CN115694763A - 4G network physical layer PUCCH resource index calculation method - Google Patents

4G network physical layer PUCCH resource index calculation method Download PDF

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CN115694763A
CN115694763A CN202211162145.2A CN202211162145A CN115694763A CN 115694763 A CN115694763 A CN 115694763A CN 202211162145 A CN202211162145 A CN 202211162145A CN 115694763 A CN115694763 A CN 115694763A
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pucch format
pucch
resource
resources
format
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严小军
台鑫
王鹏
徐明哲
左永锋
时慧
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CLP Kesiyi Technology Co Ltd
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Abstract

The invention discloses a PUCCH resource index calculation method of a 4G network physical layer, belonging to the technical field of resource index, and not only can calculate the resource index range of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b through high-level protocol parameters such as cyclic prefix, available resource block number, cyclic shift interval and the like and partial physical layer parameters, but also can calculate the resource index range of PUCCH format 3 through the number of orthogonal sequences, and simultaneously provides a resource index range calculation method of PUCCH format 4 and format 5; by using the method provided by the invention, the influence of the high-level protocol parameters such as cyclic prefix, the number of available resource blocks, the number of cyclic shifts, cyclic shift intervals and the like, and partial physical layer parameters such as the number of orthogonal sequences and the like on the PUCCH resource index range can be obtained, and cross-platform transplantation of the PUCCH resource index calculation method can be carried out.

Description

4G network physical layer PUCCH resource index calculation method
Technical Field
The invention belongs to the technical field of resource indexes, and particularly relates to a 4G network physical layer PUCCH resource index calculation method.
Background
The 4G network physical layer uses the uplink control channel (PUCCH) to carry control information that the terminal feeds back to the base station. According to the difference of the carried information and the bit number of the information in each subframe, the PUCCH has various application scenes such as format 1/1a/1b, format 2/2a/2b, format 3, format 4, format 5 and the like. PUCCH format 1/1a/1b is used for hybrid automatic repeat request (HARQ) and scheduling request transmission, can carry up to two information bits, PUCCH format 2/2a/2b is used for CSI reporting, can handle up to 22 information bits/frame. PUCCH format 3 is used for multiple HARQ transmissions in a carrier aggregation scenario with more than two component carriers, and can carry up to 48 information bits/frame. PUCCH format 4 and PUCCH format 5 are used to transmit more HARQ information than PUCCH format 3. Each PUCCH format occupies different resources, and key parameters of PUCCH transmission resources, such as used resource blocks, cyclic shift, orthogonal sequences, and the like, can be obtained through PUCCH resource indexes. In order to simulate the PUCCH data, a resource index calculation method for each PUCCH format needs to be analyzed and given.
At present, the PUCCH resource index calculation methods in the physical layer of 4G network are mainly classified into two categories, one is represented by N7624C software in germany, and the other is represented by Luo Deshi watts wini qsim2 software in germany. In a first type of calculation method represented by N7624C software, resource index calculation of PUCCH format 1/1a/1b, format 2/2a/2b and PUCCH format 3 is supported. Taking the resource index range of the PUCCH format 2/2a/2b as an example, the method provides three parameters such as the number of available resource blocks of the PUCCH format 2/2a/2b, the number of cyclic shifts used for the PUCCH format 1/1a/1b during hybrid transmission of the PUCCH format 1/1a/1b and 2/2a/2b, and the cyclic shift interval, and is used for calculating the resource index of the PUCCH. The calculation of the PUCCH resource index in this type of method is schematically shown in fig. 1, where "N _ RB (2)" is the number of available resource blocks in PUCCH format 2/2a/2b, "N _ CS (1)" is the number of cyclic shifts used for PUCCH format 1/1a/1b during PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission, and "Delta Shift PUCCH" is a cyclic Shift interval. The method does not support resource index calculation under the scenes of PUCCH format 4, format 5 and the like, and simultaneously considers that all uplink resource blocks are used for PUCCH transmission (the situation that the PUCCH only occupies partial uplink resource blocks is not considered).
In a second type of calculation method represented by WinIQSIM2 software, the number of uplink resource blocks occupied by the PUCCH is calculated through a parameter of the number of resource blocks used for the PUCCH, and the PUCCH can not only occupy all the uplink resource blocks, but also occupy part of the uplink resource blocks. And then calculating the resource indexes of PUCCH format 1/1a/1b and format 2/2a/2b through three parameters such as the number of available resource blocks of PUCCH format 2/2a/2b, the number of cyclic shifts used for PUCCH format 1/1a/1b and 2/2a/2b during hybrid transmission of PUCCH format 1/1a/1b and 2/2a/2b, and the like, wherein the resource blocks of PUCCH format 2/2a/2b cannot exceed the 'number of resource blocks used for PUCCH', and the method also supports the resource index calculation of PUCCH format 4 and format 5. The calculation of the PUCCH resource index in this type of method is schematically shown in fig. 2, where "Delta Shift" is a cyclic Shift interval, "N (1) _ cs" is the number of cyclic shifts used for PUCCH format 1/1a/1b when PUCCH format 1/1a/1b and 2/2a/2b are mixed for transmission, "N (2) _ RB" is the number of available resource blocks in PUCCH format 2/2a/2b, and the parameter top with the shading in gray indicates that the parameter is automatically calculated and cannot be manually changed. The method does not give the relation between the resource index of the PUCCH and various high-level protocol parameters such as the number of available resource blocks, cyclic prefix, cyclic shift interval and the like, and simultaneously does not give the influence of the PUCCH data processing flow and other uplink signal transmission on the resource occupied by the PUCCH, and a calculation formula of the resource index range of different PUCCH formats cannot be obtained by the method.
