CN105898856B - A kind of communication between devices synchronous method and device - Google Patents
A kind of communication between devices synchronous method and device Download PDFInfo
- Publication number
- CN105898856B CN105898856B CN201410663957.4A CN201410663957A CN105898856B CN 105898856 B CN105898856 B CN 105898856B CN 201410663957 A CN201410663957 A CN 201410663957A CN 105898856 B CN105898856 B CN 105898856B
- Authority
- CN
- China
- Prior art keywords
- user
- synchronization signal
- synchronization
- synchronizing channel
- timing
- 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
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000004891 communication Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 6
- 108010076504 Protein Sorting Signals Proteins 0.000 claims description 2
- 230000001413 cellular effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
This application discloses a kind of synchronous method of communication between devices and devices, this method comprises: the corresponding relationship selection physical layer D2D link synchronization source that D2D user sends the reference timing-type of signal according to predefined user and physical layer D2D link synchronization source identifies identifies；D2D user generates corresponding synchronization signal according to selected D2D link synchronization source mark；D2D user detects whether oneself is in cell coverage area, if be not in cell coverage area, D2D user also detects whether to receive the synchronization signal and synchronizing channel of other D2D users；D2D user sends synchronization signal and synchronizing channel according to the detection case；Wherein D2D user indicates whether this user is in cell coverage area in physics D2D synchronizing channel.It is capable of the synchronization of simple realization communication between devices on a cellular system using the application, reduces complexity and guarantee synchronous validity simultaneously.
Description
Technical field
This application involves wireless communication technology field more particularly to a kind of communication between devices synchronous method and device.
Background technique
Equipment room (Device-to-Device, D2D) communication is as the wireless money allowed between terminal device by configuring
The new technology that source is directly communicated, by its huge potential valence in public safety field and the normal domestic communications field
Value, obtains the extensive concern of industry.In 3G (Third Generation) Moblie partnership projects (3id Generation Partnership
Project, 3GPP) formulate Evolved Universal Terrestrial Radio Acccess (E-UTRA) agreement correspondence
Long term evolution (Long Term Evolution, referred to as LTE) system evolution version Release-12 job
In, LTE system allow for supporting the demand for meeting the public safety business of mouth benefit growth based on the D2D of system communication and
Communication data service of the terminal to terminal.
In the D2D communication based on LTE system, similar with the cell synchronisation procedure of LTE system, D2D user is based on D2D's
Synchronization signal carries out frequency and time synchronization.With physical-layer cell identifier (Physical cell ID, PCI) similar, D2D user
A physical layer D2D link synchronization source mark (Physical Sidelink can all be configured by sending synchronization signal
Synchronization Source Identitv, PSSID), for generating the scrambling code of D2D broadcast channel (PSBCH).Therefore,
Other than the time is synchronous with frequency, D2D user is also based on synchronization signal and obtains PSSID.The synchronization signal of D2D is divided into main synchronization
Signal (primary D2D synchronization signal, PD2DSS) and secondary synchronization signal (secondary D2D
Synchronization signal, SD2DSS), the primary synchronization signal of D2D uses and LTE primary synchronization signal (primary
Synchronization signal, PSS) same sequence generating mode, i.e. length is 62, is symmetrically mapped in bandwidth
Zadoff-Chu sequence on 62 subcarriers of the heart, but use different root sequence index (root sequence
Index), to reduce D2D synchronization signal erroneous detection as the probability of cell synchronous signal.Different root sequence index is corresponding to be generated not
Same Zadoff-chu root sequence, these root sequences have different period autocorrelation and cross correlation.The auxiliary synchronous letter of D2D
Number using sequence with LTE secondary synchronization signal (Secondary synchronization signal, SSS) equally.In addition,
The type for the reference timing that the synchronization signal of D2D is sent according to synchronization signal can be divided into the synchronization signal based on cell timing
(D2DSSue-net) and it is not based on the synchronization signal (D2DSS-oon) of cell timing.
