CN106788927B - The sending method and device of SRS - Google Patents
The sending method and device of SRS Download PDFInfo
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- CN106788927B CN106788927B CN201610320087.XA CN201610320087A CN106788927B CN 106788927 B CN106788927 B CN 106788927B CN 201610320087 A CN201610320087 A CN 201610320087A CN 106788927 B CN106788927 B CN 106788927B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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Abstract
A kind of sending method and device of SRS, the sending method include: the configuration information for receiving the SRS that network side is sent；Using in the preset duration for remaining for UE in the region UpPTS of special subframe between each adjacent two uplink SC-FDMA symbol in advance and carrying out carrier sense, so that each UE sends SRS in corresponding uplink SC-FDMA symbol based on configuration information after carrier sense success；Or all UE carry out carrier sense using the preset duration reserved in the GP before first uplink SC-FDMA symbol in the region UpPTS of special subframe, and after carrier sense success, each UE based on the configuration information its configured for sending the SRS for preempting channel in all uplink SC-FDMA symbols before sending the uplink SC-FDMA symbol of SRS, up to sending SRS in the uplink SC-FDMA symbol that it is configured.The technical program solves the problems, such as SRS transmission obstruction.
Description
Technical field
The present invention relates to LAA technical field more particularly to the sending methods and device of a kind of SRS.
Background technique
In recent years, with the surge of universal and the mobile data flow, cable network flow of mobile device, operator
Network capacity pressure rises violently.However, frequency spectrum resource is short；In authorized spectrum band, it is especially worth higher low-frequency range resource, no
It is limited using only frequency, and consumed rapidly by the user group of rapid development.In global range, 5GHz exempts from licensed band and also possesses
Significant component of usable spectrum, operator and equipment commercial city promote network capacity using unlicensed spectrum in exploration.Therefore,
Frequency spectrum auxiliary access (Licensed Assisted Access, LAA) technology is authorized, also known as licensed band auxiliary exempts from licensed spectrum
Access technology is come into being, and LAA is by using the data traffic of licensed band carrying Information Mobile Service is exempted from, to increase network appearance
Amount.
It is discussed at present in 3GPP (3rd Generation Partnership Project, third generation partner program)
In, it has been determined that LAA can transmit SRS (Sounding Reference Signal, channel detection ginseng on unauthorized carrier wave
Examine signal), and do not transmitted together with PUSCH (Physical Uplink Shared Channel, ascending physical signal share channel)
Aperiodic SRS (Sounding Reference Signal, detection reference signal) can be transmitted after special subframe, but
It needs to carry out carrier sense before SRS transmission.But works as and there are continuous multiple available uplinks in the region UpPTS of special subframe
SC-FDMA (Single-carrier Frequency-Division Multiple Access, single-carrier frequency division multiple access) symbol
When may be used as the SRS transmission of multiple UE (User Equipment, user equipment), it is assigned to wherein first uplink SC-
The transimission power of the SRS (may come from multiple UE) of FDMA symbol can prevent the SRS in subsequent uplink SC-FDMA symbol from passing
It is defeated, this is because the corresponding UE of subsequent uplink SC-FDMA symbol carries out that front uplink SC-FDMA can be listened to when carrier sense
The SRS power of UE in symbol will lead to subsequent uplink SC-FDMA symbol in this way and not be available, carries out the SRS of influence system
Capacity.
Fig. 1 is that in the region UpPTS of special subframe, there are SRS transmissions when multiple uplink SC-FDMA symbols in the prior art
The frame structure schematic diagram of obstructing problem.
As shown in Figure 1, in the region UpPTS, there are two uplink SC-FDMA symbol (i.e. symbol S0 and symbol S1), symbol S0 altogether
SRS transmission before can be located at GP (protection interval) within CCA window in carry out carrier sense, if carrier sense
Success, then UE can carry out SRS transmission in symbol S0, but carry out the UE of SRS transmission in symbol S1 for configuring, and need according with
(i.e. the tail portion of symbol S0) carries out carrier sense before number S1.It is contemplated that as long as there is UE carrying out SRS transmission in symbol S0,
Corresponding SRS power may be monitored when the UE that symbol S1 carries out SRS transmission carries out carrier sense by then configuring, to judge
Channel be it is busy, not can be carried out corresponding SRS and send.
Summary of the invention
The invention solves there are SRS transmissions when multiple uplink SC-FDMA symbols in the region UpPTS of special subframe
The problem of obstruction.
