CN105227272B - A kind of large scale MIMO transmission method and device - Google Patents
A kind of large scale MIMO transmission method and device Download PDFInfo
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- CN105227272B CN105227272B CN201410304565.9A CN201410304565A CN105227272B CN 105227272 B CN105227272 B CN 105227272B CN 201410304565 A CN201410304565 A CN 201410304565A CN 105227272 B CN105227272 B CN 105227272B
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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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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Abstract
The invention proposes a kind of large scale MIMO transmission method and devices.Base station sends the first signaling in step 1 and indicates the first subframe collection；In step 2, on given carrier wave, measurement RS is sent on the downlink subframe that the first subframe is concentrated；In step 3, target CSI is received, the reference resources of the target CSI include the measurement RS.Wherein, the measurement RS includes the M port RS, and the port RS given for 1 is appeared in each time window on the downlink subframe in S candidate's subframes, and the S candidate's subframes belong to the first subframe collection.The S candidate's subframes in the window in time window position be time-varying.It by dynamic signal deployment is uplink and leading to certain ports RS always can not be sent that the solution of the present invention, which avoids in eIMTA scene since some subframe is fixed,.In addition, the present invention reuses existing LTE design as far as possible, the compatibility with existing system is utmostly maintained.
Description
Technical field
The present invention relates to channel state measurement in mobile communication technology field and the schemes of feedback, more particularly to use
Massive MIMO (Massive Multiple Input MultipleOutput, extensive Multiinputoutput) technology
Downlink channel state measurement and feedback scheme in mobile communication system.
Background technique
3GPP (3rd Generation Partner Project, third generation cooperative partner program) R (Release, version
This) introduce in 12 eIMTA (enhanced Interference Management Traffic Adaptation, enhancing
Interference management service adaptation) technology, i.e., for TDD (Time Division Duplex, time division duplex) frame structure, Neng Goutong
Dynamic signaling adjustment tdd frame structure is crossed, the adjustment period is one in { 10,20,40,80 } ms (millisecond, millisecond),
Possible tdd frame structure includes totally 7 kinds of TDD UL (Uplink, the uplink)/DL (Downlink, downlink) of #0~6 defined in LTE
Frame structure.For configuring the dynamic signaling (eIMTA signaling) of frame structure by eIMTA-RNTI (Radio Network
Temporary Identifier, wireless network fix tentatively identifier) mark.
In traditional 3GPP LTE (Long Term Evolution, long term evolution) system, the CSI of downlink mimo channel
(Channel Status Indicator, channel status instruction) there are mainly two types of modes for feedback
Feed back implicit CSI
UE (User Equipment, user equipment) passes through detection CRS (Cell specific Reference
Signal, the specific reference signal of cell) either CSI-RS (CSI Reference Signal, channel status instruction reference
Signal) it obtains CIR (Channel Impulse Response, channel impulse response) and is mapped as implicit CSI, it is described implicit
CSI includes PTI (Precoding Type Indicator, precoding type instruction), and (Rank Indicator, order refer to RI
Show), CQI (Channel Quality Indicator, channel quality instruction), PMI (Precoding Matrix
Indicator, pre-coding matrix instruction) etc. information.
Attached drawing 1 is in an existing LTE system based on Normal CP (Normal Cyclic Prefix, before normal circulation
Sew) CSI-RS pattern-and meanwhile indicated CRS and DMRS (Demodulation Reference Signal, demodulation reference
Signal), one of lattice is the least resource unit-RE (Resource Element, resource particle) of LTE.Oblique line mark
The RE shown can be used to send CSI-RS (cell at most occupies 8 RE therein), and the RE of cross spider mark can be used to send
The RE of DMRS, overstriking line mark can be used to send CRS.LTE system uses the concept definition RS resource of port: a port RS can
A physical antenna can be mapped to, it is also possible to be more physical antennas by merging a superposition piece virtual antenna of formation.LTE
Define 4 kinds of CSI-RS port numbers: 1,2,4,8, the RE that number is indicated in attached drawing 1 illustrates the figure of one group of port 8CSI-RS
Case example, digital representation port index.
It feeds back SRS (Sounding Reference Signal, uplink sounding reference signal)
UE sends uplink SRS, and system side obtains up channel CSI by demodulation SRS, under obtaining further according to link symmetry
Row CSI.This method is primarily adapted for use in TDD (Time Duplex Division, time division duplex) system.
