CN105763302B - 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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- CN105763302B CN105763302B CN201410778539.XA CN201410778539A CN105763302B CN 105763302 B CN105763302 B CN 105763302B CN 201410778539 A CN201410778539 A CN 201410778539A CN 105763302 B CN105763302 B CN 105763302B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The invention discloses a kind of data transmission method and system based on super cell, the system includes: equipment of the core network, the first base station being connect with the equipment of the core network, at least one second base station being connect with the first base station by the ethernet link and the terminal being connect respectively with the first base station and at least one second base station, wherein, first base station and the second base station carry out data interaction by ethernet link, through the invention, at least to solve the problems, such as that the network architecture is at high cost in the prior art and framework is inflexible.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of data transmission method and system based on super cell.
Background technique
Currently, super cell technology is widely used in high-speed rail, aerial navigation channel, super cell is by multiple CP
(Cell Portion, cell portion) composition.These CP logically still fall within the same cell, share common cell money
Source, such as cell ID (Identity, identification number), primary and secondary synchronization signals, frequency-hopping sequences and CRS (Common Reference
Signal, public reference signal)/DMRS (Demodulation Reference Signal)/SRS (Sounding
Reference Signal, Sounding Reference Signal) sequence etc..There is no movements between different CP in same super cell
The problem of property, mobility problem is just evolved into the detection and scheduling problem between a different CP of cell by this.
The technology can be merged into big cell in logic by multiple independent cells, reduce terminal interference and frequently cut
It changes.For the super-intensive network (Ultra Density Network) of a large amount of base stations composition, super cell is to mentioning
Network KPI (Key Performance Indicator, critical sales index) is risen to be very helpful.
Present super cell generally uses BBU (Building Base band Unit, baseband processing unit)+RRU
The network architecture of (Radio Remote Unit, Remote Radio Unit) networking, in such a mode, original multiple cells
Data carry out Combined Treatment, are jointly processed by the downlink data of the RRU or spaced antenna that send original multiple cells, and come
The upstream data to come from multiple RRU or spaced antenna group, to achieve the purpose that improve system performance.
But it is continuously covered due to being connected between BBU and RRU by optical fiber link for being directed to using the above-mentioned network architecture
It covers for LTE (Long Term Evolution, long term evolution) network of design, such as microcellulor super-intensive covers (station spacing
For 50~100m), building shade benefit in city is blind, floor vertically covers and large area continuously covers, and cost is excessively high, separately
Outside, in actual networking, current scheme can not flexibly take into account continuous covering and hot spot covering, be unfavorable for network from excellent
Change, influences KPI.
Summary of the invention
The present invention provides a kind of data transmission method and system based on super cell, at least to solve in the prior art
The network architecture is at high cost and the inflexible problem of framework.
According to an aspect of the invention, there is provided a kind of data transmission system based on super cell, which is characterized in that
It include: equipment of the core network, the first base station connecting with the equipment of the core network passes through the ether network chain with the first base station
At least one second base station of road connection and the end being connect respectively with the first base station and at least one described second base station
End, wherein
The equipment of the core network, for carrying out data interaction with the first base station；
The first base station, for passing through the ethernet link and at least one described second base station and the core net
Equipment carries out data interaction, and carries out data interaction by air interface with the terminal；
At least one described second base station, for carrying out data friendship by the ethernet link and the first base station
Mutually, and with the terminal by the air interface data interaction is carried out；
The terminal, for being carried out by the air interface and the first base station and at least one described second base station
Data interaction.
Preferably, the terminal, for passing through air interface to the first base station and at least one described second base station
Send upstream data；
The first base station obtains the first Physical Uplink Shared Channel PUSCH demodulation number for demodulating the upstream data
Accordingly and the first hybrid automatic repeat-request HARQ identifies message；
At least one described second base station obtains the 2nd PUSCH solution adjusting data and for demodulating the upstream data
Two HARQ identification informations, and the 2nd HARQ identification information is sent to the first base station, and cache the 2nd PUSCH solution
Adjusting data；
The first base station is also used to, and is denoted as failure and received described second in the first HARQ identification information
When HARQ identification information is denoted as successfully, the 2nd PUSCH for obtaining at least one second node B cache solves adjusting data,
And the 2nd PUSCH solution adjusting data is sent to the equipment of the core network.
Preferably, the first base station is also used to, when the first HARQ identification information is denoted as successfully, by described
One PUSCH solution adjusting data is sent to the equipment of the core network.
