CN106411450B - A kind of configuration of downlink common data channels and its data transmission method - Google Patents
A kind of configuration of downlink common data channels and its data transmission method Download PDFInfo
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Abstract
The present invention provides a kind of downlink common data channels（DPDC）Configuration and its data transmission method, applied to super-intensive networking, wherein, the collocation method of DPDC includes the configuration of super base station, the configuration of cell clump, the configuration of cell, the configuration of user and the configure-ack of DPDC.Wherein, the configuration of super base station is that the cell clump of DPDC is used according to the decision-making of interface-free resources allocation algorithm, and distributes interface-free resources to cell clump；The configuration of cell clump is to be determined to participate in the user of DPDC scheduling according to scheduling user group allocation algorithm, and generates SUG set.The data transmission method of DPDC includes extracting data to be sent in message buffer；And common data frame is encapsulated as to the data compression of extraction, each cell and its each user to DPDC are sent by DPDC, user receives decompression common data frame and obtains its corresponding data.Present invention decreases the inter-cell interference under UDN networkings.
Description
Technical field
The present invention relates to wireless communication field, is suitable for super-intensive networking UDN (Ultra more particularly to one kind
Dense Network), the downlink common data channels based on LTE (Long Term Evolution, Long Term Evolution) standard
The configuration of DPDC (Downlink Public Data Channel) and its data transmission method.
Background technology
The KPI (Key Performance Indicator, Key Performance Indicator) of the 5G systems defined according to 5G white paper
Index, compared to 4G, 5G need to provide more than 1000 times of network capacity, there is provided the extremely low time delay of 10-100 times of user rate, 1ms and
The concatenation ability of 100 times of number of terminals.UDN (super-intensive networking) technology is to realize the crucial candidate technologies of 5G targets.UDN is main
Theory be：Increase the deployment density of low power base station by hot zones in Cellular Networks, so as to lifting system capacity and
The network coverage, and while reducing extend to energy consumption.
As shown in Figure 1, UDN is based on the network of LTE standards, the base station in network is one and supports management BBU
The super base station of (Building Base band Unit, baseband processing unit) resource pool (or BBU Cloud).Super base station
It is capable of the resource of centralized and unified management multiple BBU, RRU (Radio Remote Unit, radio frequency remoto module), can be achieved at the same time
The business of multiple cells.The cell of super BTS management meets the characteristics of UDN dense deployments.Multiple neighbouring cells can form
One cell clump CC (Cell Clump), Fig. 1 include two cell clumps.
The network architecture point different with traditional network architecture mainly has at 2 points：Base station is to support BBU resource pools, possess collection
The super base station of middle all local resource abilities of unified management；The cell of the BTS management possesses the characteristics of UDN dense deployments.Its
In,
Super base station SBS (Super Base-station) is used to collect the base band for neutralizing a large amount of cells of real-time management, radio frequency
The efficiency of resource, the calculated performance of super base station SBS while the data scale of processing, collection and distribution data is all much larger than general
Logical base station.One super base station SBS can manage one or more cell clump CC.
And cell clump CC is the set for some cells (Cell) for possessing following feature：1) cell will meet UDN networkings field
Scape requirement；2) overlay area of each cell is neighbouring on geographical space in cell clump CC, and the spacing distance of cell is no more than two-by-two
1000 meters；3) resource of each cell in cell clump CC, data can be distributed unitedly by super base station SBS, dispatched；4) cell clump CC
Cell semi-static can adjust.
Under UDN networking models, compared to traditional network, in identical space for its deployment, base station number in UDN networks,
Number of users has tens times even increase of hundreds of times, and every square kilometre can carry 106A connection number, each base station covering
Scope very little, from several square metres to small to several meters of the distance between tens of square meters, base station, thereupon, radio open it is upper
Downlink interference level can also dramatically increase, and can seriously affect the KPI indexs such as power system capacity, access delay, therefore, how reduce dry
Disturb be UDN success application key issue.
At present, the One common solution of the interference problem of UDN networkings has：Access point is lifted by advanced receivers technology
And the interference rejection capability of terminal；Based on interference eliminate, interference alignment and Interference Cancellation access point and terminal room assistance come
Mitigate interference level；Based on the special synchronization of small Quarter Design and find signal, and using enhancing cell synchronous find and
Technology, energy power-assisted find and eliminate in interference.These method majorities are constant or only make small tune based on existing network formats
Whole and proposition conventional art.These technologies have already passed through the research and development of longer term, and performance gain is difficult to have bigger
Break through, it is difficult to meet the needs of new generation network development.
In the case that the interference problem of UDN networkings is disturbed outside without considering network, it can be divided into outside intra-cell interference and cell
Disturb two parts.Since the base station deployment of UDN networks is intensive very big, its inter-cell interference is remote to the influence degree of Signal to Interference plus Noise Ratio
It is the core place for solving interference problem more than general network networking scene.Inter-cell interference is substantially due to adjacent more
Caused by different user in a cell is received or clashed when sending data in same interface-free resources.And inter-cell interference is again
Downlink interference and uplink interference can be divided into, the Forming Mechanism of both interference is again different.The downlink interference of specific user
Downlink signal from the neighbor cell of place serving cell, and the uplink interference of cell then mostly come from it is adjacent small
The uplink transmitting signal of the user in area (during random access, intra-cell users will also result in larger interference).Due to user behavior
Variable and changeable, uplink interference deals with more difficult compared to downlink interference.From wireless traffic model and various data
The characteristics of business, understands that, in foreseeable future, LTE and 5G networks will be based on downstream data traffic, the data of downlink
Volume of business will be far longer than the data service capacity of uplink, therefore solve downlink interference problem and be only the dry of solution UDN networkings
Disturb the key of problem.
The content of the invention
In view of the foregoing deficiencies of prior art, it is an object of the invention to provide a kind of downlink common data channels
Configuration and its data transmission method, for solving, inter-cell interference is big under UDN networkings in the prior art, edge user throughput is difficult
To be lifted, access the problems such as difficulty.
