CN106911364A - Method and apparatus for distributing remote antenna in cloud Radio Access Network - Google Patents
Method and apparatus for distributing remote antenna in cloud Radio Access Network Download PDFInfo
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- CN106911364A CN106911364A CN201510962958.3A CN201510962958A CN106911364A CN 106911364 A CN106911364 A CN 106911364A CN 201510962958 A CN201510962958 A CN 201510962958A CN 106911364 A CN106911364 A CN 106911364A
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- user equipment
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- subset
- antenna
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
- H04B7/0608—Antenna selection according to transmission parameters
- H04B7/061—Antenna selection according to transmission parameters using feedback from receiving side
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
Abstract
Embodiment of the disclosure discloses a kind of method and apparatus for distributing remote antenna in cloud Radio Access Network, and the method includes：The cell base station and multiple remote antennas user equipment being linked to respectively in cell；It is at least one of the multiple remote antenna of the user equipment allocation, as the first remote antenna subset based on the positional information of the user equipment provided by the cell base station；And the channel gain from each remote antenna in the first remote antenna subset based on user equipment feedback, it is the user equipment allocation the second remote antenna subset, to send data to the user equipment.
Description
Technical field
Embodiment of the disclosure is related to wireless communication field, and relates more particularly to a kind of use
In the method and apparatus that remote antenna is distributed in cloud Radio Access Network.
Background technology
Super-intensive network (UDN) is the important skill of the key capacity requirement for meeting 5G technologies
Art.The purpose of UDN is to improve the spectrum efficiency in sole user and region, to solve 5G systems
The problem of system intermediate frequency spectrum resource bottleneck.Cloud Radio Access Network (Cloud-RAN) realize by
The Base-Band Processing of multiple base stations focuses on Cloud Server, such as Base Band Unit (BBU) pond.Will
The remote antenna of such as far end radio frequency head (RRH) is close by the high-speed link from BBU
It is deployed in whole network collection.Herein, will there is centralized Base-Band Processing function
UDN is referred to as the UDN based on Cloud-RAN.
In the UDN based on Cloud-RAN, sixty-four dollar question is how to reduce dry
Disturb.Preferable scheme is to centralized processing node report institute by each remote antenna by optical fiber
There is the information of channel so that all antennas can implement the transmission of collaborative to reduce interference.To the greatest extent
This theory is managed for the UDN networks of height cooperation there is provided a solution, but due to
The presence of a large amount of antennas and user equipment so that substantial amounts of real time signal processing and calculating are multiple
Miscellaneous degree will become to be difficult to bear.
At the same time, because substantial amounts of remote antenna is dispersed in whole region, therefore exist
Possibly remote from the situation of all user equipmenies, this causes that these set away from user to many remote antennas
Lifting of the standby remote antenna to systematic function helps extremely limited, but will increased system letter
Number expense and computation complexity.
Currently, for the neck of the remote antenna selection in the UDN based on Cloud-RAN
First solution is the greedy Antenna Selection Algorithem based on channel gain (or minimum range), should
Specific algorithm is disclosed in " Energy-Efficient, Large-Scale Distributed-Antenna
System(L-DAS)for Multiple Users."IEEE Journal of Selected Topics in
Signal Processing 8 (5), 2014, pp954-965) " in.
This algorithm is the greedy algorithm (greedy of a kind of iteration and centralization
Algorithm), its be based on minimum Signal to Interference plus Noise Ratio (SINR) threshold value in a cluster and
Channel gain (or distance) between RRH and user equipment.The algorithm can be by optimization
Parameter setting reduces the quantity of the mobile radio near user equipment, and its with cooperate completely
Situation compare and only resulted in performance loss less than 10%.Although its complexity and performance have
It is competitive, but still in the presence of arrange obvious limitation：
- the algorithm is the algorithm that centralization is realized, it will need big when number of users increases
The expense of amount；
- iterative algorithm is faced with the problem of convergence rate and computation complexity always.
Not on the theoretical proof of the convergence of algorithm speed.In some cases, changing every time
After instead of, the average value of cell and the handling capacity of cell boarder not always increase；
- the algorithm needs three parameters, including：SINR desired values, one of user equipment
The exit criteria of minimum SINR threshold values and iterative algorithm in individual cluster.If can not select
Suitable parameter is selected, performance will become worse.Generally, minimum SINR is bigger, and performance will
Better；
- in order to realize better performance, the algorithm will select bigger minimum SINR threshold values.
