CN102711248B - Reduce the processing method of blind decoding computational load in control channel, base station and terminal - Google Patents
Reduce the processing method of blind decoding computational load in control channel, base station and terminal Download PDFInfo
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Abstract
The invention discloses a kind of reduce blind decoding computational load in control channel processing method, base station and terminal.Wherein, the method comprises: base station, according to the down link control information DCI format information of terminal feedback, arranges terminal classification indicating device, DCI pad indicator, DCI format index indicating device and DCI content indicator in announcement information; Announcement information is sent to terminal by base station, and the blind decoding DB result of calculation of receiving terminal feedback and conciliation result.By means of technical scheme of the present invention, the blind decoding computational load of control channel can be reduced.
Description
Technical field
The present invention relates to field of mobile communication, particularly relate to a kind of reduce blind decoding computational load in control channel processing method, base station and terminal.
Background technology
At present, in follow-on broadband wireless communication network, support that the problem of more large bandwidth is faced with formidable challenges under the bandwidth solved how in current wireless communication system, under the bandwidth in current wireless communication system, support that more large bandwidth becomes the key factor improving inter-cell user terminal throughput and user terminal average throughput.
Along with the continuous increase of wireless communication system bandwidth, the resource that control channel takies significantly increases thereupon, particularly along with senior multi-user's multiple-input and multiple-output (Multi-UserMultipleInputMultipleOutput, referred to as MU-MIMO, ), and spatial reuse (SpatialMultiplexing, referred to as SM) etc. the use of enhancement mode transmission technology, make constantly to introduce new down link control information (DownlinkControlInformation in a communications system, referred to as DCI) form, also user terminal (UserEquipment is made, referred to as UE) blind decoding (BlindDecoding of control channel, referred to as BD) number constantly increases.Such as, at third generation partner program (3rdGenerationPartnershipProject, referred to as 3GPP) Long Term Evolution (LongTermEvolution, referred to as LTE) in Rel-8, control channel physical downlink control channel (PhysicalDownlinkControlChannel, referred to as PDCCH) maximum BD number be 44, and in Rel-10, likely reach 5 component carriers namely, convolution code (ConvolutionalCode, CC) be polymerized, if PDCCH design identical in Rel-8 is used in these 5 CC, so BD attempts linearly increasing by 500 thus reaching 220.Therefore, the blind decoding computational load how effectively reducing control channel reduces costs for UE, implement complexity and power consumption is most important.
Summary of the invention
The invention provides a kind of reduce blind decoding computational load in control channel processing method, base station and terminal, with the problem that the blind decoding computational load solving control channel in prior art is higher.
The invention provides a kind of processing method reducing blind decoding computational load in control channel, comprise: base station, according to the down link control information DCI format information of terminal feedback, arranges terminal classification indicating device, DCI pad indicator, DCI format index indicating device and DCI content indicator in announcement information; Announcement information is sent to terminal by base station, and the blind decoding DB result of calculation of receiving terminal feedback and conciliation result.
The present invention also provides a kind of processing method reducing blind decoding computational load in control channel, comprise: terminal obtains the announcement information that base station sends, and carry out blind decoding DB calculating according to terminal classification indicating device, DCI pad indicator, DCI format index indicating device and the DCI content indicator in announcement information; DB result of calculation and conciliation result are sent to base station by terminal.
Present invention also offers a kind of base station, comprise: module is set, for the down link control information DCI format information according to terminal feedback, terminal classification indicating device, DCI pad indicator, DCI format index indicating device and DCI content indicator are set in announcement information; Sending module, for sending to terminal by announcement information; Receiver module, for blind decoding DB result of calculation and the conciliation result of receiving terminal feedback.
Present invention also offers a kind of terminal, comprise: computing module, for obtaining the announcement information that base station sends, and carry out blind decoding DB calculating according to terminal classification indicating device, DCI pad indicator, DCI format index indicating device and the DCI content indicator in announcement information; Sending module, for being sent to base station by DB result of calculation and conciliation result.
