CN103546243B - Determine the method and apparatus of data to decode corresponding to RACH message, base station - Google Patents
Determine the method and apparatus of data to decode corresponding to RACH message, base station Download PDFInfo
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- CN103546243B CN103546243B CN201310516159.4A CN201310516159A CN103546243B CN 103546243 B CN103546243 B CN 103546243B CN 201310516159 A CN201310516159 A CN 201310516159A CN 103546243 B CN103546243 B CN 103546243B
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Abstract
The present embodiments relate to communication technical field, particularly to the method and apparatus determining data to decode corresponding to RACH message, can guarantee that in order to provide RACH message is received that pretreatment accuracy is higher, can guarantee that wait is received, to RACH message, the method and apparatus that pretreatment operation duration is less again.The data to decode method that the determination RACH message of the embodiment of the present invention is corresponding includes: according to time slot, RACH message is divided into multiple subsegment；For each subsegment in addition to first subsegment and last subsegment, path position according to a upper subsegment is received pretreatment to current subsegment and obtains data to decode, within the same time period, determine the path position of current subsegment according to current subsegment and corresponding local sequence；Data to decode according to each subsegment determines the data to decode of RACH message.
Description
Technical field
The present invention relates to communication technical field, particularly to a kind of number to be decoded determining that RACH message is corresponding
According to method and apparatus and base station.
Background technology
WCDMA(WCDMA, Wideband Code Division Multiple Access) standard
It is a kind of standard in 3 G system, in a wcdma system, RACH(Random Access
Channel, RACH) there is very important effect, it is leading that it is mainly used in transmitting RACH
With RACH message, wherein, leading scrambler sequence and the signature sequence of including of RACH, RACH message
A length of 10ms(millisecond) or 20ms, when a length of 10ms, the RACH message bag of RACH message
Containing frame data, when a length of 20ms, the RACH message of RACH message comprises two frame data, RACH
Every frame data that message comprises include that 15 time slots, each described time slot comprise control information and data message.
Below as a example by Fig. 1, RACH transmission leading and RACH message the process of RACH is situated between
Continue, as it is shown in figure 1, RACH transmission leading and RACH message the process of RACH comprises the steps:
Step A1, UE(terminal) find effective RACH, and the RACH passing through to find is according to just
Beginning performance number is to NodeB(base station) RACH is leading in transmission, and instruction NodeB is detecting from UE
RACH leading time, to UE send AICH(capture instruction)；
The RACH that step A2, NodeB are not detected by from UE is leading, does not sends AICH to UE,
UE do not receive within the setting time from NodeB for leading for RACH described AICH, UE according to
Set step-length increase transmission power level, in the effective access slot of the next one, by described RACH to
It is leading that NodeB resends RACH；
Wherein, in step A2, if NodeB detects that the RACH from UE is leading, send out to UE
AICH, UE is sent to receive within the setting time from NodeB for described AICH leading for RACH,
Then UE can directly by described RACH to NodeB send RACH message, instruction NodeB to from
The RACH message of UE is received processing.
Wherein, in step A2, if NodeB is leading due to the RACH being not detected by from UE always,
Do not send AICH to UE, then UE circulation performs step A2.
Step A3, NodeB detect that the RACH from UE is leading, and send for RACH to UE
Leading AICH；
Step A4, UE received from NodeB for described AICH leading for RACH within the setting time,
UE sends RACH message by described RACH to NodeB, and NodeB is to the RACH from UE in instruction
Message is received processing.
The reception that at present the RACH message from UE is carried out by NodeB process include receiving pretreatment and
Decoding processes, and first, the RACH message from UE is received pretreatment, to obtain described RACH
The data to decode that message is corresponding, then, carries out decoding process to the described data to decode obtained.
Wherein, described RACH message, according to multi-path location corresponding to RACH message, is carried out by NodeB
Receive pretreatment, thus the accuracy of the multi-path location determined determines to a certain extent to from UE
RACH message be received the accuracy of pretreatment.
At present, NodeB determines that the method for multi-path location corresponding to the RACH message received includes as follows
Two kinds:
The local sequence of the RACH leading correspondence of leading and described RACH that method one, basis detect,
Determine the multi-path location that described RACH message is corresponding, including:
The local sequence of the RACH leading correspondence of leading and described RACH that step B1, basis detect,
Determine the multi-path location of the leading correspondence of described RACH, wherein, the local sequence of the leading correspondence of described RACH
It is classified as that NodeB storage has and the described leading sequence carried of RACH, i.e. described RACH is leading
Signature sequence；
Step B2, by the multi-path location of leading for described RACH correspondence, corresponding as described RACH message
Multi-path location.
Method two, according to the RACH message that the detects local sequence corresponding with described RACH message,
Determine the multi-path location that described RACH message is corresponding, wherein, the local sequence that described RACH message is corresponding
It is classified as the pilot tone sequence that in that NodeB storage has and described RACH message, the control information of each time slot comprises
Row.
