CN105722232B - A kind of method and apparatus of LAA transmission - Google Patents
A kind of method and apparatus of LAA transmission Download PDFInfo
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Abstract
The invention proposes the method and apparatus for LAA transmission in a kind of UE, base station.UE receives the first signaling, the transmission of uplink RS of the first signaling triggering on first carrier in the first subframe in step 1；It is executed on the first time slot of first carrier in step 2 and listens to operation to determine whether to send uplink RS, if it is determined that send uplink RS, the second time slot on first carrier sends the first RS, and otherwise the second time slot on first carrier keeps zero to send power.Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum.First RS occupies K1 wideband symbol in the time domain, and the K1 is positive integer.Second time slot is shown by the first signaling by the first signaling implicit instruction or the second time slot and is indicated.The solution of the present invention enables base station dynamic configuration for the time-domain resource of uplink RS transmission to ensure that base station timely obtains the CSI of LAA carrier wave as far as possible.In addition, the present invention reuses existing SRS scheme as far as possible, there is good 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.62 plenary sessions of 3GPP RAN discuss a new research topic, i.e.,
The comprehensive research (RP-132085) of unlicensed spectrum, main purpose is the dependent of LTE of the research and utilization in unlicensed spectrum
(Non-standalone) it disposes, so-called dependent refers to that the communication in unlicensed spectrum wants and authorize the service on frequency spectrum small
Area is associated.One intuitive method is that (Carrier Aggregation, carrier wave are poly- by the CA that reuses in existing system as far as possible
Close) concept, that is, be deployed in authorization frequency spectrum on serving cell as Pcell (Primary Cell, main plot), be deployed in non-
Authorize the serving cell on frequency spectrum as Scell (Secondary Cell, secondary cell).For unlicensed spectrum, it is contemplated that its
Uncontrollable/prediction of interference level, LTE may use LBT in unlicensed spectrum, and (Listen Before Talk, is first detectd
Sent after listening) to avoid interference.LBT, that is, base station or UE (User Equipment, user equipment) before sending signal first
The reception power in unlicensed spectrum is monitored, is not interfered in the unlicensed spectrum if determined according to the reception power
Source then sends signal in the unlicensed spectrum, does not otherwise send signal.It is non-to award in RAN#64 plenary session (seminar)
It is LAA (License Assisted Access, the access of authorization frequency spectrum auxiliary) that the communication on frequency spectrum, which is weighed, by Uniform Name.
Unlicensed spectrum may work in TDD (Time Division Duplex, time division duplex) mode, i.e., unauthorized frequency
Spectrum is used for transmission downlink and uplink wireless signal.And in up-link wireless signal, SRS (Sounding Reference Signal,
Interception reference signal) it plays key player-SRS and can indicate CSI (the Channel Status of LAA carrier wave
Indicator)。
In traditional LTA, position of the SRS in subframe be it is fixed, that is, be located at subframe the last one SC-FDMA
(Single Carrier Frequency Division Multiplexing Access, single carrier frequency division multiplexing) symbol (or
Most latter two SC-FDMA symbol of person's special subframe).Further, SRS, which (may occupy) subframe, is configured by high-level signaling
's.
If in LAA transmission, the side UE will also execute LBT operation, then traditional SRS scheme is likely encountered problem:
- target UE is likely to detect the uplink signal of other UE when executing LBT before scheduled SRS symbol, i.e.,
The result that operation is listened in LBT is interfered
The SRS subframe of the semi-static instruction of-is likely to not be available (base station cannot receive or UE cannot be sent), so that
UE can not report CSI in time.
In view of the above-mentioned problems, the invention discloses a kind of method and apparatus of LAA transmission.
Summary of the invention
The invention discloses a kind of methods in the UE that unlicensed spectrum communicates, wherein includes the following steps:
Step A. receives the first signaling, the transmission of uplink RS of the first signaling triggering on first carrier in the first subframe
Step B. is executed on the first time slot of first carrier listens to operation to determine whether to send uplink RS
(Reference Signal, reference signal).If it is determined that sending uplink RS, the second time slot on first carrier sends first
RS, otherwise the second time slot on first carrier keeps zero to send power.
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum.First RS is occupied in the time domain
K1 wideband symbol, the K1 are positive integers.Subframe belonging to second time slot is n-th of subframe after the first subframe, the n
It is the positive integer of pre-determining；Or second time slot by the first signaling show indicate.Subframe belonging to second time slot is not high
Layer signaling keeps for the uplink RS.
The uplink RS refers to be sent to base station by UE and RS sequence and radio resource mapping (Resource
It Mapping) is pre-determining (i.e. UE and base station are known in advance) wireless signal.As one embodiment, the uplink RS
It is PRACH (Physical Random Access Channel, Physical Random Access Channel) pilot tone (Preamble).
It does not include the bit for being used to indicate the second time slot in first signaling as one embodiment.As a reality
Example is applied, position of second time slot in subframe is that pre-determining is either configured by high-level signaling.
Explicit (Explicitly) instruction refers to include the bit for being used to indicate the second time slot in the first signaling.As
Show one embodiment of instruction, subframe belonging to the second time slot is indicated by the first signaling, and the second time slot is in subframe
Position is that pre-determining is either configured by high-level signaling.As one embodiment of display instruction, belonging to the second time slot
Subframe is n-th of subframe after the first subframe, and the n is the positive integer of pre-determining, and position of second time slot in subframe is
By the instruction of the first signaling.
