CN103138869B - The sending method of channel state information reference signals, base station and relaying - Google Patents
The sending method of channel state information reference signals, base station and relaying Download PDFInfo
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Abstract
The invention discloses a kind of sending method of channel state information reference signals, base station and relaying, the method comprising the steps of: base station obtains to CSI-RS port number during terminal transmitting channel state information reference signals CSI-RS and CSI-RS configuration information; And each relaying CSI-RS port number of acquisition and CSI-RS configuration information informed to respectively under this base station, the running time-frequency resource that described CSI-RS port number and CSI-RS configuration information are used for running time-frequency resource shared when relay scheduling and this base station send CSI-RS mutually orthogonal sends CSI-RS.Adopt technical solution of the present invention, solve in prior art because CSI-RS disturb accuracy and the lower problem of entire system throughput performance of the system channel measurement caused.
Description
Technical field
The present invention relates to mobile communication technology field, particularly relate to a kind of sending method of channel state information reference signals, base station and relaying.
Background technology
Time-division Long Term Evolution (TD-LTE, Time-Division Long-Term Evolution) system provides than second generation mobile communication system and the higher transmission rate of 3-G (Generation Three mobile communication system) and better Consumer's Experience.What TD-LTE system was early stage arrange net launches for hot spot region, but along with the lasting lifting of data service customers quantity, user wishes to enjoy in the larger context the two-forty that TD-LTE system brings and experiences, this just requires that TD-LTE system can for user provides service under various scene, and these scenes comprise the dense city of communication environments complexity, remote suburb, indoor and cover at a high speed.
In order to tackle the wireless propagation environment of various complexity, solve the covering problem that real network is disposed, third generation partner program (3GPP, 3rd Generation Partnership Project) at the 10th version (R10, Release 10) senior Long Term Evolution (LTE-Advanced, Advanced LongTerm Evolution) system protocol in standardization has been carried out to relaying (Relay).At macro base station and user terminal (UE, User Equipment) between add relaying (Relay), the link that direct transfers between macro base station and UE is divided into two sections, as shown in Figure 1, be respectively: the wireless link between macro base station and relaying, be called return link (coffret is Un interface); Wireless link between relaying and UE, is called access link (coffret is Uu interface).Being gone on by centering, row is rational to be disposed, two sections of links after fractionation can have the propagation distance shorter than the link that direct transfers, shelter simultaneously in round also can reduce, and makes two sections of links after splitting all have transmittability than the better radio propagation conditions of the link that direct transfers and Geng Gao.
In the LTE-Advanced R10 stage, relaying needs the access supporting R10UE, R10UE is transmission mode 9 times, need to be based upon the channel state information reference signals (CSI-RS that LTE-Advanced R10 system newly defines, Channel State Information Reference Signal) measure, obtain channel condition information, and carry out channel quality instruction (CQI, Channel QualityIndicator) feedback.Wherein, CSI-RS periodically sends, its cycle is the multiple of 5ms, the function class of CSI-RS is similar to the public reference signal (CRS in LTE R8, Common ReferenceSignal), 1 CSI-RS port can be supported, 2 CSI-RS ports, 4 CSI-RS ports, 8 CSI-RS ports, in the subframe at CSI-RS place, support to take Physical Resource Block (PRB during 1 CSI-RS port, Physical Resource Block) in 2 Resource Unit (RE, ResourceElement), 32 groups of different CSI-RS patterns (Pattern) can be configured, support to take 2 RE in PRB during 2 CSI-RS ports, 32 groups of different CSI-RS Pattern can be configured, support to take 4 RE in PRB during 4 CSI-RS ports, 16 groups of different CSI-RSPattern can be configured, support to take 8 RE in PRB during 8 CSI-RS ports, 8 groups of different CSI-RS Pattern can be configured.The running time-frequency resource that each CSI-RS pattern takies in PRB is different.
In the communication system (can referred to as relay system) deploying relaying, some UE directly and trunking traffic, some UE then directly communicate with macro base station, wherein, UE that is direct and trunking traffic is called Relay UE, the UE directly communicated with macro base station is called host (Donor) UE, and this macro base station also can be called the host base station of this Donor UE.Relaying can send CSI-RS to Relay UE, macro base station also can send CSI-RS to Donor UE, if relaying and macro base station use identical running time-frequency resource to send CSI-RS to UE, Relay UE so under relaying will be subject to the strong jamming of the CSI-RS that macro base station sends to Donor UE when receiving CSI-RS, meanwhile, the Donor UE under macro base station also can be subject to the strong jamming of the CSI-RS that relaying sends to Relay UE when receiving CSI-RS.As shown in Figure 2, UE under macro base station is Donor UE, relaying under macro base station has relaying 1 and relaying 2, UE under relaying 1 is Relay UE1, UE under relaying 2 is Relay UE2, relaying 1 sends CSI-RS by the access link of relaying 1 → Relay UE1 to Relay UE1, relaying 2 sends CSI-RS by the access link of relaying 2 → Relay UE2 to Relay UE2, macro base station sends CSI-RS by the access link of macro base station → Donor UE to Donor UE, if macro base station and relaying 1 and relaying 2 use identical running time-frequency resource to send CSI-RS, when then Relay UE1 receives CSI-RS, the strong jamming of the CSI-RS of macro base station and relaying 2 transmission can be subject to, when Relay UE2 receives CSI-RS, the strong jamming of the CSI-RS of macro base station and relaying 1 transmission can be subject to, when Donor UE receives CSI-RS, the strong jamming of the CSI-RS of relaying 1 and relaying 2 transmission can be subject to.Especially for the scene of multiple relaying/multiple UE, CSI-RS disturbed condition will be more serious, thus reduce accuracy and the entire system throughput performance of system channel measurement.
