CN106034314A - Data transmission method and data transmission device - Google Patents
Data transmission method and data transmission device Download PDFInfo
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- CN106034314A CN106034314A CN201510104577.1A CN201510104577A CN106034314A CN 106034314 A CN106034314 A CN 106034314A CN 201510104577 A CN201510104577 A CN 201510104577A CN 106034314 A CN106034314 A CN 106034314A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
Abstract
The invention discloses a data transmission method and a data transmission device. The data transmission method and the data transmission device are used for realizing transmission node bearing management on condition that a large number of wireless small stations exist and the scene is relatively complicated according to a mapping relationship that is preset according to the service quality of the transmission data, so that a transmission node can normally operate in a network, thereby realizing high-speed data transmission for UE and improving network transmission efficiency. The data transmission method comprises the steps of when data transmission from a local node to a correspondent node is determined, mapping the data which are to be transmitted by the local node to the correspondent node to a load that corresponds with connection between the local node and the correspondent node according to the mapping relationship that is preset according to the service quality of the transmission data, wherein the mapping relationship is used for the load and the transmission data, and the load corresponds with the connection between the local node and the correspondent node; and transmitting the data which are mapped on each load which corresponds with the connection between the local node and the correspondent node to the correspondent node through the load.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of data transmission method and device.
Background technology
In mobile communication system future development, in order to better meet user's request, significant increase network capacity
And handling capacity, more access node will be introduced, i.e. future is super-intensive network.Along with access node
Increase the variation with scene, the little deployment aspect that stands in will face several scenes, and does not has wire-line back haul
Wireless small station also will be a kind of important mode.
In existing mobile communication system LTE system, between the node of network side, mostly carry out wired connection,
See Fig. 1, i.e. connected by wire link between evolved base station (evolved NodeB, eNB), eNB
And core net node, such as Mobility Management Entity (Mobility Management Entity, MME),
Gateways (Serving Gate-Way, SGW) etc., are the most also to take wire link to connect.
In mobile communication system version 10 (R10), system by provide higher peak data rate and
Cell throughout, is also required to bigger bandwidth simultaneously, the unassigned bandwidth of current below 2GHz seldom,
The part or all of bandwidth that rear 3G (Beyond Third Generation, B3G) system needs can only be more
In high frequency range, such as more than 3GHz finds.Frequency range is the highest, radio wave propagation decay the fastest, transmit away from
From the shortest, therefore under same overlay area, it is ensured that cover continuously, need more base station, due to base station
Being generally of higher cost, this can increase cost of arranging net undoubtedly.In order to solve Cost Problems of arranging net, each factory
Business and standardization body begin one's study and are incorporated in cellular system by via node (Relay Node, RN),
Increase and cover.
Fig. 2 is that senior Long Term Evolution (Long Term Evolution Advanced, LTE-A) system introduces
The network architecture after RN, RN is linked into core net by the host community (donor cell) under eNB,
Do not have direct wireline interface, each RN can control one or more community with core net.At this framework
Under, the interface between subscriber equipment (User Equipment, UE) and RN is referred to as Uu mouth, and RN
With the interface between the base station (DeNB) being connected with RN is referred to as Un mouth.
See Fig. 3, between RN and DeNB, there is an X2 interface, DeNB with each other
Having an X2 interface between eNB, these eNB with DeNB have X2 to associate.DeNB process and
Forward the X2 signaling of all UE correlated processes between RN and other eNB.The mistake that all non-UE are relevant
Cheng Jun, between RN and DeNB, processes between DeNB and other eNB.
Data transmission procedure and bearing relation in relaying (Relay) framework: at down direction, issue UE's
IP wraps in packet data network gateway (PDN Gate-Way, the PGW)/SGW of UE and is mapped as the tunnel of UE
Road agreement (GPRS Tunneling Protocol GPRS, GTP) tunnel (tunnel), from UE's
PGW/SGW is sent to Data Radio Bearer (Data Radio Bearer, DRB).DeNB is according to each
Service quality (the Quality of that UE evolved packet system (Evolved Packet System, EPS) carries
Service, QoS) Level Identifier (QoS Class Identifier, QCI) is by UE GTP tunnel mono-
The one RN DRB being mapped as Un mouth, the different UE EPS carrying with identical QCI is mapped to same
On individual RN DRB.The UE DRB that UE GTP tunnel is mapped as on Uu mouth by RN, the number that will receive
UE is issued according to bag.
At up direction, RN with DeNB completes similar carrying mapping function.
QoS mechanism is the critical function of EPS, the machine-processed transmission certain for different business offer of QoS
Validity and reliability ensures, makes user keep good experience in communication process.QoS in EPS
Control is carried out based on carrying.EPS carrying belongs to the category of EPS, external bearer depend on EPS with
Outer system.EPS carrying framework in Relay framework is as shown in Figure 4.EPS between UE to PGW
E-UTRAN Radio Access Bearer (the E-UTRAN Radio Access that carrying is divided between UE to SGW
Bearer, E-RAB) and SGW to PGW between S5/S8 carry two sections.E-RAB can be divided into again
Uu carrying between UE to RN, this is one section of S1 between radio bearer, and RN to SGW
Carrying.After introducing RN, one that EPS carrying is many: RN EPS carries.It is carried setting up UE EPS
Before, RN EPS carrying has generally existed.When RN starts, between RN and DeNB, set up Un carrying,
Also it is one section of radio bearer, (passes including RN signal radio bearer (Signaling Radio Bearer, SRB)
Defeated signaling) and RN DRB (transmission user data).S1 is carried on Un mouth to be needed to be mapped to RN DRB
Upper transmission.
All business data packet mutual for UE with PGW are required for being mapped in corresponding UE EPS carrying
Being transmitted, packet is scheduling by each network element node according to the qos parameter of carrying belonging to business data packet
And transmission.