For the D2D user synchronized based on D2D synchronization signal, in network coverage
The synchronization signal of D2D user has higher priority relative to the synchronization signal of the D2D user outside network coverage, i.e.,
The synchronization signal that D2D user should preferentially select the D2D user in network coverage to issue synchronizes.
On waveform, primary synchronization signal and secondary synchronization signal are all made of the single carrier without discrete Fourier transform (DFT)
Frequency division multiple access (SC-FDMA).
In the mapping of running time-frequency resource, D2D synchronization signal occupies 6 subcarrier in frequency domain resources at system bandwidth center, when
On domain in each synchronous subframe the respectively primary synchronization signal containing 2 time-domain symbol length and 2 time-domain symbol length it is auxiliary same
Walk signal.In synchronous subframe also comprising D2D synchronizing channel (Physicai D2D synchronization channel,
PD2DSCH), for carrying necessary D2D connection setup configuration information, such as D2D subframe number, TDD uplink-downlink configuration information etc..
To sum up, although the design of LTE is continued to use in the D2D communication based on LTE as far as possible, communication pattern is with traditional base station
It is very different with terminal room communication, so needing different signal/channel design and communication means.In D2D connection setup,
A very important link is exactly to establish communication link to synchronize.How an efficient D2D synchronous machine is established in LTE system
System is that D2D communicates current urgent problem.In D2D synchronization mechanism, how to be carried by synchronization signal and synchronize Source Type
Information to have reduced the implementation complexity in synchronizing process be also a problem to be solved.
Summary of the invention
This application provides a kind of method and devices of communication between devices, to improve D2D net synchronization capability and reduce D2D user
The complexity of synchronous detection.
A kind of method of communication between devices provided by the present application includes:
D2D user sends reference timing-type and the physical layer D2D link synchronization source of signal according to predefined user
The corresponding relationship selection physical layer D2D link synchronization source mark of mark；
D2D user generates corresponding synchronization signal according to selected D2D link synchronization source mark；
D2D user detects whether oneself is in cell coverage area, if be not in cell coverage area, D2D is used
Family also detects whether to receive the synchronization signal and synchronizing channel of other D2D users；D2D user sends out according to the detection case
Send synchronization signal and synchronizing channel；Wherein whether D2D user indicates this user in (PD2DSCH) in physics D2D synchronizing channel
In cell coverage area.
Preferably, the reference timing-type includes cell timing and non-cell timing；
Preferably, belonging to covering model preset according to the timing of cell if the D2D user is in MPS process
Synchronization signal and synchronizing channel are sent in the running time-frequency resource of synchronization signal in enclosing, preferably, the D2D user is according to receiving
Cell downlink signal as send synchronization signal timing.
Preferably, if the D2D user is in outside cell coverage area, and the synchronization for receiving other D2D users is believed
Number and synchronizing channel, according to the synchronisation source of the synchronization signal received with reference to timing-type and it is described receive it is synchronous believe
Covering in road indicates the transmission to determine synchronization signal and synchronizing channel；Preferably, the D2D user is received by decoding
Other D2D users send synchronization signal, obtain physical layer D2D link synchronization source mark, according to predefined physical layer D2D
Link synchronization source mark refers to the corresponding relationship of timing-type with synchronisation source, obtains the synchronisation source class of the synchronization signal received
Type.
Preferably, not detecting any other D2D user if the D2D user is in outside cell coverage area
Synchronization signal and synchronizing channel, then the D2D user sends the user itself in the resource outside preset coverage area
Synchronization signal and synchronizing channel.
Preferably, the D2D user outside cell coverage area, if the synchronization of the other D2D users received
The synchronization Source Type of signal is the synchronization signal for being not based on cell timing, then the D2D user is according to the synchronization signal received
Timing forward the synchronization signal received in other preset running time-frequency resources for belonging to coverage area external synchronization signal
With the synchronizing channel of itself.
Preferably, the D2D user outside cell coverage area, if the synchronization of the other D2D users received
The synchronization Source Type of signal is to indicate the use received in the synchronization signal based on cell timing and the synchronizing channel that receives
Family is in cell coverage area, then the D2D user is according to the timing of the synchronization signal received in other preset coverings
The synchronizing channel of the synchronization signal that forwarding receives in running time-frequency resource outside range the and described D2D user itself.
