CN103546243A - Method and device for determining data to be decoded corresponding to RACH messages and base station - Google Patents
Method and device for determining data to be decoded corresponding to RACH messages and base station Download PDFInfo
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- CN103546243A CN103546243A CN201310516159.4A CN201310516159A CN103546243A CN 103546243 A CN103546243 A CN 103546243A CN 201310516159 A CN201310516159 A CN 201310516159A CN 103546243 A CN103546243 A CN 103546243A
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Abstract
The embodiment and the invention relates to the technical field of communication, in particular to a method and device for determining data to be decoded corresponding to RACH messages. The method and device are used for guaranteeing the fact that the accuracy of receiving preprocessing carried out on the RACH messages is high and the duration of waiting the receiving preprocessing operation to be carried out on the RACH messages is short. The method for determining the data to be decoded corresponding to the RACH messages comprises the steps that the RACH messages are divided into a plurality of subsections according to time slots; in the subsections except for the first subsection and the last subsection, receiving preprocessing is carried out on the current subsection according to the diameter position of the last subsection to obtain the data to be decoded, and in the same time quantum, the diameter position of the current subsection is determined according to the current subsection and a corresponding local sequence; according to the data to be decoded of the subsections, the data to be decoded of the RACH messages are determined.
Description
Technical field
The present invention relates to communication technical field, particularly method and apparatus and the base station of data to decode corresponding to a kind of definite RACH message.
Background technology
WCDMA(Wideband Code Division Multiple Access (WCDMA), Wideband Code Division Multiple Access) standard is a kind of standard in 3 G system, in WCDMA system, RACH(Random Access Channel, Random Access Channel) there is very important effect, it is mainly used in transmitting the leading and RACH message of RACH, wherein, leading scrambler sequence and the signature sequence of comprising of RACH, the length of RACH message is 10ms(millisecond) or 20ms, when the length of RACH message is 10ms, RACH message comprises frame data, when the length of RACH message is 20ms, RACH message comprises two frame data, every frame data that RACH message comprises comprise 15 time slots, described in each, time slot comprises control information and data message.
Fig. 1 take below as example, to RACH transmission RACH is leading, be introduced with process RACH message, as shown in Figure 1, RACH transmission RACH is leading to be comprised the steps: with process RACH message
Steps A 1, UE(terminal) find effective RACH, and by the RACH that finds according to initial gain value to NodeB(base station) to send RACH leading, indication NodeB, RACH from UE being detected when leading, sends AICH(to UE and catches indication);
Steps A 2, NodeB do not detect from the RACH of UE leading, to UE, do not send AICH, UE does not receive from NodeB for the leading described AICH of RACH in setting-up time, UE increases transmission power level according to the step-length of setting, in the effective access slot of the next one, by described RACH, to NodeB, resend RACH leading;
Wherein, in steps A 2, if it is leading that NodeB detects from the RACH of UE, to UE, send AICH, UE receives from NodeB for the leading described AICH of RACH in setting-up time, UE can directly send RACH message by described RACH to NodeB, and indication NodeB carries out reception & disposal to the RACH message from UE.
Wherein, in steps A 2, if NodeB, because the RACH not detecting from UE is leading always, does not send AICH to UE, UE circulation performs step A2.
Steps A 3, NodeB detect from the RACH of UE leading, and send for the leading AICH of RACH to UE;
Steps A 4, UE receive from NodeB for the leading described AICH of RACH in setting-up time, and UE sends RACH message by described RACH to NodeB, and indication NodeB carries out reception & disposal to the RACH message from UE.
The reception & disposal that NodeB carries out the RACH message from UE at present comprises reception preliminary treatment and decoding processing, first, RACH message from UE is received to preliminary treatment, to obtain data to decode corresponding to described RACH message, then, the described data to decode obtaining is carried out to decoding processing.
Wherein, the multi-path location that NodeB is corresponding according to RACH message, receives preliminary treatment to described RACH message, thereby the accuracy of the multi-path location of determining has determined the RACH message from UE to receive pretreated accuracy to a certain extent.
