CN108631977B - Method and equipment for sending broadcast information indication - Google Patents

Method and equipment for sending broadcast information indication Download PDF

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CN108631977B
CN108631977B CN201710182104.2A CN201710182104A CN108631977B CN 108631977 B CN108631977 B CN 108631977B CN 201710182104 A CN201710182104 A CN 201710182104A CN 108631977 B CN108631977 B CN 108631977B
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scrambling
self
coding
decoding units
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CN108631977A (en
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张朝龙
王坚
戴胜辰
皇甫幼睿
李榕
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Huawei Technologies 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
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Abstract

The application discloses a method for sending secondary broadcast channel indication, which is applied to sending equipment and comprises the following steps: the sending equipment codes the control information to obtain a coded sequence, wherein the control information comprises secondary broadcast channel SPBCH indication information; the sending equipment scrambles the coding sequence by adopting a scrambling sequence to obtain a scrambled sequence; and the sending equipment sends the scrambled sequence after modulation and mapping operation. Through the indication information indicating the secondary broadcast channel SPBCH, the receiving equipment can acquire whether the SPBCH exists or not, and read the control information in the SPBCH.

Description

Method and equipment for sending broadcast information indication
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and a device for sending a broadcast information indicator.
Background
In a Long Term Evolution (LTE) system, a Physical Broadcast Channel (PBCH) carries a Master Information Block (MIB). Because the load of the physical broadcast channel is increasing, the MIB has been difficult to meet the requirement of communication capability, and therefore how to transmit the physical broadcast channel information becomes an urgent problem to be solved.
Disclosure of Invention
In view of the above, a main object of the present application is to provide a method and an apparatus for transmitting a broadcast information indicator, which are used for indicating a transmission resource of control information of a physical broadcast channel.
In one aspect, an embodiment of the present application provides a method for sending a secondary broadcast channel indication, where the method is applied to a sending device, and includes:
the sending equipment encodes the control information to obtain an encoding sequence, wherein the control information comprises Secondary broadcast channel (SPBCH) indication information;
the sending equipment scrambles the coding sequence by adopting a scrambling sequence to obtain a scrambled sequence;
and the sending equipment sends the scrambled sequence after modulation and mapping operation.
Through the indication information indicating the secondary broadcast channel SPBCH, the receiving equipment can acquire whether the SPBCH exists or not, and read the control information in the SPBCH.
In one possible design, the encoding the bit sequence to obtain the encoded sequence includes: and coding the coding sequence by adopting Polar coding.
On the other hand, an embodiment of the present application further provides a method for sending a secondary broadcast channel indication, where the method is applied to a sending device, and includes:
coding the control information to obtain a coding sequence;
repeating the coding sequence to obtain n self-decoding units, wherein n is an integer and n is greater than 0;
scrambling the n self-decoding units by adopting scrambling sequences to obtain scrambled sequences;
and transmitting the scrambled sequence after modulation and mapping operation.
In one possible design, scrambling the n self-decoding units with the scrambling sequence to obtain a scrambled sequence includes: scrambling the n self-decoding units by adopting n scrambling sequences, wherein the n scrambling sequences belong to different scrambling sequence packets, and packet information of the scrambling sequence packets is used for indicating whether the SPBCH exists or the resource position for transmitting the SPBCH.
In one possible design, the scrambling the n self-decoding units with the scrambling sequence to obtain a scrambled sequence includes:
scrambling the information bits with different scrambling sequences, wherein the different scrambling sequences are used for indicating whether the SPBCH exists or the resource position of the transmission of the SPBCH.
In one possible design, scrambling the n self-decoding units with the scrambling sequence to obtain a scrambled sequence includes:
scrambling the n self-decoding units by a scrambling sequence with the length larger than the total length of the n self-decoding units, wherein the scrambling sequence with the length larger than the total length of the n self-decoding units can be divided into a plurality of parts, and the scrambling sequences of different parts are used for indicating whether the SPBCH exists or not or the resource position for transmitting the SPBCH.
In a possible design, the encoding the bit sequence to obtain the coding sequence specifically includes: and coding the coding sequence by adopting Polar coding.