Summary of the invention
The embodiment of the present invention provides a kind of sending method of channel state information reference signals, base station and relaying, in order to solve the accuracy of disturbing the system channel caused to measure due to CSI-RS in prior art and the lower problem of entire system throughput performance.
Embodiment of the present invention technical scheme is as follows:
A sending method for channel state information reference signals, the method comprising the steps of: base station obtains to CSI-RS port number during terminal transmitting channel state information reference signals CSI-RS and CSI-RS configuration information; And each relaying CSI-RS port number of acquisition and CSI-RS configuration information informed to respectively under this base station, the running time-frequency resource that described CSI-RS port number and CSI-RS configuration information are used for running time-frequency resource shared when relay scheduling and this base station send CSI-RS mutually orthogonal sends CSI-RS.
A kind of base station, comprising: port number and configuration information obtain unit, for obtaining described base station to CSI-RS port number during terminal transmitting channel state information reference signals CSI-RS and CSI-RS configuration information; Port number and configuration information transmitting element, inform to each relaying under this base station respectively for port number and configuration information being obtained CSI-RS port number that unit obtains and CSI-RS configuration information, the running time-frequency resource that described CSI-RS port number and CSI-RS configuration information are used for running time-frequency resource shared when relay scheduling and this base station send CSI-RS mutually orthogonal sends CSI-RS.
A sending method for channel state information reference signals, the method comprising the steps of: that base station that relay reception belongs to sends, this base station is to CSI-RS port number during terminal transmitting channel state information reference signals CSI-RS and CSI-RS configuration information; According to the CSI-RS port number received and CSI-RS configuration information, shared running time-frequency resource when determining that described base station sends CSI-RS; And dispatch the running time-frequency resource mutually orthogonal with the running time-frequency resource determined to send CSI-RS.
A kind of relaying, comprising: port number and configuration information receiving element, and that the base station belonged to for receiving described relaying sends, this base station is to CSI-RS port number during terminal transmitting channel state information reference signals CSI-RS and CSI-RS configuration information; Running time-frequency resource determining unit, for the CSI-RS port number that receives according to port number and configuration information receiving element and CSI-RS configuration information, running time-frequency resource shared when determining that described base station sends CSI-RS; Running time-frequency resource scheduling unit, for dispatching the mutually orthogonal running time-frequency resource of the running time-frequency resource determined with running time-frequency resource determining unit to send CSI-RS.
A sending method for channel state information reference signals, the method comprising the steps of: base station receives the channel state information reference signals CSI-RS port number that each relaying of belonging to this base station reports respectively; According to each CSI-RS port number received, each terminal connected for self and each relaying belonging to this base station distribute mutually orthogonal running time-frequency resource respectively; For each relaying belonging to this base station, respectively the running time-frequency resource for this relay distribution is informed to this relaying, described running time-frequency resource is used for this running time-frequency resource of relay scheduling and sends CSI-RS.
A kind of base station, comprising: port number receiving element, for receiving the channel state information reference signals CSI-RS port number that each relaying of belonging to described base station reports respectively; Time-frequency resource distributing unit, for each CSI-RS port number received according to port number receiving element, each terminal connected for self and each relaying belonging to this base station distribute mutually orthogonal running time-frequency resource respectively; Time-frequency resource distributing unit, for for each relaying belonging to described base station, is that the running time-frequency resource of this relay distribution informs to this relaying by running time-frequency resource notification unit respectively, and described running time-frequency resource is used for this running time-frequency resource of relay scheduling and sends CSI-RS.
A sending method for channel state information reference signals, the method comprising the steps of: CSI-RS port number during transmitting channel state information reference signals CSI-RS is reported belonged to base station by relaying; Obtain described base station notice, described base station is the running time-frequency resource of this relay distribution, wherein, described running time-frequency resource and described base station are that the running time-frequency resource of other relayings belonging to this base station and each terminal distribution be connected for this base station is mutually orthogonal; The running time-frequency resource that scheduling obtains to send CSI-RS to terminal.
