CN108242984B - Method for generating pilot frequency sequence of multi-sub-band system - Google Patents

Method for generating pilot frequency sequence of multi-sub-band system Download PDF

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CN108242984B
CN108242984B CN201611204135.5A CN201611204135A CN108242984B CN 108242984 B CN108242984 B CN 108242984B CN 201611204135 A CN201611204135 A CN 201611204135A CN 108242984 B CN108242984 B CN 108242984B
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sequence
pilot
sub
subband
pilot sequence
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CN108242984A (en
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龚秋莎
王丽
闫亮
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Potevio Information Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
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Abstract

本申请公开了一种多子带系统的导频序列的生成方法，该方法首先根据系统所占带宽内的子带数得到第一导频序列；然后将所述第一导频序列分割成

Figure DDA0001189660200000011
个小的序列作为各子带的导频，其中，
Figure DDA0001189660200000012
为子带数。应用本申请公开的技术方案，使得导频信号的峰均比不会因为带宽增加而变大，从而降低了系统设计的复杂度。

Figure 201611204135

The present application discloses a method for generating a pilot sequence of a multi-subband system. The method firstly obtains a first pilot sequence according to the number of subbands in the bandwidth occupied by the system; and then divides the first pilot sequence into

Figure DDA0001189660200000011
A small sequence is used as the pilot of each subband, where,
Figure DDA0001189660200000012
is the number of subbands. By applying the technical solution disclosed in the present application, the peak-to-average ratio of the pilot signal will not become larger due to the increase of the bandwidth, thereby reducing the complexity of the system design.

Figure 201611204135

Description

一种多子带系统的导频序列的生成方法A method for generating a pilot sequence of a multi-subband system

技术领域technical field

本申请涉及移动通信技术领域，特别涉及一种多子带系统的导频序列的生成方法。The present application relates to the field of mobile communication technologies, and in particular, to a method for generating a pilot sequence of a multi-subband system.

背景技术Background technique

随着无线通信新技术的不断发展，以及移动互联网及物联网产业的蓬勃发展，各行业对视频监控、视频直播等无线电宽带业务的需求急剧膨胀，某些行业专网的无线电频谱具有离散、窄带的特点，如何更好的聚合多个离散窄带支持宽带化业务需求，成为一个关注焦点。With the continuous development of new wireless communication technologies and the vigorous development of the mobile Internet and Internet of Things industries, the demand for radio broadband services such as video surveillance and live video broadcasting in various industries has expanded rapidly. It has become a focus of attention on how to better aggregate multiple discrete narrowbands to support broadband service requirements.

现有一种专网系统物理上行共享信道(PUSCH)的导频序列设计方案，是利用对单子带上短的ZC序列进行循环后扩展到多子带上来支持宽带化业务需求。但是当业务带宽超过1M以上时，这种设计由于序列的循环移位有限，具有相同相位导频的子带增加，使得宽带业务的信号峰均比变大，将增加系统设计的复杂度。An existing pilot sequence design scheme for a physical uplink shared channel (PUSCH) in a private network system uses a short ZC sequence on a single subband to be cyclically extended to multiple subbands to support broadband service requirements. However, when the service bandwidth exceeds 1M, this design will increase the number of subbands with the same phase pilot due to the limited cyclic shift of the sequence, which will increase the signal peak-to-average ratio of the broadband service, which will increase the complexity of the system design.

发明内容SUMMARY OF THE INVENTION

本申请提供了一种多子带系统的导频序列的生成方法，使得导频信号的峰均比不会因为带宽增加而变大，从而降低了系统设计的复杂度。The present application provides a method for generating a pilot sequence of a multi-subband system, so that the peak-to-average ratio of the pilot signal does not increase due to the increase of the bandwidth, thereby reducing the complexity of system design.

本申请公开了一种多子带系统的导频序列的生成方法，包括：The present application discloses a method for generating a pilot sequence of a multi-subband system, including:

根据系统所占带宽内的子带数得到第一导频序列；Obtain the first pilot sequence according to the number of subbands in the bandwidth occupied by the system;

将所述第一导频序列分割成

Figure BDA0001189660180000011
个小的序列作为各子带的导频，其中，
Figure BDA0001189660180000012
为子带数。dividing the first pilot sequence into
Figure BDA0001189660180000011
A small sequence is used as the pilot of each subband, where,
Figure BDA0001189660180000012
is the number of subbands.

