CN107734633A - A kind of method and device of synchronous signal transmission - Google Patents
A kind of method and device of synchronous signal transmission Download PDFInfo
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- CN107734633A CN107734633A CN201610666557.8A CN201610666557A CN107734633A CN 107734633 A CN107734633 A CN 107734633A CN 201610666557 A CN201610666557 A CN 201610666557A CN 107734633 A CN107734633 A CN 107734633A
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- 238000001514 detection method Methods 0.000 claims description 83
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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Abstract
The invention discloses a kind of method and device of synchronous signal transmission.This method includes：Base station is sent when sending synchronizing signal according to the cycle corresponding to the synchronizing signal, and the synchronizing signal includes PSS signals and SSS signals；When the base station is to the mobile terminal transmission synchronizing signal, each synchronizing signal is sent by multiple time slots, to cause the mobile terminal to receive the synchronizing signal and complete to access, so as to realize the purpose of Synchronization Design, synchronous search and Stochastic accessing under multi-beam, the covering scene of more numerology parameters.
Description
Technical field
The present embodiments relate to the method and dress of the technical field of communication, more particularly to a kind of synchronous signal transmission
Put.
Background technology
At present, as the diversified development of communication requirement, the correspondingly development to 5G bring larger challenge, challenge it
First, higher transmission rate.In the case where maximum downstream transmission rate is 20Gbps, bigger transmission bandwidth is necessary hand
One of section.More idle high band (maximum more than 100GHz) and the high band of free time can be exploited, therefore the sky
Not busy high band has very big attraction, and 5G will be directed to high band transmission and be standardized.
There is very big large scale to be lost, directly influence the transmission of signal because its wavelength is shorter for high frequency band signal
Distance, in order to solve this problem, sample larger beamforming gains compensate path loss be one preferably selection, i.e.,
Base station can obtain larger array gain in a certain direction by larger aerial array to improve signal in this direction
Quality.
Broadcast channel also have it is identical the characteristics of, but in order that broadcast content can have same covering, broadcast
Signal needs also exist for stronger array gain, but is limited to the directionality of array, and present common practice is different by poll
The full MPS process of timesharing is realized in direction.
The content of the invention
The purpose of the embodiment of the present invention is to propose a kind of method and device of synchronous signal transmission, it is intended to solve how
Under multi-beam, the covering scene of more numerology parameters the problem of Synchronization Design, synchronous search and Stochastic accessing.
To use following technical scheme up to this purpose, the embodiment of the present invention：
In a first aspect, a kind of method of synchronous signal transmission, methods described include：
Base station is sent, the synchronizing signal includes when sending synchronizing signal according to the cycle corresponding to the synchronizing signal
PSS signals and SSS signals；
When the base station is to the mobile terminal transmission synchronizing signal, each synchronizing signal is sent by multiple time slots, with
So that the mobile terminal receives the synchronizing signal and completes to access.
Preferably, the direction for the synchronizing signal that each time slot is sent is different.
Preferably, when the base station is to the mobile terminal transmission synchronizing signal, each synchronizing signal passes through multiple time slots
Send, including：
If the synchronization slot number of the base station is N, the PSS signals have M PSS sequence, each PSS sequences
There is K time slot, meet N=K*M.
Preferably, when the base station is to the mobile terminal transmission synchronizing signal, each synchronizing signal passes through multiple time slots
Send, including：
If the synchronization slot number of the base station is N, the PSS signals have MK time slot, meet N=K*M.
Preferably, when the base station is to the mobile terminal transmission synchronizing signal, each synchronizing signal passes through multiple time slots
Send, including：
If the synchronization slot number of the base station is N, at least two different synchronous signal sequences are set, and one of them is same
Step signal sequence adds interference to generate by another synchronous signal sequence, and the number of time slots sum in two synchronous signal sequences is less than
MK, the number of the time slot combination of described two synchronous signal sequences are equal to MK, meet N=K*M.
Preferably, it is described to be sent according to the cycle corresponding to the synchronizing signal, including：
The transmission position of the PSS signals and the transmission position of the SSS signals are fixed bias, and the SSS signals
Number of time slots be equal to supported maximum Cell ID numbers.
Second aspect, a kind of method of synchronous signal transmission, methods described include：
Mobile terminal receives the synchronizing signal that base station is sent, and detection is synchronized to the synchronizing signal, and according to described
The result synchronously detected carries out PBCH detections and SIB detections；The synchronization detects passes through detection for the mobile terminal terminal
The sequence that base station is sent, and cell ID are determined according to shown sequence, and according to the position where correlation peak during synchronous detect
Determine frame timing；
The down-going synchronous information of base station described in the acquisition for mobile terminal, access is selected according to the down-going synchronous information
Resource, and complete Stochastic accessing after the resource information for selecting access is sent into the base station.
Preferably, it is described to synchronize detection to the synchronizing signal, including：
If the time domain parameter and frequency domain parameter of the synchronizing signal meet the numerology UE of Least sampling rate demodulation
Ability, then the synchronous detection supports different numerology UE to access same carrier wave, and is multiplexed identical and synchronously believes
Number.
Preferably, the time domain parameter of the synchronizing signal and frequency domain parameter meet the numerology UE of Least sampling rate
Demodulation ability, including：
For frequency domain using subcarrier in frequency domain width minimum corresponding to the supported numerologyUE of system, time domain is described
Minimum subcarrier in frequency domain width corresponding to a symbol lengths.
