CN105207756B - A kind of method and apparatus communicated using unlicensed spectrum - Google Patents
A kind of method and apparatus communicated using unlicensed spectrum Download PDFInfo
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- CN105207756B CN105207756B CN201410281084.0A CN201410281084A CN105207756B CN 105207756 B CN105207756 B CN 105207756B CN 201410281084 A CN201410281084 A CN 201410281084A CN 105207756 B CN105207756 B CN 105207756B
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Abstract
The invention proposes a kind of method and apparatus communicated using unlicensed spectrum.Base station sends downlink signaling in step 1 and indicates that the first subframe is sub-frame of uplink on first carrier, is on a second carrier downlink subframe or special subframe；Send downlink RS on a second carrier in step 2, the downlink RS at least occupies the RE that cannot be used for LTE CSI-RS and LTE CRS in the first subframe；Measurement CSI is received in step 2, the reference resources of the measurement CSI include the downlink RS.Wherein, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, and the scheduling carrier wave of the second carrier wave is first carrier.The solution of the present invention utilizes downlink RS of the downlink subframe that can not the be dispatched transmission for down channel measurement, improves the precision of down channel measurement, takes full advantage of the communication resource.In addition, the present invention reuses the configuration signal and pattern of the CSI-RS in LTE as far as possible, there is preferable compatibility.
Description
Technical field
The present invention relates to the schemes that unlicensed spectrum communication is utilized in wireless communication system, more particularly to based on LTE
The communication means for unlicensed spectrum (Unlicensed Spectrum) of (Long Term Evolution, long term evolution)
And device.
Background technique
Traditional 3GPP (3rd Generation Partner Project, third generation cooperative partner program) LTE system
In, data transmission can only occur on authorization frequency spectrum, however as increased dramatically for portfolio, especially in some urban areas,
Authorization frequency spectrum is likely difficult to meet the needs of portfolio.3GPP RAN's (Radio Access Network, wireless access network)
62 plenary sessions discuss a new research topic, i.e. the comprehensive research (RP-132085) of unlicensed spectrum, main purpose is to grind
Study carefully and disposed using the dependent (Non-standalone) of the LTE in unlicensed spectrum, so-called dependent refers to unauthorized
Communication on frequency spectrum wants and authorizes the serving cell on frequency spectrum associated.One intuitive method is to reuse existing system as far as possible
In CA (Carrier Aggregation, carrier wave polymerization) concept, that is, the serving cell conduct being deployed on authorization frequency spectrum
PCC (Primary Component Carrier, main carrier), is deployed in the serving cell in unlicensed spectrum as SCC
(Secondary Component Carrier, secondary carrier).In RAN#64 plenary session (seminar), in unlicensed spectrum
Communication is LAA (License Assisted Access, the access of authorization frequency spectrum auxiliary) by Uniform Name.For LAA, it is contemplated that
Uncontrollable/prediction of its interference level, physical layer control signaling is likely to only transmit on authorization frequency spectrum, and utilizes unauthorized
Spectrum transmissions physical layer data.
EIMTA (enhanced Interference Management is introduced in 3GPP R (Release, version) 12
Traffic Adaptation, the interference management service adaptation of enhancing) technology, i.e., for TDD (Time Division
Duplex, time division duplex) frame structure, tdd frame structure can be adjusted by dynamic signaling, possible tdd frame structure includes in LTE
#0~6 of definition totally 7 kinds of tdd frame structures.Dynamic signaling (eIMTA signaling) for configuring frame structure has the following characteristics that
Payload size is equal to the payload size of format 1C
It is placed on CSS (Common Search Space, public search space)
Every 3 bit indications, one group of tdd frame structure, eIMTA signaling at most configure 5 groups of tdd frame structures
By eIMTA-RNTI (Radio Network Temporary Identifier, wireless network fix tentatively identifier)
Mark
For LAA, physical layer control signaling is only transmitted on authorization frequency spectrum.If giving tune of the stator frame on authorization frequency spectrum
Degree carrier wave is arranged to sub-frame of uplink, and is set as on the scheduled carrier wave in unlicensed spectrum by (such as eIMTA signaling)
Downlink subframe or special subframe, then it is described to be scheduled to stator frame.
In view of the above-mentioned problems, the invention discloses a kind of method and apparatus communicated using unlicensed spectrum.
