CN105376865B - Resource regulating method, device and the base station of co-channel full duplex in-door covering simultaneously - Google Patents
Resource regulating method, device and the base station of co-channel full duplex in-door covering simultaneously Download PDFInfo
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Abstract
The invention discloses resource regulating method, device and the base stations of a kind of co-channel full duplex in-door covering simultaneously, the pilot signal strength sent to the user terminal that multiple room divided antennas receive is estimated, the interference strength between user terminal is determined according to the distributing position information of pilot signal strength and multiple room divided antennas, the frequency point or time slot that the transmission of user terminal uplink and downlink data uses are determined according to interference strength, reduce the interference of sending and receiving data between user terminal.The resource regulating method of co-channel full duplex in-door covering, device and base station while of the invention, user's pilot signal strength is received by different antennae, inter-user interference intensity is judged in conjunction with allocating antenna position, then user's uplink and downlink resource is scheduled according to inter-user interference power, to reduce inter-user interference, the spectrum efficiency of co-channel full duplex system in-door covering simultaneously is promoted.
Description
Technical field
The present invention relates to mobile network's technical fields, more particularly to a kind of resource tune of co-channel full duplex in-door covering simultaneously
Spend method, apparatus and base station.
Background technique
Long term evolution LTE wireless communication system has become the mobile communication system of the following mainstream, the CDMA of it and 3G without
Line communication system is compared, and system spectral efficiency is further improved, and improves user data-throughput.It is continuous however as user
The development of the data requirements and wireless technology of raising, rear LTE system research also have begun.With frequency full duplex system conduct simultaneously
A kind of new duplex communication form is transmitted by uplink and downlink using identical running time-frequency resource, and relatively existing FDD/TDD-LTE is bis-
Its performance gain of work mode is obviously improved.However, due to user at the same time co-channel full duplex uplink and downlink using same asset into
The transmission of row data, therefore there are obvious interference between user, it is desirable to reduce the same frequency between multi-user receives and dispatches interference, promotes room
The spectrum efficiency of interior covering system.
Summary of the invention
In view of this, the invention solves a technical problem be to provide a kind of co-channel full duplex in-door covering simultaneously
Resource regulating method judges inter-user interference intensity by pilot signal strength combination aerial position.
A kind of while co-channel full duplex in-door covering resource regulating method includes: to receive to multiple room divided antennas
The pilot signal strength that user terminal is sent is estimated；According to the distribution position of pilot signal strength and the multiple room divided antenna
Confidence ceases the interference strength determined between user terminal；Determine that user terminal uplink and downlink data are transmitted according to the interference strength
The frequency point or time slot of use reduce the interference of sending and receiving data between user terminal.
According to one embodiment of present invention, further, the multiple room divided antenna receives indoor user terminal hair
The pilot frequency information sent, estimates according to pilot signal strength, determines the room point that the transmission of user terminal uplink and downlink data uses
Antenna；The distributing position information of the room divided antenna according to used in user terminal and preset the multiple room divided antenna determines
Interference strength between user terminal；Wherein, the distributing position information of the multiple room divided antenna includes: what room divided antenna was arranged
Position, floor, room number and room divided antenna indoor mesh point information.
According to one embodiment of present invention, further, judged between user terminal according to preset interference rule
Interference strength；When judging that interference strength to be strong and when having multifrequency point, then distributes different user terminals different frequency points
Data are transmitted, and distributes identical frequency point to the uplink and downlink data of the same user terminal and transmits；When judging that interference strength is
It is weak and when there is multifrequency point, then identical frequency point is distributed to different user terminal and transmit data, and to the same user
The uplink and downlink data of terminal distribute different frequency point transmission.
According to one embodiment of present invention, further, when judge interference strength to be strong and when there is single-frequency point,
Different slot transmission data are then distributed different user terminals, and to the uplink and downlink data of the same user terminal point
With identical slot transmission；When judging that interference strength to be weak and when having single-frequency point, then distributes phase to different user terminal
Same slot transmission data, and different slot transmissions is distributed to the uplink and downlink data of the same user terminal.
According to one embodiment of present invention, further, the interference rule includes: when user terminal is using identical
When room divided antenna transmits and is located at identical room, then interference strength is strong；When user terminal is passed using identical room divided antenna
It is defeated and be located at different floors when, then interference strength be it is weak；When user terminal is transmitted using different room divided antennas and is located at same
When one room, then interference strength is strong；When user terminal is transmitted using different room divided antennas and is located at different rooms,
Then interference strength is weak.
