CN110392430A - A kind of Un interface resource distribution method - Google Patents
A kind of Un interface resource distribution method Download PDFInfo
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- CN110392430A CN110392430A CN201810349673.6A CN201810349673A CN110392430A CN 110392430 A CN110392430 A CN 110392430A CN 201810349673 A CN201810349673 A CN 201810349673A CN 110392430 A CN110392430 A CN 110392430A
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- frame configuration
- configuration mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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Abstract
This application provides a kind of Un interface resource distribution methods, it is corresponded in equipment applied to the cell for hanging RN under the support in multilevel relay networking, this method comprises: when receiving the service request of the first RN transmission, it is that the first RN distributes RN sub-frame configuration mode according to the first RN service request sent and interference measurement information；Wherein, it is less than the 2nd RN of preset threshold with the channel relevancy of the first RN if it exists, then the RN sub-frame configuration mode of the 2nd RN is distributed in the first RN and the 2nd RN space division multiplexing；And the first RN of RN sub-frame configuration pattern notification of the first RN will be distributed to by dedicated signaling.This method can save RN sub-frame configuration mode, improve Un interface resource utilization rate.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of Un interface resource distribution method.
Background technique
To extend over, 3GPP agreement is in E-UTRAN (Evolved Universal Terrestrial Radio
Access Network, the universal land radio access web of evolution) relaying technique is used in system, define RN (Relay
Node, relay node) and DeNB (Doner eNB, alms giver eNB).
Referring to Fig. 1, Fig. 1 is with interior relay networking schematic diagram.MME in Fig. 1 (Mobility Management Entity,
Mobile management entity) and S-GW (Serving Gateway, gateway) be EPC (Evolved Packet Core, evolution
Packet-based core networks) in network element.
As shown in Figure 1, the cell of RN access DeNB, the information exchange between RN and DeNB are carried out by Un interface.Un connects
Mouth is a wireless interface.DeNB is acted on behalf of as the S1/X2 of RN, by two logic interfacing S1 and X2 on Un interface in RN and
S1 information and X2 information are forwarded between related network elements: one side DeNB passes through logic interfacing S1/X2 for the S1/X2 information from RN
It is transmitted to other eNB of EPC/, another aspect DeNB is believed EPC/ other eNB S1/X2 for being sent to RN by logic interfacing S1/X2
Breath is transmitted to RN.
UE in RN cell accesses RN cell by Uu interface.RN is from the uplink information of Uu interface UE, by the information
It is transferred to DeNB by the logic interfacing S1 on Un interface, DeNB transmits information to EPC.EPC sends the downlink information of UE
To DeNB, which is transferred to RN by the logic interfacing S1 on Un interface by DeNB, and information is transferred to by RN by Uu interface
UE。
The RN of 3GPP protocol definition be with interior RN, can not be on backhaul link (link claims backhaul link between RN and DeNB)
Reception/sending while transmission information in Uu interface/receives information.Therefore, 3GPP agreement defines RN on backhaul link
Frame configuration: in the UL/DL subframe specified in RN sub-frame configuration, RN sent in backhaul link/receive information.In RN cell, RN
The DL subframe used on backhaul link is configured to MBSFN sub-frame, the UE in RN cell is made not execute measurement in these subframes.RN
In the sub-frame of uplink or downlink subframe needs that uplink information of the Uu interface from UE or while sending downlink information to UE use
Sub-frame of uplink or downlink subframe used in when avoiding communicating between RN and DeNB on backhaul link.
Due to 3GPP agreement support above-mentioned band in relaying it is limited to the extension of covering, for it is larger range of extend over
It spreads over, multistage (jump) comes into being with interior relaying, multistage (jump) with outer relaying or multistage (jump) mixing relaying.
It is cascaded by level Four RN with for interconnection, referring to fig. 2, Fig. 2 is multistage (jump) relay networking schematic diagram.In Fig. 2, first
Grade RN is connected by Un interface with DeNB, and subsequent every grade of RN is connected by Un interface with previous stage RN.In every grade of RN coverage area
UE this grade of RN is accessed by Uu interface.This grade of RN passes through uplink information (uplink business data and the uplink of Uu interface UE
Control information), and the information is uploaded to by upper level RN or DeNB by Un interface.
Meanwhile this grade of RN passes through the downlink information (downlink business of the UE of the Un interface from upper level RN or DeNB
Data and Downlink Control Information), and UE is sent that information to by Uu interface.Un interface between every grade of RN and upper level RN
Function it is identical with the function of Un interface between the first order RN and DeNB: equally exist two logics on the Un interface and connect
Mouth S1 and X2, S1/X2 function of the upper level RN in interface proxy the same level RN.
But in multilevel relay, since available RN sub-frame configuration mode is limited, how in RN access upper one
Distributing Un interface resource to RN when grade RN or DeNB is urgent problem.
