CN110248404A - The method, apparatus and terminal device of synchronizing information - Google Patents
The method, apparatus and terminal device of synchronizing information Download PDFInfo
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- CN110248404A CN110248404A CN201810195145.XA CN201810195145A CN110248404A CN 110248404 A CN110248404 A CN 110248404A CN 201810195145 A CN201810195145 A CN 201810195145A CN 110248404 A CN110248404 A CN 110248404A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
- H04W56/0095—Synchronisation arrangements determining timing error of reception due to propagation delay estimated based on signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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Abstract
The invention discloses a kind of information synchronization method, device and mobile terminals, this method comprises: the synchronization signal around the detection of first movement terminal, determines synchronization signal to be synchronized by preset rules；If it is determined that synchronization signal be to be issued by the first synchronisation source, then the synchronization priority of the first movement terminal is determined as the first priority；Wherein, first synchronisation source includes satellite or base station；If it is determined that synchronization signal be to be issued by the second mobile terminal, then the synchronization priority of the first movement terminal is determined as third priority；Wherein, the third priority is lower than the second priority of the second mobile terminal；It is synchronized using determining synchronization signal, determining priority is added to the other mobile terminals being sent to other than first movement terminal in synchronization signal.The embodiment of the present invention can be improved the synchronization accuracy of the mobile terminal except base station network coverage area.
Description
Technical field
The present invention relates to the method, apparatus and terminal of the communications field/field of terminal more particularly to a kind of synchronizing information to set
It is standby.
Background technique
In a communication network, some information need to be aligned between base station, user terminal and network node, such as the time pair
Therefore standard can carry out synchronizing information by synchronization signal between base station, user terminal and network node.
Here synchronizing information is introduced by taking LTE-V2X synchronization scenarios as an example, referring to Figure 1, Fig. 1 is based on drilling for a long time
Into the same of the vehicle-to-vehicle communication technology of technology-(LTE-V2X, Long term evolution-Vehicle to Everything)
Step mechanism scene figure.The synchronisation source of information are as follows: base station and Global Satellite Navigation System (GNSS, Global Navigation
Satellite System).Mark for synchronisation source includes: secondary link synchronization sequence identifier (SL SSID, Sidelink
Synchronizing Sequence Identity) and subsequent 1bit marker.
1bit marker is used to characterize whether vehicle-mounted user terminal is in network range, all to be in network coverage
Interior vehicle-mounted user terminal (obtains synchronous reference signal from base station), then 1bit marker is set as 1, other, is set to 0.SL
SSID identifier is the mark in order to distinguish base station and GNSS two types synchronisation source, and base station is that vehicle-mounted user is whole under normal conditions
The direct synchronisation source at end, SL SSID are distributed by base station, wherein the SL of the vehicle-mounted user terminal except network coverage
SSID value range is 170~335；The SLSSID value range of vehicle-mounted user terminal within network coverage is 2
~167.If vehicle-mounted user terminal, using GNSS as synchronisation source, SL SSID is set as 0.
Therefore, the differentiation of three priority may be implemented in current LTE-V2X synchronization mechanism, and the first priority is marked with 1bit
Position is known to distinguish vehicle-mounted user terminal whether within network coverage；The second level is vehicle-mounted outside network coverage
User terminal, but only experienced 1 jump；The third level is still the vehicle-mounted user terminal outside network coverage, and experienced 2
It jumps.
Since the Physical Synchronization ID value range of SL is 0~335, it is divided into two groups, every group of 168 values, so this current
Kind LTE-V2X grade distribution mechanism can only distinguish three grades, i.e., at most there was only 3 priority.Therefore locking range can not be very
Meet the synchronisation requirement of the vehicle-mounted user terminal outside network coverage well, equally, under some other synchronization scenarios,
There is also similar problems, such as the synchronization scenarios in Internet of Things, are not repeated herein.
Summary of the invention
The purpose of the embodiment of the present invention is that the method, apparatus and terminal device of a kind of synchronizing information are provided, to improve base station
The synchronization accuracy of mobile terminal except network coverage.
In a first aspect, a kind of information synchronization method is provided, this method comprises:
Synchronization signal around the detection of first movement terminal, determines synchronization signal to be synchronized by preset rules；
If it is determined that synchronization signal be to be issued by the first synchronisation source, then by the synchronization priority of the first movement terminal
It is determined as the first priority；Wherein, first synchronisation source includes satellite or base station；
If it is determined that synchronization signal be to be issued by the second mobile terminal, then it is synchronizing for the first movement terminal is preferential
Grade is determined as third priority；Wherein, the third priority is lower than the second priority of the second mobile terminal；
It is synchronized using determining synchronization signal, determining priority is added in synchronization signal and is sent to the first shifting
Other mobile terminals other than dynamic terminal.
Second aspect provides a kind of synchronizing information device, is applied to first movement terminal, comprising:
Determining module detects the synchronization signal of surrounding, determines synchronization signal to be synchronized by preset rules；
First setup module, it is when determining synchronization signal is issued by the first synchronisation source, the first movement is whole
The synchronization priority at end is determined as the first priority；Wherein, first synchronisation source includes satellite or base station；
Second setup module is then moved described first when determining synchronization signal is issued by the second mobile terminal
The synchronization priority of dynamic terminal is determined as third priority；Wherein, the third priority is lower than the second of the second mobile terminal
Priority；
Sending module is synchronized using determining synchronization signal, and determining priority is added in synchronization signal and is sent out
Give other mobile terminals other than first movement terminal.
