CN104969653B

CN104969653B - The method for building up and equipment of wireless backhaul link

Info

Publication number: CN104969653B
Application number: CN201380002072.3A
Authority: CN
Inventors: 曹振臻; 万蕾; 熊新; 陈卓
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-04-07
Filing date: 2013-04-07
Publication date: 2019-07-26
Anticipated expiration: 2033-04-07
Also published as: CN104969653A

Abstract

The present invention provides a kind of method for building up of wireless backhaul link and equipment.This method comprises: the second access network equipment is connect with the control plane that the first access network equipment establishes wireless backhaul；Second access network equipment receives the measurement report that first access network equipment is sent, and switching request is sent to first access network equipment according to the measurement report, the switching request is used to indicate first access network equipment and carries out the control plane of wireless backhaul and the separation in user face；Second access network equipment receives the handoff response that first access network equipment is sent, and the handoff response is to send after first access network equipment carries out the control plane of wireless backhaul and the separation in user face.The embodiment of the present invention realizes the user face of wireless backhaul and the separation of control plane.

Description

The method for building up and equipment of wireless backhaul link

Technical field

The present embodiments relate to the method for building up and equipment of the communication technology more particularly to a kind of wireless backhaul link.

Background technique

In order to cope with the growth of mobile data services flow, operator proposes the scene of small station deployment.High-density deployment Small station brings difficulty to operator deployment wire-line back haul (backhaul) network, therefore considers that small station uses wirelessly Backhaul link, i.e. small station are connected by Radio Link with core net.These are connected by Radio Link with core net small Station is properly termed as wireless relay nodes (Relay Node, RN), the mobile management entity (Mobile of RN and core net Management Entity, MME) or gateway (Serving Gateway, S-GW) communicate when, host base station (Donor ENodeB, DeNB) it can be used as the agent node of MME or S-GW, RN is communicated by DeNB with MME or S-GW.RN and DeNB is logical It can may be multi-hop for single-hop, single-hop refers to that RN directly establishes Radio Link with DeNB, and multi-hop refers to that RN passes through it when letter Its RN and DeNB establish Radio Link.

In the prior art, under multi-hop scene, the control plane (i.e. S1-MME plane) of the backhaul of RN and user face is (i.e. S1-U plane) it is unseparated, it can it is control plane and user face is all single-hop or control plane and user face is all more It jumps.But if both using multi-hop mode, the signalling delay of control plane is larger, influences system performance；If two Person uses single-hop mode, and the data transmission efficiency in user face is poor.

Summary of the invention

In view of this, the embodiment of the invention provides a kind of method for building up of wireless backhaul link and equipment, to solve The user face of wireless backhaul does not separate caused problem with control plane in the prior art.

In a first aspect, providing a kind of wireless backhaul link method for building up, comprising:

Second access network equipment is connect with the control plane that the first access network equipment establishes wireless backhaul；

Second access network equipment receives the measurement report that first access network equipment is sent, and according to the measurement Report to first access network equipment send switching request, the switching request be used to indicate first access network equipment into The control plane of row wireless backhaul and the separation in user face；

Second access network equipment receives the handoff response that first access network equipment is sent, and the handoff response is It is sent after the control plane of the first access network equipment progress wireless backhaul and the separation in user face.

With reference to first aspect, in the first possible implementation of the first aspect, second access network equipment is It is used to indicate the access network equipment that first access network equipment carries out the switching of user face；

The switching request is user plane path switching request；

It is described that switching request is sent to first access network equipment according to the measurement report, comprising:

It is determined according to the measurement report and the user face of wireless backhaul is switched to the from second access network equipment On three access network equipments；

It determines after being switched in the user face of wireless backhaul on third access network equipment from second access network equipment, User plane path switching request is sent to first access network equipment, described the is included in the user plane path switching request The information of three access network equipments, so as to first access network equipment according to the information of the third access network equipment to described Three access network equipments send user plane path switching request and receive the user plane path that the third access network equipment is sent and cut Change response.

The possible implementation of with reference to first aspect the first, in second of possible implementation of first aspect In, after the handoff response for receiving the first access network equipment transmission, the method also includes:

Second access network equipment sends instruction message to the third access network equipment, and the instruction message is for referring to Show that the third access network equipment is the agent node of gateway S-GW, so as to third access network equipment forwarding described the One access network equipment and user face data between the second access network equipment.

The possible implementation of with reference to first aspect the first, in the third possible implementation of first aspect In, described the is included in the user plane path switching request that first access network equipment is sent to the third access network equipment The IP address of one access network equipment, so as to the third access network equipment according to the IP address of first access network equipment and The third access network equipment establishes institute for the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI that first access network equipment distributes The mapping relations between the IP address of the first access network equipment and the C-RNTI of first access network equipment are stated, so as to described Three access network equipments forward between first access network equipment and second access network equipment according to the mapping relations User face data.

With reference to first aspect, in a fourth possible implementation of the first aspect, second access network equipment is It is used to indicate the access network equipment that first access network equipment carries out control plane switching；

The switching request is control plane path switching request；

It is determined according to the measurement report and the control plane of wireless backhaul is switched to the from second access network equipment On three access network equipments；

It determines after being switched to the control plane of wireless backhaul on third access network equipment from second access network equipment, Control plane path switching request is sent to first access network equipment, described the is included in the switching request of the control plane path The information of three access network equipments, so as to first access network equipment according to the information of the third access network equipment to described Three access network equipments send control plane path switching request and receive the user plane path that the third access network equipment is sent and cut Change response.

