CN105763302A - Data transmission method and system based on super cell - Google Patents
Data transmission method and system based on super cell Download PDFInfo
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Abstract
The present invention discloses a data transmission method and system based on a super cell. The system comprises core network equipment, a first base station which is connected to the core network equipment, at least one second base station which is connected to the first base station through an Ethernet link, and a terminal which is connected to the first base station and at least one second base station, wherein the first base station and the second base station carry out data exchange through the Ethernet link. Through the method and the system, the problems of high cost and inflexible architecture of a network architecture in the prior art are solved at least.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of data transmission method based on super cell and system.
Background technology
At present, super cell technology is widely used in high ferro, aerial navigation channel, and super cell is to be made up of multiple CP (CellPortion, cell portion).These CP logically still fall within same community, share common local resource, such as community ID (Identity, identification number), primary and secondary synchronization signals, frequency-hopping sequences, and CRS (CommonReferenceSignal, public reference signal)/DMRS (DemodulationReferenceSignal)/SRS (SoundingReferenceSignal, Sounding Reference Signal) sequence etc..Being absent from ambulant problem between CP different in same super cell, mobility problem is just developed into the detection between a different CP in community and scheduling problem by this.
This technology by multiple independent communities, can be merged into big community in logic, reduces terminal interference and frequently switches.Especially for the super-intensive network (UltraDensityNetwork) that a large amount of base stations form, super cell is very helpful to promoting network KPI (KeyPerformanceIndicator, critical sales index).
Present super cell is generally adopted BBU (BuildingBasebandUnit, baseband processing unit)+RRU (RadioRemoteUnit, Remote Radio Unit) network architecture of networking, in such a mode, the data of original multiple community carry out Combined Treatment, it is jointly processed by the downlink data of RRU or the spaced antenna sending original multiple communities, and from the upstream data that multiple RRU or spaced antenna group come, to reach to improve the purpose of systematic function.
But, adopt the above-mentioned network architecture, owing to being connected by optical fiber link between BBU and RRU, for the LTE (LongTermEvolution for continuous covering design, Long Term Evolution) network, such as microcellulor super-intensive covers (station spacing is 50～100m), city building shade is mended blind, floor and vertically covered and large area covering continuously etc., cost is excessively high, additionally, in actual networking, current scheme can not be taken into account flexibly and cover continuously and focus covering, is unfavorable for network self-organization, affects KPI.
Summary of the invention
The invention provides a kind of data transmission method based on super cell and system, at least to solve network architecture cost height and the inflexible problem of framework in prior art.
According to an aspect of the present invention, provide a kind of data transmission system based on super cell, it is characterized in that, including: equipment of the core network, the first base station being connected with described equipment of the core network, at least one second base station being connected by described ethernet link with described first base station and the terminal being connected with described first base station and at least one second base station described respectively, wherein
Described equipment of the core network, for carrying out data interaction with described first base station；
Described first base station, for carrying out data interaction by described ethernet link with at least one second base station described and described equipment of the core network, and carries out data interaction with described terminal by air interface；
At least one second base station described, for carrying out data interaction by described ethernet link and described first base station, and carries out data interaction with described terminal by described air interface；
Described terminal, for carrying out data interaction by described air interface with described first base station and at least one second base station described.
Preferably, described terminal, for sending upstream data by air interface to described first base station and at least one second base station described；
Described first base station, is used for demodulating described upstream data, obtains the first Physical Uplink Shared Channel PUSCH demodulating data and the first hybrid automatic repeat-request HARQ identifies message；
At least one second base station described, is used for demodulating described upstream data, obtains the 2nd PUSCH demodulating data and the 2nd HARQ identification information, and sends described 2nd HARQ identification information the 2nd PUSCH demodulating data described in buffer memory to described first base station；
Described first base station is additionally operable to, when the described 2nd HARQ identification information that a described HARQ identification information is denoted as failure and reception is denoted as successfully, obtain the described 2nd PUSCH demodulating data of at least one the second node B cache described, and described 2nd PUSCH demodulating data is sent to described equipment of the core network.