By comprehensively analyzing two current mainstream PDSCH resource allocation methods, the following two defects in the prior art can be summarized:
1. the relation between the resource index of the PUCCH and various high-level protocol parameters such as the number of available resource blocks, cyclic prefix, cyclic shift interval and the like is not given, and meanwhile, the influence of the PUCCH data processing flow and other uplink signal transmission on the resources occupied by the PUCCH is not given.
2. And a calculation formula of resource index ranges of different PUCCH formats cannot be obtained, and the transportability is poor. The first method does not support the resource index calculation of PUCCH format 4 and format 5.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a 4G network physical layer PUCCH resource index calculation method which is reasonable in design, overcomes the defects of the prior art and has a good effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
A4G network physical layer PUCCH resource index calculation method comprises the following steps:
step 1: calculating the resource index of PUCCH format 1/1a/1 b;
the number of resource blocks used for PUCCH is N R Number of usable resource blocks in PUCCH format 1/1a/1b
Figure BDA0003860132030000021
The number of the available resource blocks of the PUCCH format 2/2a/2b is
Figure BDA0003860132030000022
The number of cyclic shifts used for PUCCH format 1/1a/1b is equal to that of cyclic shifts used for PUCCH format 1/1a/1b in PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission
Figure BDA0003860132030000023
The number of orthogonal sequences is n, and the cyclic shift interval is delta s ，
Figure BDA0003860132030000024
The following relationships exist for each parameter:
Figure BDA0003860132030000025
Δ s ∈{1，2，3}，
Figure BDA0003860132030000026
n =3 in the case of a normal cyclic prefix and n =2 in the case of an extended cyclic prefix; each time slot has at most one resource block for PUCCH format 1/1a/1b and 2/2a/2b mixed transmission; when in use
Figure BDA0003860132030000027
In time, the PUCCH formats 1/1a/1b and 2/2a/2b do not carry out hybrid transmission;
the total number of the resources of the PUCCH format 1/1a/1b, namely the maximum value of the resource index range, is divided into two parts, one part is the number of the resources for transmitting the PUCCH format 1/1a/1b only, and the other part is the number of the resources for transmitting the PUCCH format 1/1a/1b in a PUCCH format 2/2a/2b mixed transmission mode;
for the case of transmission only PUCCH format 1/1a/1b, the number of available cyclic shifts in a resource block is
Figure BDA0003860132030000028
The number of PUCCH resources contained in one resource block is the product of the number of orthogonal sequences and the number of available cyclic shifts, i.e. the number of orthogonal sequences is equal to the number of available cyclic shifts
Figure BDA0003860132030000031
Figure BDA0003860132030000032
Therefore, the number of resources of PUCCH format 1/1a/1b in this case
Figure BDA0003860132030000033
For the mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of cyclic shifts available for PUCCH format 1/1a/1b in one resource block is
Figure BDA0003860132030000034
The number of the PUCCH format 1/1a/1b resources contained in one resource block is the number of orthogonal sequences and the number of available cyclic shifts is
Figure BDA0003860132030000035
Product of, i.e.
Figure BDA0003860132030000036
At most one resource block in one slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2bTherefore, the number of resources of PUCCH format 1/1a/1b in this case
Figure BDA0003860132030000037
In summary, the total number of resources in PUCCH format 1/1a/1b is expressed as follows:
Figure BDA0003860132030000038
when one resource block in a certain slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of available resource blocks for only transmitting PUCCH format 1/1a/1b is increased
Figure BDA0003860132030000039
If the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b do not carry out hybrid transmission in a certain time slot, the hybrid transmission is carried out
Figure BDA00038601320300000310
Figure BDA00038601320300000311
Therefore, the total number of resources of the PUCCH formats 1/1a/1b satisfies the following relationship:
Figure BDA00038601320300000312
that is, the resource index range of PUCCH format 1/1a/1b is: 0 to (N) max -1)；
Step 2: calculating the resource index of PUCCH format 2/2a/2 b;
the number of resource blocks used for PUCCH is N R The number of the usable resource blocks of the PUCCH format 2/2a/2b is
Figure BDA00038601320300000313
The number of cyclic shifts used for PUCCH format 1/1a/1b is equal to that of cyclic shifts used for PUCCH format 1/1a/1b in PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission
Figure BDA00038601320300000314
Figure BDA00038601320300000315
The following relationships exist for each parameter:
Figure BDA00038601320300000316
each time slot has at most one resource block for PUCCH format 1/1a/1b and 2/2a/2b mixed transmission; when the temperature is higher than the set temperature
Figure BDA00038601320300000317
In time, the PUCCH formats 1/1a/1b and 2/2a/2b do not carry out hybrid transmission;
the total number of the resources of the PUCCH format 2/2a/2b, namely the maximum value of the resource index range, is divided into two parts, one part is the number of the resources for transmitting the PUCCH format 2/2a/2b only, and the other part is the number of the resources for transmitting the PUCCH format 2/2a/2b when the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b are in mixed transmission;
for the case of PUCCH format 2/2a/2b only transmission, the available cyclic shift number in one resource block is
Figure BDA00038601320300000318
Therefore, the number of resources of PUCCH format 2/2a/2b in this case
Figure BDA0003860132030000041
For the mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of cyclic shifts for PUCCH format 2/2a/2b in one resource block is
Figure BDA0003860132030000042
The reason for subtracting 2 is that there are 2 cyclic shift indexes to be guard cyclic shifts, which cannot be used for transmitting PUCCH; the number of resources of PUCCH format 2/2a/2b contained in one resource block is the number of available cyclic shifts, namely