To solve the above problems, including the following steps: the embodiment of the invention provides the sending method of SRS a kind of
Receive the configuration information for the SRS that network side is sent；
SRS is sent using one of following processing mode mode:
1) remaining for UE progress in the region UpPTS of special subframe between each adjacent two uplink SC-FDMA symbol in advance
The preset duration of carrier sense, so that each UE is based on the configuration information in corresponding uplink SC- after carrier sense success
SRS is sent in FDMA symbol；
2) all UE are using reserving in the GP in the region UpPTS of special subframe before first uplink SC-FDMA symbol
Preset duration carries out carrier sense, and after carrier sense success, the use that each UE is configured based on the configuration information at it
The SRS for preempting channel is sent in all uplink SC-FDMA symbols before the uplink SC-FDMA symbol for sending SRS, directly
Extremely SRS is sent in the uplink SC-FDMA symbol that it is configured.
Optionally, according to described in the region UpPTS of special subframe between each adjacent two uplink SC-FDMA symbol
Remain for the mode that UE carries out the preset duration of carrier sense, the last one uplink SC-FDMA in the region UpPTS in advance
The end position of symbol is aligned with the sub-frame boundary of the special subframe；Or the last one uplink SC- in the region UpPTS
The end position of FDMA symbol is aligned with the end position of the 13rd symbol of special subframe；Or it is last in the region UpPTS
The end position of one uplink SC-FDMA character position is that preset end position is either allocated to UE's by base station.
Optionally, using described in the region UpPTS of special subframe between each adjacent two uplink SC-FDMA symbol
In the mode for remaining for the preset duration that UE carries out carrier sense in advance, in the region UpPTS before first uplink SC-FDMA symbol
It is reserved with the UE for being configured to send SRS in first uplink SC-FDMA symbol in GP and carries out the pre- of carrier sense
If duration.
Optionally, the uplink SC-FDMA for being used to send SRS that each UE is configured based on the configuration information at it
The SRS for preempting channel is sent in all uplink SC-FDMA symbols before symbol, up to the uplink SC- configured at it
SRS is sent in FDMA symbol includes:
All UE for sending SRS in first uplink SC-FDMA symbol for configuring, then exist according to the configuration information
SRS is sent in first uplink SC-FDMA symbol；
The each UE for sending SRS in n-th of uplink SC-FDMA symbol for configuring, then on first to (n-1)th
The SRS for preempting channel is all sent in row SC-FDMA symbol, and is sent in n-th of uplink SC-FDMA symbol described in it
SRS；Wherein, for sending the total number of the SC-FDMA symbol of SRS in 2≤n≤region UpPTS.
Optionally, the SRS all sent in first to (n-1)th uplink SC-FDMA symbol for preempting channel
It include: that the SRS resource chosen in uplink SC-FDMA symbol in first to (n-1)th uplink SC-FDMA symbol is sent
For preempting the SRS of channel.
Optionally, the SRS resource includes: one in SRS Comb and a cyclic shift.
Optionally, the configuration information of the SRS resource by predetermined manner or network side by high-level signaling configure to
UE。
Optionally, the SRS resource be not used for based on configuration information need to be in described first to (n-1)th uplink SC-
It is used when sending the UE transmission SRS of SRS in FDMA symbol.
Optionally, the SRS configuration information for receiving network side transmission includes: to be connect by RRC signaling or physical layer signaling
Receive the configuration information for the SRS that network side issues.
Optionally, the preset duration is the length of 25 microseconds or a uplink SC-FDMA symbol.
The embodiment of the invention also provides the sending devices of SRS a kind of, comprising:
Receiving unit, the configuration information of the SRS for receiving network side transmission；
First processing units or the second processing unit；Wherein,
The first processing units are used for each adjacent two uplink SC-FDMA symbol in the region UpPTS of special subframe
Between remain for the preset duration that UE carries out carrier sense in advance so that each UE matches confidence based on described after carrier sense success
Breath sends SRS in corresponding uplink SC-FDMA symbol；
Described the second processing unit utilizes first uplink SC-FDMA in the region UpPTS of special subframe for all UE
The preset duration reserved in GP before symbol carries out carrier sense, and after carrier sense success, each UE is based on the configuration
Information is used what it was configured for sending in all uplink SC-FDMA symbols before sending the uplink SC-FDMA symbol of SRS
In the SRS of preemption channel, until sending SRS in the uplink SC-FDMA symbol that it is configured.
Optionally, the last one uplink SC-FDMA symbol in the first processing units, in the region UpPTS
End position be aligned with the sub-frame boundary of the special subframe；Or the last one uplink SC-FDMA symbol in the region UpPTS
Number end position be aligned with the end position of the 13rd symbol of special subframe；Or in the last one in the region UpPTS
The end position of row SC-FDMA character position is that preset end position is either allocated to UE's by base station.