Preferably, described first base station is additionally operable to, and when a described HARQ identification information is denoted as successfully, sends a described PUSCH demodulating data to described equipment of the core network.
Preferably, described first base station is used for, a described HARQ identification information be denoted as failure and receive all second base stations send described 2nd HARQ identification information be all denoted as unsuccessfully time, obtain the soft bit information of at least one the second base station described, and merge after successfully with the soft bit information of at least one the second base station described at local soft bit information, the data after merging are sent to described equipment of the core network.
Preferably, described first base station is additionally operable to, local soft bit information is being merged after unsuccessfully with the soft bit information of at least one the second base station described, obtain the soft bit information of next second base station, and merge after successfully with the soft bit information of described next second base station at local soft bit information, the data after merging are sent to described equipment of the core network.
Preferably, described first base station is additionally operable to, and after demodulating described upstream data, obtains the first physical uplink control channel PUCCH demodulating information；
At least one second base station described is additionally operable to, and after demodulating described upstream data, obtains the 2nd PUCCH demodulating information, and is sent to described first base station by described ethernet link by described 2nd PUCCH demodulating information；
Described first base station is additionally operable to, after received the PUCCH demodulating information that at least one second base station described sends by described ethernet link, merge a described PUCCH demodulating information and described 2nd PUCCH demodulating information obtains schedule information, and after again receiving described upstream data, carry out uplink scheduling according to described schedule information.
Preferably, described equipment of the core network, for sending downlink data to described first base station；
Described first base station, for receiving the described downlink data that described equipment of the core network sends, and carry out descending scheduling according to described schedule information, and described downlink data is sent at least one second base station described by described ethernet link, and described downlink data is sent to described terminal by described air interface；
At least one second base station described, for receiving, by described ethernet link, the described downlink data that described first base station sends, and is sent described downlink data to described terminal by described air interface；
Described terminal, for receiving described first base station and the described downlink data of at least one second base station transmission described by described air interface.
According to a further aspect in the invention, it is provided that a kind of data transmission method based on super cell, including:
First base station receives the upstream data that terminal sends, and demodulates described upstream data and obtain the first Physical Uplink Shared Channel PUSCH demodulating data and the first hybrid automatic repeat-request HARQ and identify message；
The 2nd HARQ identification information that at least one second base station sends is received by ethernet link；
When a described HARQ identification information is denoted as failure and described 2nd HARQ identification information is denoted as successfully, the described 2nd PUSCH demodulating data of at least one the second node B cache described is obtained by described ethernet link, and described 2nd PUSCH demodulating data is sent to described equipment of the core network, wherein, described 2nd HARQ identification information and described 2nd PUSCH demodulating data are that the described upstream data that at least one second base station demodulation described receives obtains.
Preferably, a described HARQ identification information be denoted as failure and receive all second base stations send described 2nd HARQ identification information be all denoted as unsuccessfully time, obtain the soft bit information of at least one the second base station described, and merge after successfully with the soft bit information of at least one the second base station described at local soft bit information, the data after merging are sent to described equipment of the core network.
Preferably, local soft bit information is being merged after unsuccessfully with the soft bit information of at least one the second base station described, obtain the soft bit information of next second base station, and merge after successfully with the soft bit information of described next second base station at local soft bit information, the data after merging are sent to described equipment of the core network.
According to a further aspect in the invention, it is provided that a kind of data transmission method based on super cell, including:
Second base station receives the upstream data that terminal sends, and demodulates described upstream data and obtain the second Physical Uplink Shared Channel PUSCH demodulating data and the second hybrid automatic repeat-request HARQ and identify message；
2nd PUSCH demodulating data described in buffer memory, and described 2nd HARQ is identified message by ethernet link transmission to the first base station；
Determine in described first base station and be denoted as failure and when described 2nd HARQ identification information is denoted as successfully according to demodulating the HARQ identification information that obtains of described upstream data, by described ethernet link, the described 2nd PUSCH demodulating data of buffer memory is sent to the first base station.
