CN103313395B - The implementation method of multi-user's multiple-input and multiple-output and device in relay transmission system - Google Patents
The implementation method of multi-user's multiple-input and multiple-output and device in relay transmission system Download PDFInfo
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- CN103313395B CN103313395B CN201210057494.8A CN201210057494A CN103313395B CN 103313395 B CN103313395 B CN 103313395B CN 201210057494 A CN201210057494 A CN 201210057494A CN 103313395 B CN103313395 B CN 103313395B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses implementation method and the device of multi-user's multiple-input and multiple-output in a kind of relay transmission system, base station determines the first user of corresponding trunk type in pairing user's group of place relay transmission system, and the PRB that the R PDCCH being defined as first user distribution takies, with the 2nd PRB of a PRB correspondence position in the PRB that the PDSCH of second user's distribution except described first user in addition to of being further determined as matching in user's group takies, and to control to reduce at the transmitting power of the 2nd PRB transmitting data or configure the 2nd PRB be silent status.According to this technical scheme, base station can control the 2nd PRB transmitting data with a PRB correspondence position transmitting power reduce or configuration the 2nd PRB be silent status, thus reduce the interference that on the PDSCH of pairing user, R PDCCH transmission is existed by the data of transmission, improve the performance of relay transmission system.
Description
Technical field
The present invention relates to wireless communication technology field, how defeated particularly relate to multi-user in a kind of relay transmission system
Enter implementation method and the device of multi output.
Background technology
In order to tackle the wireless propagation environment of various complexity, the following LTE of solution (Long Term Evolution,
Long Term Evolution) covering problem of network design, 3GPP (3rd Generation Partnership Project,
Third generation partnership project) in LTE-Advanced R10 (upgraded version 10 of Long Term Evolution) agreement
Relaying (i.e. Relay) is standardized.
Fig. 1 shows the schematic diagram of the relay transmission system including trunking, as it is shown in figure 1, pass through
A trunking, straight between base station and terminal is added between base station and terminal (referring generally to user terminal)
Pass link and be divided into two sections of links: one section of link is the Radio Link between base station and trunking, this section of chain
Road is referred to as return link, and another section of link is the Radio Link between trunking and terminal, and this section of link claims
For access link.At present, in relaying in trunking scheme is generally divided into band outside (i.e. Inband Relay) and band
Continue (i.e. Outband Relay), wherein, in band under trunking scheme, return link with access link identical
Band resource in transmission data and time division multiplex, carry under outer trunking scheme, return link and access link exist
Different transmitted in band data and frequency division multiplexing.
Based on the relay transmission system shown in Fig. 1, two sections obtained by disposing trunking in a network
Link can have the propagation distance more shorter than the link that direct transfers, and the shelter in round also can subtract simultaneously
Few so that two sections of links after fractionation all have radio propagation conditions more more preferable than the link that direct transfers and higher biography
Movement Capabilities.Trunking can provide wireless backhaul function, cannot arrive or wired passback at some optical fiber
Build relatively difficult scene, such as, the residence at family cannot be arrived without the indoor office environments of administration of room branch, optical fiber
Min Lou, without the micro-covering scene in city of wired passback, remote suburb or rural area etc., had wireless by introducing
The trunking of retransmission function effectively expanding coverage area of network and enhancing can cover signal.
As it has been described above, relay transmission system can expanding coverage area of network and strengthen cover signal, therefore,
Introducing trunking in a transport network is the important directions that future network is disposed, and how to improve relay transmission network
The performance of network becomes an emphasis of current network research.The one side of the performance of relay transmission network is embodied in
(Relay Physical Downlink Control Channel, under relaying physics to R-PDCCH for user data
Row control channel) interference size, user data is the least to the interference of R-PDCCH, relay transmission network
Performance the best.At present, in relay transmission system, the base station side configuration major embodiment to R-PDCCH
Configure and demodulate the aspects such as pilot frequency configuration in scheduling of resource, transmission mode, specific as follows:
(1) scheduling of resource:
DCI (the Downlink Control of the return link that R10 standard is relay transmission system of LTE-A
Information, down link control information) transmission defines R-PDCCH, R-PDCCH at passback chain
The descending sub frame transmission data on road, send downlink and uplink scheduling of resource signaling for base station to trunking.
Scheduling of resource schematic diagram as shown in Figure 2, in time domain, the DL Grant (Downlink of R-PDCCH
Grant, downstream grants) take the 1st time interval resource of descending sub frame, UL Grant (Uplink Grant,
Uplink authorization) the 2nd time interval resource of channel occupancy descending sub frame；On frequency domain, R-PDCCH takies
Integer RB (Resource Block Resource Block) resource, this RB resource can be that continuous RB can also
For discontinuous RB, the RB resource specifically taken by high-level signaling distribution R-PDCCH, this high-level signaling can
Think RRC (Radio Resource Control, radio resource control) signaling.