In sum, in prior art, although the framework of Relay and existing load bearing management method can solve the problem that
A part of wireless small station problem, but traditional Relay framework only supports more static DeNB to select and
Bearer management mode, and RN only supports single-hop single-link wireless backhaul link (Backhaul) access network,
When number more scene in small station is complex, the most either network efficiency or the experience of UE, be all subject to
The restriction of this framework, it is impossible to reach preferably state.For example, it is desired to the wireless little tiny node week of access network
Enclose and not there is an available big bandwidth access node of jumping, or a paths is not sufficient to meet wireless little
The big bandwidth for transmission demand stood, and the frequency spectrum resource in future is the abundantest, the existing relay's of these scenes
Mode all Shortcomings, the most existing wireless small station Backhaul bearer management technology, it is not suitable for a large amount of
Wireless small station exists and scene is compared with the bearer management in wireless small station under complex situations and carrying of communication efficiency
Rise.
Summary of the invention
Embodiments provide a kind of data transmission method and device, in order to according to previously according to transmission number
According to service quality arrange mapping relations, it is achieved a large amount of wireless small stations exist and scene relatively complex situations under pass
The management of the carrying of defeated node so that transmission node (the most wireless small station) can the most normally work,
There is provided data transmission at a high speed for UE, improve network transmission efficiency.
A kind of data transmission method that the embodiment of the present invention provides, including:
When determining that this node needs to send data to peer node, according to the service previously according to transmission data
The mapping relations of quality settings, need the data sent to peer node to be mapped to this node and institute this node
State connecting in corresponding carrying between peer node；Wherein, described mapping relations are that this node is right with described
The carrying connecting correspondence between end node, and the mapping relations of transmission data；
For each carrying that the connection between this node with described peer node is corresponding, will map in this carrying
Data be sent to described peer node by this carrying.
With it, when determining that this node needs to send data to peer node, according to previously according to biography
The mapping relations that the service quality of transmission of data is arranged, need the data sent to peer node to map by this node
In the carrying that the connection between this node with described peer node is corresponding, for this node with described to end segment
The data mapped in this carrying are sent to described by each carrying connecting correspondence between point by this carrying
Peer node, such that it is able to the mapping relations arranged according to the service quality previously according to transmission data, it is achieved
A large amount of wireless small stations exist and scene is compared with the management of the carrying of transmission node under complex situations so that transmission node
(the most wireless small station) can the most normally work, and provides data transmission at a high speed for UE, improves
Network transmission efficiency.
It is preferred that in the upstream direction, described peer node is multihome node, and the most true
This node fixed needs to send data to multihome node: when receiving the upper industry that at least one attachment node sends
During business data, determine this node to need to multihome node and send data；
Wherein, at least there is the carrying that a described multihome node is corresponding, the uplink service that this carrying maps
Data come from different attachment nodes.
The quality of service requirement phase of the uplink business data of different attachment nodes is come from described in it is preferred that
With.
It is preferred that when described peer node has multiple described peer node, the method also comprises determining that this
Connecting between node with the plurality of peer node corresponding each carries corresponding transmission path；
The described each carrying corresponding for the connection between this node with described peer node, by this carrying
The data mapped are sent to described peer node by this carrying, including:
For each carrying that the connection between this node with the plurality of peer node is corresponding, according to this carrying
The data mapped in this carrying are sent to, by this carrying, the transmission that this carrying is corresponding by corresponding transmission path
The peer node that path includes.
By each carrying corresponding for the connection between this node with the plurality of peer node, according to this
The data mapped in this carrying are sent to this carrying by this carrying corresponding by the transmission path that carrying is corresponding
The peer node that transmission path includes so that transmission node can utilize mulitpath multi-hop the most flexibly
Transmission data, improve network transmission efficiency.
It is preferred that when described peer node has multiple described peer node, the method also comprises determining that this
The every of the transmission data of mapping in corresponding each carrying is connected between node with the plurality of peer node
The transmission path that one packet is corresponding；
The described each carrying corresponding for the connection between this node with described peer node, by this carrying
The data mapped are sent to described peer node by this carrying, including:
For the biography mapped in each carrying that the connection between this node with the plurality of peer node is corresponding
Each packet of transmission of data, according to the transmission path that this packet is corresponding, by this packet by these data
The carrying that bag is mapped is sent to the peer node in the transmission path that this packet is corresponding.
By mapping in corresponding each carrying for connecting between this node with the plurality of peer node
Each packet of transmission data, according to the transmission path that this packet is corresponding, by this packet by should
The carrying that packet is mapped is sent to the peer node in the transmission path that this packet is corresponding so that transmission
Node can utilize mulitpath multi-hop transmission data the most flexibly, improves network transmission efficiency.
A kind of data transmission device that the embodiment of the present invention provides, including:
Map unit, for when determine this node need to peer node send data time, according to previously according to
The mapping relations that the service quality of transmission data is arranged, need the data sent to peer node to reflect this node
Be mapped between this node with described peer node connects in corresponding carrying；Wherein, described mapping relations are
Connect corresponding carrying between this node with described peer node, and transmit the mapping relations of data；
Transmission unit, for each carrying corresponding for the connection between this node with described peer node,
The data mapped in this carrying are sent to described peer node by this carrying.
By this device, when determining that this node needs to send data to peer node, according to previously according to biography
The mapping relations that the service quality of transmission of data is arranged, need the data sent to peer node to map by this node
In the carrying that the connection between this node with described peer node is corresponding, for this node with described to end segment
The data mapped in this carrying are sent to described by each carrying connecting correspondence between point by this carrying
Peer node, such that it is able to the mapping relations arranged according to the service quality previously according to transmission data, it is achieved
A large amount of wireless small stations exist and scene is compared with the management of the carrying of transmission node under complex situations so that transmission node
(the most wireless small station) can the most normally work, and provides data transmission at a high speed for UE, improves
Network transmission efficiency.