Owing to the length that RACH is leading only has 2ms(millisecond), at the multipath determining the leading correspondence of RACH
During position, it is insufficiently resistant to effect of noise, thus the described RACH message pair determined according to method one
Except maximum diameter position in the multi-path location answered, other path positions are that the likelihood ratio in false footpath is relatively big, thus right
When RACH message is received pretreatment, cause the accuracy receiving pretreatment the highest so that erroneous interpretations
Probability bigger.
Owing to method two needs, according to the RACH message detected, to determine that described RACH message is corresponding
Multi-path location, thus NodeB is after RACH message being detected, needs first according to the RACH detected
Message, carries out Multipath searching, determines the multi-path location that described RACH message is corresponding, then could be according to really
The multi-path location that fixed described RACH message is corresponding, is received pretreatment to described RACH message,
Thus largely add NodeB and wait the duration that RACH message is received pretreatment operation.
In sum, prior art does not also have one both can guarantee that and RACH message is received pretreatment
Accuracy higher, can guarantee that and wait that the duration that RACH message is received pretreatment operation is less again
Method.
Summary of the invention
A kind of method determining data to decode corresponding to RACH message that the embodiment of the present invention provides and dress
Put and base station, in order to provide a kind of both having can guarantee that RACH message is received the accuracy of pretreatment
Higher, can guarantee that and wait RACH message is received the less method of the duration of pretreatment operation and dress again
Put.
First aspect, the embodiment of the present invention provides a kind of side determining data to decode corresponding to RACH message
Method, including:
The RACH message received is divided into multiple subsegment according to time slot, and determines except last subsegment
The local sequence that each subsegment in addition is corresponding；
For first subsegment being divided into by described RACH message, according to predetermined path position, right
First subsegment is received pretreatment, obtains first data to decode corresponding to subsegment；In the same time
In section, according to the local sequence that first subsegment is corresponding with first subsegment, determine that first subsegment is corresponding
Path position；
For each subsegment in addition to first subsegment and last subsegment, according to a upper subsegment correspondence
Path position, current subsegment is received pretreatment, obtains the data to decode that current subsegment is corresponding；?
In the same time period, according to the local sequence that current subsegment is corresponding with current subsegment, determine that current subsegment is corresponding
Path position；
For last subsegment, according to the path position that a upper subsegment is corresponding, last subsegment is carried out
Receive pretreatment, obtain the data to decode that last subsegment is corresponding；
According to the data to decode that each subsegment being divided into by described RACH message is corresponding, determine described
The data to decode that RACH message is corresponding.
In embodiments of the present invention, the RACH message received is carried out segment processing, for except first
Each subsegment beyond subsegment, according to the path position that a upper subsegment is corresponding, is received pre-to current subsegment
Process, owing to the path position that a described upper subsegment is corresponding is corresponding with a upper subsegment according to a upper subsegment
Local sequence determine in real time, the accuracy of the path position that the most described upper subsegment is corresponding is higher, and
And the gap of the accuracy of path position corresponding to adjacent two subsegments of determining is little to ignoring, and therefore will
Path position corresponding to a upper subsegment, for the reception pretreatment of current subsegment, still can ensure that current son
The high accuracy receiving pretreatment of section.
In embodiments of the present invention, for first subsegment, according to predetermined path position, to first
Subsegment is received pretreatment, is therefore greatly reduced wait and first subsegment is received pretreatment operation
Duration, i.e. before first subsegment is received pretreatment operation time delay approximation can ignore；
For each subsegment in addition to first subsegment, according to the path position that a upper subsegment is corresponding, to working as
Front subsegment is received pretreatment, due to on subsegment be received same time period of pretreatment
In, just obtain the path position that a upper subsegment is corresponding, therefore when current subsegment is received pretreatment,
Directly according to the path position that the upper subsegment obtained is corresponding, current subsegment can be received pre-place
Reason, thus be greatly reduced wait and each subsegment in addition to first subsegment is received pretreatment operation
Duration, each subsegment in addition to first subsegment is received the time delay before pretreatment operation approximation can
To ignore.
It is preferred that the RACH message received is divided into multiple subsegment according to time slot, including:
Comprise the principle of integer time slot according to each subsegment being divided into, by described RACH message according to time
Gap is divided into multiple subsegment.
In embodiments of the present invention, it is provided that a kind of the RACH message received is divided into many according to time slot
The detailed description of the invention of individual subsegment, it should be noted that the concrete mode that the embodiment of the present invention provides is served only for
Explain the embodiment of the embodiment of the present invention, rather than limit the embodiment of the embodiment of the present invention.
It is preferred that determine described predetermined path position, including:
By the maximum diameter position in the multi-path location of leading for RACH correspondence, as position, described predetermined footpath
Put.
