CN103546208B - The transmission method of a kind of aperiodic channel status information, equipment and system - Google Patents

The transmission method of a kind of aperiodic channel status information, equipment and system Download PDF

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Publication number
CN103546208B
CN103546208B CN201210237958.3A CN201210237958A CN103546208B CN 103546208 B CN103546208 B CN 103546208B CN 201210237958 A CN201210237958 A CN 201210237958A CN 103546208 B CN103546208 B CN 103546208B
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csi
csi process
terminal
processed
collection
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CN103546208A (en
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陈文洪
彭莹
高秋彬
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to PCT/CN2013/078860 priority patent/WO2014008833A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0076—Distributed coding, e.g. network coding, involving channel coding
    • H04L1/0077—Cooperative coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to wireless communication field, particularly to transmission method, equipment and the system of a kind of aperiodic channel status information, for solving the problem that feedback signaling overhead present in existing multi-point cooperative transmission is big.The embodiment of the present invention sends the method for aperiodic channel status information CSI and includes: the instruction information that terminal sends according to the base station received, it is that this terminal configures and notifies, to all CSI process collection of this terminal, to determine that this needs CSI process to be processed from base station；Each CSI process measurement to be processed is needed to obtain the CSI of correspondence according to this；And select at least one CSI as CSI reporting information from all CSI, and send this CSI reporting information to base station.The embodiment of the present invention decreases the feedback signaling overhead of CSI feedback aperiodic, and also ensure that the gain of CoMP.

Description

The transmission method of a kind of aperiodic channel status information, equipment and system
Technical field
The present invention relates to wireless communication field, particularly to the transmission side of a kind of aperiodic channel status information Method, equipment and system.
Background technology
Multi-point cooperative transmission (Coordinated Multipoint Transmission/Reception, CoMP) skill Art refers to the cooperation between the multiple transmission points separated on geographical position.In general, multiple transmission points are permissible It is the base station of different districts, it is also possible to be multiple RRH of same cell base station control.By multiple transmission Cooperation transmission between point, can effectively reduce the interference between different transmission point, improve user particularly The handling capacity of Cell Edge User.Descending multi-point cooperative transmission technical scheme is broadly divided into two classes: cooperative scheduling / wave beam forming (Cooperative Scheduling/Cooperative Beamforming, CS/CB) and associating Process (Joint Processing).
Cooperative scheduling is the coordination by transmitting time, frequency and space resources between point, it is to avoid or fall Interference between low different transmission point.The interference of minizone is restriction cell edge user terminal (User Equipment, UE) principal element of performance, therefore cooperative scheduling is by reducing the interference of minizone, can To improve the performance of cell edge UE.See Fig. 1, by the cooperative scheduling of three transmission points, it would be possible to Three UE that can interfere scheduled in mutually orthogonal resource, effectively avoids between transmission point Interference.Collaborative wave beam forming, by being scheduling the figuration direction of users multiple in cooperation cell, makes not Beam direction with community user is mutually orthogonal, thus reduces interference each other.It is similar to single community Multi-user's Multiinputoutput (Multi-User Multiple Input Multiple Output, MU-MIMO) passes Defeated, collaborative wave beam forming is mainly processed by the AF panel of transmitting terminal and realizes.Therefore, in order to suppress this The interference that other users are transmitted by the transmission of user, needs to obtain the down channel letter of cooperation cell in base station side Breath.
Combined Treatment scheme includes the switching of dynamic transmission point and combines transmission two ways.Dynamic transmission point switches In, base station can switch the transmission point sending signal to user dynamically, thus select the transmission of optimum every time Point transmission data.In order to realize transmitting dynamically a switching, base station need by feedback channel obtain multiple can Select the channel information of community, or obtain the channel information of optimal transmission point.Multiple biographies in associating delivery plan Defeated simultaneously to UE transmission data, to strengthen UE reception signal.Seeing Fig. 2, three transmission points are in phase Sending data to a UE in same resource, UE receives the signal of multiple community simultaneously.On the one hand, come Can promote, from the useful signal superposition of multiple communities, the signal quality that UE receives, on the other hand, reduce UE experienced interference, thus improve systematic function.This scheme requires that UE feeds back the channel of multiple communities Information, the most also wants the Relative channel information of minizone, thus ensure multiple community can combine be scheduling, Precoding and data send.
In long-term evolution upgrading (LTE-A) system, the information measurement reference letter that UE configures according to base station Number (Channel State Information-Reference Signal, CSI-RS) estimates base station and arrives UE's Channel condition information CSI, and calculate channel quality instruction (Channel Quality Indicator, CQI) Information, order instruction (Rank Indicator, RI) information and pre-coding matrix instruction (Precoding Matrix Indicator, PMI) information feeds back to base station；Downlink Control Information (Downlink Control can be passed through in base station Information, DCI) trigger UE carry out reporting of CSI aperiodic；UE is receiving what base station sent After triggering command, by Physical Uplink Shared Channel (Physical Uplink Shared CHannel, PUSCH) Feedback measures the CSI obtained.If the multiple descending carriers of cell configuration, base station also needs in triggering command The channel information of which carrier wave of middle indication feedback.
In order to support multi-point cooperative transmission, UE is required for each transmission point and measures CSI respectively, and this is main Rely on NZP (Non-zero-power) CSI-RS and interferometry resource (Interference of base station configuration Measurement Resource, IMR) realize.Wherein, NZP CSI-RS is used for measuring each transmission The descending channel information of point, thus estimate RI, PMI and CQI；Interferometry resource passes through ZP (Zero-power) CSI-RS configuration, for measure certain transmission point or certain transmission point set outside its He transmits a little interference information to maybe this transmission point set of this transmission point, thus estimates for CQI.
The CSI that usual each transmission point needs are measured is one or more, and each transmission point needs measurement CSI is a NZP CSI-RS corresponding according to this transmission point and one or more measurement disturbance information Interferometry resource determine.Each CSI is corresponding to a NZP CSI-RS and an interferometry money Source, the CSI (s) that the NZP CSI-RS measurement of same transmission point obtains has identical RI and PMI, and Different CQI.For multi-point cooperative transmission, measure CSI respectively owing to UE is required for each transmission point, And each transmission point need measure a CSI may be multiple, therefore, UE needs measurement to compare unicast More CSI, then UE needs to report CSI information more more than unicast by PUSCH；It addition, If UE is configured with multiple carrier wave, and the most all supports CoMP, then UE is at each carrier wave On be required for measuring the CSI that multiple transmission point is corresponding.
In sum, for multi-point cooperative transmission, owing to needing the CSI reporting each transmission point corresponding, hold Easily cause the problem that feedback signaling overhead is big, and the limited transmission capacity of PUSCH cannot carry more CSI。
Summary of the invention
Embodiments provide the transmission method of a kind of aperiodic channel status information, equipment and system, For solving the problem that feedback signaling overhead present in existing multi-point cooperative transmission is big.
Embodiments provide a kind of method sending aperiodic channel status information CSI, including:
The instruction information that terminal sends according to the base station received, is that described terminal configures and leads to from described base station Know in all CSI process collection of this terminal, determine that this needs CSI process to be processed；
Described terminal needs each CSI process measurement to be processed to obtain the CSI of correspondence according to this；
Described terminal from measure all CSI of obtaining select at least one CSI as CSI reporting information, And described CSI reporting information is sent to described base station；
Wherein, each described CSI process collection includes at least one CSI process, each described CSI Process at least includes the metrical information of the CSI of at least one needs measurement of a transmission point correspondence.
Embodiments providing a kind of method receiving aperiodic channel status information, its feature exists In, the method includes:
Base station notice terminal is all CSI process collection of its configuration, wraps in each described CSI process collection Include at least one CSI process, each described CSI process at least includes at least the one of a transmission point correspondence The metrical information of the individual CSI needing to measure；
Described base station to described terminal send instruction information, with instruction shown in terminal according to described instruction information from Described base station is that described terminal configures and notifies, in all CSI process collection of terminal, to determine this needs The CSI process processed, needs each CSI process measurement to be processed to obtain the CSI of correspondence according to this, and Select at least one CSI as CSI reporting information from all CSI；
Described base station receives the CSI of described terminal to report, and carries out descending scheduling and transmission according to described CSI.