The third aspect provides a kind of terminal device, which includes processor, memory and be stored in described deposit
On reservoir and the computer program that can run on the processor, the computer program are realized when being executed by the processor
The step of method as described in relation to the first aspect.
Fourth aspect provides a kind of computer readable storage medium, which is characterized in that the computer-readable storage medium
Computer program is stored in matter, and the step of method as described in relation to the first aspect is realized when the computer program is executed by processor
Suddenly.
In embodiments of the present invention, first movement terminal can be determined by the synchronization signal around detection by preset rules
Synchronization signal to be synchronized, it is contemplated that the number that signal is passed is more, and often signal confidence level can be low, therefore, can basis
Own priority, is determined as the priority lower than synchronisation source by the priority of synchronisation source, synchronisation source here can be satellite or
Base station is also possible to other mobile terminals.Then the priority of itself is added in synchronization signal again and is sent to first movement
Other mobile terminals other than terminal, facilitate other mobile terminals to detect, in this way, mobile terminal can carry out synchronization signal
Transmitting, and the series of priority will be unrestricted, synchronization signal transmits hop count and distance significantly after the transmitting of mobile terminal
Increase.Moreover, mobile terminal can select the signal of high priority to synchronize according to the priority of the synchronization signal of detection,
Improve the synchronization accuracy of the mobile terminal except base station network coverage area.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the air interface synchronization scene figure provided by the invention based on LTE-V2X；
Fig. 2 is the implementation process schematic diagram for the information synchronization method that one embodiment of the present of invention provides；
Fig. 3 is the air interface synchronization scene figure provided by the invention based on LTE-V2X；
Fig. 4 is a kind of structural schematic diagram for the synchronizing information device that one embodiment of the present of invention provides；
Fig. 5 is a kind of structural schematic diagram for the mobile terminal that one embodiment of the present of invention provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Technical solution of the present invention can be applied to various communication systems, such as: global system for mobile communications (GSM,
Global System of Mobile communication), CDMA (CDMA, Code Division Multiple
Access) system, wideband code division multiple access (WCDMA, Wideband Code Division Multiple Access), general point
Group wireless traffic (GPRS, General Packet Radio Service), long term evolution (LTE, Long Term
Evolution)/enhancing long term evolution (LTE-A, Long Term Evolution advanced), NR (New Radio) etc..
User terminal (UE, User Equipment), also referred to as mobile terminal (Mobile Terminal), movement
User equipment etc., can be through wireless access network (for example, RAN, Radio Access Network) and one or more core nets
It is communicated, user equipment can be mobile terminal, such as mobile phone (or being " honeycomb " phone) and with mobile terminal
Computer, for example, it may be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they with
Wireless access network exchanges language and/or data.
Base station can be the base station (BTS, Base Transceiver Station) in GSM or CDMA, be also possible to
Base station (NodeB) in WCDMA can also be evolved base station (eNB or e-NodeB, evolutional Node in LTE
B) and the base station 5G (gNB), the present invention does not limit, but for convenience of description, and following embodiments are illustrated by taking gNB as an example.
The technical solution provided below in conjunction with attached drawing, each embodiment that the present invention will be described in detail.
In next generation mobile communication, mobile terminal can support the side of link of multiple types (unicast or broadcast) simultaneously
Formula, for example, secondary link (SL, Sidelink), uplink (UL, Uplink), downlink (DL, Downlink).In honeycomb
In network, before user terminal is communicated with network, it is necessary first to synchronous with cell, i.e. cell searching is found and obtains,
Then cell system information is received the decode, so as to normally be communicated and operated in cell.User is whole
The down-going synchronous reference signal (SRS, Synchronization Reference Signal) sent by base station is held to obtain
Synchronizing information.In order to realize normal communication and operation, signal generally requires the time alignment (Align) of transmission, base when transmitting
It stands, often will do it synchronizing information between user terminal and network node.
Referring to Fig. 1, the information synchronization mechanism in LTE-V2X synchronization scenarios is described in detail.1bit marker is used
Come whether the vehicle-mounted user terminal of standard is in network range, it is all in the network coverage vehicle-mounted user terminal (from
DL obtains synchronous reference signal), then 1bit marker is set as 1, is otherwise set to 0.Only have UE1, UE8 to be in network as shown in figure 1
Within coverage area, therefore 1bit identifier is 1, other are all 0.
SL SSID identifier is the mark in order to distinguish base station and GNSS two types synchronisation source.As shown in figure 1 UE6, UE7,
UE8, UE9, the synchronisation source (base station) that wherein UE6, UE7 use base station to be pre-configured, SL SSID value range are 170~335 (places
Except network coverage)；The SL SSID value range of UE8 (within network coverage) is 2~167；UE9's
Synchronous reference signal derives from UE8, therefore the SL SSID value range of UE9 is as UE8.If vehicle-mounted user terminal is with GNSS
As synchronisation source, SL SSID is set as 0, as shown in figure 1 UE1, UE2, UE3, UE4, UE5, although wherein UE1 is in the network coverage
In range, but since it is configured as selecting GNSS as synchronisation source, so SL SSID is 0.UE3, UE5 as shown in figure 1,
UE10 except they are all in network coverage, and experienced 2 jumps, so their SL SSID identifier is SL
SSID+168。
According to above-mentioned rule, the differentiation of three priority is may be implemented in current LTE-V2X synchronization mechanism, can be distinguished altogether
3 priority are embodied as: 1bit marker in network coverage is (SL SSID, 1), is outside network coverage
(SL SSID, 0), network coverage is outer and experienced 2 jumps, then is (SL SSID+168,0).When SL SSID value is 0
It indicates that its synchronisation source is GNSS, is otherwise base station, but it is base station or GNSS that this, which can only distinguish synchronisation source,.