Summary of the invention
In view of this, the application provides a kind of Un interface resource distribution method, RN sub-frame configuration mode can be saved, is improved
Un interface resource utilization rate.
In order to solve the above technical problems, the technical solution of the application is achieved in that
A kind of Un interface resource distribution method corresponds to equipment applied to the cell for hanging RN under the support in multilevel relay networking
On, which is characterized in that this method comprises:
When receiving the service request of the first RN transmission, believed according to the first RN service request sent and interference measurement
Breath is that the first RN distributes RN sub-frame configuration mode；Wherein, it is less than the of preset threshold with the channel relevancy of the first RN if it exists
Two RN, then the RN sub-frame configuration mode of the 2nd RN is distributed in the first RN and the 2nd RN space division multiplexing；
And the first RN of RN sub-frame configuration pattern notification of the first RN will be distributed to by dedicated signaling.
As can be seen from the above technical solution, in the application by receive RN uplink signal, estimate the wireless channel of RN with
And the channel relevancy between difference RN can between the two RN when channel is uncorrelated or when correlation is very weak between two RN
With space division multiplexing RN sub-frame configuration mode, RN sub-frame configuration mode can be saved, improves Un interface resource utilization rate.
Detailed description of the invention
Fig. 1 is with interior relay networking schematic diagram；
Fig. 2 is multistage (jump) relay networking schematic diagram；
Fig. 3 is the radio resource allocation flow diagram of Un interface in the embodiment of the present application.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and examples,
Technical solution of the present invention is described in detail.
A kind of Un interface resource distribution method is provided in the embodiment of the present application, applied under the support in multilevel relay networking
The cell for hanging RN corresponds in equipment, by receiving the uplink signal of RN, estimates the letter between the wireless channel and difference RN of RN
Road correlation can be with space division multiplexing RN subframe between the two RN when channel is uncorrelated or when correlation is very weak between two RN
Configuration mode can save RN sub-frame configuration mode, improve Un interface resource utilization rate.
Support the lower cell for hanging RN that can pass through the relevant information of system message broadcast relay in multilevel relay networking.
The cell around RN search in multilevel relay networking determines that sending the cell for relaying relevant information is under supporting
The cell for hanging RN, not sending and relaying the cell of relevant information is not support the lower cell for hanging RN.
Wherein, support that the lower cell for hanging RN is DeNB (alms giver eNB) or DeRN (alms giver RN) cell；The corresponding equipment of cell
Referred to as DeNB and DeRN.
One kind or any number of combination that relevant information includes following information are relayed, and is not limited to following information: cell
The RN sub-frame configuration mode that grade (jumps) is several, available uplink and downlink relay speed grade, used.
RN hangs one cell of selection in the cell of RN and initiates random access under supporting around.
Wireless heterogeneous networks (RRC) connection is sent in the random access procedure and establishes request message, and is built in the RRC connection
The request of RN sub-frame configuration is carried in vertical request message.
The lower cell for hanging RN is supported to receive RRC connection and establish after request message, according to RN carried in the message
When frame configuring request determines that access object is not common UE but RN, the service request based on subsequent RN is to RN distribution Un interface
Radio resource.
In the cell for hanging RN under support, the correlation procedure of DeRN and DeNB is identical, hereafter for convenience, with
For DeRN.
The process that the radio resource of Un interface is distributed for RN is described in detail with reference to the accompanying drawing.
It is the radio resource allocation flow diagram of Un interface in the embodiment of the present application referring to Fig. 3, Fig. 3.Specific steps are as follows:
Step 301, DeRN receives the service request that the first RN is sent.
Step 302, which is that the first RN distributes RN according to the first RN service request sent and interference measurement information
Sub-frame configuration mode；Wherein, it is less than the 2nd RN of preset threshold with the channel relevancy of the first RN if it exists, then the first RN and the
The RN sub-frame configuration mode of the 2nd RN is distributed in two RN space division multiplexings.
The service request of the first RN refers to the business that the first RN needs network side to provide in this step.
Interference measurement information is reported to DeRN by the first RN in this step, is one kind or any number of combination of following information:
The jamming power of each downlink subframe in the location RN；
RN sub-frame configuration mode list: according to the sequence that the disturbed condition in the location RN is ascending according to the interference being subject to
Have recorded each RN sub-frame configuration mode；
The RN sub-frame configuration mode list that the surrounding RN that the location RN detects is used.
The DeRN is that the first RN distributes RN sub-frame configuration mode in this step, is specifically included:
The RN of cell is accessed for first:
If the first RN is the RN of first access cell, N number of RN subframe is selected from available RN sub-frame configuration mode
Configuration mode distributes to the first RN, distributes to the first RN of total business rate satisfaction that each RN sub-frame configuration mode of the first RN provides
Service request.