Pass through the present invention, a kind of data transmission system based on super cell is provided, this system includes: equipment of the core network, the first base station being connected with described equipment of the core network, at least one second base station being connected by described ethernet link with described first base station and the terminal being connected with described first base station and at least one second base station described respectively, wherein, described equipment of the core network, for carrying out data interaction with described first base station；Described first base station, for carrying out data interaction by described ethernet link with at least one second base station described and described equipment of the core network, and carries out data interaction with described terminal by air interface；At least one second base station described, for carrying out data interaction by described ethernet link and described first base station, and carries out data interaction with described terminal by described air interface；Described terminal, for carrying out data interaction by described air interface with described first base station and at least one second base station described, so, owing to the first base station and the second base station are connected by ethernet link, from the optical fiber link high without lower deployment cost, and for not supporting the base station of optical fiber interface, also super cell can be disposed, solve network architecture cost height and the inflexible problem of framework, it is possible to take into account focus and cover continuously, promote Consumer's Experience.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of data transmission system based on super cell according to embodiments of the present invention；
Fig. 2 is the time diagram of a kind of data transmission according to embodiments of the present invention；
Fig. 3 is the schematic flow sheet of a kind of data transmission method based on super cell according to embodiments of the present invention；
Fig. 4 is the schematic flow sheet based on the data transmission method of super cell of the another kind according to embodiments of the present invention；
Fig. 5 is the schematic flow sheet based on the data transmission method of super cell of the another kind according to embodiments of the present invention.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Providing a kind of data transmission system based on super cell in the present embodiment, Fig. 1 is the structural representation of the data transmission system based on super cell according to embodiments of the present invention, as it is shown in figure 1, this system includes:
Equipment of the core network 101, the first base station 102 being connected with this equipment of the core network 101, at least one second base station 104 that this ethernet link 103 is connected and the terminal 105 being connected respectively is passed through with this first base station 102 and this at least one second base station 104, wherein with this first base station 102
This equipment of the core network 101, for carrying out data interaction with this first base station 102；
This first base station 102, for carrying out data interaction by this ethernet link 103 with this at least one the second base station 104 and this equipment of the core network 101, and carries out data interaction with this terminal 105 by air interface；
This at least one second base station 104, for carrying out data interaction by this ethernet link 103 with this first base station 102, and carries out data interaction with this terminal 105 by this air interface；
This terminal 105, for carrying out data interaction by this air interface with this first base station 102 and this at least one second base station 104.
So, owing to the first base station and the second base station are connected by ethernet link, from the optical fiber link high without lower deployment cost, and for not supporting the base station of optical fiber interface, super cell also can be disposed, solve network architecture cost height and the inflexible problem of framework, focus can be taken into account and cover continuously, promoting Consumer's Experience, additionally, native system is not when configuring super cell, then the independence that can deteriorate to multiple base station is disposed.
By downlink data transmission and transmitting uplink data, this system is illustrated individually below, for transmitting uplink data, it is preferable that
This terminal 105, for sending upstream data by air interface to this first base station 102 and this at least one second base station 104；
This first base station 102, for demodulating this upstream data, obtain a PUSCH (PhysicalUplinkSharedChannel, Physical Uplink Shared Channel) demodulating data and a HARQ (HybridAutomaticRepeatRequest, hybrid automatic repeat-request) identify message；
This at least one second base station 104, is used for demodulating this upstream data, obtains the 2nd PUSCH demodulating data and the 2nd HARQ identification information, and sends the 2nd HARQ identification information buffer memory the 2nd PUSCH demodulating data to this first base station 102；
This first base station 101 is additionally operable to, when the 2nd HARQ identification information that a HARQ identification information is denoted as failure and reception is denoted as successfully, obtain the 2nd PUSCH demodulating data of this at least one the second base station 104 buffer memory, and the 2nd PUSCH demodulating data is sent to this equipment of the core network.
Wherein, upstream data is demodulated by the first base station and the second base station respectively in physical layer, first base station is at MAC (MediaAccessControl, media are got involved and are controlled) lamination also a PUSCH demodulating data and the 2nd PUSCH demodulating data, so, first base station is determining that the PUSCH demodulating data that this locality demodulates is mistake and the 2nd PUSCH demodulating data that demodulates of at least one second base station is correct, then obtain the 2nd PUSCH demodulating data of the second node B cache corresponding to this 2nd correct PUSCH demodulating data, avoid all to send whole 2nd PUSCH demodulating datas and cause the wasting of resources to the first base station, thus saving the bandwidth of Ethernet and reducing time delay.