Optionally, in described the second processing unit, in the GP in the region UpPTS before first uplink SC-FDMA symbol
Be reserved with for be configured in first uplink SC-FDMA symbol send SRS UE carry out carrier sense it is default when
It is long.
Optionally, described the second processing unit includes:
First processing subelement, for all UE of SRS to be sent in first uplink SC-FDMA symbol for configuring,
SRS is then sent in first uplink SC-FDMA symbol according to the configuration information；
Second processing subelement, for sending each UE of SRS in n-th of uplink SC-FDMA symbol for configuring, then
The SRS for preempting channel is all sent in first to (n-1)th uplink SC-FDMA symbol, and in n-th described in it
SRS is sent in row SC-FDMA symbol；Wherein, for sending total of the SC-FDMA symbol of SRS in 2≤n≤region UpPTS
Number.
Optionally, the second processing subelement is used to choose in first to (n-1)th uplink SC-FDMA symbol
A SRS resource in row SC-FDMA symbol sends the SRS for preempting channel.
Optionally, the SRS resource includes: one in SRS Comb and a cyclic shift.
Optionally, the configuration information of the SRS resource by predetermined manner or network side by high-level signaling configure to
UE。
Optionally, the SRS resource be not used for based on configuration information need to be in described first to (n-1)th uplink SC-
It is used when sending the UE transmission SRS of SRS in FDMA symbol.
Optionally, the preset duration is the length of 25 microseconds or a uplink SC-FDMA symbol.
Compared with prior art, technical solution of the present invention has the advantages that
Based on LAA technology, there are multiple uplink SC-FDMA symbols for sending SRS in the region UpPTS of special subframe
When, in order to avoid there is the problem of SRS transmission obstruction, the embodiment of the invention provides two kinds of processing modes, in practical applications
Terminal side can choose one of processing method and send SRS.It is specific as follows:
1) remain for the preset duration that UE carries out carrier sense in advance before each uplink SC-FDMA symbol, to protect
Carrier sense can be carried out before the uplink SC-FDMA symbol that it is configured by demonstrate,proving all UE, and when judging channel idle,
UE sends SRS in the uplink SC-FDMA symbol that it is configured；
2) all UE are using reserving in the GP in the region UpPTS of special subframe before first uplink SC-FDMA symbol
Preset duration carries out carrier sense, and when judging channel idle, the use that each UE is configured based on the configuration information at it
The SRS for preempting channel is sent in all uplink SC-FDMA symbols before the uplink SC-FDMA symbol for sending SRS, directly
Extremely SRS is sent in the uplink SC-FDMA symbol that it is configured.Further, the transmission of configuration is for preempting the SRS resource of channel
It is not used for use when UE normally sends SRS.
Channel can be occupied before UE being made normally to send SRS so in advance, and does not influence other UE and normally sends SRS.
To guarantee that UE is sent on the uplink SC-FDMA symbol that it is configured under the premise of the transmission for meeting unauthorized carrier wave is regular
SRS。
Detailed description of the invention
Fig. 1 is that in the region UpPTS of special subframe, there are SRS transmissions when multiple uplink SC-FDMA symbols in the prior art
The frame structure schematic diagram of obstructing problem；
Fig. 2 is a kind of flow diagram of the specific embodiment of the sending method of SRS of the embodiment of the present invention；
Fig. 3 A is the frame structure schematic diagram of a specific example of employing mode one；
Fig. 3 B is the frame structure schematic diagram of another specific example of employing mode one；
Fig. 4 A is the frame structure schematic diagram of a specific example of employing mode two；
Fig. 4 B is the frame structure schematic diagram of another specific example of employing mode two；
Fig. 5 is a kind of structural schematic diagram of the specific embodiment of the sending device of SRS.
Specific embodiment
As stated in the background art, in LTE system, there are multiple uplink SC-FDMA in the region UpPTS of special subframe
The problem of SRS transmission is blocked when symbol.