As a kind of new Cellular Networks antenna frame, Massive MIMO becomes a research hotspot recently.Massive
The typical feature of mimo system is by increasing the quantity of antenna array unit to biggish value to obtain a series of gains, example
Such as, power system capacity theoretically continues to increase with the increase of antenna amount；The coherent superposition of transmitting antenna signal reduces transmitting
Power etc..The challenge that Massive MIMO is faced is how to ensure that base station equipment accurately obtains downlink CSI.
It is at present based on TDD system about the main research of Massive MIMO, i.e., is to be using SRS and link symmetry
Unite side acquisition downlink CSI.In view of (such as FDD is difficult to adopt, the asymmetry of radio frequency link, SRS pilot tone for the limitation of SRS
Pollution, SRS resource is limited, cannot indicate CQI etc.), implicit CSI may still play the part of important angle in Massive MIMO transmission
Color.UE needs to detect downlink measurement RS (Reference Signal, reference signal) to obtain implicit CSI.Due to Massive
Antenna port quantity in MIMO is larger (traditional CSI-RS port number is not more than 8), and downlink measurement RS may be occupied in subframe
Most running time-frequency resource-so that be unable to satisfy orthogonality between cell.Further, in eIMTA transmission, downlink is surveyed
The available subframe of amount RS changes with the UL/DL frame structure of dynamic configuration, has been further exacerbated by the difficulty of downlink measurement RS configuration
Degree.
In view of the above-mentioned problems, the invention proposes a kind of downlinks suitable for Massive MIMO transmission to measure RS scheme.
Summary of the invention
The invention discloses a kind of methods in base station, wherein includes the following steps:
Step A. sends the first signaling and indicates the first subframe collection
Step B. sends measurement RS on given carrier wave on the downlink subframe that the first subframe is concentrated
Step C. receives target CSI, and the reference resources of the target CSI include the measurement RS.
Wherein, the given carrier wave is made of continuous time window in the time domain, and 1 time window is by N number of continuous subframes group
At the N is greater than 1 positive integer.The measurement RS includes the M port RS, and the port the M RS is most in 1 subframe
There is the M1 port RS, the M is greater than 8 positive integer, and the M1 is less than the positive integer of the M.The end RS given for 1
Mouthful, it is appeared in each time window on the downlink subframe in S candidate's subframes, the S candidate's subframes belong to the first son
Frame collection.The S candidate's subframes in the window in time window position be time-varying, the S is less than the positive integer of the N.
The target CSI is in { API (Antenna Port Index, antenna port index), PTI, RI, PMI, CQI }
One or more.The RS of 1 port RS is sent by 1 antenna port.The time-varying refers to the S candidate's subframes
Position may be different in the window in the different time windows.The M2 end RS in the API instruction port the M RS
Mouthful, the M2 is no more than the positive integer of the M.
As one embodiment, the RS of the port the M RS is respectively after M precoding vector precoding by the base
The transmission antenna stood is sent, and the precoding vector includes X element, and the X is the transmission antenna number of the base station.
As one embodiment, the API is the bit diagram of M bit, and the M bit indicates respectively the M RS
Whether port is selected.
As one embodiment, the N be 10 positive integer times.
As one embodiment, the first signaling is RRC (Radio Resource Control, wireless resource management) letter
It enables.
As one embodiment, the first subframe collection includes the window of E1 subframe and the E1 subframe in each time window
Interior position is fixed.
As one embodiment, the first subframe collection is the subframe of one group or multiple groups CSI-RS resource occupancy, 1 group of CSI-RS
Resource is the RE resource configured by 1 CSI-RS Resource Configuration.
As one embodiment, the special subframe in tdd frame structure also belongs to the downlink subframe.
As one embodiment, the pattern that the port the M1 RS occupies in subframe is the M1 port CSI-RS in subframe
Interior pattern, wherein pattern of 1 port RS in subframe is pattern of 1 port CSI-RS in subframe, the M1
It is one in { 1,2,4,8 }.
As one embodiment, the physical resource that 1 port RS occupies in subframe is 1 port CSI-RS in son
The physical resource occupied in frame, the physical resource includes time domain, frequency domain and code domain.
As one embodiment, the RS sequence that the port RS uses is CSI-RS sequence.As one embodiment, first
Signaling is CSI-RS-Config-r10 IE (Information Element, information particle), the first subframe collection include according to
The transmission subframe of CSI-RS determines the subframe that scheme is determined according to the resourceConfig-r10 in the first signaling in LTE.This
Embodiment does not introduce new measurement RS pattern, so that can support traditional UE and support in a subframe simultaneously
The UE of Massive MIMO has good compatibility.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A0. sends physical layer signaling and indicates the given carrier wave within the configuration period of the physical layer signaling
The downlink subframe.