Preferably, the D2D user outside cell coverage area, if the synchronization of the other D2D users received
The synchronization Source Type of signal be in the synchronization signal based on cell timing and the synchronizing channel that receives instruction receive should
User is in outside cell coverage area, then the D2D user preset is covered according to the timing of the synchronization signal received at other
The synchronizing channel of the synchronization signal that forwarding receives in resource outside lid range the and described D2D user itself；Or the D2D
User forwards the user itself according to the timing of the synchronization signal received in the resource outside other preset coverage areas
Synchronization signal and synchronizing channel.
Preferably, the D2D user identifies according to selected D2D link synchronization source determines Zadoff-Chu sequence simultaneously
Primary synchronization signal and secondary synchronization signal are generated, and primary synchronization signal is provided with the time-frequency that auxiliary synchronous signal is mapped to synchronous subframe
On source, synchronous subframe is regularly sent according to reference.Wherein, the root sequence index of primary synchronization signal can be pre-set sequence
The root sequence index of column index or network configuration, the scrambling code of the sequence of secondary synchronization signal can be physical layer D2D link synchronization source
Mark.
A kind of device provided by the present application includes: initialization module, and detection judging module sends confirmation module, in which:
Initialization module, for sending the reference timing-type and physical layer D2D chain of signal according to predefined user
The corresponding relationship selection physical layer D2D link synchronization source mark and generation synchronizing sequence of road Synchronization Source；
Judging module is detected, controls the several parameters for sending selecting module: cell coverage area situation for determining, it is other
The synchronization signal of D2D user and the detection case of synchronizing channel；
Send confirmation module, for determine the sending method of synchronization signal and synchronizing channel and send the synchronization signal and
Synchronizing channel.
As seen from the above technical solution, the present invention provides a kind of effective reliable D2D synchronous method.
Detailed description of the invention
Fig. 1 is the schematic diagram using communication between devices synchronous method of the invention
Fig. 2 is the synchronous method flow diagram of present pre-ferred embodiments one
Fig. 3 is the synchronous method flow diagram of present pre-ferred embodiments two
Fig. 4 is the synchronous method flow diagram of present pre-ferred embodiments three
Fig. 5 is the composed structure schematic diagram of one preferred means of the application
Specific implementation method
It is right hereinafter, referring to the drawings and the embodiments, for the objects, technical solutions and advantages of the application are more clearly understood
The application is described in further detail.
The invention proposes a kind of communication between devices (D2D) synchronous method, this method comprises:
101:D2D user is same according to the type and physical layer D2D link of the reference timing of the transmission signal of preset UE
The corresponding relationship selection physical layer D2D link synchronization source mark of step source mark.
102:D2D user generates the sequence of synchronization signal with the physical layer D2D link synchronization source mark selected and generates same
Walk signal.
103:D2D user indicates whether this user is in MPS process model in (PD2DSCH) in physics D2D synchronizing channel
In enclosing.
104: for the D2D user in MPS process, being belonged in coverage area according to the timing of cell preset
Synchronization signal running time-frequency resource in send generate synchronization signal and synchronizing channel.
105: for the D2D user outside the cell coverage area, receive the synchronization signal of other D2D users with it is synchronous
Channel, if the synchronization Source Type of the synchronization signal received is the synchronization signal for being not based on cell timing, D2D user's root
It is forwarded in other preset running time-frequency resources for belonging to coverage area external synchronization signal according to the timing of the synchronization signal received
The synchronization signal received and in step 103 synchronizing channel.
106: for the D2D user outside the cell coverage area, receive the synchronization signal of other D2D users with it is synchronous
Channel, if the synchronization Source Type of the synchronization signal received is the synchronization signal based on cell timing and the synchronizing channel
It sends user and indicates that the user is in cell coverage area in synchronizing channel, then the D2D user is according to the synchronization received
The timing of signal forwards the (step with itself of the synchronization signal received in the running time-frequency resource outside other preset coverage areas
In rapid 103) synchronizing channel.