Embodiments provide a kind of terminal for sending aperiodic channel status information CSI, including:
Determine module, for the instruction information sent according to the base station received, be described end from described base station End configuration also notifies, in all CSI process collection of this terminal, to determine that this needs CSI process to be processed；
Processing module, for needing each CSI process measurement to be processed to obtain the CSI of correspondence according to this；
Sending module, for select from all CSI at least one CSI as CSI reporting information, and to Described base station sends described CSI reporting information；
Wherein, each described CSI process collection includes at least one CSI process, each described CSI Process at least includes the metrical information of the CSI of at least one needs measurement of a transmission point correspondence.
Embodiments provide a kind of base station for receiving aperiodic channel status information, including:
Notification module, for notifying all CSI process collection that terminal is its configuration, each described CSI Process collection includes at least one CSI process, at least includes a transmission point in each described CSI process Corresponding at least one needs the metrical information of the CSI measured；
Instruction information sending module, for sending instruction information to described terminal, to indicate described terminal to carry out Aperiodic, CSI reported；
Receiver module, for receiving the CSI of described terminal to report, and carries out descending scheduling according to described CSI And transmission.
Embodiments provide the transmission system of a kind of aperiodic channel status information, including:
Base station, for notifying all CSI process collection that terminal is its configuration；Instruction is sent to described terminal Information, reports to indicate described terminal to carry out CSI aperiodic；And receive the CSI of described terminal to report, and Descending scheduling and transmission is carried out according to described CSI；
Terminal, for the instruction information sent according to the base station received, is that described terminal is joined from described base station In all CSI process collection put, determine that this needs CSI process to be processed；Need to process according to this Each CSI process measurement obtain correspondence CSI；And select at least one CSI to make from all CSI For CSI reporting information, and send described CSI reporting information to described base station；
Wherein, each described CSI process collection includes at least one CSI process, each described CSI Process at least includes the metrical information of the CSI of at least one needs measurement of a transmission point correspondence.
Embodiment of the present invention terminal is according to the instruction information of base station transmission received and owning of base station notice CSI process collection, determines that this needs CSI process to be processed；Each CSI to be processed is needed according to this Process measurement obtains the CSI of correspondence；Select from all CSI at least one CSI as reporting information, and This reporting information is sent to base station；Thus decrease the feedback signaling overhead of CSI feedback aperiodic, and also Ensure that the gain of CoMP.
Accompanying drawing explanation
Fig. 1 is the transmission point cooperative scheduling schematic diagram in background technology；
Fig. 2 is that the transmission point in background technology combines transmission schematic diagram；
Fig. 3 is the method flow diagram that the embodiment of the present invention sends CSI aperiodic；
Fig. 4 is the method flow diagram that the embodiment of the present invention receives CSI aperiodic；
Fig. 5 is the transmission method flow chart of the embodiment of the present invention the first aperiodic of CSI；
Fig. 6 is the transmission method flow chart of embodiment of the present invention the second CSI aperiodic；
Fig. 7 is the transmission method flow chart of the embodiment of the present invention the third aperiodic of CSI；
Fig. 8 is that the embodiment of the present invention is for sending the structural representation of the terminal of CSI aperiodic；
Fig. 9 is that the embodiment of the present invention is for receiving the structural representation of the base station of CSI aperiodic；
Figure 10 is the structural representation of the transmission system of embodiment of the present invention CSI aperiodic.
Detailed description of the invention
In the embodiment of the present invention, in order to obtain the channel condition information of multiple transmission point, base station needs for terminal Configure at least one CSI process collection, and by all CSI that notice terminal is its configuration such as high-level signaling Process collection, wherein, CSI process collection comprises at least one CSI process, in each CSI process at least Comprise the metrical information of the CSI that at least one needs corresponding to transmission point are measured；
It should be noted that the metrical information of each CSI is to be measured CSI by base station by terminal configured and lead to Knowing this terminal, terminal, according to the metrical information of each CSI needing and measuring, obtains the CSI of correspondence, often The metrical information of individual CSI can be relevant to a NZP CSI-RS and an interferometry resource, wherein, Interferometry resource is configured by ZP CSI-RS；
CSI process in one CSI process collection can be for same transmission point (now this CSI process NZP CSI-RS in set is identical), it is also possible to for different transmission point (now this CSI process collection Include multiple different NZP CSI-RS).
Wherein, notice terminal in base station is that each CSI process collection of its configuration includes following three kinds of modes:
First kind of way, base station are sent as all CSI process collection of its configuration to terminal；
The second way, base station are sent as each CSI in each CSI process collection of its configuration to terminal The index that process is corresponding；
Accordingly, the terminal each CSI process pair in receiving each CSI process collection that base station sends After the index answered, determine each CSI process in each CSI process collection according to this index；
Before base station uses the manner notice terminal all CSI process collection, need first by all CSI processes And index corresponding to each CSI process notifies to terminal；
Accordingly, base station can be sent by terminal all CSI processes and the index of correspondence thereof are stored in local number According to storehouse；After the index that then terminal CSI process in receiving each CSI process collection that base station sends is corresponding, From local data base, the CSI process of correspondence is searched according to this index, so that it is determined that each CSI process collection In the CSI process that comprises.
The third mode, base station are sent as, to terminal, the bit sequence that its each CSI process collection configured is corresponding Row, wherein, each bit in this bit sequence represents a CSI process, if certain bit value is 1, Then represent that this CSI process collection includes the CSI process that this bit is corresponding, if certain bit value is 0, Represent and this CSI process collection does not include the CSI process that this bit is corresponding；
Accordingly, terminal is receiving the bit sequence that each CSI process collection is corresponding, according to this bit sequence Determine the CSI process comprised in this CSI process collection；
Before base station uses the manner notice terminal all CSI process collection, need first by all CSI processes And index corresponding to each CSI process notifies to terminal；
Accordingly, base station can be sent by terminal all CSI processes and the index of correspondence thereof are stored in local number According to storehouse；Then terminal is after the bit sequence that each CSI process collection receiving base station transmission is corresponding, according to this Bit sequence determines the index that the CSI process comprised in this set is corresponding, and according to this index from local data Storehouse is searched the CSI process of correspondence, so that it is determined that the CSI process comprised in each CSI process collection.
Assume that base station sends 5 CSI processes and index thereof to terminal, terminal by these 5 CSI processes and Index is stored in local data base；If the CSI process collection 1 that base station is the configuration of this terminal comprises CSI Process 1 and CSI process 3, then base station can be by sending 5 ratios of CSI process collection 1 correspondence to terminal Special sequence (such as 10100, wherein, first bit identification CSI process 1 in this 5 Bit data, the Two bit identification CSI processes 2, the like, " 1 " represents that this CSI process collection includes this bit Corresponding CSI process, " 0 " represent this CSI process collection does not include the CSI process that this bit is corresponding)；
Accordingly, terminal is after receiving the bit sequence that base station sends, it may be determined that this CSI process collection In index corresponding to the CSI process that comprises, search corresponding from local data base according to the index determined CSI process, so that it is determined that the CSI process comprised in each CSI process collection.
When configuring CSI process collection, can be for transmission point one CSI process collection of configuration, also Can be for difference transmission point one CSI process collection of configuration；If terminal have activated multiple carrier wave, and this is eventually Hold and support multi-point cooperative transmission on the most exciting carrier wave, then base station is that terminal configures CSI process During set, can be that all carrier waves of the support multi-point cooperative transmission of this terminal are respectively configured CSI process collection； Base station can also be respectively configured CSI process collection for different sub-frame set, wherein, in each sub-frame set Including at least one subframe, and each sub-frame set at least one CSI process collection corresponding, sub-frame set can Configure for terminal being base station, it is also possible to be that both sides arrange.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
Seeing Fig. 3, the embodiment of the present invention sends the method for aperiodic channel status information, comprises the following steps:
The instruction information that step 31, terminal send according to the base station received, is that this terminal configures also from base station Notify, in all CSI process collection of this terminal, to determine that this needs CSI process to be processed；
Wherein, each CSI process collection comprises at least one CSI process, in each CSI process at least At least one including a transmission point correspondence needs the metrical information of the CSI measured；
Step 32, terminal need each CSI process measurement to be processed to obtain the CSI of correspondence according to this；
Step 33, terminal from measure all CSI of obtaining select at least one CSI as reporting information, And this reporting information is sent to base station.