At present, NodeB determines that the method for the multi-path location that the RACH message receive is corresponding comprises following two kinds:
The local sequence of method one, and described RACH leading correspondence leading according to the RACH that detects, determines multi-path location corresponding to described RACH message, comprising:
The local sequence of step B1, and described RACH leading correspondence leading according to the RACH that detects, determine the multi-path location of the leading correspondence of described RACH, wherein, the local sequence of the leading correspondence of described RACH is the leading sequence carrying of RACH that NodeB stores and described, that is, the leading signature sequence of described RACH;
Step B2, by the multi-path location of the leading correspondence of described RACH, as multi-path location corresponding to described RACH message.
RACH message and local sequence corresponding to described RACH message that method two, basis detect, determine multi-path location corresponding to described RACH message, wherein, local sequence corresponding to described RACH message is the pilot frequency sequence that the control information of each time slot in RACH message that NodeB stores and described comprises.
The length leading due to RACH only has 2ms(millisecond), when determining the multi-path location of the leading correspondence of RACH, be not enough to antimierophonic impact, thereby in multi-path location corresponding to the described RACH message of determining according to method one except maximum diameter position, other path positions are that the likelihood ratio in false footpath is larger, thereby when RACH message is received to preliminary treatment, cause receiving pretreated accuracy not high, make the probability of wrong decoding larger.
Because method two needs according to the RACH message detecting, determine multi-path location corresponding to described RACH message, thereby NodeB is after RACH message being detected, need first according to the RACH message detecting, carry out Multipath searching, determine multi-path location corresponding to described RACH message, then could be according to multi-path location corresponding to described RACH message of determining, described RACH message received to preliminary treatment, thereby increased to a great extent NodeB and wait for the duration that RACH message is received to pretreatment operation.
In sum, in prior art, also do not have a kind of can guarantee to RACH message receive pretreated accuracy higher, can guarantee to wait for the less method of duration that RACH message is received to pretreatment operation again.
Summary of the invention
Method and apparatus and the base station of the data to decode that a kind of definite RACH message that the embodiment of the present invention provides is corresponding, in order to provide a kind of can guarantee to RACH message receive pretreated accuracy higher, can guarantee to wait for the less method and apparatus of duration that RACH message is received to pretreatment operation again.
First aspect, the embodiment of the present invention provides the method for data to decode corresponding to a kind of definite RACH message, comprising:
The RACH message receiving is divided into a plurality of subsegments according to time slot, and determines local sequence corresponding to each subsegment except last subsegment;
For first subsegment being divided into by described RACH message, according to predetermined path position, first subsegment is received to preliminary treatment, obtain data to decode corresponding to first subsegment; In section, according to first subsegment and local sequence corresponding to first subsegment, determine the path position that first subsegment is corresponding at one time;
Each subsegment for except first subsegment and last subsegment, according to a upper path position that subsegment is corresponding, receives preliminary treatment to current subsegment, obtains data to decode corresponding to current subsegment; In section, according to current subsegment and local sequence corresponding to current subsegment, determine the path position that current subsegment is corresponding at one time;
For last subsegment, according to a upper path position that subsegment is corresponding, last subsegment is received to preliminary treatment, obtain data to decode corresponding to last subsegment;
According to data to decode corresponding to each subsegment being divided into by described RACH message, determine data to decode corresponding to described RACH message.
In embodiments of the present invention, the RACH message receiving is carried out to segment processing, for each subsegment except first subsegment, according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, because a described upper path position corresponding to subsegment is to determine in real time according to a upper subsegment and local sequence corresponding to a upper subsegment, therefore the accuracy of path position corresponding to a described upper subsegment is higher, and the gap of the accuracy of path position corresponding to adjacent two subsegments of determining is little of ignoring, therefore path position corresponding to a upper subsegment is used for to the reception preliminary treatment of current subsegment, still can guarantee the pretreated high accuracy of the reception of current subsegment.