Preferably, it is described that PBCH detections are carried out according to the result synchronously detected, including：
If being fixed time-frequency location between the PBCH signals time-frequency location and the synchronizing signal time-frequency location, pass through
The PSS signals and the SSS signals determine the position of the PBCH signals；
PBCH signals are demodulated according to the PBCH positions of determination, and read the information in the PBCH part signals；
PBCH number of time slot is identical with the number of time slot of synchronizing signal, and the transmission signal in each time slot is identical, the transmission
Signal includes：System bandwidth, frame number and/or supported numerology UE.
Preferably, it is described that PBCH detections are carried out according to the result synchronously detected, including：
Mobile terminal directly detects the PBCH corresponding to the time slot S corresponding to optimal synchronizing signal；Or
Mobile terminal merges rear joint-detection to N number of PBCH.
Preferably, it is described PBCH detections are carried out according to the result that synchronously detects before, in addition to：
The mobile terminal terminal judges whether directly to detect optimal synchronizing signal according to the peak-to-average force ratio of synchronizing signal
PBCH corresponding to corresponding time slot S, or by merging rear joint-detection to N number of PBCH.
Preferably, it is described that SIB detections are carried out according to the result synchronously detected, including：
The descending control signaling of the mobile terminal detection control domain obtains SIB message, and when the mobile terminal is supported
During multiple numerology parameters, different numerology UE descending control is broadcasted using different numerology parameters
Signaling；
Wherein, the SIB message includes RACH relevant parameters and different numerology uses different resource locations,
The relevant parameter includes resource location and uses sequence.
Preferably, the described resource information for selecting access is sent to behind the base station completes Stochastic accessing, including：
The mobile terminal sends random sequence to the base station；
The base station determines numerology and synchronization that the mobile terminal uses after the random sequence is received
Detection information；
The base station sends Random Access according to the random sequence information detected to the mobile terminal
Response。
Preferably, the base station sends Random according to the random sequence information detected to the mobile terminal
Access Response, including：
The optimal time slot that the base station is synchronously detected according to corresponding to obtaining the group number of random sequence, and according to described optimal
The precoding of time slot sends RAR information, and the sequence that the base station is detected to obtain is included in the Random Access Response
Arrange the TC RNTI of index, TA, scheduling grant and distribution；
The mobile terminal detects the Random Access Response and determines whether the base station detects success, if
Detect successfully, then the mobile terminal sends MSG3 to the base station, and the MSG3 includes the ID of the mobile terminal, movement eventually
Hold type and Qos；After causing the MSG3 for stating base station and receiving shown terminal transmission, sent to the mobile terminal
MSG4, it includes content at least containing the Termination ID in MSG3, and distributes CRNTI for the mobile terminal.
The third aspect, a kind of device of synchronous signal transmission, described device include：
First sending module, it is described for when sending synchronizing signal, being sent according to the cycle corresponding to the synchronizing signal
Synchronizing signal includes PSS signals and SSS signals；
Second sending module, for mobile terminal send the synchronizing signal when, each synchronizing signal by it is multiple when
Gap is sent, to cause the mobile terminal to receive the synchronizing signal and complete to access.
Preferably, the direction for the synchronizing signal that each time slot is sent is different.
Preferably, second sending module, is specifically used for：
If the synchronization slot number of the base station is N, the PSS signals have M PSS sequence, each PSS sequences
There is K time slot, meet N=K*M.
Preferably, second sending module, is specifically used for：
If the synchronization slot number of the base station is N, the PSS signals have MK time slot, meet N=K*M.
Preferably, second sending module, is specifically used for：
If the synchronization slot number of the base station is N, at least two different synchronous signal sequences are set, and one of them is same
Step signal sequence adds interference to generate by another synchronous signal sequence, and the number of time slots sum in two synchronous signal sequences is less than
MK, the number of the time slot combination of described two synchronous signal sequences are equal to MK, meet N=K*M.
Preferably, first sending module, is specifically used for：
The transmission position of the PSS signals and the transmission position of the SSS signals are fixed bias, and the SSS signals
Number of time slots be equal to supported maximum CellID numbers.
Fourth aspect, a kind of device of synchronous signal transmission, described device include：
Receiving module, for receiving the synchronizing signal of base station transmission；
Detection module, carried out for synchronizing detection to the synchronizing signal, and according to the result synchronously detected
PBCH is detected and SIB detections；The synchronization detects the sequence sent for the mobile terminal terminal by detecting base station, and root
Cell ID are determined according to shown sequence, and frame timing is determined according to the position where correlation peak during synchronous detect；
AM access module, for obtaining the down-going synchronous information of the base station, select to access according to the down-going synchronous information
Resource, and by select access resource information be sent to the base station after complete Stochastic accessing.
Preferably, the detection module, is specifically used for：
If the time domain parameter and frequency domain parameter of the synchronizing signal meet the numerology UE of Least sampling rate demodulation
Ability, then the synchronous detection supports different numerology UE to access same carrier wave, and is multiplexed identical and synchronously believes
Number.
Preferably, the detection module, is additionally operable to：Frequency domain is using minimum corresponding to the supported numerologyUE of system
Subcarrier in frequency domain width, time domain is a symbol lengths corresponding to described minimum subcarrier in frequency domain width.
Preferably, the detection module, is specifically used for：
If being fixed time-frequency location between the PBCH signals time-frequency location and the synchronizing signal time-frequency location, pass through
The PSS signals and the SSS signals determine the position of the PBCH signals；
PBCH signals are demodulated according to the PBCH positions of determination, and read the information in the PBCH part signals；
PBCH number of time slot is identical with the number of time slot of synchronizing signal, and the transmission signal in each time slot is identical, the transmission
Signal includes：System bandwidth, frame number and/or supported numerology UE.
Preferably, the detection module, is specifically used for：
Directly detect the PBCH corresponding to the time slot S corresponding to optimal synchronizing signal；Or
Rear joint-detection is merged to N number of PBCH.