A kind of relaying, comprising: port number reports unit, for CSI-RS port number during transmitting channel state information reference signals CSI-RS is reported belonged to base station; Running time-frequency resource obtains unit, for obtain described base station notice, described base station is the running time-frequency resource of this relay distribution, wherein, described running time-frequency resource and described base station are that the running time-frequency resource of other relayings belonging to this base station and each terminal distribution be connected for this base station is mutually orthogonal; Running time-frequency resource scheduling unit, the running time-frequency resource obtaining unit acquisition for dispatching running time-frequency resource to send CSI-RS to terminal.
In the embodiment of the present invention one technical scheme, first base station obtains to CSI-RS port number during UE transmission CSI-RS and CSI-RS configuration information, and each relaying CSI-RS port number of acquisition and CSI-RS configuration information informed to respectively under this base station, the CSI-RS port number that relaying sends according to base station and CSI-RS configuration information, shared running time-frequency resource when determining that base station sends CSI-RS, then the running time-frequency resource that scheduling is mutually orthogonal with the running time-frequency resource shared by base station sends CSI-RS, therefore, in the embodiment of the present invention one technical scheme, running time-frequency resource shared when shared running time-frequency resource and base station send CSI-RS to Donor UE when relaying sends CSI-RS to Relay UE is mutually orthogonal, therefore, it is possible to be subject to the strong jamming of the CSI-RS that base station sends when avoiding Relay UE to receive CSI-RS, the strong jamming of the CSI-RS that relaying sends is subject to when DonorUE also can be avoided to receive CSI-RS, therefore, it is possible to effectively reduce CSI-RS interference, improve the accuracy that system channel is measured, elevator system overall throughput performance, and promote the performance of CQI estimation,
In the embodiment of the present invention two technical scheme, CSI-RS port number when sending CSI-RS is reported belonged to base station by relaying, the CSI-RS port number that base station reports according to each relaying, the each UE connected for self and each relaying belonging to this base station distribute mutually orthogonal running time-frequency resource respectively, and for belonging to each relaying of this base station, respectively the running time-frequency resource for this relay distribution is informed to this relaying, subsequent relay is dispatched this running time-frequency resource and is come to send CSI-RS to UE, therefore, in the embodiment of the present invention two technical scheme, running time-frequency resource shared when shared running time-frequency resource and base station send CSI-RS to Donor UE when relaying sends CSI-RS to Relay UE is mutually orthogonal, and relaying is also mutually orthogonal to running time-frequency resource shared during Relay UE transmission CSI-RS to running time-frequency resource shared during Relay UE transmission CSI-RS and other relayings, therefore, it is possible to be subject to the strong jamming of the CSI-RS that base station sends when avoiding Relay UE to receive CSI-RS, the strong jamming of the CSI-RS that other relayings send is subject to when Relay UE also can be avoided to receive CSI-RS, the strong jamming of the CSI-RS that relaying sends is subject to when Donor UE can also be avoided to receive CSI-RS, therefore, it is possible to effectively reduce CSI-RS interference, improve the accuracy that system channel is measured, elevator system overall throughput performance, and promote the performance of CQI estimation.
Accompanying drawing explanation
Fig. 1 is in prior art, LTE-Advanced system architecture schematic diagram;
Fig. 2 is in prior art, and the CSI-RS in relay system disturbs schematic diagram;
Fig. 3 is in the embodiment of the present invention one, the sending method schematic flow sheet of CSI-RS;
Fig. 4 is in the embodiment of the present invention one, architecture of base station schematic diagram;
Fig. 5 is in the embodiment of the present invention one, relay structure schematic diagram;
Fig. 6 is in the embodiment of the present invention two, the sending method schematic flow sheet of CSI-RS;
Fig. 7 is in the embodiment of the present invention two, architecture of base station schematic diagram;
Fig. 8 is in the embodiment of the present invention two, relay structure schematic diagram.
Embodiment
Below in conjunction with each accompanying drawing, the main of embodiment of the present invention technical scheme is realized principle, embodiment and set forth in detail the beneficial effect that should be able to reach.
Embodiment one
As shown in Figure 3, be the sending method flow chart of CSI-RS in the embodiment of the present invention one, its concrete processing procedure is as follows:
Step 31, base station obtains to CSI-RS port number during UE transmission CSI-RS and CSI-RS configuration information.
Described base station and macro base station above-mentioned, the UE be directly connected with this base station is Donor UE, and this base station can be called the host base station of Donor UE.
When macro base station sends CSI-RS to Donor UE, CSI-RS port number and CSI-RS configuration information (such as 7bit indication information) can be distributed for Donor UE, wherein, macro base station can distribute identical CSI-RS port number for all Donor UE connecting this macro base station and distributes identical CSI-RS configuration information.Macro base station be Donor UE distribute CSI-RS port number and CSI-RS configuration information and CSI-RS pattern corresponding, according to CSI-RS port number and CSI-RS configuration information, corresponding CSI-RS pattern can be obtained.