To solve the above-mentioned problems, the embodiment of the invention provides the sending method of SRS a kind of and devices.Utilize this technology
Scheme can guarantee in the case where configuring at least two uplink SC-FDMA symbol as UpPTS, and different UE can be different upper
SRS transmission is carried out on row SC-FDMA symbol, is solved and is blocked uplink below because of the SRS transmission of front uplink SC-FDMA symbol
The SRS transmission problem of SC-FDMA symbol, to ensure that the capacity for sending SRS based on UE in LAA technology.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
The technical program is suitable for LTE system, and in LTE system, eNodeB estimates the uplink of different frequency range using SRS
Channel quality.Instantaneous channel state those of can be got well PRB according to " uplink channel status estimation " by the scheduler of the side eNodeB
The ascending physical signal that (Physical Resource Block, Physical Resource Block) distributes to UE shares transmission, while can select
It selects different configured transmissions (for example, instantaneous data rates), and corresponding upstream multi-antenna is selected to transmit relevant different parameters
(i.e. for " upstream frequency is selectively dispatched ").SRS can also be used to estimate uplink synchronous, and assuming that downlink/up channel is mutual
In the situation (especially TDD) of benefit, down channel quality is estimated using channel symmetry.
Different from DMRS (correlation demodulation for upload control and data channel), SRS is not necessarily to and any uplink
Physical channel transmits together.But if SRS and other physical channels (such as PUSCH) transmit together, SRS would generally cover one
A different and usually bigger frequency band.
LTE system defines the SRS transmission of 2 seed types, is respectively as follows:
1) it periodicity SRS (periodic SRS, corresponding trigger type 0): is introduced in Release-8, passes through RRC
Configuration.
2) it aperiodicity SRS (non-periodic SRS, corresponding trigger type 1): is introduced in Release-10.
For FDD, eNodeB can trigger UE by DCI format 0/4/1A and send aperiodicity SRS.For TDD, eNodeB can
Aperiodicity SRS is sent to trigger UE by DCI format 0/4/1A/2B/2C.
If UE needs the same subframe sending cycle SRS in same serving cell and aperiodicity SRS, UE
Aperiodicity SRS can be sent.
For TDD, if the UpPTS of a serving cell includes 1 SC-FDMA symbol, which can be used for
SRS transmission；If the UpPTS of a serving cell includes 2 SC-FDMA symbols, this 2 symbols can be used in SRS transmission,
And same UE can be distributed to simultaneously.
Can be carried out in one SC-FDMA symbol multiple UE SRS signal multiplexing, including use different SRS Comb with
And the cyclic shift of SRS sequence distinguishes different UE.
Further, it is based on LAA technology, LAA is worked on unauthorized carrier wave frequency range, it is therefore desirable to according to unauthorized carrier wave
On rule, UE needs to carry out carrier sense before sending signal, to determine the busy situation of channel, only when channel be free time
When, equipment can just carry out signal transmission.
For in LAA, standard has been defined at present, the transmission of aperiodic SRS is only supported in LAA, and SRS can be in uplink
The last one SC-FDMA symbol transmission of subframe.When SRS is individually transmitted, i.e. SRS is not with PUSCH transmission, SRS at least can be with
It is transmitted in the descender subframe of LAA.For the SRS individually transmitted, if the transmission of SRS is located at the MCOT of the base station LAA
Within (maximum continuous transmission time, maximum continuously transmit duration), it is only necessary to use one long
Degree is that the carrier sense window of 25 microseconds carries out carrier sense；Conversely, if the transmission of SRS is located at except the MCOT of the base station LAA,
Mechanism specified in the class 4 using the LBT of the definition in LAA is needed to carry out carrier sense.
Here, it should be noted that MCOT is that the maximum that equipment is seized on unauthorized carrier wave after channel can continuously transmit
Duration.The requirement of different countries and regions is not quite similar, such as Japan regulation MCOT is 4ms.And 3GPP is directed to different industry
Business LBT priority level, the MCOT provided is also different, such as the MCOT of LBT priority level 1/2/3/4 is respectively 2ms, 3ms, 10ms
Or 8ms, 10ms or 8ms.For priority level 3/4, if according to frequency specification, in certain frequency ranges determination be not in LAA with
Other outer equipment for supporting the technology of unauthorized carrier operation, then MCOT value is 10 milliseconds, and otherwise MCOT value is 8 millis
Second.
For the descender subframe (special subframe for being similar to LTE frame structure type 2 (TDD)) of LAA.Descender molecule
Before frame several symbols be downlink symbol (DwPTS), followed by can be uplink and downlink protection interval (GP), behind can be
Row symbol (UpPTS).Although at present to the length of the descender subframe of LAA without clearly stipulate that but referring to current TDD subframe
Design, can have in the region UpPTS of the descender subframe of LAA 1 to multiple uplinks.For example, when descender subframe
The length of DwPTS is 3 or 6 symbols, and UpPTS symbol lengths can be with value for 4.