The invention solves a technical problem be to provide the scheduling of resource of co-channel full duplex in-door covering simultaneously a kind of
Device judges inter-user interference intensity by pilot signal strength combination aerial position.
A kind of while co-channel full duplex in-door covering resource scheduling device, comprising: signal strength estimation unit, for pair
The pilot signal strength that the user terminal that multiple room divided antennas receive is sent is estimated；Interference strength judging unit, is used for
The interference strength between user terminal is determined according to the distributing position information of pilot signal strength and the multiple room divided antenna；Frequently
Point time slot allocating unit, for according to the interference strength determine user terminal uplink and downlink data transmission use frequency point or when
Gap reduces the interference of sending and receiving data between user terminal.
According to one embodiment of present invention, further, the multiple room divided antenna receives indoor user terminal hair
The pilot frequency information sent, the signal strength estimation unit is estimated according to pilot signal strength, determines that user terminal is upper and lower
Row data transmit the room divided antenna used；Interference strength judging unit room divided antenna according to used in user terminal and
The distributing position information of preset the multiple room divided antenna determines the interference strength between user terminal；Wherein, the multiple
The distributing position information of room divided antenna includes: the indoor net of position, floor, room number and room divided antenna that room divided antenna is arranged
Lattice point information.
According to one embodiment of present invention, further, the interference strength judging unit is advised according to preset interference
Then judge the interference strength between user terminal；When the interference strength judging unit judges interference strength to be strong and have
When multifrequency point, then the frequency point time slot allocating unit distributes different frequency points to different user terminals and transmits data, and right
The uplink and downlink data of the same user terminal distribute identical frequency point transmission；When the interference strength judging unit judges to interfere
Intensity is weak and when having multifrequency point, then the frequency point time slot allocating unit distributes identical frequency to different user terminal
Point transmission data, and distribute different frequency points to the uplink and downlink data of the same user terminal and transmit.
According to one embodiment of present invention, further, when the interference strength judging unit judges that interference strength is
When by force and having single-frequency point, then the frequency point time slot allocating unit distributes different user terminals different slot transmissions
Data, and identical slot transmission is distributed to the uplink and downlink data of the same user terminal；When the interference strength judges list
Member judge that interference strength is weak and when with single-frequency point, then the frequency point time slot allocating unit divides different user terminals
Different slot transmissions is distributed with identical slot transmission data, and to the uplink and downlink data of the same user terminal.
A kind of base station, comprising: the resource scheduling device of co-channel full duplex in-door covering while as described above.
The resource regulating method of co-channel full duplex in-door covering, device and base station, pass through different antennae while of the invention
User's pilot signal strength is received, inter-user interference intensity is judged in conjunction with allocating antenna position, then according to inter-user interference
Power is scheduled user's uplink and downlink resource, to reduce inter-user interference, is promoted and is covered in co-channel full duplex system chambers simultaneously
The spectrum efficiency of lid.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the present invention, for those of ordinary skill in the art, without any creative labor, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the stream according to one embodiment of the resource regulating method of co-channel full duplex in-door covering while the present invention
Cheng Tu；
Fig. 2 is according to another embodiment of the resource regulating method of co-channel full duplex in-door covering while the present invention
Flow chart
Fig. 3 A is the perspective view of indoor mesh point schematic diagram, and Fig. 3 B is the top view of indoor mesh point schematic diagram；
Fig. 4 A is frequency domain dispatching schematic diagram, domain scheduling schematic diagram when Fig. 4 B is；
Fig. 5 is to be shown according to one embodiment of the resource scheduling device of co-channel full duplex in-door covering while the present invention
It is intended to；
Fig. 6 is the schematic diagram of one embodiment of base station according to the present invention.
Specific embodiment
With reference to the accompanying drawings to invention is more fully described, wherein illustrating exemplary embodiment of the present invention.Under
Face will combine the attached drawing in the embodiment of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, show
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.Various descriptions are carried out to technical solution of the present invention below with reference to each figure and embodiment.