Summary of the invention
The invention discloses a kind of methods in base station, wherein includes the following steps:
Step A. send downlink signaling indicate the first subframe on first carrier be sub-frame of uplink, on a second carrier for
Downlink subframe or special subframe
Step B. sends downlink RS (Reference Signal, reference signal) on a second carrier, and the downlink RS exists
1 is at least occupied in first subframe cannot be used for LTE CSI (Channel Status Information, channel status letter
Breath)-RS and LTE CRS (Cell specific Reference Signal, cell specific reference signal) RE (Resource
Element, resource particle)
Step C. receives measurement CSI, and the reference resources (Reference Resource) of the measurement CSI include described
Downlink RS.
Wherein, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, and the scheduling of the second carrier wave carries
Wave is first carrier.
Second carrier wave cannot be scheduled in the first subframe, so all RE of the first subframe kind are ok for theoretically
It is used to send the downlink RS.The configuration of the scheduling carrier wave of second carrier wave is UE specific, the transmission for the measurement CSI
For UE (User Equipment, user equipment), the scheduling carrier wave of the second carrier wave is first carrier.As one embodiment,
The downlink signaling includes the SIB for configuring UL (Uplink, uplink)/DL (Downlink, downlink) frame structure of first carrier
The eIMTA signaling of the UL/DL frame structure of (System Information Block, system information block) 1 and the second carrier wave of configuration.
As one embodiment, the downlink signaling includes the eIMTA signaling and configuration second for configuring the UL/DL frame structure of first carrier
The eIMTA signaling of the UL/DL frame structure of carrier wave.As one embodiment, the downlink signaling includes configuration first carrier
HARQ (Hybrid Automatic Retransmission Request, hybrid automatic repeat-request) DL refers to UL/DL frame knot
The eIMTA signaling of the UL/DL frame structure of the second carrier wave of RRC signaling and configuration of structure, the HARQ DL refer to UL/DL frame structure
Downlink HARQ timing when eIMTA operation is carried out suitable for first carrier.
As one embodiment, the first subframe uses common CP (Cyclic Prefix, cyclic prefix), that is, includes OFDM
(Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) symbol 0~13, it is described to use
Include 3 component parts in the RE of LTE CSI-RS and LTE CRS:
Component part 1.OFDM symbol { 2,3 }
The RE that component part 2.DMRS (Demodulation Reference Signal, demodulated reference signal) is occupied
The RE that cannot be used for CSI-RS and DMRS in OFDM symbol belonging to component part 3.DMRS.
As one embodiment, the downlink RS also takes up the RE that can be used for CSI-RS/CRS.As one embodiment,
The downlink RS can occupy any RE in the second subframe.As one embodiment, first carrier is TDD carrier wave.As one
Embodiment, the measurement CSI include { PTI (Precoding Type Indicator, precoding type instruction), RI (Rank
Indication, order instruction), PMI (Precoding Matrix Indicator, pre-coding matrix instruction), CQI (Channel
Quality Indicator, channel status instruction) in one or more.
Specifically, according to an aspect of the present invention, which is characterized in that the downlink RS includes the K port RS respectively by K
A antenna port is sent, and the RE number that 1 port RS independently occupies in the first subframe is M.The K is in { 1,2,4,8 }
One, the M is greater than 1 positive integer.
1 port RS refers to the time domain that the RS that 1 antenna port is sent is occupied, frequency domain and code domain (if present) resource.
If identical RE is shared by the scheme of OCC (Orthogonal Covering Code, orthogonal covering codes) in multiple ports RS,
The RE number independently occupied refers to the RE occupied before each port RS OCC operation.The essence of above-mentioned aspect is, in the first son
In frame, distributes more traditional more resources of CSI-RS resource and measured for down channel, and then improve channel measurement quality.
Specifically, according to an aspect of the present invention, which is characterized in that the downlink RS includes 1 group of K in the first subframe
The extension RS of CSI-RS and 1 group of port K of port, the port K and the K antenna port correspond.
The pattern of the CSI-RS of { 1,2,4,8 } port is devised in LTE.The essence of above-mentioned aspect is, the downlink RS's
The extension RS of CSI-RS and 1 port of each port RS in the first subframe including 1 port in the port the K RS, 1
The extension RS of port includes M-1 RE.Compared to traditional CSI-RS, density of the downlink RS in the first subframe is higher, energy
Better meet the requirement of down channel measurement.