As shown in Fig. 2 the process signal of the specific embodiment of the sending method of a kind of SRS of the embodiment of the present invention
Figure.With reference to Fig. 2, the sending method of SRS includes the following steps:
Step S1: the configuration information for the SRS that network side is sent is received；
Step S2: SRS is sent using one of following processing mode mode:
1) remaining for UE progress in the region UpPTS of special subframe between each adjacent two uplink SC-FDMA symbol in advance
The preset duration of carrier sense, so that each UE is based on the configuration information in corresponding uplink SC- after carrier sense success
SRS is sent in FDMA symbol；
2) all UE are using reserving in the GP in the region UpPTS of special subframe before first uplink SC-FDMA symbol
Preset duration carries out carrier sense, and after carrier sense success, the use that each UE is configured based on the configuration information at it
The SRS for preempting channel is sent in all uplink SC-FDMA symbols before the uplink SC-FDMA symbol for sending SRS, directly
Extremely SRS is sent in the uplink SC-FDMA symbol that it is configured.
In the present embodiment, UE can receive the configuration for the SRS that network side issues by RRC signaling or physical layer signaling
Information.
In order to avoid SRS transmission obstructing problem, two kinds of processing modes are present embodiments provided, combined with specific embodiments below
Both processing modes are described in detail.
Mode one
As described in step S2, a kind of processing mode is: each adjacent two uplink in the region UpPTS of special subframe
Remain for the preset duration that UE carries out carrier sense between SC-FDMA symbol in advance, so that each UE base after carrier sense success
SRS is sent in corresponding uplink SC-FDMA symbol in the configuration information.
Specifically, it according to the prior art, is reserved in the GP in the region UpPTS before first uplink SC-FDMA symbol
Have for being configured to send the preset duration of the UE progress carrier sense of SRS in first uplink SC-FDMA symbol.?
On the basis of this, inventor further considers to reserve its before each uplink SC-FDMA symbol and corresponding detects for carrier wave
The preset duration listened, to guarantee that all UE can carry out carrier sense before the uplink SC-FDMA symbol that it is configured.
For example, being the frame structure schematic diagram using a specific example of present treatment mode shown in Fig. 3 A.With reference to Fig. 3 A,
When in the region UpPTS there are when two uplink SC-FDMA symbols, for configuring the SRS transmission in first SC-FDMA symbol S0
Before, the preset duration (CCA (Clear as shown in fig. 3 that UE can be intercepted in the GP before SC-FDMA symbol S0
Channel Assessment, clear channel assessment (CCA)) window.SRS in second SC-FDMA symbol S1 of configuration is passed
It is defeated, one preset duration can be reserved between S0 and S1 as configuration carries out SRS in second SC-FDMA symbol S1
The UE of transmission carries out carrier sense.
It should be noted that continuous two uplink SC-FDMA symbol is (with reference in Fig. 1 shown in compared with the prior art
S0, S1), in the mode shown in Fig. 3 A, be equivalent to the initial position Forward of first uplink SC-FDMA symbol (i.e. S0)
One preset duration.
In another example being the frame structure schematic diagram using another specific example of present treatment mode shown in Fig. 3 B.With reference to
Fig. 3 B, when there is the uplink SC-FDMA symbol of more than two (such as 4) in the region UpPTS, each uplink SC-FDMA
Be each equipped with corresponding UE in symbol and carry out SRS transmission, then respectively between uplink SC-FDMA symbol S0 and S1, S1 and S2 it
Between and S2 and S3 between reserve before preset duration (CCA window as shown in Figure 3B) sends SRS for UE and carry out
Carrier sense.
It should be noted that the last one uplink SC-FDMA symbol in the mode shown in Fig. 3 B, in the region UpPTS
End position be aligned with the sub-frame boundary of the special subframe.Alternatively, the last one uplink SC-FDMA in the region UpPTS
The end position of symbol is aligned with the end position of the 13rd symbol of special subframe.Alternatively, the last one in the region UpPTS
The end position of uplink SC-FDMA character position is that preset end position is either allocated to UE's by base station.
Wherein, the symbol lengths in the DwPTS of the special subframe and GP length are that network is pre-configured with to UE's.
Mode two
As described in step S2, another processing mode is: all UE utilize first in the region UpPTS of special subframe
The preset duration reserved in GP before uplink SC-FDMA symbol carries out carrier sense, and after carrier sense success, each UE base
It is accorded with what it was configured for all uplink SC-FDMA before sending the uplink SC-FDMA symbol of SRS in the configuration information
The SRS for preempting channel is sent in number, until sending SRS in the uplink SC-FDMA symbol that it is configured.
Specifically, all UE within multiple uplink SC-FDMA symbols are configured at and are all made of identical CCA window (i.e.
The preset duration reserved in GP before first uplink SC-FDMA symbol) carry out carrier sense.