Preferably, the first base station is used for, in the institute that the first HARQ identification information is denoted as failure and receives
When the 2nd HARQ identification information for having the second base station to send all is denoted as unsuccessfully, at least one second base station is obtained
Soft bit information, and after local soft bit information merges successfully with the soft bit information of at least one second base station,
Data after merging are sent to the equipment of the core network.
Preferably, the first base station is also used to, by local soft bit information and at least one described second base station
Soft bit information merge failure after, obtain the soft bit information of next second base station, and local soft bit information with
After the soft bit information of next second base station merges successfully, the data after merging are sent to the equipment of the core network.
Preferably, the first base station is also used to, and after demodulating the upstream data, obtains the first physical uplink link control
Channel PUCCH demodulating information processed；
At least one described second base station is also used to, and after demodulating the upstream data, obtains the 2nd PUCCH demodulation letter
Breath, and the 2nd PUCCH demodulating information is sent to the first base station by the ethernet link；
The first base station is also used to, and is sent receiving at least one described second base station by the ethernet link
The first PUCCH demodulating information after, merge the first PUCCH demodulating information and the 2nd PUCCH demodulating information and adjusted
Information is spent, and after receiving the upstream data again, uplink scheduling is carried out according to the scheduling information.
Preferably, the equipment of the core network, for sending downlink data to the first base station；
The first base station, the downlink data sent for receiving the equipment of the core network, and according to the scheduling
Information carries out descending scheduling, and the downlink data is sent at least one described second base by the ethernet link
It stands, and the downlink data is sent to the terminal by the air interface；
At least one described second base station, for being received described in the first base station transmission by the ethernet link
Downlink data, and the downlink data is sent to the terminal by the air interface；
The terminal, for receiving the first base station and at least one described second base station hair by the air interface
The downlink data sent.
According to another aspect of the present invention, a kind of data transmission method based on super cell is provided, comprising:
First base station receives the upstream data that terminal is sent, and demodulates the upstream data to obtain the first physical uplink shared
Channel PUSCH solves adjusting data and the first hybrid automatic repeat-request HARQ identifies message；
The 2nd HARQ identification information of at least one second base station transmission is received by ethernet link；
When the first HARQ identification information is denoted as failure and the 2nd HARQ identification information is denoted as successfully, lead to
The 2nd PUSCH solution adjusting data that the ethernet link obtains at least one second node B cache is crossed, and will be described
2nd PUSCH solution adjusting data is sent to the equipment of the core network, wherein the 2nd HARQ identification information and described second
PUSCH solution adjusting data is that at least one described second base station demodulates the received upstream data and obtains.
Preferably, the institute sent in all second base stations that the first HARQ identification information is denoted as failure and receives
When stating the 2nd HARQ identification information and being all denoted as unsuccessfully, the soft bit information of at least one second base station is obtained, and at this
After the soft bit information on ground merges successfully with the soft bit information of at least one second base station, the data after merging are sent
To the equipment of the core network.
Preferably, local soft bit information is being merged into failure with the soft bit information of at least one second base station
Afterwards, the soft bit information of next second base station is obtained, and in local soft bit information and next second base station
After soft bit information merges successfully, the data after merging are sent to the equipment of the core network.
According to another aspect of the present invention, a kind of data transmission method based on super cell is provided, comprising:
Second base station receives the upstream data that terminal is sent, and demodulates the upstream data to obtain the second physical uplink shared
Channel PUSCH solves adjusting data and the second hybrid automatic repeat-request HARQ identifies message；
The 2nd PUSCH solution adjusting data is cached, and the 2nd HARQ is identified into message and is sent by ethernet link
To first base station；
Determine that the first HARQ identification information obtained according to the demodulation upstream data is denoted as losing in the first base station
It loses and when the 2nd HARQ identification information is denoted as successfully, by the ethernet link by the 2nd PUSCH of caching
Solution adjusting data is sent to first base station.