Preferably, described device also includes：
Judge module, it is right to judge whether directly to detect optimal synchronizing signal institute for the peak-to-average force ratio according to synchronizing signal
The PBCH corresponding to time slot S answered, or by merging rear joint-detection to N number of PBCH.
Preferably, the detection module, is specifically used for：
The descending control signaling for detecting control domain obtains SIB message, and when multiple numerology ginsengs are supported in the base station
During number, different numerology UE descending control signaling is broadcasted using different numerology parameters；
Wherein, the SIB message includes RACH relevant parameters and different numerology uses different resource locations,
The relevant parameter includes resource location and uses sequence.
Preferably, the AM access module, including：
First transmitting element, for sending random sequence to the base station；
Determining unit, for after the random sequence is received, determining the numerology that the mobile terminal uses
And synchronous detection information；
Second transmitting element, for sending Random to the mobile terminal according to the random sequence information detected
Access Response。
Preferably, second transmitting element, is specifically used for：
The optimal time slot synchronously detected according to corresponding to obtaining the group number of random sequence, and according to the pre- of the optimal time slot
Coding sends RAR information, the sequence index that detects to obtain comprising the base station in the Random Access Response,
TA, scheduling grant and the TC of distribution RNTI；
Detect the Random Access Response and determine whether the base station detects success, if detecting successfully,
The mobile terminal sends MSG3 to the base station, the MSG3 including mobile terminal ID, mobile terminal style and
Qos；After causing the MSG3 for stating base station and receiving shown terminal transmission, MSG4 is sent to the mobile terminal, it is included
Content distributes CRNTI at least containing the Termination ID in MSG3 for the mobile terminal.
The embodiment of the present invention provides a kind of method and device of synchronous signal transmission, and base station is pressed when sending synchronizing signal
Sent according to the cycle corresponding to the synchronizing signal, the synchronizing signal includes PSS signals and SSS signals；The base station is to movement
When terminal sends the synchronizing signal, each synchronizing signal is sent by multiple time slots, to cause the mobile terminal to receive institute
State synchronizing signal and complete to access, so as to realize under multi-beam, the covering scene of more numerology parameters Synchronization Design, same
Step search and the purpose of Stochastic accessing.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of the method for synchronous signal transmission provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of synchronizing signal provided in an embodiment of the present invention；
Fig. 3 is the structural representation of another synchronizing signal provided in an embodiment of the present invention；
Fig. 4 is the structural representation of another synchronizing signal provided in an embodiment of the present invention；
Fig. 5 is a kind of synchronizing signal generation schematic diagram provided in an embodiment of the present invention；
Fig. 6 is the schematic flow sheet of the method for another synchronous signal transmission provided in an embodiment of the present invention；
Fig. 7 is a kind of schematic diagram synchronously detected provided in an embodiment of the present invention；
Fig. 8 is the wave beam schematic diagram after a kind of PBCH combining data detections provided in an embodiment of the present invention；
Fig. 9 is a kind of high-level schematic functional block diagram of the device of synchronous signal transmission provided in an embodiment of the present invention；
Figure 10 is the high-level schematic functional block diagram of the device of another synchronous signal transmission provided in an embodiment of the present invention.
Embodiment
The embodiment of the present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this
The specific embodiment of place description is used only for explaining the embodiment of the present invention, rather than the restriction to the embodiment of the present invention.In addition also
It should be noted that for the ease of describing, the part related to the embodiment of the present invention rather than entire infrastructure are illustrate only in accompanying drawing.
With reference to figure 1, Fig. 1 is a kind of schematic flow sheet of the method for synchronous signal transmission provided in an embodiment of the present invention.
As shown in figure 1, the method for the synchronous signal transmission includes：
Step 101, base station is sent, the synchronization when sending synchronizing signal according to the cycle corresponding to the synchronizing signal
Signal includes PSS signals and SSS signals；
Specifically, as shown in Fig. 2 Fig. 2 is a kind of structural representation of synchronizing signal provided in an embodiment of the present invention.It is synchronous
Signal includes master sync signal (Primary Synchronization Signal, PSS) and auxiliary synchronous signals (Secondary
Synchronization Signal, SSS) two kinds of signals, sent according to identical cycle T, unlike, each PSS
Send with SSS signals and sent by multiple time slots, the direction that each time slot is sent is different, i.e., each time slot sends different
Beam。
Step 102, when the base station is to the mobile terminal transmission synchronizing signal, each synchronizing signal passes through multiple time slots
Send, to cause the mobile terminal to receive the synchronizing signal and access.
Preferably, the direction for the synchronizing signal that each time slot is sent is different.
Meanwhile the direction of the synchronizing signal of each time slot transmission can also all same.
Preferably, when the base station is to the mobile terminal transmission synchronizing signal, each synchronizing signal passes through multiple time slots
Send, including：
If the synchronization slot number of the base station is N, the PSS signals have M PSS sequence, each PSS sequences
There is K time slot, meet N=K*M.
Specifically, as shown in figure 3, Fig. 3 is the structural representation of another synchronizing signal provided in an embodiment of the present invention.Such as
Shown in Fig. 3, there are K different PSS sequences, meet that N=K*M, different beam correspond to different directions.
PSS signals include K sequential value, and PSS1 and PSS2 include K sequential value of identical, i.e. base station sends M groups bag
Signal containing K sequence, beat respectively to MK direction.Different relative positions by configuring PSS1 and PSS2 indicate M, therefore logical
Cross PSS relevant searches, it may be determined that the beam index j (1 in Beam group<=j<=K), j is ID in group, is led to simultaneously
The relative position for crossing two PSS determines the time timing of M and radio frames, such as the interval between two PSS can be from
Set the inside value { d1, d2 ..., dM }, if at intervals of d1, M=1, the like.As shown in figure 4, Fig. 4 is used to illustrate PSS
M in different interval, T is synchronizing cycle, i.e., two PSS may have M kinds interval value within a synchronizing cycle.
