CN105323854B - A kind of method and apparatus that LAA interference avoids - Google Patents
A kind of method and apparatus that LAA interference avoids Download PDFInfo
- Publication number
- CN105323854B CN105323854B CN201410378225.0A CN201410378225A CN105323854B CN 105323854 B CN105323854 B CN 105323854B CN 201410378225 A CN201410378225 A CN 201410378225A CN 105323854 B CN105323854 B CN 105323854B
- Authority
- CN
- China
- Prior art keywords
- time slot
- return path
- carrier
- path signal
- stator frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention proposes a kind of LAA to interfere the method and apparatus avoided.Base station sends return path signal in the first time slot to stator frame in step 1 on first carrier, in step 2 on first carrier described in stator frame the second time slot in receive ascending physical signal layer data.Wherein, described include the first time slot to stator frame in the time domain; protection interval; second time slot; the overall length of first time slot and protection interval is 1 or 2 multicarrier symbols; first carrier is deployed in unlicensed spectrum, and the time of the protection interval, the base station kept zero transmission power in the protection interval of first carrier not less than switching time slot.The solution of the present invention avoids the interference that LAA uplink receives adjacent base station.In addition, the present invention has been compatible with existing LTE standard 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.For TDD LAA, when neighbouring LAA system executes LBT in sub-frame of uplink under
The received signal power that row subframe detects may differ by very big (base station is to the interference of base station much larger than interference of the UE to base station),
Therefore neighbouring LAA system is likely to occupy the sub-frame of uplink of TDD LAA, to cause biggish interference.In view of the above-mentioned problems,
The invention discloses a kind of LAA to interfere the method and apparatus avoided.
Summary of the invention
The invention discloses a kind of methods in base station, wherein includes the following steps:
Step A. sends return path signal in the first time slot to stator frame on first carrier
Step B. on first carrier described in stator frame the second time slot in receive ascending physical signal layer data
Wherein, described includes the first time slot, protection interval, the second time slot, the first time slot and guarantor to stator frame in the time domain
The overall length at shield interval is 1 or 2 multicarrier symbols, and first carrier is deployed in unlicensed spectrum, the protection interval when
Between not less than switching time slot, the base station is kept in the protection interval of first carrier zero send power.
Described to stator frame is 1ms (millisecond, millisecond) in the time domain.Described return is eated dishes without rice or wine between referring to base station
Transmission, i.e., the target receiver of the described return path signal is adjacent base station.Therefore the protection interval does not have to accommodate propagation delay.Institute
It states base station and completes transmission/reception switching in the protection interval.The upstream physical layer data include DMRS
(Demodulation Reference Signal, demodulated reference signal).As one embodiment, it is described to stator frame when
It further include that 1 multicarrier symbol is used for transmission SRS (Sounding Reference Signal, interception reference signal) on domain.On
The essence for stating method, which is base station, sends return path signal to indicate the subframe to the occupancy of the sub-frame of uplink, phase in sub-frame of uplink
Adjacent base station detects that the return path signal will not then occupy the sub-frame of uplink.The above method ensures uplink signal not by adjacent base
The signal interference stood.
As one embodiment, the switching time slot is 624Ts, for accommodating transmission/reception switching of the base station, Ts
It is 1/30720ms.As one embodiment, the overall length of the first time slot and protection interval is 1 multicarrier symbol.As a reality
Example is applied, the multicarrier symbol respectively corresponds an OFDM including corresponding CP (Cyclic Prefix, cyclic prefix) in LTE
(Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) symbol or one include phase
Answer the SC-FDMA (Single Carrier Frequency Division Multi Access, single-carrier frequency division multiple access) of CP
Symbol.As one embodiment, the first time slot occupy do not include CP OFDM symbol 1/X along with CP, the X is just whole
Number.The duration of the CP be 144Ts (common CP, non-first multicarrier symbol) or 160Ts (common CP, first
Multicarrier symbol) or 512Ts (extension CP).
As one embodiment, all sub-frame of uplink (can be by the subframe of uplink scheduling signaling scheduling) on first carrier
In, ascending physical signal layer data all can only be in the location transmission of corresponding second time slot.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
The upstream data transmission in stator frame that step A1. sends downlink signaling instruction first carrier is only limitted to
Second time slot.