Above-mentioned grade distribution mechanism, will lead to locking range can not meet the movement outside network coverage well
The synchronisation requirement of terminal when different grades of by the data separations such as the identifier mobile terminal of the prior art, can only distinguish net
2 except network coverage area jump, and are higher than just cannot be distinguished other than the network coverage that 2 jump.
To solve the above problems, the embodiment of the present invention proposes a kind of information synchronization method, it should be noted that in this theory
In bright book embodiment, for ease of description, part description can be described by taking car networking LTE-V2X synchronization scenarios as an example, Ke Yili
Solution, is described, only this specification embodiment is to core concept of the present invention by taking car networking LTE-V2X synchronization scenarios as an example
Exemplary illustration, and be not construed as limiting the scope of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
Referring to Fig. 2, Fig. 2 is a kind of flow diagram of information synchronization method provided in an embodiment of the present invention.This method
Include:
Step S100, the synchronization signal of first movement terminal detection surrounding determine synchronous letter to be synchronized by preset rules
Number；
Here the synchronization signal detected can be issued by two homochronousness sources.Specifically, first kind synchronisation source is most initial
The synchronisation source of synchronization signal out, such synchronisation source such as can be base station, satellite or roadside unit (RSU, Road Side
Unit) etc., for ease of description, such synchronisation source is referred to as the first synchronisation source in this specification embodiment.Second homochronousness source is
Mobile terminal, mobile terminal can forward the synchronizing information in the synchronization signal received.So, mobile terminal itself can obtain
The synchronization signal for taking first kind synchronisation source to issue, the synchronization signal that also available second homochronousness source issues.
First movement terminal can be any mobile terminal in synchronizing network, for convenience of describing, this specification embodiment
In, the executing subject of this method is referred to as first movement terminal.
In synchronizing information scene, often there are many synchronisation sources around mobile terminal, as shown in Figure 1, so moving
Terminal just may detect that many synchronization signals, at this point it is possible to after determining synchronization signal to be synchronized to carry out by preset rules
Continuous synchronous working.Here the synchronization signal to be synchronized determined, the often higher signal of reliability hereinafter can be to this explanation
Determine that the concrete mode of synchronization signal specifically describes, and wouldn't repeat herein in book one or more embodiment.
Step S102, however, it is determined that synchronization signal be to be issued by the first synchronisation source, then by the first movement terminal
Synchronous priority is determined as the first priority；
Synchronous priority can characterize the reliability of synchronisation source, and synchronous priority is higher, show the signal that synchronisation source issues
More reliable, the higher signal of synchronous priority generally can further account in some cases letter preferentially by as synchronization signal certainly
Number intensity.
In practical applications, synchronous priority can be characterized by default mark, for example, letter can be characterized with number
Number priority, for example, can be indicated with 0~n, number is bigger, indicates that priority is lower.
First synchronisation source such as base station, satellite is the synchronisation source of synchronous highest priority, and using the first synchronisation source as synchronization
The mobile terminal in source, priority are just lower than the priority of the first synchronisation source, i.e. the first priority is excellent lower than the first synchronisation source
First grade.For example, the priority that can indicate the first synchronisation source with 0, use 1 indicate the first priority.
Step S104, however, it is determined that synchronization signal be to be issued by the second mobile terminal, then by the first movement terminal
Synchronization priority be determined as third priority；Wherein, the third priority is lower than the second priority of the second mobile terminal；
For convenience of description, here by step S100, the synchronisation source determined from mobile terminal, referred to as second is mobile
Terminal.If the synchronisation source of first movement terminal be mobile terminal, in view of signal through propagation after reliability it is inevitable
It can reduce, then, after the propagation jumped by one, the synchronization priority that mobile terminal can be set reduces level-one.
Therefore, third priority here is less than the second priority of the second mobile terminal.For example, if second is excellent
First grade is 2, then third priority can be 3, number is bigger, and priority is lower.
Step S106 is synchronized using determining synchronization signal, and determining priority is added in synchronization signal and is sent out
Give other mobile terminals other than first movement terminal.
After determining synchronization signal, it can be synchronized using determining synchronization signal, for example carry out time alignment
It operates, in the embodiment of the present invention, synchronous specifying information is not defined.
It is synchronized for the ease of other mobile terminals, first movement terminal can be by synchronizing information with the shape of synchronization signal
Formula is sent, for example other mobile terminals other than first movement terminal can be sent in the form of broadcast, in this way can be with
Other terminals are facilitated to detect.
The signal of other terminals selection high reliablity synchronizes for convenience, in the synchronization for determining first movement terminal
After priority, determining priority can be added in synchronization signal, be then sent to other other than first movement terminal
Mobile terminal.
The information synchronization method that this specification embodiment provides, first movement terminal pass through the synchronization signal around detection,
Synchronization signal to be synchronized can be determined by preset rules, it is contemplated that the number that signal is passed is more, often the meeting of signal confidence level
It is low, therefore, own priority can be determined as according to the priority of synchronisation source by the priority lower than synchronisation source, here same
Step source can be satellite or base station, be also possible to other mobile terminals.Then the priority of itself is added to synchronization signal again
In be sent to other mobile terminals other than first movement terminal, facilitate other mobile terminals to detect, in this way, mobile terminal can
To transmit synchronization signal, and the series of priority will be unrestricted, and synchronization signal passes after the transmitting of mobile terminal
It passs hop count and distance greatly increases.Moreover, mobile terminal can select high priority according to the priority of the synchronization signal of detection
Signal synchronize, improve the synchronization accuracy of the mobile terminal except base station network coverage area.