According to above-mentioned CSI-RS pattern and the subframe sending CSI-RS, running time-frequency resource shared when can determine that macro base station sends CSI-RS to Donor UE, macro base station passes through high-level signaling, CSI-RS port number and CSI-RS are joined configuration information and is indicated to Donor UE, in prior art, subframe configuration information periodically can be indicated to each relaying under Donor UE and this macro base station by macro base station, subframe configuration information specifically comprises cycle and the sub-frame offset of the subframe sending CSI-RS, Donor UE is according to CSI-RS port number and CSI-RS configuration information, determine CSI-RSpattern, according to cycle and the sub-frame offset of the subframe comprised in subframe configuration information, determine that macro base station sends the subframe of CSI-RS, thus running time-frequency resource shared when can determine macro base station transmission CSI-RS, rear extended meeting is based on corresponding running time-frequency resource, receive the CSI-RS that macro base station sends.
Step 32, the CSI-RS port number of acquisition and CSI-RS configuration information are informed to respectively each relaying under this base station, wherein, the running time-frequency resource that described CSI-RS port number and CSI-RS configuration information are used for running time-frequency resource shared when relay scheduling and this base station send CSI-RS mutually orthogonal sends CSI-RS.
In the embodiment of the present invention one, macro base station can be, but not limited to by high-level signaling or relaying Physical Downlink Control Channel (R-PDCCH, Physical Downlink Control CHannel), CSI-RS port number and CSI-RS configuration information are informed to respectively each relaying under this macro base station.
Step 33, relaying according to the CSI-RS port number received and CSI-RS configuration information, shared running time-frequency resource when determining that this base station sends CSI-RS.
Relaying is according to the CSI-RS port number received and CSI-RS configuration information, determine the CSI-RS pattern that macro base station adopts when sending CSI-RS, the cycle of the subframe comprised in the subframe configuration information then according to the instruction of macro base station periodicity and sub-frame offset, determine that macro base station sends the subframe of CSI-RS, thus running time-frequency resource shared when can determine macro base station transmission CSI-RS.
Relaying can be, but not limited to by high-level signaling or R-PDCCH, receives CSI-RS port number and the CSI-RS configuration information of the macro base station transmission belonged to.
Step 34, the mutually orthogonal running time-frequency resource of relay scheduling and the running time-frequency resource determined is to send CSI-RS.
The embodiment of the present invention one proposes, and the running time-frequency resource that relaying can be, but not limited to realize dispatching the running time-frequency resource that takies with macro base station mutually orthogonal by following two kinds of modes sends CSI-RS, is specially:
First kind of way, the subframe that subframe shared when scheduling and described macro base station send CSI-RS is different sends CSI-RS, namely ensures orthogonal in time domain;
The second way, when macro base station sends CSI-RS in shared subframe, the RE that RE shared when scheduling and this macro base station send CSI-RS is different sends CSI-RS, namely ensures orthogonal on frequency domain.
Relaying passes through high-level signaling, CRS-RS port number corresponding for the running time-frequency resource orthogonal with the running time-frequency resource shared by macro base station and CRS-RS resource are joined configuration information and is indicated to Relay UE, in addition, also subframe configuration information corresponding for the running time-frequency resource orthogonal with the running time-frequency resource shared by macro base station is indicated to Relay UE, subframe configuration information specifically comprises cycle and the sub-frame offset that relaying sends the subframe of CSI-RS, Relay UE is according to CSI-RS port number and CSI-RS configuration information, determine CSI-RS pattern, determine that relaying sends the subframe of CSI-RS according to cycle of subframe and sub-frame offset, thus running time-frequency resource shared when can determine relaying transmission CSI-RS, rear extended meeting is based on corresponding running time-frequency resource, receive the CSI-RS that relaying sends.
The embodiment of the present invention one does not need UE or relaying to report any information to macro base station, realizes fairly simple, less to the change of standard.
From above-mentioned processing procedure, in the embodiment of the present invention one technical scheme, first base station obtains to CSI-RS port number during UE transmission CSI-RS and CSI-RS configuration information, and each relaying CSI-RS port number of acquisition and CSI-RS configuration information informed to respectively under this base station, the CSI-RS port number that relaying sends according to base station and CSI-RS configuration information, shared running time-frequency resource when determining that base station sends CSI-RS, then the running time-frequency resource that scheduling is mutually orthogonal with the running time-frequency resource shared by base station sends CSI-RS, therefore, in the embodiment of the present invention one technical scheme, running time-frequency resource shared when shared running time-frequency resource and base station send CSI-RS to Donor UE when relaying sends CSI-RS to Relay UE is mutually orthogonal, therefore, it is possible to be subject to the strong jamming of the CSI-RS that base station sends when avoiding Relay UE to receive CSI-RS, the strong jamming of the CSI-RS that relaying sends is subject to when Donor UE also can be avoided to receive CSI-RS, therefore, it is possible to effectively reduce CSI-RS interference, improve the accuracy that system channel is measured, elevator system overall throughput performance, and promote the performance of CQI estimation.