The 4th kind of possible implementation with reference to first aspect, in the 5th kind of possible implementation of first aspect In, the third access network equipment is also used to the agent node as mobile management entity MME；And

The third access network equipment is also used to determine the node that second access network equipment is separated as user face, or Person determines the node that non-second access network equipment is separated as user face according to the measurement report of first access network node.

Second aspect provides a kind of method for building up of wireless backhaul link, comprising:

First access network equipment is connect with the control plane that the second access network equipment establishes wireless backhaul；

First access network equipment sends measurement report to second access network equipment, and receives second access The switching request that net equipment is sent, the switching request is that second access network equipment is sent according to the measurement report；

First access network equipment carries out the control plane of wireless backhaul and the separation in user face according to the switching request, And handoff response is sent to the access network equipment after isolation.

In conjunction with second aspect, in the first possible implementation of the second aspect, second access network equipment is It is used to indicate the access network equipment that first access network equipment carries out the switching of user face；

The switching request is user plane path switching request, includes the third in the user plane path switching request The information of access network equipment, the user plane path switching request are that second access network equipment is true according to the measurement report It is fixed that the user face of wireless backhaul is switched to rear transmission on third access network equipment from second access network equipment；

First access network equipment carries out the control plane of wireless backhaul and the separation in user face according to the switching request, Include:

First access network equipment is sent out according to the information of the third access network equipment to the third access network equipment It send user plane path switching request and receives the user plane path handoff response that the third access network equipment is sent.

In conjunction with the first possible implementation of second aspect, in second of possible implementation of second aspect In, after the handoff response also makes second access network equipment receive the handoff response, the access of Xiang Suoshu third Net equipment sends instruction message, and the instruction message is used to indicate the agency that the third access network equipment is gateway S-GW Node, so that the third access network equipment forwards the use between first access network equipment and second access network equipment Family face data.

In conjunction with the first possible implementation of second aspect, in the third possible implementation of second aspect In, described the is included in the user plane path switching request that first access network equipment is sent to the third access network equipment The IP address of one access network equipment, so as to the third access network equipment according to the IP address of first access network equipment and The third access network equipment establishes institute for the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI that first access network equipment distributes The mapping relations between the IP address of the first access network equipment and the C-RNTI of first access network equipment are stated, so as to described Three access network equipments forward between first access network equipment and second access network equipment according to the mapping relations User face data.

In conjunction with second aspect, in the fourth possible implementation of the second aspect, second access network equipment is It is used to indicate the access network equipment that first access network equipment carries out control plane switching；

The switching request is control plane path switching request, is accessed in the switching request of the control plane path comprising third The information of net equipment, the control plane switching request are that second access network equipment will be wireless according to the measurement report determination What the control plane of backhaul was sent after being switched on third access network equipment from second access network equipment；

First access network equipment is sent out according to the information of the third access network equipment to the third access network equipment It send control plane path switching request and receives the user plane path handoff response that the third access network equipment is sent.

In conjunction with the 4th kind of possible implementation of second aspect, in the 5th kind of possible implementation of second aspect In, the third access network equipment is also used to the agent node as mobile management entity MME；And

The third aspect, provides a kind of access network equipment, and the access network equipment is the second access network equipment, the equipment Include:

Processor, the control plane for establishing wireless backhaul with the first access network equipment are connect；

Transceiver, the measurement report sent for receiving first access network equipment, and according to the measurement report to First access network equipment sends switching request, and the switching request is used to indicate first access network equipment and carries out wirelessly The control plane of backhaul and the separation in user face；

The transceiver is also used to receive the handoff response that first access network equipment is sent, and the handoff response is institute It states after the first access network equipment carries out the control plane of wireless backhaul and the separation in user face and sends.

In conjunction with the third aspect, in the first possible implementation of the third aspect, second access network equipment is It is used to indicate the access network equipment that first access network equipment carries out the switching of user face；

The switching request is user plane path switching request；

The transceiver sends switching request to first access network equipment according to the measurement report, comprising:

In conjunction with the first possible implementation of the third aspect, in second of possible implementation of the third aspect In, the transceiver is also used to:

After receiving the handoff response that first access network equipment is sent, Xiang Suoshu third access network equipment sends instruction Message, the instruction message is used to indicate the agent node that the third access network equipment is gateway S-GW, so as to described Third access network equipment forward first access network equipment and user face data between the second access network equipment.

In conjunction with the first possible implementation of the third aspect, in the third possible implementation of the third aspect In, described the is included in the user plane path switching request that first access network equipment is sent to the third access network equipment The IP address of one access network equipment, so as to the third access network equipment according to the IP address of first access network equipment and The third access network equipment establishes institute for the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI that first access network equipment distributes The mapping relations between the IP address of the first access network equipment and the C-RNTI of first access network equipment are stated, so as to described Three access network equipments forward between first access network equipment and second access network equipment according to the mapping relations User face data.