107: for the D2D user outside the cell coverage area, receive the synchronization signal of other D2D users with it is synchronous
Channel, if the synchronization Source Type of the synchronization signal received is the synchronization signal based on cell timing and the synchronization source user
Indicate that the synchronisation source is in outside cell coverage area in synchronizing channel, then the D2D user is according to the synchronization signal received
Timing forwards the letter synchronous in step 103 of the synchronization signal received in the resource outside other preset coverage areas
Road；Alternatively, the synchronization signal for receiving other D2D users is believed with synchronous for the D2D user outside cell coverage area
Road, if the synchronization Source Type of the synchronization signal received is the synchronization signal based on cell timing and the synchronization source user exists
Indicate that the synchronisation source is in outside cell coverage area in synchronizing channel, then the D2D user determines according to the synchronization signal received
When turn the synchronous in step 103 of synchronization signal in sending step 102 in the resource outside other preset coverage areas
Channel.
108: for the D2D user outside cell coverage area, not detecting any synchronization signal with reference to timing
When, then the D2D user in the resource outside preset coverage area in sending step 102 synchronization signal and step 103 in
Synchronizing channel.
In a step 101, D2D user sends the type that signal refers to timing according to itself, selects physical layer D2D link same
Step source mark.
Physical layer D2D link synchronization source mark is divided into two classes according to the different type of reference timing, and it is same such as to define physical layer
The corresponding relationship of step source mark and reference timing-type:
| With reference to timing-type | Physical layer D2D link synchronization source mark |
| It is cell timing (D2Due_net) with reference to timing | (0..167) |
| It is non-cell timing (D2Due_oon) with reference to timing | (168..335) |
In a step 102, D2D user identifies according to the physical layer D2D link synchronization source of selection and generates synchronization signal.And it will
Primary synchronization signal is mapped on the running time-frequency resource of synchronous subframe with secondary synchronization signal, regularly sends synchronous subframe according to reference.Its
In, the root sequence index of primary synchronization signal can be the root sequence index of pre-set sequence index or network configuration, auxiliary
The scrambling code of the sequence of synchronization signal can identify for physical layer D2D link synchronization source.
In step 103, whether D2D user is in cell coverage area according to this user, indicates in synchronizing channel,
Such as: setting bit is that 1 instruction UE is in covering, and setting bit is that 0 instruction UE is in except coverage area.And according to this user
Information synchronizing channel, the subframe number as locating for synchronizing channel and uplink-downlink configuration are set.
At step 104, if D2D user is in cell coverage area, the user is according to the cell received
Synchronizing channel in synchronization signal and step 103 of the downlink signal as the timing for sending synchronization signal, in sending step 102.
In step 105, if D2D user is in outside cell coverage area, other the D2D users received send same
Signal is walked, by decoding synchronization signal, obtains physical layer D2D link synchronization source mark, the physical layer according to shown in step 1
D2D link synchronization source mark with the corresponding relationship of synchronous Source Type, obtain the synchronization Source Type of the synchronization signal received, if
The synchronization Source Type of the synchronization signal received is the synchronization signal for being not based on cell timing, then the D2D user is according to receiving
Synchronization signal timing forwarded in the resource outside other preset coverage areas the synchronization signal received and itself
Synchronizing channel.
In step 106, if D2D user is in outside cell coverage area, other the D2D users received send same
Signal is walked, by decoding synchronization signal, obtains physical layer D2D link synchronization source mark, the physical layer according to shown in step 1
D2D link synchronization source mark with the corresponding relationship of synchronous Source Type, obtain the synchronization Source Type of the synchronization signal received, if
The synchronization Source Type of the synchronization signal received is the synchronization signal based on cell timing and the synchronizing channel middle finger that receives
Show that the user is in cell coverage area, then the D2D user is preset at other according to the timing of the synchronization signal received
The synchronizing channel with itself for the synchronization signal that forwarding receives in resource outside coverage area.