Corresponding with the sending method of above-mentioned CSI-RS, the embodiment of the present invention one also provides a kind of base station, and its structure as shown in Figure 4, comprising:
Port number and configuration information obtain unit 41, for obtaining described base station to CSI-RS port number during UE transmission CSI-RS and CSI-RS configuration information;
Port number and configuration information transmitting element 42, inform to each relaying under this base station respectively for port number and configuration information being obtained CSI-RS port number that unit 41 obtains and CSI-RS configuration information, the running time-frequency resource that described CSI-RS port number and CSI-RS configuration information are used for running time-frequency resource shared when relay scheduling and this base station send CSI-RS mutually orthogonal sends CSI-RS.
Preferably, port number and configuration information transmitting element 42, specifically for passing through high-level signaling or relaying Physical Downlink Control Channel, the CSI-RS port number obtain port number and configuration information acquisition unit 41 and CSI-RS configuration information inform to each relaying under this base station respectively.
Corresponding with the sending method of above-mentioned CSI-RS, the embodiment of the present invention one also provides a kind of relaying, and its structure as shown in Figure 5, comprising:
Port number and configuration information receiving element 51, the CSI-RS port number when base station belonged to for receiving described relaying sends, this base station sends CSI-RS to UE and CSI-RS configuration information;
Running time-frequency resource determining unit 52, for the CSI-RS port number that receives according to port number and configuration information receiving element 51 and CSI-RS configuration information, running time-frequency resource shared when determining that described base station sends CSI-RS;
Running time-frequency resource scheduling unit 53, for dispatching the mutually orthogonal running time-frequency resource of the running time-frequency resource determined with running time-frequency resource determining unit 52 to send CSI-RS.
Preferably, port number and configuration information receiving element 51, specifically for by high-level signaling or relaying Physical Downlink Control Channel, receive CSI-RS port number when that base station that described relaying belongs to sends, this base station sends CSI-RS to UE and CSI-RS configuration information.
Preferably, running time-frequency resource scheduling unit 53, the subframe that subframe shared when sending CSI-RS specifically for scheduling and described base station is different sends CSI-RS, or when described base station sends CSI-RS in shared subframe, the RE that Resource Unit RE shared when scheduling and described base station send CSI-RS is different sends CSI-RS.
Embodiment two
As shown in Figure 6, be the sending method flow chart of CSI-RS in the embodiment of the present invention two, its concrete processing procedure is as follows:
Step 61, CSI-RS port number when sending CSI-RS is reported belonged to base station by relaying.
Described base station and macro base station above-mentioned, the UE be directly connected with this base station is Donor UE, and this base station can be called the host base station of Donor UE.
Step 62, base station is according to each CSI-RS port number received, and each UE connected for self and each relaying belonging to this base station distribute mutually orthogonal running time-frequency resource respectively.
Step 63, the running time-frequency resource for this relay distribution, for each relaying belonging to this base station, is informed to this relaying by base station respectively, and described running time-frequency resource is used for this running time-frequency resource of relay scheduling and sends CSI-RS.
In the embodiment of the present invention two, macro base station can be, but not limited to, respectively by high-level signaling or R-PDCCH, the running time-frequency resource for this relay distribution be informed to this relaying.
Wherein, when running time-frequency resource is informed to relaying by macro base station, can be, but not limited to the CSI-RS port number corresponding to the running time-frequency resource of this relay distribution, CSI-RS configuration information and subframe configuration information to inform to this relaying.Subframe configuration information specifically comprises cycle and the sub-frame offset of the subframe sending CSI-RS.
Step 64, after relaying obtains the running time-frequency resource of base station notice, the running time-frequency resource that scheduling obtains to send CSI-RS to UE.
In the embodiment of the present invention two, when relaying obtains the running time-frequency resource of macro base station notice, first can receive CSI-RS port number, CSI-RS configuration information and subframe configuration information that macro base station sends, that this macro base station is this relay distribution running time-frequency resource is corresponding, relaying, according to the CSI-RS port number received, CSI-RS configuration information and subframe configuration information, determines that this macro base station is the running time-frequency resource of this relay distribution.Concrete: relaying is first according to the CSI-RS port number received and CSI-RS configuration information, determine corresponding CSI-RS pattern, and then according to cycle of the subframe comprised in the described subframe configuration information received and sub-frame offset, determine the subframe sending CSI-RS, thus shared running time-frequency resource when can determine that self sends CSI-RS to UE, the i.e. running time-frequency resource that distributes for self of macro base station.
Relaying passes through high-level signaling, the CRS-RS port number that the running time-frequency resource distributed by macro base station is corresponding and CRS-RS resource are joined configuration information and are indicated to Relay UE, in addition, also subframe configuration information is indicated to Relay UE, subframe configuration information specifically comprises cycle and the sub-frame offset of the subframe sending CSI-RS, Relay UE is according to CSI-RS port number and CSI-RS configuration information, determine CSI-RS pattern, the subframe sending CSI-RS is determined according to cycle of subframe and sub-frame offset, thus running time-frequency resource shared when can determine relaying transmission CSI-RS, rear extended meeting is based on corresponding running time-frequency resource, receive the CSI-RS that relaying sends.