It is preferred that in the upstream direction, described peer node is multihome node, and described map unit is led to
Cross following steps and determine that this node needs to multihome node transmission data: when receiving at least one attachment node
During the uplink business data sent, determine this node to need to multihome node and send data；
Wherein, at least there is the carrying that a described multihome node is corresponding, the uplink service that this carrying maps
Data come from different attachment nodes.
The quality of service requirement phase of the uplink business data of different attachment nodes is come from described in it is preferred that
With.
It is preferred that when described peer node has multiple described peer node, described transmission unit is additionally operable to:
Determine that connecting between this node with the plurality of peer node corresponding each carries corresponding transmission path；
Described transmission unit is for the corresponding each carrying that connects between this node with described peer node, general
When the data mapped in this carrying are sent to described peer node by this carrying, specifically for:
For each carrying that the connection between this node with the plurality of peer node is corresponding, according to this carrying
The data mapped in this carrying are sent to, by this carrying, the transmission that this carrying is corresponding by corresponding transmission path
The peer node that path includes.
By each carrying corresponding for the connection between this node with the plurality of peer node, according to this
The data mapped in this carrying are sent to this carrying by this carrying corresponding by the transmission path that carrying is corresponding
The peer node that transmission path includes so that transmission node can utilize mulitpath multi-hop the most flexibly
Transmission data, improve network transmission efficiency.
It is preferred that when described peer node has multiple described peer node, described transmission unit is additionally operable to:
Determine the transmission number mapped in each carrying that the connection between this node with the plurality of peer node is corresponding
According to transmission path corresponding to each packet；
Described transmission unit for connecting corresponding each carrying between this node with described peer node,
When the data mapped in this carrying are sent to described peer node by this carrying, specifically for:
For the biography mapped in each carrying that the connection between this node with the plurality of peer node is corresponding
Each packet of transmission of data, according to the transmission path that this packet is corresponding, by this packet by these data
The carrying that bag is mapped is sent to the peer node in the transmission path that this packet is corresponding.
By mapping in corresponding each carrying for connecting between this node with the plurality of peer node
Each packet of transmission data, according to the transmission path that this packet is corresponding, by this packet by should
The carrying that packet is mapped is sent to the peer node in the transmission path that this packet is corresponding so that transmission
Node can utilize mulitpath multi-hop transmission data the most flexibly, improves network transmission efficiency.
Accompanying drawing explanation
Fig. 1 is the network architecture schematic diagram of existing LTE system；
Fig. 2 is the existing E-UTRAN network architecture schematic diagram comprising RN；
Fig. 3 is the network architecture after existing introducing RN and topology schematic diagram；
Fig. 4 is the carrying configuration diagram in the network architecture after existing introducing RN；
The schematic flow sheet of a kind of data transmission method that Fig. 5 provides for the embodiment of the present invention；
The carrying in the first wireless small station that Fig. 6 provides for the embodiment of the present invention constitutes schematic diagram；
The carrying in the wireless small station of the second that Fig. 7 provides for the embodiment of the present invention constitutes schematic diagram；
The carrying in the third wireless small station that Fig. 8 provides for the embodiment of the present invention constitutes schematic diagram；
Fig. 9 carries out a kind of agreement when DRB separates for two Donor nodes that the embodiment of the present invention provides
Stack configuration diagram；
The carrying in the 4th kind of wireless small station that Figure 10 provides for the embodiment of the present invention constitutes schematic diagram；
Figure 11 carries out another kind of association when DRB separates for two Donor nodes that the embodiment of the present invention provides
View stack configuration diagram；
The centralized network architecture schematic diagram that Figure 12 provides for the embodiment of the present invention；
The distributed network architecture schematic diagram that Figure 13 provides for the embodiment of the present invention；
The structural representation of a kind of data transmission device that Figure 14 provides for the embodiment of the present invention；
The structural representation of the another kind of data transmission device that Figure 15 provides for the embodiment of the present invention.
Detailed description of the invention
Embodiments provide a kind of data transmission method and device, in order to according to previously according to transmission number
According to service quality arrange mapping relations, it is achieved a large amount of wireless small stations exist and scene relatively complex situations under pass
The management of the carrying of defeated node so that transmission node (the most wireless small station) can the most normally work,
There is provided data transmission at a high speed for UE, improve network transmission efficiency.
The embodiment of the present invention so that the wireless small station in super-intensive network can be the most connected to the network,
Improving network whole efficiency, ensure the experience of user simultaneously preferably, propose in super-intensive network is wireless
The bearer management scheme in small station, with the two-forty of communication under satisfied future wireless small station scene, high-throughput and
The demand of low time delay, and improve network efficiency.
Wireless small station described in the embodiment of the present invention be finger low-power (occurrence can according to actual needs and
Base station equipment calmly), it does not possess wire link with the connection of network side, but needs to pass through wireless link
Transmission is communicated with network side.
See Fig. 5, a kind of data transmission method that the embodiment of the present invention provides, including step:
S101, when determine this node need to peer node send data time, according to previously according to transmission data
Service quality arrange mapping relations, by this node need to peer node send data be mapped to this section
Point and connecting in corresponding carrying between described peer node；Wherein, described mapping relations be this node with
The carrying connecting correspondence between described peer node, and the mapping relations of transmission data；
S102, for connecting corresponding each carrying, by this carrying between this node with described peer node
The data of upper mapping are sent to described peer node by this carrying.
This node described in the embodiment of the present invention and peer node may each be wireless small station, when this node is
During wireless small station, peer node can be that wireless small station may also be a UE.Specifically, at up direction,
This node is wireless small station, and peer node is wireless small station, and peer node is properly termed as host's joint of this node
Point)；At down direction, this node is wireless small station, and peer node is wireless small station or UE, peer node
It is properly termed as the attachment node of this node.