Fig. 1 is the stream according to one embodiment of the resource regulating method of co-channel full duplex in-door covering while the present invention
Cheng Tu, as shown in Figure 1:
Step 101, the pilot signal strength sent to the user terminal that multiple room divided antennas receive is estimated.
Step 102, it is determined between user terminal according to the distributing position information of pilot signal strength and multiple room divided antennas
Interference strength.
Step 103, the frequency point or time slot that the transmission use of user terminal uplink and downlink data is determined according to interference strength, reduce
The interference of sending and receiving data between user terminal.
The resource regulating method of co-channel full duplex in-door covering while of the invention, using simultaneously co-channel full duplex technology into
Row in-door covering, and channel estimation is carried out by the received UE ascending pilot channel of different antennae, and then subtract by scheduling of resource
Same frequency between few multi-user receives and dispatches interference, promotes the spectrum efficiency of indoor covering system.
In one embodiment, multiple room divided antennas receive the pilot frequency information that indoor user terminal is sent, according to leading
Frequency signal strength is estimated, determines that user terminal uplink and downlink data transmit the room divided antenna used.
The distributing position information of the room divided antenna according to used in user terminal and preset multiple room divided antennas determines
Interference strength between user terminal.The distributing position information of multiple room divided antennas includes: the position of room divided antenna setting, building
The indoor mesh point information of floor, room number and room divided antenna.
In one embodiment, the interference strength between user terminal is judged according to preset interference rule.When judgement is dry
Disturbing intensity is strong and when having multifrequency point, then distributes different frequency points to different user terminals and transmit data, and to same
The uplink and downlink data of one user terminal distribute identical frequency point transmission.
When judging that interference strength to be weak and when having multifrequency point, then distributes identical frequency point to different user terminal
Data are transmitted, and distributes different frequency points to the uplink and downlink data of the same user terminal and transmits.
In one embodiment, when judging interference strength to be strong and when there is single-frequency point, then to different user terminals
Different slot transmission data are distributed, and distribute identical slot transmission to the uplink and downlink data of the same user terminal.
When judging that interference strength to be weak and when having single-frequency point, then distributes identical time slot to different user terminal
Data are transmitted, and distribute different slot transmissions to the uplink and downlink data of the same user terminal.
Fig. 2 is according to another embodiment of the resource regulating method of co-channel full duplex in-door covering while the present invention
Flow chart, as shown in Figure 2:
Step 201, in full duplex system receiving chamber communication user pilot frequency information.
Step 202, system estimates user's pilot signal strength that different antennae receives.
Step 203: the subscriber signal intensity and different antennae deployed position that system is received according to different antennae, really
Determine position between user.
Step 204, system determines interference strength between user by position between user.
Step 205: system is used interfering the uplink and downlink of stronger user to be sent using identical frequency point/time slot between each other
It is sent between family using different frequent points/time slot.
Step 206: the uplink and downlink of the system user weaker to mutual interference is sent using different frequent points/time slot, is used
Uplink and downlink is sent using identical frequency point/time slot between family.
In one embodiment, as shown in Figure 3A and Figure 3B, it is provided with multiple room divided antennas in a building, will build
The floor for building object divides square lattice one by one into and numbers, number 1,2 etc., records aerial position for grid number, then
The number of these grid is the indoor mesh point information of room divided antenna.Room can be set for the distributing position information of room divided antenna
Interior distribution antenna position table, such as the following table 1.
| Aerial position | Floor | Room | Grid point locations |
| Building A | 2 | 201 | 1 |
Table 1- indoor distribution antenna position table
According to different antennae deployed position, position between user is determined, judged between user terminal according to interference rule
Degree of disturbance.It can be according to specific system and deployment setting interference rule.
For example, interference rule includes: when user terminal is using identical room divided antenna transmission data and positioned at identical room
Between when, then interference strength is strong.When user terminal is transmitted using identical room divided antenna and is located at different floors, due to having
The mutual interference decline of the barrier of floor, then interference strength is weak,.
When user terminal is transmitted using different room divided antennas and is located at same room, then interference strength is strong.Such as
One user terminal is 1 using the mesh point of antenna, another user terminal is 3 using the mesh point of antenna, although antenna
Mesh point is different, but in same room with them, and it is stronger that two terminals are regarded as interference.When user terminal uses different room point
Antenna transmission and when being located at different rooms, for example, such as user terminal is 2 using the mesh point of antenna, another use
Family terminal is 4,2 antennas in different rooms using the mesh point of antenna, then two terminals are regarded as interference strength and are
It is weak.It can also be repeated no more herein according to the multiple interference rules of specifically used scene setting.