The embodiment of the present invention two Donor UE be subject to when the Relay UE under relaying can not only be avoided to receive CSI-RS under the strong jamming of CSI-RS that base station sends and base station is subject to the strong jamming of the CSI-RS that relaying sends when receiving CSI-RS, be subject to the strong jamming of the CSI-RS that other relayings send when the Relay UE under relaying also can be avoided to receive CSI-RS.
From above-mentioned processing procedure, in the embodiment of the present invention two technical scheme, CSI-RS port number when sending CSI-RS is reported belonged to base station by relaying, the CSI-RS port number that base station reports according to each relaying, the each UE connected for self and each relaying belonging to this base station distribute mutually orthogonal running time-frequency resource respectively, and for belonging to each relaying of this base station, respectively the running time-frequency resource for this relay distribution is informed to this relaying, subsequent relay is dispatched this running time-frequency resource and is come to send CSI-RS to UE, therefore, in the embodiment of the present invention two technical scheme, running time-frequency resource shared when shared running time-frequency resource and base station send CSI-RS to Donor UE when relaying sends CSI-RS to Relay UE is mutually orthogonal, and relaying is also mutually orthogonal to running time-frequency resource shared during Relay UE transmission CSI-RS to running time-frequency resource shared during Relay UE transmission CSI-RS and other relayings, therefore, it is possible to be subject to the strong jamming of the CSI-RS that base station sends when avoiding RelayUE to receive CSI-RS, the strong jamming of the CSI-RS that other relayings send is subject to when Relay UE also can be avoided to receive CSI-RS, the strong jamming of the CSI-RS that relaying sends is subject to when DonorUE can also be avoided to receive CSI-RS, therefore, it is possible to effectively reduce CSI-RS interference, improve the accuracy that system channel is measured, elevator system overall throughput performance, and promote the performance of CQI estimation.
Corresponding with the sending method of above-mentioned CSI-RS, the embodiment of the present invention two also provides a kind of base station, and its structure as shown in Figure 7, comprising:
Port number receiving element 71, for receiving the CSI-RS port number that each relaying of belonging to described base station reports respectively;
Time-frequency resource distributing unit 72, for each CSI-RS port number received according to port number receiving element 71, each UE connected for self and each relaying belonging to this base station distribute mutually orthogonal running time-frequency resource respectively;
Running time-frequency resource notification unit 73, for for each relaying belonging to described base station, the running time-frequency resource being this relay distribution by time-frequency resource distributing unit 72 respectively informs to this relaying, and described running time-frequency resource is used for this running time-frequency resource of relay scheduling and sends CSI-RS.
Preferably, time-frequency resource distributing unit, specifically for for each relaying belonging to described base station, respectively by high-level signaling or R-PDCCH, is that the running time-frequency resource of this relay distribution informs to this relaying by running time-frequency resource notification unit 73.
Preferably, running time-frequency resource notification unit 73, specifically for for each relaying belonging to described base station, informs to this relaying by CSI-RS port number corresponding for the running time-frequency resource for this relay distribution, CSI-RS configuration information and subframe configuration information respectively.
Corresponding with the sending method of above-mentioned CSI-RS, the embodiment of the present invention two also provides a kind of relaying, and its structure as shown in Figure 8, comprising:
Port number reports unit 81, for CSI-RS port number when sending CSI-RS is reported belonged to base station;
Running time-frequency resource obtains unit 82, for obtain described base station notice, described base station is the running time-frequency resource of this relay distribution, wherein, described running time-frequency resource and described base station are that other relayings belonging to this base station and the running time-frequency resource that distributes each UE be connected for this base station are mutually orthogonal;
Running time-frequency resource scheduling unit 83, the running time-frequency resource obtaining unit 82 acquisition for dispatching running time-frequency resource to send CSI-RS to UE.
Preferably, running time-frequency resource obtains unit 82, specifically for by high-level signaling or R-PDCCH, obtain described base station notice, described base station is the running time-frequency resource of this relay distribution.
Preferably, running time-frequency resource obtains unit 82, specifically for receiving that described base station sends, that described base station is this relay distribution running time-frequency resource corresponding CSI-RS port number, CSI-RS configuration information and subframe configuration information, and according to the CSI-RS port number received, CSI-RS configuration information and subframe configuration information, determine that described base station is the running time-frequency resource of this relay distribution.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (22)
1. a sending method for channel state information reference signals, is characterized in that, comprising:
Base station obtains self to CSI-RS port number during terminal transmitting channel state information reference signals CSI-RS and CSI-RS configuration information; And
The CSI-RS port number of acquisition and CSI-RS configuration information are informed to respectively each relaying under this base station, the running time-frequency resource that described CSI-RS port number and CSI-RS configuration information are used for running time-frequency resource shared when relay scheduling and this base station send CSI-RS mutually orthogonal sends CSI-RS.