Specifically, above-mentioned aspect according to the present invention, which is characterized in that figure of the extension RS of the port K in subframe
Case is to be translated to obtain in the time domain by the pattern of the CSI-RS of the port M-1 kind K.
The essence of above-mentioned aspect is: pattern of the extension RS of the port K in affiliated OFDM symbol is existing M-1
The combination of the pattern of the CSI-RS of the kind port K.Above-mentioned aspect enables UE to reuse the existing channel based on CSI-RS as far as possible
Estimation scheme.
Specifically, according to an aspect of the present invention, which is characterized in that the extension RS of the port K occupies the first son
The RE for DMRS in frame.
Specifically, according to an aspect of the present invention, which is characterized in that the downlink RS only includes institute in the second subframe
State the CSI-RS of the port K.Second subframe is all downlink subframe on first carrier and the second carrier wave.
Second subframe can be scheduled, therefore can only use CSI-RS resource.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. sends high-level signaling and indicates the K and CSI-RS configuration index, the CSI-RS configuration index instruction
The pattern of the CSI-RS of the port K and the extension RS of the port K.
As one embodiment, the high-level signaling is CSI-RS-Config-r10 IEs (Information
Elements, information particle), the CSI-RS configuration index is resourceConfig-r10 IE therein.
The invention discloses a kind of methods in UE, wherein includes the following steps:
Step A. receive downlink signaling determine the first subframe on first carrier for sub-frame of uplink, on a second carrier for
Downlink subframe or special subframe
Step B. receives downlink RS on a second carrier, and the downlink RS at least occupies one not in the first subframe
It can be used for the RE of LTE CSI-RS and LTE CRS
Step C. sends measurement CSI, and the reference resources of the measurement CSI include the downlink RS.
Wherein, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, and the scheduling of the second carrier wave carries
Wave is first carrier.
As one embodiment, the measurement CSI includes one or more in { PTI, RI, PMI, CQI }.
Specifically, according to an aspect of the present invention, which is characterized in that the downlink RS includes the K port RS respectively by K
A antenna port is sent, and the RE number that 1 port RS independently occupies in the first subframe is M.The K is in { 1,2,4,8 }
One, the M is greater than 1 positive integer.
Specifically, according to an aspect of the present invention, which is characterized in that the downlink RS includes 1 group of K in the first subframe
The extension RS of CSI-RS and 1 group of port K of port, the port K and the K antenna port correspond.
Specifically, according to an aspect of the present invention, which is characterized in that figure of the extension RS of the port K in subframe
Case is to be translated to obtain in the time domain by the pattern of the CSI-RS of the port M-1 kind K.
Specifically, according to an aspect of the present invention, which is characterized in that the extension RS of the port K occupies the first son
The RE for DMRS in frame.
Specifically, according to an aspect of the present invention, which is characterized in that the downlink RS only includes institute in the second subframe
State the CSI-RS of the port K.Second subframe is all downlink subframe on first carrier and the second carrier wave.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. receives high-level signaling and determines the K and CSI-RS configuration index, the CSI-RS configuration index instruction
The pattern of the CSI-RS of the port K and the extension RS of the port K.
The invention discloses a kind of base station equipments, which is characterized in that the equipment includes:
First module: it indicates that the first subframe is sub-frame of uplink on first carrier for sending downlink signaling, is carried second
It is downlink subframe or special subframe on wave
Second module: for sending downlink RS on a second carrier, the downlink RS is at least occupied in the first subframe
One cannot be used for the RE of LTE CSI-RS and LTE CRS
Third module: for receiving measurement CSI, the reference resources of the measurement CSI include the downlink RS.
Wherein, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, and the scheduling of the second carrier wave carries
Wave is first carrier.The downlink RS includes that the K port RS is sent by K antenna port respectively, and 1 port RS is first
The RE number independently occupied in subframe is M.The K is one in { 1,2,4,8 }, and the M is greater than 1 positive integer.Under described
The extension RS of CSI-RS and 1 group K port of the row RS in the first subframe including 1 group of port K, the port K and the K antenna
Port corresponds.
As one embodiment, the first module of above equipment is also used to: being sent high-level signaling and is indicated the K and CSI-RS
Configuration index, the CSI-RS configuration index indicate the pattern of the CSI-RS of the port K and the extension RS of the port K.