As one embodiment, the wideband symbol is SC-FDMA symbol.As one embodiment, the wideband symbol
It is OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) symbol.As one
Embodiment, the K1 are one in { 1,2,4,8 }.As one embodiment, the base station configuration first carrier is common CP,
The duration of the wideband symbol be 2192Ts (wideband symbol except first wideband symbol in subframe) or
2208Ts (first wideband symbol in subframe), the Ts are 1/30720ms (millisecond, milliseconds).
As one embodiment, the process for listening to operation is as follows, if what the UE was detected in the first slot
Received signal power is less than (fixed or be configurable) given threshold value, then the UE, which is determined, sends uplink RS, otherwise really
It is fixed not send uplink RS.
The essence of the above method is that the time domain that UE can be dynamically determined for sending uplink RS (according to the instruction of base station) provides
Source, and trigger the transmission of UE.It is compared with traditional A (A periodic, aperiodic)-SRS, the time domain for sending uplink RS provides
Source can appear in except the candidate resource of (if present) high-level signaling configuration.The above method ensures that UE is timely sent out as far as possible
Uplink SRS is sent, requirement of the base station side to the time performance of CSI is met.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A0. receives the second signaling and determines position of the given information bit group in L1 group of information bits.
Wherein, the first signaling includes the L1 group of information bits, and the given information bit group triggers the upper of the UE
The transmission of row RS.Each group of information bits includes L2 bit, and the L1 is greater than 1 positive integer, and the L2 is just whole
Number, the second signaling is high-level signaling.
As one embodiment, interval between the first time slot and the second time slot be less than 20us (microsecond, it is micro-
Second), i.e., the described UE has executed described listen to and has operated later the first RS of transmission immediately or zero transmission power is kept (to abandon sending
First RS).As one embodiment, each corresponding UE of the group of information bits.As one embodiment, the first time slot
Initial time is located at the initial time of subframe.As one embodiment, the L2 is 1, and the L2 bit is used to indicate accordingly
UE whether send uplink RS.As one embodiment, the L2 is 2, and whether the L2 bit is used to indicate corresponding UE
Send uplink RS and (if transmission) described K1.
As one embodiment, except the SRS subframe that subframe belonging to the second time slot, which is base station, to be configured by high-level signaling
Subframe.
Specifically, according to an aspect of the present invention, which is characterized in that the step B further includes following steps:
Step B0. listens to operation according to and determines whether to send ascending physical signal layer data, if it is determined that sends ascending
Layer data is managed, sends the first physical layer data in the time interval between the first time slot and the second time slot on first carrier,
Otherwise zero is kept to send power in the time interval.
Wherein, the first signaling is DCI (the Downlink Control for dispatching uplink physical layer data
Information, Downlink Control Information), the K1 is 1, and the second time slot is the last one of subframe scheduled in the first signaling
Wideband symbol.
As one embodiment, the time interval includes positive integer wideband symbol, the uplink RS and the uplink
The transmission decision criteria of physical layer data is identical (such as identical received signal power threshold value).As one embodiment,
The initial time of first time slot is located at the initial time of subframe.As one embodiment, the format of the first signaling is DCI format 0
Either DCI format 4 or the DCI for being used to dispatch LAA carrier wave newly defined.
As one embodiment, except the SRS subframe that subframe belonging to the second time slot, which is base station, to be configured by high-level signaling
Subframe.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. receives third signaling and determines the K1, and third signaling is high-level signaling.
Specifically, according to an aspect of the present invention, which is characterized in that pattern of the first RS in wideband symbol reuses
The RS sequence of pattern and SRS of the SRS in wideband symbol.
As one embodiment, the parameter of the first RS is configured by high-level signaling, and the parameter includes SRS-
All or part of information in ConfigAp-r10IE (Information Element, information unit).
As one embodiment, the K1 is greater than 1, the first RS with OCC (Orthogonal Covering Code, it is orthogonal
Overlay code) mode will be in the mapped extension in symbol to the K1 wideband symbol.
The invention discloses a kind of methods in the base station that unlicensed spectrum communicates, wherein includes the following steps:
Step A. sends the first signaling, the transmission of uplink RS of the first signaling triggering on first carrier in the first subframe
Step B. detects the uplink RS triggered by the first signaling on the second time slot of first carrier, wherein the first RS pairs
Answer the first UE.
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum.First RS is occupied in the time domain
K1 wideband symbol, the K1 are positive integers.Subframe belonging to second time slot is n-th of subframe after the first subframe, the n
It is the positive integer of pre-determining；Or second time slot by the first signaling show indicate.Subframe belonging to second time slot is not high
Layer signaling keeps for the uplink RS.
The implicit instruction refers to do not include the bit for being used to indicate the second time slot in the first signaling.The explicit instruction is
Refer to include the bit for being used to indicate the second time slot in the first signaling.
Corresponding first UE of first RS refers to that, if detecting the first RS, the first RS is sent by the first UE.As one
A embodiment, multiple (frequency division multiplexing or code division multiplexing) target RS are detected in the base station on the first slot, wherein (if deposited
) the first RS be by the first UE send.