At the same time, more users will be serviced under a RRH cluster.Therefore, a user
Channel estimation errors will cause that more user performances are damaged, it means that this algorithm lacks
Robustness.
The content of the invention
In order to provide solution comprehensively for the day line options in the UDN based on Cloud-RAN
Certainly scheme, the present disclosure proposes a kind of for distributing remote antenna in cloud Radio Access Network
Method and apparatus.The method connects (dual connectivity) net based on double-strand as shown in Figure 1
Network.All users link with both cell and distributed remote antenna respectively.Cell is provided and is directed to
The signal covering of all user equipmenies and control channel, and distributed remote antenna is supplied to institute
There is the data transfer of user's high speed.
An aspect of this disclosure is related to a kind of for distributing distal end in cloud Radio Access Network
The method of antenna, the method includes：User equipment is linked to the cell base station in cell respectively
And multiple remote antennas；Position based on the user equipment provided by the cell base station
Information, is at least one of the multiple remote antenna of the user equipment allocation, used as
One remote antenna subset；And based on user equipment feedback from first distal end day
The channel gain of each remote antenna in line subset, is the distal end of the user equipment allocation second
Antenna subset, to send data to the user equipment.
Due to first under the control of cell base station, based on the geographical position residing for user equipment itself
The alternative cooperation set that have found the first remote antenna subset as remote antenna is put, therefore will only
Select to provide the antenna for servicing for user equipment in the subset, it is to be serviced so as to effectively reduce
The number of the antenna of the user equipment.
In accordance with an embodiment of the present disclosure, methods described also includes：It is each user equipment allocation pair
The the second remote antenna subset answered；And the second remote antenna based on multiple user equipmenies
Collection, the remote antenna subset that selection is shared by the multiple user equipment.
It may be noted that due to this method, independently to be each user equipment allocation in region corresponding
Second remote antenna subset, therefore each user equipment need not be with other users equipment during this period
Exchange channel information.Number of antennas in usual second remote antenna subset is less than the first distal end day
Number of antennas in line subset, This further reduces the antenna amount of user equipment to be serviced.
In accordance with an embodiment of the present disclosure, methods described also includes：Via the multiple user equipment
All remote antennas in shared remote antenna subset, data are sent to each user equipment.
In accordance with an embodiment of the present disclosure, user equipment is linked to the cell base station in cell respectively
And multiple remote antennas also include：After the link is set up, described in the cell
Control channel is set up between base station and the user equipment.
In accordance with an embodiment of the present disclosure, based on the remote from described first of user equipment feedback
The channel gain of each remote antenna in the antenna subset of end, is the user equipment allocation second
Remote antenna subset, includes to send data to the user equipment：Set for the user
The standby channel gain for calculating each remote antenna in the first remote antenna subset；For
The user equipment, according in the first remote antenna subset all remote antenna channel gains it is total
The overall channel gains predetermined with setting；According to order from big to small, each remote antenna is arranged
Channel gain；Being added up according to order from big to small, the channel gain that obtains is more than or equal to
During the predetermined overall channel gains, the distal end day corresponding with the channel gain being cumulatively added is selected
Line；And be remote in the second remote antenna subset by the quantity set of these remote antennas
Hold the quantity of antenna.
This is caused on the premise of channel gain (or not to performance cause quantitative loss) is met,
The user equipment can be serviced using minimal amount of antenna amount.
In accordance with an embodiment of the present disclosure, the second remote antenna subset based on multiple user equipmenies,
The remote antenna subset that selection is shared by the multiple user equipment includes：Will be comprising shared identical
Multiple second remote antenna subsets of remote antenna merge into an antenna subset, with by described many
Individual user equipment is shared.
In accordance with an embodiment of the present disclosure, methods described also includes：It is more than in the quantity of user equipment
During antenna amount in the shared remote antenna subset, to shared remote antenna
The extra remote antenna of collection addition, so that the remote antenna in the shared remote antenna subset
Quantity of the quantity at least equal to the user equipment.