Through the invention, a kind of data transmission system based on super cell is provided, which includes: equipment of the core network,
The first base station being connect with the equipment of the core network, at least one being connect by the ethernet link with the first base station
Second base station and the terminal being connect respectively with the first base station and at least one described second base station, wherein the core
Net equipment, for carrying out data interaction with the first base station；The first base station, for passing through the ethernet link and institute
It states at least one second base station and the equipment of the core network carries out data interaction, and counted with the terminal by air interface
According to interaction；At least one described second base station, for carrying out data interaction by the ethernet link and the first base station,
And data interaction is carried out by the air interface with the terminal；The terminal, for by the air interface with it is described
First base station and at least one described second base station carry out data interaction, in this way, due to first base station and the second base station by with
Too net link connection, without the high optical fiber link of lower deployment cost, and the base station for not supporting optical fiber interface, also can
Super cell is disposed, solves the problems, such as that the network architecture is at high cost and framework is inflexible, hot spot and continuous covering can be taken into account,
Promote user experience.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of data transmission system based on super cell according to an embodiment of the present invention；
Fig. 2 is a kind of time diagram of data transmission according to an embodiment of the present invention；
Fig. 3 is a kind of flow diagram of data transmission method based on super cell according to an embodiment of the present invention；
Fig. 4 is the flow diagram of another data transmission method based on super cell according to an embodiment of the present invention；
Fig. 5 is the flow diagram of another data transmission method based on super cell according to an embodiment of the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
A kind of data transmission system based on super cell is provided in the present embodiment, and Fig. 1 is to implement according to the present invention
The structural schematic diagram of the data transmission system based on super cell of example, as shown in Figure 1, the system includes:
Equipment of the core network 101, the first base station 102 connecting with the equipment of the core network 101 pass through with the first base station 102
At least one second base station 104 of the ethernet link 103 connection and respectively with the first base station 102 and this at least one the
The terminal 105 of two base stations 104 connection, wherein
The equipment of the core network 101, for carrying out data interaction with the first base station 102；
The first base station 102, for passing through the ethernet link 103 and at least one second base station 104 and the core
Net equipment 101 carries out data interaction, and carries out data interaction by air interface with the terminal 105；
At least one second base station 104, for carrying out data by the ethernet link 103 and the first base station 102
Interaction, and data interaction is carried out by the air interface with the terminal 105；
The terminal 105, for by the air interface and the first base station 102 and at least one second base station 104 into
Row data interaction.
In this way, since first base station is connected by ethernet link with the second base station, it is high without lower deployment cost
Optical fiber link, and the base station for not supporting optical fiber interface, can also dispose super cell, solve the network architecture it is at high cost and
The inflexible problem of framework can take into account hot spot and continuous covering, promote user experience, in addition, this system do not configure it is super
When grade cell, then it can degenerate for the independence deployment of multiple base stations.
The system is illustrated by downlink data transmission and transmitting uplink data individually below, upstream data is passed
It is defeated, it is preferable that
The terminal 105, for being sent by air interface to the first base station 102 and at least one second base station 104
Upstream data；
The first base station 102 obtains the first PUSCH (Physical Uplink Shared for demodulating the upstream data
Channel, Physical Uplink Shared Channel) solve adjusting data and the first HARQ (Hybrid Automatic Repeat
Request, hybrid automatic repeat-request) mark message；
At least one second base station 104 obtains the 2nd PUSCH solution adjusting data and for demodulating the upstream data
Two HARQ identification informations, and the 2nd HARQ identification information is sent to the first base station 102, and cache the 2nd PUSCH demodulation
Data；
The first base station 101 is also used to, and is denoted as failure and received 2nd HARQ in the first HARQ identification information
When identification information is denoted as successfully, the 2nd PUSCH solution adjusting data of at least one second base station 104 caching is obtained, and will
2nd PUSCH solution adjusting data is sent to the equipment of the core network.
Wherein, first base station and the second base station respectively demodulate upstream data in physical layer, and first base station is in MAC
(Media Access Control, media intervention control) laminated and the first PUSCH solution adjusting data and the 2nd PUSCH demodulate number
According in this way, first base station is determining that the first PUSCH locally demodulated solution adjusting data is mistake and at least one second base station
The 2nd PUSCH solution adjusting data demodulated is correctly, then to obtain correct 2nd PUSCH and solve corresponding second base of adjusting data
It stands the 2nd PUSCH solution adjusting data of caching, avoids and all the 2nd PUSCH solution adjusting datas are all sent to first base station and cause to provide
Source waste, to save the bandwidth of Ethernet and reduce time delay.
Preferably, which is also used to, when the first HARQ identification information is denoted as successfully, by this first
PUSCH solution adjusting data is sent to the equipment of the core network, in this way, when first base station is in the first PUSCH data locally demodulated
Correctly, then the first PUSCH solution adjusting data is directly sent to the equipment of the core network, does not need to obtain the demodulation of the second base station again
The 2nd PUSCH out solves adjusting data, to save the bandwidth of Ethernet and reduce time delay.