In embodiments of the present invention, due to the standard of the maximum diameter position in the multi-path location of the leading correspondence of RACH
Exactness is higher, thus by the maximum diameter position in the multi-path location of leading for RACH correspondence, as to first
Individual subsegment is received the described predetermined path position of pretreatment, it is ensured that carry out first subsegment
The accuracy receiving pretreatment is higher.
It is preferred that according to data to decode corresponding to each subsegment being divided into by RACH message, determine institute
State the data to decode that RACH message is corresponding, including:
Data to decode order corresponding for each subsegment described or backward are merged, obtains described RACH and disappear
The data to decode that breath is corresponding.
In embodiments of the present invention, it is provided that two kinds of each subsegments being divided into according to RACH message are corresponding
Data to decode determines the detailed description of the invention of data to decode corresponding to described RACH message.
Second aspect, the embodiment of the present invention provides a kind of dress determining data to decode corresponding to RACH message
Put, including:
Divide module, for the RACH message received is divided into multiple subsegment according to time slot, and determine
The local sequence that each subsegment in addition to last subsegment is corresponding；
Processing module, for for first subsegment being divided into by described RACH message, according to the most true
Fixed path position, is received pretreatment to first subsegment, obtains first number to be decoded corresponding to subsegment
According to；Within the same time period, according to the local sequence that first subsegment is corresponding with first subsegment, determine
The path position that one subsegment is corresponding；For each subsegment in addition to first subsegment and last subsegment,
According to the path position that a upper subsegment is corresponding, current subsegment is received pretreatment, obtains current subsegment pair
The data to decode answered；Within the same time period, according to the local sequence that current subsegment is corresponding with current subsegment,
Determine the path position that current subsegment is corresponding；For last subsegment, according to the position, footpath that a upper subsegment is corresponding
Put, last subsegment is received pretreatment, obtain the data to decode that last subsegment is corresponding；
Determine module, for the to be decoded number corresponding according to each subsegment being divided into by described RACH message
According to, determine the data to decode that described RACH message is corresponding.
In embodiments of the present invention, determine that the device of data to decode corresponding to RACH message will receive
RACH message carries out segment processing, for each subsegment in addition to first subsegment, according to a upper son
The path position that section is corresponding, is received pretreatment to current subsegment, it is ensured that the reception to current subsegment is pre-
The high accuracy processed.
In embodiments of the present invention, for first subsegment, the data to decode that RACH message is corresponding is determined
Device according to predetermined path position, first subsegment is received pretreatment, is therefore substantially reduced
Wait the duration that first subsegment is received pretreatment operation, first subsegment be received pre-place
Manage preoperative time delay approximation can ignore；
For each subsegment in addition to first subsegment, determine data to decode corresponding to RACH message
Device, according to path position corresponding to a upper subsegment, is received pretreatment to current subsegment, is greatly reduced
Wait the duration that each subsegment in addition to first subsegment is received pretreatment operation, to except first
Time delay approximation before each subsegment beyond subsegment is received pretreatment operation can be ignored.
It is preferred that described division module, specifically for comprising integer time slot according to each subsegment being divided into
Principle, described RACH message is divided into multiple subsegment according to time slot.
In embodiments of the present invention, it is provided that determine that the device of data to decode corresponding to RACH message will connect
The RACH message received is divided into the detailed description of the invention of multiple subsegment according to time slot, it should be noted that
The concrete mode that the embodiment of the present invention provides is served only for explaining the embodiment of the embodiment of the present invention, rather than
Limit the embodiment of the embodiment of the present invention.
It is preferred that described processing module, specifically for by the maximum in the multi-path location of leading for RACH correspondence
Path position, as described predetermined path position.
In embodiments of the present invention, due to the standard of the maximum diameter position in the multi-path location of the leading correspondence of RACH
Exactness is higher, thus determines that the device of data to decode corresponding to RACH message is by leading for RACH right
Maximum diameter position in the multi-path location answered, as being received first subsegment described in pretreatment in advance
The path position determined, it is ensured that the accuracy that first subsegment is received pretreatment is higher.
Module is determined, specifically for by data to decode order corresponding for each subsegment described it is preferred that described
Or backward merges, and obtains the data to decode that described RACH message is corresponding.
In embodiments of the present invention, it is provided that determine the device of data to decode corresponding to RACH message according to
Data to decode corresponding to each subsegment that RACH message is divided into determines that described RACH message is corresponding
Two kinds of detailed description of the invention of data to decode.
The third aspect, the embodiment of the present invention provides a kind of base station, including determination RACH message described above
The device of corresponding data to decode.
In embodiments of the present invention, owing to for each subsegment in addition to first subsegment, determining RACH
The device of the data to decode that message is corresponding can ensure that the relatively high precision that current subsegment receives pretreatment
Degree, therefore includes that the base station of the device of data to decode corresponding to described determination RACH message can also be protected
Card receives the high accuracy of pretreatment to current subsegment.
