay is grand with second from being switched to first macro base station Base station, second macro base station is that the first macro base station is selected according to the measurement report of UE.

11. methods as claimed in claim 8, it is characterised in that the mobile relay sets up user with the described second small base station After the connection of face, also include：

The mobile relay is initiated transmission tunnel and updates request to the core net, described to update request for setting up by described The new user plane transmission tunnel of the second small base station.

12. methods as claimed in claim 11, it is characterised in that the mobile relay initiates transmission tunnel to the core net Update after request, also include：

After the mobile relay determines that transmitting tunnel using new user plane carries out downlink data transmission, the mobile relay is deleted Except original transmits tunnel by the user plane of the first small base station.

13. methods as claimed in claim 12, the mobile relay transmits tunnel and carries out up and down using the new user plane Before row data transfer, also include：

The mobile relay receive the core net user plane unit send end mark instruction message after, it is determined that Tunnel can be transmitted using new user plane carries out downlink data transmission.

14. the method for claim 1, it is characterised in that the mobile relay sets up user with the described first small base station After the connection of face, also include：

The mobile relay determines that the ascending idle port carries the up tunnel in corresponding transmission tunnel according to default mapping relations Road Endpoint ID, and to be forwarded to core by the transmission tunnel after the upstream data addition uplink tunnel Endpoint ID Heart net.

15. the method for claim 1, it is characterised in that the mobile relay sets up user with the described first small base station After the connection of face, also include：

The mobile relay determines that downlink space interface holds according to default mapping relations by the purpose IP address of the downlink data Carry, and the downlink data is sent on the corresponding UE of the purpose IP address by downlink space interface carrying.

16. method as described in claims 14 or 15, it is characterised in that the transmission tunnel is the shared node ranks of many UE Tunnel, and the ascending idle port carry and the transmission tunnel be many-to-one relationship.

17. method as described in claims 14 or 15, it is characterised in that the default mapping relations are as follows Set up：

The mobile relay receives IP address and the uplink tunnel Endpoint ID that the core net sends, the IP address and up Tunnel End Point Identifier is the core net according to the IP address and transmit the upper of tunnel that the PDU connection requests of UE are that the UE is distributed Row Tunnel End Point Identifier；

The ascending idle port carrying that the mobile relay configures the UE is held with the downlink space interface of uplink tunnel Endpoint ID, the UE Carry the IP address and the mapping relations of downlink tunnel Endpoint ID with the UE.

18. a kind of network equipments, it is characterised in that the network equipment includes：

Chain of command unit, is connected for setting up chain of command by the first macro base station and core net, the chain of command be connected to for The UE for accessing the network equipment provides chain of command information transfer；

User plane unit, is connected for setting up user plane with the first small base station scanned, and the user plane is connected to connect The UE for entering the network equipment provides user plane information transmission.

19. network equipments as claimed in claim 18, it is characterised in that also include：

The chain of command unit, after receiving the up NAS signaling message that UE sends, being connected by the chain of command will The up NAS signaling message is sent to the core net；

The user plane unit, specifically for receiving the descending NAS letters that the core net sends by the chain of command After making message, the NAS signaling message is sent to the UE.

20. network equipments as claimed in claim 19, it is characterised in that the chain of command unit is additionally operable to：By described One macro base station sends registration request to core net；Receive the registration response of the core net generation that first macro base station sends Message.

21. network equipments as claimed in claim 18, it is characterised in that the chain of command unit specifically for：Receive described The small base station information list that communication service is provided for the network equipment that first macro base station sends, wherein, the small base station letter The mark of small base station is comprised at least in breath list, and/or small base station puts in order；According to the small base station information list, scanning The first small base station in the small base station information list.

22. network equipments as claimed in claim 18, it is characterised in that the chain of command unit specifically for：

Scan the broadcast message of small base station；

According to the signal intensity of the small base station scanned, selected from the small base station for belonging to small base station information set scanned First small base station, wherein, the small base station information collection is combined into the institute that first macro base station is sent to the network equipment in advance State all of small base station information under the first macro base station.