In step 107, for the D2D user outside cell coverage area, if D2D user is in MPS process model
The synchronization signal outer, other the D2D users received send is enclosed, by decoding synchronization signal, obtains physical layer D2D link synchronization
Source mark, the physical layer D2D link synchronization source according to shown in step 1 mark with the corresponding relationship of synchronous Source Type, connect
The synchronization Source Type of the synchronization signal received, if the synchronization Source Type of the synchronization signal received is based on the same of cell timing
It walks signal and the synchronization source user indicates that the synchronisation source is in outside cell coverage area in synchronizing channel, then the D2D user
Send itself in the resource outside other preset coverage areas according to the timing of the synchronization signal received or forwarding, it is synchronous
The synchronizing channel of signal and itself.
In step 108, it for the D2D user outside the cell coverage area, does not detect any with reference to timing
When synchronization signal, then the D2D user in the resource outside preset coverage area in sending step 102 synchronization signal and step
Synchronizing channel in 103.
In the above-mentioned methods, other D2D users detect transmitted synchronization signal and synchronizing channel in corresponding resource,
The progress time is synchronous with frequency, carries out the communication of equipment room.
Technical scheme is further elaborated below by several preferred embodiments.
Embodiment one:
Step 201: in the D2D user in cell coverage area, if sending the reference timing of synchronization signal
It is based on cell timing, then the type of the synchronization source signal of the user is D2Due_net, according to synchronous Source Type and synchronisation source
The corresponding relationship of mark,
| With reference to timing-type | Physical layer D2D link synchronization source mark |
| It is cell timing (D2Due_net) with reference to timing | (0..167) |
| It is non-cell timing (D2Due_oon) with reference to timing | (168..335) |
A Synchronization Source, such as 0 are selected in the group of corresponding Synchronization Source,
Step 202: scrambling code of the user using Synchronization Source as synchronous signal sequence provides to generate synchronization according to standard
Sequence, and thereby generate synchronization signal.
Step 203: the user by synchronizing channel whether the mark in coverage area is arranged in coverage area
It is interior, and synchronizing channel is configured according to the other information of this user subframe number as locating for synchronizing channel and uplink-downlink configuration.
Step 204: the user according to the timing of the descending reference symbol of its coverage cell received in up-link carrier or
The synchronization signal and synchronizing channel that sending step 202 and step 203 generate in ascending time slot.
Embodiment two:
Step 301: in the D2D user outside cell coverage area, which receives other D2D users transmission
Synchronization signal and synchronizing channel, by determining the frequency for receiving channel for local sequence and the relevant operation of sequence received
Rate deviation and timing offset, and obtain physical layer D2D link synchronization source mark, such as 168.According to synchronous Source Type and synchronisation source mark
The corresponding relationship of knowledge,
| With reference to timing-type | Physical layer D2D link synchronization source mark |
| It is cell timing (D2Due_net) with reference to timing | (0..167) |
| It is non-cell timing (D2Due_oon) with reference to timing | (168..335) |
Determine that the synchronization Source Type received is D2Due_oon.
Step 302, which identifies the physical layer D2D link synchronization source received, and such as 168, as scrambling code, generates and connect
The same synchronization signal of the synchronization signal received.
Step 303: the user by synchronizing channel whether the mark in coverage area is arranged in coverage area
Outside, and according to the other information of this user subframe number as locating for synchronizing channel and uplink-downlink configuration synchronizing channel is configured.
Step 304: the user it is other it is prespecified belong in the running time-frequency resource of the synchronization signal outside coverage area,
Synchronization signal letter synchronous in step 303 i.e. in the resource different from the synchronization signal received, in sending step 302
Road.
Embodiment three
Step 401: in the D2D user outside cell coverage area, which receives other D2D users transmission
Synchronization signal and synchronizing channel, by determining the frequency for receiving signal for local sequence and the relevant operation of sequence received
Rate deviation and timing offset, and obtain physical layer D2D link synchronization source mark, such as 0.According to synchronous Source Type and Synchronization Source
Corresponding relationship,
| With reference to timing-type | Physical layer D2D link synchronization source mark |
| It is cell timing (D2Due_net) with reference to timing | (0..167) |
| It is non-cell timing (D2Due_oon) with reference to timing | (168..335) |
Determine that the synchronization Source Type received is D2Due_net.