In embodiments of the present invention, owing to determining that the device of data to decode corresponding to RACH message can be protected
Card is substantially reduced and waits the duration that each subsegment is received pretreatment operation, therefore includes described determination
The base station of the device of the data to decode that RACH message is corresponding is it is also ensured that be substantially reduced wait to each
Subsegment is received the duration of pretreatment operation.
Compared with prior art, in embodiments of the present invention, the RACH message received is carried out at segmentation
Reason, for each subsegment in addition to first subsegment, according to the path position that a upper subsegment is corresponding, to working as
Front subsegment is received pretreatment, and the path position corresponding due to a upper subsegment determines in real time, therefore goes up
The accuracy of the path position that one subsegment is corresponding is higher, and since it is determined that adjacent two subsegments corresponding
The gap of the accuracy of path position is little to ignoring, and is therefore used for path position corresponding for a upper subsegment working as
The reception pretreatment of front subsegment, it is ensured that current subsegment is received the high accuracy of pretreatment.
Compared with prior art, in embodiments of the present invention, the RACH message received is carried out at segmentation
Reason；For first subsegment, according to predetermined path position, first subsegment is received pretreatment,
Therefore it is greatly reduced and waits the duration that first subsegment is received pretreatment operation；For except first
Each subsegment beyond subsegment, due to on subsegment be received pretreatment the same time period in,
Just obtain the path position that a upper subsegment is corresponding, therefore when current subsegment is received pretreatment, permissible
Directly according to the path position that the upper subsegment obtained is corresponding, current subsegment is received pretreatment,
Thus be greatly reduced wait and each subsegment in addition to first subsegment is received pretreatment operation
Duration.
Accompanying drawing explanation
Fig. 1 is by the RACH leading mistake with RACH message of transmission RACH in background of invention
Journey schematic diagram；
Fig. 2 is the method flow signal determining data to decode corresponding to RACH message in the embodiment of the present invention
Figure；
Fig. 3 is the complete method flow process signal being received RACH message in the embodiment of the present invention processing
Figure；
Fig. 4 is that the structure of the device determining data to decode corresponding to RACH message in the embodiment of the present invention is shown
It is intended to.
Detailed description of the invention
In embodiments of the present invention, the RACH message received is carried out segment processing, for except first
Each subsegment beyond subsegment, according to the path position that a upper subsegment is corresponding, is received pre-to current subsegment
Process, it is ensured that current subsegment is received the high accuracy of pretreatment.
In embodiments of the present invention, the RACH message received is carried out segment processing, for first son
Section, according to predetermined path position, is received pretreatment to first subsegment, is therefore greatly reduced
Wait the duration that first subsegment is received pretreatment operation；For each in addition to first subsegment
Subsegment, when current subsegment is received pretreatment, can be directly according to the upper subsegment obtained
Corresponding path position, is received pretreatment, thus is greatly reduced wait to except first current subsegment
Each subsegment beyond subsegment is received the duration of pretreatment operation.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
It should be noted that in embodiments of the present invention, for be divided into by the RACH message received
Each subsegment in multiple subsegments, local sequence corresponding to this subsegment is that NodeB storage has and this subsegment
In the pilot frequency sequence that comprises of the control information of each time slot.
As in figure 2 it is shown, the method that the embodiment of the present invention determines data to decode corresponding to RACH message includes
The following step:
Step 201, the RACH message received is divided into multiple subsegment according to time slot, and determines except
The local sequence that each subsegment beyond later subsegment is corresponding；
Step 202, for first subsegment being divided into by described RACH message, according to predetermined
Path position, is received pretreatment to first subsegment, obtains first data to decode corresponding to subsegment；
Within the same time period, according to the local sequence that first subsegment is corresponding with first subsegment, determine first
The path position that subsegment is corresponding；
For each subsegment in addition to first subsegment and last subsegment, according to a upper subsegment correspondence
Path position, current subsegment is received pretreatment, obtains the data to decode that current subsegment is corresponding；?
In the same time period, according to the local sequence that current subsegment is corresponding with current subsegment, determine that current subsegment is corresponding
Path position；
For last subsegment, according to the path position that a upper subsegment is corresponding, last subsegment is carried out
Receive pretreatment, obtain the data to decode that last subsegment is corresponding；
Step 203, according to data to decode corresponding to each subsegment of being divided into by described RACH message,
Determine the data to decode that described RACH message is corresponding.
In enforcement, the RACH message received is carried out segment processing, in addition to first subsegment
Each subsegment, according to the path position that a upper subsegment is corresponding, is received pretreatment to current subsegment, due to
Path position corresponding to a upper subsegment determines in real time, therefore goes up the accurate of a path position corresponding to subsegment
Spend higher, and since it is determined that the gap of accuracy of path position corresponding to adjacent two subsegments little to can
To ignore, therefore path position corresponding for a upper subsegment is used for the reception pretreatment of current subsegment, Ke Yibao
Card receives the high accuracy of pretreatment to current subsegment.