Here, available RN sub-frame configuration mode is the donor node that the first RN is rejected in all RN sub-frame configuration modes
(DeRN and DeNB) and upper level donor node remaining RN after each RN sub-frame configuration mode that Un interface communication uses
Sub-frame configuration mode.If the donor node (DeRN and DeNB) of the first RN and upper level donor node are while Un interface communication
Support that with the first RN, then available RN sub-frame configuration mode includes all RN sub-frame configuration modes, is not needed in Un interface communication
Reject any RN sub-frame configuration mode.
When to the first RN distribution RN sub-frame configuration mode, according to above-mentioned interference measurement information, preferentially from available RN
Small RN sub-frame configuration mode is interfered to what the first RN distribution was subject in frame configuration mode.
There are many modes that the distribution of RN sub-frame configuration mode is executed according to interference measurement information, and the application provides following several
Specific implementation, but when specific implementation, it is not limited to following implementation:
If interfering metrical information is " jamming power of each downlink subframe in the location RN ", in available RN sub-frame configuration mould
The RN sub-frame configuration mode for being interfered small is preferentially selected in formula.Such as: default jamming power threshold value 1, if a RN subframe is matched
The jamming power for setting the corresponding each downlink subframe of mode is both less than the threshold value, then the interference that the RN sub-frame configuration mode is subject to
It is small, which is preferentially allocated to the first RN.According to the service request of the first RN preferentially be interfered it is small
RN sub-frame configuration mode is selected to distribute to the first RN in RN sub-frame configuration mode, until selected all RN sub-frame configuration modes
Meet the service request of the first RN.If the small all RN sub-frame configuration modes that will be interfered are distributed to the first RN and are all unable to satisfy
The service request of first RN then continues in remaining RN sub-frame configuration mode according in the corresponding each downlink subframe of the mode
The ascending sequence of the number for the downlink subframe being interfered distributes RN sub-frame configuration mode to the first RN, until distributing to the
All RN sub-frame configuration modes of one RN meet the service request of the first RN or all remaining RN sub-frame configuration modes distribute
Finish.Each downlink subframe corresponding for a RN sub-frame configuration mode is preset if the jamming power of a downlink subframe is greater than
Jamming power threshold value 2, then the subframe is the subframe being interfered.Jamming power 2 > jamming power of threshold value threshold value 1.
If interfering metrical information is " RN sub-frame configuration mode list ", only retain available RN sub-frame configuration in the list
Mode obtains new list, distributes RN sub-frame configuration mode to the first RN according to by the sequence after arriving first in new list；
If interfering metrical information is " the RN sub-frame configuration mode list that the surrounding RN that the location RN detects is used ",
When distributing RN sub-frame configuration mode to the first RN, the RN sub-frame configuration mode not in above-mentioned list can be preferentially selected.
For the RN for accessing cell after first RN:
If the first step, the first RN are not the RN of first access cell, for each of the RN accessed before having distributed to
RN sub-frame configuration mode determines each RN for using the RN sub-frame configuration mode, calculates the nothing of the first RN and each RN determined
The correlation of line channel；
Second step is directed to any allocated RN sub-frame configuration mode, according to each RN of the RN sub-frame configuration mode
It is respectively less than preset threshold with the value of the correlation of the wireless channel of the first RN, then the RN sub-frame configuration mode is put into set A；If
Preset threshold is not less than using each RN of the RN sub-frame configuration mode and the value of the correlation of the wireless channel of the first RN entirely, then
The RN sub-frame configuration mode is put into set B；
Third step determines whether set A is empty, if it is not, executing the 4th step；Otherwise, the 6th step is executed；
4th step is distributed according to the first RN service request sent and interference measurement information in set A for the first RN
RN sub-frame configuration mode；By above-mentioned processing, if distributing to total business provided by all RN sub-frame configuration modes of the first RN
Rate can satisfy the service request of the first RN, then terminates this process；Otherwise, the 5th step is executed.
When selecting RN sub-frame configuration mode from set A to a RN, it is also desirable to preferential according to above-mentioned interference measurement information
The RN sub-frame configuration mode for selecting the interference being subject to small.In the case of specific method and the first RN are the RN of first access cell
Distribution method is similar.Specific method is simply described below:
If interfering metrical information is " jamming power of each downlink subframe in the location RN ", according to the service request of the first RN
Preferentially RN sub-frame configuration mode is selected to distribute to the first RN in the RN sub-frame configuration mode for being interfered small in set A, directly
Meet the service request of the first RN to selected all RN sub-frame configuration modes.