(2) transmission mode configuration
The transmission mode support intertexture pattern of R-PDCCH and non-interlacing mode.Wherein, R-PDCCH interweaves
Pattern and the place of PDCCH (physical downlink control channel, Physical Downlink Control Channel)
Managing similar, CCE (Control Channle Element controls Channel Elements) is resource logic unit,
REG (RE Group, RE group) is resource physical location, and the control information of user is with REG as least resource
Allocation unit multiplexing is in RB resource and is interleaved with randomization search volume, intertexture pattern
R-PDCCH is only capable of supporting public guide frequency CRS (Cell-specific RS, the proprietary pilot tone in community) demodulation.
R-PDCCH non-interlacing mode and PDSCH (Physical Downlink Shared Channel, physical down
Share channel) process similar, R-PDCCH with PRB (Physical Resource Block, physics provide
Source block) it is unit transmission, polymerization grade (Aggregation level) represents the PRB number used.With
The control information at family is with PRB for minimum resource allocation unit, it is not necessary to be interleaved the most non-randomization search
Space.Now, the resource of R-PDCCH maps quite similar with PDSCH so that R-PDCCH can
Obtain the gain of precoding, improve the reliability of DCI transmission.The R-PDCCH of non-interlacing mode is permissible
Support public guide frequency CRS and DMRS (Demodulation Reference Signal, demodulated reference signal)
Demodulation, when using DMRS demodulation, R-PDCCH is fixed on antenna port 7 (transmitting on Port 7).
(3) demodulation pilot frequency configuration:
The R10 system of LTE-A is that the downstream data channel transmission of relaying return link defines demodulation pilot tone
DMRS, for ensureing the GD (Guard Period, protection interval) that up-downgoing transmitting-receiving handoff reservation is certain, returns
Pass link subframe last 1 OFDM (Orthogonal Frequency Division Multiplexing,
OFDM) symbol cannot be used for data transmission, and can not be used for sending DMRS and demodulate pilot tone.
Along with the development of relay transmission system, in order to make relay transmission system carry more user,
Relay transmission system introducing MU-MIMO (multi-user multiple input multiple output, multiplex
Family multiple-input and multiple-output) technology.MU-MIMO refers to pairing user scheduling on the same resource block, logical
Cross space division multiplexing mode and send the data of oneself, improve the spectrum efficiency of transmission.Mark at LTE R9/R10
Defined in standard, the MU-MIMO scheme of access link is transparent for user, the solution between pairing user
Pilot tone is adjusted to distribute based on DMRS port 7 (Port 7) and port 8 (Port 8) and sequence scrambler
(Scrambling ID=0 or 1) realizes.MU-MIMO maximum supports 4 streams, could support up 4 and joins
To user, each user's maximum transmitted 2 flows；When MU-MIMO transmission is not more than 2 stream, can be based on
DMRS port 7 (Port 7) and port 8 (Port 8) realize orthogonal DMRS, when MU-MIMO is big
When 2 flow, realize quasi-orthogonal DMRS by sequence scrambler (Scrambling ID=0 or 1).Join
The PDSCH data transmission associating precoding algorithms based on multi-user of user is realized space division multiplexing with suppression
Inter-user interference.
At present, industry proposes relaying return link is realized MU-MIMO and continued to use in LTE R9/R10 standard
The implementation of the MU-MIMO of the access link of definition, the program can there are the following problems:
User's pairing of MU-MIMO is probably UE (User Equipment, subscriber equipment) and UE,
Trunking and trunking, or trunking and UE, if network side does not do particularly process, by
Control the RB resource that takies of channel R-PDCCH in relaying return link configured by network side and pass through high level
Signal trunking, although use space division multiplexing, but owing to space division multiplexing does not ensures that R-PDCCH
The most orthogonal with the PDSCH of user, therefore, the transmission of the R-PDCCH of return link is to a certain degree
Upper meeting is subject to disturbing of the data transmitted on the PDSCH of pairing user.
In sum, existing relay transmission system realize in the scheme of MU-MIMO, pairing user's
There is interference to R-PDCCH transmission in the data of the upper transmission of PDSCH, reduces the property of relay transmission system
Energy.
Summary of the invention
In view of this, multi-user's multiple-input and multiple-output during the embodiment of the present invention provides a kind of relay transmission system
Implementation method and device, use this technical scheme, it is possible to reduces transmission on the PDSCH of pairing user
The interference that R-PDCCH is transmitted by data, to improve the performance of relay transmission system.
The embodiment of the present invention is achieved through the following technical solutions:
An aspect according to embodiments of the present invention, it is provided that multi-user's multi input in a kind of relay transmission system
The implementation method of multi output, including:
Base station determines the first user of corresponding trunk type in pairing user's group of place relay transmission system, and
It is defined as the first physics that the relaying Physical Downlink Control Channel R-PDCCH of described first user distribution takies
Resource Block PRB；
Be defined as described pairing user's group in except described first user in addition to second user distribute physics under
Row shares the 2nd PRB in the PRB that channel PDSCH takies with a described PRB correspondence position；
Control the transmitting power at described 2nd PRB transmitting data reduce or configure described 2nd PRB and be
Silent status.