Preferably, this first base station 102 is additionally operable to, when a HARQ identification information is denoted as successfully, oneth PUSCH demodulating data is sent to this equipment of the core network, so, the PUSCH data demodulated in this locality when the first base station are correct, then directly send a PUSCH demodulating data to this equipment of the core network, the 2nd PUSCH demodulating data that the second base station demodulates need not be obtained again, thus saving the bandwidth of Ethernet and reducing time delay.
Preferably, this first base station 102 is used for, a HARQ identification information be denoted as failure and receive all second base stations send the 2nd HARQ identification information be all denoted as unsuccessfully time, obtain the soft bit information of this at least one the second base station, and the soft bit information in local at least one the second base station of soft bit information and this merges after successfully, the data after merging are sent to this equipment of the core network.
Preferably, this first base station 102 is additionally operable to, the soft bit information of local at least one the second base station of soft bit information and this is being merged after unsuccessfully, obtain the soft bit information of next second base station, and merge after successfully with the soft bit information of this next second base station at local soft bit information, the data after merging are sent to this equipment of the core network.
Wherein, first base station obtains the soft bit information of the second base station in physical layer, and the soft bit information of local physical layer is merged with the soft bit information obtained from the second base station, and send merging the data obtained to equipment of the core network, so, when the merging of PUSCH demodulating data cannot be carried out in MAC layer, it is possible to physical layer carries out the merging of soft bit information again.
Preferably, this first base station 102 is additionally operable to, and after demodulating this upstream data, obtains a PUCCH (PhysicalUplinkControlChannel, physical uplink control channel) demodulating information；
This at least one second base station 104 is additionally operable to, and after demodulating this upstream data, obtains the 2nd PUCCH demodulating information, and is sent to this first base station 102 by this ethernet link 103 by the 2nd PUCCH demodulating information；
This first base station 102 is additionally operable to, after received the PUCCH demodulating information that this at least one second base station sends by this ethernet link 103, merge a PUCCH demodulating information and the 2nd PUCCH demodulating information obtains schedule information, and after again receiving this upstream data, carry out uplink scheduling according to this schedule information.
For downlink data transmission, it is preferable that
This equipment of the core network 101, for sending downlink data to this first base station 102；
This first base station 102, for receiving this downlink data that this equipment of the core network 101 sends, and carry out descending scheduling according to this schedule information, and this downlink data is sent to this at least one second base station 104 by this ethernet link 103, and this downlink data is sent to this terminal 105 by this air interface；
This at least one second base station 104, for receiving, by this ethernet link 103, this downlink data that this first base station 102 sends, and is sent this downlink data to this terminal 105 by this air interface；
This terminal 105, for receiving this first base station 102 and this downlink data of this at least one second base station 104 transmission by this air interface.
Wherein, the first base station, after receiving downlink data, carries out uplink scheduling in MAC layer, and this downlink data is sent the physical layer to the second base station, this first base station and the second base station simultaneously in physical layer transmission to terminal by ethernet link.
Illustrate with reference to Fig. 2, as shown in Figure 2, Fig. 2 is the time diagram of the data transmission of the embodiment of the present invention, transmission for upstream data, terminal is after sending upstream data, first base station and the second base station are received simultaneously, and carry out PUCCH demodulation process and PUSCH demodulation process, and the MAC layer of the data transmission after PUCCH demodulation process and PUSCH demodulation process to the first base station is processed by the second base station by passage 1；For downlink data transmission, the physical layer to the second base station, after receiving the downlink data that equipment of the core network sends, is transmitted by passage 2 in first base station, and the first base station and the second base station send this downlink data simultaneously on a physical layer, wherein, passage 1 and passage 2 are ethernet link passage.