As one embodiment, the physical layer signaling is eIMTA signaling, and the configuration period is matching for eIMTA signaling
It sets the period, as one of { 10ms (millisecond, millisecond), 20ms, 40ms, 80ms }.As another embodiment,
The given carrier wave is deployed in unlicensed spectrum, and the configuration period is 1 subframe.
Specifically, according to an aspect of the present invention, which is characterized in that the S candidate's subframes are in first time window
Window in position and the S candidate's subframes there are mapping relations for position in the window in the second time window.Second time window is
First time window after first time window.
As one embodiment of above-mentioned aspect, the first subframe collection includes E1 subframe in each time window, and
Position I (0) ... in the window of the E1 subframe, I (E1-1) be it is fixed, the E1 is no more than the positive integer of N.For
One time window, position is (a (1)) I ... in the window of the S candidate's subframes, I (a (S)), for the second time window, the S
Position is I (mod (a (1)+k, E1)) in the window of candidate's subframes ..., I (mod (a (S)+k, E1)).The a (1) ..., a (S)
It is all greater than -1 and is less than the positive integer of E1.The k is less than 10 positive integer.Mod (A, B) is remainder of the A divided by B.As
One embodiment of the k, the k are 1.
As a sub- embodiment of above-described embodiment, the I (a (1)) ..., I (a (S)) is by the index of first time window
What the W1 and port index R1 (0~M-1) in the port the M RS of the given port RS was determined.One may be really
It is as follows to determine method:
Pattern of the S candidate's subframes in the E1 subframe be predefined E1 kind pattern (pattern index 0~
One of E1-1).The I (a (1)) ..., the corresponding pattern index of I (a (S)) is mod (mod (W1, E1)+floor (R1/
M1), E1), floor (X) is no more than the maximum integer of X.The index of the given time window is existed by the given time window
Current index of the SFN (System Frame Number, System Frame Number) in the period, the SFN period includes continuous 1024 nothings
Line frame (corresponding SFN is from 0 to 1023), the index of the given time window are 0 integer for arriving ceil (10240/N) -1, ceil (X)
Indicate the smallest positive integral for being not less than X.
Specifically, according to an aspect of the present invention, which is characterized in that the S is 1.
The invention discloses a kind of methods in UE, wherein includes the following steps:
Step A. receives the first signaling and determines the first subframe collection
Step B. receives measurement RS on given carrier wave on the downlink subframe that the first subframe is concentrated
Step C. sends target CSI, and the reference resources of the target CSI include the measurement RS.
Wherein, the given carrier wave is made of continuous time window in the time domain, and 1 time window is by N number of continuous subframes group
At the N is greater than 1 positive integer.The measurement RS includes the M port RS, and the port the M RS is most in 1 subframe
There is the M1 port RS, the M is greater than 8 positive integer, and the M1 is less than the positive integer of the M.The end RS given for 1
Mouthful, it is appeared in each time window on the downlink subframe in S candidate's subframes, the S candidate's subframes belong to the first son
Frame collection.The S candidate's subframes in the window in time window position be time-varying, the S is less than the positive integer of the N.
As one embodiment, the given carrier wave is deployed in TDD frequency range.As one embodiment, the given carrier wave
It is deployed in unauthorized frequency range.As another embodiment, the given carrier wave is deployed in FDD frequency range.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A0. receives physical layer signaling and determines the given carrier wave within the configuration period of the physical layer signaling
The downlink subframe.
Specifically, according to an aspect of the present invention, which is characterized in that the S candidate's subframes are in first time window
Window in position and the S candidate's subframes there are mapping relations for position in the window in the second time window.Second time window is
First time window after first time window.
Specifically, according to an aspect of the present invention, which is characterized in that the first subframe collection wraps in each time window
Include E1 subframe, and position I (0) in the window of the E1 subframe ..., I (E1-1) be it is fixed, the E1 is no more than N's
Positive integer.For first time window, position is (a (1)) I ..., I (a (S)), for second in the window of the S candidate's subframes
Time window, position is I (mod (a (1)+k, E1)) ..., I (mod (a (S)+k, E1)) in the window of the S candidate's subframes.It is described
A (1) ..., a (S) is greater than -1 and is less than the positive integer of E1.The k is less than 10 positive integer.
Specifically, according to an aspect of the present invention, which is characterized in that the S is 1.