In one embodiment, such as Fig. 4 A, shown in 4B, when system detects that user exists between each other according to aerial position
When serious interference, such as UE1 and UE2 user, since two users are under the covering of identical room divided antenna, system passes through day
The received signal strength and aerial position of line, which correspond to table, may determine that UE1 and UE2 user has strong interference, at this time if system
Have multiple frequency points, such as f1 and f2 two frequency bins, then the uplink and downlink signals of UE1 can be sent and all dispatch the UE2 on frequency point f1
Uplink and downlink signals send all scheduling on f2.Because frequency division reduces mutual interference between two such user, and UE1
There are uplink and downlink co-channel interferences can be disappeared by the simulation counteracting of co-channel full duplex system and digital cancellation simultaneously with UE2
It removes.
When detect inter-user interference it is less when, such as UE5 and UE6 user, due to two users distance farther out, it is not identical
Room divided antenna covering under, therefore system by the received signal strength and aerial position of antenna correspond to table may determine that UE5 with
UE6 user interfere each other it is weaker,, then can be by UE1's such as f1 and f2 two frequency bins at this time if system has multiple frequency points
Upper and lower row signal transmission is dispatched respectively on frequency point f1 and f2, and the uplink and downlink signals of UE2 send scheduling on f2 and f1.In this way
Because distance reduces mutual interference farther out between two users, simultaneously because uplink and downlink frequency point is different, use is decreased
Interference between the uplink and downlink at family itself.
In one embodiment, if system only one frequency point f1, can dispatch different use in different time sections
Family, and user's uplink and downlink is then transmitted using identical running time-frequency resource, such as the uplink and downlink signals of UE1 are sent all scheduling in time slot T1
On, the uplink and downlink signals of UE2 send all scheduling on T2.Because the time-division reduces mutual do between two such user
It disturbs, and there are uplink and downlink co-channel interferences can pass through the simulation counteracting of co-channel full duplex system and digital cancellation simultaneously by UE1 and UE2
It is eliminated.Based on same criterion, the user for interfering with each other lesser UE5 and UE6 can also be dispatched.
The present invention provides a kind of resource scheduling device of co-channel full duplex in-door covering simultaneously, as shown in figure 5, scheduling of resource
Device 3 includes: signal strength estimation unit 31, interference strength judging unit 32 and frequency point time slot allocating unit 33.
The pilot signal strength that the user terminal that signal strength estimation unit 31 receives multiple room divided antennas is sent into
Row estimation.Interference strength judging unit 32 determines user according to the distributing position information of pilot signal strength and multiple room divided antennas
Interference strength between terminal.Frequency point time slot allocating unit 33 determines that user terminal uplink and downlink data are transmitted according to interference strength
The frequency point or time slot of use reduce the interference of sending and receiving data between user terminal.
In one embodiment, multiple room divided antennas receive the pilot frequency information that indoor user terminal is sent, signal strength
Estimation unit 31 is estimated according to pilot signal strength, determines that user terminal uplink and downlink data transmit the room point day used
Line.The distribution of the room divided antenna according to used in user terminal of interference strength judging unit 32 and preset multiple room divided antennas
Location information determines the interference strength between user terminal.The distributing position information of multiple room divided antennas includes: that room divided antenna is set
The indoor mesh point information of position, floor, room number and the room divided antenna set.
In one embodiment, interference strength judging unit 32 judges between user terminal according to preset interference rule
Interference strength.When interference strength judging unit 32 judge interference strength to be strong and when there is multifrequency point, then frequency point time slot allocation
33 pairs of different user terminals of unit distribute different frequency point transmission data, and to the upper and lower line number of the same user terminal
It is transmitted according to identical frequency point is distributed.
When interference strength judging unit 32 judges interference strength for weak and when having multifrequency point, then frequency point time slot allocation
33 pairs of unit different user terminals distribute identical frequency point and transmit data, and to the upper and lower line number of the same user terminal
It is transmitted according to different frequency points is distributed.
In one embodiment, when interference strength judging unit 32 judge interference strength to be strong and when there is single-frequency point,
Then 33 pairs of different user terminals of frequency point time slot allocating unit distribute different slot transmission data, and whole to the same user
The uplink and downlink data at end distribute identical slot transmission.