Preferably, when the base station is to the mobile terminal transmission synchronizing signal, each synchronizing signal passes through multiple time slots
Send, including：
If the synchronization slot number of the base station is N, the PSS signals have MK time slot, meet N=K*M.
Postponed a meeting or conference specifically, still by relative position search window length can be caused to become big, during search larger, PSS can be set
Sequence number is that number is N, and synchronous time slot position can be directly determined by search sequence.
Preferably, when the base station is to the mobile terminal transmission synchronizing signal, each synchronizing signal passes through multiple time slots
Send, including：
If the synchronization slot number of the base station is N, at least two different synchronous signal sequences are set, and one of them is same
Step signal sequence adds interference to generate by another synchronous signal sequence, and the number of time slots sum in two synchronous signal sequences is less than
MK, the number of the time slot combination of described two synchronous signal sequences are equal to MK, and each time slot is used to individually send a wave beam, and
The wave beam that different time-gap is sent is different, meets N=K*M.
Specifically, it is different sequences to set PSS1 and PSS2, and PSS2 generation is scrambled by PSS1 information,
N number of combination is found by suitable sequence search, it is assumed that PSS1 sequences number is N1, and PSS2 number is N2, meets N1+N2<
N, the number of combination (PSS1, PSS2) are equal to N, synchronizing signal as shown in Figure 5 generation schematic diagram.
Preferably, it is described to be sent according to the cycle corresponding to the synchronizing signal, including：
The transmission position of the PSS signals and the transmission position of the SSS signals are fixed bias, and the SSS signals
Number of time slots be equal to supported largest cell mark (cell Identification, Cell ID).
A kind of method of synchronous signal transmission provided in an embodiment of the present invention, base station is when sending synchronizing signal, according to institute
Stating cycle transmission, the synchronizing signal corresponding to synchronizing signal includes PSS signals and SSS signals；The base station is to mobile terminal
When sending the synchronizing signal, each synchronizing signal is sent by multiple time slots, and the side of the synchronizing signal of each time slot transmission
To different, to cause the mobile terminal to receive the synchronizing signal and complete to access, so as to realize in multi-beam, more
The purpose of Synchronization Design, synchronous search and Stochastic accessing under the covering scene of numerology parameters.
With reference to figure 6, Fig. 6 is the schematic flow sheet of the method for another synchronous signal transmission provided in an embodiment of the present invention.
As shown in fig. 6, the method for the synchronous signal transmission includes：
Step 601, mobile terminal receives the synchronizing signal that base station is sent, and detection is synchronized to the synchronizing signal, and
According to the result that synchronously detects carry out Physical Broadcast Channel (physical broadcast channel, PBCH) detection and
System information block (system information block, SIB) detects；The synchronization is detected for the mobile terminal terminal
The sequence sent by detecting base station, and cell ID are determined according to shown sequence, and according to correlation peak institute during synchronous detect
Position determine frame timing；
Preferably, it is described to synchronize detection to the synchronizing signal, including：
If the time domain parameter and frequency domain parameter of the synchronizing signal meet the numerology UE of Least sampling rate demodulation
Ability, then the synchronous detection supports different numerology UE to access same carrier wave, and is multiplexed identical and synchronously believes
Number.
Wherein, frequency domain is using subcarrier in frequency domain width minimum corresponding to the supported numerologyUE of system, time domain
For a symbol lengths corresponding to described minimum subcarrier in frequency domain width.
Following information is obtained after synchronization signal detection：The optimal time slot position S (1 of timing, synchronizing signal in frame<=S<
=N), synchronous signal receiver quality, wherein exemplary, synchronous signal receiver quality can be defined as peak-to-average force ratio Q, i.e., synchronous peak
It is worth power and average power ratio.
Specifically, as shown in fig. 7, Fig. 7 is a kind of schematic diagram synchronously detected provided in an embodiment of the present invention.
Preferably, it is described to synchronizing signal progress PBCH detections, including：
If being fixed time-frequency location between the PBCH signals time-frequency location and the synchronizing signal time-frequency location, pass through
The PSS signals and the SSS signals determine the position of the PBCH signals；
PBCH signals are demodulated according to the PBCH positions of determination, and read the information in the PBCH part signals；
PBCH number of time slot is identical with the number of time slot of synchronizing signal, and the transmission signal in each time slot is identical, the transmission
Signal includes：System bandwidth, frame number and/or supported numerology UE.
Preferably, it is described to synchronizing signal progress PBCH detections, including：
Mobile terminal directly detects the PBCH corresponding to the time slot S corresponding to optimal synchronizing signal；Or
Mobile terminal merges rear joint-detection to N number of PBCH.
It is described PBCH detections are carried out according to the result that synchronously detects before, in addition to：
The mobile terminal terminal judges whether directly to detect optimal synchronizing signal according to the peak-to-average force ratio of synchronizing signal
PBCH corresponding to corresponding time slot S, or by merging rear joint-detection to N number of PBCH.
Such as Q>Thr, then carried out according to the PBCH corresponding to the time slot S directly detected corresponding to optimal synchronizing signal,
Otherwise carried out by merging rear joint-detection to N number of PBCH, Thr is predefined threshold value.
