CN103888962B - The method and apparatus for obtaining bandwidth information - Google Patents
The method and apparatus for obtaining bandwidth information Download PDFInfo
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- CN103888962B CN103888962B CN201210562411.0A CN201210562411A CN103888962B CN 103888962 B CN103888962 B CN 103888962B CN 201210562411 A CN201210562411 A CN 201210562411A CN 103888962 B CN103888962 B CN 103888962B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/20—Negotiating bandwidth
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Abstract
The embodiment of the present invention provides a kind of method and apparatus for obtaining bandwidth information, and method includes：After terminal detects the synchronizing signal of system, physics bandwidth channel PBWCH signals are detected, PBWCH signals are sent in target location, and PBWCH signals are one in L predetermined sequence, target location is one in K predeterminated position, and K and L are the integer more than or equal to 1；Obtain the parameter of PBWCH signals, and the mapping table of the bandwidth information of systemic presupposition and the parameter of PBWCH signals is searched according to the parameter of PBWCH signals, the bandwidth information of system is obtained, the wherein parameter of PBWCH signals includes target location and the predetermined sequence of PBWCH signals.The method and apparatus of acquisition bandwidth information according to embodiments of the present invention, the bandwidth information of corresponding system is obtained by the good PBWCH signals of detection performance, realize the reliable reception of the bandwidth information of system.
Description
Technical field
The present embodiments relate to wireless communication technology, more particularly to a kind of method and apparatus for obtaining bandwidth information.
Background technology
In the prior art, when terminal accesses LTE（Long Term Evolution, Long Term Evolution）During system, it is necessary to first
Search the PBCH in LTE system（Physical Broadcast Channel, Physical Broadcast Channel）Channel, and obtain PBCH
Carrying information in channel.In the carrying information of PBCH channels, bandwidth information is firstly the need of acquisition again.
In heterogeneous network（Heterogeneous Network）In, because the PBCH of different districts can be produced between each other
Stronger interference, terminal is difficult to correctly search PBCH channels, and then can not get bandwidth information, so as to realize terminal
And base station（Node B,NB）Between proper communication.
The content of the invention
The embodiment of the present invention provides a kind of method and apparatus for obtaining bandwidth information, to solve in the prior art due to difference
The PBCH of school district can produce the problem of interference is so as to cause terminal can not get bandwidth information between each other.
The embodiment of the present invention the provides a kind of method for obtaining bandwidth information on one side, including：
After terminal detects the synchronizing signal of system, physics bandwidth channel PBWCH signals, the PBWCH signals are detected
Sent in target location, and the PBWCH signals are one in L predetermined sequence, the target location is K predeterminated position
In one, K and L are the integer more than or equal to 1；
The parameter of the PBWCH signals is obtained, and the band of the systemic presupposition is searched according to the parameter of the PBWCH signals
The mapping table of wide information and the parameter of the PBWCH signals, obtains the bandwidth information of the system, wherein the PBWCH
The parameter of signal includes the target location and the predetermined sequence of the PBWCH signals.
According in a first aspect, in the first possible implementation, it is described obtain the bandwidth information of system after, also
Including：
Physical downlink control channel PDCCH or enhanced Physical Downlink Control Channel are detected in the bandwidth of the system
EPDCCH channels, and obtain on the Physical Downlink Shared Channel PDSCH that the PDCCH or EPDCCH are specified at least one of following
The information of the system：Physical hybrid automatic repeat request indicator channel PHICH configuration informations, system frame number SFN information.
With reference to first aspect or the first possible implementation or second of mode in the cards, the detection
PBWCH signals include：
On each predeterminated position in the K predeterminated position, the sequence signal that is received using the predeterminated position
Related operation is carried out with the L predetermined sequence signal respectively, obtains L correlation；
One that maximum absolute value is chosen from the K × L correlation obtained on the K predeterminated position, if should
Absolute value is more than or equal to predetermined threshold value, then judges to successfully be detected the PBWCH signals, and the mesh of the PBWCH signals
Mark is set to position corresponding to the correlation of the maximum absolute value, and the predetermined sequence of the PBWCH signals is the maximum absolute value
Correlation corresponding to sequence.
Second aspect of the embodiment of the present invention provides a kind of device for obtaining bandwidth information, including：
Detection module, after synchronizing signal for detecting system when terminal, detect PBWCH signals, the PBWCH signals
Sent in target location, and the PBWCH signals are one in L predetermined sequence, the target location is K predeterminated position
In one, K and L are the integer more than or equal to 1；
Searching modul, institute is searched for obtaining the parameter of the PBWCH signals, and according to the parameter of the PBWCH signals
The mapping table of the bandwidth information of systemic presupposition and the parameter of the PBWCH signals is stated, obtains the bandwidth information of the system,
The parameter of wherein described PBWCH signals includes the target location and the predetermined sequence of the PBWCH signals.
According to second aspect, in the first possible implementation, in addition to：
First acquisition module, for after the bandwidth information of system is obtained, PDCCH to be detected in the bandwidth of the system
Or EPDCCH channels, and obtain on the PDSCH that the PDCCH or EPDCCH are specified the letter of at least one of following described system
Breath：PHICH configuration informations, SFN information.