Fig. 3 is the schematic flow sheet of the data transmission method based on super cell according to embodiments of the present invention, as it is shown on figure 3, the executive agent of this embodiment is the first base station, this process step includes:
S301, the first base station receives the upstream data that terminal sends；
S302, demodulates this upstream data and obtains the first Physical Uplink Shared Channel PUSCH demodulating data and the first hybrid automatic repeat-request HARQ mark message；
S303, receives, by ethernet link, the 2nd HARQ identification information that at least one second base station sends；
S304, when a HARQ identification information is denoted as failure and the 2nd HARQ identification information is denoted as successfully, obtains the 2nd PUSCH demodulating data of this at least one the second node B cache by this ethernet link；
It should be noted that when determining that a HARQ identification information is denoted as successfully, a local PUSCH demodulating data is sent to equipment of the core network by dominant base.
S305, sends the 2nd PUSCH demodulating data to this equipment of the core network；
Wherein, the 2nd HARQ identification information and the 2nd PUSCH demodulating data are that this upstream data that this at least one second base station demodulation receives obtains.
It should be noted that, upstream data is demodulated by the first base station and the second base station respectively in physical layer, first base station merges a PUSCH demodulating data and the 2nd PUSCH demodulating data in MAC layer, so, first base station is determining that the PUSCH demodulating data that this locality demodulates is mistake and the 2nd PUSCH demodulating data that demodulates of at least one second base station is correct, then obtain the 2nd PUSCH demodulating data of the second node B cache corresponding to this 2nd correct PUSCH demodulating data, avoid all to send whole 2nd PUSCH demodulating datas and cause the wasting of resources to the first base station, thus saving the bandwidth of Ethernet and reducing time delay.
Preferably, a HARQ identification information be denoted as failure and receive all second base stations send the 2nd HARQ identification information be all denoted as unsuccessfully time, obtain the soft bit information of this at least one the second base station, and the soft bit information in local at least one the second base station of soft bit information and this merges after successfully, the data after merging are sent to this equipment of the core network.
Preferably, the soft bit information of local at least one the second base station of soft bit information and this is being merged after unsuccessfully, obtain the soft bit information of next second base station, and merge after successfully with the soft bit information of this next second base station at local soft bit information, the data after merging are sent to this equipment of the core network.
Wherein, first base station obtains the soft bit information of the second base station in physical layer, and the soft bit information of local physical layer is merged with the soft bit information obtained from the second base station, and send merging the data obtained to equipment of the core network, so, when the merging of PUSCH demodulating data cannot be carried out in MAC layer, it is possible to physical layer carries out the merging of soft bit information again.
Preferably, this first base station is after demodulating this upstream data, obtain a PUCCH demodulating information, and the 2nd PUCCH demodulating information obtained after at least one second base station demodulates this upstream data is received by ethernet link, and merge a PUCCH demodulating information and the 2nd PUCCH demodulating information obtains schedule information, and after again receiving this upstream data, carry out uplink scheduling according to this schedule information；Second base station, after again receiving this upstream data, carries out uplink scheduling according to this schedule information.
Fig. 4 is the schematic flow sheet of the data transmission method based on super cell according to embodiments of the present invention, and as shown in Figure 4, the executive agent of this embodiment is the second base station, and this process step includes:
S401, the second base station receives the upstream data that terminal sends；
S402, demodulates this upstream data and obtains the 2nd PUSCH demodulating data and the 2nd HARQ mark message；
S403, buffer memory the 2nd PUSCH demodulating data, and the 2nd HARQ is identified message by ethernet link transmission to the first base station；
S404, determine in this first base station and be denoted as failure and when the 2nd HARQ identification information is denoted as successfully according to demodulating the HARQ identification information that obtains of this upstream data, by this ethernet link, the 2nd PUSCH demodulating data of buffer memory is sent to the first base station.
It should be noted that, upstream data is demodulated by the first base station and the second base station respectively in physical layer, first base station merges a PUSCH demodulating data and the 2nd PUSCH demodulating data in MAC layer, so, first base station is determining that the PUSCH demodulating data that this locality demodulates is mistake and the 2nd PUSCH demodulating data that demodulates of at least one second base station is correct, then obtain the 2nd PUSCH demodulating data of the second node B cache corresponding to this 2nd correct PUSCH demodulating data, avoid all to send whole 2nd PUSCH demodulating datas and cause the wasting of resources to the first base station, thus saving the bandwidth of Ethernet and reducing time delay.