In conjunction with the third aspect, in the fourth possible implementation of the third aspect, second access network equipment is It is used to indicate the access network equipment that first access network equipment carries out control plane switching；

The switching request is control plane path switching request；

In conjunction with the 4th kind of possible implementation of the third aspect, in the 5th kind of possible implementation of the third aspect In, the third access network equipment is also used to the agent node as mobile management entity MME；And

Fourth aspect, provides a kind of access network equipment, and the access network equipment is the first access network equipment, the equipment Include:

Processor, the control plane for establishing wireless backhaul with the second access network equipment are connect；

Transceiver for sending measurement report to second access network equipment, and receives second access network equipment The switching request of transmission, the switching request are that second access network equipment is sent according to the measurement report；

The transceiver is also used to carry out the control plane of wireless backhaul and the separation in user face according to the switching request, and Handoff response is sent to the access network equipment after isolation.

In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, second access network equipment is It is used to indicate the access network equipment that first access network equipment carries out the switching of user face；

The transceiver carries out the control plane of wireless backhaul and the separation in user face according to the switching request, comprising:

In conjunction with the first possible implementation of fourth aspect, in second of possible implementation of fourth aspect In, after the handoff response also makes second access network equipment receive the handoff response, the access of Xiang Suoshu third Net equipment sends instruction message, and the instruction message is used to indicate the agency that the third access network equipment is gateway S-GW Node, so that the third access network equipment forwards the use between first access network equipment and second access network equipment Family face data.

In conjunction with the first possible implementation of fourth aspect, in the third possible implementation of fourth aspect In, described the is included in the user plane path switching request that first access network equipment is sent to the third access network equipment The IP address of one access network equipment, so as to the third access network equipment according to the IP address of first access network equipment and The third access network equipment establishes institute for the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI that first access network equipment distributes The mapping relations between the IP address of the first access network equipment and the C-RNTI of first access network equipment are stated, so as to described Three access network equipments forward between first access network equipment and second access network equipment according to the mapping relations User face data.

In conjunction with fourth aspect, in the fourth possible implementation of the fourth aspect, second access network equipment is It is used to indicate the access network equipment that first access network equipment carries out control plane switching；

In conjunction with the 4th kind of possible implementation of fourth aspect, in the 5th kind of possible implementation of fourth aspect In, the third access network equipment is also used to the agent node as mobile management entity MME；And

Through the above technical solutions, the measurement report that the second access network equipment can be sent according to the first access network equipment, It indicates that the first access network equipment carries out the control plane of wireless backhaul and the separation in user face, the control plane of wireless backhaul may be implemented With the separation in user face, the control plane of wireless backhaul in the prior art and user face is avoided not to separate caused problem, Jin Erke To reduce the transmission delay of wireless backhaul control plane, the efficiency of transmission in wireless backhaul user face is improved.

Detailed description of the invention

To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for this For the those of ordinary skill of field, without any creative labor, it can also be obtained according to these attached drawings other Attached drawing.

Fig. 1 is a kind of flow diagram of the method for building up of wireless backhaul link provided in an embodiment of the present invention；

Fig. 2 is the flow diagram of the method for building up of another wireless backhaul link provided in an embodiment of the present invention；

Fig. 3 is the flow diagram of the method for building up of another wireless backhaul link provided in an embodiment of the present invention；

Fig. 4 is the flow diagram of the method for building up of another wireless backhaul link provided in an embodiment of the present invention；

Fig. 5 is the flow diagram of the method for building up of another wireless backhaul link provided in an embodiment of the present invention；

Fig. 6 is a kind of structural schematic diagram of access network equipment provided in an embodiment of the present invention；

Fig. 7 is the structural schematic diagram of another access network equipment provided in an embodiment of the present invention.

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

Fig. 1 is a kind of flow diagram of the method for building up of wireless backhaul link provided in an embodiment of the present invention, comprising:

11: the second access network equipments are connect with the control plane that the first access network equipment establishes wireless backhaul；

Wherein, the access network equipment in the embodiment of the present invention can be specially evolution base station (evolved NodeB, eNB), RN, DeNB, micro-base station (Micro), femto base station (Pico) or femto base station (Femto) etc..

First access network equipment refers to that the endpoint being connected by wireless backhaul link with core net, the second access network equipment are Refer to the website of non-endpoint of the wireless backhaul link in access net.For example, RN passes through DeNB and core network communications, and RN and DeNB Between be single-hop transmission when, the first access network equipment refers to that RN, the second access network equipment refer to DeNB；Alternatively, when RN passes through DeNB and core network communications, and the path between RN and DeNB be multi-hop when, such as the first RN by the 2nd RN communicated with DeNB when, Second access network equipment can refer to DeNB or may be the 2nd RN.

12: second access network equipment receives the measurement report that first access network equipment is sent, and according to described Measurement report sends switching request to first access network equipment, and the switching request is used to indicate the first access net and sets The separation of the standby control plane for carrying out wireless backhaul and user face；

Optionally, the separation in the control plane of above-mentioned wireless backhaul and user face may include: to be switched in user face separately On one access network equipment；Alternatively, control plane is switched on another access network equipment.That is,

Corresponding user face switching, second access network equipment are to be used to indicate first access network equipment to carry out user The access network equipment of face switching；For example, the first access network equipment refers to the first RN, the second access under above-mentioned multi-hop scene Net setting refers to DeNB；First RN establishes control plane with DeNB and connect, and DeNB can indicate that the first RN switches user face later Onto the 2nd RN.

At this point, switching request is user plane path switching request.It is understood that the user plane path switching request Title is also possible to other titles, is used to indicate the first access network equipment and switches for user face.Also, in specific embodiment When, which can be newly-increased message, or be also possible to increase cell newly in existing message, with Complete the instruction to the first access network equipment.