If the RN sub-frame configuration mode for being interfered small in set A, which is distributed on the first RN, can not all make to distribute to first
All RN sub-frame configuration modes of RN meet the service request of the first RN, press in remaining RN sub-frame configuration mode in set A
RN sub-frame configuration mode is distributed to the first RN according to the ascending sequence of the number for the downlink subframe being interfered, until distributing to
All RN sub-frame configuration modes of first RN meet all remaining RN sub-frame configuration moulds in the service request or set A of the first RN
Formula is assigned.
If interfering metrical information is " RN sub-frame configuration mode list ", retain available RN sub-frame configuration mould in the list
Formula obtains new list, and the column that the RN sub-frame configuration mode not in set A is further updated are rejected in new list
Table distributes RN sub-frame configuration mode to the first RN according to by the sequence after arriving first from the list.
If interfering metrical information is " the RN sub-frame configuration mode list that the surrounding RN that the location RN detects is used ",
When distributing RN sub-frame configuration mode to the first RN, from the RN sub-frame configuration mode in above-mentioned list is rejected in set A, from update
Set A in selection RN sub-frame configuration pattern configurations give the first RN.
It is being the first RN (no matter the RN that the first RN is RN or first access of first access cell is accessed later
The RN of cell) distribution RN sub-frame configuration mode after need to be recorded as the first RN distribution RN sub-frame configuration mode, so as to subsequent RN
It is that the RN of subsequent access selects RN sub-frame configuration mode, specific choice mode is specifically described below when access.
5th step continues to select RN sub-frame configuration mode to distribute to the first RN from unappropriated RN sub-frame configuration mode,
If distributing to total business rate provided by all RN sub-frame configuration modes of the first RN can satisfy the service request of the first RN,
Then terminate this process；Otherwise, the 7th step is executed.
RN sub-frame configuration mode is selected to distribute to the first RN from unappropriated RN sub-frame configuration mode, it is also desirable to according to upper
State the RN sub-frame configuration mode that interference measurement information preferentially selects the interference being subject to small.The specific method is as follows:
If interfering metrical information is " jamming power of each downlink subframe in the location RN ", from unappropriated RN sub-frame configuration
The RN sub-frame configuration mode for being interfered small is selected to distribute to the first RN in mode, until distributing to all RN subframes of the first RN
Configuration mode meets the service request of the first RN.
If the RN sub-frame configuration mode for being interfered small in unappropriated RN sub-frame configuration mode is distributed on the first RN all
All RN sub-frame configuration modes for distributing to the first RN can not be made to meet the service request of the first RN, in remaining unappropriated RN
Match according to the ascending sequence of the number for the downlink subframe being interfered to the first RN distribution RN subframe in sub-frame configuration mode
Set mode, until distribute to the first RN all RN sub-frame configuration modes meet the first RN service request or it is all it is remaining not
Distribution RN sub-frame configuration mode is assigned.
If interfering metrical information is " RN sub-frame configuration mode list ", retain available RN sub-frame configuration mould in the list
Formula obtains new list, and unappropriated RN sub-frame configuration mode is only retained in new list, rejects from list the allocated
Then RN sub-frame configuration distributes RN sub-frame configuration mode to the first RN according to by the sequence after arriving first in the list；
If interfering metrical information is " the RN sub-frame configuration mode list that the surrounding RN that the location RN detects is used ",
When distributing RN sub-frame configuration mode to the first RN, the RN not in above-mentioned list is preferentially selected in unappropriated RN sub-frame mode
Sub-frame configuration mode.
6th step selects RN sub-frame configuration mode to distribute to the first RN directly from unappropriated RN sub-frame configuration mode；
By above-mentioned processing, if distributing to total business rate provided by all RN sub-frame configuration modes of the first RN can satisfy first
The service request of RN, then terminate this process；Otherwise, the 7th step is executed.
RN sub-frame configuration mode is selected to distribute to the first RN from unappropriated RN sub-frame configuration mode, it is also desirable to according to upper
State the RN sub-frame configuration mode that interference measurement information preferentially selects the interference being subject to small.Specific method is the same as the 5th step.
7th step continues to select RN sub-frame configuration mode to distribute to the first RN in set B, until distributing to the first RN's
The total business rate that all RN sub-frame configuration modes provide meets the service request of the first RN, or all RN subframes are matched in set B
Mode is set all to be assigned.
The detailed process for selecting RN sub-frame configuration mode to distribute to the first RN in set B is given below:
For any RN sub-frame configuration mode in set B, each RN for using the mode is determined, in each RN
The determining all RN for being less than preset threshold with the wireless channel correlation of the first RN, and the RN sub-frame configuration mode is supplied to institute
The resource summation for stating all RN, is denoted as SUM.When in all RN there are when the RN of space division multiplexing same asset, calculating and
When value SUM, the resource spaceing division multiplexi only is accumulated once, and cannot be added up M times.Here, M indicates that corresponding resource is empty by M RN
Divide multiplexing.Such as: the identical resource of RN1 and RN2 space division multiplexing in all RN, the stock number are X, are being calculated
When SUM value, resource X is only cumulatively added once, cannot be cumulatively added twice.