With reference to second aspect or the first possible implementation, in second of possible implementation, the detection
Module is specifically used for：
After terminal detects the synchronizing signal of system, on each predeterminated position in the K predeterminated position, adopt
The sequence signal received with the predeterminated position carries out related operation with the L predetermined sequence signal respectively, obtains L correlation
Value；
One that maximum absolute value is chosen from the K × L correlation obtained on the K predeterminated position, if should
Absolute value is more than or equal to predetermined threshold value, then judges to successfully be detected the PBWCH signals, and the position of the PBWCH signals
Position corresponding to the correlation of the maximum absolute value is set to, the sequence of the PBWCH signals is the correlation of the maximum absolute value
Corresponding sequence；
Wherein, a transmission of the PBWCH signals in K predeterminated position, and the PBWCH signals are L default
One in sequence, K and L are the integer more than or equal to 1.
Third aspect present invention provides a kind of method for obtaining bandwidth information, including：
According to the bandwidth information of system, in the mapping table of the default bandwidth information and the parameter of PBWCH signals
The middle parameter for obtaining the PBWCH signals；
The PBWCH signals are sent using the parameter of the PBWCH signals got, wherein the PBWCH signals
Parameter includes the target location and the predetermined sequence of the PBWCH signals, and the target location is one in K predeterminated position
Individual, the predetermined sequence is one in L predetermined sequence, and K and L are the integer more than or equal to 1.
According to the third aspect, in the first possible implementation, in addition to：
Below being sent on the PDSCH that PDCCH or EPDCCH channels corresponding to bandwidth information in the system are specified at least
The information of one system：PHICH configuration informations, SFN information.
Fourth aspect present invention provides a kind of device for obtaining bandwidth information, including：
Second acquisition module, for the bandwidth information according to system, in the default bandwidth information and PBWCH signals
The parameter of the PBWCH signals is obtained in the mapping table of parameter；
First sending module, for sending the PBWCH signals using the parameter of the PBWCH signals got, its
Described in PBWCH signals parameter including the PBWCH signals the target location and predetermined sequence, the target location be
One in K predeterminated position, the predetermined sequence is one in L predetermined sequence, and K and L are whole more than or equal to 1
Number.
According to fourth aspect, in the first possible implementation, in addition to：
Second sending module, specified for PDCCH or EPDCCH channels corresponding to the bandwidth information in the system
The information of at least one of following system is sent on PDSCH：PHICH configuration informations, SFN information.
As shown from the above technical solution, the method and apparatus provided in an embodiment of the present invention for obtaining bandwidth information, pass through inspection
Its target location of PBWCH signal acquisitions and corresponding predetermined sequence are surveyed, and should by inquiry in default mapping table
The bandwidth information of system corresponding to the target location of PBWCH signals and predetermined sequence acquisition, because PBWCH signals are L default
One of sequence, it is transmitted on one of K predeterminated position, and detection performance is good, it is possible to prevente effectively from the prior art by
PBCH in different districts produces the problem of stronger interference causes terminal to be difficult to the bandwidth information of acquisition system between each other, real
The reliable reception of the bandwidth information of system is showed.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the method flow schematic diagram according to the acquisition bandwidth information of one embodiment of the invention；
Fig. 2 is the method flow schematic diagram according to the acquisition bandwidth information of another embodiment of the present invention；
Fig. 3 is the structural representation according to the device of the acquisition bandwidth information of further embodiment of this invention；
Fig. 4 is the structural representation according to the device of the acquisition bandwidth information of yet another embodiment of the invention；
Fig. 5 is the structural representation according to the device of the acquisition bandwidth information of another embodiment of the present invention；
Fig. 6 is the method flow schematic diagram according to the acquisition bandwidth information of further embodiment of this invention；
Fig. 7 A are the method flow schematic diagram according to the acquisition bandwidth information of yet another embodiment of the invention
Fig. 7 B are the method flow schematic diagram according to the acquisition bandwidth information of another embodiment of the present invention；
Fig. 8 is the method flow schematic diagram according to the acquisition bandwidth information of yet another embodiment of the invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment one
The present embodiment provides a kind of method for obtaining bandwidth information, and the method for the acquisition bandwidth information is applied to LTE network.
To obtain the device of bandwidth information, the device of the acquisition bandwidth information can integrate in the terminal the executive agent of the present embodiment.
As shown in figure 1, the schematic flow sheet of the method for the acquisition bandwidth information according to the present embodiment.
Step 101, after terminal detects the synchronizing signal of system, PBWCH is detected（PhysicalBandwidth
Channel, band width in physical channel）Signal, the PBWCH signals are sent in target location, and the PBWCH signals are L default sequences
One in row, target location is one in K predeterminated position, and K and L are the integer more than or equal to 1.
The synchronizing signal of system includes PSS（Primary Synchronization Signal, master sync signal）And SSS
（Secondary Synchronization Signal, auxiliary synchronous signals）.After terminal detects synchronizing signal, just illustrate eventually
End has been carried out synchronizing sub-frame.Now, the device for obtaining bandwidth information carries out the detection operation of PBWCH signals, to obtain PBWCH
The parameter of signal.PBWCH signals in the present embodiment are one in L predetermined sequence, i.e., PBWCH signals are pre- based on L
If the signal of the predetermined sequence generation in sequence, and the position that the PBWCH signals are sent is one in K predeterminated position
It is individual.The PBWCH signals can be sent by base station on single PBWCH channels, meanwhile, also being sent on the PBWCH channels has and is
The bandwidth information of system.In addition, the autocorrelation performance and cross-correlation of the L predetermined sequence are functional, i.e. the L predetermined sequence
Autocorrelation performance is more than or equal to the first predetermined threshold value, and cross correlation can be less than or equal to the second predetermined threshold value, wherein first is pre-
If threshold value and the second predetermined threshold value can be set according to being actually needed, second predetermined threshold value is preferably 0.