For the ease of better understanding technical characteristic, means and the effect of the application, below to this specification one or more
Information synchronization method in a embodiment is described further, and the concept not made referrals to hereinafter can be found in correlation hereinbefore
Description.
In this specification one or more embodiment, mobile terminal can periodically carry out above-mentioned steps, both periodically
Ground carries out synchronizing information.Mobility based on mobile terminal, after each synchronizing cycle updates, the network environment around mobile terminal
It is likely to change a lot, therefore when mobile terminal detects synchronization signal after each synchronized update period, and does not know
The synchronization priority that road itself is in network environment be it is how many, therefore, mobile terminal can in each synchronized update period
Then SRS signal around detecting determines the grade of signal to be synchronized, then determines own tier.
In this specification one or more embodiment, when determining synchronization signal to be synchronized by preset rules, if inspection
When having stronger base station/satellite-signal in the signal measured, can preferentially it be synchronized using the signal.So, if detecting
The signal strength of first synchronization signal is not less than the first preset threshold, then using the first synchronization signal as synchronous letter to be synchronized
Number, wherein the first synchronization signal is issued by the first synchronisation source.
First preset threshold is preset threshold value, synchronous when the intensity of the first synchronization signal is not less than the threshold value
The reliability in source is often higher than the reliability of mobile terminal.The specific value of first preset threshold is determined by actual application conditions
Fixed, the application is not specifically limited in this embodiment.
And if the signal strength of the first synchronization signal detected less than the first preset threshold when, then can further determine that
It whether there is echo signal in second synchronization signal, the second synchronization signal here is that synchronization signal, mesh are issued by mobile terminal
Marking signal is the signal that signal strength is greater than the second preset threshold.If there is echo signal, then by priority in echo signal
Highest signal is as synchronization signal to be synchronized.
Under the first synchronization signal and insecure situation (signal strength is less than the first preset threshold), can further it go
Judge whether there is the second synchronization signal of high reliablity, and the whether reliable standard of the second synchronization signal, second can be passed through
Preset threshold judges.Here the second preset threshold is also preset threshold value, when the intensity of the second synchronization signal is greater than
When the threshold value, it can think that the synchronization signal is reliability, the specific value of the second preset threshold is determined by actual application conditions
Fixed, the application is not specifically limited in this embodiment.
By the above-mentioned means, can determine that the synchronisation source of high reliability carries out synchronizing information, mobile terminal is improved
The precision of synchronous information.
In this specification one or more embodiment, using the signal of highest priority in echo signal as to be synchronized
When synchronization signal, it is contemplated that in the case that first movement terminal surrounding mobile device is more, it is possible that more synchronous letter
Number, it therefore, can be strongest by signal strength in the signal of highest priority in order to further choose the synchronisation source of high reliablity
Signal, as synchronization signal to be synchronized, to further increase the precision of the information of mobile terminal synchronization.
In this specification one or more embodiment, first is sent to the priority determined to be added in synchronization signal
When other mobile terminals other than mobile terminal, synchronization signal can be scrambled by characterizing the mark of synchronous priority,
Then the other mobile terminals synchronization signal after scrambling being sent to other than first movement terminal.
In this specification one or more embodiment, when determining synchronization signal to be synchronized by preset rules, if detection
The synchronization signal issued to mobile terminal, then descramble synchronization signal to obtain the synchronization priority of mobile terminal, then just
The synchronization priority that can be obtained according to descrambling, determines synchronization signal to be synchronized, is that will synchronize priority most under normal circumstances
High signal is as synchronization signal.
Scrambled transmission mechanism is carried out by using synchronization signal of the different identification to different priorities, by different priorities
Synchronisation source distinguish, to not interfered between different priorities synchronisation source.As synchronization signal priority number increases, it is in
Farther except network coverage, more mobile terminals can also obtain synchronization.
Referring to Fig. 3, being discussed in detail in this specification one or more embodiment, passing through below with reference to LTE-V2X scene
The mark for characterizing synchronous priority carries out scrambled mode to synchronization signal.Under the scene, mobile terminal described previously is vehicle
Carry user terminal.
Fig. 3 is the vehicle-mounted user itself of 1~n of number expression based on the air interface synchronization scene figure under LTE-V2X scene, in figure
The synchronization priority of synchronization signal, synchronous priority number is smaller, and synchronization accuracy is higher.In this scenario, synchronization signal is main
It is divided into two major classes: first is that the DL SRS that base station issues；Second is that the SL SRS that vehicle-mounted user issues.It is for convenience of description, characterization is same
The mark for walking priority is referred to as scrambling number.
After vehicle-mounted user successfully gets synchronization signal, the synchronization priority by obtaining synchronisation source can determine oneself
Synchronous priority, priority distribution and differentiation mechanism are as follows:
1. the synchronization priority of DL SRS signal is set as 0 grade, highest priority is scrambled without ID；
2. the SRS that vehicle-mounted user obtains is if it is DL type, synchronizing priority is just 1 grade, and grade be 1 it is vehicle-mounted
When user transmits synchronous reference signal, ID scrambling is carried out to SRS, scrambling number is ID1；
3. the SRS type that vehicle-mounted user obtains is SL, if to when the SRS priority for being descrambled to obtain the signal is n,
Scrambling number is IDn, then the synchronization priority of the vehicle-mounted user itself adds 1, and the synchronous reference of vehicle-mounted user's transmission automatically
The scrambling number of signal is ID (n+1).Wherein IDn takes the value greater than 356, and n is natural number, and vehicle-mounted user's synchronous reference signal is preferential
Grade number is bigger, and priority is lower.