In embodiments of the present invention, for first subsegment, according to predetermined path position, first subsegment is received to preliminary treatment, therefore greatly dwindled and waited for the duration that first subsegment is received to pretreatment operation, that is, first subsegment is received to approximate can the ignoring of time delay before pretreatment operation;
For each subsegment except first subsegment, according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, due to on a subsegment receive in the pretreated same time period, just obtain a path position that subsegment is corresponding, therefore when current subsegment is received to preliminary treatment, can be directly according to the upper path position that subsegment is corresponding having obtained, current subsegment is received to preliminary treatment, thereby greatly dwindled, wait for the duration that each subsegment except first subsegment is received to pretreatment operation, each subsegment except first subsegment is received to approximate can the ignoring of time delay before pretreatment operation.
Preferably, the RACH message receiving is divided into a plurality of subsegments according to time slot, comprises:
The principle that comprises an integer time slot according to each subsegment being divided into, is divided into a plurality of subsegments by described RACH message according to time slot.
In embodiments of the present invention, provide a kind of the RACH message receiving has been divided into the embodiment of a plurality of subsegments according to time slot, it should be noted that, the concrete mode that the embodiment of the present invention provides is only for explaining the execution mode of the embodiment of the present invention, and is not used in the execution mode of the restriction embodiment of the present invention.
Preferably, determine described predetermined path position, comprising:
By the maximum diameter position in the multi-path location of the leading correspondence of RACH, as described predetermined path position.
In embodiments of the present invention, because the accuracy of the maximum diameter position in the multi-path location of the leading correspondence of RACH is higher, thereby by the maximum diameter position in the multi-path location of the leading correspondence of RACH, as first subsegment being received to pretreated described predetermined path position, can guarantee that first subsegment is received to pretreated accuracy higher.
Preferably, according to data to decode corresponding to each subsegment being divided into by RACH message, determine data to decode corresponding to described RACH message, comprising:
Data to decode order or backward that described each subsegment is corresponding merge, and obtain data to decode corresponding to described RACH message.
In embodiments of the present invention, provide two kinds of data to decode corresponding to each subsegment that are divided into according to RACH message to determine the embodiment of the data to decode that described RACH message is corresponding.
Second aspect, the embodiment of the present invention provides the device of data to decode corresponding to a kind of definite RACH message, comprising:
Divide module, for the RACH message receiving is divided into a plurality of subsegments according to time slot, and determine local sequence corresponding to each subsegment except last subsegment;
Processing module, for first subsegment for being divided into by described RACH message, according to predetermined path position, receives preliminary treatment to first subsegment, obtains data to decode corresponding to first subsegment; In section, according to first subsegment and local sequence corresponding to first subsegment, determine the path position that first subsegment is corresponding at one time; Each subsegment for except first subsegment and last subsegment, according to a upper path position that subsegment is corresponding, receives preliminary treatment to current subsegment, obtains data to decode corresponding to current subsegment; In section, according to current subsegment and local sequence corresponding to current subsegment, determine the path position that current subsegment is corresponding at one time; For last subsegment, according to a upper path position that subsegment is corresponding, last subsegment is received to preliminary treatment, obtain data to decode corresponding to last subsegment;
Determination module, for according to data to decode corresponding to each subsegment being divided into by described RACH message, determines data to decode corresponding to described RACH message.
In embodiments of the present invention, the device of determining the data to decode that RACH message is corresponding carries out segment processing by the RACH message receiving, for each subsegment except first subsegment, according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, can guarantee the pretreated high accuracy of the reception of current subsegment.
In embodiments of the present invention, for first subsegment, determine that the device of the data to decode that RACH message is corresponding is according to predetermined path position, first subsegment is received to preliminary treatment, therefore greatly dwindled and waited for the duration that first subsegment is received to pretreatment operation, first subsegment has been received to approximate can the ignoring of time delay before pretreatment operation;
For each subsegment except first subsegment, determine that the device of the data to decode that RACH message is corresponding is according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, greatly dwindled and waited for the duration that each subsegment except first subsegment is received to pretreatment operation, each subsegment except first subsegment has been received to approximate can the ignoring of time delay before pretreatment operation.
Preferably, described division module, the principle that comprises an integer time slot specifically for each subsegment according to being divided into, is divided into a plurality of subsegments by described RACH message according to time slot.