In enforcement, the RACH message received is carried out segment processing,
For first subsegment, according to predetermined path position, first subsegment is received pretreatment,
Therefore it is greatly reduced and waits the duration that first subsegment is received pretreatment operation；
For each subsegment in addition to first subsegment, due to on a subsegment be received pretreatment
The same time period in, just obtain the path position that a upper subsegment is corresponding, therefore current subsegment connect
When receiving pretreatment, can be directly according to the path position that the upper subsegment obtained is corresponding, to current subsegment
It is received pretreatment, thus is greatly reduced wait and each subsegment in addition to first subsegment is connect
Receive the duration of pretreatment operation.
It is preferred that in step 201, any one dividing mode can be used, by RACH message according to
Time slot is divided into multiple subsegment, i.e. the timeslot number that the multiple subsegments being divided into by described RACH message comprise
Can part identical, the most identical or entirely differ, such as, disappear for the RACH comprising frame data
Breath, can be divided into 3 subsegments, and the most each subsegment comprises 5 time slots.
It is preferred that in step 201, the RACH message received is divided into multiple subsegment according to time slot,
Including:
Comprise the principle of integer time slot according to each subsegment being divided into, by described RACH message according to time
Gap is divided into multiple subsegment.
In enforcement, comprise the principle of integer time slot according to each subsegment being divided into, described RACH is disappeared
Breath is divided into multiple subsegment according to time slot, can reduce the complexity determining local sequence corresponding to each subsegment
Degree, conveniently determines the local sequence that each subsegment is corresponding.
It is preferred that owing to the local sequence that RACH message is corresponding is the control of each time slot in RACH message
The pilot frequency sequence that information processed comprises, and the executive agent storage of the embodiment of the present invention has RACH message corresponding
Local sequence, therefore, in step 201, the executive agent of the embodiment of the present invention is determining that RACH disappears
After the segmented mode of breath, it is possible to the time slot comprised according to each subsegment being divided into easily, determine institute
State the local sequence that each subsegment is corresponding.
In being embodied as, in step 202., determine that the mode of described predetermined path position has multiple,
Such as, as required or experience set.
It is preferred that in step 202., determine described predetermined path position, including:
By the maximum diameter position in the multi-path location of leading for RACH correspondence, as position, described predetermined footpath
Put.
In enforcement, the accuracy of the maximum diameter position in the multi-path location of the leading correspondence of RACH is higher, because of
And by the maximum diameter position in the multi-path location of leading for RACH correspondence, be received as to first subsegment
The described predetermined path position of pretreatment, it is ensured that first subsegment is received the standard of pretreatment
Exactness is higher.
It is preferred that in step 202., according to the path position that a upper subsegment is corresponding, current subsegment is carried out
Receive pretreatment, obtain embodiment and the basis in prior art of data to decode corresponding to current subsegment
The path position that RACH message is corresponding, is received pretreatment to RACH message, obtains RACH message
The embodiment of corresponding data to decode is similar to.
It is preferred that in step 202., according to the path position that a upper subsegment is corresponding, current subsegment is carried out
Receive pretreatment, obtain the data to decode that current subsegment is corresponding, including:
Step A1, for each path position in path position corresponding to a upper subsegment, respectively according to described
Path position, carries out descrambling and de-spreading process to current subsegment, obtains the data message that current subsegment comprises；
Step A2, respectively the data message that each path position obtained is corresponding is carried out channel estimation；
Step A3, channel estimation results according to data message corresponding to each path position, respectively to described
The data message that each path position is corresponding carries out equilibrium treatment；
Step A4, the data message that each path position after equilibrium treatment is corresponding is carried out multi-path combing, with
Obtain the data to decode that current subsegment is corresponding.
It is preferred that in step 202., according to predetermined path position, first subsegment is received
Pretreatment, the embodiment obtaining first data to decode corresponding to subsegment is corresponding with according to a upper subsegment
Path position, current subsegment is received pretreatment, obtains the reality of data to decode corresponding to current subsegment
Mode of executing is similar to, and does not repeats them here.
It is preferred that in step 202., according to the path position that a upper subsegment is corresponding, to last subsegment
It is received pretreatment, obtains the embodiment of data to decode corresponding to last subsegment and according to upper one
The path position that individual subsegment is corresponding, is received pretreatment to current subsegment, obtain current subsegment corresponding wait translate
The embodiment of code data is similar to, and does not repeats them here.
It is preferred that in step 202., according to the local sequence that current subsegment is corresponding with current subsegment, determine
The embodiment of the path position that current subsegment is corresponding disappears according to RACH message and RACH in prior art
The local sequence that breath is corresponding, determines that the embodiment of path position corresponding to RACH message is similar to.