At this point, described send switching request to first access network equipment according to the measurement report, comprising:

Above-mentioned user face switching can make the user face of the wireless backhaul after switching be multi-hop transmission in access net, For example, can be DeNB under above-mentioned multi-hop scene and indicate that user face is switched on the 2nd RN by the first RN from DeNB.Or Person,

Corresponding control plane switching, second access network equipment are to be used to indicate first access network equipment to be controlled The access network equipment of face switching；For example, the first access network equipment refers to the first RN, the second access under above-mentioned multi-hop scene Net setting refers to the 2nd RN；First RN establishes control plane with the 2nd RN and connect, and the 2nd RN can indicate that the first RN will be controlled later Face is switched on DeNB.

At this point, the switching request is control plane path switching request.It is understood that control plane path switching is asked The title asked is also possible to other titles, is used to indicate the first access network equipment and switches for control plane.Also, specific real When applying, which can be newly-increased message, or be also possible to increase letter newly in existing message Member, to complete the instruction to the first access network equipment.

Above-mentioned control plane switching can make propagation delay time of the control plane of the wireless backhaul after switching in access net The propagation delay time in netting is being accessed less than the control plane of the wireless backhaul before switching, for example, can be under above-mentioned multi-hop scene 2nd RN indicates that control plane is switched on DeNB by the first RN from the 2nd RN, and the control plane after allowing for switching in this way is single-hop , reduce propagation delay time.It is understood that above-mentioned reduction propagation delay time is not limited to the control plane path so that after switching For single-hop, as long as guaranteeing that the propagation delay time in the control plane path after switching is less than the propagation delay time before switching, for example, may be used also Transmission hop count to be control plane path after switching is less than the transmission hop count before switching, e.g., switches preceding first RN and passes through three jumps DeNB is reached, then the first RN after switching can be made by double bounce to reach DeNB；Alternatively, can also be the control plane after switching Before the transmission hop count in path is identical as the transmission hop count before switching, but the propagation delay time in the control plane path after switching is less than switching Control plane path propagation delay time, for example, preceding first RN of switching passes through the 2nd RN and DeNB progress control plane transmission, it is assumed that the Propagation delay time when one RN carries out control plane transmission by the 3rd RN and DeNB is carried out less than the first RN by the 2nd RN and DeNB Propagation delay time when control plane transmits is communicated by the 3rd RN with DeNB then control plane path can be switched to the first RN.

13: second access network equipment receives the handoff response that first access network equipment is sent, and the switching is rung It should be what first access network equipment send after the control plane of wireless backhaul and the separation in user face.

User face is switched, after the switching of user face, the second access network equipment can indicate that third access network equipment is made For the agent node of S-GW, alternatively, the second access network equipment can also determine itself agent node as S-GW.That is,

Optionally, after the handoff response for receiving the first access network equipment transmission, the method also includes:

Second access network equipment sends instruction message to the third access network equipment, and the instruction message is for referring to Show that the third access network equipment is the agent node of S-GW, so as to third access network equipment forwarding the first access net Equipment and user face data between the second access network equipment.

Alternatively,

Optionally, the user plane path switching request that first access network equipment is sent to the third access network equipment In include first access network equipment IP address, so that the third access network equipment is according to first access network equipment IP address and the third access network equipment be first access network equipment distribution Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Cell Radio Network Temporary Identity, C-RNTI) establishes the IP address of first access network equipment Mapping relations between the C-RNTI of first access network equipment, so that the third access network equipment is according to the mapping Relationship forwards the user face data between first access network equipment and second access network equipment.

Control plane is switched, after control plane switching, agent node of the third access network equipment as MME, at this point, the Second access network equipment can be determined as the node of user face separation by three access network equipments, alternatively, third access network equipment The node that other access network equipments are separated as user face can be determined according to the measurement report that the first access network equipment reports. That is,

The third access network equipment is also used to the agent node as MME；And

Correspondingly, the process that the first access network equipment executes may refer to Fig. 2, comprising:

21: the first access network equipments are connect with the control plane that the second access network equipment establishes wireless backhaul；

22: first access network equipment sends measurement report to second access network equipment, and receives described second The switching request that access network equipment is sent, the switching request is that second access network equipment is sent according to the measurement report 's；

23: first access network equipment carries out the control plane of wireless backhaul and point in user face according to the switching request From, and handoff response is sent to the access network equipment after isolation.

Optionally, second access network equipment is to be used to indicate first access network equipment to carry out the switching of user face Access network equipment；

Optionally, after the handoff response also makes second access network equipment receive the handoff response, to The third access network equipment sends instruction message, and it is S-GW's that the instruction message, which is used to indicate the third access network equipment, Agent node, so that the third access network equipment forwards between first access network equipment and second access network equipment User face data.

Optionally, the user plane path switching request that first access network equipment is sent to the third access network equipment In include first access network equipment IP address, so that the third access network equipment is according to first access network equipment IP address and the third access network equipment be that the C-RNTI of first access network equipment distribution establishes described first and connects Mapping relations between the IP address of log equipment and the C-RNTI of first access network equipment, so that the third accesses net Equipment forwards the user face number between first access network equipment and second access network equipment according to the mapping relations According to.