Wherein, previously according to the mapping relations of the service quality setting of transmission data, can be by service quality
Require that identical or close transmission data are mapped in same carrying.Such as, wireless small station is by under it
The data of the identical qos requirement of UE are mapped in a small station carrying, form the carrying in small station.When first
When having the second wireless small station attachment under wireless small station, the carrying in the second wireless small station of this attachment is also with QoS
Require that the identical mode i.e. mapped is mapped in the carrying in the first wireless small station.
In the upstream direction, described peer node is multihome node, and determines this node as follows
Need to send data to multihome node: when receiving the uplink business data that at least one attachment node sends
Time, determine this node to need to multihome node and send data；
Wherein, at least there is the carrying that a described multihome node is corresponding, the uplink service that this carrying maps
Data come from different attachment nodes.
Wherein, the quality of service requirement of the uplink business data coming from different attachment node described in identical or
Close.
Such as, wireless small station, by the uplink business data from two different UE, converges to this wireless small station
With connecting in a corresponding carrying between multihome node.Wherein, the upper of different UE is come from described in
The quality of service requirement of row business datum is identical.
It is preferred that when the first jumping Backhaul chain in wireless small station route two or more Donor
During node carrying, the carrying in this is wireless small station can be allocated between these Donor nodes, Qi Zhongyi
Being carried on a Donor node transmission, other are carried on the 2nd Donor node transmission, or,
Some data of same carrying are transmitted on a Donor node, and other data are at the 2nd Donor
Transmit on node.
When there is such paths: the first wireless wired small station of the wireless small station of small station<>second<>
<>network, then the Backhaul link between the first wireless small station and the second wireless small station is referred to as first
The first jumping Backhaul link in wireless small station, the attachment that the first wireless small station is referred to as the second wireless small station is little
Standing, the second wireless small station is referred to as the Donor node in the first wireless small station.
Described wired small station is the base station equipment of finger low-power (occurrence can be decided according to the actual requirements),
It possesses wire link with the connection of network side, communicates transmission with network side by wireline pathway, such as
Optical fiber link.
It is thus preferable to, when described peer node has multiple described peer node, the method also includes:
Determine that connecting between this node with the plurality of peer node corresponding each carries corresponding transmission path；
The described each carrying corresponding for the connection between this node with described peer node, by this carrying
The data mapped are sent to described peer node by this carrying, including:
For each carrying that the connection between this node with the plurality of peer node is corresponding, according to this carrying
The data mapped in this carrying are sent to, by this carrying, the transmission that this carrying is corresponding by corresponding transmission path
The peer node that path includes.
Or, when described peer node has multiple described peer node, the method also comprises determining that this section
In each carrying that point is corresponding with the connection between the plurality of peer node, the transmission data of mapping is each
The transmission path that packet is corresponding；
The described each carrying corresponding for the connection between this node with described peer node, by this carrying
The data mapped are sent to described peer node by this carrying, including:
For the biography mapped in each carrying that the connection between this node with the plurality of peer node is corresponding
Each packet of transmission of data, according to the transmission path that this packet is corresponding, by this packet by these data
The carrying that bag is mapped is sent to the peer node in the transmission path that this packet is corresponding.
Enumerate some specific embodiments below.
Embodiment 1:
As shown in Figure 6, below wireless small station, have two connected state UE, i.e. UE1 and UE2, UE1 and
UE2 has the business of two kinds of qos requirements respectively, and UE1 has the first qos requirement business datum and the 2nd QoS
Requiring business datum, UE2 has the first qos requirement business datum and a 3rd qos requirement business datum, and one
In the case of as, on UE access link, carry corresponding with qos requirement.That is for UE1
First qos requirement business correspondence is transmitted on DRB1, and the second qos requirement business is corresponding at DRB2
On be transmitted；And the first qos requirement business correspondence is transmitted on its DRB3 for UE2,
3rd qos requirement business correspondence is transmitted on DRB4.For the access link of UE, each
The DRB of UE is independently numbered and transmits the business belonging to respective UE.
For wireless small station, wireless small station needs to map the data of UE, be unified in its first
Jump and carry out mapping and transmitting on Backhaul link.In simple terms, difference UE is had phase by wireless little standing-meeting
With the business datum of qos requirement, unification is mapped in a wireless small station carrying, such as, by Fig. 6
The first qos requirement business datum of UE1 and the first qos requirement business datum of UE2, all can be mapped
On the DRB5 that first qos requirement in wireless small station is corresponding, and by the industry of second qos requirement of UE1
Business data are mapped on the DRB6 that second qos requirement in wireless small station is corresponding, by the 3rd QoS of UE2
The business datum required is mapped on the DRB7 that the 3rd qos requirement in wireless small station is corresponding.Wherein DRB5,
DRB6 and DRB7 is the carrying connecting correspondence between wireless small station and Donor node.
Seeing Fig. 7, in the case of multi-hop, it is first descended the data of UE according to QoS phase by wireless small station 1
Same principle maps, and forms the wireless small station 1 radio bearer at its first jumping Backhaul link, i.e.
The business datum of the second qos requirement is issued wireless small station 1 by DRB3 by UE2, by DRB4 by
The business datum of three qos requirements issues wireless small station 1, and UE3 passes through DRB5 by the first qos requirement
Business datum issues wireless small station 1, issues wireless little by DRB6 by the business datum of the 3rd qos requirement
Standing 1, wireless small station 1 is by the 3rd qos requirement business datum of UE2 in Fig. 7 and the 3rd QoS of UE3
Require business datum, all can be mapped on the DRB8 that the 3rd qos requirement in wireless small station 1 is corresponding,
And the business datum of second qos requirement of UE2 is mapped to the second qos requirement correspondence in wireless small station 1
DRB9 on, the business datum of first qos requirement of UE3 is mapped to a QoS in wireless small station
Require on corresponding DRB7.DRB7, DRB8 and DRB9 be wireless small station 1 and wireless small station 2 it
Between connect corresponding carrying.