K predeterminated position in the present embodiment, can be the OFDM shared by except PSS signals and SSS signals
（Orthogonal Frequency Division Multiplexing, OFDM）Each OFDM symbol outside symbol
One or more of the position at place, i.e., there are the position of relative position relation, such as PSS signals with PSS signals or SSS signals
The 3rd OFDM symbol above.
Step 102, the parameter of PBWCH signals is obtained, and the bandwidth letter of systemic presupposition is searched according to the parameter of PBWCH signals
Breath and the mapping table of the parameter of PBWCH signals, obtain the bandwidth information of system, the parameter of wherein PBWCH signals includes
The target location of PBWCH signals and predetermined sequence.
The system bandwidth information of the present embodiment be LTE system bandwidth information, it is necessary to preset the bandwidth information of system with
The corresponding relation of PBWCH signal parameters.So, when the device for obtaining bandwidth information detects PBWCH signals, and therefrom obtain should
After PBWCH signal parameters, it is possible to the bandwidth information of LTE system is found by default mapping table.The corresponding pass
It is that table can be stored in advance in the device for obtaining bandwidth information, can also stores in other memories in the terminal, may be used also
To be stored separately on the memory of outside, as long as the device that can be acquired bandwidth information is got.It is pointed out that
Running time-frequency resource shared by the PBWCH signals is different from the running time-frequency resource shared by the synchronizing signal of system, to avoid system
Interference of the synchronizing signal to the PBWCH signals.
According to the method for the acquisition bandwidth information of the present embodiment, by detecting its target location of PBWCH signal acquisitions and right
The predetermined sequence answered, and in default mapping table by inquire about target location and the predetermined sequence of the PBWCH signals come
It is final obtain corresponding to system bandwidth information, because PBWCH signals are one of L predetermined sequences, its K predeterminated position it
It is transmitted on one, detection performance is good, it is possible to prevente effectively from the prior art because the PBCH of different districts is produced between each other
The problem of raw stronger interference causes terminal to be difficult to the bandwidth information of acquisition system, the bandwidth information for realizing system are abutted against
Receive.
Embodiment two
The present embodiment provides a kind of method for obtaining bandwidth information based on embodiment one.
As shown in Fig. 2 the schematic flow sheet of the method for the acquisition bandwidth information according to the present embodiment.
Step 201, after terminal detects the synchronizing signal of system, each predeterminated position in K predeterminated position
On, the sequence signal received using the predeterminated position carries out related operation with L predetermined sequence signal respectively, obtains L phase
Pass is worth.
Terminal can all receive a sequence signal on each predeterminated position.The device for obtaining bandwidth information uses
The sequence signal carries out related operation respectively with L predetermined sequence signal.For concrete example, it is assumed that terminal is in a certain default position
It is R={ r to put the sequence signal received0,r1…rN-1, with the S { sj, 0, sj, 1 ... sj, N-1 } in L predetermined sequence signal
After carrying out related operation, obtained correlation X=r0 × sj, 0+r1 × sj, 1+ ... rN-1 × sj, N-1, wherein N is are more than or waited
In 1 integer, j is the integer more than or equal to 0.Due to a shared K position, so the number of the correlation finally given is
K × L.
Predetermined sequence in the present embodiment can include at least one of following sequence：ZC sequences, m-sequence, Gold sequences
Row.Certainly other sequences are can also be, as long as autocorrelation performance is more than or equal to the first predetermined threshold value, and cross correlation energy
Less than or equal to the second predetermined threshold value, to ensure that the detection performance of the sequence is good.
Step 202, one that maximum absolute value is chosen from the K × L correlation obtained on K predeterminated position, such as
The fruit absolute value is more than or equal to predetermined threshold value, then judges to successfully be detected PBWCH signals, and the target position of PBWCH signals
Position corresponding to the correlation of the maximum absolute value is set to, predetermined sequence corresponding to PBWCH signals is the phase of the maximum absolute value
Sequence corresponding to the value of pass.
The device for obtaining bandwidth information chooses a correlation of maximum absolute value from K × L correlation, and by the phase
Pass value is compared with predetermined threshold value, when the correlation is not less than predetermined threshold value, position and sequence corresponding to the correlation
Row are exactly position and the sequence of the PBWCH signals, so as to judge to detect PBWCH signals.Due in practice, it may appear that base station does not have
Send PBWCH signals, and terminal thinks to detect the situation of PBWCH signals, the restriction of the predetermined threshold value be in order to
The generation of such case is avoided as far as possible.Predetermined threshold value can be set according to being actually needed, such as can be with PBWCH signals
Sequence length it is related.
Step 203, the parameter of PBWCH signals is obtained, and the bandwidth letter of systemic presupposition is searched according to the parameter of PBWCH signals
Breath and the mapping table of the parameter of PBWCH signals, obtain the bandwidth information of system, the parameter of wherein PBWCH signals includes
The target location of PBWCH signals and predetermined sequence.
The step is consistent with the specific implementation of step 102, will not be repeated here.
Alternatively, also after step 203, can also comprise the following steps：
PDCCH is detected in system bandwidth（Physical Downlink Control Channel, physical down control
Channel）Or EPDCCH（Enhanced Physical Downlink Control Channel, enhanced physical down control letter
Road）Channel, and the PDSCH specified in the PDCCH or EPDCCH of same system（Physical Downlink Shared
Channel, Physical Downlink Shared Channel）At least one information below upper acquisition：PHICH（Physical hybrid-ARQ
Indicator channel, physical hybrid automatic repeat request indicator channel）Configuration information, SFN（System Frame
Number, System Frame Number）Information.