Beneficial effect of the present invention is as follows:
Classified to UE according to DCI format classification by UE classification indicating device, UE receives only and the classification corresponding with its own tier of decoding, thus effectively reduces the computational load of UE when BD control channel; The mode of filler is adopted the grade that UE classifies to be converted to other UE classification grade, and indicate whether that having DCI fills by DCI pad indicator, BD error problem in same UE classification grade can be reduced in the scouting interval, adds the flexibility of DCI and control channel design simultaneously; By DCI format index indicating device instruction DCI format index, save load unnecessary in BD calculating; By the details that DCI content indicator instruction DCI comprises, unnecessary UE convolutional code decoder can be avoided, and then significantly reduce BD computational load, in addition, because UE can receive successfully by DCI to after the right-on decoding of content of all four indicating devices, therefore, significantly reduce false-alarm problem, and less wrong up link (UpLink, referred to as UL) sends and interference.
Accompanying drawing explanation
Fig. 1 is the flow chart of the processing method of blind decoding computational load in the reduction control channel of the embodiment of the present invention one;
Fig. 2 is the flow chart of the processing method of blind decoding computational load in the reduction control channel of the embodiment of the present invention two;
Fig. 3 is the flow chart of the detailed process of the processing method of blind decoding computational load in the reduction control channel of the embodiment of the present invention;
Fig. 4 is the structural representation of the base station of the embodiment of the present invention;
Fig. 5 is the structural representation of the terminal of the embodiment of the present invention.
Embodiment
In order to the problem that the blind decoding computational load solving control channel in prior art is higher, the invention provides a kind of reduce blind decoding computational load in control channel processing method, base station and terminal, technical scheme according to the embodiment of the present invention can solve following particular problem: 1, the embodiment of the present invention can solve the control channel blind decoding computational load ever-increasing problem of BD number because bringing after the introducing of new DCI format in the scouting interval, and then the problem that the UE cost brought, enforcement complexity and power consumption increase; 2, the embodiment of the present invention can also solve in traditional control channel design and adopt the mode of filler to reduce DCI format number, and then when reducing BD number, because of the performance loss that the introducing of filler brings, and DCI format number reduces the problem of the flexibility deficiency that control channel is designed; 3, the embodiment of the present invention can also solve false-alarm problem, namely, owing to limiting CRC (CyclicRedundancyCheck in Current wireless communication system, referred to as CRC) length, UE is likely made to receive UL authorization control channel incorrect, launch incorrect in the resource of distributing, cause the interference that other UL are sent.4, the problem that the BD computational load that embodiment of the present invention solution causes because CC decodes increases, that is, before completing CC decoding and CRC check, UE does not know the problem whether control channel resource itself can use.Below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, do not limit the present invention.
Embodiment of the method one
According to embodiments of the invention, provide a kind of processing method reducing blind decoding computational load in control channel, Fig. 1 is the flow chart of the processing method of blind decoding computational load in the reduction control channel of the embodiment of the present invention one, as shown in Figure 1, following process is comprised according to the processing method of blind decoding computational load in the reduction control channel of the embodiment of the present invention:
Step 101, base station, according to the down link control information DCI format information of terminal feedback, arranges terminal classification indicating device, DCI pad indicator, DCI format index indicating device and DCI content indicator in announcement information;
Step 101 specifically comprises following process:
Step 1, classifying to terminal according to the DCI format in DCI format information in base station, and arranges terminal classification indicating device according to the classification grade of terminal; Wherein, classification grade is corresponding with one or more DCI format.
That is, the UE classification indicating device that base station (BS) is arranged is used to indicate and carries out sorted grade according to DCI format classification to UE, the classification grade of UE and DCI format can be one_to_one corresponding herein, also can one or several DCI format be classified corresponding as a classification with UE, when one_to_one corresponding, classification grade is clear and definite, but scheduling complexity is high, and vice versa.
Step 2, base station calculates corresponding DB computational load according to classification grade, if determine that DB computational load is more than or equal to predetermined threshold, then carries out filler process to the DCI format of terminal, if determine that DB computational load is less than predetermined threshold, then filler process is not carried out to the DCI format of terminal; Whether last basis carries out filler process to the DCI format of terminal arranges DCI pad indicator.