In Fig. 3, the vehicle-mounted user of label 1 indicates the region for being greater than the first preset threshold in DL SRS signal intensity,
Synchronisation source is obtained from DL SRS, therefore the priority of its synchronous reference signal is 1, the scrambling ID of the SRS of its own is ID1；
Shadow region, the vehicle-mounted user SL SRS intensity that expression synchronous reference signal priority is 1 are greater than the region of the second preset threshold,
If other vehicle-mounted users obtain SRS (i.e. using the SRS of the user as synchronisation source) from the user, the synchronization of other vehicle-mounted users
Reference signal priority is 2, scrambling ID is ID2.
Therefore, that the synchronisation source that synchronous reference signal priority is 0 transmits is DL SRS, and highest priority is scrambled without ID；
When synchronous reference signal priority is >=1, what synchronisation source transmitted is SL SRS, has ID scrambling, due to the Physical Synchronization of usual SL
ID value range is 0~355, so value > 356 of scrambling ID.As priority number increases, priority is lower, synchronizes essence
It is also poorer to spend.Each vehicle-mounted user obtains the SRS's after getting SRS synchronisation source, according to the descrambling to SRS scrambling id information
Priority, so that it is determined that itself synchronous reference signal priority and scrambling id information.
In this specification one or more embodiment, mobile terminal quantity is more, in order to reduce the letter between mobile terminal
Number interference, the mobile terminal of adjacent priority can follow frame dislocation transmission mechanism, misplace and transmit in frame when transmitting SRS on SL
In mechanism, the reference signal of adjacent priority can be transmitted on the different location of SL subframe.
So, the priority determined is being added to the other movements being sent to other than first movement terminal in synchronization signal
When terminal, it can first determine that position of the synchronization signal of the second mobile terminal transmission in SL subframe here will for convenience of describing
The position is known as first position.Then, then by the synchronization signal of first movement terminal be arranged in the second position in SL subframe into
Row transmission, wherein the second position is any position that first position is different on SL.
Frame dislocation transmission mechanism transmits the reference signal of adjacent priority on the different location of SL subframe, to eliminate
Co-channel interference between the synchronous reference signal of adjacent priority.For example, in the grey area Fig. 3, if priority is respectively 1,2
Vehicle-mounted user without frame misplace transmit, then will have very big co-channel interference between the user in gray area.
Frame dislocation transmission mechanism can eliminate co-channel interference between the reference signal of adjacent priority, to reduce whole
Interference, since priority differs between biggish mobile terminal distance often farther out, and the communication range of mobile terminal is opposite
It is lesser, so the main co-channel interference for considering to inhibit two neighboring priority, the reference letter without considering non-adjacent priority
Co-channel interference between number.
It, can be according to signal strength when mobile terminal is detected simultaneously by the synchronization signal of different priorities in same subframe
And synchronous priority is selected, to obtain optimal synchronous reference signal.
In addition, not only can effectively inhibit to interfere using frame dislocation transmission mechanism for frame shift transport mechanism
The problem of, but also SL sub-frame resources can be saved, allow synchronization signal to undergo more hop counts, to improve base station network
The synchronization accuracy of more mobile terminals except coverage area.
In the information synchronization method that this specification one or more embodiment provides, first movement terminal passes through detection surrounding
Synchronization signal, synchronization signal to be synchronized can be determined by preset rules, it is contemplated that the number that signal is passed is more, often believes
Number confidence level can be low, therefore, can be determined as own priority lower than synchronisation source preferential according to the priority of synchronisation source
Grade, synchronisation source here can be satellite or base station, be also possible to other mobile terminals.Then the priority of itself is added again
The other mobile terminals being sent to other than first movement terminal into synchronization signal, facilitate other mobile terminals to detect, in this way,
Mobile terminal can transmit synchronization signal, and the series of priority will be unrestricted, and synchronization signal passes through mobile terminal
Transmitting after, transmit hop count and distance and greatly increase.Moreover, mobile terminal can according to the priority of the synchronization signal of detection,
The signal of selection high priority synchronizes, and improves the synchronization accuracy of the mobile terminal except base station network coverage area.
The above are information synchronization methods provided by the embodiments of the present application, are based on same thinking, and the embodiment of the present application also mentions
For corresponding synchronizing information device, as shown in figure 4, the device specifically includes:
Determining module 201 detects the synchronization signal of surrounding, determines synchronization signal to be synchronized by preset rules；
First setup module 202, when determining synchronization signal is issued by the first synchronisation source, by the first movement
The synchronization priority of terminal is determined as the first priority；Wherein, first synchronisation source includes satellite or base station；
Second setup module 203, when determining synchronization signal is issued by the second mobile terminal, then by described first
The synchronization priority of mobile terminal is determined as third priority；Wherein, the of the third priority lower than the second mobile terminal
Two priority；
Sending module 204 is synchronized using determining synchronization signal, and determining priority is added in synchronization signal
The other mobile terminals being sent to other than first movement terminal.