If carrying out carrier sense in CCA window judges channel for the free time, for configuring in first uplink SC-
All UE that SRS is sent in FDMA symbol, then send in first uplink SC-FDMA symbol according to the configuration information
SRS。
And each UE of SRS is sent in n-th of uplink SC-FDMA symbol for configuring, then at first to (n-1)th
The SRS for preempting channel is all sent in uplink SC-FDMA symbol, and is sent out in n-th of uplink SC-FDMA symbol described in it
Send SRS.Wherein, for sending the total number of the SC-FDMA symbol of SRS in 2≤n≤region UpPTS.
Wherein, all sending in first to (n-1)th uplink SC-FDMA symbol can adopt for preempting the SRS of channel
Implemented with such as under type: choosing one in uplink SC-FDMA symbol in first to (n-1)th uplink SC-FDMA symbol
A SRS resource sends the SRS for preempting channel.Wherein, the SRS resource includes: one in SRS Comb and one
Cyclic shift.
It should be noted that the SRS resource be not used for based on configuration information need to be on described first to (n-1)th
It is used when sending the UE transmission SRS of SRS in row SC-FDMA symbol.It can be occupied in advance before UE being made normally to send SRS in this way
Channel, and do not influence other UE and normally send SRS.To guarantee UE under the premise of the transmission for meeting unauthorized carrier wave is regular
SRS is sent on its uplink SC-FDMA symbol configured.
, whereas if in CCA window carry out carrier sense judge channel be it is busy, then abandon corresponding SRS transmission.
For example, as shown in Figure 4 A is the frame structure schematic diagram for using a specific example of present treatment mode.With reference to figure
4A, for configuring the UE of adjacent first uplink SC-FDMA symbol (i.e. S0) after CCA window, if in CCA
Carrier sense is carried out in window and judges channel for the free time, then the configuration of direct basis network carries out corresponding SRS transmission, otherwise
Judge channel be it is busy, then abandon corresponding SRS transmission.
For configuring all UE of adjacent second uplink SC-FDMA symbol (i.e. S1) after CCA window, if
Carrier sense is carried out in CCA window judges that channel for the free time, then sends one in uplink SC-FDMA symbol S0 and is used for
Preempt the SRS of channel.Preferably, all UE configured in uplink SC-FDMA symbol S1 are in uplink SC-FDMA symbol S0
SRS transmission can use identical SRS resource to reduce the occupancy to SRS resource in SC-FDMA symbol S0.
Further, for configure after CCA window adjacent second uplink SC-FDMA symbol S1 all UE,
One is sent in uplink SC-FDMA symbol S0 for after preempting the SRS of channel, in uplink SC-FDMA symbol S1 according to
The configuration of base station carries out normal SRS transmission.
In another example as shown in Figure 4 B is the frame structure schematic diagram for using another specific example of present treatment mode.Ginseng
Fig. 4 B is examined, there are 4 uplink SC-FDMA symbols in the region UpPTS, is each equipped in each uplink SC-FDMA symbol corresponding
UE carries out SRS transmission, then in addition to being configured at the UE for carrying out SRS transmission within first uplink SC-FDMA symbol, below
The UE that SRS transmission is carried out in all uplink SC-FDMA symbols carries out carrier sense in CCA window and judges signal for the free time
Afterwards, it is required to send one in all uplink SC-FDMA symbols before its uplink configured SC-FDMA symbol for pre-
The SRS of channel is accounted for, until carrying out normal SRS transmission in the uplink SC-FDMA symbol of its configuration.
In aforesaid way one and mode two, the preset duration is the length of 25 microseconds or a uplink SC-FDMA symbol
Degree.
Based on the sending method of above-mentioned SRS, the embodiment of the invention also provides the sending devices of SRS a kind of.As shown in Figure 5
Be a kind of SRS of the invention sending device specific embodiment structural schematic diagram.
With reference to Fig. 5, described device 1 includes:
Receiving unit 11, the configuration information of the SRS for receiving network side transmission；
First processing units 12 or the second processing unit 13；Wherein,
The first processing units 12 are used for each adjacent two uplink SC-FDMA in the region UpPTS of special subframe and accord with
Remain for the preset duration that UE carries out carrier sense between number in advance, so that each UE is based on the configuration after carrier sense success
Information sends SRS in corresponding uplink SC-FDMA symbol；
Described the second processing unit 13 utilizes first uplink SC- in the region UpPTS of special subframe for all UE
The preset duration reserved in GP before FDMA symbol carries out carrier sense, and after carrier sense success, each UE is based on described
Configuration information its configured for being sent out in all uplink SC-FDMA symbols before sending the uplink SC-FDMA symbol of SRS
The SRS for preempting channel is sent, until sending SRS in the uplink SC-FDMA symbol that it is configured.