It should be noted that, whether the DCI pad indicator that base station (BS) is arranged is used to indicate has DCI filling, such as, for DCI format 0 and 1/1A, there is diverse payload size, if need to make two kinds of forms have identical payload size, need to carry out filling process to one of them DCI format.
The filling of DCI format can cause damage to performance, therefore, when carrying out filling process, the payload size of two kinds of DCI format can not differ too large, otherwise needing a lot of positions when filling process needs to fill, cause large overhead, thus performance is significantly reduced.
Step 3, base station, according to classification grade arrangement DCI format index, by the current location of DCI format index determination terminal, and arranges DCI format index indicating device according to DCI format index.
It should be noted that, the DCI format index indicating device that base station (BS) is arranged is used to indicate DCI format index, can sort according to DCI format, and record the original position of different DCI format index, like this, when user side (UE) is according to self classification grade demodulation DCI format index, directly demodulation can be carried out according to original position and DCI format index information, and decrease and unnecessary search and attempt demodulating process, effectively reduce overhead.
Step 4, base station arranges DCI content indicator according to the content information that DCI format comprises.
It should be noted that, the DCI content indicator that base station (BS) is arranged is used to indicate the details that DCI comprises, this partial content needs to use convolutional code decoder, only have when user side (UE) can correctly demodulation UE classify indicating device, DCI pad indicator, DCI format index indicating device time, UE just continues through the mode demodulation DCI content indicator of convolutional code decoder, otherwise, UE, by this partial information of not demodulation, significantly can reduce the load effect calculated control channel BD that convolutional code decoder causes like this.
Step 102, announcement information is sent to terminal by base station, and the blind decoding DB result of calculation of receiving terminal feedback and conciliation result.
Embodiment of the method two
According to embodiments of the invention, provide a kind of processing method reducing blind decoding computational load in control channel, Fig. 2 is the flow chart of the processing method of blind decoding computational load in the reduction control channel of the embodiment of the present invention two, as shown in Figure 2, following process is comprised according to the processing method of blind decoding computational load in the reduction control channel of the embodiment of the present invention:
Step 201, terminal obtains the announcement information that base station sends, and carries out blind decoding DB calculating according to terminal classification indicating device, DCI pad indicator, DCI format index indicating device and the DCI content indicator in announcement information;
In step 201, following process is specifically comprised:
Step 1, terminal is according to the classification grade of terminal classification indicating device determination terminal;
Step 2, terminal is according to the DCI format filling information of DCI pad indicator determination terminal;
Step 3, terminal searches DCI format index corresponding to terminal according to classification grade in DCI format index indicating device;
Step 4, terminal judges whether to there is the control channel resource information corresponding with terminal according to DCI format filling information and DCI format index, deposit in case in judgement, reconcile out control channel resource information according to DCI content indicator according to convolutional code decoder; Judging, in non-existent situation, not mediate to DCI content indicator, terminating DB and calculate.
Step 202, DB result of calculation and conciliation result are sent to base station by terminal.