Preferably, reporting information also includes that every CSI process corresponding for CSI needs CSI to be processed at this Index information in process, or every CSI process corresponding for CSI needs to process on the carrier wave at its place All CSI processes in index information.
In force, the instruction information that the base station that in step 31, terminal receives sends includes:
First selection strategy, for indicating terminal according to the instruction content of instruction information, determines that this needs place The CSI process of reason；
Second selection strategy, for indicate terminal according to the CSI process collection made an appointment or with make an appointment CSI process collection corresponding to carrier set, determine that this needs CSI process to be processed, wherein, carrier wave Set includes at least one carrier wave that terminal configures, and each carrier wave correspondence at least in each carrier set Individual CSI process collection.
Concrete, this instruction information can take 1 bit or 2 bits or 3 bits.It is exemplified below:
For the first selection strategy, base station can use the instruction information of 2 bits or 3 bits to indicate terminal Determine that this needs CSI process to be processed according to the first selection strategy；
Wherein, the instruction content of instruction information that base station sends includes but not limited to one of the following:
CSI process collection index, transmission point, the NZP CSI-RS of setting, the interferometry of setting set Resource and carrier set index.
It is divided into following three kinds of situations to illustrate the attribute information that instruction information indicates below.
The first situation: instruction information includes that the instruction content of this first selection strategy and instruction information is CSI Process collection indexes；
Assume that base station is that terminal is configured with three CSI process collection, respectively CSI process collection 1, CSI Process collection 2 and CSI process collection 3, base station uses the instruction information instruction CSI process collection of 2 bits Index, as shown in table 2:
CSI triggers signaling Instruction content
00 Do not trigger CSI aperiodic to report
01 CSI aperiodic of the CSI process collection 1 triggering high level configuration reports
10 CSI aperiodic of the CSI process collection 2 triggering high level configuration reports
11 CSI aperiodic of the CSI process collection 3 triggering high level configuration reports
Table 2
Certainly, base station can also be by sending the instruction information of 3 bits to indicate different CSI process collection Index, will not enumerate herein.
If the instruction content of instruction information instruction is CSI process collection index, in step 31, terminal determines this Secondary need CSI to be processed process, including:
Terminal determines the CSI corresponding with CSI process collection index from the CSI process collection being pre-configured with All CSI processes corresponding in process collection, and the CSI process collection that will determine are that this need to be to be processed CSI process.
The second situation: instruction information includes that the instruction content of this first selection strategy and instruction information is for setting Transmission point or NZP CSI-RS or interferometry resource；
Assume that base station is that terminal is configured with two CSI process collection, respectively CSI process collection 1 and CSI Process collection 2, illustrates as a example by indicating attribute information that information indicates for the NZP CSI-RS that sets, Base station uses the instruction information instruction CSI process collection index of 2 bits, as shown in table 3:
CSI triggers signaling Instruction content
00 Do not trigger CSI aperiodic to report
01 Triggering carries out CSI aperiodic to the NZP CSI-RS of agreement and reports
10 CSI aperiodic of the CSI process collection 1 triggering high level configuration reports
11 CSI aperiodic of the CSI process collection 2 triggering high level configuration reports
Table 3
Wherein, if the instruction content of instruction information is the transmission point set, in the instruction of instruction information " 01 " Appearance can be " triggering carries out CSI aperiodic to the transmission point of agreement and reports ", and i.e. this needs CSI to be processed Process is all CSI processes that the transmission point set is corresponding；If the instruction content of instruction information is the dry of setting Disturbing measurement resource, the instruction content of instruction information " 01 " can be " to trigger the interferometry resource to agreement Carry out CSI aperiodic to report ", i.e. this needs the interferometry resource that CSI process to be processed is and sets Corresponding all CSI processes.
Certainly, the instruction content of the instruction information of 2 bits of transmission can also be other, and such as " 01 " refers to Showing that this needs CSI process to be processed to be all CSI processes that the transmission point set is corresponding, " 10 " indicate This needs CSI process to be processed to be and corresponding for NZP CSI-RS all CSI processes of setting, " 11 " This needs CSI process to be processed be all CSIs corresponding with the interferometry resource set to indicate terminal Process；Will not enumerate herein.
Certainly, base station can also use the first selection plan by the instruction information sending 3 bits with instruction terminal Slightly determine that this needs CSI process to be processed, will not enumerate herein.
If the instruction content of instruction information is the transmission point or NZP CSI-RS or interferometry resource set, Then in step 31, terminal determines that this needs CSI process to be processed, including:
Terminal determine from the CSI process collection being pre-configured with set transmission point or NZP CSI-RS or All CSI processes corresponding to interferometry resource need CSI process to be processed as this.
The third situation: if terminal is configured with multiple carrier wave, and the most all support that multi-point cooperative passes Defeated, it indicates that information includes that the instruction content of this first selection strategy and instruction information is carrier set index；
Assuming that terminal is configured with three carrier waves, i.e. carrier wave 1, carrier wave 2 and carrier wave 3, base station is terminal configuration Two for the carrier set that aperiodic, CSI reported, i.e. carrier set 1 (including carrier wave 1 and carrier wave 2) With carrier set 2 (carrier wave 3), and base station is that each carrier wave in each carrier set is respectively configured at least One CSI process collection, base station uses the instruction information indication carrier wave index of set of 2 bits, such as table 4 institute Show:
CSI triggers signaling Instruction content
00 Do not trigger CSI aperiodic to report
01 CSI aperiodic triggering current carrier reports
10 CSI aperiodic of the carrier set 1 triggering high level configuration reports
11 CSI aperiodic of the carrier set 2 triggering high level configuration reports
Table 4
Certainly, base station can also be indexed with the carrier set that instruction is different by the instruction information sending 3 bits, Will not enumerate herein.
For the second selection strategy, base station can use the instruction information of 1 bit；Such as, base station is to terminal Transmission " 0 " instruction terminal does not carry out CSI aperiodic and reports；Send " 1 " instruction terminal according to a preconcerted arrangement CSI process collection or carrier set carry out CSI aperiodic and report.
Accordingly, terminal CSI process collection according to a preconcerted arrangement determines that this needs CSI process to be processed to include:
All CSI processes corresponding in the CSI process collection of agreement are needed to be processed as this by terminal CSI process.
Accordingly, terminal carrier set according to a preconcerted arrangement determines that this needs CSI process to be processed to include:
Terminal is by all CSI corresponding in CSI process collection corresponding for each carrier wave in the carrier set of agreement Process needs CSI process to be processed as this.
Further, sending before instruction information to terminal in base station, base station needs to configure for this terminal All CSI process collection are notified to terminal by high-level signaling.
In force, in step 33, terminal selects at least one CSI according to following manner from all CSI As reporting information:
Mode one, terminal need different interferometry resources corresponding to CSI process to be processed according to this, Select at least one interferometry resource corresponding from measuring a plurality of CSI obtained according to the selection strategy preset At least one CSI as CSI reporting information；
Concrete, terminal can be carried out point measuring a plurality of CSI obtained according to different interferometry resources Group, is divided into one group by CSI identical for corresponding interferometry resource；And according to default selection strategy from many Group CSI select one group of CSI as reporting information.
Mode two, terminal need different NZP CSI-RS corresponding to CSI process to be processed according to this, Select at least one NZP CSI-RS corresponding from measuring a plurality of CSI obtained according to the selection strategy preset At least one CSI as CSI reporting information；
Concrete, terminal can be carried out point measuring a plurality of CSI obtained according to different NZP CSI-RS Group, is divided into one group by corresponding CSI identical for NZP CSI-RS；And according to default selection strategy from many Group CSI select one group of CSI as reporting information.
Mode three, terminal need transmission mechanism corresponding to CSI process to be processed according to this, obtain from measurement A plurality of CSI according to preset selection strategy select at least one CSI that at least one transmission mechanism is corresponding As CSI reporting information；
Concrete, terminal can be grouped, by correspondence measuring the multiple CSI obtained according to transmission mechanism The identical CSI of transmission mechanism be divided into one group；And from many group CSI, select one according to default selection strategy CSI is as CSI reporting information for group；Wherein, the transmission mechanism that each CSI process is corresponding is to be notified by base station To terminal, transmission mechanism includes but not limited to following one or more: the switching transmission of dynamic transmission point, 2 joint transmission, 3 joint transmission, unicast, 2 CS/CB and 3 CS/CB.