On the other hand, embodiments of the present application propose a transmitting device having a function of respectively implementing a transmitting device behavior in the transmitting method of the secondary broadcast channel described above. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
In another aspect, an embodiment of the present application provides a method for receiving a secondary broadcast channel indication, including:
the receiving device receives a symbol sequence;
the receiving equipment demaps and demodulates the symbol sequence to obtain the soft information of the coding sequence;
and the receiving equipment descrambles the soft information of the coding sequence and then decodes the soft information, and checks the decoding result to obtain the control information.
On the other hand, the embodiment of the present application provides another receiving method for secondary broadcast channel indication, including:
the receiving device receives a symbol sequence;
the receiving equipment performs demapping demodulation on the symbol sequence to obtain a coding sequence;
the receiving equipment selects at least one self-decoding unit from the coding sequence;
the receiving equipment carries out descrambling operation on at least one self-decoding unit by using at least one descrambling sequence to obtain a descrambled sequence;
and the receiving equipment decodes and checks the descrambled sequence.
On the other hand, the embodiment of the present application proposes a transmitting device having a function of respectively implementing behaviors of receiving devices in the receiving method of the secondary broadcast channel. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
Yet another aspect of the present application provides a computer-readable storage medium having stored therein instructions, which when executed on a computer, cause the computer to perform the method of the above-described aspects.
Yet another aspect of the present application provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of the above-described aspects.
Drawings
Fig. 1 is a basic flow diagram of wireless communication.
Fig. 2 is a flowchart of a method for sending a secondary broadcast channel indicator according to an embodiment of the present application.
FIG. 3 is a diagram showing the construction of Arikan Polar code.
FIG. 4 is a diagram showing the construction of CA Polar code.
FIG. 5 is a diagram showing the construction of PC Polar code.
Fig. 6 shows a procedure of processing PBCH on the receiving side in LTE.
Fig. 7 is a flowchart of a method for receiving a secondary broadcast channel indicator according to an embodiment of the present application.
Fig. 8 is a flowchart of a method for sending a secondary broadcast channel indicator according to another embodiment of the present application.
Fig. 9 is a flowchart of a method for receiving a secondary broadcast channel indicator according to another embodiment of the present application.
Fig. 10 is a simplified block diagram of a transmitting device in one embodiment of the present application.
Fig. 11 is a simplified block diagram of a receiving device in one embodiment of the present application.
Detailed Description
Specific embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a basic flow of wireless communication, in which at a transmitting end, a signal source is sequentially subjected to signal source coding, channel coding, rate matching, and modulation mapping. And at a receiving end, sequentially demodulating and de-mapping, de-rate matching, channel decoding and information source decoding to output an information sink. Polar codes can be adopted for channel coding codes, and the code length of original Polar codes (mother codes) is an integral power of 2, so that the Polar codes with any code length need to be realized through rate matching in practical application. The sending end carries out rate matching after channel coding to realize any target code length, and carries out rate de-matching before channel decoding at the receiving end. It should be noted that the basic flow of wireless communication further includes additional flows (e.g., precoding and interleaving), which are not listed again in view of the common knowledge of those skilled in the art.
The embodiment of the application can be applied to wireless communication systems, including but not limited to: narrow Band Internet of Things (NB-IoT), Global System for Mobile Communications (GSM), Enhanced Data rate (Enhanced Data for GSM Evolution (EDGE)), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access 2000 (Code Division Multiple Access, TD-LLC), Long Term Evolution (Long Term Evolution (LTE)), and triple application scenarios (TC, BB and URTC) of the next-generation 5G Mobile communication System.
In the embodiment of the present application, the base station is a device deployed in a radio access network to provide a terminal with a wireless communication function. The base stations may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like. In systems using different radio access technologies, the name of a device having a base station function may be different, for example, in an LTE system, the device is called an evolved Node B (eNB or eNodeB), and in a third Generation (3 rd Generation, abbreviated as 3G) system, the device is called a Node B (english: Node B). For convenience of description, in all embodiments of the present application, the above-mentioned apparatuses providing a terminal with a wireless communication function are collectively referred to as a base station or BS.