In order to achieve the above objects and other related objects, the present invention provides a kind of configuration side of downlink common data channels
Method, applied to super-intensive networking, the collocation method of the downlink common data channels includes：Step S11, the public number of downlink
It is believed that configuration of the road on the super base station of the super-intensive networking：The super base station is according to interface-free resources allocation algorithm decision-making
The cell clump of the downlink common data channels is used in the super-intensive networking, is that each described cell clump distribution is corresponding
Interface-free resources；And the first startup configuration order is issued using the cell clump of the downlink common data channels to each；Step
S12, configuration of the downlink common data channels on the cell clump：Believed for each using the downlink common data
The cell clump in road, after the first startup configuration order is received, determines to participate in institute according to scheduling user group allocation algorithm
The user of downlink common data channels scheduling is stated, the user for participating in the downlink common data channels scheduling is generated into SUG set；
And gathered according to the SUG, all cells for including user in SUG set to subordinate issue the second startup configuration order；
Step S13, configuration of the downlink common data channels on the cell：Gather for each subordinate comprising the SUG
The cell of middle user, after the second startup configuration order is received, to being included in SUG set for its subordinate
User issue the 3rd startup configuration order；Step S14, configuration of the downlink common data channels on user：For institute
Each user in SUG set is stated, after the 3rd startup configuration order is received, it is public to obtain its corresponding described downlink
The frequency spectrum distribution information of data channel altogether；Step S15, the configure-ack of the downlink common data channels：In the SUG set
User after frequency spectrum distribution information is obtained, start configuration order according to the described 3rd and returned to the corresponding cell
3rd confirmation message；The cell starts configuration order to corresponding according to the 3rd confirmation message and described second is received
The cell clump returns to the second confirmation message；The cell clump is opened according to second confirmation message received and described first
Dynamic configuration order returns to the first confirmation message to the super base station；When the super base station receives all uses downlink
After first confirmation message that the cell burst of common data channels goes out, the downlink common data channels configure
Into.
Alternatively, the collocation method of the downlink common data channels further includes：The super base station is according to configuration cycle
Timing carrys out the configuration whether decision-making starts the downlink common data channels according to judgment mechanism；Wherein, the configuration cycle is
It is pre-set.
Alternatively, the judgment mechanism is the cell clump for being dependent on super base station subordinate described in the super-intensive networking
Relevant information：If the relevant information meets configured threshold, the configuration of the downlink common data channels is carried out；Otherwise,
Then stop the configuration of the downlink common data channels；Wherein, the configured threshold is pre-set；The relevant information bag
Include number of users, downlink traffic statistics, user's average throughput and the QoS letters of each cell clump in the super base station
Breath.
Alternatively, the stopping configuration of the downlink common data channels specifically includes：The super base station is to each use
The cell clump of the downlink common data channels issues the first stopping configuration order；Each cell clump receives described
After first stops configuration order, the second stopping is issued to the cell on all downlink common data channels of its subordinate
Configuration order；Cell on each downlink common data channels receive it is described second stop configuration order after, to comprising
User in gathering to the SUG issues the 3rd stopping configuration order；User in each SUG set receives the 3rd and stops
Only after configuration order, return to the 3rd to its corresponding described cell and stop configure-ack information；Each downlink common data
The cell on channel receives the 3rd stopping configure-ack letter of the user in all SUG set of its subordinate
After breath, return to second to its corresponding described cell clump and stop configure-ack information；It is each to be believed using the downlink common data
The cell clump in road receives described second of the cell on all downlink common data channels of its subordinate and stops matching somebody with somebody
After putting confirmation message, return to first to the super base station and stop configure-ack information；The super base station receive it is all
After stopping configure-ack information using described the first of the cell clump of the downlink common data channels, frequency spectrum resource is discharged, is stopped
The only configuration of the downlink common data channels.
Alternatively, in the step S11, the interface-free resources allocation algorithm includes：Step S21, in the super-intensive group
In net, all cells of the super base station subordinate and its traffic statistics data of user are gathered；Step S22, according to the traffic statistics number
According to calculating the average data throughput RS and edge throughput RE of each cell clump in the current configuration cycle；Step
S23, according to the traffic statistics data, calculates the interference matrix ICC between each cell clump in the current configuration cycle；Step
S24, predicts the downlink data demand of user in next configuration cycle, calculates total downlink data amount of each cell clump
SD；Step S25, the SCC set that the cell clump of downlink common data channels to be launched is formed empty, and then will meet following bar
I-th of cell clump of one of part includes the SCC set；Wherein, condition is：(ICC(i)>=TH_I) ＆＆ (SD (i)>=TH_
) or (RE (i)) SD<TH_RE)&&(SD(i)>=TH_SD)；TH_I, TH_SD, TH_RE and TH_SD are pre-set；Step
S26, judges whether the SCC set is empty：If it is, stop the configuration of the downlink common data channels；If it is not, then
According to the interference matrix information configuration interface-free resources of the cell clump using the downlink common data channels.
Alternatively, in the step S12, the scheduling user group allocation algorithm includes：Step S31, determines whether new
The user of access：If so, then jump to step S32；If it is not, jump to step S33；Step S32, by what is newly accessed
User is added in the SUG set；Step S33, judges whether the SUG set is empty set：If empty set, then institute is recycled
The interface-free resources of downlink common data channels are stated, and jump to step S38；If not empty set, then step S34 is jumped to；Step
Rapid S34, judges whether there is untreated user in the SUG set：If so, then jump to step S35；If it is not,
Jump to step S38；Step S35, an optional user from SUG set；And judge whether the user of selection has discharged number
According to link, if releasing data link, step S37 is jumped to；If do not discharged, step S36 is jumped to；Step S36,
Judge whether the user of selection is eligible：If do not met, step S37 is jumped to；If met, jump directly to walk
Rapid S34；Wherein, the condition is：(SINR<=TH_SINR) ＆＆ (D>=TH_D)；SINR represents that the signal of user and interference add
Noise ratio；D represents the data volume of downlink transfer；TH_SINR and TH_D is pre-set；Step S37, by the user of selection from
Deleted in the SUG set, and jump to step S33；Step S38, terminates.
The invention also discloses a kind of data transmission method of downlink common data channels, the downlink common data channels
It is to be configured using the collocation method of the downlink common data channels as described in any one in claim 1~6；It is and described
Downlink common data channels be built upon the super-intensive networking at least one cell clump, multiple cells and multiple users it
Between；The data transmission method of the downlink common data channels includes：Step S41, the cell clump are obtained from message buffer
Take the SUG of its subordinate gather in all users in data to be sent next dispatching cycle；Step S42 is described small
All users are encapsulated as common data frame by Qu Cong in data compression to be sent next dispatching cycle, and pass through the downlink
Common data channels are sent to each cell of the cell clump subordinate；Step S43, each cell is by under described
Row common data channels by the common data frame be forwarded to it includes the SUG set in multiple users in；Step
S44, each user receive and decompress the common data frame to obtain its corresponding data；Then the downlink is passed through
Common data channels return to the 3rd to the corresponding cell and receive confirmation message；Step S45, each cell are receiving
After belonging to the 3rd reception confirmation message of all users of its subordinate in the SUG set, pass through the public number of the downlink
It is believed that road send the second reception confirmation message to its corresponding described cell burst；Step S46, the cell clump receive each institute
State described the second of cell receive confirmation message after, the pointer of the mobile message buffer, and jump to again step S41 after
It is continuous to carry out data transmission.