The invention discloses a kind of user equipmenies, which is characterized in that the equipment includes:
First module: it determines that the first subframe is sub-frame of uplink on first carrier for receiving downlink signaling, is carried second
It is downlink subframe or special subframe on wave
Second module: for receiving downlink RS on a second carrier, the downlink RS is at least occupied in the first subframe
One cannot be used for the RE of LTE CSI-RS and LTE CRS
Third module: for sending measurement CSI, the reference resources of the measurement CSI include the downlink RS.
Wherein, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, and the scheduling of the second carrier wave carries
Wave is first carrier.The downlink RS includes that the K port RS is sent by K antenna port respectively, and 1 port RS is first
The RE number independently occupied in subframe is M.The K is one in { 1,2,4,8 }, and the M is greater than 1 positive integer.Under described
The extension RS of CSI-RS and 1 group K port of the row RS in the first subframe including 1 group of port K, the port K and the K antenna
Port corresponds.
As one embodiment, the first module of above equipment is also used to: being received high-level signaling and is determined the K and CSI-RS
Configuration index, the CSI-RS configuration index indicate the pattern of the CSI-RS of the port K and the extension RS of the port K.
For LAA, physical layer control signaling is only transmitted on authorization frequency spectrum.If giving tune of the stator frame on authorization frequency spectrum
Degree carrier wave is arranged to sub-frame of uplink, and is set as on the scheduled carrier wave in unlicensed spectrum by (such as eIMTA signaling)
Downlink subframe or special subframe, then it is described to be scheduled to stator frame.
Only being likely to occur when transmitting on authorizing frequency spectrum, in unlicensed spectrum for physical layer control signaling can not dispatch
This problem of downlink subframe, the solution of the present invention utilize downlink of the downlink subframe that can not the be dispatched transmission for down channel measurement
RS improves the precision of down channel measurement, takes full advantage of the communication resource.In addition, the present invention reuses in LTE as far as possible
The configuration signal and pattern of CSI-RS has preferable compatibility.
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 downlink RS according to an embodiment of the invention according in unlicensed spectrum and obtains measurement CSI
Flow chart；
Fig. 2 shows the candidate's subframes schematic diagrames of the first subframe according to an embodiment of the invention；
Fig. 3 shows the signal for the candidate RE that downlink RS according to an embodiment of the invention is occupied in the first subframe
Figure；
Fig. 4 shows the schematic diagram of the pattern of downlink RS according to an embodiment of the invention
Fig. 5 shows the structural block diagram of the processing unit in base station according to an embodiment of the invention；
Fig. 6 shows the structural block diagram of the processing unit in UE according to an embodiment of the invention；
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 illustrates the flow chart that measurement CSI is obtained according to the downlink RS in unlicensed spectrum, as shown in Fig. 1.
In attached drawing 1, base station N1 is the serving BS of UE U2, and the step S10, S20 identified in box F1 is optional step.
For base station N1, in step s 11, sends downlink signaling and indicate that the first subframe is uplink on first carrier
Frame is on a second carrier downlink subframe or special subframe；In step s 12, downlink RS is sent on a second carrier, it is described
Downlink RS at least occupies the RE that cannot be used for LTE CSI-RS and LTE CRS in the first subframe；In step s 13,
Measurement CSI is received, the reference resources of the measurement CSI include the downlink RS.
For UE U2, in the step s 21, receives downlink signaling and determines that the first subframe is sub-frame of uplink on first carrier,
It is on a second carrier downlink subframe or special subframe；In step S22, downlink RS is received on a second carrier, under described
Row RS at least occupies the RE that cannot be used for LTE CSI-RS and LTE CRS in the first subframe；In step S23, hair
Measurement CSI is sent, the reference resources of the measurement CSI include the downlink RS.
In embodiment 1, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, comes to UE U2
It says, the scheduling carrier wave of the second carrier wave is first carrier.The downlink RS includes that the K port RS is sent by K antenna port respectively,
The RE number that 1 port RS independently occupies in the first subframe is M.The K is one in { 1,2,4,8 }, and the M is big
In 1 positive integer.
As the sub- embodiment 1 of embodiment 1, base station N1 sends high-level signaling in step slo and indicates the K and CSI-RS
Configuration index；UE U2 receives high-level signaling in step S20 and determines the K and CSI-RS configuration index.Wherein, the CSI-
RS configuration index indicates the pattern of the CSI-RS of the port K and the extension RS of the port K.