The terminals referred to in the embodiments of the present application may include various handheld devices, vehicle mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication capability. The terminal may also be referred to as a User Equipment (UE), and may further include a subscriber unit (subscriber unit), a cellular phone (cellular phone), a smart phone (smart phone), a wireless data card, a Personal Digital Assistant (PDA) computer, a tablet computer, a wireless modem (modem), a handheld device (handset), a laptop computer (laptop computer), a Machine Type Communication (MTC) terminal, and the like. For convenience of description, in all embodiments of the present application, the above-mentioned devices are collectively referred to as an MS.
In the fifth generation (5)thGeneration, 5G) communication System, a Minimum System Information (MSI) is proposed. The PBCH is divided into a Physical Broadcast Channel and a Secondary Physical Broadcast Channel (SPBCH). As broadcast information becomes more and more heavily loaded, MSI is fragmented, with a portion of the MSI information (e.g., relatively important MSI information) being transmitted in the physical broadcast channel and another portion of the MSI information being transmitted on the secondary physical broadcast channel.
With the development of 5G technology, the types of cellular networks supported by the technology are different, and the SPBCH does not exist in all cellular networks. In some cellular networks only PBCH is present, in others both PBCH and SPBCH are present. Referring to fig. 2 and fig. 3 together, an embodiment of the present application provides a method for sending a secondary broadcast channel indicator, where the method may be applied to a sending device, and the method includes:
101: and the sending equipment codes the control information to obtain a coded sequence, wherein the control information comprises secondary broadcast channel SPBCH indication information.
The control information includes SPBCH indication information, where the SPBCH indication information may be one or more bits and may be used to indicate whether the SPBCH exists. Typically, the control information is transmitted through PBCH. For example, when the resource location of the SPBCH is fixed, the terminal needs to receive control information of the SPBCH transmission at the fixed resource location. Alternatively, the SPBCH indication information may also be used to indicate the resource location of the SPBCH. When the resource location of the SPBCH is not fixed, for example, the resource location may need to be selected from a plurality of resource locations candidate according to the SPBCH indicating information, or the resource location itself may be indicated by the SPBCH. The transmitting device can indicate an index of a certain resource location of the candidate or indicate the resource location itself through the SPBCH indication information. Illustratively, when the candidate resource locations are four, the transmitting device may indicate an index of the resource location required for transmitting the SPBCH information.
Illustratively, the SPBCH indication Information may be included in idle bits of a Master Information Block (MIB) structure in the LTE-like system, where 14 Information bits and 10 idle bits are included in the MIB. The SPBCH indication information may be indicated by a number of idle bits or a fraction of a number of idle bits.
In view of this, the present application also proposes an Information block (block), which may be referred to as Minimum System Information (MSI), sent on PBCH and including downlink System bandwidth, PHICH, first eight bits of subframe number and SPBCH configuration. Wherein, the SPBCH configuration is used for indicating whether the SPBCH exists or the position of the transmission of the SPBCH resources. Illustratively, when the configuration position of the SPBCH is all zero, it means that there is no SPBCH. Illustratively, the transmitting device may perform channel coding on the bit sequence by using Polar codes, which are briefly described below.
Specifically, the transmitting device performs Cyclic Redundancy Check (CRC) coding on the control information to be transmitted, and then performs channel coding and rate matching on a sequence subjected to CRC coding to obtain a coded sequence. Hereinafter, abbreviated as CA Polar code.
Or, the sending device performs Polar coding and rate matching on the control information to obtain a coding sequence. I.e. conventional Polar coding.
Or, after Parity Check PC (Parity Check, PC) coding is performed on the control information to be transmitted by the transmitting device, the transmitting device performs channel coding and rate matching on the sequence subjected to PC Check coding to obtain a coding sequence. Hereinafter, abbreviated as PC Polar code.
Polar codes proposed by Arikan professor Arikan are the first codes that theoretically prove to be able to reach shannon capacity and have low coding complexity. Polar code is also a linear block code with a coding matrix of GNThe coding process is
Figure BDA0001253840190000051
Wherein
Figure BDA0001253840190000052
Is a binary row vector with length N (i.e., code length); gNIs an N × N matrix, and
Figure BDA0001253840190000053
Figure BDA0001253840190000054
is defined as log2N matrices F2Kronecker (Kronecker) product of (a). The matrix is
Figure BDA0001253840190000055
In the encoding process of the Polar code,
Figure BDA0001253840190000056
a part of the bits used to carry information is called information bit set, and the set of indices of these bits is denoted as
Figure BDA0001253840190000057
The other part of the bits are set as a fixed value predetermined by the transmitting and receiving end, called a fixed bit set or a frozen bit set (frozen bits), and the set of the indexes is used
Figure BDA0001253840190000058
Complement of
Figure BDA0001253840190000059
And (4) showing. The encoding process of Polar code is equivalent to:
Figure BDA00012538401900000510
here, GN(A) Is GNMiddle group collection
Figure BDA00012538401900000529
Of (2) a sub-matrix, G, derived from those rows corresponding to the index of (a)N(AC) Is GNMiddle group collection
Figure BDA00012538401900000511
The index in (1) corresponds to those rows of the resulting sub-matrix.