Alternatively, configuration of the data transmission method of the downlink common data channels only after the completion of DPDC configurations
Circulation carries out in cycle；When starting to next configuration cycle, the super base station of the super-intensive networking will foundation
Judgment mechanism comes whether decision-making starts the downlink common data channels：If started, it is public to reconfigure the new downlink
Data channel altogether, and after configuration is complete, jump to step S41 and carry out data biography using the new downlink common data channels
It is defeated；Otherwise, then stop configuring the downlink common data channels, and stop using the downlink common data channels to carry out data
Transmission.
Alternatively, in the step S42, the cell clump is by all users in data to be sent next dispatching cycle
Compression, which is encapsulated as common data frame, to be included：Increase User ID information header before the data to be sent of each user；Concatenation increases
All data to be sent of User ID information header are added；According to the data after compression algorithm compression concatenation；Number after concatenation
According to preceding addition protocol fields, and it is packaged into the common data frame.
Alternatively, the compression algorithm is dynamic select according to data type, QoS demand and compression ratio.
As described above, configuration and its data transmission method of a kind of downlink common data channels of the present invention, are suitable for
LTE/LTE-A standards, the 5G or more of new generation radio network techniques based on LTE standard evolution, it is based on by being construction, and with
Cell clump (Cell Clump, abbreviation CC) downlink common data channels DPDC (Downlink Public Data Channel,
Abbreviation DPDC) interference of the user on DPDC in CC is eliminated, volume of transmitted data is reduced by data compression algorithm, improves nothing
Line is eated dishes without rice or wine the utilization rate and user throughput of downlink physical resource, reduces the inter-cell interference under UDN networkings.
Brief description of the drawings
Fig. 1 is shown as the structure diagram of UDN super-intensive networkings.
Fig. 2 is shown as a kind of flow diagram of the collocation method of DPDC disclosed by the embodiments of the present invention.
Fig. 3 is shown as eating dishes without rice or wine in the collocation method of DPDC disclosed by the embodiments of the present invention a kind of the flows of resource allocation methods
Schematic diagram.
Fig. 4 is shown as dispatching the stream of user group allocation algorithm in the collocation method of DPDC disclosed by the embodiments of the present invention a kind of
Journey schematic diagram.
Fig. 5 is shown as the stopping configuration flow signal of DPDC in the collocation method of DPDC disclosed by the embodiments of the present invention a kind of
Figure.
Fig. 6 is shown as a kind of flow diagram of the data transmission method of DPDC disclosed by the embodiments of the present invention.
Fig. 7 is shown as the configuration of DPDC disclosed by the embodiments of the present invention and the flow that matches of the data transfer of DPDC is shown
It is intended to.
Fig. 8 is shown as the structure diagram of UDN networkings disclosed in the embodiment of the present invention 3.
Component label instructions
S11~S15 steps
S21~S26 steps
S31~S38 steps
S41~S46 steps
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that in the case where there is no conflict, following embodiments and implementation
Feature in example can be mutually combined.
It should be noted that the diagram provided in following embodiments only illustrates the basic structure of the present invention in a schematic way
Think, component count, shape and size when only display is with related component in the present invention rather than according to actual implementation in illustrating then
Draw, kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its assembly layout kenel
It is likely more complexity.
The downlink inter-cell interference Producing reason of UDN networkings is due to adjacent multiple cells while is sent out for different user
Different data are penetrated to produce.In non-dense set networking scene, this interference problem can pass through frequency, the planning and optimization of power
Solve.But in UDN networkings, since base station station spacing is very small, neighbor cell is large number of, therefore passes through traditional rule
Draw and prioritization scheme can not effectively reduce downlink inter-cell interference.The configuration of DPDC proposed by the present invention and its transmission side data
Method, interference problem is solved from the new angle of data field, by Efficient Compression algorithm by the use of all services in cell clump CC
The downlink data at family is encapsulated into unified common data frame (Public Data Frame, abbreviation PDF), and passes through cell clump
The DPDC that CC is defined is sent, and so the received data on DPDC of all users in cell clump CC are all consistent, therefore
For some specific user, the downlink signals of all cells in its CC coverage received be all it is consistent, this
A little signals are all useful signals, simultaneously because each cell neighbor distance very little in CC, therefore from the more of different neighbor cells
Road signal reaches the time difference of same user in the range of it can bear, and the influence of resulting similar multipath can pass through
CP (the Cycle of OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexi)
Prefix, cyclic prefix) technology solution.Whether the configuration of the DPDC of the present invention and its data transmission method effectively depend primarily upon
Following three key element：
First, the compression performance gain of common data frame PDF
The compression ratio of common data frame PDF directly affects the availability of frequency spectrum.The data carried on DPDC are multiple users
Data, for some user, there are redundant data, is unfavorable for lifting spectrum utilization efficiency.Hoist capacity and frequency spectrum effect
The favorable factor of rate is the hair diversity effect of data compression and multiple signals, can be reduced to frequency spectrum resource by data compression
Occupancy, compression ratio is higher, then is more conducive to lifting system capacity and the availability of frequency spectrum.
In terms of the compression performance gain of common data frame PDF comes from following three：
(1) more high compression ratio can be used based on the stronger super base station of computing capability while decompression calculations performance requirement is not
High new compression algorithm：Such as：FreeArc-m3 has been over the compression ratio of WinRAR-m5, and compression speed is fast close to 1
Times, decompression speed is suitable.
(2) compression gains that multiplicity of subscriber is brought：The transmission data that gain is derived between different user, which exist, to be repeated
Information.
(3) different data types is directed to, is moved according to certain QoS (Quality of Service, service quality) criterion
State selects optimal compression algorithm type：It is optimal according to definite QoS criterions selection for different types of data and QoS demand
Compression algorithm.Common QoS criterions include compression ratio, compression time, decompression time, whether allow to damage the factors such as transmission,
Since QoS criterions are the optimization based on multiple target, certain multiple-objection optimization criterion can be pre-set, for example determines compression, decompression
Ensure that compression ratio is maximum on the premise of contracting maximum time.