Alternatively,

Optionally, second access network equipment is to be used to indicate first access network equipment to carry out control plane switching Access network equipment；

First access network equipment carries out the control plane of wireless backhaul and the separation in user face according to the switching request, It include: that first access network equipment is controlled according to the information of the third access network equipment to third access network equipment transmission Face path processed switching request simultaneously receives the user plane path handoff response that the third access network equipment is sent.

Optionally, the third access network equipment is also used to the agent node as MME；And

In the present embodiment, the measurement report that the second access network equipment can be sent according to the first access network equipment, instruction the One access network equipment carries out the control plane of wireless backhaul and the separation in user face, and control plane and the user of wireless backhaul may be implemented The separation in face avoids the control plane of wireless backhaul in the prior art and user face from not separating caused problem, and then can reduce The transmission delay of wireless backhaul control plane improves the efficiency of transmission in wireless backhaul user face.

The embodiment of the present invention, which can be applied, to be connect in multihop access network device context, that is, access net including at least three Log equipment.Specifically, in the embodiment of the present invention, access network equipment may include the first RN, the 2nd RN and DeNB, DeNB with Core net connection.

In the prior art, the control plane of wireless backhaul and user face can all be single-hops in access net, i.e. the first RN The connection of control plane and user face is directly established with DeNB, but can be asked in this way due to the link-quality between the first RN and DeNB The problem inscribed and cause user plane data transfer efficiency poor；Alternatively, the control plane of wireless backhaul and user face are in access net It can all be multi-hop, i.e. the first RN establishes the connection with the 2nd RN, and the 2nd RN establishes the connection with DeNB, the first RN and DeNB Between the transmission of control plane and the transmission in user face require to be forwarded by the 2nd RN, at this point, due to need the 2nd RN It is forwarded, it will increase the transmission delay of control plane, reduce system performance.

For this purpose, proposition of the embodiment of the present invention separates the user face of wireless backhaul and control plane, user face is using more Jump set is defeated, and data transmission efficiency can be improved, and control plane uses the lower path transmission of time delay, reduces transmission delay.

In specific embodiment, it can be the first RN and establish single-hop with DeNB first and connect, be later switched to user face On 2nd RN, so that the transmission of user face is switched to multi-hop from single-hop.Connect alternatively, being also possible to the first RN and being established first with the 2nd RN It connects, control plane is switched on DeNB later, so that control plane transmission is switched to single-hop from multi-hop.After particular content may refer to Continuous embodiment.

It is understood that subsequent embodiment to be for being double bounce between access network equipment, and accessing net includes the first RN, the For two RN and DeNB, still, the present invention is not limited to above-mentioned multi-hop scenes, for example, can be at least three between access network equipment It jumps, as long as at this point, guarantee that the time delay in the control plane path after switching is less than the control plane propagation delay time before switching, and it is unlimited In single-hop, above-mentioned associated description specifically may refer to；In addition, access network equipment is also not necessarily limited to above-mentioned RN and DeNB, for it Its equipment, such as eNB, pico can also refer to execute.

Fig. 3 is the flow diagram of the method for building up of another wireless backhaul link provided in an embodiment of the present invention, this reality It applies in example, first establishes after single-hop connection and user face is switched to multi-hop, and the agent node that specified 2nd RN is S-GW.This reality Applying example includes:

301: the one RN select a DeNB and establish RRC company with the DeNB of selection according to the DeNB list received It connects.

302:DeNB configures the RRC connection of the first RN, including measuring configuration.First RN completes the attachment (attach) of relaying Process, and complete the configuration of the first RN.

303: the one RN foundation is connect with the control plane of DeNB, i.e. S1-MME connection.

304: the one RN send measurement report to DeNB.

Whether 305:DeNB judges whether to switch the connection in user face according to measurement report, that is, need to cut in user face It changes on the 2nd RN, if so, executing 306, otherwise, user face is kept to use single-hop transmission user face data later on DeNB.

For example, the channel quality for other RN that the first RN can detecte can be carried in measurement report, if a certain RN Channel quality better than DeNB channel quality or a certain RN channel quality be better than a certain threshold value, then may determine that by User face is switched on the RN, and other RNs of the channel quality better than DeNB are properly termed as the 2nd RN.It is understood that first The node that RN is detected is not limited to RN, or eNB, micro, pico etc..

306:DeNB sends user plane path switching request (S1-U Path Switch request) to the first RN, the use It include the information of the 2nd RN in the switching request of family face path.

The information of 2nd RN can be specially the 2nd RN cell ID (cell ID) and/or, the IP address of the 2nd RN.

It is understood that the user plane path switching request can be other titles, newly-increased message specifically can be Corresponding instruction information can also be increased by existing message.

307: the one RN establish RRC with the 2nd RN and connect according to the information of the 2nd RN.

308: the one RN send user plane path switching request to the 2nd RN, and receive the user plane path that the 2nd RN is sent Handoff response.

First RN is sent in the user plane path switching request of the 2nd RN the cell ID and/or IP that can carry DeNB The information such as address.

First RN can identify the switching of S1-U transmission path after receiving the user plane path handoff response that the 2nd RN is sent Onto the 2nd RN.

309: the one RN send user plane path handoff response to DeNB, to show that the first RN and the 2nd RN is successfully established S1-U transmission channel.

310:DeNB indicates that the 2nd RN is the agent node of core net.

Wherein it is possible to be during UE is connected to the first RN and is adhered to (Attach), DeNB can pass through to 2nd RN establishes GTP-C Create session, to indicate the 2nd RN as the agent node of MME or S-GW.