Step 402, the user is by decoding synchronizing channel, and then obtains received synchronization signal and come from cell coverage area
Interior user, then the user identifies the physical layer D2D link synchronization source received, and such as 0, as scrambling code, generates and receive
The same synchronization signal of synchronization signal.
Step 403: the user by synchronizing channel whether the mark in coverage area is arranged in coverage area
Outside, and according to the other information of this user subframe number as locating for synchronizing channel and uplink-downlink configuration synchronizing channel is configured.
Step 404: the user belongs in the running time-frequency resource of the synchronization signal outside coverage area in prespecified, sends step
The synchronizing channel in synchronization signal and step 403 in rapid 402.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification made, equivalent replacement, improve etc., it should be included within the scope of protection of this application.
Claims (12)
1. a kind of synchronous method of communication between devices characterized by comprising
D2D user sends the reference timing-type of signal according to predefined user and physical layer D2D link synchronization source identifies
Corresponding relationship selection physical layer D2D link synchronization source mark；
D2D user generates corresponding synchronization signal according to selected D2D link synchronization source mark；
D2D user detects whether oneself is in cell coverage area, if be not in cell coverage area, D2D user is also
Detect whether to receive the synchronization signal and synchronizing channel of other D2D users；D2D user sends together according to the detection case
Walk signal and synchronizing channel；Wherein D2D user indicates whether this user is in cell coverage area in physics D2D synchronizing channel
It is interior.
2. the method according to claim 1, wherein if the D2D user is in MPS process, according to small
The timing in area sends synchronization signal and synchronizing channel in the preset running time-frequency resource for belonging to the synchronization signal in coverage area.
3. the method according to claim 1, wherein if the D2D user is in outside cell coverage area, and
The synchronization signal and synchronizing channel for receiving other D2D users, according to the synchronisation source of the synchronization signal received with reference to fixed
When type and the synchronizing channel received in covering instruction determine the transmission of synchronization signal and synchronizing channel.
4. the method according to claim 1, wherein if the D2D user is in outside cell coverage area, and
The synchronization signal and synchronizing channel of any other D2D user are not detected, then the D2D user is outside preset coverage area
Resource in send the synchronization signal and synchronizing channel of the user itself.
5. according to the method described in claim 3, it is characterized in that, the D2D user outside the cell coverage area, if
The synchronization Source Type of the synchronization signal of the other D2D users received is the synchronization signal for being not based on cell timing, then the D2D
User is according to the timing of the synchronization signal received in other preset running time-frequency resources for belonging to coverage area external synchronization signal
Forward the synchronization signal received and the synchronizing channel of itself.
6. according to the method described in claim 3, it is characterized in that, the D2D user outside the cell coverage area, if
The synchronization Source Type of the synchronization signal of the other D2D users received is the synchronization signal based on cell timing and receives
Indicate that the user received is in cell coverage area in synchronizing channel, then the D2D user is according to the synchronous letter received
Number timing forwarded in the running time-frequency resource outside other preset coverage areas the synchronization signal received and the D2D user from
The synchronizing channel of body.
7. according to the method described in claim 3, it is characterized in that, the D2D user outside the cell coverage area, if
The synchronization Source Type of the synchronization signal of the other D2D users received is the synchronization signal based on cell timing and receives
Indicate that the user received is in outside cell coverage area in synchronizing channel, then the D2D user is according to the synchronization received
The timing of signal forwards the synchronization signal received the and described D2D user certainly in the resource outside other preset coverage areas
The synchronizing channel of body；Or the D2D user according to the timing of the synchronization signal received outside other preset coverage areas
Resource in the forwarding user itself synchronization signal and synchronizing channel.
8. method according to any one of claims 1 to 7, which is characterized in that the timing-type that refers to includes that cell is fixed
When and non-cell timing.