The invention discloses a kind of base station equipments, which is characterized in that the equipment includes:
First module: the first subframe collection is indicated for sending the first signaling
Second module: for sending measurement RS on the downlink subframe that the first subframe is concentrated in given carrier wave
Third module: for receiving target CSI, the reference resources of the target CSI include the measurement RS.
Wherein, the given carrier wave is made of continuous time window in the time domain, and 1 time window is by N number of continuous subframes group
At the N is greater than 1 positive integer.The measurement RS includes the M port RS, and the port the M RS is most in 1 subframe
There is the M1 port RS, the M is greater than 8 positive integer, and the M1 is less than the positive integer of the M.The end RS given for 1
Mouthful, it is appeared in each time window on the downlink subframe in S candidate's subframes, the S candidate's subframes belong to the first son
Frame collection.The S candidate's subframes in the window in time window position be time-varying, the S is less than the positive integer of the N.
As one embodiment, above equipment is characterized in that, the first module is also used to send physical layer signaling instruction institute
State the downlink subframe of the given carrier wave within the configuration period of the physical layer signaling.
The invention discloses a kind of user equipmenies, which is characterized in that the equipment includes:
First module: the first subframe collection is determined for receiving the first signaling
Second module: for receiving measurement RS on the downlink subframe that the first subframe is concentrated in given carrier wave
Third module: for sending target CSI, the reference resources of the target CSI include the measurement RS.
Wherein, the given carrier wave is made of continuous time window in the time domain, and 1 time window is by N number of continuous subframes group
At the N is greater than 1 positive integer.The measurement RS includes the M port RS, and the port the M RS is most in 1 subframe
There is the M1 port RS, the M is greater than 8 positive integer, and the M1 is less than the positive integer of the M.The end RS given for 1
Mouthful, it is appeared in each time window on the downlink subframe in S candidate's subframes, the S candidate's subframes belong to the first son
Frame collection.The S candidate's subframes in the window in time window position be time-varying, the S is less than the positive integer of the N.
As one embodiment, above equipment is characterized in that, the first module is also used to receive physical layer signaling and determines institute
State the downlink subframe of the given carrier wave within the configuration period of the physical layer signaling.
This problem of excessive interface-free resources is occupied for RS is measured in Massive mimo system, of the invention proposes
It is sent in a kind of multiple subframes that multiple ports RS are distributed in a time window, reduces the measurement RS in a subframe
The interface-free resources of occupancy.Further, the subframe position that the multiple port RS occupies in time windows be it is variable, keep away
Exempt to be uplink by dynamic signal deployment since some subframe is fixed in eIMTA scene and has caused certain ports RS always can not be by
It sends.In addition, the present invention reuses existing LTE design as far as possible, the compatibility with existing system is utmostly maintained.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows the schematic diagram of the downlink RS pattern of existing LTE system；
Fig. 2 shows CSI feedback flow charts according to an embodiment of the invention；
Fig. 3 shows the schematic diagram of the first subframe collection according to an embodiment of the invention；
Fig. 4 shows the first subframe collection in TDD UL/DL frame structure scene according to still another embodiment of the invention
Schematic diagram；
Fig. 5 shows the schematic diagram of measurement RS pattern according to an embodiment of the invention；
Fig. 6 shows the structural block diagram according to an embodiment of the invention for the processing unit in base station；
Fig. 7 shows the structural block diagram according to an embodiment of the invention for the processing unit in UE；
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with attached drawing, it should be noted that do not rushing
In the case where prominent, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Embodiment 1
Embodiment 1 is CSI feedback flow chart, as shown in Fig. 2.In attached drawing 2, base station N1 is the serving BS of UE U2.Side
The step of identifying in frame F1 is optional step.
For base station N1, in step s 11, sends the first signaling and indicate the first subframe collection；In step s 13, given
On carrier wave, measurement RS is sent on the downlink subframe that the first subframe is concentrated；In step S14, target CSI, the target are received
The reference resources of CSI include the measurement RS.For UE U2, in the step s 21, receives the first signaling and determine the first subframe collection；
In step S23, on given carrier wave, measurement RS is received on the downlink subframe that the first subframe is concentrated；In step s 24, it sends out
Target CSI is sent, the reference resources of the target CSI include the measurement RS.