Figure BDA0003860132030000043
Since at most one resource block in one slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of resources of PUCCH format 2/2a/2b in this case is large
Figure BDA0003860132030000044
In summary, the total number of resources in PUCCH format 2/2a/2b is represented by the following formula:
Figure BDA0003860132030000045
when one resource block in a certain slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of available resource blocks for only transmitting PUCCH format 2/2a/2b is increased
Figure BDA0003860132030000046
If the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b do not carry out hybrid transmission in a certain time slot, the hybrid transmission is carried out
Figure BDA0003860132030000047
Therefore, the total number of resources of PUCCH format 2/2a/2b satisfies the following relationship:
Figure BDA0003860132030000048
that is, the resource index range of PUCCH format 2/2a/2b is: 0 to (N) max -1)；
And step 3: calculating resource indexes of PUCCH formats 3, 4 and 5;
the PUCCH format 3 is formed on the basis of orthogonal sequences with the length of 5, the number of the orthogonal sequences is 5, different PUCCH format 3 resources on the same resource block are distinguished only by the orthogonal sequences without using cyclic shift on a frequency domain, and the number of the orthogonal sequences is 5;
the number of resource blocks used for PUCCH is N R Number of usable resource blocks of PUCCH format 3 is
Figure BDA0003860132030000049
One resource block contains at most 5 PUCCH resources, and thus the number of resources of PUCCH format 3 is
Figure BDA00038601320300000410
Maximum number of resources is N max ＝5N R The resource index range is 0 to (N) max -1)；
The PUCCH format 4 uses a plurality of resource blocks for data transmission, data symbols are divided into a plurality of groups and transmitted in two time slots, each group of data symbols corresponds to an SC-FDMA symbol for transmitting the PUCCH format 4 and is not distinguished by using an orthogonal sequence and cyclic shift on a frequency domain; the number of SC-FDMA symbols for transmitting PUCCH format 4 in two time slots is the same, and the number of data symbols of PUCCH format 4 in each time slot is 1/2 of the total number of symbols of the two time slots, so that the number of resources of PUCCH format 4 contained in each resource block is 1/2;
the number of resource blocks used for PUCCH is N R The number of available resource blocks of PUCCH format 4 is
Figure BDA0003860132030000051
One resource block contains 1/2 of the PUCCH resources, and thus the number of resources of PUCCH format 4 is
Figure BDA0003860132030000052
Maximum number of resources is
Figure BDA0003860132030000053
The resource index range is 0 to (N) max -1)；
The PUCCH format 5 uses one resource block for data transmission, data symbols are divided into a plurality of groups and transmitted in two time slots, and each group of data symbols corresponds to an SC-FDMA symbol for transmitting the PUCCH format 5; unlike PUCCH format 4, the SC-FDMA symbols of each transmission PUCCH format 5 are distinguished using two orthogonal sequences, so each resource block contains 1 PUCCH format 5 resource;
the number of resource blocks used for PUCCH is recorded as N R Number of available resource blocks of PUCCH format 5 is
Figure BDA0003860132030000054
One resource block contains 1 PUCCH resource, and thus the number of resources of PUCCH format 5 is
Figure BDA0003860132030000055
Maximum number of resources is N max ＝N R The resource index range is 0 to (N) max -1)。
Preferably, in step 1, the resource index calculation procedure of PUCCH format 1/1a/1b is as follows:
step 1.1: reading resource block number N for PUCCH R And the number of available resource blocks of PUCCH format 2/2a/2b
Figure BDA0003860132030000056
Step 1.2: read cyclic shift interval Δ s ；
Step 1.3: calculating the number t of available cyclic shifts in the resource block of the transmission-only PUCCH format 1/1a/1b 1 ，t 1 = 12/cyclic shift interval =12/Δ s ；
Step 1.4: reading a cyclic prefix;
step 1.5: judging whether the cyclic prefix is a conventional cyclic prefix;
if: the judgment result is that the sequence is a conventional cyclic prefix, and the number of the orthogonal sequences is n =3;
or judging whether the cyclic prefix is normal or not, wherein the number of the orthogonal sequences n =2;
step 1.6: reading the number of cyclic shifts used for PUCCH format 1/1a/1b during PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission
Figure BDA0003860132030000057
Step 1.7: judging the number of cyclic shifts in step 1.6
Figure BDA0003860132030000058
Whether it is equal to zero;
if: the decision is to loop through step 1.6Number of shifts
Figure BDA0003860132030000059
If the number is equal to zero, the PUCCH formats 1/1a/1b and 2/2a/2b do not carry out hybrid transmission; only transmitting PUCCH format 1/1a/1b, and executing step 1.8;
or the determination result is the number of cyclic shifts in step 1.6
Figure BDA00038601320300000510
If the number is not equal to zero, carrying out hybrid transmission on PUCCH formats 1/1a/1b and 2/2a/2 b; step 1.10 is executed;
step 1.8: for the situation of only transmitting PUCCH format 1/1a/1b, the maximum value N of the number of available resource blocks of the PUCCH format 1/1a/1b is calculated m，1 ；N m，1 Number of resource blocks used for PUCCH-number of available resource blocks of PUCCH format 2/2a/2 b;
namely, it is
Figure BDA0003860132030000061
Step 1.9: calculating the maximum value N of PUCCH resource index max ＝N m，1 *n*t 1 And executing the step 1.13;
step 1.10: for the mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number t of cyclic shifts available for PUCCH format 1/1a/1b in one resource block is calculated 2 ，
Figure BDA0003860132030000062
Figure BDA0003860132030000063
Step 1.11: when calculating the mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the maximum N of the number of available resource blocks for transmitting PUCCH format 1/1a/1b only m，1 ；
N m，1 Number of resource blocks used for PUCCH-number of resource blocks of PUCCH format 2/2a/2 b-1;
namely, it is
Figure BDA0003860132030000064
Step 1.12: calculating the maximum value N of PUCCH resource index max ＝N m，1 *n*t 1 +t 2 ；
Step 1.13: and (6) ending.