Preferably, which is used for, the first HARQ identification information is denoted as failure and receives all
When the 2nd HARQ identification information that second base station is sent all is denoted as unsuccessfully, the soft bit of at least one second base station is obtained
Information, and after in local soft bit information, soft bit information of at least one the second base station merges successfully with this, after merging
Data be sent to the equipment of the core network.
Preferably, which is also used to, by local soft bit information and at least one second base station
After soft bit information merging failure, the soft bit information of next second base station is obtained, and in local soft bit information and be somebody's turn to do
After the soft bit information of next second base station merges successfully, the data after merging are sent to the equipment of the core network.
Wherein, first base station obtains the soft bit information of the second base station in physical layer, and by the soft bit of local physical layer
Information merges with the soft bit information obtained from the second base station, and is sent to equipment of the core network for obtained data are merged, in this way,
When can not MAC layer carry out PUSCH solution adjusting data merging when, can again physical layer carry out soft bit information merging.
Preferably, which is also used to, and after demodulating the upstream data, obtains the first PUCCH (Physical
Uplink Control Channel, physical uplink control channel) demodulating information；
At least one second base station 104 is also used to, and after demodulating the upstream data, obtains the 2nd PUCCH demodulating information,
And the 2nd PUCCH demodulating information is sent to the first base station 102 by the ethernet link 103；
The first base station 102 is also used to, and is receiving at least one second base station transmission by the ethernet link 103
After first PUCCH demodulating information, merges the first PUCCH demodulating information and the 2nd PUCCH demodulating information obtains scheduling information,
And after receiving the upstream data again, uplink scheduling is carried out according to the scheduling information.
For downlink data transmission, it is preferable that
The equipment of the core network 101, for sending downlink data to the first base station 102；
The first base station 102 is believed for receiving the downlink data of the equipment of the core network 101 transmission, and according to the scheduling
Breath carries out descending scheduling, and the downlink data is sent at least one second base station 104 by the ethernet link 103,
And the downlink data is sent to the terminal 105 by the air interface；
At least one second base station 104, for receiving what the first base station 102 was sent by the ethernet link 103
The downlink data, and the downlink data is sent to the terminal 105 by the air interface；
The terminal 105, for receiving the first base station 102 and at least one second base station 104 by the air interface
The downlink data sent.
Wherein, first base station carries out uplink scheduling in MAC layer after receiving downlink data, and passes through ethernet link
The downlink data is sent to the physical layer of the second base station, the first base station and the second base station are sent to end in physical layer simultaneously
End.
It is illustrated referring to Fig. 2, as shown in Fig. 2, the time diagram that the data that Fig. 2 is the embodiment of the present invention are transmitted, right
In the transmission of upstream data, after sending upstream data, first base station and the second base station are received terminal simultaneously, and are carried out
PUCCH demodulation process and PUSCH demodulation process, the second base station are demodulated PUCCH demodulation process and PUSCH by channel 1
The MAC layer that data that treated are transmitted to first base station is handled；For downlink data transmission, first base station is receiving core
After the downlink data that heart net equipment is sent, the physical layer of the second base station is transmitted to by channel 2, first base station and the second base station are same
When send the downlink data on a physical layer, wherein channel 1 and channel 2 are ethernet link channel.
Fig. 3 is the flow diagram of the data transmission method according to an embodiment of the present invention based on super cell, such as Fig. 3 institute
Show, the executing subject of the embodiment is first base station, which includes:
S301, first base station receive the upstream data that terminal is sent；
S302 demodulates the upstream data and obtains the first Physical Uplink Shared Channel PUSCH solution adjusting data and the first mixing
Automatic repeat request HARQ identifies message；
S303 receives the 2nd HARQ identification information of at least one second base station transmission by ethernet link；
S304, when the first HARQ identification information is denoted as failure and the 2nd HARQ identification information is denoted as successfully,
Adjusting data is solved by the 2nd PUSCH that the ethernet link obtains at least one second node B cache；
It should be noted that when determining that the first HARQ identification information is denoted as successfully, master base station is by local first
PUSCH solution adjusting data is sent to equipment of the core network.
2nd PUSCH solution adjusting data is sent to the equipment of the core network by S305；
Wherein, the 2nd HARQ identification information and the 2nd PUSCH solution adjusting data are at least one second base station demodulation
What the received upstream data obtained.