In embodiment 1, the given carrier wave is made of continuous time window in the time domain, and 1 time window is by N number of continuous son
Frame composition, the N are greater than 1 positive integer.The measurement RS includes the M port RS, and the port the M RS is in 1 subframe
At most there is the M1 port RS, the M is greater than 8 positive integer, and the M1 is less than the positive integer of the M.It is given for 1
The port RS is appeared in each time window on the downlink subframe in S candidate's subframes, and the S candidate's subframes belong to
One subframe collection.The S candidate's subframes in the window in time window position be time-varying, the S is less than the just whole of the N
Number.
As the sub- embodiment 1 of embodiment 1, for base station N1, in step s 12, send described in physical layer signaling instruction
The downlink subframe of the given carrier wave within the configuration period of the physical layer signaling.For UE U2, in step S22, receive
Physical layer signaling determines the downlink subframe of the given carrier wave within the configuration period of the physical layer signaling.
As the sub- embodiment 2 of embodiment 1, the S candidate's subframes position and S in the window in first time window
There are mapping relations for position in the window in the second time window for a candidate's subframes.Second time window is after first time window
One time window.
As the sub- embodiment 3 of embodiment 1, the S is 1.
Embodiment 2
Embodiment 2 is the schematic diagram of the first subframe collection, as shown in Fig. 3.In attached drawing 3, the grid of bold box mark is the
The subframe that one subframe is concentrated, the grid of oblique line mark are the candidate's subframes of the given port RS.
For base station, the first signaling is sent first and indicates the first subframe collection；Then on given carrier wave, in the first subframe collection
In downlink subframe on send measurement RS；Then target CSI is received, the reference resources of the target CSI include the measurement RS.
For UE U2, the first signaling is received first and determines the first subframe collection；Then on given carrier wave, under the first subframe concentration
Measurement RS is received in row subframe；Then target CSI is sent, the reference resources of the target CSI include the measurement RS.
In embodiment 2, the given carrier wave is made of continuous time window in the time domain, and 1 time window is by N number of continuous son
Frame composition, the N are greater than 1 positive integer.The measurement RS includes the M port RS, and the port the M RS is in 1 subframe
At most there is the M1 port RS, the M is greater than 8 positive integer, and the M1 is less than the positive integer of the M.First subframe collection
It include E1 subframe (as shown in the grid of bold box mark) in each time window, and position in the window of the E1 subframe
It is fixed for setting.For giving the port RS, 1 candidate's subframes (such as thick line of oblique line mark is appeared in each time window
Shown in grid) in downlink subframe on-i.e. if the candidate's subframes are configured as downlink subframe or special subframe, base station exists
The given port RS is sent in the candidate's subframes, if the candidate's subframes are configured as sub-frame of uplink, base station is described
The given port RS is not sent in candidate's subframes.As shown in Fig. 3, position is in window of the candidate's subframes in time window
Time-varying.
As a sub- embodiment of embodiment 2, the candidate's subframes are in continuous time window successively in the first subframe
Concentration moves to right a subframe.
Embodiment 3
Embodiment 3 is the schematic diagram of the first subframe collection in TDD UL/DL frame structure scene, as shown in Fig. 4.Attached drawing 4
In, the grid of bold box mark is the subframe that the first subframe is concentrated, and the grid of oblique line mark is the candidate's subframes of the given port RS.
For base station, the first signaling is sent first and indicates the first subframe collection；Then it sends eIMTA signaling and indicates given carrier wave
Downlink subframe within the configuration period of the eIMTA signaling；Then on the given carrier wave, under the first subframe concentration
Measurement RS is sent in row subframe；Then target CSI is received, the reference resources of the target CSI include the measurement RS.For UE
U2 receives the first signaling first and determines the first subframe collection；Then it receives eIMTA signaling and determines that given carrier wave is believed in the eIMTA
Downlink subframe in the configuration period of order；Then on given carrier wave, measurement is received on the downlink subframe that the first subframe is concentrated
RS；Then target CSI is sent, the reference resources of the target CSI include the measurement RS.
In embodiment 3, the given carrier wave is made of continuous time window in the time domain, and 1 time window is 1 radio frames
(being made of 10 continuous subframes).The measurement RS includes the M port RS, and the port the M RS at most occurs in 1 subframe
The M1 port RS, the M are greater than 8 positive integer, and the M1 is less than the positive integer of the M.First subframe collection is at each
It all include 2 subframes (shown in the grid identified such as bold box) in time window, and position is fixed in the window of 2 subframes
's.For giving the port RS, 1 candidate's subframes is appeared in each time window (shown in the thick line grid identified such as oblique line)
In downlink subframe on-i.e. if the candidate's subframes are configured as downlink subframe or special subframe, base station is in the candidate
The given port RS is sent in subframe, if the candidate's subframes are configured as sub-frame of uplink, base station is in the candidate's subframes
On do not send the given port RS.As shown in Fig. 4, position is time-varying in window of the candidate's subframes in time window.