Preferably, in step 2, the resource index calculation procedure of PUCCH format 2/2a/2b is as follows:
step 2.1: reading resource block number N for PUCCH R ；
Step 2.2: reading the number of cyclic shifts used for PUCCH format 1/1a/1b during PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission
Figure BDA0003860132030000065
Step 2.3: judging the number of cyclic shifts
Figure BDA0003860132030000066
Whether or not it is equal to 0;
if: the judgment result is the number of cyclic shifts
Figure BDA0003860132030000067
If the number is equal to 0, the PUCCH formats 1/1a/1b and 2/2a/2b do not carry out hybrid transmission, and step 2.4 is executed;
or the judgment result is the number of cyclic shifts
Figure BDA0003860132030000068
If not, executing step 2.6;
step 2.4: for the situation of only transmitting PUCCH format 2/2a/2b, the maximum value N of the number of available resource blocks of PUCCH format 2/2a/2b is calculated m，2 ，N m，2 = number of resource blocks used for PUCCH;
step 2.5: calculating the maximum value N of PUCCH resource index max ＝N m，2 *12, then step 2.9 is performed;
step 2.6: for the case of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b hybrid transmission, the cyclic shift available for PUCCH format 2/2a/2b within one resource block is calculatedNumber of bits t 2 ；
Figure BDA0003860132030000069
Step 2.7: when calculating the mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the maximum N of the number of available resource blocks for transmitting PUCCH format 2/2a/2b only m，2 ，N m，2 Number of resource blocks used for PUCCH-1; namely N m，2 ＝N R -1；N m，2 ＝N R -1；
Step 2.8: calculating the maximum value N of PUCCH resource index max ＝N m，2 *12+t 2 ；
Step 2.9: and (6) ending.
The invention has the following beneficial technical effects:
1. the invention not only can calculate the resource index range of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b through the high-level protocol parameters such as cyclic prefix, available resource block number, cyclic shift interval and the like and partial physical layer parameters, but also can calculate the resource index range of PUCCH format 3 through the number of orthogonal sequences, and provides a calculation method of the resource index ranges of PUCCH format 4 and format 5.
2. By using the method provided by the invention, the influence of the high-level protocol parameters such as cyclic prefix, the number of available resource blocks, the number of cyclic shifts, cyclic shift intervals and the like, and partial physical layer parameters such as the number of orthogonal sequences and the like on the PUCCH resource index range can be obtained, and cross-platform transplantation of the PUCCH resource index calculation method can be carried out.
Drawings
Fig. 1 is a schematic diagram illustrating a PUCCH resource index calculation method in a first method;
fig. 2 is a schematic diagram illustrating a PUCCH resource index calculation method in the second method;
FIG. 3 is a flowchart of calculating the resource index range of PUCCH format 1/1a/1 b;
fig. 4 is a flowchart of calculating the resource index range of PUCCH format 2/2a/2 b.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
different PUCCH formats have different resource index calculation modes, and the influence of high-level protocol parameters and other uplink signals on PUCCH resource indexes is not completely the same due to different PUCCH data processing flows.
Resource index calculation of PUCCH format 1/1a/1b
The PUCCH format 1/1a/1b is formed by cyclically shifting one frequency domain sequence of length 12 (one resource block supports up to 12 cyclic shifts in the frequency domain), and is subjected to time domain orthogonal sequence spreading. In actual deployment, 12 frequency domain cyclic shifted sequences may not be used, the number of available cyclic shifts on each resource block is determined by a higher-layer protocol parameter "cyclic shift interval" parameter (value is {1,2,3 }), and the number of available cyclic shifts is a quotient of 12 and the "cyclic shift interval" parameter. The parameter value range is {1,2,3}, which represents the interval of adjacent cyclic shifts on each resource block. In the case of a normal cyclic prefix and an extended cyclic prefix, only 3 and 2 SC-FDMA symbols in one slot are available for transmitting uplink demodulation reference signals (DMRSs), corresponding to 3 and 2 DMRS orthogonal sequences, respectively. In order to meet the requirement of DMRS, in the case of a normal cyclic prefix and an extended cyclic prefix, PUCCH format 1/1a/1b can only use 3 and 2 orthogonal sequences, respectively, and the length of the orthogonal sequence in the time domain for PUCCH format 1/1a/1b is 4.
The number of resource blocks used for PUCCH is N R Number of usable resource blocks of PUCCH format 1/1a/1b
Figure BDA0003860132030000081
The number of the usable resource blocks of the PUCCH format 2/2a/2b is
Figure BDA0003860132030000082
The number of cyclic shifts used for PUCCH format 1/1a/1b is equal to that of cyclic shifts used for PUCCH format 1/1a/1b in PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission
Figure BDA0003860132030000083
The number of orthogonal sequences is n, and the cyclic shift interval is delta s ，
Figure BDA0003860132030000084
The following relationships exist for the parameters:
Figure BDA0003860132030000085
Δ s ∈{1，2，3}，
Figure BDA0003860132030000086
n =3 in the case of a normal cyclic prefix and n =2 in the case of an extended cyclic prefix. At most one resource block per slot is used for PUCCH format 1/1a/1b and 2/2a/2b hybrid transmissions. When in use
Figure BDA0003860132030000087
And in time, the PUCCH formats 1/1a/1b and 2/2a/2b do not carry out mixed transmission.
