CN110049541A - A kind of method and apparatus that D2D interference avoids - Google Patents
A kind of method and apparatus that D2D interference avoids Download PDFInfo
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- CN110049541A CN110049541A CN201910183496.3A CN201910183496A CN110049541A CN 110049541 A CN110049541 A CN 110049541A CN 201910183496 A CN201910183496 A CN 201910183496A CN 110049541 A CN110049541 A CN 110049541A
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Abstract
Present applicant proposes a kind of D2D to interfere the method and apparatus avoided.The present invention solves the interference problem of across cell D2D UE communication, and in one embodiment, D2D sends UE and uplink sends the scheme that UE shares identical running time-frequency resource, improves the availability of frequency spectrum of D2D UE communication.Further, interference of the D2D physical signal to uplink signal is reduced by the maximum power that sends that control D2D sends UE.
Description
The application is the divisional application of following original application:
-- the applying date of original application: on November 01st, 2013
-- the application number of original application: 201310534394.4
-- a kind of invention and created name of original application: method and apparatus that D2D interference avoids
Technical field
The present invention relates to devices to demodulated reference signal (DMRS- in device (D2D-Device to Device) communication
Demodulation Reference Signal) transmission scheme, more particularly to be based on long term evolution (LTE-Long Term
Evolution) the transmission plan that the interference of D2D avoids.
Background technique
Traditional third generation cooperative partner program (3GPP-3rd Generation Partner Project) long term evolution
In (LTE-Long Term Evolution) system, two kinds of frame structures, i.e. frequency division duplex (FDD-Frequency are defined
Division Duplex) frame structure 1 of system and the frame structure of time division duplex (TDD-Time Division Duplex) system
2.The difference of the two is that each subframe of FDD frame structure is 1 millisecond (ms-millisecond), and TDD system is in each frame
1~2 special subframe is defined in (10 subframes), special subframe is by downlink synchronization slot (DwPTS-Downlink Pilot
Time Slot), protection interval (GP-Guard Period), uplink synchronous time slot (UpPTS-Uplink Pilot Time
Slot) three parts are constituted.Traditional LTE uplink communication ensures that the reception power of uplink signal meets using the method for power control
The expection of base station, by taking Physical Uplink Shared Channel (PUSCH-Physical Uplink Shared Channel) as an example, if
UE sends PUSCH in serving cell c and does not send Physical Uplink Control Channel (PUCCH-Physical Uplink Control
Channel), then transmission power of the UE in subframe i are as follows:
Wherein, PCMAX,cIt (i) is maximum transmission power, MPUSCH,cIt (i) is the bandwidth-of PUSCH occupancy with Physical Resource Block
(PRB-Physical Resource Block) is unit, PLcIt is downlink path loss, αcIt is path loss compensation factor,
PO_PUSCH,cIt is the parameter of high-level signaling adjustment, ΔTF,cIt (i) is the relevant parameter of transformat, fcIt (i) is closed-loop power control signaling tune
Whole parameter
In traditional 3GPP version, data transmission occurs between base station and user equipment (UE-User Equipment).
In 3GPP R12, device is set up the project and is discussed to device (D2D-Device to Device) communication, and the essence of D2D is special
Point is that the data between UE is allowed to transmit.For FDD and TDD system, 3GPP is in the first working group of wireless access network the 73rd
The conclusion that secondary meeting (RAN1#73) is reached is: the UE in D2D system does not allow to receive and dispatch simultaneously.Further, in order to avoid downlink
The interference that data communicate D2D, UE occupy the sub-frame of uplink of the traditional ascending resource i.e. upstream band of FDD and subframe (TDD)
(TDD downlink subframe needs to be further discussed) is communicated for D2D.In RAN1#74bis meeting, pass through about D2D communication
Subframe uses the multi-access mode of SC-FDMA.
If participate in D2D communication a D2D UE group (two or more) UE reside in different cells (or
Part UE is in except MPS process), it is that the communication of the D2D UE group uses a cell that one, which needs the problem of inquiring into,
The resource of physical resource or multiple cells.Further, the maximum power that sends that D2D UE how is arranged is also required to solution party
Case.