Another aspect of the present disclosure is related to a kind of for distributing distal end in cloud Radio Access Network
The equipment of antenna, including：Double-strand connects sets up device, small for user equipment to be linked to respectively
Cell base station and multiple remote antennas in area；First remote antenna distributor, for base
It is the user equipment in the positional information of the user equipment provided by the cell base station
At least one of the multiple remote antenna is distributed, as the first remote antenna subset；And
Second remote antenna distributor, for being fed back based on the user equipment from described first
The channel gain of each remote antenna in remote antenna subset, is the user equipment allocation
Two remote antenna subsets, to send data to the user equipment.
In accordance with an embodiment of the present disclosure, the equipment also includes：3rd remote antenna distributor,
For being the corresponding second remote antenna subset of each user equipment allocation；And used based on multiple
Second remote antenna subset of family equipment, the distal end day that selection is shared by the multiple user equipment
Line subset.
In accordance with an embodiment of the present disclosure, the equipment also includes：Data sending device, for passing through
All remote antennas in the remote antenna subset shared by the multiple user equipment, to each
User equipment sends data.
In accordance with an embodiment of the present disclosure, the equipment also includes：Control channel sets up device, uses
After being set up in the link, between the base station of the cell and the user equipment
Set up control channel.
In accordance with an embodiment of the present disclosure, the second remote antenna distributor includes：Channel increases
Beneficial computing unit, for being calculated in the first remote antenna subset for the user equipment
Each remote antenna channel gain；Overall channel gains determining unit, for for the use
Family equipment, the summation according to all remote antenna channel gains in the first remote antenna subset is set
Predetermined overall channel gains；Channel gain sequencing unit, for according to order from big to small,
Arrange the channel gain of each remote antenna；Second remote antenna select unit, for according to
Order from big to small adds up the channel gain for obtaining more than or equal to the predetermined total channel
During gain, the remote antenna corresponding with the channel gain being cumulatively added is selected；And these are remote
The quantity set for holding antenna is the quantity of the remote antenna in the second remote antenna subset.
In accordance with an embodiment of the present disclosure, the 3rd remote antenna distributor includes：Merge single
Unit, for one will to be merged into comprising the multiple second remote antenna subsets for sharing identical remote antenna
Individual antenna subset, shares with by the multiple user equipment.
In accordance with an embodiment of the present disclosure, the equipment also includes：Adding device, in user
When the quantity of equipment is more than the antenna amount in the shared remote antenna subset, to described common
The remote antenna subset enjoyed adds extra remote antenna, so that shared remote antenna
Quantity of the quantity of the remote antenna of concentration at least equal to the user equipment.
Therefore, distributed in cloud Radio Access Network using the various embodiments according to the disclosure
The method and apparatus of remote antenna provides a kind of antenna selecting party based on prevailing channel gain
Method (GDAS), it can efficiently solve the day line selection in the UDN based on Cloud-RAN
The preferentially problem of change, Precoding Design, Power Control.
Brief description of the drawings
Fig. 1 schematically shows the UDN based on cloud Radio Access Network that double-strand connects；
Fig. 2 is shown according to the embodiment of the present disclosure for distributing distal end in cloud Radio Access Network
The flow chart of the method for antenna；
Fig. 3 is shown according to the embodiment of the present disclosure for distributing distal end in cloud Radio Access Network
The method of antenna implement mechanism and signal transmission design；
Fig. 4 is shown according to the embodiment of the present disclosure for distributing distal end in cloud Radio Access Network
The block diagram of the equipment of antenna.
Specific embodiment
Fig. 1 schematically shows the UDN based on cloud Radio Access Network that double-strand connects.
As shown in figure 1, double-strand connect refer to user equipment respectively with cell in cell base station and
Both multiple remote antennas are linked, wherein RRH represent remote antenna (or far end radio frequency head),
BBU represents the center treatment node with stronger computing capability, and each RRH and BBU
Between be attached by high speed fibre.
Fig. 2 is shown according to the embodiment of the present disclosure for distributing distal end in cloud Radio Access Network
The flow chart 200 of the method for antenna.Fig. 3 show according to the embodiment of the present disclosure for cloud without
In line access network distribute remote antenna method implement mechanism and signal transmission sets
Meter.
In conjunction with Fig. 2 and Fig. 3 and Fig. 1 is referred to, to be carried out in detail to the method described in the disclosure
Explanation.