It is preferred that in step 202., according to the local sequence that current subsegment is corresponding with current subsegment, determine
The path position that current subsegment is corresponding, including:
Step B1, according to the current subsegment local sequence corresponding with current subsegment, determine that current subsegment is corresponding
PDP(power delay matrix, power delay profile)；
Step B2, according to PDP corresponding to the current subsegment determined, determine the path position that current subsegment is corresponding.
It is preferred that in step bl is determined., according to the local sequence that current subsegment is corresponding with current subsegment, determine
The PDP that current subsegment is corresponding, including:
According to the local sequence that current subsegment is corresponding with current subsegment, determine candidate PDP, determine described
Candidate PDP, as the PDP that current subsegment is corresponding；Or
According to the local sequence that current subsegment is corresponding with current subsegment, determine candidate PDP, by candidate PDP
It is filtered processing with default PDP, obtains the PDP that current subsegment is corresponding.
In enforcement, by being filtered processing by candidate PDP and default PDP, obtain current subsegment corresponding
PDP, it is ensured that according to the PDP that current subsegment is corresponding, the path position that the current subsegment determined is corresponding
Stability and accuracy.
It is preferred that according to the current subsegment local sequence corresponding with current subsegment, determine candidate PDP, including:
Carry out the local sequence that current subsegment is corresponding scrambling spread processing, obtain data segment M；
Utilizing data segment M that current subsegment carries out slip relevant, wherein, sliding length is search window length L；
To slide relevant after the data that obtain carry out coherent accumulation by time slot, obtain the matrix of L*n, wherein,
N is the number of time slot of the data obtained after described slip is correlated with；
The matrix of L*n is carried out noncoherent accumulation, obtains the candidate PDP of a length of L.
It is preferred that preset PDP can as required or experience set.
It is preferred that presetting PDP is PDP corresponding to a upper subsegment.
It is preferred that be filtered processing by candidate PDP and default PDP, obtain the PDP that current subsegment is corresponding,
Including:
By IIR(infinite impulse response numeral) wave filter, candidate PDP is filtered with default PDP
Process, obtain the PDP that current subsegment is corresponding.
Wherein, after iir filter Filtering Processing, PDP corresponding to the current subsegment that obtains can basis
Following equation determines:
PDPn '=α*PDPn+(1-α)*PDPp... ... ... formula one
Wherein, PDPn' it is the corresponding PDP, PDP of current subsegmentnFor candidate PDP, PDPpFor default PDP,
α is constant.
It is preferred that α is 0.875,0.75,0.625 or 0.5 etc..
It is preferred that in step B2, according to the PDP that the current subsegment determined is corresponding, determine current subsegment
Corresponding path position, including:
Find the peak value of PDP corresponding to current subsegment, and using described peak value as a footpath；
By peak value and described peak value left and right each 1chip(chip of PDP corresponding for current subsegment) value of position
Zero setting；
Continue executing with above-mentioned searching peak value, using the described peak value that searches out as a footpath and the behaviour of zero setting
Make, until determining the path position setting number；
The value of the non-zero position of PDP is averaged, to determine noise power-value；
Described each path position is calculated with the value of each path position determined corresponding according to the noise power-value determined
Snr value；
Snr value corresponding for the described each path position determined is compared with snr threshold, by correspondence
Snr value, not less than the path position of snr threshold, is defined as the path position that current subsegment is corresponding.
It is preferred that the setting number of the path position determined can as required or experience set, such as, root
It is set as 4 or 6 according to experience.
It is preferred that in step 202., according to the local sequence that first subsegment is corresponding with first subsegment,
Determine the embodiment of path position corresponding to first subsegment with according to the current subsegment of current subsegment and current the most sub
The local sequence that Duan Dangqian subsegment is corresponding, determines that the embodiment of path position corresponding to current subsegment is similar to,
This repeats no more.
It should be noted that when determining PDP corresponding to first subsegment, presetting PDP is according to RACH
The PDP that leading and the leading correspondence of RACH local sequence determines, and the leading and RACH according to RACH
The local sequence of leading correspondence determines the embodiment of the PDP of the leading correspondence of RACH and according to current subsegment
The local sequence corresponding with current subsegment determines that the embodiment of PDP corresponding to current subsegment is similar, at this
Repeat no more.
It is preferred that in step 203, corresponding to be decoded of each subsegment of being divided into according to RACH message
Data, determine the data to decode that described RACH message is corresponding, including:
Data to decode order corresponding for each subsegment described or backward are merged, obtains described RACH and disappear
The data to decode that breath is corresponding.
It is preferred that after determining the data to decode that described RACH message is corresponding, also include:
The data to decode that the described RACH message determined is corresponding is carried out decoding process.
It should be noted that the executive agent of the embodiment of the present invention can be base station, it is also possible to be that other are new
Network side entity.