Figure BDA00012538401900000512
Is composed of
Figure BDA00012538401900000513
The number of the information bit sets is K;
Figure BDA00012538401900000514
is composed of
Figure BDA00012538401900000515
Middle fixingThe set of certain bits, the number of which is (N-K), are known bits. These fixed bits are usually set to 0, but may be arbitrarily set as long as the transceiving end agrees in advance. Thus, the coded output of Polar code can be simplified as:
Figure BDA00012538401900000516
here, the
Figure BDA00012538401900000517
Is composed of
Figure BDA00012538401900000518
The set of information bits in (1) is,
Figure BDA00012538401900000519
is a row vector of length K, i.e.
Figure BDA00012538401900000520
I.e. represents the number of elements in the set, K is the information block size,
Figure BDA00012538401900000521
is a matrix GNMiddle group collection
Figure BDA00012538401900000522
The sub-matrix obtained for those rows corresponding to the index in (1),
Figure BDA00012538401900000523
is a K × N matrix.
Polar code construction process or set
Figure BDA00012538401900000524
The selection process of (2) determines the performance of Polar codes. The Polar code construction process generally includes determining that N polarized channels coexist according to the code length N of the mother code, respectively corresponding to N rows of the coding matrix, calculating the reliability of the polarized channels, and using the indexes of the first K polarized channels with higher reliability as a set
Figure BDA00012538401900000525
The indexes corresponding to the remaining (N-K) polarized channels as the index set of the fixed bits
Figure BDA00012538401900000526
Of (2) is used. Collection
Figure BDA00012538401900000527
Determining the position, set, of information bits
Figure BDA00012538401900000528
The position of the fixed bit is determined.
As can be seen from the coding matrix, the code length of the original Polar code (mother code) is an integer power of 2, and in practical application, the Polar code with any code length needs to be realized through rate matching.
For the Airkan conventional Polar coding description in fig. 3, { u1, u2, u3, u5} are set as a fixed set of bits, { u4, u6, u7, u8} are set as a set of information bits, and 4 information bits in an information vector of length 4 are coded into 8 coded bits.
For the CA Polar code description in FIG. 4, { u1, u2} is set to a fixed set of bits, { u3, u4, u5, u6} is set to a set of information bits, and { u7, u8} is a set of CRC bits. Wherein, the value of { u7, u8} is obtained by CRC of { u3, u4, u5, u6 }.
For CA Polar encoding, CA-SCL (English: CRC-aid successful Cancellation List, Chinese: CRC-assisted serial Cancellation List) decoding algorithm is adopted. And the CA-SCL decoding algorithm selects a path through which CRC passes from the candidate paths output by SCL decoding as decoding output through CRC check.
For the PC Polar code description in FIG. 5, { u1, u2, u5} is set to a fixed set of bits, { u3, u4, u6, u7} is set to a set of information bits, and { u7} is a set of PC fixed bits. Wherein, the value of { u7} is obtained by exclusive OR of { u3, u6 }.
102, scrambling the coding sequence by the sending equipment by using a scrambling sequence to obtain a scrambled sequence;
specifically, in step 102, the sending device repeats the coding sequence to obtain a plurality of PBCH independent self-decoding units with equal size, and scrambles the coding sequence with the scrambling sequence to obtain a scrambled sequence. Wherein each independent self-decoding unit carries the same coded bits and is distinguished by scrambling sequences of different phases.
103, the sending device sends the scrambled sequence after modulation and mapping operation.
It should be noted that steps 101 and 102 may be exchanged, that is, the bit sequence may be encoded first and then scrambled, or the bit sequence may be scrambled first and then encoded.