Another aspect according to embodiments of the present invention, additionally provides multi-user in a kind of relay transmission system many
Input multi output realizes device, including:
First user determines unit, corresponding trunk type in the pairing user's group determining relay transmission system
First user；
Oneth PRB determines unit, for being defined as the first user that described first user determines that unit determines
The first Physical Resource Block PRB that the relaying Physical Downlink Control Channel R-PDCCH of distribution takies；
2nd PRB determines unit, is used for being defined as in described pairing user's group except described first user determines
The Physical Downlink Shared Channel PDSCH of second user's distribution outside the first user that unit determines takies
PRB determines the 2nd PRB of the PRB correspondence position that unit determines with a described PRB；
Configuration control unit, for controlling to determine that the 2nd PRB that unit determines uploads at described 2nd PRB
The transmitting power of transmission of data reduces or configures described 2nd PRB is silent status.
At least one technical scheme above-mentioned provided by the embodiment of the present invention, base station determines place relay transmission
The first user of corresponding trunk type in pairing user's group of system, and it is defined as first user distribution
The PRB that R-PDCCH takies, is further determined as matching in user's group in addition to described first user
Second user's distribution the PRB that takies of PDSCH in the 2nd PRB of a PRB correspondence position,
And control at the reduction of transmitting power or configuration the 2nd PRB of the 2nd PRB transmitting data to be silent status.
According to this technical scheme, base station can control the 2nd PRB transmitting data with a PRB correspondence position
Launch power reducing or configure the 2nd PRB is silent status, thus reduces on the PDSCH of pairing user
The interference that R-PDCCH transmission is existed by the data of transmission, improves the performance of relay transmission system.
Other features and advantages of the present invention will illustrate in the following description, and, partly from explanation
Book becomes apparent, or understands by implementing the present invention.The purpose of the present invention and other advantages can
Realize by structure specifically noted in the specification write, claims and accompanying drawing and obtain
?.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for specification, with this
Bright embodiment is used for explaining the present invention together, is not intended that limitation of the present invention.In the accompanying drawings:
The schematic diagram of the relay transmission system including trunking that Fig. 1 provides for background technology；
The scheduling of resource schematic diagram that Fig. 2 provides for background technology；
In the relay transmission system that Fig. 3 provides for the embodiment of the present invention one, the implementation method of MU-MIMO is corresponding
Schematic flow sheet；
One scene signal of the MU-MIMO of the relay transmission system that Fig. 4 provides for the embodiment of the present invention one
Figure；
Fig. 5 distributes for RNI, RN2 and the UE in pairing user's group for what the embodiment of the present invention one provided
Transfer resource schematic diagram；
The PRB signal of the data punching front pairing user correspondence respectively that Fig. 6 provides for the embodiment of the present invention one
Figure；
The PRB signal that the user that matches after the data punching that Fig. 7 provides for the embodiment of the present invention one is the most corresponding
Figure；
The realization of multi-user's multiple-input and multiple-output in the relay transmission system that Fig. 8 provides for the embodiment of the present invention two
The structural representation of device.
Detailed description of the invention
In order to provide the interference that on the PDSCH reducing pairing user, R-PDCCH is transmitted by the data of transmission
Implementation, embodiments provide multi-user's multiple-input and multiple-output in a kind of relay transmission system
The preferred embodiments of the present invention are illustrated by implementation method and device below in conjunction with Figure of description, should
Working as understanding, preferred embodiment described herein is merely to illustrate and explains the present invention, is not used to limit this
Invention.And in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutual
Combination.
Embodiment one
According to embodiments of the present invention one, it is provided that multi-user's multiple-input and multiple-output in a kind of relay transmission system
Implementation method, by applying the method, it is possible to reduce the PDSCH of pairing user in relay transmission system
The interference that R-PDCCH is transmitted by the data of upper transmission.
Fig. 3 shows the realization of multi-user's multiple-input and multiple-output in the relay transmission system that this embodiment one provides
The schematic flow sheet that method is corresponding, specifically, the method mainly comprises the steps:
Step 301, base station determine the use of corresponding trunk type in pairing user's group of place relay transmission system
Family.
In this step 301, identical in pairing user group this relay transmission system i.e. in relay transmission system
Resource Block on user's group of being scheduling, the pairing user in this pairing user's group potentially includes ordinary terminal
The user (i.e. UE) of type, it is also possible to include user's (i.e. trunking) of trunk type.Ordinary circumstance
Under, base station can determine the type of this user according to the mark that each user in pairing user's group is corresponding.For ease of
Subsequent descriptions, the user of the corresponding trunk type determined in this step 301 is referred to as first user, it should reason
Solving, the user included based on pairing user's group is different, the quantity of the first user that this step 301 is determined
Can be one or at least two.