Mode four, terminal need carrier wave corresponding to CSI process to be processed according to this, survey from all carrier waves The a plurality of CSI measured selects at least the one of at least one carrier wave correspondence respectively according to the selection strategy preset Bar CSI is as CSI reporting information；
Mode five, terminal select at least according to the selection strategy preset from a plurality of CSI that all measurements obtain Article one, CSI is as CSI reporting information.
Preferably, the selection strategy preset includes one of following or combination:
Mode A, information capacity maximum principle；
Concrete, select one group of CSI of information capacity maximum as CSI reporting information from many group CSI； Or select the CSI of information capacity maximum as CSI reporting information from all CSI.
Mode B, letter are dried maximum more former than (Signal-to-Interference and Noise Ratio, SINR) Then；
Concrete, terminal selects one group of maximum for SINR CSI as CSI reporting information from many group CSI； Or select CSI maximum for SINR as CSI reporting information from all CSI；
Mode C, higher than set information capacity thresholding principle；
Concrete, terminal selects a group more than the information capacity thresholding set of information capacity from many group CSI CSI is as CSI reporting information；Or select more than the information capacity thresholding set from all CSI CSI is as CSI reporting information；
Mode D, higher than the principle of SINR thresholding set；
Concrete, terminal selects the SINR one group of CSI more than the SINR thresholding set from many group CSI As CSI reporting information；Or from all CSI, select the CSI conduct more than the SINR thresholding set CSI reporting information.
If it should be noted that terminal is configured with multiple carrier wave, and the most all supporting multiple CSI process, does not support due to system to select across carrier wave, and therefore UE is required on each carrier wave measuring To CSI select at least one CSI as reporting information corresponding to this carrier wave respectively, and report successively.
If entered it should be noted that terminal receives the CSI that the sub-frame set that base station is different is respectively configured Cheng Jihe, then terminal should carry out CSI measurement respectively based on the CSI process collection that different sub-frame set are corresponding, And measure from the most each sub-frame set in the CSI obtained and select at least one CSI as this sub-frame set pair The reporting information answered, and report successively；Wherein, sub-frame set is pre-configured with by base station, each Sub-frame set includes at least one subframe.
Seeing Fig. 4, the embodiment of the present invention receives the method for CSI aperiodic, comprises the following steps:
Step 41, base station notice terminal are all CSI process collection of its configuration, each CSI process sets Conjunction comprises at least one CSI process, each CSI process at least including, a transmission point is corresponding at least One metrical information needing the CSI measured；
Preferably, if terminal is configured with multiple carrier wave, and this terminal the most all supports multi-point cooperative Transmission；Then base station is that each carrier wave of terminal is respectively configured at least one CSI process collection；Or base station is eventually The partial carrier wave of end is respectively configured at least one CSI process collection, such as the main carrier configuration CSI of only terminal Process collection.
In force, in step 41 base station notice terminal be its configuration all CSI process collection include with Lower three kinds of modes:
Base station is sent as all CSI process collection of its configuration to terminal；Or
Index corresponding to CSI process that base station is sent as in each CSI process collection of its configuration to terminal, So that terminal determines the CSI process of correspondence according to the index that each CSI process is corresponding；Or
Base station is sent as, to terminal, the bit sequence that its each CSI process collection configured is corresponding, so that terminal The CSI process that the CSI process collection of correspondence comprises is determined according to this bit sequence.
Step 42, base station send instruction information to terminal, report to indicate terminal to carry out CSI aperiodic；
Wherein, the instruction information that base station sends to terminal includes:
First selection strategy, for indicating terminal according to the instruction content of instruction information, determines that this needs place The CSI process of reason；Or
Second selection strategy, for indicating terminal to select to make an appointment in all CSI process collection of notice CSI process collection or the CSI process collection corresponding with the carrier set made an appointment, determine this needs The CSI process processed, wherein, carrier set includes the carrier wave that at least one terminal configures, and each carrier wave Each carrier wave in set at least one CSI process collection corresponding.
Wherein, the instruction content of instruction information can be CSI process collection index, the transmission point of setting, set Fixed NZP CSI-RS, the interferometry resource of setting or carrier set index；
Terminal, after receiving the instruction information that base station sends, is that it configures and leads to according to instruction information from base station In all CSI process collection known, determine that this needs CSI process to be processed, need to process according to this Each CSI process measurement obtain the CSI of correspondence, and from all CSI, select at least one CSI conduct CSI reporting information.
Step 43, base station carry out descending scheduling and transmission according to the CSI of terminal to report.
It should be noted that base station can also carry out aperiodic by downlink signaling notice terminal in step 41 The reporting schemes that CSI reports, this reporting schemes includes: notice terminal to report CSI all aperiodics, or logical Know terminal to report part CSI aperiodic.
If the reporting schemes of base station notice terminal is for reporting part CSI aperiodic, then can be indicated by step 42 The CSI that these needs of terminal report.
Base station is as follows with the mutual implementation of end side:
First, base station is that each terminal configures at least one CSI process collection by high-level signaling；
Accordingly, terminal receives at least one CSI process collection of base station instruction；
Then, base station is by aperiodic in DCI, CSI triggered signaling transmission instruction information, to indicate terminal to enter Row CSI aperiodic reports；
Accordingly, terminal receives the instruction information that base station sends, and determines that this needs place according to instruction information Reason CSI process, based on a determination that CSI process measure；All CSI that terminal obtains from measurement Middle selection at least one CSI is as reporting information, and reports；Wherein, this reporting information also includes often The CSI process corresponding for bar CSI index information in all CSI processes determined；
Finally, base station, according to the reporting information of terminal, determines the down channel letter of corresponding transmission point and/or carrier wave Breath, thus carry out corresponding descending scheduling and transmission.
In mutual implementation base station and terminal implement may refer to above-mentioned respectively to base station and end The method of side describes, and repeats no more here.
Below in conjunction with three below specific embodiment, the transmission method of embodiment of the present invention CSI aperiodic is carried out Describe in detail.
Embodiment one: see Fig. 5, the transmission method of the present embodiment CSI aperiodic comprises the following steps:
Step 51, base station are that UE configures three CSI that CSI reports for aperiodic by high-level signaling Process collection, wherein, three CSI process collection correspondence respectively: the switching of dynamic transmission point, 2 combine biography Defeated and three kinds of transmission mechanisms of 3 joint transmission；
Concrete, the CSI process that UE be there is a need to measure is prenoticed in base station, and in each CSI process Set use bitmap mode indicate the CSI process comprised in this CSI process collection.
Step 52, base station trigger signaling instruction UE by 2 bit CSI aperiodic in DCI and carry out non- Cycle, CSI reported, and by this 2 Bit data corresponding 3 triggering states, indicated this aperiodic CSI reports the CSI process collection of required measurement index in three the CSI process collection being pre-configured with； Wherein, the instruction content of 2 Bit datas is as shown in table 2.
Step 53, UE receive three CSI process collection that base station is its configuration；
Step 54, UE receive the 2 bit CSI aperiodic triggering signalings that base station sends, and according to this triggering The CSI process collection index of signaling instruction, determines this CSI process sets from above three CSI process collection Closing the CSI process collection that index is corresponding, in the CSI process collection that will determine, all CSI processes are as this Need CSI process to be processed；And respectively every CSI process corresponding in the CSI process collection determined is entered Row is measured, and obtains the CSI that each CSI process is corresponding；
Such as, if 2 Bit datas that UE receives are " 01 ", then corresponding instruction content is for triggering height CSI aperiodic of the CSI process collection 1 of layer configuration reports, i.e. CSI process collection index is 1 by UE CSI process collection in corresponding all CSI processes need CSI process to be processed as this, and respectively Every CSI process in CSI process collection 1 is measured, obtains every CSI corresponding to CSI process.