The mobile terminal sends the PBCH signals by poll, and the information that the wave beam of each poll is sent is identical, and
And frequency domain position is identical, and merged between the wave beam number obtained after the PBCH is detected, can be that simple wait increases
Benefit merges, or is merged by the way of maximum-ratio combing, and the PBCH signals include：System bandwidth, frame number and/or it can support
Numerology UE.For example, the maximum bandwidth that system bandwidth is supported by current base station；Frame number is the numbering of radio frames；
What Numerology was referred to is different subcarrier widths, sample rate etc.；System supports different numerology, that is, supports not
Subcarrier width together, different use rates etc.；Different numerology UE, refer to and support different sub-carrier width, difference
The UE using rate.
Specifically, as shown in figure 8, Fig. 8 is the wave beam signal after a kind of PBCH combining data detections provided in an embodiment of the present invention
Figure.
Preferably, it is described to synchronizing signal progress SIB detections, including：
The descending control signaling of the mobile terminal detection control domain obtains SIB message, and when the mobile terminal is supported
During multiple numerology parameters, different numerology UE descending control is broadcasted using different numerology parameters
Signaling；
Wherein, the SIB message includes RACH relevant parameters and different numerology uses different resource locations,
The relevant parameter includes resource location and uses sequence.
In addition, SIB message bearing part system message, its transmission is consistent with general data, such as can pass through descending control
Signaling processed indicates a data transmission resources, and for transmitting SIB message, UE is by detecting control signaling, it may be determined that how to read
Take SIB message.
For example, the numerology numbers that base station is supported are X, then base station sets X Stochastic accessing (RACH) resource pool, uses
In different numerology UE access, each resource pool includes Y sequence, and the sequence number of certainly each resource pool can
With difference, such identical numerology UE can be by selecting different sequences to be accessed.
Therefore in SIB message it may be noted that the time-frequency location of X resource pool, and each arrangement set under resource pool.
Step 602, the down-going synchronous information of base station described in the acquisition for mobile terminal, selected according to the down-going synchronous information
The resource of access is selected, and Stochastic accessing is completed after the resource information for selecting access is sent into the base station.
Preferably, the described resource information for selecting access is sent to behind the base station completes Stochastic accessing, including：
The mobile terminal sends random sequence to the base station；
The base station determines numerology and synchronization that the mobile terminal uses after the random sequence is received
Detection information；
The base station sends accidental access response (Random according to the random sequence information detected to the mobile terminal
Access Response)。
Preferably, the base station sends Random according to the random sequence information detected to the mobile terminal
Access Response, including：
The optimal time slot that the base station is synchronously detected according to corresponding to obtaining the group number of random sequence, and according to described optimal
The precoding of time slot sends RAR information, and the sequence that the base station is detected to obtain is included in the Random Access Response
Row sequence number (index), Timing Advance (Time advance, TA), dispatch what is authorized (scheduling grant) and distribute
Temporary Cell Radio Network represents to identify (temporal-Cell radio network temporal temporarily
Identification, TC RNTI)；
The mobile terminal detects the Random Access Response and determines whether the base station detects success, if
Detect successfully, then the mobile terminal sends MSG3 to the base station, and the MSG3 includes the ID of the mobile terminal, movement eventually
Type and service priority (Quality of service, Qos) are held, to cause the base station of stating to receive shown terminal hair
After the MSG3 sent, MSG4 is sent to the mobile terminal, it includes content at least containing the Termination ID in MSG3, and is the shifting
Dynamic terminal distribution Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Cell radio network temporal identification,
CRNTI)。
MSG1 is the accidental access signal that UE is sent, and MSG2 is Random access response；MSG3 sends for UE
The relevant information of oneself, such as device id, UE abilities etc.；MSG4 is the content that base station confirms MSG3, for avoiding that flase drop occurs
Situation.
A kind of method of synchronous signal transmission provided in an embodiment of the present invention, base station is when sending synchronizing signal, according to institute
Stating cycle transmission, the synchronizing signal corresponding to synchronizing signal includes PSS signals and SSS signals；The base station is to mobile terminal
When sending the synchronizing signal, each synchronizing signal is sent by multiple time slots, and the side of the synchronizing signal of each time slot transmission
To different, to cause the mobile terminal to receive the synchronizing signal and complete to access, so as to realize in multi-beam, more
The purpose of Synchronization Design, synchronous search and Stochastic accessing under the covering scene of numerology parameters.
With reference to figure 9, Fig. 9 is a kind of functional module signal of the device of synchronous signal transmission provided in an embodiment of the present invention
Figure.
As shown in figure 9, described device includes：
First sending module 901, for when sending synchronizing signal, being sent according to the cycle corresponding to the synchronizing signal,
The synchronizing signal includes PSS signals and SSS signals；
Second sending module 902, for mobile terminal send the synchronizing signal when, each synchronizing signal passes through multiple
Time slot is sent, to cause the mobile terminal to receive the synchronizing signal and complete to access.
Preferably, the direction for the synchronizing signal that each time slot is sent is different.
Preferably, second sending module 902, is specifically used for：
If the synchronization slot number of the base station is N, the PSS signals have M PSS sequence, each PSS sequences
There is K time slot, each time slot is used to individually send a wave beam, and the wave beam that different time-gap is sent is different, meets N=K*M.
Preferably, second sending module 902, is specifically used for：
If the synchronization slot number of the base station is N, the PSS signals have MK time slot, and each time slot is used for independent
A wave beam is sent, and the wave beam that different time-gap is sent is different, meets N=K*M.
Preferably, second sending module 902, is specifically used for：
If the synchronization slot number of the base station is N, at least two different synchronous signal sequences are set, and one of them is same
Step signal sequence adds interference to generate by another synchronous signal sequence, and the number of time slots sum in two synchronous signal sequences is less than
MK, the number of the time slot combination of described two synchronous signal sequences are equal to MK, meet N=K*M.