Then, wireless small station 2 needs under it as the Donor node in wireless small station 1, wireless small station 2
The UE1 connected and the carrying in wireless small station 1, also identical according to qos requirement, the principle mapped is reflected
Penetrate, form the wireless small station 2 radio bearer at its first jumping Backhaul link.I.e. UE1 passes through DRB1
The business datum of the first qos requirement is issued wireless small station 2, by DRB2 by the second qos requirement
Business datum issues wireless small station 2, and DRB7 is passed through by the business datum of the first qos requirement in wireless small station 1
Issue wireless small station 2, by DRB8, the business datum of the 3rd qos requirement is issued wireless small station 2, logical
Crossing DRB9 and the business datum of the second qos requirement is issued wireless small station 2, wireless small station 2 will be from UE1
The first qos requirement business datum and from wireless small station 1 the first qos requirement business datum converge
Gather on DRB10, by the business datum of the second qos requirement from UE1 with from wireless small station 1
The business datum of the second qos requirement converges on DRB11, is wanted by the 3rd QoS from wireless small station 1
The business datum asked is mapped on DRB12.Wherein, DRB10, DRB11 and DRB12 are wireless little
The carrying that the connection between 2 and Donor nodes of standing is corresponding.
In the example above, employ QoS identical, the principle mapped, it is true that because of qos parameter relatively
Many and complicated, QoS incomplete same in some cases is the most close, in the case of close, it is possible to
To map.Specifically how to map, after also depending on the DRB value volume and range of product of UE, and mapping
DRB value volume and range of product, can be determined according to actual needs by algorithm.
The DRB in wireless small station sets up and carrying mapping mode, can be by core net corresponding to this wireless small station
Node determines and configures, such as, determined by MME and SGW/PGW and be allocated to wireless small station.Newly
The network architecture in, it is also possible to be managed by the local controller of access network side and configure, the most wireless
Small station can also participate in determining this configuration process.
Embodiment 2: the first is jumped Backhaul carrying between two Donor nodes and is separated.
For wireless small station, its first jumping Backhaul link refers between it and existing network node
Wave point connect, jump path setting up first be connected as wireless small station and network.Of course for more
Good utilizes resource, is scheduling flexibly, however not excluded that the first jumping Backhaul link is by two or two
Wireless path composition more than bar.
As shown in Figure 8, wireless small station is set up even with network side by Donor node 1 and Donor node 2
Connect.This Fig. 8 is a simple example, it is true that two with the situation of two or more Donor node are
It is similar to, can process in an identical manner.When multi-hop, each jumping is all each according to this enforcement
The method of example, is respectively processed.Arbitrary described Donor node, can be macro station, wired small station,
Or wireless small station, it might even be possible to it is UE.The present embodiment, as a example by typical a kind of situation, provides solution party
Method, multi-hop and more multi-link in the case of, as long as being extended according to this solution, no longer
Repeat one by one.
In the example of Fig. 8, the when that being carried on of wireless small station being set up, it is necessary to distinguish for different
Donor node, such as corresponding with the connection between Donor node 1 carrying is DRB1, with Donor
The corresponding carrying that connects between node 2 comprises DRB2 and DRB3.Between carrying and Donor node
Corresponding relation, need display is allocated to wireless small station and the relevant network node (Donor that is such as correlated with joint
Point, network side gateway node etc.) so that the data of corresponding DRB, it is possible to just carrying out according to this corresponding relation
Really transmission, i.e. the data of DRB1 carrying are passed by the path between Donor node 1 and wireless small station
Defeated, the data of DRB2 and DRB3 carrying are carried out by the path between Donor node 2 and wireless small station
Transmission.
For down direction, the data that DRB1 carries can be sent to Donor node 1, by Donor by network
Node 1 is sent to wireless small station；The data that DRB2 and DRB3 carries are sent to Donor node by network
2, Donor node 2 it is sent to wireless small station.For up direction, wireless small station is according to configuring DRB1
The data of carrying are transmitted to network via Donor node 1, the data that DRB2 and DRB3 is carried via
Donor node 2 transmits to network.
Fig. 9 gives Donor node 1 and carries out a kind of protocol stack when DRB separates with Donor node 2
The scheme of framework.Wherein, the protocol stack architecture of Donor node can have a multiple implementation:
Donor node has the protocol stack function of whole layer two and layer one, and Donor node receives IP from network
Packet, such as Donor node protocol stack can include Paket Data Convergence Protocol (Packet Data
Convergence Protocol, PDCP), wireless spread-spectrum technology (Radio Link Control, RLC), matchmaker
Body Access Control (Media Access Control, MAC) and physical layer (Physical Laye, PHY)；
Donor node has RLC and following protocol stack function, and Donor node from what network received is
PDCP protocol Data Unit, such as Donor node protocol stack only includes RLC, MAC and PHY, from
Network directly receives PDCP PDU；
Donor node has MAC and following protocol stack function, and Donor node from what network received is
Rlc protocol data cell, such as Donor node protocol stack only includes MAC and PHY, direct from network
Receive RLC PDU；
Donor node has PHY and following protocol stack function, and Donor node from what network received is
Medium Access Control (MAC) Protocol Data Unit, such as Donor node protocol stack only includes PHY, directly receives from network
MAC PDU；
Donor node only has antenna transmission-receiving function, and what Donor node received from network is through physical layer
The data processed, such as Donor node protocol stack only includes part physical layer function, directly receives from network
Data through physical layer process.