The total number of the resources of the PUCCH format 1/1a/1b, namely the maximum value of the resource index range, is divided into two parts, one part is the number of the resources for transmitting only the PUCCH format 1/1a/1b, and the other part is the number of the resources of the PUCCH format 1/1a/1b when the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b are in mixed transmission.
For the case of transmission only PUCCH format 1/1a/1b, the number of available cyclic shifts in a resource block is
Figure BDA0003860132030000088
The number of PUCCH resources contained in one resource block is the product of the number of orthogonal sequences and the number of available cyclic shifts, namely
Figure BDA0003860132030000089
Figure BDA00038601320300000810
Therefore, the number of resources of PUCCH format 1/1a/1b in this case
Figure BDA00038601320300000811
For PUCCH format 1/1a/1b and PUCCH trellisIn the case of 2/2a/2b hybrid transmission, the number of cyclic shifts available for PUCCH format 1/1a/1b in one resource block is
Figure BDA00038601320300000812
The number of the resources of PUCCH format 1/1a/1b contained in one resource block is the number of orthogonal sequences and the number of available cyclic shifts is
Figure BDA00038601320300000813
Product of, i.e.
Figure BDA00038601320300000814
Since at most one resource block in one slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of resources of PUCCH format 1/1a/1b in this case is large
Figure BDA00038601320300000815
In summary, the total number of resources of PUCCH format 1/1a/1b can be expressed as the following equation.
Figure BDA00038601320300000816
When one resource block in a certain slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of available resource blocks for only transmitting PUCCH format 1/1a/1b is increased
Figure BDA00038601320300000817
If the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b do not carry out hybrid transmission in a certain time slot, the hybrid transmission is carried out
Figure BDA00038601320300000818
Therefore, the total number of resources of PUCCH formats 1/1a/1b satisfies the following relationship.
Figure BDA00038601320300000819
That is, PUCCH trellisThe resource index range of equation 1/1a/1b is: 0 to N max -1。
The work flow of calculating the resource index range of PUCCH format 1/1a/1b is shown in fig. 3.
Resource index calculation for PUCCH (second) format 2/2a/2b
PUCCH format 2/2a/2b is formed based on a frequency domain sequence cyclic shift of length 12 (one resource block supports 12 cyclic shifts in the frequency domain), and the number of available cyclic shifts is 12. Different PUCCH format 2/2a/2b resources on the same resource block are distinguished only by cyclic shifts in the frequency domain without using orthogonal sequences.
The number of resource blocks used for PUCCH is N R The number of the usable resource blocks of the PUCCH format 2/2a/2b is
Figure BDA0003860132030000091
The number of cyclic shifts used for PUCCH format 1/1a/1b is equal to that of cyclic shifts used for PUCCH format 1/1a/1b in PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission
Figure BDA0003860132030000092
Figure BDA0003860132030000093
The following relationships exist for the parameters:
Figure BDA0003860132030000094
at most one resource block per slot is used for PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission. When the temperature is higher than the set temperature
Figure BDA0003860132030000095
And in time, the PUCCH formats 1/1a/1b and 2/2a/2b do not carry out mixed transmission.
The total number of the resources of the PUCCH format 2/2a/2b, namely the maximum value of the resource index range, is divided into two parts, one part is the number of the resources for transmitting the PUCCH format 2/2a/2b only, and the other part is the number of the resources for transmitting the PUCCH format 2/2a/2b when the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b are in mixed transmission.
For the case of transmission only of PUCCH format 2/2a/2b, the number of available cyclic shifts in a resource block is
Figure BDA00038601320300000913
Therefore, the number of resources of PUCCH format 2/2a/2b in this case
Figure BDA0003860132030000096
For the mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of cyclic shifts available for PUCCH format 2/2a/2b in one resource block is
Figure BDA0003860132030000097
The reason for subtracting 2 is that there are 2 cyclic shift indexes to be guard cyclic shifts (guard cyclic shifts) that cannot be used for transmitting PUCCH. The number of resources of PUCCH format 2/2a/2b contained in one resource block is the number of available cyclic shifts, namely
Figure BDA0003860132030000098
Since at most one resource block in one slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of resources of PUCCH format 2/2a/2b in this case is large
Figure BDA0003860132030000099
In summary, the total number of resources of PUCCH formats 2/2a/2b may be expressed as the following formula.
Figure BDA00038601320300000910
When one resource block in a certain slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of available resource blocks for only transmitting PUCCH format 2/2a/2b is increased
Figure BDA00038601320300000911
If the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b do not carry out hybrid transmission in a certain time slot, the hybrid transmission is carried out
Figure BDA00038601320300000912
Therefore, the total number of resources of PUCCH formats 2/2a/2b satisfies the following relationship.
Figure BDA0003860132030000101
That is, the resource index range of PUCCH format 2/2a/2b is: 0 to N max -1。
The work flow of calculating the resource index range of the PUCCH format 1/1a/1b is shown in fig. 4.