As one embodiment, the first signaling is sent on the carrier wave for being deployed in authorization frequency spectrum.
As one embodiment, the first signaling only triggers the first RS.As one embodiment, the triggering of the first signaling includes the
Multiple RS including one RS.
As one embodiment of the step B, triggered according to the first signaling all (one or more of the base station
It is a) target RS execution channel estimation, if calculated channel capacity is higher than specific threshold, the base station determines respective objects
RS is sent by UE and adopts the CSI of corresponding first carrier, and otherwise the base station determines that respective objects RS is not sent i.e. by UE
Abandon the CSI of corresponding first carrier.
As one embodiment of the step B, the base station determines the touching of the first signaling according to the UE response received
The RS being actually transmitted in all (one or more) target RS of hair, executes channel for the RS being actually transmitted and estimates
Meter obtains the CSI of first carrier.The UE response is 1 bit, is used to indicate whether to execute the first signaling scheduling.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A0. sends the uplink RS scheduling information bit group of each UE in the second signaling instruction target UE group at L1
Position in group of information bits.
Wherein, the second signaling indicates given position of the group of information bits in L1 group of information bits, the target UE group
Including at least the first UE, the target UE group includes up to L1 UE, and the first signaling includes the L1 group of information bits, described
Given information bit group triggers the transmission of the uplink RS of the first UE.Each group of information bits includes L2 bit, the L1
It is greater than 1 positive integer, the L2 is positive integer, and the second signaling is high-level signaling.
As one embodiment, except the SRS subframe that subframe belonging to the second time slot, which is base station, to be configured by high-level signaling
Subframe.
Specifically, according to an aspect of the present invention, which is characterized in that the step B further includes following steps:
Step B0. detects the first physics in the time interval between the first time slot and the second time slot on first carrier
Layer data, corresponding first UE of the first physical layer data.
Wherein, the first signaling is the DCI for dispatching uplink physical layer data, and the K1 is 1, and the second time slot is the first letter
Enable the last one wideband symbol of scheduled subframe.
As one embodiment, except the SRS subframe that subframe belonging to the second time slot, which is base station, to be configured by high-level signaling
Subframe.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. sends third signaling and indicates the K1, and third signaling is high-level signaling.
As one embodiment, third signaling is the public rrc layer signaling of cell.
Specifically, according to an aspect of the present invention, which is characterized in that pattern of the first RS in wideband symbol reuses
The RS sequence of pattern and SRS of the SRS in wideband symbol.
As one embodiment, the K1 is greater than 1, and the first RS is in a manner of OCC by the mapped extension in symbol described in
On K1 wideband symbol.
The invention discloses a kind of user equipmenies for communicating in unlicensed spectrum, which is characterized in that the equipment includes:
First module: for receiving the first signaling in the first subframe, the first signaling triggers the uplink RS on first carrier
Transmission
Second module: operation is listened to determine whether to send uplink RS for executing on the first time slot of first carrier.
If it is determined that sending uplink RS, the second time slot on first carrier sends the first RS, otherwise in second on first carrier
Gap keeps zero to send power.
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum.First RS is occupied in the time domain
K1 wideband symbol, the K1 are positive integers.Subframe belonging to second time slot is n-th of subframe after the first subframe, the n
It is the positive integer of pre-determining；Or second time slot by the first signaling show indicate.Subframe belonging to second time slot is not high
Layer signaling keeps for the uplink RS.
As one embodiment, the first module is also used at least one of:
- receives the second signaling and determines position of the given information bit group in L1 group of information bits.
- receives third signaling and determines the K1, and third signaling is high-level signaling.
Wherein, the first signaling includes the L1 group of information bits, and the given information bit group triggers the upper of the UE
The transmission of row RS.Each group of information bits includes L2 bit, and the L1 is greater than 1 positive integer, and the L2 is just whole
Number, the second signaling is high-level signaling.
As one embodiment, the second module is also used to:
- listens to operation according to and determines whether to send ascending physical signal layer data, if it is determined that sends the ascending physical signal number of plies
According to sending the first physical layer data in the time interval between the first time slot and the second time slot on first carrier, otherwise exist
Zero is kept to send power in the time interval.
Wherein, the first signaling is the DCI for dispatching uplink physical layer data, and the K1 is 1, and the second time slot is the first letter
Enable the last one wideband symbol of scheduled subframe.
As one embodiment, above-mentioned user equipment is characterized in that, pattern of the first RS in wideband symbol reuses SRS
The RS sequence of pattern and SRS in wideband symbol.
The invention discloses a kind of base station equipments for communicating in unlicensed spectrum, which is characterized in that the equipment includes:
First module: for sending the first signaling in the first subframe, the first signaling triggers the uplink RS on first carrier
Transmission
Second module: for detecting the uplink RS triggered by the first signaling on the second time slot of first carrier, wherein the
One RS corresponds to the first UE.
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum.First RS is occupied in the time domain
K1 wideband symbol, the K1 are positive integers.Subframe belonging to second time slot is n-th of subframe after the first subframe, the n
It is the positive integer of pre-determining；Or second time slot by the first signaling show indicate.Subframe belonging to second time slot is not high
Layer signaling keeps for the uplink RS.