In view of the above-mentioned problems, the invention discloses the interference avoidance schemes in a kind of D2D system.
Summary of the invention
The invention discloses a kind of methods in user equipment (UE), wherein includes the following steps:
A. it receives the first signaling and determines that the first physical resource pool, the first signaling are semi-static signalings
B. it receives the second signaling and perhaps voluntarily determines that the second signaling of physical resource S1 is that UE is specific or UE group is specific
Signaling
C. D2D signal is sent to send power P on the physical resource S1
Wherein, if the physical resource S1 belongs to the first physical resource pool, the transmission power P is no more than the first function
Rate, if the physical resource S1 belongs to the second physical resource pool, the transmission power P is no more than the second power, the second physics
Resource pool be and the nonoverlapping physical resource of the first physical resource pool either empty set.
The D2D signal is D2D physical layer data or D2D physical layer signaling.As one embodiment, the first physics money
Source pond is the subset 1 of the ascending physical signal resource of persistent district, and the second physical resource pool is the ascending physical signal resource of persistent district
Subset 2.As another embodiment, for TDD system, the first physical resource pool is the subset 1 of the sub-frame of uplink of persistent district,
Second physical resource pool is that (downlink subframe is resident in the reception UE of D2D signal for a downlink subframe of persistent district
Cell is configured as uplink).As another embodiment, the first physical resource pool is the son of the ascending physical signal resource of persistent district
Collection 1, the second physical resource pool is empty set.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
D. it receives third signaling and determines at least one of:
- the first power
- the second power
Wherein, third signaling is semi-static signaling.
As one embodiment, third signaling is the specific signaling of cell, controls (RRC- by common radio resources
Radio Resource Contrl) message carrying.As another embodiment, third signaling is that UE is specific or UE group is special
Fixed signaling is carried by proprietary RRC information.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
E. it receives the 4th signaling and determines that the second physical resource pool, the 4th signaling are semi-static signaling or dynamic signaling.
4th signaling is sent by resident base station either D2D UE.
Specifically, according to an aspect of the present invention, which is characterized in that the second physical resource pool is to remove the first physics money
Ascending physical signal resource except the pond of source.
Above-mentioned aspect according to the present invention, UE do not need to can determine the second physical resource by signaling.
Specifically, according to an aspect of the present invention, which is characterized in that the first physical resource pool is following one:
- K available subframes
Particular sub-band S in-K available subframes
Wherein, the K is 0 or positive integer.
Specifically, according to an aspect of the present invention, which is characterized in that the first power is legal maximum transmission power, the
Two power are not more than the first power.
For LTE, the legal maximum function rule that sends is 23 decibel milliwatts (dBm).
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
F. it sends the 5th signaling and indicates the first physical resource pool.
Specifically, according to an aspect of the present invention, which is characterized in that when moment T1-T2 sends the D2D signal
It carves, in which:
If the physical resource S1 belongs to the first physical resource pool, T1 is connecing for the synchronizing sequence that persistent district is sent
Between time receiving, T2 0.
If the physical resource S1 belongs to the second physical resource pool, T1 is connecing for the synchronizing sequence that neighboring community is sent
Between time receiving, T2 0；Or T1 is the receiving time for the synchronizing sequence that persistent district is sent, T2 is positive value, negative value or 0.
The invention discloses a kind of methods in base station, wherein includes the following steps:
A. it sends the first signaling and indicates the first physical resource pool, the first signaling is semi-static signaling
B. the second signaling instruction physical resource S1 is sent, the second signaling is that UE is specific or the specific signaling of UE group
Wherein, if the physical resource S1 belongs to the first physical resource pool, the D2D UE's on the physical resource S1
It sends power P and is no more than the first power, if the physical resource S1 belongs to the second physical resource pool, the transmission power P is not
More than the second power, the second physical resource pool is and the nonoverlapping physical resource of the first physical resource pool either empty set.