Why need different protocol stack options, because the connected mode of Donor node and network side has
Multiple situation, when having preferable backhaul link therebetween, the little bandwidth of propagation delay time therebetween
Greatly, network side can have the function more focused on data, otherwise, when biography therebetween
When defeated backhaul link is not ideal enough, most data processing function needs to transfer to Donor node and enters
OK.The purpose of do so is fully to take into account the folding that the demands such as centralized optimization, flexible dispatching and propagation delay time are different
Middle process.Concrete protocol stack can configure according to Backhaul characteristic, even allows for there is different choosings
Selecting, such as Donor node 1 and Donor node 2 has different protocol stack types.
Above protocol stack architecture is to illustrate, if it is true that protocol stack becomes as a example by existing agreement
After change, select the process of different protocol stack types according to the Backhaul link property of Donor node
Thinking is still suitable for.
Embodiment 3: the first is jumped the carrying between two Donor nodes of the Backhaul link and is separated.
Similar to Example 2, also jumping Backhaul link with one most typical first in this example has two
The example of Donor node, illustrates transmit respectively in two Donor nodes another of being carried in wireless small station
A kind of mode.Its processing mode can expand in multi-hop, or more multilinked scene easily.
As shown in Figure 10, the when that being carried on of wireless small station being set up, it is required for different Donor joints
Point carries out management respectively, and the such as unlimited corresponding carrying that connects between small station with Donor node 1 includes
DRB1, DRB2 and DRB3, connect corresponding carrying also between unlimited small station with Donor node 2
Including DRB1, DRB2 and DRB3.Wherein, the connection between unlimited small station and each Donor node
The DRB that corresponding carrying includes, need display is allocated to wireless small station with relevant network node (such as
Relevant Donor node, network side GW node etc.) so that the data of corresponding DRB, it is possible to according to
This configuration is correctly transmitted.
For down direction, the data of DRB1, DRB2 and DRB3 are needed according to existing shape by network
State and simple algorithm, determine that concrete data are sent to Donor node 1 or Donor node 2, i.e. base
Concrete transmission path is determined in packet.Decision path when, need to consider the link of different link
Situation, caching situation and disposal ability etc., design object is in order to data are transmitted as early as possible and efficiently.When
After data arrive Donor node, Donor node-node transmission give wireless small station.For up direction, nothing
Line small station can consider in decision DRB1, DRB2 and DRB3 according to dispatch situation and priority etc.
Which packet specifically via which Donor node-node transmission to network, total transmission path is also dynamically certainly
Fixed, and be that granularity based on each packet determines.
The present embodiment has packets need via Donor node 1 in DRB1, DRB2 and DRB3
Be transmitted with Donor node 2, the present embodiment can also in conjunction with the embodiments 2 situation, such as DRB1
With DRB2 has packets need be transmitted via Donor node 1 and Donor node 2, and
In DRB3, all packets only need to be transmitted via Donor node 1 or Donor node 2.
See Figure 11, give two Donor nodes and carry out a kind of protocol stack architecture when DRB separates
Scheme.The feature of this DRB separation scheme is, for each DRB, its higher-layer protocols is mapped in collection
Interior joint, and following protocol stack is separated in two Donor nodes, is beneficial to same DRB's
Data have complete protocol stack to be its service in two Donor nodes.Further, the association of Donor node
View trestle structure can have a following multiple implementation:
Donor node has RLC and following protocol stack function, and Donor node from what network received is
PDCP protocol Data Unit, such as Donor node protocol stack only includes RLC, MAC and PHY, from
Network directly receives PDCP PDU；
Donor node has MAC and following protocol stack function, and Donor node from what network received is
Rlc protocol data cell, such as Donor node protocol stack only includes MAC and PHY, direct from network
Receive RLC PDU；
Donor node has PHY and following protocol stack function, and Donor node from what network received is
Medium Access Control (MAC) Protocol Data Unit, such as Donor node protocol stack only includes PHY, directly receives from network
MAC PDU；
Donor node only has antenna transmission-receiving function, and what Donor node received from network is through physical layer
The data processed, such as Donor node protocol stack only includes part physical layer function, directly receives from network
Data through physical layer process；
Why need different protocol stack options, because the connected mode of Donor node and network side has
Multiple situation, when having preferable backhaul link therebetween, the little bandwidth of propagation delay time therebetween
Greatly, network side can have a function more focused on data, otherwise ought transmission therebetween
When backhaul is not ideal enough, most data processing function needs to transfer to Donor node to be carried out.This
The purpose that sample does is sufficiently to take into account at the compromise that the demands such as centralized optimization, flexible dispatching and propagation delay time are different
Reason.Concrete protocol stack can configure according to Backhaul link property, even allows for there is different choosings
Selecting, such as Donor node 1 and Donor node 2 has different protocol stack types.
Above protocol stack architecture is to illustrate, if it is true that protocol stack becomes as a example by existing agreement
After change, select the process of different protocol stack types according to the Backhaul link property of Donor node
Thinking is still suitable for.
Embodiment 4: the process of different frameworks.
Seeing Figure 12, in centralized network architecture, the home server of access network side is responsible for carrying out this locality
The centralized management of Donor node (i.e. including Donor eNB1 and Donor eNB2).At home server
In, it might even be possible to there are some functions that core net is sunk, the management such as carried, data stream mapping etc., i.e.
The carrying in wireless small station is set up and can be responsible for by home server, and data stream mapping ruler also may be used
To be determined by home server, it is then forwarded to the node being correlated with.It addition, home server is because of permissible
Collect the statistic behavior of its lower website, therefore for Path selection based on packet (similar embodiment 3
Mode) will more optimize, the beneficially transmission path selecting optimum for each packet of centralization.