Preferably, each time slot is used to individually send a wave beam, and the wave beam that different time-gap is sent is different.
Preferably, first sending module 901, is specifically used for：
The transmission position of the PSS signals and the transmission position of the SSS signals are fixed bias, and the SSS signals
Number of time slots be equal to supported maximum CellID numbers.
The embodiment of the present invention provides a kind of device of synchronous signal transmission, and base station is when sending synchronizing signal, according to described
Cycle corresponding to synchronizing signal sends, and the synchronizing signal includes PSS signals and SSS signals；Sent out to mobile terminal the base station
When sending the synchronizing signal, each synchronizing signal is sent by multiple time slots, to cause the mobile terminal to receive the synchronization
Signal simultaneously is completed to access, so as to realize Synchronization Design, synchronous search under multi-beam, the covering scene of more numerology parameters
And the purpose of Stochastic accessing.
With reference to figure 10, Figure 10 is that the functional module of the device of another synchronous signal transmission provided in an embodiment of the present invention is shown
It is intended to.
As shown in Figure 10, described device includes：
Receiving module 1001, for receiving the synchronizing signal of base station transmission；
Detection module 1002, for synchronizing detection to the synchronizing signal, and according to the result synchronously detected
Carry out PBCH detections and SIB detections；The synchronization detects the sequence sent for the mobile terminal terminal by detecting base station,
And cell ID are determined according to shown sequence, and frame timing is determined according to the position where correlation peak during synchronous detect；
AM access module 1003, for obtaining the down-going synchronous information of the base station, selected according to the down-going synchronous information
The resource of access, and complete Stochastic accessing after the resource information for selecting access is sent into the base station.
Preferably, the detection module 1002, is specifically used for：
If the time domain parameter and frequency domain parameter of the synchronizing signal meet the numerology UE of Least sampling rate demodulation
Ability, then the synchronous detection supports different numerology UE to access same carrier wave, and is multiplexed identical and synchronously believes
Number.
Preferably, the detection module 1002, is additionally operable to：Frequency domain is using corresponding to the supported numerologyUE of system
Minimum subcarrier in frequency domain width, time domain is a symbol lengths corresponding to described minimum subcarrier in frequency domain width.
Preferably, the detection module 1002, is specifically used for：
If being fixed time-frequency location between the PBCH signals time-frequency location and the synchronizing signal time-frequency location, pass through
The PSS signals and the SSS signals determine the position of the PBCH signals；
PBCH signals are demodulated according to the PBCH positions of determination, and read the information in the PBCH part signals；
PBCH number of time slot is identical with the number of time slot of synchronizing signal, and the transmission signal in each time slot is identical, the transmission
Signal includes：System bandwidth, frame number and/or supported numerology UE.
Preferably, the detection module 1002, is specifically used for：
Directly detect the PBCH corresponding to the time slot S corresponding to optimal synchronizing signal；Or
Rear joint-detection is merged to N number of PBCH.
Preferably, described device also includes：
Judge module, it is right to judge whether directly to detect optimal synchronizing signal institute for the peak-to-average force ratio according to synchronizing signal
The PBCH corresponding to time slot S answered, or by merging rear joint-detection to N number of PBCH.
Preferably, the detection module 1002, is specifically used for：
The descending control signaling for detecting control domain obtains SIB message, and when multiple numerology ginsengs are supported in the base station
During number, different numerology UE descending control signaling is broadcasted using different numerology parameters；
Wherein, the SIB message includes RACH relevant parameters and different numerology uses different resource locations,
The relevant parameter includes resource location and uses sequence.
Preferably, the AM access module 1003, including：
First transmitting element, for sending random sequence to the base station；
Determining unit, for after the random sequence is received, determining the numerology that the mobile terminal uses
And synchronous detection information；
Second transmitting element, for sending Random to the mobile terminal according to the random sequence information detected
Access Response。
Preferably, second transmitting element, is specifically used for：
The optimal time slot synchronously detected according to corresponding to obtaining the group number of random sequence, and according to the pre- of the optimal time slot
Coding sends RAR information, the sequence index that detects to obtain comprising the base station in the Random Access Response,
TA, scheduling grant and the TC of distribution RNTI；
Detect the Random Access Response and determine whether the base station detects success, if detecting successfully,
The mobile terminal sends MSG3 to the base station, the MSG3 including mobile terminal ID, mobile terminal style and
Qos；After causing the MSG3 for stating base station and receiving shown terminal transmission, MSG4 is sent to the mobile terminal, it is included
Content distributes CRNTI at least containing the Termination ID in MSG3 for the mobile terminal.
The embodiment of the present invention provides a kind of device of synchronous signal transmission, and base station is when sending synchronizing signal, according to described
Cycle corresponding to synchronizing signal sends, and the synchronizing signal includes PSS signals and SSS signals；Sent out to mobile terminal the base station
When sending the synchronizing signal, each synchronizing signal is sent by multiple time slots, to cause the mobile terminal to receive the synchronization
Signal simultaneously is completed to access, so as to realize Synchronization Design, synchronous search under multi-beam, the covering scene of more numerology parameters
And the purpose of Stochastic accessing.
The technical principle of the embodiment of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain this
The principle of inventive embodiments, and the limitation to protection domain of the embodiment of the present invention can not be construed in any way.Based on herein
Explanation, those skilled in the art, which would not require any inventive effort, can associate the other specific of the embodiment of the present invention
Embodiment, these modes are fallen within the protection domain of the embodiment of the present invention.