The corresponding resource of SUM value can be by the first RN space division multiplexing, it may be assumed that the first RN can be with all RN described in space division multiplexing
Resource；If the wireless channel correlation of the first RN and any RN using the RN sub-frame configuration mode are all not less than preset threshold,
Then record SUM=0.
If the RN sub-frame configuration mode be supplied to it is each using the sum of resource of RN of the mode be less than the mode provide
Resource then calculates the remaining resource remainder of the RN sub-frame configuration mode；The RN sub-frame configuration mode is provided to the first RN
Resource are as follows: TSUM=SUM+remainder；
By the value of TSUM in set B be not 0 each RN sub-frame configuration mode according to TSUM value to small sequence, obtaining greatly
List 1.In set B select RN sub-frame configuration mode, it is also desirable to according to interference measurement information select, in set B select by
The RN sub-frame configuration mode small to interference.The specific method is as follows:
Determine that the RN sub-frame configuration mode for being interfered small in set B, these modes constitute list 2.It is rejected in list 1
RN sub-frame configuration mode not in list 2, remaining mode sequentially form list 3 according to original；It rejects and is arranging in list 1
RN sub-frame configuration mode in table 2, remaining mode sequentially form list 4 according to original.
The first RN is distributed to according to precedence selection RN sub-frame configuration mode in list 3, until distributing to the first RN
All RN sub-frame configuration modes meet the first RN service request.
If RN sub-frame configuration modes all in list 3, which are distributed to the first RN all, can not make all RN for distributing to the first RN
Sub-frame configuration mode meet the first RN service request, in list 4 according to the number for the downlink subframe being interfered by it is small to
Big sequence distributes RN sub-frame configuration mode to the first RN, until all RN sub-frame configuration modes for distributing to the first RN meet the
All RN sub-frame configuration modes are assigned in the service request or list 4 of one RN.
If interfering metrical information is " RN sub-frame configuration mode list ", retain available RN sub-frame configuration mould in the list
Formula obtains new list, and the RN sub-frame configuration mode being only retained in set B in new list is rejected from list and do not collected
Close the RN sub-frame configuration mode in B.Then RN sub-frame configuration is distributed to the first RN according to by the sequence after arriving first in the list
Mode.
If interfering metrical information is " the RN sub-frame configuration mode list that the surrounding RN that the location RN detects is used ",
When distributing RN sub-frame configuration mode to the first RN, the RN sub-frame configuration mode not in above-mentioned list is preferentially selected in set B.
Step 303, which will distribute to the first RN of RN sub-frame configuration pattern notification of the first RN by dedicated signaling.
In specific implementation, the dedicated signaling for notifying RN sub-frame configuration mode can be RN reallocation message.
RN receives the dedicated signaling that DeRN is sent, and saves as each RN sub-frame configuration mode of its distribution, and feedback response
Message；
When specific implementation, which can complete message for RN reconfiguration.
When distributing RN sub-frame configuration mode for each RN, how to record, know allocated RN sub-frame configuration mode, and
Which RN is allocated RN sub-frame configuration mode be distributed on, and is given below a kind of by two-dimentional RN sub-frame mode allocation list
The method that mode is realized, specific as follows:
Step 1: DeRN initializes two dimension RN sub-frame mode allocation list T when accessing the RN that RN is first access cell
(N,K)。
Specifically, RN sub-frame mode allocation list T (N, K) includes N row K column.The corresponding RN sub-frame configuration mode of every row, N
The corresponding N number of RN sub-frame configuration mode of row, each RN sub-frame configuration mode correspond to one group of money that RN can be individually distributed in Un interface
Source, the different corresponding resources of RN sub-frame configuration mode are non-overlapping.Each column corresponds to a RN, shares K column, indicates that the cell is most
Support K RN access.Each element in the table is initialized as 0 by DeNB or DeRN.
Available RN sub-frame configuration mode in the table is determined under different scenes:
If the donor node (DeRN and DeNB) of the first RN and upper level donor node can not while Un interface communication
It is communicated with the first RN, then rejects the donor node (DeRN and DeNB) and upper level of the first RN in all RN sub-frame configuration modes
Each RN sub-frame configuration mode that donor node is used in Un interface communication, remaining RN sub-frame configuration mode are available RN
Frame configuration mode.
If the donor node (DeRN and DeNB) of the first RN is supported while Un interface communication with upper level donor node
With the first RN in Un interface communication, then available RN sub-frame configuration mode includes all RN sub-frame configuration modes, does not need to reject
Any RN sub-frame configuration mode.