Step 55, UE are from measuring all CSI obtained, according to the interferometry used during measuring Resource is grouped measuring the CSI obtained, and CSI corresponding for same interferometry resource is divided into one group； And one group of CSI that in the many groups CSI determined, information capacity is maximum is as reporting information；
Such as, if CSI process collection 1 comprises the NZP CSI-RS and the most different of 3 transmission points (wherein, each interferometry resource is for measuring the transmission that this interferometry resource is corresponding for interferometry resource The interference that this transmission is put by other transmission points outside Dian), UE is respectively according to every couple of NZP CSI-RS and interference Measure resource, measure and obtain 3 CSI；3 CSI that this measurement is obtained by UE are divided into 3 groups, and compare The information capacity size corresponding for CSI compared with these 3 groups, using one group of maximum for information capacity CSI as reporting information, And the CSI process corresponding for every CSI in the reporting information that determines and this reporting information is at these 3 CSI Index information in process reports base station.
The index information of the CSI process of step 56, the CSI that base station reports according to UE and its correspondence, obtains Take the descending channel information of this CSI correspondence transmission point, thus carry out corresponding descending scheduling and transmission.
Implement two: seeing Fig. 6, the transmission method of the present embodiment CSI aperiodic comprises the following steps:
Step 61, base station are that UE configures two CSI that CSI reports for aperiodic by high-level signaling Process collection, wherein, comprises the CSI process that different transmission points is corresponding respectively in two CSI process collection, The NZP CSI-RS difference that the most each CSI process collection is corresponding；
Concrete, the CSI process that UE be there is a need to process is prenoticed in base station, and in each CSI process Set use bitmap mode indicate the CSI process comprised in each CSI process collection.
Step 62, base station trigger signaling triggering UE by 2 bit CSI aperiodic in DCI and carry out non- Cycle, CSI reported, and by triggering three triggering states in bit, indicated respectively that this needs to be processed The CSI process collection index that CSI process is corresponding, and NZP CSI-RS couple of instruction UE employing agreement The CSI process answered reports.These 2 bit CSI aperiodic trigger instruction content such as table 3 institute of signaling Show.
Step 63, UE receive two CSI process collection that base station is its configuration；
After step 64, UE receive 2 bit CSI aperiodic triggering signalings of base station, non-according to this 2 bit Cycle CSI triggers the information of the CSI process collection of signaling instruction, determines that this needs CSI process to be processed； Respectively the CSI process determined is measured；
Such as, this 2 bit CSI aperiodic triggers signaling is " 01 ", it indicates that UE is by CSI process sets In conjunction, all CSI processes corresponding for NZP CSI-RS of agreement need CSI process to be processed also as this Measure respectively.
Step 65, UE are grouped measuring the CSI obtained according to transmission mechanism, by corresponding conveyer Make identical CSI and be divided into one group, and from each group of CSI, select one group of CSI of optimum as reporting information；
Such as, this NZP CSI-RS needing to comprise agreement in CSI process to be processed determined and 3 Different interferometry resources, corresponding to 3 different transmission mechanisms (unicast, 2 CS/CB, 3 CS/CB), measurement is obtained 3 CSI according to transmission mechanism and is divided into 3 groups by UE；UE compare this 3 Information capacity size corresponding for individual CSI, the CSI maximum by information capacity and the CSI process of correspondence thereof are really Fixed this needs the index in 3 CSI processes to be processed to report base station.
Step 66, base station, according to the index of the CSI process of the CSI reported and its correspondence, are known and are reported The descending channel information of CSI correspondence transmission point, thus carry out corresponding descending scheduling and transmission.
Implement three: seeing Fig. 7, the transmission method of the present embodiment CSI aperiodic comprises the following steps:
Step 71, base station are that UE configures two carrier set that CSI reports for aperiodic by high-level signaling Close；
Concrete, the mode of UE bitmap indicates the carrier wave activated in each carrier set；Wherein, Each bit in Bitmap represents a carrier wave, if a bit value is 1, then and its load represented Ripple, for activating carrier wave, is otherwise inactive carrier wave.
Step 72, base station trigger signaling instruction UE by 2 bit CSI aperiodic in DCI and carry out non- Cycle, CSI reported, and three the triggering states triggering signaling by 2 bit CSI aperiodic, indicated this Aperiodic, CSI reported carrier set used carrier set rope in two carrier set being pre-configured with Draw, or the carrier set (i.e. current carrier) of instruction UE employing agreement carries out CSI aperiodic and reports. Wherein, the instruction content of 2 bit CSI aperiodic triggering signalings is as shown in table 4.
Two of step 73, UE reception base station instruction are used for the carrier set that aperiodic, CSI reported；
After step 74, UE receive 2 bit CSI aperiodic triggering signalings of base station, non-according to this 2 bit Cycle CSI triggers information acquisition this aperiodic of the CSI of signaling instruction and reports corresponding carrier set, will be really The CSI process collection that in fixed carrier set, each carrier wave is corresponding reports required as this aperiodic of CSI Process CSI process, and based on the determination on each carrier wave this need CSI process to be processed enter respectively Row is measured；
Such as, 2 bit CSI aperiodic trigger signaling is " 10 ", it indicates that the carrier wave that high level is configured by UE All CSI process collection in set 1 carry out CSI measurement respectively.
Step 75, UE measure on each carrier wave in the CSI obtained from carrier set 1, the most each Carrier wave select at least one CSI as the reporting information of this carrier wave, by the reporting information of carrier set 1 correspondence Report base station successively, and the index of CSI process corresponding for reporting information corresponding for each carrier wave is also reported To base station；
Such as, carrier set 1 comprises carrier wave 1 and carrier wave 2, then UE is for carrier wave 1 and carrier wave 2 difference Proceed as follows:
UE is grouped measuring the CSI obtained on current carrier according to the interferometry resource used, will The CSI that the interferometry resource of use is identical is divided into one group；
UE selects one group of CSI of optimum as working as front bearing according to information capacity maximum principle from many group CSI The reporting information of ripple；
UE by the reporting information of current carrier and the CSI process of its correspondence in the CSI process of current carrier Index corresponding in set feeds back to base station.
Concrete, UE reports carrier wave 1 and the reporting information of carrier wave 2 and the index of correspondence thereof successively.
The index of the CSI process of step 76, the CSI that base station reports according to UE and correspondence thereof, acquisition reports CSI correspondence transmission point and the descending channel information of carrier wave, thus carry out corresponding descending scheduling and transmission.
Based on same inventive concept, the embodiment of the present invention additionally provide a kind of for sending non-periodic channel shape The terminal of state information, owing to this terminal solves the principle of problem and above-mentioned transmission aperiodic channel status information Method is similar, and therefore the enforcement of this terminal may refer to the enforcement of method, repeats no more in place of repetition.
Seeing Fig. 8, the embodiment of the present invention is used for sending the terminal of aperiodic channel status information CSI, including:
Determine module 81, for the instruction information sent according to the base station received, be that this terminal is joined from base station Put and notify, in all CSI process collection of this terminal, to determine that this needs CSI process to be processed；
Processing module 82, for needing each CSI process measurement to be processed to obtain the CSI of correspondence according to this；
Sending module 83, for select from all CSI at least one CSI as reporting information, and to Base station sends reporting information；
Wherein, each CSI process collection comprises at least one CSI process, in each CSI process at least At least one including a transmission point correspondence needs the metrical information of the CSI measured.
Preferably, reporting information also includes: every CSI process corresponding for CSI needs place at this determined Index information in all CSI processes of reason, or the load that every CSI process corresponding for CSI is at its place The index information in all CSI processes to be processed is needed on ripple.
Preferably, base station is sent to the instruction information of terminal and includes:
First selection strategy, for indicating terminal according to the instruction content of instruction information, determines that this needs place The CSI process of reason；Or
Second selection strategy, for indicating terminal to select to make an appointment in all CSI process collection of notice CSI process collection or the CSI process collection corresponding with the carrier set made an appointment, determine this needs The CSI process processed, wherein, carrier set includes at least one carrier wave that terminal configures, and each carrier wave Each carrier wave in set at least one CSI process collection corresponding.