Claims (30)
- A kind of 1. method of synchronous signal transmission, it is characterised in that methods described includes：Base station is sent when sending synchronizing signal according to the cycle corresponding to the synchronizing signal, and the synchronizing signal is believed including PSS Number and SSS signals；When the base station is to the mobile terminal transmission synchronizing signal, each synchronizing signal is sent by multiple time slots, to cause The mobile terminal receives the synchronizing signal and completes to access.
- 2. according to the method for claim 1, it is characterised in that the mutual not phase in direction for the synchronizing signal that each time slot is sent Together.
- 3. method according to claim 1 or 2, it is characterised in that the base station sends the synchronous letter to mobile terminal Number when, each synchronizing signal is sent by multiple time slots, including：If the synchronization slot number of the base station is N, the PSS signals have M PSS sequence, each PSS sequences to have K Individual time slot, meets N=K*M.
- 4. method according to claim 1 or 2, it is characterised in that the base station sends the synchronous letter to mobile terminal Number when, each synchronizing signal is sent by multiple time slots, including：If the synchronization slot number of the base station is N, the PSS signals have MK time slot, meet N=K*M.
- 5. method according to claim 1 or 2, it is characterised in that the base station sends the synchronous letter to mobile terminal Number when, each synchronizing signal is sent by multiple time slots, including：If the synchronization slot number of the base station is N, at least two different synchronous signal sequences, one of synchronous letter are set Number sequence adds interference to generate by another synchronous signal sequence, and the number of time slots sum in two synchronous signal sequences is less than MK, The number of the time slot combination of described two synchronous signal sequences is equal to MK, meets N=K*M.
- 6. method according to claim 1 or 2, it is characterised in that described to be sent out according to the cycle corresponding to the synchronizing signal Send, including：The transmission position of the PSS signals and the transmission position of the SSS signals are fixed bias, and the SSS signals when Gap number is equal to supported maximum Cell ID numbers.
- A kind of 7. method of synchronous signal transmission, it is characterised in that methods described includes：Mobile terminal receives the synchronizing signal that base station is sent, and detection is synchronized to the synchronizing signal, and according to the synchronization The result of detection carries out PBCH detections and SIB detections；The synchronization is detected for the mobile terminal terminal by detecting base station The sequence of transmission, and cell ID are determined according to shown sequence, and determined according to the position where correlation peak during synchronous detect Frame timing；The down-going synchronous information of base station described in the acquisition for mobile terminal, the money of access is selected according to the down-going synchronous information Source, and complete Stochastic accessing after the resource information for selecting access is sent into the base station.
- 8. according to the method for claim 7, it is characterised in that it is described to synchronize detection to the synchronizing signal, including：If the time domain parameter and frequency domain parameter of the synchronizing signal meet the numerology UE of Least sampling rate demodulation energy Power, then the synchronous detection supports different numerology UE to access same carrier wave, and is multiplexed identical and synchronously believes Number.
- 9. according to the method for claim 8, it is characterised in that the time domain parameter and frequency domain parameter of the synchronizing signal meet The numerology UE of Least sampling rate demodulation ability, including：Frequency domain using minimum subcarrier in frequency domain width corresponding to the supported numerologyUE of system, time domain for it is described most A symbol lengths corresponding to small subcarrier in frequency domain width.
- 10. according to the method for claim 7, it is characterised in that described that PBCH is carried out according to the result synchronously detected Detection, including：If it is fixed time-frequency location between the PBCH signals time-frequency location and the synchronizing signal time-frequency location, by described PSS signals and the SSS signals determine the position of the PBCH signals；PBCH signals are demodulated according to the PBCH positions of determination, and read the information in the PBCH part signals；PBCH Number of time slot it is identical with the number of time slot of synchronizing signal, and the transmission signal in each time slot is identical, the transmission signal Including：System bandwidth, frame number and/or supported numerology UE.
- 11. according to the method for claim 7, it is characterised in that described that PBCH is carried out according to the result synchronously detected Detection, including：Mobile terminal directly detects the PBCH corresponding to the time slot corresponding to optimal synchronizing signal；OrMobile terminal merges rear joint-detection to N number of PBCH.
- 12. according to the method for claim 11, it is characterised in that described that PBCH is carried out according to the result synchronously detected Before detection, in addition to：It is right that the mobile terminal terminal judges whether directly to detect optimal synchronizing signal institute according to the peak-to-average force ratio of synchronizing signal The PBCH corresponding to time slot S answered, or by merging rear joint-detection to N number of PBCH.
- 13. according to the method for claim 7, it is characterised in that described that SIB inspections are carried out according to the result synchronously detected Survey, including：The descending control signaling of the mobile terminal detection control domain obtains SIB message, and when mobile terminal support is multiple During numerology parameters, different numerology UE descending control signaling is broadcasted using different numerology parameters；Wherein, the SIB message includes RACH relevant parameters and different numerology uses different resource locations, described Relevant parameter includes resource location and uses sequence.
- 14. according to the method described in claim 7 to 13 any one, it is characterised in that described to believe the resource for selecting access Breath completes Stochastic accessing after being sent to the base station, including：The mobile terminal sends random sequence to the base station；The base station determines numerology and synchronous detection that the mobile terminal uses after the random sequence is received Information；The base station sends Random Access Response according to the random sequence information detected to the mobile terminal.
- 15. according to the method for claim 14, it is characterised in that the base station according to the random sequence information detected to The mobile terminal sends Random Access Response, including：The optimal time slot that the base station is synchronously detected according to corresponding to obtaining the group number of random sequence, and according to the optimal time slot Precoding send RAR information, obtained sequence is detected comprising the base station in the Random Access Response Index, TA, scheduling grant and distribution TC RNTI；The mobile terminal detects the Random Access Response and determines whether the base station detects success, if detection Successful, then the mobile terminal sends MSG3 to the base station, and the MSG3 includes the ID of the mobile terminal, mobile terminal class Type and Qos；After causing the MSG3 for stating base station and receiving shown terminal transmission, MSG4 is sent to the mobile terminal, It includes content at least containing the Termination ID in MSG3, and distributes CRNTI for the mobile terminal.