In this specification embodiment, have in many to the specific implementation method that information synchronizes, in a kind of embodiment
In, the determining module 201 is specifically used for:
If the signal strength of the first synchronization signal detected is not less than the first preset threshold, by the described first synchronous letter
Number be used as synchronization signal to be synchronized；Wherein, first synchronization signal is issued by the first synchronisation source；
If the signal strength of the first synchronization signal detected exists less than the first preset threshold, and in the second synchronization signal
Echo signal, then using the signal of highest priority in the echo signal as synchronization signal to be synchronized；Wherein, described second
Synchronization signal is issued by mobile terminal, and the echo signal is the signal that signal strength is greater than the second preset threshold.
In one embodiment, the determining module 201 is specifically used for:
By the strongest signal of signal strength in the signal of the highest priority, as synchronization signal to be synchronized.
In one embodiment, the transmitting module 204 is specifically used for:
Synchronization signal is scrambled by the mark of the determining priority of characterization；
Other mobile terminals synchronization signal after scrambling being sent to other than first movement terminal.
In one embodiment, the determining module 201 is specifically used for:
If detecting the synchronization signal that mobile terminal issues, synchronization signal is descrambled to obtain the synchronization of mobile terminal
Priority；
According to the synchronization priority that descrambling obtains, synchronization signal to be synchronized is determined.
In one embodiment, the sending module 204 is specifically used for:
Determine first position of the synchronization signal of the second mobile terminal transmission in SL subframe；
The second position that the synchronization signal of the first terminal is arranged in SL subframe is transmitted；Wherein, described
Two positions are any position different from first position in the position for be used for transmission synchronization signal.
In one embodiment, the mobile terminal is vehicle-mounted user terminal.
Device provided in an embodiment of the present invention can be realized each mistake that terminal device is realized in the embodiment of the method for Fig. 1
Journey, to avoid repeating, which is not described herein again.Device provided by the invention can be by default rule by the synchronization signal around detection
Then determine synchronization signal to be synchronized, it is contemplated that the number that signal is passed is more, and often signal confidence level can be low, therefore, can
According to the priority of synchronisation source, own priority to be determined as to the priority lower than synchronisation source, synchronisation source here be can be
Satellite or base station are also possible to other mobile terminals.Then the priority of itself is added in synchronization signal again and is sent to
Other mobile terminals other than one mobile terminal, facilitate other mobile terminals to detect, in this way, mobile terminal can be believed synchronous
Number transmitted, and the series of priority will be unrestricted, synchronization signal after the transmitting of mobile terminal, transmit hop count and away from
From greatly increasing.Moreover, mobile terminal according to the priority of the synchronization signal of detection, can select the signal of high priority to carry out
It is synchronous, improve the synchronization accuracy of the mobile terminal except base station network coverage area.
Fig. 5 is the block diagram of the mobile terminal of another embodiment of the present invention.Mobile terminal 700 shown in fig. 5 includes: at least
One processor 701, memory 702, at least one network interface 704 and user interface 703.It is each in mobile terminal 700
Component is coupled by bus system 705.It is understood that bus system 705 is logical for realizing the connection between these components
Letter.Bus system 705 further includes power bus, control bus and status signal bus in addition in addition to including data/address bus.But it is
For the sake of clear explanation, in Fig. 5 various buses are all designated as bus system 705.
Wherein, user interface 703 may include display, keyboard or pointing device (for example, mouse, trace ball
(trackball), touch-sensitive plate or touch screen etc..
It is appreciated that the memory 702 in the embodiment of the present invention can be volatile memory or nonvolatile memory,
It or may include both volatile and non-volatile memories.Wherein, nonvolatile memory can be read-only memory (Read-
Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), the read-only storage of erasable programmable
Device (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or
Flash memory.Volatile memory can be random access memory (Random Access Memory, RAM), be used as external high
Speed caching.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static random access memory
(Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory
(Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data Rate
SDRAM, DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links
Dynamic random access memory (Synch link DRAM, SLDRAM) and direct rambus random access memory (Direct
Rambus RAM, DRRAM).The memory 702 of the system and method for description of the embodiment of the present invention is intended to include but is not limited to these
With the memory of any other suitable type.
In some embodiments, memory 702 stores following element, executable modules or data structures, or
Their subset of person or their superset: operating system 7021 and application program 7022.
Wherein, operating system 7021 include various system programs, such as ccf layer, core library layer, driving layer etc., are used for
Realize various basic businesses and the hardware based task of processing.Application program 7022 includes various application programs, such as media
Player (Media Player), browser (Browser) etc., for realizing various applied business.Realize the embodiment of the present invention
The program of method may be embodied in application program 7022.
In embodiments of the present invention, mobile terminal 700 further include: be stored on memory 709 and can be on the processor 710
The computer program of operation, computer program realize following steps when being executed by processor 701:
Synchronization signal around the detection of first movement terminal, determines synchronization signal to be synchronized by preset rules；
If it is determined that synchronization signal be to be issued by the first synchronisation source, then by the synchronization priority of the first movement terminal
It is determined as the first priority；Wherein, first synchronisation source includes satellite or base station；
If it is determined that synchronization signal be to be issued by the second mobile terminal, then it is synchronizing for the first movement terminal is preferential
Grade is determined as third priority；Wherein, the third priority is lower than the second priority of the second mobile terminal；
It is synchronized using determining synchronization signal, determining priority is added in synchronization signal and is sent to the first shifting
Other mobile terminals other than dynamic terminal.
The method that the embodiments of the present invention disclose can be applied in processor 701, or be realized by processor 701.