In embodiments of the present invention, provide the device of data to decode corresponding to definite RACH message that the RACH message receiving is divided into the embodiment of a plurality of subsegments according to time slot, it should be noted that, the concrete mode that the embodiment of the present invention provides is only for explaining the execution mode of the embodiment of the present invention, and is not used in the execution mode of the restriction embodiment of the present invention.
Preferably, described processing module, specifically for by the maximum diameter position in the multi-path location of the leading correspondence of RACH, as described predetermined path position.
In embodiments of the present invention, because the accuracy of the maximum diameter position in the multi-path location of the leading correspondence of RACH is higher, thereby the device of data to decode corresponding to definite RACH message is by the maximum diameter position in the multi-path location of the leading correspondence of RACH, as first subsegment being received to pretreated described predetermined path position, can guarantee that first subsegment is received to pretreated accuracy higher.
Preferably, described determination module, specifically for corresponding data to decode order or the backward of described each subsegment merged, obtains data to decode corresponding to described RACH message.
In embodiments of the present invention, provide data to decode corresponding to each subsegment that the device of data to decode corresponding to definite RACH message is divided into according to RACH message to determine two kinds of embodiments of the data to decode that described RACH message is corresponding.
The third aspect, the embodiment of the present invention provides a kind of base station, comprises the device of the data to decode that definite RACH message described above is corresponding.
In embodiments of the present invention, due to each subsegment for except first subsegment, the device of determining the data to decode that RACH message is corresponding can guarantee the pretreated high accuracy of the reception of current subsegment, therefore comprises that the base station of the device of the data to decode that described definite RACH message is corresponding also can guarantee the pretreated high accuracy of the reception of current subsegment.
In embodiments of the present invention, owing to determining that the device of the data to decode that RACH message is corresponding can guarantee greatly to dwindle, wait for the duration that each subsegment is received to pretreatment operation, the base station that therefore comprises the device of the data to decode that described definite RACH message is corresponding also can guarantee greatly to dwindle waits for the duration that each subsegment is received to pretreatment operation.
Compared with prior art, in embodiments of the present invention, the RACH message receiving is carried out to segment processing, for each subsegment except first subsegment, according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, because a upper path position corresponding to subsegment is to determine in real time, therefore the accuracy of path position corresponding to a upper subsegment is higher, and because the gap of the accuracy of path position corresponding to adjacent two subsegments of determining is little of ignoring, therefore path position corresponding to a upper subsegment is used for to the reception preliminary treatment of current subsegment, can guarantee the pretreated high accuracy of the reception of current subsegment.
Compared with prior art, in embodiments of the present invention, the RACH message receiving is carried out to segment processing; For first subsegment, according to predetermined path position, first subsegment is received to preliminary treatment, therefore greatly dwindled and waited for the duration that first subsegment is received to pretreatment operation; For each subsegment except first subsegment, due to on a subsegment receive in the pretreated same time period, just obtain a path position that subsegment is corresponding, therefore when current subsegment is received to preliminary treatment, can be directly according to the upper path position that subsegment is corresponding having obtained, current subsegment is received to preliminary treatment, thereby greatly dwindled, wait for the duration that each subsegment except first subsegment is received to pretreatment operation.
Accompanying drawing explanation
Fig. 1 transmits the process schematic diagram of the leading and RACH message of RACH by RACH in background technology of the present invention;
Fig. 2 determines the method flow schematic diagram of the data to decode that RACH message is corresponding in the embodiment of the present invention;
Fig. 3 carries out the complete method schematic flow sheet of reception & disposal to RACH message in the embodiment of the present invention;
Fig. 4 determines the structural representation of the device of the data to decode that RACH message is corresponding in the embodiment of the present invention.
Embodiment
In embodiments of the present invention, the RACH message receiving is carried out to segment processing, for each subsegment except first subsegment, according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, can guarantee the pretreated high accuracy of the reception of current subsegment.