In the present embodiment, the carrying information of former PBCH channels is divided into two parts by base station, and a part is bandwidth information, another
Partly it is the other information in addition to bandwidth information, such as PHICH configuration informations and SFN information.By bandwidth information in PBWCH
Individually sent on channel, the other information in addition to bandwidth information is sent on the PDSCH channels that PDCCH is specified or
Sent on the PDSCH channels that EPDCCH is specified so that the other information in addition to bandwidth information can be in system full bandwidth
Scheduled transmission, and then more efficient avoid because the PBCH of different districts produces stronger interference between each other making in the prior art
The problem of terminal is difficult to correctly search PBCH channels is obtained, more ensure that the reliable reception of PBCH carrying information.
Embodiment three
The present embodiment with instantiation come describe the present embodiment how by detect PBWCH signal acquisition systems bandwidth believe
Breath.
As shown in table 1, it is default bandwidth information and the mapping table of PBWCH signal parameters.
Table 1
| System bandwidth | The position of PBWCH signals | Predetermined sequence |
| 1.4MHz | 3rd OFDM symbol before PSS signals | ZC sequences 1 |
| 3MHz | 3rd OFDM symbol before PSS signals | ZC sequences 2 |
| 5MHz | 3rd OFDM symbol before PSS signals | ZC sequences 3 |
| 10MHz | 5th OFDM symbol before PSS signals | ZC sequences 1 |
| 15MHz | 5th OFDM symbol before PSS signals | ZC sequences 2 |
| 20MHz | 5th OFDM symbol before PSS signals | ZC sequences 3 |
As it can be seen from table 1 there is 3 predetermined sequences in the present embodiment, respectively ZC sequences 1, ZC sequences 2 and ZC sequences 3.
There are 2 predeterminated positions in the present embodiment, the 5th OFDM symbol before the 3rd OFDM symbol and PSS signals respectively before PSS signals.
The mapping table is default in the terminal, is obtained for the device for obtaining bandwidth information.
Assuming that after terminal detects the synchronizing signal of system, the device for obtaining bandwidth information is used the 3rd before PSS signals
Two sequence signals received before OFDM symbol and PSS signals on the position of the 5th OFDM symbol, respectively with ZC sequences 1, ZC
Sequence 2 and ZC sequences 3 carry out related operation, obtain totally 2 × 3 correlations.It is assumed that the device for obtaining bandwidth information uses
The sequence signal that the 3rd OFDM symbol receives before PSS signals and ZC sequences 3 carry out the absolute of the correlation that related operation obtains
Value is maximum, then it is 5MHz that can obtain system bandwidth according to the mapping table.
Example IV
The present embodiment provides a kind of device for obtaining bandwidth information, the side of the acquisition bandwidth information for performing embodiment one
Method.
As shown in figure 3, the structural representation of the device for the acquisition bandwidth information according to the present embodiment.The acquisition bandwidth is believed
The device of breath includes detection module 301 and searching modul 302.
Wherein, detection module 301 is used for after terminal detects the synchronizing signal of system, detects PBWCH signals, PBWCH
Signal is sent in target location, and PBWCH signals are one in L predetermined sequence, and target location is in K predeterminated position
One, K and L are the integer more than or equal to 1；Searching modul 302 is used for the parameter for obtaining PBWCH signals, and is believed according to PBWCH
Number parameter search systemic presupposition bandwidth information and PBWCH signals parameter mapping table, obtain the bandwidth letter of system
Breath, the wherein parameter of PBWCH signals include target location and the predetermined sequence of PBWCH signals.
The concrete operation method of the device of the acquisition bandwidth information is consistent with embodiment one, will not be repeated here.
According to the device of the acquisition bandwidth information of the present embodiment, by detecting its target location of PBWCH signal acquisitions and right
The predetermined sequence answered, and obtained in default mapping table by the target location and predetermined sequence of inquiring about the PBWCH signals
The bandwidth information of system corresponding to taking, because PBWCH signals are one of L predetermined sequences, it is enterprising in one of K predeterminated position
Row is sent, and detection performance is good, it is possible to prevente effectively from being produced in the prior art because the PBCH of different districts is mutual stronger
Interference cause terminal the problem of being difficult to the bandwidth information of acquisition system, realize the reliable reception of the bandwidth information of system.
Embodiment five
The device of acquisition bandwidth information of the present embodiment to example IV does further supplementary notes.
As shown in figure 4, the device of the acquisition bandwidth information of the present embodiment is except the detection module 301 included by example IV
Outside searching modul 302, in addition to the first acquisition module 401.First acquisition module 401 is used to obtain in detection module 301
To after the bandwidth information of system, PDCCH or EPDCCH channels are detected in the bandwidth of system, and refer in PDCCH or EPDCCH
The information of at least one of following system is obtained on fixed PDSCH：PHICH configuration informations, SFN information.
Alternatively, the detection module 301 of the present embodiment can be specifically used for：
After terminal detects the synchronizing signal of system, on each predeterminated position in K predeterminated position, using this
The sequence signal that predeterminated position receives carries out related operation with L predetermined sequence signal respectively, obtains L correlation；
One that maximum absolute value is chosen from the K × L correlation obtained on K predeterminated position, if this is absolute
Value is more than or equal to predetermined threshold value, then judges to successfully be detected PBWCH signals, and the position of PBWCH signals is the absolute value
Position corresponding to maximum correlation, the sequence of PBWCH signals is sequence corresponding to the correlation of the maximum absolute value；
Wherein, a transmission of the PBWCH signals in K predeterminated position, and PBWCH signals are in L predetermined sequence
One, K and L are the integer more than or equal to 1.
The concrete operations mode of the device of the acquisition bandwidth information of the present embodiment is consistent with embodiment two or embodiment three,
This is repeated no more.