The essence of above-mentioned aspect is that in the part sub-frame of uplink on first carrier, ascending physical signal layer data can only be in correspondence
The time-domain transmission of second time slot；In other sub-frame of uplink, ascending physical signal layer data can be between corresponding first time slot and protection
Every time-domain transmission.
As one embodiment, the downlink signaling is RRC (Radio Resource Control, wireless resource management)
Signaling.As one embodiment, the downlink signaling is physical layer signaling.As one embodiment, on the downlink signaling is
One of row dispatch DCI (Downlink Control Information, Downlink Control Information) format { 0,4 }.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps before the step A:
Step 0. receives feeding back signaling and determines that adjacent base station is listened in first time slot to stator frame.
As one embodiment, the feeding back signaling indicates the pattern for listening to time slot of the adjacent base station.
Specifically, according to an aspect of the present invention, which is characterized in that the return path signal indicates at least one of:
It is described to be used for transmission ascending physical signal layer data to stator frame
The cell physics ID of the transmission cell of the return path signal
Operator identifier belonging to the transmission base station of the return path signal
The transmission power of the return path signal.
As one embodiment, the sequence of the return path signal is a ZadoffChu sequence.As one embodiment,
The sequence of the return path signal is a pseudo-random sequence.The cell physics ID is the positive integer between 0~503.As one
A embodiment, the operator identifier are MNC (Mobile Network Code, Mobile Network Codes).
Specifically, according to an aspect of the present invention, which is characterized in that the time of the protection interval cuts not less than described
It changes time slot and adds the total time for listening to time slot.
As one embodiment, the time slot of listening to is 615Ts.
The invention discloses a kind of methods in base station, wherein includes the following steps:
Step A. detects return path signal in the first time slot to stator frame on first carrier
Step B. gives stator frame holding zero transmission power described in determining on first carrier
Wherein, the time span of the first time slot is that 1 or 2 multicarrier symbols subtract protection interval, first carrier portion
It is deployed on unlicensed spectrum, the time of the protection interval is not less than switching time slot.
As one embodiment, the time span of the first time slot isThe X is greater than
1 positive integer.
Specifically, according to an aspect of the present invention, which is characterized in that the return path signal indicates at least one of:
It is described to be used for transmission ascending physical signal layer data to stator frame
The cell physics ID of the transmission cell of the return path signal
Operator identifier belonging to the transmission base station of the return path signal
The transmission power of the return path signal.
As one embodiment, the return path signal received is repeated to transform to later for X-1 times in the time domain by the base station
Frequency domain obtains the sequence of the return path signal, judges that the return path signal is one group of candidate in the correlation of basis and local sequence
Characteristic sequence in it is specific which.
The invention discloses a kind of methods in UE, wherein includes the following steps:
Step A. receives downlink signaling and determines when being only limitted to second to the upstream data transmission in stator frame of first carrier
Gap
Step B. on first carrier described in stator frame the second time slot in send ascending physical signal layer data
Wherein, the time span of the second time slot is to subtract 1 or 2 time to removing SRS symbol in stator frame
A multicarrier symbol, first carrier are deployed in unlicensed spectrum.
As one embodiment, the downlink signaling is RRC signaling.As one embodiment, the downlink signaling is object
Manage layer signaling.As one embodiment, the downlink signaling is one of uplink scheduling signaling DCI format { 0,4 }.As one
A embodiment, the time span of the second time slot are described to subtract 1 multicarrier symbol to stator frame.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. is listened in time slot in listening to for first carrier to determine and carry out uplink transmission in the second time slot, described to detect
Time slot is listened to be located in the protection interval of stator frame
Wherein, described includes the first time slot, the protection interval, the second time slot, the first time slot to stator frame in the time domain
Overall length with the protection interval is 1 or 2 multicarrier symbols, and the time of the protection interval adds not less than switching time slot
On listen to total time of time slot.
As one embodiment, the switching time slot is 624Ts, for accommodating reception/transmission switching of the UE.
The invention discloses a kind of methods in UE, wherein includes the following steps:
Step A. is listened in time slot in listening to for first carrier to determine and carry out uplink transmission in the second time slot, described to detect
Time slot is listened to be located in the protection interval of stator frame
Step B. on first carrier described in stator frame the second time slot in send ascending physical signal layer data
Wherein, described includes the first time slot, the protection interval, the second time slot, the first time slot to stator frame in the time domain
Overall length with the protection interval is 1 or 2 multicarrier symbols, and the time of the protection interval adds not less than switching time slot
On listen to total time of time slot, first carrier is deployed in unlicensed spectrum.