The R-PDCCH of the first user distribution that step 302, base station are defined as corresponding trunk type takies
PRB。
In this step 302, base station, mainly from the PRB dispatched for first user, is determined as in correspondence
The PRB that the R-PDCCH of user's distribution of the type that continues takies.Specifically, base station is in advance for pairing user's group
In each user distribute the PRB shared by the R-PDCCH that this user is corresponding, and by relevant distribution information
Being saved in configuration file, base station directly can determine the R-PDCCH of first user by this configuration file
The PRB taken.For ease of subsequent descriptions, this step 302 is determined for first user distribution
The PRB that R-PDCCH takies is referred to as a PRB.
Step 303, base station are defined as the user's distribution in this pairing user's group in addition to first user
With the PRB of a PRB correspondence position in the PRB that PDSCH takies.
In this step 303, base station is mainly from for user scheduling in addition to first user this pairing user's group
PRB in, determine in this pairing user's group in addition to first user user distribution PDSCH account for
PRB in the PRB of a PRB correspondence position.Specifically, the first user in pairing user's group
For the user of corresponding trunk type, in this pairing user's group, the second user in addition to first user is the most right
Answer the user (i.e. UE) of terminal type.I.e. corresponding with a PRB with the PRB of a PRB correspondence position
The PRB of identical time-frequency location.For ease of subsequent descriptions, by this pairing user's group in addition to first user
User is referred to as the second user, and the PDSCH for second user's distribution this step 303 determined takies
In PRB, the PRB with a PRB correspondence position is referred to as the 2nd PRB.
In actual application, owing to first user and the second user are pairing user, therefore, base station is the first use
The PRB of family scheduling and the corresponding identical time-frequency location of PRB for the second user scheduling.
Step 304, base station control to reduce or configuration second at the transmitting power of the 2nd PRB transmitting data
PRB is silent status.
In this step 304, the transmitting merit at the 2nd PRB transmitting data can be controlled according to actual conditions
Rate reduces or configuration the 2nd PRB is silent status, such as, if wishing to transmit on the PDSCH of pairing user
Data to R-PDCCH transmission interfere, it is silent status that base station can configure the 2nd PRB, joins
Putting after the 2nd PRB is silent status, network side does not dispatch the 2nd PRB, and the i.e. the 2nd PRB does not passes
Transmission of data, from without interfering the R-PDCCH that the PRB of identical time-frequency location is corresponding；If wishing
Reducing the data of transmission on the PDSCH of pairing user and R-PDCCH transmits the interference caused, base station can
Reduce with the transmitting power controlled at the 2nd PRB transmitting data, to reduce interference.
So far, the implementation method of multi-user's multiple-input and multiple-output in the relay transmission system that this embodiment one provides
Corresponding flow process terminates.By the flow process that this Fig. 3 is corresponding, base station can control and a PRB correspondence position
The transmitting power of the 2nd PRB transmitting data reduce or configuration the 2nd PRB is silent status, thus drop
The interference to R-PDCCH transmission existence of the data of the upper transmission of PDSCH of low pairing user, improves
The performance of relay transmission system.
The handling process corresponding for being further appreciated by Fig. 3, illustrates below in conjunction with concrete application scenarios.
Fig. 4 shows a scene schematic diagram of the MU-MIMO of relay transmission system, as shown in Figure 4,
Base station carries RN1 (relaying 1), RN2 and UE, this RN1, RN2 and UE are pairing user
Group, then the implementation method of MU-MIMO provided based on Fig. 3, for the RNI in this pairing user's group,
The transfer resource schematic diagram of RN2 and UE distribution is as it is shown in figure 5, in RN1 correspondence R-PDCCH
PRB upper (PRB1), for reducing interference, in the PRB that RN2 with UE is corresponding, with this PRB1 identical
PRB2 and PRB3 of time-frequency location will be controlled fall power transmission signal or be configured to silent status；
On the PRB of RN2 correspondence R-PDCCH (PRB4), for reducing interference, RN2 with UE is corresponding
In PRB, fall power emission will be controlled with this PRB4 at PRB5 and PRB6 of identical time-frequency location
Signal or be configured to silent status.Wherein, if by this PRB1 at the PRB2 of identical time-frequency location and
PRB3 fall power sends signal, or by with this PRB4 at PRB5 and PRB6 of identical time-frequency location
Fall power transmission signal, will not waste the PRB resource of pairing user, and PRB fall power is by network side
Dispatching algorithm realizes, it is not necessary to extra signals fall power configuration；If by this PRB1 at identical time-frequency
PRB2 and PRB3 of position is configured to silent status, or by with this PRB4 at identical time-frequency location
PRB5 and PRB6 is configured to silent status, then to R-PDCCH entirely without interference, in improving
The return link DCI that continues detects performance.