较佳的，所述根据系统所占带宽内的子带数得到第一导频序列包括：按照以下公式生成第一导频序列：Preferably, the obtaining the first pilot sequence according to the number of subbands in the bandwidth occupied by the system includes: generating the first pilot sequence according to the following formula:

Figure BDA0001189660180000013
Figure BDA0001189660180000013

Figure BDA0001189660180000021
Figure BDA0001189660180000021

其中，

Figure BDA0001189660180000022
为所述第一导频序列的长度，根据子带数
Figure BDA0001189660180000023
和单子带包含的子载波个数
Figure BDA0001189660180000024
确定；in,
Figure BDA0001189660180000022
is the length of the first pilot sequence, according to the number of subbands
Figure BDA0001189660180000023
and the number of subcarriers contained in a single subband
Figure BDA0001189660180000024
Sure;

基序列

Figure BDA0001189660180000025
base sequence
Figure BDA0001189660180000025

其中

Figure BDA0001189660180000026
in
Figure BDA0001189660180000026

Figure BDA0001189660180000027
是所述基序列的长度，是满足
Figure BDA0001189660180000028
的最大质数；
Figure BDA0001189660180000027
is the length of the base sequence, which satisfies
Figure BDA0001189660180000028
the largest prime number;

Figure BDA0001189660180000029
是单子带包含的子载波个数；
Figure BDA0001189660180000029
is the number of subcarriers contained in a single subband;

Figure BDA00011896601800000210
是子带数；
Figure BDA00011896601800000210
is the number of subbands;

q＝floor(q0+1/2)；q=floor(q0+1/2);

Figure BDA00011896601800000211
Figure BDA00011896601800000211

Figure BDA00011896601800000212
Figure BDA00011896601800000212

q0、q和u为中间参数，u的取值范围为0-29，floor()为向下取整运算，

Figure BDA00011896601800000213
为小区ID号。q0, q and u are intermediate parameters, the value range of u is 0-29, floor() is the round-down operation,
Figure BDA00011896601800000213
is the cell ID number.

较佳的，所述将所述第一导频序列分割成

Figure BDA00011896601800000214
个小的序列作为各子带的导频包括：Preferably, the first pilot sequence is divided into
Figure BDA00011896601800000214
A small sequence is used as the pilot of each subband including:

在进行资源映射时，将rPUSCH序列中

Figure BDA00011896601800000215
各点映射到第i个子带的
Figure BDA00011896601800000216
个子载波上。When performing resource mapping, put the r PUSCH sequence in the
Figure BDA00011896601800000215
Each point is mapped to the i-th subband
Figure BDA00011896601800000216
on subcarriers.

较佳的，所述

Figure BDA00011896601800000217
大于40。Preferably, the
Figure BDA00011896601800000217
greater than 40.

由上述技术方案可见，本申请提供的上述方法，首先根据系统所占带宽内的子载波数得到一个长ZC序列；然后将该长ZC序列分割成

Figure BDA00011896601800000218
个小的序列作为各子带的导频，其中，
Figure BDA00011896601800000219
为子带数。应用本申请公开的技术方案，使得导频信号的峰均比不会因为带宽增加而变大，从而降低了系统设计的复杂度。As can be seen from the above-mentioned technical solutions, the above-mentioned method provided by the present application first obtains a long ZC sequence according to the number of subcarriers in the bandwidth occupied by the system; then divides the long ZC sequence into
Figure BDA00011896601800000218
A small sequence is used as the pilot frequency of each subband, where,
Figure BDA00011896601800000219
is the number of subbands. By applying the technical solution disclosed in the present application, the peak-to-average ratio of the pilot signal will not become larger due to the increase of the bandwidth, thereby reducing the complexity of the system design.

附图说明Description of drawings

图1为本发明多子带系统的导频序列的生成方法的流程示意图。FIG. 1 is a schematic flowchart of a method for generating a pilot sequence of a multi-subband system according to the present invention.

具体实施方式Detailed ways

为使本申请的目的、技术方案及优点更加清楚明白，以下参照附图并举实施例，对本申请作进一步详细说明。In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and examples.

本发明提出一种多子带系统的PUSCH信道的导频序列的生成方法，如图1所示，该方法包括以下步骤：The present invention proposes a method for generating a pilot sequence of a PUSCH channel of a multi-subband system, as shown in FIG. 1 , the method includes the following steps:

步骤101：根据所占带宽内的子带数得到一个长ZC序列作为导频序列。Step 101: Obtain a long ZC sequence as a pilot sequence according to the number of subbands in the occupied bandwidth.