9. method according to any one of claims 1 to 7, which is characterized in that the D2D user is according to selected
D2D link synchronization source, which identifies, to be determined Zadoff-Chu sequence and generates primary synchronization signal and secondary synchronization signal, and main synchronization is believed
It number is mapped to auxiliary synchronous signal on the running time-frequency resource of synchronous subframe, according to reference to regularly sending synchronous subframe, wherein main same
The root sequence index for walking signal can be pre-set sequence index or the root sequence index of network configuration, secondary synchronization signal
Sequence scrambling code can for physical layer D2D link synchronization source identify.
10. according to the method described in claim 2, it is characterized in that, the D2D user believes according to the downlink of the cell received
Number as send synchronization signal timing.
11. according to the method described in claim 3, it is characterized in that, other D2D that the D2D user is received by decoding
The synchronization signal that user sends obtains physical layer D2D link synchronization source mark, according to predefined physical layer D2D link synchronization
Source mark refers to the corresponding relationship of timing-type with synchronisation source, obtains the synchronization Source Type of the synchronization signal received.
12. a kind of device, including initialization module, detection judging module, transmission control module, it is characterised in that:
Initialization module, the reference timing-type and physical layer D2D link for sending signal according to predefined user are same
The corresponding relationship selection physical layer D2D link synchronization source mark and generation synchronizing sequence of step source mark；
Judging module is detected, for determining the parameter for sending control module: cell coverage area situation, other D2D users' is same
Walk the detection case of signal and synchronizing channel；
Control module is sent, the physics of parameter and initialization module selection for determining according to the detection judging module
Layer D2D link synchronization source identify determine synchronization signal and synchronizing channel sending method, and send the synchronization signal with it is synchronous
Channel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410663957.4A CN105898856B (en) | 2014-11-20 | 2014-11-20 | A kind of communication between devices synchronous method and device |
| PCT/CN2015/094988 WO2016078601A1 (en) | 2014-11-20 | 2015-11-19 | Device-to-device communication synchronization method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410663957.4A CN105898856B (en) | 2014-11-20 | 2014-11-20 | A kind of communication between devices synchronous method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105898856A CN105898856A (en) | 2016-08-24 |
| CN105898856B true CN105898856B (en) | 2019-08-06 |
Family
ID=56013305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410663957.4A Active CN105898856B (en) | 2014-11-20 | 2014-11-20 | A kind of communication between devices synchronous method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105898856B (en) |
| WO (1) | WO2016078601A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106303935B (en) * | 2016-10-19 | 2020-01-21 | 海能达通信股份有限公司 | Synchronization source coordination method and device |
| EP3829201B1 (en) * | 2018-07-26 | 2024-02-28 | Beijing Xiaomi Mobile Software Co., Ltd. | Method, device, and system for transmitting system information between internet-of-vehicles devices |
| CN110830211A (en) * | 2018-08-10 | 2020-02-21 | 华为技术有限公司 | Method and device for transmitting synchronization signal |
| CN111263432B (en) * | 2019-01-04 | 2021-06-29 | 维沃移动通信有限公司 | Information transmission method and equipment |
| CN110537374B (en) * | 2019-06-28 | 2022-09-30 | 北京小米移动软件有限公司 | Data sending method, data receiving method, device and equipment |
| CN110769401B (en) * | 2019-10-30 | 2021-06-01 | 云南宾飞科技有限公司 | Short-distance high-precision positioning method and positioning system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625438A (en) * | 2011-01-31 | 2012-08-01 | 电信科学技术研究院 | Method, system and equipment for carrying out synchronization |
| WO2013177447A1 (en) * | 2012-05-23 | 2013-11-28 | Kyocera Corporation | Allocating device-to-device (d2d) communication resources |
| CN103702408A (en) * | 2012-09-27 | 2014-04-02 | 上海贝尔股份有限公司 | Method and device for realizing uplink synchronization |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013034165A (en) * | 2011-06-27 | 2013-02-14 | Ntt Docomo Inc | Wireless communication method, wireless communication system and mobile stations |