It should be noted that first base station and the second base station respectively demodulate upstream data in physical layer, the first base
It stands and merges the first PUSCH solution adjusting data and the 2nd PUSCH solution adjusting data in MAC layer, in this way, first base station is determining local demodulation
The first PUSCH solution adjusting data out is that the 2nd PUSCH solution adjusting data that wrong and at least one second base station demodulates is just
True, then the 2nd PUSCH solution adjusting data that correct 2nd PUSCH solves corresponding second node B cache of adjusting data is obtained, is kept away
Exempt from that all the 2nd PUSCH solution adjusting datas are all sent to first base station and are resulted in waste of resources, to save the band of Ethernet
Width simultaneously reduces time delay.
Preferably, send in the first HARQ identification information is denoted as failure and receives all second base stations this
When two HARQ identification informations are all denoted as unsuccessfully, the soft bit information of at least one second base station is obtained, and in the soft of local
Data after merging are sent to the core after soft bit information of at least one the second base station merges successfully with this by bit information
Net equipment.
Preferably, by local soft bit information, soft bit information of at least one the second base station merges failure with this
Afterwards, the soft bit information of next second base station is obtained, and in the soft of local soft bit information and next second base station
After bit information merges successfully, the data after merging are sent to the equipment of the core network.
Wherein, first base station obtains the soft bit information of the second base station in physical layer, and by the soft bit of local physical layer
Information merges with the soft bit information obtained from the second base station, and is sent to equipment of the core network for obtained data are merged, in this way,
When can not MAC layer carry out PUSCH solution adjusting data merging when, can again physical layer carry out soft bit information merging.
Preferably, which obtains the first PUCCH demodulating information, and pass through ether after demodulating the upstream data
Network chain road receives at least one second base station and demodulates the 2nd PUCCH demodulating information obtained after the upstream data, and merge this
One PUCCH demodulating information and the 2nd PUCCH demodulating information obtain scheduling information, and after receiving the upstream data again,
Uplink scheduling is carried out according to the scheduling information；Second base station after receiving the upstream data again, according to the scheduling information into
Row uplink scheduling.
Fig. 4 is the flow diagram of the data transmission method according to an embodiment of the present invention based on super cell, such as Fig. 4 institute
Show, the executing subject of the embodiment is the second base station, which includes:
S401, the second base station receive the upstream data that terminal is sent；
S402 demodulates the upstream data and obtains the 2nd PUSCH solution adjusting data and the 2nd HARQ mark message；
S403 caches the 2nd PUSCH solution adjusting data, and the 2nd HARQ is identified message and is sent by ethernet link
To first base station；
S404 is denoted as losing in first base station determination according to the first HARQ identification information that the upstream data obtains is demodulated
It loses and when the 2nd HARQ identification information is denoted as successfully, the 2nd PUSCH of caching is demodulated by number by the ethernet link
According to being sent to first base station.
It should be noted that first base station and the second base station respectively demodulate upstream data in physical layer, the first base
It stands and merges the first PUSCH solution adjusting data and the 2nd PUSCH solution adjusting data in MAC layer, in this way, first base station is determining local demodulation
The first PUSCH solution adjusting data out is that the 2nd PUSCH solution adjusting data that wrong and at least one second base station demodulates is just
True, then the 2nd PUSCH solution adjusting data that correct 2nd PUSCH solves corresponding second node B cache of adjusting data is obtained, is kept away
Exempt from that all the 2nd PUSCH solution adjusting datas are all sent to first base station and are resulted in waste of resources, to save the band of Ethernet
Width simultaneously reduces time delay.
2nd PUSCH solution adjusting data is sent to RLC (Radio Link Control, Radio Link by the MAC layer of master base station
Control) protocol stack more than layer handled, S1 mouthfuls are sent data to after having handled, and be sent to core net by S1 mouthfuls and set
It is standby.
Fig. 5 is the flow diagram of the data transmission method according to an embodiment of the present invention based on super cell, such as Fig. 5 institute
Show, for the convenience of description, in embodiments of the present invention, first base station is denoted as master base station, the second base station is denoted as prothetic group station, this
Invention is not construed as limiting this, which connects at least one prothetic group station by ethernet link, which includes:
S501, terminal send upstream data to master base station and prothetic group station.
S502, master base station demodulate the upstream data according to uplink scheduling and obtain the first PUCCH demodulating information and the first PUSCH
Solve adjusting data and the first HARQ identification information.