Below in conjunction with accompanying drawing, the said method embodiment one of the embodiment of the present invention and the technical scheme of embodiment of the method two are described in detail.Fig. 3 is the flow chart of the detailed process of the processing method of blind decoding computational load in the reduction control channel of the embodiment of the present invention, as shown in Figure 3, following process is specifically comprised according to the processing method of blind decoding computational load in the reduction control channel of the embodiment of the present invention:
Step 301, BS arranges UE classification indicating device, and UE classification indicating device is used to indicate and carries out sorted grade according to DCI format classification to UE;
Step 302, BS arranges DCI pad indicator, and whether DCI pad indicator is used to indicate has DCI filling;
Step 303, BS arranges DCI format index indicating device, and DCI format index indicating device is used to indicate DCI format index;
Step 304, BS arranges DCI content indicator, and DCI content indicator is used to indicate the details that DCI comprises, and this partial content needs to use convolutional code decoder;
Step 305, UE feeds back DCI format information by control channel to BS;
Step 306, BS receives the DCI format feedback information of UE, and by UE classification indicating device determination user side (UE) sorted grade;
Step 307, BS judges the BD computational load of classification grade residing for current UE by pad indicator, if load weight, forwards step 308 to, otherwise, forward step 309 to;
Step 308, BS carries out filler process by DCI pad indicator to the DCI format of current UE, the classification grade of current UE is adjusted to the light classification grade of other BD computational loads;
Step 309, BS by DCI pad indicator for active user's end (UE) setting meets the occupied state of classification grade condition;
Step 310, BS according to the classification grade arrangement DCI format index arranged in indicating device of classifying with UE, and passes through DCI format index indicating device determination current UE position;
Step 311, the content information that BS is comprised by the DCI format of DCI content indicator determination current UE;
Step 312, BS is by uplink/downlink authorization notification UE;
Step 313, UE receives the announcement information of BS;
Step 314, UE determines the classification grade of self by UE classification indicating device;
Step 315, UE determines the DCI format filling information of self by DCI pad indicator;
Step 316, UE searches the DCI format index of self correspondence in DCI format index indicating device according to the classification grade of self;
Step 317, UE, by the DCI format index information of DCI format index indicating device demodulation self, if there is the control channel resource information of self, forwards step 318 to, otherwise, forward step 319 to;
Step 318, UE demodulates self control channel resource information according to convolutional code decoder by DCI content indicator;
Step 319, UE terminates BD computational process;
Step 320, UE is calculated and demodulation result by uplink/downlink mandate feedback control channel BD.
In sum, by means of the technical scheme of the embodiment of the present invention, classified to UE according to DCI format classification by UE classification indicating device, UE receives only and the classification corresponding with its own tier of decoding, thus effectively reduces the computational load of UE when BD control channel; The mode of filler is adopted the grade that UE classifies to be converted to other UE classification grade, and indicate whether that having DCI fills by DCI pad indicator, BD error problem in same UE classification grade can be reduced in the scouting interval, adds the flexibility of DCI and control channel design simultaneously; By DCI format index indicating device instruction DCI format index, save load unnecessary in BD calculating; By the details that DCI content indicator instruction DCI comprises, unnecessary UE convolutional code decoder can be avoided, and then significantly reduce BD computational load, in addition, because UE can receive successfully by DCI to after the right-on decoding of content of all four indicating devices, therefore, significantly reduce false-alarm problem, and less wrong up link (UpLink, referred to as UL) sends and interference.
Device embodiment one
According to embodiments of the invention, provide a kind of base station, Fig. 4 is the structural representation of the base station of the embodiment of the present invention, as shown in Figure 4, base station according to the embodiment of the present invention comprises: arrange module, the first sending module and receiver module, be described in detail below to the modules of the embodiment of the present invention.
Module is set, for the down link control information DCI format information according to terminal feedback, terminal classification indicating device, DCI pad indicator, DCI format index indicating device and DCI content indicator are set in announcement information;
Arrange module specifically to comprise:
Terminal classification indicating device arranges module, for classifying to terminal according to the DCI format in DCI format information, and arranges terminal classification indicating device according to the classification grade of terminal; Wherein, classification grade is corresponding with one or more DCI format.
That is, the UE that terminal classification indicating device arranges module installation indicating device of classifying is used to indicate and carries out sorted grade according to DCI format classification to UE, the classification grade of UE and DCI format can be one_to_one corresponding herein, also can one or several DCI format be classified corresponding as a classification with UE, when one_to_one corresponding, classification grade is clear and definite, but scheduling complexity is high, and vice versa.
DCI pad indicator arranges module, for calculating corresponding DB computational load according to classification grade, if determine that DB computational load is more than or equal to predetermined threshold, then filler process is carried out to the DCI format of terminal, if determine that DB computational load is less than predetermined threshold, then filler process is not carried out to the DCI format of terminal; Whether last basis carries out filler process to the DCI format of terminal arranges DCI pad indicator;
It should be noted that, the DCI pad indicator that DCI pad indicator arranges module installation is used to indicate whether have DCI filling, such as, for DCI format 0 and 1/1A, there is diverse payload size, if need to make two kinds of forms have identical payload size, need to carry out filling process to one of them DCI format.