In the present embodiment, original carrying information in PBCH channels is divided into two parts by base station, and a part is bandwidth information,
Another part is other information in addition to bandwidth information, such as PHICH configuration informations and SFN information.Bandwidth information is existed
Individually sent on PBWCH channels, the other information in addition to bandwidth information is sent on the PDSCH channels that PDCCH is specified
Or sent on the PDSCH channels that EPDCCH is specified so that the other information in addition to bandwidth information can be complete in system
Scheduled transmission in bandwidth, so it is more efficient avoid in the prior art due to different districts PBCH between each other produce it is stronger
The problem of interference causes terminal to be difficult to correctly search PBCH channels, it more ensure that the reliable reception of PBCH carrying information.
Embodiment six
The present embodiment provides another device for obtaining bandwidth information, for performing acquisition of the embodiment one to embodiment three
The method of bandwidth information.
As shown in figure 5, the structural representation of the device for the acquisition bandwidth information according to the present embodiment.The acquisition bandwidth is believed
The device 500 of breath includes at least one first processor 501, the first communication bus 502, first memory 503 and at least one
Individual first communication interface 504.
Wherein, the first communication bus 502 is used to realize connection and the communication between said modules, the first communication interface 504
For being connected and communicating with the network equipment.The bus can be ISA（Industry Standard Architecture, industry
Standard architecture）Bus, PCI（Peripheral Component, external equipment interconnection）Bus or EISA（Extended
Industry Standard Architecture, extended industry-standard architecture）Bus etc..Bus can be one or more
Bar physical circuit, address bus, data/address bus, controlling bus etc. can be divided into when being a plurality of physical circuit.
Wherein, first memory 503 is used to store executable program code, wherein, first processor 501 is by reading the
The executable program code stored in one memory 503 runs program corresponding with executable program code, for：
After terminal detects the synchronizing signal of system, physics bandwidth channel PBWCH signals are detected, PBWCH signals are in mesh
Cursor position is sent, and PBWCH signals are one in L predetermined sequence, and target location is one in K predeterminated position, K with
L is the integer more than or equal to 1；
Obtain PBWCH signals parameter, and according to the parameter of PBWCH signals search systemic presupposition bandwidth information with
The mapping table of the parameter of PBWCH signals, the bandwidth information of system is obtained, the wherein parameter of PBWCH signals is believed including PBWCH
Number target location and predetermined sequence.
Alternatively, first processor 501 can also be by reading the executable program code stored in first memory 503
To run program corresponding with executable program code, after obtaining the bandwidth information of system, reading can also be passed through
The executable program code stored in first memory 503 runs program corresponding with executable program code, for：
PDCCH or EPDCCH channels are detected in the bandwidth of system, and are total in PDCCH or the EPDCCH physical down specified
Enjoy the information that at least one of following system is obtained on channel PDSCH：PHICH configuration informations, SFN information.
Alternatively, first processor 501 can also be by reading the executable program code stored in first memory 503
To run program corresponding with executable program code, for detecting PBWCH signals, can be specifically：
On each predeterminated position in K predeterminated position, the sequence signal received using the predeterminated position is distinguished
Related operation is carried out with L predetermined sequence signal, obtains L correlation；
One that maximum absolute value is chosen from the K × L correlation obtained on K predeterminated position, if this is absolute
Value is more than or equal to predetermined threshold value, then judges to successfully be detected PBWCH signals, and the position of PBWCH signals is the absolute value
Position corresponding to maximum correlation, the sequence of PBWCH signals is sequence corresponding to the correlation of the maximum absolute value.
According to the device 500 of the acquisition bandwidth information of the present embodiment, by detect its target location of PBWCH signal acquisitions and
Corresponding predetermined sequence, and by inquiring about target location and the predetermined sequence of the PBWCH signals in default mapping table
The bandwidth information of system corresponding to acquisition, because PBWCH signals are one of L predetermined sequences, it is on one of K predeterminated position
Be transmitted, detection performance is good, it is possible to prevente effectively from the prior art due to different districts PBCH between each other produce compared with
The problem of strong interference causes terminal to be difficult to the bandwidth information of acquisition system, realize the reliable reception of the bandwidth information of system.
Embodiment seven
The present embodiment provides a kind of method for obtaining bandwidth information, and the method for the acquisition bandwidth information is applied to LTE network.
To obtain the device of bandwidth information, the device of the acquisition bandwidth information can integrate in a base station the executive agent of the present embodiment.
As shown in fig. 6, the schematic flow sheet of the method for the acquisition bandwidth information according to the present embodiment.
Step 601, according to the bandwidth information of system, in default bandwidth information pass corresponding with the parameter of PBWCH signals
It is the parameter that PBWCH signals are obtained in table.
PBWCH signals can be sent on single PBWCH channels by obtaining the device of bandwidth, can also be believed in the PBWCH
System bandwidth information is sent on road., it is necessary to according to bandwidth information to be sent in default correspondence before PBWCH signals are sent
Parameter corresponding to PBWCH signals is searched in relation table.Mapping table includes the bandwidth information of system and the parameter of PBWCH signals
Corresponding relation.
Step 602, PBWCH signals are sent using the parameter of the PBWCH signals got, so that terminal is detecting system
Synchronizing signal after, detect PBWCH signals, obtain PBWCH signals parameter, and according to the parameter of PBWCH signals search system
The mapping table of default bandwidth information and the parameter of PBWCH signals, obtains the bandwidth information of system, wherein PBWCH signals
Parameter including PBWCH signals target location and predetermined sequence, target location be one in K predeterminated position, default sequence
One be classified as in L predetermined sequence, K and L are the integer more than or equal to 1.