As it is shown on figure 3, RACH message is received the complete method processed, bag by the embodiment of the present invention
Include:
The local sequence of the RACH leading correspondence of leading and described RACH that step 301, basis receive,
Determine the multi-path location of the leading correspondence of PDP and described RACH of the leading correspondence of described RACH, by described
The PDP of the leading correspondence of RACH is labeled as PDPp；
Step 302, the RACH message of reception is divided into N number of subsegment according to time slot；
Such as, if the RACH message received comprises frame data, described RACH message can be divided into
Three subsegments, i.e. N=3.
Step 303, arranging segmented index n, 1≤n≤N and n is integer, makes n=1, for the n-th=1
Subsegment, according to the maximum diameter position in the multi-path location of described leading correspondence, is received the 1st subsegment
Pretreatment, obtains data to decode D1, within the same time period, according to the 1st subsegment and the 1st subsegment
Corresponding local sequence, determines the candidate PDP that the 1st subsegment is corresponding, is labeled as PDP1, to PDP1With
PDPpIt is filtered processing and obtains the 1st PDP that subsegment is corresponding, be labeled as PDP1', make PDPp=PDP1',
And according to PDP1', carry out Multipath searching, determine the 1st multi-path location that subsegment is corresponding；
In being embodied as, owing to frame data comprise 15 time slots, if RACH message comprises frame data
And N=3, then each subsegment being divided into comprises 5 time slots, and local sequence corresponding to the n-th subsegment is
The pilot frequency sequence that the control information of 5 time slots in that NodeB storage has and the n-th subsegment comprises, n can
Think 1,2 or 3.
Step 304, make n=n+1, if n >=N, then perform step 306, otherwise perform step 305；
Step 305, for the n-th subsegment, according to the path position that (n-1)th subsegment is corresponding, to n-th
Subsegment is received pretreatment, obtains data to decode Dn, within the same time period, according to the n-th subsegment
The local sequence corresponding with the n-th subsegment, determines the candidate PDP that the n-th subsegment is corresponding, is labeled as PDPn,
To PDPnAnd PDPpIt is filtered processing and obtains the PDP that the n-th subsegment is corresponding, be labeled as PDPn', order
PDPp=PDPn', and according to PDPn', carry out Multipath searching, determine the multi-path location that the n-th subsegment is corresponding；
Step 306, for the n-th subsegment, according to the path position that (n-1)th subsegment is corresponding, to n-th
Subsegment is received pretreatment, obtains data to decode Dn；
Step 307, N section data to decode is carried out order merge, obtain described RACH message corresponding
Data to decode D, i.e. D=[D1D2…DN-1DN]；
Step 308, the data to decode D that described RACH message is corresponding is carried out decoding process.
Based on same inventive concept, the embodiment of the present invention additionally provides and a kind of determines that RACH message is corresponding
The device of data to decode and base station, owing to determining device and the base of data to decode corresponding to RACH message
The principle of solution problem of standing is similar to the method for the embodiment of the present invention, it is thus determined that corresponding the treating of RACH message
The device of decoding data and the enforcement of base station may refer to the enforcement of method, repeat no more in place of repetition.
Fig. 4 is the structural representation that the embodiment of the present invention determines the device of data to decode corresponding to RACH message
Figure, as it can be seen, the device that the embodiment of the present invention determines data to decode corresponding to RACH message includes:
Divide module 401, for the RACH message received is divided into multiple subsegment according to time slot, and
Determine the local sequence that each subsegment in addition to last subsegment is corresponding；
Processing module 402, for for first subsegment being divided into by described RACH message, according in advance
The path position first determined, is received pretreatment to first subsegment, obtain first subsegment corresponding wait translate
Code data；Within the same time period, according to the local sequence that first subsegment is corresponding with first subsegment, really
The path position that fixed first subsegment is corresponding；For each height in addition to first subsegment and last subsegment
Section, according to the path position that a upper subsegment is corresponding, is received pretreatment to current subsegment, obtains current son
The data to decode that section is corresponding；Within the same time period, according to this locality that current subsegment is corresponding with current subsegment
Sequence, determines the path position that current subsegment is corresponding；For last subsegment, according to a upper subsegment correspondence
Path position, last subsegment is received pretreatment, obtains corresponding to be decoded of last subsegment
Data；
Determine module 403, translate for corresponding the waiting according to each subsegment of being divided into by described RACH message
Code data, determine the data to decode that described RACH message is corresponding.
It is preferred that described division module 401, specifically for comprising integer according to each subsegment being divided into
The principle of time slot, is divided into multiple subsegment by described RACH message according to time slot.
It is preferred that described processing module 402, specifically for by the multi-path location of leading for RACH correspondence
Maximum diameter position, as described predetermined path position.
Module 403 is determined, specifically for by data to decode corresponding for each subsegment described it is preferred that described
Order or backward merge, and obtain the data to decode that described RACH message is corresponding.
It is preferred that the base station of the embodiment of the present invention, including corresponding to be decoded of described determination RACH message
The device of data.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or knot
The form of the embodiment in terms of conjunction software and hardware.And, the present invention can use and wherein wrap one or more
Computer-usable storage medium containing computer usable program code (include but not limited to disk memory,
CD-ROM, optical memory etc.) form of the upper computer program implemented.