2nd, the real-time of common data frame PDF compressions and decompression
From the point of view of the dispatching cycle of LTE, minimum 1 TTI (Transmission Time Interval, during transmission
Between be spaced) need to complete user scheduling, therefore it is required that base station completes data preparation and the time of scheduling also must be at 1
Within millisecond, and for a user, the time that decompression receives data also must be within 1 millisecond.It is computational to influence base station
The key point of energy is the acquisition time of multi-user data, common data frame PDF compressed package generated times.One cell clump CC from
The downlink data for being dispatched to the user of DPDC is required to be obtained in time by base station scheduling module, therefore it is required that the resource of cell and
Data allow for centralized management, and similar to the BBU-Cloud patterns under C-RAN network environments, base station system can be quick
Obtain the related letter of the business datum for the user that all cells and these cells are serviced, Radio Resource etc. in a cell clump CC
Breath.The characteristics of being disposed due to the super-intensive of UDN networkings, selects centralization, the mode of resource pool to be managed collectively one or more small
The resource of all base stations and relative users is relatively reasonable solution under area clump CC.Therefore, lower of cell clump CC is useful
The Quick Acquisition of the data at family can reach under conditions of suitable base station architecture is selected.Base station data compressed package generates
Time depends on the computing capability of base station, and according to the framework of centralized management, the computing capability of base station is guaranteed, while by
In the fast development of parallel computing in recent years, it can ensure that the calculating time of data compression meets the requirements.For user
Speech, due to the fast development of the design of current terminal polycaryon processor, technique and production technology, and the hair of rapid decompression contracting technology
Exhibition, enables to the calculating time of decompression also to disclosure satisfy that the requirement of real-time, by selecting high compression ratio but decompression meter
The not high new algorithm of calculation performance can also reduce the performance requirement to user.
3rd, user's management and running on DPDC
DPDC disclosed by the invention can be with dynamic configuration.This mainly has from the aspect of two：One is consider to assist from LTE
The smooth evolution of view, compatible existing channel management and protocol, the second is in order to meet the needs of network agile deployment, with
And adapt to the variability of customer service.User's management and running on DPDC need to consider following aspects：
1) DPDC Algorithm of Dynamic Configuration
DPDC can carry out dynamic configuration according to user distribution model, user's traffic model, can be according to UDN networkings
QoS design objects pre-set the entry condition of DPDC configurations, once meeting this condition, then start DPDC Dynamic Configuration Process,
Into the DPDC data-transmission modes based on cell clump CC, do not meet this condition and then stop DPDC data-transmission modes.
DPDC Algorithm of Dynamic Configuration further includes the allocation processing to DPDC interface-free resources.Passed in view of DPDC and general data
Defeated pattern needs to coexist, therefore how to distribute DPDC frequency spectrum resources and conventional channel frequency spectrum resource is the pass for influencing the availability of frequency spectrum
Key factor.
2) allocation algorithm of scheduling user group (Scheduled UE Group, the abbreviation SUG) set of DPDC
Which user need to be dispatched in the SUG of DPDC need combine QoS targets, subscriber channel state, neighbor cell or
The combined factors such as the disturbed condition of cell clump CC, channel resource allocation algorithm judge to accept or reject.
Embodiment 1
Applied present embodiment discloses a kind of in LTE/LTE-A standards, the 5G or more of new generation nothings based on LTE standard evolution
The physical layer of line network technology, suitable for the collocation method of the DPDC of UDN networkings, wherein UDN networkings as shown in Figure 1, including super
Level base station SBS, multiple cell clump CC and multiple cells, each super one or more cell clump CC of base station SBS management, one
A cell clump includes multiple cells.
The collocation method of the DPDC of the present embodiment as shown in Fig. 2, including：
The configuration of step S11, DPDC on super base station：Super base station SBS judgements, which start or stop, configures DPDC, and
Start in configuration process, to distribute the frequency spectrum resource of DPDC using the cell clump CC of DPDC：
DPDC the configuration of super base station SBS be based on cell clump CC, have under general cell clump CC it is tens of even
Cell under hundreds of traditional senses.In the case where number of objects is larger, according to statistical law, the change of its average behavior is base
It is slowly varying in a longer measurement period, therefore be big time scale and small time scale two by DPDC Function Decompositions
A level is realized.The configuration of DPDC realizes the slow processing procedure based on larger time scale and larger object scale.Time
Scale, i.e. configuration cycle generally use common traffic statistics cycle, such as 30 minutes and 60 minutes, and default value is set to 60 minutes.
Super base station SBS sets timer according to the configuration cycle of DPDC, periodically judges its subordinate's according to judgment mechanism
Whether the relevant information of each cell clump CC meets the configured threshold for starting DPDC：
If relevant information is unsatisfactory for configured threshold, stop the configuration of DPDC；
If relevant information meets configured threshold, continue the configuration of DPDC.
Wherein, configured threshold be can be pre-set.Also, the relevant information of each cell clump CC is according to configuration cycle
In (60 minutes), the number of users of each cell clump CC of super base station SBS subordinate, downlink traffic statistics, user averagely gulp down
Spit the information such as rate, QoS.
After relevant information meets configured threshold, super base station SBS makes according to DPDC interface-free resources allocation algorithm decision-makings
Suitable interface-free resources are distributed with the cell clump CC of DPDC, and for each cell clump CC using DPDC, as shown in figure 3, including：
Step S21, gathers the cell in all cell clump CC of super base station SBS subordinate and its traffic statistics data of user；
Step S22, according to traffic statistics data, calculates the average data throughput of each cell clump CC in current configuration cycle
RS and edge throughput RE；
Step S23, according to traffic statistics data, calculates in current configuration cycle, each cell clump of super base station SBS subordinate
Interference matrix ICC between CC；
Step S24, predicts the downlink data demand of user in next configuration cycle, calculates the total of each cell clump CC
Downlink data amount SD；
Step S25, the SCC set that the cell clump CC of DPDC to be launched is formed empties, and will meet one of following condition
I-th of cell clump bring into SCC set.
Condition is：(ICC(i)>=TH_I) ＆＆ (SD (i)>=TH_SD)；Or (RE (i))<TH_RE)&&(SD(i)>=
TH_SD)；Wherein, TH_I, TH_SD, TH_RE and TH_SD are pre-set；
Step S26, judges whether SCC set is empty：
If it is, stop the configuration of DPDC；
Otherwise, then according to the interference matrix information configuration interface-free resources of the cell clump CC using DPDC.
In interface-free resources allocation algorithm, gulped down on the average data throughput RS in step S22~step S24, edge
The algorithm of the interference matrix ICC between rate RE and each cell clump CC is spat, and according to interference matrix information configuration in step S26
Interface-free resources, in wireless communication field, grasp, are no longer repeated herein extensively for those skilled in the art.
After suitable interface-free resources are distributed for each cell clump CC using DPDC, super base station SBS makes to each
The the first startup configuration order for starting DPDC is issued with the cell clump CC of DPDC.