Later, the transmission path in user face may is that

UE ← → the first RN ← → the 2nd RN ← → DeNB ← → core net.

For the present embodiment by establishing after single-hop connect in the first RN and DeNB, user face is switched to the 2nd RN by the first RN On, the separation of control plane Yu user face may be implemented, control plane is connected using single-hop, and user face is connected using multi-hop, can be dropped The delay of low control plane transmission, improves the data transmission efficiency in user face.

Fig. 4 is the flow diagram of the method for building up of another wireless backhaul link provided in an embodiment of the present invention, this reality It applies in example, first establishes after single-hop connection and user face is switched to multi-hop, and DeNB is the agent node of S-GW.The present embodiment packet It includes:

401: the one RN select a DeNB and establish RRC company with the DeNB of selection according to the DeNB list received It connects.

402:DeNB configures the RRC connection of the first RN, including measuring configuration.First RN completes the attachment (attach) of relaying Process, and complete the configuration of the first RN.

403: the one RN foundation is connect with the control plane of DeNB, i.e. S1-MME connection.

404: the one RN send measurement report to DeNB.

Whether 405:DeNB judges whether to switch the connection in user face according to measurement report, that is, need to cut in user face It changes on the 2nd RN, if so, executing 406, otherwise, user face is kept to use single-hop transmission user face data later on DeNB.

406:DeNB sends user plane path switching request (S1-U Path Switch request) to the first RN, the use It include the information of the 2nd RN in the switching request of family face path.

407: the one RN establish RRC with the 2nd RN and connect according to the information of the 2nd RN.

408: the one RN send user plane path switching request to the 2nd RN, and receive the user plane path that the 2nd RN is sent Handoff response.

First RN is sent in the user plane path switching request of the 2nd RN the cell ID and/or IP that can carry DeNB The information such as address.In addition, also carrying the IP address of the first RN in the user face switching request unlike a upper embodiment.

409: the one RN send user plane path handoff response to DeNB, to show that the first RN and the 2nd RN is successfully established S1-U transmission channel.

410: the two RN establish the first RN according to the C-RNTI that the IP address of the first RN and the 2nd RN are the first RN distribution IP address and the first RN C-RNTI between mapping relations, later, user face transmit when, the 2nd RN according to the mapping close User face data between system the first RN and DeNB of forwarding.

Different from a upper embodiment, the present embodiment is using DeNB as agent node, between the first RN and the 2nd RN Transmission need according to the C-RNTI of the first RN, and the transmission between the 2nd RN and DeNB needs the IP address according to the first RN, Therefore, need to save above-mentioned mapping relations in the 2nd RN to complete data forwarding.

In the present embodiment, during UE is connected to the first RN and is adhered to (Attach), DeNB is not necessarily to second RN establishes GTP-C Create session.

Later, the transmission path in user face may is that

UE ← → the first RN ← → the 2nd RN ← → DeNB ← → core net.

Fig. 5 is the flow diagram of the method for building up of another wireless backhaul link provided in an embodiment of the present invention, this reality It applies in example, first establishes after multi-hop connection and control plane is switched to single-hop.The present embodiment includes:

501: the one RN include the 2nd RN in the DeNB list according to the DeNB list received, the first RN select this Two RN simultaneously establish RRC with the 2nd RN and connect.

It is understood that the node that the first RN is detected is not limited to RN, or eNB, micro, pico etc..

502: the two RN configure the RRC connection of the first RN, including measuring configuration.First RN completes the attachment of relaying (attach) process, and complete the configuration of the first RN.

503: the one RN foundation is connect with the control plane of the 2nd RN, i.e. S1-MME connection.

504: the one RN send measurement report to the 2nd RN.

Whether 505: the two RN judge whether the connection in switching control face according to measurement report, that is, need control plane It is switched on DeNB, if so, executing 506, otherwise, control plane is kept to use multi-hop transmission control plane number later on the 2nd RN According to.

For example, the channel quality for the DeNB that the first RN can detecte can be carried in measurement report, if it find that should Control plane is switched on the DeNB by wired connection core network access then may determine that by DeNB.

It is understood that the node that the first RN is detected is not limited to DeNB, or RN, eNB, micro, Pico etc..

506: the two RN send control plane path switching request (S1-MME Path Switch request) to the first RN, It include the information of DeNB in the control plane path switching request.

The information of DeNB can be specially DeNB cell ID (cell ID) and/or, the IP address of DeNB.

It is understood that the control plane path switching request can be other titles, newly-increased message specifically can be Corresponding instruction information can also be increased by existing message.

507: the one RN establish RRC with DeNB and connect according to the information of DeNB.

508: the one RN send control plane path switching request to DeNB, and receive the control plane path switching of DeNB transmission Response.

First RN is sent in the control plane path switching request of DeNB the cell ID and/or IP that can carry the 2nd RN The information such as address.

509: the one RN send control plane path handoff response to the 2nd RN.

First RN can disconnect the control plane (S1- with the 2nd RN after sending control plane path handoff response to the 2nd RN MME it) connects.

510: the one RN foundation is connect with the control plane of DeNB, i.e. S1-MME connection.

511: acting on behalf of the process for realizing S1 control plane and the separation of user face as MME according to DeNB, DeNB can be used directly The website that 2nd RN is separated as user face can also select user face to separate website according to the measurement result of RN.