As the sub- embodiment 2 of embodiment 1, the downlink RS includes the CSI-RS and 1 of 1 group of port K in the first subframe
The extension RS of the group port K, the port K and the K antenna port correspond.
As the sub- embodiment 3 of embodiment 1, the downlink signaling includes the UL/DL frame structure for configuring first carrier
The eIMTA signaling of the UL/DL frame structure of the second carrier wave of eIMTA signaling and configuration.
As the sub- embodiment 4 of embodiment 1, the downlink signaling includes the UL/DL frame structure for configuring first carrier
The SIB1 of the UL/DL frame structure of the second carrier wave of eIMTA signaling and configuration.
As the sub- embodiment 5 of embodiment 1, the M is 2.
Embodiment 2
Embodiment 2 illustrates the candidate's subframes schematic diagram of the first subframe in embodiment 1, as shown in Fig. 2.In attached drawing 2,
The first carrier of authorization frequency spectrum is deployed in using tdd frame structure, wherein D indicates that downlink subframe, U indicate that sub-frame of uplink, S indicate special
Different subframe, F indicate that on-fixed subframe-may be uplink or downlink subframe, and the grid of oblique line mark is the time of the first subframe
Select subframe.Second carrier wave is deployed in unlicensed spectrum, and scheduling carrier wave is first carrier.
Embodiment 3
Embodiment 3 illustrates the schematic diagram of the candidate RE occupied in the first subframe of downlink RS in embodiment 1, such as attached drawing
Shown in 3.In attached drawing 3, the grid of backslash mark is component part 1, and the grid of oblique line mark is component part 2, vertical line mark
Grid be component part 3.
In first subframe, it is impossible to be used in the RE of LTE CSI-RS and LTE CRS include 3 component parts:
Component part 1.OFDM symbol { 2,3 }-backslash mark grid.
The grid for the RE- oblique line mark that component part 2.DMRS is occupied.
What the RE- vertical line that cannot be used for CSI-RS and DMRS in OFDM symbol belonging to component part 3.DMRS identified
Grid.
Embodiment 4
Embodiment 4 illustrates the schematic diagram of the pattern of downlink RS, as shown in Fig. 4.In attached drawing 4, the grid of oblique line mark
It is the first subframe, the grid of backslash mark is the second subframe.The lattice of same numbers filling corresponds to the same port RS
RE, the lattice that overstriking collimation mark is known are the RE that traditional CSI-RS is occupied.
For base station, transmission high-level signaling first indicates the K and CSI-RS configuration index；Then downlink signaling is sent to refer to
Show that the first subframe is sub-frame of uplink on first carrier, is on a second carrier downlink subframe or special subframe；Then
On nd carrier send downlink RS, the downlink RS at least occupied in the first subframe one cannot be used for LTE CSI-RS and
The RE of LTE CRS；Measurement CSI is finally received, the reference resources of the measurement CSI include the downlink RS.
For UE, reception high-level signaling first determines the K and CSI-RS configuration index；Then downlink signaling is received to determine
First subframe is sub-frame of uplink on first carrier, is on a second carrier downlink subframe or special subframe；Then second
Downlink RS is received on carrier wave, the downlink RS at least occupies one in the first subframe cannot be used for LTE CSI-RS and LTE
The RE of CRS；Measurement CSI is finally sent, the reference resources of the measurement CSI include the downlink RS.
In embodiment 4, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, comes to UE U2
It says, the scheduling carrier wave of the second carrier wave is first carrier.The downlink RS includes 8 ports RS, is sent out respectively by 8 antenna ports
It send, the RE number that 1 port RS independently occupies in the first subframe is 2.The CSI-RS configuration index indicates the port K
CSI-RS and the port K extension RS pattern.It is (same that the RE that 8 ports RS occupy is filled with number 0~7 respectively
OCC is used on RE on one carrier wave adjacent-symbol)-include 1 group of 8 port CSI-RS (overstriking collimation mark know lattice) and
The extension RS of 1 group of 8 port.
As the sub- embodiment 1 of embodiment 4, the downlink RS only includes the CSI-RS of 8 port in the second subframe
(lattice that overstriking collimation mark is known).Second subframe is all downlink subframe on first carrier and the second carrier wave.
As the sub- embodiment 2 of embodiment 4, pattern of the extension RS of 8 port in subframe is by a kind of 8 port
The pattern of CSI-RS, which in the time domain translates, to be obtained.