As one embodiment, the first module is also used at least one of:
- sends the uplink RS scheduling information bit group of each UE in the second signaling instruction target UE group in L1 information ratio
Position in special group.
- sends third signaling and indicates the K1, and third signaling is high-level signaling.
Wherein, the second signaling indicates given position of the group of information bits in L1 group of information bits, the target UE group
Including at least the first UE, the target UE group includes up to L1 UE, and the first signaling includes the L1 group of information bits, described
Given information bit group triggers the transmission of the uplink RS of the first UE.Each group of information bits includes L2 bit, the L1
It is greater than 1 positive integer, the L2 is positive integer, and the second signaling is high-level signaling.
As one embodiment, the second module is also used to:
- detects the first physical layer data in the time interval between the first time slot and the second time slot on first carrier,
First physical layer data corresponds to the first UE.
Wherein, the first signaling is the DCI for dispatching uplink physical layer data, and the K1 is 1, and the second time slot is the first letter
Enable the last one wideband symbol of scheduled subframe.
As one embodiment, above-mentioned base station equipment is characterized in that, pattern of the first RS in wideband symbol reuses SRS
The RS sequence of pattern and SRS in wideband symbol.
The LAA communication that LBT operation is executed for the side UE, operates for listening to caused by traditional SRS scheme by ascending
The problem of interference and UE for managing layer data can not report CSI in time, the solution of the present invention enables base station dynamic configuration to use
In the time-domain resource of uplink RS transmission.As one embodiment, the solution of the present invention supports multiple continuous wideband symbols to be used for
Uplink RS is transmitted, so that the distribution of a time-domain resource can accommodate the uplink RS that more UE are sent.The solution of the present invention is true
Protect the CSI that base station timely obtains LAA carrier wave as far as possible.In addition, the present invention reuses existing SRS scheme as far as possible, have good
Good 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 transmission flow figure of uplink RS according to an embodiment of the invention；
Fig. 2 shows uplink RS according to an embodiment of the invention to dispatch timing diagram；
Fig. 3 shows the transmission time sequence figure of uplink RS and physical layer data according to an embodiment of the invention；
Fig. 4 shows the structure chart of uplink RS according to an embodiment of the invention；
Fig. 5 shows the structure chart of the first signaling 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；
Fig. 7 shows the structural block diagram of the processing unit in base station 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 transmission flow figure of uplink RS, as shown in Fig. 1.In attached drawing 1, base station N1 is the clothes of UE U2
The maintenance base station for cell of being engaged in is wherein optional step the step of mark in box F1.
For base station N1, the first signaling is sent in the first subframe in step s 11, the first signaling triggers on first carrier
Uplink RS transmission；The uplink RS triggered by the first signaling is detected on the second time slot of first carrier in step s 12,
In the first RS corresponding UE U2.
For UE U2, the first signaling is received in the first subframe in the step s 21, the first signaling triggers on first carrier
Uplink RS transmission；It is executed on the first time slot of first carrier in step S221 and listens to operation to determine whether in transmission
Row RS, if it is determined that send uplink RS, the second time slot in step S222 on first carrier sends the first RS, otherwise in step
The second time slot in rapid S223 on first carrier keeps zero to send power.
In embodiment 1, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum.First RS is in time domain
Upper K1 wideband symbol of occupancy, the K1 is positive integer.Subframe belonging to second time slot is n-th of son after the first subframe
Frame, the n are the positive integers of pre-determining；Or second time slot by the first signaling show indicate.Son belonging to second time slot
Frame does not keep for the uplink RS by high-level signaling.
As the sub- embodiment 1 of embodiment 1, base station N1 sends third signaling in step slo and indicates the K1.UE U2
Third signaling is received in step S20 determines the K1.Third signaling is RRC (Radio Resource Control, wireless money
Source control) signaling.
As the sub- embodiment 2 of embodiment 1, the first signaling is sent on the carrier wave for being deployed in authorization frequency spectrum.
As the sub- embodiment 3 of embodiment 1, the display of the first signaling indicates at least one of:
Subframe belonging to the second time slot of-
(initial time of the second time slot is located at subframe inner width to the starting wideband symbol of occupancy of the second time slot of-in subframe
The initial time of tape symbol)
K1 described in-.
As the sub- embodiment 4 of embodiment 1, the first signaling triggers multiple UE and sends uplink RS.
As the sub- embodiment 5 of embodiment 1, pattern of the uplink RS of the first signaling triggering in wideband symbol reuses SRS
The RS sequence of pattern and SRS in wideband symbol.
Embodiment 2
Embodiment 2 illustrates uplink RS scheduling timing diagram, as shown in Fig. 2.In attached drawing 2, the grid of oblique line mark is the
One time slot, the grid of backslash mark are the second time slots, and the grid of bold box mark is the first subframe.
The first subframe of base station first on a second carrier sends the first signaling, and the first signaling triggers on first carrier
The transmission of uplink RS；Then the uplink RS triggered by the first signaling is detected on the second time slot of first carrier, wherein the first RS
Corresponding first UE.