Specifically, according to an aspect of the present invention, which is characterized in that further include at least one of following steps:
D. it sends third signaling and indicates at least one of:
- the first power
- the second power
Wherein, third signaling is semi-static signaling.
E. it sends the 4th signaling and indicates the second physical resource pool, the 4th signaling is semi-static signaling or dynamic signaling.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
G. uplink of the dispatch scheduling on physical resource S1 is sent to send
H. upstream data is received on the physical resource S1
Above-mentioned aspect according to the present invention has been multiplexed D2D physical signal and ascending physical signal letter on the physical resource S1
Number, improve spectrum utilization efficiency.
Specifically, according to an aspect of the present invention, which is characterized in that the second physical resource pool is to remove the first physics money
Ascending physical signal resource except the pond of source.
Specifically, according to an aspect of the present invention, which is characterized in that the first physical resource pool is following one:
- K available subframes
Particular sub-band S in-K available subframes
Wherein, the K is 0 or positive integer.
Specifically, according to an aspect of the present invention, which is characterized in that the first power is legal maximum transmission power, the
Two power are not more than the first power.
The invention discloses a kind of user equipmenies, which is characterized in that the equipment includes:
First module: it receives the first signaling and determines that the first physical resource pool, the first signaling are semi-static signalings
Second module: it receives the second signaling and perhaps voluntarily determines that the second signaling of physical resource S1 is that UE is specific or UE
The specific signaling of group
Third module: D2D signal is sent to send power P on the physical resource S1
Wherein, if the physical resource S1 belongs to the first physical resource pool, the transmission power P is no more than the first function
Rate, if the physical resource S1 belongs to the second physical resource pool, the transmission power P is no more than the second power, the second physics
Resource pool be and the nonoverlapping physical resource of the first physical resource pool either empty set.
As one embodiment, above equipment further includes at least one of:
4th module: it receives third signaling and determines at least one of:
- the first power
- the second power
Wherein, third signaling is semi-static signaling.
5th module: it receives the 4th signaling and determines that the second physical resource pool, the 4th signaling are semi-static signaling or dynamic
Signaling.
The invention discloses a kind of base station equipments, which is characterized in that the equipment includes:
First module: it sends the first signaling and indicates the first physical resource pool, the first signaling is semi-static signaling
Second module: it sends the second signaling and indicates physical resource S1, the second signaling is that UE is specific or UE group is specific
Signaling
Wherein, if the physical resource S1 belongs to the first physical resource pool, the D2D UE's on the physical resource S1
It sends power P and is no more than the first power, if the physical resource S1 belongs to the second physical resource pool, the transmission power P is not
More than the second power, the second physical resource pool is and the nonoverlapping physical resource of the first physical resource pool either empty set.
As one embodiment, above equipment further includes at least one of:
Third module: it sends third signaling and indicates at least one of:
- the first power
- the second power
Wherein, third signaling is semi-static signaling.
4th module: it sends the 4th signaling and indicates the second physical resource pool, the 4th signaling is semi-static signaling or dynamic
Signaling.
The present invention solves the interference problem of across cell D2D UE communication, and for this problem, the invention proposes one kind
D2D sends UE and uplink sends the scheme that UE shares identical running time-frequency resource, improves the availability of frequency spectrum of D2D UE communication.Into
One step, interference of the D2D physical signal to uplink signal is reduced by the maximum power that sends that control D2D sends UE.This hair
It is bright to be compatible with existing 3GPP conclusion.
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 schematic diagram according to an embodiment of the invention for sending D2D signal；
Determining maximum showing for power and the second physical resource pool is sent Fig. 2 shows according to an embodiment of the invention
It is intended to；
Fig. 3 shows D2D UE according to an embodiment of the invention and sends showing for signaling the second physical resource pool of instruction
It is intended to；
Fig. 4 shows the schematic diagram of the position of the first physical resource pool according to an embodiment of the invention；
Fig. 5 shows the processing unit structural block diagram in user equipment according to an embodiment of the invention；
Fig. 6 shows the processing unit structural block diagram in base station equipment 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 schematic diagram for sending D2D signal, as shown in Fig. 1.In attached drawing 1, base station B10 is UE U11
Serving cell.