FIG. 2 is a flowchart of calculating a resource index range of PUCCH format 2/2a/2b
Resource index calculation for (III) PUCCH Format 3, format 4, format 5
PUCCH format 3 is formed based on orthogonal sequences of length 5, and the number of orthogonal sequences is 5. Different PUCCH format 3 resources on the same resource block are distinguished only by orthogonal sequences, and are not distinguished using cyclic shifts in the frequency domain. The number of orthogonal sequences is 5. The number of resource blocks used for PUCCH is N R Number of usable resource blocks of PUCCH format 3 is
Figure BDA0003860132030000102
One resource block contains at most 5 PUCCH resources, so the number of resources of PUCCH format 3 is
Figure BDA0003860132030000103
Maximum number of resources is N max ＝5N R Resource index range is 0-N max -1。
The PUCCH format 4 uses multiple resource blocks for data transmission, the data symbols are divided into several groups and transmitted in two slots, each group of data symbols corresponds to one SC-FDMA symbol transmitting the PUCCH format 4, and are not distinguished using orthogonal sequences and cyclic shifts in the frequency domain. The number of SC-FDMA symbols for transmitting PUCCH format 4 in two slots is the same, and the number of data symbols of PUCCH format 4 in each slot is 1/2 of the total number of symbols of the two slots, so that the number of resources of PUCCH format 4 contained in each resource block is 1/2. The number of resource blocks used for PUCCH is N R PUCCH gridThe number of available resource blocks of formula 4 is
Figure BDA0003860132030000104
One resource block contains 1/2 of the PUCCH resources, and thus the number of resources of PUCCH format 4 is
Figure BDA0003860132030000105
Maximum number of resources is
Figure BDA0003860132030000106
The resource index range is 0-N max -1。
The PUCCH format 5 uses one resource block for data transmission, and data symbols are divided into several groups and transmitted in two slots, each group of data symbols corresponding to one SC-FDMA symbol transmitting the PUCCH format 5. Unlike PUCCH format 4, the SC-FDMA symbols of each transmission PUCCH format 5 are distinguished using two orthogonal sequences, so each resource block contains 1 PUCCH format 5 resource. The number of resource blocks used for PUCCH is N R The number of available resource blocks of PUCCH format 5 is
Figure BDA0003860132030000107
One resource block contains 1 PUCCH resource, and thus the number of resources of PUCCH format 5 is
Figure BDA0003860132030000108
Figure BDA0003860132030000109
Maximum number of resources is N max ＝N R Resource index range is 0-N max -1。
Key and protection points 1: resource index calculation method for PUCCH format 1/1a/1b and PUCCH format 2/2a/2b
The invention provides a resource index calculation method and a resource index calculation process for PUCCH format 1/1a/1b and PUCCH format 2/2a/2b by using high-level protocol parameters such as cyclic prefix, available resource block number, cyclic shift interval and the like and combining partial physical layer parameters. The method makes up the defect that the resource index calculation method of the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b is not provided in the prior art.
Key and protection points 2: resource index calculation method for PUCCH format 4 and format 5
In the method provided by the invention, the data processing flows of PUCCH format 4 and format 5 are combined, the number of PUCCH resources contained in each resource block is analyzed, and a resource index calculation method of PUCCH format 4 and format 5 is provided. The method not only overcomes the defect that the first type of existing method does not support the calculation of the resource indexes of 4 formats 5 of the PUCCH format, but also makes up the defect that the second type of existing method does not provide the calculation method of the resource indexes of 4 formats and 5 of the PUCCH format.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.

Claims (3)

1. A4G network physical layer PUCCH resource index calculation method is characterized in that: the method comprises the following steps:
step 1: calculating the resource index of PUCCH format 1/1a/1 b;
the number of resource blocks used for PUCCH is recorded as N R Number of usable resource blocks of PUCCH format 1/1a/1b
Figure FDA0003860132020000011
The number of the usable resource blocks of the PUCCH format 2/2a/2b is
Figure FDA0003860132020000012
The number of cyclic shifts used for PUCCH format 1/1a/1b is equal to that of cyclic shifts used for PUCCH format 1/1a/1b in PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission
Figure FDA0003860132020000013
The number of orthogonal sequences is n, and the cyclic shift interval is delta s ，
Figure FDA0003860132020000014
The following relationships exist for each parameter:
Figure FDA0003860132020000015
Δ s ∈{1,2,3}，
Figure FDA0003860132020000016
n =3 in the case of a normal cyclic prefix, and n =2 in the case of an extended cyclic prefix; each time slot has at most one resource block for PUCCH format 1/1a/1b and 2/2a/2b mixed transmission; when in use
Figure FDA0003860132020000017
In time, the PUCCH formats 1/1a/1b and 2/2a/2b do not carry out hybrid transmission;
the total number of the resources of the PUCCH format 1/1a/1b, namely the maximum value of the resource index range, is divided into two parts, one part is the number of the resources for transmitting the PUCCH format 1/1a/1b only, and the other part is the number of the resources for transmitting the PUCCH format 1/1a/1b in a PUCCH format 2/2a/2b mixed transmission mode;
for the case of transmission only PUCCH format 1/1a/1b, the number of available cyclic shifts in a resource block is
Figure FDA0003860132020000018
The number of PUCCH resources contained in one resource block is the product of the number of orthogonal sequences and the number of available cyclic shifts, namely
Figure FDA0003860132020000019
Figure FDA00038601320200000110
Therefore, the number of resources of PUCCH format 1/1a/1b in this case
Figure FDA00038601320200000111
For the case of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b hybrid transmission, cyclic shift available for PUCCH format 1/1a/1b within one resource block is multipleNumber is
Figure FDA00038601320200000112
The number of the PUCCH format 1/1a/1b resources contained in one resource block is the number of orthogonal sequences and the number of available cyclic shifts is
Figure FDA00038601320200000113
Product of (i) i.e.