The configuration of step S12, DPDC on cell clump CC：The cell clump CC configurations of DPDC are to use DPDC for each
Cell clump CC and carry out：
Cell clump CC is after the first startup configuration order that super base station SBS is sent is received, according to scheduling user's component
Determine to participate in the user of DPDC scheduling with algorithm, the user for participating in DPDC scheduling is generated into SUG set.User group distribution is dispatched to calculate
Method is the processing based on small time scale, updates SUG set according to the real-time status of each user by cell clump CC.Scheduling is used
The small time scales such as measurement report of the input data of family group allocation algorithm including user, real-time counter, subscriber signaling event
Information.Dispatch the specific step of user group allocation algorithm as shown in figure 4, including：
Step S31, determines whether the user newly accessed：
If so, then jump to step S32；Otherwise, step S33 is jumped to；
Step S32, the user newly accessed is added in SUG set；
Step S33, judges whether SUG set is empty set：
If empty set, then the interface-free resources of DPDC are recycled, and jump to step S38；
If not empty set, then step S34 is jumped to；
Step S34, judges whether there is untreated user in SUG set：
If so, then jump to step S35；Otherwise, step S38 is jumped to；
Step S35, an optional user from SUG set；And judge whether the user of selection has discharged data link：If
Data link is released, then jumps to step S37；If do not discharged, step S36 is jumped to；
Step S36, judges whether the user of selection is eligible：
If do not met, step S37 is jumped to；If met, step S34 is returned directly to；
Wherein, (SINR<=TH_SINR) ＆＆ (D>=TH_D)；SINR represents the Signal to Interference plus Noise Ratio of user；D
Represent the data volume of downlink transfer；TH_SINR and TH_D is pre-set；
Step S37, the user of selection is deleted from SUG set, and jumps to step S33；
Step S38, terminates.
After SUG set is generated, all cells that cell clump CC includes user in SUG set to subordinate issue second
Start configuration order.
The configuration of step S13, DPDC on cell：The cell configuration of DPDC is to gather for each subordinate comprising SUG
The cell of middle user.
Each subordinate includes the cell of user in SUG set after the second startup configuration order is received, to its subordinate
Be included in SUG set in user issue the 3rd startup configuration order；
The configuration of step S14, DPDC on user：The user configuration of DPDC is for each user in SUG set.
Each user in SUG set obtains the frequency of its corresponding DPDC after the 3rd startup configuration order is received
Spectrum distribution information.
The configure-ack of step S15, DPDC：DPDC has carried out starting configuration in cell clump CC, cell and user, and
After user also obtains the frequency spectrum distribution information of corresponding DPDC, it is also necessary to which the information that DPDC configurations are completed is back to super base
Stand SBS, in order to which super base station SBS is managed DPDC.
The configure-ack of DPDC specifically includes：
User in SUG set starts configuration order to corresponding small after frequency spectrum distribution information is obtained according to the 3rd
Area returns to the 3rd confirmation message (ACK)；
Cell receives corresponding 3rd confirmation message (ACK), and according to the 3rd confirmation message (ACK) received and second
Start configuration order, the second confirmation message (ACK) is returned to corresponding cell clump CC；
Cell clump CC receives corresponding second confirmation message (ACK), and according to the second confirmation message (ACK) received and
First starts configuration order, and the first confirmation message (ACK) is returned to super base station SBS；
After super base station SBS receives the first confirmation message (ACK) that all cell clump CC using DPDC are sent,
The configuration of DPDC is completed.
Further, super base station SBS judges that its subordinate's is each according to the configuration cycle timing of DPDC according to judgment mechanism
When the relevant information of a cell clump CC is unsatisfactory for configured threshold, then stop DPDC configuration, its process as shown in figure 5, including：
Super base station SBS is judged after need to stopping DPDC configurations, is issued first to each cell clump CC using DPDC and is stopped
Only configuration order；
After each cell clump CC receives the first stopping configuration order, is issued to the cell on all DPDC of its subordinate
Two stop configuration order；
After cell on each DPDC receives the second stopping configuration order, issued to the user covered in SUG set
3rd stops configuration order；
After user in each SUG set receives the 3rd stopping configuration order, return to the 3rd to its corresponding cell and stop
Only configure-ack information (ACK)；
Cell on each DPDC receives the 3rd stopping configure-ack letter of the user in all SUG set of its subordinate
After ceasing (ACK), return to second to its corresponding cell clump CC and stop configure-ack information (ACK)；
Each cell clump CC using DPDC receives second of the cell on all DPDC of its subordinate and stops configuration really
After recognizing information (ACK), return to first to super base station SBS and stop configure-ack information (ACK)；
Super base station SBS stops configure-ack information in receive all cell clump CC using DPDC first
(ACK) after, frequency spectrum resource is discharged, stops configuration DPDC.
Embodiment 2
Present embodiment discloses a kind of data transmission method of DPDC, wherein, DPDC is built upon at least the one of UDN networkings
Between a cell clump CC, multiple cells and multiple users, and DPDC is managed by super base station SBS.
As shown in fig. 6, the data transmission method of the DPDC of the present embodiment includes：
Cell clump CC on step S41, DPDC obtains all users in the SUS set of its subordinate from message buffer
In the data that next dispatching cycle is to be sent；
The data transfer of DPDC is built upon on the basis of DPDC configuration completions.Only after the completion of DPDC configurations, cell
Clump CC just obtains data from from message buffer.
All users are encapsulated as public by step S42, cell clump CC in data compression to be sent next dispatching cycle
Data frame PDF, and sent by DPDC to each cell of cell clump CC subordinate：
The data transmission method of the DPDC of the present embodiment is that the downlink data of all users is encapsulated into the public of unification
In data frame PDF, then transmitted by DPDC.All users so in cell clump CC received data on DPDC are all one
Cause.For the ease of distinguishing the data of each user, cell clump CC is when DPDC carries out data transmission, to the lower line number of user
According to being re-compressed and having been encapsulated, specifically include：
Increase its User ID information header before the data to be sent of each user.
The data to be sent of all users of User ID information header will be added.
According to the data after compression algorithm compression concatenation：
Wherein, the compression algorithm for data has many kinds, and the compression algorithm of the present embodiment is dynamic select, it is
Cell clump CC (such as determines compression, decompression according to the constraint informations such as data type, QoS demand and pre-set criterion
Ensure that compression ratio is maximum on the premise of maximum time) come the optimal compression method selected.
Protocol fields are added before data after concatenation, and are packaged into common data frame PDF.
Step S43, each cell by DPDC by common data frame PDF be forwarded to it includes SUG set in it is multiple
In user；
Step S44, the user during each SUG gathers receive and decompress common data frame PDF to obtain its each correspondence
Data；Then the 3rd is returned to corresponding cell receive confirmation message (ACK) by DPDC：
At this time, the common data frame PDF that the user in each SUG set receives is duplicate, it is to public number
Unziped it according to frame PDF, then the User ID information header in data, obtain its corresponding data.
Step S45, each cell belong to the 3rd reception confirmation letter of all users of its subordinate in SUS set is received
After ceasing (ACK), second is sent to its corresponding cell clump CC by DPDC and receive confirmation message (ACK)；
After step S46, cell clump CC receive the second reception confirmation message (ACK) of each cell, mobile messaging buffering
The pointer in area, and jump to step S41 again and continue data transfer.