2nd PUSCH demodulating data is sent to the protocol stack of more than RLC (RadioLinkControl, wireless spread-spectrum technology) layer and processes by the MAC layer of dominant base, sends data to S1 mouth, and sent to equipment of the core network by S1 mouth after having processed.
Fig. 5 is the schematic flow sheet of the data transmission method based on super cell according to embodiments of the present invention, as shown in Figure 5, describe in order to convenient, in embodiments of the present invention, first base station being designated as dominant base, the second base station is designated as prothetic group station, this is not construed as limiting by the present invention, this dominant base connects at least one prothetic group station by ethernet link, and this process step includes:
S501, terminal sends upstream data to dominant base and prothetic group station.
S502, dominant base demodulates this upstream data according to uplink scheduling and obtains a PUCCH demodulating information and a PUSCH demodulating data and a HARQ identification information.
Wherein, dominant base demodulates this upstream data in physical layer according to uplink scheduling result.
S503, prothetic group station demodulates this upstream data and obtains the 2nd PUCCH demodulating information and the 2nd PUSCH demodulating data and the 2nd HARQ identification information.
Wherein, a PUCCH demodulating information and the 2nd PUCCH demodulating information include confidence level.
It addition, prothetic group stands in physical layer demodulates this upstream data according to uplink scheduling result.
S504, auxiliary node B cache the 2nd PUSCH demodulating data, and by ethernet link, the 2nd PUCCH demodulating information and the 2nd HARQ identification information are sent to dominant base.
S505, dominant base merges a PUCCH demodulating information and the 2nd PUCCH demodulating information obtains schedule information.
Wherein, after again receiving this upstream data, all of PUCCH data is merged by dominant base, and subsequent main base station will carry out uplink scheduling according to this schedule information.
It should be noted that, this dominant base carries out uplink scheduling according to this schedule information in MAC layer, and uplink scheduling result is sent the physical layer at the physical layer to local and prothetic group station, so, when follow-up carry out transmitting uplink data time, dominant base and prothetic group stand in physical layer according to this uplink scheduling result demodulate upstream data.
S506, when determining that a HARQ identification information is denoted as failure and the 2nd HARQ identification information is denoted as successfully, dominant base obtains the 2nd PUSCH demodulating data at this prothetic group station.
S507, the 2nd PUSCH demodulating data is sent to equipment of the core network by dominant base.
Wherein, 2nd PUSCH demodulating data is sent to RLC (RadioLinkControl by the MAC layer of dominant base, wireless spread-spectrum technology) more than layer protocol stack processed, sends data to S1 mouth, and sent to equipment of the core network by S1 mouth after having processed.
It should be noted that when determining that a HARQ identification information is denoted as successfully, a local PUSCH demodulating data is sent to equipment of the core network by dominant base.
When the 2nd HARQ identification information that a HARQ identification information is denoted as failure and all prothetic group stations of receiving send all is denoted as unsuccessfully, dominant base obtains the soft bit information of this at least one extension station, and the soft bit information at local at least one prothetic group station of soft bit information and this merges after successfully, the data after merging are sent to this equipment of the core network.
The soft bit information of local at least one the second base station of soft bit information and this is being merged after unsuccessfully, obtain the soft bit information at next prothetic group station, and merge after successfully with the soft bit information at this next one prothetic group station at local soft bit information, the data after merging are sent to this equipment of the core network.
It should be noted that step S501 to step S507 is terminal sends the flow process of upstream data to equipment of the core network, step S507 to step S511 is that terminal sends the flow process of downlink data to equipment of the core network.
S508, dominant base receives the downlink data of equipment of the core network by S1 mouth.
S509, dominant base carries out descending scheduling according to schedule information, and is sent to prothetic group station by ethernet link by this downlink data.
Wherein, dominant base carries out descending scheduling in MAC layer, and descending scheduling result is sent the physical layer to physical layer and prothetic group station, dominant base and prothetic group station send downlink data according to this descending scheduling result, it addition, dominant base carries out uplink scheduling in MAC layer, and uplink scheduling result is sent the physical layer at the physical layer to local and prothetic group station, so, when carrying out transmitting uplink data, dominant base and prothetic group stand in physical layer and demodulate upstream data according to this uplink scheduling result.