Still further provides the step 304 that Fig. 3 correspondence flow process includes one is preferable to carry out the present embodiment one
Mode, in this preferred embodiment, base station is controlling the transmitting power fall at the 2nd PRB transmitting data
Time low, can need consideration system that transmission data are transmitted the requirement of quality, i.e. be avoided to reduce interference
And cause data to send failed problem.Specifically, the minimum transmission quality of transmission data can be preset
Requirement, if, it is desirable to the bit error rate or Block Error Rate are less than setting value, base station is uploaded at the 2nd PRB controlling
When the transmitting power of transmission of data reduces, can first determine the minimum transmission quality of the transmission data meeting setting
The minimum emissive power required, and control the transmitting power at the 2nd PRB transmitting data and be more than or equal to
Reducing in the range of this minimum emissive power, the minimum i.e. reducing transmitting power should be determined for this
Little transmitting power.Wherein it is determined that meet the minimum transmitting of the minimum transmission quality requirements of the transmission data set
During power, can the particular type of transmission quality as requested and determine, it is preferable that determine effect for improving
Rate, can preset the corresponding relation of transmission quality and minimum emissive power, based on this corresponding relation, really
Make and meet the minimum emissive power setting transmission quality requirements.
In the preferred embodiment that the present embodiment one provides, for reducing interference further, base station is for joining
When user's component is joined the PRB that R-PDCCH takies, if this pairing user's group includes at least two
One user (i.e. the user of at least two correspondence trunk type), then need in correspondence in this pairing user's group
The R-PDCCH of the return link of the different user of the type that continues dispatches on different PRB.Correspondingly, exist
In above-mentioned steps 301, if the first user that base station is determined is at least two, then in step 302, base
The PRB that the R-PDCCH of the first user distribution that station is defined as corresponding trunk type takies, it may be assumed that
Base station is defined as the correspondence not coordination that the R-PDCCH that this at least two first user is respectively allocated takies
The PRB put.
Correspondingly, in above-mentioned steps 303, base station is defined as the PDSCH of second user's distribution and takies
With the 2nd PRB of a PRB correspondence position in PRB, it may be assumed that
First base station determines the second user in pairing user's group in addition at least two first user；
If it is determined that the second user be one, it is determined that the PDSCH for this second user distribution takies
In PRB, respectively with the second of the PRB correspondence position being respectively allocated at least two first user
PRB；
If it is determined that the second user be at least two, then for each second user, be defined as this second use
In the PRB that the PDSCH of family distribution takies, respectively with first be respectively allocated at least two first user
2nd PRB of PRB correspondence position.
In the preferred embodiment that the present embodiment one provides, on the basis of performing Fig. 3 correspondence flow process, also may be used
With the further processing procedure performing to reduce Pilot Interference, specifically, reducing Pilot Interference, main execution is such as
Lower processing procedure:
Base station, for each PRB for the second user scheduling, determines the RE (Resource that this PRB includes
Element, Resource Unit) in, pilot tone RE that DMRS takies；
It is defined as in the RE that includes of the PRB with this PRB correspondence position of first user distribution, and determines
The pilot tone RE correspondence position gone out and the RE transmitted for data, and to this and pilot tone RE correspondence position and use
Data punching is carried out in the RE of data transmission.RE is carried out data punching, does not i.e. transmit on this RE
Data, namely data transmit on the RE being carried out outside the RE of data punching.
For ease of understanding the processing procedure of above-mentioned reduction Pilot Interference, below in conjunction with described in Fig. 6 and Fig. 7
Concrete example, is specifically described the process reducing Pilot Interference for a PRB:
Schematic diagram corresponding for PRB as shown in Figure 6, in the PRB that the subframe structure of the second user is corresponding,
DMRS takies the four row RE (these four row RE can be described as pilot tone RE) of this PRB, corresponding first user
The PRB schematic diagram that subframe structure is corresponding understands, in the PRB that the subframe structure of first user is corresponding, with
4th row pilot tone RE is used for transmitting data at the RE (referred to as data RE) of identical time-frequency location, therefore,
In these data RE, the data of the first user of transmission may be to the DMRS in the 4th row pilot tone RE
Interfere, for avoiding this problem, then in corresponding to the subframe structure of first user PRB, with the 4th
The RE of row pilot tone RE correspondence time-frequency location carries out data punching, as it is shown in fig. 7, will first user
In the PRB that subframe structure is corresponding, the PRB acceptance of the bid black RE corresponding with the subframe structure of the second user is corresponding
The RE of identical time-frequency location punches, and does not send data symbol through the RE of data punching, and power is 0,
By this processing mode, the DMRS of the user of counterpart terminal type in pairing user's group can be eliminated and be subject to
The data interference of the user of corresponding trunk type.
The execution time of said process does not limit, it is preferable that can determine place relay transmission system in base station
Pairing user's group of system performs after the first user of corresponding trunk type.
Should be appreciated that the above-mentioned mode that RE carries out data punching only realizes the side of being preferable to carry out of the present invention
Formula, in actual application, in pairing user's group, the user of counterpart terminal type can still use defined in standard
4 row DMRS patterns are demodulated, with the transparent transmission pattern of compatible existing protocol, it is not necessary to extra letter
Order notice.
In the preferred embodiment that the present embodiment one provides, on the basis of performing Fig. 3 correspondence flow process, also may be used
To perform following processing procedure further:
Base station is configured to the DMRS port corresponding for R-PDCCH of first user distribution and divides with for the second user
The most orthogonal port of DMRS port corresponding for PDSCH joined or accurate orthogonal port.