The first subframe of first UE first on a second carrier receives the first signaling, and the first signaling triggers on first carrier
Uplink RS transmission；Then it is executed on the first time slot of first carrier and listens to operation to determine whether to send uplink RS.Such as
Fruit, which determines, sends uplink RS, and the second time slot on first carrier sends the first RS, otherwise the second time slot on first carrier
Zero is kept to send power.
In embodiment 2, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum, the deployment of the second carrier wave
In authorization frequency spectrum.First RS occupies K1 wideband symbol in the time domain, and the K1 is positive integer.Subframe belonging to second time slot is
N-th of subframe after first subframe, the n are the positive integers of pre-determining；Or second time slot by the first signaling show indicate.
Subframe belonging to second time slot does not keep for the uplink RS by high-level signaling.Between first time slot and the second time slot when
Between interval be less than 20us (for the first UE Rx/Tx state switch).
As the sub- embodiment 1 of embodiment 2, base station sends the uplink RS tune of each UE in the second signaling instruction target UE group
Spend position of the group of information bits in L1 group of information bits.First UE receives the second signaling and determines given information bit group in L1
Position in a group of information bits.
In the sub- embodiment 1 of embodiment 2, the second signaling indicates given position of the group of information bits in L1 group of information bits
It sets, the target UE group includes at least the first UE, and the target UE group includes up to L1 UE, and the first signaling includes the L1
Group of information bits, the given information bit group trigger the transmission of the uplink RS of the first UE.Each group of information bits includes
L2 bit, the L1 are greater than 1 positive integer, and the L2 is positive integer, and the second signaling is high-level signaling.First signaling is by small
The public RNTI in area (Radio Network Temporary Identifier, the tentative mark of wireless network) label, i.e., first
CRC (Cyclic Redundancy Check, cyclic redundancy are delivered for a check) bit of signaling RNTI scrambling code public by the cell.
One sub- embodiment of the sub- embodiment 1 as embodiment 2, the first signaling are located at PDCCH (Physical Downlink
Control Channel, Physical Downlink Control Channel) CSS (Common Search Space, public search space).
As the sub- embodiment 2 of embodiment 2, last K1 wideband symbol in the second Time Slot Occupancy subframe, in attached drawing 2
The first subframe timing shown in.
As the sub- embodiment 3 of embodiment 2, the initial time of the first time slot is the initial time of subframe, in attached drawing 2
Shown in second subframe timing.
Embodiment 3
Embodiment 3 illustrates the transmission time sequence figure of uplink RS and physical layer data, as shown in Fig. 3.In attached drawing 3, oblique line
The grid of mark is the first time slot, and the grid of backslash mark is the second time slot, the grid of cross spider mark be the first time slot and
Time interval between second time slot.
Base station sends the first signaling, the biography of uplink RS of the first signaling triggering on first carrier in the first subframe first
It is defeated；Then the uplink RS triggered by the first signaling and first on first carrier is detected on the second time slot of first carrier
The first physical layer data is detected in time interval between time slot and the second time slot, wherein the first RS corresponds to the first UE.
First UE receives the first signaling, the biography of uplink RS of the first signaling triggering on first carrier in the first subframe first
It is defeated；Then it is executed on the first time slot of first carrier and listens to operation to determine whether to send uplink RS and the ascending physical signal number of plies
According to.If it is determined that uplink RS is sent, the second time slot the first RS of transmission on first carrier and first on first carrier
The first physical layer data is sent in time interval between time slot and the second time slot, otherwise the second time slot on first carrier with
And zero is kept to send power in the first time interval between time slot and the second time slot.
In embodiment 3, the first signaling is the DCI for dispatching uplink physical layer data, and first carrier is deployed in unauthorized
Frequency spectrum.First RS occupies K1 wideband symbol in the time domain, and the K1 is 1.Subframe belonging to second time slot be the first subframe it
N-th of subframe afterwards, the n are the positive integers of pre-determining；Or second time slot by the first signaling show indicate.When described second
Subframe belonging to gap does not keep for the uplink RS by high-level signaling.Second carrier wave is deployed in authorization frequency spectrum.Second time slot is
The last one wideband symbol of subframe scheduled in one signaling
As the sub- embodiment 1 of embodiment 3, pattern of the uplink RS of the first signaling triggering in wideband symbol reuses SRS
The RS sequence of pattern and SRS in wideband symbol.
As the sub- embodiment 2 of embodiment 3, subframe belonging to the second time slot is the SRS that base station is configured by high-level signaling
Subframe except subframe.The SRS subframe includes being used for transmission the subframe of 0 SRS of Type and being used for transmission 1 SRS of Type
Subframe.
As the sub- embodiment 3 of embodiment 3, the first time slot and the second time slot belong to the same subframe, and the first time slot rises
Moment beginning is the initial time of subframe, and the end time of the second time slot is the end time of subframe, and the third subframe such as attached drawing 3 is fixed
When it is shown.
Embodiment 4
Embodiment 4 illustrates the structure chart of uplink RS, as shown in Fig. 4.In attached drawing 4, the grid of backslash mark is this
Second time slot described in invention, the grid of cross spider mark are the RE (Resource that the first heretofore described RS is occupied
Element, resource particle), #1~#K1 indicates that K1 heretofore described wideband symbol, the K1 are greater than 1.