The filling of DCI format can cause damage to performance, therefore, when carrying out filling process, the payload size of two kinds of DCI format can not differ too large, otherwise needing a lot of positions when filling process needs to fill, cause large overhead, thus performance is significantly reduced.
DCI format index indicating device arranges module, for according to classification grade arrangement DCI format index, by the current location of DCI format index determination terminal, and arranges DCI format index indicating device according to DCI format index;
It should be noted that, the DCI format index indicating device that DCI format index indicating device arranges module installation is used to indicate DCI format index, can sort according to DCI format, and record the original position of different DCI format index, like this, when user side (UE) is according to self classification grade demodulation DCI format index, directly demodulation can be carried out according to original position and DCI format index information, and decrease and unnecessary search and attempt demodulating process, effectively reduce overhead.
DCI content indicator arranges module, and the content information for comprising according to DCI format arranges DCI content indicator.
It should be noted that, the DCI content indicator that DCI content indicator arranges module installation is used to indicate the details that DCI comprises, this partial content needs to use convolutional code decoder, only have when user side (UE) can correctly demodulation UE classify indicating device, DCI pad indicator, DCI format index indicating device time, UE just continues through the mode demodulation DCI content indicator of convolutional code decoder, otherwise, UE, by this partial information of not demodulation, significantly can reduce the load effect calculated control channel BD that convolutional code decoder causes like this.
First sending module, for sending to terminal by announcement information;
Receiver module, for blind decoding DB result of calculation and the conciliation result of receiving terminal feedback.
Device embodiment two
According to embodiments of the invention, provide a kind of terminal, Fig. 5 is the structural representation of the terminal of the embodiment of the present invention, as shown in Figure 5, terminal according to the embodiment of the present invention comprises: computing module and the second sending module, be described in detail the modules of the embodiment of the present invention below.
Computing module, for obtaining the announcement information that base station sends, and carries out blind decoding DB calculating according to terminal classification indicating device, DCI pad indicator, DCI format index indicating device and the DCI content indicator in announcement information;
Computing module specifically comprises:
Terminal classification indicating device parsing module, for the classification grade according to terminal classification indicating device determination terminal;
DCI pad indicator parsing module, for the DCI format filling information according to DCI pad indicator determination terminal;
DCI format index indicating device parsing module, for searching DCI format index corresponding to terminal according to classification grade in DCI format index indicating device;
DCI content indicator parsing module, the control channel resource information corresponding with terminal is there is for judging whether according to DCI format filling information and DCI format index, deposit in case in judgement, reconcile out control channel resource information according to DCI content indicator according to convolutional code decoder; Judging, in non-existent situation, not mediate to DCI content indicator, terminating DB and calculate.
Second sending module, for being sent to base station by DB result of calculation and conciliation result.
The concrete handling process of the base station described in device embodiment one and the terminal described in device embodiment two can be understood according to Fig. 3 and corresponding description, does not repeat them here.
In sum, by means of the technical scheme of the embodiment of the present invention, classified to UE according to DCI format classification by UE classification indicating device, UE receives only and the classification corresponding with its own tier of decoding, thus effectively reduces the computational load of UE when BD control channel; The mode of filler is adopted the grade that UE classifies to be converted to other UE classification grade, and indicate whether that having DCI fills by DCI pad indicator, BD error problem in same UE classification grade can be reduced in the scouting interval, adds the flexibility of DCI and control channel design simultaneously; By DCI format index indicating device instruction DCI format index, save load unnecessary in BD calculating; By the details that DCI content indicator instruction DCI comprises, unnecessary UE convolutional code decoder can be avoided, and then significantly reduce BD computational load, in addition, because UE can receive successfully by DCI to after the right-on decoding of content of all four indicating devices, therefore, significantly reduce false-alarm problem, and less wrong up link (UpLink, referred to as UL) sends and interference.
Although be example object, disclose the preferred embodiments of the present invention, it is also possible for those skilled in the art will recognize various improvement, increase and replacement, and therefore, scope of the present invention should be not limited to above-described embodiment.