For base station B10, the first signaling is sent in step s101 and indicates the first physical resource pool, the first signaling is half quiet
State signaling；The second signaling instruction physical resource S1 is sent in step s 102, and the second signaling is that UE is specific or UE group is specific
Signaling.
For UE U11, the first signaling is received in step S111 and determines that the first physical resource pool, the first signaling are half quiet
State signaling；The second signaling is received in step S112 and determines physical resource S1, and the second signaling is that UE is specific or UE group is specific
Signaling；D2D signal is sent to send power P on the physical resource S1 in step S113
Wherein, if the physical resource S1 belongs to the first physical resource pool, the transmission power P is no more than the first function
Rate.If the second physical resource pool is not empty set and the physical resource S1 belongs to the second physical resource pool, the transmission power P
No more than the second power, the second physical resource pool is and the nonoverlapping physical resource of the first physical resource pool.
As an alternate embodiment of embodiment 1, for base station B10, the step S102 and the second signaling are omitted, i.e.,
The part of broken line representation in attached drawing 1；For UE U11, physical resource S1 is voluntarily determined in step S112.
Embodiment 2
Embodiment 2, which illustrates, determines the maximum schematic diagram for sending power and the second physical resource pool, as shown in Fig. 2.It is attached
In Fig. 2, base station B12 is the serving cell of UE U13.
For base station B12, third signaling is sent in step S121 and indicates at least one of:
- the first power
- the second power
The 4th signaling is sent in step S122 indicates the second physical resource pool.
For UE U11, third signaling is received in step S131 and determines at least one of:
- the first power
- the second power
In step S132, receives the 4th signaling and determine the second physical resource pool.
Above-mentioned third signaling is semi-static signaling, and above-mentioned third signaling is that cell is specific or UE is specific or UE group
Specifically, above-mentioned 4th signaling is semi-static signaling or dynamic signaling.
Embodiment 3
Embodiment 3 illustrates D2D UE and sends the schematic diagram that signaling indicates the second physical resource pool, as shown in Fig. 3.It is attached
In Fig. 3, base station B14 is the serving cell of UE U15, and base station B17 is the serving cell of UE U16.
For base station B14, signaling C1 is sent in step s 141 and indicates physical resource pool R1；For base station B17, in step
Signaling C3 is sent in S171 indicates physical resource pool R2.
For UE U15, signaling C1 is received in step S151 and determines physical resource pool R1；Letter is sent in step S152
C2 is enabled to indicate physical resource pool R1.
For UE U16, signaling C3 is received in step S161 and determines physical resource pool R2；Letter is received in step S162
C2 is enabled to determine physical resource pool R1；Physical resource S1 is voluntarily determined in step S163；In physical resource S1 in step S164
On with send power P and moment T1-T2 send D2D signal.Wherein, if the physical resource S1 belongs to physical resource pool
R2, the transmission power P are no more than the first power, that is, 23dBm, and T1 is the main synchronizing sequence secondary synchronization sequences that base station B17 is sent
(PSS/SSS-Primary/Secondary synchronization sequence) is in the receiving time of UE U16, T2 0；
If the physical resource S1 belongs to physical resource pool R1, the transmission power P is no more than the second power, and (the second power is predefined
Or configured by base station B17), T1 is the receiving time for the PSS/SSS that base station B14 is sent, T2 0.
Embodiment 4
Embodiment 4 illustrates the schematic diagram of the position of the first physical resource pool, as shown in Fig. 4.
D2D UE receives the first signaling and determines that the first physical resource pool, the first signaling are semi-static signalings in FDD system；The
For one physical resource pool as shown in grey mark in attached drawing 4 (a), the first physical resource pool occupies K son of FDD up-link carrier
Frame, K be the first signaling scheduling period included number of sub frames divided by 8.