In embodiments of the present invention, the RACH message receiving is carried out to segment processing, for first subsegment, according to predetermined path position, first subsegment is received to preliminary treatment, therefore greatly dwindled and waited for the duration that first subsegment is received to pretreatment operation; For each subsegment except first subsegment, when current subsegment is received to preliminary treatment, can be directly according to the upper path position that subsegment is corresponding having obtained, current subsegment is received to preliminary treatment, thereby greatly dwindled, wait for the duration that each subsegment except first subsegment is received to 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, each subsegment in a plurality of subsegments that are divided into for the RACH message by receiving, local sequence corresponding to this subsegment be that NodeB stores and this subsegment in the pilot frequency sequence that comprises of the control information of each time slot.
As shown in Figure 2, the embodiment of the present invention determines that the method for the data to decode that RACH message is corresponding comprises the following steps:
Each subsegment for except first subsegment and last subsegment, according to a upper path position that subsegment is corresponding, receives preliminary treatment to current subsegment, obtains data to decode corresponding to current subsegment; In section, according to current subsegment and local sequence corresponding to current subsegment, determine the path position that current subsegment is corresponding at one time;
For last subsegment, according to a upper path position that subsegment is corresponding, last subsegment is received to preliminary treatment, obtain data to decode corresponding to last subsegment;
Data to decode corresponding to each subsegment that step 203, basis are divided into by described RACH message, determines data to decode corresponding to described RACH message.
In enforcement, the RACH message receiving is carried out to segment processing, for each subsegment except first subsegment, according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, because a upper path position corresponding to subsegment is to determine in real time, therefore the accuracy of path position corresponding to a upper subsegment is higher, and because the gap of the accuracy of path position corresponding to adjacent two subsegments of determining is little of ignoring, therefore path position corresponding to a upper subsegment is used for to the reception preliminary treatment of current subsegment, can guarantee the pretreated high accuracy of the reception of current subsegment.
In enforcement, the RACH message receiving is carried out to segment processing,
For first subsegment, according to predetermined path position, first subsegment is received to preliminary treatment, therefore greatly dwindled and waited for the duration that first subsegment is received to pretreatment operation;
For each subsegment except first subsegment, due to on a subsegment receive in the pretreated same time period, just obtain a path position that subsegment is corresponding, therefore when current subsegment is received to preliminary treatment, can be directly according to the upper path position that subsegment is corresponding having obtained, current subsegment is received to preliminary treatment, thereby greatly dwindled, wait for the duration that each subsegment except first subsegment is received to pretreatment operation.
Preferably, in step 201, can adopt any one dividing mode, RACH message is divided into a plurality of subsegments according to time slot, that is, the timeslot number that a plurality of subsegments that are divided into by described RACH message comprise is can part identical, all identical or entirely not identical, such as, for the RACH message that comprises frame data, can be divided into 3 subsegments, each subsegment comprises 5 time slots.
Preferably, in step 201, the RACH message receiving is divided into a plurality of subsegments according to time slot, comprises:
The principle that comprises an integer time slot according to each subsegment being divided into, is divided into a plurality of subsegments by described RACH message according to time slot.
In enforcement, the principle that comprises an integer time slot according to each subsegment being divided into, described RACH message is divided into a plurality of subsegments according to time slot, can reduces the complexity of the local sequence of determining that each subsegment is corresponding, convenient definite local sequence corresponding to each subsegment.
Preferably, the pilot frequency sequence that the control information that is each time slot in RACH message due to local sequence corresponding to RACH message comprises, and the executive agent of the embodiment of the present invention stores local sequence corresponding to RACH message, therefore, in step 201, the executive agent of the embodiment of the present invention is after determining the segmented mode of RACH message, and the time slot that just can comprise according to each subsegment being divided at an easy rate, determines described local sequence corresponding to each subsegment.
In concrete enforcement, in step 202, the mode of determining described predetermined path position has multiple, such as, as required or experience set.
Preferably, in step 202, determine described predetermined path position, comprising:
By the maximum diameter position in the multi-path location of the leading correspondence of RACH, as described predetermined path position.
In enforcement, the accuracy of the maximum diameter position in the multi-path location of the leading correspondence of RACH is higher, thereby by the maximum diameter position in the multi-path location of the leading correspondence of RACH, as first subsegment being received to pretreated described predetermined path position, can guarantee that first subsegment is received to pretreated accuracy higher.