Claims (6)
1. reduce a processing method for blind decoding computational load in control channel, it is characterized in that, comprising:
Base station, according to the down link control information DCI format information of terminal feedback, arranges terminal classification indicating device, DCI pad indicator, DCI format index indicating device and DCI content indicator, comprising in announcement information:
, according to the DCI format information of terminal feedback, classifying to described terminal according to the DCI format in described DCI format information in base station, and arranges terminal classification indicating device according to the classification grade of described terminal;
Described base station calculates corresponding blind decoding BD computational load according to described classification grade, if determine that BD computational load is more than or equal to predetermined threshold, then filler process is carried out to the DCI format of described terminal, if determine that BD computational load is less than predetermined threshold, then filler process is not carried out to the DCI format of described terminal;
Whether last basis carries out filler process to the DCI format of described terminal arranges DCI pad indicator;
Described base station, according to described classification grade arrangement DCI format index, is determined the current location of described terminal, and is arranged DCI format index indicating device according to described DCI format index by described DCI format index;
Described base station arranges DCI content indicator according to the content information that DCI format comprises;
Described announcement information is sent to described terminal by described base station, and receives the BD result of calculation of described terminal feedback and reconcile result.
2. the method for claim 1, is characterized in that, described classification grade is corresponding with one or more described DCI format.
3. reduce a processing method for blind decoding computational load in control channel, it is characterized in that, comprising:
Terminal obtains the announcement information that base station sends, and determines the classification grade of described terminal according to the classification indicating device of described terminal;
Described terminal determines the DCI format filling information of described terminal according to down link control information DCI pad indicator;
Described terminal searches DCI format index corresponding to described terminal according to described classification grade in DCI format index indicating device;
Described terminal judges whether to there is the control channel resource information corresponding with described terminal according to described DCI format filling information and described DCI format index, deposit in case in judgement, reconcile out described control channel resource information according to DCI content indicator according to convolutional code decoder;
Judging, in non-existent situation, not mediate to DCI content indicator, terminating blind decoding BD and calculate;
BD result of calculation and conciliation result are sent to described base station by described terminal.
4. a base station, is characterized in that, comprising:
Module is set, for the down link control information DCI format information according to terminal feedback, terminal classification indicating device, DCI pad indicator, DCI format index indicating device and DCI content indicator is set in announcement information, comprises:
According to the DCI format in the DCI format information of terminal feedback, described terminal is classified, and arrange according to the classification indicating device of classification grade to described terminal of described terminal; Corresponding blind decoding BD computational load is calculated according to described classification grade, if determine that BD computational load is more than or equal to predetermined threshold, then filler process is carried out to the DCI format of described terminal, if determine that BD computational load is less than predetermined threshold, then filler process is not carried out to the DCI format of described terminal; Whether last basis carries out filler process to the DCI format of described terminal arranges DCI pad indicator; According to described classification grade arrangement DCI format index, determined the current location of described terminal by described DCI format index, and DCI format index indicating device is set according to described DCI format index; According to the content information that described DCI format comprises, DCI content indicator is set;
First sending module, for sending to described terminal by described announcement information;
Receiver module, for receiving the BD result of calculation of described terminal feedback and reconciling result.
5. base station as claimed in claim 4, it is characterized in that, described classification grade is corresponding with one or more described DCI format.
6. a terminal, is characterized in that, comprising:
Computing module, for the down link control information DCI format information according to terminal feedback, terminal classification indicating device, DCI pad indicator, DCI format index indicating device and DCI content indicator are set in announcement information, comprise: obtain the announcement information that base station sends, determine the classification grade of described terminal according to terminal classification indicating device; The DCI format filling information of described terminal is determined according to DCI pad indicator; In DCI format index indicating device, DCI format index corresponding to described terminal is searched according to described classification grade; Judge whether to there is the control channel resource information corresponding with described terminal according to described DCI format filling information and described DCI format index, deposit in case in judgement, reconcile out described control channel resource information according to DCI content indicator according to convolutional code decoder; Judging, in non-existent situation, not mediate to DCI content indicator, terminating blind decoding BD and calculate;
Second sending module, for being sent to described base station by BD result of calculation and conciliation result.
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| CN110635872A (en) * | 2018-06-25 | 2019-12-31 | 珠海市魅族科技有限公司 | Configuration method of data repeated transmission information and data repeated receiving method |
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