In specific implementation, the configuration information of the SRS resource passes through high-level signaling by predetermined manner or network side
It configures to UE.
In the first processing units 12, the end of the last one uplink SC-FDMA symbol in the region UpPTS
Position is aligned with the sub-frame boundary of the special subframe.
In described the second processing unit 13, it is reserved in the GP in the region UpPTS before first uplink SC-FDMA symbol
For being configured to send the preset duration of the UE progress carrier sense of SRS in first uplink SC-FDMA symbol.
Described the second processing unit 13 includes: the first processing subelement (not shown), for for configuring at first
All UE that SRS is sent in row SC-FDMA symbol, then according to the configuration information in first uplink SC-FDMA symbol
Interior transmission SRS；
Second processing subelement (not shown), for sending SRS's in n-th of uplink SC-FDMA symbol for configuring
Each UE then sends the SRS for preempting channel in first to (n-1)th uplink SC-FDMA symbol, and described in it
N-th of uplink SC-FDMA symbol in send SRS；Wherein, for sending the SC-FDMA of SRS in 2≤n≤region UpPTS
The total number of symbol.
Wherein, the second processing subelement is for choosing uplink in first to (n-1)th uplink SC-FDMA symbol
A SRS resource in SC-FDMA symbol sends the SRS for preempting channel.The SRS resource includes: in SRS Comb
One and a cyclic shift.The SRS resource is not used for need to be on described first to (n-1)th based on configuration information
It is used when sending the UE transmission SRS of SRS in row SC-FDMA symbol.The preset duration is 25 microseconds or a uplink SC-FDMA
The length of symbol.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in computer readable storage medium, storage
Medium may include: ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (17)
1. a kind of sending method of SRS, which comprises the steps of:
Receive the configuration information for the SRS that network side is sent；
SRS is sent using following processing mode:
All UE using reserved in the GP in the region UpPTS of special subframe before first uplink SC-FDMA symbol it is default when
It is long to carry out carrier sense, and after carrier sense success, each UE is used to send based on the configuration information what it was configured
The SRS for preempting channel is sent in all uplink SC-FDMA symbols before the uplink SC-FDMA symbol of SRS, until at it
SRS is sent in the uplink SC-FDMA symbol configured.
2. the sending method of SRS as described in claim 1, which is characterized in that all UE utilize the UpPTS of special subframe
When the preset duration reserved in GP in region before first uplink SC-FDMA symbol carries out carrier sense, the in the region UpPTS
It is reserved in GP before one uplink SC-FDMA symbol for being configured to send in first uplink SC-FDMA symbol
The UE of SRS carries out the preset duration of carrier sense.
3. the sending method of SRS as described in claim 1, which is characterized in that each UE is based on the configuration information and exists
Its configured for sending in all uplink SC-FDMA symbols before sending the uplink SC-FDMA symbol of SRS for preempting
The SRS of channel, until transmission SRS includes: in the uplink SC-FDMA symbol that it is configured
All UE for sending SRS in first uplink SC-FDMA symbol for configuring, then according to the configuration information described
SRS is sent in first uplink SC-FDMA symbol；
The each UE for sending SRS in n-th of uplink SC-FDMA symbol for configuring, then in first to (n-1)th uplink
The SRS for preempting channel is all sent in SC-FDMA symbol, and is sent in n-th of uplink SC-FDMA symbol described in it
SRS；Wherein, for sending the total number of the SC-FDMA symbol of SRS in 2≤n≤region UpPTS.
4. the sending method of SRS as claimed in claim 3, which is characterized in that described in first to (n-1)th uplink SC-
The SRS sent in FDMA symbol for preempting channel includes: to choose in first to (n-1)th uplink SC-FDMA symbol
A SRS resource in uplink SC-FDMA symbol sends the SRS for preempting channel.
5. the sending method of SRS as claimed in claim 4, which is characterized in that the SRS resource includes: in SRS Comb
One and a cyclic shift.
6. the sending method of SRS as claimed in claim 4, which is characterized in that the configuration information of the SRS resource passes through default
Mode or network side are configured by high-level signaling to UE.
7. the sending method of SRS as claimed in claim 4, which is characterized in that the SRS resource is not used for based on confidence
The UE that breath need to send SRS in described first to (n-1)th uplink SC-FDMA symbol is used when sending SRS.
8. the sending method of SRS as described in claim 1, which is characterized in that the SRS for receiving network side transmission matches confidence
Breath includes: the configuration information that the SRS that network side issues is received by RRC signaling or physical layer signaling.