Preferably, in step 202, according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, obtain the execution mode of data to decode corresponding to current subsegment and path position corresponding according to RACH message in prior art, RACH message is received to preliminary treatment, and the execution mode that obtains data to decode corresponding to RACH message is similar.
Preferably, in step 202, according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, obtains data to decode corresponding to current subsegment, comprising:
Steps A 1, for each path position in path position corresponding to a upper subsegment, respectively according to described path position, current subsegment is carried out to descrambling and de-spreading processing, obtain the data message that current subsegment comprises;
Steps A 2, respectively data message corresponding to each path position obtaining carried out to channel estimating;
Steps A 3, according to the channel estimation results of data message corresponding to each path position, respectively data message corresponding to described each path position carried out to equilibrium treatment;
Steps A 4, data message corresponding to each path position after equilibrium treatment carried out to multipath merging, to obtain data to decode corresponding to current subsegment.
Preferably, in step 202, according to predetermined path position, first subsegment is received to preliminary treatment, obtain the execution mode of data to decode corresponding to first subsegment with according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, and the execution mode that obtains data to decode corresponding to current subsegment is similar, does not repeat them here.
Preferably, in step 202, according to a upper path position that subsegment is corresponding, last subsegment is received to preliminary treatment, obtain the execution mode of data to decode corresponding to last subsegment with according to a upper path position that subsegment is corresponding, current subsegment is received to preliminary treatment, and the execution mode that obtains data to decode corresponding to current subsegment is similar, does not repeat them here.
Preferably, in step 202, according to current subsegment and local sequence corresponding to current subsegment, determine the execution mode of the path position that current subsegment is corresponding with in prior art according to RACH message and local sequence corresponding to RACH message, determine that the execution mode of the path position that RACH message is corresponding is similar.
Preferably, in step 202, according to current subsegment and local sequence corresponding to current subsegment, determine the path position that current subsegment is corresponding, comprising:
Step B1, according to current subsegment and local sequence corresponding to current subsegment, determine the PDP(power delay matrix that current subsegment is corresponding, power delay profile);
PDP corresponding to current subsegment that step B2, basis are determined, determines the path position that current subsegment is corresponding.
Preferably, in step B1, according to current subsegment and local sequence corresponding to current subsegment, determine the PDP that current subsegment is corresponding, comprising:
According to current subsegment and local sequence corresponding to current subsegment, determine candidate PDP, by described definite candidate PDP, as PDP corresponding to current subsegment; Or
According to current subsegment and local sequence corresponding to current subsegment, determine candidate PDP, candidate PDP and default PDP are carried out to filtering processing, obtain PDP corresponding to current subsegment.
In enforcement, by candidate PDP and default PDP are carried out to filtering processing, obtain PDP corresponding to current subsegment, can guarantee the PDP corresponding according to current subsegment, stability and the accuracy of the path position that the current subsegment determined is corresponding.
Preferably, according to current subsegment and local sequence corresponding to current subsegment, determine candidate PDP, comprising:
The local sequence that current subsegment is corresponding is carried out to scrambling spread processing, obtain data segment M;
Utilize data segment M to slide to current subsegment relevant, wherein, sliding length is search window length L;
The data that obtain after relevant of sliding are carried out to coherent accumulation by time slot, obtain the matrix of L*n, wherein, n is the number of time slot of the data that obtain after relevant of described slip;
The matrix of L*n is carried out to noncoherent accumulation, and obtaining length is the candidate PDP of L.
Preferably, default PDP can be as required or experience set.
Preferably, default PDP is a upper PDP that subsegment is corresponding.
Preferably, candidate PDP and default PDP are carried out to filtering processing, obtain PDP corresponding to current subsegment, comprising:
By IIR(infinite impulse response numeral) filter, candidate PDP and default PDP are carried out to filtering processing, obtain PDP corresponding to current subsegment.