Wherein, master base station demodulates the upstream data according to uplink scheduling result in physical layer.
S503, prothetic group station demodulate the upstream data obtain the 2nd PUCCH demodulating information and the 2nd PUSCH solution adjusting data and
2nd HARQ identification information.
Wherein, the first PUCCH demodulating information and the 2nd PUCCH demodulating information include confidence level.
In addition, prothetic group station demodulates the upstream data according to uplink scheduling result in physical layer.
S504, auxiliary the 2nd PUSCH of node B cache solve adjusting data, and are demodulated the 2nd PUCCH by ethernet link
Information and the 2nd HARQ identification information are sent to master base station.
S505, master base station merges the first PUCCH demodulating information and the 2nd PUCCH demodulating information obtains scheduling information.
Wherein, after receiving the upstream data again, master base station merges all PUCCH datas, subsequent master
Base station will carry out uplink scheduling according to the scheduling information.
It should be noted that the master base station carries out uplink scheduling in MAC layer according to the scheduling information, and by uplink scheduling knot
Fruit is sent to the physical layer of local physical layer and prothetic group station, in this way, when subsequent progress transmitting uplink data, master base station and auxiliary
Base station demodulates upstream data according to the uplink scheduling result in physical layer.
S506, when determining that the first HARQ identification information is denoted as failure and the 2nd HARQ identification information is denoted as successfully,
Master base station obtains the 2nd PUSCH solution adjusting data at the prothetic group station.
2nd PUSCH solution adjusting data is sent to equipment of the core network by S507, master base station.
Wherein, the 2nd PUSCH solution adjusting data is sent to RLC (Radio Link Control, nothing by the MAC layer of master base station
Wired link control) protocol stack more than layer handled, S1 mouthfuls are sent data to after having handled, and be sent to core by S1 mouthfuls
Heart net equipment.
It should be noted that when determining that the first HARQ identification information is denoted as successfully, master base station is by local first
PUSCH solution adjusting data is sent to equipment of the core network.
In the 2nd HARQ mark that all prothetic group stations that the first HARQ identification information is denoted as failure and receives are sent
When knowledge information is all denoted as unsuccessfully, master base station obtains the soft bit information of at least one extension station, and believes in local soft bit
After breath merges successfully with the soft bit information at least one prothetic group station, the data after merging are sent to the equipment of the core network.
After by local soft bit information, soft bit information of at least one the second base station merges failure with this, under acquisition
The soft bit information at one prothetic group station, and the soft bit information at local soft bit information and next prothetic group station is merged into
After function, the data after merging are sent to the equipment of the core network.
It should be noted that step S501 to step S507 is the process that terminal sends upstream data to equipment of the core network,
Step S507 to step S511 is the process that terminal sends downlink data to equipment of the core network.
S508, master base station receive the downlink data of equipment of the core network by S1 mouthfuls.
S509, master base station carries out descending scheduling according to scheduling information, and the downlink data is sent by ethernet link
To prothetic group station.
Wherein, master base station carries out descending scheduling in MAC layer, and descending scheduling result is sent to physical layer and prothetic group station
Physical layer, master base station and prothetic group station send downlink data according to the descending scheduling result, in addition, master base station is on MAC layer carries out
Row is dispatched, and uplink scheduling result is sent to the physical layer of local physical layer and prothetic group station, in this way, when carrying out upstream data
When transmission, master base station and prothetic group station demodulate upstream data according to the uplink scheduling result in physical layer.
The downlink data is sent to terminal by S510, master base station.
The downlink data is sent to terminal by S511, prothetic group station.
It should be noted that downlink data is sent to terminal simultaneously by master base station and prothetic group station.
Using above-described embodiment, master base station is connected with prothetic group station by ethernet link, without lower deployment cost height
Optical fiber link, and the base station for not supporting optical fiber interface can also dispose super cell, it is at high cost to solve the network architecture
And the inflexible problem of framework, hot spot and continuous covering can be taken into account, user experience is promoted, in addition, being passed for upstream data
All the 2nd PUSCH solution adjusting datas are all sent to master base station and resulted in waste of resources by defeated avoid, to save Ethernet
Bandwidth simultaneously reduces time delay.
It should be noted that for simple description, therefore, it is stated as a series of movements for this method embodiment
Combination, but those skilled in the art should understand that, the present invention is not limited by the sequence of acts described, because according to this
Invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know that, explanation
Embodiment described in book belongs to preferred embodiment, and related actions and modules not necessarily present invention institute is necessary
's.