Processor 701 may be a kind of IC chip, the processing capacity with signal.During realization, the above method it is each
Step can be completed by the integrated logic circuit of the hardware in processor 701 or the instruction of software form.Above-mentioned processing
Device 701 can be general processor, digital signal processor (DSP, Digital Signal Processor), dedicated integrated electricity
Road (ASIC, Application Specific Integrated Circuit), ready-made programmable gate array (FPGA, Field
Programmable Gate Array) either other programmable logic device, discrete gate or transistor logic, discrete
Hardware component.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.General procedure
Device can be microprocessor or the processor is also possible to any conventional processor etc..In conjunction with disclosed in the embodiment of the present invention
Method the step of can be embodied directly in hardware decoding processor and execute completion, or with hardware in decoding processor and soft
Part block combiner executes completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only storage
In the computer readable storage medium of this fields such as device or electrically erasable programmable memory, register maturation.The computer
Readable storage medium storing program for executing is located at memory 702, and processor 701 reads the information in memory 702, completes above-mentioned side in conjunction with its hardware
The step of method.Specifically, computer program is stored on the computer readable storage medium, computer program is by processor 701
Each step such as above-mentioned signal synchronizing method embodiment is realized when execution.
It is understood that the embodiment of the present invention description these embodiments can with hardware, software, firmware, middleware,
Microcode or combinations thereof is realized.For hardware realization, processing unit be may be implemented in one or more specific integrated circuits
(ASIC, Application Specific Integrated Circuits), digital signal processor (DSP, Digital
Signal Processing), digital signal processing appts (DSPD, DSP Device), programmable logic device (PLD,
Programmable Logic Device), field programmable gate array (FPGA, Field-Programmable Gate
Array), general processor, controller, microcontroller, microprocessor, other electronics lists for executing function of the present invention
In member or combinations thereof.
For software implementations, can by execute the embodiment of the present invention described in function module (such as process, function etc.) come
Realize technology described in the embodiment of the present invention.Software code is storable in memory and is executed by processor.Memory can
With portion realizes in the processor or outside the processor.
Optionally, following steps be can also be achieved when computer program is executed by processor 701:
Optionally, described to determine synchronization signal to be synchronized by preset rules, it specifically includes:
If the signal strength of the first synchronization signal detected is not less than the first preset threshold, by the described first synchronous letter
Number be used as synchronization signal to be synchronized；Wherein, first synchronization signal is issued by the first synchronisation source；
If the signal strength of the first synchronization signal detected exists less than the first preset threshold, and in the second synchronization signal
Echo signal, then using the signal of highest priority in the echo signal as synchronization signal to be synchronized；Wherein, described second
Synchronization signal is issued by mobile terminal, and the echo signal is the signal that signal strength is greater than the second preset threshold.
Optionally, described using the signal of highest priority in the echo signal as synchronization signal to be synchronized, specifically
Include:
By the strongest signal of signal strength in the signal of the highest priority, as synchronization signal to be synchronized.
Optionally, it is described determining priority is added to be sent in synchronization signal it is other other than first movement terminal
Mobile terminal specifically includes:
Synchronization signal is scrambled by the mark of the determining priority of characterization；
Other mobile terminals synchronization signal after scrambling being sent to other than first movement terminal.
Optionally, described to determine synchronization signal to be synchronized by preset rules, it specifically includes:
If detecting the synchronization signal that mobile terminal issues, synchronization signal is descrambled to obtain the synchronization of mobile terminal
Priority；
According to the synchronization priority that descrambling obtains, synchronization signal to be synchronized is determined.
Optionally, it is described determining priority is added to be sent in synchronization signal it is other other than first movement terminal
Mobile terminal specifically includes:
Determine that the synchronization signal that second mobile terminal is sent links the first position in SL subframe in pair；
The second position that the synchronization signal of the first movement terminal is arranged in SL subframe is transmitted；Wherein, institute
Stating the second position is any position different from first position in SL subframe.
Optionally, the mobile terminal is vehicle-mounted user terminal.
Mobile terminal 700 can be realized each process that mobile terminal is realized in previous embodiment, to avoid repeating, here
It repeats no more.
In this specification embodiment, first movement terminal can be determined by the synchronization signal around detection by preset rules
Synchronization signal to be synchronized, it is contemplated that the number that signal is passed is more, and often signal confidence level can be low, therefore, can basis
Own priority, is determined as the priority lower than synchronisation source by the priority of synchronisation source, synchronisation source here can be satellite or
Base station is also possible to other mobile terminals.Then the priority of itself is added in synchronization signal again and is sent to first movement
Other mobile terminals other than terminal, facilitate other mobile terminals to detect, in this way, mobile terminal can carry out synchronization signal
Transmitting, and the series of priority will be unrestricted, synchronization signal transmits hop count and distance significantly after the transmitting of mobile terminal
Increase.Moreover, mobile terminal can select the signal of high priority to synchronize according to the priority of the synchronization signal of detection,
Improve the synchronization accuracy of the mobile terminal except base station network coverage area.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program realizes each process of above- mentioned information synchronous method embodiment, and energy when the computer program is executed by processor
Reach identical technical effect, to avoid repeating, which is not described herein again.Wherein, the computer readable storage medium, such as only
Read memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk
Or CD etc..
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (16)
1. a kind of information synchronization method characterized by comprising
Synchronization signal around the detection of first movement terminal, determines synchronization signal to be synchronized by preset rules；
If it is determined that synchronization signal be to be issued by the first synchronisation source, then the synchronization priority of the first movement terminal is determined
For the first priority；Wherein, first synchronisation source includes satellite or base station；
If it is determined that synchronization signal be to be issued by the second mobile terminal, then it is the synchronization priority of the first movement terminal is true
It is set to third priority；Wherein, the third priority is lower than the second priority of the second mobile terminal；
It is synchronized using determining synchronization signal, determining priority is added in synchronization signal and is sent to first movement end
Other mobile terminals other than end.