Referring to fig. 6, in case of good channel quality, the receiving end receives only one PBCH independent self-decoding unit to successfully complete the operations of descrambling, decoding and CRC check. Because the receiving end can obtain that the transmitting end transmits the MIB in the radio frame within a period through the scrambling code sequence which is descrambled successfully, the low 2 bits of the SFN are known. For the case of poor channel quality, if the receiving end receives only one PBCH independent self-decoding unit and cannot successfully descramble and decode, the receiving end performs soft combining with the PBCH independent unit sent by the next 10ms and decodes the PBCH independent unit until successful decoding is performed.
Referring to fig. 7, another embodiment of the present application provides a method for receiving a secondary broadcast channel indication, where the method may be applied to a receiving device, and the receiving device may be a terminal. The receiving method of the channel indication comprises the following steps:
201: receiving a symbol sequence by receiving equipment, wherein the symbol sequence is obtained by coding, scrambling, modulating and mapping control information by the sending equipment;
202: the receiving equipment demaps and demodulates the symbol sequence to obtain the soft information of the coding sequence;
and 203, the receiving equipment descrambles the soft information of the coding sequence and then decodes the soft information, and the decoding result is verified to obtain control information, wherein the control information comprises SPBCH indication information. And the receiving equipment reads the control information on the SPBCH according to the indication of the SPBCH indication information.
Specifically, when the check is successful, the control information is obtained, and the receiving device reads the control information on the SPBCH. When the check is unsuccessful, the symbol sequence continues to be received.
Referring to fig. 8, another embodiment of the present application provides another secondary broadcast channel indication sending method, which can be applied to a sending device, where the sending device can be a base station. The sending method comprises the following steps:
301, the sending device encodes the control information to obtain a coding sequence;
specifically, the transmitting device first performs Cyclic Redundancy Check (CRC) coding on the control information to be transmitted, and then performs channel coding and rate matching on the bit sequence subjected to the CRC coding to obtain a coded sequence. Or, the sending device may also perform parity check on the control information to be sent, and then perform channel coding and rate matching on the bit sequence after parity check to obtain the coding sequence. In the embodiment of the present invention, the channel coding may be performed by using Polar code.
302, the transmitting device repeats the code sequence to obtain n self-decoding units, where n is an integer and n > 0.
Exemplarily, referring to the way of using CRC check and obtaining self-decoding unit in the LTE system, the MIB information is 14 bits, plus 10 bits of reservation information and 16 bits of CRC check information for a total of 40 bits, and the code rate is 1/3 to generate 120 coded bits as one self-decoding unit through TBCC coding. Each transmission repeats 4 copies of the 120 coded bits for a total of 480 coded bits, which are 4 self-decoding units. PBCH is done with four retransmissions, i.e. a total of 1920 coded bits are transmitted.
303, scrambling the n self-decoding units by using a scrambling sequence by the sending equipment to obtain a scrambled sequence;
in one embodiment, the SPBCH may be indicated by employing different scrambling sequences, which may be generated, for example, by different scrambling initial values.
With scrambling sequences S generated with different scrambling initial values1And S2For example, the following steps are performed. Wherein the content of the first and second substances,using scrambling sequences S1When scrambling is carried out, the existence of SPBCH is indicated; using scrambling sequences S2When scrambled, it indicates that SPBCH does not exist. Alternatively, the number of candidate scrambling sequences may be greater than 2. When the number of candidate scrambling sequences is 4, the transmitting device selects 2 from them to indicate.
In another embodiment, when the number of candidate scrambling sequences is large, the candidate scrambling sequences may be further grouped, and the SPBCH is indicated by scrambling with a scrambling sequence in a different scrambling sequence group. For example, when the transmitting device scrambles with a certain scrambling sequence in packet 1, it indicates that SPBCH exists; when the transmitting device scrambles with a certain scrambling sequence in packet 2, it indicates that SPBCH does not exist.