The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding
The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating
The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one
The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. the method determining data to decode corresponding to RACH RACH message, its feature
Being, the method includes:
The RACH message received is divided into multiple subsegment according to time slot, and determines except last subsegment
The local sequence that each subsegment in addition is corresponding；
For first subsegment being divided into by described RACH message, according to predetermined path position, right
First subsegment is received pretreatment, obtains first data to decode corresponding to subsegment；In the same time
In section, according to the local sequence that first subsegment is corresponding with first subsegment, determine that first subsegment is corresponding
Path position；
For each subsegment in addition to first subsegment and last subsegment, according to a upper subsegment correspondence
Path position, current subsegment is received pretreatment, obtains the data to decode that current subsegment is corresponding；?
In the same time period, according to the local sequence that current subsegment is corresponding with current subsegment, determine that current subsegment is corresponding
Path position；
For last subsegment, according to the path position that a upper subsegment is corresponding, last subsegment is carried out
Receive pretreatment, obtain the data to decode that last subsegment is corresponding；
According to the data to decode that each subsegment being divided into by described RACH message is corresponding, determine described
The data to decode that RACH message is corresponding.
2. the method for claim 1, it is characterised in that the described RACH message that will receive
It is divided into multiple subsegment according to time slot, including:
Comprise the principle of integer time slot according to each subsegment being divided into, by described RACH message according to time
Gap is divided into multiple subsegment.
3. the method for claim 1, it is characterised in that determine described predetermined path position,
Including:
By the maximum diameter position in the multi-path location of leading for RACH correspondence, as position, described predetermined footpath
Put.
4. the method for claim 1, it is characterised in that described basis is divided by RACH message
Data to decode corresponding to each subsegment become, determines the data to decode that described RACH message is corresponding, bag
Include:
Data to decode order corresponding for each subsegment described or backward are merged, obtains described RACH and disappear
The data to decode that breath is corresponding.
5. determine a device for data to decode corresponding to RACH RACH message, its feature
It is, including:
Divide module, for the RACH message received is divided into multiple subsegment according to time slot, and determine
The local sequence that each subsegment in addition to last subsegment is corresponding；
Processing module, for for first subsegment being divided into by described RACH message, according to the most true
Fixed path position, is received pretreatment to first subsegment, obtains first number to be decoded corresponding to subsegment
According to；Within the same time period, according to the local sequence that first subsegment is corresponding with first subsegment, determine
The path position that one subsegment is corresponding；For each subsegment in addition to first subsegment and last subsegment,
According to the path position that a upper subsegment is corresponding, current subsegment is received pretreatment, obtains current subsegment pair
The data to decode answered；Within the same time period, according to the local sequence that current subsegment is corresponding with current subsegment,
Determine the path position that current subsegment is corresponding；For last subsegment, according to the position, footpath that a upper subsegment is corresponding
Put, last subsegment is received pretreatment, obtain the data to decode that last subsegment is corresponding；
Determine module, for the to be decoded number corresponding according to each subsegment being divided into by described RACH message
According to, determine the data to decode that described RACH message is corresponding.
6. device as claimed in claim 5, it is characterised in that described division module, specifically for pressing
Comprise the principle of integer time slot according to each subsegment being divided into, described RACH message is divided according to time slot
For multiple subsegments.
7. device as claimed in claim 5, it is characterised in that described processing module, specifically for inciting somebody to action
Maximum diameter position in the multi-path location of the leading correspondence of RACH, as described predetermined path position.
8. device as claimed in claim 5, it is characterised in that described determine module, specifically for will
Data to decode order or backward that each subsegment described is corresponding merge, and obtain described RACH message corresponding
Data to decode.
9. a base station, it is characterised in that include as arbitrary in claim 5～8 as described in determination RACH
The device of the data to decode that message is corresponding.
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| CN101242671A (en) * | 2008-03-13 | 2008-08-13 | 北京北方烽火科技有限公司 | A realization method for RACH pilot detection function of WCDMA base station |
| CN101518146A (en) * | 2006-09-15 | 2009-08-26 | 交互数字技术公司 | Method and apparatus for dynamic updates of random access parameters |
| CN102440057A (en) * | 2009-04-23 | 2012-05-02 | 交互数字专利控股公司 | Method and apparatus for random access in multicarrier wireless communications |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101518146A (en) * | 2006-09-15 | 2009-08-26 | 交互数字技术公司 | Method and apparatus for dynamic updates of random access parameters |
| CN101242671A (en) * | 2008-03-13 | 2008-08-13 | 北京北方烽火科技有限公司 | A realization method for RACH pilot detection function of WCDMA base station |
| CN102440057A (en) * | 2009-04-23 | 2012-05-02 | 交互数字专利控股公司 | Method and apparatus for random access in multicarrier wireless communications |
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