As shown in Fig. 4, time window 1,2,3 be respectively TDD UL/DL frame structure #1, #4, #4 by eIMTA signal deployment.
Subframe 3,8,13,23 is configured as sub-frame of uplink, it is impossible to be used in transmits the measurement RS, subframe 18,28 is configured as downlink
Frame is used for transmission the measurement RS.For the given port RS, the solution of the present invention ensures that it can be sent in subframe 18
(if for example corresponding candidate's subframes of scheme-using fixed candidate's subframes are subframes 3,13,23, then the given port RS
It cannot be sent always in time window 1,2,3).
Embodiment 4
Embodiment 4 is the schematic diagram for measuring RS pattern, as shown in Fig. 5.In attached drawing 5, the grid of oblique line mark is first
The lattice of the subframe that subframe is concentrated, number filling is the RE of 1 port RS, and the number is the index of the corresponding port RS.
In embodiment 4,1 time window is made of N number of continuous subframes, and the N is greater than 1 positive integer.In the present invention
The measurement RS includes the M port RS, and the RE in 1 subframe is configured to 8 ports RS, and the M is E1 times of 8.For 1
The given port RS, appears in each time window on the downlink subframe in 1 candidate's subframes.First subframe collection is at each
It all include E1 subframe in time window, the E1 is greater than 1 and is not more than the positive integer of N.8 ports RS account in subframe
Pattern is pattern of 8 ports CSI-RS in subframe, wherein pattern of 1 port RS in subframe is 1
Pattern of the port CSI-RS in subframe.It is identical for being used for the RE of the measurement RS in the E1 subframe.
Embodiment 5
Embodiment 5 is the structural block diagram for the processing unit in base station, as shown in Fig. 6.In attached drawing 6, processing unit
300 are made of sending module 301, sending module 302 and receiving module 303.
Sending module 301 indicates the first subframe collection for sending the first signaling；Sending module 302 is used in given carrier wave
On, measurement RS is sent on the downlink subframe that the first subframe is concentrated；Receiving module 303 is for receiving target CSI, the target
The reference resources of CSI include the measurement RS.
In embodiment 5, the given carrier wave is made of continuous time window in the time domain, and 1 time window is by N number of continuous son
Frame composition, the N are greater than 1 positive integer.The measurement RS includes the M port RS, and the port the M RS is in 1 subframe
At most there is the M1 port RS, the M is greater than 8 positive integer, and the M1 is less than the positive integer of the M.It is given for 1
The port RS is appeared in each time window on the downlink subframe in S candidate's subframes, and the S candidate's subframes belong to
One subframe collection.The S candidate's subframes in the window in time window position be time-varying, the S is less than the just whole of the N
Number.
As the sub- embodiment 1 of embodiment 5, sending module 301 is also used to send physical layer signaling and indicates the given load
The downlink subframe of the wave within the configuration period of the physical layer signaling.
As the sub- embodiment 2 of embodiment 5, the S is 1.
Embodiment 6
Embodiment 6 is the structural block diagram for the processing unit in UE, as shown in Fig. 7.In attached drawing 7, processing unit 400
By receiving module 401, receiving module 402 and sending module 403 are formed.
Receiving module 401 determines the first subframe collection for receiving the first signaling；Receiving module 402 is used in given carrier wave
On, measurement RS is received on the downlink subframe that the first subframe is concentrated；Sending module 403 is for sending target CSI, the target
The reference resources of CSI include the measurement RS.
In embodiment 6, the given carrier wave is made of continuous time window in the time domain, and 1 time window is by N number of continuous son
Frame composition, the N are greater than 1 positive integer.The measurement RS includes the M port RS, and the port the M RS is in 1 subframe
At most there is the M1 port RS, the M is greater than 8 positive integer, and the M1 is less than the positive integer of the M.It is given for 1
The port RS is appeared in each time window on the downlink subframe in S candidate's subframes, and the S candidate's subframes belong to
One subframe collection.The S candidate's subframes in the window in time window position be time-varying, the S is less than the just whole of the N
Number.
As the sub- embodiment 1 of embodiment 6, receiving module 401 is also used to receive physical layer signaling and determines the given load
The downlink subframe of the wave within the configuration period of the physical layer signaling.