Further, the data transfer of the DPDC of the present embodiment is that the configuration with DPDC is matching used, the data of DPDC
Transmission is only circulated within the configuration cycle after the completion of DPDC configurations and carried out.When starting to next configuration cycle, it is necessary to
DPDC is rejudged according to judgment mechanism (judgment mechanism in such as embodiment 1), the process of judgement is not repeated herein.
If it is determined that needing to start configuration DPDC, then reconfigure new DPDC, and after configuration is complete, reuse new DPDC into
Row data transfer；Otherwise, then stop configuration DPDC, and do not use DPDC and carry out data transmission.
DPDC configuration and DPDC data transfer match process as shown in fig. 7, comprises：
Whether super base station SBS judges each cell clump CC of subordinate according to DPDC configuration process according to configuration cycle timing
Meet the configured threshold for starting DPDC：Continue DPDC configurations if threshold requirement is met, otherwise perform and stop DPDC mistakes
Journey；
Super base station SBS uses the cell clump CC of DPDC according to the decision-making of DPDC interface-free resources allocation algorithms, and is each small
Area clump CC distribute suitable interface-free resources；
Super base station SBS starts DPDC configuration orders (first to needing the cell clump CC for starting DPDC configuration process to issue
Start configuration order)；
Cell clump CC, which is received, starts DPDC configuration orders (first starts configuration order), is calculated according to scheduling user group distribution
Method determines to participate in the user of DPDC scheduling, generation SUG set；
All cell Cell that cell clump CC includes user in SUG set to subordinate issue startup DPDC configuration orders
(second starts configuration order)；
Cell Cell, which is received, starts DPDC configuration orders (second starts configuration order), to the use covered in SUG set
Family, which issues, starts DPDC configuration orders (the 3rd starts configuration order)；
User, which receives, starts DPDC configuration orders (the 3rd starts configuration order), and obtains the frequency spectrum distribution information of DPDC,
Return to ACK；
Cell Cell is after the ACK for the startup DPDC configuration orders that all associated users return is received, to cell clump CC
Return and start DPDC configuration orders ACK；
Cell clump CC is returned to super base station SBS after the ACK of all cell Cell is received and is started DPDC configuration orders
ACK；
Cell clump CC obtains next needs dispatching cycle of each user from SUG set in the message buffer of all users
The data of transmission；
Cell clump CC (for example determines pressure according to constraint informations such as data type, QoS demands, according to pre-set criterion
Contracting, ensure that compression ratio is maximum on the premise of decompression maximum time) optimal compression algorithm is selected, by the data frame pressure of each user
Contract, be packaged into common data frame PDF, and issue each cell Cell；
Cell Cell receives common data frame PDF, and issues common data frame PDF to associated user by DPDC；
For user in DPDC receiving public data frame PDF, decompression, obtains corresponding data, and returns to ACK and (receive true
Recognize)/NACK (not receiving information)；
Cell Cell returns to public number after the ACK or NACK of the user in receiving all SUG set to cell clump CC
Responded according to frame PDF；
The user's mobile messaging buffer pointer for returning to ACK is moved on to next frame message by cell clump CC, returns to NACK or super
When the pointer of user remain unchanged, continuous several times NACK or the user of time-out are deleted from SUG set；
Cell clump CC repeats data sending, until super base station SBS, which judges to perform, stops DPDC processes.
In addition, as shown in fig. 7, downlink common data channels have also been made following change on the interface protocol of LTE physical layers
More：
1) DPDC channel types are increased newly：The basic definition of channel and form are identical with PDSCH.
2) interface command eated dishes without rice or wine between following base station and user (UE) is increased newly：
(1)UE_START_DPDC_PROC：
Sending direction：Cell->UE；
Bearer Channel：PDSCH；
Field information 1：CC ID；
Field information 2：Cell ID；
Field information 3：UE ID；
Field information 4：The frequency spectrum distribution information of DPDC channels；
(2)UE_START_DPDC_PROC_ACK/UE_START_DPDC_PROC_NACK：
Sending direction：UE->Cell；
Bearer Channel：PUSCH；
Field information 1：CC ID；
Field information 2：Cell ID；
Field information 3：UE ID；
Field information 4：The frequency spectrum distribution information of DPDC channels；
Field information 5：ACK/NACK；
(3)UE_STOP_DPDC_PROC：
Sending direction：Cell->UE；
Bearer Channel：PDSCH；
Field information 1：CC ID；
Field information 2：Cell ID；
Field information 3：UE ID；
(4)UE_STOP_DPDC_PROC_ACK/UE_STOP_DPDC_PROC_NACK：
Sending direction：UE->Cell；
Bearer Channel：PUSCH；
Field information 1：CC ID；
Field information 2：Cell ID；
Field information 3：UE ID；
Field information 4：ACK/NACK；
(5)UE_PDF_SEND：
Sending direction：Cell->UE；
Bearer Channel：DPDC；
Field information 1：CC ID；
Field information 2：Compression algorithm type；
Field information 3：PDF frames, by【Cell ID, UE ID1：Compressed data section】Structural array is formed；
(6)UE_PDF_SEND_ACK/UE_PDF_SEND_NACK：
Sending direction：UE->Cell；
Bearer Channel：PUSCH；
Field information 1：CC ID；
Field information 2：UE ID；
Field information 3：ACK/NACK.
The step of various methods divide above, be intended merely to describe it is clear, can be merged into when realizing a step or
Some steps are split, are decomposed into multiple steps, as long as including identical logical relation, all protection domain in this patent
It is interior；To either adding inessential modification in algorithm in flow or introducing inessential design, but its algorithm is not changed
Core design with flow is all in the protection domain of the patent.
It is not difficult to find that the present embodiment is embodiment of the method corresponding to those in the first embodiment, the present embodiment can be with first in fact
Example is applied to work in coordination implementation.The relevant technical details mentioned in first embodiment are still effective in the present embodiment, in order to reduce
Repeat, which is not described herein again.Correspondingly, the relevant technical details mentioned in the present embodiment are also applicable in first embodiment.
Embodiment 3
Configuration and its data transmission method present embodiment discloses DPDC, it is suitable for UDN groups as shown in Figure 8
Net.
There are a super base station SBS-01 for UDN networkings.SBS-01 managed Cell-A001, Cell-A002 ...,
Cell-Axyz and Cell-B001, Cell-B002 ..., Cell-Bxyz cells, and Cell-A001, Cell-A002 ...,
Cell-Axyz constitutes CC-A；Cell-B001, Cell-B002 ..., Cell-Bxyz constitute CC-B.SBS-01 can be concentrated
The base band and radio frequency resource of all Cell and CC are managed, and these cells provide the downlink data money of all users of service
Source.UE-A001-01 provides service by Cell-A001, and other users also have corresponding cell to provide service.