After DeNB is as the agent node of MME, control face data will be transmitted directly between the first RN and DeNB, be realized The single-hop transmission of control plane.

In addition, the first RN includes the 2nd RN's into the control plane path switching request that DeNB is reported when user face switches Information, the first RN can also to DeNB reporting measurement reports, the channel quality that detects in the measurement report comprising the first RN compared with The information of good RN, such as information of the 3rd RN, then DeNB can be made with rule the 2nd RN of selection or the 3rd RN of setting themselves For the website of user face separation.

After selecting the 2nd RN to separate website as user face, the 2nd RN forwards the user face number between the first RN and DeNB According to；Alternatively, the 3rd RN forwards the user face number between the first RN and DeNB after selecting the 3rd RN to separate website as user face According to.

The present embodiment, can by the way that after the first RN and the 2nd RN establish connection, control plane is switched on DeNB by the first RN To realize the separation of control plane Yu user face, control plane is connected using single-hop, and user face is connected using multi-hop, can reduce control The delay of face transmission, improves the data transmission efficiency in user face.

Fig. 6 is a kind of structural schematic diagram of access network equipment provided in an embodiment of the present invention, which can connect for second Log equipment, the equipment 60 include processor 61 and transceiver 62；Processor 61 is used to establish with the first access network equipment wireless The control plane of backhaul connects；Transceiver 62 is used to receive the measurement report that first access network equipment is sent, and according to described Measurement report sends switching request to first access network equipment, and the switching request is used to indicate the first access net and sets The separation of the standby control plane for carrying out wireless backhaul and user face；The transceiver 62 is also used to receive first access network equipment The handoff response of transmission, the handoff response are control plane and the user face that first access network equipment carries out wireless backhaul It is sent after separation.

The switching request is user plane path switching request；

The transceiver 62 sends switching request to first access network equipment according to the measurement report, comprising:

Optionally, the transceiver 62 is also used to:

After receiving the handoff response that first access network equipment is sent, Xiang Suoshu third access network equipment sends instruction Message, the instruction message are used to indicate the agent node that the third access network equipment is S-GW, so as to third access First access network equipment described in net device forwards and user face data between the second access network equipment.

The switching request is control plane path switching request；

It is understood that the access network equipment of the present embodiment can also include memory, antenna, baseband process component, The universal components such as middle radio frequency processing part, input/output unit, no longer any restrictions herein of the embodiment of the present invention.

Fig. 7 is the structural schematic diagram of another access network equipment provided in an embodiment of the present invention, which can be first Access network equipment, the equipment 70 include processor 71 and transceiver 72；Processor 71 is used to establish nothing with the second access network equipment The control plane of line backhaul connects；Transceiver 72 is used to send measurement report to second access network equipment, and receives described the The switching request that two access network equipments are sent, the switching request is that second access network equipment is sent out according to the measurement report It send；The transceiver 72 is also used to carry out the control plane of wireless backhaul and the separation in user face according to the switching request, and Handoff response is sent to the access network equipment after isolation.

The transceiver 72 carries out the control plane of wireless backhaul and the separation in user face according to the switching request, comprising:

It is apparent to those skilled in the art that for convenience and simplicity of description, only with above-mentioned each function The division progress of module can according to need and for example, in practical application by above-mentioned function distribution by different function moulds Block is completed, i.e., the internal structure of device is divided into different functional modules, to complete all or part of function described above Energy.The specific work process of the system, apparatus, and unit of foregoing description, can be with reference to corresponding in preceding method embodiment Journey, details are not described herein.

In several embodiments provided herein, it should be understood that disclosed system, device and method can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the module or The division of unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units Or component can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, institute Display or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit Indirect coupling or communication connection can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.

If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer It is each that equipment (can be personal computer, server or the network equipment etc.) or processor (processor) execute the application The all or part of the steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk Etc. the various media that can store program code.

The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.

Claims

1. a kind of method for building up of wireless backhaul link characterized by comprising

Second access network equipment receives the measurement report that first access network equipment is sent, and according to the measurement report Switching request is sent to first access network equipment, the switching request is used to indicate first access network equipment and carries out nothing The control plane of line backhaul and the separation in user face；

Second access network equipment receives the handoff response that first access network equipment is sent, and the handoff response is described It is sent after the control plane of first access network equipment progress wireless backhaul and the separation in user face.

2. the method according to claim 1, wherein

Second access network equipment is the access network equipment for being used to indicate first access network equipment and carrying out the switching of user face；

The switching request is user plane path switching request；

Determine that the user face of wireless backhaul, which is switched to third from second access network equipment, to be connect according to the measurement report On log equipment；

It determines after being switched in the user face of wireless backhaul on third access network equipment from second access network equipment, to institute It states the first access network equipment and sends user plane path switching request, connect in the user plane path switching request comprising the third The information of log equipment, so that first access network equipment connects according to the information of the third access network equipment to the third Log equipment, which sends user plane path switching request and receives the user plane path switching that the third access network equipment is sent, to be rung It answers.

3. according to the method described in claim 2, it is characterized in that, the switching for receiving first access network equipment and sending After response, the method also includes:

Second access network equipment sends instruction message to the third access network equipment, and the instruction message is used to indicate institute The agent node that third access network equipment is gateway S-GW is stated, so that third access network equipment forwarding described first connects Log equipment and user face data between the second access network equipment.