As the sub- embodiment 2 of embodiment 6, the S candidate's subframes position and S in the window in first time window
There are mapping relations for position in the window in the second time window for a candidate's subframes.Second time window is after first time window
One time window.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be referred to by program
Related hardware is enabled to complete, described program can store in computer readable storage medium, such as read-only memory, hard disk or light
Disk etc..Optionally, one or more integrated circuit can be used also to realize in all or part of the steps of above-described embodiment.Phase
It answers, each modular unit in above-described embodiment, can be realized using example, in hardware, it can also be by the form of software function module
It realizes, the application is not limited to the combination of the software and hardware of any particular form.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification made, equivalent replacement, improve etc., it should be included in protection of the invention
Within the scope of.
Claims (12)
1. a kind of method in base station, wherein include the following steps:
Step A. sends the first signaling and indicates the first subframe collection；
Step B. sends measurement RS on given carrier wave on the downlink subframe that the first subframe is concentrated；
Step C. receives target CSI, and the reference resources of the target CSI include the measurement RS；
Wherein, the given carrier wave is made of continuous time window in the time domain, and 1 time window is made of N number of continuous subframes, institute
State the positive integer that N is greater than 1；The measurement RS includes the M port RS, and the port the M RS M1 at most occurs in 1 subframe
A port RS, the M are greater than 8 positive integer, and the M1 is less than the positive integer of the M；The port RS given for 1,
It is appeared in each time window on the downlink subframe in S candidate's subframes, the S candidate's subframes belong to the first subframe collection；
The S candidate's subframes in the window in time window position be time-varying, the S is less than the positive integer of the N.
2. the method according to claim 1, wherein the step A further includes following steps:
Described in step A0. transmission physical layer signaling indicates the given carrier wave within the configuration period of the physical layer signaling
Downlink subframe.
3. the method according to claim 1, wherein the S candidate's subframes are in the window in first time window
There are mapping relations for position in the window in the second time window for position and the S candidate's subframes；When second time window is first
Between first time window after window.
4. according to the method described in claim 3, it is characterized in that, the first subframe collection includes E1 in each time window
Subframe, and position I (0) in the window of the E1 subframe ..., I (E1-1) be it is fixed, the E1 is no more than the positive integer of N；
For first time window, position is (a (1)) I ... in the window of the S candidate's subframes, I (a (S)), for the second time window,
Position is I (mod (a (1)+k, E1)) in the window of the S candidate's subframes ..., I (mod (a (S)+k, E1))；The a
(1) ..., a (S) is greater than -1 and is less than the positive integer of E1；The k is less than 10 positive integer.
5. according to claim 1 to method described in any claim in 4, which is characterized in that the S is 1.
6. a kind of method in UE, wherein include the following steps:
Step A. receives the first signaling and determines the first subframe collection；
Step B. receives measurement RS on given carrier wave on the downlink subframe that the first subframe is concentrated；
Step C. sends target CSI, and the reference resources of the target CSI include the measurement RS；
Wherein, the given carrier wave is made of continuous time window in the time domain, and 1 time window is made of N number of continuous subframes, institute
State the positive integer that N is greater than 1；The measurement RS includes the M port RS, and the port the M RS M1 at most occurs in 1 subframe
A port RS, the M are greater than 8 positive integer, and the M1 is less than the positive integer of the M；The port RS given for 1,
It is appeared in each time window on the downlink subframe in S candidate's subframes, the S candidate's subframes belong to the first subframe collection；
The S candidate's subframes in the window in time window position be time-varying, the S is less than the positive integer of the N.
7. according to the method described in claim 6, it is characterized in that, the step A further includes following steps:
Described in step A0. reception physical layer signaling determines the given carrier wave within the configuration period of the physical layer signaling
Downlink subframe.
8. according to the method described in claim 6, it is characterized in that, the S candidate's subframes are in the window in first time window
There are mapping relations for position in the window in the second time window for position and the S candidate's subframes；When second time window is first
Between first time window after window.
9. according to the method described in claim 8, it is characterized in that, the first subframe collection includes E1 in each time window
Subframe, and position I (0) in the window of the E1 subframe ..., I (E1-1) be it is fixed, the E1 is no more than the positive integer of N；
For first time window, position is (a (1)) I ... in the window of the S candidate's subframes, I (a (S)), for the second time window,
Position is I (mod (a (1)+k, E1)) in the window of the S candidate's subframes ..., I (mod (a (S)+k, E1))；The a
(1) ..., a (S) is greater than -1 and is less than the positive integer of E1；The k is less than 10 positive integer.