Super base station SBS-01 completes the configuration of DPDC according to the method for embodiment 1：
1) the average data throughput of CC-A, CC-B in a traffic statistics cycle, edge throughput RE is calculated, and
Interference matrix ICC between CC, and predict total downlink data amount SD of next DPDC cycles CC-A and CC-B；
2) the CC set SCC of DPDC to be launched is emptied；
3) CC-A, CC-B for meeting thresholding that DPDC Algorithm of Dynamic Configuration defines are selected into SCC set；
4) CC-A and CC-B are issued and starts DPDC procedure commands；
3rd, CC-A and CC-B determines to participate in the user of DPDC scheduling, generation SUG set according to scheduling user group allocation algorithm：
1) UE newly accessed is added to SUG set, for example UE-A001-01 is put into the SUG set of CC-A；
2) SUG set is not sky, selects each UE successively from SUG set, does following judgement：If the UE has discharged
Data link, then delete the UE from SUG set；If UE meets to dispatch SINR and the data that user group allocation algorithm determines
Thresholding, then the user be retained in SUG set in, otherwise by the UE from SUG set in delete；
3) after travel through according to scheduling user group allocation algorithm and handled all users during SUG gathers, complete pair
The refreshing of SUG set, obtains following result：UE-A001-01, UE-A002-01, UE-Axyz-01 CC-A SUG set in,
UE-B001-01, UE-B002-01, UE-Bxyz-01 are in the SUG set of CC-B；
4) SBS-01 distributes the frequency of DPDC channels according to correlation matrix and the data business volume of prediction for CC-A and CC-B
The frequency spectrum resource of the DPDC channels of spectrum resource, CC-A and CC-B is orthogonal；
4th, CC-A and CC-B issues DPDC configuration orders to respective all cells respectively；
5th, UE of each cell in gathering included in SUG issue start DPDC configuration orders, such as Cell-A001 to
UE-A001-01 issues DPDC configuration orders, the frequency spectrum distribution information comprising DPDC channels in order；
6th, UE returns to ACK after receiving DPDC configuration orders；
7th, after each cell receives the startup configuration order response of all UE in SUG set, returned to cell clump CC
Start configuration order acknowledgement character response again；
8th, after each cell clump CC receives the startup configuration order acknowledgement character response of each cell of subordinate, to SBS reverting startings
Configuration order acknowledgement character response；
9th, each CC obtains next tune of each user from respective SUG set in the message buffer of all users
The data of cycle all transmissions are spent, encapsulation is compressed into common data frame PDF, PDF is issued each cell；
10th, each cell issues PDF by DPDC channels to corresponding user；
11st, the user in each cell in SUG set receives PDF frames, and decompression, obtains the data of this UE, returned to cell
Multiple ACK；
12nd, each cell responds after receiving the ACK of the UE in all SUG to cell clump CC reply PDF frame receptions；
13rd, after cell clump CC receives reception response, docking receives successful user's mobile messaging buffer pointer to next
Bar message, the pointer for replying NACK or the user of time-out remain unchanged, and the user that continuous several times NACK is obtained to time-out gathers from SUG
Middle deletion；
14th, repeat step 9~13, until SBS-01 stops DPDC processes；
15th, SBS-01 stops DPDC processes, issues the similar startup command procedure of the process of ceasing and desisting order.
In conclusion configuration and its data transmission method of a kind of downlink common data channels of the present invention, are suitable for
LTE/LTE-A standards, the 5G or more of new generation radio network techniques based on LTE standard evolution, it is based on by being construction, and with
The downlink common data channels DPDC of cell clump eliminates interference of the user on DPDC in CC, is reduced by data compression algorithm
Volume of transmitted data, improves the utilization rate and user throughput of radio open downlink physical resource, reduces small under UDN networkings
Disturb in section.So the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
- A kind of 1. collocation method of downlink common data channels (DPDC), applied to super-intensive networking, it is characterised in that under described The collocation method of row common data channels includes：Step S11, configuration of the downlink common data channels on the super base station of the super-intensive networking：The super base Stand and the cell clump of the downlink common data channels is used in the super-intensive networking according to interface-free resources allocation algorithm decision-making, be Each described cell clump distributes corresponding interface-free resources；And the cell clump of the downlink common data channels is used to each Issue the first startup configuration order；Step S12, configuration of the downlink common data channels on the cell clump：It is public using the downlink for each The cell clump of data channel altogether, it is true according to scheduling user group allocation algorithm after the first startup configuration order is received Surely the user of the downlink common data channels scheduling is participated in, the user for participating in the downlink common data channels scheduling is generated Dispatch user group (SUG) set；And gathered according to the SUG, included to subordinate in SUG set under all cells of user Hair second starts configuration order；Step S13, configuration of the downlink common data channels on the cell：The SUG is included for each subordinate The cell of user in set, after the second startup configuration order is received, the SUG collection is included in its subordinate User in conjunction issues the 3rd startup configuration order；Step S14, configuration of the downlink common data channels on user：Each user in gathering for the SUG, After the 3rd startup configuration order is received, the frequency spectrum distribution letter of its corresponding downlink common data channels is obtained Breath；Step S15, the configure-ack of the downlink common data channels：User in the SUG set is obtaining the frequency After spectrum distribution information, start configuration order according to the described 3rd and return to the 3rd confirmation message to the corresponding cell；It is described small Area starts configuration order to the corresponding cell clump return second according to the 3rd confirmation message and described second is received Confirmation message；The cell clump starts configuration order according to second confirmation message received and described first and surpasses to described Level base station returns to the first confirmation message；When the super base station receive it is all using described in the downlink common data channels After first confirmation message that cell burst goes out, the configuration of the downlink common data channels is completed.
- 2. the collocation method of downlink common data channels (DPDC) according to claim 1, it is characterised in that：The downlink The collocation method of common data channels further includes：Decision-making is carried out in the super base station according to configuration cycle timing according to judgment mechanism The no configuration for starting the downlink common data channels；Wherein, the configuration cycle is pre-set.
- 3. the collocation method of downlink common data channels (DPDC) according to claim 2, it is characterised in that：The judgement Mechanism is to be dependent on the relevant information of the cell clump of super base station subordinate described in the super-intensive networking：If the relevant information meets configured threshold, the configuration of the downlink common data channels is carried out；Otherwise, then the configuration of the downlink common data channels is stopped；Wherein, the configured threshold is pre-set；The relevant information includes each cell clump in the super base station Number of users, downlink traffic statistics, user's average throughput and QoS information.