S510, this downlink data is sent to terminal by dominant base.
S511, this downlink data is sent to terminal by prothetic group station.
It should be noted that downlink data is sent to terminal by dominant base and prothetic group station simultaneously.
Adopt above-described embodiment, dominant base and prothetic group station are connected by ethernet link, from the optical fiber link high without lower deployment cost, and for not supporting the base station of optical fiber interface, also super cell can be disposed, solve network architecture cost height and the inflexible problem of framework, focus can be taken into account and cover continuously, promote Consumer's Experience, additionally, transmitting uplink data is avoided all sent by whole 2nd PUSCH demodulating datas to dominant base and cause the wasting of resources, thus saving the bandwidth of Ethernet and reducing time delay.
It should be noted that, for this method embodiment, in order to be briefly described, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, embodiment described in this description belongs to preferred embodiment, necessary to involved action and the module not necessarily present invention.
In sum, the super cell system of present invention description is by the following technical solutions:
It is made up of equipment of the core network, base station and gigabit and above speed Ethernet switch and terminal.Network side entity is interconnected by Ethernet switch, and terminal is standard LTE equipment；
Wherein there is a dominant base, carry out the process of the whole protocol layer of LTE.Other be prothetic group station, only carry out physical layer and radio frequency protocol layer and process；
Chain of command, dominant base carries out master control, is broadcasted to each prothetic group station by Ethernet, and auxiliary base station in response performs and feedback；
Data surface, equipment of the core network only with dominant base S1 link setup.MAC-physical layer information is sent by Ethernet between dominant base and each prothetic group station.Descending employing Ethernet is broadcasted, and up employing selects clean culture；
Eat dishes without rice or wine aspect, descending sent together by all base stations.Up it is received demodulation by all base stations, dominant base performs preferably；
If native system is not configured to super cell networking, it is possible to deteriorate to multiple base station and independently dispose.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (11)
1. the data transmission system based on super cell, it is characterized in that, including: equipment of the core network, the first base station being connected with described equipment of the core network, at least one second base station being connected by described ethernet link with described first base station and the terminal being connected with described first base station and at least one second base station described respectively, wherein
Described equipment of the core network, for carrying out data interaction with described first base station；
Described first base station, for carrying out data interaction by described ethernet link with at least one second base station described and described equipment of the core network, and carries out data interaction with described terminal by air interface；
At least one second base station described, for carrying out data interaction by described ethernet link and described first base station, and carries out data interaction with described terminal by described air interface；
Described terminal, for carrying out data interaction by described air interface with described first base station and at least one second base station described.
2. system according to claim 1, it is characterised in that described terminal, for sending upstream data by air interface to described first base station and at least one second base station described；
Described first base station, is used for demodulating described upstream data, obtains the first Physical Uplink Shared Channel PUSCH demodulating data and the first hybrid automatic repeat-request HARQ identifies message；
At least one second base station described, is used for demodulating described upstream data, obtains the 2nd PUSCH demodulating data and the 2nd HARQ identification information, and sends described 2nd HARQ identification information the 2nd PUSCH demodulating data described in buffer memory to described first base station；
Described first base station is additionally operable to, when the described 2nd HARQ identification information that a described HARQ identification information is denoted as failure and reception is denoted as successfully, obtain the described 2nd PUSCH demodulating data of at least one the second node B cache described, and described 2nd PUSCH demodulating data is sent to described equipment of the core network.
3. system according to claim 2, it is characterised in that described first base station is additionally operable to, when a described HARQ identification information is denoted as successfully, sends a described PUSCH demodulating data to described equipment of the core network.
4. system according to claim 3, it is characterized in that, described first base station is used for, a described HARQ identification information be denoted as failure and receive all second base stations send described 2nd HARQ identification information be all denoted as unsuccessfully time, obtain the soft bit information of at least one the second base station described, and merge after successfully with the soft bit information of at least one the second base station described at local soft bit information, the data after merging are sent to described equipment of the core network.