本申请所述“长ZC序列”是相比于现有ZC序列而言的，现有ZC序列是根据单子带宽度生成的，而本申请是根据所占带宽的子带数生成的。The "long ZC sequence" described in the present application is compared with the existing ZC sequence, which is generated according to the width of a single subband, while the present application is generated according to the number of subbands of the occupied bandwidth.

步骤102：将所述长ZC序列分割成

Figure BDA0001189660180000031
个小的序列作为各子带的导频，其中，
Figure BDA0001189660180000032
为子带数。Step 102: Divide the long ZC sequence into
Figure BDA0001189660180000031
A small sequence is used as the pilot frequency of each subband, where,
Figure BDA0001189660180000032
is the number of subbands.

通过上述处理，使得导频信号的峰均比不会因为带宽增加而变大，从而降低了系统设计的复杂度。Through the above processing, the peak-to-average ratio of the pilot signal will not become larger due to the increase of the bandwidth, thereby reducing the complexity of the system design.

下面对本申请多子带系统的PUSCH信道导频序列的具体生成方式进行详细说明。The specific generation method of the PUSCH channel pilot sequence of the multi-subband system of the present application will be described in detail below.

PUSCH的导频序列rPUSCH(·)定义为：The pilot sequence r PUSCH ( ) of PUSCH is defined as:

Figure BDA0001189660180000033
Figure BDA0001189660180000033

Figure BDA0001189660180000034
Figure BDA0001189660180000034

其中，

Figure BDA0001189660180000035
为导频序列的长度，根据子带数
Figure BDA0001189660180000036
和单子带包含的子载波个数
Figure BDA0001189660180000037
确定；in,
Figure BDA0001189660180000035
is the length of the pilot sequence, according to the number of subbands
Figure BDA0001189660180000036
and the number of subcarriers contained in a single subband
Figure BDA0001189660180000037
Sure;

其中，基序列

Figure BDA0001189660180000038
Among them, the base sequence
Figure BDA0001189660180000038

其中

Figure BDA0001189660180000039
in
Figure BDA0001189660180000039

Figure BDA00011896601800000310
是本发明长ZC序列(即所述基序列)的长度，是满足
Figure BDA00011896601800000311
的最大质数；
Figure BDA00011896601800000310
is the length of the long ZC sequence of the present invention (that is, the base sequence), which satisfies
Figure BDA00011896601800000311
the largest prime number;

Figure BDA0001189660180000041
是单子带包含的子载波个数；
Figure BDA0001189660180000041
is the number of subcarriers contained in a single subband;

Figure BDA0001189660180000042
是子带数；
Figure BDA0001189660180000042
is the number of subbands;

q＝floor(q0+1/2)；q=floor(q0+1/2);

Figure BDA0001189660180000043
Figure BDA0001189660180000043

Figure BDA0001189660180000044
Figure BDA0001189660180000044

其中，q0、q和u为中间参数，u的取值范围为0-29，floor()为向下取整运算，

Figure BDA0001189660180000045
为小区ID号。Among them, q0, q and u are intermediate parameters, the value range of u is 0-29, and floor() is the round-down operation.
Figure BDA0001189660180000045
is the cell ID number.

资源映射时，将rPUSCH序列分割成小的序列作为各子带的导频，即将rPUSCH序列中

Figure BDA0001189660180000046
各点映射到第i个子带的
Figure BDA0001189660180000047
个子载波上。During resource mapping, the r PUSCH sequence is divided into small sequences as pilots for each subband, that is, the r PUSCH sequence
Figure BDA0001189660180000046
Each point is mapped to the i-th subband
Figure BDA0001189660180000047
on subcarriers.

为兼容现有导频方式，40子带以下(含40子带)仍可以采用现有方式生成导频，40子带以上采用本发明提出的新的导频生成方案。In order to be compatible with the existing pilot frequency mode, the existing method can still be used to generate the pilot frequency below 40 sub-bands (including 40 sub-bands), and the new pilot frequency generation scheme proposed by the present invention is adopted for the 40 sub-bands and above.

40子带以下(含40子带)的PUSCH信道导频序列的具体生成方式描述如下。The specific generation method of the PUSCH channel pilot sequence below 40 subbands (including 40 subbands) is described as follows.