Seeing Figure 13, the feature of distributed network architecture is to dispose facility, but in distributed network architecture,
Owing to lacking centralized node management and control, can only be that each node is connected respectively to core network entity, i.e. Donor
ENB1 with Donor eNB2 is directly connected with core net respectively, therefore the foundation of DRB and Path selection etc.
Suitable by more static mode, the such as static carrying separate mode shown in embodiment 2.Certainly, the most not
Get rid of distributed structure/architecture uses and dynamically carry separate mode shown in embodiment 3.Two relevant Donor
Interface can be set up between node, transmit a large amount of status information, and ask to GW node and report, request
Or guide data.
In following network, centralized network architecture and distributed network architecture can and be deposited.For implementing
The processing mode that example 2 separates with two kinds of DRB of embodiment 3 can also and be deposited, network select and join
Put, can be local centralized control node for centralized network architecture, decision-making and configuration node, and for
Distributed network architecture, decision-making and configuration can only be carried out by core net node.
See Figure 14, a kind of data transmission device that the embodiment of the present invention provides, including:
Map unit 11, for when determining that this node needs to send data to peer node, according to root in advance
The mapping relations arranged according to the service quality of transmission data, need the data sent to peer node by this node
Be mapped between this node with described peer node connects in corresponding carrying；Wherein, described mapping relations
For the corresponding carrying of connecting between this node with described peer node, and transmit the mapping relations of data；
Transmission unit 12, for corresponding each holding for connecting between this node with described peer node
Carry, the data that this carrying maps are sent to described peer node by this carrying.
It is preferred that in the upstream direction, described peer node is multihome node, and described map unit is led to
Cross following steps and determine that this node needs to multihome node transmission data: when receiving at least one attachment node
During the uplink business data sent, determine this node to need to multihome node and send data；
Wherein, at least there is the carrying that a described multihome node is corresponding, the uplink service that this carrying maps
Data come from different attachment nodes.
The quality of service requirement phase of the uplink business data of different attachment nodes is come from described in it is preferred that
With.
It is preferred that when described peer node has multiple described peer node, described transmission unit is additionally operable to:
Determine that connecting between this node with the plurality of peer node corresponding each carries corresponding transmission path；
Described transmission unit is for the corresponding each carrying that connects between this node with described peer node, general
When the data mapped in this carrying are sent to described peer node by this carrying, specifically for:
For each carrying that the connection between this node with the plurality of peer node is corresponding, according to this carrying
The data mapped in this carrying are sent to, by this carrying, the transmission that this carrying is corresponding by corresponding transmission path
The peer node that path includes.
It is preferred that when described peer node has multiple described peer node, described transmission unit is additionally operable to:
Determine the transmission number mapped in each carrying that the connection between this node with the plurality of peer node is corresponding
According to transmission path corresponding to each packet；
Described transmission unit for connecting corresponding each carrying between this node with described peer node,
When the data mapped in this carrying are sent to described peer node by this carrying, specifically for:
For the biography mapped in each carrying that the connection between this node with the plurality of peer node is corresponding
Each packet of transmission of data, according to the transmission path that this packet is corresponding, by this packet by these data
The carrying that bag is mapped is sent to the peer node in the transmission path that this packet is corresponding.
See Figure 15, the another kind of data transmission device that the embodiment of the present invention provides, including:
Processor 500, for reading the program in memorizer 520, performs following process:
When determining that this node needs to send data to peer node, according to the service previously according to transmission data
The mapping relations of quality settings, need the data sent to peer node to be mapped to this node and institute this node
State connecting in corresponding carrying between peer node；Wherein, described mapping relations are that this node is right with described
The carrying connecting correspondence between end node, and the mapping relations of transmission data；
For the corresponding each carrying that connects between this node with described peer node, control transceiver 510
The data mapped in this carrying are sent to described peer node by this carrying.
It is preferred that in the upstream direction, described peer node is multihome node, and described map unit is led to
Cross following steps and determine that this node needs to multihome node transmission data: when receiving at least one attachment node
During the uplink business data sent, determine this node to need to multihome node and send data；
Wherein, at least there is the carrying that a described multihome node is corresponding, the uplink service that this carrying maps
Data come from different attachment nodes.
The quality of service requirement phase of the uplink business data of different attachment nodes is come from described in it is preferred that
With.
It is preferred that when described peer node has multiple described peer node, described processor 500 is additionally operable to:
Determine that connecting between this node with the plurality of peer node corresponding each carries corresponding transmission path；
Described processor 500 for connecting corresponding each carrying between this node with described peer node,
When the data mapped in this carrying are sent to described peer node by this carrying by control transceiver 510, tool
Body is used for:
For the corresponding each carrying that connects between this node with the plurality of peer node, control transceiver
The data mapped in this carrying, according to transmission path corresponding to this carrying, are sent to this by this carrying by 510
What carrying was corresponding transmits the peer node that path includes.
It is preferred that when described peer node has multiple described peer node, described processor 500 is additionally operable to:
Determine the transmission number mapped in each carrying that the connection between this node with the plurality of peer node is corresponding
According to transmission path corresponding to each packet；
Described processor 500 corresponding each held for connecting between this node with described peer node
Carry, when the data that this carrying maps are sent to described peer node by this carrying by control transceiver 510,
Specifically for:
For the biography mapped in each carrying that the connection between this node with the plurality of peer node is corresponding
Each packet of transmission of data, controls transceiver 510 according to transmission path corresponding to this packet, by this number
The carrying mapped by this packet according to bag be sent in the transmission path that this packet is corresponding to end segment
Point.
Transceiver 510, for receiving under control of the processor 500 and sending data.