In conclusion the super cell system that the present invention describes is using following technical scheme:
It is made of equipment of the core network, base station and gigabit and the above rate Ethernet switch and terminal.Network side entity is logical
Ethernet switch interconnection is crossed, terminal is standard LTE equipment；
Wherein there is a master base station, carries out the processing of the entire protocol layer of LTE.Others are prothetic group station, only carry out physics
Layer and the processing of radio frequency protocol layer；
Control plane, master base station carry out master control, are broadcasted by Ethernet to each prothetic group station, and auxiliary base station in response executes and anti-
Feedback；
Data surface, equipment of the core network only with master base station S1 link setup.It is sent out between master base station and each prothetic group station by Ethernet
Send MAC- physical layer information.Downlink is broadcasted using Ethernet, and uplink is using selection unicast；
In terms of eating dishes without rice or wine, downlink is sent together by all base stations.Uplink carries out reception demodulation by all base stations, is held by master base station
Row is preferred；
If this system is not configured to super cell networking, it can degenerate and independently be disposed for multiple base stations.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of data transmission system based on super cell characterized by comprising equipment of the core network, with the core net
The first base station of equipment connection, at least one second base station being connect with the first base station by ethernet link and difference
The terminal being connect with the first base station and at least one described second base station, wherein
The equipment of the core network, for carrying out data interaction with the first base station；
The first base station, for passing through the ethernet link and at least one described second base station and the equipment of the core network
Data interaction is carried out, and data interaction is carried out by air interface with the terminal；
At least one described second base station, for carrying out data interaction by the ethernet link and the first base station, and
Data interaction is carried out by the air interface with the terminal；
The terminal, for carrying out data by the air interface and the first base station and at least one described second base station
Interaction；
Wherein, the terminal, for being sent by air interface to the first base station and at least one described second base station
Row data；
The first base station, for demodulating the upstream data, obtain the first Physical Uplink Shared Channel PUSCH solution adjusting data with
And the first hybrid automatic repeat-request HARQ identification information；
At least one described second base station obtains the 2nd PUSCH solution adjusting data and second for demodulating the upstream data
HARQ identification information, and the 2nd HARQ identification information is sent to the first base station, and cache the 2nd PUSCH demodulation
Data；
The first base station is also used to, and is denoted as failure and the received 2nd HARQ mark letter in the first HARQ identification information
Breath is when being denoted as successfully, and the 2nd PUSCH for obtaining at least one second node B cache solves adjusting data, and by described the
Two PUSCH solution adjusting data is sent to the equipment of the core network.
2. system according to claim 1, which is characterized in that the first base station is also used to, and is marked in the first HARQ
When knowledge information indicating is successfully, the first PUSCH solution adjusting data is sent to the equipment of the core network.
3. system according to claim 2, which is characterized in that the first base station is used for, and is identified in the first HARQ
When information indicating is that the 2nd HARQ identification information for all second base stations transmission for failing and receiving all is denoted as unsuccessfully,
The soft bit information of at least one second base station is obtained, and in local soft bit information and at least one described second base
After the soft bit information stood merges successfully, the data after merging are sent to the equipment of the core network.
4. system according to claim 3, which is characterized in that the first base station is also used to, by local soft bit
After information merges failure with the soft bit information of at least one second base station, the soft bit letter of next second base station is obtained
Breath, and after local soft bit information merges successfully with the soft bit information of next second base station, after merging
Data are sent to the equipment of the core network.
5. system according to any one of claims 1 to 4, which is characterized in that the first base station is also used to, in demodulation institute
After stating upstream data, the first physical uplink control channel PUCCH demodulating information is obtained；At least one described second base station is also
For obtaining the 2nd PUCCH demodulating information, and the 2nd PUCCH demodulating information is passed through after demodulating the upstream data
The ethernet link is sent to the first base station；
The first base station is also used to, in receive that at least one described second base station sends by the ethernet link the
After two PUCCH demodulating informations, merges the first PUCCH demodulating information and the 2nd PUCCH demodulating information obtains scheduling letter
Breath, and after receiving the upstream data again, uplink scheduling is carried out according to the scheduling information.