PUSCH的导频序列rPUSCH(·)定义为：The pilot sequence r PUSCH ( ) of PUSCH is defined as:

Figure BDA0001189660180000048
Figure BDA0001189660180000048

其中：in:

Figure BDA0001189660180000049
Figure BDA0001189660180000049

Figure BDA00011896601800000410
Figure BDA00011896601800000410

Figure BDA00011896601800000411
是单子带包含的子载波个数，
Figure BDA00011896601800000412
是子带数。
Figure BDA00011896601800000411
is the number of subcarriers contained in a single subband,
Figure BDA00011896601800000412
is the number of subbands.

其中，基序列

Figure BDA00011896601800000413
Among them, the base sequence
Figure BDA00011896601800000413

Figure BDA00011896601800000414
Figure BDA00011896601800000414

Figure BDA00011896601800000415
Figure BDA00011896601800000415

Figure BDA00011896601800000416
Figure BDA00011896601800000416

循环移位因子α根据下式得到：The cyclic shift factor α is obtained according to the following formula:

Figure BDA0001189660180000051
Figure BDA0001189660180000051

Figure BDA0001189660180000052
Figure BDA0001189660180000052

Figure BDA0001189660180000053
是Zadoff-Chu序列长度，
Figure BDA0001189660180000054
Figure BDA0001189660180000053
is the Zadoff-Chu sequence length,
Figure BDA0001189660180000054

资源映射时，rPUSCH序列中

Figure BDA0001189660180000055
映射到第i个子带的
Figure BDA0001189660180000056
个子载波上。During resource mapping, in the r PUSCH sequence
Figure BDA0001189660180000055
mapped to the ith subband
Figure BDA0001189660180000056
on subcarriers.

以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the present application. within the scope of protection.

Claims (3)

1. A method for generating a pilot sequence of a multi-subband system, comprising:
obtaining a first pilot frequency sequence according to the number of sub-bands in the bandwidth occupied by the system;
partitioning the first pilot sequence into
Figure FDA0002721341830000011
A small sequence is used as a pilot for each subband, wherein,
Figure FDA0002721341830000012
is the number of sub-bands;
the obtaining the first pilot sequence according to the number of sub-bands in the bandwidth occupied by the system includes: generating a first pilot sequence according to the following formula:
Figure FDA0002721341830000013
Figure FDA0002721341830000014
wherein,
Figure FDA0002721341830000015
for the length of the first pilot sequence, according to the number of sub-bands
Figure FDA0002721341830000016
And the number of sub-carriers contained in a single sub-band
Figure FDA0002721341830000017
Determining;
base sequence
Figure FDA0002721341830000018
Wherein
Figure FDA0002721341830000019
Figure FDA00027213418300000110
Is the length of the base sequence and is such that
Figure FDA00027213418300000111
The maximum prime number of;
Figure FDA00027213418300000112
the number of subcarriers contained in a single subband;
Figure FDA00027213418300000113
is the number of subbands;
q＝floor(q0+1/2)；
Figure FDA00027213418300000114
Figure FDA00027213418300000115
q0, q and u are intermediate parameters, the value range of u is 0-29, floor () is a down rounding operation,
Figure FDA00027213418300000116
is a cell ID number.
2. The method of claim 1, wherein the partitioning the first pilot sequence into
Figure FDA00027213418300000117
The small sequences as pilots for each subband include:
when resource mapping is carried out, r isPUSCHIn sequence (a)
Figure FDA0002721341830000021
Each point being mapped to the ith sub-band
Figure FDA0002721341830000022
On the subcarriers.
3. The method according to claim 1 or 2, characterized in that:
the above-mentioned
Figure FDA0002721341830000023
Greater than 40.
CN201611204135.5A 2016-12-23 2016-12-23 Method for generating pilot frequency sequence of multi-sub-band system Expired - Fee Related CN108242984B (en)

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CN101340273A (en) * 2007-07-04 2009-01-07 华为技术有限公司 Multiple access method, device and system
CN101433004A (en) * 2006-04-25 2009-05-13 日本电气株式会社 Pilot signal transmitting method and wireless communication apparatus
CN101438523A (en) * 2006-06-23 2009-05-20 松下电器产业株式会社 Wireless transmitting device, wireless receiving device and pilot generation method

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CN101433004A (en) * 2006-04-25 2009-05-13 日本电气株式会社 Pilot signal transmitting method and wireless communication apparatus
CN101438523A (en) * 2006-06-23 2009-05-20 松下电器产业株式会社 Wireless transmitting device, wireless receiving device and pilot generation method
CN101340273A (en) * 2007-07-04 2009-01-07 华为技术有限公司 Multiple access method, device and system

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