In embodiment 4, pattern of the first RS in wideband symbol reuses pattern and SRS of the SRS in wideband symbol
RS sequence (i.e. the first RS is in wideband symbol and SRS is essentially equal).First RS is in a manner of OCC by the mapped extension in symbol
Onto the K1 wideband symbol, i.e. the first RS is by given SRS multiplied by w1,…,wK1It is respectively mapped to wideband symbol #1 later
On~#K1, wherein w1,…,wK1It is an OCC sequence.
On the basis of the code division multiplexing of traditional SRS and frequency division multiplexing, multiple orthogonal OCC sequences can be into one
Step increases supported uplink RS quantity, meets the needs of uplink CSI report.
Embodiment 5
Embodiment 5 illustrates the structure chart of the first signaling, as shown in Fig. 5.In attached drawing 5, the first signaling includes the L1
A group of information bits G (1)~G (L1), wherein the uplink RS that 1 group of information bits can trigger a UE is sent.It is each described
Group of information bits includes L2 bit, and the L1 is greater than 1 positive integer, and the L2 is positive integer.Base station passes through high-level signaling
Configure position of the corresponding group of information bits of target UE in the first signaling.
As the sub- embodiment 1 of embodiment 5, the L2 is 1.
As the sub- embodiment 2 of embodiment 5, the payload size (Payload Size, i.e. information bit) of the first signaling
Equal with the payload size of DCI format 1C on the transmission carrier wave of the first signaling, the first signaling is in the CSS on PDCCH.
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, processing dress
200 are set to be made of receiving module 201 and sending module 202.
Receiving module 201 is used to receive the first signaling in the first subframe, and the first signaling triggers the uplink on first carrier
The transmission of RS.Sending module 202, which is used to execute on the first time slot of first carrier, listens to operation to determine whether to send uplink
RS.If it is determined that sending uplink RS, the second time slot on first carrier sends the first RS, otherwise second on first carrier
Time slot keeps zero to send power.
In embodiment 6, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum.First RS is in time domain
Upper K1 wideband symbol of occupancy, the K1 is positive integer.Subframe belonging to second time slot is n-th of son after the first subframe
Frame, the n are the positive integers of pre-determining；Or second time slot by the first signaling show indicate.Son belonging to second time slot
Frame does not keep for the uplink RS by high-level signaling.
As the sub- embodiment 1 of embodiment 6, receiving module 201 is also used at least one of:
- receives the second signaling and determines position of the given information bit group in L1 group of information bits.
- receives third signaling and determines the K1, and third signaling is high-level signaling.
Wherein, the first signaling includes the L1 group of information bits, and the given information bit group triggers the upper of the UE
The transmission of row RS.Each group of information bits includes L2 bit, and the L1 is greater than 1 positive integer, and the L2 is just whole
Number, the second signaling is high-level signaling.
As the sub- embodiment 2 of embodiment 6, sending module 202 is also used to listen to operation according to and determines whether to send
Ascending physical signal layer data, if it is determined that send ascending physical signal layer data, the first time slot and the second time slot on first carrier it
Between time interval in send the first physical layer data, otherwise in the time interval keep zero send power.Wherein, first
Signaling is the DCI for dispatching uplink physical layer data, and the K1 is 1, and the second time slot is subframe scheduled in the first signaling
The last one wideband symbol.Subframe except the SRS subframe that subframe belonging to second time slot, which is base station, to be configured by high-level signaling.
As the sub- embodiment 4 of embodiment 6, the payload size of the first signaling is equal to the transmission carrier wave for the first signaling
DCI format 3 bit number.
Embodiment 7
Embodiment 7 illustrates the structural block diagram of the processing unit in base station, as shown in Fig. 7.In attached drawing 7, processing unit
300 are made of sending module 301 and receiving module 302.
Sending module 301 is used to send the first signaling in the first subframe, and the first signaling triggers the uplink on first carrier
The transmission of RS.Receiving module 302 is used to detect the uplink RS triggered by the first signaling on the second time slot of first carrier, wherein
First RS corresponds to the first UE.
In embodiment 7, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum.First RS is in time domain
Upper K1 wideband symbol of occupancy, the K1 is positive integer.Subframe belonging to second time slot is n-th of son after the first subframe
Frame, the n are the positive integers of pre-determining；Or second time slot by the first signaling show indicate.Son belonging to second time slot
Frame does not keep for the uplink RS by high-level signaling.
As the sub- embodiment 1 of embodiment 7, sending module 301 is also used at least one of:
- sends the uplink RS scheduling information bit group of each UE in the second signaling instruction target UE group in L1 information ratio
Position in special group.
- sends third signaling and indicates the K1, and third signaling is high-level signaling.
Wherein, the second signaling indicates given position of the group of information bits in L1 group of information bits, the target UE group
Including at least the first UE, the target UE group includes up to L1 UE, and the first signaling includes the L1 group of information bits, described
Given information bit group triggers the transmission of the uplink RS of the first UE.Each group of information bits includes L2 bit, the L1
It is greater than 1 positive integer, the L2 is positive integer, and the second signaling is high-level signaling.