Embodiment 5
Embodiment 5 illustrates the structural block diagram of the processing unit in a base station, as shown in Fig. 5.In attached drawing 5, base station
Processing unit 300 is made of sending module 301, sending module 302 and receiving module 303.
Sending module 301 indicates that the first subframe is sub-frame of uplink on first carrier for sending downlink signaling, second
It is downlink subframe or special subframe on carrier wave；Sending module 302 for sending downlink RS, the downlink RS on a second carrier
The RE that cannot be used for LTE CSI-RS and LTE CRS is at least occupied in the first subframe；Receiving module 303 is for receiving
CSI is measured, the reference resources of the measurement CSI include the downlink RS.
In embodiment 5, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, the second carrier wave
Scheduling carrier wave is first carrier.The downlink RS includes that the K port RS is sent by K antenna port respectively, 1 port RS
The RE number independently occupied in the first subframe is M.The K is one in { 1,2,4,8 }, and the M is greater than 1 positive integer.
The extension RS of CSI-RS and 1 group K port of the downlink RS in the first subframe including 1 group of port K, the port K and the K
A antenna port corresponds.The downlink RS only includes the CSI-RS of the port K in the second subframe.Second subframe is
It is all downlink subframe on one carrier wave and the second carrier wave.
As the sub- embodiment 1 of embodiment 5, the downlink signaling includes the UL/DL frame structure for configuring first carrier
EIMTA signaling.Second carrier wave uses full downlink frame structure.
Embodiment 6
Embodiment 6 illustrates the structural block diagram of the processing unit in a UE, as shown in Fig. 6.In attached drawing 6, UE processing
Device 400 is made of receiving module 401, receiving module 402 and sending module 403.
Receiving module 401 determines that the first subframe is sub-frame of uplink on first carrier for receiving downlink signaling, second
It is downlink subframe or special subframe on carrier wave；Receiving module 402 for receiving downlink RS, the downlink RS on a second carrier
The RE that cannot be used for LTE CSI-RS and LTE CRS is at least occupied in the first subframe；Sending module 403 is for sending
CSI is measured, the reference resources of the measurement CSI include the downlink RS.
In embodiment 6, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, the second carrier wave
Scheduling carrier wave is first carrier.The downlink RS includes that the K port RS is sent by K antenna port respectively, 1 port RS
The RE number independently occupied in the first subframe is M.The K is one in { 1,2,4,8 }, and the M is greater than 1 positive integer.
The extension RS of CSI-RS and 1 group K port of the downlink RS in the first subframe including 1 group of port K, the port K and the K
A antenna port corresponds.The downlink RS only includes the CSI-RS of the port K in the second subframe.Second subframe is
It is all downlink subframe on one carrier wave and the second carrier wave.
As the sub- embodiment 1 of embodiment 6, the downlink signaling includes the UL/DL frame structure for configuring first carrier
The eIMTA signaling of the UL/DL frame structure of the second carrier wave of SIB1 and configuration.
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 (14)
1. a kind of method in base station, wherein include the following steps:
Step A. sends downlink signaling and indicates that the first subframe is sub-frame of uplink on first carrier, is on a second carrier downlink
Subframe or special subframe；
Step B. is sent downlink reference signal (RS) on a second carrier, and the downlink RS is at least occupied in the first subframe
One cannot be used for the RE of LTE CSI-RS and LTE CRS；
Step C. receives measurement CSI, and the reference resources of the measurement CSI include the downlink RS；
Wherein, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, and the scheduling carrier wave of the second carrier wave is
First carrier.
2. the method according to claim 1, wherein the downlink RS includes the K port RS, respectively by K day
Line end mouth is sent, and resource particle (RE) number that 1 port RS independently occupies in the first subframe is M；The K be 1,2,
4,8 } one in, the M is greater than 1 positive integer.
3. according to the method described in claim 2, it is characterized in that, the downlink RS includes 1 group of port K in the first subframe
The extension RS of channel state information reference signals (CSI-RS) and 1 group of port K, the port K and the K antenna port are one by one
It is corresponding.
4. according to the method described in claim 3, it is characterized in that, pattern of the extension RS of the port K in subframe be by
The pattern of the CSI-RS of the port M-1 kind K translates in the time domain to be obtained.
5. the method according to claim 3 or 4, which is characterized in that the downlink RS only includes the K in the second subframe
The CSI-RS of port；Second subframe is all downlink subframe on first carrier and the second carrier wave.