As an alternate embodiment of embodiment 4, D2D UE receives the first signaling and determines that the first physics provides in TDD system
Source pond, the first signaling are semi-static signalings；First physical resource pool is as shown in grey mark in attached drawing 4 (b), the first physical resource
Pond occupies a sub-band in the 2nd sub-frame of uplink of each frame in the continuous K frame of TDD.K is the first signaling scheduling period institute
The frame number for including.
Embodiment 5
Embodiment 5 illustrates the processing unit structural block diagram in user equipment, as shown in Fig. 5.In attached drawing 5, UE processing
Device 400 is made of receiving module 401, determining module 402, determining module 403, sending module 404.
Receiving module 401 receives the first signaling and determines that the first physical resource pool, the first signaling are semi-static signalings；Determine mould
Block 402 receives the second signaling or voluntarily determines that (dotted arrow indicates that determining module 402 not necessarily receives second to physical resource S1
Signaling), the second signaling is that UE is specific or the specific signaling of UE group；Determining module 403 receives signaling and determines the first power.Hair
Module 404 is sent to send D2D signal on the physical resource S1 to send power P
Wherein, the transmission power P is no more than the first power.
Embodiment 6
Embodiment 6 illustrates the processing unit structural block diagram in base station equipment, as shown in Fig. 6.In attached drawing 6, base station
Device 500 is managed by sending device 501, sending device 502, the composition of sending device 503.
Sending device 501 sends the first signaling and indicates the first physical resource pool, and the first signaling is semi-static signaling；Send dress
Set 502 the second signalings of transmission instruction physical resource S1, the second signaling is that UE is specific or the specific signaling of UE group；Sending device
503, which send signaling, indicates at least one of:
- the first power
- the second power
- the second physical resource pool
Wherein, if the physical resource S1 belongs to the first physical resource pool, the D2D UE's on the physical resource S1
It sends power P and is no more than the first power, if the physical resource S1 belongs to the second physical resource pool, the transmission power P is not
More than the second power, the second physical resource pool is and the nonoverlapping physical resource of the first physical resource pool either empty set.
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 (10)
1. a kind of method in user equipment, wherein include the following steps:
A. it receives the first signaling and determines that the first physical resource pool, the first signaling are semi-static signalings；
B. it receives the second signaling and determines physical resource S1 or voluntarily determining physical resource S1, the second signaling is that user equipment is specific
Or the specific signaling of group of user equipments；
C. D2D signal is sent to send power P on the physical resource S1；
D. it receives third signaling and determines at least one of:
- the first power；
- the second power；
Wherein, if the physical resource S1 belongs to the first physical resource pool, the transmission power P is no more than the first power, such as
Physical resource S1 described in fruit belongs to the second physical resource pool, and the transmission power P is no more than the second power, the second physical resource pool
Be with the nonoverlapping physical resource of the first physical resource pool, third signaling is semi-static signaling, and third signaling is that cell is specific
Signaling is carried by common radio resources control message.
2. the method according to claim 1, wherein further including following steps:
E. it receives the 4th signaling and determines that the second physical resource pool, the 4th signaling are semi-static signaling or dynamic signaling.
3. a kind of method in base station, wherein include the following steps:
A. it sends the first signaling and indicates the first physical resource pool, the first signaling is semi-static signaling；
B. the second signaling instruction physical resource S1 is sent, the second signaling is that user equipment is specific or group of user equipments is specific
Signaling；
D. it sends third signaling and indicates at least one of:
- the first power；
- the second power；
Wherein, if the physical resource S1 belongs to the first physical resource pool, the D2D user equipment on the physical resource S1
It sends power P and is no more than the first power, if the physical resource S1 belongs to the second physical resource pool, the transmission power P is not
More than the second power, the second physical resource pool be with the nonoverlapping physical resource of the first physical resource pool, third signaling is half quiet
State signaling, third signaling are the specific signalings of cell, are carried by common radio resources control message.
4. according to the method described in claim 3, it is characterized in that, further including following steps:
E. it sends the 4th signaling and indicates the second physical resource pool, the 4th signaling is semi-static signaling or dynamic signaling.