2. the method as described in claim 1, which is characterized in that described to determine synchronization signal to be synchronized by preset rules, tool
Body includes:
If the signal strength of the first synchronization signal detected is not less than the first preset threshold, first synchronization signal is made
For synchronization signal to be synchronized；Wherein, first synchronization signal is issued by the first synchronisation source；
If the signal strength of the first synchronization signal detected is less than the first preset threshold, and in the second synchronization signal, there are targets
Signal, then using the signal of highest priority in the echo signal as synchronization signal to be synchronized；Wherein, described second is synchronous
Signal is issued by mobile terminal, and the echo signal is the signal that signal strength is greater than the second preset threshold.
3. method according to claim 2, which is characterized in that the signal by highest priority in the echo signal is made
For synchronization signal to be synchronized, specifically include:
By the strongest signal of signal strength in the signal of the highest priority, as synchronization signal to be synchronized.
4. the method as described in claim 1, which is characterized in that described determining priority is added in synchronization signal sends
To other mobile terminals other than first movement terminal, specifically include:
Synchronization signal is scrambled by the mark of the determining priority of characterization；
Other mobile terminals synchronization signal after scrambling being sent to other than first movement terminal.
5. the method as described in claim 1, which is characterized in that described to determine synchronization signal to be synchronized by preset rules, tool
Body includes:
If detecting the synchronization signal that mobile terminal issues, synchronization signal is descrambled to obtain synchronizing preferentially for mobile terminal
Grade；
According to the synchronization priority that descrambling obtains, synchronization signal to be synchronized is determined.
6. the method as described in claim 1, which is characterized in that described determining priority is added in synchronization signal sends
To other mobile terminals other than first movement terminal, specifically include:
Determine that the synchronization signal that second mobile terminal is sent links the first position in SL subframe in pair；
The second position that the synchronization signal of the first movement terminal is arranged in SL subframe is transmitted；Wherein, described
Two positions are any position different from first position in SL subframe.
7. such as any the method for claim 1-6, which is characterized in that the mobile terminal is vehicle-mounted user terminal.
8. a kind of synchronizing information device, which is characterized in that be applied to first movement terminal, comprising:
Determining module detects the synchronization signal of surrounding, determines synchronization signal to be synchronized by preset rules；
First setup module, when determining synchronization signal is issued by the first synchronisation source, by the first movement terminal
Synchronous priority is determined as the first priority；Wherein, first synchronisation source includes satellite or base station；
Second setup module, it is when determining synchronization signal is issued by the second mobile terminal, then the first movement is whole
The synchronization priority at end is determined as third priority；Wherein, the third priority is second preferential lower than the second mobile terminal
Grade；
Sending module is synchronized using determining synchronization signal, and determining priority is added in synchronization signal and is sent to
Other mobile terminals other than first movement terminal.
9. device as claimed in claim 8, which is characterized in that the determining module is specifically used for:
If the signal strength of the first synchronization signal detected is not less than the first preset threshold, first synchronization signal is made
For synchronization signal to be synchronized；Wherein, first synchronization signal is issued by the first synchronisation source；
If the signal strength of the first synchronization signal detected is less than the first preset threshold, and in the second synchronization signal, there are targets
Signal, then using the signal of highest priority in the echo signal as synchronization signal to be synchronized；Wherein, described second is synchronous
Signal is issued by mobile terminal, and the echo signal is the signal that signal strength is greater than the second preset threshold.
10. device as claimed in claim 9, which is characterized in that the determining module is specifically used for:
By the strongest signal of signal strength in the signal of the highest priority, as synchronization signal to be synchronized.
11. device as claimed in claim 8, which is characterized in that the transmitting module is specifically used for:
Synchronization signal is scrambled by the mark of the determining priority of characterization；
Other mobile terminals synchronization signal after scrambling being sent to other than first movement terminal.
12. device as claimed in claim 8, which is characterized in that the determining module is specifically used for:
If detecting the synchronization signal that mobile terminal issues, synchronization signal is descrambled to obtain synchronizing preferentially for mobile terminal
Grade；
According to the synchronization priority that descrambling obtains, synchronization signal to be synchronized is determined.
13. device as claimed in claim 8, which is characterized in that the sending module is specifically used for:
Determine first position of the synchronization signal of the second mobile terminal transmission in SL subframe；
The second position that the synchronization signal of the first terminal is arranged in SL subframe is transmitted；Wherein, the second
It is set to any position different from first position in the position for be used for transmission synchronization signal.
14. such as any described device of claim 8-13, which is characterized in that the mobile terminal is vehicle-mounted user terminal.
15. a kind of mobile terminal characterized by comprising memory, processor and be stored on the memory and can be in institute
The computer program run on processor is stated, such as claim 1 to 7 is realized when the computer program is executed by the processor
Any one of described in method the step of.
16. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program, the step of method as described in any one of claims 1 to 7 is realized when the computer program is executed by processor.
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| CN201810195145.XA CN110248404A (en) | 2018-03-09 | 2018-03-09 | The method, apparatus and terminal device of synchronizing information |
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| CN201810195145.XA CN110248404A (en) | 2018-03-09 | 2018-03-09 | The method, apparatus and terminal device of synchronizing information |
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