9. the sending method of SRS as described in claim 1, which is characterized in that the preset duration is on 25 microseconds or one
The length of row SC-FDMA symbol.
10. a kind of sending device of SRS characterized by comprising
Receiving unit, the configuration information of the SRS for receiving network side transmission；
The second processing unit；Wherein,
Described the second processing unit utilizes first uplink SC-FDMA symbol in the region UpPTS of special subframe for all UE
The preset duration reserved in preceding GP carries out carrier sense, and after carrier sense success, each UE is based on the configuration information
It is used in advance what it was configured for being sent in all uplink SC-FDMA symbols before sending the uplink SC-FDMA symbol of SRS
The SRS of channel is accounted for, until sending SRS in the uplink SC-FDMA symbol that it is configured.
11. the sending device of SRS as claimed in claim 10, which is characterized in that in described the second processing unit, UpPTS
It is reserved in GP in region before first uplink SC-FDMA symbol for being configured to accord in first uplink SC-FDMA
The UE that SRS is sent in number carries out the preset duration of carrier sense.
12. the sending device of SRS as claimed in claim 10, which is characterized in that described the second processing unit includes:
First processing subelement, for sending all UE of SRS, then root in first uplink SC-FDMA symbol for configuring
SRS is sent in first uplink SC-FDMA symbol according to the configuration information；
Second processing subelement, for sending each UE of SRS in n-th of uplink SC-FDMA symbol for configuring, then the
The SRS for preempting channel, and n-th of uplink described in it are all sent in one to (n-1)th uplink SC-FDMA symbol
SRS is sent in SC-FDMA symbol；Wherein, for sending total of the SC-FDMA symbol of SRS in 2≤n≤region UpPTS
Number.
13. the sending device of SRS as claimed in claim 12, which is characterized in that the second processing subelement is used for the
The SRS resource chosen in uplink SC-FDMA symbol in one to (n-1)th uplink SC-FDMA symbol is sent for preempting
The SRS of channel.
14. the sending device of SRS as claimed in claim 13, which is characterized in that the SRS resource includes: in SRS Comb
One and a cyclic shift.
15. the sending device of SRS as claimed in claim 13, which is characterized in that the configuration information of the SRS resource passes through pre-
If mode or network side are configured by high-level signaling to UE.
16. the sending device of SRS as claimed in claim 13, which is characterized in that the SRS resource is not used for based on configuration
The UE that information need to send SRS in described first to (n-1)th uplink SC-FDMA symbol is used when sending SRS.
17. the sending device of SRS as claimed in claim 10, which is characterized in that the preset duration is 25 microseconds or one
The length of uplink SC-FDMA symbol.
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| CN110324906B (en) * | 2018-03-29 | 2023-02-21 | 维沃移动通信有限公司 | Signal transmission method, device and terminal |
| CN110505026B (en) * | 2018-05-18 | 2022-03-29 | 华为技术有限公司 | Signal interception method, related equipment and system |
| CN116707734A (en) * | 2019-04-30 | 2023-09-05 | 华为技术有限公司 | Method and related device for transmitting sounding reference signal |
| CN112398618B (en) * | 2019-08-16 | 2022-03-29 | ***通信有限公司研究院 | Sending method, receiving method, terminal and network equipment of sounding reference signal |
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| CN101505485A (en) * | 2008-02-05 | 2009-08-12 | 三星电子株式会社 | Method and apparatus for sending SRS in LTE TDD system |
| CN102404074A (en) * | 2010-09-17 | 2012-04-04 | 电信科学技术研究院 | Transmission method and equipment of non-periodic SRS (Stimulated Raman scattering) in TDD (Time Division Duplexing) system |
| CN103095442A (en) * | 2011-10-31 | 2013-05-08 | 中兴通讯股份有限公司 | Sounding reference signal configuration method and device |
| CN104717686A (en) * | 2015-03-31 | 2015-06-17 | 深圳酷派技术有限公司 | Channel detection method of unauthorized frequency band and network cell equipment |
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| CN101505485A (en) * | 2008-02-05 | 2009-08-12 | 三星电子株式会社 | Method and apparatus for sending SRS in LTE TDD system |
| CN102404074A (en) * | 2010-09-17 | 2012-04-04 | 电信科学技术研究院 | Transmission method and equipment of non-periodic SRS (Stimulated Raman scattering) in TDD (Time Division Duplexing) system |
| CN103095442A (en) * | 2011-10-31 | 2013-05-08 | 中兴通讯股份有限公司 | Sounding reference signal configuration method and device |
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