Wherein, in fig .15, bus architecture can include bus and the bridge of any number of interconnection, specifically
The various circuit of the memorizer that the one or more processors represented by processor 500 and memorizer 520 represent
Link together.Bus architecture can also be by such as ancillary equipment, manostat and management circuit or the like
Other electrical chains various be connected together, these are all to it is known in the art, therefore, the most no longer to it
It is described further.EBI provides interface.Transceiver 510 can be multiple element, i.e. includes sending out
Send machine and transceiver, it is provided that for the unit communicated with other devices various over a transmission medium.Processor 500
Being responsible for bus architecture and common process, memorizer 520 can store processor 500 and perform operation
Time the data that used.
In sum, in the technical scheme that the embodiment of the present invention provides, it is possible to achieve to wireless small station backhaul chain
The bearer management on road, improves network efficiency so that wireless small station can the most normally work, for UE
High speed data transfer is provided；Further, the Deta bearer of the first jumping Backhaul link in wireless small station can be
Separating between two Donor, the mode of separation has two kinds, and DRB divides discrete data bag to separate, this
Which kind of two ways specifically uses, and can be determined by network configuration, and then can utilize a plurality of the most flexibly
Path multi-hop transmission, further increases network transmission efficiency.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or knot
The form of the embodiment in terms of conjunction software and hardware.And, the present invention can use and wherein wrap one or more
Computer-usable storage medium containing computer usable program code (include but not limited to disk memory and
Optical memory etc.) form of the upper computer program implemented.
The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding
The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating
The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one
The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a data transmission method, it is characterised in that the method includes:
When determining that this node needs to send data to peer node, according to the service previously according to transmission data
The mapping relations of quality settings, need the data sent to peer node to be mapped to this node and institute this node
State connecting in corresponding carrying between peer node；Wherein, described mapping relations are that this node is right with described
The carrying connecting correspondence between end node, and the mapping relations of transmission data；
For each carrying that the connection between this node with described peer node is corresponding, will map in this carrying
Data be sent to described peer node by this carrying.
Method the most according to claim 1, it is characterised in that in the upstream direction, described opposite end
Node is multihome node, and determines that this node needs to multihome node transmission data as follows: when
When receiving the uplink business data that at least one attachment node sends, determine that this node needs to multihome node
Send data；
Wherein, at least there is the carrying that a described multihome node is corresponding, the uplink service that this carrying maps
Data come from different attachment nodes.
Method the most according to claim 2, it is characterised in that described in come from different attachment joint
The quality of service requirement of the uplink business data of point is identical.
Method the most according to claim 1, it is characterised in that when described peer node has multiple institute
When stating peer node, the method also comprises determining that the connection between this node and the plurality of peer node is right
The transmission path of each carrying correspondence answered；
The described each carrying corresponding for the connection between this node with described peer node, by this carrying
The data mapped are sent to described peer node by this carrying, including:
For each carrying that the connection between this node with the plurality of peer node is corresponding, according to this carrying
The data mapped in this carrying are sent to, by this carrying, the transmission that this carrying is corresponding by corresponding transmission path
The peer node that path includes.
Method the most according to claim 1, it is characterised in that when described peer node has multiple institute
When stating peer node, the method also comprises determining that the connection between this node and the plurality of peer node is right
The transmission path that in each carrying answered, each packet of the transmission data of mapping is corresponding；
The described each carrying corresponding for the connection between this node with described peer node, by this carrying
The data mapped are sent to described peer node by this carrying, including:
For the biography mapped in each carrying that the connection between this node with the plurality of peer node is corresponding
Each packet of transmission of data, according to the transmission path that this packet is corresponding, by this packet by these data
The carrying that bag is mapped is sent to the peer node in the transmission path that this packet is corresponding.
6. a data transmission device, it is characterised in that including:
Map unit, for when determine this node need to peer node send data time, according to previously according to
The mapping relations that the service quality of transmission data is arranged, need the data sent to peer node to reflect this node
Be mapped between this node with described peer node connects in corresponding carrying；Wherein, described mapping relations are
Connect corresponding carrying between this node with described peer node, and transmit the mapping relations of data；
Transmission unit, for each carrying corresponding for the connection between this node with described peer node,
The data mapped in this carrying are sent to described peer node by this carrying.
Device the most according to claim 6, it is characterised in that in the upstream direction, described opposite end
Node is multihome node, and described map unit determines that this node needs to multihome node as follows
Send data: when receiving the uplink business data that at least one attachment node sends, determine that this node needs
Data are sent to multihome node；
Wherein, at least there is the carrying that a described multihome node is corresponding, the uplink service that this carrying maps
Data come from different attachment nodes.
Device the most according to claim 7, it is characterised in that described in come from different attachment joint
The quality of service requirement of the uplink business data of point is identical.
Device the most according to claim 6, it is characterised in that when described peer node has multiple institute
When stating peer node, described transmission unit is additionally operable to: determine between this node and the plurality of peer node
Connect the transmission path that corresponding each carrying is corresponding；
Described transmission unit is for the corresponding each carrying that connects between this node with described peer node, general
When the data mapped in this carrying are sent to described peer node by this carrying, specifically for:
For each carrying that the connection between this node with the plurality of peer node is corresponding, according to this carrying
The data mapped in this carrying are sent to, by this carrying, the transmission that this carrying is corresponding by corresponding transmission path
The peer node that path includes.
Device the most according to claim 6, it is characterised in that when described peer node has multiple institute
When stating peer node, described transmission unit is additionally operable to: determine between this node and the plurality of peer node
Connect the transmission path that each packet of the transmission data mapped in corresponding each carrying is corresponding；
Described transmission unit for connecting corresponding each carrying between this node with described peer node,
When the data mapped in this carrying are sent to described peer node by this carrying, specifically for:
For the biography mapped in each carrying that the connection between this node with the plurality of peer node is corresponding
Each packet of transmission of data, according to the transmission path that this packet is corresponding, by this packet by these data
The carrying that bag is mapped is sent to the peer node in the transmission path that this packet is corresponding.
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