- 16. a kind of device of synchronous signal transmission, it is characterised in that described device includes：First sending module, for when sending synchronizing signal, being sent according to the cycle corresponding to the synchronizing signal, the synchronization Signal includes PSS signals and SSS signals；Second sending module, for mobile terminal send the synchronizing signal when, each synchronizing signal is sent out by multiple time slots Send, to cause the mobile terminal to receive the synchronizing signal and complete to access.
- 17. device according to claim 16, it is characterised in that the mutual not phase in direction for the synchronizing signal that each time slot is sent Together.
- 18. the device according to claim 16 or 17, it is characterised in that second sending module, be specifically used for：If the synchronization slot number of the base station is N, the PSS signals have M PSS sequence, each PSS sequences to have K Individual time slot, meets N=K*M.
- 19. the device according to claim 16 or 17, it is characterised in that second sending module, be specifically used for：If the synchronization slot number of the base station is N, the PSS signals have MK time slot, meet N=K*M.
- 20. the device according to claim 16 or 17, it is characterised in that second sending module, be specifically used for：If the synchronization slot number of the base station is N, at least two different synchronous signal sequences, one of synchronous letter are set Number sequence adds interference to generate by another synchronous signal sequence, and the number of time slots sum in two synchronous signal sequences is less than MK, The number of the time slot combination of described two synchronous signal sequences is equal to MK, meets N=K*M.
- 21. the device according to claim 16 or 17, it is characterised in that first sending module, be specifically used for：The transmission position of the PSS signals and the transmission position of the SSS signals are fixed bias, and the SSS signals when Gap number is equal to supported maximum CellID numbers.
- 22. a kind of device of synchronous signal transmission, it is characterised in that described device includes：Receiving module, for receiving the synchronizing signal of base station transmission；Detection module, PBCH is carried out for synchronizing detection to the synchronizing signal, and according to the result synchronously detected Detection and SIB detections；The synchronization detects the sequence sent for the mobile terminal terminal by detecting base station, and according to institute Show that sequence determines cell ID, and frame timing is determined according to the position where correlation peak during synchronous detect；AM access module, for obtaining the down-going synchronous information of the base station, the money of access is selected according to the down-going synchronous information Source, and complete Stochastic accessing after the resource information for selecting access is sent into the base station.
- 23. device according to claim 22, it is characterised in that the detection module, be specifically used for：If the time domain parameter and frequency domain parameter of the synchronizing signal meet the numerology UE of Least sampling rate demodulation energy Power, then the synchronous detection supports different numerology UE to access same carrier wave, and is multiplexed identical and synchronously believes Number.
- 24. device according to claim 23, it is characterised in that the detection module, be additionally operable to：Frequency domain can using system Minimum subcarrier in frequency domain width corresponding to the numerologyUE of support, time domain are described minimum subcarrier in frequency domain width A corresponding symbol lengths.
- 25. device according to claim 22, it is characterised in that the detection module, be specifically used for：If it is fixed time-frequency location between the PBCH signals time-frequency location and the synchronizing signal time-frequency location, by described PSS signals and the SSS signals determine the position of the PBCH signals；PBCH signals are demodulated according to the PBCH positions of determination, and read the information in the PBCH part signals；PBCH Number of time slot it is identical with the number of time slot of synchronizing signal, and the transmission signal in each time slot is identical, the transmission signal Including：System bandwidth, frame number and/or supported numerology UE.
- 26. device according to claim 22, it is characterised in that the detection module, be specifically used for：Directly detect the PBCH corresponding to the time slot S corresponding to optimal synchronizing signal；OrRear joint-detection is merged to N number of PBCH.
- 27. device according to claim 26, it is characterised in that described device also includes：Judge module, it is equal according to the peak of synchronizing signal for before PBCH detections are carried out according to the result that synchronously detects Than judging whether directly to detect the PBCH corresponding to the time slot S corresponding to optimal synchronizing signal, or by N number of PBCH Merge rear joint-detection.
- 28. device according to claim 22, it is characterised in that the detection module, be specifically used for：The descending control signaling for detecting control domain obtains SIB message, and when multiple numerology parameters are supported in the base station, Different numerology UE descending control signaling is broadcasted using different numerology parameters；Wherein, the SIB message includes RACH relevant parameters and different numerology uses different resource locations, described Relevant parameter includes resource location and uses sequence.
- 29. according to the device described in claim 22 to 28 any one, it is characterised in that the AM access module, including：First transmitting element, for sending random sequence to the base station；Determining unit, for after the random sequence is received, determining numerology that the mobile terminal uses and same Walk detection information；Second transmitting element, for sending Random Access to the mobile terminal according to the random sequence information detected Response。
- 30. device according to claim 29, it is characterised in that second transmitting element, be specifically used for：The optimal time slot synchronously detected according to corresponding to obtaining the group number of random sequence, and according to the precoding of the optimal time slot RAR information is sent, sequence index, TA for detecting to obtain comprising the base station in the Random Access Response, The scheduling grant and TC RNTI of distribution；Detect the Random Access Response and determine whether the base station detects success, it is described if detecting successfully Mobile terminal sends MSG3 to the base station, and the MSG3 includes ID, mobile terminal style and the Qos of the mobile terminal； After causing the MSG3 for stating base station and receiving shown terminal transmission, MSG4 is sent to the mobile terminal, it includes content At least containing the Termination ID in MSG3, and CRNTI is distributed for the mobile terminal.
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