The invention discloses a kind of base station equipments, which is characterized in that the equipment includes:
First module: for sending return path signal in the first time slot to stator frame on first carrier
Second module: for described on first carrier to receiving ascending physical signal layer data in the second time slot of stator frame
Wherein, described includes the first time slot, protection interval, the second time slot, the first time slot and guarantor to stator frame in the time domain
The overall length at shield interval is 1 or 2 multicarrier symbols, and first carrier is deployed in unlicensed spectrum, the protection interval when
Between not less than switching time slot, the base station is kept in the protection interval of first carrier zero send power.
As one embodiment, above equipment further include:
Third module: it is sent only described in downlink signaling instruction first carrier to the upstream data in stator frame for sending
It is limited to the second time slot.
As one embodiment, the return path signal indicates at least one of:
It is described to be used for transmission ascending physical signal layer data to stator frame
The cell physics ID of the transmission cell of the return path signal
Operator identifier belonging to the transmission base station of the return path signal
The transmission power of the return path signal.
As one embodiment, time of the protection interval added not less than the switching time slot listen to time slot it is total when
Between.
The invention discloses a kind of base station equipments, which is characterized in that the equipment includes:
First module: for detecting return path signal in the first time slot to stator frame on first carrier
Second module: for determine on first carrier described in give stator frame keep zero send power
Wherein, the time span of the first time slot is that 1 or 2 multicarrier symbols subtract protection interval, first carrier portion
It is deployed on unlicensed spectrum, the time of the protection interval is not less than switching time slot.
As one embodiment, the return path signal indicates at least one of:
It is described to be used for transmission ascending physical signal layer data to stator frame
The cell physics ID of the transmission cell of the return path signal
Operator identifier belonging to the transmission base station of the return path signal
The transmission power of the return path signal.
As one embodiment, time of the protection interval added not less than the switching time slot listen to time slot it is total when
Between.
The invention discloses a kind of user equipmenies, which is characterized in that the equipment includes:
First module: being only limitted to the upstream data transmission in stator frame for first carrier is determined for receiving downlink signaling
Second time slot
Second module: for described on first carrier to sending ascending physical signal layer data in the second time slot of stator frame
Wherein, the time span of the second time slot is to subtract 1 or 2 time to removing SRS symbol in stator frame
A multicarrier symbol, first carrier are deployed in unlicensed spectrum.
As one embodiment, above equipment is characterized in that, the equipment further include:
Third module: listening in time slot in listening to for first carrier to determine and carry out uplink transmission in the second time slot, described
Time slot is listened to be located in the protection interval of stator frame
Wherein, described includes the first time slot, the protection interval, the second time slot, the first time slot to stator frame in the time domain
Overall length with the protection interval is 1 or 2 multicarrier symbols, and the time of the protection interval adds not less than switching time slot
On listen to total time of time slot.
As one embodiment, the return path signal indicates at least one of:
It is described to be used for transmission ascending physical signal layer data to stator frame
The cell physics ID of the transmission cell of the return path signal
Operator identifier belonging to the transmission base station of the return path signal
The transmission power of the return path signal.
The invention discloses a kind of user equipmenies, which is characterized in that the equipment includes:
First module: for being listened in time slot in listening to for first carrier to determine and carry out uplink transmission in the second time slot,
The time slot of listening to is located in the protection interval of stator frame
Second module: for described on first carrier to sending ascending physical signal layer data in the second time slot of stator frame
Wherein, described includes the first time slot, the protection interval, the second time slot, the first time slot to stator frame in the time domain
Overall length with the protection interval is 1 or 2 multicarrier symbols, and the time of the protection interval adds not less than switching time slot
On listen to total time of time slot, first carrier is deployed in unlicensed spectrum.