Preferably, determine module 81 specifically for:
When instruction information includes the first selection strategy, and the instruction content of this instruction information is CSI process collection During index, from all CSI process collection of notice, determine the CSI corresponding with CSI process collection index All CSI processes corresponding in process collection, and the CSI process collection that will determine are that this need to be to be processed CSI process；
When instruction information includes the first selection strategy, and the instruction content of this instruction information is the transmission point set Time, from all CSI process collection of notice, determine that all CSI processes that transmission point is corresponding need as this CSI process to be processed；
When instruction information includes the first selection strategy, and the instruction content of this instruction information is NZP CSI-RS Time, from all CSI process collection of notice, determine that all CSI processes corresponding with NZP CSI-RS are made CSI process to be processed is needed for this；
When instruction information includes the first selection strategy, and the instruction content of this instruction information is interferometry resource Time, from all CSI process collection of notice, determine that all CSI processes corresponding with interferometry resource are made CSI process to be processed is needed for this；
When instruction information includes the first selection strategy, and the instruction content of this instruction information is carrier set index Time, from the carrier set of base station notice, determine the carrier set corresponding with carrier set index, and will determine Carrier set in CSI process collection corresponding to each carrier wave in corresponding all CSI processes as this Need CSI process to be processed.
Preferably, determine module 81 specifically for:
When described instruction information includes described second selection strategy, in the CSI process collection that will make an appointment Corresponding all CSI processes need CSI process to be processed as this；Or
All CSI corresponding in the CSI process collection that in the carrier set that will make an appointment, each carrier wave is corresponding Process needs CSI process to be processed as this.
If the sub-frame set that base station is different is respectively configured CSI process collection, sub-frame set includes at least one Individual subframe, and each described sub-frame set at least one CSI process collection corresponding；
For each sub-frame set, determine that module 81 is additionally operable to: determine this subframe according to described instruction information In the CSI process collection that set is corresponding, this needs CSI process to be processed；Processing module 82 is additionally operable to: According in this sub-frame set, this needs each CSI process measurement to be processed to obtain the CSI of correspondence；And send out Module 83 is sent to be additionally operable to: from measuring, all CSI that this sub-frame set obtained is corresponding to select at least one CSI is as the CSI reporting information of this sub-frame set.
Preferably, sending module 83 specifically for:
According to the different interferometry resource that this need CSI process to be processed is corresponding, obtain from measurement The selection strategy that in a plurality of CSI, basis is preset selects at least one that at least one interferometry resource is corresponding CSI is as CSI reporting information；Or,
According to the different NZP CSI-RS that this need CSI process to be processed is corresponding, obtain from measurement The selection strategy that in a plurality of CSI, basis is preset selects at least one that at least one is corresponding for NZP CSI-RS CSI is as CSI reporting information；Or,
According to the transmission mechanism that this need CSI process to be processed is corresponding, a plurality of CSI obtained from measurement The selection strategy that middle basis is preset selects at least one CSI that at least one transmission mechanism is corresponding as CSI Reporting information；
Need carrier wave corresponding to CSI process to be processed according to this, from all carrier waves, measure obtain a plurality of CSI selects, according to the selection strategy preset, at least one CSI conduct that at least one carrier wave is the most corresponding CSI reporting information；
At least one CSI conduct is selected according to the selection strategy preset from a plurality of CSI that all measurements obtain CSI reporting information.
Preferably, the selection strategy preset includes one of following or combination:
Information capacity maximum principle；
Signal to Interference plus Noise Ratio SINR maximum principle；
Higher than the information capacity thresholding principle set；And
Higher than the SINR thresholding principle set.
Based on same inventive concept, the embodiment of the present invention additionally provide a kind of for receiving non-periodic channel shape The base station of state information, owing to this base station solves the principle of problem and above-mentioned reception aperiodic channel status information Method is similar, and therefore the enforcement of this base station may refer to the enforcement of method, repeats no more in place of repetition.
Seeing Fig. 9, the embodiment of the present invention is used for receiving the base station of aperiodic channel status information, including:
Notification module 91, for notifying all CSI process collection that terminal is its configuration, each CSI enters Cheng Jihe comprises at least one CSI process, each CSI process at least includes a transmission point correspondence At least one needs the metrical information of the CSI measured；
Instruction information sending module 92, for sending instruction information to terminal, to indicate described terminal according to institute Stating instruction information is that this terminal configures and notifies to all CSI process collection of this terminal from described base station, Determine that this needs CSI process to be processed, need each CSI process measurement to be processed to obtain according to this right The CSI answered, and select at least one CSI as CSI reporting information from all CSI；
Receiver module 93, for receiving the CSI of this terminal to report, and carries out descending scheduling and biography according to CSI Defeated.
Preferably, instruction information includes:
First selection strategy, for indicating terminal according to the instruction content of instruction information, determines that this needs place The CSI process of reason；Or
Second selection strategy, for indicating terminal to select to make an appointment in all CSI process collection of notice CSI process collection or the CSI process collection corresponding with the carrier set made an appointment, determine this needs The CSI process processed, wherein, carrier set includes the carrier wave that at least one terminal configures, and each carrier wave Each carrier wave in set at least one CSI process collection corresponding.
Wherein, when instruction information includes the first selection strategy, the instruction content of instruction information can be that CSI enters Journey index of set, transmission point, the NZP CSI-RS of setting, the interferometry resource of setting or the load of setting Ripple index of set.
Preferably, notification module 91 specifically for:
All CSI process collection of its configuration it are sent as to terminal；Or
Index corresponding to CSI process being sent as in each CSI process collection of its configuration to terminal, so that Terminal determines the CSI process of correspondence according to the index that CSI process is corresponding；Or
Be sent as the bit sequence corresponding to each CSI process collection of its configuration to terminal so that terminal according to Bit sequence determines the CSI process that the CSI process collection of correspondence comprises.
Preferably, notification module 91 is additionally operable to:
If terminal have activated multiple carrier wave, and terminal supports multiple spot association on the carrier wave partly or entirely activated With transmission, all carrier waves for the support multi-point cooperative transmission of terminal are respectively configured at least one CSI process sets Close.
Preferably, notification module 91 is additionally operable to:
Be respectively configured CSI process collection for different sub-frame set, wherein, each sub-frame set include to A few subframe, and each sub-frame set at least one CSI process collection corresponding, wherein, sub-frame set is Base station is that terminal configures or arranges by both party.
Refering to Figure 10, the transmission system of embodiment of the present invention aperiodic channel status information, including:
Base station 10, for notifying all CSI process collection that terminal is its configuration；Instruction letter is sent to terminal Breath, reports to indicate terminal to carry out CSI aperiodic；And the CSI of reception terminal to report, and enter according to CSI Row descending scheduling and transmission；
Terminal 20, for the instruction information sent according to the base station received, is the institute of terminal configuration from base station Have in CSI process collection, determine that this needs CSI process to be processed；Need to be processed each according to this CSI process measurement obtains the CSI of correspondence；And select at least one CSI from measuring all CSI obtained As reporting information, and send reporting information to base station；
Wherein, each CSI process collection comprises at least one CSI process, in each CSI process at least At least one including a transmission point correspondence needs the metrical information of the CSI measured.
In embodiment of the present invention transmission system, the enforcement of base station 10 can be found in the enforcement of the method shown in Fig. 4, In transmission system, the enforcement of terminal 20 can be found in the enforcement of the method shown in Fig. 3, and here is omitted.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know 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 scope of the invention.
Embodiment of the present invention terminal is according to the instruction information of base station transmission received and owning of base station notice CSI process collection, determines that this needs CSI process to be processed；Each CSI to be processed is needed according to this Process measurement obtains the CSI of correspondence；Select from all CSI at least one CSI as CSI reporting information, And this reporting information is sent to base station；Thus decrease the feedback signaling overhead of CSI feedback aperiodic, and Also assures that the gain of CoMP, the embodiment of the present invention can also be supported to report on multiple carrier wave simultaneously The CSI that CoMP is corresponding, to support CoMP over a number of carriers.
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 (27)

1. the method sending aperiodic channel status information CSI, it is characterised in that the method bag Include:
The instruction information that terminal sends according to the base station received, is that described terminal configures and leads to from described base station Know in all CSI process collection of this terminal, determine that this needs CSI process to be processed；
Described terminal needs each CSI process measurement to be processed to obtain the CSI of correspondence according to this；
Described terminal select from all CSI at least one CSI as CSI reporting information, and to described base Stand and send described CSI reporting information；
Wherein, each described CSI process collection comprises at least one CSI process, each described CSI Process at least includes the metrical information of the CSI of at least one needs measurement of a transmission point correspondence.