When interference strength judging unit 32 judges interference strength for weak and when having single-frequency point, then frequency point time slot allocation
33 pairs of unit different user terminals distribute identical slot transmission data, and to the upper and lower line number of the same user terminal
According to the different slot transmission of distribution.
Fig. 6 is the schematic diagram of one embodiment of base station according to the present invention, with frequency while a kind of base station includes as above
The resource scheduling device of full duplex in-door covering.
The resource regulating method of co-channel full duplex in-door covering, device and base station while in above-described embodiment, by not
User's pilot signal strength is received with antenna, inter-user interference intensity is judged in conjunction with allocating antenna position, then according to user
Between interfere power to be scheduled user's uplink and downlink resource, to reduce inter-user interference, promote co-channel full duplex system simultaneously
The spectrum efficiency of in-door covering.
Method and system of the invention may be achieved in many ways.For example, can by software, hardware, firmware or
Software, hardware, firmware any combination realize method and system of the invention.The said sequence of the step of for method is only
In order to be illustrated, the step of method of the invention, is not limited to sequence described in detail above, especially says unless otherwise
It is bright.In addition, in some embodiments, also the present invention can be embodied as to record program in the recording medium, these programs include
For realizing machine readable instructions according to the method for the present invention.Thus, the present invention also covers storage for executing according to this hair
The recording medium of the program of bright method.
Description of the invention is given for the purpose of illustration and description, and is not exhaustively or will be of the invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches
It states embodiment and is to more preferably illustrate the principle of the present invention and practical application, and those skilled in the art is enable to manage
The solution present invention is to design various embodiments suitable for specific applications with various modifications.
Claims (10)
1. a kind of resource regulating method of co-channel full duplex in-door covering simultaneously, it is characterised in that, include:
The pilot signal strength sent to the user terminal that multiple room divided antennas receive is estimated；
Determine that the interference between user terminal is strong according to the distributing position information of pilot signal strength and the multiple room divided antenna
Degree；
Wherein, the multiple room divided antenna receives the pilot frequency information that indoor user terminal is sent, according to pilot signal strength
Estimated, determines that user terminal uplink and downlink data transmit the room divided antenna used；Day is divided in the room according to used in user terminal
The distributing position information of line and preset the multiple room divided antenna determines the interference strength between user terminal；
The frequency point or time slot that the transmission of user terminal uplink and downlink data uses are determined according to the interference strength, reduce user terminal
Between sending and receiving data interference；Wherein, when judge interference strength to be strong and when there is multifrequency point, then it is whole to different users
End distributes different frequency points and transmits data, and distributes identical frequency point to the uplink and downlink data of the same user terminal and transmit.
2. method as described in claim 1, it is characterised in that:
The distributing position information of the multiple room divided antenna includes: position, floor, room number and the room point of room divided antenna setting
The indoor mesh point information of antenna.
3. method according to claim 1 or 2, it is characterised in that:
The interference strength between user terminal is judged according to preset interference rule；
When judging that interference strength to be weak and when having multifrequency point, then distribute identical frequency point to different user terminal and transmit
Data, and distribute different frequency points to the uplink and downlink data of the same user terminal and transmit.
4. method as claimed in claim 3, it is characterised in that:
When judging that interference strength to be strong and when having single-frequency point, then distributes different user terminals different slot transmissions
Data, and identical slot transmission is distributed to the uplink and downlink data of the same user terminal；
When judging that interference strength to be weak and when having single-frequency point, then distributes identical slot transmission to different user terminal
Data, and different slot transmissions is distributed to the uplink and downlink data of the same user terminal.
5. method as claimed in claim 3, it is characterised in that:
The interference rule includes: then to do when user terminal is transmitted using identical room divided antenna and is located at identical room
It is strong for disturbing intensity；When user terminal is transmitted using identical room divided antenna and is located at different floors, then interference strength is weak；
When user terminal is transmitted using different room divided antennas and is located at same room, then interference strength is strong；When user terminal makes
When being transmitted with different room divided antennas and be located at different rooms, then interference strength is weak.