K predeterminated position can be included in mapping table, i.e. PBWCH signals can be in one in the K predeterminated position
It is transmitted on individual position, the position is the target location in the present embodiment, and PBWCH signals are based in L predetermined sequence
The signal of one predetermined sequence generation.
The device of the bandwidth information of acquisition system is being got and bandwidth information to be sent from mapping table
After the target location of PBWCH signals and predetermined sequence, just on the target location, send based on the predetermined sequence life got
Into PBWCH signals so that terminal detects PBWCH signals, and the parameter of PBWCH signals detected is obtained, default right
Answer and bandwidth information corresponding with the PBWCH signals is obtained in relation table.How terminal specifically detects the PBWCH signals, Ke Yican
According to the mode in embodiment one to embodiment six, will not be repeated here.
According to the method for the acquisition bandwidth information of the present embodiment, by sending PBWCH signals corresponding with bandwidth information, make
Terminal is obtained by detecting its target location of PBWCH signal acquisitions and corresponding predetermined sequence, and in default mapping table
By inquire about the PBWCH signals target location and predetermined sequence obtain corresponding to system bandwidth information, due to PBWCH signals
It is one of L predetermined sequence, it is transmitted on one of K predeterminated position, and detection performance is good, it is possible to prevente effectively from existing
Because the PBCH of different districts produces stronger interference so that terminal is difficult to the bandwidth information of acquisition system between each other in technology
The problem of, realize the reliable reception of the bandwidth information of system.
Alternatively, in the present embodiment, obtain bandwidth device can also in PDCCH corresponding to the bandwidth information in system or
The information of at least one of following system is sent on the PDSCH that EPDCCH channels are specified：PHICH configuration informations, SFN information, so that
After terminal obtains the bandwidth information of system, PDCCH channels or EPDCCH channels are detected in the bandwidth of system, and refer in PDCCH
The information of system is obtained on fixed PDSCH or on the PDSCH that EPDCCH is specified.
So, the information of former PBCH channel bearings is divided into two parts by the device for obtaining bandwidth, and a part is bandwidth information,
Another part is other information in addition to bandwidth information, such as PHICH configuration informations and SFN information.Bandwidth information is existed
Individually sent on PBWCH channels, the other information in addition to bandwidth information is sent on the PDSCH channels that PDCCH is specified
Or sent on the PDSCH channels that EPDCCH is specified so that the other information in addition to bandwidth information can be complete in system
Scheduled transmission in bandwidth, so it is more efficient avoid in the prior art due to different districts PBCH between each other produce it is stronger
The problem of interference causes terminal to be difficult to correctly search PBCH channels, it more ensure that the reliable reception of PBCH carrying information.
Embodiment eight
The present embodiment provides a kind of device for obtaining bandwidth information, and it is used for the acquisition bandwidth information for performing embodiment seven
Method.
As shown in Figure 7 A, it is structural representation according to the device of the acquisition bandwidth information of the present embodiment.The acquisition bandwidth
The device of information includes：Second acquisition module 701 and the first sending module 702.
Wherein, the second acquisition module 701 is used for the bandwidth information according to system, believes in default bandwidth information and PBWCH
Number parameter mapping table in obtain PBWCH signals parameter；First sending module 702 is used to use the second acquisition module
The parameter of the 702 PBWCH signals got sends PBWCH signals, so that terminal after the synchronizing signal of system is detected, detects
PBWCH signals, obtain PBWCH signals parameter, and according to the parameter of PBWCH signals search systemic presupposition bandwidth information with
The mapping table of the parameter of PBWCH signals, the bandwidth information of system is obtained, the wherein parameter of PBWCH signals is believed including PBWCH
Number target location and predetermined sequence, target location be one in K predeterminated position, predetermined sequence is in L predetermined sequence
One, K and L are the integer more than or equal to 1.
The concrete operation method of the device of the acquisition bandwidth information causes with the embodiment July 1st, will not be repeated here.
According to the device of the acquisition bandwidth information of the present embodiment, by sending PBWCH signals corresponding with bandwidth information, make
Terminal is obtained by detecting its target location of PBWCH signal acquisitions and corresponding predetermined sequence, and in default mapping table
By inquire about the PBWCH signals target location and predetermined sequence obtain corresponding to system bandwidth information, due to PBWCH signals
It is one of L predetermined sequence, it is transmitted on one of K predeterminated position, and detection performance is good, it is possible to prevente effectively from existing
Because the PBCH of different districts produces stronger interference so that terminal is difficult to the bandwidth information of acquisition system between each other in technology
The problem of, realize the reliable reception of the bandwidth information of system.
Alternatively, as shown in Figure 7 B, the device of the acquisition bandwidth information of the present embodiment also includes the second sending module 703,
Sent on the PDSCH that second sending module 703 is specified for PDCCH or EPDCCH channels corresponding to the bandwidth information in system
The information of at least one system below：PHICH configuration informations, SFN information, so that after terminal obtains the bandwidth information of system,
PDCCH or EPDCCH channels are detected in the bandwidth of system, and the letter of system is obtained on the PDSCH that PDCCH or EPDCCH are specified
Breath.
Embodiment nine
The present embodiment provides another device for obtaining bandwidth information, for performing the acquisition bandwidth information of embodiment seven
Method.
As shown in figure 8, the structural representation of the device for the acquisition bandwidth information according to the present embodiment.The acquisition bandwidth is believed
The device 800 of breath includes at least one second processor 801, the second communication bus 802, second memory 803 and at least one
Individual second communication interface 804.