10. the method according to any claim in claim 6 to 9, which is characterized in that the S is 1.
11. a kind of base station equipment, which is characterized in that the equipment includes:
First module: the first subframe collection is indicated for sending the first signaling；
Second module: for sending measurement RS on the downlink subframe that the first subframe is concentrated in given carrier wave；
Third module: for receiving target CSI, the reference resources of the target CSI include the measurement RS；
Wherein, the given carrier wave is made of continuous time window in the time domain, and 1 time window is made of N number of continuous subframes, institute
State the positive integer that N is greater than 1；The measurement RS includes the M port RS, and the port the M RS M1 at most occurs in 1 subframe
A port RS, the M are greater than 8 positive integer, and the M1 is less than the positive integer of the M；The port RS given for 1,
It is appeared in each time window on the downlink subframe in S candidate's subframes, the S candidate's subframes belong to the first subframe collection；
The S candidate's subframes in the window in time window position be time-varying, the S is less than the positive integer of the N.
12. a kind of user equipment, which is characterized in that the equipment includes:
First module: the first subframe collection is determined for receiving the first signaling；
Second module: for receiving measurement RS on the downlink subframe that the first subframe is concentrated in given carrier wave；
Third module: for sending target CSI, the reference resources of the target CSI include the measurement RS；
Wherein, the given carrier wave is made of continuous time window in the time domain, and 1 time window is made of N number of continuous subframes, institute
State the positive integer that N is greater than 1；The measurement RS includes the M port RS, and the port the M RS M1 at most occurs in 1 subframe
A port RS, the M are greater than 8 positive integer, and the M1 is less than the positive integer of the M；The port RS given for 1,
It is appeared in each time window on the downlink subframe in S candidate's subframes, the S candidate's subframes belong to the first subframe collection；
The S candidate's subframes in the window in time window position be time-varying, the S is less than the positive integer of the N.
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| CN201410304565.9A CN105227272B (en) | 2014-06-28 | 2014-06-28 | A kind of large scale MIMO transmission method and device |
| PCT/CN2015/082509 WO2015197021A1 (en) | 2014-06-28 | 2015-06-26 | Base station, massive mimo transmission method and device for ue |
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| CN107396442B (en) * | 2016-05-15 | 2019-10-01 | 上海朗帛通信技术有限公司 | A kind of method and apparatus in wireless communication |
| CN107529691B (en) * | 2016-06-22 | 2020-11-06 | 上海朗帛通信技术有限公司 | Method and device in wireless communication |
| CN111212378B (en) * | 2016-11-20 | 2021-03-09 | 上海朗帛通信技术有限公司 | Method and equipment in UE, base station and service center |
| CN108289020B (en) * | 2017-01-08 | 2020-11-06 | 上海朗帛通信技术有限公司 | Method and device used in UE and base station for wireless communication |
| CN114944857A (en) * | 2017-01-26 | 2022-08-26 | 上海朗帛通信技术有限公司 | Method and device for user equipment and base station for multi-antenna transmission |
| CN108702183B (en) * | 2017-03-18 | 2022-01-25 | 上海朗帛通信技术有限公司 | Method and device for multi-antenna transmission in base station and user equipment |
| CN106789826B (en) * | 2017-03-28 | 2020-07-28 | 北京佰才邦技术有限公司 | Downlink transmission detection method, base station and terminal |
| CN108111268B (en) * | 2017-05-05 | 2023-02-17 | 中兴通讯股份有限公司 | Transmission parameter processing method and device |
| CN110098903B (en) * | 2018-01-30 | 2021-10-22 | 普天信息技术有限公司 | Uplink pilot frequency transmission method, user equipment and base station |
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| US9094167B2 (en) * | 2009-02-02 | 2015-07-28 | Samsung Electronics Co., Ltd. | System and method for multi-user and multi-cell MIMO transmissions |
| CN103812619B (en) * | 2009-10-28 | 2017-06-13 | 华为技术有限公司 | Realize the method and device of channel measurement |
| CN102149082B (en) * | 2010-02-05 | 2014-11-26 | 中国移动通信集团公司 | Method, device and system for indicating terminal dedicated demodulation reference signal |
| EP2612451B1 (en) * | 2010-09-03 | 2016-09-28 | Fujitsu Limited | Channel state feedback for multi-cell mimo |
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| US9648588B2 (en) * | 2012-04-06 | 2017-05-09 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting/receiving channels in mobile communication system supporting massive MIMO |
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