2. the method for claim 1, it is characterised in that described terminal receives what base station sent Before instruction information, also include:
Described base station is sent as all CSI process collection of its configuration to described terminal；Or
It is corresponding that described base station is sent as the CSI process in each CSI process collection of its configuration to described terminal Index so that described terminal according to the index that described CSI process is corresponding determine correspondence CSI process；Or
Described base station is sent as, to described terminal, the bit sequence that its each CSI process collection configured is corresponding, So that described terminal determines, according to described bit sequence, the CSI process that the CSI process collection of correspondence comprises.
3. the method for claim 1, it is characterised in that described instruction information includes:
First selection strategy, for indicating terminal according to the instruction content of described instruction information, determines that this needs CSI process to be processed；Or
Second selection strategy, for indicating terminal to select to make an appointment in all CSI process collection of notice CSI process collection or the CSI process collection corresponding with the carrier set made an appointment, determine this needs The CSI process processed, wherein, described carrier set includes at least one carrier wave that described terminal configures, and Each carrier wave in each described carrier set at least one CSI process collection corresponding.
4. method as claimed in claim 3, it is characterised in that when described instruction information includes described the One selection strategy, and when the instruction content of described instruction information is CSI process collection index, described terminal is true Fixed this needs CSI process to be processed to include:
Described terminal determines corresponding with described CSI process collection index from all CSI process collection of notice CSI process collection, and all CSI processes comprised in the CSI process collection that will determine as this need CSI process to be processed；
When described instruction information includes described first selection strategy, and the instruction content of described instruction information is for setting During fixed transmission point, described terminal determines that this needs CSI process to be processed to include:
Described terminal determines corresponding the owning of transmission point of described setting from all CSI process collection of notice CSI process needs CSI process to be processed as this；
When described instruction information includes described first selection strategy, and the instruction content of described instruction information is non- During zero energy channel state information reference signals NZP CSI-RS, it is to be processed that described terminal determines that this needs CSI process includes:
Described terminal determines the institute corresponding with described NZP CSI-RS from all CSI process collection of notice CSI process is had to need CSI process to be processed as this；
When described instruction information includes described first selection strategy, and the instruction content of described instruction information is dry When disturbing measurement resource, described terminal determines that this needs CSI process to be processed to include:
Described terminal determines the institute corresponding with described interferometry resource from all CSI process collection of notice CSI process is had to need CSI process to be processed as this；
When described instruction information includes described first selection strategy, and the instruction content of described instruction information is for carrying During ripple index of set, described terminal determines that this needs CSI process to be processed to include:
Described terminal determines corresponding with described carrier set index from the carrier set that described base station notifies The institute comprised in the CSI process collection that each carrier wave in carrier set, and the carrier set that will determine is corresponding CSI process is had to need CSI process to be processed as this.
5. method as claimed in claim 3, it is characterised in that when described instruction information includes described the During two selection strategyes, described terminal determines that this needs CSI process to be processed to include:
The all CSI processes comprised in the CSI process collection that described terminal will be made an appointment are as these needs The CSI process processed；Or
The CSI process collection that in the carrier set that described terminal will be made an appointment, each carrier wave is corresponding comprises All CSI processes need CSI process to be processed as this.
6. method as claimed in claim 3, it is characterised in that described base station is different sub-frame set Being respectively configured CSI process collection, wherein, described sub-frame set includes at least one subframe, and each institute State sub-frame set at least one CSI process collection corresponding；
Described terminal determines that this needs CSI process to be processed to include:
For each sub-frame set, according to described instruction information, described terminal determines that this sub-frame set is corresponding In CSI process collection, this needs CSI process to be processed；
Described terminal includes according to this CSI needing each CSI process measurement to be processed to obtain correspondence:
For each sub-frame set, according in this sub-frame set, this needs each CSI to be processed to described terminal Process measurement obtains the CSI of correspondence；
Described terminal selects at least one CSI to include as CSI reporting information from all CSI:
For each sub-frame set, described terminal is from measuring all CSI that this sub-frame set obtained is corresponding Select at least one CSI as the CSI reporting information of this sub-frame set.
7. the method as described in as arbitrary in claim 1～6, it is characterised in that described terminal is from all CSI Middle selection at least one CSI is as CSI reporting information, including one of following or combination:
Described terminal needs different interferometry resources corresponding to CSI process to be processed according to this, from survey The a plurality of CSI measured select at least one interferometry resource corresponding extremely according to the selection strategy preset A few CSI is as CSI reporting information；Or,
Described terminal needs different NZP CSI-RS corresponding to CSI process to be processed according to this, from survey The a plurality of CSI measured select at least one NZP CSI-RS corresponding extremely according to the selection strategy preset A few CSI is as CSI reporting information；Or,
Described terminal needs transmission mechanism corresponding to CSI process to be processed according to this, from measure obtain many Bar CSI selects, according to the selection strategy preset, at least one CSI conduct that at least one transmission mechanism is corresponding CSI reporting information；
Described terminal needs carrier wave corresponding to CSI process to be processed according to this, measures from all carrier waves To a plurality of CSI in select at least one carrier wave respectively corresponding at least one according to the selection strategy preset CSI is as CSI reporting information；
Described terminal selects at least one according to the selection strategy preset from a plurality of CSI that all measurements obtain CSI is as CSI reporting information.
8. method as claimed in claim 7, it is characterised in that under described default selection strategy includes One of row or combination:
The principle that information capacity is maximum；
The principle that Signal to Interference plus Noise Ratio SINR is maximum；
Principle higher than the information capacity thresholding set；
Principle higher than the SINR thresholding set.
9. the method for claim 1, it is characterised in that described CSI reporting information also includes: Every CSI process corresponding for CSI needs the index letter in all CSI processes to be processed at this determined Cease, or every CSI process corresponding for CSI needs all CSI processes to be processed on the carrier wave at its place In index information.
10. the method receiving aperiodic channel status information, it is characterised in that the method includes:
Base station notice terminal is all CSI process collection of its configuration, wraps in each described CSI process collection Include at least one CSI process, each described CSI process at least includes at least the one of a transmission point correspondence The metrical information of the individual CSI needing to measure；
Described base station to described terminal send instruction information, with indicate described terminal according to described instruction information from Described base station is that this terminal configures and notifies, in all CSI process collection of this terminal, to determine this needs The CSI process processed, needs each CSI process measurement to be processed to obtain the CSI of correspondence according to this, and Select at least one CSI as CSI reporting information from all CSI；
Described base station receives the CSI of described terminal to report, and carries out descending scheduling and transmission according to described CSI.
11. methods as claimed in claim 10, it is characterised in that base station notice terminal is its configuration All CSI process collection include:
Described base station is sent as all CSI process collection of its configuration to described terminal；Or
It is corresponding that described base station is sent as the CSI process in each CSI process collection of its configuration to described terminal Index so that described terminal according to the index that described CSI process is corresponding determine correspondence CSI process；Or
Described base station is sent as, to described terminal, the bit sequence that its each CSI process collection configured is corresponding, So that described terminal determines, according to described bit sequence, the CSI process that the CSI process collection of correspondence comprises.
12. methods as claimed in claim 10, it is characterised in that if described terminal have activated multiple load Ripple, and described terminal support multi-point cooperative transmission on the carrier wave partly or entirely activated；
Described base station notice terminal is that all CSI process collection of its configuration include:
Described base station is that all carrier waves of the support multi-point cooperative transmission of described terminal are respectively configured at least one CSI process collection.
13. methods as claimed in claim 10, it is characterised in that described base station is different subframe collection Conjunction is respectively configured CSI process collection, and wherein, described sub-frame set includes at least one subframe, and each Described sub-frame set at least one CSI process collection corresponding.