If the first RN and upper level donor node support the cell with access the first RN while Un interface communication
UE in Uu interface communication, then available RN sub-frame configuration mode includes all RN sub-frame configuration modes, does not need to reject any
RN sub-frame configuration mode.
It, will be in table T (N, K) if the mode is not available RN sub-frame configuration mode for RN sub-frame configuration mode n
Each element of row n is arranged to -1, indicates that the RN sub-frame configuration mode can not be allocated to any RN of access cell, the mode is not
It can use.
Step 2: DeRN distributes subscript to the RN of access.
Specifically, there is K subscript that can distribute, subscript value is from 0 to K-1.RN, DeNB or the DeRN of access are never divided
The smallest subscript is taken to distribute to the RN in the subscript matched.The RN of cell is accessed for first, is designated as 0 under the RN.
Step 3: DeNB or DeRN determines what the RN was used to relevant interference measurement information according to the service request of the RN
RN sub-frame configuration mode.
Specifically, with the RN for being designated as k under RN (k) expression.DeNB or DeRN is to each RN distribution RN sub-frame configuration mode
Method is as follows:
As k=0, for RN (k), DeNB or DeRN according to the service request of the RN and relevant interference measurement information from
Several RN sub-frame configuration modes are distributed to the RN in available RN sub-frame configuration mode in T (N, K) table.Distribute to the RN's
The total business rate that each RN sub-frame configuration mode provides should meet the business application of RN.
For distributing to each RN sub-frame configuration mode n1 of the RN, by the element of the n-th 1 row kth column in T (N, K) table
It is set as 1.
When k is not 0, for RN (k), for accessing each RN sub-frame configuration mode n2 of RN before being already allocated to,
DeNB or DeRN determines each RN for using the mode.Calculate separately the correlation of the wireless channel of RN (k) and these RN.
Specifically, DeNB or DeRN according to the allocated RN sub-frame configuration mode of table T (N, K) determination and uses this
Each RN of mode.For the n-th 2 rows in table T (N, K), it is worth under the column for 1 each element and is designated as using RN sub-frame configuration mould
The subscript of each RN of formula n2.
If RN (k) and the correlation of the wireless channel of each RN using the RN sub-frame configuration mode are both less than preset threshold
RN sub-frame configuration mode n2 is then put into set A by TH；Otherwise, RN sub-frame configuration mode n2 is put into set B.
Specifically, if RN (k) and the correlation of the wireless channel of each RN using the mode are both less than preset threshold value
TH, then RN (k) can be with each RN space division multiplexing mode for having used the mode.
DeRN selects several RN subframes to match to relevant interference measurement information according to the service request of the RN from set A
Mode is set, by these pattern configurations to RN (k).
If when RN sub-frame configuration modes all in set A being distributed to RN (k) being all unable to satisfy the service request of the RN,
DeNB or DeRN continues to distribute RN sub-frame configuration mode to the RN in accordance with the following methods.
Preferentially select several pattern configurations to the RN from unappropriated RN sub-frame configuration mode.Until distributing to the RN
The total business rate that provides of all RN sub-frame configuration modes meet the business application or unappropriated RN sub-frame configuration mode of RN
All it is assigned.
If unappropriated RN configuration mode is all assigned, distribute to what the RN sub-frame configuration mode of the RN can be provided
Total business rate is not able to satisfy the business application of the RN, then selects several pattern configurations to the RN from set B, until distributing to
The total business rate that all RN sub-frame configuration modes of the RN provide meets and all in the service request or set B of the RN can divide
The RN sub-frame configuration mode matched all is assigned.
Specifically, when distributing RN sub-frame configuration mode in set B, for each RN sub-frame configuration mode in set B
N3 executes following processing:
(1) if, RN (k) and using the mode one or more RN wireless channel correlation be less than TH, by the mould
Formula is supplied to the resource summation of these RN, and record is somebody's turn to do and value SUM (n3), and should and be worth corresponding resource can be by RN (k) spatial division multiplexing
With；If RN (k) and the wireless channel correlation of any RN using the RN sub-frame configuration mode are all not less than TH, SUM is recorded
(n3)=0.
(2) if, the RN sub-frame configuration mode be supplied to it is each using the sum of resource of RN of the mode be less than the mode mention
The resource of confession then calculates the remaining resource remainder (n3) of the mode.
(3), the RN sub-frame configuration mode can be supplied to the resource of RN (k) are as follows: and TSUM (n3)=SUM (n3)+
remainder(n3)。
(4), for TSUM (n3) in set B for 0 each RN sub-frame configuration mode according to TSUM (n3) from greatly to small
Sequence generates list 1.