Optionally, the different scrambling sequences or different scrambling sequence packets described above can also be used to indicate the SPBCH resource locations. Specifically, when there are several candidate resource positions in the SPBCH, a different scrambling sequence or a scrambling sequence in a scrambling sequence packet may be used to indicate one of the several candidate resource positions. E.g. with a scrambling sequence S3And S4For example, when the transmitting device employs a scrambling sequence S3Scrambling to indicate one of several candidate resource locations (at the same time, the presence of SPBCH is also indicated); when the transmitting device scrambles the sequence S4Scrambling is performed to indicate another of the candidate resource locations. Similarly, the transmitting device can also indicate the SPBCH resource locations in different scrambling sequence packets.
For example, when the number of the candidate resource positions is four, the scrambling code sequence may be divided into four, and each scrambling code sequence corresponds to one resource position. When the transmission of the SPBCH control information needs to be carried out at a certain resource position, scrambling is carried out in a scrambling code sequence corresponding to the resource position. Alternatively, the scrambling code sequences may be four groups, each group of scrambling code sequences includes a plurality of scrambling code sequences, and each group of scrambling code sequences corresponds to one resource location. When the transmission of the SPBCH control information needs to be carried out at a certain resource position, one of a group of scrambling code sequences corresponding to the resource position is adopted for scrambling.
The sending device may also generate a scrambling sequence with a length greater than the total length of n self-decoding units by using the same initial value of the scrambling sequence, for example, twice the total length of the coding sequence, and then the transmitting end performs scrambling operations by using different parts of the scrambling sequence, where the different parts of the scrambling sequence implicitly indicate the SPBCH information or the SPBCH resource transmission position.
And 304, transmitting the scrambled sequence after adopting modulation and mapping operation.
Referring to fig. 9, another embodiment of the present application provides a method for receiving a secondary broadcast channel indication, where the method is applied to a receiving device. As can be seen from the sender description, each PBCH independently carries the same coded bits from the decoding unit. The receiving method comprises the following steps:
401, a receiving device receives a symbol sequence, wherein the symbol sequence is obtained by a sending device after the sending device encodes and scrambles, modulates and maps control information;
402: the receiving equipment performs demapping demodulation on the symbol sequence to obtain a coding sequence;
403: the receiving equipment selects at least one self-decoding unit from the coding sequence;
404: and the receiving equipment performs descrambling operation on the at least one self-decoding unit by using at least one descrambling sequence to obtain a descrambled sequence. 405: and the receiving equipment decodes and checks the descrambled sequence and controls information.
Specifically, if the check is correct, the SPBCH indicating information can be obtained according to the descrambling sequence, and the receiving device reads the corresponding control information from the SPBCH according to the indication of the SPBCH indicating information.
As shown in fig. 10, a transmitting device 500 is further provided in another embodiment of the present application. The transmitting device may be a base station or a DSP or ASIC or chip implementing the relevant coding functions. The transmitting device 200 comprises a memory 501, a processor 502 and a transceiver 503, the memory 501, the processor 502 and the transceiver 503 being previously connected by a bus 504.
A memory 501 for storing programs; the Memory may be a Random Access Memory (RAM), a Read Only Memory (ROM), or a flash Memory, and the Memory may be located in the sending device 500 alone or in the processor 502.
In one embodiment, the processor 502 is configured to execute a program stored in the memory 501, and when the program is executed, the processor 502 encodes control information to obtain an encoded sequence, where the control information includes SPBCH indicating information; scrambling the coding sequence by adopting a scrambling sequence to obtain a scrambled sequence; and modulating and mapping the scrambled sequence.
In another embodiment, the processor 502 is configured to execute a program stored in the memory 501, and when the program is executed, the processor 502 encodes the control information to obtain an encoded sequence; repeating the coding sequence to obtain n self-decoding units, wherein n is an integer and n is greater than 0; scrambling the n self-decoding units by adopting scrambling sequences to obtain scrambled sequences; (ii) a And modulating and mapping the scrambled sequence.
And a transceiver 503, configured to transmit the modulated and mapped scrambled sequence.
The embodiment of the application provides an SPBCH indication mechanism by using one or more bits in system information to indicate whether the SPBCH exists or the resource mapping position, thereby saving signaling overhead.
As shown in fig. 11, a receiving device 600 is further provided in another embodiment of the present application. The transmitting device may be a terminal, or a DSP or ASIC or chip implementing the relevant coding functions. The transmitting device 600 comprises a memory 601, a processor 602 and a transceiver 603, the memory 601, the processor 602 and the transceiver 603 being previously connected by a bus 604.