Wherein, after processing by iir filter filtering, PDP corresponding to current subsegment obtaining can determine according to following formula:
PDP
n '=α * PDP
n+ (1-α) * PDP
pformula one
Wherein, PDP
n' be PDP corresponding to current subsegment, PDP
nfor candidate PDP, PDP
pfor default PDP, α is constant.
Preferably, α is 0.875,0.75,0.625 or 0.5 etc.
Preferably, in step B2, PDP corresponding to current subsegment according to determining, determines the path position that current subsegment is corresponding, comprising:
Find the peak value of PDP corresponding to current subsegment, and using described peak value as a footpath;
By peak value and each 1chip(chip of described peak value left and right of PDP corresponding to current subsegment) the value zero setting of position;
Continue to carry out above-mentioned searching peak value, the operation using the described peak value searching out as a footpath and zero setting, until determine the path position of setting number;
Value to the non-zero position of PDP is averaged, to determine noise power-value;
According to the value of definite noise power-value and each path position of determining, calculate described snr value corresponding to each path position;
Corresponding snr value and the snr threshold of described each path position of determining compared, corresponding snr value is not less than to the path position of snr threshold, be defined as path position corresponding to current subsegment.
Preferably, the setting number of definite path position can be as required or experience set, such as, be rule of thumb set as 4 or 6.
Preferably, in step 202, according to first subsegment and local sequence corresponding to first subsegment, the execution mode of determining the path position that first subsegment is corresponding with according to the current subsegment of current subsegment and local sequence corresponding to the current subsegment of current subsegment, the execution mode of determining the path position that current subsegment is corresponding is similar, does not repeat them here.
It should be noted that, when determining PDP corresponding to first subsegment, default PDP is leading according to RACH and the definite PDP of the local sequence leading correspondence of RACH, and and local sequence RACH leading correspondence leading according to RACH determines that the execution mode of the PDP of the leading correspondence of RACH determines that with according to current subsegment and local sequence corresponding to current subsegment the execution mode of the PDP that current subsegment is corresponding is similar, do not repeat them here.
Preferably, in step 203, data to decode corresponding to each subsegment being divided into according to RACH message, determines data to decode corresponding to described RACH message, comprising:
Data to decode order or backward that described each subsegment is corresponding merge, and obtain data to decode corresponding to described RACH message.
Preferably, after determining data to decode corresponding to described RACH message, also comprise:
Data to decode corresponding to described RACH message of determining carried out to decoding processing.
It should be noted that, the executive agent of the embodiment of the present invention can be base station, can be also other new network side entities.
As shown in Figure 3, in the embodiment of the present invention, RACH message is carried out the complete method of reception & disposal, comprising:
The local sequence of step 301, and described RACH leading correspondence leading according to the RACH that receives, determines the PDP of the leading correspondence of described RACH and the multi-path location of the leading correspondence of described RACH, and the PDP of the leading correspondence of described RACH is labeled as to PDP
p;
Such as, if the RACH message receiving comprises frame data, described RACH message can be divided into three subsegments, i.e. N=3.
In concrete enforcement, because frame data comprise 15 time slots, if RACH message comprises frame data and N=3, each subsegment being divided into comprises 5 time slots, n local sequence corresponding to subsegment be that NodeB stores and n subsegment in the pilot frequency sequence that comprises of the control information of 5 time slots, n can be 1,2 or 3.
Based on same inventive concept, device and the base station of data to decode corresponding to a kind of definite RACH message are also provided in the embodiment of the present invention, owing to determining that the principle that the device of the data to decode that RACH message is corresponding is dealt with problems with base station is similar to the method for the embodiment of the present invention, therefore determine that the device of data to decode and the enforcement of base station that RACH message is corresponding can, referring to the enforcement of method, repeat part and repeat no more.
Fig. 4 is the structural representation that the embodiment of the present invention is determined the device of the data to decode that RACH message is corresponding, and as shown in the figure, the embodiment of the present invention determines that the device of the data to decode that RACH message is corresponding comprises:
Preferably, described division module 401, the principle that comprises an integer time slot specifically for each subsegment according to being divided into, is divided into a plurality of subsegments by described RACH message according to time slot.