Wherein, the second communication bus 802 is used to realize connection and the communication between said modules, the second communication interface 804
For being connected and communicating with the network equipment.The bus can be isa bus or eisa bus etc..Bus can be one or more
Physical circuit, address bus, data/address bus, controlling bus etc. can be divided into when being a plurality of physical circuit.
Wherein, second memory 803 is used to store executable program code, wherein, second processor 801 is by reading the
The executable program code stored in two memories 803 runs program corresponding with executable program code, for：
According to the bandwidth information of system, in default bandwidth information with being obtained in the mapping table of the parameter of PBWCH signals
Take the parameter of PBWCH signals；
PBWCH signals are sent using the parameter of the PBWCH signals got, so that synchronization letter of the terminal in the system that detects
After number, PBWCH signals are detected, obtain the parameter of PBWCH signals, and the band of systemic presupposition is searched according to the parameter of PBWCH signals
The mapping table of wide information and the parameter of PBWCH signals, obtains the parameter bag of the bandwidth information of system, wherein PBWCH signals
Target location and the predetermined sequence of PBWCH signals are included, target location is one in K predeterminated position, and predetermined sequence is L pre-
If one in sequence, K and L are the integer more than or equal to 1.
Alternatively, second processor 801 is run by reading the executable program code stored in second memory 803
Program corresponding with executable program code, can be also used for：
Sent on the PDSCH that PDCCH or EPDCCH channels corresponding to bandwidth information in system are specified at least one of following
The information of system：PHICH configuration informations, SFN information, so that after terminal obtains the bandwidth information of system, in the bandwidth of system
PDCCH or EPDCCH channels are detected, and are on the PDSCH channels that PDCCH is specified or on the PDSCH that EPDCCH is specified
The information of system.
According to the device 800 of the acquisition bandwidth information of the present embodiment, believed by sending PBWCH corresponding with bandwidth information
Number so that terminal is by detecting its target location of PBWCH signal acquisitions and corresponding predetermined sequence, and in default corresponding relation
In table by inquire about the PBWCH signals target location and predetermined sequence obtain corresponding to system bandwidth information, due to PBWCH
Signal is one of L predetermined sequence, and it is transmitted on one of K predeterminated position, and detection performance is good, it is possible to prevente effectively from
In the prior art because the PBCH of different districts produces stronger interference so that terminal is difficult to the bandwidth of acquisition system between each other
The problem of information, realize the reliable reception of the bandwidth information of system.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program
Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
Finally it should be noted that：Above example is only to illustrate the technical scheme of the embodiment of the present invention, rather than it is limited
System；Although the present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：Its
The technical scheme described in foregoing embodiments can still be modified, or which part technical characteristic is equal
Replace；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technical scheme
Scope.
Claims (8)
- A kind of 1. method for obtaining bandwidth information, it is characterised in that including：After terminal detects the synchronizing signal of system, physics bandwidth channel PBWCH signals are detected, the PBWCH signals are in mesh Cursor position is sent, and the PBWCH signals are one in L predetermined sequence, and the target location is in K predeterminated position One, K and L are the integer more than or equal to 1, and the K predeterminated position is except master sync signal PSS and auxiliary synchronous signals One or more of position where each OFDM symbol outside orthogonal frequency division multiplex OFDM symbol shared by SSS；The parameter of the PBWCH signals is obtained, and the bandwidth letter of the systemic presupposition is searched according to the parameter of the PBWCH signals Breath and the mapping table of the parameter of the PBWCH signals, obtain the bandwidth information of the system, wherein the PBWCH signals Parameter including the PBWCH signals the target location and predetermined sequence；Wherein, detection PBWCH signals include：On each predeterminated position in the K predeterminated position, the sequence signal received using the predeterminated position is distinguished Related operation is carried out with the L predetermined sequence, obtains L correlation；One that maximum absolute value is chosen from the K × L correlation obtained on the K predeterminated position, if this is absolute Value is more than or equal to predetermined threshold value, then judges to successfully be detected the PBWCH signals, and the target position of the PBWCH signals Position corresponding to the correlation of the maximum absolute value is set to, the predetermined sequence of the PBWCH signals is the phase of the maximum absolute value Sequence corresponding to the value of pass.
- 2. the method according to claim 1 for obtaining bandwidth information, it is characterised in that in the bandwidth letter for obtaining system After breath, in addition to：Physical downlink control channel PDCCH or enhanced Physical Downlink Control Channel EPDCCH are detected in the bandwidth of the system Channel, and at least one of following system is obtained on the Physical Downlink Shared Channel PDSCH that the PDCCH or EPDCCH are specified The information of system：Physical hybrid automatic repeat request indicator channel PHICH configuration informations, system frame number SFN information.
- A kind of 3. device for obtaining bandwidth information, it is characterised in that including：Detection module, after synchronizing signal for detecting system when terminal, PBWCH signals are detected, the PBWCH signals are in mesh Cursor position is sent, and the PBWCH signals are one in L predetermined sequence, and the target location is in K predeterminated position One, K and L are the integer more than or equal to 1, and the K predeterminated position is except master sync signal PSS and auxiliary synchronous signals One or more of position where each OFDM symbol outside orthogonal frequency division multiplex OFDM symbol shared by SSS；Searching modul, the system is searched for obtaining the parameter of the PBWCH signals, and according to the parameter of the PBWCH signals The mapping table of default bandwidth information of uniting and the parameter of the PBWCH signals, obtains the bandwidth information of the system, wherein The parameter of the PBWCH signals includes the target location and the predetermined sequence of the PBWCH signals；Wherein, the detection module is specifically used for：After terminal detects the synchronizing signal of system, on each predeterminated position in the K predeterminated position, using this The sequence signal that predeterminated position receives carries out related operation with the L predetermined sequence respectively, obtains L correlation；One that maximum absolute value is chosen from the K × L correlation obtained on the K predeterminated position, if this is absolute Value is more than or equal to predetermined threshold value, then judges to successfully be detected the PBWCH signals, and the position of the PBWCH signals is Position corresponding to the correlation of the maximum absolute value, the predetermined sequence of the PBWCH signals are the correlation of the maximum absolute value Corresponding sequence.