6. according to the method described in claim 5, it is characterized in that, the step A further includes following steps:
Step A1. sends high-level signaling and indicates that the K and CSI-RS configuration index, the CSI-RS configuration index indicate the K
The pattern of the CSI-RS of port and the extension RS of the port K.
7. a kind of method in UE, wherein include the following steps:
Step A. receives downlink signaling and determines that the first subframe is sub-frame of uplink on first carrier, is on a second carrier downlink
Subframe or special subframe；
Step B. receives downlink RS on a second carrier, and the downlink RS at least occupies one in the first subframe and cannot use
In the RE of LTE CSI-RS and LTE Cell specific Reference Signal (CRS)；
Step C. sends measurement CSI, and the reference resources of the measurement CSI include the downlink RS；
Wherein, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, and the scheduling carrier wave of the second carrier wave is
First carrier.
8. the method according to the description of claim 7 is characterized in that the downlink RS includes the K port RS, respectively by K day
Line end mouth is sent, and the RE number that 1 port RS independently occupies in the first subframe is M；The K is one in { 1,2,4,8 }
A, the M is greater than 1 positive integer.
9. according to the method described in claim 8, it is characterized in that, the downlink RS includes 1 group of port K in the first subframe
The extension RS of CSI-RS and 1 group of port K, the port K and the K antenna port correspond.
10. according to the method described in claim 9, it is characterized in that, pattern of the extension RS of the port K in subframe be by
The pattern of the CSI-RS of the port M-1 kind K translates in the time domain to be obtained.
11. method according to claim 9 or 10, which is characterized in that the downlink RS only includes institute in the second subframe
State the CSI-RS of the port K；Second subframe is all downlink subframe on first carrier and the second carrier wave.
12. according to the method for claim 11, which is characterized in that the step A further includes following steps:
Step A1. receives high-level signaling and determines that the K and CSI-RS configuration index, the CSI-RS configuration index indicate the K
The pattern of the CSI-RS of port and the extension RS of the port K.
13. a kind of base station equipment, which is characterized in that the equipment includes:
First module: indicate that the first subframe is sub-frame of uplink on first carrier for sending downlink signaling, on a second carrier
For downlink subframe or special subframe；
Second module: for sending downlink RS on a second carrier, the downlink RS at least occupies one in the first subframe
It cannot be used for the RE of LTE CSI-RS and LTE CRS；
Third module: for receiving measurement CSI, the reference resources of the measurement CSI include the downlink RS；
Wherein, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, and the scheduling carrier wave of the second carrier wave is
First carrier；The downlink RS includes the K port RS, is sent respectively by K antenna port, and 1 port RS is in the first son
The RE number independently occupied in frame is M；The K is one in { 1,2,4,8 }, and the M is greater than 1 positive integer；The downlink
The extension RS of CSI-RS and 1 group K port of the RS in the first subframe including 1 group of port K, the port K and the K antenna end
Mouth corresponds.
14. a kind of user equipment, which is characterized in that the equipment includes:
First module: determine that the first subframe is sub-frame of uplink on first carrier for receiving downlink signaling, on a second carrier
For downlink subframe or special subframe；
Second module: for receiving downlink RS on a second carrier, the downlink RS at least occupies one in the first subframe
It cannot be used for the RE of LTE CSI-RS and LTE CRS；
Third module: for sending measurement CSI, the reference resources of the measurement CSI include the downlink RS；
Wherein, first carrier is deployed in authorization frequency spectrum, and the second carrier wave is deployed in unlicensed spectrum, and the scheduling carrier wave of the second carrier wave is
First carrier；The downlink RS includes the K port RS, is sent respectively by K antenna port, and 1 port RS is in the first son
The RE number independently occupied in frame is M；The K is one in { 1,2,4,8 }, and the M is greater than 1 positive integer；The downlink
The extension RS of CSI-RS and 1 group K port of the RS in the first subframe including 1 group of port K, the port K and the K antenna end
Mouth corresponds.
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| WO2018058365A1 (en) * | 2016-09-28 | 2018-04-05 | 华为技术有限公司 | Network access authorization method, and related device and system |
| CN110972327B (en) * | 2018-09-28 | 2022-03-11 | 维沃移动通信有限公司 | Signal transmission method and communication equipment based on unauthorized frequency band |
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| CN109818726A (en) | 2019-05-28 |
| CN105207756A (en) | 2015-12-30 |
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