| CN103108405B (en) * | 2011-11-15 | 2017-09-08 | 中兴通讯股份有限公司 | Wireless communications method and system |
-
2014
- 2014-11-20 CN CN201410663957.4A patent/CN105898856B/en active Active
-
2015
- 2015-11-19 WO PCT/CN2015/094988 patent/WO2016078601A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625438A (en) * | 2011-01-31 | 2012-08-01 | 电信科学技术研究院 | Method, system and equipment for carrying out synchronization |
| WO2013177447A1 (en) * | 2012-05-23 | 2013-11-28 | Kyocera Corporation | Allocating device-to-device (d2d) communication resources |
| CN103702408A (en) * | 2012-09-27 | 2014-04-02 | 上海贝尔股份有限公司 | Method and device for realizing uplink synchronization |
Non-Patent Citations (1)
| Title |
|---|
| Remaining details on D2D synchronization signal design，R1-145108;ITL Inc.;《3GPP TSG RAN WG1 Meeting #79》;20141109;全文 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016078601A1 (en) | 2016-05-26 |
| CN105898856A (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6843463B2 (en) | Methods for device-to-device communication synchronization | |
| CN105898856B (en) | A kind of communication between devices synchronous method and device | |
| JP6979942B2 (en) | Downlink and synchronization technology for narrowband wireless communication | |
| US11122530B2 (en) | Method and apparatus of synchronizing device to device terminals in time and frequency | |
| KR102373038B1 (en) | Method and apparatus for receiving signals in device-to-device wireless communication | |
| CN104335639B (en) | Detection reference signal (SRS) mechanism for device-to-device in cell (D2D) communication | |
| EP3493621B1 (en) | Terminal device, communication method and integrated circuit | |
| US9681472B2 (en) | Method and apparatus for mapping identities to device-to-device synchronization sequences | |
| CN106256156A (en) | The power of device-to-device synchronizing signal controls | |
| JP2020515110A (en) | Signal scrambling sequence technique for wireless communication | |
| EP3177092B1 (en) | Terminal device, base station device, communication method and integrated circuit | |
| EP3179822B1 (en) | Terminal device and method for device-to-device communication | |
| JP6275262B2 (en) | Method and apparatus for enabling a wireless device to communicate with a wireless network in an unlicensed spectrum | |
| US10411872B2 (en) | Terminal device, integrated circuit, and communication method | |
| WO2015003396A1 (en) | Method and device for sending synchronization signal and achieving synchronization among base stations | |
| CN110149188A (en) | Sending and receiving method, base station, terminal, the readable medium of reference signal | |
| US10674464B2 (en) | Method and device for synchronizing frame numbers between Device-to-Device communication supported user devices | |
| CN104936166B (en) | A kind of signal sending, receiving method and device | |
| CN104618985B (en) | Sending method, device, equipment and the system of equipment discovery signal | |
| CN103874045B (en) | Indicate and determine the method and apparatus of the home cell of cell | |
| CN105009657B (en) | A kind of transmission of synchronization signal, synchronization among base stations method and apparatus | |
| KR20210067919A (en) | Method and apparatus for detecting location of target terminals in wireless communication system | |
| OA17829A (en) | Method and apparatus for the synchronization of a device-to-device communication | |
| KR20140080110A (en) | Method and Apparatus for Configuring Transmission Resource of Discovery Signal in Device-to-Device Communication, Method and Apparatus for Detecting other User Equipment using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190202 Address after: 100192 No. 231, 2nd Floor, No. 1 Complex Building, Qinghe Yongtai Garden, Haidian District, Beijing Applicant after: Beijing wisdom partner Technology Co., Ltd. Address before: 056300 No. 15, Unit 3, No. 158 Trade Road, Handan City, Hebei Province Applicant before: Wu Huapu |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: An Xudong Document name: Notice of approval of right to request |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201112 Address after: Room 661, building 1, yard 20, Kechuang 14th Street, Beijing Economic and Technological Development Zone, 100176 Patentee after: Core wireless (Beijing) communication technology Co., Ltd Address before: 100192 No. 231, 2nd Floor, No. 1 Complex Building, Qinghe Yongtai Garden, Haidian District, Beijing Patentee before: BEIJING ZHIXUN PARTNER TECHNOLOGY Co.,Ltd. |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: An Xudong Document name: Notice of conformity |