14. methods as claimed in claim 10, it is characterised in that described instruction information includes:
First selection strategy, for indicating terminal according to the instruction content of described instruction information, determines that this needs CSI process to be processed；Or
Second selection strategy, for indicating terminal to select to make an appointment in all CSI process collection of notice CSI process collection or the CSI process collection corresponding with the carrier set made an appointment, determine this needs The CSI process processed, wherein, described carrier set includes the carrier wave that at least one described terminal configures, and Each carrier wave in each described carrier set at least one CSI process collection corresponding.
15. methods as claimed in claim 14, it is characterised in that the instruction content of described instruction information For CSI process collection index, transmission point, the NZP CSI-RS of setting, the interferometry of setting of setting Resource or carrier set index.
16. 1 kinds for sending the terminal of aperiodic channel status information CSI, it is characterised in that described end End includes:
Determine module, for the instruction information sent according to the base station received, be described end from described base station End configuration also notifies, in all CSI process collection of this terminal, to determine that this needs CSI process to be processed；
Processing module, for needing each CSI process measurement to be processed to obtain the CSI of correspondence according to this；
Sending module, for select from all CSI at least one CSI as CSI reporting information, and to Described base station sends described CSI reporting information；
Wherein, each described CSI process collection includes at least one CSI process, each described CSI Process at least includes the metrical information of the CSI of at least one needs measurement of a transmission point correspondence.
17. terminals as claimed in claim 16, it is characterised in that described instruction information includes:
First selection strategy, for indicating terminal according to the instruction content of described instruction information, determines that this needs CSI process to be processed；Or
Second selection strategy, for indicating terminal to select to make an appointment in all CSI process collection of notice CSI process collection or the CSI process collection corresponding with the carrier set made an appointment, determine this needs The CSI process processed, wherein, described carrier set includes at least one carrier wave that described terminal configures, and Each carrier wave in each described carrier set at least one CSI process collection corresponding.
18. terminals as claimed in claim 17, it is characterised in that described determine module specifically for:
When described instruction information includes described first selection strategy, and the instruction content of described instruction information is During CSI process collection index, determine and described CSI process collection from all CSI process collection of notice The CSI process collection that index is corresponding, and in the CSI process collection that will determine, all CSI processes of correspondence are This needs CSI process to be processed；
When described instruction information includes described first selection strategy, and the instruction content of described instruction information is for setting During fixed transmission point, from all CSI process collection of notice, determine all CSI that described transmission point is corresponding Process needs CSI process to be processed as this；
When described instruction information includes described first selection strategy, and the instruction content of described instruction information is During NZP CSI-RS, determine corresponding with described NZP CSI-RS from all CSI process collection of notice All CSI processes need CSI process to be processed as this；
When described instruction information includes described first selection strategy, and the instruction content of described instruction information is dry When disturbing measurement resource, determine corresponding with described interferometry resource from all CSI process collection of notice All CSI processes need CSI process to be processed as this；
When described instruction information includes described first selection strategy, and the instruction content of described instruction information is for carrying During ripple index of set, determine corresponding with described carrier set index from the carrier set that described base station notifies Institute corresponding in the CSI process collection that each carrier wave in carrier set, and the carrier set that will determine is corresponding CSI process is had to need CSI process to be processed as this.
19. terminals as claimed in claim 17, it is characterised in that described determine module specifically for:
When described instruction information includes described second selection strategy, in the CSI process collection that will make an appointment Corresponding all CSI processes need CSI process to be processed as this；Or
All CSI corresponding in the CSI process collection that in the carrier set that will make an appointment, each carrier wave is corresponding Process needs CSI process to be processed as this.
20. terminals as claimed in claim 17, it is characterised in that
Described determine that module is additionally operable to: for each sub-frame set, determine this subframe according to described instruction information In the CSI process collection that set is corresponding, this needs CSI process to be processed；
Described processing module is additionally operable to: for each sub-frame set, according in this sub-frame set, this needs place Each CSI process measurement of reason obtains the CSI of correspondence；
Described sending module is additionally operable to: for each sub-frame set, from measuring, this sub-frame set obtained is corresponding All CSI in select at least one CSI as the CSI reporting information of this sub-frame set；
Wherein, the sub-frame set that described base station is different is respectively configured CSI process collection, described sub-frame set Include at least one subframe, and each described sub-frame set at least one CSI process collection corresponding.
21. as arbitrary in claim 16～20 as described in terminal, it is characterised in that described sending module is concrete For:
According to the different interferometry resource that this need CSI process to be processed is corresponding, obtain from measurement The selection strategy that in a plurality of CSI, basis is preset selects at least one that at least one interferometry resource is corresponding CSI is as CSI reporting information；Or,
According to the different NZP CSI-RS that this need CSI process to be processed is corresponding, obtain from measurement The selection strategy that in a plurality of CSI, basis is preset selects at least one that at least one is corresponding for NZP CSI-RS CSI is as CSI reporting information；Or,
According to the transmission mechanism that this need CSI process to be processed is corresponding, a plurality of CSI obtained from measurement The selection strategy that middle basis is preset selects at least one CSI that at least one transmission mechanism is corresponding as CSI Reporting information；
Need carrier wave corresponding to CSI process to be processed according to this, from all carrier waves, measure obtain a plurality of CSI selects, according to the selection strategy preset, at least one CSI conduct that at least one carrier wave is the most corresponding CSI reporting information；
At least one CSI conduct is selected according to the selection strategy preset from a plurality of CSI that all measurements obtain CSI reporting information.
22. terminals as claimed in claim 21, it is characterised in that described default selection strategy includes One of following or combination:
Information capacity maximum principle；
Signal to Interference plus Noise Ratio SINR maximum principle；
Higher than the information capacity thresholding principle set；
Higher than the SINR thresholding principle set.
23. 1 kinds for receiving the base station of aperiodic channel status information, it is characterised in that this base station includes:
Notification module, for notifying all CSI process collection that terminal is its configuration, each described CSI Process collection includes at least one CSI process, at least includes a transmission point in each described CSI process Corresponding at least one needs the metrical information of the CSI measured；
Instruction information sending module, for described terminal send instruction information, with indicate described terminal according to Described instruction information is that this terminal configures and notifies to all CSI process collection of this terminal from described base station In, determine that this needs CSI process to be processed, need each CSI process to be processed to measure according to this To corresponding CSI, and select at least one CSI as CSI reporting information from all CSI；
Receiver module, for receiving the CSI of described terminal to report, and carries out descending scheduling according to described CSI And transmission.
24. base stations as claimed in claim 23, it is characterised in that described notification module specifically for:
All CSI process collection of its configuration it are sent as to described terminal；Or
Index corresponding to CSI process being sent as in each CSI process collection of its configuration to described terminal, So that described terminal determines the CSI process of correspondence according to the index that described CSI process is corresponding；Or
It is sent as the bit sequence that its each CSI process collection configured is corresponding to described terminal, so that described Terminal determines, according to described bit sequence, the CSI process that the CSI process collection of correspondence comprises.
25. base stations as claimed in claim 23, it is characterised in that described notification module is additionally operable to:
When described terminal have activated multiple carrier wave, and described terminal is propped up on the carrier wave partly or entirely activated When holding multi-point cooperative transmission, all carrier waves for the support multi-point cooperative transmission of described terminal are respectively configured at least One CSI process collection.
26. base stations as claimed in claim 23, it is characterised in that described notification module is additionally operable to:
It is respectively configured CSI process collection for different sub-frame set, wherein, each described sub-frame set is wrapped Include at least one subframe, and each described sub-frame set at least one CSI process collection corresponding.
The transmission system of 27. 1 kinds of aperiodic channel status informations, it is characterised in that this system includes:
Base station, for notifying all CSI process collection that terminal is its configuration；Instruction is sent to described terminal Information, to indicate described terminal to carry out CSI process aperiodic；And receive the CSI of described terminal to report, and Descending scheduling and transmission is carried out according to described CSI；
Terminal, for the instruction information sent according to the base station received, is that described terminal is joined from described base station Put and notify, in all CSI process collection of this terminal, to determine that this needs CSI process to be processed；Root Each CSI process measurement to be processed is needed to obtain the CSI of correspondence according to this；And select from all CSI At least one CSI is as CSI reporting information, and sends described CSI reporting information to described base station；
Wherein, each described CSI process collection includes at least one CSI process, each described CSI Process at least includes the metrical information of the CSI of at least one needs measurement of a transmission point correspondence.
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