For TDD LAA, believe when neighbouring LAA system executes LBT in the reception that sub-frame of uplink and downlink subframe detect
Number power may differ by very big (base station is to the interference of base station much larger than interference of the UE to base station), therefore neighbouring LAA system is very
The sub-frame of uplink of TDD LAA may be occupied, to cause biggish interference.In view of the above-mentioned problems, the invention discloses a kind of LAA
The method and apparatus avoided are interfered, base station sends return path signal to indicate the subframe to the sub-frame of uplink in sub-frame of uplink
It occupies, adjacent base station detects that the return path signal will not then occupy the sub-frame of uplink.The above method ensures uplink signal not
By the signal interference of adjacent base station.In addition, the present invention has been compatible with existing LTE standard, there is 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 flow chart of transmission ascending physical signal layer data according to an embodiment of the invention；
Fig. 2 shows the structure charts according to an embodiment of the invention to stator frame；
Fig. 3 shows the structure chart of protection interval according to an embodiment of the invention；
Fig. 4 shows the structural block diagram of the processing unit in base station according to an embodiment of the invention；
Fig. 5 shows the structural block diagram of the processing unit in base station according to still another embodiment of the invention；
Fig. 6 shows the structural block diagram of the processing unit in UE according to an embodiment of the invention；
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with attached drawing, it should be noted that do not rushing
In the case where prominent, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Embodiment 1
Embodiment 1 illustrates the flow chart of transmission ascending physical signal layer data, as shown in Fig. 1.In attached drawing 1, base station N1 is
The serving BS of UE U2, base station N3 are the neighbor base stations of base station N1.The step of wherein identifying in box F1 and F2 is optional step
Suddenly.
For base station N1, in step s 11, communication is sent back in the first time slot to stator frame on first carrier
Number；In step s 12, on first carrier described in stator frame the second time slot in receive ascending physical signal layer data.
For UE U2, in step S22, on first carrier described in sending uplink in the second time slot of stator frame
Physical layer data.
For base station N3, in step S31, passback letter is detected in the first time slot to stator frame on first carrier
Number；In step s 32, zero is kept to send power to stator frame described in determining on first carrier.
In embodiment 1, described include the first time slot, protection interval, the second time slot, the first time slot to stator frame in the time domain
Overall length with protection interval is 1 or 2 multicarrier symbols, and first carrier is deployed in unlicensed spectrum, the protection interval
Time not less than switching time slot, the base station is kept in the protection interval of first carrier zero send power.
As the sub- embodiment 1 of embodiment 1, base station N1 in step slo, send downlink signaling instruction first carrier to
Upstream data transmission in stator frame is only limitted to the second time slot；UE U2 receives downlink signaling and determines the first load in step S20
Wave is only limitted to the second time slot to the upstream data transmission in stator frame.The downlink signaling is physical layer signaling or upper layer letter
It enables.
As the sub- embodiment 2 of embodiment 1, UE U2 in the step s 21, first carrier listen to listened in time slot with
It determines and carries out uplink transmission in the second time slot, the time slot of listening to is located in the protection interval of stator frame.The protection interval
Time added not less than switching time slot and listen to total time of time slot.
As the sub- embodiment 3 of embodiment 1, the return path signal indicates at least one of:
It is described to be used for transmission ascending physical signal layer data to stator frame
The cell physics ID of the transmission cell of the return path signal
Operator identifier belonging to the transmission base station of the return path signal
The transmission power of the return path signal.
As the sub- embodiment 4 of embodiment 1, the overall length of the first time slot and protection interval is 1 multicarrier symbol, i.e.,
2192Ts。
Embodiment 2
Embodiment 2 illustrates the structure chart to stator frame in the present invention, as shown in Fig. 2.In attached drawing 2, give
Subframe includes the first time slot (oblique line mark), protection interval (blank mark), the second time slot (backslash mark), (friendship of SRS symbol
Cross wires mark).Wherein SRS symbol is optional, and the corresponding time distributes to the second time slot if SRS symbol is not present.
In embodiment 2, the overall length of the first time slot and protection interval is 1 or 2 multicarrier symbols, first carrier deployment
In unlicensed spectrum, the time of the protection interval, the base station was between the protection of first carrier not less than switching time slot
Zero is kept to send power every upper.
As the sub- embodiment 1 of embodiment 2, the time span of the first time slot isIt is described
X is 2 positive integer power.
As the sub- embodiment 2 of embodiment 2, the overall length of the first time slot and protection interval is 1 multicarrier symbol, when second
Gap is (for common CP) 13 multicarrier symbols or (for extending CP) 11 multicarrier symbols.
Embodiment 3
Embodiment 3 illustrates the structure chart of the protection interval in the present invention, as shown in Fig. 3.In attached drawing 3, protection
Interval includes listening to time slot (oblique line mark) and switching time slot (backslash mark).
For the transmission base station of return path signal, the protection interval is described to listen to for UE for sending/receiving switching
Time slot determines whether progress uplink transmission for listening to, and the switching time slot is for receiving/sending switching.