Determine that the RN sub-frame configuration mode for being interfered small in set B, these modes constitute list 2.It is rejected in list 1
RN sub-frame configuration mode not in list 2, remaining mode sequentially form list 3 according to original；It rejects and is arranging in list 1
RN sub-frame configuration mode in table 2, remaining mode sequentially form list 4 according to original.
The first RN is distributed to according to precedence selection RN sub-frame configuration mode in list 3, until distributing to the first RN
All RN sub-frame configuration modes meet the first RN service request.
If RN sub-frame configuration modes all in list 3, which are distributed to the first RN all, can not make all RN for distributing to the first RN
Sub-frame configuration mode meet the first RN service request, in list 4 according to the number for the downlink subframe being interfered by it is small to
Big sequence distributes RN sub-frame configuration mode to the first RN, until all RN sub-frame configuration modes for distributing to the first RN meet the
All RN sub-frame configuration modes are assigned in the service request or list 4 of one RN.
For distributing to each RN sub-frame configuration mode n4 of RN (k), by the element of the n-th 4 row of kth column in T (N, K) table
It is set as 1.
In the embodiment that the mode using two-dimentional RN sub-frame mode configured list realizes the distribution of RN sub-frame configuration mode, institute
Stating interference measurement information is following a kind of or any number of combinations:
The jamming power of each downlink subframe in the location RN
RN sub-frame configuration mode list, the list are ascending according to the interference received according to the disturbed condition in the location RN
The each RN sub-frame configuration mode of journal.
The RN sub-frame configuration mode list that the surrounding RN that the location RN detects is used.
In specific implementation, can also after all RN subframes in set A are assigned, and distribute RN sub-frame configuration
When total business rate provided by mode is not able to satisfy the service request of the RN, assignable RN is preferentially selected from set B
Frame configuration mode is allocated；If after all available RN subframes in set B are assigned, and the RN sub-frame configuration mould distributed
When total business rate provided by formula is not able to satisfy the service request of the RN, the selection pair from unappropriated RN sub-frame configuration mode
Selection distribution is carried out in the RN configuration mode answered.
In the embodiment of the present application when carrying out the distribution of Un interface resource, distributes except RN sub-frame configuration mode, be also first
RN configures SRS (Sounding Reference Signal, Sounding Reference Signal) resource, and is notified by dedicated signaling
First RN；CQI (Channel Quality Indicator, channel report quality to indicate), which is configured, for the first RN reports resource, and
The first RN is notified by dedicated signaling.
When specific implementation, which can be RRC connection reconfiguration message.
First RN receives the dedicated signaling that DeRN is sent, and saves relevant configuration information, and feedback response message.
When specific implementation, which is that RRC connection reconfiguration completes message.
DeRN is according to the first the RN SRS sent and DMRS (Demodulation Reference Signal, demodulation reference
Signal) obtain the first RN uplink wireless channel estimation；
DeRN estimates generation beamforming vector according to the uplink wireless channel of acquisition, uses the beamforming vector of generation
Wave beam forming is carried out to the downlink signal of the first RN；
SINR (the Signal to of the first RN up channel of acquisition is estimated according to the uplink wireless channel of acquisition
Interference plus Noise Ratio, signal-to-noise ratio), PUSCH resource is dispatched to the first RN according to the SINR.
And estimate that calculating the first RN and other has accessed the nothing between the RN of cell according to the uplink wireless channel of acquisition
The value of line channel relevancy.
DeRN gives the first RN distribution R-PDCCH (relaying physical downlink control channel) according to the CQI that the first RN is reported
With PDSCH (Physical Downlink Shared Channel, Physical Uplink Shared Channel) resource.
In conclusion the application by receive RN uplink signal, estimate RN uplink wireless channel and difference RN it
Between channel relevancy can be with space division multiplexing between the two RN when channel is uncorrelated or when correlation is very weak between two RN
RN sub-frame configuration mode can save RN sub-frame configuration mode, improve Un interface resource utilization rate.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (10)
1. a kind of Un interface resource distribution method, applied to the cell pair for hanging relay node RN under the support in multilevel relay networking
It answers in equipment, which is characterized in that this method comprises:
When receiving the service request of the first RN transmission, it is according to the first RN service request sent and interference measurement information
First RN distributes RN sub-frame configuration mode；Wherein, it is less than the 2nd RN of preset threshold with the channel relevancy of the first RN if it exists,
Then the RN sub-frame configuration mode of the 2nd RN is distributed in the first RN and the 2nd RN space division multiplexing；
And the first RN of RN sub-frame configuration pattern notification of the first RN will be distributed to by dedicated signaling.
2. the method according to claim 1, wherein described is the first RN distribution RN sub-frame configuration mode, comprising:
If the first RN is the RN of first access cell, N number of RN sub-frame configuration is selected from available RN sub-frame configuration mode
Mode distributes to the first RN, and the total business rate for distributing to each RN sub-frame configuration mode offer of the first RN meets the industry of the first RN
Business request.