Preferably, described processing module 402, specifically for by the maximum diameter position in the multi-path location of the leading correspondence of RACH, as described predetermined path position.
Preferably, described determination module 403, specifically for corresponding data to decode order or the backward of described each subsegment merged, obtains data to decode corresponding to described RACH message.
Preferably, the base station of the embodiment of the present invention, comprises the device of the data to decode that described definite RACH message is corresponding.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (9)
1. a method for data to decode corresponding to definite RACH message, is characterized in that, the method comprises:
The RACH message receiving is divided into a plurality of subsegments according to time slot, and determines local sequence corresponding to each subsegment except last subsegment;
For first subsegment being divided into by described RACH message, according to predetermined path position, first subsegment is received to preliminary treatment, obtain data to decode corresponding to first subsegment; In section, according to first subsegment and local sequence corresponding to first subsegment, determine the path position that first subsegment is corresponding at one time;
Each subsegment for except first subsegment and last subsegment, according to a upper path position that subsegment is corresponding, receives preliminary treatment to current subsegment, obtains data to decode corresponding to current subsegment; In section, according to current subsegment and local sequence corresponding to current subsegment, determine the path position that current subsegment is corresponding at one time;
For last subsegment, according to a upper path position that subsegment is corresponding, last subsegment is received to preliminary treatment, obtain data to decode corresponding to last subsegment;
According to data to decode corresponding to each subsegment being divided into by described RACH message, determine data to decode corresponding to described RACH message.
2. the method for claim 1, is characterized in that, described the RACH message receiving is divided into a plurality of subsegments according to time slot, comprising:
The principle that comprises an integer time slot according to each subsegment being divided into, is divided into a plurality of subsegments by described RACH message according to time slot.
3. the method for claim 1, is characterized in that, determines described predetermined path position, comprising:
By the maximum diameter position in the multi-path location of the leading correspondence of RACH, as described predetermined path position.
4. the method for claim 1, is characterized in that, data to decode corresponding to each subsegment that described basis is divided into by RACH message determined data to decode corresponding to described RACH message, comprising:
Data to decode order or backward that described each subsegment is corresponding merge, and obtain data to decode corresponding to described RACH message.
5. a device for data to decode corresponding to definite RACH message, is characterized in that, comprising:
Divide module, for the RACH message receiving is divided into a plurality of subsegments according to time slot, and determine local sequence corresponding to each subsegment except last subsegment;
Processing module, for first subsegment for being divided into by described RACH message, according to predetermined path position, receives preliminary treatment to first subsegment, obtains data to decode corresponding to first subsegment; In section, according to first subsegment and local sequence corresponding to first subsegment, determine the path position that first subsegment is corresponding at one time; Each subsegment for except first subsegment and last subsegment, according to a upper path position that subsegment is corresponding, receives preliminary treatment to current subsegment, obtains data to decode corresponding to current subsegment; In section, according to current subsegment and local sequence corresponding to current subsegment, determine the path position that current subsegment is corresponding at one time; For last subsegment, according to a upper path position that subsegment is corresponding, last subsegment is received to preliminary treatment, obtain data to decode corresponding to last subsegment;
Determination module, for according to data to decode corresponding to each subsegment being divided into by described RACH message, determines data to decode corresponding to described RACH message.
6. device as claimed in claim 5, is characterized in that, described division module, and the principle that comprises an integer time slot specifically for each subsegment according to being divided into, is divided into a plurality of subsegments by described RACH message according to time slot.
7. device as claimed in claim 5, is characterized in that, described processing module, specifically for by the 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, is characterized in that, described determination module, specifically for corresponding data to decode order or the backward of described each subsegment merged, obtains data to decode corresponding to described RACH message.
9. a base station, is characterized in that, comprises the device of the data to decode that definite RACH message as described in as arbitrary in claim 5～8 is corresponding.
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Address after: 510663 No. 10 Shenzhou Road, Guangzhou Science City, Guangdong Province Patentee after: Jingxin Network System Co.,Ltd. Address before: 510663 No. 10 Shenzhou Road, Guangzhou Science City, Guangdong Province Patentee before: Comba Telecom System (China) Ltd. |