5. a kind of user equipment, which is characterized in that the equipment includes:
First module: it receives the first signaling and determines that the first physical resource pool, the first signaling are semi-static signalings；
Second module: it receives the second signaling and determines physical resource S1 or voluntarily determining physical resource S1, the second signaling is user
Equipment is specific or the specific signaling of group of user equipments；
Third module: D2D signal is sent to send power P on the physical resource S1；
4th module: it receives third signaling and determines at least one of:
- the first power；
- the second power；
Wherein, if the physical resource S1 belongs to the first physical resource pool, the transmission power P is no more than the first power, such as
Physical resource S1 described in fruit belongs to the second physical resource pool, and the transmission power P is no more than the second power, the second physical resource pool
It is and the nonoverlapping physical resource of the first physical resource pool；Third signaling is semi-static signaling, and third signaling is that cell is specific
Signaling is carried by common radio resources control message.
6. user equipment according to claim 5, which is characterized in that further include:
5th module: it receives the 4th signaling and determines that the second physical resource pool, the 4th signaling are semi-static signaling or dynamic signaling.
7. user equipment according to claim 5, which is characterized in that the first physical resource pool is following one:
- K available subframes；
Particular sub-band S in-K available subframes；
Wherein, the K positive integer.
8. user equipment according to claim 5, which is characterized in that the third module sends the 5th signaling instruction first
Physical resource pool.
9. user equipment according to claim 5, which is characterized in that the first power be it is legal it is maximum send power, second
Power is not more than the first power.
10. a kind of base station equipment, which is characterized in that the equipment includes:
First module: it sends the first signaling and indicates the first physical resource pool, the first signaling is semi-static signaling；
Second module: sending the second signaling and indicate physical resource S1, and the second signaling is that user equipment is specific or user equipment
The specific signaling of group；
Third module: it sends third signaling and indicates at least one of:
- the first power；
- the second power；
Wherein, if the physical resource S1 belongs to the first physical resource pool, the D2D user equipment on the physical resource S1
It sends power P and is no more than the first power, if the physical resource S1 belongs to the second physical resource pool, the transmission power P is not
More than the second power, the second physical resource pool is and the nonoverlapping physical resource of the first physical resource pool；Third signaling is half quiet
State signaling, third signaling are the specific signalings of cell, are carried by common radio resources control message.
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| CN201910183496.3A CN110049541B (en) | 2013-11-01 | 2013-11-01 | Method and device for avoiding D2D interference |
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| CN201310534394.4A CN104602350B (en) | 2013-11-01 | 2013-11-01 | A kind of method and apparatus that D2D interference avoids |
| CN201910183496.3A CN110049541B (en) | 2013-11-01 | 2013-11-01 | Method and device for avoiding D2D interference |
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| CN107343297B (en) * | 2016-05-01 | 2019-12-24 | 上海朗帛通信技术有限公司 | Method and device in wireless communication |
| CN111294194B (en) * | 2016-08-16 | 2022-06-21 | 上海朗帛通信技术有限公司 | Method and device in wireless transmission |
| CN107888238B (en) * | 2016-09-30 | 2020-09-01 | 上海朗帛通信技术有限公司 | Method and device for UE (user equipment) and base station for random access |
| CN113890719B (en) * | 2017-01-22 | 2024-10-15 | 上海朗帛通信技术有限公司 | Method and device in wireless communication |
| CN114125873A (en) * | 2017-03-26 | 2022-03-01 | 上海朗桦通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| CN110915270B (en) * | 2017-08-11 | 2022-05-10 | 华为技术有限公司 | Power control method, terminal and network equipment |
| AU2018401508B2 (en) | 2018-01-12 | 2021-03-11 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Data transmission method and device, and system |
| CN114944901B (en) | 2019-11-15 | 2024-10-18 | 上海朗帛通信技术有限公司 | Method and apparatus in a node for wireless communication |
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| CN110049541B (en) | 2021-09-24 |
| CN104602350B (en) | 2019-04-12 |
| CN104602350A (en) | 2015-05-06 |
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