23. network equipment as described in claim 21 or 22, it is characterised in that the chain of command unit specifically for：

D2D connections being sent to the described first small base station and setting up request, the D2D connections are set up and the network equipment is included in request Mark and IP address type information；

The user plane unit specifically for：The IP address distributed according to the described first small base station is set up with the described first small base station D2D is connected, wherein, the IP address is that request generation is set up in the described first small base station according to D2D connections.

24. network equipment as described in any one of claim 18 to 22, it is characterised in that the chain of command unit is specifically used In：Scanning carrys out the broadcast message of base station from childhood；

The user plane unit specifically for：When the chain of command unit arrives the first small base station in scanning, notify described User plane unit is set up user plane and is connected with the described first small base station.

25. network equipments as claimed in claim 18, it is characterised in that the chain of command unit is additionally operable to：According to macro base station The small base station information for providing carries out the scanning of small base station；Based on macro base station provide small base station information and signal intensity from scanning to Small base station in select the second small base station；

26. network equipments as claimed in claim 25, it is characterised in that the chain of command unit is additionally operable to：

When scanning is to the second small base station, the mark of the described second small base station is sent to controlling the described second small base station Macro base station, so that the macro base station issues configuration message to the described second small base station, the configuration message is used to indicate the net Network equipment possesses the authority set up with the described second small base station and be connected.

27. network equipments as claimed in claim 25, it is characterised in that the chain of command unit, are additionally operable to：To described first The measurement report that macro base station forwarding UE is reported；

When the measurement report meets to impose a condition, switched to and the second macro base station, described the from first macro base station Two macro base stations are that the first macro base station is selected according to the measurement report of UE.

28. network equipments as claimed in claim 25, it is characterised in that the chain of command unit, are additionally operable to：

Transmission tunnel is initiated to the core net update request, it is described to update request for setting up by the described second small base station New user plane transmission tunnel.

29. network equipments as claimed in claim 28, it is characterised in that the user plane unit, are additionally operable to：Using described new User plane transmission tunnel carry out up-downgoing data transfer；

After it is determined that carrying out downlink data transmission using new user plane transmission tunnel, the former user by the first small base station is deleted Transmit tunnel in face.

30. network equipments as claimed in claim 29, the user plane unit is additionally operable to：

After the instruction message of the end mark that the user plane unit for receiving the core net sends, it is determined to using new User plane transmission tunnel carries out downlink data transmission.

31. network equipments as claimed in claim 18, it is characterised in that the user plane unit, specifically for：UE is received to lead to Cross ascending idle port and carry the upstream data for sending；According to default mapping relations, determine that the ascending idle port carries corresponding biography The uplink tunnel Endpoint ID in defeated tunnel, and for the upstream data is added after the uplink tunnel Endpoint ID by the biography Defeated tunnel is forwarded to core net.

32. network equipments as claimed in claim 18, it is characterised in that the user plane unit, specifically for：Receive described Core net is by transmitting the downlink data that tunnel sends；According to default mapping relations, by the purpose IP of the downlink data Address determines that downlink space interface is carried, and the downlink data is sent into the purpose IP address by downlink space interface carrying On corresponding UE.

33. network equipment as described in claim 31 or 32, it is characterised in that the transmission tunnel is the shared nodes of many UE The tunnel of rank, and it is many-to-one relationship that the ascending idle port is carried with the transmission tunnel.

34. network equipment as described in claim 31 or 32, it is characterised in that the chain of command unit, specifically for：Receive IP address and uplink tunnel Endpoint ID that the core net sends, the IP address and uplink tunnel Endpoint ID are the core Heart net is the UE IP address distributed and the uplink tunnel Endpoint ID for transmitting tunnel according to the PDU connection requests of UE；

The downlink tunnel Endpoint ID in the IP address distribution transmission tunnel according to itself；Configure the UE ascending idle port carry with Uplink tunnel Endpoint ID, the downlink space interface of the UE carry the mapping with the IP address and downlink tunnel Endpoint ID of the UE Relation.