5. system according to claim 4, it is characterized in that, described first base station is additionally operable to, local soft bit information is being merged after unsuccessfully with the soft bit information of at least one the second base station described, obtain the soft bit information of next second base station, and merge after successfully with the soft bit information of described next second base station at local soft bit information, the data after merging are sent to described equipment of the core network.
6. the system according to any one of claim 2 to 5, it is characterised in that described first base station is additionally operable to, after demodulating described upstream data, obtains the first physical uplink control channel PUCCH demodulating information；
At least one second base station described is additionally operable to, and after demodulating described upstream data, obtains the 2nd PUCCH demodulating information, and is sent to described first base station by described ethernet link by described 2nd PUCCH demodulating information；
Described first base station is additionally operable to, after received the PUCCH demodulating information that at least one second base station described sends by described ethernet link, merge a described PUCCH demodulating information and described 2nd PUCCH demodulating information obtains schedule information, and after again receiving described upstream data, carry out uplink scheduling according to described schedule information.
7. system according to claim 6, it is characterised in that described equipment of the core network, for sending downlink data to described first base station；
Described first base station, for receiving the described downlink data that described equipment of the core network sends, and carry out descending scheduling according to described schedule information, and described downlink data is sent at least one second base station described by described ethernet link, and described downlink data is sent to described terminal by described air interface；
At least one second base station described, for receiving, by described ethernet link, the described downlink data that described first base station sends, and is sent described downlink data to described terminal by described air interface；
Described terminal, for receiving described first base station and the described downlink data of at least one second base station transmission described by described air interface.
8. the data transmission method based on super cell, it is characterised in that including:
First base station receives the upstream data that terminal sends, and demodulates described upstream data and obtain the first Physical Uplink Shared Channel PUSCH demodulating data and the first hybrid automatic repeat-request HARQ and identify message；
The 2nd HARQ identification information that at least one second base station sends is received by ethernet link；
When a described HARQ identification information is denoted as failure and described 2nd HARQ identification information is denoted as successfully, the described 2nd PUSCH demodulating data of at least one the second node B cache described is obtained by described ethernet link, and described 2nd PUSCH demodulating data is sent to described equipment of the core network, wherein, described 2nd HARQ identification information and described 2nd PUSCH demodulating data are that the described upstream data that at least one second base station demodulation described receives obtains.
9. method according to claim 8, it is characterized in that, a described HARQ identification information be denoted as failure and receive all second base stations send described 2nd HARQ identification information be all denoted as unsuccessfully time, obtain the soft bit information of at least one the second base station described, and merge after successfully with the soft bit information of at least one the second base station described at local soft bit information, the data after merging are sent to described equipment of the core network.
10. method according to claim 9, it is characterized in that, local soft bit information is being merged after unsuccessfully with the soft bit information of at least one the second base station described, obtain the soft bit information of next second base station, and merge after successfully with the soft bit information of described next second base station at local soft bit information, the data after merging are sent to described equipment of the core network.
11. the data transmission method based on super cell, it is characterised in that including:
Second base station receives the upstream data that terminal sends, and demodulates described upstream data and obtain the second Physical Uplink Shared Channel PUSCH demodulating data and the second hybrid automatic repeat-request HARQ and identify message；
2nd PUSCH demodulating data described in buffer memory, and described 2nd HARQ is identified message by ethernet link transmission to the first base station；
Determine in described first base station and be denoted as failure and when described 2nd HARQ identification information is denoted as successfully according to demodulating the HARQ identification information that obtains of described upstream data, by described ethernet link, the described 2nd PUSCH demodulating data of buffer memory is sent to the first base station.
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| CN201410778539.XA CN105763302B (en) | 2014-12-15 | 2014-12-15 | Data transmission method and system based on super cell |
| PCT/CN2015/084715 WO2016095522A1 (en) | 2014-12-15 | 2015-07-21 | Super cell-based data transmission method and system |
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| CN201410778539.XA CN105763302B (en) | 2014-12-15 | 2014-12-15 | Data transmission method and system based on super cell |
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| WO2016095522A1 (en) | 2016-06-23 |
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