3. the method according to claim 1, wherein the method further includes:
If the first RN is not the RN of first access cell, for each RN sub-frame configuration mould of the RN accessed before having distributed to
Formula determines each RN for using the RN sub-frame configuration mode, and it is related to the wireless channel of each RN determined to calculate the first RN
Property；
For any allocated RN sub-frame configuration mode, according to the nothing of each RN and the first RN of the RN sub-frame configuration mode
The value of the correlation of line channel is respectively less than preset threshold, then the RN sub-frame configuration mode is put into set A；
It is the first RN in set A according to the first RN service request sent and interference measurement information if set A is not empty
Distribute RN sub-frame configuration mode.
4. according to the method described in claim 3, it is characterized in that, the method further includes:
When all RN sub-frame configuration modes in set A are distributed to the first RN, and all RN of the first RN are distributed to
When the total business rate that frame configuration mode provides is unable to satisfy the service request of the first RN, continue from unappropriated RN sub-frame configuration
RN sub-frame configuration mode is selected to distribute to the first RN in mode.
5. according to the method described in claim 4, it is characterized in that, the method further includes:
To any allocated RN sub-frame configuration mode, according to the RN sub-frame configuration mode each RN and the first RN it is wireless
The value of the correlation of channel is not less than preset threshold entirely, then the RN sub-frame configuration mode is put into set B；
When unappropriated RN sub-frame configuration mode is distributed to the first RN, and all RN sub-frame configurations of the first RN are distributed to
When the total business rate that mode provides is unable to satisfy the service request of the first RN, continue to select RN sub-frame configuration mould in set B
Formula distributes to the first RN, until the total business rate that all RN sub-frame configuration modes for distributing to the first RN provide meets the first RN
Service request, or all RN sub-frame configuration modes are all assigned in set B.
6. according to the method described in claim 5, it is characterized in that, described select the distribution of RN sub-frame configuration mode in set B
To the first RN, comprising:
For any RN sub-frame configuration mode in set B and use each RN of the mode, the determining wireless communication with the first RN
Road correlation is less than all RN of preset threshold, and the resource that the RN sub-frame configuration mode is supplied to all RN is summed,
It is denoted as SUM；
If the RN sub-frame configuration mode is supplied to each resource for being less than mode offer using the sum of resource of RN of the mode,
Then calculate the remaining resource remainder of the RN sub-frame configuration mode；The RN sub-frame configuration mode is provided to the money of the first RN
Source are as follows: TSUM=SUM+remainder；
By the value of TSUM in set B be not 0 each RN sub-frame configuration mode according to TSUM value from greatly to small sequence, after sequence
Sequence in selection RN sub-frame configuration mode distribute to the first RN, mentioned until distributing to all RN sub-frame configuration modes of the first RN
The total business rate of confession meets all RN sub-frame configuration modes in the service request or the sequence of the first RN and is all assigned.
7. method according to claim 1-6, which is characterized in that the interference measurement information be it is following a kind of or
Any number of combination:
The jamming power of each downlink subframe in the location RN；
RN sub-frame configuration mode list: according to the journal that the disturbed condition in the location RN is ascending according to the interference being subject to
Each RN sub-frame configuration mode；
The RN sub-frame configuration mode that the surrounding RN that the location RN detects is used.
8. method according to claim 1-6, which is characterized in that the cell for hanging RN under the support corresponds to equipment
For donor base station DeNB or alms giver's relay node DeRN.
9. method according to claim 1-6, which is characterized in that the method further includes:
For the first RN configurating channel detection reference signal SRS resource, and the first RN is notified by dedicated signaling；
The uplink wireless channel estimation of the first RN is obtained according to the first RN SRS sent and demodulated reference signal DMRS；
Estimated to generate beamforming vector according to the uplink wireless channel of acquisition, using the beamforming vector of generation to the first RN
Downlink signal carry out wave beam forming；
Estimate that calculating the first RN and other has accessed the wireless channel between the RN of cell according to the uplink wireless channel of acquisition
Correlation；
And estimate to obtain the signal-to-noise ratio SINR of the first RN up channel according to the uplink wireless channel of acquisition, it is dispatched according to the SINR
Physical Uplink Shared Channel PUSCH resource gives the first RN.
10. the method according to claim 1, wherein the method further includes:
Resource is reported for the first RN configurating channel quality indicator (CQI), and the first RN is notified by dedicated signaling；
The first RN distribution relaying physical downlink control channel R-PDCCH and PDSCH money is given according to the CQI that the first RN is reported
Source.
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| CN113133130A (en) * | 2019-12-30 | 2021-07-16 | 成都鼎桥通信技术有限公司 | Communication method and device |
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