4. according to the method described in claim 2, it is characterized in that,

Comprising described in the user plane path switching request that first access network equipment is sent to the third access network equipment The IP address of first access network equipment, so as to the third access network equipment according to the IP address of first access network equipment with And the third access network equipment is the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI foundation of first access network equipment distribution Mapping relations between the IP address of first access network equipment and the C-RNTI of first access network equipment, so as to described Third access network equipment forwards between first access network equipment and second access network equipment according to the mapping relations User face data.

5. the method according to claim 1, wherein

Second access network equipment is the access network equipment for being used to indicate first access network equipment and carrying out control plane switching；

The switching request is control plane path switching request；

Determine that the control plane of wireless backhaul, which is switched to third from second access network equipment, to be connect according to the measurement report On log equipment；

It determines after being switched to the control plane of wireless backhaul on third access network equipment from second access network equipment, to institute It states the first access network equipment and sends control plane path switching request, connect in the switching request of the control plane path comprising the third The information of log equipment, so that first access network equipment connects according to the information of the third access network equipment to the third Log equipment, which sends control plane path switching request and receives the user plane path switching that the third access network equipment is sent, to be rung It answers.

6. according to the method described in claim 5, it is characterized in that,

The third access network equipment is also used to the agent node as mobile management entity MME；And

The third access network equipment is also used to determine the node that second access network equipment is separated as user face, alternatively, The node that non-second access network equipment is separated as user face is determined according to the measurement report of first access network node.

7. a kind of method for building up of wireless backhaul link characterized by comprising

First access network equipment sends measurement report to second access network equipment, and receives the second access net and set The switching request that preparation is sent, the switching request are that second access network equipment is sent according to the measurement report；

First access network equipment according to the switching request carry out wireless backhaul control plane and user face separation, and Handoff response is sent to the access network equipment after separation.

8. the method according to the description of claim 7 is characterized in that

The switching request is user plane path switching request, is set in the user plane path switching request comprising third access net Standby information, the user plane path switching request are that second access network equipment will be wireless according to the measurement report determination What the user face of backhaul was sent after being switched on third access network equipment from second access network equipment；

First access network equipment carries out the control plane of wireless backhaul and the separation in user face, packet according to the switching request It includes:

First access network equipment sends to the third access network equipment according to the information of the third access network equipment and uses Family face path switching request simultaneously receives the user plane path handoff response that the third access network equipment is sent.

9. according to the method described in claim 8, it is characterized in that, the handoff response also makes second access network equipment After receiving the handoff response, Xiang Suoshu third access network equipment sends instruction message, and the instruction message is used to indicate The third access network equipment is the agent node of gateway S-GW, so as to third access network equipment forwarding described first User face data between access network equipment and second access network equipment.

10. according to the method described in claim 8, it is characterized in that,

11. the method according to the description of claim 7 is characterized in that

The switching request is control plane path switching request, is set in the switching request of the control plane path comprising third access net Standby information, the control plane switching request are that second access network equipment is determined according to the measurement report by wireless backhaul Control plane be switched to from second access network equipment on third access network equipment after send；

First access network equipment sends to the third access network equipment according to the information of the third access network equipment and controls Face path processed switching request simultaneously receives the user plane path handoff response that the third access network equipment is sent.

12. according to the method for claim 11, which is characterized in that

13. a kind of access network equipment, the access network equipment is the second access network equipment, which is characterized in that the equipment includes:

Transceiver, the measurement report sent for receiving first access network equipment, and according to the measurement report to described First access network equipment sends switching request, and the switching request is used to indicate first access network equipment and carries out wireless backhaul Control plane and user face separation；

The transceiver is also used to receive the handoff response that first access network equipment is sent, and the handoff response is described the It is sent after the control plane of one access network equipment progress wireless backhaul and the separation in user face.

14. equipment according to claim 13, which is characterized in that

The switching request is user plane path switching request；

15. equipment according to claim 14, which is characterized in that the transceiver is also used to:

After receiving the handoff response that first access network equipment is sent, Xiang Suoshu third access network equipment sends instruction and disappears Breath, the instruction message is used to indicate the agent node that the third access network equipment is gateway S-GW, so as to described the Three access network equipments forward first access network equipment and user face data between the second access network equipment.

16. equipment according to claim 14, which is characterized in that

17. equipment according to claim 13, which is characterized in that

The switching request is control plane path switching request；

18. equipment according to claim 17, which is characterized in that

19. a kind of access network equipment, the access network equipment is the first access network equipment, which is characterized in that the equipment includes:

Transceiver for sending measurement report to second access network equipment, and receives second access network equipment and sends Switching request, the switching request is that second access network equipment is sent according to the measurement report；

The transceiver is also used to carry out the control plane of wireless backhaul and the separation in user face according to the switching request, and is dividing Handoff response is sent to the access network equipment from rear.

20. equipment according to claim 19, which is characterized in that

21. equipment according to claim 20, which is characterized in that the handoff response sets the second access net After receiving the handoff response, Xiang Suoshu third access network equipment sends instruction message, and the instruction message is for referring to Show that the third access network equipment is the agent node of gateway S-GW, so as to third access network equipment forwarding described the User face data between one access network equipment and second access network equipment.

22. equipment according to claim 20, which is characterized in that

23. equipment according to claim 19, which is characterized in that

24. equipment according to claim 23, which is characterized in that