A memory 601 for storing programs; the Memory may be a Random Access Memory (RAM), a Read Only Memory (ROM), or a flash Memory, and the Memory may be located in the transmitting device 600 alone or in the processor 602.
In one embodiment, the transceiver 603 is configured to receive a sequence of symbols.
A processor 602, configured to execute the program stored in the memory 601, where when the program is executed, the processor 602 is configured to perform demapping and demodulation on the symbol sequence to obtain soft information of the coding sequence; and descrambling the soft information of the coding sequence, decoding, and verifying the decoding result to obtain the control information.
In another embodiment, the processor 602 is configured to execute a program stored in the memory 601, and when the program is executed, the processor 502 performs demapping demodulation on the symbol sequence to obtain a coded sequence; selecting at least one self-decoding unit from the encoded sequence; and performing descrambling operation on at least one self-decoding unit by using at least one descrambling sequence to obtain a descrambled sequence.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server or data center to another website, computer, server or data center by wire (e.g., coaxial cable, optical fiber, Digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD (Digital Video Disk), or a semiconductor medium (e.g., SSD), etc.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The computer program product includes the computer program instructions, which when run on a computer, cause the computer to execute the method for transmitting the downlink synchronization signal or the method for receiving the downlink synchronization signal.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A method for sending secondary broadcast channel indication, the method is applied to a sending device, and is characterized by comprising
Coding the control information to obtain a coding sequence;
repeating the coding sequence to obtain n self-decoding units, wherein n is an integer and n is greater than 0;
scrambling the n self-decoding units by adopting scrambling sequences to obtain scrambled sequences;
the scrambled sequence is sent after modulation and mapping operation;
wherein, scrambling the n self-decoding units by using the scrambling sequence to obtain a scrambled sequence comprises:
scrambling the n self-decoding units by adopting n scrambling sequences, wherein the n scrambling sequences belong to different scrambling sequence packets, and packet information of the scrambling sequence packets is used for indicating whether the SPBCH exists or the resource position for transmitting the SPBCH.
2. The method according to claim 1, wherein the encoding the control information to obtain the encoded sequence specifically comprises:
and coding the control information by adopting Polar coding to obtain a coding sequence.
3. A method for sending secondary broadcast channel indication, the method is applied to a sending device, and is characterized by comprising
Coding the control information to obtain a coding sequence;
repeating the coding sequence to obtain n self-decoding units, wherein n is an integer and n is greater than 0;
scrambling the n self-decoding units by adopting scrambling sequences to obtain scrambled sequences;
the scrambled sequence is sent after modulation and mapping operation;
wherein, scrambling the n self-decoding units by using the scrambling sequence to obtain a scrambled sequence comprises:
scrambling the n self-decoding units with different scrambling sequences, wherein the different scrambling sequences are used for indicating whether the SPBCH exists or the resource position for transmitting the SPBCH.
4. The method according to claim 3, wherein the encoding the control information to obtain the encoded sequence specifically comprises:
and coding the control information by adopting Polar coding to obtain a coding sequence.
5. A method for sending secondary broadcast channel indication, the method is applied to a sending device, and is characterized by comprising
Coding the control information to obtain a coding sequence;
repeating the coding sequence to obtain n self-decoding units, wherein n is an integer and n is greater than 0;
scrambling the n self-decoding units by adopting scrambling sequences to obtain scrambled sequences;
the scrambled sequence is sent after modulation and mapping operation;
wherein, scrambling the n self-decoding units by using the scrambling sequence to obtain a scrambled sequence comprises:
scrambling the n self-decoding units by a scrambling sequence with the length larger than the total length of the n self-decoding units, wherein the scrambling sequence with the length larger than the total length of the n self-decoding units can be divided into a plurality of parts, and the scrambling sequences of different parts are used for indicating whether the SPBCH exists or not or the resource position for transmitting the SPBCH.
6. The method according to claim 5, wherein the encoding the control information to obtain the encoded sequence specifically comprises:
and coding the control information by adopting Polar coding to obtain a coding sequence.