Figure FDA00038601320200000114
Since at most one resource block in one slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of resources of PUCCH format 1/1a/1b in this case is large
Figure FDA00038601320200000115
In summary, the total number of resources in PUCCH format 1/1a/1b is represented by the following formula:
Figure FDA00038601320200000116
when one resource block in a certain slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of available resource blocks for only transmitting PUCCH format 1/1a/1b is increased
Figure FDA00038601320200000117
If the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b do not carry out hybrid transmission in a certain time slot, the hybrid transmission is carried out
Figure FDA00038601320200000118
Figure FDA00038601320200000119
Therefore, the total number of resources of the PUCCH formats 1/1a/1b satisfies the following relationship:
Figure FDA0003860132020000021
that is, the resource index range of PUCCH format 1/1a/1b is: 0 to (N) max -1)；
Step 2: calculating the resource index of PUCCH format 2/2a/2 b;
the number of resource blocks used for PUCCH is N R The number of the usable resource blocks of the PUCCH format 2/2a/2b is
Figure FDA0003860132020000022
The number of cyclic shifts used for PUCCH format 1/1a/1b is equal to that of cyclic shifts used for PUCCH format 1/1a/1b in PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission
Figure FDA0003860132020000023
Figure FDA0003860132020000024
The following relationships exist for each parameter:
Figure FDA0003860132020000025
each time slot has at most one resource block for PUCCH format 1/1a/1b and 2/2a/2b mixed transmission; when the temperature is higher than the set temperature
Figure FDA0003860132020000026
In time, the PUCCH formats 1/1a/1b and 2/2a/2b do not carry out hybrid transmission;
the total number of the resources of the PUCCH format 2/2a/2b, namely the maximum value of the resource index range, is divided into two parts, one part is the number of the resources for transmitting the PUCCH format 2/2a/2b only, and the other part is the number of the resources for transmitting the PUCCH format 2/2a/2b when the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b are in mixed transmission;
for the case of transmission only of PUCCH format 2/2a/2b, the number of available cyclic shifts in a resource block is
Figure FDA0003860132020000027
Therefore, the number of resources of PUCCH format 2/2a/2b in this case
Figure FDA0003860132020000028
For the mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of cyclic shifts for PUCCH format 2/2a/2b in one resource block is
Figure FDA0003860132020000029
The reason for subtracting 2 is that there are 2 cyclic shift indexes to be guard cyclic shifts, which cannot be used for transmitting PUCCH; the number of resources of PUCCH format 2/2a/2b contained in one resource block is the number of available cyclic shifts, namely
Figure FDA00038601320200000210
Since at most one resource block in one slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of resources of PUCCH format 2/2a/2b in this case is large
Figure FDA00038601320200000211
In summary, the total number of resources in PUCCH format 2/2a/2b is represented by the following formula:
Figure FDA00038601320200000212
when one resource block in a certain slot is used for mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number of available resource blocks for only transmitting PUCCH format 2/2a/2b is increased
Figure FDA00038601320200000213
If the PUCCH format 1/1a/1b and the PUCCH format 2/2a/2b do not carry out hybrid transmission in a certain time slot, the hybrid transmission is carried out
Figure FDA00038601320200000214
Therefore, the total number of resources of PUCCH format 2/2a/2b is fullThe following relationships hold:
Figure FDA00038601320200000215
that is, the resource index range of PUCCH format 2/2a/2b is: 0 to (N) max -1)；
And step 3: calculating resource indexes of PUCCH formats 3, 4 and 5;
the PUCCH format 3 is formed on the basis of orthogonal sequences with the length of 5, the number of the orthogonal sequences is 5, different PUCCH format 3 resources on the same resource block are distinguished only by the orthogonal sequences without using cyclic shift on a frequency domain, and the number of the orthogonal sequences is 5;
the number of resource blocks used for PUCCH is N R Number of usable resource blocks of PUCCH format 3 is
Figure FDA0003860132020000031
One resource block contains at most 5 PUCCH resources, so the number of resources of PUCCH format 3 is
Figure FDA0003860132020000032
Maximum number of resources is N max ＝5N R The resource index range is 0 to (N) max -1)；
The PUCCH format 4 uses a plurality of resource blocks for data transmission, data symbols are divided into a plurality of groups and transmitted in two time slots, each group of data symbols corresponds to an SC-FDMA symbol for transmitting the PUCCH format 4 and is not distinguished by using an orthogonal sequence and cyclic shift on a frequency domain; the number of SC-FDMA symbols for transmitting PUCCH format 4 in two slots is the same, and the number of data symbols of PUCCH format 4 in each slot is 1/2 of the total number of symbols of the two slots, so that the number of resources of PUCCH format 4 contained in each resource block is 1/2;
the number of resource blocks used for PUCCH is N R The number of available resource blocks of PUCCH format 4 is
Figure FDA0003860132020000033
One resource block contains 1/2 of the PUCCH resources, and thus the number of resources of PUCCH format 4 is
Figure FDA0003860132020000034
Maximum number of resources is
Figure FDA0003860132020000035
The resource index range is 0 to (N) max -1)；