Specifically, base station be configured to the DMRS port corresponding for R-PDCCH of first user distribution with for the
The most orthogonal port of DMRS port corresponding for PDSCH of two user's distribution or accurate orthogonal port, Ke Yitong
Cross following manner one or mode two:
Mode one
It is port 7 that base station is configured to the DMRS port corresponding for R-PDCCH of first user distribution, and disturbs
Code is designated 0；
The DMRS port corresponding for PDSCH being configured to first user or the second user distribution is port 7,
Scrambling code identification is 1.
Mode two
It is port 7 that base station is configured to the DMRS port corresponding for R-PDCCH of first user distribution, scrambler
It is designated 0；
The DMRS port corresponding for PDSCH being configured to first user or described second user's distribution is port
8 and scrambling code identification be 1 or 0.
In the present embodiment one, take the DMRS port of identical RE each other by configuring in this pairing user's group
Orthogonal port or accurate orthogonal port, it is possible to the DMRS's on the realization pairing identical running time-frequency resource of user is orthogonal
Property, it is to avoid interfere.
In the present embodiment one, base station needs the R-PDCCH of configuration relaying return link to be non-interlacing mode,
To realize and the space division multiplexing of pairing user.
Embodiment two
Correspondingly, corresponding with the method flow that above-described embodiment one provides, the embodiment of the present invention two additionally provides
In a kind of relay transmission system multi-user's multiple-input and multiple-output realize device, use this device, it is possible to reduce
The interference that on the PDSCH of pairing user, R-PDCCH is transmitted by the data of transmission.
Fig. 8 shows the realization of multi-user's multiple-input and multiple-output in the relay transmission system that the present embodiment two provides
The structural representation of device, as shown in Figure 8, this device specifically includes that
First user determines that unit the 801, the oneth PRB determines that unit the 802, the 2nd PRB determines unit 803
And configuration control unit 804；
Wherein:
First user determines unit 801, corresponding relaying in the pairing user's group determining relay transmission system
The first user of type；
Oneth PRB determines unit 802, for being defined as the first use that first user determines that unit 801 determines
The first Physical Resource Block PRB that the relaying Physical Downlink Control Channel R-PDCCH of family distribution takies；
2nd PRB determines unit 803, is used for being defined as in pairing user's group except first user determines unit
The Physical Downlink Shared Channel PDSCH of second user's distribution outside 801 first users determined takies
PRB determines the 2nd PRB of the PRB correspondence position that unit 802 determines with a PRB；
Configuration control unit 804, for controlling to determine, at the 2nd PRB, the 2nd PRB that unit 803 determines
The transmitting power of transmitting data reduces or configuration the 2nd PRB is silent status.
In the preferred embodiment that the present embodiment two provides, the configuration that Fig. 8 shown device includes controls single
Unit 804, specifically for determining that the minimum of the minimum transmission quality requirements of the transmission data meeting setting launches merit
Rate, and control the 2nd PRB transmitting data launch power at the model more than or equal to minimum emissive power
Enclose interior reduction.
In the preferred embodiment that the present embodiment two provides, the PRB that Fig. 8 shown device includes
Determine unit 802, specifically for when first user determines that the first user that unit is determined is at least two,
It is defined as the first of the corresponding diverse location that the R-PDCCH that at least two first user is respectively allocated takies
PRB；
Correspondingly, the 2nd PRB determines unit 803, specifically for determining in pairing user's group except at least two
The second user outside first user, however, it is determined that the second user gone out is one, it is determined that be that the second user divides
In the PRB that the PDSCH joined takies, respectively with the PRB being respectively allocated at least two first user
2nd PRB of correspondence position, however, it is determined that the second user gone out is at least two, then for each second user,
Be defined as in the PRB that takies of PDSCH of this second user distribution, respectively with at least two first user
2nd PRB of the PRB correspondence position being respectively allocated.
In the preferred embodiment that the present embodiment two provides, the configuration that Fig. 8 shown device includes controls single
Unit 804, is additionally operable to, for each PRB for described second user scheduling, determine the resource that this PRB includes
In unit R E, pilot tone RE that demodulated reference signal DMRS takies, and it is defined as first user distribution
In the RE included with the PRB of this PRB correspondence position, with pilot tone RE correspondence position and be used for transmitting number
According to RE, and control determine with pilot tone RE correspondence position and not passing on the RE transmit data
Transmission of data.
In the preferred embodiment that the present embodiment two provides, the configuration that Fig. 8 shown device includes controls single
Unit 804, be additionally operable to be configured to the DMRS port corresponding for R-PDCCH of first user distribution with for second
The most orthogonal port of DMRS port corresponding for PDSCH of user's distribution or accurate orthogonal port.
In the preferred embodiment that the present embodiment two provides, the configuration that Fig. 8 shown device includes controls single
Unit 804, is port specifically for being configured to the DMRS port corresponding for R-PDCCH of first user distribution
7 and scrambling code identification be 0, and be configured to first user or the second user distribution DMRS corresponding for PDSCH
Port-for-port 7 and scrambling code identification are 1；Or, the R-PDCCH being configured to first user distribution is corresponding
DMRS port is port 7 and scrambling code identification is 0, and is configured to first user or the second user distribution
DMRS port corresponding for PDSCH is port 8 and scrambling code identification is 1 or 0.