As shown in Fig. 2 method 200 includes step S210 to S230：
In step S210, cell base station user equipment being linked to respectively in cell and many
Individual remote antenna.In accordance with an embodiment of the present disclosure, step S210 also includes：In the link
After foundation, control letter is set up between the base station of the cell and the user equipment
Road.A specific example according to the disclosure, user equipment is connected to cell base station to receive letter
Number and control information.
Next, in step S220, being set based on the user provided by the cell base station
Standby positional information, is at least in the multiple remote antenna of the user equipment allocation
It is individual, as the first remote antenna subset；
In accordance with an embodiment of the present disclosure, each user equipment utilize from cell base station to its from
The metrical information of body position finds a set for distributed remote antenna.These distributed distal ends
Antenna constitutes the first remote antenna subset mentioned above, and cooperation distal end alternately
Antenna set.
Next, in step S230, based on user equipment feedback from described first
The channel gain of each remote antenna in remote antenna subset, is the user equipment allocation
Two remote antenna subsets, to send data to the user equipment.
In accordance with an embodiment of the present disclosure, step S230 can also specifically include following many height
Step：
First, for the user equipment, each in the first remote antenna subset is calculated
The channel gain of remote antenna.A specific example according to the disclosure, cell is by being each
The corresponding alternative cooperation remote antenna set distribution channel status of user equipment is indicated with reference to letter
Number (CSI-RS) includes channel status instruction (CSI) measurement result of channel gain to obtain.
Next, the user equipment is directed to, according to all distal ends in the first remote antenna subset
The summation of antenna channel gain, sets predetermined overall channel gains.A tool according to the disclosure
Body example, is increased using all remote antenna channels in Study first β and the first remote antenna subset
The summation of benefit sets predetermined overall channel gains.A specific example according to the disclosure,
Parameter beta is defined as the ratio less than 1 more than 0, and β value is bigger, then it represents that more multiplex
Family may be collectively forming a fairly large set.A specific example according to the disclosure,
Parameter beta and the overall channel gains subscribed are associated by equation (1)：
Wherein, ATRepresent predetermined overall channel gains, AiRepresent that each is remote in the first remote antenna subset
The channel gain of antenna is held,Represent all remote antenna letters in the first remote antenna subset
The summation of road gain, wherein subscript i refer to i-th remote antenna.
Next, according to order from big to small, arranging the channel gain of each remote antenna；
If for example, A1≥A2≥…≥AK, then it represents that the 1st channel gain of remote antenna more than etc.
It is more than or equal in the channel gain of the 2nd channel gain of remote antenna, the 2nd remote antenna
3rd channel gain of remote antenna, and so on.
Next, starting cumulative channel gain according to order from big to small.According to from greatly to
Small order add up the channel gain that obtains be more than or equal to it is described (in other words, once exceeding)
During predetermined overall channel gains, stop cumulative and select corresponding with the channel gain being cumulatively added
One or more remote antennas；And by the quantity set of these remote antennas be described second remote
The quantity of the remote antenna in the antenna subset of end.
In other words, user equipment and all antennas that need not select in the first remote antenna subset
As providing for it antenna of service, but need to only select those can to provide leading channel gain
Antenna, these antennas that can provide leading channel gain constitute above-mentioned second distal end
Antenna subset.
For example, if it find that according to the tactic preceding L from big to small of channel gain
Individual antenna has been met such as lower inequality (2) condition：
A1+A2+…+AL≥AT, wherein 1≤L ＜ K (2),
Then need to only select to provide the L antenna for dominating channel gain.
In the above described manner, the above-mentioned steps of Application way 200 are come for each user equipment
(i=1,2 ..., K) distributes corresponding second remote antenna subset.A tool according to the disclosure
Body example, each user equipment is based respectively on corresponding β value and independently find has master to it
The antenna serves antenna of channel gain is led as service antenna, and without carrying out letter with other antennas
Road information is exchanged.And each user equipment to centralized processing node report its corresponding second
Remote antenna subset.This allows that the step is implemented in a distributed manner.
Next, the second remote antenna subset based on multiple user equipmenies, further selection by
The shared remote antenna subset of the multiple user equipment.