2. the method for claim 1, is characterized in that, the CSI-RS port number of acquisition and CSI-RS configuration information is informed to respectively each relaying under this base station, specifically comprises:
By high-level signaling or relaying Physical Downlink Control Channel, the CSI-RS port number of acquisition and CSI-RS configuration information are informed to respectively each relaying under this base station.
3. a base station, is characterized in that, comprising:
Port number and configuration information obtain unit, for obtaining described base station to CSI-RS port number during terminal transmitting channel state information reference signals CSI-RS and CSI-RS configuration information;
Port number and configuration information transmitting element, inform to each relaying under this base station respectively for port number and configuration information being obtained CSI-RS port number that unit obtains and CSI-RS configuration information, the running time-frequency resource that described CSI-RS port number and CSI-RS configuration information are used for running time-frequency resource shared when relay scheduling and this base station send CSI-RS mutually orthogonal sends CSI-RS.
4. base station as claimed in claim 3, it is characterized in that, port number and configuration information transmitting element, specifically for passing through high-level signaling or relaying Physical Downlink Control Channel, the CSI-RS port number obtain port number and configuration information acquisition unit and CSI-RS configuration information inform to each relaying under this base station respectively.
5. a sending method for channel state information reference signals, is characterized in that, comprising:
That base station that relay reception belongs to sends, this base station is to CSI-RS port number during terminal transmitting channel state information reference signals CSI-RS and CSI-RS configuration information;
According to the CSI-RS port number received and CSI-RS configuration information, shared running time-frequency resource when determining that described base station sends CSI-RS; And
Dispatch the running time-frequency resource mutually orthogonal with the running time-frequency resource determined to send CSI-RS.
6. method as claimed in claim 5, is characterized in that, the CSI-RS port number when base station that relay reception belongs to sends, this base station sends CSI-RS to terminal and CSI-RS configuration information, specifically comprise:
Relaying passes through high-level signaling or relaying Physical Downlink Control Channel, the CSI-RS port number when base station that reception belongs to sends, this base station sends CSI-RS to terminal and CSI-RS configuration information.
7. method as claimed in claim 5, is characterized in that, dispatch the running time-frequency resource mutually orthogonal with the running time-frequency resource determined to send CSI-RS, specifically comprise:
The subframe that subframe shared when scheduling and described base station send CSI-RS is different sends CSI-RS; Or
In the subframe shared when described base station sends CSI-RS, the RE that Resource Unit RE shared when scheduling and described base station send CSI-RS is different sends CSI-RS.
8. a relaying, is characterized in that, comprising:
Port number and configuration information receiving element, for receiving that base station that described relaying belongs to sends, this base station to CSI-RS port number during terminal transmitting channel state information reference signals CSI-RS and CSI-RS configuration information;
Running time-frequency resource determining unit, for the CSI-RS port number that receives according to port number and configuration information receiving element and CSI-RS configuration information, running time-frequency resource shared when determining that described base station sends CSI-RS;
Running time-frequency resource scheduling unit, for dispatching the mutually orthogonal running time-frequency resource of the running time-frequency resource determined with running time-frequency resource determining unit to send CSI-RS.
9. relaying as claimed in claim 8, it is characterized in that, port number and configuration information receiving element, specifically for by high-level signaling or relaying Physical Downlink Control Channel, receive CSI-RS port number when that base station that described relaying belongs to sends, this base station sends CSI-RS to terminal and CSI-RS configuration information.
10. relaying as claimed in claim 8, it is characterized in that, running time-frequency resource scheduling unit, the subframe that subframe shared when sending CSI-RS specifically for scheduling and described base station is different sends CSI-RS, or when described base station sends CSI-RS in shared subframe, the RE that Resource Unit RE shared when scheduling and described base station send CSI-RS is different sends CSI-RS.
The sending method of 11. 1 kinds of channel state information reference signals, is characterized in that, comprising:
Base station receives the channel state information reference signals CSI-RS port number that each relaying of belonging to this base station reports respectively;
According to each CSI-RS port number received, each terminal connected for self and each relaying belonging to this base station distribute mutually orthogonal running time-frequency resource respectively;
For each relaying belonging to this base station, respectively the running time-frequency resource for this relay distribution is informed to this relaying, described running time-frequency resource is used for this running time-frequency resource of relay scheduling and sends CSI-RS.
12. methods as claimed in claim 11, is characterized in that, for each relaying belonging to this base station, respectively the running time-frequency resource for this relay distribution is informed to this relaying, specifically comprise:
For each relaying belonging to this base station, respectively by high-level signaling or relaying Physical Downlink Control Channel, the running time-frequency resource for this relay distribution is informed to this relaying.
13. methods as claimed in claim 11, is characterized in that, for each relaying belonging to this base station, respectively the running time-frequency resource for this relay distribution is informed to this relaying, specifically comprise:
For each relaying belonging to this base station, respectively CSI-RS port number corresponding for the running time-frequency resource for this relay distribution, CSI-RS configuration information and subframe configuration information are informed to this relaying.