The PUCCH format 5 uses one resource block for data transmission, data symbols are divided into a plurality of groups and transmitted in two time slots, and each group of data symbols corresponds to an SC-FDMA symbol for transmitting the PUCCH format 5; unlike PUCCH format 4, the SC-FDMA symbols of each transmission PUCCH format 5 are distinguished using two orthogonal sequences, so each resource block contains 1 PUCCH format 5 resource;
the number of resource blocks used for PUCCH is recorded as N R Number of available resource blocks of PUCCH format 5 is
Figure FDA0003860132020000036
One resource block contains 1 PUCCH resource, and thus the number of resources of PUCCH format 5 is
Figure FDA0003860132020000037
Maximum number of resources is N max ＝N R The resource index range is 0 to (N) max -1)。
2. The method for calculating the resource index of the physical layer PUCCH of the 4G network according to claim 1, wherein: in step 1, the resource index calculation process of the PUCCH format 1/1a/1b is as follows:
step 1.1: reading resource block number N for PUCCH R And the number of available resource blocks of PUCCH format 2/2a/2b
Figure FDA0003860132020000038
Step 1.2: read cyclic shift interval Δ s ；
Step 1.3: calculating the number t of available cyclic shifts in the resource block of the transmission-only PUCCH format 1/1a/1b 1 ，t 1 = 12/cyclic shift interval =12/Δ s ；
Step 1.4: reading a cyclic prefix;
step 1.5: judging whether the cyclic prefix is a conventional cyclic prefix;
if: the judgment result is that the sequence is a conventional cyclic prefix, and the number of the orthogonal sequences is n =3;
or judging whether the cyclic prefix is normal or not, wherein the number of the orthogonal sequences n =2;
step 1.6: reading the number of cyclic shifts used for PUCCH format 1/1a/1b during PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission
Figure FDA0003860132020000041
Step 1.7: judging the number of cyclic shifts in step 1.6
Figure FDA0003860132020000042
Whether it is equal to zero;
if: the determination result is the number of cyclic shifts in step 1.6
Figure FDA0003860132020000043
If the number is equal to zero, the PUCCH formats 1/1a/1b and 2/2a/2b do not carry out hybrid transmission; only transmitting PUCCH format 1/1a/1b, and executing step 1.8;
or the determination result is the number of cyclic shifts in step 1.6
Figure FDA0003860132020000044
If the transmission rate is not equal to zero, carrying out hybrid transmission on PUCCH formats 1/1a/1b and 2/2a/2 b; step 1.10 is executed;
step 1.8: for the situation of only transmitting PUCCH format 1/1a/1b, the maximum value N of the number of available resource blocks of the PUCCH format 1/1a/1b is calculated m,1 ；N m,1 Number of resource blocks used for PUCCH-number of available resource blocks of PUCCH format 2/2a/2 b;
namely, it is
Figure FDA0003860132020000045
Step 1.9: calculating the maximum value N of PUCCH resource index max ＝N m,1 *n*t 1 And executing the step 1.13;
step 1.10: for the condition of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b mixed transmission, the number t of cyclic shifts available for PUCCH format 1/1a/1b in one resource block is calculated 2 ，
Figure FDA0003860132020000046
Figure FDA0003860132020000047
Step 1.11: when calculating the mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the maximum N of the number of available resource blocks for transmitting PUCCH format 1/1a/1b only m,1 ；
N m,1 Number of resource blocks for PUCCH-number of resource blocks of PUCCH format 2/2a/2 b-1;
namely, it is
Figure FDA0003860132020000048
Step 1.12: calculating the maximum value N of PUCCH resource index max ＝N m,1 *n*t 1 +t 2 ；
Step 1.13: and (6) ending.
3. The method for calculating the PUCCH resource index of the 4G network physical layer according to claim 1, wherein: in step 2, the resource index calculation flow of the PUCCH format 2/2a/2b is as follows:
step 2.1: reading resource block number N for PUCCH R ；
Step 2.2: reading the number of cyclic shifts used for PUCCH format 1/1a/1b during PUCCH format 1/1a/1b and 2/2a/2b hybrid transmission
Figure FDA0003860132020000051
Step 2.3: judging the number of cyclic shifts
Figure FDA0003860132020000052
Whether or not it is equal to 0;
if: the judgment result is the number of cyclic shifts
Figure FDA0003860132020000053
If the number is equal to 0, the PUCCH formats 1/1a/1b and 2/2a/2b do not carry out hybrid transmission, and step 2.4 is executed;
or the judgment result is the number of cyclic shifts
Figure FDA0003860132020000054
If not, executing step 2.6;
step 2.4: for the situation of only transmitting PUCCH format 2/2a/2b, the maximum value N of the number of available resource blocks of PUCCH format 2/2a/2b is calculated m,2 ，N m,2 = number of resource blocks used for PUCCH;
step 2.5: calculating the maximum value N of PUCCH resource index max ＝N m,2 *12, then step 2.9 is performed;
step 2.6: for the mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the number t of cyclic shifts available for PUCCH format 2/2a/2b in one resource block is calculated 2 ；
Figure FDA0003860132020000055
Step 2.7: when calculating the mixed transmission of PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, the maximum N of the number of available resource blocks for transmitting PUCCH format 2/2a/2b only m,2 ，N m,2 Number of resource blocks used for PUCCH-1; namely N m,2 ＝N R -1；N m,2 ＝N R -1；
Step 2.8: calculating the maximum value N of PUCCH resource index max ＝N m,2 *12+t 2 ；
Step 2.9: and (6) ending.
CN202211162145.2A 2022-09-23 2022-09-23 4G network physical layer PUCCH resource index calculation method Pending CN115694763A (en)

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