The said apparatus that this embodiment two provides may be located in base station, by applying this device in a base station,
The interference that on the PDSCH of pairing user, R-PDCCH is transmitted by the data of transmission can be reduced.
Should be appreciated that multi-user's multiple-input and multiple-output in above relay transmission system realizes the list that device includes
Unit only according to the logical partitioning that carries out of function that realizes of this device, in actual application, above-mentioned list can be carried out
The superposition of unit or fractionation.And multi-user's multiple-input and multiple-output in the relay transmission system that this embodiment two provides
How defeated realize multi-user in the relay transmission system that function that device realized and above-described embodiment one provide
Enter the implementation method flow process one_to_one corresponding of multi output, processed stream in more detail for what this device realized
Journey, is described in detail in said method embodiment, is not described in detail herein.
Further, in the relay transmission system in the present embodiment two multi-user's multiple-input and multiple-output realize device also
Having the functional module being capable of embodiment one scheme, here is omitted.
Although having been described for the preferred embodiment of the application, but those skilled in the art once knowing base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the application scope.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. the implementation method of multi-user's multiple-input and multiple-output in a relay transmission system, it is characterised in that
Including:
Base station determines the first user of corresponding trunk type in pairing user's group of place relay transmission system, and
It is defined as the first physics that the relaying Physical Downlink Control Channel R-PDCCH of described first user distribution takies
Resource Block PRB；
Be defined as described pairing user's group in except described first user in addition to second user distribute physics under
With the second of a described corresponding identical time-frequency location of PRB in the PRB that the shared channel PDSCH of row takies
PRB；
Control the transmitting power at described 2nd PRB transmitting data to reduce；
Control the transmitting power at described 2nd PRB transmitting data to reduce, including:
Determine the minimum emissive power of the minimum transmission quality requirements of the transmission data meeting setting；
Control the transmitting power at described 2nd PRB transmitting data and launch merit more than or equal to described minimum
Reduce in the range of rate；
When the described first user that base station is determined is at least two, it is defined as the distribution of described first user
The PRB that R-PDCCH takies, comprises determining that and is respectively allocated for described at least two first user
Oneth PRB of the corresponding diverse location that R-PDCCH takies；
It is defined as in the PRB that takies of PDSCH of described second user's distribution corresponding with a described PRB
2nd PRB of identical time-frequency location, comprises determining that in described pairing user's group except described at least two first
The second user outside user；If it is determined that described second user be one, it is determined that for described second use
In the PRB that takies of PDSCH of family distribution, respectively be respectively allocated for described at least two first user
2nd PRB of the corresponding identical time-frequency location of a described PRB；If it is determined that described second user be to
Few two, then for each described second user, it is defined as what the PDSCH of this second user distribution took
In PRB, corresponding identical with the described PRB being respectively allocated for described at least two first user respectively
2nd PRB of time-frequency location.
2. the method for claim 1, it is characterised in that also include:
Base station, for each PRB for described second user scheduling, determines the Resource Unit that this PRB includes
In RE, pilot tone RE that demodulated reference signal DMRS takies；
The RE that the PRB of corresponding with this PRB identical time-frequency location being defined as the distribution of described first user includes
In, identical time-frequency location corresponding with described pilot tone RE and for transmitting the RE of data, and control determining
Corresponding with described pilot tone RE identical time-frequency location and do not transmit data on the RE of data for transmitting.
3. the method described in claim 1, it is characterised in that also include:
Base station is configured to the demodulated reference signal DMRS end corresponding for R-PDCCH of described first user distribution
Mouthful orthogonal with corresponding for the PDSCH the most orthogonal port of DMRS port or the standard for described second user's distribution
Port.
4. method as claimed in claim 3, it is characterised in that base station is configured to described first user and divides
The DMRS port corresponding for R-PDCCH joined is corresponding with the PDSCH for described second user's distribution
The most orthogonal port of DMRS port or accurate orthogonal port, including:
Base station be configured to described first user distribution DMRS port corresponding for R-PDCCH be port 7 and
Scrambling code identification is 0, and the PDSCH being configured to described first user or described second user's distribution is corresponding
DMRS port is port 7 and scrambling code identification is 1；Or
Base station be configured to described first user distribution DMRS port corresponding for R-PDCCH be port 7 and
Scrambling code identification is 0, and the PDSCH being configured to described first user or described second user's distribution is corresponding
DMRS port is port 8 and scrambling code identification is 1 or 0.