As the sub- embodiment 2 of embodiment 7, receiving module 302 is also used to the first time slot and second on first carrier
The first physical layer data, corresponding first UE of the first physical layer data are detected in time interval between time slot.Wherein, the first signaling
It is the DCI for dispatching uplink physical layer data, the K1 is 1, and the second time slot is the last of subframe scheduled in the first signaling
One wideband symbol.Subframe except the SRS subframe that subframe belonging to second time slot, which is base station, to be configured by high-level signaling.
As the sub- embodiment 4 of embodiment 7, the payload size of the first signaling is equal to the transmission carrier wave for the first signaling
DCI format 1C bit number.
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 (16)
1. a kind of method in the UE that unlicensed spectrum communicates, wherein include the following steps:
Step A. receives the first signaling, the transmission of uplink RS of the first signaling triggering on first carrier in the first subframe
Step B. is executed on the first time slot of first carrier listens to operation to determine whether to send uplink RS；If it is determined that hair
Row RS is served, the second time slot on first carrier sends the first RS, and otherwise the second time slot on first carrier keeps zero hair
Send power；
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum；First RS occupies K1 in the time domain
Wideband symbol, the K1 are positive integers；Subframe belonging to second time slot is n-th of subframe after the first subframe, and the n is pre-
Determining positive integer；Or second time slot by the first signaling show indicate；Subframe belonging to second time slot is not believed by high level
The uplink RS is kept in order；Pattern of first RS in wideband symbol reuses pattern and SRS of the SRS in wideband symbol
RS sequence.
2. the method according to claim 1, wherein the step A further includes following steps:
Step A0. receives the second signaling and determines position of the given information bit group in L1 group of information bits；
Wherein, the first signaling includes the L1 group of information bits, and the given information bit group triggers the uplink RS of the UE
Transmission；Each group of information bits includes L2 bit, and the L1 is greater than 1 positive integer, and the L2 is positive integer, the
Two signalings are high-level signalings.
3. the method according to claim 1, wherein the step B further includes following steps:
Step B0. listens to operation according to and determines whether to send ascending physical signal layer data, if it is determined that sends upstream physical layer
Data send the first physical layer data in the time interval between the first time slot and the second time slot on first carrier, otherwise
Zero is kept to send power in the time interval；
Wherein, the first signaling is the DCI for dispatching uplink physical layer data, and the K1 is 1, and the second time slot is the first signaling institute
The last one wideband symbol of the subframe of scheduling.
4. according to claim 1 to method described in any claim in 3, which is characterized in that the step A further includes as follows
Step:
Step A1. receives third signaling and determines the K1, and third signaling is high-level signaling.
5. according to claim 1 to method described in any claim in 3, which is characterized in that the K1 is greater than 1, the first RS
It will be in the mapped extension in symbol to the K1 wideband symbol in a manner of OCC.
6. a kind of method in the base station that unlicensed spectrum communicates, wherein include the following steps:
Step A. sends the first signaling, the transmission of uplink RS of the first signaling triggering on first carrier in the first subframe
Step B. detects the uplink RS triggered by the first signaling on the second time slot of first carrier, wherein the first RS corresponding the
One UE；
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum；First RS occupies K1 in the time domain
Wideband symbol, the K1 are positive integers；Subframe belonging to second time slot is n-th of subframe after the first subframe, and the n is pre-
Determining positive integer；Or second time slot by the first signaling show indicate；Subframe belonging to second time slot is not believed by high level
The uplink RS is kept in order；Pattern of first RS in wideband symbol reuses pattern and SRS of the SRS in wideband symbol
RS sequence.
7. according to the method described in claim 6, it is characterized in that, the step A further includes following steps:
Step A0. sends the uplink RS scheduling information bit group of each UE in the second signaling instruction target UE group in L1 information
Position in bit group；
Wherein, the second signaling indicates given position of the group of information bits in L1 group of information bits, and the target UE group includes
At least the first UE, the target UE group include up to L1 UE, and the first signaling includes the L1 group of information bits, described given
Group of information bits triggers the transmission of the uplink RS of the first UE；Each group of information bits includes L2 bit, and the L1 is big
In 1 positive integer, the L2 is positive integer, and the second signaling is high-level signaling.
8. according to the method described in claim 6, it is characterized in that, the step B further includes following steps:
Step B0. detects the first physics number of plies in the time interval between the first time slot and the second time slot on first carrier
According to corresponding first UE of the first physical layer data；
Wherein, the first signaling is the DCI for dispatching uplink physical layer data, and the K1 is 1, and the second time slot is the first signaling institute
The last one wideband symbol of the subframe of scheduling.
9. the method according to any claim in claim 6 to 8, which is characterized in that the step A further includes as follows
Step:
Step A1. sends third signaling and indicates the K1, and third signaling is high-level signaling.
10. the method according to any claim in claim 6 to 8, which is characterized in that the K1 is greater than 1, the first RS
It will be in the mapped extension in symbol to the K1 wideband symbol in a manner of OCC.