In accordance with an embodiment of the present disclosure, the distal end for further selecting the multiple user equipment shared
Antenna subset needs to follow following rule：
(1) user equipment that will be assigned identical remote antenna merges into a user equipment
Subset；
(2) will be merged into comprising the multiple second remote antenna subsets for sharing identical remote antenna
One antenna subset, shares with by the multiple user equipment；And
(3) antenna in the quantity of user equipment is more than the shared remote antenna subset
During quantity, extra remote antenna is added to the shared remote antenna subset, so that described
The quantity of the remote antenna in shared remote antenna subset is at least equal to the user equipment
Quantity.
After the completion of above method step, in accordance with an embodiment of the present disclosure, method 200 enters one
Step includes：Via all distal ends day in the remote antenna subset that the multiple user equipment is shared
Line, data are sent to each user equipment.Specifically, centralized processing node notifies distal end
Antenna assignment result simultaneously updates shared remote antenna subset.Then cell will be for each renewal
Rear shared remote antenna subset distributes CSI report reference signal.Then user equipment is only
CSI is reported in shared remote antenna subset in the updated.Shared distal end day after renewal
Line subset finally calculates transmitted waveform and power, for eliminating shared remote antenna subset in
Interference.So far, remote antenna can start to send data to each user equipment.
Another aspect of the present disclosure is related to a kind of for distributing distal end in cloud Radio Access Network
The equipment 400 of antenna, the equipment 400 includes：Double-strand connects sets up device 410, for that will use
Family equipment is linked to cell base station and multiple remote antennas in cell respectively；First distal end day
Line distributor 420, for the position based on the user equipment provided by the cell base station
Confidence ceases, and is at least one of the multiple remote antenna of the user equipment allocation, as
First remote antenna subset；And the second remote antenna distributor 430, for based on described
The letter from each remote antenna in the first remote antenna subset of user equipment feedback
Road gain, is the user equipment allocation the second remote antenna subset, to be set to the user
Preparation send data.
In accordance with an embodiment of the present disclosure, the equipment also includes：3rd remote antenna distributor,
For being the corresponding second remote antenna subset of each user equipment allocation；And used based on multiple
Second remote antenna subset of family equipment, the distal end day that selection is shared by the multiple user equipment
Line subset.
In accordance with an embodiment of the present disclosure, the equipment also includes：Data sending device, for passing through
All remote antennas in the remote antenna subset shared by the multiple user equipment, to each
User equipment sends data.
In accordance with an embodiment of the present disclosure, the equipment also includes：Control channel sets up device, uses
After being set up in the link, between the base station of the cell and the user equipment
Set up control channel.
In accordance with an embodiment of the present disclosure, the second remote antenna distributor includes：Channel increases
Beneficial computing unit, for being calculated in the first remote antenna subset for the user equipment
Each remote antenna channel gain；Overall channel gains determining unit, for for the use
Family equipment, the summation according to all remote antenna channel gains in the first remote antenna subset is set
Predetermined overall channel gains；Channel gain sequencing unit, for according to order from big to small,
Arrange the channel gain of each remote antenna；Second remote antenna select unit, for according to
Order from big to small adds up the channel gain for obtaining more than or equal to the predetermined total channel
During gain, the remote antenna corresponding with the channel gain being cumulatively added is selected；And these are remote
The quantity set for holding antenna is the quantity of the remote antenna in the second remote antenna subset.
In accordance with an embodiment of the present disclosure, the 3rd remote antenna distributor includes：Merge single
Unit, for one will to be merged into comprising the multiple second remote antenna subsets for sharing identical remote antenna
Individual antenna subset, shares with by the multiple user equipment.
In accordance with an embodiment of the present disclosure, the equipment also includes：Adding device, in user
When the quantity of equipment is more than the antenna amount in the shared remote antenna subset, to described common
The remote antenna subset enjoyed adds extra remote antenna, so that shared remote antenna
Quantity of the quantity of the remote antenna of concentration at least equal to the user equipment.