As the sub- embodiment 1 of embodiment 3, the protection interval isThe X is 2
Positive integer power.
Embodiment 4
Embodiment 4 illustrates the structural block diagram of the processing unit in base station, as shown in Fig. 4.In attached drawing 4, processing unit
200 are made of receiving module 201, sending module 202 and receiving module 203.Wherein receiving module 201 is optional module.
Sending module 202 is for sending return path signal in the first time slot to stator frame on first carrier；Receive mould
Block 203 for described on first carrier to receiving ascending physical signal layer data in the second time slot of stator frame.
In embodiment 4, described include the first time slot, protection interval, the second time slot, the first time slot to stator frame in the time domain
Overall length with protection interval is 1 or 2 multicarrier symbols, and first carrier is deployed in unlicensed spectrum, the protection interval
Time not less than switching time slot, the base station is kept in the protection interval of first carrier zero send power.
As the sub- embodiment 1 of embodiment 4, sending module 202 is also used to send the institute of downlink signaling instruction first carrier
It states and is only limitted to the second time slot to the upstream data transmission in stator frame.
As the sub- embodiment 2 of embodiment 4, processing unit 200 further includes that receiving module 201 is true for receiving feeding back signaling
Determine adjacent base station to listen in first time slot to stator frame.
As the sub- embodiment 3 of embodiment 4, the return path signal indicates at least one of:
The cell physics ID of the transmission cell of the return path signal
The transmission power of the return path signal.
Embodiment 5
Embodiment 5 illustrates the structural block diagram of the processing unit in another base station, as shown in Fig. 5.In attached drawing 5, place
Reason device 300 is made of receiving module 301 and determining module 302.
Receiving module 301 is for detecting return path signal in the first time slot to stator frame on first carrier；It determines
Module 302 gives stator frame holding zero transmission power described in being used to determine on first carrier.
In embodiment 5, the time span of the first time slot is 1 or 2 multicarrier symbols subtract protection interval, and first carries
Wave is deployed in unlicensed spectrum, and the time of the protection interval is not less than switching time slot.
As the sub- embodiment 1 of embodiment 5, receiving module 301 detects the letter of the reception on first carrier in the first slot
Number power, the received signal power are greater than specific threshold i.e. determination and detect return path signal, and the specific threshold is pre-determining
Or be configurable.
As the sub- embodiment 2 of embodiment 5, receiving module 301 receives the sample sequence after removal CP in the first slot,
Sample sequence is repeated into X-1 in time domain cyclic and constitutes complete sequence all over the sample sequence tail portion is cascaded to, to complete sequence into
To frequency domain data, the valid data that every X carrier wave extracts a carrier wave (correspond to zero to send row FFT operation recovery on other carrier waves
Power), according to valid data determine the return path signal entrained by information.
Embodiment 6
Embodiment 6 illustrates the structural block diagram of the processing unit in UE, as shown in Fig. 6.In attached drawing 6, processing unit 400
It is made of receiving module 401 and sending module 402.
Receiving module 401 is used at least one of:
It receives downlink signaling and determines that sending to the upstream data in stator frame for first carrier is only limitted to the second time slot
It is described to listen to for being listened in time slot in listening to for first carrier to determine and carry out uplink transmission in the second time slot
Time slot is located in the protection interval of stator frame.
Sending module 402 for described on first carrier to sending the ascending physical signal number of plies in the second time slot of stator frame
According to
In embodiment 6, described include the first time slot to stator frame in the time domain, the protection interval, the second time slot, and first
The overall length of time slot and the protection interval is 1 or 2 multicarrier symbols, when the time of the protection interval is not less than switching
Gap adds the total time for listening to time slot, and first carrier is deployed in unlicensed spectrum.
As the sub- embodiment 1 of embodiment 6, the downlink signaling is the physical layer scheduling signaling to stator frame, is adjusted
Spend the transmission of the ascending physical signal layer data.The downlink signaling is the flag bit that 1 bit is added on DCI format 0 or 4,
Whether the flag bit instruction first carrier is only limitted to the second time slot to the upstream data transmission in stator frame.
As the sub- embodiment 2 of embodiment 6, the downlink signaling is RRC signaling.