14. 1 kinds of base stations, is characterized in that, comprising:
Port number receiving element, for receiving the channel state information reference signals CSI-RS port number that each relaying of belonging to described base station reports respectively;
Time-frequency resource distributing unit, for each CSI-RS port number received according to port number receiving element, each terminal connected for self and each relaying belonging to this base station distribute mutually orthogonal running time-frequency resource respectively;
Time-frequency resource distributing unit, for for each relaying belonging to described base station, is that the running time-frequency resource of this relay distribution informs to this relaying by running time-frequency resource notification unit respectively, and described running time-frequency resource is used for this running time-frequency resource of relay scheduling and sends CSI-RS.
15. base stations as claimed in claim 14, it is characterized in that, running time-frequency resource notification unit, specifically for for each relaying belonging to described base station, respectively by high-level signaling or relaying Physical Downlink Control Channel, be that the running time-frequency resource of this relay distribution informs to this relaying by time-frequency resource distributing unit.
16. base stations as claimed in claim 14, it is characterized in that, running time-frequency resource notification unit, specifically for for each relaying belonging to described base station, respectively CSI-RS port number corresponding for the running time-frequency resource for this relay distribution, CSI-RS configuration information and subframe configuration information are informed to this relaying.
The sending method of 17. 1 kinds of channel state information reference signals, is characterized in that, comprising:
CSI-RS port number during transmitting channel state information reference signals CSI-RS is reported belonged to base station by relaying;
Obtain described base station notice, described base station is the running time-frequency resource of this relay distribution, wherein, described running time-frequency resource and described base station are that the running time-frequency resource of other relayings belonging to this base station and each terminal distribution be connected for this base station is mutually orthogonal;
The running time-frequency resource that scheduling obtains to send CSI-RS to terminal.
18. methods as claimed in claim 17, is characterized in that, obtain described base station notice, described base station is the running time-frequency resource of this relay distribution, specifically comprise:
By high-level signaling or relaying Physical Downlink Control Channel, obtain described base station notice, described base station is the running time-frequency resource of this relay distribution.
19. methods as claimed in claim 17, is characterized in that, obtain described base station notice, described base station is the running time-frequency resource of this relay distribution, specifically comprise:
Receive CSI-RS port number, CSI-RS configuration information and subframe configuration information that described base station sends, that described base station is this relay distribution running time-frequency resource is corresponding;
According to the CSI-RS port number received, CSI-RS configuration information and subframe configuration information, determine that described base station is the running time-frequency resource of this relay distribution.
20. 1 kinds of relayings, is characterized in that, comprising:
Port number reports unit, for CSI-RS port number during transmitting channel state information reference signals CSI-RS is reported belonged to base station;
Running time-frequency resource obtains unit, for obtain described base station notice, described base station is the running time-frequency resource of this relay distribution, wherein, described running time-frequency resource and described base station are that the running time-frequency resource of other relayings belonging to this base station and each terminal distribution be connected for this base station is mutually orthogonal;
Running time-frequency resource scheduling unit, the running time-frequency resource obtaining unit acquisition for dispatching running time-frequency resource to send CSI-RS to terminal.
21. relayings as claimed in claim 20, is characterized in that, running time-frequency resource obtains unit, specifically for by high-level signaling or relaying Physical Downlink Control Channel, obtain described base station notice, described base station is the running time-frequency resource of this relay distribution.
22. relayings as claimed in claim 20, it is characterized in that, running time-frequency resource obtains unit, specifically for receiving that described base station sends, that described base station is this relay distribution running time-frequency resource corresponding CSI-RS port number, CSI-RS configuration information and subframe configuration information, and according to the CSI-RS port number received, CSI-RS configuration information and subframe configuration information, determine that described base station is the running time-frequency resource of this relay distribution.
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| WO2016150525A1 (en) * | 2015-03-25 | 2016-09-29 | Sony Mobile Communications Inc. | Scheduling in cellular networks |
| CN107294689A (en) * | 2016-04-01 | 2017-10-24 | 中兴通讯股份有限公司 | Transmission method, the apparatus and system of pilot configuration information |
| CN108809595B (en) | 2017-05-05 | 2024-02-09 | 华为技术有限公司 | Reference signal notification method and device |
| CN118157727A (en) * | 2017-05-05 | 2024-06-07 | 华为技术有限公司 | Reference signal notification method and device |
| CN112422211B (en) | 2017-06-16 | 2024-03-01 | 华为技术有限公司 | Signal transmission method, related device and system |
| EP3639459A4 (en) * | 2017-06-16 | 2021-04-07 | Telefonaktiebolaget LM Ericsson (Publ) | Multi-resource uplink sounding and antenna subset transmission |
| CN109391338B (en) * | 2017-08-11 | 2021-05-04 | 华为技术有限公司 | Interference measurement method and device |
| CN110138526B (en) * | 2018-02-09 | 2021-04-09 | 成都华为技术有限公司 | Method, device and system for configuring reference signal |
| CN115734262A (en) * | 2021-08-27 | 2023-03-03 | 华为技术有限公司 | Method for measuring channel information, network equipment, relay equipment and terminal |
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