- 4. the collocation method of downlink common data channels (DPDC) according to claim 2, it is characterised in that：The downlink The stopping configuration of common data channels specifically includes：The super base station issues the first stopping configuration life to each cell clump using the downlink common data channels Order；After each cell clump receives the first stopping configuration order, to all downlink common datas of its subordinate The cell on channel issues the second stopping configuration order；It is described to covering after cell on each downlink common data channels receives the second stopping configuration order User in SUG set issues the 3rd stopping configuration order；After user in each SUG set receives the 3rd stopping configuration order, the is returned to its corresponding described cell Three stop configure-ack information；The cell on each downlink common data channels receives the user in all SUG set of its subordinate The described 3rd stop configure-ack information after, return to second to its corresponding described cell clump and stop configure-ack information；Each cell clump using the downlink common data channels receives all public numbers of downlink of its subordinate It is believed that after described second of cell on road stops configure-ack information, return to first to the super base station and stop configure-ack Information；The super base station stops matching somebody with somebody in receive the cell clump of downlink common data channels described in all uses described first After putting confirmation message, frequency spectrum resource is discharged, stops the configuration of the downlink common data channels.
- 5. the collocation method of downlink common data channels (DPDC) according to claim 2, it is characterised in that：The step In S11, the interface-free resources allocation algorithm includes：Step S21, in the super-intensive networking, gathers all cells of the super base station subordinate and its traffic statistics number of user According to；Step S22, according to the traffic statistics data, the average data for calculating each cell clump in the current configuration cycle is handled up Rate RS and edge throughput RE；Step S23, according to the traffic statistics data, calculates the interference matrix between each cell clump in the current configuration cycle ICC；Step S24, predicts the downlink data demand of user in next configuration cycle, calculate each cell clump it is total under Row data volume SD；Step S25, the SCC set that the cell clump of downlink common data channels to be launched is formed are emptied, then will met as follows I-th of cell clump of one of condition includes the SCC set；Wherein, condition is：(ICC(i)>=TH_I) ＆＆ (SD (i)>= ) or (RE (i)) TH_SD<TH_RE)&&(SD(i)>=TH_SD)；TH_I, TH_SD, TH_RE and TH_SD are pre-set；Step S26, judges whether the SCC set is empty：If it is, stop the configuration of the downlink common data channels； If it is not, then the interference matrix information configuration interface-free resources according to the cell clump using the downlink common data channels.
- 6. the collocation method of downlink common data channels (DPDC) according to claim 1, it is characterised in that：The step In S12, the scheduling user group allocation algorithm includes：Step S31, determines whether the user newly accessed：If so, then jump to step S32；If it is not, jump to step Rapid S33；Step S32, the user newly accessed is added in the SUG set；Step S33, judges whether the SUG set is empty set：If empty set, then the downlink common data channels are recycled Interface-free resources, and jump to step S38；If not empty set, then step S34 is jumped to；Step S34, judges whether there is untreated user in the SUG set：If so, then jump to step S35；If not yet Have, then jump to step S38；Step S35, an optional user from SUG set；And judge whether the user of selection has discharged data link, if Data link is released, then jumps to step S37；If do not discharged, step S36 is jumped to；Step S36, judges whether the user of selection is eligible：If do not met, step S37 is jumped to；If met, Jump directly to step S34；Wherein, the condition is：(SINR<=TH_SINR) ＆＆ (D>=TH_D)；SINR represents user's Signal to Interference plus Noise Ratio；D represents the data volume of downlink transfer；TH_SINR and TH_D is pre-set；Step S37, the user of selection is deleted from SUG set, and jumps to step S33；Step S38, terminates.
- A kind of 7. data transmission method of downlink common data channels (DPDC), applied to super-intensive networking, it is characterised in that：Institute It is the configuration using the downlink common data channels as described in any one in claim 1~6 to state downlink common data channels Method is configured；And the downlink common data channels are built upon at least one cell clump, more of the super-intensive networking Between a cell and multiple users；The data transmission method of the downlink common data channels includes：Step S41, the cell clump obtained from message buffer its subordinate the SUG set in all users next A dispatching cycle data to be sent；Step S42, by all users, in next dispatching cycle, data compression to be sent is encapsulated as public number to the cell clump Sent according to frame, and by the downlink common data channels to each cell of the cell clump subordinate；Step S43, each cell by the downlink common data channels by the common data frame be forwarded to it includes The SUG set in multiple users in；Step S44, each user receive and decompress the common data frame to obtain its corresponding data；Then pass through The downlink common data channels return to the 3rd to the corresponding cell and receive confirmation message；Step S45, what each cell belonged to all users of its subordinate in SUG set is received the described 3rd connects After receiving confirmation message, the second reception confirmation letter is sent to its corresponding described cell burst by the downlink common data channels Breath；Step S46, after the cell clump receives the second reception confirmation message of each cell, the mobile message The pointer of buffering area, and jump to step S41 again and continue data transfer.
- 8. the data transmission method of downlink common data channels (DPDC) according to claim 7, it is characterised in that：It is described The data transmission method of downlink common data channels is only circulated within the configuration cycle after the completion of DPDC configurations and carried out；When to When next configuration cycle starts, the super base station of the super-intensive networking will come whether decision-making opens according to judgment mechanism Move the downlink common data channels：If started, the new downlink common data channels are reconfigured, and after configuration is complete, jump to step S41 Carried out data transmission using the new downlink common data channels；Otherwise, then stop configuring the downlink common data channels, and stop using the downlink common data channels into line number According to transmission.
- 9. the data transmission method of downlink common data channels (DPDC) according to claim 7, it is characterised in that：It is described In step S42, by all users, in next dispatching cycle, data compression to be sent is encapsulated as common data to the cell clump Frame includes：Increase User ID information header before the data to be sent of each user；Concatenation adds all data to be sent of User ID information header；According to the data after compression algorithm compression concatenation；Protocol fields are added before data after concatenation, and are packaged into the common data frame.
- 10. the data transmission method of downlink common data channels (DPDC) according to claim 9, it is characterised in that：Institute It is dynamic select according to data type, QoS demand and compression ratio to state compression algorithm.
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| US7587211B2 (en) * | 2005-12-21 | 2009-09-08 | Broadcom Corporation | Method and system for adaptive multi rate (AMR) and measurements downlink adaptation |
| US9084155B2 (en) * | 2012-06-13 | 2015-07-14 | All Purpose Networks LLC | Optimized broadband wireless network performance through base station application server |
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| CN101500246A (en) * | 2008-01-31 | 2009-08-05 | 大唐移动通信设备有限公司 | Data transceiving method and apparatus based on communication system provided with relay station |
| CN104205912A (en) * | 2012-03-19 | 2014-12-10 | 株式会社Ntt都科摩 | Communications system, base station device, and communications method |
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