In order to check the performance of the method described in the disclosure, Computer Simulation is performed.It is specific imitative
True parameter is listed in table 1：
Table 1：Simulation parameter
In the case of different beta, the Mean Speed of each section and 5% edge customer are fast
Rate shows in table 2：
Table 2：According to the systematic function of method of disclosure
| Per section Mean Speed (bps/Hz) | 5% edge customer speed (bps/Hz) | Antenna utilization rate | |
| β=1.0 | 74.9439 (100.00%) | 3.7383 (100.00%) | 100.00% |
| β=0.9 | 67.1297 (89.57%) | 3.5041 (93.74%) | 35.41% |
| β=0.8 | 61.1254 (81.56%) | 3.3101 (88.55%) | 23.30% |
| β=0.7 | 58.2782 (77.76%) | 3.3832 (90.50%) | 17.52% |
| β=0.6 | 56.7100 (75.67%) | 3.1374 (83.93%) | 14.02% |
| β=0.5 | 55.7081 (74.33%) | 2.9933 (80.07%) | 11.61% |
| β=0.4 | 55.0356 (73.44%) | 2.7900 (74.63%) | 9.86% |
| β=0.3 | 54.6782 (72.96%) | 2.6498 (70.88%) | 8.63% |
| β=0.2 | 54.6045 (72.86%) | 2.4762 (66.24%) | 7.95% |
| β=0.1 | 54.6141 (72.87%) | 2.4051 (64.34%) | 7.81% |
In view of the performance loss in table 2 and antenna utilization rate, the parameter selection of recommendation is
β=0.9.And then, it has been given in Table 3 etc. in transimission power zero forcing algorithm (ETP-ZF)
Computation complexity.
Table 3：According to the systematic function and computation complexity of method of disclosure
Be can be seen that in the typical case from the simulation result in table 2 and 3, the method
Performance shows efficient gain, for example, the utilization rate of antenna is reduced to 35% by the method
And calculate cost and be reduced to 14%, and only resulted in compared with the remote antenna for cooperating completely
About 10% performance loss.
In sum, the various embodiments of the disclosure provide a kind of being used in cloud Radio Access Network
The method and apparatus of middle distribution remote antenna, disclosed method is a kind of based on channel gain
Algorithm, it solves the excellent of day line options in the super-intensive network based on cloud Radio Access Network
Change, Precoding Design, the problem of Power Control.
The alternative embodiment of the disclosure is the foregoing is only, the disclosure is not limited to, for
For those skilled in the art, the disclosure can have various modifications and variations.It is all in the disclosure
Spirit and principle within, any modification, equivalence replacement, improvement for being made etc. all should be included
Within the protection domain of the disclosure.
Claims (14)
1. it is a kind of in cloud Radio Access Network distribute remote antenna method, including：
The cell base station and multiple remote antennas user equipment being linked to respectively in cell；
It is the use based on the positional information of the user equipment provided by the cell base station
Family equipment distributes at least one of the multiple remote antenna, used as the first remote antenna
Collection；And
Based on user equipment feedback from each in the first remote antenna subset
The channel gain of remote antenna, is the user equipment allocation the second remote antenna subset, is used to
Data are sent to the user equipment.
2. method according to claim 1, also includes：
It is the corresponding second remote antenna subset of each user equipment allocation；And
The second remote antenna subset based on multiple user equipmenies, selection is set by the multiple user
Standby shared remote antenna subset.
3. method according to claim 2, also includes：
Via all remote antennas in the remote antenna subset that the multiple user equipment is shared,
Data are sent to each user equipment.
4. method according to claim 1, wherein user equipment is linked into cell respectively
In cell base station and multiple remote antenna also include：
It is described link set up after, the base station of the cell and the user equipment it
Between set up control channel.
5. method according to claim 1, wherein based on user equipment feedback come
The channel gain of each remote antenna from the first remote antenna subset, is the user
Equipment distributes the second remote antenna subset, includes to send data to the user equipment：
Each distal end in the first remote antenna subset is calculated for the user equipment
The channel gain of antenna；
For the user equipment, according to all remote antenna channels in the first remote antenna subset
The summation of gain sets predetermined overall channel gains；
According to order from big to small, the channel gain of each remote antenna is arranged；
In the channel gain for obtaining that added up according to order from big to small more than or equal to described pre-
During fixed overall channel gains, the remote antenna corresponding with the channel gain being cumulatively added is selected；With
And
It is the distal end in the second remote antenna subset by the quantity set of these remote antennas
The quantity of antenna.
6. method according to claim 2, wherein based on multiple user equipmenies second is remote
End antenna subset, the remote antenna subset that selection is shared by the multiple user equipment includes：
One will be merged into comprising the multiple second remote antenna subsets for sharing identical remote antenna
Antenna subset, shares with by the multiple user equipment.