6. system according to claim 5, which is characterized in that the equipment of the core network, for being sent out to the first base station
Send downlink data；
The first base station, the downlink data sent for receiving the equipment of the core network, and according to the scheduling information
Descending scheduling is carried out, and the downlink data is sent at least one described second base station by the ethernet link, and
The downlink data is sent to the terminal by the air interface；
At least one described second base station, for receiving the downlink that the first base station is sent by the ethernet link
Data, and the downlink data is sent to the terminal by the air interface；
The terminal, for receiving what the first base station and at least one described second base station were sent by the air interface
The downlink data.
7. a kind of data transmission method based on super cell characterized by comprising
First base station receives the upstream data that terminal is sent, and demodulates the upstream data and obtain the first Physical Uplink Shared Channel
PUSCH solves adjusting data and the first hybrid automatic repeat-request HARQ identification information；
The 2nd HARQ identification information of at least one second base station transmission is received by ethernet link；
When the first HARQ identification information is denoted as failure and the 2nd HARQ identification information is denoted as successfully, by it is described with
The 2nd PUSCH that too network chain road obtains at least one second node B cache solves adjusting data, and the 2nd PUSCH is demodulated
Data are sent to equipment of the core network, wherein the 2nd HARQ identification information and the 2nd PUSCH solution adjusting data be it is described extremely
Few second base station demodulates what the received upstream data obtained.
8. the method according to the description of claim 7 is characterized in that being denoted as failure in the first HARQ identification information and connecing
When the 2nd HARQ identification information that all second base stations for receiving are sent all is denoted as unsuccessfully, obtain it is described at least one the
The soft bit information of two base stations, and merge in local soft bit information with the soft bit information of at least one second base station
After success, the data after merging are sent to the equipment of the core network.
9. according to the method described in claim 8, it is characterized in that, by local soft bit information and it is described at least one the
After the soft bit information of two base stations merges failure, the soft bit information of next second base station is obtained, and in local soft bit
After information merges successfully with the soft bit information of next second base station, the data after merging are sent to the core net
Equipment.
10. a kind of data transmission method based on super cell characterized by comprising
Second base station receives the upstream data that terminal is sent, and demodulates the upstream data and obtain the second Physical Uplink Shared Channel
PUSCH solves adjusting data and the second hybrid automatic repeat-request HARQ identification information；
The 2nd PUSCH solution adjusting data is cached, and the 2nd HARQ identification information is sent to first base station by ethernet link；
The first base station determine according to demodulate the first HARQ identification information that the upstream data obtains be denoted as failure and
When the 2nd HARQ identification information is denoted as successfully, the 2nd PUSCH of caching is demodulated by the ethernet link
Data are sent to 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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| CN102186265A (en) * | 2011-05-04 | 2011-09-14 | 京信通信系统（中国）有限公司 | Distributed base station and networking method thereof |
| CN102742317A (en) * | 2011-11-25 | 2012-10-17 | 华为技术有限公司 | Communication system, communication method and communication apparatus |
| CN104170303A (en) * | 2014-01-29 | 2014-11-26 | 华为技术有限公司 | Data transmission method, device and system |
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| US20100067604A1 (en) * | 2008-09-17 | 2010-03-18 | Texas Instruments Incorporated | Network multiple antenna transmission employing an x2 interface |
| EP2166804A1 (en) * | 2008-09-17 | 2010-03-24 | Panasonic Corporation | Deactivation of semi-persistent resource allocations in a mobile communication network |
| CN102208967B (en) * | 2010-03-31 | 2014-04-09 | 中兴通讯股份有限公司 | Non-adaptive repeat power control method and device for long term evolution (LTE) terminal |
| CN102916732B (en) * | 2011-08-02 | 2017-10-03 | 南京中兴软件有限责任公司 | A kind of method, system and control station for realizing super cell data transfer |
| KR20130108931A (en) * | 2012-03-26 | 2013-10-07 | 주식회사 팬택 | Transmitting method for hybrid arq information and receiving method for hybrid arq information |
| CN103391159B (en) * | 2012-05-11 | 2016-06-01 | 上海贝尔股份有限公司 | The method of HARQ conflict and PUSCH retransmission collisions in process TDD |
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| CN102186265A (en) * | 2011-05-04 | 2011-09-14 | 京信通信系统（中国）有限公司 | Distributed base station and networking method thereof |
| CN102742317A (en) * | 2011-11-25 | 2012-10-17 | 华为技术有限公司 | Communication system, communication method and communication apparatus |
| CN104170303A (en) * | 2014-01-29 | 2014-11-26 | 华为技术有限公司 | Data transmission method, device and system |
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