11. a kind of user equipment for being communicated in unlicensed spectrum, which is characterized in that the equipment includes:
First module: for receiving the first signaling, the biography of uplink RS of the first signaling triggering on first carrier in the first subframe
It is defeated
Second module: operation is listened to determine whether to send uplink RS for executing on the first time slot of first carrier；If
It determines and sends uplink RS, the second time slot on first carrier sends the first RS, and otherwise the second time slot on first carrier is protected
Hold zero transmission power；
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum；First RS occupies K1 in the time domain
Wideband symbol, the K1 are positive integers；Subframe belonging to second time slot is n-th of subframe after the first subframe, and the n is pre-
Determining positive integer；Or second time slot by the first signaling show indicate；Subframe belonging to second time slot is not believed by high level
The uplink RS is kept in order；Pattern of first RS in wideband symbol reuses pattern and SRS of the SRS in wideband symbol
RS sequence.
12. user equipment according to claim 11, which is characterized in that first module be also used to it is following at least it
One:
- receives the second signaling and determines position of the given information bit group in L1 group of information bits；
- receives third signaling and determines the K1, and third signaling is high-level signaling；
Wherein, the first signaling includes the L1 group of information bits, and the given information bit group triggers the uplink RS of the UE
Transmission；Each group of information bits includes L2 bit, and the L1 is greater than 1 positive integer, and the L2 is positive integer, the
Two signalings are high-level signalings.
13. user equipment according to claim 11, which is characterized in that second module is also used to: being detectd according to described
Operation is listened to determine whether to send ascending physical signal layer data, if it is determined that send ascending physical signal layer data, the on first carrier
The first physical layer data is sent in time interval between one time slot and the second time slot, otherwise keeps zero in the time interval
Send power；
Wherein, the first signaling is the DCI for dispatching uplink physical layer data, and the K1 is 1, and the second time slot is the first signaling institute
The last one wideband symbol of the subframe of scheduling.
14. a kind of base station equipment for being communicated in unlicensed spectrum, which is characterized in that the equipment includes:
First module: for sending the first signaling, the biography of uplink RS of the first signaling triggering on first carrier in the first subframe
It is defeated
Second module: for detecting the uplink RS triggered by the first signaling on the second time slot of first carrier, wherein the first RS
Corresponding first UE；
Wherein, the first signaling is physical layer signaling, and first carrier is deployed in unlicensed spectrum；First RS occupies K1 in the time domain
Wideband symbol, the K1 are positive integers；Subframe belonging to second time slot is n-th of subframe after the first subframe, and the n is pre-
Determining positive integer；Or second time slot by the first signaling show indicate；Subframe belonging to second time slot is not believed by high level
The uplink RS is kept in order；Pattern of first RS in wideband symbol reuses pattern and SRS of the SRS in wideband symbol
RS sequence.
15. base station equipment according to claim 14, which is characterized in that first module be also used to it is following at least it
One:
- sends the uplink RS scheduling information bit group of each UE in the second signaling instruction target UE group in L1 group of information bits
In position；
- sends third signaling and indicates the K1, and third signaling is high-level signaling；
Wherein, the second signaling indicates given position of the group of information bits in L1 group of information bits, and the target UE group includes
At least the first UE, the target UE group include up to L1 UE, and the first signaling includes the L1 group of information bits, described given
Group of information bits triggers the transmission of the uplink RS of the first UE；Each group of information bits includes L2 bit, and the L1 is big
In 1 positive integer, the L2 is positive integer, and the second signaling is high-level signaling.
16. base station equipment according to claim 14, which is characterized in that second module is also used to: in first carrier
On the first time slot and the second time slot between time interval in detect the first physical layer data, the first physical layer data corresponding the
One UE；
Wherein, the first signaling is the DCI for dispatching uplink physical layer data, and the K1 is 1, and the second time slot is the first signaling institute
The last one wideband symbol of the subframe of scheduling.
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| CN201910270609.3A CN109936432B (en) | 2014-12-03 | 2014-12-03 | Method and device for LAA transmission in UE and base station |
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| CN111405668A (en) | 2016-12-09 | 2020-07-10 | 上海朗帛通信技术有限公司 | Method and equipment in UE and base station |
| WO2019227316A1 (en) * | 2018-05-29 | 2019-12-05 | Nokia Shanghai Bell Co., Ltd. | Sounding reference signal transmission in unlicensed spectrum |
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| CN103687032A (en) * | 2012-09-24 | 2014-03-26 | 电信科学技术研究院 | Method for selecting main carrier and device |
| CN105306180A (en) * | 2014-07-28 | 2016-02-03 | 上海朗帛通信技术有限公司 | LAA (License Assisted Access) communication method and device |
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| JP5995850B2 (en) * | 2010-09-29 | 2016-09-21 | エルジー エレクトロニクス インコーポレイティド | Efficient feedback method and apparatus in multi-antenna assisted wireless communication system |
| GB2498988B (en) * | 2012-02-02 | 2014-08-06 | Broadcom Corp | Communications apparatus and methods |
| US9713035B2 (en) * | 2013-05-20 | 2017-07-18 | Qualcomm Incorporated | Beacon transmission over unlicensed spectrum |
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| CN103687032A (en) * | 2012-09-24 | 2014-03-26 | 电信科学技术研究院 | Method for selecting main carrier and device |
| CN105306180A (en) * | 2014-07-28 | 2016-02-03 | 上海朗帛通信技术有限公司 | LAA (License Assisted Access) communication method and device |
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