7. method according to claim 6, also includes：
Antenna amount in the quantity of user equipment is more than the shared remote antenna subset
When, extra remote antenna is added to the shared remote antenna subset, so that described shared
Remote antenna subset in remote antenna quantity of the quantity at least equal to the user equipment.
8. it is a kind of in cloud Radio Access Network distribute remote antenna equipment, including：
Double-strand connects sets up device, for the cell base station being linked to user equipment respectively in cell
And multiple remote antennas；
First remote antenna distributor, for based on the use provided by the cell base station
The positional information of family equipment, be in the multiple remote antenna of the user equipment allocation at least
One, as the first remote antenna subset；And
Second remote antenna distributor, for being fed back based on the user equipment from described
The channel gain of each remote antenna in the first remote antenna subset, is the user equipment point
With the second remote antenna subset, to send data to the user equipment.
9. equipment according to claim 8, also includes：
3rd remote antenna distributor, for for each user equipment allocation it is corresponding second remote
End antenna subset；And the second remote antenna subset based on multiple user equipmenies, select by institute
State the shared remote antenna subset of multiple user equipmenies.
10. equipment according to claim 9, also includes：
Data sending device, for the remote antenna subset shared via the multiple user equipment
In all remote antennas, to each user equipment send data.
11. equipment according to claim 8, also include：
Control channel sets up device, after being set up in the link, in the institute of the cell
State and set up control channel between base station and the user equipment.
12. equipment according to claim 8, wherein second remote antenna distribution dress
Put including：
Channel gain computing unit, for being calculated in first distal end for the user equipment
The channel gain of each remote antenna in antenna subset；
Overall channel gains determining unit, for for the user equipment, according to the first distal end day
The summation of all remote antenna channel gains sets predetermined overall channel gains in line subset；
Channel gain sequencing unit, for according to order from big to small, arranging each distal end day
The channel gain of line；
Second remote antenna select unit, for adding up what is obtained according to order from big to small
When channel gain is more than or equal to the predetermined overall channel gains, the channel for selecting and being cumulatively added
The corresponding remote antenna of gain；And by the quantity set of these remote antennas be described second
The quantity of the remote antenna in remote antenna subset.
13. equipment according to claim 9, wherein the 3rd remote antenna distribution dress
Put including：
Combining unit, for by comprising multiple second remote antennas for sharing identical remote antenna
Collection merges into an antenna subset, is shared with by the multiple user equipment.
14. equipment according to claim 13, also include：
Adding device, the shared remote antenna subset is more than for the quantity in user equipment
In antenna amount when, add extra remote antenna to the shared remote antenna subset,
So that the quantity of the remote antenna in the shared remote antenna subset is at least equal to the use
The quantity of family equipment.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101784119A (en) * | 2010-02-05 | 2010-07-21 | 北京邮电大学 | Distribution method of OFDMA (Orthogonal Frequency Division Multiple Access) distributed antenna network resources |
| JP5067630B2 (en) * | 2008-08-28 | 2012-11-07 | 日本電気株式会社 | Mobile communication terminal and antenna selection method |
| CN103973344A (en) * | 2014-04-29 | 2014-08-06 | 东南大学 | Base station antenna selection method for D2D communication |
| CN104838600A (en) * | 2012-12-21 | 2015-08-12 | 华为技术有限公司 | Method and apparatus for providing generic hierarchical precoding codebooks |
-
2015
- 2015-12-18 CN CN201510962958.3A patent/CN106911364B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5067630B2 (en) * | 2008-08-28 | 2012-11-07 | 日本電気株式会社 | Mobile communication terminal and antenna selection method |
| CN101784119A (en) * | 2010-02-05 | 2010-07-21 | 北京邮电大学 | Distribution method of OFDMA (Orthogonal Frequency Division Multiple Access) distributed antenna network resources |
| CN104838600A (en) * | 2012-12-21 | 2015-08-12 | 华为技术有限公司 | Method and apparatus for providing generic hierarchical precoding codebooks |
| CN103973344A (en) * | 2014-04-29 | 2014-08-06 | 东南大学 | Base station antenna selection method for D2D communication |
Non-Patent Citations (1)
| Title |
|---|
| 徐湛等: "基于Cloud - ＲAN的协作式无线接入网架构", 《电子测量与仪器学报》 * |
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