5. in a relay transmission system multi-user's multiple-input and multiple-output realize device, it is characterised in that
Including:
First user determines unit, corresponding trunk type in the pairing user's group determining relay transmission system
First user；
Oneth PRB determines unit, for being defined as the first user that described first user determines that unit determines
The first Physical Resource Block PRB that the relaying Physical Downlink Control Channel R-PDCCH of distribution takies；
2nd PRB determines unit, is used for being defined as in described pairing user's group except described first user determines
The Physical Downlink Shared Channel PDSCH of second user's distribution outside the first user that unit determines takies
PRB determines the second of the corresponding identical time-frequency location of PRB that unit determines with a described PRB
PRB；
Configuration control unit, for controlling to determine that the 2nd PRB that unit determines uploads at described 2nd PRB
The transmitting power of transmission of data reduces；
Described configuration control unit, specifically for determining that the minimum transmission quality of the transmission data meeting setting is wanted
The minimum emissive power asked, and control the transmitting power at described 2nd PRB transmitting data and be more than
Reduce in the range of described minimum emissive power；
A described PRB determines unit, specifically for determining, at described first user, the institute that unit is determined
State first user when being at least two, be defined as what described at least two first user was respectively allocated
Oneth PRB of the corresponding diverse location that R-PDCCH takies；
Described 2nd PRB determines unit, specifically for determining in described pairing user's group except described at least two
The second user outside individual first user, however, it is determined that described second user gone out is one, it is determined that for described
In the PRB that the PDSCH of second user's distribution takies, distinguish with for described at least two first user respectively
2nd PRB of the corresponding identical time-frequency location of a described PRB of distribution, however, it is determined that described second gone out is used
Family is at least two, then for each described second user, be defined as the PDSCH of this second user distribution
In the PRB taken, respectively with the described oneth be respectively allocated for described at least two first user PRB couple
Answer the 2nd PRB of identical time-frequency location.
6. device as claimed in claim 5, it is characterised in that described configuration control unit, is additionally operable to
For each PRB for described second user scheduling, determine in the Resource Unit RE that this PRB includes, solve
Adjust pilot tone RE that takies of reference signal DMRS, and be defined as the distribution of described first user with this PRB pair
Answer in the RE that the PRB of identical time-frequency location includes, identical time-frequency location corresponding with described pilot tone RE and use
In transmission data RE, and control corresponding with the described pilot tone RE identical time-frequency location determined and for
Data are not transmitted on the RE of transmission data.
7. the device described in claim 5, it is characterised in that described configuration control unit, is additionally operable to join
Be set to described first user distribution demodulated reference signal DMRS port corresponding for R-PDCCH with for described
The most orthogonal port of DMRS port corresponding for PDSCH of second user's distribution or accurate orthogonal port.
8. device as claimed in claim 7, it is characterised in that described configuration control unit, specifically uses
In be configured to described first user distribution DMRS port corresponding for R-PDCCH be port 7 and scrambler mark
Knowledge is 0, and is configured to described first user or the DMRS corresponding for PDSCH of described second user's distribution
Port-for-port 7 and scrambling code identification are 1；Or, it is configured to R-PDCCH pair of the distribution of described first user
The DMRS port answered is port 7 and scrambling code identification is 0, and is configured to described first user or described second
The DMRS port corresponding for PDSCH of user's distribution is port 8 and scrambling code identification is 1 or 0.
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| US10278185B2 (en) | 2014-03-20 | 2019-04-30 | Huawei Device (Dongguan) Co., Ltd. | Signal sending method, user equipment, and base station |
| CN108632193B (en) * | 2017-03-24 | 2023-05-09 | 华为技术有限公司 | Resource indication method, network equipment and terminal equipment |
| CN110062434B (en) * | 2018-09-25 | 2021-05-14 | 中国信息通信研究院 | Relay communication method |
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| CN102026390A (en) * | 2010-12-31 | 2011-04-20 | 大唐移动通信设备有限公司 | Base station and resource allocation method for realizing interference coordination among cells |
| WO2011046413A2 (en) * | 2009-10-16 | 2011-04-21 | 엘지전자 주식회사 | Method and apparatus for transmitting multi-user mimo reference signal in wireless communication system for supporting relay |
| CN102186212A (en) * | 2011-04-08 | 2011-09-14 | 中兴通讯股份有限公司 | Intercell cooperation scheduling method, system and user equipment |
| CN102281571A (en) * | 2010-06-11 | 2011-12-14 | 电信科学技术研究院 | Power control method and equipment |
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| US9144037B2 (en) * | 2009-08-11 | 2015-09-22 | Qualcomm Incorporated | Interference mitigation by puncturing transmission of interfering cells |
| US8457079B2 (en) * | 2009-10-05 | 2013-06-04 | Motorola Mobility Llc | Method and apparatus for mitigating downlink control channel interference |
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| WO2011046413A2 (en) * | 2009-10-16 | 2011-04-21 | 엘지전자 주식회사 | Method and apparatus for transmitting multi-user mimo reference signal in wireless communication system for supporting relay |
| CN102281571A (en) * | 2010-06-11 | 2011-12-14 | 电信科学技术研究院 | Power control method and equipment |
| CN102026390A (en) * | 2010-12-31 | 2011-04-20 | 大唐移动通信设备有限公司 | Base station and resource allocation method for realizing interference coordination among cells |
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