- 4. the device according to claim 3 for obtaining bandwidth information, it is characterised in that also include：First acquisition module, for after the bandwidth information of system is obtained, detected in the bandwidth of the system PDCCH or EPDCCH channels, and obtain on the PDSCH that the PDCCH or EPDCCH are specified the information of at least one of following described system： Physical hybrid automatic repeat request indicator channel PHICH configuration informations, system frame number SFN information.
- A kind of 5. method for obtaining bandwidth information, it is characterised in that including：According to the bandwidth information of system, obtained in mapping table of the default bandwidth information with the parameter of PBWCH signals Take the parameter of the PBWCH signals；The PBWCH signals are sent using the parameter of the PBWCH signals got, wherein the parameter of the PBWCH signals Target location and predetermined sequence including the PBWCH signals, the target location is one in K predeterminated position, described Predetermined sequence is one in L predetermined sequence, and K and L are the integer more than or equal to 1, the K predeterminated position be except Where each OFDM symbol outside orthogonal frequency division multiplex OFDM symbol shared by master sync signal PSS and auxiliary synchronous signals SSS One or more of position.
- 6. the method according to claim 5 for obtaining bandwidth information, it is characterised in that also include：Sent on the PDSCH that PDCCH or EPDCCH channels corresponding to bandwidth information in the system are specified at least one of following The information of the system：Physical hybrid automatic repeat request indicator channel PHICH configuration informations, system frame number SFN information.
- A kind of 7. device for obtaining bandwidth information, it is characterised in that including：Second acquisition module, for the bandwidth information according to system, in the default bandwidth information and the parameter of PBWCH signals Mapping table in obtain the parameters of the PBWCH signals；First sending module, for sending the PBWCH signals, wherein institute using the parameter of the PBWCH signals got Stating the parameter of PBWCH signals includes target location and the predetermined sequence of the PBWCH signals, and the target location is K default One in position, the predetermined sequence is one in L predetermined sequence, and K and L are the integer more than or equal to 1, described K predeterminated position is in addition to the orthogonal frequency division multiplex OFDM symbol shared by master sync signal PSS and auxiliary synchronous signals SSS Each OFDM symbol where one or more of position.
- 8. the device according to claim 7 for obtaining bandwidth information, it is characterised in that also include：Second sending module, the PDSCH specified for PDCCH or EPDCCH channels corresponding to the bandwidth information in the system Send the information of at least one of following system：Physical hybrid automatic repeat request indicator channel PHICH configuration informations, system Frame number SFN information.
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| CN201210562411.0A CN103888962B (en) | 2012-12-21 | 2012-12-21 | The method and apparatus for obtaining bandwidth information |
| PCT/CN2013/090229 WO2014094662A1 (en) | 2012-12-21 | 2013-12-23 | Method and device for obtaining bandwidth information device |
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| CN106559206B (en) * | 2015-09-30 | 2019-04-23 | 中兴通讯股份有限公司 | The transmission method and device of synchronization signal |
| CN107347213A (en) * | 2016-05-05 | 2017-11-14 | 中兴通讯股份有限公司 | A kind of downlink system bandwidth indicating means, base station and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101494637A (en) * | 2008-01-24 | 2009-07-29 | 中兴通讯股份有限公司 | Terminal access method and frame structure for WiMAX evolution system |
| CN101777950A (en) * | 2010-01-20 | 2010-07-14 | 上海华为技术有限公司 | Method for obtaining bandwidth of base station as well as method, device and system for transmitting leader sequence |
| CN101783712A (en) * | 2009-01-19 | 2010-07-21 | 华为技术有限公司 | Method, user terminal and network node for identifying LTE (Long Term Evolution) version |
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| ES2624152T3 (en) * | 2004-05-01 | 2017-07-13 | Callahan Cellular L.L.C. | Methods and apparatus for multi-carrier communications with variable channel bandwidth |
| CN101370246B (en) * | 2007-08-14 | 2011-07-20 | 电信科学技术研究院 | Broadcasting method, system and apparatus for system information |
| CN101483626B (en) * | 2008-01-09 | 2012-11-28 | 中兴通讯股份有限公司 | Sending, receiving, and transmitting method for preamble sequence |
| CN101932075A (en) * | 2009-06-24 | 2010-12-29 | 华为技术有限公司 | Information transmission method, information acquisition method and device |
| WO2011043341A1 (en) * | 2009-10-05 | 2011-04-14 | 住友電気工業株式会社 | Base station apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101494637A (en) * | 2008-01-24 | 2009-07-29 | 中兴通讯股份有限公司 | Terminal access method and frame structure for WiMAX evolution system |
| CN101783712A (en) * | 2009-01-19 | 2010-07-21 | 华为技术有限公司 | Method, user terminal and network node for identifying LTE (Long Term Evolution) version |
| CN101777950A (en) * | 2010-01-20 | 2010-07-14 | 上海华为技术有限公司 | Method for obtaining bandwidth of base station as well as method, device and system for transmitting leader sequence |
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