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 (8)
1. a kind of method in base station, wherein include the following steps:
Step A. sends return path signal, the target of the return path signal in the first time slot to stator frame on first carrier
Recipient is adjacent base station；
Step B. on first carrier described in stator frame the second time slot in receive ascending physical signal layer data；
Wherein, described includes the first time slot, protection interval, the second time slot, between the first time slot and protection to stator frame in the time domain
Every overall length be 1 or 2 multicarrier symbols, first carrier is deployed in unlicensed spectrum, and the time of the protection interval is not
Lower than switching time slot, the base station keeps zero transmission power in the protection interval of first carrier；The return path signal refers to
Show at least one of:
It is described to be used for transmission ascending physical signal layer data to stator frame；
The cell physics ID of the transmission cell of the return path signal；
Operator identifier belonging to the transmission base station of the return path signal；
The transmission power of the return path signal.
2. the method according to claim 1, wherein the step A further includes following steps:
The upstream data transmission in stator frame that step A1. sends downlink signaling instruction first carrier is only limitted to second
Time slot.
3. according to the method described in claim 2, it is characterized in that, further including following steps before the step A:
Step 0. receives feeding back signaling and determines that adjacent base station is listened in first time slot to stator frame.
4. method according to claim 1 or 2, which is characterized in that the time of the protection interval is not less than the switching
Time slot adds the total time for listening to time slot.
5. a kind of method in base station, wherein include the following steps:
Step A. detects return path signal, the hair of the return path signal in the first time slot to stator frame on first carrier
The person of sending is adjacent base station；
Step B. gives stator frame holding zero transmission power described in determining on first carrier；
Wherein, the time span of the first time slot is that 1 or 2 multicarrier symbols subtract protection interval, and first carrier is deployed in
Unlicensed spectrum, the time of the protection interval is not less than switching time slot；The return path signal indicates at least one of:
It is described to be used for transmission ascending physical signal layer data to stator frame；
The cell physics ID of the transmission cell of the return path signal；
Operator identifier belonging to the transmission base station of the return path signal；
The transmission power of the return path signal.
6. a kind of base station equipment, which is characterized in that the equipment includes:
First module: for sending return path signal, the return path signal in the first time slot to stator frame on first carrier
Target receiver be adjacent base station；
Second module: for described on first carrier to receiving ascending physical signal layer data in the second time slot of stator frame；
Wherein, described includes the first time slot, protection interval, the second time slot, between the first time slot and protection to stator frame in the time domain
Every overall length be 1 or 2 multicarrier symbols, first carrier is deployed in unlicensed spectrum, and the time of the protection interval is not
Lower than switching time slot, the base station keeps zero transmission power in the protection interval of first carrier；The return path signal refers to
Show at least one of:
It is described to be used for transmission ascending physical signal layer data to stator frame；
The cell physics ID of the transmission cell of the return path signal；
Operator identifier belonging to the transmission base station of the return path signal；
The transmission power of the return path signal.
7. equipment according to claim 6, which is characterized in that the equipment further include:
Third module: it is only limitted to described in downlink signaling instruction first carrier to the upstream data transmission in stator frame for sending
Second time slot.
8. a kind of base station equipment, which is characterized in that the equipment includes:
First module: for detecting return path signal, the passback letter in the first time slot to stator frame on first carrier
Number sender be adjacent base station；
Second module: for determine on first carrier described in give stator frame keep zero send power；
Wherein, the time span of the first time slot is that 1 or 2 multicarrier symbols subtract protection interval, and first carrier is deployed in
Unlicensed spectrum, the time of the protection interval is not less than switching time slot；The return path signal indicates at least one of:
It is described to be used for transmission ascending physical signal layer data to stator frame；
The cell physics ID of the transmission cell of the return path signal；
Operator identifier belonging to the transmission base station of the return path signal；