6. a kind of resource scheduling device of co-channel full duplex in-door covering simultaneously, it is characterised in that, include:
Signal strength estimation unit, the pilot signal strength that the user terminal for receiving to multiple room divided antennas is sent carry out
Estimation；
Interference strength judging unit, for being determined according to the distributing position information of pilot signal strength and the multiple room divided antenna
Interference strength between user terminal；Wherein, the multiple room divided antenna receives the pilot frequency information that indoor user terminal is sent,
The signal strength estimation unit is estimated according to pilot signal strength, determines that the transmission of user terminal uplink and downlink data makes
Room divided antenna；Interference strength judging unit room divided antenna according to used in user terminal and preset described more
The distributing position information of a room divided antenna determines the interference strength between user terminal；
Frequency point time slot allocating unit, for determining the frequency of user terminal uplink and downlink data transmission use according to the interference strength
Point or time slot reduce the interference of sending and receiving data between user terminal；Wherein, when interference strength judging unit judgement interference is strong
Degree be it is strong and when there is multifrequency point, then the frequency point time slot allocating unit distributes different user terminals different frequency points
Data are transmitted, and distributes identical frequency point to the uplink and downlink data of the same user terminal and transmits.
7. device as claimed in claim 6, it is characterised in that:
The distributing position information of the multiple room divided antenna includes: position, floor, room number and the room point of room divided antenna setting
The indoor mesh point information of antenna.
8. device as claimed in claims 6 or 7, it is characterised in that:
The interference strength judging unit judges the interference strength between user terminal according to preset interference rule；
When the interference strength judging unit judge interference strength to be weak and when there is multifrequency point, then the frequency point time slot point
Identical frequency point is distributed to different user terminals with unit and transmits data, and to the upper and lower line number of the same user terminal
It is transmitted according to different frequency points is distributed.
9. device as claimed in claim 8, it is characterised in that:
When the interference strength judging unit judge interference strength to be strong and when there is single-frequency point, then the frequency point time slot point
Different slot transmission data are distributed different user terminals with unit, and to the upper and lower line number of the same user terminal
According to the identical slot transmission of distribution；
When the interference strength judging unit judge interference strength to be weak and when there is single-frequency point, then the frequency point time slot point
Identical slot transmission data are distributed to different user terminals with unit, and to the upper and lower line number of the same user terminal
According to the different slot transmission of distribution.
10. a kind of base station characterized by comprising
The resource scheduling device of co-channel full duplex in-door covering while as described in claim 6 to 9 any one.
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| CN201410436284.9A CN105376865B (en) | 2014-08-29 | 2014-08-29 | Resource regulating method, device and the base station of co-channel full duplex in-door covering simultaneously |
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| CN107872287B (en) * | 2016-09-26 | 2019-11-12 | 北京大学（天津滨海）新一代信息技术研究院 | A kind of method that inter-user interference is eliminated in full duplex cell |
| CN116707676B (en) * | 2023-08-07 | 2023-10-24 | 广州天奕技术股份有限公司 | Chamber division signal detection device, anti-interference control method thereof and related equipment |
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| CN102549962A (en) * | 2009-10-01 | 2012-07-04 | 高通股份有限公司 | Method and apparatus for conducting measurements when multiple carriers are supported |
| CN103427872A (en) * | 2013-09-03 | 2013-12-04 | 电子科技大学 | Same-time same-frequency full duplex multi-tap radio frequency self-interference offset system and method |
| CN103647579A (en) * | 2013-12-18 | 2014-03-19 | 中国科学院大学 | Passive elimination and digital elimination based same-frequency full duplex implementation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8837332B2 (en) * | 2010-12-13 | 2014-09-16 | Nec Laboratories America, Inc. | Method for a canceling self interference signal using passive noise cancellation for full-duplex simultaneous (in time) and overlapping (in space) wireless transmission and reception on the same frequency band |
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|---|---|---|---|---|
| CN102549962A (en) * | 2009-10-01 | 2012-07-04 | 高通股份有限公司 | Method and apparatus for conducting measurements when multiple carriers are supported |
| CN103427872A (en) * | 2013-09-03 | 2013-12-04 | 电子科技大学 | Same-time same-frequency full duplex multi-tap radio frequency self-interference offset system and method |
| CN103647579A (en) * | 2013-12-18 | 2014-03-19 | 中国科学院大学 | Passive elimination and digital elimination based same-frequency full duplex implementation method |
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