7. A transmitting device, characterized in that the transmitting device comprises:
the processor is used for coding the control information to obtain a coding sequence; repeating the coding sequence to obtain n self-decoding units, wherein n is an integer and n is greater than 0; scrambling the n self-decoding units by adopting scrambling sequences to obtain scrambled sequences; modulating and mapping the scrambled sequence;
a transceiver for transmitting the scrambled sequence after the modulation and mapping operations;
the processor is configured to scramble n self-decoding units with n scrambling sequences to obtain scrambled sequences, where the n scrambling sequences belong to different scrambling sequence packets, and packet information of the scrambling sequence packets is used to indicate whether an SPBCH exists or a resource location for transmitting the SPBCH.
8. A transmitting device, characterized in that the transmitting device comprises:
the processor is used for coding the control information to obtain a coding sequence; repeating the coding sequence to obtain n self-decoding units, wherein n is an integer and n is greater than 0; scrambling the n self-decoding units by adopting scrambling sequences to obtain scrambled sequences; modulating and mapping the scrambled sequence;
a transceiver for transmitting the scrambled sequence after the modulation and mapping operations;
wherein the processor is configured to scramble the n self-decoding units with different scrambling sequences, the different scrambling sequences being used to indicate whether there is an SPBCH or a resource location where the SPBCH is transmitted.
9. A transmitting device, characterized in that the transmitting device comprises:
the processor is used for coding the control information to obtain a coding sequence; repeating the coding sequence to obtain n self-decoding units, wherein n is an integer and n is greater than 0; scrambling the n self-decoding units by adopting scrambling sequences to obtain scrambled sequences; modulating and mapping the scrambled sequence;
a transceiver for transmitting the scrambled sequence after the modulation and mapping operations;
wherein, the scrambling the n self-decoding units by the scrambling sequence to obtain the scrambled sequence comprises:
scrambling the n self-decoding units by a scrambling sequence with the length larger than the total length of the n self-decoding units, wherein the scrambling sequence with the length larger than the total length of the n self-decoding units can be divided into a plurality of parts, and the scrambling sequences of different parts are used for indicating whether the SPBCH exists or not or the resource position for transmitting the SPBCH.
10. A computer-readable storage medium, characterized in that it stores a computer program, wherein the computer program is capable of implementing the method of any one of claims 1 to 6 when executed by a computer.
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110535800B (en) * 2019-02-01 2023-04-25 中兴通讯股份有限公司 Data processing method and device and computer readable storage medium
CN111865491B (en) * 2020-06-15 2021-09-21 北京邮电大学 Polarization coding hybrid automatic repeat request self-decoding method, device and system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101690063A (en) * 2007-06-19 2010-03-31 株式会社Ntt都科摩 Base station device and notice channel transmitting method
CN101924606A (en) * 2010-08-16 2010-12-22 中兴通讯股份有限公司 Method for sending uplink control information on basis of PUSCH transmission and system thereof
CN104937873A (en) * 2012-08-10 2015-09-23 华为技术有限公司 Methods and nodes in a wireless communication system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9001756B2 (en) * 2011-04-27 2015-04-07 Texas Instruments Incorporated Physical downlink control channel and physical hybrid automatic repeat request indicator channel enhancements
WO2013125873A1 (en) * 2012-02-21 2013-08-29 엘지전자 주식회사 Initial access method and device in wireless communication system
US10448379B2 (en) * 2012-05-04 2019-10-15 Texas Instruments Incorporated Enhanced downlink control channel configuration for LTE
CN107113090B (en) * 2015-01-26 2019-11-19 华为技术有限公司 The generation method and equipment of polarization Polar code

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101690063A (en) * 2007-06-19 2010-03-31 株式会社Ntt都科摩 Base station device and notice channel transmitting method
CN101924606A (en) * 2010-08-16 2010-12-22 中兴通讯股份有限公司 Method for sending uplink control information on basis of PUSCH transmission and system thereof
CN104937873A (en) * 2012-08-10 2015-09-23 华为技术有限公司 Methods and nodes in a wireless communication system

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Minimum system information delivery;Ericsson;《3GPP TSG-RAN WG1 NR adhoc，R1-1700296》;20170116;全文 *
NR PBCH Design;LG Electronics;《3GPP TSG RAN WG1 NR Ad-Hoc Meeting，R1-1700460》;20170120;全文 *
NR-PBCH Design;Ericsson;《3GPP TSG-RAN WG1 Meeting #88，R1-1702124》;20170217;第3.3节 *

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