The transmission power of the return path signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410378225.0A CN105323854B (en) | 2014-08-03 | 2014-08-03 | A kind of method and apparatus that LAA interference avoids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410378225.0A CN105323854B (en) | 2014-08-03 | 2014-08-03 | A kind of method and apparatus that LAA interference avoids |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105323854A CN105323854A (en) | 2016-02-10 |
| CN105323854B true CN105323854B (en) | 2019-09-06 |
Family
ID=55250241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410378225.0A Active CN105323854B (en) | 2014-08-03 | 2014-08-03 | A kind of method and apparatus that LAA interference avoids |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105323854B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241800A (en) * | 2016-03-29 | 2017-10-10 | 北京信威通信技术股份有限公司 | Transmission method and device |
| WO2017166228A1 (en) * | 2016-03-31 | 2017-10-05 | 华为技术有限公司 | Wireless communication method, base station, and terminal |
| CN109076350B (en) * | 2016-05-04 | 2021-10-01 | 华为技术有限公司 | Uplink transmission method and device based on authorization-assisted access LAA system |
| CN107787012B (en) * | 2016-08-31 | 2021-10-29 | 中国移动通信有限公司研究院 | Interference processing method and base station |
| CN108880768B (en) | 2017-05-12 | 2021-04-20 | 华为技术有限公司 | Signal transmission method and device |
| CN111355565B (en) * | 2018-12-24 | 2021-06-25 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| WO2021035595A1 (en) * | 2019-08-29 | 2021-03-04 | Qualcomm Incorporated | Configuring guard intervals for multiple uplink carriers |
| WO2021051253A1 (en) * | 2019-09-17 | 2021-03-25 | Qualcomm Incorporated | Uplink transmission interruption for uplink carrier switching based at least in part on channel priority |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651848A (en) * | 2008-08-14 | 2010-02-17 | 展讯通信（上海）有限公司 | DTX-DRX information cell, DTX-DRX timing information cell, DTX processing method and DRX processing method |
| WO2012141463A2 (en) * | 2011-04-11 | 2012-10-18 | 엘지전자 주식회사 | Method and device for transmitting a signal in a mobile communication system |
| CN103428712A (en) * | 2012-05-16 | 2013-12-04 | 华为技术有限公司 | Interception method and node |
| CN103796212A (en) * | 2012-10-26 | 2014-05-14 | 上海贝尔股份有限公司 | Communication method |
-
2014
- 2014-08-03 CN CN201410378225.0A patent/CN105323854B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651848A (en) * | 2008-08-14 | 2010-02-17 | 展讯通信（上海）有限公司 | DTX-DRX information cell, DTX-DRX timing information cell, DTX processing method and DRX processing method |
| WO2012141463A2 (en) * | 2011-04-11 | 2012-10-18 | 엘지전자 주식회사 | Method and device for transmitting a signal in a mobile communication system |
| CN103428712A (en) * | 2012-05-16 | 2013-12-04 | 华为技术有限公司 | Interception method and node |
| CN103796212A (en) * | 2012-10-26 | 2014-05-14 | 上海贝尔股份有限公司 | Communication method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105323854A (en) | 2016-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105323854B (en) | A kind of method and apparatus that LAA interference avoids | |
| CN105656607B (en) | A kind of communication means and device of LAA system | |
| CN105681006B (en) | A kind of method and apparatus of LAA communication | |
| CN105530080B (en) | LAA transmission methods and device in a kind of cellular communication | |
| CN102624489B (en) | Enhanced control channel transmission method, device and system | |
| CN106936558B (en) | Enhanced sounding reference signal mapping method and device | |
| CN105636206B (en) | A kind of LAA listens to resource allocation methods and device | |
| CN109891940B (en) | Implementing multiple parameter sets in a network | |
| EP2919538A1 (en) | Terminal device, communication method and integrated circuit | |
| CN106797288B (en) | Hybrid waveform design combining OFDM and cyclic prefix-based single carrier for millimeter wave wireless communication | |
| CN109906655A (en) | Improved two stages authorization in unlicensed cell | |
| CN105306180B (en) | A kind of LAA communication means and device | |
| CN113329485A (en) | Information transmission method and information transmission device | |
| EP2373106A1 (en) | Resource mapping methods for control channels | |
| WO2017113514A1 (en) | Data transmission method and user equipment | |
| CN105981461B (en) | Base station apparatus, terminal installation and communication means | |
| KR102206362B1 (en) | Method of transmitting and receiving information, user equipment and base station | |
| CN110166216B (en) | LAA resource allocation method and device | |
| CN108235442A (en) | A kind of method and apparatus in UE, base station | |
| CN106877984B (en) | A kind of method and apparatus in narrowband wireless transmission | |
| CN107819714B (en) | Method and equipment in UE (user equipment) supporting variable subcarrier spacing and base station | |
| CN106789826A (en) | Downlink transfer detection method, base station and terminal | |
| CN105376849A (en) | LAA method in cellular communication and apparatus thereof | |
| CN106034097A (en) | Interference eliminating method and device in full-duplex communication | |
| CN106534001A (en) | Low-delay wireless communication method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |